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Wang Y, Ye Q, Xu X, Dhmees AS, Cui X. Effect of Yttrium on Ce/Ni-Metakaolin Catalysts for CO 2 Methanation. Molecules 2023; 28:7079. [PMID: 37894558 PMCID: PMC10609044 DOI: 10.3390/molecules28207079] [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: 09/17/2023] [Revised: 10/08/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
In recent years, major economies have implemented carbon reduction and carbon neutrality policies. Furthermore, with advancements in science and technology, carbon dioxide (CO2) is now considered a valuable raw material for producing carbon-based fuels through hydrogenation. Various concentrations of yttrium (referred to as Y hereafter) were introduced to assess their influence on the catalytic performance of CO2 methanation. At a temperature of 300 °C, the catalyst exhibited an impressive CO2 conversion rate of 78.4% and maintained remarkable stability throughout a rigorous 100 h stability assessment. The findings suggest that the inclusion of yttrium (Y) promotes the formation of oxygen vacancies and alkaline sites on the catalyst. This, in turn, enhances the reducibility of nickel species, improves the dispersion of nickel particles, and plays a pivotal role in enhancing thermal stability. Furthermore, it offers an innovative design approach for creating highly efficient composite CO2 methanation catalysts by controlling particle size and harnessing synergistic catalytic effects at the metal/support interface.
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Affiliation(s)
- Yuyi Wang
- Guangxi Key Lab of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; (Y.W.); (Q.Y.); (X.X.)
| | - Quan Ye
- Guangxi Key Lab of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; (Y.W.); (Q.Y.); (X.X.)
| | - Xinyu Xu
- Guangxi Key Lab of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; (Y.W.); (Q.Y.); (X.X.)
| | - Abdelghaffar S. Dhmees
- Egyptian Petroleum Research Institute, Ahmed El-Zomor St., Nasr City, Cairo 11727, Egypt;
| | - Xuemin Cui
- Guangxi Key Lab of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; (Y.W.); (Q.Y.); (X.X.)
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2
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Gingival Crevicular Fluid Peptidome Profiling in Healthy and in Periodontal Diseases. Int J Mol Sci 2020; 21:ijms21155270. [PMID: 32722327 PMCID: PMC7432128 DOI: 10.3390/ijms21155270] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/09/2020] [Accepted: 07/22/2020] [Indexed: 02/07/2023] Open
Abstract
Given its intrinsic nature, gingival crevicular fluid (GCF) is an attractive source for the discovery of novel biomarkers of periodontal diseases. GCF contains antimicrobial peptides and small proteins which could play a role in specific immune-inflammatory responses to guarantee healthy gingival status and to prevent periodontal diseases. Presently, several proteomics studies have been performed leading to increased coverage of the GCF proteome, however fewer efforts have been done to explore its natural peptides. To fill such gap, this review provides an overview of the mass spectrometric platforms and experimental designs aimed at GCF peptidome profiling, including our own data and experiences gathered from over several years of matrix-assisted laser desorption ionization/time of flight mass spectrometry (MALDI-TOF MS) based approach in this field. These tools might be useful for capturing snapshots containing diagnostic clinical information on an individual and population scale, which may be used as a specific code not only for the diagnosis of the nature or the stage of the inflammatory process in periodontal disease, but more importantly, for its prognosis, which is still an unmet medical need. As a matter of fact, current peptidomics investigations suffer from a lack of standardized procedures, posing a serious problem for data interpretation. Descriptions of the efforts to address such concerns will be highlighted.
