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Kumari A, Mishra AK, Sharma R, Al-Qaisi S, Moayad AJA, Alshomrany AS, Sfina N, Dar SA, Srivastava V. Ab initio investigations of the structure-stability, mechanical, electronic, thermodynamic and optical properties of Ti 2FeAs Heusler alloy. RSC Adv 2024; 14:6762-6775. [PMID: 38405071 PMCID: PMC10884792 DOI: 10.1039/d3ra07249e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 02/07/2024] [Indexed: 02/27/2024] Open
Abstract
In this study, we employed density functional theory coupled with the full-potential linearized augmented plane-wave method (FP-LAPW) to investigate the structural, electronic, and magnetic properties of the Ti2FeAs alloy adopting the Hg2CuTi-type structure. Our findings demonstrate that all the examined structures exhibit ferromagnetic (FM) behaviour. By conducting electronic band structure calculations, we observed an energy gap of 0.739 eV for Ti2FeAs in the spin-down state and metallic intersections at the Fermi level in the spin-up state. These results suggest the half-metallic (HM) nature of Ti2FeAs, where the Ti-d and Fe-d electronic states play a significant role near the Fermi level. Additionally, the obtained total magnetic moments are consistent with the Slater-Pauling rule (Mtot = Ztot - 18), indicating 100% spin polarization for these compounds. To explore their optical properties, we employed the dielectric function to compute various optical parameters, including absorption spectra, energy-loss spectra, refractive index, reflectivity, and conductivity. Furthermore, various thermodynamic parameters were evaluated at different temperatures and pressures. The results obtained from the elastic parameters reveal the anisotropic and ductile nature of the Ti2FeAs compound. These findings suggest that Ti2FeAs has potential applications in temperature-tolerant devices and optoelectronic devices as a UV absorber.
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Affiliation(s)
- Anjali Kumari
- Department of Physics, Applied Science Cluster, University of Petroleum and Energy Studies Bidholi via Premnagar Dehradun Uttrakhand 248007 India
| | - Abhishek Kumar Mishra
- Department of Physics, Applied Science Cluster, University of Petroleum and Energy Studies Bidholi via Premnagar Dehradun Uttrakhand 248007 India
| | - Ramesh Sharma
- Department of Applied Science, Feroze Gandhi Institute of Engineering and Technology Raebareli 229001 Uttar Pradesh India
| | - Samah Al-Qaisi
- Palestinian Ministry of Education and Higher Education Nablus Palestine
| | - A J A Moayad
- Department of Material Science, Malawi University of Science and Technology Limbe Malawi
| | - Ali S Alshomrany
- Department of Physics, College of Sciences, Umm Al-Qura University Al Taif HWY Mecca 24381 Saudi Arabia
| | - N Sfina
- College of Sciences and Arts in Mahayel Asir, Department of Physics, King Khalid University Abha Saudi Arabia
| | - Sajad Ahmed Dar
- Department of Physics, Govt. Motilal Vigyan Mahavidyalaya College Bhopal Madhya Pradesh India
| | - Vipul Srivastava
- Department of Physics, School of Chemical Engineering & Physical Sciences, Lovely Professional University Delhi-Jalandhar Highway Phagwara-144411 Punjab India
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Chaudhary V, Chaturvedi S, Wadhwa A, Chaudhary R, Gautam D, Sharma D, Kumar R, Mishra AK. Design, development and bio-evaluation of a novel radio-ligand 99mTc-THQ-DTPA as a sigma 2 receptor specific breast tumor imaging agent. Bioorg Med Chem 2024; 97:117515. [PMID: 38043245 DOI: 10.1016/j.bmc.2023.117515] [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: 07/24/2023] [Revised: 10/13/2023] [Accepted: 10/31/2023] [Indexed: 12/05/2023]
Abstract
Over-expression of sigma-2 receptor in cancer cells provides an opportunity to develop molecular probes for diagnosis, even for non-receptor specific malignancies like triple negative breast cancers. In this work, a novel sigma-2 receptor ligand [THQ-DTPA] has been synthesized and characterized using 6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline (THQ) and diethylenetriaminepentaacetic acid (DTPA). The ligand is further chelated with 99mTc for application as metal based radiotracer [99mTc-THQ-DTPA]. Radiolabelling with 99mTc was achieved in an excellent yield of 98.0 ± 0.5% using stannous chloride as a reducing agent. The radioligand was found to be stable in human serum up-to 24 h, bio-compatible with less than 4% hemolysis, and exhibited high binding with sigma receptors isolated from rat liver membrane (Kd of 16.32 ± 4.93 nM and Bmax of 0.5232 ± 0.06 pmol/mg). Bio-distribution studies in triple-negative breast tumor bearing nude mice showed high tumor uptake after 30 min of injection with tumor/muscle (T/M) ratio of 3.58 ± 0.09. At 240 min, the T/M ratio (2.84 ± 0.20) decreased by 35% when administered in sigma blocked tumor bearing mice (1.81 ± 0.16) suggesting the selectivity of the ligand. Tumor imaging in gamma camera indicated a contrast of 3.56 at 30 min p.i. The above findings indicate that the ligand 99mTc-THQ-DTPA binds to sigma-2 receptors with high affinity and has potential for triple-negative breast tumor imaging.
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Affiliation(s)
- Vishakha Chaudhary
- Kirori Mal College, University of Delhi, North Campus, University Enclave, Delhi 110007, India; Department of Radiological Nuclear and Imaging Science, INMAS, DRDO, Timarpur, Delhi 110054, India
| | - Shubhra Chaturvedi
- Department of Radiological Nuclear and Imaging Science, INMAS, DRDO, Timarpur, Delhi 110054, India.
| | - Anju Wadhwa
- University of California, San Francisco 94107, United States
| | - Ritika Chaudhary
- Department of Radiological Nuclear and Imaging Science, INMAS, DRDO, Timarpur, Delhi 110054, India; Dr. B.R. Ambedkar Center for Biomedical Research, University Enclave, Delhi 110007, India
| | - Divya Gautam
- Department of Radiological Nuclear and Imaging Science, INMAS, DRDO, Timarpur, Delhi 110054, India; Centre for Nanotechnology, Indian Institute of Technology, Roorkee 247667, India
| | - Deepika Sharma
- Department of Radiological Nuclear and Imaging Science, INMAS, DRDO, Timarpur, Delhi 110054, India; Department of Chemistry, Banaras Hindu University, Varanasi 221005, India
| | - Rupesh Kumar
- Kirori Mal College, University of Delhi, North Campus, University Enclave, Delhi 110007, India
| | - A K Mishra
- Department of Radiological Nuclear and Imaging Science, INMAS, DRDO, Timarpur, Delhi 110054, India.
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Dhasmana A, Mishra AK, Khoja UB, Mishra S. Molecular structure, spectral analysis and chemical activity of sabizabulin: A computational study. J Mol Graph Model 2023; 125:108618. [PMID: 37678041 DOI: 10.1016/j.jmgm.2023.108618] [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: 06/09/2023] [Revised: 08/07/2023] [Accepted: 08/28/2023] [Indexed: 09/09/2023]
Abstract
In this study, a detailed computational spectroscopic investigation of sabizabulin, a small molecule known as a tubulin inhibitor with potential antineoplastic, antiviral, and anti-inflammatory activities, has been presented. Our work utilizes Density Functional Theory (DFT) calculations to explore molecular optimization, thermodynamic characteristics, and the analysis of normal modes with vibrational assignments. We calculate essential properties such as standard zero-point vibrational energy, entropy, dipole moment, etc., based on data extracted from the optimized molecular structure. Additionally, we examine Mulliken charges and the Molecular Electrostatic Potential (MEP) plot to comprehend the electronic distribution and chemical activity of sabizabulin. Our findings provide valuable insights into the spectroscopic properties of sabizabulin, highlighting its potential therapeutic applications. Our work aims to explore future research directions that could expand the understanding of sabizabulin's actions and enhance its applicability in medical treatments.
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Affiliation(s)
- Abhishek Dhasmana
- Department of Physics, Graphic Era Hill University, Dehradun, 248002, India
| | - Abhishek Kumar Mishra
- Department of Physics, Applied Science Cluster, School of Engineering, University of Petroleum and Energy Studies (UPES), Dehradun, 248007, Uttarakhand, India; Quantum Computing Centre, School of Computer Science, University of Petroleum and Energy Studies (UPES), Dehradun, 248007, Uttarakhand, India.
| | - Ummer Bashir Khoja
- Department of Allied Sciences, Graphic Era Deemed to be University, Clement Town, Dehradun, 248002, Uttarakhand, India
| | - Soni Mishra
- Department of Physics, Graphic Era Hill University, Dehradun, 248002, India.
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Roy A, Biswas S, Duari S, Maity S, Mishra AK, Souza ARD, Elsharif AM, Morgon NH, Biswas S. Regioselective Transition Metal-Free Catalytic Ring Opening of 2 H-Azirines by Phenols and Naphthols; One-Pot Access to Benzo- and Naphthofurans. J Org Chem 2023; 88:15580-15588. [PMID: 37933871 DOI: 10.1021/acs.joc.3c01266] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Benzofuran and naphthofuran derivatives are synthesized from readily available phenols and naphthols. Regioselective ring openings of 2H-azirine followed by in situ aromatization using a catalytic amount of Brønsted acid have established the novelty of the methodology. The involvement of a series of 2H-azirines with a variety of phenols, 1-naphthols, and 2-naphthols showed the generality of the protocol. In-depth density functional theory calculations revealed the reaction mechanism with the energies of the intermediates and transition states of a model reaction. An alternate pathway of the mechanism has also been proposed with computer modeling.
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Affiliation(s)
- Arnab Roy
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700 009, West Bengal, India
| | - Subrata Biswas
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700 009, West Bengal, India
| | - Surajit Duari
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700 009, West Bengal, India
| | - Srabani Maity
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700 009, West Bengal, India
| | - Abhishek Kumar Mishra
- Department of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, Uttar Pradesh, India
| | - Aguinaldo R de Souza
- Department of Chemistry, School of Science, São Paulo State University, Bauru 17033-360, São Paulo, Brazil
| | - Asma M Elsharif
- Department of Chemistry, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Nelson H Morgon
- Department of Physical Chemistry, Institute of Chemistry, Campinas State University, Campinas 13083-970, São Paulo, Brazil
| | - Srijit Biswas
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700 009, West Bengal, India
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Mishra AK, Anjali K, Singh H, Mishra A, Kumar A. Synthesis and in silico studies of some new pyrrolidine derivatives and their biological evaluation for analgesic and anti-inflammatory activity. Ann Pharm Fr 2023; 81:801-813. [PMID: 36931432 DOI: 10.1016/j.pharma.2023.03.002] [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: 12/15/2022] [Revised: 03/10/2023] [Accepted: 03/10/2023] [Indexed: 03/17/2023]
Abstract
BACKGROUND An array of commercially viable intermediate molecules necessary for the synthesis of a variety of bioactive molecules are chemically synthesized by pyrrolidine and its derivatives, which play a significant role in drug design and development process. AIM The aim of the present research work was to explore the synthesis of some new pyrrolidine derivatives and to perform their in silico studies and finally evaluation of analgesic and anti-inflammatory activity. OBJECTIVE The purpose of this study was to synthesis new pyrrolidine derivatives, examine how they affected the COX-1 and COX-2 enzymes computationally, and to screen their in vivo analgesic and anti-inflammatory activity on laboratory animals. METHOD The new pyrrolidine derivatives were synthesized by condensing N-(3-acetylphenyl)-2-(pyrrolidin-1-yl)acetamide with substituted aniline in ethanol in the presence of catalytic amounts of glacial acetic acid. The structures of novel pyrrolidine derivatives were characterised using IR, NMR, and mass spectroscopy. Several molecular properties of the newly synthesized derivatives were calculated in order to evaluate the nature of the drug-like candidate. A specific reference cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2) enzyme was used to dock the newly synthesized pyrrolidine derivatives. RESULTS From the observed data, it was noted that amongst all newly synthesized compounds, A-1 and A-4 exhibited the highest anti-inflammatory and analgesic effects, respectively. CONCLUSION On the basis of findings of present research, it was concluded that A-1 and A-4 might be utilized as a promising new lead compound for Non-Steroidal Anti-Inflammatory Drug (NSAIDs) development.
