1
|
Addetia A, Piccoli L, Case JB, Park YJ, Beltramello M, Guarino B, Dang H, de Melo GD, Pinto D, Sprouse K, Scheaffer SM, Bassi J, Silacci-Fregni C, Muoio F, Dini M, Vincenzetti L, Acosta R, Johnson D, Subramanian S, Saliba C, Giurdanella M, Lombardo G, Leoni G, Culap K, McAlister C, Rajesh A, Dellota E, Zhou J, Farhat N, Bohan D, Noack J, Chen A, Lempp FA, Quispe J, Kergoat L, Larrous F, Cameroni E, Whitener B, Giannini O, Cippà P, Ceschi A, Ferrari P, Franzetti-Pellanda A, Biggiogero M, Garzoni C, Zappi S, Bernasconi L, Kim MJ, Rosen LE, Schnell G, Czudnochowski N, Benigni F, Franko N, Logue JK, Yoshiyama C, Stewart C, Chu H, Bourhy H, Schmid MA, Purcell LA, Snell G, Lanzavecchia A, Diamond MS, Corti D, Veesler D. Neutralization, effector function and immune imprinting of Omicron variants. Nature 2023; 621:592-601. [PMID: 37648855 PMCID: PMC10511321 DOI: 10.1038/s41586-023-06487-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 07/27/2023] [Indexed: 09/01/2023]
Abstract
Currently circulating SARS-CoV-2 variants have acquired convergent mutations at hot spots in the receptor-binding domain1 (RBD) of the spike protein. The effects of these mutations on viral infection and transmission and the efficacy of vaccines and therapies remains poorly understood. Here we demonstrate that recently emerged BQ.1.1 and XBB.1.5 variants bind host ACE2 with high affinity and promote membrane fusion more efficiently than earlier Omicron variants. Structures of the BQ.1.1, XBB.1 and BN.1 RBDs bound to the fragment antigen-binding region of the S309 antibody (the parent antibody for sotrovimab) and human ACE2 explain the preservation of antibody binding through conformational selection, altered ACE2 recognition and immune evasion. We show that sotrovimab binds avidly to all Omicron variants, promotes Fc-dependent effector functions and protects mice challenged with BQ.1.1 and hamsters challenged with XBB.1.5. Vaccine-elicited human plasma antibodies cross-react with and trigger effector functions against current Omicron variants, despite a reduced neutralizing activity, suggesting a mechanism of protection against disease, exemplified by S309. Cross-reactive RBD-directed human memory B cells remained dominant even after two exposures to Omicron spikes, underscoring the role of persistent immune imprinting.
Collapse
Affiliation(s)
- Amin Addetia
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | | | - James Brett Case
- Department of Medicine, Washington University School of Medicine, St Louis, MO, USA
| | - Young-Jun Park
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | | | | | - Ha Dang
- Vir Biotechnology, San Francisco, CA, USA
| | - Guilherme Dias de Melo
- Institut Pasteur, Université Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, Paris, France
| | | | - Kaitlin Sprouse
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - Suzanne M Scheaffer
- Department of Medicine, Washington University School of Medicine, St Louis, MO, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Jiayi Zhou
- Vir Biotechnology, San Francisco, CA, USA
| | | | - Dana Bohan
- Vir Biotechnology, San Francisco, CA, USA
| | | | - Alex Chen
- Vir Biotechnology, San Francisco, CA, USA
| | | | - Joel Quispe
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - Lauriane Kergoat
- Institut Pasteur, Université Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, Paris, France
| | - Florence Larrous
- Institut Pasteur, Université Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, Paris, France
| | | | - Bradley Whitener
- Department of Medicine, Washington University School of Medicine, St Louis, MO, USA
| | - Olivier Giannini
- Faculty of Biomedical Sciences, Università della Svizzera italiana, Lugano, Switzerland
- Department of Medicine, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
| | - Pietro Cippà
- Faculty of Biomedical Sciences, Università della Svizzera italiana, Lugano, Switzerland
- Department of Medicine, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
- Division of Nephrology, Ente Ospedaliero Cantonale, Lugano, Switzerland
| | - Alessandro Ceschi
- Faculty of Biomedical Sciences, Università della Svizzera italiana, Lugano, Switzerland
- Clinical Trial Unit, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Division of Clinical Pharmacology and Toxicology, Institute of Pharmacological Sciences of Southern Switzerland, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Department of Clinical Pharmacology and Toxicology, University Hospital Zurich, Zurich, Switzerland
| | - Paolo Ferrari
- Faculty of Biomedical Sciences, Università della Svizzera italiana, Lugano, Switzerland
- Division of Nephrology, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | | | - Maira Biggiogero
- Clinical Research Unit, Clinica Luganese Moncucco, Lugano, Switzerland
| | - Christian Garzoni
- Clinic of Internal Medicine and Infectious Diseases, Clinica Luganese Moncucco, Lugano, Switzerland
| | - Stephanie Zappi
- Division of Nephrology, Cantonal Hospital Aarau, Aarau, Switzerland
| | - Luca Bernasconi
- Institute of Laboratory Medicine, Cantonal Hospital Aarau, Aarau, Switzerland
| | - Min Jeong Kim
- Division of Nephrology, Cantonal Hospital Aarau, Aarau, Switzerland
| | | | | | | | | | - Nicholas Franko
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, WA, USA
| | - Jennifer K Logue
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, WA, USA
| | | | - Cameron Stewart
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - Helen Chu
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, WA, USA
| | - Hervé Bourhy
- Institut Pasteur, Université Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, Paris, France
| | | | | | | | | | - Michael S Diamond
- Department of Medicine, Washington University School of Medicine, St Louis, MO, USA.
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, MO, USA.
- Department of Molecular Microbiology, Washington University School of Medicine, St Louis, MO, USA.
- Andrew M. and Jane M. Bursky Center for Human Immunology and Immunotherapy Programs, Washington University School of Medicine, St Louis, MO, USA.
- Center for Vaccines and Immunity to Microbial Pathogens, Washington University School of Medicine, St Louis, MO, USA.
| | | | - David Veesler
- Department of Biochemistry, University of Washington, Seattle, WA, USA.
- Howard Hughes Medical Institute, University of Washington, Seattle, WA, USA.
| |
Collapse
|
2
|
Babu SB, Weston M, Rajesh A. Pain relief in interventional radiology. Clin Radiol 2023; 78:239. [PMID: 36868972 DOI: 10.1016/j.crad.2023.02.001] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 02/09/2023] [Indexed: 02/19/2023]
Affiliation(s)
- S B Babu
- National Healthcare Group, Singapore, Republic of Singapore.
| | - M Weston
- St James's University Hospital, Leeds, UK
| | - A Rajesh
- University Hospitals of Leicester NHS Trust, Leicester, UK
| |
Collapse
|
3
|
Addetia A, Piccoli L, Case JB, Park YJ, Beltramello M, Guarino B, Dang H, Pinto D, Scheaffer S, Sprouse K, Bassi J, Silacci-Fregni C, Muoio F, Dini M, Vincenzetti L, Acosta R, Johnson D, Subramanian S, Saliba C, Giurdanella M, Lombardo G, Leoni G, Culap K, McAlister C, Rajesh A, Dellota E, Zhou J, Farhat N, Bohan D, Noack J, Lempp FA, Cameroni E, Whitener B, Giannini O, Ceschi A, Ferrari P, Franzetti-Pellanda A, Biggiogero M, Garzoni C, Zappi S, Bernasconi L, Kim MJ, Schnell G, Czudnochowski N, Franko N, Logue JK, Yoshiyama C, Stewart C, Chu H, Schmid MA, Purcell LIA, Snell G, Lanzavecchia A, Diamond M, Corti D, Veesler D. Therapeutic and vaccine-induced cross-reactive antibodies with effector function against emerging Omicron variants. bioRxiv 2023:2023.01.17.523798. [PMID: 36711984 PMCID: PMC9882201 DOI: 10.1101/2023.01.17.523798] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Currently circulating SARS-CoV-2 variants acquired convergent mutations at receptor-binding domain (RBD) hot spots. Their impact on viral infection, transmission, and efficacy of vaccines and therapeutics remains poorly understood. Here, we demonstrate that recently emerged BQ.1.1. and XBB.1 variants bind ACE2 with high affinity and promote membrane fusion more efficiently than earlier Omicron variants. Structures of the BQ.1.1 and XBB.1 RBDs bound to human ACE2 and S309 Fab (sotrovimab parent) explain the altered ACE2 recognition and preserved antibody binding through conformational selection. We show that sotrovimab binds avidly to all Omicron variants, promotes Fc-dependent effector functions and protects mice challenged with BQ.1.1, the variant displaying the greatest loss of neutralization. Moreover, in several donors vaccine-elicited plasma antibodies cross-react with and trigger effector functions against Omicron variants despite reduced neutralizing activity. Cross-reactive RBD-directed human memory B cells remained dominant even after two exposures to Omicron spikes, underscoring persistent immune imprinting. Our findings suggest that this previously overlooked class of cross-reactive antibodies, exemplified by S309, may contribute to protection against disease caused by emerging variants through elicitation of effector functions.
