201
|
Acinetobacter baumannii OxyR Regulates the Transcriptional Response to Hydrogen Peroxide. Infect Immun 2018; 87:IAI.00413-18. [PMID: 30297527 DOI: 10.1128/iai.00413-18] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 10/03/2018] [Indexed: 12/21/2022] Open
Abstract
Acinetobacter baumannii is a Gram-negative opportunistic pathogen that causes diverse infections, including pneumonia, bacteremia, and wound infections. Due to multiple intrinsic and acquired antimicrobial-resistance mechanisms, A. baumannii isolates are commonly multidrug resistant, and infections are notoriously difficult to treat. The World Health Organization recently highlighted carbapenem-resistant A. baumannii as a "critical priority" for the development of new antimicrobials because of the risk to human health posed by this organism. Therefore, it is important to discover the mechanisms used by A. baumannii to survive stresses encountered during infection in order to identify new drug targets. In this study, by use of in vivo imaging, we identified hydrogen peroxide (H2O2) as a stressor produced in the lung during A. baumannii infection and defined OxyR as a transcriptional regulator of the H2O2 stress response. Upon exposure to H2O2, A. baumannii differentially transcribes several hundred genes. However, the transcriptional upregulation of genes predicted to detoxify hydrogen peroxide is abolished in an A. baumannii strain in which the transcriptional regulator oxyR is genetically inactivated. Moreover, inactivation of oxyR in both antimicrobial-susceptible and multidrug-resistant A. baumannii strains impairs growth in the presence of H2O2 OxyR is a direct regulator of katE and ahpF1, which encode the major H2O2-degrading enzymes in A. baumannii, as confirmed through measurement of promoter binding by recombinant OxyR in electromobility shift assays. Finally, an oxyR mutant is less fit than wild-type A. baumannii during infection of the murine lung. This work reveals a mechanism used by this important human pathogen to survive H2O2 stress encountered during infection.
Collapse
|
202
|
Halle MB, Lee KJ, Yudhistira T, Choi JH, Park HS, Churchill DG. A Hemicyanine-Embedded Diphenylselenide-Containing Probe "HemiSe" in which SePh 2 Stays Reduced for Selective Detection of Superoxide in Living Cells. Chem Asian J 2018; 13:3895-3902. [PMID: 30300960 DOI: 10.1002/asia.201801339] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/08/2018] [Indexed: 12/21/2022]
Abstract
A simple one-step synthesis of fluorescent probe HemiSe has been developed for the detection of superoxide (O2 .- ). The probe undergoes reaction specifically with O2 .- when in the presence of other competitive ROS/RNS/metal ions. The diphenylselenide was incorporated to completely quench the fluorescence of the hemicyanine unit through the action of a photoinduced electron transfer (PET) photomechanism. However, after the addition of O2 .- , the latent fluorophore regains its fluorescence owing to the reaction at the C=C bond of the hemicyanine with O2 .- through nucleophilic attack; the increase in blue emission is due to a reaction of the double bond within HemiSe followed by an increase in fluorescence quantum yield (Φ) up to 0.45; the limit of detection (LOD) is 11.9 nm. A time-dependent study shows that HemiSe can detect superoxide within 13 min with high sensitivity, high selectivity, over a wide pH range, and through confirmation with a xanthine/xanthine oxidase biochemical assay (λem =439 nm). A study in the RAW 264.7 macrophage living cells also shows that HemiSe is not toxic, cell permeable (experimental log P=2.11); confocal imaging results show that HemiSe can detect O2 .- in endogenous and exogeneous systems.
Collapse
Affiliation(s)
- Mahesh B Halle
- Molecular Logic Gate Laboratory, Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Republic of Korea
| | - Kyung Jin Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Republic of Korea
| | - Tesla Yudhistira
- Molecular Logic Gate Laboratory, Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Republic of Korea
| | - Jae Hyuck Choi
- Molecular Logic Gate Laboratory, Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Republic of Korea
| | - Hee-Sung Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Republic of Korea
| | - David G Churchill
- Molecular Logic Gate Laboratory, Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 305-701, Republic of Korea.,KI for Health Science and Technology, KI Institute, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Republic of Korea
| |
Collapse
|
203
|
A DNA-based fluorescent reporter maps HOCl production in the maturing phagosome. Nat Chem Biol 2018; 15:1165-1172. [PMID: 30531966 DOI: 10.1038/s41589-018-0176-3] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 10/23/2018] [Indexed: 12/21/2022]
Abstract
Phagocytes destroy pathogens by trapping them in a transient organelle called the phagosome, where they are bombarded with reactive oxygen species (ROS) and reactive nitrogen species (RNS). Imaging reactive species within the phagosome would directly reveal the chemical dynamics underlying pathogen destruction. Here we introduce a fluorescent, DNA-based combination reporter, cHOClate, which simultaneously images hypochlorous acid (HOCl) and pH quantitatively. Using cHOClate targeted to phagosomes in live cells, we successfully map phagosomal production of a specific ROS, HOCl, as a function of phagosome maturation. We found that phagosomal acidification was gradual in macrophages and upon completion, HOCl was released in a burst. This revealed that phagosome-lysosome fusion was essential not only for phagosome acidification, but also for providing the chloride necessary for myeloperoxidase activity. This method can be expanded to image several kinds of ROS and RNS and be readily applied to identify how resistant pathogens evade phagosomal killing.
Collapse
|
204
|
Huang X, Miao LH, Lin Y, Pan WJ, Ren MC, Ge XP, Liu B, Zhou QL. High glucose affected respiratory burst activity of peripheral leukocyte via G6PD and NOX inhibition in Megalobrama amblycephala. FISH & SHELLFISH IMMUNOLOGY 2018; 83:243-248. [PMID: 30213643 DOI: 10.1016/j.fsi.2018.09.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 08/31/2018] [Accepted: 09/07/2018] [Indexed: 06/08/2023]
Abstract
High glucose levels are known to impair growth and immune function in fish. Here we investigated the role of glucose-6-phosphate dehydrogenase (G6PD) and NADPH oxidase (NOX) in high glucose-associated impairment of leukocyte respiratory burst activity in Megalobrama amblycephala. We cultured peripheral leukocytes isolated from M. amblycephala with media containing no glucose (non-glucose group), 11.1 mmol/L d-glucose (physiologic glucose group), 22.2 mmol/L d-glucose (high-glucose group), or 11.1 mmol/L d-glucose + 100 μmol/L dehydroepiandrosterone (DHEA) (DHEA-treated group). After 24 h, we assayed production of reactive oxygen species (ROS) as a measure of respiratory burst function as well as activity of G6PD and NOX. The high-glucose group and DHEA-treated group showed significantly reduced respiratory burst function, reduced production of ROS, and reduced G6PD and NOX activity at 24 h, compared to the non-glucose and physiologic glucose groups (P < 0.05). The degree of impairment was similar between high-glucose and DHEA-treated groups (P > 0.05). These findings suggest that reduced NADPH availability likely underlies the suppression of respiratory burst function in M. amblycephala leukocytes exposed to high glucose levels.
Collapse
Affiliation(s)
- Xin Huang
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, 214081, China.
| | - Ling-Hong Miao
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China
| | - Yan Lin
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China
| | - Wen-Jing Pan
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, 214081, China
| | - Ming-Chun Ren
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China
| | - Xian-Ping Ge
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, 214081, China; Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China.
| | - Bo Liu
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, 214081, China; Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China
| | - Qun-Lan Zhou
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China
| |
Collapse
|
205
|
Ramirez-Otarola N, Sarria M, Rivera DS, Sabat P, Bozinovic F. Ecoimmunology in degus: interplay among diet, immune response, and oxidative stress. J Comp Physiol B 2018; 189:143-152. [PMID: 30488104 DOI: 10.1007/s00360-018-1195-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 11/13/2018] [Accepted: 11/22/2018] [Indexed: 10/27/2022]
Abstract
The relationships between immunity, oxidative stress, and diet have not often been studied together. Despite this, it has been shown that dietary proteins can have effects on the functioning of the immune system and the oxidative status of animals. Here we evaluated the effects of dietary proteins on the response to an antigen and oxidative status of Octodon degus (Rodentia). We acclimated adult individuals to high-protein and low-protein diets and evaluated several aspects of the acute phase response and variables associated with oxidative status. After the immune challenge, animals acclimated to the high-protein diet had more inflammatory proteins and body mass losses than the group acclimated to a low-protein diet. Overall, the immune challenge increased the production of inflammatory proteins, total antioxidant capacity, lipid peroxidation, and duration of rest periods. In contrast, we did not find an interaction between diet and the challenge with the antigen. Overall, our results do not reveal an enhanced response to an antigen nor effects on the oxidative status of degus individuals subjected to a high-protein diet.
Collapse
Affiliation(s)
- Natalia Ramirez-Otarola
- Departamento de Ecología, Center of Applied Ecology and Sustainability (CAPES), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Avenida Libertador Bernardo O'Higgins #340, 6513677, Santiago, Chile. .,Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile.
| | - Mauricio Sarria
- Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile
| | - Daniela S Rivera
- Departamento de Ecología, Center of Applied Ecology and Sustainability (CAPES), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Avenida Libertador Bernardo O'Higgins #340, 6513677, Santiago, Chile
| | - Pablo Sabat
- Departamento de Ecología, Center of Applied Ecology and Sustainability (CAPES), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Avenida Libertador Bernardo O'Higgins #340, 6513677, Santiago, Chile.,Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile
| | - Francisco Bozinovic
- Departamento de Ecología, Center of Applied Ecology and Sustainability (CAPES), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Avenida Libertador Bernardo O'Higgins #340, 6513677, Santiago, Chile
| |
Collapse
|
206
|
Kitamura A, Minematsu T, Nakagami G, Sanada H. Assessment of histopathology of wounds based on protein distribution detected by wound blotting. SAGE Open Med 2018; 6:2050312118812220. [PMID: 30455949 PMCID: PMC6236855 DOI: 10.1177/2050312118812220] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 10/10/2018] [Indexed: 01/22/2023] Open
Abstract
Background: Shortening the duration of healing based on an accurate assessment is
important in pressure ulcer management. This study focused on the peroxidase
and alkaline phosphatase activity detected by wound blotting, a non-invasive
method of collecting wound exudate, to establish a non-invasive and
point-of-care assessment method for analyzing the histopathology of wounds
using an animal model. Methods: Wounds were created on the dorsal skin of rats. Peroxidase and alkaline
phosphatase activities in the wound exudate were detected by wound blotting
on post-wounding days 1, 4, 7, and 10. Wound tissue was collected on the
same sampling days. Peroxidase and alkaline phosphatase activity within the
tissue and myeloperoxidase were visualized. Two types of peroxidase
activities were detected by wound blotting: ring and non-ring signals. The
histopathological features were compared between wounds with ring and
non-ring signals. Results: The wounds with ring signals showed a high level of peroxidase activity, and
histological analysis demonstrated that the secreted or deviated peroxidase
activity originated from myeloperoxidase, indicating a strong inflammation
reaction within the tissue. The histopathology of wounds related to the
alkaline phosphatase signals was not identified. Conclusion: The results suggested that ring signals indicated a strong inflammatory
reaction and that they could be used to assess non-visible inflammation.
