Serum isoamylases in liver diseases

Area of Science:

• Biochemistry
• Clinical Chemistry
• Gastroenterology

Background:

• Serum amylase is a key enzyme in carbohydrate digestion.
• Isoamylase analysis can provide insights into pancreatic and salivary gland function.
• Liver disease can potentially affect serum enzyme levels and activities.

Purpose of the Study:

• To investigate total serum amylase and isoamylase activities in patients with liver disease.
• To compare enzyme profiles between normal volunteers and patients with liver disease.
• To identify potential alterations in amylase isoenzyme patterns associated with liver pathology.

Main Methods:

• Serum samples were collected from 30 normal volunteers and 30 patients with liver disease.
• Total serum amylase and isoamylase activities were measured.
• Isoenzyme analysis was performed using inhibitor assays and electrophoretic techniques.

Main Results:

• Six out of 30 patients exhibited total serum amylase activity above the normal range (mean +/- 2 SD).
• Pancreatic isoamylase was the predominant isoenzyme in most liver disease patients.
• Patients with alcoholic cirrhosis showed a different isoamylase profile compared to other liver disease patients.

Conclusions:

• Serum amylase levels can be elevated in some patients with liver disease.
• Pancreatic isoamylase is typically the dominant isoenzyme, but alcoholic cirrhosis presents an exception.
• Electrophoretic analysis did not reveal other isoenzyme types or age-dependent distributions.