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Barreiro C, Albillos SM, García-Estrada C. Penicillium chrysogenum: Beyond the penicillin. ADVANCES IN APPLIED MICROBIOLOGY 2024; 127:143-221. [PMID: 38763527 DOI: 10.1016/bs.aambs.2024.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2024]
Abstract
Almost one century after the Sir Alexander Fleming's fortuitous discovery of penicillin and the identification of the fungal producer as Penicillium notatum, later Penicillium chrysogenum (currently reidentified as Penicillium rubens), the molecular mechanisms behind the massive production of penicillin titers by industrial strains could be considered almost fully characterized. However, this filamentous fungus is not only circumscribed to penicillin, and instead, it seems to be full of surprises, thereby producing important metabolites and providing expanded biotechnological applications. This review, in addition to summarizing the classical role of P. chrysogenum as penicillin producer, highlights its ability to generate an array of additional bioactive secondary metabolites and enzymes, together with the use of this microorganism in relevant biotechnological processes, such as bioremediation, biocontrol, production of bioactive nanoparticles and compounds with pharmaceutical interest, revalorization of agricultural and food-derived wastes or the enhancement of food industrial processes and the agricultural production.
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Affiliation(s)
- Carlos Barreiro
- Área de Bioquímica y Biología Molecular, Departamento de Biología Molecular, Facultad de Veterinaria, Universidad de León, León, Spain; Instituto de Biología Molecular, Genómica y Proteómica (INBIOMIC), Universidad de León, León, Spain.
| | - Silvia M Albillos
- Área de Bioquímica y Biología Molecular, Departamento de Biotecnología y Ciencia de los Alimentos, Facultad de Ciencias, Universidad de Burgos, Burgos, Spain
| | - Carlos García-Estrada
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, León, Spain; Instituto de Biomedicina (IBIOMED), Universidad de León, León, Spain
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2
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Klifto KM, Freed GL, Nguyen DH. Pharmacotherapeutics in Plastic and Reconstructive Surgery. Plast Reconstr Surg 2023; 152:1376-1377. [PMID: 38019692 DOI: 10.1097/prs.0000000000010887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Affiliation(s)
- Kevin M Klifto
- From the Division of Plastic and Reconstructive Surgery, Department of Surgery, University of Missouri Health Care
| | - Gary L Freed
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Dartmouth Hitchcock Medical Center and Clinics
| | - Dung H Nguyen
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford Medicine
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3
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Yang H, Ye DM, Lin ZZ, Lin XY, Yuan JJ, Guo Y. Young people exposure to antibiotics: Implication for health risk and the impact from eating habits of takeaway food. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 902:166377. [PMID: 37597538 DOI: 10.1016/j.scitotenv.2023.166377] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 08/04/2023] [Accepted: 08/15/2023] [Indexed: 08/21/2023]
Abstract
Exposure to antibiotics, mainly from animal food ingestion, may have adverse effects on human health. Takeaway food is the preferred choice for the dietary of most Chinese young people nowadays, but the relationship between takeaway eating and antibiotic exposure is not yet adequately understood. In the present study, 297 young people were recruited to collect urine samples and questionnaires with an emphasis on their takeaway eating habits. The internal exposure to 16 antibiotics and three metabolites was measured in urine samples by high-performance liquid chromatography-tandem mass spectrometry, as well as a DNA oxidative damage marker, 8-hydroxydeoxyguanosine (8-OHdG). At least one kind of antibiotic was found in over 90 % of urine samples, with total concentrations from 0.667 to 3.02 × 104 ng/mL. High exposure levels of antibiotics were more likely to be found in individuals with a larger body mass index. The concentrations of six antibiotics were significantly different among people with different overall weekly eating frequencies, usually an upward trend. The estimated daily intakes of antibiotics were on the levels of 0.001-1.0 μg/kg/day, mainly contributed by clarithromycin, ciprofloxacin and oxytetracycline, indicating a potential health risk based on the microbiological effect. A significantly positive correlation was found between DNA oxidative damage and exposure for four categories of antibiotics, conformed by both Spearman correlation and multiple linear regression analysis. The levels of 8-OHdG were 355 %, 239 %, 234 %, and 334 % higher with elevated levels of phenicols, macrolides, tetracyclines and sulfonamides from quartiles 2 to 4. Our results suggest that high-frequency consumption of takeaways may exacerbate oxidative stress trends through human exposure to antibiotics.
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Affiliation(s)
- Hao Yang
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
| | - Dong-Min Ye
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
| | - Ze-Zhao Lin
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
| | - Xiao-Ya Lin
- Sanya Woman and Children's Hospital, Sanya 572022, China
| | - Jia-Jun Yuan
- Sanya Woman and Children's Hospital, Sanya 572022, China; Shanghai Engineering Research Center of Intelligence Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China.
| | - Ying Guo
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China.
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4
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Song C, Sun X, Wang Y, Bülow L, Mecklenburg M, Wu C, Meng Q, Xie B. Activity fingerprinting of AMR β-lactamase towards a fast and accurate diagnosis. Front Cell Infect Microbiol 2023; 13:1222156. [PMID: 37743856 PMCID: PMC10512244 DOI: 10.3389/fcimb.2023.1222156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 08/16/2023] [Indexed: 09/26/2023] Open
Abstract
Antibiotic resistance has become a serious threat to global public health and economic development. Rapid and accurate identification of a patient status for antimicrobial resistance (AMR) are urgently needed in clinical diagnosis. Here we describe the development of an assay method for activity fingerprinting of AMR β-lactamases using panels of 7 β-lactam antibiotics in 35 min. New Deli Metallo β-lactamase-1 (NDM-1) and penicillinase were demonstrated as two different classes of β-lactamases. The panel consisted of three classes of antibiotics, including: penicillins (penicillin G, piperacillin), cephalosporins (cefepime, ceftriaxone, cefazolin) and carbapenems (meropenem and imipenem). The assay employed a scheme combines the catalytic reaction of AMR β-lactamases on antibiotic substrates with a flow-injected thermometric biosensor that allows the direct detection of the heat generated from the enzymatic catalysis, and eliminates the need for custom substrates and multiple detection schemes. In order to differentiate classes of β-lactamases, characterization of the enzyme activity under different catalytic condition, such as, buffer composition, ion strength and pH were investigated. This assay could provide a tool for fast diagnosis of patient AMR status which makes possible for the future accurate treatment with selected antibiotics.
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Affiliation(s)
- Chenchen Song
- Institute of Biomedical Sciences, The Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi Provincial Key Laboratory of Medical Molecular Cell Biology, Shanxi University, Taiyuan, China
| | - Xuan Sun
- Division of Pure and Applied Biochemistry, Department of Chemistry, Lund University, Lund, Sweden
- School of Basic Medical Sciences, Hubei University of Chinese Medicine, Wuhan, China
| | - Yao Wang
- Institute of Biomedical Sciences, The Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi Provincial Key Laboratory of Medical Molecular Cell Biology, Shanxi University, Taiyuan, China
| | - Leif Bülow
- Division of Pure and Applied Biochemistry, Department of Chemistry, Lund University, Lund, Sweden
| | | | - Changxin Wu
- Institute of Biomedical Sciences, The Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi Provincial Key Laboratory of Medical Molecular Cell Biology, Shanxi University, Taiyuan, China
| | - Qinglai Meng
- Institute of Biomedical Sciences, The Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi Provincial Key Laboratory of Medical Molecular Cell Biology, Shanxi University, Taiyuan, China
| | - Bin Xie
- Division of Pure and Applied Biochemistry, Department of Chemistry, Lund University, Lund, Sweden
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5
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Choi GH, Holzapfel WH, Todorov SD. Diversity of the bacteriocins, their classification and potential applications in combat of antibiotic resistant and clinically relevant pathogens. Crit Rev Microbiol 2023; 49:578-597. [PMID: 35731254 DOI: 10.1080/1040841x.2022.2090227] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 04/18/2022] [Accepted: 06/13/2022] [Indexed: 12/19/2022]
Abstract
There is almost a century since discovery of penicillin by Alexander Fleming, a century of enthusiasm, abuse, facing development of antibiotic-resistance and clear conclusion that the modern medicine needs a new type of antimicrobials. Bacteriocins produced by Gram-positive and Gram-negative bacteria, Archaea and Eukaryotes were widely explored as potential antimicrobials with several applications in food industry. In last two decades bacteriocins showed their potential as promising alternative therapeutic for the treatment of antibiotic-resistant pathogens. Bacteriocins can be characterised as highly selective antimicrobials and therapeutics with low cytotoxicity. Most probably in order to solve the problems associated with the increasing number of antibiotic-resistant bacteria, the application of natural or bioengineered bacteriocins in addition to synergistically acting preparations of bacteriocins and conventional antibiotics, can be the next step in combat versus drug-resistant pathogens. In this overview we focussed on diversity of specific lactic acid bacteria and their bacteriocins. Moreover, some additional examples of bacteriocins from non-lactic acid, Gram-positive and Gram-negative bacteria, Archaea and eukaryotic organisms are presented and discussed. Therapeutic properties of bacteriocins, their bioengineering and combined applications, together with conventional antibiotics, were evaluated with the scope of application in human and veterinary medicine for combating (multi-)drug-resistant pathogens.
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Affiliation(s)
- Gee-Hyeun Choi
- ProBacLab, Department of Advanced Convergence, Handong Global University, Pohang, Republic of Korea
| | - Wilhelm Heinrich Holzapfel
- Human Effective Microbes, Department of Advanced Convergence, Handong Global University, Pohang, Republic of Korea
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Li R, Feng D, Wang H, Zhang Z, Li N, Sun Y. Genetic diversity of non- Saccharomyces yeasts associated with spontaneous fermentation of Cabernet Sauvignon wines from Ningxia, China. Front Microbiol 2023; 14:1253969. [PMID: 37664125 PMCID: PMC10469914 DOI: 10.3389/fmicb.2023.1253969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 08/03/2023] [Indexed: 09/05/2023] Open
Abstract
The organoleptic profile and quality of wine are affected by the presence of different non-Saccharomyces species and strains. Therefore, the identification and characterization of non-Saccharomyces yeasts are the first step to understand their function, and to develop a better strain selection program for winemaking. This study investigated the biodiversity of non-Saccharomyces yeasts associated with spontaneous fermentation of Cabernet Sauvignon wines from five sub-regions (Shi Zuishan, Yinchuan, Yu Quanying, Qing Tongxia and Hong Sibu) in Ningxia, China. Yeast species were identified by sequencing the 26S rRNA D1/D2 region, and strains at the subspecies level were discriminated using tandem repeat-tRNA (TRtRNA) PCR analysis. A total of 524 yeast colonies were isolated, and 19 non-Saccharomyces yeast species belonging to 10 genera were identified, including Aureobasidium pullulans, Cryptococcus albidus, Cryptococcus sp., C. flavescens, C. terrestris, C. magnus, Cystofilobasidium ferigula, Candida zemplinina, Filobasidium magnum, Filobasidium sp., F. elegans, Hanseniaspora uvarum, Metschnikowia pimensis, M. pulcherrima, Naganishia albida, Pichia kluyveri, P. kudriavzevii, Rhodotorula glutinis and R. graminis. Hanseniaspora uvarum, C. zemplinina, and M. pulcherrima were the three most dominated species, while other non-Saccharomyces species were only present in the early stage of spontaneous fermentations at different levels. Further, for the yeast discrimination at strain level, 34 profiles were obtained by amplification with primer pairs TtRNASC/5CAG, while 40 profiles were obtained with primer pairs TtRNASC/ISSR-MB. This study explored the diversity of non-Saccharomyces species in Ningxia, China, and made an important contribution of genetic resources for further strain development.
