Àá½Ã¸¸ ±â´Ù·Á ÁÖ¼¼¿ä. ·ÎµùÁßÀÔ´Ï´Ù.

¸¶¿ì½º ºñÀå¼¼Æ÷¿¡¼­ ¹æ»ç¼±À¯µµ¼º ¾ÆÆ÷Åä½Ã½º¿¡ ´ëÇÑ EGCG È¿°úÀÇ ºÎÁ· Lack of EGCG Effects on Radiation-Induced Apoptosis of Mice Splenocytes

´ëÇѹæ»ç¼±Á¾¾çÇÐȸÁö 2008³â 26±Ç 3È£ p.173 ~ 180
À强¼ø, ÀÌÈñ°ü,
¼Ò¼Ó »ó¼¼Á¤º¸
À强¼ø ( Jang Sung-Soon ) 
°¡Å縯´ëÇб³ ÀÇ°ú´ëÇÐ ¹æ»ç¼±Á¾¾çÇб³½Ç

ÀÌÈñ°ü ( Lee Heui-Kwan ) 
°¡Å縯´ëÇб³ ÀÇ°ú´ëÇÐ ¼º¸ðº´¿ø ¹æ»ç¼±Á¾¾çÇб³½Ç

Abstract

¸ñ Àû: Ä¡»ç¼±·®ÀÇ ¹æ»ç¼±¿¡ ÀÇÇØ À¯µµµÇ´Â ¾ÆÆ÷Åä½Ã½º¿¡ ´ëÇØ Ç×»êÈ­Á¦ ¶Ç´Â »êÈ­Á¦·Î ¾Ë·ÁÁø EGCG°¡ ¾î¶² È¿°ú
¸¦ ³ªÅ¸³»´ÂÁö¸¦ ¸¶¿ì½º ºñÀå¿¡¼­ ¿¬±¸ÇÏ¿´´Ù.

´ë»ó ¹× ¹æ¹ý: C57BL/6 ¸¶¿ì½º¸¦ ½ÇÇ豺¿¡ µû¶ó Á¤»ó´ëÁ¶±º, ¹æ»ç¼±Á¶»ç ´Üµ¶±º, EGCG Àüóġ±º(¹æ»ç¼±Á¶»ç 1½Ã°£ Àü¿¡ 100 mg/kg º¹°­ÁÖ»ç)À¸·Î ºÐ·ùÇÏ°í 7 GyÀÇ ´ÜÀϼ±·®À¸·Î Àü½ÅÁ¶»ç ÇÏ¿´´Ù. °¢ ½ÇÇ豺º° ºñÀå ³»ÀÇ ¾ÆÆ÷Åä½Ã½º´Â TUNEL assay¸¦ ÅëÇØ ºÐ¼®ÇÏ¿´°í, Bax¿Í Bcl-2 À¯ÀüÀÚ ¹ßÇöÀº Western blotting ¹æ¹ýÀ¸·Î ÃøÁ¤ÇÏ¿´´Ù.

°á °ú: ºñÀå ³» ¾ÆÆ÷Åä½Ã½º´Â ÁÖ·Î white pulp¿¡¸¸ ±¹ÇÑµÇ¾î ¹ß°ßµÇ¾úÀ¸¸ç, ¹æ»ç¼±Á¶»ç ÈÄ 8½Ã°£Â°¿¡ ÃÖ´ëÀÇ ¾ÆÆ÷
Åä½Ã½ºÁö¼ö¸¦ ³ªÅ¸³Â´Ù. 8½Ã°£Â°¿¡ ¹æ»ç¼±Á¶»ç ´Üµ¶±º°ú EGCG Àüóġ±ºÀÇ ¾ÆÆ÷Åä½Ã½ºÁö¼ö´Â 53.9%¿Í 52.1%·Î À¯ÀÇÇÑ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù(p=0.328). ¶ÇÇÑ µÎ±º°£¿¡ Bax/Bcl-2 ratio (1.64 vs 0.97, p=0.037)¿Í ´ëÁ¶±º¿¡ »ó´ëÀûÀÎ Bcl-2 ´Ü¹éÁú ¹ßÇö(0.57 vs 0.82, p=0.037)¿¡¼­´Â À¯ÀÇÇÑ Â÷À̸¦ º¸¿´À¸³ª, Bax ¹ßÇö(0.86 vs 0.81, p=0.335)¿¡¼­´Â Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù.

°á ·Ð: ¸¶¿ì½º ºñÀå¼¼Æ÷¿¡¼­ EGCG°¡ ¹æ»ç¼±¿¡ ÀÇÇØ À¯µµµÇ´Â ¾ÆÆ÷Åä½Ã½º¸¦ À¯ÀÇÇÏ°Ô °¨¼Ò½ÃÅ°Áö ¸øÇÏ¿´°í, Ãß°¡ÀûÀÎ ¾ÆÆ÷Åä½Ã½ºÀÇ Áõ°¡¸¦ À¯¹ßÇÏÁöµµ ¾Ê¾Ò´Ù.

Purpose: The modification of radiation-induced apoptosis by EGCG, known as antioxidants or oxidants, was
studied in mice spleens irradiated with a lethal dose.

Materials and Methods: Male C57BL/6 mice were divided into control, irradiation-only, and EGCG (100 mg/kg
i.p. 1 h before irradiation) pretreatment groups. The mice were irradiated with a single whole-body dose of 7Gy. The apoptosis in the spleens after irradiation of the lethal dose were analyzed by TUNEL assay. In addition,the expression levels of the Bax and Bcl-2 proteins were quantified using a Western blotting method.

Results: The induction of apoptosis was detected in the splenic white pulp. The highest level of apoptosis was
detected at 8 hours after irradiation. No significant difference was identified by the apoptotic index (53.9% vs.52.1%, p=0.328) and relative Bax protein expression (0.86 vs. 0.81, p=0.335), between the irradiation-only and EGCG pretreatment group, respectively. However, a lower Bax/Bcl-2 ratio (1.64 vs. 0.97, p=0.037) and higher relative expression level of Bcl-2 protein (0.57 vs. 0.82, p=0.037) was measured in the EGCG pretreatment group.

Conclusion: The EGCG pretreatment neither decreased the radiation-induced apoptosis in mice splenocytes,
nor induced additional apoptosis.

Å°¿öµå

¹æ»ç¼±;¾ÆÆ÷Åä½Ã½º
EGCG;Radiation;Apoptosis

¿ø¹® ¹× ¸µÅ©¾Æ¿ô Á¤º¸

   

µîÀçÀú³Î Á¤º¸

KCI
KoreaMed
KAMS