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Visar resultat 1 - 5 av 39 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Sperm Membrane Channels, Receptors and Kinematics : Using boar spermatozoa for drug toxicity screening

    Författare :Alejandro Vicente Carrillo; Heriberto Rodríguez-Martínez; Karl-Eric Magnusson; Rudolf Rigler; Vesa Loitto; Stefan Arver; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Plasma membrane; membrane channels; membrane receptors; kinematics; 3Rprinciples; spermatozoa; boar.;

    Sammanfattning : Internal fertilization usually implies that a spermatozoon, with intact attributes for zygote formation, passes all hurdles during its transport through the female genitalia and reaches the oocyte. During this journey, millions to billions of other spermatozoa perish. LÄS MER

  3. 2. GABA and human spermatozoa : characterization and regulation of GABA transport proteins

    Författare :Arthur Aanesen; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :GABA; spermatozoa; GABA transport; acrosome reaction; sperm motility; progesterone; protein kinase C; GAT-1; GAT-2; GAT-3; BGT-1;

    Sammanfattning : The present project aimed at investigating the interaction between GABA and human spermatozoa under in vitro conditions. Our initial hypothesis was that human spermatozoa had specific binding proteins for GABA and that the binding of GABA to such binding sites could affect sperm function. LÄS MER

  4. 3. Perspectives on the Biological Role of Human Prostasomes

    Författare :Lena Carlsson; Outi Hovatta; Uppsala universitet; []
    Nyckelord :Medical sciences; Prostasomes; cryopreservation; human spermatozoa; sperm motility; anti- prostasome antibodies; PC-3 cells; Bacillus megaterium; antibacterial; antisperm antibodies; complement activation; sperm agglutination; infertility; MEDICIN OCH VÅRD; MEDICINE; MEDICIN; Clinical Chemistry; klinisk kemi;

    Sammanfattning : Prostasomes are extracellularly occurring organelles which are secreted in human semen by the prostate gland. Prostasomes have several known biological activities, but their physiological function is still unclear. In this thesis some new aspects were studied on the biological role of the prostasomes. LÄS MER

  5. 4. Osmotic behaviour, membrane permeability and mobility mechanisms in bull spermatozoa

    Författare :Lars-Owe Drevius; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  7. 5. Equine seminal plasma: its role in protecting stallion spermatozoa during cryopreservation

    Författare :Essraa M Al-Essawe; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : There is considerable variability in the ability of spermatozoa from different stallions to withstand the freezing process. As a result, stallions are usually categorized as good or bad freezers. LÄS MER