阳痿早泄的原因天津市龙济医院(天津龙济医院秘尿专科医院) (今日更新中)

CANBERRA, Sept. 7 (Xinhua) -- A team of Australian and U.S. scientists on Wednesday said they discovered a genetic defect, which can lead to Leigh syndrome, a rare disorder which affects the central nervous syndrome.The scientists tested more than 1000 genes by encoding proteins active in two individuals who suffer from the illness. They used a new technique known as next-generation DNA sequencing to examine the genes.The gene they discovered encodes an enzyme which is found in the mitochondria which are subsets of cells. Without this enzyme the mitochondria do not translate proteins efficiently, and this then causes Leigh syndrome.According to David Thorburn, from the Murdoch Children's Research Institute in Melbourne, the discovery shows the enormous potential of the new technology."These findings demonstrate the ability of sequencing technologies to improve diagnosis," Professor Thorburn said in a statement released on Wednesday."Although it isn't clear in the case of Leigh syndrome whether the precise molecular diagnosis will necessarily lead to therapies, the current findings represent a meaningful service."He added that diagnosis of the disease along with its specific genetic cause can also be informative about the risk a couple has of having another affected child. The diagnostic information can help in decisions about whether and how to pursue alternative means of having children, for instance through the use of donor sperm or eggs.The research team consisted of scientists from Australia's Murdoch Institute as well as the Broad Institute in the U.S.In Leigh syndrome, infants are born apparently healthy only to develop movement and breathing disorders that worsen over time, often leading to death by the age of three. The problem is that the mitochondria responsible for powering their cells cannot keep up with the demand for energy in their developing brains.

SAN FRANCISCO, June 23 (Xinhua) -- Facebook announced Thursday that Netflix CEO and Chairman Reed Hastings has joined the social network company's board of directors.Hastings, who successfully managed Netflix through an IPO in 2002, is expected to provide useful guidance for Facebook which plans to go public.As the most popular subscription-based movie and television show rental service in the United States, Netflix could also help Facebook figure out how to enter the business of music streaming and movies, which, CEO Mark Zuckerberg said at the eG8 Forum held in Paris last month, would be Facebook's next focus.The Facebook board seat could also help Netflix to catch up with the social evolution of the Internet with its 23.6 million subscribers in the U.S. and Canada."Reed is an entrepreneur and technologist who has led Netflix to transform the way people watch movies and TV," said Zuckerberg in a statement. "He has built a culture of continuous rapid innovation, something we share and work hard to build every day.""Facebook is propelling a fundamental change in how people connect with each other and share all kinds of content," said Hastings. "I'm looking forward to working with Mark and the rest of the board to help Facebook take advantage of all the opportunities ahead."

MOSCOW, Aug. 3 (Xinhua) -- Two Russian cosmonauts manually launched a mini satellite from the International Space Station ( ISS) during a six-hour spacewalk Wednesday, said the Mission Control center near Moscow.Sergei Volkov and Alexander Samokutyayev, who started the spacewalk with a 20-minute delay, found the 30-kg Kedr has lost one of its two antennas during its delivery to the ISS in January. After consulting with the Mission Control, they have decided to launch the device anyway, Interfax news agency reported.The Kedr satellite, which was made by Russian students, was created to transmit from the orbit greetings in 15 languages about the 50th anniversary of Yuri Gagarin's first space flight. It could also photograph the Earth and re-transmit information from the ISS equipment.During the spacewalk, the cosmonauts were expected to install new stream video equipment on the station's outer surface, and to take pictures holding photos of the founders of Russian space explorations, including Konstantin Tsiolkovski, Sergei Korolyov and Yuri Gagarin.

BEIJING, August 4 (Xinhuanet) -- Medtronic Inc. is giving Yale University a 2.5 million U.S. dollar grant to review the safety and effectiveness of its controversial spine treatment called Infuse Bone Graft, according to The Wall Street Journals Thursday.Under terms of the pact, the company will release to Yale and eventually the public what participants described as an unprecedented amount of clinical trial and other data. The university will select two research teams from other organizations to perform separate analyses of the data.The announcement comes in the wake of a paper in June in the Spine Journal. The paper revealed that several clinical studies of Infuse, conducted by surgeons with strong economic ties to Medtronic, failed to report serious complications that arose in the trials. The critical paper also found that many of the studies were designed in ways in favor of Infuse over a treatment given to a control group.Medtronic disputes some of the findings and is conducting an internal investigation of the matter.Infuse accounts for about 700 million dollars in annual sales for Medtronic. The product is under investigation by the Senate Finance Committee over the role payments to physicians who may have played how studies were reported.

BEIJING, June 13 (Xinhua) -- The Chinese government on Monday launched a week-long campaign throughout the country which aims to make the public think more about food safety.Vice Premier Li Keqiang relayed to the campaign's organizer that it is essential to publicize knowledge and regulations on food safety among the public.Li, member of the Politburo Standing Committee of the Communist Party of China (CPC) Central Committee, said that special operations and severe punishment should be adopted to decrease the likelihood of food safety scandals.As part of the campaign, a food safety inspection team under the National People's Congress (NPC) Standing Committee held a conclusive meeting in Beijing to review its two-month supervisory tour to Jiangsu, Hubei, Sichuan and other four provinces and regions in April and May.A statement released by the inspection team on Monday said it will issue a report on food safety problems to the NPC Standing Committee.China's food safety has become a major public concern since a nationwide tainted milk powder scandal was exposed in August 2008.China's top legislature passed the Food Safety Law in 2009 which was soon followed by a nationwide food safety inspection.In the latest food safety scandal, drinks and food sold on the mainland but produced in Taiwan have been found to contain the toxic plasticizer DEHP.China's Ministries of Public Security, Agriculture, Health, as well as the General Administration for Quality Supervision, State Food and Drug Administration are also involved in the campaign.

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