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https://www.readbyqxmd.com/read/29352661/mechanistic-insights-into-the-genetics-of-affective-psychosis-from-prader-willi-syndrome
#1
REVIEW
Lucie C S Aman, Katherine E Manning, Joyce E Whittington, Anthony J Holland
Schizophrenia and bipolar disorder are common, severe, and disabling psychotic disorders, which are difficult to research. We argue that the genetically determined neurodevelopmental disorder Prader-Willi syndrome (PWS), which is associated with a high risk of affective psychotic illness, can provide a window into genetic mechanisms and associated neural pathways. People with PWS can all show non-psychotic psychopathology and problem behaviours, but the prevalence of psychotic illness differs markedly by genetic subtype; people with PWS due to chromosome 15 maternal uniparental disomy have higher prevalence of psychotic illness compared with patients with PWS due to 15q11-13 deletions of paternal origin...
January 15, 2018: Lancet Psychiatry
https://www.readbyqxmd.com/read/29352601/regulating-needs-exploring-the-role-of-insulin-like-growth-factor-2-signalling-in-materno-fetal-resource-allocation
#2
Amanda Nancy Sferruzzi-Perri
During pregnancy, the fetus requires nutrients supplied by the mother to grow and develop. However, the mother also requires sufficient resources to support the pregnancy, as well as, to maintain her health. Failure to regulate resource allocation between the mother and fetus can lead to pregnancy complications with immediate and life-long consequences for maternal and offspring health. This review explores the role of insulin-like growth factor (IGF)-2 in regulating materno-fetal resource allocation, particularly via its regulation of placental development and function...
January 11, 2018: Placenta
https://www.readbyqxmd.com/read/29352600/placental-control-of-metabolic-adaptations-in-the-mother-for-an-optimal-pregnancy-outcome-what-goes-wrong-in-gestational-diabetes
#3
David J Hill
As pregnancy progresses the placental syncytiotrophoblast increasingly assumes control of maternal glucose homeostasis through the release and counter-balancing effects of placental lactogen (PL) and placental variant growth hormone (GH-V). While local actions of these hormones on placental growth and function are likely to exist, each also exerts indirect actions to ensure fetal nutritional availability through modulation of the maternal insulin/insulin-like growth factor axis. Peripheral insulin resistance results from the increasing levels of GH-V in the maternal circulation and is counter-balanced by an increase in insulin availability through an expansion of maternal pancreatic β-cell mass...
January 9, 2018: Placenta
https://www.readbyqxmd.com/read/29352493/effect-of-dietary-manipulation-and-vaccination-of-turkey-breeder-hens-on-immunoglobulin-levels-of-yolk-yolk-sac-and-neonate-poults
#4
A Bhattacharyya, S Majumdar, S K Bhanja, A B Mandal, B B Dash
Two hundred turkey breeder hens and 24 viable toms of 30-35 weeks age of small white variety were distributed into two treatment groups having four replicates of 25 hens and three toms in each treatment. First four replicates were offered a turkey breeder diet (Diet A) (Nutrient requirements of poultry, 1994, National Academic Press, Washington, DC) and the rest four replicates were maintained on a higher plane of nutrition (Diet B) for 8-week duration. After 6 weeks of experimental feeding, two replicates from each treatment groups were vaccinated with ND (R2 B) vaccine...
January 19, 2018: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/29352467/systematic-misclassification-of-gestational-age-by-ultrasound-biometry-implications-for-clinical-practice-and-research-methodology-in-the-nordic-countries
#5
Alkistis Skalkidou, Merit Kullinger, Marios K Georgakis, Helle Kieler, Ulrik S Kesmodel
Historically, pregnancy dating has been based on self-reported information on first day of the last menstrual period. In the 1970s, ultrasound biometry was introduced as an alternative for pregnancy dating, and is now the leading method in Nordic countries. The use of ultrasound led to a reduction of postterm births and fewer inductions and is considered more precise than last menstrual period-based methods for pregnancy dating. Nevertheless, differences in early growth and specific situations, such as maternal obesity, can render its estimates less precise, leading to gestational age misclassification...
