1
|
Owotade FJ, Gulube Z, Patel M. Oral Candida albicans strain diversity and maintenance in HIV positive women in South Africa. Arch Oral Biol 2024; 164:106007. [PMID: 38795522 DOI: 10.1016/j.archoralbio.2024.106007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 05/13/2024] [Accepted: 05/15/2024] [Indexed: 05/28/2024]
Abstract
OBJECTIVE This study investigated C. albicans strain diversity and maintenance in the oral cavity of HIV positive women over a 6 month period. STUDY DESIGN C. albicans strains were isolated from 17 HIV positive women at Charlotte Maxeke Academic Hospital, Johannesburg at 3 intervals over a 6 month period. Strains were genotyped using ABC and Multilocus Sequence Typing (MLST) techniques. In the MLST technique, for each strain, a Diploid Sequence Type (DST) number was obtained. Using cluster analysis, an Unweighted Pair Group Method with Arithmetic Mean (UPGMA) dendrogram and a matrix of strain similarities were generated. Strains were also compared to the previous South African isolates documented in the MLST database. RESULTS Ninety four percent of women carried the same ABC genotype for 6 months. MLST technique, showed that ten women (58.8%) carried the same DST at 2 visits, while seven (41.2%) carried different DST at all visits. Further analysis showed that 64.7% of women were recolonised with different strains and 35.3% carried the same strains of C. albicans with heterozygosity. A total of 40 diploid sequence types were identified of which 27 DSTs were unique to this study group that were added to the MLST database. Most of the strains were closely related to previously isolated strains from South Africa. CONCLUSION Recolonization of the oral cavity with different strains and microevolution of the original strains of C. albicans can occur, which can be a potential problem for HIV patients, in whom highly virulent and drug resistant strains can emerge.
Collapse
Affiliation(s)
- F J Owotade
- Department of Clinical Microbiology and Infectious Diseases, School of Pathology, South Africa; Faculty of Dentistry, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Z Gulube
- Department of Oral Biological Sciences School of Oral Health Sciences, Faculty of Health Sciences, University of The Witwatersrand, Johannesburg, South Africa
| | - M Patel
- Department of Clinical Microbiology and Infectious Diseases, School of Pathology, South Africa.
| |
Collapse
|
2
|
Ge G, Yang Z, Li D, Zhang N, Chen B, Shi D. Distinct host immune responses in recurrent vulvovaginal candidiasis and vulvovaginal candidiasis. Front Immunol 2022; 13:959740. [PMID: 35967437 PMCID: PMC9366074 DOI: 10.3389/fimmu.2022.959740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 06/30/2022] [Indexed: 11/13/2022] Open
Abstract
Recurrent vulvovaginal candidiasis (RVVC) and vulvovaginal candidiasis (RVVC) are one of the most common gynecological infections, primarily caused by Candida species. Although risk factors of RVVC and VVC have been identified in many studies, antifungal immunological mechanisms are still not fully understood. We performed a 1-year prospective study in a local hospital to monitor 98 patients clinically diagnosed with gynecological Candida infection. The results showed that 20.41% (20/98) are with RVVC, and 79.59% (78/98) patients have VVC. C. albicans accounts for 90% and 96.1% of all strains isolated collected from RVVC and VVC patients, respectively. Antifungal susceptibility testing showed no significant difference in Candida species between RVVC and VVC patients. However, the serum levels of IFN-γ, TNF-α, and IL-17F in the RVVC group were significantly lower than those of the VVC group, while IL-4, IL-6, and IL-10 were higher in the RVVC patients than VVC patients. IL-17A and IL-2 levels were comparable between the two groups. Taken together, our results suggest that the host-immune responses, especially Th1/2 immunity, may play important roles in prognosis of RVVC and VVC.
