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Wyszukujesz frazę "progesterone" wg kryterium: Temat

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    Wyświetlanie 1-12 z 12
    Tytuł:
    Effect of ovulation rate and timing of ovulation after different hormone treatments on pregnancy rate in dairy cows
    Autorzy:
    Répási, A.
    Szelényi, Z.
    Melo De Sousa, N.
    Beckers, J.F.
    Nagy, K.
    Szenci, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087522.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    dairy cow
    prostaglandin
    GnRH
    ultrasonography
    progesterone
    Źródło:
    Polish Journal of Veterinary Sciences; 2019, 2; 355-362
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Relationship between in-line milk progesterone before and after artificial insemination and fertility outcomes in dairy cows
    Autorzy:
    Gavelis, A.
    Juozaitis, A.
    Japertienė, R.
    Palubinskas, G.
    Juozaitienė, V.
    Žilaitis, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087190.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    in-line milk progesterone
    cow reproductive performance
    Źródło:
    Polish Journal of Veterinary Sciences; 2021, 24, 2; 183-190
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of puerperal metritis on the first ovulation after calving in dairy cows
    Autorzy:
    Juodžentis, V.
    Šiugždaitė, J.
    Palubinskas, G.
    Juodžentė, D.
    Rekešiūtė, A.
    Žilinskas, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087266.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    corpus luteum
    dominant follicle
    ovulation
    metritis
    progesterone
    Źródło:
    Polish Journal of Veterinary Sciences; 2020, 23, 4; 619-626
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Accuracy of bovine pregnancy-associated glycoproteins (bPAGs) in the diagnosis of pregnancy: A comparative study of three pregnancy diagnostic methods
    Autorzy:
    Ghaidan, M.T.
    Dana, O.I.
    Dyary, H.O.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087383.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    bPAGs
    detection of pregnancy
    progesterone
    rectal palpation
    Źródło:
    Polish Journal of Veterinary Sciences; 2019, 4; 769-775
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of progesterone-releasing intravaginal device on reproductive performance of cows with cystic ovarian follicles after puerperium
    Autorzy:
    Rudowska, M.
    Barański, W.
    Zduńczyk, S.
    Tobolski, D.
    Janowski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087479.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cows
    cystic ovarian follicles
    progesterone insert
    fertility
    Źródło:
    Polish Journal of Veterinary Sciences; 2019, 3; 489-494
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of subcutaneous melatonin implants and short-term intravaginal progestagen treatments on estrus induction and fertility of Kivircik ewes on seasonal anestrus
    Autorzy:
    Yilmazer, C.
    Cevik, M.
    Kocyigit, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087723.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ewes
    fertility
    melatonin
    short-term progesterone
    seasonality
    Źródło:
    Polish Journal of Veterinary Sciences; 2018, 21, 2; 353-359
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preovulatory progesterone secretion terminates the duration of reproductive behavior during heat in the bitch
    Autorzy:
    Bladowska, K.
    Barański, W.
