Related Experiment Video
Updated: Mar 29, 2026

Generation of a Chronic Obstructive Pulmonary Disease Model in Mice by Repeated Ozone Exposure
Published on: August 25, 2017
Antioxidant Effect of Polyoxidonium and Metaprot during Bronchopulmonary Inflammation in Rats
1Department of Pharmacology, Military Medical Academy, Ministry of Defense of the Russian Federation, St. Petersburg, Russia.
Abstract:
The antioxidant effects of individual or combined application of polyoxidonium and metaprot were examined in rats with acute bronchopulmonary inflammation. By degree of antioxidant potency, polyoxidonium was inferior to metaprot, but their combined application produced more potent antioxidant effect. Polyoxidonium and metaprot in low concentrations increased and in high concentrations suppressed spontaneous biochemiluminescence in the model system of alveolar macrophages.
Insights
Polyoxidonium and metaprot show antioxidant effects in lung inflammation. Combined application yields a stronger antioxidant impact than either substance alone, offering potential therapeutic benefits.
Area of Science:
- Pharmacology
- Toxicology
- Biochemistry
Background:
- Acute bronchopulmonary inflammation is a significant health concern.
- Antioxidants play a crucial role in mitigating inflammatory processes.
- Understanding the synergistic effects of therapeutic agents is vital for effective treatment strategies.
Purpose of the Study:
- To investigate the antioxidant effects of polyoxidonium and metaprot, individually and in combination.
- To evaluate the impact of these agents on acute bronchopulmonary inflammation in a rat model.
- To assess the dose-dependent effects on alveolar macrophage biochemiluminescence.
Main Methods:
- Utilized a rat model of acute bronchopulmonary inflammation.
- Administered polyoxidonium and metaprot individually and in combination.
- Measured antioxidant potency and spontaneous biochemiluminescence in alveolar macrophages.
Main Results:
- Metaprot demonstrated greater individual antioxidant potency than polyoxidonium.
- The combined application of polyoxidonium and metaprot resulted in a more potent antioxidant effect.
- Both agents modulated spontaneous biochemiluminescence in alveolar macrophages in a concentration-dependent manner: low concentrations increased, while high concentrations suppressed it.
Conclusions:
- Polyoxidonium and metaprot exhibit significant antioxidant properties in the context of acute bronchopulmonary inflammation.
- Combined administration of these agents offers enhanced therapeutic potential compared to monotherapy.
- The concentration-dependent modulation of macrophage activity suggests a complex regulatory role.
Related Concept Videos
Chronic Obstructive Pulmonary Disease-II: Pathophysiology
Chronic Inflammation
COPD: Management Using Bronchodilators and Corticosteroids
Antiasthma Drugs: β2-Adrenoceptor Agonists
One class of bronchodilators includes β2-adrenoceptor agonists. These agents target the β2-adrenoceptors located on bronchial smooth muscle cells. By stimulating these receptors, β2-agonists induce...
Antiasthma Drugs: Muscarinic Receptor Antagonists
Antimuscarinic agents compete with ACh for the same binding site on the muscarinic receptors. By binding to these receptors, they inhibit the downstream effects of ACh and block the parasympathetic...
Antiasthma Drugs: Mast Cell Stabilizers and Anti-IgE Drugs
Mast cell stabilizers, such as cromolyn (also known as sodium cromoglycate) and nedocromil (Tilade), are effective drugs in asthma management. These stabilizers hinder histamine release by skillfully obstructing the activation of mast cells and other cellular entities. Notably, they navigate this task without...
Radical Autoxidation

