EBR Systems and Cambridge Consultants Develop Leadless Pacemaker

EBR Systems, a start-up out of Sunnyvale California, and Cambridge Consultants, the technology design and development firm, have developed a leadless pacemaker system for patients with advanced heart failure. The Wireless Cardiac Stimulation System (WiCS) comprises two units, an implantable electrode and an external control unit. The electrode incorporates an ultrasonic, wireless receiver and delivers an electrical stimulus to the heart based on triggering signals from the external control unit.

In its current iteration the WiCS system is designed to work with conventional pacemakers/defibrillators pacing the right ventricle of patients requiring biventricular pacing. The WiCS external control unit senses the pacing stimulus delivered to the right ventricle and initiates a burst of stimulus from the electrode implanted in the left ventricle. According to the company, the wireless left ventricular pacing approach removes the need for complex surgery and the complications often associated with the coronary sinus leads used to pace the left ventricle — via redwolf.newsvine.com

Immunise or lose benefits, parents told

Parents who do not have their children fully immunised will be stripped of family tax benefits under a scheme announced by the Federal Government.

The Government says 11 per cent of five-year-olds are not immunised and has announced a shake-up of the system which will take effect from July 1 next year.

Under the changes, families who refuse vaccinations face losing up to $2,100 per child in benefits — via redwolf.newsvine.com

Spectrum clash builds around bionic implants

The battle over scarce radio spectrum that has embroiled the mobile broadband world even extends to a little-known type of wireless network that promises to reconnect the human nervous system with paralysed limbs.

At its monthly meeting next week, the US Federal Communications Commission will consider whether four sets of frequencies between 413MHz and 457MHz can be used by networks of sensors implanted in patients who suffer from various forms of paralysis. One intended purpose of these MMNS (medical micropower network systems) is to transmit movement commands from a sensor on a patient’s spinal cord, through a wearable MCU (master control unit), to implants that electrically stimulate nerves. The same wireless technology might be used in devices to restore sight or hearing — via redwolf.newsvine.com

Canadian’s lucky iron fish saves lives in Cambodia

The task was to help local scientists try to persuade village women to place chunks of iron in their cooking pots to get more iron in their diet and lower the risk of anemia. Great in theory, but the women weren’t having it.

It was an enticing challenge in a country where iron deficiency is so rampant, 60 per cent of women face premature labour, haemorrhaging during childbirth and poor brain development among their babies.

A disease of poverty, iron deficiency affects 3.5 billion people in the world.

The people they worked with — the poorest of the poor — can’t afford red meat or pricey iron pills, and the women won’t switch to iron cooking pots because they find them heavy and costly. Yet a small chunk of iron could release life-saving iron into the water and food. But what shape would the women be willing to place in their cooking pots?

We knew some random piece of ugly metal wouldn’t work… so we had to come up with an attractive idea, he said. It became a challenge in social marketing — via redwolf.newsvine.com

Bees help in the battle against tuberculosis

It’s no surprise bees have extraordinary noses, since they can detect pollen from a mile away.

Believe it or not, in some airports they are even being used to sniff out explosives and drugs, and as some Christchurch scientists are discovering soon honey bees might be able to add diagnosing tuberculosis to their CVs.

Hand picked honey bees have no idea they could revolutionise the way Tuberculosis is diagnosed. Believe it or not, humans with the lethal infectious disease have sweet floral smelling breath. People can’t smell it, but bees can — via redwolf.newsvine.com

Médecins sans Frontières book reveals aid agencies’ ugly compromises

A controversial new book produced by one of the world’s best-known aid agencies, Médecins sans Frontières, lifts the lid on the often deeply uncomfortable compromises aid organisations are forced to make while working in conflicts.

How humanitarian aid organisations work — and the sometimes unintended consequences of their actions — has been brutally cross-examined in recent years, not least by the critical Dutch author Linda Polman.

MSF’s collection of essays, Humanitarian Negotiations Revealed, has provided the most detailed and self-critical inside account of the deals aid agencies are forced to negotiate, often with groups and regimes which abuse human rights, to continue their work — via redwolf.newsvine.com

Science to help HIV positive men conceive

Melbourne researchers have made a significant breakthrough which will see men with HIV able to conceive children through artificial insemination, without infecting their partners and babies.

Doctors at the Royal Womens’ Hospital Victoria have developed a program where men with HIV have the virus eliminated from sperm samples before insemination.

The hospital’s Dr Michelle Giles says the program is about helping couples get pregnant safely — via redwolf.newsvine.com

Hearing loss affects one in five Americans, study finds

One in five Americans has hearing loss.

Yes, you heard that right.

A study published Monday in Archives of Internal Medicine found that 20% of Americans over the age of 12 experience hearing loss in at least one ear. That figure surprised study leader Dr Frank R Lin, an assistant professor of otolaryngology and epidemiology at Johns Hopkins School of Medicine and Bloomberg School of Public Health in Baltimore — via redwolf.newsvine.com

Mutant gene find raises hopes of those at risk of melanoma

Linda Seaman was 12 when doctors found her first melanoma. She was 29 when they found her second, which was hidden by hair on her scalp.

Melanomas run in Mrs Seaman’s family. Her mother and uncle have both had two, and she checks her children incessantly.

Today, researchers report the discovery of a mutant gene, carried by about 200,000 Australians, which increases the risk of developing melanoma by 2½ times.

