ProHealth health Vitamin and Natural Supplement Store and Health
Home  |  Log In  |  My Account  |  View Cart  View Your ProHealth Vitamin and Supplement Shopping Cart
800-366-6056  |  Contact Us  |  Help

|
|
|
|

Trending News

Gut Bacteria, Artificial Sweeteners and Glucose Intolerance

Reverse Mitochondrial Damage

Culprits of Autism Identified: Toxins, Gut Bacteria, Nutritional Deficiencies, and Vaccines Made wit...

Turmeric compound boosts regeneration of brain stem cells

Lower risk of mortality over thirteen year period in association with higher levels of vitamin D

Use of Broad-Spectrum Antibiotics Before Age 2 Associated with Obesity Risk

CoQ10: The Longevity Factor

Is Homocysteine Making You Sick?

VIDEO: Beautiful Clouds - Relaxation and Meditation

Magnesium: Widespread Deficiency with Deadly Consequences

 
Print Page
Email Article

Remodeling of ryanodine receptor complex causes 'leaky' channels: A molecular mechanism for decreased exercise capacity - Source: Proceedings of the National Academy of Sciences, Feb 12, 2008

  [ 15 votes ]   [ Discuss This Article ]
By Andrew M Bellinger, Andrew R. Marks, et al. • www.ProHealth.com • April 14, 2008


[Note: to read the full article free, click here.]

During exercise, defects in calcium (Ca2+) release have been proposed to impair muscle function. Here, we show that during exercise in mice and humans, the major Ca2+ release channel required for excitation–contraction coupling (ECC) in skeletal muscle, the ryanodine receptor (RyR1), is progressively PKA-hyperphosphorylated, S-nitrosylated, and depleted of the phosphodiesterase PDE4D3 and the RyR1 stabilizing subunit calstabin1 (FKBP12), resulting in "leaky" channels that cause decreased exercise tolerance in mice.

Mice with skeletal muscle-specific calstabin1 deletion or PDE4D deficiency exhibited significantly impaired exercize capacity. A small molecule (S107) that prevents depletion of calstabin1 from the RyR1 complex improved force generation and exercise capacity, reduced Ca2+-dependent neutral protease calpain activity and plasma creatine kinase levels.

Taken together, these data suggest a possible mechanism by which Ca2+ leak via calstabin1-depleted RyR1 channels leads to defective Ca2+ signaling, muscle damage, and impaired exercise capacity.

Source: Proceedings of the National Academy of Sciences, Feb 12, 2008, vol 105 #6 pp 2198-2202. PMID: 18268335, by Bellinger AM, Marks AR, Reiken S, Dura M, Murphy PW, Deng SX, Landry DW, Nieman D, Lehnart SE, Samaru M, La Campagne A. Columbia University College of Physicians and Surgeons, New York, NY, USA. [E-mail: arm42@columbia.edu]




Please Discuss This Article:   Post a Comment 



[ Be the first to comment on this article ]




 
Free Chronic Fatigue Syndrome and Fibromyalgia Newsletters
Subscribe to
Our FREE
Newsletter
Subscribe Now!
Receive up-to-date ME/CFS & Fibromyalgia treatment and research news
 Privacy Guaranteed  |  View Archives

Save on Vitamins and Supplements

Featured Products

Ultra ATP+, Double Strength Ultra ATP+, Double Strength
Get energized with malic acid & magnesium
Energy NADH™ 12.5mg Energy NADH™ 12.5mg
Improve Energy & Cognitive Function
Optimized Curcumin Longvida® by ProHealth Optimized Curcumin Longvida® by ProHealth
Supports Cognition, Memory & Overall Health
FibroSleep™ by ProHealth FibroSleep™ by ProHealth
The All-in-One Natural Sleep Aid
Ultra EPA  - Fish Oil Ultra EPA - Fish Oil
Ultra concentrated source of essential fish oils

Natural Remedies

The Big Blue Fish that Helps Chase the Blues Away The Big Blue Fish that Helps Chase the Blues Away
Irritable Bowel Syndrome: Unlocking the Secrets of Peppermint, Acacia and Fennel Irritable Bowel Syndrome: Unlocking the Secrets of Peppermint, Acacia and Fennel
Sunshine Vitamin Has D-lightful Health Benefits Sunshine Vitamin Has D-lightful Health Benefits
How I Found My Long-Lost Energy How I Found My Long-Lost Energy
Three-Step Strategy to Reverse Mitochondrial Aging Three-Step Strategy to Reverse Mitochondrial Aging

FIBROMYALGIA RESOURCES
What is Fibromyalgia?
Fibromyalgia 101
Fibromyalgia Symptoms
Fibromyalgia Treatments
| CFS RESOURCES
What is CFS?
ME/CFS 101
ME/CFS Symptoms
ME/CFS Treatments
| FORUMS
Fibromyalgia
ME/CFS
ADVANCED MEDICAL LABS
WHOLESALE  |  AFFILIATES
GUARANTEE
CONTACT US
PRIVACY
RSS
SITE MAP
ProHealth on Facebook  ProHealth on Twitter  ProHealth on Pinterest  ProHealth on Google Plus
Credit Card Processing