Abstract Purpose To evaluate the effect of Rut-bpy (Cis-[Ru(bpy)2(SO3)(NO)]PF 6), a novel nitric oxide donor, able to modulate the histological changes caused by the NASID (meloxicam). Methods Wistar rats were assigned into three groups (n=6 rats/group): Sham group (saline solution), NSAID group (meloxicam - 15 mg/kg) and Rut-bpy group (100 mg/kg of Rut-bpy associated with 15mg/kg of meloxicam). At the end of experiments, kidneys were removed for histological study, fractal dimension and lacunarity in all animals. Results At the histological examination, all animals (six animals – 100 %) in the NSAID group had membrane thickening and other changes (necrosis, acute tubular congestion and vascular congestion); on the other hand, only one animal (16.6 %) of the Rut-bpy group had congestion. The fractal dimension and lacunarity were greater in the control and Rut-bpy group than in NSAIDs group (p<0.05). Conclusion Rut-bpy may prevent renal histological changes in rats caused by meloxicam.

PURPOSE: To examine the effects of the oil mixes (ω-9, ω-6 and ω-3) in rats subjected to thermal burn. It was also aimed to assess whether the sources of ω3 would interfere with the effect of such mixes on the thermal injury.METHODS:Thirty-six rats distributed into five groups: burned + water, burned + isolipid mix, burned + oil mix 1 (ALA), burned + oil mix 2 (ALA + EPA + DHA of fish) and burned + oil mix 3 (ALA + DHA from seaweed). The thermal injury was involving total thickness of skin. After the burns animals received the oil mixes for seven days. The lesions were evaluated by immunohistochemistry.RESULTS:Animals receiving mix 3 showed a smaller extension of the thermal injury as compared to those that were supplemented with other oils mixes. Expression of Ki-67 in the receiving Mix 3 increased as compared to all the other groups. Animals supplemented with mix 3 were able to inhibit NF-κB in injured tissue.CONCLUSION:Rats received oil mix in which the source of ω3 (ALA+DHA of seaweed) showed inhibition of NF-κB, increase in cell proliferation, and reduction the extension of thermal lesion.

A mucinose follicular (MuF), também chamada de alopecia mucinosa, é mucinose cutânea caracterizada pelo acúmulo de mucina no folículo pilossebáceo. As mucinoses têm duas formas de apresentação: uma idiopática ou primária, e outra sintomática ou associada a diversos processos benignos e malignos. Os autores apresentam um caso de mucinose folicular primária e fazem breve revisão do assunto. Trata-se de uma paciente de 26 anos de idade, com placa eritematosa recoberta por fina descamação, alopécica e localizada no supercílio direito. Após seis meses, sem qualquer tratamento, houve resolução espontânea da lesão. A paciente permaneceu durante 12 meses em controle ambulatorial sem que se evidenciasse qualquer sinal de recidiva.

Follicular mucinosis, also known as alopecia mucinosa, is a cutaneous mucinosis characterized by mucin accumulation predominantly in the pilosebaceous follicle. Two forms are distinguished: an idiopathic, or primary form, which is benign and without associated disease, and a symptomatic form associated with lymphoproliferative disorder, most commonly the cutaneous T-cell lymphoma mycosis fungoides. The authors present a new case of the disease and a brief review of the literature. The patient was a 26-year-old female with an asymptomatic plaque of erythema and scaling with alopecia on her right eyebrow. The lesion resolved spontaneously six months later. We have followed the patient over twelve months without relapse.