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Postpartum
Kinds of Postpartum Terms modified by Postpartum Selected AbstractsHypothalamic Vasopressin Gene Expression Increases in Both Males and Females Postpartum in a Biparental RodentJOURNAL OF NEUROENDOCRINOLOGY, Issue 2 2000Z. X. Wang In previous studies, the closely related neuropeptide hormones oxytocin and vasopressin have been implicated in the central mediation of parental behaviour. Several studies in rats and sheep have demonstrated a role for oxytocin in the initiation of maternal behaviour. Recently, a few studies in a biparental species, the prairie vole (Microxytocinus ochrogaster) have suggested that vasopressin is important for paternal care. The present study investigated this latter possibility by measuring changes in vasopressin and oxytocin hypothalamic gene expression 1 day and 6 days following parturition in prairie voles which show paternal care and in montane voles (M. montanus) which lack paternal care. In prairie voles, vasopressin gene expression increased in both males and females postpartum, relative to sexually naive controls. In the non-paternal montane vole, no change in vasopressin gene expression was observed in either sex. In contrast to this species difference in vasopressin gene expression, hypothalamic oxytocin gene expression increased in both prairie and montane vole females, but not in males of either species. To augment measures of gene expression, we assessed vasopressin (V1a) and oxytocin receptor binding in both species. Although forebrain vasopressin V1a receptor binding was not altered following parturition in either species, oxytocin receptor binding increased in the ventromedial nucleus of the hypothalamus in females, but not males, in both prairie and montane voles. In summary, vasopressin gene expression increases in both males and females postpartum in a biparental species and oxytocin gene expression and receptor binding increase selectively in females. These results are consistent with earlier reports of a role for vasopressin in paternal care and for oxytocin in maternal behaviour. [source] Prebirth Psychosocial Factors as Predictors of Consistency in Contraceptive Use Among Taiwanese Adolescent Mothers at 6 Months PostpartumPUBLIC HEALTH NURSING, Issue 4 2005Ruey-Hsia Wang Abstract,Objective: To assess contraceptive behavior and whether pre-birth psychosocial factors could predict consistency in contraceptive use among adolescent mothers at six-month postpartum. Design: Prospective study. Sample: 104 Taiwanese adolescent mothers. Measurements: Participants completed a contraception questionnaire in their third trimester and a postpartum contraception questionnaire at six-month postpartum. Results: Prior to giving birth, the adolescent mothers most commonly answered that condom use (39.8%) was the contraceptive method they planned to use after delivery. It was also more commonly reported in the postpartum to be the method they actually were using (54.3%). Stepwise logistic regression analysis further showed that a more positive contraceptive attitude (odds ratio = 1.104) and a higher self-efficacy (odds ratio = 1.068) in contraceptive use in the pre-birth period increased the probability that a participant would report that she always used contraceptives in the postpartum period. Nevertheless, a higher score in the pre-birth period in the area of subjective contraceptive norms (odds ratio = 0.978) decreased this probability. The final regression model could correctly classify 81.7% of the participants. Conclusions: Health care professionals should provide adolescent mothers with the information they need to improve their attitude and self-efficacy toward contraception before they enter the postpartum period. [source] Body Condition Change Ante- and Postpartum, Health and Reproductive Performance in German Holstein CowsREPRODUCTION IN DOMESTIC ANIMALS, Issue 2 2009M Hoedemaker Contents The effects of body condition score (BCS) change and status ante- and postpartum (pp) on health and reproductive performance in 234 German Holstein cows from eight dairy farms were evaluated. BCS was determined from 6 weeks antepartum until 20 weeks pp in 2-week intervals. Three and 5 weeks pp progesterone concentrations in blood serum were determined to detect the presence of luteal tissue as an indicator of cyclicity. The incidence of various diseases, percent cycling cows, reproductive measures and culling rate were assessed. Data were subjected to logistic regression to account for possible herd and lactation number effects. Cows with a low BCS status (<3.0) at calving and during early lactation (4,10 weeks pp) were at a higher risk of suffering from lameness (OR 2.9,9.4), not being cycling at 3 and/or 5 weeks pp (OR 2.24,3.99) and being culled (OR 2.56,2.79) than cows in better body condition (,3.0) In addition, cows with a low BCS status at parturition were at a higher risk of developing endometritis (OR 2.95) and becoming pregnant later than 105 days pp (OR 5.92) than cows with a BCS , 3.0. At 10 weeks pp, the risk of dystocia (OR 4.10) or retained placenta (OR 2.78) at the preceding calving and not being pregnant at 200 days pp (OR 2.42) was higher in cows with a BCS < 3.0 than with a BCS , 3.0. Cows with no BCS loss antepartum were more likely to have an interval from calving to first artificial insemination of <80 days and <105 days open, to be cycling at 3 and 5 weeks pp and to be pregnant at 200 days pp than cows with a BCS loss of >0.25 (OR 2.44,6.67). Furthermore, cows with no BCS loss from calving to 4 weeks pp had a lower risk of suffering from displaced abomasum than cows with a slight or a severe BCS loss (OR 0.09,0.07 respectively). In conclusion, our results suggest that body condition loss during the antepartal period affected BCS status at parturition and to a certain extent during lactation which was linked to a higher incidence of reproductive disorders and lameness, a higher culling rate and lower reproductive performance. [source] Blood Lymphocyte Subpopulations, Neutrophil Phagocytosis and Proteinogram During Late Pregnancy and Postpartum in MaresREPRODUCTION IN DOMESTIC ANIMALS, Issue 2 2008R Agrícola Contents The aim of this study was to evaluate peripheral blood lymphocyte subpopulations, neutrophil phagocytic capacity and proteinogram characteristics in mares, during the last trimester of pregnancy and in postpartum. Measurement of phagocytosis and quantification of T-lymphocyte subsets were done by flow cytometry. Quantification of T-lymphocyte