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3
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Terracciano R, Preianò M, Maggisano G, Pelaia C, Savino R. Hexagonal Mesoporous Silica as a Rapid, Efficient and Versatile Tool for MALDI-TOF MS Sample Preparation in Clinical Peptidomics Analysis: A Pilot Study. Molecules 2019; 24:molecules24122311. [PMID: 31234484 PMCID: PMC6631377 DOI: 10.3390/molecules24122311] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 06/11/2019] [Accepted: 06/20/2019] [Indexed: 11/25/2022] Open
Abstract
Improvement in high-throughput MALDI-TOF MS analysis requires practical and efficient sample preparation protocols for high acquisition rates. The use of hexagonal mesoporous silica (HMS) sorbents in combination with MALDI-TOF MS was explored as a versatile tool for peptidomic profiling of clinical specimens difficult to process, but considered important sources of disease biomarkers: synovial fluid and sputum. A rapid and efficient procedure, based on dispersive solid-phase extraction of peptides using commercially available wormhole mesostructured HMS, was tested for: a) pre-concentration of standard peptides in serially diluted solution up to the sub-nanomolar range; b) peptidome profiling of sputum and synovial fluid. The use of HMS, as dispersed sponges, significantly amplified the peptidic repertoire of sputum and synovial fluid by excluding from the adsorptive process large size proteins, which mask and/or suppress peptidome signals. The protocol proposed, as dispersive solid phase extraction, ensures good analytical performances. Moreover, it is economical and rapid, as it avoids the use of less reproducible and prolonged sample preparation procedures, such as the use of ultrafiltration filter devices. These findings may contribute to defining a high-throughput screening MS-based platform for monitoring key peptidic features of difficult to analyse bodily fluids in a clinical setting.
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Affiliation(s)
- Rosa Terracciano
- Department of Health Sciences, University "Magna Græcia", 88100 Catanzaro, Italy.
| | | | - Giuseppina Maggisano
- Department of Health Sciences, University "Magna Græcia", 88100 Catanzaro, Italy.
| | - Corrado Pelaia
- Department of Medical and Surgical Sciences, University "Magna Græcia", 88100 Catanzaro, Italy.
| | - Rocco Savino
- Department of Health Sciences, University "Magna Græcia", 88100 Catanzaro, Italy.
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4
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Lombardo N, Preianò M, Maggisano G, Murfuni MS, Messina L, Pelaia G, Savino R, Terracciano R. A rapid differential display analysis of nasal swab fingerprints to distinguish allergic from non-allergic rhinitis subjects by mesoporous silica particles and MALDI-TOF mass spectrometry. Proteomics 2017; 17. [PMID: 28012241 DOI: 10.1002/pmic.201600215] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 09/01/2016] [Accepted: 12/19/2016] [Indexed: 12/13/2022]
Abstract
Discriminating different rhinitis cases can sometimes be difficult as the diagnostic criteria used to identify the various subgroups are not always unambiguous. The nasal fluid (NF) highly reflects the pathophysiology of these inflammatory diseases. However, its collection, as nasal lavage fluid, may cause discomfort. Due to the non-invasiveness and rapidity of collection, nasal swab might represent an alternative to overcome these problems and also an ideal source of biomarkers. In this study, we demonstrate that the combined use of mesoporous silica (MPS) with MALDI-TOF MS allows the rapid detection of differential nasal peptide profiles from nasal swabs of healthy (H), allergic rhinitis (AR) and non-allergic rhinitis (NAR) subjects. NF peptides from nasal swabs were captured by the mean of MPS then profiled by MALDI-TOF MS. As a proof-of-principle, we also explored the ability of our platform to discriminate between nasal swabs of patients with AR and NAR, and between these groups and H controls. Four peaks resulted differentially expressed between NAR and AR, two peaks discriminated AR from H while one peak segregated NAR from H group. Therefore, peptides selected and enriched by our platform could form a part of a diagnostic ''rhinomic'' profile of the allergic and non-allergic patients.
