Objective To identify the novel species ‘Mycobacterium fukienense＇ sp. nov of Mycobacterium chelonoe/abscessus complex from tuberculosis patients in Fujian Province, China. Methods Five of 27 clinical Mycobucterium ...Objective To identify the novel species ‘Mycobacterium fukienense＇ sp. nov of Mycobacterium chelonoe/abscessus complex from tuberculosis patients in Fujian Province, China. Methods Five of 27 clinical Mycobucterium isolates （CIs） were previously identified as M. chelonoe/obscessus complex by sequencing the hsp65, rpoB, 165-235 rRNA internal transcribed spacer region （its）, recA and sodA house-keeping genes commonly used to describe the molecular characteristics of Mycobocterium. Clinical Mycobecterium isolates were classified according to the gene sequence using a clustering analysis program. Sequence similarity within clusters and diversity between clusters were analyzed. Results The 5 isolates were identified with distinct sequences exhibiting 99.8% homology in the hsp65 gene. However, a complete lack of homology was observed among the sequences of the rpoB, 165-235 rRNA internal tronscribed spacer region （its）, sodA, and recA genes as compared with the M. obscessus. Furthermore, no match for rpoB, sodA, and recA genes was identified among the published sequences. Conclusion The novel species, Mycobacterium fukienense, is identified from tuberculosis patients in Fujian Province, China, which does not belong to any existing subspecies of M. cheloneo/abscessus complex.展开更多
Case 1 was a 49-year-old woman who visited with a dry cough. She had an underlying disease of lung adenocarcinoma and received cancer immunotherapy because of an ALK-positive response and several cancer chemotherapies...Case 1 was a 49-year-old woman who visited with a dry cough. She had an underlying disease of lung adenocarcinoma and received cancer immunotherapy because of an ALK-positive response and several cancer chemotherapies. The clinical effect was a complete response. Chest CT was performed because of continuous dry cough, and a new tumor shadow was recognized in the lingula portion of the left upper lobe. We performed CT-guided lung biopsy and could aspirate pus-fluid. The culture test for acid-fast bacilli was positive and the causative microorganism was identified as Mycobacterium avium by the DDH method. The final diagnosis was pulmonary abscess due to M. avium. Treatment using combined chemotherapy including CAM was performed and a good clinical response was obtained. Case 2 was a 67-year-old man who had a past history of surgical resection of lung adenocarcinoma eight and two years ago and received several cancer chemotherapies and radiation therapy. Because a new nodular shadow appeared in the right middle lobe one year ago and showed strong positivity on PET/CT, surgical resection was performed with the suspected recurrence of lung cancer. Subsequently, the histological diagnosis was epithelioid granuloma and a culture test of acid-fast bacilli was positive, with the identification of Mycobacterium intracellulare by the DDH method. Combined chemotherapy was not performed because the lesion was completely resected. Afterwards, a new nodular shadow appeared in the left lower lobe again and bronchoscopy was performed. Because M. intracellulare was isolated from the local specimen, we diagnosed the patient with recurrence of pulmonary MAC disease and combined chemotherapy including CAM was performed for one year. Finally, the nodular lesion disappeared. It is difficult to differentiate pulmonary MAC disease from lung cancer. Therefore, careful follow-up of patients with lung cancer while keeping in mind the possible complication of pulmonary MAC disease is necessary.展开更多
We present two cases of pulmonary MAC infection in women with Hürthle cell thyroid carcinoma. Both cases were asymptomatic octogenarian women with active Hürthle cell thyroid carcinoma and prolonged periods ...We present two cases of pulmonary MAC infection in women with Hürthle cell thyroid carcinoma. Both cases were asymptomatic octogenarian women with active Hürthle cell thyroid carcinoma and prolonged periods of hypothyroidism prior to diagnosis of pulmonary MAC. Mycobacterium avium complex has never been reported in association with any type of thyroid cancer, specifically Hürthle cell carcinoma. A review of the literature and possible associations between the two are discussed in this article.展开更多
