Bone in Parathyroid Diseases Revisited: Evidence From Epidemiological, Surgical and New Drug Outcomes
Bibliographic record
Abstract
PTH-related disorders have a major impact on bone metabolism and skeletal properties because of the pivotal role of PTH in calcium and phosphate homeostasis and bone remodeling. Hyperparathyroidism is characterized by continuous exposure to excessive endogenous PTH, causing increased bone turnover in favor of bone resorption. Depending on the background of PTH overproduction, hyperparathyroidism is divided into primary, secondary, and tertiary hyperparathyroidism. The clinical presentation varies from deterioration of bone microarchitecture and decreased bone mineral density to profound bone involvement, such as osteitis fibrosa cystica and fragility fractures. Although successful parathyroidectomy represents the definitive treatment and may promote regression of most of the skeletal defects, the medical approach of calcimimetics and antiresorptive agents is a promising alternative in cases where parathyroidectomy is not feasible or unsuccessful. Hypoparathyroidism is the pathophysiological counterpart of hyperparathyroidism and also leads to disorders of bone metabolism and structure. Chronic PTH deprivation is associated with low bone remodeling and increased bone mineral density. The defective microarchitecture might affect bone strength and raise the risk for adverse skeletal events. Recombinant human PTH acts as a replacement therapy and is safe and efficient in restoring calcium/phosphate homeostasis and bone turnover. However, it is approved only for refractory cases, as conventional management with calcium and active vitamin D remains the first-line treatment. This article reviews the skeletal involvement in the most frequent parathyroid disorders, hyperparathyroidism and hypoparathyroidism, and rare familial disorders of PTH metabolism, as assessed by clinical, laboratory, and imaging parameters, and the effect of the available treatment strategies.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.007 | 0.020 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.002 |
| Bibliometrics | 0.008 | 0.011 |
| Science and technology studies | 0.000 | 0.002 |
| Scholarly communication | 0.002 | 0.003 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.006 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".