Raman spectroscopy and sciatic functional index (SFI) after low-level laser therapy (LLLT) in a rat sciatic nerve crush injury model

Mangueira, Melissa de Almeida Melo Maciel; Caparelli-Dáquer, Egas; Filho, Ozimo Pereira Gama; Assis, Diogo Souza Ferreira Rubim de; Sousa, Janyeid Karla Castro; Lima, Willy Leite; Pinheiro, António Luiz Barbosa; Silveira, Landulfo; Mangueira, Nilton Maciel

doi:10.1007/s10103-022-03565-5

Cited by 4 publications

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“…Our results corroborate many studies [ 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 ] that report an improvement in gait after the application of LLLT in crush injury of the sciatic nerve. However, different parameters were used concerning the wavelength (660, 685, 808, 830, and 1064 nm) and mainly the energy density (3, 4, 10, 35, 40, 50, 70, 80, 133, 140, and 280 J/cm 2 ).…”

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confidence: 91%

Effects of Low-Level Laser Therapy and Purified Natural Latex (Hevea brasiliensis) Protein on Injured Sciatic Nerve in Rodents: Morpho-Functional Analysis

Dias,

Cury,

Dias

et al. 2023

IJMS

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The present study analyzed the effects of low-level laser therapy (LLLT) and the purified natural latex protein (Hevea brasiliensis, F1 protein) on the morpho-function of sciatic nerve crush injuries in rats. One-hundred and eight male Wistar rats were randomly allocated to six groups (n = 18): 1. Control; 2. Exposed (nerve exposed); 3. Injury (injured nerve without treatment); 4. LLLT (injured nerve irradiated with LLLT (15 J/cm2, 780 nm)); 5. F1 (injured nerve treated with F1 protein (0.1%)); and 6. LLLT + F1 (injured nerve treated with LLLT and F1). On the 1st, 7th, 14th, and 56th days after injury, a functional sensory analysis of mechanical allodynia and mechanical hyperalgesia and a motor analysis of grip strength and gait were performed. After 3, 15, and 57 days, the animals were euthanized for morphometric/ultrastructural analyses. The treatments applied revealed improvements in morphometric/ultrastructural parameters compared to the injured group. Sensory analyses suggested that the improvements observed were associated with time progression and not influenced by the treatments. Motor analyses revealed significant improvements in grip strength from the 7th day in the LLLT group and in gait from the 56th day in all treated groups. We concluded that even though the morphological analyses showed improvements with the treatments, they did not influence sensory recovery, and LLLT improved motor recovery.

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