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Affiliation(s)
- A K Mishra
- Drug Design Laboratory, Pharmacy Academy, IFTM University, 244001 Moradabad, India.
| | - Km Anjali
- Drug Design Laboratory, School of Pharmaceutical Sciences, IFTM University, 244001 Moradabad, India
| | - H Singh
- Drug Design Laboratory, School of Pharmaceutical Sciences, IFTM University, 244001 Moradabad, India
| | - A Mishra
- School of Pharmaceutical Sciences, Delhi Pharmaceutical Sciences & Research University, 110017 New Delhi, India
| | - A Kumar
- Drug Design Laboratory, School of Pharmaceutical Sciences, IFTM University, 244001 Moradabad, India
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Mishra S, Mishra AK, Sharma R. Structural dynamics of chlorpromazine (CPZ) drug with dipalmitoylphosphatidylcholine (DPPC) lipid: a potential drug for SARS-CoV-2. J Biomol Struct Dyn 2023; 41:7595-7602. [PMID: 36124814 DOI: 10.1080/07391102.2022.2123393] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 09/04/2022] [Indexed: 10/14/2022]
Abstract
There is an urgent requirement for drug discovery and more importantly drug repositioning due to infectious new Severe Acute Respiratory Syndrome coronavirus 2. As per the recent report published in the journal L'Encéphale in May 2020, there is a planned ReCoVery Study examining the repurposing the chlorpromazine for the treatment of COVID-19. Here, we apply a combined Raman microspectroscopy and DFT-MD approach to investigate the structural dynamics of the Chlorpromazine (CPZ) drug with dipalmitoylphosphatidylcholine (DPPC) lipid bilayer, identifying the specific position of the drug in the DPPC lipid bilayer. The intensity ratios of the Raman peaks I2935/I2880, I1097/I1064 and I1097/I1129 are representative of the interaction of drugs with lipid alkyl chains and furnish conformation of lipid alkyl chains. Raman imaging microscopy for the study of the distribution of CPZ inside the lipid vesicles is reported. We also investigated the influence of order and disorder ratio in the CPZ on the DPPC liposomes prepared on phase transition temperature. HIGHLIGHTSDrug-membrane interactions using micromolar concentrations of both lipid and drugs.Neuroleptic drug and DPPC vesicles composed of DPPC/drug mixtures reveal qualitative differences between the Raman spectraThe temperature-controlled Raman microspectroscopic study has demonstrated that below phase-transition temperature, the fatty acid chains of the phospholipids are stiff and packed in a highly ordered array.DFT and MD simulations to understand molecular interactions, structural dynamics, and Raman spectra.Above phase-transition temperature, the chains are disordered and possess more motional freedom. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Soni Mishra
- Department of Physics, Graphic Era Hill University, Dehradun, India
| | - Abhishek Kumar Mishra
- Department of Physics, School of Engineering, University of Petroleum and Energy Studies, Dehradun, Uttrakhand, India
| | - Ramesh Sharma
- Department of Applied Science, Feroze Gandhi Institute of Engineering and Technology, Raebareli, Uttarpradesh, India
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Laskar BI, Mishra AK, Shukla PK. Role of graphene in scavenging methyl cations: a DFT study. J Mol Model 2023; 29:299. [PMID: 37646844 DOI: 10.1007/s00894-023-05662-w] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 07/12/2023] [Indexed: 09/01/2023]
Abstract
CONTEXT It is known that methylating agents methylate DNA by transferring a methyl cation (CH3+) to the nucleophilic sites in DNA bases and DNA methylation is implicated in cancer and other pathological conditions. Therefore, it is important to scavenge CH3+ ion in order to protect DNA from methylation. Graphene is considered to be a versatile material for use in a wide variety of fields including sensors, antioxidants, drug delivery and DNA sequencing. In this work, we have theoretically investigated the interaction of CH3+ ions with graphene surface with an aim to understand if pristine graphene can be used as a substrate to adsorb CH3+ cations generated from harmful methylating agents. The computed adsorption energies show that adsorption of one, two and three CH3+ ions on graphene is favourable as the adducts thus formed are found to be substantially stable in both gas phase and aqueous media. The Bader charge transfer analysis and density of states (DOS) calculation also indicate a strong interaction between graphene and CH3+ ions. Thus, our results show that pristine graphene can be used as a substrate to scavenge CH3+ ions. METHODS The spin polarised density functional theory (DFT) calculations employing PBE functional, ultrasoft pseudopotentials and plane wave basis set having kinetic energy cut-offs of 40 Ry and 400 Ry, respectively, for wave functions and charge densities were carried out to study the adsorption of CH3+ ion(s) on the pristine graphene surface. The Grimme's DFT-D2 method was used for the estimation of van der Waals interactions. The 'dipole correction' along z-direction was also applied for adsorption study. The Marzari-Vanderbilt smearing and Monkhorst-Pack k-point grid were employed for the Brillouin zone sampling. A 6 × 6 graphene supercell with a vertical cell dimension of 18 Å was considered for the adsorption study. The charge transfer between the CH3+ ion(s) and graphene was estimated using Bader charge analysis. The implicit solvation model (SCCS) was used to estimate the solvent effect of aqueous media. All the calculations were performed using QUANTUM ESPRESSO package.
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Affiliation(s)
| | - Abhishek Kumar Mishra
- Department of Physics, Applied Science Cluster, University of Petroleum and Energy Studies, Dehradun, 248007, India
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Sharma R, Sehrawat R, Ahlawat S, Sharma V, Thakur MS, Mishra AK, Arora R, Tantia MS. Functional Quality Characteristics of the Meat from a Dual-Purpose Poultry Crossbreed Suitable for Backyard Rearing in Comparison to Commercial Broilers. Foods 2023; 12:2434. [PMID: 37444172 DOI: 10.3390/foods12132434] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/05/2023] [Accepted: 06/14/2023] [Indexed: 07/15/2023] Open
Abstract
Backyard poultry farming contributes to food security, nutrition, and the regular income of rural farmers in India. Their products have a niche market here and fetch higher prices than those of commercial poultry. Improved varieties are being developed to overcome the slow growth, late sexual maturity, and low production of indigenous breeds, while retaining their positive attributes. A comprehensive study was conducted to analyze the functional attributes of meat from the Jabalpur color (JBC), a colored, improved dual-purpose synthetic line, developed by Nanaji Deshmukh Veterinary Science University, Jabalpur, India. The birds were managed in a deep litter system under a backyard type of housing (night shelter and free range). Primal meat cuts (breast and thigh) of the male birds (n = 20/group) were evaluated at the age of marketing. The corresponding attributes were compared with the results obtained for commercial Cobb (400) broilers. The protein concentration of JBC breast (25.65 ± 0.39 g/100 g of tissue) and thigh (19.04 ± 0.23 g/100 g of tissue) meat was superior (p ≤ 0.05) to that of Cobb broilers. Established assays (in vitro) identified a better (p ≤ 0.05) antioxidation capacity in the JBC meat. High-performance liquid chromatography confirmed a considerable quantity of functional biomolecules (carnosine, anserine, and creatine) in the JBC breast and thigh meat extracts. The average carnosine concentration (mg/g of tissue) was 2.66 ± 0.09 and 1.11 ± 0.04 in the JBC breast and thigh meat, respectively. The mRNA expression was quantified by qRT-PCR for the carnosine-related genes: β-alanine transporter (SLC36A1), carnosine-synthesizing enzyme (CARNS1), and carnosine-degrading enzyme (CNDP2); this explained the comparable carnosine in the JBC and Cobb meat. Meat extracts from both genetic groups (JBC and Cobb) had high anti-glycation potential. Higher protein content and antioxidant capacity, along with the bioactive dipeptides in the JBC meat, herald exciting research opportunities for its use in improving the traditional backyard poultry farming system.
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Affiliation(s)
- Rekha Sharma
- ICAR-National Bureau of Animal Genetic Resources, Karnal 132 001, India
| | - Renuka Sehrawat
- ICAR-National Bureau of Animal Genetic Resources, Karnal 132 001, India
| | - Sonika Ahlawat
- ICAR-National Bureau of Animal Genetic Resources, Karnal 132 001, India
| | - Vivek Sharma
- ICAR-National Dairy Research Institute, Karnal 132 001, India
| | - Mohan Singh Thakur
- Department of Animal Genetics and Breeding, Nanaji Deshmukh Veterinary Science University, Jabalpur 482 001, India
| | - A K Mishra
- ICAR-National Bureau of Animal Genetic Resources, Karnal 132 001, India
| | - Reena Arora
- ICAR-National Bureau of Animal Genetic Resources, Karnal 132 001, India
| | - M S Tantia
- ICAR-National Bureau of Animal Genetic Resources, Karnal 132 001, India
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Gupta A, Mishra AK, Aggarwal N. Can low-grade chondrosarcoma in flat bones be treated with intralesional curettage and cryotherapy? J Surg Oncol 2023. [PMID: 37126008 DOI: 10.1002/jso.27282] [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] [Received: 03/27/2023] [Accepted: 04/01/2023] [Indexed: 05/02/2023]
Affiliation(s)
- Akshat Gupta
- Department of Orthopaedics, All India Institute of Medical Sciences, Rajkot, Gujarat, India
| | - Abhishek Kumar Mishra
- Department of Orthopaedics, All India Institute of Medical Sciences, Rajkot, Gujarat, India
| | - Nupur Aggarwal
- Department of Plastic Surgery, Yashoda Super Speciality Hospitals, Kaushambhi, Uttar Pradesh, India
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Mishra AK, Chauhan A, Kumar S, Kant R, Kumar R. Catalyst-Controlled Diastereoselective Synthesis of Bridged [3.3.1] Bis(Indolyl)-Oxanes and Oxepanes via Desymmetrization of Bis(Indolyl)-Cyclohexadienones. Org Lett 2023; 25:3034-3039. [PMID: 37092788 DOI: 10.1021/acs.orglett.3c00834] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
A catalyst-controlled divergent synthesis of bridged [3.3.1] bis(indolyl)-oxanes and cis-[6.7] fused bis(indolyl) oxepanes via diastereoselective desymmetrization of bis(indolyl)-cyclohexadienones is presented for the first time. The reaction is highly atom- and step-economic, furnishing sp3-rich functionalized bis(indolyl) derivatives in good to excellent yields with wide substrate scope. The reaction proceeds through Friedel-Crafts alkylation followed by catalyst-controlled selective C-C bond formation/rearrangement. Gram scale synthesis and synthetic utility to generate bis(indolyl) alkaloid-like molecular diversity were also illustrated.
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Affiliation(s)
- Abhishek Kumar Mishra
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, Uttar Pradesh India
| | - Anil Chauhan
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, Uttar Pradesh India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Santosh Kumar
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, Uttar Pradesh India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Ruchir Kant
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow 226031, Uttar Pradesh, India
| | - Ravindra Kumar
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, Uttar Pradesh India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
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Rastogi SK, Singh R, Kumar S, Mishra AK, Ahirwar MB, Deshmukh MM, Sinha AK, Kumar R. One-pot C-C, C-N, and C-S bond construction for synthesis of 3-sulfenylindoles directly from unactivated anilines involving dual palladium catalysis and mechanistic insights from DFT. Org Biomol Chem 2023; 21:838-845. [PMID: 36602157 DOI: 10.1039/d2ob01606k] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An efficient dual Pd-catalytic system was developed for one-pot synthesis of 3-sulfenylindoles via C-C, C-N and C-S bond construction directly from unactivated 2-iodo(NH)anilines under mild reaction conditions. Furthermore, 3-selenyl/halo/carbon-functionalized indoles were synthesized in good yields and a short reaction time. The synthetic utility of 3-sulfenylindole was also demonstrated. The key role of solvent in palladium catalysis was unravelled by DFT.
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Affiliation(s)
- Sumit K Rastogi
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, UP, India. .,Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, UP-201002, India
| | - Richa Singh
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, UP, India. .,Department of Chemistry, Gaya College, Gaya, Bihar-823001, India
| | - Santosh Kumar
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, UP, India. .,Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, UP-201002, India
| | - Abhishek Kumar Mishra
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, UP, India.
| | - Mini Bharati Ahirwar
- Department of Chemistry, Dr Harisingh Gour Vishwavidyalaya (A Central University), Sagar, India
| | - Milind M Deshmukh
- Department of Chemistry, Dr Harisingh Gour Vishwavidyalaya (A Central University), Sagar, India
| | - Arun K Sinha
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, UP, India. .,Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, UP-201002, India.,Ranchi University, Ranchi, Jharkhand-834001, India
| | - Ravindra Kumar
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, UP, India. .,Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, UP-201002, India
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Mishra AK, Sprecher SG. Eye Development in Drosophila : From Photoreceptor Specification to Terminal Differentiation. Neurogenetics 2023. [DOI: 10.1007/978-3-031-07793-7_6] [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: 12/13/2022]
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Swain DK, Sharma P, Shah N, Sethi M, Mahajan A, Gupta S, Mishra AK, Yadav S. Introduction to the pathways involved in the activation and regulation of sperm motility: A review of the relevance of ion channels. Anim Reprod Sci 2022; 246:107052. [PMID: 35987804 DOI: 10.1016/j.anireprosci.2022.107052] [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: 11/22/2021] [Revised: 07/29/2022] [Accepted: 08/04/2022] [Indexed: 12/14/2022]
Abstract
To participate in sperm-oocyte fusion, spermatozoa need to be motile. In the testes, spermatozoa are immotile, although these gametes acquire the capacity for motility during the transit through the epididymis. During the period of epididymal transport from the male genital tract to the female genital tract, spermatozoa exhibit various types of motility that are regulated by complex signalling and communication mechanisms. Because motility is very dynamic, it can be affected by small changes in the external or internal environment of spermatozoa within a very short time. This indicates that regulatory membrane proteins, known as sperm ion channels, are involved in the regulation of sperm motility. Research results from studies, where there was use of electrophysiological, pharmacological, molecular and knock-out approaches, indicate ion channels are possibly involved in the regulation of sperm membrane polarisation, intracellular pH, motility, energy homeostasis, membrane integrity, capacitation, hyperactivity, acrosome reaction and fertilisation processes. In this review, there is summarisation of the key functions that ion channels have in the regulation, initiation, maintenance, and modulation of sperm motility. In addition, in this review there is highlighting of novel insights about the pathways of ion channels that are activated in spermatozoa while these gametes are located in the oviduct leading to the fertilisation capacity of these cells.
