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Healing activity of laser InGaAlP (660nm) in rats / Atividade cicatrizante do laser AlGaInP (660nm) em ratos
Tacon, Kelly Cristina Borges; Santos, Hugo Campos Oliveira; Parente, Leila Maria Leal; Cunha, Luiz Carlos da; Lino-Júnior, Ruy de Souza; Ribeiro-Rotta, Rejane Faria; Tacon, Fernanda Sardinha de Abreu; Amaral, Waldemar Naves do.
  • Tacon, Kelly Cristina Borges; UFG. Goiania. BR
  • Santos, Hugo Campos Oliveira; UFG. Department of Toxicology. Goiania. BR
  • Parente, Leila Maria Leal; UFG. Veterinary School. Department of Pathology. Goiania. BR
  • Cunha, Luiz Carlos da; UFG. Pharmacy School. Department of Toxicology. Goiania. BR
  • Lino-Júnior, Ruy de Souza; UFG. Institute of Tropical Pathology and Public Health. General Pathology Department. Goiania. BR
  • Ribeiro-Rotta, Rejane Faria; UFG. School of Dentistry. Department of Oral Medicine. Goiania. BR
  • Tacon, Fernanda Sardinha de Abreu; PUC. Pharmacy School. Pharmacology Department. Goiania. BR
  • Amaral, Waldemar Naves do; UFG. Clinics Hospital. Department of Gynecology and Obstetrics. Goiania. BR
Acta cir. bras ; 26(5): 373-378, Sept.-Oct. 2011. ilus, graf, tab
Article in English | LILACS | ID: lil-599639
ABSTRACT
PURPOSE: To evaluate the effect the healing activity of diode laser Indium Gallium Aluminum Phosphorus (InGaAlP) ë660nm on healing of surgical wounds in rats. METHODS: Fifty-four female Wistar rats were used, divided into three groups (n=18) and subdivided into three subgroups (n=6) to be studied in 5, 10 and 15th days after surgical procedures. The wound was induced in the dorsal-cervical using punch. The lesions were irradiated on alternate days with InGaAlP laser, the energy densities of 3J/cm² (L3) or 6J/cm² (L6). The control group received no irradiation. At 5, 10 and 15th days after surgery the animals were euthanized and the repair area was removed and histological sections were stained with hematoxylin-eosin and picrossírius. We evaluated macroscopic and histological lesions in the times cited, as well as morphometric analysis of angiogenesis and collagen content. RESULTS: The wound healing activity InGaAlP laser was evidenced by increased angiogenesis group L3 and L6 in relation to control group (CG) at the 5th day (p=0.0001) and decreased polymorphonuclear infiltrate and hemorrhage (p=0.045 and p=0.07 respectively) in the groups L3 and L6 in relation to control group (GC). On the 10 and 15th days was also observed in groups treated with laser L3 and L6 stimulation was pronounced fibroplasia (p=0.0003 and p=0.034 respectively) when compared with the control group (CG). CONCLUSION: The InGaAlP laser acted positively on the healing of skin wounds in rats.
RESUMO
OBJETIVO: Avaliar a atividade cicatrizante do laser diodo Alumínio Gálio Índio Fósforo (AlGaInP), ë660nm em feridas cutâneas induzida em ratos. MÉTODOS: Foram utilizados 54 ratos Wistar, fêmeas, divididos em três grupos (n=18) e subdivididos em três subgrupos (n=6) animais para serem estudados no 5, 10 e 15º dias após o procedimento cirúrgico. A ferida foi induzida em região dorso-cervical utilizando punch. As lesões foram irradiadas em dias alternados com laser AlGaInP, nas densidades de energia de 3J/cm² (L3) ou 6J/cm²(L6). O grupo controle não recebeu irradiação. No 5,10 e 15º dia após o procedimento cirúrgico os animais foram eutanasiados e a área de reparo foi removida e os cortes histológicos foram corados com hematoxilina-eosina e picrossírius. Foram avaliados aspectos macroscópicos e histológicos das lesões nos tempos citados, bem como análises morfométricas da angiogênese e do conteúdo de colágeno. RESULTADOS: A atividade cicatrizante do laser AlGaInP foi evidenciada pelo aumento da angiogênese do grupo L3 e L6 em relação ao grupo controle (GC) no 5º dia (p=0,0001) e diminuição do infiltrado de polimorfonucleares e hemorragia (p=0,045 e p=0,007 respectivamente) dos grupos L3 e L6 em relação ao controle. No 10 e 15ºdias observou-se também que nos grupos tratados com laser L3 e L6 houve estimulo acentuado a fibroplasia(p=0,0003 e p=0,034 respectivamente), quando comparados ao grupo controle (GC). CONCLUSÃO: O laser AlGaInP atuou de forma positiva sobre a cicatrização de feridas cutâneas em ratos.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Skin / Wound Healing / Low-Level Light Therapy / Lasers, Semiconductor Type of study: Evaluation studies Limits: Animals Language: English Journal: Acta cir. bras Journal subject: General Surgery / Procedimentos Cir£rgicos Operat¢rios Year: 2011 Type: Article Affiliation country: Brazil Institution/Affiliation country: PUC/BR / UFG/BR

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Full text: Available Index: LILACS (Americas) Main subject: Skin / Wound Healing / Low-Level Light Therapy / Lasers, Semiconductor Type of study: Evaluation studies Limits: Animals Language: English Journal: Acta cir. bras Journal subject: General Surgery / Procedimentos Cir£rgicos Operat¢rios Year: 2011 Type: Article Affiliation country: Brazil Institution/Affiliation country: PUC/BR / UFG/BR