4, 5-Dihydro-1H-Pyrazol-1-YL Derivatives as MAO-A Inhibitors with Antidepressant Profile: Insilico Design and Docking

2020 ◽  
Vol 8 (1) ◽  
pp. 42-45
Author(s):  
T. Rajkumar ◽  
◽  
S.V. Suresh Kumar ◽  
N. Srinivasan ◽  
◽  
...  

Mono Amine Oxidase-A will be a key controller for typical brain activity. It is a flavoenzyme which debases amines, for example, dopamine, norepinephrine, and serotonin, by means of oxidative deamination. Main focal point of the existent research work is to design, docking and biological screening of novel Pyrazole derivatives on MAO-A as Antidepressants. In our present study we used software’s like ACD chemsketch and biological data bases like Protein Data Bank (PDB). ACD/Chem sketch (v 14.00) to draw molecules, reactions and schematic diagrams, calculate chemical properties and design professional reports and presentation. Also it can produce SMILES notations to structure. Open babel converts SMILES to PDB file for docking. Receptors like 2z5x, 2z5y, 2bxs 6fvz, 2bxr are downloaded from the Protein Data Bank (PDB). Docking studies were performed on docking Server. In order to explore their binding mode and selectivity behavior, molecular docking in the active site of MAO-A was carried out for these derivatives. Analysis of the docked poses of the compounds showed that they adopt similar conformations to the highly selective MAO-A inhibitor. The docking pose of compound with 2BXR was confirmed by molecular dynamics. By all these in silico data, it can be confirmed that all the designed compounds are having drug like nature and suitable as drug candidates and extremely promising which on further assessments may provoke medicine particles against Monoamine oxidase A. Especially, C, N can be considered as potent and can be used to treat depression and anxiety.

Epigenetics ◽  
2012 ◽  
Vol 7 (10) ◽  
pp. 1151-1160 ◽  
Author(s):  
Elena Shumay ◽  
Jean Logan ◽  
Nora D. Volkow ◽  
Joanna S. Fowler

Abstract The Research Collaboratory for Structural Bioinformatics Protein Data Bank (RSCB PDB) provides a wide range of digital data regarding biology and biomedicine. This huge internet resource involves a wide range of important biological data, obtained from experiments around the globe by different scientists. The Worldwide Protein Data Bank (wwPDB) represents a brilliant collection of 3D structure data associated with important and vital biomolecules including nucleic acids (RNAs and DNAs) and proteins. Moreover, this database accumulates knowledge regarding function and evolution of biomacromolecules which supports different disciplines such as biotechnology. 3D structure, functional characteristics and phylogenetic properties of biomacromolecules give a deep understanding of the biomolecules’ characteristics. An important advantage of the wwPDB database is the data updating time, which is done every week. This updating process helps users to have the newest data and information for their projects. The data and information in wwPDB can be a great support to have an accurate imagination and illustrations of the biomacromolecules in biotechnology. As demonstrated by the SARS-CoV-2 pandemic, rapidly reliable and accessible biological data for microbiology, immunology, vaccinology, and drug development are critical to address many healthcare-related challenges that are facing humanity. The aim of this paper is to introduce the readers to wwPDB, and to highlight the importance of this database in biotechnology, with the expectation that the number of scientists interested in the utilization of Protein Data Bank’s resources will increase substantially in the coming years.


2019 ◽  
Vol 145 (2) ◽  
pp. 287-294
Author(s):  
Rickard L. Sjöberg ◽  
◽  
Wendy Yi-Ying Wu ◽  
Anna M. Dahlin ◽  
Spiridon Tsavachidis ◽  
...  

