Lack of Deficiency in Extracellular and Intralymphocyte Free Mg2+ in Genetically Hypertensive Rats
Hiroshima Journal of Medical Sciences Volume 48 Issue 1
Page 1-8
published_at 1999-03
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Title ( eng ) |
Lack of Deficiency in Extracellular and Intralymphocyte Free Mg2+ in Genetically Hypertensive Rats
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Creator |
Sasaki Nobuo
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Source Title |
Hiroshima Journal of Medical Sciences
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Volume | 48 |
Issue | 1 |
Start Page | 1 |
End Page | 8 |
Journal Identifire |
[PISSN] 0018-2052
[EISSN] 2433-7668
[NCID] AA00664312
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Abstract |
Recently it has been suggested that Mg deficiency may play a key role in hypertension and several cardiovascular diseases. In order to investigate the status of Mg in genetic hypertension, the cytosolic free Mg2+ concentration ([Mg2+]i) in the lymphocytes and serum concentrations of free Mg2+ and total Mg were measured in spontaneously hypertensive rats/Izumo (SHR/Izm), stroke-prone spontaneously hypertensive rats/Izumo (SHRSP/Izm), and Wistar-Kyoto rats/Izumo (WKY/Izm). In addition, the basal cytosolic free Ca2+ concentration ([Ca2+]i) was assessed in the three strains. Systolic blood pressure was highest in SHRSP/Izm and lowest in WKY/Izm. No significant differences were found in either the serum free Mg2+ concentrations or the serum total Mg concentrations among WKY/Izm, SHR/Izm, and SHRSP/Izm. [Mg2+]i in the lymphocytes was significantly higher in SHR/Izm than in WKY/Izm (254±51 versus 201±36μmol/liter, p<0.05), but the [Mg2+]i in SHRSP/Izm (211±34μmol/liter) was at the same level as in WKY/Izm. No significant correlation was found between [Mg2+]i in the lymphocytes and systolic blood pressure. Basal [Ca2+]i did not differ among the three strains. Thus, an increase in [Ca2+]i is not obligatory in all cells of genetically hypertensive rats. Mg deficiency may not exist in the intracellular or extracellular space in genetically hypertensive rats.
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Keywords |
Cytosolic magnesium
Lymphocyte
Mag-fura-2
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NDC |
Medical sciences [ 490 ]
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Language |
eng
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Resource Type | departmental bulletin paper |
Publisher |
Hiroshima University Medical Press
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Date of Issued | 1999-03 |
Publish Type | Version of Record |
Access Rights | open access |
Source Identifier |
[ISSN] 0018-2052
[NCID] AA00664312
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