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Indian J Med Microbiol. 2023 Sep 8;46:100465. doi: 10.1016/j.ijmmb.2023.100465. Online ahead of print.
ABSTRACT
PURPOSE: Cryptococcus neoformans is an encapsulated yeast. It is a significant pathogen among immunocompromised people with HIV & Non-HIV vulnerable populations. These conditions include cancer, corticosteroid usage, immunosuppression following sarcoidosis, organ transplantation, immunosuppressive medication, and liver cirrhosis. In cirrhotic, it accounts for 6-21% of systemic infections.
METHODS: The retrospective study was conducted in tertiary care hepatobiliary center in New Delhi, India. Samples of blood, cerebrospinal fluid (CSF), urine, body fluids, and serum were processed for gram stain, India ink, fungal culture and identification, and cryptococcal antigen. Antifungal susceptibility was assessed using the micro-broth dilution technique.
RESULTS: 30 patients with cryptococcal infection were analysed, and 40 isolates from various samples were recovered. Out of 40 samples, C. neoformans was isolated from blood (62.5%), urine (15%), ascitic fluid (10%), MiniBAL (5%), bone marrow, CSF, and pleural fluid in one sample each. India ink positivity was 56% and all samples were positive for Cryptococcal antigen. Alcoholic liver disease & Hepatitis B & C associated chronic liver disease were seen in 43% & 20% of patients. Other underlying conditions were diabetes mellitus (20%), TB (10%), autoimmune hepatitis (6.6%), autoimmune disease (autoimmune hemolytic anemia, Sjogren syndrome) (6.6%), sarcoidosis (3.3%), hepatocellular carcinoma (3.3%). 7.5%, 5%, 2.5%, 7.5%, and 2.5% of C. neoformans strains were the non-wild type to fluconazole, 5-fluorocytosine, amphotericin B, posaconazole, and itraconazole respectively, but all strains were wildtype to voriconazole.
CONCLUSION: According to the study liver conditions are a significant risk factor for cryptococcal infection. Therefore, cryptococcal isolation and antifungal susceptibility testing, as well as appropriate antifungal drug use, should be studied and paid attention too.
PMID:37690316 | DOI:10.1016/j.ijmmb.2023.100465
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Cryptococcosis among HIV negative liver disease patients: Epidemiology, underlying conditions, antifungal susceptibility profile from tertiary care hepatobiliary center
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