scholarly journals Comparison of N-acetyl-L-cysteine-sodium hydroxide and Modified Petroff’s Decontamination Methods for Mycobacterium tuberculosis Culture

2021 ◽  
Vol 15 (3) ◽  
pp. 5
Author(s):  
ARIYANI KIRANASARI ◽  
MUHAMMAD RAYHAN
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Sodium Hydroxide ◽  
Positive Culture ◽  
Acid Fast Bacillus ◽  
P Value ◽  
Normal Flora ◽  
High Incidence ◽  
Mdr Tb ◽  
Positive Rate ◽  
Culture Positive

Indonesia is one of 22 countries with a high incidence of TB in the world, particularly related to TB-HIV and MDR-TB cases. Contamination of  normal flora from nasopharyngeal tract is the main problem  to isolate Mycobacterium tuberculosis (MTB) from sputum. It is needed a safe solution to decontaminate without killing  MTB bacilli. N-acetyl-L-cysteine-sodium hydroxide (NALC-NaOH) is compared with  modified Petroff’s  which is widely used in laboratories, to get better outcome. Of the 110 sputum samples were collected from suspected cases of Pulmonary TB. Decontamination using 2% NALC-NaOH and Modifed Petroff  (4% NaOH) was performed before AFB smear and culture on LJ medium. Each group was assessed for contamination and culture positive rate. The positive culture was validated using chromatography test for detected antigen MPT-64 and PNB. Result of this study showed that NALC-NaOH and  modified Petroff’s  methods did not significantly affect positivity rate of  Acid-Fast Bacillus (AFB) smear, 71% and 66% respectively. Contamination on culture was significantly (p=0,034) higher in samples treated with NALC-NaOH (21%) compared to Modified Petroff methods(13%). Proportion of positive culture on samples treated with NALC-NaOH was lower than Modified Petroff, 65% and 70% respectively with p value=1. Conclusion of this study showed that sputum  decontamination using Modified Petroff methods is  still more effective than  NALC-NaOH  to increase  positivity rate of MTB culture.  However, the two methods were not significantly different to get positivity result on the microscopic examination  of AFB.

scholarly journals Detection and Identification of Mycobacterium tuberculosis Directly from Sputum Sediments by Ligase Chain Reaction

1998 ◽  
Vol 36 (4) ◽  
pp. 1028-1031 ◽  
Author(s):  
Douglas F. Moore ◽  
Janis I. Curry
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Predictive Value ◽  
Positive Culture ◽  
Acid Fast Bacillus ◽  
Chain Reaction ◽  
Ligase Chain Reaction ◽  
Culture Techniques ◽  
Detection And Identification ◽  
Sensitivity Specificity ◽  
Culture Positive

Sputum specimens received for the diagnosis of tuberculosis or other mycobacterial infections were tested by a ligase chain reaction (LCR)-based assay and acid-fast stain and culture techniques. Results from the LCR assay (Abbott LCx Mycobacterium tuberculosis[MTB] Assay) were compared to results from standard culture techniques held for 6 weeks. Four hundred ninety-three specimens from 205 patients suspected of pulmonary tuberculosis were included in the prospective study. Thirty-four (6.9%) of the specimens were culture positive for M. tuberculosis, and 13 (38%) of these were also fluorochrome stain positive. LCR sensitivities and specificities compared to culture were 74 and 98%, respectively. LCR sensitivity was 100% for fluorochrome stain-positive specimens and 57% for fluorochrome stain-negative specimens. Nine LCR-negative, culture-positive specimens were the result of low concentrations ofM. tuberculosis. No inhibitors were detected in any of these specimens. Of the eight LCR-positive, culture-negative specimens, five were from patients with active tuberculosis. With these considered culture misses, final LCR sensitivity, specificity, positive predictive value, and negative predictive value were 77, 99, 91, and 98%, respectively. The same performance values for the fluorochrome acid-fast bacillus smear were 33, 98, 62, and 94%, respectively. After normal laboratory sputum processing, the Abbott LCx MTB Assay can be completed in 6 h. Thus, it is possible to have results available within 8 h of specimen submission.

