Topical treatment with Copaifera langsdorffii oleoresin improves wound healing in rats

Copaifera langsdorffii oleoresin (copaiba) has been used in the Amazon as traditional wound healing remedy for centuries. Since its mechanisms of action remain unclear, we investigated its effects on excisional wounds in rats. Wounds were made on the dorsum of animals assigned to three groups: saline, control cream and 10% copaiba cream, and assessed on days 2, 7 and 14 post-wounding morphometrically, histologically and biochemically. Wound healing rate was faster in copaiba than in saline or cream groups. This was corroborated by matrix metalloproteinase (MMP)-2 activity which rose progressively throughout in copaiba group. MMP-9, a marker of inflammation, was not detectable at day 14 in copaiba group, but persisted in the other groups. Moreover, histology showed early population of copaiba-treated wounds by inflammatory cells, and by day 14 this group had less fibroblasts and more organized collagen. Further, copaiba group synthesized collagen faster than saline and cream groups, as evidenced by progressive increases in the amounts of hydroxyproline at days 7 and 14 (p < 0.012). These findings suggest that 10% copaiba oleoresin cream promotes wound healing in rats by regulating MMP-2 and MMP-9 activities, stimulating collagen synthesis and promoting tissue remodeling and reepithelialization

Fototerapia (LEDs 660/890nm) no tratamento de úlceras de perna em pacientes diabéticos: estudo de caso Phototherapy (LEDs 660/890nm) in the treatment of leg ulcers in diabetic patients: case study

Avaliou-se a fototerapia na cicatrização de úlceras de perna (UP) mistas em dois pacientes diabéticos (tipo 2), hipertensos. O aparelho apresentava sonda 1 (S1) (1 LED de 660nm, 5mW) aplicado em 3 UP e sonda 2 (S2) (32 LEDs de 890nm e 4 LEDs de 660nm, 500mW) em 6 UP. Após antissepsia,úlceras foram tratadas com sondas a 3J/cm2, 30seg, 2x/semana seguido pelo curativo diário com sulfadiazina de prata a 1% por 12 semanas. Pela análise com software Image J®, as UP com S2 tiveram índices de cicatrização médios de 0,6; 0,7 e 0,9 enquanto S1 foi de 0,2; 0,4 e 0,6 no 30º, 60º e 90º dias, respectivamente. A fototerapia acelerou a cicatrização das úlceras de perna em pacientes diabéticos.<br>This study evaluated the use of phototherapy in the healing of mixed leg ulcers in two diabetic patients (type 2) with arterial hypertension. The device had probe 1 (one 660nm LED, 5mW) applied in 3 ulcers and probe 2 (32 890nm LEDs associated with 4 660nm LEDs, 500mW) in 6 ulcers. After asepsis, ulcers were treated with probes to 3 J/cm2, 30sec per point, twice a week, followed by topical daily dressing with 1% silver sulphadiazine during 12 weeks. The following analyses of ulcers with software Image J showed that probe 2 presented mean healing rates of 0.6; 0.7 and 0.9, whereas probe 1 had 0.2;0.4 and 0.6 at 30, 60 and 90 days, espectively. Phototherapy accelerated wound healing of leg ulcers in diabetic patients