Publications by authors named "Addyaa Shanker"

Cannabis sativa L. is an important medicinal plant with high commercial value. In recent years, the research interest in cannabidiol (CBD) and terpene-rich cannabis has been rapidly expanding due to their high therapeutic potential.

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Catharanthus roseus leaves have been traditionally described to possess potent antidiabetic activity and some leaf-specific alkaloids, including vindoline, have been studied for their antidiabetic potential. The aim of the present study was to validate the antidiabetic property of the plant with special reference to vindoline. An Ayurveda-based method was used to prepare the Swaras [leaf juice extract (LJE)] of three familial C.

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Background: Delirium after cardiac surgery is common, morbid, and costly, but may be prevented with risk stratification and targeted intervention. In this study, we aimed to identify protein biomarkers and develop a predictive model for postoperative delirium in older patients undergoing cardiac surgery.

Methods: SomaScan analysis of 1305 proteins in the plasma from 57 older adults undergoing cardiac surgery requiring cardiopulmonary bypass was conducted to define delirium-specific protein signatures at baseline (preoperative baseline timepoint [PREOP]) and postoperative day 2 (POD2).

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Pollutants such as microplastics (MPs) are detrimental to the health of humans, animals and reduce the quality of the environment. These particles can be ingested and accumulate in marine biota through the food chain leading to adverse effects on various physiological processes. Sharks, which typically occupy higher trophic levels in the marine food chain, may exhibit the highest accumulation of MPs.

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This study is the first to conduct a sero-surveillance of Bovine Tropical Theileriosis (BTT) caused by the protozoan parasite Theileria annulata (T. annulata) using a recombinant Tams1 protein-based dot-ELISA in cattle, and to compare its efficacy with plate-ELISA, single PCR, nested PCR, and blood microscopy. The goal was to identify the most effective method for the early and accurate detection of theileriosis, which significantly impacts livestock through reduced milk yield and increased mortality.

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As data grows exponentially across diverse fields, effectively leveraging big data has become increasingly crucial. In data science and computational genomics, however, minority groups, including African Americans, are significantly underrepresented, coupled with the lack of resources and infrastructure in minority-serving institutions. This paper summarizes the second phase of our funded project that aims to enhance the data science capacity of Meharry Medical College (MMC), a Historically Black College/University (HBCU), by providing training and fostering collaborations between data scientists and researchers in basic science and biomedical fields.

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Many viral proteins form biomolecular condensates via liquid-liquid phase separation (LLPS) to support viral replication and evade host antiviral responses, and thus, they are potential targets for designing antivirals. In the case of nonenveloped positive-sense RNA viruses, forming such condensates for viral replication is unclear and less understood. Human noroviruses (HuNoVs) are positive-sense RNA viruses that cause epidemic and sporadic gastroenteritis worldwide.

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Purpose: To investigate the utility of a 15-minute online module to improve the self-confidence and knowledge of neurology trainees when screening an EEG.

Methods: We developed a fast, convenient, and accessible 15-minute online module to teach basic concepts of EEG screening using a five-step approach. To assess the efficacy of the module among neurology trainees, three surveys were developed.

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Context: 1,2,4-Oxadiazole serves as a fundamental building block driving advancements across diverse scientific and technological arenas, contributing to the creation of innovative materials for various applications including devices, sensors, medications, agrochemicals, and biomedical instruments. Employing density functional theory (DFT) methods, we investigate the impact of different conformers of an oxadiazole substituted derivative, specifically 3,5-bis[4-(4-methylphenylcarbonyloxy)phenyl]-1,2,4-oxadiazole, in both monomeric and stacked configurations (dimeric and tetrameric). We analyze the electronic structures of various conformers, including assessment of HOMO-LUMO energy gaps, to detect the influence of diverse substituents and stacking arrangements.

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Hydroxypropyl cellulose (HPC) is known for its ability to form cholesteric liquid crystalline phases displaying vivid structural colors. However, these vibrant colors tend to fade over time when the material dries. This issue is a major bottleneck to finding practical applications for these materials.

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Article Synopsis
  • * The authors suggest new metrics to measure how well vaccines stimulate CD8 T cells and identify key viral parts that trigger immune response, considering genetic differences among people and viral changes.
  • * The proposed methods were tested successfully using proteins from the Ebola virus and SARS-CoV-2 vaccines, showing the effectiveness of their approach.
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Inadvertent lead malposition (ILM) of a temporary pacing wire is a rare complication that can occur during pacemaker insertion. We report a case of a 40-year-old man who presented late following an inferior ST segment elevation myocardial infarction. Temporary cardiac pacing was performed for symptomatic complete heart block.

