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Nathan Goodyear

5-Methyltetrahydrofolate Rapidly Improves Endothelial Function and Decreases Superoxide... - 0 views

circ.ahajournals.org/...1193.long

BH4 5-methyltetrahydrofolate tetrahydrobiopterine MTHFR MTHFR A1298C eNOS NO nitric oxide atherosclerosis cardiovascular disease CVD

shared by Nathan Goodyear on 14 Sep 17 - No Cached
  • Nathan Goodyear on 14 Sep 17
     
    5-MTHF increases BH4 which increases eNOS activity and NO production providing improved endothelial function and thereby providing a mechanism to reduce atherosclerosis.  Interesting that the MTHFR A1298C decreases BH4 in contrast to the 677T.
Nathan Goodyear

American College of Cardiology Foundation | Journal of the American College of Cardiolo... - 0 views

content.onlinejacc.org/article.aspx

mitochondria oxidative stress heart failure heart

shared by Nathan Goodyear on 19 Mar 13 - No Cached
  • Although currently no drugs that specifically target mitochondrial biogenesis in HF are available, acceleration of this process through adenosine monophosphate–activated kinase (AMPK), endothelial nitric oxide synthase (eNOS), and other pathways may represent a promising therapeutic approach
  • Mitochondrial biogenesis can be enhanced therapeutically with the use of adenosine monophosphate kinase (AMPK) agonists, stimulants of nitric oxide/cyclic guanosine monophosphate (NO/cGMP) pathway (including phosphodiesteraes type 5 inhibitors), or resveratrol
  • metformin, a commonly used antidiabetic drug that activates AMPK signaling
  • ...10 more annotations...
  • Recent evidence suggests that the eNOS/NO/cGMP pathway is an important activator of mitochondrial biogenesis
  • BH4 (tetrahydrobiopterin) supplementation can prevent eNOS uncoupling and was found to reduce left ventricular hypertrophy
  • folic acid is known to replenish reduced BH4 and has been shown to protect the heart through increased eNOS activity
  • Both folate deficiency and inhibition of BH4 synthesis were associated with reduced mitochondrial number and function
  • Resveratrol, a polyphenol compound responsible for the cardioprotective properties of red wine, was recently identified as a potent stimulator of mitochondrial biogenesis
  • epidemiological studies reveal a reduced risk of cardiovascular disease in premenopausal, but not post-menopausal, women compared with men
  • post-menopausal women
    • Nathan Goodyear
      Nathan Goodyear on 19 Mar 13
       
      I would hypothesis that a change in the predominance of ER expression is one of ER beta to ER alpha: creating a more pro-inflammatory signal.
  • The majority of ROS in the heart appear to come from uncoupling of mitochondrial electron transport chain at the level of complexes I and III
  • Because the majority of ROS in HF comes from mitochondria, these organelles are the primary target of oxidative damage.
  • cardioprotective therapies such as angiotensin-converting enzyme inhibitors and ATII receptor blockers were shown to possess antioxidant properties, although it is not known whether they target mitochondrial ROS directly or indirectly
  • Nathan Goodyear on 19 Mar 13
     
    great review of mitochondrial biogenesis, oxidative stress and heart failure.  
Nathan Goodyear

Septic impairment of capillary blood flow requires NADPH oxidase but not NOS and is rap... - 0 views

www.ncbi.nlm.nih.gov/...PMC2572871

IV intravenous vitamin C BH4 tetrahydrobiopterine sepsis ascorbic acid

shared by Nathan Goodyear on 29 Feb 12 - No Cached
  • Nathan Goodyear on 29 Feb 12
     
    IV vitamin C and BH4 shown to resolve blood flow restriction in Sepsis rat model.  Again, revealing the benefits of not only vitamin C, but IV vitamin C.
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