1
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Cui Y, Lanne A, Peng X, Browne E, Bhatt A, Coltman NJ, Craven P, Cox LR, Cundy NJ, Dale K, Feula A, Frampton J, Fung M, Morton M, Goff A, Salih M, Lang X, Li X, Moon C, Pascoe J, Portman V, Press C, Schulz-Utermoehl T, Lee S, Tortorella MD, Tu Z, Underwood ZE, Wang C, Yoshizawa A, Zhang T, Waddell SJ, Bacon J, Alderwick L, Fossey JS, Neagoie C. Azetidines Kill Multidrug-Resistant Mycobacterium tuberculosis without Detectable Resistance by Blocking Mycolate Assembly. J Med Chem 2024; 67:2529-2548. [PMID: 38331432 PMCID: PMC10895678 DOI: 10.1021/acs.jmedchem.3c01643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 12/19/2023] [Accepted: 01/23/2024] [Indexed: 02/10/2024]
Abstract
Tuberculosis (TB) is the leading cause of global morbidity and mortality resulting from infectious disease, with over 10.6 million new cases and 1.4 million deaths in 2021. This global emergency is exacerbated by the emergence of multidrug-resistant MDR-TB and extensively drug-resistant XDR-TB; therefore, new drugs and new drug targets are urgently required. From a whole cell phenotypic screen, a series of azetidines derivatives termed BGAz, which elicit potent bactericidal activity with MIC99 values <10 μM against drug-sensitive Mycobacterium tuberculosis and MDR-TB, were identified. These compounds demonstrate no detectable drug resistance. The mode of action and target deconvolution studies suggest that these compounds inhibit mycobacterial growth by interfering with cell envelope biogenesis, specifically late-stage mycolic acid biosynthesis. Transcriptomic analysis demonstrates that the BGAz compounds tested display a mode of action distinct from the existing mycobacterial cell wall inhibitors. In addition, the compounds tested exhibit toxicological and PK/PD profiles that pave the way for their development as antitubercular chemotherapies.
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Affiliation(s)
- Yixin Cui
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, U.K.
| | - Alice Lanne
- Institute
of Microbiology and Infection, School of Biosciences, University of Birmingham, Edgbaston, Birmingham, West
Midlands B15 2TT, U.K.
| | - Xudan Peng
- State
Key Laboratory of Respiratory Disease, China-New Zealand Joint Laboratory
on Biomedicine and Health, Guangzhou Institutes of Biomedicine and
Health, Chinese Academy of Science, 190 Kai Yuan Avenue, Science Park, Guangzhou 510530, China
| | - Edward Browne
- Sygnature
Discovery, The Discovery Building, BioCity, Pennyfoot Street, Nottingham NG1 1GR, U.K.
| | - Apoorva Bhatt
- Institute
of Microbiology and Infection, School of Biosciences, University of Birmingham, Edgbaston, Birmingham, West
Midlands B15 2TT, U.K.
| | - Nicholas J. Coltman
- School
of Biosciences, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, U.K.
| | - Philip Craven
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, U.K.
| | - Liam R. Cox
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, U.K.
| | - Nicholas J. Cundy
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, U.K.
| | - Katie Dale
- Institute
of Microbiology and Infection, School of Biosciences, University of Birmingham, Edgbaston, Birmingham, West
Midlands B15 2TT, U.K.
| | - Antonio Feula
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, U.K.
| | - Jon Frampton
- College of
Medical and Dental Sciences, University
of Birmingham, Edgbaston, Birmingham, West
Midlands B15 2TT, U.K.
| | - Martin Fung
- Centre
for Regenerative Medicine and Health, Hong Kong Institute of Science
& Innovation, Chinese Academy of Sciences, 15 Science Park West Avenue NT, Hong Kong SAR
| | - Michael Morton
- ApconiX
Ltd, BIOHUB at Alderly Park, Nether Alderly, Cheshire SK10 4TG, U.K.
| | - Aaron Goff
- Department
of Global Health and Infection, Brighton and Sussex Medical School, University of Sussex, Falmer BN1 9PX, U.K.
| | - Mariwan Salih
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, U.K.
| | - Xingfen Lang
- State
Key Laboratory of Respiratory Disease, China-New Zealand Joint Laboratory
on Biomedicine and Health, Guangzhou Institutes of Biomedicine and
Health, Chinese Academy of Science, 190 Kai Yuan Avenue, Science Park, Guangzhou 510530, China
| | - Xingjian Li
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, U.K.
- State
Key Laboratory of Respiratory Disease, China-New Zealand Joint Laboratory
on Biomedicine and Health, Guangzhou Institutes of Biomedicine and
Health, Chinese Academy of Science, 190 Kai Yuan Avenue, Science Park, Guangzhou 510530, China
| | - Chris Moon
- TB
Research Group, National Infection Service, Public Health England (UKHSA), Manor Farm Road, Porton, Salisbury SP4 0JG, U.K.
| | - Jordan Pascoe
- TB
Research Group, National Infection Service, Public Health England (UKHSA), Manor Farm Road, Porton, Salisbury SP4 0JG, U.K.
| | - Vanessa Portman
- Sygnature
Discovery, The Discovery Building, BioCity, Pennyfoot Street, Nottingham NG1 1GR, U.K.
| | - Cara Press
- Institute
of Microbiology and Infection, School of Biosciences, University of Birmingham, Edgbaston, Birmingham, West
Midlands B15 2TT, U.K.
| | - Timothy Schulz-Utermoehl
- Sygnature
Discovery, The Discovery Building, BioCity, Pennyfoot Street, Nottingham NG1 1GR, U.K.
| | - Suki Lee
- Centre
for Regenerative Medicine and Health, Hong Kong Institute of Science
& Innovation, Chinese Academy of Sciences, 15 Science Park West Avenue NT, Hong Kong SAR
| | - Micky D. Tortorella
- State
Key Laboratory of Respiratory Disease, China-New Zealand Joint Laboratory
on Biomedicine and Health, Guangzhou Institutes of Biomedicine and
Health, Chinese Academy of Science, 190 Kai Yuan Avenue, Science Park, Guangzhou 510530, China
- Centre
for Regenerative Medicine and Health, Hong Kong Institute of Science
& Innovation, Chinese Academy of Sciences, 15 Science Park West Avenue NT, Hong Kong SAR
| | - Zhengchao Tu
- State
Key Laboratory of Respiratory Disease, China-New Zealand Joint Laboratory
on Biomedicine and Health, Guangzhou Institutes of Biomedicine and
Health, Chinese Academy of Science, 190 Kai Yuan Avenue, Science Park, Guangzhou 510530, China
| | - Zoe E. Underwood
- TB
Research Group, National Infection Service, Public Health England (UKHSA), Manor Farm Road, Porton, Salisbury SP4 0JG, U.K.
