AI Article Synopsis
- Alanine aminotransaminase (ALT) is an enzyme primarily found in the liver, and its levels in serum increase when there is liver tissue damage.
- A new disposable biosensor using iridium nanoparticles on carbon paste has been created to measure ALT concentrations by detecting hydrogen peroxide produced during ALT reactions.
- The biosensor works effectively at room temperature in various bodily fluids and demonstrates reliable results that align closely with standard spectrophotometric assays.
Article Abstract
Alanine aminotransaminase (ALT), is an enzyme that normally resides in serum and body tissues, especially in the liver. It is released into the serum as a result of tissue injury; hence the concentration of ALT in the serum may be increased with acute damage to hepatic cells. A single use, disposable biosensor, comprising iridium nano-particle as catalyst dispersed on carbon paste, has been developed for the determination of ALT concentration. The biosensor is based on quantifying H2O2 concentration produced by a serial of ALT enzymatic reactions. It operates well at room temperature in different physiological fluids: phosphate buffer, calf serum and human serum for ALT concentration of 0-544 ng/mL. Experimental results in human serum are compared to those obtained by spectrophotometric assays with excellent agreement. Therefore, the Ir/C biosensor shows good relationship on the dilution of concentrated ALT clinical applications.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4264364 | PMC |
| http://dx.doi.org/10.3390/bios1030107 | DOI Listing |
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