subsets was performed with monoclonal antibodies specific for CD2, CD3, CD4 and CD8 cell markers. Natural killer and B-cell counts were estimated mathematically. Serum proteinogram was obtained by electrophoresis. No significant differences were observed between gestation and postpartum on CD4+, CD8+ and NK+ lymphocyte subsets, CD4 : CD8 ratio and phagocytosis. The percentage of cells expressing CD3 (64.2 ± 1.8) and CD2 (68.4 ± 1.7) (Mean ± SEM) was reduced during gestation vs postpartum (69.7 ± 1.5 and 73.8 ± 1.4 respectively) (p < 0.05). During pregnancy, CD19+ (31.6 ± 1.7) was higher than in postpartum (26.2 ± 1.4) (p < 0.05). Total T cells (2911 ± 227 cells/,l), T helper cells (2144 ± 169 cells/,l) and T-cytotoxic cells (767 ± 68 cells/,l) were depressed in pregnancy, when compared with postpartum (4093 ± 337 cells/,l; 3004 ± 276 cells/,l; 1089 ± 94 cells/,l respectively) (p < 0.01). Total white blood cell count was reduced during pregnancy (8815 ± 427 cells/,l) with respect to postpartum (10742 ± 446 cells/,l) (p < 0.01), while neutrophil count did not change. Total proteins, albumin, ,1,,2,,1, ,2, , globulins and albumin : globulin did not differ. Our results suggest that the physiological immune depression occurring in mares, during gestation might be due to T-helper and T-cytotoxic lymphocytes reduction. [source] Maternal and Neonatal Lymphocyte Subpopulations at Delivery and 3 Days Postpartum: Increased Coexpression of CD45 IsoformsAMERICAN JOURNAL OF REPRODUCTIVE IMMUNOLOGY, Issue 1 2004Emilia Juretic Problem:, Huge physiologic changes during parturition involve immune cells. Alterations in maternal and neonatal lymphocytes postpartum might ascertain the subpopulations that are most affected and may possibly be of importance in the process. Method of study:, Peripheral blood was taken from 20 healthy women at vaginal delivery and 3 days later, concomitantly with cord and peripheral blood from their newborns. Lymphocyte immunophenotyping was done by three-color flow-cytometry. Results:, Maternal T helper cells were decreased and natural killer (NK) cells were significantly increased during labor. Percentage of CD4+ and percentage and absolute count of CD8+ cells coexpressing CD45RA and CD45RO antigens were higher than 3 days later. In cord blood NK cells were considerably increased and more CD4+ cells expressed CD45RO antigen. Conclusion:, Coexpression of CD45RA and CD45RO molecules indicates activation of maternal CD4+ and CD8+ lymphocytes. NK cells increase suggests their possible association with parturition processes. Lymphocyte subsets in cord blood correspond to maternal subsets to some extent. [source] Cystatin-C and beta trace protein as markers of renal function in pregnancyBJOG : AN INTERNATIONAL JOURNAL OF OBSTETRICS & GYNAECOLOGY, Issue 5 2005Ayub Akbari Objective To assess the validity of Cystatin-C (Cys-C) and beta trace protein (BTP) as clinical markers of glomerular filtration rate (GFR) in pregnant women. Design Prospective cross sectional study. Setting Obstetric unit of a tertiary care hospital. Population One hundred and thirty-seven normal pregnant women and 13 women postpartum. Methods Twenty-four hour creatinine clearance (CrCl), serum creatinine, Cys-C and BTP concentrations were measured on normal pregnant women in the first trimester (n= 5), second trimester (n= 68) and third trimester (n= 64) and in 13 women postpartum. Data are given as median (2.5th centile, 97.5th centile). Main outcome measures Serum concentrations of Cys-C and BTP compared with creatinine clearance and serum creatinine. Results The median serum creatinine throughout gestation was 53 ,mol/L (39, 71), and median CrCl was 143 mL/minute (91 to 216). Postpartum, creatinine rose to 74 ,mol/L (58, 86) and CrCl decreased to 104 mL/minute (71, 159). For Cys-C, the median concentration was 0.70 mg/L (0.46, 1.32), and 0.54 mg/L (0.36, 0.96) for BTP. Comparing the second and third trimesters, there was no significant difference between CrCl (median 145 vs 141 mL/minute) and BTP concentrations (median 0.51 vs 0.55 mg/L), while median Cys-C was significantly higher in the third trimester (0.61 vs 0.88 mg/L; P < 0.001). Unlike creatinine and BTP, Cys-C levels decreased to 0.72 mg/L (0.57, 0.95) postpartum. The only significant relationship of either of these markers to the standard used for GFR was between Cys-C and CrCl in the third trimester, and the correlation was weak (r= 0.27 for 1/Cys-C vs CrCl). Conclusion These data demonstrate that despite claims to the contrary, Cys-C is a poor marker of GFR during pregnancy. Similarly, BTP shows little promise. [source] Developing Clinical Terms for Health Visiting in the United KingdomINTERNATIONAL JOURNAL OF NURSING TERMINOLOGIES AND CLASSIFICATION, Issue 2003June Clark BACKGROUND The UK health visiting service provides a universalist preventive health service that focuses mainly on families with young children and the elderly or vulnerable, but anyone who wishes can access the services. The principles of health visiting have been formally defined as the search for health needs, the stimulation of awareness of health needs, influencing policies that affect health, and the facilitation of health-enhancing activities. The project is currently in its fourth phase. In phase 1, 17 health visitors recorded their encounters with families with new babies over a period of 3 months; in phase 2, 27 health visitors recorded their encounters with a wider range of clients (769 encounters with 205 families) over a period of 9 months; in phase 3, the system is being used by a variety of healthcare professionals in a specialist program that provides intensive parenting support; phase 4 is developing a prototype of an automated version for point-of-contact recording. UK nursing has no tradition of standardized language and the concept of nursing diagnosis is almost unknown. Over the past decade, however, the government has initiated the development of a standardized terminology (Read codes) to cover all disciplines and all aspects of health care, and it is likely that the emerging SNOMED-CT terminology (a merger of the Read codes with the SNOMED terminology) will be mandated for use throughout the National Health Service (NHS). MAIN CONTENT POINTS The structure and key elements of the Omaha System were retained but the terminology was modified to take account of the particular field of practice and emerging UK needs. Modifications made were carefully tracked. The Problem Classification Scheme was modified as follows: ,All terms were