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seasonality of birth

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https://www.readbyqxmd.com/read/27909564/seasons-in-the-sun-the-impact-on-ivf-results-one-month-later
#1
F Vandekerckhove, H Van der Veken, K Tilleman, I De Croo, E Van den Abbeel, J Gerris, P De Sutter
BACKGROUND: Several retrospective studies have evaluated seasonal variations in the outcome of IVF treatment. Some also included weather conditions, mostly temperature and hours of daylight. The results were conflicting. METHODS: In a retrospective study we analysed all fresh cycles (N = 9865) that were started between January 1, 2007 and December 31, 2012. Because some patients were included more than once, correction for duplicate patients was performed. We focused on individual variables provided as monthly results by our national meteorological institute...
June 27, 2016: Facts, Views & Vision in ObGyn
https://www.readbyqxmd.com/read/27905150/genetic-parameter-estimates-for-prenatal-and-postnatal-mortality-in-nellore-cattle
#2
L C Magalhães Silva, F Baldi, C Aboujaoude, G C Venturini, L G Albuquerque, M J R Paranhos da Costa
The aim of this study was to estimate genetic parameters for prenatal (PRE) and postnatal (POS) mortality in Nellore cattle. A total of 13 141 (PRE) and 17 818 (POS) records from Nellore females were used. PRE and POS were recorded using binary scale scores: a score of '1' was given to calves that were born alive (PRE) and those that were alive at weaning (POS), and a score of '0' was given to calves that were not alive at or around birth (PRE), as well as to those weighed at birth but not at weaning (POS)...
December 1, 2016: Journal of Animal Breeding and Genetics, Zeitschrift Für Tierzüchtung und Züchtungsbiologie
https://www.readbyqxmd.com/read/27900477/the-influence-of-seasonality-and-manufacturer-kit-lot-changes-on-17%C3%AE-hydroxyprogesterone-measurements-and-referral-rates-of-congenital-adrenal-hyperplasia-in-newborns
#3
Melissa Pearce, Erin Dauerer, A Gregory DiRienzo, Michele Caggana, Norma P Tavakoli
: Newborn screening for congenital adrenal hyperplasia (CAH) is performed by measuring the concentration of 17α-hydroxyprogesterone (17-OHP) in dried blood spots. Unfortunately, the level of 17-OHP varies due to multiple factors, and therefore, the false positive rate for the test is a challenge. We analyzed screening data from 2007 to 2015 to determine the effect of seasonal changes and manufacturer kit lot changes on 17-OHP values and on numbers of infants referred. Data from screening 2...
November 29, 2016: European Journal of Pediatrics
https://www.readbyqxmd.com/read/27898926/assessment-of-serum-25-hydroxyvitamin-d-concentrations-of-beef-cows-and-calves-across-seasons-and-geographical-locations
#4
C D Nelson, J L Powell, D M Price, M J Hersom, J V Yelich, M E Drewnoski, S L Bird, G Allen Bridges
Vitamin D is critical for the growth and development of calves and positively contributes to immune function of cattle. Serum 25-hydroxyvitamin D (25(OH)D) concentrations above 20 ng/mL have traditionally been considered adequate for growth and development of cattle, but recent evidence has indicated that concentrations below 30 ng/mL are insufficient for immunity. Because little information is available regarding vitamin D status of beef cattle, the objective of this study was to evaluate vitamin D status of beef cow-calf herds on pasture as affected by season and location...
September 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898687/effects-of-chronologic-age-and-young-child-exposure-on-respiratory-syncytial-virus-disease-among-us-preterm-infants-born-at-32-to-35-weeks-gestation
#5
Eric A F Simões, Evan J Anderson, Xionghua Wu, Christopher S Ambrose
OBJECTIVE: To estimate the incidence of respiratory syncytial virus (RSV) disease as a function of chronologic age and exposure to young children in US preterm infants. METHODS: In the RSV Respiratory Events among Preterm Infants Outcomes and Risk Tracking (REPORT) study, preterm infants born at 32-35 weeks gestational age (wGA) were enrolled from 188 US clinics and followed September-May of 2009-2010 or 2010-2011. Infants with medically-attended acute respiratory illness had nasal/pharyngeal swabs collected for viral testing...
