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Nathan Goodyear

Meta-analysis of Vitamin D Sufficiency for Improving Survival of Patients with Breast C... - 0 views

ar.iiarjournals.org/...1163.long

Vitamin D vitamin D cancer breast cancer survival inflammation

shared by Nathan Goodyear on 17 Sep 14 - No Cached
  • Higher serum 25(OH)D concentrations were associated with lower fatality rates in patients with breast cancer
  • Patients with the highest concentration of 25(OH)D had approximately half the fatality rate compared to those with the lowest concentration
  • According to this hypothesis, the growth of a tumor may be arrested at almost any point in the DINOMIT model by restoring a high serum 25(OH)D concentration in the organism, resulting in up-regulation of E-cadherin and restoration of a well-differentiated state
  • ...1 more annotation...
  • Laboratory studies have demonstrated anticancer effects of vitamin D metabolites on three critical phases in the development of breast tumors: differentiation, apoptosis, and angiogenesis
  • Nathan Goodyear on 17 Sep 14
     
    Higher vitamin D levels associated with lower death rates from breast cancer.  In fact, people with the highest levels of vitamin D had death rates cut in half.  The authors point to 3 ares that vitamin D has a positive effect against cancer: differentiation, apoptosis, and angiogenesis.
Nathan Goodyear

Early Detection of Head and Neck Cancer: Development of a Novel Screening Tool Using Mu... - 0 views

cebp.aacrjournals.org/...102.full

cancer biomarkers inflammation inflammatory cytokines cytokines

shared by Nathan Goodyear on 22 Sep 14 - No Cached
  • Nathan Goodyear on 22 Sep 14
     
    Article looks at proposed 25 biomarkers to screen for Head and Neck squamous cancer.  Most of these could be used for all cancers as they are inflammatory cytokines.
Nathan Goodyear

Control of Colon Cancer Development and Progression: Role of Estrogens in Colorectal Ca... - 0 views

www.medscape.com/...576817_3

colon colon cancer cancer estrogen ER beta ER-beta

shared by Nathan Goodyear on 19 Nov 13 - No Cached
  • Nathan Goodyear on 19 Nov 13
     
    Estrogens decrease colon cancer risk likely via ER beta activity.
Nathan Goodyear

Male hypogonadism and metabolic syndrome. [Andrologia. 2014] - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...25040289

low T low Testosterone low T Testosterone metabolic syndrome men male hormone hormones

shared by Nathan Goodyear on 22 Jul 14 - No Cached
  • male hypogonadism was an independent risk factor for MS (P < 0.001). We conclude that low testosterone level plays a central role in the development of metabolic syndrome
  • Nathan Goodyear on 22 Jul 14
     
    low Testosterone in men was found to be an independent risk factor for metabolic syndrome in men.
Nathan Goodyear

Diet-induced obesity and low testosterone increase neuroinflammation and impair neural ... - 0 views

www.ncbi.nlm.nih.gov/...PMC4190446

Testosterone neuroinflammation glia insulin resistance obesity diabetes brain CNS PNS inflammation low T low Testosterone TNF-alpha IL-1beta

