The content of estrogen and progesterone receptors (ER, PR) is higher in fibroid tissue than in homologous myometrium, and both receptors seem to be regulated by the levels of circulating sex steroids. Myometrial and fibroid tissues were recovered from women undergoing gynecological operations during different phases of the menstrual cycle and during treatment with an analogue of GnRH (GnRHa). ...

PURPOSE In intervillous space, thrombomodulin (TM) can be a key component of the protein C anticoagulant pathway that controls the balance between coagulation and anticoagulation/ /fibrinolysis via activation of protein C (APC). In our working hypothesis we assume that not only TM from the placenta, but also TM from myometrium might be engaged in this protective mechanism. To determine whether ...

Aberrant DNA methylation has been implicated in tumorigenesis. This study was undertaken to establish the genome-wide DNA methylation profile in uterine leiomyomas and to investigate whether DNA methylation status is altered in uterine leiomyomas. For this purpose, restriction landmark genomic scanning (RLGS) was performed on a paired sample of leiomyoma and adjacent normal myometrium. The RLGS...

Nitric oxide relaxes myometrium in a cGMP-independent manner. Although cGMP activates its cognate kinase, this is not required for the inhibitory effect of nitric oxide. Thus, nitric oxide-mediated cGMP elevation does not enjoy the same set of substrates as it does in other smooth muscles. To further understand the regulation of relaxation of uterine muscle by cGMP, we have studied the actions ...

The inhibitory impacts of RP 73401, a phosphodiesterase type 4 (PDE4) selective inhibitor of the second generation, versus rolipram, the prototypal PDE4 inhibitor, were evaluated and compared on cAMP phosphodiesterase (PDE) activity and contractility of the myometrium in nonpregnant and pregnant women. In enzymatic studies, RP 73401 and rolipram inhibited the cAMP PDE activity with significantl...

The diversity of the clinical picture and asymptomatic nature manifestations myometrial pathology cause difficulties in diagnosis. There is a lack reliable diagnostic criteria for this pathology, particular, imaging, especially with simultaneous combination adenomyosis leiomyoma.
 aim research. Determination possibility compression sonoelastography diagnosis determination its characteristi...

BACKGROUND Ghrelin is a 28-amino acid octanolyated peptide, synthesised primarily in the stomach. It stimulates growth hormone release, food intake and exhibits many other diverse effects. Our group have previously determined that ghrelin inhibited human contractility in vitro. The aim of this study therefore, was to investigate the expression of ghrelin, its receptor, the growth hormone secret...

STUDY QUESTION Are the vasoactive peptide neurokinin B (NKB) and its preferred NK3 receptor (NK3R) differentially expressed in leiomyomas compared with normal myometrium? SUMMARY ANSWER In leiomyomas, NKB is up-regulated and delocalized, while its preferred NK3R is also differentially regulated. WHAT IS KNOWN ALREADY The expression of NKB/NK3R in the central nervous system is essential for ...

BACKGROUND Uterine smooth muscle cells exhibit ionic currents that appear to be important in the control of uterine contractility, but how these currents might produce the changes in contractile activity seen in pregnant myometrium has not been established. There are conflicting reports concerning the role of voltage-gated potassium (Kv) channels and large-conductance, calcium-activated potassi...