Magdalena Karolina Kowalik

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Progesterone (P4) is involved in the regulation of essential reproductive functions affecting the target cells through both nuclear progesterone receptors (PGRs) and membrane progesterone receptors. The aim of this study was to determine the mRNA and protein expression for PGRMC1, PGRMC2, SERBP1 and PGR within the bovine endometrium during the estrous cycle(More)
The main function of the corpus luteum (CL) is to synthesize and secrete progesterone (P4), which regulates the duration of the estrous cycle and maintains of pregnancy in many species. Both synthesis and action of this hormone is regulated by many luteotropic and luteolytic factors. Progesterone also affects its own synthesis by regulation of the activity(More)
The aim was to study whether bovine myometrial cells have an enzymatic system able to produce prostaglandins (PGs) and whether PGs synthesis is regulated by steroids in a similar manner as endometrial cells. In Experiment 1, immunohistochemical studies localized proteins for cyclooxygenase 2 (COX2), PGE synthase (PGES) and PGF2alpha synthase (PGFS) in(More)
Progesterone (P4) decreases oxytocin (OT)-stimulated prostaglandin (PG)F2α, but not PGE2 secretion from bovine endometrial cells and this effect is partly elicited via a non-genomic route. The aim of this study was to determine whether P4 and pregnenolone (P5), in the presence or absence of OT, influence: (a) the gene expression of enzymes responsible for(More)
Progesterone produced by the corpus luteum (CL) is a key regulator of normal cyclical reproductive functions in the females of mammalian species. The physiological effects of progesterone are mediated by the canonical genomic pathway after binding of progesterone to its specific nuclear progesterone receptor (PGR), which acts as a ligand-activated(More)
The aim of this study was to determine the steady-state expression of 13 selected housekeeping genes in the myometrium of cyclic and pregnant cows. Cells taken from bovine myometrium on days 1-5, 6-10, 11-16 and 17-20 of the oestrous cycle and in weeks 3-5, 6-8 and 9-12 of pregnancy were used. Reverse transcribed RNA was amplified in real-time PCR using(More)
The aim of the study was to investigate progesterone receptor membrane component 1 (PGRMC1) mRNA expression in bovine corpus luteum (CL) obtained from heifers or non-pregnant cows on the following days of the estrous cycle: 1-5, 6-10, 11-16 and 17-21 (n=4/each time period). The expression of PGRMC1 mRNA, analyzed by semiquantitative RT-PCR, was the highest(More)
The aim of this study was to investigate the (1) expression of progesterone membrane component 1 (PGRMC1), serpine mRNA binding protein 1 (SERBP1) and progesterone receptor (PR) mRNA and (2) protein expression levels of PGRMC1, SERBP1 and PR isoforms A and B in the bovine myometrium during the estrous cycle and early pregnancy. Uteri from cows on days 1-5,(More)
Polychlorinated biphenyls (PCBs) are a group of persistent environmental pollutants that impair cattle reproduction. Among other effects, PCBs can disturb the intracellular mobilization of Ca(+2) in several cell types. Hence, it is possible that they disrupt the transduction of intracellular signals generated from gonadotropin (FSH/LH) receptors. In(More)
The aim of the present study was to examine the effects of luteotropic and luteolytic factors on the mRNA and protein levels of progesterone receptor isoforms A (PGRA) and B (PGRB) in the bovine endometrium. Endometrial slices from Days 6-10 and 17-20 of the oestrous cycle were treated with LH (100ngmL-1), oestradiol (E2; 1×10-8M), prostaglandin (PG) E2(More)