Àá½Ã¸¸ ±â´Ù·Á ÁÖ¼¼¿ä. ·ÎµùÁßÀÔ´Ï´Ù.

¸»ÃÊÇ÷¾× ³» ¸²ÇÁ±¸ÀÇ ¹æ»ç¼±¿¡ ÀÇÇÑ ¾ÆÆ÷ÇÁÅä½Ã½º Radiation-Induced Apoptosis of Lymphocytes in Peripheral Blood

´ëÇѹæ»ç¼±Á¾¾çÇÐȸÁö 2003³â 21±Ç 1È£ p.75 ~ 81
¼Ò¼Ó »ó¼¼Á¤º¸
¿ÀÀ±°æ/Oh YK ÀÌŹü/³²ÅñÙ/±â±ÙÈ«/ÃÖöÈñ

Abstract

¸ñ Àû : ¹æ»ç¼±¿¡ ÀÇÇØ À¯µµµÇ´Â ¸²ÇÁ±¸ÀÇ ¾ÆÆ÷ÇÁÅä½Ã½º¸¦ Á¤»ó ¼ºÀÎÀÇ ¸»ÃÊ Ç÷¾×¿¡¼­ À¯¼¼Æ÷°èÃø°Ë»ç·Î ÃøÁ¤ÇÒ ¶§ ¼Ò·®ÀÇ Ç÷¾×À¸·Îµµ °Ë»ç°¡ °¡´ÉÇÑ°¡¸¦ ¾Ë¾Æº¸°í ¼±·® Áõ°¡¿Í ¹æ»ç¼±Á¶»ç ÈÄ ½Ã°£ °æ°ú¿¡ µû¸¥ ¹ÝÀÀ Á¤µµ¸¦ ¾Ë¾Æ º¸°íÀÚ º» ¿¬±¸¸¦ ½ÃÇàÇÏ¿´´Ù.

´ë»ó ¹× ¹æ¹ý : °Ç°­ÇÑ ¼ºÀÎ ³²³à 11¸íÀ» ¿¬±¸ ´ë»óÀ¸·Î ÇÏ¿© ¸»ÃÊÇ÷¾× 10 mL¿¡¼­ ¸²ÇÁ±¸¸¦ ºÐ¸®ÇÏ°í À̸¦ °¢°¢ 15°³·Î ³ª´©¾î¼­ ½ÇÇèÇÏ¿´´Ù. ¼±Çü°¡¼Ó±â¸¦ ÀÌ¿ëÇÏ¿© 0.5, 1, 2, 5 GyÀÇ ¹æ»ç¼±À» Á¶»çÇÑ ÈÄ 24, 48, 72½Ã°£ µ¿¾È ¹è¾çÇÏ¿´´Ù. ¸²ÇÁ±¸ÀÇ ¾ÆÆ÷ÇÁÅä½Ã½º¸¦ Á¤·®ÀûÀ¸·Î ÃøÁ¤Çϱâ À§ÇØ À¯¼¼Æ÷°èÃø°Ë»ç¸¦ ½ÃÇàÇÏ¿´À¸¸ç, º°µµ·Î DNA fragmentation assay¿Í ÀüÀÚÇö¹Ì°æ°Ë»ç¸¦ ÀÌ¿ëÇÏ¿© ¾ÆÆ÷ÇÁÅä½Ã½º ¼Ò°ßÀ» Ãß°¡·Î °üÂûÇÏ¿´´Ù.

