Expressão e imunidade das Heat Shock Proteins (HSP) em gestantes portadoras de diabete e hiperglicemia gestacional leve

• Autor(a) principal: Arantes, Mariana Alvarez [UNESP]
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/111036
• topic: Diabetes na gravidez; Proteinas de choque termico; Hiperglicemia; Gravidez - Complicações; Diabetes in pregnancy

Objective The aim of the present study was to compare serum levels of heat shock proteins (hsp) 60, hsp70 and their respective antibodies in maternal serum. Research design and methods In maternal serum at 24-28 and 34-38 weeks gestation and at 6 weeks postpartum from 208 normoglycemic (ND) women and 121 women with mild gestational hyperglycemia (MGH), 55 with gestational diabetes (GDM) and 178 with overt diabetes. hsp60, hsp70, anti-HSP60 and anti-HSP70 levels were quantitated by enzyme-linked immunosorbent assay (ELISA). Results Hsp60 and hsp70 levels were decreased in all three hyperglycemic groups at each time period compared to concentrations in the ND controls. In the ND group, but not in the hyperglycemic mothers, hsp60 levels increased, and hsp70 levels decreased with each successive sample. Anti-HSP60 levels were similar between groups while anti-HSP70 levels were lower in the three hyperglycemic groups than in the ND controls during pregnancy, but not postpartum. Conclusions Circulating hsp60 and hsp70 concentrations are decreased in hyperglycemic women during pregnancy, regardless of the degree of hyperglycemia, compared to ND women. Further studies are warranted to explore the mechanism(s) responsible for these alterations in hsp60 and hsp70 levels in hyperglycemia and consequences for pregnancy outcome