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seasonality of birth

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https://www.readbyqxmd.com/read/29159463/a-nationwide-survey-of-the-influence-of-month-of-birth-on-the-risk-of-developing-multiple-sclerosis-in-sweden-and-iceland
#1
Olöf Eliasdottir, Anders Hildeman, Marco Longfils, O Nerman, J Lycke
Previous studies have shown that the risk of multiple sclerosis (MS) is associated with season of birth with a higher proportion of MS patients being born in spring. However, this relationship has recently been questioned and may be due to confounding factors. Our aim was to assess the influence from season or month of birth on the risk of developing MS in Sweden and Iceland. Information about month of birth, gender, and phenotype of MS for patients born 1940-1996 was retrieved from the Swedish MS registry (SMSR), and their place of birth was retrieved from the Swedish Total Population Registry (TPR)...
November 20, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/29149439/trends-in-utilization-of-outpatient-respiratory-syncytial-virus-prophylaxis-with-palivizumab-among-medicaid-and-commercially-insured-infants
#2
Melissa Pavilack, Robert A Clifford, Tara Gonzales, Amanda M Kong, Sally Wade, Kimmie K McLaurin
INTRODUCTION: Palivizumab is indicated for the prevention of respiratory syncytial virus (RSV) infection in high-risk children. Previous palivizumab utilization studies examined prior authorization claims but did not examine utilization within insured populations as a whole. This study describes outpatient palivizumab utilization trends and characterizes high-risk infants receiving palivizumab within Medicaid- and commercially insured populations. METHODS: Infants born July 1, 2003 through June 30, 2013 were identified in the MarketScan(®) Multistate Medicaid and Commercial claims databases...
November 17, 2017: Infectious Diseases and Therapy
https://www.readbyqxmd.com/read/29146097/descriptive-study-of-current-therapeutic-practices-clinical-reproductive-findings-and-incidence-of-pregnancy-loss-in-intensively-managed-thoroughbred-mares
#3
B V Rose, M Firth, B Morris, J M Roach, D C Wathes, K L P Verheyen, A M de Mestre
Therapeutic practices in equine reproductive medicine have dramatically evolved over the last 20 years but current usage is not described. The aims of this study were to provide a description of medication use and clinical findings of reproductive examinations alongside measures of reproductive efficiency in thoroughbreds. A prospective cohort study was conducted in the 2013 and 2014 breeding seasons. Mare and stallion details, information on veterinary interventions and findings of reproductive ultrasound scans were collected using questionnaires and entered into a custom-designed Microsoft Access database...
November 10, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/29146008/heat-and-pregnancy-related-emergencies-risk-of-placental-abruption-during-hot-weather
#4
Siyi He, Tom Kosatsky, Audrey Smargiassi, Marianne Bilodeau-Bertrand, Nathalie Auger
INTRODUCTION: Outdoor heat increases the risk of preterm birth and stillbirth, but the association with placental abruption has not been studied. Placental abruption is a medical emergency associated with major morbidity and mortality in pregnancy. We determined the relationship between ambient temperature and risk of placental abruption in warm seasons. MATERIAL AND METHODS: We performed a case-crossover analysis of 17,172 women whose pregnancies were complicated by placental abruption in Quebec, Canada from May to October 1989-2012...
November 13, 2017: Environment International
https://www.readbyqxmd.com/read/29136010/association-between-birth-season-and-physical-development-in-children-under-3-years-old-residing-in-low-income-counties-in-western-china
#5
Fangliang Lei, Shanshan Li, Baibing Mi, Danmeng Liu, Jiaomei Yang, Pengfei Qu, Ruo Zhang, Xiaofeng Zhang, Jia Ying, Shaonong Dang, Hong Yan
OBJECTIVE: To explore the association between birth season and physical development and provide a necessary reference value to inform the implementation of public health services. DESIGN: Cross-sectional study. SETTING: Forty-five counties in ten provinces in western China in 2005. SUBJECTS: A sample of 13,387 children under 3 years old and their mothers were recruited using a stratified, multistage, cluster random sampling method...
