Wyniki wyszukiwania

1

Effect of cumulus-oocyte complex and its components on pig granulosa cell steroidogenesis and proliferation in vitro

100%

Tomanek M., Petr J.

Folia Histochemica et Cytobiologica. Supplement

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1997

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tom 35

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nr 2

2

Exploring cumulus-oocyte-complex-oviductal cell interactions: gene profiling in the bovine oviduct

84%

Gabler C., Odau S., Muller K., Schon J., Bondzio A., Einspanier R.

Journal of Physiology and Pharmacology. Supplement

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2008

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tom 59

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nr 9

29-42

3

Effect of bone morphogenetic protein-15 on gonadotropin-stimulated synthesis of hyaluronan and progesterone in porcine ovarian follicle

84%

Nagyova E., Nemcova L., Bujnakova Mlynarcikova A., Blaha M., Prochazka R., Scsukova S.

Journal of Physiology and Pharmacology

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2017

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tom 68

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nr 5

4

Association between the number and quality of bitch COC's and selected donor factors

84%

Bukowska D., Kempisty B., Antosik P., Jackowska M., Wozna M., Lianeri M., Jaskowski J. M.

Medycyna Weterynaryjna

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2010

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tom 66

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nr 07

480-483

The aim of the present study was to investigate whether selected factors attributed to oocyte donors can affect the number and quality of canine cumulus-oocyte-complexes (COC). The following parameters were considered: female age and body mass, ovarian weight, presence of functional ovarian structures (eg. corpus luteum, visible follicles), and ovarian and uterine pathology. Altogether 10 077 COCs were collected, on average 125.6 per bitch. The number and quality of collected COCs was significantly affected by female age and the presence of functional ovarian structures. We found an increased total number of COCs in up to 8-month-old bitches as compared to up-to-3-year-old and up-to-7-year-old females (P < 0.001). Moreover, senile females produced more high quality COCs than the younger ones. However, the differences between those groups were not statistically significant (P = 0.469, P = 0.346). A higher number of COCs was collected from ovaries with a smooth surface (202.8) or with visible follicles (121.1), in comparison to ovaries with corpus luteum (97.6), bitches with pyometra and pathologies of the ovaries or the uterus (82.8). No influence of the bitch’s body mass and ovarian weight on the number of COCs was observed, although a higher number of oocytes was usually collected from the right ovary. The quantity and morphological quality of bitch COCs varied significantly among individual females in an age-dependent manner. The greater number of COCs, isolated from younger bitches, may be associated with a higher reproductive potential and hormonal activity of these females. The study suggests that the age affects the total number of collected COCs but has no influence on the quality of bitch oocytes.

5

Quality and number of cumulus-oocyte complexes (COC) and concentrations of leptin and ghrelin in blood and follicular fluid depending on the body condition of cows

67%

Nowak T., Jaskowski J., Szczepankiewicz D., Olechnowicz J.

Medycyna Weterynaryjna

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2011

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tom 67

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nr 02

The aim of our study was to investigate the effect of body condition on the number of ovarian follicles, the number and quality of COC-complexes and/or concentration of leptin (LEP), total and active ghrelin (TGHR and AGHR) in blood plasma and follicular fluids. Before slaughter all cows were divided into five classes according to their body condition scores (BCS). Body condition had no significant influence on the number of follicles and aspirated oocytes. The mean number of oocytes of a very good quality (Grade 1 and Grade 2) was 0.79 and 1.14 in cows with BCS 2.50 and 2.51-3.0, and was lower than 2.69, 2.66 and 2.0, respectively, aspirated from follicles in cows from group 3.01-3.5, 3.51-4.0 and > 4.0. Body condition influenced the number of COCs of a very good quality (Grade 1, P < 0.05). There was no relation between body condition and the number of oocytes grades 2 and 4. We found an interrelation between blood leptin concentration and its concentration in the follicular fluid (P < 0.01). No significant relationship exists between the BCS of cows and concentrations of leptin and active ghrelin in blood plasma and the follicular fluid.

Ograniczanie wyników

Effect of cumulus-oocyte complex and its components on pig granulosa cell steroidogenesis and proliferation in vitro

Exploring cumulus-oocyte-complex-oviductal cell interactions: gene profiling in the bovine oviduct

Effect of bone morphogenetic protein-15 on gonadotropin-stimulated synthesis of hyaluronan and progesterone in porcine ovarian follicle

Association between the number and quality of bitch COC's and selected donor factors

Quality and number of cumulus-oocyte complexes (COC) and concentrations of leptin and ghrelin in blood and follicular fluid depending on the body condition of cows