Article ; Online: Afferent arteriole responsiveness to endothelin receptor activation: does sex matter?
2019 Volume 10, Issue 1, Page(s) 1
Abstract: Background: The pathogenesis of hypertension is distinct between men and women. Endothelin-1 (ET-1) is a potential contributor to sex differences in the pathophysiology of hypertension. ET-1 participates in blood pressure regulation through activation ... ...
Abstract | Background: The pathogenesis of hypertension is distinct between men and women. Endothelin-1 (ET-1) is a potential contributor to sex differences in the pathophysiology of hypertension. ET-1 participates in blood pressure regulation through activation of endothelin A (ET Methods: Male and female Sprague Dawley rats were subjected to gonadectomy or sham surgery (n = 6/group). After 3 weeks, kidneys from those rats were prepared for assessment of renal microvascular responses to ET-1 (ET Results: Control afferent arteriole diameters at 100 mmHg were similar between sham male and female rats averaging 14.6 ± 0.3 and 15.3 ± 0.3 μm, respectively. Gonadectomy had no significant effect on control arteriole diameter. In sham males, ET-1 produced significant concentration-dependent decreases in afferent arteriole diameter, with 10 Conclusion: These data demonstrate that sex does not significantly influence afferent arteriole reactivity to ET receptor activation. Gonadectomy potentiated the responsiveness of the afferent arteriole to ET |
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MeSH term(s) | Animals ; Arterioles/drug effects ; Arterioles/physiology ; Castration ; Endothelin-1/pharmacology ; Female ; Male ; Microcirculation/drug effects ; Rats, Sprague-Dawley ; Receptor, Endothelin A/agonists ; Receptor, Endothelin A/physiology ; Receptor, Endothelin B/agonists ; Receptor, Endothelin B/physiology ; Sex Characteristics ; Vasoconstriction/drug effects ; Vasoconstrictor Agents/pharmacology ; Viper Venoms/pharmacology |
Chemical Substances | Endothelin-1 ; Receptor, Endothelin A ; Receptor, Endothelin B ; Vasoconstrictor Agents ; Viper Venoms ; sarafotoxins s6 |
Language | English |
Publishing date | 2019-01-03 |
Publishing country | England |
Document type | Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't |
ZDB-ID | 2587352-0 |
ISSN | 2042-6410 ; 2042-6410 |
ISSN (online) | 2042-6410 |
ISSN | 2042-6410 |
DOI | 10.1186/s13293-018-0218-2 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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