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Affiliation(s)
- Dilip Kumar Swain
- Sperm Signaling Laboratory, Department of Veterinary Physiology, College of Veterinary Science & Animal Husbandry, U.P. Pandit Deendayal Upadhayaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura 281001, Uttar Pradesh, India.
| | - Pratishtha Sharma
- Sperm Signaling Laboratory, Department of Veterinary Physiology, College of Veterinary Science & Animal Husbandry, U.P. Pandit Deendayal Upadhayaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura 281001, Uttar Pradesh, India
| | - Nadeem Shah
- Department of Veterinary Gynaecology and Obstetrics, ICAR-National Dairy Research Institute, Karnal 132001, Haryana, India
| | - Manisha Sethi
- Department of Veterinary Gynaecology and Obstetrics, ICAR-National Dairy Research Institute, Karnal 132001, Haryana, India
| | - Abhishek Mahajan
- Sperm Signaling Laboratory, Department of Veterinary Physiology, College of Veterinary Science & Animal Husbandry, U.P. Pandit Deendayal Upadhayaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura 281001, Uttar Pradesh, India
| | - Shashikant Gupta
- Animal Reproduction Division, ICAR-Indian Veterinary Research Institute, Izzatnagar, Bareilly 243122, Uttar Pradesh, India
| | | | - Sarvajeet Yadav
- Sperm Signaling Laboratory, Department of Veterinary Physiology, College of Veterinary Science & Animal Husbandry, U.P. Pandit Deendayal Upadhayaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura 281001, Uttar Pradesh, India
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Lupan C, Mishra AK, Wolff N, Drewes J, Krüger H, Vahl A, Lupan O, Pauporté T, Viana B, Kienle L, Adelung R, de Leeuw NH, Hansen S. Nanosensors Based on a Single ZnO:Eu Nanowire for Hydrogen Gas Sensing. ACS Appl Mater Interfaces 2022; 14:41196-41207. [PMID: 36044354 PMCID: PMC9753046 DOI: 10.1021/acsami.2c10975] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 08/18/2022] [Indexed: 05/26/2023]
Abstract
Fast detection of hydrogen gas leakage or its release in different environments, especially in large electric vehicle batteries, is a major challenge for sensing applications. In this study, the morphological, structural, chemical, optical, and electronic characterizations of ZnO:Eu nanowire arrays are reported and discussed in detail. In particular, the influence of different Eu concentrations during electrochemical deposition was investigated together with the sensing properties and mechanism. Surprisingly, by using only 10 μM Eu ions during deposition, the value of the gas response increased by a factor of nearly 130 compared to an undoped ZnO nanowire and we found an H2 gas response of ∼7860 for a single ZnO:Eu nanowire device. Further, the synthesized nanowire sensors were tested with ultraviolet (UV) light and a range of test gases, showing a UV responsiveness of ∼12.8 and a good selectivity to 100 ppm H2 gas. A dual-mode nanosensor is shown to detect UV/H2 gas simultaneously for selective detection of H2 during UV irradiation and its effect on the sensing mechanism. The nanowire sensing approach here demonstrates the feasibility of using such small devices to detect hydrogen leaks in harsh, small-scale environments, for example, stacked battery packs in mobile applications. In addition, the results obtained are supported through density functional theory-based simulations, which highlight the importance of rare earth nanoparticles on the oxide surface for improved sensitivity and selectivity of gas sensors, even at room temperature, thereby allowing, for instance, lower power consumption and denser deployment.
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Affiliation(s)
- Cristian Lupan
- Center
for Nanotechnology and Nanosensors, Department of Microelectronics
and Biomedical Engineering, Faculty of Computers, Informatics and
Microelectronics, Technical University of
Moldova, 168 Stefan cel Mare str., MD-2004 Chisinau, Republic of Moldova
| | - Abhishek Kumar Mishra
- Department
of Physics, Applied Science Cluster, School of Engineering, University of Petroleum and Energy Studies (UPES),
Energy Acres Building, Bidholi, Dehradun, 248007 Uttrakhand, India
| | - Niklas Wolff
- Chair
for Synthesis and Real Structure, Faculty of Engineering, Department
of Materials Science, Kiel University, Kaiserstr. 2, D-24143 Kiel, Germany
| | - Jonas Drewes
- Chair
for Multicomponent Materials, Faculty of Engineering, Department of
Materials Science, Kiel University, Kaiserstr. 2, D-24143 Kiel, Germany
| | - Helge Krüger
- Functional
Nanomaterials, Faculty of Engineering, Department of Materials Science, Kiel University, Kaiserstr. 2, D-24143 Kiel, Germany
| | - Alexander Vahl
- Chair
for Multicomponent Materials, Faculty of Engineering, Department of
Materials Science, Kiel University, Kaiserstr. 2, D-24143 Kiel, Germany
| | - Oleg Lupan
- Center
for Nanotechnology and Nanosensors, Department of Microelectronics
and Biomedical Engineering, Faculty of Computers, Informatics and
Microelectronics, Technical University of
Moldova, 168 Stefan cel Mare str., MD-2004 Chisinau, Republic of Moldova
- Functional
Nanomaterials, Faculty of Engineering, Department of Materials Science, Kiel University, Kaiserstr. 2, D-24143 Kiel, Germany
- PSL Université,
Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris (IRCP), 11 rue P. et M. Curie, F, 75005 Paris, France
- Department
of Physics, University of Central Florida, Florida, Orlando, Florida 32816-2385, United States
| | - Thierry Pauporté
- PSL Université,
Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris (IRCP), 11 rue P. et M. Curie, F, 75005 Paris, France
| | - Bruno Viana
- PSL Université,
Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris (IRCP), 11 rue P. et M. Curie, F, 75005 Paris, France
| | - Lorenz Kienle
- Chair
for Synthesis and Real Structure, Faculty of Engineering, Department
of Materials Science, Kiel University, Kaiserstr. 2, D-24143 Kiel, Germany
| | - Rainer Adelung
- Functional
Nanomaterials, Faculty of Engineering, Department of Materials Science, Kiel University, Kaiserstr. 2, D-24143 Kiel, Germany
| | - Nora H de Leeuw
- School
of Chemistry, University of Leeds, Leeds LS2 9JT, United Kingdom
- Department
of Earth Sciences, Utrecht University, Princetonlaan 8a, 3584 CB Utrecht, The Netherlands
| | - Sandra Hansen
- Functional
Nanomaterials, Faculty of Engineering, Department of Materials Science, Kiel University, Kaiserstr. 2, D-24143 Kiel, Germany
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Yadav R, Srivastava A, Sharma R, Abraham JA, Dar SA, Mishra AK, Srivastava V. The study of optical and thermoelectric behaviour of thalium based flouropervoskite (TlSiF3) for photovoltaic and renewable energy applications by DFT. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lupan O, Santos-Carballal D, Magariu N, Mishra AK, Ababii N, Krüger H, Wolff N, Vahl A, Bodduluri MT, Kohlmann N, Kienle L, Adelung R, de Leeuw NH, Hansen S. Al 2O 3/ZnO Heterostructure-Based Sensors for Volatile Organic Compounds in Safety Applications. ACS Appl Mater Interfaces 2022; 14:29331-29344. [PMID: 35704838 DOI: 10.1021/acsami.2c03704] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Monitoring volatile organic compounds (VOCs) in harsh environments, especially for safety applications, is a growing field that requires specialized sensor structures. In this work, we demonstrate the sensing properties toward the most common VOCs of columnar Al2O3/ZnO heterolayer-based sensors. We have also developed an approach to tune the sensor selectivity by changing the thickness of the exposed amorphous Al2O3 layer from 5 to 18 nm. Columnar ZnO films are prepared by a chemical solution method, where the exposed surface is decorated with an Al2O3 nanolayer via thermal atomic layer deposition at 75 °C. We have investigated the structure and morphology as well as the vibrational, chemical, electronic, and sensor properties of the Al2O3/ZnO heterostructures. Transmission electron microscopy (TEM) studies show that the upper layers consist of amorphous Al2O3 films. The heterostructures showed selectivity to 2-propanol vapors only within the range of 12-15 nm thicknesses of Al2O3, with the highest response value of ∼2000% reported for a thickness of 15 nm at the optimal working temperature of 350 °C. Density functional theory (DFT) calculations of the Al2O3/ZnO(1010) interface and its interaction with 2-propanol (2-C3H7OH), n-butanol (n-C4H9OH), ethanol (C2H5OH), acetone (CH3COCH3), hydrogen (H2), and ammonia (NH3) show that the molecular affinity for the Al2O3/ZnO(1010) interface decreases from 2-propanol (2-C3H7OH) ≈ n-butanol (n-C4H9OH) > ethanol (C2H5OH) > acetone (CH3COCH3) > hydrogen (H2), which is consistent with our gas response experiments for the VOCs. Charge transfers between the surface and the adsorbates, and local densities of states of the interacting atoms, support the calculated strength of the molecular preferences. Our findings are highly important for the development of 2-propanol sensors and to our understanding of the effect of the heterojunction and the thickness of the top nanolayer on the gas response, which thus far have not been reported in the literature.
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Affiliation(s)
- Oleg Lupan
- Department of Materials Science, Chair for Functional Nanomaterials, Faculty of Engineering, Christian-Albrechts Universität zu Kiel, Kiel, Kaiserstraße 2, D-24143 Kiel, Germany
- Center for Nanotechnology and Nanosensors, Department of Microelectronics and Biomedical Engineering, Faculty of Computers, Informatics and Microelectronics, Technical University of Moldova, 168 Stefan cel Mare str., MD-2004 Chisinau, Republic of Moldova
- Department of Physics, University of Central Florida, Orlando, Florida 32816-2385, United States
| | | | - Nicolae Magariu
- Center for Nanotechnology and Nanosensors, Department of Microelectronics and Biomedical Engineering, Faculty of Computers, Informatics and Microelectronics, Technical University of Moldova, 168 Stefan cel Mare str., MD-2004 Chisinau, Republic of Moldova
| | - Abhishek Kumar Mishra
- Department of Physics, School of Engineering, University of Petroleum and Energy Studies (UPES), Energy Acres Building, Bidholi, Dehradun 248007, Uttrakhand, India
| | - Nicolai Ababii
- Center for Nanotechnology and Nanosensors, Department of Microelectronics and Biomedical Engineering, Faculty of Computers, Informatics and Microelectronics, Technical University of Moldova, 168 Stefan cel Mare str., MD-2004 Chisinau, Republic of Moldova
| | - Helge Krüger
- Department of Materials Science, Chair for Functional Nanomaterials, Faculty of Engineering, Christian-Albrechts Universität zu Kiel, Kiel, Kaiserstraße 2, D-24143 Kiel, Germany
| | - Niklas Wolff
- Department of Materials Science, Chair for Synthesis and Real Structure, Faculty of Engineering, Christian-Albrechts Universität zu Kiel, Kiel, Kaiserstraße 2, D-24143 Kiel, Germany
| | - Alexander Vahl
- Department of Materials Science, Chair for Multicomponent Materials, Faculty of Engineering, Christian-Albrechts Universität zu Kiel, Kiel, Kaiserstraße 2, D-24143 Kiel, Germany
| | - Mani Teja Bodduluri
- Fraunhofer Institute for Silicon Technology (ISIT), Itzehoe, Fraunhoferstraße 1, Itzehoe D-25524, Germany
| | - Niklas Kohlmann
- Department of Materials Science, Chair for Synthesis and Real Structure, Faculty of Engineering, Christian-Albrechts Universität zu Kiel, Kiel, Kaiserstraße 2, D-24143 Kiel, Germany
| | - Lorenz Kienle
- Department of Materials Science, Chair for Synthesis and Real Structure, Faculty of Engineering, Christian-Albrechts Universität zu Kiel, Kiel, Kaiserstraße 2, D-24143 Kiel, Germany
| | - Rainer Adelung
- Department of Materials Science, Chair for Functional Nanomaterials, Faculty of Engineering, Christian-Albrechts Universität zu Kiel, Kiel, Kaiserstraße 2, D-24143 Kiel, Germany
| | - Nora H de Leeuw
- School of Chemistry, University of Leeds, Leeds LS2 9JT, United Kingdom
- Department of Earth Sciences, Utrecht University, Princetonlaan 8a, 3584 CB Utrecht, The Netherlands
| | - Sandra Hansen
- Department of Materials Science, Chair for Functional Nanomaterials, Faculty of Engineering, Christian-Albrechts Universität zu Kiel, Kiel, Kaiserstraße 2, D-24143 Kiel, Germany
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Bhargava K, Gururaj K, Aseri GK, Nath G, Singh NP, Pawaiya RVS, Kumar A, Mishra AK, Yadav VB, Jain N. Bacteriophages: A possible solution to combat enteropathogenic Escherichia coli infections in neonatal goats. Lett Appl Microbiol 2022; 74:707-717. [PMID: 35060159 DOI: 10.1111/lam.13656] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/12/2022] [Accepted: 01/17/2022] [Indexed: 11/29/2022]
Abstract
Due to awareness and benefits of goat rearing in developing economies, goats' significance is increasing. Unfortunately, these ruminants are threatened via multiple bacterial pathogens such as Enteropathogenic Escherichia coli (EPEC). In goat kids and lambs, EPEC causes gastrointestinal disease leading to substantial economic losses for farmers and may also pose a threat to public health via the spread of zoonotic diseases. Management of infection is primarily based on antibiotics, but the need for new therapeutic measures as an alternative to antibiotics is becoming vital because of the advent of antimicrobial resistance (AMR). The prevalence of EPEC was established using bfpA gene, uspA gene, and Stx1 gene, followed by phylogenetic analysis using Stx1 gene. The lytic activity of the isolated putative coliphages was tested on multi-drug resistant strains of EPEC. It was observed that a PCR based approach is more effective and rapid as compared to phenotypic tests of Escherichia coli virulence. It was also established that the isolated bacteriophages exhibited potent antibacterial efficacy in-vitro, with some of the isolates (16%) detected as T4 and T4-like phages based on gp23 gene. Hence, bacteriophages as therapeutic agents may be explored as an alternative to antibiotics in managing public, livestock and environmental health in this era of AMR.