2016: PloS One
https://www.readbyqxmd.com/read/27886083/a-prospective-study-of-serum-trace-elements-in-healthy-korean-pregnant-women
#6
Rihwa Choi, Jiyu Sun, Heejin Yoo, Seonwoo Kim, Yoon Young Cho, Hye Jeong Kim, Sun Wook Kim, Jae Hoon Chung, Soo-Young Oh, Soo-Youn Lee
This prospective study sought to investigate serum levels of trace elements (cobalt, copper, zinc, and selenium) and to assess their effects on pregnancy and neonatal outcomes. Serum levels of trace elements in 245 Korean pregnant women (median gestational age at delivery was 39 + 4 weeks and interquartile range was 38 + 4-40 + 1 weeks) were compared with those of 527 general adults and those of previous studies in other ethnic groups. Pregnancy and neonatal outcomes including gestational diabetes, preeclampsia, neonatal birth weight, and congenital abnormalities were assessed...
November 23, 2016: Nutrients
https://www.readbyqxmd.com/read/27885503/shoot-density-of-miscanthus-sinensis-populations-in-different-habitats-and-their-maintenance-mechanisms-in-relation-to-shoot-growth
#7
Katsumi Kobayashi, Yota Yokoi
How perennial grass populations are maintained in different climates is poorly understood at the level of individual shoots (ramets). During the years 1982-1987 and 1991-1993, measurements of shoot dynamics and growth in populations of a clonal grass, Miscanthus sinensis, were made at two sites in Japan that differed by approximately 5 °C in mean temperature. While annual shoot births were very stable during the period 1982-1987 at both sites, the number of flowering shoots fluctuated cyclically every year...
November 24, 2016: Journal of Plant Research
https://www.readbyqxmd.com/read/27884444/dynamics-of-parascaris-and-strongylus-spp-parasites-in-untreated-juvenile-horses
#8
J V Fabiani, E T Lyons, M K Nielsen
Parasite control in foals is of utmost importance due to the high susceptibility to parasitic infection and disease in this age group. Foals are commonly co-infected with strongyle and ascarid parasites, which complicate parasite control strategies. The present study retrospectively investigated necropsy records of foals born into a university herd kept without anthelmintic treatment since 1979. The aims were to statistically analyze the relationship between fecal egg counts, worm burdens, foal age, sex, and season with specific focus on Parascaris and Strongylus spp...
October 30, 2016: Veterinary Parasitology
https://www.readbyqxmd.com/read/27873432/low-perinatal-zinc-status-is-not-associated-with-the-risk-of-type-1-diabetes-in-children
#9
Julie N Kyvsgaard, Anne J Overgaard, Louise D Jacobsen, Steffen U Thorsen, Christian B Pipper, Thomas H Hansen, Søren Husted, Henrik B Mortensen, Flemming Pociot, Jannet Svensson
AIM: Immunologic events during fetal life may play a part in the pathogenesis of type 1 diabetes (T1D). As zinc is involved in immunologic processes, the purpose was to investigate perinatal zinc status and the later risk of developing T1D and association to age at onset. METHODS: A population-based case-control study based on data from Danish Childhood Diabetes Register and the Danish Newborn Screening Biobank. Cases and controls were matched by birth year and month...
