Decreased Risk (decreased + risk)

Distribution by Scientific Domains
Distribution within Medical Sciences


Selected Abstracts


High Adherence to Antihypertensive Therapy is Rare But When Present Is Associated With a Decreased Risk of Cardiovascular Events

JOURNAL OF CLINICAL HYPERTENSION, Issue 3 2010
Michael J. Bloch MD
No abstract is available for this article. [source]


Prostate cancer and PSA among statin users in the Finnish prostate cancer screening trial

INTERNATIONAL JOURNAL OF CANCER, Issue 7 2010
Teemu J. Murtola
Abstract Decreased risk of advanced prostate cancer has been reported among men using statins. However, the evidence on overall prostate cancer risk is conflicting. We compared the relative risk between current users and non-users of statins or other cholesterol-lowering medications in a population undergoing systematical prostate cancer screening. The study cohort comprised of 23,320 men participating in the screening arm of the Finnish prostate cancer screening trial during 1996,2004. Information on medication use was obtained from a comprehensive national prescription database. Cox proportional hazards regression was used to calculate multivariable adjusted hazard ratios (HRs) for prostate cancer. Serum prostate-specific antigen (PSA) level was compared between current users and non-users of cholesterol-lowering drugs. Compared with medication non-users, the overall prostate cancer incidence was decreased among statin users [HR 0.75, 95% confidence interval (CI) 0.63,0.89]. The inverse association was dose-dependent with cumulative amount of statin use, and strongest for low-grade and early stage tumors. The incidence was nonsignificantly lower also among users of other types of cholesterol-lowering drugs (HR 0.62, 95% CI 0.28,1.38), but without dose-dependence. Age-adjusted median serum PSA tended to be lower among users of cholesterol-lowering drugs, but the relative risk decrease among statin users was not related to decreased PSA. Overall incidence of prostate cancer was lowered among statin users when bias due to differential PSA testing between medication users and non-users was eliminated by systematical prostate cancer screening. Cholesterol-lowering with statins seems beneficial for prostate cancer prevention. [source]


Chronic medical problems and distressful thoughts of suicide in primary care patients: mitigating role of happiness

INTERNATIONAL JOURNAL OF GERIATRIC PSYCHIATRY, Issue 7 2009
Jameson K. Hirsch
Abstract Objective Chronic medical problems might amplify suicide risk in later life. Feelings of happiness may reduce this risk. We tested the hypothesis that happiness attenuates the association between number of self-reported chronic diseases and suicidal distress. Methods A sample of 1,801 depressed, primary care patients, 60 years of age or older, entering a clinical trial, were assessed for the presence of positive emotion, suicidal distress and self-reported chronic medical problems. Results Chronic medical problems are associated with suicide ideation and, as hypothesized, happiness attenuates the relationship between self-reported diseases and suicidal distress. Conclusions Decreased risk for distressing thoughts of suicide in the context of medical illness is predicted by the presence of positive emotions. Our results suggest that treatments designed to help older primary care patients identify sources of joy and enhance happiness might decrease suicide risk. Copyright © 2009 John Wiley & Sons, Ltd. [source]


Pregnancy-induced hypertension and infant mortality: roles of birthweight centiles and gestational age

BJOG : AN INTERNATIONAL JOURNAL OF OBSTETRICS & GYNAECOLOGY, Issue 1 2007
XK Chen
Objective, To assess the effect of pregnancy-induced hypertension (PIH) on infant mortality in different birthweight centiles (small for gestational age [SGA], appropriate for gestational age [AGA], and large for gestational age [LGA]) and gestational ages (early preterm, late preterm, and full term). Design, Retrospective cohort study. Setting, Linked birth and infant death data set of USA between 1995 and 2000. Population, A total of 17 464 560 eligible liveborn singleton births delivered after 20th gestational week. Methods, Multivariate logistic regression models were applied to evaluate the association between PIH and infant mortality, with adjustment of potential confounders stratified by birthweight centiles and gestational age. Main outcome measure, Infant death (0,364 days) and its three components: early neonatal death (0,6 days), late neonatal death (7,27 days), and postneonatal death (28,364 days). Results, PIH was associated with decreased risks of infant mortality, early neonatal mortality, and late neonatal mortality in both preterm and term SGA births, and PIH was associated with lower postneonatal mortality in preterm SGA births. PIH was associated with decreased risks of infant mortality, early neonatal mortality, late neonatal mortality and postneonatal mortality in preterm AGA births. Decreased risk of infant mortality and early neonatal mortality was associated with PIH in early preterm LGA births. Conclusions, The association between PIH and infant mortality varies depending on different birthweight centiles, gestational age, and age at death. PIH is associated with a decreased risk of infant mortality in SGA births, preterm AGA births, and early preterm LGA births. [source]


Parents' safety beliefs and childhood agricultural injury

AMERICAN JOURNAL OF INDUSTRIAL MEDICINE, Issue 9 2009
Muree Larson-Bright PhD
Abstract Background This study examined potential associations between parental safety beliefs and children's chore assignments or risk of agricultural injury. Methods Analyses were based on nested case,control data collected by the 1999 and 2001 Regional Rural Injury Study-II (RRIS-II) surveillance efforts. Cases (n,=,425, reporting injuries) and controls (n,=,1,886, no injuries; selected using incidence density sampling) were persons younger than 20 years of age from Midwestern agricultural households. A causal model served as the basis for multivariate data analysis. Results Decreased risks of injury (odds ratio [OR] and 95% confidence intervals [CI]) were observed for working-aged children with "moderate," compared to "very strict" parental monitoring (0.60; 0.40,0.90), and with parents believing in the importance of physical (0.80; 0.60,0.95) and cognitive readiness (0.70, 0.50,0.90, all children; 0.30, 0.20,0.50, females) when assigning new tasks. Parents' safety beliefs were not associated with chore assignments. Conclusions Parents' safety beliefs were associated with reduced risk of childhood agricultural injury; the association was not mediated by chore assignments. Am. J. Ind. Med. Am. J. Ind. Med. 52:724,733, 2009. © 2009 Wiley-Liss, Inc. [source]


