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blood clotting
blood clotting
blood clotting A response to the injury of a blood vessel in which the escape of liquid blood is prevented by its conversion into a solid mass, or clot, composed of fibres of
fibrin in which blood cells are enmeshed. In vertebrates, a soluble protein,
fibrinogen, found in the
blood plasma is acted upon by the enzyme
thrombin. As a result, a negatively charged
peptide is split off from the fibrinogen molecule, leaving monomeric fibrin; this is capable of rapid polymerization to produce the tangle of insoluble threads that forms a clot. Active thrombin is formed from inactive prothrombin, also found in blood plasma, by a very complex process involving a lipoprotein factor liberated by rupturing blood platelets, a protein plasma thromboplastin component (PTC), antihaemophilic globulin (AHG), calcium ions, etc. Removal of free calcium from the blood, e.g. by adding citrate or oxalate, inhibits the formation of thrombin.
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Monash researchers lead the way in blood clotting discovery.
Newspaper article from: NewsRx Science; 6/14/2009; 700+ words
; ...between disturbed blood flow and blood clotting. ACBD research director Professor...between disturbed blood flow and blood clotting was identified more than 150 years...and stroke." Dr Nesbitt said. Blood clotting diseases are Australia's major...
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Publication No. WO/2009/135785 Published on Nov. 12, German Inventor Develops Blood Clotting Diagnostic Apparatus, Method
News Wire article from: US Fed News Service, Including US State News; 11/13/2009; 524 words
; ...developed an apparatus and method for blood clotting diagnostics. According to an...order to be able to determine the blood clotting activity of a patient in an even...extracorporeal determination of the blood clotting activity of an individual's...
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Strep disrupts blood clotting to infect humans.
Newspaper article from: Blood Weekly; 9/16/2004; 700+ words
; ...that uses a mimic of a human blood-clotting enzyme to advance its infection...called streptokinase to block the blood clotting response and allow themselves...streptokinase enzyme bypasses this blood-clotting system by causing the blood clot...
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Stop that clot: proteins uncovered. (blood clotting)
Magazine article from: Science News; 1/26/1985; ; 700+ words
; ...reactions that result in blood clotting are slowly revealing...events called the clotting cascade that is set off when a blood vessel wall breaks...then shuts off clotting by interfering with...Since without the blood vessel-linked thrombomodulin...
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 "Albany Times Union (Albany, NY)")
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Troops shorted on blood-clotting supplies; Soldiers say they had to spend their own money to get lifesaving bandages for wounded.(Main)
Newspaper article from: Albany Times Union (Albany, NY); 6/11/2006; 700+ words
; ...had to scrounge for lifesaving blood-clotting supplies despite the Army's...said they have bought their own blood-clotting bandages and granule packets...who spent a year in Iraq. Blood-clotting agents slow arterial bleeding...
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PLANT COMPOUNDS INHIBIT BLOOD CLOTTING
News Wire article from: US Fed News Service, Including US State News; 1/2/2006; 700+ words
; ...vessel walls. Platelets play an important role in blood clotting. They release chemicals that cause the cascade...Plaque buildup can obstruct arteries and lead to blood clotting. "Blood clotting causes the artery to narrow even more...
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PVC blend improves blood-clotting options.(Teknor Apex Co. and Vestolit GmbH und Co. developing PVC blend)
Magazine article from: Plastics News; 3/3/2003; 700+ words
; ...PVC blend that will have anti-blood-clotting properties built into the polymer...have large amounts of anti-clotting agents dumped into the blood, which creates the risk of turning...resin from Vestolit that prevents blood clotting.
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Control of blood clotting by platelets described; provides medical promise.
Newspaper article from: NewsRx Health & Science; 12/13/2009; 700+ words
; ...platelets are essential to promote blood clotting. Virginia Tech faculty members...surface of platelets that control blood clotting. The Virginia Tech researchers...this is the case, Dab2 inhibits blood clotting. Experimentation and measurements...
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Redesigned protein accelerates blood clotting.
Newspaper article from: Heart Disease Weekly; 1/11/2009; 700+ words
; ...increasing its ability to drive blood clotting, according to a study published...Effective Without Drawing Notice Blood clotting involves more than a dozen proteins...cascade of chemical reactions inside blood vessels following injury, with...
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Plant compounds inhibit blood clotting.
Magazine article from: Agricultural Research; 1/1/2006; ; 700+ words
; ...vessel walls. Platelets play an important role in blood clotting. They release chemicals that cause the cascade...Plaque buildup can obstruct arteries and lead to blood clotting. "Blood clotting causes the artery to narrow even more...
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Blood Clotting
Book article from: Biology
Blood Clotting Blood clotting (coagulation) is the process by which blood vessels repair ruptures after injury. Injury repair actually begins even before clotting does, through vascular spasm, or muscular contraction of the vessel walls, which...
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blood clotting
Book article from: The Columbia Encyclopedia, Sixth Edition
blood clotting process by which the blood coagulates...network of fibrils to form the clot. Blood clotting can be initiated by the extrinsic...in blood have been found to affect clotting; whether or not blood will coagulate depends on a balance...
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Genetically Engineered Blood-Clotting Factor
Book article from: Medical Discoveries
Genetically engineered blood-clotting factor Factor VIII Excessive, uncontrolled...factor VIII, which is required for blood to clot normally. Although purified factor VIII extracted from human blood became available around 1960, it has...
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Clotting
Encyclopedia entry from: Complete Human Diseases and Conditions
Clotting Clotting is the process that changes blood in the body from a free...different proteins in the blood come together in the clotting process. The proteins...of the most important clotting factors found in the blood. * hemophilia (hee...
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clotting factors
Book article from: A Dictionary of Biology
clotting factors ( coagulation factors ) A group of substances present in blood plasma that, under certain circumstances...reactions leading to the conversion of blood from a liquid to a solid state (see blood clotting ). Although they have specific...
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