Topical action of Buriti oil (Mauritia flexuosa L) in myositis induced in rats

Abstract Purpose: To analyze the topical effects of Buriti oil (Mauritia flexuosa L.) in induced myositis in rats. Methods: Thirty six male rats divided into three groups: Control group (C), induced myositis group (MI) and induced myositis group reated with Mauritia flexuosa L. (MT). After inducing myositis with 1% acetic acid, was topically applied 0.5 ml of Mauritia flexuosa L.extract on the posterior region of the right gastrocnemius muscle in animals belonging to group MT, for 7 and 14 days. Results: The neutrophil number there was statistically significant difference, after 7 and 14 days, between groups C and MI (p <0.001) (p<0.01). The group MT there was a significant difference in relation to MI group in both experimental times with (p<0.001). The number of fibroblasts in the 14 days showed that when comparing the groups M and MT the differences were also significant (p<0.001). As for the DLL, in 7 days, there was a significant difference between group C and MI group (p <0.001). When considering the MT group, there was a significant difference in relation to the MI group (p <0.001). Conclusion: The extract of Mauritia flexuosa L. leaves lessened acute and chronic inflammation, increased fibroblast proliferation and reduced macroscopically edema.

Low-level laser therapy and Calendula officinalis in repairing diabetic foot ulcers / Terapia con láser de baja intensidad y Calendula officinalis en la reparación de úlcera en pie diabético / Terapia a laser de baixa intensidade e Calendula officinalis no reparo de úlcera em pé diabético

Abstract OBJECTIVE To evaluate the effects of low-level laser therapy isolated and associated with Calendula officinalis oil in treating diabetic foot ulcers. METHOD An experimental, randomized, controlled, prospective, interventional clinical case study using a quantitative approach. The sample consisted of 32 diabetic patients of both genders. Participants were randomly divided into four groups. Doppler Ultrasound evaluation of the Ankle-Brachial Index, brief pain inventory and analog pain scale were performed at baseline and after 30 days. RESULTS Reduced pain was observed in the Low-level laser therapy and Low-level laser therapy associated with Essential Fatty Acids groups (p<0.01). Regarding the Ankle-Brachial Index and Doppler Ultrasound, all groups remained stable. By analyzing lesion area reduction, Low-level laser therapy associated with Essential fatty acids group showed a significance of p=0.0032, and the Low-level laser therapy group showed p=0.0428. CONCLUSION Low-level laser therapy, performed alone or associated with the Calendula officinalis oil was effective in relieving pain and accelerating the tissue repair process of diabetic foot.

Resumen OBJETIVO Evaluar los efectos de la Terapia con Láser de Baja Intensidad aislada y asociada con el aceite de Calendula officinalis en la reparación de úlceras en pie diabético. MÉTODO Estudio de caso clínico, experimental, controlado, randomizado, prospectivo, intervencionista, de carácter cuantitativo. La muestra estuvo compuesta de 32 pacientes diabéticos, de ambos géneros. Los participantes fueron distribuidos aleatoriamente en cuatro grupos. Ecografía Doppler, evaluación del Índice Tobillo-Brazo, Inventario breve de dolor y escala visual analógica fueron realizados al inicio y después de 30 días. RESULTADOS Hubo reducción del dolor en los grupos Terapia con Láser de Baja Intensidad y Terapia con Láser de Baja intensidad asociada con los Ácidos Grasos Esenciales, con p<;0,01. En cuanto al Índice Tobillo-Brazo y la Ecografía Doppler, todos los grupos se mantuvieron estables. En el análisis de la reducción del área de la lesión, el grupo Terapia con Láser de Baja Intensidad asociada con los Ácidos Grasos Esenciales presentó una significación p=0,0032, y el grupo Terapia con Láser de Baja Intensidad, p=0,0428. CONCLUSIÓN La Terapia con Láser de Baja Intensidad, llevada a cabo tanto aisladamente como asociada con el aceite de Calendula officinalis, fue eficaz en el alivio del dolor y la aceleración del proceso de reparación de tejidos del pie diabético.

Resumo OBJETIVO Avaliar os efeitos da Terapia a Laser de Baixa Intensidade isolada e associada ao óleo de Calendula officinalis no reparo de úlceras em pé diabético. MÉTODO Estudo de caso clínico, experimental, controlado, randomizado, prospectivo, intervencional, de caráter quantitativo. A amostra foi composta de 32 pacientes diabéticos, de ambos os gêneros. Os participantes foram distribuídos aleatoriamente em quatro grupos. Ultrassom Doppler, avaliação do Índice Tornozelo-Braquial, Inventário breve de dor e escala de dor analógica foram realizados no início e após 30 dias. RESULTADOS Houve redução da dor nos grupos Terapia a Laser de Baixa Intensidade e Terapia a Laser de Baixa intensidade associada aos Ácidos Graxos Essenciais, com p<0,01. Quanto ao Índice Tornozelo-Braquial e Ultrassom Doppler, todos os grupos mantiveram-se estáveis. Na análise da redução de área da lesão, o grupo Terapia a Laser de Baixa Intensidade associada aos Ácidos Graxos Essenciais apresentou uma significância p=0,0032, e o grupo Terapia a Laser de Baixa Intensidade, p=0,0428. CONCLUSÃO A Terapia a Laser de Baixa Intensidade, realizada tanto isoladamente quanto associada ao óleo de Calendula officinalis, foi eficaz no alívio da dor e na aceleração do processo de reparo tecidual de pé diabético.

