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Garg S, Yadav M, Chandra A, Sapra S, Gahlawat S, Ingole PP, Pap Z, Hernadi K. Biofabricated BiOI with enhanced photocatalytic activity under visible light irradiation. RSC Adv 2018; 8:29022-29030. [PMID: 35548002 PMCID: PMC9084558 DOI: 10.1039/c8ra05661g] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [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: 07/02/2018] [Accepted: 08/09/2018] [Indexed: 11/21/2022] Open
Abstract
The use of plant extract eliminates the usage of harmful chemicals and serves as an eco-friendly approach for environmental remediation.
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Affiliation(s)
- Seema Garg
- Department of Chemistry
- Amity Institute of Applied Sciences
- Amity University
- Noida 201313
- India
| | - Mohit Yadav
- Department of Chemistry
- Amity Institute of Applied Sciences
- Amity University
- Noida 201313
- India
| | - Amrish Chandra
- Amity Institute of Pharmacy
- Amity University
- Noida 201313
- India
| | - Sameer Sapra
- Department of Chemistry
- Indian Institute of Technology, Delhi
- New Delhi 110016
- India
| | - Soniya Gahlawat
- Department of Chemistry
- Indian Institute of Technology, Delhi
- New Delhi 110016
- India
| | - Pravin P. Ingole
- Department of Chemistry
- Indian Institute of Technology, Delhi
- New Delhi 110016
- India
| | - Zsolt Pap
- Nanostructured Materials and Bio-Nano-Interfaces Center
- Interdisciplinary Research Institute on Bio-Nano-Sciences
- Babes,-Bolyai University
- Cluj-Napoca 400271
- Romania
| | - Klara Hernadi
- Department of Applied and Environmental Chemistry
- University of Szeged
- H-6720 Szeged
- Hungary
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Yadav A, Yadav M, Kumar S, Sharma D, Yadav JP. In vitro Antioxidant Activities and GC-MS Analysis of Different Solvent Extracts of Acacia nilotica Leaves. Indian J Pharm Sci 2018. [DOI: 10.4172/pharmaceutical-sciences.1000436] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Yadav M, Kaushik M, Sharma R, Chowdry P. MINIMAL INVASIVE SURGICAL APPROACH IN THEMANAGEMENT OF COMMINUTED CROWN-ROOT FRACTURE- A CASE REPORT. J West Afr Coll Surg 2017; 7:128-140. [PMID: 30479995 PMCID: PMC6237318] [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] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Comminuted root fractures have a questionable prognosis and present with limited treatment options. In the following case, a comminuted crown root fracture in relation to maxillary left central incisor was managed with a minimally invasive surgical approach. The procedure involved repairing the multiple fracture lines in the root with Biodentine following the endodontic therapy and root resection. The patient was found to be asymptomatic at the end of a follow up period of ten months.
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Affiliation(s)
- M Yadav
- Department of Conservative Dentistry and Endodontics, Army College of Dental Sciences, Jai Jawahar Nagar, Chennapur, Secunderabad, Telangana, India
| | - M Kaushik
- Department of Conservative Dentistry and Endodontics, Army College of Dental Sciences
| | - R Sharma
- Department of Conservative Dentistry and Endodontics, Army College of Dental Sciences
| | - P Chowdry
- Department of Conservative Dentistry and Endodontics, Army College of Dental Sciences
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Gautam LK, Yadav M, Rathore JS. Functional annotation of a novel toxin-antitoxin system Xn-RelT of Xenorhabdus nematophila; a combined in silico and in vitro approach. J Mol Model 2017; 23:189. [PMID: 28508139 DOI: 10.1007/s00894-017-3361-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 07/23/2016] [Accepted: 04/26/2017] [Indexed: 12/19/2022]
Abstract
Toxin-antitoxin (TA) complexes play an important role in stress responses and programmed cell death in bacteria. The RelB-RelE toxin antitoxin system is well studied in Escherichia coli. In this study, we used combined in silico and in vitro approaches to study a novel Xn-RelT toxin from Xenorhabdus nematophila bearing its own antitoxin Xn-RelAT-a RelB homolog of E. coli. The structure for this toxin-antitoxin pair is yet unknown. We generated homology-based models of X. nematophila RelT toxin and antitoxin. The deduced models were further characterized for protein-nucleic acid, protein-protein interactions and gene ontology. A detrimental effect of recombinant Xn-RelT on host E. coli was determined through endogenous toxicity assay. When expressed from a isopropyl β-D-1-thiogalactopyranoside-regulated LacZ promoter, Xn-RelT toxin showed a toxic effect on E. coli cells. These observations imply that the conditional cooperativity governing the Xn-RelT TA operon in X. nematophila plays an important role in stress management and programmed cell death.
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Affiliation(s)
- Lalit Kumar Gautam
- School of Biotechnology, Gautam Buddha University, Yamuna Expressway, Gautam Buddha Nagar, Greater Noida, Uttar Pradesh, 201312, India.,Department of Biotechnology, Panjab University, Chandigarh, 160014, India
| | - Mohit Yadav
- School of Biotechnology, Gautam Buddha University, Yamuna Expressway, Gautam Buddha Nagar, Greater Noida, Uttar Pradesh, 201312, India
| | - Jitendra Singh Rathore
- School of Biotechnology, Gautam Buddha University, Yamuna Expressway, Gautam Buddha Nagar, Greater Noida, Uttar Pradesh, 201312, India.
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Abstract
Purpose
Inspired by India’s focus in the 11th and 12th Five Year Plans on fulfilling the surging energy needs, the purpose of this paper is to capture the Quality of work life (QWL) in the Indian power sector.
Design/methodology/approach
QWL measured with seven dimensions was validated with CFA, and the χ2 difference test based on the Bonferroni method (Simes, 1986) was used for discriminant validity. Individual processes were analyzed with correlation analysis and ANOVA. The influencers of QWL in three processes were compared with standardized coefficients and model fit indices.
Findings
Freedom from work-related stress, salary, relationship with work colleagues, job security and communication and job satisfaction positively influenced QWL. Supervisor support was not found to influence QWL, while job involvement was found to negatively influence QWL.
Research limitations/implications
The scope of this study is limited to India, however, and results may not generalize to other countries. Hence, future studies should replicate the study in power sector or allied manufacturing sector in different cultural settings. Another limitation lies in its relatively small sample size; therefore, generalizability of the results may be restricted.
Practical implications
The findings provide useful information to assist HR managers in improving the QWL among Indian power sector employees.
Originality/value
The study is one of the first studies to date to empirically examine the QWL among Indian power sector employees.
