Electroweak parameters of the z0 resonance and the standard model

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Involvement of Nitric Oxide, Neurotrophins and HPA Axis in Neurobehavioural Alterations Induced by Prenatal Stress

Several studies suggest that negative emotions during pregnancy generate adverse effects on the cognitive, behavioural and emotional development of the descendants. The psychoneuroendocrine pathways involve the transplacentary passage of maternal glucocorticoids in order to influence directly on fetal growth and brain development. Nitric oxide is a gaseous neurotransmitter that plays an important role in the control of neural activity by diffusing into neurons and participates in learning and memory processes. It has been demonstrated that nitric oxide is involved in the regulation of corticosterone secretion. Thus, it has been found that the neuronal isoform of nitric oxide synthase (nNOS) is an endogenous inhibitor of glucocorticoid receptor (GR) in the hippocampus and that nNOS in the hippocampus may participate in the modulation of hypothalamic–pituitary–adrenal axis activity via GR. Neurotrophins are a family of secreted growth factors consisting of nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), neurotrophin 3 (NT3) and NT4. Although initially described in the nervous system, they regulate processes such as cell survival, proliferation and differentiation in several other compartments. It has been demonstrated that the NO–citrulline cycle acts together with BDNF in maintaining the progress of neural differentiation. In the present chapter, we explore the interrelation between nitric oxide, glucocorticoids and neurotrophins in brain areas that are key structures in learning and memory processes. The participation of this interrelation in the behavioural and cognitive alterations induced in the offspring by maternal stress is also addressed.Fil: Maur, Damián Gustavo. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Farmacología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Estudios Farmacológicos y Botánicos. Universidad de Buenos Aires. Facultad de Medicina. Centro de Estudios Farmacológicos y Botánicos; ArgentinaFil: Pascuan, Cecilia G.. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Farmacología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Estudios Farmacológicos y Botánicos. Universidad de Buenos Aires. Facultad de Medicina. Centro de Estudios Farmacológicos y Botánicos; ArgentinaFil: Genaro, Ana Maria. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Farmacología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Estudios Farmacológicos y Botánicos. Universidad de Buenos Aires. Facultad de Medicina. Centro de Estudios Farmacológicos y Botánicos; ArgentinaFil: Zorrilla Zubilete, María Aurelia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Estudios Farmacológicos y Botánicos. Universidad de Buenos Aires. Facultad de Medicina. Centro de Estudios Farmacológicos y Botánicos; Argentin

A direct search for neutralino production at LEP

This is the post-print version of the Article - Copyright @ 1990 Elsevier.A search has been performed for the production of neutralinos (χ, χ′) in e+e− annihilation at energies near the Z0 pole. No evidence for these particles was found either in searches for events with two acoplanar jets, low visible energy, and missing pt (sensitive to or in searches for single-photon events (sensitive to Z0→χχ′→χχγ). Model independent upper limits (at the 95% CL) on the branching ratio for the decay mode Z0 →χχ′ of a few 10−4 are obtained for most of the range of neutralino masses that is kinematically accessible at LEP energies. Upper limits on the mixing factor of neutralinos are also placed as a function of the neutralino masses.This study was supported by the US Dept. of Energy, US National Science Foundation, UK Science and Engineering Research Council, the A.P. Sloan Foundation, the Canadian National Sciences and Engineering Research Council, the Israeli Ministry of Science, Minerva Gesellschaft, The Japanese Ministry of Education, Science and Culture, the Monbusho International Science Research Program, the American-Israeli Bi-national Science Foundation, L'insitut de Recherche Fondamentale du Comissariat a L'Energie Atomique, and the Bundesministerium fur Forschng und Technologie

A measurement of electron production in hadronic Z0 decays and a determination of GAMMA (Z0 --> b anti-b)

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A Global determination of alpha-s (M(z0)) at LEP

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Test of CP invariance in e+ e- ---> Z0 ---> tau+ tau- and a limit on the weak dipole moment of the tau lepton

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