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Abstract Title:

Estrogenic effects of p-hydroxybenzoic acid in CD1 mice.

Abstract Source:

Environ Res. 1997 Nov;75(2):130-4. PMID: 9417843

Abstract Author(s):

C Lemini, G Silva, C Timossi, D Luque, A Valverde, M González-Martínez, A Hernández, C Rubio-Póo, B Chávez Lara, F Valenzuela

Article Affiliation:

Departamento de Farmacología, Facultad de Medicina, UNAM, Ciudad Universitaria, Mexico.

Abstract:

Xenobiotic estrogens in the environment or diet have received much attention as a possible source of certain hormonal disease states in human and wildlife. Therefore, the detection of estrogenic activity of any substance, especially those related to the food industry, is important. The estrogenic activity of p-hydroxybenzoic acid (PHBA), a compound related to a commonly used group of preservatives in food, cosmetic, and pharmaceutical preparations, was evaluated with immature and adult ovariectomized female mice (CD1) using two well-known bioassays. Subcutaneous administrations (s.c.) of different doses of PHBA were compared with estradiol (E2), and their effects on vaginal cornification and uterotrophic activities were evaluated. Different groups of animals were treated s.c. daily for 3 days with vehicle (corn oil, 0.3 ml/100 g), E2 (1 microgram/100 g), and PHBA (0.5, 5, 50, and 500 micrograms/100 g). Four days after treatment, PHBA produced a dose-dependent response on vaginal cornification and uterotrophic activity in both immature and adult ovariectomized mice. The relative uterotrophic potency of PHBA (500 micrograms/100 g) to E2 (1 microgram/100 g) was 0.0011 in immature mice and 0.0018 in ovariectomized animals.

Study Type : Animal Study
Additional Links
Problem Substances : Parabens : CK(101) : AC(29)

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