The effect of maternal hypercholesterolemia on the placenta and fetal arteries in rabbits

Acta Cirurgica Brasileira

Elemara Frantz¹  Honório Sampaio Menezes²  Kellyn Cristine Lange¹  Milena Pacheco Abegg¹  Cora Albrecht Correa¹  Leoni Zangalli¹  Jefferson Luís Vieira¹  Cláudio Galeano Zettler¹ 

[1] ,FUCPorto Alegre RS ,Brazil

关键词: Dyslipidemias;    Cholesterol;    Collagen;    Rabbits;    Dislipidemias;    Colesterol;    Colágeno;    Coelhos;   

DOI  :  10.1590/S0102-86502012000100002

来源: SciELO

【 摘 要 】

PURPOSE: To investigate the degree of placental permeability in dyslipidemic rabbits and the consequent vascular dysfunction in fetuses of female rabbits with high lipoprotein levels. METHODS: Fifteen adult females New Zealand White rabbits were divided into two groups. Group 1(n=5) - hypercholesterolemic diet with 0.5% cholesterol, and Group 2 (n=10) - control. On day 30, the levels of plasma lipoproteins and triglycerides were analyzed in the mothers, and the presence of collagen was analyzed in the placenta as well as in fetal coronary and aorta. Statistical analyses used the Student's t and the Mann-Whitney tests. RESULTS: Lipoprotein levels were significantly different (p=0.02 to p<0.001) in experimental and control groups. In the hypercholesterolemic group, total cholesterol levels were in average 793mg/dl; triglycerides were in average 257mg/dl; HDL-C was 48mg/dl, and LDL-C was in average 692mg/dl. The amount of collagen per micrometers square (mµ²) in samples from hypercholesterolemic animals was significantly higher than in the control group. CONCLUSIONS: The study confirmed placental permeability to lipoproteins, shown by increased amounts of collagen in fetal tissues. This alteration results in increased susceptibility to atherosclerosis in adult life, representing a risk factor for the early development of disease, which may appear even in the prenatal period.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License