The point about pain: New study sheds light on acupuncture
2010 05 31

From: Inquirer.net/MindAndBody


Acupuncture eases pain in the limbs because it releases a natural molecule called adenosine, neuroscientists in the United States reported on Sunday.

The mechanism was discovered through experiments in lab mice, which were given an injection of an inflammation-inducing chemical in their right paw.

The researchers inserted fine needles below the midline of the mice’s knee, at a well-known acupuncture location called the Zusanli point.

They rotated the needle gently every five minutes for 30 minutes, mimicking a standard acupuncture treatment.

During and just after this operation, levels of adenosine in the tissues surrounding the needle surged 24-fold. The mouse’s discomfort -- measurable by the rodents’ response time to touch and heat -- was reduced by two-thirds, they found.

The same test was carried out on mice that had been genetically engineered to lack adenosine. The acupuncture failed to have any effect, and the mice reacted in discomfort, as before.

The team then experimented with an adenosine booster. They gave mice a leukemia drug called deoxycoformycin, which makes it harder for tissues to remove adenosine.

As a result, levels of adenosine accumulated in the muscles, nearly tripling the duration of the acupuncture’s effectiveness.

"Acupuncture has been a mainstay of medical treatment in certain parts of the world for 4,000 years, but because it has not been understood completely, many people have remained skeptical," said Maiken Nedergaard of the University of Rochester Medical Center in New York, who headed the research.

Previous work has focused on acupuncture’s effectiveness on the central nervous system -- the trunk of nerves in the spinal cord and brain -- rather than the peripheral nervous system.

In the central nervous system, acupuncture creates signals that cause the brain to produce powerful anti-pain chemicals called endorphins.

The paper is published by the journal Nature Neuroscience.


Article from: inquirer.net/mindandbody



Related Articles
Acupuncture: Placebo Effect?
Acupuncture - Wikipedia
Acupuncture eases pain: Nature Neuroscience


Latest News from our Front Page

UK hospital accused of selling body parts for booze
2014 07 31
A leading cancer hospital is to be investigated following allegations that one of its staff members exchanged human body samples for whisky and cash. The calls to investigate Christies NHS foundation trust came after the accusation was made by an anonymous whistleblower, prompting British MP Rosie Cooper to contact the watchdog, the Human Tissue Authority (HTA), the Manchester Evening News reports. British ...
15 dead, over 220 injured as multiple gas explosions hit Taiwan city
2014 07 31
Several blasts have ripped through Kaohsiung, a city in south-western Taiwan, killing 15, injuring over 220 and overturning the cars in the street, the Fire Agency said. The cause is thought to be gas leaks in the sewage system. The number of those injured is expected to rise, the Fire Department said. Many were also taken to schools across the city ...
TYPOGRAPHICAL ERROR on front page of alleged U.S. criteria for terrorist list
2014 07 31
We highlighted the recent report from Glenn Greenwald’s site, The Intercept, about the United States administration’s ’Terror Watch List’, and how "a 166-page document issued last year by the National Counterterrorism Center, spells out the government’s secret rules for putting individuals on its main terrorist database". Read: BLACKLISTED: The Secret Government Rulebook For Labeling You a Terrorist A reader with a sharp ...
Why is the State so obsessed by, and careless with, deadly pathogens?
2014 07 31
Earlier this month, we ran a report on the CDC anthrax blunder. As if that weren’t bad enough, there have been additional exposures since we posted that report. This time, it involved the shipment of live, highly contagious, and deadly H5N1 avian influenza samples. As previously reported, as many as 841 scientists and staff members at a US Centers for Disease ...
‘Catastrophic’: Hedge fund billionaire Paul Singer warns of EMP
2014 07 31
Imminent: ‘Only a matter of time’ until entire electric grid destroyed by natural or man-made event… Billionaire hedge fund manager Paul Singer is warning investors – and more broadly, lawmakers and leaders – about the potential destructive power of an electromagnetic pulse, or EMP, which could be triggered by solar events or artificially, via blasts in the atmosphere. According to Singer, research ...
More News »