Grocott methenamine silver positivity in Neutrophils

Antibacterial and Immunomodulatory Effects of Hexamethylenetetramine (Methenamine) Silver Nitrate

Introduction: Currently, developing new antibacterial drugs as alternative antibiotics is a very active area of research, due to widspreading widespread prevalence of resistant strains of microorganisms. This work intends to investigate of antibacterial properties and influence on immune blood cells of the silver-based compound hexamethylenetetramine (methenamine) silver nitrate with general fo...

An allochrome periodic acid-methenamine silver stain for demonstrating mycobacteria in tissue sections.

Nyka9) employed the Gomori-Grocott's chromic acid-methenamine silver method for demonstrating tubercle bacilli in tissue sections after sublimate fixative with added hydrogen peroxide or periodic acid. He described that this procedure could demonstrate mycobacteria that had lost their acidfastness by the usual carbol fuchsin stain. Harada5) also employed the periodic acid-methenamine silver sta...

Demonstration of basement membrane in renal biopsies by silver-methenamine on thin epoxyresin sections.

In the recent paper on an improved technique for renal biopsies, Meadows and Schoemaker (1970) describe the use of a special wax to give fine sections at 1-2,.u. They illustrate their excellent results with Jones's silver technique. In this laboratory, however, difficulty was experienced with their use of ammoniacal ethanol and as we, in agreement with Eastham and Essex (1969), believe that the...

Utility of reflexive gomori methenamine silver and Acid-fast bacillus staining on bronchoalveolar lavage specimens.

OBJECTIVE Reflexive testing of bronchoalveolar lavage (BAL) specimens with Gomori methenamine silver (GMS) and acid-fast bacillus (AFB) stains is not routinely performed by most institutions. Instead, these stains are usually ordered to evaluate for the presence of fungal elements and/or acid-fast organisms if initial histopathologic assessment suggests the presence of these pathogens. Our inst...

Modified Grocott's methenamine silver nitrate method for quick staining of Pneumocystis carinii.