Dual Mechanism of Action of 5-Nitro-1,10-Phenanthroline against Mycobacterium tuberculosis
作者:Saqib Kidwai、Chan-Yong Park、Shradha Mawatwal、Prabhakar Tiwari、Myung Geun Jung、Tannu Priya Gosain、Pradeep Kumar、David Alland、Sandeep Kumar、Avinash Bajaj、Yun-Kyung Hwang、Chang Sik Song、Rohan Dhiman、Ill Young Lee、Ramandeep Singh
DOI:10.1128/aac.00969-17
日期:2017.11
New chemotherapeutic agents with novel mechanisms of action are urgently required to combat the challenge imposed by the emergence of drug-resistant mycobacteria. In this study, a phenotypic whole-cell screen identified 5-nitro-1,10-phenanthroline (5NP) as a lead compound. 5NP-resistant isolates harbored mutations that were mapped to fbiB and were also resistant to the bicyclic nitroimidazole PA-824
Novel mechanistic aspects of the reduction of iron(III) phenanthroline complexes by aquo iron(II). Temperature dependence of the substituent effect
作者:R. Schmid、L. Han
DOI:10.1016/s0020-1693(00)83562-8
日期:1983.1
Abstract There is strong evidence that the reduction of Fe(phen) 3+ 3 by Fe 2+ aq occurs via an inner-sphere path mediated by water molecules coordinated at the carbon atom adjacent to the ring nitrogen of the phenanthroline ligands. Water thus acts as a catalyst. The rate constant measured is related to the product Kk 2 of the equilibrium constant of the covalent hydration of Fe(phen) 3+ 3 and the
A complex crystal is composed of anion of triiodine and cation of a polycyclic aromatic compound containing at least one nitrogen atom and at least 3 aromatic condensed rings. Since the complex crystal has such a stable structure, it shows excellent heat resistance and excellent moisture resisting property. Furthermore, the complex crystal has light-polarizing performance because of an arrangement of the molecular chain of iodine. Moreover, the complex crystal exhibits excellent polarization because of an interaction between the polycyclic aromatic compound and iodine. Therefore, the complex crystal is suitable for use as light-adjusting particles of a light valve or a light-adjusting glass.
Small volume in vitro analyte sensor with diffusible or non-leachable redox mediator
申请人:TheraSense, Inc.
公开号:US20030199744A1
公开(公告)日:2003-10-23
A region of skin, other than the fingertips, is stimulated. After stimulation, an opening is created in the skin (e.g., by lancing the skin) to cause a flow of body fluid from the region. At least a portion of this body fluid is transported to a testing device where the concentration of analyte (e.g., glucose) in the body fluid is then determined. It is found that the stimulation of the skin provides results that are generally closer to the results of measurements from the fingertips, the traditional site for obtaining body fluid for analyte testing.
A sensor utilizing a non-leachable or diffusible redox mediator is described. The sensor includes a sample chamber to hold a sample in electrolytic contact with a working electrode, and in at least some instances, the sensor also contains a non-leachable or a diffusible second electron transfer agent. The sensor and/or the methods used produce a sensor signal in response to the analyte that can be distinguished from a background signal caused by the mediator. The invention can be used to determine the concentration of a biomolecule, such as glucose or lactate, in a biological fluid, such as blood or serum, using techniques such as coulometry, amperometry, and potentiometry. An enzyme capable of catalyzing the electrooxidation or electroreduction of the biomolecule is typically provided as a second electron transfer agent.