Publications by authors named "Md Tabish Rehman"

Protein misfolding and aggregation play crucial roles in several neurodegenerative disorders. In this study, sulfobetaine-10 (SB10) has been demonstrated to stabilize proteins and inhibit aggregation by preserving solubility and retaining native-like structures when exposed to reducing agents such as DTT. We have measured changes in turbidity, secondary, tertiary structures, and ThT fluorescence.

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Elaeagnus umbellata is known for its medicinal properties, including its ability to promote wound healing and exhibit antidiabetic and anti-inflammatory properties. In the present study, methanolic leaf and bark extract (MLE and MBE) of E. umbellata was tested for total phenol and flavonoid content and evaluated for antioxidant activity.

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The aerial parts of R.Br. ex Fresen were chromatographically purified, yielding five new compounds: two iridoids (,), one phenylpropanoid glycoside (), and two rhamnosyl esters (,).

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This study presents a simple and efficient synthetic method for preparing a new series of acyclonucleosides derived from 1,4-benzothiazine and 1,4-benzothiazine-1,1-dioxide. These compounds feature the introduction of a 1,2,3-triazole-4-ylmethyl ring as a spacer between the heterocyclic bases and the pseudosugars of acyclovir (ACV) and hydroxybutylguanine (HBG). The acyclonucleosides were synthesized through copper-catalyzed 1,3-dipolar cycloaddition reactions between azides 8a and 8b and the N-propargyl base 7.

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Arsenic (As) stress has been incessantly degrading crop productivity, and thereafter leading to the increasing grave conditions pertaining to the unsustainable food production. In plants, As stress has been considered as one of the serious phytotoxins persisting in the environment, endangering crop shelf life through competing with phosphorus availability. The withholding of As in the staple crop, wheat (Triticum aestivum), is the major concern.

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Sodium lauroyl sarcosinate (SLS), an anionic surfactant is known to solubilize recombinant proteins during purification processes. Though SLS has been shown to induce amyloid fibrillation in proteins, the specific role of SLS in amyloid formation remains less understood. Despite its well-established use in protein solubilization, further research is needed to clarify its potential influence on amyloid fibrillation pathways.

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Article Synopsis
  • The pomegranate peel is rich in phenolic compounds, which have medicinal and commercial value, but their concentrations and biological activities during different ripening stages are not well understood.
  • Extracts from pomegranate peels at various growth stages (40, 80, and 120 days) were tested, with stage 2 and stage 3 showing strong antimicrobial effects.
  • Notably, the stage 2 extract was most effective against lung, breast, and liver cancer cells, and further analysis confirmed γ-Sitosterol as a key compound responsible for its antimicrobial and cytotoxic properties, although more testing is required to confirm these findings.
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The present study examined the vascular effects of peppermint or mint () using an abdominal aortic rings model. Concentration-response curves for mint oil were generated after precontracting isolated mouse aorta with phenylephrine. The effect of different receptor antagonists and ion channel or enzyme inhibitors on the vasorelaxant potential of mint oil were studied.

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The global emergence of New Delhi metallo-β-lactamase-1 (NDM-1) poses a formidable challenge to antibiotic therapy, as it confers resistance to a wide range of β-lactam antibiotics. This study aims to identify potential inhibitors of NDM-1 and thereby restore the effectiveness of the current antibiotics. Employing a comprehensive computational approach integrating molecular docking and molecular dynamics (MD) simulations, a library of phytosterols was screened to identify promising candidates for inhibiting NDM-1 activity.

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The research aims to elucidate how drug interactions affect the activity of L-asparaginase (L-ASNase), an essential enzyme in cancer treatment, especially for acute lymphoblastic leukemia (ALL). Understanding these interactions is crucial for optimizing treatment effectiveness and reducing adverse effects. This study explores the intricate molecular interactions and structural dynamics of L-ASNase upon binding with colchicine.

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Utilizing nanomaterials on the working electrode of sensors enables the fabrication of highly sensitive devices for the detection of various analytes. Herein, a facile synthesis method is used to formulate a grain-like cerium oxide (CeO) nanostructure. The structural features and surface properties of the synthesized CeO nanostructure were studied, which showed that the CeO nanostructure exhibited grain-like morphology, good crystalline structure, and excellent vibrational properties.