shared by Nathan Goodyear on 28 Apr 15 - No Cached
  • both obesity and low testosterone are also risk factors for neural dysfunction, including cognitive impairment [58–61] and development of AD
  • Levels of obesity and testosterone are often inversely correlated
  • diet-induced obesity causes significant metabolic disturbances and impairs central and peripheral nervous systems.
  • ...23 more annotations...
  • both obesity and low testosterone are linked with promotion of inflammatory pathways [70–72] and exert harmful actions on the central [73–75] and peripheral [29,76] nervous systems
  • In general, obesity-related changes were worsened by low testosterone and improved by testosterone treatment; however, this relationship was not statistically significant in several instances. Further, our data suggest that a common pathway that may contribute to obesity and testosterone effects is regulation of inflammation
  • fasting blood glucose levels were independently and additively increased by GDX-induced testosterone depletion and high-fat diet
  • testosterone treatment significantly reduced fasting glucose under both the normal and high-fat diets, demonstrating potential therapeutic efficacy of testosterone supplementation
  • fasting insulin, insulin resistance (HOMA index), and glucose tolerance, low testosterone tended to exacerbate and or testosterone treatment improved outcomes.
  • testosterone status did not significantly affect body weight
  • testosterone’s effects likely do not indicate an indirect result on adiposity but rather regulatory action(s) on other aspects of metabolic homeostasis
  • Prior work in rodents has shown diet-induced obesity induces insulin resistance in rat brain [63] and that testosterone replacement improves insulin sensitivity in obese rats [64]. Our findings are consistent with the human literature, which indicates that (i) testosterone levels are inversely correlated to insulin resistance and T2D in healthy [30,65] as well as obese men [66], and (ii) androgen therapy can improve some metabolic measures in overweight men with low testosterone
  • it has been shown that TNFα has inhibitory effects on neuron survival, differentiation, and neurite outgrowth
  • Our data demonstrate that low testosterone and obesity independently increased cerebrocortical mRNA levels of both TNFα and IL-1β
  • Testosterone status also affected metabolic and neural measures
  • many beneficial effects of testosterone, including inhibition of proinflammatory cytokine expression
  • neuroprotection [80,81], are dependent upon androgen receptors, the observed effects of testosterone in this study may involve androgen receptor activation
  • testosterone can be converted by the enzyme aromatase into estradiol, which is also known to exert anti-inflammatory [82] and neuroprotective [83] actions
  • glia are the primary sources of proinflammatory molecules in the CNS
  • poorer survival of neurons grown on glia from mice maintained on high-fat diet
  • Since testosterone can affect glial function [86] and improve neuronal growth and survival [87–89], it was unexpected that testosterone status exhibited rather modest effects on neural health indices with the only significant response being an increase in survival in the testosterone-treated, high-fat diet group
  • significantly increased expression of TNFα and IL-1β in glia cultures derived from obese mice
  • testosterone treatment significantly lowered TNFα and IL-1β expression to near basal levels even in obese mice, indicating a protective benefit of testosterone across diet conditions
  • IL-1β treatment has been shown to induce synapse loss and inhibit differentiation of neurons
  • Testosterone status and diet-induced obesity were associated with significant regulation of macrophage infiltration
  • testosterone prevented and/or restored thermal nociception in both diet groups
  • a possible mechanism by which obesity and testosterone levels may affect the health of both CNS and PNS
  • Nathan Goodyear on 28 Apr 15
     
    Study points to obesity and low Testosterone contribution of neuroinflammation.  No effect of body weight was seen with TRT.  This animal model found similar positive effects of TRT in insulin sensitivity.  Obesity and low T increase inflammatory cytokine production: this study found an increase in TNF-alpha and IL-1beta and TRT reduced TNF-alpha and IL-1beta to near base-line.  Testosterone is neuroprotective and this study reviewed the small volume of evaded that pointed to benefit from estradiol.  Testosterone's effect on glial survival was positive but not significant.  Obesity and low T were found to be associated with increased macrophage infiltration in the PNS with increased TNF-alpha and IL-1beta.   Testosterone therapy improved peripheral neuropathy via its positive effects on nocicieption.
Nathan Goodyear

Sensory Processing Disorder in a Primate Model: Evidence From a Longitudinal Study of P... - 0 views

onlinelibrary.wiley.com/...full

sensory processing disorder dopamine BDNF brain derived neurotrophic factor

shared by Nathan Goodyear on 03 Nov 13 - No Cached
  • Nathan Goodyear on 03 Nov 13
     
    Good discussion of sensory processing disruption, dopamine, and BDNF.  This study specifically looked at a monkey model.
Nathan Goodyear

Interplay between lipids and branched-chain amino acids in development of insulin resis... - 0 views

www.ncbi.nlm.nih.gov/...PMC3695706

protein high diet insulin resistance metabolism obesity diabetes fatty acids essential

shared by Nathan Goodyear on 21 Oct 13 - No Cached
  • Nathan Goodyear on 21 Oct 13
     
    High branch chain amino acids can promote insulin resistance.  This study points out that long-term high protein dietary intake can actually have significant deleterious effects and lead to disease.  A high fat diet appears to be required for this effect.
Nathan Goodyear