November 22, 2016: Pediatric Diabetes
https://www.readbyqxmd.com/read/27872852/modelling-seasonal-brucellosis-epidemics-in-bayingolin-mongol-autonomous-prefecture-of-xinjiang-china-2010-2014
#10
Pengwei Lou, Lei Wang, Xueliang Zhang, Jiabo Xu, Kai Wang
Brucellosis is one of the severe public health problems; the cumulative number of new human brucellosis cases reached 211515 from 2010 to 2014 in China. Bayingolin Mongol Autonomous Prefecture is situated in the southeast of Xinjiang, where brucellosis infection occurs every year. Based on the reported data of newly acute human brucellosis cases for each season in Bayingolin Mongol Autonomous Prefecture, we proposed a susceptible, exposed, infected, and vaccinated (SEIV) model with periodic transmission rates to investigate the seasonal brucellosis transmission dynamics among sheep/cattle and from sheep/cattle to humans...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27863513/epidemiology-of-rubella-virus-cases-in-the-pre-vaccination-era-of-ethiopia-2009-2015
#11
Mekonen Getahun, Berhane Beyene, Kathleen Gallagher, Ayesheshem Ademe, Birke Teshome, Mesfin Tefera, Anjelo Asha, Aklog Afework, Esete Assefa, Yoseph HaileMariam, Yonas HaileGiorgis, Hiwot Ketema, Dejenie Shiferaw, Ayenachew Bekele, Daddi Jima, Amha Kebede
BACKGROUND: Rubella is a common mild rash illness caused by rubella virus. The majority of infections occur in children and young adults. The infection is the cause of a serious birth defect known as Congenital Rubella Syndrome (CRS) when a woman acquires infection early in pregnancy. Ethiopia has not yet established rubella virus surveillance and has not yet introduced rubella vaccine into the routine immunization program. We characterize the epidemiology of laboratory confirmed rubella virus cases collected through measles surveillance from 2009 to 2015 to better understand the burden of the disease in the country...
November 18, 2016: BMC Public Health
https://www.readbyqxmd.com/read/27857030/seasonal-variation-in-growth-of-berkshire-pigs-in-alternative-production-systems
#12
Hannah Park, Sang-Hyon Oh
Objective: The objective of the present study was to investigate the effects of farrowing month (FM), parity and sex on the growth performance of Berkshire swine raised in alternative production systems. Methods: A total of 40 farrowing records from 27 sows and 1258 BW records from 274 piglets collected over a two-year period were used for the analysis. Body weights were recorded at birth, weaning (28 d), 56, 84, 112 and 140 days. Any BW not recorded on schedule was recalculated to conform the days of age among corresponding BW records, using growth curves drawn with polynomial functions whose power was determined by the number of existing observations for each individual...
November 17, 2016: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/27853403/a-note-on-captive-breeding-and-reproductive-parameters-of-the-chinese-pangolin-manis-pentadactyla-linnaeus-1758
#13
Fuhua Zhang, Shibao Wu, Cuiyun Zou, Qiaoyun Wang, Shaoshan Li, Ruyong Sun
The Chinese pangolin (Manis pentadactyla Linnaeus, 1758) is a critically endangered species, and documents on its captive breeding and reproductive parameters are scarce. MP8, kept in the Pangolin Research Base for Artificial Rescue and Conservation Breeding of South China Normal University (the PRB-SCNU), gave birth to a male offspring (MP86) on 19 October 2011. The baby pangolin was well developed, with a weight of 120 g and a total length of 23.2 cm. The gestation length of MP8 was estimated to be from 182 to 225d...
2016: ZooKeys
https://www.readbyqxmd.com/read/27821195/characterizing-the-risk-of-respiratory-syncytial-virus-in-infants-with-older-siblings-a-population-based-birth-cohort-study
#14
P Jacoby, K Glass, H C Moore
From a population-based birth cohort of 245 249 children born in Western Australia during 1996-2005, we used linkage of laboratory and birth record datasets to obtain data including all respiratory syncytial virus (RSV) detections during infancy from a subcohort of 87 981 singleton children born in the Perth metropolitan area from 2000 to 2004. Using log binomial regression, we found that the risk of infant RSV detection increases with the number of older siblings, with those having ⩾3 older siblings experiencing almost three times the risk (relative risk 2·83, 95% confidence interval 2·46-3·26) of firstborn children...
November 8, 2016: Epidemiology and Infection
https://www.readbyqxmd.com/read/27821114/bright-light-therapy-in-pregnant-women-with-major-depressive-disorder-study-protocol-for-a-randomized-double-blind-controlled-clinical-trial
#15
Babette Bais, Astrid M Kamperman, Marjolein D van der Zwaag, Gwen C Dieleman, Hanneke W Harmsen van der Vliet-Torij, Hilmar H Bijma, Ritsaert Lieverse, Witte J G Hoogendijk, Mijke P Lambregtse-van den Berg
BACKGROUND: Depression during pregnancy is a common and high impact disease. Generally, 5-10 % of pregnant women suffer from depression. Children who have been exposed to maternal depression during pregnancy have a higher risk of adverse birth outcomes and more often show cognitive, emotional and behavioural problems. Therefore, early detection and treatment of antepartum depression is necessary. Both psychotherapy and antidepressant medication, first choice treatments in a non-pregnant population, have limitations in treating depression during pregnancy...