| | - Changwei Wang
- State
Key Laboratory of Respiratory Disease, China-New Zealand Joint Laboratory
on Biomedicine and Health, Guangzhou Institutes of Biomedicine and
Health, Chinese Academy of Science, 190 Kai Yuan Avenue, Science Park, Guangzhou 510530, China
| | - Akina Yoshizawa
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, U.K.
| | - Tianyu Zhang
- State
Key Laboratory of Respiratory Disease, China-New Zealand Joint Laboratory
on Biomedicine and Health, Guangzhou Institutes of Biomedicine and
Health, Chinese Academy of Science, 190 Kai Yuan Avenue, Science Park, Guangzhou 510530, China
| | - Simon J. Waddell
- Department
of Global Health and Infection, Brighton and Sussex Medical School, University of Sussex, Falmer BN1 9PX, U.K.
| | - Joanna Bacon
- TB
Research Group, National Infection Service, Public Health England (UKHSA), Manor Farm Road, Porton, Salisbury SP4 0JG, U.K.
| | - Luke Alderwick
- Institute
of Microbiology and Infection, School of Biosciences, University of Birmingham, Edgbaston, Birmingham, West
Midlands B15 2TT, U.K.
- Discovery
Sciences, Charles River Laboratories, Chesterford Research Park, Saffron Walden CB10 1XL, U.K.
| | - John S. Fossey
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, U.K.
| | - Cleopatra Neagoie
- State
Key Laboratory of Respiratory Disease, China-New Zealand Joint Laboratory
on Biomedicine and Health, Guangzhou Institutes of Biomedicine and
Health, Chinese Academy of Science, 190 Kai Yuan Avenue, Science Park, Guangzhou 510530, China
- Centre
for Regenerative Medicine and Health, Hong Kong Institute of Science
& Innovation, Chinese Academy of Sciences, 15 Science Park West Avenue NT, Hong Kong SAR
- Visiting
Scientist, School of Chemistry, University
of Birmingham, Edgbaston, Birmingham, West
Midlands B15 2TT, U.K.
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2
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Nguyen TBN, Nguyen TKD, Trương VH, Tran TTN, Phan VBT, Nguyen TT, Nguyen HB, Ngo VQT, Mai VT, Molicotti P. Drug resistance and the genotypic characteristics of rpoB and katG in rifampicin- and/or isoniazid-resistant Mycobacterium tuberculosis isolates in central Vietnam. Osong Public Health Res Perspect 2023; 14:347-355. [PMID: 37920892 PMCID: PMC10626318 DOI: 10.24171/j.phrp.2023.0124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 07/31/2023] [Accepted: 08/01/2023] [Indexed: 11/04/2023] Open
Abstract
BACKGROUND Tuberculosis (TB) and drug-resistant TB (DR-TB) are national health burdens in Vietnam. In this study, we investigated the prevalence of rifampicin (RIF) and/or isoniazid (isonicotinic acid hydrazide, INH) resistance in patients with suspected TB, and applied appropriate techniques to help rapidly target DR-TB. METHODS In total, 1,547 clinical specimens were collected and cultured using the BACTEC MGIT system (Becton Dickinson and Co.). A resazurin microtiter assay (REMA) was used to determine the proportions of RIF and/or INH resistance. A real-time polymerase chain reaction panel with TaqMan probes was employed to identify the mutations of rpoB and katG associated with DR-TB in clinical isolates. Genotyping of the identified mutations was also performed. RESULTS A total of 468 Mycobacterium tuberculosis isolates were identified using the REMA. Of these isolates, 106 (22.6%) were found to be resistant to 1 or both antibiotics. Of the resistant isolates, 74 isolates (69.8%) were resistant to isoniazid (INH) only, while 1 isolate (0.94%) was resistant to RIF only. Notably, 31 isolates (29.24%) were resistant to both antibiotics. Of the 41 phenotypically INH-resistant isolates, 19 (46.3%) had the Ser315Thr mutation. There were 8 different rpoB mutations in 22 (68.8%) of the RIF-resistant isolates. The most frequently detected mutations were at codons 531 (37.5%), 526 (18.8%), and 516 (6.3%). CONCLUSION To help prevent new cases of DR-TB in Vietnam, it is crucial to gain a comprehensive understanding of the genotypic DR-TB isolates.
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Affiliation(s)
- Thi Binh Nguyen Nguyen
- Department of Infectious Diseases and Tuberculosis, Hue University of Medicine and Pharmacy, Hue University, Hue, Vietnam
| | | | | | - Thi Tuyet Ngoc Tran
- Department of Microbiology, Hue University of Medicine and Pharmacy, Hue University, Hue, Vietnam
| | - van Bao Thang Phan
- Department of Microbiology, Hue University of Medicine and Pharmacy, Hue University, Hue, Vietnam
| | - Thi Tuyen Nguyen
- Department of Microbiology, Hue University of Medicine and Pharmacy, Hue University, Hue, Vietnam
| | - Hoang Bach Nguyen
- Department of Microbiology, Hue University of Medicine and Pharmacy, Hue University, Hue, Vietnam
| | - Viet Quynh Tram Ngo
- Department of Microbiology, Hue University of Medicine and Pharmacy, Hue University, Hue, Vietnam
| | - Van Tuan Mai
- Department of Microbiology, Hue Central Hospital, Hue, Vietnam
| | - Paola Molicotti
- Department of Biomedical Science, Microbiology and Clinical Microbiology, University of Sassari, Sassari, Italy
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3
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Saleh LY, Altıntaş B, Filiciotto L, Zorlu Y, Luque R, Ülger M, Döndaş HA, Altug C. Structural assessment of novel spiro-naphthalene-1.2'- [1,3,4]oxadiazol-4-ones prepared under batch and flow chemistry with a concise antifungal and anti(myco)bacterial activity. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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4
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Shahi F, Khosravi AD, Tabandeh MR, Salmanzadeh S. Investigation of the Rv3065, Rv2942, Rv1258c, Rv1410c, and Rv2459 efflux pump genes expression among multidrug-resistant Mycobacterium tuberculosis clinical isolates. Heliyon 2021; 7:e07566. [PMID: 34337183 PMCID: PMC8318855 DOI: 10.1016/j.heliyon.2021.e07566] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 02/23/2021] [Accepted: 07/09/2021] [Indexed: 11/30/2022] Open
Abstract
Background Different resistance mechanisms for multidrug-resistant tuberculosis (MDR-TB) and extensively drug-resistant tuberculosis (XDR-TB) have been reported. Although mutations in target genes are the main cause of drug resistance, efflux pumps (Eps) also play an important role in this process. Here, we investigated the overexpression of five putative EP genes plus gene mutations in MDR-TB clinical isolates. Methods A total of 27 M. tuberculosis (Mtb) clinical isolates including, 22 MDR and 5 sensitive isolates were analyzed. Minimum inhibitory concentrations (MIC) were determined in the absence and presence of efflux inhibitor. The expression level of 5 EP genes (Rv3065, Rv2942, Rv1258c, Rv1410c, Rv2459) was investigated by quantitative real time PCR (RT-qPCR). DNA sequencing of rpoB, katG, and inhA promoter was done. Results Among the 22 MDR-TB isolates, 13 (59.1%) showed significant overexpression (>4-fold) for at least one EP gene. The expression levels of 5 genes were significantly higher (P < 0.05) in MDR-TB isolates than sensitive isolates. The Rv3065 (22.7%), and Rv1410c (18.2%) were found to be the most commonly overexpressed EPs. The observed MICs were as follows: RIF (2 to >128 μg/ml) and INH (2-32 μg/ml). After efflux pump inhibitor exposure, 10/22 (45.45%) isolates showed a decrease in MIC of INH, and 17/22 (77.27%) isolates showed a decrease in MIC of RIF. Of the isolates that overexpressed, 4 isolates lacked mutation in inhA, rpoB, and katG genes and 10 ones lacked mutation in inhA and katG. Conclusion The results showed that overexpression of EP genes in Mtb isolates, besides target gene mutations can contribute to the development of MDR phenotype.
