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ÃéÀå¾Ï Áø´Ü¿¡¼­ Ç÷û p53 ´Ü¹éÁúÀÇ ÀÓ»óÀû À¯¿ë¼º Clinical Significance of Serum p53 Protein in Patients with Pancreatic Carcinoma

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Abstract

¸ñÀû : p53 À¯ÀüÀÚÀÇ º¯ÀÌ´Â ¾Ç¼º Á¾¾ç¿¡¼­ ¹ß°ß
µÇ´Â °¡Àå ÈçÇÑ À¯ÀüÀÚ ÀÌ»óÀ¸·Î ¾Ë·ÁÁ® ÀÖÀ¸³ª Çö
Àç±îÁö ÀÓ»óÀûÀ¸·Î »ç¿ëµÇ´ø p53 À¯ÀüÀÚÀÇ º¯ÀÌ È®
ÀÎ ¹æ¹ýÀ¸·Î¼­ÀÇ À¯ÀüÀÚ ºÐ¼®À̳ª ¸é¿ªÁ¶Á÷È­Çйý
Àº ÃéÀåÁ¾¾ç Á¶Á÷À» ÇÊ¿ä·Î ÇϹǷΠÀÓ»óÀû À¯¿ë¼º
Àº ±ØÈ÷ Á¦ÇÑÀûÀ̾ú´Ù. ±×·¯³ª Á¾¾ç¼¼Æ÷ ³»¿¡ ÃàÀû
µÈ º¯ÀÌ p53 ´Ü¹éÁúÀº Ç÷Áß ³óµµ¸¦ »ó½Â½ÃÄÑ ELISA
¹ýÀ» ÀÌ¿ëÇÏ¿© ÃøÁ¤ÇÒ ¼ö ÀÖ°Ô µÇ¾ú´Ù. ÀÌ¿¡ ÀúÀÚµé
Àº ÃéÀå¾Ï ȯÀÚ¿¡¼­ Ç÷û ³» p53 ´Ü¹éÁú ³óµµ¸¦ Ãø
Á¤ÇÏ´Â °ÍÀÌ Á¾¾çÇ¥ÁöÀڷμ­ÀÇ ÀÓ»óÀû À¯¿ë¼ºÀ» °¡
Áú ¼ö ÀÖ´ÂÁö ¿¬±¸ÇÏ¿´´Ù. ´ë»ó ¹× ¹æ¹ý :¼ö¼ú ÈÄ
Á¶Á÷ÇÐÀûÀ¸·Î È®ÁøµÈ 27 ¸íÀÇ ÃéÀå¾Ï ȯÀÚ¿Í 14 ¸íÀÇ
¸¸¼º ÃéÀå¿° ȯÀÚ, 19 ¸íÀÇ Á¤»ó ´ëÁ¶±ºÀ» ´ë»óÀ¸·Î
ÇÏ¿© Ç÷û p53 ´Ü¹éÁúÀÇ ³óµµ, CEA, CA19-9,±×¸®
°í CA242 ¸¦ ÃøÁ¤ÇÏ¿© p53 ´Ü¹éÁúÀÇ ³óµµ¸¦ ȯÀÚ±º
º°·Î ºñ±³ÇÏ¿´°í, p53 ´Ü¹éÁúÀÇ ³óµµ¿Í ±âÁ¸ÀÇ Á¾¾ç
Ç¥ÁöÀÚµéÀÎ CEA, CA19-9, CA242 ¿ÍÀÇ »ó°ü°ü°è¸¦
Á¶»çÇÏ¿´´Ù. ¶ÇÇÑ Receiver operating curve ¸¦ ÅëÇÏ¿©
p53 ´Ü¹éÁúÀÇ ÃéÀå¾Ï Áø´Ü¿¡ ´ëÇÑ ±âÁØÄ¡ (cut-off
value)¸¦ ±¸ÇÏ¿´À¸¸ç °Ë»çÀÇ ¹Î°¨µµ, ƯÀ̵µ, ¾ç¼º
¿¹ÃøÄ¡ ¹× À½¼º ¿¹ÃøÄ¡¸¦ ±¸ÇÏ¿© °Ë»çÀÇ ÀÓ»óÀû À¯
¿ë¼ºÀ» ÆÇÁ¤ÇÏ¿´´Ù. °á°ú : p53 ´Ü¹éÁú ³óµµ´Â ÃéÀå
¾Ï ȯÀÚ¿¡¼­ 1.53 ¡¾1.74 ng/mL,¸¸¼º ÃéÀå¿° ȯÀÚ¿¡
¼­ 0.18 ¡¾0.11 ng/mL,Á¤»ó ´ëÁ¶±º¿¡¼­ 0.20 ¡¾0.12
ng/mL ·Î, ÃéÀå¾Ï ȯÀÚ¿¡¼­ ¸¸¼º ÃéÀå¿° ȯÀÚ³ª Á¤
»ó ´ëÁ¶±º¿¡ ºñÇÏ¿© ÀÇ¹Ì ÀÖ°Ô ³ô¾Ò´Ù (p=0.001).
p53 ´Ü¹éÁú ³óµµ´Â ÃéÀå¾Ï ȯÀÚ¿¡¼­ ±âÁ¸ÀÇ Á¾¾ç
Ç¥ÁöÀÚÀÎ CEA, CA19-9 ¹× CA242 ¿Í »ó°ü¼ºÀÌ ¾ø¾ú
´Ù (p>0.05).ÃéÀå¾Ï ȯÀÚ¿¡¼­ p53 ´Ü¹éÁúÀÇ Ç÷û ³ó
µµ ÃøÁ¤Àº ±× ¹Î°¨µµ°¡ 85.2%À̾ú°í ƯÀ̵µ´Â
96.9%À̾úÀ¸¸ç ¾ç¼º ¿¹ÃøÄ¡´Â 95.8%À̾ú°í À½¼º
¿¹ÃøÄ¡´Â 88.8%À̾úÀ¸¸ç °Ë»çÀÇ È¿À²Àº 91.7%À̾ú
´Ù. °á·Ð :Ç÷û ³» p53 ´Ü¹éÁú ³óµµ´Â ÃéÀå¾ÏÀÇ Ç÷
û ³» Á¾¾çÇ¥ÁöÀڷμ­ ±âÁ¸ÀÇ Á¾¾çÇ¥ÁöÀÚº¸´Ù ³ôÀº
ƯÀ̵µ¿Í È¿À²À» °¡Áø °Ë»ç·Î¼­ ÃéÀå¾ÏÀÇ Áø´Ü¿¡
À־ ÀÓ»óÀûÀ¸·Î À¯¿ë¼ºÀÌ ÀÖ´Â °Ë»ç·Î È°¿ëÇÒ
¼ö ÀÖÀ½À» ½Ã»çÇÏ¿´´Ù.

