Navigation Links
Theory of How HIV Attacks is Wrong: Study

A popular theory on how HIV attacks the body's immune system is wrong, a new study has found.

Scientists have long believed that HIV causes the slow depletion of healthy white blood cells -- the T cells which recognize infections so the body can fight them off -- by causing infected T cells to produce virus particles before dying.

This ongoing cycle of infection, HIV production, reinfection and cell destruction has been called the "runaway" hypothesis.

But if this were so, the T cells would be killed off far too quickly, the researchers found.

Using a simple mathematical model, researchers in the United States and Britain showed the "runaway" model would deplete the body's healthy T cells in a matter of months, instead of the years it actually takes.

The results show that a "slow process must be active" in the depletion of the T cells, the authors wrote in the current issue of the journal PLoS Medicine.

Identifying this process "will provide a key insight into the nature of HIV disease and indicate potential new approaches to therapy," they concluded.

A potential explanation for the slow process could be that the virus slowly adapts over the course of the infection, the authors said.

"The virus is constantly mutating and there may be selection - in a Darwinian sense -- over time for 'fitter' mutants of the virus in an infected person," said lead author Andrew Yates of Emory University in Atlanta, Georgia.

"There are several ways the virus could become fitter - for example by being able to infect new cells more readily, or by infected cells producing more new virus, or producing it more rapidly," he said in an e-mail interview.

"The virus adaptation hypothesis requires a lot more experimental investigation, however, and is only a tentative conclusion."


'"/>




Page: 1

Related medicine news :

1. New Information On Virus Goes Against The Age-Old Theory
2. Controversial Theory Says DNA Can Be Pushed To "Dark States"
3. Study Refutes Theory on HIVs Effect on White Blood Cells
4. Maths Theory Shows Genetic Pattern of Tumour Growth
5. Heart Attacks during Menstruation!
6. Supply of Radiopharmaceuticals Hampered by Attacks
7. Air Pollution and Heart Attacks
8. Kidney Patients Risk Heart Attacks
9. Kidney Patients Risk Heart Attacks
10. New Medication May Decrease The Frequency Of Angina Attacks
11. Obese Kids Also Prone To Heart Attacks
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/25/2017)... ... June 25, 2017 , ... June is Men’s Health Month and the ... common cancer among men in the U.S. and the third most common cause of cancer ... that one man in seven will be diagnosed with prostate cancer during his lifetime. ...
(Date:6/24/2017)... ... June 24, 2017 , ... The weather is heating ... outdoors. Home and business owners should be aware that the summer months provide more ... fact, mechanical locks and keys can be negatively affected from direct exposure to the ...
(Date:6/23/2017)... ... 23, 2017 , ... By scoring 100% for fiscal management and accountability, the ... online charity evaluator, Charity Navigator, validating ANRF's work as a top charity in America. ... Charity Navigator and earns ANRF a spot on their “ 10 Charities Worth Watching ...
(Date:6/23/2017)... ... June 23, 2017 , ... Dr. Ran Y. ... has recently begun offering three new minimally invasive procedures to patients who want ... reducing downtime, Dr. Rubinstein is excited to bring microneedling, microneedling facials, and platelet ...
(Date:6/23/2017)... ... ... The Aesthetic Channel has recently highlighted Dr. Ben Talei’s unique approach to ... technique that he calls the AuraLyft Facelift. The AuraLyft does more than ... expect to look refreshed, rejuvenated, and revitalized. , Dr. Talei’s unique approach stems ...
Breaking Medicine News(10 mins):
(Date:6/9/2017)... and INDIANAPOLIS , June 9, ... living with diabetes. In a further effort to help ... affected by this condition, the International Diabetes Federation (IDF) ... ) have come together for the second phase of ... Systems programme (BRIDGES 2), reaffirming their commitment to helping ...
(Date:6/7/2017)... GAITHERSBURG, Md. , June 7, 2017  Novavax, Inc., ... the second of two Phase 2 trials of its RSV ... women of child bearing age have been published in the ... this publication have been shared in prior scientific conferences). The ... trial in April 2014. Novavax is developing the RSV F ...
(Date:6/2/2017)... LAWRENCE, Mass. , June 2, 2017  NxStage ... advancing renal care, today announced new findings demonstrating positive ... NxStage ® System One™. The data will be ... 2017, in Madrid, Spain . ... Knowledge to Improve Home Dialysis Network in ...
Breaking Medicine Technology: