Automated method and not automated: the evaluation of hematological parameters of rats

O objetivo deste trabalho foi verificar em sangue de rato a compatibilidade entre a metodologia automatizada e a não automatizada. Foram realizadas contagens das variáveis hematológicas de 10 ratos Wistar, Rattus norvegicus. Para o método automatizado foram utilizados os aparelhos ABX-Pentra-60c+ e Celldyn-3200. Para o método não automatizado foi utilizado o hemocitômetro nas contagens de eritrócitos, de leucócitos e de plaquetas, utilizando o líquido de Hayem (1:200), o líquido de Türk (1:20) e o líquido de Brecher e Cronkite (1:200), respectivamente. A determinação do hematócrito foi obtida utilizando-se uma centrífuga de micro-hematócrito, a concentração de hemoglobina pelo método de cianometa-hemoglobina (líquido de Drabkin) e os índices hematimétricos absolutos calculados através dos resultados da série vermelha. A contagem diferencial de leucócitos foi realizada em extensões de sangue (panótico rápido). Os dados foram analisados através da variância ­ ANOVA, seguida pelo teste Tukey, com nível de significância de 5%. Os valores obtidos pelo hemocitômetro comparadas aos contadores hematológicos mostraram diferenças significativas (p < 0,05) para neutrófilos, eosinófilos e basófilos. Os resultados permitiram concluir que as contagens realizadas com os aparelhos utilizados foram confiáveis e rápidas, mas não são indicadas para a contagem diferencial de leucócito.

The aim of this study was to verify blood compatibility between automated and non-automated methodology in rats. Counts of haematological variables of 10 Wistar rat, Rattus norvegicus were made. For the automated method were used the ABX-Pentra-60c + equipment and Celldyn-3200. For non-automated method the hemocytometer was used to count the erythrocytes, leukocytes and platelets using the Hayem liquid (1: 200), the Türk liquid (1:20) and the Brecher and Cronkite liquid (1: 200), respectively. The determination of the hematocrit was obtained by using a microhematocrit centrifuge, hemoglobin concentration by cyanmethaemoglobin method (Drabkin liquid) and absolute RBC indices calculated by the results of red series. The differential leukocyte count was performed on blood extensions (fast Panotic). The data was analyzed through variance ­ ANOVA and then by Tukey test at 5% significance level. The values obtained by hemocytometer compared to hematological counters revealed significant differences (p < 0.05) for neutrophils, eosinophils and basophils. Through the results obtained, it was concluded that the counts made with the devices used were reliable and fast, but are not indicated for the differential count of white blood cell.

The effects of topical application of sunflower-seed oil on open wound healing in lambs

PURPOSE: To demonstrate the effects of the use of sunflower seed oil on the treatment of skin wounds. METHODS: Eighteen male Saint Inês lambs were divided in 3 groups according to the pos-operative (7, 14 and 21 days). After antisepsis and local anestesia, two 4cm2 wounds on each side of the thoracic region, close to the scapule were surgically produced. The experimental wounds were treated with sunflower seed oil, with high concentration of linoleic acid (LA), and the control ones with sterilized Vaseline. Biopsies of the pos-operative wounds tissue were performed on the 7th, 14th, 21st days and histologically evaluated. RESULTS: Topic application of sunflower seed oil accelerated healing process at the 7th and 21st days, reducing wound area and increasing wound contraction. Granulation tissue increased faster on treated wounds. The epidermis of the treated wounds was completely recovered when compared to control wounds. CONCLUSION: The topic use of sunflower seed oil accelerated the healing process, and it can be used as an alternative therapy on second intention wound healing.

Anatomical aspects of the placenta of the sloth, Bradypus variegatus, Schinz, 1825

Sloth plows euterians mammals, belonging to the order Edentata, sub-order Xenarthra, infra-order Tardigrada, family Bradipodidae, which comprehend three specimen, Bradypus tridadctylus, Bradypus variegates and Bradypus torquatus. They plows few work found in the literature related to the anatomy of the placenta of this specimen. The material used in this research was consisted of 3 placentas of Bradypus variegatus of adult females (Briton, 1941) original of the Forests of the City of Recife and Zone of the Forest of the State of Pernambuco with average weight 4,2 Kg. Placentas were fixed in buffered glutaraldehyed 4 per cent, pH 7,4, 0,1M and processed goes optical microscopy. Macroscopically was observed that the placenta of the sloth is composed of discoidal lobes and had the fundal position of the uterine cavity. The fetal membranes identified were chorium, applied on the uterine surface and, amnion adherent to inner face of chorium. In the specimen examined presented vestige of allantois sack and vitelline sack in these gestational phase. Anatomically, placenta of Bradypus variegatus could be classified like chorium-amniotic. Microscopic analysis of the placenta showed endothelial cells of maternal vessel hypertrophied and fetal components without cellular limits identified. The fetal tissue presented an epithelioid aspect with fetal vessel surrounded to connective tissue and epithelioid cells or next to maternal vessel. According our description, Placenta of Bradypus variegatus could be classified microscopically in syndesmochorial and endotheliochorial