Background: Due to the inherent differences in their antifungal susceptibility, quick and accurate identification of clinical fungal pathogens is essential for accurate diagnosis and timely therapeutic interventions. Aim This study was carried out to detect the internal transcribed sequencing profile and ERG2 gene in Candida albicans in clinical isolates. Deoxyribonucleic acid (DNA) was extracted using the boiling method, and the ERG2 gene sequence was detected using PCR for molecular characterisation of species with related behavioral characteristics.
Methods: 221 samples in total were assessed. Gram staining, the germ tube test, and biochemical analysis were all used to identify each strain.
Results: The statistical tool used was descriptive statistics (Frequencies, Percentages). 13 (5.7%) of the 129 Candida species were found in male subjects, while 116 (52.5%) were found in female subjects. 74 (33.5%), 30 (13.6%), and 13 (5.7%) of the findings came from high vaginal swabs, endocervical swabs, and throat swabs, respectively. In contrast, only two (0.9%) of the findings came from wound swabs, pleural fluid, eye swabs, urethral swabs, catheter tips, or blood cultures, and none from ear swabs. However, from subjects in the age ranges 0-10 years, 11-20 years, 21-30 years, 31-40 years, 41-50 years, and 51-60 years, respectively, 14 (6.3%), 6 (2.7%), 68/ (30.8%), 33 (14.9%), 6 (2.7%), and 2 (0.9%) were isolated. The antifungal susceptibility pattern showed that the age groups 0–10 years, 11–20 years, 21–30 years, 41–50 years, and 51–60 years had the highest resistance prevalence to the antifungal drugs Nystatin, Itraconazole, Fluconazole, Clotrimazole, and Ketoconazole, with resistance prevalences of 14 (10.9%), 6 (4.7%), 58 (45.0%), 27 (20.9%), 5 (3.9%), and 2 (1.6 The largest prevalence of resistance to the antifungal medications Nystatin and Itraconazole, however, was seen in females, where it was 93 (72.1%), and in men, where it was 11 (8.5%). Of the 58 isolates used for molecular analysis, only females between the ages of 20 and 40 had the ERG2 gene found, and it was primarily found in high vaginal swabs and endocervical swabs.
Conclusion: Our study thus supports the use of molecular techniques, particularly internal transcribed spacer (ITS), as a key marker for identifying fungi, even though these techniques are not commonly used in our climate.
ERG2 gene, candida albicans, teaching hospital, internal transcribed, sequencing profile
Aaron, U. U., Abbey, S. D., & Azuonwu, O. (2017). Antifungal activity assessment of selected locally sold over-the-counter azole against Candida isolates from hospital and community settings of Rivers State, Nigeria. Journal of Natural Sciences Research, 7(9), 1102–1111.
Aaron, U. U., Abbey, S. D., & Azuonwu, O. (2017). Comparative analysis of Candida isolates obtained from hospital and community settings of Niger Delta, Nigeria. EPRA International Journal of Advanced Research and Development, 4(2), 24–31.
Abbey, S. D., Azuonwu, O., & Aaron, U. U. (2017). Antifungal resistance surveillance: A tool necessary for monitoring azole resistance potentials in Candida isolates from Niger Delta communalities in Nigeria. Current Studies in Comparative Education, Science and Technology, 4(1), 81–93.
Arip, M., Selvaraja, M., R, M., Tan, L. F., Leong, M. Y., Tan, P. L., Yap, V. L., Chinnapan, S., Tat, N. C., Abdullah, M., K, D., & Jubair, N. (2022). Review on plant-based management in combating antimicrobial resistance—Mechanistic perspective. Frontiers in Pharmacology, 13, 87.
Asao, K., Hashida, N., Maruyama, K., Motooka, D., Tsukamoto, T., & Usui, Y. (2023). Comparative evaluation of 16S rRNA metagenomic sequencing in the diagnosis and understanding of bacterial endophthalmitis. BMJ Open Ophthalmology, 8, e001342.
Banos, S., Lentendu, G., Kopf, A., Wubet, T., Glöckner, F. O., & Reich, M. (2018). A comprehensive fungi-specific 18S rRNA gene sequence primer toolkit suited for diverse research issues and sequencing platforms. BMC Microbiology, 18, 190.
Breazzano, M. P., Bond, J. B., III, Bearelly, S., Kim, D. H., Donahue, S. P., & Lum, F. (2022). American Academy of Ophthalmology recommendations on screening for endogenous Candida endophthalmitis. Ophthalmology, 129, 73–76.
Chen, Z., Luo, T., Huang, F., Yang, F., Luo, W., Chen, G., Cao, M., Wang, F., & Zhang, J. (2022). Kangbainian lotion ameliorates vulvovaginal candidiasis in mice by inhibiting the growth of fluconazole-resistant Candida albicans and the Dectin-1 signaling pathway activation. Frontiers in Pharmacology, 12, 81.
Chouhan, S., Kallianpur, S., & Prabhu, K. T. (2019). Candidal prevalence in diabetics and its species identification. International Journal of Applied and Basic Medical Research, 9(1), 49–54.
