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2. Standards of Practice Among Endodontists in Kerala, India An Exploratory Study

Author

Asha Joseph, Venkitachalam Ramanarayanan, Krishnan Venugopal, V. P. Singh Prabath, Kavitha Dhruvan, and Krishna Sagar

Subjects
endodontists, isolation, practice standards, Medicine
Abstract

Background: The field of endodontics is greatly evolving with the brisk entry of not just new materials but also numerous technology-based advances. Factors governed by the practitioner such as the canal preparation technique, the disinfection regimes followed, the standard of obturation, and the quality of coronal and apical seal all in turn greatly influence the prognosis of the endodontic treatment. Objective: To assess the attitude concerning the materials and techniques used during endodontic treatment among the endodontists in Kerala. Materials and Methods: An online questionnaire-based cross-sectional study was done among endodontists in Kerala. The questionnaire assessed several key aspects of endodontic practice. A comparison was made based on the nature of practice and years of practice. Results: A total of 165 responses were obtained. A high percentage of participants (>75%) routinely employed preoperative radiographs. A combination of apex locators along with radiographs was most preferred for working length determination, and calcium hydroxide was the most preferred root canal sealant. Almost half of the endodontists did not use any form of magnification. Conclusion: Despite several booming advances in technology, endodontists still do not strictly follow the implementation of important regimes such as the incorporation of magnification or use of a rubber dam in their practice, which still needs to be meticulously incorporated into practice, which would raise the standards of clinical practice.

Published
2022
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3. COVID-19 antibody tests: An overview

Author

Arjun B Ravi, V P Prabath Singh, Roshni Chandran, Krishnan Venugopal, Kaushik Haridas, and R Kavitha

Subjects
antibody tests, coronavirus disease 2019, severe acute respiratory syndrome coronavirus-2, serology tests, Pharmacy and materia medica, RS1-441, Analytical chemistry, QD71-142
Abstract

Novel coronavirus (nCoV) first emerged in Hubei province of China in December 2019. The virus initially known as 2019-nCoV was renamed to severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) by the International Committee on Taxonomy of Viruses. The associated disease is known as coronavirus disease 2019 (COVID-19). As the COVID-19 pandemic has unfolded, interest has grown in antibody testing as a way to measure how far the infection has spread and to identify individuals who may be immune. Molecular diagnostic tests like polymerase chain reaction are developed rapidly, however they are not able to fulfill all the requirements of an epidemic reaction. Hence, to complement molecular diagnostic tests, serology tests emerged as a vital aspect of the overall response by confirming the presence of antibodies during the early stage of the infection. Antibody tests help in assessing herd immunity, data about the ongoing phase of infection, identifying potential donors for convalescent plasma therapy, etc. This review currently focuses on giving an overview about the antibody tests in SARS-CoV-2 infections.

Published
2021
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4. A comparative evaluation of microleakage between resin-modified glass ionomer, flowable composite, and cention-N in Class V restorations: A confocal laser scanning microscope study

Author

Krishnan Venugopal, L Krishnaprasad, V P Prabath Singh, Arjun B Ravi, Kaushik Haridas, and Drisya Soman

Subjects
cention n, flowable composite, microleakage, resin modified glass ionomer, Pharmacy and materia medica, RS1-441, Analytical chemistry, QD71-142
Abstract

Background: Microleakage is a concern while restoring cervical lesions. Many products have attempted to minimize the interfacial gap between the tooth and restoration, the main pathway of microleakage. Aims and Objective: To compare and evaluate the microleakage in Class V cavity restored with nanohybrid flowable composite, Resin modified Glass Ionomer and Cention N. Method: Class V cavities were prepared on mandibular premolars on buccal surface with their occlusal margin placed in enamel and the gingival margin in dentin. The teeth were randomly assigned to three groups of 20 teeth each and restored with Flowable composite , Resin Modified GIC and Cention N. Samples were immersed in 0.5% Rhodamine dye, sectioned and microleakage measured using Confocal Laser Scanning Microscopy. Statistical analysis was done using Oneway ANOVA Bonferroni's test and Kruskal Waliis test. Results: The average depth of penetration of dye and scoring of depth were noted. On comparing dye penetration values between groups, RMGIC is compared with Flowable composite and Cention N, statistically significant result was obtained suggesting lesser dye penetration in RMGIC group (P < 0.001) where other comparison did not. Conclusion: RMGIC showed significantly less microleakage compared to the other two restorative materials used in the study and enamel margin of all restorations showed lesser microleakage than dentin margin.

Published
2021
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5. Caveolin-1-derived peptide attenuates cigarette smoke-induced airway and alveolar epithelial injury.

Author

Das, Durgesh Nandini, primary, Puthusseri, Bijesh, additional, Gopu, Venkadesaperumal, additional, Krishnan, Venugopal, additional, Bhagavath, Ashoka Kumar, additional, Bolla, Sudhir, additional, Saini, Yogesh, additional, Criner, Gerard J., additional, Marchetti, Nathaniel, additional, Tang, Hua, additional, Konduru, Nagarjun V., additional, Fan, Liang, additional, and Shetty, Sreerama, additional

Published
2023
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6. Green Synthesis and Characterization of Zinc Oxide Nanoparticles Using Eucalyptus globules and Their Fungicidal Ability Against Pathogenic Fungi of Apple Orchards

Author

Hilal Ahmad, Krishnan Venugopal, Kalyanaraman Rajagopal, Savitha De Britto, Boregowda Nandini, Hosur Gnanaprakash Pushpalatha, Narasimhamurthy Konappa, Arakere C. Udayashankar, Nagaraja Geetha, and Sudisha Jogaiah

Subjects
eucalyptus globules, zinc nanoparticles, apple, antifungal activity, ftir, sem, tem, fruit crops, Microbiology, QR1-502
Abstract

Eucalyptus globules belonging to the Myrtaceae family was explored for the synthesis of zinc oxide nanoparticles and for biological applications. The aqueous extract of the synthesized zinc nanoparticles (ZnNPs) was characterized using UV-visible spectrophotometer, FTIR, SEM and TEM. The aqueous broth was observed to be an efficient reducing agent, leading to the rapid formation of ZnNPs of varied shapes with sizes ranging between 52−70 nm. In addition, antifungal activity of the biosynthesized ZnNPs was evaluated against major phytopathogens of apple orchards. At 100 ppm of ZnNPs, the fungal growth inhibition rate was found to be 76.7% for Alternaria mali, followed by 65.4 and 55.2% inhibition rate for Botryosphaeria dothidea and Diplodia seriata, respectively. The microscopic observations of the treated fungal plates revealed that ZnNPs damages the topography of the fungal hyphal layers leading to a reduced contraction of hyphae. This considerable fungicidal property of ZnNPs against phytopathogenic fungi can have a tremendous impact on exploitation of ZnNPs for fungal pest management and ensure protection in fruit crops.

