2,475 results match your criteria: "Bharathiar University; Thiruvalluvar University.[Affiliation]"

Leveraging deep transfer learning and explainable AI for accurate COVID-19 diagnosis: Insights from a multi-national chest CT scan study.

Comput Biol Med

December 2024

Department of Integrative Biotechnology, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon, 16419, Gyeonggi-do, Republic of Korea. Electronic address:

The COVID-19 pandemic has emerged as a global health crisis, impacting millions worldwide. Although chest computed tomography (CT) scan images are pivotal in diagnosing COVID-19, their manual interpretation by radiologists is time-consuming and potentially subjective. Automated computer-aided diagnostic (CAD) frameworks offer efficient and objective solutions.

View Article and Find Full Text PDF

The hydrogen shift reactions of peroxy radicals derived from the ȮH-initiated oxidation of three atmospherically important monoterpenes, limonene, α-pinene, and β-pinene, have been studied. The Bell-Evans-Polanyi relationship (BEPR), Marcus cross relationship (MCR), and Robert-Steel relationship (RSR) are employed to study the factors that contribute to the kinetics of the H-shift reactions. Our results show distinct kinetic behaviors based on the size of the transition-state ring, the functional group present at the H atom abstraction site, and the type of carbon-centered radical formed.

View Article and Find Full Text PDF

Cadmium oxide nanoparticles (CdO-NPs) play an important role in health applications due to their antibacterial properties. However, ecotoxicological investigations of these NPs and their adverse effects on aquatic organisms are necessary to protect the environment. Zebrafish is widely used as a model organism to explore toxic effects at multiple levels of integration.

View Article and Find Full Text PDF

Effects of particle size and aging on heavy metal adsorption by polypropylene and polystyrene microplastics under varying environmental conditions.

Chemosphere

December 2024

Department of Environmental and Sustainable Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand; Professor Aroon Sorathesn Center of Excellence in Environmental Engineering, Chulalongkorn University, Bangkok 10330, Thailand. Electronic address:

Article Synopsis
  • Microplastics (MPs) are a significant environmental concern due to their ability to absorb heavy metals like lead (Pb) and copper (Cu), which can harm aquatic life and human health.
  • This study examines how the size and aging of MP types (polystyrene and polypropylene) affect their capacity to adsorb these heavy metals, finding that smaller and older MPs are more effective adsorbents.
  • Various environmental factors, such as pH and temperature, influence the adsorption processes, with electrostatic interactions and surface characteristics playing key roles in the binding of heavy metal ions to the microplastics.
View Article and Find Full Text PDF

Fluoride (F) is a major groundwater contaminant spread across the world. In excess concentrations, F can be detrimental to living beings. F exposure is linked to cellular redox dyshomeostasis, leading to oxidative stress-mediated pathologies including heart dysfunction.

View Article and Find Full Text PDF

The lysosomal cysteine peptidase Cathepsin B is identified as a pivotal contributor to cancer development. In the pursuit of discovering less toxic inhibitors for Cathepsin B, various organic compounds have undergone thorough investigation and are being studied at the moment in clinical studies for cancer treatment. Notably, curcumin and resveratrol emerge as prominent candidates.

View Article and Find Full Text PDF

Virtual Probing on the Influence of Ca and Zn Bound S100A8 and S100A9 Proteins Towards their Interaction Against Pattern Recognition Receptors Aggravating Rheumatoid Arthritis.

Cell Biochem Biophys

November 2024

Department of Pharmaceutical Technology, University College of Engineering, Bharathidasan Institute of Technology campus, Anna University, Tiruchirappalli, 620 024, Tamil Nadu, India.

