Search for dissertations about: "oviduct"

Showing result 1 - 5 of 9 swedish dissertations containing the word oviduct.

  2. 1. Seminal Influence on the Oviduct : Mating and/or semen components induce gene expression changes in the pre-ovulatory functional sperm reservoir in poultry and pigs

    Author : Mohammad Atikuzzaman; Heriberto Rodriguez-Martinez; Dominic Wright; Karl-Eric Magnusson; Maria Jenmalm; Matthias Laska; Patrice Humblot; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Seminal plasma; proteome peptidome; oviduct; gene expression; chicken; pig;

    Abstract : Internal fertilization occurs in birds and eutherian mammals. Foetal development, however, is either extra- respectively intra-corpore (egg vs uterus). READ MORE

  4. 2. Developmental and Reproductive Toxicity of Progestagens in the Xenopus (Silurana) tropicalis Test System

    Author : Moa Säfholm; Cecilia Berg; Ingvar Brandt; Jan Olsson; Louis Guillette; Uppsala universitet; []
    Keywords : Xenopus tropicalis; sex organ differentiation; oogenesis; fertility; ovary; oviduct; progestagens; Biologi med inriktning mot ekotoxikologi; Biology with specialization in Environmental Toxicology;

    Abstract : Progestagenic compounds are emerging contaminants found in surface and ground water around the world. Information on the effects and potency of progestagens is needed in order to understand the environmental risks posed by these compounds. READ MORE

  5. 3. Endocrine Disruption in Amphibians : Developmental Effects of Ethynylestradiol and Clotrimazole on the Reproductive System

    Author : Irina Gyllenhammar; Cecilia Berg; Ingvar Brandt; Lena Holm; Joakim Larsson; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Test system; Xenopus tropicalis; Rana temporaria; sex ratio; sex differentiation; fertility; aromatase; ovary; testis; oviduct; Biology; Biologi;

    Abstract : Amphibian populations are declining world-wide and one of the suggested reasons is environmental pollutants. Studies of long-term effects on the reproductive system in frogs following larval exposure to environmental pollutants are scarce. It is therefore important to develop methods to study developmental reproductive toxicity in amphibians. READ MORE

  6. 4. The porcine endosalpinx at different reproductive stages : morphology, immune cell infiltration and cytokine expression

    Author : Jatesada Jiwakanon; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Fertilization takes place in the lower part of the porcine oviduct and to be successful, a balance between immunological tolerance to allogeneic differences and immune reactivity to foreign pathogens is required. The thesis aims to describe immune cells and morphological changes in different segments [isthmus (Isth), ampulla (Amp) and infundibulum (Inf)] of the porcine oviduct at various stages of the oestrous cycle, after artificial insemination (AI, pre- and post-ovulatory) and during early pregnancy. READ MORE

  7. 5. Environmental pollutants and the reproductive system in birds : Developmental effects of estrogenic compounds

    Author : Cecilia Berg; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Avian embryo; test system; xeno-estrogen; endocrine disruption; reproductive organ differentiation; oviduct; testis; Utvecklingsbiologi; Developmental biology; Utvecklingsbiologi; Ecotoxicology; ekotoxikologi;

    Abstract : A number of environmental pollutants have been shown to mimick the action of the female sex hormone estrogen and are, therefore, suspected to be responsible for reproductive abnormalities seen in wildlife. Test systems which can be used in hazard and risk assessment of chemicals with estrogenic effects are consequently needed. READ MORE