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Endocrinol. nutr. (Ed. impr.) ; 55(supl.1): 63-68, ene. 2008. ilus
Article in Spanish | IBECS | ID: ibc-61175

ABSTRACT

La exposición humana a compuestos químicos que interfieren con la homeostasis hormonal es bien conocida, a pesar de que la evidencia sea muy desigual para los distintos sistemas hormonales. Mientras que la disrupción endocrina de los esteroides (estrógenos y andrógenos) ha merecido gran atención, la de la homeostasis de las hormonas tiroideas está mal entendida, si se exceptúa lo que se refiere a la captación de yodo. La lista de disruptores endocrinos que interfieren con la síntesis, la circulación, la unión a receptores específicos, el metabolismo y la degradación de las hormonas tiroideas crece día a día. A los bifenilospoliclorados (PCB), las dioxinas y los furanos, se unen ahora los compuestos bromados retardadores de la llama, los bisfenoles y losftalatos. Cambios sutiles en las concentraciones de las hormonas tiroideas pueden ocasionar efectos adversos en períodos esenciales del desarrollo, de tal manera que se empieza a ver los efectos de tal exposición ahora, una vez que los mecanismos que ligan hormonastiroideas y neurodesarrollo son cada vez más evidentes ( AU)


Human exposure to environmental chemicals that disrupt endocrine homeostasis has been related to several hormone systems. Sex hormones (estrogen sand androgens) have received special attention, but thyroid hormone disruption is not so well known except in the special case of iodine intake deficiency. The list of chemicals that alter synthesis, circulation, binding to specific receptors, metabolism and degradation of thyroid hormones increases daily. Brominated flameretardants, bisphenols and phthalates are now included alongside polychlorinated biphenyls (PCBs), dioxins and furans. Subtle changes in circulating thyroid hormones may have undesirable effects during development. As our understanding of the role of thyroid hormones in neurodevelopment improves, exposure to environmental thyroid disruptors becomes a matter of increasing concern (AU)


Subject(s)
Humans , Male , Female , Security Measures/standards , Security Measures/trends , Environmental Health/methods , Environmental Health/trends , Endocrine Disruptors/chemistry , Endocrine Disruptors/pharmacology , Endocrine Disruptors/therapeutic use , Environmental Exposure/analysis , Environmental Exposure/prevention & control , Environmental Health/standards , Endocrine Disruptors/administration & dosage , Endocrine Disruptors/chemical synthesis , Endocrine Disruptors/pharmacokinetics , Endocrine Disruptors/supply & distribution , Homeostasis , Homeostasis/physiology , Thyroid Hormones/metabolism , Environmental Pollutants/pharmacology
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