scholarly journals Comparison of hypertonic saline-sodium hydroxide method with modified Petroff’s method for the decontamination and concentration of sputum samples

2013 ◽  
Vol 2 (3) ◽  
pp. 78-81 ◽  
Author(s):  
SK Chaudhary ◽  
B Mishra
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Sodium Hydroxide ◽  
Hypertonic Saline ◽  
P Value ◽  
Chi Square ◽  
Major Health ◽  
Medical College ◽  
Lowenstein Jensen ◽  
Novel Method ◽  
The Difference

INTRODUCTION: Tuberculosis is one of the major health problems particularly in developing countries. For definitive diagnosis of pulmonary tuberculosis identification of tubercle bacilli in sputum by microscopy and culture is essential. For decontamination and concentration of sputum, the commonly used method in the laboratory is Modified Petroff’s method but the Hypertonic saline–sodium hydroxide (HS-SH) method is known to be better for detection of Mycobacterium tuberculosis by culture. This study was aimed to compare a novel method for the improvement of decontamination and concentration of sputum samples. MATERIALS AND METHODS: A total of 50 confirmed smear positive sputum samples from pulmonary TB patients who visited at St. John’s Medical College and Hospital during 2009 to 2010, were processed for the decontamination process. Each sample was decontaminated by Modified Petroff’s and HS-SH method separately. Treated samples were cultured in Lowenstein-Jensen media in microbiology laboratory. RESULTS: The culture positive percents of Mycobacterium tuberculosis in the L-J medium treated with HS-SH and Modified Petroff’s method were 84.0% and 70.0%, respectively. A notable feature is that by HS-SH method more samples were positive by 4th week, statistically significant (Chi- square value-11.26 with p-value < 0.05) compare to Modified Petroff’s method. The difference for 3+ grades of L-J growths found slightly higher by Modified Petroff’s method but at lower grades of growths HS-SH method performed better. CONCLUSIONS: HS-SH method is better for the detection of Mycobacterium tuberculosis by culture when compared with the Modified Petroff’s method. DOI: http://dx.doi.org/10.3126/ijim.v2i3.8664   Int J Infect Microbiol 2013;2(3):78-81

scholarly journals Multidrug Resistant Mycobacterium tuberculosis Among Military and Civilian Personnel seen at a Tertiary Military Hospital, Manila, Philippines (2015–2018)

2020 ◽  
Vol 185 (7-8) ◽  
pp. e1106-e1111 ◽  
Author(s):  
John Mark Velasco ◽  
Noel Gaurano ◽  
Maria Theresa Valderama ◽  
Kathyleen Nogrado ◽  
Paula Corazon Diones ◽  
...  
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Military Personnel ◽  
Multidrug Resistant ◽  
Active Duty ◽  
The Philippines ◽  
Military Hospital ◽  
P Value ◽  
Active Duty Military ◽  
Mdr Tb ◽  
Rifampin Resistance