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Affiliation(s)
- Fatemeh Shahi
- Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Microbiology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Azar Dokht Khosravi
- Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Microbiology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Iranian Study Group on Microbial Drug Resistance, Iran
| | - Mohammad Reza Tabandeh
- Department of Basic Sciences, Division of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Shokrollah Salmanzadeh
- Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Tropical Medicine Ward, Razi Teaching Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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5
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Angelova VT, Pencheva T, Buyukliev R, Yovkova EK, Valkova I, Momekov G, Vulcheva V. Antimycobacterial Activity, In Silico ADME Evaluation, and Docking Study of Novel Thiazolidinedione and Imidazolidinone Conjugates. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1068162021010027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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6
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Al-Dahmash ND, Al-Ansari MM, Al-Otibi FO, Singh AR. Frankincense, an aromatic medicinal exudate of Boswellia carterii used to mediate silver nanoparticle synthesis: Evaluation of bacterial molecular inhibition and its pathway. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102337] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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7
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Gungor SSU, Guzel S, Ulger M, Kokdil G. Chemical Composition and Antioxidant and Antimicrobialactivities of Turkish Endemic Trigonella rhytidocarpa Seeds. Chem Nat Compd 2021. [DOI: 10.1007/s10600-021-03298-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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WITHDRAWN: Drug susceptibility testing of Nontuberculous mycobacteria by broth micro dilution method. Indian J Med Microbiol 2020. [DOI: 10.1016/j.ijmmb.2020.10.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Picconi P, Jeeves R, Moon CW, Jamshidi S, Nahar KS, Laws M, Bacon J, Rahman KM. Noncytotoxic Pyrrolobenzodiazepine-Ciprofloxacin Conjugate with Activity against Mycobacterium tuberculosis. ACS OMEGA 2019; 4:20873-20881. [PMID: 31867477 PMCID: PMC6921268 DOI: 10.1021/acsomega.9b00834] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 10/21/2019] [Indexed: 05/16/2023]
Abstract
The development of new antitubercular agents for the treatment of infections caused by multidrug-resistant (MDR) Mycobacterium tuberculosis is an urgent priority. Pyrrolobenzodiazepines (PBDs) are a promising class of antibacterial agents that were initially discovered and isolated from a range of Streptomyces species. Recently, C8-linked PBD monomers have been shown to work by inhibiting DNA gyrase and have demonstrated activity against M. tuberculosis. However, both PBD monomers and dimers are toxic to eukaryotic cells, limiting their development as antibacterial agents. To eliminate the toxicity associated with PBDs and explore the effect of C8-modification with a known antibacterial agent with the same mechanism of action (i.e., ciprofloxacin, a gyrase inhibitor), we synthesized a C8-linked PBD-ciprofloxacin (PBD-CIP, 3) hybrid. The hybrid compound displayed minimum inhibitory concentration values of 0.4 or 2.1 μg/mL against drug-sensitive and drug-resistant M. tuberculosis strains, respectively. A molecular modeling study showed good interaction of compound 3 with wild-type M. tuberculosis DNA gyrase, suggesting gyrase inhibition as a possible mechanism of action. Compound 3 is a nontoxic combination hybrid that can be utilized as a new scaffold and further optimized to develop new antitubercular agents.
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Affiliation(s)
- Pietro Picconi
- Institute
of Pharmaceutical Science, School of Cancer and Pharmaceutical Science, King’s College London, London SE1 9NH, U.K.
| | - Rose Jeeves
- TB
Research Group, National Infection Service, Public Health England, Porton Down, Salisbury, Wiltshire SP4 0JG, U.K.
| | - Christopher William Moon
- TB
Research Group, National Infection Service, Public Health England, Porton Down, Salisbury, Wiltshire SP4 0JG, U.K.
| | - Shirin Jamshidi
- Institute
of Pharmaceutical Science, School of Cancer and Pharmaceutical Science, King’s College London, London SE1 9NH, U.K.
| | - Kazi S. Nahar
- Institute
of Pharmaceutical Science, School of Cancer and Pharmaceutical Science, King’s College London, London SE1 9NH, U.K.
| | - Mark Laws
- Institute
of Pharmaceutical Science, School of Cancer and Pharmaceutical Science, King’s College London, London SE1 9NH, U.K.
| | - Joanna Bacon
- TB
Research Group, National Infection Service, Public Health England, Porton Down, Salisbury, Wiltshire SP4 0JG, U.K.
- E-mail: . Tel: +44 (0) 1980 612100 (J.B.)
| | - Khondaker Miraz Rahman
- Institute
of Pharmaceutical Science, School of Cancer and Pharmaceutical Science, King’s College London, London SE1 9NH, U.K.
