Density dependence is the major process keeping the sizes of natural populations within bounds. In organisms with complex life cycles, the stage at which density dependence occurs and whether it occurs in one or several life stages have important consequences for the dynamics of their populations. I manipulated density of pool frogs (Rana lessonae) during the aquatic larval and the terrestrial ...

Juvenile onset amyotrophic lateral sclerosis (ALS) is a very rare form of motor neuron disease, with the first symptoms of motor neuron degeneration manifested before 25 years of age. Juvenile ALS is more frequently familial in nature than the adult-onset forms. Mutations in the alsin (ALS2), senataxin (SETX), and Spatacsin (SPG11) have been associated with familial ALS with juvenile onset and ...

the mean fiber length of three beech trees (fagus orientalis l.) at the lower and higher points (1% and 75% tree height) of the stem at an intermediate altitude (500-1000m) in the caspian forests in sari region were 1.36 and 1.22mm respectively, close to the values in three trees at high altitude (1000-1500m), that were found to be 1.39 and 1.36 mm. the mean fiber lengths of the whole stem, usi...

introduction: repetitive cortical spreading depression (csd) can lead to cell death in immature brain tissue. caspases are involved in neuronal cell death in several csd-related neurological disorders. yet, whether repetitive csd itself can induce caspase activation in adult or juvenile tissue remains unknown. inducing repetitive csd in somatosensory cortices of juvenile and adult rats in vivo,...

Although youth who commit serious violent crimes are small in number, they account for a disproportionate amount of juvenile crime. How then can we best intervene with this difficult—even dangerous—population? A major study, funded by the Office of Juvenile Justice and Delinquency Prevention and conducted by its Study Group on Serious and Violent Juvenile Offenders, sheds new light on promising...

-A variety of water-miscible organic solvents caused profound activation of the homogeneous juvenile hormone esterase from Manduca sexta. Much lower activation was observed with other species. Methods for the handling of solutions of juvenile hormone are presented. The implications of solvent activation of juvenile hormone esterase activity are discussed, especially as they relate to analysis o...

background: antiphospholipid antibody syndrome (aps) can either occur as a primary syndrome or associated with other autoimmune diseases such as systemic lupus erythematosus (sle). anticardiolipin antibody (acl) of igg and/or igm isotype in blood, measured by a standardized elisa is the most acceptable laboratory criteria. aps igg isotype, particularly igg2 subclass is more strongly associated ...

how to cite this article: shiari r, hassase yegane m, farivar s, javadi parvaneh v, mirjavadi sa. neuropsychiatric symptoms as the first manifestation of juvenile systemic lupus erythematosus: a complicated case with klinefelter’s syndrome. iran j child neurol. 2014 winter; 8(1):62-65. abstract systemic lupus erythematosus (sle) is an autoimmune, multisystem disorder with various manifestations...