{"id":1228,"date":"2026-05-01T18:19:58","date_gmt":"2026-05-01T18:19:58","guid":{"rendered":"http:\/\/c-ciarn.ca\/?p=1228"},"modified":"2026-05-01T18:19:58","modified_gmt":"2026-05-01T18:19:58","slug":"sln-and-pln-mrna-expression-was-then-compared-in-male-and-female-patients","status":"publish","type":"post","link":"https:\/\/c-ciarn.ca\/?p=1228","title":{"rendered":"\ufeffSLN and PLN mRNA expression was then compared in male and female patients"},"content":{"rendered":"

\ufeffSLN and PLN mRNA expression was then compared in male and female patients.Supplemental Figures 2B and 3Bdemonstrate that SLN and PLN mRNA expression do not differ between the male and female MR patients. in MR patients. Ingenuity pathway analysis recognized significant activation of pathways involved in -adrenergic, cyclic AMP, and G-protein coupled signaling; while there was downregulation of pathways associated with match activation and acute phase response. SERCA2a and phospholamban protein were unchanged in MR vs. control LVs. However, mRNA and protein levels of the sarcoplasmic reticulum (SR) Ca2+ATPase (SERCA) regulatory protein sarcolipin, which is usually predominantly expressed in normal atria, were LIMK2<\/a> increased 12- and 6-fold respectively. Immunofluorescence analysis confirmed the absence of sarcolipin in normal LVs and its marked upregulation in MR LVs. == Conclusions == These results demonstrate alterations in multiple pathways associated with -adrenergic signaling and sarcolipin in the LVs of patients with isolated MR and LVEF > 50%,suggesting a beneficial role for -adrenergic blockade in isolated MR. Keywords:mitral regurgitation, microarray, -adrenergic signaling, human left ventricle Isolated mitral regurgitation (MR) is usually characterized by left ventricular (LV) dilation and augmented stroke volume mediated by the Starling mechanism and facilitated by LV ejection into the low pressure left atrium.1These favorable conditions for LV shortening dynamics can falsely elevate LV ejection fraction (EF) despite underlying cardiomyocyte contractile impairment. Therefore, in order to preserve LV systolic function and improve survival, corrective mitral valve surgery is recommended if Tetrahydrouridine LVEF falls below 60%.2,3Nevertheless, a decrease in LV systolic function remains a risk after mitral valve repair and the mechanisms involved in the transition to irreversible cardiomyocyte damage in chronic isolated MR remain elusive. There is currently no effective medical therapy that attenuates progressive LV remodeling in isolated MR and mechanisms of LV myocardial remodeling specific to chronic MR are poorly understood.2,3 Measurement of plasma or LV interstitial fluid catecholamines has Tetrahydrouridine recognized increased sympathetic drive early and throughout the course of isolated MR in both animal models4-6and humans, respectively.7There is evidence of myocardial dysfunction from LV muscle strips and derangement of calcium handling proteins in patients with isolated MR despite LVEFs > 55%.8-11Although a comprehensive analysis of LV tissue in human isolated MR is usually lacking, there is evidence that 1-adrenergic receptor blockade (1-RB), initiated either immediately or three months after MR induction in the dog, improves LV contractility and cardiomyocyte calcium transients and cardiomyocyte fractional shortening.12,13In a retrospective analysis of patients with severe MR and normal LVEF, -RB imparts a significant independent survival benefit with or without coronary artery disease.14Further, results of a recent Phase IIb clinical trial demonstrate a beneficial effect of 1-RB vs. placebo on LVEF in patients with isolated MR over a two 12 months follow-up period.15,16 To determine whether -adrenergic signaling, or other signaling pathways, is important in patients with isolated MR, we decided the cardiac transcriptome from LV biopsies taken from patients with isolated MR and mean LVEF > 60% at the time of mitral valve corrective surgery. This analysis in patients with largely Class I-II NYHA symptoms demonstrates increased activity of adrenergic signaling pathways, leading further support for early -RB treatment in isolated MR. == Methods == == Study Subjects == The process was authorized by Tetrahydrouridine<\/a> the College or university of Alabama at Birmingham Institutional Review Panel and educated consent was from all individuals. The analysis group contains 35 individuals (age group mean 44 14, median 54, range 3471) with serious isolated MR supplementary to degenerative mitral valve disease, who have been known for corrective MV medical procedures. Individuals with