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WASHINGTON, Oct. 3 (Xinhua) -- Researchers at St. Michael's Hospital in Canada have discovered a new function for an enzyme that may protect against organ injury and death from anemia, according to a study appearing Monday in the U.S. journal of the Proceeding of the National Academy of Sciences.Researchers found that when people have anemia, neuronal nitric oxide synthase (nNOS) -- an enzyme in nerve cells that produces nitric oxide, an important signaling molecule in the body -- increases the body's ability to respond, adapt to low oxygen levels and makes the body more efficient in delivering oxygen to tissues. They also found that levels of nNOS in the brain increased in anemic mice, and that the mice without this enzyme die earlier, and with higher hemoglobin levels."Identifying this mechanism may lead to new therapies and approaches to improving outcomes for anemic patients," said Dr. Greg Hare, a researcher at the Li Ka Shing Knowledge Institute of the hospital and one of the lead investigators of the study.Anemia occurs when blood has a lower than normal number of red blood cells or hemoglobin -- an iron-rich protein that carries oxygen from the lungs and heart to the rest of the body. Cells need oxygen to survive and to produce energy for all bodily functions. The condition has many different causes including infection (malaria, HIV, parasites), nutritional deficiencies (iron, folate, B12), genetic mutations, pregnancy, trauma and surgical blood loss."This research will help us identify when an anemic patient is at greatest risk for injury and death when undergoing surgery," said Hare. "Research is underway to test these findings in humans."

BEIJING, Oct. 25 (Xinhua) -- Chinese State Councilor Dai Bingguo said Tuesday that China will unswervingly pursue a path of peaceful development and play a constructive role in the United Nations.Dai made the remarks at a reception commemorating the 40th Anniversary of the restoration of the lawful seat of the People's Republic of China in the United Nations (UN).On Oct. 25, 1971, the 26th Session of the UN General Assembly adopted Resolution 2758 with an overwhelming majority and decided to restore the lawful seat of the People's Republic of China in the UN."This opened a new chapter in the external relations of the People's Republic of China and promoted the friendship and cooperation between China and all countries and peoples who love world peace and justice," Dai said at the reception hosted by the Foreign Ministry in Beijing.It also enhanced the universality, representativeness and authority of the UN and strengthened the forces for world peace and human progress, he added.He said, for the past 40 years, as the largest developing country and a permanent member of the UN Security Council, China has followed the purposes and principles of the Charter of the United Nations, called on countries across the globe to practice tolerance and live together in peace as good neighbors, and made great contributions to world peace, common development and international cooperation.This year marks the beginning of the second decade of the new century, and the world has undergone great, rapid and drastic changes, Dai said."The international community is becoming a global village and countries find interests converging in a scope and depth never seen before," he said, adding that the trend of peace, development and cooperation has gained more popular support, while the international situation remains quite fluid and complex.He said the United Nations, as the most universal, representative and authoritative inter-governmental organization, should seize opportunities and meet challenges in the political, security, economic, development, social, humanitarian, cultural, arms control, and judicial fields, among others, and reinvigorate itself with fresh vigor and vitality."Under the new circumstance, the role of the UN should only be strengthened, rather than weakened, and its authority be upheld, rather than impaired," he said.China has released the White Paper on China's Peaceful Development, which solemnly declared that China will unswervingly pursue the path of peaceful development, he said.China will work actively, through peaceful, open, scientific and common development, to expand international cooperation, take part in international affairs, honor its due international responsibilities and obligations, and play a constructive role in the UN, he said.Dai pledged that China will join other countries to make even greater contributions to building a harmonious world of durable peace and common prosperity and a brighter future for mankind.China's entry to the UN 40 years ago made the international body a more representative international organization, said Kasymzhomart Tokaev, director-general of the UN Office at Geneva.He said China has played an important role in the UN.With the rise of its global status and influence, China, as a major power, will continue to shoulder its responsibility and play a more positive role in creating a more secure, just and peaceful world for future generations, he said.Before the reception, Dai had a brief meeting with Tokaev, exchanging views on the UN's role as well as China's cooperation within the UN.

