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Donkeng Donfack VF, Fokou TAZ, Wadje LEN, Le Grand Napa Tchuedji Y, Djieugoue YJ, Nguimfack Teagho S, Shile Takong B, Assolo YP, Ongboulal SM, Simo YWK, Awungafac SN, Eyangoh S. Profile of non-tuberculous mycobacteria amongst tuberculosis presumptive people in Cameroon. BMC Microbiol 2024; 24:100. [PMID: 38532357 DOI: 10.1186/s12866-024-03256-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 03/08/2024] [Indexed: 03/28/2024] Open
Abstract
BACKGROUND Cameroon is a tuberculosis (TB) burden country with a 12% positivity among TB presumptive cases. Of the presumptive cases with a negative TB test, some are infected with Non-tuberculous Mycobacteria (NTM). However, the diagnosis of NTM infections remains difficult due to the lack of tools in many laboratories, particularly in resource limited laboratories and remote setting. The present study was undertaken to determine NTM profile and associated comorbidities among TB presumptive people. METHODS A retrospective study was conducted from December 2018 to December 2019 in the Tuberculosis-National Reference Laboratory (TB-NRL) for Bacteriological analysis of samples and Jamot Hospital of Yaounde (JHY) for clinical evaluation of confirmed NTM patients. We included in this study data of 5267 TB presumptive people previously diagnosed using three consecutive samples and having culture and SD Bioline results with or without Microscopy and reverse hybridization-based Line Probe Assay(LPA) results. The data on co-morbidities or history of people infected with NTM were then collected from the three participants with available clinical data. RESULTS We collected data of 5267 presumptive TB people. Among them, 3436 (65.24%), have a positive culture with 3200 (60.75%) isolates belong to Mycobacterium tuberculosis Complex (MBTC) and 236 (4.48%) to NTM. Our results showed that, 123 (52.11%) NTM were isolated from people with negative microscopy and 113 (47.88%) from people with positive microscopy. Among the 236 NTM, 108 (45.8%) isolates were identified using LPA. M. fortuitum was the most represented species (32.41%) followed by M. intracellulare (19.44%). Sputum had the highest proportion of NTM (56%), followed by bronchial aspirations (31%). The extra-pulmonary samples presented lower proportions of isolates compared to pulmonary samples. Some patients affected with NTM presented comorbidities as HIV infection, Pulmonary tuberculosis, Type 2 diabetes, Chronic bronchitis and Alveolar pneumonia. CONCLUSIONS Our study showed the presence of NTM strains among presumptive TB people with a predominance of M. fortuitum and M. intracellulare. It is important to implement a surveillance system of NTM in TB burden country and also to develop a point-of-care test for NTM identification in limited-resource settings.
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Affiliation(s)
| | | | - Lazare Eric Noche Wadje
- Department of Microbiology, Haematology and Infectious Diseases, Faculty of Medicine and Biomedical Sciences, University of Yaounde I, Yaounde, Cameroon
| | - Yves Le Grand Napa Tchuedji
- Mycobacteriology Unit, National Tuberculosis Reference Laboratory, Centre Pasteur du Cameroun, Yaounde, Cameroon
| | - Yvonne Josiane Djieugoue
- Mycobacteriology Unit, National Tuberculosis Reference Laboratory, Centre Pasteur du Cameroun, Yaounde, Cameroon
| | - Sorelle Nguimfack Teagho
- Mycobacteriology Unit, National Tuberculosis Reference Laboratory, Centre Pasteur du Cameroun, Yaounde, Cameroon
| | - Brenda Shile Takong
- Mycobacteriology Unit, National Tuberculosis Reference Laboratory, Centre Pasteur du Cameroun, Yaounde, Cameroon
| | - Yannick Patrick Assolo
- Mycobacteriology Unit, National Tuberculosis Reference Laboratory, Centre Pasteur du Cameroun, Yaounde, Cameroon
| | - Suzanne Magloire Ongboulal
- Mycobacteriology Unit, National Tuberculosis Reference Laboratory, Centre Pasteur du Cameroun, Yaounde, Cameroon
| | - Yannick Willy Kamdem Simo
- Mycobacteriology Unit, National Tuberculosis Reference Laboratory, Centre Pasteur du Cameroun, Yaounde, Cameroon
| | - Stanley Nkemnji Awungafac
- Mycobacteriology Unit, National Tuberculosis Reference Laboratory, Centre Pasteur du Cameroun, Yaounde, Cameroon