Danger-associated molecular patterns (DAMPs) are released on the onset of tissue injury or death, which tend to trigger innate immunity and regulate various immune pathways. Among the various DAMP molecules, S100A8 and S100A9 belonging to Ca binding proteins with EF-hands and Zn ion binding sites have been implicated in aggravating the pathogenesis of rheumatoid arthritis (RA), upon interaction with pattern recognition receptors (PRR) such as TLR4, RAGE and CD36 receptors. Thus, the present study aims to assess the effect of Ca or Zn ions on the interaction of S100A8 and S100A9 proteins towards the PRRs.

View Article and Find Full Text PDF
Article Synopsis
  • The text discusses the synthesis and characterization of three new fluorescence probes derived from fluorenone azine, focusing on their structural properties and the methods used for their analysis.
  • These probes exhibit unique photophysical behaviors due to hydrogen bonding interactions that allow for processes like excited state intramolecular proton transfer (ESIPT) and twisted intramolecular charge transfer (TICT).
  • The study highlights the probes' potential applications in bioimaging and viscosity detection, specifically demonstrating that probe 3a is effective for measuring intercellular viscosity in a Caenorhabditis elegans model.
View Article and Find Full Text PDF

Copper oxide nanoparticles induced reactive oxygen species generation: A systematic review and meta-analysis.

Chem Biol Interact

January 2025

Molecular Toxicology Laboratory, Department of Biotechnology, Bharathiar University, Coimbatore, 641 046, India. Electronic address:

Copper oxide nanoparticles (CuO NPs) are widely employed in various industrial and biomedical applications owing to their enhanced physicochemical characteristics. However, concerns regarding their adverse effects on biological systems upon entering the environment remain unexplored. The generation of reactive oxygen species (ROS) is one of the primary mechanisms in CuO NPs induced toxicity.

View Article and Find Full Text PDF

A new series of acyl hydrazones have been synthesized from 4-chloro-8-nitro-1,2-dihydroquinoline-3-carbaldehyde. These compounds were characterized using various spectroscopic techniques. Density functional theoretical (DFT) studies were conducted to understand the correlation between electronic parameters and biological activity.

View Article and Find Full Text PDF

In the current study, coal fly ash contaminated soil was collected in and around Mettur Thermal Power Station, Salem district, Tamil Nadu. The metal concentrations present in the coal fly ash soil samples were analyzed and also used for the isolation of bacteria. The isolates were screened for their multi-metal resistance against three heavy metals (Cu, Ag and Pb) and plant growth-promoting traits (siderophore, phosphate solubilization, IAA, cellulase, HCN, and ammonia production).

View Article and Find Full Text PDF

As the demand for sustainable energy continues to rise, electrocatalysis has become increasingly prominent in the advancement of clean energy technologies. By scrutinizing the material to function as a multifunctional catalyst, the effectiveness of energy conversion processes is significantly enhanced. This study focuses on harnessing graphene/WS van der Waals heterostructures for overall water splitting and fuel cell applications, using transition metals (TMs) from Sc-Zn as single-atom catalysts (SACs).

View Article and Find Full Text PDF

Notch1 and Notch2, transmembrane receptors belonging to the Notch family, are pivotal mediators of intercellular communication and have profound implications including cell fate determination, embryonic development, and tissue homeostasis in various cellular processes. Despite their structural homology, Notch1 and Notch2 exhibit discrete phenotypic characteristics and functional nuances that necessitate their individualized targeting in specific medical scenarios. Aberrant Notch signaling, often driven by the dysregulated activity of one receptor over the other, is implicated under various pathological conditions.

View Article and Find Full Text PDF
Article Synopsis
  • Lichen, particularly Usnea baileyi, is traditionally used in indigenous medicine, and the active compound Usnic acid shows potential for treating various conditions, but its safety and mechanisms need more research.
  • The study successfully isolated Usnic acid from lichen cultures and confirmed its presence using advanced techniques like chromatography and spectroscopy.
  • Usnic acid demonstrated acute toxicity in zebrafish, while also showing antimicrobial, antioxidant, and anticancer properties against skin cancer cells, indicating that further research could lead to new cancer treatments derived from natural sources.
View Article and Find Full Text PDF
Article Synopsis
  • A novel disulfide linked probe called HTP was developed for the quick detection of copper (Cu) ions, using a reaction between specific chemical compounds and characterized through various spectroscopy techniques and X-ray diffraction.
  • The probe exhibits aggregation induced emission (AIE) properties, showing a color change from weak green to intense yellow when binding with Cu ions, making it sensitive to very low concentrations (0.97 nM).
  • HTP's reversible interaction with Cu ions can be reset using cysteine, which allows for practical applications in molecular logic gates and detection methods like paper strips and water testing.
View Article and Find Full Text PDF

