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Linhares LA, Dos Santos Peixoto A, Correia de Sousa LDA, Lucena Laet JP, da Silva Santos AC, Alves Pereira VR, Carneiro Neves MM, Ferreira LFGR, Hernandes MZ, de la Vega J, Pereira-Neves A, San Feliciano A, Olmo ED, Schindler HC, Montenegro LML. In vitro bioevaluation and docking study of dihydrosphingosine and ethambutol analogues against sensitive and multi-drug resistant Mycobacterium tuberculosis. Eur J Med Chem 2023; 258:115579. [PMID: 37399709 DOI: 10.1016/j.ejmech.2023.115579] [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: 02/14/2023] [Revised: 06/16/2023] [Accepted: 06/16/2023] [Indexed: 07/05/2023]
Abstract
Tuberculosis remains a major public health problem and one of the top ten causes of death worldwide. The alarming increase in multidrug-resistant and extensively resistant variants (MDR, pre-XDR, and XDR) makes the disease more difficult to treat and control. New drugs that act against MDR/XDR strains are needed for programs to contain this major epidemic. The present study aimed to evaluate new compounds related to dihydro-sphingosine and ethambutol against sensitive and pre-XDR Mycobacterium strains, as well as to characterize the pharmacological activity through in vitro and in silico approaches in mmpL3 protein. Of the 48 compounds analyzed, 11 demonstrated good to moderate activity on sensitive and MDR Mycobacterium tuberculosis (Mtb), with a Minimum Inhibitory Concentration (MIC) ranging from 1.5 to 8 μM. They presented 2 to 14 times greater potency of activity when compared to ethambutol in pre-XDR strain, and demonstrated a selectivity index varying between 2.21 and 82.17. The substance 12b when combined with rifampicin, showed a synergistic effect (FICI = 0.5) on sensitive and MDR Mtb. It has also been shown to have a concentration-dependent intracellular bactericidal effect, and a time-dependent bactericidal effect in M. smegmatis and pre-XDR M. tuberculosis. The binding mode of the compounds in its cavity was identified through molecular docking and using a predicted structural model of mmpL3. Finally, we observed by transmission electron microscopy the induction of damage to the cell wall integrity of M. tuberculosis treated with the substance 12b. With these findings, we demonstrate the potential of a 2-aminoalkanol derivative to be a prototype substance and candidate for further optimization of molecular structure and anti-tubercular activity in preclinical studies.
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Affiliation(s)
- Leonardo Aquino Linhares
- Department of Immunology, Aggeu Magalhães Institute (IAM), Oswaldo Cruz Foundation (FIOCRUZ), Recife, PE, 50.740-465, Brazil.
| | - Aline Dos Santos Peixoto
- Department of Immunology, Aggeu Magalhães Institute (IAM), Oswaldo Cruz Foundation (FIOCRUZ), Recife, PE, 50.740-465, Brazil
| | | | - João Paulo Lucena Laet
- Department of Immunology, Aggeu Magalhães Institute (IAM), Oswaldo Cruz Foundation (FIOCRUZ), Recife, PE, 50.740-465, Brazil
| | | | | | | | - Luiz Felipe Gomes Rebello Ferreira
- Laboratory of Medicinal Theoretical Chemistry (LQTM), Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, PE, Brazil
| | - Marcelo Zaldini Hernandes
- Laboratory of Medicinal Theoretical Chemistry (LQTM), Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, PE, Brazil
| | - Jennifer de la Vega
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy-CIETUS, University of Salamanca, Salamanca, Spain
| | - Antônio Pereira-Neves
- Aggeu Magalhães Institute (IAM), Oswaldo Cruz Foundation (FIOCRUZ), Recife, PE, 50.740-465, Brazil
| | - Arturo San Feliciano
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy-CIETUS, University of Salamanca, Salamanca, Spain; Graduate Program in Pharmaceutical Sciences, University of Vale do Itajai, UNIVALI, Itajaí, SC, 88302-202, Brazil
| | - Esther Del Olmo
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy-CIETUS, University of Salamanca, Salamanca, Spain
| | - Haiana Charifker Schindler
- Department of Immunology, Aggeu Magalhães Institute (IAM), Oswaldo Cruz Foundation (FIOCRUZ), Recife, PE, 50.740-465, Brazil
| | - Lílian Maria Lapa Montenegro
- Department of Immunology, Aggeu Magalhães Institute (IAM), Oswaldo Cruz Foundation (FIOCRUZ), Recife, PE, 50.740-465, Brazil.
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2
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Scioscia G, Lacedonia D, Giuffreda E, Caccavo I, Quarato CMI, Soccio P, Tondo P, Sassani EV, Pescatore D, Foschino Barbaro MP. Adaptive immunity in different CT patterns of active tuberculosis and possible variability according to patients' geographic provenience. Front Med (Lausanne) 2022; 9:890609. [PMID: 36160177 PMCID: PMC9489992 DOI: 10.3389/fmed.2022.890609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 08/15/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundIt is still unclear if low lymphocyte levels are directly related to immunological modifications induced by the TB infection or if they depend on the general pre-existing health impairment of affected patients. Our aim was to detect eventual differences in the immunological status of patients with pulmonary TB compared to an age and sex-matched group of hospitalized patients with other bacterial community-acquired pneumonia (CAP). In addition, we tried to assess an association between alterations in the peripheral lymphocyte subsets and the development of different CT patterns of active TB and to discover differences in the immunological status and in the radiological patterns of TB presentation between patients of different geographic proveniences.MethodsThis observational study included 48 patients with TB and 48 sex- and age-matched patients affected by other bacterial CAP. The presence of HIV/AIDS, other immunocompromising conditions, and confounding chronic pulmonary comorbidities was excluded. Flow cytometry was performed on all the enrolled subjects at admission, before starting the appropriate antibiotic therapy. Patients with TB also underwent a computed tomography (CT) scan.ResultsPatients with TB showed a decrease in the absolute count of all the lymphocyte subsets compared to the CAP group. Only the reduction in the percentage of CD4+ T-lymphocytes was significant, while the percentage of CD8+ T-lymphocytes was significantly increased. Patients presenting exudative forms with atypical locations of TB showed a significant reduction in the absolute count and percentage of CD19+ B-lymphocytes compared to those affected by productive TB forms with the typical location. Despite being younger, our black Sub-Saharan Africans showed a significant reduction in the CD4+ T-lymphocytes compartment and a higher prevalence of atypical and exudative forms of TB compared with white Europeans.ConclusionTuberculosis itself may alter peripheral blood lymphocyte subsets compared to other CAP. An impaired CD19+ B-lymphocyte compartment may result in an abnormal exudative response in atypical locations and a suboptimal bacterial control. Other constitutive or environmental causes may influence immunological differences found in patients with TB, particularly in case of different geographic origins. Anyhow, flow cytometry may be of great value in evaluating the immune function of these patients.
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Affiliation(s)
- Giulia Scioscia
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
- Institute of Respiratory Diseases, Policlinico Riuniti of Foggia, Foggia, Italy
| | - Donato Lacedonia
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
- Institute of Respiratory Diseases, Policlinico Riuniti of Foggia, Foggia, Italy
| | - Ernesto Giuffreda
- Institute of Respiratory Diseases, Policlinico Riuniti of Foggia, Foggia, Italy
| | - Incoronata Caccavo
- Internistic Department, Institute of Respiratory Disease, Azienda Ospedaliera Regionale San Carlo, Potenza, Italy
| | - Carla Maria Irene Quarato
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
- Institute of Respiratory Diseases, Policlinico Riuniti of Foggia, Foggia, Italy
- *Correspondence: Carla Maria Irene Quarato
| | - Piera Soccio
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Pasquale Tondo
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | | | - Dalila Pescatore
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Maria Pia Foschino Barbaro
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
- Institute of Respiratory Diseases, Policlinico Riuniti of Foggia, Foggia, Italy
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Kazakova O, Racoviceanu R, Petrova A, Mioc M, Militaru A, Udrescu L, Udrescu M, Voicu A, Cummings J, Robertson G, Ordway DJ, Slayden RA, Șoica C. New Investigations with Lupane Type A-Ring Azepane Triterpenoids for Antimycobacterial Drug Candidate Design. Int J Mol Sci 2021; 22:12542. [PMID: 34830423 PMCID: PMC8621456 DOI: 10.3390/ijms222212542] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 11/16/2021] [Accepted: 11/17/2021] [Indexed: 12/02/2022] Open
Abstract
Twenty lupane type A-ring azepano-triterpenoids were synthesized from betulin and its related derivatives and their antitubercular activity against Mycobacterium tuberculosis, mono-resistant MTB strains, and nontuberculous strains Mycobacterium abscessus and Mycobacterium avium were investigated in the framework of AToMIc (Anti-mycobacterial Target or Mechanism Identification Contract) realized by the Division of Microbiology and Infectious Diseases, NIAID, National Institute of Health. Of all the tested triterpenoids, 17 compounds showed antitubercular activity and 6 compounds were highly active on the H37Rv wild strain (with MIC 0.5 µM for compound 7), out of which 4 derivatives also emerged as highly active compounds on the three mono-resistant MTB strains. Molecular docking corroborated with a machine learning drug-drug similarity algorithm revealed that azepano-triterpenoids have a rifampicin-like antitubercular activity, with compound 7 scoring the highest as a potential M. tuberculosis RNAP potential inhibitor. FIC testing demonstrated an additive effect of compound 7 when combined with rifampin, isoniazid and ethambutol. Most compounds were highly active against M. avium with compound 14 recording the same MIC value as the control rifampicin (0.0625 µM). The antitubercular ex vivo effectiveness of the tested compounds on THP-1 infected macrophages is correlated with their increased cell permeability. The tested triterpenoids also exhibit low cytotoxicity and do not induce antibacterial resistance in MTB strains.
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Affiliation(s)
- Oxana Kazakova
- Ufa Institute of Chemistry, The Ufa Federal Research Centre, The Russian Academy of Sciences, 71, Pr. Oktyabrya, 450054 Ufa, Russia;
| | - Roxana Racoviceanu
- Department II-Pharmaceutical Chemistry, Faculty of Pharmacy, “Victor Babeş” University of Medicine and Pharmacy Timişoara, 2 Eftimie Murgu Sq., 300041 Timişoara, Romania; (R.R.); (M.M.); (C.Ș.)
- Res Ctr Pharmacotoxicol Evaluat, Faculty of Pharmacy, “Victor Babeş” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq. 2, 300041 Timisoara, Romania
| | - Anastasiya Petrova
- Ufa Institute of Chemistry, The Ufa Federal Research Centre, The Russian Academy of Sciences, 71, Pr. Oktyabrya, 450054 Ufa, Russia;
| | - Marius Mioc
- Department II-Pharmaceutical Chemistry, Faculty of Pharmacy, “Victor Babeş” University of Medicine and Pharmacy Timişoara, 2 Eftimie Murgu Sq., 300041 Timişoara, Romania; (R.R.); (M.M.); (C.Ș.)
- Res Ctr Pharmacotoxicol Evaluat, Faculty of Pharmacy, “Victor Babeş” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq. 2, 300041 Timisoara, Romania
| | - Adrian Militaru
- Department of Computer and Information Technology, University Politehnica of Timişoara, 2 Vasile Pârvan Blvd., 300223 Timişoara, Romania; (A.M.); (M.U.)
| | - Lucreția Udrescu
- Department I-Drug Analysis, Faculty of Pharmacy, “Victor Babeş” University of Medicine and Pharmacy Timişoara, 2 Eftimie Murgu Sq., 300041 Timişoara, Romania;
| | - Mihai Udrescu
- Department of Computer and Information Technology, University Politehnica of Timişoara, 2 Vasile Pârvan Blvd., 300223 Timişoara, Romania; (A.M.); (M.U.)
| | - Adrian Voicu
- Department III-Informatics and Medical Biostatistics, Faculty of Pharmacy, “Victor Babeş” University of Medicine and Pharmacy Timişoara, 2 Eftimie Murgu Sq., 300041 Timişoara, Romania
| | - Jason Cummings
- Department of Microbiology, Immunology & Pathology, Colorado State University, 1619 Campus Delivery, Fort Collins, CO 80523, USA; (J.C.); (G.R.); (D.J.O.); (R.A.S.)
| | - Gregory Robertson
- Department of Microbiology, Immunology & Pathology, Colorado State University, 1619 Campus Delivery, Fort Collins, CO 80523, USA; (J.C.); (G.R.); (D.J.O.); (R.A.S.)
| | - Diane J. Ordway
- Department of Microbiology, Immunology & Pathology, Colorado State University, 1619 Campus Delivery, Fort Collins, CO 80523, USA; (J.C.); (G.R.); (D.J.O.); (R.A.S.)
| | - Richard A. Slayden
- Department of Microbiology, Immunology & Pathology, Colorado State University, 1619 Campus Delivery, Fort Collins, CO 80523, USA; (J.C.); (G.R.); (D.J.O.); (R.A.S.)
| | - Codruța Șoica
- Department II-Pharmaceutical Chemistry, Faculty of Pharmacy, “Victor Babeş” University of Medicine and Pharmacy Timişoara, 2 Eftimie Murgu Sq., 300041 Timişoara, Romania; (R.R.); (M.M.); (C.Ș.)
