Expression of endothelin receptors in human myometrium during pregnancy and in uterine leiomyomas. 2000

J C Honoré, and B Robert, and M C Vacher-Lavenu, and C Chapron, and M Breuiller-Fouché, and F Ferré
National Institute of Health and Medical Research INSERM U.361, Paris, France.

The distribution of mRNAs for endothelinA and B (ET(A) and ET(B)) receptors and their binding properties was studied in human nonpregnant and pregnant term myometrium and in uterine leiomyomas. ET(A)- and ET(B)-receptors functionally coupled to phospholipase C (PLC) coexisted in myometrial tissues, but only the functional ET(A)-receptor subtype was detected in leiomyomas. ET(A)-receptor mRNA and three other spliced variants were distributed in all tissue studied. We reported an increase in the proportion of ET(A)-receptors coupled to PLC in term pregnant myometrium when compared to nonpregnant tissue. These results suggest that upregulation of the myometrial ET(A)-receptors may account for or contribute to the control of normal development and growth of human myometrium during pregnancy. They also support a pathological role for the endothelin-1 (ET-1)/ET(A)-receptor system in leiomyoma development.

UI MeSH Term Description Entries
D007211 Indoles Benzopyrroles with the nitrogen at the number one carbon adjacent to the benzyl portion, in contrast to ISOINDOLES which have the nitrogen away from the six-membered ring.
D007889 Leiomyoma A benign tumor derived from smooth muscle tissue, also known as a fibroid tumor. They rarely occur outside of the UTERUS and the GASTROINTESTINAL TRACT but can occur in the SKIN and SUBCUTANEOUS TISSUE, probably arising from the smooth muscle of small blood vessels in these tissues. Fibroid,Fibroid Tumor,Fibroid Uterus,Fibroids, Uterine,Fibroma, Uterine,Fibromyoma,Leiomyoma, Uterine,Fibroid Tumors,Fibroid, Uterine,Fibroids,Fibromas, Uterine,Fibromyomas,Leiomyomas,Tumor, Fibroid,Tumors, Fibroid,Uterine Fibroid,Uterine Fibroids,Uterine Fibroma,Uterine Fibromas,Uterus, Fibroid
D009215 Myometrium The smooth muscle coat of the uterus, which forms the main mass of the organ. Uterine Muscle,Muscle, Uterine,Muscles, Uterine,Uterine Muscles
D009842 Oligopeptides Peptides composed of between two and twelve amino acids. Oligopeptide
D010880 Piperidines A family of hexahydropyridines.
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001381 Azepines Seven membered heterocyclic rings containing a NITROGEN atom. Hexamethyleneimines
D012333 RNA, Messenger RNA sequences that serve as templates for protein synthesis. Bacterial mRNAs are generally primary transcripts in that they do not require post-transcriptional processing. Eukaryotic mRNA is synthesized in the nucleus and must be exported to the cytoplasm for translation. Most eukaryotic mRNAs have a sequence of polyadenylic acid at the 3' end, referred to as the poly(A) tail. The function of this tail is not known for certain, but it may play a role in the export of mature mRNA from the nucleus as well as in helping stabilize some mRNA molecules by retarding their degradation in the cytoplasm. Messenger RNA,Messenger RNA, Polyadenylated,Poly(A) Tail,Poly(A)+ RNA,Poly(A)+ mRNA,RNA, Messenger, Polyadenylated,RNA, Polyadenylated,mRNA,mRNA, Non-Polyadenylated,mRNA, Polyadenylated,Non-Polyadenylated mRNA,Poly(A) RNA,Polyadenylated mRNA,Non Polyadenylated mRNA,Polyadenylated Messenger RNA,Polyadenylated RNA,RNA, Polyadenylated Messenger,mRNA, Non Polyadenylated

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