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Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy
Published on: July 14, 2023
Calcium-corrected intact PTH: a clinically useful parameter for quantifying parathyroid function in patients
Shozo Yano1, Edward M Brown, Hirofumi Takase
1Department of Internal Medicine 1, Shimane University Faculty of Medicine, Shimane, Japan. syano@med.shimane-u.ac.jp
Nephron. Clinical Practice
|February 23, 2010
Summary
A new "corrected PTH" index may help assess secondary hyperparathyroidism severity in chronic kidney disease patients. This index uses single measurements of corrected calcium and intact parathyroid hormone (PTH) levels.
Area of Science:
- Nephrology
- Endocrinology
- Clinical Chemistry
Background:
- Secondary hyperparathyroidism (SHPT) is common in chronic renal failure.
- Serum parathyroid hormone (PTH) concentration is a key indicator of SHPT severity.
- The inverse relationship between serum calcium (Ca) and PTH levels is well-established.
Purpose of the Study:
- To develop a novel index for assessing SHPT severity.
- To establish a new index based on the relationship between corrected calcium (cCa) and intact PTH (iPTH).
Main Methods:
- Utilized data from 70 maintenance hemodialysis (HD) patients.
- Determined the steepest slope of the cCa-iPTH relationship for individual patients.
- Developed an equation to predict iPTH based on cCa values.
Main Results:
- Derived the equation: iPTH2 = iPTH1 + (cCa1 - cCa2) x (43 + 0.47 x iPTH1).
- Defined 'corrected PTH' as predicted iPTH at cCa = 9.0 mg/dl.
- Found 'corrected PTH' correlated better with parathyroid gland volume than standard iPTH.
Conclusions:
- 'Corrected PTH' shows promise as a tool for SHPT assessment.
- This index allows for severity evaluation using single cCa and iPTH measurements.
- The findings were validated in parathyroidectomized patients.
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