ABSTRACT
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.
ABSTRACT
O objetivo deste trabalho foi verificar as alterações morfológicas nas glândulas parótidas de ratos expostos à fumaça de cigarro por meio da análise histomorfométrica dos ácinos serosos. Foram utilizados 14 ratos Wistar, machos, divididos em dois grupos. Os animais do grupo experimental foram expostos à queima de 4 cigarros por cerca de 30 minutos, duas vezes ao dia, seis dias por semana durante 60 dias consecutivos. Os animais do grupo controle não foram expostos à fumaça de cigarro. A análise estatística dos dados demonstrou que a área dos ácinos serosos dos animais do grupo controle foi significativamente superior.
The aim of this study was to determine the morphological changes in the parotid glands of rats exposed to cigarette smoke by histomorphometric analysis of serous acini. 14 male Wistar rats were divided into two groups were used. The animals of the experimental group were exposed to burning cigarettes 04 for about 30 minutes twice a day, six days a week over a period of 60 consecutive days. The control group were not exposed to cigarette smoke. Statistical analysis of the data showed that the area of the serous acini of the control group was significantly higher.
Subject(s)
Parotid Gland , Rats , Tobacco Products , Smoking DevicesABSTRACT
Introdução: O processo de cicatrização é uma sequência de reações para reconstituir o tecido. O bacurizeiro (Platonia insignis Mart.) é nativo da Amazônia e é usado como cicatrizante e antibiótico. Objetivo: Analisar a cicatrização de feridas cutâneas tratadas com a banha de bacuri. Metodologia: Utilizaram-se 46 ratos Wistar, machos. Confeccionou-se uma ferida de 2 cm de diâmetro no dorso dos animais e em seguida foram distribuídos em dois grupos: controle e tratado com banha de bacuri. Foram avaliados no 4º, 7º e 14º dias do pós-operatório. Resultados: A inflamação aguda reduziu a partir do sétimo dia nos dois grupos, sendo mais evidente no grupo experimental. No quarto dia, ambos os grupos não mostraram reepitelização, já no sétimo, os animais tratados com a banha demonstraram reepitelização considerável. Conclusão: A banha de bacuri foi eficiente no sétimo dia de tratamento. Os ácidos graxos presentes nessa substância favorecem o processo cicatricial.
Introduction: The healing process is a sequence of reactions to restore tissue continuity occurs. The bacuri tree (Platonia insignis Mart.) is native to the Amazon, use like antimicrobial and healing action. Objective: To analyze the healing of open wounds and treated with bacuri cream. Methods: We used 46 male Wistar rats. We made up a two-centimeter-diameter wound on the dorsum of all animals which were divided into two groups: the control group and treated and assessed at 4, 7 and 14 days post-operatively. Results: Acute inflammation reduced from seven days in both groups, although it had been more evident in the group treated with the cream. At fourth days both groups did not show any re-epithelialization, the animals treated with the cream on the seventh day showed considerable re-epithelialization. Conclusion: The bacuri cream was effective on the seventh day. The fatty acids present in this substance favor the healing process.