Dementia risk in women higher in same‐sex than opposite‐sex twins
Introduction Hormones may be one possible mechanism underlying sex differences in dementia incidence. We examined whether presumed differential prenatal hormone milieu is related to dementia risk by comparing dementia rates in same‐ and opposite‐sex ...
Jing Luo +5 more
doaj +1 more source
Utilizing twins as controls for non-twin case-materials in genome wide association studies. [PDF]
Twin registries around the globe have collected DNA samples from large numbers of monozygotic and dizygotic twins. The twin sample collections are frequently used as controls in disease-specific studies together with non-twins.
Andrea Ganna +9 more
doaj +1 more source
Genetic and environmental links between self-reports and parent-reports of child personality [PDF]
Personality ratings have been consistently found to be reliable and moderately heritable, but interrater agreement between self- and other-report of personality are low-to-moderate, particularly in childhood samples. The current study aims to examine the
Savicki, Stephanie Louise
core +1 more source
Economics of Twin Pregnancies in Dairy Cattle
Twinning in Holstein dairy cows has increased over time concurrent with increased milk production. Twinning in dairy cattle is not desirable due to the negative effects on both cows that calve twins and calves born as twins that result in economic losses
Victor E. Cabrera, Paul M. Fricke
doaj +1 more source
Psychosocial twin cohort studies in Japan: the Keio Twin Research Center (KoTReC) [PDF]
The Keio Twin Research Center (KoTReC) was established in 2009 at Keio University to combine two longitudinal cohort projects — the Keio Twin Study (KTS) for adolescence and adulthood and the Tokyo Twin Cohort Project (ToTCoP) for infancy and childhood ...
Ando, Juko +20 more
core +2 more sources
Urticaria in Monozygotic and Dizygotic Twins [PDF]
Aim. To identify risk factors for urticaria, to determine the relative proportion of the susceptibility to urticaria that is due to genetic factors in an adult clinical twin sample, and to further determine whether the genetic susceptibility to urticaria overlaps with the genetic susceptibility to atopic diseases. Methods.
Thomsen, Simon Francis +3 more
openaire +4 more sources
Prevention of multiple pregnancy
Monozygotic twins are two individuals derived from one sperm and one egg; dizygotic twins are individuals born together but originating from different eggs fertilized by different sperms.
P.G. Crosignani
doaj +1 more source
Genetic Covariance Structure of Reading, Intelligence and Memory in Children [PDF]
This study investigates the genetic relationship among reading performance, IQ, verbal and visuospatial working memory (WM) and short-term memory (STM) in a sample of 112, 9-year-old twin pairs and their older siblings.
A Baddeley +56 more
core +5 more sources
Symptoms of major depression: Their stability, familiality, and prediction by genetic, temperamental, and childhood environmental risk factors [PDF]
Background: Psychiatry has long sought to develop biological diagnostic subtypes based on symptomatic differences. This effort assumes that symptoms reflect, with good fidelity, underlying etiological processes.
Aggen, Steven H., Kendler, Kenneth S.
core +2 more sources
Congenital Chloride Diarrhea in Dizygotic Twins [PDF]
Congenital chloride diarrhea (CLD) is a rare inherited autosomal recessive disorder. Mutations of the solute carrier family 26 member 3 gene cause profuse, chloride ion rich diarrhea, which results in hypochloremia, hyponatremia and metabolic alkalosis with dehydration. If a fetal ultrasound shows bowel dilatation suggestive of bowel obstruction, or if
Seo, Kyung Ah +7 more
openaire +2 more sources

