Search

Your search keyword '"Adnan Hameed"' showing total 19 results
Start Over Author "Adnan Hameed" Topic biology
19 results on '"Adnan Hameed"'

1. Ultra-short-course and intermittent TB47-containing oral regimens produce stable cure against Buruli ulcer in a murine model and prevent the emergence of resistance for Mycobacterium ulcerans

Author

Yang Liu, Mahmudul Islam, Tianyu Zhang, H.M. Adnan Hameed, Shuai Wang, Zhili Lu, Yamin Gao, Lingmin Guo, Zhiyong Liu, Xirong Tian, and Cuiting Fang

Subjects
Buruli ulcer, Drug, TB47, medicine.medical_treatment, media_common.quotation_subject, Mutant, Drug resistance, Clofazimine, 03 medical and health sciences, 0302 clinical medicine, medicine, Chemotherapy, General Pharmacology, Toxicology and Pharmaceutics, 030304 developmental biology, media_common, 0303 health sciences, biology, Mycobacterium ulcerans, business.industry, lcsh:RM1-950, biology.organism_classification, medicine.disease, Virology, lcsh:Therapeutics. Pharmacology, QcrB, Murine model, 030220 oncology & carcinogenesis, Electron transport chain, Original Article, business, medicine.drug
Abstract

Buruli ulcer (BU), caused by Mycobacterium ulcerans, is currently treated with rifampin–streptomycin or rifampin–clarithromycin daily for 8 weeks recommended by World Health Organization (WHO). These options are lengthy with severe side effects. A new anti-tuberculosis drug, TB47, targeting QcrB in cytochrome bc1:aa3 complex is being developed in China. TB47-containing regimens were evaluated in a well-established murine model using an autoluminescent M. ulcerans strain. High-level TB47-resistant spontaneous M. ulcerans mutants were selected and their qcrB genes were sequenced. The in vivo activities of TB47 against both low-level and high-level TB47-resistant mutants were tested in BU murine model. Here, we show that TB47-containing oral 3-drug regimens can completely cure BU in ≤2 weeks for daily use or in ≤3 weeks given twice per week (6 doses in total). All high-level TB47-resistant mutants could only be selected using the low-level mutants which were still sensitive to TB47 in mice. This is the first report of double mutations in QcrB in mycobacteria. In summary, TB47-containing regimens have promise to cure BU highly effectively and prevent the emergence of drug resistance. Novel QcrB mutations found here may guide the potential clinical molecular diagnosis of resistance and the discovery of new drugs against the high-level resistant mutants., Graphical abstract Novel regimens containing TB47, a QcrB inhibitor, cure Buruli ulcer in a murine model within 14 days or with only 6 doses. TB47 was active against the low-level TB47-resistant mutants but inactive against the high-level ones in which double mutations in QcrB were first found.Image 1

Published
2021

2. Phenotypic and Genotypic Characterization of Streptomycin-Resistant Multidrug-Resistant Mycobacterium tuberculosis Clinical Isolates in Southern China

Author

Xinjie Li, Tianyu Zhang, Yaoju Tan, Nanshan Zhong, Yamin Gao, Mahmudul Islam, Lingmin Guo, Wing Wai Yew, Shouyong Tan, Shuai Wang, Xiaoyin Cai, Chiranjibi Chhotaray, Zhiyong Liu, Zhili Lu, H.M. Adnan Hameed, Xingshan Cai, Yang Liu, and Jianxiong Liu

Subjects
Microbiology (medical), Pharmacology, 0303 health sciences, Tuberculosis, 030306 microbiology, medicine.drug_class, Immunology, Antibiotics, Biology, medicine.disease, biology.organism_classification, Microbiology, Phenotype, Multiple drug resistance, Mycobacterium tuberculosis, 03 medical and health sciences, Streptomycin, Genotype, medicine, Multidrug-Resistant Mycobacterium tuberculosis, 030304 developmental biology, medicine.drug
Abstract

Streptomycin (STR) is the first antibiotic used in the treatment of tuberculosis (TB) and the earliest antituberculosis drug with acquired resistance developed by Mycobacterium tuberculosis. The hi...

Published
2020
Full Text
View/download PDF

3. Detection of Novel Gene Mutations Associated with Pyrazinamide Resistance in Multidrug-Resistant Mycobacterium tuberculosis Clinical Isolates in Southern China

Author

Shuai Wang, Cuiting Fang, Zhiyong Liu, Wing Wai Yew, Tianyu Zhang, Mahmudul Islam, Shouyong Tan, Hm Adnan Hameed, Nanshan Zhong, Jianxiong Liu, Yaoju Tan, Zhili Lu, and Chiranjibi Chhotaray

Subjects
0301 basic medicine, Pharmacology, Genetics, Tuberculosis, 030106 microbiology, Drug resistance, Biology, Pyrazinamide, medicine.disease, biology.organism_classification, Frameshift mutation, Mycobacterium tuberculosis, 03 medical and health sciences, 0302 clinical medicine, Infectious Diseases, PncA, Genotype, medicine, Pharmacology (medical), Multidrug-Resistant Mycobacterium tuberculosis, 030212 general & internal medicine, medicine.drug
Abstract

Objective Pyrazinamide (PZA) is a cornerstone of modern tuberculosis regimens. This study aimed to investigate the performance of genotypic testing of pncA + upstream region, rpsA, panD, Rv2783c, and clpC1 genes to add insights for more accurate molecular diagnosis of PZA-resistant (R) Mycobacterium tuberculosis. Methods Drug susceptibility testing, sequencing analysis of PZA-related genes including the entire operon of pncA (Rv2044c-pncA-Rv2042c) and PZase assay were performed for 448 M. tuberculosis clinical isolates. Results Our data showed that among 448 M. tuberculosis clinical isolates, 113 were MDR, 195 pre-XDR and 70 XDR TB, while the remaining 70 strains had other combinations of drug-resistance. A total of 60.04% (269/448) M. tuberculosis clinical isolates were resistant to PZA, of which 78/113 were MDR, 119/195 pre-XDR and 29/70 XDR TB strains. PZAR isolates have predominance (83.3%) of Beijing genotype. Genotypic characterization of Rv2044c-pncA-Rv2042c revealed novel nonsynonymous mutations in Rv2044c with negative PZase activity which led to confer PZAR. Compared with phenotypic data, 84.38% (227/269) PZAR strains with mutations in pncA + upstream region exhibited 83.64% sensitivity but the combined evaluation of the mutations in rpsA 2.60% (7/269), panD 1.48% (4/269), Rv2783c 1.11% (3/269) and Rv2044c 0.74% (2/269) increased the sensitivity to 89.59%. Fifty-seven novel mutations were identified in this study. Interestingly, a frameshift deletion (C-114del) in upstream of pncAwt nullified the effect of A-11G mutation and induced positive PZase activity, divergent from five PZase negative A-11G PZAR mutants. Twenty-six PZAR strains having wild-type-sequenced genes with positive or negative PZase suggest the existence of unknown resistance mechanisms. Conclusion Our study revealed that PZAR rate in MDR and pre-XDR TB was markedly higher in southern China. The concomitant evaluation of pncA + UFR, rpsA, panD, Rv2783c, and Rv2044c provides more dependable genotypic results of PZA resistance. Fifty-seven novel mutations/indels in this study may play a vital role as diagnostic markers. The upstream region of pncA and PZase regulation are valuable to explore the unknown mechanism of PZA-resistance.

Published
2020
Full Text
View/download PDF

4. Comparative Analysis of Whole-Genome and Methylome Profiles of a Smooth and a Rough Mycobacterium abscessus Clinical Strain

Author

Jianxiong Liu, Xingshan Cai, Shuai Wang, Mahmudul Islam, Muhammad Shehroz, Tianyu Zhang, Goverdhan Surineni, H.M. Adnan Hameed, Yaoju Tan, Cuiting Fang, Amjad Ali, Shouyong Tan, Zhili Lu, Chiranjibi Chhotaray, and Yang Liu

Subjects
single nucleotide variation, Genetics, Comparative genomics, Whole genome sequencing, whole genome sequencing, 0303 health sciences, 030306 microbiology, Pan-genome, comparative genomics, QH426-470, Biology, Mycobacterium abscessus, biology.organism_classification, Genome, Structural variation, 03 medical and health sciences, smrt sequencing, methylation, mycobacterium abscessus, Molecular Biology, Gene, Genetics (clinical), 030304 developmental biology, Reference genome
Abstract

Mycobacterium abscessus is a fast growing Mycobacterium species mainly causing skin and respiratory infections in human. M. abscessus is resistant to numerous drugs, which is a major challenge for the treatment. In this study, we have sequenced the genomes of two clinical M. abscessus strains having rough and smooth morphology, using the single molecule real-time and Illumina HiSeq sequencing technology. In addition, we reported the first comparative methylome profiles of a rough and a smooth M. abscessus clinical strains. The number of N4-methylcytosine (4mC) and N6-methyladenine (6mA) modified bases obtained from smooth phenotype were two-fold and 1.6 fold respectively higher than that of rough phenotype. We have also identified 4 distinct novel motifs in two clinical strains and genes encoding antibiotic-modifying/targeting enzymes and genes associated with intracellular survivability having different methylation patterns. To our knowledge, this is the first report about genome-wide methylation profiles of M. abscessus strains and identification of a natural linear plasmid (15 kb) in this critical pathogen harboring methylated bases. The pan-genome analysis of 25 M. abscessus strains including two clinical strains revealed an open pan genome comprises of 7596 gene clusters. Likewise, structural variation analysis revealed that the genome of rough phenotype strain contains more insertions and deletions than the smooth phenotype and that of the reference strain. A total of 391 single nucleotide variations responsible for the non-synonymous mutations were detected in clinical strains compared to the reference genome. The comparative genomic analysis elucidates the genome plasticity in this emerging pathogen. Furthermore, the detection of genome-wide methylation profiles of M. abscessus clinical strains may provide insight into the significant role of DNA methylation in pathogenicity and drug resistance in this opportunistic pathogen.

