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Dikmen N, Duran N, Ay E, Cimen F, Tek E. Genotyping, drug resistance and virulence factors of Candida species isolated from patients using long-term inhaled steroids. Int J Clin Pract 2021; 75:e14820. [PMID: 34487398 DOI: 10.1111/ijcp.14820] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 09/03/2021] [Indexed: 01/08/2023] Open
Abstract
AIMS In this study, it was aimed to determine the isolation frequency and species distribution of Candida species isolated from asthmatic patients using long-term inhaled steroids. It was also aimed to determine the drug resistance patterns and the frequency of erg11, HWP1, ALS1, INT1, SAP1 PLB1 genes in isolates. METHODS Genotyping of Candida strains isolated from patients and healthy control group was performed by PCR-RFLP method. Drug resistance was investigated phenotypically, and the presence of erg11 resistance genes and HWP1, ALS1, INT1, SAP1 PLB1 virulence genes were investigated by PCR method. RESULTS C albicans was the most isolated species in steroid-using patients and healthy control groups (patients: 44.2%; control group: 30.8%). C tropicalis and C glabrata were found to have the highest rates of non-albicans Candida in patients with 17.4% and 13.77%, respectively. Azole resistance was found to be significantly higher in isolates isolated from patients compared to the control group. Similarly, the presence of erg11 resistance gene was highest in C albicans (17.65%), C glabrata (12.5%) and C tropicalis (8.3%) strains in the control group, while C parapsilosis was highest in patients. (57.1%) and C glabrata (54.2%) strains. Compared to the control group, the virulence of Candida strains isolated from the patients was found to be higher. Presence of HWP1, ALS1, INT1, SAP1 and PLB1 genes in patients were determined as 72.1%, 63.9%, 68.9%, 57.38% and 54.5%, respectively. These rates were 29.4%, 35.3%, 25.5%, 17.7% and 23.5% in the healthy control group, respectively. CONCLUSIONS In asthma patients using long-term inhaled steroids, both Isolation rates of Candida species, drug resistance rates, presence of virulence genes were found to be significantly higher in patients than in the control group. We think that this may be due to the suppression of cellular immunity by long-term steroid use.
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Affiliation(s)
- Nursel Dikmen
- Department of Chest Diseases, Medical Faculty, Mustafa Kemal University, Antakya, Hatay, Turkey
| | - Nizami Duran
- Department of Medical Microbiology, Medical Faculty, Mustafa Kemal University, Antakya, Hatay, Turkey
| | - Emrah Ay
- Department of Medical Microbiology, Medical Faculty, Mustafa Kemal University, Antakya, Hatay, Turkey
| | - Funda Cimen
- Department of Medical Microbiology, Medical Faculty, Mustafa Kemal University, Antakya, Hatay, Turkey
| | - Erhan Tek
- Department of Medical Microbiology, Medical Faculty, Mustafa Kemal University, Antakya, Hatay, Turkey
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Frequency, Distribution and Genotyping of Malassezia Species in Patients with Psoriasis vulgaris. REV ROMANA MED LAB 2021. [DOI: 10.2478/rrlm-2021-0011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Background: Malassezia species are reported to play a role in the etiology of Psoriasis vulgaris.
Objective: The aim of this study was to determine the presence, frequency, distribution, and genotyping of skin colonization of Malassezia species in Psoriasis vulgaris and to compare with healthy individuals and to investigate its relationship with the severity of the disease.
Methods: Skin samples were taken from scalp, arm, body, and leg of 34 psoriasis patients (lesional/non-lesional skin) and 30 healthy volunteers. Overall, 392 skin scraping samples were taken for the isolation of Malassezia species, which were incubated on the modified-Dixon agar. Conventional culture methods were used for Malassezia species identification. In isolates, genotyping was carried out by PCR-RFLP method.
Results: In the samples from psoriatic lesions, most frequently isolated Malassezia species were M.globosa and M.furfur. Similarly, the most frequently isolated species in healthy volunteers was M. globosa; followed by M.restricta and M.sympodialis. The M.furfur isolation rate in psoriatic scalp and leg lesions of the patients was significantly higher than in healthy volunteers. There was no relationship between the severity of the disease and the isolated species.
Conclusion: It was found that there was a difference between patients with psoriasis and healthy controls regarding presence and frequency of Malassezia species. Therefore, our study results support the view that Malessezia species may be associated with the etiopathogenesis of psoriasis. In addition, we surmise that the treatment applications for the regulation of skin microbiota of psoriasis patients will contribute positively to the treatment of psoriasis.
