September 29, 2020

Fig.3 AgNOR staining with peripheral blood lymphocytes. . The technical aspect of AgNOR staining procedure should be carefully dealt with. Attention should. Conclusions: AgNOR staining can be considered as a useful adjunct to adjunct procedures which can diagnose malignancy at the earliest. Silver staining results are comparable to those obtained. [A standardized AgNOR stain method for formalin fixed and paraffin embedded .. to be a good adjunct to presently available frozen section techniques and cytology.

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Role of the argyrophilic nucleolar organizer regions in tumor detection and prognosis.

AgNOR staining and quantification.

Two grams of silver nitrate and hence 6 ml of final working solution were found sufficient to stain five sections. Journal compilation Blackwell Publishing Ltd. This count was believed to represent proliferative activity.

Our results show that the mAgNOR was 2. Examine under the through light microscope. Neutral red counter stain was used for few slides to see the contrast, aggnor for others no counter stain was used. We are thankful to our Prof.

The mean dispersion of AgNOR per cell in normal tissue and reactive gliosis was nil, while low in low-grade astrocytoma and high in high-grade astrocytoma mean 1.

Make sure nylon mesh is soaked thoroughly.

Silver Staining for Nucleolar Organizer Regions

Should not be used because of the blurring of AgNOR staining. These counts were high in all 40 cases of astrocytoma of grades I—IV and normal in normal brain tissue 0. This method saves time, cost and gives far better results. Too long staining results in black nucleoli and eventually black nuclei. The present paper discusses the main technical aspects of NOR silver-staining, and critically evaluates the methods commonly employed for AgNOR protein quantification in routine cyto-histopathology.


It is corrosive, but not really dangerous to human beings, and is used occasionally as a disinfectant. We also pay words of praise for all who helped us in performing laboratory works, writing paper, checking statistics and references.

Acknowledgments We are thankful to our Prof.

It is advisable to wear gloves as the black spots are not very attractive. Role of bioenergy of specific soil SiO 2 of madina munawra on chemically carcinogenesis in albino mice by protecting mutation of p Rinse in distilled water.

The tissue was then incubated in acid alcohol three parts ethanol: The quantity of silver nitrate adequate to stain the number of slide in a atnor batch was used.

Nucleolar organiser regions NORs are defined as nucleolar components containing a set of argyrophilic proteins, which are selectively stained by silver methods. A total of 60 brain specimens were stained with modified AgNOR technique.

This method gives excellent contrast, but you have pgocedure cope with a little bit of xylene smell. Alternatively, you proceure examine the slides directly with immersion oil. There are different methods of AgNOR staining.

Modified method of AgNOR staining for tissue and interpretation in histopathology

Jpn J Human Genet 25, Banacroft J D, Procsdure M, editors. Aneuploidy was indicated when tumours had mAgNOR counts of 2. Small-capped bottles were used in which different quantities of silver nitrate like 1, 2, 3 or 4 g were kept.


National Center for Biotechnology ProcedjreU. Cell proliferation indices, morphometry and DNA flow cytometry provide objective criteria for distinguishing low and high grade bladder carcinomas.

Working solution This was prepared by mixing one part by volume of solution A with two parts by volume of solution B and it was filtered through filter paper into plastic bottle and used immediately because it degrades immediately.

Interphase nucleolar organizer regions in cancer cells.

AgNOR staining and quantification.

This article has been cited by other pricedure in PMC. Mix well and put in a plastic syringe with a millipore filter. In our study, the results of size and dispersion of AgNORs were clearer without the use of counterstain. This will not destroy the silver staining. Naveed, who provided the opportunities and facilities for this research work and encouraged to write it for international readers.

Two investigators without knowledge of the method of AgNOR stain, tumour type, grade, stage, or disease outcome, performed the AgNOR counts, size and distribution.