Document Detail


Bone resorption is increased in pheochromocytoma patients and normalizes following adrenalectomy.
MedLine Citation:
PMID:  22990094     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
CONTEXT: The sympathetic nervous system (SNS) controls bone turnover in rodents, but it is uncertain whether a similar role for the SNS exists in humans. Pheochromocytomas are catecholamine-producing neuroendocrine tumors. Because catecholamines are the neurotransmitters of the SNS, we hypothesized that pheochromocytoma patients have increased bone turnover.
OBJECTIVE: Our objective was to compare bone turnover in pheochromocytoma patients and controls.
DESIGN AND SETTING: This retrospective case-control study was performed at the Endocrine Department of the Academic Medical Center of the University of Amsterdam in The Netherlands from 2007 until 2011.
PATIENTS: All patients were screened for pheochromocytoma. Cases (n = 21) were identified by 24-h urinary excretion of fractionated metanephrines above the institutional reference value and confirmed by histology after adrenalectomy. All patients screened and diagnosed as not having pheochromocytoma served as controls (n = 126).
MAIN OUTCOME MEASURE: The difference in bone turnover markers C-terminal cross-linking telopeptides of collagen type I (CTx) and procollagen type 1 N propeptide (P1NP) between cases and controls was the main outcome measure.
RESULTS: CTx concentrations were higher in cases [343 ng/liter; interquartile range (IQR), 295 ng/liter] than in controls (232 ng/liter; IQR, 168 ng/liter; P < 0.001) and decreased after adrenalectomy [before, 365 ng/liter (IQR, 450 ng/liter); after, 290 ng/liter (IQR, 241 ng/liter); P = 0.044]. The effect remained after adjustment for possible confounders. P1NP concentrations did not differ.
CONCLUSIONS: This study shows that pheochromocytoma patients have increased bone resorption, which normalizes after adrenalectomy. This finding supports the concept of regulation of bone remodeling by the SNS in humans.
Authors:
A G Veldhuis-Vlug; M El Mahdiui; E Endert; A C Heijboer; E Fliers; P H Bisschop
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2012-09-18
Journal Detail:
Title:  The Journal of clinical endocrinology and metabolism     Volume:  97     ISSN:  1945-7197     ISO Abbreviation:  J. Clin. Endocrinol. Metab.     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-06     Completed Date:  2013-01-25     Revised Date:  2014-07-31    
Medline Journal Info:
Nlm Unique ID:  0375362     Medline TA:  J Clin Endocrinol Metab     Country:  United States    
Other Details:
Languages:  eng     Pagination:  E2093-7     Citation Subset:  AIM; IM    
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MeSH Terms
Descriptor/Qualifier:
Adrenal Gland Neoplasms / physiopathology*,  surgery
Adrenalectomy
Adult
Aged
Bone Resorption / physiopathology*,  surgery
Case-Control Studies
Female
Humans
Male
Middle Aged
Pheochromocytoma / physiopathology*,  surgery
Retrospective Studies
Sympathetic Nervous System / physiopathology*
Treatment Outcome

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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