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Dynamics of the glycemic profile in women in long-term antiorthostatic hypokinesia

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Abstract

The dynamics of the glycemic curve profile was investigated in 8 healthy women during performance of the glucose tolerance test (GТТ) in 120-day antiorthostatic hypokinesia (–6°) (АNОH) simulating the effects of weightlessness. Glycemic profiles were characterized by more marked hyperglycemic response at 30 min of GТТ in the first month of stay under ANOH conditions and had a flattened appearance three months later. Glycemic profiles characteristic of delayed restoration of the blood glucose concentration appeared in the fourth month, which persisted over the first week after the end of АNОH. The glycemic profile changes developed against the background of the signs of progressive congestion of blood in the venous system of the abdominal cavity. The expansion of diameters of the main veins of the abdominal cavity was noted at the beginning of АNОH; an increase in the size of the organs and the signs of expansion of venous plexuses at the site of portocaval anastomoses, after three months; the occurrence of the signs of transudation and free fluid in the abdominal cavity was revealed at the end of hypokinesia. The countermeasures against hypodynamia did not prevent transformation of the glycemic profile nor did they influence the progression of blood flow congestion in the venous system of the abdominal cavity whose features determined the character changes in the glycemic profile in different periods of ANOH.

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Authors and Affiliations

  1. Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, Russia

    B. V. Afonin

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  1. B. V. Afonin
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Correspondence to B. V. Afonin.

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Original Russian Text © B.V. Afonin, 2016, published in Fiziologiya Cheloveka, 2016, Vol. 42, No. 4, pp. 88–95.

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Afonin, B.V. Dynamics of the glycemic profile in women in long-term antiorthostatic hypokinesia. Hum Physiol 42, 425–431 (2016). https://doi.org/10.1134/S0362119716040022

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