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Affiliation(s)
- Kanika Bhargava
- Amity Institute of Microbial Technology, Amity University Rajasthan, Jaipur (Rajasthan), 303 002, India.,Department of Microbiology, IMS, Banaras Hindu University, Varanasi, UP, 221005, India
| | - K Gururaj
- Division of Animal Health, CIRG, Mathura (UP), 281122, India
| | - G K Aseri
- Amity Institute of Microbial Technology, Amity University Rajasthan, Jaipur (Rajasthan), 303 002, India
| | - Gopal Nath
- Department of Microbiology, IMS, Banaras Hindu University, Varanasi, UP, 221005, India
| | | | - R V S Pawaiya
- Division of Animal Health, CIRG, Mathura (UP), 281122, India
| | - Ashok Kumar
- Division of Animal Health, CIRG, Mathura (UP), 281122, India
| | - A K Mishra
- Division of Animal Health, CIRG, Mathura (UP), 281122, India
| | | | - Neelam Jain
- Amity Institute of Biotechnology, Amity University Rajasthan, Jaipur (Rajasthan), 303 002, India
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18
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Duari S, Biswas S, Roy A, Maity S, Mishra AK, Souza AR, Elsharif AM, Morgon NH, Biswas S. Regioselective N‐Functionalization of Tautomerizable Heterocycles through Methyl Trifluoromethanesulfonate‐Catalyzed Substitution of Alcohols and Alkyl Group Migrations. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101196] [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: 11/06/2022]
Affiliation(s)
- Surajit Duari
- Department of Chemistry University of Calcutta 92, A. P. C. Road Kolkata 700 009 West Bengal India
| | - Subrata Biswas
- Department of Chemistry University of Calcutta 92, A. P. C. Road Kolkata 700 009 West Bengal India
| | - Arnab Roy
- Department of Chemistry University of Calcutta 92, A. P. C. Road Kolkata 700 009 West Bengal India
| | - Srabani Maity
- Department of Chemistry University of Calcutta 92, A. P. C. Road Kolkata 700 009 West Bengal India
| | - Abhishek Kumar Mishra
- Department of Medicinal and Process Chemistry CSIR-Central Drug Research Institute Lucknow 226031 U. P. India
| | - Aguinaldo R. Souza
- Department of Chemistry, School of Science São Paulo State University Bauru São Paulo Brazil 17033-360
| | - Asma M. Elsharif
- Department of Chemistry Imam Abdulrahman Bin Faisal University, P.O. Box 1982 Dammam 31441 Saudi Arabia
| | - Nelson H. Morgon
- Department of Physical Chemistry, Institute of Chemistry Campinas State University Campinas São Paulo Brazil 13083-970
| | - Srijit Biswas
- Department of Chemistry University of Calcutta 92, A. P. C. Road Kolkata 700 009 West Bengal India
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Guha Niyogi S, Kumar B, Puri GD, Negi S, Mishra AK, Thingnam SKS. Cardiac output monitoring using transthoracic echocardiography in children after cardiac surgery-an observational study of feasibility and concordance with transpulmonary thermodilution. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1516] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Transthoracic echocardiography (TTE) is commonly used after pediatric cardiac surgery to monitor cardiac function and adequacy of surgery; however it depends on the availability of good echo window and operator skill [1]. Transpulmonary thermodilution (TPTD) is feasible along with calibrated continuous cardiac output measurement in children but seldom used due to cost and the need for a specialized catheter [2].
We hypothesized that TTE would be as good as TPTD, but limited in feasibility following pediatric cardiac surgery. Hence, the concordance, agreement as well as feasibility and trending of cardiac output monitoring by TTE was compared against a reference TPTD method in real-world usage in children after congenital heart surgery.
Methods
This was a secondary analysis of data from a previously registered and conducted study in our unit. TPTD monitoring was instituted in children undergoing congenital heart disease repair on cardiopulmonary bypass with a 3F femoral arterial cannula and a central venous injectate temperature sensor.
Cardiac output was also measured by transthoracic echocardiography by measurement of the left ventricular outflow tract (LVOT) diameter, LVOT velocity time integral (VTI) and the heart rate as previously described [3,4]. Measurements were taken after arrival in the ICU, and every 12 hours till after extubation. Correlation, Bland-Altman analysis and polar analysis was done for cardiac output measured by TPTD and TTE.
Results
TTE and TPTD measurements of cardiac output correlated well (Pearson's correlation coefficient 0.94; 95% CI 0.90–0.96) (Fig. 1A). Bland Altman analysis showed a mean bias of 0.15 l/min and upper and lower limits of agreement of 0.81 and −0.51 l/min respectively (Fig. 1B). Cardiac output measurement by TTE was possible in 72 instances while TPTD allowed measurement in all 113 instances. Hence, TTE was not feasible in 41 instances across 14 patients, including 19 instances in acyanotic and 22 instances in cyanotic patients. Polar analysis revealed acceptable trending.
Conclusions
TTE derived cardiac output demonstrated good correlation, minimal bias and narrow limits of agreement versus TPTD, and was feasible in most cases. This suggests TTE is an acceptable cardiac output measurement modality post pediatric cardiac surgery, as in adults [5]. TPTD-based continuous cardiac output monitoring might have a complementary role in pediatric cardiac critical care, particularly in high risk cases.
Funding Acknowledgement
Type of funding sources: Public Institution(s). Main funding source(s): Institutional Special Research Grant from Postgraduate Institute of Medical Education and Research, Chandigarh, India. Figure 1
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Affiliation(s)
- S Guha Niyogi
- Postgraduate Institute of Medical Education and Research (PGIMER), Department of Anaesthesia and Intensive Care, Chandigarh, India
| | - B Kumar
- Postgraduate Institute of Medical Education and Research (PGIMER), Department of Anaesthesia and Intensive Care, Chandigarh, India
| | - G D Puri
- Postgraduate Institute of Medical Education and Research (PGIMER), Department of Anaesthesia and Intensive Care, Chandigarh, India
| | - S Negi
- Postgraduate Institute of Medical Education and Research (PGIMER), Department of Anaesthesia and Intensive Care, Chandigarh, India
| | - A K Mishra
- Postgraduate Institute of Medical Education and Research (PGIMER), Department of Cardiothoracic and Vascular Surgery, Chandigarh, India
| | - S K S Thingnam
- Postgraduate Institute of Medical Education and Research (PGIMER), Department of Cardiothoracic and Vascular Surgery, Chandigarh, India
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20
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Kumar NP, Kumar A, Panneer D, Abidha S, Muthukumaravel S, Sankari T, Ajithlal PM, Mathew J, Koothradan S, Paramasivan R, Muniyaraj M, Singh H, Saxena R, Vijayachari P, Sunish IP, Shriram AN, Dutta P, Patgiri SJ, Bhattacharyya DR, Hoti SL, Chattopadhyay D, Roy S, Mahapatra N, Pati S, Chand G, Mishra AK, Barde P, Jambulingam P. Nation-wide vector surveillance on Zika and Dengue did not indicate transmission of the American lineage-pandemic Zika virus in India. Int J Infect Dis 2021; 113:119-124. [PMID: 34601144 DOI: 10.1016/j.ijid.2021.09.074] [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: 06/04/2021] [Revised: 09/17/2021] [Accepted: 09/26/2021] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES Following the Public Health Emergency of International Concern declared on Zika by the World Health Organization during 2016, the Indian Council of Medical Research carried out nationwide vector surveillance for Zika and Dengue viruses (ZIKV and DENV) in India as a preparedness measure in 2016-19. METHODS High-risk zones distributed to 49 Districts in 14 states/union territories were included in the study. Seven ICMR institutions participated, following a standard operating protocol. Aedes specimens sampled weekly were processed by multiplex reverse transcriptase-polymerase chain reaction (RT-PCR) for ZIKV/DENV and random samples crosschecked with real-time RT-PCR for ZIKV. RESULTS Altogether, 79 492 Aedes specimens in 6492 pools were processed; 3 (0.05%) and 63 (0.97%) pools, respectively, were found positive for ZIKV and DENV. ZIKV infections were recorded in Aedes aegypti sampled during the 2018 sporadic Zika outbreak in Jaipur, Rajasthan. However, these belonged to the Asian lineage of the virus, already circulating in the country. Both Ae. aegypti and Aedes albopictus distributed to 8 states/union territories were found to be infected with DENV. Both sexes of Ae. albopictus were infected, indicating transovarial transmission. CONCLUSION This investigation evinced no active transmission of the American lineage-pandemic Zika virus in India during the pandemic period.
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Affiliation(s)
- N Pradeep Kumar
- ICMR-Vector Control Research Centre Field Station, Kottayam, Kerala, India.
| | - Ashwani Kumar
- ICMR-Vector Control Research Centre, Puducherry, India
| | - D Panneer
- ICMR-Vector Control Research Centre, Puducherry, India
| | - S Abidha
- ICMR-Vector Control Research Centre Field Station, Kottayam, Kerala, India
| | | | - T Sankari
- ICMR-Vector Control Research Centre, Puducherry, India
| | - P M Ajithlal
- ICMR-Vector Control Research Centre Field Station, Kottayam, Kerala, India
| | - Jessu Mathew
- ICMR-Vector Control Research Centre Field Station, Kottayam, Kerala, India
| | - Suhana Koothradan
- ICMR-Vector Control Research Centre Field Station, Kottayam, Kerala, India
| | - R Paramasivan
- ICMR-Vector Control Research Centre Field Station, Madurai, Tamil Nadu, India
| | - M Muniyaraj
- ICMR-Vector Control Research Centre Field Station, Madurai, Tamil Nadu, India
| | - Himmat Singh
- ICMR- National Institute for Malaria Research, New Delhi, India
| | - Rekha Saxena
- ICMR- National Institute for Malaria Research, New Delhi, India
| | - P Vijayachari
- ICMR- Regional Medical Research Centre, Port Blair, Andaman Nicobar Islands, India
| | - I P Sunish
- ICMR- Regional Medical Research Centre, Port Blair, Andaman Nicobar Islands, India
| | - A N Shriram
- ICMR-Vector Control Research Centre, Puducherry, India
| | - Prafulla Dutta
- ICMR-Regional Medical Research Centre (NE), Dibrugarh, Assam, India
| | | | | | - S L Hoti
- ICMR-National Institute of Medicinal Plants Research, Belagavi, Karnataka, India
| | - D Chattopadhyay
- ICMR-National Institute of Medicinal Plants Research, Belagavi, Karnataka, India
| | - Subarna Roy
- ICMR-National Institute of Medicinal Plants Research, Belagavi, Karnataka, India
| | - Namita Mahapatra
- ICMR- Regional Medical Research Centre, Bhubaneswar, Odisha, India
| | - Sanghamitra Pati
- ICMR- Regional Medical Research Centre, Bhubaneswar, Odisha, India
| | - Gyan Chand
- ICMR- National Institute of Research in Tribal Health, Jabalpur, Madhya Pradesh, India
| | - A K Mishra
- ICMR- National Institute of Research in Tribal Health, Jabalpur, Madhya Pradesh, India
| | - Pradip Barde
- ICMR- National Institute of Research in Tribal Health, Jabalpur, Madhya Pradesh, India
| | - P Jambulingam
- ICMR-Vector Control Research Centre, Puducherry, India
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Mishra AK, Fritsch C, Voutev R, Mann RS, Sprecher SG. Homothorax controls a binary Rhodopsin switch in Drosophila ocelli. PLoS Genet 2021; 17:e1009460. [PMID: 34314427 PMCID: PMC8345863 DOI: 10.1371/journal.pgen.1009460] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 08/06/2021] [Accepted: 07/02/2021] [Indexed: 11/26/2022] Open
Abstract
Visual perception of the environment is mediated by specialized photoreceptor (PR) neurons of the eye. Each PR expresses photosensitive opsins, which are activated by a particular wavelength of light. In most insects, the visual system comprises a pair of compound eyes that are mainly associated with motion, color or polarized light detection, and a triplet of ocelli that are thought to be critical during flight to detect horizon and movements. It is widely believed that the evolutionary diversification of compound eye and ocelli in insects occurred from an ancestral visual organ around 500 million years ago. Concurrently, opsin genes were also duplicated to provide distinct spectral sensitivities to different PRs of compound eye and ocelli. In the fruit fly Drosophila melanogaster, Rhodopsin1 (Rh1) and Rh2 are closely related opsins that originated from the duplication of a single ancestral gene. However, in the visual organs, Rh2 is uniquely expressed in ocelli whereas Rh1 is uniquely expressed in outer PRs of the compound eye. It is currently unknown how this differential expression of Rh1 and Rh2 in the two visual organs is controlled to provide unique spectral sensitivities to ocelli and compound eyes. Here, we show that Homothorax (Hth) is expressed in ocelli and confers proper rhodopsin expression. We find that Hth controls a binary Rhodopsin switch in ocelli to promote Rh2 expression and repress Rh1 expression. Genetic and molecular analysis of rh1 and rh2 supports that Hth acts through their promoters to regulate Rhodopsin expression in the ocelli. Finally, we also show that when ectopically expressed in the retina, hth is sufficient to induce Rh2 expression only at the outer PRs in a cell autonomous manner. We therefore propose that the diversification of rhodpsins in the ocelli and retinal outer PRs occurred by duplication of an ancestral gene, which is under the control of Homothorax. Sensory perception of light is mediated by specialized photoreceptor neurons of the eye. Each photoreceptor expresses unique photopigments called opsins and they are sensitive to particular wavelengths of light. In insects, ocelli and compound eyes are the main photosensory organs and they express different opsins. It is believed that opsins were duplicated during evolution to provide specificity to ocelli and the compound eye and this is corelated with their distinct functions. We show that Homothorax acts to control a binary Rhodopsin switch in the fruit fly Drosophila melanogaster to promote Rhodopsin 2 expression and represses Rhodopsin 1 expression in the ocelli. Genetic and molecular analysis showed that Homothorax acts through the promoters of rhosopsin 1 and rhosopsin 2 and controls their expression in the ocelli. We also show that Hth binding sites in the promoter region of rhodopsin 1 and rhodopsin 2 are conserved between different Drosophila species. We therefore proposed that Hth may have acted as a critical determinant during evolution which was required to provide specificity to the ocelli and compound eye by regulating a binary Rhodopsin switch in the ocelli.