- Res Ctr Pharmacotoxicol Evaluat, Faculty of Pharmacy, “Victor Babeş” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Sq. 2, 300041 Timisoara, Romania
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Ali S, Ehtram A, Arora N, Manjunath P, Roy D, Ehtesham NZ, Hasnain SE. The M. tuberculosis Rv1523 Methyltransferase Promotes Drug Resistance Through Methylation-Mediated Cell Wall Remodeling and Modulates Macrophages Immune Responses. Front Cell Infect Microbiol 2021; 11:622487. [PMID: 33777836 PMCID: PMC7994892 DOI: 10.3389/fcimb.2021.622487] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 01/25/2021] [Indexed: 12/17/2022] Open
Abstract
The acquisition of antibiotics resistance is a major clinical challenge limiting the effective prevention and treatment of the deadliest human infectious disease tuberculosis. The molecular mechanisms by which initially Mycobacterium tuberculosis (M.tb) develop drug resistance remain poorly understood. In this study, we report the novel role of M.tb Rv1523 MTase in the methylation of mycobacterial cell envelope lipids and possible mechanism of its contribution in the virulence and drug resistance. Initial interactome analyses predicted association of Rv1523 with proteins related to fatty acid biosynthetic pathways. This promoted us to investigate methylation activity of Rv1523 using cell wall fatty acids or lipids as a substrate. Rv1523 catalyzed the transfer of methyl group from SAM to the cell wall components of mycobacterium. To investigate further the in vivo methylating role of Rv1523, we generated a recombinant Mycobacterium smegmatis strain that expressed the Rv1523 gene. The M. smegmatis strain expressing Rv1523 exhibited altered cell wall lipid composition, leading to an increased survival under surface stress, acidic condition and resistance to antibiotics. Macrophages infected with recombinant M. smegmatis induced necrotic cell death and modulated the host immune responses. In summary, these findings reveal a hitherto unknown role of Rv1523 encoded MTase in cell wall remodeling and modulation of immune responses. Functional gain of mycolic acid Rv1523 methyltransferase induced virulence and resistance to antibiotics in M. smegmatis. Thus, mycolic acid methyltransferase may serve as an excellent target for the discovery and development of novel anti-TB agents.
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Affiliation(s)
- Sabeeha Ali
- Molecular Infection and Functional Biology Lab, Kusuma School of Biological Sciences, Indian Institute of Technology, New Delhi, India
| | - Aquib Ehtram
- Molecular Infection and Functional Biology Lab, Kusuma School of Biological Sciences, Indian Institute of Technology, New Delhi, India
| | - Naresh Arora
- JH Institute of Molecular Medicine, Jamia Hamdard, New Delhi, India
| | - P Manjunath
- JH Institute of Molecular Medicine, Jamia Hamdard, New Delhi, India.,National Institute of Pathology, Safdarjung Hospital Campus, New Delhi, India
| | - Deodutta Roy
- JH Institute of Molecular Medicine, Jamia Hamdard, New Delhi, India
| | - Nasreen Z Ehtesham
- National Institute of Pathology, Safdarjung Hospital Campus, New Delhi, India
| | - Seyed E Hasnain
- JH Institute of Molecular Medicine, Jamia Hamdard, New Delhi, India.,Dr Reddy's Institute of Life Sciences, University of Hyderabad Campus, Hyderabad, India.,Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology, New Delhi, India
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5
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Mohammadpour R, Champour M, Tuteja F, Mostafavi E. Zoonotic implications of camel diseases in Iran. Vet Med Sci 2020; 6:359-381. [PMID: 32160657 PMCID: PMC7397890 DOI: 10.1002/vms3.239] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 05/28/2019] [Accepted: 07/07/2019] [Indexed: 12/31/2022] Open
Abstract
Approximately 60% of all human pathogens and 75% of emerging infectious diseases are zoonotic (of animal origin). Camel zoonotic diseases can be encountered in all camel-rearing countries. In this article, all studies carried out on camel zoonotic diseases in Iran are reviewed to show the importance of camels for public health in this country. More than 900 published documents were systematically searched to find relevant studies from 1,890 until late 2018. The collected articles were classified according to the aetiological agents. In this study, 19 important zoonotic diseases were reported among Iranian camels including listeriosis, leptospirosis, plague, Q fever, brucellosis, campylobacteriosis, tuberculosis, pasteurellosis, clostridiosis, salmonellosis, Escherichia coli infections, rabies, camelpox, Middle East respiratory syndrome coronavirus, Crimean-Congo haemorrhagic fever, echinococcosis, cryptosporidiosis, toxoplasmosis and dermatophytosis, most of which belong to bacterial, viral, parasitic and fungal pathogens, respectively. Results show that camels are one of the most important sources of infections and diseases in human; therefore, continuous monitoring and inspection programs are necessary to prevent the outbreak of zoonotic diseases caused by this animal in humans.
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Affiliation(s)
- Roya Mohammadpour
- Department of Epidemiology and BiostatisticsResearch Centre for Emerging and Reemerging infectious diseasesPasteur Institute of IranTehranIran
| | - Mohsen Champour
- Department of Clinical SciencesSchool of Veterinary MedicineFerdowsi University of MashhadMashhadIran
| | - Fateh Tuteja
- National Research Centre on CamelBikanerRajasthanIndia
| | - Ehsan Mostafavi
- Department of Epidemiology and BiostatisticsResearch Centre for Emerging and Reemerging infectious diseasesPasteur Institute of IranTehranIran
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Khare SV, Choudhari SP, Phalle SP, Kumbhar SS, Choudhari PB, Masal SR, Patil AK, Dhavale RP, Bhagwat DA, Kadam AM. Optimization of Thiazolidone Scaffolds Using Pocket Modeling for Development of Potential Secretory System Inhibitors of Mycobacterium tuberculosis. Turk J Pharm Sci 2020; 16:196-205. [PMID: 32454714 DOI: 10.4274/tjps.galenos.2018.12599] [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: 02/10/2018] [Accepted: 03/22/2018] [Indexed: 12/01/2022]
Abstract
Objectives Mycobacterium tuberculosis is the causative organism of tuberculosis, which is the most lethal disease after cancer in the current decade. The development of multidrug and broadly drug-resistant strains is making the problem of tuberculosis more and more critical. In the last 40 years, only one molecule has been added to the treatment regimen. Generally, drug design and development programs target proteins whose function is known to be essential to the bacterial cell. M. tuberculosis possesses specialized protein export systems like the SecA2 export pathway and ESX pathways. Materials and Methods In the present communication, rational development of an antimycobacterial agent's targeting protein export system was carried out by integrating pocket modeling and virtual analysis. Results The 23 identified potential lead compounds were synthesized, characterized by physicochemical and spectroscopic methods like infrared and nuclear magnetic resonance spectroscopy, and further screened for antimycobacterial activity using isoniazid as standard. All the designed compounds showed profound antimycobacterial activity. Conclusion We found that Q30, M9, M26, U8, and R26 molecules had significant desirable biological activity and specific interactions with Sec of mycobacteria. Further optimization of these leads is necessary for the development of potential antimycobacterial drug candidates with fewer side effects.
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Affiliation(s)
- Shivratna V Khare
- Bharati Vidyapeeth College of Pharmacy, Department of Pharmaceutical Chemistry, Computational Chemistry Research Lab, Kolhapur, India
| | - Sujata P Choudhari
- Sarojini College of Pharmacy, Department of Pharmaceutical Analysis, Kolhapur, India
| | - Siddharth P Phalle
- Bharati Vidyapeeth College of Pharmacy, Department of Pharmaceutical Chemistry, Computational Chemistry Research Lab, Kolhapur, India
| | - Santosh S Kumbhar
- Bharati Vidyapeeth College of Pharmacy, Department of Pharmaceutical Chemistry, Computational Chemistry Research Lab, Kolhapur, India
| | - Prafulla B Choudhari
- Bharati Vidyapeeth College of Pharmacy, Department of Pharmaceutical Chemistry, Computational Chemistry Research Lab, Kolhapur, India
| | - Sambhaji R Masal
- Bharati Vidyapeeth College of Pharmacy, Department of Pharmaceutical Chemistry, Computational Chemistry Research Lab, Kolhapur, India
| | - Aakash K Patil
- Bharati Vidyapeeth College of Pharmacy, Department of Pharmaceutical Chemistry, Computational Chemistry Research Lab, Kolhapur, India
| | - Rakesh P Dhavale
- Bharati Vidyapeeth College of Pharmacy, Department of Pharmaceutics, Kolhapur, India
| | - Durgacharan A Bhagwat
- Bharati Vidyapeeth College of Pharmacy, Department of Pharmaceutics, Kolhapur, India
| | - Atul M Kadam
- Shree Santkrupa College of Pharmacy, Department of Pharmaceutics, Ghogaon, India
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7
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Maeda R, Ito T, Tagami T, Takii T, Ozeki T. Development of Dried Emulsion/Mannitol Composite Microparticles through a Unique Spray Nozzle for Efficient Delivery of Hydrophilic Anti-tuberculosis Drug against Alveolar Macrophages. Biol Pharm Bull 2020; 42:1846-1853. [PMID: 31685768 DOI: 10.1248/bpb.b19-00368] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
As alveolar macrophages are attractive targets for the treatment of tuberculosis, effective methods for delivery to alveolar macrophages are under development. We investigated a pulmonary formulation for the efficient delivery of high water-soluble drugs at high concentration targeting alveolar macrophages. In this study, a surfactant-coated high water-soluble drug complex (SDC, a hydrophobic dried emulsion), which can preferably target alveolar macrophages and be expected to deliver drug at a high concentration, was prepared in the first process. OCT313, a high water-soluble sugar derivative with anti-tuberculosis activity was used. Then, a unique two-solution, mixing-type nozzle was used to prepare the SDC nanoparticles in mannitol (MAN) microparticles (SDC/MAN microparticles) because it was difficult to disperse the SDC nanoparticles in aqueous solution. The single micron size of OCT313-SDC/MAN microparticles contained OCT313-SDC nanoparticles (mean particle size of OCT313-SDC nanoparticles, 277.9 nm; drug contents, 1.31 ± 0.041 wt%). We found that the treatment of SDC/MAN microparticles exhibited significantly higher drug accumulation in macrophage cells (Raw264.7 cells, 7.5-fold, at 4 h after treatment) in vitro and in alveolar macrophages in rats (9.1-fold, at 4 h after treatment) in vivo than that of drug alone. These results suggest that the SDC/MAN microparticle formulation prepared by spray drying through a two-solution mixing-type nozzle provides efficient delivery of a water-soluble drug targeting alveolar macrophages and may be useful for tuberculosis treatment.
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Affiliation(s)
- Ryo Maeda
- Drug Delivery and Nano Pharmaceutics, Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Tatsuya Ito
- Drug Delivery and Nano Pharmaceutics, Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Tatsuaki Tagami
- Drug Delivery and Nano Pharmaceutics, Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Takemasa Takii
- Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University.,Department of Mycobacterium Reference and Research, Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association
| | - Tetsuya Ozeki
- Drug Delivery and Nano Pharmaceutics, Graduate School of Pharmaceutical Sciences, Nagoya City University
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8
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Amalakanti S. Skin manifestations of malnutrition in HIV-positive meningitis patients. BIOMEDICAL DERMATOLOGY 2020. [DOI: 10.1186/s41702-020-0060-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Abstract
Background
HIV infection and meningitis are diseases which are known to precipitate malnutrition. Skin manifestations of malnutrition are easy to identify. We tried to describe the skin manifestations of malnutrition in HIV-positive patients with meningitis.