Published
2020
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7. Infective Endocarditis in Patients on Chronic Hemodialysis

Author

Juan M. Pericàs, Jaume Llopis, Maria Jesús Jiménez-Exposito, Wissam M. Kourany, Benito Almirante, Giampiero Carosi, Emanuele Durante-Mangoni, Claudio Querido Fortes, Efthymia Giannitsioti, Stamatios Lerakis, Rodrigo Montagna-Mella, Juan Ambrosioni, Ru-San Tan, Carlos A. Mestres, Dannah Wray, Orathai Pachirat, Asuncion Moreno, Vivian H. Chu, Elisa de Lazzari, Vance G. Fowler, Jose M. Miró, Liliana Clara, Marisa Sanchez, José Casabé, Claudia Cortes, Francisco Nacinovich, Pablo Fernandez Oses, Ricardo Ronderos, Adriana Sucari, Jorge Thierer, Javier Altclas, Silvia Kogan, Denis Spelman, Eugene Athan, Owen Harris, Karina Kennedy, Ren Tan, David Gordon, Lito Papanicolas, Tony Korman, Despina Kotsanas, Robyn Dever, Phillip Jones, Pam Konecny, Richard Lawrence, David Rees, Suzanne Ryan, Michael P. Feneley, John Harkness, Jeffrey Post, Porl Reinbott, Rainer Gattringer, Franz Wiesbauer, Adriana Ribas Andrade, Ana Cláudia Passos de Brito, Armenio Costa Guimarães, Max Grinberg, Alfredo José Mansur, Rinaldo Focaccia Siciliano, Tania Mara Varejao Strabelli, Marcelo Luiz Campos Vieira, Regina Aparecida de Medeiros Tranchesi, Marcelo Goulart Paiva, Auristela de Oliveira Ramos, Clara Weksler, Giovanna Ferraiuoli, Wilma Golebiovski, Cristiane Lamas, James A. Karlowsky, Yoav Keynan, Andrew M. Morris, Ethan Rubinstein, Sandra Braun Jones, Patricia Garcia, M. Cereceda, Alberto Fica, Rodrigo Montagna Mella, Ricardo Fernandez, Liliana Franco, Javier Gonzalez, Astrid Natalia Jaramillo, Bruno Barsic, Suzana Bukovski, Vladimir Krajinovic, Ana Pangercic, Igor Rudez, Josip Vincelj, Tomas Freiberger, Jiri Pol, Barbora Zaloudikova, Zainab Ashour, Amani El Kholy, Marwa Mishaal, Dina Osama, Hussien Rizk, Neijla Aissa, Corentine Alauzet, Francois Alla, CHU Catherine Campagnac, Thanh Doco-Lecompte, Christine Selton-Suty, Jean-Paul Casalta, Pierre-Edouard Fournier, Gilbert Habib, Didier Raoult, Franck Thuny, Francois Delahaye, Armelle Delahaye, Francois Vandenesch, Erwan Donal, Pierre Yves Donnio, Erwan Flecher, Christian Michelet, Matthieu Revest, Pierre Tattevin, Florent Chevalier, Antoine Jeu, Jean Paul Rémadi, Dan Rusinaru, Christophe Tribouilloy, Yvette Bernard, Catherine Chirouze, Bruno Hoen, Joel Leroy, Patrick Plesiat, Christoph Naber, Carl Neuerburg, Bahram Mazaheri, Carl Neuerburg Sophia Athanasia, Ioannis Deliolanis, Helen Giamarellou, Tsaganos Thomas, Elena Mylona, Olga Paniara, Konstantinos Papanicolaou, John Pyros, Athanasios Skoutelis, Konstantinos Papanikolaou, Gautam Sharma, Johnson Francis, Lathi Nair, Vinod Thomas, Krishnan Venugopal, Margaret M. Hannan, John P. Hurley, Maor Wanounou, Dan Gilon, Sarah Israel, Maya Korem, Jacob Strahilevitz, Domenico Iossa, Serena Orlando, Maria Paola Ursi, Pia Clara Pafundi, Fabiana D’Amico, Mariano Bernardo, Susanna Cuccurullo, Giovanni Dialetto, Franco Enrico Covino, Sabrina Manduca, Alessandro Della Corte, Marisa De Feo, Marie Françoise Tripodi, Enrico Cecchi, Francesco De Rosa, Davide Forno, Massimo Imazio, Rita Trinchero, Paolo Grossi, Mariangela Lattanzio, Antonio Toniolo, Antonio Goglio, Annibale Raglio, Veronica Ravasio, Marco Rizzi, Fredy Suter, Silvia Magri, Liana Signorini, Zeina Kanafani, Souha S. Kanj, Ahmad Sharif-Yakan, Imran Abidin, Syahidah Syed Tamin, Eduardo Rivera Martínez, Gabriel Israel Soto Nieto, Jan T.M. van der Meer, Stephen Chambers, David Holland, Arthur Morris, Nigel Raymond, Kerry Read, David R. Murdoch, Stefan Dragulescu, Adina Ionac, Cristian Mornos, O.M. Butkevich, Natalia Chipigina, Ozerecky Kirill, Kulichenko Vadim, Tatiana Vinogradova, Jameela Edathodu, Magid Halim, Yee-Yun Liew, Tatjana Lejko-Zupanc, Mateja Logar, Manica Mueller-Premru, Patrick Commerford, Anita Commerford, Eduan Deetlefs, Cass Hansa, Mpiko Ntsekhe, Manel Almela, Manuel Azqueta, Merce Brunet, Pedro Castro, Elisa De Lazzari, Carlos Falces, David Fuster, Guillermina Fita, Cristina Garcia- de- la- Maria, Javier Garcia-Gonzalez, Jose M. Gatell, Francesc Marco, José M. Miró, José Ortiz, Salvador Ninot, J. Carlos Paré, Juan M. Pericas, Eduard Quintana, Jose Ramirez, Irene Rovira, Elena Sandoval, Marta Sitges, Adrian Tellez, José M. Tolosana, Barbara Vidal, Jordi Vila, Ignasi Anguera, Bernat Font, Joan Raimon Guma, Javier Bermejo, Emilio Bouza, Miguel Angel Garcia Fernández, Victor Gonzalez-Ramallo, Mercedes Marín, Patricia Muñoz, Miguel Pedromingo, Jorge Roda, Marta Rodríguez-Créixems, Jorge Solis, Nuria Fernandez-Hidalgo, Pilar Tornos, Arístides de Alarcón, Ricardo Parra, Eric Alestig, Magnus Johansson, Lars Olaison, Ulrika Snygg-Martin, Pimchitra Pachirat, Burabha Pussadhamma, Vichai Senthong, Anna Casey, Tom Elliott, Peter Lambert, Richard Watkin, Christina Eyton, John L. Klein, Suzanne Bradley, Carol Kauffman, Roger Bedimo, G. Ralph Corey, Anna Lisa Crowley, Pamela Douglas, Laura Drew, Thomas