January 20, 2018: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/29352362/a-preliminary-examination-of-the-link-between-maternal-experiential-avoidance-and-parental-accommodation-in-anxious-and-non-anxious-children
#6
Leah Feinberg, Caroline Kerns, Donna B Pincus, Jonathan S Comer
Studies point to parental experiential avoidance (EA) as a potential correlate of maladaptive parenting behaviors associated with child anxiety. However, research has not examined the relationship between EA and parental accommodation of child anxiety, nor the extent to which parental negative beliefs about child anxiety help explain such a relationship. In a sample of mothers (N = 45) of anxious and non-anxious children, the present study investigated the potential link between maternal EA and accommodation of child anxiety and whether this link may be indirectly accounted for via maternal negative beliefs about child anxiety...
January 19, 2018: Child Psychiatry and Human Development
https://www.readbyqxmd.com/read/29352147/pre-conception-maternal-erythrocyte-saturated-to-unsaturated-fatty-acid-ratio-predicts-pregnancy-after-natural-cycle-frozen-embryo-transfer
#7
Christopher C Onyiaodike, Heather M Murray, Ruiqi Zhang, Barbara J Meyer, Fiona Jordan, E Ann Brown, Robert J B Nibbs, Helen Lyall, Naveed Sattar, Scott M Nelson, Dilys J Freeman
The environment for embryo implantation and fetal growth and development is affected by maternal nutritional, metabolic and health status. The aim of this prospective, cohort study was to test whether plasma metabolic and inflammatory biomarkers can predict pregnancy resulting from in vitro fertilisation (IVF). Women with a natural menstrual cycle undergoing frozen embryo transfer (FET) were recruited and fasting baseline blood samples were collected a mean of 3.4 days prior to the luteinising hormone (LH) surge and a non-fasting blood sample was taken on the day of FET...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352068/maternal-fetal-disposition-and-metabolism-of-retrorsine-in-pregnant-rats
#8
Xia Li, Xiaojing Yang, E Xiang, Jinyuan Luo, Shuaikai Qiu, Yan Fang, Li Zhang, Yu Guo, Jiang Zheng, Hui Wang
Pyrrolizidine alkaloids (PAs) are extensively synthesized by plants and are commonly present in herbs and foodstuffs, which exhibit hepatotoxicity requiring metabolic activation by cytochrome P450 (CYP) 3A to form the electrophilic metabolites-pyrrolic ester. PAs also cause embryo toxicity, but the metabolic profiles of PAs in fetus and placenta have been far from clear. In this study, we determined the basal metabolic activation of retrorsine (RTS) in rat maternal liver, placenta and fetal liver in vitro, and examined the fetal toxicity and bioactivation of RTS in vivo...
January 19, 2018: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/29351865/interventions-to-support-effective-communication-between-maternity-care-staff-and-women-in-labour-a-mixed-methods-systematic-review
#9
Yan-Shing Chang, Kirstie Coxon, Anayda Gerarda Portela, Marie Furuta, Debra Bick
OBJECTIVES: the objectives of this review were (1) to assess whether interventions to support effective communication between maternity care staff and healthy women in labour with a term pregnancy could improve birth outcomes and experiences of care; and (2) to synthesize information related to the feasibility of implementation and resources required. DESIGN: a mixed-methods systematic review. SETTING AND PARTICIPANTS: studies which reported on interventions aimed at improving communication between maternity care staff and healthy women during normal labour and birth, with no apparent medical or obstetric complications, and their family members were included...
December 27, 2017: Midwifery
https://www.readbyqxmd.com/read/29351786/factors-associated-with-intended-use-of-a-maternity-waiting-home-in-southern-ethiopia-a-community-based-cross-sectional-study
#10
Tienke Vermeiden, Floris Braat, Girmay Medhin, Asheber Gaym, Thomas van den Akker, Jelle Stekelenburg
BACKGROUND: Although Ethiopia is scaling up Maternity Waiting Homes (MWHs) to reduce maternal and perinatal mortality, women's use of MWHs varies markedly between facilities. To maximize MWH utilization, it is essential that policymakers are aware of supportive and inhibitory factors. This study had the objective to describe factors and perceived barriers associated with potential utilization of an MWH among recently delivered and pregnant women in Southern Ethiopia. METHODS: A community-based cross-sectional study was conducted between March and November 2014 among 428 recently delivered and pregnant women in the Eastern Gurage Zone, Southern Ethiopia, where an MWH was established for high-risk pregnant women to await onset of labour...
