04. Trường Đại học Khoa học tự nhiên (University of Science)
Tài nguyên nội sinh
Các bộ sưu tập số Luận văn Thạc sĩ, Luận án Tiến sĩ, Đề tài Báo cáo khoa học… của Thư viện Trường ĐH. Khoa học tự nhiên – ĐHQG-HCM được xây dựng nhằm hỗ trợ cho hoạt động giảng dạy và nghiên cứu của Nhà trường.
Duyệt 04. Trường Đại học Khoa học tự nhiên (University of Science) theo Chủ đề "8-hydroxyquinolin"
- Ấn phẩmAntifungal activity of oxidative damaging agents in combination with metal cations against Trichophyton rubrum isolated from a dermatological patient(Viện Công nghệ sinh học, Viện Hàn lâm Khoa học và Công nghệ Việt Nam, 2022-09) Tran, Cam Van; Nguyen, Thi Nguyet; Nguyen, Xuan Thu; Nguyen, Thi Mai PhuongTrichophyton rubrum is a causative agent responsible for human chronic dermatophytosisworlwide. It is a common causative agent of the dermatophyte infections and resistant to manyantifungal drugs. Oxidative damaging agents belong to a strong antimicrobial group and have beenintensively investigated. The synergistic oxidative damage can occur if the agents react with metalcations. Therefore, in this study the antifungal activity of formulas containing the two oxidativedamaging agents, including hydrogen peroxide (H2O2) and 8-hydroxyquinoline (8HQ), incombination with metal cations has been determined to examine the synergistic damage in T. rubrumisolated from the skin of a dermatological patient. The isolate was identified by morphologyobservations, biochemical tests and sequence analysis of ITS1 -4 gene, in comparison with the similarITS nucleotide sequences of others. The obtained results showed that the isolated fungal strain hadphysiological and biochemical characteristics of T. rubrum with more than 99% identity of the T.rubrum CBS 392.58 ITS sequence with OL347577 accession numbers. The antifungal tests indicatedthat the combinations of 2 mM Cu2+ + 0.05% H2O2; 2 mM Cu2++ 0.005% 8HQ; 2 mM Cu2+ + 0.005%8HQ + 0.05% H2O2 exerted the best antifungal activity against the isolated T. rubrum with thediameter of inhibition zones of 22, 25 and 28 mm, respectively. Among the combinations containingZn2+, the only formula of 2 mM Zn2+ + 0.05% H2O2 exhibited the desired effect, while thecombinations containing Fe2+ did not show any activity. Thus, our study suggested a potential use ofCu2+ + 0.05% H2O2; 2 mM Cu2++ 0.005% 8HQ and 2 mM Cu2+ + 0.005% 8HQ + 0.05% H2O2formulas as new potential antifungal agents against T. rubrum due to their synergistic oxidativedamage.