Published
2020
Full Text
View/download PDF

5. Phenotypic and genotypic characterization of levofloxacin- and moxifloxacin-resistant Mycobacterium tuberculosis clinical isolates in southern China

Author

H.M. Adnan Hameed, Chiranjibi Chhotaray, Mahmudul Islam, Shouyong Tan, Jianxiong Liu, Tianyu Zhang, Zhiyong Liu, Nanshan Zhong, Yaoju Tan, Yamin Gao, Lingmin Guo, Wing Wai Yew, and Shuai Wang

Subjects
0301 basic medicine, Pulmonary and Respiratory Medicine, Tuberculosis, biology, business.industry, 030106 microbiology, biochemical phenomena, metabolism, and nutrition, bacterial infections and mycoses, medicine.disease, biology.organism_classification, DNA gyrase, Microbiology, Mycobacterium tuberculosis, 03 medical and health sciences, 030104 developmental biology, Levofloxacin, Moxifloxacin, Multiplex polymerase chain reaction, Genotype, medicine, Original Article, business, Cross-resistance, medicine.drug
Abstract

Background: Levofloxacin (LVX) and Moxifloxacin (MXF) are the cornerstones for treatment of multidrug-resistant tuberculosis (MDR-TB). China is one of the highest MDR- and fluoroquinolones (FQ)- resistant TB burdens countries. DNA gyrase encoded by gyr genes is the main target of FQ in Mycobacterium tuberculosis (MTB). The prevalence and molecular characterization of LVX- and MXF-resistant MTB strains from southern China were examined in this study. Methods: Drug susceptibility testing (DST) of 400 MTB clinical isolates was evaluated by proportion method on Lowenstein-Jensen (LJ) medium against ten drugs. The sequencing of entire gyrA and gyrB genes and multiplex PCR were performed to distinguish the prevalence of mutant types in Beijing and non-Beijing genotypes. Results: Three hundred and twenty-one out of four hundred (80.25%) drug-resistant isolates (resistant > one drug) were categorized as 83/321 (25.80%) MDR, 174/321 (54.20%) pre-XDR and 64/321 (19.93%) XDR-MTB. Overall, 303/400 (75.75%) LVX- and 292/400 (73.00%) MXF-resistant (R) MTB strains were identified. Two hundred seventy-one out of three hundred and three (89.43%) resistant strains carried mutations in gyrA and 91/303 (30.03%) in gyrB . Interestingly, 18 novel mutations were detected in gyrA and gyrB genes. Mutations at (A90, D94) and (T500, G510, G512) frequently existed in QRDR(s) of gyrA and gyrB respectively in 286/400 (71.50%) LVX R MXF R strains. The novel mutations in- and out-side the QRDR of gyrA (L105R, A126E, M127K, D151T, V165A) and gyrB (D461H, N499S, G520A) increased the sensitivity and consistency of genotypic tests. Notably, 25 LVX R MXF R strains were found with unknown resistance mechanisms. Conclusions: Mutations in QRDR(s) were concomitantly associated with Beijing and non-Beijing genotypes. The prevalence of resistance and cross-resistance between LVX and MXF in MTB isolates from southern China was immensely higher than other countries. Our valuable findings provide the substantial implications to improve the reliability of genotypic diagnostic tests relying on potential resistance conferring mutations in entire gyr genes.