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Affiliation(s)
- Abhishek Kumar Mishra
- Institute of Cell and Developmental Biology, Department of Biology, University of Fribourg, Fribourg, Switzerland
- * E-mail: (AKM); (SGS)
| | - Cornelia Fritsch
- Institute of Cell and Developmental Biology, Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Roumen Voutev
- Department of Biochemistry and Molecular Biophysics and Neuroscience, Mortimer B. Zukerman Mind Brain Behavior Institute, Columbia University, New York, United States of America
| | - Richard S. Mann
- Department of Biochemistry and Molecular Biophysics and Neuroscience, Mortimer B. Zukerman Mind Brain Behavior Institute, Columbia University, New York, United States of America
| | - Simon G. Sprecher
- Institute of Cell and Developmental Biology, Department of Biology, University of Fribourg, Fribourg, Switzerland
- * E-mail: (AKM); (SGS)
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Lupan O, Magariu N, Khaledialidusti R, Mishra AK, Hansen S, Krüger H, Postica V, Heinrich H, Viana B, Ono LK, Cuenya BR, Chow L, Adelung R, Pauporté T. Comparison of Thermal Annealing versus Hydrothermal Treatment Effects on the Detection Performances of ZnO Nanowires. ACS Appl Mater Interfaces 2021; 13:10537-10552. [PMID: 33600155 DOI: 10.1021/acsami.0c19170] [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] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A comparative investigation of the post-electroplating treatment influence on the gas detecting performances of single ZnO nanorod/nanowire (NR/NW), as grown by electrochemical deposition (ECD) and integrated into nanosensor devices, is presented. In this work, hydrothermal treatment (HT) in a H2O steam and conventional thermal annealing (CTA) in a furnace at 150 °C in ambient were used as post-growth treatments to improve the material properties. Herein, the morphological, optical, chemical, structural, vibrational, and gas sensing performances of the as-electrodeposited and treated specimens are investigated and presented in detail. By varying the growth temperature and type of post-growth treatment, the morphology is maintained, whereas the optical and structural properties show increased sample crystallization. It is shown that HT in H2O vapors affects the optical and vibrational properties of the material. After investigation of nanodevices based on single ZnO NR/NWs, it was observed that higher temperature during the synthesis results in a higher gas response to H2 gas within the investigated operating temperature range from 25 to 150 °C. CTA and HT or autoclave treatment showed the capability of a further increase in gas response of the prepared sensors by a factor of ∼8. Density functional theory calculations reveal structural and electronic band changes in ZnO surfaces as a result of strong interaction with H2 gas molecules. Our results demonstrate that high-performance devices can be obtained with high-crystallinity NWs/NRs after HT. The obtained devices could be the key element for flexible nanoelectronics and wearable electronics and have attracted great interest due to their unique specifications.
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Affiliation(s)
- Oleg Lupan
- PSL Université, Chimie ParisTech, Institut de Recherche de Chimie Paris-IRCP, CNRS UMR8247, Rue Pierre et Marie Curie 11, 75005 Paris, France
- Functional Nanomaterials, Institute for Materials Science, Faculty of Engineering, Kiel University, Street Kaiserstraße 2, D-24143 Kiel, Germany
- Center for Nanotechnology and Nanosensors, Department of Microelectronics and Biomedical Engineering, Technical University of Moldova, Stefan Cel Mare Av. 168, MD 2004 Chisinau, Republic of Moldova
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Nicolae Magariu
- Center for Nanotechnology and Nanosensors, Department of Microelectronics and Biomedical Engineering, Technical University of Moldova, Stefan Cel Mare Av. 168, MD 2004 Chisinau, Republic of Moldova
| | - Rasoul Khaledialidusti
- Department of Mechanical and Industrial Engineering at Norwegian University of Science & Technology, 74911 Trondheim, Norway
| | - Abhishek Kumar Mishra
- Department of Physics,, School of Engineering, University of Petroleum and Energy Studies, Bidholi Via Premnagar, 248007 Dehradun, India
| | - Sandra Hansen
- Functional Nanomaterials, Institute for Materials Science, Faculty of Engineering, Kiel University, Street Kaiserstraße 2, D-24143 Kiel, Germany
| | - Helge Krüger
- Functional Nanomaterials, Institute for Materials Science, Faculty of Engineering, Kiel University, Street Kaiserstraße 2, D-24143 Kiel, Germany
| | - Vasile Postica
- Center for Nanotechnology and Nanosensors, Department of Microelectronics and Biomedical Engineering, Technical University of Moldova, Stefan Cel Mare Av. 168, MD 2004 Chisinau, Republic of Moldova
| | - Helge Heinrich
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
- Department of Materials Science & Engineering, University of Virginia, 395 McCormick-Road Charlottesville, Virginia 229044, United States
| | - Bruno Viana
- PSL Université, Chimie ParisTech, Institut de Recherche de Chimie Paris-IRCP, CNRS UMR8247, Rue Pierre et Marie Curie 11, 75005 Paris, France
| | - Luis Katsuya Ono
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Beatriz Roldan Cuenya
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
- Department of Interface Science, University of Fritz Haber Institute of the Max Planck Society, 14195 Berlin, Germany
| | - Lee Chow
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Rainer Adelung
- Functional Nanomaterials, Institute for Materials Science, Faculty of Engineering, Kiel University, Street Kaiserstraße 2, D-24143 Kiel, Germany
| | - Thierry Pauporté
- PSL Université, Chimie ParisTech, Institut de Recherche de Chimie Paris-IRCP, CNRS UMR8247, Rue Pierre et Marie Curie 11, 75005 Paris, France
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Affiliation(s)
- A K Mishra
- Department of Internal Medicine, Saint Vincent Hospital, 123 Summer Street, Worcester, MA, 01608, USA
| | - A Lahiri
- Department of Cardiology, Flinders Medical Centre, Bedford Park, South Australia, Australia
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Mishra AK, Sinha B, Kumar R, Barth M, Hakkim H, Kumar V, Kumar A, Datta S, Guenther A, Sinha V. Cropland trees need to be included for accurate model simulations of land-atmosphere heat fluxes, temperature, boundary layer height, and ozone. Sci Total Environ 2021; 751:141728. [PMID: 32890797 DOI: 10.1016/j.scitotenv.2020.141728] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 08/07/2020] [Accepted: 08/14/2020] [Indexed: 06/11/2023]
Abstract
Trees significantly impact land-atmosphere feedbacks through evapotranspiration, photosynthesis and isoprene emissions. These processes influence the local microclimate, air quality and can mitigate temperature extremes and sequester carbon dioxide. Despite such importance, currently only 5 out of 15 atmospheric chemistry climate models even partially account for the presence of cropland trees. We first show that the tree cover over intensely farmed regions in Asia, Australia and South America is significantly underestimated (e.g. only 1-3% tree cover over north-India) in the Model of Emissions of Gases and Aerosol from Nature (MEGAN) and absent in Noah land-surface module of the Weather Research and Forecasting (WRF-Chem) Model. By including the actual tree cover (~10%) over the north-west Indo Gangetic Plain in the Noah land-surface module of the WRF-Chem and the MEGAN module, during the rice growing monsoon season in August, we find that the latent heat flux alone increases by 100%-300% while sensible heat flux reduces by 50%-100%, leading to a reduction in daytime boundary layer height by 200-400 m. This greatly improves agreement between the modelled and measured temperature, boundary layer height and surface ozone, which were earlier overestimated and isoprene and its oxidation products which were earlier underestimated. Mitigating peak daytime temperatures and ozone improves rice production by 10 to 20%. Our findings from north west Indo-Gangetic Plain establish that such plantations mitigate heat stress, and have beneficial effects on crop yields while also sequestering carbon. Expanding agroforestry practices to 50% of the cropland area could result in up to 40% yield gain regionally. Implementing such strategies globally could increase crop production and sequester 0.3-30 GtC per year, and therefore future climate mitigation and food security efforts should consider stakeholder participation for increased cropland agroforestry in view of its beneficial effects.
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Affiliation(s)
- A K Mishra
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S.A.S Nagar, Manauli PO, Punjab 140306, India
| | - B Sinha
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S.A.S Nagar, Manauli PO, Punjab 140306, India
| | - R Kumar
- National Center for Atmospheric Research, Boulder, CO, USA
| | - M Barth
- National Center for Atmospheric Research, Boulder, CO, USA
| | - H Hakkim
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S.A.S Nagar, Manauli PO, Punjab 140306, India
| | - V Kumar
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S.A.S Nagar, Manauli PO, Punjab 140306, India
| | - A Kumar
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S.A.S Nagar, Manauli PO, Punjab 140306, India
| | - S Datta
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S.A.S Nagar, Manauli PO, Punjab 140306, India
| | | | - V Sinha
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S.A.S Nagar, Manauli PO, Punjab 140306, India.
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Mishra AK, Cabaço S, de Los Santos CB, Apostolaki ET, Vizzini S, Santos R. Long-term effects of elevated CO 2 on the population dynamics of the seagrass Cymodocea nodosa: Evidence from volcanic seeps. Mar Pollut Bull 2021; 162:111824. [PMID: 33162054 DOI: 10.1016/j.marpolbul.2020.111824] [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] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/25/2020] [Accepted: 10/30/2020] [Indexed: 06/11/2023]
Abstract
Population reconstruction techniques was used to assess for the first time the population dynamics of a seagrass, Cymodocea nodosa, exposed to long-term elevated CO2 near three volcanic seeps and compared them with reference sites away from the seeps. Under high CO2, the density of shoots and of individuals (apical shoots), and the vertical and horizontal elongation and production rates, were higher than at the reference sites. Nitrogen limitation effects on rhizome elongation and production rates and on biomass were more evident than CO2 as these were highest at the location where the limitation of nitrogen was highest. At the seep where the availability of CO2 was highest and nitrogen lowest, density of shoots and individuals were highest, probably due to CO2 effects on shoot differentiation and induced reproductive output, respectively. At the three seeps, there was higher short- and long-term shoot recruitment than at the reference sites, and growth rates was around zero, indicating that elevated CO2 increases the turnover of C. nodosa shoots.
