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https://www.readbyqxmd.com/read/28334496/seasonality-at-the-clinical-onset-of-type-1-diabetes-lessons-from-the-sweet-database
#1
A Gerasimidi Vazeou, O Kordonouri, M Witsch, J M Hermann, G Forsander, C de Beaufort, H J Veeze, C Maffeis, V Cherubini, O Cinek, B Piccini, R W Holl, T Danne
BACKGROUND: Seasonality at the clinical onset of type 1 diabetes (T1D) has been suggested by different studies, however, the results are conflicting. This study aimed to evaluate the presence of seasonality at clinical onset of T1D based on the SWEET database comprising data from 32 different countries. METHODS: The study cohort included 23 603 patients (52% males) recorded in the international multicenter SWEET database (48 centers), with T1D onset ≤20 years, year of onset between 1980 and 2015, gender, year and month of birth and T1D-diagnosis documented...
October 2016: Pediatric Diabetes
https://www.readbyqxmd.com/read/28333764/determinants-of-rotavirus-transmission-a-lag-non-linear-time-series-analysis
#2
Rolina D van Gaalen, Jan van de Kassteele, Susan J M Hahné, Patricia Bruijning-Verhagen, Jacco Wallinga
Rotavirus is a common viral infection among young children. As in many countries, the infection dynamics of rotavirus in the Netherlands are characterized by an annual winter peak, which was notably low in 2014. Previous work suggested an association between weather factors and both rotavirus transmission and incidence. From epidemic theory, we know that the proportion of susceptible individuals can affect disease transmission. We investigated how these factors are associated with rotavirus transmission in the Netherlands, and their impact on rotavirus transmission in 2014...
March 22, 2017: Epidemiology
https://www.readbyqxmd.com/read/28317246/brain-gene-expression-is-influenced-by-incubation-temperature-during-leopard-gecko-eublepharis-macularius-development
#3
Maria Michela Pallotta, Mimmo Turano, Raffaele Ronca, Marcello Mezzasalma, Agnese Petraccioli, Gaetano Odierna, Teresa Capriglione
Sexual differentiation (SD) during development results in anatomical, metabolic, and physiological differences that involve not only the gonads, but also a variety of other biological structures, such as the brain, determining differences in morphology, behavior, and response in the breeding season. In many reptiles, whose sex is determined by egg incubation temperature, such as the leopard gecko, Eublepharis macularius, embryos incubated at different temperatures clearly differ in the volume of brain nuclei that modulate behavior...
March 20, 2017: Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution
https://www.readbyqxmd.com/read/28316913/a-review-of-seasonality-of-cleft-births-the-brazil-experience
#4
Sibele Nascimento de Aquino, Renato Assis Machado, Lívia Máris R Paranaíba, Daniella Reis B Martelli, Daniela Araújo Veloso Popoff, Mário Sérgio O Swerts, Hercílio Martelli-Júnior
AIMS: Evaluate the seasonal influence in nonsyndromic cleft lip and/or palate (NSCL/P) in Brazilian patients. METHODS: A case-control study, with 361 unrelated patients with NSCL/P and 481 healthy individuals, was done on a reference service for craniofacial deformities in Minas Gerais State, Brazil. Information was collected from clinical records considering gender, month of birth, as well as with the seasons. RESULTS: Nonparametric tests did not show a seasonal variation in month of birth and in seasons of year of NSCL/P compared to a control group (p = 0...
January 2017: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/28303945/dependence-of-nighttime-sleep-duration-in-one-month-old-infants-on-alterations-in-natural-and-artificial-photoperiod
#5
Sachiko Iwata, Fumie Fujita, Masahiro Kinoshita, Mitsuaki Unno, Takashi Horinouchi, Seiichi Morokuma, Osuke Iwata
Human sleep-wake cycles are entrained by both natural and artificial light-dark cycles. However, little is known regarding when and how the photoperiod changes entrain the biological clock after conception. To investigate the dependence of sleep patterns in young infants on the natural and artificial light-dark cycles, 1,302 pairs of one-month-old infants and their mothers were asked to answer a questionnaire. Birth in spring, longer daytime sleep duration, early/regular light-off times, and longer maternal nighttime sleep duration were identified as independent variables for longer infant nighttime sleep duration in both univariate and multivariate analyses...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28292961/modeling-month-season-of-birth-as-a-risk-factor-in-mouse-models-of-chronic-disease-from-multiple-sclerosis-to-autoimmune-encephalomyelitis
#6
Jacob D Reynolds, Laure K Case, Dimitry N Krementsov, Abbas Raza, Rose Bartiss, Cory Teuscher
Month-season of birth (M-SOB) is a risk factor in multiple chronic diseases, including multiple sclerosis (MS), where the lowest and greatest risk of developing MS coincide with the lowest and highest birth rates, respectively. To determine whether M-SOB effects in such chronic diseases as MS can be experimentally modeled, we examined the effect of M-SOB on susceptibility of C57BL/6J mice to experimental autoimmune encephalomyelitis (EAE). As in MS, mice that were born during the M-SOB with the lowest birth rate were less susceptible to EAE than mice born during the M-SOB with the highest birth rate...
