Diabetes is a chronic metabolic disorder characterized by hyperglycemia and associated with many health complications due to the long-term damage and dysfunction of various organs. A consequential complication of diabetes in men is reproductive dysfunction, reduced fertility, and poor reproductive outcomes. However, the molecular mechanisms responsible for diabetic environment-induced sperm damage and overall decreased reproductive outcomes are not fully established. We evaluated the effects of type 2 diabetes exposure on the reproductive system and the reproductive outcomes of males and their male offspring, using a mouse model. We demonstrate that paternal exposure to type 2 diabetes mediates intergenerational and transgenerational effects on the reproductive health of the offspring, especially on sperm quality, and on metabolic characteristics. Given the transgenerational impairment of reproductive and metabolic parameters through two generations, these changes likely take the form of inherited epigenetic marks through the germline. Our results emphasize the importance of improving metabolic health not only in women of reproductive age, but also in potential fathers, in order to reduce the negative impacts of diabetes on subsequent generations.

Department of Internal Medicine 2nd Faculty of Medicine Charles University Prague and Motol University Hospital Prague Czechia

Laboratory of Molecular Pathogenetics Institute of Biotechnology Czech Academy of Sciences Vestec Czechia

Laboratory of Reproductive Biology Institute of Biotechnology Czech Academy of Sciences Vestec Czechia

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$a Zatecka, Eva $u Laboratory of Reproductive Biology, Institute of Biotechnology Czech Academy of Sciences (CAS), Biotechnology and Biomedicine Center of the Academy of Sciences and Charles University in Vestec (BIOCEV), Vestec, Czechia

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$a The Transgenerational Transmission of the Paternal Type 2 Diabetes-Induced Subfertility Phenotype / $c E. Zatecka, R. Bohuslavova, E. Valaskova, H. Margaryan, F. Elzeinova, A. Kubatova, S. Hylmarova, J. Peknicova, G. Pavlinkova

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$a Diabetes is a chronic metabolic disorder characterized by hyperglycemia and associated with many health complications due to the long-term damage and dysfunction of various organs. A consequential complication of diabetes in men is reproductive dysfunction, reduced fertility, and poor reproductive outcomes. However, the molecular mechanisms responsible for diabetic environment-induced sperm damage and overall decreased reproductive outcomes are not fully established. We evaluated the effects of type 2 diabetes exposure on the reproductive system and the reproductive outcomes of males and their male offspring, using a mouse model. We demonstrate that paternal exposure to type 2 diabetes mediates intergenerational and transgenerational effects on the reproductive health of the offspring, especially on sperm quality, and on metabolic characteristics. Given the transgenerational impairment of reproductive and metabolic parameters through two generations, these changes likely take the form of inherited epigenetic marks through the germline. Our results emphasize the importance of improving metabolic health not only in women of reproductive age, but also in potential fathers, in order to reduce the negative impacts of diabetes on subsequent generations.

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$a Bohuslavova, Romana $u Laboratory of Molecular Pathogenetics, Institute of Biotechnology Czech Academy of Sciences (CAS), Biotechnology and Biomedicine Center of the Academy of Sciences and Charles University in Vestec (BIOCEV), Vestec, Czechia

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$a Valaskova, Eliska $u Laboratory of Reproductive Biology, Institute of Biotechnology Czech Academy of Sciences (CAS), Biotechnology and Biomedicine Center of the Academy of Sciences and Charles University in Vestec (BIOCEV), Vestec, Czechia

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$a Elzeinova, Fatima $u Laboratory of Reproductive Biology, Institute of Biotechnology Czech Academy of Sciences (CAS), Biotechnology and Biomedicine Center of the Academy of Sciences and Charles University in Vestec (BIOCEV), Vestec, Czechia

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$a Hylmarova, Simona $u Laboratory of Molecular Pathogenetics, Institute of Biotechnology Czech Academy of Sciences (CAS), Biotechnology and Biomedicine Center of the Academy of Sciences and Charles University in Vestec (BIOCEV), Vestec, Czechia $u Department of Internal Medicine, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague, Czechia

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$a Peknicova, Jana $u Laboratory of Reproductive Biology, Institute of Biotechnology Czech Academy of Sciences (CAS), Biotechnology and Biomedicine Center of the Academy of Sciences and Charles University in Vestec (BIOCEV), Vestec, Czechia

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$a Pavlinkova, Gabriela $u Laboratory of Molecular Pathogenetics, Institute of Biotechnology Czech Academy of Sciences (CAS), Biotechnology and Biomedicine Center of the Academy of Sciences and Charles University in Vestec (BIOCEV), Vestec, Czechia

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