Fluorescent in situ hybridization (FISH) for HER2 performed on paraffin-embedded tissue samples and immunohistochemical analysis for p57 may be useful ancillary studies to aid in the diagnosis and classification of hydatidiform moles (HMs). HER2 FISH was validated against 24 paraffin-embedded sections of HMs and hydropic abortions and showed an 85% concordance rate. A morphologic assessment bas...

We present genome-wide definitive haplotypes, determined using a collection of 74 Japanese complete hydatidiform moles, each carrying a genome derived from a single sperm. The haplotypes incorporate 281,439 common SNPs, genotyped with a high throughput array-based oligonucleotide hybridization technique. Comparison of haplotypes inferred from pseudoindividuals (constructed from randomized mole ...

The present study was undertaken to assess the metabolism of radiolabeled pregnenolone in the placenta throughout pregnancy in organ culture. The product generated from pregnenolone was only progesterone regardless of the weeks of gestation. The amount of progesterone formed by the placenta was 5.60 +/- 0.15 x 10(-11) moles/mg protein/hour in the 1st trimester (n = 4), 6.47 +/- 0.09 x 10(-11) m...

A review of gestational trophoblastic disease diagnosed at the Department of Pathology, University Hospital, Kuala Lumpur from January 1989 to December 1990 using established histological criteria showed 25 complete hydatidiform moles (CHM), 11 partial hydatidiform moles (PHM), 1 invasive mole and 2 choriocarcinoma. The ages of the patients with CHM ranged from 21 to 43 years (mean = 28.5 years...

Maternal effect genes control early events of embryogenesis. Maternal homozygous and compound mutations in two such genes, NLRP7 and c6orf221, have been detected in the majority of women experiencing recurrent biparental hydatidiform moles. It was suggested that other forms of reproductive wastage, including diploid androgenetic moles, partial moles, polyploidy, recurrent spontaneous abortions ...

Hydatidiform mole is an aberrant pregnancy with abnormal embryonic development and hydropic placental villi. Common moles are sporadic, not recurrent and affect one in every 1500 pregnancies in Western societies. Approximately, half of common moles are complete and mostly diploid androgenetic, whereas the remaining are partial and mostly triploid diandric. NLRP7 has been found to be responsible...

Hydatidiform moles (HMs) most often occur sporadically and are either diploid androgenetic or triploid. The very rare familial recurrent HMs (FRHMs) have been related to NLRP7 and C6orf221 mutations in the mother. FRHMs are most often diploid with both maternal and paternal origin of the molar genome. We have screened a cohort of 11 women with diploid HMs with biparental contributions to the mo...

Two sialic acids were isolated from the jelly coat of the eggs of the sea urchin Pseudocentrotus depressus. Both were subjected to chemical assay, thin layer chromatography, infrared absorption study, and enzymatic treatment. The results indicate that one of the sialic acids is identical with N-glycolylneuraminic acid. The other sialic acid is a completely new type and was deduced to be N-aceto...