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Acta Veterinaria Hungarica
Authors: Caner Öztürk, Şükrü Güngör, Mehmet Bozkurt Ataman, Mustafa Numan Bucak, Nuri Başpinar, Pınar Ili, and Muhammed Enes Inanç

. , Mukhopadhyay , D. , Bhattacharya , J. , Kundu , S. and Banerjee , A. ( 2006 ): Cryopreservation and post thaw motility, DNA integrity and acrosome status of pre-freeze prepared human semen in different trehalose concentrations . Hum. Reprod. 21

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Acta Veterinaria Hungarica
Authors: Davide Monaco, Miguel Batista, Olga Amann, Barbara Padalino, Wouter Pieters, Mariacristina Morelli, Gianluca Accogli, Salvatore Desantis, and Giovanni Michele Lacalandra

of collected ES and (c) to evaluate the effect of the addition of 15% SP to the freezing extender, on post-thaw semen parameters of the collected samples. Materials and methods Two separate experiments were performed in 2015–2016 and 2017

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Concannon, P. (1988): Canine sperm post-thaw survival following freezing in straws or pellets using PIPES, Lactose, TRIS or TEST extenders. XIth International Congress on Animal Reproduction and Artificial Insemination (Dublin) 3 , 229

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Acta Veterinaria Hungarica
Authors: Zhao Namula, Fuminori Tanihara, Manita Wittayarat, Maki Hirata, Nhien Thi Nguyen, Takayuki Hirano, Quynh Anh Le, Masahiro Nii, and Takeshige Otoi

, 191 – 200 . Li , J. , Parrilla , I. , Ortega , M. D. , Martinez , E. A. , Rodriguez-Martinez , H. and Roca , J. ( 2018 ): Post-thaw boar sperm motility is affected by

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Experiments were carried out on the sperm cryopreservation of artificially induced eels. The effects of several extenders and two cryoprotectants on the motility of spermatozoa were investigated. The highest post-thaw motility was observed with the combination of Tanaka's extender and DMSO as cryoprotectant. Further dilution after thawing resulted in complete loss of motility in samples frozen in presence of DMSO while sperm frozen with methanol as cryoprotectant retained its motility after further dilution.

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Orvosi Hetilap
Authors: Péter Fancsovits, János Urbancsek, László Fónyad, Anna Sebestyén, Gézáné †Csorba, Ádám Lehner, Zita Kaszás, János Rigó jr., and Attila Bokor

Absztrakt

Bevezetés: A nőbetegek onkológiai kezelése a petefészek-működés károsodását okozhatja. Ennek megelőzésére lehetőség van a petefészekszövet mélyfagyasztására, hosszú távú tárolására, majd a petefészek-működést károsító beavatkozások után a szövetminták visszaültetésére. Célkitűzés: Jelen tanulmányban a szerzők azt vizsgálták, hogy a petefészekszövet-fagyasztás módszerei mennyiben befolyásolják a felolvasztott szövetminták életképességét. Módszer: A munka során 10 kutatási célra felajánlott szövetminta fagyasztását-felolvasztását végezték el, majd a szövetminták túlélését vizsgálták. Szövettani vizsgálatokkal hasonlították össze a friss és a fagyasztott-felolvasztott mintákban lévő tüszők állapotát, illetve meghatározták hormontermelésüket. Eredmények: Szövettani vizsgálatokkal igazolták, hogy a fagyasztott-felolvasztott mintákban az életképesnek tűnő tüszők száma 23%-kal csökkent, de még a szövettenyésztést követően is megfigyeltek életképes tüszőket. A felolvasztott szövetminták maximális ösztradioltermelése 908 pg/ml volt, és a hormontermelés mértéke a friss mintákéhoz hasonló értékeket mutatott. A felolvasztott szövetek progeszterontermelésének maximuma 1,95 ng/ml volt, amely elmaradt a friss szövetminták hormonértékeitől. Következtetések: A szerzők által alkalmazott petefészekszövet-fagyasztási módszerrel biztosítható a tüszők fagyasztás-felolvasztás utáni túlélése, így intézetükben megkezdték a módszer kísérleti klinikai alkalmazását daganatos betegek termékenységének megőrzése céljából. Orv. Hetil., 2016, 157(49), 1947–1954.