anglicized. ,Some areas , notably relating to antepartum/postpartum, neonatal care, child protection, and growth and development,were expanded. ,The qualifiers "actual,""potential," and "health promotion" were changed to "problem,""risk," and "no problem." ,Risk factors were included as modifiers of "risk" alongside the "signs and symptoms" that qualify problems. The Intervention Classification was modified by substituting synonymous terms for "case management" and "surveillance" and dividing "health teaching, guidance, and counseling" into two categories. The Omaha System "targets" were renamed "focus" and a new axis of "recipient" was introduced in line with SNOMED-CT. The revised terminologies were tested in use and also sent for review to 3 nursing language experts and 12 practitioners, who were asked to review them for domain completeness, appropriate granularity, parsimony, synonymy, nonambiguity, nonredundancy, context independence, and compatibility with emerging multiaxial and combinatorial nomenclatures. Review comments were generally very favourable and modifications suggested are being incorporated. CONCLUSIONS The newly published government strategy for information management and technology in the NHS in Wales requires the rapid development of an electronic patient record, for which the two prerequisites are structured documentation and the use of standardized language. The terminology developed in this project will enable nursing concepts to be incorporated into the new systems. The experiences of the project team also offer many lessons that will be useful for developing the necessary educational infrastructure. [source] Maternal employment and the initiation of breastfeedingACTA PAEDIATRICA, Issue 4 2001S Noble This study examines whether planning to be employed postpartum has an effect on initiation of breastfeeding. Data were collected from questionnaires completed by mothers who were subjects in the prospective, population-based, Avon Longitudinal Study of Pregnancy and Childhood. The mothers of 10 530 full-term singleton infants gave information during pregnancy on their postpartum employment plans and their initial infant feeding methods. Information was also given by 7642 of these mothers on the timing of their postpartum employment plans. Adjusted logistic regression was performed to identify associations between (a) "any" plans to work postpartum and the initiation of breastfeeding, and (b) the timing of the commencement of work postpartum, and the initiation of breastfeeding. A total of 8316 (79%) of the women initiated breastfeeding. The decision to breastfeed was not associated with "any" plans to work postpartum. However, women who planned to commence work prior to 6 wk postpartum were significantly less likely to initiate breastfeeding compared with those not intending to work postpartum. Older, more highly educated women, women who had or were planning to attend childbirth classes, women who were breastfed as infants, women who did not smoke and women who were giving birth to their first child were significantly more likely to initiate breastfeeding. Conclusion: Planning to return to employment prior to 6 wk postpartum reduces the likelihood of initiating breastfeeding. As increasing numbers of mothers are returning to work shortly after the birth of their child, this finding could have implications for maintaining the current level of breastfeeding. [source] Pregnancy and lactation have anti-obesity and anti-diabetic effects in Ay/a miceACTA PHYSIOLOGICA, Issue 2 2010E. N. Makarova Abstract Aim:, Dominant ,yellow' mutation at the mouse agouti locus (Ay) results in obesity. Pregnancy and lactation are characterized by large energy demand. The aim of this study was to investigate whether obesity would develop in pregnant and suckling Ay mice. Methods:, Body weight and food intake in pregnancy, lactation, and after weaning, plasma leptin, insulin, corticosterone and blood glucose concentrations on days 7, 13 and 18 of pregnancy, days 1, 10, 21 and 80 postpartum, glucose and insulin tolerance on pregnancy days 7 and 18 were measured in C57Bl/6J mice of a/a (normal metabolism) and Ay/a genotypes. The same parameters were also measured in age-matched virgin females. Results:, Virgin Ay/a females exhibited hyperphagia, enhanced body weight, glucose intolerance and normal blood parameters at the mating age. With age, they developed obesity, hyperleptinaemia, hyperinsulinaemia and hyperglycaemia. Obesity did not develop in mated Ay/a mice; during suckling, they had equal food intake and body weight as a/a mice. During pregnancy, glucose tolerance was enhanced in Ay/a mice and became equal in both genotypes. In both genotypes, concentrations of hormones increased, and glucose decreased from pregnancy day 7 to day 18 and returned to normal values after parturition. Ay/a mice did not differ from a/a in corticosterone, insulin and glucose levels during pregnancy and lactation, in leptin levels during suckling; however, Ay/a mice had two times higher leptin levels than a/a during pregnancy. After weaning, Ay/a mice began to eat and weigh more than a/a exhibiting normal metabolic parameters for 50 days. Conclusion:, Pregnancy and lactation retard obesity and diabetes development in Ay mice. [source] Symptom features of postpartum depression: are they distinct?,DEPRESSION AND ANXIETY, Issue 1 2008Ira H. Bernstein Ph.D. Abstract The clinical features of postpartum depression and depression occurring outside of the postpartum period have rarely been compared. The 16-item Quick Inventory of Depressive Symptomatology-Self-Report (QIDS-SR16) provides a means to assess core depressive symptoms. Item response theory and classical test theory analyses were conducted to examine differences between postpartum (n=95) and nonpostpartum (n=50) women using the QIDS-SR16. The two groups of females were matched on the basis of age. All met DSM-IV criteria for nonpsychotic major depressive disorder. Low energy level and restlessness/agitation were major characteristics of depression in both groups. The nonpostpartum group reported more sad mood, more suicidal ideation, and more reduced interest. In contrast, for postpartum depression sad mood was less prominent, while psychomotor symptoms (restlessness/agitation) and impaired concentration/decision-making were most prominent. These symptomatic differences between postpartum and other depressives suggest the need to include agitation/restlessness and impaired concentration/decision-making among screening questions for