Phenolic acridine orange fluorescent stain for mycobacteria

Author:

Smithwick R W1,Bigbie M R1,Ferguson R B1,Karlix M A1,Wallis C K1

Affiliation:

1. Division of Bacterial and Mycotic Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA.

Abstract

A new fluorescence acid-fast staining method with acridine orange as the specific stain is presented. Only two reagents are required: the acridine orange-specific stain and a destaining-counterstaining reagent. Compared with auramine fluorescence acid-fast staining, there was less nonspecific staining of non-acid-fast debris which fluoresced a pale green contrasting color to provide a background in which to search for the red-to-orange fluorescing acid-fast bacilli. The results of the study indicate that the acridine orange method is superior to the auramine method in detecting acid-fast bacilli in specimen smears.

Publisher

American Society for Microbiology

Subject

Microbiology (medical)

Reference10 articles.

1. Survival of tubercle bacilli in heat-fixed sputum smears;Allen B. W.;J. Clin. Pathol.,1981

2. The dual nature of acid-fastness;Berg J. W.;Yale J. Biol. Med.,1953

3. Blair E. B. O. L. Wiser and A. H. Tull. 1969. Mycobacteriology laboratory methods. Lab Report no. 323. U.S. Army Medical Research and Nutrition Laboratory Fitzsimmons General Hospital Denver.

4. Comparison of various staining methods for demonstration of tubercle bacilli in sputum by direct microscopy;Engbaek H. C.;Bull. Int. Union Tuberc.,1969

5. Detection of small numbers of mycobacteria in sections by fluorescence microscopy;Gray D. F.;Am. Rev. Tuberc.,1953

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