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Nathan Goodyear

The role of S-adenosyl methionine in preventing FOLFOX-induced liver toxicity: a retros... - 0 views

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    SAMe shown to lower liver toxicity in chemotherapy treatment.  SAMe could be a powerful chemotherapeutic adjuvant.  This makes since, because cancer is known to be a hypomethylated state.  Low methyl donors will reduce CBS activity and thus lower glutathione.  This will result in increased oxidative stress and inflammation in the liver.  SAMe will open the CBS activity up and increase glutathione production.
Nathan Goodyear

S-adenosylmethionine reduces the progress of... [Neurobiol Aging. 2012] - PubMed - NCBI - 0 views

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    SAMe helps to correct disordered homocysteine metabolism due to B- vitamin deficiency found in Alzheimer's disease.  SAMe show to reduce amyloid production, improve memory, decrease Tau, and reduced plaque formation.  Now, this was in a mice model, but SAMe as a methyl donor can benefit clients with dementia with minimal side effects.
Nathan Goodyear

Efficacy and tolerability of oral and intramuscular S-adenosyl- l-methionine 1,4-butane... - 0 views

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    Head to head study of SAMe and imipramine for major depression found SAMe to be equivalent in efficacy to imipramine, but with fewer side effects.
Nathan Goodyear

S-adenosylmethionine in alcoholic liver cirrhosis:... [J Hepatol. 1999] - PubMed - NCBI - 0 views

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    SAMe, at doses of 1200 mg, shown to decrease mortality rate and prolong transplantation in those with cirrhosis.  Very likely, these individuals, if tested, had low SAMe and methyl donors as well as depleted glutathione. This is a set up for low phosphotidyl choline/ethanolamine levels resulting in fat accumulation.
Nathan Goodyear

S-adenosyl-l-methionine (SAMe) as antidepressant: ... [Acta Neurol Scand Suppl. 1994] -... - 0 views

  • The efficacy of SAMe in treating depressive syndromes and disorders is superior with that of placebo and comparable to that of standard tricyclic antidepressants. Since SAMe is a naturally occurring compound with relatively few side-effects, it is a potentially important treatment for depression
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    S-adenosyl-l-methionine (SAMe) as antidepressant: meta-analysis of clinical studies.
Nathan Goodyear

S-Adenosylmethionine Inhibits the Growth of Cancer Cells by Reversing the Hypomethylati... - 0 views

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    SAMe shown to resolve the hypomethylation status of oncogenes. This allows increased genetic expression.  By improving methylation with SAMe, we can reduce oncogenic expression and thus be a useful cancer therapy adjunct.
Nathan Goodyear

S-Adenosylmethioninein alcoholic liver cirrhosis: a randomized,placebo-contr... - 0 views

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    full pdf article of previously posted article on SAMe and how it increases CBS activity to increase GSH and thus reduce liver oxidative stress and fat accumulation. SAMe also decreases IL-10 and TNF-alpha.
Nathan Goodyear

SAMe for Treatment of Depression - HealthyPlace - 0 views

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    SAMe shown to help those with symptoms of depression
Nathan Goodyear

S-Adenosyl methionine (SAMe) versus celecoxib for the treatment of osteoarthritis sympt... - 0 views

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    SAMe equivalent to celebrex for the treatment of osteoarthritis pain.
Nathan Goodyear

PsychiatryOnline | American Journal of Psychiatry | S-Adenosyl Methionine (SAMe) Augmen... - 0 views

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    SAMe, in SSRI non-responders, resulted in a 46.1% response and a 35.8% remission compared to placebo.
Nathan Goodyear

OASIS - 0 views

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    I look forward to the published results of this study as this abstract references the WHI as the "same entry" criteria.  I imagine the HRT would be the same too, but will wait to see.  There is a serious problem with proper reporting of synthetic estrogens as bioidentical estrogens and synthetic progestins as bioidentical progesterone;  Also, what is the dosage. Most individuals are massively overdosed.  This study was said to be a "landmark".  Could just be don't use synthetic hormones: which is what the WHI said.
Nathan Goodyear

Androgen Therapy in Women: A Reappraisal: An Endocrine Society Clinical Practice Guidel... - 0 views

