Publications by authors named "Radhakanta Koner"

Developing a two-dimensional (2D) ultrathin metal-organic framework plays a significant role in energy conversion and storage systems. This work introduced a facile strategy for engineering ultrathin NiMn-MOF nanosheets on Ni foam (NF) via in situ conversion from NiMn-layered double hydroxide (LDH). The as-synthesized LDH-derived NiMn-MOF (LDH-D NiMn-MOF) nanosheet exhibited an overpotential of 350 mV to drive a current density of 100 mA cm during oxygen evolution reaction (OER) owing to its better redox activity, hierarchical architecture, and intercalating ability.

View Article and Find Full Text PDF

Serpentine soils are characterized by high concentrations of heavy metals (HMs) and limited essential nutrients with remarkable endemic plant diversity, yet the mechanisms enabling plant adaptation to thrive in such harsh environments remain largely unknown. Full-length 16S rRNA amplicon sequencing, coupled with physiological and functional assays, was used to explore root-associated bacterial community composition and their metabolic and ecological functions. The results revealed that serpentine plant species exhibited significantly higher metal transfer factor values compared to non-serpentine plant species, particularly evident in Bidens pilosa, Miscanthus floridulus, and Leucaena leucocephala.

View Article and Find Full Text PDF

Alkhumra fever is a viral disease caused by the Alkhumra hemorrhagic fever virus (AHFV). It belongs to family , genus . AHFV is primarily transmitted to humans through the bite of infected ticks, for example, .

View Article and Find Full Text PDF

Monkeypox (Mpox) has once again been designated a Public Health Emergency of International Concern (PHEIC) as of August, 2024. The severity of the disease is underscored by its significant mortality rate, and unfortunately, there are no targeted therapeutics currently available for this viral infection. Management relies on preventive measures and the use of existing smallpox vaccines due to their genetic similarity to the Mpox virus.

View Article and Find Full Text PDF

The aberrant accumulation of cytotoxic protein aggregates is a hallmark of various neurodegenerative and non-neurodegenerative ailments, necessitating the development of sensitive and selective tools for their detection. Herein, we report a series of morpholine-anchored fluorescent probes, denoted as SC-nmor (n = 2, 4, 6), designed for facile visualization of protein aggregates. These probes display notable changes in their photophysical properties upon binding with protein aggregates, owing to their high sensitivity to the fibrillar microenvironment.

View Article and Find Full Text PDF

Stimuli-responsive supramolecular assemblies have recently gained extensive attention in the biomedical field. Research focusing mainly on bioinspired functional supramolecular materials has shown great promise for potential drug delivery applications. Such materials can be engineered into 'smart' materials by utilizing various external stimuli such as pH, heat, light, and magnetic fields.

View Article and Find Full Text PDF

Herein, we unveiled a regio- and diastereoselective synthesis of cyclobutylated phenothiazines, a unique class of structural congeners of phenothiazines visible-light-irradiated intermolecular [2 + 2]-cycloaddition reaction, from readily available naphthoquinones, 2-aminothiophenols, and styrenes, either in a two-step or three-component coupling process. By varying substitutions in all three coupling partners, a library of cyclobutylated phenothiazines, including late-stage derivatization with five commercial drugs, has been realized with up to 97% isolated yield. In contrast to the reported pathways, the developed [2 + 2]-photocycloaddition seems to proceed a 'photoinduced-electron-transfer' (PET) mechanism, which is well corroborated with the experimental observations, Rehm-Weller equation, and computation studies.

View Article and Find Full Text PDF

Transfluthrin (TFL) is a rapid-acting pyrethroid insecticide, commonly used worldwide, however its overuse and or misuse has been associated with adverse effects on human health. This study was designed to investigate the impact of TFL on fertility and pregnancy in Sprague-Dawley rats exposed orally and by inhalation. In this study, 48 adult Sprague-Dawley rats of 6-8 months age group were randomly selected with equal numbers of males and females.

View Article and Find Full Text PDF

The failure of slopes due to various natural processes or extensive mining activities is a common problem that has an adverse impact on the environment and may result in severe casualties. Despite taking all the geotechnical considerations for the safe design of slopes, there could be unpredictable slope failure because of unexpected weather, seismic activities, or involvement of unidentified geological structures. Thus, continuous monitoring, forecasting, and warning of slope failures are imperative to save lives and property from devastation.

View Article and Find Full Text PDF

The fleeting existence of aryl carbanion intermediates in the bulk phase prevents their direct observation and spectroscopic measurement. In sharp contrast, we report the direct interception of such unstable species at the air-water interface of microdroplets. We observed the transformation of three types of aryl acids (benzoic, phenylsulfinic, and phenylboronic acids) into phenyl carbanion (Ph) in water microdroplets, as examined by mass spectrometry.

View Article and Find Full Text PDF

The visualization and spatiotemporal monitoring of endogenous esterase activity are crucial for clinical diagnostics and treatment of liver diseases. Our research adopts a novel substrate hydrolysis-enzymatic activity (SHEA) approach using dicyanoisophorone-based fluorogenic ester substrates ) to evaluate esterase preferences on diverse substrate libraries. Esterase-mediated hydrolysis yielded fluorescent with a nanomolar detection limit .

View Article and Find Full Text PDF

Background: A significant subset of individuals with epilepsy fails to respond to currently available antiepileptic drugs, resulting in heightened mortality rates, psychosocial challenges, and a diminished quality of life. Genetic factors, particularly within the gene, and the pro-inflammatory cytokine response is important in intricating the drug resistance in idiopathic epilepsy cases. In this extended study, we determined the correlation of rs6732655A/T single nucleotide polymorphism to understand the causative association of gene with epilepsy drug resistance and inflammatory response.

