Genotype distribution of hepatitis C virus (HCV) can vary over the years between different patient groups and regions. The prevalence of intravenous drug users (IVDU) is known to increase in our country, yet there are a limited number of studies investigating the distribution of HCV genotypes in this group. These data are essential for monitorization of the changes in HCV epidemiology. The present study aimed to evaluate the five-year results of HCV genotyping among patients infected with HCV related to IVDU and unrelated to drug use. Plasma samples of 720 patients (HCV antibody, HCV RNA positive), which were sent to our laboratory for HCV genotyping between January 2014-March 2019 were analyzed. HCV RNA extraction from plasma samples was performed in the automated-extraction system of EZ1 advanced (Qiagen, Germany) using the EZ1 virus mini kit v2.0 (Qiagen, Germany). Amplicons were obtained by amplifying the 5’NCR and core gene region in the Rotorgene 6000 real-time PCR (Qiagen, Germany) device with the HCV RNA real-time quantitative 2.0 (NLM, Italy) kit. For the genotyping, a commercial line probe assay (LIPA) based on in vitro reverse hybridization GEN-C2.0 kit (NLM, Italy) which can distinguish 1, 2, 3, 4, 6 genotypes and 1a, 1b, 2a/c, 2b, 3a, 3b, 3c, 3k, 4a, 4b, 4c/d, 4e, 4f, 4h, 5a, 6a/b, 6g, 6f/q, 6m, 7a subtypes of HCV, based on variations in the 5’-NCR and core regions was used. HCV genotype distribution of 266 IVDU (93.2%: male; median age: 25 ± 6.82) and 454 non-drug users (51.3%: male; median age: 56.5 ± 16.06) were examined. In order of frequency in the group with IVDU; genotype 1a, 3a, 1b, 4c/d, 2b, 4, 3 were observed and genotype 1, 2a/c and mixed genotype (1+3a) were detected in one patient. In the group without IVDU, in order of frequency; genotype 1b, 1a, 3a, 1, 2a/c, 4 were observed and genotype 2b, 4c/d, 5a, 6a/b, 6 and mixed genotype (3+4) were detected in one patient. Genotypes 1a and 3a were significantly higher in the IVDU group (p< 0.00001, p< 0.00001), while 1b was significantly higher in patients without IVDU (p< 0.00001). Genotypes 1a and 3a were more common in young men (p< 0.00001, p= 0.000163), while 1b was higher in middleaged women (p< 0.00001). The incidence of genotypes 1b (p= 0.021) and 3a (p= 0.012) was higher in foreign nationals than the Turkish patients. When the HCV genotype distribution was examined by years, it was observed that the percentages of genotype 1b and 1a were decreasing, while the percentage of genotype 3a was increasing. As a result, in this study, HCV genotype distribution among IVDU was observed to be different from the general population without IVDU. It was found that genotypes 1a and 3a were more common in the IVDU group. As in the other regions of our country, genotype 1b was found most frequently in the general population. Genotype 3a increases significantly compared to years. In our study, the determination of genotypes existing in different parts of the world may be due to the foreign nationals living in our city and our region is a tourism center. It is also necessary to investigate whether there is an increase in IVDU over the years.
It is suggested that inexpensive MHA is a fast, appropriate, and reliable medium for the probable diagnosis of GTT and C. albicans; however, additional studies are still needed to define other Candida species.
Saprochaete capitata (formerly known as Blastoschizomyces capitatus, Trichosporon capitatum, Geotrichum capitatum) is a rare but emerging yeast-like fungus. It is commonly found in environmental sources and can be isolated from skin, gastrointestinal system and respiratory tract of healthy individuals as well. It mainly infects patients with hematological malignancies such as acute myeloid leukemia (AML), especially in the presence of neutropenia; and mortality rates are high in those patients. Although the data about the in vitro antifungal susceptibility are limited, it is being reported that amphotericin B and voriconazole are more effective on S.capitata isolates whereas caspofungin had no activity. Here, we report a case of fungemia and septic arthritis due to S.capitata in a patient with Fanconi aplastic anemia. A 22-year-old male patient with Fanconi aplastic anemia was hospitalized in our hematology department for bone marrow transplantation. Two days after the hospitalization, neutropenic fever developed and multiple nodules similar to candidiasis were detected in his liver with the whole abdomen magnetic resonance imaging (MRI). Caspofungin treatment (single 70 mg/kg loading dose, followed by 1 x 50 mg/kg/day) was started. The patient remained febrile, and his blood culture yielded S.capitata. The treatment regimen was changed to a combination of liposomal amphotericin B (3 mg/kg/day) and voriconazole (2 x 4 mg/kg/day). A few days later, pain and swelling came out on patient's left knee and he underwent a surgical process with the prediagnosis of septic arthritis. Culture of synovial fluid was also positive for S.capitata. On the 26th day of the hospitalization, the patient died due to sepsis and multiple organ failure. Patient's blood and synovial fluid samples were incubated in BacT/Alert automated blood culture system (bioMérieux, France). After receiving the growth signal, yeast cells were seen in Gram staining and cream-coloured, wrinkled, yeast-like colonies that were able to grow at 45oC and resistant to cycloheximide were detected on Sabouraud dextrose agar (SDA). Urease test was negative, and according to API 20C AUX (bioMérieux, France) system, none of the carbonhydrates were utilized except glucose. The isolates that were able to produce annelloconidia in corn meal-Tween 80 agar slide culture were identified as S.capitata. The identification was further confirmed by DNA sequence analysis. Minimal inhibitory concentrations (MICs) of amphotericin B, fluconazole, voriconazole, and caspofungin were found to be 0.5 µg/ml, 1.5 µg/ml, 0.032 µg/ml, and > 16 µg/ml respectively. Repetitive sequence based PCR (rep-PCR) (DiversiLab system, bioMérieux, France) was used to determine clonal relatedness of the isolates from blood and synovial fluid samples. The isolates were indistinguishable (similarity coefficient > 97%) according to rep-PCR. In conclusion, S.capitata infections should be taken into consideration in the presence of fungemia and septic arthritis in hematological patients who receive caspofu...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.