Abstract | BACKGROUND AND PURPOSE: EXPERIMENTAL APPROACH: The Na+ -independent HCO3- transport system activity was assayed as the initial rate of pHi recovery after an alkaline load (CO2/HCO3 removal) in immortalized renal proximal tubular epithelial cells from spontaneously hypertensive rat (SHR) and their normotensive control (Wistar Kyoto rat; WKY). KEY RESULTS: CONCLUSIONS AND IMPLICATIONS: Differences between WKY and SHR cells on their sensitivity to alpha1-adrenoceptor stimulation did not correlate with the abundance of alpha1A- and alpha1B-adrenoceptors and may be related to the increased generation of H2O2, which may amplify the response downstream of alpha1-adrenoceptor activation.
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Authors | S Simão, S Fraga, P A Jose, P Soares-da-Silva |
Journal | British journal of pharmacology
(Br J Pharmacol)
Vol. 153
Issue 7
Pg. 1445-55
(Apr 2008)
ISSN: 0007-1188 [Print] England |
PMID | 18297111
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Adra1a protein, rat
- Adra1b protein, rat
- Chloride-Bicarbonate Antiporters
- Receptors, Adrenergic, alpha-1
- Phenylephrine
- Hydrogen Peroxide
- Norepinephrine
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Topics |
- Animals
- Cells, Cultured
- Chloride-Bicarbonate Antiporters
(metabolism)
- Dose-Response Relationship, Drug
- Epithelial Cells
(metabolism)
- Gene Expression
- Hydrogen Peroxide
(metabolism)
- Hypertension
(physiopathology)
- Kidney Tubules, Proximal
(cytology, metabolism)
- Norepinephrine
(administration & dosage, pharmacology)
- Oxidative Stress
- Phenylephrine
(administration & dosage, pharmacology)
- Rats
- Rats, Inbred SHR
- Rats, Inbred WKY
- Receptors, Adrenergic, alpha-1
(metabolism)
- Signal Transduction
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