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BEIJING, Jan. 9 (Xinhua) -- The United States Treasury Secretary Timothy Geithner will discuss economic ties and exchange views with Chinese officials on the global economic situation during his trip to China, Foreign Ministry spokesman Liu Weimin said on Monday.Liu said at a regular press briefing that Geithner will visit China from Jan. 10 to 11 as the U.S. President's special representative. Premier Wen Jiabao, Vice President Xi Jinping, Vice Premier Li Keqiang and Vice Premier Wang Qishan will meet with him during the visit.Liu said China and the U.S. have agreed to build a partnership of cooperation based on mutual respect and mutual benefit."The global economic and financial situation is facing severe challenges. Further strengthening China-U.S. economic and trade cooperation will be helpful in meeting these challenges," Liu said."China has proposed further promoting the two countries' economic and trade cooperation and hopes the U.S. will work with China toward this end," Liu said.

BEIJING, Jan. 23 (Xinhua) -- An online survey has revealed that Chinese people have a mixed opinion on Sunday's Spring Festival TV gala, the 30th of its kind since 1983, albeit many of them agree that there were innovations and improvements in it.As of 10:00 p.m. Monday, about 48 percent of some 71,000 respondents in the poll held by sina.com.cn, one of China's major portal websites, said they think the gala fall short of their expectations.Another 23 percent of them said they think the gala was just fine, and only 10 percent said it was splendid.The gala, an annual grand celebration broadcast by the China Central Television on the eve of the traditional Spring Festival, China's lunar New Year, is the most-watched TV event in the country."I can see the efforts of the gala staff, but it is still not good enough," said netizen "roam the life" at the Sina weibo, a popular Twitter-like microblogging website.At the Sina weibo website, the topic "grumble at the 2012 Spring Festival TV gala" has outnumbered others with over 64 million comments and become the hottest topic of Monday.Nonetheless, many people acknowledge the innovations and improvements in the gala.The gala made some attempts to take a more public-friendly approach by inviting some "grassroots" performers, such as farmer-singer Zhu Zhiwen, as well as cutting all commercials during the broadcast.A dance performance depicting a romance of peacocks and starring Yang Liping, a well-known dancer in China, is the most-followed topic at the gala's official weibo account, drawing over 3,500 comments.The audience was also impressed by a piano duet played by Li Yundi, first prize winner of the the 14th Frederic Chopin international piano competition, and Leehom Wang, a Chinese-American pop singer-songwriter.Moreover, about 59 percent of the online poll respondents said the stage design was quite cool."There are really many improvements in the gala, but it is absolutely difficult to please everyone," wrote weibo user "Wawamiaowaiwai."Unlike their elder generation, the young generation in China has more diversified options for entertainment, and it is of great challenge to attract them at the Spring Festival celebration, said Xia Xueluan, a professor of sociology with Peking University.

WASHINGTON, Dec. 7 (Xinhua) -- Drugs that affect the levels of an important brain protein involved in learning and memory reverse cellular changes in the brain seen during aging, according to an animal study published Wednesday in the Journal of Neuroscience. The findings could one day aid in the development of new drugs that enhance cognitive function in older adults.Aging-related memory loss is associated with the gradual deterioration of the structure and function of synapses (the connections between brain cells) in brain regions critical to learning and memory, such as the hippocampus.Recent studies suggested that histone acetylation, a chemical process that controls whether genes are turned on, affects this process. Specifically, it affects brain cells' ability to alter the strength and structure of their connections for information storage, a process known as synaptic plasticity, which is a cellular signature of memory.In the current study, Cui-Wei Xie, of the University of California, Los Angeles, and colleagues found that compared with younger rats, hippocampi from older rats have less brain-derived neurotrophic factor (BDNF) -- a protein that promotes synaptic plasticity -- and less histone acetylation of the Bdnf gene. By treating the hippocampal tissue from older animals with a drug that increased histone acetylation, they were able to restore BDNF production and synaptic plasticity to levels found in younger animals."These findings shed light on why synapses become less efficient and more vulnerable to impairment during aging," said Xie, who led the study. "Such knowledge could help develop new drugs for cognitive aging and aging-related neurodegenerative diseases, such as Alzheimer's disease," she added.

WASHINGTON, Dec. 7 (Xinhua) -- Drugs that affect the levels of an important brain protein involved in learning and memory reverse cellular changes in the brain seen during aging, according to an animal study published Wednesday in the Journal of Neuroscience. The findings could one day aid in the development of new drugs that enhance cognitive function in older adults.Aging-related memory loss is associated with the gradual deterioration of the structure and function of synapses (the connections between brain cells) in brain regions critical to learning and memory, such as the hippocampus.Recent studies suggested that histone acetylation, a chemical process that controls whether genes are turned on, affects this process. Specifically, it affects brain cells' ability to alter the strength and structure of their connections for information storage, a process known as synaptic plasticity, which is a cellular signature of memory.In the current study, Cui-Wei Xie, of the University of California, Los Angeles, and colleagues found that compared with younger rats, hippocampi from older rats have less brain-derived neurotrophic factor (BDNF) -- a protein that promotes synaptic plasticity -- and less histone acetylation of the Bdnf gene. By treating the hippocampal tissue from older animals with a drug that increased histone acetylation, they were able to restore BDNF production and synaptic plasticity to levels found in younger animals."These findings shed light on why synapses become less efficient and more vulnerable to impairment during aging," said Xie, who led the study. "Such knowledge could help develop new drugs for cognitive aging and aging-related neurodegenerative diseases, such as Alzheimer's disease," she added.

WASHINGTON, Nov. 8 (Xinhua) -- Children with autism have more brain cells and heavier brains compared to typically developing children, according to a study to be published on Wednesday in the Journal of the American Medical Association.The small, preliminary study provides direct evidence for possible prenatal causes of autism.The prefrontal cortex is involved in various higher order functions such as language and communication, social behavior, mood, and attention. Children who have autism tend to show deficits in such functions.Eric Courchesne, of the University of San Diego School of Medicine Autism Center of Excellence, and colleagues conducted direct counts of brain cells in specific regions of the prefrontal cortex in postmortem brains of seven boys who had autism and six typically developing males, ranging in age from 2-16 years. Most participants had died in accidents, but the researchers did not base their selection on causes of death.The researchers found that children with autism had 67 percent more neurons in the prefrontal cortex and heavier brains for their age compared to typically developing children. Since these neurons are produced before birth, the study's findings suggest that faulty prenatal cell birth or maintenance may be involved in the development of autism. Another possible factor that may contribute to the neuronal excess is a reduction in apoptosis, or programmed cell death, which normally occurs during the third trimester and early postnatal life.Though small, this preliminary study examined all relevant postmortem tissue available at the time. The relative scarcity of tissue from very young children may limit future research as well, but efforts to include a larger number of samples are needed to confirm these findings and to identify patterns of age-related changes in autism, the researchers say."Earlier studies of head circumference and early brain overgrowth have pointed us in this direction, but there have been few quantitative neuroanatomical studies due to the lack of postmortem tissue from children with autism," said Thomas Insel, director of the National Institute of Mental Health, in a statement. "These new results, along with an earlier study reporting altered wiring of the prefrontal cortex, focus our attention on this critical area of the brain in autism."

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