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Affiliation(s)
- Ruirui Li
- School of Food Science and Engineering, Ningxia University, Yinchuan, Ningxia, China
| | - Danping Feng
- School of Food Science and Engineering, Ningxia University, Yinchuan, Ningxia, China
| | - Hui Wang
- College of Life Sciences, Northwest A and F University, Yangling, Shaanxi, China
| | - Zhong Zhang
- School of Life Sciences, Ningxia University, Yinchuan, Ningxia, China
| | - Na Li
- School of Food Science and Engineering, Ningxia University, Yinchuan, Ningxia, China
| | - Yue Sun
- College of Enology and Horticulture, Ningxia University, Yinchuan, Ningxia, China
- Wine Institution of Ningxia Region, Yinchuan, Ningxia, China
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7
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Wang S, Zhang L, Yang H, Li C, Wang Z, Xiong J, Xv Y, Wang Z, Shen J, Jiang H. The effects of UiO-66 ultrafine particles on the rapid detection of sulfonamides in milk: Adsorption performance and mechanism. Food Chem 2023; 417:135878. [PMID: 36917905 DOI: 10.1016/j.foodchem.2023.135878] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 02/20/2023] [Accepted: 03/03/2023] [Indexed: 03/09/2023]
Abstract
Nanoscale MOFs particles possess both excellent adsorption and dispersion properties. In this study, ultrafine particles UiO-66 (UP/UiO-66) with a particle size below 50 nm were synthesised by a template-controlled method. UP/UiO-66 was able to achieve a maximum adsorption capacity of 139.64 mg/g for 5 methoxylated sulfonamides. Adsorption studies showed that UP/UiO-66 adsorption of sulfonamides can be classified as a pseudo-secondary kinetic adsorption model for single molecular layer adsorption. ELISA (validated by Raman and molecular docking) showed that the sulfonamide molecule was still immunoreactive with antibodies after adsorption by UP/UiO-66. In 15 min, UP/UiO-66 could be used directly in the ELISA test for sulfonamides in milk without elution and separation. The LOQ (IC20) of UP/UiO-66-ELISA for sulfonamides in milk was 0.21-2.05 ng/mL. The ultrafine particle strategy of UiO-66 is expected to be applied to other MOFs and used as a general pretreatment material for residue monitoring in complex matrices.
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Affiliation(s)
- Sihan Wang
- Department of Veterinary Pharmacology and Toxicology, National Key Laboratory of Veterinary Public Health Security, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, People's Republic of China
| | - Liang Zhang
- Department of Veterinary Pharmacology and Toxicology, National Key Laboratory of Veterinary Public Health Security, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, People's Republic of China
| | - Huijuan Yang
- Department of Veterinary Pharmacology and Toxicology, National Key Laboratory of Veterinary Public Health Security, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, People's Republic of China
| | - Chenglong Li
- Department of Veterinary Pharmacology and Toxicology, National Key Laboratory of Veterinary Public Health Security, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, People's Republic of China
| | - Zile Wang
- Department of Veterinary Pharmacology and Toxicology, National Key Laboratory of Veterinary Public Health Security, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, People's Republic of China
| | - Jincheng Xiong
- Department of Veterinary Pharmacology and Toxicology, National Key Laboratory of Veterinary Public Health Security, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, People's Republic of China
| | - Yuliang Xv
- Department of Veterinary Pharmacology and Toxicology, National Key Laboratory of Veterinary Public Health Security, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, People's Republic of China
| | - Zhanhui Wang
- Department of Veterinary Pharmacology and Toxicology, National Key Laboratory of Veterinary Public Health Security, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, People's Republic of China
| | - Jianzhong Shen
- Department of Veterinary Pharmacology and Toxicology, National Key Laboratory of Veterinary Public Health Security, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, People's Republic of China
| | - Haiyang Jiang
- Department of Veterinary Pharmacology and Toxicology, National Key Laboratory of Veterinary Public Health Security, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, People's Republic of China.
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8
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Cao XE, Ngetich GC. The need to normalize failure. Nat Rev Chem 2023; 7:69-70. [PMID: 37117910 DOI: 10.1038/s41570-022-00454-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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9
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Elhamouly NA, Hewedy OA, Zaitoon A, Miraples A, Elshorbagy OT, Hussien S, El-Tahan A, Peng D. The hidden power of secondary metabolites in plant-fungi interactions and sustainable phytoremediation. FRONTIERS IN PLANT SCIENCE 2022; 13:1044896. [PMID: 36578344 PMCID: PMC9790997 DOI: 10.3389/fpls.2022.1044896] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 11/16/2022] [Indexed: 06/17/2023]
Abstract
The global environment is dominated by various small exotic substances, known as secondary metabolites, produced by plants and microorganisms. Plants and fungi are particularly plentiful sources of these molecules, whose physiological functions, in many cases, remain a mystery. Fungal secondary metabolites (SM) are a diverse group of substances that exhibit a wide range of chemical properties and generally fall into one of four main family groups: Terpenoids, polyketides, non-ribosomal peptides, or a combination of the latter two. They are incredibly varied in their functions and are often related to the increased fitness of the respective fungus in its environment, often competing with other microbes or interacting with plant species. Several of these metabolites have essential roles in the biological control of plant diseases by various beneficial microorganisms used for crop protection and biofertilization worldwide. Besides direct toxic effects against phytopathogens, natural metabolites can promote root and shoot development and/or disease resistance by activating host systemic defenses. The ability of these microorganisms to synthesize and store biologically active metabolites that are a potent source of novel natural compounds beneficial for agriculture is becoming a top priority for SM fungi research. In this review, we will discuss fungal-plant secondary metabolites with antifungal properties and the role of signaling molecules in induced and acquired systemic resistance activities. Additionally, fungal secondary metabolites mimic plant promotion molecules such as auxins, gibberellins, and abscisic acid, which modulate plant growth under biotic stress. Moreover, we will present a new trend regarding phytoremediation applications using fungal secondary metabolites to achieve sustainable food production and microbial diversity in an eco-friendly environment.
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Affiliation(s)
- Neveen Atta Elhamouly
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- Department of Botany, Faculty of Agriculture, Menoufia University, Shibin El-Kom, Egypt
| | - Omar A. Hewedy
- Department of Plant Agriculture, University of Guelph, Guelph, ON, Canada
| | - Amr Zaitoon
- Department of Food Science, University of Guelph, Guelph, ON, Canada
| | - Angelica Miraples
- Department of Plant Agriculture, University of Guelph, Guelph, ON, Canada
| | - Omnia T. Elshorbagy
- School of Natural and Environmental Sciences, Faculty of Science, Agriculture & Engineering, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Suzan Hussien
- Botany Department Faculty of Science, Mansoura University, Mansoura, Egypt
| | - Amira El-Tahan
- Plant Production Department, Arid Lands Cultivation Research Institute, the City of Scientific Research and Technological Applications, City of Scientific Research and Technological Applications (SRTA-City), Borg El Arab, Alexandria, Egypt
| | - Deliang Peng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
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Veríssimo GC, Serafim MSM, Kronenberger T, Ferreira RS, Honorio KM, Maltarollo VG. Designing drugs when there is low data availability: one-shot learning and other approaches to face the issues of a long-term concern. Expert Opin Drug Discov 2022; 17:929-947. [PMID: 35983695 DOI: 10.1080/17460441.2022.2114451] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Modern drug discovery generally is accessed by useful information from previous large databases or uncovering novel data. The lack of biological and/or chemical data tends to slow the development of scientific research and innovation. Here, approaches that may help provide solutions to generate or obtain enough relevant data or improve/accelerate existing methods within the last five years were reviewed. AREAS COVERED One-shot learning (OSL) approaches, structural modeling, molecular docking, scoring function space (SFS), molecular dynamics (MD), and quantum mechanics (QM) may be used to amplify the amount of available data to drug design and discovery campaigns, presenting methods, their perspectives, and discussions to be employed in the near future. EXPERT OPINION Recent works have successfully used these techniques to solve a range of issues in the face of data scarcity, including complex problems such as the challenging scenario of drug design aimed at intrinsically disordered proteins and the evaluation of potential adverse effects in a clinical scenario. These examples show that it is possible to improve and kickstart research from scarce available data to design and discover new potential drugs.
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Affiliation(s)
- Gabriel C Veríssimo
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Mateus Sá M Serafim
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Thales Kronenberger
- Department of Medical Oncology and Pneumology, Internal Medicine VIII, University Hospital of Tübingen, Tübingen, Germany.,School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Rafaela S Ferreira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Kathia M Honorio
- Escola de Artes, Ciências e Humanidades, Universidade de São Paulo (USP), São Paulo, Brazil.,Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Santo André, Brazil
| | - Vinícius G Maltarollo
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
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11
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Kurt A, Yonar T. The evaluation of parameter effects on cefoperazone treatability with new generation anodes. Sci Rep 2022; 12:14096. [PMID: 35982126 PMCID: PMC9388667 DOI: 10.1038/s41598-022-18486-0] [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: 06/09/2022] [Accepted: 08/12/2022] [Indexed: 11/09/2022] Open
Abstract
In this study it was aimed to investigate the treatability of cefoperazone with new generation Sb-doped SnO2-Ni anodes. For this purpose, it was studied with Sn/Sb/Ni: 500/8/1 anodes for the oxidation of aqueous solution containing cefoperazone antibiotic by addition of different types of electrolyte. Potassium chloride was found as the best electrolyte type affecting the electrochemical reactions positively even at lower concentrations (750 mg/L−1). At pH 8 the best results were obtained, which is the neutral pH value of the aqueous solution. 50 mA/cm2 was found as the best value for current density parameter, providing full mineralization just after 60 min of reaction. The removal efficiencies increased generally with the increase of current density, because active oxidants occur increasingly at higher current values. According to the results of the study it was seen that, electrochemical oxidation processes with Sn/Sb/Ni–Ti anodes could be carried out efficiently without need adding extra electrolyte (salt) and pH adjustment step for real wastewaters containing antibiotics. Thus, it was found an easy and economic way to perform electrochemical oxidation with Sn/Sb/Ni–Ti anodes for the wastewaters containing cefoperazone antibiotics.
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Affiliation(s)
- Ayşe Kurt
- Central Research Laboratory, Bursa Uludag University, Görükle Campus, 16059, Bursa, Turkey.
| | - Taner Yonar
- Environmental Engineering, Faculty of Engineering, Bursa Uludag University, Görükle Campus, 16059, Bursa, Turkey.
