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https://www.readbyqxmd.com/read/28813562/polygenic-scores-for-major-depressive-disorder-and-risk-of-alcohol-dependence
#1
Allan M Andersen, Robert H Pietrzak, Henry R Kranzler, Li Ma, Hang Zhou, Xiaoming Liu, John Kramer, Samuel Kuperman, Howard J Edenberg, John I Nurnberger, John P Rice, Jay A Tischfield, Alison Goate, Tatiana M Foroud, Jacquelyn L Meyers, Bernice Porjesz, Danielle M Dick, Victor Hesselbrock, Eric Boerwinkle, Steven M Southwick, John H Krystal, Myrna M Weissman, Douglas F Levinson, James B Potash, Joel Gelernter, Shizhong Han
Importance: Major depressive disorder (MDD) and alcohol dependence (AD) are heritable disorders with significant public health burdens, and they are frequently comorbid. Common genetic factors that influence the co-occurrence of MDD and AD have been sought in family, twin, and adoption studies, and results to date have been promising but inconclusive. Objective: To examine whether AD and MDD overlap genetically, using a polygenic score approach. Design, Settings, and Participants: Association analyses were conducted between MDD polygenic risk score (PRS) and AD case-control status in European ancestry samples from 4 independent genome-wide association study (GWAS) data sets: the Collaborative Study on the Genetics of Alcoholism (COGA); the Study of Addiction, Genetics, and Environment (SAGE); the Yale-Penn genetic study of substance dependence; and the National Health and Resilience in Veterans Study (NHRVS)...
August 16, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28812316/literacy-acquisition-influences-children-s-rapid-automatized-naming
#2
Robin L Peterson, Anne B Arnett, Bruce F Pennington, Brian Byrne, Stefan Samuelsson, Richard K Olson
Previous research has established that learning to read improves children's performance on reading-related phonological tasks, including phoneme awareness (PA) and nonword repetition. Few studies have investigated whether literacy acquisition also promotes children's rapid automatized naming (RAN). We tested the hypothesis that literacy acquisition should influence RAN in an international, longitudinal population sample of twins. Cross-lagged path models evaluated the relationships among literacy, PA, and RAN across four time points from pre-kindergarten through grade 4...
August 15, 2017: Developmental Science
https://www.readbyqxmd.com/read/28808816/a-genome-wide-association-study-of-cognitive-function-in-chinese-adult-twins
#3
Chunsheng Xu, Dongfeng Zhang, Yili Wu, Xiaocao Tian, Zengchang Pang, Shuxia Li, Qihua Tan
Multiple loci or genes have been identified using genome-wide association studies mainly in western countries but with inconsistent results. No similar studies have been conducted in the world's largest and rapidly aging Chinese population. The paper aimed to identify the specific genetic variants associated with cognitive function in middle and old-aged Chinese dizygotic twins (DZ). Cognitive function was measured on 139 pairs of DZ by Montreal Cognitive Assessment. The subjects were genotyped at 1048575 SNP positions...
August 14, 2017: Biogerontology
https://www.readbyqxmd.com/read/28807205/facilitating-surgeon-understanding-of-complex-anatomy-using-a-three-dimensional-printed-model
#4
Barrett P Cromeens, William C Ray, Brad Hoehne, Fikir Abayneh, Brent Adler, Gail E Besner
BACKGROUND: 3-dimensional prints (3DP) anecdotally facilitate surgeon understanding of anatomy and decision-making. However, the actual benefit to surgeons or patients has not been quantified. This study investigates how surgeon understanding of complex anatomy is altered by a 3DP compared to computed tomography (CT) scan or CT + digital reconstruction (CT + DR). MATERIALS AND METHODS: Key anatomic features were segmented from a CT-abdomen/pelvis of pygopagus twins to build a DR and printed in color on a 3D printer...
