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Zhang Y, Zhou J, Ji L, Zhang L, Zhao L, Guo Y, Wei H, Lu L. Bacillus subtilis improves antioxidant capacity and optimizes inflammatory state in broilers. Anim Biosci 2024; 37:1041-1052. [PMID: 38419535 PMCID: PMC11065946 DOI: 10.5713/ab.23.0320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 10/09/2023] [Accepted: 01/08/2024] [Indexed: 03/02/2024] Open
Abstract
OBJECTIVE Bacillus subtilis, a kind of probiotic with broad-spectrum antibacterial function, was commonly used in livestock and poultry production. Recent research suggested that Bacillus subtilis may have antioxidant properties and improve immune response. This study aimed to verify the probiotic function of Bacillus subtilis in the production of broiler chickens. METHODS A total of 324 (1-day-old) Arbor Acres broilers were selected and randomly divided into three groups: basal diet group (Ctr Group), basal diet + antibiotic growth promoter group (Ctr + AGP) and basal diet + 0.5% Bacillus subtilis preparation group (Ctr + Bac). The experiment lasted for 42 days. Muscle, serum and liver samples were collected at 42 days for determination. RESULTS The results showed that Bacillus subtilis could decrease malondialdehyde content in the serum and liver (p<0.05) and increase superoxide dismutase 1 mRNA expression (p<0.01) and total superoxide dismutase (p<0.05) in the liver. In addition, compared with AGP supplementation, Bacillus subtilis supplementation increased interleukin-10 (IL-10) and decreased tumor necrosis factor-α and IL-1β level in the serum (p<0.05). At 45 minutes after slaughter Ctr + Bac presented a higher a* value of breast muscle than Ctr Group (p<0.05), while significant change in leg muscle was not identified. Moreover, there was no difference in weight, shear force, cooking loss and drip loss of breast and leg muscle between treatments. CONCLUSION Our results demonstrate that Bacillus subtilis in diet can enhance antioxidant capacity and optimize immune response of broilers.
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Affiliation(s)
- Yu Zhang
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206,
China
- College of Animal Science and Technology, China Agricultural University, Beijing, 100193,
China
| | - Junyan Zhou
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206,
China
| | - Linbao Ji
- College of Animal Science and Technology, China Agricultural University, Beijing, 100193,
China
| | - Lian Zhang
- College of Animal Science and Technology, China Agricultural University, Beijing, 100193,
China
| | - Liying Zhao
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206,
China
| | - Yubing Guo
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206,
China
| | - Haitao Wei
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206,
China
| | - Lin Lu
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206,
China
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Dalberto D, Garcia ALH, De Souza MR, Picinini J, Soares S, De Souza GMS, Chytry P, Dias JF, Salvador M, Da Silva FR, Da Silva J. Dry tobacco leaves: an in vivo and in silico approach to the consequences of occupational exposure. Mutagenesis 2023; 38:120-130. [PMID: 36738258 DOI: 10.1093/mutage/gead003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 01/16/2023] [Indexed: 02/05/2023] Open
Abstract
Exposure of tobacco workers handling dried tobacco leaves has been linked to an increased risk of toxicity and respiratory illness due to the presence of nicotine and other chemicals. This study aimed to evaluate the DNA damage caused by the exposure of tobacco growers during the dry leaf classification process and the relation to cellular mechanisms. A total of 86 individuals participated in the study, divided into a group exposed to dry tobacco (n = 44) and a control group (n = 42). Genotoxicity was evaluated using the alkaline comet assay and lymphocyte micronucleus (MN) assay (CBMN-Cyt), and measurement of telomere length. The levels of oxidative and nitrosative stress were evaluated through the formation of thiobarbituric acid reactive species, and nitric oxide levels, respectively. The inorganic elements were measured in the samples using particle-induced X-ray emission method. The combination of variables was demonstrated through principal component analysis and the interactions were expanded through systems biology. Comet assay, MN, death cells, thiobarbituric acid reactive species, and nitrosative stress showed a significant increase for all exposed groups in relation to the control. Telomere length showed a significant decrease for exposed women and total exposed group in relation to men and control groups, respectively. Bromine (Br) and rubidium (Rb) in the exposed group presented higher levels than control groups. Correlations between nitrate and apoptosis; Br and MN and necrosis; and Rb and telomeres; besides age and DNA damage and death cells were observed. The systems biology analysis demonstrated that tobacco elements can increase the nuclear translocation of NFKB dimers inducing HDAC2 expression, which, associated with BRCA1 protein, can potentially repress transcription of genes that promote DNA repair. Dry tobacco workers exposed to dry leaves and their different agents showed DNA damage by different mechanisms, including redox imbalance.
