- P-ISSN 1010-0695
- E-ISSN 2288-3339
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- P-ISSN1010-0695
- E-ISSN2288-3339
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Smooth Muscle Relaxation by an HerbalMedicine ssangwhatang associated with Nitric Oxide Synthase Activation and Nitric Oxide production
대한한의학회지 / Journal of Korean Medicine, (P)1010-0695; (E)2288-3339
2006, v.27 no.4, pp.78-87
(원광대학교)
(원광대학교)
(원광대학교)
(원광대학교)
(원광대학교)
(원광대학교)
(원광대학교)
(원광대학교)
(원광대학교)
(원광대학교)
(원광대학교)
김중길,
심하나,
이승희,
김동웅,
유관석,
&
송봉근.
(2006). . 대한한의학회지, 27(4), 78-87.
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Abstract
Ssanghwatang (SHT) has been known to prove effective in the treatment for erectile dysfunction (ED), and its modified formula is widely used in clinical practice. However, its fundamental mechanism of action is not clearly known. It is well known that endothelial cells can achieve the relaxation of vascular smooth muscles by the release of nitric oxide (NO). NO is synthesized by the enzyme NO synthase (NOS) from L-arginine and oxygen. It is widely accepted that NO plays an important role in the relaxation of corpus cavernous smooth muscle and vasculature. In addition, in terms of the penile erection, the NO/cGMP pathway is more potent than the PGE1 /cAMP pathway. The main purpose of the present study was to investigate the mechanism of the erectile effects of SHT by focusing on its direct effects on corpus cavernous smooth muscle cells. We investigated the NOS activity, nitrite concentration and cGMP levels in rat corpus cavernous smooth muscle cell lines activated by SHT extracts. Furthermore, we evaluated the effect of SHT extracts on penile smooth muscle relaxation following oral administration of SHT extract powder to rats by the dosage of 1 g/kg over fifteen days. As a result, we found that SHT stimulated NO release. NOS activity and cGMP levels were increased by SHT respectively. Furthermore, SHT relaxed the corpus cavernous smooth muscle. These results are consistent with the concept that penile erection by SHT is carried out through the NO/cGMP pathway. In conclusion, the present study shows that SHT increases the NOS activity, synthesizes NO and augments the cGMP, which mediates penile erection. Further determination of the SHT mechanism related with the NO/cGMP pathway strongly indicates that SHT can be used as a remedy for erectile impotence.
- keywords
- Ssanghwatang, smooth muscle relaxation, nitric oxide, penile erection, cGMP
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