Setting
Patients included in the study were from a tertiary referral hospital in South India.
Methods
In a cross-sectional observational design, we studied 56 adult [> 14 years] HIV-seropositive patients with meningitis by clinical assessment of skin manifestations of malnutrition.
Results
Skin wasting (31.5%), hyperpigmentation of skin (22.2%) and skin ulceration (16.4%) were the chief skin manifestations of malnutrition in HIV-positive patients with meningitis.
Conclusions
Our study shows that certain cutaneous features of malnutrition like skin ulcers, skin wasting and hypo pigmentation are common in HIV patients with meningitis.
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9
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Mycobacterium tuberculosis Shikimate Pathway Enzymes as Targets for the Rational Design of Anti-Tuberculosis Drugs. Molecules 2020; 25:molecules25061259. [PMID: 32168746 PMCID: PMC7144000 DOI: 10.3390/molecules25061259] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 02/06/2020] [Accepted: 02/10/2020] [Indexed: 12/17/2022] Open
Abstract
Roughly a third of the world’s population is estimated to have latent Mycobacterium tuberculosis infection, being at risk of developing active tuberculosis (TB) during their lifetime. Given the inefficacy of prophylactic measures and the increase of drug-resistant M. tuberculosis strains, there is a clear and urgent need for the development of new and more efficient chemotherapeutic agents, with selective toxicity, to be implemented on patient treatment. The component enzymes of the shikimate pathway, which is essential in mycobacteria and absent in humans, stand as attractive and potential targets for the development of new drugs to treat TB. This review gives an update on published work on the enzymes of the shikimate pathway and some insight on what can be potentially explored towards selective drug development.
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10
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Garfein RS, Doshi RP. Synchronous and asynchronous video observed therapy (VOT) for tuberculosis treatment adherence monitoring and support. J Clin Tuberc Other Mycobact Dis 2019; 17:100098. [PMID: 31867442 PMCID: PMC6904830 DOI: 10.1016/j.jctube.2019.100098] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Directly observed therapy (DOT) for monitoring tuberculosis (TB) treatment is intended to reduce disease transmission, mortality and acquired drug resistance by facilitating treatment adherence and support. Synchronous (S-VOT) and asynchronous (A-VOT) video observed therapy are mHealth solutions for remotely monitoring medication ingestion. This paper synthesizes literature through December 2018 to describe existing VOT approaches, summarize evidence, identify knowledge gaps, evaluate VOT strengths and weaknesses, and examine patient and provider factors influencing VOT feasibility and acceptability. High rates of adherence and patient acceptance were obtained using both VOT methods. VOT reduced travel time for TB program staff and/or patients, improving program efficiency compared to in-person DOT while maintaining high patient satisfaction. The impact of VOT on TB treatment outcomes, such as cure and relapse, require further study with longer follow-up. Individual patient, provider and program factors should be considered in selecting either or both VOT approaches for provision of patient-centered care.
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Affiliation(s)
- Richard S. Garfein
- Division of Epidemiology, School of Medicine, University of California San Diego, 9500 Gilman Drive, Mailcode-0725, La Jolla, CA 92093-0725, USA
| | - Riddhi P. Doshi
- Division of Behavioral Sciences and Community Health, School of Dental Medicine, University of Connecticut Health Center, 263 Farmington Avenue, MC 6030, Farmington, CT 06030, USA
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11
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Taghipour A, Mosadegh M, Kheirollahzadeh F, Olfatifar M, Safari H, Nasiri MJ, Fathi A, Badri M, Piri Dogaheh H, Azimi T. Are intestinal helminths playing a positive role in tuberculosis risk? A systematic review and meta-analysis. PLoS One 2019; 14:e0223722. [PMID: 31613921 PMCID: PMC6793940 DOI: 10.1371/journal.pone.0223722] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 09/26/2019] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Co-infection of intestinal helminthic infections (IHIs) and tuberculosis (TB) has appeared as a public health issue, especially in developing countries. Some recent studies have been carried out on the possible relevance of IHIs to TB. The current systematic review and meta-analysis was conducted to assess the prevalence and odds ratio (OR) of IHIs among TB patients and clarify the relationship between IHIs and TB disease. METHODS For the purpose of the study, five English databases including PubMed, Science Direct, Scopus, Web of Science (ISI), and Google scholar were searched (up to January 30, 2019) in order to find the related studies. Random-effects meta-analysis model was used to estimate the pooled prevalence, odds ratio (OR), and 95% confidence interval (CI). Inclusion and exclusion criteria were applied. RESULTS A total of 20 studies including 10 studies with case-control design (2217 patients and 2520 controls) and 10 studies with cross-sectional design (a total of 2415 participants) met the eligibility criteria. As shown by the random-effects model, the pooled prevalence of IHIs in TB patients was estimated to be 26% (95% CI, 17-35%; 1249/4632). The risk of IHI was higher in TB patients compared to controls but this was not statistically significant. However, according to genus/species, the pooled OR of Strongyloides stercoralis (S. stercoralis) (OR, 2.68; 95% CI, 1.59-4.54) had a significantly higher risk in TB patients compared to controls. Nevertheless, the results of random effects model showed no statistically significant association between overall pooled OR of IHIs in TB patients compared to controls in case-control studies (OR, 1; 95% CI, 0-1). CONCLUSIONS It is highly recommended that more precise studies should be carried out by researchers in order to better understand this association. Also, it is of great importance to include the periodic screenings for IHIs in the routine clinical care of these patients.
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Affiliation(s)
- Ali Taghipour
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mehrdad Mosadegh
- Department of Pathobiology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Kheirollahzadeh
- Biology Department, School of Basic Science, Science and Research Branch Islamic Azad University (SRBIAU), Poonak, Tehran, Iran
| | - Meysam Olfatifar
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hossein Safari
- Health Promotion Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Javad Nasiri
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Atefeh Fathi
- Faculty of veterinary medicine, University of Zabol, Zabol, Iran
| | - Milad Badri
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Hadi Piri Dogaheh
- Department of Microbiology, School of Medicine, Ardabil University of Medical Science, Ardabil, Iran
| | - Taher Azimi
- Department of Pathobiology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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12
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Olalekan AW, Oluwaseun FA, Oladele HAW, Akeem AD. Evaluation of electrolyte imbalance among tuberculosis patients receiving treatments in Southwestern Nigeria. ALEXANDRIA JOURNAL OF MEDICINE 2019. [DOI: 10.1016/j.ajme.2014.10.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Adebimpe Wasiu Olalekan
- Department of Community Medicine, College of Health Sciences, Osun State University Osogbo, Osun State, Nigeria
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13
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Genetic polymorphism in association with susceptibility to tuberculosis: a study in a Pakistani population. Braz J Microbiol 2019; 50:429-434. [PMID: 30805894 DOI: 10.1007/s42770-019-00048-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 12/17/2018] [Indexed: 10/27/2022] Open
Abstract
Tuberculosis is becoming a global issue with raising occurrences; particularly in developing countries, the situation is alarming. Besides environmental factors, host genetic factors are vital in disease development. A demographical and genotypic analysis in relation to tuberculosis commencement is conducted in a Pakistani population, and genotypic frequency of EBI3 (rs4740) was analyzed. Allelic frequencies of EBI3 (rs4740) were significantly associated with disease susceptibility in the reviewed population. Analysis for EBI3 (rs4740) genotyping showed a significant association of "GG" with reduced risk for disease. Moreover, females and older age found to be more perilous to develop TB while smoking and a family history of TB are additional risk factors for disease development. Further work with a larger population is necessary to identify the true causative variants of tuberculosis.
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14
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Hussain A, Singh S, Das SS, Anjireddy K, Karpagam S, Shakeel F. Nanomedicines as Drug Delivery Carriers of Anti-Tubercular Drugs: From Pathogenesis to Infection Control. Curr Drug Deliv 2019; 16:400-429. [PMID: 30714523 PMCID: PMC6637229 DOI: 10.2174/1567201816666190201144815] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 12/23/2018] [Accepted: 01/25/2019] [Indexed: 11/22/2022]
Abstract
In spite of advances in tuberculosis (TB) chemotherapy, TB is still airborne deadly disorder as a major issue of health concern worldwide today. Extensive researches have been focused to develop novel drug delivery systems to shorten the lengthy therapy approaches, prevention of relapses, reducing dose-related toxicities and to rectify technologically related drawbacks of anti-tubercular drugs. Moreover, the rapid emergence of drug resistance, poor patient compliance due to negative therapeutic outcomes and intracellular survival of Mycobacterium highlighted to develop carrier with optimum effectiveness of the anti-tubercular drugs. This could be achieved by targeting and concentrating the drug on the infection reservoir of Mycobacterium. In this article, we briefly compiled the general aspects of Mycobacterium pathogenesis, disease treatment along with progressive updates in novel drug delivery carrier system to enhance therapeutic effects of drug and the high level of patient compliance. Recently developed several vaccines might be shortly available as reported by WHO.
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Affiliation(s)
| | | | | | | | | | - Faiyaz Shakeel
- Address correspondence to this author at the Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia; Tel: +966-14673139; E-mail:
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15
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Wu YJ, Yang X, Chen TD, Zhang ZX, You YZ, Fan ZD. Genetic polymorphisms of exon 1 of MBL2 contribute to tuberculosis risk especially in Asian populations: an updated meta-analysis of 26 studies. Infect Drug Resist 2018; 11:1237-1248. [PMID: 30154670 PMCID: PMC6108403 DOI: 10.2147/idr.s168465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Background Evidence suggests that genetic variations of exon 1 of mannose-binding lectin 2 (MBL2) may contribute to tuberculosis (TB) risk. Many studies have investigated the association between MBL2 exon 1 polymorphisms (rs1800450, rs1800451, and rs5030737) and TB risk, but yielded inconclusive results. Method We conducted this meta-analysis of 26 eligible case–control studies that included 7952 cases and 9328 controls to identify the strength of association. Odds ratio (OR) and 95% CI were used to evaluate the strength of association. Statistical analyses were performed by using STATA 12.1. Results We found a statistically significant correlation between MBL2 exon 1 polymorphisms and increased TB risk among three models: allele model (O vs A: OR =1.18, 95% CI: 1.01–1.38, Pheterogeneity<0.0001, I2=85.8%), homozygote comparison (OO vs AA: OR =1.49, 95%CI: 1.02–2.18, Pheterogeneity<0.0001, I2=79.1%), dominant model (AO/OO vs AA: OR =1.20, 95% CI: 1.01–1.43, Pheterogeneity<0.0001, I2=83.5%), especially in studies based on Asian populations among five models: allele model (O vs A: OR =1.29, 95% CI: 1.11–1.51, Pheterogeneity<0.0001, I2=66.0%), homozygote comparison (OO vs AA: OR =1.67, 95% CI: 1.09–2.55, Pheterogeneity=0.008, I2=54.2%), heterozygote comparison (AO vs AA: OR =1.26, 95% CI: 1.05–1.50, Pheterogeneity=0.001, I2=62.9%), dominant model (AO/OO vs. AA: OR =1.31, 95% CI: 1.10–1.56, Pheterogeneity=0.001, I2=64.2%), and recessive model (OO vs AO/AA: OR =1.50, 95% CI: 1.01–2.22, Pheterogeneity=0.023, I2=48.0%). Meta-regression results revealed that source of controls (p=0.009), but not ethnicity (p=0.687), genotyping method (p=0.231), and sample size (p=0.451) contributed to the source of heterogeneity. Conclusion This meta-analysis suggests that MBL2 exon 1 polymorphisms may contribute to TB risk, especially in Asian populations.
