Showing posts with label Health. Show all posts
Showing posts with label Health. Show all posts

Noise- Feel It Now

The Outer Ear is a non-surgical concept system for the hearing impaired that detects sound-waves and converts them into physical vibration. A watch-like wrist-strap acts as the receiver and transmits a signal via Bluetooth to a device mounted on the arm which in turn converts the sound into low, medium or high vibrations depending on the frequency.

Designed by Jack Allwood, student at Swinburne University Australia, the Outer Ear can be adjusted for outdoors and indoors. The outdoor setting picks up sounds with higher decibels allowing the wearer to feel traffic and other loud noises, while the indoor adjustment picks up sounds more nearby, for instance timers, door bells or even babies and children.


how-it-works
Seen initially as a safety tool for deaf and hard of hearing persons, Allwood suggests that the Outer Ear also has the potential to improve human relationships and aid enjoyment of music by deaf people without the surgery required for devices like the Cochlear implant.

Some Facts About Coffee

coffee1. Caffeine Can Kill You
But you'd have to drink 80 to 100 cups in a hurry, health experts say. We advise not trying.


2. Coffee Can Be Good For You
A study shows that Americans get most of their antioxidants from their daily fix of java. One to two cups a day appear to be beneficial. Or, if you don't like coffee, try black tea, the second most consumed antioxidant source. Bananas, dry beans, and corn wrap up the top five.


3. Caffeine Might Boost Female Sex Drive
It worked on rats anyway. But researchers say in humans, coffee might enhance the sexual experience only among people who are not habitual users.


4. Caffeine Might Cut Pain
Moderate doses of caffeine — the equivalent of two cups of coffee— can cut post-gym muscle pain, a small study found. But the research was done on people who were not regular coffee drinkers.


Hb A1c a better Predictor For Diabetes than Fasting Glucose Test

DiabetesMeasurements of haemoglobin A1c (Hb A1C) more accurately identify persons at risk for clinical outcomes than the commonly used measurement of fasting glucose, according to a study published in the March 4 issue of the New England Journal of Medicine.

Hb A1C levels accurately predict future diabetes, and they better predict stroke, heart disease, and all-cause mortality as well.

As a diagnostic, "Hb A1C has significant advantages over fasting glucose," said lead author Elizabeth Selvin, PhD, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland. The A1C test has low variability from day to day, levels are not as affected by stress and illness, it has greater stability, and the patient is not required to fast before the test is performed.


Knee Injuries Could Be Treated By Radical Tissue Scaffold

tissue scaffoldDamage to knee cartilage is one of the more common types of sports injuries. Treatment often involves drilling a hole through the cartilage into the bone to stimulate the bone marrow to release stem cells, transplanting cartilage and the underlying bone from another part of the joint, or removing cartilage cells from the body, stimulating them to grow in the lab and re-implanting them. Now MIT engineers have built a new tissue scaffold that can stimulate bone and cartilage growth when transplanted into knees and other joints, potentially offering a more effective, less expensive – and painful – option to more conventional therapies.

The scaffold developed by MIT has two layers, one that mimics bone and another that mimics cartilage. When implanted into a joint, the scaffold can stimulate mesenchymal stem cells in the bone marrow to produce new bone and cartilage.

To develop the bone-mimicking layer, the team started with an existing method of producing a skin scaffold, made of collagen (from bovine tendon) and glycosaminoglycan, a long polysaccharide chain. To mimic the structure of bone, researchers developed a technique to mineralize the collagen scaffold by adding sources of calcium and phosphate.


Hb A1c a better Predictor For Diabetes than Fasting Glucose Test

First Advanced Prototype Revealed For Australian Bionic Eye

bionic eyeResearchers at Bionic Vision Australia (BVA) have produced a prototype version of a bionic eye implant  that could be ready to start restoring rudimentary vision to blind people as soon as 2013. The system consists of a pair of glasses with a camera built in, a processor that fits in your pocket, and an ocular implant that sits against the retina at the back of the eye and electronically stimulates the retinal neurons that send visual information to the brain. The resulting visual picture is blocky and low-res at this point, but the technology is bound to improve, and even in its current form it's going to be a major life-changer for those with no vision at all. And the future potential - even for sighted people - is fascinating.

Thanks to an Australian government injection of almost $40 million in 2009, Bionic Vision Australia has been able to revise the timeline of its innovative bionic eye program from "around 2020" to as close as three years away. This week, researchers demonstrated a prototype of the device they hope will begin restoring sight to blind people as early as 2013.

How it works

The retina can be very simplistically described as a matrix of nerve cells that fire when they're struck by certain types and levels of light. Those neurons send an electrical signal back to the brain's visual cortex, where information about color, light intensity, edges and lots of other interesting stuff is reassembled and the brain can begin processing it to try to work out what's going on - working out what objects you're looking at, what's moving, what's important.