Collapse
Affiliation(s)
- Aya Kitamura
- Department of Gerontological
Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo,
Tokyo, Japan
| | - Takeo Minematsu
- Department of Skincare Science, Graduate
School of Medicine, The University of Tokyo, Tokyo, Japan
- Global Nursing Research Center, Graduate
School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Gojiro Nakagami
- Department of Gerontological
Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo,
Tokyo, Japan
- Global Nursing Research Center, Graduate
School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiromi Sanada
- Department of Gerontological
Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo,
Tokyo, Japan
- Global Nursing Research Center, Graduate
School of Medicine, The University of Tokyo, Tokyo, Japan
- Hiromi Sanada, Department of Gerontological
Nursing/Wound Care Management, Graduate School of Medicine, The University of
Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| |
Collapse
|
207
|
Amin F, Bano B. Damage of cystatin due to ROS-generation and radical-scavenging activity of antioxidants and associated compounds. Int J Biol Macromol 2018; 119:369-379. [DOI: 10.1016/j.ijbiomac.2018.07.100] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 07/12/2018] [Accepted: 07/16/2018] [Indexed: 01/19/2023]
|
208
|
Belambri SA, Rolas L, Raad H, Hurtado-Nedelec M, Dang PMC, El-Benna J. NADPH oxidase activation in neutrophils: Role of the phosphorylation of its subunits. Eur J Clin Invest 2018; 48 Suppl 2:e12951. [PMID: 29757466 DOI: 10.1111/eci.12951] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 05/08/2018] [Indexed: 12/14/2022]
Abstract
Neutrophils are key cells of innate immunity and during inflammation. Upon activation, they produce large amounts of superoxide anion (O2 -. ) and ensuing reactive oxygen species (ROS) to kill phagocytized microbes. The enzyme responsible for O2 -. production is called the phagocyte NADPH oxidase. This is a multicomponent enzyme system that becomes active after assembly of four cytosolic proteins (p47phox , p67phox , p40phox and Rac2) with the transmembrane proteins (p22phox and gp91phox , which form the cytochrome b558 ). gp91phox represents the catalytic subunit of the NADPH oxidase and is also called NOX2. NADPH oxidase-derived ROS are essential for microbial killing and innate immunity; however, excessive ROS production induces tissue injury and prolonged inflammatory reactions that contribute to inflammatory diseases. Thus, NADPH oxidase activation must be tightly regulated in time and space to limit ROS production. NADPH oxidase activation is regulated by several processes such as phosphorylation of its components, exchange of GDP/GTP on Rac2 and binding of p47phox and p40phox to phospholipids. This review aims to provide new insights into the role of the phosphorylation of the NADPH oxidase components, that is gp91phox , p22phox , p47phox , p67phox and p40phox , in the activation of this enzyme.
Collapse
Affiliation(s)
- Sahra A Belambri
- Centre de Recherche sur l'Inflammation (CRI), INSERM-U1149, CNRS-ERL8252, Laboratoire d'Excellence Inflamex, Université Paris Diderot-Sorbonne Paris Cité, Faculté de Médecine, Site Xavier Bichat, Paris, France.,Laboratoire de Biochimie Appliquée, Équipe de Recherche: Stress Oxydatif et Inflammation, Département de Biochimie, Faculté des Sciences De la Nature et de la Vie, Université Ferhat Abbes 1, Sétif, Algérie
| | - Loïc Rolas
- Centre de Recherche sur l'Inflammation (CRI), INSERM-U1149, CNRS-ERL8252, Laboratoire d'Excellence Inflamex, Université Paris Diderot-Sorbonne Paris Cité, Faculté de Médecine, Site Xavier Bichat, Paris, France
| | - Houssam Raad
- Centre de Recherche sur l'Inflammation (CRI), INSERM-U1149, CNRS-ERL8252, Laboratoire d'Excellence Inflamex, Université Paris Diderot-Sorbonne Paris Cité, Faculté de Médecine, Site Xavier Bichat, Paris, France
| | - Margarita Hurtado-Nedelec
- Centre de Recherche sur l'Inflammation (CRI), INSERM-U1149, CNRS-ERL8252, Laboratoire d'Excellence Inflamex, Université Paris Diderot-Sorbonne Paris Cité, Faculté de Médecine, Site Xavier Bichat, Paris, France.,Département d'Immunologie et d'Hématologie, UF Dysfonctionnements Immunitaires, HUPNVS, Hôpital Bichat, Paris, France
| | - Pham My-Chan Dang
- Centre de Recherche sur l'Inflammation (CRI), INSERM-U1149, CNRS-ERL8252, Laboratoire d'Excellence Inflamex, Université Paris Diderot-Sorbonne Paris Cité, Faculté de Médecine, Site Xavier Bichat, Paris, France
| | - Jamel El-Benna
- Centre de Recherche sur l'Inflammation (CRI), INSERM-U1149, CNRS-ERL8252, Laboratoire d'Excellence Inflamex, Université Paris Diderot-Sorbonne Paris Cité, Faculté de Médecine, Site Xavier Bichat, Paris, France
| |
Collapse
|
209
|
Xie X, Wu T, Wang X, Li Y, Wang K, Zhao Z, Jiao X, Tang B. A two-photon fluorescent probe for ratiometric visualization of hypochlorous acid in live cells and animals based on a selenide oxidation/elimination tandem reaction. Chem Commun (Camb) 2018; 54:11965-11968. [PMID: 30289138 DOI: 10.1039/c8cc07312k] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Utilizing the oxidation/elimination tandem reaction of the α-phenylseleno carbonyl moiety, a two-photon fluorescent probe for ratiometric visualization of hypochlorous acid was developed. Its superior sensing performance and practical applications were well demonstrated.
Collapse
Affiliation(s)
- Xilei Xie
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China.
| | - Tianhong Wu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China.
| | - Xu Wang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China.
| | - Yong Li
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China.
| | - Kaiye Wang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China.
| | - Zhiwen Zhao
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China.
| | - Xiaoyun Jiao
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China.
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China.
| |
Collapse
|
210
|
da Silva-Leite KES, Girão DKFB, de Freitas Pires A, Assreuy AMS, de Moraes PAF, Cunha AP, Ricardo NMPS, Criddle DN, de Souza MHLP, Pereira MG, Soares PMG. Ximenia americana heteropolysaccharides ameliorate inflammation and visceral hypernociception in murine caerulein-induced acute pancreatitis: Involvement of CB2 receptors. Biomed Pharmacother 2018; 106:1317-1324. [DOI: 10.1016/j.biopha.2018.07.067] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 07/10/2018] [Accepted: 07/13/2018] [Indexed: 01/12/2023] Open
|
211
|
Henkel R, Sandhu IS, Agarwal A. The excessive use of antioxidant therapy: A possible cause of male infertility? Andrologia 2018; 51:e13162. [PMID: 30259539 DOI: 10.1111/and.13162] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 08/22/2018] [Accepted: 09/04/2018] [Indexed: 12/18/2022] Open
Abstract
Reactive oxygen species and oxidative stress are closely associated with various pathologies such as neurodegenerative diseases, ageing and male infertility. Hence, antioxidants such as vitamin C, vitamin E, N-acetyl cysteine, L-carnitine and folic acid are regularly used in various treatment regimens to protect cells from the damage induced by free radicals. However, given their over-the-counter availability at unnaturally high concentrations and also the fact that they are commonly added to various food products, patients may run a risk of consuming excessive dosages of these compounds, which may then be toxic. The few studies that have assessed antioxidant overuse and the associated adverse effects found that large doses of dietary antioxidant supplements have varying-if any-therapeutic effects even though free radicals clearly damage cells-a phenomenon that has been termed the "antioxidant paradox." Furthermore, overuse of antioxidants such as vitamin C, vitamin E, N-acetyl cysteine may lead to reductive stress, which is reported to be as dangerous to cells as oxidative stress and can be the cause of diseases such as cancer or cardiomyopathy. Therefore, we feel that there is a need for more elaborate research to establish the clear benefits and risks involved in antioxidant therapy for male infertility.
Collapse
Affiliation(s)
- Ralf Henkel
- Department of Medical Bioscience, University of the Western Cape, Bellville, South Africa
| | | | - Ashok Agarwal
- American Centre for Reproductive Medicine, Cleveland Clinic, Cleveland, Ohio
| |
Collapse
|
212
|
Vieira ML, Teixeira AF, Pidde G, Ching ATC, Tambourgi DV, Nascimento ALTO, Herwald H. Leptospira interrogans outer membrane protein LipL21 is a potent inhibitor of neutrophil myeloperoxidase. Virulence 2018; 9:414-425. [PMID: 29235397 PMCID: PMC5955187 DOI: 10.1080/21505594.2017.1407484] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Leptospirosis is a widespread zoonotic and neglected infectious disease of human and veterinary concern that is caused by pathogenic Leptospira species. After entrance in the host, pathogenic leptospires evade the host natural defense mechanisms in order to propagate and disseminate to multiple organs. Myeloperoxidase is an enzyme stored in neutrophils azurophilic granules, and is released upon neutrophil activation to produce mainly hypochlorous acid, a strong oxidant and potent antimicrobial agent. In the present investigation, we studied the modulation of myeloperoxidase activity by L. interrogans serovar Copenhageni. We show that leptospires and their culture supernatants are able to inhibit both peroxidase and chlorination activities of myeloperoxidase, without interfering with neutrophil degranulation. By leptospiral outer membrane protein extraction and fractionation, we identified the proteins LipL21 and LipL45 as myeloperoxidase inhibitors, constituting new Leptospira virulence factors. Accordingly, we propose a function for the protein LipL21, one of the most expressed leptospiral outer membrane proteins. Our results show a novel innate immune evasion mechanism by which leptospires interfere with the host response in order to cope with the host oxidative stress and efficiently achieve dissemination and colonization.
Collapse
Affiliation(s)
- Monica L Vieira
- a Department of Clinical Sciences, Lund, Division of Infection Medicine , Lund University , Lund , Sweden.,b Centro de Biotecnologia, Instituto Butantan , Avenida Vital Brazil, São Paulo , SP , Brazil
| | - Aline F Teixeira
- b Centro de Biotecnologia, Instituto Butantan , Avenida Vital Brazil, São Paulo , SP , Brazil
| | - Giselle Pidde
- c Laboratório de Imunoquímica, Instituto Butantan , Avenida Vital Brazil, São Paulo , SP , Brazil
| | - Ana T C Ching
- c Laboratório de Imunoquímica, Instituto Butantan , Avenida Vital Brazil, São Paulo , SP , Brazil
| | - Denise V Tambourgi
- c Laboratório de Imunoquímica, Instituto Butantan , Avenida Vital Brazil, São Paulo , SP , Brazil
| | | | - Heiko Herwald
- a Department of Clinical Sciences, Lund, Division of Infection Medicine , Lund University , Lund , Sweden
| |
Collapse
|
213
|
Paliogiannis P, Fois AG, Collu C, Bandinu A, Zinellu E, Carru C, Pirina P, Mangoni AA, Zinellu A. Oxidative stress-linked biomarkers in idiopathic pulmonary fibrosis: a systematic review and meta-analysis. Biomark Med 2018; 12:1175-1184. [PMID: 30191745 DOI: 10.2217/bmm-2018-0108] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
AIM The aim of this meta-analysis was to investigate associations between idiopathic pulmonary fibrosis (IPF) and markers of oxidative stress (OS) measured in different biological samples. METHODS A systematic search of publications listed in PubMed, Web of Science, Scopus and Google Scholar from inception to December 2017 was conducted. RESULTS Significant differences between IPF patients and controls were observed for all biomarkers (thiobarbituric acid reactive substances, hydroperoxides and glutathione), barring systemic isoprostanes. CONCLUSION This meta-analysis showed a consistent increase in the concentrations of OS markers or a reduction in antioxidant markers, in patients with IPF, independent of the type of biological sample. Pending the results of further studies, OS biomarkers might be useful for the diagnosis and monitoring of IPF.
