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Nathan Goodyear

Oxidative Stress and Stress-Activated Signaling Pathways: A Unifying Hypothesis of Type... - 0 views

edrv.endojournals.org/...599.long

free radicals oxidative stress damage inflammation type II DM alpha lipoic acid alpha-lipoic-acid diabetes

shared by Nathan Goodyear on 02 Aug 12 - No Cached
  • In patients with diabetes, LA levels are reduced (48, 74, 103). LA has long been used for the treatment of diabetic neuropathy in Germany
  • evidence indicates that it increases insulin sensitivity in patients with type 2 diabetes
  • LA has been shown to 1) quench free radicals, 2) prevent singlet oxygen-induced DNA damage, 3) exhibit chelating activity, 4) reduce lipid peroxidation, 5) increase intracellular glutathione levels, and 6) prevent glycation of serum albumin (73, 74). LA is able to reduce oxidative stress-mediated NF-κB activation in vitro (74, 108, 109) and in patients with type 2 diabetes
  • ...2 more annotations...
  • Activation of NF-κB can also be blocked by several other thiol-containing antioxidants including N-acetyl-l-cysteine (NAC)
  • Other clinically available antioxidants reported to have antiinflammatory, antioncogenic, and/or antiatherogenic properties that have been shown to block the activation of NF-κB include resveratrol (115, 116), (-)-epicatechin-3-gallate (117), pycnogenol (118), silymarin (119), and curcumin (120)
  • Nathan Goodyear on 02 Aug 12
     
    Great read!  If you want to see how free radicals and oxidative stress contribute to inflammation and disease (DM in this case), read this article.
Nathan Goodyear

ERβ Impedes Prostate Cancer EMT by Destabilizing HIF-1α and Inhibiting VEGF-M... - 0 views

www.sciencedirect.com/...S1535610810000826

prostate cancer 3-beta androstanediol male hormone hormones ER HIF-1alpha VEGF estrogen receptor receptors ER beta ER-beta

shared by Nathan Goodyear on 21 Jan 14 - No Cached
  • Loss of ERβ1 expression also resulted in a significant increase in migration and invasion (Figure 2F), functions characteristic of an EMT
  • we hypothesized that ERβ functions as a “gatekeeper” of the epithelial phenotype
  • breast and prostate are different with respect to ER expression and function
  • Nathan Goodyear on 21 Jan 14
     
    The process of androgen deprivation therapy needs to be re-evaluated.  Why?  First, the CVD side effects associated with the androgen depletion.  Second, the depletion of 3 beta androstanediol that has been shown to bind to ER beta and inhibit growth.  As in this study that finds that ER beta activity slows prostate cancer through destabilizing of HIF-1 alpha and by inhibiting VEGF.
Nathan Goodyear

Onset of effects of testosterone treatment and time span until maximum effects are achi... - 0 views

www.eje-online.org/...675.full

low T Testosterone treatment replacement timeline span time men male hormone hormones

shared by Nathan Goodyear on 13 May 14 - No Cached
  • Nathan Goodyear on 13 May 14
     
    This was a meta-analysis looking at the time frame of effects by Testosterone.  For most, positive effects are seen at 3-6 weeks, but the majority maximum benefits not seen for 3-6 months.  A realistic timeline is 3-4 months to assess physiologic benefit of Testosterone therapy in those with low T.  That is the key--that they have document low T.
Nathan Goodyear

Desiccated Thyroid Extract Compared With Levothyroxine in the Treatment of Hypothyroidi... - 0 views

press.endocrine.org/...jc.2012-4107

hypothyroid hypothyroidism thyroid T4 T3 hormones metabolism

shared by Nathan Goodyear on 24 Sep 14 - No Cached
  • Our study has shown DTE therapy caused modest weight loss, and nearly half (48.6%) of the study patients expressed preference for DTE over l-T4
  • our study showed significantly higher TSH in the DTE-treated group, which suggests that the improvement observed in the DTE-treated group is not mediated through the changes in TSH levels
  • Nathan Goodyear on 24 Sep 14
     
    Study finds desiccated thyroid (armour thyroid) was associated with great weight loss, mood improvement than T4 alone.  Desiccated thyroid was preferred by patients in the study.  Conversion rate was 100 mcg T4 to 88 mg desiccated thyroid.
Nathan Goodyear