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Rostami Z, Cegolon L, Jafari NJ, Gholami N, Mousavi SV, Allahyari F, Azami A, Javanbakht M. A rare case of coexistence of Wegener's granulomatosis and pulmonary tuberculosis with subsequent development of thrombosis of the cerebral veins. BMC Infect Dis 2021; 21:948. [PMID: 34521368 PMCID: PMC8442395 DOI: 10.1186/s12879-021-06583-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 08/17/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Granulomatosis with polyangiitis (GPA), also known as Wegener's granulomatosis, is an idiopathic systemic disease typically affecting the lungs, although other organs may also be involved. CASE PRESENTATION A 28-year-old male was admitted to Baqiyatallah university hospital in Teheran (Iran) after a 3-week history of fever and productive cough. The patient gradually developed fatigue, arthralgia, hematuria, nausea, vomiting, dyspnea, hemoptysis, weight loss, oliguria and then anuria. Chest-X-ray (CXR) and computerized tomography scan revealed cavitating nodular opacities in the right lung lobe. Furthermore, plasma creatinine increased from 2.2 to 4 mg/dl in a few days. Histopathological examination of kidney biopsy revealed peri-glomerular and peri-vascular inflammation, degeneration and necrosis of the tubular epithelial lining, red blood cell casts, distorted glomerular structure, fibrin thrombi, segmental breaks of the glomerular basal membrane, disruption of Bowman's capsular membrane and crescent formation of the affected glomeruli. An abnormal CXR, an abnormal urinary sediment and a typical kidney histology were used as criteria to diagnose glomerulonefritis with poliangiitis (GPA). Bronchoalveolar lavage smear and PCR turned out positive for mycobacterium tuberculosis. After 3 months of treatment for (GPA) and tuberculosis the patient developed headache and seizure. Cerebral Magnetic Resonance Venography revealed cerebral venous thrombosis of the sinus transverse and sigmoid. CONCLUSIONS Tuberculosis may coexist with GPA, as it occurred in our patient. Since a crescentic glomerulonephritis can progress to renal failure, clinicians should always be aware of potential multiple conditions when considering differential diagnoses.
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Affiliation(s)
- Zohreh Rostami
- Nephrology and Urology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Luca Cegolon
- Public Health Department, Local Health Unit N. 2 "Marca Trevigiana", Treviso, Italy
| | - Nematollah Jonaidi Jafari
- Health Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Nasrin Gholami
- Hematology Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Seyed Vahid Mousavi
- Atherosclerosis Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Fakhri Allahyari
- Neuroscience Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Atena Azami
- Department of Pathology, School of Medicine, Alborz University of Medical Sciences, Alborz, Iran
| | - Mohammad Javanbakht
- Nephrology and Urology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
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Kim DW, Weon KY. Pharmaceutical application and development of fixed-dose combination: dosage form review. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2021. [DOI: 10.1007/s40005-021-00543-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Analysis of Differentially Expressed Proteins in Mycobacterium avium-Infected Macrophages Comparing with Mycobacterium tuberculosis-Infected Macrophages. BIOMED RESEARCH INTERNATIONAL 2017; 2017:5103803. [PMID: 28573139 PMCID: PMC5442340 DOI: 10.1155/2017/5103803] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 02/21/2017] [Accepted: 03/06/2017] [Indexed: 11/18/2022]
Abstract
Mycobacterium avium (MA) belongs to the intracellular parasitic bacteria. To better understand how MA survives within macrophages and the different pathogenic mechanisms of MA and Mycobacterium tuberculosis (MTB), tandem mass tag (TMT) and liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis have been used to determine the proteins which are differentially expressed in MA-infected and MTB-infected macrophages. 369 proteins were found to be differentially expressed in MA-infected cells but not in MTB-infected cells. By using certain bioinformatics methods, we found the 369 proteins were involved in molecular function, biological process, and cellular component including binding, catalytic activity, metabolic process, cellular process, and cell part. In addition, some identified proteins were involved in multiple signaling pathways. These results suggest that MA probably survive within macrophages by affecting the expression of some crucial proteins.