Metabolite profiles and the risk of developing diabetes : Nature Medicine : Nature Publ... - 0 views

www.nature.com/...nm.2307.html

diabetes metabolism branch chain overload hypothesis branched chain amino acids amino acids protein isoleucine leucine valine tyrosine phenylalanine

shared by Nathan Goodyear on 21 Oct 13 - No Cached
  • Nathan Goodyear on 21 Oct 13
     
    High amino acid intake associated with 5 fold higher risk of Diabetes.  The risk required 3 out of 5 amino acids isoleucine, leucine, valine, tyrosine, and phenylalanine.
Nathan Goodyear

ω-3 Fatty Acid Supplementation as a Potential Therapeutic Aid for the Recover... - 0 views

advances.nutrition.org/...268.full

omega 3 DHA EPA fish oil TBI traumatic brain injury concussions concussion brain injury

shared by Nathan Goodyear on 30 Aug 15 - No Cached
  • There is a growing body of preclinical literature suggesting that ω-3 FAs, and DHA in particular, may play a therapeutic role in mTBI
  • the potential for ameliorating or possibly even preventing the complications associated with concussions
  • DHA is the predominant ω-3 FA present in the brain, and, consistent with this finding, DHA, and not EPA, has been demonstrated to be critical for brain development and cognitive function throughout life
  • ...7 more annotations...
  • the concentration of EPA in the brain is negligible (77–80), suggesting that EPA plays a limited role in mediating the beneficial effects of LCPUFA supplementation on mTBI pathology
  • the current state of the science regarding LCPUFA supplementation for the treatment of concussion is based primarily on animal models
  • there is evidence that the amount of DHA in brain tissue is decreased after mTBI (65, 66), suggesting an elevated need for DHA in mTBI recovery.
  • the well-established role of DHA in supporting the structure and function of the brain throughout the lifespan (26, 27, 46, 47, 53) provides encouragement that LCPUFAs may also prove beneficial in the context of concussion recovery.
  • no therapies are currently available to aid the recovery from this injury
  • Previously discussed reports outlining the use of ω-3 FAs in the recovery from severe TBIs (reviewed in Ref. 92) described the use of very-high doses of LCPUFAs (16.2 g/d EPA plus DHA) in the recovery of these patients
  • Within the context of mTBIs/concussions, translating a DHA intake used in several rat studies of mTBI recovery (40 mg ⋅ kg−1 ⋅ d−1 DHA) (57, 63, 64) using body surface area conversion methods (93) amounts to an estimated human intake of 387 mg/d DHA
  • Nathan Goodyear on 30 Aug 15
     
    nice review of the evidence of n-3, particularily DHA, in concussions and concussion recovery.
Nathan Goodyear

Urinary Estrogens and Estrogen Metabolites and Subsequent Risk of Breast Cancer among P... - 0 views

cancerres.aacrjournals.org/...696.full

estrogen metabolites estrogen metabolism ER estrogen receptors ROS hormones cancer breast cancer

