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Sinha BK, Kumar D, Meher P, Kumari S, Prakash K, Gourinath S, Kashav T. Biophysical and functional characterization of N-terminal domain of Human Interferon Regulatory Factor 6. Mol Biol Rep 2024; 51:380. [PMID: 38429584 DOI: 10.1007/s11033-024-09205-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 01/02/2024] [Indexed: 03/03/2024]
Abstract
BACKGROUND Interferon regulatory factor 6 (IRF6) has a key function in palate fusion during palatogenesis during embryonic development, and mutations in IRF6 cause orofacial clefting disorders. METHODS AND RESULTS The in silico analysis of IRF6 is done to obtain leads for the domain boundaries and subsequently the sub-cloning of the N-terminal domain of IRF6 into the pGEX-2TK expression vector and successfully optimized the overexpression and purification of recombinant glutathione S-transferase-fused NTD-IRF6 protein under native conditions. After cleavage of the GST tag, NTD-IRF6 was subjected to protein folding studies employing Circular Dichroism and Intrinsic fluorescence spectroscopy at variable pH, temperature, and denaturant. CD studies showed predominantly alpha-helical content and the highest stability of NTD-IRF6 at pH 9.0. A comparison of native and renatured protein depicts loss in the secondary structural content. Intrinsic fluorescence and quenching studies have identified that tryptophan residues are majorly present in the buried areas of the protein and a small fraction was on or near the protein surface. Upon the protein unfolding with a higher concentration of denaturant urea, the peak of fluorescence intensity decreased and red shifted, confirming that tryptophan residues are majorly present in a more polar environment. While regulating IFNβ gene expression during viral infection, the N-terminal domain binds to the promoter region of Virus Response Element-Interferon beta (VRE-IFNβ). Along with the protein folding analysis, this study also aimed to identify the DNA-binding activity and determine the binding affinities of NTD-IRF6 with the VRE-IFNβ promoter region. The protein-DNA interaction is specific as demonstrated by gel retardation assay and the kinetics of molecular interactions as quantified by Biolayer Interferometry showed a strong affinity with an affinity constant (KD) value of 7.96 × 10-10 M. CONCLUSION NTD-IRF6 consists of a mix of α-helix and β-sheets that show temperature-dependent cooperative unfolding between 40 °C and 55 °C. Urea-induced unfolding shows moderate tolerance to urea as the mid-transition concentration of urea (Cm) is 3.2 M. The tryptophan residues are majorly buried as depicted by fluorescence quenching studies. NTD-IRF6 has a specific and high affinity toward the promoter region of VRE-IFNβ.
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Affiliation(s)
- Binita Kumari Sinha
- Department of Life Science, School of Earth, Biological and Environmental Sciences, Central University of South Bihar, Gaya, Bihar, 824236, India
| | - Devbrat Kumar
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Priyabrata Meher
- Department of Life Science, School of Earth, Biological and Environmental Sciences, Central University of South Bihar, Gaya, Bihar, 824236, India
| | - Shilpi Kumari
- Department of Biochemical Engineering and Biotechnology, IIT Delhi, New Delhi, India
| | - Krishna Prakash
- Department of Biotechnology, School of Earth, Biological and Environmental Sciences, Central University of South Bihar, Gaya, Bihar, India
| | | | - Tara Kashav
- Department of Life Science, School of Earth, Biological and Environmental Sciences, Central University of South Bihar, Gaya, Bihar, 824236, India.
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Saha B, Ansari R, Prakash K, De U. Effortless residual adhesive removal: A simple method. Trop Doct 2023; 53:492-493. [PMID: 37203176 DOI: 10.1177/00494755231177093] [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] [Indexed: 05/20/2023]
Abstract
The cheaper surgical dressings often leave residual adhesive, which can be unsightly and uncomfortable. We describe a simple and cost-effective procedure for removing adhesive residue using micropore tape. This technique can be easily performed by anyone, including the patients themselves.
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Affiliation(s)
- Bipasa Saha
- Junior Residents, Department of General Surgery, NRS Medical College and Hospital, Kolkata, India
| | - Reyaz Ansari
- Junior Residents, Department of General Surgery, NRS Medical College and Hospital, Kolkata, India
| | - Krishna Prakash
- Junior Residents, Department of General Surgery, NRS Medical College and Hospital, Kolkata, India
| | - Utpal De
- Professor, Department of General Surgery, NRS Medical College and Hospital, Kolkata, India
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Bansal S, Prakash K, Sharma K, Sardana N, Kumar S, Gupta N, Singh AK. A highly efficient bilayer graphene/ZnO/silicon nanowire based heterojunction photodetector with broadband spectral response. Nanotechnology 2020; 31:405205. [PMID: 32554900 DOI: 10.1088/1361-6528/ab9da8] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This paper presents three self-powered photodetectors namely, p+-bilayer graphene (BLG)/n+-ZnO nanowires (NWs), p+-BLG/n+-Si NWs/p--Si and p+-BLG/n+-ZnO NWs/p--Si. The Silvaco Atlas TCAD software is utilized to characterize the optoelectronic properties of all the devices and is validated by analytical modeling. The proposed dual-junction photodetectors cover broadband spectral response varying from ultraviolet to near-infrared wavelengths. The dual-heterojunction broadband photodetector exhibits photocurrent switching with the rise and fall time of 1.48 and 1.27 ns, respectively. At -0.5 V bias, the highest external quantum efficiency, photocurrent responsivity, specific detectivity, and the lowest noise equivalent power of 71%, 0.28 A W-1, 4.2 × 1012 cmHz1/2 W-1, and 2.59 × 10-17 W, respectively, are found for the dual-heterojunction device with a wavelength of 480 nm at 300 K. The proposed nanowires based photodetectors offer great potential to be utilized as next-generation optoelectronic devices.
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Affiliation(s)
- Shonak Bansal
- Department of Electronics and Communication Engineering, Punjab Engineering College (Deemed to be University), Sector-12, Chandigarh, India
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Rohini MR, Sankaran M, Rajkumar S, Prakash K, Gaikwad A, Chaudhury R, Malik SK. Morphological characterization and analysis of genetic diversity and population structure in Citrus × jambhiri Lush. using SSR markers. Genet Resour Crop Evol 2020; 67:1259-1275. [DOI: 10.1007/s10722-020-00909-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 02/17/2020] [Indexed: 07/19/2023]
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Prakash K, Bunce N, Anderson L, He T, Tome M, Papadakis M, Kaski JC, Sharma S. 554Ethnic differences in the phenotypic expression of HCM on CMR. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez125.005] [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: 11/13/2022] Open
Affiliation(s)
- K Prakash
- St George"s University of London, London, United Kingdom of Great Britain & Northern Ireland
| | - N Bunce
- St George"s University of London, London, United Kingdom of Great Britain & Northern Ireland
| | - L Anderson
- St George"s University of London, London, United Kingdom of Great Britain & Northern Ireland
| | - T He
- St George"s University of London, London, United Kingdom of Great Britain & Northern Ireland
| | - M Tome
- St George"s University of London, London, United Kingdom of Great Britain & Northern Ireland
| | - M Papadakis
- St George"s University of London, London, United Kingdom of Great Britain & Northern Ireland
| | - J C Kaski
- St George"s University of London, London, United Kingdom of Great Britain & Northern Ireland
| | - S Sharma
- St George"s University of London, London, United Kingdom of Great Britain & Northern Ireland
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Abstract
CONTEXT Virtual Microscopy. AIM The aim of this study was to demonstrate, as a proof of concept, the integration of a Foldscope, along with a smartphone and screen mirroring devices, into the regular academic teaching program for use with all types of regular slides for economical virtual microscopy. SETTING DESIGN & METHODS For the purpose of this demonstration, a microscopic slide of a ground section of a tooth, a smartphone (iPhone6), a Foldscope and an Apple TV module were chosen to demonstrate the integration of a low-cost unbreakable microscope along with a smartphone to facilitate immediate viewing, capture, sharing and even projection of the image by screen mirroring, if required, in a classroom setting. CONCLUSION The Foldscope microscope (Foldscope Instruments, Palo Alto, CA, USA) invented by Manu Prakash is an extremely economical, Origami style, fold to assemble microscope available from popular online retailers at approximately Rupees 500 aimed at simplifying and enabling diagnostics and education worldwide. The Foldscope, integrated with a smartphone, allows for easy screen casting thus proving invaluable as an educational tool by creating an effortless bridge between analogue input and digital output, facilitating instant digitization of slides for viewing, display, communication and storage. This article demonstrates the use of the Foldscope for virtual microscopy in a classroom scenario, by employing the screen mirroring capabilities of a smartphone.
