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Liang H, Wang Y, Liu F, Duan G, Long J, Jin Y, Chen S, Yang H. The Application of Rat Models in Staphylococcus aureus Infections. Pathogens 2024; 13:434. [PMID: 38921732 PMCID: PMC11206676 DOI: 10.3390/pathogens13060434] [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: 04/12/2024] [Revised: 05/10/2024] [Accepted: 05/20/2024] [Indexed: 06/27/2024] Open
Abstract
Staphylococcus aureus (S. aureus) is a major human pathogen and can cause a wide range of diseases, including pneumonia, osteomyelitis, skin and soft tissue infections (SSTIs), endocarditis, mastitis, bacteremia, and so forth. Rats have been widely used in the field of infectious diseases due to their unique advantages, and the models of S. aureus infections have played a pivotal role in elucidating their pathogenic mechanisms and the effectiveness of therapeutic agents. This review outlined the current application of rat models in S. aureus infections and future prospects for rat models in infectious diseases caused by S. aureus.
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Affiliation(s)
- Hongyue Liang
- Department of Epidemiology, School of Public Health, Zhengzhou University, Zhengzhou 450001, China; (H.L.); (F.L.); (G.D.); (J.L.); (Y.J.); (S.C.)
| | - Yadong Wang
- Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou 450016, China;
| | - Fang Liu
- Department of Epidemiology, School of Public Health, Zhengzhou University, Zhengzhou 450001, China; (H.L.); (F.L.); (G.D.); (J.L.); (Y.J.); (S.C.)
| | - Guangcai Duan
- Department of Epidemiology, School of Public Health, Zhengzhou University, Zhengzhou 450001, China; (H.L.); (F.L.); (G.D.); (J.L.); (Y.J.); (S.C.)
| | - Jinzhao Long
- Department of Epidemiology, School of Public Health, Zhengzhou University, Zhengzhou 450001, China; (H.L.); (F.L.); (G.D.); (J.L.); (Y.J.); (S.C.)
| | - Yuefei Jin
- Department of Epidemiology, School of Public Health, Zhengzhou University, Zhengzhou 450001, China; (H.L.); (F.L.); (G.D.); (J.L.); (Y.J.); (S.C.)
| | - Shuaiyin Chen
- Department of Epidemiology, School of Public Health, Zhengzhou University, Zhengzhou 450001, China; (H.L.); (F.L.); (G.D.); (J.L.); (Y.J.); (S.C.)
| | - Haiyan Yang
- Department of Epidemiology, School of Public Health, Zhengzhou University, Zhengzhou 450001, China; (H.L.); (F.L.); (G.D.); (J.L.); (Y.J.); (S.C.)
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Niu H, Yang T, Wang J, Wang R, Cai Y. Immunomodulatory Effect of Colistin and its Protective Role in Rats with Methicillin-Resistant Staphylococcus aureus-induced Pneumonia. Front Pharmacol 2021; 11:602054. [PMID: 33551807 PMCID: PMC7854386 DOI: 10.3389/fphar.2020.602054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 12/10/2020] [Indexed: 11/13/2022] Open
Abstract
Objectives: Colistin is the last resort of antimicrobials against multi-drug resistant Gram-negative pathogens. Previous studies in Caenorhabditis elegans and macrophages of rats have suggested that colistin possesses the immunomodulatory properties by acting p38/MAPK pathway. Here, we aimed to confirm the immunomodulatory role of colistin in animal models. Methods: Rat model of Methicillin-resistant Staphylococcus aureus (MRSA)-induced pneumonia was established. Plasma concentrations of proinflammatory cytokines, quantitative bacteriology, histology and immunohistochemistry of lungs were assessed to compare the immunomodulatory properties of colistin pre-administration. Results: The numbers of white blood cells and granulocytes were significantly increased in the 9 mg/kg colistin pre-administration group at 72 h after infection. Levels of TNF-α, IL-6 and IL-1β in plasma after colistin pre-administration were lower compared with the infected group without treatment. Colistin pre-treatment resulted in lower bacterial counts, a dramatic decrease of cytokines and improved histopathological injury in infected lung tissues compared with the untreated animals. However, p38/MAPK inhibitor SB203580 did not fully block the above-mentioned effects caused by colistin. Conclusion: Pre-administration of colistin could attenuate an excessive inflammatory reaction and protect the lungs from MRSA-associated damages. However, these effects could not be reversed by blocking the p38/MAPK pathway alone. Collectively, the mechanism underlying the immunoregulatory effects of colistin in mammals needs to be further explored.
