Korean Journal of Veterinary Research (대한수의학회지)

The Korean Society of Veterinary Science (대한수의학회)
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An Immunohistochemical Study on the Endocrine Cells in the Gastrointestinal Tract of the Mandarin Fish (Siniperca scherzeri)

쏘가리의 위장관 내분비세포에 관한 면역조직화학적 연구

  • Lee, Jae-Hyun (Department of Histology, College of Veterinary Medicine, Kyungpook National University) ;
  • Ku, Sae-Kwang (Pharmacology & Toxicology Lab., Central Research Laboratories, Dong-Wha Pham. Ind. Co.) ;
  • Park, Ki-Dae (Department of Histology, College of Veterinary Medicine, Kyungpook National University) ;
  • Lee, Hyeung-Sik (Department of Biology. Faculty of Natural Sciences, Kyungsan University)
  • 이재현 (경북대학교 수의과대학 조직학교실) ;
  • 구세광 (동화약품(주) 중앙연구소 약리독성연구실) ;
  • 박기대 (경북대학교 수의과대학 조직학교실) ;
  • 이형식 (경산대학교 자연과학부 생물학과)
  • Accepted : 2002.08.12
  • Published : 2002.09.30
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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.

쏘가리 (Siniperca scherzeri Steindachner)의 위장관에 존재하는 내분비세포의 부위별 분포 및 출현빈도를 포유류의 peptide에 대한 7종류의 항혈청을 사용하여 면역조직화학적 방법으로 관찰하였다. 쏘가리의 위장관은 근위부에서부터 원위부까지 위, 소장 및 대상으로 3 등분 하였으며, 다양한 종류의 항혈청에 면역반응성을 나타내는 면역반응세포들이 상피세포 사이와 위샘 또는 장샘에서 관찰되었다. 상피세포 사이에서는 대부분의 면역반응세포들은 장 내강까지 신장되어 있는 긴 세포질 돌기를 함유한 방추형의 개방형 세포 (open type cell)로 관찰되었으며, 세포질 돌기 없이 원형 또는 타원형의 형태를 나타내는 폐쇄형 세포 (close type cell)들이 위 부위에서 소수 관찰되었다. 본 실험에서는 serotonin, somatostatin, pastrin, cholecystokinin (CCK)-8 및 human pancreatic polypeptide (HPP) 면역반응세포들이 관찰되었으나, insulin 및 glucagon 면역반응세포들은 관찰되지 않았다. Serotonin 및 somatostatin 면역반응세포들은 위 부위에 국한되어 각각 중등도 및 다수의 출현빈도로 관찰되었다. 또한 gastrin 면역반응세포들은 위와 소장에서 출현하였으며, 각각 소수 및 중등도의 출현빈도를 나타내었고, CCK-8 면역반응세포들은 소장에 국한되어 중등도의 출현빈도를 나타내었다. 한편 HPP 면역반응세포들은 위와 소장에서 다수 관찰되었다. 이상에서 쏘가리 위장관 내분비세포들의 부위별 분포 및 출현 빈도는 다른 경골어류에 비해 특이한 양상을 나타내는 것으로 관찰되었다.

Keywords

References

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