Published
2019
Full Text
View/download PDF

6. Lipoprotein(a) and Benefit of PCSK9 Inhibition in Patients With Nominally Controlled LDL Cholesterol

Author

Gregory G. Schwartz, Michael Szarek, Vera A. Bittner, Rafael Diaz, Shaun G. Goodman, J. Wouter Jukema, Ulf Landmesser, Patricio López-Jaramillo, Garen Manvelian, Robert Pordy, Michel Scemama, Peter R. Sinnaeve, Harvey D. White, Ph Gabriel Steg, P.h. Gabriel Steg, Deepak L. Bhatt, Robert A. Harrington, Andreas M. Zeiher, Pierluigi Tricoci, Matthew T. Roe, Kenneth W. Mahaffey, Jay M. Edelberg, Corinne Hanotin, Guillaume Lecorps, Angèle Moryusef, William J. Sasiela, Jean-François Tamby, Philip E. Aylward, Heinz Drexel, Peter Sinnaeve, Mirza Dilic, Renato D. Lopes, Nina N. Gotcheva, Juan-Carlos Prieto, Huo Yong, Ivan Pećin, Zeljko Reiner, Petr Ostadal, Steen Hvitfeldt Poulsen, Margus Viigimaa, Markku S. Nieminen, Nicolas Danchin, Vakhtang Chumburidze, Nikolaus Marx, Evangelos Liberopoulos, Pablo Carlos Montenegro Valdovinos, Hung-Fat Tse, Robert Gabor Kiss, Denis Xavier, Doron Zahger, Marco Valgimigli, Takeshi Kimura, Hyo Soo Kim, Sang-Hyun Kim, Andrejs Erglis, Aleksandras Laucevicius, Sasko Kedev, Khalid Yusoff, Gabriel Arturo Ramos López, Marco Alings, Sigrun Halvorsen, Roger M. Correa Flores, Rody G. Sy, Andrzej Budaj, Joao Morais, Maria Dorobantu, Yuri Karpov, Arsen D. Ristic, Terrance Chua, Jan Murin, Zlatko Fras, Anthony J. Dalby, José Tuñón, H. Asita de Silva, Emil Hagström, Christian Müller, Chern-En Chiang, Piyamitr Sritara, Sema Guneri, Alexander Parkhomenko, Kausik K. Ray, Patrick M. Moriarty, Robert Vogel, Bernard Chaitman, Sheryl F. Kelsey, Anders G. Olsson, Jean-Lucien Rouleau, Maarten L. Simoons, Karen Alexander, Chiara Meloni, Robert Rosenson, Eric J.G. Sijbrands, John H. Alexander, Luciana Armaganijan, Akshay Bagai, Maria Cecilia Bahit, J. Matthew Brennan, Shaun Clifton, Adam D. DeVore, Shalonda Deloatch, Sheila Dickey, Keith Dombrowski, Grégory Ducrocq, Zubin Eapen, Patricia Endsley, Arleen Eppinger, Robert W. Harrison, Connie Ng Hess, Mark A. Hlatky, Joseph Dedrick Jordan, Joshua W. Knowles, Bradley J. Kolls, David F. Kong, Sergio Leonardi, Linda Lillis, David J. Maron, Jill Marcus, Robin Mathews, Rajendra H. Mehta, Robert J. Mentz, Humberto Graner Moreira, Chetan B. Patel, Sabrina Bernardez Pereira, Lynn Perkins, Thomas J. Povsic, Etienne Puymirat, William Schuyler Jones, Bimal R. Shah, Matthew W. Sherwood, Kenya Stringfellow, Darin Sujjavanich, Mustafa Toma, Charlene Trotter, Sean F.P. van Diepen, Matthew D. Wilson, Andrew Tze-Kay Yan, Lilia B. Schiavi, Marcelo Garrido, Andrés F. Alvarisqueta, Sonia A. Sassone, Anselmo P. Bordonava, Alberto E. Alves De Lima, Jorge M. Schmidberg, Ernesto A. Duronto, Orlando C. Caruso, Leonardo P. Novaretto, Miguel Angel Hominal, Oscar R. Montaña, Alberto Caccavo, Oscar A. Gomez Vilamajo, Alberto J. Lorenzatti, Luis R. Cartasegna, Gustavo A. Paterlini, Ignacio J. Mackinnon, Guillermo D. Caime, Marcos Amuchastegui, Oscar Salomone, Oscar R. Codutti, Horacio O. Jure, Julio O.E. Bono, Adrian D. Hrabar, Julio A. Vallejos, Rodolfo A. Ahuad Guerrero, Federico Novoa, Cristian A. Patocchi, Cesar J. Zaidman, Maria E. Giuliano, Ricardo D. Dran, Marisa L. Vico, Gabriela S. Carnero, Pablo N. Guzman, Juan C. Medrano Allende, Daniela F. Garcia Brasca, Miguel H. Bustamante Labarta, Sebastian Nani, Eduardo D.S. Blumberg, Hugo R. Colombo, Alberto Liberman, Victorino Fuentealba, Hector L. Luciardi, Gabriel D. Waisman, Mario A. Berli, Ruben O. Garcia Duran, Horacio G. Cestari, Hugo A. Luquez, Jorge A. Giordano, Silvia S. Saavedra, Gerardo Zapata, Osvaldo Costamagna, Susana Llois, Jonathon H. Waites, Nicholas Collins, Allan Soward, Chris L.S. Hii, James Shaw, Margaret A. Arstall, John Horowitz, Daniel Ninio, James F. Rogers, David Colquhoun, Romulo E. Oqueli Flores, Philip Roberts-Thomson, Owen Raffel, Sam J. Lehman, Constantine Aroney, Steven G.M. Coverdale, Paul J. Garrahy, Gregory Starmer, Mark Sader, Patrick A. Carroll, Ronald Dick, Robert Zweiker, Uta Hoppe, Kurt Huber, Rudolf Berger, Georg Delle-Karth, Bernhard Frey, Dirk Faes, Kurt Hermans, Bruno Pirenne, Attilio Leone, Etienne Hoffer, Mathias C.M. Vrolix, Luc De Wolf, Bart Wollaert, Marc Castadot, Karl Dujardin, Christophe Beauloye, Geert Vervoort, Harry Striekwold, Carl Convens, John Roosen, Emanuele Barbato, Marc Claeys, Frank Cools, Ibrahim Terzic, Fahir Barakovic, Zlatko Midzic, Belma Pojskic, Emir Fazlibegovic, Azra Durak-Nalbantic, Mehmed Kulić, Dusko Vulic, Adis Muslibegovic, Boris Goronja, Gilmar Reis, Luciano Sousa, Jose C. Nicolau, Flavio E. Giorgeto, Ricardo P. Silva, Lilia Nigro Maia, Rafael Rech, Paulo R.F. Rossi, Maria José A.G. Cerqueira, Norberto Duda, Renato Kalil, Adrian Kormann, José Antonio M. Abrantes, Pedro Pimentel Filho, Ana Priscila Soggia, Mayler O.N. de Santos, Fernando Neuenschwander, Luiz C. Bodanese, Yorghos L. Michalaros, Freddy G. Eliaschewitz, Maria H. Vidotti, Paulo E. Leaes, Roberto V. Botelho, Sergio Kaiser, Euler Roberto F. Fernandes Manenti, Dalton B. Precoma, Jose C. Moura Jorge, Pedro Silva, Jose A. Silveira, Wladmir Saporito, Jose A. Marin Neto, Gilson S. Feitosa, Luiz Eduardo F. Ritt, Juliana A. de Souza, Fernando Costa, Weimar K.S.B. Souza, Helder J.L. Reis, Leandro Machado, José Carlos Aidar Ayoub, Georgi V. Todorov, Fedya P. Nikolov, Elena S. Velcheva, Maria L. Tzekova, Haralambi O. Benov, Stanislav L. Petranov, Haralin S. Tumbev, Nina S. Shehova-Yankova, Dimitar T. Markov, Dimitar H. Raev, Mihail N. Mollov, Kostadin N. Kichukov, Katya A. Ilieva-Pandeva, Raya Ivanova, Maryana Gospodinov, Valentina M. Mincheva, Petar V. Lazov, Bojidar I. Dimov, Manohara Senaratne, James Stone, Jan Kornder, Stephen Pearce, Danielle Dion, Daniel Savard, Yves Pesant, Amritanshu Pandey, Simon Robinson, Gilbert Gosselin, Saul Vizel, Gordon Hoag, Ronald Bourgeois, Anne Morisset, Eric Sabbah, Bruce Sussex, Simon Kouz, Paul MacDonald, Ariel Diaz, Nicolas Michaud, David Fell, Raymond Leung, Tycho Vuurmans, Christopher Lai, Frank Nigro, Richard Davies, Gustavo Nogareda, Ram Vijayaraghavan, John Ducas, Serge Lepage, Shamir Mehta, James Cha, Robert Dupuis, Peter Fong, Sohrab Lutchmedial, Josep Rodes-Cabau, Hussein Fadlallah, David Cleveland, Thao Huynh, Iqbal Bata, Adnan Hameed, Cristian Pincetti, Sergio Potthoff, Juan C. Prieto, Monica Acevedo, Arnoldo Aguirre, Margarita Vejar, Mario Yañez, Guillermo Araneda, Mauricio Fernandez, Luis Perez, Paola Varleta, Fernando Florenzano, Laura Huidobro, Carlos A. Raffo, Claudia Olivares, Leonardo Nahuelpan, Humberto Montecinos, Jiyan Chen, Yugang Dong, Weijian Huang, Jianzhong Wang, Shi'An Huang, Zhuhua Yao, Xiang Li, Lan Cui, Wenhua Lin, Yuemin Sun, Jingfeng Wang, Jianping Li, Xuelian Zhang, Hong Zhu, Dandan Chen, Lan Huang, Shaohong Dong, Guohai Su, Biao Xu, Xi Su, Xiaoshu Cheng, Jinxiu Lin, Wenxia Zong, Huanming Li, Yi Feng, Dingli Xu, Xinchun Yang, Yuannan Ke, Xuefeng Lin, Zheng Zhang, Zeqi Zheng, Zhurong Luo, Yundai Chen, Chunhua Ding, Yi Zhong, Yang Zheng, Xiaodong Li, Daoquan Peng, Shuiping Zhao, Ying Li, Xuebo Liu, Meng Wei, Shaowen Liu, Yihua Yu, Baiming Qu, Weihong Jiang, Yujie Zhou, Xingsheng Zhao, Zuyi Yuan, Ying Guo, Xiping Xu, Xubo Shi, Junbo Ge, Guosheng Fu, Feng Bai, Weiyi Fang, Xiling Shou, Xiangjun Yang, Jian'An Wang, Meixiang Xiang, Yingxian Sun, Qinghua Lu, Ruiyan Zhang, Jianhua Zhu, Yizhou Xu, Zhongcai Fan, Tianchang Li, Chun Wu, Nicolas Jaramillo, Gregorio Sanchez Vallejo, Diana C. Luna Botia, Rodrigo Botero Lopez, Dora I. Molina De Salazar, Alberto J. Cadena Bonfanti, Carlos Cotes Aroca, Juan Diego Higuera, Marco Blanquicett, Sandra I. Barrera Silva, Henry J. Garcia Lozada, Julian A. Coronel Arroyo, Jose L. Accini Mendoza, Ricardo L. Fernandez Ruiz, Alvaro M. Quintero Ossa, Fernando G. Manzur Jatin, Aristides Sotomayor Herazo, Jeffrey Castellanos Parada, Rafael Suarez Arambula, Miguel A. Urina Triana, Angela M. Fernandez Trujillo, Maja Strozzi, Siniša Car, Melita Jerić, Davor Miličić, Martina Lovrić Benčić, Hrvoje Pintarić, Đeiti Prvulović, Jozica Šikić, Viktor Peršić, Dean Mileta, Kresimir Štambuk, Zdravko Babić, Vjekoslav Tomulic, Josip Lukenda, Stanka Mejic-Krstulovic, Boris Starcevic, Jindrich Spinar, David Horak, Zdenek Velicka, Josef Stasek, David Alan, Vilma Machova, Ales Linhart, Vojtech Novotny, Vladimir Kaucak, Richard Rokyta, Robert Naplava, Zdenek Coufal, Vera Adamkova, Ivo Podpera, Jiri Zizka, Zuzana Motovska, Ivana Marusincova, Premysl Svab, Petr Heinc, Jiri Kuchar, Petr Povolny, Jiri Matuska, Steen H. Poulsen, Bent Raungaard, Peter Clemmensen, Lia E. Bang, Ole May, Morten Bøttcher, Jens D. Hove, Lars Frost, Gunnar Gislason, John Larsen, Peter Betton Johansen, Flemming Hald, Peter Johansen, Jørgen Jeppesen, Tonny Nielsen, Kjeld S. Kristensen, Piotr Maria Walichiewicz, Jens D. Lomholdt, Ib C. Klausen, Peter Kaiser Nielsen, Flemming Davidsen, Lars Videbaek, Mai Soots, Veiko Vahula, Anu Hedman, Üllar Soopõld, Kaja Märtsin, Tiina Jurgenson, Arved Kristjan, Heikki Huikuri, Juhani Airaksinen Pierre Coste, Emile Ferrari, Olivier Morel, Gilles Montalescot, Jacques Machecourt, Gilles Barone-Rochette, Jacques Mansourati, Yves Cottin, Florence Leclercq, Abdelkader Belhassane, Nicolas Delarche, Franck Boccara, Franck Paganelli, Jérôme Clerc, Francois Schiele, Victor Aboyans, Vincent Probst, Jacques Berland, Thierry Lefèvre, Bernard Citron, Irakli Khintibidze, Tamaz Shaburishvili, Zurab Pagava, Ramaz Ghlonti, Zaza Lominadze, George Khabeishvili, Rayyan Hemetsberger, Kemala Edward, Ursula Rauch-Kröhnert, Matthias Stratmann, Karl-Friedrich Appel, Ekkehard Schmidt, Heyder Omran, Christoph Stellbrink, Thomas Dorsel, Emmanouil Lianopoulos, Hans