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1. Prevalence, species distribution and antifungal susceptibility of Candida albicans causing vaginal discharge among symptomatic non-pregnant women of reproductive age at a tertiary care hospital, Vietnam

Author

Do Ngoc Anh, Dao Nguyen Hung, Tran Viet Tien, Vu Nhat Dinh, Vu Tung Son, Nguyen Viet Luong, Nguyen Thi Van, Nguyen Thi Nhu Quynh, Nguyen Van Tuan, Le Quoc Tuan, Nguyen Duy Bac, Nguyen Khac Luc, Le Tran Anh, and Do Minh Trung

Subjects
Prevalence, Vulvovaginal candidiasis, Reproductive age women, Antifungal susceptibility, Infectious and parasitic diseases, RC109-216
Abstract

Abstract Background Vaginal candidiasis is frequent in women of reproductive age. Accurate identification Candida provides helpful information for successful therapy and epidemiology study; however, there are very limited data from the Vietnam have been reported. This study was performed to determine the prevalence, species distribution of yeast causing vaginal discharge and antifungal susceptibility patterns of Candida albicans among symptomatic non-pregnant women of reproductive age. Methods Vaginal discharge samples were collected from 462 women of reproductive age in Hanoi, Vietnam between Sep 2019 and Oct 2020. Vaginal swabs from these patients were examined by direct microscopic examination (10% KOH). CHROMagar™ Candida medium and Sabouraud dextrose agar supplemented with chloramphenicol (0.5 g/l) were used to isolate yeast, and species identification was performed using morphological tests and molecular tools (PCR and sequencing). Antifungal susceptibility testing was determined according to the Clinical and Laboratory Standards Institute guidelines (M27-A3 and M27-S4). Results The prevalence of vaginal yeast colonization in non-pregnant women was 51.3% of 462 participants. Nine different yeast species were identified. Among these isolates, C. albicans (51.37%) was the most frequent, followed by C. parapsilosis (25.88%), C. glabrata (11.37%), C. tropicalis (4.31%), C. krusei (3.92%), C. africana (1.57%), Saccharomyces cerevisiae (0.78%), C. nivariensis (1 isolates, 0.39%), and C. lusitaniae (1 isolates, 0.39%), respectively. Among C. albicans, all 46 isolates were 100% susceptible to micafungin, caspofungin, and miconazole. The susceptibility rates to amphotericine B, 5-flucytosine, fluconazole, itraconazole and voriconazole were 95.65, 91.30, 91.30, 82.61 and 86.95%, respectively. Conclusions The prevalence of VVC among symptomatic non-pregnant women of reproductive age in Vietnam was higher than many parts of the world. The high frequency of non-albicans Candida species, which were often more resistant to antifungal agents, was a notable feature. Resistance rates of vaginal C. albicans isolates to antifungal agents was low. Our findings suggest that continued surveillance of changes in species distribution and susceptibility to antifungals should be routinely screened and treated.

Published
2021
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3. Biodegradation of DDT using multi‐species mixtures: From genome‐mining prediction to practical assessment.

Author

Vu, Phuong Ha, Nguyen, Dang Huy, Vu, Tung Son, Le, Anh Hien, Tran, Trang Quynh Thi, Nguyen, Yen Thi, Nguyen, Thuy Thu Thi, Mai, Linh Dam Thi, Bui, Ha Viet Thi, Tran, Hanh My, Nguyen, Huy Quang, Nguyen, Thao Kim Nu, Truong, Bao Gia, Tran, Huyen Thanh Thi, and Pham, Hai The

Subjects
MIXED culture (Microbiology), MICROBIAL cultures, AGRICULTURE, HUMAN ecology, DATABASES, DDT (Insecticide)
Abstract