Holland, Tahaniyat Lalani, Daniel Mudrick, Zaniab Samad, Daniel Sexton, Martin Stryjewski, Andrew Wang, Christopher W. Woods, Robert Cantey, Lisa Steed, Stuart A. Dickerman, Hector Bonilla, Joseph DiPersio, Sara-Jane Salstrom, John Baddley, Mukesh Patel, Gail Peterson, Amy Stancoven, Donald Levine, Jonathan Riddle, Michael Rybak, Christopher H. Cabell, Pericas, J. M., Llopis, J., Jimenez-Exposito, M. J., Kourany, W. M., Almirante, B., Carosi, G., Durante-Mangoni, E., Fortes, C. Q., Giannitsioti, E., Lerakis, S., Montagna-Mella, R., Ambrosioni, J., Tan, R. -S., Mestres, C. A., Wray, D., Pachirat, O., Moreno, A., Chu, V. H., de Lazzari, E., Fowler, V. G., Miro, J. M., Clara, L., Sanchez, M., Casabe, J., Cortes, C., Nacinovich, F., Oses, P. F., Ronderos, R., Sucari, A., Thierer, J., Altclas, J., Kogan, S., Spelman, D., Athan, E., Harris, O., Kennedy, K., Tan, R., Gordon, D., Papanicolas, L., Korman, T., Kotsanas, D., Dever, R., Jones, P., Konecny, P., Lawrence, R., Rees, D., Ryan, S., Feneley, M. P., Harkness, J., Post, J., Reinbott, P., Gattringer, R., Wiesbauer, F., Andrade, A. R., Passos de Brito, A. C., Guimaraes, A. C., Grinberg, M., Mansur, A. J., Siciliano, R. F., Varejao Strabelli, T. M., Campos Vieira, M. L., de Medeiros Tranchesi, R. A., Paiva, M. G., de Oliveira Ramos, A., Weksler, C., Ferraiuoli, G., Golebiovski, W., Lamas, C., Karlowsky, J. A., Keynan, Y., Morris, A. M., Rubinstein, E., Jones, S. B., Garcia, P., Cereceda, M., Fica, A., Mella, R. M., Fernandez, R., Franco, L., Gonzalez, J., Jaramillo, A. N., Barsic, B., Bukovski, S., Krajinovic, V., Pangercic, A., Rudez, I., Vincelj, J., Freiberger, T., Pol, J., Zaloudikova, B., Ashour, Z., El Kholy, A., Mishaal, M., Osama, D., Rizk, H., Aissa, N., Alauzet, C., Alla, F., Campagnac, C. C., Doco-Lecompte, T., Selton-Suty, C., Casalta, J. -P., Fournier, P. -E., Habib, G., Raoult, D., Thuny, F., Delahaye, F., Delahaye, A., Vandenesch, F., Donal, E., Donnio, P. Y., Flecher, E., Michelet, C., Revest, M., Tattevin, P., Chevalier, F., Jeu, A., Remadi, J. P., Rusinaru, D., Tribouilloy, C., Bernard, Y., Chirouze, C., Hoen, B., Leroy, J., Plesiat, P., Naber, C., Neuerburg, C., Mazaheri, B., Sophia Athanasia, C. N., Deliolanis, I., Giamarellou, H., Thomas, T., Mylona, E., Paniara, O., Papanicolaou, K., Pyros, J., Skoutelis, A., Papanikolaou, K., Sharma, G., Francis, J., Nair, L., Thomas, V., Venugopal, K., Hannan, M. M., Hurley, J. P., Wanounou, M., Gilon, D., Israel, S., Korem, M., Strahilevitz, J., Iossa, D., Orlando, S., Ursi, M. P., Pafundi, P. C., D'Amico, F., Bernardo, M., Cuccurullo, S., Dialetto, G., Covino, F. E., Manduca, S., Della Corte, A., De Feo, M., Tripodi, M. F., Cecchi, E., De Rosa, F., Forno, D., Imazio, M., Trinchero, R., Grossi, P., Lattanzio, M., Toniolo, A., Goglio, A., Raglio, A., Ravasio, V., Rizzi, M., Suter, F., Magri, S., Signorini, L., Kanafani, Z., Kanj, S. S., Sharif-Yakan, A., Abidin, I., Tamin, S. S., Martinez, E. R., Soto Nieto, G. I., van der Meer, J. T. M., Chambers, S., Holland, D., Morris, A., Raymond, N., Read, K., Murdoch, D. R., Dragulescu, S., Ionac, A., Mornos, C., Butkevich, O. M., Chipigina, N., Kirill, O., Vadim, K., Vinogradova, T., Edathodu, J., Halim, M., Liew, Y. -Y., Lejko-Zupanc, T., Logar, M., Mueller-Premru, M., Commerford, P., Commerford, A., Deetlefs, E., Hansa, C., Ntsekhe, M., Almela, M., Azqueta, M., Brunet, M., Castro, P., Falces, C., Fuster, D., Fita, G., Garcia- de- la- Maria, C., Garcia-Gonzalez, J., Gatell, J. M., Marco, F., Ortiz, J., Ninot, S., Pare, J. C., Quintana, E., Ramirez, J., Rovira, I., Sandoval, E., Sitges, M., Tellez, A., Tolosana, J. M., Vidal, B., Vila, J., Anguera, I., Font, B., Guma, J. R., Bermejo, J., Bouza, E., Garcia Fernandez, M. A., Gonzalez-Ramallo, V., Marin, M., Munoz, P., Pedromingo, M., Roda, J., Rodriguez-Creixems, M., Solis, J., Fernandez-Hidalgo, N., Tornos, P., de Alarcon, A., Parra, R., Alestig, E., Johansson, M., Olaison, L., Snygg-Martin, U., Pachirat, P., Pussadhamma, B., Senthong, V., Casey, A., Elliott, T., Lambert, P., Watkin, R., Eyton, C., Klein, J. L., Bradley, S., Kauffman, C., Bedimo, R., Corey, G. R., Crowley, A. L., Douglas, P., Drew, L., Holland, T., Lalani, T., Mudrick, D., Samad, Z., Sexton, D., Stryjewski, M., Wang, A., Woods, C. W., Cantey, R., Steed, L., Dickerman, S. A., Bonilla, H., Dipersio, J., Salstrom, S. -J., Baddley, J., Patel, M., Peterson, G., Stancoven, A., Levine, D., Riddle, J., Rybak, M., Cabell, C. H., Bristol-Myers Squibb Company, Vall d'Hebron University Hospital [Barcelona], Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Centre recherche en CardioVasculaire et Nutrition = Center for CardioVascular and Nutrition research (C2VN), Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), CHU Pontchaillou [Rennes], ARN régulateurs bactériens et médecine (BRM), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), and Laboratoire Chrono-environnement (UMR 6249) (LCE)