Collapse
Affiliation(s)
- Panagiotis Paliogiannis
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43, 07100, Sassari, Italy
| | - Alessandro G Fois
- Department of Clinical, Surgical & Experimental Sciences, University of Sassari, Viale San Pietro 43, 07100, Sassari, Italy
| | - Claudia Collu
- Department of Clinical, Surgical & Experimental Sciences, University of Sassari, Viale San Pietro 43, 07100, Sassari, Italy
| | - Antonietta Bandinu
- Department of Clinical, Surgical & Experimental Sciences, University of Sassari, Viale San Pietro 43, 07100, Sassari, Italy
| | - Elisabetta Zinellu
- Department of Clinical, Surgical & Experimental Sciences, University of Sassari, Viale San Pietro 43, 07100, Sassari, Italy
| | - Ciriaco Carru
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43, 07100, Sassari, Italy
| | - Pietro Pirina
- Department of Clinical, Surgical & Experimental Sciences, University of Sassari, Viale San Pietro 43, 07100, Sassari, Italy
| | - Arduino A Mangoni
- Department of Clinical Pharmacology, College of Medicine & Public Health, Flinders University, Adelaide, Australia
| | - Angelo Zinellu
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43, 07100, Sassari, Italy
| |
Collapse
|
214
|
Kurapati R, Mukherjee SP, Martín C, Bepete G, Vázquez E, Pénicaud A, Fadeel B, Bianco A. Degradation of Single‐Layer and Few‐Layer Graphene by Neutrophil Myeloperoxidase. Angew Chem Int Ed Engl 2018; 57:11722-11727. [DOI: 10.1002/anie.201806906] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Rajendra Kurapati
- University of StrasbourgCNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR 3572 67000 Strasbourg France
| | - Sourav P. Mukherjee
- Nanosafety & Nanomedicine Laboratory, Division of Molecular ToxicologyInstitute of Environmental MedicineKarolinska Institutet Stockholm Sweden
| | - Cristina Martín
- University of StrasbourgCNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR 3572 67000 Strasbourg France
- Instituto Regional de Investigación Científica Aplicada (IRICA)Universidad de Castilla-La Mancha Avda Camilo Jose Cela 13071 Ciudad Real Spain
| | - George Bepete
- CNRS, Centre de Recherche Paul Pascal (CRPP), UMR 5031Université Bordeaux F-33600 Pessac France
| | - Ester Vázquez
- Instituto Regional de Investigación Científica Aplicada (IRICA)Universidad de Castilla-La Mancha Avda Camilo Jose Cela 13071 Ciudad Real Spain
- Departamento de Química Orgánica, Facultad de CienciasyTecnologías QuímicasUniversidad de Castilla-La Mancha 13071 Ciudad Real Spain
| | - Alain Pénicaud
- CNRS, Centre de Recherche Paul Pascal (CRPP), UMR 5031Université Bordeaux F-33600 Pessac France
| | - Bengt Fadeel
- Nanosafety & Nanomedicine Laboratory, Division of Molecular ToxicologyInstitute of Environmental MedicineKarolinska Institutet Stockholm Sweden
| | - Alberto Bianco
- University of StrasbourgCNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR 3572 67000 Strasbourg France
| |
Collapse
|
215
|
Qadri M, Jay GD, Zhang LX, Wong W, Reginato AM, Sun C, Schmidt TA, Elsaid KA. Recombinant human proteoglycan-4 reduces phagocytosis of urate crystals and downstream nuclear factor kappa B and inflammasome activation and production of cytokines and chemokines in human and murine macrophages. Arthritis Res Ther 2018; 20:192. [PMID: 30157934 PMCID: PMC6116363 DOI: 10.1186/s13075-018-1693-x] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 08/01/2018] [Indexed: 01/29/2023] Open
Abstract
Background Gout is an inflammatory arthritis caused by monosodium urate monohydrate (MSU) crystals’ joint deposition. MSU phagocytosis by resident macrophages is a key step in gout pathogenesis. MSU phagocytosis triggers nuclear factor kappa B (NFκB) activation and production of cytokines and chemokines. Proteoglycan-4 (PRG4) is a glycoprotein produced by synovial fibroblasts and exerts an anti-inflammatory effect in the joint mediated by its interaction with cell surface receptor CD44. PRG4 also binds and antagonizes TLR2 and TLR4. The objective of this study is to evaluate the efficacy of recombinant human PRG4 (rhPRG4) in suppressing MSU-induced inflammation and mechanical allodynia in vitro and in vivo. Methods THP-1 macrophages were incubated with MSU crystals ± rhPRG4 or bovine submaxillary mucin (BSM), and crystal phagocytosis, cytokines and chemokines expression and production were determined. NFκB p65 subunit nuclear translocation, NLRP3 induction, caspase-1 activation and conversion of proIL-1β to mature IL-1β were studied. MSU phagocytosis by Prg4+/+ and Prg4−/− peritoneal macrophages was determined in the absence or presence of rhPRG4, BSM, anti-CD44, anti-TLR2, anti-TLR4 and isotype control antibodies. Rhodamine-labeled rhPRG4 was incubated with murine macrophages and receptor colocalization studies were performed. Lewis rats underwent intra-articular injection of MSU crystals followed by intra-articular treatment with PBS or rhPRG4. Weight bearing and SF myeloperoxidase activities were determined. Results rhPRG4 reduced MSU crystal phagocytosis at 4 h (p < 0.01) and IL-1β, TNF-α, IL-8 and MCP-1 expression and production at 6 h (p < 0.05). BSM did not alter MSU phagocytosis or IL-1β production in human and murine macrophages. rhPRG4 treatment reduced NFκB nuclear translocation, NLRP3 expression, caspase-1 activation and generation of mature IL-1β (p < 0.05). MSU-stimulated IL-1β production was higher in Prg4−/− macrophages compared to Prg4+/+ macrophages (p < 0.001). rhPRG4, anti-CD44, anti-TLR2 and anti-TLR4 antibody treatments reduced MSU phagocytosis and IL-1β production in murine macrophages (p < 0.05). rhPRG4 preferentially colocalized with CD44 on Prg4−/− peritoneal macrophages compared to TLR2 or TLR4 (p < 0.01). rhPRG4 normalized weight bearing and reduced SF myeloperoxidase activity compared to PBS in vivo. Conclusion rhPRG4 inhibits MSU crystal phagocytosis and exhibits an anti-inflammatory and anti-nociceptive activity in vitro and in vivo. rhPRG4’s anti-inflammatory mechanism may be due to targeting CD44 on macrophages.
Collapse
Affiliation(s)
- Marwa Qadri
- Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Rinker Health Sciences Campus, 9401 Jeronimo Road, Irvine, CA, 92618, USA
| | - Gregory D Jay
- Department of Emergency Medicine, Rhode Island Hospital, Providence, RI, USA.,Department of Biomedical Engineering, Brown University, Providence, RI, USA
| | - Ling X Zhang
- Department of Emergency Medicine, Rhode Island Hospital, Providence, RI, USA
| | - Wendy Wong
- Department of Emergency Medicine, Rhode Island Hospital, Providence, RI, USA
| | - Anthony M Reginato
- Division of Rheumatology and Department of Dermatology, Rhode Island Hospital, Providence, RI, USA
| | - Changqi Sun
- Division of Rheumatology and Department of Dermatology, Rhode Island Hospital, Providence, RI, USA
| | - Tannin A Schmidt
- Biomedical Engineering Department, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT, USA
| | - Khaled A Elsaid
- Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Rinker Health Sciences Campus, 9401 Jeronimo Road, Irvine, CA, 92618, USA.
| |
Collapse
|
216
|
Kapoor S, Opneja A, Nayak L. The role of neutrophils in thrombosis. Thromb Res 2018; 170:87-96. [PMID: 30138777 DOI: 10.1016/j.thromres.2018.08.005] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 07/30/2018] [Accepted: 08/08/2018] [Indexed: 02/07/2023]
Abstract
Despite significant evidence implicating an important role for neutrophils in thrombosis, their impact on the thrombotic process has remained a matter of controversy. Until 2010, platelets, coagulation factors, fibrinogen and monocytes were implicated in the thrombotic process. Several studies conducted over the last decade now support the growing notion that neutrophils indeed do contribute significantly to this process. Neutrophils can contribute to pathologic venous and arterial thrombosis or 'immunothrombosis' by the release of neutrophil extracellular traps (NETs) and NET release is emerging as a major contributor to thrombogenesis in pathologic situations such as sepsis and malignancy. Further, blood-cell derived microparticles, including those from neutrophils, have been implicated in thrombus formation. Finally, inflammasome activation in the neutrophil identifies another important mechanism that may be operative in neutrophil-driven risk for thrombosis. The knowledge of these roles of neutrophils in thrombosis may pave the road for novel anti-thrombotic agents in the future that do not affect hemostasis.
Collapse
Affiliation(s)
- Sargam Kapoor
- University Hospitals Cleveland Medical Center, Division of Hematology and Oncology, United States; Case Western Reserve University, Department of Medicine, United States
| | - Aman Opneja
- University Hospitals Cleveland Medical Center, Division of Hematology and Oncology, United States; Case Western Reserve University, Department of Medicine, United States
| | - Lalitha Nayak
- University Hospitals Cleveland Medical Center, Division of Hematology and Oncology, United States; Case Western Reserve University, Department of Medicine, United States.
| |
Collapse
|
217
|
Kazumura K, Takeuchi K, Hara A, Miwa T, Hattori M, Wu Y, Morishita N, Tsuchiya H, Osawa T. Rapid on-site dual optical system to measure specific reactive oxygen species (O2-• and OCl-) in a tiny droplet of whole blood. PLoS One 2018; 13:e0200573. [PMID: 30067774 PMCID: PMC6070198 DOI: 10.1371/journal.pone.0200573] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 06/28/2018] [Indexed: 01/15/2023] Open
Abstract
Oxidative stress has been implicated in various disorders and controlling it would be important for healthy life. We have developed a new optical system for easily and accurately measuring oxidative stress in whole blood. It is optimized for simultaneously detecting reactive oxygen species (ROS) and highly reactive ROS (hROS), elicited mostly by white blood cells in a few microliters of blood. Results obtained by using this system show at least four important findings. 1) chemiluminescence of MCLA was confirmed to be attributable to O2-•. 2) PMA-stimulated cells released O2-• longer and more slowly than fMLP-stimulated ones. 3) fluorescence produced by APF oxidation was confirmed to be attributable to hROS, mostly OCl-, produced by myeloperoxidase. 4) the generation of OCl- was found to be a slower process than the O2-• generation. We also conducted pilot studies of oxidative stress in healthy volunteers.
Collapse
Grants
- Funding: This work was supported by the Councilfor Science, Technology and Innovation (CSTI),Cross-ministerial Strategic Innovation Promotion Program (SIP) and`Technologies for creating next-generation agriculture, forestry and fisheries'(funding agency: Bio-oriented Technology Research Advancement Institution, NARO). The funder had no role in study design, data collection and analysis, decision to publish, or preparation ofthe manuscript.KK, KT, AH, TM, MH, NM, and HT are employed by Hamamatsu Photonics K.K. The funder provided support in the form of salaries for authors [KK, KT, AH, TM, MH, NM, and HT],but did not have any additional role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript.YW is employed by Healthcare Systems Co. Ltd. The funder provided support in the form of salaries for authors [YW],but did not have any additional role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript.The specific roles of these authors are articulated in the `author contributions' section.
