scholarly journals Performance of Mycobacterium Growth Indicator Tube BACTEC 960 with Lowenstein–Jensen method for diagnosis of Mycobacterium tuberculosis at Ethiopian National Tuberculosis Reference Laboratory, Addis Ababa, Ethiopia

2017 ◽  
Vol 10 (1) ◽  
Author(s):  
Getu Diriba ◽  
Abebaw Kebede ◽  
Zelalem Yaregal ◽  
Muluwork Getahun ◽  
Mengistu Tadesse ◽  
...  
2013 ◽  
Vol 58 (1) ◽  
pp. 590-592 ◽  
Author(s):  
Sönke Andres ◽  
Doris Hillemann ◽  
Sabine Rüsch-Gerdes ◽  
Elvira Richter

ABSTRACTFour out of 143 phenotypically isoniazid-resistant but rifampin-susceptibleMycobacterium tuberculosisstrains that were isolated from patients in Germany in 2011 had mutations in the rifampin resistance-determining region ofrpoB. After performing drug susceptibility testing (DST) with two methods, the proportion method on Löwenstein-Jensen medium and using the Bactec 960 Mycobacteria Growth Indicator Tube system, we conclude that the two methods are equally reliable for phenotypic DST and MIC determination.


2017 ◽  
Vol 6 (1) ◽  
Author(s):  
Sharana Mahomed ◽  
Nomonde R. Dlamini-Mvelase ◽  
Moses Dlamini ◽  
Koleka Mlisana

For the optimal recovery of Mycobacterium tuberculosis from the BACTEC™ Mycobacterium Growth Indicator Tube 960™ system, an incubation period of 42–56 days is recommended by the manufacturer. Due to logistical reasons, it is common practice to follow an incubation period of 42 days. We undertook a retrospective study to document positive Mycobacterium Growth Indicator Tube cultures beyond the 42-day incubation period. In total, 98/110 (89%) were positive for M. tuberculosis complex. This alerted us to M. tuberculosis growth detection failure at 42 days.


Author(s):  
Retno Wahyuningrum ◽  
Ritmaleni Ritmaleni ◽  
Tatang Irianti ◽  
Subagus Wahyuono ◽  
Takushi Kaneko

 Objective: The increasing incidence of multidrug-resistant tuberculosis (TB) has created a need to discover a new anti-TB drug candidates. The aim of this study was to screen extract and fractions of Tinospora crispa for activity against Mycobacterium tuberculosis H37Rv.Methods: The dried and pulverized T. crispa stem was extracted by maceration method using ethanol (96%). The anti-TB activity was carried out using mycobacteria growth indicator tube (MGIT) system and agar proportion method with Lowenstein–Jensen (LJ) medium.Result: The result of this study showed that ethanolic extract and fractions of T. Crispa did not exhibit anti-TB activity in the range of 100–1000 μg/ml with MGIT method, while with agar proportion method, there were M. tuberculosis colonies growth on the LJ containing 1000 μg/ml extract slants.Conclusion: The tested extract and fractions of T. crispa have no anti-TB activity against M. tuberculosis until 1000 μg/ml.


2001 ◽  
Vol 45 (6) ◽  
pp. 1934-1936 ◽  
Author(s):  
Ivan Bastian ◽  
Leen Rigouts ◽  
Juan Carlos Palomino ◽  
Françoise Portaels

ABSTRACT Two novel systems were evaluated for performing indirect kanamycin susceptibility tests on 72 strains of Mycobacterium tuberculosis. The microplate Alamar blue colorimetric method (breakpoint, 2.5 μg/ml) and the Mycobacterium Growth Indicator Tube (MGIT) system (breakpoint, 5.0 μg/ml) both produced 98.6% agreement when compared with the conventional proportion method performed on 7H10 agar using 5.0 μg of kanamycin/ml. Both systems provided results within an average of 1 week.


2019 ◽  
Vol 47 (1) ◽  
pp. 1-12
Author(s):  
Hana Krismawati ◽  
Antonius Oktavian ◽  
Lydia Chaidir ◽  
Evy Iriani Natalia ◽  
Melda Suebu ◽  
...  

