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Adiponectin values are unchanged during pregnancy in rats

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Abstract

Adiponectin is believed to be a key factor in determining insulin sensitivity. In turn, insulin sensitivity is known to change from an enhanced state in early pregnancy to a reduced one in late pregnancy. A role for adiponectin in these changes has been proposed for mice but questioned for humans. We addressed this issue in rats by measuring adiponectin expression in both visceral and subcutaneous white adipose tissue, together with tissue content and release of the hormone in non-pregnant and in pregnant rats by days 8, 15 and 19 of pregnancy. Plasma concentration was also determined. No differences were found in any of the parameters measured between non-pregnant and pregnant rats at any time of pregnancy despite changes in white adipose tissue mass and insulin sensitivity. Adiponectin was also detected in cerebrospinal fluid at a concentration 1,000 times lower than in plasma, but again no differences were found between non-pregnant and pregnant animals. It is concluded that adiponectin does not play any role in regulating changes in insulin sensitivity during pregnancy in rats.

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Authors and Affiliations

  1. Department of Animal Physiology II, Faculty of Biological Sciences, Complutense University, c/ José Antonio Novais 2, 28040, Madrid, Spain

    S. Caja, M. Torrente, I. Martínez, M. Abelenda & M. Puerta PhD

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  1. S. Caja
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  2. M. Torrente
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  3. I. Martínez
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  4. M. Abelenda
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  5. M. Puerta PhD
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Correspondence to M. Puerta PhD.

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Caja, S., Torrente, M., Martínez, I. et al. Adiponectin values are unchanged during pregnancy in rats. J Endocrinol Invest 28, 609–615 (2005). https://doi.org/10.1007/BF03347259

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