- E-mail: . Tel: +44 (0) 207 848 1891 (K.M.R.)
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10
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Gemili M, Nural Y, Keleş E, Aydıner B, Seferoğlu N, Ülger M, Şahin E, Erat S, Seferoğlu Z. Novel highly functionalized 1,4-naphthoquinone 2-iminothiazole hybrids: Synthesis, photophysical properties, crystal structure, DFT studies, and anti(myco)bacterial/antifungal activity. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.06.087] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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11
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Wound healing properties, antimicrobial and antioxidant activities of Salvia kronenburgii Rech. f. and Salvia euphratica Montbret, Aucher & Rech. f. var. euphratica on excision and incision wound models in diabetic rats. Biomed Pharmacother 2019; 111:1260-1276. [DOI: 10.1016/j.biopha.2019.01.038] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 01/05/2019] [Accepted: 01/09/2019] [Indexed: 01/27/2023] Open
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12
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Angelova VT, Pencheva T, Vassilev N, Simeonova R, Momekov G, Valcheva V. New indole and indazole derivatives as potential antimycobacterial agents. Med Chem Res 2019. [DOI: 10.1007/s00044-019-02293-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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13
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Mosaei H, Molodtsov V, Kepplinger B, Harbottle J, Moon CW, Jeeves RE, Ceccaroni L, Shin Y, Morton-Laing S, Marrs ECL, Wills C, Clegg W, Yuzenkova Y, Perry JD, Bacon J, Errington J, Allenby NEE, Hall MJ, Murakami KS, Zenkin N. Mode of Action of Kanglemycin A, an Ansamycin Natural Product that Is Active against Rifampicin-Resistant Mycobacterium tuberculosis. Mol Cell 2018; 72:263-274.e5. [PMID: 30244835 PMCID: PMC6202310 DOI: 10.1016/j.molcel.2018.08.028] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 07/19/2018] [Accepted: 08/17/2018] [Indexed: 01/07/2023]
Abstract
Antibiotic-resistant bacterial pathogens pose an urgent healthcare threat, prompting a demand for new medicines. We report the mode of action of the natural ansamycin antibiotic kanglemycin A (KglA). KglA binds bacterial RNA polymerase at the rifampicin-binding pocket but maintains potency against RNA polymerases containing rifampicin-resistant mutations. KglA has antibiotic activity against rifampicin-resistant Gram-positive bacteria and multidrug-resistant Mycobacterium tuberculosis (MDR-M. tuberculosis). The X-ray crystal structures of KglA with the Escherichia coli RNA polymerase holoenzyme and Thermus thermophilus RNA polymerase-promoter complex reveal an altered-compared with rifampicin-conformation of KglA within the rifampicin-binding pocket. Unique deoxysugar and succinate ansa bridge substituents make additional contacts with a separate, hydrophobic pocket of RNA polymerase and preclude the formation of initial dinucleotides, respectively. Previous ansa-chain modifications in the rifamycin series have proven unsuccessful. Thus, KglA represents a key starting point for the development of a new class of ansa-chain derivatized ansamycins to tackle rifampicin resistance.
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Affiliation(s)
- Hamed Mosaei
- Centre for Bacterial Cell Biology, Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne NE2 4AX, UK
| | - Vadim Molodtsov
- Department of Biochemistry and Molecular Biology, The Center for RNA Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA
| | - Bernhard Kepplinger
- Centre for Bacterial Cell Biology, Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne NE2 4AX, UK,Demuris Limited, Newcastle Biomedicine Bio-Incubators, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - John Harbottle
- Centre for Bacterial Cell Biology, Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne NE2 4AX, UK
| | - Christopher William Moon
- TB Research Group, National Infection Service, Public Health England, Manor Farm Road, Porton, Salisbury SP4 0JG, UK
| | - Rose Elizabeth Jeeves
- TB Research Group, National Infection Service, Public Health England, Manor Farm Road, Porton, Salisbury SP4 0JG, UK
| | - Lucia Ceccaroni
- Centre for Bacterial Cell Biology, Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne NE2 4AX, UK
| | - Yeonoh Shin
- Department of Biochemistry and Molecular Biology, The Center for RNA Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA
| | - Stephanie Morton-Laing
- Chemistry, School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
| | | | - Corinne Wills
- Chemistry, School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
| | - William Clegg
- Chemistry, School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
| | - Yulia Yuzenkova
- Centre for Bacterial Cell Biology, Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne NE2 4AX, UK
| | - John David Perry
- Microbiology Department, Freeman Hospital, Newcastle upon Tyne NE7 7DN, UK
| | - Joanna Bacon
- TB Research Group, National Infection Service, Public Health England, Manor Farm Road, Porton, Salisbury SP4 0JG, UK
| | - Jeff Errington
- Centre for Bacterial Cell Biology, Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne NE2 4AX, UK,Demuris Limited, Newcastle Biomedicine Bio-Incubators, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | | | - Michael John Hall
- Chemistry, School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
| | - Katsuhiko S. Murakami
- Department of Biochemistry and Molecular Biology, The Center for RNA Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA,Corresponding author
| | - Nikolay Zenkin
- Centre for Bacterial Cell Biology, Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne NE2 4AX, UK,Corresponding author
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14
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Nural Y. Synthesis, antimycobacterial activity, and acid dissociation constants of polyfunctionalized 3-[2-(pyrrolidin-1-yl)thiazole-5-carbonyl]-2H-chromen-2-one derivatives. MONATSHEFTE FUR CHEMIE 2018. [DOI: 10.1007/s00706-018-2250-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Philipova I, Valcheva V, Mihaylova R, Mateeva M, Doytchinova I, Stavrakov G. Synthetic piperine amide analogs with antimycobacterial activity. Chem Biol Drug Des 2017; 91:763-768. [PMID: 29130602 DOI: 10.1111/cbdd.13140] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 10/17/2017] [Accepted: 11/01/2017] [Indexed: 12/15/2022]
Abstract
Piperine amide analogs are synthesized by replacement of the piperidine moiety with different types of cyclic amines, including adamantyl and monoterpene-derived fragments. The compounds are screened for activity against Mycobacterium tuberculosis H37Rv. The most potent compounds are the 1-adamantyl and the monoterpene-derived hybrids, which combine nanomolar antimycobacterial activity with low cytotoxicity against human cells. The presence of quaternary carbon atom as main structural requirement for anti-TB activity is pointed out by a QSAR study. The most promising compound is the (+)-isopinocampheylamine-derived amide which is characterized with selectivity index of 1387.8.
