（法新社巴黎8日電） 美國實驗室研究今天指出，
研究人員4年前發現有助不運動老鼠肌肉生長的藥物，
可能也能預防中暑。
研究報告作者表示，如果經過進一步測試，這種化
合物可能幫助不耐高溫的運動員或士兵，避免在酷熱的
天氣中中暑身亡。
研究人員2008年發現，1種名為AICAR的藥物能促進
實驗室中整天不動老鼠的肌肉生長並增加耐力，因此獲
得「沙發馬鈴薯藥丸」的稱號。AICAR現在已被廣泛運
用於治療多種肌肉疾病和代謝失調。
美國研究人員發表於「自然醫學雜誌」（Nature
Medicine）的研究報告指出，他們偶然發現，AICAR也
能預防老鼠出現惡性高熱的失調情況。
這種致命症狀與第一型理阿諾鹼受體（RYR1）的諸
多基因缺陷有關。老鼠和人類體內都存有第一型理阿諾
鹼受體基因。
體溫升高會造成肌肉細胞鈣質流失，引發分子串聯
反應，最終促使肌肉萎縮和分解。
受損的肌肉細胞釋出鉀和蛋白質，並進入流動的血
液，達到有毒程度後，會導致心臟或腎衰竭。（譯者：
中央社張詠晴）
http://hk.news.yahoo.com/坐收運動肌效藥丸-可兼防中暑-122012658.html
18.1.12
俄稱火星探測器疑受美干擾
俄羅斯傳媒報道，政府正調查是否美國雷達系統干擾俄火星探測器，導致探測器無法進入軌道，墜落地球。
報道說，俄航天局前主管向傳媒透露，調查員會測試美國的雷達系統，是否可以干擾到火星探測器。
負責調查近期航天事故的俄羅斯副總理羅戈津17日對媒體表示，不排除近期墜毀的俄火星探測器「火衛一－土壤」曾受到雷達干擾的可能性，「不過但願這不是事實」。
自本月9日外界稱俄太空總署署長波波夫金曾暗示年內頻發的航天事故與他國作祟有關以來，俄媒體17日開始集中出現類似言論。
17日俄《生意人報》稱，探測器起飛後不久可能曾受到位於馬紹爾群島的雷達干擾而失控。
當日俄新社更引述俄「火衛一－土壤」飛行分析委員會負責人科普捷夫的話說，由於「火衛一－土壤」在繞地球第二周飛越美國雷達上空時，美國雷達確實曾以針對小行星運行軌跡的程序進行運轉，他稱，俄方正在分析美國雷達的這種運作可能對火星探測器產生的影響，並將在近期進行地面試驗。
截至目前，關於失控火星探測器是否受雷達干擾的問題，俄羅斯媒體援引最多的依據是：俄幾次發射的航天器偏離軌道都發生在俄羅斯雷達偵測不到的「暗面」，因此事故頻發不排除外力所致的可能性。
不過，亦有航天專家指出，世界部分航天大國確實擁有反衛星技術，但「火衛一－土壤」失控前並未飛越美國上空，而中國及歐盟更直接參與了這一項目，更不可能予以阻撓或干擾。
美國太空總署前高層反駁俄羅斯，他說根本原因是俄火星探測器本身出現故障，俄羅斯不應把責任歸咎於其他國家。
俄羅斯於2011年11月9日發射的火星探測器「火衛一－土壤」因未能正常變軌飛往火星而停留於近地軌道並失控，最終於本月15日晚21時45分墜入太平洋，這是俄羅斯近15年來的首次火星探測行動，而俄在此前的火星探測史上，亦多敗筆。
就近期的航天事故頻發，俄總統梅德韋杰夫及總理普京責令徹查。按計劃，俄聯邦太空總署應於本月26日遞交一份事故調查報告。
http://hk.news.yahoo.com/俄稱火星探測器疑受美干擾-003012470.html
報道說，俄航天局前主管向傳媒透露，調查員會測試美國的雷達系統，是否可以干擾到火星探測器。
負責調查近期航天事故的俄羅斯副總理羅戈津17日對媒體表示，不排除近期墜毀的俄火星探測器「火衛一－土壤」曾受到雷達干擾的可能性，「不過但願這不是事實」。
自本月9日外界稱俄太空總署署長波波夫金曾暗示年內頻發的航天事故與他國作祟有關以來，俄媒體17日開始集中出現類似言論。
17日俄《生意人報》稱，探測器起飛後不久可能曾受到位於馬紹爾群島的雷達干擾而失控。
當日俄新社更引述俄「火衛一－土壤」飛行分析委員會負責人科普捷夫的話說，由於「火衛一－土壤」在繞地球第二周飛越美國雷達上空時，美國雷達確實曾以針對小行星運行軌跡的程序進行運轉，他稱，俄方正在分析美國雷達的這種運作可能對火星探測器產生的影響，並將在近期進行地面試驗。
截至目前，關於失控火星探測器是否受雷達干擾的問題，俄羅斯媒體援引最多的依據是：俄幾次發射的航天器偏離軌道都發生在俄羅斯雷達偵測不到的「暗面」，因此事故頻發不排除外力所致的可能性。
不過，亦有航天專家指出，世界部分航天大國確實擁有反衛星技術，但「火衛一－土壤」失控前並未飛越美國上空，而中國及歐盟更直接參與了這一項目，更不可能予以阻撓或干擾。
美國太空總署前高層反駁俄羅斯，他說根本原因是俄火星探測器本身出現故障，俄羅斯不應把責任歸咎於其他國家。