DDT (dichlorodiphenyltrichloroethane) is a commonly used insecticide that is recalcitrant and highly stable in the environment. Currently, DDT residue contamination, especially in agricultural soil, is still a concern in many countries, threatening human health and the environment. Among the approaches to resolve such an issue, novel biodegradation‐based methods are now preferred to physicochemical methods, due to the sustainability and the effectiveness of the former. In this study, we explored the possibility of building mixed microbial cultures that can offer improved DDT‐degrading efficiencies and be more environmentally transilient, based on genome annotation using the KEGG database and prediction of interactions between single strains using the obtained metabolic maps. We then proposed 10 potential DDT‐degrading mixed cultures of different strain combinations and evaluated their DDT degradation performances in liquid, semi‐solid and solid media. The results demonstrated the superiority of the mixtures over the single strains in terms of degrading DDT, particularly in a semi‐solid medium, with up to 40–50% more efficiency. Not only did the mixed cultures degrade DDT more efficiently, but they also adapted to broader spectra of environmental conditions. The three best DDT‐degrading and transilient mixtures were selected, and it turned out that their component strains seemed to have more metabolic interactions than those in the other mixtures. Thus, our study demonstrates the effectiveness of exploiting genome‐mining techniques and the use of constructed mixed cultures in improving biodegradation. [ABSTRACT FROM AUTHOR]

Published
2024
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4. High Prevalence of Post-Traumatic Stress Disorder and Psychological Distress Among Healthcare Workers in COVID-19 Field Hospitals: A Cross-Sectional Study from Vietnam

Author

Tran, Ha Thi Thu, primary, Nguyen, Yen Hoang, additional, Vuong, Thuy Dinh, additional, Bui, Loi Van, additional, Doan, Hue Thi, additional, Le, Ha Thi Thu, additional, Cong Le, Thien, additional, Nguyen, Thai Quoc, additional, Do, Son Ngoc, additional, Nguyen, Phuong Doan, additional, Luong, Chinh Quoc, additional, Vu, Tung Son, additional, Tran, Son Nam, additional, Doan, Ngoc Bao, additional, Hoang, Long Bao, additional, and Nguyen, Tuan Van, additional

Published
2023
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5. High Prevalence of Post-Traumatic Stress Disorder and Psychological Distress Among Healthcare Workers in COVID-19 Field Hospitals: A Cross-Sectional Study from Vietnam

Author

Tran,Ha Thi Thu, Nguyen,Yen Hoang, Vuong,Thuy Dinh, Bui,Loi Van, Doan,Hue Thi, Le,Ha Thi Thu, Cong Le,Thien, Nguyen,Thai Quoc, Do,Son Ngoc, Nguyen,Phuong Doan, Luong,Chinh Quoc, Vu,Tung Son, Tran,Son Nam, Doan,Ngoc Bao, Hoang,Long Bao, Nguyen,Tuan Van, Tran,Ha Thi Thu, Nguyen,Yen Hoang, Vuong,Thuy Dinh, Bui,Loi Van, Doan,Hue Thi, Le,Ha Thi Thu, Cong Le,Thien, Nguyen,Thai Quoc, Do,Son Ngoc, Nguyen,Phuong Doan, Luong,Chinh Quoc, Vu,Tung Son, Tran,Son Nam, Doan,Ngoc Bao, Hoang,Long Bao, and Nguyen,Tuan Van

Abstract

Ha Thi Thu Tran,1,* Yen Hoang Nguyen,1,* Thuy Dinh Vuong,2 Loi Van Bui,3 Hue Thi Doan,1 Ha Thi Thu Le,1 Thien Cong Le,1 Thai Quoc Nguyen,4 Son Ngoc Do,5 Phuong Doan Nguyen,6 Chinh Quoc Luong,5 Tung Son Vu,7 Son Nam Tran,8 Ngoc Bao Doan,9 Long Bao Hoang,10 Tuan Van Nguyen1,11 1Department of Psychiatry, Hanoi Medical University, Hanoi, Vietnam; 2Department of Schizophrenia, Vietnam National Institute of Mental Health, Hanoi, Vietnam; 3Department of Stress-Related Disorders, Vietnam National Institute of Mental Health, Hanoi, Vietnam; 4Center of Tropical Diseases, Bach Mai Hospital, Hanoi, Vietnam; 5Center for Emergency Medicine, Bach Mai Hospital, Hanoi, Vietnam; 6Outpatient Department, Construction Hospital, Hanoi, Vietnam; 7Department of Mood Disorders, Vietnam National Institute of Mental Health, Hanoi, Vietnam; 8Department of Oncology, Vietnam National Hospital of Traditional Medicine, Hanoi, Vietnam; 9School of Preventive medicine and Public health, Hanoi Medical University, Hanoi, Vietnam; 10Research and Training Management Department, Institute of Gastroenterology and Hepatology, Hanoi, Vietnam; 11Vietnam National Institute of Mental Health, Hanoi, Vietnam*These authors contributed equally to this workCorrespondence: Ha Thi Thu Tran, Email tran_thuha@hmu.edu.vnObjective: To evaluate the prevalence of post-traumatic stress disorder (PTSD) and other psychological disturbances in the Vietnamese healthcare workers (HCWs) at COVID-19 field hospitals.Methods: A cross-sectional study was conducted using the Impact of Event Scale–Revised (IES-R) to measure PTSD and the Depression Anxiety Stress scale (DASS) to measure other psychological disturbances. The anxiety about COVID-19 was evaluated by the fear of COVID-19 (FOC) scale. A self-developed questionnaire was used to assess work conditions and HCW’s major concerns and preparedness. Ordinal logistic regression was used to identify factors associated with the severity of PTSD. A structural