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Su H, Li Z, Dong Y, Jiang HX, Zheng HM, Du YH, Wu J, Wang ZB. Damage Effects on Bacille Calmette-Guérin by Low-Frequency, Low-Intensity Ultrasound: A Pilot Study. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2016; 35:581-587. [PMID: 26887448 DOI: 10.7863/ultra.14.11056] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 07/06/2015] [Indexed: 06/05/2023]
Abstract
OBJECTIVES To perform an in vitro experimental study of the possible damage effects on Bacille Calmette-Guérin (BCG) by low-frequency (42-kHz) ultrasound (US) irradiation at low spatially and temporally averaged intensities and different exposure times. METHODS A 2-mL BCG suspension was added to the wells of a 24-well cell culture plate. Then the samples were randomly divided into 4 groups, each group including 3 wells, with group 1 as a control group and groups 2, 3, and 4, as US treatment groups. The samples for groups 2, 3, and 4 were irradiated with US at 0.13 W/cm(2) for 5 minutes, 0.13 W/cm(2) for 15 minutes, and 1.53 W/cm(2) for 15 minutes, respectively. After irradiation, the temperature, ratio of damage, and structure of the bacteria were examined. The cavitation effect of the device was detected by the passive cavitation detection method. RESULTS After US irradiation at the different doses (intensity and exposure time), no significant temperature change was found in all sample suspensions. The ratio of bacterial damage tested by flow cytometry and the optical density of the suspensions as assayed by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide colorimetric method showed that the US-irradiated groups were significantly different from the control group. The BCG damage ratio reached 28% at the intensity of 1.53 W/cm(2). Transmission electron microscopic results showed that the bacterial structure of BCG could be destroyed by low-frequency, low-intensity US. CONCLUSIONS Low-frequency, low-intensity US can cause acute injury to BCG, and the degree of injury is closely correlated with the US dose applied.
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Affiliation(s)
- Hang Su
- State Key Laboratory of Ultrasound Engineering in Medicine, Cofounded by Chongqing and the Ministry of Science and Technology, Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China (H.S., Z.L., Y.D., H.-Z.J., H.-M.Z, Y.-H.D., Z-.B.W.); and Department of Physics, University of Vermont, Burlington, Vermont USA (J.W.)
| | - Zhe Li
- State Key Laboratory of Ultrasound Engineering in Medicine, Cofounded by Chongqing and the Ministry of Science and Technology, Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China (H.S., Z.L., Y.D., H.-Z.J., H.-M.Z, Y.-H.D., Z-.B.W.); and Department of Physics, University of Vermont, Burlington, Vermont USA (J.W.)
| | - Yuan Dong
- State Key Laboratory of Ultrasound Engineering in Medicine, Cofounded by Chongqing and the Ministry of Science and Technology, Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China (H.S., Z.L., Y.D., H.-Z.J., H.-M.Z, Y.-H.D., Z-.B.W.); and Department of Physics, University of Vermont, Burlington, Vermont USA (J.W.)
| | - He-Xun Jiang
- State Key Laboratory of Ultrasound Engineering in Medicine, Cofounded by Chongqing and the Ministry of Science and Technology, Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China (H.S., Z.L., Y.D., H.-Z.J., H.-M.Z, Y.-H.D., Z-.B.W.); and Department of Physics, University of Vermont, Burlington, Vermont USA (J.W.)
