Poly (C) avid ribonuclease estimation in patients with solid tumors. A critical evaluation

Area of Science:

• Biochemistry
• Oncology
• Clinical Diagnostics

Background:

• Poly (C) avid ribonuclease activity may serve as a biomarker for malignancy.
• Previous research has explored enzyme levels in various cancer types.

Purpose of the Study:

• To investigate the activity of Poly (C) avid ribonuclease in patients with different types of carcinomas.
• To compare ribonuclease activity in cancer patients with that of normal subjects across different age groups.

Main Methods:

• Sera from 129 patients with histologically verified carcinomas were analyzed.
• Enzyme activity was compared to normal subjects using the Mann-Whitney U-test, stratified by age and carcinoma type.

Main Results:

• Statistically significant elevation in ribonuclease activity was found in patients with ovarian and bronchus carcinomas across all age groups.
• Elevated activity was observed in most colon carcinoma cases, but was inconsistent in pancreatic carcinoma.
• No significant elevation was detected in stomach or prostate carcinoma patients.

Conclusions:

• Certain carcinomas, such as ovarian and bronchus, are associated with elevated ribonuclease activity.
• Ribonuclease elevation is not a specific or sensitive marker for pancreatic carcinoma detection.
• The clinical utility of ribonuclease estimation for prospective cancer detection remains questionable due to lack of specificity.