Both erectile dysfunction (ED) and lower urinary tract symptoms (LUTS)/benign prostatic hyperplasia (BPH) are common in the aging male. Numerous clinical trials have demonstrated the efficacy and safety of phosphodiesterase type 5 inhibitors (PDE5-Is) for treating LUTS/BPH with/without ED. However, the influence of BPH on prostatic PDE5 expression has never been studied. A testosterone-induced ...

CCAAT/enhancer-binding protein (C/EBP ) is a nuclear transcription factor that regulates cellular growth and differentiation. In this study we demonstrate that C/EBP gene expression is differentially regulated in rat androgen-dependent tissues and human prostate cancer. C/EBP messenger RNA (mRNA) levels were very low in adult rat ventral prostate, epididymis, and testis. In ventral prostate and...

BACKGROUND AND AIM During prostate development, mesenchymal-epithelial interactions regulate organ growth and differentiation. In adult prostate, stromal-epithelial interactions are important for tissue homeostasis and also play a significant role in prostate cancer. In this study we have identified molecules that show a mesenchymal expression pattern in the developing prostate, and one of thes...

The initiation of protein synthesis by ribosomal particles of rat ventral prostate was studied by measuring ribosomal binding of an initiator (35-S)methionyl-tRNAf. The binding activity is dependent on ribosomes, GTP, and a prostate cytosol protein fraction. The 40S but not the 60S ribosomal subunit particles are active. The cytosol activity decreases rapidly within one hour after the rat is ca...

Chronic inflammation in the prostate, seen as infiltration of inflammatory cells into the prostate gland in histological samples, affects approximately half the male population without indication of prostate disease, and is almost ubiquitous in patients diagnosed with benign prostate hyperplasia and cancer. Several studies have demonstrated the gram-positive bacterium Propionibacterium acnes to...

AXC/SSh rat prostate cancer cells elaborate heat-sensitive, heparin-binding mitogens which include members of the fibroblast growth factor (FGF)-like family of growth factors. The quantity of FGF-like growth factors, relative to total growth factor production, was cell line specific as was prostate cancer cell response to secreted or the prototypic mitogens basic FGF (bFGF), acidic FGF (aFGF), ...

Pigment epithelium-derived factor (PEDF) is a potent inhibitor of angiogenesis but whether it has additional effects on the tumor microenvironment is largely unexplored. We show that overexpression of PEDF in orthotopic MatLyLu rat prostate tumors increased tumor macrophage recruitment. The fraction of macrophages expressing inducible nitric oxide synthase, a marker of cytotoxic M1 macrophages,...

In order to confirm the relationship between sex hormone administration and glutathione-peroxidase (GSH-PO) in the rat ventral prostate, the levels of GSH-PO mRNA, GSH-PO activitM and Iipid peroxide (TBA) value in the ventral prostate were investigated. Male Cij:CD(SD)IGS rats were divided into six experimental groups. Group 1 consisted o'f intact controls. In group 2, rats were sacrificed two ...

Polyclonal antibodies against semenogelin (SG) isolated from human seminal vesicle secretion and acid phosphatase (PAP), beta-microseminoprotein (beta-MSP), and Prostate-Specific Antigen (PSA) derived from human prostatic fluid, as well as a monoclonal antibody against beta-MSP were used for immunocytochemical detection of the respective antigens in different organs from different species. SG i...

Muscarinic cholinoceptor subtypes in the rat prostatic membrane were characterized by using [3H]-methyl-quinuclidinyl benzilate (QNB) in ligand binding studies. [3H]-Methyl-QNB saturation experiments showed the existence of a homogeneous population of binding sites with a high affinity (KD value) of 0.24 +/- 0.04 nM and a maximum binding site number (Bmax) of 219 +/- 65 fmol/mg protein. Inhibit...