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12
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Pathogen-Specific Bactericidal Method Mediated by Conjugative Delivery of CRISPR-Cas13a Targeting Bacterial Endogenous Transcripts. Microbiol Spectr 2022; 10:e0130022. [PMID: 35950861 PMCID: PMC9430969 DOI: 10.1128/spectrum.01300-22] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The emergence of antibiotic-resistant bacteria threatens public health, and the use of broad-spectrum antibiotics often leads to unintended consequences, including disturbing the beneficial gut microbiota and resulting in secondary diseases. Therefore, developing a novel strategy that specifically kills pathogens without affecting the residential microbiota is desirable and urgently needed. Here, we report the development of a precise bactericidal system by taking advantage of CRISPR-Cas13a targeting endogenous transcripts of Salmonella enterica serovar Typhimurium delivered through a conjugative vehicle. In vitro, the CRISPR-Cas13a system exhibited specific killing, growth inhibition, and clearance of S. Typhimurium in mixed microbial flora. In a mouse infection model, the CRISPR-Cas13a system, when delivered by a donor Escherichia coli strain, significantly reduced S. Typhimurium colonization in the intestinal tract. Overall, the results demonstrate the feasibility and efficacy of the designed CRISPR-Cas13a system in selective killing of pathogens and broaden the utility of conjugation-based delivery of bactericidal approaches. IMPORTANCE Antibiotics with broad-spectrum activities are known to disturb both pathogens and beneficial gut microbiota and cause many undesired side effects, prompting increased interest in developing therapies that specifically eliminate pathogenic bacteria without damaging gut resident flora. To achieve this goal, we developed a strategy utilizing bacterial conjugation to deliver CRISPR-Cas13a programmed to specifically kill S. Typhimurium. This system produced pathogen-specific killing based on CRISPR RNA (crRNAs) targeting endogenous transcripts in pathogens and was shown to be effective in both in vitro and in vivo experiments. Additionally, the system can be readily delivered by conjugation and is adaptable for targeting different pathogens. With further optimization and improvement, the system has the potential to be used for biotherapy and microbial community modification.
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13
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Preventive Measures against Pandemics from the Beginning of Civilization to Nowadays—How Everything Has Remained the Same over the Millennia. J Clin Med 2022; 11:jcm11071960. [PMID: 35407571 PMCID: PMC8999828 DOI: 10.3390/jcm11071960] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/29/2022] [Accepted: 03/30/2022] [Indexed: 02/07/2023] Open
Abstract
As of 27 March 2022, the β-coronavirus severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has infected more than 487 million individuals worldwide, causing more than 6.14 million deaths. SARS-CoV-2 spreads through close contact, causing the coronavirus disease 2019 (COVID-19); thus, emergency lockdowns have been implemented worldwide to avoid its spread. COVID-19 is not the first infectious disease that humankind has had to face during its history. Indeed, humans have recurrently been threatened by several emerging pathogens that killed a substantial fraction of the population. Historical sources document that as early as between the 10th and the 6th centuries BCE, the authorities prescribed physical–social isolation, physical distancing, and quarantine of the infected subjects until the end of the disease, measures that strongly resemble containment measures taken nowadays. In this review, we show a historical and literary overview of different epidemic diseases and how the recommendations in the pre-vaccine era were, and still are, effective in containing the contagion.
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14
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Zhao W, Luo S, Wu H, Jiang X, He T, Hu X. A multi-label learning framework for predicting antibiotic resistance genes via dual-view modeling. Brief Bioinform 2022; 23:6546259. [PMID: 35272349 DOI: 10.1093/bib/bbac052] [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: 11/23/2021] [Revised: 01/27/2022] [Accepted: 01/31/2022] [Indexed: 11/13/2022] Open
Abstract
The increasing prevalence of antibiotic resistance has become a global health crisis. For the purpose of safety regulation, it is of high importance to identify antibiotic resistance genes (ARGs) in bacteria. Although culture-based methods can identify ARGs relatively more accurately, the identifying process is time-consuming and specialized knowledge is required. With the rapid development of whole genome sequencing technology, researchers attempt to identify ARGs by computing sequence similarity from public databases. However, these computational methods might fail to detect ARGs due to the low sequence identity to known ARGs. Moreover, existing methods cannot effectively address the issue of multidrug resistance prediction for ARGs, which is a great challenge to clinical treatments. To address the challenges, we propose an end-to-end multi-label learning framework for predicting ARGs. More specifically, the task of ARGs prediction is modeled as a problem of multi-label learning, and a deep neural network-based end-to-end framework is proposed, in which a specific loss function is introduced to employ the advantage of multi-label learning for ARGs prediction. In addition, a dual-view modeling mechanism is employed to make full use of the semantic associations among two views of ARGs, i.e. sequence-based information and structure-based information. Extensive experiments are conducted on publicly available data, and experimental results demonstrate the effectiveness of the proposed framework on the task of ARGs prediction.
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Affiliation(s)
- Weizhong Zhao
- School of Computer, Central China Normal University, Wuhan, Hubei, 430079, PR China
| | - Shujie Luo
- School of Computer, Central China Normal University, Wuhan, Hubei, 430079, PR China
| | - Haifang Wu
- School of Computer, Central China Normal University, Wuhan, Hubei, 430079, PR China
| | - Xingpeng Jiang
- School of Computer, Central China Normal University, Wuhan, Hubei, 430079, PR China
| | - Tingting He
- School of Computer, Central China Normal University, Wuhan, Hubei, 430079, PR China
| | - Xiaohua Hu
- College of Computing & Informatics, Drexel University, Philadelphia, PA 19104, USA
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15
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Cui X, Lü Y, Yue C. Development and Research Progress of Anti-Drug Resistant Bacteria Drugs. Infect Drug Resist 2022; 14:5575-5593. [PMID: 34992385 PMCID: PMC8711564 DOI: 10.2147/idr.s338987] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 11/12/2021] [Indexed: 01/10/2023] Open
Abstract
Bacterial resistance has become increasingly serious because of the widespread use and abuse of antibiotics. In particular, the emergence of multidrug-resistant bacteria has posed a serious threat to human public health and attracted the attention of the World Health Organization (WHO) and the governments of various countries. Therefore, the establishment of measures against bacterial resistance and the discovery of new antibacterial drugs are increasingly urgent to better contain the emergence of bacterial resistance and provide a reference for the development of new antibacterial drugs. In this review, we discuss some antibiotic drugs that have been approved for clinical use and a partial summary of the meaningful research results of anti-drug resistant bacterial drugs in different fields, including the antibiotic drugs approved by the FDA from 2015 to 2020, the potential drugs against drug-resistant bacteria, the new molecules synthesized by chemical modification, combination therapy, drug repurposing, immunotherapy and other therapies.
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Affiliation(s)
- Xiangyi Cui
- Key Laboratory of Microbial Drugs Innovation and Transformation of Yan'an, School of Basic Medicine, Yan'an University, Yan'an, 716000, Shaanxi, People's Republic of China
| | - Yuhong Lü
- Key Laboratory of Microbial Drugs Innovation and Transformation of Yan'an, School of Basic Medicine, Yan'an University, Yan'an, 716000, Shaanxi, People's Republic of China.,Shaanxi Engineering & Technological Research Center for Conversation & Utilization of Regional Biological Resources, Yan'an University, Yan'an, 716000, Shaanxi, People's Republic of China
| | - Changwu Yue
- Key Laboratory of Microbial Drugs Innovation and Transformation of Yan'an, School of Basic Medicine, Yan'an University, Yan'an, 716000, Shaanxi, People's Republic of China.,Shaanxi Engineering & Technological Research Center for Conversation & Utilization of Regional Biological Resources, Yan'an University, Yan'an, 716000, Shaanxi, People's Republic of China
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16
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Nickles G, Ludwikoski I, Bok JW, Keller NP. Comprehensive Guide to Extracting and Expressing Fungal Secondary Metabolites with Aspergillus fumigatus as a Case Study. Curr Protoc 2021; 1:e321. [PMID: 34958718 DOI: 10.1002/cpz1.321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Fungal secondary metabolites (SMs) have captured the interest of natural products researchers in academia and industry for decades. In recent years, the high rediscovery rate of previously characterized metabolites is making it increasingly difficult to uncover novel compounds. Additionally, the vast majority of fungal SMs reside in genetically intractable fungi or are silent under normal laboratory conditions in genetically tractable fungi. The fungal natural products community has broadly overcome these barriers by altering the physical growth conditions of the fungus and heterologous/homologous expression of biosynthetic gene cluster regulators or proteins. The protocols described here summarize vital methodologies needed when researching SM production in fungi. We also summarize the growth conditions, genetic backgrounds, and extraction protocols for every published SM in Aspergillus fumigatus, enabling readers to easily replicate the production of previously characterized SMs. Readers will also be equipped with the tools for developing their own strategy for expressing and extracting SMs from their given fungus or a suitable heterologous model system. © 2021 Wiley Periodicals LLC. Basic Protocol 1: Making glycerol stocks from spore suspensions Alternate Protocol 1: Creating glycerol stocks from non-sporulating filamentous fungi Basic Protocol 2: Activating spore-suspension glycerol stocks Basic Protocol 3: Extracting secondary metabolites from Aspergillus spp grown on solid medium Alternate Protocol 2: Extracting secondary metabolites from Aspergillus spp using ethyl acetate Alternate Protocol 3: High-volume metabolite extraction using ethyl acetate Alternate Protocol 4: Extracting secondary metabolites from Aspergillus spp in liquid medium Support Protocol: Creating an overlay culture Basic Protocol 4: Extracting DNA from filamentous fungi Basic Protocol 5: Creating a DNA construct with double-joint PCR Alternate Protocol 5: Creating a DNA construct with yeast recombineering Basic Protocol 6: Transformation of Aspergillus spp Basic Protocol 7: Co-culturing fungi and bacteria for extraction of secondary metabolites.
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Affiliation(s)
- Grant Nickles
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, Wisconsin
| | - Isabelle Ludwikoski
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, Wisconsin
| | - Jin Woo Bok
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, Wisconsin
| | - Nancy P Keller
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, Wisconsin.,Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin
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17
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Singh RB, Das S, Chodosh J, Sharma N, Zegans ME, Kowalski RP, Jhanji V. Paradox of complex diversity: Challenges in the diagnosis and management of bacterial keratitis. Prog Retin Eye Res 2021; 88:101028. [PMID: 34813978 DOI: 10.1016/j.preteyeres.2021.101028] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 11/09/2021] [Accepted: 11/12/2021] [Indexed: 12/12/2022]
Abstract
Bacterial keratitis continues to be one of the leading causes of corneal blindness in the developed as well as the developing world, despite swift progress since the dawn of the "anti-biotic era". Although, we are expeditiously developing our understanding about the different causative organisms and associated pathology leading to keratitis, extensive gaps in knowledge continue to dampen the efforts for early and accurate diagnosis, and management in these patients, resulting in poor clinical outcomes. The ability of the causative bacteria to subdue the therapeutic challenge stems from their large genome encoding complex regulatory networks, variety of unique virulence factors, and rapid secretion of tissue damaging proteases and toxins. In this review article, we have provided an overview of the established classical diagnostic techniques and therapeutics for keratitis caused by various bacteria. We have extensively reported our recent in-roads through novel tools for accurate diagnosis of mono- and poly-bacterial corneal infections. Furthermore, we outlined the recent progress by our group and others in understanding the sub-cellular genomic changes that lead to antibiotic resistance in these organisms. Finally, we discussed in detail, the novel therapies and drug delivery systems in development for the efficacious management of bacterial keratitis.