The Treatment of Melasma with Fractional Photothermolysis: A Pilot Study

DERMATOLOGIC SURGERY, Issue 12 2005
Cameron K. Rokhsar MD
Background. Melasma is a common pigmentary disorder that remains resistant to available therapies. Facial resurfacing with the pulsed CO2 laser has been reported successful but requires significant downtime, and there is a risk of adverse sequelae. Objective. To determine if melasma will respond to a new treatment paradigm, fractional resurfacing. Methods. Ten female patients (Fitzpatrick skin types III,V) who were unresponsive to previous treatment were treated at 1- to 2-week intervals with the Fraxel laser (Reliant Technologies, Palo Alto, CA, USA). Wavelengths of 1,535 and 1,550 nm were both used, and 6 to 12 mJ per microthermal zone with 2,000 to 3,500 mtz/cm2 were the treatment parameters. Four to six treatment sessions were performed. Responses were evaluated according to the percentage of lightening of original pigmentation. Two physicians evaluated the photographs, and each patient evaluated her own response. Results. The physician evaluation was that 60% of patients achieved 75 to 100% clearing and 30% had less than 25% improvement. The patients' evaluations agreed, except for one patient, who graded herself as 50 to 75% improved as opposed to the physician grading of over 75%. There was one patient with postinflammatory hyperpigmentation and no patient with hypopigmentation. No downtime was necessary for wound healing. Conclusions. Fractional resurfacing affords a new treatment algorithm for the treatment of melasma that combines decreased risk and downtime with significant efficacy. This treatment modality deserves further exploration to maximize benefits. RELIANT technologies LOANED THE FRAXEL LASER FOR THE STUDY. RICHARD E. FITZPATRICK, MD, IS A PAID CONSULTANT FOR RELIANT AND A STOCKHOLDER. [source]


Genetic variation and decreased risk for obesity in the Atherosclerosis Risk in Communities Study

DIABETES OBESITY & METABOLISM, Issue 4 2007
M. L. Hart Sailors
Aim:, To investigate the effects of variation in the leptin [LEP (19A>G)] and melanocortin-4 receptor [MC4R (V103I)] genes on obesity-related traits in 13,405 African-American (AA) and white participants from the Atherosclerosis Risk in Communities (ARIC) Study. Methods:, We tested the association between the single-locus and multilocus genotypes and obesity-related measures [body mass index (BMI), body weight (BW), waist,hip ratio, waist circumference and leptin levels], adjusted for age, physical activity level, smoking status, diabetic status, prevalence of coronary heart disease, hypertension, stroke or transient ischaemic attack. Results:, AA and white female carriers of the MC4R I103 allele exhibited significantly lower BW than non-carriers of this allele (p < 0.05 and p < 0.01 respectively). AA female carriers of both the LEP A19 allele and the MC4R I103 allele were 63% [odds ratio (OR) = 0.37, 95% confidence interval (CI) (0.18,0.78)] less likely to be obese, and white female carriers of the same two alleles were 46% [OR = 0.54, 95% CI (0.32,0.91)] less likely to be obese, than non-carriers of the variant alleles. Female carriers of both the LEP A19 and MC4R I103 alleles had significantly lower BW (p < 0.05), BMI (p < 0.05) and plasma leptin (p < 0.01) than the non-carriers of both the alleles. Carriers of the two variant alleles had lower BMI over the 9-year course of the ARIC study and significantly lower weight gain from age 25 years. No significant joint effect of these two variants was observed in males. Conclusion:, These results suggest that variation within the LEP and MC4R genes is associated with reduced risk for obesity in females. [source]


Retinal capillary basement membrane thickness in diabetic mice genetically modified at the haptoglobin locus

DIABETES/METABOLISM: RESEARCH AND REVIEWS, Issue 2 2007
Rachel Miller-Lotan Technion Faculty of Medicine
Abstract Background Individuals with diabetes mellitus (DM) homozygous for the haptoglobin (Hp) 1 allele are at decreased risk of retinopathy as compared to DM individuals with the Hp 2 allele. We sought to recapitulate these findings in DM mice genetically modified at the Hp locus. Methods An early morphological characteristic of the microangiopathy seen in diabetic retinal disease is retinal capillary basement membrane (RCBM) thickening. RCBM thickness as assessed by electron microscopy was performed on a total of 12 eyes taken from three mice in each of the four study groups (three eyes from C57Bl/6 Hp 1 and C57Bl/6 Hp 2 mice with and without streptozotocin-induced diabetes). Results The non-parametric Kruskal,Wallis ANOVA test demonstrated that there was a highly significant difference between the four groups of mice (P < 0.0001). Mann,Whitney tests for specific pair-wise comparisons demonstrated that there was no significant difference in the RCBM thickness between Hp 1 and Hp 2 mice (p = 0.70) or between DM Hp 1 and non-DM Hp 1 mice (p = 0.42). However, induction of diabetes resulted in a marked increase in RCBM thickness in Hp 2 mice compared to non-DM Hp 2 mice (p = 0.0004) and compared to DM Hp 1 mice (p = 0.0005). Conclusions A highly significant increase in RCBM thickness was observed in DM mice with the Hp 2 genotype. These data provide important support for association studies done in humans showing an increased prevalence of diabetic retinopathy in individuals with the Hp 2 genotype. Copyright © 2006 John Wiley & Sons, Ltd. [source]


Does aggregation benefit bark beetles by diluting predation?

ECOLOGICAL ENTOMOLOGY, Issue 2 2004
Links between a group-colonisation strategy, the absence of emergent multiple predator effects
Abstract., 1. Aggregation in bark beetles (Coleoptera: Scolytidae) aids in mate attraction and resource procurement when colonising well-defended plants; however, some species colonise primarily poorly defended plants, and intraspecific competition increases mortality. The hypothesis that decreased risk of predation was a potential benefit to aggregation in such circumstances was tested, using the pine engraver, Ips pini (Say) and its two major predators Thanasimus dubius (F.) (Coleoptera: Cleridae) and Platysoma cylindrica (Paykull) (Coleoptera: Histeridae). Both single- and multiple-predator effects, across a range of prey densities, were tested. 2. Both male and female colonisation events increased with herbivore density, in an asymptotic fashion. 3. Predators decreased the number of colonisers in a density-dependent manner, consistent with a type II functional response. 4. The proportional impact of predators decreased with increased herbivore colonisation densities. These findings indicate that predator dilution may be a viable benefit to aggregation. 5. Total emergence of the herbivore also increased with density, although the net replacement rate during one generation was independent of initial arrival density. This was likely due to larval predation, which negates potential relationships between per capita reproductive success and establishment density. 6. Each predator species decreased I. pini's net replacement rate by approximately 42%, and their combined effect was approximately 70%. 7. Overall, these predators modified their prey's establishment and adult mortality relationships in additive manners. This is somewhat surprising, given the potential for emergent effects due to interactions between multiple predators foraging within a common habitat. The persistence of additivity, rather than risk reduction or enhancement to the prey, may increase the predator-swamping benefit to aggregation for this herbivore. 8. The effects of these predators are substitutable, and likely exert equivalent selective pressures to mask signals at the whole-plant level. [source]


