{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T23:22:59Z","timestamp":1789428179035,"version":"build-2803163510"},"reference-count":60,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"2","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Circulation Research"],"published-print":{"date-parts":[[2026,1,16]]},"abstract":"<jats:sec>\n                    <jats:title>BACKGROUND:<\/jats:title>\n                    <jats:p>Hypertension is the single most important risk factor for cardiovascular diseases and remains poorly controlled. Currently, 40% of treated patients remain hypertensive. We propose that this is in part due to excessive sympathetic activity. We hypothesized that neuronal expiratory oscillations, in the medullary lateral parafacial (pFL) region, become activated in conditions of neurogenic hypertension and that silencing their activity would be antihypertensive.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>METHODS:<\/jats:title>\n                    <jats:p>pFL neurons were manipulated by viral transfection. Using optogenetic and pharmacogenetic modulation, pFL neurons were either excited or inhibited in rats while recording sympathetic neurons from the rostral ventrolateral medulla (RVLM) and pontine noradrenergic A5 region, sympathetic activity, respiratory motor outflows, and arterial pressure from normotensive and hypertensive rats in vitro, in situ, and in vivo. Rats were made neurogenically hypertensive using chronic intermittent hypoxia.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>RESULTS:<\/jats:title>\n                    <jats:p>Optogenetic activation of pFL neurons triggered active expiration and positively modulated sympathetic activity during expiration, causing blood pressure to rise. pFL neurons projected to the RVLM and A5 presympathetic neurons and excited them during expiration, but in hypertension, only the pFL-RVLM synaptic transmission was enhanced. Pharmacogenetic inhibition of pFL neurons eliminated the expiratory-related sympatho-excitation and normalized arterial pressure in hypertensive rats.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>CONCLUSIONS:<\/jats:title>\n                    <jats:p>The heightened sympathetic activity inducing hypertension triggered by chronic intermittent hypoxia is caused, in the most part, by the emergence of pFL expiratory oscillations driving RVLM and A5 sympathetic vasomotor neurons and active expiration simultaneously. We propose that suppressing pFL neurons would have therapeutic potential.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1161\/circresaha.125.326674","type":"journal-article","created":{"date-parts":[[2025,12,17]],"date-time":"2025-12-17T10:00:11Z","timestamp":1765965611000},"update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Lateral Parafacial Neurons Evoked Expiratory Oscillations Driving Neurogenic Hypertension"],"prefix":"10.1161","volume":"138","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5755-6147","authenticated-orcid":true,"given":"Karolyne S.","family":"Magalh\u00e3es","sequence":"first","affiliation":[{"name":"Department of Physiology, School of Medicine of Ribeir\u00e3o Preto (K.S.M., R.W.M.S., N.S., T.M.S., B.H.M.), University of S\u00e3o Paulo, Brazil."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9023-2777","authenticated-orcid":true,"given":"Renato W.","family":"Martins S\u00e1","sequence":"additional","affiliation":[{"name":"Department of Physiology, School of Medicine of Ribeir\u00e3o Preto (K.S.M., R.W.M.S., N.S., T.M.S., B.H.M.), University of S\u00e3o Paulo, Brazil."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nathalia","family":"Salim","sequence":"additional","affiliation":[{"name":"Department of Physiology, School of Medicine of Ribeir\u00e3o Preto (K.S.M., R.W.M.S., N.S., T.M.S., B.H.M.), University of S\u00e3o Paulo, Brazil."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7570-8634","authenticated-orcid":true,"given":"Tha\u00eds Marques da","family":"Silva","sequence":"additional","affiliation":[{"name":"Department of Physiology, School of Medicine of Ribeir\u00e3o Preto (K.S.M., R.W.M.S., N.S., T.M.S., B.H.M.), University of S\u00e3o Paulo, Brazil."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benedito H.","family":"Machado","sequence":"additional","affiliation":[{"name":"Department of Physiology, School of Medicine of Ribeir\u00e3o Preto (K.S.M., R.W.M.S., N.S., T.M.S., B.H.M.), University of S\u00e3o Paulo, Brazil."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7527-5493","authenticated-orcid":true,"given":"Julian F.R.","family":"Paton","sequence":"additional","affiliation":[{"name":"Manaaki Manawa\u2014The Centre for Heart Research, Department of Physiology, Faculty of Medical and Health Sciences, University of Auckland, New Zealand (J.F.R.P.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6132-0217","authenticated-orcid":true,"given":"Davi J.A.","family":"Moraes","sequence":"additional","affiliation":[{"name":"Department of Physiology and Biophysics, 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