Subjects
Male, relapses, medicine.medical_treatment, infective endocarditi, 030204 cardiovascular system & hematology, Kidney Failure, Cohort Studies, Catheters, Indwelling, 0302 clinical medicine, Surgical, Epidemiology, cardiac surgery, enterococci, hemodialysis, infective endocarditis, Staphylococcus aureus, Aged, Anti-Bacterial Agents, Arteriovenous Shunt, Surgical, Cardiac Surgical Procedures, Endocarditis, Female, Humans, Kidney Failure, Chronic, Methicillin-Resistant Staphylococcus aureus, Middle Aged, Renal Dialysis, Staphylococcal Infections, 030212 general & internal medicine, Chronic, Prospective cohort study, health care economics and organizations, relapse, Arteriovenous Shunt, 3. Good health, Cardiac surgery, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, Indwelling, Infective endocarditis, Hemodialysis, Cardiology and Cardiovascular Medicine, medicine.medical_specialty, Catheters, education, 03 medical and health sciences, Internal medicine, medicine, business.industry, medicine.disease, hemodialysi, Etiology, Complication, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract

International audience; Background - Infective endocarditis (IE) is a common and serious complication in patients receiving chronic hemodialysis (HD). Objectives - This study sought to investigate whether there are significant differences in complications, cardiac surgery, relapses, and mortality between IE cases in HD and non-HD patients. Methods - Prospective cohort study (International Collaboration on Endocarditis databases, encompassing 7,715 IE episodes from 2000 to 2006 and from 2008 to 2012). Descriptive analysis of baseline characteristics, epidemiological and etiological features, complications and outcomes, and their comparison between HD and non-HD patients was performed. Risk factors for major embolic events, cardiac surgery, relapses, and in-hospital and 6-month mortality were investigated in HD-patients using multivariable logistic regression. Results - A total of 6,691 patients were included and 553 (8.3%) received HD. North America had a higher HD-IE proportion than the other regions. The predominant microorganism was Staphylococcus aureus (47.8%), followed by enterococci (15.4%). Both in-hospital and 6-month mortality were significantly higher in HD versus non-HD-IE patients (30.4% vs. 17% and 39.8% vs. 20.7%, respectively; p

Published
2021

8. COVID-19 antibody tests: An overview

Author

Krishnan Venugopal, V P Prabath Singh, Kaushik Haridas, R Kavitha, Arjun B Ravi, and Roshni Chandran

Subjects
Bioengineering, Review Article, Disease, severe acute respiratory syndrome coronavirus-2, medicine.disease_cause, General Biochemistry, Genetics and Molecular Biology, Virus, Herd immunity, Serology, coronavirus disease 2019, Immune system, Pharmacy and materia medica, Pandemic, Medicine, General Pharmacology, Toxicology and Pharmaceutics, Coronavirus, QD71-142, biology, business.industry, serology tests, Virology, RS1-441, biology.protein, Antibody, business, antibody tests, Analytical chemistry
Abstract

Novel coronavirus (nCoV) first emerged in Hubei province of China in December 2019. The virus initially known as 2019-nCoV was renamed to severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) by the International Committee on Taxonomy of Viruses. The associated disease is known as coronavirus disease 2019 (COVID-19). As the COVID-19 pandemic has unfolded, interest has grown in antibody testing as a way to measure how far the infection has spread and to identify individuals who may be immune. Molecular diagnostic tests like polymerase chain reaction are developed rapidly, however they are not able to fulfill all the requirements of an epidemic reaction. Hence, to complement molecular diagnostic tests, serology tests emerged as a vital aspect of the overall response by confirming the presence of antibodies during the early stage of the infection. Antibody tests help in assessing herd immunity, data about the ongoing phase of infection, identifying potential donors for convalescent plasma therapy, etc. This review currently focuses on giving an overview about the antibody tests in SARS-CoV-2 infections.

Published
2021

9. Comparative Evaluation of Microcrack Formation in Different Kinematics Using Rotary and Reciprocating File Systems: An In Vitro Study

Author

Krishnan Venugopal, Madhu Hariharan, Anju Varughese, Prabath Singh, Arjun B Ravi, and Kaushik Haridas

Subjects
Orthodontics, Reciprocating motion, medicine.anatomical_structure, Materials science, Root canal, Stereo microscope, medicine, Dentin, In vitro study, A diamond, Kinematics, General Dentistry, Comparative evaluation
Abstract

Aim and objective To compare root microcrack formation after root canal preparation using ProTaper Next in rotation or forward reciprocation and Waveone gold in reverse reciprocating motion. Materials and methods Buccal roots of 60 maxillary premolars with mature apices were selected, for different instrumentation techniques and divided into three groups. Coronal access was achieved and the canals were confirmed for apical patency. The canals were then instrumented using the following instrumentation techniques: ProTaper Next in rotation or forward reciprocation or Waveone gold in reverse reciprocation. The tooth was then subjected to sectioning using a diamond saw under water cooling and then was visualized under the stereomicroscope for dentinal microcrack. Results The results showed that the maximum dentinal microcrack formed at apical 3 and 6 mm was in Waveone gold in reverse reciprocation followed by ProTaper Next in forward reciprocation and rotation. However, the p value was found to be not significant at 3 and 6 mm (p value—0.082 and 0.23). Conclusion Nickle titanium rotary instruments tend to induce varied degrees of root dentinal damage during canal instrumentation. ProTaper Next files in rotation as well as forward reciprocation presented with minimal microcrack defects when compared with Waveone gold. Clinical significance Root canal preparation, when performed by manual or engine-driven techniques, has shown to produce structural defects in the root dentin. One of the causes of failures in root canal treatment is because of fracture in the dentin that occurs due to these procedures. Though all the motion kinematics caused microcracks in this study, it was seen that rotational motion produced the least structural damage to the dentin. How to cite this article Haridas K, Hariharan M, Singh P, et al. Comparative Evaluation of Microcrack Formation in Different Kinematics Using Rotary and Reciprocating File Systems: An In Vitro Study. J Contemp Dent Pract 2020;21(12):1389–1392.

Published
2020

10. Comparative evaluation of shear bond strength of calcium silicate-based liners to resin-modified glass ionomer cement in resin composite restorations - a systematic review and meta-analysis

Author

Akhila Manoj, R. Kavitha, Vineetha Karuveettil, V. P. Prabath Singh, Kaushik Haridas, and Krishnan Venugopal

Subjects
General Dentistry
Abstract

Purpose The aim of this systematic review was to evaluate the difference in shear bond strength between calcium silicate-based liners to resin-modified glass ionomer cement (RMGIC) in resin composite restorations.Materials and methods The protocol was registered in PROSPERO following which primary research was carried out on Medline, Scopus and Cochrane library. To assess the risk of bias, a customised tool was used. Among the 194 records retrieved from the databases, only ten articles qualified for qualitative and quantitative synthesis after meeting all the requirements of the eligibility criteria. Covidence software was used to record the decisions. Studies published until 31 March 2021 were taken up for the review. The articles showed a low-to-moderate risk of bias. I2 test was used to check the percentage variation due to heterogeneity.Results RMGIC showed a higher shear bond strength value compared to the three calcium silicate liners MTA, Biodentine and TheraCal LC. However, TheraCal LC and MTA showed better bond strength than Biodentine. Cohesive failure was seen predominantly in liners followed by adhesive failure. RMGIC shows mixed mode of failure in some studies.Conclusions RMGIC is preferred over calcium silicate-based materials as the liner to be used under resin composite restorations. Among calcium silicate-based materials, TheraCal LC showed a better bond strength value. The mode of failure was predominantly cohesive in all the liner groups in majority.

Published
2021

11. Comparative Evaluation of Microcrack Formation in Different Kinematics Using Rotary and Reciprocating File Systems: An

Author

Kaushik, Haridas, Madhu, Hariharan, Prabath, Singh, Anju, Varughese, Arjun B, Ravi, and Krishnan, Venugopal

Subjects
Dentin, Dental Pulp Cavity, Tooth Root, Root Canal Preparation, Biomechanical Phenomena, Root Canal Therapy
Abstract

To compare r oot microcrack formation after r oot canal preparation using ProTaper Next in r otation or forward r eciprocation and Waveone gold in r everse r eciprocating motion.Buccal r oots of 60 maxillary premolars with mature apices were selected, for different instrumentation techniques and divided into three groups. Coronal access was achieved and the canals were confirmed for apical patency. The canals were then instrumented using the following instrumentation techniques: ProTaper Next in r otation or forward r eciprocation or Waveone gold in r everse reciprocation. The tooth was then subjected to sectioning using a diamond saw under water cooling and then was visualized under the stereomicroscope for dentinal microcrack.The results showed that the maximum dentinal microcrack formed at apical 3 and 6 mm was in Waveone gold in reverse reciprocation followed by ProTaper Next in forward reciprocation and rotation. However, theNickle titanium rotary instruments tend to induce varied degrees of root dentinal damage during canal instrumentation. ProTaper Next files in rotation as well as forward reciprocation presented with minimal microcrack defects when compared with Waveone gold.Root canal preparation, when performed by manual or engine-driven techniques, has shown to produce structural defects in the root dentin. One of the causes of failures in root canal treatment is because of fracture in the dentin that occurs due to these procedures. Though all the motion kinematics caused microcracks in this study, it was seen that rotational motion produced the least structural damage to the dentin.