View Article and Find Full Text PDF

Topological insulators are insulators in the bulk but feature chiral energy propagation along the boundary. This property is topological in nature and therefore robust to disorder. Originally discovered in electronic materials, topologically protected boundary transport has since been observed in many other physical systems.

View Article and Find Full Text PDF

The formulation and delivery of macromolecules through the oral route pose considerable challenges due to factors such as large molecular weight, pH sensitivity, and limited formulation approaches. This challenge is compounded if the drug is poorly permeable, necessitating innovative drug delivery strategies. Vancomycin, a widely prescribed glycopeptide antibiotic, has an oral bioavailability of less than 10%, leading to predominantly intravenous administration and potential patient discomfort.

View Article and Find Full Text PDF

The air-breathing magur catfish (Clarias magur) are frequently challenged with high environmental pollutants, including that of various metal nanoparticles (NPs) in their natural habitats. Heat shock proteins (HSPs) are essential molecular chaperones for preserving intracellular protein homeostasis in eukaryotic cells. In aquatic animals, HSPs are known to play important defensive roles associated with various environmental stress-related cellular damages.

View Article and Find Full Text PDF

Background: The ubiquitously expressed Guanine nucleotide exchange factor, RAPGEF1 (C3G), is essential for early development of mouse embryos. It functions to regulate gene expression and cytoskeletal reorganization, thereby controlling cell proliferation and differentiation. While multiple transcripts have been predicted, their expression in mouse tissues has not been investigated in detail.

View Article and Find Full Text PDF

Heavy metals (HMs) contained terrestrial ecosystems are often significantly display the antibiotic resistome in the pristine area due to increasing pressure from anthropogenic activity, is complex and emerging research interest. This study investigated that impact of chromium (Cr), nickel (Ni), cobalt (Co) concentrations in serpentine soil on the induction of antibiotic resistance genes and antimicrobial resistance within the native bacterial community as well as demonstrated their metabolic fingerprint. The full-length 16S-rRNA amplicon sequencing observed an increased abundance of Firmicutes, Actinobacteriota, and Acidobacteriota in serpentine soil.

View Article and Find Full Text PDF

Water microdroplets promote unusual chemical reactions at the air-water interface. However, the interfacial structure of water microdroplets and its potential influence on chemical processes are still enigmatic. Here, we present evidence of in-droplet fractionation of water isotopologues.

View Article and Find Full Text PDF

Mud volcanoes are dynamic geological features releasing methane (CH), carbon dioxide (CO), and hydrocarbons, harboring diverse methane and hydrocarbon-degrading microbes. However, the potential application of these microbial communities in chlorinated hydrocarbons bioremediation purposes such as trichloroethylene (TCE) has not yet been explored. Hence, this study investigated the mud volcano's microbial diversity functional potentiality in TCE degradation as well as their eco-physiological profiling using metabolic activity.

View Article and Find Full Text PDF

ConspectusOne-dimensional organic nanotubes feature unique properties, such as confined chemical environments and transport channels, which are highly desirable for many applications. Advances in synthetic methods have enabled the creation of different types of organic nanotubes, including supramolecular, hydrogen-bonded, and carbon nanotube analogues. However, challenges associated with chemical and mechanical stability along with difficulties in controlling aspect ratios remain a significant bottleneck.

View Article and Find Full Text PDF

Background: Cyclin-dependent kinase 4/6 (CDK4/6) inhibitors in combination with traditional endocrine therapy (ET) are now the recommended first-line treatment for hormone receptor (HR)-positive and HER2-negative metastatic breast cancer (MBC). However, the benefits of adding CDK4/6 inhibitors to ET in HER2-low-positive and HER2-0 subgroups remain unclear. We aimed to assess the effectiveness of CDK4/6 inhibitors in combination with ET in patients with HR-positive, HER2-low-positive and HER2-0 MBC.

View Article and Find Full Text PDF

The synthesis of a Schiff base-based chemosensor, denoted as HL, was accomplished through the condensation reaction of Isophthalohydrazide and 2,6-dihydroxybenzaldehyde in an ethanol solvent. The resulting compound was further characterized using H and C nuclear magnetic resonance (NMR) spectroscopy, as well as high-resolution mass spectrometry (HRMS). Extensive research has been conducted on several facets of metal sensing phenomena, revealing that the Schiff base HL demonstrates discerning and expeditious fluorescence sensing characteristics specifically towards Al (III) in acetonitrile.

View Article and Find Full Text PDF
Article Synopsis
  • Evidence suggests that geothermal fumaroles significantly influence the diversity and metabolic functions of microbial communities in various environments, particularly along the rock-soil-plant continuum.
  • The study found that Proteobacteria were the most common bacteria found in all sample types, with distinct archaeal communities in rock and soil samples, and different bacterial communities in plant samples.
  • Functional analysis revealed higher sulfur oxidation in rock and soil samples, while rhizosphere samples showed increased iron oxidation and nitrate respiration, highlighting the complex interactions between geothermal fumaroles and microbial life in these ecosystems.
View Article and Find Full Text PDF

In 2022, just before the COVID-19 pandemic ended, many countries noticed a viral monkeypox outbreak. Monkeypox virus, a zoonotic pathogen, causes a febrile illness in humans and resembles smallpox. Prevention strategies encompass vaccination, strict infection control measures, and avoiding contact with infected persons.

View Article and Find Full Text PDF