Collapse
|
4
|
Park YJ, Pinto D, Walls AC, Liu Z, De Marco A, Benigni F, Zatta F, Silacci-Fregni C, Bassi J, Sprouse KR, Addetia A, Bowen JE, Stewart C, Giurdanella M, Saliba C, Guarino B, Schmid MA, Franko NM, Logue JK, Dang HV, Hauser K, di Iulio J, Rivera W, Schnell G, Rajesh A, Zhou J, Farhat N, Kaiser H, Montiel-Ruiz M, Noack J, Lempp FA, Janer J, Abdelnabi R, Maes P, Ferrari P, Ceschi A, Giannini O, de Melo GD, Kergoat L, Bourhy H, Neyts J, Soriaga L, Purcell LA, Snell G, Whelan SPJ, Lanzavecchia A, Virgin HW, Piccoli L, Chu HY, Pizzuto MS, Corti D, Veesler D. Imprinted antibody responses against SARS-CoV-2 Omicron sublineages. Science 2022; 378:619-627. [PMID: 36264829 DOI: 10.1126/science.adc9127] [Citation(s) in RCA: 86] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron sublineages carry distinct spike mutations resulting in escape from antibodies induced by previous infection or vaccination. We show that hybrid immunity or vaccine boosters elicit plasma-neutralizing antibodies against Omicron BA.1, BA.2, BA.2.12.1, and BA.4/5, and that breakthrough infections, but not vaccination alone, induce neutralizing antibodies in the nasal mucosa. Consistent with immunological imprinting, most antibodies derived from memory B cells or plasma cells of Omicron breakthrough cases cross-react with the Wuhan-Hu-1, BA.1, BA.2, and BA.4/5 receptor-binding domains, whereas Omicron primary infections elicit B cells of narrow specificity up to 6 months after infection. Although most clinical antibodies have reduced neutralization of Omicron, we identified an ultrapotent pan-variant-neutralizing antibody that is a strong candidate for clinical development.
Collapse
Affiliation(s)
- Young-Jun Park
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Howard Hughes Medical Institute, University of Washington, Seattle, WA, USA
| | - Dora Pinto
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - Alexandra C Walls
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Howard Hughes Medical Institute, University of Washington, Seattle, WA, USA
| | - Zhuoming Liu
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Anna De Marco
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - Fabio Benigni
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - Fabrizia Zatta
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | | | - Jessica Bassi
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - Kaitlin R Sprouse
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - Amin Addetia
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - John E Bowen
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - Cameron Stewart
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | | | - Christian Saliba
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - Barbara Guarino
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - Michael A Schmid
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - Nicholas M Franko
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, WA, USA
| | - Jennifer K Logue
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, WA, USA
| | - Ha V Dang
- Vir Biotechnology, San Francisco, CA, USA
| | | | | | | | | | | | - Jiayi Zhou
- Vir Biotechnology, San Francisco, CA, USA
| | | | | | | | | | | | - Javier Janer
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Rana Abdelnabi
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, B-3000 Leuven, Belgium
| | - Piet Maes
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, B-3000 Leuven, Belgium
| | - Paolo Ferrari
- Faculty of Biomedical Sciences, Università della Svizzera italiana, Lugano, Switzerland
- Division of Nephrology, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Alessandro Ceschi
- Faculty of Biomedical Sciences, Università della Svizzera italiana, Lugano, Switzerland
- Clinical Trial Unit, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Division of Clinical Pharmacology and Toxicology, Institute of Pharmacological Sciences of Southern Switzerland, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Department of Clinical Pharmacology and Toxicology, University Hospital Zurich, Zurich, Switzerland
| | - Olivier Giannini
- Faculty of Biomedical Sciences, Università della Svizzera italiana, Lugano, Switzerland
- Department of Medicine, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
| | - Guilherme Dias de Melo
- Institut Pasteur, Université Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, F-75015 Paris, France
| | - Lauriane Kergoat
- Institut Pasteur, Université Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, F-75015 Paris, France
| | - Hervé Bourhy
- Institut Pasteur, Université Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, F-75015 Paris, France
| | - Johan Neyts
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, B-3000 Leuven, Belgium
| | | | | | | | - Sean P J Whelan
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, USA
| | | | - Herbert W Virgin
- Vir Biotechnology, San Francisco, CA, USA
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
- Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX, USA
| | - Luca Piccoli
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - Helen Y Chu
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, WA, USA
| | | | - Davide Corti
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - David Veesler
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Howard Hughes Medical Institute, University of Washington, Seattle, WA, USA
| |
Collapse
|
5
|
Park YJ, Pinto D, Walls AC, Liu Z, De Marco A, Benigni F, Zatta F, Silacci-Fregni C, Bassi J, Sprouse KR, Addetia A, Bowen JE, Stewart C, Giurdanella M, Saliba C, Guarino B, Schmid MA, Franko NM, Logue JK, Dang HV, Hauser K, di Iulio J, Rivera W, Schnell G, Rajesh A, Zhou J, Farhat N, Kaiser H, Montiel-Ruiz M, Noack J, Lempp FA, Janer J, Abdelnabi R, Maes P, Ferrari P, Ceschi A, Giannini O, de Melo GD, Kergoat L, Bourhy H, Neyts J, Soriaga L, Purcell LA, Snell G, Whelan SPJ, Lanzavecchia A, Virgin HW, Piccoli L, Chu HY, Pizzuto MS, Corti D, Veesler D. Imprinted antibody responses against SARS-CoV-2 Omicron sublineages. Science 2022. [PMID: 36264829 DOI: 10.1101/2022.05.08.491108v1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron sublineages carry distinct spike mutations resulting in escape from antibodies induced by previous infection or vaccination. We show that hybrid immunity or vaccine boosters elicit plasma-neutralizing antibodies against Omicron BA.1, BA.2, BA.2.12.1, and BA.4/5, and that breakthrough infections, but not vaccination alone, induce neutralizing antibodies in the nasal mucosa. Consistent with immunological imprinting, most antibodies derived from memory B cells or plasma cells of Omicron breakthrough cases cross-react with the Wuhan-Hu-1, BA.1, BA.2, and BA.4/5 receptor-binding domains, whereas Omicron primary infections elicit B cells of narrow specificity up to 6 months after infection. Although most clinical antibodies have reduced neutralization of Omicron, we identified an ultrapotent pan-variant-neutralizing antibody that is a strong candidate for clinical development.