Published
2023

6. A Review of the Effectiveness, Feasibility, and Acceptability of Art Therapy for Children and Adolescents during the COVID-19 Pandemic

Author

Le Vu, Minh Ngoc, primary, Do, Anh Linh, additional, Boyer, Laurent, additional, Tran, Quy Chi, additional, Kohler, Stefan, additional, Ahmed, Syed Ishtiaque, additional, Molnar, Andreea, additional, Vu, Tung Son, additional, Vo, Nhan Trong Huynh, additional, Nguyen, Linh Mai Vu, additional, Vu, Linh Gia, additional, Dam, Vu Anh Trong, additional, Duong, Thomy, additional, Do, Dan Linh Nguyen, additional, Do, Ngoc Minh, additional, Mclntyre, Roger S., additional, Latkin, Carl, additional, Ho, Roger Chun Man, additional, and Ho, Cyrus Su Hui, additional

Published
2022
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8. Evaluating the Association Between Genetic Polymorphisms Related to Homocysteine Metabolism and Unexplained Recurrent Pregnancy Loss in Women

Author

Nguyen Ngoc,Nhat, Tran Ngoc Thao,My, Trieu Tien,Sang, Vu Tung,Son, Le,Hoang, Ho Sy,Hung, Nguyen Thanh,Tung, Trinh The,Son, Nguyen Ngoc,Nhat, Tran Ngoc Thao,My, Trieu Tien,Sang, Vu Tung,Son, Le,Hoang, Ho Sy,Hung, Nguyen Thanh,Tung, and Trinh The,Son

Abstract

Nhat Nguyen Ngoc,1 My Tran Ngoc Thao,2 Sang Trieu Tien,3 Son Vu Tung,4 Hoang Le,5 Hung Ho Sy,6 Tung Nguyen Thanh,1 Son Trinh The1 1Military Institute of Clinical Embryology and Histology, Vietnam Military Medical University, Hanoi, 12108, Vietnam; 2Département de formation Biologie moléculaire et cellulaire, Sorbonne University, Paris, 75006, France; 3Department of Biology and Genetics, Vietnam Military Medical University, Hanoi, 12108, Vietnam; 4Department of Epidemiology, Vietnam Military Medical University, Hanoi, 12108, Vietnam; 5IVFTA, Tam Anh General Hospital, Hanoi, 100000, Vietnam; 6Department of Obstetrics and Gynecology, Hanoi Medical University, Hanoi, 100000, VietnamCorrespondence: Son Trinh The; Tung Nguyen Thanh, Military Institute of Clinical Embryology and Histology, Vietnam Military Medical University, Hanoi, 12108, Vietnam, Email trinhtheson@vmmu.edu.vn; nguyenthanhtung@vmmu.edu.vnObjective: To investigate the relationship between unexplained recurrent pregnancy loss (URPL) and polymorphisms of homocysteine metabolism-related genes in women.Materials and Methods: A case–control study included 90 women with two or more consecutive unexplained pregnancy losses and 92 controlled women without miscarriage history; the female participants were in the age category of 18– 35 years. The high-resolution melting technique was used to detect the single-nucleotide variants related to homocysteine metabolism disorder, namely MTHFR C677T, MTHFR A1298C, MTR A2756G, and MTRR A66G polymorphism.Results: The MTHFR C677T polymorphism had significantly correlation with URPL. Indeed, the frequency of the677T allele and genotypes (677CT, 677TT) in the URPL group was significantly higher than that in the control group (p < 0.05). However, the allele, as well as genotype distribution of MTHFR A1298C, MTR A2756G, and MTRR A66G polymorphisms showed no significant difference (p > 0.05). MTHFR 677CT-1298AC genotype combination led to a 9.0-fold increased risk of UR

