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Regulation of parathyroid cell proliferation
J Silver1, S B Sela, T Naveh-Many
1Minerva Center for Calcium and Bone Metabolism, Hadassah University Hospital, Jerusalem, Israel.
Current Opinion in Nephrology and Hypertension
|July 1, 1997
Summary
Parathyroid cells can proliferate, especially with low calcium or high phosphate levels, as seen in chronic kidney disease. Factors like hypophosphatemia and vitamin D can reduce this growth.
Area of Science:
- Endocrinology
- Cell Biology
- Nephrology
Background:
- The parathyroid gland has limited cell division but retains proliferative potential.
- Chronic renal failure is associated with increased parathyroid cell proliferation.
Purpose of the Study:
- To investigate factors influencing parathyroid cell proliferation.
- To understand the relevance of these factors in chronic renal failure.
Main Methods:
- In-vivo studies in rats were utilized.
- The effects of hypocalcaemia, high serum phosphate, hypophosphataemia, and 1,25(OH)2D3 on parathyroid cell proliferation were examined.
Main Results:
- Hypocalcaemia and high serum phosphate increase parathyroid cell proliferation in rats.
- Hypophosphataemia and 1,25(OH)2D3 decrease parathyroid cell proliferation.
- Genetic factors, including rearrangements and those in multiple endocrine neoplasia, are implicated in parathyroid hyperplasia and adenomas.
Conclusions:
- Serum calcium and phosphate levels significantly regulate parathyroid cell proliferation.
- These regulatory mechanisms are crucial in the context of chronic renal failure.
- Genetic predispositions contribute to parathyroid disorders.