Published
2021

12. Status update of MACE Gamma-ray telescope

Author

Yadav, Kuldeep, primary, Bhatt, Nilay, additional, Bhattacharyya, Subir, additional, Borwankar, Chinmay, additional, Chanchalani, Kishor, additional, Chandra, Pradeep, additional, Chitnis, Varsha, additional, Chouhan, Nilesh, additional, Das, Manas Pratim, additional, Dhar, Vir Krishen, additional, Ghosal, Bitan, additional, Godambe, Sagar, additional, Godiyal, Sandeep, additional, Gour, Kaushal Kant, additional, Jayaraman, Hariharan, additional, Khurana, Mani, additional, Kothari, Mahendra, additional, Kotwal, Sameer, additional, Koul, Maharaj Krishen, additional, Kumar, Nandan, additional, Kumar, Naveen, additional, Kushwaha, Chandra Prakash, additional, Mankuzhiyil, Nijil, additional, Marandi, Prashant, additional, Nand, Keshav, additional, Norlha, Stanzin, additional, Sarkar, Debangana, additional, Sharma, Mridul, additional, Singh, Krishna Kumar, additional, Thubstan, Rinchen, additional, Tolamatti,, Anil, additional, and Krishnan, Venugopal, additional

Published
2021
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13. An Efficient Task Scheduling Using GWO-PSO Algorithm in a Cloud Computing Environment

Author

Sivakumar Soubraylu, Avinashi Malleswaran Senthil Kumar, Kalimuthu Marimuthu, Parthiban Krishnamoorthy, and Jeya Krishnan Venugopal

Subjects
Polynomial, Mathematical optimization, Job shop scheduling, business.industry, Computer science, Quality of service, Particle swarm optimization, Response time, Cloud computing, business, Scheduling (computing), Task (project management)
Abstract

Nowadays, cloud computing becomes a major technology that provides services to users by integrating Internet technology. Scheduling of user tasks plays a vital role in a cloud environment. An efficient task scheduling method is required to manage the resources for executing user tasks in order to attain better result in QoS parameters. Task scheduling is a kind of non-deterministic polynomial (NP) hard problem, which can be solved using optimization algorithms. This paper presents a novel hybrid method by combining grey wolf optimization (GWO) and particle swarm optimization algorithm (PSO). The proposed method optimizes the result in order to maintain the makespan as a minimum. PSO improves the optimization performance of grey wolf optimization in the proposed method. The proposed algorithm performance is evaluated and analysed with GA and GWO algorithms. The proposed GWO-PSO algorithm results are better than the GWO and GA algorithms in terms of response time and makespan.