March 14, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28284691/relationships-between-early-life-growth-intake-and-birth-season-with-first-lactation-performance-of-holstein-dairy-cows
#7
H Chester-Jones, B J Heins, D Ziegler, D Schimek, S Schuling, B Ziegler, M B de Ondarza, C J Sniffen, N Broadwater
The objective was to determine the relationships between early-life parameters [including average daily gain (ADG), body weight (BW), milk replacer intake, starter intake, and birth season] and the first-lactation performance of Holstein cows. We collected data from birth years 2004 to 2012 for 2,880 Holstein animals. Calves were received from 3 commercial dairy farms and enrolled in 37 different calf research trials at the University of Minnesota Southern Research and Outreach Center from 3 to 195 d. Upon trial completion, calves were returned to their respective farms...
March 8, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28284544/temperature-exposure-during-pregnancy-and-birth-outcomes-an-updated-systematic-review-of-epidemiological-evidence
#8
REVIEW
Yunquan Zhang, Chuanhua Yu, Lu Wang
Seasonal patterns of birth outcomes have been observed worldwide, and there was increasing evidence that ambient temperature played as a trigger of adverse birth outcomes, such as preterm birth (PTB), low birth weight (LBW), and stillbirth. To systematically review updated epidemiological evidence about the relationship between temperature exposure during pregnancy and PTB, LBW, and stillbirth, we searched for related studies published in English from electronic databases and references of identified papers...
March 8, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28268073/vaccinations-in-early-life-are-not-associated-with-development-of-islet-autoimmunity-in-type-1-diabetes-high-risk-children-results-from-prospective-cohort-data
#9
Andreas Beyerlein, Andreas N Strobl, Christiane Winkler, Michaela Carpus, Annette Knopff, Ewan Donnachie, Donna P Ankerst, Anette-G Ziegler
AIMS/HYPOTHESIS: Vaccinations in early childhood potentially stimulate the immune system and may thus be relevant for the pathogenesis of autoimmune diseases such as type 1 diabetes (T1D). We determined the association of vaccination burden with T1D-associated islet autoimmunity in children with high familial risk followed prospectively from birth. METHODS: A total of 20,570 certified vaccination records from 1918 children were correlated with time to onset of T1D-associated islet autoimmunity using Cox regression, considering multiple time periods up until age two years and vaccination types, and adjusting for HLA genotype, sex, delivery mode, season of birth, preterm delivery and maternal T1D status...
March 3, 2017: Vaccine
https://www.readbyqxmd.com/read/28267366/eveningness-associates-with-smoking-and-sleep-problems-among-pregnant-women
#10
Ilona Merikanto, E Juulia Paavonen, Outi Saarenpää-Heikkilä, Tiina Paunio, Timo Partonen
Sleep problems during pregnancy impair maternal health and increase the risk for adverse pregnancy outcome. The circadian preference toward eveningness has been associated with sleep problems in previous studies. Here, we studied whether evening-type women had more sleep problems during their pregnancy, as compared with other chronotypes, in a sample consisting of 1653 pregnant women from the Finnish CHILD-SLEEP Birth Cohort. Chronotype was assessed with a shortened version of the morningness-eveningness questionnaire...
