Document Detail

Intralymphocyte free magnesium in a group of subjects with essential hypertension.
MedLine Citation:
PMID:  8794829     Owner:  NLM     Status:  MEDLINE    
Despite the importance of magnesium in essential hypertension, few data are available on the ionized intracellular concentration of this ion. We therefore studied intralymphocyte free intracellular magnesium (Mgi) in 32 untreated essential hypertensive subjects and 27 normotensive control subjects by means of a fluorimetric technique based on the use of the new magnesium-sensitive dye furaptra. We also measured intralymphocyte ionized calcium (Cai) with fura 2. No statistically significant differences were found in Mgi in hypertensive compared with normotensive subjects (essential hypertensive, 0.291 +/- 0.053 mmol/L; normotensive, 0.293 +/- 0.043 [mean +/- SD]). A statistically significant inverse correlation was established between Mgi and plasma triglycerides in essential hypertensive subjects (r = -.521, P = .002). The hypertensive group was arbitrarily divided into two subgroups according to plasma triglyceride levels (> 2 [n = 10] or < 2 mmol/L [n = 22]), and Mgi proved to be significantly lower in the subgroup with high plasma triglyceride levels compared with either the subgroup with normal triglycerides (P = .009; 95% confidence interval, 0.013-0.088) or the normotensive control group as a whole (P = .03; 95% confidence interval, 0.003-0.069) (high-triglyceride hypertensive subgroup, Mgi = 0.256 +/- 0.045 mmol/L; normal-triglyceride hypertensive subgroup, Mgi = 0.307 +/- 0.049). No statistically significant differences were found in Cai in hypertensive compared with normotensive subjects (hypertensive, 53 +/- 12 nmol/L; normotensive, 54 +/- 14). We did not find statistically significant correlations between Cai and plasma triglycerides, nor did we find any differences in Cai between the subgroup of hypertensive subjects with high plasma triglyceride levels and either the subgroup of hypertensive subjects with normal triglycerides or the normotensive control group as a whole. The discrepancies between our results in lymphocytes and data relating to either erythrocytes or platelets emphasize the need for caution before the results are extrapolated from one tissue to the other. The decreased Mgi levels in the subgroup of high-triglyceride hypertensive subjects may suggest a role for magnesium in plurimetabolic syndrome.
P T Delva; C Pastori; M Degan; G D Montesi; A Lechi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Hypertension     Volume:  28     ISSN:  0194-911X     ISO Abbreviation:  Hypertension     Publication Date:  1996 Sep 
Date Detail:
Created Date:  1996-11-22     Completed Date:  1996-11-22     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7906255     Medline TA:  Hypertension     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  433-9     Citation Subset:  IM    
Institute of Internal Medicine, University of Verona, Italy.
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MeSH Terms
Calcium / blood
Hypertension / blood,  metabolism*
Intracellular Membranes / metabolism
Lymphocytes / metabolism*
Magnesium / blood*
Middle Aged
Reference Values
Triglycerides / blood
Reg. No./Substance:
0/Triglycerides; 7439-95-4/Magnesium; 7440-70-2/Calcium

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

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