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Affiliation(s)
- Rohan Bir Singh
- Department of Ophthalmology, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA; Department of Ophthalmology, Leiden University Medical Center, 2333, ZA Leiden, the Netherlands
| | - Sujata Das
- Cornea and Anterior Segment Services, LV Prasad Eye Institute, Bhubaneshwar, India
| | - James Chodosh
- Department of Ophthalmology, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA
| | - Namrata Sharma
- Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India
| | - Michael E Zegans
- Department of Ophthalmology, Geisel School of Medicine at Dartmouth, Hanover, NH, USA
| | - Regis P Kowalski
- Department of Ophthalmology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA; The Charles T Campbell Ophthalmic Microbiology Laboratory, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Vishal Jhanji
- Department of Ophthalmology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA; The Charles T Campbell Ophthalmic Microbiology Laboratory, University of Pittsburgh Medical Center, Pittsburgh, PA, USA.
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Read GJM, Shorrock S, Walker GH, Salmon PM. State of science: evolving perspectives on 'human error'. ERGONOMICS 2021; 64:1091-1114. [PMID: 34243698 DOI: 10.1080/00140139.2021.1953615] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 07/02/2021] [Indexed: 06/13/2023]
Abstract
This paper reviews the key perspectives on human error and analyses the core theories and methods developed and applied over the last 60 years. These theories and methods have sought to improve our understanding of what human error is, and how and why it occurs, to facilitate the prediction of errors and use these insights to support safer work and societal systems. Yet, while this area of Ergonomics and Human Factors (EHF) has been influential and long-standing, the benefits of the 'human error approach' to understanding accidents and optimising system performance have been questioned. This state of science review analyses the construct of human error within EHF. It then discusses the key conceptual difficulties the construct faces in an era of systems EHF. Finally, a way forward is proposed to prompt further discussion within the EHF community. Practitioner statement This state-of-science review discusses the evolution of perspectives on human error as well as trends in the theories and methods applied to understand, prevent and mitigate error. It concludes that, although a useful contribution has been made, we must move beyond a focus on an individual error to systems failure to understand and optimise whole systems.
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Affiliation(s)
- Gemma J M Read
- Centre for Human Factors and Sociotechnical Systems, University of the Sunshine Coast, Maroochydore, Australia
| | - Steven Shorrock
- Centre for Human Factors and Sociotechnical Systems, University of the Sunshine Coast, Maroochydore, Australia
- EUROCONTROL, Brétigny-sur-Orge, France
| | - Guy H Walker
- Centre for Human Factors and Sociotechnical Systems, University of the Sunshine Coast, Maroochydore, Australia
- Centre for Sustainable Road Freight, Heriot-Watt University, Edinburgh, UK
| | - Paul M Salmon
- Centre for Human Factors and Sociotechnical Systems, University of the Sunshine Coast, Maroochydore, Australia
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19
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Mašková L, Janská P, Klimša V, Knejzlík Z, Tokárová V, Kašpar O. Development of compartmentalized antibacterial systems based on encapsulated alliinase. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.05.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Bahr G, González LJ, Vila AJ. Metallo-β-lactamases in the Age of Multidrug Resistance: From Structure and Mechanism to Evolution, Dissemination, and Inhibitor Design. Chem Rev 2021; 121:7957-8094. [PMID: 34129337 PMCID: PMC9062786 DOI: 10.1021/acs.chemrev.1c00138] [Citation(s) in RCA: 96] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Antimicrobial resistance is one of the major problems in current practical medicine. The spread of genes coding for resistance determinants among bacteria challenges the use of approved antibiotics, narrowing the options for treatment. Resistance to carbapenems, last resort antibiotics, is a major concern. Metallo-β-lactamases (MBLs) hydrolyze carbapenems, penicillins, and cephalosporins, becoming central to this problem. These enzymes diverge with respect to serine-β-lactamases by exhibiting a different fold, active site, and catalytic features. Elucidating their catalytic mechanism has been a big challenge in the field that has limited the development of useful inhibitors. This review covers exhaustively the details of the active-site chemistries, the diversity of MBL alleles, the catalytic mechanism against different substrates, and how this information has helped developing inhibitors. We also discuss here different aspects critical to understand the success of MBLs in conferring resistance: the molecular determinants of their dissemination, their cell physiology, from the biogenesis to the processing involved in the transit to the periplasm, and the uptake of the Zn(II) ions upon metal starvation conditions, such as those encountered during an infection. In this regard, the chemical, biochemical and microbiological aspects provide an integrative view of the current knowledge of MBLs.
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Affiliation(s)
- Guillermo Bahr
- Instituto de Biología Molecular y Celular de Rosario (IBR), CONICET, Universidad Nacional de Rosario, Ocampo y Esmeralda S/N, 2000 Rosario, Argentina
- Area Biofísica, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, 2000 Rosario, Argentina
| | - Lisandro J. González
- Instituto de Biología Molecular y Celular de Rosario (IBR), CONICET, Universidad Nacional de Rosario, Ocampo y Esmeralda S/N, 2000 Rosario, Argentina
- Area Biofísica, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, 2000 Rosario, Argentina
| | - Alejandro J. Vila
- Instituto de Biología Molecular y Celular de Rosario (IBR), CONICET, Universidad Nacional de Rosario, Ocampo y Esmeralda S/N, 2000 Rosario, Argentina
- Area Biofísica, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, 2000 Rosario, Argentina
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21
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Worldwide Clinical Demand for Antibiotics: Is It a Real Countdown? METHODS IN MOLECULAR BIOLOGY (CLIFTON, N.J.) 2021; 2296:3-15. [PMID: 33977439 DOI: 10.1007/978-1-0716-1358-0_1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Antibiotics are antimicrobial agents primarily produced by certain bacteria and fungi. These drugs are some of the biological weapons used by the producers to survive in their dense and multispecies communities where the resources could be scarce. Thus, the microorganisms, as antibiotic producers, also have the skills to avoid the antibiotic affect from immemorial time. However, the antibiotic resistance is a current global health threat because of the overuse, abuse, or use of antibiotics. Nowadays, resistance to all the antibiotic classes has emerged, which results in 700,000 annual deaths due to the drug-resistant diseases, and forecasts are dramatic for the coming years. This chapter reviews the evolution of the antibiotics discovery, the worldwide antibiotics resistances threat, their economical and clinical impact, as well as how the academia and the enterprises are facing the need of new antibiotics discovery or antimicrobial therapies implementation.
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22
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Jota Baptista CV, Faustino-Rocha AI, Oliveira PA. Animal Models in Pharmacology: A Brief History Awarding the Nobel Prizes for Physiology or Medicine. Pharmacology 2021; 106:356-368. [PMID: 34023819 DOI: 10.1159/000516240] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 03/24/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND The Nobel Prize of Physiology or Medicine (NPPM) has recognized the work of 222 scientists from different nationalities, from 1901 until 2020. From the total, 186 award researchers used animal models in their projects, and 21 were attributed to scientists and projects directly related to Pharmacology. In the most recent years, genetics is a dominant scientific area, while at the beginning of the 20th century, most of the studies were more related to anatomy, cytology, and physiology. SUMMARY Mammalian models were used in 144 NPPM projects, being rodents the most used group of species. Moreover, 92 researchers included domestic species in their work. The criteria used to choose the species, the number of animals used and the experimental protocol is always debatable and dependent on the scientific area of the study; however, the 3R's principle can be applied to most scientific fields. Independently of the species, the animal model can be classified in different types and criteria, depending on their ecology, genetics, and mode of action. Key-Messages: The use of animal models in NPPM awarded projects, namely in Pharmacology, illustrates their importance, need and benefit to improve scientific knowledge and create solutions. In the future, with the contribute of technology, it might be possible to refine the use of animal models in pharmacology studies.
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Affiliation(s)
- Catarina V Jota Baptista
- Departament de Medicina i Cirurgia Animals, Edifici V. Facultat de Veterinària, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Ana I Faustino-Rocha
- Department of Zootechnics, School of Sciences and Technology, Évora, Portugal.,Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
| | - Paula A Oliveira
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.,Department of Veterinary Sciences, UTAD, Vila Real, Portugal
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Augie BM, McInerney PA, van Zyl RL, Miot J. Educational antimicrobial stewardship programs in medical schools: a scoping review protocol. JBI Evid Synth 2021; 18:1028-1035. [PMID: 32813355 DOI: 10.11124/jbisrir-d-19-00142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
OBJECTIVE The objective of this scoping review is to identify the available evidence on antimicrobial stewardship programs for teaching medical students about rational antimicrobial use, including the content taught and the method of instruction used. INTRODUCTION Antibiotics are life-saving drugs and their discovery is one of the most important advances of the 20th century. They have transformed modern medicine by playing a critical role in the management of infectious diseases. However, the rapid development of resistance of pathogens to antibiotics is gradually affecting this initial success. Antimicrobial stewardship programs have been shown to reduce the burden of antimicrobial resistance in hospitals. INCLUSION CRITERIA This scoping review will consider papers conducted in medical school curricula to improve the prescribing of antimicrobial medication. Studies that include other health profession students, such as nursing, pharmacy, or dentistry students, will be excluded. Studies published in English from 1996 onwards will be included. METHODS Databases to be searched are PubMed, Wiley Online library, CINAHL Complete, Web of Knowledge, Scopus and Education Resources Information Center. Unpublished studies and gray literature will be included. Searching will follow a three-step process and will be conducted by two reviewers. Data will be extracted by two independent reviewers. Any disagreements that arise between the reviewers during the study selection process or data extraction will be resolved through discussion, or with a third reviewer. Results will be presented in tabular or diagrammatic form, together with a narrative summary.
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Affiliation(s)
- Bashar M Augie
- Pharmacology Division, Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Patricia A McInerney
- Centre for Health Science Education, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.,The Wits-JBI Centre for Evidenced-Based Practice: A JBI Affiliated Group
| | - Robyn L van Zyl
- Pharmacology Division, Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Jacqui Miot
- Health Economics and Epidemiology Research Office, Department of Internal Medicine, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Huang Y, Jiang J, Wang Y, Chen J, Xi J. Nanozymes as Enzyme Inhibitors. Int J Nanomedicine 2021; 16:1143-1155. [PMID: 33603373 PMCID: PMC7887156 DOI: 10.2147/ijn.s294871] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 01/28/2021] [Indexed: 01/02/2023] Open
Abstract
Nanozyme is a type of nanomaterial with intrinsic enzyme-like activity. Following the discovery of nanozymes in 2007, nanozyme technology has become an emerging field bridging nanotechnology and biology, attracting research from multi-disciplinary areas focused on the design and synthesis of catalytically active nanozymes. However, various types of enzymes can be mimicked by nanomaterials, and our current understanding of nanozymes as enzyme inhibitors is limited. Here, we provide a brief overview of the utility of nanozymes as inhibitors of enzymes, such as R-chymotrypsin (ChT), β-galactosidase (β-Gal), β-lactamase, and mitochondrial F0F1-ATPase, and the mechanisms underlying inhibitory activity. The advantages, challenges and future research directions of nanozymes as enzyme inhibitors for biomedical research are further discussed.