Identification of the Mycobacterium tuberculosis strain found in pulmonary tuberculosis patients in Jayapura using Spolygotyping was carried out Patients with pulmonary tuberculosis are taken as an index case. Sputum samples were taken to be diagnosed with Acid Fast Staining and to culture M. tuberculosis bacteria using Lowensten Jansen solid media, Ogawa solid media and Mycobacterium Growth Indicator Tube liquid media. The patient's home visit was conducted to determine the environmental conditions of the patient's residence, interview the close contacts and test the bacterial infection M. tuberculosis in close contact cases using the Mantoux test. A thorax radiology of close contacts was carried out in the hospital's radiology unit. The results of spolygotyping showed 8%sputum samples M. tuberculosis of Beijing strain, while the rest are M. tuberculosis non Beijing strains. Among the 46 of Non-Beijing strains, the type U (likely S) is most transmitted by tuberculosis patients to their close contacts, which is as much as 6%. This study confirms the factors that influence tuberculosis transmission are the sleeping location of close contacts with the patients, the frequency of meetings that occur at least once or more in a day, density of house occupants and the presence of clinical symptoms of TB. Drugs Resistance Susceptibility test results showed that 12 patients were resistance to TB drugs and one of them was MDR TB from strain LAMP. Key words : tuberculosis transmission, Spolygotyping, tuberculosis, Jayapura, drugs resistance   Abstrak Identifikasi galur Mycobacterium tuberculosis yang ditemukan pada penderita tuberculosis paru di Jayapura telah dilakukan dengan menggunakan Spoligotyping Penderita tuberkulosis paru diambil sebagai kasus indeks. Sampel sputum juga diambil untuk didiagnosis dengan pengecatan Basil Tahan Asam dan kultur bakteri M.tuberculosis yang dilakukan pada media padat Lowensten Jansen, media padat Ogawa serta media cair Mycobacterium Growth Indicator Tube. Ekstraksi DNA dilakukan pada koloni Mycobacterium tuberculosis untuk dilakukan analisis spoligotyping. Kunjungan rumah pasien dilakukan untuk mengetahui kondisi lingkungan tempat tinggal pasien, mewawancara kontak kasus dan melakukan skrining infeksi bakteri M.tuberkulosis pada kasus kontak menggunakan tes Mantoux. Foto dada pada kontak kasus selanjutnya dilakukan di unit radiologi rumah sakit. Hasil spoligotyping menunjukkan 8% (4/50) sampel sputum penderita tuberkulosis adalah M.tuberculosis galur Beijing, sedangkan sisanya adalah M.tuberculosis galur Non Beijing. Dari 46 galur Non-Beijing, tipe U (likely S) paling banyak ditransmisikan oleh penderita tuberculosis pada kontaknya yaitu sebanyak 6% (3/50). Penelitian ini mengkonfirmasi faktor-faktor yang mempengaruhi transmisi tuberkulosis meliputi lokasi tidur kontak kasus yang serumah dengan penderita, frekuensi pertemuan yang terjadi sedikitnya sekali atau lebih dalam sehari, kondisi rumah padat penghuni dan adanya gejala klinis TB. Hasil uji resistensi menunjukkan 12 pasien mengalami resistensi terhadap OAT dan 1 diantaranya adalah MDR TB dari strain LAMP. Kata kunci : Transmisi, Splygotyping, Mycobacterium tuberculosis, tuberkulosis, Jayapura, resistensi


2010 ◽  
Vol 9 (1) ◽  
pp. 44
Author(s):  
Mo. A.AL-Mazini, T. Bukeet, and A. Abdul Kareem

We examined whether the BACTEC/ Mycobacteria Growth Indicator Tube (MGIT) System alone could supplant the use of a supplemental Lowenstein–Jensen (LJ) slant for routine recovery of M. tuberculosis from clinical specimens. A total of 392 specimens of sputum were included in the study, collected from 196 patients. Specimens were processed with standard N-acetyl- L- Cysteine (NALC-NaOH) method, then inoculated onto BACTEC MGIT 960 and onto LJ media. The recovery rates of M.tuberculosis were 100 % (256/256) with BACTEC MGIT 960 and 72.6%(186/256) with LJ. The rates of contamination for each of the system were 4.8%with BACTEC MGIT 960 and 5.3%with LJ. The TTD for M. tuberculosis was 11.3 days with BACTEC System and 30.8 days with LJ. The difference in TTD between smear positive and smear negative specimens for M.tuberculosis with BACTEC MGIT 960 was not statistically significant. This study shows that the BACTEC System demonstrates better sensitivity for the recovery of M. tuberculosis from clinical specimens.


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