2017: PloS One
https://www.readbyqxmd.com/read/29121205/pregnancy-and-lifetime-exposure-to-fine-particulate-matter-and-infant-mortality-in-massachusetts-2001-2007
#6
Ji-Young Son, Hyung Joo Lee, Petros Koutrakis, Michelle L Bell
Many studies have found associations between particulate matter having an aerodynamic diameter of ≤2.5 μm (PM2.5) and adult mortality. Comparatively few studies evaluated particles and infant mortality, although infants and children are particularly vulnerable to pollution. Moreover, existing studies mostly focused on short-term exposure to larger particles. We investigated PM2.5 exposure during pregnancy and lifetime and postneonatal infant mortality. The study included 465,682 births with 385 deaths in Massachusetts (2001-2007)...
November 7, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/29096022/current-recommended-vitamin-d-prenatal-supplementation-and-fetal-growth-results-from-china-anhui-birth-cohort-study
#7
Rui-Xue Tao, Deng-Hon Meng, Jing-Jing Li, Shi-Lu Tong, Jia-Hu Hao, Kun Huang, Fang-Biao Tao, Peng Zhu
Context: Maternal vitamin D insufficiency have been associated with fetal growth restriction. However, the effect ofmaternal vitamin D supplementation on fetal growth has not been confirmed. Objective: To assess the effect of maternal vitamin D supplementation recommended byIOMduring pregnancy on the neonatal vitamin D status and the risk of small for gestational age (SGA). Design and Participants: As part of the China-Anhui Birth Cohort study, maternal sociodemographic characteristics, food intake, lifestyle, information of vitamin D supplementation and birth outcomes were prospectively collected...
October 31, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29053126/-effect-of-cytokine-genes-and-season-of-birth-on-personality
#8
M V Alfimova, V E Golimbet, G I Korovaitseva, T V Lezheiko, N V Kondrat'ev, M V Gabaeva
AIM: To evaluate the interaction effects of season of birth and immune system genes on the personality traits 'Novelty seeking' (NS) and 'Self-directedness' (SD). Based on results on an influence of the immune system on the brain processes, the authors hypothesized that the interaction of immune system genes and season of birth, which is relevant for immune phenotype, can contribute to the development of personality traits. MATERIAL AND METHODS: NS and SD were measured in 336 healthy volunteers, aged from 16 to 67 years, using the Temperament and Character Inventory (TCI-125)...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/29051074/pairing-ultrasonography-with-endocrinology-to-elucidate-underlying-mechanisms-of-successful-pregnancy-in-the-northern-fur-seal-callorhinus-ursinus
#9
Michelle R Shero, Don R Bergfelt, J Ward Testa, Gregg P Adams
Reproductive success is one of the central tenets of conservation management programs, yet the inability to study underlying physiological processes in a minimally-invasive manner and the unpredictable nature of wild animal populations leaves large gaps in our knowledge of factors critical to successful reproduction in wild species. This study integrated ultrasonography of the reproductive tract and analysis of reproductive hormones in 172 northern fur seals (Callorhinus ursinus) to identify intrinsic factors associated with reinitiating embryonic growth at the end of diapause...
January 1, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29050087/-study-on-the-correlation-between-meteorological-factors-and-acute-otitis-media-in-outpatients-of-children-in-beijing
#10
Y X Lu, J Q Liang, Q L Gu, X M Yu, X Yan
Objective: To explore the characteristics of acute otitis media(AOM) in children in Beijing and its correlation with meteorological factors. Methods: Data were collected in 2011-2013 in the Otolaryngology Department of Capital Institute of Pediatrics. AOM in children with relevant information, such as age, sex and season, with the same period of the Beijing municipal meteorological data (the average temperature, average pressure, average wind speed, humidity and PM2.5) were compared to analysis the relationship of meteorological environmental parameters and the onset of AOM in children...