March 7, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28264828/potential-determinants-of-vitamin-d-in-finnish-adults-a-cross-sectional-study-from-the-northern-finland-birth-cohort-1966
#11
Saranya Palaniswamy, Elina Hyppönen, Dylan M Williams, Jari Jokelainen, Estelle Lowry, Sirkka Keinänen-Kiukaanniemi, Karl-Heinz Herzig, Marjo-Riitta Järvelin, Sylvain Sebert
OBJECTIVE: Evidence from randomised controlled trials suggests that vitamin D may reduce multimorbidity, but very few studies have investigated specific determinants of vitamin D2 and D3 (two isoforms of 25-hydroxyvitamin D). The aim of the study was to investigate the determinants of vitamin D2 and D3 and to identify the risk factors associated with hypovitaminosis D. DESIGN: Cross-sectional study. SETTING: Northern Finland Birth Cohort 1966...
March 6, 2017: BMJ Open
https://www.readbyqxmd.com/read/28264782/pregnancy-outcome-and-ultraviolet-radiation-a-systematic-review
#12
REVIEW
Lauren Megaw, Tom Clemens, Chris Dibben, Richard Weller, Sarah Stock
BACKGROUND: Season and vitamin D are indirect and direct correlates of ultraviolet (UV) radiation and are associated with pregnancy outcomes. Further to producing vitamin D, UV has positive effects on cardiovascular and immune health that may support a role for UV directly benefitting pregnancy. OBJECTIVES: To investigate the effects of UV exposure on pregnancy; specifically fetal growth, preterm birth and hypertensive complications. METHODS: We conducted a systematic review of Medline, EMBASE, DoPHER, Global Health, ProQuest Public Health, AustHealth Informit, SCOPUS and Google Scholar to identify 537 citations, 8 of which are included in this review...
March 3, 2017: Environmental Research
https://www.readbyqxmd.com/read/28258738/ambient-temperature-and-air-quality-in-relation-to-small-for-gestational-age-and-term-low-birthweight
#13
Sandie Ha, Yeyi Zhu, Danping Liu, Seth Sherman, Pauline Mendola
BACKGROUND: Exposures to extreme ambient temperature and air pollution are linked to adverse birth outcomes, but the associations with small for gestational age (SGA) and term low birthweight (tLBW) are unclear. We aimed to investigate exposures to site-specific temperature extremes and selected criteria air pollutants in relation to SGA and tLBW. METHODS: We linked medical records of 220,572 singleton births (2002-2008) from 12 US sites to local temperature estimated by the Weather Research and Forecasting model, and air pollution estimated by modified Community Multiscale Air Quality models...
March 1, 2017: Environmental Research
https://www.readbyqxmd.com/read/28253323/the-annual-carnival-in-guadeloupe-french-west-indies-is-associated-with-an-increase-in-the-number-of-conceptions-and-subsequent-births-nine-months-later-2000-2011
#14
Philippe Kadhel, Nathalie Costet, Teddy Toto, Eustase Janky, Luc Multigner
The seasonal patterns of conceptions and births differ between geographic areas. Several potential determinants of this variation have been identified, including biological, environmental and behavioral elements, but festive events are rarely mentioned. We investigated the possible association between the carnival and seasonal fertility variations in the French West Indies. We ran a retrospective registry-based study. The data were extracted from the registry of all births on Guadeloupe between 2000 and 2011 (n = 74,412), and from the Maternity Birth Register of the University Hospital, for all pregnancies of at least 14 completed weeks of gestation (observable conceptions) with an outcome recorded between 2007 and 2010 (n = 8,425)...
2017: PloS One
https://www.readbyqxmd.com/read/28244293/epidemiology-of-biliary-atresia-in-korea
#15
Kyung Jae Lee, Ju Whi Kim, Jin Soo Moon, Jae Sung Ko
Biliary atresia (BA) is the major cause of cholestasis and the leading indication for liver transplantation (LT). However, the incidence of BA in Korea has not been reported. The aim of this study was to investigate the incidence and clinical outcomes of BA in Korea. We used the Korean universal health insurance database and extracted data regarding BA patients younger than 18 years of age admitted between 2011 and 2015. The incidence of BA was calculated by dividing the number of BA patients by the number of live births...