Polymorphisms located in the region containing BHMT and BHMT2 genes as maternal protective factors for orofacial clefts

EUROPEAN JOURNAL OF ORAL SCIENCES, Issue 4 2010
Adrianna Mostowska
Mostowska A, Hozyasz KK, Biedziak B, Misiak J, Jagodzinski PP. Polymorphisms located in the region containingBHMTandBHMT2genes as maternal protective factors for orofacial clefts. Eur J Oral Sci 2010; 118: 325,332. © 2010 The Authors. Journal compilation © 2010 Eur J Oral Sci Nonsyndromic cleft lip with or without cleft palate (NCL/P) is one of the most common craniofacial malformations; however, its aetiology is still unclear. Because the effects of maternal nutrition on fetal development are well known, we decided to pursue the question of whether polymorphic variants of genes encoding enzymes involved in choline metabolism might be associated with the maternal risk of having a baby with NCL/P. Analysis of 18 single nucleotide polymorphisms (SNPs) of betaine-homocysteine methyltransferase (BHMT), betaine-homocysteine methyltransferase-2 (BHMT2), choline dehydrogenase (CHDH), choline kinase (CHKA), dimethylglycine dehydrogenase (DMGDH), choline-phosphate cytidylyltransferase A (PCYT1A), and phosphatidylethanolamine N -methyltransferase (PEMT) provided evidence that polymorphisms located in the region containing BHMT and BHMT2 were protective factors against NCL/P affected pregnancies in our population. The strongest signal was found for the SNP located in the intronic sequence of BHMT2. Women carrying two copies of the rs625879 T allele had a significantly decreased risk of having offspring with orofacial clefts. These results were significant, even after correction for multiple comparisons. Moreover, the gene,gene interaction analysis revealed a significant epistatic interaction of BHMT2 (rs673752), PEMT (rs12325817), and PCYT1A (rs712012) with maternal NCL/P susceptibility. Altogether, our study identified a novel gene, the nucleotide variants of which were be associated with a decreased risk of having a baby with NCL/P. [source]


PAX9 polymorphisms and susceptibility to sporadic tooth agenesis: a case,control study in southeast China

EUROPEAN JOURNAL OF ORAL SCIENCES, Issue 2 2008
Yongchu Pan
Tooth agenesis is one of the most common developmental disorders in humans. The PAX9 gene, which plays an important role in odontogenesis, is associated with familial and sporadic tooth agenesis. A case,control study was performed in 102 subjects with tooth agenesis (cases) and 116 healthy controls. We genotyped four PAX9 gene polymorphisms using a polymerase chain reaction,restriction fragment length polymorphism (PCR-RFLP) assay. The allele and genotype frequencies of the four polymorphisms were not significantly different between the controls and the subjects with tooth agenesis. Similar results were observed in a subgroup analysis of test subjects only with mandibular incisor agenesis. Further analysis showed no significant difference in the haplotype distribution between the controls and the subjects with tooth agenesis or mandibular incisor agenesis. However, we found that the AGGC haplotype was associated with a decreased risk of tooth agenesis, compared with the most common haplotype, AGCC (odds ratio, 0.14; 95% confidence interval: 0.00,0.95). These results suggest that the four PAX9 polymorphisms alone have a non-significant main effect on the risk of tooth agenesis but that the AGGC haplotype may have a protective effect associated with a decreased risk of tooth agenesis. [source]


Helicobacter pylori Infection and Gastroesophageal Reflux in a Population-Based Study (The HUNT Study)

HELICOBACTER, Issue 1 2007
Helena Nordenstedt
Abstract Background and Aim:, It has been suggested that Helicobacter pylori infection may prevent gastroesophageal reflux, possibly through gastric atrophy. Since, however, previous results are contradictory and no population-based studies are available, the relationship between H. pylori and reflux remains uncertain. The aim of this study was to investigate this relationship in a population-based, nested, case-control study. Methods:, From a cohort of 65,363 individuals, representing 71.2% of the adult population in the Norwegian county of Nord-Trondelag, we randomly selected 472 persons with recurrent reflux symptoms (cases) and 472 without such symptoms (controls). Occurrence of H. pylori and its virulence factor cagA was determined serologically, using an immunoblot assay. Gastric atrophy was assessed through serum levels of pepsinogen I. Odds ratios (OR) with 95% confidence intervals (CI), adjusted for potential confounding factors, represented relative risks. Results:,H. pylori infection was not associated with a decreased risk of reflux symptoms (OR 1.1, 95% CI 0.8,1.6), irrespective of positive cagA status (OR 1.1, 95% CI 0.8,1.5). Gastric atrophy reduced the risk of reflux symptoms (OR 0.2, 95% CI 0.0,0.6). Infection with H. pylori entailed a ninefold increase in the risk of gastric atrophy compared to non-infection (OR 8.9, 95% CI 2.0,39.9). Conclusions:,H. pylori infection, irrespective of cagA status, did not affect the occurrence of reflux symptoms in this population-based setting. Infected individuals are at increased risk of gastric atrophy, which in turn reduces reflux symptoms, but due to the low frequency of gastric atrophy among infected individuals overall, there was no association with reflux symptoms on a population level. [source]


