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Djabarouti S Breilh D Duffau P Lazaro E Greib C Caubet O Saux MC Pellegrin JL Viallard JF 《Arthritis research & therapy》2010,12(6):R217
Introduction
The aim of this study was to determine whether mycophenolate mofetil (MMF) pharmacokinetics (PK) under combined MMF and prednisone remission-maintenance therapy can predict systemic lupus erythematosus (SLE) clinical flares. 相似文献3.
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dos Reis SP Tavares Lde S Costa Cde N Brígida AB de Souza CR 《Molecular biology reports》2012,39(6):6513-6519
Cassava (Manihot esculenta Crantz) is one of the world’s most important food crops. It is cultivated mainly in developing countries of tropics, since
its root is a major source of calories for low-income people due to its high productivity and resistance to many abiotic and
biotic factors. A previous study has identified a partial cDNA sequence coding for a putative RING zinc finger in cassava
storage root. The RING zinc finger protein is a specialized type of zinc finger protein found in many organisms. Here, we
isolated the full-length cDNA sequence coding for M. esculenta RZF (MeRZF) protein by a combination of 5′ and 3′ RACE assays. BLAST analysis showed that its deduced amino acid sequence
has a high level of similarity to plant proteins of RZF family. MeRZF protein contains a signature sequence motif for a RING
zinc finger at its C-terminal region. In addition, this protein showed a histidine residue at the fifth coordination site,
likely belonging to the RING-H2 subgroup, as confirmed by our phylogenetic analysis. There is also a transmembrane domain
in its N-terminal region. Finally, semi-quantitative RT-PCR assays showed that MeRZF expression is increased in detached leaves
treated with sodium chloride. Here, we report the first evidence of a RING zinc finger gene of cassava showing potential role
in response to salt stress. 相似文献
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Charlotte Bernard Bixente Dilharreguy Michèle Allard Hélène Amieva Fabrice Bonnet Frédéric Dauchy Carinne Greib Patrick Dehail Gwéna?lle Catheline for the ANRS CO Aquitaine cohort study group 《PloS one》2013,8(7)
Motor impairment is highly prevalent in HIV-infected patients. Here, we assess associations between peripheral muscular deficits as evaluated by the 5 sit-to-stand test (5STS) and structural integrity of the motor system at a central level. Eighty-six HIV-infected patients receiving combination antiretroviral therapy and with no major cerebral events, underwent an MRI scan and the 5STS. Out of 86 participants, forty presented a score greater than two standard deviations above mean normative scores calculated for the 5STS and were therefore considered as motor-impaired. MRI-structural cerebral parameters were compared to the unimpaired participants. Fractional Anisotropy (FA), Axial Diffusivity (AD) and Radial Diffusivity (RD), reflecting microstructural integrity, were extracted from Diffusion-Tensor MRI. Global and regional cerebral volumes or thicknesses were extracted from 3D-T1 morphological MRI. Whereas the two groups did not differ for any HIV variables, voxel-wise analysis revealed that motor-impaired participants present low FA values in various cortico-motor tracts and low AD in left cortico-spinal tract. However, they did not present reduced volumes or thicknesses of the precentral cortices compared to unimpaired participants. The absence of alterations in cortical regions holding motor-neurons might argue against neurodegenerative process as an explanation of White Matter (WM) disorganization. 相似文献
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Rached FB Ndjembo-Ezougou C Chandran S Talabani H Yera H Dandavate V Bourdoncle P Meissner M Tatu U Langsley G 《Biology of the cell / under the auspices of the European Cell Biology Organization》2012,104(1):34-47
Background information
The pathology causing stages of the human malaria parasite Plasmodium falciparum reside within red blood cells that are devoid of any regulated transport system. The parasite, therefore, is entirely responsible for mediating vesicular transport within itself and in the infected erythrocyte cytoplasm, and it does so in part via its family of 11 Rab GTPases. Putative functions have been ascribed to Plasmodium Rabs due to their homology with Rabs of yeast, particularly with Saccharomyces that has an equivalent number of rab/ypt genes and where analyses of Ypt function is well characterized.Results
Rabs are important regulators of vesicular traffic due to their capacity to recruit specific effectors. In order to identify P. falciparum Rab (PfRab) effectors, we first built a Ypt‐interactome by exploiting genetic and physical binding data available at the Saccharomyces genome database (SGD). We then constructed a PfRab‐interactome using putative parasite Rab‐effectors identified by homology to Ypt‐effectors. We demonstrate its potential by wet‐bench testing three predictions; that casein kinase‐1 (PfCK1) is a specific Rab5B interacting protein and that the catalytic subunit of cAMP‐dependent protein kinase A (PfPKA‐C) is a PfRab5A and PfRab7 effector.Conclusions
The establishment of a shared set of physical Ypt/PfRab‐effector proteins sheds light on a core set Plasmodium Rab‐interactants shared with yeast. The PfRab‐interactome should benefit vesicular trafficking studies in malaria parasites. The recruitment of PfCK1 to PfRab5B+ and PfPKA‐C to PfRab5A+ and PfRab7+ vesicles, respectively, suggests that PfRab‐recruited kinases potentially play a role in early and late endosome function in malaria parasites. 相似文献8.
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Background
Integration of information streams into a unitary representation is an important task of our cognitive system. Within working memory, the medial temporal lobe (MTL) has been conceptually linked to the maintenance of bound representations. In a previous fMRI study, we have shown that the MTL is indeed more active during working-memory maintenance of spatial associations as compared to non-spatial associations or single items. There are two explanations for this result, the mere presence of the spatial component activates the MTL, or the MTL is recruited to bind associations between neurally non-overlapping representations.Methodology/Principal Findings
The current fMRI study investigates this issue further by directly comparing intrinsic intra-item binding (object/colour), extrinsic intra-item binding (object/location), and inter-item binding (object/object). The three binding conditions resulted in differential activation of brain regions. Specifically, we show that the MTL is important for establishing extrinsic intra-item associations and inter-item associations, in line with the notion that binding of information processed in different brain regions depends on the MTL.Conclusions/Significance
Our findings indicate that different forms of working-memory binding rely on specific neural structures. In addition, these results extend previous reports indicating that the MTL is implicated in working-memory maintenance, challenging the classic distinction between short-term and long-term memory systems. 相似文献10.