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Vardhan G, Kumar V, Sahu PL, Prakash A, Prasad R, Handu S, Nath UK, Dhamija P. A Validated Chiral Chromatography Method for Enantiomeric Separation of Pomalidomide in Human Plasma. J Chromatogr Sci 2024:bmae026. [PMID: 38745428 DOI: 10.1093/chromsci/bmae026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 04/12/2024] [Indexed: 05/16/2024]
Abstract
In the present work, new chiral stationary phase high-performance liquid chromatography (CSP-HPLC) method was established and validated for the quantification of pomalidomide (PMD) enantiomers in human plasma. The chromatographic enantiomeric separation was achieved on a Daicel-CSP, Chiralpack IA 4.6 × 250 mm, 5 μm; because of its advantages of high degree of retention, high resolution capacity, better reproducibility, ability to produce lower back pressure and low degree of tailing. The mobile phase was maintained as methanol: glacial acetic acid (499.50 ml:50 μL). Ultraviolet wavelength for detection was 220 nm. PMD enantiomer-I and enantiomer-II were separated at 8.83 and 15.34 min, respectively. Limit of detection and limit of quantification for each enantiomer and the calibration curve of standard PMD was linear in range between 10-5,000 ng mL-1. The method was validated according to The International Council for Harmonisation of Technical Requirements of Pharmaceuticals for Human Use (ICH(Q2R1)) specific guidelines. We found no interference peak with PMD chromatogram obtained. This is a simple, reliable and specific method for detection and quantification of enantiomer of PMD in human plasma sample.
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Affiliation(s)
- Gyan Vardhan
- Department of Pharmacology, All India Institute of Medical Sciences, Rishikesh, Dehradun-249203, Uttarakhand, India
| | - Vikas Kumar
- Department of Pharmacology, All India Institute of Medical Sciences, Bathinda-151001, Punjab, India
| | - Puran Lal Sahu
- National Dope Testing Laboratory, JLN Stadium-G.10, New Delhi, 110003, India
| | - Anuj Prakash
- Analytical Division, Indian Pharmacopeia Commission, Ghaziabad 201002, UP, India
| | - Ramasare Prasad
- Department of Biotechnology, Indian Institute of Technology, Roorkee-247667, Uttarakhand India
| | - Shailendra Handu
- Department of Pharmacology, All India Institute of Medical Sciences, Rishikesh, Dehradun-249203, Uttarakhand, India
| | - Uttam Kumar Nath
- Department of Medical Oncology and Hematology, All India Institute of Medical Sciences, Rishikesh-249203, Dehradun, Uttarakhand, India
| | - Puneet Dhamija
- Department of Pharmacology, All India Institute of Medical Sciences, Rishikesh, Dehradun-249203, Uttarakhand, India
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Srivastava AK, Srivastava S, Kumar V, Ghosh S, Yadav S, Malik R, Roy P, Prasad R. Identification and mechanistic exploration of structural and conformational dynamics of NF-kB inhibitors: rationale insights from in silico and in vitro studies. J Biomol Struct Dyn 2024; 42:1485-1505. [PMID: 37054525 DOI: 10.1080/07391102.2023.2200490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 04/02/2023] [Indexed: 04/15/2023]
Abstract
Increased expression of target genes that code for proinflammatory chemical mediators results from a series of intracellular cascades triggered by activation of dysregulated NF-κB signaling pathway. Dysfunctional NF-kB signaling amplifies and perpetuates autoimmune responses in inflammatory diseases, including psoriasis. This study aimed to identify therapeutically relevant NF-kB inhibitors and elucidate the mechanistic aspects behind NF-kB inhibition. After virtual screening and molecular docking, five hit NF-kB inhibitors opted, and their therapeutic efficacy was examined using cell-based assays in TNF-α stimulated human keratinocyte cells. To investigate the conformational changes of target protein and inhibitor-protein interaction mechanisms, molecular dynamics (MD) simulations, binding free energy calculations together with principal component (PC) analysis, dynamics cross-correlation matrix analysis (DCCM), free energy landscape (FEL) analysis and quantum mechanical calculations were carried out. Among identified NF-kB inhibitors, myricetin and hesperidin significantly scavenged intracellular ROS and inhibited NF-kB activation. Analysis of the MD simulation trajectories of ligand-protein complexes revealed that myricetin and hesperidin formed energetically stabilized complexes with the target protein and were able to lock NF-kB in a closed conformation. Myricetin and hesperidin binding to the target protein significantly impacted conformational changes and internal dynamics of amino acid residues in protein domains. Tyr57, Glu60, Lys144 and Asp239 residues majorly contributed to locking the NF-kB in a closed conformation. The combinatorial approach employing in silico tools integrated with cell-based approaches substantiated the binding mechanism and NF-kB active site inhibition by the lead molecule myricetin, which can be explored as a viable antipsoriatic drug candidate associated with dysregulated NF-kB.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Amit Kumar Srivastava
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Shubham Srivastava
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan, India
| | - Viney Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Souvik Ghosh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Siddharth Yadav
- Department of Computer Science and Engineering, Thapar Institute of Engineering and Technology, Patiala, Punjab, India
| | - Ruchi Malik
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan, India
| | - Partha Roy
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Ramasare Prasad
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
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Maurya MR, Nandi M, Chaudhary PK, Singh S, Avecilla F, Prasad R, Ghosh K. Catalytic, Antifungal, and Antiproliferative Activity Studies of a New Family of Mononuclear [V IVO]/[V VO 2] Complexes. Inorg Chem 2024; 63:714-729. [PMID: 38150362 DOI: 10.1021/acs.inorgchem.3c03665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Ligands derived from 2-(1-phenylhydrazinyl)pyridine and salicylaldehyde (HL1), 3-methoxysalicylaldehyde (HL2), 5-bromosalicylaldehyde (HL3), and 3,5-di-tert-butylsalicylaldehyde (HL4) react with [VIVO(acac)2] in MeOH followed by aerial oxidation to give [VVO2(L1)] (1), [VVO2(L2)] (2), [VVO2(L3)] (3), and [VVO2(L4)] (4). Complex [VIVO(acac)(L1)] (5) is also isolable from [VIVO(acac)2] and HL1 in dry MeOH. Structures of all complexes were confirmed by single-crystal X-ray and spectroscopic studies. They efficiently catalyze benzyl alcohol and its derivatives' oxidation in the presence of H2O2 to their corresponding aldehydes. Under optimized reaction conditions using 1 as a catalyst precursor, conversion of benzyl alcohol follows the order: 4 (93%) > 2 (90%) > 1 (86%) > 3 (84%) ≈ 5 (84%). These complexes were also evaluated for antifungal and antiproliferative activities. Complex 3 with MIC50 = 16 μg/mL, 4 with MIC50 = 12 μg/mL, and 5 with MIC50 = 16 μg/mL are efficient toward planktonic cells of Candida albicans and Candida tropicalis. On Michigan cancer foundation-7 (MCF-7) cells, they show comparable cytotoxic effects and exhibit IC50 in the 27.3-33.5 μg/mL range, and among these, 4 exhibits the highest cytotoxicity. A similar study on human embryonic kidney cells (HEK293) confirms their less toxicity at lower concentrations (4 to 16 μg/mL) compared to MCF-7.
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Affiliation(s)
- Mannar R Maurya
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Monojit Nandi
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Pankaj Kumar Chaudhary
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Sain Singh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Fernando Avecilla
- Grupo NanoToxGen, Centro Interdisciplinar de Química y Biología (CICA), Departamento de Química, Facultade de Ciencias, Universidade da Coruña, Campus de A Coruña, 15071 A Coruña, Spain
| | - Ramasare Prasad
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Kaushik Ghosh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
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Sharma S, Gupta DN, Kushwah AS, Sharma AK, Prasad R. Identification and characterization of the Cyamopsis tetragonoloba transcription factor MYC (CtMYC) under drought stress. Gene 2023; 882:147654. [PMID: 37479095 DOI: 10.1016/j.gene.2023.147654] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/08/2023] [Accepted: 07/18/2023] [Indexed: 07/23/2023]
Abstract
The MYC transcription factor (TF) has a variety of roles in abiotic stress responses of plants. In the present work, MYC TF named CtMYC (Cymopsis tetragonoloba) from guar plant, which is induced by drought stress, was identified. The mature leaves of guar were employed to detect the full-length CtMYC TF on the 8th day of drought stress. The CtMYC gene showed tissue-specific expression and up regulated under drought stress conditions as compared to the control and maximum expression was observed in mature leaves. Additionally, CtMYC TF was cloned and expressed in E. coli Rosetta cells and CtMYC protein was purified. The circular dichroism (CD) analysis revealed the presence of helical content and beta sheets and in the presence of genomic DNA the conformational changes were observed in secondary structure, which showed DNA binding potential of CtMYC. These results were analyzed by CD and fluorescence studies. In silico studies reveal the presence of conserved bHLH domain and DNA-binding amino acid residues His, Glu and Arg in CtMYC. This is first report on CtMYC TF with DNA binding potential that is responsive to drought. This study provides the structure and characterization of CtMYC TF and DNA binding ability in drought tolerance mechanism in guar.
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Affiliation(s)
- Shipra Sharma
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Deena Nath Gupta
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Ankita Singh Kushwah
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Ashwani Kumar Sharma
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Ramasare Prasad
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, India.
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Kushwah AS, Dixit H, Upadhyay V, Yadav S, Verma SK, Prasad R. Elucidating the zinc-binding proteome of Fusarium oxysporum f. sp. lycopersici with particular emphasis on zinc-binding effector proteins. Arch Microbiol 2023; 205:298. [PMID: 37516670 DOI: 10.1007/s00203-023-03638-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 06/29/2023] [Accepted: 07/14/2023] [Indexed: 07/31/2023]
Abstract
Fusarium oxysporum f. sp. lycopersici is a soil-borne phytopathogenic species which causes vascular wilt disease in the Solanum lycopersicum (tomato). Due to the continuous competition for zinc usage by Fusarium and its host during infection makes zinc-binding proteins a hotspot for focused investigation. Zinc-binding effector proteins are pivotal during the infection process, working in conjunction with other essential proteins crucial for its biological activities. This work aims at identifying and analysing zinc-binding proteins and zinc-binding proteins effector candidates of Fusarium. We have identified three hundred forty-six putative zinc-binding proteins; among these proteins, we got two hundred and thirty zinc-binding proteins effector candidates. The functional annotation, subcellular localization, and Gene Ontology analysis of these putative zinc-binding proteins revealed their probable role in wide range of cellular and biological processes such as metabolism, gene expression, gene expression regulation, protein biosynthesis, protein folding, cell signalling, DNA repair, and RNA processing. Sixteen proteins were found to be putatively secretory in nature. Eleven of these were putative zinc-binding protein effector candidates may be involved in pathogen-host interaction during infection. The information obtained here may enhance our understanding to design, screen, and apply the zinc-metal ion-based antifungal agents to protect the S. lycopersicum and control the vascular wilt caused by F. oxysporum.