Dhingra, S., & Cramer, R. A. (2017). Regulation of sterol biosynthesis in the human fungal pathogen Aspergillus fumigatus: Opportunities for therapeutic development. Frontiers in Microbiology, 8, 92.
Esfahani, A., Omran, A. N., Salehi, Z., Shams-Ghahfarokhi, M., Ghane, M., Eybpoosh, S., & Razzaghi-Abyaneh, M. (2022). Molecular epidemiology, antifungal susceptibility, and ERG11 gene mutation of Candida species isolated from vulvovaginal candidiasis: Comparison between recurrent and non-recurrent infections. Microbial Pathogenesis, 170, 105.
Hillenbrand, M., Mendy, A., Patel, K., Wilkinson, R., Liao, S., & Robertson, J. (2022). The incidence of ocular complications in candidemic patients and implications for the practice of routine eye exams. Open Forum Infectious Diseases, 9, 45.
Kim, Y. J., Kim, S. I., & Choi, J. Y. (2019). Invasive fungal infection in liver transplant recipients in a prophylactic era: A multicenter retrospective cohort study in Korea. Medicine (Baltimore), 98(26), e16179.
Koehler, P., Stecher, M., & Cornely, O. A. (2019). Morbidity and mortality of candidaemia in Europe: An epidemiologic meta-analysis. Clinical Microbiology and Infection, 25(10), 1200–1212.
Kishore, K., McGowan, D. S., Chatterjee, T., & Hassanzadeh, B. (2020). A case of bilateral endogenous Candida dubliniensis endophthalmitis treated with aggressive local and systemic therapy. Case Reports in Ophthalmology, 11, 561–573.
Maione, A., Bellavita, R., de Alteriis, E., Galdiero, S., Albarano, L., & La Pietra, A. (2022). WMR peptide as antifungal and antibiofilm against albicans and non-albicans Candida species: Shreds of evidence on the mechanism of action. International Journal of Molecular Sciences, 23, 2151.
O’Donnell, M., Eller, A. W., Waxman, E. L., Clancy, C. J., & Nguyen, M. H. (2022). Screening for ocular candidiasis among patients with candidemia: Is it time to change practice? Clinical Infectious Diseases, 75, 1092–1096.
Osset-Trénor, P., Pascual-Ahuir, A., & Proft, M. J. (2023). Fungal drug response and antimicrobial resistance. Fungi (Basel), 9(5), 565.
Peng, K. L., Kung, Y. H., Tsai, H. S., & Wu, T. T. (2021). Treatment outcomes of acute postoperative infectious endophthalmitis. BMC Ophthalmology, 21, 384.
Ramírez-Soto, M. C., & Bonifaz, A. (2022). Ocular fungal infections. Journal of Fungi (Basel), 8, 1078.
Sagar, A. (2017). Candida albicans- Habitat, Morphology, Cultural Characteristics, Life Cycle, Pathogenesis, Lab Diagnosis, Treatments, Prevention and Control. Mycology Microbiology Notes.
Sah, P., Patel, P., & Chandrashekar, C. (2019). Oral candidal carriage correlates with CD4+ cell count but not with HIV and highly active antiretroviral therapy status. Journal of Investigative and Clinical Dentistry, 10(4), e12438.
Spivak, E. S., & Hanson, K. E. (2017). Candida auris: An emerging fungal pathogen. Journal of Clinical Microbiology, 56(2).
Talapko, J., Juzbašić, M., Matijević, T., Pustijanac, E., Bekić, S., & Kotris, I. (2021). Candida albicans-the virulence factors and clinical manifestations of infection. Journal of Fungi (Basel), 7, 79.
Tavakoli, M., Zaini, F., Kordbacheh, M., Safara, M., & Raoofian, R. (2010). Upregulation of the ERG11 gene in Candida krusei by azoles. Daru Journal of Pharmaceutical Sciences, 18(4), 276–280.
Thomas, E., Roman, E., Claypool, S., Manzoor, N., Pla, J., & Panwar, S. L. (2013). Mitochondria influence CDR1 efflux pump activity, Hog 1-mediated oxidative stress pathway, iron homeostasis, and ergosterol levels in Candida albicans. Antimicrobial Agents and Chemotherapy, 57, 5580–5599.
Ueda, T., Takesue, Y., Tokimatsu, I., Miyazaki, T., Nakada-Motokawa, N., & Nagao, M. (2019). The incidence of endophthalmitis or macular involvement and the necessity of a routine ophthalmic examination in patients with candidemia. PLoS ONE, 14, e0216956.
Waikhom, S. D., Afeke, I., & Kwawu, G. S. (2020). Prevalence of vulvovaginal candidiasis among pregnant women in the Ho municipality, Ghana: Species identification and antifungal susceptibility of Candida isolates. BMC Pregnancy and Childbirth, 20, 266.
Wu, Y., Du, S., Johnson, J. L., Tung, H., Landers, C. T., Liu, Y., Seman, B. G., Wheeler, R. T., & Costa-Mattioli, M. (2019). Microglia and amyloid precursor protein coordinate control of transient Candida cerebritis with memory deficits. Nature Communications, 10, 58.