alexa Burn-induced red blood cell deformability and shape changes are modulated by sex hormones.
Medicine

Medicine

Anatomy & Physiology: Current Research

Author(s): Zaets SB, Berezina TL, Xu DZ, Lu Q, Ricci J

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BACKGROUND: Burns are known to cause changes in red blood cell (RBC) deformability and resting shape. However, it is unclear whether sex and sex hormones can influence the severity of these alterations. METHODS: Red blood cell deformability and shape were examined in proestrus and diestrus female rats, ovariectomized female rats, as well as castrated and non-castrated male rats (6 animals per group) subjected to scald burn. Red blood cell deformability was measured by laser ektacytometry and erythrocyte shape was evaluated by scanning electron microscopy. RESULTS: Burn-induced RBC deformability changes (decrease in elongation index) and shape alterations (increase in the percentage of reversibly and irreversibly changed cells) were less severe in proestrus females than in diestrus females or males. Ovariectomized rats demonstrated more severe RBC changes than non-ovariectomized ones. The degree of RBC damage was the same in castrated and non-castrated males. CONCLUSIONS: Removal of female sex hormones increases the severity of burn-induced RBC, indicating that female sex hormones protect against burn-induced RBC dysfunction. In contrast, male sex hormones do not appear to modulate burn-induced RBC dysfunction.

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This article was published in Am J Surg and referenced in Anatomy & Physiology: Current Research

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