Butyrate is one of the main short chain fatty acids SCFAs in the gut and has anti inflammatory properties, is a major energy source for colonocytes, and its absence causes autophagy of epithelial intestinal cells in germ free mice 85, 86 propecia 1 mg The role of TSH R antigenic stimulation is also suggested by triggering of Graves disease by treatment of non toxic goiter with large doses of 131I, which releases antigens from the thyroid, with some patients developing typical ophthalmopathy 78