Type 2 angiotensin II receptor is expressed in human myometrium and uterine leiomyoma and is down-regulated during pregnancy

The Journal of Clinical Endocrinology and Metabolism
T MatsumotoK Nakao

Abstract

Angiotensin II (Ang II) acts on at least two receptor subtypes, type 1 (AT1) and type 2 (AT2). The AT2 receptor is abundant in the fetus and decreases rapidly after birth. The uterus expresses the AT2 receptor abundantly even in adults, suggesting its role in reproduction. To explore the roles and regulation of the AT2 receptor in human uterus and to examine whether its expression is related to the proliferative characteristics of leiomyoma, we studied Ang II receptor gene expressions in nonpregnant and pregnant myometrium and in uterine leiomyomas obtained from patients who underwent gynecological surgery. Receptor binding studies revealed that all samples exhibited high-affinity binding for [Sar1, Ile5]Ang II, most (> 90%) of which was of the AT2 subtype. In nonpregnant myometrium (n = 5), receptor density [maximum binding capacity (Bmax)] and dissociation constant (Kd) for AT2-selective CGP42112A were 287 +/- 46 fmol/mg protein and 0.48 +/- 0.09 nM, respectively. In the myometrium of early (n = 6) and late pregnancy (n = 3), Bmax for the AT2 receptor was significantly decreased (62 +/- 17 and 25 +/- 6 fmol/mg protein, respectively). Furthermore, administration of combined oral contraceptive pills induced a comparable reducti...Continue Reading

Citations

Jan 7, 2009·Therapeutic Advances in Cardiovascular Disease·Lauren Anton, K Bridget Brosnihan
Jun 13, 2009·Endocrinology·Lauren AntonK Bridget Brosnihan
Apr 26, 2008·Biochemical Genetics·Azim NejatizadehM A Qadar Pasha
Sep 29, 2009·Clinical Biochemistry·Aleksandra StankovićDragan Alavantić
May 25, 2016·Current Obstetrics and Gynecology Reports·Nick Dalton-Brewer
Aug 15, 2000·Placenta·A H NielsenK Poulsen
Jul 17, 1998·Frontiers in Neuroendocrinology·A M Poisner

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.