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Effect of Harmaline on the Enterochromaffin Cells in the Duodenal Mucosa of Mice
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KMID : 0363719760090010055
Abstract
kabstract :
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ÀúÀÚµéÀº harmalineºñ Àå°üÁ¡¸·³»ÀÇ enterochromaffin cell¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ÇüÅÂÇÐÀûÀ¸·Î
°üÂûÇϱâ À§ÇÏ¿© üÁß kg´ç 30mgÀÇ harmalineÀ» üÁß 20gm³»¿ÜÀÇ ¼ö ¸¶¿ì½º¿¡ ´Ü 1ȸ º¹
°³»¿¡ ÁÖ»çÇÑ ´ÙÀ½ ½Ã°£°æ°ú¿¡ µû¶ó 0.5, 1, 2, 3, 6 ¹× 24½Ã°£±ºÀ¸·Î ±¸ºÐÇÏ¿© Èñ»ý½ÃÄ×À¸
¸ç ÀÌµé µ¿¹°ÀÇ ½ÊÀÌÁöÀå Á¶Á÷À» °¡±ÞÀû ÀÏÁ¤ÇÑ ºÎÀ§¿¡¼ ¶¼¾î ³»¾ú´Ù.
±¤ÇÐÇö¹Ì°æ °üÂûÀ» À§ÇÑ Á¶Á÷Àº 10%Áß¼º formaline ¾×¿¡ °íÁ¤ÇÏ¿© paraffin¿¡ Æ÷¸ÅÇÑ ÈÄ
6¥ì µÎ²²ÀÇ ÀýÆíÀ» ÀÛ¼ºÇÏ¿© Masson-Hamper1 µµÀº¹ýÀ¸·Î½á EC cell¸¦ ¿°»öÇÏ¿´À¸¸ç, EC
cellÀÇ ¼ýÀû º¯µ¿Àº °¢ ½ÇÇ豺ÀÇ µµÀºÇ¥º»¿¡¼ Á¡¸·Æø 3.0mm, µÎ²² 6¥ì ³»ÀÇ ÃâÇö¼ö·Î¼ ºñ
±³ÇÏ¿´À¸¸ç °ú¸³·®ÀÇ º¯µ¿Àº ÀÌµé ¼¼Æ÷¿¡ Æ÷ÇԵǾî ÀÖ´Â °ú¸³·®ÀÇ ¸¹°í ÀûÀ½¿¡ µû¶ó º» ¼¼
Æ÷¸¦ 4°¡ÁöÇüÀ¸·Î ±¸ºÐÇÏ¿© ÀÌ¿¡ »ê¼úÀû °¡ÁßÀ» ÇÏ¿© ¾òÀº °ú¸³Áö¼ö·Î¼ ºñ±³ÇÏ¿´´Ù.
ÀüÀÚÇö¹Ì°æ °üÂûÀ» À§Çؼ´Â harmaline Åõ¿© ÈÄ µ¿¹°ÀÇ ¹ÝÀÀÀÌ °¡Àå ½ÉÇß´ø 1½Ã°£±º°ú 2
½Ã°£±º¸¸À» ÅÃÇÏ¿© Á¶Á÷À» ¶¼¾î³½ Áï½Ã glutaraldehyde-paraformalde-hyde È¥Çվ׿¡ °íÁ¤ÇÑ
ÈÄ osmic acid¿¡ Àç°íÁ¤ÇÏ¿© uranyl acetate-lead citrate Áß¿°»öÀ» ÇÏ¿´À¸¸ç, °üÂû±âÁØÀº ½Ê
ÀÌÁöÀåÀÇ ³»ºÐºñ¼¼Æ÷Áß serotoninÀÇ ºÐºñ¼¼Æ÷·Î ÀÎÁ¤µÇ´Â biconcave granule cell°ú ±× ºÐºñ
È£¸£¸óÀÇ ¼ºÁúÀÌ È®Á¤µÇÁö ¸øÇÑ spherical granule cell·Î ±¸ºÐÇÏ¿© °üÂûÇÑ ¹Ù ´ÙÀ½°ú °°Àº
°á·ÐÀ» ¾ò¾ú´Ù.
1. ±¤ÇÐÇö¹Ì°æÀû °üÂû¿¡¼ harmaline Åõ¿© ÈÄ enterochromaffin cellÀÇ °ú¸³ÀÌ ±Þ¼ÓÈ÷ °¨¼Ò
ÇÏ¿© 2½Ã°£ ÈÄ¿¡´Â °ÅÀÇ ¹Ý°¨ÇÏ¿´À¸³ª 3½Ã°£ ÀÌÈĺÎÅÍ ºñ±³Àû ¼¼È÷ ȸº¹Çϱ⠽ÃÀÛÇÏ¿© 24
½Ã°£ ÈÄ¿¡´Â °ÅÀÇ Á¤»ó±ºÀÇ ¼öÁØÀ¸·Î ȸº¹µÇ¾ú´Ù.
