吉林治疗阳痿早泄哪些方法好吉林到哪个做包皮手术的医院,吉林治阴茎短小病最好的医院,吉林包皮过长要多少费用,吉林治包皮长价格,吉林医院做包皮大概要多少钱,吉林一次割包皮过长要多少钱,吉林去哪里看男科

WASHINGTON, Nov. 24 (Xinhua) -- An inexpensive drug that treats Type 2 diabetes has been shown to prevent a number of natural and man-made chemicals from stimulating the growth of breast cancer cells, according to a newly published study by a Michigan State University researcher. The research, led by pediatrics professor James Trosko and colleagues from South Korea's Seoul National University, provides biological evidence for previously reported epidemiological surveys that long-term use of the drug metformin for Type 2 diabetes reduces the risk of diabetes-associated cancers, such as breast cancers.The research appeared online this week in PLoS One.For the study, Trosko and colleagues focused on the concept that cancers originate from adult human stem cells and that there are many natural and man-made chemicals that enhance the growth of breast cancer cells. Using culture dishes, they grew miniature human breast tumors, or mammospheres, that activated a certain stem cell gene. Then the mammospheres were exposed to natural estrogen -- a known growth factor and potential breast tumor promoter -- and man-made chemicals that are known to promote tumors or disrupt the endocrine system.The team found that estrogen and the chemicals caused the mammospheres to increase in numbers and size. However, with metformin added, the numbers and size of the mammospheres were dramatically reduced. While each of the chemicals enhanced growth by different means, metformin seemed to be able to inhibit their stimulated growth in all cases."While future studies are needed to understand the exact mechanism by which metformin works to reduce the growth of breast cancers, this study reveals the need to determine if the drug might be used as a preventive drug and for individuals who have no indication of any existing cancers," Trosko said.

MOSCOW, Nov. 25 (Xinhua) -- Russia's Proton-M carrier rocket was launched on Friday from the Baikonur space center in Kazakhstan with a Chinese communications satellite "AsiaSat-7", according to Russia's Federal Space Agency Roscosmos.Roscosmos' live broadcast on its official website showed that the Proton-M rocket atop the Briz-M upper stage was launched at 23: 10 Moscow time (1910 GMT). The separation of the satellite from the rocket was scheduled for 08:23 Moscow time (0423 GMT) on Saturday.The AsiaSat-7 which belongs to the Asia Satellite Telecommunications Company Limited (AsiaSat) located in Hong Kong, China, is a new generation satellite designed to replace AsiaSat 3S at the orbital location of 105.5 degrees East.The new satellite was expected to support a broad range of applications for the Asia-Pacific region, including television broadcast and VSAT (Very Small Aperture Terminal) networks.

SAN FRANCISCO, Nov. 3 (Xinhua) -- Hewlett-Packard Co. (HP) on Thursday introduced its Slate 2 Tablet PC, a business-targeted tablet computer running Windows operating system.Looking like the previous version, Slate 2, featuring an 8.9- inch screen, is upgraded with Intel Atom Z670 processor to deliver faster boot times and improved battery life up to six hours, said HP.It also has a Bluetooth keyboard dock and Swype keyboard which allows users to enter words by sliding a finger or stylus from letter to letter, lifting only between words.The device will be available to customers worldwide for 699 U.S. dollars later this month, according to HP.Slate 500, Slate 2's previous generation running Windows, was introduced last October and sold exclusively to businesses for 800 dollars upon launch.HP said in a statement that the Slate 2 tablet provides instant deployment for business and vertical markets such as education, healthcare, government and retail, where jobs frequently take users away from a traditional desk.The company on Thursday also announced HP 3115m, a new notebook PC targeting business, education and government customers. The notebook will be available in the Americas only next Friday with prices staring at 429 dollars.HP's consumer-oriented tablet TouchPad was killed off in August before former chief executive officer Leo Apotheker resigned. A dropped price from 499 to 99.99 dollars has made the unpopular device sold out in stores across the U.S. and Canada in days.Last Thursday, HP announced it will keep its PC business, saying it will build tablets running Microsoft's upcoming Windows 8 system in 2012.