Salivary testosterone: a reliable approach to the ... [Clin Endocrinol (Oxf). 2007] - P... - 0 views

www.ncbi.nlm.nih.gov/...17953627

testosterone salivary saliva testing bioidentical hormones hormone

shared by Nathan Goodyear on 22 Nov 10 - No Cached
  • Our data showed that Sal-T is a reliable marker of testosterone bioavailability. The results support the inclusion of this biomarker as a noninvasive approach in the diagnosis of male androgen deficiency.
  • A cut-off value of Sal-T < or = 0.195 nm showed 100% sensibility and specificity to rule out hypogonadism.
  • Nathan Goodyear on 22 Nov 10
     
    Salivary testosterone: a reliable approach to the diagnosis of male hypogonadism.
Nathan Goodyear

Comparison of physical and emotional side effects ... [Menopause. 2002 Jul-Aug] - PubMe... - 0 views

www.ncbi.nlm.nih.gov/...12082361

progesterone hormones bioidentical

shared by Nathan Goodyear on 04 Nov 10 - No Cached
  • MPA users reported more vaginal bleeding and breast tenderness than progesterone users.
  • he lesser side effects of the micronized progesterone-containing regimen suggest that some women may prefer it to an MPA-containing regimen.
Nathan Goodyear

C-reactive protein, the metabolic syndrome, and pr... [Circulation. 2004] - PubMed result - 0 views

www.ncbi.nlm.nih.gov/...15262834

CRP metabolic syndrome cardiovascular disease

shared by Nathan Goodyear on 11 Feb 11 - No Cached
  • Elevated CRP levels are related to insulin resistance and the presence of the MetS, especially in women
  • both CRP and MetS are independent predictors of new CVD events.
  • Nathan Goodyear on 11 Feb 11
     
    elevated CRP helps predict metabolic syndrome and cardiovascular disease
Nathan Goodyear

TACA Talk About Curing Autism - Gluten-free, Casein-free (GFCF) Diet - Hidden Sources o... - 0 views

gfcf-diet.talkaboutcuringautism.org/hidden-sources-of-gluten.htm

Gluten sensitivity sources source Celiac

shared by Nathan Goodyear on 08 Feb 11 - No Cached
  • Hidden Sources of Gluten
  • Nathan Goodyear on 08 Feb 11
     
    Hidden Sources of Gluten
Nathan Goodyear

Occupational Safety and Health Guideline for Xylene - 0 views

www.osha.gov/...recognition.html

xylene

shared by Nathan Goodyear on 23 Feb 11 - No Cached
  • * Signs and symptoms of exposure
  • EXPOSURE SOURCES AND CONTROL METHODS
  • Nathan Goodyear on 23 Feb 11
     
    everything you wanted to know about the toxin xylene
Nathan Goodyear

ScienceDirect - Journal of Functional Foods : Effects of l-theanine on attention and re... - 0 views

www.sciencedirect.com/...S1756464611000351

l-theanine attention anxiety

shared by Nathan Goodyear on 08 Jun 11 - No Cached
  • Results evidently demonstrated that l-theanine clearly has a pronounced effect on attention performance and reaction time response in normal healthy subjects prone to have high anxiety.
  • Nathan Goodyear on 08 Jun 11
     
    l-Theanine for attention and anxiety
Nathan Goodyear

Obese Americans now outweigh the merely overweight | Reuters - 0 views

www.reuters.com/...sity-usa-idUSTRE50863H20090109

obese overweight americans statistics obesity weight loss

shared by Nathan Goodyear on 15 Apr 11 - No Cached
  • Numbers posted by the National Center for Health Statistics show that more than 34 percent of Americans are obese, compared to 32.7 percent who are overweight. It said just under 6 percent are "extremely" obese.
  • More than one-third of adults, or over 72 million people, were obese in 2005-2006, the NCHS said in its report
  • In May, the CDC reported that 32 percent of U.S. children fit the definition of being overweight, 16 percent were obese and 11 percent were extremely obese.
  • Nathan Goodyear on 15 Apr 11
     
    obesity in America
Nathan Goodyear

Heavy Metal-induced Immunotoxicity and Its Mechanisms | ResearchGate - 0 views

www.researchgate.net/...unotoxicity_and_Its_Mechanisms

heavy metal immunotoxicity

shared by Nathan Goodyear on 28 Mar 11 - No Cached
  • Heavy Metal-induced Immunotoxicity and Its Mechanisms
  • Nathan Goodyear on 28 Mar 11
     