postpartum depression. Depression and Anxiety 0:1,7, 2006. Published 2006 Wiley-Liss, Inc. [source] Two studies on suicidality in the postpartumACTA PSYCHIATRICA SCANDINAVICA, Issue 2 2008R. T. Pinheiro Objective:, Research in the prevalence of and risk factors for suicidality in the postpartum is extremely limited. We present here data on the prevalence of and factors associated with suicidality from two postpartum samples. Method:, The first sample (SC) comprised 317 women consecutively screened for a trial of psychotherapy for postpartum depression. The second sample was a population-based (PB) sample of 386 women. We used the Mini-International Neuropsychiatric Interview (MINI) to assess suicidality in the SC sample and the self-harm question of the Beck Depression Inventory (BDI9) in the PB sample. Results:, According to the MINI and the BDI9, prevalence of high suicide risk was 5.7% and 11.1%, respectively, in the SC sample. Previous suicide attempts and a positive BDI were retained as predictors of suicidality. The BDI9 indicated suicidality in 8.3% of the 386 women in the PB sample; a positive BDI was retained in the multivariate analysis as a risk of suicidality. Conclusion:, Clinicians should enquire vigorously about suicidality in women presenting with depressive symptoms or previous suicide attempts in the postpartum. [source] Elevated corticosterone levels in stomach milk, serum, and brain of male and female offspring after maternal corticosterone treatment in the ratDEVELOPMENTAL NEUROBIOLOGY, Issue 10 2010Susanne Brummelte Abstract Early influences such as maternal stress affect the developmental outcome of the offspring. We created an animal model of postpartum depression/stress based on giving high levels of corticosterone (CORT) to the rat dam, which resulted in behavioral and neural changes in the offspring. This study investigated whether highly elevated levels of maternal CORT during pregnancy or the postpartum result in higher levels of CORT in the stomach milk, serum, and brain of offspring. Dams received daily injections of CORT (40 mg/kg) or oil (control) either during pregnancy (gestational days 10,20) or the postpartum (Days 2,21). Pups that were exposed to high gestational maternal CORT had higher CORT levels in serum, but not in stomach milk or brain, on postnatal day (PND) 1. However, on PND7, pups that were exposed to high postpartum maternal CORT had higher CORT levels in stomach milk and brain, but not in serum. Conversely on PND18, pups that were exposed to high postpartum maternal CORT had higher CORT levels in serum, but not in brain (prefrontal cortex, hypothalamus, or hippocampus). Moreover, 24 h after weaning, there were no significant differences in serum CORT levels between the groups. Thus, CORT given to the dam during pregnancy or the postpartum results in elevated levels of CORT in the offspring, but in an age- and tissue-dependent manner. Developmental exposure to high CORT could reprogram the HPA axis and contribute to the behavioral and neural changes seen in adult offspring. © 2010 Wiley Periodicals, Inc. Develop Neurobiol 70: 714,725, 2010 [source] Vaginocervical stimulation of Ewes induces the rapid formation of a new bond with an alien young without interfering with a previous bondDEVELOPMENTAL PSYCHOBIOLOGY, Issue 6 2010F. Lévy Abstract Ewes form a selective olfactory memory for their lambs after 2,hr of mother,young interaction following parturition. Mothers will subsequently reject any strange lamb at suckling. The present study investigated whether artificial vaginocervical stimulation (VCS) allows the formation of a selective bond with an unfamiliar lamb and whether it interferes with the maintenance of the bond formed with the familiar lamb. At 2,hr postpartum, mothers were separated from their familiar lamb after having formed a selective bond with it and were given 10,min of mechanical VCS. In the "VCS,+,lamb" group (n,=,24) an unfamiliar lamb was left with the ewe for 2,hr whereas in the "VCS no lamb" group (n,=,26) the mother was left alone for the same period of time. Ewes of the "no VCS" group (n,=,14) did not receive any VCS. In the majority of animals of the "VCS,+,lamb" group (23/24) VCS induced a complete acceptance of the unfamiliar lamb without any disruption of the bond previously formed with the familiar lamb. VCS or 2,hr of separation did not disrupt the maintenance of the selective bond initially formed with the familiar lamb since all the ewes of the "VCS no lamb" and "no VCS" groups accepted it at suckling. © 2010 Wiley Periodicals, Inc. Dev Psychobiol 52: 537,544, 2010. [source] Maternal care affects the development of maternal behavior in inbred miceDEVELOPMENTAL PSYCHOBIOLOGY, Issue 4 2009Hirotaka Shoji Abstract The present study investigated the effects of variations in maternal behavior on the development of maternal behavior of female offspring in BALB/c and CBA/Ca inbred mice. In Experiment 1, we conducted fostering within or between the two strains and observed the maternal behaviors of mothers and female offspring for 2 weeks postpartum. Although fostering changed the maternal behavior of mothers in both strains, CBA mothers generally showed greater frequency of nursing posture and pup licking than BALB mothers. BALB female offspring reared by CBA mothers showed more body licking than those reared by BALB mothers, whereas fostering did not affect the maternal behavior of CBA female offspring. In Experiment 2, we examined the maternal behavior of females of F1 hybrids derived from reciprocal crosses between the two strains to confirm the maternal effect demonstrated in Experiment 1. Female F1 hybrids from CBA mothers showed more arched-back nursing, body licking, and nest building than those from BALB mothers. These results suggested that maternal care affect the development of maternal behavior in inbred mice, though the contributions of genetic and prenatal factors cannot be ignored. © 2009 Wiley Periodicals, Inc. Dev. Psychobiol 51: 345,357, 2009. [source] Olfactory learning in the rat neonate soon after birthDEVELOPMENTAL PSYCHOBIOLOGY, Issue 6 2008Stacie S. Miller Abstract The first hours of a newborn rat's life entail locating and attaching to the mother's nipple not only for nutrition but also for protection and warmth. The present study sought to characterize olfactory learning in the rat neonate immediately after birth. Newborn rats were exposed to an odor at various time periods soon after birth and tested for behavioral activation and attachment to a surrogate nipple