Analysis of the healing process of the wounds occurring in rats using lasertherapy in association with hydrocolloid

Martins, Shirley Santos; Torres, Orlando Jorge Martins; Santos, Orlando José dos; Limeira Júnior, Francisco de Assis; Sauaia Filho, Euler Nicolau; Melo, Syomara Pereira da Costa; Santos, Rayan Haquim Pinheiro; Silva, Vivian Brito

doi:10.1590/S0102-865020150100000005

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Acta Cirúrgica Brasileira

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Sumário

Original Articles • Acta Cir. Bras. 30 (10) • Oct 2015 • https://doi.org/10.1590/S0102-865020150100000005 copy

Analysis of the healing process of the wounds occurring in rats using lasertherapy in association with hydrocolloid¹ 1 Research performed at Laboratório da Liga Acadêmica de Cirurgia Experimental do Maranhão (LAB-LACEMA), Department of Medicine II, ILA, School of Medicine, Universidade Federal do Maranhão (UFMA), Sao Luis-MA, Brazil.

Authorship SCIMAGO INSTITUTIONS RANKINGS

PURPOSE:

To evaluate wound healing in rats by using low-level laser therapy (LLLT) associated with hydrocolloid occlusive dressing

. METHODS:

Forty male, adult, Wistar rats were used, distributed into four groups: LG (received 2 J/cm² of laser therapy); HG (treated with hydrocolloid); LHG (treated with 2 J/cm² of laser therapy and hydrocolloid); and the CG (treated with 1 mL of 0.9% saline). The wound was evaluated at pre-determined periods 3rd and 7th days, considering the macroscopic and histological parameters (inflammatory cells, capillary neoformation, fibroblasts, collagen formation and reepithelialization).

RESULTS:

The LG group at seven days showed increased collagen formation, the LHG group at 3 days showed mild collagen formation. The HG group and the CG at 7 days showed complete reepithelialization.

CONCLUSION:

Low-level laser therapy as well as the hydrocolloid dressing have favored the wound-healing process in rats.

Wound Healing; Laser Therapy; Low-Level; Rats

Group - Day	Mean	Tukey
GH - 3	0.72 ± 0.002	a
GL - 3	0.7 ± 0.00	a
GC - 3	0.7 ± 0.00	a
GLH -3	0.7 ± 0.00	a
GH - 7	0.60 ± 0.00	a *
GL - 7	0.50 ± 0.00	b
GC - 7	0.42 ± 0.05	c *
GC - 7	0.50 ± 0.07	b

Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia https://actacirbras.com.br/ - São Paulo - SP - Brazil
E-mail: actacirbras@gmail.com

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[1] Correspondence:Orlando José dos Santos Departamento de Medicina II, ILA Faculdade de Medicina, Universidade Federal do Maranhão Avenida Gonçalves Dias, 21 65020-240 São Luis-MA Brasilorlanddojs@hotmail.com

		Group
Day	Findings	HG	LG	CG	LHG
	Inflammation	Acute	Acute	Acute	Acute
	Fibroblast proliferation	Discrete	Discrete	Discrete	Discrete
3	Collagenization	Absent	Absent	Absent	Discrete
	Reepithelization	Absent	Absent	Parcial^a	Absent^b
	Neovascularization	Discrete^b	Discrete^b	Absent^a	Discrete^b

	Inflammation	Chronic	Chronic	Acute	Acute
	Fibroblast proliferation	Moderate	Moderate	Moderate	Moderate
7	Collagenization	Discrete^b	Accented^a	Discrete^b	Discrete^b
	Reepithelization	Completeª	Partial	Completeª	Partial
	Neovascularization	Moderate	Discrete^a	Moderate	Moderate