January 19, 2018: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29351782/stakeholders-perspectives-on-facilitators-of-and-barriers-to-the-utilisation-of-and-access-to-maternal-health-services-in-eritrea-a-qualitative-study
#11
Chol Chol, Cynthia Hunter, Berhane Debru, Berhana Haile, Joel Negin, Robert G Cumming
BACKGROUND: Wars affect maternal health services by destroying health systems. Eritrea experienced two wars with neighbouring Ethiopia. Despite this, the maternal mortality ratio (MMR) in Eritrea fell by 69% from 1590 per 100,000 live births in 1990 to 501 in 2015. This study aimed to examine facilitators of and barriers to the utilisation of and access to maternal health services in Eritrea. METHODS: Using in-depth interviews and field observations for data collection, this qualitative study was conducted in five healthcare facilities in Asmara, the capital of Eritrea, in February and March 2016...
January 19, 2018: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29351778/a-qualitative-analysis-of-men-s-involvement-in-maternal-and-child-health-as-a-policy-intervention-in-rural-central-malawi
#12
Elizabeth Mkandawire, Sheryl L Hendriks
BACKGROUND: Men's involvement in maternal and child health presents an opportunity for the advancement of maternal and child nutrition as men often play a key role in decision-making particularly regarding women's reproductive health. While most research on men's involvement in maternal and child health has focused on men's participation in antenatal care, this study focuses specifically on men's involvement in maternal and child nutrition. The purpose of the study is to explore how men's involvement is conceptualised in rural Central Malawi, highlighting the key factors influencing men's involvement in maternal and child health...
January 19, 2018: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29351750/associations-of-land-cattle-and-food-security-with-infant-feeding-practices-among-a-rural-population-living-in-manyara-tanzania
#13
Bailey Hanselman, Ramya Ambikapathi, Estomih Mduma, Erling Svensen, Laura E Caulfield, Crystal L Patil
BACKGROUND: Livelihoods strategies and food security experiences can positively and negatively affect infant and young child feeding (IYCF) practices. This study contributes to this literature by exploring how variation in household economics among rural farmers in Tanzania relates to IYCF patterns over the first 8 months of an infant's life. METHODS: These data were produced from a longitudinal study in which a cohort of mother-infant dyads was followed from birth to 24 months...
January 19, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29351639/call-to-action-prevention-of-mother-to-child-transmission-of-hepatitis-b-in-africa
#14
Peyton Wilson, Jonathan B Parr, Ravi Jhaveri, Steve R Meshnick
Hepatitis B virus (HBV) is a significant public health issue that has not been adequately addressed, especially in the high-prevalence region of Africa. Despite the incorporation of HBV vaccines into the Expanded Program on Immunization (EPI), children continue to be infected with HBV through maternal-to-child transmission (MTCT). The addition of a birth dose of HBV vaccine would be a cost-effective method to reduce MTCT. Birth-dose HBV vaccine policies have been adopted in the Western Pacific region but have yet to be implemented in the African region...
January 17, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29351633/evolutionary-genetics-of-cytoplasmic-incompatibility-genes-cifa-and-cifb-in-prophage-wo-of-wolbachia
#15
Amelia R I Lindsey, Danny W Rice, Sarah R Bordenstein, Andrew W Brooks, Seth R Bordenstein, Irene L G Newton
The bacterial endosymbiont Wolbachia manipulates arthropod reproduction to facilitate its maternal spread through host populations. The most common manipulation is cytoplasmic incompatibility (CI): Wolbachia-infected males produce modified sperm that cause embryonic mortality, unless rescued by embryos harboring the same Wolbachia. The genes underlying CI, cifA and cifB, were recently identified in the eukaryotic association module of Wolbachia's prophage WO. Here, we use transcriptomic and genomic approaches to address three important evolutionary facets of the cif genes...
