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ÈòÁã ÃéÀå ¼±Æ÷¿¡¼­ Cholecystokinin¿¡ ÀÇÇØ À¯¹ßµÈ Amylase À¯¸®¿¡ ¹ÌÄ¡´Â SomatostatinÀÇ ¿µÇâ Effect of Somatostatin on Cholecystokinin-Induced Amylase Release in Rat Pancreatic Acini

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ÀÌ´öÁÖ/Duck Joo Rhie ÃÖȯ¼®/À̼¼¿µ/À±½ÅÈñ/ÇÑ»óÁØ/½É»ó¼ö/±è¸í¼®/Á¶¾çÇõ/Whan Seok Choi/Sae Young Yi/Shin Hee Yoon/Sang June Hahn/Sang Soo Sim/Myung Suk Kim/Yang Hyeok Jo

Abstract

¿ä¾à
¸ñÀû : CCK·Î À¯µµµÈ amylase À¯¸®¿¡ ´ëÇÑ somatostatin (SS)ÀÇ ¾ïÁ¦ È¿°ú¿Í ÀÌ °úÁ¤¿¡¼­
¼¼Æ÷³» cAMPÀÇ ¿ªÇÒÀ» Á¶»çÇÏ¿´´Ù.
´ë»ó ¹× ¹æ¹ý : ¼öÄÆ ÈòÁãÀÇ ÃéÀåÀ» ÀûÃâÇÑ ÈÄ collagenase°¡ ÇÔÀ¯µÈ ¿ë¾×À¸·Î ó¸®ÇÏ¿© Ãé
Àå ¼±Æ÷¸¦ ºÐ¸®ÇÏ¿´´Ù. À¯¸®µÈ amylase È°¼ºÀ» ÃøÁ¤ÇÏ¿´´Ù. ¶ÇÇÑ ÀϺÎÀÇ ½ÇÇè¿¡¼­ ¾à¹°¿¡
¹ÝÀÀÇÑ cAMP¿Í inositol phosphate (IP) Çü¼ºÀ» ÃøÁ¤ÇÏ¿´´Ù.
°á°ú : SS-14´Â CCK-8·Î amylase À¯¸®¸¦ ÃËÁø½ÃŲ ÃéÀå ¼±Æ÷¿¡¼­ amylase À¯¸®¸¦ ¾ïÁ¦
ÇÏ¿´´Ù. Somatostatin À¯»çüÀÎ octreotide´Â ¶ÇÇÑ °°Àº Á¤µµ·Î CCK-8·Î À¯µµµÈ amylase
À¯¸®¸¦ ¾ïÁ¦ÇÏ¿´´Ù. CCK-8¿¡ ÀÇÇÑ amylase À¯¸®¿¡ ´ëÇÑ octreotideÀÇ ¾ïÁ¦ È¿°ú´Â
8-bromo-cAMP Á¸Àç½Ã¿¡ °üÂûµÇÁö ¾Ê¾Ò´Ù. Adenylyl cyclase È°¼ºÁ¦ÀÎ forskolinÀº CCK-8
¿¡ ÀÇÇÑ amylase À¯¸®¸¦ °­È­½ÃÄ×´Ù. ±×·¯³ª, CCK-8°ú octreotideÀÇ µ¿½Ã Åõ¿©¿¡ ÀÇÇÑ
amylase À¯¸®´Â forskolin¿¡ ÀÇÇØ º¯È­µÇÁö ¾Ê¾Ò°í, ¹Ý¸é¿¡ cAMP¼öÁØÀº forskolin¿¡ ÀÇÇؼ­
À¯ÀÇÇÏ°Ô Áõ°¡µÇ¾ú´Ù. CCK-8 ´Üµ¶À¸·Î´Â º¯È­¸¦ ³ªÅ¸³»Áö ¾Ê´õ¶óµµ, octreotide´Â ±âº»ÀûÀÎ
¼¼Æ÷³» cAMP ³óµµ¸¦ À¯ÀÇÇÏ°Ô ¾ïÁ¦Çß´Ù. CCK-8¿¡ ÀÇÇØ Áõ°¡µÈ IPÇü¼º¿¡ octreotideÀÇ ¿µ
ÇâÀº ¾ø¾ú´Ù. Tyrosine phosphatase ¾ïÁ¦Á¦µµ CCK-8¿¡ ÀÇÇÑ amylase À¯¸®¿¡ ´ëÇÑ
octreotideÀÇ ¾ïÁ¦ È¿°ú¿¡ ¾Æ¹«·± ¿µÇâÀ» ÁÖÁö ¸øÇÏ¿´´Ù.
°á·Ð : ÈòÁã¿¡¼­ ºÐ¸®ÇÑ ÃéÀå ¼±Æ÷¿¡¼­ SS´Â CCK¿¡ ÀÇÇØ À¯¹ßµÈ amylase À¯¸®¿¡ ¾ïÁ¦ ÀÛ
¿ëÀ» ³ªÅ¸³½´Ù. ±×¸®°í octreotide¿¡ ¹ÝÀÀÇÏ¿© °¨¼ÒµÈ amylaseÀ¯¸®´Â ¾ÆÁ÷ ¹àÇôÁöÁö ¾ÊÀº °ú
Á¤°ú °ü·ÃµÇ¾î ¼¼Æ÷³» ±âº»ÀûÀÎ cAMP Çü¼ºÀÌ ¾ïÁ¦µÇ´Â °Í°ú °ü·ÃµÇ¾î ÀÖ´Â °Í °°´Ù.
#ÃÊ·Ï#
Background/Aims : The inhibitory effect of somatostatin (SS) on cholecystokinin
(CCK)-induced amylase release and the role of intracellular cAMP in this process were
investigated.
Methods : Pancreatic acini were isolated from rat pancreas and treated with solution
involving collagenase and then, dispersed. Amylase release was measured. In another set
of experiment, cAMP and inositol phosphate (IP) formation were measured.
Results : SS-14 inhibited CCK-8-induced amylase release. Octreotide, somatostatin
analog, also inhibited CCK-8-induced amylase release equipotently. The inhibitory effect
of octreotide on CCK-8-induced amylase release was not found in the presence of
However, the amylase release achieved by the simultaneous administration of CCK-8
and octreotide was not altered by forskolin, while the cAMP level in response to the
administration of CCK-8 and octreotide was increased significantly by forskolin.
Octreotide inhibited the basal cellular cAMP level significantly, but CCK-8 alone did not
exhibit any change. CCK-8-induced IP formation was not changed by octreotide.
Tyrosine phosphatase inhibitors did not affect inhibitory action of octreotide on
CCK-8-induced amylase release.
Conclusions : From the above results, it is concluded that SS inhibits amylase release
induced by CCK in dispersed pancreatic acini of rat. A decrease in pancreatic amylase
release in response to octreotide may be attributed to inhibited basal cAMP formation.
Further study is needed to elucidate the related process.

Å°¿öµå

ÃéÀå ¼±Æ÷; Somatostatin; Cholecystokinin; cAMP; Pancreatic acini; Somatostatin; Cholecystokinin; cAMP;

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