shared by Nathan Goodyear on 07 Oct 15 - No Cached
  • both 2- and 4-catechol estrogen metabolites bind to the ER with affinities comparable with estradiol, 4-catechol estrogen metabolites have lower dissociation rates than estradiol and an enhanced ability to upregulate ER-dependent processes
  • 2-catechol estrogen metabolites act as either weak mitogens (39) or weak inhibitors of cell proliferation
  • While 16α-hydroxyestrone binds to the ER with lower affinity than estradiol, it binds covalently (41) and leads to a constitutively activated ER
  • ...15 more annotations...
  • 4-hydroxyestradiol and 16α-hydroxyestrone increasing proliferation and decreasing apoptosis in a manner similar to estradiol; however, these effects were achieved only at concentrations 10-fold higher than estradiol (39). In contrast, 2-hydroxyestradiol did not have substantial proliferative or antiapoptotic effects
  • In our study, the associations with both 2-hydroxyestrone and 16α-hydroxyestrone were nonsignificantly inverse and we did not observe a consistent trend or significant associations between the 2-hydroxyestrone:16α-hydroxyestrone ratio and breast cancer risk
  • Ratios of the 3 hydroxylation pathways were not significantly associated with risk although the 2:16-pathway and 4:16-pathway ratios were suggestively inversely associated
  • a significant inverse association with the ratio of parent estrogens to estrogen metabolites
  • several potentially estrogenic and genotoxic mechanisms
  • Estrogen metabolites also can be genotoxic
  • Catechol estrogens can be oxidized into quinones and induce DNA damage directly through the formation of DNA adducts, or indirectly via redox cycling and generation of reactive oxygen species
  • the oxidized forms of the catechol estrogens differ in their ability to damage DNA through adducts, with oxidized 2-catechols forming stable and reversible DNA adducts and oxidized 4-catechols forming unstable adducts, which lead to depurination and mutations
  • 2- and 4-catechols have been shown to produce reactive oxygen species and induce oxidative DNA damage
  • act independently from the ER
  • 16α-Hydroxyestrone also may be genotoxic
  • While the catechol estrogens have estrogenic and genotoxic potential, the methylated catechol estrogens, which are catechol estrogens with one hydroxyl group methylated, have been hypothesized to lower the risk of breast cancer
  • The suggested mechanisms are indirect, by decreasing circulating levels of catechol estrogens and thereby the opportunity for catechols to exert genotoxic or proliferative effects, or direct, by inhibiting tumor growth and inducing apoptosis
  • the balance between phase I (oxidation) and phase II (methylation) metabolism of estrogen may be important in hormonally related cancer development.
  • Despite the estrogenic and genotoxic potential of many of the estrogen metabolites, we only observed a significantly increased breast cancer risk with one estrogen metabolite, 17-epiestriol, which has particularly strong estrogenic activity and binds to both ERα and ERβ with an affinity comparable with estradiol
  • Nathan Goodyear on 07 Oct 15
     
    review of estrogen metabolites and breast cancer risk in premenopausal women.
wheelchairindia9

Recliner Wheelchair - 0 views

disabilityproduct.in/...RECLINING-WHEELCHAIR

Height Adjustable Armrests Karma VIP 515 Wheelchair for easy transfer to bed Recliner Wheelchair shift pressure and reduce bedsores sliding up the back upholstery Vip 515 Wheelchair

shared by wheelchairindia9 on 05 Aug 15 - No Cached
  • wheelchairindia9 on 05 Aug 15
     
    Reclining Back Wheelchair( bed cum wheelchair ) which are suitable for indoor as well as outdoor purposes. These wheel chairs are manufactured using high quality material to ensure high strength and durability. Wheelchairs are available in foldable frames and are capable for maximum weight. Reclining wheelchairs are available in standard folding frames with extended head supports and seat widths up to 24" wide. The recline mechanism is attendant operated with levers much like a bicycle brake lever. The levers operate hydraulic (pump) mechanisms for a smooth adjustment. Using this Recliner Wheelchair mechanism, the chair back can easily and frequently be positioned to any angle. Reclining Wheelchair 609 GC: Reclining Wheelchair 609 GC is one of the multipurpose chairs which boast of features like reclining, inbuilt commode, customized armrest and footrest and foldable nature of the chair. Reclining Wheelchair 609 GC Features: The wheelchair can be folded within very easily within seconds, making it easier during travels and outings. The backrest of the chair can be easily reclined, giving the user the freedom to relax by not moving up from the chair. The footrest can be inclined and adjusted so as to make the user comfortable during reclining or otherwise. A well paded thigh support is an add-on to the footrest. The front and rear wheels of the chair are designed and placed in such a way so as to support the reclining of the user, making it a very safe and friendly wheelchair. The inbuilt commode has its seat just underneath the main seat of the chair; it can be used by just removing the main seat. The Wheelchair can also be folded from between by just removing the commode and the chair's seat. This Wheelchair's functionality gives the user total freedom. Easy to fold and unfold within seconds. Reclining Wheelchair 609 GC Measurements: Frame Style : Foldable Frame Material : MS Chrome Plated open position wheel to wheel width in : 26" (inch
wheelchairindia9