俄羅斯於2011年11月9日發射的火星探測器「火衛一－土壤」因未能正常變軌飛往火星而停留於近地軌道並失控，最終於本月15日晚21時45分墜入太平洋，這是俄羅斯近15年來的首次火星探測行動，而俄在此前的火星探測史上，亦多敗筆。
就近期的航天事故頻發，俄總統梅德韋杰夫及總理普京責令徹查。按計劃，俄聯邦太空總署應於本月26日遞交一份事故調查報告。
http://hk.news.yahoo.com/俄稱火星探測器疑受美干擾-003012470.html
智利北部發生6.1級地震
智利北部發生6.1級地震，據報沒有造成嚴重損毀。地震在當地時間晚上八時半左右發生，在距離聖地牙哥北部450公里的科金博地區，當局說，地震未有造成結構性損毀，亦未有影響基礎設施；但有當地傳媒表示，通訊服務受到影響。
http://hk.news.yahoo.com/智利北部發生6-1級地震-002100308.html
http://hk.news.yahoo.com/智利北部發生6-1級地震-002100308.html
殺手流感醫生：美國審查危害科學 - 荷蘭的實驗室研究出致命禽流感病毒目的是去襲擊美國，因為美國阻止其發表研究所得
America should not be allowed to dominate the debate over who controls sensitive scientific information that could be misused in biowarfare terrorism, say the scientists who created a highly dangerous form of bird-flu virus in a study that has been partially censored by the US government.
Ron Fouchier and Ab Osterhaus of Erasmus Medical Centre in Rotterdam accept recommendations by the US government’s National Science Advisory Board for Biosecurity, which said key details of their US-funded research should not be published because bioterrorists may use the information to cause a bird-flu pandemic.
“But we do question whether it is appropriate to have one country dominate a discussion that has an impact on scientists and public-health officials worldwide,” Fouchier and Osterhaus write in the journal Nature.
“It is not clear whether an international discussion would lead to different recommendations … We don’t know the worldwide opinion until a group of experts from all parts of the globe is formed. An issue this big should not be decided by one country, but all of us,” they say.
As The Independent reported in December, Dr Fouchier and colleagues created a strain of H5N1 bird-flu virus that can be spread by airborne transmission between laboratory ferrets, the standard animal “model” for human influenza. They did it to see how easy it would be for the virus to mutate into a form that could cause a pandemic.
