journal
MENU ▼
Read by QxMD icon Read
search

Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies

journal
https://read.qxmd.com/read/30739630/performing-together-monozygotic-twin-comedians-twin-research-mirror-image-cleft-lip-and-palate-dental-caries-noninvasive-prenatal-testing-capgras-syndrome-with-folie-%C3%A3-deux-in-the-news-athletic-twins-transgendered-twins-crib-sharing-common-careers
#1
Nancy L Segal
Twin studies have shown that our sense of humor has an underlying genetic component, but less investigation of the origins of stand-up comedy has been undertaken. This article briefly reviews twin research findings on humor, then describes the working partnership and social affiliation of a pair of monozygotic male twins who perform together as stand-up comedians. The abilities, personalities and temperaments of these twins suggest future avenues for research in this interesting area. Next, findings from twin studies and case reports of twins with cleft lip and palate, dental caries, noninvasive prenatal testing and Capgras syndrome (with folie à deux) are summarized...
February 11, 2019: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30698127/the-genetic-and-environmental-relationship-between-childhood-behavioral-inhibition-and-preadolescent-anxiety
#2
Jessica L Bourdon, Jeanne E Savage, Brad Verhulst, Dever M Carney, Melissa A Brotman, Daniel S Pine, Ellen Leibenluft, Roxann Roberson-Nay, John M Hettema
This study uses novel approaches to examine genetic and environmental influences shared between childhood behavioral inhibition (BI) and symptoms of preadolescent anxiety disorders. Three hundred and fifty-two twin pairs aged 9-13 and their mothers completed questionnaires about BI and anxiety symptoms. Biometrical twin modeling, including a direction-of-causation design, investigated genetic and environmental risk factors shared between BI and social, generalized, panic and separation anxiety. Social anxiety shared the greatest proportion of genetic (20%) and environmental (16%) variance with BI with tentative evidence for causality...
January 30, 2019: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30698121/twinning-rates-in-uruguay-between-1999-and-2015-association-with-socioeconomic-and-demographic-factors
#3
Noelia Gómez, Andrés Sosa, Sylvia Corte, Emma Otta
Twinning is rare among humans, but there is much variability among populations. Several studies show that certain demographic and socioeconomic factors, such as maternal age, mother's educational level and income, influence twinning rate. There is no background of analytical studies of twins in Uruguay. To the best of our knowledge, this is the first study that has focused on describing and analyzing Uruguayan twinning rates over a period of 17 years (1999-2015). The birth data were collected from the website of Uruguay's Ministry of Public Health...
January 30, 2019: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30663577/a-major-limitation-of-the-direction-of-causation-model-non-shared-environmental-confounding
#4
Stig Hebbelstrup Rye Rasmussen, Steven Ludeke, Jacob V B Hjelmborg
Determining (1) the direction of causation and (2) the size of causal effects between two constructs is a central challenge of the scientific study of humans. In the early 1990s, researchers in behavioral genetics invented what was termed the direction of causation (DoC) model to address exactly these two concerns. The model claims that for any two traits whose mode of inheritance is sufficiently different, the direction of causation can be ascertained using a sufficiently large genetically informative sample...
January 21, 2019: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30661511/religious-attendance-moderates-the-environmental-effect-on-prosocial-behavior-in-nigerian-adolescents
#5
Yoon-Mi Hur, Hoe-Uk Jeong, Frances Ajose, Ariel Knafo-Noam
There is a growing body of literature linking religious attendance to prosocial behavior (PB). The main purposes of the present study were to estimate genetic and environmental influences on the frequency of religious attendance (FRA) and to explore whether and how FRA moderates genetic and/or environmental influences on PB. As part of the Nigerian Twin and Sibling Study, 2860 (280 monozygotic male, 417 monozygotic female, 544 dizygotic male, 699 dizygotic female, and 920 opposite-sex dizygotic) twins (mean age = 14...
January 21, 2019: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30661510/social-competence-in-parents-increases-children-s-educational-attainment-replicable-genetically-mediated-effects-of-parenting-revealed-by-non-transmitted-dna
#6
Timothy C Bates, Brion S Maher, Lucía Colodro-Conde, Sarah E Medland, Kerrie McAloney, Margaret J Wright, Narelle K Hansell, Aysu Okbay, Kenneth S Kendler, Nicholas G Martin, Nathan A Gillespie
We recently reported an association of offspring educational attainment with polygenic risk scores (PRS) computed on parent's non-transmitted alleles for educational attainment using the second GWAS meta-analysis article on educational attainment published by the Social Science Genetic Association Consortium. Here we test the replication of these findings using a more powerful PRS from the third GWAS meta-analysis article by the Consortium. Each of the key findings of our previous paper is replicated using this improved PRS (N = 2335 adolescent twins and their genotyped parents)...
