Lab on a bead with oscillatory centrifugal microfluidics for fast and complete mixing enables fast and accurate biomedical assays.

Rapid mixing and precise timing are key for accurate biomedical assay measurement, particularly when the result is determined as the rate of a reaction: for example rapid immunoassay in which the amount of captured target is kinetically determined; determination of the concentration of an enzyme or enzyme substrate; or as the final stage in any procedure that involves a capture reagent when an enzyme reaction is used as the indicator. Rapid mixing and precise timing are however difficult to achieve in point-of-care devices designed for small sample volumes and fast time to result. By using centrifugal microfluidics and transposing the reaction surface from a chamber to a single mm-scale bead we demonstrate an elegant and easily manufacturable solution.

A concise review on recent advances in catalytic asymmetric hydrogenation.

Accounts on the recent (over the past 10 years) catalytic asymmetric hydrogenation reaction-based achievements with different catalysts to generate natural products and synthetic targets such as fragrances, pharmaceutical agents, and agrochemicals are mentioned in this present concise review. Mechanistic steps, chemoselectivity with higher functional group tolerance by employing transition metal-based chiral catalysts (Ir-, Rh-, Ni-, Ru-, Fe-, Mn-, Pd-, Co-, and Zn-based organometallic chiral complexes), and biocatalysts and their importance on the genesis of chirality coupled with higher turnover numbers are also described.

Kounis Syndrome: A Sting to the Heart.

A 67-year-old woman experienced pruritus, an urticarial rash, and acute, pressure-like chest pain following an insect sting. Initial electrocardiographic findings were notable for ST-segment elevations in the inferior leads without reciprocal changes, but a follow-up electrocardiogram showed pronounced ST-segment elevations in the inferior leads with reciprocal changes. Her troponin I level peaked at 3,053 pg/mL, and she was transferred to a large academic center for percutaneous coronary intervention.

Correction: Elucidation of hydrogen bonding formation by a computational, FT-IR spectroscopic and theoretical study between benzyl alcohol and isomeric cresols.

[This corrects the article DOI: 10.1039/C5RA26298D.].

Prevalence and clinical associations of mitral and aortic regurgitation in patients with aortic stenosis.

Background: Most guidelines directing clinicians to manage valve disease are directed at single valve lesions. Limited data exists to direct our understanding of how concomitant valve disease impacts the left ventricle (LV).

Methods: We identified 2817 patients with aortic stenosis (AS) from the echocardiography laboratory database between September 2012 and June 2018 who had a LV ejection fraction (EF) ≥50%.

Rapid C Hyperpolarization of the TCA Cycle Intermediate α-Ketoglutarate via SABRE-SHEATH.

α-Ketoglutarate is a key biomolecule involved in a number of metabolic pathways─most notably the TCA cycle. Abnormal α-ketoglutarate metabolism has also been linked with cancer. Here, isotopic labeling was employed to synthesize [1-C,5-C,D]α-ketoglutarate with the future goal of utilizing its [1-C]-hyperpolarized state for real-time metabolic imaging of α-ketoglutarate analytes and its downstream metabolites .

Neurotoxicity of pesticides - A link to neurodegeneration.

Parkinson's disease (PD) is a neurodegenerative disorder which mainly targets motor symptoms such as tremor, rigidity, bradykinesia and postural instability. The physiological changes occur due to dopamine depletion in basal ganglia region of the brain. PD aetiology is not yet elucidated clearly but genetic and environmental factors play a prominent role in disease occurrence.

Low temperature-synthesized MgAl O :Eu nanophosphors and their structural validations using density functional theory: photoluminescence, photocatalytic, and electrochemical properties for multifunctional applications.

A low temperature-assisted and oxalyl dihydrazide fuel-induced combustion synthesized series of uncalcined MgAl O :Eu nanophosphors showed an average crystallite size of ~20 nm, and bandgap energy (E ) of 4.50-5.15 eV, and were validated using density functional theory and found to match closely with the experimental values.

Sagittal Balance Correction in Cervical Compressive Myelopathy: Is it Helpful?

Background: Laminectomy with lateral mass and transfacet fixation are widely accepted surgical techniques for cervical compressive myelopathy (CCM).

Objective: To evaluate multilevel fixation with additional fixation of C7-T1 transfacet junction may help achieve better surgical outcome both in short- and long-term follow-up.

Material And Methods: Based on utilizing C7-T1 transfacet junction fixation, 102 consecutive patients undergoing surgery for CCM were divided into Group A: cervical laminectomy with lateral mass fixation only, and Group B: cervical laminectomy and lateral mass fixation including C7-T1 transfacet junction in fixation.

Molecular Testing for and Mutations from Cytoscrapes of Thyroid Fine Needle Aspirates: A Single-Center Pilot Study.

Context And Aim: Molecular testing of thyroid FNA has been advocated in the indeterminate categories of The Bethesda System for Reporting Thyroid Cytopathology (TBSRTC) 2018. The utility of cytoscrapes of thyroid FNA samples for V600E and mutations was evaluated in this pilot study.

