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Abstract

°á·Ð
ÀúÀÚ´Â 5·ÊÀÇ Á¤»ó ¹æ±¤Á¶Á÷°ú 74·ÊÀÇ ¹æ±¤¾ÏÀÇ Æ÷¸£¸»¸° °íÁ¤°ú ÆĶóÇÉ Æ÷¸ÅµÈ Á¶Á÷À»
´ë»óÀ¸·Î p53 ´Ü¹é¿¡ ƯÀÌÇÑ ´ÜÀÏŬ·Ð Ç×ü DO7À» ÀÌ¿ëÇÑ ¸é¿ªÁ¶Á÷È­ÇÐÀû °Ë»öÀ» ½ÃÇàÇÏ
¿© p53 À¯ÀüÀÚÀÇ µ¹¿¬º¯ÀÌ°¡ ¹æ±¤¾ÏÀÇ ¹ß»ý°ú º´¸®ÇÐÀû Ư¼º¿¡ ¾î¶°ÇÑ ¿¬°ü°ü°è¸¦ °®´ÂÁö
¸¦ È®ÀÎÇÔÀ¸·Î½á ¹æ±¤¾ÏÀÇ ¹ß»ý°ú ÁøÇà°úÁ¤¿¡ ¹ÌÄ¡´Â ¿ªÇÒÀ» ±Ô¸íÇÏ°íÀÚ ÇÏ¿´À¸¸ç, ȯÀÚµé
ÀÇ ÀÓ»ó°æ°ú¿Í p53 ´Ü¹éÀÇ ¹ßÇö·üÀ» ºñ±³ ºÐ¼®ÇÏ¿© ±âÁ¸ÀÇ ¾Ë·ÁÁø ¿¹ÈÄÀÎÀÚµé°ú ÇÔ²² p53
´Ü¹éÀÇ ¹ßÇöÁ¤µµ°¡ ¹æ±¤¾Ï ȯÀÚ¿¡¼­ ¿¹ÈÄÀÎÀڷμ­ ÀûÀÀµÉ ¼ö ÀÖ´ÂÁö¸¦ °ËÅäÇÏ°íÀÚ ÇÏ¿´´Ù.
º» ÀúÀÚµéÀÇ Àα¸´Â ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. p53 ´ÜÀÏŬ·Ð Ç×üÀÇ ¸é¿ª¹ÝÀÀÀº Ç¥À缺 ¹æ±¤¾È°ú ħÀ±¼º ¹æ±¤¾Ï¿¡¼­, ¶ÇÇÑ Á¾¾çÀÇ ºÐ
È­°¡ ¾çÈ£ÇÑ ±º°ú ºÒ·®ÇÑ ±º¿¡¼­ ¾ç¼ºÀÇ ºóµµ¿Í ¹ßÇöÀ² »çÀÌ¿¡´Â Åë°èÇÐÀû À¯ÀǼºÀº ¾ø¾ú
´Ù. °á·ÐÀûÀ¸·Î ¹æ±¤¾Ï¿¡¼­ p53 À¯ÀüÀÚÀÇ µ¹¿¬º¯ÀÌ´Â Á¾¾çÀÌ »ý¹°ÇÐÀûÀÎ ¾Ç¼ºµµ¸¦ ȹµæÇÏ´Â
µ¥ ÁÖ¿äÀÎÀÚ·Î ÀÛ¿ëÇÏÁö´Â ¾ÊÁö¸¸, Á¤»óÁ¶Á÷¿¡¼­ ¾ÏÁ¶Á÷ÀÇ ¹ß»ý ¹× ÁøÇà °úÁ¡¿¡¼­ Áß¿äÇÑ
ÀÎÀÚ·Î ÀÛ¿ëÇÏ´Â °ÍÀ¸·Î »ý°¢µÈ´Ù.
2. Ç¥À缺 ¹æ±¤¾Ï¿¡¼­ p53 ¹ßÇöÀ²ÀÌ 20% ¹Ì¸¸ÀÎ ±º(0%)¿¡ ºñÇØ 20%ÀÌ»óÀÎ ±ºÀÌ ¾à 3¹è
ÀÌ»ó ³ôÀº Àç¹ß·üÀ» º¸¿´À¸³ª Åë°èÇÐÀû Àǹ̸¦ ºÎ¿©ÇÒ ¼ö´Â ¾ø¾úÀ¸¸ç Kaplan-Meier ºÐ¼®°á
°ú p53 ¹ßÇöÀ²ÀÌ 20%ÀÌ»óÀÎ ±º¿¡¼­ Àç¹ß·üÀÌ ³ô¾ÒÀ¸³ª, Åë°èÇÐÀû À¯ÀǼºÀº ¾ø¾ú´Ù. ¶ÇÇÑ Ä§
À±¼º ¹æ±¤¾Ï¿¡¼­µµ Kaplan-Meier ºÐ¼®°á°ú p53 ¹ßÇöÀ²ÀÌ 20%ÀÌ»óÀÎ ±º¿¡¼­ disease-free
intervalÀÌ ³·¾ÒÀ¸³ª, p53 ¹ßÇöÀ²°ú »ýÁ¸À²»çÀÌ¿¡´Â Åë°èÇÐÀû À¯ÀǼºÀº ¾ø¾ú´Ù(p>0.05).
°á·ÐÀûÀ¸·Î ¹æ±¤¾Ï¿¡¼­ p53À¯ÀüÀÚÀÇ µ¹¿¬º¯ÀÌ´Â Á¾¾çÀÇ ¹ß»ý´Ü°è, ¼ºÀå°ú ÁøÇà°úÁ¤¿¡¼­
¿ªÇÒÀ» ¼öÇàÇϳª prognostic indicator·ÎÀÇ »ç¿ë¿¡´Â ¹®Á¦Á¡ÀÌ ÀÖ´Ù ÇÏ°ÚÀ¸¸ç, ÇâÈÄ p53¿¡ ´ë
ÇÑ ¸é¿ªÁ¶Á÷È­ÇÐÀû ¿¬±¸¿Í ÇÔ²² ºÐÀÚ»ý¹°ÇÐÀûÀÎ À¯ÀüÀںм®À» ½ÃÇàÇϸç p53 À¯ÀüÀÚÀÇ µ¹¿¬
º¯ÀÌ¿Í ¹æ±¤¾ÏÀÇ ÁøÇà ±âÀü°£ÀÇ °ü°è¿¡ ´ëÇÏ¿© º¸´Ù ¸íÈ®ÇÑ ±Ô¸íÀÌ ÇÊ¿äÇÒ °ÍÀ¸·Î »ç·áµÇ
¸ç, ³ª¾Æ°¡¼­ ¹æ±¤¾Ï ȯÀÚÀÇ Ä¡·á¹æ¹ýÀÇ ¼±Åà ¹× ¿¹ÈÄÃøÁ¤ µî ÀÏ»óÀûÀÎ ÀÇÀÇ¿¡ °üÇÑ ÀüÇâÀû
ÀÎ ¿¬±¸µµ °è¼ÓµÇ¾î¾ß ÇÒ °ÍÀÌ´Ù.
#ÃÊ·Ï#
To evaluate the prevalence of p53 gene expression and its role as a prognostic
indicator in bladder carcinoma, we examined the paraffin-embedded tissue specimens