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Experiments were carried out on sperm cryopreservation of two European percid fish species, the pikeperch (Sander lucioperca) and the Volga pikeperch (S. volgensis) . Two experiments were conducted on pikeperch sperm. In the first, the effects of three extenders (Glucose, KCl, Sucrose) and two cryoprotectants (dimethyl-sulfoxide: DMSO, methanol: MeOH) were tested on motility and fertilization. In the second, the effects of two dilution ratios (1: 1, 1: 9) and two cryoprotectants (DMSO, MeOH) on hatching were investigated. In the experiment on Volga pikeperch the suitability of using cryopreservation for fertilization was investigated. In the first experiment on pikeperch the highest post-thaw motility (28 ± 21%) and fertilization rate (43 ± 12%) was found with DMSO as cryoprotectant in combination with Glucose extender. In the second, the highest hatch rate (41 ± 22%) was observed with MeOH as cryoprotectant and 1: 1 sperm dilution ratio, however no significant difference was found among the results. In the experiment on Volga pikeperch hatch rates with cryopreserved sperm (60 ± 2%) did not significantly differ from the control (60 ± 6%). Contamination of sperm with urine seems to be a key problem in the success of sperm cryopreservation of these species.

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Sperm samples were collected from the epididymides of 11 hunter-killed stags (Cervus elaphus hippelaphus) within 2 to 17 h post mortem in September 1991. Progressively motile spermatozoa were diluted and deep-frozen in tris-yolk extender by a procedure routinely used for bovine semen. The pre-freezing motility of spermatozoa from 6 stags was higher than 80%, while the sperm of 5 animals was found to be unsuitable for dilution. In the post-thawed sperm of six stags 40-50% of the spermatozoa showed progressive motility and the number of viable spermatozoa ranged from 8.6 to 26.7 × 106 per 0.25 ml straw. Two years later, three hinds were superovulated by the use of a progesterone-releasing intravaginal device (CIDR type G, Carter, Holt Harvey Plastic Products Group Ltd., Hamilton, New Zealand) for a period of 14 days and with follicle stimulating hormone (Folicotropin inj., Spofa, Prague). Each hind was inseminated artificially 60 h after the withdrawal of CIDR with thawed sperm injected into the uterus via the vagina. Seven days later the uteri were flushed out, as a result of which 3 early blastocysts + 1 ovum, 3 morulae + 4 ova, and 1 morula + 7 ova, respectively, were recovered from the three hinds. Deer embryos were frozen according to a glycerolbased freezing protocol. A further two years later two hinds were oestrussynchronised with CIDR type G and 300 IU PMSG (Folligon inj., Intervet, NL), and two of the thawed embryos were transplanted into two recipient hinds 7 days after heat. One of these gave birth to a normal stag fawn in June 1996. This was the first deer born in Hungary from embryo transfer. The results obtained indicate that sperm from top stags shot in the course of hunting can prove useful for the preservation of genetic material or in the development of the farmed deer system.

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Acta Veterinaria Hungarica
Authors: B. Baranyai, Sz. Bodó, A. Dinnyés, and Elen Gócza

Nowshari, M. A. and Brem, G. (1998): Effect of cryoprotectants and their concentration on post-thaw survival and development of expanded mouse blastocysts frozen by a simple rapid-freezing procedure. Theriogenology 50 , 1001

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Acta Veterinaria Hungarica
Authors: Vera Faigl, Nóra Vass, András Jávor, Margit Kulcsár, László Solti, Georgios Amiridis, and Sándor Cseh

Leahy, T., Marti, J. I., Mendoza, N., Pérez-Pé, R., Muino-Blanco, T., Cebrian-Pérez, J. A., Evans, G. and Maxwell, M. C. (2010): High pre-freezing dilution improves post-thaw function of ram spermatozoa. Anim. Reprod. Sci. 119 , 137

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