| | - Hui-Min Zheng
- State Key Laboratory of Ultrasound Engineering in Medicine, Cofounded by Chongqing and the Ministry of Science and Technology, Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China (H.S., Z.L., Y.D., H.-Z.J., H.-M.Z, Y.-H.D., Z-.B.W.); and Department of Physics, University of Vermont, Burlington, Vermont USA (J.W.)
| | - Yong-Hong Du
- State Key Laboratory of Ultrasound Engineering in Medicine, Cofounded by Chongqing and the Ministry of Science and Technology, Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China (H.S., Z.L., Y.D., H.-Z.J., H.-M.Z, Y.-H.D., Z-.B.W.); and Department of Physics, University of Vermont, Burlington, Vermont USA (J.W.).
| | - Junru Wu
- State Key Laboratory of Ultrasound Engineering in Medicine, Cofounded by Chongqing and the Ministry of Science and Technology, Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China (H.S., Z.L., Y.D., H.-Z.J., H.-M.Z, Y.-H.D., Z-.B.W.); and Department of Physics, University of Vermont, Burlington, Vermont USA (J.W.)
| | - Zhi-Biao Wang
- State Key Laboratory of Ultrasound Engineering in Medicine, Cofounded by Chongqing and the Ministry of Science and Technology, Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China (H.S., Z.L., Y.D., H.-Z.J., H.-M.Z, Y.-H.D., Z-.B.W.); and Department of Physics, University of Vermont, Burlington, Vermont USA (J.W.)
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Nour-Neamatollahie A, Ebrahimzadeh N, Siadat SD, Vaziri F, Eslami M, Akhavan Sepahi A, Khanipour S, Masoumi M, Sakhaee F, Ghazanfari Jajin M, Bahrmand A, Fateh A. Distribution of non-tuberculosis mycobacteria strains from suspected tuberculosis patients by heat shock protein 65 PCR-RFLP. Saudi J Biol Sci 2016; 24:1380-1386. [PMID: 28855835 PMCID: PMC5562452 DOI: 10.1016/j.sjbs.2016.02.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Revised: 01/24/2016] [Accepted: 02/01/2016] [Indexed: 12/03/2022] Open
Abstract
The genus Mycobacterium contains more than 150 species. Non-tuberculosis mycobacteria (NTM) often cause extrapulmonary and pulmonary disease. Mycobacteria detection at species level is necessary and provides useful information on epidemiology and facilitates successful treatment of patients. This retrospective study aimed to determine the incidence of the NTM isolates and Mycobacterium tuberculosis (Mtb) in clinical specimens collected from Iranian patients during February 2011–December 2013, by PCR–restriction fragment length polymorphism analysis (PRA) of the hsp65 gene. We applied conventional biochemical test and hsp65–PRA identification assay to identify species of mycobacteria in specimens from patients suspected of having mycobacterial isolates. This method was a sensitive, specific and effective assay for detecting mycobacterial species and had a 100% sensitivity and specificity for Mtb and Mycobacterium avium complex (MAC) species. Using PRA for 380 mycobacterial selected isolates, including 317 Mtb, four Mycobacterium bovis and of the 59 clinical isolates, the most commonly identified organism was Mycobacterium kansasii (35.6%), followed by Mycobacterium simiae (16.9%), Mycobacterium gordonae (16.9%), Mycobacterium fortuitum (5.1%), Mycobacterium intracellulare (5.1%), Mycobacterium avium (5.1%), Mycobacterium scrofulaceum (3.4%), Mycobacterium gastri (3.4%), Mycobacterium flavescens (3.4%), Mycobacterium chelonae (3.4%) and Mycobacterium nonchromogenicum (1.7%). PRA method, in comparison with classical methods, is rapid, useful and sensitive for the phylogenetic analysis and species detection of mycobacterial strains. Mycobacterium kansasii is the most common cause of infection by NTM in patients with non-HIV and HIV which demonstrated a high outbreak and diversity of NTM strains in our laboratory.
