scholarly journals Profile of multi drug resistant (MDR) and rifampicin resistant TB patients treated under category IV of RNTCP

2017 ◽  
Vol 6 (4) ◽  
pp. 784
Author(s):  
Pravin Uike ◽  
Prabhakar Hiwarkar ◽  
Vilas Malkar ◽  
Ketan Aswalle
Keyword(s):  
Drug Resistant ◽  
Age Group ◽  
The Social ◽  
Standardized Treatment ◽  
Mdr Tb ◽  
Previously Treated ◽  
Male Patients ◽  
Treatment Register ◽  
Emergence Of Resistance ◽  
Significant Health

Background: The emergence of resistance to drugs used to treat tuberculosis (TB) and particularly multidrug resistance TB (MDR-TB) has become a significant health problem and obstacle to effective TB control in India. Present study was conducted to study clinical and sociodemograohic profile of MDR and rifampicin resistant TB patients registered for treatment under RNTCP in Yavatmal district of Maharashtra state.Methods: All drug resistant (MDR and rifampicin resistant) TB patients residents of Yavatmal district, treated at DOTS plus site with Standardized Treatment Regimen (STR) from 1st quarter 2009 to 3rd quarter 2013 were included. Data was obtained from electronic treatment register maintained at DOTS Plus site.Results: There were total 60 confirmed MDR and rifampicin resistant TB patients from Yavatmal district. Male patients (65.00%) were comparatively more than females (35.00%). Almost half (46.67%) of the patients belonged to the productive age group i.e. 30-45 years followed by another one third (35.00%) in the age group of 15-30 years. 93.33% patients were previously treated under RNTCP (under CAT II), out of them 48.51% were failure, 37.50% relapse and 14.29% defaulter.Conclusions: Among MDR and rifampicin resistant TB patients, maximum patients were males, belonged to the social and productive age group, HIV negative and previously treated due to treatment failure.

scholarly journals Prevalence and factors associated with non-adherence to multi-drug resistant tuberculosis (MDR-TB) treatment at Mulago National Referral Hospital, Kampala, Uganda

2021 ◽  
Vol 21 (1) ◽  
pp. 238-47
Author(s):  
Charles Batte ◽  
Martha S Namusobya ◽  
Racheal Kirabo ◽  
John Mukisa ◽  
Susan Adakun ◽  
...  
Keyword(s):  
Mulago Hospital ◽  
Drug Resistant ◽  
Drug Resistant Tuberculosis ◽  
Factors Associated ◽  
Tb Treatment ◽  
Resistant Tuberculosis ◽  
Multi Drug Resistant Tuberculosis ◽  
Mdr Tb ◽  
History Of ◽  
Previously Treated

Background: In Uganda, 12% of previously treated TB cases and 1.6% of new cases have MDR-TB and require specialized treatment and care. Adherence is crucial for improving MDR-TB treatment outcomes. There is paucity of information on the extent to which these patients adhere to treatment and what the drivers of non-adherence are. Methods: We conducted a cohort study using retrospectively collected routine program data for patients treated for MDR- TB between January 2012 – May 2016 at Mulago Hospital. We extracted anonymized data on non-adherence (missing 10% or more of DOT), socio-economic, demographic, and treatment characteristics of the patients. All participants were sen- sitive to MDR-TB drugs after second line Drug Susceptible Testing (DST) at entry into the study. Factors associated with non-adherence to MDR-TB treatment were determined using generalized linear models for the binomial family with log link and robust standard errors. We considered a p- value less than 0.05 as statistically significant. Results: The records of 227 MDR- TB patients met the inclusion criteria, 39.4% of whom were female, 32.6% aged be- tween 25 – 34 years, and 54.6% living with HIV/AIDS. About 11.9% of the patients were non-adherent. The main driver for non-adherence was history of previous DR-TB treatment; previously treated DR-TB patients were 3.46 (Adjusted prev- alence ratio: 3.46, 95 % CI: 1.68 - 7.14) times more likely to be non-adherent. Conclusion: One in 10 MDR-TB patients treated at Mulago hospital is non-adherent to treatment. History of previous DR- TB treatment was significantly associated with non-adherence in this study. MDR-TB program should strengthen adherence counselling, strengthen DST surveillance, and close monitoring for previously treated DR-TB patients. Keywords: Non-adherence; multi-drug resistant tuberculosis; treatment.

