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Calcium homeostasis in untreated pulmonary tuberculosis. I--Basic study.
A A Hafiez1, M A Abdel-Hafez, D Salem
1Biochemistry Department, Cairo University, Faculty of Medicine, Egypt.
Kekkaku : [Tuberculosis]
|May 1, 1990
Summary
This study reveals altered mineral and hormone levels in tuberculosis (TB) patients, noting reduced serum calcium and parathyroid hormone (PTH) alongside elevated calcitonin (CT). Urinary phosphorus and cyclic adenosine monophosphate (cAMP) were also increased in TB patients.
Area of Science:
- Endocrinology
- Mineral Metabolism
- Infectious Diseases
Background:
- Tuberculosis (TB) can significantly impact mineral and hormonal homeostasis.
- Understanding these changes is crucial for managing TB patients.
Purpose of the Study:
- To evaluate serum and urinary levels of calcium, phosphorus, magnesium, parathyroid hormone (PTH), calcitonin (CT), and cyclic adenosine monophosphate (cAMP) in recently diagnosed pulmonary TB patients.
- To compare these levels with a healthy control group.
Main Methods:
- Serum and 24-hour urine samples were collected from 61 TB patients and 22 healthy controls.
- Measurements included serum Ca, P, Mg, PTH, CT, cAMP, and urinary Ca, P, Mg, cAMP.
- Nephrogenous cAMP (NcAMP) was calculated.
Main Results:
- TB patients showed significantly reduced serum calcium and PTH, but elevated serum CT compared to controls.
- Serum magnesium, phosphorus, and cAMP, along with urinary calcium and magnesium, were similar between groups.
- Urinary phosphorus, cAMP, and NcAMP were significantly increased in TB patients.
Conclusions:
- Reduced serum calcium in TB may stem from impaired absorption, low intake, hypoalbuminemia, vitamin D deficiency, or elevated CT.
- Elevated serum CT in TB could be linked to bronchial K-cell secretion.
- Increased urinary cAMP and NcAMP may be associated with elevated antidiuretic hormone (ADH).
- Elevated urinary phosphorus in TB might be due to tissue breakdown, decreased PTH, or increased CT.