The ovarian steroid hormones estradiol (E) and progesterone (P) play important roles in reproductive physiology and behavior. The effects of E and P are mediated by their respective receptors, estrogen receptor (ER) and progestin receptor (PR) which function as transcription factors. PR is expressed as two isoforms, full length PR-B and the N-terminally truncated PR-A, by the induction of E in ...

Estrogens act in brain to profoundly influence neurogenesis, sexual differentiation, neuroprotection, cognition, energy homeostasis, and female reproductive behavior and physiology through a variety of mechanisms, including the induction of progestin receptors (PRs). PRs are expressed as two isoforms, PR-A and PR-B, that have distinct functions in physiology and behavior. Because these PR isofo...

Human progesterone receptor (PR) contains a motif that interacts with the SH3 domain of Src and mediates rapid activation of Src and downstream MAPK (Erk-1/-2) without relying on the transcriptional activity of the receptor. Here we investigated the role and intracellular location of this nontranscriptional activity of PR. Progestin activation of Src/MAPK occurred outside the nucleus with the B...

PR-104, currently in clinical trial, is converted systemically to the dinitrobenzamide nitrogen mustard prodrug PR-104A, which is reduced selectively in hypoxic cells to cytotoxic hydroxylamine (PR-104H) and amine (PR-104M) metabolites. Here, we evaluate the roles of this reductive metabolism, and DNA interstrand cross-links (ICL), in the hypoxic and aerobic cytotoxicity of PR-104. Using a pane...

We report results from high Prandtl number turbulent thermal convection experiments. The viscous boundary layer and the Reynolds number are measured in four different fluids over wide ranges of the Prandtl number Pr and the Rayleigh number Ra, all in a single convection cell of unity aspect ratio. We find that the normalized viscous layer thickness may be represented as delta(v)/L=0.65Pr(0.24)R...

1 Progesterone receptors (PR) are critical mediators of mammary gland development and 2 contribute to breast cancer progression. Progestin-induced rapid activation of 3 cytoplasmic protein kinases leads to selective regulation of growth-promoting genes by 4 phospho-PR species. Herein, we show that phosphorylation of PR Ser81 is ck25 dependent and progestin-regulated in intact cells, but also oc...

This study was done to evaluate the frequency, intensity, and specificity of a positive pathergy reaction (PR) in Behcet's disease (BD) patients, to clarify an association between the PR and the clinical features or disease severity, and to assess whether patients with pustule formation at the venous puncture site (PFVPS) without positive PR could be regarded as a positive reaction. The PR was ...

This paper presents aspects of the coordination chemistry of mono- and divalent manganese complexes supported by the anionic tris(phosphino)borate ligand, [PhBP(i)(Pr)3] (where [PhBP(i)(Pr)3] = [PhB(CH(2)P(i)Pr2)3]-). The Mn(II) halide complexes, [PhBP(i)(Pr)3]MnCl (1) and [PhBP(i)(Pr)3]MnI (2), have been characterized by X-ray diffraction, SQUID magnetometry, and EPR spectroscopy. Compound 2 s...

STUDY OBJECTIVES Pulmonary rehabilitation (PR) improves exercise tolerance in COPD patients. Tiotropium is a once-daily, inhaled anticholinergic bronchodilator that provides sustained 24-h improvements in airflow and lung hyperinflation reduction. We hypothesized that ventilatory mechanics improvements from tiotropium would permit enhanced ability to train muscles of ambulation and therefore au...