| Expression of pituitary adenylate cyclase activating peptide in the uterine cervix, lumbosacral dorsal root ganglia and spinal cord of rats during pregnancy. | |
| | |
MedLine Citation:
|
PMID: 16181705 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The uterine cervix is highly innervated by the sensory nerves containing neuropeptides which change during pregnancy and are regulated, in part, by estrogen. These neuropeptides act as transmitters both in the spinal cord and cervix. The present study was undertaken to determine the expression pattern of the neuropeptide pituitary adenylate cyclase activating peptide (PACAP) in the cervix and its nerves during pregnancy and the influence of estrogen on this expression using immunohistochemistry, radioimmunoassay and RT-PCR. PACAP immunoreactivity was detected in nerves in the cervix, lumbosacral (L6-S1) dorsal root ganglia (DRG) and spinal cord. PACAP immunoreactivity was highest at day 15 of pregnancy in the cervix and dorsal spinal cord, but then decreased over the last trimester of pregnancy. However, levels of PACAP mRNA increased in the L6-S1 DRG at late pregnancy relative to early pregnancy. DRG of ovariectomized rats treated with estrogen showed increased PACAP mRNA synthesis in a dose-related manner, an effect partially blocked by the estrogen receptor (ER) antagonist ICI 182,780. We postulate that synthesis of PACAP in L6-S1 DRG and utilization in the cervix and spinal cord increase over pregnancy and this synthesis is the under influence of the estrogen-ER system. Since PACAP is expressed by sensory nerves and may have roles in nociception and vascular function, collectively, these data are consistent with the hypothesis that sensory nerve-derived neuronal factors innervate the cervix and play a role in cervical ripening. |
| | |
Authors:
|
R E Papka; M Workley; S Usip; C N Mowa; J Fahrenkrug |
Related Documents
:
|
6692015 - Uteroplacental vascular perfusion and blood flow during pregnancy in the guinea pig. 9006815 - Treatment of preterm cervical dilatation with glyceryl trinitrate, a nitric oxide donor. 15167815 - Dilation and evacuation at >or=20 weeks: comparison of operative techniques. 11234615 - Detection of cervical immunoglobulin a in normal pregnancy. 21749485 - Efficacy of ozone as a novel treatment option for urovagina in dairy cows. 3540705 - The fetal spine. |
Publication Detail:
|
Type: Journal Article; Research Support, N.I.H., Extramural Date: 2005-09-21 |
Journal Detail:
|
Title: Peptides Volume: 27 ISSN: 0196-9781 ISO Abbreviation: Peptides Publication Date: 2006 Apr |
Date Detail:
|
Created Date: 2006-04-03 Completed Date: 2006-08-11 Revised Date: 2007-11-14 |
Medline Journal Info:
|
Nlm Unique ID: 8008690 Medline TA: Peptides Country: United States |
Other Details:
|
Languages: eng Pagination: 743-52 Citation Subset: IM |
Affiliation:
|
Northeastern Ohio Universities College of Medicine, Department of Neurobiology, 4209 State Route 44, P.O. Box 95, Rootstown OH 44272, USA. rpapka@neoucom.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Cervix Uteri / metabolism* Female Ganglia, Spinal / metabolism* Gene Expression Regulation* Pituitary Adenylate Cyclase-Activating Polypeptide / genetics*, metabolism* Pregnancy RNA, Messenger Rats Spinal Cord / metabolism* Time Factors |
| Grant Support | |
ID/Acronym/Agency:
|
NS22526/NS/NINDS NIH HHS |
| Chemical | |
Reg. No./Substance:
|
0/Pituitary Adenylate Cyclase-Activating Polypeptide; 0/RNA, Messenger |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Development of an HL7 interface engine, based on tree structure and streaming algorithm, for large-s...
Next Document: A novel M-superfamily conotoxin with a unique motif from Conus vexillum.