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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1996-3-6
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pubmed:abstractText |
The role of nitric oxide in the uterotrophic action of oestradiol after 6 h or 72 h was studied in immature (19-21 days old) female Wistar rats by use of L-arginine, the amino acid from which nitric oxide is synthesized, and N omega-nitro-L-arginine methyl ester (L-NAME), an inhibitor of nitric oxide synthase. Oestradiol at single s.c. doses of 2.5, 5.0 and 10.0 micrograms per rat induced dose-dependent uterine oedema in 6 h. L-NAME (10 and 20 mg kg-1, i.p.) administered 30 min before oestradiol (10 micrograms per rat) injection suppressed the formation of uterine oedema in a dose-related manner. This action of L-NAME on oestradiol-induced uterine oedema was effectively blocked by pretreatment of rats with L-arginine (600 mg kg-1, s.c.), a precursor of nitric oxide, but not by L-lysine, an amino acid not involved in the generation of nitric oxide. In addition, L-NAME at similar doses significantly prevented oestradiol-induced (3 micrograms per rat, s.c. on three successive days) increases in uterine growth after 72 h; however, this effect was mitigated by L-arginine (600 mg kg-1). These results suggest the involvement of an L-arginine-nitric oxide system in the oestradiol-induced uterotrophic effect in immature rats.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Nov
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pubmed:issn |
0022-4251
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
105
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
303-6
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:8568775-Animals,
pubmed-meshheading:8568775-Arginine,
pubmed-meshheading:8568775-Cell Division,
pubmed-meshheading:8568775-Epithelial Cells,
pubmed-meshheading:8568775-Estradiol,
pubmed-meshheading:8568775-Female,
pubmed-meshheading:8568775-NG-Nitroarginine Methyl Ester,
pubmed-meshheading:8568775-Nitric Oxide Synthase,
pubmed-meshheading:8568775-Rats,
pubmed-meshheading:8568775-Rats, Wistar,
pubmed-meshheading:8568775-Regional Blood Flow,
pubmed-meshheading:8568775-Uterus
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pubmed:year |
1995
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pubmed:articleTitle |
Nitric oxide synthase inhibition and the uterotrophic response to oestrogen in immature rats.
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pubmed:affiliation |
Departamento de Fisiologia e Farmacologia, Universidade Federal do Ceará, Fortaleza, Ce, Brazil.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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