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Affiliation(s)
- Yaling Huang
- Institute of Translational Medicine, Department of Pharmacology, School of Medicine, Yangzhou University, Yangzhou, Jiangsu, 225001, People’s Republic of China
| | - Jian Jiang
- Institute of Translational Medicine, Department of Pharmacology, School of Medicine, Yangzhou University, Yangzhou, Jiangsu, 225001, People’s Republic of China
| | - Yanqiu Wang
- Institute of Translational Medicine, Department of Pharmacology, School of Medicine, Yangzhou University, Yangzhou, Jiangsu, 225001, People’s Republic of China
| | - Jie Chen
- Institute of Translational Medicine, Department of Pharmacology, School of Medicine, Yangzhou University, Yangzhou, Jiangsu, 225001, People’s Republic of China
| | - Juqun Xi
- Institute of Translational Medicine, Department of Pharmacology, School of Medicine, Yangzhou University, Yangzhou, Jiangsu, 225001, People’s Republic of China
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou, Jiangsu, 225001, People’s Republic of China
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25
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Overcoming bacterial resistance to antibiotics: the urgent need – a review. ANNALS OF ANIMAL SCIENCE 2021. [DOI: 10.2478/aoas-2020-0098] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The discovery of antibiotics is considered one of the most crucial breakthroughs in medicine and veterinary science in the 20th century. From the very beginning, this type of drug was used as a ‘miraculous cure’ for every type of infection. In addition to their therapeutic uses, antibiotics were also used for disease prevention and growth promotion in livestock. Though this application was banned in the European Union in 2006, antibiotics are still used in this way in countries all over the world. The unlimited and unregulated use of antibiotics has increased the speed of antibiotic resistance’s spread in different types of organisms. This phenomenon requires searching for new strategies to deal with hard-to-treat infections. The antimicrobial activity of some plant derivatives and animal products has been known since ancient times. At the beginning of this century, even more substances, such as antimicrobial peptides, were considered very promising candidates for becoming new alternatives to commonly used antimicrobials. However, many preclinical and clinical trials ended without positive results. A variety of strategies to fight microbes exist, but we are a long way from approving them as therapies. This review begins with the discovery of antibiotics, covers the modes of action of select antimicrobials, and ends with a literature review of the newest potential alternative approaches to overcoming the drug resistance phenomenon.
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Kosalková K, Sánchez-Orejas IC, Cueto L, García-Estrada C. Penicillium chrysogenum Fermentation and Analysis of Benzylpenicillin by Bioassay and HPLC. Methods Mol Biol 2021; 2296:195-207. [PMID: 33977449 DOI: 10.1007/978-1-0716-1358-0_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Penicillium chrysogenum, recently re-identified as Penicillium rubens, is the microorganism used for the industrial production of penicillin. This filamentous fungus (mold) probably represents the best example of adaptation of a microorganism to industrial production conditions and therefore, it can be considered as a model organism for the study of primary and secondary metabolism under a highly stressful environment. In this regard, biosynthesis and production of benzylpenicillin can be used as an interesting phenotypic trait for those studies. In this chapter, we describe P. chrysogenum culture procedures for the production of benzylpenicillin and the process of antibiotic quantitation either by bioassay or by high-performance liquid chromatography (HPLC).
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Affiliation(s)
- Katarina Kosalková
- Instituto de Biotecnología de León (INBIOTEC), Parque Científico de León, León, Spain
| | | | - Laura Cueto
- Instituto de Biotecnología de León (INBIOTEC), Parque Científico de León, León, Spain
| | - Carlos García-Estrada
- Instituto de Biotecnología de León (INBIOTEC), Parque Científico de León, León, Spain.
- Área de Toxicología, Departamento de Ciencias Biomédicas, Universidad de León, León, Spain.
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27
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Lalchhandama K. History of penicillin. WIKIJOURNAL OF MEDICINE 2021. [DOI: 10.15347/wjm/2021.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The history of penicillin was shaped by the contributions of numerous scientists. The ultimate result was the discovery of the mould Penicillium's antibacterial activity and the subsequent development of penicillins, the most widely used antibiotics. Following an accidental discovery of the mould, later identified as Penicillium rubens, as the source of the antibacterial principle (1928) and the production of a pure compound (1942), penicillin became the first naturally derived antibiotic. There is anecdotal evidence of ancient societies using moulds to treat infections and of awareness that various moulds inhibited bacterial growth. However, it is not clear if Penicillium species were the species traditionally used or if the antimicrobial substances produced were penicillin. In 1928, Alexander Fleming was the first to discover the antibacterial substance secreted by the Penicillium mould and concentrate the active substance involved, giving it the name penicillin. His success in treating Harry Lambert's streptococcal meningitis, an infection until then fatal, proved to be a critical moment in the medical use of penicillin. Many later scientists were involved in the stabilisation and mass production of penicillin and in the search for more productive strains of Penicillium. Among the most important were Ernst Chain and Howard Florey, who shared with Fleming the 1945 Nobel Prize in Physiology or Medicine.
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Wang C, Tang J, Qiu S. Profiling of Fungal Diversity and Fermentative Yeasts in Traditional Chinese Xiaoqu. Front Microbiol 2020; 11:2103. [PMID: 32983066 PMCID: PMC7489096 DOI: 10.3389/fmicb.2020.02103] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 08/10/2020] [Indexed: 11/23/2022] Open
Abstract
To increase the safety and quality of baijiu and rice wine in China, controlling the use of traditional Xiaoqu by studying the beneficial yeasts present has recently been considered. The fungal diversity of six Chinese Xiaoqu including five traditional and one commercial samples was investigated to screen fermentative yeasts with low yields of higher alcohols. A high throughput sequencing approach detected fifteen fungal species with relative abundance higher than 1%, and displayed dissimilarities of fungal diversity among Xiaoqu samples. The 15 fungal species were composed of 11 filamentous fungi with Rhizopus arrhizus as the most common specie and four yeast species, containing Hyphopichia burtonii, Saccharomyces cerevisiae, Saccharomycopsis fibuligera, and Saccharomycopsis malanga. Classic culture-dependent approaches, including 5.8S-ITS-RFLP analysis and D1/D2 sequencing of the 26S rRNA gene, identified nine yeast species in the five traditional Chinese Xiaoqu. In addition to the four yeast species also detected by high throughput sequencing approach, the other five yeast species isolated were Clavispora lusitaniae, Cryptococcus neoformans, Komagataella pastoris, Trichosporon asahii, and Wickerhamomyces anomalus. Further micro-fermentations of rice wine were performed using 19 single yeast isolates, and after the fermentation of rice wine, higher alcohols and ethanol were analyzed by gas chromatography. Two yeast strains, Saccharomyces cerevisiae FBKL2.8022 and Wickerhamomyces anomalus FBKL2.8023, were found to have low yields of higher alcohols and could produce 11.70%vol and 7.10%vol ethanol separately. This study for the first time, to the best of our knowledge, explored the fungal resources in traditional Xiaoqu from different regions of Guizhou, China. The screened S. cerevisiae and W. anomalus strains could be used to establish specific starters to promote the standardization of the production of baijiu and rice wine.
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Affiliation(s)
- Chunxiao Wang
- Province Key Laboratory of Fermentation Engineering and Biopharmacy, School of Liquor and Food Engineering, Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, Guiyang, China
| | - Jiadai Tang
- Province Key Laboratory of Fermentation Engineering and Biopharmacy, School of Liquor and Food Engineering, Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, Guiyang, China.,Department of Liquor Making Engineering, Moutai Institute, Renhuai, China
| | - Shuyi Qiu
- Province Key Laboratory of Fermentation Engineering and Biopharmacy, School of Liquor and Food Engineering, Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, Guiyang, China
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29
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Alcock BP, Raphenya AR, Lau TTY, Tsang KK, Bouchard M, Edalatmand A, Huynh W, Nguyen ALV, Cheng AA, Liu S, Min SY, Miroshnichenko A, Tran HK, Werfalli RE, Nasir JA, Oloni M, Speicher DJ, Florescu A, Singh B, Faltyn M, Hernandez-Koutoucheva A, Sharma AN, Bordeleau E, Pawlowski AC, Zubyk HL, Dooley D, Griffiths E, Maguire F, Winsor GL, Beiko RG, Brinkman FSL, Hsiao WWL, Domselaar GV, McArthur AG. CARD 2020: antibiotic resistome surveillance with the comprehensive antibiotic resistance database. Nucleic Acids Res 2020; 48:D517-D525. [PMID: 31665441 PMCID: PMC7145624 DOI: 10.1093/nar/gkz935] [Citation(s) in RCA: 1137] [Impact Index Per Article: 284.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 10/03/2019] [Accepted: 10/08/2019] [Indexed: 02/06/2023] Open
Abstract
The Comprehensive Antibiotic Resistance Database (CARD; https://card.mcmaster.ca) is a curated resource providing reference DNA and protein sequences, detection models and bioinformatics tools on the molecular basis of bacterial antimicrobial resistance (AMR). CARD focuses on providing high-quality reference data and molecular sequences within a controlled vocabulary, the Antibiotic Resistance Ontology (ARO), designed by the CARD biocuration team to integrate with software development efforts for resistome analysis and prediction, such as CARD's Resistance Gene Identifier (RGI) software. Since 2017, CARD has expanded through extensive curation of reference sequences, revision of the ontological structure, curation of over 500 new AMR detection models, development of a new classification paradigm and expansion of analytical tools. Most notably, a new Resistomes & Variants module provides analysis and statistical summary of in silico predicted resistance variants from 82 pathogens and over 100 000 genomes. By adding these resistance variants to CARD, we are able to summarize predicted resistance using the information included in CARD, identify trends in AMR mobility and determine previously undescribed and novel resistance variants. Here, we describe updates and recent expansions to CARD and its biocuration process, including new resources for community biocuration of AMR molecular reference data.