October 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/29049509/prenatal-air-pollution-and-newborns-predisposition-to-accelerated-biological-aging
#11
Dries S Martens, Bianca Cox, Bram G Janssen, Diana B P Clemente, Antonio Gasparrini, Charlotte Vanpoucke, Wouter Lefebvre, Harry A Roels, Michelle Plusquin, Tim S Nawrot
Importance: Telomere length is a marker of biological aging that may provide a cellular memory of exposures to oxidative stress and inflammation. Telomere length at birth has been related to life expectancy. An association between prenatal air pollution exposure and telomere length at birth could provide new insights in the environmental influence on molecular longevity. Objective: To assess the association of prenatal exposure to particulate matter (PM) with newborn telomere length as reflected by cord blood and placental telomere length...
October 16, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/29045732/life-history-adaptations-to-seasonality
#12
Øystein Varpe
Seasonality creates a template for many natural processes and evolutionary adaptations. Organisms are often faced with an annual cycle consisting of a productive (favorable) and unproductive period. This yearly cycle along with other seasonal variations in abiotic factors and associated biotic interactions form strong selection pressures shaping the scheduling of annual activities and the developmental stages and modes of life through the year. Annual decisions impact trade-offs that involve both current and future reproductive value (RV), and life history theory provides the foundation to understand these linkages between phenology and an organism's full life...
November 1, 2017: Integrative and Comparative Biology
https://www.readbyqxmd.com/read/29036387/uncovering-exposures-responsible-for-birth-season-disease-effects-a-global-study
#13
Mary Regina Boland, Pradipta Parhi, Li Li, Riccardo Miotto, Robert Carroll, Usman Iqbal, Phung-Anh Alex Nguyen, Martijn Schuemie, Seng Chan You, Donahue Smith, Sean Mooney, Patrick Ryan, Yu-Chuan Jack Li, Rae Woong Park, Josh Denny, Joel T Dudley, George Hripcsak, Pierre Gentine, Nicholas P Tatonetti
Objective: Birth month and climate impact lifetime disease risk, while the underlying exposures remain largely elusive. We seek to uncover distal risk factors underlying these relationships by probing the relationship between global exposure variance and disease risk variance by birth season. Material and Methods: This study utilizes electronic health record data from 6 sites representing 10.5 million individuals in 3 countries (United States, South Korea, and Taiwan)...
September 28, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/29029729/schmallenberg-virus-a-novel-virus-of-veterinary-importance
#14
Kerstin Wernike, Martin Beer
In late 2011, unspecific clinical symptoms such as fever, diarrhea, and decreased milk production were observed in dairy cattle in the Dutch/German border region. After exclusion of classical endemic and emerging viruses by targeted diagnostic systems, blood samples from acutely diseased cows were subjected to metagenomics analysis. An insect-transmitted orthobunyavirus of the Simbu serogroup was identified as the causative agent and named Schmallenberg virus (SBV). It was one of the first detections of the introduction of a novel virus of veterinary importance to Europe using the new technology of next-generation sequencing...
2017: Advances in Virus Research
https://www.readbyqxmd.com/read/29029635/individual-signatures-and-environmental-factors-shape-skin-microbiota-in-healthy-dogs
#15
Anna Cuscó, Janelle M Belanger, Liza Gershony, Alma Islas-Trejo, Kerinne Levy, Juan F Medrano, Armand Sánchez, Anita M Oberbauer, Olga Francino
BACKGROUND: The individual, together with its environment, has been reported as the main force driving composition and structure of skin microbiota in healthy dogs. Therefore, one of the major concerns when analyzing canine skin microbiota is the likely influence of the environment. Despite the dense fur covering, certain skin diseases exhibit differential prevalence among skin sites, dog breeds, and individuals. RESULTS: We have characterized the normal variability of dog skin microbiota in a well-controlled cohort of a large number of Golden-Labrador Retriever crossed dogs (N = 35) with similar ages, related genetic background, and a shared environment...
