Zobrazeno 1 - 10
of 42
pro vyhledávání: '"M. Baltsen"'
Publikováno v:
Journal of Lipid Research, Vol 43, Iss 1, Pp 82-89 (2002)
Lanosterol 14α-demethylase (CYP51) produces follicular fluid meiosis-activating sterol (FF-MAS), which is converted further to testis meiosis-activating sterol (T-MAS). MAS are intermediates in the cholesterol biosynthetic pathway, with the ability
Externí odkaz:
https://doaj.org/article/5e15d4144cea4388880ba7989c248b71
Autor:
L.D. Klentzeris, Geraldine M. Hartshorne, C.R. Kennedy, J.L. Cavilla, A.G. Byskov, M. Baltsen
Publikováno v:
Human Reproduction. 16:547-555
The object of this study was to assess functional maturation in vitro by obtaining data on the fertilization and embryonic competence of human oocytes with or without exposure to meiosis activating sterol (MAS) during maturation in vitro. Immature oo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::262542d90a3c02d0e0dafec6343f9000
https://doi.org/10.1093/humrep/16.3.547
https://doi.org/10.1093/humrep/16.3.547
Publikováno v:
Journal of Reproduction and Fertility
Journal of Reproduction and Fertility, Portland Press, 2000, 118, pp.351-360
Journal of Reproduction and Fertility, Portland Press, 2000, 118, pp.351-360
In mares, the shortage of oocytes and the variability in nuclear maturation at a certain time of the oestrous cycle hinders the optimization of methods for in vitro maturation and in vitro fertilization. Increasing the number of small-to-medium-sized
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22d91164e5835cdef9e4aca43a2caf3f
https://doi.org/10.1530/reprod/118.2.351
https://doi.org/10.1530/reprod/118.2.351
Publikováno v:
Reproduction. 118:171-179
Two sterols of the cholesterol biosynthetic pathway induce resumption of meiosis in mouse oocytes in vitro. The sterols, termed meiosis-activating sterols (MAS), have been isolated from human follicular fluid (FF-MAS, 4,4-dimethyl-5 alpha-cholest-8,1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adfc415408b0e7fea506b9bb8861cbfc
https://doi.org/10.1530/reprod/118.1.171
https://doi.org/10.1530/reprod/118.1.171
Autor:
A. G. Byskov, M. Baltsen
Publikováno v:
Biomedical Chromatography. 13:382-388
A chromatographic assay for 4,4-dimethyl-5alpha-cholesta-8,14, 24-triene-3beta-ol (FF-MAS), and its reduced species, 4, 4-dimethyl-5alpha-cholesta-8,24-triene-3beta-ol (T-MAS), has been established for analysis of human follicular fluid (huFF). The a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::048f583c008e21902e1ad415d6b6b39d
https://doi.org/10.1002/(sici)1099-0801(199910)13:6<382::aid-bmc896>3.0.co
https://doi.org/10.1002/(sici)1099-0801(199910)13:6<382::aid-bmc896>3.0.co
Publikováno v:
Theriogenology
Theriogenology, Elsevier, 2002, 57, pp.1765-1779. ⟨10.1016/S0093-691X(02)00650-7⟩
Theriogenology, Elsevier, 2002, 57, pp.1765-1779. ⟨10.1016/S0093-691X(02)00650-7⟩
International audience; In the mare, rates of fertilization and development are low in oocytes matured in vitro, and a closer imitation of in vivo conditions during oocyte maturation might be beneficial. The aims of the present study were, therefore,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c3ac445c4f14add6514761527daf0fe
https://hal.inrae.fr/hal-02682522
https://hal.inrae.fr/hal-02682522
Autor:
M, Baltsen
Publikováno v:
Biology of reproduction. 65(6)
The resumption of oocyte meiosis is triggered by a number of 4,4-dimethylsterols termed meiosis-activating sterols (MAS). The levels of meiosis active (follicular fluid [FF]-MAS and bull testes [T]-MAS) and inactive (lanosterol) 4,4-dimethylsterols,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::9604e73bc60d6f59373a3ebdba4703b4
https://pubmed.ncbi.nlm.nih.gov/11717136
https://pubmed.ncbi.nlm.nih.gov/11717136
Publikováno v:
Theriogenology. 56(1)
Meiosis activating sterols (MAS) are pre-cholesterol sterols that can be isolated from follicular fluid (FF-MAS) or testes (T-MAS). Meiosis activating sterols trigger the resumption of meiosis in cultured meiotically competent oocytes. In the present
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a35858a77db4b8a3c8f26afe535f459e
https://pubmed.ncbi.nlm.nih.gov/11467509
https://pubmed.ncbi.nlm.nih.gov/11467509
Publikováno v:
Theriogenology. 55(4)
In the cryptorchid stallion, spermatogenesis is arrested at various levels before the completion of meiosis. In men, infantile cryptorchidism is also often associated with oligo- and azoospermia during adulthood. An impairment of spermatogenesis migh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7609b3e180156ef1f67f8989ce6c152
https://pubmed.ncbi.nlm.nih.gov/11291920
https://pubmed.ncbi.nlm.nih.gov/11291920
Publikováno v:
The Journal of experimental zoology. 285(3)
In mammals two meiosis activating sterols (MAS) have been found to activate meiotic resumption in mouse oocytes, in vitro. FF-MAS (4, 4-dimethyl-5alpha-cholesta-8,14,24-triene-3beta-ol) was extracted from human preovulatory follicular fluid and T-MAS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::b0aab60f6672e00fd85bbc9ecc45ab2f
https://pubmed.ncbi.nlm.nih.gov/10497322
https://pubmed.ncbi.nlm.nih.gov/10497322