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Adenyl cyclase activity following fluoride ingestion
Toxicology Letters
|February 1, 1982
Summary
Chronic oral sodium fluoride (NaF) intake significantly increased adenyl cyclase activity in rabbit bone, liver, and kidney tissues. Fluoride levels also rose in all tissues, with bone showing the most substantial increase.
Area of Science:
- Biochemistry
- Toxicology
- Pharmacology
Background:
- Adenyl cyclase is a crucial enzyme in cellular signaling pathways.
- Fluoride exposure can impact various physiological processes.
- Understanding fluoride's effects on enzyme activity is important for assessing its toxicity.
Purpose of the Study:
- To investigate the impact of chronic sodium fluoride (NaF) ingestion on adenyl cyclase activity.
- To quantify fluoride accumulation in different rabbit tissues after prolonged exposure.
- To correlate changes in enzyme activity with tissue fluoride levels.
Main Methods:
- Adult rabbits were administered NaF orally at 10 mg/kg body weight daily for 6 months.
- Adenyl cyclase activity was measured in bone, liver, kidney, and skeletal muscle tissues.
- Fluoride content was determined in serum and various tissues.
Main Results:
- Significant increase in adenyl cyclase activity observed in bone, liver, and kidney.
- No significant change in adenyl cyclase activity in skeletal muscle.
- Elevated fluoride levels detected in serum and all investigated tissues.
- Bone tissue exhibited the highest percentage increase in fluoride content, while skeletal muscle showed the lowest.
Conclusions:
- Chronic NaF ingestion modulates adenyl cyclase activity in a tissue-specific manner.
- Bone, liver, and kidney are particularly responsive to fluoride-induced changes in adenyl cyclase.
- Fluoride accumulates differentially across tissues, with bone being a major reservoir.