Results 21 to 30 of about 355,875 (268)

Bivariate genetic modelling of the response to an oral glucose tolerance challenge: A gene x environment interaction approach [PDF]

open access: yes, 2009
AIMS/HYPOTHESIS: Twin and family studies have shown the importance of genetic factors influencing fasting and 2 h glucose and insulin levels. However, the genetics of the physiological response to a glucose load has not been thoroughly investigated ...
Mangino, M.   +20 more
core   +1 more source

A Twin Study of Genetic Contributions to Hippocampal Morphology in Schizophrenia

open access: yesNeurobiology of Disease, 2002
Our goal was to establish whether altered hippocampal morphology represents a trait marker for genetic vulnerability in schizophrenia. We outlined the hippocampi on high-resolution MR images obtained from matched samples of control and discordant ...
Katherine L. Narr   +13 more
doaj   +1 more source

Molar incisor hypomineralisation: current knowledge and practice

open access: yesInternational Dental Journal, EarlyView., 2020
Background Molar incisor hypomineralisation (MIH) is a common developmental dental condition that presents in childhood. Areas of poorly formed enamel affect one or more first permanent molars and can cause opacities on the anterior teeth. MIH presents a variety of challenges for the dental team as well as functional and social impacts for affected ...
Helen D. Rodd   +4 more
wiley   +1 more source

Discordant phenotypes in twins with infantile nystagmus

open access: yesScientific Reports, 2021
Infantile nystagmus (IN) may result from aetiologies including albinism and FRMD7 mutations. IN has low prevalence, and twins with IN are rare. Whilst discordant presentation has been previously reported for IN, we present for the first time the ...
Abdullah Aamir   +12 more
doaj   +1 more source

Inheritance in Human Dizygotic Twinning [PDF]

open access: yesNew England Journal of Medicine, 1964
THIS paper is concerned with the question of whether the father plays any part in the occurrence of twins among his children.
White, Colin, Wyshak, Grace
openaire   +4 more sources

In Utero Diagnoses of Strikingly Similar Presentations of Complete Atrioventricular Septal Defects in a Pair of Dizygotic Twins Concordant for Trisomy 21

open access: yesCase Reports in Pediatrics, 2018
Trisomy 21, or Down syndrome (DS), is a genetic disorder affecting approximately 1 in 500–750 live births. The prevalence of DS has increased over the past two decades, correlating with a rise in the proportion of pregnancies complicated by advanced ...
Diamond Ling, Jonathan G Dayan
doaj   +1 more source

Risk of psychiatric disorders among the surviving twins after a co-twin loss

open access: yeseLife, 2020
Losing a co-twin by death is a severely stressful event yet with unknown impact on the surviving twin’s risk of psychiatric disorders. We identified all Swedish-born twins who lost a co-twin by death between 1973 and 2013 (n = 4,528), their 4939 non-twin
Huan Song   +6 more
doaj   +1 more source

Characterizing genetic and environmental influences on variable DNA methylation using monozygotic and dizygotic twins

open access: yesPLoS Genetics, 2018
Variation in DNA methylation is being increasingly associated with health and disease outcomes. Although DNA methylation is hypothesized to be a mechanism by which both genetic and non-genetic factors can influence the regulation of gene expression ...
E. Hannon   +10 more
semanticscholar   +1 more source

Twinning rate trend in a population sample from the city of São Paulo, Brazil

open access: yesGenetics and Molecular Biology, 2003
A retrospective study was carried out on a sample consisting of 89,491 deliveries occurred from 1979 through 1998, in the city of São Paulo, SP, Brazil. These deliveries included 935 twin and 26 triplet births. The mean incidence per 1,000 deliveries was
Gloria M.D.D. Colletto
doaj   +1 more source

Case Report: Identification of Germline Chimerism in Monochorionic Dizygotic Twins

open access: yesFrontiers in Genetics, 2021
Monochorionic twins are generally considered to be monozygotic, as monochorionic dizygotic (MCDZ) twins are extremely rare in natural pregnancies. Several studies have reported this rare occurrence, and most of these pregnancies have been conceived by ...
Juan Chen   +5 more
doaj   +1 more source

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