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Affiliation(s)
- Irena Philipova
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Violeta Valcheva
- Institute of Microbiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | | | - Mina Mateeva
- Faculty of Pharmacy, Medical University of Sofia, Sofia, Bulgaria
| | | | - Georgi Stavrakov
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria.,Faculty of Pharmacy, Medical University of Sofia, Sofia, Bulgaria
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16
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Ulloa-Ogaz AL, Piñón-Castillo HA, Muñoz-Castellanos LN, Athie-García MS, Ballinas-Casarrubias MDL, Murillo-Ramirez JG, Flores-Ongay LÁ, Duran R, Orrantia-Borunda E. Oxidative damage to Pseudomonas aeruginosa ATCC 27833 and Staphylococcus aureus ATCC 24213 induced by CuO-NPs. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:22048-22060. [PMID: 28791555 DOI: 10.1007/s11356-017-9718-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 07/04/2017] [Indexed: 06/07/2023]
Abstract
The cytotoxicity of nanoparticles (NPs) and their properties are important issues in nanotechnology research. Particularly, NPs affect the metabolism of microorganisms due to NP interactions with some biomolecules. In order to assess the mechanisms underlying NPs toxicity, we studied the damage caused by copper oxide nanoparticles (CuO-NPs) on Staphylococcus aureus ATCC 24213 and Pseudomonas aeruginosa ATCC 27833. Spherical CuO-NPs characterized by their diameter (13 ± 3 nm) were synthesized with a maximum of 254 nm. These NPs reduced cell viability, with a minimum inhibitory concentration (MIC) of 500 and 700 ppm for Staphylococcus aureus and Pseudomonas aeruginosa, respectively. Surfactant was added to reduce the NP agglomeration, but it did not present any effect. The mechanism of CuO-NPs as antimicrobial agent was assessed by analyzing solubilized Cu2+, quantifying DNA release in the culture media, and measuring intracellular reactive oxygen species (ROS). CuO-NPs induced severe damage on cells as revealed by confocal optical microscopy and scanning electron microscopy (SEM). Our results indicated that CuO-NPs interacted with bacteria, triggering an intracellular signaling network which produced oxidative stress, leading to ROS generation. Finally, we concluded that CuO-NPs exhibited higher antibacterial activity on Gram-negative bacteria than on Gram-positive ones.
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Affiliation(s)
- Ana Laura Ulloa-Ogaz
- Universidad Autónoma de Chihuahua Circuito No. 1, Nuevo Campus Universitario, Apdo. Postal 1552, 31240, Chihuahua, Chihuahua, México.
| | - Hilda Amelia Piñón-Castillo
- Universidad Autónoma de Chihuahua Circuito No. 1, Nuevo Campus Universitario, Apdo. Postal 1552, 31240, Chihuahua, Chihuahua, México.
| | - Laila Nayzzel Muñoz-Castellanos
- Universidad Autónoma de Chihuahua Circuito No. 1, Nuevo Campus Universitario, Apdo. Postal 1552, 31240, Chihuahua, Chihuahua, México
| | - Martha Samira Athie-García
- Universidad Autónoma de Chihuahua Circuito No. 1, Nuevo Campus Universitario, Apdo. Postal 1552, 31240, Chihuahua, Chihuahua, México
| | | | - José Guadalupe Murillo-Ramirez
- Centro de Investigación en Materiales Avanzados, S. C. Miguel de Cervantes 120, Complejo Industrial Chihuahua, 31109, Chihuahua, Chihuahua, México
| | | | - Robert Duran
- Equipe Environment et Microbiologie, MELODY Group, UMR IPREM5254, IBEAS, Université de Pau et des Pays de l'Adour, Pau, France
| | - Erasmo Orrantia-Borunda
- Centro de Investigación en Materiales Avanzados, S. C. Miguel de Cervantes 120, Complejo Industrial Chihuahua, 31109, Chihuahua, Chihuahua, México
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17
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Ohikhena FU, Wintola OA, Afolayan AJ. Evaluation of the Antibacterial and Antifungal Properties of Phragmanthera capitata (Sprengel) Balle (Loranthaceae), a Mistletoe Growing on Rubber Tree, Using the Dilution Techniques. ScientificWorldJournal 2017; 2017:9658598. [PMID: 28642934 PMCID: PMC5470015 DOI: 10.1155/2017/9658598] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 05/07/2017] [Indexed: 12/29/2022] Open
Abstract
The alarming increase in multidrug resistance of pathogenic microorganisms to conventional drugs in recent years has prompted the search for new leads in alternative remedies in natural products. Hence, this study was aimed at evaluating the antimicrobial properties of Phragmanthera capitata, a parasitic mistletoe growing on rubber trees. The in vitro antimicrobial activities of the acetone, methanol, ethanol, and aqueous extracts were investigated using five gram-negative and five gram-positive bacteria and four fungi. A 96-well resazurin broth and agar dilution techniques were used for the determination of the Minimum Inhibitory and Bactericidal Concentrations. The antibacterial activity of the organic extracts had comparative effects on all the bacteria with a MIC of 1.25 to 5 mg/mL and MBC of 2.5 to 10 mg/mL. However, the acetone extract showed higher bactericidal effect while the aqueous extract was not active. The organic solvent extracts also showed antifungal activities on two of the fungi with a MIC of 1.25 mg/mL to 10 mg/mL. However, the aqueous extract had the highest activity inhibiting all the fungi with a MIC of ≤0.3125 to 1.25 mg/mL. The study supports the ethnomedicinal claims of P. capitata as a remedy for the diseases/infections caused by these organisms.