April 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28237252/effect-of-ebola-virus-disease-on-maternal-and-child-health-services-in-guinea-a-retrospective-observational-cohort-study
#16
Alexandre Delamou, Alison M El Ayadi, Sidikiba Sidibe, Therese Delvaux, Bienvenu S Camara, Sah D Sandouno, Abdoul H Beavogui, Georges W Rutherford, Junko Okumura, Wei-Hong Zhang, Vincent De Brouwere
BACKGROUND: The 2014 west African epidemic of Ebola virus disease posed a major threat to the health systems of the countries affected. We sought to quantify the consequences of Ebola virus disease on maternal and child health services in the highly-affected Forest region of Guinea. METHODS: We did a retrospective, observational cohort study of women and children attending public health facilities for antenatal care, institutional delivery, and immunisation services in six of seven health districts in the Forest region (Beyla, Guéckédou, Kissidougou, Lola, Macenta, and N'Zérékoré)...
April 2017: Lancet Global Health
https://www.readbyqxmd.com/read/28231256/advancing-the-match-mismatch-framework-for-large-herbivores-in-the-arctic-evaluating-the-evidence-for-a-trophic-mismatch-in-caribou
#17
David Gustine, Perry Barboza, Layne Adams, Brad Griffith, Raymond Cameron, Kenneth Whitten
Climate-induced shifts in plant phenology may adversely affect animals that cannot or do not shift the timing of their reproductive cycle. The realized effect of potential trophic "mismatches" between a consumer and its food varies with the degree to which species rely on dietary income and stored capital. Large Arctic herbivores rely heavily on maternal capital to reproduce and give birth near the onset of the growing season but are they vulnerable to trophic mismatch? We evaluated the long-term changes in the temperatures and characteristics of the growing seasons (1970-2013), and compared growing conditions and dynamics of forage quality for caribou at peak parturition, peak lactation, and peak forage biomass, and plant senescence between two distinct time periods over 36 years (1977 and 2011-13)...
2017: PloS One
https://www.readbyqxmd.com/read/28215678/the-impact-of-ovarian-stimulation-protocol-on-oocyte-quality-subsequent-in%C3%A2-vitro-embryo-development-and-pregnancy-after-transfer-to-recipients-in-eld-s-deer-rucervus-eldii-thamin
#18
Ampika Thongphakdee, Debra K Berg, Theerawat Tharasanit, Nikorn Thongtip, Wanlaya Tipkantha, Chainarong Punkong, Daraka Tongthainan, Sakhon Noimoon, Umaporn Maikeaw, Nudthakamol Kajornklin, Boripat Siriaroonrat, Pierre Comizzoli, Sumate Kamolnorranath
Propagating genetically valuable individuals through oocyte collection, in vitro fertilization (IVF) and embryo transfer is critical to maintain sustainable populations of the endangered Eld's deer. The objectives of this study were to assess the impact of exogenous FSH injections on (1) the number and in vitro competence of oocytes collected and (2) the developmental potential of resulting IVF embryos after transfer into recipients during the breeding season (February-April). In a pilot experiment, estrus synchronization was conducted in three surplus females (using intravaginal progesterone-releasing devices, CIDRG for 14 days and injections of buserelin (a GnRH agonist)...
March 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28213681/quantifying-functionals-of-age-distributions-in-the-wild-by-solving-an-operator-equation
#19
Hao Ji, Hans-Georg Müller, Nikos T Papadopoulos, James R Carey
Residual demography is a recent concept that has proved to be a useful tool to gain insights about the age distributions of wild populations, especially insects. We develop an operator equation that permits the derivation of functionals of the age distribution in wild populations, such as mean age, within the framework of residual demography. Our method combines information from an observed captive cohort, which consists of subjects that are sampled from the wild with unknown ages and then raised in the laboratory until death, and from a reference cohort that consists of subjects raised in the laboratory since birth of the same population...
February 17, 2017: Journal of Mathematical Biology
https://www.readbyqxmd.com/read/28213594/brighter-children-the-association-between-seasonality-of-birth-and-child-iq-in-a-population-based-birth-cohort
#20
Nina H Grootendorst-van Mil, Régine P M Steegers-Theunissen, Albert Hofman, Vincent W V Jaddoe, Frank C Verhulst, Henning Tiemeier
OBJECTIVE: Season of birth has repeatedly been found to be a risk indicator for adverse neurodevelopmental outcomes. Several explanations for this finding have been put forward but no conclusion has been reached. In the current study, we explored the role of sociodemographic and biological factors in the association between season of birth and child IQ. DESIGN: In a prenatally recruited birth cohort (born in 2002-2006), we examined the association between season of birth and non-verbal IQ at age 6 years among 6034 children...
February 17, 2017: BMJ Open
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