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  • Heartland virus (HRTV) is a virus that can affect humans, and right now, there are no medicines to treat it, so doctors provide care to help patients feel better.
  • Researchers are trying to create a new type of vaccine that can protect people from getting infected with HRTV by using special technology to design it.
  • They made a vaccine that includes key parts of the virus, which can help the body build a defense against it, but more tests on animals and in labs are needed to check how well it works and if it's safe.
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  • Bovine serum albumin (BSA) is a useful substance in tissue engineering and pharmaceutical research, derived from cattle blood.
  • This study investigated how different polyols affect the phase separation of a mixture of Triton X-100 (TX-100) and BSA, finding that polyols significantly lower the cloud point (CP) of the mixture, with solubility varying based on the type of polyol used.
  • Results indicated that electrostatic forces are dominant at lower concentrations of polyols, while higher concentrations shift interactions to hydrophobic forces; molecular docking confirmed hydrogen bonds and hydrophobic interactions between TX-100 and BSA.
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Introduction: Antiviral natural products have shown great promise as alternatives to conventional therapies to address drug resistance in hepatitis B virus (HBV). The abundance of bioactive flavonoids and polyphenolic contents in leaves of (yerba mate) warrants assessment of its anti-HBV activity.

Material And Methods: The total ethanol extract of leaves (IP-Ext), including its -hexane (IP-Hex), chloroform (IP-Chl), ethyl acetate (IP-EtAc) and ethanol (IP-EtOH) fractions, was tested for non-hepatocytotoxicity on HepG2 cells (MTT assay) and anti-HBV efficacy on HepG2.

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This study focused on developing novel pyridine-3-carboxamide analogs to treat bacterial wilt in tomatoes caused by Ralstonia solanacearum. The analogs were synthesized through a multistep process and their structures confirmed using spectroscopy. Molecular docking studies identified the most potent analog from the series.

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Organophosphorus are typically hazardous chemicals used in the pharmaceutical, agricultural, and other industries. They pose a serious risk to human life and can be fatal upon direct exposure. Hence, studying the interaction between such compounds with proteins is crucial for environmental, health, and food safety.

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Nitrite monitoring serves as a fundamental practice for protecting public health, preserving environmental quality, ensuring food safety, maintaining industrial safety standards, and optimizing agricultural practices. Although many nitrite sensing methods have been recently developed, the quantification of nitrite remains challenging due to sensitivity and selectivity limitations. In this context, we present the fabrication of enzymeless iron oxide nanoparticle-modified zinc oxide nanorod (α-FeO-ZnO NR) hybrid nanostructure-based nitrite sensor fabrication.

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Article Synopsis
  • * A phytochemical analysis of the most active extract led to the identification of 11 compounds, including phenolic acids, tannins, and flavonoids, which were confirmed using spectroscopic methods.
  • * Molecular docking and dynamics simulations revealed that four compounds were potent inhibitors of Mpro, with one compound showing the highest inhibitory activity and low cytotoxicity in cell lines.
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  • Protein aggregation is a problem in food science, and some food dyes like Sunset Yellow (SY) can make it worse.
  • Researchers tested how SY affects a protein called trypsin at different pH levels (how acidic or basic a solution is).
  • They found that at low pH (2.0), SY causes trypsin to clump together, which could be harmful to health, while this didn't happen at a higher pH (6.0).
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Breast cancer poses a significant global challenge, prompting researchers to explore novel approaches for potential treatments. In this study, we investigated the binding free energy (Δ) of bevacizumab, an anti-cancer therapy targeting angiogenesis through the inhibition of vascular endothelial growth factor (VEGF), with various proto-oncogenes including CDK4, EGFR, frizzled, IGFR, OmoMYC, and KIT. Our in-silico investigation revealed that hydrogen bonding is pivotal in inducing conformational changes within the DNA structure, impeding its replication and preventing cell death.

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  • The study explored how the sodium channel blocker amiloride (AML) interacts with human serum albumin (HSA) using various scientific techniques.
  • Results showed that AML binds specifically to Sudlow's site II on HSA, and the stability of this complex is due to van der Waals forces, hydrogen bonds, and hydrophobic interactions.
  • Minor structural changes in HSA were noted after binding, and simulations confirmed the stability of the HSA-AML complex over time.
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Protein and peptide misfolding is a central factor in the formation of pathological aggregates and fibrils linked to disorders like Alzheimer's and Parkinson's diseases. Therefore, it's essential to understand how food additives, particularly Azorubine, affect protein structures and their ability to induce aggregation. In this study, human serum albumin (HSA) was used as a model protein to investigate the binding and conformational changes caused by azorubine, a common food and drink colorant.

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Antibiotics have revolutionized medicine, saving countless lives since their discovery in the early 20th century. However, the origin of antibiotics is now overshadowed by the alarming rise in antibiotic resistance. This global crisis stems from the relentless adaptability of microorganisms, driven by misuse and overuse of antibiotics.

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