Publications by authors named "Radhakrishnan Narayanaswamy"

This study explores the larvicidal potential of methanolic flower extracts from Phoenix pusilla (Pp-Fe), its major compound, and malathion (MLT), against laboratory strain (LS) and field strain (FS) of Aedes aegypti, the dengue mosquito vector. We identified thirty-one derivatives, with methyl oleate (MO) comprising 28.5% of Pp-Fe.

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The histone-lysine N-methyltransferase 2D (KMT2D), tumor suppressor gene which is the major component of histone H3K4 mono-methyltransferase in mammals and has significant role in regulation of a gene which are frequently mutated that lead to many different types of cancers that include non-Hodgkin lymphoma, medulloblastoma, prostate carcinoma, renal carcinoma, bladder carcinoma and lung carcinoma. KMT2D gene epigenetic alterations in histone methylation play a significant role for the initiation and progression of cancers from pre-cancerous lesions, yet its complete function in oncogenesis remains unsolved. KMT2D deficiency - loss are thought of initial mediators of cancer development and cell migration such as B-cell lymphoma, medulloblastoma, melanoma, pancreas and lung cancer.

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Article Synopsis
  • Human nephrin (hNeph) is crucial for the structure and function of podocytes, influencing cell behavior and the integrity of the slit diaphragm.
  • This study used molecular docking to analyze interactions between hNeph/mNeph and 13 specific human proteins, assessing their docking efficiencies and physicochemical properties.
  • Five proteins showed significant interactions with hNeph/mNeph, suggesting potential implications for managing kidney diseases.*
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  • The study explores how specific human leukocyte antigen (HLA) alleles influence the risk of skin reactions to certain drugs by examining their interaction patterns.
  • Four drugs (phenytoin, amoxicillin, aceclofenac, and ciprofloxacin) were tested for docking behavior against four HLA alleles using computational methods, revealing insights into their binding energies and potential toxicity.
  • Results indicate that amoxicillin and ciprofloxacin may cause liver damage, and phenytoin showed the lowest binding energy with the tested HLA alleles, which may lead to skin-related adverse effects.
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A four-leaf water clover ( species) has been reported to exhibit various biological activities. In the present study, we aimed to evaluate 23 selected constituents of a four-leaf water clover ( species) as potent inhibitory agents of human acetyl cholinesterase (hAchE), carbonic anhydrase II (hCA-II), and protein tyrosine phosphatase 1B (hPTP-1B) using an method. The 23 selected constituents of the four-leaf water clover ( species) were studied on the docking behavior of hAchE, hCA-II, and hPTP-1B by using the Webina docking method.

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  • Human intelectin-1 (hITL-1) is linked to various diseases, and this study explores its role as a modulator in metabolic syndrome.
  • Eight human proteins were selected for protein-protein docking analysis using the HDOCK method, and their physicochemical properties were examined with the ProtParam tool.
  • The study found that hNF kappa B had the highest docking score with hITL-1, indicating its potential significance in understanding hITL-1's role in metabolic syndrome.
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Background Sivelestat is a potent and specific neutrophil elastase inhibitor. It is clinically used in treating lung injury and respiratory distress syndrome. This engaged us to undertake the present study in which sivelestat was studied as an anti-inflammatory and anti-viral agent.

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Background Numerous pharmacological activities have been reportedin species. In the present investigation, we aimed to evaluate 26 selected constituents of as potent inhibitory agents of human HMG-CoA reductase (hHMGR), human inducible nitric oxide synthase (hiNOS), and human squalene synthase (hSQS) using the in silico method. Methodology Twenty-six selected constituents of were investigated based on the docking behavior of three target enzymes, namely hHMGR, hiNOS, and hSQS, using the Cdocker method (Discovery Studio 3.

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Background (Stinging nettle)has been reported to exhibit various pharmacological activities. In the present study, we aimed to evaluate 24 selected constituents of as potent inhibitory agents of human carbonic anhydrase II (hCA-II), human 11 beta-hydroxysteroid dehydrogenases type 1 (h11beta-HSD1), and human dual specificity phosphatase (hCDC25B) using method. Methodology The 24 selected constituents of (Stinging nettle) were studied on the docking behavior of hCA-II, h11beta-HSD1, and hCDC25B by using the Webina docking method.

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Background (Licorice) has been known for its various biological activities. In the current investigation, we aimed to evaluate 11 (10 natural and one synthetic) selected constituents of as potent modulatory agents of human superoxide dismutase (hSOD), human phosphodiesterase-9 (hPDE 9) and human dipeptidyl peptidase-4 (hDPP 4) using method. Methodology The 11 selected constituents of (Licorice) were investigated on the docking behaviour of hSOD, hPDE 9 and hDPP 4 by using the PatchDock method.

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Current vector control strategies based on synthetic chemicals are not eco-friendly against non-target organisms; hence, alternative approaches are highly required. Commercially purchased oil of Mentha spicata (Spearmint) and Eucalyptus citriodora (Citriodora) were examined against the medical pest Cx. quinquefasciatus (Say) and their non-toxicity on the aquatic species was evaluated.

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(Arecaceae), commonly known as "small wild date palm", is regarded as one of the underutilized fruit crops in South India. Methanol extract of ripened fruits (PPRF) was analyzed for in vitro porcine pancreatic alpha-amylase (PPAA) and rat small intestine alpha-glucosidase (RIAG) inhibition activities, and through gas chromatography-mass spectrometry (GC-MS) analysis. The GC-MS analysis showed the presence of 25 phytoconstituents from PPRF which was further assessed on the docking behavior of five targeted enzymes diabetes mellitus (DM) namely (i) human aldose reductase, (ii) protein tyrosine phosphatase 1B, (iii) pancreatic alpha-amylase, (iv) peroxisome proliferator-activated receptor gamma, and (v) dipeptidyl peptidase IV by using the AutoDock Vina method.

