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A sensitive, inexpensive method for determining minute quantities of lipase activity
J Huang1, P S Roheim, C H Sloop
1Louisiana State University Medical Center, Department of Physiology, New Orleans 70112-2822.
Analytical Biochemistry
|June 1, 1989
Summary
A novel lipase assay uses 63Ni binding to fatty acids for sensitive detection. This method accurately measures low lipase concentrations, even with radiolabeled fatty acids.
Area of Science:
- Biochemistry
- Analytical Chemistry
Background:
- Lipase activity is crucial in lipid metabolism.
- Accurate measurement of lipase concentrations is vital for research and diagnostics.
- Existing assays may have limitations in sensitivity or interference.
Purpose of the Study:
- To develop a sensitive and reproducible lipase assay.
- To enable measurement of low lipase concentrations.
- To overcome interference from radiolabeled substrates.
Main Methods:
- Assay development based on 63Ni binding to fatty acids.
- Adaptation for measuring lipoprotein lipase and hepatic triacylglycerol lipase.
- Testing with tritiated triolein to assess radiolabel interference.
Main Results:
- The assay detects down to 1 nmol of fatty acid per milliliter.
- Successfully adapted for measuring low concentrations of key lipases.
- Demonstrated insensitivity to radiolabel interference, even with labeled fatty acids.
Conclusions:
- A sensitive and reproducible lipase assay has been established.
- The method is suitable for quantifying low levels of important lipases.
- This assay offers a robust solution for lipase activity measurement.