Friedrich Vöhringer, Roger Marx, Andreas Zirlik, Detlev Schellenberg, Thomas Heitzer, Ulrich Laufs, Christian Werner, Stephan Gielen, Sebastian Nuding, Bernhard Winkelmann, Steffen Behrens, Karsten Sydow, Mahir Karakas, Gregor Simonis, Thomas Muenzel, Nikos Werner, Stefan Leggewie, Dirk Böcker, Rüdiger Braun-Dullaeus, Nicole Toursarkissian, Michael Jeserich, Matthias Weißbrodt, Tim Schaeufele, Joachim Weil, Heinz Völler, Johannes Waltenberger, Mohammed Natour, Susanne Schmitt, Dirk Müller-Wieland, Stephan Steiner, Lothar Heidenreich, Elmar Offers, Uwe Gremmler, Holger Killat, Werner Rieker, Sotiris Patsilinakos, Athanasios Kartalis, Athanassios Manolis, Dimitrios Sionis, Geargios Chachalis, Ioannis Skoumas, Vasilios Athyros, Panagiotis Vardas, Frangkiskos Parthenakis, John Lekakis, Apostolos Hatzitolios, Sergio R. Fausto Ovando, Juan L. Arango Benecke, Edgar R. Rodriguez De Leon, Bryan P.Y. Yan, David C.W. Siu, Tibor Turi, Bela Merkely, Imre Ungi, Geza Lupkovics, Lajos Nagy, András Katona, István Édes, Gábor Müller, Iván Horvath, Tibor Kapin, Zsolt Szigeti, József Faluközy, Mukund Kumbla, Manjinder Sandhu, Sharath Annam, Naveen Reddy Proddutur, Reddy Regella, Rajendra K. Premchand, Ajaykumar Mahajan, Sudhir Pawar, Atul D. Abhyanakar, Prafulla Kerkar, Ravishankar A. Govinda, Abraham Oomman, Dhurjati Sinha, Sachin N. Patil, Dhiman Kahali, Jitendra Sawhney, Abhijeet B. Joshi, Sanjeev Chaudhary, Pankaj Harkut, Santanu Guha, Sanjay Porwal, Srimannarayana Jujjuru, Ramesh B. Pothineni, Minguel R. Monteiro, Aziz Khan, Shamanna S. Iyengar, Jasprakash Singh Grewal, Manoj Chopda, Mahesh C. Fulwani, Aparna Patange, Patil Sachin, Vijay K. Chopra, Naresh K. Goyal, Rituparna Shinde, Gajendra V. Manakshe, Nitin Patki, Sumeet Sethi, Vengatesh Munusamy, Sunil Karnaand Sunil Thanvi, Srilakshmi Adhyapak, Chandrakant Patil, Ulhas Pandurangi, Rishabh Mathur, Jugal Gupta, Suhas Kalashetti, Ajit Bhagwat, Bagirath Raghuraman, Shiv Kumar Yerra, Prasant Bhansali, Rohidas Borse, Patil Rahul, Srihari Das, Vinay Kumar, Jabir Abdullakutty, Shireesh Saathe, Priya Palimkar, Jabir Abdullkutty, Shireesh Sathe, Shaul Atar, Michael Shechter, Morris Mosseri, Yaron Arbel, Chorin Ehud, Havakuk Ofer, Chaim Lotan, Uri Rosenschein, Amos Katz, Yaakov Henkin, Adi Francis, Marc Klutstein, Eugenia Nikolsky, Robert Zukermann, Yoav Turgeman, Majdi Halabi, Alon Marmor, Ran Kornowski, Michael Jonas, Offer Amir, Yonathan Hasin, Yoseph Rozenman, Shmuel Fuchs, Vered Zvi, Osamah Hussein, Dov Gavish, Zvi Vered, Yoseph Caraco, Mazen Elias, Naveh Tov, Efrat Wolfovitz, Michael Lishner, Nizar Elias, Giancarlo Piovaccari, Annamaria De Pellegrin, Raffaella Garbelotto, Gabriele Guardigli, Valgimigli Marco, Giovanni Licciardello, Carla Auguadro, Filippo Scalise, Claudio Cuccia, Alessandro Salvioni, Giuseppe Musumeci, Michelle Senni, Paolo Calabrò, Salvatore Novo, Pompilio Faggiano, Marco Metra, Nicoletta B. De Cesare, Sergio Berti, Claudio Cavallini, Enrico Puccioni, Marcello Galvani, Maurizio Tespili, Piermarco Piatti, Michela Palvarini, Giuseppe De Luca, Roberto Violini, Alessandro De Leo, Zoran Olivari, Pasquale Perrone Filardi, Maurizio Ferratini, Vittorio Racca, Kazuoki Dai, Yuji Shimatani, Haruo Kamiya, Kenji Ando, Yoshihiro Takeda, Yoshihiro Morino, Yoshiki Hata, Kazuo Kimura, Koichi Kishi, Ichiro Michishita, Hiroki Uehara, Toshinori Higashikata, Atsushi Hirayama, Keiji Hirooka, Yasuji Doi, Satoru Sakagami, Shuichi Taguchi, Akihiro Koike, Hiroyuki Fujinaga, Shinji Koba, Ken Kozuma, Tomohiro Kawasaki, Yujiro Ono, Masatoshi Shimizu, Yousuke Katsuda, Atsuyuki Wada, Toshiro Shinke, Junya Ako, Kenshi Fujii, Toshiyuki Takahashi, Tomohiro Sakamoto, Koichi Nakao, Yutaka Furukawa, Hiroshi Sugino, Ritsu Tamura, Toshiaki Mano, Masaaki Uematsu, Noriaki Utsu, Kashima Ito, Takuya Haraguchi, Katsuhiko Sato, Yasunori Ueda, Akira Nishibe, Kazuteru Fujimoto, Motomaru Masutani, Jung Han Yoon, Hack-Lyoung Kim, Hun Sik Park, In-Ho Chae, Moo Hyun Kim, Myung Ho Jeong, Seungwoon Rha, Chongjin Kim, Hae Young Kim, Taekjong Hong, Seung-Jea Tahk, Youngkwon Kim, Arija Busmane, Natalija Pontaga, Aldis Strelnieks, Iveta Mintale, Iveta Sime, Zaneta Petrulioniene, Roma Kavaliauskiene, Ruta Jurgaitiene, Gintare Sakalyte, Rimvydas Slapikas, Sigute Norkiene, Nerijus Misonis, Aleksandras Kibarskis, Raimondas Kubilius, Stojko Bojovski, Nensi Lozance, Aleksandar Kjovkaroski, Snezana Doncovska, Tiong Kiam Ong, Sazzli Kasim, Oteh Maskon, Balachandran Kandasamy, Houng B. Liew, Wan Mohd Izani Wan Mohamed, Armando García Castillo, Jorge Carrillo Calvillo, Pedro Fajardo Campos, Juan Carlos Núñez Fragoso, Edmundo Alfredo Bayram Llamas, Marco Antonio Alcocer Gamba, Jaime Carranza Madrigal, Luis Gerardo González Salas, Enrique López Rosas, Belinda González Díaz, Eduardo Salcido Vázquez, Alfredo Nacoud Ackar, Guillermo Antonio Llamas Esperón, Carlos Rodolfo Martínez Sánchez, María Guerrero De Leon, Rodrigo Suarez Otero, Guillermo Fanghänel Salmón, Jesús Antonio Pérez Ríos, José Angel Garza Ruíz, Robert W. Breedveld, Margriet Feenema-Aardema, Alida Borger-Van Der Burg, Pieter A.M. Hoogslag, Harry Suryapranata, Antonius Oomen, Paulus Van Haelst, Margriet Feenema-Aradema, Jacobijne J. Wiersma, Dirk Basart, Ruud M.A. Van Der Wal, Peter Zwart, Pascalle Monraats, Henricus Van Kesteren, Ioannis Karalis, Johan Jukema, Gerardus J.E. Verdel, Bart R.G. Brueren, Roland PTh Troquay, Eric P. Viergever, Nadea Y.Y. Al-Windy, Gerard L. Bartels, Jan H. Cornel, Walter R.M. Hermans, Johannes P.R. Herrman, Robert J. Bos, Reginald G.E.J. Groutars, Coenraad C. Van Der Zwaan, Refik Kaplan, Raymond Lionarons, Eelko Ronner, Bjorn E. Groenemeijer, Patrick N.A. Bronzwaer, Anho A.H. Liem, Bernard J.W.M. Rensing, Marcel J.J.A. Bokern, Remco Nijmeijer, Ferry M.R.J. Hersbach, Frank F. Willems, Antonius T.M. Gosselink, Saman Rasoul, John Elliott, Gerard Wilkins, Raewyn Fisher, Douglas Scott, Hamish Hart, Ralph Stewart, Scott Harding, Ian Ternouth, Nicholas Fisher, Samuel Wilson, Denise Aitken, Russell Anscombe, Laura Davidson, Tadeusz Tomala, Ottar Nygård, Jon Arne Sparby, Kjell Andersen, Lars Gullestad, Jarle Jortveit, Peter S. Munk, Erlend gyllensten Singsaas, Ulf Hurtig, Jorge R. Calderon Ticona, Julio R. Durand Velasquez, Sandra A. Negron Miguel, Enrique S. Sanabria Perez, Jesus M. Carrion Chambilla, Carlos A. Chavez Ayala, Reynaldo P. Castillo Leon, Rolando J. Vargas Gonzales, Jose D. Hernandez Zuniga, Luis A. Camacho Cosavalente, Jorge E. Bravo Mannucci, Javier Heredia Landeo, Nassip C. Llerena Navarro, Yudy M. Roldan Concha, Víctor E. Rodriguez Chavez, Henry A. Anchante Hernandez, Carlos A. Zea Nunez, Walter Mogrovejo Ramos, Arthur Ferrolino, Rosa Allyn G. Sy, Louie Tirador, Generoso Matiga, Raul Martin Coching, Alisa Bernan, Gregorio Rogelio, Dante D. Morales, Edgar Tan, Dennis Jose Sulit, Adrian Wlodarczak, Krystyna Jaworska, Grzegorz Skonieczny, Lidia Pawlowicz, Pawel Wojewoda, Benita Busz-Papiez, Janusz Bednarski, Aleksander Goch, Pawel Staneta, Elzbieta Dulak, Krzysztof Saminski, Wlodzimierz Krasowski, Wanda Sudnik, Aleksander Zurakowski, Marcin Skorski, Roman Lysek, Beata Miklaszewicz, Jacek Kubica, Jan Andrzej Lipko, Edyta Kostarska-Srokosz, Marek Piepiorka, Anna Drzewiecka, Ryszard Sciborski, Arkadiusz Stasiewski, Tomasz Blicharski, Leszek Bystryk, Michal Szpajer, Marek Korol, Tomasz Czerski, Ewa Mirek-Bryniarska, Jacek Gniot, Andrzej Lubinski, Jerzy Gorny, Edward Franek, Grzegorz Raczak, Hanna Szwed, Pedro Monteiro, Jose Mesquita Bastos, Helder H. Pereira, Dinis Martins, Filipe Seixo, Carlos Mendonça, Ana Botelho, Francisca Caetano, Bogdan Minescu, Octavian Istratoaie, Dan N. Tesloianu, Gabriel Cristian, Silviu Dumitrescu, Cristian G.C. Podoleanu, Mircea C.A. Constantinescu, Cristina M. Bengus, Constantin Militaru, Doina Rosu, Irinel R. Parepa, Adrian V. Matei, Tom M. Alexandru, Mihaela Malis, Ioan Coman, Rodica Stanescu-Cioranu, Doina Dimulescu, Yury Shvarts, Olga Orlikova, Zhanna Kobalava, Olga L. Barbarash, Valentin Markov, Nadezhda Lyamina, Alexander Gordienko, Konstantin Zrazhevsky, Alexander Y. Vishnevsky, Victor Gurevich, Raisa Stryuk, Nikita V. Lomakin, Igor Bokarev, Tatiana Khlevchuk, Sergey Shalaev, Larisa Khaisheva, Petr Chizhov, Inna Viktorova, Natalya Osokina, Vladimir Shchekotov, Evgenia Akatova, Galina Chumakova, Igor Libov, Mikhail I. Voevoda, Tatyana V. Tretyakova, Evgeny Baranov, Sergey Shustov, Sergey Yakushin, Ivan Gordeev, Niiaz Khasanov, Olga Reshetko, Tatiana Sotnikova, Olga Molchanova, Konstantin Nikolaev, Liudmila Gapon, Elena Baranova, Zaur Shogenov, Elena Kosmachova, Yuriy Karpov, Anton Povzun, Liudmila Egorova, Vadim V. Tyrenko, Igor G. Ivanov, Masterov Ilya, Sergey Kanorsky, Dragan Simic, Nikola Ivanovic, Goran Davidovic, Nebojsa Tasic, Milika R. Asanin, Stevo Stojic, Svetlana R. Apostolovic, Stevan Ilic, Biljana Putnikovic Tosic, Aleksandar Stankovic, Aleksandra Arandjelovic, Slavica Radovanovic, Branislava Todic, Jovan Balinovac, Dragan V. Dincic, Petar Seferovic, Ana Karadzic, Slobodan Dodic, Sinisa Dimkovic, Tamara Jakimov, Kian-Keong Poh, Hean Yee Ong, Justin Tang I-Shing, Karol Micko, Jan Nociar, Daniel Pella, Peter Fulop, Marian Hranai, Juraj Palka, Juraj Mazur, Ivan Majercák, Andrej Dzupina, František Fazekas, Jozef Gonsorcik, Viliam Bugan, Juraj Selecky, Gabriel Kamensky, Jaroslava Strbova, Rudolf Smik, Andrej Dukat, Peter Olexa, Ivan Žuran, Janez Poklukar, Nataša Černič Šuligoj, Matija Cevc, Henry P. Cyster, Naresh Ranjith, Clive Corbett, Junaid Bayat, Ellen Makoali Makotoko, Hendrik du Toit Theron, Ilse E. Kapp, Matthys M. de V Basson, Hanlie Lottering, Dina Van Aswegen, Louis J. Van Zyl, Peter J. Sebastian, Thayabran