济南切割包皮的办法(济南前列腺治疗会导致尿失禁吗) (今日更新中)

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.

BEIJING,Nov. 9 (Xinhuanet) – Yinghuo-1, China's first interplanetary spacecraft, is set to hitch a ride with Russia's Phobos-Grunt Mars mission in the early hours on Wednesday, after a two-year delay.A Zenit-2SB rocket will carry Yinghuo-1 and Phobos-Grunt into space from the Baikonur Cosmodrome launch site in Kazakhstan.It is China and Russia's first joint Mars operation and also marks China's first voyage to the Red Planet, China Great Wall Industry Corp said in a news release on Tuesday.Yinghuo-1 will work in orbit with Phobos-Grunt for more than 12 months in collecting data on the Martian atmosphere.Both spacecraft will travel for more than 10 months before entering Martian orbit. During the trip, Yinghuo-1's power supply, communications and temperature gauge will be controlled from the Russian craft, scientists said.Both craft will orbit the planet three times before decoupling. The 106-kg Yinghuo-1 will circle Mars in an elliptical orbit, while Phobos-Grunt will actually land on Phobos, one of the two Martian moons, and bring back soil samples to Earth."The collaboration with Russia will enhance China's ability in deep space exploration, improve spacecraft design and development, and promote planetary exploration," said an unnamed official with the corp, a subsidiary of the China Aerospace Science & Technology Corp. Russia's Lavochkin Research and Production Association signed a cooperation contract, based on an agreement between the Chinese and Russian governments, with China Great Wall Industry Corp in 2007.Yinghuo-1, with a two-year lifespan, also has its own scientific goals.These include analyzing the planet's magnetic environment and ionosphere (upper atmosphere), taking images of topographical features and studying gravity fields on the Martian equator.Pang Zhihao, deputy editor-in-chief of the monthly publication, Space International, said China's focus on the planet's upper atmosphere is significant.Twenty detectors have explored parts of Mars, but most of them have looked for traces of life or water or places suitable for setting up colonies, he said.But studying the upper atmosphere is also vital if humans are to live on the planet, he said.The mission was set for October 2009, but later postponed to this year to enhance the reliability of the project.Only the United States, the former Soviet Union and the European Union have succeeded in landing probes on Mars. Five are in operation, four belong to the US and one belongs to the EU.At least 21 probes sent to the planet have failed. The Shanghai Academy of Spaceflight Technology under the CASC, which designed Yinghuo-1 in 23 months, said that the satellite posed a major technological challenge as the furthest space destination for China before had been the moon. The moon's average distance from Earth is about 384,000 km. The distance between Mars and Earth, depending on orbits, ranges from approximately 55 million km to about 350 million km.Yinghuo-1 will have to endure periods in the freezing dark side of the planet.It underwent simulated tests that matched the Martian temperature, - 260 C.Because of the distances involved, the satellite cannot rely on ground control to adjust position. It will rely on its own onboard computer, scientists said.

SUVA, Oct. 3 (Xinhua) -- It is Pinktober again and Fiji like the rest of the world will be raising awareness of breast cancer too, Fiji Cancer Society Chairperson and breast cancer awareness month President Nirmala Nambiar has said."Join the fight against breast cancer through early detection and awareness." This is the message the Fiji Cancer Society is sending out this October, which is breast cancer awareness month, worldwide.Fiji Cancer Society Chairperson and breast cancer awareness month President Nirmala Nambiar said, "Fiji continues to have a high incidence of breast cancer deaths with large number of tumors presented to health professionals at a late stage due to the stigma of having the disease."In the first quarter of 2011, there were 46 new breast cancer cases recorded, whilst there were 33 new cases in the same period last year."The figures could be scary but one must understand that as the awareness increases in our communities the number of cases recorded increases," she warned.Men and women should be aware that age, obesity and family history are all factors that contribute to the risk of developing the disease.This October the Fiji Cancer Society has planned a number of events all targeted to raise awareness since the lack of information and education is dangerous.Nambiar said through partnership with the Ministry of Health, Oxfam Clinic in Suva and the Fiji Nurses Association, supported by the sponsorship of Colgate Palmolive, the focus this year is on reaching out to the rural community and making a difference to the lives of the poor and unprivileged."We have free checkups planned for the month at the major villages from Vunidawa, Korovou and Valelevu to Lami at the other end and hope that we will be able to support the women in this area who may not be able to have a check- up otherwise.According to the official, the society's western branch continues to arrange free check- ups with the support of the Patan Clinic.The awareness and free checkups have also been arranged for corporate organizations at their request and if we are not able to provide all this during October we will continue to schedule them for the following month.The Society's thanks go to Suva Private Hospital for offering half price mammograms for the month of October, Nambiar said, adding a common issue with Fiji women, according to doctors at the hospital, was the return rate."Once they hear the news that they have cancer, many women don' t return because of the fear of what's next. Hence the Society is working with the hospitals and helping counsel patients to get them back for treatment rather than fight the losing battle, since 70 percent of cancer cases can be saved through early detection and treatment," she said.The Fiji Cancer Society strongly believes that the success of the awareness program this month will set the platform for the society's ongoing initiative to drive and raise the community's understanding, get them involved and make them take care of each other. 

ADDIS ABABA, Dec. 2 (Xinhua) -- Xie Xiaoyan, the newly appointed Chinese ambassador to Ethiopia and the African Union (AU) on Friday presented his letter of credence to Jean Ping, chairperson of the AU Commission (AUC) at his office in Addis Ababa, Ethiopia.After presenting the credential letter to Ping at the AU headquarters, Ambassador Xie held talks with the AUC chief on the relations and cooperation between China and the union of 54 member countries.The Chinese government has constructed a state-of-the-art office complex and conference hall for the AU with an outlay of around 125 million U.S. dollars, a project that demonstrates the friendship between China and Africa.

TEHRAN, Dec. 8 (Xinhua) -- Iranian inventors ranked first in the Seoul International Invention Fair (SIIF) in South Korea, the official IRNA news agency reported on Thursday.The three-member Iranian team from Tabriz city of Iran's northwestern East Azerbaijan province was ranked first by winning one gold and one silver medals in the fields of development and environment, said the report.South Korea, the United States and Chinese Taipei were selected as other three top teams after Iran.The Seoul International Invention Fair was held in the COEX Korea Exhibition Center from December 1 to 4, at which Some 700 participants from 32 countries and regions took part.

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