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Role of Beta-Carotene on the Histological Features of Neonatal Albino Rat Cardiocytes Treated with Monosodium Glutamate
Faculty
Not Specified
Year:
2010
Type of Publication:
Article
Pages:
23-28
Authors:
Zaki, Mohamed Samir Ahmed
Journal:
BIOMEDICAL RESEARCH-INDIA SCIENTIFIC PUBLISHERS INDIA
Volume:
21
Research Area:
Engineering; Research \& Experimental Medicine
ISSN
ISI:000208604100004
Keywords :
Beta-carotene, Monosodium Glutamate, Histology of cardiocytes, Neonatal Albino Rats
Abstract:
The objective of this study was to analyze the cardiac effects of exposure to monosodium glutamate for a period of 7 days alone and in combination with beta-carotene supplementation. Rats were allocated into: control (I), experimental group (II) exposed to 4 mg of monosodium glutamate for 7 days and experimental group (III) exposed to monosodium glutamate and 300 mg/kg/diet beta-carotene for 7 days. After three days of randomization, cardiac structure was assessed by electron microscopy. The myocardial cells after exposure to monosodium glutamate illustrated branching cytoplasmic network of cardiac muscle with cross striations which are retracted around the nuclei. These nuclei showed dense and electron dense heterochromatin that associated with nuclear covering and dense chromatin distributed in the nucleoplasm. Delicate supportive tissue filling the intercellular spaces containing blood was also seen. Ultrastructurally, vacuolation of the mitochondria with fragmentation of its cristae with loss of its striations were observed. The myofibrils were dissociated with irregularities of its sarcomere. Empty spaces in the cytoplasm with disrupted intercalated disc were observed. In beta-carotene plus monosodium glutamate, most fibers showed normal morphological aspects. In conclusion: One week monosodium glutamate exposure induces morphological cardiac alterations and beta-carotene supplementation attenuates this ventricular remodeling process.
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