ºîÀ®¡§ 2001/02/19 ĹëÀî¡¡Çî
¥Ç¡¼¥¿Èֹ桡¡¡¡¡¡§020207
¥¥¤¥í¥·¥ç¥¦¥¸¥ç¥¦¥Ð¥¨¤Ë¤ª¤±¤ëÊü¼ÍÀþ¤Ë¤è¤êͶȯ¤µ¤ì¤¿°äÅÁŪ»½ý¤ËÂФ¹¤ëÄã²¹¸ú²Ì
ÌÜŪ¡¡¡¡¡¡¡¡¡¡¡¡¡§¥¥¤¥í¥·¥ç¥¦¥¸¥ç¥¦¥Ð¥¨¤òÍѤ¤¤¿Êü¼ÍÀþ¾ã³²¤ÎÄ´ºº
Êü¼ÍÀþ¤Î¼ïÊÌ¡¡¡¡¡§¥¨¥Ã¥¯¥¹Àþ
Êü¼ÍÀþ¸»¡¡¡¡¡¡¡¡¡§¥Õ¥£¥ê¥Ã¥×¥¹¼ÒÀ½XÀþ¾È¼ÍÁõÃÖ(250kV, 10mA, Al ¥Õ¥£¥ë¥¿¡¼¤ò»ÈÍÑ)
ÀþÎÌ¡ÊΨ¡Ë¡¡¡¡¡¡¡§10, 20, 30Gy
ÍøÍÑ»ÜÀß̾¡¡¡¡¡¡¡§µºÜ¤Ê¤·
¾È¼Í¾ò·ï¡¡¡¡¡¡¡¡¡§¶õµ¤Ãæ
±þÍÑʬÌî¡¡¡¡¡¡¡¡¡§Êü¼ÍÀþ¾ã³²¸¦µæ
³µÍס¡¡¡¡¡¡¡¡¡¡¡¡§
¡¡¥¥¤¥í¥·¥ç¥¦¥¸¥ç¥¦¥Ð¥¨¤ÎÀº»Ò¤È¸å´üÀº¸¶ºÙ˦¤ËXÀþ¤ò¾È¼Í¤·¤Æ¡¢Êü¼ÍÀþ¾ã³²¤ËµÚ¤Ü¤¹²¹Å٤θú²Ì¤òÄ´¤Ù¤¿¡£È¼ÀÎôÀÃ׻ࡢžºÂ¤ª¤è¤ÓÍ¥ÀÃ×»à¤Ë¤Ä¤¤¤Æ¸¡Æ¤¤·¤¿¤È¤³¤í¡¢¤¤¤º¤ì¤Î»Øɸ¤âÄã²¹¾È¼Í¤ÎÊý¤¬¾ã³²¤¬Â礤¯¤Ê¤Ã¤¿¡£2¼ïÎà¤ÎºÙ˦´Ö¤Ë²¹ÅÙ¸ú²Ì¤ËÂФ¹¤ëÈ¿±þ¤Îº¹°Û¤ÏÀ¸¤¸¤Ê¤«¤Ã¤¿¡£
¾ÜºÙÀâÌÀ¡¡¡¡¡¡¡¡¡§
¡¡
¡¡À¸Êª¤ËÂФ¹¤ëÊü¼ÍÀþ¾È¼Í¸ú²Ì¤Ë²¹ÅÙ¸ú²Ì¤¬Â¸ºß¤¹¤ë¤³¤È¤Ï¸¦µæ¤Î¤´¤¯½é´ü¤«¤éÃΤé¤ì¤Æ¤¤¤ë¤¬¡¢¤½¤Î¸ú²Ì¤Ë¤Ä¤¤¤Æ¤Ï¾ã³²¤ÎÁýÉý¡¢¸º¾¯¤È¤¤¤¦ÁêÈ¿¤¹¤ë¥Ç¡¼¥¿¤¬ÆÀ¤é¤ì¤Æ¤¤¤ë¤Ê¤É¡¢º£Æü¤Þ¤ÇÄêÀâ¤Ï¤Ê¤¤¡£¤³¤ÎÍýͳ¤Î°ìÉô¤ÏÂå¼Õµ¡Ç½¤äÊü¼ÍÀþ´¶¼õÀ¤¬°Û¤Ê¤ë¿ºÙ˦¤Î¸ÄÂΤ˾ȼͤò¹Ô¤Ã¤¿¼Â¸³¤¬¹Ô¤ï¤ì¤Æ¤¤¿¤¿¤á¤È»×¤ï¤ì¤ë¡£¤½¤³¤ÇËÜÊó¹ð¤Ç¤Ï¥¥¤¥í¥·¥ç¥¦¥¸¥ç¥¦¥Ð¥¨¤ÎÀº»Ò¤È¸å´üÀº¸¶ºÙ˦¤ËÃíÌܤ·¤Æ¡¢Î¾ºÙ˦¤Î°äÅÁŪ»½ý¤È¤½¤ì¤ËµÚ¤Ü¤¹²¹ÅÙ¸ú²Ì(¾È¼Í²¹ÅÙ¡¢¾È¼Í¸å¤Î²¹ÅÙ)¤Ë¤Ä¤¤¤ÆÄ´¤Ù¤¿¡£Àº»Ò¤Ø¤Î¾È¼Í¸ú²Ì¤Ï±©²½7ÆüÌܤÎͺ¤ËXÀþ¤ò¾È¼Í¤·¤Æ¡¢Ä¾¤Á¤Ë»ó¤È¸òÇÛ¤¹¤ë¤³¤È¤Ë¤è¤êɾ²Á¤·¤¿¡£¾È¼Í»þ¤ª