Collapse
Affiliation(s)
- Gai Ge
- Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, China
| | - Zhiya Yang
- Laboratory of Medical Mycology, Jining No.1 People’s Hospital, Jining, China
| | - Dongmei Li
- Department of Microbiology & Immunology, Georgetown University Medical Center, Washington DC, United States
| | - Ning Zhang
- Laboratory of Medical Mycology, Jining No.1 People’s Hospital, Jining, China
| | - Biao Chen
- Laboratory of Medical Mycology, Jining No.1 People’s Hospital, Jining, China
| | - Dongmei Shi
- Laboratory of Medical Mycology, Jining No.1 People’s Hospital, Jining, China
- Department of Dermatology, Jining No.1 People’s Hospital, Jining, China
- *Correspondence: Dongmei Shi,
| |
Collapse
|
3
|
Zhu Y, Fang C, Shi Y, Shan Y, Liu X, Liang Y, Huang L, Liu X, Liu C, Zhao Y, Fan S, Zhang X. Candida albicans Multilocus Sequence Typing Clade I Contributes to the Clinical Phenotype of Vulvovaginal Candidiasis Patients. Front Med (Lausanne) 2022; 9:837536. [PMID: 35433756 PMCID: PMC9010739 DOI: 10.3389/fmed.2022.837536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 02/18/2022] [Indexed: 01/12/2023] Open
Abstract
Candida albicans is the most frequent fungal species responsible for vulvovaginal candidiasis (VVC), which exhibits distinct genetic diversity that is linked with the clinical phenotype. This study aimed to assess the genotypes and clinical characteristics of different C. albicans isolates from VVC patients. Based on multilocus sequence typing (MLST), clade 1 was identified as the largest C. albicans group, which appeared most frequently in recurrent VVC and treatment failure cases. Further study of antifungal susceptibility demonstrated that MLST clade 1 strains presented significantly higher drug resistance ability than non-clade 1 strains, which result from the overexpression of MDR1. The mRNA and protein expression levels of virulence-related genes were also significantly higher in clade 1 isolates than in non-clade 1 isolates. Proteomic analysis indicated that the protein stabilization pathway was significantly enriched in clade 1 strains and that RPS4 was a central regulator of proteins involved in stress resistance, adherence, and DNA repair, which all contribute to the resistance and virulence of MLST clade 1 strains. This study was the first attempt to compare the correlation mechanisms between C. albicans MLST clade 1 and non-clade 1 strains and the clinical phenotype, which is of great significance for VVC classification and treatment.
Collapse
Affiliation(s)
- Yuxia Zhu
- Department of Obstetrics and Gynecology, Peking University Shenzhen Hospital, Shenzhen, China
- Shenzhen PKU-HKUST Medical Center, Institute of Obstetrics and Gynecology, Shenzhen, China
- Shenzhen Key Laboratory on Technology for Early Diagnosis of Major Gynecological Disease, Shenzhen, China
| | | | - Yu Shi
- Clinical College of Peking University Shenzhen Hospital, Anhui Medical University, Hefei, China
| | - Yingying Shan
- Department of Obstetrics and Gynecology, Peking University Shenzhen Hospital, Shenzhen, China
- Shenzhen PKU-HKUST Medical Center, Institute of Obstetrics and Gynecology, Shenzhen, China
- Shenzhen Key Laboratory on Technology for Early Diagnosis of Major Gynecological Disease, Shenzhen, China
| | - Xiaoping Liu
- Department of Laboratory Science, Peking University Shenzhen Hospital, Shenzhen, China
| | - Yiheng Liang
- Department of Obstetrics and Gynecology, Peking University Shenzhen Hospital, Shenzhen, China
- Shenzhen PKU-HKUST Medical Center, Institute of Obstetrics and Gynecology, Shenzhen, China
- Shenzhen Key Laboratory on Technology for Early Diagnosis of Major Gynecological Disease, Shenzhen, China
| | - Liting Huang
- Department of Obstetrics and Gynecology, Peking University Shenzhen Hospital, Shenzhen, China
- Shenzhen PKU-HKUST Medical Center, Institute of Obstetrics and Gynecology, Shenzhen, China
- Shenzhen Key Laboratory on Technology for Early Diagnosis of Major Gynecological Disease, Shenzhen, China
| | - Xinyang Liu
- Department of Obstetrics and Gynecology, Peking University Shenzhen Hospital, Shenzhen, China
- Shenzhen PKU-HKUST Medical Center, Institute of Obstetrics and Gynecology, Shenzhen, China
- Shenzhen Key Laboratory on Technology for Early Diagnosis of Major Gynecological Disease, Shenzhen, China
| | - Chunfeng Liu
- Department of Obstetrics and Gynecology, Peking University Shenzhen Hospital, Shenzhen, China
- Shenzhen PKU-HKUST Medical Center, Institute of Obstetrics and Gynecology, Shenzhen, China
- Shenzhen Key Laboratory on Technology for Early Diagnosis of Major Gynecological Disease, Shenzhen, China
| | - Yin Zhao
- Research Institute of Huazhong University of Science and Technology in Shenzhen, Shenzhen, China