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Nitrification inhibitors are recognized as a key approach that decreases the denitrification process to inhibit the loss of nitrogen to the atmosphere in the form of NO. Targeting denitrification microbes directly could be one of the mitigation approaches. However, minimal attempts have been devoted towards the development of denitrification inhibitors.

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Article Synopsis
  • * Combining the methanol extract with the biocontrol agent Trichoderma viride resulted in significant antifungal activity (82.92%) and reduced disease incidence in tomato plants affected by Fusarium wilt.
  • * The research also highlighted that the combined treatment led to higher levels of defense enzymes in the plants, suggesting that their increased presence plays a critical role in enhancing disease resistance.
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Mosquitoes are the potential vectors of several viral diseases such as filariasis, malaria, dengue, yellow fever, Zika fever and encephalitis in humans as well as other species. Dengue, the most common mosquito-borne disease in humans caused by the dengue virus is transmitted by the vector . Fever, chills, nausea and neurological disorders are the frequent symptoms of Zika and dengue.

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Kidney stone is a major global menace that demands research on nonsurgical treatment involving biological compounds for the benefit of the patients. Among the biological extracts, citric acid is traditionally used to dissolve kidney stones. The current research focuses on evaluating the in vitro anti-urolithiatic activity and in silico study of ethanolic extract of Citrus sinensis (ECS) peel against c: phosphoethanolamine cytidylyltransferase (PCYT).

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Embelin has been reported to possess variety of pharmacological activities such as androgenic antagonists, antiangiogenic, antibacterial, anticancer, anticonvulsant, antidiabetic, antidepressant, antihelmintic, antifertility, antihyperlipidemic, anti-inflammatory, antimalarial, antimitotic, antiobesity and antioxidant properties. The current research work aimed to study the hypoglycemic effect of embelin-chitosan nanoparticles (ECNPs) diabetic rats provoked by streptozotocin (STZ). Embelin nanoparticles (ENPs) were created by combining chitosan, a natural biopolymer, and glutaric acid, a new cross-linker.

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Cissus rotundifolia has been reported to possess various biological activities such as anti-diabetic, anti-fertility, anti-hyperlipidemic, anti-malarial, anti-osteoporotic, and anti-parasitic activities. Therefore in the present study, eleven selected constituents of Cissus rotundifolia which includes aconitic acid, astragalin, acteoside, aliospiroside A, beta amyrin, bergenin, formononetin, gallic acid, isovitexin, isoorientin, and isoquercitrin were studied on the docking behavior of human neutrophil elastase (HNE), matrix metalloproteinases (MMP 2 and MMP 9), and tyrosinase by using PatchDock method. Furthermore, molecular physicochemical, bioactivity score/drug-likeness, ADME (absorption, distribution, metabolism, and excretion), and toxicity analyses were also carried out using Molinspiration, Swiss ADME, and ProTox-II methods, respectively.

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Fab. is a polyphagous pest causing damage to many agriculture crops leading to yield loss. Recurrent usage of synthetic pesticides to control this pest has resulted in resistance development.

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Article Synopsis
  • * GC-MS analysis identified nine major compounds, with HDa showing the highest peak area percentage (14.63%), and indicated that these extracts and their derivatives had significant larvicidal effects that varied with dosage and larval stage.
  • * Sublethal doses of the extracts affected larval development, adult lifespan, and enzyme activity, resulting in notable morphological changes in gut tissues, highlighting their potential as effective pest management agents in agriculture and public health.
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The present investigation aimed to determine the fungal toxicity of (My-It) against the dengue mosquito vector L. and its non-target impact against the aquatic predator . Lethal concentrations (LC and LC) of My-It were observed in 2.

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Larval toxicity of ethanolic extract of C. parvula (Ex-Cp) was prominent in the second and the third instars at the maximum lethal dosage of 100 ppm with 98 and 97 % mortality rate respectively. The LC and LC was displayed at 43 ppm and 88 ppm dosage respectively.

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Herein, we have meticulously derived the nanosized fluorescent aggregates from pyrene Schiff base (PS) in DMSO:water (10:90) ratio. The aggregation property of PS molecule was characterized by SEM and TEM measurements, revealed the aggregated particles are in spherical shape with ~3 nm in size. Moreover, aggregates exhibit a high fluorescence quantum yield (48%) which was effectively used for the in vitro bioimaging of two different cancer cells such as A549 and MCF-7 cells in which it exhibiting excellent biocompatibility.

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The current study explores the photo-protective effect of asperyellone (AY) (a fungal secondary metabolite), assessed under in vitro condition using human dermal fibroblast cell line. AY was isolated from Aspergillus sp. during the resting phase and purified.

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Background: The phytoconstituents phytic acid and 4-hydroxyisoleucine have been reported to posses various biological properties.

Objective: This prompted us to carry out the docking study on these two ligands (phytic acid & 4-hydroxyisoleucine) against eleven targeted enzymes.

Materials And Methods: Phytic acid & 4-hydroxyisoleucine were evaluated on the docking behaviour of cyclooxygenase-2 (COX-2), microsomal prostaglandin E synthase-2 (mPGES-2), tyrosinase, human neutrophil elastase (HNE), matrix metalloproteinase (MMP 2 and 9), xanthine oxidase (XO), squalene synthase (SQS), nitric oxide synthase (NOS), human aldose reductase (HAR) and lipoxygenase (LOX) using Discovery Studio Version 3.

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