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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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Pemafibrate suppresses oxidative stress and apoptosis under cardiomyocyte ischemia-reperfusion injury in type 1 diabetes mellitus. Exp Ther Med 2021; 21:331. [PMID: 33732304 PMCID: PMC7903427 DOI: 10.3892/etm.2021.9762] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 10/14/2020] [Indexed: 12/18/2022] Open
Abstract
Diabetes mellitus accelerates the hyperglycemia susceptibility-induced injury to cardiac cells. The activation of peroxisome proliferator-activated receptor α (PPARα) decreases ischemia-reperfusion (IR) injury in animals without diabetes. Therefore, the present study hypothesized that pemafibrate may exert a protective effect on the myocardium in vivo and in vitro. A type 1 diabetes mellitus (T1DM) rat model and H9c2 cells exposed to high glucose under hypoxia and reoxygenation treatments were used in the present study. The rat model and the cells were subsequently treated with pemafibrate. In the T1DM rat model, pemafibrate enhanced the expression of PPARα in the diabetic-myocardial ischemia-reperfusion injury (D-IRI) group compared with the D-IRI group. The infarct size in the D-IRI group was reduced following pemafibrate treatment relative to the untreated group. The disruption of the mitochondrial structure and myofibrils in the D-IRI group was partially recovered by pemafibrate. In addition, to evaluate the mechanism of action of pemafibrate in the treatment of diabetic myocardial IR injury, an in vitro model was established. PPARα protein expression levels were reduced in the high glucose and hypoxia/reoxygenation (H/R) groups compared with that in the control or high glucose-treated groups. Pemafibrate treatment significantly enhanced the ATP and superoxide dismutase levels, and reduced the mitochondrial reactive oxygen species and malondialdehyde levels compared with the high glucose combined with H/R group. Furthermore, pemafibrate inhibited the expression of cytochrome c and cleaved-caspase-3, indicating its involvement in the regulation of mitochondrial apoptosis. Pemafibrate also reduced the expression of nuclear factor-κB (NF-κB), the activation of which reversed the protective effects of pemafibrate on diabetic myocardial IR injury in vitro. Taken together, these results suggested that pemafibrate may activate PPARα to protect the T1DM rat myocardium against IR injury through inhibition of NF-κB signaling.
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