obstructive coronary artery disease (> 50% stenosis), aortic valve disease, or concomitant mitral stenosis had been excluded through the scholarly research. Serious isolated MR was recorded by echocardiogram\/Doppler research and Tetrahydrouridine 31 individuals underwent cine-Magnetic Resonance Imaging (MRI). Each individual with serious isolated MR had cardiac catheterization to surgery previous. Outcomes of cine-MR from the MR group was in comparison to a normal healthful cohort from a earlier studies inside our lab15,17,18(age group 40 3, median 38, range 2162 years), who’ve simply no history history of coronary disease. At the proper period of medical procedures, LV cells was extracted from the lateral endocardial wall structure from the LV at the amount of the tips from the papillary muscle groups in all individuals. Servings from the biopsy test were in that case put into RNA or frozen and stored in 80for potential evaluation later. == Cardiac Magnetic Resonance Imaging == A 1.5-T MRI Tetrahydrouridine scanner (Sigma GE Healthcare, Milwaukee, Wisconsin) optimized for cardiac application was utilized to execute all MRIs (seeFigure 1).17-19LV volumes were computed by summation of volumes described by contours in each brief axis slice, as described in previously.<\/p>\n","protected":false},"excerpt":{"rendered":"

\ufeffSLN and PLN mRNA expression was then compared in male and female patients.Supplemental Figures 2B and 3Bdemonstrate that SLN and PLN mRNA expression do not differ between the male and female MR patients. in MR patients. Ingenuity pathway analysis recognized…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-1228","post","type-post","status-publish","format-standard","hentry","category-hsl"],"yoast_head":"\n\ufeffSLN and PLN mRNA expression was then compared in male and female patients - SGLT inhibitors in cancer therapy<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/c-ciarn.ca\/?p=1228\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\ufeffSLN and PLN mRNA expression was then compared in male and female patients - SGLT inhibitors in cancer therapy\" \/>\n<meta property=\"og:description\" content=\"\ufeffSLN and PLN mRNA expression was then compared in male and female patients.Supplemental Figures 2B and 3Bdemonstrate that SLN and PLN mRNA expression do not differ between the male and female MR patients. in MR patients. Ingenuity pathway analysis recognized...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/c-ciarn.ca\/?p=1228\" \/>\n<meta property=\"og:site_name\" content=\"SGLT inhibitors in cancer therapy\" \/>\n<meta property=\"article:published_time\" content=\"2026-05-01T18:19:58+00:00\" \/>\n<meta name=\"author\" content=\"webmaster\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"webmaster\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/c-ciarn.ca\\\/?p=1228#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/c-ciarn.ca\\\/?p=1228\"},\"author\":{\"name\":\"webmaster\",\"@id\":\"https:\\\/\\\/c-ciarn.ca\\\/#\\\/schema\\\/person\\\/8b6dc5d86359d0c93ab67fe896511b29\"},\"headline\":\"\ufeffSLN and PLN mRNA expression was then compared in male and female patients\",\"datePublished\":\"2026-05-01T18:19:58+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/c-ciarn.ca\\\/?p=1228\"},\"wordCount\":781,\"articleSection\":[\"HSL\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/c-ciarn.ca\\\/?p=1228\",\"url\":\"https:\\\/\\\/c-ciarn.ca\\\/?p=1228\",\"name\":\"\ufeffSLN and PLN mRNA expression was then compared in male and female patients - SGLT inhibitors in cancer therapy\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/c-ciarn.ca\\\/#website\"},\"datePublished\":\"2026-05-01T18:19:58+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/c-ciarn.ca\\\/#\\\/schema\\\/person\\\/8b6dc5d86359d0c93ab67fe896511b29\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/c-ciarn.ca\\\/?p=1228#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/c-ciarn.ca\\\/?p=1228\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/c-ciarn.ca\\\/?p=1228#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/c-ciarn.ca\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\ufeffSLN and PLN mRNA expression was then compared in male and female patients\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/c-ciarn.ca\\\/#website\",\"url\":\"https:\\\/\\\/c-ciarn.ca\\\/\",\"name\":\"SGLT inhibitors in cancer therapy\",\"description\":\"Just another WordPress site\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/c-ciarn.ca\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/c-ciarn.ca\\\/#\\\/schema\\\/person\\\/8b6dc5d86359d0c93ab67fe896511b29\",\"name\":\"webmaster\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/eb1cb4edef28458891be40d78fdfb788d3338b4756f4d8e49eb1f0a5dc22bd8b?