40 research outputs found
Inappropriate ICD Discharge Related to Electrical Muscle Stimulation in Chiropractic Therapy: A Case Report
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Additional file 1: of Trade in medicines and the public's health: a time series analysis of import disruptions during the 2015 India-Nepal border blockade
Time-series analyses of trade in health commodities, 2011-2016. (PDF 801Â kb
Effective <i>Agrobacterium</i>-mediated genetic transformation of okra (<i>Abelmoschus esculentus</i> L.) and generation of RNAi plants resistant to <i>Begomovirus</i> infecting okra
Okra is an important vegetable crop of the Malvaceae family and is infected by varying numbers of viruses of the genus Begomovirus. Regardless of the importance of the crop, very little consideration has been given to its genetic improvement. RNA interference (RNAi), a potent biotechnological tool, is known to control Begomovirus in many crops. For the implementation of successful RNAi, there is a need for an efficient genetic transformation system in okra. In the present study, we developed a procedure for Agrobacterium-mediated tissue culture–dependent regeneration of okra plants for the application of RNAi. Eleven transgenic okra RNAi plants were regenerated by utilising hypocotyls as explants. Transformed plants were screened with hygromycin at the regeneration stage and the presence of transgenes (AC1, AC2 & AC4 codes for replication-associated protein, transcriptional activator protein and suppressor of PTGS) in putative transformed plants was confirmed by polymerase chain reaction (PCR). Wild and transgenic lines were challenged with a dimeric Begomovirus clone or viruliferous whiteflies and the level of resistance was estimated with quantitative real-time reverse transcriptase PCR (qRT-PCR) by utilising viral gene–specific primers. The resistant transgenic lines accumulated very low titres of viral gene products according to the qRT-PCR assays compared to the control plants. This is the first report of tissue culture–mediated RNAi-derived resistance in okra against Begomovirus infection.</p
Additional file 2: of Trade in medicines and the public's health: a time series analysis of import disruptions during the 2015 India-Nepal border blockade
Residual calculation for penicillin and streptomycin exports. (XLSX 54Â kb
Methane Adsorption and Separation in Slipped and Functionalized Covalent Organic Frameworks
Understanding atomic-level mechanisms
of methane adsorption in
nanoporous materials is of great importance to increase their methane
storage capacity targeting energy sources with low carbon emission.
In this work, we considered layered covalent organic frameworks (COFs)
with low density and revealed the effect of slipping and chemical
functionalization on their methane adsorption and separation properties.
We performed grand canonical Monte Carlo simulations studies of methane
(CH<sub>4</sub>) adsorption and carbon-dioxide:methane (CO<sub>2</sub>:CH<sub>4</sub>) separation in various slipped structures of TpPa1,
TpBD, PI-COFs, and functionalized TpPa1 and TpBD COFs as well. We
observed that the slipping improves the total CH<sub>4</sub> uptake
by 1.1–1.5 times, while functionalization does not have a significant
effect on CH<sub>4</sub> uptake. We also observed improvement in CO<sub>2</sub>:CH<sub>4</sub> selectivity due to slipping, whereas functionalization
results in decrease in the selectivity. In all considered COFs, we
found the highest CH<sub>4</sub> delivery capacity of 141 cm<sup>3</sup> (STP) cm<sup>–3</sup> at 65 bar and selectivity of ∼25
at 1 bar in 60-AB slipped structure of TpBD COF. We analyzed the molecular
details of CH<sub>4</sub> adsorption using binding energy, heat of
adsorption, pore characteristics, and expectation energy landscape.
Our results show that COFs with increasing profile of heat of adsorption
with pressure have the higher CH<sub>4</sub> delivery capacity. In
these COFs, we found proximity (∼4–6 Å) of CH<sub>4</sub> binding sites, resulting in higher CH<sub>4</sub>–CH<sub>4</sub> interactions and hence the increasing profile of CH<sub>4</sub> heat of adsorption
Direct Heteroarylation of Tautomerizable Heterocycles into Unsymmetrical and Symmetrical Biheterocycles via Pd/Cu-Catalyzed Phosphonium Coupling
The direct cross-coupling of tautomerizable heterocycles with various unfunctionalized heteroarenes has been achieved through PyBroP-mediated and Pd/Cu-catalyzed sequential C–OH/C–H activation. The methodology allows a facile entry into novel diazine-azole biheterocyclic frameworks. Moreover, an unprecedented Pd-catalyzed phosphonium homocoupling of tautomerizable heterocycles was also developed to afford a direct synthetic route to symmetrical 1,2-, 1,3-, and 1,4-bidiazine units
Synthesis of Plantazolicin Analogues Enables Dissection of Ligand Binding Interactions of a Highly Selective Methyltransferase
A convergent strategy for the synthesis of truncated analogues of plantazolicin (PZN), a member of the thiazole/oxazole-modified microcin (TOMM) class of natural products, has been developed. These <i>N</i>-terminal mono-, tri-, and pentazole substructures of PZN were utilized to probe the substrate requirements and thermodynamic ligand binding parameters of an unusually selective PZN methyltransferase (BamL) by isothermal titration calorimetry. Our results demonstrate that the presence of a single <i>N</i>-terminal azole permits efficient processing by BamL; however, the substrate binding becomes stronger with increased polyazole chain length
Additional file 1: of Evaluating availability and price of essential medicines in Boston area (Massachusetts, USA) using WHO/HAI methodology
Supplementary details on survey methods, data and statistical analyses. (PDF 874Â kb
Pd/Cu-Catalyzed C–H Arylation of 1,3,4-Thiadiazoles with (Hetero)aryl Iodides, Bromides, and Triflates
The direct C–H arylation of 1,3,4-thiadiazoles
with a wide range of (hetero)aryl iodides, bromides, and triflates
is described using a Pd/Cu-catalyzed protocol. The methodology is
compatible with substrates possessing electron-donating or electron-withdrawing
substituents and also tolerates sterically hindered aryl halides.
The utility of the developed protocol is demonstrated by a one-pot
C–H arylation-Suzuki coupling sequence
ATM deficiency does not impact on the accumulation of Top1-single-strand breaks.
<p>(<b>a</b>) Human lymphoblastoid cells (LCLs) derived from a normal individual ‘WT’, spinocerebellar ataxia with axonal neuropathy ‘SCAN1’, or ataxia telangiectasia ‘A–T’ patients, and mouse embryonic fibroblasts (MEFs) or quiescent cortical astrocytes from control ‘WT’ or <i>Tdp1-/-</i> mice were incubated with DMSO (Mock) or 30 µM camptothecin (CPT) for 40 min with or without pre-incubation with 10 µM ATM inhibitor KU-55933 (ATMi) for 2 hours at 37°C. Top1-single-strand breaks ‘Top1-SSBs’ were quantified by alkaline comet assays (ACAs). Mean tail moments were calculated for 50 cells/sample/experiment and data are the average of <i>n</i> = 3 biological replicates ± s.e.m. (<b>b</b>) Top1-SSBs were analysed in quiescent cortical astrocytes derived from wild-type ‘WT’, <i>Atm-/-</i> or <i>Tdp1-/-</i> mice following incubation with DMSO (Mock) or 30 µM camptothecin (CPT) and quantified as described above.</p