Clinical risk factors for portopulmonary hypertension,

HEPATOLOGY, Issue 1 2008
Steven M. Kawut
Portopulmonary hypertension affects up to 6% of patients with advanced liver disease, but the predictors and biologic mechanism for the development of this complication are unknown. We sought to determine the clinical risk factors for portopulmonary hypertension in patients with advanced liver disease. We performed a multicenter case-control study nested within a prospective cohort of patients with portal hypertension recruited from tertiary care centers. Cases had a mean pulmonary artery pressure > 25 mm Hg, pulmonary vascular resistance > 240 dynes · second · cm,5, and pulmonary capillary wedge pressure , 15 mm Hg. Controls had a right ventricular systolic pressure < 40 mm Hg (if estimable) and normal right-sided cardiac morphology by transthoracic echocardiography. The study sample included 34 cases and 141 controls. Female sex was associated with a higher risk of portopulmonary hypertension than male sex (adjusted odds ratio = 2.90, 95% confidence interval 1.20-7.01, P = 0.018). Autoimmune hepatitis was associated with an increased risk (adjusted odds ratio = 4.02, 95% confidence interval 1.14-14.23, P = 0.031), and hepatitis C infection was associated with a decreased risk (adjusted odds ratio = 0.24, 95% confidence interval 0.09-0.65, P = 0.005) of portopulmonary hypertension. The severity of liver disease was not related to the risk of portopulmonary hypertension. Conclusion: Female sex and autoimmune hepatitis were associated with an increased risk of portopulmonary hypertension, whereas hepatitis C infection was associated with a decreased risk in patients with advanced liver disease. Hormonal and immunologic factors may therefore be integral to the development of portopulmonary hypertension. (HEPATOLOGY 2008.) [source]


IL23R haplotypes provide a large population attributable risk for Crohn's disease

INFLAMMATORY BOWEL DISEASES, Issue 9 2008
Kent D. Taylor PhD
Abstract Background: The IL-23 pathway plays a pivotal role in the development of chronic mucosal inflammation seen in the inflammatory bowel diseases. Multiple studies have now established the contribution of the interleukin 23 receptor gene (IL23R) to Crohn's disease (CD) risk in general and of the IL23R R381Q variant in particular. The aim of this work was to estimate the total contribution of this gene to CD risk test using a haplotype approach. Methods: In all, 763 CD subjects and 254 controls were genotyped for single nucleotide polymorphisms in the IL23R gene using Illumina and ABI methods. Haplotypes were assigned using PHASEv2 and tested for association with CD by chi-square and permutation. Results: Haplotypes with both increased and decreased risk for CD were observed in 2 of the 4 observed blocks (Block 2 H1: 55.4% control, 64% CD, P = 0.019; H2: 64.5% control, 54.4% CD, P = 0.006; Block 3 H1: 55.8% control, 64.4% CD, P = 0.013; H2: 47.0% control, 36.6% CD, P = 0.001). The population attributable risk for these haplotypes was substantially larger than that estimated for the IL23R R381Q variant (Block 2 H1 and block 3 H1 ,20%, compared with ,4% for Block 3 H6, containing the variant). Conclusions: These observations suggest that IL23R makes a substantial contribution to CD susceptibility, larger than that estimated from the population frequency of the R381Q variant. These observations also support the expectation that finding "hits" from genomewide association studies will be but an important chapter in the story of unraveling the genetic contribution to CD, rather than the final chapter that brings clarity to all the plot twists of a complicated story. (Inflamm Bowel Dis 2008) [source]


Greater vegetable and fruit intake is associated with a lower risk of breast cancer among Chinese women

INTERNATIONAL JOURNAL OF CANCER, Issue 1 2009
Cai-Xia Zhang
Abstract The effect of vegetable and fruit consumption on breast cancer risk is controversial. We examined the association between vegetable and fruit intake and breast cancer risk in a hospital-based case,control study conducted in Guangdong, China. Four hundred and thirty-eight cases were frequency matched to 438 controls by age (5-year interval) and residence (rural/urban). Dietary intake was assessed by face-to-face interviews using a validated food frequency questionnaire. Multivariate logistic regression was used to estimate the odds ratios (ORs) and 95% confidence interval (CI) after adjusting for various potential confounders. Total vegetable and fruit intake was found to be inversely associated with breast cancer risk. The ORs of the highest quartile relative to the lowest quartile of total vegetable and fruit intake were 0.28 (95% CI 0.18,0.43) and 0.53 (95% CI 0.34,0.82), respectively. Consumption of individual vegetable and fruit groups such as dark green leafy vegetables, cruciferous vegetables, carrots and tomatoes, banana, watermelon/papaya/cantaloupe were all inversely and significantly related with breast cancer risk. An inverse association was also observed for vitamin A, carotene, vitamin C, vitamin E, and fiber intake. These data indicate that greater intake of vegetables and fruits is associated with a decreased risk of breast cancer among Chinese women residing in Guangdong. © 2009 UICC [source]


Fruit and vegetable consumption and pancreatic cancer risk in the European Prospective Investigation into Cancer and Nutrition

INTERNATIONAL JOURNAL OF CANCER, Issue 8 2009
Alina Vrieling
Abstract Many case-control studies have suggested that higher consumption of fruit and vegetables is associated with a lower risk of pancreatic cancer, whereas cohort studies do not support such an association. We examined the associations of the consumption of fruits and vegetables and their main subgroups with pancreatic cancer risk within the European Prospective Investigation into Cancer and Nutrition (EPIC). EPIC is comprised of over 520,000 subjects recruited from 10 European countries. The present study included 555 exocrine pancreatic cancer cases after an average follow-up of 8.9 years. Estimates of risk were obtained by Cox proportional hazard models, stratified by age at recruitment, gender, and study center, and adjusted for total energy intake, weight, height, history of diabetes mellitus, and smoking status. Total consumption of fruit and vegetables, combined or separately, as well as subgroups of vegetables and fruits were unrelated to risk of pancreatic cancer. Hazard ratios (95% CI) for the highest versus the lowest quartile were 0.92 (0.68,1.25) for total fruit and vegetables combined, 0.99 (0.73,1.33) for total vegetables, and 1.02 (0.77,1.36) for total fruits. Stratification by gender or smoking status, restriction to microscopically verified cases, and exclusion of the first 2 years of follow-up did not materially change the results. These results from a large European prospective cohort suggest that higher consumption of fruit and vegetables is not associated with decreased risk of pancreatic cancer. © 2008 Wiley-Liss, Inc. [source]


