Our findings argue for a hereditary component of pyloric stenosis: (1) pre-dominance in boys; (2) familial aggre-gation in first-, second-, and third-degree relatives; (3) high concordance rate in monozygotic twins; (4) similar degree of aggregation in dizygotic
twins and siblings; (5) difference in risk for siblings vs.
There were 428 monozygotic (MZ) female, 165 MZ male, 218 dizygotic
(DZ) female, 90 DZ male, and 222 DZ opposite-sex pairs, and 356 female and 230 male individuals whose co-twin did not participate.
Cholinesterase results were obtained for 2237 samples, including 564 complete monozygotic and 518 dizygotic
Among the same-sex pairs, about half are identical, or monozygotic (MZ) twins and half are fraternal, or dizygotic
Titers of ASCA were not similar within discordant mono- or dizygotic
twin pairs with Crohn's disease.
Don't be fooled into thinking that twins conceived through assisted reproductive technology (ART) necessarily are dichorionic, dizygotic
twins, said Dr.
In addition, rates of alcohol dependence are much higher in monozygotic than in dizygotic
co-twins of alcohol-dependent twins.
The study included data from 1,797 twins, including 634 twin pairs (437 monozygotic, 150 dizygotic
and 47 indeterminate pairs) and 529 individual twins with a mean age of 36.
Murray and his associates looks at the concordance rate for three psychiatric disorders in a total of 222 monozygotic or dizygotic
The researchers also plan to study its effect in twins, by enrolling 24 monozygotic twins discordant for ADHD and 24 dizygotic
twins discordant for ADHD.
However, the extent to which baseline concentrations of CRP and SAA are genetically determined is of considerable interest, and we report here, for the first time, values in large well-matched cohorts of monozygotic (MZ) and dizygotic
A survey of 1,018 dizygotic
and 922 monozygotic twin pairs participating in a English national adult twin registry indicated that 28% of monozygotic twin pairs shared symptoms of gastroesophageal reflux disease (GERD).