尿液并非是无菌的
文章来源:未知 文章作者:enread 发布时间:2014-05-19 06:01 字体: [ ]  进入论坛
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Bacteria live in the bladders of healthy women, discrediting1 the common belief that normal urine is sterile2(无菌的). This finding was presented today by researchers from Loyola University Chicago at the 114th General Meeting of the American Society for Microbiology in Boston. "Doctors have been trained to believe that urine is germ-free," said Linda Brubaker, MD, MS, co-investigator3 and dean, Loyola University Chicago Stritch School of Medicine (SSOM). "These findings challenge this notion, so this research opens the door to exciting new possibilities for patient treatment."
 
This study also revealed that bladder bacteria in healthy women differ from the bladder bacteria in women affected4 by overactive bladder (OAB), which causes a sudden need to urinate(小便).
 
"The presence of certain bacteria in women with overactive bladder may contribute to OAB symptoms," said Evann Hilt, lead investigator and second-year master's student, Loyola University Chicago. "Further research is needed to determine if these bacterial5 differences are clinically relevant for the millions of women with OAB and the doctors who treat them."
 
Approximately 15 percent of women suffer from OAB and yet an estimated 40 -- 50 percent do not respond to conventional treatments. One possible explanation for the lack of response to medication may be the bacteria present in these women.
 
"If we can determine that certain bacteria cause OAB symptoms, we may be able to better identify those at risk for this condition and more effectively treat them," said Alan Wolfe, PhD, co-investigator and professor of Microbiology and Immunology, SSOM.
 
This study evaluated urine specimens6 of 90 women with and without OAB symptoms. Urine samples were collected through a catheter(导尿管) and analyzed7 using an expanded quantitative8 urine culture (EQUC) technique. This EQUC technique was able to find bacteria that are not identified by the standard urine culture techniques typically used to diagnose urinary tract9 syndromes10.
 
"While traditional urine cultures have been the gold standard to identify urine disorders11 in the past, they do not detect most bacteria and have limited utility as a result," said Paul Schreckenberger, PhD, director, clinical microbiology laboratory, Loyola University Health System. "They are not as comprehensive as the EQUC protocol12 used in this study."
 
Loyola researchers now plan to determine which bacteria in the bladder are helpful and which are harmful. They also will look at how these bacteria interact with each other and with their host, and how we can use this information to help patients. This research is in line with a larger international effort that is underway to identify the core bacterial composition of a healthy human body. The goal is to correlate changes in the composition of bacterial communities in and on the body with certain diseases.


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1 discrediting 4124496afe2567b0350dddf4bfed5d5d     
使不相信( discredit的现在分词 ); 使怀疑; 败坏…的名声; 拒绝相信
参考例句:
  • It has also led to the discrediting of mainstream macroeconomics. 它还使得人们对主流宏观经济学产生了怀疑。
2 sterile orNyQ     
adj.不毛的,不孕的,无菌的,枯燥的,贫瘠的
参考例句:
  • This top fits over the bottle and keeps the teat sterile.这个盖子严实地盖在奶瓶上,保持奶嘴无菌。
  • The farmers turned the sterile land into high fields.农民们把不毛之地变成了高产田。
3 investigator zRQzo     
n.研究者,调查者,审查者
参考例句:
  • He was a special investigator for the FBI.他是联邦调查局的特别调查员。
  • The investigator was able to deduce the crime and find the criminal.调查者能够推出犯罪过程并锁定罪犯。
4 affected TzUzg0     
adj.不自然的,假装的
参考例句:
  • She showed an affected interest in our subject.她假装对我们的课题感到兴趣。
  • His manners are affected.他的态度不自然。
5 bacterial dy5z8q     
a.细菌的
参考例句:
  • Bacterial reproduction is accelerated in weightless space. 在失重的空间,细菌繁殖加快了。
  • Brain lesions can be caused by bacterial infections. 大脑损伤可能由细菌感染引起。
6 specimens 91fc365099a256001af897127174fcce     
n.样品( specimen的名词复数 );范例;(化验的)抽样;某种类型的人
参考例句:
  • Astronauts have brought back specimens of rock from the moon. 宇航员从月球带回了岩石标本。
  • The traveler brought back some specimens of the rocks from the mountains. 那位旅行者从山上带回了一些岩石标本。 来自《简明英汉词典》
7 analyzed 483f1acae53789fbee273a644fdcda80     
v.分析( analyze的过去式和过去分词 );分解;解释;对…进行心理分析
参考例句:
  • The doctors analyzed the blood sample for anemia. 医生们分析了贫血的血样。 来自《简明英汉词典》
  • The young man did not analyze the process of his captivation and enrapturement, for love to him was a mystery and could not be analyzed. 这年轻人没有分析自己蛊惑著迷的过程,因为对他来说,爱是个不可分析的迷。 来自《简明英汉词典》
8 quantitative TCpyg     
adj.数量的,定量的
参考例句:
  • He said it was only a quantitative difference.他说这仅仅是数量上的差别。
  • We need to do some quantitative analysis of the drugs.我们对药物要进行定量分析。
9 tract iJxz4     
n.传单,小册子,大片(土地或森林)
参考例句:
  • He owns a large tract of forest.他拥有一大片森林。
  • He wrote a tract on this subject.他曾对此写了一篇短文。
10 syndromes 300fdb3af54a410e55b4108acba05633     
n.综合征( syndrome的名词复数 );(某种条件下有共同特征的)一系列表现(事件、举动等)
参考例句:
  • Other agents can cause similar syndromes. 其它病原也可引起相似的综合症。 来自辞典例句
  • They have pointed out the similarities of the sprue syndromes in man and TGE. 他们强调了人的鹅口疮综合症和TGE的共同点。 来自辞典例句
11 disorders 6e49dcafe3638183c823d3aa5b12b010     
n.混乱( disorder的名词复数 );凌乱;骚乱;(身心、机能)失调
参考例句:
  • Reports of anorexia and other eating disorders are on the increase. 据报告,厌食症和其他饮食方面的功能紊乱发生率正在不断增长。 来自《简明英汉词典》
  • The announcement led to violent civil disorders. 这项宣布引起剧烈的骚乱。 来自《简明英汉词典》
12 protocol nRQxG     
n.议定书,草约,会谈记录,外交礼节
参考例句:
  • We must observe the correct protocol.我们必须遵守应有的礼仪。
  • The statesmen signed a protocol.那些政治家签了议定书。
TAG标签: bacteria urine bladder
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