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Affiliation(s)
- A K Mishra
- Marine Plant Ecology Research Group (ALGAE), Centre of Marine Sciences (CCMAR), University of Algarve, Faro 8005-139, Portugal; School of Biological and Marine Sciences, Faculty of Science and Engineering, University of Plymouth, Portland Square, Drake Circus, Plymouth PL48LA, UK.
| | - S Cabaço
- Marine Plant Ecology Research Group (ALGAE), Centre of Marine Sciences (CCMAR), University of Algarve, Faro 8005-139, Portugal
| | - C B de Los Santos
- Marine Plant Ecology Research Group (ALGAE), Centre of Marine Sciences (CCMAR), University of Algarve, Faro 8005-139, Portugal
| | - E T Apostolaki
- Institute of Oceanography, Hellenic Center for Marine Research (HCMR), PO Box 2214, 71003 Heraklion-Crete, Greece
| | - S Vizzini
- Department of Earth and Marine Sciences, University of Palermo, via Archirafi 18, 90123 Palermo, Italy; CoNISMa, Piazzale Flaminio 9, 00196 Roma, Italy
| | - R Santos
- Marine Plant Ecology Research Group (ALGAE), Centre of Marine Sciences (CCMAR), University of Algarve, Faro 8005-139, Portugal
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Nath BJ, Mishra AK, Sarma HK. Assessment of quorum sensing effects of tyrosol on fermentative performance by chief ethnic fermentative yeasts from northeast India. J Appl Microbiol 2020; 131:728-742. [PMID: 33103297 DOI: 10.1111/jam.14908] [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: 07/21/2020] [Revised: 09/28/2020] [Accepted: 10/21/2020] [Indexed: 11/29/2022]
Abstract
AIM Tyrosol, a quorum sensing molecule in yeasts, was reported to reduce lag phase and induces hyphae formation during cell proliferation. However, evidence of any enhancing effect of tyrosol in cellular proliferation within fermentative environment is unclear. In this investigation, selected yeast cells were assessed for their ability to synthesize tyrosol followed by examining the role of the molecule during fermentation. METHODS AND RESULTS Tyrosols were characterized in four fermentative yeasts viz., Saccharomyces cerevisiae, Wickerhamomyces anomalus, Candida glabrata and Candida tropicalis isolated from traditional fermentative cakes of northeast India. All the isolates synthesized tyrosol while C. tropicalis exhibited filamentous growth in response to tyrosols retrieved from other isolates. Purified tyrosols showed protective behaviour in C. tropicalis and S. cerevisiae under ethanol mediated oxidative stress. During fermentation, tyrosol significantly enhanced growth of W. anomalus in starch medium while C. tropicalis exhibited growth enhancement in starch and glucose sources. The chief fermentative yeast S. cerevisiae showed notable enhancement in fermentative capacity in starch medium under the influence of tyrosol con-commitment of ethanol production. CONCLUSION The study concludes that tyrosol exerts unusual effect in cellular growth and fermentative ability of both Saccharomyces and non-Saccharomyces yeasts. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first report of expression of tyrosol by non-conventional yeasts, where the molecule was found to exert enhancing effect during fermentation, thereby augmenting the process of metabolite production during traditional fermentation.
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Affiliation(s)
- B J Nath
- Microbial Communication and Fungal Biology Group, Department of Biotechnology, Gauhati University, Guwahati, Assam, India
| | - A K Mishra
- Laboratory of Microbial Genetics, Department of Botany, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - H K Sarma
- Microbial Communication and Fungal Biology Group, Department of Biotechnology, Gauhati University, Guwahati, Assam, India
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Mishra AK, Sinha V. Emission drivers and variability of ambient isoprene, formaldehyde and acetaldehyde in north-west India during monsoon season. Environ Pollut 2020; 267:115538. [PMID: 33254592 DOI: 10.1016/j.envpol.2020.115538] [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] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 08/13/2020] [Accepted: 08/25/2020] [Indexed: 06/12/2023]
Abstract
Isoprene, formaldehyde and acetaldehyde are important reactive organic compounds which strongly impact atmospheric oxidation processes and formation of tropospheric ozone. Monsoon meteorology and the topography of Himalayan foothills cause surface emissions to get rapidly transported both horizontally and vertically, thereby influencing atmospheric processes in distant regions. Further in monsoon, Indo-Gangetic Plain is a major rice growing region of the world and daytime hourly ozone can frequently exceed phytotoxic dose of 40 ppb O3. However, the sources and ambient variability of these compounds which are potent ozone precursors are unknown. Here, we investigate the sources and photochemical processes driving their emission/formation during monsoon season from a sub-urban site at the foothills of the Himalayas. The measurements were performed in July, August and September using a high sensitivity mass spectrometer. Average ambient mixing ratios (±1σ variability) of isoprene, formaldehyde, acetaldehyde, and the sum of methyl vinyl ketone and methacrolein (MVK+MACR), were 1.4 ± 0.3 ppb, 5.7 ± 0.9 ppb, 4.5 ± 2.0 ppb, 0.75 ± 0.3 ppb, respectively, and much higher than summertime values in May. For isoprene these values were comparable to mixing ratios observed over tropical forests. Surprisingly, despite occurrence of anthropogenic emissions, biogenic emissions were found to be the major source of isoprene with peak daytime isoprene driven by temperature (r ≥ 0.8) and solar radiation. Photo-oxidation of precursor hydrocarbons were the main sources of acetaldehyde, formaldehyde and MVK+MACR. Ambient mixing ratios of all the compounds correlated poorly with acetonitrile (r ≤ 0.2), a chemical tracer for biomass burning suggesting negligible influence of biomass burning during monsoon season. Our results suggest that during monsoon season when radiation and rain are no longer limiting factors and convective activity causes surface emissions to be transported to upper atmosphere, biogenic emissions can significantly impact the remote upper atmosphere, climate and ozone affecting rice yields.
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Affiliation(s)
- A K Mishra
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - V Sinha
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India.
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Murugan L, Krishnan N, Venkataravanappa V, Saha S, Mishra AK, Sharma BK, Rai AB. Molecular characterization and race identification of Fusarium oxysporum f. sp. lycopersici infecting tomato in India. 3 Biotech 2020; 10:486. [PMID: 33123453 DOI: 10.1007/s13205-020-02475-z] [Citation(s) in RCA: 6] [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: 01/03/2020] [Accepted: 10/12/2020] [Indexed: 11/29/2022] Open
Abstract
Fourteen isolates of Fusarium were isolated from wilt affected tomato samples collected from 10 different states of India. Characterization of the fungal cultures based on morphology and sequencing of ITS rDNA revealed that they belonged to Fusarium oxysporum f.sp. lycopersici (Fol). Pathogenicity assay on two susceptible tomato cultivars showed all the 14 isolates were pathogenic and categorized in high-, moderate- and low-virulent groups. Differential host assay on Bonny Best (no resistant gene), UC82-L (harboring I-1), Fla.MH1 (harboring I-1 and I-2) and I3R-1 (harboring I-1, I-2 and I-3) tomato genotypes and PCR amplification with race-specific primers indicated that all the Fusarium isolates infecting tomato in India were belonging to race 1. Molecular diversity analysis based on ISSR markers revealed the presence of 3 distinct groups of Fol isolates. Abundant diversity was observed among the Fol isolates in harboring the virulence-related genes (endo-polygalacturonase gene pg1 and tomatinases) and toxin production (fumonisin). However, presence of pg1 does not correlate with virulence and the isolates carrying tomatinase 4 (tom-4) in combination with other tomatinase genes were of virulent group. Detection of fumonisin gene in six isolates of Fusarium infecting tomato indicated their toxigenic nature.
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Affiliation(s)
- Loganathan Murugan
- Division of Crop Protection, ICAR-Indian Institute of Vegetable Research, Uttar Pradesh, Varanasi, 221305 India
- Present Address: Division of Crop Protection, ICAR-National Research Centre for Banana, Tamil Nadu, Tiruchirappalli, India
| | - Nagendran Krishnan
- Division of Crop Protection, ICAR-Indian Institute of Vegetable Research, Uttar Pradesh, Varanasi, 221305 India
| | - V Venkataravanappa
- Division of Crop Protection, ICAR-Indian Institute of Vegetable Research, Uttar Pradesh, Varanasi, 221305 India
- Present Address: CHES, Chettalli, ICAR-Indian Institute of Horticultural Research, Hessaraghatta Lake PO, Bangalore, India
| | - S Saha
- Division of Crop Protection, ICAR-Indian Institute of Vegetable Research, Uttar Pradesh, Varanasi, 221305 India
- Present Address: Division of Crop Protection, ICAR-National Research Centre for Grapes, Pune, Maharashtra India
| | - A K Mishra
- Division of Crop Protection, ICAR-Indian Institute of Vegetable Research, Uttar Pradesh, Varanasi, 221305 India
| | - B K Sharma
- Division of Crop Protection, ICAR-Indian Institute of Vegetable Research, Uttar Pradesh, Varanasi, 221305 India
| | - A B Rai
- Division of Crop Protection, ICAR-Indian Institute of Vegetable Research, Uttar Pradesh, Varanasi, 221305 India
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Affiliation(s)
- K K Sahu
- Department of Internal Medicine, Saint Vincent Hospital, MD Medicine, 123 Summer Street, Worcester, MA 01608, USA
| | - A K Mishra
- Department of Internal Medicine, Saint Vincent Hospital, MD Medicine, 123 Summer Street, Worcester, MA 01608, USA
| | - R Patel
- Department of Internal Medicine, Saint Vincent Hospital, MD Medicine, 123 Summer Street, Worcester, MA 01608, USA
| | - N Suramaethakul
- Department of Internal Medicine, Saint Vincent Hospital, MD Medicine, 123 Summer Street, Worcester, MA 01608, USA
| | - G Abraham
- Department of Internal Medicine, Saint Vincent Hospital, MD Medicine, 123 Summer Street, Worcester, MA 01608, USA
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Pandey CB, Kumar U, Kaviraj M, Minick KJ, Mishra AK, Singh JS. DNRA: A short-circuit in biological N-cycling to conserve nitrogen in terrestrial ecosystems. Sci Total Environ 2020; 738:139710. [PMID: 32544704 DOI: 10.1016/j.scitotenv.2020.139710] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [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: 02/28/2020] [Revised: 05/21/2020] [Accepted: 05/23/2020] [Indexed: 06/11/2023]
Abstract
This paper reviews dissimilatory nitrate reduction to ammonium (DNRA) in soils - a newly appreciated pathway of nitrogen (N) cycling in the terrestrial ecosystems. The reduction of NO3- occurs in two steps; in the first step, NO3- is reduced to NO2-; and in the second, unlike denitrification, NO2- is reduced to NH4+ without intermediates. There are two sets of NO3-/NO2- reductase enzymes, i.e., Nap/Nrf and Nar/Nir; the former occurs on the periplasmic-membrane and energy conservation is respiratory via electron-transport-chain, whereas the latter is cytoplasmic and energy conservation is both respiratory and fermentative (Nir, substrate-phosphorylation). Since, Nir catalyzes both assimilatory- and dissimilatory-nitrate reduction, the nrfA gene, which transcribes the NrfA protein, is treated as a molecular-marker of DNRA; and a high nrfA/nosZ (N2O-reductase) ratio favours DNRA. Recently, several crystal structures of NrfA have been presumed to producee N2O as a byproduct of DNRA via the NO (nitric-oxide) pathway. Meta-analyses of about 200 publications have revealed that DNRA is regulated by oxidation state of soils and sediments, carbon (C)/N and NO2-/NO3- ratio, and concentrations of ferrous iron (Fe2+) and sulfide (S2-). Under low-redox conditions, a high C/NO3- ratio selects for DNRA while a low ratio selects for denitrification. When the proportion of both C and NO3- are equal, the NO2-/NO3- ratio modulates partitioning of NO3-, and a high NO2-/NO3- ratio favours DNRA. A high S2-/NO3- ratio also promotes DNRA in coastal-ecosystems and saline sediments. Soil pH, temperature, and fine soil particles are other factors known to influence DNRA. Since, DNRA reduces NO3- to NH4+, it is essential for protecting NO3- from leaching and gaseous (N2O) losses and enriches soils with readily available NH4+-N to primary producers and heterotrophic microorganisms. Therefore, DNRA may be treated as a tool to reduce ground-water NO3- pollution, enhance soil health and improve environmental quality.
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Affiliation(s)
- C B Pandey
- ICAR-Central Arid Zone Research Institute, Jodhpur 342003, Rajasthan, India.
| | - Upendra Kumar
- ICAR-National Rice Research Institute, Cuttack 753006, Odisha, India.
| | - Megha Kaviraj
- ICAR-National Rice Research Institute, Cuttack 753006, Odisha, India
| | - K J Minick
- Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27695, USA
| | - A K Mishra
- International Rice Research Institute, New Delhi 110012, India
| | - J S Singh
- Ecosystem Analysis Lab, Centre of Advanced Study in Botany, Banaras Hindu University (BHU), Varanasi 221005, India
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Affiliation(s)
- A K Mishra
- Internal Medicine, St. Vincent Hospital, 123 Summer Street, Worcester, MA, USA
| | - K K Sahu
- Internal Medicine, St. Vincent Hospital, 123 Summer Street, Worcester, MA, USA
| | - S Nagabandi
- Department of Cardiology, St. Vincent Hospital, 123 Summer Street, Worcester, MA, USA
| | - J Benotti
- Department of Cardiology, St. Vincent Hospital, 123 Summer Street, Worcester, MA, USA
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Lupan O, Ababii N, Mishra AK, Gronenberg O, Vahl A, Schürmann U, Duppel V, Krüger H, Chow L, Kienle L, Faupel F, Adelung R, de Leeuw NH, Hansen S. Single CuO/Cu 2O/Cu Microwire Covered by a Nanowire Network as a Gas Sensor for the Detection of Battery Hazards. ACS Appl Mater Interfaces 2020; 12:42248-42263. [PMID: 32813500 DOI: 10.1021/acsami.0c09879] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this study, a strategy to prepare CuO/Cu2O/Cu microwires that are fully covered by a nanowire (NW) network using a simple thermal-oxidation process is developed. The CuO/Cu2O/Cu microwires are fixed on Au/Cr pads with Cu microparticles. After thermal annealing at 425 °C, these CuO/Cu2O/Cu microwires are used as room-temperature 2-propanol sensors. These sensors show different dominating gas responses with operating temperatures, e.g., higher sensitivity to ethanol at 175 °C, higher sensitivity to 2-propanol at room temperature and 225 °C, and higher sensitivity to hydrogen gas at ∼300 °C. In this context, we propose the sensing mechanism of this three-in-one sensor based on CuO/Cu2O/Cu. X-ray diffraction (XRD) studies reveal that the annealing time during oxidation affects the chemical appearance of the sensor, while the intensity of reflections proves that for samples oxidized at 425 °C for 1 h the dominating phase is Cu2O, whereas upon further increasing the annealing duration up to 5 h, the CuO phase becomes dominant. The crystal structures of the Cu2O-shell/Cu-core and the CuO NW networks on the surface were confirmed with a transmission electron microscope (TEM), high-resolution TEM (HRTEM), and selected area electron diffraction (SAED), where (HR)TEM micrographs reveal the monoclinic CuO phase. Density functional theory (DFT) calculations bring valuable inputs to the interactions of the different gas molecules with the most stable top surface of CuO, revealing strong binding, electronic band-gap changes, and charge transfer due to the gas molecule interactions with the top surface. This research shows the importance of the nonplanar CuO/Cu2O layered heterostructure as a bright nanomaterial for the detection of various gases, controlled by the working temperature, and the insight presented here will be of significant value in the fabrication of new p-type sensing devices through simple nanotechnology.