First Advanced Prototype Revealed For Australian Bionic Eye

Enzyme Breaks Down Carbon Nanotubes

Nanotechnology is increasingly a part of our lives, and while it has enormous potential for the effective delivery of medication and fighting cancer, there are concerns about health effects such as toxicity and tissue damage. Now a team of scientists has shown that carbon nanotubes can be broken down by an enzyme found in white blood cells - contradicting the previous belief they are not broken down in the body or nature - and hope this new understanding may lead to a way to render carbon nanotubes harmless in medical applications.

Carbon nanotubes are cylindrical carbon molecules, rolled into a tube with a diameter of only a couple of nanometres (1 nanometre = 1 billionth of a meter) and a length that can range from tens of nanometres up to several micrometers.

They are lighter and stronger than steel and have exceptional heat-conductive and electrical properties, making them ideal for use in engineering and electronics. Their future potential is enormous anywhere weight and strength are an issue for example in the architectural, aerospace, and automotive industries.


World's Smallest & Lightest Telemedicine Microscope

telemedicine microscopeMaking use of novel lensless imaging technology, a UCLA engineer has invented the world’s smallest, lightest telemedicine microscope. The self-contained device could radically transform global health care – particularly in Third World countries – with its ability to image blood samples or other fluids. It can even be used to test water quality in the field following a disaster like a hurricane or earthquake.

Created by Aydogan Ozcan, an assistant professor of electrical engineering at the UCLA Henry Samueli School of Engineering and Applied Science and a researcher at UCLA's California NanoSystems Institute, the microscope builds on imaging technology known as LUCAS - Lensless Ultra-wide-field Cell Monitoring Array platform based on Shadow imaging - which was also developed by Ozcan.

Instead of using a lens to magnify objects, LUCAS generates holographic images of microparticles or cells by employing a light-emitting diode to illuminate the objects and a digital sensor array to capture their images.

In addition to being more compact and lightweight than conventional microscopes, it also does away with the need for trained technicians to analyze the images produced. Rather, the images are analyzed by computer so that results are available instantaneously.


World's Smallest & Lightest Telemedicine Microscope

New system being developed to assess risk of travel-related thrombosis

Each year, around 80,000 people in Germany become seriously ill from occlusions of veins caused by blood clots. Such thromboses can cause pulmonary embolism or even heart attacks. Although it wouldn’t have been of much concern over the past week thanks to the ash from Iceland’s Eyjafjallajokull volcano grounding flights across Europe, air travel is recognized as a risk factor for deep vein thrombosis with evidence showing the wearing of compression socks or tights while traveling reduces the incidence of thrombosis in people on long flights. However many people don’t wear such items as they don’t realize they may be at risk. A new fast and easy test of the risk of travel-related thrombosis will soon be possible – and all airline passengers will have to relinquish is one drop of blood.

Although such tiny analysis systems are still science fiction, researchers from eight European countries are developing the essential foundations that would enable a miniscale lab-on-a-chip that will assess the risk of travelers with the results appearing on a display in minutes. To facilitate the cost-efficient manufacturing of disposable diagnostic systems it is designed in plastic to enable inexpensive sheets or reel-to-reel production.


Nanoparticle vaccine cures type 1 diabetes i

insulinAccording to the American Diabetes Association around one in every 400 to 600 children and adolescents has type 1 diabetes – also known as IDDM, or juvenile diabetes. Currently there is no known way to prevent the disease which requires sufferers to administer insulin usually via injection or a pump. Using a nanotechnology-based "vaccine," researchers were able to successfully cure mice with type 1 diabetes and slow the onset of the disease.

Type 1 diabetes is caused when certain white blood cells (called T cells) mistakenly attack and destroy the insulin-producing beta cells in the pancreas. The subsequent lack of insulin leads to increased blood and urine glucose and is fatal unless treated with insulin.

"Essentially there is an internal tug-of-war between aggressive T-cells that want to cause the disease and weaker T cells that want to stop it from occurring," said Dr. Santamaria from the Julia McFarlane Diabetes Researchers Center at the University of Calgary, Alberta, who is a Juvenile Diabetes Research Foundation (JDRF) Scholar.

The researchers were looking to specifically stop the autoimmune response that causes type 1 diabetes without damaging the immune cells that provide protection against infections – what is called an "antigen-specific" immunotherapy. They developed a unique vaccine comprised of nanoparticles, which are thousands of times smaller than the size of a cell. These nanoparticles are coated with protein fragments – peptides – specific to type 1 diabetes that are bound to molecules (MHC molecules) that play a critical role in presenting peptides to T cells.


Atherosclerosis

atheromaAtherosclerosis is a inflammatory condition of the arterial wall which is characterised by localized lipid rich deposits of atheroma (cholesterol containing leisons) that mostly remain silent until they become large to impair blood flow or until ulceration or erosion of the lesion results in obstruction or embolisation of the affected vessel.
Atherosclerosis is a condition that begins early in life mainly among people who are at high risk (e.g. cigarette smokers, familial hyperlipidaemia or hypertension). However the symptoms usually become evident in sixth, seventh or eighth decade.

Atherosclerosis may present as coronary heart disease (angina, MI, death), neurological (stroke and TIA) or peripheral vascular disease (intermittent claudication and limb ischaemia). These conditions may often coexist.



