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Perrier Q, Moro C, Lablanche S. Diabetes in spotlight: current knowledge and perspectives of photobiomodulation utilization. Front Endocrinol (Lausanne) 2024; 15:1303638. [PMID: 38567306 PMCID: PMC10985212 DOI: 10.3389/fendo.2024.1303638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 02/26/2024] [Indexed: 04/04/2024] Open
Abstract
Introduction Diabetes is a global health concern characterized by chronic hyperglycemia resulting from insulinopenia and/or insulin resistance. The rising prevalence of diabetes and its associated complications (ulcers, periodontitis, healing of bone defect, neuropathy, retinopathy, cardiopathy and nephropathy) necessitate innovative therapeutic approaches. Photobiomodulation (PBM), involves exposing tissues and cells to low-energy light radiation, leading to biological effects, largely via mitochondrial activation. Methods This review evaluates preclinical and clinical studies exploring the potential of PBM in diabetes and its complications, as well all clinical trials, both planned and completed, available on ClinicalTrials database. Results This review highlights the variability in PBM parameters across studies, hindering consensus on optimal protocols. Standardization of treatment parameters and rigorous clinical trials are needed to unlock PBM's full therapeutic potential. 87 clinical trials were identified that investigated PBM in diabetes mellitus (with 5,837 patients planned to be treated with PBM). Clinical trials assessing PBM effects on diabetic neuropathy revealed pain reduction and potential quality of life improvement. Studies focusing on wound healing indicated encouraging results, with PBM enhancing angiogenesis, fibroblast proliferation, and collagen density. PBM's impact on diabetic retinopathy remains inconclusive however, requiring further investigation. In glycemic control, PBM exhibits positive effects on metabolic parameters, including glucose tolerance and insulin resistance. Conclusion Clinical studies have reported PBM-induced reductions in fasting and postprandial glycemia without an increased hypoglycemic risk. This impact of PBM may be related to its effects on the beta cells and islets in the pancreas. Notwithstanding challenges, PBM emerges as a promising adjunctive therapy for managing diabetic neuropathy, wound healing, and glycemic control. Further investigation into its impact on diabetic retinopathy and muscle recovery is warranted.
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Affiliation(s)
- Quentin Perrier
- Univ. Grenoble Alpes, INSERM U1055, Pharmacy Department, Grenoble Alpes University Hospital, Laboratory of Fundamental and Applied Bioenergetics, Grenoble, France
| | - Cécile Moro
- Univ. Grenoble Alpes, CEA-Leti, Clinatec, Grenoble, France
| | - Sandrine Lablanche
- Univ. Grenoble Alpes, INSERM U1055, Diabetology and Endocrinology Department, Grenoble Alpes University Hospital, Laboratory of Fundamental and Applied Bioenergetics, Grenoble, France
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Dos Santos Soares F, de Souza Pinto M, Kruger A, Coracini CA, Bertolini GRF. Photobiomodulation therapy on skeletal muscles exposed to diabetes mellitus: a systematic review of animal studies. Lasers Med Sci 2023; 38:185. [PMID: 37580518 DOI: 10.1007/s10103-023-03853-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 08/08/2023] [Indexed: 08/16/2023]
Abstract
Diabetes-related muscle damage has been overlooked despite its known association with increased morbidity and mortality in DM individuals. PBMT is a recognized alternative to improve skeletal muscle health in other populations, but its effectiveness in DM is still unclear. To address this issue, we reviewed preclinical studies, available in any language and period, in ten sources of information. The methods were previously registered at PROSPERO (CRD42021271041), based on PRISMA recommendations. Studies in murine models of T1DM or T2DM that reported quantitative analyses of skeletal muscles treated with low-level light therapy could be included after a blind selection process. Most of the seven included studies focus on decompensated T1DM rats with acute muscle injury (cryoinjury or contusion). In these five studies, PBMT improved muscle regeneration, by reducing inflammation and stimulating factors pro-angiogenesis and pro-myogenesis. Some positive effects could also be observed in two studies on muscles without acute injury: control of oxidative stress (T1DM) and reduction of myosteatosis (T2DM). Although infrared laser applied locally appears to be a promising approach, optimal parameters are undefined due to the heterogeneity of outcomes and high risk of bias, which prevented a quantitative synthesis. Several aspects of this growing field have yet to be investigated, particularly regarding the DM model (e.g., aged animals, T2DM), intervention (e.g., comparison with LED), and outcomes (e.g., muscle mass, strength, and function). Future research should aim to improve the internal validity by following guidelines for animal studies and enhance the translatability to clinical trials by using animal models that closely mimic patients with DM in rehabilitation settings.