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/eb1cb4edef28458891be40d78fdfb788d3338b4756f4d8e49eb1f0a5dc22bd8b?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/eb1cb4edef28458891be40d78fdfb788d3338b4756f4d8e49eb1f0a5dc22bd8b?s=96&d=mm&r=g\",\"caption\":\"webmaster\"},\"sameAs\":[\"http:\\\/\\\/c-ciarn.ca\"],\"url\":\"https:\\\/\\\/c-ciarn.ca\\\/?author=1\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\ufeffSLN and PLN mRNA expression was then compared in male and female patients - SGLT inhibitors in cancer therapy","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/c-ciarn.ca\/?p=1228","og_locale":"en_US","og_type":"article","og_title":"\ufeffSLN and PLN mRNA expression was then compared in male and female patients - SGLT inhibitors in cancer therapy","og_description":"\ufeffSLN and PLN mRNA expression was then compared in male and female patients.Supplemental Figures 2B and 3Bdemonstrate that SLN and PLN mRNA expression do not differ between the male and female MR patients. in MR patients. Ingenuity pathway analysis recognized...","og_url":"https:\/\/c-ciarn.ca\/?p=1228","og_site_name":"SGLT inhibitors in cancer therapy","article_published_time":"2026-05-01T18:19:58+00:00","author":"webmaster","twitter_card":"summary_large_image","twitter_misc":{"Written by":"webmaster","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/c-ciarn.ca\/?p=1228#article","isPartOf":{"@id":"https:\/\/c-ciarn.ca\/?p=1228"},"author":{"name":"webmaster","@id":"https:\/\/c-ciarn.ca\/#\/schema\/person\/8b6dc5d86359d0c93ab67fe896511b29"},"headline":"\ufeffSLN and PLN mRNA expression was then compared in male and female patients","datePublished":"2026-05-01T18:19:58+00:00","mainEntityOfPage":{"@id":"https:\/\/c-ciarn.ca\/?p=1228"},"wordCount":781,"articleSection":["HSL"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/c-ciarn.ca\/?p=1228","url":"https:\/\/c-ciarn.ca\/?p=1228","name":"\ufeffSLN and PLN mRNA expression was then compared in male and female patients - SGLT inhibitors in cancer therapy","isPartOf":{"@id":"https:\/\/c-ciarn.ca\/#website"},"datePublished":"2026-05-01T18:19:58+00:00","author":{"@id":"https:\/\/c-ciarn.ca\/#\/schema\/person\/8b6dc5d86359d0c93ab67fe896511b29"},"breadcrumb":{"@id":"https:\/\/c-ciarn.ca\/?p=1228#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/c-ciarn.ca\/?p=1228"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/c-ciarn.ca\/?p=1228#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/c-ciarn.ca\/"},{"@type":"ListItem","position":2,"name":"\ufeffSLN and PLN mRNA expression was then compared in male and female patients"}]},{"@type":"WebSite","@id":"https:\/\/c-ciarn.ca\/#website","url":"https:\/\/c-ciarn.ca\/","name":"SGLT inhibitors in cancer therapy","description":"Just another WordPress site","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/c-ciarn.ca\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/c-ciarn.ca\/#\/schema\/person\/8b6dc5d86359d0c93ab67fe896511b29","name":"webmaster","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/eb1cb4edef28458891be40d78fdfb788d3338b4756f4d8e49eb1f0a5dc22bd8b?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/eb1cb4edef28458891be40d78fdfb788d3338b4756f4d8e49eb1f0a5dc22bd8b?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/eb1cb4edef28458891be40d78fdfb788d3338b4756f4d8e49eb1f0a5dc22bd8b?s=96&d=mm&r=g","caption":"webmaster"},"sameAs":["http:\/\/c-ciarn.ca"],"url":"https:\/\/c-ciarn.ca\/?author=1"}]}},"_links":{"self":[{"href":"https:\/\/c-ciarn.ca\/index.php?rest_route=\/wp\/v2\/posts\/1228","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/c-ciarn.ca\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/c-ciarn.ca\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/c-ciarn.ca\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/c-ciarn.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1228"}],"version-history":[{"count":1,"href":"https:\/\/c-ciarn.ca\/index.php?rest_route=\/wp\/v2\/posts\/1228\/revisions"}],"predecessor-version":[{"id":1229,"href":"https:\/\/c-ciarn.ca\/index.php?rest_route=\/wp\/v2\/posts\/1228\/revisions\/1229"}],"wp:attachment":[{"href":"https:\/\/c-ciarn.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1228"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c-ciarn.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1228"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/c-ciarn.ca\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1228"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}