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Nathan Goodyear

Hypothalamo-Pituitary-Adrenal Axis Dysfunction in Chronic Fatigue Syndrome, and the Eff... - 0 views

  • We conclude that the improvement in fatigue seen in some patients with chronic fatigue syndrome during hydrocortisone treatment is accompanied by a reversal of the blunted cortisol responses to human CRH
  • These data further suggest that the hypocortisolism found in chronic fatigue syndrome may be secondary to reduced adrenal gland output.
  • 5-mg replacement dose of hydrocortisone, and the remainder 10 mg
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    low dose hydrocortisone therapy (defined as 5-10 mg), in this study, was used to treat CFS.  This study found an improvement in symptoms in these patients.  Additionally, low cortisol was found in these patients with CFS.  Their conclusion, was that low adrenal function is a component of CFS and low dose hydrocortisone therapy is an effective treatment.   Now, is the low cortisol as the result of increased metabolism as well?
Nathan Goodyear

Hypothalamo-Pituitary-Adrenal Axis Dysfunction in Chronic Fatigue Syndrome, and the Eff... - 0 views

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    This study reveals CFS to be low adrenal cortisol output problem. In this study, low dose cortisol (hydrocortisone) therapy improved symptoms of fatigue and improved the CRH adrenal stimulation of adrenal cortisol production.
Nathan Goodyear

Low-dose hydrocortisone in chronic fatigue syndrome: a randomised crossover trial : The... - 0 views

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    low dose hydrocortisone therapy, 5-10 mg, shown to be effective short-term therapy in patients with chronic fatigue syndrome.  Additionally, and very important, this study found no adrenal function suppression at these doses.
Nathan Goodyear

Low-Dose Hydrocortisone for Treatment of Chronic Fatigue Syndrome, September 23/30, 199... - 0 views

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    this study revealed symptom improvement with hydrocortisone treatment in those with CFS. Pre/post treatment was with serum cortisol and not salivary cortisol.  This is a weakness of the study.  The starting dosage of 25-30 mg hydrocortisone is high and with inadequate evaluation, this high dosage could have resulted in high dosage and adrenal suppression.  
Nathan Goodyear

Overtraining, Exercise, and Adrenal Insufficiency - 0 views

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    Great review on over training syndrome and hypoadrenia.
Nathan Goodyear

Diurnal cortisol rhythm and fatigue in breast canc... [Psychoneuroendocrinology. 2005] ... - 0 views

  • Results suggest a subtle dysregulation in hypothalamic-pituitary-adrenal axis functioning in breast cancer survivors with persistent fatigu
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    salivary cortisol predictive of fatigue in breast cancer survivors
Nathan Goodyear

Diurnal variation of adrenocortical activ... [Neuropsychobiology. 1998] - PubMed - NCBI - 0 views

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    adrenocortical dysfunction found to play a role in CFS
Nathan Goodyear

Hypocortisolism: An Evidence-based Review - 1 views

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    Fantastic review of the literature as it relates to hypocortisolism. This paper reviews the various proposed pathophysiologic mechanisms for the development of hypocortisolism. It also discusses the proper diagnostic test of choice: salivary cortisol testing.
Nathan Goodyear

Overtraining Syndrome - 0 views

  • Alterations in the HPA and hypothalamic-pituitary-gonadal axes with a resultant decrease in testosterone:cortisol ratios have been implicated in OTS. Proinflammatory cytokines are potent activators of the HPA system, which cause release of corticotropin-releasing hormone, adrenocorticotropic hormone, and cortisol. These cytokines suppress testosterone through central inhibition
  • Some have suggested that a decreased testosterone:cortisol ratio can be diagnostic of NFO and/or OTS. However, the ratio represents the physiologic strain of training rather than the athlete’s maladaption to that stress
  • Cortisol (catabolic and anti-inflammatory) is converted to inactive cortisone by 11β-HSD2
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  • A prospective study found a clinically significant increase in overnight urinary cortisol:cortisone ratio during a high training load period in triathletes, who subsequently underperformed and reported fatigue
  • It is proposed that cytokines may inhibit 11β-HSD2 activity and result in relative increases in cortisol and, hence, catabolism
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    Overtraining syndrome described.
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