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Affiliation(s)
- Franklin Uangbaoje Ohikhena
- Medicinal Plants and Economic Development (MPED) Research Centre, Botany Department, University of Fort Hare, Alice, South Africa
| | - Olubunmi Abosede Wintola
- Medicinal Plants and Economic Development (MPED) Research Centre, Botany Department, University of Fort Hare, Alice, South Africa
| | - Anthony Jide Afolayan
- Medicinal Plants and Economic Development (MPED) Research Centre, Botany Department, University of Fort Hare, Alice, South Africa
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18
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Vijayaraj A, Prabu R, Suresh R, Mathivanan N, Narayanan V. Synthesis of New Acyclic Schiff Base Oxovanadium(IV) Complexes and Their Electrochemical, Catecholase, and Antimicrobial Studies of Minimum Inhibitory Concentration. ACTA ACUST UNITED AC 2015. [DOI: 10.1080/15533174.2015.1031040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- A. Vijayaraj
- Department of Inorganic Chemistry, School of Chemical Sciences, University of Madras, Guindy Maraimalai Campus, Chennai, India
| | - R. Prabu
- Department of Inorganic Chemistry, School of Chemical Sciences, University of Madras, Guindy Maraimalai Campus, Chennai, India
| | - R. Suresh
- Department of Inorganic Chemistry, School of Chemical Sciences, University of Madras, Guindy Maraimalai Campus, Chennai, India
| | - N. Mathivanan
- Centre for Advanced Studies in Botany, University of Madras, Guindy Maraimalai Campus, Chennai, India
| | - V. Narayanan
- Department of Inorganic Chemistry, School of Chemical Sciences, University of Madras, Guindy Maraimalai Campus, Chennai, India
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Zhang Z, Yan J, Xu K, Ji Z, Li L. Tetrandrine reverses drug resistance in isoniazid and ethambutol dual drug-resistant Mycobacterium tuberculosis clinical isolates. BMC Infect Dis 2015; 15:153. [PMID: 25887373 PMCID: PMC4417324 DOI: 10.1186/s12879-015-0905-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 03/13/2015] [Indexed: 02/04/2023] Open
Abstract
Background Tetrandrine is a natural chemical product purified from fourstamen stephania root which recently has been shown to act similarly as synthesized drug efflux pump inhibitor verapamil. The aim of the study is to examine whether tetrandrine could potentiate anti-tubercular drugs to which Mycobacterium tuberculosis (MTB) has turned resistant via efflux mechanisms. Methods We screened 200 MTB clinical isolates using drug sensitivity test to look for those who have turned resistant to the drugs most probably due to efflux mechanisms. We found 29 isoniazid (INH) and ethambutol (EMB) - dual resistant (IEDR) strains. Then we tested if treatment with tetrandrine or verapamil could reverse drug resistance to INH and/or EMB in IEDR isolates. Results There is a parallel resistance among EMB- and INH-resistant strains in the tested clinical isolates. Among INH-resistant strains, 65% was also EMB-resistant. This suggests an involvement of efflux mechanisms which can lead to dual drug resistance in IEDR clinical isolates. Similar to a synthesized efflux pump inhibitor verapamil, tetrandrine treatment together with INH or EMB brought down the MICs from the clinical level of drug resistance to the sensitive range of both drugs. The effective rate reached 82% among IEDR clinical isolates. Conclusions Combinational application of tetrandrine with INH or EMB increased drug efficacy. Drugs like tetrandrine may help to reduce drug dosage thus alleviate side effects.
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Affiliation(s)
- Zhe Zhang
- Research Center of Infection and Immunity, Department of Microbiology and Parasitology, School of Basic Medical Sciences, School of Medicine, Zhejiang University, Hangzhou, China.
| | - Jie Yan
- Research Center of Infection and Immunity, Department of Microbiology and Parasitology, School of Basic Medical Sciences, School of Medicine, Zhejiang University, Hangzhou, China.
| | - Kaijin Xu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital of School of Medicine, Zhejiang University, 15th floor, Building 6A, No. 79 Qingchun Road, Shangcheng District, Hangzhou, 310003, Zhejiang Province, China.
| | - Zhongkang Ji
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital of School of Medicine, Zhejiang University, 15th floor, Building 6A, No. 79 Qingchun Road, Shangcheng District, Hangzhou, 310003, Zhejiang Province, China.
| | - Lanjuan Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital of School of Medicine, Zhejiang University, 15th floor, Building 6A, No. 79 Qingchun Road, Shangcheng District, Hangzhou, 310003, Zhejiang Province, China.
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20
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Patil SS, Mohite ST, Kulkarni SA, Udgaonkar US. Resazurin tube method: rapid, simple, and inexpensive method for detection of drug resistance in the clinical isolates of mycobacterium tuberculosis. J Glob Infect Dis 2014; 6:151-6. [PMID: 25538453 PMCID: PMC4265830 DOI: 10.4103/0974-777x.145239] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background: Tuberculosis (TB) remains a serious public health problem worldwide. The emergence of drug resistance and multidrug resistance (MDR) has become the main threat to TB treatment and control programs. Rapid detection is critical for the effective treatment of patients. In recent times, a new method using the colorimetric indicator resazurin has been proposed for drug susceptibility of Mycobacterium tuberculosis. Materials and Methods: In this study, the resazurin reduction assay was adapted to screw cap tubes. Using the Resazurin Tube Method (RTM), a total of 100 clinical isolates were tested against Rifampicin (RIF) and Isoniazide (INH). By visual reading, the minimum inhibitory concentrations (MICs) were obtained after eight days. The results obtained were compared with the gold standard proportion method. Results: Excellent results were obtained for RTM with a sensitivity of 100% for both RIF and INH, with a specificity of 98.7 and 95.3%, respectively. Kappa is the measure of agreement between the RTM and proportion method (PM) for RIF and INH, which was found to be 0.972 and 0.935 for RIF and INH, respectively. Conclusion: The RTM appears to be a reliable method for the rapid and simultaneous detection of MDR-TB and drug susceptibility testing (DST) of M. tuberculosis. It is simple, inexpensive, and with no biohazard risk involved.
