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LOS ANGELES, April 6 (Xinhua) -- Freeze-dried strawberries may play a role in the prevention of esophageal cancer, a new study suggests."Strawberries may be an alternative or work together with other chemopreventive drugs for the prevention of esophageal cancer," said lead researcher Tong Chen, M.D., Ph.D., assistant professor, division of medical oncology, department of internal medicine at the Ohio State University.Study findings were presented at the ongoing 102nd annual meeting of the American Association for Cancer Research (AACR) in Orlando, Florida, according to the American Association for the Advancement of Science (AAAS) on Wednesday."We concluded from this study that six months of eating strawberries is safe and easy to consume. In addition, our preliminary data suggests that strawberries can decrease histological grade of precancerous lesions and reduce cancer- related molecular events," said Chen, who is also a member of the Molecular Carcinogenesis and Chemoprevention Program in the Ohio State University Comprehensive Cancer Center.The study involved a group of participants who consumed 60 grams of freeze-dried strawberries daily for six months and completed a dietary diary chronicling their strawberry consumption.The researchers obtained biopsy specimens before and after strawberry consumption. The results showed that 29 out of 36 participants experienced a decrease in histological grade of the precancerous lesions during the study.Using freeze-dried strawberries was important because by removing the water from the berries, they concentrated the preventive substances by nearly 10-fold, Chen said.Esophageal cancer is the third most common gastrointestinal cancer and the sixth most frequent cause of cancer death in the world, she noted.Chen and her team are studying esophageal squamous cell carcinoma (SCC) which makes up 95 percent of cases of esophageal cancer worldwide. China, where this study took place, has the highest incidence of esophageal SCC, according to the AAAS.In a previous study, Chen and colleagues found that freeze- dried strawberries significantly inhibited tumor development in the esophagus of rats. Based on these results, they embarked on a Phase Ib trial that included participants with esophageal precancerous lesions who were at high risk for esophageal cancer."Our study is important because it shows that strawberries may slow the progression of precancerous lesion in the esophagus," Chen said.But she said they need to test this in randomized placebo- controlled trials in the future.

N'DJAMENA, Feb. 16 (Xinhua) -- Chadian President Idriss Deby Itno said Wednesday while meeting visiting Chinese Foreign Minister Yang Jiechi that his country is willing to expand cooperation with China in infrastructure building, agriculture, health care and other fields.During the meeting with Yang, who arrived here Tuesday for an official visit, the president said the Chadian-Chinese relations are based on equality, mutual respect and noninterference in each other's interior affairs. He said China has successfully completed a number of aid projects in Chad, which greatly facilitated the social and economic development of the African country.Deby said Chad is willing to boost cooperation with China in such areas as infrastructure construction, agriculture and health care, and hopes to strengthen coordination with China on international affairs.For his part, Yang said Chad has undertaken the path of national reconciliation, political stability and social progress under the leadership of President Deby, and has made significant achievements in economic development and improvement of the welfare of the Chadian people.He said bilateral relations are developing rapidly since the re-establishment of diplomatic ties, with cooperation and exchanges at different levels significantly increased. The two sides have improved mutual political trust, supported each other on matters regarding each other's core interests, and seen continuous progress in trade and economic cooperation, said the foreign minister.Yang said China sees Chad as an important partner in Africa, and China is willing to further boost mutual political trust with Chad, expand trade and cooperation in infrastructure building, telecommunications as well as education sectors.The visiting Chinese FM also met with his Chadian counterpart Moussa Faki Mahamat Wednesday on further improving bilateral relations and cooperation.

CANBERRA, April 14 (Xinhua) -- The Australian federal government could struggle to get its carbon tax through parliament, as key independent Member of Parliament (MP) Tony Windsor on Thursday warned the plan may never become a reality.Windsor, who is one of the independents Prime Minister Julia Gillard will rely on to get her carbon tax pass the Parliament, said while climate action will benefit the bush, he will not "vote for something that does nothing"."There is no carbon tax, there may not be a carbon tax," he told ABC News on Thursday morning."The prime minister doesn't have the numbers, as I understand it at the moment."I have a vote, others do as well, so you can never guarantee something before it gets through a minority parliament."Windsor said people in his rural New South Wales electorate were concerned about the lack of detail around the proposed carbon tax.Gillard played down his comments, saying that Windsor, who sits on the multi-party climate change committee, had been "perfectly consistent" in his approach to the carbon price debate."He does believe climate change is real ... that pricing carbon is the best way, an important way, of tackling climate change," Gillard told ABC Radio on Thursday."(But) he's going to look at the (legislative) package and wait to the end and then judge (it)."Gillard added that the Labor government remains determined to introduce a carbon tax from mid-2012 followed by an emissions trading scheme.

WASHINGTON, April 4 (Xinhua) -- Scientists have identified a gene that appears to play a role in regulating how much alcohol people drink, in a study of over 47,000 people published Monday in the Proceedings of the National Academy of Sciences.The researchers say that finding a common genetic variation influencing levels of alcohol consumption may lead to a better understanding of mechanisms underlying alcohol drinking behavior in the general population.The gene, called "autism susceptibility candidate 2", or AUTS2, has previously been linked to autism and attention deficit hyperactivity disorder, but its function is not known.The new study, by an international consortium led by scientists at Imperial College London and King's College London, found that there are two versions of the AUTS2 gene, one three times more common than the other. People with the less common version drink on average five percent less alcohol than people with the more common version.The gene is most active in parts of the brain associated with neuropsychological reward mechanisms, suggesting that it might play a part in regulating the positive reinforcement that people feel when they drink alcohol.Alcohol consumption is known to be partly determined by genes but until now the only gene known to make a notable contribution was the gene encoding alcohol dehydrogenase, an enzyme that breaks down alcohol in the liver.Professor Paul Elliott, from the School of Public Health at Imperial College London, said: "Of course there are a lot of factors that affect how much alcohol a person drinks, but we know from twin studies that genes play an important role. The difference that this particular gene makes is only small, but by finding it we've opened up a new area of research into the biological mechanisms that control drinking."

HONG KONG, March 18 (Xinhua) -- After over a year's efforts, scientists from Shanghai and Hong Kong announced on Friday that they have completed the whole genomic sequencing work of Isaria cicada, a rare herb highly valued in traditional Chinese medicine, which will help facilitate its further development in medical and nutrition fields.It is the first time that the whole genomic sequence of Isaria cicada has been released, said the scientists from Shanghai Institute of Bio-Asia Life Science and the Hong Kong University of Science and Technology (HKUST), who participated in the research.The result was announced at the International Biomedical Scientists and Biotechnology Forum 2011 held in the day at the Hong Kong Science Park.According to the result, the genomic size of Isaria cicada, a medicine traditionally used to treat children's diseases, is about one eightieth of human genome, containing about 16,000 genes.The tests that had been done proved that Isaria cicada, with many high-quality genes not recognized or used by human beings yet, has been deeply involved in important life processes like metabolism, providing new ways for further development of Isaria cicad in bio-medical area, said a scientist from HKUST.The genome map will also help accelerate the artificial cultivation of Isaria cicada, enhancing its medicine and nutrition value and making it available in a larger market, according to the scientist.