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Article Synopsis
  • * The study introduces a novel counter-selection method using phage display to identify covalent macrocyclic ligands that can disrupt protein-protein interactions, specifically targeting the SARS-CoV-2 Spike-ACE2 interaction.
  • * The identified covalent inhibitors showed strong antiviral effects, demonstrating their permanence due to the covalent binding mechanism, highlighting the potential for developing long-lasting drugs that interfere with critical protein interactions.
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Introduction: Natural killer (NK) cells are innate lymphoid cells capable of directly killing target cells while modulating immune effector responses. Despite their multifunctional capacities, a limited understanding of their plasticity and heterogeneity has impeded progress in developing effective NK cell-based cancer therapies. In this study, we investigated NK cell tissue heterogeneity in relation to their phenotype and effector functions against lung tumors.

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Padmaka (Prunus cerasoides Don.), or wild Himalayan cherry, is a deciduous tree from the Rosaceaae family. The Prunus genus has 400-430 species, including shrubs and trees.

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Microsatellites, or simple sequence repeats (SSRs), are repetitive DNA sequences typically composed of 1-6 nucleotides. These repetitive sequences are found in almost all genomes, including chloroplasts and mitochondria, and are widely distributed throughout the genomes. Microsatellites are highly polymorphic, and their length may differ from species to species.

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Context.—: The use of hormonal therapy and gender-affirming surgery in the transgender community has been rising during the last several years. Although it is generally safe, hormonal therapy's link to testicular cancer remains uncertain.

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Background: Youth hospitalized in inpatient child psychiatry units have a high prevalence of trauma and this population may have been especially affected by the pandemic.

Objective: This study examined the clinical and sociodemographic characteristics of hospitalized youth with a history of trauma prior to, during, and after the pandemic. Additionally, youth who reported a trauma history were compared to those who denied having a trauma history.

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The exotic polarization configurations of topologically protected dipolar textures have opened new avenues for realizing novel phenomena absent in traditional ferroelectric systems. While multiple recent studies have revealed a diverse array of emergent properties in such polar topologies, the details of their atomic and mesoscale structures remain incomplete. Through atomic- and meso-scale imaging techniques, the emergence of a macroscopic ferroelectric polarization along both principal axes of the vortex lattice while performing phase-field modeling to probe the atomic scale origins of these distinct polarization components is demonstrated.

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Article Synopsis
  • Quantitative phase imaging (QPI) captures the wavefront of light to create topographical and optical density maps of translucent microscopic objects.
  • The researchers demonstrate QPI using a silicon nitride hyperboloid metalens at the tip of a coherent fiber bundle, employing chromatic aberrations and spectral multiplexing for phase recovery from various defocus planes simultaneously.
  • This innovative approach simplifies phase imaging for endoscopy by eliminating the need for multiple acquisitions or complex alignment, enabling real-time operation with a compact metalens design.
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The 2004 tsunami and coastal subsidence resulted in 97% mangrove loss in the Nicobar Islands (India), leading to major social-ecological change. We assessed how the Nicobar mangrove social-ecological system (SES) responded to the 2004 event using the adaptive cycle (AC) framework. We describe the changes across AC phases (collapse-Ω, reorganisation-α, growth-r, and conservation-K) concerning various capital types (natural, built, human, social), connectedness and resilience.

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  • The study explores the effective degradation of hexabromocyclododecane (HBCD), a harmful pollutant, using a biochar and sulfur-doped copper oxide (S-CuO) nanocomposite created through eco-friendly synthesis methods.
  • The BC@S-CuO nanocomposite demonstrated the highest photocatalytic activity, achieving 92% degradation of HBCD in 120 minutes, with optimal conditions found at specific pH levels and catalyst loading amounts.
  • The research highlights the potential for BC@S-CuO to be reused multiple times, along with its implications for pollution control, especially concerning the leaching of HBCD from expanded polystyrene materials.
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Herein, nitrogen-doped nickel hexacyanoferrate (N@NiHCF) nanoparticles were prepared via co-precipitation and incorporated in guar gum (GG)-Xanthan gum (Xa) based-polymeric-matrix (GGXa@N@NiHCF) for efficient removal of rose bengal (RB) dye and nonyl phenol (NP) pollutants under sunlight. PXRD, FESEM, XPS, and FTIR analysis verified successful integration of N@NiHCF nanoparticles into GGXa matrix. Scherrer and Williamson-Hall equations estimated average-crystallite sizes of GGXa@N@NiHCF nanoparticles to be 16.

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