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Affiliation(s)
- Ram Prakash
- Professor, Department of Prosthodontics, Anil Neerukonda Institute of Dental Sciences, Visakhapatnam, Andhra Pradesh, India
| | - Krishna Prakash
- Undergraduate Student, Anil Neerukonda Institute of Dental Sciences, Visakhapatnam, Andhra Pradesh, India
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Prakash R, Prakash K. Fabricating a low-cost autoclavable throat screen from a steamer mat. J Prosthet Dent 2019; 121:544-545. [DOI: 10.1016/j.prosdent.2018.06.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 06/18/2018] [Accepted: 06/19/2018] [Indexed: 11/26/2022]
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Prakash K, Kumar JV, Latha P, Kumar PS, Karuthapandian S. Fruitful fabrication of CDs on GO/g-C3N4 sheets layers: A carbon amalgamation for the remediation of carcinogenic pollutants. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.10.046] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Satyapal GK, Mishra SK, Srivastava A, Ranjan RK, Prakash K, Haque R, Kumar N. Possible bioremediation of arsenic toxicity by isolating indigenous bacteria from the middle Gangetic plain of Bihar, India. ACTA ACUST UNITED AC 2018. [PMID: 29541605 PMCID: PMC5849785 DOI: 10.1016/j.btre.2018.02.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [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] [Indexed: 01/19/2023]
Abstract
In middle Gangetic plains, high arsenic concentration is present in water, which causes a significant health risk. Two bacterial isolates, AK1 (KY569423) and AK9 (KY569424) were isolated and characterised for Arsenic detoxification. aoxR, aoxB and aoxC genes were also observed in the isolated starin which help in arsenic detoxification by oxidation method.
In middle Gangetic plain, high arsenic concentration is present in water, which causes a significant health risk. Total 48 morphologically distinct arsenite resistant bacteria were isolated from middle Gangetic plain. The minimum inhibitory concentration (MIC) values of arsenite varied widely in the range 1–15 mM of the isolates. On the basis of their MIC, two isolates, AK1 (KY569423) and AK9 (KY569424) were selected. The analysis of the 16S rRNA gene sequence of selected isolates revealed that they are belong to the genus Pseudomonas. The AgNO3 test based microplate method revealed that isolates, AK1 and AK9, have potential in transformation of arsenic species. Further, the presence of aoxR, aoxB and aoxC genes in the both isolated strain AK1 and AK9 was confirmed, which play an important role in arsenic bioremediation by arsenite oxidation. Isolated strains also showed heavy metal resistance against Cr(IV), Ni(II), Co(II), Pb(II), Cu(II), Hg(II), Ag(I) and Cd(II).
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Affiliation(s)
- Ghanshyam Kumar Satyapal
- Centre for Biological Sciences (Biotechnology), Central University of South Bihar, Patna, Bihar, India
| | - Santosh Kumar Mishra
- Centre for Biological Sciences (Biotechnology), Central University of South Bihar, Patna, Bihar, India
| | - Amrita Srivastava
- Centre for Biological Sciences (Life Science), Central University of South Bihar, Patna, Bihar, India
| | - Rajesh Kumar Ranjan
- Centre for Environmental Sciences, Central University of South Bihar, Patna, Bihar, India
| | - Krishna Prakash
- Centre for Biological Sciences (Biotechnology), Central University of South Bihar, Patna, Bihar, India
| | - Rizwanul Haque
- Centre for Biological Sciences (Biotechnology), Central University of South Bihar, Patna, Bihar, India
| | - Nitish Kumar
- Centre for Biological Sciences (Biotechnology), Central University of South Bihar, Patna, Bihar, India
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Latha P, Prakash K, Karuthapandian S. Enhanced visible light photocatalytic activity of CeO 2 /alumina nanocomposite: Synthesized via facile mixing-calcination method for dye degradation. ADV POWDER TECHNOL 2017. [DOI: 10.1016/j.apt.2017.08.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Prakash K, Kumar PS, Latha P, Saravanakumar K, Karuthapandian S. Design and Fabrication of a Novel Metal-Free SiO2/g-C3N4 Nanocomposite: A Robust Photocatalyst for the Degradation of Organic Contaminants. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0715-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Prakash K, Aggarwal S, Bhardwaj S, Ramakrishna G, Pandey CK. Serial perioperative cell-free DNA levels in donors and recipients undergoing living donor liver transplantation. Acta Anaesthesiol Scand 2017; 61:1084-1094. [PMID: 28766696 DOI: 10.1111/aas.12947] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 06/27/2017] [Accepted: 07/05/2017] [Indexed: 02/06/2023]
Abstract
BACKGROUND Effect of anaesthesia and surgery on cell-free DNA (cfDNA) is not known. Given that surgical stress augments inflammation and injury, we hypothesized that levels of cfDNA will fluctuate during perioperative period. Therefore, in this study serial perioperative cfDNA concentration was measured in donors and recipients undergoing living donor liver transplantation (LDLT). METHODS Baseline, post-induction, intraoperative and post-operative plasma cfDNA levels were evaluated in 21 donors and recipients each, by Sytox green method. In addition, qPCR was performed in a subset of samples. RESULTS Baseline cfDNA levels were higher in recipients (37.62 ng/ml) than in donors (25.49 ng/ml). A decrease in cfDNA was observed following anaesthesia induction in both recipients (11.90 ng/ml) and donors (10.75 ng/ml). When the kinetics of the cfDNA was monitored further, an increase was noted intraoperatively in donors (46.18 ng/ml) and recipients (anhepatic phase: 56.25 ng/ml, reperfusion phase: 54.36 ng/ml). cfDNA levels remained high post-operatively. One recipient who developed post-operative sepsis had the highest cfDNA level (94.72 ng/ml). CONCLUSION Plasma cfDNA levels are high in recipients indicative of liver injury. Lower cfDNA levels following induction may be attributed to the subduing effect of anaesthetic agents on cell death. High cfDNA levels seen in intra- and post-operative phases reflect cellular trauma and inflammation. This similar pattern of fluctuation of cfDNA level in donors and recipients is suggestive of its possible utility as a surgical stress marker. In addition, comparable cfDNA levels in anhepatic and reperfusion phase reflect less ischemia reperfusion injury during LDLT.
