Negative Priming
Mostrando 1-12 de 54 artigos, teses e dissertações.
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1. Salt stress alleviation by seed priming with silicon in lettuce seedlings: an approach based on enhancing antioxidant responses
ABSTRACT Seed germination and seedling growth are the stages most sensitive to salt stress, which can induce ion-specific effects and oxidative stress. Although silicon (Si) has been known to improve plant defense systems against stressful-conditions, little is known about seed priming with Si and mechanisms of Si-mediated alleviation of salt stress in seedl
Bragantia. Publicado em: 2020-03
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2. Seed priming improves the germination and growth rate of melon seedlings under saline stress
RESUMO: A germinação e o crescimento de plantas de melão (Cucumis melo L.) podem ser severamente afetadas pelo excesso de sais no solo ou na água de irrigação. No entanto, os efeitos negativos do estresse salino podem ser amenizados com o uso de métodos adequados de condicionamento das sementes. Assim, este estudo objetivou investigar os efeitos do o
Cienc. Rural. Publicado em: 19/06/2019
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3. Accumulation of organic and inorganic solutes in NaCl-stressed sorghum seedlings from aged and primed seeds
Although it has been known that the seed's physiological potential affects its response to osmoconditioning and abiotic stresses, researches involving seed aging and priming associated to abiotic stresses are scarce. The aim of this work was to evaluate the role of seed priming on salt tolerance in sorghum seedlings from seeds with two vigor levels (aged or
Scientia Agricola. Publicado em: 2011-12
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4. Water type and irrigation time effects on microbial metabolism of a soil cultivated with Bermuda-grass Tifton 85
This study investigated the microbial metabolism in Bermuda-grass Tifton 85 areas after potable-water and effluent irrigation treatments. The experiment was carried out in Lins/SP with samples taken in the rainy and dry seasons (2006) after one year and three years of irrigation management, and set up on an entirely randomized block design with four treatmen
Brazilian Archives of Biology and Technology. Publicado em: 2011-06
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5. Assessing negative priming by attended distractors in a paper-and-pencil task
The paper-and-pencil digit-comparison task for assessing negative priming (NP) was introduced, using a referent-size-selection procedure that was demonstrated to enhance the effect. NP is indicated by slower responses to recently ignored items, and proposed within the clinical-experimental framework as a major cognitive index of active suppression of distrac
Brazilian Journal of Medical and Biological Research. Publicado em: 2004-08
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6. Some experimental contributions to the study of the negative priming effect in selective attention tasks. / Algumas contribuições experimentais ao estudo do efeito de priming negativo em tarefas de atenção seletiva.
The development of sensitive and simple tests for the assessment of the negative priming effect has theoretical relevance to the elucidation of selective attention models, and also practical and potential clinical implications. The negative priming effect has been regarded as an index of inhibitory attentional processing and was proposed for the detection of
Publicado em: 2001
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7. Inhibition of endotoxin-induced priming of human neutrophils by lipid X and 3-Aza-lipid X.
Lipid X, a precursor of lipid A (the toxic moiety of endotoxin), has been shown to protect animals from the lethal effects of endotoxin challenge. We investigated the mechanism of action of lipid X and 3-aza-lipid X, a diamino-analogue, in vitro, using the ability of lipopolysaccharide (LPS) to prime neutrophils for an enhanced release of toxic oxygen radica
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8. Consensus-Degenerate Hybrid Oligonucleotide Primers for Amplification of Priming Glycosyltransferase Genes of the Exopolysaccharide Locus in Strains of the Lactobacillus casei Group
A primer design strategy named CODEHOP (consensus-degenerate hybrid oligonucleotide primer) for amplification of distantly related sequences was used to detect the priming glycosyltransferase (GT) gene in strains of the Lactobacillus casei group. Each hybrid primer consisted of a short 3′ degenerate core based on four highly conserved amino acids and a lon
American Society for Microbiology.
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9. Priming of immune responses against transporter associated with antigen processing (TAP)-deficient tumours: tumour direct priming
We previously showed that introduction of transporter associated with antigen processing (TAP) 1 into TAP-negative CMT.64, a major histocompatibility complex class I (MHC-I) down-regulated mouse lung carcinoma cell line, enhanced T-cell immunity against TAP-deficient tumour cells. Here, we have addressed two questions: (1) whether such immunity can be furthe
Blackwell Science Inc.
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10. Enhancing DNA vaccine potency by coadministration of DNA encoding antiapoptotic proteins
Intradermal vaccination by gene gun efficiently delivers DNA vaccines into DCs of the skin, resulting in the activation and priming of antigen-specific T cells in vivo. DCs, however, have a limited life span, hindering their long-term ability to prime antigen-specific T cells. We reason that a strategy that prolongs the survival of DNA-transduced DCs will en
American Society for Clinical Investigation.
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11. Purification, toxicity, and antiendotoxin activity of polymyxin B nonapeptide.
Polymyxin B, a relatively toxic antibiotic, has potent endotoxin-neutralizing properties that may be beneficial as adjunctive therapy in gram-negative sepsis. Polymyxin B nonapeptide (deacylated polymyxin B) is devoid of antibiotic activity but retains the capacity to disorganize the outer membrane of gram-negative bacteria. To evaluate the potential therape
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12. In vivo blockade of CTLA-4 enhances the priming of responsive T cells but fails to prevent the induction of tumor antigen-specific tolerance
The efficacy of therapeutic vaccination for the treatment of cancer is limited by peripheral tolerance to tumor antigens. In vivo blockade of CTLA-4, a negative regulator of T cell function, can induce the regression of established tumors and can augment the tumor rejection achieved through therapeutic vaccination. These outcomes may reflect enhanced tumor-s
The National Academy of Sciences.