Abstract
It was recently reported that ventromedial hypothalamic lesions change the expression of cell proliferation-related genes and metabolism-related genes in rat pancreatic islets. This study has examined how gene families involved in immune responses are regulated in rat pancreatic islets after VMH lesions formation. Total pancreatic islets RNA was extracted, and differences in the gene expression profiles between rats at day 3 after VMH lesioning and sham-VMH-lesioned rats were investigated using DNA microarray and real-time polymerase chain reaction. VMH lesions downregulated multiple immune signaling pathways in rat pancreatic islets. Real-time polymerase chain reaction also confirmed that gene expressions of RT1 class II, locus Bb (RT1-Bb) was up-regulated and Spi-B transcription factor (Spib) was downregulated at day 3 after the VMH lesions. Ventromedial hypothalamic lesions may change the expression of multiple immune response genes in rat pancreatic islets.
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