Collapse
Affiliation(s)
- Young-Jun Park
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Howard Hughes Medical Institute, University of Washington, Seattle, WA, USA
| | - Dora Pinto
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - Alexandra C Walls
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Howard Hughes Medical Institute, University of Washington, Seattle, WA, USA
| | - Zhuoming Liu
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Anna De Marco
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - Fabio Benigni
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - Fabrizia Zatta
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | | | - Jessica Bassi
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - Kaitlin R Sprouse
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - Amin Addetia
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - John E Bowen
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - Cameron Stewart
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | | | - Christian Saliba
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - Barbara Guarino
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - Michael A Schmid
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - Nicholas M Franko
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, WA, USA
| | - Jennifer K Logue
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, WA, USA
| | - Ha V Dang
- Vir Biotechnology, San Francisco, CA, USA
| | | | | | | | | | | | - Jiayi Zhou
- Vir Biotechnology, San Francisco, CA, USA
| | | | | | | | | | | | - Javier Janer
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Rana Abdelnabi
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, B-3000 Leuven, Belgium
| | - Piet Maes
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, B-3000 Leuven, Belgium
| | - Paolo Ferrari
- Faculty of Biomedical Sciences, Università della Svizzera italiana, Lugano, Switzerland
- Division of Nephrology, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Alessandro Ceschi
- Faculty of Biomedical Sciences, Università della Svizzera italiana, Lugano, Switzerland
- Clinical Trial Unit, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Division of Clinical Pharmacology and Toxicology, Institute of Pharmacological Sciences of Southern Switzerland, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Department of Clinical Pharmacology and Toxicology, University Hospital Zurich, Zurich, Switzerland
| | - Olivier Giannini
- Faculty of Biomedical Sciences, Università della Svizzera italiana, Lugano, Switzerland
- Department of Medicine, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
| | - Guilherme Dias de Melo
- Institut Pasteur, Université Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, F-75015 Paris, France
| | - Lauriane Kergoat
- Institut Pasteur, Université Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, F-75015 Paris, France
| | - Hervé Bourhy
- Institut Pasteur, Université Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, F-75015 Paris, France
| | - Johan Neyts
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, B-3000 Leuven, Belgium
| | | | | | | | - Sean P J Whelan
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, USA
| | | | - Herbert W Virgin
- Vir Biotechnology, San Francisco, CA, USA
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
- Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX, USA
| | - Luca Piccoli
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - Helen Y Chu
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, WA, USA
| | | | - Davide Corti
- Humabs Biomed SA, Subsidiary of Vir Biotechnology, Bellinzona, Switzerland
| | - David Veesler
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Howard Hughes Medical Institute, University of Washington, Seattle, WA, USA
| |
Collapse
|
6
|
Park YJ, Pinto D, Walls AC, Liu Z, Marco AD, Benigni F, Zatta F, Silacci-Fregni C, Bassi J, Sprouse KR, Addetia A, Bowen JE, Stewart C, Giurdanella M, Saliba C, Guarino B, Schmid MA, Franko N, Logue J, Dang HV, Hauser K, Iulio JD, Rivera W, Schnell G, Rajesh A, Zhou J, Farhat N, Kaiser H, Montiel-Ruiz M, Noack J, Lempp FA, Janer J, Abdelnabi R, Maes P, Ferrari P, Ceschi A, Giannini O, de Melo GD, Kergoat L, Bourhy H, Neyts J, Soriaga L, Purcell LA, Snell G, Whelan SPJ, Lanzavecchia A, Virgin HW, Piccoli L, Chu H, Pizzuto MS, Corti D, Veesler D. Imprinted antibody responses against SARS-CoV-2 Omicron sublineages. bioRxiv 2022:2022.05.08.491108. [PMID: 35677069 PMCID: PMC9176643 DOI: 10.1101/2022.05.08.491108] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
SARS-CoV-2 Omicron sublineages carry distinct spike mutations and represent an antigenic shift resulting in escape from antibodies induced by previous infection or vaccination. We show that hybrid immunity or vaccine boosters result in potent plasma neutralizing activity against Omicron BA.1 and BA.2 and that breakthrough infections, but not vaccination-only, induce neutralizing activity in the nasal mucosa. Consistent with immunological imprinting, most antibodies derived from memory B cells or plasma cells of Omicron breakthrough cases cross-react with the Wuhan-Hu-1, BA.1 and BA.2 receptor-binding domains whereas Omicron primary infections elicit B cells of narrow specificity. While most clinical antibodies have reduced neutralization of Omicron, we identified an ultrapotent pan-variant antibody, that is unaffected by any Omicron lineage spike mutations and is a strong candidate for clinical development.
Collapse
Affiliation(s)
- Young-Jun Park
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
- Howard Hughes Medical Institute, University of Washington, Seattle, WA 98195, USA
| | - Dora Pinto
- Humabs Biomed SA, a subsidiary of Vir Biotechnology, 6500 Bellinzona, Switzerland
| | - Alexandra C Walls
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
- Howard Hughes Medical Institute, University of Washington, Seattle, WA 98195, USA
| | - Zhuoming Liu
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Anna De Marco
- Humabs Biomed SA, a subsidiary of Vir Biotechnology, 6500 Bellinzona, Switzerland
| | - Fabio Benigni
- Humabs Biomed SA, a subsidiary of Vir Biotechnology, 6500 Bellinzona, Switzerland
| | - Fabrizia Zatta
- Humabs Biomed SA, a subsidiary of Vir Biotechnology, 6500 Bellinzona, Switzerland
| | | | - Jessica Bassi
- Humabs Biomed SA, a subsidiary of Vir Biotechnology, 6500 Bellinzona, Switzerland
| | - Kaitlin R Sprouse
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
| | - Amin Addetia
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
| | - John E Bowen
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
| | - Cameron Stewart
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
| | - Martina Giurdanella
- Humabs Biomed SA, a subsidiary of Vir Biotechnology, 6500 Bellinzona, Switzerland
| | - Christian Saliba
- Humabs Biomed SA, a subsidiary of Vir Biotechnology, 6500 Bellinzona, Switzerland
| | - Barbara Guarino
- Humabs Biomed SA, a subsidiary of Vir Biotechnology, 6500 Bellinzona, Switzerland
| | - Michael A Schmid
- Humabs Biomed SA, a subsidiary of Vir Biotechnology, 6500 Bellinzona, Switzerland
| | - Nicholas Franko
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, WA 98195, USA
| | - Jennifer Logue
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, WA 98195, USA
| | - Ha V Dang
- Vir Biotechnology, San Francisco, CA 94158, USA
| | | | | | | | | | | | - Jiayi Zhou
- Vir Biotechnology, San Francisco, CA 94158, USA
| | | | | | | | - Julia Noack
- Vir Biotechnology, San Francisco, CA 94158, USA
| | | | - Javier Janer
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Rana Abdelnabi
- Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, KU Leuven, 3000 Leuven, Belgium
| | - Piet Maes
- Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, KU Leuven, 3000 Leuven, Belgium
| | - Paolo Ferrari
- Faculty of Biomedical Sciences, Università della Svizzera italiana, Lugano, Switzerland
- Division of Nephrology, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Alessandro Ceschi
- Faculty of Biomedical Sciences, Università della Svizzera italiana, Lugano, Switzerland
- Clinical Trial Unit, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Division of Clinical Pharmacology and Toxicology, Institute of Pharmacological Sciences of Southern Switzerland, Ente Ospedaliero Cantonale, Lugano, Switzerland
- Department of Clinical Pharmacology and Toxicology, University Hospital Zurich, Zurich, Switzerland
| | - Olivier Giannini
- Faculty of Biomedical Sciences, Università della Svizzera italiana, Lugano, Switzerland
- Department of Medicine, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
| | - Guilherme Dias de Melo
- Institut Pasteur, Université de Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, Paris, F-75015, France
| | - Lauriane Kergoat
- Institut Pasteur, Université de Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, Paris, F-75015, France
| | - Hervé Bourhy
- Institut Pasteur, Université de Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, Paris, F-75015, France
| | - Johan Neyts
- Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, KU Leuven, 3000 Leuven, Belgium
| | | | | | | | - Sean P J Whelan
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Antonio Lanzavecchia
- Humabs Biomed SA, a subsidiary of Vir Biotechnology, 6500 Bellinzona, Switzerland
| | - Herbert W Virgin
- Vir Biotechnology, San Francisco, CA 94158, USA
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, MO, USA
- Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX, USA
| | - Luca Piccoli
- Humabs Biomed SA, a subsidiary of Vir Biotechnology, 6500 Bellinzona, Switzerland
| | - Helen Chu
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, WA 98195, USA
| | | | - Davide Corti
- Humabs Biomed SA, a subsidiary of Vir Biotechnology, 6500 Bellinzona, Switzerland
| | - David Veesler
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
- Howard Hughes Medical Institute, University of Washington, Seattle, WA 98195, USA
| |
Collapse
|
7
|
Jiji GW, Rajesh A, Durairaj PJ. CBIR-based diagnosis of dermatology. IJBET 2022. [DOI: 10.1504/ijbet.2022.123147] [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: 11/21/2022]
|
8
|
Rajesh A, Durairaj PJ, Jiji GW. CBIR-based diagnosis of dermatology. IJBET 2022. [DOI: 10.1504/ijbet.2022.10047788] [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: 11/21/2022]
|
9
|
Elmorsi R, Asaad M, Ferry AM, Rajesh A, Maricevich RS. How real is a virtual interview? Perspectives of orthopaedic surgery residency directors. Eur Rev Med Pharmacol Sci 2021; 25:7829-7832. [PMID: 34982444 DOI: 10.26355/eurrev_202112_27629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE As a result of COVID-19 pandemic, the 2021 US residency MATCH was devoid of the traditional in-person interviews. Herein, we assess the impact of Virtual Interviews (VIs) on resident selection, from the perspectives of Orthopedic Surgery (OS) Program Directors (PDs). MATERIALS AND METHODS A 14-item survey was sent to PDs of ACGME-accredited OS residencies. Questions were designed to assess the pros, cons, and robustness of VIs compared to their antecedent in-person format. RESULTS Forty-seven PDs responded to our survey. VIs antagonized PDs' ability to assess applicants' fit to program (76.6%), commitment to specialty (64%), and interpersonal skills (68.1%). This led to heavier dependence upon applicants' portfolios (64%). Almost all respondents (97.9%) found VIs to be more cost-efficient, saving a median of $3000 in interview-related expenses. Overall, only 8.5% of PDs were willing to conduct exclusive VIs in future cycles, compared to the majority in favor of dual formats (51.5%) or exclusive in-person interviews (40.4%). CONCLUSIONS VIs have been an overall success, making most PDs opt for dual interview formats in future cycles. How this technology is further implemented in the future remains to be seen.