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Affiliation(s)
- K. Prakash
- Department of Anaesthesiology and Critical Care; Institute of Liver and Biliary Sciences; Vasant Kunj New Delhi India
| | - S. Aggarwal
- Department of Molecular and Cellular Medicine; Institute of Liver and Biliary Sciences; Vasant Kunj New Delhi India
| | - S. Bhardwaj
- Department of Molecular and Cellular Medicine; Institute of Liver and Biliary Sciences; Vasant Kunj New Delhi India
| | - G. Ramakrishna
- Department of Molecular and Cellular Medicine; Institute of Liver and Biliary Sciences; Vasant Kunj New Delhi India
| | - C. K. Pandey
- Department of Anaesthesiology and Critical Care; Institute of Liver and Biliary Sciences; Vasant Kunj New Delhi India
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Saravanakumar K, Karthik R, Chen SM, Vinoth Kumar J, Prakash K, Muthuraj V. Construction of novel Pd/CeO2/g-C3N4 nanocomposites as efficient visible-light photocatalysts for hexavalent chromium detoxification. J Colloid Interface Sci 2017; 504:514-526. [DOI: 10.1016/j.jcis.2017.06.003] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 05/24/2017] [Accepted: 06/02/2017] [Indexed: 11/16/2022]
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Papatheodorou E, Papadakis M, Ensam B, Finocchiaro G, Mellor G, Prakash K, D'Silva A, Wijeyeratne Y, Miles C, Malhotra A, Tome-Esteban M, Batchvarov V, Sheppard M, Sharma S, Behr E. P2115Validation of the proposed Shanghai Brugada Syndrome Score (SBrS) in a cohort of relatives of Sudden Arrhythmic Death Syndrome (SADS) victims. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 11/14/2022] Open
Affiliation(s)
- E. Papatheodorou
- St George's University of London, Cardiovascular and Cell Sciences Research Institute, London, United Kingdom
| | - M. Papadakis
- St George's University of London, Cardiovascular and Cell Sciences Research Institute, London, United Kingdom
| | - B. Ensam
- St George's University of London, Cardiovascular and Cell Sciences Research Institute, London, United Kingdom
| | - G. Finocchiaro
- St George's University of London, Cardiovascular and Cell Sciences Research Institute, London, United Kingdom
| | - G. Mellor
- St George's University of London, Cardiovascular and Cell Sciences Research Institute, London, United Kingdom
| | - K. Prakash
- St George's University of London, Cardiovascular and Cell Sciences Research Institute, London, United Kingdom
| | - A. D'Silva
- St George's University of London, Cardiovascular and Cell Sciences Research Institute, London, United Kingdom
| | - Y. Wijeyeratne
- St George's University of London, Cardiovascular and Cell Sciences Research Institute, London, United Kingdom
| | - C. Miles
- St George's University of London, Cardiovascular and Cell Sciences Research Institute, London, United Kingdom
| | - A. Malhotra
- St George's University of London, Cardiovascular and Cell Sciences Research Institute, London, United Kingdom
| | - M. Tome-Esteban
- St George's University of London, Cardiovascular and Cell Sciences Research Institute, London, United Kingdom
| | - V. Batchvarov
- St George's University of London, Cardiovascular and Cell Sciences Research Institute, London, United Kingdom
| | - M.N. Sheppard
- St George's University of London, Cardiovascular and Cell Sciences Research Institute, London, United Kingdom
| | - S. Sharma
- St George's University of London, Cardiovascular and Cell Sciences Research Institute, London, United Kingdom
| | - E.R. Behr
- St George's University of London, Cardiovascular and Cell Sciences Research Institute, London, United Kingdom
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Millar L, Dhutia H, Keteepe-Arachi T, Finocchiaro G, Malhotra A, Di Silva A, Prakash K, Carr-White J, Webb J, Merghani A, Bunce N, Anderson L, Narain R, Sharma R, Sharma S. P1531Clinical parameters to differentiate athlete's heart from dilated cardiomyopathy. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1531] [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: 11/13/2022] Open
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Raine D, Begg G, Moore J, Taylor E, Buck R, Honarbakhsh S, Yew Ding W, Redfearn D, Opel A, Opel A, Thomas D, Prakash K, Thomas D, Khokhar A, Honarbakhsh S, Tairova S, Getman N, McAloon C, Honarbakhsh S, Shah M, Al-Lawati K, Al-Lawati K, Ensam B, Collins G, Akbar S, Merghani A, Furniss G, Yones E, Vijayashankar SS, Vijayashankar SS, Shariat H, Moss A, Yeoh A, Sadiq A, Taylor R, Edwards T, Nizam ud Din K, Langley P, Shepherd E, Murray S, Lord S, Bourke J, Plein S, Lip G, Tayebjee MH, Owen N, White S, O'Neill M, Hughes L, Carroll S, Moss-Morris R, Baker V, Kirkby C, Patel K, Robinson G, Antoniou S, Richmond L, Ullah W, Hunter R, Finlay M, Earley M, Whitbread M, Schilling R, Cooper R, Modi S, Somani R, Ng A, Hobson N, Caldwell J, Hadjivassilev S, Ang R, Finlay M, Dhinoja M, Earley M, Sporton S, Schilling R, Hunter R, Hadjivassilev S, Earley M, Lambiase P, Turley A, Child N, Linker N, Owens W, James S, Milner J, Tayebjee M, Sibley J, Griffiths A, Meredith T, Basher Y, Betts T, Rajappan K, Lambiase P, Lowe M, Hunter R, Schilling R, Finlay M, Rakhimbaeva G, Akramova N, Getman T, Hamborg T, O'Hare J, Randeva H, Osman F, Srinivasan N, Kirkby C, Firman E, Tobin L, Murphy C, Lowe M, Hunter R, Finlay M, Schilling R, Lambiase P, Mohan P, Salahia G, Lim H, Lim HS, Batchvarov V, Brennan P, Cox A, Muir A, Behr E, Hamill S, Laventure C, Newell S, Gordon B, Bashir K, Chuen J, Foster W, Yusuf S, Osman F, Hayat S, Panagopoulos D, Davies E, Tomlinson D, Haywood G, Mullan J, Kelland N, Horwood A, Connell N, Odams S, Maloney J, Shetty A, Kyriacou A, Sahu J, Lee J, Uzun O, Wong A, Ashtekar S, Uzun O, Wong A, Ashtekar S, Hashemi J, Gazor S, Redfearn D, Song A, Jenkins J, Glancy J, Wilson D, Sammut E, Diab I, Cripps T, Gill A, Abbas S, Enye J, Wahab A, Elshafie S, Ling K, Carey P, Chatterjee D, Timbrell S, Tufail W, Why H, Martos R, Thornley A, James S, Turley A, Bates M, Linker N, Hassan E, Quick J, Cowell R, Ho E. POSTERS (1)59MULTIPOLAR CONTACT MAPPING GUIDED ABLATION OF TEMPORALLY STABLE HIGH FREQUENCY AND COMPLEX FRACTIONATED ATRIAL ELECTROGRAM SITES IN PATIENTS WITH PERSISTENT ATRIAL FIBRILLATION60INTRA-CARDIAC AND PERIPHERAL LEVELS OF BIOCHEMICAL MARKERS OF FIBROSES IN PATIENTS UNDERGOING CATHETER ABLATION FOR ATRIAL FIBRILATION61THE DON'T WAIT TO ANTICOAGULATE PROJECT (DWAC) BY THE WEST OF ENGLAND ACADEMIC HEALTH SCIENCE NETWORK (AHSN) OPTIMISES STROKE PREVENTION FOR PATIENTS WITH ATRIAL FIBRILLATION (AF) WITHIN PRIMARY CARE IN LINE WITH NICE CG180 IN THE WEST OF ENGLAND62ILLNESS AND TREATMENT REPRESENTATIONS, COPING AND DISTRESS: VICIOUS CYCLES OF EVERYDAY EXPERIENCES IN PATIENTS WITH PERSISTENT ATRIAL FIBRILLATION63THE NEEDS OF THE ADOLESCENT LIVING WITH AN INHERITED CARDIAC CONDITION: THE PATIENTS' PERSPECTIVE64SAFETY AND EFFICACY OF PARAMEDIC TREATMENT OF REGULAR SUPRAVENTRICULAR TACHYCARDIA (PARA-SVT)65NATURAL PROGRESSION OF QRS DURATION FOLLOWING IMPLATABLE CARDIOVERTER DEFIBRILLATORS (ICD) - IMPLANTATION66COMPARISON OF EFFICACY OF VOLTAGE DIRECTED CAVOTRICUSPID ISTHMUS ABLATION USING MINI VS CONVENTIONAL ELETRODES67CRYOBALLOON ABLATION (CRYO) FOR ATRIAL FIBRILLATION (AF) CANNOT BE GUIDED BY TEMPERATURE END-POINTS ALONE68MODERATOR BAND ECTOPY UNMASKED BY ADENOSINE AS A CAUSE OF ECTOPIC TRIGGERED IDIOPATHIC VF69EARLY CLINICAL EXPERIENCE WITH TARGETED SITE SELECTION FOR THE WiCS-LV ELECTRODE FOR CRT70DOES VECTOR MAPPING PRIOR TO IMPLANTABLE LOOP RECORDER INSERTION IMPROVE THE DETECTION OF ARRHYTHMIA?71THE ROLE OF SPECKLE TRACKING STRAIN IMAGING IN ASSESSING LEFT VENTRICULAR RESPONSE TO CARDIAC RESYNCHRONISATION THERAPY IN RESPONDERS AND NON-RESPONDERS72EVALUATING PATIENTS' EXPERIENCE AND SATISFACTION OF THE ATRIAL FIBRILLATION ABLATION PROCEDURE: A RETROSPECTIVE ANALYSIS73TROUBLESHOOTING LV LEAD IMPLANTATION - NOVEL “UNIRAIL TECHNIQUE”74SUBCLINICAL ATHEROSCELEROSIS AND COGNITIVE IMPAIRMENT75EFFECT OF LOZARTANE ON DEVELOPMENT OF THE ELECTRICAL INSTABILITY OF THE MYOCARDIUM76THE INTERPLAY BETWEEN BODY COMPOSITION AND LEFT VENTRICULAR REMODELLING IN CARDIAC RESYNCHRONISATION THERAPY77FAMILY SCREENING IN IDIOPATHIC VENTRICULAR FIBRILLATION78MANAGEMENT OF ATRIAL FIBRILLATION IN A LARGE TEACHING HOSPITAL79THE EFFECT OF LEFT VENTRICULAR LEAD POSITION ON SURVIVAL IN PATIENTS WITH BINVENTRICULAR PACEMAKRS/DEFIBRILLATORS80ACUTE DEVICE IMPLANT-RELATED COMPLICATIONS DO NOT INCREASE LATE MORTALITY81ABORTED CARIDAC ARREST AS THE SENTINEL PRESENTATION IN A COHORT OF PATIENTS WITH THE CONCEALED BRUGADA PHENOTYPE82POST-CARDIAC DEVICE IMPLANTATION MOBILISATION ADVICE: A NATIONAL SURVEY83DO RISK SCORES DEVELOPED TO PROTECT ONE-YEAR MORTALITY ACTUALLY HELP IN ACCURATELY SELECTING PATIENTS RECEIVING PRIMARY PREVENTION ICD?84ATRIAL TACHYCARDIA ARISING FROM THE NON-CORONARY AORTIC CUSP85THE EFFECT OF DIFFERENT ATRIAL FIBRILLATION ABLATION STRATEGIES ON SURFACE ECG P WAVE DURATION86PRESCRIBING DRONEDARONE: HOW IS IT DONE ACROSS THE UK AND IS IT SAFE?87A CASE OF WIDE COMPLEX TACHYCARDIA88TRANSITION TO DEDICATED DAY CASE DEVICES - SAFETY AND EFFICACY IN A LARGE VOLUME CENTRE89SEQUENTIAL REGIONAL DOMINANT FREQUENCY MAPPING DURING ATRIAL FIBRILLATION: A NOVEL TEQUNIQUE90ELECTIVE CARDIOVERSION ENERGY PROTOCOLS: A RETROSPECTIVE COMPARISON OF ESCALATION STRATEGIES91THE INCIDENCE OF CLINCALLY RELEVANT HAEMATOMAS WITH PERIOPERATIVE USE OF NEWER P2Y12 INHIBITORS AND INTERRUPTED NOAC THERAPY IN CARDIAC IMPLANTABLE ELECTRONIC DEVICE INSERTION92AN AUDIT OF THE OUTCOMES FOR CHEMICAL AND DIRECT CURRENT CARDIOVERSION FOR ATRIAL FIBRILLATION AT OUR DGH OVER A 3 YEAR DURATION93REAL LIFE ACUTE MANAGEMET OF HAEMODYNAMICALLY TOLERATED MONOMORPHIC VENTRICULAR TACHYCARDIA. ARE WE MAKING EVIDENCE BASED ON DECISIONS?94A SERVICE EVALUATION TO ASSESS THE EFFICACY AND SAFETY OF NOVEL ORAL ANTICOAGULANTS VERSUS WARFARIN FOR ELECTIVE CARDIVERSION IN PATIENTS WITH NON VALVULAR AF IN A NURSE LED CARDIOVERSION SERVICE95PICK UP RATE OF IMPLANTED LOOP RECORDER AT A DISTRICT HOSPITAL. Europace 2016. [DOI: 10.1093/europace/euw273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Prakash K, Aggarwal S, Bhardwaj S, Ramakrishna G, Pandey CK. Abstract PR524. Anesth Analg 2016. [DOI: 10.1213/01.ane.0000492907.46035.4a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Rao B, Fathima S, Viswanath V, Prakash K, Padmini D, Reddy P. Novel Citric Acid Dendritic Hydrogels for the Delivery of Econazole Nitrate and its Antifungal Activity. ACTA ACUST UNITED AC 2016. [DOI: 10.7324/japs.2016.601213] [Citation(s) in RCA: 6] [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: 10/20/2022]
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Kamalesh NP, Prakash K, Philip M, Pramil K, Sylesh A, Shaji P, Deepak GT, Rohan S. Menetrier’s Disease with Early Gastric Cancer. ACTA ACUST UNITED AC 2016; 37:58-61. [PMID: 29668181 DOI: 10.7869/tg.323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Deepak GT, Karthik K, Vijin V, Rohan S, Pramil K, Kamlesh N, Shaji P, Prakash K. A prospective study of bladder and sexual dysfunction following laparoscopic low anterior resection for carcinoma rectum in males. Apollo Medicine 2015. [DOI: 10.1016/j.apme.2015.11.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Nagarajan R, Prakash K. Synthesis of Azepino[4,5-b]indole Analogues via 7-endo-Selective Cyclization of Isocyanoacetates and Indole-1,2-alkynylaldehydes: An Approach towards the Chromoazepinone Core. Synlett 2015. [DOI: 10.1055/s-0035-1560460] [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: 10/23/2022]
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Prakash K, Kumar P, Mukherjee S, Rath P. Chimeric murine interferon regulatory factor-2 (IRF-2) binds to IRF-E (IRF binding element), VREβ(virus response element) but not to VREα1. Cell Biochem Funct 2014; 32:630-6. [DOI: 10.1002/cbf.3050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 07/16/2014] [Accepted: 07/17/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Krishna Prakash
- Recombinant DNA Technology Laboratory, Centre for Biological Science; Central University of Bihar; Patna India
- School of Life Sciences; Jawaharlal Nehru University; New Delhi India
| | - Pardeep Kumar
- School of Life Sciences; Jawaharlal Nehru University; New Delhi India
| | - Somnath Mukherjee
- School of Life Sciences; Jawaharlal Nehru University; New Delhi India
| | - P.C. Rath
- School of Life Sciences; Jawaharlal Nehru University; New Delhi India
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Basavaraja D, Narayana J, Puttaiah ET, Prakash K. Phytoplankton species diversity indices in Anjanapura reservoir, Western Ghat region, India. J Environ Biol 2013; 34:805-810. [PMID: 24640261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A qualitative study on species composition and diversity of phytoplankton flora was carried out in the Anjanapura reservoir. Water samples were collected monthly at four sites from November 2005 to October 2007 for plankton analysis. A total of 152 phytoplankton species belonging to 59 genera were recorded. The species belonging to genera Crucigenia, Pediastrum, Scenedesmus, Tetraedron, Cyclotella, Gyrosigma, Melosira, Navicula, Fragillaria, pinnularia, Synedra, Closterium, Cosmarium, Euastrum, Staurastrum, Gleocapsa, Merismopedia, Microcystis, Oscillatoria, Euglena and Phacus were found dominant. Phytoplankton density was recorded in the range of 222-1467 Org l(-1) for chlorococcales, 267-1467 Org I (-1) for diatoms, 44-889 Org l(-1) for desmids, 44-889 Org l(-1) for blue-greens and 22-1667 Org l(-1) for euglenoids. Seasonal density Shannon-Weiner diversity index (1.60-1.88) indicate that reservoir exhibited rich phytoplankton and Nygaard tropic status indices for myxophycean (1.0-1.50), chlorophycean (1.62-2.16), diatoms (0.10-0.14), euglenophycean (0.18-0.19) and compound quotient(3.25-4.66) showed that reservoir was moderately polluted. From the observed data, it could be concluded that the presence of more diverse group of phytoplankton indicate the productivity of the reservoir.