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Affiliation(s)
- Yu-Jiao Wu
- Department of Pharmacy, The Third People's Hospital, Changzhou, China,
| | - Xin Yang
- Department of Oncology, The Third Affiliated Hospital of Soochow University, Changzhou, China,
| | - Ting-di Chen
- Department of Science and Education, The Third People's Hospital, Changzhou, China
| | - Zhi-Xin Zhang
- Department of Pulmonary Tuberculosis, The Third People's Hospital, Changzhou, China
| | - Yi-Zhong You
- Department of Pharmacy, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Zheng-da Fan
- Department of Pharmacy, The Third People's Hospital, Changzhou, China,
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16
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Mishra A, Surolia A. Mycobacterium tuberculosis: Surviving and Indulging in an Unwelcoming Host. IUBMB Life 2018; 70:917-925. [DOI: 10.1002/iub.1882] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/02/2018] [Accepted: 05/04/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Archita Mishra
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore, Karnataka, India 560012
| | - Avadhesha Surolia
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore, Karnataka, India 560012
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17
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Mewada NS, Shah DR, Lakum HP, Chikhalia KH. Synthesis and biological evaluation of novel s-triazine based aryl/heteroaryl entities: Design, rationale and comparative study. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.jaubas.2014.08.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nirali S. Mewada
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat India
| | - Dhruvin R. Shah
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat India
| | - Harshad P. Lakum
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat India
| | - Kishor H. Chikhalia
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat India
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18
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Li H, Wei S, Fang Y, Li M, Li X, Li Z, Zhang J, Zhu G, Li C, Bi L, Zhang G, Wang D, Zhang XE. Quantitative proteomic analysis of host responses triggered by Mycobacterium tuberculosis infection in human macrophage cells. Acta Biochim Biophys Sin (Shanghai) 2017; 49:835-844. [PMID: 28910983 DOI: 10.1093/abbs/gmx080] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Indexed: 02/03/2023] Open
Abstract
Macrophages are primary host of Mycobacterium tuberculosis (M.tb) and the central effector of in vivo innate immune responses against bacteria. Though the interaction between macrophages and mycobacteria has been widely investigated, the molecular mechanisms of M.tb pathogenesis in macrophages are still not clear. In this work, we investigated the altered protein expression profiles of macrophages after virulent H37Rv strain and avirulent H37Ra strain infection by tandem mass tag-based quantitative proteomics. Among 6762 identified proteins of macrophages, the expression levels of 235 proteins were significantly altered, which is supposed to be related to the infection of different strains. By bioinformatics analysis at systems level, we found that these proteins are mainly involved in the biological process of apoptosis, blood coagulation, oxidative phosphorylation, and others. The enormous variation in protein profiles between macrophages infected with H37Ra and H37Rv suggests the existence of four different immunity mechanisms that decide the fates of macrophages and M.tb. These data may provide a better understanding of M.tb pathogenesis within the host, which contributes to the prevention and clinical treatment of tuberculosis.
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19
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Mishra SK, Tripathi G, Kishore N, Singh RK, Singh A, Tiwari VK. Drug development against tuberculosis: Impact of alkaloids. Eur J Med Chem 2017. [DOI: 10.1016/j.ejmech.2017.06.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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20
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Abstract
Mycobacterium leprae must adopt a metabolic strategy and undergo various metabolic alterations upon infection to survive inside the human body for years in a dormant state. A change in lipid homeostasis upon infection is highly pronounced in Mycobacterium leprae. Lipids play an essential role in the survival and pathogenesis of mycobacteria. Lipids are present in several forms and serve multiple roles from being a source of nutrition, providing rigidity, evading the host immune response to serving as virulence factors, etc. The synthesis and degradation of lipids is a highly regulated process and is the key to future drug designing and diagnosis for mycobacteria. In the current review, an account of the distinct roles served by lipids, the mechanism of their synthesis and degradation has been elucidated.
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Affiliation(s)
- Gurkamaljit Kaur
- Research Scholar, Department of Biotechnology, Panjab University, Chandigarh 160014, India
| | - Jagdeep Kaur
- Department of Biotechnology, Panjab University, Chandigarh 160014, India
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21
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Lentz F, Hemmer M, Reiling N, Hilgeroth A. Discovery of novel N- phenyl 1,4-dihydropyridines with a dual mode of antimycobacterial activity. Bioorg Med Chem Lett 2016; 26:5896-5898. [DOI: 10.1016/j.bmcl.2016.11.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 11/03/2016] [Accepted: 11/04/2016] [Indexed: 01/14/2023]
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22
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Areeshi MY, Mandal RK, Akhter N, Dar SA, Jawed A, Wahid M, Mahto H, Panda AK, Lohani M, Haque S. A Meta-analysis of MBL2 Polymorphisms and Tuberculosis Risk. Sci Rep 2016; 6:35728. [PMID: 27876780 PMCID: PMC5120291 DOI: 10.1038/srep35728] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 10/03/2016] [Indexed: 01/11/2023] Open
Abstract
MBL2 gene encodes mannose-binding lectin, is a member of innate immune system. Earlier studies revealed that MBL2 gene variants, rs1800451, rs1800450, rs5030737, rs7096206, rs11003125 and rs7095891 are associated with impaired serum level and susceptibility to TB, but their results are inconsistent. A meta-analysis was performed by including 22 studies (7095 TB-patients and 7662 controls) and data were analyzed with respect to associations between alleles, genotypes and minor allele carriers to evaluate the potential association between MBL2 polymorphisms and TB risk. Statistically significant results were found only for the homozygous variant genotype (CC vs. AA: p = 0.045; OR = 0.834, 95% CI = 0.699 to 0.996) of rs1800451 and showed reduced risk of TB in overall population. However, other genetic models of rs1800450, rs5030737, rs7096206, rs11003125, rs7095891 and combined rs1800450, rs1800451, rs5030737 polymorphisms of MBL2 gene did not reveal any association with TB risk. Stratified analysis by ethnicity showed decreased risk of TB in African population for rs1800450 and rs1800451. Whereas, no association was observed between other MBL2 polymorphisms and TB risk in all the evaluated ethnic populations. In conclusion, MBL2 rs1800450 and rs1800451 polymorphisms play a protective role in TB infection and reinforce their critical significance as a potential genetic marker for TB resistance.
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Affiliation(s)
- Mohammed Y Areeshi
- Research and Scientific Studies Unit, College of Nursing &Allied Health Sciences, Jazan University, Jazan-45142, Saudi Arabia
| | - Raju K Mandal
- Research and Scientific Studies Unit, College of Nursing &Allied Health Sciences, Jazan University, Jazan-45142, Saudi Arabia
| | - Naseem Akhter
- Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Albaha University, Albaha-65431, Saudi Arabia
| | - Sajad A Dar
- Research and Scientific Studies Unit, College of Nursing &Allied Health Sciences, Jazan University, Jazan-45142, Saudi Arabia.,The University College of Medical Sciences >B Hospital (University of Delhi), Delhi-110095, India
| | - Arshad Jawed
- Research and Scientific Studies Unit, College of Nursing &Allied Health Sciences, Jazan University, Jazan-45142, Saudi Arabia
| | - Mohd Wahid
- Research and Scientific Studies Unit, College of Nursing &Allied Health Sciences, Jazan University, Jazan-45142, Saudi Arabia
| | - Harishankar Mahto
- Centre for Life Sciences, Central University of Jharkhand, Ranchi-835205, Jharkhand, India
| | - Aditya K Panda
- Centre for Life Sciences, Central University of Jharkhand, Ranchi-835205, Jharkhand, India
| | - Mohtashim Lohani
- Research and Scientific Studies Unit, College of Nursing &Allied Health Sciences, Jazan University, Jazan-45142, Saudi Arabia.,Department of Biosciences, Integral University, Lucknow-226026, Uttar Pradesh, India
| | - Shafiul Haque
- Research and Scientific Studies Unit, College of Nursing &Allied Health Sciences, Jazan University, Jazan-45142, Saudi Arabia.,Department of Biosciences, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), New Delhi-110025, India
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23
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Pitta E, Rogacki MK, Balabon O, Huss S, Cunningham F, Lopez-Roman EM, Joossens J, Augustyns K, Ballell L, Bates RH, Van der Veken P. Searching for New Leads for Tuberculosis: Design, Synthesis, and Biological Evaluation of Novel 2-Quinolin-4-yloxyacetamides. J Med Chem 2016; 59:6709-28. [DOI: 10.1021/acs.jmedchem.6b00245] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Eleni Pitta
- Medicinal
Chemistry, Department of Pharmaceutical Sciences, University of Antwerp, Universitieitsplein 1, B-2610 Wilrijk, Belgium
- Diseases
of the Developing World (DDW), Tres Cantos Medicines Development Campus
(TCMDC), GlaxoSmithKline, Severo Ochoa 2, 28760 Tres Cantos Madrid, Spain
| | - Maciej K. Rogacki
- Medicinal
Chemistry, Department of Pharmaceutical Sciences, University of Antwerp, Universitieitsplein 1, B-2610 Wilrijk, Belgium
- Diseases
of the Developing World (DDW), Tres Cantos Medicines Development Campus
(TCMDC), GlaxoSmithKline, Severo Ochoa 2, 28760 Tres Cantos Madrid, Spain
| | - Olga Balabon
- Medicinal
Chemistry, Department of Pharmaceutical Sciences, University of Antwerp, Universitieitsplein 1, B-2610 Wilrijk, Belgium
- Diseases
of the Developing World (DDW), Tres Cantos Medicines Development Campus
(TCMDC), GlaxoSmithKline, Severo Ochoa 2, 28760 Tres Cantos Madrid, Spain
| | - Sophie Huss
- Diseases
of the Developing World (DDW), Tres Cantos Medicines Development Campus
(TCMDC), GlaxoSmithKline, Severo Ochoa 2, 28760 Tres Cantos Madrid, Spain
| | - Fraser Cunningham
- Diseases
of the Developing World (DDW), Tres Cantos Medicines Development Campus
(TCMDC), GlaxoSmithKline, Severo Ochoa 2, 28760 Tres Cantos Madrid, Spain
| | - Eva Maria Lopez-Roman
- Diseases
of the Developing World (DDW), Tres Cantos Medicines Development Campus
(TCMDC), GlaxoSmithKline, Severo Ochoa 2, 28760 Tres Cantos Madrid, Spain
| | - Jurgen Joossens
- Medicinal
Chemistry, Department of Pharmaceutical Sciences, University of Antwerp, Universitieitsplein 1, B-2610 Wilrijk, Belgium
| | - Koen Augustyns
- Medicinal
Chemistry, Department of Pharmaceutical Sciences, University of Antwerp, Universitieitsplein 1, B-2610 Wilrijk, Belgium
| | - Lluis Ballell
- Diseases
of the Developing World (DDW), Tres Cantos Medicines Development Campus
(TCMDC), GlaxoSmithKline, Severo Ochoa 2, 28760 Tres Cantos Madrid, Spain
| | - Robert H. Bates
- Diseases
of the Developing World (DDW), Tres Cantos Medicines Development Campus
(TCMDC), GlaxoSmithKline, Severo Ochoa 2, 28760 Tres Cantos Madrid, Spain
| | - Pieter Van der Veken
- Medicinal
Chemistry, Department of Pharmaceutical Sciences, University of Antwerp, Universitieitsplein 1, B-2610 Wilrijk, Belgium
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24
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Guan YF, Song X, Qiu MH, Luo SH, Wang BJ, Van Hung N, Cuong NM, Soejarto DD, Fong HH, Franzblau SG, Li SH, He ZD, Zhang HJ. Bioassay-Guided Isolation and Structural Modification of the Anti-TB Resorcinols fromArdisia gigantifolia. Chem Biol Drug Des 2016; 88:293-301. [PMID: 26992112 DOI: 10.1111/cbdd.12756] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Revised: 02/23/2016] [Accepted: 03/04/2016] [Indexed: 11/28/2022]
Affiliation(s)
- Yi-Fu Guan
- School of Chinese Medicine; Hong Kong Baptist University; Hong Kong SAR China
- HKBU Institute of Research and Continuing Education; Shenzhen 518057 China
| | - Xun Song
- School of Chinese Medicine; Hong Kong Baptist University; Hong Kong SAR China
- Department of Pharmacy; School of Medicine; Key Laboratory of Novel Health Care Products; Engineering Laboratory of Shenzhen Natural small molecule Innovative Drugs; Shenzhen University; Shenzhen 518060 China
| | - Ming-Hua Qiu
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences; Kunming 650201 Yunnan China
| | - Shi-Hong Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences; Kunming 650201 Yunnan China
| | - Bao-Jie Wang
- Institute for Tuberculosis Research; College of Pharmacy; University of Illinois at Chicago; 833 South Wood Street Chicago IL 60612 USA
| | - Nguyen Van Hung
- Institute of Marine Biochemistry of the Vietnam Academy of Science and Technology (VAST); 18 Hoang Quoc Viet Road, Cau Giay Hanoi Vietnam
| | - Nguyen M. Cuong
- Cuc Phuong National Park; Nho Quan District Ninh Binh Province Vietnam
| | - Djaja Doel Soejarto
- Department of Medicinal Chemistry and Pharmacognosy; College of Pharmacy; University of Illinois at Chicago; 833 South Wood Street Chicago IL 60612 USA
| | - Harry H.S. Fong
- Department of Medicinal Chemistry and Pharmacognosy; College of Pharmacy; University of Illinois at Chicago; 833 South Wood Street Chicago IL 60612 USA
| | - Scott G. Franzblau
- Institute for Tuberculosis Research; College of Pharmacy; University of Illinois at Chicago; 833 South Wood Street Chicago IL 60612 USA
| | - Sheng-Hong Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences; Kunming 650201 Yunnan China
| | - Zhen-Dan He
- Department of Pharmacy; School of Medicine; Key Laboratory of Novel Health Care Products; Engineering Laboratory of Shenzhen Natural small molecule Innovative Drugs; Shenzhen University; Shenzhen 518060 China
| | - Hong-Jie Zhang
- School of Chinese Medicine; Hong Kong Baptist University; Hong Kong SAR China
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25
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Celerino da Silva R, da Cruz HLA, Brandão LAC, Guimarães RL, Montenegro LML, Schindler HC, Segat L, Crovella S. DEFB1 gene polymorphisms and tuberculosis in a Northeastern Brazilian population. Braz J Microbiol 2016; 47:389-93. [PMID: 26991287 PMCID: PMC4874611 DOI: 10.1016/j.bjm.2015.09.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 09/05/2015] [Indexed: 11/22/2022] Open
Abstract
β-Defensin-1, an antimicrobial peptide encoded by the DEFB1 gene, is known to play an important role in lung mucosal immunity. In our association study we analyzed three DEFB1 functional polymorphisms −52G>A (rs1799946), −44C>G (rs1800972) and −20G>A (rs11362) in 92 tuberculosis patients and 286 healthy controls, both from Northeast Brazil: no association was found between the studied DEFB1 polymorphisms and the disease. However we cannot exclude that this lack of association could be due to the low number of subjects analyzed, as suggested by the low statistical power achieved for the three analyzed SNPs (values between 0.16 and 0.50).