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Affiliation(s)
- Oleg Lupan
- Functional Nanomaterials, Faculty of Engineering, Institute for Materials Science, Kiel University, Kaiser Str. 2, D-24143 Kiel, Germany
- Department of Microelectronics and Biomedical Engineering, Center for Nanotechnology and Nanosensors, Technical University of Moldova, Stefan cel Mare 168, Chişinău MD2004, Moldova
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Nicolai Ababii
- Department of Microelectronics and Biomedical Engineering, Center for Nanotechnology and Nanosensors, Technical University of Moldova, Stefan cel Mare 168, Chişinău MD2004, Moldova
| | - Abhishek Kumar Mishra
- Physics Department, School of Engineering, University of Petroleum & Energy Studies, Bidholi via Premnagar, Dehradun 248007, India
| | - Ole Gronenberg
- Synthesis and Real Structure, Institute for Materials Science, Christian-Albrechts Universität zu Kiel, Kaiser str. 2, D-24143 Kiel, Germany
| | - Alexander Vahl
- Chair for Multicomponent Materials, Faculty of Engineering, Institute for Materials Science, Kiel University, Kaiser str. 2, D-24143 Kiel, Germany
| | - Ulrich Schürmann
- Synthesis and Real Structure, Institute for Materials Science, Christian-Albrechts Universität zu Kiel, Kaiser str. 2, D-24143 Kiel, Germany
| | - Viola Duppel
- Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
| | - Helge Krüger
- Functional Nanomaterials, Faculty of Engineering, Institute for Materials Science, Kiel University, Kaiser Str. 2, D-24143 Kiel, Germany
| | - Lee Chow
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Lorenz Kienle
- Synthesis and Real Structure, Institute for Materials Science, Christian-Albrechts Universität zu Kiel, Kaiser str. 2, D-24143 Kiel, Germany
| | - Franz Faupel
- Chair for Multicomponent Materials, Faculty of Engineering, Institute for Materials Science, Kiel University, Kaiser str. 2, D-24143 Kiel, Germany
| | - Rainer Adelung
- Functional Nanomaterials, Faculty of Engineering, Institute for Materials Science, Kiel University, Kaiser Str. 2, D-24143 Kiel, Germany
| | - Nora H de Leeuw
- School of Chemistry, University of Leeds, Leeds LS2 9JT, United Kingdom
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Sandra Hansen
- Functional Nanomaterials, Faculty of Engineering, Institute for Materials Science, Kiel University, Kaiser Str. 2, D-24143 Kiel, Germany
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Mishra AK, Rana C, Saha S. Fabrication and comparison of Heterojunction solar cells from CdS/PbS nanoparticles and CdS/PbS bulk. Nano Ex 2020. [DOI: 10.1088/2632-959x/abab16] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
PbS nanoparticles and CdS nanoparticles are grown by chemical methods. Also bulk PbS is grown by simple chemical methods without using any capping agent. The material formation is identified from XRD.TEM image shows the formation of different shaped PbS nanoparticles, CdS nanoparticles, and bulk PbS. Three different heterojunction solar cells are fabricated by CdS and PbS samples using a spin coating technique. Finally, gold is evaporated on PbS film. Current-voltage characteristics data for three heterojunction solar cells are taken under dark and illumination conditions. For each fabricated solar cell open-circuit voltage (VOC), short circuit current density (ISC), fill factor (FF), and power conversion efficiency(
ῃ
) are measured. Finally, a comparison of the characteristics is done for different fabricated heterojunction solar cells.
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Affiliation(s)
- K K Sahu
- Department of Internal Medicine, Saint Vincent Hospital, 123 Summer Street, Worcester, MA 01608, USA
| | - A K Mishra
- Department of Internal Medicine, Saint Vincent Hospital, 123 Summer Street, Worcester, MA 01608, USA
| | - A Lal
- Division of Pulmonary and Critical Care Medicine, Mayo Clinic, 200 1st St SW, Rochester, Minnesota, 55902, USA
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35
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Affiliation(s)
- A K Mishra
- Department of Internal Medicine, Saint Vincent Hospital, Worcester, MA 01608, USA
| | - K K Sahu
- Department of Internal Medicine, Saint Vincent Hospital, Worcester, MA 01608, USA
| | - V Baddam
- Department of Internal Medicine, Saint Vincent Hospital, University of Massachusetts Medical School, Worcester, MA 01608, USA
| | - J Sargent
- Department of Internal Medicine, Saint Vincent Hospital, University of Massachusetts Medical School, Worcester, MA 01608, USA
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36
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Lupan C, Khaledialidusti R, Mishra AK, Postica V, Terasa MI, Magariu N, Pauporté T, Viana B, Drewes J, Vahl A, Faupel F, Adelung R. Pd-Functionalized ZnO:Eu Columnar Films for Room-Temperature Hydrogen Gas Sensing: A Combined Experimental and Computational Approach. ACS Appl Mater Interfaces 2020; 12:24951-24964. [PMID: 32367706 DOI: 10.1021/acsami.0c02103] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Reducing the operating temperature to room temperature is a serious obstacle on long-life sensitivity with long-term stability performances of gas sensors based on semiconducting oxides, and this should be overcome by new nanotechnological approaches. In this work, we report the structural, morphological, chemical, optical, and gas detection characteristics of Eu-doped ZnO (ZnO:Eu) columnar films as a function of Eu content. The scanning electron microscopy (SEM) investigations showed that columnar films, grown via synthesis from a chemical solutions (SCS) approach, are composed of densely packed columnar type grains. The sample sets with contents of ∼0.05, 0.1, 0.15, and 0.2 at% Eu in ZnO:Eu columnar films were studied. Surface functionalization was achieved using PdCl2 aqueous solution with additional thermal annealing in air at 650 °C. The temperature-dependent gas-detection characteristics of Pd-functionalized ZnO:Eu columnar films were measured in detail, showing a good selectivity toward H2 gas at operating OPT temperatures of 200-300 °C among several test gases and volatile organic compound vapors, such as methane, ammonia, acetone, ethanol, n-butanol, and 2-propanol. At an operating temperature OPT of 250 °C, a high gas response Igas/Iair of ∼115 for 100 ppm H2 was obtained. Experimental results indicate that Eu doping with an optimal content of about 0.05-0.1 at% along with Pd functionalization of ZnO columns leads to a reduction of the operating temperature of the H2 gas sensor. DFT-based computations provide mechanistic insights into the gas-sensing mechanism by investigating interactions between the Pd-functionalized ZnO:Eu surface and H2 gas molecules supporting the experimentally observed results. The proposed columnar materials and gas sensor structures would provide a special advantage in the fields of fundamental research, applied physics studies, and ecological and industrial applications.
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Affiliation(s)
- Cristian Lupan
- Center for Nanotechnology and Nanosensors, Department of Microelectronics and Biomedical Engineering, Technical University of Moldova, 168, Stefan cel Mare Av., MD-2004 Chisinau, Republic of Moldova
| | - Rasoul Khaledialidusti
- Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Abhishek Kumar Mishra
- Department of Physics, School of Engineering, University of Petroleum & Energy Studies, Bidholi via Premnagar, Dehradun 248007, India
| | - Vasile Postica
- Center for Nanotechnology and Nanosensors, Department of Microelectronics and Biomedical Engineering, Technical University of Moldova, 168, Stefan cel Mare Av., MD-2004 Chisinau, Republic of Moldova
| | - Maik-Ivo Terasa
- Functional Nanomaterials, Faculty of Engineering, Institute for Materials Science, Kiel University, Kaiserstr. 2, D-24143 Kiel, Germany
| | - Nicolae Magariu
- Center for Nanotechnology and Nanosensors, Department of Microelectronics and Biomedical Engineering, Technical University of Moldova, 168, Stefan cel Mare Av., MD-2004 Chisinau, Republic of Moldova
| | - Thierry Pauporté
- PSL Université, Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris (IRCP), 11 rue P. et M. Curie, F, 75005 Paris, France
| | - Bruno Viana
- PSL Université, Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris (IRCP), 11 rue P. et M. Curie, F, 75005 Paris, France
| | - Jonas Drewes
- Chair for Multicomponent Materials, Faculty of Engineering, Institute for Materials Science, Kiel University, Kaiserstr. 2, D-24143 Kiel, Germany
| | - Alexander Vahl
- Chair for Multicomponent Materials, Faculty of Engineering, Institute for Materials Science, Kiel University, Kaiserstr. 2, D-24143 Kiel, Germany
| | - Franz Faupel
- Chair for Multicomponent Materials, Faculty of Engineering, Institute for Materials Science, Kiel University, Kaiserstr. 2, D-24143 Kiel, Germany
| | - Rainer Adelung
- Functional Nanomaterials, Faculty of Engineering, Institute for Materials Science, Kiel University, Kaiserstr. 2, D-24143 Kiel, Germany
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Affiliation(s)
- K K Sahu
- Department of Medicine, Saint Vincent Hospital, 123 Summer Street, Worcester, MA 01608, USA
| | - A Lal
- Department of Medicine, Saint Vincent Hospital, 123 Summer Street, Worcester, MA 01608, USA
| | - A K Mishra
- Department of Medicine, Saint Vincent Hospital, 123 Summer Street, Worcester, MA 01608, USA
| | - P Zhang
- Department of Medicine, Saint Vincent Hospital, 123 Summer Street, Worcester, MA 01608, USA
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38
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Affiliation(s)
- K K Sahu
- Department of Internal Medicine, Saint Vincent Hospital, 123 Summer Street, Worcester, MA 01608, USA
| | - A K Mishra
- Department of Internal Medicine, Saint Vincent Hospital, 123 Summer Street, Worcester, MA 01608, USA
| | - C A Lopez
- Division of Pulmonology and Critical Care Medicine, Reliant Medical Group, 123 Summer Street, Worcester, MA 01608, USA
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39
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Affiliation(s)
- A K Mishra
- Department of Internal Medicine, Saint Vincent Hospital, Worcester, MA 01608, USA
| | - K K Sahu
- Department of Internal Medicine, Saint Vincent Hospital, Worcester, MA 01608, USA
| | - A Lal
- Department of Internal Medicine, Saint Vincent Hospital, Worcester, MA 01608, USA
| | - V Menon
- Department of Internal Medicine, Saint Vincent Hospital, Worcester, MA 01608, USA
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40
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Affiliation(s)
- A K Mishra
- From the Department of Internal Medicine, Saint Vincent Hospital, Worcester, MA 01608, USA
| | - K K Sahu
- From the Department of Internal Medicine, Saint Vincent Hospital, Worcester, MA 01608, USA
| | - A Lal
- Department of Critical Care, Mayo Clinic, Rochester, MN, USA
| | - M Sujata
- Department of Critical Care, Lahey Clinic, Burlington, MA, USA
- Saint Vincent Hospital, Worcester, MA 01608, USA
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41
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Sahu KK, Mishra AK, Lal A, Kranis M. An interesting case of expressive aphasia: Enterococcus faecalis-related infective endocarditis complicating as septic emboli. QJM 2020; 113:146-147. [PMID: 31268537 DOI: 10.1093/qjmed/hcz169] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- K K Sahu
- Department of Internal Medicine, Saint Vincent Hospital, 123 Summer Street, Worcester, MA 01608, USA
| | - A K Mishra
- Department of Internal Medicine, Saint Vincent Hospital, 123 Summer Street, Worcester, MA 01608, USA
| | - A Lal
- Department of Internal Medicine, Saint Vincent Hospital, 123 Summer Street, Worcester, MA 01608, USA
| | - M Kranis
- Department of Cardiovascular diseases, Saint Vincent Hospital, 123 Summer Street, Worcester, MA 01608, USA
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42
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Affiliation(s)
- A K Mishra
- From the Department of Internal Medicine, Saint Vincent Hospital, Worcester, MA 01608, USA
| | - K K Sahu
- From the Department of Internal Medicine, Saint Vincent Hospital, Worcester, MA 01608, USA
| | - A Lal
- Department of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN 55902, USA
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Moja TN, Bunekar N, Mishra SB, Tsai TY, Hwang SS, Mishra AK. Melt processing of polypropylene-grafted-maleic anhydride/Chitosan polymer blend functionalized with montmorillonite for the removal of lead ions from aqueous solutions. Sci Rep 2020; 10:217. [PMID: 31937796 PMCID: PMC6959273 DOI: 10.1038/s41598-019-57079-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 07/17/2019] [Accepted: 12/16/2019] [Indexed: 11/12/2022] Open
Abstract
Heavy metals such as lead ions Pb (II) are a primary concern in the aquatic environment. These is because Pb (II) is poisonous at a threshold limit above 0.01 mg/L, when consumed over a long period of time. Pb (II) poisoning is very harmful to various organs viz. heart, intestine and kidneys. Besides, it affects bones, tissues, nervous and reproductive systems. Hence, it is important to remove Pb (II) from aquatic environment. Polypropylene (PP) and polypropylene grafted-maleic-anhydride (PP-g-MA) based nanocomposites reinforced with Chitosan (CS) and modified montmorillonite clay nanofiller (CL120DT) were successfully fabricated using twin screw melt extrusion for adsorption of Pb (II). The resulting nanocomposites were characterized by XRD to analyze the dispersion properties of the material, TEM and SEM for surface morphology, FTIR analysis for the functional groups and TGA for thermal stability. Pure PP showed two sharp peaks, but there was decreased in the intensity upon adding of CS and CL120DT. Among series of nanocomposites 2.0 phr and 4.0 phr loaded samples shows better storage module than that of pure PP. The uptake of Pb (II) from lead nitrate aqueous solution by PP + PP-g-MA/CL120DT-CS 2.0 phr nanocomposites followed the Langmuir isotherm model, with a remediation of 90.9% at pH 8 and was verified by pseudo-second order kinetic model. These results indicate that PP + PP-g-MA//CL120DT-CS 2.0 phr nanocomposites performed as a superabsorbent for the Pb (II) ion removal from aqueous solution.
