Prof. Dr. Katarina Jewgenow

Senior Research Fellow

  • Reproduktionsbiologie
  • Kryokonservierung von genetischen Ressourcen (Genom-Banking)
  • Gametogenese bei Säugetieren
  • Empfängnisverhütung bei Wildtieren
Ausgewählte Publikationen
  1. Braun BC, Jewgenow K (2022): Role of sex steroids and prostaglandins during the luteal life cycle in domestic cats and lynxes. DOMEST ANIM ENDOCRINOL 78, e106689. doi:10.1016/j.domaniend.2021.106689.
  2. Kehoe S, Jewgenow K, Johnston PR, Braun BC (2022): Early preantral follicles of the domestic cat express gonadotropin and sex steroid signalling potential. BIOL REPROD 106, 95–107. doi:10.1093/biolre/ioab192.
  3. Lee PC, Zahmel J, Jewgenow K, Comizzoli P (2022): Desiccated cat spermatozoa retain DNA integrity and developmental potential after prolonged storage and shipping at non‐cryogenic temperatures. J ASSIST REPROD GENET 39, 141–151. doi:10.1007/s10815-021-02337-4.
  4. Zahmel J, Skalborg Simonsen K, Stagegaard J, Palma‐Vera SE, Jewgenow K (2022): Current state of in vitro embryo production in African lion (Panthera leo). ANIMALS 12, 1424. doi:10.3390/ani12111424.
  5. Azevedo A, Bailey L, Bandeira V, Fonseca C, Wauters J, Jewgenow K (2021): Decreasing glucocorticoid levels toward the expansion front suggest ongoing expansion in a terrestrial mammal. CONSERV PHYSIOL 9, coab050. doi:10.1093/conphys/coab050.
  6. Fernandez‐Gonzalez L, Huebinger J, Jewgenow K (2021): Comparison of different materials for self‐pressurized vitrification of feline oocytes‐first results. ANIMALS 11, 1314. doi:10.3390/ani11051314.
  7. Fernandez‐Gonzalez L, Kozhevnikova V, Brusentsev, Jänsch S, Amstislavsky S, Jewgenow K (2021): IGF‐I medium supplementation improves singly cultured cat oocyte maturation and embryo development in vitro. ANIMALS 11, 1909. doi:10.3390/ani11071909.
  8. Hryciuk MM, Jewgenow K, Braun BC (2021): Cloprostenol, a synthetic analogue of prostaglandin F2α, induces functional regression in cultured luteal cells of felids. BIOL REPROD 105, 137–147. doi:10.1093/biolre/ioab070.
  9. Hryciuk MM, Jewgenow K, Braun BC (2021): Luteinizing hormone effect on luteal cells is dependent on the corpus luteum stage in felids. ANIMALS 11, 179. doi:10.3390/ani11010179.
  10. Kehoe S, Jewgenow K, Johnston PR, Mbedi S, Braun BC (2021): Signalling pathways and mechanistic cues highlighted by transcriptomic analysis of primordial, primary, and secondary ovarian follicles in domestic cat. SCI REP 11, 2683. doi:10.1038/s41598-021-82051-4.
  11. Van der Weijden VA, Bick JT, Bauersachs S, Rüegg AB,Hildebrandt TB, Goeritz F, Jewgenow K, Giesbertz P, Daniel H, Derisoud E, Chavatte‐Palmer P, Bruckmaier RM, Drews B, Ulbrich SE (2021): Amino acids activate mTORC1 to release roe deer embryos from decelerated proliferation during diapause. PROC NATL ACAD SCI USA 118, e2100500118. doi:10.1073/pnas.2100500118.
  12. Colombo M, Zahmel J, Binder C, Herbel J, Luvoni GC, Jewgenow K (2021): Ovary cold storage and shipment affect oocyte yield and cleavage rate of cat immature vitrified oocytes. CRYOBIOLOGY 98, 181–186. doi:10.1016/j.cryobiol.2020.11.003.
  13. Zahmel J, Jänsch S, Jewgenow K, Sandgreen D-M, Skalborg Simonsen K, Colombo M (2021): Maturation and fertilization of African lion (Panthera leo) oocytes after vitrification. CRYOBIOLOGY 98, 146–151. doi:10.1016/j.cryobiol.2020.11.011.
  14. Azevedo A, Wauters J, Kirschbaum C, Serra R, Rivas A, Jewgenow K (2020): Sex steroids and glucocorticoid ratios in Iberian lynx hair. CONSERV PHYSIOL 8, coaa075. doi:10.1093/conphys/coaa075.