in the presence of this odor at 4,5 hr postpartum. Regardless of when pups were presented the odor (0, 1, or 2 hr after birth) motor activity was greater among pups previously exposed to the odor than pups with no odor experience. Similarly, latency to attach to the nipple in the presence of the odor was lower among odor-preexposed pups, especially when odor exposure began within an hour of cesarean delivery. Odor exposure immediately after birth for just 15 min was sufficient to increase motor activity and to decrease latency to attach to a similarly scented surrogate nipple. These results suggest that olfactory experience very soon after birth can shape subsequent olfactory responses. The relative importance of the dearth of postnatal experience or of elevated neurochemicals immediately after birth and possible associative mechanisms underlying this learning is discussed. © 2008 Wiley Periodicals, Inc. Dev Psychobiol 50: 554,565, 2008. [source] Effects of neonatal novelty exposure on sexual behavior, fear, and stress-response in adult ratsDEVELOPMENTAL PSYCHOBIOLOGY, Issue 3 2007Fernando Benetti Abstract Environmental stimuli in early life may result in permanent behavioral and physiological changes. Present study evaluated the effects of exposing pups to a novel environment on behaviors (open-field test and sexual behavior) and prolactin stress-responses in adult male rats. Half of a litter was daily removed outside (OUT) from the nest and stimulated by handling for 3 min, while the other half remained inside (IN) the nest and was also handled for the same period during the first 10 days postpartum. Maternal behavior after all the pups were returned to the nest was not different between IN and OUT littermates. In adulthood, OUT males showed increased general and central locomotion activity in the open-field test, reduced sexual behavior, and attenuated prolactin secretion in response to restraint stress compared with the IN littermates. The repeated exposition of rat pups to a novel environment is a causal factor for the long-lasting behavioral and endocrine changes. The premature exposition of the pup to unfamiliar environments decreases fear and stress-response, and also reduces sexual behavior. We suggest that the absence of the odor of the mother may be crucial to explain the effects detected in adulthood. © 2007 Wiley Periodicals, Inc. Dev Psychobiol 49: 258,264, 2007. [source] Early recognition of newborn goat kids by their mother: II.DEVELOPMENTAL PSYCHOBIOLOGY, Issue 4 2003Auditory recognition, evidence of an individual acoustic signature in the neonate Abstract The vocal recognition of newborn kids by their mother at 2 days postpartum and the possible existence of interindividual differences in the voice structure of newborn kids were investigated in two separate studies. The ability of goats to discriminate between the bleats of their own versus an alien kid was tested at 2 days postpartum in mothers being prevented access to visual and olfactory cues from the young. Goats spent significantly more time on the side of the enclosure from which their own kid was bleating, looked in its direction for longer, and responded more frequently to the bleats of their own than to those of the alien kid (p,<,0.05). In the second study, the sonograms of 13 kids, studied from Days 1 to 5, showed significant interindividual differences for the five variables taken into account and on each of the 5 days (duration of bleat, fundamental frequency, peak frequency, and numbers of segments and of harmonics). The potential for individual coding ranged between 1.1 and 4.1, indicating that for some variables variations between individuals were greater than intraindividual variations. Furthermore, when considering the five parameters together, the discriminating scores showed an average of 95% in the 78 combinations of any 2 kids for any given day. Finally, some significant intraindividual differences also were found between days, suggesting ontogenic changes in the characteristics of the kid's voice in early life. Therefore, mother goats are likely to recognize the vocalizations of their 48-hr-old kids, as they show sufficient interindividual variability to allow the existence of individual vocal signatures, even though some of the characteristics of the bleats change rapidly over time. © 2003 Wiley Periodicals, Inc. Dev Psychobiol 43: 311,320, 2003. [source] Arousal, but not nursing, is necessary to elicit a decreased fear reaction toward humans in rabbit (Oryctolagus cuniculus) pupsDEVELOPMENTAL PSYCHOBIOLOGY, Issue 3 2003Péter Pongrácz Abstract Rabbits that are handled at the time of feeding during the first week postpartum show reduced fear of humans later in their lives as compared to unhandled controls. Effective handling has been shown to be confined to a sensitive period. Our study aimed to investigate if feeding itself (provided by a second doe, 6 hr after the standard nursing time) affects the levels of fear of humans later in life. Our results showed that (a) the prenursing state of excitement is only characteristic of the standard nursing and is not elicited by a second feeding 6 hr past the usual nursing time, repeated daily across the first week postpartum; and (b) handling linked to a second feeding 6 hr after the standard nursing does not reduce fear responses toward humans at weaning. We conclude that the aroused state, per se, is essential for the reduction of a rabbit's fear response toward humans provoked by early handling. © 2003 Wiley Periodicals, Inc. Dev Psychobiol 43: 192,199, 2003. [source] Bipolar disorder in women: reproductive events and treatment considerationsACTA PSYCHIATRICA SCANDINAVICA, Issue 2 2005M. P. Freeman Objective:, Bipolar disorders are prevalent in women. Women with bipolar disorder often present with different clinical features than men. Reproductive events and hormonal treatments may impact the course of bipolar disorder. Our main objectives are to i) assess the impact of reproductive events on the course of the disorder, and ii) to discuss the relationships between reproductive events and psychiatric treatments. Method:, A literature search was conducted of MEDLINE journals from 1965 to present. Manual literature searches were also conducted. We review the presentation, clinical course, and treatment considerations of bipolar disorder in women, with emphasis on treatment considerations in the context of reproductive events. Treatment-related issues such as teratogenicity, breastfeeding, polycystic ovarian syndrome, weight gain