In intact erythrocytes from normal adults, acetaldehyde, besides inducing metabolite modifications otherwise observed, markedly decreases the glucose 1,6-bis-phosphate (G1,6P2) level. Pyruvate rapidly reverses the acetaldehyde effects. Also in vivo, the acetaldehyde that occurs in the blood stream after heavy alcohol intake produces a significant decrease of the erythrocyte G1,6P2 concentration. These changes support the role of 1,3-bisphosphoglycerate as the first substrate in the G1,6P2 synthesis. The significance of the glucose bisphosphate as glycolytic modulator is also discussed.
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© 1984 S. Karger AG, Basel
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