Wyniki wyszukiwania

1

Oocyte maturation in the presence of randomly pooled follicular fluid increases bovine blastocyst yield in vitro

100%

Mohammed A. A., Karasiewicz J., Papis K., Modlinski J. A.

Journal of Animal and Feed Sciences

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2005

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tom 14

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nr 3

501-512

2

Structural, functional, and lectin histochemical characteristics of rat ovaries and endometrium in experimental hyper- and hypothyroidism

84%

Lutsyk A., Sogomonian E.

Folia Histochemica et Cytobiologica

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2012

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tom 50

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nr 3

3

Analysis of oocyte quality in recombinant inbred mouse strains developed from KE and CBA strains that differ in fertilization efficiency

84%

Wabik-Sliz B., Golas A., Krzanowska H.

Journal of Applied Genetics

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2005

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tom 46

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nr 2

Recombinant inbred (RI) mouse strains were developed from reciprocal crosses between two inbred strains differing in the proportion of fertilized ova (CBA, 100%; KE, 77%), to analyse the underlying factors. A correlation (r = 0.83, P< 0.01) between fertilization efficiency within 22 RI strains and after mating RI females with KE males proved that oocyte quality was involved. The following oocyte parameters were analysed in RI and progenitor strains: time of meiotic maturation, rapidity of enzymatic removal of egg investments, and proportion of fertilized ova with supplementary spermatozoa in the perivitelline space. Among the RI strains, high incidence of supplementary spermatozoa was correlated with lower efficiency of fertilization (r = -0.58, P < 0.05) and with slow meiotic maturation (r=-64, P < 0.01), suggesting that delayed maturation may affect oocyte ability of being fertilized by the first penetrating spermatozoon. However, significant correlations were also found between characters which coexist within the progenitor strains, but are not likely to be physiologically related; this suggests that RI strains have inherited large blocks of progenitor genomes, not disrupted by recombination. The strain distribution pattern (SDP) of the analysed traits revealed CBA-like, KE-like, and intermediate phenotypes, indicating that they are polygenically determined. No linkages were found between the studied traits and 12 enzymatic markers. However, the SDP for fertilization efficiency showed a preponderance of non-matching strains (15/19) in relation to agouti locus; the known instability of this chromosome region makes it possible that a putative linkage was disrupted by recombination when RI strains were created.

4

Effect of environmental factors on oocyte maturation and spawning delay or inhibition, in black-bass [Micropterus salmoides L.]: Synthesis of the two year experiments

84%

Martin M., Goubier V., Exbrayat J. M., Kamwira S.

Polskie Archiwum Hydrobiologii

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1999

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tom 46

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nr 1

5

The road to identifying the juvenile hormone membrane receptor: pharmacological studies on ovarial patency in Heliothis virescens

67%

Pszczolkowski M. A., Olson E. E., Srinivasan A., Ramaswamy S. B.

Pestycydy

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2005

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nr 3

161-167

6

De novo synthesis of protein phosphatase 1A, magnesium dependent, alpha isoform (PPM1A) during oocyte maturation

67%

Chuderland D., Dvashi Z., Kaplan-Kraicer R., Ben-Meir D., Shalgi R., Lavi S.

Cellular and Molecular Biology Letters

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2012

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tom 17

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nr 3

Oocyte maturation in mammals is a multiple-stage process that generates fertilizable oocytes. Ovarian oocytes are arrested at prophase of the first meiotic division characterized by the presence of a germinal vesicle. Towards ovulation, the oocytes resume meiosis and proceed to the second metaphase in a process known as maturation; they undergo nuclear and cytoplasmic changes that are accompanied by translation and degradation of mRNA. Protein phosphatase 1A, magnesium dependent, alpha isoform (PPM1A), which belongs to the metal-dependent serine/threonine protein phosphatase family, is highly conserved during evolution. PPM1A plays a significant role in many cellular functions such as cell cycle progression, apoptosis and cellular differentiation. It works through diverse signaling pathways, including p38 MAP kinase JNK and transforming growth factor beta (TGF-β). Herein we report that PPM1A is expressed in mouse oocytes and that its mRNA level rises during oocyte maturation. Using quantitative real-time polymerase chain reaction (qPCR) and western blot analysis, we found that PPM1A mRNA is synthesized at the beginning of the maturation process and remains elevated in the mature oocytes, promoting the accumulation of PPM1A protein. Since PPM1A function is mainly affected by its level, we propose that it might have an important role in oocyte maturation.

7

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The application of in vitro cattle embryo production system to study the influence of elevated temperature on oocyte maturation, fertilization and early embryonic development

67%

Rynkowska A., Rapala L., Trzeciak P., Duszewska A. M.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2011

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tom 92

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nr 1

8

Proteomics of M-phase entry: ‘Omen’ vs. ‘Omre’, the battle for oocyte quality and beyond

67%

Kubiak J. Z.

Folia Histochemica et Cytobiologica

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2011

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tom 49

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nr 1

9

Oogeneza w aspekcie liczebnego dojrzewania oocytow u wybranych gatunkow ryb kostnoszkieletowych Osteichthyes

59%

Krajewska W.

Acta Academiae Agriculturae ac Technicae Olstenensis. Protectio Aquarum et Piscatoria

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1997

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tom 22,Suppl.B

1-52

Ograniczanie wyników

Oocyte maturation in the presence of randomly pooled follicular fluid increases bovine blastocyst yield in vitro

Structural, functional, and lectin histochemical characteristics of rat ovaries and endometrium in experimental hyper- and hypothyroidism

Analysis of oocyte quality in recombinant inbred mouse strains developed from KE and CBA strains that differ in fertilization efficiency

Effect of environmental factors on oocyte maturation and spawning delay or inhibition, in black-bass [Micropterus salmoides L.]: Synthesis of the two year experiments

The road to identifying the juvenile hormone membrane receptor: pharmacological studies on ovarial patency in Heliothis virescens

De novo synthesis of protein phosphatase 1A, magnesium dependent, alpha isoform (PPM1A) during oocyte maturation

The application of in vitro cattle embryo production system to study the influence of elevated temperature on oocyte maturation, fertilization and early embryonic development

Proteomics of M-phase entry: ‘Omen’ vs. ‘Omre’, the battle for oocyte quality and beyond

Oogeneza w aspekcie liczebnego dojrzewania oocytow u wybranych gatunkow ryb kostnoszkieletowych Osteichthyes