from 43 patients with superficial and 31 patients with invasive bladder cancers. Nuclear
expression of p53 proteins was detected by immunohistochemical analysis with
microwave retrieve method, using the monoclonal antibody DO7 (Novocastra, UK). The
p53 gene expression were divided into 4 categories (category 1: negative, category 2:
<20%, focal, category 3: >20%, diffuse, heterogeneous, weak intensity, category 4 >20%,
diffuse, homogeneous, strong intensity). In total 74 cases, 67 (90.5%) showed positive
(category 3 and 4) nuclear staining. Difference of nuclei, expression between superficial
and invasive cancer was not seen (96%, 84% respectively). But category 4 was more
frequently seen in cases with invasive carcinoma compared to in superficial cancers
(65% vs. 35%), and it was highly found in cases with grade 3 than grade 1 and 2 (79%
vs. 27.5%) (p<0.005). Recurrence, progression, and survival in patients with superficial
and invasive carcinoma between negative and weak intensity group (category 1,2,3) and
strong intensity group (category 4) were not statistically significant. Our results showed
higher positive rates than other studies may be due to using microwave retrieve method.
These suggest that most bladder tumors have p53 mutations not only invasive but also
superficial tumors and immunohistochemical stain using microwave retrieve method of
bladder tumor specimens could be A good screening method for the presence of mutant
p53 protein. The nuclear expression of p53 protein showed the trend of a stronger
intensity in patients with invasive tumors and high histologic grade than in patients
with superficial tumors and low histologic grade. These results also suggest that the
degree of mutant p53 expression may be more useful for aggressive biological natures
than the presence of mutant p53 protein.

Å°¿öµå

Bladder tumor; p53; Microwave retrieve method;

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