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Nathan Goodyear

Allopregnanolone and mood disorders. [Prog Neurobiol. 2014] - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...23978486

allopregnanolone progesterone metabolite metabolites hormone hormones GABA PMDD women mood disorders

shared by Nathan Goodyear on 28 Jan 14 - No Cached
  • Nathan Goodyear on 28 Jan 14
     
    The progesterone metabolite allopregnanolone is shown to play a significant role in the PMDD symptoms.  The mechanism is via a paradoxical GABA-A effect.
Nathan Goodyear

Revisiting the roles of progesterone and allo... [Prog Neurobiol. 2014] - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...24172649

progesterone metabolites metabolite allopregnanolone GABA receptors PR brain

shared by Nathan Goodyear on 17 Mar 14 - No Cached
  • Nathan Goodyear on 17 Mar 14
     
    Only the abstract is available, but this study looks at the effects of progesterone through progesterone receptors and the progesterone metabolite allopregnanolone via the GABA A receptors in the brain.
Nathan Goodyear

Anticonvulsant Mechanisms of the Ketogenic Diet - Bough - 2007 - Epilepsia - Wiley Onli... - 0 views

onlinelibrary.wiley.com/...full

ketogenic ketogenic diet seizures nutrition diet glucose mitochondria insulin ROS oxidative stress

shared by Nathan Goodyear on 16 Nov 16 - No Cached
  • The ketogenic diet (KD) is a high-fat, low-protein, low-carbohydrate diet that has been employed as a treatment for medically refractory epilepsy for 86 years
  • The hallmark feature of KD treatment is the production of ketone bodies by the liver
  • almost any diet that produces ketonemia and/or diminished blood glucose levels can induce an anticonvulsant effect.
  • Nathan Goodyear on 16 Nov 16
     
    ketogenic diet reduces seizures.  Proposed mechanisms: reduced insulin, reduced ROS, reduces oxidative stress, reduced inflammation, increased GABA/Gluatamate ratio.  In the end, it reduces inflammation and increases mitochondrial efficiency.
Nathan Goodyear

Sex-specific effects of long-term exposure to bi... [Chemosphere. 2014] - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...25112706

bisphenol A BPA xenoestrogens ER beta ER-beta hormone hormones anxiety depression

shared by Nathan Goodyear on 13 Aug 14 - No Cached
  • Nathan Goodyear on 13 Aug 14
     
    really interesting abstract.  Bisphenol A (BPA)  is a xenoestrogen.  This animal study finds that BPA down regulated ER-beta in the brains of male rats.  It also blocked the production of GABA(A)alpha 2 receptor.  These long term effects were evident in anxiety and depression in adult mice. Pregnancy exposure would set up an ER-alpha dominance in the male brain increasing risk of continuous ER alpha stim.
Nathan Goodyear

Evaluation of gabapentin in management of hot flushes in postmenopausal women - 0 views

min.sagepub.com/...36.short

gabapentin GABA neurontin hot flashes post menopause women vasomotor symptoms menopause

shared by Nathan Goodyear on 25 Mar 14 - No Cached
  • Nathan Goodyear on 25 Mar 14
     
    Study finds non-hormonal therapy to manage hot flashes in postmenopausal women--drug them.  The authors of this study, looked to gabapentin, also known as neurontin to treat hot flashes.  Instead of looking at the causes: hormone imbalance, stress... these authors looked to a sedating drug.  The dosing of neurontin was 900 mg.   Most can't stand at this dose.  This study points to the lunacy in the research today.  Very soon, there will be the walking dead among us.  They will be the walking doped instead of dead.
Nathan Goodyear