January 21, 2019: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30661509/does-gestational-diabetes-cause-additional-risk-in-twin-pregnancy
#7
Annabel C M Sheehan, Mark P Umstad, Stephen Cole, Thomas J Cade
It has been suggested that the risk of adverse perinatal outcomes in twin pregnancies is exacerbated by concomitant gestational diabetes mellitus (GDM). This study aimed to assess the risk incurred by twin pregnancy and by a diagnosis of GDM, separately, on the development of poor perinatal outcomes. A retrospective cohort study was conducted on all pregnant women at a tertiary center between 2016 and 2017. The impact of GDM and twin pregnancies on perinatal outcomes - birth weight above the 90th centile for gestational age, cesarean delivery, clinical neonatal hypoglycemia, and premature delivery (before 37 weeks' gestation) - was assessed using univariate and multivariate analyses...
January 21, 2019: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30560766/evidence-for-the-scarr-rowe-effect-on-genetic-expressivity-in-a-large-u-s-sample
#8
Michael A Woodley Of Menie, Jonatan Pallesen, Matthew A Sarraf
Using the continuous parameter estimation model (CPEM), a large genotyped adult sample of the population of Wisconsin, USA (the Wisconsin Longitudinal Study) is examined for evidence of the Scarr-Rowe effect, a gene × environment (G×E) interaction that reduces the heritability of IQ among those with low socioeconomic status (SES). This method allows the differential expressivity of polygenic scores predictive of both educational attainment and IQ (EA3) on the phenotype of IQ to be directly operationalized throughout the full range of these variables...
December 18, 2018: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30484417/study-design-and-rationale-for-the-mood-and-methylation-study-a-platform-for-multi-omics-investigation-of-depression-in-twins
#9
Eric Strachan, Jinying Zhao, Peter P Roy-Byrne, Emily Fowler, Tamara Bacus
Major depression is a complex disorder with no single, direct causal mechanism. Morbidity has been linked to genetic processes, developmental history, and unique environmental exposures. Epigenetic mechanisms, especially DNA methylation, are also likely important factors in the pathogenesis of major depressive disorder (MDD). A community-based twin sample has many advantages for epigenetic studies, given the shared genetic and developmental histories of same-sex twin pairs. This article describes the rationale and study design for the Mood and Methylation Study in which 133 twin pairs (101 monozygotic and 32 dizygotic), both discordant and concordant for lifetime history of MDD, were evaluated on a large number of variables related to MDD...
November 28, 2018: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30587275/thg-volume-21-issue-6-cover-and-back-matter
#10
(no author information available yet)
No abstract text is available yet for this article.
December 2018: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30587274/thg-volume-21-issue-6-cover-and-front-matter
#11
(no author information available yet)
No abstract text is available yet for this article.
December 2018: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30587273/fetal-origins-of-mental-disorders-an-answer-based-on-mendelian-randomization
#12
Subhi Arafat, Camelia C Minică
The Barker hypothesis states that low birth weight (BW) is associated with higher risk of adult onset diseases, including mental disorders like schizophrenia, major depressive disorder (MDD), and attention deficit hyperactivity disorder (ADHD). The main criticism of this hypothesis is that evidence for it comes from observational studies. Specifically, observational evidence does not suffice for inferring causality, because the associations might reflect the effects of confounders. Mendelian randomization (MR) - a novel method that tests causality on the basis of genetic data - creates the unprecedented opportunity to probe the causality in the association between BW and mental disorders in observation studies...
December 2018: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30522543/twins-working-together-collaboration-or-contest-twin-research-molar-pregnancy-social-support-conjoined-twins-immune-discordance-headlines-twin-politicians-multiple-birth-marriages-guinness-world-record-museum-of-memory-and-human-rights-santiago-chile
#13
Nancy L Segal
Twin research has found genetic influence underlying vocational interests, work values, and job satisfaction. In addition, numerous studies have shown that monozygotic (MZ) twins generally display greater within-pair cooperation and social closeness than dizygotic (DZ) twins. These findings are illuminated by exploring the occupational histories of two female twin pairs, one set MZ and the other set DZ. This is followed by a review of timely twin-based research reports on molar pregnancy, social support, conjoined twinning, and immune discordance...
