Summary
The immunogold-silver staining technique is shown to be of great value in the detection of regulatory peptide-containing nerves and endocrine cells in routinely fixed, paraffin-wax-embedded tissues. The method appears to be better for this system than peroxidase anti-peroxidase (PAP) which can yield poor or variable results.
Antibodies to regulatory peptides, including calcitonin gene-related peptide (CGRP), substance P, neuropeptide tyrosine (NPY), glucagon, pancratic polypeptide, and somatostatin 14 and 28, as well as to neurofilaments, neuronspecific enolase (NSE) and S-100, were used on sections of a variety of tissues from rat and pig including respiratory tract, skin, gut, pancreas, vagina, uterus, fallopian tube and kidney. In all cases, stronger immunostaining of nerves was obtained with the immunogold-silver technique than with PAP. The inherent density of the staining was also found to improve the visibility of endocrine cells in the section, and to permit the use of routine histological stains for counterstaining.
As immunogold-silver staining is sensitive, rapid, cheap and avoids hazardous reagents, we feel it has great potential for the immunostaining of nerves and endocrine cells that contain regulatory peptides in routinely fixed and embedded tissues and may prove useful in pathology.
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Springall, D.R., Hacker, G.W., Grimelius, L. et al. The potential of the immunogold-silver staining method for paraffin sections. Histochemistry 81, 603–608 (1984). https://doi.org/10.1007/BF00489542
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DOI: https://doi.org/10.1007/BF00489542