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HONG KONG, July 19 (Xinhua) -- A gene controlled by male hormone was critical for the growth of liver tumor, leading to a higher incidence of the disease in men than in women, according to the Chinese University of Hong Kong which made the results public on Tuesday.There is a significant gender bias in liver cancer incidence. In Hong Kong, men are three times more likely to develop liver cancer than women. Such phenomenon prompted researchers from the university to carry out a genomic location analysis in liver cancer cells starting from 2008.The researchers discovered, out of 17,000 human genes, that a gene called Cell Cycle-Related Kinase (CCRK) was directly controlled by androgen receptor. They further found that CCRK was critical for the induction of signaling pathway leading to abnormal liver cell growth and tumor formation.The results also reveal that 70 percent of patients with liver cancer were found to produce high levels of CCRK. More importantly, these patients were more likely to have late-stage cancers and lived shorter than those with low CCRK level.Using mouse models, the researchers found that either lowering the level or blocking the signaling pathway of CCRK in liver cancer cells could significantly reduce the tumor growth rate.The study has validated that CCRK is an important gene that has potential to cause liver cancer and the gene can be tested as a new targeted therapy in future.Vice-Chancellor of the university Joseph Sung, who is also team leader of the research project, said the results explained why men have a higher risk of liver cancer than women and helped push ahead with the development of a novel treatment of the disease.The above study results were published online in July in Journal of Clinical Investigation.

XI'AN, Sept. 18 (Xinhua) -- At least 12 people were killed and 22 others missing over the weekend in rain-triggered landslides in northwestern Shaanxi Province, local officials said.As of 5:30 p.m. Sunday, rescuers had retrieved 10 bodies from beneath the rocks and mud in Baqiao District of the provincial capital of Xi'an, while another five were injured, said Zhu Zhisheng, vice mayor of Xi'an, who was at the site.Another 22 people remained missing, Zhu said, adding the injured were hospitalized and in stable condition.The landslide around 2 p.m. Saturday unleashed about 100,000 cubic meters of rock and mud down the mountain, engulfing a brick factory and destroying part of a nearby ceramics factory in the suburban district of Xi'an.Rescuers found four bodies on Saturday night and six others were retrieved on Sunday.More than 700 police, firefighters and local residents joined the rescue which went on Sunday night.However, the rescue was hampered by three ensuing slides between 10 a.m. and 11 a.m. Sunday as heavy rains continued slashing the city.About 10,000 cubic meters of newly-triggered rock and mud roared down to the site, forcing rescuers to suspend searching temporarily.Heavy downpours in the province also caused havoc in other areas.A heavy rainfall on Saturday night triggered a landslide that buried a residential house in the suburban district of Jintai in Baoji City, some 175 km to the west of Xi'an.Two people were dug out but later died after they were rushed to a nearby hospital, the municipal government of Baoji said in a statement Sunday.The downpours also brought a landslide in the same district early Sunday morning. Three people were saved and sent to a local hospital, according to the statement.The three wounded were in stable condition, doctors at the hospital said.

SAN FRANCISCO, June 28 (Xinhua) -- Google on Tuesday rolled out a new social networking service named "Google+", a long awaited move of the Internet search giant to crack the industry's social trend dominated by Facebook.Unlike Facebook, Google said that the project is designed for sharing with small groups like college roommates and parents. " Today's online services turn friendship into fast food, wrapping everyone in 'friend' paper," Google said in a blog post announcing the new service.Other Google+ features include Sparks, which gathers articles and videos on topics of interests or hobbies; and Hangouts, which allows users join live multi-person video chat.There is also a mobile version of Google+ for smartphones running Google's Android operating system, which enables multi- person text message chats and instant upload of photos from the phone.The Google+ project is currently in field trial and by invitation only. Users can select people from their Gmail contacts and organize them into different groups.Google+ is expected to test whether Google could come back from its past frustration in social networking, such as Buzz, a social networking and messaging too integrated into its Gmail service. Some of Google Buzz's features have been widely criticized for privacy concerns.Market research data show that Facebook has surpassed Google in terms of time spent on each site, a fact that advertisers attach importance to.According to Internet market research company comScore, including YouTube, 180 million people visited Google sites in May, compare to 157.2 million on Facebook. However, Facebook users looked at 103 billion pages and spent an average of 375 minutes on the site, while Google users viewed 46.3 billion pages and spent 231 minutes.In April, Google CEO and co-founder Larry Page reportedly sent out a company-wide memo alerting employees that 25 percent of their annual bonus will be tied to the success or failure of Google's social strategy in 2011.

