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A Novel Technique for Generating and Observing Chemiluminescence in a Biological Setting
08:57

A Novel Technique for Generating and Observing Chemiluminescence in a Biological Setting

Published on: March 9, 2017

Chemiluminescent analysis of light-irradiated leukocytes as a diagnostic tool for fast identification of pathological

Michael S Sinyakov1, Tanya S Shlenskaya, Sandro Belotsky

  • 1The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Israel. sinyakov@mail.biu.ac.il

Photomedicine and Laser Surgery
|September 7, 2007
PubMed
Abstract

Insights

Leukocyte light sensitivity can identify nonpathological and pathological states. This photochemical approach links polymorphonuclear neutrophil (PMN) counts to reactive oxygen species (ROS) levels for disease assessment.

Area of Science:

  • Immunology
  • Biochemistry
  • Photobiology

Background:

  • Healthy cells exhibit light insensitivity, while pathological cells show light sensitivity.
  • Reactive oxygen species (ROS), primarily from polymorphonuclear neutrophils (PMN), are key in host defense during disease.
  • Assessing PMN numbers and ROS production can evaluate inflammatory pathology resistance.

Purpose of the Study:

  • To develop an alternative photochemical method for evaluating leukocyte potential to resist inflammatory pathology.
  • To correlate polymorphonuclear neutrophil (PMN) counts with reactive oxygen species (ROS) generation.

Main Methods:

  • Human leukocytes from 34 donors were isolated and exposed to blue light (2 and 5 mW/cm² for 2 minutes).
  • A luminol-dependent chemiluminescence assay measured intracellular ROS production.
  • Basal chemiluminescence (BCL) levels were correlated with PMN counts.

Main Results:

  • A light-insensitive group, identified as nonpathological, was distinguished from light-sensitive pathological groups.
  • Three distinct light-sensitive groups, corresponding to different pathological states, were identified.
  • Within pathological groups, PMN numbers and BCL counts were interrelated, with specific PMN ranges associated with distinct intracellular ROS levels.

Conclusions:

  • Leukocyte light responsiveness effectively differentiates pathological from nonpathological states.
  • This method allows for prognostic evaluation of inflammatory pathology development.
  • Novel insights into nonpathological states and the PMN-ROS relationship in pathology are proposed.

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