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    data on androgen therapy in women is sparse at best.  The conclusion here is suspect: "evidence supports the short-term efficacy and safety of high physiological doses of T" for women with with hypoactive sexual desire, yet the same authors recommend against long-term therapy.  How do those 2 go together???  They don't.  Support with physiologic Testosterone when appropriate testing reveals low T and symptoms support the same.  This is a practice guideline that lacks evidence to strongly back it up because so little evidence exists.  Practice guidelines are for lazy physicians.
Nathan Goodyear

ScienceDirect - Journal of Psychiatric Research : Neuroendocrine effects of S-adenosyl-... - 0 views

  • Our results, at least in depressed men, seem to support the hypothesis of a stimulating effect of SAMe on the dopaminergic system
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    SAMe stimulates dopamine secretion in depressed men
Nathan Goodyear

Targeting estrogen receptor subtypes (ERα and ERβ) with selective ER modulato... - 0 views

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    Studies in breast cancer and prostate cancer have revealed different effects by ER alpha vs ER beta.  It is no surprise that the same effects are found in ovarian cancer.  This study found ER alpha antagonists and ER beta agonists "significantly" suppressed growth in the ovarian cancer cell lines SKOV3 and OV2008.  Also, ER alpha agonist and ER beta antagonist "significantly" increased growth in the same cell lines.  These findings point to in increased proliferation with ER alpha and decreased with ER beta.  This is consistent with breast and prostate cancer also.
wheelchairindia9

Net Neutrality: Battle to 'save the Internet' - 0 views

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    Net neutrality is one of the biggest issue debated globally by the telecom regulators and it is also in the process of finalising what will be a landmark recommendation for Indian telecom. The important aspects of Net neutrality are: Internet service providers should enable access to all content and applications regardless of the source. The Internet service provider from whom buy internet pack, should not under any circumstance be able to control how exactly use it and it's upto how you use the data. All websites can co-exist without hampering others and all websites are accessible at the same speed and no particular website of application is favoured. All web sites and content creators are treated equal, and it don't have to pay extra for faster Internet speed to a particular site/service. The concept of net neutrality doesn't exist legally but most companies have Net Neutrality is simply the Internet Freedom - Free, Fast and Open Internet for all. Net Neutrality is the principle that Internet service providers (ISPs) should give consumers access to all and every contents and application on an equal basis, treating all Internet traffic equally. Today, if there's something that makes everyone across the world "Equal" is nothing but the Internet. Equality over the Internet means, the richest man in the world has the same rights to access the Internet as the poorer. And this is what "Net Neutrality" aims at adhered to it until now. With the Internet taking the world into its folds, Internet Service Providers across the world are trying to encash this potent commodity and trying to control the traffic. Karma Healthcare KP-80 Standing Wheelchair is a compact and fully powered wheelchair designed for budget. The front-wheel drive provides agile control for the chair to negotiate various indoors and out. It comes with the innovative seat and wide range of power backrest angle adjustment (80~120 degree).
vishal Parasrampuria

How to Perform Testing of Glass and PET bottles? - 0 views

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    Some of the testing procedures are as same as Pet bottle testing. However, glass bottles don't undergo bursting tests etc. If the quality manager wants to do the same, there are specially designed machines with closed cavities, to avoid any mishap when bottle bursts.
Nathan Goodyear