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Affiliation(s)
- Ankita Singh Kushwah
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
| | - Himisha Dixit
- Centre for Computational Biology & Bioinformatics, Central University of Himachal Pradesh, Kangra, Himachal Pradesh, 176206, India
| | - Vipin Upadhyay
- Centre for Computational Biology & Bioinformatics, Central University of Himachal Pradesh, Kangra, Himachal Pradesh, 176206, India
| | - Siddharth Yadav
- Department of Computer Science and Engineering, Thapar Institute of Engineering & Technology, Patiala, Punjab, 147004, India
| | - Shailender Kumar Verma
- Centre for Computational Biology & Bioinformatics, Central University of Himachal Pradesh, Kangra, Himachal Pradesh, 176206, India
- Department of Environmental Studies, University of Delhi, New Delhi, Delhi, 110007, India
| | - Ramasare Prasad
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India.
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Dey A, Anand K, Singh A, Prasad R, Barthwal R. MOSR and NDHA Genes Comprising G-Quadruplex as Promising Therapeutic Targets against Mycobacterium tuberculosis: Molecular Recognition by Mitoxantrone Suppresses Replication and Gene Regulation. Genes (Basel) 2023; 14:genes14050978. [PMID: 37239338 DOI: 10.3390/genes14050978] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/19/2022] [Accepted: 04/18/2023] [Indexed: 05/28/2023] Open
Abstract
Occurrence of non-canonical G-quadruplex (G4) DNA structures in the genome have been recognized as key factors in gene regulation and several other cellular processes. The mosR and ndhA genes involved in pathways of oxidation sensing regulation and ATP generation, respectively, make Mycobacterium tuberculosis (Mtb) bacteria responsible for oxidative stress inside host macrophage cells. Circular Dichroism spectra demonstrate stable hybrid G4 DNA conformations of mosR/ndhA DNA sequences. Real-time binding of mitoxantrone to G4 DNA with an affinity constant ~105-107 M-1, leads to hypochromism with a red shift of ~18 nm, followed by hyperchromism in the absorption spectra. The corresponding fluorescence is quenched with a red shift ~15 nm followed by an increase in intensity. A change in conformation of the G4 DNA accompanies the formation of multiple stoichiometric complexes with a dual binding mode. The external binding of mitoxantrone with a partial stacking with G-quartets and/or groove binding induces significant thermal stabilization, ~20-29 °C in ndhA/mosR G4 DNA. The interaction leads to a two/four-fold downregulation of transcriptomes of mosR/ndhA genes apart from the suppression of DNA replication by Taq polymerase enzyme, establishing the role of mitoxantrone in targeting G4 DNA, as an alternate strategy for effective anti-tuberculosis action in view of deadly multi-drug resistant tuberculosis disease causing bacterial strains t that arise from existing therapeutic treatments.
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Affiliation(s)
- Arpita Dey
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Kushi Anand
- Centre for Infectious Disease Research, Indian Institute of Science, Bengaluru 560012, Karnataka, India
| | - Amit Singh
- Centre for Infectious Disease Research, Indian Institute of Science, Bengaluru 560012, Karnataka, India
| | - Ramasare Prasad
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Ritu Barthwal
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
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Mishra P, Gupta P, Srivastava R, Srivastava AK, Poluri KM, Prasad R. Exploration of Antibiofilm and In Vivo Wound Healing Activity of p-Cymene-Loaded Gellan/PVA Nanofibers. ACS Appl Bio Mater 2023; 6:1816-1831. [PMID: 37075306 DOI: 10.1021/acsabm.3c00047] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2023]
Abstract
Wound dressings with outstanding biocompatibility, antimicrobial, and tissue regeneration activities are essential to manage emerging recalcitrant antifungal infections to speed up healing. In this study, we have engineered p-cymene-loaded gellan/PVA nanofibers using electrospinning. Morphological and physicochemical properties of the nanofibers were characterized using a multitude of techniques to validate the successful integration of p-cymene (p-cym). The fabricated nanomaterials exhibited strong antibiofilm activity against Candida albicans and Candida glabrata compared to pure p-cymene. In vitro biocompatibility assay demonstrated that nanofibers did not possess any cytotoxicity to the NIH3T3 cell lines. In vivo, full-thickness excision wound healing study showed that the nanofibers were able to heal skin lesions faster than the conventional clotrimazole gel in 24 days without forming any scar. These findings unraveled p-cymene-loaded gellan gum (GA)/poly(vinyl alcohol) (PVA) nanofibers as an effective biomaterial for cutaneous tissue regeneration.
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Affiliation(s)
- Purusottam Mishra
- Department of Bioscience and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Payal Gupta
- Department of Bioscience and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
- Department of Biotechnology, Graphic Era University, Clement Town, Dehradun 248002, Uttarakhand, India
| | - Rajnish Srivastava
- Moradabad Educational Trust Group of Institutions, Faculty of Pharmacy, Moradabad 244001, Uttar Pradesh, India
| | - Amit Kumar Srivastava
- Department of Bioscience and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Krishna Mohan Poluri
- Department of Bioscience and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
- Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Ramasare Prasad
- Department of Bioscience and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
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Alam MS, Sharma M, Kumar R, Das J, Rode S, Kumar P, Prasad R, Sharma AK. In silico identification of potential phytochemical inhibitors targeting farnesyl diphosphate synthase of cotton bollworm ( Helicoverpa armigera). J Biomol Struct Dyn 2023; 41:1978-1987. [PMID: 35037838 DOI: 10.1080/07391102.2022.2025904] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Helicoverpa armigera (Ha), a polyphagous pest, causes significant damage to several crop plants, including cotton. The control of this cosmopolitan pest is largely challenging due to the development of resistance to existing management practices. The Juvenile Hormone (JH) plays a pivotal role in the life cycle of insects by regulating their morphogenetic and gonadotropic development. Hence, enzymes involved in JH biosynthesis are an attractive target for the development of selective insecticides. Farnesyl diphosphate synthase (FPPS), a member protein of (E)-prenyl-transferases, is one of the most crucial enzymes in the biosynthetic pathway of JHs. It catalyzes the condensation of isopentenyl diphosphate (IPP) with dimethylallyl diphosphate (DMAPP), forming farnesyl diphosphate (FPP), a precursor of JH. The study was designed to identify an effective small inhibitory molecule that could inhibit the activity of Helicoverpa armigera - FPPS (HaFPPS) for an effective pest control intervention. Therefore, a 3D model of FPPS protein was generated using homology modeling. The FooDB database library of small molecules was selected for virtual screening, following which binding affinities were evaluated using docking studies. Three top-scored molecules were analyzed for various pharmacophore properties. Further, molecular dynamics (MD) simulation analysis showed that the identified molecules (mitraphylline-ZINC1607834, chlorogenic acid-ZINC2138728 and llagate-ZINC3872446) had a reasonably acceptable binding affinity for HaFPPS and resulted in the formation of a stable HaFPPS-inhibitor(s) complex. The identified phytochemical molecules may be used as potent inhibitors of HaFPPS thus, paving the way for further developing environment-friendly insect growth regulator(s). Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Md Shahid Alam
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Monica Sharma
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Rakesh Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Joy Das
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Surabhi Rode
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Pravindra Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Ramasare Prasad
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Ashwani Kumar Sharma
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, India
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Bagchi SK, Patnaik R, Sharma N, Prasad R. Extremophilic Microalgae. Extremophiles 2023. [DOI: 10.1201/9781003335221-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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10
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Dey A, Pandav K, Nath M, Barthwal R, Prasad R. Erratum: Binding characterization of anthraquinone derivatives by stabilizing G-quadruplex DNA leads to an anticancerous activity. Mol Ther Nucleic Acids 2023; 31:256. [PMID: 36700048 PMCID: PMC9843247 DOI: 10.1016/j.omtn.2022.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
[This corrects the article DOI: 10.1016/j.omtn.2022.11.008.].
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Smith C, Williams J, Hall C, Caley M, O’Toole E, Prasad R, Metherell L. 181 Sphingosine 1-phosphate lyase insufficiency induced ichthyosis is due to sphingolipid imbalance, increased differentiation, and aberrant intercellular junctions. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Sartaj K, Patel A, Matsakas L, Prasad R. Unravelling Metagenomics Approach for Microbial Biofuel Production. Genes (Basel) 2022; 13:1942. [PMID: 36360179 PMCID: PMC9689425 DOI: 10.3390/genes13111942] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 10/18/2022] [Accepted: 10/21/2022] [Indexed: 09/29/2023] Open
Abstract
Renewable biofuels, such as biodiesel, bioethanol, and biobutanol, serve as long-term solutions to fossil fuel depletion. A sustainable approach feedstock for their production is plant biomass, which is degraded to sugars with the aid of microbes-derived enzymes, followed by microbial conversion of those sugars to biofuels. Considering their global demand, additional efforts have been made for their large-scale production, which is ultimately leading breakthrough research in biomass energy. Metagenomics is a powerful tool allowing for functional gene analysis and new enzyme discovery. Thus, the present article summarizes the revolutionary advances of metagenomics in the biofuel industry and enlightens the importance of unexplored habitats for novel gene or enzyme mining. Moreover, it also accentuates metagenomics potentials to explore uncultivable microbiomes as well as enzymes associated with them.
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Affiliation(s)
- Km Sartaj
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Alok Patel
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental, and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden
| | - Leonidas Matsakas
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental, and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden
| | - Ramasare Prasad
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
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Dey A, Pandav K, Nath M, Barthwal R, Prasad R. Molecular rec§ognition of telomere DNA sequence by 2, 6 anthraquinone derivatives leads to thermal stabilization and induces apoptosis in cancer cells. Int J Biol Macromol 2022; 221:355-370. [PMID: 36041576 DOI: 10.1016/j.ijbiomac.2022.08.156] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/21/2022] [Accepted: 08/22/2022] [Indexed: 11/25/2022]
Abstract
According to current research, anti-cancer anthraquinones impact telomere disruption and may interact with G-quadruplex DNA that triggers signaling to apoptosis. The present study represents the biophysical investigation of oxidative stress, late apoptosis, and induced senescence among cancer cells after binding laboratory synthesized piperidine-based anthraquinone derivatives, 2, 6- Bis [(3-piperidino)acetamido)]anthracene-9,10-dione (N1P) and 2, 6-Bis [piperidino)propionamido]anthracene-9,10-dione (N2P), with G-quadruplex DNA. We employed biophysical approaches to explore the interaction of synthetic anthraquinone derivatives with quadruplex DNA sequences to influence biological activities in the presence of K+ and Na+ cations. The binding affinity for N2P and N1P are Kb = 5.8 × 106 M-1 and Kb = 1.0 × 106 M-1, respectively, leading to hypo-/hyper-chromism with 5-7 nm red shift and significant fluorescence quenching and changes in ellipticity resulting in external binding of both the ligands to G-quadruplex DNA. Ligand binding induced enhancement of thermostability of G4 DNA is greater in Na+ environment (ΔTm = 34 °C) as compared to that in K+ environment (ΔTm = 21 °C), thereby restricting telomerase binding access to telomeres. Microscopic images of treated cells indicated cellular shape, nuclear condensation, and fragmentation alterations. The findings pave the path for therapeutic research, given the great potential of modifying anthraquinone substituent groups towards improved efficacy, ROS generation, and G-quadruplex DNA selectivity.
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Affiliation(s)
- Arpita Dey
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - Kumud Pandav
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - Mala Nath
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - Ritu Barthwal
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India.
| | - Ramasare Prasad
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India.