  15. Braun BC, Halaski N, Painer J, Krause E, Jewgenow K (2020): The antioxidative enzyme SOD2 is important for physiological persistence of corpora lutea in lynxes. SCI REP 10, 3681. doi:10.1038/s41598-020-60634-x.
  16. Colombo M, Zahmel J, Jänsch S, Jewgenow K, Luvoni GC (2020): Inhibition of apoptotic pathways improves DNA integrity but not developmental competence of domestic cat immature vitrified oocytes. FRONT VET SCI 7, 588334. doi:10.3389/fvets.2020.588334.
  17. Jewgenow K, Azevedo A, Albrecht M, Kirschbaum C, Dehnhard M (2020): Hair cortisol analyses in different mammal species: Choosing the wrong assay may lead to erroneous results. CONSERV PHYSIOL 8, coaa009. doi:10.1093/conphys/coaa009.
  18. Jewgenow K, Zahmel J (2020): Preservation of female genetic resources in feline species. THERIOGENOLOGY 156, 124–129. doi:10.1016/j.theriogenology.2020.06.040.
  19. Sowińska N, Zahmel J, Niżański W, Hribal R, Fernandez-Gonzalez L, Jewgenow K (2020): Meiotic status does not affect the vitrification effectiveness of domestic cat oocytes. ANIMALS 10, 1371. doi:10.3390/ani10081371.
  20. Azevedo A, Bailey LD, Bandeira V, Dehnhard M, Fonseca C, de Sousa L, Jewgenow K (2019): Age, sex and storage time influence hair cortisol levels in a wild mammal population. PLOS ONE 14, e0221124. doi:10.1371/journal.pone.0221124.
  21. Fernandez-Gonzalez L, Müller K, Jewgenow K, Zahmel J (2019): Felid-gamete-rescue within EAZA – efforts and results in biobanking felid oocytes and sperm. J ZOO AQUAR RES 7, 15–24. doi:10.19227/jzar.v7i1.369.
  22. Hryciuk MM, Braun BC, Bailey LD, Jewgenow K (2019): Functional and morphological characterization of small and large steroidogenic luteal cells from domestic cats before and during culture. FRONT ENDOCRINOL 10, 724. doi:10.3389/fendo.2019.00724.
  23. Jewgenow K, Braun BC, Zahmel J (2019): Preservation of female genetic resources in feline species. REPROD DOMEST ANIM 54, 13–14.
  24. Jewgenow K, Fernandez-Gonzalez L, Jänsch S, Viertel D, Zahmel J (2019): Brilliant cresyl blue staining allows the selection for developmentally competent immature feline oocytes. THERIOGENOLOGY 126, 320–325. doi:10.1016/j.theriogenology.2018.12.021.
  25. Araújo Martins JL, Lopes MD, Ferreira de Souza F, Sossai Possebon F, Wibbelt G, Jewgenow K (2018): Cat preantral follicle survival after prolonged cooled storage followed by vitrification. CRYOBIOLOGY 81, 94–100. doi:10.1016/j.cryobiol.2018.02.004.
  26. Braun BC, Okuyama MW, Müller K, Dehnhard M, Jewgenow K (2018): Steroidogenic enzymes, their products and sex steroid receptors during testis development and spermatogenesis in the domestic cat (Felis catus). J STEROID BIOCHEM MOL BIOL 178, 135–149. doi:10.1016/j.jsbmb.2017.11.013.
  27. Elger W, Schneider B, Killeen Z, Jewgenow K, Dehnhard M, Friedrich M, Santhamma B, Wedemeyer R, Nickisch K (2018): 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. J STEROID BIOCHEM MOL BIOL 183,152-158. doi:10.1016/j.jsbmb.2018.06.009.
  28. Hribal R, Rübensam K, Bernhardt S, Jewgenow K, Guenther A (2018): Effect of season on reproductive behaviors and fertilization success in cavies (Cavia aperea). THERIOGENOLOGY 114, 185–190. doi:10.1016/j.theriogenology.2018.03.039.
  29. Weyrich A, Jeschek M, Schrapers KT, Lenz D, Chung H, Rübensam K, Yasar S, Schneemann M, Ortmann S, Jewgenow K, Fickel J (2018): Diet changes alter paternally inherited epigenetic pattern in male Wild guinea pigs. ENVIRON EPIGENET 4, dvy011. doi:10.1093/eep/dvy011.
