Listar Ciencias Biologicas por título
Mostrando ítems 1611-1630 de 3042
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In vivo and in vitro effect of imipramine and fluoxetine on Na+, K+-ATPase activity in synaptic plasma membranes from the cerebral cortex of rats
(2001) [Artículo de periódico]The effects of in vivo chronic treatment and in vitro addition of imipramine, a tricyclic antidepressant, or fluoxetine, a selective serotonin reuptake inhibitor, on the cortical membrane-bound Na+,K+- ATPase activity were ... -
In vivo evaluation of the sealing ability of two endodontic sealers in root canals exposed to the oral environment for 45 and 90 days
(2006) [Artículo de periódico]Este estudo in vivo avaliou a capacidade de selamento de um cimento endodôntico resinoso (AH Plus) e um a base de óxido de zinco eugenol (Endofill), em dentes de cães, expostos ao meio bucal, por 45 e 90 dias. Foi realizado ... -
In vivo glioblastoma growth is reduced by apyrase activity in a rat glioma model
(2006) [Artículo de periódico]Background: ATP is an important signalling molecule in the peripheral and central nervous system. Both glioma growth and tumor resection induces cell death, thus liberating nucleotides to the extracellular medium. Nucleotides ... -
Involvement of glutamate and reactive oxygen species in methylmercury neurotoxicity
(2007) [Artículo de periódico]This review addresses the mechanisms of methylmercury (MeHg)- induced neurotoxicity, specifically examining the role of oxidative stress in mediating neuronal damage. A number of critical findings point to a central role ... -
Involvement of the hippocampus, amygdala, entorhinal cortex in memory consolidation
(1997) [Artículo de periódico]A total of 182 young adult male Wistar rats were bilaterally implanted with cannulae into the CA1 region of the dorsal hippocampus and into the amygdaloid nucleus, the entorhinal cortex, and the posterior parietal cortex. ... -
Iron biofortification in rice: an update on quantitative trait loci and candidate genes
(2021) [Artículo de periódico]Rice is the most versatile model for cereals and also an economically relevant food crop; as a result, it is the most suitable species for molecular characterization of Fe homeostasis and biofortification. Recently there ... -
Iron homeostasis related genes in rice
(2003) [Artículo de periódico]Iron is essential for plants. However, excess iron is toxic, leading to oxidative stress and decreased productivity. Therefore, plants must use finely tuned mechanisms to keep iron homeostasis in each of their organs, ... -
Is biodiesel a more social fuel than ethanol? a comparative analysis from public policies in Brazil
(2012) [Artículo de periódico]As a promising source of renewable energy, biodiesel has received incentives through public policies in various countries. While some countries have adopted policies based on economic incentives for production and consumption, ... -
Ischemic preconditioning reduces peripheral oxidative damage associated with brain ischemia in rats
(1999) [Artículo de periódico]Brain ischemia followed by reperfusion causes neuronal death related to oxidative damage. Furthermore, it has been reported that subjects suffering from ischemic cerebrovascular disorders exhibit changes in circulating ... -
ISCOM-like nanoparticles formulated with Quillaja brasiliensis Saponins are promising adjuvants for seasonal influenza vaccines
(2021) [Artículo de periódico]Vaccination is the most effective public health intervention to prevent influenza infections, which are responsible for an important burden of respiratory illnesses and deaths each year. Currently, licensed influenza ... -
Is evolution faster at ecotones? A test using rates and tempo of diet transitions in Neotropical Sigmodontinae (Rodentia, Cricetidae)
(2021) [Artículo de periódico]We evaluated whether evolution is faster at ecotones as niche shifts may be needed to persist under unstable environment. We mapped diet evolution along the evolutionary history of 350 sigmodontine species. Mapping was ... -
Is intrauterine exposure to acetaminophen associated with emotional and hyperactivity problems during childhood? : findings from the 2004 Pelotas birth cohort
(2018) [Artículo de periódico]Background: Longitudinal studies have consistently reported that prenatal exposure to acetaminophen can to lead to an increased risk of attention deficit-hyperactivity disorder during childhood. This study aimed to investigate ... -
Is it necessary to perform occupational audiometric testing at 6-months of employment?
(2022) [Artículo de periódico]Introduction: Current Brazilian legislation requires that all workers exposed to noise are to be given an audiogram upon hiring, after 6 months of employment (first periodic test), and annually after the first periodic ... -
Isoenzymatic polymorphisms in urban populations of Drosophila willistoni
(2001) [Artículo de periódico]Natural populations of Drosophila willistoni collected both in urban sites and in the wild, as control, were analysed with respect to their isoenzyme polymorphisms in six loci of enzyme systems, through horizontal ... -
Isoenzyme variation in the leaf-cutting ants Acromyrmex heyeri and Acromyrmex striatus (Hymenoptera: formicidae)
(2002) [Artículo de periódico]This is the first study of isoenzyme variability in the leaf-cutting ants (Myrmicinae, Attini) Acromyrmex heyeri (Forel, 1899) and A. striatus (Roger, 1863) which are common throughout the southern Brazilian state of Rio ... -
Isoflurane and the analgesic effect of acupuncture and electroacupuncture in an animal model of neuropathic pain
(2018) [Artículo de periódico]The present study aimed to determine whether isoflurane interferes with the analgesic effects of acupuncture (Ac) and electroacupuncture (EA), using a neuropathic pain (NP) rat model. In total, 140 male Wistar rats were ... -
Isolamento do vírus Parainfluenza bovino tipo 3 no Rio Grande do Sul, Brasil : relato de caso
(2003) [Artículo de periódico]É descrito o isolamento do vírus Parainfluenza bovino tipo 3 (bPI-3) a partir de secreções nasais coletadas de um bovino com infecção respiratória. A identificação do agente foi realizada através de isolamento em cultivo ... -
Isolamento e identificação de amebas de vida livre potencialmente patogênicas em amostras de ambientes de hospital público da cidade de Porto Alegre-RS
(2007) [Artículo de periódico]Um estudo sobre a presença de amebas de vida livre em um hospital público foi desenvolvido na Cidade de Porto Alegre, RS. Poeira e biofilmes de 15 ambientes hospitalares, incluindo CTI, UTI pediátrica, cozinha, emergência, ... -
Isolamento e seleção de micro-organismos resistentes e capazes de volatilizar mercúrio
(2011) [Artículo de periódico]Mercury (Hg) occurs in the environment as a natural and anthropogenic element, and through the years the accumulation of mercury has affected the integrity of ecosystems and human health. This study presents a screening ... -
Isolated cutaneous lesions in paracoccidioidomycosis : a suggestive case of acquisition through cutaneous inoculation
(2021) [Artículo de periódico]