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Aghili SR, Abastabar M, Soleimani A, Haghani I, Azizi S. High prevalence of asymptomatic nosocomial candiduria due to Candida glabrata among hospitalized patients with heart failure: a matter of some concern? Curr Med Mycol 2021; 6:1-8. [PMID: 34195453 PMCID: PMC8226045 DOI: 10.18502/cmm.6.4.5327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Background and Purpose: Heart failure is a leading cause of hospitalization, and asymptomatic candiduria is common in hospitalized patients with low morbidity.
However, in most patients, it is resolved spontaneously on the removal of the catheter. Despite the publication of guidelines,
there are still controversies over the diagnosis and management of candiduria.
However, in hospitalized patients with heart failure, the decision to treat candiduria is especially important since
the nosocomial infections are associated with an increase in morbidity, mortality, length of hospital stay, and healthcare costs.
Some species of Candida, such as Candida glabrata, are increasingly resistant to the first-line and second-line antifungal medications.
The present study aimed to investigate the incidence of asymptomatic Candida urinary tract infection due to C.
glabrata and antifungal susceptibility of Candida isolates in hospitalized patients with heart failure. Materials and Methods: In total, 305 hospitalized patients with heart failure were studied to identify asymptomatic nosocomial candiduria during 2016-17
in one private hospital in the north of Iran.
The Sabouraud’s dextrose agar culture plates with a colony count of >104 colony-forming
unit/ml of urine sample were considered as Candida urinary tract infection.
Candida species were identified based on the morphology of CHROMagar Candida (manufactured by CHROMagar, France) and
PCR-RFLP method with MspI restriction enzyme.
Antifungal susceptibility testing of the isolates was performed using five mediations, including itraconazole, voriconazole,
fluconazole, amphotericin B, and caspofungin by broth
microdilution method according to CLSI M27-S4. Results: In this study, the rate of asymptomatic Candida urinary tract infection was 18.8%, which was more common in people above 51
years old and females (70%).
In addition to the urinary and intravascular catheter, the occurrence of candiduria in hospitalized patients had significant relationships
with a history of
surgical intervention, diastolic heart failure, and use of systemic antibiotics (P>0.05). Among Candida spp., non-albicans Candida
species was the most common
infectious agent (59.7%). Moreover, C. glabrata (n=27, 40.3%) (alone or with other species) and Candida albicans (n=27, 40.3%) were the most
common agents isolated in
Candida urinary tract infection. Based on the results of the in vitro susceptibility test, the C. glabrata isolates were 15%, 59%, 70%, 74%,
and 85% susceptible to
caspofungin, amphotericin B, itraconazole, voriconazole, and fluconazole, respectively. Conclusion: According to the findings, there was a high prevalence of asymptomatic Candida urinary tract infection in hospitalized patients with heart failure.
Besides, it was suggested that there was a shift towards non-albicans Candida, especially C. glabrata, in these patients.
Therefore, asymptomatic candiduria in hospitalized patients with heart failure should be considered significant.
Furthermore, the identification of Candida species along with antifungal susceptibility is essential and helps the clinicians to
select the appropriate antifungal agent for better management of such cases.
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Affiliation(s)
- Seyed Reza Aghili
- Invasive Fungi Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran.,Department of Medical Mycology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mahdi Abastabar
- Invasive Fungi Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran.,Department of Medical Mycology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ameneh Soleimani
- Department of Medical Mycology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Iman Haghani
- Invasive Fungi Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran.,Department of Medical Mycology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Soheil Azizi
- Department of Laboratory Medicine, Faculty of Allied Medical Sciences, Mazandaran University of Medical Science, Sari, Iran
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Franco-Duarte R, Černáková L, Kadam S, Kaushik KS, Salehi B, Bevilacqua A, Corbo MR, Antolak H, Dybka-Stępień K, Leszczewicz M, Relison Tintino S, Alexandrino de Souza VC, Sharifi-Rad J, Coutinho HDM, Martins N, Rodrigues CF. Advances in Chemical and Biological Methods to Identify Microorganisms-From Past to Present. Microorganisms 2019; 7:E130. [PMID: 31086084 PMCID: PMC6560418 DOI: 10.3390/microorganisms7050130] [Citation(s) in RCA: 157] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 04/30/2019] [Accepted: 05/08/2019] [Indexed: 12/12/2022] Open
Abstract
Fast detection and identification of microorganisms is a challenging and significant feature from industry to medicine. Standard approaches are known to be very time-consuming and labor-intensive (e.g., culture media and biochemical tests). Conversely, screening techniques demand a quick and low-cost grouping of bacterial/fungal isolates and current analysis call for broad reports of microorganisms, involving the application of molecular techniques (e.g., 16S ribosomal RNA gene sequencing based on polymerase chain reaction). The goal of this review is to present the past and the present methods of detection and identification of microorganisms, and to discuss their advantages and their limitations.