    Heavy Metal-induced Immunotoxicity and Its Mechanisms
Nathan Goodyear

Depression and risk of sudden cardiac death and co... [J Am Coll Cardiol. 2009] - PubMe... - 0 views

www.ncbi.nlm.nih.gov/...19281925

antidepressants depression risk cardiovascular disease

shared by Nathan Goodyear on 06 Apr 11 - No Cached
  • Although antidepressant use might be a marker of worse depression, its specific association with SCD merits further study.
  • Nathan Goodyear on 06 Apr 11
     
    antidepressants increase sudden cardiac death and are marker for worse depression
Nathan Goodyear

Curcumin-induced suppression of adipogenic differentiation is accompanied by ... - 0 views

ajpcell.physiology.org/...C1510.abstract

curcumin inflammation obesity diabetes

shared by Nathan Goodyear on 28 Apr 11 - No Cached
  • Curcumin, a polyphenol found in the rhizomes of Curcuma longa, improves obesity-associated inflammation and diabetes in obese mice.
  • Curcumin also suppresses adipocyte differentiation
  • curcumin-induced suppression of adipogenesis
  • Nathan Goodyear on 28 Apr 11
     
    Curcumin reduces inflammation associated with obesity and Diabetes
Nathan Goodyear

Colonic CD8 and γδ T-cell infiltration with epithelial damage in children wit... - 0 views

www.jpeds.com/...abstract

autism inflammation gut gastrointestinal GI ASD spectrum disorders

shared by Nathan Goodyear on 28 Jun 11 - No Cached
  • suggesting a predominantly TH2 response.
  • mmunohistochemistry confirms a distinct lymphocytic colitis in autistic spectrum disorders
  • This is consistent with increasing evidence for gut epithelial dysfunction in autism.
  • Nathan Goodyear on 28 Jun 11
     
    evidence of gut inflammation and epithelial dysfunction in children with Autism
Nathan Goodyear

Which Patients Do Not Require a GH Stimulation Test for the Diagnosis of Adult GH Defic... - 0 views

press.endocrine.org/...jcem.87.2.8216

HGH GH human growth hormone growth hormone IGF-1

shared by Nathan Goodyear on 04 Nov 14 - No Cached
  • Four studies have reported that the probability of GHD (peak GH criteria ranging from < 2.3 to < 5 μg/liter) in patients with three to four PHDs ranges from 91% to 100%
  • 95% accuracy by the presence of either three or more PHDs or a serum IGF-I concentration less than 84 μg/lite
  • adult GHD could be predicted with 95% accuracy by the presence of either three or four PHDs or a serum IGF-I concentration less than 84 μg/liter
  • ...5 more annotations...
  • Hypopituitary adults with GHD have been reported to have normal serum IGF-I levels in 37–70% of patients in various studies (5, 9, 18, 21, 22). This is owing in part to the fact that multiple factors regulate serum IGF-I concentrations including nutritional status; hepatic and renal function; and circulating concentrations of thyroid hormone, androgens, and estrogens
  • changes in concentrations of IGF-binding proteins (IGFBPs) influence the total concentration of IGF-I in plasma
  • Among patients with an IGF-I sd score above −1 in the present study, 46% had a peak GH less than 2.5 μg/liter and 67% had a peak GH less than 5 μg/liter.
  • In summary, adult GHD can be predicted with 95% accuracy by the presence of either three or four PHDs or a serum IGF-I concentration less than 84 μg/liter
  • We propose that adult patients with three or four PHDs (three or four of the following deficiencies: TSH, ACTH, gonadotropins [LH and/or FSH], and AVP [central diabetes insipidus]) do not require a GH stimulation test to make the diagnosis of adult GHD
  • Nathan Goodyear on 04 Nov 14
     
    Insulin Tolerance Test is the gold standard for HGH diagnosis, but this an unpopular test do to long list of side effects.  This study finds a 95% accuracy for IGF-1 less than 84 with 3 or more coexisting pituitary hormone deficiencies.
Nathan Goodyear

International Journal of Impotence Research - Mechanisms of action of PDE5 inhibition i... - 0 views

www.nature.com/...3901205a.html

ED PDE5 PDE5 inhibitors erectile dysfunction impotence men male NO

shared by Nathan Goodyear on 08 Sep 14 - No Cached
  • Nitric oxide (NO) is produced from oxygen and L-arginine under the control of nitric oxide synthase (NOS)
  • Cyclic GMP is the intracellular trigger for penile erection
  • PDE5 is the predominant phosphodiesterase in the corpus cavernosum
  • Nathan Goodyear on 08 Sep 14
     
