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Kim HY, Lee HS, Kim IH, Kim Y, Ji M, Oh S, Kim DY, Lee W, Kim SH, Paik MJ. Comprehensive Targeted Metabolomic Study in the Lung, Plasma, and Urine of PPE/LPS-Induced COPD Mice Model. Int J Mol Sci 2022; 23:ijms23052748. [PMID: 35269890 PMCID: PMC8911395 DOI: 10.3390/ijms23052748] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/22/2022] [Accepted: 02/25/2022] [Indexed: 12/10/2022] Open
Abstract
(1) Background: Progression of chronic obstructive pulmonary disease (COPD) leads to irreversible lung damage and inflammatory responses; however, biomarker discovery for monitoring of COPD progression remains challenging. (2) Methods: This study evaluated the metabolic mechanisms and potential biomarkers of COPD through the integrated analysis and receiver operating characteristic (ROC) analysis of metabolic changes in lung, plasma, and urine, and changes in morphological characteristics and pulmonary function in a model of PPE/LPS-induced COPD exacerbation. (3) Results: Metabolic changes in the lungs were evaluated as metabolic reprogramming to counteract the changes caused by the onset of COPD. In plasma, several combinations of phenylalanine, 3-methylhistidine, and polyunsaturated fatty acids have been proposed as potential biomarkers; the α-aminobutyric acid/histidine ratio has also been reported, which is a novel candidate biomarker for COPD. In urine, a combination of succinic acid, isocitric acid, and pyruvic acid has been proposed as a potential biomarker. (4) Conclusions: This study proposed potential biomarkers in plasma and urine that reflect altered lung metabolism in COPD, concurrently with the evaluation of the COPD exacerbation model induced by PPE plus LPS administration. Therefore, understanding these integrative mechanisms provides new insights into the diagnosis, treatment, and severity assessment of COPD.
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Affiliation(s)
- Hyeon-Young Kim
- Jeonbuk Branch Institute, Korea Institute of Toxicology, Jeongeup 56212, Korea; (H.-Y.K.); (I.-H.K.)
- College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Korea
| | - Hyeon-Seong Lee
- College of Pharmacy, Chosun University, Gwangju 61452, Korea; (H.-S.L.); (W.L.)
- Korea Institute of Science and Technology, Gangneung Institute of Natural Products, Gangneung 25451, Korea
| | - In-Hyeon Kim
- Jeonbuk Branch Institute, Korea Institute of Toxicology, Jeongeup 56212, Korea; (H.-Y.K.); (I.-H.K.)
- College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Korea
| | - Youngbae Kim
- College of Pharmacy, Sunchon National University, Suncheon 57922, Korea; (Y.K.); (M.J.); (S.O.); (D.-Y.K.)
| | - Moongi Ji
- College of Pharmacy, Sunchon National University, Suncheon 57922, Korea; (Y.K.); (M.J.); (S.O.); (D.-Y.K.)
| | - Songjin Oh
- College of Pharmacy, Sunchon National University, Suncheon 57922, Korea; (Y.K.); (M.J.); (S.O.); (D.-Y.K.)
| | - Doo-Young Kim
- College of Pharmacy, Sunchon National University, Suncheon 57922, Korea; (Y.K.); (M.J.); (S.O.); (D.-Y.K.)
- Hyundai Pharm, New Drug Discovery Lab, Yongin 17089, Korea
| | - Wonjae Lee
- College of Pharmacy, Chosun University, Gwangju 61452, Korea; (H.-S.L.); (W.L.)
| | - Sung-Hwan Kim
- Jeonbuk Branch Institute, Korea Institute of Toxicology, Jeongeup 56212, Korea; (H.-Y.K.); (I.-H.K.)
