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Sex- and organ-specific toxicity in normal and malnourished rats fed thermoxidized palm oil
E U Isong1, E U Essien, O U Eka
1Dept of Chemistry and Biochemistry, University of Uyo, PMB 1017, Uyo - AKS, Nigeria. uisong@hotmail.com
Abstract:
The effects of free radical toxicity as induced by chronic consumption of thermoxidized palm oil (TPO) diet on organ size of normal animals, their first filial offspring and malnourished rats, were studied. Tissue- and sex-specific toxicity was revealed. The TPO diet significantly (P<0.01) reduced lung and kidney mass in normal male rats but female rats remained unaffected. Hearts of first filial offspring of both male and female rats were, however, enlarged while lung, liver and kidneys of first filial female offspring were additionally reduced in size (P<0.01). This information suggests that the observed toxicities could be cumulative for female offspring. Malnutrition protected against toxic injury because none of the kwashiorkoric animals rehabilitated on the toxic diet showed any overt symptoms of toxicity.
Insights
Chronic consumption of thermoxidized palm oil (TPO) diet induces organ size changes, with sex-specific effects in rats. Malnutrition offers protection against TPO-induced toxicity.
Area of Science:
- Toxicology
- Nutrition
- Physiology
Background:
- Thermoxidized palm oil (TPO) consumption can induce free radical toxicity.
- Understanding the impact of TPO on organ health is crucial for public health.
Purpose of the Study:
- To investigate the effects of chronic TPO diet on organ size in normal rats, their offspring, and malnourished rats.
- To identify tissue- and sex-specific toxicities induced by TPO.
Main Methods:
- Rats were fed a TPO diet to assess organ size changes.
- Studies included normal rats, their first filial offspring, and malnourished rats.
- Statistical analysis (P<0.01) was used to determine significance.
Main Results:
- TPO diet reduced lung and kidney mass in normal male rats.
- Female rats showed no significant changes in lung or kidney mass.
- First filial offspring exhibited enlarged hearts, while female offspring also had reduced lung, liver, and kidney size.
- Malnourished rats rehabilitated on the TPO diet showed no toxicity symptoms.
Conclusions:
- TPO-induced toxicity exhibits tissue- and sex-specific patterns.
- Observed toxicities in female offspring may be cumulative.
- Malnutrition confers protection against TPO-induced toxic injury.