Golden Motor Wheelchair - 0 views

disabilityproduct.in/...GM-LITE-POWER-WHEELCHAIR

Power Chair Motors Enable Independent Mobility limited upper body strength Golden Motor Wheelchair With large motors and frames easy and healthy movement Bronco Power Wheelchair

shared by wheelchairindia9 on 15 Sep 15 - No Cached
  • wheelchairindia9 on 15 Sep 15
     
    GM LITE POWER WHEELCHAIR GM Lite Brushless Power Wheelchair with Batteries is a revolutionary light weight power wheelchair using brushless motor. It is the most economic power wheelchair without sacrificing safety & durability. The wheelchair promotes pressure redistribution, reduces downward sliding and helps maintain good posture. Specifications: 10 times longer life Lightest - 23 kg 5 year long life, safe LiFePO4 battery (10ah) High efficiency brushless hub motor 5 seconds folding and unfolding Easy to carry Load : 120 kg Speed : 8km/hr Range: 15 km Slope : 12% 24V180W brushless 8-inch gear hub motor
Nathan Goodyear

Elderly men over 65 years of age with late-onset hypogonadism benefit as much from test... - 0 views

www.ncbi.nlm.nih.gov/...PMC4392031

low T low Testosterone Testosterone men male hormone hormones late onset hypogonadism hypogonadism

shared by Nathan Goodyear on 21 May 15 - No Cached
  • The benefits of restoring serum testosterone in men with LOH were not significantly different between men older than 65 years of age and younger men. There were no indications that side effects were more severe in elderly men. The effects on prostate and urinary function and hematocrit were within safe margins.
  • obesity, but also impaired general health, are the more common causes of low testosterone in aging men
  • Severe LOH is associated with substantially higher risks of all-cause and cardiovascular mortality,
  • ...30 more annotations...
  • advanced age, obesity, a diagnosis of metabolic syndrome, and poor general health status were predictors of LOH
  • Diabetes mellitus was correlated with hypogonadism in most studies
  • coronary heart disease, hypertension, stroke, and peripheral arterial disease did not predict hypogonadism, they did correlate with the incidence of low testosterone
  • LOH can be defined by the presence of at least three sexual symptoms associated with a total testosterone level of less than 11 nmol/L (3.2 ng/mL) and a free testosterone level of less than 220 pmol/L (64 pg/mL)
    • Nathan Goodyear
      Nathan Goodyear on 27 May 15
       
      the European Male Aging study defined low T as total < 320 ng/dl and free < 64 pg/ml.  
  • Mean weight decreased
  • Waist circumference decreased
  • Total cholesterol decreased
  • Low-density lipoprotein decreased
  • Triglycerides decreased
  • High-density lipoprotein (HDL) increased
  • ratio of total cholesterol to HDL improved
  • Prostate volume increased
  • PSA increased
  • The benefits for men older than 65 years of age were compared with those of younger men, and the improvements in body weight, metabolic factors, psychological functioning, and sexual functioning were of the same magnitude in both age groups
  • weight loss was progressive over the 6-year period, effects of testosterone on lipids and on psychological and sexual functioning reached a plateau after approximately 3 years and these effects were sustained
  • Effects of testosterone on hematopoiesis, on the prostate, and on bladder function were not more severe in older men than in younger men
  • observe a mild increase in prostate volume and serum PSA over time, which is a normal finding in aging men. Maybe somewhat surprising, postvoiding residue and the IPSS did not deteriorate with aging but showed a degree of improvement
  • the severity of the metabolic syndrome is associated with the severity of lower urinary tract symptoms
  • The symptoms of the metabolic syndrome improve upon testosterone treatment and testosterone may thus have a favorable effect on lower urinary tract symptoms
  • it seems reasonable to conclude that the risks of testosterone administration to elderly men are not disproportionately higher in elderly men than in younger men.
  • Despite evidence to the contrary, physicians still harbor a wrongful association between testosterone and the development of prostate pathology (prostate cancer and benign prostate hyperplasia)
  • Not surprisingly, the incidence of prostate cancer was higher in older men; however, it was lower than expected in both groups
  • These observations suggest that the incidence of prostate cancer in patients receiving testosterone therapy, both in the younger and in the older group, was not greater than in the general population not receiving testosterone treatment
  • The historical fear that raising testosterone levels will result in more prostate cancer has been dispelled, particularly by the work of Abraham Morgentaler
  • Higher serum testosterone levels fail to show an increased risk of prostate cancer, and supraphysiological testosterone does not increase prostate volume or PSA in healthy men
  • This apparent paradox is explained by the "saturation model,"
  • Recent studies indicate no increased risk of prostate cancer among men with serum testosterone in the therapeutic range
  • In the present observational study, no cases of major adverse cardiovascular events occurred.
  • the benefits of testosterone therapy are fully achieved only by long-term treatment
  • To achieve maximal benefits, good patient adherence is a prerequisite
  • Nathan Goodyear on 21 May 15
     