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14
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Gulizia J, Rueda M, Ovi F, Bonilla S, Prasad R, Jackson M, Gutierrez O, Pacheco W. Evaluate the effect of a commercial heat stable phytase on broiler performance, tibia ash, and mineral excretion from 1 to 49 days of age assessed using nutrient reduced diets. J APPL POULTRY RES 2022. [DOI: 10.1016/j.japr.2022.100276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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15
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Yadav TC, Gupta P, Saini S, Mohiyuddin S, Pruthi V, Prasad R. Plausible Mechanistic Insights in Biofilm Eradication Potential against Candida spp. Using In Situ-Synthesized Tyrosol-Functionalized Chitosan Gold Nanoparticles as a Versatile Antifouling Coating on Implant Surfaces. ACS Omega 2022; 7:8350-8363. [PMID: 35309435 PMCID: PMC8928565 DOI: 10.1021/acsomega.1c05822] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 02/21/2022] [Indexed: 05/13/2023]
Abstract
In the present study, tyrosol-functionalized chitosan gold nanoparticles (Chi-TY-AuNPs) were prepared as an alternative treatment strategy to combat fungal infections. Various biophysical techniques were used to characterize the synthesized Chi-TY-AuNPs. The antifungal and antibiofilm activities of Chi-TY-AuNPs were evaluated against Candida albicans and C. glabrata, and efforts have been made to elucidate the possible mechanism of action. Chi-TY-AuNPs showed a high fungicidal effect against both sessile and planktonic cells of Candida spp. Additionally, Chi-TY-AuNPs completely eradicated (100%) the mature biofilms of both the Candida spp. FESEM analysis highlighted the morphological alterations in Chi-TY-AuNP-treated Candida biofilm cells. The effect of Chi-TY-AuNPs on the ECM components showed significant reduction in protein content in the C. glabrata biofilm and substantial decrease in extracellular DNA content of both the Candida spp. ROS generation analysis using DCFDA-PI staining showed high ROS levels in both the Candida spp., whereas pronounced ROS production was observed in the Chi-TY-AuNP-treated C. glabrata biofilm. Biochemical analysis revealed decreased ergosterol content in Chi-TY-AuNP-treated C. glabrata cells, while inconsequential changes were observed in C. albican s. Furthermore, the transcriptional expression of selected genes (ergosterol biosynthesis, efflux, sterol importer, and glucan biogenesis) was reduced in C. glabrata in response to Chi-TY-AuNPs except ERG11 and CDR1. Conclusively, the result showed the biofilm inhibition and biofilm eradication efficacy of Chi-TY-AuNPs in both the Candida spp. Findings of the present study manifest Chi-TY-AuNPs as a potential therapeutic solution to Candida biofilm-related chronic infections and overcome biofilm antifungal resistance.
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Affiliation(s)
- Tara Chand Yadav
- Department
of Biosciences and Bioengineering, Indian
Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
- Department
of Biotechnology, School of Sciences, P
P Savani University, Surat 394125, Gujarat, India
- . Phone no.: +91-8076260165
| | - Payal Gupta
- Department
of Biosciences and Bioengineering, Indian
Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Saakshi Saini
- Department
of Biosciences and Bioengineering, Indian
Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Shanid Mohiyuddin
- Department
of Biosciences and Bioengineering, Indian
Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Vikas Pruthi
- Department
of Biosciences and Bioengineering, Indian
Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Ramasare Prasad
- Department
of Biosciences and Bioengineering, Indian
Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
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16
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Shail M, Prasad R. Identification and molecular analysis of the annexin genes in Cyamopsis tetragonoloba L. Gene Reports 2022. [DOI: 10.1016/j.genrep.2022.101540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Chatrath A, Kumar M, Prasad R. Comparative proteomics and variations in extracellular matrix of Candida tropicalis biofilm in response to citral. Protoplasma 2022; 259:263-275. [PMID: 33959808 DOI: 10.1007/s00709-021-01658-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 04/23/2021] [Indexed: 06/12/2023]
Abstract
Candida tropicalis is an opportunistic human pathogen with an ability to cause superficial as well as systemic infections in immunocompromised patients. The formation of biofilm by C. tropicalis can cause dreadful and persistent infections which are difficult to treat due to acquired resistance. Presently, available anti-Candida drugs exhibit a high frequency of resistance, low specificity and toxicity at a higher dosage. In addition, the discovery of natural or synthetic anti-Candida drugs is slow paced and often does not pass clinical trials. Citral, a monoterpene aldehyde, has shown effective antimicrobial activities against various microorganisms. However, only few studies have elaborated the action of citral against the biofilm of C. tropicalis. In the present work, the aim was to study the fungicidal effect, differential expression of proteome and changes in extracellular matrix in response to the sub-lethal concentration (16 µg/mL) of citral. The administration of citral on C. tropicalis biofilm leads to a fungicidal effect. Furthermore, the differential expression of proteome has revealed twenty-five proteins in C. tropicalis biofilm, which were differentially expressed in the presence of citral. Among these, amino acid biosynthesis (Met6p, Gln1p, Pha2p); nucleotide biosynthesis (Xpt1p); carbohydrate metabolism (Eno1p, Fba1p, Gpm1p); sterol biosynthesis (Mvd1p/Erg19p, Hem13p); energy metabolism (Dnm1p, Coa1p, Ndk1p, Atp2p, Atp4p, Hts1p); oxidative stress (Hda2p, Gre22p, Tsa1p, Pst2p, Sod2p) and biofilm-specific (Adh1p, Ape1p, Gsp1p) proteins were identified. The overexpression of oxidative stress-related proteins indicates the response of biofilm cell to combating oxidative stress during citral treatment. Moreover, the upregulation of Adh1p is of particular interest because it subsidizes the biofilm inhibition through ethanol production as a cellular response. The augmented expression of Mvd1p/Erg19p signifies the effect of citral on ergosterol biosynthesis. The presence of citral has also shown an increment in hexosamine and ergosterol component in extracellular matrix of C. tropicalis biofilm. Hence, it is indicated that the cellular response towards citral acts through multifactorial processes. This study will further help in the interpretation of the effect of citral on C. tropicalis biofilm and development of novel antifungal agents against these potential protein targets.
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Affiliation(s)
- Apurva Chatrath
- Molecular Biology & Proteomics Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, 247667, Uttarakhand, India
| | - Manish Kumar
- Protein Structural & Molecular Dynamics Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, 247667, Uttarakhand, India
| | - Ramasare Prasad
- Molecular Biology & Proteomics Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, 247667, Uttarakhand, India.
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18
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Bagchi SK, Patnaik R, Prasad R. Feasibility of Utilizing Wastewaters for Large-Scale Microalgal Cultivation and Biofuel Productions Using Hydrothermal Liquefaction Technique: A Comprehensive Review. Front Bioeng Biotechnol 2021; 9:651138. [PMID: 34869245 PMCID: PMC8640140 DOI: 10.3389/fbioe.2021.651138] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 09/27/2021] [Indexed: 11/21/2022] Open
Abstract
The two major bottlenecks faced during microalgal biofuel production are, (a) higher medium cost for algal cultivation, and (b) cost-intensive and time consuming oil extraction techniques. In an effort to address these issues in the large scale set-ups, this comprehensive review article has been systematically designed and drafted to critically analyze the recent scientific reports that demonstrate the feasibility of microalgae cultivation using wastewaters in outdoor raceway ponds in the first part of the manuscript. The second part describes the possibility of bio-crude oil production directly from wet algal biomass, bypassing the energy intensive and time consuming processes like dewatering, drying and solvents utilization for biodiesel production. It is already known that microalgal drying can alone account for ∼30% of the total production costs of algal biomass to biodiesel. Therefore, this article focuses on bio-crude oil production using the hydrothermal liquefaction (HTL) process that converts the wet microalgal biomass directly to bio-crude in a rapid time period. The main product of the process, i.e., bio-crude oil comprises of C16-C20 hydrocarbons with a reported yield of 50–65 (wt%). Besides elucidating the unique advantages of the HTL technique for the large scale biomass processing, this review article also highlights the major challenges of HTL process such as update, and purification of HTL derived bio-crude oil with special emphasis on deoxygenation, and denitrogenation problems. This state of art review article is a pragmatic analysis of several published reports related to algal crude-oil production using HTL technique and a guide towards a new approach through collaboration of industrial wastewater bioremediation with rapid one-step bio-crude oil production from chlorophycean microalgae.
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Affiliation(s)
- Sourav Kumar Bagchi
- Department of Bioscience and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Reeza Patnaik
- DBT-IOC Centre for Advanced Bioenergy Research, Research and Development Centre, Indian Oil Corporation Limited (IOCL), Faridabad, India
| | - Ramasare Prasad
- Department of Bioscience and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, India
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Mishra P, Gupta P, Srivastava AK, Poluri KM, Prasad R. Eucalyptol/ β-cyclodextrin inclusion complex loaded gellan/PVA nanofibers as antifungal drug delivery system. Int J Pharm 2021; 609:121163. [PMID: 34624448 DOI: 10.1016/j.ijpharm.2021.121163] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 10/01/2021] [Accepted: 10/02/2021] [Indexed: 12/26/2022]
Abstract
Fungal infections pose a serious threat to humankind due to the toxicity of conventional antifungal therapy and continuous emerging incidence of multidrug resistance. Essential oils fascinated researchers because of their broad antimicrobial activity and minimal cytotoxicity. However, hydrophobic, volatile and low water solubility of essential oils hinder their applications in pharmaceutical industries. Therefore, in this study we have loaded eucalyptol/ β-cyclodextrin inclusion complex to gellan/polyvinyl alcohol nanofibers (EPNF) to eradicate Candida albicans and Candida glabrata biofilms. The electrospun nanofibers characterized by various physicochemical techniques and it was observed that EPNF possess highly hydrophilic surface property that facilitate rapid drug release. EPNF inhibited approximately 70% biofilm of C. albicans and C. glabrata. Time kill results depicted that eucalyptol (EPTL) encapsulation in the nanofibers prolonged its antifungal activity than the pure EPTL. Electron microscopy studies revealed that EPNF disrupted the cell surface of Candida. Collectively the current study suggested nanofiber encapsulation enhanced antibiofilm activity of eucalyptol and these nanoscale systems can serve as an alternative therapeutic strategy to treat fungal infections. Further, the developed nanofibrous materials can be applied as cost effective coating agent for biomedical implants.
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Affiliation(s)
- Purusottam Mishra
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Payal Gupta
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Amit Kumar Srivastava
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Krishna Mohan Poluri
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India; Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Ramasare Prasad
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
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20
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Gupta P, Mishra P, Prasad R, Poluri KM. Dissecting the Therapeutic Potency of Antimicrobial Peptides Against Microbial Biofilms. Curr Protein Pept Sci 2021; 22:336-360. [PMID: 33749561 DOI: 10.2174/1389203722666210322145810] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 10/28/2020] [Accepted: 12/18/2020] [Indexed: 11/22/2022]
Abstract
Microbial resistance to conventional therapeutics has become a significant threat to human society. Biofilms serve as the major virulence factor for the microorganisms by resisting the antibiotics and host innate immune system. Antimicrobial peptides (AMPs) have emerged as a potential alternative to conventional therapeutics due to their exceptional anti-biofilm and broad-spectrum antimicrobial property. Researchers have applied bioinformatics, genetic engineering, tissue culture, and drug delivery approaches to enhance the production and therapeutic efficacy of antimicrobial peptides. This review comprehensively describes the various aspects of AMPs with particular focus on their anti-biofilm potential. Other detailed information highlighted in this review includes different classes of AMPs, their mode of action, and anti-biofilm activity both alone and in synergy with other AMPs or conventional antibiotics. Further, challenges and opportunities of AMPs based drug delivery systems such as nano-formulations, polymeric micelles, and vesicles are also summarized.
