{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"institution":[{"name":"bioRxiv"}],"indexed":{"date-parts":[[2026,1,21]],"date-time":"2026-01-21T20:25:56Z","timestamp":1769027156892,"version":"3.49.0"},"posted":{"date-parts":[[2024,12,29]]},"group-title":"Physiology","reference-count":81,"publisher":"openRxiv","license":[{"start":{"date-parts":[[2024,12,29]],"date-time":"2024-12-29T00:00:00Z","timestamp":1735430400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"accepted":{"date-parts":[[2025,3,1]]},"abstract":"<jats:title>Summary<\/jats:title>\n                <jats:p>\n                  The loss of insulin secretory function associated with type 1 diabetes (T1D) is attributed to the immune-mediated destruction of beta cells. Yet, at onset of T1D, patients often have a significant beta cell mass remaining while T cell infiltration of pancreatic islets is sporadic. Thus, we investigated the hypothesis that the remaining beta cells in T1D are largely dysfunctional using live human pancreas tissue slices prepared from organ donors with recently diagnosed T1D. Beta cells in slices from donors with T1D had significantly diminished Ca\n                  <jats:sup>2+<\/jats:sup>\n                  mobilization and insulin secretion responses to glucose. Beta cell function was equally impaired in T cell-infiltrated and non-infiltrated islets. Fixed tissue staining and gene expression profiling of laser-capture microdissected islets revealed significant decreases of proteins and genes in the glucose stimulus secretion coupling pathway. From these data, we posit that functional defects occur in the remaining mass of beta cells during human T1D pathogenesis.\n                <\/jats:p>","DOI":"10.1101\/2024.12.29.630665","type":"posted-content","created":{"date-parts":[[2024,12,30]],"date-time":"2024-12-30T02:10:26Z","timestamp":1735524626000},"source":"Crossref","is-referenced-by-count":8,"title":["Beta cell dysfunction occurs independently of insulitis in type 1 diabetes pathogenesis"],"prefix":"10.64898","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2031-0116","authenticated-orcid":false,"given":"Mollie K.","family":"Huber","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Adrienne E.","family":"Widener","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9060-6326","authenticated-orcid":false,"given":"Alexandra 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