    Study finds new difference in Testosterone benefits and/or side effects between men < 65 with low T and men > 65 with low T.
Nathan Goodyear

Telomerase reactivation reverses tissue degeneration in aged telomerase-deficient mice ... - 0 views

www.nature.com/...nature09603.html

Telomere aging anti-aging telomerase bioidentical

shared by Nathan Goodyear on 08 Dec 10 - No Cached
  • marked reversal of systemic degenerative phenotypes in adult mice observed here support the development of regenerative strategies designed to restore telomere integrity.
  • Nathan Goodyear on 08 Dec 10
     
    Telomere lengthening reverses tissue degeneration; true anti-aging
Nathan Goodyear

Mitochondria in the diabetic heart. [Cardiovasc Res. 2010] - PubMed result - 0 views

www.ncbi.nlm.nih.gov/...20639213

mitochondria heart disease diabetes

shared by Nathan Goodyear on 14 Jan 11 - No Cached
  • abnormalities in cardiomyocyte mitochondrial energetics appear to contribute substantially to the development of cardiac dysfunction in diabetes
  • Nathan Goodyear on 14 Jan 11
     
    Mitochondria in the diabetic heart.
Nathan Goodyear

Mitochondrial medicine for aging and neurodegenera... [Neuromolecular Med. 2008] - PubM... - 0 views

www.ncbi.nlm.nih.gov/...18566920

mitochondrial medicine aging neurodegeneratve disease

shared by Nathan Goodyear on 07 Feb 11 - No Cached
  • This article discusses critical issues of mitochondria causing dysfunction in aging and neurodegenerative diseases, and discusses the potential of developing mitochondrial medicine, particularly mitochondrially targeted antioxidants, to treat aging and neurodegenerative diseases.
  • Nathan Goodyear on 07 Feb 11
     
    Great review of mitochondrial medicine to treat age-related and neurodegenerative disease
Nathan Goodyear

Coenzyme Q10 as a possible treatment for neurodege... [Free Radic Res. 2002] - PubMed r... - 0 views

www.ncbi.nlm.nih.gov/...12069110

coenzyme q10 CoQ10 Huntington's disease neurodegenerative

shared by Nathan Goodyear on 07 Feb 11 - No Cached
  • CoQ10 can significantly extend survival, delay motor deficits and delay weight loss and attenuate the development of striatal atrophy in a transgenic mouse model of HD
  • Nathan Goodyear on 07 Feb 11
     
    CoQ10 shown to shown to slow progression of the neurodegenerative disease: Huntington's disease
Nathan Goodyear

Development of protocols for the application of salivary steroid analysis to field cond... - 0 views

onlinelibrary.wiley.com/...abstract

saliva salivary testing steroid hormone hormones

shared by Nathan Goodyear on 18 Jan 11 - No Cached
  • Our work confirms the feasibility of collecting samples for salivary steroid assay in field situations
  • Nathan Goodyear on 18 Jan 11
     
    salivary steroid testing
Nathan Goodyear

Elevated C-reactive protein and homocysteine value... [Atherosclerosis. 2003] - PubMed ... - 0 views

www.ncbi.nlm.nih.gov/...12535752

hypothyroidism hypothyroid CRP

shared by Nathan Goodyear on 01 Feb 11 - No Cached
  • This is the first paper to show that CRP values increase with progressive thyroid failure and may count as an additional risk factor for the development of coronary heart disease in hypothyroid patient
  • Nathan Goodyear on 01 Feb 11
     
    inflammation, CRP, associated with hypothyroidism
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