Effect of superoxide dismutase from bovine erithrocytes on different activity parameters in Ajuvant-Induced arthritis

Background. The purpose of this work was to evaluate the effect of superoxide dismutase (SOD) on primary swelling, lipoperoxidation, body thymus, and spleen weight in the adjuvants-induced arthritis (AIA) model in rats. Methods. Orally and intraperitoneally administered SOD (100 U/kg) from bovine erythrocytes, as well as naproxen (40 mg/kg) and dexamethasone (25 mg/kg), were evaluated againts placebo. Results. Primary edema was not decreased by SOD; in contrast, naproxen and dexamethasone showed good anti-inflammatory activity. Lipoperoxidation increased 1.8, 2.5, and 2.8 times with intraperitoneal SOD, naproxen, and dexamethasone administration, respectively, while oral SOD decreased lipoperoxidation levels to approximately one-half of that found in the control group. Body weight increased with SOD but decreased with dexamethasone. Naproxen did not change the animal weight. Thymus weight remained unchanged with SOD and naproxen, while it decreased with dezamethasone. Splee weight remained the same wih SOD, but increased with naproxen and decreased with dezamethasone. No side of gastrointestinal hemorrhage, and 50 percent of the rats in the dexamethasone group, of pulmonary infection. Conclusions. In conclusion, SOD showed no anti-inflammatory activity but decreased lipoperoxidation when administered orally. No deleterious effects in primary and secondary immunologic organs were observed with this agent

Effects of a vegetarian diet vs. a vegetarian diet enriched with avocado in hypercholesterolemic patients

To determine the effects of a vegetarian diet with avocado as a source of monounsaturated fat on serum lipids, thirteen patients with phenotype II (twelve with IIa and one with IIb) dyslidipidemia were included in a prospective, transversal and comparative study in chich three four-week diets randomly assigned were assessed. One vegetarian diet (ALVD) was composed of 70 percent carbohydrates, 10 percent proteins and 20 percent lipids. another was composed of 60 percent carbohydrates, 10 percent proteins and 30 percent lipids, 75 percent of which was supplied by avocado (AVD). A third diet was an avocado-added free diet (FDWA). Body wight, body mass index (BMI), and serum lipids (total cholesterol (TC), high (HDL) and low density lipoprotein (LDL) cholesterol and triglycerides (TG) were evaluated. AVD produced a significant decrease in LDL. ALVD did not change TC and LDL, while FDWA increased them slightly. The three diets reduced TG levels, but only ALVD did so significantly. All three diets reduced HDL levels, particularly ALDV, which produced the greatest reduction. Low-fat carbohydrate-rich vegetarian diets may be harmful to hypercholesterolemic patients. The avocado addition to a vegetarian diet does not correct these undesirable effects. To obtain beneficial effects on lipid profiel with avocado, lower amounts of carbohydrates and polyunsaturated fatty acids are probably needed

Demostración de la bioequivalencia clínica de Teldane y Feliberal mediante un bioensayo con reto de histamina intradérmica en voluntarios sanos / Demonstration of the Teldane and Feliberal clinical bioequivalence by means of bioassay with intradermical histminet trial in healthy volonteers

Para demostrar la bioequivalencia de dos formulaciones de Terfenadina, se diseño un estudio de equivalencia clínica, en el que se evaluó la eficacia del antihistamínico en la prevención de la respuesta por reto con histamina intradérmica en 12 voluntarios sanos, en un modelo doble ciego, cruzado, por bloques de tratamiento asignados aleatoriamente y durante siete días. Se determinó la respuesta dérmica de concentraciones de histamina de 0, 1, 5 y 10 mcg, mediante la medición de las ronchas provocadas tras su inyección en la región deltoidea, esto se hizo de control, una hora después de la primera dosis y 11 hioras después de la segunda y la última dosis de cada tratamiento. Los resultados obtenidos demostraron semejanza en cuanto a latencia, magnitud y duración del efecto protector al reto histamínico con ambas formulaciones, esto comprueba su equivalencia clínica y sugiere similar biodisponibilidad