Fu Peng1, Feng Wan2, Liang Xiong2, Cheng Peng3, Min Dai4, Jianping Chen1. 1. School of Chinese Medicine, University of Hong Kong, Hong Kong, China. 2. Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 610075, China; Chengdu Huasun Group Inc. Ltd., Chengdu, Sichuan 610075, China. 3. Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 610075, China. Email: pengchengchengdu@126.com. 4. Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 610075, China; Chengdu Medical College, Chengdu, Sichuan 610500, China.
Abstract
BACKGROUND: Our pervious antibacterial studies on several traditional Chinese medicines have found that Patchouli oil from Pogostemon cablin had significant antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA), which has spread worldwide and infected innumerable people. In order to find the more active natural substances in Patchouli oil, one of the major components, Pogostone, was isolated and its antibacterial activity was evaluated in vitro and in vivo in this study. METHODS: In vitro test, Pogostone was screened for antimicrobial properties against 83 bacteria comprising 35 gram positive and 48 gram negative bacteria strains via the agar double dilution method. In vivo test, specific pathogen free (SPF) strain of both male and female white Kunming mice, weighing 18-22 g, were used to test the protective ability of Pogostone after being injected with the median lethal doses (MLDs) of the tested strains. RESULTS: In vitro test, Pogostone could inhibit both gram negative bacteria (0.098-1 600 µg/ml) and gram positive bacteria (0.098-800 µg/ml). For Corynebacterium xerosis and some Chryseobacterium indologenes, the minimum inhibitory concentration (MIC) values of Pogostone were extremely low (<0.098 µg/ml). It was significant that Pogostone was also active against some drug-resistant bacteria like MRSA. Furthermore, Pogostone showed antibacterial activity in vivo against Escherichia coli (E. coli) and MRSA via intraperitoneal injection. Ninety percent of the mice infected with E. coil could be protected at the concentrations of 50 and 100 mg/kg, and 60% of the mice at 25 mg/kg, while the rate of protection for the mice infected with MRSA was 60% and 50% at doses of 100 and 50 mg/kg, respectively. CONCLUSION: Pogostone could be developed as a potential antibacterial agent for clinical therapy.
BACKGROUND: Our pervious antibacterial studies on several traditional Chinese medicines have found that Patchouli oil from Pogostemon cablin had significant antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA), which has spread worldwide and infected innumerable people. In order to find the more active natural substances in Patchouli oil, one of the major components, Pogostone, was isolated and its antibacterial activity was evaluated in vitro and in vivo in this study. METHODS: In vitro test, Pogostone was screened for antimicrobial properties against 83 bacteria comprising 35 gram positive and 48 gram negative bacteria strains via the agar double dilution method. In vivo test, specific pathogen free (SPF) strain of both male and female white Kunming mice, weighing 18-22 g, were used to test the protective ability of Pogostone after being injected with the median lethal doses (MLDs) of the tested strains. RESULTS: In vitro test, Pogostone could inhibit both gram negative bacteria (0.098-1 600 µg/ml) and gram positive bacteria (0.098-800 µg/ml). For Corynebacterium xerosis and some Chryseobacterium indologenes, the minimum inhibitory concentration (MIC) values of Pogostone were extremely low (<0.098 µg/ml). It was significant that Pogostone was also active against some drug-resistant bacteria like MRSA. Furthermore, Pogostone showed antibacterial activity in vivo against Escherichia coli (E. coli) and MRSA via intraperitoneal injection. Ninety percent of the mice infected with E. coil could be protected at the concentrations of 50 and 100 mg/kg, and 60% of the mice at 25 mg/kg, while the rate of protection for the mice infected with MRSA was 60% and 50% at doses of 100 and 50 mg/kg, respectively. CONCLUSION:Pogostone could be developed as a potential antibacterial agent for clinical therapy.
Authors: Y F Xu; D W Lian; Y Q Chen; Y F Cai; Y F Zheng; P L Fan; W K Ren; L J Fu; Y C Li; J H Xie; H Y Cao; B Tan; Z R Su; P Huang Journal: Antimicrob Agents Chemother Date: 2017-05-24 Impact factor: 5.191
Authors: H P S Abdul Khalil; Syaifullah Muhammad; Esam Bashir Yahya; Lee Kar Mun Amanda; Suriani Abu Bakar; C K Abdullah; Abd Rahim Aiman; M Marwan; Samsul Rizal Journal: Gels Date: 2022-08-26