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Kaushik M, Yadav M. MARGINAL MICROLEAKAGE PROPERTIES OF ACTIVA BIOACTIVE RESTORATIVE AND NANOHYBRID COMPOSITE RESIN USING TWO DIFFERENT ADHESIVES IN NON CARIOUS CERVICAL LESIONS - AN IN VITRO STUDY. J West Afr Coll Surg 2017; 7:1-14. [PMID: 29951462 PMCID: PMC6016748] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
BACKGROUND In clinical practice, the restoration of non-carious cervical lesions is a challenge, because most of the time the cervical margin is located in cementum or dentin. This characteristic makes the cervical margin more susceptible to microleakage, causing cavosurface stains, postoperative sensitivity and also favours the incidence of carious lesions. AIM To compare and evaluate the microleakage in class V lesions restored with Activa Bioactive restorative and nanohybrid composite resin using two different bonding agents. METHODOLOGY In this study, 50 class V cavities were prepared in freshly extracted teeth. The samples were randomly divided into 5 groups (n=10), depending on the type of restorative material and bonding agent: Group 1 - Activa Bioactive (Pulpdent, USA) + No bonding, Group 2 - Activa Bioactive + Tetric N Bond (Ivoclar Vivadent, Colombia),Group 3 - Activa Bioactive + G Bond (GC Corp., Tokyo, Japan), Group 4 - Nanohybrid Composite (Ivoclar Vivadent, Colombia) + Tetric N Bond, Group 5 - Nanohybrid Composite + G Bond. The samples were restored with their respective material based on the group. After curing all the specimens were subjected to thermocycling and cyclic loading. Specimens were stained with 2% rhodamin b dye and evaluated for dye penetration. RESULTS Results were obtained based on Kruskal Wallis and Mann Whitney U- test. CONCLUSION Within the limitations of this study, none of the materials were free from microleakage. All the materials showed more microleakage at gingival margins compared to occlusal margins. Among all the groups Activa Bioactive restorative when used in combination with Tetric N Bond showed the least microleakage.
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Affiliation(s)
- M Kaushik
- Department of Conservative Dentistry and Endodontics, Army College of Dental Sciences, Secunderabad, Telangana 500087, India
| | - M Yadav
- Department of Conservative Dentistry and Endodontics, Army College of Dental Sciences, Secunderabad, Telangana 500087, India
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Dutta B, Ruhela R, Yadav M, Singh A, Sahu K, Padmanabhan N, Chakravartty J. Liquid-liquid extraction studies of gadolinium with N -methyl- N,N,N -trioctyl ammonium-bis-(2-ethylhexyl) phosphonate – Task specific ionic liquid. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2016.11.033] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Chawla S, Uppal H, Yadav M, Bahadur N, Singh N. Zinc peroxide nanomaterial as an adsorbent for removal of Congo red dye from waste water. Ecotoxicol Environ Saf 2017; 135:68-74. [PMID: 27693679 DOI: 10.1016/j.ecoenv.2016.09.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [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: 06/17/2016] [Revised: 09/10/2016] [Accepted: 09/19/2016] [Indexed: 05/12/2023]
Abstract
In the past decade, various natural byproducts, advanced metal oxide composites and photocatalysts have been reported for removal of dyes from water. Although these materials are useful for select applications, they have some limitations such as use at fixed temperature, ultra violet (UV) light and the need for sophisticated experimental set up. These materials can remove dyes up to a certain extent but require long time. To overcome these limitations, a promising adsorbent zinc peroxide (ZnO2) nanomaterial has been developed for the removal of Congo red (CR) dye from contaminated water. ZnO2 is highly efficient even in the absence of sunlight to remove CR from contaminated water upto the permissible limits set by the World Health Organization (WHO) and the United States- Environmental Protection Agency (US-EPA). The adsorbent has a specific property to adjust the pH of the test solution within 6.5-7.5 range irrespective of acidic or basic nature of water. The adsorption capacity of the material for CR dye was 208mgg-1 within 10min at 2-10pH range. The proposed material could be useful for the industries involved in water purification. The removal of CR has been confirmed by spectroscopic and microscopic techniques. The adsorption data followed a second order kinetics and Freundlich isotherm.
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Affiliation(s)
- Sneha Chawla
- CSIR-National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi 110012, India; Metrology in chemistry (ALSIM), India; Academy of Scientific and Innovative Research (AcSIR), India
| | - Himani Uppal
- CSIR-National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi 110012, India; Metrology in chemistry (ALSIM), India; Academy of Scientific and Innovative Research (AcSIR), India
| | - Mohit Yadav
- Amity Institute of Nanotechnology, Noida 201301, India
| | - Nupur Bahadur
- Amity Institute of Nanotechnology, Noida 201301, India
| | - Nahar Singh
- CSIR-National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi 110012, India; Metrology in chemistry (ALSIM), India; Academy of Scientific and Innovative Research (AcSIR), India.
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Kanagare AB, Singh KK, Kumar M, Yadav M, Ruhela R, Singh AK, Kumar A, Shinde VS. DTDGA-Impregnated XAD-16 Beads for Separation of Gold from Electronic Waste Solutions. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b03350] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | | | - V. S. Shinde
- Savitribai Phule Pune University, Pune 411007, India
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61
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Nand N, Mittal R, Yadav M, Venu S, Deshmukh AR. Kallman Syndrome. J Assoc Physicians India 2016; 64:106-107. [PMID: 27766822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Kallman syndrome (KS) is a rare genetic disorder characterized clinically by failure to attain puberty or failure to fully complete it along with an absent or impaired sense of smell with absence of bilateral olfactory bulbi and sulci alongwith absent olfactory tracts. Only very few cases of Kallman syndrome have been reported in females in Indian population.
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Affiliation(s)
- N Nand
- Senior Professor and Unit Head
| | - R Mittal
- Resident, Dept. of Medicine, Pt. B. D. Sharma Post Graduate Institute of Medical Sciences, Rohtak, Haryana
| | - M Yadav
- Resident, Dept. of Medicine, Pt. B. D. Sharma Post Graduate Institute of Medical Sciences, Rohtak, Haryana
| | - S Venu
- Resident, Dept. of Medicine, Pt. B. D. Sharma Post Graduate Institute of Medical Sciences, Rohtak, Haryana
| | - A R Deshmukh
- Resident, Dept. of Medicine, Pt. B. D. Sharma Post Graduate Institute of Medical Sciences, Rohtak, Haryana
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Jain S, Nagarjuna D, Gaind R, Chopra S, Debata PK, Dawar R, Sardana R, Yadav M. Escherichia vulneris: an unusual cause of complicated diarrhoea and sepsis in an infant. A case report and review of literature. New Microbes New Infect 2016; 13:83-6. [PMID: 27536376 PMCID: PMC4975714 DOI: 10.1016/j.nmni.2016.07.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 06/21/2016] [Accepted: 07/01/2016] [Indexed: 11/16/2022] Open
Abstract
Escherichia vulneris is an opportunistic human pathogen. It has been primarily reported in adult patients and invasive infections have been observed in immune-suppressed individuals. This is the first report of E. vulneris causing complicated diarrhoea and sepsis in an infant. Two month old sick infant, born full-term, was admitted to the paediatrics department with loose motions and refusal to feed for four days. E. vulneris was isolated from blood in pure culture. The isolate was characterized for diarrhoeal virulence markers: heat labile and heat stable toxins (LT, ST) and hemolysin (hlyA) by PCR. The presence of LT enterotoxin and hemolysin provides strong evidence of the diarrhoeagenic potential of E. vulneris, further leading to the invasive infection triggering sepsis. As E. vulneris can lead to serious complications, an attempt should be made in clinical laboratories to identify and further characterize this new Escherichia species.