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Affiliation(s)
- Santosh S Patil
- Department of Microbiology, Bharati Vidyapeeth Deemed University, Medical College and Hospital, Sangli, Maharashtra, India
| | | | - Sunanda A Kulkarni
- Department of Microbiology, Bharati Vidyapeeth Deemed University, Medical College and Hospital, Sangli, Maharashtra, India
| | - Usha S Udgaonkar
- Department of Microbiology, Bharati Vidyapeeth Deemed University, Medical College and Hospital, Sangli, Maharashtra, India
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21
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Coban AY, Deveci A, Sunter AT, Palomino JC, Martin A. Resazurin microtiter assay for isoniazid, rifampicin, ethambutol and streptomycin resistance detection in Mycobacterium tuberculosis: Updated meta-analysis. Int J Mycobacteriol 2014; 3:230-41. [DOI: 10.1016/j.ijmyco.2014.09.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 09/04/2014] [Indexed: 11/26/2022] Open
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22
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Ferrer-Navarro M, Planell R, Yero D, Mongiardini E, Torrent G, Huedo P, Martínez P, Roher N, Mackenzie S, Gibert I, Daura X. Abundance of the Quorum-Sensing Factor Ax21 in Four Strains of Stenotrophomonas maltophilia Correlates with Mortality Rate in a New Zebrafish Model of Infection. PLoS One 2013; 8:e67207. [PMID: 23840626 PMCID: PMC3693955 DOI: 10.1371/journal.pone.0067207] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Accepted: 05/15/2013] [Indexed: 02/06/2023] Open
Abstract
Stenotrophomonas maltophilia is a Gram-negative pathogen with emerging nosocomial incidence. Little is known about its pathogenesis and the genomic diversity exhibited by clinical isolates complicates the study of pathogenicity and virulence factors. Here, we present a strategy to identify such factors in new clinical isolates of S. maltophilia, incorporating an adult-zebrafish model of S. maltophilia infection to evaluate relative virulence coupled to 2D difference gel electrophoresis to explore underlying differences in protein expression. In this study we report upon three recent clinical isolates and use the collection strain ATCC13637 as a reference. The adult-zebrafish model shows discrimination capacity, i.e. from very low to very high mortality rates, with clinical symptoms very similar to those observed in natural S. maltophilia infections in fish. Strain virulence correlates with resistance to human serum, in agreement with previous studies in mouse and rat and therefore supporting zebrafish as a replacement model. Despite its clinical origin, the collection strain ATCC13637 showed obvious signs of attenuation in zebrafish, with null mortality. Multilocus-sequence-typing analysis revealed that the most virulent strains, UV74 and M30, exhibit the strongest genetic similitude. Differential proteomic analysis led to the identification of 38 proteins with significantly different abundance in the three clinical strains relative to the reference strain. Orthologs of several of these proteins have been already reported to have a role in pathogenesis, virulence or resistance mechanisms thus supporting our strategy. Proof of concept is further provided by protein Ax21, whose abundance is shown here to be directly proportional to mortality in the zebrafish infection model. Indeed, recent studies have demonstrated that this protein is a quorum-sensing-related virulence factor.
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Affiliation(s)
- Mario Ferrer-Navarro
- Institut de Biotecnologia i de Biomedicina (IBB), Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallès, Barcelona, Spain
| | - Raquel Planell
- Institut de Biotecnologia i de Biomedicina (IBB), Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallès, Barcelona, Spain
| | - Daniel Yero
- Institut de Biotecnologia i de Biomedicina (IBB), Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallès, Barcelona, Spain
| | - Elías Mongiardini
- Institut de Biotecnologia i de Biomedicina (IBB), Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallès, Barcelona, Spain
| | - Gerard Torrent
- Institut de Biotecnologia i de Biomedicina (IBB), Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallès, Barcelona, Spain
| | - Pol Huedo
- Institut de Biotecnologia i de Biomedicina (IBB), Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallès, Barcelona, Spain
- Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallès, Barcelona, Spain
| | - Paula Martínez
- Institut de Biotecnologia i de Biomedicina (IBB), Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallès, Barcelona, Spain
- Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallès, Barcelona, Spain
| | - Nerea Roher
- Institut de Biotecnologia i de Biomedicina (IBB), Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallès, Barcelona, Spain
| | - Simon Mackenzie
- Institut de Biotecnologia i de Biomedicina (IBB), Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallès, Barcelona, Spain
- Institute of Aquaculture, University of Stirling, Stirling, Scotland, United Kingdom
| | - Isidre Gibert
- Institut de Biotecnologia i de Biomedicina (IBB), Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallès, Barcelona, Spain
- Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallès, Barcelona, Spain
- * E-mail: (XD); (IG)
| | - Xavier Daura
- Institut de Biotecnologia i de Biomedicina (IBB), Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallès, Barcelona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain
- * E-mail: (XD); (IG)
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Miyata M, Pavan FR, Sato DN, Marino LB, Hirata MH, Cardoso RF, de Melo FAF, Leite CQF. Comparison of resazurin microtiter assay performance and BACTEC MGIT 960 in the susceptibility testing of Brazilian clinical isolates of Mycobacterium tuberculosis to four first-line drugs. Braz J Microbiol 2013; 44:281-5. [PMID: 24159317 PMCID: PMC3804211 DOI: 10.1590/s1517-83822013005000028] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Accepted: 07/02/2012] [Indexed: 11/22/2022] Open
Abstract
We assessed the performance of REMA in comparison with BACTEC MGIT 960 in the susceptibility testing of 80 Mycobacterium tuberculosis clinical isolates from Clemente Ferreira Institute against four drugs. REMA proved to be a rapid and accurate method, providing excellent correlation with BACTEC MGIT 960, with the exception of results for the ethambutol drug.
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Affiliation(s)
- Marcelo Miyata
- Universidade Estadual Paulista, Faculdade de Ciências Farmacêuticas, Araraquara, SP, Brazil
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Khalifa RA, Nasser MS, Gomaa AA, Osman NM, Salem HM. Resazurin Microtiter Assay Plate method for detection of susceptibility of multidrug resistant Mycobacterium tuberculosis to second-line anti-tuberculous drugs. EGYPTIAN JOURNAL OF CHEST DISEASES AND TUBERCULOSIS 2013. [DOI: 10.1016/j.ejcdt.2013.05.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Chang KC, Yew WW, Zhang Y. A systematic review of rapid drug susceptibility tests for multidrug-resistant tuberculosis using rifampin resistance as a surrogate. ACTA ACUST UNITED AC 2013; 3:99-122. [PMID: 23485158 DOI: 10.1517/17530050802665694] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND The emergence of multidrug-resistant tuberculosis (MDR-TB) has prompted the development of rapid drug susceptibility assays with a focus on rifampin in recent years. Systematic reviews with evaluation of predictive values for different assays are scarce. METHOD MEDLINE was searched on 6 September 2008 for English articles that contain concurrent original data for generating summary measures of sensitivity, specificity and likelihood ratios of rapid rifampin susceptibility assays. RESULTS/CONCLUSIONS Significant heterogeneity was found in likelihood ratios across studies of all assays except nitrate reductase assay and colorimetric assays. Although rapid assays are fairly reliable for ruling out MDR-TB, careful consideration of clinical risk factors is required before using these assays to rule in MDR-TB under different epidemiological settings.