November 8, 2016: BMC Psychiatry
https://www.readbyqxmd.com/read/27817876/vitamin-d-supplementation-cord-25-hydroxyvitamin-d-and-birth-weight-findings-from-the-odense-child-cohort
#16
Sine Lykkedegn, Signe Sparre Beck-Nielsen, Grith Lykke Sorensen, Louise Bjoerkholt Andersen, Palle Bach Nielsen Fruekilde, Jan Nielsen, Henriette Boye Kyhl, Jan Stener Joergensen, Steffen Husby, Henrik Thybo Christesen
BACKGROUND & AIMS: Hypovitaminosis D, defined as serum 25-hydroxyvitamin D (s-25(OH)D) <50 nmol/L, is frequent in pregnant women and neonates worldwide and has been associated with both low birth weight (BW) and placental weight (PW) as well as reduced placental development. We aimed to assess the prevalence and the risk factors of cord vitamin D deficiency (s-25(OH)D <25 nmol/L) and insufficiency (s-25(OH)D 25-50 nmol/L) and to evaluate the association between cord s-25(OH)D levels and neonatal outcomes (BW, PW and PW/BW ratio)...
October 27, 2016: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/27815669/effect-of-agro-ecological-zone-season-of-birth-and-sex-on-pre-weaning-performance-of-nguni-calves-in-limpopo-province-south-africa
#17
T J Mpofu, M M Ginindza, N A Siwendu, K A Nephawe, B J Mtileni
The study was conducted to determine the effect of agro-ecological zone, season of birth and sex on Nguni calves' pre-weaning performance. Production indices such as birth weight (BW), weaning weight (WW), pre-weaning average daily gain (P-ADG) and pre-weaning gain (P-WG) were assessed in the different agro-ecological zones. Herd records on performance of 826 Nguni calves' from nine Nguni herds representing different agro-ecological zones: arid zone (n = 217); semi-arid zone (n = 296); dry sub-humid zone (n = 118) and humid zone (n = 195) were used for the analysis of pre-weaning calf performance...
November 4, 2016: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/27795767/vitamin-d-status-in-moroccan-pregnant-women-and-newborns-reports-of-102-cases
#18
Fouzia Mnebhi Loudyi, Jalal Kassouati, Meryem Kabiri, Naima Chahid, Aicha Kharbach, Hassan Aguenaou, Amina Barkat
INTRODUCTION: Vitamin D insufficiency to pregnant women has been associated with a number of adverse consequences, and has been recognized as a public health concern. The aim of this study was to evaluate vitamin D status of Morrocan pregnant women and their newborns. Our study is being the first of its kind in Morocco, as it supports the program of systematic supplementation of pregnant women in the third quarter. Its results have established a new program for the fight against the deficit of various nutrients, thereby intake of vitamin D has become routine...
2016: Pan African Medical Journal
https://www.readbyqxmd.com/read/27794703/how-your-date-of-birth-may-determine-your-gluten-tolerance
#19
(no author information available yet)
The season in which you were born and even your place of birth could affect your risk of developing childhood coeliac disease.
September 7, 2016: Nursing Standard
https://www.readbyqxmd.com/read/27784657/maternal-influenza-immunization-and-adverse-birth-outcomes-using-data-and-practice-to-inform-theory-and-research-design
#20
REVIEW
Varun K Phadke, Mark C Steinhoff, Saad B Omer, Noni E MacDonald
Maternal influenza immunization can reduce influenza-attributable morbidity and mortality among pregnant women and infants who are too young to be vaccinated. Data from empirical studies also support the hypothesis that immunization can protect the fetus against adverse outcomes if the mother is exposed to influenza. In their theoretical analysis in the Journal, Hutcheon et al. (Am J Epidemiol 2016;184(3):227-232) critiqued the existing evidence of the fetal benefits of maternal influenza immunization by calculating the sample sizes needed to demonstrate hypothetical reductions in risk and concluded that the benefits observed in empirical studies are likely implausible...
December 1, 2016: American Journal of Epidemiology
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