Zobrazeno 1 - 10
of 714
pro vyhledávání: '"J. Petr"'
Publikováno v:
Czech Journal of Animal Science, Vol 61, Iss 10, Pp 433-449 (2016)
A range of substances that are released into the environment, foodstuffs and drinking water as a result of human activity were originally considered relatively harmless, and it was only later that their adverse effects were discovered. In general the
Externí odkaz:
https://doaj.org/article/7e90f36b59e54accafcb78673f17f684
Autor:
L. Tůmová, E. Chmelíková, T. Žalmanová, V. Kučerová-Chrpová, R. Romar, M. Dvořáková, K. Hošková, J. Petr
Publikováno v:
Animal, Vol 10, Iss 12, Pp 1998-2007 (2016)
Calcineurin is required for oocyte exit from meiotic block in metaphase II (MII) stage in invertebrates and also in lower vertebrates. However, the role of calcineurin in mammalian oocyte activation is still unclear. The aim of this study was to dete
Externí odkaz:
https://doaj.org/article/6ac66e48eaa244f8b2df23ab336abe3f
Autor:
M. Sedmíková, J. Petr, A. Dörflerová, J. Nevoral, B. Novotná, T. Krejčová, E. Chmelíková, L. Tůmová
Publikováno v:
Czech Journal of Animal Science, Vol 58, Iss 12, Pp 535-545 (2013)
Oocyte ageing is a complex of processes that occur when matured in vitro oocytes are, after reaching the metaphase II stage, exposed to further in vitro culture. Aged oocytes remaining at the metaphase II stage undergo spontaneous parthenogenetic act
Externí odkaz:
https://doaj.org/article/a76c136f90de46119de51c9f1b3eff95
Autor:
J. Nevoral, T. Krejčová, J. Petr, P. Melicharová, A. Vyskočilová, M. Dvořáková, I. Weingartová, E. Chmelíková, L. Tůmová, K. Hošková, V. Kučerová-Chrpová, M. Sedmíková
Publikováno v:
Czech Journal of Animal Science, Vol 58, Iss 10, Pp 453-459 (2013)
In the sphere of reproductive biotechnologies, the demand for sufficient numbers of high-quality oocytes is still increasing. In some cases, this obstacle is overcome by in vitro prolonged cultivation. However, a prolonged oocyte culture is accompani
Externí odkaz:
https://doaj.org/article/7e599c542853426d8a479e56f18de149
Publikováno v:
Animal, Vol 7, Iss 1, Pp 134-142 (2013)
Pesticides can significantly harm reproduction in animals and people. Pyrethroids are often used as insecticides, and their toxicity for mammals is considered to be low. However, cypermethrin, deltamethrin and fenvalerate – as potent specific inhib
Externí odkaz:
https://doaj.org/article/8fa97009ccf14bdd92f2b5aac8cf7759
Publikováno v:
Animal, Vol 7, Iss 2, Pp 279-286 (2013)
Nitric oxide (NO) and protein kinase C (PKC) are involved in the activation of mammalian oocytes, although their role in the exit from the metaphase II stage and cortical granule (CG) exocytosis is still not fully understood. The aim of this study wa
Externí odkaz:
https://doaj.org/article/d295d6ae838942448b076adb698ab8e0
Publikováno v:
Animal, Vol 5, Iss 4, Pp 565-571 (2011)
When cultured for an extended time, pig oocytes that matured in vitro to the stage of metaphase II undergo the complex process designated as ageing. Under our conditions, some pig oocytes aged 3 days remained at the stage of metaphase II (22%), but o
Externí odkaz:
https://doaj.org/article/5fbb0f63b08240469d590dd4c175c793
Autor:
H. Tichovská, J. Petr, E. Chmelíková, M. Sedmíková, L. Tůmová, M. Krejčová, A. Dörflerová, R. Rajmon
Publikováno v:
Animal, Vol 5, Iss 9, Pp 1398-1405 (2011)
Reproductive biotechnology such as in vitro fertilization, the creation of transgenic animals or cloning by nuclear transfer depends on the use of fully grown, meiotically competent oocytes capable of completing meiotic maturation by reaching the sta
Externí odkaz:
https://doaj.org/article/7b1fd9f53e8d4d2c8630a35fbae84187