Results: 3070

Effects of climate and forest structure on palms, bromeliads and bamboos in Atlantic Forest fragments of Northeastern Brazil

Braz. j. biol; 76 (4), 2016
Abstract Palms, bromeliads and bamboos are key elements of tropical forests and understanding the effects of climate, anthropogenic pressure and forest structure on these groups is crucial to forecast structural changes in tropical forests. Therefore, we investigated the effects of these factors on the a...

Soil pretreatment and fast cell lysis for direct polymerase chain reaction from forest soils for terminal restriction fragment length polymorphism analysis of fungal communities

Braz. j. microbiol; 47 (4), 2016
Abstract Humic substances in soil DNA samples can influence the assessment of microbial diversity and community composition. Using multiple steps during or after cell lysis adds expenses, is time-consuming, and causes DNA loss. A pretreatment of soil samples and a single step DNA extraction may improve e...

Effects of the protective, curative, and eradicative applications of chitosan against Penicillium expansum in apples

Braz. j. microbiol; 47 (4), 2016
Abstract Apple is one of the most important temperate fruit to Brazil economy, and the use of synthetic chemicals has been the main method for reducing postharvest diseases, such as the blue mold, caused by Penicillium expansum. This work intends to evaluate the practical utilization of chitosan for blue...

Extracellular adenosine 5'-triphosphate concentrations changes in rat spinal cord associated with the activation of urinary bladder afferents. A microdialysis study.

Einstein (Säo Paulo); 14 (4), 2016
ABSTRACT Objective To determine adenosine 5’-triphosphate levels in the interstice of spinal cord L6-S1 segment, under basal conditions or during mechanical and chemical activation of urinary bladder afferents. Methods A microdialysis probe was transversally implanted in the dorsal half of spin...

Uromodulin: a new biomarker of fetal renal function?

J. bras. nefrol; 38 (4), 2016
Abstract Introduction: Obstructive uropathies are main diseases affecting the fetus. Early diagnosis allows to establish the appropriate therapy to minimize the risk of damage to kidney function at birth. Biochemical markers have been used to predict the prognosis of renal function in fetuses. Uromoduli...

Piper aduncum against Haemonchus contortus isolates: cross resistance and the research of natural bioactive compounds

Abstract The anthelminthic activity of the essential oil (EO) of Piper aduncum L. was tested in vitro on eggs and larvae of resistant (Embrapa2010) and susceptible (McMaster) isolates of Haemonchus contortus. The EO was obtained by steam distillation and its components identified by chromatography. EO co...

Assessment of different Lippia sidoides genotypes regarding their acaricidal activity against Rhipicephalus (Boophilus) microplus

Abstract The aim of this study was to select different genotypes of Lippia sidoides with the highest activity against larvae and engorged females of the tick Rhipicephalus (Boophilus) microplus. The germplasms studied were LSID006, LSID102, LSID103 and LSID104. The LSID104 genotype, that presented carvac...

Función e importancia clínica de la enzima lisil-oxidasa

La lisil-oxidasa (LOX) es una quinoenzima que contiene cobre y lisil-tirosilquinona como cofactor. Esta amino-oxidasa actúa en la catálisis de la desaminación oxidativa de residuos de lisina en los precursores del colágeno y de elastina. Anteriormente se ha informado sobre su biosíntesis, sus propie...

Eritropoyetina como agente eritropoyético y no eritropoyético: consideraciones terapéuticas
Erythropoietic and non-erythropoietic functions of erythropoietin: therapeutic considerations

La producción de glóbulos rojos es controlada continuamente para suplir la desaparición de las células envejecidas y garantizar un aporte de oxígeno adecuado a todo el organismo. La citoquina pleitrópica eritropoyetina (Epo), originalmente definida por su rol en la eritropoyesis para prevenir la mu...

Testosterone and Voluntary Exercise, Alone or Together Increase Cardiac Activation of AKT and ERK1/2 in Diabetic Rats

Arq. bras. cardiol; 107 (6), 2016
Abstract Background: Impaired angiogenesis in cardiac tissue is a major complication of diabetes. Protein kinase B (AKT) and extracellular signal regulated kinase (ERK) signaling pathways play important role during capillary-like network formation in angiogenesis process. Objectives: To determine the e...