Skip to main content

Home/ Dr. Goodyear/ Group items tagged severe

Rss Feed Group items tagged

Nathan Goodyear

Melatonin inhibits both ER alpha activation and... [J Pineal Res. 2006] - PubMed - NCBI - 0 views

  •  
    Several interesting points about this article.  Cadmium is a non-carcinogen.  Cadmium acts through estrogen receptors.  Cd acts as an estrogen.  Second, melatonin inhibits ER alpha, which promotes inflammation and growth signaling.
Smile Reef

Choosing The Right Dentist for Your Child - 0 views

  •  
    If you are looking online for a children's dentist in Las Vegas, chances are you will find several sites for dentists in the area as well as general dental practitioners who can treat children. Now the question is-how do you choose?
Nathan Goodyear

ScienceDirect.com - Journal of the American College of Cardiology - High Serum Testoste... - 0 views

  •  
    This study found that high serum testosterone associated with a reduction of cardiovascular events in elderly men.  Studies have shown that low T is associated with increased cardiovascular mortality and in cardiovascular events, but this study takes it one step further: testosterone reduces those risks. 
Nathan Goodyear

Hormone therapy and Alzheimer disease dementia: Ne... [Neurology. 2012] - PubMed - NCBI - 0 views

  •  
    study finds that HRT given as women transition through menopause has benefiical effect in people with Alzheimer's.  However, when given years later, after menopause, no benefit is found.  In fact, rates increased.  Several flaws with this study.  First, they used synthetic hormones, particularily progestins.  Second, there seems to be no thought that the interpretation of the signal  has changed.  For example, we know that when men have low T, their estrogen receptor status changes from ER beta to ER alpha, which is more proinflammatory.  Third, use bioidentical hormones and compare these to synthetic hormones.
Nathan Goodyear

Hyponatremia and the Thyroid: Causality or Association? - 0 views

  •  
    hypothyroidism and hyponatremia is a rare finding; more commonly associated with severe hypothyroidism.  Co-exisitng medical complications need to be considered.
Nathan Goodyear

Gender and sex hormones in multiple sclerosis pathology and therapy - 0 views

  • It is now well recognized that the disease manifestation is reduced in pregnant women with relapsing-remitting MS
  • This occurs particularly during the third trimester when levels of estrogens (estradiol and estriol) and progesterone (see Table 2) are elevated up to about 20 times
  • This seems well correlated with a decrease in active white matter lesions detected by MRI
  • ...12 more annotations...
  • This clinical improvement is however followed by temporary rebound exacerbations at post-partum, when the hormone levels decline
  • a shift from Th1 to Th2 immune response, expansion of suppressive regulatory T lymphocytes and decrease in the number of circulating CD16+ natural killer (NK)-cells
  • Th1 lymphocytes secrete proinflammatory cytokines (e.g. IL-2, IFNgamma, lymphotoxin) while Th2 cells secrete anti-inflammatory cytokines (e.g. IL-4, IL-5, IL-10), which favor humoral-mediated responses
  • Th2 cytokines are associated with down-regulation of Th1 cytokines and this Th2 shift is believed to provide protection from allograft rejection during pregnancy as well as from Th1-mediated autoimmune disease
  • it is worth noting that the levels of other hormones with anti-inflammatory activity (1,25-dihydroxy-vitamin D3, norepinephrine, cortisol) also increase by 2 to 4 times during late pregnancy
  • 1,25-dihydroxy vitamin D3 induces regulatory T-cell function important for development of self-tolerance
  • breast-feeding does not alter the relapse rate in women with MS
  • Leptin is a pleiotropic hormone produced primarily by adipocytes but also by T lymphocytes and neurons
  • Several lines of evidence indicate that leptin contributes to EAE/MS pathogenesis, influencing its onset and clinical severity, by acting as a proinflammatory cytokine which promotes regulatory T cell (Treg) anergy and hyporesponsiveness, resulting in increased Th1 (TNFalpha, INFgamma) and reduced Th2 (IL-4) cytokine production
  • circulating leptin levels are increased in relapsing-remitting MS patients (men and women analyzed together) while the CD4+CD25+Treg population decreases
  • As the leptin plasma concentrations are proportional to the amount of fat tissue, obese/overweight individuals produce higher levels of leptin
  • Nielsen et al found that estradiol and progesterone exert neuroprotection against glutamate neurotoxicity, while MPA antagonizes the neuroprotective effect of estradiol and exacerbated neuron death induced by glutamate excitotoxicity
  •  
    very good review of the differences in MS and hormones between the sexes.
Nathan Goodyear

JAMA Network | JAMA | Trends in Obesity Among Adults in the United States, 2005 to 2014 - 0 views

  •  
    Obesity trends continue in the wrong direction.  According to most recent stats, 40% of American women are obese and 35% of men are obese.  Severe obesity sits at 10% for American women.
Nathan Goodyear