Pillay, Jan A. Saaiman, Patrick J. Commerford, Soraya Cassimjee, Garda Riaz, Iftikhar O. Ebrahim, Mahomed Sarvan, Joseph H. Mynhardt, Helmuth Reuter, Rajendran Moodley, Manuel Vida, Angel R. Cequier Fillat, Vicente Bodí Peris, Francisco Fuentes Jimenez, Francisco Marín, Jose M. Cruz Fernández, Rafael Jesus Hidalgo Urbano, Blas Gil-Extremera, Pablo Toledo, Fernando Worner Diz, David Garcia-Dorado, Andres Iñiguez, José Tuñón Fernández, Jose R. Gonzalez-Juanatey, Javier Fernandez Portales, Fernando Civeira Murillo, Laia Matas Pericas, Jose Luis Zamorano, Manuel De Mora Martin, Jordi Bruguera Cortada, Joaquin J. Alonso Martin, Jose Maria Serrano Antolin, José R. De Berrazueta Fernández, José Antonio Vázquez de Prada, Jose Francisco Díaz Fernández, José Alberto García Lledó, Juan Cosín Sales, Javier Botas Rodriguez, Gabriel Gusi Tragant, Amparo Benedicto, Carlos Gonzalez-Juanatey, Mercedes Camprubí Potau, Ignacio Plaza Perez, César Morís De La Tassa, Pablo Loma-Osorio Rincon, Javier Balaguer Recena, Juan M. Escudier, Antonio Coca Payeras, Norberto Alonso Orcajo, Pedro Valdivielso, Godwin Constantine, Ruvaiz Haniffa, Nirmali Tissera, Stanley Amarasekera, Chandrike Ponnamperuma, Nimali Fernando, Kaputella Fernando, Jayanthimala Jayawardena, Santharaj Wijeyasingam, Gotabhaya Ranasinghe, Ruvan Ekanayaka, Sepalika Mendis, Vajira Senaratne, Gnanamoorthy Mayurathan, Ajantha Rajapaksha, Thilak Sirisena, Jagath I. Herath, Naomali Amarasena, Stefan Berglund, Gundars Rasmanis, Ola Vedin, Nils Witt, Georgios Mourtzinis, Peter Nicol, Ole Hansen, Stefano Romeo, Steen Agergaard Jensen, Ingemar Torstensson, Ulf Ahremark, Torbjörn Sundelin, Tiziano Moccetti, Francois Mach, Ronald Binde, Oliver Gämperli, Wei-Chuan Tsai, Kwo-Chang Ueng, Wen-Ter Lai, Ming-En Liu, Juey-Jen Hwang, Wei-Hsian Yin, I-Chang Hsieh, Ming-Jer Hsieh, Wei Hsiang Lin, Jen-Yuan Kuo, Tsuei-Yuan Huang, Chih-Yuan Fang, Pinij Kaewsuwanna, Wasant Soonfuang, Woravut Jintapakorn, Apichard Sukonthasarn, Nattawut Wongpraparut, Krisada Sastravaha, Nakarin Sansanayudh, Wirash Kehasukcharoen, Dilok Piyayotai, Paiboon Chotnoparatpat, Ahmet Camsari, Hakan Kultursay, Bulent Mutlu, Murat Ersanli, Mustafa Demirtas, Cevat Kirma, Ertan Ural, Lale Koldas, Oleksandr Karpenko, Alexander Prokhorov, Ihor Vakaluyk, Halyna Myshanych, Dmytro Reshotko, Valeriy Batushkin, Leonid Rudenko, Ihor Kovalskyi, Mykola Kushnir, Vira Tseluyko, Yuriy Mostovoy, Mykola Stanislavchuk, Yulian Kyiak, Yuriy Karpenko, Yaroslav Malynovsky, Andriy Klantsa, Oles Kutniy, Ekaterina Amosova, Viktor Tashchuk, Oleh Leshchuk, Mykola Rishko, Mykola Kopytsya, Andriy Yagensky, Mykola Vatutin, Andriy Bagriy, Olga M. Barna, Olexiy Ushakov, Georgiy Dzyak, Borys Goloborodko, Anatolii Rudenko, Volodymyr Zheleznyy, Jasper Trevelyan, Azfar Zaman, Kaeng Lee, Andrew Moriarty, Rajesh K. Aggarwal, Piers Clifford, Yuk-Ki Wong, Syed M.R. Iqbal, Eduardas Subkovas, Denise Braganza, David Sarkar, Robert Storey, Huw Griffiths, Sam Mcclure, Rangasamy Muthusamy, Simon Smith, John Kurian, Terry Levy, Craig Barr, Honer Kadr, Robert Gerber, Audrius Simaitis, Handrean Soran, Anthony Mathur, Adrian Brodison, Mohammad Ayaz, Muhammad Cheema, Richard Oliver, Simon Thackray, Telal Mudawi, Gohar Rahman, Ayyaz Sultan, Timothy Reynolds, David Sharman, null david Sprigings, Rob Butler, Peter Wilkinson, Gregory Y.H. Lip, Julian Halcox, Sean Gallagher, Nicholas Ossei-Gerning, Gil Vardi, Duccio Baldari, David Brabham, Charles Treasure, Charles Dahl, Bruce Palmer, Alan Wiseman, Abul Khan, Sanjeev Puri, Ann Elizabeth Mohart, Carlos Ince, Enrique Flores, Scott Wright, Shi-Chi Cheng, Michael Rosenberg, William Rogers, Edward Kosinski, Les Forgosh, Jonathan Waltman, Misal Khan, Mohammad Shoukfeh, Georges Dagher, Patrick Cambier, Ira Lieber, Priya Kumar, Cara East, Perry Krichmar, Mian Hasan, Lindsey White, Thomas Knickelbine, Thomas Haldis, Eve Gillespie, Thomas Amidon, David Suh, Imran Arif, Mouhamad Abdallah, Faiq Akhter, Eric Carlson, Michael D'Urso, Fadi El-Ahdab, William Nelson, Katie Moriarty, Barry Harris, Steven Cohen, Luther Carter, Daniel Doty, Kenneth Sabatino, Tariq Haddad, Amir Malik, Sunder Rao, Angel Mulkay, Ion Jovin, Kim Klancke, Vinay Malhotra, Sai K. Devarapalli, Michael Koren, Harish Chandna, George Dodds, Tauqir Goraya, James Bengston, Matthew Janik, Joseph Moran, Andrew Sumner, John Kobayashi, William Davis, Shahram Yazdani, John Pasquini, Maitreya Thakkar, Amarnath Vedere, Wayne Leimbach, James Rider, Sarah fenton, Narendra Singh, Anil V. Shah, Denise Janosik, Carl Pepine, Brett Berman, Joseph Gelormini, Christopher Daniels, Kerensky Richard, Friederike Keating, Nicholas I. Kondo, Sanjay Shetty, Howard Levite, Winfried Waider, Theodore Takata, Mazen Abu-Fadel, Vipul Shah, Rahul Aggarwal, Mark Izzo, Anil Kumar, Brack Hattler, Rose Do, Chad Link, Anna Bortnick, George Kinzfogl, Arnold Ghitis, John Larry, Edward Teufel, Peter Kuhlman, Brent Mclaurin, Wenwu Zhang, Stephen Thew, Jalal Abbas, Matthew White, Othman Islam, Sumeet Subherwal, Nandkishore Ranadive, Babak Vakili, Christian Gring, David Henderson, Timothy Schuchard, Naim Farhat, Geoffrey Kline, Sharan Mahal, Jack Whitaker, Shawn Speirs, Rolf Andersen, Nizar Daboul, Phillip Horwitz, Firas Zahr, George Ponce, Zubair Jafar, Joseph Mcgarvey, Vipul Panchal, Stephen Voyce, Thomas Blok, William Sheldon, Masoud M. Azizad, Carsten Schmalfuss, Mark Picone, Robert Pederson, William Herzog, Keith Friedman, Jason Lindsey, Rosemary Nowins, Eichenlaub Timothy, Parilak Leonard, Norman Lepor, Mahfouz El Shahawy, Howard Weintraub, Anand Irimpen, Alvaro Alonso, Wade May, Daniels Christopher, Thomas Galski, Alan Chu, Freny Mody, Ebrahimi Ramin, Zachary Hodes, Joseph Rossi, Gregory Rose, James Fairlamb, Charles Lambert, Ajit Raisinghani, Antonio Abbate, George Vetrovec, Marilyn King, Charles Carey, Jaime Gerber, Liwa Younis, Hyeun Park, Mladen Vidovich, Thomas Knutson, Dennis Friedman, Fred Chaleff, Arthur Loussararian, Phillip Rozeman, Carey Kimmelstiel, Jeffrey Kuvin, Kevin Silver, Malcolm Foster, Glen Tonnessen, Andrey Espinoza, Mohamadali Amlani, Andreas Wali, Christopher Malozzi, Geert T. Jong, Clara Massey, Keattiyoat Wattanakit, Philip J. O'Donnell, Dinesh Singal, Naseem Jaffrani, Sridhar Banuru, Daniel Fisher, Mark Xenakis, Neal Perlmutter, Ravi Bhagwat, James Strader, Ronald Blonder, Ayim Akyea-Djamson, Ajay Labroo, Kwan Lee, H. John Marais, Edmund Claxton, Robert Weiss, Rohr Kathryn, Martin Berk, Peter Rossi, Parag Joshi, Amit Khera, Ajit S. Khaira, Greg Kumkumian, Steven Lupovitch, Joshua Purow, Stephen Welka, David Hoffman, Stuart Fischer, Eugene Soroka, Donald Eagerton, Samir Pancholy, Michael Ray, Norman Erenrich, Michael Farrar, Stewart Pollock, William J. French, Steve Diamantis, Douglas Guy, Lawrence Gimple, Mark Neustel, Steven Schwartz, Edward Pereira, Seals Albert, Douglas Spriggs, Janet Strain, Suneet Mittal, Anthony Vo, Majed Chane, Jason Hall, Nampalli Vijay, Kapildeo Lotun, F. Martin Lester, Ahed Nahhas, Theodore Pope, Paul Nager, Rakesh Vohra, Mukesh Sharma, Riyaz Bashir, Hinan Ahmed, Michael Berlowitz, Robert Fishberg, Robert Barrucco, Eric Yang, Michael Radin, Daniel Sporn, Dwight Stapleton, Steven Eisenberg, Joel Landzberg, Martin Mcgough, Samir Turk, Michael Schwartz, P. Sandy Sundram, Diwakar Jain, Mark Zainea, Carlos Bayron, Ronald Karlsberg, Suhail Dohad, Henry Lui, William Keen, Donald Westerhausen, Sandeep Khurana, Himanshu Agarwal, Jessica Birchem, William Penny, Mark Chang, Sherrill Murphy, John Henry, Branislav Schifferdecker, John M Gilbert, Gopal Chalavarya, Charles Eaton, John F. Schmedtje, Stuart Christenson, Imran Dotani, Douglas Denham, Alexander Macdonell, Paul Gibson, Aref Rahman, Tammam Al Joundi, Nizar Assi, Gary Conrad, Purushotham Kotha, Michael Love, Gregory Giesler, Howard Rubenstein, Dawood Gamil, Laura Akright, Justine Krawczyk, Joanne Cobler, Terry Wells, James Welker, Robert Foster, Richard Gilmore, Jay Anderson, Douglas Jacoby, Bill Harris, Geraldine Gardner, Ramprasad Dandillaya, Kishor Vora, John Kostis, John Hunter, David Laxson, Eric Ball, Flavia Egydio, Anelise Kawakami, Janaina Oliveira, Julianna Wozniak, Alexander Matthews, Caroline Ratky, Janine Valiris, Lisa Berdan, Anita Hepditch, Kirby Quintero, Tyrus Rorick, Melissa Westbrook, Andrea Pascual, Carla Rovito, Madeleine Bezault, Elodie Drouet, Tabassome Simon, Caroline Alsweiler, Anne Luyten, Julie Butters, Liddy Griffith, Michelle Shaw, Lena Grunberg, Shahidul Islam, Marie-France Brégeault, Nathalie Bougon, Douglas Faustino, Sylvie Fontecave, Judith Murphy, Melanie Verrier, null Veronique Agnetti, Dorthe Andersen, Emmy Badreddine, Mhamed Bekkouche, Cecile Bouancheau, Imane Brigui, Maddy Brocklehurst, Joseph Cianciarulo, Dawn Devaul, Szilvia Domokos, Cecile Gache, Caroline Gobillot, Severine Guillou, Jan Healy, Megan Heath, Gayatri Jaiwal, Carine Javierre, Julien Labeirie, Myriam Monier, Ulises Morales, Asmaa Mrabti, Bicky Mthombeni, Betim Okan, Lucile Smith, Jennifer Sheller, Sebastien Sopena, Valerie Pellan, Fadela Benbernou, Nafissa Bengrait, Maud Lamoureux, Katarina Kralova, Raphael Bejuit, Anthony Coulange, Christelle Berthou, Jérôme Repincay, Christelle Lorenzato, Alexis Etienne, Valerie Gouet, Virginie Loizeau, Mickael Normand, Anne Ourliac, Christelle Rondel, Antony Adamo, Pascale Beltran, Pauline Barraud, Helene Dubois-Gache, Benjamin Halle, Lamia Metwally, Maxime Mourgues, Marc Sotty, Marion Vincendet, Raluca Cotruta, Zhu Chengyue, Dominique Fournie-Lloret, Christine Morrello, Aurelie Perthuis, Patrick Picault, Isabelle Zobouyan, Helen M. Colhoun, Michael A. Dempsey, Mark A. McClanahan, Masira, and Laucevičius, Aleksandras

