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Effect of Type 2 diabetes on the mouse reproductive parametres
Stiborová, Martina ; Pěknicová, Jana (advisor) ; Nagyová, Eva (referee)
Infertility is defined as an inability to conceive a child within one year of regular sexual intercourse. It affects up to 15 % of couples worldwide (WHO, 2010). The male factor contributes to the total infertility with more than 50 %. Fertility of a man is influenced by several factors such as genetic background, environment and various diseases such as diabetes mellitus (DM). Diabetes mellitus is a serious health problem that affects 451 million people worldwide (18-99 years) and the number of people with this disease still increases (Cho a spol., 2018). In addition, parenthood is postponed to middle age when the fertility decreases and metabolic diseases such as type 2 diabetes mellitus (DM2) appear. The aim of this thesis was to investigate the effect of type 2 diabetes on reproductive parameters of mouse inbred line C57BL/6J compared to the control group and the possible effect of paternal diabetes on the first filial generation. In the evaluation of the effect of DM2 on reproductive parameters, we used innovative methods to study internal state of sperm and testes. Results of our work showed that DM2 influenced the weight of body, prostate and liver. The weight of testes, epididymis and liver was reduced in the offspring. Furthermore, sperm morphology and intraacrosomal protein status were...
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Immunological causes of male infertility
Stiborová, Martina ; Brynychová, Iva (advisor) ; Dostálová, Pavla (referee)
Infertility is defined as the inability to persuade a child after one year of regular unprotected contact, occurs in about 15% of partner couples. In addition to genetic, anatomical, hormonal and infectious causes, the importance of immunopathological mechanisms that contribute to infertility is 15%. The immune system is designed to protect the body's intrinsic stability and respond to so-called "dangerous" signals that can be induced by sperm as autoantigens for men and alloantigens for woman. A healthy individual has protective mechanisms in place to protect sperm from possible attack of the immune system. Failure of protective mechanisms and the natural immune system can result in antibodies against sperm. Antibodies against sperm proteins negatively affect sperm fertilization and are one of the main causes of infertility. This paper describes the possible occurrence of anti-sperm antibodies in both sexes. It also describes the development of sperm, immunological properties of the male and female sexual tract, and briefly summarizes the properties of anti-sperm antibodies and the treatment of immunological infertility. Key words: Reproduction, infertility, sperm cells, antisperm antibodies, autoimmunity
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