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Gupta N, Chakrabarti K, Prakash K, Wadhwa N, Gupta T, Gupta SK. Immunogenicity and Contraceptive Efficacy ofEscherichia coli-Expressed Recombinant Porcine Zona Pellucida Proteins. Am J Reprod Immunol 2013; 70:139-52. [DOI: 10.1111/aji.12095] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 01/19/2013] [Indexed: 11/28/2022] Open
Affiliation(s)
- Neha Gupta
- Reproductive Cell Biology Laboratory; National Institute of Immunology; New Delhi; India
| | - Kausiki Chakrabarti
- Reproductive Cell Biology Laboratory; National Institute of Immunology; New Delhi; India
| | - Krishna Prakash
- Reproductive Cell Biology Laboratory; National Institute of Immunology; New Delhi; India
| | - Neerja Wadhwa
- Embryo Biotechnology Laboratory; National Institute of Immunology; New Delhi; India
| | - Tripti Gupta
- Reproductive Cell Biology Laboratory; National Institute of Immunology; New Delhi; India
| | - Satish K. Gupta
- Reproductive Cell Biology Laboratory; National Institute of Immunology; New Delhi; India
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Kumar A, Prakash K, Sinha RK, Kumar N. In vitro plant propagation of Catharanthus roseus and assessment of genetic fidelity of micropropagated plants by RAPD marker assay. Appl Biochem Biotechnol 2013; 169:894-900. [PMID: 23292901 DOI: 10.1007/s12010-012-0010-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Accepted: 11/30/2012] [Indexed: 11/26/2022]
Abstract
An investigation was carried out to develop an efficient micropropagation protocol for Catharanthus roseus. Experiments were conducted to optimize suitable media for in vitro shoot multiplication and root induction. Out of the different media compared for in vitro shoot multiplication, Murashige and Skoog (MS) medium supplemented with 1 mg/l of 6-benzylaminopurine and 0.2 mg/l α-naphthaleneacetic acid showed better response in terms of the emergence of shoots from axillary buds as well as proliferation and multiplication of shoots. The shoots when placed on half strength of MS medium having 1 mg/l indole 3-butyric acid and 0.25 % charcoal showed cent percent root induction with maximum number of roots per shoot (4.2) as well as maximum root length (1.72 cm). Further, clonal fidelity of the in vitro-raised plants was carried out using randomly amplified polymorphic DNA marker and results indicated that all the tissue culture-derived plants are true-to-type and there were no somaclonal variations among these plants.
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Affiliation(s)
- Ajay Kumar
- Centre for Biological Sciences-Biotechnology, School of Earth, Biological and Environmental Sciences, Central University of Bihar, BIT Campus, Patna 800014 Bihar, India
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Prakash K, Varma D, Ramesh GN, Philip M, Mahadevan P. Ileal ganglioneuromatosis with adenocarcinoma in a patient with multiple neurofibromatosis. Indian J Surg 2012; 73:375-6. [PMID: 23024548 DOI: 10.1007/s12262-011-0276-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 03/16/2009] [Accepted: 04/06/2009] [Indexed: 11/29/2022] Open
Abstract
Von Recklinghausen's disease or type 1 neurofibromatosis is an autosomal dominant disease characterized by mucocutaneous neurofibromas, café-au-lait spots and involves many organs including gastrointestinal tract. Gastrointestinal involvement in neurofibromatosis is uncommon and is seen 25% patients and nearly 5% of them are only symptomatic (Shekitka and Sobin, Am J Surg Pathol 18:250-257, 1994; Tomita et al., Int J Colorectal Dis 21: 89-91, 2006).
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Affiliation(s)
- K Prakash
- PVS Memorial Hospital, Cochin, Kerala India
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Sahu JK, Sriwastva M, Prakash K. An association between methylenetetrahydrofolate reductase (C677T) polymorphism and large-artery ischemic stroke. Acta Neurol Scand 2012; 125:e1; author reply e2. [PMID: 22188375 DOI: 10.1111/j.1600-0404.2011.01567.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Chandrasekaran CV, Vijayalakshmi MA, Prakash K, Bansal VS, Meenakshi J, Amit A. Review Article: Herbal Approach for Obesity Management. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/ajps.2012.327119] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Tan E, Prakash K, Au W, Tan LC. 3.058 ANALYSIS OF LRRK2 VARIANT IN ESSENTIAL TREMOR. Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70794-5] [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: 11/24/2022]
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Gupta SK, Gupta N, Suman P, Choudhury S, Prakash K, Gupta T, Sriraman R, Nagendrakumar S, Srinivasan V. Zona pellucida-based contraceptive vaccines for human and animal utility. J Reprod Immunol 2011; 88:240-6. [DOI: 10.1016/j.jri.2011.01.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2010] [Revised: 12/26/2010] [Accepted: 01/16/2011] [Indexed: 11/24/2022]
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Patil RH, Prakash K, Maheshwari VL. Hypolipidemic Effect of Celastrus paniculatus in Experimentally Induced Hypercholesterolemic Wistar Rats. Indian J Clin Biochem 2010; 25:405-10. [PMID: 21966115 PMCID: PMC2994564 DOI: 10.1007/s12291-010-0050-x] [Citation(s) in RCA: 18] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2009] [Accepted: 01/18/2010] [Indexed: 10/19/2022]
Abstract
The objective of the present study was to evaluate hypolipidemic effect of methanolic extract of Celastrus paniculatus in experimentally induced hypercholesterolemic rats. Hypercholesterolemia was induced by feeding the animals with high fat diet. Oral administration of methanolic seed extract (50%) of Celastrus paniculatus at the optimized dose of 65 mg/kg body weight, substantially reduced the plasma total cholesterol, triglycerides and LDL cholesterol in comparison with induced hypercholesterolemic animal group and the results were comparable with the standard hypocholesterolemic drug and almost similar to the control group. Atherogenic index and liver weight of treated animals also showed significant decrease compared to the hypercholesterolemic animals. It substantially increased the HDL cholesterol level as compared to control group. A significant increase in the activities of lipoprotein lipase and plasma LCAT enhanced hepatic bile acid synthesis and thereby, increased degradation of cholesterol to neutral sterols. Furthermore, the activities of HMG-CoA reductase, glucose 6-phosphate dehydrogenase and malate dehydrogenase were significantly reduced. Histological studies showed less cholesterol deposits in the aorta of animals fed with seed extract of C. paniculatus compared to the induced hypercholesterolemic animals not given C. paniculatus supplement.
