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Histochemical localization and concentration of copper released from a CuIUD in the endometria of rabbits

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Advances in Contraception

Abstract

Atomic absorption spectrophotometry and histochemistry have been employed to study the content and localization of copper released from a CuIUD in the endometrium of rabbits bearing the copper device for 30 days. The released copper was mainly accumulated in the luminal and glandular epithelial cytoplasm. However, if the succession of the epithelia was imperfect due to the impairment by the device, copper could be detected in the stroma cells, which appeared to be neutrophilic leukocytes or lymphocytes. The mean concentration of copper in the uterine tissue of the CuIUD-bearing horn (82.24 μg/g dry weight) was significantly higher than that of the contralateral one (14.48 μg/g dry weight), and also tended to be higher than that of the horn bearing the stainless steel device (32.97 μg/g dry weight) and its contralateral horn (18.03 μg/g dry weight).

Resumé

On a étudié par spectrophotométrie d'absorption atomique et histo-chimie la quantité et al localisation du cuivre libéré par un DIU au cuivre dans l'endomètre de lapines portant ce dispositif pendant 30 jours. Le cuivre libéré était principalement concentré dans le cytoplasme de l'épithélium cavitaire et glandulaire. Toutefois, si la continuité de l'épithélium n'était pas parfaite, par suite d'une atteinte par le dispositif, le cuivre pouvait être décelé dnas les cellules du stroma, qui semblaient être des leucocytes neutrophiles ou des lymphocytes. La concentration moyenne de cuivre dans le tissu utérin provenant de la corne portant le DIU au cuivre (82.24 μg/g poids sec) était significativement plus élevée que celle de l'élément controlatéral du dispositif (14.48 μg/g poids sec) et avait également tendance à être plus élevée que celle de la corne portant le dispositif en acier inoxydable (39.97 μg/g poids sec) et de sa corne controlatérale (18.03 μg/g poids sec).

Resumen

Espectofotometría de absorción atómica e histoquímica fueron utilizadas para estudiar el contenido y la localización del cobre liberado por un DIU con cobre en el endometrio de conejas con el dispositivo durante 30 días. El cobre liberado se acumuló principalmente en el lumen y en el citoplasma del epitelio glandular. Sin embargo, si la integridad del epitelio estaba imperfecta debido a la presencia del dispositivo, el cobre podía ser detectado en células des estroma que parecían ser leucocitos neutrófilos o linfocitos. La concentración media de cobre en el tejido del cuerno uterino con el DIU con cobre (82.24 μg/g peso seco) fué significativamente mas alta que la del opuesto (14.48 μg/g peso seco) y también tendía a ser mas alta que la del cuerno con el dispositivo de acero inoxidable (32.97 μg/g peso seco) y su cuerno opuesto (18.03 μg/g peso seco).

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Liu, Y.G., Wu, X.R., Wang, G.Z. et al. Histochemical localization and concentration of copper released from a CuIUD in the endometria of rabbits. Adv Contracept 4, 287–293 (1988). https://doi.org/10.1007/BF01849270

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  • DOI: https://doi.org/10.1007/BF01849270

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