August 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28805427/on-the-relative-importance-of-individual-level-characteristics-and-dyadic-interaction-effects-in-negotiations-variance-partitioning-evidence-from-a-twins-study
#5
Hillary Anger Elfenbein, Noah Eisenkraft, Jared R Curhan, Lisabeth F DiLalla
Negotiations are inherently dyadic. Negotiators' individual-level characteristics may not only make them perform better or worse in general, but also may make them particularly well- or poorly-suited to negotiate with a particular counterpart. The present research estimates the extent to which performance in a distributive negotiation is affected by (a) the negotiators' individual-level characteristics and (b) dyadic interaction effects that are defined by the unique pairings between the negotiators and their counterparts...
August 14, 2017: Journal of Applied Psychology
https://www.readbyqxmd.com/read/28804916/lane-s-disease-erythema-palmare-hereditarium-a-report-of-five-cases-and-a-review-of-the-literature
#6
Carlotta Gurioli, Annalisa Patrizi, Martina Lambertini, Iria Neri
BACKGROUND: Erythema palmare hereditarium (EPH), also known as Lane's disease, is a rare, benign condition presenting as persistent erythema involving the palms. EPH can appear at birth or later in life and usually in at least two members of the same family, although a sporadic case has been reported. METHODS: We report five cases of EPH and offer a review of the current literature. The first and second cases are twin boys presenting with erythema mainly on the thenar and hypothenar eminences and on the phalanges that appeared 8 months after birth...
August 14, 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/28803597/somali-latino-and-hmong-parents-perceptions-and-approaches-about-raising-healthy-weight-children-a-community-based-participatory-research-study
#7
Chrisa Arcan, Kathleen A Culhane-Pera, Shannon Pergament, Maira Rosas-Lee, Mai Bao Xiong
OBJECTIVE: Immigrants in the USA are confronted with health disparities, including childhood obesity and obesity-related chronic diseases. We aimed to identify perceptions of childhood body weight, approaches to raising healthy children and desires for supportive programmes of Somali, Latino and Hmong (SLM) parents in the Twin Cities, Minnesota, USA. DESIGN: Using community-based participatory research, ten focus groups (FG) were conducted with sixty-seven parents (n 28 Somali, three FG; n 19 Latino, four FG; n 20 Hmong, three FG) of 3-12-year-old children in their native language...
August 14, 2017: Public Health Nutrition
https://www.readbyqxmd.com/read/28803591/genetic-and-environmental-influences-on-correlations-between-hearing-and-cognitive-functions-in-middle-and-older-chinese-twins
#8
Chunsheng Xu, Dongfeng Zhang, Xiaocao Tian, Haiping Duan, Yili Wu, Zengchang Pang, Shuxia Li, Qihua Tan
The genetic and environmental impacts on correlations between hearing and cognitive functions have not been well studied. Cognitive function was evaluated by the Montreal Cognitive Assessment (MoCA). Hearing function was assessed by audiometric pure-tone hearing thresholds at different frequencies, including 0.5 kHz, 1 kHz, 2 kHz, 4 kHz, 8 kHz, and 12.5 kHz, with the lower hearing thresholds indicating better hearing function. Cognitive and hearing functions were measured on 379 complete twin pairs (240 monozygotic and 139 dizygotic pairs) with a median age of 50 years (range: 40-80 years)...
August 14, 2017: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/28803575/placental-expressions-of-cdkn1c-and-kcnq1ot1-in-monozygotic-twins-with-selective-intrauterine-growth-restriction
#9
Chenyu Gou, Xiangzhen Liu, Xiaomei Shi, Hanjing Chai, Zhi-Ming He, Xuan Huang, Qun Fang
CDKN1C and KCNQ1OT1 are imprinted genes that might be potential regulators of placental development. This study investigated placental expressions of CDKN1C and KCNQ1OT1 in monozygotic twins with and without selective intrauterine growth restriction (sIUGR). Seventeen sIUGR and fifteen normal monozygotic(MZ) twin pairs were examined. Placental mRNA expressions of CDKN1C and KCNQ1OT1 were detected by real-time fluorescent quantitative PCR. CDKN1C protein expression was detected by immunohistochemical assay and Western-blotting...