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Affiliation(s)
- Nicola Lombardo
- Department of Medical and Surgical Sciences, University "Magna Graecia", Catanzaro, Italy
| | - Mariaimmacolata Preianò
- Department of Health Sciences, Laboratory of Mass Spectrometry and Proteomics, University "Magna Graecia", Catanzaro, Italy
| | - Giuseppina Maggisano
- Department of Health Sciences, Laboratory of Mass Spectrometry and Proteomics, University "Magna Graecia", Catanzaro, Italy
| | - Maria Stella Murfuni
- Department of Health Sciences, Laboratory of Mass Spectrometry and Proteomics, University "Magna Graecia", Catanzaro, Italy
| | - Luigi Messina
- Department of Medical and Surgical Sciences, University "Magna Graecia", Catanzaro, Italy
| | - Girolamo Pelaia
- Department of Medical and Surgical Sciences, University "Magna Graecia", Catanzaro, Italy
| | - Rocco Savino
- Department of Health Sciences, Laboratory of Mass Spectrometry and Proteomics, University "Magna Graecia", Catanzaro, Italy
| | - Rosa Terracciano
- Department of Health Sciences, Laboratory of Mass Spectrometry and Proteomics, University "Magna Graecia", Catanzaro, Italy
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5
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Gallelli L, Falcone D, Cannataro R, Perri M, Serra R, Pelaia G, Maselli R, Savino R, Spaziano G, D’Agostino B. Theophylline action on primary human bronchial epithelial cells under proinflammatory stimuli and steroidal drugs: a therapeutic rationale approach. Drug Des Devel Ther 2017; 11:265-272. [PMID: 28176948 PMCID: PMC5271379 DOI: 10.2147/dddt.s118485] [Citation(s) in RCA: 14] [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] [Indexed: 02/05/2023] Open
Abstract
Theophylline is a natural compound present in tea. Because of its property to relax smooth muscle it is used in pharmacology for the treatment of airway diseases (ie, chronic obstructive pulmonary disease, asthma). However, this effect on smooth muscle is dose dependent and it is related to the development of side effects. Recently, an increasing body of evidence suggests that theophylline, at low concentrations, also has anti-inflammatory effects related to the activation of histone deacetylases. In this study, we evaluated the effects of theophylline alone and in combination with corticosteroids on human bronchial epithelial cells under inflammatory stimuli. Theophylline administrated alone was not able to reduce growth-stimulating signaling via extracellular signal-regulated kinases activation and matrix metalloproteases release, whereas it strongly counteracts this biochemical behavior when administered in the presence of corticosteroids. These data provide scientific evidence for supporting the rationale for the pharmacological use of theophylline and corticosteroid combined drug.
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Affiliation(s)
- Luca Gallelli
- Department of Health Science, University of Catanzaro, Catanzaro
| | - Daniela Falcone
- Department of Health Science, University of Catanzaro, Catanzaro
| | - Roberto Cannataro
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende
| | - Mariarita Perri
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende
| | - Raffaele Serra
- Department of Medical and Surgical Sciences, University of Catanzaro, Catanzaro
| | - Girolamo Pelaia
- Department of Medical and Surgical Sciences, University of Catanzaro, Catanzaro
| | - Rosario Maselli
- Department of Medical and Surgical Sciences, University of Catanzaro, Catanzaro
| | - Rocco Savino
- Department of Health Science, University of Catanzaro, Catanzaro
| | - Giuseppe Spaziano
- Department of Experimental Medicine, School of Medicine, Section of Pharmacology, Second University of Naples, Naples, Italy
| | - Bruno D’Agostino
- Department of Experimental Medicine, School of Medicine, Section of Pharmacology, Second University of Naples, Naples, Italy
- Correspondence: Bruno D’Agostino, Department of Experimental Medicine, School of Medicine, Section of Pharmacology, Second University of Naples, Via Costantinopoli 115, 80138 Naples, Italy, Tel +39 81 566 5882, Email
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6
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Canela N, Herrero P, Mariné S, Nadal P, Ras MR, Rodríguez MÁ, Arola L. Analytical methods in sphingolipidomics: Quantitative and profiling approaches in food analysis. J Chromatogr A 2015; 1428:16-38. [PMID: 26275862 DOI: 10.1016/j.chroma.2015.07.110] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 07/27/2015] [Accepted: 07/31/2015] [Indexed: 02/07/2023]
Abstract
In recent years, sphingolipidomics has emerged as an interesting omic science that encompasses the study of the full sphingolipidome characterization, content, structure and activity in cells, tissues or organisms. Like other omics, it has the potential to impact biomarker discovery, drug development and systems biology knowledge. Concretely, dietary food sphingolipids have gained considerable importance due to their extensively reported bioactivity. Because of the complexity of this lipid family and their diversity among foods, powerful analytical methodologies are needed for their study. The analytical tools developed in the past have been improved with the enormous advances made in recent years in mass spectrometry (MS) and chromatography, which allow the convenient and sensitive identification and quantitation of sphingolipid classes and form the basis of current sphingolipidomics methodologies. In addition, novel hyphenated nuclear magnetic resonance (NMR) strategies, new ionization strategies, and MS imaging are outlined as promising technologies to shape the future of sphingolipid analyses. This review traces the analytical methods of sphingolipidomics in food analysis concerning sample extraction, chromatographic separation, the identification and quantification of sphingolipids by MS and their structural elucidation by NMR.
