l-thyroxine appears to specifically block the participation of nadp ( h ) in redox reactions in mitochondria from hypothyroid rats , perhaps by effecting a sequestration of the nucleotide , by inhibiting the pyridine nucleotide transhydrogenase , or by activating an energy-linked process that competes with transhydrogenation .
C0040165
l-thyroxine
C0020676
hypothyroid