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Affiliation(s)
- Kwok-Chiu Chang
- Senior Medical and Health Officer Tuberculosis and Chest Service, Wanchai Chest Clinic, Department of Health, 1st Floor, Wanchai Polyclinic, 99, Kennedy Road, Wanchai, Hong Kong, China +852 25911147 ; +852 28346627 ;
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26
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Kwon TY, Hong SH, Kim YK, Kim KH. Antibacterial effects of 4-META/MMA-TBB resin containing chlorhexidine. J Biomed Mater Res B Appl Biomater 2010; 92:561-7. [PMID: 20024968 DOI: 10.1002/jbm.b.31553] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This study evaluated the antibacterial effects of 4-acryloyloxyethyl trimellitate anhydride/methyl methacrylate-tri-n-butylborane (4-META/MMA-TBB) resin containing chlorhexidine (CHX) digluconate. The CHX was incorporated into the resins at varying concentrations from 0.0 (control) to 3.0%. The antibacterial effect of each resin against seven microorganisms was examined using agar diffusion tests. Growth inhibition of two streptococci was also tested in brain heart infusion (BHI) liquid broth containing each resin. Release of CHX was analyzed using HPLC, and enamel and dentin bond strengths of each resin were measured. In the agar diffusion tests, growth of all the microorganisms was inhibited by the resin specimens containing CHX at 1.0% or higher except for Enterococcus faecalis. There was greater sensitivity in Streptococcus mutans and Streptococcus sobrinus than in the other bacteria tested. Complete growth inhibition of these two streptococci was observed in BHI liquid broth containing 1.0-1.5% or greater CHX-incorporated resin. According to HPLC analysis, 1.0% and 1.5% CHX-containing resins released means of 3.63 and 8.59 microg/mL of CHX, respectively. Specimens with 0.5-1.5% and 0.5-2.0% CHX exhibited no significant reduction in enamel and dentin bond strengths, respectively, when compared to the control (p > 0.05). This in vitro study suggested that incorporation of 1.0-1.5% CHX digluconate into the 4-META resin is optimal in terms of antibacterial effects and bond strength to the tooth.
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Affiliation(s)
- Tae-Yub Kwon
- Department of Dental Biomaterials, School of Dentistry, Kyungpook National University, Jung-gu, Daegu 700-412, Korea
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27
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Affolabi D, Sanoussi N, Odoun M, Martin A, Koukpemedji L, Palomino JC, Kestens L, Anagonou S, Portaels F. Rapid detection of multidrug-resistant Mycobacterium tuberculosis in Cotonou (Benin) using two low-cost colorimetric methods: resazurin and nitrate reductase assays. J Med Microbiol 2008; 57:1024-1027. [DOI: 10.1099/jmm.0.2008/000406-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Dissou Affolabi
- Mycobacteriology Unit, Institute of Tropical Medicine, Antwerp 2000, Belgium
- Laboratoire de Référence des Mycobactéries, BP 817, Cotonou, Bénin
| | - N'Dira Sanoussi
- Laboratoire de Référence des Mycobactéries, BP 817, Cotonou, Bénin
| | - Mathieu Odoun
- Laboratoire de Référence des Mycobactéries, BP 817, Cotonou, Bénin
| | - Anandi Martin
- Médecins Sans Frontières, 75011 Paris, France
- Mycobacteriology Unit, Institute of Tropical Medicine, Antwerp 2000, Belgium
| | | | | | - Luc Kestens
- Immnunology Unit, Institute of Tropical Medicine, Antwerp 2000, Belgium
| | - Séverin Anagonou
- Laboratoire de Référence des Mycobactéries, BP 817, Cotonou, Bénin
| | - Françoise Portaels
- Mycobacteriology Unit, Institute of Tropical Medicine, Antwerp 2000, Belgium
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28
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Palomino JC, Martin A, Portaels F. Rapid drug resistance detection in Mycobacterium tuberculosis: a review of colourimetric methods. Clin Microbiol Infect 2007; 13:754-62. [PMID: 17378933 DOI: 10.1111/j.1469-0691.2007.01698.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Several new methods to detect drug resistance in Mycobacterium tuberculosis have been proposed in recent years. Colourimetric methods that use redox indicators or the nitrate reduction assay have received increasing attention because of their simplicity and the absence of any requirement for sophisticated equipment or highly trained personnel. Several studies have evaluated their accuracy and performance in comparison with reference standard methods, particularly for the detection of resistance to rifampicin and isoniazid, which are the two most important drugs used for the treatment of tuberculosis. This review describes the development, evaluation and implementation of these methods as rapid alternative tests for the detection of multidrug resistance in M. tuberculosis. Based on published evidence and the high accuracy of colourimetric methods for detecting drug resistance in M. tuberculosis, these methods seem to be appropriate for implementation in high-burden low-resource countries.
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Affiliation(s)
- J C Palomino
- Mycobacteriology Unit, Institute of Tropical Medicine, Antwerp, Belgium.
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29
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Martin A, Portaels F, Palomino JC. Colorimetric redox-indicator methods for the rapid detection of multidrug resistance in Mycobacterium tuberculosis: a systematic review and meta-analysis. J Antimicrob Chemother 2006; 59:175-83. [PMID: 17135182 DOI: 10.1093/jac/dkl477] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVES With the spread of multidrug-resistant tuberculosis (MDR-TB) there is increasing demand for new accurate and cost-effective tools for rapid drug susceptibility testing (DST), particularly for developing countries. The reference standard method used today for DST is very slow and cumbersome. Colorimetric assays using redox indicators have been proposed to be used in low-resource countries as rapid alternative culture methods for the detection of resistance especially to rifampicin and isoniazid. These methods appear as promising new tools but their accuracy has not been systematically evaluated. METHODS We did a meta-analysis to evaluate the accuracy of the colorimetric assays for the detection of rifampicin and isoniazid-resistant tuberculosis among clinical isolates. We searched Medline, PubMed (NCBI), Global health-CAB, EJS-E (EbscoHost), ISI Web, Web of Science and IFCC databases and contacted authors if additional information was needed. RESULTS Eighteen studies met our inclusion criteria for rifampicin resistance detection and 16 for isoniazid. We used a summary receiver operating characteristic (SROC) curve to perform meta-analysis and summarize diagnostic accuracy. For both drugs, all studies had a sensitivity and specificity that ranged between 89% and 100%. CONCLUSIONS There is evidence that colorimetric methods are highly sensitive and specific for the rapid detection of MDR-TB. These new tools could offer affordable technologies for TB laboratories especially in places where resources are limited and where the prevalence of MDR-TB is important and make TB control efforts more effective. Additional studies are needed in high MDR prevalence countries and cost-effectiveness analysis to have more evidence on the utility of these methods. Future developments to detect resistance directly from smear-positive sputum specimens should be taken into consideration to speed up the process.
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Affiliation(s)
- Anandi Martin
- Mycobacteriology Unit, Institute of Tropical Medicine Nationalestraat 155, 2000 Antwerp, Belgium.
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