Sterile Cholesterol Solution
Sterile Cholesterol Solution - Related Videos
11:07
Macrophage Cholesterol Depletion and Its Effect on the Phagocytosis of Cryptococcus neoformans
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Cited by 22 •
2014
In this article, a protocol for infection of macrophages with Cryptococcus neoformans is described. Also, a method for sterol depletion from the macrophages is explained. These protocols provide a guide to study fungal infections in vitro and examine the role of sterols in such infections.
01:29
Cholesterol: Significance and Regulation
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2024
Although not a source of energy, cholesterol plays a significant role as a foundational structure for bile salts, steroid hormones, and vitamin D, as well as being a crucial component of plasma membranes. Approximately 15% of blood cholesterol is derived from our diet, with the remainder synthesized from acetyl CoA by the liver and intestines. Cholesterol is eliminated from the body through its conversion into bile salts, which are eventually discarded in the feces. Considering cholesterol and...
12:29
Sterile Tissue Harvest
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2016
Source: Kay Stewart, RVT, RLATG, CMAR; Valerie A. Schroeder, RVT, RLATG. University of Notre Dame, IN In 1959 The 3 R's were introduced by W.M.S. Russell and R.L. Burch in their book The Principles of Humane Experimental Technique. The 3 R's are replacement, reduction, and refinement of the use of animals in research. The use of cell lines and tissue cultures that originated from research animals is a replacement technique, as it allows for many experiments to be conducted in vitro. Harvesting...
07:54
Cholesterol Efflux Assay
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Cited by 74 •
2012
The cholesterol assay is designed to quantitate the rate of cholesterol efflux from cultured cells and the capacity of plasma acceptors to accept cholesterol released from cells. The assay consists of labelling cells with cholesterol, equilibration of cholesterol among intracellular pools and release of cholesterol to an extracellular acceptor.
01:30
Cleaning, Sterilization, and Disinfection
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2023
Cleaning, disinfection, and sterilization are the methods that help to break the infection chain and prevent disease. Cleaning The cleaning process usually involves using water with detergents or enzymatic cleaner and removing foreign material from objects and surfaces, including organic material such as body fluids or inorganic material like soil. Cleaning is performed before high-level disinfection and sterilization because foreign materials on the cover of the devices interfere with process...
FAQs
Cholesterol positions within the lipid bilayer and changes how neighboring lipids are arranged. This affects membrane organization as well as the balance between fluidity and permeability. Those physical changes can influence how a cell maintains its membrane and how membrane-associated proteins function, making cholesterol supplementation useful when researchers need to examine lipid-dependent cellular behavior.
Changes in membrane fluidity can alter the movement and organization of molecules within the bilayer, while changes in permeability affect how readily substances cross the membrane. Because cholesterol influences both properties, varying its availability can help researchers investigate how membrane composition contributes to cellular maintenance, transport, and other biological responses in controlled experimental systems.
Membrane-associated proteins operate within or alongside the lipid bilayer, so changes in bilayer organization can influence their activity. Supplementing a biological system with cholesterol allows researchers to examine whether a protein-dependent response changes when membrane lipid conditions are altered. This is particularly relevant to experiments focused on cholesterol-dependent signaling or transport.
Cells use cholesterol not only as a membrane component but also as a precursor for steroid hormones and bile acids. Consequently, cholesterol supplementation may affect experiments that examine lipid metabolism as well as membrane behavior. Considering these metabolic roles helps researchers distinguish effects associated with membrane organization from those linked to cholesterol utilization by cells.
The solution can be added to defined media or other controlled biological systems when a consistent source of cholesterol is required. This approach supports deliberate lipid supplementation while limiting variation in the experimental setup. Its use is relevant when researchers want to maintain cellular membranes, investigate lipid metabolism, or examine responses associated with cholesterol-dependent signaling and transport.
Cholesterol supplementation can support studies of membrane maintenance, lipid metabolism, signaling, and transport. Researchers may compare biological responses under systems with different cholesterol conditions to determine whether an observed outcome depends on membrane lipid composition or cholesterol use. The resulting comparisons can help connect cellular behavior with membrane and metabolic mechanisms.
Sterility reduces the risk that microorganisms will be introduced alongside the lipid supplement. Unwanted contamination can compromise cell-based experiments and make biological changes difficult to attribute to cholesterol conditions. Using a sterile preparation therefore helps preserve experimental integrity, particularly when researchers need consistent results across defined media or controlled biological workflows.