Details of the genetic mutations could prove vital for scientists engaged in the early-warning surveillance of new strains of flu virus, as well as researchers involved in creating new vaccines and anti-viral drugs. But the details could be misused by rogue states or by biowarfare terrorists with access to rudimentary scientific knowledge and fairly standard laboratory equipment. Previously, it was thought the H5N1 bird-flu virus, which appeared in birds in 1996, could only be transmitted to people by close contact with infected poultry, rather than by airborne transmission from one person to another.
If the H5N1 bird-flu strain mutated into an airborne form, it could result in one of the deadliest pandemics in history, where more than half of those infected die – a mortality rate that would dwarf other flu outbreaks.
So far, most of the 600 or so deaths from H5N1 have resulted from close contact between people and poultry and have occurred almost exclusively in Asia and the Middle East where keeping domestic poultry is common. Dr Fouchier and Professor Osterhaus were among experts asked by Nature to give opinions on recommendations of the US National Science Advisory Board for Biosecurity, which wants key details of their study, such as the precise genetic sequence of the mutated virus, to be withheld from publication.
Lynn Klotz of the Centre for Arms Control and Non-Proliferation in Washington and Ed Sylvester of Arizona State University say the chances of a laboratory strain of H5N1 escaping into the wild remain high if it is stored in conventional flu-virus labs. “Regulators should not be sitting idly by, while the threat of a man-made pandemic looms,” the scientists say.
www.independent.co.uk
http://dutchamazingnewsblog.wordpress.com/2012/01/17/killer-flu-doctors-us-censorship-is-a-danger-to-science/
Ron Fouchier and Ab Osterhaus of Erasmus Medical Centre in Rotterdam accept recommendations by the US government’s National Science Advisory Board for Biosecurity, which said key details of their US-funded research should not be published because bioterrorists may use the information to cause a bird-flu pandemic.
“But we do question whether it is appropriate to have one country dominate a discussion that has an impact on scientists and public-health officials worldwide,” Fouchier and Osterhaus write in the journal Nature.
“It is not clear whether an international discussion would lead to different recommendations … We don’t know the worldwide opinion until a group of experts from all parts of the globe is formed. An issue this big should not be decided by one country, but all of us,” they say.
As The Independent reported in December, Dr Fouchier and colleagues created a strain of H5N1 bird-flu virus that can be spread by airborne transmission between laboratory ferrets, the standard animal “model” for human influenza. They did it to see how easy it would be for the virus to mutate into a form that could cause a pandemic.
Details of the genetic mutations could prove vital for scientists engaged in the early-warning surveillance of new strains of flu virus, as well as researchers involved in creating new vaccines and anti-viral drugs. But the details could be misused by rogue states or by biowarfare terrorists with access to rudimentary scientific knowledge and fairly standard laboratory equipment. Previously, it was thought the H5N1 bird-flu virus, which appeared in birds in 1996, could only be transmitted to people by close contact with infected poultry, rather than by airborne transmission from one person to another.
If the H5N1 bird-flu strain mutated into an airborne form, it could result in one of the deadliest pandemics in history, where more than half of those infected die – a mortality rate that would dwarf other flu outbreaks.
So far, most of the 600 or so deaths from H5N1 have resulted from close contact between people and poultry and have occurred almost exclusively in Asia and the Middle East where keeping domestic poultry is common. Dr Fouchier and Professor Osterhaus were among experts asked by Nature to give opinions on recommendations of the US National Science Advisory Board for Biosecurity, which wants key details of their study, such as the precise genetic sequence of the mutated virus, to be withheld from publication.
Lynn Klotz of the Centre for Arms Control and Non-Proliferation in Washington and Ed Sylvester of Arizona State University say the chances of a laboratory strain of H5N1 escaping into the wild remain high if it is stored in conventional flu-virus labs. “Regulators should not be sitting idly by, while the threat of a man-made pandemic looms,” the scientists say.
www.independent.co.uk
http://dutchamazingnewsblog.wordpress.com/2012/01/17/killer-flu-doctors-us-censorship-is-a-danger-to-science/
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