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Purpose - to estimate the disorder of spermatogenesis under conditions of experimentalchronic kidney disease (EChD).Material and methods. The study was carried out in two series of experiments on malemice with EChD, the model of which was created by immunizing animals with a kidneyhomogenate. The first series of experiments was devoted to the study of: sperm count(sperm concentration (mln / ml)) and the number of abnormal sperm forms; the ratio ofcells of different generations of spermatogenic epithelium (%) in the testes; pathways ofcell death of cells of the testes and epididymis (spermatocytes (primary) and spermatozoa).The fertile qualities of males were assessed in the second series of experiments, afterreplanting them to intact females. Pre- and post-implantation embryonic mortality andthe number of living fetuses per female mouse have been investigated. The research resultswere compared with the performance of animals in the control groups for each series.Results. No significant changes in the number of spermatozoa were found under EChDconditions (p> 0.05). An increase in the number of abnormal spermatozoa (22%) andthose with primary abnormalities (p <0.05) was found. Among the generations of testescells, a decrease in the number of spermatids and living spermatocytes (primary) (15%)was established, with an increase in the number of cells with apoptosis and necrosisamong them (p <0.05). The number of living cells of the epididymis (spermatozoa) alsodecreased (17.8%), with the growth of cells with apoptosis and necrosis among them (p<0.05). There was an increase in the pre- and post-implantation mortality of embryos (p<0.05); decrease in the number of living fetuses (p <0.05).Conclusions. Under conditions of four-time treatment with renal homogenate (EChD)there is a disorder of spermatogenesis in male mice. Experimental model of kidneydamage, proposed by us, can be useful for studying other aspects and consequences ofkidney pathology, and both for establishment of the features and detection of possiblepathogenetic links in the development of spermatogenesis disorder under conditions ofchronic kidney disease and search of the effective ways to correct it in future.

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