Nebulized Glutathione Induces Bronchoconstriction in Patients with Mild Asthma (ATS Jou... - 0 views

  •  
    Study finds that nebulizer glutathione in mild asthma induces bronchoconstriction.  This despite the knowledge that glutathione peroxidase activity is known to be depressed in those with asthma.  The severity of the asthma of the individuals included in this study might explain the finding.
Nathan Goodyear

Relationship between Metabolic Syndrome and Predictors for Clinical Benign Prostatic Hy... - 0 views

  •  
    Metabolic syndrome in men associated with progressive BPH and increased severity of LUTS.
Nathan Goodyear

Diurnal Cortisol Rhythm as a Predictor of Breast Cancer Survival - 0 views

  •  
    Flat and/or abnormal diurnal cortisol patterns found to be associated with earlier mortality in breast cancer.  The flatter cortisol pattern, the earlier the mortality.  Several points here: this highlights the impact of cortisol on the immune system.  Second, this reveals how much of the research has moved to saliva as the gold standard.  This study by the NCI, used salivary cortisol to evaluate the risk of breast cancer survivors.
Nathan Goodyear

Reproductive Hormone Levels in Men Exposed to Persistent Organohalogen Pollutants: A St... - 0 views

  •  
    Review finds endocrine disruption from Organocholrides, also called persistent organohalogen pollutants. Common POP, would be DDE, DDT... This is a review of several cohorts, but this follows the rest of the literature that these environmental toxicants are endocrine disruptors.
Nathan Goodyear

Is late-night salivary cortisol a better screening... [N Z Med J. 2012] - PubMed - NCBI - 0 views

  •  
    this study of 40 obese patients found saliva cortisol testing less specific than urinary; but more than Dexamethasone suppression test.  The problem with this is several fold: first, this is done via ELIZA and not Mass Spec and second, 24 hour urine collection is hard to achieve in real life.
Nathan Goodyear

Hypopituitarism after traumatic brain injury - 0 views

  • PTHP is observed in about 40% of patients with a history of TBI
  •  
    post-traumatic hypopituitarism is found in 40% of those with TBI.  The severity does correlate with the increased likelihood of developing PTHP.  Isolated deficiencies have been found in PTHP.
Nathan Goodyear

Emerald | Policing: An International Journal of Police Strategies & Management | Post-t... - 0 views

  •  
    elevated cortisol levels found in moderate/severe PTSD in police officers.  Again, saliva testing was used for cortisol evaluation.
Nathan Goodyear

JAMA Network | Archives of Neurology | Damage to Lipids, Proteins, DNA, and RNA in Mild... - 0 views

  •  
    oxidative damage found to be present in early Alzheimer's disease.  This early mild cognitive impairment is the time for treatment to delay disease progression.  As this study points out, most studies up to this point have been done on individuals with late Alzheimer's disease.  This show that oxidative damage plays a prominent role in disease development.  This study found oxidative damage through several markers: lipid peroxides,isoprostanes, 8-hydroxy-2-deoxyguanosine...
Nathan Goodyear

Estrogens in Men: Clinical Implications for Sexual Function and the Treatment of Testos... - 0 views

  •  
    Several flaws with this study. First, the majority of testing done in the meta-analysis was serum--unreliable.  Second, this study flies in the face of many other studies that have shown elevated estrogens contribute to low testosterone in men.  Third, this flies in the face of observation.  I see over and over again, by lowering a male's estrogen level, he in turn will start producing more Testosterone.  And finally, the environmental xenoestrogens have helped to contribute to a all time low of testosterone/infertility rate in men today.
Nathan Goodyear

JAMA Network | Archives of Internal Medicine | Combined Estrogen and Testosterone Use a... - 0 views

  •  
    this study revealed increased breast cancer risk in women on "estrogen" and "testosterone" therapy.  Now, several problems here: first, are these synthetic hormone or bioidentical.  Second, the dosages appear, in what is written, to be supra physiologic.  Third, giving supra physiologic estradiol and testosterone will obviously create imbalances and growth potential.  Fourth, how were the women evaluated prior to starting hormone therapy and then were they remonitered (unlikely), fifth, were hormone metabolites evaluated (too, also unlikely).  This study has serious flaws and very little can be extrapolated other than: don't take supra physiologic hormone levels without appropriate evaluation.  Enough said
Nathan Goodyear

The Association of Vitamin D Status With Pediatric Critical Illness - 0 views

  •  
    Vitamin D deficiency found more prevalent in those children with critical illnesses; and with greater severity of illness.
Nathan Goodyear

Lowered testosterone in male obesity: Mechanisms, morbidity and management Tang Fui MN,... - 0 views