Collapse
Affiliation(s)
- Kimiko Kazumura
- Central Research Laboratory, Hamamatsu Photonics K.K., Shizuoka, Japan
| | - Kozo Takeuchi
- Central Research Laboratory, Hamamatsu Photonics K.K., Shizuoka, Japan
| | - Akiko Hara
- Central Research Laboratory, Hamamatsu Photonics K.K., Shizuoka, Japan
| | - Toshiyuki Miwa
- Central Research Laboratory, Hamamatsu Photonics K.K., Shizuoka, Japan
| | - Masaki Hattori
- Global Strategic Challenge Center, Hamamatsu Photonics K.K., Shizuoka, Japan
| | - Yuqiu Wu
- Department of Research and Development, Healthcare Systems Co. Ltd., Aichi, Japan
| | | | - Hiroshi Tsuchiya
- Central Research Laboratory, Hamamatsu Photonics K.K., Shizuoka, Japan
| | - Toshihiko Osawa
- Department of Health and Nutrition, Faculty of Psychological and Physical Science, Aichi Gakuin University, Aichi, Japan
| |
Collapse
|
218
|
Kurapati R, Mukherjee SP, Martín C, Bepete G, Vázquez E, Pénicaud A, Fadeel B, Bianco A. Degradation of Single-Layer and Few-Layer Graphene by Neutrophil Myeloperoxidase. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806906] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Rajendra Kurapati
- University of Strasbourg; CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR 3572; 67000 Strasbourg France
| | - Sourav P. Mukherjee
- Nanosafety & Nanomedicine Laboratory, Division of Molecular Toxicology; Institute of Environmental Medicine; Karolinska Institutet; Stockholm Sweden
| | - Cristina Martín
- University of Strasbourg; CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR 3572; 67000 Strasbourg France
- Instituto Regional de Investigación Científica Aplicada (IRICA); Universidad de Castilla-La Mancha; Avda Camilo Jose Cela 13071 Ciudad Real Spain
| | - George Bepete
- CNRS, Centre de Recherche Paul Pascal (CRPP), UMR 5031; Université Bordeaux; F-33600 Pessac France
| | - Ester Vázquez
- Instituto Regional de Investigación Científica Aplicada (IRICA); Universidad de Castilla-La Mancha; Avda Camilo Jose Cela 13071 Ciudad Real Spain
- Departamento de Química Orgánica, Facultad de Ciencias y Tecnologías Químicas; Universidad de Castilla-La Mancha; 13071 Ciudad Real Spain
| | - Alain Pénicaud
- CNRS, Centre de Recherche Paul Pascal (CRPP), UMR 5031; Université Bordeaux; F-33600 Pessac France
| | - Bengt Fadeel
- Nanosafety & Nanomedicine Laboratory, Division of Molecular Toxicology; Institute of Environmental Medicine; Karolinska Institutet; Stockholm Sweden
| | - Alberto Bianco
- University of Strasbourg; CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR 3572; 67000 Strasbourg France
| |
Collapse
|
219
|
Castañeda-Tamez P, Ramírez-Peris J, Pérez-Velázquez J, Kuttler C, Jalalimanesh A, Saucedo-Mora MÁ, Jiménez-Cortés JG, Maeda T, González Y, Tomás M, Wood TK, García-Contreras R. Pyocyanin Restricts Social Cheating in Pseudomonas aeruginosa. Front Microbiol 2018; 9:1348. [PMID: 29997585 PMCID: PMC6030374 DOI: 10.3389/fmicb.2018.01348] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 06/04/2018] [Indexed: 01/23/2023] Open
Abstract
Quorum sensing (QS) in Pseudomonas aeruginosa coordinates the expression of virulence factors, such as exoproteases and siderophores, that are public goods utilized by the whole population of bacteria, regardless of whether they invested or not in their production. These public goods can be used by QS defective mutants for growth, and since these mutants do not contribute to public goods production, they are considered social cheaters. Pyocyanin is a phenazine that is a toxic, QS-controlled metabolite produced by P. aeruginosa. It is a redox-active compound and promotes the generation of reactive oxygen species; it also possesses antibacterial properties and increases fitness in competition with other bacterial species. Since QS-deficient individuals are less able to tolerate oxidative stress, we hypothesized that the pyocyanin produced by the wild-type population could promote selection of functional QS systems in this bacterium. Here, we demonstrate, using competition experiments and mathematical models, that, indeed, pyocyanin increases the fitness of the cooperative QS-proficient individuals and restricts the appearance of social cheaters. In addition, we also show that pyocyanin is able to select QS in other bacteria such as Acinetobacter baumannii.
Collapse
Affiliation(s)
- Paulina Castañeda-Tamez
- Department of Microbiology and Parasitology, Faculty of Medicine, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Jimena Ramírez-Peris
- Department of Microbiology and Parasitology, Faculty of Medicine, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Mexico City, Mexico
| | - Judith Pérez-Velázquez
- Institute of Computational Biology, Helmholtz Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), Neuherberg, Germany
- Zentrum Mathematik, Technische Universität München, Munich, Germany
| | | | - Ammar Jalalimanesh
- Zentrum Mathematik, Technische Universität München, Munich, Germany
- Iranian Research Institute for Information Science and Technology (IRANDOC), Tehran, Iran
| | - Miguel Á. Saucedo-Mora
- Department of Microbiology and Parasitology, Faculty of Medicine, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - J. Guillermo Jiménez-Cortés
- Department of Microbiology and Parasitology, Faculty of Medicine, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Toshinari Maeda
- Department of Biological Functions Engineering, Kyushu Institute of Technology, Kitakyushu, Japan
| | - Yael González
- Department of Microbiology and Parasitology, Faculty of Medicine, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - María Tomás
- Department of Microbiology, Instituto de Investigación Biomédica de A Coruña, Complexo Hospitalario Universitario de A Coruña, SERGAS, Universidade da Coruña, A Coruña, Spain
| | - Thomas K. Wood
- Department of Chemical Engineering, The Pennsylvania State University, State College, PA, United States
| | - Rodolfo García-Contreras
- Department of Microbiology and Parasitology, Faculty of Medicine, Universidad Nacional Autónoma de México, Mexico City, Mexico
| |
Collapse
|
220
|
Abstract
PURPOSE OF REVIEW In this article, we review current and emerging approaches to biomarker discovery to facilitate early diagnosis of cancer therapy-associated cardiovascular toxicity. RECENT FINDINGS Although small studies have demonstrated an association between established biomarkers of cardiac injury (troponins and brain natriuretic peptide) and acute or subacute cardiotoxicity, there is insufficient evidence to support their use in routine clinical care. Preclinical studies to define the molecular mechanisms of cardiotoxicity, as well as the use of unbiased "omics" techniques in small patient cohorts, have yielded promising candidate biomarkers that have the potential to enrich current risk stratification algorithms. New biomarkers of cardiotoxicity have the potential to improve patient outcomes in cardio-oncology. Further studies are needed to assess the clinical relevance of molecular mechanisms described in animal models. Similarly, findings from "omics" platforms require validation in large patient cohorts before they can be incorporated into everyday practice.
Collapse
|
221
|
Abstract
The role of bacteriolysis in the pathophysiology of microbial infections dates back to 1893 when Buchner and Pfeiffer reported for the first time the lysis of bacteria by immune serum and related this phenomenon to the immune response. Later on, basic anti-microbial peptides and certain beta-lactam antibiotics have been shown not only to kill microorganisms but also to induce bacteriolysis and the release of cell-wall components. In 2009, a novel paradigm was offered suggesting that the main cause of death in sepsis is due to the exclusive release from activated human phagocytic neutrophils (PMNs) traps adhering upon endothelial cells of highly toxic nuclear histone. Since activated PMNs also release a plethora of pro-inflammatory agonists, it stands to reason that these may act in synergy with histone to damage cells. Since certain beta lactam antibiotics may induce bacteriolysis, it is questioned whether these may aggravate sepsis patient's condition. Enigmatically, since the term bacteriolysis and its possible involvement in sepsis is hardly ever mentioned in the extensive clinical articles and reviews dealing with critical care, we hereby aim to refresh the concept of bacteriolysis and its possible role in the pathogenesis of post infectious sequelae.
Collapse
Affiliation(s)
- Isaac Ginsburg
- a Institute for Dental sciences, The Hebrew University Hadassah Faculty of Dental Medicine, Ein Kerem Campus , Jerusalem , Israel
| | - Erez Koren
- b Teva Pharmaceutical Industries Ltd. , Kfar Saba , Israel
| |
Collapse
|
222
|
Grist JJ, Marro BS, Skinner DD, Syage AR, Worne C, Doty DJ, Fujinami RS, Lane TE. Induced CNS expression of CXCL1 augments neurologic disease in a murine model of multiple sclerosis via enhanced neutrophil recruitment. Eur J Immunol 2018; 48:1199-1210. [PMID: 29697856 PMCID: PMC6033633 DOI: 10.1002/eji.201747442] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 02/17/2018] [Accepted: 04/20/2018] [Indexed: 01/12/2023]
Abstract
Increasing evidence points to an important role for neutrophils in participating in the pathogenesis of the human demyelinating disease MS and the animal model EAE. Therefore, a better understanding of the signals controlling migration of neutrophils as well as evaluating the role of these cells in demyelination is important to define cellular components that contribute to disease in MS patients. In this study, we examined the functional role of the chemokine CXCL1 in contributing to neuroinflammation and demyelination in EAE. Using transgenic mice in which expression of CXCL1 is under the control of a tetracycline‐inducible promoter active within glial fibrillary acidic protein‐positive cells, we have shown that sustained CXCL1 expression within the CNS increased the severity of clinical and histologic disease that was independent of an increase in the frequency of encephalitogenic Th1 and Th17 cells. Rather, disease was associated with enhanced recruitment of CD11b+Ly6G+ neutrophils into the spinal cord. Targeting neutrophils resulted in a reduction in demyelination arguing for a role for these cells in myelin damage. Collectively, these findings emphasize that CXCL1‐mediated attraction of neutrophils into the CNS augments demyelination suggesting that this signaling pathway may offer new targets for therapeutic intervention.
Collapse
Affiliation(s)
- Jonathan J Grist
- Department of Pathology, Division of Microbiology and Immunology, University of Utah, School of Medicine, Salt Lake City, UT, USA
| | - Brett S Marro
- Department of Molecular Biology and Biochemistry, University of California, Irvine, CA, USA
| | - Dominic D Skinner
- Department of Pathology, Division of Microbiology and Immunology, University of Utah, School of Medicine, Salt Lake City, UT, USA
| | - Amber R Syage
- Department of Pathology, Division of Microbiology and Immunology, University of Utah, School of Medicine, Salt Lake City, UT, USA
| | - Colleen Worne
- Department of Pathology, Division of Microbiology and Immunology, University of Utah, School of Medicine, Salt Lake City, UT, USA
| | - Daniel J Doty
- Department of Pathology, Division of Microbiology and Immunology, University of Utah, School of Medicine, Salt Lake City, UT, USA
| | - Robert S Fujinami
- Department of Pathology, Division of Microbiology and Immunology, University of Utah, School of Medicine, Salt Lake City, UT, USA.,Immunology, Inflammation, and Infectious Disease Initiative, University of Utah, UT, USA
| | - Thomas E Lane
- Department of Pathology, Division of Microbiology and Immunology, University of Utah, School of Medicine, Salt Lake City, UT, USA.,Immunology, Inflammation, and Infectious Disease Initiative, University of Utah, UT, USA
| |
Collapse
|
223
|
Khan AA, Alsahli MA, Rahmani AH. Myeloperoxidase as an Active Disease Biomarker: Recent Biochemical and Pathological Perspectives. Med Sci (Basel) 2018; 6:medsci6020033. [PMID: 29669993 PMCID: PMC6024665 DOI: 10.3390/medsci6020033] [Citation(s) in RCA: 132] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 04/04/2018] [Accepted: 04/11/2018] [Indexed: 12/15/2022] Open
Abstract
Myeloperoxidase (MPO) belongs to the family of heme-containing peroxidases, produced mostly from polymorphonuclear neutrophils. The active enzyme (150 kDa) is the product of the MPO gene located on long arm of chromosome 17. The primary gene product undergoes several modifications, such as the removal of introns and signal peptides, and leads to the formation of enzymatically inactive glycosylated apoproMPO which complexes with chaperons, producing inactive proMPO by the insertion of a heme moiety. The active enzyme is a homodimer of heavy and light chain protomers. This enzyme is released into the extracellular fluid after oxidative stress and different inflammatory responses. Myeloperoxidase is the only type of peroxidase that uses H₂O₂ to oxidize several halides and pseudohalides to form different hypohalous acids. So, the antibacterial activities of MPO involve the production of reactive oxygen and reactive nitrogen species. Controlled MPO release at the site of infection is of prime importance for its efficient activities. Any uncontrolled degranulation exaggerates the inflammation and can also lead to tissue damage even in absence of inflammation. Several types of tissue injuries and the pathogenesis of several other major chronic diseases such as rheumatoid arthritis, cardiovascular diseases, liver diseases, diabetes, and cancer have been reported to be linked with MPO-derived oxidants. Thus, the enhanced level of MPO activity is one of the best diagnostic tools of inflammatory and oxidative stress biomarkers among these commonly-occurring diseases.