The low-level laser on acute myositis in rats

ABSTRACT PURPOSE: To analyze the effects of the low-level laser therapy in the acute myositis induced in rats. METHODS: Twelve rats were subjected to bilateral ovariectomy for inducing osteoporosis. After surgery, they were divided into two groups: Ovariectomy-control group (G1, n=6), receiving 0.5 ml distilled water by gavage for 30 days, and Ovariectomy plus mastruz group (G2, n=6), receiving 0.5 ml of the hydroalcoholic extract of mastruz at 10% concentration (50mg) daily, for the same period. Then, the blood of the animals was collected for further biochemical analysis (liver function) and tibia and liver were removed for histological and histomorphometric analyses. RESULTS: In the MT group there was a statistic significant decrease in the number of inflammatory cells, related to the MI group (p<0.05), increase in the fibroblastic proliferation, when compared to groups C and MI related to MT group (p<0.01) and statistic significant edema regression (p=0.0400) in the MT group CONCLUSION: The low-level laser therapy was efficient in the reduction of the inflammatory process, increase of the fibroblastic proliferation and the reduction of the edema.

Biomodulation effects of LED and therapeutic ultrasound combined with semipermeable dressing in the repair process of cutaneous lesions in rats

PURPOSE: To compare the biomodulatory effects of LED and ultrasound combined with semipermeable dressing in the repair of cutaneous lesions. METHODS: Eighty-four Wistar rats were submitted to surgical injury (2.5 cm) and divided into four groups (n=21): Group I (control), Group II (LED therapy, LED), Group III (LED therapy + dressing, LED+D) and Group IV (ultrasound + dressing, US+D). At seven, 14 and 21 days, the animals were euthanized, and the specimens of interest removed for histological analysis. RESULTS: Histological and histomorphometric analysis revealed a greater percent wound regression in animals receiving the dressing (group III: 55.97; group IV: 53.06), as well as a greater reduction in the inflammatory infiltrate (group III: 29.14; group IV: 31.71) since day 7. A later effect, with progression of the tissue repair process only after 14 and 21 days, was observed in the LED group intense fibroblast proliferation and greater collagen fiber production and organization were seen in the LED+D and US+D groups compared to the other groups. CONCLUSION: LED combined with a dressing was more effective at accelerating in the repair of cutaneous lesions. .

FT-Raman spectroscopic study of skin wound healing in diabetic rats treated with Cenostigma macrophyllum Tul

INTRODUCTION: Patients with diabetes mellitus exhibit a delay in the lesion repair process. The active components of Cenostigma macrophyllum may represent a viable alternative to facilitate the recovery of these lesions. The aim of this study was to evaluate the effects of emulsion oil-water Cenostigma macrophyllum in the repair process of lesions in rats with induced diabetes. METHODS: 63 male rats (Wistar, 200-250 g body weight, 30-40 days old) were distributed into the following groups: control (C), diabetic (D) and diabetic treated with Cenostigma macrophyllum (P), subdivided based on the experimental times, days 7, 14 and 28, with 21 animals per main group. Diabetes mellitus (DM) was induced by administration of streptozotocin (50 mg/kg via penile vein and 12-h fasting) and confirmed at day 21 (glycemic index > 240 mg/dL). In the animals of group P, 0.5 ml of the oil-water emulsion obtained from the plant seed was used. The samples were removed and hemisectioned, and one portion was used for the quantitative histological analysis of collagen using Masson's trichrome staining, while another portion was analyzed by FT-Raman spectroscopy. RESULTS: A higher percentage area of the volume of collagen fibers was observed for the experimental time Day 14 in group P compared with group D (p < 0.001). Regarding the ratio of areas of the amides I (1700‑1600 cm-1) and III (1245-1345 cm-1), the groups D and P show the opposite behavior. CONCLUSION: Cenostigma macrophyllum accelerated the repair process in skin of diabetic ratsfor14 days.

Cenostigma macrophyllum Tul. on the healing of skin wounds in rats with Diabetes mellitus

PURPOSE: To investigate the effect of Cenostigma macrophyllum Tul. in the tissue repair process of skin lesions in rats with induced Diabetes mellitus. METHODS: Sixty-three male Wistar rats were distributed into three groups: control (C), diabetic (D), and diabetic treated with an oil-in-water emulsion of the plant (DPL) subdivided according to time of observation (seven, 14, and 28 days). Diabetes was induced by administration of by injection of streptozotocin (50 mg/kg, after a 12-h fast) into the penile vein and confirmed by glucose levels exceeding 240 mg/dL. Held surgical lesion (2.5 cm in diameter) on the back of the animals. The DPL received topical application of group of the oil-in-water emulsion plant (0.5ml). To evaluate the levels of nitric oxide, was collected 5ml of blood from the abdominal aorta, after his euthanasia. The samples of interest were sent for routine histological processing. RESULTS:A reduction in the percentage of inflammatory cells and increased numbers of fibroblasts in the group DPL, seven days, compared to the other groups. At 14 days, the DPL group also showed a higher concentration of nitric oxide (p<0.01) than in groups C and D. CONCLUSION: The oil-in-water emulsion of C. macrophyllum Tul accelerated wound healing in diabetic rats.