scholarly journals Evidence for the Anti-NAFLD Effectiveness of Chlorogenic Acid as a HAT Inhibitor Using In Vivo Experiments Supported by Virtual Molecular Docking

2021 ◽  
pp. 100055
Author(s):  
Jing Xu ◽  
Liangqin Gao ◽  
Huiqing Liang ◽  
Shaoliang Zhang ◽  
Penghua Lai ◽  
...  
Keyword(s):  
Molecular Docking ◽  
Chlorogenic Acid ◽  
In Vivo Experiments ◽  
Hat Inhibitor

Potential Bioactive glycosylated flavonoids as SARS-CoV-2 Main protease Inhibitors: A molecular Docking Study

2020 ◽  
Author(s):  
sabri ahmed cherrak ◽  
merzouk hafida ◽  
mokhtari soulimane nassima
Keyword(s):  
Molecular Docking ◽  
Data Bank ◽  
Docking Study ◽  
Docking Studies ◽  
Molecular Docking Study ◽  
Chemical Structures ◽  
In Vivo Experiments ◽  
Main Protease

A novel (COVID-19) responsible of acute respiratory infection closely related to SARS-CoV has recently emerged. So far there is no consensus for drug treatment to stop the spread of the virus. Discovery of a drug that would limit the virus expansion is one of the biggest challenges faced by the humanity in the last decades. In this perspective, testing existing drugs as inhibitors of the main COVID-19 protease is a good approach.Among natural phenolic compounds found in plants, fruit, and vegetables; flavonoids are the most abundant. Flavonoids, especially in their glycosylated forms, display a number of physiological activities, which makes them interesting to investigate as antiviral molecules.The flavonoids chemical structures were downloaded from PubChem and protease structure 6lu7 was from the Protein Data Bank site. Molecular docking study was performed using AutoDock Vina. Among the tested molecules Quercetin-3-O-rhamnoside showed the highest binding affinity (-9,7 kcal/mol). Docking studies showed that glycosylated flavonoids are good inhibitors for the covid-19 protease and could be further investigated by in vitro and in vivo experiments for further validation.

scholarly journals Hypoglycemic Efficacy of Docking Selected Natural Compounds against α-Glucosidase and α-Amylase

Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2260 ◽  
Author(s):  
Jirawat Riyaphan ◽  
Chien-Hung Jhong ◽  
Shian-Ren Lin ◽  
Chia-Hsiang Chang ◽  
May-Jwan Tsai ◽  
...  
Keyword(s):  
Molecular Docking ◽  
Herbal Medicines ◽  
Natural Compounds ◽  
Cell System ◽  
Oral Glucose ◽  
Glucose Levels ◽  
In Vivo Experiments ◽  
Sugar Levels

The inhibition of α-glucosidase and α-amylase is a clinical strategy for the treatment of type II diabetes, and herbal medicines have been reported to credibly alleviate hyperglycemia. Our previous study has reported some constituents from plant or herbal sources targeted to α-glucosidase and α-amylase via molecular docking and enzymatic measurement, but the hypoglycemic potencies in cell system and mice have not been validated yet. This study was aimed to elucidate the hypoglycemic efficacy of docking selected compounds in cell assay and oral glucose and starch tolerance tests of mice. All test compounds showed the inhibition of α-glucosidase activity in Caco-2 cells. The decrease of blood sugar levels of test compounds in 30 min and 60 min of mice after OGTT and OSTT, respectively and the decreased glucose levels of test compounds were significantly varied in acarbose. Taken altogether, in vitro and in vivo experiments suggest that selected natural compounds (curcumin, antroquinonol, HCD, docosanol, tetracosanol, rutin, and actinodaphnine) via molecular docking were confirmed as potential candidates of α-glucosidase and α-amylase inhibitors for treating diabetes.

scholarly journals Systematic elucidation of the molecular mechanism of scutellarin against osteoarthritis based on network pharmacology

2020 ◽  
Author(s):  
Shijia Guo ◽  
Xinan Zhang ◽  
mingli Sun
Keyword(s):  
Molecular Docking ◽  
Signaling Pathways ◽  
Signaling Pathway ◽  
Network Pharmacology ◽  
Signaling Proteins ◽  
Receptor Signaling ◽  
In Vivo Experiments ◽  
Receptor Signaling Pathway