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Affiliation(s)
- T N Moja
- Nanotechnology and Water Sustainability Research Unit, College of Science, Engineering and Technology, University of South Africa, Florida Campus, Johannesburg, South Africa
| | - N Bunekar
- Department of Chemistry, Master Program in Nanotechnology & Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, 32023, Taiwan, ROC
| | - S B Mishra
- Nanotechnology and Water Sustainability Research Unit, College of Science, Engineering and Technology, University of South Africa, Florida Campus, Johannesburg, South Africa.
| | - T-Y Tsai
- Department of Chemistry, Master Program in Nanotechnology & Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, 32023, Taiwan, ROC.
| | - S S Hwang
- Department of Mechanical Engineering, Chien-Hsin University of Science and Technology, Chung-Li, 32097, Taiwan, ROC
| | - A K Mishra
- Nanotechnology and Water Sustainability Research Unit, College of Science, Engineering and Technology, University of South Africa, Florida Campus, Johannesburg, South Africa.
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Mishra AK, Santos R, Hall-Spencer JM. Elevated trace elements in sediments and seagrasses at CO 2 seeps. Mar Environ Res 2020; 153:104810. [PMID: 31733909 DOI: 10.1016/j.marenvres.2019.104810] [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] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 09/29/2019] [Accepted: 10/04/2019] [Indexed: 06/10/2023]
Abstract
Seagrasses often occur around shallow marine CO2 seeps, allowing assessment of trace metal accumulation. Here, we measured Cd, Cu, Hg, Ni, Pb and Zn levels at six CO2 seeps and six reference sites in the Mediterranean. Some seep sediments had elevated metal concentrations; an extreme example was Cd which was 43x more concentrated at a seep site than its corresponding reference site. Three seeps had metal levels that were predicted to adversely affect marine biota, namely Vulcano (for Hg), Ischia (for Cu) and Paleochori (for Cd and Ni). There were higher-than-sediment levels of Zn and Ni in Posidonia oceanica and of Zn in Cymodocea nodosa, particularly in roots. High levels of Cu were found in Ischia seep sediments, yet seagrass was abundant there, and the plants contained low levels of Cu. Differences in bioavailability and toxicity of trace elements helps explain why seagrasses can be abundant at some CO2 seeps but not at others.
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Affiliation(s)
- A K Mishra
- Centre for Marine Sciences, University of Algarve, Campus de Gambelas, Faro, 8005-139, Portugal; School of Biological and Marine Sciences, University of Plymouth, Plymouth, PL48A, UK.
| | - R Santos
- Centre for Marine Sciences, University of Algarve, Campus de Gambelas, Faro, 8005-139, Portugal
| | - J M Hall-Spencer
- School of Biological and Marine Sciences, University of Plymouth, Plymouth, PL48A, UK; Shimoda Marine Research Centre, University of Tsukuba, Shizuoka, 415-0025, Japan
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Pandey AK, Mishra AK. Tunable electrochemical synthesis of pyrrole-based adsorbents. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1706574] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | - Abhishek Kumar Mishra
- Chemistry Department, DDU Gorakhpur University, Gorakhpur, India
- Department of Chemistry, Sardar Patel Institute of Science and Technology Mahavidyalaya, Gorakhpur, India
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46
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Mishra AK, Mishra S. Tuning of adsorption energies of CO2 and CH4 in borocarbonitrides BxCyNz: A first-principles study. J Mol Graph Model 2019; 93:107446. [DOI: 10.1016/j.jmgm.2019.107446] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 08/28/2019] [Accepted: 08/29/2019] [Indexed: 10/26/2022]
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Tripathi MK, Rasheed MSU, Mishra AK, Patel DK, Singh MP. Silymarin Protects Against Impaired Autophagy Associated with 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine-Induced Parkinsonism. J Mol Neurosci 2019; 70:276-283. [PMID: 31732923 DOI: 10.1007/s12031-019-01431-8] [Citation(s) in RCA: 10] [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: 09/20/2019] [Accepted: 10/18/2019] [Indexed: 12/28/2022]
Abstract
1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) exacerbates mitochondrial impairment and α-synuclein expression leading to Parkinsonism. Impaired mitochondria and over-expressed α-synuclein are degraded and eliminated via macroautophagy and chaperone-mediated autophagy. Owing to multiple properties, silymarin protects from oxidative stress-mediated cellular injury. However, its effect on MPTP-induced changes in autophagy is not yet known. The study aimed to decipher the effect of silymarin on MPTP-induced changes in autophagy. Male mice (20-25 g) were treated with silymarin (intraperitoneally, daily, 40 mg/kg) for 2 weeks. On day 7, a few animals were also administered with MPTP (intraperitoneally, 20 mg/kg, 4 injections at 2-h interval) along with vehicles. Striatal dopamine content was determined. Western blot analysis was done to assess α-synuclein, beclin-1, sequestosome, phosphorylated 5' adenosine monophosphate-activated protein kinase (p-AMPK), lysosome-associated membrane protein-2 (LAMP-2), heat shock cognate-70 (Hsc-70), LAMP-2A, phosphorylated unc-51-like autophagy activating kinase (p-Ulk1), and phosphorylated mechanistic target of rapamycin (p-mTOR) levels in the nigrostriatal tissue. Silymarin rescued from MPTP-induced increase in beclin-1, sequestosome, p-AMPK, and p-Ulk1 and decrease in LAMP-2, p-mTOR, and LAMP-2A levels. Silymarin defended against MPTP-induced increase in α-synuclein and reduction in dopamine content. The results demonstrate that silymarin protects against MPTP-induced changes in autophagy leading to Parkinsonism.
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Affiliation(s)
- Manish Kumar Tripathi
- Toxicogenomics and Predictive Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Mohd Sami Ur Rasheed
- Toxicogenomics and Predictive Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Abhishek Kumar Mishra
- Toxicogenomics and Predictive Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Devendra Kumar Patel
- Analytical Chemistry Laboratory, Regulatory Toxicology Group, CSIR-IITR, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India
| | - Mahendra Pratap Singh
- Toxicogenomics and Predictive Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226001, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India.
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48
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Hakkim H, Sinha V, Chandra BP, Kumar A, Mishra AK, Sinha B, Sharma G, Pawar H, Sohpaul B, Ghude SD, Pithani P, Kulkarni R, Jenamani RK, Rajeevan M. Volatile organic compound measurements point to fog-induced biomass burning feedback to air quality in the megacity of Delhi. Sci Total Environ 2019; 689:295-304. [PMID: 31276997 DOI: 10.1016/j.scitotenv.2019.06.438] [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: 02/21/2019] [Revised: 06/25/2019] [Accepted: 06/26/2019] [Indexed: 06/09/2023]
Abstract
We report the first ambient measurements of thirteen VOCs for investigations of emissions and air quality during fog and non-fog wintertime conditions at a tower site (28.57° N, 77.11° E, 220 m amsl) in the megacity of Delhi. Measurements of acetonitrile (biomass burning (BB) tracer), isoprene (biogenic emission tracer in daytime), toluene (a traffic exhaust tracer) and benzene (emitted from BB and traffic), together with soluble and reactive oxygenated VOCs such as methanol, acetone and acetaldehyde were performed during the winters of 2015-16 and 2016-17, using proton transfer reaction mass spectrometry. Remarkably, ambient VOC composition changes during fog were not governed by solubility. Acetaldehyde, toluene, sum of C8-aromatics (e.g. xylenes), sum of C9-aromatics (e.g. trimethyl benzenes) decreased by ≥30% (>95% confidence interval), whereas acetonitrile and benzene showed significant increases by 20% (>70% confidence interval), even after accounting for boundary layer dilution. During fog, the lower temperatures appeared to induce an emissions feedback from enhanced open BB within Delhi for warming, releasing both gaseous and aerosol pollutants with consequences for fog chemistry, sustenance and intensity. The potential feedback is important to consider for improving current emission parametrizations in models used for predicting air quality and fog in such atmospheric environments.
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Affiliation(s)
- H Hakkim
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S.A.S. Nagar, Manauli PO, Punjab, 140306, India
| | - V Sinha
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S.A.S. Nagar, Manauli PO, Punjab, 140306, India.
| | - B P Chandra
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S.A.S. Nagar, Manauli PO, Punjab, 140306, India
| | - A Kumar
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S.A.S. Nagar, Manauli PO, Punjab, 140306, India
| | - A K Mishra
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S.A.S. Nagar, Manauli PO, Punjab, 140306, India
| | - B Sinha
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S.A.S. Nagar, Manauli PO, Punjab, 140306, India
| | - G Sharma
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S.A.S. Nagar, Manauli PO, Punjab, 140306, India
| | - H Pawar
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S.A.S. Nagar, Manauli PO, Punjab, 140306, India
| | - B Sohpaul
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, S.A.S. Nagar, Manauli PO, Punjab, 140306, India
| | - Sachin D Ghude
- Indian Institute of Tropical Meteorology, Pashan, Pune 411008, India
| | - P Pithani
- Indian Institute of Tropical Meteorology, Pashan, Pune 411008, India
| | - R Kulkarni
- Indian Institute of Tropical Meteorology, Pashan, Pune 411008, India; Savitribai Phule Pune University, Pune, India
| | - R K Jenamani
- Indian Meteorological Department, New Delhi 110003, India
| | - M Rajeevan
- Ministry of Earth Sciences, Government of India, New Delhi 110003, India
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49
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Sahu KK, Doshi A, Mishra AK, Kranis M. A female with five chambers. Neth Heart J 2019; 28:171. [PMID: 31654326 PMCID: PMC7052091 DOI: 10.1007/s12471-019-01338-4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- K K Sahu
- Department of Internal Medicine, Saint Vincent Hospital, 123 Summer Street, 01608, Worcester, MA, United States.
| | - A Doshi
- Department of Cardiovascular diseases, Saint Vincent Hospital, 123 Summer Street, 01608, Worcester, MA, United States
| | - A K Mishra
- Department of Internal Medicine, Saint Vincent Hospital, 123 Summer Street, 01608, Worcester, MA, United States
| | - M Kranis
- Department of Cardiovascular diseases, Saint Vincent Hospital, 123 Summer Street, 01608, Worcester, MA, United States
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50
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Sahu KK, Doshi A, Mishra AK, Kranis M. A female with five chambers. Neth Heart J 2019; 28:174-175. [PMID: 31654327 PMCID: PMC7052089 DOI: 10.1007/s12471-019-01339-3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- K K Sahu
- Department of Internal Medicine, Saint Vincent Hospital, 123 Summer Street, 01608, Worcester, MA, United States.
| | - A Doshi
- Department of Cardiovascular diseases, Saint Vincent Hospital, 123 Summer Street, 01608, Worcester, MA, United States
| | - A K Mishra
- Department of Internal Medicine, Saint Vincent Hospital, 123 Summer Street, 01608, Worcester, MA, United States
| | - M Kranis
- Department of Cardiovascular diseases, Saint Vincent Hospital, 123 Summer Street, 01608, Worcester, MA, United States
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