ArticleInternational journal of molecular sciences2024
In Vitro Effect of Estrogen and Progesterone on Cytogenetic Profile of Uterine Leiomyomas.
Article in International journal of molecular sciences, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
In the present study, we aimed to investigate intratumoral karyotype diversity as well as the estrogen/progesterone effect on the cytogenetic profile of uterine leiomyomas (ULs). A total of 15 UL samples obtained from 15 patients were cultured in the media supplemented with estrogen and/or progesterone and without adding hormones. Conventional cytogenetic analysis of culture samples revealed clonal chromosomal abnormalities in 11 out of 15 ULs. Cytogenetic findings were presented by simple and complex chromosomal rearrangements (64% and 36% of cases, respectively) verified through FISH and aCGH. In most ULs with complex chromosomal rearrangements, the breakpoints did not feature clusterization on a single chromosome but were evenly distributed across rearranged chromosomes. The number of breakpoints showed a strong positive correlation with the number of rearranged chromosomes. Moreover, both abovementioned parameters were in a linear dependency from the number of karyotypically different clones per UL. This suggests that complex chromosomal rearrangements in ULs predominantly originate through sequential events rather than one hit. The results of UL cytogenetic analysis depended on the presence of estrogen and/or progesterone in the culture medium. The greatest variety of cytogenetically different cell clones was detected in the samples cultured without hormone supplementation. Their counterparts cultured with progesterone supplementation showed a sharp decrease in clone number, whereas such a decrease induced by estrogen or estrogen-progesterone supplementation was insignificant. These findings suggest that estrogen-progesterone balance is crucial for forming a UL cytogenetic profile, which, in turn, may underlie the unique response of the every karyotypically abnormal UL to medications.
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