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Affiliation(s)
- S Jain
- Department of Microbiology, Vardhman Mahavir Medical College (VMMC) and Safdarjung Hospital, Delhi, India
| | - D Nagarjuna
- Dr. B.R. Ambedkar Centre for Biomedical Research (ACBR), University of Delhi, Delhi, India
| | - R Gaind
- Department of Microbiology, Vardhman Mahavir Medical College (VMMC) and Safdarjung Hospital, Delhi, India
| | - S Chopra
- Department of Microbiology, Vardhman Mahavir Medical College (VMMC) and Safdarjung Hospital, Delhi, India
| | - P K Debata
- Department of Paediatrics, Vardhman Mahavir Medical College (VMMC) and Safdarjung Hospital, Delhi, India
| | - R Dawar
- Department of Microbiology, Indraprastha Apollo Hospital, Sarita Vihar, New Delhi, India
| | - R Sardana
- Department of Microbiology, Indraprastha Apollo Hospital, Sarita Vihar, New Delhi, India
| | - M Yadav
- Dr. B.R. Ambedkar Centre for Biomedical Research (ACBR), University of Delhi, Delhi, India
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Iyer N, Ruhela R, Das A, Yadav M, Singh AK, Chakravartty JK. Novel imino diacetamide grafted styrene divinyl benzene resin for separation and recovery of palladium from simulated high level liquid waste. SEP SCI TECHNOL 2016. [DOI: 10.1080/01496395.2016.1199570] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 10/21/2022]
Affiliation(s)
- N. Iyer
- Materials Processing Division, Bhabha Atomic Research Centre, Mumbai, India
| | - R. Ruhela
- Materials Processing Division, Bhabha Atomic Research Centre, Mumbai, India
| | - A. Das
- Materials Processing Division, Bhabha Atomic Research Centre, Mumbai, India
| | - M. Yadav
- Materials Processing Division, Bhabha Atomic Research Centre, Mumbai, India
| | - A. K. Singh
- Materials Processing Division, Bhabha Atomic Research Centre, Mumbai, India
| | - J. K. Chakravartty
- Materials Processing Division, Bhabha Atomic Research Centre, Mumbai, India
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64
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Nand N, Venu S, Yadav M, Deshmukh AR, Mittal R. Dyke-Davidoff-Masson Syndrome. J Assoc Physicians India 2016; 64:71. [PMID: 27734645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- N Nand
- Senior Professor and Unit Head
| | - S Venu
- Resident, Dept. of Medicine, Pt. B.D. Sharma Post Graduate Institute of Medical Sciences, Rohtak, Haryana
| | - M Yadav
- Resident, Dept. of Medicine, Pt. B.D. Sharma Post Graduate Institute of Medical Sciences, Rohtak, Haryana
| | - A R Deshmukh
- Resident, Dept. of Medicine, Pt. B.D. Sharma Post Graduate Institute of Medical Sciences, Rohtak, Haryana
| | - R Mittal
- Resident, Dept. of Medicine, Pt. B.D. Sharma Post Graduate Institute of Medical Sciences, Rohtak, Haryana
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Zweifler LE, Ao M, Yadav M, Kuss P, Narisawa S, Kolli TN, Wimer HF, Farquharson C, Somerman MJ, Millán JL, Foster BL. Role of PHOSPHO1 in Periodontal Development and Function. J Dent Res 2016; 95:742-51. [PMID: 27016531 DOI: 10.1177/0022034516640246] [Citation(s) in RCA: 18] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The tooth root and periodontal apparatus, including the acellular and cellular cementum, periodontal ligament (PDL), and alveolar bone, are critical for tooth function. Cementum and bone mineralization is regulated by factors including enzymes and extracellular matrix proteins that promote or inhibit hydroxyapatite crystal growth. Orphan Phosphatase 1 (Phospho1, PHOSPHO1) is a phosphatase expressed by chondrocytes, osteoblasts, and odontoblasts that functions in skeletal and dentin mineralization by initiating deposition of hydroxyapatite inside membrane-limited matrix vesicles. The role of PHOSPHO1 in periodontal formation remains unknown and we aimed to determine its functional importance in these tissues. We hypothesized that the enzyme would regulate proper mineralization of the periodontal apparatus. Spatiotemporal expression of PHOSPHO1 was mapped during periodontal development, and Phospho1(-/-) mice were analyzed using histology, immunohistochemistry, in situ hybridization, radiography, and micro-computed tomography. The Phospho1 gene and PHOSPHO1 protein were expressed by active alveolar bone osteoblasts and cementoblasts during cellular cementum formation. In Phospho1(-/-) mice, acellular cementum formation and mineralization were unaffected, whereas cellular cementum deposition increased although it displayed delayed mineralization and cementoid. Phospho1(-/-) mice featured disturbances in alveolar bone mineralization, shown by accumulation of unmineralized osteoid matrix and interglobular patterns of protein deposition. Parallel to other skeletal sites, deposition of mineral-regulating protein osteopontin (OPN) was increased in alveolar bone in Phospho1(-/-) mice. In contrast to the skeleton, genetic ablation of Spp1, the gene encoding OPN, did not ameliorate dentoalveolar defects in Phospho1(-/-) mice. Despite alveolar bone mineralization defects, periodontal attachment and function appeared undisturbed in Phospho1(-/-) mice, with normal PDL architecture and no evidence of bone loss over time. This study highlights the role of PHOSPHO1 in mineralization of alveolar bone and cellular cementum, further revealing that acellular cementum formation is not substantially regulated by PHOSPHO1 and likely does not rely on matrix vesicle-mediated initiation of mineralization.
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Affiliation(s)
- L E Zweifler
- Division of Biosciences, College of Dentistry, Ohio State University, Columbus, OH, USA
| | - M Ao
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - M Yadav
- Sanford Children's Health Research Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - P Kuss
- Sanford Children's Health Research Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - S Narisawa
- Sanford Children's Health Research Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - T N Kolli
- Division of Biosciences, College of Dentistry, Ohio State University, Columbus, OH, USA
| | - H F Wimer
- Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - C Farquharson
- Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian, UK
| | - M J Somerman
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - J L Millán
- Sanford Children's Health Research Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - B L Foster
- Division of Biosciences, College of Dentistry, Ohio State University, Columbus, OH, USA
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Yadav M, Sarkar TK, Obot IB. Carbohydrate compounds as green corrosion inhibitors: electrochemical, XPS, DFT and molecular dynamics simulation studies. RSC Adv 2016. [DOI: 10.1039/c6ra24026g] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Corrosion inhibition effect of 5,6-bis(2-(1H-benzo[d]imidazol-2-yl)hydrazono)hexane-1,2,3,4-tetraol (BIHT) and 5,6-bis(2-(1-methyl-1H-imidazol-2-yl)hydrazono)hexane-1,2,3,4-tetraol (MIHT) on N80 steel in 15% HCl was measured by electrochemical method.
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Affiliation(s)
- M. Yadav
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad 826004
- India
| | - T. K. Sarkar
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad 826004
- India
| | - I. B. Obot
- Center of Research Excellence in Corrosion
- King Fahd University of Petroleum and Minerals
- Dhahran
- Saudi Arabia
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Yadav M, Rangnekar S. Supervisory support and organizational citizenship behavior. Evidence-based HRM: a Global Forum for Empirical Scholarship 2015. [DOI: 10.1108/ebhrm-04-2014-0014] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Purpose
– The purpose of this paper is to investigate the role of participation in decision making (PDM) and job satisfaction (JS) in supervisory support and the organizational citizenship behavior (OCB) relationship.