Collapse
Affiliation(s)
- Amjad A Khan
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, AlQassim, P.O. Box 6699, Buraidah 51452, Saudi Arabia.
| | - Mohammed A Alsahli
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, AlQassim, P.O. Box 6699, Buraidah 51452, Saudi Arabia.
| | - Arshad H Rahmani
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, AlQassim, P.O. Box 6699, Buraidah 51452, Saudi Arabia.
| |
Collapse
|
224
|
Gupta PV, Nirwane AM, Nagarsenker MS. Inhalable Levofloxacin Liposomes Complemented with Lysozyme for Treatment of Pulmonary Infection in Rats: Effective Antimicrobial and Antibiofilm Strategy. AAPS PharmSciTech 2018; 19:1454-1467. [PMID: 29464594 DOI: 10.1208/s12249-017-0945-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 12/21/2017] [Indexed: 12/16/2022] Open
Abstract
Treatment of bacterial infections becomes increasingly complicated due to increasing bacterial resistance and difficulty in developing new antimicrobial agents. Emphasis should be laid on improvising the existing treatment modalities. We studied the improved antimicrobial and antibiofilm activity of levofloxacin (LFX) and lysozyme (LYS) in microbiological studies. LFX at sub-minimum inhibitory concentration with LYS eradicated > 85% of preformed biofilm. LFX was actively loaded into the liposomes using pH gradient method and was spray-dried with LYS solution. Percent entrapment of LFX in liposome was > 80% and prolonged cumulative release of 85% LFX at the end of 12 h. In vitro lung deposition study and solid-state characterization for spray dried LFX liposome in combination with LYS (LFX liposome-LYS) was performed. Co-spray dried product had mass median aerodynamic diameter ranging < 5 μm. In pharmacodynamic study, Staphylococcus aureus infected rats were treated with LFX liposome-LYS. Lungs, bronchoalveolar lavage fluid (BALF), and nasal fluid were evaluated for microbial burden. Expression of cytokine levels in BALF and serum were also studied by ELISA. In addition, mRNA expression for lung inflammatory mediators and lung myeloperoxidase activity were carried out. Further, lungs and histological changes were observed grossly. Untreated infected rat lungs demonstrated higher mRNA expression for inflammatory markers, cytokine levels, and microbial load compared to vehicle control. Conversely, LFX liposome-LYS significantly abated these adverse repercussions. Histology findings were also in agreement of above. Acute toxicity study revealed safeness of LFX liposome-LYS. Our findings confirm LFX liposome-LYS exhibited prolonged, improved antibiofilm and antimicrobial efficacy in treating S. aureus infection.
Collapse
|
225
|
Vanhamme L, Zouaoui Boudjeltia K, Van Antwerpen P, Delporte C. The other myeloperoxidase: Emerging functions. Arch Biochem Biophys 2018; 649:1-14. [PMID: 29614255 DOI: 10.1016/j.abb.2018.03.037] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 03/07/2018] [Accepted: 03/30/2018] [Indexed: 12/20/2022]
Abstract
Myeloperoxidase (MPO) is a member of the mammalian peroxidase family. It is mainly expressed in neutrophils, monocytes and macrophages. As a catalyzer of reactive oxidative species and radical species formation, it contributes to neutrophil bactericidal activity. Nevertheless MPO invalidation does not seem to have major health consequences in affected individuals. This suggests that MPO might have alternative functions supporting its conservation during evolution. We will review the available data supporting these non-canonical functions in terms of tissue specific expression, function and enzymatic activity. Thus, we discuss its cell type specific expression. We review in between others its roles in angiogenesis, endothelial (dys-) function, immune reaction, and inflammation. We summarize its pathological actions in clinical conditions such as cardiovascular disease and cancer.
Collapse
Affiliation(s)
- Luc Vanhamme
- Laboratory of Molecular Biology of Inflammation, IBMM, Faculty of Sciences, Université Libre de Bruxelles, Gosselies, Belgium; Laboratory of Experimental Medicine (ULB 222 Unit), CHU de Charleroi, A. Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul, Belgium.
| | - Karim Zouaoui Boudjeltia
- Laboratory of Experimental Medicine (ULB 222 Unit), CHU de Charleroi, A. Vésale Hospital, Université Libre de Bruxelles, Montigny-le-Tilleul, Belgium
| | - Pierre Van Antwerpen
- Pharmacognosy, Bioanalysis and Drug Discovery Unit, RD3, and Analytical Platform of the Faculty of Pharmacy, Faculty of Pharmacy, Université Libre de Bruxelles, Brussels, Belgium
| | - Cédric Delporte
- Pharmacognosy, Bioanalysis and Drug Discovery Unit, RD3, and Analytical Platform of the Faculty of Pharmacy, Faculty of Pharmacy, Université Libre de Bruxelles, Brussels, Belgium.
| |
Collapse
|
226
|
Pravalika K, Sarmah D, Kaur H, Wanve M, Saraf J, Kalia K, Borah A, Yavagal DR, Dave KR, Bhattacharya P. Myeloperoxidase and Neurological Disorder: A Crosstalk. ACS Chem Neurosci 2018; 9:421-430. [PMID: 29351721 DOI: 10.1021/acschemneuro.7b00462] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Myeloperoxidase (MPO) is a protein present in azurophilic granules, macrophages, and neutrophils that are released into extracellular fluid (ECF) during inflammation. MPO releases hypochlorous acid (HOCl) and other chlorinated species. It is derived from hydrogen peroxide (H2O2) showing response during inflammatory conditions and plays a role in the immune defense against pathogens. MPO may show unwanted effects by indirectly increasing the formation of reactive nitrogen species (RNS), reactive oxygen species (ROS), and tumor necrosis factor alpha (TNF-α) leading to inflammation and oxidative stress. As neuroinflammation is one of the inevitable biological components among most of neurological disorders, MPO and its receptor may be explored as candidates for future clinical interventions. The purpose of this review is to provide an overview of the pathophysiological characteristics of MPO and further explore the possibilities to target it for clinical use. Targeting MPO is promising and may open an avenue to act as a biomarker for diagnosis with defined risk stratification in patients with various neurological disorders.
Collapse
Affiliation(s)
- Kanta Pravalika
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad Gandhinagar, 382 355 Gujarat, India
| | - Deepaneeta Sarmah
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad Gandhinagar, 382 355 Gujarat, India
| | - Harpreet Kaur
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad Gandhinagar, 382 355 Gujarat, India
| | - Madhuri Wanve
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad Gandhinagar, 382 355 Gujarat, India
| | - Jackson Saraf
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad Gandhinagar, 382 355 Gujarat, India
| | - Kiran Kalia
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad Gandhinagar, 382 355 Gujarat, India
| | - Anupom Borah
- Cellular and Molecular Neurobiology Laboratory, Department of Life Science and Bioinformatics, Assam University, Silchar, 788 011 Assam, India
| | - Dileep R Yavagal
- Department of Neurology and Neurosurgery, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
| | - Kunjan R Dave
- Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
| | - Pallab Bhattacharya
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad Gandhinagar, 382 355 Gujarat, India
| |
Collapse
|
227
|
Chai Y, Cong B, Yu S, Liu Y, Man X, Wang L, Zhu Q. Effect of a LECT2 on the immune response of peritoneal lecukocytes against Vibrio anguillarum in roughskin sculpin. FISH & SHELLFISH IMMUNOLOGY 2018; 74:620-626. [PMID: 29331349 DOI: 10.1016/j.fsi.2017.12.069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Revised: 12/28/2017] [Accepted: 12/31/2017] [Indexed: 06/07/2023]
Abstract
Leukocyte cell-derived chemotaxin 2 (LECT2) is a multi-functional protein that is mainly synthesized by the liver. However, its role in roughskin scalping is less known. Here, we cloned a leukocyte cell-derived chemotaxin 2 (TfLECT2) genes in the liver of roughskin scalping, Trachidermus fasciatus, and studied its possible role involved in the immune response against Vibrio anguillarum (V. anguillarum) of peritoneal lecukocytes under in vivo conditions. The cDNA sequence of TfLECT2 is 566 bp in size. Its deduced amino acid (aa) sequence comprises 151 residues, of which the first 16 residues form a putative signal peptide and 101 residues compose a typical peptidase M23 domain in the C-terminal region. The domain structure is conserved in all LECT2 proteins, which suggests a close phylogenetic relationship between TfLECT2 and LECT2 in other fish species. Real-time quantitative PCR analysis revealed that TfLECT2 gene expression was dramatically increased in liver after V. anguillarum stimulation. Subsequently, TfLECT2 was prokaryotic expressed and purified to prepare anti-TfLECT2 antibody. After V. anguillarum challenge, leukocytes recruitment and LECT2 levels in peritoneal exudates were increased, and positively correlated with each other. Moreover, recombinant TfLECT2 administration significantly improved immune responses after infection, principally in stimulating the recruitment, phagocytosis and respiratory burst of leukocytes at the site of infection; however, anti-TfLECT2 treatment neutralized these abilities. Therefore, TfLECT2 may trigger the early immune events of peritoneal leukocytes and it will be useful to induce innate immune response of fish.
Collapse
Affiliation(s)
- Yingmei Chai
- Marine College, Shandong University (Weihai), Weihai 264209, PR China.
| | - Bailin Cong
- The First Institute of Oceanography, Marine Ecological Center, State Oceanic Administration, Qingdao, 266061, PR China
| | - Shanshan Yu
- Marine College, Shandong University (Weihai), Weihai 264209, PR China
| | - Yingying Liu
- Marine College, Shandong University (Weihai), Weihai 264209, PR China
| | - Xin Man
- Marine College, Shandong University (Weihai), Weihai 264209, PR China
| | - Lujie Wang
- Marine College, Shandong University (Weihai), Weihai 264209, PR China
| | - Qian Zhu
- Marine College, Shandong University (Weihai), Weihai 264209, PR China.
| |
Collapse
|
228
|
Zeng WJ, Tan Z, Lai XF, Xu YN, Mai CL, Zhang J, Lin ZJ, Liu XG, Sun SL, Zhou LJ. Topical delivery of l-theanine ameliorates TPA-induced acute skin inflammation via downregulating endothelial PECAM-1 and neutrophil infiltration and activation. Chem Biol Interact 2018; 284:69-79. [PMID: 29458014 DOI: 10.1016/j.cbi.2018.02.019] [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] [Received: 10/11/2017] [Revised: 12/27/2017] [Accepted: 02/13/2018] [Indexed: 02/08/2023]
Abstract
l-theanine, the most abundant free amino acid in tea, has been documented to possess many different bioactive properties through oral or intragastrical delivery. However, little is known about the effect of topical delivery of l-theanine on acute inflammation. In the present study, by using 12-O-tetradecanoylphorbol-13-acetate (TPA, 2.5 μg/ear)-induced ear edema model in mice, we first found that single-dose local pretreatment of l-theanine 30 min before TPA time- and dose-dependently suppressed the increases in both skin thickness and weight. Subsequently l-theanine ameliorated TPA-induced erythema, vascular permeability increase, epidermal and dermal hyperplasia, neutrophil infiltration and activation via downregulating the expression of PECAM-1 (a platelet endothelial adhesion molecule-1) in blood vessels and the production of pro-inflammatory cytokines IL-1β, TNF-α, and mediator cyclooxygenase-2 (COX-2), which is mainly expressed in neutrophils. It highlighted the potential of l-theanine as a locally administrable therapeutic agent for acute cutaneous inflammation.
