Search Results - "Jewgenow, K."

Cryopreservation of feline oocytes by vitrification using commercial kits and slush nitrogen technique by Fernandez‐Gonzalez, L, Jewgenow, K

“…Contents Assisted reproductive techniques are a valuable tool for conservation breeding of endangered species. Cryopreservation methods are the basis of gamete…”
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Current achievements and future research directions in ovarian tissue culture, in vitro follicle development and transplantation: implications for fertility preservation by Smitz, J., Dolmans, M.M., Donnez, J., Fortune, J.E., Hovatta, O., Jewgenow, K., Picton, H.M., Plancha, C., Shea, L.D., Stouffer, R.L., Telfer, E.E., Woodruff, T.K., Zelinski, M.B.

“…BACKGROUND Female cancer patients are offered ‘banking’ of gametes before starting fertility-threatening cancer therapy. Transplants of fresh and frozen…”
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Role of sex steroids and prostaglandins during the luteal life cycle in domestic cats and lynxes by Braun, B.C., Jewgenow, K.

“…Although lynxes and domestic cats are both felids, their luteal life cycles differ. As in many species, corpora lutea (CLs) of domestic cats regress after…”
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Early preantral follicles of the domestic cat express gonadotropin and sex steroid signaling potential by Kehoe, S, Jewgenow, K, Johnston, P.R, Braun, B.C

“…Key biomolecular processes, which regulate primordial ovarian follicle dormancy and early folliculogenesis in mammalian ovaries, are not fully understood. The…”
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Brilliant cresyl blue staining allows the selection for developmentally competent immature feline oocytes by Jewgenow, K., Fernandez-Gonzalez, L., Jänsch, S., Viertel, D., Zahmel, J.

“…The outcome of in-vitro-maturation and in-vitro-fertilization of feline oocytes depends on the selection of high quality oocytes, and is often restricted to…”
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The antioxidative enzyme SOD2 is important for physiological persistence of corpora lutea in lynxes by Braun, B. C., Halaski, N., Painer, J., Krause, E., Jewgenow, K.

“…Corpora lutea (CL) are transient endocrine glands supporting pregnancy by progesterone production. They develop at the site of ovulation from the remaining…”
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Embryonic gene activation in in vitro produced embryos of the domestic cat (Felis catus) by Waurich, R, Ringleb, J, Braun, B C, Jewgenow, K

“…Accurate embryonic gene activation (EGA) is essential for the embryo's developmental potency and reflects the quality of in vitro produced embryos. To describe…”
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Research on reproduction is essential for captive breeding of endangered carnivore species by Jewgenow, K, Braun, BC, Dehnhard, M, Zahmel, J, Goeritz, F

“…Contents Assisted reproductive technology (ART) has great potential for conservation, but its successful application in captive breeding programmes of…”
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Seasonally different reproductive investment in a medium-sized rodent (Cavia aperea) by Rübensam, K., Hribal, R., Jewgenow, K., Guenther, A.

“…Pronounced seasonal variations in day length, temperature, and resource availability characterize the temperate regions and strongly influence the animals…”
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Expression of steroidogenic enzymes and steroid receptors in foetal gonads of domestic cat—Sex similarities and differences by Braun, BC, Jewgenow, K

“…Contents Foetal gonads already produce steroid hormones and by this influence the further development of external and internal genitalia as well as of the…”
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Model for Hormonal Emergency Contraception (HEC) in cycling and mated guinea pigs – Studies with the Progesterone Receptor Modulators (PRM) Ulipristal Acetate (UPA/CDB2914) and EC317 by Elger, W., Schneider, B., Killeen, Z., Jewgenow, K., Dehnhard, M., Friedrich, M., Santhamma, B., Wedemeyer, R., Nickisch, K.

“…[Display omitted] •Animal model for emergency contraceptives developed.•Designed studies permit assessment of anti-ovulatory and postovulatory contraceptive…”
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Comparative metabolism of PGFM (13,14-dihydro-15-keto-PGF2α) in feces of felids by Dehnhard, M., Naidenko, S.V., Jewgenow, K.

“…Methods for monitoring endocrine activities are useful tools for reproduction management. In particular, captive breeding of endangered felid species is…”
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Using PGFM (13,14-dihydro-15-keto-prostaglandin F2α) as a non-invasive pregnancy marker for felids by Dehnhard, M, Finkenwirth, C, Crosier, A, Penfold, L, Ringleb, J, Jewgenow, K

“…Understanding the complex endocrine interactions that control reproduction in felids is essential for captive breeding management. The most important demand is…”
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Mitochondrial characteristics in oocytes of the domestic cat (Felis catus) after in vitro maturation and vitrification by Sowińska, N, Müller, K, Niżański, W, Jewgenow, K

“…Contents The objective of this study was to evaluate mitochondria in immature and in vitro‐matured domestic cat oocytes and to assess for the first time the…”
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Analysis of gene expression in granulosa cells post‐maturation to evaluate oocyte culture systems in the domestic cat by Zahmel, J, Mundt, H, Jewgenow, K, Braun, BC

“…Contents Maturation of oocytes is a prerequisite for successful embryo development. The fertilization competence of in vivo derived oocytes is significantly…”
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Characterization of fetal growth by repeated ultrasound measurements in the wild guinea pig (Cavia aperea) by Schumann, K., Guenther, A., Göritz, F., Jewgenow, K.

“…Fetal growth during pregnancy has previously been studied in the domesticated guinea pig (Cavia aperea f. porcellus) after dissecting pregnant females, but…”
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Metabolism of prostaglandin F2alpha in Eurasian lynx (Lynx lynx) and Asian leopard cat (Prionailurus bengalensis euptilura) by Dehnhard, M, Naidenko, SV, Jewgenow, K

“…Contents Methods for monitoring endocrine status are useful tools for reproduction management. In particular, successful captive breeding of endangered feline…”
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Moderate Seasonality in Testis Function of Domestic Cat by Blottner, S, Jewgenow, K

“…Contents Adult male domestic cats are known to produce sperm throughout the year, although sexual activity is influenced by geographical location. In the…”
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Expression profiles of relaxin family peptides and their receptors indicate their influence on spermatogenesis in the domestic cat (Felis catus) by Braun, B.C., Müller, K., Jewgenow, K.

“…Disturbed spermatogenesis is a common problem in felines. Studying spermatogenesis in the domestic cat can improve the understanding of the biological…”
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Sequence analysis of feline oviductin and its expression during the estrous cycle in the domestic cat ( Felis catus) by Hachen, A, Jewgenow, K, Braun, B.C

“…Oviductins belong to a family of oviduct-specific glycoproteins believed to play an important role in fertilization and/or early embryonic development…”
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