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Affiliation(s)
- Payal Gupta
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Purusottam Mishra
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Ramasare Prasad
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Krishna Mohan Poluri
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
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21
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Byrne A, Galhoum M, Prasad R. 764 Is Consent Valid in Common Orthopaedic Surgeries? Br J Surg 2021. [DOI: 10.1093/bjs/znab259.097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Aim
Consent is at the heart of the doctor-patient relationship. Valid consent should be voluntary, informed and the patient must have the capacity to make the decision. It is the doctor’s responsibility to ensure the patient can make an informed decision. The aim of this audit is to assess the validity of consent within Salford Royal Foundation Trust Orthopaedic department.
Method
We retrospectively reviewed 225 consent forms for four common orthopaedic trauma procedures: 44 wrist ORIF, 48 ankle fixation, 71 hip hemiarthroplasty and 62 fixations with DHS. BOA-endorsed OrthoConsent and SRFT-produced leaflets were utilised as a standard for reported surgical risks and complications. Collated patient consents were compared against these standards. Exclusion criteria included consent four and polytrauma patients.
Results
96 forms were excluded leaving 129 consent forms. In all four procedures, 86%-100% had documented infection, nerve injury and bleeding. Compartment syndrome was not documented for any wrist ORIF patients. CRPS was recorded in only 57% of wrist and 31% of ankle ORIF patients. Wound healing complications was documented in 17% of ankle ORIF. In 71% of DHS and 64% of hemiarthroplasty patients, risk of death was not recorded.
Conclusions
Targets for achieving satisfactory consent form documentation were not met and showed significant variation amongst clinicians. It suggests that patients are not being fully informed of benefits and risks of surgery. Recommendations include the introduction of posters and encouraging printing off patient information leaflets and improving education on valid consent for rotational doctors.
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Affiliation(s)
- A Byrne
- Salford Royal NHS Foundation Trust, Salford, United Kingdom
| | - M Galhoum
- Salford Royal NHS Foundation Trust, Salford, United Kingdom
| | - R Prasad
- Salford Royal NHS Foundation Trust, Salford, United Kingdom
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22
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Smith C, Williams J, Caley M, O’Toole E, Prasad R, Metherell L. 099 Ichthyosis associated with sphingosine 1-phosphate lyase deficiency is due to aberrant calcium and sphingolipid regulation. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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23
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Gupta P, Mishra P, Mehra L, Rastogi K, Prasad R, Mittal G, Poluri KM. Eugenol-acacia gum-based bifunctional nanofibers as a potent antifungal transdermal substitute. Nanomedicine (Lond) 2021; 16:2269-2289. [PMID: 34569268 DOI: 10.2217/nnm-2021-0274] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Aim: Fungal biofilms interfere with the wound healing processes. Henceforth, the study aims to fabricate a biomaterial-based nano-scaffold with the dual functionalities of wound healing and antibiofilm activity. Methods: Nanofibers comprising acacia gum, polyvinyl alcohol and inclusion complex of eugenol in β-cyclodextrin (EG-NF) were synthesized using electrospinning. Antibiofilm studies were performed on Candida species, and the wound-healing activity was evaluated through an in vivo excision wound rat model. Results: The EG-NF potentially eradicated the mature biofilm of Candida species and their clinical isolates. Further, EG-NF also enhanced the re-epithelization and speed of wound healing in in vivo rat experiments. Conclusion: The study established the bifunctional applications of eugenol nanofibers as a transdermal substitute with antifungal potency.
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Affiliation(s)
- Payal Gupta
- Department of Biosciences & Bioengineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Purusottam Mishra
- Department of Biosciences & Bioengineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Lalita Mehra
- Department of Combat Sciences, Institute of Nuclear Medicine & Allied Sciences, Defence Research & Development Organisation, Timarpur, 110054, Delhi, India
| | - Kartikey Rastogi
- Department of Combat Sciences, Institute of Nuclear Medicine & Allied Sciences, Defence Research & Development Organisation, Timarpur, 110054, Delhi, India
| | - Ramasare Prasad
- Department of Biosciences & Bioengineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Gaurav Mittal
- Department of Combat Sciences, Institute of Nuclear Medicine & Allied Sciences, Defence Research & Development Organisation, Timarpur, 110054, Delhi, India
| | - Krishna Mohan Poluri
- Department of Biosciences & Bioengineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India.,Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
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Chaudhary JK, Yadav R, Chaudhary PK, Maurya A, Roshan R, Azam F, Mehta J, Handu S, Prasad R, Jain N, Pandey AK, Dhamija P. Host Cell and SARS-CoV-2-Associated Molecular Structures and Factors as Potential Therapeutic Targets. Cells 2021; 10:cells10092427. [PMID: 34572076 PMCID: PMC8467010 DOI: 10.3390/cells10092427] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 08/28/2021] [Accepted: 08/31/2021] [Indexed: 02/07/2023] Open
Abstract
Coronavirus disease 19 (COVID-19) is caused by an enveloped, positive-sense, single-stranded RNA virus, referred to as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which belongs to the realm Riboviria, order Nidovirales, family Coronaviridae, genus Betacoronavirus and the species Severe acute respiratory syndrome-related coronavirus. This viral disease is characterized by a myriad of varying symptoms, such as pyrexia, cough, hemoptysis, dyspnoea, diarrhea, muscle soreness, dysosmia, lymphopenia and dysgeusia amongst others. The virus mainly infects humans, various other mammals, avian species and some other companion livestock. SARS-CoV-2 cellular entry is primarily accomplished by molecular interaction between the virus’s spike (S) protein and the host cell surface receptor, angiotensin-converting enzyme 2 (ACE2), although other host cell-associated receptors/factors, such as neuropilin 1 (NRP-1) and neuropilin 2 (NRP-2), C-type lectin receptors (CLRs), as well as proteases such as TMPRSS2 (transmembrane serine protease 2) and furin, might also play a crucial role in infection, tropism, pathogenesis and clinical outcome. Furthermore, several structural and non-structural proteins of the virus themselves are very critical in determining the clinical outcome following infection. Considering such critical role(s) of the abovementioned host cell receptors, associated proteases/factors and virus structural/non-structural proteins (NSPs), it may be quite prudent to therapeutically target them through a multipronged clinical regimen to combat the disease.
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Affiliation(s)
- Jitendra Kumar Chaudhary
- Department of Zoology, Shivaji College, University of Delhi, New Delhi 110027, India; (J.K.C.); (R.R.)
| | - Rohitash Yadav
- Department of Pharmacology, All India Institute of Medical Sciences (AIIMS), Rishikesh 249201, India;
- Correspondence: (R.Y.); (P.D.)
| | - Pankaj Kumar Chaudhary
- Molecular Biology & Proteomics Laboratory, Department of Biotechnology, Indian Institute of Technology (IIT), Roorkee 247667, India; (P.K.C.); (R.P.)
| | - Anurag Maurya
- Department of Botany, Shivaji College, University of Delhi, New Delhi 110027, India;
| | - Rakesh Roshan
- Department of Zoology, Shivaji College, University of Delhi, New Delhi 110027, India; (J.K.C.); (R.R.)
| | - Faizul Azam
- Department of Pharmaceutical Chemistry and Pharmacognosy, Unaizah College of Pharmacy, Qassim University, Unaizah 51911, Saudi Arabia;
| | - Jyoti Mehta
- Department of Physiology, Maharishi Markandeshwar Medical College and Hospital, Solan 173229, India;
| | - Shailendra Handu
- Department of Pharmacology, All India Institute of Medical Sciences (AIIMS), Rishikesh 249201, India;
| | - Ramasare Prasad
- Molecular Biology & Proteomics Laboratory, Department of Biotechnology, Indian Institute of Technology (IIT), Roorkee 247667, India; (P.K.C.); (R.P.)
| | - Neeraj Jain
- Department of Cancer Biology, CSIR-Central Drug Research Institute, Lucknow 226031, India;
| | - Avaneesh Kumar Pandey
- Department of Pharmacology, Postgraduate Institute of Medical Education and Research, Chandigarh 160012, India;
| | - Puneet Dhamija
- Department of Pharmacology, All India Institute of Medical Sciences (AIIMS), Rishikesh 249201, India;
- Correspondence: (R.Y.); (P.D.)
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25
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Knorre DA, Galkina KV, Shirokovskikh T, Banerjee A, Prasad R. Do Multiple Drug Resistance Transporters Interfere with Cell Functioning under Normal Conditions? Biochemistry (Mosc) 2021; 85:1560-1569. [PMID: 33705294 DOI: 10.1134/s0006297920120081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Eukaryotic cells rely on multiple mechanisms to protect themselves from exogenous toxic compounds. For instance, cells can limit penetration of toxic molecules through the plasma membrane or sequester them within the specialized compartments. Plasma membrane transporters with broad substrate specificity confer multiple drug resistance (MDR) to cells. These transporters efflux toxic compounds at the cost of ATP hydrolysis (ABC-transporters) or proton influx (MFS-transporters). In our review, we discuss the possible costs of having an active drug-efflux system using yeast cells as an example. The pleiotropic drug resistance (PDR) subfamily ABC-transporters are known to constitutively hydrolyze ATP even without any substrate stimulation or transport across the membrane. Besides, some MDR-transporters have flippase activity allowing transport of lipids from inner to outer lipid layer of the plasma membrane. Thus, excessive activity of MDR-transporters can adversely affect plasma membrane properties. Moreover, broad substrate specificity of ABC-transporters also suggests the possibility of unintentional efflux of some natural metabolic intermediates from the cells. Furthermore, in some microorganisms, transport of quorum-sensing factors is mediated by MDR transporters; thus, overexpression of the transporters can also disturb cell-to-cell communications. As a result, under normal conditions, cells keep MDR-transporter genes repressed and activate them only upon exposure to stresses. We speculate that exploiting limitations of the drug-efflux system is a promising strategy to counteract MDR in pathogenic fungi.
