[Comparison of P-nitrobenzoic acid and hydroxylamine hydrochloride for the primary screening of mycobacterial species].
Zhonghua Jie He He Hu Xi Za Zhi
; 36(11): 833-5, 2013 Nov.
Article
em Zh
| MEDLINE
| ID: mdl-24507395
ABSTRACT
OBJECTIVES:
To examine the screening methods for mycobacteria recommended by the China Anti-tuberculosis Association, in order to increase laboratory diagnostic accuracy for mycobacterial screening.METHODS:
Using P-nitrobenzoic acid (PNB 0.5 g/L) as the control group, and hydroxylamine hydrochloride (HA, in 125, 150 and 175 mg/L concentrations) as the study group, laboratory preserved strains of H37Rv M.tuberculosis, and standard and clinically isolated strains of M.nontuberculosis (NTM) from Guangzhou Chest Hospital were tested for both PNB and HA sensitivity. Differences between groups were analyzed by χ(2) test.RESULTS:
Among the 2529 MTB strains, the resistance rate to PNB was 3.0% (76/2529), to HA was 12.2% (308/2529), 4.8% (121/2529), and 0.9% (23/2529), respectively, corresponding to the aforementioned 3 different concentrations of HA. Among the 1766 NTM strains, the sensitive rate to PNB was 8.3% (147/1766), to HA was 0.1% (2/1766), 0.5% (9/1766), and 0.9% (16/1766), respectively, corresponding to the aforementioned 3 different concentrations of HA. There was significant difference (χ(2) = 5.44-83.50, P < 0.05).CONCLUSION:
HA at 175 mg/L concentration was the optimal condition for laboratory tuberculosis preliminary screening.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Hidroxilamina
/
Mycobacterium
/
Nitrobenzoatos
Tipo de estudo:
Diagnostic_studies
/
Screening_studies
Limite:
Humans
Idioma:
Zh
Revista:
Zhonghua Jie He He Hu Xi Za Zhi
Ano de publicação:
2013
Tipo de documento:
Article