Collapse
Affiliation(s)
- R Elmorsi
- Mansoura University, Faculty of Medicine, Dakahlia, Egypt.
| | | | | | | | | |
Collapse
|
10
|
Shakir SH, Rajesh A. Improved calendar disc scheduler for LTE advanced networks with HARQ. JHS 2021. [DOI: 10.3233/jhs-210656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Long Term Evolution Advanced (LTE-A) is a broadband wireless technology that supports variety of services with different data rate. In order to achieve this the evolved Node B (eNB) uses different features provided in the 3GPP standards. Features like Carrier Aggregation (CA), Multiple input and Multiple output (MIMO) and Hybrid Automatic Repeat Request (HARQ) help to increase the throughput and spectral efficiency. In this paper, a novel two-level calendar disc algorithm with HARQ is introduced at the eNB for effectively scheduling real time and non-real time traffic with different service types. The algorithm also uses a burst profile management module that analyzes the current user profile and notifies the scheduler about the need to change in profile based on power boosting. The Calendar Disc Scheduler (CDS) is improved by adding HARQ retransmission index as a parameter in calculating the metric weight. The scheduler was tested for both adaptive and non-adaptive methods of HARQ in both synchronous and asynchronous modes. The proposed improved CDS scheduler was simulated with LTESim simulator and compared with calendar disc algorithm without HARQ improvements. Results show that the proposed scheduling method provides increased performance in terms of goodput, delay and spectral efficiency.
Collapse
Affiliation(s)
| | - A. Rajesh
- K Ramakrishnan College of Engineering, Samayapuram, Tiruchirappalli, India – 621112
| |
Collapse
|
11
|
Rajesh A, Chang Y, Abedalthagafi MS, Wong-Beringer A, Love MI, Mangul S. Improving the completeness of public metadata accompanying omics studies. Genome Biol 2021; 22:106. [PMID: 33858487 PMCID: PMC8048353 DOI: 10.1186/s13059-021-02332-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 03/29/2021] [Indexed: 12/17/2022] Open
Affiliation(s)
- Anushka Rajesh
- Department of Pharmacology and Pharmaceutical Sciences, University of Southern California, Los Angeles, CA 90089 USA
| | - Yutong Chang
- Department of Pharmacology and Pharmaceutical Sciences, University of Southern California, Los Angeles, CA 90089 USA
| | - Malak S. Abedalthagafi
- Genomics Research Department, King Fahad Medical City and King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Annie Wong-Beringer
- Department of Clinical Pharmacy, University of Southern California, Los Angeles, CA 90089 USA
| | - Michael I. Love
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, NC 27516 USA
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC 27514 USA
| | - Serghei Mangul
- Department of Clinical Pharmacy, University of Southern California, Los Angeles, CA 90089 USA
| |
Collapse
|
12
|
Abhishek B, Ranjit S, Shankar T, Eappen G, Sivasankar P, Rajesh A. Hybrid PSO-HSA and PSO-GA algorithm for 3D path planning in autonomous UAVs. SN Appl Sci 2020. [DOI: 10.1007/s42452-020-03498-0] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
13
|
Hariharan S, Chikte K, Shankar T, Rajesh A, Fouziya Sulthana S. Optimization of feedback bits using firefly algorithm for interference reduction in LTE femtocell networks. Soft comput 2020. [DOI: 10.1007/s00500-020-04871-2] [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: 10/24/2022]
|
14
|
Hussain T, Lam V, Farhad M, Lee S, Stephenson JA, Kockelbergh R, Rajesh A. Can subcentimetre ultrasound detected angiomyolipomas be safely disregarded? Clin Radiol 2020; 75:287-292. [PMID: 31916983 DOI: 10.1016/j.crad.2019.12.006] [Citation(s) in RCA: 2] [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] [Received: 07/16/2019] [Accepted: 12/04/2019] [Indexed: 01/20/2023]
Abstract
AIM To optimise follow-up by dismissing lesions on baseline ultrasound (US) if renal lesions conform to US criteria of an angiomyolipoma (AML). METHOD AND MATERIALS The present study was a 10-year retrospective review of patients who were found to have incidental hyperechoic renal lesions on US to ascertain the outcome from subsequent imaging, clinical encounters, and cancer registrations. Exclusions included renal calculi, tuberous sclerosis, Von-Hippel-Lindau, or a known cancer. RESULTS After excluding 39 patients, 1,493 patients were identified. One hundred and sixty had more than one lesion with 87 patients having bilateral lesions. Regardless of indication, 889 patients had subsequent imaging within 5 years (59.5%). The average size of all AMLs was 13.2 mm. In the group with lesions that were <10 mm (807), 438 had imaging follow-up with an average follow-up time of 1.5 years. Mean lesion size in this group was 7 mm, with an average increase of <0.5 mm on follow-up. No lesions were found to be malignant on subsequent imaging nor did any of these patients have a subsequent renal cancer diagnosis registered at local multidisciplinary team meetings. CONCLUSION No incidental subcentimetre hyperechoic renal lesion with imaging characteristics of an AML demonstrated significant growth or developed into a malignancy on follow-up.
Collapse
Affiliation(s)
- T Hussain
- Department of Radiology, University Hospitals of Leicester NHS Trust, Leicester General Hospital, Gwendolen Road, Leicester LE5 4PW, UK
| | - V Lam
- Department of Radiology, University Hospitals of Leicester NHS Trust, Leicester General Hospital, Gwendolen Road, Leicester LE5 4PW, UK
| | - M Farhad
- Department of Radiology, University Hospitals of Leicester NHS Trust, Leicester General Hospital, Gwendolen Road, Leicester LE5 4PW, UK
| | - S Lee
- Department of Radiology, University Hospitals of Leicester NHS Trust, Leicester General Hospital, Gwendolen Road, Leicester LE5 4PW, UK
| | - J A Stephenson
- Department of Radiology, University Hospitals of Leicester NHS Trust, Leicester General Hospital, Gwendolen Road, Leicester LE5 4PW, UK
| | - R Kockelbergh
- Department of Urology, University Hospitals of Leicester NHS Trust, Leicester General Hospital, Gwendolen Road, Leicester LE5 4PW, UK
| | - A Rajesh
- Department of Radiology, University Hospitals of Leicester NHS Trust, Leicester General Hospital, Gwendolen Road, Leicester LE5 4PW, UK.
| |
Collapse
|
15
|
Annepu V, Rajesh A. An unmanned aerial vehicle-aided node localization using an efficient multilayer perceptron neural network in wireless sensor networks. Neural Comput Appl 2019. [DOI: 10.1007/s00521-019-04653-4] [Citation(s) in RCA: 10] [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: 11/28/2022]
|
16
|
Rajesh A, Mangamma G, Sairam T, Subramanian S. Probing host-guest interactions in hydroxyapatite intercalated graphene oxide nanocomposite: NMR and scanning probe microscopy studies. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.136636] [Citation(s) in RCA: 4] [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: 11/25/2022]
|
17
|
Dhanasekaran S, Rajesh A, Mathimani T, Melvin Samuel S, Shanmuganathan R, Brindhadevi K. Efficacy of crude extracts of Clitoria ternatea for antibacterial activity against gram negative bacterium (Proteus mirabilis). Biocatalysis and Agricultural Biotechnology 2019. [DOI: 10.1016/j.bcab.2019.101328] [Citation(s) in RCA: 1] [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: 02/08/2023]
|
18
|
|
19
|
Affiliation(s)
- T Barrett
- Department of Radiology, Addenbrooke's Hospital and the University of Cambridge, Cambridge, CB2 0QQ, UK.
| | - A Rajesh
- Department of Radiology, University Hospitals of Leicester NHS Trust, Gwendolen Road, Leicester, LE5 4PW, UK
| |
Collapse
|
20
|
Barrett T, Rajesh A, Rosenkrantz AB, Choyke PL, Turkbey B. PI-RADS version 2.1: one small step for prostate MRI. Clin Radiol 2019; 74:841-852. [PMID: 31239107 DOI: 10.1016/j.crad.2019.05.019] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Accepted: 05/30/2019] [Indexed: 12/19/2022]
Abstract
Multiparametric (mp) prostate magnetic resonance imaging (MRI) is playing an increasingly prominent role in the diagnostic work-up of patients with suspected prostate cancer. Performing mpMRI before biopsy offers several advantages including biopsy avoidance under certain clinical circumstances and targeting biopsy of suspicious lesions to enable the correct diagnosis. The success of the technique is heavily dependent on high-quality image acquisition, interpretation, and report communication, all areas addressed by previous versions of the Prostate Imaging-Reporting and Data System (PI-RADS) recommendations. Numerous studies have validated the approach, but the widespread adoption of PI-RADS version 2 has also highlighted inconsistencies and limitations, particularly relating to interobserver variability for evaluation of the transition zone. These limitations are addressed in the recently released version 2.1. In this article, we highlight the key changes proposed in PI-RADS v2.1 and explore the background reasoning and evidence for the recommendations.