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Affiliation(s)
- Ronaldo Celerino da Silva
- Department of Genetics, Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil; Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil.
| | - Heidi Lacerda Alves da Cruz
- Department of Genetics, Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil; Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil
| | - Lucas André Cavalcanti Brandão
- Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil; Department of Pathology, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Rafael Lima Guimarães
- Department of Genetics, Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil; Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil
| | - Lilian Maria Lapa Montenegro
- Department of Immunology, Aggeu Magalhães Research Center (CPqAM - FIOCRUZ - Pernambuco), Recife, Pernambuco, Brazil
| | - Haiana Charifker Schindler
- Department of Immunology, Aggeu Magalhães Research Center (CPqAM - FIOCRUZ - Pernambuco), Recife, Pernambuco, Brazil
| | - Ludovica Segat
- Institute for Maternal and Child Health - IRCCS "Burlo Garofolo", Trieste, Italy
| | - Sergio Crovella
- Department of Genetics, Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil; Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil
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26
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Joshi L, Ponnana M, Sivangala R, Chelluri LK, Nallari P, Valluri VL, Gaddam S. Cytokine production and mRNA expression in pulmonary tuberculosis patients and their household contacts of younger age group (15-25years). J Immunol Methods 2016; 432:65-71. [PMID: 26876300 DOI: 10.1016/j.jim.2016.02.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 02/09/2016] [Accepted: 02/09/2016] [Indexed: 11/25/2022]
Abstract
Household contacts of tuberculosis patients are at high risk of infection and development of active disease. In this study we evaluated the cytokine production and mRNA expression of IFN-γ, TNF-α, IL-10&IL-6 stimulated with r32kDa M. bovis BCGAg in active pulmonary tuberculosis patients (APTB), household contacts (HHC) and healthy controls (HC). The results showed the stimulated levels of IFN-γ and TNF-α were low while IL-10 levels were high in APTB and HHC compared to HC. IL-6 has not shown any significant difference. The mRNA expression of TNF- α was 8 fold high in HCs compared to APTB and HHC. The IL-6 expression was 2.2 fold &1 fold less in APTB and HHC compared to HCs. Multinomial logistic regression analysis indicated that the stimulated levels of IFN-γ & IL-6 and sex significantly predicted the HHC group from HCs at p<0.05.In conclusion further follow up studies with r32kd antigen might help to identify the high risk individuals.
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Affiliation(s)
- Lavanya Joshi
- Bhagwan Mahavir Medical Research Centre, Hyderabad, Telangana, India.
| | - Meenakshi Ponnana
- Bhagwan Mahavir Medical Research Centre, Hyderabad, Telangana, India.
| | - Ramya Sivangala
- Bhagwan Mahavir Medical Research Centre, Hyderabad, Telangana, India.
| | - Lakshmi Kiran Chelluri
- Department of Transplant Biology& Stem Cell, Global Hospital Hyderabad, Telangana, India.
| | - Pratibha Nallari
- Department of Genetics, Osmania University, Hyderabad, Telangana, India.
| | - Vijaya Lakshmi Valluri
- Bhagwan Mahavir Medical Research Centre, Hyderabad, Telangana, India; LEPRA India, Blue Peter Public Health & Research Centre, Cherlapally, Hyderabad, Telangana, India.
| | - Sumanlatha Gaddam
- Bhagwan Mahavir Medical Research Centre, Hyderabad, Telangana, India; Department of Genetics, Osmania University, Hyderabad, Telangana, India.
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27
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Madaiah M, Prashanth MK, Revanasiddappa HD, Veeresh B. Synthesis and evaluation of novel imidazo[4,5-c]pyridine derivatives as antimycobacterial agents against Mycobacterium tuberculosis. NEW J CHEM 2016. [DOI: 10.1039/c6nj02069k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel imidazo[4,5-c]pyridine derivatives showed cytotoxicity and decreased the bacterial load in lung and spleen tissues in the in vivo animal model.
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Affiliation(s)
| | | | | | - Bantal Veeresh
- Department of Pharmacology
- G. Pullareddy College of Pharmacy
- Mehdipatnam
- India
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28
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Shruthi N, Poojary B, Kumar V, Hussain MM, Rai VM, Pai VR, Bhat M, Revannasiddappa BC. Novel benzimidazole–oxadiazole hybrid molecules as promising antimicrobial agents. RSC Adv 2016. [DOI: 10.1039/c5ra23282a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
In the present study, we describe the design and expeditious synthesis of novel 2-aryl-5-(3-aryl-[1,2,4]-oxadiazol-5-yl)-1-methyl-1H-benzo[d]imidazole hybrid molecules as promising antimicrobial agents.
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Affiliation(s)
- N. Shruthi
- Department of Chemistry
- Mangalore University
- Mangalagangothri-574199
- India
| | - Boja Poojary
- Department of Chemistry
- Mangalore University
- Mangalagangothri-574199
- India
| | - Vasantha Kumar
- Department of Chemistry
- Mangalore University
- Mangalagangothri-574199
- India
| | | | | | - Vinitha R. Pai
- Department of Biochemistry
- Yenepoya University
- Mangalore
- India
| | - Mahima Bhat
- Department of Chemistry
- Mangalore University
- Mangalagangothri-574199
- India
| | - B. C. Revannasiddappa
- Department of Pharmacology
- N.G.S.M. Institute of Pharmaceutical Sciences
- Mangalore-575 018
- India
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29
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Pham DD, Grégoire N, Couet W, Gueutin C, Fattal E, Tsapis N. Pulmonary delivery of pyrazinamide-loaded large porous particles. Eur J Pharm Biopharm 2015; 94:241-50. [PMID: 26036447 DOI: 10.1016/j.ejpb.2015.05.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 05/20/2015] [Accepted: 05/26/2015] [Indexed: 10/23/2022]
Abstract
We have improved the aerodynamic properties of pyrazinamide loaded large porous particles (PZA-LPPs) designed for pulmonary delivery. To overcome the segregation of the different components occurring during the spray drying process and to obtain homogeneous LPPs, spray drying parameters were modified to decrease the drying speed. As a result, good aerodynamic properties for lung delivery were obtained with a fine particle fraction (FPF) of 40.1±1.0%, an alveolar fraction (AF) of 29.6±3.1%, a mass median aerodynamic diameter (MMADaer) of 4.1±0.2μm and a geometric standard deviation (GSD) of 2.16±0.16. Plasma and epithelial lining fluid (ELF) concentrations of pyrazinamide were evaluated after intratracheal insufflation of PZA-LPPs (4.22mgkg(-1)) into rats and compared to intravenous administration (iv) of a pyrazinamide solution (5.82mgkg(-1)). The in vivo pharmacokinetic evaluation of PZA-LPPs in rats reveals that intratracheal insufflation of PZA-LPPs leads to a rapid absorption in plasma with an absolute bioavailability of 66%. This proves that PZA-LPPs dissolve fast upon deposition and that PZA crosses efficiently the lung barrier to reach the systemic circulation. PZA concentrations were 1.28-fold higher in ELF after intratracheal administration than after iv administration and the ratio of ELF concentrations over plasma concentrations was 2-fold greater. Although these improvements are moderate, lung delivery of PZA appears an interesting alternative to oral delivery of the molecule and should now be tested in an infected animal model to evaluate its efficacy against Mycobacterium tuberculosis.
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Affiliation(s)
- Dinh-Duy Pham
- Univ Paris-Sud, Institut Galien Paris-Sud, CNRS UMR 8612, LabEx LERMIT, Châtenay-Malabry, France; University of Medicine and Pharmacy, Faculty of Pharmacy, Pharmaceutics Department, Ho Chi Minh City, Viet Nam; Division of Pharmacotechnology and Biopharmacy, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
| | | | | | - Claire Gueutin
- Univ Paris-Sud, Institut Galien Paris-Sud, CNRS UMR 8612, LabEx LERMIT, Châtenay-Malabry, France
| | - Elias Fattal
- Univ Paris-Sud, Institut Galien Paris-Sud, CNRS UMR 8612, LabEx LERMIT, Châtenay-Malabry, France
| | - Nicolas Tsapis
- Univ Paris-Sud, Institut Galien Paris-Sud, CNRS UMR 8612, LabEx LERMIT, Châtenay-Malabry, France.
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30
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Mohanty S, Jagannathan L, Ganguli G, Padhi A, Roy D, Alaridah N, Saha P, Nongthomba U, Godaly G, Gopal RK, Banerjee S, Sonawane A. A mycobacterial phosphoribosyltransferase promotes bacillary survival by inhibiting oxidative stress and autophagy pathways in macrophages and zebrafish. J Biol Chem 2015; 290:13321-43. [PMID: 25825498 DOI: 10.1074/jbc.m114.598482] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Indexed: 12/18/2022] Open
Abstract
Mycobacterium tuberculosis employs various strategies to modulate host immune responses to facilitate its persistence in macrophages. The M. tuberculosis cell wall contains numerous glycoproteins with unknown roles in pathogenesis. Here, by using Concanavalin A and LC-MS analysis, we identified a novel mannosylated glycoprotein phosphoribosyltransferase, encoded by Rv3242c from M. tuberculosis cell walls. Homology modeling, bioinformatic analyses, and an assay of phosphoribosyltransferase activity in Mycobacterium smegmatis expressing recombinant Rv3242c (MsmRv3242c) confirmed the mass spectrometry data. Using Mycobacterium marinum-zebrafish and the surrogate MsmRv3242c infection models, we proved that phosphoribosyltransferase is involved in mycobacterial virulence. Histological and infection assays showed that the M. marinum mimG mutant, an Rv3242c orthologue in a pathogenic M. marinum strain, was strongly attenuated in adult zebrafish and also survived less in macrophages. In contrast, infection with wild type and the complemented ΔmimG:Rv3242c M. marinum strains showed prominent pathological features, such as severe emaciation, skin lesions, hemorrhaging, and more zebrafish death. Similarly, recombinant MsmRv3242c bacteria showed increased invasion in non-phagocytic epithelial cells and longer intracellular survival in macrophages as compared with wild type and vector control M. smegmatis strains. Further mechanistic studies revealed that the Rv3242c- and mimG-mediated enhancement of intramacrophagic survival was due to inhibition of autophagy, reactive oxygen species, and reduced activities of superoxide dismutase and catalase enzymes. Infection with MsmRv3242c also activated the MAPK pathway, NF-κB, and inflammatory cytokines. In summary, we show that a novel mycobacterial mannosylated phosphoribosyltransferase acts as a virulence and immunomodulatory factor, suggesting that it may constitute a novel target for antimycobacterial drugs.