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Affiliation(s)
- Ali Nour-Neamatollahie
- Departments of Mycobacteriology & Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran.,Department of Microbiology, College of Basic Science, Islamic Azad University, Tehran North Branch, Tehran, Iran
| | - Nayereh Ebrahimzadeh
- Departments of Mycobacteriology & Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran
| | - Seyed Davar Siadat
- Departments of Mycobacteriology & Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran.,Microbiology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Farzam Vaziri
- Departments of Mycobacteriology & Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran.,Microbiology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Mona Eslami
- Young Researchers and Elite Club, Karaj Branch, Islamic Azad University, Karaj, Iran
| | - Abbas Akhavan Sepahi
- Department of Microbiology, College of Basic Science, Islamic Azad University, Tehran North Branch, Tehran, Iran
| | - Sharareh Khanipour
- Departments of Mycobacteriology & Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran
| | - Morteza Masoumi
- Departments of Mycobacteriology & Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran
| | - Fatemeh Sakhaee
- Departments of Mycobacteriology & Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran
| | | | - Ahmadreza Bahrmand
- Departments of Mycobacteriology & Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran
| | - Abolfazl Fateh
- Departments of Mycobacteriology & Pulmonary Research, Pasteur Institute of Iran, Tehran, Iran.,Microbiology Research Center, Pasteur Institute of Iran, Tehran, Iran
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Shimomura H, Andachi S, Aono T, Kigure A, Yamamoto Y, Miyajima A, Hirota T, Imanaka K, Majima T, Masuyama H, Tatsumi K, Aoyama T. Serum concentrations of clarithromycin and rifampicin in pulmonary Mycobacterium avium complex disease: long-term changes due to drug interactions and their association with clinical outcomes. J Pharm Health Care Sci 2015; 1:32. [PMID: 26819743 PMCID: PMC4728759 DOI: 10.1186/s40780-015-0029-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 10/22/2015] [Indexed: 01/15/2023] Open
Abstract
Background Concomitant use of clarithromycin (CAM) and rifampicin (RFP) for the treatment of pulmonary Mycobacterium avium complex (MAC) disease affects the systemic concentrations of both drugs due to CYP3A4–related interactions. To date, however, there has been no report that investigates the long–term relationship between the drug concentrations, CYP3A4 activity, and clinical outcomes. Our aim was to investigate the time course of the drug levels in long–term treatment of subjects with pulmonary MAC disease, and examine the correlation of these concentrations with CYP3A4 activity and clinical outcomes. Methods Urine and blood samples from nine outpatients with pulmonary MAC disease were collected on days 1, 15, and 29 (for four subjects, sample collections were continued on days 57, 85, 113, 141, 169, 225, 281, 337, and 365). Serum drug concentrations and urinary levels of endogenous cortisol (F) and 6 beta-hydroxycortisol (6βOHF), the metabolite of F by CYP3A4, were measured, and evaluated 6βOHF/F ratio as a CYP3A4 activity marker. In addition, the clinical outcomes of 4 subjects were evaluated based on examination of sputum cultures and chest images. Results The mean 6βOHF/F ratio increased from 2.63 ± 0.85 (n = 9) on the first day to 6.96 ± 1.35 on day 15 and maintained a level more than double initial value thereafter. The serum CAM concentration decreased dramatically from an initial 2.28 ± 0.61 μg/mL to 0.73 ± 0.23 μg/mL on day 15. In contrast, the serum concentration of 14-hydroxy-CAM (M-5), the major metabolite of CAM, increased 2.4-fold by day 15. Thereafter, both CAM and M-5 concentrations remained constant until day 365. The explanation for the low levels of serum CAM in pulmonary MAC disease patients is that RFP-mediated CYP3A4 induction reached a maximum by day 15 and remained high thereafter. Sputum cultures of three of four subjects converted to negative, but relapse occurred in all three cases. Conclusions Our study demonstrated that serum CAM concentrations in pulmonary MAC disease patients were continuously low because of RFP-mediated CYP3A4 induction, which may be responsible for the unsatisfactory clinical outcomes.
