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Clavo B, Rodríguez-Abreu D, Galván S, Federico M, Martínez-Sánchez G, Ramallo-Fariña Y, Antonelli C, Benítez G, Rey-Baltar D, Jorge IJ, Rodríguez-Esparragón F, Serrano-Aguilar P. Long-term improvement by ozone treatment in chronic pain secondary to chemotherapy-induced peripheral neuropathy: A preliminary report. Front Physiol 2022; 13:935269. [PMID: 36111149 PMCID: PMC9468657 DOI: 10.3389/fphys.2022.935269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 08/09/2022] [Indexed: 11/25/2022] Open
Abstract
Background: Pain secondary to chemotherapy-induced peripheral neuropathy (CIPN) can limit the administration of chemotherapy, cancer-treatment outcomes, and the quality of life of patients. Oxidative stress and inflammation are some of the key mechanisms involved in CIPN. Successful treatments for CIPN are limited. This report shows our preliminary experience using ozone treatment as a modulator of oxidative stress in chronic pain secondary to CIPN. Methods: Ozone treatment, by rectal insufflation, was administered in seven patients suffering from pain secondary to grade II or III CIPN. Pain was assessed by the visual analog scale (VAS). Results: All patients, except one, showed clinically relevant pain improvement. Median pain score according to the VAS was 7 (range: 5–8) before ozone treatment, 4 (range: 2–6) at the end of ozone treatment (p = 0.004), 5.5 (range: 1.8–6.3) 3 months after the end of ozone treatment (p = 0.008), and 6 (range: 2.6–6.6) 6 months after the end of ozone treatment (p = 0.008). The toxicity grade, according to the Common Terminology Criteria for Adverse Events (CTCAE v.5.0), improved in half of the patients. Conclusion: This report shows that most patients obtained clinically relevant and long-lasting improvement in chronic pain secondary to CIPN after treatment with ozone. These observed effects merit further research and support our ongoing randomized clinical trial (NCT04299893).
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Affiliation(s)
- Bernardino Clavo
- Research Unit, Hospital Universitario de Gran Canaria Dr. Negrín, Las Palmas de Gran Canaria, Spain
- Chronic Pain Unit, Dr. Negrín University Hospital, Las Palmas de Gran Canaria, Spain
- Radiation Oncology Department, Hospital Universitario Dr. Negrín, Las Palmas de Gran Canaria, Spain
- Fundación Canaria Instituto de Investigación Sanitaria de Canarias (FIISC), Las Palmas de Gran Canaria, Spain
- Molecular and Translational Pharmacology Group, Universitary Institute for Research in Biomedicine and Health (iUIBS), University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias de la Universidad de La Laguna, Tenerife, Spain
- Research Network on Health Services in Chronic Diseases (REDISSEC), Instituto de Salud Carlos III, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
- Spanish Group of Clinical Research in Radiation Oncology (GICOR), Madrid, Spain
- *Correspondence: Bernardino Clavo, ; Francisco Rodríguez-Esparragón,
| | - Delvys Rodríguez-Abreu
- Medical Oncology Department, Complejo Hospitalario Universitario Insular Materno-Infantil de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | - Saray Galván
- Medical Oncology Department, Hospital Universitario de Gran Canaria Dr. Negrín, Las Palmas de Gran Canaria, Spain
| | - Mario Federico
- Radiation Oncology Department, Hospital Universitario Dr. Negrín, Las Palmas de Gran Canaria, Spain
| | | | - Yolanda Ramallo-Fariña
- Fundación Canaria Instituto de Investigación Sanitaria de Canarias (FIISC), Las Palmas de Gran Canaria, Spain
- Research Network on Health Services in Chronic Diseases (REDISSEC), Instituto de Salud Carlos III, Madrid, Spain
- Network for Research on Chronicity, Primary Care, and Health Promotion (RICAPPS), Tenerife, Spain
| | - Carla Antonelli
- Medical Oncology Department, Hospital Universitario de Gran Canaria Dr. Negrín, Las Palmas de Gran Canaria, Spain
| | - Gretel Benítez
- Medical Oncology Department, Complejo Hospitalario Universitario Insular Materno-Infantil de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | - Dolores Rey-Baltar
- Radiation Oncology Department, Hospital Universitario Dr. Negrín, Las Palmas de Gran Canaria, Spain
| | - Ignacio J Jorge
- Chronic Pain Unit, Dr. Negrín University Hospital, Las Palmas de Gran Canaria, Spain
| | - Francisco Rodríguez-Esparragón
- Research Unit, Hospital Universitario de Gran Canaria Dr. Negrín, Las Palmas de Gran Canaria, Spain
- Fundación Canaria Instituto de Investigación Sanitaria de Canarias (FIISC), Las Palmas de Gran Canaria, Spain
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias de la Universidad de La Laguna, Tenerife, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
- *Correspondence: Bernardino Clavo, ; Francisco Rodríguez-Esparragón,
| | - Pedro Serrano-Aguilar
- Research Network on Health Services in Chronic Diseases (REDISSEC), Instituto de Salud Carlos III, Madrid, Spain
- Network for Research on Chronicity, Primary Care, and Health Promotion (RICAPPS), Tenerife, Spain
- Servicio de Evaluación y Planificación del Servicio Canario de Salud (SESCS), Santa Cruz de Tenerife, Spain
- Red de Agencias de Evaluación de Tecnologías Sanitarias y Prestaciones del Sistema Nacional de Salud (RedETS), Madrid, Spain
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