Risks of cancer among a cohort of 23,935 men and women with osteoporosis

INTERNATIONAL JOURNAL OF CANCER, Issue 8 2008
Katherine A. McGlynn
Abstract Low hormone levels among persons with osteoporosis may decrease risk of some cancers. Other osteoporosis risk factors, such as smoking and alcohol consumption, however, may increase risk. As these deleterious factors are more often associated with osteoporosis diagnosed prior to age 70 years, cancer risk may be higher in these younger persons than in the general population. To examine this hypothesis, a cohort study of 23,935 persons with osteoporosis was conducted in Denmark. Patients hospitalized with osteoporosis between 1978 and 1993 were identified in the Danish Inpatient Register. Linkage to the Danish Cancer Registry identified all cancer outcomes through 2003. Standardized incidence ratios (SIR) and 95% confidence intervals (95%CI) were calculated to compare cancer incidence in the cohort with that in the general population. Persons diagnosed prior to age 70 years were at increased cancer risk (women: SIR = 1.11, 95%CI = 1.04,1.19; men: SIR = 1.31, 95%CI = 1.13,1.50) due, in part, to increased risks of cancers of the buccal cavity, esophagus, liver, pancreas and lung. Persons diagnosed at ages 70 and older were at decreased risk (women: SIR = 0.91, 95%CI = 0.87,0.96; men: SIR = 0.89, 0.77,1.01) due, in part, to decreased risks of breast, endometrial, colon, rectal and brain cancers in women and prostate cancer in men. These results suggest that risk factors associated with earlier onset osteoporosis may be associated with increased risk of cancer. Conversely, factors associated with later onset osteoporosis may be related to a decreased risk of cancer. © 2007 Wiley-Liss, Inc. [source]


5,-Reductase type 2 gene variant associations with prostate cancer risk, circulating hormone levels and androgenetic alopecia

INTERNATIONAL JOURNAL OF CANCER, Issue 4 2007
Vanessa M. Hayes
Abstract Controversy exists over the significance of associations between the SRD5A2 (5,-reductase type 2) polymorphisms, A49T and V89L, and risk of prostate cancer. These potentially functional polymorphisms may alter life-long exposure to androgens with subsequent effects on male health and aging. The aim of this study was to examine the association of these variants with prostate cancer risk, plasma hormone levels and androgenetic alopecia. Subjects include 827 cases and 736 controls from an Australian population-based case,control study of prostate cancer. Information on prostate cancer risk factors and patterns of balding were collected. Plasma levels of testosterone, 3,-diol glucuronide (3,-diolG), dehydroepiandrosterone sulfate, androstenedione, sex hormone-binding globulin and estradiol were measured for controls. No associations with the V89L polymorphism were found. Carriers of the rarer A49T A allele were at a 60% higher risk of prostate cancer (OR = 1.60; 95% CI 1.09,2.36; p = 0.02) and 50% lower risk of vertex and frontal balding (p = 0.03) compared with men homozygous for the more common G allele. Although we found little evidence of association between this variant and plasma levels of 5 measured androgens, circulating 3,-diolG levels were 34% lower in A49T A allele carriers (p < 0.0001). Our study provides evidence that the SRD5A2 A49T A variant is associated with an increased risk of prostate cancer, lower levels of circulating 3,-diolG and decreased risk of baldness. These findings raise important questions with respect to previous assumptions concerning hormonal influences on prostate cancer risk in ageing males. © 2006 Wiley-Liss, Inc. [source]


Preschool diet and adult risk of breast cancer

INTERNATIONAL JOURNAL OF CANCER, Issue 3 2006
Karin B. Michels
Abstract Events before puberty may affect adult risk of breast cancer. We examined whether diet during preschool age may affect a woman's risk of breast cancer later in life. We conducted a case-control study including 582 women with breast cancer and 1,569 controls free of breast cancer selected from participants in the Nurses' Health Study and the Nurses' Health Study II. Information concerning childhood diet of the nurses at ages 3,5 years was obtained from the mothers of the participants with a 30-item food-frequency questionnaire. An increased risk of breast cancer was observed among woman who had frequently consumed French fries at preschool age. For one additional serving of French fries per week, the odds ratio (OR) for breast cancer adjusted for adult life breast cancer risk factors was 1.27 (95% confidence interval [CI] = 1.12,1.44). Consumption of whole milk was associated with a slightly decreased risk of breast cancer (covariate-adjusted OR for every additional glass of milk per day = 0.90; 95% CI = 0.82,0.99). Intake of none of the nutrients calculated was related to the risk of breast cancer risk in this study. These data suggest a possible association between diet before puberty and the subsequent risk of breast cancer. Differential recall of preschool diet by the mothers of cases and controls has to be considered as a possible explanation for the observed associations. Further studies are needed to evaluate whether the association between preschool diet and breast cancer is reproducible in prospective data not subject to recall bias. © 2005 Wiley-Liss, Inc. [source]


Coffee consumption and the risk of primary liver cancer: Pooled analysis of two prospective studies in Japan

INTERNATIONAL JOURNAL OF CANCER, Issue 1 2005
Taichi Shimazu
Abstract Although case-control studies suggested that coffee consumption is associated with a decreased risk of liver cancer, no prospective cohort study has been carried out. To examine the association between coffee consumption and the risk of liver cancer, we conducted a pooled analysis of data available from 2 cohort studies in Japan. A self-administered questionnaire about the frequency of coffee consumption and other health habits was distributed to 22,404 subjects (10,588 men and 11,816 women) in Cohort 1 and 38,703 subjects (18,869 men and 19,834 women) in Cohort 2, aged 40 years or more, with no previous history of cancer. We identified 70 and 47 cases of liver cancer among the subjects in Cohort 1 (9 years of follow-up with 170,640 person-years) and Cohort 2 (7 years of follow-up with 284,948 person-years), respectively. We used Cox proportional hazards regression analysis to estimate the relative risk (RR) and 95% confidence interval (CI) of liver cancer incidence. After adjustment for potential confounders, the pooled RR (95% CI) of drinking coffee never, occasionally and 1 or more cups/day were 1.00 (Reference), 0.71 (0.46,1.09) and 0.58 (0.36,0.96), respectively (p for trend = 0.024). In the subgroup of subjects with a history of liver disease, we found a significant inverse association between coffee consumption and the risk of liver cancer. Our findings support the hypothesis that coffee consumption decreases the risk of liver cancer. Further studies to investigate the role of coffee in prevention of liver cancer among the high-risk population are needed. © 2005 Wiley-Liss, Inc. [source]