and obesity, and medication interactions with oral contraceptives are reviewed. Results:, Women with bipolar disorder may be more vulnerable to mood episodes in the context of reproductive events, particularly postpartum. In women of reproductive age, mood stabilizers must be selected with teratogenic risks in mind, with the highest reported risks in pregnancy with valproate, and the greatest concern during breastfeeding with lithium use. In the areas of the perimenopause and polycycstic ovarian syndrome, more data are needed to advise treatment decisions. Conclusion:, We urgently need further study in these areas to deliver care that is appropriate to women with bipolar disorder. [source] Fasting plasma glucose values alone miss most abnormalities of glucose tolerance in the postpartumDIABETIC MEDICINE, Issue 6 2004A. McElduff No abstract is available for this article. [source] Are commonly used self-report inventories suitable for screening postpartum depression and anxiety disorders?ACTA PSYCHIATRICA SCANDINAVICA, Issue 1 2000M. Muzik Objective: The utility of several self-report symptom inventories were examined for detecting postpartum depression (MDD) and anxiety disorders (AD). Method: Fifty women (3 or 6 months postpartum), at heightened risk for MDD, completed several depression and anxiety symptom checklists. Psychiatric diagnoses were obtained via SCID interview. Results: Rates of MDD (n=9) and AD (n=9) were equivalent in this sample, with minimal diagnostic overlap. While all the self-report depression inventories screened accurately for MDD, none discriminated AD sensitively and reliably. Conclusion: The frequent occurrence of AD emphasizes the need to identify appropriate screening instruments for postpartum anxiety disorders. [source] Echocardiographic Study of Cardiac Morphological and Functional Changes before and after Parturition in Pregnancy-Induced HypertensionECHOCARDIOGRAPHY, Issue 3 2006Lijun Yuan M.D. Purpose: To investigate the cardiac morphological and functional changes by echocardiography, before and after parturition in patients with pregnancy-induced hypertension (PIH). Methods: The parameters related to cardiac morphology and left ventricular diastolic and systolic functions were compared before and after parturition in 32 patients with PIH and 24 normal pregnant (NP) women. Results: Compared with NP women, the PIH patients had greater diameters of left atrium and left ventricle in end-diastole (LAd: 38.9 ± 4.5 vs 34.6 ± 4.4 mm, P = 0.0015; LVEDd: 51.2 ± 5.8 vs 47.1 ± 4.2 mm, P = 0.036) and lower E/A (1.2 ± 0.2 vs 1.4 ± 0.2, P = 0.009) and greater fractional shortening (FS) (39.8 ± 6.5% vs 37.1 ± 6.9%, P = 0.042) and ejection fraction (EF) (0.72 ± 0.07 vs 0.66 ± 0.08, P = 0.040). Pericardial effusion (PE) occurred in 31.3% and 16.7% of PIH and NP, respectively. The LAd and LVEDd in 70% and 47% patients with PIH resolved and PE disappeared in 80% of PIH patients postpartum. E/A ratio in PIH significantly increased after parturition, while the two patients with cardiac systolic dysfunction did not improve very much. Conclusions: Compared with normal pregnancy, the most significant cardiac morphological changes in PIH are the greater diameters of left atrium and left ventricle, thicker inter-ventricular septum (IVS), more PE, impaired left ventricular diastolic function, and increased systolic function. The PE could disappear in PIH and about half of other abnormalities could recover to be the level of normal pregnancy postpartum within 2 months. [source] Evidence of a complex association between dose, pattern and timing of prenatal alcohol exposure and child behaviour problemsADDICTION, Issue 1 2010Colleen M. O'Leary ABSTRACT Background There is a lack of evidence regarding the effect of dose, pattern and timing of prenatal alcohol exposure and behaviour problems in children aged 2 years and older. Methods A 10% random sample of women delivering a live infant in Western Australia (1995,96) were invited to participate in an 8-year longitudinal survey (78% response rate n = 2224); 85% were followed-up at 2 years, 73% at 5 years and 61% at 8 years. Alcohol consumption was classified by combining the overall dose, dose per occasion and frequency to reflect realistic drinking patterns. Longitudinal analysis was conducted using generalized estimating equations (GEE) to investigate the association between child behaviour as measured by the Child Behaviour Checklist at 2, 5 and 8 years of age and prenatal alcohol exposure collected 3 months postpartum for each trimester separately, adjusting for a wide range of confounding factors. Results Low levels of prenatal alcohol were not associated with child behaviour problems. There were increased odds of internalizing behaviour problems following heavy alcohol exposure in the first trimester; anxiety/depression [adjusted odds ratio (aOR) 2.82; 95% confidence interval (CI) 1.07,7.43] and somatic complaints (aOR 2.74; 95% CI 1.47,5.12) and moderate levels of alcohol exposure increased the odds of anxiety/depression (aOR 2.24; 95% CI 1.16,4.34). Conclusions Prenatal alcohol exposure at moderate and higher levels increased the odds of child behaviour problems with the dose, pattern and timing of exposure affecting the type of behaviour problems expressed. Larger studies with more power are needed to confirm these findings. [source] Mutagenicity of zidovudine, lamivudine, and abacavir following in vitro exposure of human lymphoblastoid cells or in utero exposure of CD-1 mice to single agents or drug combinations,,ENVIRONMENTAL AND MOLECULAR MUTAGENESIS, Issue 3-4 2007Salina M. Torres Abstract Experiments were performed to investigate the impact of zidovudine (AZT), lamivudine (3TC), and abacavir (ABC) on cell survival and mutagenicity in two reporter genes, hypoxanthine-guanine phosphoribosyltransferase (HPRT) and thymidine kinase (TK), using cell cloning assays for assessing the effects of individual drugs/drug combinations in (1) TK6 human lymphoblastoid cells exposed in vitro and (2) splenic lymphocytes from male CD-1 mice exposed transplacentally on days 12,18 of gestation. In TK6 cells, dose-related increases in HPRT and TK mutant frequencies were found following 3 days of exposure to AZT or 3TC alone (33, 100, or 300 ,M), or to equimolar amounts of AZT-3TC. Compared with single drug exposures, AZT-3TC coexposures generally yielded enhanced elevations in HPRT and TK mutant frequencies. Mutagenicity experiments with ABC alone, or in combination with AZT-3TC, were complicated by the extreme cytotoxicity