Design/methodology/approach
– Two models with PDM and JS as mediators were tested on the supervisory support-OCB relationship. A sample of 198 Indian business executives was collected exclusively through management development programs (MDPs). To test the hypotheses in this research, correlation and regression analysis were both used. Furthermore, to test the mediation level, Baron and Kenny’s (1986) method was deployed.
Findings
– All variables in the study were found to be significantly related to each other. Both models were supported by the findings, suggesting that supervisory support promotes both PDM and JS. This, in turn, increases OCB in employees. PDM was found to be the better mediator within the relationship. Implications of these results are also discussed.
Research limitations/implications
– Self-reported responses could give biased results; peers should also have been included in the data gathering. Variables in the study cannot be analyzed in isolation. Hence control variables need to be included to arrive at more accurate and informative results.
Practical implications
– The findings contribute to better understanding of the supervisory support/OCB relationship, and the ways of improving this through PDM and JS. As an outcome of this research, organizations should aim to support, empower and involve their employees. Satisfying their needs will lead to them becoming more effective citizens within the organization. Businesses can harness the potential of OCB in employees by giving them a “voice” in decision making and by encouraging them to share ideas.
Originality/value
– The use of PDM and JS in this relationship is unprecedented. The establishment of PDM as a better mediator of the relationship is also unique. The study draws its strength from a multi-organizational sample and the use of MDPs to provide unbiased responses. Since the study is based on an Indian sample, it also adds to the growing literature of OCB from non-western economies.
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Yadav M, Kumar S, Tiwari N, Bahadur I, Ebenso E. Experimental and quantum chemical studies of synthesized triazine derivatives as an efficient corrosion inhibitor for N80 steel in acidic medium. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.09.019] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Yadav M, Sharma D, Sarkar T. Adsorption and corrosion inhibitive properties of synthesized hydrazine compounds on N80 steel/hydrochloric acid interface: Electrochemical and DFT studies. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.09.031] [Citation(s) in RCA: 11] [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] [Indexed: 10/22/2022]
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Yadav M, Sinha R, Sarkar T, Bahadur I, Ebenso E. Application of new isonicotinamides as a corrosion inhibitor on mild steel in acidic medium: Electrochemical, SEM, EDX, AFM and DFT investigations. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.09.047] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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71
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Yadav M, Kumar S, Sinha R, Bahadur I, Ebenso E. New pyrimidine derivatives as efficient organic inhibitors on mild steel corrosion in acidic medium: Electrochemical, SEM, EDX, AFM and DFT studies. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.06.063] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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72
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Nand N, Dsouza S, Batra N, Chauhan V, Yadav M. Dupuytren's Contracture Associated with Long-Standing Diabetes Mellitus. J Assoc Physicians India 2015; 63:65. [PMID: 27608694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- N Nand
- Senior Professor and Unit Head
| | - S Dsouza
- Resident, Dept. of Medicine, Pt. B.D. Sharma Post Graduate Institute of Medical Sciences, Rohtak, Haryana
| | - N Batra
- Resident, Dept. of Medicine, Pt. B.D. Sharma Post Graduate Institute of Medical Sciences, Rohtak, Haryana
| | - V Chauhan
- Resident, Dept. of Medicine, Pt. B.D. Sharma Post Graduate Institute of Medical Sciences, Rohtak, Haryana
| | - M Yadav
- Undergraduate, Department of Medicine, Government Medical College, Guru Nanak Dev Hospital, Amritsar, Punjab
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73
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Nand N, Aggarwal S, Yadav M, Dsouza S, Deshmukh AR. Families of Pseudohypoparathyroidism presenting as Seizure. J Assoc Physicians India 2015; 63:71-74. [PMID: 27608698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Pseudohypoparathyroidism (PHP) is a heterogeneous group of disorders characterized by variable insensitivity to parathyroid hormone. We describe two cases of 22 year male and 24 year female who have typical clinical features of Albright's hereditary osteodystrophy (AHO). Laboratory investigation revealed evidence of pseudohypoparathyroidism and skeletal survey showed shortening of the metacarpals and metatarsals.
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Affiliation(s)
- N Nand
- Senior Professor and Unit Head
| | | | - M Yadav
- Resident, Department of Medicine, Pt. B. D. Sharma Post Graduate Institute of Medical Sciences, Rohtak, Haryana
| | - S Dsouza
- Resident, Department of Medicine, Pt. B. D. Sharma Post Graduate Institute of Medical Sciences, Rohtak, Haryana
| | - A R Deshmukh
- Resident, Department of Medicine, Pt. B. D. Sharma Post Graduate Institute of Medical Sciences, Rohtak, Haryana
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Iyer N, Ruhela R, Vishwakarma P, Yadav M, Singh A, Chakravartty J. Sorption studies of uranium on novel imino diacetamide grafted styrene divinyl benzene polymeric resin. SEP SCI TECHNOL 2015. [DOI: 10.1080/01496395.2015.1064137] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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75
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Dorrance AM, Neviani P, Ferenchak GJ, Huang X, Nicolet D, Maharry KS, Ozer HG, Hoellarbauer P, Khalife J, Hill EB, Yadav M, Bolon BN, Lee RJ, Lee LJ, Croce CM, Garzon R, Caligiuri MA, Bloomfield CD, Marcucci G. Targeting leukemia stem cells in vivo with antagomiR-126 nanoparticles in acute myeloid leukemia. Leukemia 2015; 29:2143-53. [PMID: 26055302 PMCID: PMC4633325 DOI: 10.1038/leu.2015.139] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [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: 01/07/2015] [Revised: 04/15/2015] [Accepted: 05/06/2015] [Indexed: 12/31/2022]
Abstract
Current treatments for acute myeloid leukemia (AML) are designed to target rapidly dividing blast populations with limited success in eradicating the functionally distinct leukemia stem cell (LSC) population, which is postulated to be responsible for disease resistance and relapse. We have previously reported high miR-126 expression levels to be associated with a LSC-gene expression profile. Therefore, we hypothesized that miR-126 contributes to “stemness” and is a viable target for eliminating the LSC in AML. Here we first validate the clinical relevance of miR-126 expression in AML by showing that higher expression of this microRNA (miR) is associated with worse outcome in a large cohort of older (≥60 years) cytogenetically normal AML patients treated with conventional chemotherapy. We then show that miR-126 overexpression characterizes AML LSC-enriched cell subpopulations and contributes to LSC long-term maintenance and self-renewal. Finally, we demonstrate the feasibility of therapeutic targeting of miR-126 in LSCs with novel targeting nanoparticles (NP) containing antagomiR-126 resulting in in vivo reduction of LSCs likely by depletion of the quiescent cell subpopulation. Our findings suggest that by targeting a single miR, i.e., miR-126, it is possible to interfere with LSC activity, thereby opening potentially novel therapeutic approaches to treat AML patients.