°á °ú : ¹æ»ç¼±À» Á¶»çÇÏÁö ¾Ê¾ÒÀ» ¶§ÀÇ Àڹ߼º ¾ÆÆ÷ÇÁÅä½Ã½ºÀ²(%)Àº ¹è¾ç ÈÄ 24, 48, 72½Ã°£ÀÌ °æ°úÇÔ¿¡ µû¶ó Áõ°¡ÇÏ´Â ¼Ò°ßÀ» º¸¿´´Ù(1.761¡¾0.161, 3.563¡¾0.564, 11.098¡¾2.849). ¶ÇÇÑ 0.5, 1, 2, 5 GyÀÇ ¹æ»ç¼±À» Á¶»çÇÏ¿© 24, 48, 72½Ã°£ µ¿¾È ¹è¾çÇÑ ÈÄ ÃøÁ¤ÇÑ ¾ÆÆ÷ÇÁÅä½Ã½ºÀ²(%)Àº ¼±·® Áõ°¡¿Í ¹æ»ç¼±Á¶»ç ÈÄ ½Ã°£ °æ°ú¿¡ µû¶ó Á¡Â÷ Áõ°¡ÇÏ¿´´Ù. ¹æ»ç¼±Á¶»ç ÈÄ 24½Ã°£ ÈÄ¿¡ 0.5¡­1, 1¡­2, 2¡­5 Gy±¸°£ÀÇ ¾ÆÆ÷ÇÁÅä½Ã½ºÀ²ÀÇ Áõ°¡´Â ºñ±³Àû Àú ¼±·® ¿µ¿ªÀÎ 0.5¡­1, 1¡­2 Gy¿¡¼­ 2¡­5 Gy ±¸°£º¸´Ù ´õ Å« ±â¿ï±â¸¦ º¸¿´°í, 48, 72½Ã°£ ÈÄ¿¡µµ 0.5¡­1 Gy±¸°£¿¡¼­ °¡Àå Å« ±â¿ï±â¸¦ º¸¿´´Ù.

°á ·Ð : À¯¼¼Æ÷°èÃø°Ë»ç´Â 10 mLÀÇ Ç÷¾×À¸·Î 15°³ÀÇ °Ë»ç °á°ú¸¦ ³¾ ¼ö ÀÖ¾úÀ¸¹Ç·Î ÇÑ °Ë»ç´ç 1 mL ¹Ì¸¸ÀÇ Ç÷¾×À¸·Îµµ ÃæºÐÈ÷ °Ë»çÇÒ ¼ö ÀÖ°ÚÀ¸¸ç, ¹æ»ç¼±·® Áõ°¡¿¡ µû¶ó ¹ÝÀÀÀÇ Á¤µµµµ Áõ°¡ÇÏ¿´À¸¸ç, ¾ÆÆ÷ÇÁÅä½Ã½º °üÂû ½Ã±â´Â Ç÷¾× äÃë ÈÄ 24½Ã°£À̳ª 48½Ã°£ ÈÄ°¡ ÀûÀýÇÏ´Ù°í »ç·áµÈ´Ù.

Purpose : This study quantitatively evaluated the apoptosis in human peripheral blood lymphocytes using flow cytometry, and investigated the possibility of using this method, with a small amount of blood, and the time and dose dependence of radiation-induced apoptosis.

Materials and methods : Peripheral blood lymphocytes were isolated from the heparinized venous blood of 11 healthy volunteers, 8 men and 3 women, with each 10 ml of blood being divided into 15 samples. The blood lymphocytes were irradiated using a linear accelerator at a dose rate of 2.4 Gy/min, to deliver doses of 0.5, 1, 2 and 5 Gy. The control samples, and irradiated cells, were maintained in culture medium for 24, 48 and 72 hours following the irradiation. The number of apoptotic cells after the in vitro X-irradiation was measured by flow cytometry after incubation periods of 24, 48 and 72 hours. We also observed the apoptotic cells using a DNA fragmentation assay and electron microscopy.

Results : The rate of spontaneous apoptosis increased in relation to the time interval following irradiation (1.761¡¾0.161, 3.563¡¾0.564, 11.098¡¾2.849, at 24, 48, and 72 hours). The apoptotic cells also increased in the samples irradiated with 0.5, 1, 2 and 5 Gy, in a radiation dose and time interval after irradiation manner, with the apoptosis being too great at 72 hours after irradiation. The dose-response curves were characterized by an initial steep increase in the number of apoptotic cells for irradiation doses below 2 Gy, with a flattening of the curves as the dose approached towards 5 Gy.

Conclusion : The flow cytometric assay technique yielded adequate data, and required less than 1 mL of blood. The time and dose dependence of the radiation-induced apoptosis, was also shown. It is suggested that the adequate time interval required for the evaluation of apoptosis would be 24 to 48 hours after blood sampling.

Å°¿öµå

¸²ÇÁ±¸; ¸»ÃÊÇ÷¾×; ¹æ»ç¼±Á¶»ç; ¾ÆÆ÷ÇÁÅä½Ã½º;Lymphocyte; Blood; Radiation; Apoptosis

¿ø¹® ¹× ¸µÅ©¾Æ¿ô Á¤º¸

   

µîÀçÀú³Î Á¤º¸

KCI
KoreaMed
KAMS