高温のビタミンB_1代謝におよぼす影響に関する実験的研究 : (II)高温曝露時の汗中および尿中のビタミンB_1量について

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Thiamine concentration in the sweat and blood, and its daily urinary excretion were estimated with 6 healthy male students exposed to hot environment (42-43℃, 100% humidity) for about 30 minutes. Average thiamine content of 0.24 μg/dl in the sweat indicates that the excretion of the vitamin in the sweat is extraordinary low. The thiamine concentration in the sweat varied with that in the blood plasma. No definite tendency could not be observed in the urinary thiamine level as well as in the urinary excretion of the vitamin in case of the exposure to hot environment. This finding shows that the exposure to hot environment might not promote the excretion of thiamine in the urine.
日本ビタミン学会の論文