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Affiliation(s)
- Francyelle Dos Santos Soares
- Department of Physical Therapy, Center of Biological and Health Sciences, State University of Western Paraná, Universitaria St. 2069, Cascavel, Paraná, 85819-110, Brazil
| | - Milena de Souza Pinto
- Department of Physical Therapy, Center of Biological and Health Sciences, State University of Western Paraná, Universitaria St. 2069, Cascavel, Paraná, 85819-110, Brazil
| | - Alana Kruger
- Department of Physical Therapy, Center of Biological and Health Sciences, State University of Western Paraná, Universitaria St. 2069, Cascavel, Paraná, 85819-110, Brazil
| | - Camila Amaral Coracini
- Department of Physical Therapy, Center of Biological and Health Sciences, State University of Western Paraná, Universitaria St. 2069, Cascavel, Paraná, 85819-110, Brazil
| | - Gladson Ricardo Flor Bertolini
- Department of Physical Therapy, Center of Biological and Health Sciences, State University of Western Paraná, Universitaria St. 2069, Cascavel, Paraná, 85819-110, Brazil.
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da Silva Tonetto L, da Silva CCF, Gonzatti N, Guex CG, Hartmann DD, Boschi ES, Lago PD, Trevisan ME, de Freitas Bauermann L, Jaenisch RB. Effects of photobiomodulation on oxidative stress in rats with type 2 diabetes mellitus. Lasers Med Sci 2023; 38:90. [PMID: 36947266 DOI: 10.1007/s10103-023-03745-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 02/18/2023] [Indexed: 03/23/2023]
Abstract
The present study aimed to evaluate photobiomodulation effects on oxidative stress in type 2 diabetes mellitus (DM2). Thirty-one male Wistar rats were used and divided into 4 groups: group 1 - animals without diabetes mellitus 2 without laser 21 J/cm2 (C-SHAM), group 2 - animals with diabetes mellitus 2 without laser 21 J/cm2 (C-DM2), group 3 - animals without diabetes mellitus 2 with laser 21 J/cm2 (L-SHAM), group 4 - animals with diabetes mellitus 2 with laser 21 J/cm2 (L-DM2). The protocol was performed 5 days/week, for 6 weeks. The animals that received photobiomodulation had one dose irradiated at two spots in the right gastrocnemius muscle. Twenty-four hours after the last intervention, the animals were euthanized. Heart, diaphragm, liver, right gastrocnemius, plasma, kidneys, weighed, and stored for further analysis. In rats with DM2, photobiomodulation promoted a decrease in thiobarbituric acid reactive substance assay (TBARS) in plasma levels. On the other hand, photobiomodulation demonstrated an increase in non-protein thiol levels (NPSH) in the heart, diaphragm and gastrocnemius. Moreover, photobiomodulation produced in the heart, diaphragm and plasma levels led to an increase in superoxide dismutase (SOD). Interestingly, photobiomodulation was able to increase superoxide dismutase in rats without DM2 in the heart, diaphragm, gastrocnemius and kidneys. These findings suggested that 6 weeks of photobiomodulation in rats with DM2 promoted beneficial adaptations in oxidative stress, with a decrease in parameters of oxidant activity and an increase in antioxidant activity.
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Affiliation(s)
- Larissa da Silva Tonetto
- Department of Physiotherapy and Rehabilitation, Postgraduate Program in Movement and Rehabilitation Sciences, Federal University of Santa Maria, Santa Maria, Brazil
| | - Carlos Cassiano Figueiró da Silva
- Department of Physiotherapy and Rehabilitation, Postgraduate Program in Movement and Rehabilitation Sciences, Federal University of Santa Maria, Santa Maria, Brazil
| | - Nubia Gonzatti
- Department of Physiotherapy and Rehabilitation, Postgraduate Program in Movement and Rehabilitation Sciences, Federal University of Santa Maria, Santa Maria, Brazil
| | - Camille Gaube Guex
- Department of Physiology and Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Diane Duarte Hartmann
- Department of Biochemical Sciences, Postgraduate Program in Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Emerson Soldateli Boschi
- Department of Physiotherapy, Pontifical Catholic University of Rio Grande Do Sul, Porto Alegre, RS, Brazil
| | - Pedro Dal Lago
- Department of Physiotherapy, Federal University of Health Sciences, Porto Alegre, RS, Brazil
| | - Maria Elaine Trevisan
- Department of Physiotherapy and Rehabilitation, Postgraduate Program in Movement and Rehabilitation Sciences, Federal University of Santa Maria, Santa Maria, Brazil
| | | | - Rodrigo Boemo Jaenisch
- Department of Physiotherapy and Rehabilitation, Postgraduate Program in Movement and Rehabilitation Sciences, Federal University of Santa Maria, Santa Maria, Brazil.