Subjects
Male, Acute coronary syndrome, medicine.medical_specialty, Cardiac & Cardiovascular Systems, Randomization, PCSK9 inhibitor, LOW-DENSITY-LIPOPROTEIN, Antibodies, Monoclonal, Humanized, acute coronary syndrom, Placebo, Gastroenterology, lipoprotein(a), Internal medicine, medicine, Humans, Low-density lipoprotein cholesterol, Aged, Alirocumab, RISK, low-density lipoprotein cholesterol, Science & Technology, biology, business.industry, PCSK9, PCSK9 Inhibitors, Hazard ratio, ALIROCUMAB, acute coronary syndrome, Cholesterol, LDL, Lipoprotein(a), Middle Aged, EFFICACY, medicine.disease, Cardiovascular Diseases, CARDIOVASCULAR-DISEASE, SAFETY, Cardiovascular System & Cardiology, biology.protein, Female, lipids (amino acids, peptides, and proteins), STATIN, low-density lipoprotein, cholesterol PCSK9 inhibitor, CORONARY, Cardiology and Cardiovascular Medicine, business, Life Sciences & Biomedicine, Mace
Abstract

Digital, Background Guidelines recommend nonstatin lipid-lowering agents in patients at very high risk for major adverse cardiovascular events (MACE) if low-density lipoprotein cholesterol (LDL-C) remains ≥70 mg/dL on maximum tolerated statin treatment. It is uncertain if this approach benefits patients with LDL-C near 70 mg/dL. Lipoprotein(a) levels may influence residual risk. Objectives In a post hoc analysis of the ODYSSEY Outcomes (Evaluation of Cardiovascular Outcomes After an Acute Coronary Syndrome During Treatment With Alirocumab) trial, the authors evaluated the benefit of adding the proprotein subtilisin/kexin type 9 inhibitor alirocumab to optimized statin treatment in patients with LDL-C levels near 70 mg/dL. Effects were evaluated according to concurrent lipoprotein(a) levels. Methods ODYSSEY Outcomes compared alirocumab with placebo in 18,924 patients with recent acute coronary syndromes receiving optimized statin treatment. In 4,351 patients (23.0%), screening or randomization LDL-C was 13.7 mg/dL or ≤13.7 mg/dL; corresponding adjusted treatment hazard ratios were 0.82 (95% CI: 0.72-0.92) and 0.89 (95% CI: 0.75-1.06), with Pinteraction = 0.43. Conclusions In patients with recent acute coronary syndromes and LDL-C near 70 mg/dL on optimized statin therapy, proprotein subtilisin/kexin type 9 inhibition provides incremental clinical benefit only when lipoprotein(a) concentration is at least mildly elevated. (ODYSSEY Outcomes: Evaluation of Cardiovascular Outcomes After an Acute Coronary Syndrome During Treatment With Alirocumab; NCT01663402), Ciencias Médicas y de la Salud

Published
2021
Full Text
View/download PDF

7. A recombinant selective drug-resistant M. bovis BCG enhances the bactericidal activity of a second-line anti-tuberculosis regimen

Author

Yaoju Tan, Ping Guan, Nanshan Zhong, Jinxing Hu, Julius Mugweru, Gift Chiwala, Tianyu Zhang, Jianxiong Liu, Petuel Ndip Ndip Bate, Buhari Yusuf, Shouyong Tan, Bangxing Wang, H.M. Adnan Hameed, Shahzad Akbar Khan, Cuiting Fang, and Zhiyong Liu

Subjects
Tuberculosis, medicine.medical_treatment, Recombinant drug-resistant BCG, Ag85B, Antitubercular Agents, RM1-950, Drug resistance, Levofloxacin, Mice, SCID, Immune system, In vivo, Drug Resistance, Bacterial, Medicine, Animals, Amikacin, Tuberculosis, Pulmonary, Pharmacology, Chemotherapy, Antigens, Bacterial, Mice, Inbred BALB C, Vaccines, Synthetic, Drug-resistant tuberculosis, biology, Virulence, business.industry, General Medicine, Mycobacterium tuberculosis, Therapeutic vaccine, Rv2628, medicine.disease, Mycobacterium bovis, Pyrazinamide, Vaccination, Regimen, Disease Models, Animal, Immunology, Prothionamide, biology.protein, BCG Vaccine, Therapeutics. Pharmacology, Antibody, business, Plasmids
Abstract

Drug-resistant tuberculosis (DR-TB) poses a new threat to global health; to improve the treatment outcome, therapeutic vaccines are considered the best chemotherapy adjuvants. Unfortunately, there is no therapeutic vaccine approved against DR-TB. Our study assessed the therapeutic efficacy of a recombinant drug-resistant BCG (RdrBCG) vaccine in DR-TB. We constructed the RdrBCG overexpressing Ag85B and Rv2628 by selecting drug-resistant BCG strains and transformed them with plasmid pEBCG or pIBCG to create RdrBCG-E and RdrBCG-I respectively. Following successful stability testing, we tested the vaccine’s safety in severe combined immune deficient (SCID) mice that lack both T and B lymphocytes plus immunoglobulins. Finally, we evaluated the RdrBCG’s therapeutic efficacy in BALB/c mice infected with rifampin-resistant M. tuberculosis and treated with a second-line anti-TB regimen. We obtained M. bovis strains which were resistant to several second-line drugs and M. tuberculosis resistant to rifampin. Notably, the exogenously inserted genes were lost in RdrBCG-E but remained stable in the RdrBCG-I both in vitro and in vivo. When administered adjunct to a second-line anti-TB regimen in a murine model of DR-TB, the RdrBCG-I lowered lung M. tuberculosis burden by 1 log10. Furthermore, vaccination with RdrBCG-I adjunct to chemotherapy minimized lung tissue pathology in mice. Most importantly, the RdrBCG-I showed almost the same virulence as its parent BCG Tice strain in SCID mice. Our findings suggested that the RdrBCG-I was stable, safe and effective as a therapeutic vaccine. Hence, the “recombinant” plus “drug-resistant” BCG strategy could be a useful concept for developing therapeutic vaccines against DR-TB.

Published
2021

8. A recombinant selective drug-resistant M. bovis BCG enhances the bactericidal activity of a second-line tuberculosis regimen

Author

Ping Guan, Julius Mugweru, Buhari Yusuf, Nanshan Zhong, Jinxing Hu, Zhiyong Liu, Yaoju Tan, Tianyu Zhang, Petuel Ndip Ndip Bate, Jianxiong Liu, Shouyong Tan, Gift Chiwala, Shahzad Akbar Khan, H.M. Adnan Hameed, Cuiting Fang, and Bangxing Wang

Subjects
Tuberculosis, biology, business.industry, Isoniazid, Drug resistance, biology.organism_classification, medicine.disease, Chemotherapy regimen, Mycobacterium tuberculosis, Vaccination, Regimen, Immunology, Medicine, business, Pathogen, medicine.drug
Abstract

Drug-resistant tuberculosis (DR-TB) results from infection by Mycobacterium tuberculosis strains resistant to at least rifampin or isoniazid. To improve the treatment outcome in DR-TB, therapeutic vaccines are considered an ideal choice as they can enhance pathogen clearance and minimize disease sequelae. To date, there is no therapeutic vaccine reported to be effective when combined with a chemotherapy regimen against DR-TB. The only available TB vaccine, the M. bovis BCG (BCG) is susceptible to several anti-TB drugs hence not a perfect option for therapeutic vaccination. Herein, we developed a recombinant BCG (RdrBCG) overexpressing Ag85B and Rv2628 with resistance to selected anti-TB drugs. When administered three times adjunct to a second-line anti-TB regimen in a classical murine model of DR-TB, the RdrBCG lowered lung M. tuberculosis colony-forming units by 1 log10. Furthermore, vaccination with the RdrBCG adjunct to TB chemotherapy minimized lung tissue pathology in mice. Most importantly, the RdrBCG maintained the exogenously inserted genes and showed almost the same virulence as its parent BCG Tice strain in severe combined immune-deficient mice. All these suggested that the RdrBCG was stable, safe and effective. Hence, the “recombinant” plus “drug-resistant” BCG strategy could be a useful concept for developing therapeutic vaccines against DR-TB.

Published
2021
Full Text
View/download PDF

9. Design, synthesis, andin vitrobiological evaluation of novel benzimidazole tethered allylidenehydrazinylmethylthiazole derivatives as potent inhibitors ofMycobacterium tuberculosis

Author

Goverdhan Surineni, Yamin Gao, Mahmudul Islam, Zhiyong Liu, Chiranjibi Chhotaray, Tianyu Zhang, H.M. Adnan Hameed, Muzammal Hussain, and Zhili Lu

Subjects
Pharmacology, Benzimidazole, Tuberculosis, biology, 010405 organic chemistry, Organic Chemistry, Pharmaceutical Science, Biological activity, medicine.disease, biology.organism_classification, Condensation reaction, 01 natural sciences, Biochemistry, Combinatorial chemistry, In vitro, 0104 chemical sciences, Mycobacterium tuberculosis, 010404 medicinal & biomolecular chemistry, chemistry.chemical_compound, chemistry, Drug Discovery, medicine, Molecular Medicine, Cytotoxicity, Biological evaluation
Abstract

Tuberculosis (TB) has become one of the most significant public health problems in recent years. Antibiotic therapy remains the mainstay of TB control strategies, but the increasing resistance of mycobacterial species has heightened alarm, requiring the development of novel drugs in order to improve treatment outcomes. Here, as an effort to identify novel and effective antitubercular agents, we designed and synthesized a series of novel substituted benzimidazolallylidenehydrazinylmethylthiazole derivatives via a multi-component molecular hybridization approach with single molecular architecture. Our design strategy involved assembling the antitubercular pharmacophoric fragments benzimidazole, 2-aminothiazole and substituted α,β-unsaturated ketones via condensation reactions. All the newly synthesized compounds were fully characterized via NMR and mass spectral data and evaluated for in vitro biological activity against the H37Ra strain of Mycobacterium tuberculosis. From the biological evaluation data, we identified some effective compounds, of which 8g and 7e were the most active ones (both having MIC values of 2.5 μg mL-1). In addition, compound 8g exhibited a lower cytotoxicity profile. We conceive that compound 8g may serve as a chemical probe of interest for further lead optimization studies with the general aim of developing novel and effective antitubercular agents.