The faulty gene is more common in those with a large number of moles and a family history of the disease — via redwolf.newsvine.com

Vaccination myths busted by science

A recent survey found more than two thirds of us research our medications on-line and half of us turn to Dr Google for diagnosis. But how do you know the information you are getting online is accurate? Basically, you don’t. In fact studies show if you search Google for vaccination, 60% of the results will not only be misleading but downright scary. In a time when vaccine-preventable diseases such as whooping cough and measles are in the news again, it’s critically important to know the facts about vaccination so that you can protect your kids and yourself.

So, let’s take a look at some of the common myths about vaccination and why they’re wrong — via Mamamia

Stem cell breakthrough for Parkinson’s disease

Researchers at the University of Melbourne have made a breakthrough in the use of stem cells to treat Parkinson’s disease.

Stem cells can be used to allow the body to produce dopamine, which prevents Parkinson’s.

Until now, treatment has been too risky because some of the stem cells can become carcinogenic.

But Dr Lachlan Thompson has told ABC’s AM program that scientists have now found a way to identify and separate the therapeutic cells from the dangerous ones — via redwolf.newsvine.com

Wallaby milk could give premature babies a bounce

New research from scientists in Melbourne has found the tamar wallaby produces special milk proteins that could prevent and aid gut problems in premature human babies.

One of the biggest problems facing premature babies is an underdeveloped gut which prevents them from properly absorbing important nutrients from breastmilk or formula.

Lead researcher Kevin Nicholas from Deakin University’s Institute for Technology, Research and Innovation says while in its early stages, it could have applications for premature babies in developing counties — via redwolf.newsvine.com

Why do parents buy chicken-pox lollies?

US authorities have warned parents that posting infected lollipops to other families who want their children to get chickenpox is against the law. But why are the parents doing it?

The news that some parents have been apparently posting saliva-soaked tissues and licked lollipops to each other in an attempt to spread chicken pox among their children has been greeted with widespread condemnation.

Doctors have cautioned that licking a supposedly infected lollipop is unlikely to pass on chickenpox — which is mostly an airborne virus — but could expose a child to other, more serious ailments.

And Jerry Martin, US attorney for the Middle District of Tennessee, warned that anyone attempting to send so-called pox packages through the mail would be breaking federal laws against shipping biohazards across state lines.

The Facebook page on which parents were discussing pox packages — Find a Pox Party In Your Area — has now ceased to exist

Autistic brains are heavier: study

The brains of boys with autism are heavier and contain many more neurons than those without the disorder, US researchers say.

The study, while small, suggests brain overgrowth may be occurring in the womb, according to the findings published in the Journal of the American Medical Association.

Researchers carried out post-mortem examinations on the brains of seven autistic boys, aged between two and 16, most of whom had died by drowning.

The 16-year-old’s cause of death was undetermined and one eight-year-old died of muscle cancer.

When they compared them to a control group of six boys without autism who died in accidents, they found the brains of autistic boys had 67 per cent more neurons in the prefrontal cortex and were nearly 18 per cent heavier than normal brain weight for age — via redwolf.newsvine.com

Doctor trials laser treatment to change eye colour

A US doctor is trying to pioneer a laser treatment that changes patients’ eye colour.

Dr Gregg Homer claims 20 seconds of laser light can remove pigment in brown eyes so they gradually turn blue.

He is now seeking up to $750,000 (£468,000) of investment to continue clinical trials.

However, other eye experts urge caution because destroying eye pigment can cause sight problems if too much light is allowed to enter the pupil.

Stroma Medical, the company set up to commercialise the process, estimates it will take at least 18 months to finish the safety tests — via redwolf.newsvine.com

Rare disease surfaces in Tasmania

A rare strain of a disease never seen in the southern hemisphere before has been discovered in Tasmania.

Two women contracted tularaemia earlier this year after being bitten and scratched by sick possums in western Tasmania.

Tularemia is an infectious bacterial disease which affects a range of species and is transferred through direct contact or biting ticks — via redwolf.newsvine.com

Artificial blood could soon be on the way

Researchers at Edinburgh University in Scotland have announced that they believe the type of artificial blood they are working on could be ready for testing in humans in as little as two or three years. Made from growing stem cells taken from adult human bone marrow, the blood they create would be of the rare type O-negative that some 98% of people in need could use — via redwolf.newsvine.com

Gene therapy used in a bid to save a man’s sight

Researchers in Oxford have treated a man with an advanced gene therapy technique to prevent him from losing his sight.

It is the first time that anyone has tried to correct a genetic defect in the light-sensing cells that line the back of the eye.

The president of the Academy of Medical Sciences said the widespread use of gene therapy of this treatment will be soon be possible — via redwolf.newsvine.com

US wants to give pharma more power over our medicines policy

Leaked documents from the Trans Pacific Partnership (TPP) Agreement negotiations currently underway in Peru show the US is seeking to use the agreement to increase the monopoly rights of pharmaceutical companies and undermine the effectiveness of pharmaceutical reimbursement programs like Australia’s Pharmaceutical Benefits Scheme.

The TPP is a proposed regional trade agreement involving Australia, Brunei, Chile, Malaysia, New Zealand, Peru, Singapore, the United States and Vietnam.

The texts, leaked over the weekend, include an annex on ‘transparency and procedural fairness for healthcare technologies’ and extra provisions for an intellectual property rights chapter that was leaked in February this year — via redwolf.newsvine.com

Are Gut Bacteria In Charge?

The bacteria in our gut may be controlling our lives more than we ever realised.

In the latest findings, published today in Nature, a link between gut bacteria and the development of multiple sclerosis in mice was shown. Studies have also examined gut bacteria in relation to obesity, depression and much more.

More human studies are emerging hinting at the role the bacteria in our guts may play well beyond helping us to digest our food — via redwolf.newsvine.com