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Affiliation(s)
- Hitoshi Shimomura
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510 Japan
| | - Sena Andachi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510 Japan
| | - Takahiro Aono
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510 Japan
| | - Akira Kigure
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510 Japan
| | - Yosuke Yamamoto
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510 Japan
| | - Atsushi Miyajima
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510 Japan
| | - Takashi Hirota
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510 Japan
| | - Keiko Imanaka
- Department of Pharmacy, Chemotherapy Research Institute, Kaken Hospital, 6-1-14 Konodai, Ichikawa, Chiba 272-0827 Japan
| | - Toru Majima
- Department of Respiratory medicine, Chemotherapy Research Institute, Kaken Hospital, 6-1-14 Konodai, Ichikawa, Chiba 272-0827 Japan
| | - Hidenori Masuyama
- Department of Respiratory medicine, Chemotherapy Research Institute, Kaken Hospital, 6-1-14 Konodai, Ichikawa, Chiba 272-0827 Japan
| | - Koichiro Tatsumi
- Department of Respirology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670 Japan
| | - Takao Aoyama
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510 Japan
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Shimomura H, Ono A, Imanaka K, Majima T, Masuyama H, Sato T, Aoyama T. Retrospective investigation of combination therapy with clarithromycin and levofloxacin for pulmonary Mycobacterium avium complex disease. J Pharm Health Care Sci 2015; 1:24. [PMID: 26819735 PMCID: PMC4728750 DOI: 10.1186/s40780-015-0025-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 08/20/2015] [Indexed: 01/15/2023] Open
Abstract
Background Fluoroquinolones are often used for the treatment of refractory Mycobacterium avium complex (MAC) disease when the clinical efficacy of the recommended regimen, which includes clarithromycin (CAM), rifampicin (RFP), and ethambutol (EB), is insufficient. However, recent in vitro and in vivo studies have suggested that fluoroquinolones decreased the antibacterial activity of CAM when they were administered in combination. In this study, we retrospectively investigated the influence of the combination of CAM and levofloxacin (LVFX) on clinical outcomes for pulmonary MAC disease patients. Methods Pulmonary MAC disease patients from 2010 to 2012 were divided into two groups, those who received LVFX together with CAM (LVFX group) and those who received CAM without LVFX (control group). The number of patients who showed improvement was evaluated at 1, 3, 6 and 12 months after the start of therapy based on bacteriological examination (culture and smear examination) and the bacilli negative conversion rate. Results There were no significant differences between the LVFX group (n = 18, 64.5 ± 6.5 years old) and the control group (n = 57, 71.0 ± 7.0 years old) in terms of gender, age, etiologic agent, baseline culture examination score, concomitant medication, and dosage of each drug. The clinical outcomes in the LVFX group were inferior to those in the control group at all endpoints and observational periods, and we found a significant difference in the percent improvement of the smear examination by fluorescence microscopy method (38 % vs. 83 %) and the bacilli negative conversion rate (38 % vs. 79 %) at 3 months. Our study suggests that the combination of CAM and LVFX causes unfavorable clinical outcomes for pulmonary MAC disease treatment. There was no significant difference between both groups in terms of frequency of adverse events. Conclusion The possibility that combined administration of CAM and LVFX causes unfavorable clinical outcomes for pulmonary MAC disease treatment was suggested.