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Affiliation(s)
- Soumitra Mohanty
- From the School of Biotechnology, Campus-11, KIIT University, Bhubaneswar, Orissa-751024, India
| | - Lakshmanan Jagannathan
- From the School of Biotechnology, Campus-11, KIIT University, Bhubaneswar, Orissa-751024, India, the AU-KBC Research Center, MIT Campus, Anna University, Chromepet, Chennai, Tamil Nadu 600025, India
| | - Geetanjali Ganguli
- From the School of Biotechnology, Campus-11, KIIT University, Bhubaneswar, Orissa-751024, India
| | - Avinash Padhi
- From the School of Biotechnology, Campus-11, KIIT University, Bhubaneswar, Orissa-751024, India
| | - Debasish Roy
- the Department of Molecular Reproduction, Development, and Genetics, Indian Institute of Science, Bangalore 560012, India
| | - Nader Alaridah
- the Department of Microbiology, Immunology, and Glycobiology, Institute of Laboratory Medicine, Lund University, 221 00 Lund, Sweden
| | - Pratip Saha
- the Bioinformatics Center, Indian Institute of Science, Bangalore, Karnataka 560012, India, and
| | - Upendra Nongthomba
- the Department of Molecular Reproduction, Development, and Genetics, Indian Institute of Science, Bangalore 560012, India
| | - Gabriela Godaly
- the Department of Microbiology, Immunology, and Glycobiology, Institute of Laboratory Medicine, Lund University, 221 00 Lund, Sweden
| | - Ramesh Kumar Gopal
- the AU-KBC Research Center, MIT Campus, Anna University, Chromepet, Chennai, Tamil Nadu 600025, India
| | - Sulagna Banerjee
- the AU-KBC Research Center, MIT Campus, Anna University, Chromepet, Chennai, Tamil Nadu 600025, India, the Department of Surgery, University of Minnesota, Minneapolis, Minnesota 55455
| | - Avinash Sonawane
- From the School of Biotechnology, Campus-11, KIIT University, Bhubaneswar, Orissa-751024, India,
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31
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Chen M, Liang Y, Li W, Wang M, Hu L, Abuaku BK, Huang X, Tan H, Wen SW. Impact of MBL and MASP-2 gene polymorphism and its interaction on susceptibility to tuberculosis. BMC Infect Dis 2015; 15:151. [PMID: 25887173 PMCID: PMC4399571 DOI: 10.1186/s12879-015-0879-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Accepted: 03/10/2015] [Indexed: 12/17/2022] Open
Abstract
Background Mannose-binding lectin (MBL) and MBL-associated serine proteases 2 (MASP-2) are important proteins in the lectin pathway of the immune system. Polymorphism of MBL and MASP-2 genes may affect the serum concentration of MBL and MASP-2. This study explores the association between MBL and MASP-2 gene polymorphism and their interactions and the susceptibility to tuberculosis (TB). Method A total of 503 patients with TB and 419 healthy controls were recruited to participate in this case-control study. PCR-SSP technology was applied to genotype rs7096206 of MBL genes and rs2273346 and rs6695096 of MASP-2 genes. Demographic data and some exposure information were also obtained from study participants. Unconditional logistic regression analysis was used to identify association between the various factors and TB whilst Marginal Structural Linear Odds Models were used to estimate the interactions. Results Both genotype GC at rs7096206 of MBL genes and genotype TC at rs2273346 and rs6695096 of MASP-2 genes were more prevalent in the TB patient group than the healthy control group (P < 0.05, OR 1.393, 1.302 and 1.426 respectively). The relative excess risk of interaction (RERI) between rs7096206 of MBL genes and rs2273346 and rs6695096 of MASP-2 genes was 0.897 (95% CI: 0.282, 1.513) and 1.142 (95% CI: 0.755, 1.530) respectively (P < 0.05). Conclusion Polymorphisms of MBL (rs7096206) and MASP-2 (rs2273346 and rs6695096) were associated with the susceptibility of TB, and there were gene-gene interactions among them.
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Affiliation(s)
- Mengshi Chen
- Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Changsha, Hunan, 410008, PR China. .,Hunan Children's Hospital, Ziyuan RD 86, Changsha, Hunan, 410007, PR China.
| | - Ying Liang
- Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Changsha, Hunan, 410008, PR China. .,School of Public Health, Xinjiang Medical University, Urumqi, Xijiang, 830054, PR China.
| | - Wufei Li
- Department of Nursing, Shaoyang Medical College, Shaoyang, Hunan, 422000, PR China.
| | - Mian Wang
- Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Changsha, Hunan, 410008, PR China.
| | - Li Hu
- Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Changsha, Hunan, 410008, PR China. .,Beijing Center for Diseases Prevention and Control, Beijing, 100013, PR China.
| | - Benjamin Kwaku Abuaku
- Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Changsha, Hunan, 410008, PR China. .,Department of Epidemiology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, PO Box LG581, Legon, Accra, Ghana.
| | - Xin Huang
- Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Changsha, Hunan, 410008, PR China.
| | - Hongzhuan Tan
- Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Changsha, Hunan, 410008, PR China.
| | - Shi Wu Wen
- Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Changsha, Hunan, 410008, PR China. .,Department of Obstetrics & Gynecology, University of Ottawa, The Ottawa Hospital, 501 Smyth Road, Ottawa, Ontario, Canada.
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32
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Patta PC, Martinelli LKB, Rotta M, Abbadi BL, Santos DS, Basso LA. Mode of action of recombinant hypoxanthine–guanine phosphoribosyltransferase from Mycobacterium tuberculosis. RSC Adv 2015. [DOI: 10.1039/c5ra14918e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Homodimeric Mycobacterium tuberculosis HGPRT follows a sequential compulsory ordered enzyme mechanism.
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Affiliation(s)
- Paulo C. Patta
- Centro de Pesquisas em Biologia Molecular e Funcional (CPBMF)
- Instituto Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB)
- Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
- Porto Alegre
- Brazil
| | - Leonardo K. B. Martinelli
- Centro de Pesquisas em Biologia Molecular e Funcional (CPBMF)
- Instituto Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB)
- Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
- Porto Alegre
- Brazil
| | - Mariane Rotta
- Centro de Pesquisas em Biologia Molecular e Funcional (CPBMF)
- Instituto Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB)
- Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
- Porto Alegre
- Brazil
| | - Bruno L. Abbadi
- Centro de Pesquisas em Biologia Molecular e Funcional (CPBMF)
- Instituto Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB)
- Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
- Porto Alegre
- Brazil
| | - Diogenes S. Santos
- Centro de Pesquisas em Biologia Molecular e Funcional (CPBMF)
- Instituto Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB)
- Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
- Porto Alegre
- Brazil
| | - Luiz A. Basso
- Centro de Pesquisas em Biologia Molecular e Funcional (CPBMF)
- Instituto Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB)
- Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
- Porto Alegre
- Brazil
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33
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Synthesis and structural activity relationship study of antitubercular carboxamides. INTERNATIONAL JOURNAL OF MEDICINAL CHEMISTRY 2014; 2014:614808. [PMID: 25610646 PMCID: PMC4295614 DOI: 10.1155/2014/614808] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 11/21/2014] [Accepted: 11/30/2014] [Indexed: 11/19/2022]
Abstract
The unusual structure and chemical composition of the mycobacterial cell wall, the tedious duration of therapy, and resistance developed by the microorganism have made the recurrence of the disease multidrug resistance and extensive or extreme drug resistance. The prevalence of tuberculosis in synergy with HIV/AIDS epidemic augments the risk of developing the disease by 100-fold. The need to synthesize new drugs that will shorten the total duration of effective treatment and/or significantly reduce the dosage taken under DOTS supervision, improve on the treatment of multidrug-resistant tuberculosis which defies the treatment with isoniazid and rifampicin, and provide effective treatment for latent TB infections which is essential for eliminating tuberculosis prompted this review. In this review, we considered the synthesis and structure activity relationship study of carboxamide derivatives with antitubercular potential.
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Matei L, Bleotu C, Baciu I, Diaconu CC, Hanganu A, Banu O, Ionita P, Paun A, Tatibouët A, Zarafu I. Synthesis and biological activities of some new isonicotinic acid 2-(2-hydroxy-8-substituted-tricyclo[7.3.1.0(2.7)]tridec-13-ylidene)-hydrazides. Bioorg Med Chem 2014; 23:401-10. [PMID: 25557899 DOI: 10.1016/j.bmc.2014.12.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 12/13/2014] [Accepted: 12/17/2014] [Indexed: 11/15/2022]
Abstract
A series of several new isoniazid derivatives, isonicotinic acid 2-(2-hydroxy-8-substituted-tricyclo[7.3.1.0(2.7)]tridec-13-ylidene)-hydrazides, were synthesized and fully characterized. These new isoniazid derivatives were studied regarding their antibacterial activity and cytotoxicity, as well as their influences on some metabolizing enzymes. The best anti-mycobacterial activity was observed in the case of compounds containing alkyl side chains in the 8 position of tricyclo[7.3.1.0(2.7)]tridec-13-ylidene group. On contrary, the antimicrobial activity of these new compounds against various non-tuberculosis strains showed the best activity to be with the phenyl side chain of compound 6. It proved also to be the most toxic, inducing apoptosis and blocking the cell cycle in G0/G1 phase. The cell cycle was blocked in G0/G1 phase also by compound 3, but this compound did not show any toxicity. All compounds induced the expression of NAT1 and NAT2 genes in HT-29 cell line, and the expression of CYP1A1 in HT-29 and HCT-8 cell lines. The expression level of CYP3A4 was increased by compounds 1, 6 and 7 in HCT-8 cells. These results indicated that the activation of other metabolizing pathways, apart from those of isoniazid, take place. It might also point out the possibility of an increased isoniazid acetylation ratio by co-administration with new compounds in slow acetylators.
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Affiliation(s)
- Lilia Matei
- Stefan S Nicolau Institute of Virology, Romanian Academy, Bucharest, Romania; Faculty of Chemistry, University of Bucharest, Romania
| | - Coralia Bleotu
- Stefan S Nicolau Institute of Virology, Romanian Academy, Bucharest, Romania
| | - Ion Baciu
- Faculty of Chemistry, University of Bucharest, Romania
| | | | | | - Otilia Banu
- Institute of Cardiovascular Diseases Prof. Dr. C.C. Iliescu, Microbiology Department, Bucharest, Romania
| | - Petre Ionita
- Faculty of Chemistry, University of Bucharest, Romania
| | - Anca Paun
- Faculty of Chemistry, University of Bucharest, Romania
| | | | - Irina Zarafu
- Faculty of Chemistry, University of Bucharest, Romania.
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Comparison of cyp141 and IS6110 for detection of Mycobacterium tuberculosis from clinical specimens by PCR. J Infect Public Health 2014; 8:32-6. [PMID: 25304426 DOI: 10.1016/j.jiph.2014.08.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2014] [Revised: 04/23/2014] [Accepted: 08/24/2014] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Tuberculosis is a major public health problem throughout the world. TB's worldwide patterns of prevalence coupled with the increase in incidence of HIV infection threaten the health and lives of humans worldwide. Rapid detection of TB and the rapidly initiation of the administration of medication are important strategies for stopping the transmission of this disease transmission and its resistance to anti-TB drugs. Molecular methods are advantageous relative to conventional techniques due to their greater speed and sensitivity in the detection of TB. METHODS In this study, we targeted the cyp141 gene for the detection of Mycobacterium tuberculosis from clinical specimens (n=123) by PCR and compared the sensitivity and specificity of this new target with those of IS6110 gene. RESULTS Targeting of the cyp141 gene is more sensitive (97.1% for cultured isolates and 85.7% for direct specimens) than the targeting of the commonly used IS6110 gene (95.1% for cultured isolates and 42.9% for direct specimens), and the specificities of these two target genes were equal (100%). CONCLUSIONS The cyp141 gene can be used as a new target for the direct detection of Mycobacterium tuberculosis that seems to be superior to IS6110.