¤è¤Ó¾È¼Í¸å¤Î²¹Å٤Ȥ·¤Æ¹â²¹(24¡î)¤ÈÄã²¹(0¡î)¤Î2Ãʳ¬¤òÀßÄꤷ¤¿¡£¸òÇÛ¤·¤¿Íº¤ò¤µ¤é¤ËÂè1²óÌܤθòÇÛ¤ò¹Ô¤Ã¤¿24»þ´Ö¸å¤ËÂè2²óÌܤθòÇۤȤ·¤Æ½è½÷»ó¤È¸òÇÛ¤µ¤»¡¢Àº¸¶ºÙ˦¤Ø¤Î¾È¼Í¸ú²Ì¤Îɾ²Á¤ÎºàÎÁ¤È¤·¤¿¡£¤Þ¤¿¡¢±©²½2ÆüÌܤÎͺ¤Ë¾È¼Í¤·¡¢¤¿¤À¤Á¤Ë»ó¤È¸òÇÛ¤·¤¿¾ì¹ç¤âÀº¸¶ºÙ˦¤Ø¤Î¾È¼Í¸ú²Ì¤È¤·¤Æɾ²Á¤¹¤ë¤³¤È¤¬¤Ç¤¤¿(¼ã¤¤Íº¤ÇÀº»Ò¤¬¤Þ¤À·ÁÀ®¤µ¤ì¤Æ¤¤¤Ê¤¤¤¿¤á)¡£3¤Ä¤ÎÊü¼ÍÀþ¾ã³²¤Î»Øɸ¤Î¤¦¤Á¡¢È¼ÀÎôÀÃ×»à¤ÈÀ÷¿§Âΰ۾ï¤ÏÕÛ²½¸ÄÂΤˤĤ¤¤ÆÄ´ºº¤·¤¿¡£
¡¡
¡¡È¼ÀÎôÀÃ×»àΨ¤Ë¤Ä¤¤¤ÆÄ´¤Ù¤¿¤È¤³¤í(ɽ1)¡¢Àº»Ò¤Ë¾È¼Í¤·¤¿Êý¤¬Àº¸¶ºÙ˦¾È¼Í¤è¤êÃ×»àΨ¤Ï¹â¤¯¤Ê¤Ã¤¿¤¬¡¢²¹ÅÙ¤ËÂФ¹¤ëÈ¿±þ¤Ë´Ø¤·¤ÆºÙ˦¤Î¼ïÎà¤Ë¤è¤ëº¹°Û¤Ïǧ¤á¤é¤ì¤Ê¤«¤Ã¤¿¡£¾È¼Í»þ¤Î²¹ÅÙ¸ú²Ì¤ÏÀþÎ̤˰͸¤¹¤ë¤³¤È¤¬Ç§¤á¤é¤ì¤¿¡£¤¹¤Ê¤ï¤ÁÄãÀþÎ̾ȼÍ(10Gy)¤Ç¤Ï¾È¼Í»þ¤Î²¹ÅÙ¸ú²Ì¤Ï¤ß¤é¤ì¤Ê¤«¤Ã¤¿¤¬¡¢¹âÀþÎ̾ȼͤǤÏ(20Gy)¤Ç¤ÏÄã²¹¤Ç¾È¼Í¤¹¤ëÊý¤¬Ã×»àΨ¤¬¹â¤¯¤Ê¤Ã¤¿¡£²¹ÅÙ¸ú²Ì¤ËÂФ¹¤ëÀþÎ̤ÎïçÃͤ¬¤¢¤ë¤È¹Í¤¨¤é¤ì¤ë¡£Äã²¹¤ÇÃ×»àΨ¤¬¹â¤¯¤Ê¤ë¤³¤È¤Ï¡¢¾È¼Íͺ¤ò»ó¤ÈƱ°ìÍÆ´ï¤ËÆþ¤ì¤Æ¸òÇÛ¤µ¤»¤ë¤Î¤Ç¤Ï¤Ê¤¯¡¢¾È¼Íͺ¤ÎÀº»Ò¤ò»ó¤ËÃíÆþ¤·¤Æ¶¯À©Åª¤Ë¼õÀº¤µ¤»¤ë¾ì¹ç¤Ë¤â¤ß¤é¤ì¤¿¡£¾È¼Í»þ¤È¾È¼Í¸å¤Î²¹ÅÙ¤òÊѲ½¤µ¤»¤¿¾ì¹ç¤Ï¡¢¹â²¹¢ªÄã²¹¤Î¾ì¹ç¤ÏÃ×»àΨ¤¬¼ã´³¾å¾º¤·¡¢Äã²¹¢ª¹â²¹¤Î¾ì¹ç¤ÏÃ×»àΨ¤¬Äã²¼¤¹¤ë¤³¤È¤¬Ç§¤á¤é¤ì¤¿¡£
ɽ1¡¡ Sex-linked recessive lethals recovered after exposure to X-rays at 24¡î and at 0¡î¡Ê¸¶ÏÀʸ1¤è¤ê°úÍÑ¡£¡¡Reprinted from Mutation Research, Vol 268,1992 Beatriz Mazar Barnett, Effect