Detecting epigenetically modified (EM) bases is crucial for disease detection, biosensing, and DNA sequencing. Two-dimensional P-doped SiBN and BN sheets are used as sensing substrates in density functional theory (DFT) studies. Both the sheets are doped with a phosphorous atom at various atomic sites to examine the sheet's potential in detecting 5-hydroxymethylcytosine (5hmc), 5-methylcytosine (5mc), 7-methylguanine (7mg) and 8-oxoguanine (8oxg) bases.

View Article and Find Full Text PDF

Plastic recycling has become more important than ever as the globe struggles with growing environmental issues. This research explores the significant environmental impact of recycling plastic and its growing relevance. The pervasive material known as plastic presents a complex risk to both human health and ecosystems in contemporary life.

View Article and Find Full Text PDF

PGPR has a higher potential impact on agricultural crops. It enhances plant growth and development in a variety of adverse environmental conditions, including biotic and abiotic stresses. The PGPR is commercially vital since it is more efficient, safe for the environment, and beneficial to the economy.

View Article and Find Full Text PDF

A strategic review of STAT3 signaling inhibition by phytochemicals for cancer prevention and treatment: Advances and insights.

Fitoterapia

December 2024

Molecular Toxicology Laboratory, Department of Biotechnology, Bharathiar University, Coimbatore 641 046, India. Electronic address:

Cancer remains a significant global health concern. The dysregulation of signaling networks in tumor cells greatly affects their functions. This review intends to explore phytochemicals possessing potent anticancer properties that specifically target the STAT3 signaling pathway, elucidating strategies and emphasizing their potential as promising candidates for cancer therapy.

View Article and Find Full Text PDF

Designing low cost, highly active and efficient non-noble metal bifunctional electrocatalysts with remarkable operational reliability for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is indispensable for large-scale water electrolysis and the development of clean energy conversion technologies. Herein, we decorated a two-dimensional (2D) selenium-blended zirconium dioxide (Se-ZrO) on the surface of a nitrogen-doped carbon heterostructure (Se-ZrO@NC), which was derived from Zr-metal-organic frameworks (Zr-MOFs), and loaded it on a stainless-steel mesh electrode. Accordingly, phenomenal electrocatalytic performance was observed for the Se-ZrO@NC-loaded electrode with a minimum overpotential of 48 mV for the HER and 251 mV for the OER at 10 mA cm current density in acidic and alkaline mediums, respectively.

View Article and Find Full Text PDF

Cancer, a multifactorial pathological condition, is primarily caused due to mutations in multiple genes. Hepatocellular carcinoma (HCC) is a form of primary liver cancer that is often diagnosed at the advanced stage. Current treatment strategies for advanced HCC involve systemic therapies which are often hindered due to the emergence of resistance and toxicity.

View Article and Find Full Text PDF

Recent advancements in sensory research have brought to light the intricate relationship between taste perception and the oral microbiota, prompting investigations into their influence on human health, particularly in the context of dietary preferences and obesity. This review aims to update the current understanding of how oral microbiota influence taste perception and dietary choices, elucidating shared metabolic pathways between food processing and oral bacteria. Further, this review outlines the mechanisms underlying taste perception, emphasising the role of taste receptors and taste buds in shaping sensory experiences influenced by genetic and environmental factors.

View Article and Find Full Text PDF