Publications by authors named "Ritesh Tiwari"

Background And Purpose: The study explores basil seed mucilage as a bioadhesive carrier for naproxen sodium, demonstrating its ability to enhance solubility when administered rectally. The mucilage, derived from seeds, showed bioadhesive properties and thermal stability, as confirmed by FTIR spectroscopy and X-ray diffraction analysis.

Experimental Approach: Microspheres were prepared using a double emulsion solvent evaporation technique, varying polymer ratios to optimize drug delivery.

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Epigenetic clocks are age predictors that use machine-learning models trained on DNA CpG methylation values to predict chronological or biological age. Increases in predicted epigenetic age relative to chronological age (epigenetic age acceleration) are connected to aging-associated pathologies, and changes in epigenetic age are linked to canonical aging hallmarks. However, epigenetic clocks rely on training data from bulk tissues whose cellular composition changes with age.

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A large body of evidence has shown a direct link between arsenic exposure and drug resistance to Leishmania parasites against antimonial preparations in visceral leishmaniasis (VL) hyper-endemic regions, especially in India and its sub-continent. However, the implicated roles of arsenic on the VL host, pathophysiological changes, and immune function have not yet been clarified, particularly at the reported concentration of arsenic in the VL hyper-endemic area of Bihar, India. Herein, we exposed the mouse VL model to arsenic (0.

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Colorectal disease is the third most prevelant cancer in both men and women, with an expected 106,180 new cases of colon cancer and 44,850 new cases of rectal cancer as per American Cancer Society. Targeted medicine delivery is vital in the treatment of colon disorders because it delivers long-term therapeutic results with little side effects. Natural polymer is biocompatible and biodegradable, which enables safety, improves storage, and physiological stability, it is utilized as drug delivery vehicles and has made great strides in recent years.

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Mammalian female reproductive lifespan is typically significantly shorter than life expectancy and is associated with a decrease in ovarian NAD+ levels. However, the mechanisms underlying this loss of ovarian NAD+ are unclear. Here, we show that CD38, an NAD+ consuming enzyme, is expressed in the ovarian extrafollicular space, primarily in immune cells, and its levels increase with reproductive age.

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Psoriasis is a complex autoimmune skin condition with a significant genetic component. It causes skin inflammation and is characterized by flaky, silvery reddish spots that can worsen with age. This condition results from an impaired immunological response of T-cells and affects 2-5% of the global population.

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Background: The current research focused on the improvement of drug entrapment efficiency and release study of hydrophilic drug through polymer complextation.

Objective: Ionotropic gelation technique was utilised for the preparation of Polyelectrolyte complex microbeads of Vildagliptin using Sodium alginate and Eudragit RL100 and their performance was optimized by Central composite design.

Methods: Fourier Transform Infrared Spectroscopy, Scanning Electron Microscope, Differential Scanning Calorimetry, particle size, Drug Entrapment Efficiency, X-ray diffraction and drug release at 10hr were chosen for evaluating formulated microbeads.

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Hexavalent chromium is a highly soluble environmental contaminant. It is a widespread anthropogenic chromium species that is 100 times more toxic than trivalent chromium. Leather, chrome plating, coal mining and paint industries are the major sources of hexavalent chromium in water.

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Post-translational modifications, such as lysine acetylation, regulate the activity of diverse proteins across many cellular compartments. Protein deacetylation in mitochondria is catalyzed by the enzymatic activity of the NAD-dependent deacetylase sirtuin 3 (SIRT3), however it remains unclear whether corresponding mitochondrial acetyltransferases exist. We used a bioinformatics approach to search for mitochondrial proteins with an acetyltransferase catalytic domain, and identified a novel splice variant of ELP3 (mt-ELP3) of the elongator complex, which localizes to the mitochondrial matrix in mammalian cells.

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Visceral leishmaniasis or Kala-azar is a vector-borne disease caused by an intracellular parasite of the genus leishmania. In India, Amphotericin B (AmB) is a first-line medication for treating leishmaniasis. After a large-scale resistance to pentavalent antimony therapy developed in Bihar state, it was rediscovered as an effective treatment for Leishmania donovani infection.

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The polyelectrolyte complexes (PECs) are adaptable constructs shaped by electrostatic interaction between biopolymers with inverse charges. Polyelectrolyte edifices comprise an exceptional class of polymeric mixtures comprising of polyions with inverse charges, which can be charged either cationically or anionically. Significant advancement has been made in the course of recent years towards new medication conveyance frameworks.

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A material consisting of highly dispersed Cu nanoclusters anchored on nanocrystalline SiO2-MnO2 has been prepared, and was found to act as a bifunctional catalyst for the one-step conversion of glycerol to acrylic acid using H2O2. Under optimized conditions a glycerol conversion of 77.1%, with 74.

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Binding of Ag by B cells leads to signal transduction downstream of the BCR and to delivery of the internalized Ag-BCR complex to lysosomes where the Ag is processed and presented on MHC class II molecules. T cells that recognize the peptide-MHC complexes provide cognate help to B cells in the form of costimulatory signals and cytokines. Recruitment of T cell help shapes the Ab response by facilitating isotype switching and somatic hypermutation, and promoting the generation of memory cells and long-lived plasma cells.

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