{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T09:52:16Z","timestamp":1788861136651,"version":"build-2803163510"},"reference-count":48,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2016,12,15]],"date-time":"2016-12-15T00:00:00Z","timestamp":1481760000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","doi-asserted-by":"publisher","award":["472254\/2008\u20101"],"award-info":[{"award-number":["472254\/2008\u20101"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004901","name":"Funda\u00e7\u00e3o de Amparo \u00e0 Pesquisa do Estado de Minas Gerais","doi-asserted-by":"publisher","award":["APQ\u201004161\u201010"],"award-info":[{"award-number":["APQ\u201004161\u201010"]}],"id":[{"id":"10.13039\/501100004901","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Experimental Physiology"],"published-print":{"date-parts":[[2017,1]]},"abstract":"<jats:sec><jats:title>New Findings<\/jats:title><jats:p><jats:list list-type=\"bullet\">\n<jats:list-item><jats:p><jats:bold>What is the central question of this study?<\/jats:bold><\/jats:p>\n<jats:p>In this study, we sought to investigate whether cardiovascular responses to peripheral chemoreflex activation of rats recovered from protein restriction are related to activation of AT<jats:sub>1<\/jats:sub> receptors.<\/jats:p>\n<\/jats:list-item>\n<jats:list-item><jats:p><jats:bold>What is the main finding and its importance?<\/jats:bold><\/jats:p>\n<jats:p>This study highlights the fact that angiotensinergic mechanisms activated by AT<jats:sub>1<\/jats:sub> receptors do not support increased responses to peripheral chemoreflex activation by KCN in rats recovered from protein restriction. Also, we found that protein restriction led to increased resting ventilation in adult rats, even after recovery.<\/jats:p>\n<\/jats:list-item>\n<\/jats:list><\/jats:p><\/jats:sec><jats:sec><jats:label\/><jats:p>The effects of a low\u2010protein diet followed by recovery on cardiorespiratory responses to peripheral chemoreflex activation were tested before and after systemic angiotensin\u00a0II type\u00a01 (AT<jats:sub>1<\/jats:sub>) receptor antagonism. Male Fischer rats were divided into control and recovered (R\u2010PR) groups after weaning. The R\u2010PR rats were fed a low\u2010protein (8%) diet for 35 days and recovered with a normal protein (20%) diet for 70 days. Control rats received a normal protein diet for 105 days (CG<jats:sub>105<\/jats:sub>). After cannulation surgery, mean arterial pressure, heart rate, respiratory frequency, tidal volume and minute ventilation were acquired using a digital recording system in freely moving rats. The role of angintensin II was evaluated by systemic antagonism of AT<jats:sub>1<\/jats:sub> receptors with losartan (20\u00a0mg\u00a0kg<jats:sup>\u22121<\/jats:sup>\n<jats:sc>i.v<\/jats:sc>.). The peripheral chemoreflex was elicited by increasing doses of KCN (20\u2013160\u00a0\u03bcg\u00a0kg\u00a0min<jats:sup>\u22121<\/jats:sup>, <jats:sc>i.v<\/jats:sc>.). At baseline, R\u2010PR rats presented increased heart rate and minute ventilation (372\u00a0\u00b1\u00a034\u00a0beats\u00a0min<jats:sup>\u22121<\/jats:sup> and 1.274\u00a0\u00b1\u00a0377\u00a0ml\u00a0kg<jats:sup>\u22121<\/jats:sup>\u00a0min<jats:sup>\u22121<\/jats:sup>) compared with CG<jats:sub>105<\/jats:sub> animals (332\u00a0\u00b1\u00a022\u00a0beats\u00a0min<jats:sup>\u22121<\/jats:sup> and 856\u00a0\u00b1\u00a0112\u00a0ml\u00a0kg<jats:sup>\u22121<\/jats:sup>\u00a0min<jats:sup>\u22121<\/jats:sup>). Mean arterial pressure was not different between the groups. Pressor and bradycardic responses evoked by KCN (60\u00a0\u03bcg\u00a0kg<jats:sup>\u22121<\/jats:sup>) were increased in R\u2010PR (+45\u00a0\u00b1\u00a013\u00a0mmHg and \u221277\u00a0\u00b1\u00a047\u00a0beats\u00a0min<jats:sup>\u22121<\/jats:sup>) compared with CG<jats:sub>105<\/jats:sub> rats (+25\u00a0\u00b1\u00a017\u00a0mmHg and \u221227\u00a0\u00b1\u00a028\u00a0beats\u00a0min<jats:sup>\u22121<\/jats:sup>), but no difference was found in the tachypnoeic response. These differences were preserved after losartan. The data suggest that angiotensin\u00a0II acting on AT<jats:sub>1<\/jats:sub> receptors may not be associated with the increased heart rate, increased minute ventilation and acute cardiovascular responses to peripheral chemoreflex activation in rats that underwent postweaning protein restriction followed by recovery.<\/jats:p><\/jats:sec>","DOI":"10.1113\/ep085791","type":"journal-article","created":{"date-parts":[[2016,10,20]],"date-time":"2016-10-20T13:27:06Z","timestamp":1476970026000},"page":"34-47","source":"Crossref","is-referenced-by-count":4,"title":["Changes in cardiovascular responses to chemoreflex activation of rats recovered from protein restriction are not related to AT<sub>1<\/sub> receptors"],"prefix":"10.1113","volume":"102","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9023-2777","authenticated-orcid":false,"given":"Renato Willian Martins","family":"S\u00e1","sequence":"first","affiliation":[{"name":"Department of Biological Sciences, ICEB\/NUPEB Federal 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