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Low-level laser therapy (LLLT) is known to enhance mitochondrial electron transfer and ATP production; thus, this study asked whether LLLT could stimulate the oxidative burst in human neutrophils (PMN) and improve their ability to kill microorganisms. Blood from healthy human subjects was collected and PMN were isolated from the samples. PMN were treated in vitro with 660 nm or 780 nm CW laser light at 40 mW power and increasing energies up to 19.2 J and were subsequently incubated with Candida albicans cells. Generation of hydroxyl radicals, hypochlorite anions and superoxide anions by PMN were checked using fluorescent probes and chemiluminescence assays; a microbicidal activity assay against C. albicans was also performed. LLLT excited PMN to a higher functional profile, which was translated as superior production of reactive oxygen species (ROS) and increased fungicidal capacity. The most efficacious energy was 19.2 J and, interestingly, the 660 nm light was even more efficacious than 780 nm at increasing the respiratory burst of PMN and the fungicidal capacity. Human neutrophils (PMN) were stimulated in vitro with 660 nm or 780 nm CW laser light at 40 mW of power and a total energy of 19.2 J. Low-level laser therapy (LLLT) excited PMN to a higher functional profile, which was translated as a superior production of reactive oxygen species (ROS) such as hydroxyl radicals (HO•) and hypochlorite anions (ClO−) (Figure) and increased fungicidal capacity against Candida albicans cells.

Objective: In this study, the effects of a green banana pasta diet on the oxidative damage from type 1 diabetes mellitus (DM) were investigated. Materials and methods: Formulations containing 25 (F25), 50 (F50), and 75% (F75) of green banana pasta were prepared and included in a 12-week diet of Wistar rats with alloxan-induced type 1 DM. The effects of these formulations in preventing oxidative damage in kidneys and liver homogenates of rats were evaluated using the TBARS assay (lipid peroxidation in liver) and the DNPH assay (protein oxidation in liver and kidneys). Furthermore, the effects of the formulations on the fasting glycemia, fructosamine levels, renal function (creatinine), liver function (enzymes aspartate aminotransferase [AST] and alanine aminotransferase [ALT]), and lipid profile (total cholesterol and fractions) in the serum of rats were evaluated in addition to the evaluation of the centesimal composition and microbiological analysis of the produced green banana pasta. Results: An F75 diet prevented hyperglycemia in diabetic rats (p < 0.05) compared to the diabetic rats fed a standard diet (commercial feed). Notably, the protein oxidation in both the liver and kidneys were prevented in diabetic rats on the F50 or F75 diets compared to the control group, whereas the lipid peroxidation was only prevented in the liver (p < 0.05). Moreover, all formulations prevented an increase in the amount of triglycerides in the serum of the rats. The F25 and F50 diet prevented the increase of cholesterol, and the F75-based diet of ALT and fructosamine (p < 0.05) supported the anti-hyperglycemic effects and the protection against oxidative damage. Conclusion: The green banana pasta (F75) diet showed great potential for preventing complications associated with diabetes. Arch Endocrinol Metab. 2016;60(4):355-66

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Diabetes Mellitus (DM) ainda representa um sério problema de saúde pública, carente de novas alternativas terapêuticas. Plantas estão entre as possíveis fontes de novos compostos com ação anti-hiperglicêmica ou servindo como fitoterápicos. Neste estudo, avaliou-se o efeito anti-hiperglicêmico do extrato etanólico das folhas de Raphanus sativus (nabo forrageiro) administrado por gavagem (dose oral de 300 mg/kg/dia) em ratos Wistar com DM tipo 1 induzido por aloxana, durante 90 dias. A efetividade deste tratamento em prevenir danos oxidativos hepáticos (avaliação de oxidação proteica), e ação sobre outros biomarcadores das funções hepática, renal e do perfil lipídico também foram avaliados. Após três meses de tratamento, os ratos diabéticos tratados com R. sativus tiveram uma marcante diminuição na glicemia de jejum, comparados aos ratos diabéticos não tratados (p < 0,05). Além disso, este tratamento preveniu tanto a oxidação proteica no fígado como o aumento dos níveis de triglicérides sérico (p < 0,05). Portanto, demonstrou-se um marcante efeito anti-hiperglicêmico de R. sativus (a uma baixa dose) e as extensivas ações em prevenir típicas complicações do DM, tais como os danos oxidativos e dislipidemia, demonstrando que esta planta apresenta um potencial terapêutico.