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Nathan Goodyear

<i>Artesunate</i> Suppresses the Growth of Prostatic Cancer Cells through Inhibiting An... - 0 views

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    Artesunate found to have broad range of anti-cancer activity, such as pro-apoptosis attenuation of tumor growth, metastasis, and angiogenesis. This study primarily looked at the effect in a prostate cancer mouse model. It found that the artesunate down regulated androgen receptors. Now, there is debate about how and when AR and androgens play a role in prostate cancer as studies have also pointed to estrogen and ER in carcinogenesis of the prostate.
Nathan Goodyear

Effect of Finasteride on the Sensitivity of PSA for Detecting Prostate Cancer - 0 views

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    Finasteride more likely to lower PSA associated with benign prostate conditions compared to cancer of prostate.
Nathan Goodyear

Selenomethionine and α-Tocopherol Do Not Inhibit Prostate Carcinogenesis in t... - 0 views

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    In this animal study, estradiol is added to Testosterone to increase prostate carcinogenesis.  Previous rat studies have shown that adding estradiol to Testosterone, which occurs naturally, increases prostate cancer risk.  
Nathan Goodyear

Matrix metalloproteinases in the pathogenesis of estradiol-induced nonbacterial prostat... - 0 views

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    In rat model, Estradiol shown to increase inflammation in lateral lobes of the prostate.  Androgens, Testosterone > DHT, shown to inhibit this inflammatory response.  
Nathan Goodyear

The role of androgens and estrogens in the pathogenes... [J Urol. 1988] - PubMed - NCBI - 0 views

  • Testosterone can block the effect of estradiol on prostatitis, however treatment with an anti-estrogen or an aromatase inhibitor to block estrogen action does not improve prostatitis in the rat
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    Estradiol and imbalanced Testosterone:Estradiol ratio contributes to prostatitis.  In this study, with rats, aromatase inhibitors did not improve prostatitis.
Nathan Goodyear

Immunohistochemical evidence of the existence and localization of aromatase in human pr... - 0 views

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    aromatase activity is present in the prostate.  The conversion of Testosterone to Estradiol via aromatase activity has been shown to contribute to inflammation and prostate enlargement.
Nathan Goodyear

Testosterone and prostate safety. [Front Horm Res. 2009] - PubMed - NCBI - 0 views

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    Testosterone therapy is safe for the prostate.  In fact, low T is associated with increased risk of prostate cancer.  
Nathan Goodyear

Prostate cancer risk in testoster... [J Steroid Biochem Mol Biol. 2006] - PubMed - NCBI - 0 views

  • In hypogonadal men who were candidates for testosterone therapy, a 14% incidence of occult cancer was found
  • Data from all published prospective studies on circulating level of total and free testosterone do not support the hypothesis that high levels of circulating androgens are associated with an increased risk of prostate cancer
  • Indeed, high-grade prostate cancer has been associated with low plasma level of testosterone.
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    testosterone therapy does not increase prostate cancer.
Nathan Goodyear

Estrogen Receptor {beta}: Switching to a New Partner and Escaping from Estrogen -- Leun... - 0 views

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    Study shows that estradiol decreases ER beta in the prostate. ER beta is anti-inflammatory, inhibits growth, and promotes cell death: all of which would decrease risk of prostate growth and/or cancer.   We know that men increase estrogen production through increased aromatase activity, which according to this study, will decrease ER beta and the prostate associated benefits.
Nathan Goodyear

CpG hypermethylation of the promoter region inactivates the estrogen receptor... - 0 views

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    ER beta expression that is lost in prostate carcinogenesis occurs via methylation at the ER beta gene promoter sites 19CpG.  What is really interesting is that ER beta expression was present in all of the samples with BPH, but was absent in 83% of the prostate cancer samples.
Nathan Goodyear

Effects of androgens on telomerase activity in normal and malignant prostate cells in v... - 0 views

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    Androgen deprivation therapy reduces Telomerase activity in androgen dependent prostate cancer cell lines.  Conversely, Testosterone increases Telomerase activity.  In these cell lines Telomerase activity is positively associated with prostate cancer.
Nathan Goodyear

Frequent Loss of Estrogen Receptor-β Expression in Prostate Cancer - 0 views

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    loss of ER-beta expression in the prostate is associated with increased prostate carcinogenesis.
Nathan Goodyear

Phase II Study of Pomegranate Juice for Men with Rising Prostate-Specific Antigen follo... - 0 views

  • n vitro assays comparing pretreatment and posttreatment patient serum on the growth of LNCaP showed a 12% decrease in cell proliferation and a 17% increase in apoptosis (P = 0.0048 and 0.0004, respectively), a 23% increase in serum nitric oxide (P = 0.0085), and significant (P &lt; 0.02) reductions in oxidative state and sensitivity to oxidation
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    Pomegranate beneficial for Prostate health and Prostate Cancer
Nathan Goodyear

XMRV is present in malignant prostatic epithelium and is associated with prostate cance... - 0 views

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    Is prostate cancer, in part, a result of viral insult.  Study finds XMRV is highly associated with high-grade prostate cancer.
Nathan Goodyear

Men with Low Serum Cholesterol Have a Lower Risk of High-Grade Prostate Cancer in the P... - 0 views

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    not really much can be gleamed from this other than lower cholesterol i.e. < 200 is associated with high grade, gleason 8-10, prostate cancer.  No association was found with prostate cancer in general.
Nathan Goodyear

Bisphenol A Effects on Estrogen Receptor β Expression: Implications in Prosta... - 0 views

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    Bisphenol A downgregulates ER-beta in male prostate.  This would increase pro-inlfmmatory/growth through ER-alpha theoretically and has implications  in prostate health.
Nathan Goodyear

Comparative studies of the estrogen receptors be... [Am J Pathol. 2001] - PubMed - NCBI - 0 views

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    loss of ER beta in the prostate associated with increased prostate cancer.
Nathan Goodyear

The role of 5-alpha reductase inhibitors in prostate pathophysiology: Is there an addit... - 1 views

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    good review of 5-alpha reductase inhibitor and prostate pathophysiology.  Type I is increased in prostate cancer.  
Nathan Goodyear

Urological Research, Volume 15, Number 3 - SpringerLink - 0 views

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    aromatization of androstenedione to estrogen shown to play role in prostatitis, BPH, and prostate cancer.  In this study, they looked at aromatase inhibition to slow this process.
Nathan Goodyear

The Dual, Opposing Roles of Estrogen in the Prostate - Ellem - 2009 - Annals of the New... - 0 views

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    As it relates to the prostate, there is more than just androgens and estrogen levels.  There is balance.  Then there is estrogen receptors.  This article discusses the different action the ER-alph and ER-beta have on the prostate.
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