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Hypocalcemic induced increase in creatine kinase in rats
T Ishikawa1, M Kanayama, T Oba
1Department of Pediatrics, Nagoya City University Medical School, Nagoya, Japan.
Pediatric Neurology
|May 20, 1998
Summary
This study developed a rat model for hypocalcemic myopathy. Dietary calcium and vitamin D deficiency increased plasma creatine kinase (CK), mimicking human muscle disease symptoms.
Area of Science:
- Biochemistry
- Animal Models
- Muscle Physiology
Background:
- Calcium is crucial for muscle function.
- Myopathies are muscle diseases with diverse causes.
- Hypocalcemia, or low calcium levels, can affect muscle health.
Purpose of the Study:
- To establish and characterize an animal model for hypocalcemic myopathy.
- To investigate the relationship between hypocalcemia and elevated plasma creatine kinase (CK).
- To provide insights into human hypocalcemic myopathy.
Main Methods:
- Male Wistar rats were fed a control or calcium/vitamin D3-deficient diet for up to 5-6 weeks.
- Plasma CK and calcium levels were measured.
- Dietary intervention and vitamin D treatment were used for recovery studies.
Main Results:
- Dietary deficiency of calcium and vitamin D3 led to marked hypocalcemia and significantly increased plasma CK levels in rats.
- Increased plasma CK was observed as early as 1-2 weeks of deficiency.
- Rats recovered to normal levels after 1 week of re-alimentation and vitamin D3 treatment.
Conclusions:
- A rat model effectively mimics key features of hypocalcemic myopathy.
- This model demonstrates a direct link between hypocalcemia and elevated CK.
- The model is valuable for studying the pathophysiology and potential treatments for human hypocalcemic myopathy.