Comparative Evaluation of Diabetes Complication Using Liver Function Parameters as Indices between Male and Female Alloxan Induced Diabetic Rats

Abstract

It is known that diabetes causes liver damage. On the other hand, because most cases of liver damage have been investigated in males, examining the relationship of this disease in both sexes is of great importance. This study was aimed at, comparatively evaluating diabetic complications using histopathological examination and liver function parameters as indices in alloxan-induced diabetic rats. A total of 24 male and female rats divided into four groups of six animals each were used for the experiment. Group A were female control, Group B were male control while group C and D were alloxan induced diabetic female and male rats respectively. Groups A and B were non diabetic rats fed with rat diet all through the experiment. Group C and D were diabetes induced with a single intraperitoneal injection of alloxan (120mg/kg). At the end of the inducement period, the rats were fasted overnight and sacrificed. Blood was collected by ocular puncture for the determination of fasting plasma glucose (FPG) and serum levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), total bilirubin (TB), direct bilirubin (DB), total protein (TP) and albumin (ALB) using spectrophotometric method. Histology of the liver was determined by H and E technique. The results showed the experimental group C (365.83±43.6mg/dl) and D (368.94±43.93mg/dl) had significantly elevated levels of FPG when compared with the controls group A (116.00±9.11mg/dl) and B (108.33±5.5mg/dl) confirming the induction of diabetes (P=0.000). The liver of both male and female diabetic rats showed ballooning degeneration. In the males, these were arranged in normal sheets and cord around central vein in some areas of the center, on the other hand, the central vein of the female diabetic rats appears slightly enlarged containing blood clots and the arrangement of the hepatocytes in sheets or cords around the central vein was completely distorted. There was no significant difference (p>0.05) in the mean serum levels of ALP, AST, ALT, DB, TP and ALB in female diabetics when compared to male diabetic rats. The mean serum level of TB was significantly reduced (p=0.004) in female diabetics (0.53±0.05) than in the male diabetic albino rats (0.69±0.09). This study showed the liver histology and function are variably altered in diabetes mellitus. Further research on the causes of liver damage will help us to unravel the pathogenesis of diabetes and its complications.