{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,20]],"date-time":"2026-08-20T16:37:38Z","timestamp":1787243858582,"version":"build-2736575974"},"reference-count":51,"publisher":"American Physiological Society","issue":"5","funder":[{"DOI":"10.13039\/100000050","name":"HHS | NIH | National Heart, Lung, and Blood Institute","doi-asserted-by":"publisher","award":["HL123301"],"award-info":[{"award-number":["HL123301"]}],"id":[{"id":"10.13039\/100000050","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000050","name":"HHS | NIH | National Heart, Lung, and Blood Institute","doi-asserted-by":"publisher","award":["HL07736"],"award-info":[{"award-number":["HL07736"]}],"id":[{"id":"10.13039\/100000050","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["American Journal of Physiology-Heart and Circulatory Physiology"],"published-print":{"date-parts":[[2019,11,1]]},"abstract":"<jats:p>\n                    Hydrogen sulfide (H\n                    <jats:sub>2<\/jats:sub>\n                    S) dilates isolated arteries, and knockout of the H\n                    <jats:sub>2<\/jats:sub>\n                    S-synthesizing enzyme cystathionine \u03b3-lyase (CSE) increases blood pressure. However, the contributions of endogenously produced H\n                    <jats:sub>2<\/jats:sub>\n                    S to blood flow regulation in specific vascular beds are unknown. Published studies in isolated arteries show that CSE production of H\n                    <jats:sub>2<\/jats:sub>\n                    S influences vascular tone more in small mesenteric arteries than in renal arteries or the aorta. Therefore, the goal of this study was to evaluate H\n                    <jats:sub>2<\/jats:sub>\n                    S regulation of blood pressure, vascular resistance, and regional blood flows using chronically instrumented rats. We hypothesized that during whole animal CSE inhibition, vascular resistance would increase more in the mesenteric than the renal circulation. Under anesthesia, CSE inhibition [\u03b2-cyanoalanine (BCA), 30 mg\/kg bolus + 5 mg\u00b7kg\n                    <jats:sup>\u22121<\/jats:sup>\n                    \u00b7min\n                    <jats:sup>\u22121<\/jats:sup>\n                    for 20 min iv) rapidly increased mean arterial pressure (MAP) more than saline administration (%\u0394: saline \u22121.4\u2009\u00b1\u20090.75 vs. BCA 7.1\u2009\u00b1\u20091.69, P &lt; 0.05) but did not change resistance (MAP\/flow) in either the mesenteric or renal circulation. In conscious rats, BCA infusion similarly increased MAP (%\u0394: saline \u22120.8\u2009\u00b1\u20091.18 vs. BCA 8.2\u2009\u00b1\u20092.6, P &lt; 0.05, n = 7) and significantly increased mesenteric resistance (saline 0.9\u2009\u00b1\u20093.1 vs. BCA 15.6\u2009\u00b1\u20096.5, P &lt; 0.05, n = 12). The H\n                    <jats:sub>2<\/jats:sub>\n                    S donor Na\n                    <jats:sub>2<\/jats:sub>\n                    S (50 mg\/kg) decreased blood pressure and mesenteric resistance ,but the fall in resistance was not significant. Inhibiting CSE for multiple days with dl-proparglycine (PAG, 50 mg\u00b7kg\n                    <jats:sup>\u22121<\/jats:sup>\n                    \u00b7min\n                    <jats:sup>\u22121<\/jats:sup>\n                    iv bolus for 5 days) significantly increased vascular resistance in both mesenteric (ratio of day 1: saline 0.86\u2009\u00b1\u20090.033 vs. PAG 1.79\u2009\u00b1\u20090.38) and renal circulations (ratio of day 1: saline 1.26\u2009\u00b1\u20090.22 vs. 1.98\u2009\u00b1\u20090.14 PAG). These results support our hypothesis that CSE-derived H\n                    <jats:sub>2<\/jats:sub>\n                    S is an important regulator of blood pressure and vascular resistance in both mesenteric and renal circulations. Furthermore, inhalation anesthesia diminishes the effect of CSE inhibition on vascular tone.\n                  <\/jats:p>\n                  <jats:p>\n                    NEW &amp; NOTEWORTHY These results suggest that CSE-derived H\n                    <jats:sub>2<\/jats:sub>\n                    S has a prominent role in regulating blood pressure and blood flow under physiological conditions, which may have been underestimated in prior studies in anesthetized subjects. Therefore, enhancing substrate availability or enzyme activity or dosing with H\n                    <jats:sub>2<\/jats:sub>\n                    S donors could be a novel therapeutic approach to treat cardiovascular diseases.\n                  <\/jats:p>","DOI":"10.1152\/ajpheart.00303.2019","type":"journal-article","created":{"date-parts":[[2019,10,18]],"date-time":"2019-10-18T09:30:52Z","timestamp":1571391052000},"page":"H1157-H1165","source":"Crossref","is-referenced-by-count":13,"title":["Hydrogen sulfide regulation of renal and mesenteric blood flow"],"prefix":"10.1152","volume":"317","author":[{"given":"Humberto","family":"Morales-Loredo","sequence":"first","affiliation":[{"name":"Vascular Physiology Group, Department of Cell Biology and Physiology, School of Medicine, University of New Mexico, Albuquerque, New Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adelaeda","family":"Barrera","sequence":"additional","affiliation":[{"name":"Vascular Physiology Group, Department of Cell Biology and Physiology, School of Medicine, University of New Mexico, Albuquerque, New Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joshua M.","family":"Garcia","sequence":"additional","affiliation":[{"name":"Vascular Physiology Group, Department of Cell Biology and Physiology, School of Medicine, University of New Mexico, Albuquerque, New Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carolyn E.","family":"Pace","sequence":"additional","affiliation":[{"name":"Vascular Physiology Group, Department of Cell Biology and Physiology, School of Medicine, University of New Mexico, Albuquerque, New Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5725-4664","authenticated-orcid":false,"given":"Jay S.","family":"Naik","sequence":"additional","affiliation":[{"name":"Vascular Physiology Group, Department of Cell Biology and Physiology, School of Medicine, University of New Mexico, Albuquerque, New Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laura V.","family":"Gonzalez Bosc","sequence":"additional","affiliation":[{"name":"Vascular Physiology Group, Department of Cell Biology and Physiology, School of Medicine, University of New Mexico, Albuquerque, New Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nancy L.","family":"Kanagy","sequence":"additional","affiliation":[{"name":"Vascular Physiology Group, Department of Cell Biology and Physiology, School of Medicine, University of New Mexico, Albuquerque, New Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"24","reference":[{"key":"B1","doi-asserted-by":"publisher","DOI":"10.3892\/ijmm.2016.2771"},{"key":"B2","doi-asserted-by":"publisher","DOI":"10.1093\/ndt\/gfr560"},{"key":"B3","doi-asserted-by":"publisher","DOI":"10.1111\/bph.12171"},{"key":"B4","first-page":"14","volume":"17","author":"Askari 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