Published
2021

16. Validated Risk Score for Predicting 6-Month Mortality in Infective Endocarditis

Author

Lawrence P. Park, Vivian H. Chu, Gail Peterson, Athanasios Skoutelis, Tatjana Lejko‐Zupa, Emilio Bouza, Pierre Tattevin, Gilbert Habib, Ren Tan, Javier Gonzalez, Javier Altclas, Jameela Edathodu, Claudio Querido Fortes, Rinaldo Focaccia Siciliano, Orathai Pachirat, Souha Kanj, Andrew Wang, Liliana Clara, Marisa Sanchez, José Casabé, Claudia Cortes, Francisco Nacinovich, Pablo Fernandez Oses, Ricardo Ronderos, Adriana Sucari, Jorge Thierer, Silvia Kogan, Denis Spelman, Eugene Athan, Owen Harris, Karina Kennedy, David Gordon, Lito Papanicolas, Tony Korman, Despina Kotsanas, Robyn Dever, Phillip Jones, Pam Konecny, Richard Lawrence, David Rees, Suzanne Ryan, Michael P. Feneley, John Harkness, Jeffrey Post, Porl Reinbott, Rainer Gattringer, Franz Wiesbauer, Adriana Ribas Andrade, Ana Cláudia Passos de Brito, Armenio Costa Guimarães, Max Grinberg, Alfredo José Mansur, Tania Mara Varejao Strabelli, Marcelo Luiz Campos Vieira, Regina Aparecida de Medeiros Tranchesi, Marcelo Goulart Paiva, Auristela de Oliveira Ramos, Clara Weksler, Giovanna Ferraiuoli, Wilma Golebiovski, Cristiane Lamas, James A. Karlowsky, Yoav Keynan, Andrew M. Morris, Ethan Rubinstein, Sandra Braun Jones, Patricia Garcia, Alberto Fica, Rodrigo Montagna Mella, Ricardo Fernandez, Liliana Franco, Astrid Natalia Jaramillo, Bruno Barsic, Suzana Bukovski, Vladimir Krajinovic, Ana Pangercic, Igor Rudez, Josip Vincelj, Tomas Freiberger, Jiri Pol, Barbora Zaloudikova, Zainab Ashour, Amani El Kholy, Marwa Mishaal, Dina Osama, Hussien Rizk, Neijla Aissa, Corentine Alauzet, Francois Alla, Catherine Campagnac, Thanh Doco‐Lecompte, Christine Selton‐Suty, Jean‐Paul Casalta, Pierre‐Edouard Fournier, Didier Raoult, Franck Thuny, Francois Delahaye, Armelle Delahaye, Francois Vandenesch, Erwan Donal, Pierre Yves Donnio, Erwan Flecher, Christian Michelet, Matthieu Revest, Florent Chevalier, Antoine Jeu, Jean Paul Rémadi, Dan Rusinaru, Christophe Tribouilloy, Yvette Bernard, Catherine Chirouze, Bruno Hoen, Joel Leroy, Patrick Plesiat, Christoph Naber, Carl Neuerburg, Bahram Mazaheri, Sophia Athanasia, Ioannis Deliolanis, Helen Giamarellou, Tsaganos Thomas, Efthymia Giannitsioti, Elena Mylona, Olga Paniara, Konstantinos Papanicolaou, John Pyros, Konstantinos Papanikolaou, Gautam Sharma, Johnson Francis, Lathi Nair, Vinod Thomas, Krishnan Venugopal, Margaret M. Hannan, John P. Hurley, Amos Cahan, Dan Gilon, Sarah Israel, Maya Korem, Jacob Strahilevitz, Emanuele Durante‐Mangoni, Irene Mattucci, Daniela Pinto, Federica Agrusta, Alessandra Senese, Enrico Ragone, Riccardo Utili, Enrico Cecchi, Francesco De Rosa, Davide Forno, Massimo Imazio, Rita Trinchero, Paolo Grossi, Mariangela Lattanzio, Antonio Toniolo, Antonio Goglio, Annibale Raglio, Veronica Ravasio, Marco Rizzi, Fredy Suter, Giampiero Carosi, Silvia Magri, Liana Signorini, Zeina Kanafani, Souha S. Kanj, Ahmad Sharif‐Yakan, Imran Abidin, Syahidah Syed Tamin, Eduardo Rivera Martínez, Gabriel Israel Soto Nieto, Jan T.M. van der Meer, Stephen Chambers, David Holland, Arthur Morris, Nigel Raymond, Kerry Read, David R. Murdoch, Stefan Dragulescu, Adina Ionac, Cristian Mornos, O.M. Butkevich, Natalia Chipigina, Ozerecky Kirill, Kulichenko Vadim, Tatiana Vinogradova, Magid Halim, Yee‐Yun Liew, Ru‐San Tan, Mateja Logar, Manica Mueller‐Premru, Patrick Commerford, Anita Commerford, Eduan Deetlefs, Cass Hansa, Mpiko Ntsekhe, Manuel Almela, Yolanda Armero, Manuel Azqueta, Ximena Castañeda, Carlos Cervera, Carlos Falces, Cristina Garcia‐de‐la‐Maria, Guillermina Fita, Jose M. Gatell, Magda Heras, Jaime Llopis, Francesc Marco, Carlos A. Mestres, José M. Miró, Asuncion Moreno, Salvador Ninot, Carlos Paré, Juan M. Pericas, Jose Ramirez, Irene Rovira, Marta Sitges, Ignasi Anguera, Bernat Font, Joan Raimon Guma, Javier Bermejo, Miguel Angel Garcia Fernández, Victor Gonzalez‐Ramallo, Mercedes Marín, Patricia Muñoz, Miguel Pedromingo, Jorge Roda, Marta Rodríguez‐Créixems, Jorge Solis, Benito Almirante, Nuria Fernandez‐Hidalgo, Pilar Tornos, Arístides de Alarcón, Ricardo Parra, Eric Alestig, Magnus Johansson, Lars Olaison, Ulrika Snygg‐Martin, Pimchitra Pachirat, Burabha Pussadhamma, Vichai Senthong, Anna Casey, Tom Elliott, Peter Lambert, Richard Watkin, Christina Eyton, John L. Klein, Suzanne Bradley, Carol Kauffman, Roger Bedimo, G. Ralph Corey, Anna Lisa Crowley, Pamela Douglas, Laura Drew, Vance G. Fowler, Thomas Holland, Tahaniyat Lalani, Daniel Mudrick, Zaniab Samad, Daniel Sexton, Martin Stryjewski, Christopher W. Woods, Stamatios Lerakis, Robert Cantey, Lisa Steed, Dannah Wray, Stuart A. Dickerman, Hector Bonilla, Joseph DiPersio, Sara‐Jane Salstrom, John Baddley, Mukesh Patel, Amy Stancoven, Donald Levine, Jonathan Riddle, Michael Rybak, Christopher H. Cabell, Khaula Baloch, Christy C. Dixon, Tina Harding, Marian Jones‐Richmond, Bob Sanderford, Judy Stafford, Kevin Anstrom, Arnold S. Bayer, A. W. Karchmer, Daniel J. Sexton, Vivian Chu, David T. Durack, Susannah Eykyn, Phillipe Moreillon, Duke University Medical Center, Centre d'Investigation Clinique [Rennes] (CIC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), Service des maladies infectieuses et réanimation médicale [Rennes] = Infectious Disease and Intensive Care [Rennes], CHU Pontchaillou [Rennes], Fonction, structure et inactivation d'ARN bactériens, Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes (URMITE), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR48, INSB-INSB-Centre National de la Recherche Scientifique (CNRS), Service de cardiologie, Université de la Méditerranée - Aix-Marseille 2-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE), Université de Rennes (UR)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Institut des sciences biologiques (INSB-CNRS)-Institut des sciences biologiques (INSB-CNRS)-Centre National de la Recherche Scientifique (CNRS), Jonchère, Laurent, Universitat de Barcelona, Mazaheri, Bahram (Beitragende*r), Naber, Christoph (Beitragende*r), and Neuerburg, Carl (Beitragende*r)

Subjects
Male, Infeccions quirúrgiques, Surgical wound infection, Medizin, Kaplan-Meier Estimate, 030204 cardiovascular system & hematology, 0302 clinical medicine, Risk Factors, Clinical Studies, Registries, 030212 general & internal medicine, Original Research, Framingham Risk Score, Endocarditis, Hazard ratio, Middle Aged, Prognosis, infection, mortality, prognosis, surgery, valves, [SDV.MHEP.CSC] Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, 3. Good health, Infective endocarditis, Cohort, Female, Mortality/Survival, Cardiology and Cardiovascular Medicine, Risk assessment, Infection, Cohort study, Adult, medicine.medical_specialty, Lower risk, Risk Assessment, Sensitivity and Specificity, 03 medical and health sciences, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, Internal medicine, Mortalitat, medicine, Humans, Infectious Endocarditis, Mortality, Propensity Score, Aged, Models, Statistical, Cirurgia, business.industry, Proportional hazards model, Reproducibility of Results, medicine.disease, Surgery, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, Valvular Heart Disease, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, business
Abstract

Background Host factors and complications have been associated with higher mortality in infective endocarditis ( IE ). We sought to develop and validate a model of clinical characteristics to predict 6‐month mortality in IE . Methods and Results Using a large multinational prospective registry of definite IE (International Collaboration on Endocarditis [ ICE ]–Prospective Cohort Study [ PCS ], 2000–2006, n=4049), a model to predict 6‐month survival was developed by Cox proportional hazards modeling with inverse probability weighting for surgery treatment and was internally validated by the bootstrapping method. This model was externally validated in an independent prospective registry ( ICE ‐ PLUS , 2008–2012, n=1197). The 6‐month mortality was 971 of 4049 (24.0%) in the ICE ‐ PCS cohort and 342 of 1197 (28.6%) in the ICE ‐ PLUS cohort. Surgery during the index hospitalization was performed in 48.1% and 54.0% of the cohorts, respectively. In the derivation model, variables related to host factors (age, dialysis), IE characteristics (prosthetic or nosocomial IE , causative organism, left‐sided valve vegetation), and IE complications (severe heart failure, stroke, paravalvular complication, and persistent bacteremia) were independently associated with 6‐month mortality, and surgery was associated with a lower risk of mortality (Harrell's C statistic 0.715). In the validation model, these variables had similar hazard ratios (Harrell's C statistic 0.682), with a similar, independent benefit of surgery (hazard ratio 0.74, 95% CI 0.62–0.89). A simplified risk model was developed by weight adjustment of these variables. Conclusions Six‐month mortality after IE is ≈25% and is predicted by host factors, IE characteristics, and IE complications. Surgery during the index hospitalization is associated with lower mortality but is performed less frequently in the highest risk patients. A simplified risk model may be used to identify specific risk subgroups in IE .