Collapse
Affiliation(s)
- Wei-Jie Zeng
- Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Zhi Tan
- Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Xing-Fei Lai
- Tea Research Institute, Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of Tea Plant Resources Innovation & Utilization, Guangdong Academy of Agricultural Sciences, Dafeng Road 6th, Guangzhou, 510640, China
| | - Ya-Nan Xu
- Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Chun-Lin Mai
- Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Jun Zhang
- Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Zhen-Jia Lin
- Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Xian-Guo Liu
- Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Shi-Li Sun
- Tea Research Institute, Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of Tea Plant Resources Innovation & Utilization, Guangdong Academy of Agricultural Sciences, Dafeng Road 6th, Guangzhou, 510640, China.
| | - Li-Jun Zhou
- Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China.
| |
Collapse
|
229
|
Shah Idil A, Donaldson N. The use of tungsten as a chronically implanted material. J Neural Eng 2018; 15:021006. [DOI: 10.1088/1741-2552/aaa502] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
230
|
Zhang R, Song B, Yuan J. Bioanalytical methods for hypochlorous acid detection: Recent advances and challenges. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2017.11.015] [Citation(s) in RCA: 132] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
231
|
Acute Limb Ischemia-Much More Than Just a Lack of Oxygen. Int J Mol Sci 2018; 19:ijms19020374. [PMID: 29373539 PMCID: PMC5855596 DOI: 10.3390/ijms19020374] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 01/17/2018] [Accepted: 01/23/2018] [Indexed: 12/12/2022] Open
Abstract
Acute ischemia of an extremity occurs in several stages, a lack of oxygen being the primary contributor of the event. Although underlying patho-mechanisms are similar, it is important to determine whether it is an acute or chronic event. Healthy tissue does not contain enlarged collaterals, which are formed in chronically malperfused tissue and can maintain a minimum supply despite occlusion. The underlying processes for enhanced collateral blood flow are sprouting vessels from pre-existing vessels (via angiogenesis) and a lumen extension of arterioles (via arteriogenesis). While disturbed flow patterns with associated local low shear stress upregulate angiogenesis promoting genes, elevated shear stress may trigger arteriogenesis due to increased blood volume. In case of an acute ischemia, especially during the reperfusion phase, fluid transfer occurs into the tissue while the vascular bed is simultaneously reduced and no longer reacts to vaso-relaxing factors such as nitric oxide. This process results in an exacerbative cycle, in which increased peripheral resistance leads to an additional lack of oxygen. This whole process is accompanied by an inundation of inflammatory cells, which amplify the inflammatory response by cytokine release. However, an extremity is an individual-specific composition of different tissues, so these processes may vary dramatically between patients. The image is more uniform when broken down to the single cell stage. Because each cell is dependent on energy produced from aerobic respiration, an event of acute hypoxia can be a life-threatening situation. Aerobic processes responsible for yielding adenosine triphosphate (ATP), such as the electron transport chain and oxidative phosphorylation in the mitochondria, suffer first, thus disrupting the integrity of cellular respiration. One consequence of this is irreparable damage of the cell membrane due to an imbalance of electrolytes. The eventual increase in net fluid influx associated with a decrease in intracellular pH is considered an end-stage event. Due to the lack of ATP, individual cell organelles can no longer sustain their activity, thus initiating the cascade pathways of apoptosis via the release of cytokines such as the BCL2 associated X protein (BAX). As ischemia may lead to direct necrosis, inflammatory processes are further aggravated. In the case of reperfusion, the flow of nascent oxygen will cause additional damage to the cell, further initiating apoptosis in additional surrounding cells. In particular, free oxygen radicals are formed, causing severe damage to cell membranes and desoxyribonucleic acid (DNA). However, the increased tissue stress caused by this process may be transient, as radical scavengers may attenuate the damage. Taking the above into final consideration, it is clearly elucidated that acute ischemia and subsequent reperfusion is a process that leads to acute tissue damage combined with end-organ loss of function, a condition that is difficult to counteract.
Collapse
|
232
|
Mukherjee SP, Gliga AR, Lazzaretto B, Brandner B, Fielden M, Vogt C, Newman L, Rodrigues AF, Shao W, Fournier PM, Toprak MS, Star A, Kostarelos K, Bhattacharya K, Fadeel B. Graphene oxide is degraded by neutrophils and the degradation products are non-genotoxic. NANOSCALE 2018; 10:1180-1188. [PMID: 29271441 DOI: 10.1039/c7nr03552g] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Neutrophils were previously shown to digest oxidized carbon nanotubes through a myeloperoxidase (MPO)-dependent mechanism, and graphene oxide (GO) was found to undergo degradation when incubated with purified MPO, but there are no studies to date showing degradation of GO by neutrophils. Here we produced endotoxin-free GO by a modified Hummers' method and asked whether primary human neutrophils stimulated to produce neutrophil extracellular traps or activated to undergo degranulation are capable of digesting GO. Biodegradation was assessed using a range of techniques including Raman spectroscopy, transmission electron microscopy, atomic force microscopy, and mass spectrometry. GO sheets of differing lateral dimensions were effectively degraded by neutrophils. As the degradation products could have toxicological implications, we also evaluated the impact of degraded GO on the bronchial epithelial cell line BEAS-2B. MPO-degraded GO was found to be non-cytotoxic and did not elicit any DNA damage. Taken together, these studies have shown that neutrophils can digest GO and that the biodegraded GO is non-toxic for human lung cells.
Collapse
Affiliation(s)
- Sourav P Mukherjee
- Nanosafety & Nanomedicine Laboratory, Division of Molecular Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
233
|
Wei P, Yuan W, Xue F, Zhou W, Li R, Zhang D, Yi T. Deformylation reaction-based probe for in vivo imaging of HOCl. Chem Sci 2018; 9:495-501. [PMID: 29619205 PMCID: PMC5868080 DOI: 10.1039/c7sc03784h] [Citation(s) in RCA: 125] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 11/01/2017] [Indexed: 12/18/2022] Open
Abstract
The detection of hypochlorous acid (HOCl) in vivo is vitally important because the local concentration of HOCl is highly correlated with some diseases such as atherosclerosis and rheumatoid arthritis. However, in vivo detection of HOCl remains a challenge due to the lack of a suitable probe. We report here a near-infrared (NIR) emissive "turn-on" probe (FDOCl-1) based on a methylene blue derivative, which can quickly detect HOCl via a newly found deformylation mechanism. FDOCl-1 displays remarkable selectivity and sensitivity towards HOCl. The dramatic changes in colour and NIR emission were used to detect HOCl in vitro and in vivo in a mouse arthritis model.
Collapse
Affiliation(s)
- Peng Wei
- Department of Chemistry , Collaborative Innovation Center of Chemistry for Energy Materials , Fudan University , 220 Handan Road , Shanghai 200433 , China .
| | - Wei Yuan
- Department of Chemistry , Collaborative Innovation Center of Chemistry for Energy Materials , Fudan University , 220 Handan Road , Shanghai 200433 , China .
| | - Fengfeng Xue
- Department of Chemistry , Collaborative Innovation Center of Chemistry for Energy Materials , Fudan University , 220 Handan Road , Shanghai 200433 , China .
| | - Wei Zhou
- Department of Chemistry , Collaborative Innovation Center of Chemistry for Energy Materials , Fudan University , 220 Handan Road , Shanghai 200433 , China .
| | - Ruohan Li
- Department of Chemistry , Collaborative Innovation Center of Chemistry for Energy Materials , Fudan University , 220 Handan Road , Shanghai 200433 , China .
| | - Datong Zhang
- Shandong Provincial Key Laboratory of Fine Chemicals , School of Chemistry and Pharmaceutical Engineering , Qilu University of Technology , Jinan 250353 , Shandong , China
| | - Tao Yi
- Department of Chemistry , Collaborative Innovation Center of Chemistry for Energy Materials , Fudan University , 220 Handan Road , Shanghai 200433 , China .
| |
Collapse
|
234
|
Santos GB, Ribeiro AC, Lima SN, Trostchansky A, Cerdeira CD, Brigagão MR. Nitroxide Tempol down-regulates kinase activities associated with NADPH oxidase function in phagocytic cells and potentially decreases their fungicidal response. Chem Biol Interact 2018; 279:203-209. [DOI: 10.1016/j.cbi.2017.11.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 11/02/2017] [Accepted: 11/23/2017] [Indexed: 11/29/2022]
|
235
|
Law SM, Gray RD. Neutrophil extracellular traps and the dysfunctional innate immune response of cystic fibrosis lung disease: a review. J Inflamm (Lond) 2017; 14:29. [PMID: 29299029 PMCID: PMC5745605 DOI: 10.1186/s12950-017-0176-1] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 12/14/2017] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Cystic Fibrosis (CF) is a devastating genetic disease characterised primarily by unrelenting lung inflammation and infection resulting in premature death and significant morbidity. Neutrophil Extracellular Traps (NETs) are possibly key to inflammation in the disease. This review aims to draw together existing research investigating NETs in the context of a dysfunctional innate immune system in CF. MAIN BODY NETs have a limited anti-microbial role in CF and studies have shown they are present in higher numbers in CF airways and their protein constituents correlate with lung function decline. Innate immune system cells express CFTR and myeloid-specific CFTR KO mice have greater neutrophil recruitment and higher pro-inflammatory cytokine production to both sterile and bacterial inflammatory challenges. CFTR KO neutrophils have impaired anti-microbial capacity and intrinsic abnormalities in the pH of their cytoplasm, abnormal protein trafficking, increased neutrophil elastase and myeloperoxidase function, and decreased hypochlorite concentrations in their phagolysosomes. Furthermore, neutrophils from CF patients have less intrinsic apoptosis and may be therefore more likely to make NETs. CFTR KO macrophages have high intraphagolysosomal pH and increased toll-like receptor 4 on their cell surface membranes, which inhibit their anti-microbial capacity and render them hyper-responsive to inflammatory stimuli, respectively. Pharmacological treatments for CF target these intrinsic abnormalities of immune dysfunction. Emerging evidence suggests that the absence of CFTR from neutrophils affects NETosis and the interaction of NETs with macrophages. CONCLUSION Current evidence suggests that NETs contribute to inflammation and lung destruction rather than working effectively in their anti-microbial capacity. Further studies focussing on the pro-inflammatory nature of NET constituents are required to identify the exact mechanistic role of NETs in CF and potential therapeutic interventions.
Collapse
Affiliation(s)
- Sheonagh M. Law
- MRC Centre for Inflammation Research, The Queen’s Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ UK
| | - Robert D. Gray
- MRC Centre for Inflammation Research, The Queen’s Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ UK
| |
Collapse
|
236
|
Rosenfeld MA, Vasilyeva AD, Yurina LV, Bychkova AV. Oxidation of proteins: is it a programmed process? Free Radic Res 2017; 52:14-38. [DOI: 10.1080/10715762.2017.1402305] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Mark A. Rosenfeld
- N. M. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, Russia
| | - Alexandra D. Vasilyeva
- N. M. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, Russia
| | - Lyubov V. Yurina
- N. M. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, Russia
| | - Anna V. Bychkova
- N. M. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, Russia
| |
Collapse
|
237
|
Umeno A, Fukui T, Hashimoto Y, Kataoka M, Hagihara Y, Nagai H, Horie M, Shichiri M, Yoshino K, Yoshida Y. Early diagnosis of type 2 diabetes based on multiple biomarkers and non-invasive indices. J Clin Biochem Nutr 2017; 62:187-194. [PMID: 29610560 PMCID: PMC5874237 DOI: 10.3164/jcbn.17-81] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Accepted: 09/05/2017] [Indexed: 01/23/2023] Open
Abstract
We previously reported that type 2 diabetes risk, early impaired glucose tolerance and insulin resistance can be predicted by measuring the fasting levels of certain biomarkers. Here we validated these findings in randomly recruited healthy volunteers (n = 101) based on biomarker expression as well as various non-invasive indices. Weight, body mass index, waist circumference and visceral fat differed between individuals with impaired fasting glucose and/or impaired glucose tolerance, and normal subjects. Fasting plasma levels of glycated hemoglobin, leptin, pro-insulin and retinol binding protein 4 differed between impaired fasting glucose/impaired glucose tolerance and normal subjects group and between newly detected diabetes and normal subjects group. Insulin resistance was correlated with fasting levels of insulin and leptin/adiponectin (r = 0.913); of insulin, retinol binding protein 4 and leptin/adiponectin (r = 0.903); and of insulin, glycated albumin, and leptin/adiponectin (r = 0.913). Type 2 diabetes risk, early impaired glucose tolerance and insulin resistance were predicted with >98% specificity and sensitivity by comparing fasting glucose levels to the estimated Matsuda Index based on fasting levels of insulin, adiponectin and leptin with or without oxidative lineolate metabolites. Non-invasive indices are slightly correlated with glucose tolerance and insulin resistance but do not increase the accuracy of predicting type 2 diabetes risk.
