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D. This Study (d + this_study)
Selected AbstractsVitamin D deficiency in a multinational refugee populationINTERNAL MEDICINE JOURNAL, Issue 12 2007H. D. Wishart Abstract Background: Populations with increased skin pigmentation who have migrated to countries of high latitude are at increased risk of low vitamin D. This study aimed to determine the prevalence of low vitamin D among the refugee population arriving in New Zealand. Methods: An audit of all refugees arriving at the national refugee resettlement centre from May 2004 to May 2005 was carried out. Serum 25-hydroxyvitamin D3 levels were measured and defined as normal (50,150 nmol/L) or low, with low subdivided into insufficient (25 to <50 nmol/L) and deficient (<25 nmol/L). Whether vitamin D status varied with age and sex was determined. Results: Vitamin D was measured in 869 (99%) of the refugees and was low in 470 (54%, 95% confidence interval (CI) 51,57%). It was insufficient in 323 (37%, 95%CI 34,41%) and deficient in 147 (17%, 95%CI 15,20%). Female sex was associated with at least a 10 times increased risk of vitamin D deficiency (relative ratio 13.93, 95%CI 10.15,17.96). Women aged between 17 and 45 years and men aged 46 years and more were at greatest risk. Conclusion: Poor vitamin D status is prevalent among refugees arriving in New Zealand. Women, particularly those of child-bearing age are at greatest risk. Screening and ongoing surveillance for vitamin D deficiency should be considered for all recent refugee immigrants to New Zealand. [source] Time series analysis of ultraviolet B radiation and type 1 diabetes in NewfoundlandPEDIATRIC DIABETES, Issue 2 2008Scott Sloka Background:, Type 1 diabetes mellitus (T1DM) has been previously been associated with decreased levels of vitamin D. This study investigates the temporal association between average daily ultraviolet B (UVB) irradiance and T1DM in Newfoundland. Methods:, A complete list of patients diagnosed with T1DM in the province of Newfoundland and Labrador was constructed using multiple sources. Pooled and unpooled monthly incidence data along with monthly UVB measurements were used to build a time series transfer function model. The model was used to predict the future incidence of T1DM based on previous monthly trends, and these predictions were compared with actual measured incidences. Results:, A seasonal variation in pooled monthly incidence was observed. The transfer function model was able to reasonably predict the future incidence of T1DM based on previous observations and monthly UVB measurements. Tests of seasonality demonstrated a significant seasonal trend (p = 0.0003). Conclusions:, This study suggests that erythemal UVB radiation may be temporally associated with the incidence of T1DM. [source] Failure to normalize parathyroid hormone during treatment of vitamin D deficiency in Asian patientsCLINICAL ENDOCRINOLOGY, Issue 5 2004Steven R. Peacey Summary objective, Vitamin D deficiency and osteomalacia remain commonplace within the Asian community in Bradford. The treatment of vitamin D deficiency and osteomalacia is cheap and effective, but there are few data on long-term outcomes. Studies have suggested that a minority of patients fail to normalize parathyroid hormone (PTH) levels during therapy with vitamin D. This study aimed to determine what proportion of Asian patients with vitamin D deficiency and secondary hyperparathyroidism normalize PTH levels following therapy with oral vitamin D and to examine reasons for failure to normalize PTH. design, This study examined the impact of an oral regimen of vitamin D 800 i.u. (20 micrograms) and calcium 1000 mg daily, on PTH levels within an endocrinology outpatient clinic. patients, 51 (4M:47F) Asian patients, median age 39 years (range 16,77 years) with vitamin D deficiency (25-hydroxyvitamin D < 25 nmol/l) and secondary hyperparathyroidism (PTH > 5·7 pmol/l). measurements, All patients had at least one follow-up measurement of PTH and calcium during treatment. A subgroup of patients gave consent for examination of GP-prescribing records to indirectly asses adherence to therapy. results, PTH normalized in only 28/51 (55%) patients (group N) and failed to normalize in 23/51 (45%) patients (group F). Baseline patient characteristics including: age, basal serum 25-hydroxyvitamin D (25OHD), basal serum PTH, basal serum calcium and post treatment serum calcium, were similar in groups N and F. Mild hypercalcaemia occurred in only two (3·9%) patients. The proportion of prescriptions collected by patients in group N was 75 (17,100)% and in group F was 17 (0,100)%, P < 0·0001. conclusions, This study has demonstrated that long-term oral treatment with vitamin D and calcium, fails to normalize PTH in a significant proportion of patients with vitamin D deficiency and osteomalacia. This is most likely related to lack of adherence to long-term treatment. Improved ways of treating this condition need to be explored. [source] Combining Antimicrobial and Steam Treatments in a Vacuum-packaging System to Control Listeria monocytogenes on Ready-to-eat FranksJOURNAL OF FOOD SCIENCE, Issue 2 2005Rong Y. Murphy ABSTRACT: This study was to evaluate the effectiveness of steam or steam in combination with an antimicrobial agent to control Listeria monocytogenes on ready-to-eat (RTE) franks. The franks were surface-inoculated to contain 6 or 3 log10(colony-forming units [CFU])/cm2 of L. monocytogenes and treated with steam or steam in combination with an antimicrobial agent, immediately followed by vacuum-sealing the top films of frank packages (6 franks per package in a single layer). Three log (CFU) /cm2 of reductions were achieved at the both inoculation levels for L. monocytogenes on franks. At an inoculation level of 3 logs, no outgrowth of L. monocytogenes was obtained on the treated franks after storing at 4.4°C or 16°C for a combined 47 d. This study provided an alternative approach for controlling L. monocytogenes in packaged franks. [source] | ||||||||||