Published
2016

17. Impact of early valve surgery on outcome of Staphylococcus aureus prosthetic valve infective endocarditis: analysis in the International Collaboration of Endocarditis-Prospective Cohort Study

Author

Richard Watkin, Pierre-Edouard Fournier, David R. Murdoch, Yoav Keynan, Florent Chevalier, Tania Mara Varejão Strabelli, Imran Zainal Abidin, Denis Spelman, Roger Bedimo, Jeffrey J. Post, Francesc Marco, Alan C Street, Claudio Querido Fortes, Francisco Nacinovich, Antonio Goglio, Stephen T. Chambers, Fredy Suter, Claire Sorel, Alessandro Tebini, Phillip Jones, Robyn Dever, Emilio Bouza, G. Ralph Corey, Karina Kennedy, Alfredo José Mansur, Nigel Raymond, Guillermina Fita, Martin E. Stryjewski, Joan R. Guma, Asunción Moreno, John W. Baddley, Johnson Francis, Magnus Johansson, José H. Casabé, Margaret M. Hannan, Krishnan Venugopal, Thanh Doco-Lecompte, Jacob Strahilevitz, Annibale Raglio, Carl Neuerburg, Vichai Senthong, Cass Hansa, Ana Pangerčić, Adina Ionac, Vladimir Krajinović, Christine Selton-Suty, Marwa Mishaal, Mateja Logar, Erwan Donal, Elena Mylona, Clara Weksler, Joseph Di Persio, Antoine Jeu, Pilar Tornos, Konstantinos Papanicolaou, François Vandenesch, Tom S.J. Elliott, Jan van der Meer, Patricia Muñoz, Regina Aparecida De Medeiros Tranchesi, Lathi Nair, Dannah Wray, Arnold S. Bayer, Pamela Konecny, David L. Gordon, Gilbert Habib, Armênio Costa Guimarães, Alberto Fica, Mercedes Marín, Francesco Giuseppe De Rosa, Marian Jones-Richmond, Marcelo Luiz Campos Vieira, Max Grinberg, Luis Afonso, Khaula Baloch, Pimchitra Pachirat, Anna Lisa Crowley, Marie Line Erpelding, Miguel Pedromingo, Daniel W. Mudrick, John Harkness, Barbora Zaloudikova, Christophe Tribouilloy, Cristina Garcia-de-la-Maria, Kerry Read, Athanasios Skoutelis, Marco Rizzi, Michael J. Rybak, Ioannis Deliolanis, Stuart Dickerman, Carol A. Kauffman, John L Klein, Suzanne Ryan, Christopher W. Woods, Gautam Sharma, Silvia Magri, Susannah J. Eykyn, Veronica Ravasio, Auristela De Oliveira Ramos, J. Leroy, Bruno Baršić, Burabha Pussadhamma, Jameela Edathodu, Franck Thuny, Eduan Deetlefs, Yvette Bernard, Rinaldo Focaccia Siciliano, Lito E. Papanicolas, Salvador Ninot, Nuria Fernández-Hidalgo, Zaniab Samad, Arístides de Alarcón, Neijla Aissa, Claudia Cortés, Thomas L. Holland, Tina Harding, Tania A. Baban, Irene Rovira, Ethan Rubinstein, Jorge Solis, Maya Korem, Giampiero Carosi, Marie Francoise Tripodi, Andrew Wang, Orathai Pachirat, Davide Forno, Ana Cláudia Passos De Brito, Catherine Campagnac, Anna L. Casey, Ana del Río, Gail E. Peterson, Carlos Falces, Christopher H. Cabell, François Delahaye, Emanuele Durante-Mangoni, Mattucci Irene, Despina Kotsanas, Javier Bermejo, Pierre Tattevin, Richard Lawrence, John Pyros, José M. Gatell, Jérémie Violette, Igor Rudez, Peter A. Lambert, Jean Paul Casalta, Jiri Pol, Kulichenko Vadim, Pablo Fernandez Oses, Ximena Castañeda, José Ramírez, Rita Trinchero, Sarah Israel, Mariangela Lattanzio, Eugene Athan, Arthur J. Morris, Bahram Mazaheri, Leeanne Grigg, Mohamad Yasmine, Adriana Andrade, Owen Harris, Syahidah Syed Tamin, Adolf W. Karchmer, Joan Pericas, Manica Mueller-Premru, Ozerecky Kirill, Eduardo Rivera Martínez, Christina Eyton, Josip Vincelj, Marisa Santos, Marisa Sanchez, David T. Durack, Dan Gilon, Marcelo Goulart Paiva, G. Ferraiuoli, Susanna Cuccurullo, Chipigina Ns, Lars Olaison, Patrick Plésiat, Michael P. Feneley, Amy B. Stancoven, Efthymia Giannitsioti, Cristiane da Cruz Lamas, Silvia Kogan, Kevin J. Anstrom, Manuel Almela, Liliana Clara, Stamatios Lerakis, Massimo Imazio, Rainer Gattringer, Javier Altclas, Wilma F. Golebiovski, Cristian Mornos, Damon P. Eisen, Pierre-Yves Donnio, Bernat Font, Eric Alestig, Liana Signorini, Sandra Braun Jones, Pamela S. Douglas, Helen Giamarellou, Gabriel Israel Soto Nieto, Tatjana Lejko-Zupanc, Benito Almirante, Dan Rusinaru, Anita Commerford, Yolanda Armero, Donald P. Levine, Mukesh Patel, M. Azqueta, Mpiko Ntsekhe, Phillipe Moreillon, Matthieu Revest, Adriana Sucari, Ashour Zainab, Olga Paniara, Víctor González-Ramallo, Miguel Ángel García Fernández, Ricardo Parra, Christoph Naber, Hector Bonilla, John P. Hurley, Rodrigo Montagna Mella, James A. Karlowsky, Lisa L. Steed, Armelle Delahaye, Marta Rodríguez-Créixems, José M. Miró, Enrico Cecchi, Enrico Ragone, Catherine Chirouze, J. Roda, David Holland, Marta Sitges, Luh Nah Lum, Patricia García, Thomas Redick, Theresa Kulman, Paul A. Pappas, Carlos Paré, Riccardo Utili, Stefan Dragulescu, Robert Cantey, Paolo Grossi, Vivian H. Chu, Porl Reinbott, Bruno Hoen, Amani El Kholy, Judy Stafford, Tomáš Freiberger, Hussien Rizk, Corentine Alauzet, Ricardo Ronderos, Ru San Tan, Christian Michelet, Suzanne F. Bradley, R. Casillo, Thomas Tsaganos, M. Cereceda, Laura A. Drew, Magid Halim, François Alla, Tahaniyat Lalani, Carlos A. Mestres, David Rees, Sara Jane Salstrom, O. M. Butkevich, Patrick J. Commerford, Ignasi Anguera, Franz Wiesbauer, Ulrika Snygg-Martin, Lawrence P. Park, Didier Raoult, Tony M. Korman, Giovanni Dialetto, Zeina Kanafani, Antonio Toniolo, Suzana Bukovski, Christy C. Dixon, Tatiana Vinogradova, Jorge Thierer, Souha S. Kanj, Vinod Thomas, Daniel J. Sexton, Vance G. Fowler, Andrew M. Morris, S. Athanasia, Ren Tan, Carlos Cervera, Chirouze, C, Alla, F, Fowler VG, Jr, Sexton, Dj, Corey, Gr, Chu, Vh, Wang, A, Erpelding, Ml, DURANTE MANGONI, Emanuele, Fernández Hidalgo, N, Giannitsioti, E, Hannan, Mm, Lejko Zupanc, T, Miró, Jm, Muñoz, P, Murdoch, Dr, Tattevin, P, Tribouilloy, C, Hoen, B., Laboratoire Chrono-environnement ( LCE ), Université Bourgogne Franche-Comté ( UBFC ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Franche-Comté ( UFC ), Service des maladies infectieuses et tropicales, Centre Hospitalier Régional Universitaire [Besançon] ( CHRU Besançon ) -Hôpital Saint-Jacques, Duke University Medical Center, Monaldi Hospital, Mater Hospitals, University Medical Center Ljubljana, Institut d'Investigacions Biomèdiques August Pi i Sunyer ( IDIBAPS ), Universitat de Barcelona ( UB ), Clinical Microbiology and Infectious Diseases Department, Universidad Complutense de Madrid [Madrid] ( UCM ), Department of Pathology, University of Otago, Microbiology Unit, Canterbury Health Laboratories, Service des maladies infectieuses et réanimation médicale, Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Hôpital Pontchaillou, Mécanismes physiologiques et conséquences des calcifications cardiovasculaires: rôle des remodelages cardiovasculaires et osseux, Université de Picardie Jules Verne ( UPJV ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), CHU Pointe-à-Pitre/Abymes [Guadeloupe], Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon)-Hôpital Saint-Jacques, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Universitat de Barcelona (UB), Universidad Complutense de Madrid = Complutense University of Madrid [Madrid] (UCM), University of Otago [Dunedin, Nouvelle-Zélande], Service des maladies infectieuses et réanimation médicale [Rennes] = Infectious Disease and Intensive Care [Rennes], CHU Pontchaillou [Rennes], Université de Picardie Jules Verne (UPJV)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Régional Universitaire [Besançon] (CHRU Besançon)-Hôpital Saint-Jacques, Service des maladies infectieuses et réanimation médicale [Rennes], Hôpital Pontchaillou-Université de Rennes 1 (UR1), and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)