  30. Braun BC, Jewgenow K (2017): Expression of steroidogenic enzymes and steroid receptors in foetal gonads of domestic cat – sex similarities and differences. REPROD DOMEST ANIM 52, Suppl. 2, 130–136. doi:10.1111/rda.12829.
  31. Dehnhard M, Naidenko SV, Jewgenow K (2017): Meta-bolism of prostaglandin F2alpha in Eurasian lynx (Lynx lynx) and Asian leopard cat (Prionailurus bengalensis euptilura). REPROD DOMEST ANIM 52, Suppl. 2, 45–51. doi:10.1111/rda.12894.
  32. Fernandez-Gonzalez L, Jewgenow K (2017): Cryo-preserva-tion of feline oocytes by vitrification using commercial kits and slush nitrogen technique. REPROD DOMEST ANIM 52, Suppl. 2, 230–234. doi:10.1111/rda.12837.
  33. Jewgenow K, Braun BC, Dehnhard M, Zahmel J, Goeritz F (2017): Research on reproduction is essential for captive breeding of endangered carnivore species. REPROD DOMEST ANIM 52, Suppl. 2, 18–23. doi:10.1111/rda.12836.
  34. Sowinska N, Müller K, Niżański W, Jewgenow K (2017): Mitochondrial characteristics in oocytes of the domestic cat (Felis catus) after in vitro maturation and vitrification. REPROD DOMEST ANIM 52, 806–813. doi:10.1111/rda.12982.
  35. Zahmel J, Mundt H, Jewgenow K, Braun BC (2017): Analysis of gene expression in granulosa cells post maturation to evaluate oocyte culture systems in domestic cat. REPROD DOMEST ANIM 52, Suppl. 2, 65–70. doi:10.1111/rda.12927.
  36. Zschockelt L, Amelkina O, Siemieniuch M, Kowalewski M, Dehnhard M, Jewgenow K, Braun BC (2016): Synthesis and reception of prostaglandins in corpora lutea of domestic cat and lynx. REPRODUCTION 152, 111–126. doi:10.1530/REP-16-0180.
  37. Amelkina O, Zschockelt L, Painer J, Serra R, Villaespesa F, Braun BC, Jewgenow K (2015): Apoptosis-related factors in the luteal phase of the domestic cat and their involvement in the persistence of corpora lutea in lynx. PLOS ONE 10, e0143414. doi:10.1371/journal.pone.0143414.
  38. Fernandez-Gonzalez L, Hribal R, Stagegaard J, Zahmel J, Jewgenow K (2015): Production of lion (Panthera leo) blastocysts after in vitro maturation of oocytes and ICSI. THERIOGENOLOGY 83, 995–999. doi:10.1016/j.theriogenology.2014.11.037.
  39. Dehnhard M, Naidenko SV, Jewgenow K (2014): Comparative metabolism of PGFM (13,14-dihydro-15-keto-PGF2α) in feces of felids. THERIOGENOLOGY 81, 733–743. doi:10.1016/j.theriogenology.2013.12.007.
  40. Painer J, Jewgenow K, Dehnhard M, Arnemo JM, Linnell JDC, Odden J, Hildebrandt TB, Göritz F (2014): Physiologically persistent Corpora lutea in Eurasian Lynx (Lynx lynx) – Longitudinal ultrasound and endocrine examinations intra-vitam. PLOS ONE 9, e90469. doi:10.1371/journal.pone.0090469.
  41. Pribbenow S, Jewgenow K, Vargas A, Serra R, Naidenko S, Dehnhard M (2014): Validation of an enzyme immunoassay for the measurement of faecal glucocorticoid metabolites in Eurasian (Lynx lynx) and Iberian lynx (Lynx pardinus). GEN COMP ENDOCRINOL 206, 166–177. doi:10.1016/j.ygcen.2014.07.015.
  42. Jewgenow K, Pukazhenthi BS, Schoen J (2013): Analysis of Sertoli cell-efficiency allows the differentiation between two fundamentally different forms of feline teratospermia. THERIOGENOLOGY 79, 261–266. doi:10.1016/j.theriogenology.2012.08.014.
  43. Wiedemann C, Zahmel J, Jewgenow K (2013): Short-term culture of ovarian cortex pieces to assess the cryopre-servation outcome in wild felids for genome conservation. BMC VET RES 9, 37. doi:10.1186/1746-6148-9-37.
  44. Wongbandue G, Jewgenow K, Chatdarong K (2013): Effects of thyroxin (T4) and activin A on in vitro growth of cat preantral follicles in domestic cats. THERIOGENOLOGY 79, 824–832. doi:10.1016/j.theriogenology.2012.12.008.