Deila Rosély Schossler

Syzygium cumini and the regeneration of insulin positive cells from the pancreatic duct

Syzygium cumini is a plant that has been used in popular medicine for the treatment of insulin dependent diabetes mellitus (DMID). This study verified the effect of Syzygium cumini upon the regeneration of insulin producing cells in the pancreatic duct wall. The animals were divided into four groups, control (C), treated control (TC), diabetic control (DC) and treated diabetic (TD). An aqueous extract from Syzygium cumini bark was given by gavage in a daily dose of 1g/kg of body weight. After a thirty day period the animals were euthanized and the pancreas taken to immunohistochemical analysis. In this study, it was observed the positive staining for insulin on cells of the pancreatic duct and connective tissue in the pancreas of TD and TC animals. These results indicate that Syzygium cumini bark extract stimulates development of insulin positive cells from the pancreatic duct epithelial cells.

Extrato da casca de Syzygium cumini no controle da glicemia e estresse oxidativo de ratos normais e diabéticos

The plant Syzygium cumini, also known as Black Plum is used widely in the popular medicine for the treatment of diabetes mellitus. This study verified the efficiency of the extract of the bark of Syzygium cumini on the glycemic levels and oxidative stress of normal and diabetic rats induced by alloxan. The animals were divided in control group (C), control treatment group (CT), diabetic control group (DC) and diabetic treatment group (DT). Oral administration of the aqueous extract of the bark of Syzygium cumini, in the dose of 1g/kg live weight, for a period of thirty days, did not result in a significant reduction on glycemia or on glucosilated hemoglobin levels. The treatment with the extract demonstrated an increase in the levels of thiobarbituric acid reactive substances (TBA-RS) in the plasma of the DT group (P <0.05), compared to the C. Kidney catalase activity of rats in DC group decreased significantly (P <0.01) and, in the liver, it showed a significant elevation in group DC (P <0.01). Those results indicated that the extract of Syzygium cumini bark does not possess hypoglycemic effect in alloxan diabetic induced rats. The antioxidant effect of this plant was not enough to reduce the production of TBA-RS significantly. The decrease of catalase activity in the kidneys can be owed to its exhaustion or inhibition, and its increase in the liver could be due to oxidative stress caused by the diabetic status.

Modificações do fixador externo para osteossíntese umeral em pombos domésticos

This paper was aimed at evaluating two changes in the external fixators for osteosynthesis of the humeral fracture that induce the correction of the humeral fracture in pigeons. The reduction of diaphyseal fracture was made with an intramedulary pin associated to another perpendicular one inserted into the distal segment (Group A - GA); in the Group B (GB) an additional pin was used in the proximal fragment. All the pigeons were evaluated clinically and radiographically up to 60 days, except for four of each group which were submitted to euthanasia at 15, 22, 29 and 36 days for the macro and microscope exams. The flight test was successful in all pigeons. The bone calus was radiografically visible only in the GA; the mean time and the standard deviation for flight was 32.25 ± 6.5 days for the GA and 39.8 ± 3.83 for the GB. The mean time and standard deviation for fracture healing was 36 ± 0 days in the GA and 34 ± 3.4 in the GB. The two types of external fixator evaluated were efficient to stabilized the fracture site allowing complete consolidation and return to function. The use of the external fixator with two perpendicular pins provides more stability at the fracture site although it is necessary more time for the surgery procedure.

Função renal de cães tratados com doses terapêuticas de flunixin meglumine e ketoprofen durante o trans e pós-operatório

It has been reported in the literature several clinical cases of renal failure after the use of flunixin meglumine in normal healthy dogs. Based on these reports this study was developed to evaluate the renal function of normal healthy dogs. Blood urea nitrogen (BUN) and serum creatinine were measured in four groups of 5 dogs submitted to a single surgical procedure. Two groups received flunixin meglumine and the other two ketoprofen, both in therapeutic dosages. The results showed values of BUN and serum creatinine within normal range for dogs. It is fair to conclude that flunixin meglumine and ketoprofen do not produce renal failure when administered during the peri-operative period in normal healthy dogs.

Avaliação funcional e histológica da tireoide de ovinos suplementados com fluoreto de sódio por um período de 150 dias

The effect of sodium fluoride administration on thyroid function and morphology in sheep was evaluated using 12 lambs. Animals were allotted in two groups: control that received 5g NaCl + 0.2ppm I/kg DM and treated which received the same treatment plus sodium fluoride (4.7mg F/kg BW), daily, for 150 days. Blood samples were collected for determination of F, I, T3, and T4. Urine production was collected for measurement of F and I. After euthanasia at 150 days of treatment, thyroid glands were removed for analysis. No differences were found between or within groups for urinary I. Also, no differences were found for T3 and T4 on serum I between groups or among time points. No histological alterations were found in the thyroids. In conclusion, chronic sodium fluoride treatment did not affect thyroid function and morphology in lambs.

Alterações histológicas e imunoistoquímicas em pâncreas de ratos normais e diabéticos tratados com Syzygium cumini

This study verified the effect of Syzygium cumini bark extract on the pancreas of normal and diabetic rats. The animals were allocated into four groups, control (C), treated control (TC), diabetic control (DC) and treated diabetic (TD). An aqueous extract from Syzygium cumini bark, was given by gavage in a daily dose of 1g kg-1 of body weight. After a thirty day period, the animals were euthanized and the pancreas taken to imunno-histochemical analysis. A significant decrease in the number and size of islets, citoarchitectural alterations, as well as a severe decrease in the number of positive cells in diabetic animals (p<0.0001) was observed. However, was noticed a no significant difference neither between DC and DT nor C and CT groups. These results indicate that the Syzygium cumini bark extract does not affect significantly the number, size and citoarchitecture of islets, and, it also does not lead to an increase in b cell number in animals treated with the plant extract.

Avaliação clínica e enzimática de cães com hepatite tóxica aguda tratados pela silimarina

Neste experimento foi utilizado o tetracloreto de carbono como agente experimental de producao de hepatite toxicaaguda e posterior tratamento pela silimarina. Foram utilizados tres grupos de cinco caes, sendo todos intoxicados pelotetracloreto de carbono na dose de 0,5ml/kg, dos quais, os grupos 11 e 111 foram tratados pela silimarina, na dose de 4mg/kg/24hs e 8mg/kg/24hs, respectivamente, durante 15 dias. Observou-se o estado clinico e sensibilidade hepatica dosanimais, bem como foram mensuradas a ALT e FA, 24 horas antes do inicio do experimento e posteriormente emintervalos de 48 horas, durante 15 dias. Todos os animais apresentaram inapetencia inicial e diarreia com estrias desangue, normalizando-se apos 24 horas. A sensibilidade hepatica foi de menor intensidade nos grupos li e 111. A ALT eFA mostraram-se aumentadas em todos os animais, atingindo 307,5 e 8,5 vezes, respectivamente, os valores normais,sendo que a ALT apresentou-se menor nos animais tratados. Diante disto, conclui-se que a silimarina e capaz dediminuir os niveis de ALT, em animais intoxicados pelo tetracloreto de carbono, indicando um efeito regenerado r hepatico,nao havendo diferenca significativa entre as doses empregadas nos animais tratados.