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Karaciğer metastazlı kolorektal kanser olgularında adenozin deaminaz ve 5' nükleotidaz aktiviteleri

5' nucleotidase and adenosine deaminase activities in colorectal cancer cases metastatic tothe liver

  1. Tez No: 102889
  2. Yazar: YURDAL YÜKSEK
  3. Danışmanlar: DOÇ.DR. M. KAAN KARAYALÇIN
  4. Tez Türü: Tıpta Uzmanlık
  5. Konular: Genel Cerrahi, Onkoloji, General Surgery, Oncology
  6. Anahtar Kelimeler: Belirtilmemiş.
  7. Yıl: 2001
  8. Dil: Türkçe
  9. Üniversite: Ankara Üniversitesi
  10. Enstitü: Tıp Fakültesi
  11. Ana Bilim Dalı: Genel Cerrahi Ana Bilim Dalı
  12. Bilim Dalı: Belirtilmemiş.
  13. Sayfa Sayısı: Belirtilmemiş.

Özet

SUMMARY In this study changes in enzymatic activity of purin and pirimidine metabolism in livers of colorectal cancer metastasis were searched and clinical correlation were investigated. Between July 2000 and may 2001 9 cases; 6 female, 3 male, age range 30-60, of colorectal cancer either operated or not and radiologically determined resectable liver metastasis were included in the study. ADA and 5 NT enzyme activities were analyzed both in metastatic and normal portions of the liver and serum samples and also these enzyme activities were analyzed in healthy cases serums. Normal liver tissue ADA and 5 NT activities were more pronounced compared to metastatic liver tissue. These differences were not found to be statistically significant. Serum ADA and 5 NT enzyme activities were more pronounced in healthy individuals compared to metastatic cases and this reached statistical significance (p<0.05). The difference of serum and tissue enzyme activities of ADA and 5 NT in tumorous and nontumorous cases may be due to usage of a different metabolic pathway in metastatic cases. As a result of low levels of ADA enzyme activity in tumorous tissue, ADA enzyme may be regarded as a catabolic one, and rearrangement of ADA activity in tumorous tissue may prevent the degradation pathway of adenosine. Ill TT.C. YÛKSEKÖCfci.'i'Ü* imj^o t&

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