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Affiliation(s)
- Núria Canela
- Centre for Omic Sciences, Universitat Rovira i Virgili (COS-URV), Spain
| | - Pol Herrero
- Centre for Omic Sciences, Universitat Rovira i Virgili (COS-URV), Spain
| | - Sílvia Mariné
- Centre for Omic Sciences, Universitat Rovira i Virgili (COS-URV), Spain
| | - Pedro Nadal
- Centre for Omic Sciences, Universitat Rovira i Virgili (COS-URV), Spain
| | - Maria Rosa Ras
- Centre for Omic Sciences, Universitat Rovira i Virgili (COS-URV), Spain
| | | | - Lluís Arola
- Centre for Omic Sciences, Universitat Rovira i Virgili (COS-URV), Spain.
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7
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Sassi M, Arena S, Scaloni A. MALDI-TOF-MS Platform for Integrated Proteomic and Peptidomic Profiling of Milk Samples Allows Rapid Detection of Food Adulterations. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:6157-6171. [PMID: 26098723 DOI: 10.1021/acs.jafc.5b02384] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Adulteration of ovine, caprine, and buffalo milks with more common bovine material occurs for economic reasons and seasonal availability. Frauds are also associated with the use of powdered milk instead of declared, fresh material. In this context, various analytical methods have been adapted to dairy science applications with the aim to evaluate adulteration of milk samples, although time-consuming, suitable only for speciation or thermal treatment analysis, or useful for a specific fraud type. An integrated MALDI-TOF-MS platform for the combined peptidomic and proteomic profiling of milk samples is here presented, which allows rapid detection of illegal adulterations due to the addition of either nondeclared bovine material to water buffalo, goat, and ovine milks or of powdered bovine milk to the fresh counterpart. Peptide and protein markers of each animal milk were identified after direct analysis of a large number of diluted skimmed and/or enriched diluted skimmed filtrate samples. In parallel, markers of thermal treatment were characterized in different types of commercial milks. Principal components scores of ad hoc prepared species- or thermal treatment-associated adulterated milk samples were subjected to partial least-squares regression, permitting a fast accurate estimate of the fraud extents in test samples at either protein and peptide level. With respect to previous reports on MALDI-TOF-MS protein profiling methodologies for milk speciation, this study extends that approach to the analysis of the thermal treatment and introduces an independent, complementary peptide profiling measurement, which integrates protein data with additional information on peptides, validating final results and ultimately broadening the method applicability.
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8
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Xu L, Qi X, Li X, Bai Y, Liu H. Recent advances in applications of nanomaterials for sample preparation. Talanta 2015; 146:714-26. [PMID: 26695321 DOI: 10.1016/j.talanta.2015.06.036] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 06/08/2015] [Accepted: 06/13/2015] [Indexed: 12/30/2022]
Abstract
Sample preparation is a key step for qualitative and quantitative analysis of trace analytes in complicated matrix. Along with the rapid development of nanotechnology in material science, numerous nanomaterials have been developed with particularly useful applications in analytical chemistry. Benefitting from their high specific areas, increased surface activities, and unprecedented physical/chemical properties, the potentials of nanomaterials for rapid and efficient sample preparation have been exploited extensively. In this review, recent progress of novel nanomaterials applied in sample preparation has been summarized and discussed. Both nanoparticles and nanoporous materials are evaluated for their unusual performance in sample preparation. Various compositions and functionalizations extended the applications of nanomaterials in sample preparations, and distinct size and shape selectivity was generated from the diversified pore structures of nanoporous materials. Such great variety make nanomaterials a kind of versatile tools in sample preparation for almost all categories of analytes.