    Nice review of the mechanism of action of PDE5 inhibitors and ED.
Nathan Goodyear

Comparisons of normal saline and lactated Ringer's resuscitation on hemodynamics, metab... - 0 views

www.ncbi.nlm.nih.gov/...PMC4029282

IV fluids lactated ringers normal saline LR NS

shared by Nathan Goodyear on 03 Jul 18 - No Cached
  • NS contains 154 mM Na+ and Cl-, with an average pH of 5.0 and osmolarity of 308 mOsm/L.
  • LR solution has an average pH of 6.5, is hypo-osmolar (272 mOsm/L), and has similar electrolytes (130 mM Na+, 109 mM Cl-, 28 mM lactate, etc.) to plasma
  • hyperchloremic acidosis
  • ...26 more annotations...
  • LR’s acid base balance is superior to that of NS’s
  • There were no significant differences between LR and NS groups in fibrinogen concentrations or platelet count
  • Total protein dropped
  • no significant differences in Hct (Table  1) or total protein between LR and NS groups
  • Bicarbonate HCO3- levels were decreased by hemorrhage but returned to pre-hemorrhage values by 3 h after LR resuscitation, whereas no return was observed with NS resuscitation
  • Na+ was increased after NS resuscitation
  • No changes in Na+ or K+ were observed
  • K+ did not change initially after NS resuscitation but was elevated at 6 h afterwards
  • Ca++ was similarly decreased
  • Cl- was elevated for 6 h after NS resuscitation, with no changes shown after LR resuscitation
  • PT was similarly prolonged by resuscitation with LR (from 11.2 ± 0.2 sec at baseline to 12.1 ± 0.2 sec at 6 h) and NS
  • Plasma aPTT was also similarly prolonged by resuscitation with LR (from 17.1 ± 0.5 sec baseline to 20.1 ± 1.2 sec at 6 h) or NS
  • NS resuscitation resulted in better oxygen delivery and oxygen delivery-to-oxygen demand ratio as an index of oxygen debt
  • NS had better tissue perfusion and oxygen metabolism than LR
  • LR resuscitation returned BE and bicarbonate to pre-hemorrhage levels within 3 h, but no return of BE or bicarbonate was observed for 6 hr with NS resuscitation
  • current blood bank guidelines state that LR should not be mixed with blood to prevent the risk of clot formation from calcium included in LR
  • LR resuscitation should not be given with blood through the same iv-line and crystalloids should be avoided in patients with blood transfusion
  • PT and aPTT were prolonged for 6 h after hemorrhage and resuscitation, suggesting a hypocoagulable states
  • potential thrombotic risk from LR resuscitation is unlikely.
  • we suspected that the blood pressure after NS resuscitation would be lower than that of LR due to its vasodilator effects
  • NS required a larger resuscitation volume and was associated with poor acid base status and elevated serum potassium in this model
  • NS required 50% more volume and was associated with a higher cardiac output and lower peripheral resistance, as compared to LR resuscitation
  • These differences are possibly due to the vasodilator effects from NS
  • an elevation of K+ was observed at 6 h post NS resuscitation, while no change of K+ was observed after LR resuscitation
  • The mechanism for the increase of K+ from NS is not fully known
  • NS is associated with vasodilator effects and the risks of metabolic acidosis and hyperkalemia
  • Nathan Goodyear on 03 Jul 18
     
    LR vs NS crystalloid.
Nathan Goodyear

18FDG-PET/CT for predicting the outcome in ER+/HER2- breast cancer patients: comparison... - 0 views