Subjects
Male, diagnosis, International Cooperation, Medizin, blood culture, Cohort Studies, surgery, [ SDV.MP ] Life Sciences [q-bio]/Microbiology and Parasitology, Prospective Studies, Prospective cohort study, Endocarditis, Mortality rate, heart valve, Middle Aged, Staphylococcal Infections, Heart Valves, prosthetic valve, 3. Good health, Treatment Outcome, Infectious Diseases, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, Infective endocarditis, Cohort, endocarditis, Female, Cohort study, Adult, Microbiology (medical), Staphylococcus aureus, medicine.medical_specialty, Endocarditis, Staphylococcus aureus, heart valve, combined treatment, blood culture, clinical microbiology, etiology, diagnosis, Prosthesis-Related Infections, etiology, Staphylococcal infections, Internal medicine, [ SDV.MHEP ] Life Sciences [q-bio]/Human health and pathology, 1-year mortality, Prosthetic valve, Surgery, Aged, Humans, Survival Analysis, medicine, combined treatment, clinical microbiology, Proportional hazards model, business.industry, medicine.disease, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract

International audience; Background - The impact of early valve surgery (EVS) on the outcome of Staphylococcus aureus (SA) prosthetic valve infective endocarditis (PVIE) is unresolved. The objective of this study was to evaluate the association between EVS, performed within the first 60 days of hospitalization, and outcome of SA PVIE within the International Collaboration on Endocarditis-Prospective Cohort Study. Methods - Participants were enrolled between June 2000 and December 2006. Cox proportional hazards modeling that included surgery as a time-dependent covariate and propensity adjustment for likelihood to receive cardiac surgery was used to evaluate the impact of EVS and 1-year all-cause mortality on patients with definite left-sided S. aureus PVIE and no history of injection drug use. Results - EVS was performed in 74 of the 168 (44.3%) patients. One-year mortality was significantly higher among patients with S. aureus PVIE than in patients with non-S. aureus PVIE (48.2% vs 32.9%; P = .003). Staphylococcus aureus PVIE patients who underwent EVS had a significantly lower 1-year mortality rate (33.8% vs 59.1%; P = .001). In multivariate, propensity-adjusted models, EVS was not associated with 1-year mortality (risk ratio, 0.67 [95% confidence interval, .39-1.15]; P = .15). Conclusions - In this prospective, multinational cohort of patients with S. aureus PVIE, EVS was not associated with reduced 1-year mortality. The decision to pursue EVS should be individualized for each patient, based upon infection-specific characteristics rather than solely upon the microbiology of the infection causing PVIE.

Published
2015

18. Caveolin-1-derived peptide attenuates cigarette smoke-induced airway and alveolar epithelial injury.

Author

Das DN, Puthusseri B, Gopu V, Krishnan V, Bhagavath AK, Bolla S, Saini Y, Criner GJ, Marchetti N, Tang H, Konduru NV, Fan L, and Shetty S

Subjects
Animals, Humans, Mice, Lung metabolism, Peptides pharmacology, Plasminogen Activator Inhibitor 1 metabolism, Tumor Suppressor Protein p53 metabolism, Caveolin 1 pharmacology, Cigarette Smoking adverse effects, Lung Injury pathology, Pulmonary Disease, Chronic Obstructive pathology, Pulmonary Emphysema pathology
Abstract

Chronic obstructive pulmonary disease (COPD) is a debilitating lung disease with no effective treatment that can reduce mortality or slow the disease progression. COPD is the third leading cause of global death and is characterized by airflow limitations due to chronic bronchitis and alveolar damage/emphysema. Chronic cigarette smoke (CS) exposure damages airway and alveolar epithelium and remains a major risk factor for the pathogenesis of COPD. We found that the expression of caveolin-1, a tumor suppressor protein; p53; and plasminogen activator inhibitor-1 (PAI-1), one of the downstream targets of p53, was markedly increased in airway epithelial cells (AECs) as well as in type II alveolar epithelial (AT2) cells from the lungs of patients with COPD or wild-type mice with CS-induced lung injury (CS-LI). Moreover, p53- and PAI-1-deficient mice resisted CS-LI. Furthermore, treatment of AECs, AT2 cells, or lung tissue slices from patients with COPD or mice with CS-LI with a seven amino acid caveolin-1 scaffolding domain peptide (CSP7) reduced mucus hypersecretion in AECs and improved AT2 cell viability. Notably, induction of PAI-1 expression via increased caveolin-1 and p53 contributed to mucous cell metaplasia and mucus hypersecretion in AECs, and reduced AT2 viability, due to increased senescence and apoptosis, which was abrogated by CSP7. In addition, treatment of wild-type mice having CS-LI with CSP7 by intraperitoneal injection or nebulization via airways attenuated mucus hypersecretion, alveolar injury, and significantly improved lung function. This study validates the potential therapeutic role of CSP7 for treating CS-LI and COPD. NEW & NOTEWORTHY Chronic cigarette smoke (CS) exposure remains a major risk factor for the pathogenesis of COPD, a debilitating disease with no effective treatment. Increased caveolin-1 mediated induction of p53 and downstream plasminogen activator inhibitor-1 (PAI-1) expression contributes to CS-induced airway mucus hypersecretion and alveolar wall damage. This is reversed by caveolin-1 scaffolding domain peptide (CSP7) in preclinical models, suggesting the therapeutic potential of CSP7 for treating CS-induced lung injury (CS-LI) and COPD.

Published
2023
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