Testosterone: a vascular hormone in health and disease - 0 views

  • Testosterone has beneficial effects on several cardiovascular risk factors, which include cholesterol, endothelial dysfunction and inflammation
  • In clinical studies, acute and chronic testosterone administration increases coronary artery diameter and flow, improves cardiac ischaemia and symptoms in men with chronic stable angina and reduces peripheral vascular resistance in chronic heart failure.
  • testosterone is an L-calcium channel blocker and induces potassium channel activation in vascular smooth muscle cells
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  • Animal studies have consistently demonstrated that testosterone is atheroprotective, whereas testosterone deficiency promotes the early stages of atherogenesis
  • there is no compelling evidence that testosterone replacement to levels within the normal healthy range contributes adversely to the pathogenesis of CVD (Carson & Rosano 2011) or prostate cancer (Morgentaler & Schulman 2009)
  • bidirectional effect between decreased testosterone concentrations and disease pathology exists as concomitant cardiovascular risk factors (including inflammation, obesity and insulin resistance) are known to reduce testosterone levels and that testosterone confers beneficial effects on these cardiovascular risk factors
  • Achieving a normal physiological testosterone concentration through the administration of testosterone replacement therapy (TRT) has been shown to improve risk factors for atherosclerosis including reducing central adiposity and insulin resistance and improving lipid profiles (in particular, lowering cholesterol), clotting and inflammatory profiles and vascular function
  • It is well known that impaired erectile function and CVD are closely related in that ED can be the first clinical manifestation of atherosclerosis often preceding a cardiovascular event by 3–5 years
  • no decrease in the response (i.e. no tachyphylaxis) of testosterone and that patient benefit persists in the long term.
  • free testosterone levels within the physiological range, has been shown to result in a marked increase in both flow- and nitroglycerin-mediated brachial artery vasodilation in men with CAD
  • Clinical studies, however, have revealed either small reductions of 2–3 mm in diastolic pressure or no significant effects when testosterone is replaced within normal physiological limits in humans
  • Endothelium-independent mechanisms of testosterone are considered to occur primarily via the inhibition of voltage-operated Ca2+ channels (VOCCs) and/or activation of K+ channels (KCs) on smooth muscle cells (SMCs)
  • Testosterone shares the same molecular binding site as nifedipine
  • Testosterone increases the expression of endothelial nitric oxide synthase (eNOS) and enhances nitric oxide (NO) production
  • Testosterone also inhibited the Ca2+ influx response to PGF2α
  • one of the major actions of testosterone is on NO and its signalling pathways
  • In addition to direct effects on NOS expression, testosterone may also affect phosphodiesterase type 5 (PDE5 (PDE5A)) gene expression, an enzyme controlling the degradation of cGMP, which acts as a vasodilatory second messenger
  • the significance of the action of testosterone on VSMC apoptosis and proliferation in atherosclerosis is difficult to delineate and may be dependent upon the stage of plaque development
  • Several human studies have shown that carotid IMT (CIMT) and aortic calcification negatively correlate with serum testosterone
  • t long-term testosterone treatment reduced CIMT in men with low testosterone levels and angina
  • neither intracellular nor membrane-associated ARs are required for the rapid vasodilator effect
  • acute responses appear to be AR independent, long-term AR-mediated effects on the vasculature have also been described, primarily in the context of vascular tone regulation via the modulation of gene transcription
  • Testosterone and DHT increased the expression of eNOS in HUVECs
  • oestrogens have been shown to activate eNOS and stimulate NO production in an ERα-dependent manner
  • Several studies, however, have demonstrated that the vasodilatory actions of testosterone are not reduced by aromatase inhibition
  • non-aromatisable DHT elicited similar vasodilation to testosterone treatment in arterial smooth muscle
  • increased endothelial NOS (eNOS) expression and phosphorylation were observed in testosterone- and DHT-treated human umbilical vein endothelial cells
  • Androgen deprivation leads to a reduction in neuronal NOS expression associated with a decrease of intracavernosal pressure in penile arteries during erection, an effect that is promptly reversed by androgen replacement therapy
  • Observational evidence suggests that several pro-inflammatory cytokines (including interleukin 1β (IL1β), IL6, tumour necrosis factor α (TNFα), and highly sensitive CRP) and serum testosterone levels are inversely associated in patients with CAD, T2DM and/or hypogonadism
  • patients with the highest IL1β concentrations had lower endogenous testosterone levels
  • TRT has been reported to significantly reduce TNFα and elevate the circulating anti-inflammatory IL10 in hypogonadal men with CVD
  • testosterone treatment to normalise levels in hypogonadal men with the MetS resulted in a significant reduction in the circulating CRP, IL1β and TNFα, with a trend towards lower IL6 compared with placebo