Background/Aims: The p53 gene is a tumor suppressor gene and mutation of the p53 gene is the most common genetic alteration found in human malignancies. The accumulation of mutant p53 protein in tumor cells can be released into the extracellular
environment such as the serum and thus, serum concentration of p53 protein can be examined by enzyme linked immunosorbent assay (ELISA). We evaluated the clinical significance of serum p53 protein in patients with pancreatic carcinomas and
examined
especially its usefulness as a tumor marker. Methods: Serum concentration of p53 protein and levels of CEA, CA19-9, CA242 were determined by an ELISA in 27 cases of pancreatic carcinoma , 14 cases of chronic pancreatitis, and 19 cases of normal
controls. Results: The serum concentration of p53 protein in patients with pancreatic carcinoma was significantly higher than in patients with chronic pancreatitis and normal controls (p=0.001). The serum concentration of p53 protein did not
correlate
significantly with the levels of CEA, CA19-9 or CA242. The overall sensitivity of serum p53 protein assay was 85.2% and the specificity was 96.9%. Positive predictive value was 95.8% and negative predictive value was 88.8% in this p53 protein
assay.
Conclusions: Serum concentrations of p53 protein can be clinically used as a tumor marker with high specificity and high efficiency in diagnosing of pancreatic carcinoma.

Å°¿öµå

Serum p53 protein; Pancreatic carcinoma;

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