Abstract:
OBJECTIVES:The specific goal of this study was to establish a simple histochemical technique by which the glycosaminoglycan (GAG) lining in the rabbit bladder can be routinely identified. METHODS:Rabbit bladder tissues were fixed in zinc formal, 10% neutral buffered formalin (NBF), 20% NBF, 40% NBF, 2% calcium acetate in 10% NBF, 2% sodium acetate in 10% NBF, 1% cetylpyridinium chloride in 10% NBF, 80% alcohol, histochoice, and 2.5% glutaraldehyde in 0.1 M cacodylate buffer. The following histochemical staining was used: mucicarmine/metanil yellow, colloidal iron, deamination followed by colloidal iron, periodic acid-Schiff, saponification followed by colloidal iron, Alcian blue (AB) at variable pH values, combined aldehyde-fuchsin/AB, performic acid/AB, AB/Alcian yellow, high temperature (60 degrees C) methylation/saponification/AB, and AB/nuclear fast red at pH 5.8 with critical electrolyte concentrations with or without deamination. RESULTS:AB with sodium acetate buffer at pH 5.8 containing 0.6 M or 0.8 M magnesium chloride (MgCl2) showed a well-defined thin GAG lining on the surface of the urothelium, whereas histochemical staining used by previous investigators showed only patchy distribution. There was no observable difference due to the gender, fixative, or region of the bladder from which the tissue was obtained. CONCLUSIONS:A very thin lining of GAG exists in the rabbit bladder which can be localized by AB in sodium acetate buffer at pH 5.8 containing 0.6 M or 0.8 M MgCl2 but not by conventional histochemical techniques. This method now can be applied to answer many questions regarding urothelial function.
journal_name
Urologyjournal_title
Urologyauthors
Grist M,Chakraborty Jdoi
10.1016/s0090-4295(94)80005-7subject
Has Abstractpub_date
1994-07-01 00:00:00pages
26-33issue
1eissn
0090-4295issn
1527-9995pii
S0090-4295(94)80005-7journal_volume
44pub_type
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