alexa Drug Resistance Analysis of Pasiniazid against Isoniazid-Resistant, Parasal-Resistant, Isoniazid and Parasal-Resitant, and Multidrug-Resistant
ISSN: 2161-0444

Medicinal Chemistry
Open Access

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Research Article

Drug Resistance Analysis of Pasiniazid against Isoniazid-Resistant, Parasal-Resistant, Isoniazid and Parasal-Resitant, and Multidrug-Resistant

Liping Yan#, Xiaona Shen#, Yanli Zhao, Yang Zhou and Heping Xiao*

Department of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, 507 Zhengmin Rd, Shanghai 200433, People’s Republic of China

#Liping YAN and Xiaona Shen contributed equally to this manuscript.

*Corresponding Author:
Heping Xiao
Department of Tuberculosis
Shanghai Pulmonary Hospital
Tongji University School of Medicine
507 Zhengmin Rd., Shanghai 200433
People’s Republic of China
Tel: 86-21-65115006
Fax: 86-21- 65111298
E-mail: [email protected]

Received date: April 24, 2015; Accepted date: June 22, 2015; Published date: June 24, 2015

Citation: Yan L, Shen X, Zhao Y, Zhou Y, Xiao H (2015) Drug Resistance Analysis of Pasiniazid against Isoniazid-Resistant, Parasal- Resistant, Isoniazid and Parasal- Resitant, and Multidrug-Resistant. Med chem 5:261-262. doi: 10.4172/2161-0444.1000273

Copyright: © 2015 Yan L, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Objective: In view of the high INH resistance, we conducted in vitro drug susceptible test of Isoniazid (INH) and Parasal (PAS) and Pasiniazid (PA) to determine the cross-resistance of the three drugs.

Method: The proportion method on Lo¨wenstein–Jensen (L–J) medium was used to conduct antimycobacterial susceptibility testing of INH and PAS and PA to one hundred and ninety-seven clinical isolates of, including multidrugresistant isolates.

Results: For INH-resistant isolates, PA sensitive rate was as high as 73.6%. The three PAS-resistant isolates were all susceptible to PA. 92% of the isolates resistant to INH and PAS simultaneously were resistant to PA. Most of the isolates susceptible to INH and PAS were also susceptible to PA. More than half of the MDR strains are still sensitive to PA. Almost all of the seventy PA-resistant isolates were also resistant to INH except one isolate. However, 34.3% of the seventy PA-resistant isolates were susceptible to PAS. For MDR isolates in this experiment, PA resistant rate was 46.2%.

Conclusion: PA showed lower susceptibility to the isolate resistant to INH and PAS simultaneously. PAS has strong anti-TB effect. INH is not recommended for the PA-resistant isolates. For single INH resistant cases or MDR cases, we can consider using PA instead of INH.

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