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- In pathology, the Grocott-Gomori's (or Gömöri) methenamine silver stain, abbreviated GMS, is a popular staining method in histology. The stain was originally named after György Gömöri, the Hungarian physician who developed the stain. It is used widely as a screen for fungal organisms. It is particularly useful in staining carbohydrates. It can be used to identify the yeast-like fungus Pneumocystis jiroveci, which causes a form of pneumonia called Pneumocystis pneumonia (PCP) or pneumocystosis. The cell walls of these organisms are outlined by the brown to black stain. The principle of GMS is the reduction of silver ions, which renders the fungal cell wall black. The fungal cell wall commonly contains polysaccharides. In a GMS procedure, chromic acid is first used to oxidize polysaccharides, generating aldehydes. Then Grocott's alkaline hexamine-silver solution is applied, where the silver ions are reduced to black amorphous silver. The reduction reaction by the fungal cell wall is often known as argentaffin reaction. (en)
- En pathologie, la coloration à l' argent de méthénamine de Grocott-Gomori (abrégée GMS en anglais, pour Grocott's methenamine stain) ou plus communément coloration de Grocott, est une méthode de coloration populaire en histologie. La coloration doit son nom à György Gömöri, médecin hongrois qui l'a inventé. Elle est largement utilisée pour détecter les organismes fongiques, comme Pneumocystis jiroveci, agent responsable de la pneumocystose. La coloration donne un aspect brun à noir aux parois cellulaires. La coloration repose sur la réduction des ions d'argent, ce qui rend la paroi cellulaire fongique noire. Cela est rendu possible car la paroi cellulaire fongique contient généralement des polysaccharides. Au cours de la coloration, de l'acide chromique est d'abord utilisé pour oxyder les polysaccharides, ceci générant des aldéhydes. Ensuite, la solution alcaline de methenamine d'argent de Grocott est appliquée, ce qui réduit les ions d'argent en argent amorphe noir. La réaction de réduction par la paroi cellulaire fongique est souvent connue sous le nom de réaction argentaffine. (fr)
- De Grocott is een (kleurreagens) om schimmels aan te tonen. (nl)
- A coloração de metenamina de prata de Grocott-Gomori(ou GMS), é um método de coloração popular na histologia. É usado amplamente para detectar fungos, sendo particularmente útil na coloração de carboidratos. Pode ser utilizado para identificar a leveduraPneumocystis jiroveci que causa uma forma de pneumonia denominada pneumocistose (PCP). As paredes celulares desses organismos são delineadas pela coloração que varia de marrom a preto. (pt)
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- De Grocott is een (kleurreagens) om schimmels aan te tonen. (nl)
- A coloração de metenamina de prata de Grocott-Gomori(ou GMS), é um método de coloração popular na histologia. É usado amplamente para detectar fungos, sendo particularmente útil na coloração de carboidratos. Pode ser utilizado para identificar a leveduraPneumocystis jiroveci que causa uma forma de pneumonia denominada pneumocistose (PCP). As paredes celulares desses organismos são delineadas pela coloração que varia de marrom a preto. (pt)
- In pathology, the Grocott-Gomori's (or Gömöri) methenamine silver stain, abbreviated GMS, is a popular staining method in histology. The stain was originally named after György Gömöri, the Hungarian physician who developed the stain. It is used widely as a screen for fungal organisms. It is particularly useful in staining carbohydrates. It can be used to identify the yeast-like fungus Pneumocystis jiroveci, which causes a form of pneumonia called Pneumocystis pneumonia (PCP) or pneumocystosis. The cell walls of these organisms are outlined by the brown to black stain. (en)
- En pathologie, la coloration à l' argent de méthénamine de Grocott-Gomori (abrégée GMS en anglais, pour Grocott's methenamine stain) ou plus communément coloration de Grocott, est une méthode de coloration populaire en histologie. La coloration doit son nom à György Gömöri, médecin hongrois qui l'a inventé. Elle est largement utilisée pour détecter les organismes fongiques, comme Pneumocystis jiroveci, agent responsable de la pneumocystose. La coloration donne un aspect brun à noir aux parois cellulaires. (fr)
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- Coloration de Grocott (fr)
- Grocott's methenamine silver stain (en)
- Grocott (nl)
- Coloração de metenamina de prata de Grocott (pt)
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