    Janowski, T.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087689.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    bitch
    preovulatory progesterone
    aglepristone treatment
    reproductive behavior
    estrus
    Źródło:
    Polish Journal of Veterinary Sciences; 2018, 21, 3; 615-622
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Local effect of progesterone infusion into ovarian artery on activin A and inhibin alpha-subunit secretion during the middle luteal phase in gilts
    Autorzy:
    Wasowska, B
    Stefanczyk-Krzymowska, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/30684.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    dimeric glycoprotein
    activin
    inhibin
    growth factor-beta
    progesterone infusion
    ovarian artery
    alpha-subunit
    secretion
    exogenous progesterone
    local feedback
    gilt
    middle luteal phase
    Opis:
    The present study was undertaken to elucidate whether an increased, but physiological, amount of progesterone (P4) supplied to the porcine corpus luteum affects luteal secretion of activin A and inhibin a-subunit (Inha) in freely moving gilts. On day 9 of the estrous cycle (EC), both ovarian arteries and both ovarian veins of gilts (n=5) were cannulated. Progesterone was infused into the right ovarian arteries in gilts on days 10, 11 and 12 of the EC at a rate adequate to its physiological retrograde transfer found during the middle luteal phase of the EC. The P4 infusion rate was 0.62 μg/min (day 10), 2x0.62 μg/min (day 11) and 3x0.62 μg/min (day 12). The left ovarian arteries were infused with saline (control). Blood samples were collected from both ovarian veins on days 10-12 of the EC before and after P4 or saline infusion. The mean plasma activin A level in the ovarian vein ipsilateral to the P4-infused ovary was higher (PcO.OOOl) on days 10-12 of the EC than this found in the contralateral ovarian vein. The level of activin A in the ovarian vein ipsilataral to the infusion of P4 was higher on days 11 (PcO.Ol) and 12 (P<0.0001) and tended to be higher (P<0.07) on day 10 of the EC than this in contralateral ovarian vein. The level of Inha in the ovarian vein ipsilateral to the P4-infused ovary on days 10-12 of the EC was not significantly different (P>0.05) than this found in the contralateral ovarian vein. The results of the present study indicate that a local elevation of P4 concentration in blood supplying the ovary during the middle luteal phase of the porcine EC affects ovarian secretion of activin A. The effect of P4 on the secretion of activin A suggested the existence of a short regulatory loop of a positive feedback between P4 being retrogradely transferred into the ovary and the secretion of this peptide.
    Źródło:
    Polish Journal of Veterinary Sciences; 2010, 13, 1; 97-104
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Agreement of different methods for assessment of progesterone concentrations in beef cattle serum
    Autorzy:
    Rekešiūtė, A.
    Januškauskas, A.
    Šiukščius, A.
    Riškevičienė, V.
    Vitkauskienė, A.
    Verkauskienė, R.
    Antanaitis, R.
    Žilinskas, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087384.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    agreement
    confidence interval
    assessment methods
    progesterone
    sample extraction
    ELISA
    RIA
    Źródło:
    Polish Journal of Veterinary Sciences; 2019, 4; 695-701
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of progesterone on oxytocin-stimulated intracellular Ca2plus mobilisation and prostaglandin secretion in porcine endometrium
    Autorzy:
    Kotwica, G.
    Oponowicz, A.
    Kurowicka, B.
    Franczak, A.
    Bogacka, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/31688.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    progesterone
    oxytocin
    intracellular calcium
    calcium
    prostaglandin secretion
    porcine endometrium
    endometrium
    pregnancy
    pig
    hormone
    Opis:
    We have studied in the porcine endometrium the expression of oxytocin receptor (OTR) mRNA and the effect of progesterone (P₄) on oxytocin/oxytocin receptor (OT/OTR) function concerning intracellular Ca²⁺mobilisation ([Ca²⁺]i), prostaglandin F2α (PGF2α) and E2 (PGE2; PG) secretion. Tissue was taken from cyclic and early pregnant pigs (days 14-16). A higher expression of OTR mRNA (P<0.05) was observed in the endometrium of cyclic than pregnant pigs. The stimulatory (P<0.05) effect of OT (10⁻⁷ M) on [Ca²⁺]i mobilisation was noticed within 15-60 s and 30-60 s in endometrial stromal cells of cyclic and pregnant pigs, respectively. In the presence of P₄ (10⁻⁵ M) basal and OT-stimulated [Ca²⁺]i concentrations decreased in stromal cells during luteolysis and pregnancy. In stromal cells P₄ delayed mobilisation of [Ca²⁺]i in response to OT by 15 s during luteolysis and had no effect during pregnancy. In cyclic and pregnant epithelial cells OT stimulated mobilisation of [Ca²⁺]i in 45 s and 60 s, respectively. Oxytocin increased (P<0.05) PGF2α secretion during luteolysis and pregnancy and PGE2 during luteolysis from endometrial slices. Progesterone did not inhibit this stimulatory effect. During luteolysis OT increased (P<0.05) PGF2α in epithelial and stromal cells and PGE2 secretion in epithelial cells. In the presence of P₄ this effect of OT was reduced only in stromal cyclic cells (6 h culture). The presence of P₄ decreased the effect of OT on [Ca²⁺]i mobilisation only in stromal cells. We found that, in most conditions, P₄ did not inhibit the OT-stimulated secretion of PG in the porcine endometrium.