Collapse
Affiliation(s)
- T Barrett
- Department of Radiology, Addenbrooke's Hospital and the University of Cambridge, Cambridge CB2 0QQ, UK.
| | - A Rajesh
- University Hospitals of Leicester NHS Trust, Leicester General Hospital, Radiology Department, Gwendolen Road, Leicester LE5 4PW, UK
| | - A B Rosenkrantz
- Department of Radiology, NYU School of Medicine, NYU Langone Medical Center, 660 1st Ave, Third Floor, New York, NY 10016, USA
| | - P L Choyke
- Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - B Turkbey
- Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| |
Collapse
|
21
|
Annepu V, Rajesh A. Implementation of self adaptive mutation factor and cross-over probability based differential evolution algorithm for node localization in wireless sensor networks. Evol Intel 2019. [DOI: 10.1007/s12065-019-00239-0] [Citation(s) in RCA: 10] [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: 11/29/2022]
|
22
|
Fouziya Sulthana S, Nakkeeran R, Shaffath Hussain Shakir S, Rajesh A. Investigation on resource scheduling with coexistence of unicast and multicast services in LTE OFDMA system. JHS 2018. [DOI: 10.3233/jhs-180587] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- S. Fouziya Sulthana
- Department of Electronics Engineering, Pondicherry University, Puducherry-14, India. E-mails: ,
| | - R. Nakkeeran
- Department of Electronics Engineering, Pondicherry University, Puducherry-14, India. E-mails: ,
| | | | - A. Rajesh
- School of Electronics Engineering, VIT University, Vellore-14, India. E-mails: ,
| |
Collapse
|
23
|
Ivan CV, Mullineux JH, Verma R, Shah V, De A, Elabassy M, Rajesh A, Stephenson JA. Reply to Akingboye et al. Colorectal Dis 2018; 20:76-77. [PMID: 29027365 DOI: 10.1111/codi.13916] [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] [Received: 10/03/2017] [Accepted: 10/03/2017] [Indexed: 02/08/2023]
Affiliation(s)
- C V Ivan
- Gastrointestinal Imaging Group, Department of Radiology, University Hospitals of Leicester, Leicester General Hospital, Leicester, UK
| | - J H Mullineux
- Gastrointestinal Imaging Group, Department of Radiology, University Hospitals of Leicester, Leicester General Hospital, Leicester, UK
| | - R Verma
- Gastrointestinal Imaging Group, Department of Radiology, University Hospitals of Leicester, Leicester General Hospital, Leicester, UK
| | - V Shah
- Gastrointestinal Imaging Group, Department of Radiology, University Hospitals of Leicester, Leicester General Hospital, Leicester, UK
| | - A De
- Gastrointestinal Imaging Group, Department of Radiology, University Hospitals of Leicester, Leicester General Hospital, Leicester, UK
| | - M Elabassy
- Gastrointestinal Imaging Group, Department of Radiology, University Hospitals of Leicester, Leicester General Hospital, Leicester, UK
| | - A Rajesh
- Gastrointestinal Imaging Group, Department of Radiology, University Hospitals of Leicester, Leicester General Hospital, Leicester, UK
| | - J A Stephenson
- Gastrointestinal Imaging Group, Department of Radiology, University Hospitals of Leicester, Leicester General Hospital, Leicester, UK
| |
Collapse
|
24
|
Markandeya SV, Renuka C, Lakshmi PK, Rajesh A, Sridhar C, Babu KR. Design and applications of new phosphine-free tetradentate Pd-catalyst: Regioselective C–H activation on 1-substituted 1,2,3-triazoles and indoles(NH-Free). SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2017.1381260] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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]
Affiliation(s)
- Sarma V. Markandeya
- Department of Medicinal Chemistry, GVK Biosciences Pvt. Ltd, IDA, Hyderabad, Telangana, India
- Department of Engineering Chemistry, Andhra University, Visakhapatnam, AP, India
| | - Ch. Renuka
- Department of Medicinal Chemistry, GVK Biosciences Pvt. Ltd, IDA, Hyderabad, Telangana, India
- Department of Engineering Chemistry, Andhra University, Visakhapatnam, AP, India
| | - Parvathi K. Lakshmi
- Department of Medicinal Chemistry, GVK Biosciences Pvt. Ltd, IDA, Hyderabad, Telangana, India
- Department of Engineering Chemistry, Andhra University, Visakhapatnam, AP, India
| | - A. Rajesh
- Department of Medicinal Chemistry, GVK Biosciences Pvt. Ltd, IDA, Hyderabad, Telangana, India
- Department of Engineering Chemistry, Andhra University, Visakhapatnam, AP, India
| | - Chidara Sridhar
- Department of Medicinal Chemistry, GVK Biosciences Pvt. Ltd, IDA, Hyderabad, Telangana, India
| | - Korupolu Raghu Babu
- Department of Engineering Chemistry, Andhra University, Visakhapatnam, AP, India
| |
Collapse
|
25
|
Ivan CV, Mullineux JH, Verma R, Shah V, De A, Elabassy M, Rajesh A, Stephenson JA. Assessment of the inferior mesenteric vein diameter as a surrogate marker to evaluate response to neoadjuvant chemoradiotherapy for locally advanced rectal adenocarcinoma. Colorectal Dis 2017; 19:1076-1080. [PMID: 28696522 DOI: 10.1111/codi.13811] [Citation(s) in RCA: 4] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 05/17/2017] [Indexed: 02/08/2023]
Abstract
AIM Neoadjuvant chemoradiotherapy for locally advanced rectal cancer aims to downstage prior to definitive management. Repeat imaging assessment of the tumour post-therapy has implications for treatment. Our aim was to assess if the inferior mesenteric vein (IMV) diameter measured on CT can be used as a surrogate marker for evaluation of tumour response to neoadjuvant treatment. METHOD IMV diameter was assessed in patients with and without locally advanced rectal cancer, pre- and post-radiotherapy, to ascertain if IMV diameter is a surrogate marker of tumour response. RESULTS IMV diameter was 5.9 mm in patients with rectal cancer vs 4.7 mm in patients without (P = 0.0001). The baseline IMV diameter was significantly higher for cases with local lymphadenopathy [N0 5.2 mm vs N1/2 6 mm (P = 0.0059)] and extramural venous invasion (EMVI) [negative 5.4 mm vs positive 6.4 mm (P = 0.0001)]. Post-radiotherapy there was a significant decrease in the IMV diameter in cases with treatment response compared to non-responders: the percentage change in IMV diameter was a 17.54% decrease vs 1.39% increase (P = 0.0001). These results were reproduced on comparing between magnetic resonance tumour regression grades using ANOVA (P = 0.0001). There was also a significant decrease in IMV diameter when assessing lymph node (LN) and EMVI response vs non-responders (P = 0.0001 and 0.0001 respectively). CONCLUSION Patients with rectal cancer have a dilated IMV compared with patients without rectal cancer. We confirm that IMV diameter is a potential surrogate marker of LN status and EMVI at baseline. IMV diameter is also a marker of tumour, LN and EMVI response to chemoradiotherapy.
Collapse
Affiliation(s)
- C V Ivan
- Gastrointestinal Imaging Group, Department of Radiology, University Hospitals of Leicester, Leicester General Hospital, Leicester, UK
| | - J H Mullineux
- Gastrointestinal Imaging Group, Department of Radiology, University Hospitals of Leicester, Leicester General Hospital, Leicester, UK
| | - R Verma
- Gastrointestinal Imaging Group, Department of Radiology, University Hospitals of Leicester, Leicester General Hospital, Leicester, UK
| | - V Shah
- Gastrointestinal Imaging Group, Department of Radiology, University Hospitals of Leicester, Leicester General Hospital, Leicester, UK
| | - A De
- Gastrointestinal Imaging Group, Department of Radiology, University Hospitals of Leicester, Leicester General Hospital, Leicester, UK
| | - M Elabassy
- Gastrointestinal Imaging Group, Department of Radiology, University Hospitals of Leicester, Leicester General Hospital, Leicester, UK
| | - A Rajesh
- Gastrointestinal Imaging Group, Department of Radiology, University Hospitals of Leicester, Leicester General Hospital, Leicester, UK
| | - J A Stephenson
- Gastrointestinal Imaging Group, Department of Radiology, University Hospitals of Leicester, Leicester General Hospital, Leicester, UK
| |
Collapse
|
26
|
Rajesh A, Mangamma G, Sairam T, Subramanian S, Kalavathi S, Kamruddin M, Dash S. Physicochemical properties of nanocomposite: Hydroxyapatite in reduced graphene oxide. Materials Science and Engineering: C 2017; 76:203-210. [DOI: 10.1016/j.msec.2017.02.044] [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] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 12/05/2016] [Accepted: 02/10/2017] [Indexed: 10/20/2022]
|
27
|
Rajesh A, Yenugu S. shRNA mediated ablation of prostate and testis expressed (Pate
) messenger RNA results in impaired sperm function and fertility. Andrology 2017; 5:541-547. [DOI: 10.1111/andr.12321] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 10/26/2016] [Accepted: 11/30/2016] [Indexed: 12/17/2022]
Affiliation(s)
- A. Rajesh
- Department of Animal Biology; University of Hyderabad; Gachibowli Hyderabad India
| | - S. Yenugu
- Department of Animal Biology; University of Hyderabad; Gachibowli Hyderabad India
| |
Collapse
|
28
|
Abstract
Kimura's disease (KD) is a rare chronic inflammatory disease of subcutaneous tissues and occurs predominantly in head and neck region. It is seen primarily in young Asian males. Typical clinical presentations are painless subcutaneous masses, regional lymph node enlargement, blood and tissue hypereosinophilia, and increased serum IgE levels. Here, we present a case of a 27-year-old female who presented with unilateral single nodular swelling in the right postauricular region. The diagnosis of KD was done based on characteristic histopathologic finding in conjunction with peripheral eosinophilia and increase in serum IgE levels.