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Zhou FW, Lei HS, Fan L, Jiang L, Liu J, Peng XM, Xu XR, Chen L, Zhou CH, Zou YY, Liu CP, He ZQ, Yang DC. Design, synthesis, and biological evaluation of dihydroartemisinin–fluoroquinolone conjugates as a novel type of potential antitubercular agents. Bioorg Med Chem Lett 2014; 24:1912-7. [DOI: 10.1016/j.bmcl.2014.03.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2013] [Revised: 02/25/2014] [Accepted: 03/05/2014] [Indexed: 12/18/2022]
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Salicylanilide pyrazinoates inhibit in vitro multidrug-resistant Mycobacterium tuberculosis strains, atypical mycobacteria and isocitrate lyase. Eur J Pharm Sci 2014; 53:1-9. [DOI: 10.1016/j.ejps.2013.12.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 10/31/2013] [Accepted: 12/03/2013] [Indexed: 11/24/2022]
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38
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Bellissimo-Rodrigues F, Passos ADC, Ruffino-Netto A. Latent tuberculosis: the snake inside the egg. Rev Soc Bras Med Trop 2014; 46:667-8. [PMID: 24474005 DOI: 10.1590/0037-8682-0170-2013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 11/21/2013] [Indexed: 11/22/2022] Open
Affiliation(s)
- Fernando Bellissimo-Rodrigues
- Departamento de Medicina Social, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão PretoSP
| | - Afonso Dinis Costa Passos
- Departamento de Medicina Social, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão PretoSP
| | - Antônio Ruffino-Netto
- Departamento de Medicina Social, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão PretoSP
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39
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Ibiapino AL, Seiceira RC, Pitaluga A, Trindade AC, Ferreira FF. Structural characterization of form I of anhydrous rifampicin. CrystEngComm 2014. [DOI: 10.1039/c4ce01157k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Crystal structure determination of form I of anhydrous rifampicin by X-ray powder diffraction data. Crystal morphology prediction revealed a good agreement with the images of the crystals.
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Affiliation(s)
- Amanda Laura Ibiapino
- Center of Natural and Human Sciences (CCNH)
- Federal University of ABC (UFABC)
- Santo André, Brazil
| | | | - Altivo Pitaluga
- Real Time Process and Chemical Analysis Development Center (NQTR)
- Chemistry Institute
- Federal University of Rio de Janeiro (UFRJ)
- Rio de Janeiro, Brazil
| | | | - Fabio Furlan Ferreira
- Center of Natural and Human Sciences (CCNH)
- Federal University of ABC (UFABC)
- Santo André, Brazil
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Lee SH, Choi M, Kim P, Myung PK. 3D-QSAR and cell wall permeability of antitubercular nitroimidazoles against Mycobacterium tuberculosis. Molecules 2013; 18:13870-85. [PMID: 24217328 PMCID: PMC6270125 DOI: 10.3390/molecules181113870] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Revised: 11/04/2013] [Accepted: 11/06/2013] [Indexed: 11/18/2022] Open
Abstract
Inhibitory activities of monocyclic nitroimidazoles against Mycobacterium tuberculosis (Mtb) deazaflavin-dependent nitroreductase (DDN) were modeled by using docking, pharmacophore alignment and comparative molecular similarity indices analysis (CoMSIA) methods. A statistically significant model obtained from CoMSIA was established based on a training set using pharmacophore-based molecular alignment. The leave-one out cross-validation correlation coefficients q2 (CoMSIA) were 0.681. The CoMSIA model had a good correlation (/CoMSIA = 0.611) between the predicted and experimental activities against excluded test sets. The generated model suggests that electrostatic, hydrophobic and hydrogen bonding interactions all play important roles for interaction between ligands and receptors. The predicted cell wall permeability (logPapp) for substrates with high inhibitory activity against Mtb were investigated. The distribution coefficient (logD) range was 2.41 < logD < 2.89 for the Mtb cell wall membrane permeability. The larger the polar surface area is, the better the permeability is. A larger radius of gyration (rgry) and a small fraction of rotatable bonds (frtob) of these molecules leads to higher cell wall penetration ability. The information obtained from the in silico tools might be useful in the design of more potent compounds that are active against Mtb.
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Affiliation(s)
- Sang-Ho Lee
- Drug Discovery Division, Korea Research Institute of Chemical Technology, 141 Gajeongro, Yuseong, Daejeon 305-600, Korea; E-Mails: (S.-H.L.); (P.K.)
| | - Minsung Choi
- College of Pharmacy, Chungnam National University, Daejeon 305-764, Korea; E-Mail:
| | - Pilho Kim
- Drug Discovery Division, Korea Research Institute of Chemical Technology, 141 Gajeongro, Yuseong, Daejeon 305-600, Korea; E-Mails: (S.-H.L.); (P.K.)
- Department of Medicinal and Pharmaceutical Chemistry, University of Science and Technology, Daejeon 306-350, Korea
| | - Pyung Keun Myung
- College of Pharmacy, Chungnam National University, Daejeon 305-764, Korea; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +82-42-821-5929; Fax: +82-42-823-6566
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Pham DD, Fattal E, Ghermani N, Guiblin N, Tsapis N. Formulation of pyrazinamide-loaded large porous particles for the pulmonary route: Avoiding crystal growth using excipients. Int J Pharm 2013; 454:668-77. [DOI: 10.1016/j.ijpharm.2013.04.016] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 04/09/2013] [Accepted: 04/10/2013] [Indexed: 11/15/2022]
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Wink PL, Sanchez Quitian ZA, Rosado LA, Rodrigues VDS, Petersen GO, Lorenzini DM, Lipinski-Paes T, Saraiva Macedo Timmers LF, de Souza ON, Basso LA, Santos DS. Biochemical characterization of recombinant nucleoside hydrolase from Mycobacterium tuberculosis H37Rv. Arch Biochem Biophys 2013; 538:80-94. [DOI: 10.1016/j.abb.2013.08.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 08/13/2013] [Accepted: 08/17/2013] [Indexed: 11/25/2022]
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Chimusa ER, Zaitlen N, Daya M, Möller M, van Helden PD, Mulder NJ, Price AL, Hoal EG. Genome-wide association study of ancestry-specific TB risk in the South African Coloured population. Hum Mol Genet 2013; 23:796-809. [PMID: 24057671 DOI: 10.1093/hmg/ddt462] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The worldwide burden of tuberculosis (TB) remains an enormous problem, and is particularly severe in the admixed South African Coloured (SAC) population residing in the Western Cape. Despite evidence from twin studies suggesting a strong genetic component to TB resistance, only a few loci have been identified to date. In this work, we conduct a genome-wide association study (GWAS), meta-analysis and trans-ethnic fine mapping to attempt the replication of previously identified TB susceptibility loci. Our GWAS results confirm the WT1 chr11 susceptibility locus (rs2057178: odds ratio = 0.62, P = 2.71e(-06)) previously identified by Thye et al., but fail to replicate previously identified polymorphisms in the TLR8 gene and locus 18q11.2. Our study demonstrates that the genetic contribution to TB risk varies between continental populations, and illustrates the value of including admixed populations in studies of TB risk and other complex phenotypes. Our evaluation of local ancestry based on the real and simulated data demonstrates that case-only admixture mapping is currently impractical in multi-way admixed populations, such as the SAC, due to spurious deviations in average local ancestry generated by current local ancestry inference methods. This study provides insights into identifying disease genes and ancestry-specific disease risk in multi-way admixed populations.
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Affiliation(s)
- Emile R Chimusa
- Department of Clinical Laboratory Sciences, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
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Virulence and immune response induced by Mycobacterium avium complex strains in a model of progressive pulmonary tuberculosis and subcutaneous infection in BALB/c mice. Infect Immun 2013; 81:4001-12. [PMID: 23959717 DOI: 10.1128/iai.00150-13] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The genus Mycobacterium comprises more than 150 species, including important pathogens for humans which cause major public health problems. The vast majority of efforts to understand the genus have been addressed in studies with Mycobacterium tuberculosis. The biological differentiation between M. tuberculosis and nontuberculous mycobacteria (NTM) is important because there are distinctions in the sources of infection, treatments, and the course of disease. Likewise, the importance of studying NTM is not only due to its clinical significance but also due to the mechanisms by which some species are pathogenic while others are not. Mycobacterium avium complex (MAC) is the most important group of NTM opportunistic pathogens, since it is the second largest medical complex in the genus after the M. tuberculosis complex. Here, we evaluated the virulence and immune response of M. avium subsp. avium and Mycobacterium colombiense, using experimental models of progressive pulmonary tuberculosis and subcutaneous infection in BALB/c mice. Mice infected intratracheally with a high dose of MAC strains showed high expression of tumor necrosis factor alpha (TNF-α) and inducible nitric oxide synthase with rapid bacillus elimination and numerous granulomas, but without lung consolidation during late infection in coexistence with high expression of anti-inflammatory cytokines. In contrast, subcutaneous infection showed high production of the proinflammatory cytokines TNF-α and gamma interferon with relatively low production of anti-inflammatory cytokines such as interleukin-10 (IL-10) or IL-4, which efficiently eliminate the bacilli but maintain extensive inflammation and fibrosis. Thus, MAC infection evokes different immune and inflammatory responses depending on the MAC species and affected tissue.
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Jaskulski L, Rosado LA, Rostirolla DC, Timmers LFSM, de Souza ON, Santos DS, Basso LA. Kinetic mechanism and energetics of binding of phosphoryl group acceptors to Mycobacterium tuberculosis cytidine monophosphate kinase. Arch Biochem Biophys 2013; 536:53-63. [PMID: 23756762 DOI: 10.1016/j.abb.2013.05.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 05/16/2013] [Accepted: 05/27/2013] [Indexed: 11/28/2022]
Abstract
Cytidine monophosphate kinase from Mycobacterium tuberculosis (MtCMK) likely plays a role in supplying precursors for nucleic acid synthesis. MtCMK catalyzes the ATP-dependent phosphoryl group transfer preferentially to CMP and dCMP. Initial velocity studies and Isothermal titration calorimetry (ITC) measurements showed that MtCMK follows a random-order mechanism of substrate (CMP and ATP) binding, and an ordered mechanism for product release, in which ADP is released first followed by CDP. The thermodynamic signatures of CMP and CDP binding to MtCMK showed favorable enthalpy and unfavorable entropy, and ATP binding was characterized by favorable changes in enthalpy and entropy. The contribution of linked protonation events to the energetics of MtCMK:phosphoryl group acceptor binary complex formation suggested a net gain of protons. Values for the pKa of a likely chemical group involved in proton exchange and for the intrinsic binding enthalpy were calculated. The Asp187 side chain of MtCMK is suggested as the likely candidate for the protonation event. Data on thermodynamics of binary complex formation were collected to evaluate the contribution of 2'-OH group to intermolecular interactions. The data are discussed in light of functional and structural comparisons between CMP/dCMP kinases and UMP/CMP ones.
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Affiliation(s)
- Léia Jaskulski
- Centro de Pesquisas em Biologia Molecular e Funcional, Instituto Nacional de Ciência e Tecnologia em Tuberculose, Pontifícia Universidade Católica do Rio Grande do Sul, Av. Ipiranga 6681, Porto Alegre, RS 90619-900, Brazil.
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da Cruz HLA, da Silva RC, Segat L, de Carvalho MSZDMG, Brandão LAC, Guimarães RL, Santos FCF, de Lira LAS, Montenegro LML, Schindler HC, Crovella S. MBL2 gene polymorphisms and susceptibility to tuberculosis in a northeastern Brazilian population. INFECTION GENETICS AND EVOLUTION 2013; 19:323-9. [PMID: 23524205 DOI: 10.1016/j.meegid.2013.03.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 03/01/2013] [Accepted: 03/05/2013] [Indexed: 11/24/2022]
Abstract
The innate immune system represents the first line of host defense against pathogens. Genetics factors regulating the immune responses play a role in the susceptibility to infectious diseases, such as tuberculosis (TB). We analyzed MBL2 promoter and exon 1 functional single nucleotide polymorphisms (SNPs) in a group of 155TB patients and 148 healthy controls in order to evaluate their influence on the onset of infection and TB development. There was no association between MBL2 -550 HL promoter polymorphisms and susceptibility to develop TB, but heterozygous -221 Y/X genotype was significantly more frequent in pulmonary TB patients than controls. Moreover, MBL2 exon 1 O allele, was significantly associated with susceptibility to TB development in general (p=0.023, OR=1.61, 95% CI 1.05-2.49) and pulmonary TB (p=0.0008, OR=2.16, 95% CI 1.35-3.46); C allele at codon 57, as well as A/C genotype, were significantly more frequent in TB patients than in controls. Our results indicate that MBL2 polymorphisms, especially at codon 57, could be considered as risk factors for TB development.
