Horseradish peroxidase (HRP), a highly investigated member of the peroxidase family, has been known − among many other biological activities − to catalyze the oxidation of flavonoids and phenolic substrates overall, quercetin among them. On the other hand, quercetin is very well known for its expressed antioxidant activities, which in the case of UV external radiation can be expressed partly in...

Horseradish peroxidase (HRP) mediates efficient conversion of many phenolic contaminants and thus has potential applications for pollution control. Such potentially important applications suffer however from the fact that the enzyme becomes quickly inactivated during phenol oxidation and polymerization. The work here provides the first experimental data of heme consumption and iron releases to ...

A new signal amplification strategy based on simultaneous application of gold nanoparticles (AuNPs) and horseradish peroxidase (HRP) was employed to improve the sensitivity of an electrochemical immunoassay for detection of human IgG (hIgG), as a model antigenic protein. This immunoassay system was fabricated on magnetic carboxyl-functionalized multi-walled carbon nanotubes (COOH-MWCNT/Fe3...

The widespread use of carbon nanotubes (CNTs) has raised concerns about the human health and ecological effects CNTs released into environment. Bacteria play an important role in bioremediation waste treatment, their enzymes are mostly responsible for degradation contaminants. However, there still only a few reports bacterial CNTs, evidence showing involvement CNT with mechanisms never been rep...

The purpose of the present investigation was to determine if the horseradish peroxidase (HRP) technique could be used as a method for labeling sensory nerve fibers (specifically, tooth pulp afferents) for detailed ultrastructural analyses. HRP injected into the trigeminal ganglion of adult rats was taken up by ganglion cell bodies and transported anterogradely to their peripheral endings in the...

Sorption-desorption behavior of phenol and o-cresol was studied on two soils belonging to the Haynie series (very fine sandy loams) collected from field and forested sites. Experimental investigations focused on the effect of HRP addition on sorption and desorption of target chemicals when present in solution alone, and when present as a mixture. Addition of HRP resulted in a dramatic increase ...

Radioresistant cells have been shown to correlate with poor outcome after radiotherapy. Here, we found that human telomerase reverse transcriptase promoter (hTERTp) had lower activity in laryngeal squamous carcinomas cells than in radioresistant variant cells. Combining radiotherapy with plasmid phTERTp-HRP, in which expression of enzyme horseradish peroxidase (HRP) controlled by hTERTp, result...

This paper introduces a simple new approach to object recognition from silhouettes. This new approach utilizes features extracted using an adaptive approximation technique called high-resolution pursuit (HRP). In this work, a comparatively small set of HRP features and a simple recognition scheme are used. We demonstrate the strengths of the HRP-based recognition scheme by discriminating among ...