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Archive for June, 2009

In France Scientists Have Almost Invented the Medicine against Cancer

In France scientists have almost invented against cancer – a molecule blocking the reproduction of cancer cells.

The group of scientists under the guidance of CNRS synthesized in vitro a molecule which can block the reproduction of cancer cells and prevent the forming of vessels providing them with nutrients. The specialized “Plos One” magazine tells about this in the last issue, CNN reports.

According to the assessments of experts, the new preparation preliminary named HB-19, offers a wide challenge for curing oncological diseases. Besides, the derived medicine is deprived of the main side effect of the majority of modern anticancer preparations, which substantially worsen the treatment prognosis – toxicity, as it is said in the scientific report.

As it is noted by Ara Hovanessyan, one of the heads of the research, at the moment the effectiveness of the preparation is tested on mice and the culture of tissues taken from people suffering from prostate, mammary, intestine and skin tumour.

Another head of the project, the director of CNRS of study, Jose Cartie derived molecule has a destructive impact on the protein elementing the cancer molecule inhibiting its reproduction.

The scientist explains that one more mechanism of the molecule impact on a malignant formation is the oppression of angiogenesis, i.e. the formation of the vessels of cancer cells, which leads to oxygen and nutrients impoverishment and, as the result, to its destruction.

The researches are sure that the double effect of the experimental molecule makes it indispensable for treatment principle oncological diseases, and the offered methodology of synthesis allows to start the mass production of the preparation without peculiar problems.

The Hormone of Strain is Amenable to Control

Due to the effort of scientists hydrocortisone is known to us as the hormone, taking part in the regulation of carbohydrate, protein, and adipose metabolism in the organism, blood pressure and immune system work under a great strain. Although the state of constant and lingering stress can provoke the excessive output of this hormone that results in the fact that hydrocortisone is able to cause sleep disturbance, make us more subject to infections, provoke the increase of blood sugar and lead to uncontrolled gaining weight.

In Sean Talbot’s article in the recent issue of “Prevention” magazine the methods of controlling hydrocortisone level were described.

Moreover, these methods can fully realized in practice on minimum conditions. Some simple methods, such as a cup of black tea, laughter, good music, meditation and healthy sleep, help to prevent stress conditions and excessive output of hydrocortisone.

Sean Talbot based his findings on the data got during the research work. Thus, when the volunteers were given a difficult task, during an hour the level of hydrocortisone was 47% down among those who had drunk black tea and only 27% down among those who hadn’t. Among those who had watched a funny film the level of strain hormone lowered by about a half. Music, which was heard in the background in the stress condition, produced analogous calming and stimulating effect.

Besides, the researcher emphasized that the level of hydrocortisone and blood pressure lowered among those who had undergone the course of Thai meditation. The author advises to pay special attention to sleep regimen – the difference in the level of the hormone considered is 50 % among those who sleep 6 and 8 hours a day! So, if you haven’t managed to go to bed in time, you should have a nap in the afternoon in order not to expose your health to unnecessary risk.

Chewing gum with insulin is invented in America

Robert Doyle, a chemist from Syracuse University (New York), has invented chewing gum with insulin.
This invention was applied for to the WIPO.

The number of diabetes diseased in the world is such that the specialists speak of the epidemic. All these diseased get insulin by means of injections. There’s existed no other effective ways to deliver this kind of hormone of peptide nature to blood flow till this time. Though in 2006 insulin inhaler appeared in the American market, it was taken out from production because of its unprofitability.

Many diabetics would like to get insulin in tablets, though the research work of many years has shown that the digestive system easily destroys this hormone, and the unhurt insulin cells penetrate into blood with much ado.

Fortunately, Robert Doyle has found the way to deliver insulin, which will make the life of diabetes diseased much easier. The scientist noticed that the organism has a specific mechanism of protection and absorption of the molecules of nutrients, which are usually damaged in the digestive tract. E.g. vitamin B12 gets combined with salivary protein haptocorrine in the mouth, due to which it remains whole in the stomach. As soon as haptocorrine gets to the intestine, other chemicals start working; this helps vitamin B12 to penetrate into the blood flow.

Doyle offers to tie insulin molecules with vitamin B12, which will trail the hormone to the circulatory system. The experiment on rats has shown that the scheme works perfectly. The rats got the new medicine in liquid state, but for a man the best way to get the hormone will be to chew the insulin.

New evidence ties Gene to ALZHEIMER’S

Sufficient number of candidates potentially included in increasing a person’s risk for the most general category of Alzheimer’s illness which has an effect upon more than 5 million Americans over the age of 65, one gene which preserves grabbing Johns Hopkins researchers’ attitude makes a protein which is named neuroglobin.

Additionally to a increasing body of evidence about a crucial importance of this protein for the health of the aging brain, research workers at the McKusick-Nathans Institute of Genetic Medicine of the Johns Hopkins University School of Medicine considered the genetic neighborhood of neuroglobin as well as, for the first time in a human population, connected variety with a risk for Alzheimer’s.

A little genetic variation between different people may influence the amounts of certain proteins that each particular gene eventually produces. In this case, the team has explored those human individuals with genetic variations levelling to less neuroglobin making have a enhanced risk for Alzheimer’s.

“It is of importance to mention that a fascinating part of this research lies in quite high levels of neuroglobin which was found in the Alzheimer’s brain, it was entirely the contrary as compared to the prior expectations,” Dimitrios Avramopoulos mentioned, M.D., Ph.D., an associate professor in Hopkins’ working Institute of Genetic Medicine and the Department of Psychiatry.

Talking about the data published in Neurobiology of Aging, Avramopoulos has given an in – depth coverage to the matter, stating that his team counted levels of gene production in 56 different patterns of brain tissue of the individuals: 30 from approved cases of Alzheimer’s and 26 of those who did not have brain disease.

The research workers also found that neuroglobin levels reduced with enhancing age, which, Avramopoulos indicates it compatible with risk of Alzheimer’s enhancing with advancing age. The research team also established that levels of neuroglobin were sufficiently lower in women than in men, which is compatible with the factor that women are provided with a considerably higher risk of Alzheimer’s.

Almost twice as many patients in the population as general with Alzheimer’s are women which certainly can be imputable to the factor that women generally live longer thus having more of a possible chance to get Alzheimer’s. With the correction for that inequality, research group have established that a slightly higher risk exists in women than in men.

They were rather surprised to explore that neuroglobin levels have shown to be much higher in the brain tissue from Alzheimer’s patients as compared with those from control group.

Counter-intuitive from the first sight, it certainly makes sense, due to Avramopoulos, in particular in light of preliminary published researches which demonstrated that a protective purpose for neuroglobin and explored that mouse brains react to stress in this case, a lack of oxygen via neuroglobin production.

In the more general sense scientists have established that neuroglobin production also causes an increase in reaction to the outrage of the Alzheimer’s disease.

They generate a hypothesis that there a number of people in which protective responses are note enough to form an effective defence for the brain.

“The more we grow, the less neuroglobin this specific gene produces in our brains unless there appears a particular factor which will stimulate the genet to a more production,” as Avramopoulos reports.

“The factors may involve stressors like a deficiency of oxygen which serves as a result from stoke or emphysema. The matter is compatible to be Alzheimer’s disease.

“Further actions on this gene will be liable to provide intervention objectives for a sufficient number of very general conditions involving Alzheimer’s.”