Insulin Action Assessment
Insulin Action Assessment - Related Videos
05:52
Insulin Injection and Hemolymph Extraction to Measure Insulin Sensitivity in Adult Drosophila melanogaster
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Cited by 16 •
2011
Conserved insulin signaling pathways found in the fruit fly Drosophila melanogaster make this organism a potential tool for modeling metabolic disorders including type II diabetes. To this end, it is critical to establish physiological assays to effectively measure systemic insulin action in peripheral glucose disposal in the adult fly.
07:30
Assessing Insulin Clearance in Mice via In Situ Liver Perfusion
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2024
Hepatic insulin clearance is critical for regulating glucose homeostasis. This article describes a user-friendly hepatic perfusion procedure for directly evaluating the hepatic insulin clearance rate in situ in mice.
12:33
Corticospinal Excitability Modulation During Action Observation
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Cited by 22 •
2013
Single-pulse transcranial magnetic stimulation over the primary motor cortex, neuronavigation, and registration of electromyographic activity of hand muscles were used in this study to explore corticospinal excitability while participants were observing action sequences.
12:08
Improving IV Insulin Administration in a Community Hospital
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Cited by 7 •
2012
When compared to the previous paper protocol, implementation of a computerized glucose management system results in a substantial increase in blood glucose concentration measurements within the target range. Using a computerized glucose management system to monitor blood glucose levels, decreases in severe hypoglycemia (<40 mg/dL), clinical hypoglycemia (<70 mg/dL), and hyperglycemia (>180 mg/dL) also can be observed.
14:35
Using TMS to Measure Motor Excitability During Action Observation
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2023
Source: Laboratories of Jonas T. Kaplan and Sarah I. Gimbel—University of Southern California Transcranial Magnetic Stimulation (TMS) is a non-invasive brain stimulation technique that involves passing current through an insulated coil placed against the scalp. A brief magnetic field is created by current in the coil, and because of the physical process of induction, this leads to a current in the nearby neural tissue. Depending on the duration, frequency, and magnitude of these magnetic...
FAQs
During a euglycemic-hyperinsulinemic clamp, insulin infusion maintains a controlled insulin level while blood glucose is kept at a controlled concentration. The amount of glucose required to maintain that condition reflects glucose disposal during insulin stimulation. Lower glucose disposal indicates reduced insulin sensitivity, making the clamp useful for detailed metabolic phenotyping and intervention research.
Insulin-mediated suppression of hepatic glucose production provides a metabolic readout distinct from glucose disposal. If insulin fails to suppress hepatic glucose production adequately, that pattern indicates diminished insulin sensitivity. Assessing both hepatic glucose production and glucose disposal therefore helps describe impaired metabolic control more completely than evaluating a single blood glucose concentration.
These approaches answer related but different questions. An oral glucose tolerance test examines glucose and insulin concentrations after a glucose challenge, whereas the euglycemic-hyperinsulinemic clamp evaluates glucose disposal while an insulin infusion maintains a controlled level. Calculated surrogate indices provide an additional approach for supporting diagnosis, phenotyping, and treatment research.
The core measurements are blood glucose and insulin concentrations, interpreted in relation to the testing condition. After an oral glucose challenge, their pattern is assessed in response to that challenge. During controlled insulin infusion, glucose concentrations and disposal are evaluated under maintained conditions. These measurements connect circulating signals with overall metabolic control.
In medicine, these assessments help identify impaired metabolic control and characterize insulin resistance in diabetes and related metabolic disorders. They also support phenotyping, meaning the description of metabolic features within a disease or participant group. In treatment research, the same approaches help evaluate whether an intervention changes insulin sensitivity or glucose regulation.
Calculated surrogate indices convert available glucose and insulin measurements into summary measures of insulin action. They can support diagnosis, metabolic phenotyping, and treatment research alongside challenge-based or infusion-based testing. Their practical value is that they organize concentration data into a form that helps characterize insulin sensitivity and impaired metabolic control across clinical or research assessments.