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Affiliation(s)
- R. H. Patil
- Department of Microbiology and Biotechnology, R.C. Patel Arts, Commerce and Science College, Shirpur, 425405 MS India
| | - K. Prakash
- Department of Biochemistry, School of Life Sciences, North Maharashatra University, Jalgaon, 425001 MS India
| | - V. L. Maheshwari
- Department of Biochemistry, School of Life Sciences, North Maharashatra University, Jalgaon, 425001 MS India
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Abstract
AIM To compare corneal endothelial structure and central corneal thickness (CCT) between type II diabetics and non-diabetic control patients. To look for correlations between diabetic status and corneal findings. METHODS Hospital-based, observational study. 200 eyes (from 100 type II diabetic patients and 100 controls) were included. Specular microscopy and pachymetry were used to measure endothelial cell density, size, coefficient of variation in cell area, hexagonality as well as corneal thickness. Independent t-tests were used to compare variables between diabetics and controls. Pearson correlation tests were used to evaluate correlations between corneal findings and diabetic status such as duration of diabetes, haemoglobin A1c (HbA1c) level and severity of diabetic retinopathy. RESULTS Endothelial cell density in the diabetic group (2541.6±516.4 cells/mm(2)) was significantly lower than that in the control group (2660.1±515.5 cells/mm(2), P<0.05). The average size of endothelial cells, standard deviation (SD) of cell size and coefficient of variation (CV) of cell area were all significantly higher in diabetics. Hexagonality was significantly lower in diabetics (41.1%±19.6%) compared to non-diabetics (45.2%±20.6%). CCT was higher in diabetics but not significant (P>0.05). Duration of diabetes, HbA1c level and severity of diabetic retinopathy were not significantly correlated with corneal endothelial findings. CONCLUSION Type II diabetes causes a significant alteration in the state of the cornea including reduction in endothelial cell density and increased pleomorphism and polymegathism. Central corneal thickness is unaffected.
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Affiliation(s)
- Mm Choo
- Department of Ophthalmology, Faculty of Medicine, University Malaya, Kuala Lumpur, Malaysia
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Prakash K. A functional micro-architecture for binocular disparity and ocular dominance in visual cortex. J Vis 2010. [DOI: 10.1167/7.15.21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Prakash K, Tuteja R. A novel DEAD box helicase Has1p from Plasmodium falciparum: N-terminal is essential for activity. Parasitol Int 2010; 59:271-7. [PMID: 20153446 DOI: 10.1016/j.parint.2010.02.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Revised: 02/02/2010] [Accepted: 02/04/2010] [Indexed: 12/19/2022]
Abstract
Helicases catalyze the opening of nucleic acid duplexes and are implicated in many nucleic acid metabolic cellular processes that require single stranded DNA or reorganization of RNA structure. Previously we have reported that Plasmodium falciparum genome contains a number of DEAD box helicases. In the present study we report the cloning, expression and characterization of one of the novel members of DEAD box family from P. falciparum. Our results indicate that it is a homologue of Has1p from yeast and it contains DNA and RNA unwinding, nucleic acid-dependent ATPase and RNA binding activities. This enzyme can utilize all the nucleosidetriphosphates (NTPs) and deoxy nucleosidetriphosphates (dNTPs) for its unwinding activity. Using a truncated derivative of this protein we further report that the N-terminal region of the protein is essentially required for its activity. These studies suggest that besides the conserved helicase domain the highly variable N-terminal region also contributes in the activity of the protein.
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Affiliation(s)
- Krishna Prakash
- Malaria Group, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi, India
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Salunke BK, Prakash K, Vishwakarma KS, Maheshwari VL. Plant metabolites: an alternative and sustainable approach towards post harvest pest management in pulses. Physiol Mol Biol Plants 2009; 15:185-97. [PMID: 23572929 PMCID: PMC3550355 DOI: 10.1007/s12298-009-0023-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Grain legumes are an important source of proteins in vegetarian diet besides their role in biological nitrogen fixation. They are prone to heavy pest infestation both on and off the field. Pest associated losses are an important contributing factor towards declining per capita availability of grain legumes. Synthetic chemical pesticides have played an important role in crop preservation, however their incessant use has posed several environmental and human health concerns. Methyl bromide and phosphine are commonly used for the post harvest preservation of grain legumes. However, the former has to be phased out by 2015 as per the Montreal protocol whereas the latter is showing development of resistance to it by the insects. In the light of this, alternative, safer and sustainable strategies are needed for crop protection. Plants can serve as a rich source of bioactive chemicals for this purpose. Both primary as well as secondary metabolites can be evaluated against the target pests. The paper reviews the status of research in the area of use of plant metabolites in post harvest pest management of grain legumes.
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Affiliation(s)
- B. K. Salunke
- Department of Biochemistry, School of Life Sciences, North Maharashtra University, P.B. No. 80, Jalgaon, 425 001 MS India
| | - K. Prakash
- Department of Biochemistry, School of Life Sciences, North Maharashtra University, P.B. No. 80, Jalgaon, 425 001 MS India
| | - K. S. Vishwakarma
- Department of Biochemistry, School of Life Sciences, North Maharashtra University, P.B. No. 80, Jalgaon, 425 001 MS India
| | - V. L. Maheshwari
- Department of Biochemistry, School of Life Sciences, North Maharashtra University, P.B. No. 80, Jalgaon, 425 001 MS India
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Prakash K, Raju PN, Shanta KK, Lakshmi MN. Preparation and characterization of lamivudine microcapsules using various cellulose polymers. TROP J PHARM RES 2007. [DOI: 10.4314/tjpr.v6i4.14668] [Citation(s) in RCA: 14] [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: 11/17/2022] Open
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Downing A, Prakash K, Gilthorpe MS, Mikeljevic JS, Forman D. Socioeconomic background in relation to stage at diagnosis, treatment and survival in women with breast cancer. Br J Cancer 2007; 96:836-40. [PMID: 17311024 PMCID: PMC2360059 DOI: 10.1038/sj.bjc.6603622] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
In a large population-based series of invasive breast cancer patients, we investigated socioeconomic background (SEB) in relation to (a) stage at diagnosis; (b) treatment pattern; and (c) 5-year survival. Women diagnosed during 1998–2000 and resident in the Northern and Yorkshire regions of England were identified from the cancer registry database (N=12 768). Logistic regression and Cox proportional hazards analyses were used to estimate associations between SEB (defined using the Townsend Index for area of residence) and tumour stage, treatment pattern, and survival. Living in a more deprived area was associated with increased likelihood of being diagnosed with stage III or IV disease (age-adjusted odds ratio (OR) 1.13; 95% confidence interval (CI) 1.08–1.18 per quartile increase in Townsend score), and, after adjustment for age and stage, reduced odds of having surgery (OR 0.85; 95% CI 0.80–0.91), and receiving radiotherapy (OR 0.91; 95% CI 0.88–0.94). Amongst patients receiving surgery, those living in more deprived areas had decreased odds of having breast conserving surgery (age plus stage-adjusted OR 0.92; 95% CI 0.89–0.95). Living in a more deprived area was also associated with increased mortality (age- plus stage-adjusted hazard ratio 1.08; 95% CI 1.05–1.11). These effects may operate through several pathways, such as later presentation leading to advanced disease.
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Affiliation(s)
- A Downing
- Cancer Epidemiology Group, Centre for Epidemiology & Biostatistics, University of Leeds, 30-32 Hyde Terrace, Leeds, UK.
