PMID- 16406414 OWN - NLM STAT- MEDLINE DCOM- 20061222 LR - 20060329 IS - 0378-8741 (Print) IS - 0378-8741 (Linking) VI - 105 IP - 1-2 DP - 2006 Apr 21 TI - Anti-HIV-1 protease- and HIV-1 integrase activities of Thai medicinal plants known as Hua-Khao-Yen. PG - 312-5 AB - Ethanolic- and water extracts from five species of Thai medicinal plants known as Hua-Khao-Yen were tested for their inhibitory effects against HIV-1 protease (HIV-PR) and HIV-1 integrase (HIV-1 IN). The result revealed that the ethanolic (EtOH) extract of Smilax corbularia exhibited anti-HIV-1 IN activity with an IC50 value of 1.9 microg/ml, followed by the water extract of Dioscorea birmanica (IC50 = 4.5 microg/ml), the EtOH extract of Dioscorea birmanica (IC50 = 4.7 microg/ml), the water extract of Smilax corbularia (IC50 = 5.4 microg/ml), the EtOH extract of Smilax glabra (IC50 = 6.7 microg/ml) and the water extract of Smilax glabra (IC50 = 8.5 microg/ml). The extracts of Pygmaeopremna herbacea and Dioscorea membranacea were apparently inactive (IC50 > 100 microg/ml). Interestingly, only the EtOH extract of Dioscorea membranacea showed appreciable activity (IC50 = 48 microg/ml) against HIV-1 PR, while the other extracts possessed mild activity. This result strongly supported the basis for the use of Smilax corbularia and Dioscorea membranacea for AIDS treatment by Thai traditional doctors. FAU - Tewtrakul, Supinya AU - Tewtrakul S AD - Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand. supinya.t@psu.ac.th FAU - Itharat, Arunporn AU - Itharat A FAU - Rattanasuwan, Pranee AU - Rattanasuwan P LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060106 PL - Ireland TA - J Ethnopharmacol JT - Journal of ethnopharmacology JID - 7903310 RN - 0 (DNA Primers) RN - 0 (HIV Integrase Inhibitors) RN - 0 (HIV Protease Inhibitors) RN - 0 (Plant Extracts) RN - EC 2.7.7.- (HIV Integrase) RN - EC 3.4.23.- (HIV Protease) SB - IM MH - Base Sequence MH - DNA Primers MH - HIV Integrase/*drug effects MH - HIV Integrase Inhibitors/*pharmacology MH - HIV Protease/*drug effects MH - HIV Protease Inhibitors/*pharmacology MH - Plant Extracts/*pharmacology MH - *Plants, Medicinal/chemistry/classification MH - Species Specificity EDAT- 2006/01/13 09:00 MHDA- 2006/12/23 09:00 CRDT- 2006/01/13 09:00 PHST- 2005/08/12 00:00 [received] PHST- 2005/10/19 00:00 [revised] PHST- 2005/11/14 00:00 [accepted] PHST- 2006/01/13 09:00 [pubmed] PHST- 2006/12/23 09:00 [medline] PHST- 2006/01/13 09:00 [entrez] AID - S0378-8741(05)00770-1 [pii] AID - 10.1016/j.jep.2005.11.021 [doi] PST - ppublish SO - J Ethnopharmacol. 2006 Apr 21;105(1-2):312-5. doi: 10.1016/j.jep.2005.11.021. Epub 2006 Jan 6.