Immunohistochemical Localization of Carbonic Anhydrase Isoenzymes in Salivary Gland and Intestine in Adult and Suckling Pigs.

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  • AMASAKI Tomoko
    Department of Anatomy and Physiology, School of Veterinary Medicine, Azabu University
  • AMASAKI Hajime
    Department of Veterinary Anatomy, Nippon Veterinary and Animal Science University
  • NAGASAO Jun
    Department of Veterinary Anatomy, School of Veterinary Medicune and Animal Sciences, Kitasato University
  • ICHIHARA Nobutsune
    Department of Anatomy and Physiology, School of Veterinary Medicine, Azabu University
  • ASARI Masao
    Department of Anatomy and Physiology, School of Veterinary Medicine, Azabu University
  • NISHITA Toshiho
    Department of Anatomy and Physiology, School of Veterinary Medicine, Azabu University
  • TANIGUCHI Kazumi
    Department of Veterinary Anatomy, School of Veterinary Medicune and Animal Sciences, Kitasato University
  • MUTOH Ken-ichiro
    Department of Veterinary Anatomy, School of Veterinary Medicune and Animal Sciences, Kitasato University

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  • Immunohistochemical Localization of Carbonic Anhydrase Isoenzumes in Salivary Gland and Intestine in Adult and Suckling Pigs

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Localizations of carbonic anhydrase isoenzymes (CA I, CA II and CA III) were investigated immunohistochemically in the salivary glands and intestine of mature and suckling pigs. Carbonic anhydrase isoenzymes were not detected in the salivary glands of sucklings, but were present in the adult. Bicarbonate ion in saliva might be important for the digestion of solid foods in mature pigs, but unnecessary for the digestion of milk in sucklings. Expressions of CAI and CAII were detected strongly in the large intestine of the adult and sucklings, and faintly only at duodenum in the small intestine. CA I and CA II isoenzymes in the large intestine may be involved, at least in part, in ion absorption and water metabolism during digestion and absorption of milk in suckling pigs. In addition, CA I and CA II expression in the duodenal villus enterocyte may support the process of bicarbonate absorption in the duodenum.

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