Early insulin initiation benefits people with diabetes by inducing a rapid and sustained glycemic control along with preventing the onset of adverse legacy effects early in the disease course. This has an over-arching effect as it could possibly modify the disease course and prevent the development of vascular complications, as has been attested to in landmark studies like the UKPDS and GRACE. Insulin glargine 100 U/mL (Gla-100) has been extensively studied under various scenarios as the initial insulin administered early in T2DM disease course, registering significant glycemic and vascular benefits over the standard of care.
View Article and Find Full Text PDFThe design of porous materials for the recognition of multiple hydrocarbons is highly desirable for the energy-efficient separation and recognition of chemical feedstock. Herein, three new iso-structural porous discrete metal-organic cages of formula {[Pd (NiPr) PO] (R-AN) } (R-AN=anilate linkers) for the selective recognition of substituted aromatic hydrocarbons are reported. The tetrahedral cages 1, 2, and 3 containing anilate, chloranilate, and bromanilate linkers exhibited selective encapsulation of mesitylene, o-xylene, and p-xylene, respectively, over other analogous aromatic hydrocarbons.
View Article and Find Full Text PDFBull Entomol Res
April 2014
Many hemipteroids are major pests and vectors of microbial pathogens, infecting crops. Saliva of the hemipteroids is critical in enabling them to be voracious feeders on plants, including the economically important ones. A plethora of hemipteroid salivary enzymes is known to inflict stress in plants, either by degrading the plant tissue or by affecting their normal metabolism.
View Article and Find Full Text PDFVarious thermally stable energetic polynitro-aryl-1,2,3-triazoles have been synthesized through Cu-catalyzed [3+2] cycloaddition reactions between their corresponding azides and alkynes, followed by nitration. These compounds were characterized by analytical and spectroscopic methods and the solid-state structures of most of these compounds have been determined by using X-ray diffraction techniques. Most of the polynitro-bearing triazole derivatives decomposed within the range 142-319 °C and their heats of formation and crystal densities were determined from computational studies.
View Article and Find Full Text PDFBackground: Phlebotomus tobbi is a vector of Leishmania infantum, and P. sergenti is a vector of Leishmania tropica. Le.
View Article and Find Full Text PDFA "grafting from" approach has been used for controlled deposition of cross-linked polymers by living radical polymerisation. Borosilicate glass was modified with N,N-diethylaminodithiocarbamoylpropyl(trimethoxy)silane, in order to confine the iniferter reactive groups solely at its surface, then placed in solution with monomers and cross-linker. The polymerisation was initiated by UV irradiation.
View Article and Find Full Text PDFThe immobilisation of bio-receptors on transducer surfaces is a key step in the development of biosensors. The immobilisation needs to be fast, cheap and most importantly should not affect the biorecognition activity of the immobilised receptor. The development of a protocol for biomolecule immobilisation onto a surface plasmon resonance (SPR) sensor surface using inexpensive polythiol compounds is presented here.
View Article and Find Full Text PDFA new monomer, which incorporates both aniline and methacrylamide functional groups, was shown to possess orthogonal polymerisation behaviour to produce conjugated polyaniline suitable for a wide range of applications.
View Article and Find Full Text PDFOne of the difficulties with using molecularly imprinted polymers (MIPs) and other electrically insulating materials as the recognition element in electrochemical sensors is the lack of a direct path for the conduction of electrons from the active sites to the electrode. We have sought to address this problem through the preparation and characterization of novel hybrid materials combining a catalytic MIP, capable of oxidizing the template, catechol, with an electrically conducting polymer. In this way a network of "molecular wires" assists in the conduction of electrons from the active sites within the MIP to the electrode surface.
View Article and Find Full Text PDFMycotoxins are small (MW approximately 700), toxic chemical products formed as secondary metabolites by a few fungal species that readily colonise crops and contaminate them with toxins in the field or after harvest. Ochratoxins and Aflatoxins are mycotoxins of major significance and hence there has been significant research on broad range of analytical and detection techniques that could be useful and practical. Due to the variety of structures of these toxins, it is impossible to use one standard technique for analysis and/or detection.
View Article and Find Full Text PDFA desaturase with 83% sequence identity to the coriander delta(4)-16:0-ACP desaturase was isolated from developing seeds of Hedera helix (English ivy). Expression of the ivy desaturase in Arabidopsis resulted in the accumulation of 16:1delta(4) and its expected elongation product 18:1delta(6) (petroselinic acid). Expression in Escherichia coli resulted in the accumulation of soluble, active protein that was purified to apparent homogeneity.