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Affiliation(s)
- Linnan Xu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xiaoyue Qi
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xianjiang Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yu Bai
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
| | - Huwei Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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9
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On plate graphite supported sample processing for simultaneous lipid and protein identification by matrix assisted laser desorption ionization mass spectrometry. Talanta 2015; 137:161-6. [DOI: 10.1016/j.talanta.2015.01.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 01/19/2015] [Accepted: 01/23/2015] [Indexed: 01/27/2023]
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10
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Terracciano R, Pelaia G, Preianò M, Savino R. Asthma and COPD proteomics: current approaches and future directions. Proteomics Clin Appl 2015; 9:203-20. [PMID: 25504544 DOI: 10.1002/prca.201400099] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 11/26/2014] [Accepted: 12/08/2014] [Indexed: 12/25/2022]
Abstract
Although asthma and chronic obstructive pulmonary disease COPD represent the two most common chronic respiratory diseases worldwide, the mechanisms underlying their pathobiology need to be further elucidated. Presently, differentiation of asthma and COPD are largely based on clinical and lung function parameters. However, the complexity of these multifactorial diseases may lead to misclassification and to inappropriate management strategies. Recently, tremendous progress in MS has extended the sensitivity, accuracy, and speed of analysis, enabling the identification of thousands of proteins per experiment. Beyond identification, MS has also greatly implemented quantitation issues allowing to assess qualitative-quantitative differences in protein profiles of different samples, in particular diseased versus normal. Herein, we provide a summary of recent proteomics-based investigations in the field of asthma/COPD, highlighting major issues related to sampling and processing procedures for proteomic analyses of specific airway and parenchymal specimens (induced sputum, exhaled breath condensate, epithelial lining fluid, bronchoalveolar and nasal lavage fluid), as well as blood-derived specimen (plasma and serum). Within such a context, together with current difficulties and limitations mainly due to lack of general standardization in preanalytical sampling procedure, our discussion will focus on the challenges and possible benefits of proteomic studies in phenotypic stratification of asthma and COPD.
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Affiliation(s)
- Rosa Terracciano
- Department of Health Sciences, "Magna Graecia" University of Catanzaro, Catanzaro, Italy
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11
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Shen Q, Yang M, Li L, Cheung HY. Graphene/TiO2 nanocomposite based solid-phase extraction and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry for lipidomic profiling of avocado (Persea americana Mill.). Anal Chim Acta 2014; 852:153-61. [DOI: 10.1016/j.aca.2014.09.022] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 09/10/2014] [Accepted: 09/11/2014] [Indexed: 12/14/2022]
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12
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Assessment of pre-analytical and analytical variables affecting peptidome profiling of gingival crevicular fluid by MALDI-TOF mass spectrometry. Clin Chim Acta 2014; 437:120-8. [DOI: 10.1016/j.cca.2014.07.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 06/24/2014] [Accepted: 07/16/2014] [Indexed: 12/26/2022]
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13
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Serra R, Buffone G, Costanzo G, Montemurro R, Scarcello E, Stillitano DM, Damiano R, de Franciscis S. Altered Metalloproteinase-9 Expression as Least Common Denominator between Varicocele, Inguinal Hernia, and Chronic Venous Disorders. Ann Vasc Surg 2014; 28:705-9. [DOI: 10.1016/j.avsg.2013.07.026] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 07/03/2013] [Accepted: 07/09/2013] [Indexed: 12/28/2022]
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14