Collapse
Affiliation(s)
- Aya Umeno
- Health Research Institute, National Institute of Advanced Industrial Science and Technology, 2217-14 Hayashi-cho, Takamatsu, Kagawa 761-0395, Japan
| | - Toshiki Fukui
- Olive Takamatsu Medical Clinic. 649-8 Kankou-cho, Takamatsu, Kagawa 760-0076, Japan
| | - Yoshiko Hashimoto
- Health Research Institute, National Institute of Advanced Industrial Science and Technology, 2217-14 Hayashi-cho, Takamatsu, Kagawa 761-0395, Japan
| | - Masatoshi Kataoka
- Health Research Institute, National Institute of Advanced Industrial Science and Technology, 2217-14 Hayashi-cho, Takamatsu, Kagawa 761-0395, Japan
| | - Yoshihisa Hagihara
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology, 1-8-31 Midorigaoka. Ikeda, Osaka 563-8577, Japan
| | - Hidenori Nagai
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology, 1-8-31 Midorigaoka. Ikeda, Osaka 563-8577, Japan
| | - Masanori Horie
- Health Research Institute, National Institute of Advanced Industrial Science and Technology, 2217-14 Hayashi-cho, Takamatsu, Kagawa 761-0395, Japan
| | - Mototada Shichiri
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology, 1-8-31 Midorigaoka. Ikeda, Osaka 563-8577, Japan
| | - Kohzoh Yoshino
- School of Science and Technology, Kwansei Gakuin University, 2-1 Shigakuen, Sanda, Hyogo 669-1337, Japan
| | - Yasukazu Yoshida
- Health Research Institute, National Institute of Advanced Industrial Science and Technology, 2217-14 Hayashi-cho, Takamatsu, Kagawa 761-0395, Japan
| |
Collapse
|
238
|
Mishra V, Baranwal V, Mishra RK, Sharma S, Paul B, Pandey AC. Immunotoxicological impact and biodistribution assessment of bismuth selenide (Bi 2Se 3) nanoparticles following intratracheal instillation in mice. Sci Rep 2017; 7:18032. [PMID: 29269782 PMCID: PMC5740059 DOI: 10.1038/s41598-017-18126-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 11/22/2017] [Indexed: 12/23/2022] Open
Abstract
Variously synthesized and fabricated Bi2Se3 nanoparticles (NPs) have recently been explored for their theranostic properties. Herein, we investigated the long term in-vivo biodistribution of Bi2Se3 NPs and systematically screened its immune-toxic potential over lungs and other secondary organs post intratracheal instillation. X-Ray CT scan and ICP MS results revealed significant particle localization and retention in lungs monitored for 1 h and 6 months time period respectively. Subsequent particle trafficking was observed in liver, the major reticuloendothelial organ followed by gradual but incomplete renal clearance. Pulmonary cytotoxicity was also found to be associated with persistent neutrophilic and ROS generation at all time points following NP exposure. The inflammatory markers along with ROS generation further promoted oxidative stress and exaggerated additional inflammatory pathways leading to cell death. The present study, therefore, raises serious concern about the hazardous effects of Bi2Se3 NPs and calls for further toxicity assessments through different administration routes and doses as well.
Collapse
Affiliation(s)
- Vani Mishra
- Nanotechnology Application Centre (NAC), University of Allahabad, Allahabad, 211002, India.
- NMR Section, SAIF, CSIR-Central Drug Research Institute (CDRI), Lucknow, 226031, India.
| | - Vikas Baranwal
- Nanotechnology Application Centre (NAC), University of Allahabad, Allahabad, 211002, India
| | - Rohit K Mishra
- Centre for Bioresource Innovation and Research (CBIR), Dept. of Microbiology, Swami Vivekanand University, Sagar, 470228, M.P., India.
- Centre for Medical Diagnostic and Research (CMDR), Motilal Nehru National Institute of Technology (MNNIT), Allahabad, 211004, India.
| | - Shivesh Sharma
- Centre for Medical Diagnostic and Research (CMDR), Motilal Nehru National Institute of Technology (MNNIT), Allahabad, 211004, India
| | - Bholanath Paul
- Immunobiology Division, CSIR-Indian Institute of Toxicology Research (IITR), Lucknow, 226001, India
| | - Avinash C Pandey
- Nanotechnology Application Centre (NAC), University of Allahabad, Allahabad, 211002, India
| |
Collapse
|
239
|
Schindler L, Dickerhof N, Hampton MB, Bernhagen J. Post-translational regulation of macrophage migration inhibitory factor: Basis for functional fine-tuning. Redox Biol 2017; 15:135-142. [PMID: 29247897 PMCID: PMC5975065 DOI: 10.1016/j.redox.2017.11.028] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 11/27/2017] [Accepted: 11/30/2017] [Indexed: 11/29/2022] Open
Abstract
Macrophage migration inhibitory factor (MIF) is a chemokine-like protein and an important mediator in the inflammatory response. Unlike most other pro-inflammatory cytokines, a number of cell types constitutively express MIF and secretion occurs from preformed stores. MIF is an evolutionarily conserved protein that shows a remarkable functional diversity, including specific binding to surface CD74 and chemokine receptors and the presence of two intrinsic tautomerase and oxidoreductase activities. Several studies have shown that MIF is subject to post-translational modification, particularly redox-dependent modification of the catalytic proline and cysteine residues. In this review, we summarize and discuss MIF post-translational modifications and their effects on the biological properties of this protein. We propose that the redox-sensitive residues in MIF will be modified at sites of inflammation and that this will add further depth to the functional diversity of this intriguing cytokine. MIF is a pro-inflammatory cytokine with tautomerase and oxidoreductase activity. MIF is susceptible to post-translational modifications, including redox modification. Oxidants and electrophiles generated at inflammatory sites can modify MIF. The biological consequences of redox modification need detailed characterization.
Collapse
Affiliation(s)
- Lisa Schindler
- Department of Vascular Biology, Institute for Stroke and Dementia Research (ISD), Ludwig-Maximilians-University (LMU), Munich, Germany
| | - Nina Dickerhof
- Centre for Free Radical Research, Department of Pathology, University of Otago, Christchurch, New Zealand
| | - Mark B Hampton
- Centre for Free Radical Research, Department of Pathology, University of Otago, Christchurch, New Zealand
| | - Jürgen Bernhagen
- Department of Vascular Biology, Institute for Stroke and Dementia Research (ISD), Ludwig-Maximilians-University (LMU), Munich, Germany; Munich Cluster for System Neurology (EXC 1010 SyNergy), Munich, Germany.
| |
Collapse
|
240
|
Dickerhof N, Pearson JF, Hoskin TS, Berry LJ, Turner R, Sly PD, Kettle AJ. Oxidative stress in early cystic fibrosis lung disease is exacerbated by airway glutathione deficiency. Free Radic Biol Med 2017; 113:236-243. [PMID: 28982600 DOI: 10.1016/j.freeradbiomed.2017.09.028] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 09/19/2017] [Accepted: 09/28/2017] [Indexed: 01/19/2023]
Abstract
Neutrophil-derived myeloperoxidase (MPO) is recognized as a major source of oxidative stress at the airway surface of a cystic fibrosis (CF) lung where, despite limited evidence, the antioxidant glutathione is widely considered to be low. The aims of this study were to establish whether oxidative stress or glutathione status are associated with bronchiectasis and whether glutathione deficiency is inherently linked to CF or a consequence of oxidative stress. MPO was measured by ELISA in 577 bronchoalveolar lavage samples from 205 clinically-phenotyped infants and children with CF and 58 children without CF (ages 0.2-6.92 years). Reduced glutathione (GSH), oxidized glutathione species (GSSG; glutathione attached to proteins, GSSP; glutathione sulfonamide, GSA) and allantoin, an oxidation product of uric acid, were measured by mass spectrometry. The odds of having bronchiectasis were associated with MPO and GSSP. GSH was low in children with CF irrespective of oxidation. Oxidized glutathione species were significantly elevated in CF children with pulmonary infections compared to uninfected CF children. In non-CF children, infections had no effect on glutathione levels. An inadequate antioxidant response to neutrophil-mediated oxidative stress during infections exists in CF due to an inherent glutathione deficiency. Effective delivery of glutathione and inhibition of MPO may slow the development of bronchiectasis.
Collapse
Affiliation(s)
- Nina Dickerhof
- Centre for Free Radical Research, Department of Pathology, University of Otago Christchurch, Christchurch, New Zealand.
| | - John F Pearson
- Biostatistics and Computational Biology Unit, University of Otago Christchurch, Christchurch, New Zealand
| | - Teagan S Hoskin
- Centre for Free Radical Research, Department of Pathology, University of Otago Christchurch, Christchurch, New Zealand
| | - Luke J Berry
- Telethon Kids Institute, West Perth, Western Australia, Australia
| | - Rufus Turner
- Centre for Free Radical Research, Department of Pathology, University of Otago Christchurch, Christchurch, New Zealand
| | - Peter D Sly
- Child Health Research Centre, University of Queensland, Brisbane, Australia
| | - Anthony J Kettle
- Centre for Free Radical Research, Department of Pathology, University of Otago Christchurch, Christchurch, New Zealand
| | | |
Collapse
|
241
|
Abstract
Vitamin C is an essential micronutrient for humans, with pleiotropic functions related to its ability to donate electrons. It is a potent antioxidant and a cofactor for a family of biosynthetic and gene regulatory enzymes. Vitamin C contributes to immune defense by supporting various cellular functions of both the innate and adaptive immune system. Vitamin C supports epithelial barrier function against pathogens and promotes the oxidant scavenging activity of the skin, thereby potentially protecting against environmental oxidative stress. Vitamin C accumulates in phagocytic cells, such as neutrophils, and can enhance chemotaxis, phagocytosis, generation of reactive oxygen species, and ultimately microbial killing. It is also needed for apoptosis and clearance of the spent neutrophils from sites of infection by macrophages, thereby decreasing necrosis/NETosis and potential tissue damage. The role of vitamin C in lymphocytes is less clear, but it has been shown to enhance differentiation and proliferation of B- and T-cells, likely due to its gene regulating effects. Vitamin C deficiency results in impaired immunity and higher susceptibility to infections. In turn, infections significantly impact on vitamin C levels due to enhanced inflammation and metabolic requirements. Furthermore, supplementation with vitamin C appears to be able to both prevent and treat respiratory and systemic infections. Prophylactic prevention of infection requires dietary vitamin C intakes that provide at least adequate, if not saturating plasma levels (i.e., 100–200 mg/day), which optimize cell and tissue levels. In contrast, treatment of established infections requires significantly higher (gram) doses of the vitamin to compensate for the increased inflammatory response and metabolic demand.
Collapse
|
242
|
Lin H, Gao S, Dai C, Chen Y, Shi J. A Two-Dimensional Biodegradable Niobium Carbide (MXene) for Photothermal Tumor Eradication in NIR-I and NIR-II Biowindows. J Am Chem Soc 2017; 139:16235-16247. [DOI: 10.1021/jacs.7b07818] [Citation(s) in RCA: 741] [Impact Index Per Article: 105.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Han Lin
- State
Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Shanshan Gao
- State
Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Chen Dai
- State
Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
| | - Yu Chen
- State
Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
| | - Jianlin Shi
- State
Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
| |
Collapse
|
243
|
Damgaard D, Bjørn ME, Jensen PØ, Nielsen CH. Reactive oxygen species inhibit catalytic activity of peptidylarginine deiminase. J Enzyme Inhib Med Chem 2017; 32:1203-1208. [PMID: 28933232 PMCID: PMC6021033 DOI: 10.1080/14756366.2017.1368505] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Protein citrullination catalysed by peptidylarginine deiminase (PAD) may play an important pathogenic role in several chronic inflammatory diseases and malignancies. PAD2, PAD4, and citrullinated proteins are found in the synovium of rheumatoid arthritis patients. PAD activity is dependent on calcium and reducing conditions. However, reactive oxygen species (ROS) have been shown to induce citrullination of histones in granulocytes. Here we examine the ability of H2O2 and leukocyte-derived ROS to regulate PAD activity using citrullination of fibrinogen as read-out. H2O2 at concentrations above 40 µM inhibited the catalytic activity of PAD2 and PAD4 in a dose-dependent manner. PMA-stimulated leukocytes citrullinated fibrinogen and this citrullination was markedly enhanced when ROS formation was inhibited by the NADPH oxidase inhibitor diphenyleneiodonium (DPI). In contrast, PAD released from stimulated leukocytes was unaffected by exogenously added H2O2 at concentrations up to 1000 µM. The role of ROS in regulating PAD activity may play an important part in preventing hypercitrullination of proteins.
