Publications by authors named "Mishra L"

Severe sepsis is cognate with life threatening multi-organ dysfunction. There is a disturbance in endocrine functions with alterations in several hormonal pathways. It has frequently been linked with dysfunction in the hypothalamic pituitary-adrenal axis (HPA).

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The ZrO-embedded carboxy-functionalized -BN composite, combined with graphene oxide (GO), formed a novel BN-COOH@ZrO/GO composite. Structural characterization through IR, Raman spectroscopy, powder X-ray diffraction, and X-ray photoelectron spectroscopy supported the successful preparation of the composite, while scanning electron microscopy and transmission electron microscopy revealed its surface morphology and the presence of component materials. UV-vis spectroscopy (solid state) further supported these findings.

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Advanced Glycation End (AGE) products are one such factor that accumulates during aging and age-related diseases. However, how exogenous AGE compounds cause aging is an area that needs to be explored. Specifically, how an organ undergoes aging and aging-related phenomena that need further investigation.

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Tetralogy of Fallot (TOF) is the most common congenital cyanotic heart disease and is characterized by an antero-superior deviation of the infundibular septum with a consequent large malaligned ventricular septal defect (VSD) and a pulmonary and sub-pulmonary (infundibular) stenosis. Surgical repair has been the cornerstone of treatment that is electively performed early in their lives between 3 and 6 months of age. With advancements in transcatheter interventions, the complete percutaneous repair of TOF, a complex disease with multiple treatable lesions, is becoming a conceivable possibility.

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Nanoconjugates are promising for therapeutic drug delivery and targeted applications due to the numerous opportunities to functionalize their surface. The present study reports the synthesis of 5-fluorouracil (5-FU)-entrapped polyvinylpyrrolidone (PVP) nanoconjugates, precisely 5-FU-PVP and 5-FU-PVP-Au, and the evaluation of protein aggregation inhibition efficiency. The 5-FU-loaded polymer nanoconjugates were functionalized with gold nanoparticles and analyzed using characterization techniques like dynamic light scattering, UV-visible spectroscopy, Fourier-transform infrared spectroscopy, and zeta potential analysis.

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Neutrophils are vital for immunity against Mycobacterium tuberculosis (Mtb), the causative agent of tuberculosis (TB), yet their heterogeneous nature suggests a complex role in TB pathogenesis. Here, we identify two distinct neutrophil populations based on CD101 expression, highlighting their divergent roles in TB. CD101-negative (CD101) neutrophils, which resemble immature, pro-inflammatory granulocytes, exhibit reduced Mtb phagocytosis compared to their mature, CD101-positive (CD101) counterparts.

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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.

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This paper offers a pioneering in-depth exploration of applying residual neural networks to approximate Erdélyi-Kober fractional derivatives and establishes a parameter upper bound for these networks. We validate this method using the variational iteration formula to obtain the exact solution of a differential equation. The resulting structure from the variational iteration method serves as a basis for showcasing how residual neural networks can effectively estimate these equations.

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The surface integrity of gutta-percha cones is a crucial factor in the success of endodontic procedures. Disinfecting solutions play a pivotal role in sterilizing gutta-percha cones, but their influence on gutta-percha surface topography remains a subject of concern. This systematic review aimed to present a qualitative synthesis of available laboratory studies assessing the influence of disinfecting solutions on the surface topography of gutta-percha and offers insights into the implications for clinical practice.

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Normal physiological functions as well as regulatory mechanisms for various pathological conditions depend on the activity of enzymes. Thus, determining the activity of enzymes is crucial for monitoring the physiological metabolism and diagnosis of diseases. Traditional enzyme detection methods are inefficient for detection, which have different limitations, such as high cost, laborious, and inevitable invasive procedures, low spatio-temporal resolution, weak anti-interference ability, and restricted scope of application.

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Chronic inhalation intake of radionuclides is possible for radiation workers in the nuclear industry. The International Commission on Radiological Protection (ICRP) provides organ retention fractions as well as daily urinary and fecal excretion for chronic intake of various radionuclides. In this study, organ retention fractions and daily urinary excretion for chronic intake were estimated for constant chronic intake (CCI) and realistic chronic intake (RCI) scenarios.

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The binding interactions between bovine serum albumin (BSA) and three pyridine derivatives, i.e., 2-(5-bromopyridin-3-yl) acetic acid (L1), 3-bromo-5-nitropyridine (L2) and 2-chloro-4-nitropyridine (L3), have been carried out using UV-Vis and fluorescence spectroscopic methods.

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Bioassay of radiation workers handling actinides in powder form is carried out annually under routine monitoring program. In case of routine monitoring, as the day of intake is unknown, it is assumed that intake has occurred at the midpoint of monitoring interval. However, an uncertainty is introduced in intake estimation due to this assumption.