January 17, 2018: Genome Biology and Evolution
https://www.readbyqxmd.com/read/29351604/evaluation-of-results-based-financing-in-the-republic-of-the-congo-a-comparison-group-pre-post-study
#16
Wu Zeng, Donald S Shepard, Jean de Dieu Rusatira, Aaron P Blaakman, Bernice M Nsitou
Results-based financing (RBF) has been advocated and increasingly scaled up in low- and middle-income countries to increase utilization and quality of key primary care services, thereby reducing maternal and child mortality rates. This pilot RBF study in the Republic of the Congo from 2012 to 2014 used a quasi-experimental research design. The authors conducted pre- and post-household surveys and gathered health facility services data from both intervention and comparison groups. Using a difference-in-differences approach, the study evaluated the impact of RBF on maternal and child health services...
January 16, 2018: Health Policy and Planning
https://www.readbyqxmd.com/read/29351580/maternal-nutrient-restriction-impairs-young-adult-offspring-ovarian-signaling-resulting-in-reproductive-dysfunction-and-follicle-loss
#17
K A Chan, P A Jazwiec, W Gohir, J J Petrik, D M Sloboda
Reproductive abnormalities are included as health complications in offspring exposed to poor prenatal nutrition. We have previously shown in a rodent model, that offspring born to nutrient restriction during pregnancy are born small, enter puberty early, and display characteristics of early ovarian aging as adults. The present study investigated whether key proteins involved in follicle recruitment and growth mediate ovarian follicle loss. Pregnant rats were randomized to: a standard diet throughout pregnancy and lactation (CON), or a calorie-restricted (50% of control) diet (UN) during pregnancy...
January 17, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29351561/preconception-use-of-cart-by-hiv-positive-pregnant-women-increases-the-risk-of-infants-being-born-small-for-gestational-age
#18
Ingrid J M Snijdewind, Colette Smit, Mieke H Godfried, Rachel Bakker, Jeannine F J B Nellen, Vincent W V Jaddoe, Elisabeth van Leeuwen, Peter Reiss, Eric A P Steegers, Marchina E van der Ende
BACKGROUND: The benefits of combination anti-retroviral therapy (cART) in HIV-positive pregnant women (improved maternal health and prevention of mother to child transmission [pMTCT]) currently outweigh the adverse effects due to cART. As the variety of cART increases, however, the question arises as to which type of cART is safest for pregnant women and women of childbearing age. We studied the effect of timing and exposure to different classes of cART on adverse birth outcomes in a large HIV cohort in the Netherlands...
2018: PloS One
https://www.readbyqxmd.com/read/29351483/prenatal-exposure-to-diesel-exhaust-pm2-5-causes-offspring-%C3%AE-cell-dysfunction-in-adulthood
#19
Minjie Chen, Shuai Liang, Xiaobo Qin, Li Zhang, Lianglin Qiu, Sufang Chen, Ziying Hu, Yanyi Xu, Wanjun Wang, Yuhao Zhang, Qi Cao, Zhekang Ying
BACKGROUND: Environmental stressors that encounter in early-life and cause abnormal fetal and/or neonatal development may increase susceptibility to non-communicable diseases such as diabetes. Maternal exposure to ambient fine particulate matter (PM2.5) is associated with various fetal abnormalities, suggesting that it may program offspring's susceptibility to diabetes. In the present study, we therefore examined whether maternal exposure to diesel exhaust PM2.5 (DEP), one of the major sources of ambient PM2...
December 26, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29351419/maternal-nutrient-restriction-in-guinea-pigs-as-an-animal-model-for-studying-growth-restricted-offspring-with-post-natal-catch-up-growth
#20
Catherine L Nevin, Evan Formosa, Yohei Maki, Brad Matushewski, Timothy R H Regnault, Bryan S Richardson
We determined the impact of moderate maternal nutrient restriction (MNR) in guinea pigs with fetal growth restriction (FGR) on offspring body and organ weights, hypothesizing that FGR-MNR animals will show catch-up growth, but with organ-specific differences. Guinea pig sows were fed ad libitum (Control) or 70% of the control diet from 4 week`s pre-conception, switching to 90% at mid-pregnancy (MNR). Control newborns >95g (appropriate for gestational age or AGA, N=37) and MNR newborns <85g (FGR, N=37) were monitored until neonatal (~25 days) or adult (~110 days) necropsy...
January 10, 2018: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
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