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Affiliation(s)
- Daiana Dalberto
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Ana L H Garcia
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil.,Laboratory of Genetic Toxicology, PPGSDH, La Salle University (UniLaSalle), Canoas, RS, Brazil
| | - Melissa R De Souza
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Juliana Picinini
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Solange Soares
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Guilherme M S De Souza
- Ion Implantation Laboratory, Institute of Physics, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Paola Chytry
- Ion Implantation Laboratory, Institute of Physics, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Johnny F Dias
- Ion Implantation Laboratory, Institute of Physics, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Mirian Salvador
- Biotechnology Institute, University of Caxias do Sul, Caxias do Sul (UCS), RS, Brazil
| | - Fernanda R Da Silva
- Laboratory of Genetic Toxicology, PPGSDH, La Salle University (UniLaSalle), Canoas, RS, Brazil
| | - Juliana Da Silva
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil.,Laboratory of Genetic Toxicology, PPGSDH, La Salle University (UniLaSalle), Canoas, RS, Brazil
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3
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Dalberto D, Alves J, Garcia ALH, de Souza MR, Abella AP, Thiesen FV, Salvador M, Santos Branco CD, Marroni N, Bona S, Schemitt E, Da Silva FR, Da Silva J. Exposure in the tobacco fields: Genetic damage and oxidative stress in tobacco farmers occupationally exposed during harvest and grading seasons. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2022; 878:503485. [PMID: 35649679 DOI: 10.1016/j.mrgentox.2022.503485] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 04/11/2022] [Accepted: 04/14/2022] [Indexed: 06/15/2023]
Abstract
Agricultural workers engaged in tobacco cultivation are constantly exposed to large amounts of harmful agents, such as pesticides and nicotine. Furthermore, most of the flue-cured tobacco leaves are manually graded exposing workers to agents such as tobacco-specific nitrosamines. This study aimed to evaluate genetic damage and oxidative stress in tobacco farmers occupationally exposed during the harvest and grading seasons. We obtained data on DNA damage detected in Comet assay in blood cells and micronucleus experiment with buccal cells from 241 individuals. The serum cotinine levels and nitrates were also evaluated. The Comet Assay results showed a showed an increased visual score for males and females during harvest time and tobacco grading. An increase of micronucleated and binucleated cells was observed in the grading group compared to the control and harvest groups. The oxidative stress measurements showed a clear increase of thiobarbituric acid reactive substances (TBARS) in tobacco farmers during harvest time, and trolox equivalent antioxidant capacity (TEAC) in individuals during harvest and grading time compared to the controls. Significant increases of the cotinine levels were observed during the harvest and grading period (harvest>grading), and nitrates for the grading period compared to the control. In this study, tobacco farmers presented compromised DNA integrity associated with enhanced oxidative stress levels.