  • parenteral testosterone undecanoate, CRP decreased significantly in hypogonadal elderly men
  • Higher levels of serum adiponectin have been shown to lower cardiovascular risk
  • Research suggests that the expression of VCAM-1, as induced by pro-inflammatory cytokines such as TNFα or interferon γ (IFNγ (IFNG)) in endothelial cells, can be attenuated by treatment with testosterone
  • Testosterone also inhibits the production of pro-inflammatory cytokines such as IL6, IL1β and TNFα in a range of cell types including human endothelial cells
  • decreased inflammatory response to TNFα and lipopolysaccharide (LPS) in human endothelial cells when treated with DHT
  • The key to unravelling the link between testosterone and its role in atherosclerosis may lay in the understanding of testosterone signalling and the cross-talk between receptors and intracellular events that result in pro- and/or anti-inflammatory actions in athero-sensitive cells.
  • testosterone functions through the AR to modulate adhesion molecule expression
  • pre-treatment with DHT reduced the cytokine-stimulated inflammatory response
  • DHT inhibited NFκB activation
  • DHT could inhibit an LPS-induced upregulation of MCP1
  • Both NFκB and AR act at the transcriptional level and have been experimentally found to be antagonistic to each other
  • As the AR and NFκB are mutual antagonists, their interaction and influence on functions can be bidirectional, with inflammatory agents that activate NFκB interfering with normal androgen signalling as well as the AR interrupting NFκB inflammatory transcription
  • prolonged exposure of vascular cells to the inflammatory activation of NFκB associated with atherosclerosis may reduce or alter any potentially protective effects of testosterone
  • DHT and IFNγ also modulate each other's signalling through interaction at the transcriptional level, suggesting that androgens down-regulate IFN-induced genes
  • (Simoncini et al. 2000a,b). Norata et al. (2010) suggest that part of the testosterone-mediated atheroprotective effects could depend on ER activation mediated by the testosterone/DHT 3β-derivative, 3β-Adiol
  • TNFα-induced induction of ICAM-1, VCAM-1 and E-selectin as well as MCP1 and IL6 was significantly reduced by a pre-incubation with 3β-Adiol in HUVECs
  • 3β-Adiol also reduced LPS-induced gene expression of IL6, TNFα, cyclooxygenase 2 (COX2 (PTGS2)), CD40, CX3CR1, plasminogen activator inhibitor-1, MMP9, resistin, pentraxin-3 and MCP1 in the monocytic cell line U937 (Norata et al. 2010)
  • This study suggests that testosterone metabolites, other than those generated through aromatisation, could exert anti-inflammatory effects that are mediated by ER activation.
  • The authors suggest that DHT differentially effects COX2 levels under physiological and pathophysiological conditions in human coronary artery smooth muscle cells and via AR-dependent and -independent mechanisms influenced by the physiological state of the cell
  • There are, however, a number of systematic meta-analyses of clinical trials of TRT that have not demonstrated an increased risk of adverse cardiovascular events or mortality
  • The TOM trial, which was designed to investigate the effect of TRT on frailty in elderly men, was terminated prematurely as a result of an increased incidence of cardiovascular-related events after 6 months in the treatment arm
  • trials of TRT in men with either chronic stable angina or chronic cardiac failure have also found no increase in either cardiovascular events or mortality in studies up to 12 months
  • Evidence may therefore suggest that low testosterone levels and testosterone levels above the normal range have an adverse effect on CVD, whereas testosterone levels titrated to within the mid- to upper-normal range have at least a neutral effect or, taking into account the knowledge of the beneficial effects of testosterone on a series of cardiovascular risk factors, there may possibly be a cardioprotective action
  • The effect of testosterone on human vascular function is a complex issue and may be dependent upon the underlying androgen and/or disease status.
  • the majority of studies suggest that testosterone may display both acute and chronic vasodilatory effects upon various vascular beds at both physiological and supraphysiological concentrations and via endothelium-dependent and -independent mechanisms
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    Good deep look into the testosterone and CVD link.
Nathan Goodyear

Acute changes in 5-HT metabolism after S-adeno... [Gen Pharmacol. 1989] - PubMed - NCBI - 0 views

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    SAMe increased hippocampal serotonin levels by 300% in rat brain model.  Methylation is known to play a major role in serotonin, dopamine, and norepinephrine.
Nathan Goodyear

Low S-adenosylmethionine concentrations fo... [Clin Chem Lab Med. 2004] - PubMed - NCBI - 0 views

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    SAMe found to be low in those with Crohn's and Ulcerative colitis disease.  Is IBD a methylation disease?  Is IBD a detoxification deficiency state due to lack of methylation?
Nathan Goodyear

Influence of Oral S-Adenosylmethionine on Plasma 5-Methyltetrahydrofolate, S-Adenosylho... - 0 views

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    SAMe replacement, 400 mg, did not raise homocysteine.  But, it did increase 5-MTHF.
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