- Correspondence: (S.-H.K.); (M.-J.P.); Tel.: +82-63-570-8757 (S.-H.K.); +82-61-750-3762 (M.-J.P.)
| | - Man-Jeong Paik
- College of Pharmacy, Sunchon National University, Suncheon 57922, Korea; (Y.K.); (M.J.); (S.O.); (D.-Y.K.)
- Correspondence: (S.-H.K.); (M.-J.P.); Tel.: +82-63-570-8757 (S.-H.K.); +82-61-750-3762 (M.-J.P.)
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de Oliveira MV, Rocha NDN, Santos RS, Rocco MRM, de Magalhães RF, Silva JD, Souza SAL, Capelozzi VL, Pelosi P, Silva PL, Rocco PRM. Endotoxin-Induced Emphysema Exacerbation: A Novel Model of Chronic Obstructive Pulmonary Disease Exacerbations Causing Cardiopulmonary Impairment and Diaphragm Dysfunction. Front Physiol 2019; 10:664. [PMID: 31191356 PMCID: PMC6546905 DOI: 10.3389/fphys.2019.00664] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 05/09/2019] [Indexed: 12/26/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a progressive disorder of the lung parenchyma which also involves extrapulmonary manifestations, such as cardiovascular impairment, diaphragm dysfunction, and frequent exacerbations. The development of animal models is important to elucidate the pathophysiology of COPD exacerbations and enable analysis of possible therapeutic approaches. We aimed to characterize a model of acute emphysema exacerbation and evaluate its consequences on the lung, heart, and diaphragm. Twenty-four Wistar rats were randomly assigned into one of two groups: control (C) or emphysema (ELA). In ELA group, animals received four intratracheal instillations of pancreatic porcine elastase (PPE) at 1-week intervals. The C group received saline under the same protocol. Five weeks after the last instillation, C and ELA animals received saline (SAL) or E. coli lipopolysaccharide (LPS) (200 μg in 200 μl) intratracheally. Twenty-four hours after saline or endotoxin administration, arterial blood gases, lung inflammation and morphometry, collagen fiber content, and lung mechanics were analyzed. Echocardiography, diaphragm ultrasonography (US), and computed tomography (CT) of the chest were done. ELA-LPS animals, compared to ELA-SAL, exhibited decreased arterial oxygenation; increases in alveolar collapse (p < 0.0001), relative neutrophil counts (p = 0.007), levels of cytokine-induced neutrophil chemoattractant-1, interleukin (IL)-1β, tumor necrosis factor-α, IL-6, and vascular endothelial growth factor in lung tissue, collagen fiber deposition in alveolar septa, airways, and pulmonary vessel walls, and dynamic lung elastance (p < 0.0001); reduced pulmonary acceleration time/ejection time ratio, (an indirect index of pulmonary arterial hypertension); decreased diaphragm thickening fraction and excursion; and areas of emphysema associated with heterogeneous alveolar opacities on chest CT. In conclusion, we developed a model of endotoxin-induced emphysema exacerbation that affected not only the lungs but also the heart and diaphragm, thus resembling several features of human disease. This model of emphysema should allow preclinical testing of novel therapies with potential for translation into clinical practice.