scholarly journals Primary Clofazimine and Bedaquiline Resistance among Isolates from Patients with Multidrug-Resistant Tuberculosis

2017 ◽  
Vol 61 (6) ◽  
Author(s):  
Jian Xu ◽  
Bin Wang ◽  
Minghao Hu ◽  
Fengmin Huo ◽  
Shaochen Guo ◽  
...  
Keyword(s):  
Multidrug Resistant ◽  
Cross Resistance ◽  
Drug Resistant ◽  
Content Type ◽  
Tb Treatment ◽  
Resistant Tuberculosis ◽  
Multidrug Resistant Tuberculosis ◽  
Mdr Tb ◽  
Previously Treated ◽  
Alamarblue Assay

ABSTRACT Clofazimine has been repurposed for the treatment of tuberculosis, especially for multidrug-resistant tuberculosis (MDR-TB). To test the susceptibility to clofazimine of Mycobacterium tuberculosis clinical isolates, MICs of clofazimine were determined using the microplate alamarBlue assay (MABA) method for 80 drug-resistant isolates and 10 drug-susceptible isolates for comparison. For five clofazimine-resistant strains isolated from previously treated pre-extensively drug-resistant TB (pre-XDR-TB) and XDR-TB patients without prior exposure to clofazimine or bedaquiline, clofazimine MICs were ≥1.2 μg/ml. Four isolates with cross-resistance to bedaquiline had Rv0678 mutations. The other isolate with no resistance to bedaquiline had an Rv1979c mutation. This study adds to a recent study showing that 6.3% of MDR-TB patients without prior clofazimine or bedaquiline exposure harbored isolates with Rv0678 mutations, which raises concern that preexisting resistance to these drugs may be associated with prior TB treatment. Furthermore, we propose a tentative breakpoint of 1.2 μg/ml for clofazimine resistance using the MABA method. More-widespread surveillance and individualized testing for clofazimine and bedaquiline resistance, together with assessment of their clinical usage, especially among previously treated and MDR-TB patients, are warranted.

scholarly journals Prevalence and risk factors of multi-drug resistant tuberculosis in Dalian, China

2017 ◽  
Vol 45 (6) ◽  
pp. 1779-1786 ◽  
Author(s):  
Xin-Tong Lv ◽  
Xi-Wei Lu ◽  
Xiao-Yan Shi ◽  
Ling Zhou
Keyword(s):  
Risk Factors ◽  
Population History ◽  
Drug Resistant ◽  
Drug Resistant Tuberculosis ◽  
Tb Treatment ◽  
Resistant Tuberculosis ◽  
Multi Drug Resistant Tuberculosis ◽  
Mdr Tb ◽  
Previously Treated Patients ◽  
Previously Treated

Objectives To investigate the prevalence and risk factors associated with multi-drug resistant tuberculosis (MDR–TB) in Dalian, China. Methods This was a retrospective review of data from patients attending a TB clinic in Dalian, China between 2012 and 2015. Demographic and drug susceptibility data were retrieved from TB treatment cards. Univariate logistic analysis was used to assess the association between risk factors and MDR–TB. Results Among the 3552 patients who were smear positive for Mycobacterium tuberculosis (MTB), 2918 (82.2%) had positive MTB cultures and 1106 (31.1%) had isolates that showed resistance to at least one drug. The overall prevalence of MDR–TB was 10.1% (359/3552; 131/2261 [5.8%] newly diagnosed and 228/1291 [17.7%] previously treated patients). Importantly, 75 extensively drug-resistant TB isolates were detected from 25 newly treated and 50 previously treated patients. In total, 215 (6.1%) patients were infected with a poly-resistant strain of MTB. Previously treated patients and older patients were more likely to develop MDR–TB. Conclusions The study showed a high prevalence of MDR–TB among the study population. History of previous TB treatment and older age were associated with MDR–TB.