Collapse
Affiliation(s)
- Dres Damgaard
- a Institute for Inflammation Research, Center for Rheumatology and Spine Diseases, Copenhagen University Hospital, Rigshospitalet , Copenhagen , Denmark.,b Section for Periodontology, Microbiology and Community Dentistry, Department of Odontology, Faculty of Health and Medical Sciences , University of Copenhagen , Copenhagen , Denmark
| | - Mads Emil Bjørn
- a Institute for Inflammation Research, Center for Rheumatology and Spine Diseases, Copenhagen University Hospital, Rigshospitalet , Copenhagen , Denmark.,c Department of Haematology , Roskilde Hospital , Roskilde , Denmark
| | - Peter Østrup Jensen
- a Institute for Inflammation Research, Center for Rheumatology and Spine Diseases, Copenhagen University Hospital, Rigshospitalet , Copenhagen , Denmark.,d Department of Clinical Microbiology , Copenhagen University Hospital, Rigshospitalet , Copenhagen , Denmark
| | - Claus Henrik Nielsen
- a Institute for Inflammation Research, Center for Rheumatology and Spine Diseases, Copenhagen University Hospital, Rigshospitalet , Copenhagen , Denmark.,b Section for Periodontology, Microbiology and Community Dentistry, Department of Odontology, Faculty of Health and Medical Sciences , University of Copenhagen , Copenhagen , Denmark
| |
Collapse
|
244
|
Park YJ, Kim HS, Lee HY, Hwang JS, Bae YS. A novel antimicrobial peptide isolated from centipede Scolopendra subspinipes mutilans stimulates neutrophil activity through formyl peptide receptor 2. Biochem Biophys Res Commun 2017; 494:352-357. [PMID: 28988115 DOI: 10.1016/j.bbrc.2017.10.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Accepted: 10/04/2017] [Indexed: 12/30/2022]
Abstract
In this study, we identified scolopendrasin X, a novel antimicrobial peptide (AMP), from centipede Scolopendra subspinipes mutilans. Scolopendrasin X strongly stimulated mouse neutrophils, resulting in intracellular calcium increase, chemotactic migration through pertussis toxin-sensitive G-protein and phospholipase C pathway, and increased superoxide anion production in neutrophils. Target receptor for scolopendrasin X, formyl peptide receptor (FPR)2 mediated scolopendrasin X-induced neutrophil activation. Moreover, scolopendrasin X significantly blocked inflammatory cytokine production induced by lipopolysaccharide in mouse neutrophils. Taken together, our results suggest that the novel AMP scolopendrasin X can be used as a material to regulate neutrophil activity through FPR2.
Collapse
Affiliation(s)
- Yoo Jung Park
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hyung Sik Kim
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ha Young Lee
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jae Sam Hwang
- Department of Agricultural Biology, National Academy of Agricultural Science, RDA, Wanju 55365, Republic of Korea
| | - Yoe-Sik Bae
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea; Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul 06351, Republic of Korea.
| |
Collapse
|
245
|
Gupta PV, Nirwane AM, Belubbi T, Nagarsenker MS. Pulmonary delivery of synergistic combination of fluoroquinolone antibiotic complemented with proteolytic enzyme: A novel antimicrobial and antibiofilm strategy. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017. [DOI: 10.1016/j.nano.2017.06.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
246
|
Bou Saada Y, Zakharova V, Chernyak B, Dib C, Carnac G, Dokudovskaya S, Vassetzky YS. Control of DNA integrity in skeletal muscle under physiological and pathological conditions. Cell Mol Life Sci 2017; 74:3439-3449. [PMID: 28444416 PMCID: PMC11107590 DOI: 10.1007/s00018-017-2530-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 04/03/2017] [Accepted: 04/19/2017] [Indexed: 02/07/2023]
Abstract
Skeletal muscle is a highly oxygen-consuming tissue that ensures body support and movement, as well as nutrient and temperature regulation. DNA damage induced by reactive oxygen species is present in muscles and tends to accumulate with age. Here, we present a summary of data obtained on DNA damage and its implication in muscle homeostasis, myogenic differentiation and neuromuscular disorders. Controlled and transient DNA damage appears to be essential for muscular homeostasis and differentiation while uncontrolled and chronic DNA damage negatively affects muscle health.
Collapse
Affiliation(s)
- Yara Bou Saada
- UMR 8126, CNRS, Univ. Paris-Sud, Université Paris Saclay, Institut de Cancérologie Gustave-Roussy, 94805, Villejuif, France
| | - Vlada Zakharova
- UMR 8126, CNRS, Univ. Paris-Sud, Université Paris Saclay, Institut de Cancérologie Gustave-Roussy, 94805, Villejuif, France
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 117334, Russia
| | - Boris Chernyak
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 117334, Russia
| | - Carla Dib
- UMR 8126, CNRS, Univ. Paris-Sud, Université Paris Saclay, Institut de Cancérologie Gustave-Roussy, 94805, Villejuif, France
| | - Gilles Carnac
- PhyMedExp, INSERM U1046, CNRS UMR 9214, University of Montpellier, 34295, Montpellier Cedex 5, France
| | - Svetlana Dokudovskaya
- UMR 8126, CNRS, Univ. Paris-Sud, Université Paris Saclay, Institut de Cancérologie Gustave-Roussy, 94805, Villejuif, France
| | - Yegor S Vassetzky
- UMR 8126, CNRS, Univ. Paris-Sud, Université Paris Saclay, Institut de Cancérologie Gustave-Roussy, 94805, Villejuif, France.
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 117334, Russia.
- Koltzov Institute of Developmental Biology, Moscow, 117334, Russia.
| |
Collapse
|
247
|
Fu PK, Yang CY, Huang SC, Hung YW, Jeng KC, Huang YP, Chuang H, Huang NC, Li JP, Hsu MH, Chen JK. Evaluation of LPS-Induced Acute Lung Injury Attenuation in Rats by Aminothiazole-Paeonol Derivatives. Molecules 2017; 22:molecules22101605. [PMID: 28946699 PMCID: PMC6151495 DOI: 10.3390/molecules22101605] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 09/20/2017] [Accepted: 09/21/2017] [Indexed: 12/19/2022] Open
Abstract
Paeonol is a key phenolic compound in the root bark of Moutan Cortex Radicis that has been used in traditional Chinese Medicine to ameliorate inflammation. A series of aminothiazole-paeonol derivatives (APDs) were synthesized in this work and subjected to preliminary evaluation in cells followed by verification in animals. Quantification of monocyte chemotactic protein-1 (MCP-1) and interleukin-6 (IL-6) in culture media of LPS-activated A549 cells, a lung epithelial adenocarcinoma cell line, were used to investigate the anti-inflammatory capability of APDs. ALI-bearing rats were employed to verify therapeutic efficacy of APDs according to observations of total cells, protein amounts, MCP-1 and IL-6 in bronchoalveolar lavage fluid (BALF). Histopathological examinations of lung tissues were consequently applied for validation of APDs. Among these compounds, 2-(2-aminothiazol-4-yl)-5-methoxyphenol (4) had the most potent activity, showing comparable inhibition of MCP-1/IL-6 and superior elimination of neutrophil infiltration and protein exudation in lungs compared to others as well as dexamethasone. This study demonstrated a comprehensive strategy to evaluate APDs through integration of cell-based screening and animal-based verification. In order to fulfill unmet needs of treating acute lung injury (ALI) and acute respiratory distress syndrome (ARDS), APDs introduced in this work could be promising lead compounds to develop high potent anti-inflammation agents.
Collapse
Affiliation(s)
- Pin-Kuei Fu
- Department of Critical Care Medicine, Taichung Veterans General Hospital, Taichung 40705, Taiwan.
- Department of Biotechnology, Hungkuang University, Taichung 43302, Taiwan.
- School of Chinese Medicine, China Medical University, Taichung 40447, Taiwan.
| | - Chi-Yu Yang
- Animal Technology Laboratory, Agriculture Technology Research Institute, Miaoli 35053, Taiwan.
| | - Su-Chin Huang
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 35053, Taiwan.
| | - Yu-Wen Hung
- Animal Technology Laboratory, Agriculture Technology Research Institute, Miaoli 35053, Taiwan.
| | - Kee-Ching Jeng
- Department of Medical Research, Tungs' Taichung MetroHarbor Hospital, Taichung 43503, Taiwan.
| | - Ying-Pei Huang
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Hong Chuang
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Nai-Chun Huang
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 35053, Taiwan.
| | - Jui-Ping Li
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 35053, Taiwan.
| | - Ming-Hua Hsu
- Department of Chemistry, National Changhua University of Education, Changhua County 50007, Taiwan.
| | - Jen-Kun Chen
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 35053, Taiwan.
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 11490, Taiwan.
- School of Dentistry, National Defense Medical Center, Taipei 11490, Taiwan.
| |
Collapse
|
248
|
Murta V, Ferrari C. Peripheral Inflammation and Demyelinating Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 949:263-285. [PMID: 27714694 DOI: 10.1007/978-3-319-40764-7_13] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
In recent decades, several neurodegenerative diseases have been shown to be exacerbated by systemic inflammatory processes. There is a wide range of literature that demonstrates a clear but complex relationship between the central nervous system (CNS) and the immunological system, both under naïve or pathological conditions. In diseased brains, peripheral inflammation can transform "primed" microglia into an "active" state, which can trigger stronger pathological responses. Demyelinating diseases are a group of neurodegenerative diseases characterized by inflammatory lesions associated with demyelination, which in turn induces axonal damage, neurodegeneration, and progressive loss of function. Among them, the most important are multiple sclerosis (MS) and neuromyelitis optica (NMO). In this review, we will analyze the effect of specific peripheral inflammatory stimuli in the progression of demyelinating diseases and discuss their animal models. In most cases, peripheral immune stimuli are exacerbating.
Collapse
Affiliation(s)
- Verónica Murta
- Laboratorio de Neuropatología Molecular, Instituto de Biología Celular y Neurociencias, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Carina Ferrari
- Instituto de Ciencias Básicas y Medicina Experimental, Instituto Universitario del Hospital Italiano, Buenos Aires, Argentina.
| |
Collapse
|
249
|
Zhang XW, Qiu QF, Jiang H, Zhang FL, Liu YL, Amatore C, Huang WH. Real-Time Intracellular Measurements of ROS and RNS in Living Cells with Single Core-Shell Nanowire Electrodes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707187] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Xin-Wei Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education); College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Quan-Fa Qiu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education); College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Hong Jiang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education); College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Fu-Li Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education); College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Yan-Lin Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education); College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Christian Amatore
- State Key Laboratory of Physical Chemistry of Solid Surfaces; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
- PASTEUR; Département de chimie; École normale supérieure; PSL Research University; Sorbonne Universités; UPMC Univ. Paris 06; CNRS; 24 rue Lhomond 75005 Paris France
| | - Wei-Hua Huang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education); College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| |
Collapse
|
250
|
Zhang XW, Qiu QF, Jiang H, Zhang FL, Liu YL, Amatore C, Huang WH. Real-Time Intracellular Measurements of ROS and RNS in Living Cells with Single Core-Shell Nanowire Electrodes. Angew Chem Int Ed Engl 2017; 56:12997-13000. [DOI: 10.1002/anie.201707187] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 08/07/2017] [Indexed: 01/29/2023]
Affiliation(s)
- Xin-Wei Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education); College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Quan-Fa Qiu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education); College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Hong Jiang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education); College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Fu-Li Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education); College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Yan-Lin Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education); College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Christian Amatore
- State Key Laboratory of Physical Chemistry of Solid Surfaces; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
- PASTEUR; Département de chimie; École normale supérieure; PSL Research University; Sorbonne Universités; UPMC Univ. Paris 06; CNRS; 24 rue Lhomond 75005 Paris France
| | - Wei-Hua Huang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education); College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| |
Collapse
|