August 14, 2017: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/28803556/buffering-effects-of-safe-supportive-and-nurturing-relationships-among-women-with-childhood-histories-of-maltreatment
#10
S R Jaffee, R Takizawa, L Arseneault
BACKGROUND: Adults who were victims of childhood maltreatment tend to have poorer health compared with adults who did not experience abuse. However, many are in good health. We tested whether safe, supportive, and nurturing relationships buffer women with a history of childhood maltreatment from poor health outcomes in later life. METHODS: Participants included women from the Environmental Risk (E-Risk) Longitudinal Twin Study who were involved in an intimate relationship at some point by the time their twin children were 10 years old...
August 14, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28802943/pregnancy-outcomes-after-transvaginal-sacrospinous-hysteropexy
#11
Sabri Cavkaytar, Mahmut Kuntay Kokanalı, Umit Tasdemir, Melike Doganay, Orhan Aksakal
AIM: To evaluate the pregnancy outcomes in women who underwent transvaginal sacrospinous hysteropexy with the review of the literature STUDY DESIGN: 54 women who underwent transvaginal sacrospinous hysteropexy due to ≥grade 2 uterine prolapse during six-year period were identified from a computer based database. 8 of these who had pregnancy resulted in live birth subsequent to transvaginal sacrospinous hysteropexy were enrolled in this study. They were examined in case of pelvic organ prolapse recurrence and were questioned about their current self satisfaction status and PISQ-12 questionnaire...
August 4, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28801949/the-relationship-between-learning-mathematics-and-general-cognitive-ability-in-primary-school
#12
Richard Cowan, Jane Hurry, Emily Midouhas
Three relationships between learning mathematics and general cognitive ability have been hypothesized: The educational hypothesis that learning mathematics develops general cognitive skills, the psychometric hypothesis that differences in general cognitive ability cause differences in mathematical attainment, and the reciprocal influence hypothesis that developments in mathematical ability and general cognitive ability influence each other. These hypotheses are assessed with a sample of 948 children from the Twins Early Development Study who were assessed at 7, 9, and 10 years on mathematics, English, and general cognitive ability...
August 12, 2017: British Journal of Developmental Psychology
https://www.readbyqxmd.com/read/28800646/heritability-of-retinal-vascular-fractals-a-twin-study
#13
Anna Stage Vergmann, Rebecca Broe, Line Kessel, Jesper Leth Hougaard, Sören Möller, Kirsten Ohm Kyvik, Michael Larsen, Inger Christine Munch, Jakob Grauslund
Purpose: To determine the genetic contribution to the pattern of retinal vascular branching expressed by its fractal dimension. Methods: This was a cross-sectional study of 50 monozygotic and 49 dizygotic, same-sex twin pairs aged 20 to 46 years. In 50°, disc-centered fundus photographs, the retinal vascular fractal dimension was measured using the box-counting method and compared within monozygotic and dizygotic twin pairs using Pearson correlation coefficients...
August 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28799251/comparison-of-anticoagulation-regimens-for-pregnant-women-with-prosthetic-heart-valves-a-meta-analysis-of-prospective-studies
#14
Jing Wang, Kangqi Li, Hongyan Li, Weiwei Zhu, Haiyan Sun, Congxiao Lu
INTRODUCTION: Pregnancy is associated with a hypercoagulable state, which makes pregnant women with prosthetic heart valves at high risk of thromboembolism. Proper anticoagulation regimen should take both the maternal protection and the fetal outcomes into consideration. However, no consensus on the present anticoagulation regimen for those women has been reached yet, especially in the first trimester of pregnancy. AIMS: The present meta-analysis is conducted to compare anticoagulation efficiency and feto-maternal complications of heparin and warfarin in the first trimester...
August 11, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28797086/epigenetic-differences-between-monozygotic-twins-discordant-for-amyotrophic-lateral-sclerosis-als-provide-clues-to-disease-pathogenesis
#15
Paul E Young, Stephen Kum Jew, Michael E Buckland, Roger Pamphlett, Catherine M Suter
Amyotrophic lateral sclerosis (ALS) is a devastating late-onset neurodegenerative disorder in which only a small proportion of patients carry an identifiable causative genetic lesion. Despite high heritability estimates, a genetic etiology for most sporadic ALS remains elusive. Here we report the epigenetic profiling of five monozygotic twin pairs discordant for ALS, four with classic ALS and one with the progressive muscular atrophy ALS variant, in whom previous whole genome sequencing failed to uncover a genetic basis for their disease discordance...