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Photobiomodulation and Sports: Results of a Narrative Review. Life (Basel) 2021; 11:life11121339. [PMID: 34947870 PMCID: PMC8706093 DOI: 10.3390/life11121339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 11/24/2021] [Accepted: 11/30/2021] [Indexed: 11/17/2022] Open
Abstract
Benefits of photobiomodulation (PBM) have been known for several decades. More recently, PBM applied in sports offers a special chance to support the modeling of the performance and recovery. Increasingly complex physical activities and fierce competition in the world of sports generate a state of psycho-emotional and physical stress that can induce chronic fatigue syndrome, failure in physical training, predisposition to muscle damage, physical and emotional exhaustion etc., for which PBM could be an excellent solution. To evaluate and identify all risk factors and the influence of PBM on health and performance in sport and for a better understanding of its effects, we did a search for "Photobiomodulation and Sports" on PubMed, to update the PBM science applied in sports, and we retained for analysis the articles published from 2014 to date. The term "PBM" is recent, and we did not include previous studies with "low level laser therapy" or "LLLT" before 2014. In the present research, PBM has been shown to have valuable protective and ergogenic effects in 25 human studies, being the key to success for high performance and recovery, facts supported also by 22 animal studies. PBM applied creatively and targeted depending on sport and size of the level of physical effort could perfectly modulate the mitochondrial activity and thus lead to remarkable improvements in performance. PBM with no conclusive results or without effects from this review (14 studies from a total of 39 on humans) was analyzed and we found the motivations of the authors from the perspective of multiple causes related to technological limitations, participants, the protocols for physical activity, the devices, techniques and PBM parameters. In the near future, dose-response experiments on physical activity should be designed and correlated with PBM dose-response studies, so that quantification of PBM parameters to allow the energy, metabolic, immune, and neuro-endocrine modulation, perfectly coupled with the level of training. There is an urgent need to continuously improve PBM devices, delivery methods, and protocols in new ingenious future sports trials. Latest innovations and nanotechnologies applied to perform intracellular signaling analysis, while examining extracellular targets, coupled with 3D and 4D sports motion analysis and other high-tech devices, can be a challenge to learn how to maximize PBM efficiency while achieving unprecedented sports performance and thus fulfilling the dream of millions of elite athletes.
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Post-resistance exercise photobiomodulation therapy has a more effective antioxidant effect than pre-application on muscle oxidative stress. Photochem Photobiol Sci 2021; 20:585-595. [PMID: 33864617 DOI: 10.1007/s43630-021-00042-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 04/08/2021] [Indexed: 01/04/2023]
Abstract
This study evaluated the effect of photobiomodulation therapy (PBMt) before or after a high-intensity resistance exercise (RE) session on muscle oxidative stress. Female Wistar rats were assigned to one of the following groups: Sham (non-exercised, undergoing placebo-PBMt); NLRE (exercised, undergoing placebo-PBMt); PBMt + RE (pre-exercise PBMt); RE + PBMt (post-exercise PBMt). The RE comprised four climbs bearing the maximum load with a 2 min rest between each climb. An 830-nm aluminum gallium arsenide diode laser (100 mW; 0.028 cm2; 3.57 mW/cm2; 142.8 J/cm2; 4 J; Photon Laser III, DMC, São Paulo, Brazil) was applied 60 s before or after RE in gastrocnemius muscles. Analyses were performed at 24 h after RE: lipoperoxidation using malondialdehyde (MDA) and protein oxidation (OP) on Western blot. Superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx) activity were spectrophotometrically assessed. Nitric oxide (NO) level was determined by the Griess reaction. The MDA and OP levels were significantly higher in the NLRE group. Increased OP was prevented in all PBMt groups; however, increased MDA was prevented only in the RE + PBMT group. The RE + PBMt group had higher SOD activity compared to all other groups. A higher GPx activity was observed only in the PBMT + RE compared to Sham group, and CAT activity was reduced by RE, without PBMt effect. NO levels were unchanged with RE or PBMt. Therefore, PBMt application after a RE section has a more potent antioxidant effect than previous PBMt. Rats submitted to post-RE PBMt illustrated prevention of increased lipoperoxidation and protein oxidation as well as increased SOD activity. The photobiomodulation can attenuate oxidative stress induced by resistance exercise. A more evident benefit shows to be obtained with the application after exercise, in which it has increased the activity of superoxide dismustase.