NAIROBI, Aug. 18 (Xinhua) -- The World Health Organization (WHO) on Thursday decried increased number of confirmed cholera cases in the Somalian capital Mogadishu, and growing reports of acute watery diarrhea in Kismayo and other crowded urban centers, saying an urgent multi-sector response to contain the spread of this highly contagious disease is being mounted.The UN health agency said has confirmed cholera in Banadir, Bay, Mudug and Lower Shabelle regions and the number of acute watery diarrhea cases has increased dramatically in the last few months.WHO Representative for Somalia Marthe Everard said combination of poor sanitation conditions, a shortage of safe water, overcrowding and high malnutrition rates, creates the perfect combination for infectious diseases, such as cholera and pneumonia, to spread and increase the number of deaths. "For the last few years, a network of health workers reporting to the early warning system is in place, however they report through a health facility or mobile clinic. Yet the large numbers of displaced people in Mogadishu are making it more difficult to record the various diseases," Everard said in a statement issued in Nairobi. "We urgently need more mobile clinics that will provide basic health care services to the many displaced and who will strengthen the reporting on new outbreaks. This is critical to our response and our ability to save lives."According to WHO, about seventy-five percent of all cases of acute watery diarrhea are children under the age of five.Since January this year, 4,272 cases of acute watery diarrhea/ cholera have been reported in Banadir Hospital in Mogadishu alone. However, at this stage most of the cholera cases in the various regions are contained and under control. "Our major concern is to monitor and detect new disease outbreaks in the many informal settlements set up by internally displaced people in and around Mogadishu", says Everard.Although cholera is endemic in the country, the last major cholera outbreak was in 2007 with an estimated 67,000 cases.WHO said recent efforts to cholrinate the water supply of Mogadishu, along with efforts to improve hygiene and sanitation have prevented a serious outbreak but with the large influx of some 100,000 people alone this year into Mogadishu, bringing the total number of IDPs in the capital to an estimated 470,000, many are living in overcrowded settlements, there is an acute shortage of safe water and adequate sanitation. "There is no need for a child to die of diarrhea, yet this is tragic reality for a Somali child, who is acutely malnourished. It is a lethal combination." said Rozanne Chorlton, UNICEF Representative for Somalia. "These types of diseases can be prevented and treated quickly, but to save children's lives we need to make sure safe water, sanitation and hygiene along with early access to primary health care, are an integral part of our emergency response."WHO said partners in the health and water and sanitation sectors are currently preparing for a potential 100,000 cholera cases including 80,000 moderate cases and 20,000 severe cases.Emergency diarrheal disease kits made up of medical supplies such as syringes, infusions, and oral rehydration fluids (ORS), already prepositioned by UNICEF and WHO have been sent to 13 hospitals.An additional 200 diarrheal disease kits, each able to treat 100 severe cases and 400 moderate cases are being procured and should be in Southern Somalia in the next few weeks, it said.In addition, WHO said, the case management of severe dehydration with and without malnutrition is being strengthened and focus is now on mobilizing a network of already trained community health promoters to move from door to door with health hygiene education messages. "Health posts will be stocked with essential medicines and ORS to identify and promptly treat patients. Many of Southern Somalia' s rural areas and urban centers rely on shallow wells, which unless protected or treated with chlorine can serve as the perfect breeding ground for water borne diseases," it said.To respond to this threat and prevent a major outbreak, the UN health agency said partners in the water, sanitation and hygiene sector are scaling up their actions to target 1.5 million people across high risk areas of the south.Supplies of chlorine and essential items for hygiene and household treatment and storage of water are being distributed.Already 217 water sources are being chlorinated and 58 water point outlets benefitting 483,200 residents and internally displaced people in Mogadishu.In addition, household hygiene supplies, including water purification tablets, soap and buckets, enough for 48,000 families, are being distributed at existing feeding centers for malnourished children.Campaigns to educate families about the treatment of drinking water, safe disposal of waste and encourage hand washing with soap will also be scaled up in high risk communities.As part of the updated 2011 UN Consolidated Appeal for Somalia, an estimated 80 million U.S. dollars is needed for the health sector and 78 million dollars is required for the water, sanitation and hygiene sector.So far, each sector has respectively raised 30 percent and 37 percent of the required money.

WASHINGTON, July 12 (Xinhua) -- Two U.S. astronauts stepped out the International Space Station on Tuesday to retrieve a failed ammonia pump, which is the last spacewalk of the shuttle era, NASA announced.Space station astronauts Mike Fossum and Ron Garan completed the six-hour, 31-minute spacewalk at 3:53 p.m. EDT (1953 GMT). The duo retrieved a pump module from an external stowage platform on station and store it in shuttle Atlantis' cargo bay for return to Earth.The pump module failed in 2010, shutting down half of the space station's cooling system. Engineers will evaluate the module to determine the cause of the failure and plan to refurbish it for use as a spare.The astronauts also attached a Robotic Refueling Module experiment to the space station, which aims to test technologies for repairing and refueling satellites in space.It was the 249th spacewalk by U.S. astronauts and the 160th spacewalk in support of space station assembly and maintenance, totaling 1009 hours, nine minutes.Atlantis lifted off on Friday morning from Kennedy Space Center in Florida, on the 135th and final flight in NASA's shuttle program. Its return to the earth later this month will mark the end of the 30-year shuttle program.

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