Abstract Introduction: About one third of the world population is estimated to be infected with Mycobacterium tuberculosis (MTB), and this proportion is expected to be higher in countries with a high tuberculosis (TB) burden. The Philippines is both a high tuberculosis burden and a high multidrug resistant tuberculosis (MDR-TB) burden country. Though TB has been extensively described in the civilian population, there is limited data on TB in the military population. The objectives are: (1) To determine MTB/MDR-TB prevalence among military and civilian patients in the Philippines presenting with clinically suspected TB in a tertiary military hospital and (2) To determine performance of direct sputum smear microscopy (DSSM) using Ziehl-Neelsen (ZN) staining compared to Xpert MTB/RIF real-time reverse transcriptase polymerase chain reaction. Materials and Methods: Sputum samples were obtained from patients, clinically suspected with TB, and/or with TB associated signs/symptoms. Sputum specimens were tested using DSSM with ZN staining and Xpert MTB/RIF assay (Cepheid, Sunnyvale, California) and patient demographic and clinical data were collected. Results: From March 2015 to December 2018, a total of 795 (173 military personnel [164 active duty and 9 retired]; 618 civilians; and 4 with no data on military/civilian status) patients with TB associated symptoms or clinically suspected with TB were tested. Overall, MTB prevalence was 81/795 (10%). MTB prevalence among active duty and retired military personnel were 27/164 (16%) and 4/9 (44%), respectively while MTB prevalence for civilian patients was 50/618 (8%) (p value = 0.0003; OR = 2.48 [95% C.I. 1.5–4]). Among active and retired military personnel who tested positive for MTB, rifampin resistance was 4/27 (15%) and 1/4 (25%), respectively, while rifampin resistance for civilian patients was 9/50 (18%) (p value = 1; OR = 0.88 [95% C.I. 0.26–2.90]). For active duty military personnel, average MTB prevalence (based on Xpert MTB/RIF) covering years 2015–2018 was 21% and ranged from 13% to 35%, while average rifampin resistance among MTB positive active duty military personnel was 15% and ranged from 0% to 25%. Overall sensitivity and specificity of DSSM compared to Xpert MTB/RIF were 70% and 96%, respectively. Positive and negative predictive values of DSSM to accurately categorize MTB in symptomatic cases (with Xpert MTB/RIF as “true positive” reference) were 74% and 95%, respectively. Performance of DSSM varied according to MTB load detected by Xpert MTB/RIF with increasing DSSM sensitivity observed as the MTB load detected by Xpert MTB/RIF increased (p = 0.02). Conclusion: This report describes high MTB and MDR-TB prevalence rates among symptomatic military patients with military personnel having higher odds of MTB infection compared to the civilian patients in the study. Since DSSM (ZN) sensitivity greatly varied depending on MTB load, the Xpert MTB/RIF should be used as a first-line diagnostic tool to identify MTB and detect rifampin resistance among presumptive TB cases instead of DSSM (ZN) microscopy.

scholarly journals Multicenter Evaluation of Anyplex Plus MTB/NTM MDR-TB Assay for Rapid Detection of Mycobacterium tuberculosis Complex and Multidrug-Resistant Isolates in Pulmonary and Extrapulmonary Specimens

2015 ◽  
Vol 54 (1) ◽  
pp. 59-63 ◽  
Author(s):  
Michela Sali ◽  
Flavio De Maio ◽  
Francesca Caccuri ◽  
Federica Campilongo ◽  
Maurizio Sanguinetti ◽  
...  
Keyword(s):  
Drug Resistance ◽  
Mycobacterium Tuberculosis ◽  
Rapid Detection ◽  
Acid Fast Bacillus ◽  
Isoniazid Resistance ◽  
Predictive Values ◽  
Content Type ◽  
Mdr Tb ◽  
Smear Testing ◽  
Acid Fast Bacillus Smear

