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| Content Provider | PubMed Central |
|---|---|
| Author | Francesco, Dotta Stefano, Censini Halteren, Astrid G. S. Van Marselli, Lorella Masini, Matilde Dionisi, Sabrina Mosca, Franco Boggi, Ugo Muda, Andrea Onetti Prato, Stefano Del Elliott, John F. Covacci, Antonello Rino, Rappuoli Roep, Bart O. Marchetti, Piero |
| Copyright Year | 2007 |
| Abstract | Type 1 diabetes is characterized by T cell-mediated autoimmune destruction of pancreatic β cells. Several studies have suggested an association between Coxsackie enterovirus seroconversion and onset of disease. However, a direct link between β cell viral infection and islet inflammation has not been established. We analyzed pancreatic tissue from six type 1 diabetic and 26 control organ donors. Immunohistochemical, electron microscopy, whole-genome ex vivo nucleotide sequencing, cell culture, and immunological studies demonstrated Coxsackie B4 enterovirus in specimens from three of the six diabetic patients. Infection was specific of β cells, which showed nondestructive islet inflammation mediated mainly by natural killer cells. Islets from enterovirus-positive samples displayed reduced insulin secretion in response to glucose and other secretagogues. In addition, virus extracted from positive islets was able to infect β cells from human islets of nondiabetic donors, causing viral inclusions and signs of pyknosis. None of the control organ donors showed signs of viral infection. These studies provide direct evidence that enterovirus can infect β cells in patients with type 1 diabetes and that infection is associated with inflammation and functional impairment. |
| Related Links | http://dx.doi.org/10.1073/pnas.0700442104 |
| Ending Page | 5120 |
| Page Count | 6 |
| Starting Page | 5115 |
| File Format | |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 12 |
| Volume Number | 104 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2007-03-20 |
| Access Restriction | Open |
| Rights Holder | National Academy of Sciences |
| Subject Keyword | General Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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