Objective To compare clinical features and treatment outcomes of Mycobacterium abscessus (M.abscessus) and Mycobacterium massiliense (M.massiliense) pulmonary disease.Methods A retrospective analysis was performed for...Objective To compare clinical features and treatment outcomes of Mycobacterium abscessus (M.abscessus) and Mycobacterium massiliense (M.massiliense) pulmonary disease.Methods A retrospective analysis was performed for 42 patients diagnosed with M.abscessus complex pulmonary disease for the first time in Guangzhou Chest Hospital from January to September 2021.The age of the42 patients was 17-73 years.展开更多
Objective:To characterize mycobaclerium isolates from pulmomary tuberculosis suspected cases visiting National Tuberculosis Reference Laboratory at Ethiopian Health and Nutrition Research Institute,for diagnosis of pu...Objective:To characterize mycobaclerium isolates from pulmomary tuberculosis suspected cases visiting National Tuberculosis Reference Laboratory at Ethiopian Health and Nutrition Research Institute,for diagnosis of pulmonary tuberculosis from January 4 to February 22.2010 with total samples of 263.Methods:Sputum specimens were collected and processed:the deposits were cultured.Por culturing Lowenstein Jensen medium(LJ) and Mycobacteria Growth Indicator Tube(BACTEC MGIT 960) were used.Capilia Neo was used for detecting NTM isolates from isolates of BACTEC MGIT960.In Armauer Hansen Research Institute,Addis Ababa Ethiopia,Deletion typing PCR method for species identification(from confirmed Mycobacterium tuberculosis complex(MTBC) isolates by Capilia Neo) uas done.Results:Out of 263 enrolled in the study.124 and 117 ol them were positive for mycobaeterium growth by BACTEC MGIT 960 and 1.1 culture method,respectively.From BACTEC MGIT 960 positive media of 124 isolates.117 were randomly taken to perform Capilia TB Neo lest.From these 7(6%) of them were found to be NTM and 110(94%) were MTBC.From these 110 MTBC isolates,81 of them were randomly taken and run by the deletion typing RD9 PCR method of molecular technique.Out of these 78(96.3%) were found to be species of Mycobacterium tuberculosis and 3(3.7%) were found to be not in the MTBC.Regarding the types of methods of culture media.Mycobacteria Growth Indicator Tube(BACTEC MGIT 960) method was found to have excellent agreement(with kappa value ol 0.78) with the routine method of LJ.Conclusions:Pulmonary tuberculosis suspected cases visiting the National Tuberculosis Reference Laboratory at EHNR1 that were confirmed to be pulmonary tuberculosis are caused by the species of Mycobacterium tuberculosis.hence treatment regimen including pyrazinamide can be applied to the patients as the first choice in the study area in Addis Ababa.Ethiopia.There is indication of the presence of NTM in patients visiting the tuberculosis reference laboratory and this is important because NTM is known lo cause pulmonary disease similar with sign and symptom ol pulmonary tuberculosis but different in treatment.BACTEC MGIT 960 has excellent agreement with LJ media but it has high tendency of having high contamination rale unless a better decontamination method is designed.展开更多
Objective:To isolate and identify the exact species of the genus Mycobacterium from Didelphis(D.)virginiana,and the direct implications of this bacterium to public health and veterinary medicine.Methods:Thirty-one D.v...Objective:To isolate and identify the exact species of the genus Mycobacterium from Didelphis(D.)virginiana,and the direct implications of this bacterium to public health and veterinary medicine.Methods:Thirty-one D.virginiana were captured and necropsied in Hidalgo,Mexico.Tissue samples were collected to culture mycobacteria present and examine individual specimens’histopathology.Mycobacterium identification was obtained through the application of amplification and sequencing of 16S rDNA techniques.Results:Three strains were isolated and identified as Mycobacterium(M.)avium subsp.hominissuis by utilizing M.avium complexspecific primers.Granulomatous lesions were observed in the subpleural zone(granuloma gradeⅡ)and bronchial(granuloma gradeⅠ)of the lungs of D.virginiana with positive isolation.Conclusions:Three strains of M.avium subsp.hominissuis,from lung tissue samples of D.virginiana were identified.This subspecies of M.avium has important implications in public health and veterinary medicine.展开更多