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Affiliation(s)
- Daiana Dalberto
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Jodel Alves
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Ana Letícia Hilário Garcia
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil; Laboratory of Genetic Toxicology, PPGSDH, La Salle University (UniLaSalle), Canoas, RS, Brazil
| | - Melissa Rosa de Souza
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Angélica Pich Abella
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Flávia V Thiesen
- Toxicology Institute, Catholic Pontificial University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Mirian Salvador
- Biotechnology Institute, University of Caxias do Sul, Caxias do Sul (UCS), RS, Brazil
| | | | - Norma Marroni
- PPG Biological Sciences - Physiology and PPG Medicine - Medical Sciences at UFRGS, Porto Alegre, RS, Brazil; Laboratory of Pneumological Sciences and Inflammation - Hospital de Clínicas de Porto Alegre, RS, Brazil
| | - Silvia Bona
- PPG Biological Sciences - Physiology and PPG Medicine - Medical Sciences at UFRGS, Porto Alegre, RS, Brazil
| | - Elizangela Schemitt
- PPG Biological Sciences - Physiology and PPG Medicine - Medical Sciences at UFRGS, Porto Alegre, RS, Brazil
| | | | - Juliana Da Silva
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil; Laboratory of Genetic Toxicology, PPGSDH, La Salle University (UniLaSalle), Canoas, RS, Brazil.
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Assayag M, Goldstein S, Samuni A, Kaufman A, Berkman N. The nitroxide/antioxidant 3-carbamoyl proxyl attenuates disease severity in murine models of severe asthma. Free Radic Biol Med 2021; 177:181-188. [PMID: 34678420 DOI: 10.1016/j.freeradbiomed.2021.10.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/14/2021] [Accepted: 10/18/2021] [Indexed: 11/19/2022]
Abstract
Asthma is characterized by airway inflammation, hyper-responsiveness, symptoms of dyspnea, wheezing and coughing. In most patients, asthma is well controlled using inhaled corticosteroids and bronchodilators. A minority of patients with asthma develop severe disease, which is frequently only partially responsive or even resistant to treatment with corticosteroids. Severe refractory asthma is associated with structural changes in the airways, termed "airway remodeling", and/or with neutrophilic rather than eosinophilic airway inflammation. While oxidative stress plays an important role in the pathophysiology of asthma, cyclic nitroxide stable radicals, which are unique and efficient catalytic antioxidants, effectively protect against oxidative injury. We have demonstrated that the nitroxide 3-carbamoyl proxyl (3-CP) attenuates airway inflammation and hyperresponsiveness in allergic asthma as well as bleomycin-induced fibrosis both using murine models, most probably through modulation of oxidative stress. The present study evaluates the effect of 3-CP on airway inflammation and remodeling using two murine models of severe asthma where mice are sensitized and challenged either by ovalbumin (OVA) or by house dust mite (HDM). 3-CP was orally administered during the entire period of the experiment or during the challenge period alone where its effect was compared to that of dexamethasone. The induced increase by OVA and by HDM of BALf cell counts, airway hyperresponsiveness, fibrosis, transforming growth factor-beta (TGF-β) levels in BALf and protein nitration levels of the lung tissue was significantly reduced by 3-CP. The effect of 3-CP, using two different murine models of severe asthma, is associated at least partially with attenuation of oxidative stress and with TGF-β expression in the lungs. The results of this study suggest a potential use of 3-CP as a novel therapeutic agent in different forms of severe asthma.
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Affiliation(s)
- Miri Assayag
- Institute of Pulmonary Medicine, Hadassah-Hebrew University Medical Center, Jerusalem, 91120, Israel
| | - Sara Goldstein
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel.
