Mechanistic perspective of the oxido-immunopathologic resolution property of kolaviron in mice influenza pneumonitis.
Identifieur interne : 000A84 ( Main/Exploration ); précédent : 000A83; suivant : 000A85Mechanistic perspective of the oxido-immunopathologic resolution property of kolaviron in mice influenza pneumonitis.
Auteurs : Ifeoluwa O. Awogbindin [Nigeria] ; David O. Olaleye [Nigeria] ; Ebenezer O. Farombi [Nigeria]Source :
- APMIS : acta pathologica, microbiologica, et immunologica Scandinavica [ 1600-0463 ] ; 2017.
Descripteurs français
- KwdFr :
- Animaux, Anti-inflammatoires (pharmacologie), Antioxydants (pharmacologie), Flavonoïdes (pharmacologie), Immunohistochimie, Infections à Orthomyxoviridae (anatomopathologie), Inflammation (anatomopathologie), Modèles animaux de maladie humaine, Pneumopathie virale (anatomopathologie), Poumon (), Poumon (anatomopathologie), Souris, Souris de lignée BALB C, Stress oxydatif ().
- MESH :
- anatomopathologie : Infections à Orthomyxoviridae, Inflammation, Pneumopathie virale, Poumon.
- pharmacologie : Anti-inflammatoires, Antioxydants, Flavonoïdes.
- Animaux, Immunohistochimie, Modèles animaux de maladie humaine, Poumon, Souris, Souris de lignée BALB C, Stress oxydatif.
English descriptors
- KwdEn :
- Animals, Anti-Inflammatory Agents (pharmacology), Antioxidants (pharmacology), Disease Models, Animal, Flavonoids (pharmacology), Immunohistochemistry, Inflammation (pathology), Lung (drug effects), Lung (pathology), Mice, Mice, Inbred BALB C, Orthomyxoviridae Infections (pathology), Oxidative Stress (drug effects), Pneumonia, Viral (pathology).
- MESH :
- chemical , pharmacology : Anti-Inflammatory Agents, Antioxidants, Flavonoids.
- drug effects : Lung, Oxidative Stress.
- pathology : Inflammation, Lung, Orthomyxoviridae Infections, Pneumonia, Viral.
- Animals, Disease Models, Animal, Immunohistochemistry, Mice, Mice, Inbred BALB C.
Abstract
Implicated in influenza-associated pathology are innate defence overzealousness and unabated secretion of oxidative tissue-sensitive antimicrobial agents. At different time points, mice were pre-treated with kolaviron (400 mg/kg), a natural antioxidant and anti-inflammatory agent, and subsequently challenged with 2 LD50 influenza A/H3N2/Perth/16/09 virus. After euthanasia at day 6, blood, lungs, liver and spleen were collected and processed for biochemical, immunohistochemical and flow cytometric assessment of redo-inflammatory imbalance, cytokine storm indices and T helper 1 host response. Previously kolaviron was reported to delay mortality onset, improve morbidity and attenuate myeloperoxidase activity and nitric oxide production with minimal impact on viral clearance. This study additionally confirmed nitric oxide, but not hydrogen peroxide, as the major culprit implicated in influenza virus-induced oxido-pathology. Systemic effect of the sustained inflammation and nitrosative stress was more prominent in the spleen and lung than in the liver of mice infected with A/H3N2/Perth/16/09. Influential to immunopathology was heightened pulmonary expression of IL-1β, RANTES, IL-10, MCP-1, NF-κB, iNOS and COX-2. However, kolaviron combated the influenza-established nitrative stress, reversed the elicited cytokine storm and restored the oxidized environment to a reductive milieu. Our data also suggest that kolaviron administration early in infection may foster CD4+ response. These data indicate that kolaviron may confer disease-dwindling properties during acute influenza infection via a system-wide protective approach involving multiple targets especially at the early stage of the infection.
DOI: 10.1111/apm.12640
PubMed: 28116826
Affiliations:
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Le document en format XML
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Awogbindin</name><affiliation wicri:level="4"><nlm:affiliation>Departments of Biochemistry University of Ibadan, Ibadan, Nigeria.</nlm:affiliation><country xml:lang="fr">Nigeria</country><wicri:regionArea>Departments of Biochemistry University of Ibadan, Ibadan</wicri:regionArea><orgName type="university">Université d'Ibadan</orgName><placeName><settlement type="city">Ibadan</settlement><region type="region">État d'Oyo</region></placeName></affiliation></author><author><name sortKey="Olaleye, David O" sort="Olaleye, David O" uniqKey="Olaleye D" first="David O" last="Olaleye">David O. Olaleye</name><affiliation wicri:level="4"><nlm:affiliation>Department of Virology, University of Ibadan, Ibadan, Nigeria.</nlm:affiliation><country xml:lang="fr">Nigeria</country><wicri:regionArea>Department of Virology, University of Ibadan, Ibadan</wicri:regionArea><orgName type="university">Université d'Ibadan</orgName><placeName><settlement type="city">Ibadan</settlement><region type="region">État d'Oyo</region></placeName></affiliation></author><author><name sortKey="Farombi, Ebenezer O" sort="Farombi, Ebenezer O" uniqKey="Farombi E" first="Ebenezer O" last="Farombi">Ebenezer O. 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At different time points, mice were pre-treated with kolaviron (400 mg/kg), a natural antioxidant and anti-inflammatory agent, and subsequently challenged with 2 LD<sub>50</sub> influenza A/H3N2/Perth/16/09 virus. After euthanasia at day 6, blood, lungs, liver and spleen were collected and processed for biochemical, immunohistochemical and flow cytometric assessment of redo-inflammatory imbalance, cytokine storm indices and T helper 1 host response. Previously kolaviron was reported to delay mortality onset, improve morbidity and attenuate myeloperoxidase activity and nitric oxide production with minimal impact on viral clearance. This study additionally confirmed nitric oxide, but not hydrogen peroxide, as the major culprit implicated in influenza virus-induced oxido-pathology. Systemic effect of the sustained inflammation and nitrosative stress was more prominent in the spleen and lung than in the liver of mice infected with A/H3N2/Perth/16/09. Influential to immunopathology was heightened pulmonary expression of IL-1β, RANTES, IL-10, MCP-1, NF-κB, iNOS and COX-2. However, kolaviron combated the influenza-established nitrative stress, reversed the elicited cytokine storm and restored the oxidized environment to a reductive milieu. Our data also suggest that kolaviron administration early in infection may foster CD4<sup>+</sup> response. These data indicate that kolaviron may confer disease-dwindling properties during acute influenza infection via a system-wide protective approach involving multiple targets especially at the early stage of the infection.</div></front></TEI><affiliations><list><country><li>Nigeria</li></country><region><li>État d'Oyo</li></region><settlement><li>Ibadan</li></settlement><orgName><li>Université d'Ibadan</li></orgName></list><tree><country name="Nigeria"><region name="État d'Oyo"><name sortKey="Awogbindin, Ifeoluwa O" sort="Awogbindin, Ifeoluwa O" uniqKey="Awogbindin I" first="Ifeoluwa O" last="Awogbindin">Ifeoluwa O. Awogbindin</name></region><name sortKey="Farombi, Ebenezer O" sort="Farombi, Ebenezer O" uniqKey="Farombi E" first="Ebenezer O" last="Farombi">Ebenezer O. Farombi</name><name sortKey="Olaleye, David O" sort="Olaleye, David O" uniqKey="Olaleye D" first="David O" last="Olaleye">David O. 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