scholarly journals Molecular Detection of Drug-Resistant Mycobacterium tuberculosis in Sputum Specimens from the New and Previously Treated Tuberculosis Cases at the National Reference Chest Diseases Laboratory in Lusaka, Zambia

2021 ◽  
Vol 2 (4) ◽  
pp. 232-243
Author(s):  
DK Mumena ◽  
G Kwenda ◽  
CW Ngugi ◽  
AK Nyerere
Keyword(s):  
Drug Resistance ◽  
Mycobacterium Tuberculosis ◽  
Polymerase Chain Reaction Amplification ◽  
Multi Drug Resistance ◽  
Drug Resistant ◽  
Health Issues ◽  
Resistant Tuberculosis ◽  
Mdr Tb ◽  
Reaction Amplification ◽  
Previously Treated

Background: Drug-Resistant Tuberculosis (DR-TB) is one of the major public health issues globally. Zambia is highly burdened by TB and multi-drug resistant TB. In this study, sputum samples obtained from the new and previously treated cases of TB were examined for drug-resistant Mycobacterium tuberculosis (MTB). Methods: Sputum specimens were processed using the N-acetyl-L-cysteine-sodium hydroxide method, stained and examined using fluorescent technique and microscopy respectively. Mycobacterial DNA was extracted using the Genolyse kit, then subjected to multiplex polymerase chain reaction amplification and reverse hybridization. Drug-resistance and mutations in MTB genes were detected using the Genotype MTBDRplus VER 2.0 and MTBDRsl VER 2.0 assays. Results: A total of 329 MTB-positive sputum specimens, 102 from the new TB cases and 227 from previously treated TB cases, were analysed for drug-resistance. Among the new TB cases, 3.9% had Rifampicin (RIF) mono-resistance, 12.8% Isoniazid (INH) mono-resistance, and 17.7% had Multi-Drug Resistance (MDR). For the previously treated TB cases, 10.1% had RIF mono-resistance, 6.6% INH mono-resistance, 33.0% MDR, 1.8% poly-drug resistance, and 0.8% had pre-Extensively Drug-Resistance (pre-XDR). Mutations identified were rpoB (Ser531Leu, His526Asp, Asp516Val, His526Tyr, and Glu510His), katG (Ser315Thr 1 and Ser315Thr 2), InhA (Cys15Thr), gyrA (Ala90Val and Asp94Gly), and eis (Cys14Thr), each with a varying frequency. Conclusion: DR-TB is prevalent, especially MDR-TB, which is currently the most worrisome form of DR-TB and an emerging threat hampering efforts in the control of TB in Zambia. The early detection and effective treatment of TB cases are key in the control of DR-TB.

scholarly journals Multi-drug-resistant tuberculosis (MDR-TB): Current situation in South Africa

2017 ◽  
Vol 59 (2) ◽  
pp. 5
Author(s):  
Gboyega A Ogunbanjo
Keyword(s):  
South Africa ◽  
Soviet Union ◽  
Former Soviet Union ◽  
Drug Resistant ◽  
First Line ◽  
Drug Resistant Tuberculosis ◽  
Resistant Tuberculosis ◽  
Multi Drug Resistant Tuberculosis ◽  
Mdr Tb ◽  
Previously Treated