The implication of neuroactive steroids in Tourette syndrome pathogenesis: a ... - 0 views

www.ncbi.nlm.nih.gov/...PMC3849218

tourette's syndrome hormones 5-alpha reductase

shared by Nathan Goodyear on 08 Dec 15 - No Cached
  • The typical onset of TS occurs at 6–7 years of age and is characterized by the appearance of simple, recurrent motor tics, followed by the manifestation of phonic tics after several months [12]. In most children, TS symptoms undergo a progressive exacerbation, which reaches its zenith at the beginning of puberty (11–12 years of age), and is then followed by a gradual remission in the majority of patients
  • 30–40% of TS-affected children retain their symptoms in adulthood
  • Multiple neurotransmitters have been implicated in TS, including dopamine (DA), serotonin, norepinephrine, acetylcholine, glutamate and γ-amino-butyric acid (GABA)
  • ...11 more annotations...
  • female gender may predict greater tic severity in adulthood
  • male gender is a major risk factor for TS (with a male:female prevalence ratio estimated at ~4:1)
  • the typical age of onset coincides with adrenarche (6–7 years old); symptoms increase in severity until the beginning of puberty (12 years old) and then undergo a spontaneous amelioration, which becomes apparent with the end of puberty (at 18–19 years of age)
  • TS is diagnosed later in females than males
  • ample evidence supports the involvement of DAergic dysfunctions in TS
  • a number of clinical observations showed that tics in TS patients could be exacerbated by anabolic androgens
  • steroidogenic enzymes and androgen receptors may serve as putative therapeutic targets for this disorder
  • Unlike males, tic severity is typically increased after puberty in females
  • 26% of females were found to experience exacerbation of tics in the estrogenic phase of the menstrual cycle, and this phenomenon was found to be correlated with increased tic severity at menarche
  • biochemical hallmark of adrenarche is the acquisition of 17,20 lyase activity by cytochrome P450 C17 (CYP17A1)
  • increased synthesis of dehydroepiandrosterone (DHEA) and androstenedione, which leads to the growth of axillary and pubic hair as well as enhancement in the oiliness of the skin
  • Nathan Goodyear on 08 Dec 15
     
    interesting read on hormones and tourette's.. Proposed that 5 alpha reductase activity is involved in worsening of tics.  This makes sense as Testosterone in men with low T is known to increase dopamine and dopaminergic dysfunction is known to play a role in tourette's;  the clinical presentation of girls vs boys is very different.  The authors of this article propose that 5 alpha reductase activity controls a back door method where by progesterone is converted to androgens.
Nathan Goodyear

http://jeffreydachmd.com/wp-content/uploads/2016/03/Ivermectin-pharmacology-and-therape... - 0 views

jeffreydachmd.com/...ations-Sunita-Chhaiya-2012.pdf

Ivermectin cancer

shared by Nathan Goodyear on 19 Mar 18 - No Cached
  • Nathan Goodyear on 19 Mar 18
     
    good review of the mechansims of action of Ivermectin.
Nathan Goodyear

Sex hormones affect neurotransmitters and shape the adult female brain during hormonal ... - 0 views

www.ncbi.nlm.nih.gov/...PMC4335177

hormones neurotransmitters serotonin GABA dopamine estradiol progesterone glutamate

shared by Nathan Goodyear on 11 Jul 17 - No Cached
  • estrogen administration has been found to increase tryptophan hydroxylase
  • 5-HT2A mRNA levels in brain areas relevant for the control of mood, mental state and cognition (Sumner and Fink, 1998) and 5-HTT mRNA when administered for a longer period
  • n the other hand, estrogen treatment has also been observed to decrease mRNA related to serotonergic neurotransmission
  • ...4 more annotations...
  • Furthermore, acute estrogen administration decreases 5-HTT mRNA levels (Pecins-Thompson et al., 1998) and 5-HT1A mRNA levels and binding
  • assigning the effects of estrogen on serotonin to a homogenous functional class of stimulation or inhibition seems not to be feasible
  • Progesterone has been suggested to increase serotonergic neurotransmission via the regulation of the expression of serotonin-related genes and proteins
  • menopausal women gain less benefit from antidepressant treatments compared to women during their reproductive years
  • Nathan Goodyear on 11 Jul 17
     
    good review of the relationship of the sex hormones and neurotransmitters.
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