    Źródło:
    Polish Journal of Veterinary Sciences; 2010, 13, 4
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nuclear progesterone receptor isoforms and their functions in the female reproductive tract
    Autorzy:
    Rekawiecki, R.
    Kowalik, M.
    Kotwica, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/32231.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    nuclear receptor
    female
    reproductive tract
    progesterone
    isoform
    function
    embryo
    corpus luteum
    reproductive system
    endocrine gland
    ovulation
    ovarian follicle
    hormone
    cattle
    animal physiology
    Opis:
    Progesterone (P4), which is produced by the corpus luteum (CL), creates proper conditions for the embryo implantation, its development, and ensures proper conditions for the duration of pregnancy. Besides the non-genomic activity of P4 on target cells, its main physiological effect is caused through genomic action by the progesterone nuclear receptor (PGR). This nuclear progesterone receptor occurs in two specific isoforms, PGRA and PGRB. PGRA isoform acts as an inhibitor of transcriptional action of PGRB. The inactive receptor is connected with chaperone proteins and attachment of P4 causes disconnection of chaperones and unveiling of DNA binding domain (DBD). After receptor dimerization in the cells’ nucleus and interaction with hormone response element (HRE), the receptor coactivators are connected and transcription is initiated. The ratio of these isoforms changes during the estrous cycle and reflects the different levels of P4 effect on the reproductive system. Both isoforms, PGRA and PGRB, also show a different response to the P4 receptor antagonist activity. Connection of the antagonist to PGRA can block PGRB, but acting through the PGRB isoform, P4 receptor antagonist may undergo conversion to a strongly receptor agonist. A third isoform, PGRC, has also been revealed. This isoform is the shortest and does not have transcriptional activity. Alternative splicing and insertion of additional exons may lead to the formation of different PGR isoforms. This paper summarizes the available data on the progesterone receptor isoforms and its regulatory action within the female reproductive system.
    Źródło:
    Polish Journal of Veterinary Sciences; 2011, 14, 1
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of administration of biotin and zinc chelate (Zn-methionine) to cows in the first and second trimester of lactation on their health and productivity
    Autorzy:
    Kinal, S.
    Twardon, J.
    Bednarski, M.
    Pres, J.
    Bodarski, R.
    Slupczynska, M.
    Ochota, M.
    Dejneka, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/32375.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    animal health
    animal productivity
    biotin administration
    cow
    first lactation trimester
    lactation
    methionine
    second lactation trimester
    zinc chelate
    dairy cow
    blood serum
    mineral level
    acid-base balance
    milk productivity
    milk composition
    progesterone
    haptoglobin level
    Opis:
    In cattle, the prevention of diseases might be possible using dietary methods, with nutritional optimization of feed rations. For years significant influence has been associated with the addition of biotin, methionine and zinc (each given individually, or as chelate – Zn-methionine). The aim of this study was to evaluate the influence of biotin or biotin + Zn-methionine additives on the health and performance of cows, in the first and second trimester of lactation. This study was carried out in 3 groups of cows, 30 animals in each group. In the first group cows were fed the usual fodder used on the farm. In the second group biotin at 10 mg/day/cow was added. In the third group both biotin at 10 mg/day/cow and Zn-methionine at 5 g/day/cow were added. The administration of biotin increased the milk yield and reduced the occurrence of retained placenta, as well as endometritis puerperalis. However, the high doses of biotin suppressed ovulation and oestrus symptoms in the investigated cows (low progesterone levels on days 15, 21 and 45 after calving). Zn-methionine in comparison to biotin had a lower effect on the milk yield in the cows. Moreover, its supplementation improved the milk content, as well as some of the blood parameters; it also decreased the number of somatic cells in milk. The concurrent administration of biotin and zinc-methionine seemed to be a good method for the prophylaxis of subacute mastitis and for the improvement of the high yielding dairy cows’ productivity.
    Źródło:
    Polish Journal of Veterinary Sciences; 2011, 14, 1
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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