  • The number of overweight people is expected to increase from 937 million in 2005 to 1.35 billion in 2030
  • Similarly the number of obese people is projected to increase from 396 million in 2005 to 573 million in 2030
  • By 2030, China alone is predicted to have more overweight men and women than the traditional market economies combined
  • ...37 more annotations...
  • diacylglycerol O-acyltransferase 2 (DGAT2), mechanistically implicated in this differential storage, [10] is regulated by dihydrotestosterone, [11] suggesting a potential role for androgens to influence the genetic predisposition to either the MHO or MONW phenotype.
  • bariatric surgery achieves 10%-30% long-term weight loss in controlled studies
  • The fact that obese men have lower testosterone compared to lean men has been recognized for more than 30 years
  • Reductions in testosterone levels correlate with the severity of obesity and men
  • epidemiological data suggest that the single most powerful predictor of low testosterone is obesity, and that obesity is a major contributor of the age-associated decline in testosterone levels.
  • healthy ageing by itself is uncommonly associated with marked reductions in testosterone levels
  • obesity blunts this LH rise, obesity leads to hypothalamic-pituitary suppression irrespective of age which cannot be compensated for by physiological mechanisms
  • Reductions in total testosterone levels are largely a consequence of reductions in sex hormone binding globulin (SHBG) due to obesity-associated hyperinsulinemia
  • although controversial, measurement of free testosterone levels may provide a more accurate assessment of androgen status than the (usually preferred) measurement of total testosterone in situations where SHBG levels are outside the reference range
  • SHBG increases with age
  • marked obesity however is associated with an unequivocal reduction of free testosterone levels, where LH and follicle stimulating hormone (FSH) levels are usually low or inappropriately normal, suggesting that the dominant suppression occurs at the hypothalamic-pituitary level
  • adipose tissue, especially when in the inflamed, insulin-resistant state, expresses aromatase which converts testosterone to estradiol (E 2 ). Adipose E 2 in turn may feedback negatively to decrease pituitary gonadotropin secretion
  • diabetic obesity is associated with decreases in circulatory E 2
  • In addition to E 2 , increased visceral fat also releases increased amounts of pro-inflammatory cytokines, insulin and leptin; all of which may inhibit the activity of the HPT axis at multiple levels
  • In the prospective Massachusetts Male Aging Study (MMAS), moving from a non-obese to an obese state resulted in a decline of testosterone levels
  • weight loss, whether by diet or surgery, increases testosterone levels proportional to the amount of weight lost
  • fat is androgen-responsive
  • low testosterone may augment the effects of a hypercaloric diet
  • In human male ex vivo adipose tissue, testosterone decreased adipocyte differentiation by 50%.
  • Testosterone enhances catecholamine-induced lipolysis in vitro and reduces lipoprotein lipase activity and triglyceride uptake in human abdominal adipose tissue in vivo
  • in men with prostate cancer receiving 12 months of androgen deprivation therapy, fat mass increased by 3.4 kg and abdominal VAT by 22%, with the majority of these changes established within 6 months
  • severe sex steroid deficiency can increase fat mass rapidly
  • bidirectional relationship between testosterone and obesity
  • increasing body fat suppresses the HPT axis by multiple mechanisms [30] via increased secretion of pro-inflammatory cytokines, insulin resistance and diabetes; [19],[44] while on the other hand low testosterone promotes further accumulation of total and visceral fat mass, thereby exacerbating the gonadotropin inhibition
  • androgens may play a more significant role in VAT than SAT
  • men undergoing androgen depletion for prostate cancer show more marked increases in visceral compared to subcutaneous fat following treatment
    • Nathan Goodyear
       
      Interesting: low T increases VAT, yet T therapy does not reduce VAT, yet T therapy reduces SAT.
  • irisin, derived from muscle, induces brown fat-like properties in rodent white fat
  • androgens can act via the PPARg-pathway [37] which is implicated in the differentiation of precursor fat cells to the energy-consuming phenotype
  • low testosterone may compound the effect of increasing fat mass by making it more difficult for obese men to lose weight via exercise
  • pro-inflammatory cytokines released by adipose tissue may contribute to loss of muscle mass and function, leading to inactivity and further weight gain in a vicious cycle
  • Sarcopenic obesity, a phenotype recapitulated in men receiving ADT for prostate cancer, [55] may not only be associated with functional limitations, but also aggravate the metabolic risks of obesity;
  • observational evidence associating higher endogenous testosterone with reduced loss of muscle mass and crude measures of muscle function in men losing weight
  • genuine reactivation of the HPT axis in obese men requires more substantial weight-loss
  • A number of intervention studies have confirmed that both diet- and surgically-induced weight losses are associated with increased testosterone, with the rise in testosterone generally proportional to the amount of weight lost
  • men, regardless of obesity level, can benefit from the effect of weight loss.
  • inconsistent effect of testosterone on VAT
  •  
    to be read
Nathan Goodyear

5 percent of US children, teens classified as 'severely obese' - 0 views

  •  
    Frightening statement from the American Heart Association.
« First ‹ Previous 41 - 60 of 286 Next › Last »
Showing 20 items per page