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Yamada EF, Dos Santos Stein C, Moresco RN, Bobinski F, Palandi J, Fernandes PF, Folmer V, da Silva MD. Photobiomodulation and Sida tuberculata combination declines the inflammation's markers in knee-induced osteoarthritis. Lasers Med Sci 2021; 37:193-204. [PMID: 33417067 DOI: 10.1007/s10103-020-03207-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 11/19/2020] [Indexed: 12/13/2022]
Abstract
The aim of this study was to assess potential combination effects of photobiomodulation therapy (PBMT) with Sida tuberculata extracts on the oxidative stress and antioxidant activity, as well as on the inflammatory process. Rats with knee osteoarthritis (OA) were treated with S. tuberculata extracts and PBMT (904 nm, 18 J/cm2). The animals were evaluated for nociception and edema. The blood, knee lavage and structures, spinal cord, and brainstem were collected for biochemical analyses (lipid peroxidation, protein carbonyl content, superoxide dismutase activity, non-protein thiol levels, and measurement of nitrite/nitrate). The knee structures were also used to measure cytokine levels. PBMT lowered the damage due to oxidative stress in the knee and at distant sites from the lesion. PBMT also reduced the levels of nitric oxide and cytokines, which could explain the nociception reduction mechanism. Similarly, S. tuberculata decreased the damage by oxidative stress, levels of nitrite/nitrate, and cytokines. The therapy combination reduced levels of cytokines and nitrite/nitrate. PBMT and S. tuberculata extracts reduced the oxidative stress and inflammation. It is noteworthy that PBMT increased the antioxidant activity in the knee and at sites distant from the lesion, contributing to a more significant decrease in nociception. The combination of therapies did not present significant effects on the analyzed parameters. Therefore, it is suggested that PBM is sufficient to minimize the signs and symptoms of the knee OA in our rat model.
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Affiliation(s)
- Eloá Ferreira Yamada
- Graduate Program in Biochemistry, Universidade Federal do Pampa (Unipampa), BR 472, Km 585, Uruguaiana, RS, 97501-970, Brazil.
| | - Carolina Dos Santos Stein
- Laboratory of Clinical Biochemistry, Department of Clinical and Toxicological Analyses, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, 97105-900, Brazil
| | - Rafael Noal Moresco
- Laboratory of Clinical Biochemistry, Department of Clinical and Toxicological Analyses, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, 97105-900, Brazil
| | - Franciane Bobinski
- Graduate Program in Health Sciences, Laboratory of Experimental Neuroscience (LaNEx), Universidade do Sul de Santa Catarina (UNISUL), Palhoça, SC, 88137-272, Brazil
| | - Juliete Palandi
- Graduate Program in Health Sciences, Laboratory of Experimental Neuroscience (LaNEx), Universidade do Sul de Santa Catarina (UNISUL), Palhoça, SC, 88137-272, Brazil.,Laboratory of Experimentation in Neuropathology (LEN), Graduate Program in Neuroscience, Biochemistry Department, Biological Sciences Center, Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC, 88040-900, Brazil
| | - Paula Franson Fernandes
- Graduate Program in Health Sciences, Laboratory of Experimental Neuroscience (LaNEx), Universidade do Sul de Santa Catarina (UNISUL), Palhoça, SC, 88137-272, Brazil
| | - Vanderlei Folmer
- Graduate Program in Biochemistry, Universidade Federal do Pampa (Unipampa), BR 472, Km 585, Uruguaiana, RS, 97501-970, Brazil
| | - Morgana Duarte da Silva
- Graduate Program in Biochemistry, Universidade Federal do Pampa (Unipampa), BR 472, Km 585, Uruguaiana, RS, 97501-970, Brazil