Collapse
Affiliation(s)
- A Rajesh
- Department of Oral and Maxillofacial Pathology, CKS Theja Institute of Dental Sciences and Research, Tirupathi, Andhra Pradesh, India
| | - T Prasanth
- Department of Oral and Maxillofacial Pathology, CKS Theja Institute of Dental Sciences and Research, Tirupathi, Andhra Pradesh, India
| | - V C Naga Sirisha
- Department of Oral and Maxillofacial Pathology, CKS Theja Institute of Dental Sciences and Research, Tirupathi, Andhra Pradesh, India
| | - Mds Azmi
- Department of Oral and Maxillofacial Pathology, CKS Theja Institute of Dental Sciences and Research, Tirupathi, Andhra Pradesh, India
| |
Collapse
|
29
|
Abstract
Central mucoepidermoid carcinomas (MECs) are extremely rare tumors, comprising 2-3% of all MECs reported in the literature. We report a rare case of clear cell variant of central MEC with calcifications occurring in the left posterior mandible in a 37-year-old male patient.
Collapse
Affiliation(s)
- Naga Sirisha Venkata Chundru
- Department of Oral and Maxillofacial Pathology, CKS Theja Institute of Dental Sciences and Research, Tirupathi, Andhra Pradesh, India
| | | | | | | |
Collapse
|
30
|
Karri SB, Uppin MS, Rajesh A, Ashish K, Bhattacharjee S, Rani YJ, Sahu BP, Saradhi MV, Purohit AK, Challa S. Vascular malformations of central nervous system: A series from tertiary care hospital in South India. J Neurosci Rural Pract 2016; 7:262-8. [PMID: 27114659 PMCID: PMC4821936 DOI: 10.4103/0976-3147.176196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Aims and Objectives: To describe clinicopathological features of surgically resected vascular malformations (VMs) of central nervous system (CNS). Materials and Methods: Histologically diagnosed cases of VMs of CNS during April 2010–April 2014 were included. Demographic data, clinical and radiological features were obtained. Hematoxylin and eosin slides were reviewed along with Verhoeff-Van Gieson (VVG), Masson's trichrome, periodic acid-Schiff, and Perls' stains. Morphologically, cavernomas and arteriovenous malformations (AVMs) were distinguished on the basis of vessel wall features on VVG and intervening glial parenchyma. Results: Fifty cases were diagnosed as VMs of CNS with an age range of 14–62 years. These included 36 cavernomas, 12 AVMs, 2 mixed capillary-cavernous angiomas. Most of the cavernoma patients (15/36) presented with seizures, whereas AVM patients (8/12) had a headache as the dominant symptom. Twenty-nine patients were reliably diagnosed on radiological features. Microscopic evidence of hemorrhage was seen in 24/36 cavernomas and 6/12 AVMs, as opposed to radiologic evidence of 10 and 4, respectively. Reactive gliosis was seen in 16 cavernomas. Conclusions: Histological features are important for classifying the VMs of CNS as there are no specific clinical and radiological features. Type of VM has a bearing on management, prognosis, and risk of hemorrhage.
Collapse
Affiliation(s)
- Sudhir Babu Karri
- Department of Pathology, Nizam's Institute of Medical Sciences, Hyderabad, Telangana, India
| | - Megha S Uppin
- Department of Pathology, Nizam's Institute of Medical Sciences, Hyderabad, Telangana, India
| | - A Rajesh
- Department of Neurosurgery, Nizam's Institute of Medical Sciences, Hyderabad, Telangana, India
| | - K Ashish
- Department of Neurosurgery, Nizam's Institute of Medical Sciences, Hyderabad, Telangana, India
| | - Suchanda Bhattacharjee
- Department of Neurosurgery, Nizam's Institute of Medical Sciences, Hyderabad, Telangana, India
| | - Y Jyotsna Rani
- Department of Radiology and Imageology, Nizam's Institute of Medical Sciences, Hyderabad, Telangana, India
| | - B P Sahu
- Department of Neurosurgery, Nizam's Institute of Medical Sciences, Hyderabad, Telangana, India
| | - M Vijaya Saradhi
- Department of Neurosurgery, Nizam's Institute of Medical Sciences, Hyderabad, Telangana, India
| | - A K Purohit
- Department of Neurosurgery, Nizam's Institute of Medical Sciences, Hyderabad, Telangana, India
| | - Sundaram Challa
- Department of Pathology, Nizam's Institute of Medical Sciences, Hyderabad, Telangana, India
| |
Collapse
|
31
|
Thabitha RS, Reddy RE, Manjula M, Sreelakshmi N, Rajesh A, Kumar VL. Evaluation of palatal rugae pattern in establishing identification and sex determination in Nalgonda children. J Forensic Dent Sci 2016; 7:232-7. [PMID: 26816465 PMCID: PMC4714413 DOI: 10.4103/0975-1475.172447] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 11/04/2022] Open
Abstract
BACKGROUND Establishing individual identification of a decedent only by dental means is a mammoth task in forensic odontology. Palatal rugae's uniqueness, its resistance to heat, and stability throughout life have been proved by its use as an alternative aid in individual identification where comparison of fingerprints and other records is difficult. AIMS AND OBJECTIVES The aim of the present study was to analyze the role of palatal rugoscopy in personal identification and sex determination of Nalgonda pediatric population. MATERIALS AND METHODS The study group consisted of 100 children having mixed dentition within the age range of 8-11 years, residing in Nalgonda district. Palatal rugae pattern, shape of the incisive papillae, length of the median palatal raphae, and shape of the dental arches were analyzed using Chi-square and Mann-Whitney tests between males and females. RESULTS Wavy and curved patterns appeared to be most prevalent in both males and females but with no significant difference. The number of primary rugae in females and secondary rugae in males, on left side of the palate, was significantly more than their counterparts (P < 0.05). When rugae unification was observed, diverging type was significantly more in males than in females. Parabolic dental arch form, elliptical type of incisive papilla, and medium length of median palatal raphae was observed in majority of the subjects. CONCLUSION The present study hypothesizes the uniqueness of the rugae in personal identification as no two palates showed similar type of rugae in either of the genders. The rugae pattern also contributes minimally towards sex determination as there was no significant difference observed between the two variables.
