Abstract
Objective: The truncated mitochondrial progesterone receptor (PR-M) is homologous to nuclear PRs with the exception of an amino terminus hydrophobic membrane localization sequence, which localizes PR-M to mitochondria. Given the matrilineal inheritance of both spontaneous preterm birth (SPTB) and the mitochondrial genome, we hypothesized that (a) PR-M is polymorphic and (b) PR-M localization sequence polymorphisms could result in variable progesterone-mitochondrial effects and variable responsiveness to progesterone prophylaxis. Methods: Secondary analysis of DNA from women enrolled in a multicenter, prospective, study of 17 alpha-hydroxyprogesterone caproate (17OHPC) versus placebo for the prevention of recurrent SPTB. DNA was extracted from stored saliva. Results: The PR-M localization sequence was sequenced on 344 patients. Sequences were compared with the previously published 48 base-pair sequence, and all were identical. Conclusions: We did not detect genetic variation in the mitochondrial localization sequence of the truncated PR-M in a group of women at high risk for SPTB.
Original language | English (US) |
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Pages (from-to) | 913-916 |
Number of pages | 4 |
Journal | Reproductive Sciences |
Volume | 17 |
Issue number | 10 |
DOIs | |
State | Published - Oct 2010 |
Keywords
- mitochondria
- prematurity
- progesterone
ASJC Scopus subject areas
- Obstetrics and Gynecology