Risk factors for neuropsychiatric symptoms in dementia: the Cache County Study

INTERNATIONAL JOURNAL OF GERIATRIC PSYCHIATRY, Issue 9 2006
M. Steinberg
Abstract Objective To investigate the probability of individual neuropsychiatric symptoms in dementia patients as a function of eight risk factors. Methods In the Cache County Study, we administered the Neuropsychiatric Inventory (NPI) to 328 dementia patients at baseline. Approximately 18 months later, we re-administered the NPI to 184 participants available for follow-up. Generalized estimating equation methods were used to model the probability of individual neuropsychiatric symptoms as a function of: gender, age, education, dementia type and severity, APOE status, time of observation, and general medical health. Results Women showed increased tendency toward anxiety, [odds ratio (OR) 2.22, 95% confidence interval (CI) 1.31,3.76] and delusions (OR 2.15, CI 1.22,3.78), but older persons of both sexes showed less tendency toward anxiety. Dementia severity increased the tendency toward hallucinations and agitation (OR 2.42, CI 1.81,3.23) and decreased risk of depression. Positive APOE ,4 status increased the tendency toward aberrant motor behavior (OR 1.84, CI 1.05,3.22). Among dementia diagnoses, those with Alzheimer's disease showed decreased tendency toward agitation (OR 0.58, CI 0.35,0.95), depression (OR 0.56, CI 0.33,0.96) and disinhibition (OR 0.46, CI 0.24,0.88). Later time of observation increased risk of aberrant motor behavior and delusions, and more serious medical comorbidity increased risk of, agitation, irritability, disinhibition, and aberrant motor behavior. Conclusions Gender, age, dementia severity, APOE ,4, dementia diagnosis, time of observation, and general medical health appear to influence the occurrence of individual neuropsychiatric symptoms. Copyright © 2006 John Wiley & Sons, Ltd. [source]


Predictors of Interleukin-6 Elevation in Older Adults

JOURNAL OF AMERICAN GERIATRICS SOCIETY, Issue 9 2009
Shuhan Zhu BS
OBJECTIVES: To investigate the characteristics of older adults who develop high interleukin-6 (IL-6) levels at 3-year follow-up. DESIGN: Population-based study of adults living in Tuscany, Italy. SETTING: Community. PARTICIPANTS: Adults aged 65 and older and were selected for this study. Of 1,155 baseline participants aged 65 and older, 741 had IL-6 measurements at baseline and 3-year follow-up. MEASUREMENTS: The uppermost quartile of IL-6 was used as the threshold for defining high IL-6 (,4.18 pg/mL). Serum IL-6 levels were assessed using enzyme immunoassay. RESULTS: Of the 581 participants with IL-6 levels less than 4.18 pg/mL at baseline, 106 (18.2%) had developed high IL-6 at follow-up. Although women had lower IL-6 levels at baseline than men, the risk of developing high IL-6 did not differ according to sex. High adiposity, defined as a body mass index of 30.0 kg/m2 or higher (odds ratio (OR)=2.63, 95% confidence interval (CI)=1.40,4.96), and large waist circumference, defined as 102 cm or greater for men and 88 cm or greater for women (OR=2.05, 95% CI=1.24,3.40), were significant predictors of developing high IL-6 at follow-up. Other significant predictors were presence of three or more chronic diseases (OR=3.66, 95% CI=1.54,8.70), higher baseline IL-6 (OR=1.82, 95% CI=1.39,2.38) and higher white blood cell count (OR=1.24, 95% CI=1.06,1.45). Faster walking speed associated with decreased risk of progressing to elevated IL-6 (OR=0.83, 95% CI=0.74,0.92). CONCLUSION: Older age, greater adiposity, slower walking speed, higher disease burden, and higher white blood cell count were associated with greater risk of IL-6 elevation over a 3-year period. Future research should target older adults with these characteristics to prevent progression to a proinflammatory state. [source]


Antidiabetic Drug Therapy of African-American and White Community-Dwelling Elderly Over a 10-Year Period

JOURNAL OF AMERICAN GERIATRICS SOCIETY, Issue 12 2003
Catherine I. Lindblad PharmD
Objectives: To determine the prevalence and predictors of antidiabetic medication use over a 10-year period in a general population of African-American and white community-dwelling elderly. Design: Survey. Setting: Five adjacent counties (one urban and four rural) in the Piedmont area of North Carolina. Participants: Those aged 65 and older present at the baseline (n=4,136), second (n=3,234), third (n=2,508), and fourth (n=1,633) in-person waves of the Duke Established Populations for Epidemiologic Studies of the Elderly. Measurements: The use of six discrete categories of antidiabetic medications (insulin, first-generation oral sulfonylureas, second-generation oral sulfonylureas, metformin, oral combination therapy, and insulin combination therapy) was determined. Multivariate analyses, using weighted data adjusted for sampling design, were conducted to assess the association between antidiabetic medication use and race and other sociodemographic, health-status, and access-to-healthcare factors at baseline and 10 years later. Results: Antidiabetic medications were taken by 21.4% of the population at baseline; this increased to 28.1% at the 10-year follow-up (P<.001). Insulin was the most commonly used drug at baseline (7.9%). The use of second-generation sulfonylureas increased, and use of first-generation sulfonylureas decreased over the 10-year time period. Combination antidiabetic therapy and metformin use was infrequent throughout the study. Multivariate analyses revealed that, at baseline, African Americans were nearly twice as likely (adjusted odds ratio (AOR)=1.93, 95% confidence interval (CI)=1.46,2.54) to receive any antidiabetic medication as their white counterparts. Other significant (P<.05) factors were hypertension (AOR=1.38, 95% CI=1.03,1.84), stroke (AOR=1.98, 95% CI=1.43,2.73), one or more mobility difficulties (AOR=1.29, 95% CI=1.01,1.66), continuity of care (AOR=1.74, 95% CI=1.20,2.54), and multiple doctor visits (1,4 visits, AOR=1.69, 95% CI=1.08,2.65; ,5 visits, AOR=3.15, 95% CI=1.95,5.07). Being underweight (AOR=0.45, 95% CI=0.30,0.67) and being cognitively impaired (AOR=0.60, 95% CI=0.41,0.87) were factors significantly (P<.05) associated with a decreased risk of antidiabetic medication use. At the 10-year follow-up, similar trends were seen associating these sociodemographic, health-status, and access-to-healthcare factors with antidiabetic medication use. Conclusion: Antidiabetic medication use is common and increases over time for community-dwelling elderly. Race is significantly associated with antidiabetic medication use, even after controlling for other sociodemographic, health-status, and access-to-healthcare variables. [source]