WASHINGTON, Oct. 19 (Xinhua) -- A total of 25 people have been killed in 12 U.S. states in a listeria outbreak traced to Colorado cantaloupes, the U.S. Centers for Disease Control and Prevention ( CDC) said Wednesday.The number of people sickened by the tainted cantaloupes has reached 123 in 26 states, with Pennsylvania reporting its first case. One of the ill patients, a pregnant woman, suffered a miscarriage, the CDC said in a telebriefing.The listeria outbreak has been the most deadly one since 1998, according to the CDC.Listeria is a common bacterium that typically causes mild illness in healthy people, but can cause severe illness in older people and those with compromised immune systems. It also can cause miscarriages and stillbirths in pregnant women and severe infections in new babies.The CDC estimates that about 48 million people in the U.S. each year get sick from tainted food, with about 128,000 hospitalized and 3,000 deaths.

WASHINGTON, Dec. 5 (Xinhua) -- Young women may reduce their risk of developing cardiovascular disease simply by eating more fish rich in omega-3 fatty acids, researchers reported Monday in Hypertension: Journal of the American Heart Association.In the first population-based study in Danish women of childbearing age, those who rarely or never ate fish had 50 percent more cardiovascular problems over eight years than those who ate fish regularly. Compared to women who ate fish high in omega-3 weekly, the risk was 90 percent higher for those who rarely or never ate fish.About 49,000 women, 15-49 years old, median age of just under 30 years in early pregnancy -- were interviewed by telephone or answered food frequency questionnaires about how much, what types and how often they ate fish, as well as lifestyle and family history questions.Researchers recorded 577 cardiovascular events during the eight- year period, including five cardiovascular deaths in women without any prior diagnosis of the disease. In all, 328 events were due to hypertensive disease, 146 from cerebrovascular disease, and 103 from ischemic heart disease. Inpatient and outpatient admission for cardiovascular disease was much more common among women who reported eating little or no fish. In three different assessments over a 30-week period, women who never ate fish had a three-fold higher disease risk compared to women who ate fish every week."To our knowledge this is the first study of this size to focus exclusively on women of childbearing age," said Marin Strom, lead researcher and post doctoral fellow at the Center for Fetal Programming, at Statens Serum Institute in Copenhagen, Denmark. " We saw a strong association with cardiovascular disease in the women who were still in their late 30's."Fish oil contains long chain omega-3 polyunsaturated fatty acids, which are believed to protect against heart and vascular disease. Few women in the study took fish oil supplements, so these were excluded from the analyses and the results were based on the dietary intake of omega-3 fatty acids, not intake from supplements.The most common fish consumed by women in the study were cod, salmon, herring, and mackerel."Our study shows that for younger women, eating fish is very important for overall health, and even though we found cardio- protective effects at relatively modest dietary levels, higher levels may yield additional benefits," Strom said.

SAN FRANCISCO, Nov. 7 (Xinhua) -- Google on Monday added a highly-anticipated service to its Google+ social network, allowing businesses and brands to set up their own pages on the site.Named "Google+ Page," the service is a further challenge to its rival Facebook's fan pages, which has become a major promotion strategy for many business brands over the past several years.Unlike Facebook, Google will not charge businesses and organizations for using the scheme, and will not put ads on the pages. The service is expected to enhance the tech giant's other businesses like search and mobile advertising.Some big brand names, such as Burberry, the Barcelona football club and the Muppets, have already set up their pages.Google noted it will not pass on personal data.In addition to big brands, Google also wants small businesses that have or do not have their own websites to use Google+ Pages as their default presences.According to a report by Ad Age Digital, Google+ Pages will soon be location-aware, allowing local businesses to send offers and deals to mobile phones.According to Google, more than 40 million people have opened an account with its social network, which was launched in June. Although the network is growing very quickly, some analysts said it still has a long way to go to become a major threat to Facebook, which has more than 800 million users.

来源：资阳报