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
Facebook Google Plus
Fibromyalgia  Chronic Fatigue Syndrome & M.E.  Lyme Disease  Natural Wellness  Supplement News  Forums  Our Story
Store     Brands   |   A-Z Index   |   Best Sellers   |   New Products   |   Deals & Specials   |   Under $10   |   SmartSavings Club

Trending News

Inflammation Disrupts Memory - What Can You Do to Protect Your Brain?

Artificial sweeteners linked to risk of weight gain, heart disease and other health issues

All About Ginkgo Biloba: Benefits of This Timeless Herbal Supplement

Yarrow Oil: Here's Why It Deserves a Place in Your First-Aid Kit

Vitamin D supplement use associated with lower risk of breast cancer

Carnitine deficiency suggested as contributor to autism

Hop Oil: A Safe Sleep Aide

Lutein — An Important Nutrient for Eye and Brain Health

White Camphor Oil: The Purest Camphor Oil

Taurine: Facts About This Crucial Amino Acid

 
Print Page
Email Article

Lupus advances: scientists propose mechanism to control red blood cell and platelet production

  [ 109 votes ]   [ Discuss This Article ]
By www.ImmuneSupport.com • www.ProHealth.com • July 31, 2000


Researchers at Jefferson Medical College have uncovered a potential switch that helps control the manufacture of red blood cells and blood-clotting platelets. By better understanding how the body keeps tight reins on this process, the scientists hope to someday therapeutically control blood cell production. For our tissues to have the oxygen they crave, we need to have enough circulating red blood cells. Athletes, for example, may artificially increase the number of blood cells using a hormone, erythropoietin, which helps immature red blood cells mature. But at the same time, too many cells can cause sluggish circulation and stroke. Controlling the amount of the hormone is one way of regulating red blood cell production. But there's another way, called "negative regulation," which involves blocking the growth and differentiation of red cell precursors. By activating the cell's own programmed suicide process, called apoptosis, researchers can halt the excessive production of red blood cells. Cesare Peschle, M.D., professor of microbiology and immunology at Thomas Jefferson University in Philadelphia, Ruggero De Maria, M.D., and their co-workers at Jefferson's Kimmel Cancer Center and the Istituto Superiore di Sanita in Rome, found evidence that by activating so-called "death receptors" on the surface of immature red blood cells, an important protein called GATA-1 can be turned off. GATA-1 is crucial to the development of immature blood cells. They report their work September 30 in the journal Nature. A News and Views article accompanies the research publication. The scientists found that turning on immature red blood cell death receptors triggers caspases, a family of 14 cysteine enzymes that degrade critical cellular proteins, such as GATA-1. This culminates in a reversible blockade of growth and differentiation of red cell precursors, which may lead to cell death. They detail part of the intricate cascade of cellular events leading to activation of these enzymes in the blockade of red blood cell development. Apoptosis is a fundamental biological process that is vital to cell differentiation and normal development. In human embryos, for example, apoptosis creates fingers from mitt-like hands. It occurs during normal aging and sometimes during irreversible cell injury from radiation and other poisons. Scientists believe apoptosis gone awry underlies neurodegenerative diseases such as Alzheimer's and Parkinson's diseases, autoimmune diseases such as lupus, and cancer. Apoptosis has received a great deal of attention in the popular press in recent years when scientists discovered that part of the reason cancer cells grow with abandon is because they lose the ability to die at a preset time. The Jefferson group's work indicates a "new frontier" in understanding apoptosis, Dr. Peschle says. He explains that "mild stimulation of death receptors and caspases induces a reversible inhibition of red cell development rather than apoptosis." This provides a key mechanism in fine tuning cell growth and differentiation. Such a novel mechanism may be of general significance, he says, and apply to diverse cell types, in addition to red blood cells and platelets. Failures in the mechanism may lead to either abnormal cell growth inhibition or excessive cell proliferation, such as occurs in some anemias and leukemias.




Post a Comment

Featured Products From the ProHealth Store
Optimized Curcumin Longvida® FibroSleep™ Energy NADH™ 12.5mg


Article Comments



Be the first to comment on this article!

Post a Comment


 
NAD+ Ignite with Niagen

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
FibroSleep™ FibroSleep™
The All-in-One Natural Sleep Aid
Mitochondria Ignite™ with NT Factor® Mitochondria Ignite™ with NT Factor®
Reduce Fatigue up to 45%
Vitamin D3 Extreme™ Vitamin D3 Extreme™
50,000 IU Vitamin D3 - Prescription Strength

Natural Remedies

Milk Thistle: Trusted Support for Health & Healing in a Toxic World Milk Thistle: Trusted Support for Health & Healing in a Toxic World
The Curcumin Revolution: 'Golden' Ticket to Better Health The Curcumin Revolution: 'Golden' Ticket to Better Health
Cocoa's Polyphenol Riches - All the Health Benefits without the Sugar, Calories or Guilt Cocoa's Polyphenol Riches - All the Health Benefits without the Sugar, Calories or Guilt
The Remarkable Benefits of Reishi Medicinal Mushrooms The Remarkable Benefits of Reishi Medicinal Mushrooms
Irritable Bowel Syndrome: Unlocking the Secrets of Peppermint, Acacia and Fennel Irritable Bowel Syndrome: Unlocking the Secrets of Peppermint, Acacia and Fennel

CONTACT US
ProHealth, Inc.
555 Maple Ave
Carpinteria, CA 93013
(800) 366-6056  |  Email

· Become a Wholesaler
· Vendor Inquiries
· Affiliate Program
SHOP WITH CONFIDENCE
Credit Card Processing
SUBSCRIBE TO OUR NEWSLETTERS
Get the latest news about Fibromyalgia, M.E/Chronic Fatigue Syndrome, Lyme Disease and Natural Wellness

CONNECT WITH US ProHealth on Facebook  ProHealth on Twitter  ProHealth on Pinterest  ProHealth on Google Plus

© 2017 ProHealth, Inc. All rights reserved. Pain Tracker App  |  Store  |  Customer Service  |  Guarantee  |  Privacy  |  Contact Us  |  Library  |  RSS  |  Site Map