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Effects of ambrisentan in a patient affected by combined pulmonary fibrosis and emphysema and by severe pulmonary hypertension: clinical, functional, and biomolecular findings. Clin Drug Investig 2013; 33:451-7. [PMID: 23605508 DOI: 10.1007/s40261-013-0083-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Combined pulmonary fibrosis and emphysema (CPFE) is a computed tomography (CT)-defined syndrome of combined pulmonary fibrosis and emphysema, characterized by subnormal spirometry, impairment of gas exchange, and high prevalence of pulmonary hypertension. Although endothelin-1 (ET-1) plays an important role in the development of lung fibrosis as well as in pulmonary hypertension, no ET-1-targeted therapy is currently recommended. Here we report a case of CPFE successfully treated with ambrisentan, an endothelin-A receptor antagonist, and also discuss the biologic mechanisms underlying the observed therapeutic effects. A 79-year-old man with chronic obstructive pulmonary disease (COPD) was referred to our respiratory unit as an outpatient for dyspnea. Clinical, radiologic, and laboratory findings suggested a diagnosis of chronic hypoxemic, type 1 respiratory failure, due to combined pulmonary fibrosis and emphysema, complicated by severe, precapillary pulmonary hypertension. Pharmacologic treatment with ambrisentan induced an initial improvement in clinical symptoms that proved to be very relevant 9 months later. In order to investigate the biologic mechanisms underlying the clinical effects of ambrisentan, we performed an "in vitro" study on primary cultures of fibrotic human lung fibroblasts, as well as on human umbilical vein endothelial cells, incubated for 24 and 48 h with ET-1, in the absence or presence of an overnight treatment with ambrisentan. ET-1 significantly increased cell proliferation and mitogen-activated protein kinase activation (P < 0.01). These effects were significantly (P < 0.01) inhibited by ambrisentan in both cell cultures. In conclusion, we hypothesize that the clinical benefits induced by ambrisentan in this patient with CPFE can be attributed to its vasodilator and anti-proliferative actions, exerted on pulmonary the vascular bed and lung fibroblasts.
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15
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Li M, Yang L, Bai Y, Liu H. Analytical Methods in Lipidomics and Their Applications. Anal Chem 2013; 86:161-75. [DOI: 10.1021/ac403554h] [Citation(s) in RCA: 145] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Min Li
- Beijing National Laboratory for Molecular Sciences, Key
Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry
of Education, Institute of Analytical Chemistry, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
| | - Li Yang
- Beijing National Laboratory for Molecular Sciences, Key
Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry
of Education, Institute of Analytical Chemistry, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yu Bai
- Beijing National Laboratory for Molecular Sciences, Key
Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry
of Education, Institute of Analytical Chemistry, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
| | - Huwei Liu
- Beijing National Laboratory for Molecular Sciences, Key
Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry
of Education, Institute of Analytical Chemistry, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
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16
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Serra R, Gallelli L, Buffone G, Molinari V, Stillitano DM, Palmieri C, de Franciscis S. Doxycycline speeds up healing of chronic venous ulcers. Int Wound J 2013; 12:179-84. [PMID: 23557025 DOI: 10.1111/iwj.12077] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 04/12/2013] [Accepted: 04/15/2013] [Indexed: 01/02/2023] Open
Abstract
Venous ulcers are common, with an overall prevalence of up to 2% in the general population of western countries, and have significant socioeconomic impact. Matrix metalloproteinases (MMPs) are involved in the alteration of extracellular matrix that could lead to venous ulceration. Sixty-four patients with venous ulcers were recruited in a 22-month period. All patients were subjected to the most appropriate treatment considering also the patient's wishes (compression therapy followed or not by vein surgery). Patients were randomised into two groups of 32 persons in each (groups A and B). Patients of group A in addition to the basic treatment, described above, received the administration of oral low doses of doxycycline 20 mg b.i.d. for 3 months, whereas patients of group B received basic treatment only. Healing was assessed by means of direct ulcer tracing with computerised planimetry. Group A showed a higher healing rate compared with group B. In group B, the lower healing rate was related to higher levels of MMP-9; neutrophil gelatinase-associated lipocalin and vascular endothelial growth factor, documented in plasma; wound fluid and biopsies executed and compared between both groups. Pharmacological treatments, as doxycycline administration, which by means of its immunomodulatory and anti-inflammatory actions, through the inhibition of MMP, could improve extracellular matrix functioning and represent a possible solution to support wound healing.
