Response of the brain to enrichment Tập 73 Số 2 - Trang 211-220 - 2001
Marian C. Diamond
Before 1960, the brain was considered by scientists to be immutable, subject only to genetic control. In the early sixties, however, investigators were seriously speculating that environmental influences might be capable of altering brain structure. By 1964, two research laboratories proved that the morphology and chemistry or physiology of the brain could be experientially altered (Bennet...... hiện toàn bộ
Molecular basis of mammalian cell invasion by Trypanosoma cruzi Tập 78 Số 1 - Trang 87-111 - 2006
Nobuko Yoshida
Establishment of infection by Trypanosoma cruzi, the agent of Chagas' disease, depends on a series of events involving interactions of diverse parasite molecules with host components. Here we focus on the mechanisms of target cell invasion by metacyclic trypomastigotes (MT) and mammalian tissue culture trypomastigotes (TCT). During MT or TCT internalization, signal transduction pathways ar...... hiện toàn bộ
Elastase-induced pulmonary emphysema: insights from experimental models Tập 83 Số 4 - Trang 1385-1396
Mariana A. Antunes, Patrícia R. M. Rocco
Several distinct stimuli can be used to reproduce histological and functional features of human emphysema, a leading cause of disability and death. Since cigarette smoke is the main cause of emphysema in humans, experimental researches have attempted to reproduce this situation. However, this is an expensive and cumbersome method of emphysema induction, and simpler, more efficacious altern...... hiện toàn bộ
Probiotic level effects on growth performance, carcass traits, blood parameters, cecal microbiota, and immune response of broilers Tập 88 Số 2 - Trang 1011-1021
MOHAMMADREZA POURAKBARI, Alireza Seidavi, Leila Asadpour, Andrés Luis Martínez Marín
Probiotic effects on growth performance, carcass traits, blood parameters, cecal microbiota, and immune response of broilers were studied. Two hundred one-day-old male chickens were allocated to one of five treatments (four replicates of 10 birds per treatment): control, and the same control diet supplemented with 0.005%, 0.01%, 0.015% and 0.02% probiotics. Probiotics in feed at 0.01% or h...... hiện toàn bộ
An overview of chagasic cardiomyopathy: pathogenic importance of oxidative stress Tập 77 Số 4 - Trang 695-715 - 2005
Michele A. Zacks, Wen Jian-jun, Galina Vyatkina, Vandanajay Bhatia, Nisha Garg
There is growing evidence to suggest that chagasic myocardia are exposed to sustained oxidative stress-induced injuries that may contribute to disease progression. Pathogen invasion- and replication-mediated cellular injuries and immune-mediated cytotoxic reactions are the common source of reactive oxygen species (ROS) in infectious etiologies. However, our understanding of the source and ...... hiện toàn bộ
Petrography and mineral chemistry of carbonatites and mica-rich rocks from the Araxá complex (Alto Paranaíba Province, Brazil) Tập 73 Số 1 - Trang 71-98 - 2001
G. Traversa, Celso B. Gomes, P. Brotzu, Nicoletta Buraglini, L. Morbidelli, M. S. Principato, Sara Ronca, Excelso Ruberti
The Araxá complex (16 km²) comprises carbonatites forming a central core and a complex network of concentric and radial dykes as well as small veins; additionally, it includes mica-rich rocks, phoscorites and lamprophyres. Fenites also occur and are represented by Proterozoic quartzites and schists of the Araxá Group. The petrographic study of 130 borehole samples indicates that the comple...... hiện toàn bộ