Multi-drug-resistant tuberculosis (MDR-TB) is a form of tuberculosis (TB) infection which is resistant to treatment with at least two of the most powerful first-line anti-TB drugs, namely isoniazid and rifampicin. Globally, MDR-TB caused an estimated 480 000 new TB cases and 250 000 deaths in 2015 and accounted for 3.3% of all new TB cases worldwide.1 MDR-TB, or rifampicin-resistant TB, causes 3.9% of new TB cases and 21% of previously treated TB cases, and most MDR-TB cases occur in South America, southern Africa, India, China, and the former Soviet Union.1

scholarly journals Socio-demographic profile of multi-drug resistant tuberculosis patients and its association with severity of adverse drug reactions in DOTS plus centre at tertiary hospital in Himachal Pradesh, India

2018 ◽  
Vol 7 (12) ◽  
pp. 2342
Author(s):  
Anita Kumari ◽  
Parveen K. Sharma ◽  
Dinesh Kansal ◽  
Rekha Bansal ◽  
Sumita Kumari
Keyword(s):  
Health Problem ◽  
Tertiary Hospital ◽  
Drug Resistant ◽  
Age Group ◽  
Drug Reactions ◽  
Drug Resistant Tuberculosis ◽  
Tuberculosis Patients ◽  
Resistant Tuberculosis ◽  
Multi Drug Resistant Tuberculosis ◽  
Mdr Tb

Background: Multi-drug resistant tuberculosis has become major public health problem and obstacle to effective control of tuberculosis. Objectives was to study the socio-demographic profile of multi- drug resistant tuberculosis patients and its association with severity of ADR (adverse drug reactions) in DOTS plus centre at tertiary hospital in Himachal Pradesh.Methods: It was a prospective observational study carried out from November 2012 to October 2013 on multi-drug resistant tuberculosis (MDR-TB) patients after approved from Institutional Ethics Committee.Results: Out of 104 patients the mean age of patients was 39.9 ±14.26 years. Majority of the patients were in the economically productive age groups. Multi-drug resistant tuberculosis was more in male (76%) than female (24%) and 96% of patients were belonged to rural area. The educational status of the MDR-TB shows 24% patients were illiterate. 63.46% MDR-TB patients were underweight (BMI<18.5%) according to WHO guidelines for obesity. Severity of ADR assessed by Hart wig and Siegel’s scale showed 21% patients experienced mild ADRs, 49% patients had moderate and 17% patients had severe ADRs. Severity of ADR is seen more in male, economically productive age group, subjects on vegetarian diet, patients who were underweight (BMI<18.5%) and with lower educational status.Conclusions: MDR-TB is a rapidly increasing health problem with major socio-economic and individual consequences. Multi-drug resistant tuberculosis mainly affects middle age that is in the economically productive age group which hampers the social and economic development of individual, society and nation.

scholarly journals Prevalence and factors associated with non-adherence to multi-drug resistant tuberculosis (MDR-TB) treatment at Mulago National Referral Hospital, Kampala, Uganda

2021 ◽  
Vol 21 (1) ◽  
pp. 238-47
Author(s):  
Charles Batte ◽  
Martha S Namusobya ◽  
Racheal Kirabo ◽  
John Mukisa ◽  
Susan Adakun ◽  
...  
Keyword(s):  
Mulago Hospital ◽  
Drug Resistant ◽  
Drug Resistant Tuberculosis ◽  
Factors Associated ◽  
Tb Treatment ◽  
Resistant Tuberculosis ◽  
Multi Drug Resistant Tuberculosis ◽  
Mdr Tb ◽  
History Of ◽  
Previously Treated