The Effects of Mammographic Detection and Comorbidity on the Survival of Older Women with Breast Cancer

JOURNAL OF AMERICAN GERIATRICS SOCIETY, Issue 6 2002
Carol P. McPherson MSW
OBJECTIVES: To determine an upper age limit or quantifiable level of comorbidity that would render mammography screening ineffectual in decreasing mortality in women aged 65 and older. DESIGN: Retrospective cohort study. SETTING: Upper midwestern United States. PARTICIPANTS: Five thousand one hundred eighty-six predominantly Caucasian women aged 65 to 101 diagnosed with invasive breast cancer from 1986 through 1994. Data were obtained from The Upper Midwest Tumor Registry System, a regional consortium database in Minnesota, North Dakota, and South Dakota. MEASUREMENTS: Relative risks (RRs) of death were computed for patients with mammographically detected tumors, stratified by age and comorbidity. Survival analysis was performed, stratified by level of comorbidity and method of tumor detection. RESULTS: Patients with mammographically detected tumors and no comorbidity experienced significantly lower RRs of death in every age group (range P < .001 to P = .039). Women with mammographically detected tumors and mild to moderate comorbidity had RRs of death as follows: age 65 to 69 (RR = 0.32, 95% confidence interval (CI) = 0.15,0.69), age 70 to 74, (RR = 0.45, 95% CI = 0.22,0.91); age 75 to 79 (RR = 0.47, 95% CI = 0.25,0.88), age 80 and older (RR = 0.52, 95% CI = 0.33,0.80). Women with severe or multiple comorbidities experienced no improvement in survival with mammographically detected tumors. CONCLUSIONS: Mammographic detection of breast cancer may be associated with a significantly decreased risk of death for older women of all ages, even for women with mild to moderate levels of comorbidity, but for older women with severe or multiple comorbidities, mammography is not associated with improvement in overall survival. [source]


Concurrent and prospective associations between facial affect recognition accuracy and childhood antisocial behavior

AGGRESSIVE BEHAVIOR, Issue 5 2010
Erica Bowen
Abstract This study examined the concurrent and prospective associations between children's ability to accurately recognize facial affect at age 8.5 and antisocial behavior at age 8.5 and 10.5 years in a sub sample of the Avon Longitudinal Study of Parents and Children cohort (5,396 children; 2,644, 49% males). All observed effects were small. It was found that at age 8.5 years, in contrast to nonantisocial children; antisocial children were less accurate at decoding happy and sad expressions when presented at low intensity. In addition, concurrent antisocial behavior was associated with misidentifying expressions of fear as expressions of sadness. In longitudinal analyses, children who misidentified fear as anger exhibited a decreased risk of antisocial behavior 2 years later. The study suggests that concurrent rather than future antisocial behavior is associated with facial affect recognition accuracy. Aggr. Behav. 36:305,314, 2010. © 2010 Wiley-Liss, Inc. [source]


Body mass index, alcohol, tobacco and symptomatic gallstone disease: a Swedish twin study

JOURNAL OF INTERNAL MEDICINE, Issue 5 2007
D. Katsika
Abstract. Background/Aims., Both genetic and environmental factors are involved in the pathogenesis of gallstone disease (GD). We aimed to examine the association between symptomatic GD and overweight (body mass index, BMI, 25,30 kg m,2), obesity (BMI > 30 kg m,2), alcohol, smoking and smoke-free tobacco by analysing a large twin population. Methods., The Swedish Twin Registry (STR) was linked to the Swedish Hospital Discharge and Causes of Death Registries for GD and GD-surgery related diagnoses. Weight, height, use of alcohol, smoking and smoke-free tobacco were provided by STR and analysed for possible associations by conditional logistic regression. Results., Overweight and obesity were associated with a significantly higher risk for symptomatic GD in the whole study population (OR 1.86 and OR 3.38; CI: 1.52,2.28 and 2.28,5.02 respectively). High alcohol consumption was associated with a lower risk for GD in the whole population (OR 0.62; CI: 0.51,0.74) with no difference between discordant monozygotic and dizygotic twins (OR 1.08 and OR 0.96; CI: 0.82,1.42 and 0.79,1.16). Smoking or smoke-free tobacco was not correlated with GD. Conclusion., Consistent with epidemiological studies, we found positive associations between BMI and the development of symptomatic GD. High alcohol consumption was associated with a decreased risk against GD. Tobacco use has no impact on GD. [source]


Pneumonia in HIV-infected patients in the HAART era: Incidence, risk, and impact of the pneumococcal vaccination

JOURNAL OF MEDICAL VIROLOGY, Issue 4 2004
C. López-Palomo
Abstract The objective of this study was to assess the factors implicated in an increased or decreased risk of pneumonia, with particular attention to the response to highly active antiretroviral therapy (HAART) and the effect of the polysaccharide 23-valent pneumococcal vaccination in 300 human immunodeficiency virus (HIV)-infected adults followed-up for a median of 35.6 months. Pneumococcal pneumonia occurred in 12 patients and all bacterial pneumonia (pneumonia caused by Streptococcus pneumoniae or other bacteria, as well as those with negative cultures but presumably bacterial in origin) in 40 patients. In the univariate analysis, immunodepressed patients (defined as those with less than 200 CD4+ T cell/,l), those without immunological response to HAART (defined as an increase of 25% of CD4+ T lymphocyte count), patients with previous admissions to hospital and those with cotrimoxazole or Mycobacterium avium intracellulare prophylaxis showed a higher incidence of both pneumococcal and all bacterial pneumonia. Multivariate analysis demonstrated that the presence of pneumococcal pneumonia was associated with a CD4+ lymphocyte count at the time of HIV diagnosis <200 cells/,l. The multivariate model that was more valid for prediction of all bacterial pneumonia included a CD4+ T cell count <200 cells/,l and absence of immunological response to HAART. Only in patients with a baseline CD4+ T cell count lower than 200/,l and immunological response to HAART, a near significant lower incidence of all bacterial pneumonia was observed after vaccination. Thus, these results do not support an important additional protective effect of 23-valent pneumococcal vaccine in HIV-patients with immunological response to HAART. J. Med. Virol. 72:517,524, 2004. © 2004 Wiley-Liss, Inc. [source]