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Affiliation(s)
- Brian P Alcock
- David Braley Centre for Antibiotic Discovery, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Amogelang R Raphenya
- David Braley Centre for Antibiotic Discovery, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Tammy T Y Lau
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Kara K Tsang
- David Braley Centre for Antibiotic Discovery, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Mégane Bouchard
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Bachelor of Health Sciences Program, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Arman Edalatmand
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - William Huynh
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Anna-Lisa V Nguyen
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Bachelor of Health Sciences Program, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Annie A Cheng
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Sihan Liu
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Sally Y Min
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Anatoly Miroshnichenko
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Hiu-Ki Tran
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Rafik E Werfalli
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Jalees A Nasir
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Martins Oloni
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - David J Speicher
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Alexandra Florescu
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Bachelor of Health Sciences Program, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Bhavya Singh
- Honours Biology Program, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Mateusz Faltyn
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Bachelor of Arts & Science Program, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | | | - Arjun N Sharma
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Emily Bordeleau
- David Braley Centre for Antibiotic Discovery, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Andrew C Pawlowski
- Department of Genetics, Harvard Medical School, Harvard University, Boston, MA 02115, USA
| | - Haley L Zubyk
- David Braley Centre for Antibiotic Discovery, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Damion Dooley
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, V6T 2B5, British Columbia, Canada
| | - Emma Griffiths
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - Finlay Maguire
- Faculty of Computer Science, Dalhousie University, Halifax, Nova Scotia, B3H 1W5, Canada
| | - Geoff L Winsor
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - Robert G Beiko
- Faculty of Computer Science, Dalhousie University, Halifax, Nova Scotia, B3H 1W5, Canada
| | - Fiona S L Brinkman
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - William W L Hsiao
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, V6T 2B5, British Columbia, Canada.,Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada.,British Columbia Centre for Disease Control Public Health Laboratory, Vancouver, British Columbia, V5Z 4R4, Canada
| | - Gary V Domselaar
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, R3E 3R2, Canada.,Department of Medical Microbiology and Infectious Diseases, Max Rady College of Medicine, University of Manitoba, Winnipeg, Manitoba, R3E 0J9, Canada
| | - Andrew G McArthur
- David Braley Centre for Antibiotic Discovery, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, L8S 4K1, Canada.,Department of Biochemistry and Biomedical Science, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
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30
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Sand M. Did Alexander Fleming Deserve the Nobel Prize? SCIENCE AND ENGINEERING ETHICS 2020; 26:899-919. [PMID: 31673983 PMCID: PMC7089882 DOI: 10.1007/s11948-019-00149-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 10/16/2019] [Indexed: 06/10/2023]
Abstract
Penicillin is a serendipitous discovery par excellence. But, what does this say about Alexander Fleming's praiseworthiness? Clearly, Fleming would not have received the Nobel Prize, had not a mould accidently entered his laboratory. This seems paradoxical, since it was beyond his control. The present article will first discuss Fleming's discovery of Penicillin as an example of moral luck in science and technology and critically assess some common responses to this problem. Second, the Control Principle that says that people are not responsible for things beyond their control will be defended. An implication of this principle is that Alexander Fleming's desert, which is based on his epistemic skills, remains untouched by luck. Third, by distinguishing different notions of praiseworthiness, a way to resolve the paradox of moral luck will be elaborated. Desert provides only a pro tanto reason to determine whether someone is an appropriate addressee of reward. Here, luck can make a difference. Forth, it will be argued that stimulating the quest for socially beneficial science provides a compelling reason to treat scientists with equal desert differently. Penicillin provides striking evidence for the importance of this quest and showcasing it incentivizes the making of socially beneficial science. Ultimately, it will be justified why Fleming deserved the Nobel Prize in at least one sense of the concept.
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Affiliation(s)
- Martin Sand
- Department of Values, Technology and Innovation, Faculty of Technology, Policy and Management, TU Delft, Jaffalaan 5, 2628 BX, Delft, The Netherlands.
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31
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Xie X, Huang S, Zheng J, Ouyang G. Trends in sensitive detection and rapid removal of sulfonamides: A review. J Sep Sci 2020; 43:1634-1652. [PMID: 32043724 DOI: 10.1002/jssc.201901341] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 02/03/2020] [Accepted: 02/05/2020] [Indexed: 12/15/2022]
Abstract
Sulfonamides in environmental water, food, and feed are a major concern for both aquatic ecosystems and public health, because they may lead to the health risk of drug resistance. Thus, numerous sensitive detection and rapid removal methodologies have been established. This review summarizes the sample preparation techniques and instrumental methods used for sensitive detection of sulfonamides. Additionally, adsorption and photocatalysis for the rapid removal of sulfonamides are also discussed. This review provides a comprehensive perspective on future sulfonamide analyses that have good performance, and on the basic methods for the rapid removal of sulfonamides.
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Affiliation(s)
- Xintong Xie
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou, P. R. China
| | - Shuyao Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou, P. R. China
| | - Juan Zheng
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou, P. R. China
| | - Gangfeng Ouyang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou, P. R. China
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32
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Banerji A, Jahne M, Herrmann M, Brinkman N, Keely S. Bringing Community Ecology to Bear on the Issue of Antimicrobial Resistance. Front Microbiol 2019; 10:2626. [PMID: 31803161 PMCID: PMC6872637 DOI: 10.3389/fmicb.2019.02626] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 10/29/2019] [Indexed: 12/14/2022] Open
Abstract
Antimicrobial resistance (AMR) is a global concern, pertaining not only to human health but also to the health of industry and the environment. AMR research has traditionally focused on genetic exchange mechanisms and abiotic environmental constraints, leaving important aspects of microbial ecology unresolved. The genetic and ecological aspects of AMR, however, not only contribute separately to the problem but also are interrelated. For example, mutualistic associations among microbes such as biofilms can both serve as a barrier to antibiotic penetration and a breeding ground for horizontal exchange of antimicrobial resistance genes (ARGs). In this review, we elucidate how species interactions promote and impede the establishment, maintenance, and spread of ARGs and indicate how management initiatives might benefit from leveraging the principles and tools of community ecology to better understand and manipulate the processes underlying AMR.
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Affiliation(s)
- Aabir Banerji
- Office of Research and Development, Center for Environmental Measurement and Modeling, US Environmental Protection Agency, Cincinnati, OH, United States
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33
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Barreiro C, García-Estrada C. Proteomics and Penicillium chrysogenum: Unveiling the secrets behind penicillin production. J Proteomics 2018; 198:119-131. [PMID: 30414515 DOI: 10.1016/j.jprot.2018.11.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 10/27/2018] [Accepted: 11/05/2018] [Indexed: 01/29/2023]
Abstract
Discovery, industrial production and clinical applications of penicillin, together with scientific findings on penicillin biosynthesis and its complex regulation, are model milestones of the historical evolution of the most recognized 'magic bullet' against microbial infections available in the worldwide market. Thousands of tons of penicillin produced nowadays are the result of a huge number of technical, industrial and scientific tackled and solved challenges. This combination of, sometimes unsuspected, findings has given Proteomics the chance to support the understanding of the physiology of the high-producing fungal strains and the development of enhanced mutants by means of inverse engineering. Thus, this review, which is part of the special issue entitled "A Tribute to J. Proteomics on its 10th Anniversary", describes how Proteomics has contributed to characterize different aspects related to penicillin production in Penicillium chrosogenum. It covers from global proteome characterizations (intracellular, extracellular and microbodies) to proteome-wide comparative analyses between different penicillin-producing mutant strains and conditions, paying special attention to the methodologies used, as well as to the most important outcomes. As a result, a guide of Proteomics approaches applied to the characterization of penicillin production by P. chrysogenum is detailed in the birthday of the Fleming's most relevant finding. SIGNIFICANCE: Although the discovery of penicillin is celebrating the 90th birthday and its clinical application is worldwide recognized, in fact, semisynthetic penicillins are still one of the most prescribed antibiotics, only the arrival of the post-genomic era during the first decade of the 21st century, and more precisely the Proteomics approaches, have contributed to unveil the industrial secrets behind penicillin production. This review provides relevant information, based on proteomics studies, about the molecular mechanisms responsible for increased penicillin titres, and therefore, may represent a clear model of inverse engineering in microorganisms.
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Affiliation(s)
- Carlos Barreiro
- INBIOTEC (Instituto de Biotecnología de León), Avda. Real 1 - Parque Científico de León, 24006 León, Spain; Departamento de Biología Molecular, Universidad de León, Campus de Ponferrada, Avda. Astorga s/n, 24401 Ponferrada, Spain.
| | - Carlos García-Estrada
- INBIOTEC (Instituto de Biotecnología de León), Avda. Real 1 - Parque Científico de León, 24006 León, Spain; Departamento de Ciencias Biomédicas, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
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Herron JBT, Alexander Thomas Dunbar J. The British Army's contribution to tropical medicine. Clin Med (Lond) 2018; 18:380-383. [PMID: 30287430 PMCID: PMC6334121 DOI: 10.7861/clinmedicine.18-5-380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Infectious disease has burdened European armies since the Crusades. Beginning in the 18th century, therefore, the British Army has instituted novel methods for the diagnosis, prevention and treatment of tropical diseases. Many of the diseases that are humanity's biggest killers were characterised by medical officers and the acceptance of germ theory heralded a golden era of discovery and development. Luminaries of tropical medicine including Bruce, Wright, Leishman and Ross firmly established the British Army's expertise in this area. These innovations led to the prevention of many deaths of both military personnel and civilians. British Army doctors were instrumental in establishing many of the teaching facilities that we now consider to be global leaders in tropical medicine. The impact of the Army in this field has certainly been significant in the past and its contribution continues to this day.
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35
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Katayama B, Ozawa T, Morimoto K, Awazu K, Ito N, Honda N, Oiso N, Tsuruta D. Enhanced sterilization and healing of cutaneous pseudomonas infection using 5-aminolevulinic acid as a photosensitizer with 410-nm LED light. J Dermatol Sci 2018; 90:323-331. [PMID: 29534858 DOI: 10.1016/j.jdermsci.2018.03.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Revised: 02/14/2018] [Accepted: 03/02/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Pseudomonas aeruginosa (PA) frequently develops antibiotic-resistant characteristics, which is clinically problematic. The main reason behind the rise of antibiotic-resistant PA is the extensive use of antibiotics. Therefore, a novel technique is needed to treat PA infections. Photodynamic therapy (PDT) is thought to have the potential to be a non-antibiotic treatment for infections. 5-Aminolevulinic acid (ALA), which works as a photosensitizer after being metabolized into protoporphyrin IX (PpIX) in the heme synthetic pathway, is used for PDT. Thus far, the in vivo effectiveness of PDT using ALA against PA is unknown. OBJECTIVE In this study, we investigated PDT using ALA both in vitro and in vivo. METHODS AND RESULTS Although PDT with ALA alone did not show a bactericidal effect on PA, PDT with both ALA and EDTA-2Na had a bactericidal effect in vitro. In in vivo experiments, wounds healed faster in PA-infected mice treated with PDT using both EDTA-2Na and ALA compared to non-PDT. CONCLUSION These results suggest that PDT with EDTA-2Na and ALA is a potential novel treatment option for PA-infected wounds.