2. ÀüÀÚÇö¹Ì°æÀûÀ¸·Î´Â biconcave granule cellÀº ¿©·¯ÇüÅ (concave, ¿øÇü, Ÿ¿øÇü, °£»óÇü
µî)ÀÇ °ú¸³ÀÌ ÀÖÀ¸¸ç ÀüÇüÀûÀÎ biconcave granuleÀÇ Å©±â´Â 110¡150m¥ì¡¿200¡350m¥ìÀ̾ú
À¸¸ç, ´ëºÎºÐÀÌ ¿øÇüÀÎ spherical granule cellÀÇ °ú¸³ (Áö¸§ 250¡450mr) º¸´Ù ´Ù¼Ò ÀÛ¾Ò´Ù.
3. harmalineÅõ¿© ÈÄ biconcave granule cellÀº granular endoplasmic reticulumÀÌ È®ÀåµÇ
°í ¿©·¯°¡Áö Å©±âÀÇ °øÆ÷°¡ Áõ°¡ÇÏ¿´À¸¸ç, GolgiÀåÄ¡µµ ´Ù¼Ò À§ÃàµÇ¾ú°í, mitochondriaÀÇ ÆÄ
±«¿Í lysosome³»ÀÇ lipofuscin-pigment depositµµ °üÂûµÇ¾ú´Ù. ±×·¯³ª spherical granule call
¿¡´Â º°´Ù¸¥ º¯È¸¦ ÁÖÁö ¾Ê¾Ò´Ù.
4. ÀÌ»óÀÇ »ç½Ç·Î º¸¾Æ harmalineÀº ½ÊÀÌÁöÀå Á¡¸·³»ÀÇ ³»ºÐºñ¼º ¼¼Æ÷ Áß¿¡¼
enterochromaffin cellÀÇ °ú¸³ºÐºñ¸¦ ÃËÁø½ÃŲ´Ù°í »ý°¢µÈ´Ù.
#ÃÊ·Ï#
-Abstract-
This experiment was performed to study on the morphological changes of the
enterochromaffin cell in the duodenal mucosa of mice following harmaline injection.
Healthy adult male mice weighing about 20 gm were used as experimental animal and
divided into normal and harmaline-treated groups. Harmaline was injected
intraperitoneally in a single dose of 30 mg / kg body weight to each animal. Harmaline
treated mice were sacrificed on the 30th minute, 1st, 2nd, 3rd, 6th, 24th hour after the
injection.
Mucosal specimens from the duodenum of the experimental mice were fixed in 10%
neutral formalin solution, embedded in paraffin wax, sectioned at a thickness of 6¥ì, and
impregnated by Masson-Hamperl's silvering method for light microscopy. The numerical
changes of the enterochromaffin cells were counted in the mucosae of 3.0 mm width and
6¥ìthickness, and the changes of granularity of the cells were evaluated by the
granulation indices weighted to four cell types classified according to the degree of
granularity of the cells.
For electron microscopy, harmaline-treated mice were sacrificed on the 1st and 2nd
hour after the injection. The tissues were fixed in glutaraldehyde-paraformaldehyde
mixed solution and 1% osmium tetroxide, embedded in Epon 812, and sectioned with the
JUM-7A ultramicrotome, stained with uranyl acetate and lead citrate, and observed by
JEM-100B electron microscope. Biconcave granule cells and spherical granule cells were
observed.
The results were as follows:
1. In the early stage of harmaline administration, number and granularities of the
enterochromaffin cells distinctly decreased and reached to nearly half value on the 2nd
hour after the injection. Relatively slow recovery of the number and granularities of the
cell were noticed from three hour after the injection, and returned to normal limit on the
24th hour after the injection.
2. Granules of the biconcave granule cell showed various forms (biconcave, round,
rod-like, oval, etc.) and average of typical biconcave granules was 110~150¡¿200~350 m
¥ì, and round granules of a spherical granule cell were 250~450 m¥ì in diameter.
3. After the harmaline injection, the enterochromaffin cells showed dilation of
endoplasmic reticulum, increase of vacuole, shrinkage of Golgi apparatus, rupture of
mitochondria, and lipofuscin-pigment deposit in lysosome were observed. But spherical
granule cells were not affected.
4. The above finding refer that the harmaline accelerates the initial massive release of
the granules of the enterochromaffin cell among the endocrine cells of the duodenal
mucosae.
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