{"title":"Total Circulating PCSK9 Positively Correlates with Age and Free Circulating PCSK9 Positively Correlated with Body Mass Index in Healthy Volunteers","authors":"Anoushka Kamath , Maryam Ferdousi , Bilal Bashir , Raabya Pasha , Handrean Soran","doi":"10.1016/j.athplu.2024.08.006","DOIUrl":"10.1016/j.athplu.2024.08.006","url":null,"abstract":"","PeriodicalId":72324,"journal":{"name":"Atherosclerosis plus","volume":"57 ","pages":"Page 8"},"PeriodicalIF":1.4,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142423451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mette Faurholdt Gude , Rikke Hjortebjerg , Mette Bjerre , Anne Kathrine Nissen Pedersen , Claus Oxvig , Lars Melholt Rasmussen , Jan Frystyk , Lasse Steffensen
{"title":"The pro-atherogenic enzyme PAPP-A is active in eluates from human carotid and femoral atherosclerotic plaques","authors":"Mette Faurholdt Gude , Rikke Hjortebjerg , Mette Bjerre , Anne Kathrine Nissen Pedersen , Claus Oxvig , Lars Melholt Rasmussen , Jan Frystyk , Lasse Steffensen","doi":"10.1016/j.athplu.2024.09.001","DOIUrl":"10.1016/j.athplu.2024.09.001","url":null,"abstract":"<div><h3>Background</h3><p>Pregnancy-associated plasma protein-A (PAPP-A) regulates bioavailability of insulin-like growth factor 1 (IGF1) in various tissues by proteolytic cleavage of a subset of IGF-binding proteins (IGFBPs). Pre-clinical studies have established a role of PAPP-A in atherosclerosis and proposed that targeting the proteolytic activity of PAPP-A has therapeutic value.</p><p>This study aimed to investigate whether human atherosclerotic plaques contain proteolytically active PAPP-A, a prerequisite for further considering PAPP-A as a therapeutic target in patients.</p></div><div><h3>Methods</h3><p>We obtained carotid (<em>n</em> = 9) and femoral (<em>n</em> = 11) atherosclerotic plaques from patients undergoing vascular surgery and incubated freshly harvested plaque tissue in culture media for 24 h. Subsequently, conditioned media were assayed for PAPP-A, STC2, IGFBP4, and IGF1 using immunoassays. Enzymatic activity of PAPP-A was assessed by its ability to process recombinant IGFBP4-IGF1 complexes - a specific substrate of PAPP-A - by Western blotting.</p></div><div><h3>Results</h3><p>PAPP-A and STC2 were detectable in conditioned media from both carotid and femoral plaques, with higher STC2 concentrations in eluates from carotid plaque incubations (<em>p</em> = 0.02). IGFBP4 and IGF1 were undetectable. Conditioned media from all 20 plaques exhibited PAPP-A proteolytic activity. However, no correlation between PAPP-A concentration and its proteolytic activity was observed, whereas the PAPP-A: STC2 molar ratio correlated with PAPP-A activity (R<sup>2</sup> = 0.25, <em>p</em> = 0.03).</p></div><div><h3>Conclusion</h3><p>This study provides evidence for the presence of enzymatically active PAPP-A in atherosclerotic plaques and underscores the need for further investigating potential beneficial effects associated with targeting PAPP-A in atherosclerotic cardiovascular disease.</p></div>","PeriodicalId":72324,"journal":{"name":"Atherosclerosis plus","volume":"57 ","pages":"Pages 30-36"},"PeriodicalIF":1.4,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667089524000415/pdfft?md5=f8b0f80011afbf4438f5553d4df43beb&pid=1-s2.0-S2667089524000415-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142163577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ketogenic diet and extreme hypercholesterolaemia: A case of polygenic hypercholesteroalemia","authors":"T. Mazaheri , A. David , B. Jones , J.Cegla","doi":"10.1016/j.athplu.2024.08.007","DOIUrl":"10.1016/j.athplu.2024.08.007","url":null,"abstract":"","PeriodicalId":72324,"journal":{"name":"Atherosclerosis plus","volume":"57 ","pages":"Pages 8-9"},"PeriodicalIF":1.4,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142423452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Elgerray ∗ , A. Bruce , C. Saddington , L. Kayali , K. Smith , H. Divyateja
{"title":"A New Diagnosis of Familial Chylomicronaemia Syndrome in a 15-Year-Old Male: From Lab to Clinic","authors":"S. Elgerray ∗ , A. Bruce , C. Saddington , L. Kayali , K. Smith , H. Divyateja","doi":"10.1016/j.athplu.2024.08.004","DOIUrl":"10.1016/j.athplu.2024.08.004","url":null,"abstract":"","PeriodicalId":72324,"journal":{"name":"Atherosclerosis plus","volume":"57 ","pages":"Page 7"},"PeriodicalIF":1.4,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142416451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Llewellyn , M. Simmonds , D. Marshall , M. Harden , B. Woods , S.E. Humphries , U. Ramaswami , L. Priestley-Barnham , M. Fisher , L. Tata , N. Qureshi.
{"title":"Efficacy and safety of statins, ezetimibe and statins-ezetimibe therapies for children and adolescents with heterozygous familial hypercholesterolaemia: Systematic review, pairwise and network meta-analyses of randomised controlled trials","authors":"A. Llewellyn , M. Simmonds , D. Marshall , M. Harden , B. Woods , S.E. Humphries , U. Ramaswami , L. Priestley-Barnham , M. Fisher , L. Tata , N. Qureshi.","doi":"10.1016/j.athplu.2024.08.017","DOIUrl":"10.1016/j.athplu.2024.08.017","url":null,"abstract":"","PeriodicalId":72324,"journal":{"name":"Atherosclerosis plus","volume":"57 ","pages":"Pages 2-3"},"PeriodicalIF":1.4,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142423458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}