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Affiliation(s)
- Bunpei Katayama
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Toshiyuki Ozawa
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan; Research Center for Infectious Disease Sciences, Osaka City University Graduate School of Medicine, Osaka, Japan.
| | - Kuniyuki Morimoto
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Kunio Awazu
- Medical Beam Physics Laboratory, Osaka University Graduate School of Engineering, Osaka, Japan
| | - Nobuhisa Ito
- Medical Beam Physics Laboratory, Osaka University Graduate School of Engineering, Osaka, Japan
| | - Norihiro Honda
- Medical Beam Physics Laboratory, Osaka University Graduate School of Engineering, Osaka, Japan; Institute for Academic Initiatives, Osaka University, Osaka, Japan
| | - Naoki Oiso
- Department of Dermatology, Kindai University Faculty of Medicine, Osaka, Japan
| | - Daisuke Tsuruta
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan; Research Center for Infectious Disease Sciences, Osaka City University Graduate School of Medicine, Osaka, Japan
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36
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Abstract
The fungal pathogens Candida albicans, Cryptococcus neoformans, and Aspergillus fumigatus have transitioned from a rare curiosity to a leading cause of human mortality. The management of infections caused by these organisms is intimately dependent on the efficacy of antifungal agents; however, fungi that are resistant to these treatments are regularly isolated in the clinic, impeding our ability to control infections. Given the significant impact fungal pathogens have on human health, it is imperative to understand the molecular mechanisms that govern antifungal drug resistance. This review describes our current knowledge of the mechanisms by which antifungal drug resistance evolves in experimental populations and clinical settings. We explore current antifungal treatment options and discuss promising strategies to impede the evolution of drug resistance. By tackling antifungal drug resistance as an evolutionary problem, there is potential to improve the utility of current treatments and accelerate the development of novel therapeutic strategies.
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Affiliation(s)
- Nicole Robbins
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5G 1M1, Canada; , ,
| | - Tavia Caplan
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5G 1M1, Canada; , ,
| | - Leah E Cowen
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5G 1M1, Canada; , ,
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37
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Jaspers S, Komárek A, Aerts M. Bayesian estimation of multivariate normal mixtures with covariate-dependent mixing weights, with an application in antimicrobial resistance monitoring. Biom J 2018; 60:7-19. [PMID: 28898442 DOI: 10.1002/bimj.201600253] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 07/04/2017] [Accepted: 07/07/2017] [Indexed: 11/05/2022]
Abstract
Bacteria with a reduced susceptibility against antimicrobials pose a major threat to public health. Therefore, large programs have been set up to collect minimum inhibition concentration (MIC) values. These values can be used to monitor the distribution of the nonsusceptible isolates in the general population. Data are collected within several countries and over a number of years. In addition, the sampled bacterial isolates were not tested for susceptibility against one antimicrobial, but rather against an entire range of substances. Interest is therefore in the analysis of the joint distribution of MIC data on two or more antimicrobials, while accounting for a possible effect of covariates. In this regard, we present a Bayesian semiparametric density estimation routine, based on multivariate Gaussian mixtures. The mixing weights are allowed to depend on certain covariates, thereby allowing the user to detect certain changes over, for example, time. The new approach was applied to data collected in Europe in 2010, 2012, and 2013. We investigated the susceptibility of Escherichia coli isolates against ampicillin and trimethoprim, where we found that there seems to be a significant increase in the proportion of nonsusceptible isolates. In addition, a simulation study was carried out, showing the promising behavior of the proposed method in the field of antimicrobial resistance.
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Affiliation(s)
- Stijn Jaspers
- Interuniversity Institute for Biostatistics and Statistical Bioinformatics, Hasselt University, BE3590, Diepenbeek, Belgium
| | - Arnošt Komárek
- Department of Probability and Mathematical Statistics, Faculty of Mathematics and Physics, Charles University, CZ-186, 75 Praha 8-Karln, Czech Republic
| | - Marc Aerts
- Interuniversity Institute for Biostatistics and Statistical Bioinformatics, Hasselt University, BE3590, Diepenbeek, Belgium
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Ser HL, Tan LTH, Law JWF, Chan KG, Duangjai A, Saokaew S, Pusparajah P, Ab Mutalib NS, Khan TM, Goh BH, Lee LH. Focused Review: Cytotoxic and Antioxidant Potentials of Mangrove-Derived Streptomyces. Front Microbiol 2017; 8:2065. [PMID: 29163380 PMCID: PMC5672783 DOI: 10.3389/fmicb.2017.02065] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 10/09/2017] [Indexed: 12/31/2022] Open
Abstract
Human life expectancy is rapidly increasing with an associated increasing burden of chronic diseases, such as neurodegenerative diseases and cancer. However, there is limited progress in finding effective treatment for these conditions. For this reason, members of the genus Streptomyces have been explored extensively over the past decades as these filamentous bacteria are highly efficient in producing bioactive compounds with human health benefits. Being ubiquitous in nature, streptomycetes can be found in both terrestrial and marine environments. Previously, two Streptomyces strains (MUSC 137T and MUM 256) isolated from mangrove sediments in Peninsular Malaysia demonstrated potent antioxidant and cytotoxic activities against several human cancer cell lines on bioactivity screening. These results illustrate the importance of streptomycetes from underexplored regions aside from the terrestrial ecosystem. Here we provide the insights and significance of Streptomyces species in the search of anticancer and/or chemopreventive agents and highlight the impact of next generation sequencing on drug discovery from the Streptomyces arsenal.
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Affiliation(s)
- Hooi-Leng Ser
- Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
- Biomedical Research Laboratory, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Malaysia
- Biofunctional Molecule Exploratory Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Loh Teng-Hern Tan
- Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
- Biofunctional Molecule Exploratory Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Jodi Woan-Fei Law
- Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
- Biofunctional Molecule Exploratory Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Faculty of Science, Institute of Biological Sciences, University of Malaya, Kuala Lumpur, Malaysia
- Vice Chancellor Office, Jiangsu University, Zhenjiang, China
| | - Acharaporn Duangjai
- Division of Physiology, School of Medical Sciences, University of Phayao, Phayao, Thailand
- Center of Health Outcomes Research and Therapeutic Safety, School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
| | - Surasak Saokaew
- Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
- Biofunctional Molecule Exploratory Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
- Center of Health Outcomes Research and Therapeutic Safety, School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
- Pharmaceutical Outcomes Research Center, Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok, Thailand
| | - Priyia Pusparajah
- Biomedical Research Laboratory, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Nurul-Syakima Ab Mutalib
- UKM Medical Molecular Biology Institute, UKM Medical Centre, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Tahir Mehmood Khan
- Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
- Biofunctional Molecule Exploratory Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
- Department of Pharmacy, Absyn University Peshawar, Peshawar, Pakistan
- Asian Centre for Evidence Synthesis in Population, Implementation and Clinical Outcomes, Health and Well-Being Cluster, Global Asia in the 21st Century Platform, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Bey-Hing Goh
- Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
- Biofunctional Molecule Exploratory Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
- Center of Health Outcomes Research and Therapeutic Safety, School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
- Asian Centre for Evidence Synthesis in Population, Implementation and Clinical Outcomes, Health and Well-Being Cluster, Global Asia in the 21st Century Platform, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Learn-Han Lee
- Novel Bacteria and Drug Discovery Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
- Biofunctional Molecule Exploratory Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
- Center of Health Outcomes Research and Therapeutic Safety, School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
- Asian Centre for Evidence Synthesis in Population, Implementation and Clinical Outcomes, Health and Well-Being Cluster, Global Asia in the 21st Century Platform, Monash University Malaysia, Bandar Sunway, Malaysia
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Yu TT, Nizalapur S, Ho KKK, Yee E, Berry T, Cranfield CG, Willcox M, Black DS, Kumar N. Design, Synthesis and Biological Evaluation of N-Sulfonylphenyl glyoxamide-Based Antimicrobial Peptide Mimics as Novel Antimicrobial Agents. ChemistrySelect 2017. [DOI: 10.1002/slct.201700336] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tsz Tin Yu
- School of Chemistry; University of New South Wales; Sydney, NSW 2052 Australia
| | | | - Kitty K. K. Ho
- School of Chemistry; University of New South Wales; Sydney, NSW 2052 Australia
| | - Eugene Yee
- School of Chemistry; University of New South Wales; Sydney, NSW 2052 Australia
- Children's Cancer Institute Australia; Lowy Cancer Research Centre, University of New South Wales; Sydney, NSW 2052 Australia
| | - Thomas Berry
- Molecular Biosciences Team; School of Life Sciences, University of Technology Sydney; Sydney Australia
| | - Charles G. Cranfield
- Molecular Biosciences Team; School of Life Sciences, University of Technology Sydney; Sydney Australia
| | - Mark Willcox
- School of Optometry and Vision Science; University of New South Wales; Sydney, NSW 2052 Australia
| | - David StC Black
- School of Chemistry; University of New South Wales; Sydney, NSW 2052 Australia
| | - Naresh Kumar
- School of Chemistry; University of New South Wales; Sydney, NSW 2052 Australia
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40
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Citation classics published in knowledge management journals. Part III: author survey. JOURNAL OF KNOWLEDGE MANAGEMENT 2017. [DOI: 10.1108/jkm-07-2016-0300] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Purpose
This paper is the third part of a series of works investigating the top 100 knowledge management (KM) citation classic articles. The purpose of this paper is to understand why KM citation classics are well-cited.
Design/methodology/approach
The results of a survey of 58 KM citation classic authors were reported as descriptive statistics and subjected to content analysis.
Findings
An archetype of a KM citation classic author was constructed including demographics, personal characteristics, motivation and work preferences. There is a need for developing novel ideas in KM research. Timeliness of a publication is directly linked to its future impact. Editors should involve citation classics authors as reviewers, and KM researchers should improve their citation practices. Serendipity played a very important role in early KM research, especially from the perspective of discovering new and interesting phenomena.
Research limitations/implications
Whereas the importance of serendipity is not questioned, future KM researchers should rely more on a formal, meticulous and well-planned research approach rather than on the hope of making a discovery by accident or luck. KM citation classics authors relied on serendipity to form the foundation of the discipline, but extending their work requires formal and structured inquiries.
Practical implications
Many authors conducted research to solve a problem to serve the needs of both practice and academia, rather than being overly theoretical.
Originality/value
Because KM researchers can no longer rely on past bibliometric theories, this paper helps understand why specific articles are highly cited and recommends how to conduct and develop future KM research that has impact.
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Malinin LH. Creative Practices Embodied, Embedded, and Enacted in Architectural Settings: Toward an Ecological Model of Creativity. Front Psychol 2016; 6:1978. [PMID: 26779087 PMCID: PMC4701984 DOI: 10.3389/fpsyg.2015.01978] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 12/10/2015] [Indexed: 11/13/2022] Open
Abstract
Memoires by eminently creative people often describe architectural spaces and qualities they believe instrumental for their creativity. However, places designed to encourage creativity have had mixed results, with some found to decrease creative productivity for users. This may be due, in part, to lack of suitable empirical theory or model to guide design strategies. Relationships between creative cognition and features of the physical environment remain largely uninvestigated in the scientific literature, despite general agreement among researchers that human cognition is physically and socially situated. This paper investigates what role architectural settings may play in creative processes by examining documented first person and biographical accounts of creativity with respect to three central theories of situated cognition. First, the embodied thesis argues that cognition encompasses both the mind and the body. Second, the embedded thesis maintains that people exploit features of the physical and social environment to increase their cognitive capabilities. Third, the enaction thesis describes cognition as dependent upon a person's interactions with the world. Common themes inform three propositions, illustrated in a new theoretical framework describing relationships between people and their architectural settings with respect to different cognitive processes of creativity. The framework is intended as a starting point toward an ecological model of creativity, which may be used to guide future creative process research and architectural design strategies to support user creative productivity.