of low temperature on radiation-induced genetic damage in Drosophila melanogaster: response of motile sperm and late spermatids.,p.183-190 (1992), with permission from Elsevier Science.¡Ë
-----------------------------------------------------------------------------------------------
Cell stage Lethals/Tests(%)
-------------------------------------------------------------------------
10Gy 20Gy
------------------------------------ -----------------------------------
24¡î 0¡î 24¡î 0¡î
-----------------------------------------------------------------------------------------------
Motile sperm (a)78/2999 2.60 (a)64/2565 2.49 (a)209/4705* 4.44 (a)214/3269* 6.55
(b)74/2943 2.51 (b)45/1708 2.63
Total 152/5942 2.56 109/4273 2.55
Late spermatids (c)66/4136 1.59 (c)65/2657 2.44 (c)159/4459* 3.57 (c)208/323* 6.43
(d)24/1571 1.52 (d)28/1140 2.46
Total 90/5707 1.57 93/3797 2.45
Motile sperm in
inseminated females 104/4079* 2.54 100/2349* 4.26
-----------------------------------------------------------------------------------------------
(a) First mating period; (b) one obsered mating;(c) second mating period;(d)2-h-old males.
* 3 experiments pooled.
0¡î vs. 24¡î; Late spermatids P¡ã0.02 (20 Gy).