Risk Factors for Atherosclerosis

The outcome of risk factors for AtherosclerosisRisk Factors is multiplicative rather than additive. People with more than one risk factor (smoking, hypertension and diabetes) are at greatest risk.

Age and sex. Increase in age increases the risk and male is at more risk than a female.
Family history. Often present in families.
Smoking. Smoking is probably the most important avoidable dose linked cause of atherosclerotic vascular disease.
Hypertension. Atherosclerosis increases with increase in blood pressure.
Hypercholesterolaemia (increased blood cholesterol level). Atherosclerotic vascular disease increases with cholesterol levels of blood.
Diabetes mellitus. This is a potent risk factor for all forms of atherosclerosis and is often associated with disease that is difficult to treat.


The outcome of risk factors for AtherosclerosisRisk Factors is multiplicative rather than additive. People with more than one risk factor (smoking, hypertension and diabetes) are at greatest risk.

Age and sex. Increase in age increases the risk and male is at more risk than a female.
Family history. Often present in families.
Smoking. Smoking is probably the most important avoidable dose linked cause of atherosclerotic vascular disease.
Hypertension. Atherosclerosis increases with increase in blood pressure.
Hypercholesterolaemia (increased blood cholesterol level). Atherosclerotic vascular disease increases with cholesterol levels of blood.
Diabetes mellitus. This is a potent risk factor for all forms of atherosclerosis and is often associated with disease that is difficult to treat.


Physical activity. Physical inactivity roughly doubles the risk of coronary heart disease and is a major risk factor for stroke. Regular exercise decreases cholesterol level, decreases bloop pressure. One should exercise regularly like brisk walking, swimming for half an hour, cycling or indulging in any physical games.
Obesity. Obesity is often associated with other risk factors such as hypertension, diabetes and physical inactivity.
Alcohol. Heavy drinking is associated with hypertension.
Other dietary factors. Diets deficient in fresh fruit, vegetables and polyunsaturated fatty acids are associated with an increased risk of vascular disease. Low levels of vitamin C, vitamin E and other antioxidants, low dietary folate, vitamin B12 and vitamin B6 can elevate homocysteine concentrations which can greatly enhance the progress of atherosclerosis.


© MedicTechno.com

Prevention Of Atherosclerosis

preventionPRIMARY PREVENTION
There are many strategies by which the progress or even the occurrence of atherosclerosis can be halted in apparently healthy but at risk individuals.
This includes modifying the risk factors by an individual. Some of them are:
  • Reduction in smoking or total stoppage of smoking
  • Regular exercise
  • Lose weight (maintain ideal body weight)
  • Eat a healthy diet low in cholesterol. Diet should include fresh fruits and vegetables
  • Less consumption of saturated fat.
  • Taking oily fishes



preventionPRIMARY PREVENTION
There are many strategies by which the progress or even the occurrence of atherosclerosis can be halted in apparently healthy but at risk individuals.
This includes modifying the risk factors by an individual. Some of them are:
  • Reduction in smoking or total stoppage of smoking
  • Regular exercise
  • Lose weight (maintain ideal body weight)
  • Eat a healthy diet low in cholesterol. Diet should include fresh fruits and vegetables
  • Less consumption of saturated fat.
  • Taking oily fishes



Asthma

asthmaAsthma is a clinical condition in which there occurs reversible airway obstruction due to airway hyper-sensitivity and characterized by cough, difficulty in breathing, chest tightness and presence of a whistle like sound while breathing. Airway hyper-sensitivity is triggered by various factors which lead to acute obstruction of the airway.

What causes Asthma?
The causes of asthma is poorly defined and mainly due to combination of environmental and genetic factors.
Some theories suggest that asthma in early childhood is caused by decreased infections in early life which prevent the formation of proper immunity and lead to development of airway hyper-sensitivity.
Warm, humid, centrally heated homes favor multiplication of house dust mites and this may contribute to childhood asthma. Having a pet at home may also lead to development of asthma.


Treatment Of Asthma

Education of the person with asthma
Encourage the person to take responsibility for control of their disease. This usually leads to improved clinical outcomes. Persons (or their carers) should be taught about the relationship between symptoms and inflammation, and the different types of medication in use.

Avoidance of aggravating factors
When avoiding the offending agent, asthma may be cured or substantially improved. The identification of sensitisation to a household pet suggests that asthma control may be improved by removing the animal from the home, although it may take several years before increased levels fall substantially.



Irritable Bowel Syndrome (IBS)

Irritable BowelFunctional gastrointestinal disorders are very much common and are explained by the absence of any organ pathology. Irritable bowel syndrome (IBS) is a functional bowel disorder which is associated with abdominal pain commonly with a change in bowel habit.
About 20% of the general population have the criteria of Irritable Bowel Syndrome (IBS) but only 10% of these consult their doctors because of symptoms. Young women are affected 2-3 times more often than men.

What causes Irritable Bowel Syndrome (IBS)?

Psychosocial factors: Anxiety, depression, neurosis, panic attacks are common. Psychological stress & overt psychiatric disease are known to alter visceral perception and gastrointestinal motility in both irritable bowel patients and healthy people.


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