PMID- 23649256 OWN - NLM STAT- MEDLINE DCOM- 20131231 LR - 20130523 IS - 1347-6947 (Electronic) IS - 0916-8451 (Linking) VI - 77 IP - 5 DP - 2013 TI - Nitric oxide induces vascular endothelial growth factor expression in the rat placenta in vivo and in vitro. PG - 971-6 AB - We investigated the role of nitric oxide (NO) in vascular endothelial growth factor (VEGF) expression in the rat placenta. A nitric oxide synthase (NOS) inhibitor, N(G)-nitro-L-arginine-methyl ester (L-NAME), was constantly infused into pregnant rats 6-24 h before sacrifice on gestational day (GD) 15.5. NO production declined to about 15% of the control level as monitored by NO trapping and electron paramagnetic resonance spectroscopy. VEGF mRNA expression was temporally decreased by L-NAME, but recovered to normal levels after 24 h of treatment, whereas hypoxia inducible factor (HIF)-1alpha and induced NOS (iNOS) expression increased. VEGF expression decreased significantly in placental explants after 6 h of co-treatment with L-NAME and lipopolysaccharide, an iNOS inducer. Our data indicate that NO induce VEGF expression in vivo and in vitro in the rat placenta, suggesting that peaked NO production was maintained by a reciprocal relationship between NO and VEGF via HIF-1alpha. FAU - Abe, Hideaki AU - Abe H AD - Graduate School of Veterinary Medicine, Azabu University, Fuchinobe, Chuo-ku, Sagamihara, Japan. FAU - Ishikawa, Wataru AU - Ishikawa W FAU - Kushima, Takahiro AU - Kushima T FAU - Nishimura, Tomoka AU - Nishimura T FAU - Mori, Chiemi AU - Mori C FAU - Onuki, Atsushi AU - Onuki A FAU - Suzuki, Takehito AU - Suzuki T FAU - Ishii, Yasuo AU - Ishii Y FAU - Kansaku, Norio AU - Kansaku N FAU - Miyazaki, Yoko AU - Miyazaki Y FAU - Tanaka, Kazuaki AU - Tanaka K FAU - Morita, Hidetoshi AU - Morita H FAU - Takizawa, Tatsuya AU - Takizawa T LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130507 PL - England TA - Biosci Biotechnol Biochem JT - Bioscience, biotechnology, and biochemistry JID - 9205717 RN - 0 (Hif1a protein, rat) RN - 0 (Hypoxia-Inducible Factor 1, alpha Subunit) RN - 0 (Vascular Endothelial Growth Factor A) RN - 31C4KY9ESH (Nitric Oxide) RN - EC 1.14.13.39 (Nitric Oxide Synthase Type II) RN - EC 2.7.10.1 (Vascular Endothelial Growth Factor Receptor-1) RN - EC 2.7.10.1 (Vascular Endothelial Growth Factor Receptor-2) RN - V55S2QJN2X (NG-Nitroarginine Methyl Ester) SB - IM MH - Animals MH - Female MH - Gene Expression Regulation/*drug effects MH - Hypoxia-Inducible Factor 1, alpha Subunit/genetics MH - NG-Nitroarginine Methyl Ester/pharmacology MH - Nitric Oxide/*pharmacology MH - Nitric Oxide Synthase Type II/genetics MH - Placenta/*drug effects/*metabolism MH - Pregnancy MH - Rats MH - Rats, Wistar MH - Vascular Endothelial Growth Factor A/*genetics MH - Vascular Endothelial Growth Factor Receptor-1/genetics MH - Vascular Endothelial Growth Factor Receptor-2/genetics EDAT- 2013/05/08 06:00 MHDA- 2014/01/01 06:00 CRDT- 2013/05/08 06:00 PHST- 2013/05/08 06:00 [entrez] PHST- 2013/05/08 06:00 [pubmed] PHST- 2014/01/01 06:00 [medline] AID - DN/JST.JSTAGE/bbb/120923 [pii] AID - 10.1271/bbb.120923 [doi] PST - ppublish SO - Biosci Biotechnol Biochem. 2013;77(5):971-6. doi: 10.1271/bbb.120923. Epub 2013 May 7.