View Article and Find Full Text PDFBiosensors are analytical devices that use a biological or biologically derived material immobilized at a physicochemical transducer to measure one or more analytes. Although there are a large number of reviews on biosensors in general, there has been little systematic information presented on the application of natural receptors in sensor technology. This perspective discusses broadly the fundamental properties of natural receptors, which make them an attractive option for use as biorecognition elements in sensor technology.
View Article and Find Full Text PDFA detailed study using the cyclic voltammogram was done on the live cells of Aspergillus terreus. The peak current values were obtained for different days of growth and plotted against time. The response of cyclic voltammogram showed the phases of the growth of the fungus.
View Article and Find Full Text PDF2,4-Toluene diamine (TDA), a class A carcinogen, is a major raw material for the production of toluene diisocyanate (TDI), which is one of the precursors for the production of polyurethane foams (PU). This review deals with 2,4-toluene diamine's (TDA) carcinogenicity, analytical techniques, biodegradation and use as a biosensor for biogenic and synthetic amines, emphasizing various carcinogenicity studies by 2,4-TDA on animals and humans. This review reports some publications of the analysis of body fluid samples of workers from a PU producing factory for presence of TDA and TDI, since TDI gets absorbed into the worker's body, getting metabolized into TDA.
View Article and Find Full Text PDFA method for the selective detection of creatinine is reported, which is based on the reaction between polymerised hemithioacetal, formed by allyl mercaptan, o-phthalic aldehyde, and primary amine leading to the formation of fluorescent isoindole complex. This method has been demonstrated previously for the detection of creatine using creatine-imprinted molecularly imprinted polymers (MIPs) Since MIPs created using traditional methods were unable to differentiate between creatine and creatinine, a new approach to the rational design of a molecularly imprinted polymer (MIP) selective for creatinine was developed using computer simulation. A virtual library of functional monomers was assigned and screened against the target molecule, creatinine, using molecular modelling software.
View Article and Find Full Text PDFFusarium solani, the fungus isolated from polyurethane waste scraps, was studied for its voltammetric response. The peak current values were obtained for different days and were plotted against time. This electrochemical method based on the voltammetric response showed all the four phases of the growth of the fungus.
View Article and Find Full Text PDFWe report an efficient and flexible in vitro method for the isolation of genomic DNA sequences that are the binding targets of a given DNA binding protein. This method takes advantage of the fact that binding of a protein to a DNA molecule generally increases the rate of migration of the protein in nondenaturing gel electrophoresis. By the use of a radioactively labeled DNA-binding protein and nonradioactive DNA coupled with PCR amplification from gel slices, we show that specific binding sites can be isolated from Escherichia coli genomic DNA.
View Article and Find Full Text PDFFadR is an Escherichia coli transcriptional regulator that optimizes fatty acid metabolism in response to exogenously added fatty acids. Many bacteria grow well on long-chain fatty acids as sole carbon source, but at the expense of consuming a useful structural material. Exogenous fatty acids are readily incorporated into membrane phospholipids in place of the acyl chains synthesized by the organism, and phospholipids composed of any of a large variety of exogenously derived acyl chains make biologically functional membranes.
View Article and Find Full Text PDFbeta-Ketoacyl-acyl carrier protein (ACP) synthetase II (KAS II) is one of three Escherichia coli isozymes that catalyze the elongation of growing fatty acid chains by condensation of acyl-ACP with malonyl-ACP. Overexpression of this enzyme has been found to be extremely toxic to E. coli, much more so than overproduction of either of the other KAS isozymes, KAS I or KAS III.
View Article and Find Full Text PDFA pilot, randomized, double-blind, controlled clinical trial to study the effect of exposure to pulsed magnetic fields (PMF) on the rate of healing of plantar ulcers in leprosy patients was undertaken. Twenty patients were randomly allocated to receive standard wound-care treatment (controls) and 20 others received standard treatment plus exposure to PMF (sinusoidal form, 0.95 to 1.
View Article and Find Full Text PDFIndian J Physiol Pharmacol
January 1997
To examine whether the normal Indian standards of Peak Expiratory Flow Rate (PEF) established with the peak flow meter were applicable to PEF values obtained with the Morgan Spirocheck, a comparison was made of PEF(S) measured with the Spirocheck with PEF (M) obtained with a Mini Peak Flow Meter. Data were obtained in 92 subjects (53 males between 20 and 84 years of age and 39 females between 21 and 75 years), comprising staff of the institute, patients undergoing treatment for chronic arthritis, and the accompanying relatives. There was a highly significant correlation between the two values.
View Article and Find Full Text PDFChronic alcoholics were selected from hospitals and A.A. Centres and subjected to different methods of treatment namely, psycho therapy, stereotaxic surgery, nonvolitional biofeedback, Yoga and meditation and extremely low frequency Pulsed Magnetic Field.
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