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Affiliation(s)
- D A Knorre
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia. .,Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Moscow, 119991, Russia
| | - K V Galkina
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - T Shirokovskikh
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - A Banerjee
- Amity Institute of Biotechnology and Amity Institute of Integrative Sciences and Health, Amity University Haryana, Amity Education Valley, Gurugram, 122413, India
| | - R Prasad
- Amity Institute of Biotechnology and Amity Institute of Integrative Sciences and Health, Amity University Haryana, Amity Education Valley, Gurugram, 122413, India
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Neha, Prasad R, Singh SV. Influence of calcination atmospheres on the physicochemical properties and catalytic activity of Ni
1
Co
1
O
x
catalyst for CO oxidation. ASIA-PAC J CHEM ENG 2021. [DOI: 10.1002/apj.2634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Neha
- Department of Chemical Engineering and Technology Indian Institute of Technology (BHU) Varanasi India
| | - R. Prasad
- Department of Chemical Engineering and Technology Indian Institute of Technology (BHU) Varanasi India
| | - S. V. Singh
- Department of Chemical Engineering and Technology Indian Institute of Technology (BHU) Varanasi India
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Srivastava AK, Chand Yadav T, Khera HK, Mishra P, Raghuwanshi N, Pruthi V, Prasad R. Insights into interplay of immunopathophysiological events and molecular mechanistic cascades in psoriasis and its associated comorbidities. J Autoimmun 2021; 118:102614. [PMID: 33578119 DOI: 10.1016/j.jaut.2021.102614] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 02/02/2021] [Accepted: 02/02/2021] [Indexed: 02/07/2023]
Abstract
Psoriasis is an inflammatory skin disease with complex pathogenesis and multiple etiological factors. Besides the essential role of autoreactive T cells and constellation of cytokines, the discovery of IL-23/Th17 axis as a central signaling pathway has unraveled the mechanism of accelerated inflammation in psoriasis. This has provided insights into psoriasis pathogenesis and revolutionized the development of effective biological therapies. Moreover, genome-wide association studies have identified several candidate genes and susceptibility loci associated with this disease. Although involvement of cellular innate and adaptive immune responses and dysregulation of immune cells have been implicated in psoriasis initiation and maintenance, there is still a lack of unifying mechanism for understanding the pathogenesis of this disease. Emerging evidence suggests that psoriasis is a high-mortality disease with additional burden of comorbidities, which adversely affects the treatment response and overall quality of life of patients. Furthermore, changing trends of psoriasis-associated comorbidities and shared patterns of genetic susceptibility, risk factors and pathophysiological mechanisms manifest psoriasis as a multifactorial systemic disease. This review highlights the recent progress in understanding the crucial role of different immune cells, proinflammatory cytokines and microRNAs in psoriasis pathogenesis. In addition, we comprehensively discuss the involvement of various complex signaling pathways and their interplay with immune cell markers to comprehend the underlying pathophysiological mechanism, which may lead to exploration of new therapeutic targets and development of novel treatment strategies to reduce the disastrous nature of psoriasis and associated comorbidities.
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Affiliation(s)
- Amit Kumar Srivastava
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Tara Chand Yadav
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Harvinder Kour Khera
- Tata Institute for Genetics and Society, Centre at InStem, Bangalore, 560065, Karnataka, India; Division of Biological Sciences, University of California, San Diego, La Jolla, CA, 92093, United States
| | - Purusottam Mishra
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Navdeep Raghuwanshi
- Vaccine Formulation & Research Center, Gennova (Emcure) Biopharmaceuticals Limited, Pune, 411057, Maharashtra, India
| | - Vikas Pruthi
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Ramasare Prasad
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India.
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Mallik S, Prasad R, Das K, Sen P. Alcohol functionality in the fatty acid backbone of sphingomyelin guides the inhibition of blood coagulation. RSC Adv 2021; 11:3390-3398. [PMID: 35424312 PMCID: PMC8694017 DOI: 10.1039/d0ra09218e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 01/07/2021] [Indexed: 12/17/2022] Open
Abstract
Cell-surface sphingomyelin (SM) inhibits binary and ternary complex activity of blood coagulation by an unknown mechanism. Here we show the OH functionality of SM contributes in forming the close assembly through intermolecular H-bond and through Ca2+ chelation, which restricts the protein–lipid/protein–protein interactions and thus inhibits the coagulation procedure. Cell-surface sphingomyelin (SM) inhibits binary and ternary complex activity of blood coagulation.![]()
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Affiliation(s)
- S Mallik
- Department of Biological Chemistry, Indian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road, Jadavpur Kolkata-700032 India
| | - R Prasad
- Department of Biological Chemistry, Indian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road, Jadavpur Kolkata-700032 India
| | - K Das
- Department of Biological Chemistry, Indian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road, Jadavpur Kolkata-700032 India
| | - P Sen
- Department of Biological Chemistry, Indian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road, Jadavpur Kolkata-700032 India
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Taku N, Polo A, Zubizarreta E, Prasad R, Hopkins K. External Beam Radiotherapy in West Africa: 1979 - 2019. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Maharaj A, Williams J, Bradshaw T, Güran T, Braslavsky D, Casas J, Chan LF, Metherell LA, Prasad R. Sphingosine-1-phosphate lyase (SGPL1) deficiency is associated with mitochondrial dysfunction. J Steroid Biochem Mol Biol 2020; 202:105730. [PMID: 32682944 PMCID: PMC7482430 DOI: 10.1016/j.jsbmb.2020.105730] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 07/13/2020] [Accepted: 07/14/2020] [Indexed: 01/12/2023]
Abstract
Deficiency in Sphingosine-1-phosphate lyase (S1P lyase) is associated with a multi-systemic disorder incorporating primary adrenal insufficiency (PAI), steroid resistant nephrotic syndrome and neurological dysfunction. Accumulation of sphingolipid intermediates, as seen with loss of function mutations in SGPL1, has been implicated in mitochondrial dysregulation, including alterations in mitochondrial membrane potentials and initiation of mitochondrial apoptosis. For the first time, we investigate the impact of S1P lyase deficiency on mitochondrial morphology and function using patient-derived human dermal fibroblasts and CRISPR engineered SGPL1-knockout HeLa cells. Reduced cortisol output in response to progesterone stimulation was observed in two patient dermal fibroblast cell lines. Mass spectrometric analysis of patient dermal fibroblasts revealed significantly elevated levels of sphingosine-1-phosphate, sphingosine, ceramide species and sphingomyelin when compared to control. Total mitochondrial volume was reduced in both S1P lyase deficient patient and HeLa cell lines. Mitochondrial dynamics and parameters of oxidative phosphorylation were altered when compared to matched controls, though differentially across the cell lines. Mitochondrial dysfunction may represent a major event in the pathogenesis of this disease, associated with severity of phenotype.
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Affiliation(s)
- A Maharaj
- Centre for Endocrinology, William Harvey Research Institute, John Vane Science Centre, Queen Mary, University of London, Charterhouse Square, London, United Kingdom
| | - J Williams
- Centre for Endocrinology, William Harvey Research Institute, John Vane Science Centre, Queen Mary, University of London, Charterhouse Square, London, United Kingdom
| | - T Bradshaw
- Centre for Endocrinology, William Harvey Research Institute, John Vane Science Centre, Queen Mary, University of London, Charterhouse Square, London, United Kingdom
| | - T Güran
- Marmara University, School of Medicine, Department of Paediatric Endocrinology and Diabetes, Istanbul, Turkey
| | - D Braslavsky
- Centro de Investigaciones Endocrinológicas "Dr. Cesar Bergadá" (CEDIE) - CONICET - FEI - División de Endocrinología, Hospital de Niños "Ricardo Gutiérrez", Buenos Aires, Argentina
| | - J Casas
- Research Unit on BioActive Molecules (RUBAM), Department of Biomedicinal Chemistry, IQAC-CSIC, Jordi Girona 18-26, Barcelona, Spain
| | - L F Chan
- Centre for Endocrinology, William Harvey Research Institute, John Vane Science Centre, Queen Mary, University of London, Charterhouse Square, London, United Kingdom
| | - L A Metherell
- Centre for Endocrinology, William Harvey Research Institute, John Vane Science Centre, Queen Mary, University of London, Charterhouse Square, London, United Kingdom
| | - R Prasad
- Centre for Endocrinology, William Harvey Research Institute, John Vane Science Centre, Queen Mary, University of London, Charterhouse Square, London, United Kingdom.
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Prasad R, Prasad SB. Histoprotective effect of rutin against cisplatin-induced toxicities in tumor-bearing mice: Rutin lessens cisplatin-induced toxicities. Hum Exp Toxicol 2020; 40:245-258. [PMID: 32787450 DOI: 10.1177/0960327120947793] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Cisplatin is an effective anticancer drug used against a variety of cancers. The full therapeutic potential of cisplatin is often hampered due to concurrent development of various side effects in the hosts. Rutin, a naturally occurring bioflavonoid shows several pharmacological activities. It has been earlier reported by us that rutin and cisplatin in combination show better antitumor activity against murine ascites Dalton's lymphoma. As cisplatin is given to cancer-bearing hosts only, the present study was undertaken to explore the histoprotective effect of rutin against some toxicities induced by cisplatin in tumor-bearing mice. Cisplatin treatment caused severe damages in tissue architecture such as degenerated hepatocytes with nuclear condensation and sinusoidal dilatation in the liver, glomerular deterioration, infiltration of cells, and tubular congestion in the kidney, and vacuolization of Sertoli cells or dense granules in the cytoplasm and damaged seminiferous tubules in the testes. In the rutin plus cisplatin combination-treated mice, all the abnormal tissue architectural features were decreased. Further, as compared to cisplatin treatment, combination treatment did not show any significant elevation in the liver functional biomarkers (serum aspartate aminotransferase, alanine aminotransferase and alkaline phosphatase) and renal functional biomarkers (serum urea and creatinine levels). The combination treatment reduced the sperm abnormalities also as compared to the cisplatin alone treatment. The in vitro hemolysis assay of red blood cells and scanning electron microscopy revealed that combination treatment lessened the cisplatin-induced hemolysis and abnormalities in RBCs. Thus, the present findings demonstrate that rutin has histoprotective ability against cisplatin-induced toxicities in tumor-bearing mice.
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Affiliation(s)
- R Prasad
- Cell and Tumor Biology Laboratory, Department of Zoology, School of Life Sciences, 29666North-Eastern Hill University, Shillong, India
| | - S B Prasad
- Cell and Tumor Biology Laboratory, Department of Zoology, School of Life Sciences, 29666North-Eastern Hill University, Shillong, India
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Yadav TC, Agarwal V, Srivastava AK, Raghuwanshi N, Varadwaj P, Prasad R, Pruthi V. Insight into Structure-Function Relationships of β-Lactamase and BLIPs Interface Plasticity using Protein-Protein Interactions. Curr Pharm Des 2020; 25:3378-3389. [PMID: 31544712 DOI: 10.2174/1381612825666190911154650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 09/05/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Mostly BLIPs are identified in soil bacteria Streptomyces and originally isolated from Streptomyces clavuligerus and can be utilized as a model system for biophysical, structural, mutagenic and computational studies. BLIP possess homology with two proteins viz., BLIP-I (Streptomyces exofoliatus) and BLP (beta-lactamase inhibitory protein like protein from S. clavuligerus). BLIP consists of 165 amino acid, possessing two homologues domains comprising helix-loop-helix motif packed against four stranded beta-sheet resulting into solvent exposed concave surface with extended four stranded beta-sheet. BLIP-I is a 157 amino acid long protein obtained from S. exofoliatus having 37% sequence identity to BLIP and inhibits beta-lactamase. METHODS This review is intended to briefly illustrate the beta-lactamase inhibitory activity of BLIP via proteinprotein interaction and aims to open up a new avenue to combat antimicrobial resistance using peptide based inhibition. RESULTS D49A mutation in BLIP-I results in a decrease in affinity for TEM-1 from 0.5 nM to 10 nM (Ki). It is capable of inhibiting TEM-1 and bactopenemase and differs from BLIP only in modulating cell wall synthesis enzyme. Whereas, BLP is a 154 amino acid long protein isolated from S. clavuligerus via DNA sequencing analysis of Cephamycin-Clavulanate gene bunch. It shares 32% sequence similarity with BLIP and 42% with BLIP-I. Its biological function is unclear and lacks beta-lactamase inhibitory activity. CONCLUSION Protein-protein interactions mediate a significant role in regulation and modulation of cellular developments and processes. Specific biological markers and geometric characteristics are manifested by active site binding clefts of protein surfaces which determines the specificity and affinity for their targets. TEM1.BLIP is a classical model to study protein-protein interaction. β-Lactamase inhibitory proteins (BLIPs) interacts and inhibits various β-lactamases with extensive range of affinities.