HDL2 of Heavy Alcohol Drinkers Enhances Cholesterol Efflux From Raw Macrophages via Phospholipid-Rich HDL2b Particles

ALCOHOLISM, Issue 6 2008
Sanna M. Mäkelä
Background:, Alcohol consumption is associated with increased serum high density lipoprotein (HDL) cholesterol levels and a decreased risk for the development of atherosclerosis. However, the effects of heavy alcohol intake on reverse cholesterol transport, one of the key anti-atherogenic processes related to HDL, are poorly known. Methods:, The ability of total HDL as well as HDL2 and HDL3 subclasses to promote cholesterol efflux from 3H-cholesterol-labeled RAW 264.7 macrophages was studied among 6 heavy alcohol drinkers and 6 controls. Distribution of HDL subclasses was analyzed by 4 to 30% native gradient gels. Serum phospholipid transfer protein (PLTP) and cholesteryl ester transfer protein (CETP) activities were analyzed among several other biochemical measures. Results:, Cholesterol efflux to HDL2 of heavy drinkers was 22% (p = 0.025) higher relative to controls. The increase in HDL2 phospholipids, with a concomitant 2-fold (p = 0.055) increase in large HDL2b particles, was associated with enhanced cholesterol efflux to HDL2. Interestingly, the cholesterol efflux to HDL3 did not differ between the 2 study groups. These findings may be partially explained by a decreased CETP activity (,26%, p = 0.037) and an increased PLTP activity (39%, p = 0.045) in heavy drinkers. Conclusions:, The increased cholesterol efflux potential of HDL2 is most likely an anti-atherogenic feature linked to heavy alcohol consumption. The cholesterol efflux and HDL phospholipids also associated strongly within the whole study group (rs = 0.910, p , 0.01) suggesting a common pathway of enhanced cholesterol efflux via enlarged phospholipid-rich HDL particles. [source]


Recombinant Human Thyrotropin Administration Enhances Thyroid Uptake of Radioactive Iodine in Hyperthyroid Cats

JOURNAL OF VETERINARY INTERNAL MEDICINE, Issue 6 2008
I. Van Hoek
Background: Hyperthyroidism is the most diagnosed endocrine disorder in cats and radioiodine (131I) is the treatment of choice. The dose emission rate and radioactivity in urine, saliva, and on hair and paws are determined by the dose of administered 131I. A dose reduction of therapeutic 131I could possibly be achieved after recombinant human thyrotropin (rhTSH) administration as in humans with nodular goiter. Hypothesis: rhTSH will increase radioiodine uptake in hyperthyroid cats. Animals: Five hyperthyroid cats. Methods: Twenty-five micrograms rhTSH (day 1) or 2 mL 0.9% sodium chloride (NaCl) (day 9) was injected IV. One hour later, 11.4 ± 4.1 (mean ± SD) MBq 123I was injected IV. Radioactive iodine uptake (RAIU) was measured 6, 12, and 24 hours after rhTSH (RAIU-rhTSH) or NaCl (RAIU-blanco) injection. Blood samples for measurement of TT4 were taken before injection of rhTSH or NaCl (TT40) and at the time of imaging. Results: Percentages of RAIU-rhTSH (and RAIU-blanco) at 6, 12, and 24 hours after administration of rhTSH were 34 ± 18 (31 ± 21), 46 ± 20 (38 ± 18), and 47 ± 15 (36 ± 14). There was a statistically significant effect of rhTSH administration on RAIU (P= .043) but not on serum TT4 concentration. Baseline serum TT40 concentration influenced RAIU-rhTSH significantly at 6 hours (P= .037). Conclusion and Clinical Importance: The increased RAIU observed after rhTSH administration in hyperthyroid cats could lead to a lower therapeutic dose of 131I after rhTSH administration in hyperthyroid cats and decreased risk of environmental and owner contamination during and after hospitalization. [source]


Proliferative alloresponse of T-cytotoxic cells identifies rejection-prone children with steroid-free liver transplantation

LIVER TRANSPLANTATION, Issue 8 2009
Chethan Ashokkumar
Donor-induced and third-party,induced proliferation of T-helper and T-cytotoxic (Tc) cells and their naïve and memory subsets was evaluated simultaneously in single blood samples from 77 children who received steroid-free liver transplantation (LTx) after induction with rabbit anti-human thymocyte globulin. Proliferation was measured by dilution of the intravital dye carboxyfluorescein succinimidyl ester (CFSE) in a 3- to 4-day mixed lymphocyte response coculture. The ratio of donor/third-party,induced proliferated (CFSElow) T-cells was reported as the immunoreactivity index (IR) for each subset. Rejectors were defined as those who experienced biopsy-proven acute cellular rejection within 60 days of the assay. IR > 1 signified increased risk of rejection, and IR < 1 implied decreased risk. Demographics for 32 rejectors and 45 nonrejectors were similar. Proliferated CFSElow T-cells and subsets were significantly higher among rejectors compared with nonrejectors. In 33 of 77 randomly selected children, logistic regression, leave-one-out cross-validation, and receiver operating characteristic analyses showed that the IR of Tc cells was best associated with biopsy-proven rejection (sensitivity > 75%, specificity > 88%). Sensitivity and specificity were replicated in the remaining 44 children who composed the validation cohort. IR of CFSElow Tc cells correlated significantly with IR of proinflammatory, allospecific CD154+ Tc cells (r = 0.664, P = 0.0005) and inversely with IR of allospecific, anti-inflammatory, cytotoxic T lymphocyte antigen 4,positive Tc cells (r = ,0.630, P = 0.007). In conclusion, proliferative alloresponses of Tc cells can identify rejection-prone children receiving LTx. Liver Transpl 15:978,985, 2009. © 2009 AASLD. [source]