Collapse
Affiliation(s)
- Rani S Thabitha
- Department of Pedodontics and Preventive Dentistry, Kamineni Institute of Dental Sciences, Narketpally, Nalgonda, Andhra Pradesh, India
| | - Rajendra E Reddy
- Department of Pedodontics and Preventive Dentistry, Kamineni Institute of Dental Sciences, Narketpally, Nalgonda, Andhra Pradesh, India
| | - M Manjula
- Department of Pedodontics and Preventive Dentistry, Kamineni Institute of Dental Sciences, Narketpally, Nalgonda, Andhra Pradesh, India
| | - N Sreelakshmi
- Department of Pedodontics and Preventive Dentistry, Kamineni Institute of Dental Sciences, Narketpally, Nalgonda, Andhra Pradesh, India
| | - A Rajesh
- Department of Pedodontics and Preventive Dentistry, Kamineni Institute of Dental Sciences, Narketpally, Nalgonda, Andhra Pradesh, India
| | - Vinay L Kumar
- Department of Pedodontics and Preventive Dentistry, Kamineni Institute of Dental Sciences, Narketpally, Nalgonda, Andhra Pradesh, India
| |
Collapse
|
32
|
|
33
|
Hall TC, Stephenson JS, Jones MJ, Ngu WS, Horsfield MA, Rajesh A, Dennison AR, Garcea G. Is Abdominal Fat Distribution Measured by Axial CT Imaging an Indicator of Complications and Mortality in Acute Pancreatitis? J Gastrointest Surg 2015; 19:2126-31. [PMID: 26443529 DOI: 10.1007/s11605-015-2972-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 09/25/2015] [Indexed: 01/31/2023]
Abstract
BACKGROUND Obesity is an important risk-stratifying co-morbidity for many pathological conditions. Controversy exists about its influence in outcomes after acute pancreatitis (AP). This study assessed abdominal fat distribution (subcutaneous, retroperitoneal and intra-abdominal) measured using computer tomography (CT) images and related it to outcomes in patients with AP. METHODS The case notes of patients admitted with AP were identified from computerised records from 2008 to the 2013. Image analysis software was used to assess the individual abdominal fat distributions from CT images. RESULTS A total of 79 patients were included. There was no relationship between fat distribution and either severity of, or mortality from, AP. Fat distribution was not found to be an independent risk factor on multivariate analysis. There was, however, a positive correlation between retroperitoneal and intra-abdominal fat with APACHE II scores, Ranson and Glasgow score and Multiple Organ Dysfunction score (MODS) on various days following admission (r = 0.421, p = 0.0008; r = 0.469, p < 0.0001; r = 0.398, p = 0.007; r = 0.336, p = 0.011, respectively). On multiple logistical regression analysis, the only variables associated with mortality were Balthazar Severity Index, MODS and EWS with a p value of <0.0001, 0.0019 and 0.0481, respectively. CONCLUSIONS Obese patients have worse predicted outcomes as measured by the EWS, MODS and Ranson scores. Abdominal fat distribution, however, was not shown to be directly related to AP severity or mortality. The addition of fat parameters may be of use in prognostic CT severity index models, but from this data, it does not appear to be an independent risk factor of adverse outcome.
Collapse
Affiliation(s)
- T C Hall
- Department of Hepatobiliary and Pancreatic Surgery, Leicester General Hospital, University Hospitals of Leicester, Leicester, LE5 4PW, UK.
| | - J S Stephenson
- Department of Hepatobiliary and Pancreatic Surgery, Leicester General Hospital, University Hospitals of Leicester, Leicester, LE5 4PW, UK
| | - M J Jones
- Department of Hepatobiliary and Pancreatic Surgery, Leicester General Hospital, University Hospitals of Leicester, Leicester, LE5 4PW, UK
| | - W S Ngu
- Department of Hepatobiliary and Pancreatic Surgery, Leicester General Hospital, University Hospitals of Leicester, Leicester, LE5 4PW, UK
| | - M A Horsfield
- Department of Hepatobiliary and Pancreatic Surgery, Leicester General Hospital, University Hospitals of Leicester, Leicester, LE5 4PW, UK
| | - A Rajesh
- Department of Hepatobiliary and Pancreatic Surgery, Leicester General Hospital, University Hospitals of Leicester, Leicester, LE5 4PW, UK
| | - A R Dennison
- Department of Hepatobiliary and Pancreatic Surgery, Leicester General Hospital, University Hospitals of Leicester, Leicester, LE5 4PW, UK
| | - G Garcea
- Department of Hepatobiliary and Pancreatic Surgery, Leicester General Hospital, University Hospitals of Leicester, Leicester, LE5 4PW, UK
| |
Collapse
|
34
|
Rajesh A, Dutta A, Gurunathan K, Sinha TP. Dielectric Relaxation of NiFe2O4/Gd2O3 Core-Shell Nanoparticles. J Nanosci Nanotechnol 2015; 15:6082-6087. [PMID: 26369202 DOI: 10.1166/jnn.2015.10278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Gd2O3 encapsulated NiFe2O4 core-shell nano-particles (CSNPs) have been synthesized by chemical route. The phase formation of the materials is confirmed by X-ray diffraction analysis. The average particle size is found to be 60 nm by transmission electron microscope. The band gap of NiFe2O4/Gd2O3 CSNPs is obtained by UV-visible absorption spectroscopy. The observed band gap of 4.38 eV lies in between the individual band gap of Gd2O3 and NiFe2O4. The frequency-dependent dielectric relaxation of the material is investigated in the temperature range from 303 K to 543 K. The temperature dependent relaxation times are found to obey Arrhenius law having activation energy of 0.3 eV. The Nyquist plots of impedance data are analyzed by the RC equivalent circuit having a constant phase element. The dielectric relaxation is modelled by Havriliak-Negami technique in the electric modulus formalism. The frequency dependent conductivity spectra follow the double power law.
Collapse
|
35
|
Hall T, Stephenson J, Rangaraj A, Mulcahy K, Rajesh A. Imaging protocol for suspected ureteric calculi in patients presenting to the emergency department. Clin Radiol 2015; 70:243-7. [DOI: 10.1016/j.crad.2014.10.013] [Citation(s) in RCA: 7] [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] [Received: 06/05/2014] [Revised: 09/29/2014] [Accepted: 10/22/2014] [Indexed: 10/24/2022]
|
36
|
Biswas B, Bhushan S, Rajesh A, Suraj SK, Lu Y, Meinhardt A, Yenugu S. UropathogenicEscherichia coli(UPEC) induced antimicrobial gene expression in the male reproductive tract of rat: evaluation of the potential of Defensin 21 to limit infection. Andrology 2015; 3:368-75. [DOI: 10.1111/andr.12012] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 12/25/2014] [Accepted: 12/30/2014] [Indexed: 01/19/2023]
Affiliation(s)
- B. Biswas
- Department of Animal Biology; School of Life Sciences; University of Hyderabad; Hyderabad Andhra Pradesh India
| | - S. Bhushan
- Department of Anatomy and Cell Biology; Justus-Liebig-University Giessen; Giessen Germany
| | - A. Rajesh
- Department of Animal Biology; School of Life Sciences; University of Hyderabad; Hyderabad Andhra Pradesh India
| | - S. K. Suraj
- Department of Biotechnology; School of Life Sciences; University of Hyderabad; Hyderabad Andhra Pradesh India
| | - Y. Lu
- Department of Anatomy and Cell Biology; Justus-Liebig-University Giessen; Giessen Germany
| | - A. Meinhardt
- Department of Anatomy and Cell Biology; Justus-Liebig-University Giessen; Giessen Germany
| | - S. Yenugu
- Department of Animal Biology; School of Life Sciences; University of Hyderabad; Hyderabad Andhra Pradesh India
| |
Collapse
|
37
|
Rajesh A, Raja MM, Gurunathan K. Structural and Magnetic Studies of Hydroxyapatite—Encapsulated γ-Fe2O3 Core–Shell Nanoparticles. ACTA ACUST UNITED AC 2014. [DOI: 10.1166/asem.2014.1632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
38
|
Rajesh A, Raja MM, Saha S, Sinha TP, Gurunathan K. Synthesis, Physico-Chemical and Electrical Characterizations of Graphene Oxide–Hydroxyapatite Nanocomposites. ACTA ACUST UNITED AC 2014. [DOI: 10.1166/asem.2014.1614] [Citation(s) in RCA: 5] [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: 11/23/2022]
|
39
|
Praveen-Kumar S, Rajesh A. Palinopsia without visual field defect: case report and minireview. Clin Neurol Neurosurg 2014; 125:207-9. [PMID: 25178913 DOI: 10.1016/j.clineuro.2014.07.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 04/02/2014] [Accepted: 07/18/2014] [Indexed: 10/24/2022]
Affiliation(s)
- S Praveen-Kumar
- Department of Neurology, Bowring & Lady Curzon Hospitals, Bangalore, India.
| | - A Rajesh
- Department of Neurology, Bowring & Lady Curzon Hospitals, Bangalore, India.
| |
Collapse
|
40
|
Hasanuddin S, Reddy ER, Manjula M, Srilaxmi N, Rani ST, Rajesh A. Retention of fissure sealants in young permanent molars affected by dental fluorosis: a 12-month clinical study. Eur Arch Paediatr Dent 2014; 15:309-15. [DOI: 10.1007/s40368-014-0116-1] [Citation(s) in RCA: 7] [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] [Received: 12/02/2013] [Accepted: 01/22/2014] [Indexed: 11/28/2022]
|
41
|
S N B, Rajesh A, P NR, Kamal F. Mandibular aneurysmal bone cyst associated with cemento-ossifying fibroma - a case report. J Clin Diagn Res 2014; 7:3092-3. [PMID: 24551739 DOI: 10.7860/jcdr/2013/6981.3864] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Accepted: 10/27/2013] [Indexed: 11/24/2022]
Abstract
Aneurysmal bone cyst is an uncommon bone lesion which rarely occurs in craniofacial region. Among all the cystic lesions occurring in the jaws, aneurysmal bone cyst is infrequent and it more commonly occurs in the mandible. Most of the cases occur in the first two decades of life, with no gender predilection. Here, we are presenting a case of an aneurysmal bone cyst which occurred in the mandible of a twelve year old female patient.
