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Chinese Journal of Antituberculosis ›› 2020, Vol. 42 ›› Issue (3): 259-265.doi: 10.3969/j.issn.1000-6621.2020.03.015

• Original Articles • Previous Articles     Next Articles

Analysis of clarithromycin resistance and its influencing factors in 254 patients with drug-resistant tuberculosis

GAO Tian-hui1,SHU Wei2,GAO Jing-tao2,LU Yu1(),LI Qi2()   

  1. 1 Laboratory of Pharmacology;Clinical Center on Tuberculosis,Beijing Chest Hospital,Capital Medical University;Beijing Tuberculosis and Thoracic Tumor Research Institute,Beijing 101149,China
  • Received:2019-11-06 Online:2020-03-10 Published:2020-03-18
  • Contact: Yu LU,Qi LI E-mail:luyu4876@hotmail.com;lq0703@hotmail.com

Abstract:

Objective To analyze the clarithromycin resistance and related risk factors in drug-resistant tuberculosis patients, and provide reference for the clinical application of clarithromycin. Methods The clinical data and drug sensitivity test results (referred to as “drug sensitivity tests”) of 254 patients diagnosed with drug-resistant tuberculosis in Beijing Chest Hospital affiliated to Capital Medical University from January 2017 to January 2018 were collected for retrospective analysis. Among them, the sensitivity of 16 kinds of antituberculosis drugs including clarithromycin was tested using the proportional method. Logistic regression was used to analyze clinical relevant influencing factors for clarithromycin resistance. Results (1) Among 254 patients with drug-resistant tuberculosis, 17 multi-drug resistant/extensive drug-resistant patients were resistant to clarithromycin, and the drug resistance rate was 6.69% (17/254), which was lower than the remaining 15 anti-tuberculosis drugs (12.60% (32/254) to 95.67% (243/254)). (2) The drug resistance rates of moxifloxacin (47.06%, 8/17), clofazimine (70.59%, 12/17), ethambutol (82.35%, 14/17), amikacin (52.94%,9/17), p-aminosalicylic acid (76.47%,13/17), para-aminosalicylic acid isoniazid (88.24%,15/17), and capreomycin (76.47%,13/17) of MDR/XDR-TB patients were higher in the clarithromycin-resistant group than that in the sensitive group (moxifloxacin (11.32%, 24/212), clofazimine (9.91%, 21/212), ethambutol (41.51%, 88/212), amikacin (21.70%, 46/212), P-aminosalicylic acid (35.85%, 76/212), para-aminosalicylic acid isoniazid (52.83%, 112/212), capreomycin (28.77%, 61/212), the differences were statistically significant (χ 2 values were separately 16.721,46.987,10.628,6.793,10.930,7.986,16.370,P values were all <0.05). (3) Logistic regression results showed that the number of resistant drugs exceeding seven (OR(95%CI)=9.328 (2.058-42.290) was the risk factor for clarithromycin resistance. Conclusion The drug resistance rate of clarithromycin in drug-resistant tuberculosis patients is lower than that of other commonly used anti-tuberculosis drugs. It occurs more common in multidrug-resistant/extensive multidrug-resistant patients. The number of resistant drugs exceeding 7 is the main risk factor for patients resistant to clarithromycin.

Key words: Tuberculosis, pulmonary, Clarithromycin, Antitubercular agents, Drug resistance, Factor analysis, statistical