Abstract Background Scutellarin was reported to exerted inhibitive effects on osteoarthritis, However, the detailed mechanisms remain unclear. In this study, we investigated underlying multi-target mechanisms of scutellarin against osteoarthritis by using network pharmacology analysis and molecular docking. Results Scutellarin exerted inhibitive effects on osteoarthritis by regulating the function of several new signaling pathways, such as TNF signaling pathway, NOD-like receptor signaling pathway and HIF-1 signaling pathway. Molecular docking analysis showed there was better interaction between scutellarin and several NF-kB signaling proteins, including NFKBIA, RELA and NFKB1. In addition, the results showed Pi-cation, Pi-donor-hydrogen and Pi-alkyl were the main forms of interaction between scutellarin and NFKB1 and NFKBIA, Pi-Pi T-shaped, Pi-alkyl and hydrogen bonding were the main forms of interaction between scutellarin and RELA. Conclusion Taken together, TNF signaling pathway, NOD-like receptor signaling pathway and HIF-1 signaling pathway were possible signaling pathways, NFKBIA, RELA and NFKB1were possible targets associated with the activities of scutellarin against osteoarthritis. However, it is imperative that these targets should be thoroughly verified by in vitro and in vivo experiments.

scholarly journals qNMR quantification and in silico analysis of isobrucein B and neosergeolide from Picrolemma sprucei as potential inhibitors of SARS-CoV-2 protease (3CLpro) and RNA-dependent RNA polymerase (RdRp) and pharmacokinetic and toxicological properties

2021 ◽  
Vol 10 (16) ◽  
pp. e69101623220
Author(s):  
Marcos Túlio da Silva ◽  
Matheus Gabriel de Oliveira ◽  
José Realino de Paula ◽  
Vinicius Barreto da Silva ◽  
Kidney de Oliveira Gomes Neves ◽  
...  
Keyword(s):  
Molecular Docking ◽  
Medicinal Plant ◽  
In Silico ◽  
Active Sites ◽  
In Silico Analysis ◽  
In Vivo Experiments ◽  
Inhibitory Potential ◽  
Potential Inhibitors

Objective: To quantify the quassinoids of P. sprucei, a medicinal plant that is native to the Amazon region, using qNMR and investigate the inhibitory potential of isobrucein B and neosergeolide on the 3CLpro and RdRp targets of SARS-CoV-2 through in silico approaches. Methods: the quantification was performed in a fraction (F2-F3) enriched with the quassinoids isobrucein B and neosergeolide using the PULCON method. In silico assays were performed using molecular docking to assess interactions and binding affinity between neosergeolide and isobrucein B ligands with SARS-CoV-2 3CLpro and RdRp targets, and online servers were used to estimate pharmacokinetic and toxicity. Results: It was possible to determine the quantity of the two quassinoids isobrucein B and neosergeolide in the F2-F3 fraction (769.6 mg), which were present in significant amounts in the PsMeOH extract (5.46%). The results of the docking analysis, based on the crystallized structures of RdRp and 3CLpro, indicated that isobrucein B and neosergeolide are potential inhibitors of the two proteins evaluated, as well as showing the importance of hydrogen bonding and pi (π) interactions for the active sites foreseen for each target. Conclusion: The results suggest that P. sprucei quassinoids may interact with 3CLpro and RdRp targets. In vitro and in vivo experiments are needed to confirm the results of molecular docking and investigate the risks of using P. sprucei as a medicinal plant against COVID-19.

Stem Cell Cure for Kidney Injury: Therapy to Solve Most Complex Issues in Renal System

2020 ◽  
Author(s):  
Prithiv K R Kumar
Keyword(s):  
Stem Cells ◽  
Stem Cell ◽  
Kidney Injury ◽  
Cell Types ◽  
Tissue Remodelling ◽  
Major Health Problem ◽  
In Vivo Experiments ◽  
Renal Regeneration ◽  
Induced Pluripotent

Renal failure is a major health problem. The mortality rate remain high despite of several therapies. The most complex of the renal issues are solved through stem cells. In this review, different mechanism for cure of chronic kidney injury along with cell engraftment incorporated into renal structures will be analysed. Paracrine activities of embryonic or induced Pluripotent stem cells are explored on the basis of stem cell-induced kidney regeneration. Several experiments have been conducted to advance stem cells to ensure the restoration of renal functions. More vigour and organised protocols for delivering stem cells is a possibility for advancement in treatment of renal disease. Also there is a need for pressing therapies to replicate the tissue remodelling and cellular repair processes suitable for renal organs. Stem cells are the undifferentiated cells that have the ability to multiply into several cell types. In vivo experiments on animal’s stem cells have shown significant improvements in the renal regeneration and functions of organs. Nevertheless more studies show several improvements in the kidney repair due to stem cell regeneration.