Abstract Background The Mono-amine oxidase-A (MAO-A) enzyme is involved in the degradation and regulation of catecholamines such as serotonin, dopamine, epinephrine and nor-epinephrine. Preclinical studies suggest that this enzyme may contribute to an environment favorable for growth of malignant glioma. The MAO-A gene is located on the X-chromosome and has at least one functional genetic polymorphism. The aim of the present study was to explore possible effects of MAO-A genotype on development of glioblastoma in males. Methods Genotypes for 437 glioma cases and 876 population-based controls from the Swedish Glioma International Case–Control study (GICC) were compared. We analyzed the germline DNA using the Illumina Oncoarray. We selected seven single nucleotide polymorphisms (SNPs) located in the MAO-A gene, and imputed genotypes based on data from the 1000 genomes project. We used 1579 male glioblastoma cases and 1875 controls comprising the whole GICC cohort for subsequent validation of findings. Results The rs144551722 SNP was a significant predictor of development of glioblastoma in males (p-value = 0.0056) but not in females even after correction for multiple testing. We conducted haplotype analysis to confirm an association between MAO-A gene and risk of glioblastoma (p-value = 0.016). We found similar results in the validation sample. Conclusions These results suggest the possibility of a role for the MAO-A enzyme and the MAO-A gene in the development of glioblastoma in males.


2021 ◽  
Vol 57 (4) ◽  
pp. 166-180
Author(s):  
Maria-Minodora Marin ◽  
Madalina Georgiana Albu Kaya ◽  
George Mihail Vlasceanu ◽  
Jana Ghitman ◽  
Ionut Cristian Radu ◽  
...  

Type II collagen has been perceived as the indispensable element and plays a crucial role in cartilage tissue engineering. Thus, materials based on type II collagen have drawn farther attention in both academic and research for developing new systems for the cartilage regeneration. The disadvantage of using type II collagen as a biomaterial for tissue repairing is its reduced biomechanical properties. This can be solved by physical, enzymatic or chemical cross-linking processes, which provide biomaterials with the required mechanical properties for medical applications. To enhance type II collagen properties, crosslinked collagen scaffolds with different cross-linking agents were prepared by freeze-drying technique. The present research work studied the synthesis of type II collagen biomaterials with and without crosslinking agents. Scaffolds morphology was observed by MicroCT, showing in all cases an appropriate microstructure for biological applications, and the mechanical studies were performed using compressive tests. DSC showed an increase in denaturation temperature with an increase in cross-linking agent concentration. FTIR suggested that the secondary structure of collagen is not affected after the cross-linking; supplementary, to confirm the characteristic triple-helix conformation of collagen, the CD investigation was performed. The results showed that the physical-chemical properties of type II collagen were improved by cross-linking treatments.


Author(s):  
Priyobrata Nath ◽  
Agnish Mukherjee ◽  
Sougata Mukherjee ◽  
Sabyasachi Banerjee ◽  
Samarpita Das ◽  
...  

: Isatin is an endogenous and a significant category of fused heterocyclic component, widely been a part of several potential biologically useful synthetics. Since its discovery, tons of research work has been conducted with respect to the synthesis, chemical properties, and biological and industrial applications. It contains indole nucleus having both lactam and keto moiety which while being a part of a molecular framework exerted several biological effects, viz.; antimicrobial, antitubercular, anticonvulsant, anticancer etc. Isatin derivatives are synthetically significant substrates, which can be utilized for the synthesis of huge diversified chemical entities of which few members emerged to be a drug. The reason for this review is to provide extensive information pertaining to the chemistry and its significance in altering several pathological states of isatin and its derivatives. A Structure Activity Relationships study thus developed through a gamut of scientific information indicates the importance of mostly electron withdrawing groups, halogens, nitro, alkoxy and to a minor extent groups with positive inductive effects, such as methyl at position 1, 5, 6 and 7 of isatin in alleviating several clinical conditions. It is also observed from the survey that the presence of two oxo groups at position 2 and 3 sometimes become insignificant as fusion with a heterocycle at those position resulted in a biologically relevant compound.


2002 ◽  
Vol 58 (s1) ◽  
pp. c214-c214
Author(s):  
W. F. Bluhm ◽  
T. Battistuz ◽  
E. Clingman ◽  
N. Deshpande ◽  
W. Fleri ◽  
...  

2021 ◽  
pp. 166900
Author(s):  
Alexander Miguel Monzon ◽  
Paolo Bonato ◽  
Marco Necci ◽  
Silvio C.E. Tosatto ◽  
Damiano Piovesan
Keyword(s):  

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