上海看食管静脉瘤最好的医生是谁(上海红豆杉抗肿瘤的用法) (今日更新中)

WASHINGTON, June 6 (Xinhua) -- Women who have higher levels of the appetite-controlling hormone leptin have fewer symptoms of depression, and this apparent inverse relationship is not related to body mass index (BMI), a new study finds. The results were presented Monday at The Endocrine Society's 93rd Annual Meeting in Boston, the United States."Animal data suggest that leptin may reduce anxiety and improve depression. Our study in women suggests that leptin may indeed have antidepressant qualities," said the study's lead author, Elizabeth Lawson, of Massachusetts General Hospital and Harvard Medical School in Boston.Leptin, the product of fat cells, signals satiety, or fullness. It is low in thin women and high in obese women, according to Lawson. She also said there is an increased prevalence of anxiety and depression in certain conditions in which leptin levels are typically low. These include the eating disorder anorexia nervosa, in which there is abnormally low weight and body fat, and functional hypothalamic amenorrhea, in which women have stopped menstruating despite having normal weight."It is unknown whether low leptin levels contribute to the development of mood disorders in these women," Lawson said.She and her co-workers studied the relationship between leptin levels and symptoms of anxiety and depression in 64 women. Fifteen of the women had anorexia nervosa, 12 were normal weight with hypothalamic amenorrhea, 20 were normal weight and in good health, and 17 were overweight or obese but still healthy.All subjects were asked questions to assess symptoms of depression and anxiety, with high scores indicating more symptoms. Besides measuring leptin levels in the blood, the researchers assessed the women's BMI, a measure of weight for height.The relationship between leptin and depression symptoms was independent of BMI. This finding indicates that leptin may mediate symptoms of depression and that this effect is not a function of low weight, Lawson said."Further research administering leptin to humans will be important in understanding whether this hormone has a potential role in the treatment of depression," she said.

BEIJING, Aug. 15 (Xinhua) -- Scientists in a lab with Daya Bay Nuclear Power Station in southern Guangdong Province have found neutrino through two detecting instruments, which is likely to provide clues to solving the mystery of why there is more matter than antimatter in the universe.The Institute of High Energy Physics with the Chinese Academy of Sciences on Monday announced the breakthrough that was achieved by more than 250 researchers from six countries and regions.The two neutrino detectors are installed underground 360 meters away from the nuclear plant at a depth of 100 meters.Scientists believe that matter and antimatter were created in equal amounts during the Big Bang, but the disappearance of antimatter remains a mystery.Neutrino is an elementary particle that is able to pass through ordinary matter almost unaffected, which makes it extremely difficult to detect.Located in Shenzhen, a city neighboring Hong Kong, the Daya Bay Nuclear Power Station commenced operation in 1993.Scientists from the Chinese Academy of Sciences and the U.S.-based Brookhaven National Laboratory and the Lawrence Berkeley National Laboratory started the underground neutrino experiment in 2006.Kam-Biu Luk, spokesman for the laboratory, said that the results of the experiment would further shed light on the evolution of basic matter after the Big Bang.The neutrino experiment in the Daya Bay is one of the largest cooperation projects with regards to basic research between China and the United States.Among the participants of the experiment are Russia, Czech Republic, and China's Hong Kong and Taiwan regions.

NANNING, Sept. 1 (Xinhua) -- In south China's Guangxi Zhuang Autonomous Region, an area renowned for its history of musical folklore, local residents have found a unique way to spread knowledge regarding AIDS prevention."All people unite to fight AIDS! AIDS will stay away if we are equipped with AIDS knowledge," state the lyrics of one song that was penned by local songwriters as part of a local anti-AIDS campaign."We asked eight local singers to write and record songs about the disease. We think this is an effective way for local people to acquire AIDS knowledge," said 55-year-old Huang Zhanghui, a resident of the village of Shantun. He said that the songs are played through loudspeakers in his village every evening.The songwriting campaign has been effective because folk songs are a traditional artform in the region, making them more readily understandable and acceptable for local residents, Huang said.Guangxi has been one of the hardest-hit areas in China in terms of the number of AIDS infections discovered there, ranking only after central China's Henan Province. More than 76 percent of the infections are sexually transmitted, according to Ge Xianmin, an official from the AIDS prevention office of the Guangxi regional government.Bama County, which administers Shantun, is known for the longevity of its residents. Nearly 2,500 of its residents are more than 80 years old, and another 81 have celebrated their 100th birthdays."We will not let AIDS threaten this tradition," Huang said.Huang was selected to be the head of the village's AIDS prevention office just two months ago. In addition to the creation of folk songs, the office spreads AIDS prevention knowledge through text messages and publicly screened films.

CANBERRA, Aug. 29 (Xinhua) -- An Australia report released on Monday draws a direct link between inaction on climate change and long-term social and mental health problems.The Climate Institute report, A Climate of Suffering: The Real Cost of Living with Inaction on Climate Change, points that in the wake of extreme weather in Australia, such as cyclones and droughts, there is an increase in depression, anxiety, post- traumatic stress and substance abuse.As many as one in five people reported "emotional injury, stress and despair" in the wake of these events.The report also warns continuing catastrophic weather events are creating anxiety and insecurity for children at levels not seen since the Cold War.It claims one in 10 children of primary school age showed symptoms of post-traumatic stress disorder after Cyclone Larry in 2006.According to Professor Ian Hickie, from the Brain & Mind Institute, regional and remote communities are most vulnerable to the impact of climate change.He said a recent study of rural New South Wales where, following the long drought, self-harm and suicide rose by up to eight percent."I think what we are seeing now is a much more significant counting of not just the short-term costs and reactions but the longer-term costs, the loss of community cohesion and that being essential to people's long-term mental health," Professor Hickie."The drought was a particularly instructive event for everyone in Australia and we saw a lot of focus for the first time on the mental health effects, particularly suicides in rural families, the effect on rural communities of prolonged examples of weather change," Hickie said.Climate Institute chief executive John Connor said that not only did natural disasters cost taxpayers about nine billion U.S. dollars last year, but there are also damaging Australia's social fabric.He said that with Australian regions increasingly exposed to extreme weather, recognizing and managing the risks of climate change is essential, and it is an insurance policy to protect Australia's communities.The study came as the political and social debate over Australian federal government's proposed carbon tax intensifies.In 2007, a report by the Commonwealth Scientific and Industrial Research Organization (CSIRO) projected the effects of various greenhouse gas emission scenarios for 2030, 2050 and 2070.It said droughts were likely to become more frequent, fire danger was set to increase and tropical cyclones were likely to become more intense.

SINGAPORE, July 3 (Xinhua) -- The over 60 nursing homes in Singapore, especially those run by voluntary welfare organizations, are facing a bed crunch, local daily Straits Times reported on Sunday.The newspaper found in a check with 20 homes that more than half of the nursing homes were running at full or almost full capacity. Homes run by voluntary welfare organizations, where there are subsidized beds, have long waiting lists.The average waiting time for a bed in nursing homes run by voluntary welfare organizations rose from 50 days in 2008 to about 60 days early last year, the newspaper said.It is easier to get a bed in a privately run home, though only slightly and if you can afford it. Econ Healthcare Group, which runs eight nursing homes in Singapore, said the occupancy rate is 99 percent and it has waiting lists of up to 20 people at some branches.Demand for nursing homes in the city state can only grow given the aging population. By 2030, the number of people aged 65 or above is projected to reach 900,000, or one in every five residents.

来源：资阳报