Release of bird flu research delayed

February 22nd, 2012

Bioterror fears have caused experts to delay the release of important bird flu research.

Two controversial research papers have shown that the H5N1 bird flu virus could easily mutate into a form which could spread quickly and easily among the human population.

The H5N1 virus currently kills about 60% of people it infects, but it currently doesn’t transmit from human to human easily. It is feared that the virus may naturally mutate, causing a pandemic.

However, the US government have already asked for some of the sensitive parts of the research to be redacted over fears that it could be abused by terrorists.

The World Health Organisation (WHO) have indicated that more talks were needed before the research could be fully published.

However, the scientists believe that understanding how the virus can mutate is key to making progress on the development of a vaccine. They have already circulated details of their research at various conferences and some critics have suggested that the delays were an infringement of academic freedom.

Some scientists point out that the research is needed to develop any potential vaccine for bird flu and withholding parts of the research would restrict their efforts.

Experts are to assess the information that is already available in the public domain and how it relates to the research that is awaiting publication. In the meantime, much of the research into a vaccine for the bird flu virus has been on hold for four months and will await a decision in the next few months.

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Immune system adjusts according to time of day

February 21st, 2012

Research from the US has indicated that the immune system’s response times varies depending on the time of day.

The researchers indicated that the severity of an infection may be dependent on the time of day a person became infected. The ‘circadian rhythm’ affects many creatures, including bacteria, plants and animals, and the researchers hope to use this to their advantage in the development of new drugs and treatments.

The immune system uses proteins to help detect an infection. The scientists investigated a specific protein called TLR9 and found that way it is produced and the way it functions is partially controlled by the body clock.

By timing immunisations in mice with peak levels for TLR9, the scientists were able to show that the immune system’s response depends on what time a drug was administered.

Experts indicate that it has been known for some time that there was a link between circadian rhythms and the immune system, but this was one of the first investigations into why it existed.

The researchers suggest that the study could have ‘important implications for the prevention and treatment of disease.’ It may be possible to create drugs to target the the body clock to make it more active. Other drugs may also be improved by timing their administration with the body clock.

Dr Akhilesh Reddy from the University of Cambridge suggested that many companies were now taking into account the time of day a drug is administered into their trials and suggested that the impact of the findings may be seen within the next decade.

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Top modelling agencies sign up to ‘no sunbed’ policy

February 20th, 2012

A campaign launched by Cancer UK has seen some of the UK’s top modelling agencies sign up to a no sunbed policy.

Last year, sunbeds were banned for use by anyone under the age of 18 in England and Wales.

The new campaign, called ‘R UV UGLY,’ hopes to raise the awareness of the dangers of sunbed use even further.

The last 30 years have seen a fourfold rise in the number of melanoma cases and it is now the second most common cancer for people between the age of 15 and 34. The use of sunbeds has been linked to melanoma and it is estimated for people under the age of 35, there is a 75% increase in the risk of developing malignant melanoma if people use sunbeds.

Next, Storm, Elite, Premier Model Management, Oxygen, Union, Models 1, FM, Nevs, First and D1 are all amongst the agencies who have agreed to the ban. Many are now recommending hat their models turn to safer options such as spray tans in order to achieve a tanned look if they need it.

With the recent launch of the London Fashion Week, it is hoped that the ban will not only affect the models already on an agency books but also those who are aspiring to become models.

A spokesperson from Cancer Research UK said: “Using sunbeds can make your skin coarse, leathery and wrinkly. If you feel you must have a tan, it’s safer to fake it.

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Study links slow walking to increased dementia risk

February 17th, 2012

Scientists in the US have found evidence of a link between walking speed and the risk of developing dementia.

Researchers at the Boston Medical Centre claim that preliminary data from a recent study suggests that walking slowly may be an early indication of an increased likelihood of developing Alzheimer’s Disease.

The same study also makes a similar link between a weak hand grip and an increased risk of stroke in later life.

The study of 2,410 people, at an average age of 62, involved taking brain scans as well as recording walking speed and hand grip strength.

