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Related Concept Videos

Immunoprecipitation01:20

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Immunoprecipitation, or IP, is a widely used technique that employs protein-antibody interactions to isolate proteins or protein complexes in their native state for studying protein-protein interactions, quaternary structures, or supramolecular complexes. Various modifications of the technique, including chromatin IP, cross-linking IP, and fluorescence IP, are commonly used.
Chromatin Immunoprecipitation
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Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
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Precipitation and Co-precipitation01:17

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Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
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Isolation and Cryopreservation of Highly Viable Human Peripheral Blood Mononuclear Cells From Whole Blood: A Guide for Beginners
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Cryoprecipitate therapy.

B Nascimento1, L T Goodnough2, J H Levy3

  • 1Department of Surgery, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Canada.

British Journal of Anaesthesia
|June 29, 2014
PubMed
Summary
This summary is machine-generated.

Cryoprecipitate is now used to treat acquired coagulopathy, but its safety and efficacy are uncertain. Further research is needed to establish evidence-based guidelines for its use in fibrinogen replacement therapy.

Keywords:
bloodblood coagulation factorscoagulation protein disorderscryoprecipitate coagulumfibrinogentransfusion

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Co-immunoprecipitation Assay Using Endogenous Nuclear Proteins from Cells Cultured Under Hypoxic Conditions
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Area of Science:

  • Transfusion Medicine
  • Hematology

Background:

  • Cryoprecipitate, initially for hemophilia A, is now primarily used for acquired hypofibrinogenemia in bleeding patients.
  • It's a pooled product lacking pathogen inactivation, posing risks like pathogen transmission and transfusion-related acute lung injury.
  • Concerns and alternatives have led to its withdrawal in some European countries.

Purpose of the Study:

  • To review the current use, safety, and efficacy of cryoprecipitate.
  • To highlight the lack of evidence for current dosing recommendations.
  • To emphasize the need for randomized controlled trials comparing cryoprecipitate with alternatives.

Main Methods:

  • Literature review and analysis of current clinical practice and guidelines.
  • Discussion of safety concerns associated with cryoprecipitate transfusion.
  • Identification of knowledge gaps regarding optimal use and efficacy.

Main Results:

  • Cryoprecipitate is widely used for fibrinogen replenishment in acquired coagulopathies (e.g., cardiac surgery, trauma, liver transplantation, obstetric hemorrhage).
  • Established treatment thresholds (e.g., fibrinogen < 1 g/L) lack robust clinical evidence.
  • Significant safety concerns include pathogen transmission and transfusion-related acute lung injury.

Conclusions:

  • Current use of cryoprecipitate is largely empirical, with uncertainty regarding optimal dosing and administration.
  • Randomized controlled trials are essential to determine its clinical efficacy versus alternative fibrinogen preparations.
  • Evidence-based guidelines are needed to inform clinical practice and ensure patient safety.