1.Lanostane Triterpenoids from Ganoderma tropicum Collected in Vietnam and Their Nitroblue Tetrazolium Reductive Activity In Vitro
Nguyen Thi DUYEN ; Nguyen Minh KHOI ; Phan Nguyen TRUONG THANG ; Duong Minh TAN ; Tran Viet HUNG ; Do Thi HA
Natural Product Sciences 2020;26(4):334-339
A new compound, 3β-acetoxylanosta-7,9(11),24-triene-26-al (3), and seven known compounds (1 – 2 and 4 – 8) were isolated from Ganoderma tropicum (Jung.) Bres. collected in Tay Nguyen, Vietnam. The structures of these compounds were determined by one- and two-dimensional nuclear magnetic resonance spectroscopy, electrospray ionization mass spectrometry (ESI-MS), and high-resolution ESI-MS, and by comparison with literature data. All of the isolated compounds were tested for nitroblue tetrazolium (NBT) reduction activity in Saccharomyces cerevisiae-stimulated RAW 246.7 cells. Among them, compounds 2 – 4 and 6 – 8 enhanced the NBT reduction in a dose-dependent manner.
2.Lanostane Triterpenoids from Ganoderma tropicum Collected in Vietnam and Their Nitroblue Tetrazolium Reductive Activity In Vitro
Nguyen Thi DUYEN ; Nguyen Minh KHOI ; Phan Nguyen TRUONG THANG ; Duong Minh TAN ; Tran Viet HUNG ; Do Thi HA
Natural Product Sciences 2020;26(4):334-339
A new compound, 3β-acetoxylanosta-7,9(11),24-triene-26-al (3), and seven known compounds (1 – 2 and 4 – 8) were isolated from Ganoderma tropicum (Jung.) Bres. collected in Tay Nguyen, Vietnam. The structures of these compounds were determined by one- and two-dimensional nuclear magnetic resonance spectroscopy, electrospray ionization mass spectrometry (ESI-MS), and high-resolution ESI-MS, and by comparison with literature data. All of the isolated compounds were tested for nitroblue tetrazolium (NBT) reduction activity in Saccharomyces cerevisiae-stimulated RAW 246.7 cells. Among them, compounds 2 – 4 and 6 – 8 enhanced the NBT reduction in a dose-dependent manner.
3.Rediscover a Missed Culprit Lesion with Optical Coherence Tomography in Acute Coronary Syndrome: a Simple Stationary Pullback Method
Bino John SAHAYO ; Sundeep MISHRA ; Sang-Wook KIM ; Arvind DAMBALKAR ; Quang Tan PHAN ; Hoyoun WON ; Jun Hwan CHO ; Wang Soo LEE
Korean Circulation Journal 2020;50(11):1043-1044
4.Trichoderma asperellum Chi42 Genes Encode Chitinase.
Nguyen Hoang LOC ; Hoang Tan QUANG ; Nguyen Bao HUNG ; Nguyen Duc HUY ; Truong Thi Bich PHUONG ; Tran Thi Thu HA
Mycobiology 2011;39(3):182-186
Four Trichoderma strains (CH2, SH16, PQ34, and TN42) were isolated from soil samples collected from Quang Tri and Thua Thien Hue provinces in Vietnam. The strains exhibited high chitinolytic secretion. Strain PQ34 formed the largest zone of chitinase-mediated clearance (> 4 cm in diameter) in agar containing 1% (w/v) colloidal chitin. Analysis of the internal transcribed spacer regions of these strains indicated that they were Trichoderma asperellum. The molecular weights of the chitinases were approximately 42 kDa. Chitinase genes (chi42) of T. asperellum strains TN42, CH2, SH16, and PQ34 were 98~99% homologous to the ech42 gene of T. harzianum CB-Pin-01 (accession No. DQ166036). The deduced amino acid sequences of both T. asperellum strains SH16 and TN42 shared 100% similarity.
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5.Zika preparedness and response in Viet Nam
Dong T Nguyen ; Hung T Do ; Huy X Le ; Nghia T Le ; Mai Q Vien ; Trieu B Nguyen ; Lan T Phan ; Thuong V Nguyen ; Quang C Luong ; Hung C Phan ; Hai T Diep ; Quang D Pham ; Thinh V Nguyen ; Loan KT Huynh ; Dung CT Nguyen ; Hang TT Pham ; Khanh KH Ly ; Huong NLT Tran ; Phu D Tran ; Tan Q Dang ; Hung Pham ; Long N Vu ; Anthony Mounts ; S Arunmozhi Balajee ; Leisha D Nolen
Western Pacific Surveillance and Response 2018;9(2):1-3
This article describes Viet Nam Ministry of Health’s (VMoH) activities to prepare for and respond to the threat Zika virus (ZIKV), including the adaptation of existing surveillance systems to encompass ZIKV surveillance.