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Affiliation(s)
- Tara C Yadav
- Department of Biotechnology, Indian Institute of Technology, Roorkee-247667, Uttarakhand, India
| | - Vidhu Agarwal
- Department of Bioinformatics, Indian Institute of Information Technology, Allahabad 211015, India
| | - Amit K Srivastava
- Department of Biotechnology, Indian Institute of Technology, Roorkee-247667, Uttarakhand, India
| | - Navdeep Raghuwanshi
- Vaccine Formulation & Research Center, Gennova (Emcure) Biopharmaceuticals Limited, Pune - 11057, Maharashtra, India
| | - Pritish Varadwaj
- Department of Bioinformatics, Indian Institute of Information Technology, Allahabad 211015, India
| | - Ramasare Prasad
- Department of Biotechnology, Indian Institute of Technology, Roorkee-247667, Uttarakhand, India
| | - Vikas Pruthi
- Department of Biotechnology, Indian Institute of Technology, Roorkee-247667, Uttarakhand, India
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33
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Austin K, Prasad R. AB1271 PATIENT EDUCATION IN PSORIATIC ARTHRITIS: A SERVICE EVALUATION AT ONE YEAR. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.5032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Recent studies have demonstrated an increasing burden of musculoskeletal (MSK) diseases worldwide.1The importance of patient education (PE) is often overlooked in the management of long term inflammatory conditions. The European League Against Rheumatism recommends that PE should be integral to standard of care in inflammatory arthritis.2PE increases patients’ knowledge, skills and confidence in managing their condition and improves patient activation (PA). Evidence shows that improved PA results in better outcomes and improved experiences of care. We previously reported on improved knowledge and confidence amongst a small patient group with psoriatic arthritis (PsA) who had attended a pilot education session.3This education session was delivered to a wider group of patients with PsA over a 12 month period; we report on the evaluation received from this service.Objectives:To provide a PE programme to a wider group of patients with PsA, using a multi-disciplinary team (MDT) approach and to evaluate whether this improved patients’ knowledge, skills and confidence in managing their PsA.Methods:Adult patients with PsA attending their rheumatology clinic appointments were invited to a 2.5 hour MDT education session which covered: 1) a general overview of PsA; 2) medications used in PsA; 3) the role of physiotherapy and occupational therapy; 4) flares and self- management. These were interactive sessions, held in a small group setting to allow for informal discussion and questions to the MDT. Written materials including several booklets and online resources were also provided. Patients evaluated their knowledge or understanding before and after each topic covered, on the same day, using an evaluation tool with1-10 Likert scale items. Changes in ratings were analysed using student’s t-tests. Patients were also asked: which aspects they found particularly helpful; if there was anything they would like to have added/ have more of in the session; whether they found the session helpful; whether they would recommend it to other patients; whether they would be interested in developing a PsA patient support group.Results:Four sessions were held over a 12 month period. A total of 32 patients attended; 10 males and 22 females, across a range of age categories. Disease duration varied from less than1 year to over 10 years. There were statistically significant improvements in all topics covered: mean improvement of 91% in how well informed patients felt about PsA overall (p<0.0001); mean improvement of 74% in confidence in accessing help from the MDT (p<0.0001); mean improvement of 122% in how well informed patients were about medications used in PsA (p<0.0001); mean improvement of 99% in patients’ confidence in self-managing a flare (p<0.0001). Aspects that patients found particularly helpful included “The whole session”, “Asking questions to all different professionals”, “Meeting other sufferers”, “Management of flares”, “Fatigue information” and “Online resources”. Overall, 97% of patients (31 out of 32) found the session helpful and would recommend it to others. Over 40% of patients expressed interest in developing a local PsA support group.Conclusion:Following a 2.5 hour education session, improved knowledge, skills and confidence in managing their PsA was reported by 97% of patients, including patients with disease duration of > 10 years. This supports our previous finding that an interactive, group PsA education programme is a feasible and important adjunct to patient care.References:[1]Sebbag E, Felten R, Sagez F, et al. The world-wide burden of musculoskeletal diseases: a systematic analysis of the World Health Organization Burden of Diseases Database. Annals of the Rheumatic Diseases 2019;78:844-848.[2]Zangi HA, Ndosi M, Adams J, et al. EULAR recommendations for patient education for people with inflammatory arthritis. Ann Rheum Dis. 2015;74(6):954-62[3]Austin K, Jones N, Prasad R. Patient Education in psoriatic arthritis: addressing an unmet need. Ann Rheum Dis. 2019;78(suppl 2):A2134.Disclosure of Interests:Keziah Austin: None declared, Roopa Prasad Speakers bureau: Received speaker fees for Celgene, honorarium from Merck, advisory board fees from Bristol-Myers Squibb; all unrelated to the contents of this abstract.
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Mehta U, Prasad R, Kothari K. VARIOUS ANALYTICAL MODELS FOR SUPERCAPACITORS: A MATHEMATICAL STUDY. REFFIT 2020. [DOI: 10.18799/24056537/2020/1/218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Supercapacitors (SCs) are used extensively in high-power potential energy applications like renewable energy systems, electric vehicles, power electronics, and many other industrial applications. This is due to SCs containing high-power density and the ability to respond spontaneously with fast charging and discharging demands. Advancements in material and fabrication techniques have induced a scope for research to improve the application of SCs. Many researchers have studied various SC properties and their effects on energy storage and management performance. In this paper, various fractional calculus-based SC models are summarized, with emphasis on analytical studies from derived classical SC models. Study prevails such parameterized resistor–capacitor networks have simplified the representation of electrical behavior of SCs to deal with the complicated internal structure. Fractional calculus has been used to develop SC models with the aim of understanding their complicated structure. Finally, the properties of different SC models utilized by various researchers to understand the behavior of SCs are listed using an equivalent circuit.
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Shankar PS, Korukonda K, Bendre S, Behera D, Mirchandani L, Awad NT, Prasad R, Bhargava S, Sharma OP, Jindal SK. Diagnoses and management of adult cough: An Indian Environmental Medical Association (EMA) position paper. Respir Med 2020; 168:105949. [PMID: 32469706 DOI: 10.1016/j.rmed.2020.105949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 02/24/2020] [Accepted: 03/27/2020] [Indexed: 01/23/2023]
Abstract
BACKGROUND Cough is a common yet distressing symptom that results in significant health care costs from outpatient visits and related consultations. OBJECTIVE The understanding of the pathobiology of cough in recent times has undergone an evolution with Cough hypersensitivity syndrome (CHS) being suggested in most cases of dry cough. However, in the case of productive cough, ancillary mechanisms including impaired Mucociliary clearance, in addition to hypermucosecretory bronchospastic conditions of Smoker's cough, asthma-COPD overlap, bronchiectasis, and allergic bronchopulmonary aspergillosis, need to be critically addressed while optimizing patient care with symptomatic therapy in outpatient settings of India. METHODS In this review, evidence-based graded recommendations on use of antitussives - & protussives as a Position Paper were developed based on the Level and Quality of Scientific evidence as per Agency for Health Care and Quality (AHRQ) criteria listing and Expert opinions offered by a multidisciplinary EMA panel in India. RESULTS Management of acute or chronic cough involves addressing common issues of environmental exposures and patient concerns before instituting supportive therapy with antitussives or bronchodilatory cough formulations containing mucoactives, anti-inflammatory, or short-acting beta-2 agonist agents. CONCLUSION The analyses provides a real world approach to the management of acute or chronic cough in various clinical conditions with pro- or antitussive agents while avoiding their misuse in empirical settings.
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Affiliation(s)
- P S Shankar
- Emeritus Professor of Medicine, & Senior CEO, KBN Institute of Medical Sciences, Kalaburagi, Karnataka, India
| | | | - S Bendre
- Respiratory Medicine, Nanavati Hospital, Mumbai, India
| | - D Behera
- Respiratory Medicine, PGIMER, Chandigarh, India
| | - L Mirchandani
- Respiratory Medicine, KJ Somaiya Medical College, Mumbai, India
| | - N T Awad
- Respiratory Medicine, LT M Medical College, Mumbai, India
| | - R Prasad
- Director Medical Education & Head Pulm Med, Era's Lucknow Medical College & Hospital, Lucknow, UP, India
| | - S Bhargava
- Respiratory Medicine, Mahatma Gandhi Medical College, Indore, MP, India
| | - O P Sharma
- National Professor of Geriatrics, Secretary: Geriatric Society of India, Delhi, India
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Kumari P, Arora N, Chatrath A, Gangwar R, Pruthi V, Poluri KM, Prasad R. Delineating the Biofilm Inhibition Mechanisms of Phenolic and Aldehydic Terpenes against Cryptococcus neoformans. ACS Omega 2019; 4:17634-17648. [PMID: 31681870 PMCID: PMC6822124 DOI: 10.1021/acsomega.9b01482] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 09/25/2019] [Indexed: 05/31/2023]
Abstract
The recalcitrant biofilm formed by fungus Cryptococcus neoformans is a life-threatening pathogenic condition responsible for further intensifying cryptococcosis. Considering the enhanced biofilm resistance and toxicity of synthetic antifungal drugs, the search for efficient, nontoxic, and cost-effective natural therapeutics has received a major boost. Phenolic (thymol and carvacrol) and aldehydic (citral) terpenes are natural and safe alternatives capable of efficient microbial biofilm inhibition. However, the biofilm inhibition mechanism of these terpenes still remains unclear. In this study, we adopted an integrative biophysical and biochemical approach to elucidate the hierarchy of their action against C. neoformans biofilm cells. The microscopic analysis revealed disruption of the biofilm cell surface with elevation in surface roughness and reduction in cell height. Although all terpenes acted through ergosterol biosynthesis inhibition, the phenolic terpenes also selectively interacted via ergosterol binding. Further, the alterations in the fatty acid profile in response to terpenes attenuated the cell membrane fluidity with enhanced permeability, resulting in pore formation and efflux of the K+/intracellular content. Additionally, mitochondrial depolarization caused higher levels of reactive oxygen species, which led to increased lipid peroxidation and activation of the antioxidant defense system. Indeed, the oxidative stress caused a significant decline in the amount of extracellular polymeric matrix and capsule sugars (mannose, xylose, and glucuronic acid), leading to a reduced capsule size and an overall negative charge on the cell surface. This comprehensive data revealed the mechanistic insights into the mode of action of terpenes on biofilm inhibition, which could be exploited for formulating novel anti-biofilm agents.
