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Topical application of (S)-(–)-limonene is as effective as phonophoresis for improving oxidative parameters of injured skeletal muscle in rats

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Abstract

The aim of this study is to investigate the effects of limonene, alone or associated with therapeutic ultrasound, on oxidative stress following skeletal muscle injury. Thirty male Wistar rats were divided into 5 groups: CTR-control, MI-muscle injury without treatment, TPU-therapeutic pulsed ultrasound alone, TPU + LIM-phonophoresis with 5% limonene, and LIM-5% limonene applied topically. Muscle injury was induced by a mechanical abrupt impact over gastrocnemius muscle. The animals were treated in the following intervals: 2, 12, 24, 48, 72, and 96 h after injury. Blood and gastrocnemius samples were collected 98 h after lesion for data analysis. Creatine kinase (CK) and lactate dehydrogenase (LDH) activity, lipid peroxidation (TBARS) levels, catalase (CAT), and superoxide dismutase (SOD) activity were assessed. CK (p = 0.01), SOD activity (p < 0.01), and TBARS levels (p < 0.01) were increased after injury. There was no effect on LDH levels in any group. Phonophoresis (TABRS p < 0.01; SOD p = 0.01), TPU alone (TBARS p < 0.01; SOD p = 0.01), and LIM alone (TBARS p < 0.01; SOD p < 0.01) reduced TBARS levels and SOD activity after muscle injury. There was no change for CAT activity after injury. Only phonophoresis reduced CK activity after injury (p < 0.01). There was no difference between phonophoresis, TPU alone and LIM alone groups for TBARS, SOD, CAT, and LDH. Limonene alone and TPU alone were effective in reducing oxidative stress parameters after skeletal muscle injury. Only phonophoresis decreased CK activity. Skeletal muscle injury increases reactive oxidative species (ROS) levels and muscle proteins activity as creatine kinase (CK) and lactate dehydrogenase (LDH). Five percent limonene, alone or associated with therapeutic pulsed ultrasound, exhibited reduction of CK, superoxide dismutase (SOD) and catalase (CAT) activity, and lipid peroxidation markers (TBARS).

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Abbreviations

ADP:

Adenosine diphosphate

ATP:

Adenosine triphosphate

CTR:

Control

MI:

Muscle injury

BHT:

Butylated hydroxytoluene

CAT:

Catalase

CK:

Creatine kinase

ERA:

Effective radiation area

GP6:

Glucose-6-phosphate

LDH:

Lactate dehydrogenase

MDA:

Malondialdehyde

MHz:

Megahertz

NADPH:

Nicotinamide adenine dinucleotide phosphate hydrogen

NADP:

Nicotinamide adenine dinucleotide phosphate

ROS:

Reactive oxygen substances

SOD:

Superoxide dismutase

TBARS:

Thiobarbituric acid reactive substances

TPU:

Therapeutic pulsed ultrasound

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Funding

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

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Authors and Affiliations

Authors

Contributions

MMBS: conceptualization; methodology; formal analysis; visualization; writing—original draft preparation. LFSF: formal analysis; writing—review and editing; visualization; project administration. JBS: validation; investigation; resources; project administration. JERMF: validation; investigation; resources; formal analysis. TRRM: validation; investigation; resources; formal analysis. MSS: validation; investigation; resources. CMLV: validation; investigation; resources. SLS: validation; investigation; resources. EDO: conceptualization; methodology; resources; supervision; project administration; writing—review and editing. The authors declare that all data were generated in-house and that no paper mill was used.

Corresponding author

Correspondence to Luís Fernando Sousa Filho.

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The authors declare that they have no conflict of interest.

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Highlights

• Phonophoresis is not superior for reducing oxidative stress

• It is not clear the relation between drug absorption and therapeutic effect

• Five percent limonene alone reduces oxidative stress following muscle trauma

• Limonene may be a promising therapeutic agent for muscle injuries

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Santos, M.M.B., Filho, L.F.S., De Souza, J.B. et al. Topical application of (S)-(–)-limonene is as effective as phonophoresis for improving oxidative parameters of injured skeletal muscle in rats. Naunyn-Schmiedeberg's Arch Pharmacol 393, 2293–2300 (2020). https://doi.org/10.1007/s00210-020-01941-y

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  • DOI: https://doi.org/10.1007/s00210-020-01941-y

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