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Affiliation(s)
- Hitoshi Shimomura
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510 Japan
| | - Airi Ono
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510 Japan
| | - Keiko Imanaka
- Department of Pharmacy, Chemotherapy Research Institute, Kaken Hospital, 6-1-14 Konodai, Ichikawa, Chiba 272-0827 Japan
| | - Toru Majima
- Department of Respiratory medicine, Chemotherapy Research Institute, Kaken Hospital, 6-1-14 Konodai, Ichikawa, Chiba 272-0827 Japan
| | - Hidenori Masuyama
- Department of Respiratory medicine, Chemotherapy Research Institute, Kaken Hospital, 6-1-14 Konodai, Ichikawa, Chiba 272-0827 Japan
| | - Tsugumichi Sato
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510 Japan
| | - Takao Aoyama
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510 Japan
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Esposito S, Bianchini S, Blasi F. Bedaquiline and delamanid in tuberculosis. Expert Opin Pharmacother 2015; 16:2319-30. [DOI: 10.1517/14656566.2015.1080240] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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10
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Aimaiti R, Qin L, Cao T, Yang H, Wang J, Lu J, Huang X, Hu Z. Identification and application of ssDNA aptamers against H₃₇Rv in the detection of Mycobacterium tuberculosis. Appl Microbiol Biotechnol 2015; 99:9073-83. [PMID: 26194558 DOI: 10.1007/s00253-015-6815-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 06/30/2015] [Accepted: 07/02/2015] [Indexed: 01/09/2023]
Abstract
Microscopy of direct smear with the Ziehl-Neelsen stain is still broadly used in tuberculosis diagnosis. However, this method suffers from low specificity and is difficult to distinguish Mycobacterium tuberculosis (MTB) from nontuberculosis mycobacterial (NTM), since all mycobacterial species are positive in Ziehl-Neelsen stain. In this study, we utilized whole cell SELEX to obtain species-specific aptamers for increasing the specificity of MTB detection. Whole cell SELEX was performed in MTB reference strain H37Rv by two selection processes based on enzyme-linked plate or Eppendorf tube, respectively. To increase success rate of generating aptamers, the selection processes were systematically monitored to understand the dynamic evolution of aptamers against complex structure of target bacteria. Two preponderant groups and ten high-affinity aptamers were obtained by analyzing the dynamic evolution. Preponderant aptamer MA1 from group I showed relatively high binding affinity with apparent dissociation constant (KD value) of 12.02 nM. Sandwich ELISA assay revealed five aptamer combinations effectively bound MTB strains in preliminary evaluation, especially the combination based on aptamer MA2 (another preponderant aptamer from group II) and MA1. Further evaluated in many other strains, MA2/MA1 combination effectively identified MTB from NTM or other pathogenic bacteria, and displayed the high specificity and sensitivity. Binding analysis of aptamer MA1 or MA2 by fluorescence microscopy observation showed high binding reactivity with H37Rv, low apparent cross-reactivity with M. marinum, and no apparent cross-reactivity with Enterobacter cloacae. Taken together, this study provides attractive candidate species-specific aptamers to effectively capture or discriminate MTB strains.
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Affiliation(s)
- Rusitanmujiang Aimaiti
- Shanghai Key Laboratory of Tuberculosis, Clinic and Research Center of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, 507 Zhengmin Road, Shanghai, 200433, China
| | - Lianhua Qin
- Shanghai Key Laboratory of Tuberculosis, Clinic and Research Center of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, 507 Zhengmin Road, Shanghai, 200433, China
| | - Ting Cao
- Shanghai Key Laboratory of Tuberculosis, Clinic and Research Center of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, 507 Zhengmin Road, Shanghai, 200433, China
| | - Hua Yang
- Shanghai Key Laboratory of Tuberculosis, Clinic and Research Center of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, 507 Zhengmin Road, Shanghai, 200433, China
| | - Jie Wang
- Shanghai Key Laboratory of Tuberculosis, Clinic and Research Center of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, 507 Zhengmin Road, Shanghai, 200433, China
| | - Junmei Lu
- Shanghai Key Laboratory of Tuberculosis, Clinic and Research Center of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, 507 Zhengmin Road, Shanghai, 200433, China
| | - Xiaochen Huang
- Shanghai Key Laboratory of Tuberculosis, Clinic and Research Center of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, 507 Zhengmin Road, Shanghai, 200433, China
| | - Zhongyi Hu
- Shanghai Key Laboratory of Tuberculosis, Clinic and Research Center of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, 507 Zhengmin Road, Shanghai, 200433, China.
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