Motile sperm P¡ã0.001(20 Gy).
Motile sperm in inseminated females P¡ã0.001.
¡¡Å¾ºÂ¤òͶȯ¤¹¤ë¤¿¤á¤Ë¤Ï20¡Á30Gy¤ò¾È¼Í¤·¤¿¡£Å¾ºÂ¤ÎÉÑÅÙ¤ÏÀº»Ò¾È¼Í¡¢Àº¸¶ºÙ˦¾È¼Í¤È¤âÄã²¹¤Ç¾È¼Í¤·¤¿Êý¤¬¹â¤¯¤Ê¤Ã¤¿(ɽ2)¡£¤³¤È¤ËÀº¸¶ºÙ˦¾È¼Í¤Î¾ì¹ç¤ËÌÀÎƤʸú²Ì¤¬¤ß¤é¤ì¡¢Å¾ºÂÉÑÅÙ¤Ï1.7¡Á1.9Çܹ⤯¤Ê¤Ã¤¿¡£20Gy¤ÎÀþÎ̤ò30ʬ´Ö¤Î´Ö³Ö¤ò¤¢¤±¤Æ10Gy¤º¤Ä¤Ëʬ³ä¤·¤Æ¹Ô¤Ã¤¿¾ì¹ç¤Î¾È¼Í²¹ÅÙ¤ÈÃæÃÇ»þ¤Î²¹ÅÙ¤ÎÁȹ礻¸ú²Ì¤Ë¤Ä¤¤¤Æ¤â¸¡Æ¤¤·¤¿¤¬¡¢Äã²¹¾È¼Í¡¢¹â²¹¾È¼Í¤È¤âÃæÃÇ»þ¤Î²¹ÅÙ¤¬Å¾ºÂ¤ÎÉÑÅ٤˱ƶÁ¤òµÚ¤Ü¤¹¤³¤È¤Ï¤Ê¤«¤Ã¤¿¡£¤Þ¤¿¡¢Ê¬³ä¾È¼Í¤Î¸ú²Ì¤âǧ¤á¤é¤ì¤Ê¤«¤Ã¤¿¡£¤µ¤é¤ËȼÀÎôÀÃ×»àΨ¤ÎÄ´ºº»þ¤ÈƱÍͤ˾ȼ͸å¤Î²¹Å٤θú²Ì¤Ë¤Ä¤¤¤Æ¤â¸¡Æ¤¤·¤¿¤¬¡¢Í°Õ¤Êº¹°Û¤ò¸¡½Ð¤¹¤ë¤Ë¤Ï»ê¤é¤Ê¤«¤Ã¤¿¡£
ɽ2¡¡ ¶-· translocations recovered after exposure of males to X-rays at 0¡î and at 24¡î¡Ê¸¶ÏÀʸ1¤è¤ê°úÍÑ¡£¡¡Reprinted from Mutation Research, Vol 268,1992 Beatriz Mazar Barnett, Effect of low temperature on radiation-induced genetic damage in Drosophila melanogaster: response of motile sperm and late spermatids.,p.183-190 (1992), with permission from Elsevier Science.¡Ë
---------------------------------------------------------------------------------------------
Cell stage Translocations/Tests(%)
-------------------------------------------------------------------
20Gya 30Gy
------------------------------- ---------------------------------
24¡î 0¡î 24¡î 0¡î
---------------------------------------------------------------------------------------------
Motile sperm
(first mating period) 215/5014 4.29 269/4094 6.57 71/883 8.04 109/896 12.17
Late spermatids
(second mating period) 145/5319 2.73 222/4918 4.51 39/755 5.16 151/1544 9.78
---------------------------------------------------------------------------------------------
a Three experiments pooled.
0¡îvs.24¡î:Motile sperm P<0.001(20Gy);P<0.01(30Gy).
Late spermatids P¤¯0.001(20Gy);P¤¯0.001(30Gy).