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Affiliation(s)
- A M Dorrance
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Comprehensive Cancer Center, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - P Neviani
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Comprehensive Cancer Center, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - G J Ferenchak
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Comprehensive Cancer Center, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - X Huang
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Comprehensive Cancer Center, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Nanoscale Science and Engineering Center for Affordable Nanoengineering of Polymeric Biomedical Devices, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Department of Biomedical Informatics, Ohio State University, Columbus, OH, USA
| | - D Nicolet
- Comprehensive Cancer Center, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Alliance for Clinical Trials in Oncology Statistics and Data Center, Mayo Clinic, Rochester, MN, USA
| | - K S Maharry
- Comprehensive Cancer Center, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Alliance for Clinical Trials in Oncology Statistics and Data Center, Mayo Clinic, Rochester, MN, USA
| | - H G Ozer
- Department of Biomedical Informatics, Ohio State University, Columbus, OH, USA
| | - P Hoellarbauer
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Comprehensive Cancer Center, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - J Khalife
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Comprehensive Cancer Center, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - E B Hill
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Comprehensive Cancer Center, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - M Yadav
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Comprehensive Cancer Center, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - B N Bolon
- Comparative Pathology and Mouse Phenotyping Shared Resource, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - R J Lee
- Nanoscale Science and Engineering Center for Affordable Nanoengineering of Polymeric Biomedical Devices, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Department of Biomedical Informatics, Ohio State University, Columbus, OH, USA
| | - L J Lee
- Nanoscale Science and Engineering Center for Affordable Nanoengineering of Polymeric Biomedical Devices, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Department of Biomedical Informatics, Ohio State University, Columbus, OH, USA
| | - C M Croce
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Gehr Family Center for Leukemia Research, City of Hope, Duarte, CA, USA
| | - R Garzon
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Comprehensive Cancer Center, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Gehr Family Center for Leukemia Research, City of Hope, Duarte, CA, USA
| | - M A Caligiuri
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Comprehensive Cancer Center, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - C D Bloomfield
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA.,Comprehensive Cancer Center, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - G Marcucci
- Gehr Family Center for Leukemia Research, City of Hope, Duarte, CA, USA
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76
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Nagarjuna D, Mittal G, Dhanda RS, Verma PK, Gaind R, Yadav M. Faecal Escherichia coli isolates show potential to cause endogenous infection in patients admitted to the ICU in a tertiary care hospital. New Microbes New Infect 2015; 7:57-66. [PMID: 26257914 PMCID: PMC4522595 DOI: 10.1016/j.nmni.2015.05.006] [Citation(s) in RCA: 18] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 05/08/2015] [Accepted: 05/26/2015] [Indexed: 12/05/2022] Open
Abstract
Nosocomial infections are acquired during hospital treatment or in a hospital environment. One such infecting agent, Escherichia coli, harbours many virulence genes that enable it to become pathogenic, causing damage to the host. The mechanism of the E. coli virulence factors provenance to cause infection in host environments is not clearly elucidated. We investigated the virulence and pathogenicity of E. coli affected by the host environment. For this, blood (n = 78) and faecal (n = 83) E. coli isolates were collected from patients with and without sepsis, respectively, who had been admitted to the intensive care unit. The E. coli genomic DNA was isolated; the phylogenetic grouping was conducted by triplex PCR. The occurrence of nine virulence genes among the all the isolates was confirmed by gene-specific PCR. The prevalence of E. coli in blood isolates was more in phylogenetic groups B2 and D compared to groups A and B1. However, in faecal isolates, there was no significant difference. The prevalence of adhesin and toxin (papG, sfa, afa, cnf1, hlyA) genes was higher in blood compared to faecal E. coli isolates. However, the prevalence of aer, traT and PAI was similar as well as higher among both of these groups. These observations indicate a role of external environment (hospital setting) on host susceptibility (development of infection) in the faecal E. coli isolates, thereby making the patient prone to a sepsis condition.
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Affiliation(s)
- D Nagarjuna
- Dr. B. R. Ambedkar Centre for Biomedical Research, University of Delhi, Vardhman Mahavir Medical College and Safdarjung Hospital, Delhi, India
| | - G Mittal
- Department of Microbiology, Vardhman Mahavir Medical College and Safdarjung Hospital, Delhi, India
| | - R S Dhanda
- Department of Translational and Regenerative Medicine, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - P K Verma
- Department of Anesthesia, Vardhman Mahavir Medical College and Safdarjung Hospital, Delhi, India
| | - R Gaind
- Department of Microbiology, Vardhman Mahavir Medical College and Safdarjung Hospital, Delhi, India
| | - M Yadav
- Dr. B. R. Ambedkar Centre for Biomedical Research, University of Delhi, Vardhman Mahavir Medical College and Safdarjung Hospital, Delhi, India
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77
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Nand N, Dsouza S, Batra N, Chauhan V, Yadav M. Intravenous Pantoprazole-Induced Near Fatality. J Assoc Physicians India 2015; 63:96. [PMID: 26710417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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78
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Nagarjuna D, Dhanda RS, Gaind R, Yadav M. tcpC as a prospective new virulence marker in blood Escherichia coli isolates from sepsis patients admitted to the intensive care unit. New Microbes New Infect 2015; 7:28-30. [PMID: 26137310 PMCID: PMC4484543 DOI: 10.1016/j.nmni.2015.05.002] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 04/18/2015] [Accepted: 05/06/2015] [Indexed: 01/15/2023] Open
Abstract
The prevalence of the tcpC in the blood Escherichia coli isolates collected from the sepsis patients admitted to the intensive care unit was investigated for the first time. The blood and faecal samples were collected from sepsis and nonsepsis patients, respectively. The prevalence of the tcpC and phylogroups was confirmed by gene-specific PCR. The occurrence of the tcpC in the blood E. coli isolates from sepsis patients was significantly higher than the faecal isolates. The higher prevalence of blood E. coli isolates among the pathogenic groups (B2, D) compared to the commensal groups (A, B1) suggests tcpC as a prospective new virulence marker for sepsis.
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Affiliation(s)
- D Nagarjuna
- Dr. B. R. Ambedkar Centre for Biomedical Research (ACBR), University of Delhi, India
| | - R S Dhanda
- Department of Translational and Regenerative medicine, Post Graduate Institute of Medical Education & Research (PGIMER), Chandigarh, India
| | - R Gaind
- Department of Microbiology, Vardhman Mahavir Medical College (VMMC) and Safdarjung Hospital, Delhi, India
| | - M Yadav
- Dr. B. R. Ambedkar Centre for Biomedical Research (ACBR), University of Delhi, India
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79
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Yadav S, Sisodia N, Jha V, Yadav M. Dental exarticulation. Niger J Clin Pract 2015; 18:426-8. [PMID: 25772931 DOI: 10.4103/1119-3077.151804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Tooth exarticulation or avulsion refers to the complete displacement of the tooth out of its socket. It is a complex injury, requiring immediate intervention for optimal results. Literature indicates that prolonged dry time and improper handling may be associated with increased risk of failure. Immediate replantation of the tooth allows for immediate restoration of esthetics and phonetics. This case report presents the management of an avulsed mature tooth in a young boy, with a two-year follow-up, which had been preserved in milk after around 15-20 minutes of injury and transplanted after two hours at a dental hospital. Timely modified endodontic therapy prevented subsequent inflammatory root resorption.