Published
2022

10. Prevalence, species distribution and antifungal susceptibility of Candida albicans causing vaginal discharge among symptomatic non-pregnant women of reproductive age at a tertiary care hospital, Vietnam

Author

Nguyen Thi Van, Nguyen Thi Nhu Quynh, Le Quoc Tuan, Do Minh Trung, Nguyen Khac Luc, Vu Tung Son, Nguyen Van Tuan, Do Ngoc Anh, Vu Nhat Dinh, Tran Viet Tien, Nguyen Duy Bac, Le Tran Anh, Nguyen Viet Luong, and Dao Nguyen Hung

Subjects
0301 basic medicine, Vaginal discharge, Adult, Antifungal Agents, Adolescent, 030106 microbiology, Infectious and parasitic diseases, RC109-216, Microbial Sensitivity Tests, Microbiology, Tertiary Care Centers, 03 medical and health sciences, chemistry.chemical_compound, Young Adult, 0302 clinical medicine, Drug Resistance, Fungal, Candida albicans, medicine, Prevalence, Humans, 030212 general & internal medicine, Candidiasis, Vulvovaginal, Candida, Voriconazole, biology, business.industry, Research, Vulvovaginal candidiasis, Micafungin, Middle Aged, biology.organism_classification, Corpus albicans, Reproductive age women, Infectious Diseases, Vaginal Discharge, chemistry, Vietnam, Female, Caspofungin, Miconazole, medicine.symptom, business, Antifungal susceptibility, Fluconazole, medicine.drug
Abstract

Background Vaginal candidiasis is frequent in women of reproductive age. Accurate identification Candida provides helpful information for successful therapy and epidemiology study; however, there are very limited data from the Vietnam have been reported. This study was performed to determine the prevalence, species distribution of yeast causing vaginal discharge and antifungal susceptibility patterns of Candida albicans among symptomatic non-pregnant women of reproductive age. Methods Vaginal discharge samples were collected from 462 women of reproductive age in Hanoi, Vietnam between Sep 2019 and Oct 2020. Vaginal swabs from these patients were examined by direct microscopic examination (10% KOH). CHROMagar™ Candida medium and Sabouraud dextrose agar supplemented with chloramphenicol (0.5 g/l) were used to isolate yeast, and species identification was performed using morphological tests and molecular tools (PCR and sequencing). Antifungal susceptibility testing was determined according to the Clinical and Laboratory Standards Institute guidelines (M27-A3 and M27-S4). Results The prevalence of vaginal yeast colonization in non-pregnant women was 51.3% of 462 participants. Nine different yeast species were identified. Among these isolates, C. albicans (51.37%) was the most frequent, followed by C. parapsilosis (25.88%), C. glabrata (11.37%), C. tropicalis (4.31%), C. krusei (3.92%), C. africana (1.57%), Saccharomyces cerevisiae (0.78%), C. nivariensis (1 isolates, 0.39%), and C. lusitaniae (1 isolates, 0.39%), respectively. Among C. albicans, all 46 isolates were 100% susceptible to micafungin, caspofungin, and miconazole. The susceptibility rates to amphotericine B, 5-flucytosine, fluconazole, itraconazole and voriconazole were 95.65, 91.30, 91.30, 82.61 and 86.95%, respectively. Conclusions The prevalence of VVC among symptomatic non-pregnant women of reproductive age in Vietnam was higher than many parts of the world. The high frequency of non-albicans Candida species, which were often more resistant to antifungal agents, was a notable feature. Resistance rates of vaginal C. albicans isolates to antifungal agents was low. Our findings suggest that continued surveillance of changes in species distribution and susceptibility to antifungals should be routinely screened and treated.

Published
2021

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