Document Detail


Relation between low calcium intake, parathyroid hormone, and blood pressure.
MedLine Citation:
PMID:  10818080     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In a population health survey in 1995, serum parathyroid hormone (PTH) was measured in 1113 subjects, aged 30 to 79 years, and was found to be elevated (>6.9 pmol/L) in 118 subjects. In 1998, this group and 131 subjects with normal PTH levels were invited for reexamination, and 82 and 90 subjects from each respective group attended the follow-up. At the follow-up, 72 subjects had elevated and 100 had normal serum PTH levels. Those with elevated serum PTH levels (8 subjects with hyperparathyroidism were excluded) had significantly lower serum calcium levels and intake of calcium than those with normal PTH (2.24+/-0.09 and 2.29+/-0.10 mmol/L [mean+/-SD] and 400.3+/-227.3 and 592.1+/-459.6 mg/d, respectively; P<0.01). Serum levels or intake of vitamin D did not differ between the 2 groups. Subjects with elevated PTH in both 1995 and 1998 had significantly lower bone mineral content and bone mineral density in the lumbar spine than did those with persistently normal PTH levels (P<0.05). In the females, but not in the males, the systolic and diastolic blood pressures were significantly higher in those with elevated serum PTH (158.0+/-27.5 versus 141.5+/-19.2 mm Hg and 90. 5+/-13.6 versus 82.6+/-8.6 mm Hg, respectively; P<0.01). This difference was even more pronounced when those with persistently elevated PTH were considered separately. In conclusion, reduced intake of calcium is frequently associated with high levels of serum PTH. This is associated with moderately reduced bone mineral content and bone mineral density in the lumbar spine. In women, high levels of serum PTH are also associated with markedly increased blood pressure.
Authors:
R Jorde; J Sundsfjord; E Haug; K H Bonaa
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Hypertension     Volume:  35     ISSN:  1524-4563     ISO Abbreviation:  Hypertension     Publication Date:  2000 May 
Date Detail:
Created Date:  2000-06-21     Completed Date:  2000-06-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7906255     Medline TA:  Hypertension     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1154-9     Citation Subset:  IM    
Affiliation:
Department of Medicine, University Hospital of Tromsø, Tromsø, Norway. medrj@rito.no
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Blood Pressure / physiology*
Calcium / metabolism*
Female
Humans
Hypertension / etiology,  metabolism,  physiopathology*
Male
Middle Aged
Parathyroid Hormone / physiology*
Sex Factors
Chemical
Reg. No./Substance:
0/Parathyroid Hormone; 7440-70-2/Calcium

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


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