Asset Details
Do you wish to reserve the book?
Pathogenesis of Placental Site Trophoblastic Tumor May Require the Presence of a Paternally Derived X Chromosome
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Pathogenesis of Placental Site Trophoblastic Tumor May Require the Presence of a Paternally Derived X Chromosome
Do you wish to request the book?
Pathogenesis of Placental Site Trophoblastic Tumor May Require the Presence of a Paternally Derived X Chromosome
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Pathogenesis of Placental Site Trophoblastic Tumor May Require the Presence of a Paternally Derived X Chromosome
2000
Overview
Placental site trophoblastic tumor (PSTT) is a neoplastic proliferation of intermediate trophoblasts that invades the myometrium at the placental site after a pregnancy. Less than 100 cases have been reported. Information of the sex assignment of the antecedent gestation is available in 21 cases: 18 of these were female. To explore this interesting phenomenon, we have determined the sex chromosome composition of the tumor tissue preserved in paraffin blocks for five new cases of this condition. The last documented gestational event included a normal vaginal delivery of female infants in three cases, normal vaginal delivery of an infant of unknown sex in one case and a molar gestation in one case. Using the X-linked human androgen receptor (AR) gene as a polymorphic marker, we showed that in all five cases the tumor had a likely XX chromosomal composition; and in four cases it was possible to determine that one of the X chromosomes was of paternal origin. In one case, the paternal X chromosome showed no polymorphism to either maternal X chromosomes. In addition, sensitive semi-nested PCR failed to show a human Y chromosome element in any of the five cases of PSTT. Overall, of 21 cases from the literature and 5 cases of ours, 89% (23 of 26) showed an XX genomic composition in PSTT, either by history or genetic analysis. These results suggest that most PSTT were derived from the antecedent female conceptus and were likely to have possessed a functional paternal X chromosome. Methylation status analysis at the AR locus was performed in the three PSTT in which the paternal X chromosome was identifiable. In two cases, the paternal AR locus was hypomethylated while the corresponding maternal locus was hypermethylated. The methylation status of other loci was not investigated. Collectively, sex chromosome analysis of five cases of PSTT with literature support suggests a unique genetic basis for the development of PSTT that involves the paternal X chromosome. Although largely speculative, an active paternal X chromosome may be of importance in the pathogenesis of PSTT.
Publisher
Elsevier Inc,Nature Publishing Group US,Nature Publishing,Nature Publishing Group
Subject
/ Biological and medical sciences
/ Diseases of mother, fetus and pregnancy
/ Female
/ Gynecology. Andrology. Obstetrics
/ Humans
/ Male
/ Medicine
/ MEDLINE
/ Receptors, Androgen - genetics
/ Trophoblastic Neoplasms - genetics
/ Trophoblastic Neoplasms - pathology
/ Uterine Neoplasms - genetics
