Biochemical changes elicited by isosaline leaf and stem-bark extracts of Harungana madagascariensis in the rat

• Published in: Phytotherapy research 2004-07, Vol.18 (7), p.588-591
• Main Authors: Olagunju, J.A, Ogunfeibo, A.B, Ogunbosi, A.O, Taiwo, O.A
• Format: Article
• Language: English
• Subjects: Alanine Transaminase - blood; Alanine Transaminase - drug effects; Animals; Aspartate Aminotransferases - blood; Aspartate Aminotransferases - drug effects; bark; bioactive properties; biochemical changes; Biological and medical sciences; Blood Glucose - drug effects; Cholesterol - blood; Clusiaceae; Female; General pharmacology; Harungana madagascariensis; Harungana madagascariensis (Hypericaceae); hyperpyruvicaemia; hypertriglyceridaemia; Injections, Intraperitoneal; Kidney - drug effects; Kidney - enzymology; Lactic Acid - blood; lactic acidaemia; leaves; Liver - drug effects; Liver - enzymology; Male; Medical sciences; medicinal plants; Pharmacognosy. Homeopathy. Health food; Pharmacology. Drug treatments; Plant Bark; plant extracts; Plant Extracts - administration & dosage; Plant Extracts - pharmacology; Plant Extracts - therapeutic use; Plant Leaves; Pyruvic Acid - blood; Rats; Rats, Sprague-Dawley; stems; Triglycerides - blood; Urea - blood
• ISSN: 0951-418X; 1099-1573
• DOI: 10.1002/ptr.978

Isosaline leaf and stem‐bark extracts of Harungana madagascariensis (L) administered intraperitoneally into healthy albino rats of the Sprague‐Dawley strain at a dose of 400 mg/kg body weight resulted in a significant elevation of liver, kidney and serum alanine and aspartate aminotransferase activities. Serum urea, total proteins, total triglyceride, cholesterol, pyruvate and lactate were also significantly elevated in the treated rats. While the stem‐bark extract significantly increased the blood glucose level, the leaf extract significantly lowered it. However, both extracts significantly reduced supernatant protein concentrations of the liver and kidney. The significant increase in aminotransferase activities and the concomitant reduction in protein concentrations of the liver and kidney suggests increased catabolism of proteins in these organs, while the catabolites produced are probably channelled to other metabolic pathways resulting in the observed hyperpyruvicaemia, hypertriglyceridaemia and lactic acidaemia in the treated animals. The increased serum cholesterol also suggests a probable degenerative change that these extracts may have on membranes. The results obtained clearly indicate that these extracts alter metabolic activities in both the liver and kidney of treated rats and hence, should be employed in herbal preparations with caution. Copyright © 2004 John Wiley & Sons, Ltd.