breast-cancer-research.biomedcentral.com/...s13058-016-0793-2

PET scan cancer breast cancer

shared by Nathan Goodyear on 19 Mar 18 - No Cached
  • our study confirms that baseline PET parameters measured before neoadjuvant treatment have prognostic values in ER+/HER2- locally advanced breast cancer patients
  • It has been suggested that high baseline 18F-fluorodeoxyglucose (18FDG) uptake assessed by high standardized uptake value (SUV) could be associated with poor prognostic factors such as the high histological grade [2] as well as worse survival
  • several teams observed that the change in SUV values early during neoadjuvant treatment could be a good indicator of pathological response and potentially outcome
  • ...5 more annotations...
  • others studies suggested that baseline 18FDG uptake, which would avoid performing a second examination, could also be of interest to predict patient outcome, especially in ER+/HER2- BC
  • ER+/HER2- BC has less intense 18FDG uptake than some other phenotypes such as TN carcinoma
  • Patients with high baseline 18FDG tumor uptake are at higher risk of early recurrence
  • The 3-year EFS was 78.4% in patients with baseline tumor SUVmax > 8.3 (vs. 94.0% in those with SUVmax ≤ 8.3)
  • event-free survival (EFS)
  • Nathan Goodyear on 19 Mar 18
     
    Study finds benefit of PET scan in prognosis in ER+/HER2- breast cancers.
Nathan Goodyear

Cortisol Exerts Bi-Phasic Regulation of Inflammation in Humans - 0 views

www.ncbi.nlm.nih.gov/...PMC3186928

cortisol glucocorticoids inflammation hormones

shared by Nathan Goodyear on 12 Oct 16 - No Cached
  • GCs induce increased cellular expression of receptors for several pro-inflammatory cytokines including interleukin (IL)-1 (Spriggs et al. 1990), IL-2 (Wiegers et al. 1995), IL-4 (Paterson et al. 1994), IL-6 (Snyers et al. 1990), and IFN-g (Strickland et al. 1986), as well as GM-CSF
  • GCs have also been shown to stimulate effector cell functions including phagocytosis by monocytes (van der Goes et al. 2000), effector cell proliferative responses (Spriggs et al. 1990), macrophage activation (Sorrells and Sapolsky 2010), and a delay of neutrophil apoptosis
  • a concentration- and time-dependent range of GC effects that are both pro- and anti-inflammatory
  • ...13 more annotations...
  • basal (diurnal) concentrations of cortisol do not exert an anti-inflammatory effect on several pro-and anti-inflammatory mediators of the human immune inflammatory response
  • withdrawal of cortisol activity in vivo did not lead to increased inflammatory responsiveness of immune effector cells
  • maximal suppression of inflammation was achieved by a stress-associated, but still physiologic, cortisol concentration. There was no greater anti-inflammatory effect at higher cortisol concentrations (Yeager et al. 2005) although IL-10 concentrations continued to increase with increasing cortisol concentrations as we and others have shown
  • acutely, physiological cortisol concentrations are anti-inflammatory and, as proposed, act to limit over expression of an inflammatory response that could lead to tissue damage
  • Acutely, cortisol has anti-inflammatory effects following a systemic inflammatory stimulus (Figure 4). However, a cortisol concentration that acts acutely to suppress systemic inflammation also has a delayed effect of augmenting the inflammatory response to subsequent, delayed stimulu
  • 1) GCs can exert pro-inflammatory effects on key inflammatory processes and, 2) GC regulation of inflammation can vary from anti- to a pro-inflammatory in a time-dependent manner
  • The immediate in vivo effect of both stress-induced and pharmacological GC concentrations is to suppress concurrent inflammation and protect the organism from an excessive or prolonged inflammatory response
  • GCs alone, in the absence of an inflammatory stimulus, up-regulate monocyte mRNA and/or receptors for several molecules that participate in pro-inflammatory signaling, as noted above and in the studies presented here.
  • In humans, as shown here, if in vivo GC concentrations are elevated concurrent with an inflammatory stimulus, anti-inflammatory effects are observed
  • In sharp contrast, with a time delay of 12 or more hours between an increased GC concentration and the onset of an inflammatory stimulus, enhancing effects on inflammation are observed. These effects have been shown to persist in humans for up to 6 days
  • GC-induced enhancement of inflammatory responses is maximal at an intermediate concentration, in our studies at a concentration that approximates that observed in vivo following a major systemic inflammatory stimulus
  • In addition to enhanced responses to LPS, recently identified pro-inflammatory effects of GCs also show enhanced localization of effector cells at inflammatory sites
  • we hypothesize that pre-exposure to stress-associated cortisol concentrations “prime” effector cells of the monocyte/macrophage lineage for an augmented pro-inflammatory response by; a) inducing preparative changes in key regulators of LPS signal transduction, and b) enhancing localization of inflammatory effector cells at potential sites of injury
  • Nathan Goodyear on 12 Oct 16
     
    very interesting read on the effects of inflammation on cortisol and visa versa.
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