New data from NIH lab confirms protocol to reverse type 1 diabet...( cells were the source of at least some...)

New data from NIH lab confirms protocol to reverse type 1 diabetes in mice

cells were the source of at least some of the regenerated islet cell and hastened the restoration of blood sugar levels.

The direct contribution of spleen cells to islet recovery, first described in the 2003 study, is confirmed in the current work. NIH researchers used cell lineage tracking in the form of Y-chromosomal fluorescence in situ hybridization (FISH), in combination with insulin staining, to follow the fate of male spleen cells transplanted into female recipients. The female mice that received male donor cells consistently showed Y-chromosome-positive insulin-producing islet cells, indicating that the introduced spleen cells contribute to islet recovery. The current study also showed that the degree of spleen cell contribution is influenced by mouse age at the start of treatment. Spleen cells appear to contribute to islet recovery more in mice who are older and with more advanced diabetes compared with younger mice with less advanced diabetes, in which regeneration of remaining islets may be the dominant mechanism.

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Contact: Sue McGreevey
smcgreevey@partners.org
617-724-2764
Massachusetts General Hospital
23-Nov-2006

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New data from NIH lab confirms protocol to reverse type 1 diabet...( cells were the source of at least some...),Health