December 2018: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30458892/human-genetics-society-of-australasia-position-statement-genetic-testing-and-personal-insurance-products-in-australia
#14
Ainsley J Newson, Sam Ayres, Jackie Boyle, Michael T Gabbett, Amy Nisselle
The expansion of genetic and genomic testing in clinical practice and research and the growing market for at home personal genome testing has led to increased awareness about the impact of this form of testing on insurance. Genetic or genomic information can be requested by providers of mutually rated insurance products, who may then use it when setting premiums or determining eligibility for cover under a particular product. Australian insurers are subject to relevant legislation and an industry standard that was updated in late 2016...
November 21, 2018: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30428952/age-sex-and-genetic-and-environmental-effects-on-unintentional-injuries-in-young-and-adult-twins
#15
Simo Salminen, Eero Vuoksimaa, Richard J Rose, Jaakko Kaprio
The aim of this study was to examine the effects of genetic and environment influences and sex on injury involvement using two sets of Finnish twin data. The younger participants were 955 twins born between 1983 and 1987, aged 20 to 24 years. The older participants were 12,428 twins born between 1930 and 1957, aged 33 to 60 years. Within-twin correlations in monozygotic and dizygotic twins suggested that genetic effects play no role in injury involvement among young twins, but do have some effect at older ages...
November 15, 2018: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30392485/the-x-linked-analog-of-the-hardy-weinberg-law
#16
Alan E Stark
The system of mating that maintains a general genotypic distribution among females with respect to an X-linked locus is defined. In particular, it is shown that Hardy-Weinberg proportions can be maintained with non-random mating.
November 5, 2018: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30376909/genetic-and-environmental-overlaps-among-sasang-constitution-types-a-multivariate-twin-study
#17
Yoon-Mi Hur, Siwoo Lee, Hee-Jeong Jin
According to the Sasang theory, humans can be categorized into one of the four Sasang constitution (SC) types. The four SC types are Tae-Yang (TY), Tae-Eum (TE), So-Yang (SY), and So-Eum (SE), which are determined mainly on the basis of anthropometric characteristics, personality, and the balance of the physiological functions of the major organ systems. There is a growing recognition in the complementary and alternative medicine area that SC types have the potential to be a useful scientific tool for the prevention, diagnosis, and treatment of diseases (Cooper, Evidence Based Complementary and Alternative Medicine, Vol...
October 31, 2018: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30375322/major-discordant-structural-anomalies-in-monochorionic-twins-spectrum-and-outcomes
#18
Maria Angela Rustico, Mariano Lanna, Stefano Faiola, Daniela Casati, Luigina Spaccini, Andrea Righini, Cecilia Parazzini, Marcello Napolitano, Barbara Scelsa, Gianluca Lista, Carla Corti, Giovanna Riccipetitoni, Irene Cetin
Monochorionic twins, resulting from a single fertilized egg giving rise to two separate embryos, are monozygotic and considered genetically identical. However, discordant phenotypes have been reported in monozygotic twins. We analyzed a retrospective cohort of 155 monochorionic pregnancies (312 twins) with major discordant structural anomalies coded by the ICD-10 system in order to describe the spectrum of anomalies, the management of the pregnancies, and the perinatal outcome. Treatment options included conservative management, selective feticide with bipolar cord coagulation, or complete termination...
October 30, 2018: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30375300/diagnosing-zygosity-in-giant-panda-twins-using-short-tandem-repeats
#19
Maiju Qiao, Yingmin Zhou, Thomas Connor, Rengui Li, Dan Tang, Hemin Zhang, Jianghong Ran
The giant panda, native to mountains of south-west China, is one of the world's rarest bear species and is subject to considerable conservation effort. In captivity, the proportion of twins accounts for 54% of the total number of births. To date, little is known about zygosity in panda populations - specifically, the proportion of monozygotic and dizygotic twins. In this study, we used 10 microsatellite markers for reliable zygosity testing, and the probability of monozygotic twins was 99.963% when all 10 markers were concordant...
October 30, 2018: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://read.qxmd.com/read/30345945/single-intrauterine-death-in-twins-the-importance-of-fetal-order
#20
Penelope L Ward, Karen L Reidy, Ricardo Palma-Dias, Lex W Doyle, Mark P Umstad
Perinatal mortality is higher in twins. Effects of twin order have not previously been studied in the context of single fetal demise. Our objective was to determine whether death of the fetus more proximal to the cervix will result in worse perinatal outcomes. Our population included multiple pregnancies with two viable fetuses confirmed prior to 20 weeks' gestation with the subsequent death of at least one twin. All the pregnancies were managed at The Royal Women's Hospital, Melbourne between 2006 and 2014...
October 22, 2018: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
journal
journal
41025
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"