The rapid diagnosis of tuberculosis (TB) and the detection of drug-resistantMycobacterium tuberculosisstrains are critical for successful public health interventions. Therefore, TB diagnosis requires the availability of diagnostic tools that allow the rapid detection ofM. tuberculosisand drug resistance in clinical samples. Here, we performed a multicenter study to evaluate the performance of the Seegene Anyplex MTB/NTM MDR-TB assay, a new molecular method based on a multiplex real-time PCR system, for detection ofMycobacterium tuberculosiscomplex (MTBC), nontuberculous mycobacteria (NTM), and genetic determinants of drug resistance. In total, the results for 755 samples (534 pulmonary and 221 extrapulmonary samples) were compared with the results of smears and cultures. For pulmonary specimens, the sensitivities of the Anyplex assay and acid-fast bacillus smear testing were 86.4% and 75.0%, respectively, and the specificities were 99% and 99.4%. For extrapulmonary specimens, the sensitivities of the Anyplex assay and acid-fast bacillus smear testing were 83.3% and 50.0%, respectively, and the specificities of both were 100%. The negative and positive predictive values of the Anyplex assay for pulmonary specimens were 97% and 100%, respectively, and those for extrapulmonary specimens were 84.6% and 100%. The sensitivities of the Anyplex assay for detecting isoniazid resistance in MTBC strains from pulmonary and extrapulmonary specimens were 83.3% and 50%, respectively, while the specificities were 100% for both specimen types. These results demonstrate that the Anyplex MTB/NTM MDR-TB assay is an efficient and rapid method for the diagnosis of pulmonary and extrapulmonary TB and the detection of isoniazid resistance.

scholarly journals RESISTENSI Mycobacterium Tuberculosis TERHADAP OBAT ANTI TUBERKULOSIS

2018 ◽  
Vol 12 (2) ◽  
pp. 58
Author(s):  
A. Nikmawati ◽  
Windarwati Windarwati ◽  
Hardjoeno Hardjoeno
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Standard Treatment ◽  
Positive Culture ◽  
Cross Sectional Study ◽  
Ratio Method ◽  
Cross Sectional ◽  
Resistant Tuberculosis ◽  
Multi Drug Resistant Tuberculosis ◽  
Mdr Tb ◽  
Lowenstein Jensen

Patients infected with resistant Mycobacterium tuberculosis strain will be very difficult to cure by standard treatment. To evaluatethe drug resistance of Mycobacterium tuberculosis. A Cross sectional study was performed from January until July 2005. Samples wereobtained from sputum of the suspect tuberculosis. All samples were cultured in Lowenstein-Jensen Media and followed by sensitivity testaccording to resistance ratio method. Of 236 samples, there were 30% positive cultures. The percentage of mono-resistance to Isoniazidwas 70%, to Rifampicin 64.3%, to Ethambutol 62.8% and Streptomycin 64.3%. The percentage of Multi Drug Resistant Tuberculosis(MDR-TB) was 20–40% and the percentage of poly-resistant (Ethambutol and Streptomycin) was 47.1%. The percentage of suspecttuberculosis with positive culture was 30%. There were also found high percentage of mono-resistant, poly-resistant and MDR-TB.

Determination some Immunological Aspects in Pulmonary Tuberculosis Patients in Qadisiyah Province

2018 ◽  
Vol 9 (2) ◽  
Author(s):  
Syoof Khowman Alramahy ◽  
Akram Hadi Hamza
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Pulmonary Tuberculosis ◽  
Statistical Difference ◽  
Positive Culture ◽  
Control Group ◽  
Tuberculosis Patients ◽  
Significant Difference ◽  
Lowenstein Jensen ◽  
The Mean ◽  
Igg Level

This study was carried out to study of some immunological aspects among the pulmonary Tuberculosis patients infected with causative agent, Mycobacterium tuberculosis. A Total of 200 sputum samples were collected from patients attending the consultant Clinic for Chest and Respiratory disease center, Diwaniya. Control group (No=15) also included. According to acid fast stain of sputum, the patients were classified as positive (No=91,45.5%) and negative (No=109,54.5, Lowenstein Jensen medium used for the cultivation of samples, on which 70% of sputum samples where positive culture for this microorganism. The grown microorganism were identified as M. tuberculosis, based on positive A.F.B, Niacin producers ,negative for catlase at 68c. The mean IgG level was l184.053±76.684 mg/100 ml in tuberculosis group compared with 1016.533 ± 44.882 mg/100ml in control group, rendering the statistical difference significant. For IgA and IgM levels, they were at mean of 315.880±38.552 mg/100 ml and 119.527±8.464 mg/100 ml in control group compared with 396.358±38.776 mg/100 ml and 134.207±11.696 mg/100 ml in patients group respectively with significant difference