Collapse
Affiliation(s)
- Bhavani S N
- Senior Lecturer, SVS Institute of Dental Sciences Andhra Pradesh, India
| | - A Rajesh
- Reader, CKS Teja Institute of Dental Sciences , Andhra Pradesh, India
| | | | - Firoz Kamal
- Senior Lecturer, Nrayana Dental College , Andhra Pradesh, India
| |
Collapse
|
42
|
Praveen NC, Rajesh A, Madan M, Chaurasia VR, Hiremath NV, Sharma AM. In vitro Evaluation of Antibacterial Efficacy of Pineapple Extract (Bromelain) on Periodontal Pathogens. J Int Oral Health 2014; 6:96-8. [PMID: 25395802 PMCID: PMC4229839] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 06/09/2014] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Periodontitis is an inflammatory disease resulting in the destruction of periodontal tissues. Various treatment modalities have been tried in the form of mechanical therapy and surgical therapy. Antimicrobial agents have been used as a monotherapy and as an adjunct with mechanical debridement. Various plant extracts have been used as antibacterial agents. Pineapple extract (bromelian) is one such agent. Hence this study was conducted to assess the antibacterial efficacy of bromelain on both aerobic and anaerobic periodontal microorganisms. The aim was to assess the antibacterial efficacy of bromelain on both aerobic and anaerobic periodontal microorganisms. MATERIALS AND METHODS Minimum inhibitory concentration (MIC) of bromelain was tested on isolated strains of Streptococcus mutans, Enterococcus fecalis Aggregatibacter actinomycetemcomitans (Aa), and Porphyromonas gingivalis (Pg) using serial dilution broth method. RESULTS S. mutans showed sensitivity at the lowest concentration of 2 mg/ml as compared to E fecalis (31.25 mg/ml) while Pgingivalis showed sensitivity at the lowest concentration of 4.15 mg/ml as compared to Aa (16.6 mg/ml). CONCLUSION Bromelain exerts an antibacterial effect against potent periodontal pathogens; hence, it may be used as an antibacterial agent. However, further trial has to be conducted to validate this result.
Collapse
Affiliation(s)
- N C Praveen
- Assistant Professor, Department of Periodontics, College of Dental Sciences, Davangere, Karnataka, India,Correspondence: Dr. Praveen NC. Assistant Professor, Department of Periodontics, College of Dental Sciences, Davanagere, Karnataka, India.
| | - A Rajesh
- Reader, Department of Periodontics, KGF College of Dental Sciences, KGF, Karnataka, India
| | - Manish Madan
- Professor, Department of Pedodontics, MM College of Dental Sciences, Mullana, Haryana, India
| | | | - Neel V Hiremath
- Assistant Professor, Department of Conservative Dentistry and Endodontics, College of Dental Sciences, Davanagere, Karnataka, India
| | | |
Collapse
|
43
|
Manjula M, Rajesh A, Rani ST, Reddy ER, Sreelakshmi N, David S. Applicability of tooth size predictions in the mixed dentition space analysis in Nalgonda population. J NTR Univ Health Sci 2013. [DOI: 10.4103/2277-8632.122165] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
|
44
|
Abstract
Intracranial arachnoid cysts developing in relation to the cerebral hemispheres and middle cranial fossa are usually incidental or asymptomatic. However, most of the clinically active cysts present with seizures because of chronic compression. Presentation as raised intracranial pressure due to cyst rupture into the subdural space is a rare clinical entity. We herein present a case of an asymptomatic arachnoid cyst with rupture into the subdural space bilaterally and presenting as raised intracranial pressure.
Collapse
Affiliation(s)
- A Rajesh
- Department of Neurosurgery, Nizam's Institute of Medical Sciences, Punjagutta, Hyderabad, India
| | | | | |
Collapse
|
45
|
Sinha R, Rajesh A, Rawat S, Rajiah P, Ramachandran I. Infections and infestations of the gastrointestinal tract. Part 1: bacterial, viral and fungal infections. Clin Radiol 2012; 67:484-94. [PMID: 22257535 DOI: 10.1016/j.crad.2011.10.021] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Revised: 09/23/2011] [Accepted: 10/12/2011] [Indexed: 01/03/2023]
Abstract
The purpose of this article is to review the imaging findings of various infections affecting the gastrointestinal tract. Barium examinations, computed tomography (CT), magnetic resonance imaging (MRI), and ultrasonography all play an important role in the diagnostic workup of gastrointestinal tract infections. Knowledge of differential diagnosis, sites of involvement, and typical imaging features of different infections can help in accurate diagnosis and guide treatment.
Collapse
Affiliation(s)
- R Sinha
- Department of Clinical Radiology, South Warwickshire NHS Foundation Trust, Warwick, UK.
| | | | | | | | | |
Collapse
|
46
|
Sinha R, Rajesh A, Rawat S, Rajiah P, Ramachandran I. Infections and infestations of the gastrointestinal tract. Part 2: parasitic and other infections. Clin Radiol 2011; 67:495-504. [PMID: 22169349 DOI: 10.1016/j.crad.2011.10.022] [Citation(s) in RCA: 7] [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] [Received: 06/08/2011] [Revised: 09/23/2011] [Accepted: 10/12/2011] [Indexed: 11/24/2022]
Abstract
The purpose of this article is to provide a comprehensive review of the imaging findings of various parasitic infestations and other miscellaneous infections affecting the gastrointestinal tract. Barium examinations play an important role in the diagnostic workup of parasitic intestinal infections. Knowledge of differential diagnosis, sites of involvement, and imaging features of different infections and infestations can help in accurate diagnosis and guide treatment.
Collapse
Affiliation(s)
- R Sinha
- Department of Clinical Radiology, South Warwickshire NHS Foundation Trust, Warwick, UK.
| | | | | | | | | |
Collapse
|
47
|
Hall TC, Garcea G, Rajesh A, Dennison AR. Pancreaticogastric fistula secondary to intraductal papillary mucinous neoplasia: a case report and review of the literature. Ann R Coll Surg Engl 2011; 93:e32-4. [PMID: 21943443 DOI: 10.1308/147870811x580497] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Intraductal papillary mucinous neoplasms (IPMNs) are benign cystic lesions of the pancreas with recognised premalignant potential. An occasional feature of IPMNs is fistula formation to surrounding organs. This report describes a case of a pancreaticogastric fistula from a main duct IPMN that produced the complete resolution of the patient's symptoms.
Collapse
Affiliation(s)
- T C Hall
- Department of Hepatobiliary and Pancreatic Surgery, Leicester General Hospital, UK.
| | | | | | | |
Collapse
|
48
|
Lakshmi V, Umabala P, Anuradha K, Padmaja K, Padmasree C, Rajesh A, Purohit AK. Microbiological spectrum of brain abscess at a tertiary care hospital in South India: 24-year data and review. Patholog Res Int 2011; 2011:583139. [PMID: 22191080 PMCID: PMC3236371 DOI: 10.4061/2011/583139] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/24/2010] [Accepted: 09/15/2011] [Indexed: 02/01/2023]
Abstract
Intracranial abscesses are life-threatening infections that pose a diagnostic challenge not only to the neurosurgeon but also to the microbiologists. Detailed studies documenting the spectrum of infecting agents involved in brain abscesses are limited from India. Materials and Methods. This is a retrospective analysis of 352 samples from 1987 to 2010 analyzed at a tertiary care hospital in South India from 1987 to 2010, to document the changing trends with time. Results. The age of the patients ranged from 2 to 80 years, a larger number of males being affected. Otogenic infections were the most common cause while cryptogenic abscesses were 20%. Gram stain and culture positivity were 78% each. Gram-positive and negative facultative aerobes and obligate anaerobes were also on the rise. Unusual organisms, like Burkholderia pseudomallei, Salmonella typhi, Nocardia species, Cladosporium bantiana, Fonsecaea pedrosoi, Entamoeba histolytica, and Acanthamoeba were also isolated and/or detected from the brain abscesses aspirate or resected tissue. Summary. New and emerging pathogens associated with brain abscess, especially in immunosuppressed individuals, have renewed the necessity of an early detection, and it will be of great value in appropriate management of patients with brain abscess.
Collapse
Affiliation(s)
- V Lakshmi
- Department of Microbiology, Nizam's Institute of Medical Sciences, Panjagutta, Hyderabad, Andhra Pradesh 500082, India
| | | | | | | | | | | | | |
Collapse
|
49
|
Rajesh A, Sivaram S. Polymerization of ethylene using amido functional half-sandwich complexes of group 4 metals. POLYM ENG SCI 2011. [DOI: 10.1002/pen.22132] [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: 11/07/2022]
|
50
|
Elmussareh M, De A, Rajesh A, Khan M. UP-01.154 Bosniak IIF and III Complex Renal Cysts: Radiological and Clinical Outcomes. Urology 2011. [DOI: 10.1016/j.urology.2011.07.706] [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: 10/15/2022]
|