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Affiliation(s)
- Raffaele Serra
- Department of Medical and Surgical Science, University Magna Graecia of Catanzaro, Catanzaro, Italy; Interuniversity Center of Phlebolymphology, International Research and Educational Program in Clinical and Experimental Biotechnology, University Magna Graecia of Catanzaro, Catanzaro, Italy
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17
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Serra R, Buffone G, Falcone D, Molinari V, Scaramuzzino M, Gallelli L, de Franciscis S. Chronic venous leg ulcers are associated with high levels of metalloproteinases-9 and neutrophil gelatinase-associated lipocalin. Wound Repair Regen 2013; 21:395-401. [PMID: 23531093 DOI: 10.1111/wrr.12035] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Accepted: 12/25/2012] [Indexed: 01/09/2023]
Abstract
Venous ulcers are related to dysfunctions in extracellular matrix. Both matrix metalloproteinases (MMP) and neutrophil gelatinase-associated lipocalin (NGAL) could play a role in the healing process in patients with chronic venous ulcers. We evaluated the role of MMP-9 and NGAL in the healing process in venous ulceration. We performed an open-label, parallel groups, single clinical center study. Patients with chronic venous leg ulcers represented the test group (Group I), whereas patients without chronic ulcers represented the control group (Group II). In Group I plasma and wound fluid samples were collected at the time of admission, at the time of the surgery, and at the follow-up, while ulcer tissues were taken at the time of the surgery. In Group II, plasma and wound fluid were collected at admission and at the time of the surgery, whereas skin tissues were collected at the time of the surgery. Enzyme-linked immunosorbent assay test was used to evaluate the levels of MMP-9 and NGAL in plasma and wound fluid, whereas Western blot analysis was performed to estimate the expression of MMP-9 and NGAL in tissues. Enzyme-linked immunosorbent assay tests revealed significantly higher levels of MMP-9 and NGAL in both plasma and wound fluid of patients with ulcers compared to patients without ulcers (p < 0.01). Moreover, Western blot analysis documented an increased expression of MMP-9 and NGAL in biopsy tissue of patients with ulcers compared to patients without ulcers (p < 0.01). In conclusion MMP-9 and NGAL may correlate with the clinical course of venous ulcers.
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Affiliation(s)
- Raffaele Serra
- Department of Medical and Surgical Science, School of Medicine, University Magna Gracia of Catanzaro, Catanzaro, Italy.
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Savino R, Paduano S, Preianò M, Terracciano R. The proteomics big challenge for biomarkers and new drug-targets discovery. Int J Mol Sci 2012. [PMID: 23203042 PMCID: PMC3509558 DOI: 10.3390/ijms131113926] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
In the modern process of drug discovery, clinical, functional and chemical proteomics can converge and integrate synergies. Functional proteomics explores and elucidates the components of pathways and their interactions which, when deregulated, lead to a disease condition. This knowledge allows the design of strategies to target multiple pathways with combinations of pathway-specific drugs, which might increase chances of success and reduce the occurrence of drug resistance. Chemical proteomics, by analyzing the drug interactome, strongly contributes to accelerate the process of new druggable targets discovery. In the research area of clinical proteomics, proteome and peptidome mass spectrometry-profiling of human bodily fluid (plasma, serum, urine and so on), as well as of tissue and of cells, represents a promising tool for novel biomarker and eventually new druggable targets discovery. In the present review we provide a survey of current strategies of functional, chemical and clinical proteomics. Major issues will be presented for proteomic technologies used for the discovery of biomarkers for early disease diagnosis and identification of new drug targets.
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Affiliation(s)
- Rocco Savino
- Department of Health Sciences, Laboratory of Mass Spectrometry and Proteomics, University "Magna Græcia", Catanzaro, University Campus, Europa Avenue, 88100 Catanzaro, Italy.
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