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Article Synopsis
  • The study highlights the emerging interest in G-quadruplexes (GQs) beyond cancer and neurodegenerative diseases, focusing on their roles in viral genomes, particularly in human pathogens like the Japanese encephalitis virus (JEV).
  • Researchers identified eight potential GQ-forming motifs in JEV that are important for the virus's replication and assembly and confirmed their stability and ability to form GQs through various assays.
  • The compound BRACO-19 was found to bind effectively to these GQs, exhibiting antiviral properties by reducing viral replication and protein expression, underscoring the potential of GQs as targets for antiviral strategies against JEV.
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Article Synopsis
  • Large language models learn language patterns through statistical methods, while ontologies provide symbolic knowledge that can enhance these models; both can work together effectively.
  • The MaterioMiner dataset links materials mechanics concepts with textual data, featuring 179 classes annotated by three raters across four publications, leading to a total of 2191 curated entities.
  • The study also evaluates annotation consistency among raters and demonstrates how pre-trained language models can be fine-tuned for named entity recognition, paving the way for advances in materials language models and knowledge graph creation.
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Article Synopsis
  • Formyl peptide receptors (FPR), especially Fpr1 and Fpr2, are important in directing immune cell movement towards bacterial signals but their role in tuberculosis (TB) immunity has not been well studied.
  • Research showed that levels of Fpr1 and Fpr2 increased in the lungs and blood of mice, rabbits, and humans with TB, indicating they might play a significant role in the immune response against Mycobacterium tuberculosis (Mtb).
  • The study found that while Fpr2 deletion had no effect on TB outcomes, Fpr1-deficient mice had better control of bacterial growth, highlighting the unique functions of Fpr1 in immune response and the need for more research to fully understand its impact on TB
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Mycobacterium tuberculosis (Mtb) infection induces a marked influx of neutrophils into the lungs, which intensifies the severity of tuberculosis (TB). The metabolic state of neutrophils significantly influences their functional response during inflammation and interaction with bacterial pathogens. However, the effect of Mtb infection on neutrophil metabolism and its consequent role in TB pathogenesis remain unclear.

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Obesity and fatty liver diseases-metabolic dysfunction-associated steatotic liver disease (MASLD) and metabolic dysfunction-associated steatohepatitis (MASH)-affect over one-third of the global population and are exacerbated in individuals with reduced functional aldehyde dehydrogenase 2 (ALDH2), observed in approximately 560 million people. Current treatment to prevent disease progression to cancer remains inadequate, requiring innovative approaches. We observe that Aldh2 and Aldh2Sptbn1 mice develop phenotypes of human metabolic syndrome (MetS) and MASH with accumulation of endogenous aldehydes such as 4-hydroxynonenal (4-HNE).

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Catabolite repression is a mechanism of selectively utilizing preferred nutrient sources by redirecting the metabolic pathways. Therefore, it prevents non-essential energy expenditure by repressing the genes and proteins involved in the metabolism of other less favored nutrient sources. Catabolite repressor protein (CRP) is a chief mediator of catabolite repression in microorganisms.

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Aim And Background: Ultrasound-guided arterial catheterization is a frequently performed procedure. Additional techniques such as acoustic shadowing-assisted ultrasound may be useful in improving success rate. This systematic review aimed to assess the efficacy of acoustic shadowing assisted ultrasound for arterial catheterization.

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A comprehensive study on the photo-excited relaxation dynamics in semiconducting perovskite quantum dots (PQDs) is pivotal in realizing their extensive potential for optoelectronics applications. Among different competing photoinduced relaxation kinetics, energy transfer and charge transfer (CT) in PQDs need special attention, as they often influence the device efficacy, particularly with the donor-acceptor hybrid architecture. In this work, we explore a detailed investigation into photoinduced CT dynamics in mixed halide undoped CsPb(Br/Cl)3 and Mn2+ doped CsPb(Br/Cl)3 PQDs with a quinone molecule, p-benzoquinone (BQ).

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Formyl peptide receptors (FPR), part of the G-protein coupled receptor superfamily, are pivotal in directing phagocyte migration towards chemotactic signals from bacteria and host tissues. Although their roles in acute bacterial infections are well-documented, their involvement in immunity against tuberculosis (TB) remains unexplored. This study investigates the functions of Fpr1 and Fpr2 in defense against (Mtb), the causative agent of TB.

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Two pyrrolo-based compounds, 1H-pyrrolo[3,2-b]pyridine-3-carboxylic acid (L1) and 1H-pyrrolo[3,2-c]pyridine-4-carboxylic acid (L2), were employed for the detection of bovine serum albumin (BSA) by UV-Vis and fluorescence spectroscopic methods in phosphate buffer solution (pH = 7). In the presence of L1 and L2, the fluorescence emission of BSA at 340 nm was quenched and concomitantly a red-shifted emission band appeared at 420 nm (L1)/450 nm (L2). The fluorescence spectral changes indicate the protein-ligand complex formation between BSA and L1/L2.

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With climate change, droughts are expected to be more frequent and severe, severely impacting plant biomass and quality. Here, we show that overexpressing the Arabidopsis gene AtFtsHi3 (FtsHi3OE) enhances drought-tolerant phenotypes without compromising plant growth. AtFtsHi3 encodes a chloroplast envelope pseudo-protease; knock-down mutants (ftshi3-1) are found to be drought tolerant but exhibit stunted growth.

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