Histochemical Activity of Carbonic Anhydrase in Testicular and Excurrent Ducts of Immature, Mature Intact and Androgen-Deprived Bulls

Abstract

Carbonic anhydrase activity was investigated histochemically in the testicular and excurrent

Histochemical Localization of Carbonic Anhydrase in the Testis and Epididymis of the Boar

“…Similarly stained apical cells were found in the rat by Cohen et al [ 18]. who ascribed an acidifying function to the cells, and in the bull by Goyal et al [19]. These apical cells correspond to the cell type named 'narrow cell' by Sun and Flickinger [20).…”

The Role of Na+−H+ Exchange in Fluid and Solute Transport in the Rat Efferent Ducts

“…Further experiments to establish the presence of Cl¦-base (hydroxyl, formate, oxalate or bicarbonate) apical exchangers will contribute greatly to a more complete model for epithelial transport in the efferent ducts. The entire length of the efferent duct epithelium stains intensely for carbonic anhydrase activity (Cohen et al 1976;Goyal et al 1980) also raising the possibility that Na¤-H¤ exchange and carbonic anhydrase activity may be associated with HCOצ reabsorption (Ilio & Hess, 1994). The proportion of water and solute reabsorption which was not inhibited by amiloride in this study and in the proximal tubule (Chantrelle et al 1985) is probably due to a substantial reabsorption by passive diffusion through the paracellular pathway.…”

Expression of carbonic anhydrase isoenzymes IV and II in rat epididymal duct

“…Recently, Brown et al [39] reported that a cell population in the rat epididymal duct also expresses high levels of a vacuolar H+-ATPase. Moreover, earlier histochemical and biochemical studies have demonstrated the presence of CA activity in the epididymis of the rat [23] and of other species as well [40][41][42]. Histochemical or biochemical methods could not, however, distinguish different CA.…”