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Macedo MM, Mafra FFP, Teixeira CDB, Torres-Silva R, Dos Santos Francisco RP, Gattai PP, Boim MA, Bjordal JM, Nascimento FD, Leonardo PS, Stamborowski SSF, Lopes-Martins RÁB. Photobiomodulation Therapy Modulates Muscle Gene Expression and Improves Performance of Rats Subjected to a Chronic Resistance Exercise Protocol. PHOTOBIOMODULATION PHOTOMEDICINE AND LASER SURGERY 2020; 38:713-719. [PMID: 32990506 DOI: 10.1089/photob.2019.4792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Objective: In professional sports activities, the search for increased performance is constant. Electrophysical agents, including photobiomodulation (PBM), have been used in the sports context to accelerate postworkout recovery, prevent injuries, and even to improve performance. This study aims to investigate the effects of infrared laser (904 nm) on skeletal muscle gene expression of performance-related proteins of rats submitted to a chronic resistance training protocol. Materials and methods: Male Wistar rats (n = 40), weighing ±300 g were divided into four groups: sedentary control (CT, n = 10); irradiated control (CTL, n = 10); exercised not irradiated (EX, n = 10); exercised irradiated (EXL, n = 10). To assess the performance, the maximum carrying test was adapted and applied 72 h prior the training and 72 h after the last exercise session. The vertical weight climbing protocol was adapted for resistance training 3 × per week with 48 h interval between each session: first week adaptation, second week 25% of body weight (BW), third week 50% BW, fourth week 75% BW, and fifth week 100% BW. Animals were irradiated before exercise on hind paws 50 sec each, with infrared laser 904 nm 5 days per week, during 4 weeks, 9 J per leg in a total of 18 J energy per day. Results: The EXL performed more climbing (7.1 ± 0.91) compared to EX (4.4 ± 0.63). PBM promoted increased expression of lactate dehydrogenase enzyme, mammalian target of rapamycin protein, and androgen receptor (p < 0.05) but not the myosin heavy chain (p = 0.43). Conclusions: PBM therapy increases the expression of performance-related muscle mass gain genes besides improving the resistance training performance.
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Affiliation(s)
- Michel Monteiro Macedo
- Technology Research Center (NPT), Post-Graduate Program in Biomedical Engineering, University of Mogi das Cruzes (UMC), São Paulo, Brazil
| | - Fernando Francisco Pazello Mafra
- Technology Research Center (NPT), Post-Graduate Program in Biomedical Engineering, University of Mogi das Cruzes (UMC), São Paulo, Brazil
| | - Carla de Brito Teixeira
- Technology Research Center (NPT), Post-Graduate Program in Biomedical Engineering, University of Mogi das Cruzes (UMC), São Paulo, Brazil
| | - Romildo Torres-Silva
- Technology Research Center (NPT), Post-Graduate Program in Biomedical Engineering, University of Mogi das Cruzes (UMC), São Paulo, Brazil
| | - Raphael Peres Dos Santos Francisco
- Technology Research Center (NPT), Post-Graduate Program in Biomedical Engineering, University of Mogi das Cruzes (UMC), São Paulo, Brazil
| | - Pedro Paulo Gattai
- Brazilian School of Chinese Medicine (EBRAMEC), Sao Paulo, Brazil.,Laboratory of Microscopic Anatomy and Development, University of São Paulo (USP), Sao Paulo, Brazil
| | - Mirian Aparecida Boim
- Department of Nephrology, Federal University of São Paulo (UNIFESP), Sao Paulo, Brazil
| | - Jan Magnus Bjordal
- Physiotherapy Research Group, Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
| | - Fabio Dupart Nascimento
- Technology Research Center (NPT), Post-Graduate Program in Biomedical Engineering, University of Mogi das Cruzes (UMC), São Paulo, Brazil
| | - Patrícia Sardinha Leonardo
- Laboratory of Biophotonics and Experimental Therapeutics, Institute of Research and Development, University of Vale do Paraíba (UNIVAP), Sao Paulo, Brazil
| | - Sadi S F Stamborowski
- Laboratory of Biophotonics and Experimental Therapeutics, Institute of Research and Development, University of Vale do Paraíba (UNIVAP), Sao Paulo, Brazil
| | - Rodrigo Álvaro Brandão Lopes-Martins
- Laboratory of Biophotonics and Experimental Therapeutics, Institute of Research and Development, University of Vale do Paraíba (UNIVAP), Sao Paulo, Brazil