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Affiliation(s)
- Laura H Malinin
- Department of Design and Merchandising, College of Health and Human Sciences, Colorado State University, Fort Collins CO, USA
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42
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Microwave-assisted synthesis of chromenes: biological and chemical importance. Future Med Chem 2015; 7:893-909. [DOI: 10.4155/fmc.15.38] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Chromenes constitute chemically important class of heterocyclic compounds having diverse biological and chemical importance. Development of environmentally benign, efficient and economical methods for the synthesis of chromenes remains a significant challenge in synthetic chemistry. The synthesis of chromenes, therefore, has attracted enormous attention from medicinal and organic chemists. Researchers have embraced the concepts of microwave (high speed) synthesis to produce biologically and chemically important chromenes in a time sensitive manner. This review will summarize the recent biological applications such as anticancer, antimicrobial, neurodegenerative and insecticidal activity of new chromenes prepared via microwave irradiation. The development of new methodologies for the synthesis of chromenes including green chemistry processes has also been discussed.
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43
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Saxena S. Microbes in Production of Fine Chemicals (Antibiotics, Drugs, Vitamins, and Amino Acids). Appl Microbiol 2015. [DOI: 10.1007/978-81-322-2259-0_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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44
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Baskaran R, Mohan P, Ganesamoorthy S, Nadda A. Screening of microbial metabolites and bioactive components. Microb Biotechnol 2014. [DOI: 10.1201/b17587-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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45
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Stawicki SP, Swaroop M, Galwankar SC, Papadimos TJ. What's new in critical illness and injury science? State of the art in management of ARDS. Int J Crit Illn Inj Sci 2014; 4:95-7. [PMID: 25024935 PMCID: PMC4093974 DOI: 10.4103/2229-5151.134140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Stanislaw P Stawicki
- Department of Research and Innovation, St. Luke's University Health Network, Bethlehem, Philadelphia, USA
| | - Mamta Swaroop
- Department of Surgery, Northwestern University School of Medicine, Chicago, Illinois, USA
| | - Sagar C Galwankar
- Department of Emergency Medicine, Winter Haven Hospital, University of Florida, Florida, USA
| | - Thomas J Papadimos
- Department of Anesthesiology, The Ohio State University College of Medicine, Columbus, Ohio, USA
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46
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Nigam A, Gupta D, Sharma A. Treatment of infectious disease: beyond antibiotics. Microbiol Res 2014; 169:643-51. [PMID: 24661689 DOI: 10.1016/j.micres.2014.02.009] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 12/09/2013] [Accepted: 02/23/2014] [Indexed: 11/29/2022]
Abstract
Several antibiotics have been discovered following the discovery of penicillin. These antibiotics had been helpful in treatment of infectious diseases considered dread for centuries. The advent of multiple drug resistance in microbes has posed new challenge to researchers. The scientists are now evaluating alternatives for combating infectious diseases. This review focuses on major alternatives to antibiotics on which preliminary work had been carried out. These promising anti-microbial include: phages, bacteriocins, killing factors, antibacterial activities of non-antibiotic drugs and quorum quenching.
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Affiliation(s)
- Anshul Nigam
- IPLS Building, School of Life Science, Pondicherry University, Puducherry 605014, India.
| | - Divya Gupta
- Department of Biotechnology, Mangalayatan University, Beswan, Aligarh, Uttar Pradesh 202145, India
| | - Ashwani Sharma
- Computer-Chemie-Centrum, Universität Erlangen-Nürnberg, Nägelsbachstr. 25, 91052 Erlangen, Germany
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47
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What if Fleming had not discovered penicillin? Saudi J Biol Sci 2014; 21:289-93. [PMID: 25183937 DOI: 10.1016/j.sjbs.2013.12.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Revised: 12/22/2013] [Accepted: 12/24/2013] [Indexed: 11/20/2022] Open
Abstract
What would have happened had Alexander Fleming not discovered penicillin in 1928? Perhaps the obvious answer is that, someone else would have discovered penicillin during 1930s and the Oxford group, would still have purified it sometime in the early 1940s. Here, however, in this counterfactual account of the penicillin story, it is argued that without Fleming, penicillin might still be undiscovered and the antibiotic age would never have dawned. As a result, many of the recent developments in medicine, such as organ transplantation, might have been delayed or, at best, made more hazardous. Penicillin might have come onto the scene a few years later but, had Fleming overlooked the discovery, it seems certain that penicillin would not have saved countless Allied lives, during and after D-Day. Instead of having enjoyed fifty and more years of the antibiotic age, it is argued here, that we would have had to rely upon highly developed sulphonamides, so-called "supasulfas", and other chemically-derived antibacterial drugs. Indeed, it might be the case that, even well into this new millennium, the antibiotic age has yet to dawn, and medicine is still waiting for someone to chance upon penicillin. Here we discuss what might have happened had Fleming not discovered penicillin and come to the conclusion that the medical armoury available today would have been far different and might have relied solely upon highly developed varieties of sulphonamides or similar, synthetic, non-antibiotic antibacterial agents.
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Karaküçük-İyidoğan A, Mercan Z, Oruç-Emre EE, Taşdemir D, İşler D, Kılıç İH, Özaslan M. Synthesis, Characterization, and Biological Evaluation of Some Novel Thiosemicarbazones as Possible Antibacterial and Antioxidant Agents. PHOSPHORUS SULFUR 2013. [DOI: 10.1080/10426507.2013.844139] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Ayşegül Karaküçük-İyidoğan
- Department of Chemistry, Faculty of Arts and Sciences, Gaziantep University, Universite Bulvari, 27310 Gaziantep, Turkey
| | - Zeliha Mercan
- Department of Chemistry, Faculty of Arts and Sciences, Gaziantep University, Universite Bulvari, 27310 Gaziantep, Turkey
| | - Emine Elçin Oruç-Emre
- Department of Chemistry, Faculty of Arts and Sciences, Gaziantep University, Universite Bulvari, 27310 Gaziantep, Turkey
| | - Demet Taşdemir
- Department of Chemistry, Faculty of Arts and Sciences, Gaziantep University, Universite Bulvari, 27310 Gaziantep, Turkey
| | - Derya İşler
- Department of Biology, Faculty of Arts and Sciences, Gaziantep University, Universite Bulvari, 27310 Gaziantep, Turkey
| | - İbrahim Halil Kılıç
- Department of Biology, Faculty of Arts and Sciences, Gaziantep University, Universite Bulvari, 27310 Gaziantep, Turkey
| | - Mehmet Özaslan
- Department of Biology, Faculty of Arts and Sciences, Gaziantep University, Universite Bulvari, 27310 Gaziantep, Turkey
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Singh-Babak SD, Shekhar T, Smith AM, Giaever G, Nislow C, Cowen LE. A novel calcineurin-independent activity of cyclosporin A in Saccharomyces cerevisiae. MOLECULAR BIOSYSTEMS 2013; 8:2575-84. [PMID: 22751784 DOI: 10.1039/c2mb25107h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Fungi rely on regulatory networks to coordinate sensing of environmental stress with initiation of responses crucial for survival. Antifungal drugs are a specific type of environmental stress with broad clinical relevance. Small molecules with antifungal activity are ubiquitous in the environment, and are produced by a myriad of microbes in competitive natural communities. The echinocandins are fungal fermentation products and the most recently developed class of antifungals, with those in clinical use being semisynthetic derivatives that target the fungal cell wall by inhibiting 1,3-β-D-glucan synthase. Recent studies implicate the protein phosphatase calcineurin as a key regulator of cellular stress responses required for fungal survival of echinocandin-induced cell wall stress. Pharmacological inhibition of calcineurin can be achieved using the natural product and immunosuppressive drug cyclosporin A, which inhibits calcineurin by binding to the immunophilin Cpr1. This drug-protein complex inhibits the interaction between the regulatory and catalytic subunits of calcineurin, an interaction necessary for calcineurin function. Here, we report on potent activity of cyclosporin A when combined with the echinocandin micafungin against the model yeast Saccharomyces cerevisiae that is independent of its known mechanism of action of calcineurin inhibition. This calcineurin-independent synergy does not involve any of the 12 immunophilins known in yeast, individually or in combination, and is not mediated by any of the multidrug transporters encoded or controlled by YOR1, SNQ2, PDR5, PDR10, PDR11, YCF1, PDR15, ADP1, VMR1, NFT1, BPT1, YBT1, YNR070w, YOL075c, AUS1, PDR12, PDR1 and/or PDR3. Genome-wide haploinsufficiency profiling (HIP) and homozygous deletion profiling (HOP) strongly implicate the cell wall biosynthesis and integrity pathways as being central to the calcineurin-independent activity of cyclosporin A. Thus, systems level chemical genomic approaches implicate key cellular pathways in a novel mechanism of antifungal drug synergy.
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Affiliation(s)
- Sheena D Singh-Babak
- Department of Molecular Genetics, University of Toronto, 1 King's College Circle, Medical Sciences Building, Room 4368, Toronto, Ontario M5S 1A8, Canada
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50
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Sakurai H, Katoh A, Kiss T, Jakusch T, Hattori M. Metallo-allixinate complexes with anti-diabetic and anti-metabolic syndrome activities. Metallomics 2010; 2:670-82. [PMID: 21072358 DOI: 10.1039/c0mt00025f] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Metabolic syndrome and the accompanied diabetes mellitus are both important diseases worldwide due to changes of lifestyle and eating habits. The number of patients with diabetes worldwide is estimated to increase to 300 million by 2025 from 150-220 million in 2010. There are two main types of diabetes. In type 1 diabetes, caused by destruction of pancreatic β-cells resulting in absolute deficiency of intrinsic insulin secretion, the patients require exogenous insulin injections several times a day. In type 2 diabetes, characterized by insulin resistance and abnormal insulin secretion, the patients need exercise, diet control and/or several types of hypoglycemics. The idea of using metal ions for the treatment of diabetes originates from the report in 1899. The research on the role of metal ions that may contribute to the improvement of diabetes began. The orally active metal complexes containing vanadyl (oxidovanadium(iv)) ion and cysteine or other ligands were first proposed in 1990, and a wide class of vanadium, copper and zinc complexes was found to be effective for treating diabetes in experimental animals. We noticed a characteristic compound, allixin, which is a non-sulfur component in dry garlic. Its vanadyl and zinc complexes improved both types of diabetes following oral administration in diabetic animals. We then developed a new zinc complex with thioxoallixin-N-methyl (tanm), which is both a sulfur and N-methyl derivative of allixin, and found that this complex improves not only diabetes but also metabolic syndrome. Furthermore, new zinc complexes inspired from the zinc-tanm were prepared; one of them exceeded the activity of zinc-tanm. The mechanism of such complexes was studied in adipocytes. We describe here the usefulness of the development of metal-based complexes in the context of potential therapeutic application for diabetes and metabolic syndrome.
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Affiliation(s)
- Hiromu Sakurai
- Department of Pharmaco-analytical and Biocoordination Chemistry, Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, 3500-3 Minami-Tamagaki-cho, Suzuka, Mie, Japan.
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