Published
2019
Full Text
View/download PDF

10. Assessment of Clofazimine and TB47 Combination Activity against Mycobacterium abscessus Using a Bioluminescent Approach

Author

Xingshan Cai, Yuanyuan Cao, Yaoju Tan, Peipei Zhou, Shuai Wang, H.M. Adnan Hameed, Sheng Zeng, Yang Liu, Tianyu Zhang, Jianxiong Liu, Xiaoyun Lu, Guoliang Zhang, Eric L. Nuermberger, Huancai Yin, Mahmudul Islam, and Julius Mugweru

Subjects
Drug, Luminescence, media_common.quotation_subject, Mycobacterium Infections, Nontuberculous, Microbial Sensitivity Tests, Pharmacology, Mycobacterium abscessus, Clofazimine, Electron Transport, Recombinases, Electron Transport Complex III, Mice, 03 medical and health sciences, Bacterial Proteins, In vivo, Clarithromycin, Drug Resistance, Multiple, Bacterial, medicine, Animals, Experimental Therapeutics, Pharmacology (medical), Enzyme Inhibitors, Amikacin, 030304 developmental biology, media_common, Mice, Inbred BALB C, Roxithromycin, 0303 health sciences, biology, 030306 microbiology, business.industry, Optical Imaging, Drug Synergism, bacterial infections and mycoses, Antimicrobial, biology.organism_classification, Anti-Bacterial Agents, Drug Combinations, Infectious Diseases, Female, Genetic Engineering, business, medicine.drug
Abstract

Mycobacterium abscessus is intrinsically resistant to most antimicrobial agents. The emerging infections caused by M. abscessus and the lack of effective treatment call for rapid attention. Here, we intended to construct a selectable marker-free autoluminescent M. abscessus strain (designated UAlMab) as a real-time reporter strain to facilitate the discovery of effective drugs and regimens for treating M. abscessus. The UAlMab strain was constructed using the dif/Xer recombinase system. In vitro and in vivo activities of several drugs, including clofazimine and TB47, a recently reported cytochrome bc(1) inhibitor, were assessed using UAlMab. Furthermore, the efficacy of multiple drug combinations, including the clofazimine and TB47 combination, were tested against 20 clinical M. abscessus isolates. The UAlMab strain enabled us to evaluate drug efficacy both in vitro and in live BALB/c mice in a real-time, noninvasive fashion. Importantly, although TB47 showed marginal activity either alone or in combination with clarithromycin, amikacin, or roxithromycin, the drug markedly potentiated the activity of clofazimine, both in vitro and in vivo. This study demonstrates that the use of the UAlMab strain can significantly facilitate rapid evaluation of new drugs and regimens. The clofazimine and TB47 combination is effective against M. abscessus, and dual/triple electron transport chain (ETC) targeting can be an effective therapeutic approach for treating mycobacterial infections.

Published
2020
Full Text
View/download PDF

11. Prevalence and molecular characterization of amikacin resistance among Mycobacterium tuberculosis clinical isolates from southern China

Author

Zhili Lu, Chiranjibi Chhotaray, Tianyu Zhang, Shuai Wang, Xinjie Li, Jianxiong Liu, H.M. Adnan Hameed, Biyi Su, Mahmudul Islam, Xiaoyin Cai, Yaoju Tan, Yang Liu, Shouyong Tan, Xingshan Cai, and Zhiyong Liu

Subjects
0301 basic medicine, Microbiology (medical), China, Tuberculosis, Resistance, 030106 microbiology, Immunology, Injectable drug, Microbial Sensitivity Tests, Gene mutation, medicine.disease_cause, Microbiology, Mycobacterium tuberculosis, 03 medical and health sciences, 0302 clinical medicine, Kanamycin, Drug Resistance, Multiple, Bacterial, Prevalence, Immunology and Allergy, Medicine, Humans, 030212 general & internal medicine, Capreomycin, Gene, Amikacin, Mutation, biology, business.industry, Incidence (epidemiology), bacterial infections and mycoses, biology.organism_classification, medicine.disease, QR1-502, carbohydrates (lipids), Regimen, Susceptibility testing, business, medicine.drug
Abstract

Objectives Amikacin is the only second-line injectable antituberculosis (anti-TB) drug still recommended for multidrug-resistant tuberculosis (MDR-TB) treatment when a short MDR-TB regimen is designed. Mutations in rrs and eis are reported to be associated with resistance to amikacin. In this study, we investigated the incidence of rrs, eis, tap and whiB7 mutations in amikacin-resistant Mycobacterium tuberculosis clinical isolates to find the proportion of different mutations related to amikacin resistance. Methods A total of 395 clinical isolates of M. tuberculosis were used for phenotypic drug susceptibility testing (DST) to 10 drugs with the Lowenstein–Jensen (L–J) method. We sequenced rrs, eis, tap and whiB7 genes in 178 M. tuberculosis clinical isolates (89 amikacin-resistant isolates and 89 of 306 amikacin-susceptible isolates). Results Our data showed that 22.53% (89/395) M. tuberculosis clinical isolates were resistant to amikacin. Of the 89 amikacin-resistant isolates, 89.89% (80/89) were MDR-TB, of which 12.36% (11/89) were pre-extensively drug-resistant TB (pre–XDR-TB) and 77.53% (69/89) were XDR-TB. The rrs mutations were found in 82% (73/89) in amikacin-resistant M. tuberculosis clinical isolates. The A1401G alteration in the rrs gene was the most dominant mutation (80.90%; 72/89). Five mutations were detected as new in rrs, tap and whiB7. Notably, 13.48% (12/89) amikacin-resistant isolates had no known mutation in these genes. Conclusions Our data reveal that the rrs mutation is a predominant molecular marker of amikacin resistance in southern China. Analysis of the rrs gene mutations will significantly reduce the time and cost to diagnose amikacin resistance in TB patients. Other unknown amikacin resistance mechanism(s) exist.

Published
2019

12. Biometric indices and size at first sexual maturity of eight alien fish species from Bangladesh

Author

Sabitry Bardoloi, Md. Mahmudul Islam, Md. Alomgir Hossen, Fairuz Nawer, Alok Kumar Paul, Md. Mosaddequr Rahman, Gitartha Kaushik, H.M. Adnan Hameed, Md. Nasir Uddin Pramanik, and Md. Yeamin Hossain

Subjects
0106 biological sciences, Clarias gariepinus, Veterinary medicine, Biometric index, Fishing, Alien species, Aquatic Science, Oceanography, 01 natural sciences, lcsh:Aquaculture. Fisheries. Angling, Cyprinus, Sexual maturity, Condition- and form- factor, lcsh:Environmental sciences, Ecology, Evolution, Behavior and Systematics, Hypophthalmus, Water Science and Technology, lcsh:SH1-691, lcsh:GE1-350, Bangladesh, Hypophthalmichthys, biology, 010604 marine biology & hydrobiology, 04 agricultural and veterinary sciences, biology.organism_classification, Fishery, Oreochromis, 040102 fisheries, 0401 agriculture, forestry, and fisheries, Allometry
Abstract

The biometric indices and size at first sexual maturity of eight alien fish species from several water bodies in Bangladesh were studied for the first time. A total of 273 individuals of eight alien fish species ( Barbonymus gonionotus , Clarias gariepinus , Ctenopharyngodon idella , Cyprinus carpio , Hypophthalmichthys molitrix , H. nobilis , Oreochromis niloticus and Pangasianodon hypophthalmus ) were collected using traditional fishing gears from June 2014 to May 2015. Among the four condition factors (Allometric condition factor, Fulton’s condition factor, Relative condition factor, and Relative weight) studied, Fulton’s condition factor was the best for assessing the well-being of these alien species in their natural habitat, based on the relationships of condition factors with body weight and total length. The calculated form factor was 0.0270 for B. gonionotus , 0.0077 for C. gariepinus , 0.0119 for C. idella , 0.0194 for C. carpio , 0.0101 for H. molitrix , 0.0092 for H. nobilis , 0.0158 for O. niloticus and 0.0105 for P. hypophthalmus . The size at first sexual maturity was estimated in TL as 12.30 cm for B. gonionotus , 25.53 cm for C. gariepinus , 32.80 cm for C. idella , 18.22 cm for C. carpio , 23.92 cm for H. molitrix , 30.18 cm for H. nobilis , 21.78 cm for O. niloticus , and 21.32 cm for P. hypophthalmus . The present study also calculates form factor and first sexual maturity of these alien species from different water-bodies world over. The findings of this study can be very helpful for sustainable management of these alien species in Bangladesh and similar ecosystems.

Published
2016
Full Text
View/download PDF

13. Rapid, serial, non-invasive quantification of Pseudomonas aeruginosa in live mice with a selectable marker-free autoluminescent strain

Author

Jianxiong Liu, Yaoju Tan, Wei Yu, Lingmin Guo, Zhizhong Cao, Nanshan Zhong, Shuai Wang, Ping Guan, Jinxing Hu, Mahmudul Islam, Tianyu Zhang, Xiaoyin Cai, Jingran Zhang, H.M. Adnan Hameed, Xirong Tian, Sanjeep Sapkota, Gao Yamin, Sheng Zeng, Zhiyong Liu, Shahzad Akbar Khan, Cuiting Fang, and Zafran Khan

Subjects
medicine.drug_class, Antibiotics, Biomedical Engineering, Biophysics, Biosensing Techniques, Microbial Sensitivity Tests, 02 engineering and technology, Biology, medicine.disease_cause, 01 natural sciences, Microbiology, Mice, Levofloxacin, In vivo, Electrochemistry, medicine, Animals, Pseudomonas Infections, Biapenem, Selectable marker, Polymyxin B, Pseudomonas aeruginosa, 010401 analytical chemistry, General Medicine, 021001 nanoscience & nanotechnology, Anti-Bacterial Agents, 0104 chemical sciences, Amikacin, 0210 nano-technology, Biotechnology, medicine.drug
Abstract

Pseudomonas aeruginosa is an increasingly prevalent pathogen that has become a serious health concern due to an increasing incidence of multidrug-resistant (MDR) hospital-acquired infections. The emergence of MDR-P. aeruginosa coupled with shrinking antibiotic pipelines has increased the demand for new antimicrobials and therapeutics. An effective tool for drug screening both in vitro and in vivo can facilitate the discovery of drugs and regimens for treating P. aeruginosa infection. Here, for the first time, we combined the mini-Tn7 system and Xer/dif recombinase system to construct a stable and selectable marker-free autoluminescent P. aeruginosa (SfAlPa) by one step. Afterwards, in vitro and in vivo activities of several antibiotics including amikacin, biapenem, levofloxacin and polymyxin B were assessed using SfAlPa. This study demonstrated that the use of SfAlPa could significantly facilitate rapid real-time evaluating the activities of compounds. Compared to prevailing methods, this method reduces the time, effort, animals and costs consumed in the discovery of new drugs against P. aeruginosa. Additionally, the methodology described in this study could be easily modified for construction of selectable marker-free reporter strain in other Gram-negative bacteria.

Published
2020
Full Text
View/download PDF

14. The compound TB47 is highly bactericidal against Mycobacterium ulcerans in a Buruli ulcer mouse model

Author

Huofeng Jiang, Yang Liu, Tianyu Zhang, Jianxiong Liu, Zhiyong Liu, Gift Chiwala, Shouyong Tan, Yamin Gao, Gaëlle Guiewi Makafe, Shuai Wang, Mahmudul Islam, Yaoju Tan, Xingshan Cai, Zhili Lu, Chiranjibi Chhotaray, H.M. Adnan Hameed, Xinjie Li, and Changwei Wang

Subjects
0301 basic medicine, Buruli ulcer, Tuberculosis, Science, General Physics and Astronomy, 02 engineering and technology, Biology, medicine.disease_cause, Article, General Biochemistry, Genetics and Molecular Biology, Microbiology, Electron Transport Complex III, Mice, 03 medical and health sciences, chemistry.chemical_compound, In vivo, Immunopathology, medicine, Animals, lcsh:Science, Mycolactone, Buruli Ulcer, Multidisciplinary, Mycobacterium ulcerans, Toxin, General Chemistry, 021001 nanoscience & nanotechnology, medicine.disease, biology.organism_classification, In vitro, Anti-Bacterial Agents, 030104 developmental biology, chemistry, Mutation, lcsh:Q, 0210 nano-technology
Abstract

Buruli ulcer (BU) is an emerging infectious disease that causes disfiguring skin ulcers. The causative agent, Mycobacterium ulcerans, secretes toxin called mycolactone that triggers inflammation and immunopathology. Existing treatments are lengthy and consist of drugs developed for tuberculosis. Here, we report that a pyrazolo[1,5-a]pyridine-3-carboxamide, TB47, is highly bactericidal against M. ulcerans both in vitro and in vivo. In the validated mouse model of BU, TB47 alone reduces M. ulcerans burden in mouse footpads by more than 2.5 log10 CFU compared to the standard BU treatment regimen recommended by the WHO. We show that mutations of ubiquinol-cytochrome C reductase cytochrome subunit B confer resistance to TB47 and the dissimilarity of CydABs from different mycobacteria may account for their differences in susceptibility to TB47. TB47 is highly potent against M. ulcerans and possesses desirable pharmacological attributes and low toxicity that warrant further assessment of this agent for treatment of BU., Combination therapy for Buruli ulcer (BU) is suboptimal. Here, Liu et al. show that the candidate drug TB47 has potent bactericidal activity against Mycobacterium ulcerans in vitro and in a mouse model, which underscores its potential for shortening the course of BU and treating other mycobacterial diseases.