2017: PloS One
https://www.readbyqxmd.com/read/28796907/likelihood-of-pregnancy-after-embryo-transfer-is-reduced-in-recipient-mares-with-a-short-preceding-oestrus
#16
J Cuervo-Arango, A N Claes, M Ruijter-Villani, T A Stout
BACKGROUND: Previous surveys reported a positive association between the length of the follicular phase and subsequent fertility in embryo transfer donor and Thoroughbred mares. However, it is unclear whether a longer oestrus positively influences fertilisation and oviductal development (oocyte quality, oviductal environment), or uterine receptivity and survival of the embryo in the uterus. OBJECTIVES: To determine the effect of length of oestrus (characterised by duration of endometrial oedema) on likelihood of pregnancy and early embryo loss (EEL) in recipient mares after embryo transfer (ET)...
August 10, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28796691/neonatal-outcomes-of-low-risk-late-preterm-twins-compared-with-late-preterm-singletons
#17
Shimrit Yaniv Salem, Mia Kibel, Elizabeth Asztalos, Arthur Zaltz, Jon Barrett, Nir Melamed
OBJECTIVE: To test the hypothesis that the risk of neonatal morbidity among late-preterm twins is similar to that of late-preterm singletons. METHODS: We conducted a retrospective cohort study of all women with twin or singleton pregnancy who gave birth during the late-preterm period in a single tertiary center between 2008 and 2015. Neonatal outcomes of low-risk, late-preterm twins were compared with those of low-risk, late-preterm singletons. The primary outcome was the same primary composite respiratory morbidity variable that was used in the randomized controlled trial of Gyamfi-Bannerman et al on the administration of antenatal corticosteroids during the late-preterm period...
August 4, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28796570/pedigree-analysis-of-familial-primary-concomitant-horizontal-strabismus-in-northern-india
#18
Zia Chaudhuri, Jibin John, Satinder Aneja, B K Thelma
PURPOSE: Familial clustering of common forms of primary strabismus like esotropia (ET) and exotropia (XT) is observed in a proportion of the strabismus cohort. The genetic components of this remain unidentified. Linkage studies have demonstrated susceptibility locus for primary strabismus at the STBMS1 locus on 7p22.1 as well as other loci on 4q28.3 and 7q31.2. Recently next generation sequencing (NGS) technology has emerged as a powerful tool in discovery genomics and a large number of novel disease-causing variants are being reported...
August 10, 2017: Strabismus
https://www.readbyqxmd.com/read/28794429/sexual-dimorphism-in-the-genetic-influence-on-human-childlessness
#19
Renske M Verweij, Melinda C Mills, Felix C Tropf, René Veenstra, Anastasia Nyman, Harold Snieder
Previous research has found a genetic component of human reproduction and childlessness. Others have argued that the heritability of reproduction is counterintuitive due to a frequent misinterpretation that additive genetic variance in reproductive fitness should be close to zero. Yet it is plausible that different genetic loci operate in male and female fertility in the form of sexual dimorphism and that these genes are passed on to the next generation. This study examines the extent to which genetic factors influence childlessness and provides an empirical test of genetic sexual dimorphism...
September 2017: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28793396/identifying-priority-management-intervals-of-discharge-and-tn-tp-concentration-with-copula-analysis-for-miyun-reservoir-inflows-north-china
#20
Xuan Wang, Nan Zang, Peiyu Liang, Yanpeng Cai, Chunhui Li, Zhifeng Yang
The quantitative environmental management of reservoir inflows is challenging due to complex coexistence relationships between water quantity and water quality variables. Taking discharge as a representative water quantity indicator, as well as total nitrogen (TN) and total phosphorus (TP) as water quality indicators for the twin rivers (i.e., the Chaohe and Baihe rivers) which run into the Miyun Reservoir in North China, this study calculated marginal probability distributions of these indicators, and analyzed the joint probability distribution of discharge and TN/TP concentration by applying the Frank copula function...
August 4, 2017: Science of the Total Environment
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