基金supported by the National Key Programme of Mega Infectious Diseases (2008ZX100/03-010-02)the National Natural Science Funding of China (30800029)
文摘Objective To identify the novel species ‘Mycobacterium fukienense＇ sp. nov of Mycobacterium chelonoe/abscessus complex from tuberculosis patients in Fujian Province, China. Methods Five of 27 clinical Mycobucterium isolates （CIs） were previously identified as M. chelonoe/obscessus complex by sequencing the hsp65, rpoB, 165-235 rRNA internal transcribed spacer region （its）, recA and sodA house-keeping genes commonly used to describe the molecular characteristics of Mycobocterium. Clinical Mycobecterium isolates were classified according to the gene sequence using a clustering analysis program. Sequence similarity within clusters and diversity between clusters were analyzed. Results The 5 isolates were identified with distinct sequences exhibiting 99.8% homology in the hsp65 gene. However, a complete lack of homology was observed among the sequences of the rpoB, 165-235 rRNA internal tronscribed spacer region （its）, sodA, and recA genes as compared with the M. obscessus. Furthermore, no match for rpoB, sodA, and recA genes was identified among the published sequences. Conclusion The novel species, Mycobacterium fukienense, is identified from tuberculosis patients in Fujian Province, China, which does not belong to any existing subspecies of M. cheloneo/abscessus complex.
文摘Case 1 was a 49-year-old woman who visited with a dry cough. She had an underlying disease of lung adenocarcinoma and received cancer immunotherapy because of an ALK-positive response and several cancer chemotherapies. The clinical effect was a complete response. Chest CT was performed because of continuous dry cough, and a new tumor shadow was recognized in the lingula portion of the left upper lobe. We performed CT-guided lung biopsy and could aspirate pus-fluid. The culture test for acid-fast bacilli was positive and the causative microorganism was identified as Mycobacterium avium by the DDH method. The final diagnosis was pulmonary abscess due to M. avium. Treatment using combined chemotherapy including CAM was performed and a good clinical response was obtained. Case 2 was a 67-year-old man who had a past history of surgical resection of lung adenocarcinoma eight and two years ago and received several cancer chemotherapies and radiation therapy. Because a new nodular shadow appeared in the right middle lobe one year ago and showed strong positivity on PET/CT, surgical resection was performed with the suspected recurrence of lung cancer. Subsequently, the histological diagnosis was epithelioid granuloma and a culture test of acid-fast bacilli was positive, with the identification of Mycobacterium intracellulare by the DDH method. Combined chemotherapy was not performed because the lesion was completely resected. Afterwards, a new nodular shadow appeared in the left lower lobe again and bronchoscopy was performed. Because M. intracellulare was isolated from the local specimen, we diagnosed the patient with recurrence of pulmonary MAC disease and combined chemotherapy including CAM was performed for one year. Finally, the nodular lesion disappeared. It is difficult to differentiate pulmonary MAC disease from lung cancer. Therefore, careful follow-up of patients with lung cancer while keeping in mind the possible complication of pulmonary MAC disease is necessary.
文摘We present two cases of pulmonary MAC infection in women with Hürthle cell thyroid carcinoma. Both cases were asymptomatic octogenarian women with active Hürthle cell thyroid carcinoma and prolonged periods of hypothyroidism prior to diagnosis of pulmonary MAC. Mycobacterium avium complex has never been reported in association with any type of thyroid cancer, specifically Hürthle cell carcinoma. A review of the literature and possible associations between the two are discussed in this article.
