郑州郑州眼科(郑州郑州做近视手术哪家好) (今日更新中)

WASHINGTON, May 17 (Xinhua) -- A variation in a gene involved in regulating cholesterol in the bloodstream also appears to affect progesterone production in women, making it a likely culprit in a substantial number of cases of their infertility, a new study from Johns Hopkins University researchers suggests.The Hopkins group has also developed a simple blood test for this variation of the scavenger receptor class B type 1 gene ( SCARB1) but emphasized there is no approved therapy yet to address the problem in infertile women.Following up studies in female mice that first linked a deficiency in these receptors for HDL -- the so-called "good" or " healthy" cholesterol -- and infertility, researchers report finding the same link in studies of women with a history of infertility.The findings has been published on-line this week in the journal Human Reproduction.If the new study's findings hold up on further investigation, the John Hopkins team says they not only will offer clues into a genetic cause of some infertility, but could also lead to a treatment already shown to work in mice."Infertility is fairly common and a lot of the reasons for it are still unknown," warns endocrinologist Annabelle Rodriguez, an associate professor of medicine at the Johns Hopkins University School of Medicine and the lead author. "Right now, the benefit of this research is in knowing that there might be a genetic reason for why some women have difficulty getting pregnant. In the future, we hope this knowledge can be translated into a cure for this type of infertility."

BEIJING, Feb. 2 (Xinhua) -- Two more planes flew 435 more Chinese back home from Egypt Wednesday afternoon.An airliner with 213 Chinese from Cairo landed at the Beijing Capital International Airport at 2:19 p.m., and another with 222 Chinese including many Hong Kong people from Luxor landed at a Hong Kong airport at 3:25 p.m..These flights were another strive of the Chinese government and airline operators to get stranded Chinese nationals out of Egypt, where anti-government demonstrations have led to chaos in several major cities including Cairo.So far, 1371 stranded Chinese had been taken home by six flights.

KAMPALA, May 14 (Xinhua) -- The deadly Ebola hemorrhagic fever has broken out in Uganda, killing one person and leaving over 30 others being monitored by health officials, ministry of health announced here on Saturday.The epicenter of the outbreak is in the central Ugandan district of Luwero located about 50 km north of the capital Kampala.According to Anthony Mbonye, head of the community health department at the ministry of health, a 12 year old girl in Zirombwe Sub-county developed symptoms of Ebola and when she was admitted at a military hospital in the district, laboratory test confirmed that it was Ebola.The Ebola virus is highly contagious and causes a range of symptoms including fever, vomiting, diarrhea, generalized pain or malaise and in many cases internal and external bleeding.The girl died on May 6 and about 30 people who she got contact with are being asked to not get into contact with the public as health officials monitor them for about 21 days.The 30 people have not yet developed the symptoms but if they do, they will be isolated from the public.Mbonye said that preliminary investigations have showed that this Ebola virus is similar to the one that broke out in Sudan, thus named Sudan Ebola.The epicenter of the outbreak is also located along the high way to southern Sudan.This viral subtype has a human case fatality rate of 60 percent meaning that it will kill 60 percent of the infected people.The other subtype is the Congo Ebola which also attacked Uganda in 2007. This one has a human case fatality rate of over 80 percent.The 2007 outbreak which occurred in the western district of Bundibugyo bordering eastern Democratic Republic of Congo claimed 37 lives out of the 148 infected.Mbonye said that there also ongoing investigations to find out whether the index case got into contact with moneys or bats, the known reservoirs of the Ebola virus.Following the outbreak, government has reactivated the National Ebola Task Force (NETF) to coordinate the fight against the disease at the national level.District task forces are also in the process of being formed according to Mbonye, who is the chairperson of the NETF.

BEIJING, Feb. 15 (Xinhua) -- China's health authorities Tuesday vowed to improve their response to food safety incidents.The ministry would issue a protocol "as early as possible" on how to respond to and investigate food safety incidents, said Vice Health Minister Chen Xiaohong at a national meeting on food safety in Beijing.It would also provide better training for officials and professionals working in the field, Chen said.Last year, the ministry initiated investigations into several incidents such as milk powder that allegedly caused infant girls to grow breasts and illegal soup additives by restaurants.In the milk powder case, the investigation found no evidence that Synutra International's products had caused the problem. Media reports said the company was the victim of dirty tricks by a rival firm.In addition, the ministry blacklisted 48 substances illegally added to food and 22 misused food additives last year.The ministry would include projects related to food safety in state-sponsored health programs giving free medical services to the public in next five years, Health Minister Chen Zhu said at the same meeting.But Chen did not give details about what kind of projects they will be.Under the current six state health programs, the government provides free cataract surgery for the needy, free breast and cervical examinations for rural women, free hepatitis B vaccines, free folic acid pills for rural women, new cooking stoves in rural homes to prevent fluorine poisoning caused by coal stoves as well as modern toilets for rural residents.

BEIJING, Jan. 21 (Xinhua) -- Chinese Vice Premier Li Keqiang on Friday stressed the importance that local governments improve management of land and resources, as it remains vital for the stable and relatively quick development of the nation's economy.Li said China faced the difficult tasks of land and resource management as resources are becoming scarce amid the country's quickening industrialization, urbanization, and agricultural modernization.He said the nation must continue preserving arable land. To ensure grain security, China set a "red line" to guarantee its arable land never shrinks to less than 1.8 billion mu (120 million hectares).Chinese Vice Premier Li Keqiang (R) shakes hands with outstanding representatives from local departments in charge of land and resources in Beijing, capital of China, Jan. 21, 2011.Li also called on local authorities to step up efforts to protect valuable mineral resources while using resources more efficiently and in a frugal manner.At the same time, the senior Chinese official said land should be guaranteed for the nation's plan to build 10 million affordable houses for low and middle income people this year.Further, Li urged local authorities to improve work in monitoring and taking precautionary measures against geological disasters to ensure the safety of people's lives and property.

来源：资阳报