cascade


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cascade

 [kas-kād´]
a series of steps or stages (as of a physiological process) that, once initiated, continues to the final step because each step is triggered by the preceding one, resulting in amplification of the signal, information, or effect at each stage. In electronics, the term is applied to multiple amplifiers. Examples in biochemistry include blood coagulation and the complement system.
coagulation cascade the series of steps beginning with activation of the intrinsic or extrinsic pathways of coagulation, or of one of the related alternative pathways, and proceeding through the common pathway of coagulation to the formation of the fibrin clot.
The coagulation cascade. This scheme emphasizes the understanding of 1, the importance of the tissue factor pathway in initiating clotting in vivo; 2, the interactions between pathways; and 3, the pivotal role of thrombin in sustaining the cascade by feedback activation of coagulation factors. HMWK = high-molecular-weight kininogen; PK = prekallikrein; PL = phospholipid; PT = prothrombin; TF = tissue factor; Th = thrombin. From Schafer, 1994.

cas·cade

(kas-kād'),
1. A series of sequential interactions, as of a physiologic process, which after being initiated continues to the final one; each interaction is activated by the preceding one, sometimes with cumulative effect.
2. To spill over, especially rapidly.
[Fr., fr. It. cascare, to fall]

cascade

/cas·cade/ (kas-kād´) a series that once initiated continues to the end, each step being triggered by the preceding one, sometimes with cumulative effect.
coagulation cascade  the series of steps beginning with activation of the intrinsic or extrinsic pathways of coagulation, or of one of the related alternative pathways, and proceeding through the common pathway of coagulation to the formation of the fibrin clot.

cascade

(kăs-kād′)
n.
a. A succession of stages, processes, operations, or units.
b. Electronics A series of components or networks, the output of each of which serves as the input for the next.
c. A chemical or physiological process that occurs in successive stages, each of which is dependent on the preceding one, and often producing a cumulative effect: an enzymatic cascade.

cascade

[kaskād′]
Etymology: L, cadere, to fall
any process that develops in stages, with each stage dependent on the preceding one, often producing a cumulative effect.
Cardiac Arrest in Seattle: Conventional vs. Amiodarone Drug Evaluation. A trial comparing conventional therapy vs. amiodarone, an antiarrhythmic on M&M in survivors of refractory out-of-hospital ventricular arrhythmias
Conclusion Slight increase in survival free of cardiac death; resuscitated ventricular fibrillation or defibrillator shock was better with amiodarone at 2, 4, and 6 years of followup; overall mortality is high, side effects are common

cascade

Physiology A molecular system capable of self-propagation or amplification, especially of a weak signal; once a cascade is initiated, it may continue to be amplified through positive feedback loops and pathways, until down-regulated by local mechanisms–eg, by proteolytic enzymes. See Complement cascade, Ischemic cascade, Metastatic cascade.

CASCADE

Cardiology A clinical trial–Cardiac Arrest in Seattle: Conventional vs Amiodarone Drug Evaluation–that compared conventional therapy vs amiodarone, an antiarrhythmic on M&M in survivors of refractory out-of-hospital ventricular arrhythmias. See Amiodarone, Ventricular arrhythmia. Cf BASIS.

cas·cade

(kas-kād')
1. A series of sequential interactions, as of a physiologic process, which after being initiated continues to the final one; each interaction is activated by the preceding one, sometimes with cumulative effect.
2. To spill over, especially rapidly.
[Fr., fr. It. cascare, to fall]

cascade

A physiological system in which the completion of one event has an outcome that initiates the next successive event. Blood coagulation, for instance, is a cascade involving more than a dozen successive events. In genetics a cascade system controls the order in which genes are expressed.

cascade

sequential ENZYME reactions in which one activated enzyme activates the next in the sequence, which in turn amplifies the initial response, as in the COMPLEMENT system and BLOOD CLOTTING.

cascade

a series of steps or stages (as of a physiological process) which, once initiated, continues to the final step by virtue of each step being triggered by the preceding one, sometimes with cumulative effect. For example, the coagulation cascade.
References in periodicals archive ?
Subsequently, the profiles are run through a three or four tank cleaning and cooling cascade and exit the system absolutely salt free, dry and at the required temperature.
Although the plant is owned by Centra Gas, Boise Cascade employees operate and maintain the plant.
When a knockout occurs, another of the iodine's electrons will cascade down from a higher orbital to fill the hole.
We have also revised our schedule, reflecting the previously announced delay in beginning Lead Cascade operations that allowed for additional testing and demonstration of the individual machines.
Matsuyama became Vice President and General Counsel of Cascade in 1987 and has been President and a Director of the Corporation since 1988.
Prior to joining Prince Albert in 1990, O'Brien was president of Boise Cascade Canada.
Additionally, Cascade expects to report fourth quarter and year-end 2006 results after the close of the market on Tuesday, January 23, 2007.
MINNEAPOLIS, June 16 /PRNewswire/ -- Cascade Medical, Inc.
Cascade is the world's largest manufacturer of materials handling attachments and tools for lift trucks with sales of approximately $450 million and facilities in North America, Europe and Asia.
June 8 /PRNewswire/ -- Cascade Design Automation today introduced Epoch, its newest integrated circuit (IC) design tool, at the Design Automation Conference here, the company announced.
In addition to approval by the Cascade shareholders, the completion of the merger is subject to the approval of various regulatory authorities.
MINNEAPOLIS, March 23 /PRNewswire/ -- Cascade Medical, Inc.