Published
2019
Full Text
View/download PDF

15. Advances in the development of molecular genetic tools for Mycobacterium tuberculosis

Author

Tianyu Zhang, Jianxiong Liu, Julius Mugweru, Chiranjibi Chhotaray, Zhili Lu, Yaoju Tan, Mahmudul Islam, Xinjie Li, Changwei Wang, Shouyong Tan, Shuai Wang, and H.M. Adnan Hameed

Subjects
0301 basic medicine, Mycobacterium tuberculosis, 03 medical and health sciences, biology, 030106 microbiology, Genetics, Computational biology, Target gene, biology.organism_classification, Molecular Biology, Recombineering
Abstract

Mycobacterium tuberculosis, a clinically relevant Gram-positive bacterium of great clinical relevance, is a lethal pathogen owing to its complex physiological characteristics and development of drug resistance. Several molecular genetic tools have been developed in the past few decades to study this microorganism. These tools have been instrumental in understanding how M. tuberculosis became a successful pathogen. Advanced molecular genetic tools have played a significant role in exploring the complex pathways involved in M. tuberculosis pathogenesis. Here, we review various molecular genetic tools used in the study of M. tuberculosis. Further, we discuss the applications of clustered regularly interspaced short palindromic repeat interference (CRISPRi), a novel technology recently applied in M. tuberculosis research to study target gene functions. Finally, prospective outcomes of the applications of molecular techniques in the field of M. tuberculosis genetic research are also discussed.

Published
2018

16. Molecular Targets Related Drug Resistance Mechanisms in MDR-, XDR-, and TDR-Mycobacterium tuberculosis Strains

Author

Mahmudul Islam, Yaoju Tan, Vincent Delorme, Jianxiong Liu, Shouyong Tan, Tianyu Zhang, Yang Liu, Chiranjibi Chhotaray, Wing Wai Yew, H.M. Adnan Hameed, Changwei Wang, and Xinjie Li

Subjects
0301 basic medicine, Drug, Microbiology (medical), Tuberculosis, Extensively Drug-Resistant Tuberculosis, media_common.quotation_subject, 030106 microbiology, Immunology, Antitubercular Agents, lcsh:QR1-502, Review, Microbial Sensitivity Tests, Drug resistance, comorbidities, Microbiology, lcsh:Microbiology, Mycobacterium tuberculosis, 03 medical and health sciences, Drug Resistance, Multiple, Bacterial, drug targets, medicine, Global health, Humans, molecular, media_common, Whole genome sequencing, drug resistance, biology, medicine.disease, biology.organism_classification, Virology, therapeutic, Infectious Diseases, Infectious disease (medical specialty), Molecular targets, Genome, Bacterial
Abstract

Tuberculosis (TB) is a formidable infectious disease that remains a major cause of death worldwide today. Escalating application of genomic techniques has expedited the identification of increasing number of mutations associated with drug resistance in Mycobacterium tuberculosis. Unfortunately the prevalence of bacillary resistance becomes alarming in many parts of the world, with the daunting scenarios of multidrug-resistant tuberculosis (MDR-TB), extensively drug-resistant tuberculosis (XDR-TB) and total drug-resistant tuberculosis (TDR-TB), due to number of resistance pathways, alongside some apparently obscure ones. Recent advances in the understanding of the molecular/ genetic basis of drug targets and drug resistance mechanisms have been steadily made. Intriguing findings through whole genome sequencing and other molecular approaches facilitate the further understanding of biology and pathology of M. tuberculosis for the development of new therapeutics to meet the immense challenge of global health.

Published
2018
Full Text
View/download PDF

17. Pyrazinoic Acid Inhibits a Bifunctional Enzyme in Mycobacterium tuberculosis

Author

Gyanu Lamichhane, Shouyong Tan, Jinsong Liu, Yaoju Tan, Julius Mugweru, Xingshan Cai, Yanwen Liu, Na Wang, Bangxing Wang, Jintao Guo, Wing Wai Yew, H.M. Adnan Hameed, Eric L. Nuermberger, Moses Njire, Tianyu Zhang, and Jianxiong Liu

Subjects
0301 basic medicine, Tuberculosis, Stringent response, 030106 microbiology, Mutant, Antitubercular Agents, DNA, Single-Stranded, Microbial Sensitivity Tests, Microbiology, Mycobacterium tuberculosis, 03 medical and health sciences, chemistry.chemical_compound, Pyrazinoic acid, Mechanisms of Resistance, Drug Resistance, Bacterial, medicine, Pharmacology (medical), Pyrophosphatases, Chromatography, High Pressure Liquid, Pharmacology, biology, Chemistry, Prodrug, Pyrazinamide, biology.organism_classification, medicine.disease, 030104 developmental biology, Infectious Diseases, Bacteria, medicine.drug
Abstract

Pyrazinamide (PZA), an indispensable component of modern tuberculosis treatment, acts as a key sterilizing drug. While the mechanism of activation of this prodrug into pyrazinoic acid (POA) by Mycobacterium tuberculosis has been extensively studied, not all molecular determinants that confer resistance to this mysterious drug have been identified. Here, we report how a new PZA resistance determinant, the Asp67Asn substitution in Rv2783, confers M. tuberculosis resistance to PZA. Expression of the mutant allele but not the wild-type allele in M. tuberculosis recapitulates the PZA resistance observed in clinical isolates. In addition to catalyzing the metabolism of RNA and single-stranded DNA, Rv2783 also metabolized ppGpp, an important signal transducer involved in the stringent response in bacteria. All catalytic activities of the wild-type Rv2783 but not the mutant were significantly inhibited by POA. These results, which indicate that Rv2783 is a target of PZA, provide new insight into the molecular mechanism of the sterilizing activity of this drug and a basis for improving the molecular diagnosis of PZA resistance and developing evolved PZA derivatives to enhance its antituberculosis activity.

Published
2017

18. Drug resistance mechanisms and novel drug targets for tuberculosis therapy

Author

Yaoju Tan, Tianyu Zhang, Eric L. Nuermberger, H.M. Adnan Hameed, Shouyong Tan, Xinjie Li, Julius Mugweru, Wing Wai Yew, Iwao Ojima, Gyanu Lamichhane, Mahmudul Islam, Changwei Wang, Chiranjibi Chhotaray, and Jianxiong Liu

Subjects
0301 basic medicine, Drug, Tuberculosis, media_common.quotation_subject, 030106 microbiology, Drug target, Antitubercular Agents, Drug resistance, Pharmacology, Gene mutation, Bioinformatics, Mycobacterium tuberculosis, 03 medical and health sciences, Drug Resistance, Bacterial, Genetics, medicine, Animals, Humans, Molecular Targeted Therapy, Molecular Biology, media_common, biology, Mechanism (biology), Genomics, biology.organism_classification, medicine.disease
Abstract

Drug-resistant tuberculosis (TB) poses a significant challenge to the successful treatment and control of TB worldwide. Resistance to anti-TB drugs has existed since the beginning of the chemotherapy era. New insights into the resistant mechanisms of anti-TB drugs have been provided. Better understanding of drug resistance mechanisms helps in the development of new tools for the rapid diagnosis of drug-resistant TB. There is also a pressing need in the development of new drugs with novel targets to improve the current treatment of TB and to prevent the emergence of drug resistance in Mycobacterium tuberculosis. This review summarizes the anti-TB drug resistance mechanisms, furnishes some possible novel drug targets in the development of new agents for TB therapy and discusses the usefulness using known targets to develop new anti-TB drugs. Whole genome sequencing is currently an advanced technology to uncover drug resistance mechanisms in M. tuberculosis. However, further research is required to unravel the significance of some newly discovered gene mutations in their contribution to drug resistance.

Published
2016

19. Antimicrobial Activity of Bacteriocins Isolated from Lactic Acid Bacteria Against Resistant Pathogenic Strains

Author

Hafiz Muhammad Adnan Hameed, Muhammad Arshad, Ghulam Muhammad, Muhammad Ashraf, Muhammad Awais Zahid, and Aqeela Yasmin

Subjects
food.ingredient, biology, food and beverages, Pathogenic bacteria, Antimicrobial, medicine.disease_cause, biology.organism_classification, Lactic acid, Microbiology, chemistry.chemical_compound, food, Bacteriocin, chemistry, Staphylococcus aureus, medicine, bacteria, Agar, Food science, Antibacterial activity, Bacteria
Abstract

This study was carried out to treat the microbial diseases in natural way and reduced the antibiotic resistance pressure. Five species of Lactic acid bacteria namely, L. acidophilus, L. bulgaricus, L. dulbrueckii L. plantarum, and L. fermentum, were isolated from locally produced yogurt. Bacteriocins were isolated from MRS broth culture of theses Lactic acid bacteria through the ammonium sulphate precipitation method. Extracted bacteriocins were tested against test strain i.e E.coli ATCC 25922 to obtain optimum pH, storage temperature and heating temperature for maximum antibacterial activity. For this (2-12) pH range, storage temperatures (-20 °C, 4 °C and 37 °C for 1 month) and heating temperatures (60 °C, 100 °C and 121 °C for 15 minutes) were tested. Later the antibacterial activity of these bacteriocins were tested at concluded optimum conditions against each other as well as against different locally isolated pathogens viz. Methicillin-Resistant-Staphylococcus-aureus, E.coli, Salmonella and Staphylococcus aureus by using well diffusion agar method. It was found that bacteriocins activities were maximum at pH 6 and 4 °C storage temperature. Maximum activity was found after heating bacteriocins at 60 °C as compared to 100 °C and 121 °C. Bacteriocins of lactobacilli were harmless against each other at any pH, heat temperatures and storage temperatures. Antibacterial activity of bacteriocins extracted from L.acidophilus showed maximum activity against pathogenic bacteria as compare to others. The present study has highlighted the antibacterial role of bacteriocins isolated from Lactic acid bacteria by indicating their potential to treat a variety of human and animal diseases.

Published
2015
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results