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Affiliation(s)
- Heidi Lacerda Alves da Cruz
- Department of Immunology, Aggeu Magalhães Research Center-CPqAM/FIOCRUZ, Av. Prof. Moraes Rego, s/n°, CEP 50.670-420 Recife, Pernambuco, Brazil
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Chalya PL, Mchembe MD, Mshana SE, Rambau P, Jaka H, Mabula JB. Tuberculous bowel obstruction at a university teaching hospital in Northwestern Tanzania: a surgical experience with 118 cases. World J Emerg Surg 2013; 8:12. [PMID: 23497503 PMCID: PMC3608959 DOI: 10.1186/1749-7922-8-12] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2013] [Accepted: 03/08/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Bowel obstruction resulting from intestinal tuberculosis has been reported to be more prevalent in developing countries including Tanzania. This study was undertaken to describe the clinicopathological profile, surgical management and outcome of tuberculous intestinal obstruction in our local setting and to identify factors responsible for poor outcome among these patients. METHODS This was a prospective descriptive study of patients operated for tuberculous intestinal obstruction at Bugando Medical Centre (BMC) in northwestern Tanzania from April 2008 to March 2012. Ethical approval to conduct the study was obtained from relevant authorities. Statistical data analysis was performed using SPSS version 17.0. RESULTS A total of 118 patients with tuberculous intestinal obstruction were studied. The male to female ratio was 1.8: 1. The median age was 26 years (range 11-67 years). The modal age group was 21-30 years. Thirty-one (26.3%) patients had associated pulmonary tuberculosis and 25 (21.2%) patients were HIV positive with a median CD4+ count of 225 cells /μl. Small bowel strictures were the most common operative findings accounting for 72.9% of cases. The ileo-caecal region was the commonest area of involvement in 68 (57.6%) patients. The right hemicolectomy with ileo-transverse anastomosis was the most frequent surgical procedure performed in 66 (55.9%) patients. Postoperatively all the patients received antituberculous drugs for a period of one year. Postoperative complication rate was 37.3% and surgical site infection (SSI) was the most frequent complication in 42.8% of cases. HIV positivity and low CD4+ count were the main predictors of SSI (p < 0.001). The overall median length of hospital stay was 24 days. Patients who had postoperative complications stayed longer in the hospital and this was statistically significant (p = 0.011). Mortality rate was 28.8% and it was significantly associated with co-existing medical illness, delayed presentation, HIV positivity, low CD 4 count (<200 cells/μl), ASA class and presence of complications (p < 0.001). The follow up of patients was generally poor as more than fifty percent of patients were lost to follow up. CONCLUSION Tuberculous bowel obstruction remains rampant in our environment and contributes significantly to high morbidity and mortality. The majority of patients present late when the disease becomes complicated. A high index of suspicion, proper evaluation and therapeutic trial in suspected patients is essential for an early diagnosis and timely definitive treatment, in order to decrease the morbidity and mortality associated with this disease.
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Affiliation(s)
- Phillipo L Chalya
- Department of Surgery, Catholic University of Health and Allied Sciences-Bugando, Mwanza, Tanzania
| | - Mabula D Mchembe
- Department of Surgery, Muhimbili University of Health and Allied Sciences, Dar Es Salaam, Tanzania
| | - Stephen E Mshana
- Department of Microbiology & Immunology, Catholic University of Health and Allied Sciences-Bugando, Mwanza, Tanzania
| | - Peter Rambau
- Department of Pathology, Catholic University of Health and Allied Sciences-Bugando, Mwanza, Tanzania
| | - Hyasinta Jaka
- Department of Internal Medicine, Catholic University of Health and Allied Sciences-Bugando, Mwanza, Tanzania
| | - Joseph B Mabula
- Department of Surgery, Catholic University of Health and Allied Sciences-Bugando, Mwanza, Tanzania
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Villela AD, Ducati RG, Rosado LA, Bloch CJ, Prates MV, Gonçalves DC, Ramos CHI, Basso LA, Santos DS. Biochemical characterization of uracil phosphoribosyltransferase from Mycobacterium tuberculosis. PLoS One 2013; 8:e56445. [PMID: 23424660 PMCID: PMC3570474 DOI: 10.1371/journal.pone.0056445] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Accepted: 01/14/2013] [Indexed: 11/18/2022] Open
Abstract
Uracil phosphoribosyltransferase (UPRT) catalyzes the conversion of uracil and 5-phosphoribosyl-α-1-pyrophosphate (PRPP) to uridine 5′-monophosphate (UMP) and pyrophosphate (PPi). UPRT plays an important role in the pyrimidine salvage pathway since UMP is a common precursor of all pyrimidine nucleotides. Here we describe cloning, expression and purification to homogeneity of upp-encoded UPRT from Mycobacterium tuberculosis (MtUPRT). Mass spectrometry and N-terminal amino acid sequencing unambiguously identified the homogeneous protein as MtUPRT. Analytical ultracentrifugation showed that native MtUPRT follows a monomer-tetramer association model. MtUPRT is specific for uracil. GTP is not a modulator of MtUPRT ativity. MtUPRT was not significantly activated or inhibited by ATP, UTP, and CTP. Initial velocity and isothermal titration calorimetry studies suggest that catalysis follows a sequential ordered mechanism, in which PRPP binding is followed by uracil, and PPi product is released first followed by UMP. The pH-rate profiles indicated that groups with pK values of 5.7 and 8.1 are important for catalysis, and a group with a pK value of 9.5 is involved in PRPP binding. The results here described provide a solid foundation on which to base upp gene knockout aiming at the development of strategies to prevent tuberculosis.
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Affiliation(s)
- Anne Drumond Villela
- Centro de Pesquisas em Biologia Molecular e Funcional (CPBMF), Instituto Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
- Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Rodrigo Gay Ducati
- Centro de Pesquisas em Biologia Molecular e Funcional (CPBMF), Instituto Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Leonardo Astolfi Rosado
- Centro de Pesquisas em Biologia Molecular e Funcional (CPBMF), Instituto Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
- Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
- Programa de Pós-Graduação em Medicina e Ciências da Saúde, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Carlos Junior Bloch
- Laboratório de Espectrometria de Massa, Empresa Brasileira de Pesquisa Agropecuária - Recursos Genéticos e Biotecnologia, Estação Parque Biológico, Brasília, Federal District, Brazil
| | - Maura Vianna Prates
- Laboratório de Espectrometria de Massa, Empresa Brasileira de Pesquisa Agropecuária - Recursos Genéticos e Biotecnologia, Estação Parque Biológico, Brasília, Federal District, Brazil
| | - Danieli Cristina Gonçalves
- Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
- Instituto de Química, Universidade Estadual de Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | | | - Luiz Augusto Basso
- Centro de Pesquisas em Biologia Molecular e Funcional (CPBMF), Instituto Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
- Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
- * E-mail: (LAB); (DSS)
| | - Diogenes Santiago Santos
- Centro de Pesquisas em Biologia Molecular e Funcional (CPBMF), Instituto Nacional de Ciência e Tecnologia em Tuberculose (INCT-TB), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
- Programa de Pós-Graduação em Biologia Celular e Molecular, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil
- * E-mail: (LAB); (DSS)
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Krátký M, Vinšová J, Novotná E, Mandíková J, Wsól V, Trejtnar F, Ulmann V, Stolaříková J, Fernandes S, Bhat S, Liu JO. Salicylanilide derivatives block Mycobacterium tuberculosis through inhibition of isocitrate lyase and methionine aminopeptidase. Tuberculosis (Edinb) 2012; 92:434-9. [PMID: 22765970 DOI: 10.1016/j.tube.2012.06.001] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2011] [Revised: 04/25/2012] [Accepted: 06/07/2012] [Indexed: 12/26/2022]
Abstract
The global burden of tuberculosis, its health and socio-economic impacts, the presence of drug-resistant forms and a potential threat of latent tuberculosis should serve as a strong impetus for the development of novel antituberculosis agents. We reported the in vitro activity of salicylanilide benzoates and pyrazine-2-carboxylates against Mycobacterium tuberculosis (minimum inhibitory concentrations as low as 0.5 μmol/L). Nineteen salicylanilide derivatives with mostly good antimycobacterial activity were evaluated for the inhibition of two essential mycobacterial enzymes, methionine aminopeptidase and isocitrate lyase, which are necessary for the maintenance of the latent tuberculosis infection. Salicylanilide derivatives act as moderate inhibitors of both mycobacterial and human methionine aminopeptidase and they also affect the function of mycobacterial isocitrate lyase. 4-Bromo-2-[4-(trifluoromethyl)phenylcarbamoyl]phenyl pyrazine-2-carboxylate was the most potent inhibitor of mycobacterial methionine aminopeptidase (41% inhibition at 10 μmol/L) and exhibited the highest selectivity. 5-Chloro-2-hydroxy-N-[4-(trifluoromethyl)phenyl]benzamide and 4-chloro-2-[4-(trifluoromethyl)phenylcarbamoyl]phenyl pyrazine-2-carboxylate caused 59% inhibition of isocitrate lyase at 100 μmol/L concentration and (S)-4-bromo-2-[4-(trifluoromethyl)phenylcarbamoyl]phenyl 2-acetamido-3-phenylpropanoate produced 22% inhibition at 10 μmol/L; this rate is approximately comparable to 3-nitropropionic acid. Inhibition of those enzymes contributes at least in part to the antimicrobial activity of the compounds.
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Affiliation(s)
- Martin Krátký
- Department of Inorganic and Organic Chemistry, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
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Breda A, Machado P, Rosado LA, Souto AA, Santos DS, Basso LA. Pyrimidin-2(1H)-ones based inhibitors of Mycobacterium tuberculosis orotate phosphoribosyltransferase. Eur J Med Chem 2012; 54:113-22. [PMID: 22608674 DOI: 10.1016/j.ejmech.2012.04.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Revised: 04/20/2012] [Accepted: 04/24/2012] [Indexed: 11/30/2022]
Abstract
Tuberculosis (TB) is an ancient human chronic infectious disease caused mainly by Mycobacterium tuberculosis. The emergence of strains resistant to first and second line anti-TB drugs, associated with the increasing number of TB cases among HIV positive subjects, and the large number of individuals infected with latent bacilli have urged the development of new strategies to treat TB. Enzymes of nucleotide metabolism pathways provide promising molecular targets for the development of drugs, aiming at both active and latent TB. The orotate phosphoribosyltransferase (OPRT) enzyme catalyzes the synthesis of orotidine 5'-monophosphate from 5'-phospho-α-d-ribose 1'-diphosphate and orotic acid, in the de novo pyrimidine synthesis pathway. Based on the kinetic mechanism and molecular properties, here we describe the design, selection and synthesis of substrate analogs with inhibitory activity of M. tuberculosis OPRT (MtOPRT) enzyme. Steady-state kinetic measurements were employed to determine the mode of inhibition of commercially available and chemically derived compounds. The 6-Hydroxy-2-oxo-1,2-dihydropyridine-4-carboxylic acid (6) chemical compound and its derivative, 3-Benzylidene-2,6-dioxo-1,2,3,6-tetrahydropyridine-4-carboxylic acid (13), showed enzyme inhibition constants in the submicromolar range. Isothermal titration calorimetry data indicated that binding of both compounds to MtOPRT have negative enthalpy and favorable Gibbs free energy probably due to their high complementarity to the enzyme's binding pocket. Improvement of compound 13 hydrophobic character by addition of an aromatic ring substituent resulted in entropic optimization, reflected on a thermodynamic discrimination profile characteristic of high affinity ligands. These inhibitors represent lead compounds for further development of MtOPRT inhibitors with increased potency, which may be tested as anti-TB agents.
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Affiliation(s)
- Ardala Breda
- Instituto Nacional de Ciência e Tecnologia em Tuberculose, Pontifícia Universidade Católica do Rio Grande do Sul, Avenida Ipiranga 6900, Prédio 92A - TECNOPUC, 90619-900 Porto Alegre, Rio Grande do Sul, Brazil.
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