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Oxidative Stress in Muscle Diseases: Current and Future Therapy 2019. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:6030417. [PMID: 32377303 PMCID: PMC7193296 DOI: 10.1155/2020/6030417] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 03/14/2020] [Indexed: 12/20/2022]
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Peixoto JVC, Santos ASR, Corso CR, da Silva FS, Capote A, Ribeiro CD, Abreu BJDGA, Acco A, Fogaça RH, Dias FAL. Thirty-day experimental diabetes impairs contractility and increases fatigue resistance in rat diaphragm muscle associated with increased anti-oxidative activity. Can J Physiol Pharmacol 2020; 98:490-497. [PMID: 32243773 DOI: 10.1139/cjpp-2019-0609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Diabetes mellitus is a metabolic disorder that can generate tissue damage through several pathways. Alteration and dysfunction of skeletal muscle are reported including respiratory muscles, which may compromise respiratory parameters in diabetic patients. We have aimed to evaluate the diaphragm muscle contractility, tissue remodeling, oxidative stress, and inflammatory parameters from 30 day streptozotocin-treated rats. The diaphragm contractility was assessed using isolated muscle, tissue remodeling using histology and zymography techniques, and tissue oxidative stress and inflammatory parameters by enzyme activity assay. Our data revealed in the diabetes mellitus group an increase in maximum tetanic force (4.82 ± 0.13 versus 4.24 ± 0.18 N/cm2 (p = 0.015)) and fatigue resistance (139.16 ± 10.78 versus 62.25 ± 4.45 s (p < 0.001)), reduction of 35.4% in muscle trophism (p < 0.001), increase of 32.6% of collagen deposition (p = 0.007), reduction of 21.3% in N-acetylglucosaminidase activity (p < 0.001), and increase of 246.7% of catalase activity (p = 0.002) without changes in reactive oxygen species (p = 0.518) and tissue lipid peroxidation (p = 0.664). All observed changes are attributed to the poor glycemic control (471.20 ± 16.91 versus 80.00 ± 3.42 mg/dL (p < 0.001)), which caused defective tissue regeneration and increased catalase activity as a compensatory mechanism.
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Affiliation(s)
- João Victor Capelli Peixoto
- Department of Physiology, Federal University of Paraná, Av. Francisco H. dos Santos 100, Jardim das Américas, Curitiba, Paraná 81531-980, Brazil
| | - Antônio Sérgio Rocha Santos
- Department of Physiology, Federal University of Paraná, Av. Francisco H. dos Santos 100, Jardim das Américas, Curitiba, Paraná 81531-980, Brazil
| | - Claudia Rita Corso
- Department of Pharmacology, Federal University of Paraná, Av. Francisco H. dos Santos 100, Jardim das Américas, Curitiba, Paraná 81531-980, Brazil
| | - Flavio Santos da Silva
- Department of Health Sciences, Federal Rural University of the Semi-Arid, Av. Francisco Mota 572, Pres. Costa e Silva, Mossoró, Rio Grande do Norte 59625-900, Brazil
| | - Andrielle Capote
- Department of Physiology, Federal University of Paraná, Av. Francisco H. dos Santos 100, Jardim das Américas, Curitiba, Paraná 81531-980, Brazil
| | - Cibele Dias Ribeiro
- Department of Physiology, Federal University of Paraná, Av. Francisco H. dos Santos 100, Jardim das Américas, Curitiba, Paraná 81531-980, Brazil
| | - Bento João da Graça Azevedo Abreu
- Department of Morphology, Federal University of Rio Grande do Norte, Av. Senador Salgado Filho 3000, Candelária, Natal, Rio Grande do Norte 59064-741, Brazil
| | - Alexandra Acco
- Department of Pharmacology, Federal University of Paraná, Av. Francisco H. dos Santos 100, Jardim das Américas, Curitiba, Paraná 81531-980, Brazil
| | - Rosalvo Hochmueller Fogaça
- Department of Physiology, Federal University of Paraná, Av. Francisco H. dos Santos 100, Jardim das Américas, Curitiba, Paraná 81531-980, Brazil
| | - Fernando Augusto Lavezzo Dias
- Department of Physiology, Federal University of Paraná, Av. Francisco H. dos Santos 100, Jardim das Américas, Curitiba, Paraná 81531-980, Brazil
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