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  • Title: Thiamin deficiency in the lamb: changes in thiamin phosphate esters in the brain.
    Author: Thornber EJ, Dunlop RH, Gawthorne JM.
    Journal: J Neurochem; 1980 Sep; 35(3):713-7. PubMed ID: 7452281.
    Abstract:
    Concentration of thiamin (unphosphorylated), thiamin monophosphate (TMP), thiamin diphosphate (TDP), and thiamin triphosphate (TTP) were measured in three regions of the brain of seven pairs of lambs. The lambs were maintained on a thiamin-free synthetic diet for 2, 3, or 4 weeks. Controls were pair-fed and supplemented with thiamin. The three brain regions were: (1) dorso-lateral aspect of the cortex [common site for lesions of polioencephalomalacia (PEM)]; (2) pyriform lobe of the cortex (no PEM lesions are found here); (3) white matter of the internal capsule (no PEM lesions found here). The concentration of TTP ina ll three sections of brain was maintained at control values for up to 4 weeks on the thiamin-deficient diet. TDP concentration decreased to 22% of control values in both regions of grey matter after 4 weeks on the diet. Unphosphorylated thiamin and TMP decreased to a smaller extent than TDP.
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