Follow-up examinations 11 years later showed that 34 people had dementia and 79 had suffered a stroke, with strong links to slower walking speeds and weaker hand grips respectively in the earlier data for both groups.

The study also found that people with slower walking speeds also tended to have lower total cerebral brain volume and performed less well in cognitive tests, while people with a stronger hand grip had more brain cells and did better in memory, language and decision-making tasks.

Experts say that while the study may offer hints at early warning signs for predicting dementia and stroke risk, research is at a very early stage and much more needs to be done to understand the mechanisms that might be involved.

Dr Erica Carmargo from the Boston Medical Centre said: “Further research is needed to understand why this is happening and whether preclinical disease could cause slow walking and decreased strength.”

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HIV repelled by starving it of the building blocks needed to spread

February 16th, 2012

Recent research has indicated that some immune system cells are able to repel attacks from the HIV virus by destroying their own raw materials before HIV can make use of them.

A virus needs to make use of other cells in order to replicate itself but some cells such as macrophages are more resistant to attack.

Recently a protein called SAMHD1 was linked to the resistance to virus attack. The protein breaks down DNA parts that cells use to make new copies of the DNA. Viruses can also hijack the DNA parts for use.

The researchers found that by removing the SAMHD1 protein, levels of the DNA parts increase, making those cells more susceptible for infection by the HIV virus. The researchers indicate that by increasing the SAMHD1 protein levels, the HIV virus was effectively starved of the DNA parts it needed to replicated itself.

Researcher Prof Baek Kim, said: “It makes sense that a mechanism like this is active in macrophages. Macrophages literally eat up dangerous organisms, and you don’t want those organisms to have available the cellular machinery needed to replicate and macrophages themselves don’t need it, because they don’t replicate.”

However, researchers warned that it was unclear how the protein could be used to treat HIV infection. Some cells need to use the broken down DNA in immune system response, and removing the supply would also hamper this operation.

HIV also attacks the body’s immune system, leaving it open to attack from other viruses. This can mean that an everyday infection has the potential to be fatal for sufferers of HIV.

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Health and Social Care bill defeated in the House of Lords

February 15th, 2012

The coalition government’s plans to reform the NHS have been defeated in the House of Lords.

The Health and Social Care bill has attracted controversy for some time and many doctors and nursing groups, including the British Medical Association and the Royal College of Nursing, oppose the plans.

The bill was one of the coalition government’s flagship proposals. It has already faced delays and some amendments were made before it was passed in the House of Commons. However, there has been growing opposition to the bill since it came to the House of Lords, prompting even more amendments.

The House of Lords have voted, with a majority of 4, to back a proposed amendment to the bill which would see mental health given a higher priority under the NHS. Further amendments are being discussed before the bill can progress further.

However, some point out that there have already been over 100 other concessions made to the bill and Labour are now calling for it to be scrapped altogether.

Many have indicated that the bill, which would see up to £65 million of NHS budget being controlled by GPs, is unlikely to be dropped. Some suggest that only the Prime Minister would be able to halt it.

However, despite criticism of the Health Secretary’s, handling of the bill, the Prime Minister has stood by him. He has previously indicated that the Health and Social Care Bill is needed to improve the NHS.

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Growing gap between suicide rates in Scotland, England and Wales

February 9th, 2012

Recent research from Universities in Edinburgh, Glasgow and Manchester has indicated a growing gap in male suicide between Scotland and the rest of England and Wales.

The researchers looked at the suicide rates between 1960 and 2008 and found that whilst the rate of suicide was lower in Scotland in 1960, by the end of the 60s it had overtaken England and Wales and the gap has continued to grow.

The research shows that the biggest rise in suicide rates was in men between the age of 25 and 54. There rate also reflected a big increase in the number of suicides by hanging. At the same time, the suicide rate in Scottish women was relatively unchanged since 1960.

One researcher indicated that a public campaign could be a useful way of tackling the number of suicides by hanging seen in Scottish men.