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Affiliation(s)
- Hui Niu
- Department of Pharmacy, Center of Medicine Clinical Research, Medical Supplies Center of PLA General Hospital, Beijing, China
| | - Tianli Yang
- Department of Pharmacy, Center of Medicine Clinical Research, Medical Supplies Center of PLA General Hospital, Beijing, China
| | - Jin Wang
- Department of Pharmacy, Center of Medicine Clinical Research, Medical Supplies Center of PLA General Hospital, Beijing, China
| | - Rui Wang
- Department of Pharmacy, Center of Medicine Clinical Research, Medical Supplies Center of PLA General Hospital, Beijing, China
| | - Yun Cai
- Department of Pharmacy, Center of Medicine Clinical Research, Medical Supplies Center of PLA General Hospital, Beijing, China
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Li H, Ma S, Zhang X, Li C, Dong B, Mujtaba MG, Wei Y, Liang X, Yu X, Wen K, Yu W, Shen J, Wang Z. Generic Hapten Synthesis, Broad-Specificity Monoclonal Antibodies Preparation, and Ultrasensitive ELISA for Five Antibacterial Synergists in Chicken and Milk. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:11170-11179. [PMID: 30251847 DOI: 10.1021/acs.jafc.8b03834] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
An antibody with broad specificity and principally depending on hapten structure and size is a key reagent for developing a class-selective immunoassay. In the present study, three new generic haptens of antibacterial synergists (ASGs) were proposed using trimethoprim as the starting molecule. These haptens contained carboxyl groups on the meta position of trimethoxybenzene for conjugating to protein, while, the common moiety of ASGs, i.e., diaminopyrimidine, was intentionally and maximally exposed to the immune system in animals in order to induce antibodies with broad specificity against ASGs. Five monoclonal antibodies (mAbs) were finally obtained, and 5C4 from the hapten with a short spacer arm, named Hapten A, showed not only uniform broad specificity but also high affinity to all five ASGs. We further determined the possible recognition mechanism of mAbs in terms of conformational and electronic aspects. An indirect competitive ELISA (icELISA)-based 5C4 was established and exhibited IC50 values of 0.067-0.139 μg L-1 with cross-reactivity of 48.2%-418.7% for the five ASGs in buffer under optimal conditions. The calculated limits of detection of the icELISA for chicken and milk were 0.06-0.8 μg kg-1 and 0.05-0.6 μg L-1, respectively. The recoveries in spiked chicken and milk samples were 75.2%-101.4% with a coefficient of variation less than 14.3%. In summary, we have developed, for the first time, a rapid and reliable icELISA for ASGs with significantly improved sensitivity and class selectivity.
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Affiliation(s)
- Hongfang Li
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine , China Agricultural University , 100193 Beijing , People's Republic of China
| | - Shaoqin Ma
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine , China Agricultural University , 100193 Beijing , People's Republic of China
| | - Xiya Zhang
- College of Food Science and Technology , Henan Agricultural University , 450002 Zhengzhou , People's Republic of China
| | - Chenglong Li
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine , China Agricultural University , 100193 Beijing , People's Republic of China
| | - Baolei Dong
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine , China Agricultural University , 100193 Beijing , People's Republic of China
| | - Mari Ghulam Mujtaba
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine , China Agricultural University , 100193 Beijing , People's Republic of China
| | - Yujie Wei
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine , China Agricultural University , 100193 Beijing , People's Republic of China
| | - Xiao Liang
- College of Veterinary Medicine , Qingdao Agricultural University , 266109 Qingdao , People's Republic of China
| | - Xuezhi Yu
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine , China Agricultural University , 100193 Beijing , People's Republic of China
| | - Kai Wen
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine , China Agricultural University , 100193 Beijing , People's Republic of China
| | - Wenbo Yu
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine , China Agricultural University , 100193 Beijing , People's Republic of China
| | - Jianzhong Shen
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine , China Agricultural University , 100193 Beijing , People's Republic of China
| | - Zhanhui Wang
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine , China Agricultural University , 100193 Beijing , People's Republic of China
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Huang DB, Dryden M. Iclaprim, a dihydrofolate reductase inhibitor antibiotic in Phase III of clinical development: a review of its pharmacology, microbiology and clinical efficacy and safety. Future Microbiol 2018; 13:957-969. [PMID: 29742926 DOI: 10.2217/fmb-2018-0061] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Iclaprim is under clinical development for treating acute bacterial skin and skin structure infections (ABSSSI) and nosocomial pneumonia most often due to Gram-positive bacteria, including infections due to drug-resistant bacteria. In two recent Phase III studies of patients with acute bacterial skin and skin structure infections, intravenous iclaprim 80 mg every 12 h was noninferior to dose-adjusted vancomycin. Additional studies are planned for patients with nosocomial pneumonia. Iclaprim represents an alternative for the treatment of severe skin and pulmonary infections due to Gram-positive bacteria.
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Affiliation(s)
- David B Huang
- Motif BioSciences, 5 Independence Way, Suite 300 Princeton, NJ 08540, USA; Rutgers New Jersey Medical School, 5 Independence Way, Suite 300 Princeton, NJ 08540, USA
| | - Matthew Dryden
- Department of Microbiology & Infection, Hampshire Hospitals NHS Foundation Trust, Romsey Road, Winchester, Hampshire, SO22 5DG, UK
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