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Affiliation(s)
- S Yadav
- Department of Dentistry, Dr RML Hospital, New Delhi, India
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80
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Yadav M, Sinha RR, Kumar S, Sarkar TK. Corrosion inhibition effect of spiropyrimidinethiones on mild steel in 15% HCl solution: insight from electrochemical and quantum studies. RSC Adv 2015. [DOI: 10.1039/c5ra14406j] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The effect of synthesized spiropyrimidinethiones on the corrosion of mild steel in 15% HCl solution was investigated by using weight loss and electrochemical methods.
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Affiliation(s)
- M. Yadav
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad 826004
- India
| | - R. R. Sinha
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad 826004
- India
| | - Sumit Kumar
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad 826004
- India
| | - T. K. Sarkar
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad 826004
- India
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81
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Abstract
Innate and adaptive immunity play a significant role in urogenital infections. Innate immunity is provided by the epithelial cells and mucus lining along with acidic pH, which forms a strong physical barrier against the pathogens in female reproductive tract. Cells of innate immune system, antimicrobial peptides, cytokines, chemokines and adaptive immunity in the reproductive tract are evolved during infection, and a pro-inflammatory response is generated to fight against the invading pathogen Trichomonas vaginalis, a primary urogenital protozoa, the etiological agent of human trichomoniasis, a curable sexually transmitted infection. The involvement of the urogenital tract by other protozoal infections such as P. falciparum, Trypanosoma, Leishmania, Toxoplasma, Entamoeba histolytica and Acanthamoeba infection is rarely reported. Trichomonas induce pro-inflammatory and immunosuppressive responses in infected subjects. Multifactorial pathogenic mechanisms including parasite adherence, cysteine proteases, lipophosphoglycan, free radical, cytokine generation and Toll-like receptors appear to interplay with the induction of local and systemic immune responses that ultimately determine the outcome of the infection. However, the involvement of urogenital pathogen-specific immune mechanisms and effect of normal local resident flora on the outcome (symptomatic vs. asymptomatic) of infection are poorly understood. Moreover, immune interactions in trichomoniasis subjects co-infected with bacterial and viral pathogens need to be elucidated.
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Affiliation(s)
- N Malla
- Department of Medical Parasitology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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82
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Yadav M, Trivedi V, Upadhyay V, Shah G, Shah H, Upadhyay A, Goswami S, Shrivastav PS. Sensitive, selective and rapid determination of lafutidine in human plasma by solid phase extraction-liquid chromatography-tandem mass spectrometry. J Anal Chem 2014. [DOI: 10.1134/s1061934814050116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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83
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Ricardo-Carter C, Favila M, Polando RE, Cotton RN, Bogard Horner K, Condon D, Ballhorn W, Whitcomb JP, Yadav M, Geister RL, Schorey JS, McDowell MA. Leishmania major inhibits IL-12 in macrophages by signalling through CR3 (CD11b/CD18) and down-regulation of ETS-mediated transcription. Parasite Immunol 2014; 35:409-20. [PMID: 23834512 DOI: 10.1111/pim.12049] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [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: 03/26/2013] [Accepted: 06/03/2013] [Indexed: 01/17/2023]
Abstract
Leishmania major is an aetiological agent of cutaneous leishmaniasis. The parasite primarily infects immune sentinel cells, specifically macrophages and dendritic cells, in the mammalian host. Infection is receptor mediated and is known to involve parasite binding to cell surface protein complement receptor 3 (CR3, Mac-1, CD11b/CD18). Engagement of CR3 by various ligands inhibits production of interleukin-12 (IL-12), the cytokine that drives antileishmanial T helper 1-type immune responses. Likewise, L. major infection inhibits IL-12 production and activation of host macrophages. Our data indicate that in the absence of CR3, L. major-infected bone marrow-derived macrophages produce more IL-12 and nitric oxide compared with WT cells upon lipopolysaccharide (LPS) stimulation. We therefore investigated multiple signalling pathways by which L. major may inhibit IL-12 transcription through CR3 ligation. We demonstrate that L. major infection does not elicit significant NFκB p65, MAPK, IRF-1 or IRF-8 activation in WT or CD11b-deficient macrophages. Furthermore, infection neither inhibits LPS-induced MAPK or NFκB activation nor blocks IFN-γ-activated IRF-1 and IRF-8. ETS-mediated transcription, however, is inhibited by L. major infection independently of CR3. Our data indicate that L. major-mediated inhibition of IL-12 occurs through CR3 engagement; however, the mechanism of inhibition is independent of NFκB, MAPK, IRF and ETS.
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Affiliation(s)
- C Ricardo-Carter
- Eck Institute for Global Health, Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
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84
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Khan MP, Mishra JS, Sharan K, Yadav M, Singh AK, Srivastava A, Kumar S, Bhaduaria S, Maurya R, Sanyal S, Chattopadhyay N. A novel flavonoid C-glucoside from Ulmus wallichiana preserves bone mineral density, microarchitecture and biomechanical properties in the presence of glucocorticoid by promoting osteoblast survival: a comparative study with human parathyroid hormone. Phytomedicine 2013; 20:1256-66. [PMID: 23928508 DOI: 10.1016/j.phymed.2013.07.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [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: 02/23/2013] [Revised: 05/31/2013] [Accepted: 07/09/2013] [Indexed: 05/23/2023]
Abstract
PURPOSE 6-C-β-D-glucopyranosyl-(2S,3S)-(+)-5,7,3',4'-tetrahydroxydihydroflavonol (GTDF) is a novel compound isolated from Ulmus wallichiana, reported to have bone anabolic action in ovariectomized rats. Here, we studied the effect of GTDF in glucocorticoid (GC)-induced bone loss and its mode of action. METHODS Osteoblasts were cultured from rat calvaria or bone marrow to study apoptosis and differentiation by dexamethasone (Dex), methylprednisolone (MP), GTDF, quercetin and rutin. Female Sprague Dawley rats were treated with Dex or MP with or without GTDF or PTH. Efficacy was evaluated by bone microarchitecture using microcomputed tomography, determination of new bone formation by fluorescent labeling of bone and osteoblast apoptosis by co-labeling bone sections with Runx-2 and TUNEL. Serum osteocalcin was determined by ELISA. RESULTS GTDF preserved trabecular and cortical bones in the presence of Dex and MP and mitigated the MP-mediated suppression of serum osteocalcin. Co-administration of GTDF to MP rats increased mineral apposition, bone formation rates, bone biomechanical strength, reduced osteoblast apoptosis and increased osteogenic differentiation of bone marrow stromal cells compared to MP group, suggesting in vivo osteogenic effect of GTDF. These effects of GTDF were to a great extent comparable to PTH. GTDF prevented GC-induced osteoblast apoptosis by inhibiting p53 expression and acetylation, and activation of AKT but did not influence transactivation of GC receptor (GR). CONCLUSIONS GTDF protects against GC-induced bone loss by promoting osteoblast survival through p53 inhibition and activation of AKT pathways but not as a GR antagonist. GTDF has the potential in the management of GC-induced osteopenia.
