Related Experiment Videos
Effects of carrier solution on insulin bioavailability.
Zdenek Rusavý1, Vladimir Sramek, Renata Suchat
1Department of Medicine I, University Hospital Plzen, Plzen, Czech Republic. rusavy@fnplzen.cz
JPEN. Journal of Parenteral and Enteral Nutrition
|December 1, 2004
Summary
Insulin bioavailability is significantly higher in total nutrient admixture compared to saline. Insulin levels remain stable in nutrient solutions, unlike saline where they decrease over time, highlighting the impact of base solutions on insulin stability.
Area of Science:
- Endocrinology
- Pharmacokinetics
- Biochemistry
Background:
- Assessing the impact of base solutions on biologic insulin availability.
- Monitoring total insulin concentration changes over time using radioimmunoassay (RIA).
Purpose of the Study:
- To evaluate how different base solutions affect insulin bioavailability.
- To determine the stability of insulin in various solutions over a 3.5-hour period.
Main Methods:
- Insulin concentration measured via RIA in saline and total nutrient admixture.
- Application of insulin (Actrapid HM) in both solutions over 210 minutes.
- Statistical analysis using MANOVA, ANOVA, and paired t-tests with Bonferroni correction.
Main Results:
- Insulin concentration in saline decreased significantly over time (5.4% of theoretical).
- Insulin levels in total nutrient admixture remained stable (28.8% of theoretical).
- Time-dependent changes in insulin concentration were observed only in saline.
Conclusions:
- Insulin bioavailability is significantly higher and more stable in total nutrient admixture than in saline.
- Amino acids in nutrient mixtures may reduce insulin adsorption to surfaces, enhancing bioavailability.
- Further research is needed to clarify the effect of amino acid concentration on insulin bioavailability.