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Bastion MLC, Prakash K, Siow YC, Loh SS. Bilateral corneal perforation in a sexually active adult male with gonococcal conjunctivitis. Med J Malaysia 2006; 61:366-8. [PMID: 17240593] [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: 05/13/2023]
Abstract
A 41 year-old Malay man had been treated by general practitioners for bilateral red eyes with profuse discharge of three weeks' duration with no improvement. He then presented to an ophthalmologist who noted profuse purulent discharge, bilateral corneal perforation, lid swelling and chemosis. Culture of the ocular discharge grew Neisseria gonorrhoeae. Treatment with systemic and topical antibiotics prevented microperforations in the right eye from progressing to overt perforation and was able to control disease in the left eye.
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Affiliation(s)
- M L C Bastion
- Department of Ophthalmology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, 56000 Kuala Lumpur, Malaysia
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Abstract
BACKGROUND/AIM Himalaya Eye Hospital (HEH), established in 1993, is rendering eye care services in the Gandaki and Dhaulagiri zones. The hospital has extensive community outreach activities along with services for outpatients, emergencies, and subspecialties such as vitreoretinal, paediatric, and low vision. The operation theatre is well equipped to match the surgical needs including phaco surgery for cataract. The hospital has performed more than 14 000 cataract surgeries and 250 000 treatment services during this period. The aim of this study was to estimate the prevalence of blindness, visual impairment, and cataract surgical coverage among the older adult population of three districts of Gandaki Zone, where 80% of the hospital's service recipients reside. METHODS People aged 45 years and older were enrolled in the study using a stratified cluster design. Subjects in 25 randomly selected clusters from the listed 806 were recruited through door to door visits. Each recruited subject had visual acuity (VA) and clinical examination conducted by an ophthalmologist. The survey was preceded by pre-pilot and pilot studies to refine the operational method. To assess quality assurance the interobserver variation in VA measurement was also carried out in five different clusters. RESULTS Out of 5863 selected subjects 85.3% were examined. Blindness defined as presenting VA <6/60 in both eyes was found in 2.6% (95% confidence interval (CI): 2.2 to 3.9), whereas 16.8% individuals examined had vision <6/19 in one or both eyes. Cataract was the principal cause of blindness in 60.5%, and refractive error was the dominant cause of vision impairment (<6/19) 83.3%. Cataract surgical coverage was 59.5% among the cataract blind and associated with younger age, literacy, and male sex. CONCLUSION The finding suggests a positive impact of the HEH programme on the prevalence of blindness and cataract surgical services in the survey area. Strategies to further improve access and utilisation of facilities and increase cataract surgical coverage need to be developed.
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Affiliation(s)
- Y D Sapkota
- Nepal Netra Jyoti Sangh, PO Box 335, Tripureshwor, Kathmandu, Nepal.
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Mani J, Gupta A, Mascha E, Lachhwani D, Prakash K, Bingaman W, Wyllie E. Postoperative seizures after extratemporal resections and hemispherectomy in pediatric epilepsy. Neurology 2006; 66:1038-43. [PMID: 16606916 DOI: 10.1212/01.wnl.0000204236.96232.1c] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [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: 11/15/2022] Open
Abstract
Objectives: To estimate frequency and risk factors for acute postoperative seizures (APOS) within the first week after extratemporal cortical resection (ETR) and hemispherectomy (HS) in children and to assess the predictive value of APOS on long-term seizure outcome in this group.Methods: The authors conducted a retrospective analysis of children (<18 years), who underwent ETR or HS for intractable epilepsy between 1995 and 2002. APOS features and seizure outcome after ETR or HS were obtained at 6, 12, and 24 months. Univariate logistic regression was used for risk factors of APOS and life table analysis and log rank tests for seizure outcome at 0 to 6, 6 to 12, and 12 to 24 months.Results: Of 132 patients, 34 (26%) had APOS. APOS were more frequent after ETR (26/71) than HS (8/61) (p < 0.01). APOS, irrespective of their timing, number, semiology, or other perioperative complications, were an independent predictor of poor postoperative seizure outcome at 2 years (p < 0.001). The estimated odds of postoperative Engel class I outcome in the APOS vs non-APOS categories was 0.27 (73% less likely) for 0- to 6-month, 0.22 (78% less likely) for 6- to 12-month, and 0.13 (87% less likely) for the 12- to 24-month intervals.Conclusions: Acute postoperative seizures (APOS) occur in 26% children, and the risk is higher after extratemporal cortical resection than hemispherectomy. APOS predict a poor postoperative seizure outcome at 6, 12, and 24 months. This study is useful for counseling families after epilepsy surgery. It also suggests that APOS may not be discounted as “benign” in research studies that evaluate seizure outcomes after epilepsy surgery.
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Affiliation(s)
- J Mani
- Department of Neurology, Cleveland Clinic Foundation, OH 44195, USA
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Shah U, Arlotti J, Dhir R, Lu S, Pirozzi G, Prakash K, Getzenberg R. Androgen Regulation of JM-27 is Associated With the Diseased Prostate. J Urol 2006. [DOI: 10.1016/s0022-5347(05)01027-x] [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: 10/25/2022]
Affiliation(s)
- U.S. Shah
- Department of Urology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - J. Arlotti
- Department of Urology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - R. Dhir
- Department of Urology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - S. Lu
- Department of Urology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - G. Pirozzi
- Department of Urology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - K. Prakash
- Department of Urology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - R.H. Getzenberg
- Department of Urology, University of Pittsburgh, Pittsburgh, Pennsylvania
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Prasad N, Biswas G, Khadwal A, Prakash K, Paiurikh KM. Carcinoma Esophagus with Brain Matastasis. Indian J Med Paediatr Oncol 2006. [DOI: 10.1055/s-0041-1733167] [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: 10/18/2022] Open
Affiliation(s)
- N Prasad
- Department of Medical Oncology, Tata Hemorial Hospital Parel, Mumbai 400012, India
| | - G Biswas
- Department of Medical Oncology, Tata Hemorial Hospital Parel, Mumbai 400012, India
| | - A Khadwal
- Department of Medical Oncology, Tata Hemorial Hospital Parel, Mumbai 400012, India
| | - K Prakash
- Department of Medical Oncology, Tata Hemorial Hospital Parel, Mumbai 400012, India
| | - KM Paiurikh
- Department of Medical Oncology, Tata Hemorial Hospital Parel, Mumbai 400012, India
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Jethani J, Prakash K, Vijayalakshmi P, Parija S. Changes in astigmatism in children with congenital nystagmus. Graefes Arch Clin Exp Ophthalmol 2005; 244:938-43. [PMID: 16362319 DOI: 10.1007/s00417-005-0157-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2005] [Revised: 08/18/2005] [Accepted: 09/19/2005] [Indexed: 10/25/2022] Open
Abstract
BACKGROUND Astigmatism is commonly reported in children with and without nystagmus. In children less than 4 years of age the astigmatism changes from against the rule (ATR) to with the rule (WTR) astigmatism in children without nystagmus. However, little is known about children with congenital nystagmus. We compared astigmatism in children with congenital nystagmus below 4 years and above 4 years of age. MATERIAL AND METHODS Three hundred and fifty-six eyes in 178 children who satisfied the study criteria were included. The children were divided into those below 4 years of age (n of eyes = 192) and those above (n of eyes = 164). Cycloplegic refraction (with manual retinoscopy) carried out at presentation and at the last follow-up were recorded and compared. Cycloplegia was achieved using cyclopentolate eye drops. Outcome of eyes with no astigmatism at initial presentation was compared with the final refraction in both the age groups. The visual acuity at the first presentation was compared with the visual acuity at the last presentation. RESULTS Average follow-up duration was 3.36+/-1.59 years. On presentation, 176 (49.44%) eyes did not have any astigmatism. We found that 26 (25.2%) out of the 103 children below 4 years of age who did not have any astigmatism on presentation developed WTR astigmatism after a mean follow-up of 3.5+/-1.5 years. (p= 0.042). In children >or=4 years of age only 7 (9.6%) children out of 73 developed WTR after a mean follow-up of 3.4+/-1.4 years. The visual acuity change was not found to be significant in the two groups. The majority (90.3%) improved or had same visual acuity in group A and 88.9% improved or had the same visual acuity in group B at the last follow-up (p= 0.77). DISCUSSION Our incidence of WTR astigmatism in children with congenital nystagmus is similar to those previously reported series. Our data suggest that there is a significant chance that children under 4 years with congenital nystagmus may develop WTR astigmatism compared with children above 4 years of age. CONCLUSION With the rule (WTR) astigmatism is common in children with nystagmus. Children under 4 years of age presenting with no astigmatism may acquire WTR astigmatism as they grow. The amount of astigmatism increases with age in children with nystagmus. Visual acuity, however, remains stable as the age advances.