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Affiliation(s)
- Poonam Kumari
- Department of Biotechnology, Indian Institute
of Technology Roorkee, Roorkee 247677, Uttarakhand, India
| | - Neha Arora
- Department of Biotechnology, Indian Institute
of Technology Roorkee, Roorkee 247677, Uttarakhand, India
| | - Apurva Chatrath
- Department of Biotechnology, Indian Institute
of Technology Roorkee, Roorkee 247677, Uttarakhand, India
| | - Rashmi Gangwar
- Department of Biotechnology, Indian Institute
of Technology Roorkee, Roorkee 247677, Uttarakhand, India
| | - Vikas Pruthi
- Department of Biotechnology, Indian Institute
of Technology Roorkee, Roorkee 247677, Uttarakhand, India
| | - Krishna Mohan Poluri
- Department of Biotechnology, Indian Institute
of Technology Roorkee, Roorkee 247677, Uttarakhand, India
| | - Ramasare Prasad
- Department of Biotechnology, Indian Institute
of Technology Roorkee, Roorkee 247677, Uttarakhand, India
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van der Scheun FC, Nagelkerke MCM, Kilaru A, Shridhar V, Prasad R, van der Werf TS. Stigma among healthcare workers towards hepatitis B infection in Bangalore, India: a qualitative study. BMC Health Serv Res 2019; 19:736. [PMID: 31640692 PMCID: PMC6805630 DOI: 10.1186/s12913-019-4606-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 10/02/2019] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND With about 50 million people infected with hepatitis B (HBV) in India the burden of disease is high. Stigma has been identified to have a major negative impact on screening, diagnosis and treatment of hepatitis B patients. The aim of this study was to assess the stigma in nurses and physicians in Bangalore, India; studies on stigma in HBV have only been published outside of India. METHODS Semi-structured in-depth-interviews were conducted in the period of March 20th and April 16th 2018 to study stigma and other problems in the care of hepatitis B patients. Stigma was pragmatically defined as a mark of disgrace associated with having a hepatitis B infection. Thirty physicians and nurses in different clinics and hospitals across the city of Bangalore were selected by purposeful sampling and snowball effect until theoretical saturation was reached. RESULTS The following themes were identified during the interviews: feelings when treating a patient; pregnancy and marriage; confidentiality; morality; improvement in care and the difference with HIV. The most stigma was discovered in the theme morality. The majority of our participants mentioned lack of awareness as biggest obstacle in health care of hepatitis B patients. CONCLUSIONS This is the first qualitative study in India exploring hepatitis B stigma among health care workers. Stigma was found in certain themes, such as morality. Though, no unwillingness to treat was found. There was a general lack of awareness amongst patients according to our participants and could jeopardize proper treatment. These results will further help in developing strategies to tackle hepatitis B in India.
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Affiliation(s)
- F C van der Scheun
- University of Groningen, Faculty of Medical Sciences, Antonius Deusinglaan 1, 9713, AV, Groningen, the Netherlands.
| | - M C M Nagelkerke
- University of Groningen, Faculty of Medical Sciences, Antonius Deusinglaan 1, 9713, AV, Groningen, the Netherlands
| | - A Kilaru
- PCMH Restore Health Center, Bangalore, India
| | - V Shridhar
- PCMH Restore Health Center, Bangalore, India
| | - R Prasad
- PCMH Restore Health Center, Bangalore, India.,Academy of Family Physicians of India (AFPI), Karnataka, India
| | - T S van der Werf
- University of Groningen, Faculty of Medical Sciences, Antonius Deusinglaan 1, 9713, AV, Groningen, the Netherlands
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Joshi D, Prasad R, Dash P, Mishra V, Chaurasia R, Pathak A. An interesting association of Guillain Barre syndrome in uncontrolled diabetes mellitus. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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McVeigh LE, Wijetunga I, Ingram N, Marston G, Prasad R, Markham AF, Coletta PL. Development of orthotopic tumour models using ultrasound-guided intrahepatic injection. Sci Rep 2019; 9:9904. [PMID: 31289364 PMCID: PMC6616610 DOI: 10.1038/s41598-019-46410-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 06/25/2019] [Indexed: 01/19/2023] Open
Abstract
Mouse models of human diseases are an essential part of the translational pipeline. Orthotopic tumour mouse models are increasingly being used in cancer research due to their increased clinical relevance over subcutaneous xenograft models, particularly in relation to metastatic disease. In this study, we have developed orthotopic colorectal cancer liver metastases (CRCLM) and primary cholangiocarcinoma (CCA) models in BALB/c nude mice using minimally invasive ultrasound-guided intrahepatic injection. Due to its minimally invasive nature, the method reduced risk from surgical complications whilst being fast and easy to perform and resulted in measurable tumour volumes 1 to 3 weeks post-injection. Tumour volumes were monitored in vivo by weekly high-frequency ultrasound (HF-US) and/or twice weekly bioluminescence imaging (BLI) and confirmed with end-point histology. Take rates were high for human CRC cells (>73%) and for CCA cells (90%). We have demonstrated that this method reliably induces CRCLM and CCAs, in which tumour volume can be monitored throughout using HF-US and/or BLI. This provides a promising experimental tool for future testing of cancer therapeutics in an orthotopic model.
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Affiliation(s)
- L E McVeigh
- Leeds Institute of Medical Research, St James's University Hospital, Leeds, LS9 7TF, UK.
| | - I Wijetunga
- Leeds Institute of Medical Research, St James's University Hospital, Leeds, LS9 7TF, UK
| | - N Ingram
- Leeds Institute of Medical Research, St James's University Hospital, Leeds, LS9 7TF, UK
| | - G Marston
- Leeds Institute of Medical Research, St James's University Hospital, Leeds, LS9 7TF, UK
| | - R Prasad
- Department of Hepatobiliary and Transplant Surgery, St. James's University Hospital, Leeds, LS9 7TF, UK
| | - A F Markham
- Leeds Institute of Medical Research, St James's University Hospital, Leeds, LS9 7TF, UK
| | - P L Coletta
- Leeds Institute of Medical Research, St James's University Hospital, Leeds, LS9 7TF, UK
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Gupta S, Prasad R, Yuen S, Lynnhtun K, Rutherford N, Dickson S. OUTCOME AFTER SALVAGE RADIOTHERAPY TO FDG-PET/CT AVID DISEASE POST CHEMOTHERAPY IN ADVANCED STAGE DIFFUSE LARGE B-CELL LYMPHOMA (DLBCL). Hematol Oncol 2019. [DOI: 10.1002/hon.94_2631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- S.A. Gupta
- Radiation Oncology; Calvary Mater Hospital; Waratah Australia
| | - R. Prasad
- Haematology; Calvary Mater Hospital; Waratah Australia
| | - S. Yuen
- Haematology; Calvary Mater Hospital; Waratah Australia
| | - K. Lynnhtun
- Pathology; John Hunter Hospital; New Lambton Heights Australia
| | - N. Rutherford
- Nuclear Medicine; Calvary Mater Hospital; Waratah Australia
| | - S. Dickson
- Radiation Oncology; Calvary Mater Hospital; Waratah Australia
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Schwind KM, Aktan E, Prasad R, Cerchez M, Eversheim D, Willi O, Aurand B. An online beam profiler for laser-accelerated protons. Rev Sci Instrum 2019; 90:053307. [PMID: 31153256 DOI: 10.1063/1.5086248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 05/07/2019] [Indexed: 06/09/2023]
Abstract
The design and operation of an online energy and spatially resolving detector based on three different scintillators for laser-driven protons are described. The device can be used for a multi-Hertz recording rate. The spatial resolution is <0.5 mm, allowing to retrieve details of the proton beam which is of interest, e.g., for radiographic applications. At the same time, the particle energy is divided into three energy bands between 1 MeV and 5 MeV to retrieve the proton energy spectrum. The absolute response of the detector was calibrated at a conventional proton accelerator.
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Affiliation(s)
- K M Schwind
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - E Aktan
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - R Prasad
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - M Cerchez
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - D Eversheim
- Helmholtz-Institut für Strahlen- und Kernphysik, Rheinische Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - O Willi
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - B Aurand
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
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Hashmi TR, Devi SR, Ahmad A, Meshram NM, Prasad R. Genetic Status and Endosymbionts Diversity of Bemisia tabaci (Gennadius) on Hosts Belonging to Family Malvaceae in India. Neotrop Entomol 2019; 48:207-218. [PMID: 30374735 DOI: 10.1007/s13744-018-0639-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 09/26/2018] [Indexed: 06/08/2023]
Abstract
A study was instigated to examine the genetic status and distribution of known endosymbionts namely Portiera, Rickettsia, Wolbachia, Cardinium, and Arsenophonus in the populations of Bemisia tabaci (Gennadius) from three host plants: cotton (Gossypium herbaceum), okra (Abelmoschus esculentus L.), and China rose (Hibiscus rosa-sinensis) belonging to the family Malvaceae. The presence of four secondary endosymbionts Rickettsia, Wolbachia, Cardinium, and Arsenophonus was checked in Bemisia tabaci populations. Phylogenetic analyses grounded on the mitochondrial cytochrome oxidase I gene (mtCO1) unveiled the presence of Asia 1, Asia II 1, and Asia II 7 genetic groups for Bemisia tabaci on abovementioned crops. Individuals were examined for symbiotic bacterial infection with specific primers amplifying the 16S rRNA gene for Portiera, Rickettsia, Cardinium, and Wolbachia, and the 23S rRNA gene for Arsenophonus. The results show that Portiera was present in all the Bemisia tabaci samples. However, variations were noted in the circulation frequencies of secondary endosymbionts among the Bemisia tabaci populations. A significant difference was noticed in the distribution frequency of Rickettsia between cotton and China rose or okra with their p values as 0.016 and 0.033 respectively. The uneven incidence of secondary endosymbionts ropes the assumption that each endosymbiotic bacterium not only has a role in the endurance but may contribute to the polyphagous nature of Bemisia tabaci. It also brings an uncomplicated evidence for progressive studies on control measures of this notorious insect pest.
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Affiliation(s)
- T R Hashmi
- Division of Entomology, Indian Agricultural Research Institute, New Delhi, India.
- Amity Institute of Microbial Technology, Amity University, Noida, Uttar Pradesh, India.
| | - S R Devi
- Division of Entomology, Indian Agricultural Research Institute, New Delhi, India
| | - A Ahmad
- Division of Entomology, Indian Agricultural Research Institute, New Delhi, India
| | - N M Meshram
- Division of Entomology, Indian Agricultural Research Institute, New Delhi, India
| | - R Prasad
- Amity Institute of Microbial Technology, Amity University, Noida, Uttar Pradesh, India
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Grieser S, Aurand B, Aktan E, Bonaventura D, Büscher M, Cerchez M, Engin I, Leßmann L, Mannweiler C, Prasad R, Willi O, Khoukaz A. Nm-sized cryogenic hydrogen clusters for a laser-driven proton source. Rev Sci Instrum 2019; 90:043301. [PMID: 31042983 DOI: 10.1063/1.5080011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 03/20/2019] [Indexed: 06/09/2023]
Abstract
A cryogenic hydrogen cluster-jet target is described which has been used for laser-plasma interaction studies. Major advantages of the cluster-jet are, on the one hand, the compatibility to pulsed high repetition lasers as the target is operated continuously and, on the other hand, the absence of target debris. The cluster-jet target was characterized using the Mie-scattering technique allowing to determine the cluster size and to compare the measurements with an empirical formula. In addition, an estimation of the cluster beam density was performed. The system was implemented at the high power laser system ARCTURUS, and the measurements show the acceleration of protons after irradiation of the cluster target by high intensity laser pulses with a repetition rate of 5 Hz.