| | - Shangrong Fan
- Department of Obstetrics and Gynecology, Peking University Shenzhen Hospital, Shenzhen, China
- Shenzhen PKU-HKUST Medical Center, Institute of Obstetrics and Gynecology, Shenzhen, China
- Shenzhen Key Laboratory on Technology for Early Diagnosis of Major Gynecological Disease, Shenzhen, China
- Shangrong Fan
| | - Xiaowei Zhang
- Department of Obstetrics and Gynecology, Peking University Shenzhen Hospital, Shenzhen, China
- Shenzhen PKU-HKUST Medical Center, Institute of Obstetrics and Gynecology, Shenzhen, China
- Shenzhen Key Laboratory on Technology for Early Diagnosis of Major Gynecological Disease, Shenzhen, China
- *Correspondence: Xiaowei Zhang
| |
Collapse
|
4
|
Song N, Kan S, Pang Q, Mei H, Zheng H, Li D, Cui F, Lv G, An R, Li P, Xiong Z, Fan S, Zhang M, Chen Y, Qiao Q, Liang X, Cui M, Li D, Liao Q, Li X, Liu W. A prospective study on vulvovaginal candidiasis: multicentre molecular epidemiology of pathogenic yeasts in China. J Eur Acad Dermatol Venereol 2021; 36:566-572. [PMID: 34908189 DOI: 10.1111/jdv.17874] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 11/17/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND Vulvovaginal candidiasis (VVC) is frequent in women of reproductive age, but very limited data are available on the epidemiology in cases of VVC in China. OBJECTIVES The current study has been conducted to reveal the prevalence, species distribution of yeast causing VVC and molecular genetics of Candida albicans in China. METHODS Vaginal swabs were collected from 543 VVC outpatients recruited in 12 hospitals in China between September 2017 and March 2018. They were preliminarily incubated on Sabouraud dextrose agar and then positive subjects of which were then transmitted to our institute for further identification. CHROMagar™ was used to isolate Candida species, and all isolates were finally identified by DNA sequencing. Multilocus sequence typing (MLST) was used to analyse phylogenetic relationships of the various C. albicans isolates. RESULTS Eleven different yeast species were identified in 543 isolates, among which C. albicans (84.7%) was the most frequent, followed by C. glabrata (8.7%). We obtained 117 unique diploid sequence types from 451 clinical C. albicans isolates and 92 isolates (20.4%) belonged to a New Clade. All the strains appearing in the New Clade were from northern China and they were isolated from non-recurrent VVC. CONCLUSIONS Our findings suggest that C. albicans are still the main cause of VVC in China and the majority of C. albicans isolates belongs to Clade 1 with DST 79 and DST 45 being two most common. Moreover, the New Clade revealed in our study seems to be specific to northern China.
Collapse
Affiliation(s)
- N Song
- Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, China
| | - S Kan
- Shanghai Skin Disease Hospital, Department of Medical Mycology, Tongji University School of Medicine, Shanghai, China
| | - Q Pang
- Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, China
| | - H Mei
- Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, China
| | - H Zheng
- Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, China.,Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Nanjing, China
| | - D Li
- Department of Microbiology/Immunology, Georgetown University, Washington, DC, USA
| | - F Cui
- Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - G Lv
- Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, China
| | - R An
- The First Affiliated Teaching Hospital of Xi'an Jiaotong University, Xi'an, China
| | - P Li
- Nanjing Maternity and Child Health Care Hospital, Women's Hospital of Nanjing Medical University, Nanjing, China
| | - Z Xiong
- The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - S Fan
- Peking University Shenzhen Hospital, Shenzhen, China
| | - M Zhang
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Y Chen
- The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Q Qiao
- The Affiliated Hospital of Inner Mongolia Medical University, Huhehaote, China
| | - X Liang
- Peking University People's Hospital, Beijing, China
| | - M Cui
- Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, China
| | - D Li
- The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Q Liao
- Department of Obstetrics and Gynecology, Beijing Tsinghua Changgung Hospital, School of Clinical Medical, Tsinghua University, Beijing, China
| | - X Li
- Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, China.,Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Nanjing, China
| | - W Liu
- Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, China.,Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Nanjing, China.,Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China
| |
Collapse
|