WASHINGTON, Dec. 22 (Xinhua) -- The journal Science on Thursday chose the HPTN 052 clinical trial, an international HIV prevention trial as the 2011 Breakthrough of the Year.The study found that if HIV-infected heterosexual individuals begin taking anti-retroviral medicines when their immune systems are relatively healthy as opposed to delaying therapy until the disease has advanced, they are 96 percent less likely to transmit the virus to their uninfected partners. Findings from the trial, first announced in May, were published in the New England Journal of Medicine in August.The study was funded by the U.S. National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health."The HPTN 052 study convincingly demonstrated that anti- retroviral medications can not only treat but also prevent the transmission of HIV infection among heterosexual individuals," said NIAID Director Anthony Fauci in a statement. "We are pleased that Science recognized the extraordinary public health significance of these study results."Science's list of nine other ground-breaking scientific achievements from 2011 include:The Hayabusa Mission: After some near-disastrous technical difficulties and a stunningly successful recovery, Japan's Hayabusa spacecraft returned to Earth with dust from the surface of a large, S-type asteroid. This asteroid dust represented the first direct sampling of a planetary body in 35 years, and analysis of the grains confirmed that the most common meteorites found on Earth, known as ordinary chondrules, are born from these much larger, S-type asteroids.Unraveling Human Origins: Studying the genetic code of both ancient and modern human beings, researchers discovered that many humans still carry DNA variants inherited from archaic humans, such as the mysterious Denisovans in Asia and still-unidentified ancestors in Africa. One study this year revealed how archaic humans likely shaped our modern immune systems, and an analysis of Australopithecus sediba fossils in South Africa showed that the ancient hominin possessed both primitive and Homo-like traits.Capturing a Photosynthetic Protein: In vivid detail, researchers in Japan have mapped the structure of the Photosystem II, or PSII, protein that plants use to split water into hydrogen and oxygen atoms. The crystal-clear image shows off the protein's catalytic core and reveals the specific orientation of atoms within. Now, scientists have access to this catalytic structure that is essential for life on Earth -- one that may also hold the key to a powerful source of clean energy.Pristine Gas in Space: Astronomers using the Keck telescope in Hawaii to probe the faraway universe wound up discovering two clouds of hydrogen gas that seem to have maintained their original chemistry for two billion years after the big bang. Other researchers identified a star that is almost completely devoid of metals, just as the universe's earliest stars must have been, but that formed much later. The discoveries show that pockets of matter persisted unscathed amid eons of cosmic violence.

UNITED NATIONS, Jan. 19 (Xinhua) -- China's Permanent Representative to the UN Li Baodong said here Thursday that caution should be called for in metering out sanctions in international affairs.Li made the remarks when addressing a Security Council open debate on the question of justice and rule of law."We are in favor of improving the UN sanction regime on the basis of extensive consultations so as to improve its credibility, procedures and establishing effective monitoring mechanisms and to establish strict criteria, define timelines, " Li said."Sanctions should be only carried out on basis of facts and evidence. Double standards must be avoided. Impacts against civilian lives and social economic development must be minimized," the ambassador said.Stressing that the UN chart and the fundamental principles of international law as established in it should be upheld, Li said rule of law in international relations should be strengthened.The Charter as well as principles of international law established in it constitute the call of rule of law in international relations and represents the bedrock for developing rule of law in international relations, he said."In the conduct of international relations and international affairs, adherence to the Charter and other fundamental principles of international law, such as respect for national sovereignty, non-interference in internal affairs, fulfillment in international obligation in real earnest is the essence of promotion of international rule of law," said Li.According to the Charter, UN Security Council resolutions constitute the integral part of international rule of law. Promotion of international rule of law requires strict implementation of the Security Council resolutions by member states, he added.