SIMEDICMX

Archive for April, 2009

Collective team of researchers has isolated the specific nerves that send to pleasure stimulations to the brain and now researchers claim that they have better understanding of body action to the pleasurable touch.

Study findings help to understand the importance of touch is sustaining human relations. To stimulate this sensation people have to caress with 4 to cm per second. For decade researchers are trying to find the nerves that convey the message of pain and pleasure to the brain.

Neuropathy occur in the peripheral nervous system that damage the extensions of nerve cells. In this way nerves unable to bring the exact message to the brain and sometime these provide the wrong stimulation to the brain and person feel pain without any cause.

But the researchers, in this study which was including 20 volunteers, deeply focused on the pleasure, an opposite sensation of the pain.

In the experiment, researchers tested the response of people when their forearm skin stroked at different speeds. They recognize the C-tactile nerve fiber responsible for the stimulation of pleasant touch. If the stroke is not within the optimum range the

Researchers also noticed that these nerves are only present on the hairy skin. Researchers believe that the Mother Nature have inhibited the nerve response when used as functional tool.

Researchers noticed that the speed of stroke was almost equal to the frequency at which mother provides comfort to a baby and couples show affection.

As human our basic instinct is reproduction but some mechanisms also exits that are related to the behavior that keep relationship going.

A hyper activity in the memory storage part of the brain indicates the risk of dementia according to the UK study.

Researchers already know that people which have the rough type of gene ApoE4 have a high risk of developing Alzheimer’s disease. Now the findings have associated delicate activities of hippocampus with the same mutation in people as young as 20.

The researchers of UK strongly believe that, over active hippocampus raise the risk of dementia in later age. This study could be the objective in developing techniques to point out people with increased risk of dementia.

Number of copies of ApoE4 rough gene increase the chances of developing dementia for instance with one copy person have four times more chances and with two copies chances get increased to ten percent. But according to the analysis of 36 volunteers with 20 to 35 years age, it is not necessary.

“The results of the study are of great interest but this doesn’t mean to accept that Alzheimer’s has started to develop in the young volunteers,” neuroscientists Dr Peter Nestor said.

There are multiple causes of Alzheimer’s and are complex too which include both environmental and genetic. Better comprehension can lead to develop the way the potent treatments to help people minimize their risk.

“This study can act as milestone for the further incoming studies to understand functioning of brain in younger people,” Professor Clive Ballard stated.

The Dutch researchers have found that a malfunctioning in the protein binding leads to the death of neurons in Alzheimer’s disease. This finding might help to find out the new treatments for the disease.

The knots of the overlapped proteins are believed to be the responsible of Alzheimer’s disease.

In the body, there is a process that inhibits the misfolds of the proteins but some hoe in Alzheimer’s patients this process doesn’t perform its functional appropriately which results in the death of the nerve cells.

Researchers found that unfolded proteins trigger the nerve damage by promoting the accumulation of hyperphosphorylated tau in brain mostly found in the Alzheimer’s patient. The study also explained that responses were strong in the high tau concentration areas of the brain in the Alzheimer’s patients. The study has published in “The American Journal of Pathology.”

The researchers concluded that “response of unfolded proteins commencement occur at initial stage of neurofibrillary degeneration and the persistent activation of unfolded protein response increase the retention of tau phosphorylation and neurodegeneration in the patients of Alzheimer’s. in future studies would be conducted to address the therapeutic possibilities of this channel  to save the nerve from damage in brain.”