In vivo Experiments of Natural Products Protection of Antagonistic Effects of Lead on Iron

2018 ◽  
Vol 68 (12) ◽  
pp. 2747-2751
Author(s):  
Marioara Nicula ◽  
Nicolae Pacala ◽  
Lavinia Stef ◽  
Ioan Pet ◽  
Dorel Dronca ◽  
...  
Keyword(s):  
Aquatic Environment ◽  
Iron Homeostasis ◽  
Iron Concentration ◽  
Antagonistic Effect ◽  
Tissue Samples ◽  
Antagonistic Effects ◽  
In Vivo Experiments ◽  
Living Organisms ◽  
Toxic Potential

Living organisms take nutrients from the environment, and together with them, substances with toxic potential � such as heavy metals. Lead is one common metal pollutant especially in aquatic environment, from where the fish can be intoxicated very easily. Bioavailability, distribution, toxic action, synergistic and antagonistic effects are characteristics which can alter the fish health. Our experimental study followed the effects of lead overload in water on iron distribution, in different tissues sample Carassius gibelio Bloch fish. We performed the experiment in four different fish groups: control C; lead � Pb (administration of lead in water 0.075mg/mL of water, as Pb(NO3)2 x � H2O); lead (the same dose) and 2% of freeze-dry garlic incorporated into fishes� food � Pb+garlic; lead (the same dose) and 2% chlorella incorporated into fishes� food � Pb+chlorella, for 21 consecutive days. The iron concentration was analysed with AAS (Atomic Absorption Spectroscopy) from gills, muscle, skin (and scales), intestine, liver, heart, brain, ovary, testicles, and kidney. The obtained data presented a significantly decrease of iron content in all tested tissue samples that demonstrated, alteration of iron homeostasis, explained by a strong antagonistic effect of lead on iron. Our experiment showed that biologic active principles from garlic and chlorella act like natural protectors, and potentiate the iron deficiency even in the case of lead overload in aquatic environment, for fish.

ANTITUMOR EFFECT OF COLLOIDAL SILVER BISILICATE IN EXPERIMENTAL IN VITRO AND IN VIVO STUDIES

2019 ◽  
Vol 65 (5) ◽  
pp. 760-765
Author(s):  
Margarita Tyndyk ◽  
Irina Popovich ◽  
A. Malek ◽  
R. Samsonov ◽  
N. Germanov ◽  
...  
Keyword(s):  
Antitumor Activity ◽  
Tumor Growth ◽  
Tumor Cells ◽  
Human Tumor ◽  
Significant Inhibition ◽  
In Vivo Studies ◽  
Ehrlich Carcinoma ◽  
In Vivo Experiments

The paper presents the results of the research on the antitumor activity of a new drug - atomic clusters of silver (ACS), the colloidal solution of nanostructured silver bisilicate Ag6Si2O7 with particles size of 1-2 nm in deionized water. In vitro studies to evaluate the effect of various ACS concentrations in human tumor cells cultures (breast cancer, colon carcinoma and prostate cancer) were conducted. The highest antitumor activity of ACS was observed in dilutions from 2.7 mg/l to 5.1 mg/l, resulting in the death of tumor cells in all studied cell cultures. In vivo experiments on transplanted Ehrlich carcinoma model in mice consuming 0.75 mg/kg ACS with drinking water revealed significant inhibition of tumor growth since the 14th day of experiment (maximally by 52% on the 28th day, p < 0.05) in comparison with control. Subcutaneous injections of 2.5 mg/kg ACS inhibited Ehrlich's tumor growth on the 7th and 10th days of the experiment (p < 0.05) as compared to control.

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