HUBUNGAN DUKUNGAN KELUARGA DENGAN HARGA DIRI (SELF ESTEEM) PENDERITA TUBERKULOSIS PARU DI WILAYAH EKS KAWEDANAN INDRAMAYU

2017 ◽  
Vol 5 (1) ◽  
pp. 32-39
Author(s):  
Dedeh Husnaniyah
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Self Esteem ◽  
Cross Sectional Study ◽  
P Value ◽  
Sectional Study ◽  
Cross Sectional

Tuberkulosis Paru merupakan penyakit menular yang disebabkan oleh Mycobacterium tuberculosis. Dampak TB Paru adalah penurunan daya tahan tubuh, kelemahan fisik, merugikan secara ekonomis dan dapat mengakibatkan isolasi sosial. Keadaan tersebut dapat mempengaruhi harga diri penderita TB Paru. Perubahan harga diri pada penderita TB Paru dapat mempengaruhi keberhasilan pengobatan, sehingga dibutuhkan adanya dukungan keluarga. Tujuan Penelitian ini adalah untuk mengidentifikasi pengaruh dukungan keluarga terhadap harga diri penderita TB Paru di Wilayah Puskesmas Eks Kawedanan Indramayu tahun 2015. Jenis penelitian ini adalah deskriptif analitik dengan rancangan penelitian cross sectional study. Pengambilan sampel dilakukan dengan tekhnik total sampling sebayak 45 responden. Hasil penelitian menunjukkan bahwa penderita TB Paru yang memiliki harga diri tinggi sebanyak 23 responden (51,1%) dan yang memiliki harga diri rendah sebanyak 22 responden (48,9%), penderita TB Paru yang mendapatkan dukungan keluarga sebanyak 26 responden (57,8 %) dan yang tidak mendapatkandukungan keluarga sebanyak 19 (42,2 %). Responden yang mendapatkan dukungan keluarga lebih banyak yang memiliki harga diri tinggi dibandingkan dengan responden yang tidak mendapatkan dukungan keluarga yaitu 69,6% dengan nilai p value = 0,047 (< 0,05). Simpulan dari penelitian ini adalah terdapat hubungandukungan keluarga denganharga diri penderita TB Paru. Hasil penelitian ini diharapkan dapat menjadi masukan bagi pemegang program TB untuk memberikan konseling terkait pentingnya dukungan keluarga bagi penderita TB Paru.

Current insights into the chemistry and antitubercular potential of benzimidazole and imidazole derivatives

2020 ◽  
Vol 20 ◽  
Author(s):  
Deepa Parwani ◽  
Sushanta Bhattacharya ◽  
Akash Rathore ◽  
Chaitali Mallick ◽  
Vivek Asati ◽  
...  
Keyword(s):  
Drug Resistance ◽  
Mycobacterium Tuberculosis ◽  
Multi Drug Resistance ◽  
Benzimidazole Derivatives ◽  
Duration Of Treatment ◽  
Structure Activity ◽  
Mdr Tb ◽  
Low Toxicity ◽  
Extensively Drug Resistance ◽  
Improved Characteristics

: Tuberculosis is a disease caused by Mycobacterium tuberculosis (Mtb), affecting millions of people worldwide. The emergence of drug resistance is a major problem in the successful treatment of tuberculosis. Due to the commencement of MDR-TB (multi-drug resistance) and XDR-TB (extensively drug resistance), there is a crucial need for the development of novel anti-tubercular agents with improved characteristics such as low toxicity, enhanced inhibitory activity and short duration of treatment. In this direction, various heterocyclic compounds have been synthesized and screened against Mycobacterium tuberculosis. Among them, benzimidazole and imidazole containing derivatives found to have potential anti-tubercular activity. The present review focuses on various imidazole and benzimidazole derivatives (from 2015-2019) with their structure activity relationships in the treatment of tuberculosis.