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Affiliation(s)
- S Grieser
- Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
| | - B Aurand
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - E Aktan
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - D Bonaventura
- Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
| | - M Büscher
- Peter Grünberg Institut, PGI-6, Forschungszentrum Jülich, 52428 Jülich, Germany
| | - M Cerchez
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - I Engin
- Peter Grünberg Institut, PGI-6, Forschungszentrum Jülich, 52428 Jülich, Germany
| | - L Leßmann
- Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
| | - C Mannweiler
- Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
| | - R Prasad
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - O Willi
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität, 40225 Düsseldorf, Germany
| | - A Khoukaz
- Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
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Yadav TC, Kumar N, Raj U, Goel N, Vardawaj PK, Prasad R, Pruthi V. Exploration of interaction mechanism of tyrosol as a potent anti-inflammatory agent. J Biomol Struct Dyn 2019; 38:382-397. [PMID: 30887884 DOI: 10.1080/07391102.2019.1575283] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Drug discovery for a vigorous and feasible lead candidate is a challenging scientific mission as it requires expertise, experience, and huge investment. Natural products and their derivatives having structural diversity are renowned source of therapeutic agents since many years. Tyrosol (a natural phenylethanoid) has been extracted from olive oil, and its structure was confirmed by elemental analysis, FT-IR, FT-NMR, and single crystal X-ray crystallography. The conformational analysis for tyrosol geometry was performed by Gaussian 09 in terms of density functional theory. Validation of bond lengths and bond angles obtained experimentally as well as theoretically were performed with the help of curve fitting analysis, and values of correlation coefficient (R) obtained as 0.988 and 0.984, respectively. The charge transfer within the tyrosol molecule was confirmed by analysis of HOMO→LUMO molecular orbitals. In molecular docking with COX-2 (PDB ID: 5F1A), tyrosol was found to possess satisfactory binding affinity as compared to other NSAIDs (Aspirin, Ibuprofen, and Naproxen) and a COX-2 selective drug (Celecoxib). ADMET prediction, drug-likeness and bioactivity score altogether confirm the lead/drug like potential of tyrosol. Further investigation of simulation quality plot, RMSD and RMSF plots, ligands behavior plot as well as post simulation analysis manifest the consistency of 5F1A-tyrosol complex throughout the 20 ns molecular simulation process that signifies its compactness and stability within the receptor pocket. AbbreviationsADMETAbsorption, Distribution, Metabolism, Excretion and ToxicityÅAngstromCOX-2Cyclooxygenase-2DFTDensity Functional TheoryDMFDimethylformamideFMOFrontier Molecular OrbitalFT-IRFourier-transform Infrared SpectroscopyFT-NMRNuclear Magnetic Resonance SpectroscopyHOMOHighest Occupied Molecular OrbitalLUMOLowest Unoccupied Molecular OrbitalMDMolecular DynamicsNSNanosecondNSAIDsNon-steroidal anti-inflammatory drugsOPEOsiris Property ExplorerRMSDRoot-Mean-Square DeviationRMSFRoot Sean Square FluctuationCommunicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Tara Chand Yadav
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, India
| | - Naresh Kumar
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India
| | - Utkarsh Raj
- Department of Bioinformatics, Indian Institute of Information Technology Allahabad, Allahabad, India
| | - Nidhi Goel
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Pritish Kumar Vardawaj
- Department of Bioinformatics, Indian Institute of Information Technology Allahabad, Allahabad, India
| | - Ramasare Prasad
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, India
| | - Vikas Pruthi
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, India
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Chatrath A, Gangwar R, Kumari P, Prasad R. In Vitro Anti-Biofilm Activities of Citral and Thymol Against Candida Tropicalis. J Fungi (Basel) 2019; 5:jof5010013. [PMID: 30717454 PMCID: PMC6462931 DOI: 10.3390/jof5010013] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 01/25/2019] [Accepted: 01/31/2019] [Indexed: 12/02/2022] Open
Abstract
Candida tropicalis is an emerging non-albicans Candida species which is pathogenic to the immune-compromised humans, especially in tropical countries, including India. The acquired resistance of Candida species towards antifungal therapies is of major concern. Moreover, limited efficacy and dosage constraint of synthetic drugs have indicated the prerequisite of finding new and natural drugs for treatment. In the present study, we have compared the influence of citral and thymol on C. tropicalis and its biofilm along with expression levels of certain antifungal tolerance genes. The antifungal and anti-biofilm activities of the both were studied using 2,3-bis(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide sodium salt (XTT) reduction assay, field emission scanning electron microscope (FE-SEM) and confocal laser scanning microscope (CLSM) and real-time reverse transcription polymerase chain reaction (RT-PCR) analysis. Citral and thymol have damaged the cells with distorted surface and less viability. Quantitative real-time PCR analysis showed augmented expression of the cell membrane biosynthesis genes including ERG11/CYT450 against citral and the cell wall related tolerance genes involving CNB1 against thymol thus, depicting their differential mode of actions.
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Affiliation(s)
- Apurva Chatrath
- Molecular Biology & Proteomics Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee-247667 Uttarakhand, India.
| | - Rashmi Gangwar
- Molecular Biology & Proteomics Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee-247667 Uttarakhand, India.
| | - Poonam Kumari
- Molecular Biology & Proteomics Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee-247667 Uttarakhand, India.
| | - Ramasare Prasad
- Molecular Biology & Proteomics Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee-247667 Uttarakhand, India.
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Murthy K, Prasad R, Deshpande A. Implant-ADM based breast reconstruction: “A tale of two techniques”. Eur J Surg Oncol 2019. [DOI: 10.1016/j.ejso.2018.10.326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Pradeep K, Wig J, Panda NB, Prasad R. Dose-related Effect of Propofol on Pancreatic Enzymes and Triglyceride Levels in Patients Undergoing Non-abdominal Surgery. Anaesth Intensive Care 2019; 37:27-31. [DOI: 10.1177/0310057x0903700113] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- K. Pradeep
- Departments of Anaesthesia and Intensive Care and Biochemistry, Postgraduate Institute of Medical Education and Research, Chandigarh, India
- Department of Anaesthesia and Intensive Care
| | - J. Wig
- Departments of Anaesthesia and Intensive Care and Biochemistry, Postgraduate Institute of Medical Education and Research, Chandigarh, India
- Department of Anaesthesia and Intensive Care
| | - N. B. Panda
- Departments of Anaesthesia and Intensive Care and Biochemistry, Postgraduate Institute of Medical Education and Research, Chandigarh, India
- Department of Anaesthesia and Intensive Care
| | - R. Prasad
- Departments of Anaesthesia and Intensive Care and Biochemistry, Postgraduate Institute of Medical Education and Research, Chandigarh, India
- Department of Biochemistry
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Arora N, Kumari P, Kumar A, Gangwar R, Gulati K, Pruthi PA, Prasad R, Kumar D, Pruthi V, Poluri KM. Delineating the molecular responses of a halotolerant microalga using integrated omics approach to identify genetic engineering targets for enhanced TAG production. Biotechnol Biofuels 2019; 12:2. [PMID: 30622644 PMCID: PMC6318984 DOI: 10.1186/s13068-018-1343-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 12/17/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Harnessing the halotolerant characteristics of microalgae provides a viable alternative for sustainable biomass and triacylglyceride (TAG) production. Scenedesmus sp. IITRIND2 is a fast growing fresh water microalga that has the capability to thrive in high saline environments. To understand the microalga's adaptability, we studied its physiological and metabolic flexibility by studying differential protein, metabolite and lipid expression profiles using metabolomics, proteomics, real-time polymerase chain reaction, and lipidomics under high salinity conditions. RESULTS On exposure to salinity, the microalga rewired its cellular reserves and ultrastructure, restricted the ions channels, and modulated its surface potential along with secretion of extrapolysaccharide to maintain homeostasis and resolve the cellular damage. The algal-omics studies suggested a well-organized salinity-driven metabolic adjustment by the microalga starting from increasing the negatively charged lipids, up regulation of proline and sugars accumulation, followed by direction of carbon and energy flux towards TAG synthesis. Furthermore, the omics studies indicated both de-novo and lipid cycling pathways at work for increasing the overall TAG accumulation inside the microalgal cells. CONCLUSION The salt response observed here is unique and is different from the well-known halotolerant microalga; Dunaliella salina, implying diversity in algal response with species. Based on the integrated algal-omics studies, four potential genetic targets belonging to two different metabolic pathways (salt tolerance and lipid production) were identified, which can be further tested in non-halotolerant algal strains.
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Affiliation(s)
- Neha Arora
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667 India
| | - Poonam Kumari
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667 India
| | - Amit Kumar
- Centre of Biomedical Research, SGPGIMS, Lucknow, Uttar Pradesh 226014 India
| | - Rashmi Gangwar
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667 India
| | - Khushboo Gulati
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667 India
| | - Parul A. Pruthi
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667 India
| | - Ramasare Prasad
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667 India
| | - Dinesh Kumar
- Centre of Biomedical Research, SGPGIMS, Lucknow, Uttar Pradesh 226014 India
| | - Vikas Pruthi
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667 India
- Centre for Transportation Systems, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667 India
| | - Krishna Mohan Poluri
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667 India
- Centre for Transportation Systems, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667 India
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Prasad R, Gelder K, Wiles R. The patient's experience of defaecating proctography: Comparing magnetic resonance with conventional fluoroscopy techniques. Radiography (Lond) 2019; 25:24-27. [PMID: 30599825 DOI: 10.1016/j.radi.2018.07.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 07/10/2018] [Accepted: 07/14/2018] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Fluoroscopy and MRI are currently used to investigate defaecation and pelvic floor dysfunction, with advantages and disadvantages to both modalities. Anecdotally it is suspected that MRI, allowing more privacy, may be better tolerated by patients but that symptoms may be more easily replicated with fluoroscopic technique due to the physiological position. The aim of this study was to evaluate the patient experience of both techniques to potentially help guide the choice of defaecating proctography modality in the future. METHODS This prospective study was conducted June 2015-March 2017 in a large teaching hospital. Patients undergoing fluoroscopy (FDP) or MR defaecating proctography (MRDP) completed a post-procedure questionnaire rating their satisfaction (1-5, 5 being most satisfied) of different aspects of the test. RESULTS 24 patients underwent FDP and 17 MRDP. Both procedures were scored highly in general for all questions with mean >4.1 and median 5, out of 5. Though not statistically significant, the mean scores for all aspects of the test were slightly higher for fluoroscopy than MR. As well as scoring higher for comfort (4.8 vs 4.4) and dignity maintained (4.6 vs 4.1), the patients who underwent fluoroscopy thought it was easier to replicate symptoms than the patient who underwent MR defaecating proctography (4.6 vs 4.2). CONCLUSION This study shows that both FDP and MRDP are well tolerated in the investigation of defaecation and pelvic floor dysfunction. FDP was scored consistently higher than MRDP, but this was not statistically significant. Thus, this study suggests that patient tolerance of the test is unlikely to be any worse for FDP than for MRDP. Clinicians and radiologists should take into account risks of radiation exposure as well as potential for surgical management when making their decision as to which test is appropriate. The authors recommend that if the patient is unable to replicate their symptoms in MRDP, fluoroscopy should be performed to ensure significant pathology is not being missed.
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Affiliation(s)
- R Prasad
- Department of Radiology, Royal Liverpool and Broadgreen University Hospitals NHS Trust, Prescot Street, Liverpool, L7 8XP, UK.
| | - K Gelder
- Department of Radiology, Royal Liverpool and Broadgreen University Hospitals NHS Trust, Prescot Street, Liverpool, L7 8XP, UK.
| | - R Wiles
- Department of Radiology, Royal Liverpool and Broadgreen University Hospitals NHS Trust, Prescot Street, Liverpool, L7 8XP, UK.
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Prasad R, Banerjee S, Kharshiing CE, Bhattacharjee A, Prasad SB. Rutin-mediated Apoptosis and Glutathione Changes in Ascites Daltons Lymphoma Cells: In silico Analysis of Rutin Interactions with Some Antiapoptotic and Glutathione-related Proteins. Indian J Pharm Sci 2019. [DOI: 10.36468/pharmaceutical-sciences.563] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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