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After BR-DIM therapy, 96% of patients exhibited exclusion of the AR from the cell nucleus. Men with localized prostate cancer were treated with a specially formulated DIM capsule designed for enhanced bioavailability (BR-DIM) at a dose of 225 mg orally twice daily for a minimum of 14 days. Antineoplastic effects of cruciferous vegetables are attributable to bioactive indoles, most prominently, 3, 3’-diindolylmethane (DIM). This study aimed to investigate the effects of DIM on sperm parameters, histological structures of testicular tissues, blood testosterone (T) and estradiol 17-β (E2) in male rats. The ability to reverse PIN may delay the development of prostate cancer. It has been shown in the xenograft model of prostate cancer that Infemin inhibits tumor development due to the tumor growth rate reduction . Finally, it was demonstrated that DIM is a selective and potent inhibitor of cancer stem cells .
The study further found that nuclear ERβ2 (nERbeta2) is an independent prognostic marker for PSA failure and postoperative metastasis (POM) and the combined expression of both ERβ2 and ERβ5 can identify patients with the shortest POM-free survival. A few articles also have reported other anti-carcinogenic properties of DIM, including epigenetic modulation, anti-viral, anti-bacterial effects, and DNA methylation. In an interesting study, DIM treatment improves cardiac functions in a mouse model of cardiac hypertrophy. These results show that DIM exerts anti-inflammatory and chemopreventive effects, which may be related to its antitumor property. The anti-inflammatory effects of DIM may also be through the suppression of NF-κB activities.
DIM inhibits the proliferation of androgen-dependent human prostate cancer LNCaP cells with 70% less growing in culture and reduces secreted prostatic specific antigen (PSA) protein levels induced by dihydrotestosterone (DHT). This study characterized the effects of prostatic DIM on the androgen receptor (AR) in patients with prostate cancer. Many publications have identified effects from DIM on sex hormones, hormone receptors, including estrogen receptor and androgen receptor, and their signaling,-,,-, therefore preventing prostate cancers in men. In a study using both androgen-dependent LNCaP and androgen receptor negative DU145 prostate cancer cells, DIM-mediated G1 cell cycle arrest involves activation of the p38 MAPK and Sp1 pathways in the DU145 cells regardless of their androgen-dependence and p53 status. Recently, cruciferous vegetable intake has garnered great interest for its multiple health benefits such as anticancer, antiviral infections, human sex hormone regulation, and its therapeutic and preventive effects on prostate cancer and high grade prostatic intraepithelial neoplasia (HGPIN). In addition to effects on proliferation and apoptosis, DIM acts as an antiandrogen in prostate cancer cell lines. Our results indicate that DIM exhibits potent antiproliferative and antiandrogenic properties in androgen-dependent human prostate cancer cells.
By turning the genes on or off, androgen and AR help direct the development of male sexual characteristics. The complex in the nucleus then binds to a DNA segment in androgen-responsive genes, the androgen response element, to regulate gene transcription. The possible mechanisms by which DIM induces these effects do not involve binding to ERβ but may involve a ligand-independent mechanism by recruiting coactivators to target genes. DIM can also alter gene expression and reduce cell growth by inhibiting DNA methylation. In multiple animal models, DIM upregulates BRCA1 expression, which has antioxidant activity, and this induces Nrf2-ARE-mediated gene expression via BRCA1-dependent manner,.
Patients underwent prostate biopsy every 6 months (12-month regimen).This study was reviewed and approved by the local ethic committee of the Peoples' Friendship University of Russia. We place a special emphasis on investigations dedicated to the integrated diagnosis, treatment and prevention of PC in individual patients (predictive, preventive and personalized medicine (PPPM)). Moreover, it has a pronounced antiestrogenic effect, stimulating the production of 2-OHE1, thus improving the 2-OHE1/16α-OHE1 ratio . It is considered that these hormones directly and indirectly affect growth and differentiation of the prostate.
The vast majority of patients (12 out of 14) did not report any drug-related adverse events (86% versus 100% for placebo). Thus, we have found no correlation between AEs and group of study. Patients who received the placebo did not report any side effects. Number and percentage of patients reporting adverse events in placebo-controlled clinical trial of Infemin
A score was assigned to each prostate sample equal to the product of staining intensity and percent positively-stained cells. After a minimum of 14 days of BR-DIM therapy, DIM levels were measured in the plasma and at the time of prostatectomy. DIM levels were detectable in the prostate for 26 of 28 patients (92.9%). In the subset of 28 evaluable patients, compliance by patient diary ranged from % of intended treatment, rendering all evaluable patients compliant with therapy. A total of 28 patients were evaluable for the primary endpoint of DIM levels in the prostate. In summary, a total of 28 patients were evaluable for the primary endpoint of DIM levels in the prostate (Figure 1). Treatment duration was less than 14 days for two patients who withdrew from the study, and for one patient who discontinued therapy because of toxicity.
Whether or not finasteride promotes high-grade prostate cancer remains a subject of intense ongoing debate,. DIM may be one of the most hopeful agents in preventing HGPIN from becoming prostate cancer. Recent articles have demonstrated that DIM is a unique bifunctional hormone disruptor for both estrogen and androgen. DIM results in cell cycle arrest in androgen-sensitive LNCaP cells and androgen-insensitive C4-2B cells not only by affecting cell cycle regulatory molecules including cdks and their inhibitors but also by downregulating AR. In androgen-dependent LNCaP cells, DIM suppresses cell proliferation, inhibits DHT stimulation of DNA synthesis and endogenous PSA transcription and suppresses androgen-induced AR translocation into the nucleus. It has been shown in in vitro,- and in vivo studies, that DIM has an anti-androgen effect which downregulates AR and PSA. A separate study shows that DIM's estrogenic effects can be mediated through ERβ but not ERα activation of estrogen response element and DIM selectively activated multiple endogenous genes through ERβ.

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