Laser mediated production of reactive oxygen and nitrogen species; implications for therapy

Y G Kim1

  • 1Biological Science, Natural Sciences, Chosun University, Kwangju 501-759, South Korea. ygnkim@mail.chosun.ac.kr

Free Radical Research
|February 28, 2003
PubMed

Insights

Laser therapy can cause cellular damage by creating reactive oxygen and nitrogen species. This overview examines these side effects in experimental models of laser-induced thrombosis.

Area of Science:

  • Biomedical Engineering
  • Photomedicine
  • Molecular Biology

Background:

  • Laser therapy is widely adopted across various medical fields.
  • Potential adverse effects include interactions with cellular and extracellular matrix molecules.
  • These interactions can generate reactive oxygen species (ROS) and reactive nitrogen species (RNS).

Purpose of the Study:

  • To provide an overview of the side effects of laser therapy.
  • To discuss the mechanisms of laser-induced cellular damage.
  • To examine these effects within experimental models of laser-induced thrombosis.

Main Methods:

  • Review of existing literature on laser therapy side effects.
  • Analysis of experimental models demonstrating laser-induced thrombosis.
  • Focus on molecular mechanisms of ROS and RNS generation.

Main Results:

  • Laser therapy can induce oxidative and nitrosative stress.
  • Generated ROS and RNS can lead to lipid peroxidation, protein damage, and DNA modification.
  • These molecular events are relevant in the context of thrombosis models.

Conclusions:

  • Understanding laser-induced molecular damage is crucial for safe therapeutic application.
  • Experimental models provide insights into the mechanisms of laser therapy side effects.
  • Further research is needed to mitigate these adverse effects in clinical settings.

Related Concept Videos

Electron Transport Chain: Complex I and II01:46

Electron Transport Chain: Complex I and II

The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
Cancer Therapies02:49

Cancer Therapies

Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
Radical Reactivity: Overview01:11

Radical Reactivity: Overview

Radicals, the highly reactive species, gain stability by undergoing three different reactions. The first reaction involves a radical-radical coupling, in which a radical combines with another radical, forming a spin‐paired molecule. The second reaction is between a radical and a spin‐paired molecule, generating a new radical and a new spin‐paired molecule. The third reaction is radical decomposition in a unimolecular reaction, forming a new radical and a spin‐paired molecule. These three...
Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure01:16

Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure

Oxygen therapy has emerged as a significant tool in enhancing the quality of life for patients suffering from pulmonary arterial hypertension (PAH). While this therapy has principally been studied on patients with significant hypoxemia, this therapeutic approach helps prevent potential organ damage and can be administered in the comfort of one's home.
Oxygen therapy is vital in increasing and maintaining blood oxygen levels in PAH patients. As a result, it aids in reducing fatigue, improving...
Bioactivation and Tissue Toxicity01:25

Bioactivation and Tissue Toxicity

Bioactivation is a metabolic process that transforms less reactive substances into highly reactive metabolites, initiating tissue toxicity. This transformation can lead to various toxic effects, including carcinogenesis and teratogenesis. Reactive metabolites are classified into two main types: electrophiles and free radicals.Electrophiles are electron-deficient species and are produced primarily by the enzyme cytochrome P-450 during the metabolism of compounds containing carbon, nitrogen, or...
Oxygen Requirements and Growth Patterns01:29

Oxygen Requirements and Growth Patterns

Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...