October 13, 2017: Microbiome
https://www.readbyqxmd.com/read/29029193/sex-and-iron-modify-fibroblast-growth-factor-23-fgf23-concentration-in-1-year-old-children
#16
Elisa Holmlund-Suila, Maria Enlund-Cerullo, Saara Valkama, Helena Hauta-Alus, Jenni Rosendahl, Otto Helve, Timo Hytinantti, Heli Viljakainen, Sture Andersson, Outi Mäkitie
Context: Fibroblast growth factor 23 (FGF23) plays an important role in phosphate homeostasis but its regulation is inadequately characterized. Objective: To examine regulators of FGF23, especially sex and iron status, in early childhood. Design: A cross-sectional study involving 1-year-old children. Setting and participants: Healthy term infants with a birth weight appropriate for gestational age were recruited to an ongoing vitamin D trial at the Kätilöopisto Maternity Hospital, Helsinki, Finland...
October 5, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29029166/beyond-antigenic-match-possible-agent-host-and-immuno-epidemiological-influences-on-influenza-vaccine-effectiveness-during-the-2015-16-season-in-canada
#17
Danuta M Skowronski, Catharine Chambers, Suzana Sabaiduc, Gaston De Serres, Anne-Luise Winter, James A Dickinson, Jonathan B Gubbay, Steven J Drews, Christine Martineau, Hugues Charest, Mel Krajden, Nathalie Bastien, Yan Li
Background: Vaccine effectiveness (VE) estimates are reported from Canada's Sentinel Practitioner Surveillance Network (SPSN) for the 2015-16 influenza season, characterized by a delayed A(H1N1)pdm09 epidemic and concurrent B(Victoria) activity. Potential influences beyond antigenic match are explored including viral genomic variation, birth cohort effects, prior vaccination and epidemic period. Methods: VE was estimated by test-negative design comparing adjusted-odds ratio for influenza test-positivity among vaccinated vs...
October 4, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29026540/energetic-protein-supplementation-in-the-last-60%C3%A2-days-of-gestation-improves-performance-of-beef-cows-grazing-tropical-pastures
#18
Aline Gomes da Silva, Mário Fonseca Paulino, Edenio Detmann, Henrique Jorge Fernandes, Lincoln da Silva Amorim, Román Enrique Maza Ortega, Victor Valério de Carvalho, Josilaine Aparecida da Costa Lima, Felipe Henrique de Moura, Mariana Benevides Monteiro, Jéssika Almeida Bitencourt
BACKGROUND: Nutrition is one of the most important factors that affect animal performance, and it therefore also impacts on financial results in beef systems. In this way, finding the best strategy for feeding supplements is of paramount importance. Aiming to evaluate the effect of supplement feeding strategies for beef cows in the last third of gestation, two experiments were conducted. In Experiment 1, 35 pregnant Nellore cows were assigned to a completely randomized design with four treatments: control, which received no supplement; supplementation for the last 30 d of gestation (30-d; 3...
2017: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/28986694/stress-related-hormonal-alterations-growth-and-pelleted-starter-intake-in-pre-weaning-holstein-calves-in-response-to-thermal-stress
#19
E López, M Mellado, A M Martínez, F G Véliz, J E García, A de Santiago, E Carrillo
This study aimed to investigate the effect of heat stress and month of birth on growth performance, pelleted starter intake, and stress-related hormones in Holstein calves. Birth weight and growth records, representing 4735 Holstein calves from a large commercial dairy herd in northern Mexico (25° N; 22.3 °C mean annual temperature) from 2013 to 2015, were analyzed. Temperature-humidity index (THI) at calving, season of birth, and month of birth were the independent variables, whereas growth traits were the dependent variables...
October 7, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28985755/a-retrospective-analysis-of-trends-in-maternal-mortality-in-a-gambian-tertiary-health-centre
#20
Patrick Idoko, Matthew O Anyanwu, Sabel Bass
BACKGROUND: Maternal mortality ratio (MMR) has been on the decline in the Gambia since 1990. However, there has been no steady decline in maternal mortality ratio in the Edward Francis Small Teaching Hospital, the only tertiary health facility in the Gambia. The aim of the study is to determine the trend in maternal mortality over the last 8 years.A retrospective review of all maternal deaths occurring at the Edward Francis Small Teaching Hospital from 1st January 2007 to 31st December 2014 was done...
October 6, 2017: BMC Research Notes
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