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Affiliation(s)
- Ricardo Franco-Duarte
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, 4710-057 Braga, Portugal.
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, 4710-057 Braga, Portugal.
| | - Lucia Černáková
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 842 15 Bratislava, Slovakia.
| | - Snehal Kadam
- Ramalingaswami Re-entry Fellowship, Department of Biotechnology, Government of India, India.
| | - Karishma S Kaushik
- Ramalingaswami Re-entry Fellowship, Department of Biotechnology, Government of India, India.
| | - Bahare Salehi
- Student Research Committee, School of Medicine, Bam University of Medical Sciences, Bam 14665-354, Iran.
| | - Antonio Bevilacqua
- Department of the Science of Agriculture, Food and Environment, University of Foggia, 71121 Foggia, Italy.
| | - Maria Rosaria Corbo
- Department of the Science of Agriculture, Food and Environment, University of Foggia, 71121 Foggia, Italy.
| | - Hubert Antolak
- Institute of Fermentation Technology and Microbiology, Department of Biotechnology and Food Science, Lodz University of Technology, Wolczanska 171/173, 90-924 Lodz, Poland.
| | - Katarzyna Dybka-Stępień
- Institute of Fermentation Technology and Microbiology, Department of Biotechnology and Food Science, Lodz University of Technology, Wolczanska 171/173, 90-924 Lodz, Poland.
| | - Martyna Leszczewicz
- Laboratory of Industrial Biotechnology, Bionanopark Ltd, Dubois 114/116, 93-465 Lodz, Poland.
| | - Saulo Relison Tintino
- Laboratory of Microbiology and Molecular Biology (LMBM), Department of Biological Chemistry/CCBS/URCA, 63105-000 Crato, Brazil.
| | | | - Javad Sharifi-Rad
- Zabol Medicinal Plants Research Center, Zabol University of Medical Sciences, Zabol 61615-585, Iran.
| | - Henrique Douglas Melo Coutinho
- Laboratory of Microbiology and Molecular Biology (LMBM), Department of Biological Chemistry/CCBS/URCA, 63105-000 Crato, Brazil.
| | - Natália Martins
- Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal.
- Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135 Porto, Portugal.
| | - Célia F Rodrigues
- LEPABE⁻Dep. of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal.
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Zheng LJ, Liu N, Yang K, Wang AF, Tan ZR, Li X. Clinical application and importance of one-step human CYP2C19 genotype detection. J Int Med Res 2018; 46:4965-4973. [PMID: 30360673 PMCID: PMC6300956 DOI: 10.1177/0300060518787718] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND To directly achieve cytochrome P450 2C19 gene ( CYP2C19) classification using one-step real-time fluorescent PCR detection and to verify the capabilities of this method with nucleic acid extracted from whole blood samples. METHODS A human CYP2C19 genotyping kit based on one-step real-time fluorescent PCR detection was used to analyze whole blood or genomic DNA samples. This method was compared with pyrosequencing and another quantitative (q)PCR kit for its accuracy, repeatability, detection range analysis, sensitivity, specificity, and anti-interference analysis. RESULTS The one-step real-time PCR method achieved a 100% accuracy rate compared with pyrosequencing and the other qPCR kit. When detecting different concentrations of known genes, concentrations of each sample ranging from 0.2 to 125 ng/µL could be correctly detected. The genotypes of samples treated with anticoagulants, including EDTA and sodium citrate, and chyle blood samples could be correctly detected. CONCLUSION The one-step detection method demonstrated high accuracy and a wide detection range. It also had high levels of repeatability, sensitivity, and specificity for the assessment of genomic DNA test samples.
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Affiliation(s)
- Ling-Jie Zheng
- 1 Fuwai Central China Cardiovascular Hospital, Zhengzhou, China
| | - Ning Liu
- 2 Coyote Bioscience Co., Ltd., Haidian District, Beijing, China
| | - Kun Yang
- 2 Coyote Bioscience Co., Ltd., Haidian District, Beijing, China
| | - Ai-Feng Wang
- 1 Fuwai Central China Cardiovascular Hospital, Zhengzhou, China
| | - Zhi-Rong Tan
- 3 Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China
| | - Xiang Li
- 2 Coyote Bioscience Co., Ltd., Haidian District, Beijing, China
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