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Affiliation(s)
- M P Khan
- Division of Endocrinology, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226021, India; Center for Research on Anabolic Skeletal Targets in Health and Illness (ASTHI), CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226021, India; Center for Drug Discovery and Development in Reproductive Health (CDDDRH), CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226021, India
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85
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Pandey P, Ansari AA, Moda P, Yadav M. Enamel microabrasion for aesthetic management of dental fluorosis. Case Reports 2013; 2013:bcr-2013-010517. [DOI: 10.1136/bcr-2013-010517] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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86
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Ranjan P, Kumari A, Das R, Gupta L, Singh SK, Yadav M. Evaluation of clinical features scoring system as screening tool for influenza A (H1N1) in epidemic situations. J Postgrad Med 2013; 58:265-9. [PMID: 23298921 DOI: 10.4103/0022-3859.105446] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Influenza A (H1N1) hit the headlines in recent times and created mass hysteria and general panic. The high cost and non-availability of diagnostic laboratory tests for swine flu, especially in the developing countries underlines the need of having a cheaper, easily available, yet reasonably accurate screening test. AIMS This study was carried out to develop a clinical feature-based scoring system (CFSS) for influenza A (H1N1) and to evaluate its suitability as a screening tool when large numbers of influenza-like illness cases are suspect. SETTINGS AND DESIGN Clinical-record based study, carried out retrospectively in post-pandemic period on subject's case-sheets who had been quarantined at IG International Airport's quarantine center at Delhi. MATERIALS AND METHODS Clinical scoring of each suspected case was done by studying their case record sheet and compared with the results of RT-PCR. RT-PCR was used to confirm the diagnosis (Gold Standard). STATISTICAL ANALYSIS We calculated sensitivity, specificity, positive and negative predictive values of the clinical feature-based scoring system (the proposed new screening tool) at different cut-off values. The most discriminant cut-off value was determined by plotting the ROC curve. RESULTS Of the 638 suspected cases, 127 (20%) were confirmed to have H1N1 by RT-PCR examination. On the basis of ROC, the most discriminant clinical feature score for diagnosing Influenza A was found to be 7, which yielded sensitivity, specificity, positive, and negative predictive values of 86%, 88%, 64%, and 96%, respectively. CONCLUSION The clinical features scoring system (CFSS) can be used as a valid and cost-effective tool for screening swine flu (influenza A (H1N1)) cases from large number of influenza-like illness suspects.
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Affiliation(s)
- P Ranjan
- Department of Medicine, Lady Hardinge Medical College and Associated Hospitals, New Delhi, India
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87
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Yadav M, Singh SK, Yadava S. Purification, characterisation and coal depolymerisation activity of lignin peroxidase from Lenzitus betulina MTCC-1183. Prikl Biokhim Mikrobiol 2012; 48:646-652. [PMID: 23330392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Lignin peroxidase from the culture filtrate of Lenzitus betulina MTCC-1183 has been purified to homogeneity using concentration by ultrafiltration and anion exchange chromatography on DEAE cellulose. The molecular weight of the purified lignin peroxidase using SDS-PAGE analysis was 43 kDa. Specific activity of the enzyme was 29.58 IU/mg. The K(m) values for veratryl alcohol and H2O2 for the purified enzyme were 54 microM and 81 microM, respectively. The k(cat) value of the purified enzyme was 2.3 s(-1) using 3,4-dimethoxybenzyl alcohol as the substrate. The optimal conditions for the lignin peroxidase assay were detected at pH 2.4 and 22 degrees C. Thermal stability of the purified enzyme has also been studied and its activation energy for deactivation was 287 kJ/mol. The purified lignin peroxidase depolymerised humic acid in presence of H2O2. Depolymerisation of coal by the L. betulina MTCC-1183 has been demonstrated using humic acid as a model of coal.
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Affiliation(s)
- M Yadav
- D.D.U. Gorakhpur University, Gorakhpur 273 009, India.
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Rautela BS, Yadav M, Bourai AA, Joshi V, Gusain GS, Ramola RC. Study of natural radionuclide and absorbed gamma dose in Ukhimath area of Garhwal Himalaya, India. Radiat Prot Dosimetry 2012; 152:58-61. [PMID: 22908360 DOI: 10.1093/rpd/ncs187] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Natural radiation is the largest contributor to the collective radiation dose of the world population. It is widely distributed in different geological formations such as soil, rocks, air and groundwater. In the present investigation, (226)Ra, (232)Th and (40)K were measured in soil samples of the Ukhimath region of Garhwal Himalaya, India using NaI(Tl) gamma-ray spectrometry. The activity concentrations of naturally occurring radionuclides (226)Ra, (232)Th and (40)K were found to vary from 38.4 ± 6.1 to 141.7 ± 11.9 Bq kg(-1) with an average of 80.5 Bq kg(-1), 57.0 ± 7.5 to 155.9 ± 12.4 Bq kg(-1) with an average of 118.9 Bq kg(-1) and 9.0 ± 3.0 to 672.8 ± 25.9 Bq kg(-1) with an average of 341 Bq kg(-1), respectively. The total absorbed gamma dose rate varies from 70.4 to 169.1 nGy h(-1) with an average of 123.4 nGy h(-1). This study is important to generate a baseline data of radiation exposure in the area. Health hazard effects due to natural radiation exposure are discussed in details.
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Affiliation(s)
- B S Rautela
- Department of Physics, HNB Garhwal University, Badshahi Thaul Campus, Tehri Garhwal 249199, India
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Yadav M, Singh SK, Yadava S. Purification, characterisation and coal depolymerisation activity of lignin peroxidase from Lenzitus betulina MTCC-1183. APPL BIOCHEM MICRO+ 2012. [DOI: 10.1134/s0003683812050146] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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90
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Yadav M, Joshi P, Koirala P, Ghimire S, Safi S, Shrestha I, Ojha N, Amatya A, Gurung G, Rana A. Post Caesarean Caecal Perforation with Fecal Peritonitis. Nepal j obstet gynaecol 2012. [DOI: 10.3126/njog.v6i2.6762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
NJOG 2011 Nov-Dec; 6 (2): 58-59 DOI: http://dx.doi.org/10.3126/njog.v6i2.6762
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Nagpal R, Behare PV, Kumar M, Mohania D, Yadav M, Jain S, Menon S, Parkash O, Marotta F, Minelli E, Henry CJK, Yadav H. Milk, milk products, and disease free health: an updated overview. Crit Rev Food Sci Nutr 2012; 52:321-33. [PMID: 22332596 DOI: 10.1080/10408398.2010.500231] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The cow and its milk have been held sacred in the world since the dawn of human civilization. Indian ancient Vedic texts describe the virtues of milk and dairy products, as is authenticated by modern scientific principles and proofs. Therefore, milk has been considered as one of the most natural and highly nutritive part of a daily balanced diet. Currently, the integration of advanced scientific knowledge with traditional information is gaining incredible momentum toward developing the concept of potential therapeutic foods. Furthermore, new advances toward understanding the therapeutic roles of milk and milk products have also given a new impetus for unraveling the age old secrets of milk. At present, the best-known examples of therapeutic foods are fermented milk products containing health promoting probiotic bacteria. In the present article, we have tried to review the various aspects of the therapeutic nature of milk and fermented dairy products in a highly up-dated manner, and offer an in-depth insight into the development of targeted therapeutic future foods as per the requirements of consumers.