Background: In Uganda, 12% of previously treated TB cases and 1.6% of new cases have MDR-TB and require specialized treatment and care. Adherence is crucial for improving MDR-TB treatment outcomes. There is paucity of information on the extent to which these patients adhere to treatment and what the drivers of non-adherence are. Methods: We conducted a cohort study using retrospectively collected routine program data for patients treated for MDR- TB between January 2012 – May 2016 at Mulago Hospital. We extracted anonymized data on non-adherence (missing 10% or more of DOT), socio-economic, demographic, and treatment characteristics of the patients. All participants were sen- sitive to MDR-TB drugs after second line Drug Susceptible Testing (DST) at entry into the study. Factors associated with non-adherence to MDR-TB treatment were determined using generalized linear models for the binomial family with log link and robust standard errors. We considered a p- value less than 0.05 as statistically significant. Results: The records of 227 MDR- TB patients met the inclusion criteria, 39.4% of whom were female, 32.6% aged be- tween 25 – 34 years, and 54.6% living with HIV/AIDS. About 11.9% of the patients were non-adherent. The main driver for non-adherence was history of previous DR-TB treatment; previously treated DR-TB patients were 3.46 (Adjusted prev- alence ratio: 3.46, 95 % CI: 1.68 - 7.14) times more likely to be non-adherent. Conclusion: One in 10 MDR-TB patients treated at Mulago hospital is non-adherent to treatment. History of previous DR- TB treatment was significantly associated with non-adherence in this study. MDR-TB program should strengthen adherence counselling, strengthen DST surveillance, and close monitoring for previously treated DR-TB patients. Keywords: Non-adherence; multi-drug resistant tuberculosis; treatment.

scholarly journals Longitudinal Analysis of Prevalence and Risk Factors of Rifampicin-Resistant Tuberculosis in Zhejiang, China

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Zhengwei Liu ◽  
Mingwu Zhang ◽  
Jianmei Wang ◽  
Songhua Chen ◽  
Beibei Wu ◽  
...  
Keyword(s):  
Longitudinal Analysis ◽  
Susceptibility Testing ◽  
Sputum Smear ◽  
Drug Resistant ◽  
First Line ◽  
Tuberculosis Patients ◽  
Factors Associated ◽  
Resistant Tuberculosis ◽  
Mdr Tb ◽  
Previously Treated

Objectives. To investigate the factors associated with rifampicin-resistant tuberculosis among drug resistant tuberculosis patients and to determine the correlation of rifampicin-resistant TB with MDR-TB in a high MDR-TB burden province of china. Methods. A retrospective longitudinal analysis on four surveys of anti-TB drug resistance done in 1998, 2003, 2008, and 2013 in Zhejiang province, China. 4289 sputum-smear microscopy positive suspected tuberculosis patients were eligible at 30 investigation points, chosen by stratified random sampling at survey sites from all over the province. Culturing samples in L-J medium and the drug-susceptibility testing for the 4 first-line anti-TB drugs were performed to all patients. Multivariate logistic regression was carried out to determine the factors associated with the rifampicin-resistance in the study population. Results. Overall, there were 3832 patients with positive mycobacterial cultures, and 2813 of the isolates (73.4%) were susceptible to all 4 first-line drugs. Analysis of rifampin monoresistant (RMR) TB indicated the prevalence was 1.1% in new cases and 3.4% in previously treated cases. Among the 359 rifampicin resistant TB (RR-TB) cases, 279 (77.7%) were also resistant to isoniazid, indicating MDR-TB. From 1998 to 2013, the proportion of MDR-TB among rifampicin-resistant TB cases varied between 80.0% and 87.5% (P for trend: 0.768) among previously treated cases and varied from 68.6% to 79.5% (P for trend: 0.403) among new cases. Among previously treated patients, those who received treatment for less than 6 months were less likely to have drug resistant TB (OR: 0.40, 95% CI: 0.16–0.97) or MDR-TB (OR: 0.24, 95% CI: 0.07–0.81). Patients who received anti-TB treatment in a general hospital were less likely to develop MDR-TB than those treated in a TB clinic (OR: 0.08, 95% CI: 0.01–0.72). Conclusion. This study highlights a high proportion of RMR-TB among new RR-TB cases in Zhejiang, China. The management of treatment with rapid and accurate diagnosis of MDR-TB other than only relying on RIF susceptibility testing is crucial for improving adherence and outcomes in patients with drug-resistant TB.

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.

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