The researchers indicate that the study adds to their understanding of the long term differences in suicide rates across the UK and have indicated that they are working to find explanations.

Professor Stephen Platt, from the Centre for Population Health Sciences at Edinburgh University and a lead researcher in the study, said: “This study adds to our understanding about patterns of suicide in Great Britain by producing sound evidence on divergences in long-term trends in Scotland compared to England and Wales. In a future companion paper we will suggest explanations for the persisting higher rate of suicide in Scotland.”

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GMC issues assisted suicide guidance

February 8th, 2012

The General Medical Council (GMC) has launched its first guidance designed to help decide whether doctors should face disciplinary action if they have been alleged to have encouraged or assisted in a patient’s suicide.

The guidelines advise doctors to advise any patients who ask about assisted suicide that they cannot discuss it as it would be breaking the law.

The GMC guidance does point out the challenges faced by doctors when dealing with a patient who wants to end their life. It indicates that doctors should ensure any advice they give does not encourage or assist suicide, while at the same time ensuring that the patient doesn’t feel abandoned.

The guidance confirms that these difficulties should also be taken into account whether deciding to take disciplinary action. Other factors would include whether the alleged encouragement or assistance was persistent, active and instrumental, or minor and peripheral.

Mr Niall Dickson, from the GMC, was keen to stress that the main point of the guidance was to make it clear that ‘assisting suicide is illegal and doctors should have no part of it.’

Helping patients to travel to a place where assisted suicide was possible and providing any information on suicide methods and what they involve would call into question a doctors fitness to practice.

A previous court case forced the creation guidelines over who would face prosecution for assisting a suicide attempt. The guidelines are currently being challenged in court and the new GMC guidelines may also face a similar challenge in the future.

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Higher death rate in patients admitted to hospital on a weekend

February 6th, 2012

A major new study has backed up recent research that indicated patients were more likely to die if they were admitted to hospital at a weekend.

In November, a report indicated that patients admitted to hospital in need of emergency care were 10% more likely to die if they had been admitted over a weekend.

The new research carried out by University College London, the University of Birmingham and the University of East Anglia has backed up the previous research.

The new research looked at over 14 million hospital admissions. Between 2009 and 2010 over 180,000 patients died within 30 days of being admitted to hospital. There was a 16% increase in the risk of dying for those admitted to hospital during a Sunday than there was for those admitted mid-week.

One researcher suggested that seriously ill patients may be more likely to be admitted over a weekend, whereas those who were less ill may have the admission postponed until a mid-week date.

Other experts suggest that reduced staffing levels and poor access to diagnostic tests over a weekend may also account for the differences.

The researchers confirmed that they tried to account for the severity of illnesses and that they didn’t know whether this was a bigger factor in the increased death risk at weekends than how the services were run.

The NHS medical director Sir Bruce Keogh suggested that the results add weight to the argument that NHS services should be extended throughout the weekend.

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Asthma UK launch new online test

February 4th, 2012

Asthma UK have launched a new test on its website which they hope will help people with the condition to evaluate their risk of suffering a serious attack.

Asthma affects approximately one tenth of children and adults in the UK. Many people are hospitalised by an attack and there are over 1,000 deaths following a serious attack every year.

Efforts to further reduce this rate haven’t had a significant impact and the UK currently has a higher death rate than other similar countries.

Asthma UK believe that three quarters of hospital admissions can be prevented and hope that the online test will help people to manage their condition better.

The Triple A Test (Avoid Asthma Attacks) asks a series of questions relating to factors that are known to increase the risk of suffering a serious attack, leading to a hospital admission. An individual’s results are then categorised in a traffic light system, with red indicating a high risk of a serious attack. Each category has different advice on how to manage asthma symptoms and how to react to an attack.

Dr Samantha Walker, from Asthma UK, said: “The test is designed to make people sit up, take notice and make changes to the way they manage their asthma if they are shown to be at an increased risk of an asthma attack.”

A 12 month review of the UK’s asthma deaths is also set to begin. Data will be gathered from across the NHS and will be used to help develop better care.

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