文摘Objective To compare clinical features and treatment outcomes of Mycobacterium abscessus (M.abscessus) and Mycobacterium massiliense (M.massiliense) pulmonary disease.Methods A retrospective analysis was performed for 42 patients diagnosed with M.abscessus complex pulmonary disease for the first time in Guangzhou Chest Hospital from January to September 2021.The age of the42 patients was 17-73 years.
文摘Objective:To characterize mycobaclerium isolates from pulmomary tuberculosis suspected cases visiting National Tuberculosis Reference Laboratory at Ethiopian Health and Nutrition Research Institute,for diagnosis of pulmonary tuberculosis from January 4 to February 22.2010 with total samples of 263.Methods:Sputum specimens were collected and processed:the deposits were cultured.Por culturing Lowenstein Jensen medium(LJ) and Mycobacteria Growth Indicator Tube(BACTEC MGIT 960) were used.Capilia Neo was used for detecting NTM isolates from isolates of BACTEC MGIT960.In Armauer Hansen Research Institute,Addis Ababa Ethiopia,Deletion typing PCR method for species identification(from confirmed Mycobacterium tuberculosis complex(MTBC) isolates by Capilia Neo) uas done.Results:Out of 263 enrolled in the study.124 and 117 ol them were positive for mycobaeterium growth by BACTEC MGIT 960 and 1.1 culture method,respectively.From BACTEC MGIT 960 positive media of 124 isolates.117 were randomly taken to perform Capilia TB Neo lest.From these 7(6%) of them were found to be NTM and 110(94%) were MTBC.From these 110 MTBC isolates,81 of them were randomly taken and run by the deletion typing RD9 PCR method of molecular technique.Out of these 78(96.3%) were found to be species of Mycobacterium tuberculosis and 3(3.7%) were found to be not in the MTBC.Regarding the types of methods of culture media.Mycobacteria Growth Indicator Tube(BACTEC MGIT 960) method was found to have excellent agreement(with kappa value ol 0.78) with the routine method of LJ.Conclusions:Pulmonary tuberculosis suspected cases visiting the National Tuberculosis Reference Laboratory at EHNR1 that were confirmed to be pulmonary tuberculosis are caused by the species of Mycobacterium tuberculosis.hence treatment regimen including pyrazinamide can be applied to the patients as the first choice in the study area in Addis Ababa.Ethiopia.There is indication of the presence of NTM in patients visiting the tuberculosis reference laboratory and this is important because NTM is known lo cause pulmonary disease similar with sign and symptom ol pulmonary tuberculosis but different in treatment.BACTEC MGIT 960 has excellent agreement with LJ media but it has high tendency of having high contamination rale unless a better decontamination method is designed.
基金the financial assistance from the Secretary of Research of Universidad Autónoma del Estado de Hidalgo(UAEH)through the project“Epidemiological surveillance of the genus Mycobacterium in the species Didelphis virginiana(Tlacuache)of the valley of Tulancingo Hidalgo”with number UAEH/DI/ICAp/MVZ/6.
文摘Objective:To isolate and identify the exact species of the genus Mycobacterium from Didelphis(D.)virginiana,and the direct implications of this bacterium to public health and veterinary medicine.Methods:Thirty-one D.virginiana were captured and necropsied in Hidalgo,Mexico.Tissue samples were collected to culture mycobacteria present and examine individual specimens’histopathology.Mycobacterium identification was obtained through the application of amplification and sequencing of 16S rDNA techniques.Results:Three strains were isolated and identified as Mycobacterium(M.)avium subsp.hominissuis by utilizing M.avium complexspecific primers.Granulomatous lesions were observed in the subpleural zone(granuloma gradeⅡ)and bronchial(granuloma gradeⅠ)of the lungs of D.virginiana with positive isolation.Conclusions:Three strains of M.avium subsp.hominissuis,from lung tissue samples of D.virginiana were identified.This subspecies of M.avium has important implications in public health and veterinary medicine.