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Affiliation(s)
- J Jethani
- Paediatric Ophthalmology and Strabismus, Aravind Eye Hospitals, 1, Annanagar, 625020, Madurai, India.
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Prakash K, Ramesh H, Jacob G, Venugopal A, Lekha V, Varma D, Ramesh GN, Augustine P. Multidisciplinary approach in the long-term management of intrahepatic stones: Indian experience. Indian J Gastroenterol 2005; 23:209-13. [PMID: 15627659] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Intrahepatic stones, though common in East Asia, are uncommon in India. There is paucity of data from India regarding the treatment and long-term outcome of patients with intrahepatic stones. METHODS We retrospectively analyzed medical records of 35 patients with intrahepatic stones who had been treated surgically. Endoscopic biliary drainage had been used in patients who presented with acute cholangitis. Intraoperative stone clearance was confirmed by choledochoscopy and intraoperative cholangiography. Outcome of surgery, frequency and subsequent management of recurrent intrahepatic stones, and factors associated with stone recurrence and cholangitis were analyzed. RESULTS Twenty-one (60%) patients had bilobar disease. Eight patients underwent hepatectomy and 16 hepatico-jejunostomy with access loop; 12 of these were jejuno-duodenal anastomoses. Postoperative morbidity was observed in 10 patients (29%). Recurrence of stones occurred in 12 patients (34%) and cholangitis in 9 patients (26%). Presence of bilobar disease and associated biliary strictures were associated with recurrent cholangitis (p< 0.05). Two patients (6%) required re-operation for recurrent cholangitis. Complete removal of recurrent stones using conventional endoscope was possible through jejuno-duodenostomy in all 5 cases who had this type of access loop construction. CONCLUSION Surgical treatment for intrahepatic stones depends on the site of involvement. Construction of a jejuno-duodenal access loop in patients with bilobar disease and intrahepatic strictures is helpful in facilitating postoperative stone clearance. A multidisciplinary approach is beneficial especially when the disease is bilobar and recurrent in type.
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Affiliation(s)
- K Prakash
- Department of Gastrointestinal Surgery, Digestive Diseases Center, P V S Memorial Hospital, Cochin, Kerala, India
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Ramesh H, Prakash K, Lekha V, Jacob G, Venugopal A. Are some cases of infected pancreatic necrosis treatable without intervention? Dig Surg 2003; 20:296-9; discussion 300. [PMID: 12789025 DOI: 10.1159/000071694] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2002] [Accepted: 11/11/2002] [Indexed: 12/31/2022]
Abstract
BACKGROUND Infected pancreatic necrosis is considered an absolute indication for interventional management such as percutaneous drainage or surgery. The presence of retroperitoneal air is a sign of anaerobic sepsis. METHOD A retrospective review of case records of patients presenting with severe acute pancreatitis and pancreatic necrosis was performed to identify cases in whom conservative treatment was followed by a satisfactory outcome. RESULTS Four patients were identified over a 3-year period who had pancreatic necrosis and retroperitoneal air; they were treated with antibiotics and intensive care, and they improved without any interventional treatment. CONCLUSIONS Some patients with infected pancreatic necrosis are treatable medically. The clinical status of the patients may well be a more important factor governing the choice of the treatment approach than bacteriological findings of infection alone.
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Affiliation(s)
- H Ramesh
- Digestive Diseases Center, PVS Memorial Hospital, Cochin, India.
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Ramesh H, Prakash K, Lekha V, Jacob G, Venugopal A, Venugopal B. Port-site tuberculosis after laparoscopy: report of eight cases. Surg Endosc 2003; 17:930-2. [PMID: 12618936 DOI: 10.1007/s00464-002-9057-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2002] [Accepted: 10/17/2002] [Indexed: 01/13/2023]
Abstract
In light of the explosive increase in laparoscopic surgery, there is concern about the effectiveness of sterilizing reusable laparoscopic instruments by immersion in 2% glutaraldehyde. This article describes the clinical features of eight patients who presented with biopsy-proven tuberculosis at the port-site unassociated with other clinical features of tuberculosis. Three of the eight patients had positive cultures for Mycobacterium tuberculosis. The port-site sinuses healed with antituberculous chemotherapy. There is conflicting information in the literature regarding the effectiveness of a 20-min instrument soak in 2% glutaraldehyde to clear M. tuberculosis. In light of the preceding information, the current practice of glutaraldehyde disinfection for reusable laparoscopes needs to be reexamined.
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Affiliation(s)
- H Ramesh
- Department of Gastrointestinal Surgery, PVS Memorial Hospital, 31/543, Subhash Nagar, Edappally, Cochin 682024, Kerala, India.
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Prakash K, Jacob G, Lekha V, Venugopal A, Venugopal B, Ramesh H. Laparoscopic cholecystectomy in acute cholecystitis. Surg Endosc 2002; 16:180-3. [PMID: 11961635 DOI: 10.1007/s004640080193] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2001] [Accepted: 04/17/2001] [Indexed: 11/30/2022]
Abstract
BACKGROUND In the light of laparoscopic cholecystectomy increasingly applied to all forms of cholecystitis, this study aimed at evaluating the safety of laparoscopic cholecystectomy applied to all cases of acute cholecystitis, and at determining factors associated with the risk of conversion to open cholecystectomy. METHODS The clinical, biochemical, radiologic, and operative data from 124 consecutive cases of acute cholecystitis were analyzed retrospectively to determine the complications and morbidity after operation. The data were analyzed further by univariate and multivariate analysis to identify factors associated with conversion. RESULTS No major bile duct injury or mortality occurred. Bile leak from the stump of the cystic duct developed in four patients. These were managed successfully by endoscopic biliary stent placement. The mean duration of hospital stay was 3.8 days in the laparoscopic group and 8.2 days in the open group. Of the 124 patients (18.5%), 23 underwent conversion to open cholecystectomy. Univariate analysis identified the following factors as associated with conversion: common duct dilation greater than 7 mm observed on ultrasound, (p < 0.05), pericholecystic collection seen on ultrasound (p < 0.0001), emphysematous cholecystitis (p < 0.01), endoscopic retrograde cholangiopancreatographic evidence of Mirizzi syndrome (p < 0.05), and pericholecystic collection at operation (p < 0.0001). On multivariate analysis, only pericholecystic collection (p < 0.015) and gallbladder wall thickness greater than 5 mm (p < 0.013) were statistically significant. CONCLUSIONS Laparoscopic cholecystectomy for acute cholecystitis can be applied safely to all comers, offering the advantage of a shortened hospital stay. Pericholecystic collection, as observed on ultrasound, is associated with a high risk of conversion to open cholecystectomy.
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Affiliation(s)
- K Prakash
- Digestive Diseases Centre, PVS Memorial Hospital, Kochi, Kerala, India 682017.
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