In prostatitis

Prosta.te Ca.ncer, Estrogen has an inhibitory effect on the prostate in addition to its suppression of gonadotropin secretion by the pituitary. The three- and five-year survival rates in prostate cancer patients with metastatic disease improved when treated with DES (7) alone or along with castration. However, DES does not improve the survival rates in patients whose carcinoma is confined to the prostate. Small doses of DES (1 mg/d) appear to retard prostate cancer growth and could reduce the cardiovascular complications associated with larger doses (5 mg/d) (135) (see... 

Several studies have investigated the role of dietary factors in prostate cancer risk, but results appear inconsistent. Significant effects have not been detected for dietary soya products certain vegetables, beans, fruit, rice and seaweed appear to be protective in some studies, while another has shown no protective effect from seaweed or vegetable consumption. In addition, a number of other risk factors have been shown to be associated with an increased risk of this cancer, including meat and dairy products and carotenoids. 

Glucocorticoids have inhibitory (apoptotic) effects on lymphocyte proliferation and are used to treat leukemias and lymphomas. Estrogens (fosfestrol) are used to block the effect of androgens in prostate cancer. Progestogens (megestrol, medroxyprogesteroneacetate) have been useful for treating endometrial carcinoma, renal tumors, and breast cancer. 

ET-1 also stimulates anti-apoptotic signal cascades in fibroblasts, vascular smooth muscles and endothelial cells (via phosphatidylinositol-3-kinase and Akt/pro-tein kinase B). In prostate and ovarian cancer, upregulation of endothelin synthesis and ETA receptors has been associated with a progression of the disease. The inhibiton of ETA receptors results in a reduced tumour growth. In malignant melanoma, ETB receptors are associated with tumour progression. Endothelins can also stimulate apoptosis in stretch-activated vessels via the ETB receptor, which contrasts the above-mentioned effects. The molecular basis for these differential anti- and pro-apoptotic reactions mediated by endothelins remains elusive. 

In malignant prostate epithelial cells, auto- and paracrine release of ET-1 is a critical factor in ETA receptor-mediated proliferation [5]. In addition, the ET-1/ETa receptor axis has emerged as a potential target in prostate cancer bone metastasis... 

TRPV5 and TRPV6, also known as the epithelial Ca2+ channel or ECaC (TRPV5) and Ca2+transporter 1 or Ca2+ transporter-like (TRPV6), are the only two Ca2+-selective TRP channels identified so far. They may function in vitamin D-dependent transcellular transport of Ca2+in kidney, intestine and placenta. TRPV6 is also expressed in pancreatic acinar cells, and in prostate cancer, but not in healthy prostate or in benign prostate hyperplasia. 

In patients with breast carcinoma or prostatic carcinoma, the nurse observes for and evaluates signs indicating a response to therapy, for example, a relief of pain, an increase in appetite, a feeling of well-being. In prostatic carcinoma, the response to therapy may be rapid, but in breast carcinoma the response is usually slow. 

Boffa L.C., Scarf S., Marian M.R., Dai40nte G, Allfrey V.G., Benatti U., Morris O. L. Dihydrotestosterone as a selective cellular/nuclear localization vector for anti-gene peptide nucleic acid in prostatic carcinoma cells. Cancer Res. 2000 60 2258-2262. 

Acknowledgments The authors would like to thank the support of the Department of Defense Prostate Cancer Research Program under award number W81XWH-09-1-0584, the National Science Foundation DMR 0907453, and the UCLA Specialized Program of Research Excellence in Prostate Cancer P50 CA092131-08. 

Li Y, Hong X, Hussain M, Sarkar SH, Li R, Sarkar FH. Gene expression profiling revealed novel molecular targets of docetaxel and estramustine combination treatment in prostate cancer cells. Mol Cancer Ther 2005 4 389-98. 

Marshall, G. and Amador, E. Diagnostic usefulness of serum acid 3-glycerophosphatase activities in prostatic... 

DENIS L, MORTON M s and GRIFFITHS K (1999) Diet and its preventive role in prostatic disease , Eur Urol, 35, 377-87. 

PASCHKA A G, BUTLER R and YOUNG c Y (1998) luductiou of apoptosis in prostate cancer cell lines by the green tea component, (-)-epigallocatechin-3-gallate . Cancer Lett, 130, 1-7. 

Chen, L. et al.. Oxidative DNA damage in prostate cancer patients consuming tomato sauce-based entrees as a whole-food intervention, J. Natl. Cancer Inst., 93, 1872, 2001. 

In the NF-kB pathway with celastrol 76, the inhibition of the iKBa degradation is due to the upstream blockage of the kinase activity and not by the direct inhibition of proteasome activity. On the contrary, direct inhibition of proteasome activity was observed with celastrol 76 and pristimerin 2 in prostate cancer cells.90-92 Both triterpene QMs directly inhibited the activity of the 20S subunits of proteasome at 2.5 iM and induced the accumulation of ubiquitinated proteins over time in cells,... 

In an enlarged gland, the epithelial/stromal tissue ratio is 1 5.3 Androgens stimulate epithelial, but not stromal tissue hyperplasia. Hence, androgen antagonism does not induce a complete reduction in prostate size to normal. This explains one of the limitations of the clinical effect of 5a-reductase inhibitors. 

Stromal tissue is the primary locus of aradrenergic receptors in the prostate. It is estimated that 98% of the a-adrenergic receptors in the prostate are found in prostatic stromal tissue. Of the arreceptors found in the prostate, 70% of them are of the a1A-sub-type.5 This explains why a-adrenergic antagonists are effective for managing symptoms of BPH.6... 

The antiandrogens block androgen receptors to inhibit the action of testosterone and dihydrotestosterone in prostate... 

Other dietary factors implicated in prostate cancer include retinol, carotenoids, lycopene, and vitamin D consumption.5,6 Retinol, or vitamin A, intake, especially in men older than age 70, is correlated with an increased risk of prostate cancer, whereas intake of its precursor, [3-carotene, has a protective or neutral effect. Lycopene, obtained primarily from tomatoes, decreases the risk of prostate cancer in small cohort studies. The antioxidant vitamin E also may decrease the risk of prostate cancer. Men who developed prostate cancer in one cohort study had lower levels of l,25(OH)2-vitamin D than matched controls, although a prospective study did not support this.2 Clearly, dietary risk factors require further evaluation, but because fat and vitamins are modifiable risk factors, dietary intervention may be promising in prostate cancer prevention. 

Boccardo F, Rubagotti A, Barichello M, et al. Bicalutamide monotherapy versus flutamide plus gosrelin in prostate cancer patients Results of an Italian Prostate Cancer Project study. J Clin Oncol 1999 17 2027-2038. 

Culig Z. Role of the androgen receptor axis in prostate cancer. Urology 2003 62(5 suppl 1) 21—26. 

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