Korean Journal of Veterinary Research 2002;42(3):289-297.
An Immunohistochemical Study on the Endocrine Cells in the Gastrointestinal Tract of the Mandarin Fish (Siniperca scherzeri)
Jae-Hyun Lee1, Sae-Kwang Ku2, Ki-Dae Park1, Hyeung-Sik Lee3
1Department of Histology, College of Veterinary Medicine, Kyungpook National University
2Pharmacology & Toxicology Lab., Central Research Laboratories, Dong-Wha Pham. Ind. Co.
3Department of Biology. Faculty of Natural Sciences, Kyungsan University
쏘가리의 위장관 내분비세포에 관한 면역조직화학적 연구
이재현1, 구세광2, 박기대1, 이형식3
1경북대학교 수의과대학 조직학교실
2동화약품(주) 중앙연구소 약리독성연구실
3경산대학교 자연과학부 생물학과
Abstract
The regional distribution and relative frequency of neurohormonal peptides-producing cells were demonstrated in the gut of the stomach teleost, the Mandarin fish, Siniperca scherzeri Steindachner, using 7 types of specific antisera raised against mammalian regulatory peptides. The gastrointestinal tract of the Mandarin fish was divided into three portions from proximal to distal, stomach, small intestine and large intestine. Cells showing immunoreactivities against regulatory peptides were situated in the epithelial lining, between epithelial cells, and gastric or intestinal gland regions with various frequencies along with gastrointestinal tract. Mast of immunoreactive cells in the epithelial lining portion were generally spherical or spindle shape having long cytoplasmic process that were reached to the lumen (open type cell) while cells showing round in shape (closed type cell) were found in the gastric gland of the stomach occasionally. Serctonin-, samatostatin-, gastrin-, cholecystokinin (CCK)-8- and human pancreatic polypeptide (HPP)-immunoreactive cells were observed in this study. However, no insulin- and glucagon-immunoreactive cells were found. Serotonin- and somatostatin-immunoreactive cells were restricted to the stomach regions with moderate and numerous frequencies, respectively. Gastrin-immunoreactive cells were demonstrated in the stomach and small intestinal portions with a few and moderate frequencies, respectively and CCK-8-immunoreactive cells were restricted to the small intestinal portions with moderate frequency. In addition, HPP-immunoreactive cells were demonstrated in the stomach and small intestine with numerous frequencies, respectively. In conclusion, the distribution and relative frequency of these immunoreactive cells in the gastrointestinal tract of the Mandarin fish shows peculiar patterns compared to those of other stomach and/or stomachless teleost.
Key Words: Immunohistochemistry, gastrointestinal tract, Mandarin fish, teleost, regulatory peptides, Siniperca scherzeri


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