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Mohammad Mahdi Najafpour Navid Jameei Moghaddam Leila Hassani Robabeh Bagheri Zhenlun Song Suleyman I. Allakhverdiev 《Photosynthesis research》2018,136(2):257-267
Nature uses a Mn oxide-based catalyst for water oxidation in plants, algae, and cyanobacteria. Mn oxides are among major candidates to be used as water-oxidizing catalysts. Herein, we used two straightforward and promising methods to form Escherichia coli bacteria/Mn oxide compounds. In one of the methods, the bacteria template was intact after the reaction. The catalysts were characterized by X-ray photoelectron spectroscopy, visible spectroscopy, scanning electron microscopy, high-resolution transmission electron microscopy, diffuse reflectance infrared Fourier transform spectroscopy, Raman spectroscopy, and X-ray diffraction spectrometry. Electrochemical properties of the catalysts were studied, and attributed redox potentials were assigned. The water oxidation of the compounds was examined under electrochemical condition. Linear sweep voltammetry showed that the onsets of water oxidation in our experimental condition for bacteria and Escherichia coli bacteria/Mn oxide were 1.68 and 1.56 V versus the normal hydrogen electrode (NHE), respectively. Thus, the presence of Mn oxide in the catalyst significantly decreased (~?120 mV) the overpotential needed for water oxidation. 相似文献
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Mahdi Jalili Tom Gebhardt Olaf Wolkenhauer Ali Salehzadeh-Yazdi 《生物化学与生物物理学报:疾病的分子基础》2018,1864(6):2349-2359
Decoding health and disease phenotypes is one of the fundamental objectives in biomedicine. Whereas high-throughput omics approaches are available, it is evident that any single omics approach might not be adequate to capture the complexity of phenotypes. Therefore, integrated multi-omics approaches have been used to unravel genotype–phenotype relationships such as global regulatory mechanisms and complex metabolic networks in different eukaryotic organisms. Some of the progress and challenges associated with integrated omics studies have been reviewed previously in comprehensive studies. In this work, we highlight and review the progress, challenges and advantages associated with emerging approaches, integrating gene expression and protein-protein interaction networks to unravel network-based functional features. This includes identifying disease related genes, gene prioritization, clustering protein interactions, developing the modules, extract active subnetworks and static protein complexes or dynamic/temporal protein complexes. We also discuss how these approaches contribute to our understanding of the biology of complex traits and diseases. This article is part of a Special Issue entitled: Cardiac adaptations to obesity, diabetes and insulin resistance, edited by Professors Jan F.C. Glatz, Jason R.B. Dyck and Christine Des Rosiers. 相似文献
125.
The diagnostic and prognostic value of circulating microRNAs in coronary artery disease: A novel approach to disease diagnosis of stable CAD and acute coronary syndrome
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Chondrogenic differentiation of human scalp adipose‐derived stem cells in Polycaprolactone scaffold and using Freeze Thaw Freeze method
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128.
Non-insulin-dependent diabetes mellitus (NIDDM) is a complex disease with a very high degree of heritability. Linkage and
segregation analyses have not been very productive in identifying genes responsible for polygenic diseases such as NIDDM,
and the majority of the genes determining susceptibility to this disorder remain to be identified. Using a case-control study
design, we investigated the possible roles of genes coding for HLA class II antigens, tumor necrosis factor-α (TNF-α), and
immunoglobulin (Ig) allotypes (GM and KM) in a group of Caucasians from Belgium (214 NIDDM patients and 200 controls). All
genetic markers were determined by polymerase chain reaction-based methods. We demonstrate that particular homozygous genotypes
of TNF-α and GM and KM allotypes epistatically interact with HLA-DQα1Arg 52 and contribute to an increased relative risk of NIDDM.
Received: 3 January 1999 / Accepted: 18 March 1999 相似文献
129.
Prucalopride (PCD), is a modern medication approved by the United States in 2018 to alleviate constipation caused by motility issues. PCD demonstrates a strong affinity and selectivity toward the 5-HT4 receptor. The study here introduces a feasible, direct, non-extractive, and affordable pathway for PCD analytical tracking. The fluorimetric study is based on the on–off effect on the emission amplitude of fluorone-based dye (pyrosin B). In a one-pot experiment, the complex between PCD and pyrosin B is formed instantly in an acidic medium. Correlation between decreased pyrosin B emission and PCD concentrations provides a linear calibration plot from 50 to 900 ng/mL. PCD–dye complex system affecting variables were meticulously tuned. The values of the estimated limit of quantitation and limit of detection for the current methodology were 47.5 and 15.7 ng/mL, respectively. Conformity of the strategy validity was achieved by a comprehensive study of the International Council for Harmonization of Technical Requirements for Pharmaceuticals for Human Use criteria. The method was convincingly applied for PCD assay in tablets and content uniformity investigation. Furthermore, PCD tracking in the spiked biological fluid was applied. Finally, the method uses distilled water as dispersing medium which rise accommodation with the green chemistry principle. 相似文献
130.