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Affiliation(s)
- R Nagpal
- Department of Biotechnology, School of Technology and Science, Lovely Professional University, Phagwara, Punjab, India
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93
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Mehta P, Kalyanpur T, Narsinghpura K, Krishnan R, Raja D, Yadav M, Cherian M. Outcomes of Endovascular Coiling in Patients with Intracranial Aneurysms Presenting with Poor Clinical and SAH Grade. Neuroradiol J 2011; 24:669-76. [DOI: 10.1177/197140091102400502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2010] [Accepted: 01/23/2011] [Indexed: 11/16/2022] Open
Abstract
Although the treatment of intracranial aneurysms has made significant advances, prediction of outcomes in poor grades has always been difficult. We present our findings of patients in poor clinical and SAH grade treated with endovascular coiling. We aimed to evaluate the clinical outcomes in patients presenting with poorer neurological and SAH grades treated by endovascular techniques. Of 190 patients who presented with SAH over a period of nine years, 34 were of poorer clinical grade (Hunt & Hess Grades 4 and 5), of whom 30 presented with H&H grade 4 and four with grade 5. 44.1% of the 34 patients belonged to Fischer grade 4. We assessed the technical success and final outcomes based on the Glasgow outcome scale. Of the 30 patients with grade 4, 81.4% had a good outcome. Two out of four patients with grade 5 had a poor outcome. 82.5% of the patients with Fischer grade 4 had a good outcome. None of the poor outcomes were procedure-related. Endovascular treatment with its higher rates of technical success, lower complication rates and better outcomes should be recommended as the treatment of choice in patients with intracranial aneurysms even in patients with poorer clinical and SAH grades.
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Affiliation(s)
- P. Mehta
- Department of Radiodiagnosis, Kovai Medical Center and Hospital; Coimbatore, Tamil Nadu, India
| | - T. Kalyanpur
- Department of Radiodiagnosis, Kovai Medical Center and Hospital; Coimbatore, Tamil Nadu, India
| | - K.S. Narsinghpura
- Department of Radiodiagnosis, Kovai Medical Center and Hospital; Coimbatore, Tamil Nadu, India
| | - R. Krishnan
- Department of Radiodiagnosis, Kovai Medical Center and Hospital; Coimbatore, Tamil Nadu, India
| | - D. Raja
- Department of Radiodiagnosis, Kovai Medical Center and Hospital; Coimbatore, Tamil Nadu, India
| | - M. Yadav
- Department of Radiodiagnosis, Kovai Medical Center and Hospital; Coimbatore, Tamil Nadu, India
| | - M. Cherian
- Department of Radiodiagnosis, Kovai Medical Center and Hospital; Coimbatore, Tamil Nadu, India
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Sharma JK, Yadav M, Singh NP, Yadav KDS. Purification and characterisation of lignin peroxidase from Pycnoporus sanguineus MTCC-137. APPL BIOCHEM MICRO+ 2011. [DOI: 10.1134/s0003683811050139] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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95
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Sharma JK, Yadav M, Singh NP, Yadav KDS. Purification and characterisation of lignin peroxidase from Pycnoporus sanguineus MTCC-137. Prikl Biokhim Mikrobiol 2011; 47:584-589. [PMID: 22232901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Extracellular secretion of lignin peroxidase from Pycnoporus sanguineus MTCC-137 in the liquid culture growth medium amended with lignin containing natural sources has been shown. The maximum secretion of lignin peroxidase has been found in the presence of saw dust. The enzyme has been purified to homogeneity from the culture filtrate of the fungus using ultrafiltration and anion exchange chromatography on DEAE-cellulose. The purified lignin peroxidase gave a single protein band in sodium dodecylsulphate polyacrylamide gel electrophoresis corresponding to the molecular mass 40 kDa. The K(m)(, kcat) and k(cat)/K(m) values of the enzyme using veratryl alcohol and H2O2 as the substrate were 61 microM, 2.13 s(-1), 3.5 x 10(4) M(-1) s(-1) and 71 microM, 2.13 s(-1), 3.0 x 10(4) M(-1) s(-1) respectively at the optimum pH of 2.5. The temperature optimum of the enzyme was 25 degrees C.
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Affiliation(s)
- J K Sharma
- Department of Chemistry, Udai Pratap College, Varansi 221002, India
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Yadav M, Singh SK, Sharma JK, Yadav KDS. Oxidation of polyaromatic hydrocarbons in systems containing water miscible organic solvents by the lignin peroxidase of Gleophyllum striatum MTCC-1117. Environ Technol 2011; 32:1287-1294. [PMID: 21970171 DOI: 10.1080/09593330.2010.535177] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Lignin peroxidase has been purified to homogeneity using a process of concentration by ultrafiltration and anion exchange chromatography on diethylaminoethyl (DEAE) cellulose from the liquid culture filtrate of the brown rot fungi Gleophyllum striatum MTCC-1117. The molecular mass of the purified enzyme is 43 kDa as determined by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) analysis. The K(m) values for the enzyme using veratryl alcohol, hydrogen peroxide and n-propanol were 66 microM, 82 microM and 476 microM, respectively. The pH and temperature optima of the enzyme were 2.8 and 25 degrees C, respectively. The enzyme is completely inhibited by 20% of the water miscible organic solvents acetone dioxane, diethylether, acetonitrile and dimethylformamide. The lignin peroxidase oxidizes polycyclic aromatic hydrocarbons pyrene, acenaphthene, anthracene, dibenothiophene and 9-methyl anthracene.
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Affiliation(s)
- M Yadav
- Department of Chemistry, DDU Gorakhpur University, Gorakhpur 273009, India.
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Yadav M, Patel C, Patel M, Mishra T, Singhal P, Shrivastav PS, Yadav M, Baxi GA. Development and Validation of a Sensitive and Rapid Method to Determine Naratriptan in Human Plasma by LC-ESI-MS-MS: Application to a Bioequivalence Study. J Chromatogr Sci 2011; 49:101-7. [DOI: 10.1093/chrsci/49.2.101] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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98
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Yadav M, Rao R, Kurani H, Rathod J, Patel R, Singhal P, Shrivastav PS. Validated Ultra-Performance Liquid Chromatography Tandem Mass Spectrometry Method for the Determination of Pramipexole in Human Plasma. J Chromatogr Sci 2010; 48:811-8. [DOI: 10.1093/chromsci/48.10.811] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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99
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Yadav M, Singhal P, Goswami S, Pande UC, Sanyal M, Shrivastav PS. Selective Determination of Antiretroviral Agents Tenofovir, Emtricitabine, and Lamivudine in Human Plasma by a LC-MS-MS Method for a Bioequivalence Study in Healthy Indian Subjects. J Chromatogr Sci 2010; 48:704-13. [DOI: 10.1093/chromsci/48.9.704] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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100
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Yadav M, Gupta A, Singhal P, Shrivastav PS. Development and Validation of a Selective and Rapid LC-MS-MS Method for the Quantification of Abacavir in Human Plasma. J Chromatogr Sci 2010; 48:654-62. [DOI: 10.1093/chromsci/48.8.654] [Citation(s) in RCA: 7] [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: 11/13/2022]
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