scholarly journals Analysis of drug resistance and mutation profiles in Mycobacterium tuberculosis isolates in a surveillance site in Beijing, China

2021 ◽  
Vol 49 (1) ◽  
pp. 030006052098493
Author(s):  
Jie Zhang ◽  
Yixuan Ren ◽  
Liping Pan ◽  
Junli Yi ◽  
Tong Guan ◽  
...  
Keyword(s):  
Drug Resistance ◽  
Mycobacterium Tuberculosis ◽  
Drug Testing ◽  
Multidrug Resistant ◽  
High Rate ◽  
Drug Resistant ◽  
Surveillance Site ◽  
Mdr Tb ◽  
Previously Treated Patients ◽  
Beijing China

Objective This study analyzed drug resistance and mutations profiles in Mycobacterium tuberculosis isolates in a surveillance site in Huairou District, Beijing, China. Methods The proportion method was used to assess drug resistance profiles for four first-line and seven second-line anti-tuberculosis (TB) drugs. Molecular line probe assays were used for the rapid detection of resistance to rifampicin (RIF) and isoniazid (INH). Results Among 235 strains of M. tuberculosis, 79 (33.6%) isolates were resistant to one or more drugs. The isolates included 18 monoresistant (7.7%), 19 polyresistant (8.1%), 28 RIF-resistant (11.9%), 24 multidrug-resistant (MDR) (10.2%), 7 pre-extensively drug-resistant (XDR, 3.0%), and 2 XDR strains (0.9%). A higher rate of MDR-TB was detected among previously treated patients than among patients with newly diagnosed TB (34.5% vs. 6.8%). The majority (62.5%) of RIF-resistant isolates exhibited a mutation at S531L in the DNA-dependent RNA polymerase gene. Meanwhile, 62.9% of INH-resistant isolates carried a mutation at S315T1 in the katG gene. Conclusion Our results confirmed the high rate of drug-resistant TB, especially MDR-TB, in Huairou District, Beijing, China. Therefore, detailed drug testing is crucial in the evaluation of MDR-TB treatment.

scholarly journals Isolation of Mycobacterium talmoniae from a patient with diffuse panbronchiolitis: a case report

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Tomoko Suzuki ◽  
Miwako Saitou ◽  
Yuriko Igarashi ◽  
Satoshi Mitarai ◽  
Katsunao Niitsuma
Keyword(s):  
Combination Therapy ◽  
Bronchoalveolar Lavage Fluid ◽  
Left Lung ◽  
Lavage Fluid ◽  
Drug Susceptibility ◽  
Acid Fast Bacillus ◽  
Case Presentation ◽  
Diffuse Panbronchiolitis ◽  
Potential Pathogen ◽  
Culture Positive

Abstract Background Mycobacterium (M) talmoniae isolated from a patient with cystic fibrosis was first described in 2017, and cases of M. talmoniae remain exceedingly rare. Case presentation A 51-year-old woman had respiratory symptoms for 10 years. Diffuse panbronchiolitis (DPB) was detected at the first visit at our hospital. A cavity lesion in the apex of the left lung was found, and sputum and bronchoalveolar lavage fluid were acid-fast bacillus (AFB) smear- and culture-positive besides Pseudomonas aeruginosa. M. talmoniae was finally identified, and the standard combination therapy for non-tuberculous mycobacteria (NTM) was administered for 2 y referring to the drug-susceptibility test. Thereafter, the AFB culture was negative, the wall thickness of the lung cavity was ameliorated, and oxygen saturation improved. Conclusions We encountered a rare case of M. talmoniae with DPB, for which standard combination therapy was effective. M. talmoniae may be considered a potential pathogen of lung disease, especially in patients with bronchiectatic lesions.

Sign in / Sign up

Export Citation Format

Share Document