{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T07:11:28Z","timestamp":1791443488172,"version":"4.3.3"},"reference-count":53,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"2","license":[{"start":{"date-parts":[[2024,7,5]],"date-time":"2024-07-05T00:00:00Z","timestamp":1720137600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Circulation Research"],"published-print":{"date-parts":[[2024,7,5]]},"abstract":"\n BACKGROUND:<\/jats:title>\n Individuals with type 1 diabetes (T1D) generally have normal or even higher HDL (high-density lipoprotein)-cholesterol levels than people without diabetes yet are at increased risk for atherosclerotic cardiovascular disease (CVD). Human HDL is a complex mixture of particles that can vary in cholesterol content by >2-fold. To investigate if specific HDL subspecies contribute to the increased atherosclerosis associated with T1D, we created mouse models of T1D that exhibit human-like HDL subspecies. We also measured HDL subspecies and their association with incident CVD in a cohort of people with T1D.<\/jats:p>\n <\/jats:sec>\n \n METHODS:<\/jats:title>\n \n We generated LDL receptor\u2013deficient (\n Ldlr<\/jats:italic>\n \n \u2212\/\u2212<\/jats:italic>\n <\/jats:sup>\n ) mouse models of T1D expressing human APOA1 (apolipoprotein A1).\n Ldlr<\/jats:italic>\n \n \u2212\/\u2212<\/jats:italic>\n <\/jats:sup>\n APOA1<\/jats:italic>\n \n Tg<\/jats:italic>\n <\/jats:sup>\n mice exhibited the main human HDL subspecies. We also generated\n Ldlr<\/jats:italic>\n \n \u2212\/\u2212<\/jats:italic>\n <\/jats:sup>\n APOA1<\/jats:italic>\n \n Tg<\/jats:italic>\n <\/jats:sup>\n T1D mice expressing CETP (cholesteryl ester transfer protein), which had lower concentrations of large HDL subspecies versus mice not expressing CETP. HDL particle concentrations and sizes and proteins involved in lipoprotein metabolism were measured by calibrated differential ion mobility analysis and targeted mass spectrometry in the mouse models of T1D and in a cohort of individuals with T1D. Endothelial transcytosis was analyzed by total internal reflection fluorescence microscopy.\n <\/jats:p>\n <\/jats:sec>\n \n RESULTS:<\/jats:title>\n \n Diabetic\n Ldlr<\/jats:italic>\n \n \u2212\/\u2212<\/jats:italic>\n <\/jats:sup>\n APOA1<\/jats:italic>\n \n Tg<\/jats:italic>\n <\/jats:sup>\n mice were severely hyperglycemic and hyperlipidemic and had markedly elevated plasma APOB levels versus nondiabetic littermates but were protected from the proatherogenic effects of diabetes. Diabetic\n Ldlr<\/jats:italic>\n \n \u2212\/\u2212<\/jats:italic>\n <\/jats:sup>\n APOA1<\/jats:italic>\n \n Tg<\/jats:italic>\n <\/jats:sup>\n mice expressing CETP lost the atheroprotective effect and had increased lesion necrotic core areas and APOB accumulation, despite having lower plasma APOB levels. The detrimental effects of low concentrations of larger HDL particles in diabetic mice expressing CETP were not explained by reduced cholesterol efflux. Instead, large HDL was more effective than small HDL in preventing endothelial transcytosis of LDL mediated by scavenger receptor class B type 1. Finally, in humans with T1D, increased concentrations of larger HDL particles relative to APOB100 negatively predicted incident CVD independently of HDL-cholesterol levels.\n <\/jats:p>\n <\/jats:sec>\n \n CONCLUSIONS:<\/jats:title>\n Our results suggest that the balance between APOB lipoproteins and the larger HDL subspecies contributes to atherosclerosis progression and incident CVD in the setting of T1D and that larger HDLs exert atheroprotective effects on endothelial cells rather than by promoting macrophage cholesterol efflux.<\/jats:p>\n <\/jats:sec>","DOI":"10.1161\/circresaha.123.323100","type":"journal-article","created":{"date-parts":[[2024,6,3]],"date-time":"2024-06-03T09:01:08Z","timestamp":1717405268000},"page":"335-349","update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":18,"title":["Imbalance of APOB Lipoproteins and Large HDL in Type 1 Diabetes Drives 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Medicine, Division of Metabolism, Endocrinology and Nutrition, UW Medicine Diabetes Institute (V.K., Y.H., F.K., M.S.-A., J.E.K., B.S., J.W.H., T.V., K.E.B.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3212-772X","authenticated-orcid":true,"given":"Jenny E.","family":"Kanter","sequence":"additional","affiliation":[{"name":"Department of Medicine, Division of Metabolism, Endocrinology and Nutrition, UW Medicine Diabetes Institute (V.K., Y.H., F.K., M.S.-A., J.E.K., B.S., J.W.H., T.V., K.E.B.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9337-3740","authenticated-orcid":true,"given":"Janet","family":"Snell-Bergeon","sequence":"additional","affiliation":[{"name":"Barbara Davis Center for Diabetes, University of Colorado Denver, Aurora (J.S.-B.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Edward 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