Abstract
Elevated levels of DDT and other organochlorine pesticides have been associated with spontaneous abortion and preterm birth in several species, including humans. Despite the prevalence of organochlorine pesticides in the environment, a mechanistic basis for this association has not been explored. Furthermore, while DDT has been associated with inhibition of calcium ATPases, altered gap junctional communication and electrophysiological changes, all of which could affect the excitation-contraction process characteristic of smooth muscle, direct effects of DDT on uterine smooth muscle have not been reported. This study was initiated to assess the direct effects of o,p{prime}-DDT (an estrogenic isomer present in the technical grade preparation) on pregnant rat uterine tissue.
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