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Effect of dietary chloride on spontaneously hypertensive rat. 1991

M Tanaka, and S Katoh, and N Sugino
Department of Medicine, Tokyo Women's Medical College, Japan.

The anionic component of sodium salt has been reported to contribute to hypertension in some animal models and hypertensive patients. In the present study, the anionic effects on exacerbation of hypertension in spontaneously hypertensive rat (SHR) were investigated by chronic loading tests with two sources of sodium, viz. sodium chloride (NaCl; 0.9% solution) and sodium bicarbonate (NaHCO3; 1.28% solution), using SHRs with normal renal function (NRF) and with chronic renal failure (CRF; produced by cryosurgery). In addition, extracellular fluid volume (ECFV: inulin space) was measured in SHRs with NRF and CRF. In the NRF groups, systolic blood pressure (SBP) reached 230 mmHg at Week 13, and there was no significant difference in SBP between the NaCl and NaHCO3 groups. In the CRF groups, SBP of the NaCl group was significantly higher (p less than 0.01) than that of the NaHCO3 group (280 mmHg vs. 230 mmHg at Week 15). ECFV was also greater in the NaCl group than in the NaHCO3 group (ECFV: NaCl vs. NaHCO3, 15.9 +/- 1.7 vs. 14.0 +/- 0.9 at Week 13; and 16.2 +/- 1.1 vs. 14.2 +/- 1.2 at Week 15, respectively). These results indicate that chloride ion plays an important role in the pathogenesis of hypertension in SHR with CRF. Expansion of ECFV is considered to be one of the mechanisms whereby the hypertension is exacerbated.

UI MeSH Term Description Entries
D006973 Hypertension Persistently high systemic arterial BLOOD PRESSURE. Based on multiple readings (BLOOD PRESSURE DETERMINATION), hypertension is currently defined as when SYSTOLIC PRESSURE is consistently greater than 140 mm Hg or when DIASTOLIC PRESSURE is consistently 90 mm Hg or more. Blood Pressure, High,Blood Pressures, High,High Blood Pressure,High Blood Pressures
D007676 Kidney Failure, Chronic The end-stage of CHRONIC RENAL INSUFFICIENCY. It is characterized by the severe irreversible kidney damage (as measured by the level of PROTEINURIA) and the reduction in GLOMERULAR FILTRATION RATE to less than 15 ml per min (Kidney Foundation: Kidney Disease Outcome Quality Initiative, 2002). These patients generally require HEMODIALYSIS or KIDNEY TRANSPLANTATION. ESRD,End-Stage Renal Disease,Renal Disease, End-Stage,Renal Failure, Chronic,Renal Failure, End-Stage,Chronic Kidney Failure,End-Stage Kidney Disease,Chronic Renal Failure,Disease, End-Stage Kidney,Disease, End-Stage Renal,End Stage Kidney Disease,End Stage Renal Disease,End-Stage Renal Failure,Kidney Disease, End-Stage,Renal Disease, End Stage,Renal Failure, End Stage
D008297 Male Males
D011918 Rats, Inbred SHR A strain of Rattus norvegicus with elevated blood pressure used as a model for studying hypertension and stroke. Rats, Spontaneously Hypertensive,Rats, SHR,Inbred SHR Rat,Inbred SHR Rats,Rat, Inbred SHR,Rat, SHR,Rat, Spontaneously Hypertensive,SHR Rat,SHR Rat, Inbred,SHR Rats,SHR Rats, Inbred,Spontaneously Hypertensive Rat,Spontaneously Hypertensive Rats
D001794 Blood Pressure PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS. Systolic Pressure,Diastolic Pressure,Pulse Pressure,Pressure, Blood,Pressure, Diastolic,Pressure, Pulse,Pressure, Systolic,Pressures, Systolic
D002712 Chlorides Inorganic compounds derived from hydrochloric acid that contain the Cl- ion. Chloride,Chloride Ion Level,Ion Level, Chloride,Level, Chloride Ion
D004032 Diet Regular course of eating and drinking adopted by a person or animal. Diets
D004573 Electrolytes Substances that dissociate into two or more ions, to some extent, in water. Solutions of electrolytes thus conduct an electric current and can be decomposed by it (ELECTROLYSIS). (Grant & Hackh's Chemical Dictionary, 5th ed) Electrolyte
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

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