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Affiliation(s)
- Milena Vasconcellos de Oliveira
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Nazareth de Novaes Rocha
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.,Department of Physiology and Pharmacology, Biomedical Institute, Fluminense Federal University, Niterói, Brazil
| | - Raquel Souza Santos
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcella Rieken Macedo Rocco
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Raquel Ferreira de Magalhães
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Johnatas Dutra Silva
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Sergio Augusto Lopes Souza
- Department of Radiology, Faculty of Medicine, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Vera Luiza Capelozzi
- Department of Pathology, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Paolo Pelosi
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Genoa, Italy.,San Martino Policlinico Hospital, IRCCS for Oncology and Neurosciences, Genoa, Italy
| | - Pedro Leme Silva
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Patricia Rieken Macedo Rocco
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Acute lower respiratory infections on lung sequelae in Cambodia, a neglected disease in highly tuberculosis-endemic country. Respir Med 2013; 107:1625-32. [PMID: 23937802 PMCID: PMC7125659 DOI: 10.1016/j.rmed.2013.07.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2013] [Revised: 07/08/2013] [Accepted: 07/23/2013] [Indexed: 11/22/2022]
Abstract
Background Little is known about post-infectious pulmonary sequelae in countries like Cambodia where tuberculosis is hyper-endemic and childhood pulmonary infections are highly frequent. We describe the characteristics of hospitalized Cambodian patients presenting with community-acquired acute lower respiratory infections (ALRI) on post-infectious pulmonary sequelae (ALRIPS). Methods Between 2007 and 2010, inpatients ≥15 years with ALRI were prospectively recruited. Clinical, biological, radiological and microbiological data were collected. Chest radiographs were re-interpreted by experts to compare patients with ALRIPS, on previously healthy lungs (ALRIHL) and active pulmonary tuberculosis (TB). Patients without chest radiograph abnormality or with abnormality suggestive as other chronic respiratory diseases were excluded from this analysis. Results Among the 2351 inpatients with community-acquired ALRI, 1800 were eligible: 426 (18%) ALRIPS, 878 (37%) ALRIHL and 496 (21%) TB. ALRIPS patients had less frequent fever than other ALRI (p < 0.001) and more productive cough than ALRIHL (p < 0.001). Streptococcus pneumoniae, Haemophilus influenzae, and Pseudomonas aeruginosa accounted for 83% of ALRIPS group positive cultures. H. influenzae and P. aeruginosa were significantly associated with ALRIPS compared with ALRIHL. Treatment was appropriate in 58% of ALRIPS patients. Finally, 79% of ALRIPS were not recognized by local clinicians. In-hospital mortality was low (1%) but probably underestimated in the ALRIPS group. Conclusion ALRIPS remains often misdiagnosed as TB with inappropriate treatment in low-income countries. Better-targeted training programs would help reduce the morbidity burden and financial costs.
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Antoniou T, Gomes T, Mamdani MM, Juurlink DN. Ciprofloxacin-induced theophylline toxicity: a population-based study. Eur J Clin Pharmacol 2011; 67:521-6. [PMID: 21234553 DOI: 10.1007/s00228-010-0985-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2010] [Accepted: 12/22/2010] [Indexed: 10/18/2022]
Abstract
PURPOSE Ciprofloxacin can inhibit the cytochrome P450-mediated metabolism of theophylline, but the clinical relevance of this drug interaction is uncertain. We studied the risk of theophylline toxicity associated with the co-prescription of ciprofloxacin and theophylline. METHODS This was a population-based, nested case-control study of a cohort of Ontario residents aged 66 years of age or older treated with theophylline between April 1, 1992 and March 31, 2009. Within this group, case patients were those hospitalized with theophylline toxicity. For each case, 50 age- and sex-matched control patients were identified from the same cohort. The odds ratio (OR) for the association between hospitalization for theophylline toxicity and receipt of ciprofloxacin in the 14 days preceding hospitalization was determined. RESULTS Among the 77,251 elderly patients receiving therapy with theophylline, 180 eligible case patients hospitalized for theophylline toxicity and 9000 matched controls were identified. Following multivariable adjustment, a nearly twofold increase in the risk of theophylline toxicity following the receipt of ciprofloxacin was observed [adjusted OR 1.86, 95% confidence interval (CI) 1.18-2.93]. In contrast, there was no increased risk of theophylline toxicity within a group of patients receiving neutral comparator antibiotics (levofloxacin, trimethoprim-sulfamethoxazole or cefuroxime) (adjusted OR 0.78; 95% CI 0.38-1.62). CONCLUSION Treatment with ciprofloxacin is associated with a significant increase in the risk of theophylline toxicity. When clinically appropriate, alternate antibiotics should be considered for elderly patients receiving theophylline.
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