Methods And Materials: Thyroid FNA samples between 2015 and 2018 from TBSRTC categories 3-6 were included.

and antioxidant and anticancer activity profiles of urea and thiourea derivatives of 2,3-dihydro-1-inden-1-amine.

Synthesis of a series of new urea and thiourea compounds have been accomplished by the reaction of 2,3-dihydro-1-inden-1-amine with various phenyl isocyanates and isothiocyanates. These compounds were evaluated for their antioxidant activity by using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical and nitric oxide (NO) radical scavenging assay methods including IC values. Some of the compounds exhibited potential activity in the two tested methods.

Structural, magnetic, grain and grain boundary mediated conduction features of low dimensional LaFeOnanoparticles.

A detailed investigation of crystal structure, magnetic and electrical conduction properties of a low dimensional LaFeOis reported. The sample is synthesized by Sol-Gel method with a low preparation temperature. Synchrotron x-ray diffraction, Raman and FTIR spectroscopy methods were used to establish the structural phase and vibrational modes present in the sample.

Synthesis, spectral characterization, docking studies and biological activity of urea, thiourea, sulfonamide and carbamate derivatives of imatinib intermediate.

A series of new urea/thiourea derivatives 3a-j were synthesized by simple addition reaction of functionalized phenyl isocyanates/isothiocyanates 2a-j with N-(5-amino-2-methylphenyl)-4-(3-pyridyl)-2-pyrimidinamine (imatinib intermediate) (1) in the presence of 1,4-dimethyl piperazine (DMPZ) as a base, and another series of new sulfonamide/carbamate derivatives 5a-k were synthesized by reacting 1 with various substituted aromatic sulfonyl chlorides 4a-f and aromatic/aliphatic chloroformates 4g-k in the presence of DMPZ as a base. The title compounds 3a-j and 5a-k were characterized by IR, H, C NMR and mass spectral data. Antimicrobial, antioxidant and in silico molecular docking studies were made against aromatase.

Skin delivery of epigallocatechin-3-gallate (EGCG) and hyaluronic acid loaded nano-transfersomes for antioxidant and anti-aging effects in UV radiation induced skin damage.

The present work attempts to develop and statistically optimize transfersomes containing EGCG and hyaluronic acid to synergize the UV radiation-protective ability of both compounds, along with imparting antioxidant and anti-aging effects. Transfersomes were prepared by thin film hydration technique, using soy phosphatidylcholine and sodium cholate, combined with high-pressure homogenization. They were characterized with respect to size, polydispersity index, zeta potential, morphology, entrapment efficiency, Fourier Transform Infrared Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC), X-ray Diffraction (XRD), in vitro antioxidant activity and ex vivo skin permeation studies.

Non-Invasive Pregnancy Diagnosis in Big Cats using the PGFM (13,14-dihydro-15-keto-PGF2α) Assay.

Non-invasive monitoring of hormones using feces has become a vital tool for reproductive management and reliable pregnancy diagnosis in big cats. Previous studies described the PGF2α metabolite (PGFM) as an indicator of pregnancy in various feline species. The present study aimed to standardize pregnancy detection in big cats like the tiger (Panthera tigris), jaguar (Panthera onca) and lion (Panthera leo) using fecal samples.

Effect of pranayama and suryanamaskar on pulmonary functions in medical students.

Background: Pranayama improved lung functions in numerous studies. Yoga involve isometric contraction and improves skeletal muscle strength. Yoga training improves the strength of expiratory as well as inspiratory muscles.

Preformed beading and boxing appliance.

Conventional beading and boxing procedure is time consuming and involves application of heat that might distort green stick compound used for border molding. Earlier studies regarding beading and boxing methods have shown usage of various materials that were disposable and that cannot be recycled. To reduce the time consumed for beading and boxing procedure and to make this procedure cost-effective by using recyclable beading material, "Preformed boxing appliance" with moldable clay meant for beading the secondary impression was used.

Multidrug-resistant Vibrio cholerae O1 in Belgaum, south India.

An outbreak of acute diarrhoea occurred in the Belgundi area (population 3896) of Belgaum Taluka (population 815 581) in Karnataka, South India, in June 2010. An estimated 16.22 % of people were affected and 0.

Increasing burden of hospital acquired infections: resistance to cephalosporin antibiotics among klebsiella and Escherichia coli.

The drug susceptibility pattern of klebsiella species and Escherichia coli to cephalosporins was examined in the year 2004 and 2005. A total of 180 klebsiella and 220 E coli in 2004 and 95 klebsiella and 210. E coli in the year 2005, isolated from various clinical specimens were studied.

Comparison of disc diffusion methods for the detection of extended-spectrum Beta lactamase-producing enterobacteriaceae.

Background: Resistance to broad-spectrum β lactams, mediated by extended-spectrum β lactamases (ESBLs), is an increasing problem world wide. This resistance poses problems for in vitro testing and reporting. Increased prevalence of ESBLs among Enterobacteriaceae creates a great need for laboratory testing methods that will accurately identify their presence.