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WASHINGTON, Nov. 16 (Xinhua) -- Supervised exercise was shown to be more effective than stenting or medication for improved walking ability in patients with peripheral artery disease (PAD), according to a U.S. study reported Wednesday at the 2011 American Heart Association Scientific Sessions meeting.The research group reported that of 111 patients studied in the randomized trial, the most effective treatment proved to be supervised exercise based on the results of a treadmill test taken at baseline and again at six months. Patients who were in the supervised exercise group improved by a mean of 4.6 minutes in the treadmill test, while the group who received stents improved by a mean of 2.5 minutes. However, researchers found that self-reported quality of life measurements proved to be higher in the group that received stents, even though their ability to walk did not improve as greatly as the group that received supervised exercise rehabilitation.The findings were published in the November issue of the journal Circulation. The researchers believe that more studies are necessary, although supervised exercise may be an effective treatment recommended for PAD patients with claudication.PAD is a condition in which plaque builds up in the arteries and affects blood flow, especially to the legs. It is estimated that between 10 and 12 million people suffer from PAD in the United States. One symptom of PAD is known as claudication, a painful cramping of the leg muscles that limits the patient's ability to walk. It affects nearly 2 million people who suffer from PAD, and results in a sedentary lifestyle and poor quality of life.Current U.S. guidelines for the treatment of claudication include pharmacotherapy, supervised exercise rehabilitation and lower extremity revascularization using stents.

BEIJING, Nov. 19 (Xinhua) -- China on Saturday again called for appropriately addressing the alleged plot to assassinate the Saudi Arabian Ambassador to the United States.Foreign Ministry Spokesman Liu Weimin made the remarks in a written statement in Beijing.The UN General Assembly on Friday adopted a resolution titled "Terrorist Attacks on Internationally Protected Persons," expressing deep concern over the assassination plot and calling on Iran "to comply with all of its obligations under international law."Liu said China abstained from the vote on the resolution, because the case is highly complicated and sensitive at present and relevant parties still have different views on the issue.He said any conclusion or action must be based on comprehensive, impartial, objective and transparent investigation and substantial evidence."Before facts are checked out, parties should adopt a prudent attitude, refrain from jumping to conclusions, and avoid actions that may complicate and worsen the situation," he said.He said China hopes those countries concerned will continue to appropriately address the issue through dialogue and make joint efforts to maintain peace and stability in the Middle East and the Gulf Region.Liu also reaffirmed that China opposes all forms of terrorism, and always stands for compliance with international law and the basic norms governing international relations in handling state-to-state relations as well as the effective protection of the safety of diplomatic personnel.Chinese Permanent Representative to the United Nations Li Baodong previously addressed the UN General Assembly on Friday in order to explain China's position on the issue after he abstained from voting on the draft resolution.

BEIJING, Dec. 10 (Xinhua) -- Pharmaceutical producers will risk having their operation license revoked if they use prohibited chemicals as medicine ingredients or involved in fake drug production, China's drug regulator said in a circular Saturday.The State Food and Drug Administration said it would name and shame pharmaceutical companies if they make phoney medicine and withdraw the operation licenses of pharmacies if they intentionally sell unqualified drugs.The circular came in the wake of several counterfeit medicine scandals uncovered by Chinese police in the past few months.On Nov. 4, police seized more than 65 million imitation medicinal tablets and arrested 114 suspects in a cross-provincial raid on counterfeit drugs.In October, police raided on an illegal drug production and sale network and ended up with the seizure of 190 million yuan (29.9 million U.S. dollars) worth of counterfeit drugs.The suspects were found to have used starch or corn powder as ingredients for bogus medicine, or re-packaged expired pharmaceuticals.Police also found animal feed and chemical pigments in the counterfeit products.

SAN FRANCISCO, Nov. 12 (Xinhua) -- Apple has unveiled a worldwide replacement program for the first-generation iPod nano music player due to overheating battery issues, telling owners to stop using the product and get it replaced for free."Apple has determined that, in very rare cases, the battery in the iPod nano (1st generation) may overheat and pose a safety risk. Affected iPod nanos were sold between September 2005 and December 2006," said Apple in a notice posted late Friday on the support section of its official website.The company said the issue has been traced to a single battery supplier that produced batteries with a manufacturing defect. Since the product is five or six years old now, the likelihood of an incident increases.Owners of iPod nano can check the serial number on the back of the product to see if it is eligible for replacement. Apple promises a replacement unit about six weeks after the company received the affected one.The overheating battery issues of the first generation iPod nano have been known for years. In 2008, Japan's Ministry of Economy, Trade and Industry launched an investigation into Apple after dozens of iPod overheating cases were reported, including several incidents of iPod nanos toasting to the point of catching fire and causing minor burns to owners.Last August, a commuter train in Tokyo was delayed during rush hour when passengers complained of a strong burning smell from an overheating iPod nano that had burst apart.The portable music player also cost Apple a 22.5 million-U.S. dollar settlement in 2009 when a class action lawsuit in California alleged iPod nano is prone to scratches and its alleged defects were not disclosed by the company.

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