of ABC. Exposure of cells either to relatively high levels of AZT-3TC short-term (100 ,M, 3 days), or to peak plasma-equivalent levels of AZT-3TC for an extended period (10 ,M, 30 days), resulted in similar drug-induced mutagenic responses. Among sets of mice necropsied on days 13, 15, or 21 postpartum, Hprt mutant frequencies in T-cells were significantly elevated in the AZT-only (200 mg/kg bw/day) and AZT-3TC (200 mg AZT + 100 mg 3TC/kg bw/day) groups at 13 days of age. These results suggest that the mutagenicity by these nucleoside analogs is driven by cumulative dose, and raises the question of whether AZT-3TC has greater mutagenic effects than AZT alone in perinatally exposed children. Environ. Mol. Mutagen. © 2007 Wiley-Liss, Inc. [source] Genetic damage detected in CD-1 mouse pups exposed perinatally to 3,-azido-3,-deoxythymidine and dideoxyinosine via maternal dosing, nursing, and direct gavageENVIRONMENTAL AND MOLECULAR MUTAGENESIS, Issue 1 2004Jack B. Bishop Abstract Human immunodeficiency virus (HIV)-infected pregnant women are administered nucleoside-analogue antiretrovirals to reduce maternal-infant viral transmission. The current protocol recommends treating newborns for 6 additional weeks postpartum. The treatment is effective, but the risk of drug-induced chromosomal damage in neonates remains undefined. We used a mouse model to investigate this concern. In a multigeneration reproductive toxicity study, female CD-1 mice received 3,-azido-3,-deoxythymidine (AZT) and dideoxyinosine (ddI) (50/250, 75/375, 150/750 mg/kg/day AZT/ddI) by gavage twice daily in equal fractions beginning prior to mating and continuing throughout gestation and lactation. Direct pup dosing (same regimen) began on postnatal day (PND) 4. Peripheral blood erythrocytes of male pups were screened for micronuclei, markers of chromosomal damage, on PNDs 1, 4, 8, and 21. Extraordinary increases in micronucleated cells were noted in pups for each treatment group at each sampling time; treated dams exhibited smaller yet significant increases in micronucleated erythrocytes. The frequencies of micronucleated cells in untreated pups were higher than in the untreated dams, and all pups had markedly elevated levels of circulating reticulocytes compared to dams. These observations suggest that fetal and neonatal mouse hematopoietic precursor cells have heightened sensitivity to genotoxic agents, perhaps due to rapid cell proliferation during the perinatal period of development. The amount of genetic damage observed in treated pups raises concern for the potential of similar damage in humans. Investigations of chromosomal integrity in exposed newborns and children are recommended. Environ. Mol. Mutagen. 43:3,9, 2004. © 2004 Wiley-Liss, Inc. [source] Transplacental mutagenicity of N -ethyl- N -nitrosourea at the hprt locus in T-lymphocytes of exposed B6C3F1 miceENVIRONMENTAL AND MOLECULAR MUTAGENESIS, Issue 1 2001Hillary E. Sussman Abstract Previous studies have compared age-related differences in total mutagenic burden in mice of differing age (preweanling, weanling, or young adult) after single intraperitoneal (i.p.) injections of ethylnitrosourea (ENU). The purpose of the present investigation was to determine the effects of time elapsed since treatment on the frequency of hprt mutant T-cells (Mf) from mice treated transplacentally with single acute vs. multiple split doses of ENU. To this end, pregnant C57BL/6 mice (n = 13,16/group), which had been bred to C3H males, were given i.p. injections of 40 mg ENU/kg bw in a single dose on day 18 of gestation, in a split dose of 6 mg ENU/kg bw on days 12 through 18 of gestation, or DMSO vehicle alone. Groups of pups were necropsied on days 10, 13, 15 (single dose only), 17, 20, 40, and 70 postpartum for T-cell isolations and hprt Mf measurements using the T-cell cloning assay. The time required to reach maximum Mfs in T-cells isolated from thymus of transplacentally treated animals was 2 weeks, the same time span as previously observed after ENU treatment of adult, weanling, and preweanling mice. Mfs in T-cells isolated from spleens of control animals averaged 2.1 ± 0.3 (SE) × 10,6. In spleens of mice treated transplacentally with ENU in a single dose, Mfs reached a maximum at 15 days postpartum [84.7 ± 15.8 (SE) × 10,6] and decreased to lower but still elevated levels at 40 days postpartum. In spleens of mice treated transplacentally with ENU in a split dose, Mfs reached a maximum at 13 days postpartum [74.0 ± 16.3 (SE) × 10,6] and decreased to background levels at 40 days postpartum. The areas under the curves describing the change in hprt Mfs over time for ENU-treated vs. control mice estimate the mutagenic potency for transplacental single- and split-dose exposures to be 1.9 and 0.8 × 103, respectively. Comparison of the mutagenic potency estimates for mice exposed to ENU in utero to 4-week-old mice given a similar dose of the same lot number of ENU indicates that the mouse is more susceptible to ENU-induced mutagenesis during fetal life. Environ. Mol. Mutagen. 38:30,37, 2001 © 2001 Wiley-Liss, Inc. [source] Pharmacokinetics of Gabapentin during Delivery, in the Neonatal Period, and Lactation: Does a Fetal Accumulation Occur during Pregnancy?EPILEPSIA, Issue 10 2005Inger Öhman Summary:,Purpose: To study the pharmacokinetics of gabapentin (GBP) during delivery, lactation, and in the neonatal period. Methods: GBP concentrations in plasma and breast milk were determined with high-performance liquid chromatography in samples from six women treated with GBP and in their offspring. Blood samples were obtained at delivery from mothers, from the umbilical cord, and from the newborns on three occasions during 2 days after delivery. GBP concentration also was determined in breast milk and in blood collected from five of the mothers and suckling infants 2 weeks to 3 months after birth. Results: The umbilical cord/maternal plasma concentration ratios ranged from 1.3 to 2.1 (mean, 1.7). GBP plasma concentrations in the neonates declined with an estimated half-life of 14 h. Mean GBP plasma concentrations in the infants were 27% of the cord plasma levels (range, 12,36%) 24 h postpartum. The mean milk/maternal plasma concentration ratio was 1.0 (range, 0.7,1.3) from 2 weeks to 3 months. The infant dose of GBP was estimated to 0.2,1.3 mg/kg/day, equivalent to 1.3,3.8% of the weight-normalized dose received by the mother. The plasma concentrations in the breast-fed infants were ,12% of the mother's plasma levels, but no adverse effects were observed. Conclusions: Our limited observations suggest an active transplacental transport of GBP, with accumulation in the fetus as a consequence. We suggest that this could be by the specific L-type amino acid transporter 1 (LAT-1), which is expressed in the placenta. Newborns seem to have a slightly lower capacity to eliminate GBP than do adults. Transfer of GBP to breast milk is extensive, but plasma concentrations appear to be low in suckling infants. No adverse effects were observed in the newborn. Although more data are needed, our observations suggest that breastfeeding in conjunction with GBP treatment is safe. [source] Lamotrigine in Pregnancy: Pharmacokinetics During Delivery, in the Neonate, and During LactationEPILEPSIA, Issue 6 2000Inger Ohman Summary: Purpose: To investigate the pharmacokinetics of lamotrigine (LTG) during delivery, during the neonatal period, and lactation. Methods: High-performance liquid chromatography was used to determine plasma and milk levels of LTG in nine pregnant women with epilepsy treated with LTG, and plasma levels in their 10 infants. Samples were obtained at delivery, the first 3 days postpartum, and at breast-feeding 2,3 weeks after delivery. Results: At delivery, maternal plasma LTG concentrations were similar to those from the umbilical cord, indicating extensive placental transfer of LTG. There was a slow decline in the LTG plasma concentration in the newborn. At 72 h postpartum, median LTG plasma levels in the infants were 75% of the cord plasma levels (range, 50,100%). The median milk/maternal plasma concentration ratio was 0.61 (range, 0.47,0.77) 2,3 weeks after delivery, and the nursed infants maintained LTG plasma concentrations of ,30% (median, range 23,50%) of the mother's plasma levels. Maternal plasma LTG concentrations increased significantly during the first 2 weeks after parturition, the median increase in plasma concentration/dose ratio being 170%. Conclusions: Our data demonstrate a marked change in maternal LTG kinetics after delivery, possibly reflecting a normalization of an induced metabolism of LTG during pregnancy. LTG is excreted in considerable amounts in breast milk (the dose to the infant can be estimated to 0.2,1 mg/kg/day 2,3 weeks postpartum), which in combination with a slow elimination in the infants, may result in LTG plasma concentrations comparable to what is reported during active LTG therapy. No adverse effects were observed in the infants, however. [source] Does stage-based smoking cessation advice in pregnancy result in long-term quitters?ADDICTION, Issue 1 200518-month postpartum follow-up of a randomized controlled trial ABSTRACT Aims To evaluate the effect on quitting smoking at 18 months postpartum of smoking cessation interventions based on the Transtheoretical Model (TTM) delivered in pregnancy compared to current standard care. It has been claimed that TTM-based interventions will continue to create quitters after the end of the intervention period. Design Cluster randomized trial. Setting Antenatal clinics in general practices in the West Midlands, UK. Participants A total of 918 pregnant smokers originally enrolled in the trial, of which 393 women were followed-up at 18 months postpartum. Interventions One hundred general practices were randomized into the three trial arms. Midwives in these practices delivered three interventions: A (standard care), B (TTM-based self-help manuals) and C (TTM-based self-help manuals plus sessions with an interactive computer program giving individualized smoking cessation advice). Measurements Self-reported continuous and point prevalence abstinence since pregnancy. Findings When combined together, there was a slight and not significant benefit for both TTM arms compared to the control, with an odds ratio (OR) 95% confidence interval (CI) of 1.20 (0.29,4.88) for continuous abstinence. For point prevalence abstinence, the OR (95%CI) was 1.15 (0.66,2.03). Seven of the 54 (13%) women who had quit at the end of pregnancy were still quit 18 months later, and there was no evidence that the TTM-based interventions were superior in preventing relapse. Conclusions The TTM-based interventions may have shown some evidence of a short-term benefit for quitting in pregnancy but no benefit relative to standard care when followed-up in the longer-term. [source] Pregnancy-induced sympathetic overactivity: a precursor of preeclampsia,EUROPEAN JOURNAL OF CLINICAL INVESTIGATION, Issue 6 2004T. Fischer Abstract Background, Preeclampsia has been shown to constitute a state of sympathetic overactivity. However, it remains unclear if the sympathetic activity precedes preeclampsia or represents only a secondary phenomenon. To further investigate this issue, we performed a prospective study in pregnant women considered to be at increased risk for preeclampsia owing to preeclampsia during a preceding pregnancy. Materials and methods, Twenty-two women with a history of preeclampsia were longitudinally studied on three occasions: twice during pregnancy (M1: 22 ± 4, M2: 33 ± 5 weeks) and once postpartum (M3: 26 ± 6 weeks postpartum). We measured muscle sympathetic nerve activity (MSNA), forearm blood flow, and blood pressure at rest and during reactive hyperaemia after forearm occlusion. Results, At M1 and M2, none of the subjects was hypertensive, however, muscle sympathetic nerve activity levels were significantly augmented, compared with their postpartum values (M1: 21 ± 9, M2: 29 ± 14, M3: 9 ± 5 bursts min,1; P < 0·05). Forearm vascular resistance did not significantly change from M1 through M3 (M1: 16 ± 9, M2: 15 ± 7, M3: 16 ± 7 U; P = NS). Gestational muscle sympathetic nerve activity values did not differ significantly among the subjects with subsequent preeclampsia compared with those who remained normotensive [with preeclampsia (n = 6): M1: 21 ± 5, M2: 27 ± 6, M3: 7 ± 4 bursts min,1; without preeclampsia (n = 16): M1: 21 ± 11, M2: 30 ± 16, M3: 9 ± 6 bursts min,1; P = NS]. Conclusion, Invariably, all women at risk for preeclampisa showed a pregnancy-induced increase in MSNA (pregnancy-induced sympathetic overactivity, PISO), which normalized after delivery. Most importantly, PISO is not necessarily associated with peripheral vasoconstriction and hypertension. Furthermore, only a subset of patients developed preeclampsia later on. Therefore, we hypothesize that PISO constitutes a precursor of preeclampsia which is physiologically compensated for by vasodilating mechanisms, leading to preeclampsia only when they fail. [source] | |||||||||||||||||||||||||||||||||||||||||||