¡¡Í¥ÀÃ×»àΨ¤ÏÁíÍñ¿ô¤ËÂФ¹¤ëÈóÕÛ²½Íñ¤Î½Ð¸½Î¨¤Çɾ²Á¤·¤¿(ɽ3)¡£Àº»Ò¾È¼Í¤ÈÀº¸¶ºÙ˦¾È¼Í¤È¤â¤ËÄã²¹¾È¼Í¶è¤ÎÊý¤¬¹â²¹¾È¼Í¶è¤è¤êÈóÕÛ²½Íñ¤Î½Ð¸½Î¨¤¬Í°Õ¤Ë¹â¤¯¡¢¤¤¤º¤ì¤Î¾È¼Í¶è¤Ë¤ª¤¤¤Æ¤âÌó1.5Çܤ˾徺¤¹¤ë¤³¤È¤¬Ç§¤á¤é¤ì¤¿¡£
ɽ3¡¡ Dominant lethals recovered after exposure to X-rays (20Gy) at 0¡î and 24¡î¡Ê¸¶ÏÀʸ1¤è¤ê°úÍÑ¡£¡¡Reprinted from Mutation Research, Vol 268,1992 Beatriz Mazar Barnett, Effect of low temperature on radiation-induced genetic damage in Drosophila melanogaster: response of motile sperm and late spermatids.,p.183-190 (1992), with permission from Elsevier Science.¡Ë
------------------------------------------------------------------------------------------
Cell stage Unhatched eggs /Total eggs(%)
-----------------------------------------------------------
Control 24¡îa 0¡îa
------------------------------------------------------------------------------------------
Motile sperm 73/1032 7.07 705/1454 44.56* 506/ 742 65.76*
(one obsewed mating) 179/1644 10.89 678/1519 37.86* 658/1082 56.02
Late spermatids
(second mating period) 35/ 578 6.57 501/1414 30.88* 269/ 497 50.89
(2¡¾h-old males) 118/1040 11.35 519/1398 29.07** 408/ 856 40.97
------------------------------------------------------------------------------------------
a%corrected.
24¡î vs. 0¡î:*P<001;**P¤¯0.05.
¡¡°Ê¾å¤Î·ë²Ì¤«¤é¡¢Äã²¹¤ÏÊü¼ÍÀþ¾È¼Í¸ú²Ì¤ÎÊѹ¹Í×°ø¤Ç¤¢¤ê¡¢Êü¼ÍÀþ¾ã³²¤òÁýÂ礹¤ë¤³¤È¤¬³Î¤«¤á¤é¤ì¤¿¡£
¥³¥á¥ó¥È¡¡¡¡¡¡¡¡¡§
¡¡Æä˿·¤·¤¤Ãθ«¤Ï¤Ê¤¯¡¢ºÇ¶á¤Î¼Â¸³¾ò·ï¤Ç¸¦µæ½é´ü¤Î¥Ç¡¼¥¿¤Î¿®ÍêÀ¤ò³Îǧ¤·¤Æ¤¤¤ëÊó¹ð¤Ç¤¢¤ë¡£
¸¶ÏÀʸ£± Data source 1¡§
Effect of low temperature on radiation-induced genetic damage in Drosophila melanogaster: response of motile sperm and late spermatids.
Beatriz Mazar Barnett
Departamento de Radiobiologia, Comision Nacional de Energia Atomica, Buenos Aires (Argentina)
Mutaion Research¡¡268: 183-190 (1992)
¥¡¼¥ï¡¼¥É¡§XÀþ¡¢¥¥¤¥í¥·¥ç¥¦¥¸¥ç¥¦¥Ð¥¨¡¢Àº»Ò¡¢Àº¸¶ºÙ˦¡¢°äÅÁŪ»½ý¡¢È¼ÀÎôÀÃ׻ࡢžºÂ¡¢Í¥ÀÃ׻ࡢÄã²¹¸ú²Ì¡¢Ê¬³ä¾È¼Í
X-ray, Drosophila melanogaster, sperm, spermatid, genetic damage, sex-linked recessive lethal, translocation, dominant lethal, low temperature effect, fractionated irradiation
ʬÎॳ¡¼¥É¡§020502, 030601, 030602