| | - Amram Samuni
- Institute of Medical Research, Israel-Canada Medical School, The Hebrew University of Jerusalem, Jerusalem, 91120, Israel
| | - Alexander Kaufman
- Institute of Pulmonary Medicine, Hadassah-Hebrew University Medical Center, Jerusalem, 91120, Israel
| | - Neville Berkman
- Institute of Pulmonary Medicine, Hadassah-Hebrew University Medical Center, Jerusalem, 91120, Israel
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Miranda KM, Ridnour LA, McGinity CL, Bhattacharyya D, Wink DA. Nitric Oxide and Cancer: When to Give and When to Take Away? Inorg Chem 2021; 60:15941-15947. [PMID: 34694129 DOI: 10.1021/acs.inorgchem.1c02434] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The mechanistic roles of nitric oxide (NO) during cancer progression have been important considerations since its discovery as an endogenously generated free radical. Nonetheless, the impacts of this signaling molecule can be seemingly contradictory, being both pro-and antitumorigenic, which complicates the development of cancer treatments based on the modulation of NO fluxes in tumors. At a fundamental level, low levels of NO drive oncogenic pathways, immunosuppression, metastasis, and angiogenesis, while higher levels lead to apoptosis and reduced hypoxia and also sensitize tumors to conventional therapies. However, clinical outcome depends on the type and stage of the tumor as well as the tumor microenvironment. In this Viewpoint, the current understanding of the concentration, spatial, and temporal dependence of responses to NO is correlated with potential treatment and prevention technologies and strategies.
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Affiliation(s)
- Katrina M Miranda
- Department of Chemistry and Biochemistry and the BIO5 Institute, University of Arizona, 1306 East University Boulevard, Tucson, Arizona 85721, United States
| | - Lisa A Ridnour
- Laboratory of Cancer Immunometabolism, National Cancer Institute, Frederick, Maryland 21702, United States
| | - Christopher L McGinity
- Laboratory of Cancer Immunometabolism, National Cancer Institute, Frederick, Maryland 21702, United States
| | - Dana Bhattacharyya
- Laboratory of Cancer Immunometabolism, National Cancer Institute, Frederick, Maryland 21702, United States
| | - David A Wink
- Laboratory of Cancer Immunometabolism, National Cancer Institute, Frederick, Maryland 21702, United States
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6
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Quezada-Maldonado EM, Sánchez-Pérez Y, Chirino YI, García-Cuellar CM. Airborne particulate matter induces oxidative damage, DNA adduct formation and alterations in DNA repair pathways. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 287:117313. [PMID: 34022687 DOI: 10.1016/j.envpol.2021.117313] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 04/12/2021] [Accepted: 05/02/2021] [Indexed: 06/12/2023]
Abstract
Air pollution, which includes particulate matter (PM), is classified in group 1 as a carcinogen to humans by the International Agency for Research in Cancer. Specifically, PM exposure has been associated with lung cancer in patients living in highly polluted cities. The precise mechanism by which PM is linked to cancer has not been completely described, and the genotoxicity induced by PM exposure plays a relevant role in cell damage. In this review, we aimed to analyze the types of DNA damage and alterations in DNA repair pathways induced by PM exposure, from both epidemiological and toxicological studies, to comprehend the contribution of PM exposure to carcinogenesis. Scientific evidence supports that PM exposure mainly causes oxidative stress by reactive oxygen species (ROS) and the formation of DNA adducts, specifically by polycyclic aromatic hydrocarbons (PAH). PM exposure also induces double-strand breaks (DSBs) and deregulates the expression of some proteins in DNA repair pathways, precisely, base and nucleotide excision repairs and homologous repair. Furthermore, specific polymorphisms of DNA repair genes could lead to an adverse response in subjects exposed to PM. Nevertheless, information about the effects of PM on DNA repair pathways is still limited, and it has not been possible to conclude which pathways are the most affected by exposure to PM or if DNA damage is repaired properly. Therefore, deepening the study of genotoxic damage and alterations of DNA repair pathways is needed for a more precise understanding of the carcinogenic mechanism of PM.
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Affiliation(s)
- Ericka Marel Quezada-Maldonado
- Subdirección de Investigación Básica, Instituto Nacional de Cancerología, San Fernando No. 22, Tlalpan, CP 14080, CDMX, Mexico; Programa de Doctorado en Ciencias Biomédicas, Universidad Nacional Autónoma de México, Unidad de Posgrado Edificio B, Primer Piso, Ciudad Universitaria, Coyoacán, CP 04510, Ciudad de México, Mexico
| | - Yesennia Sánchez-Pérez
- Subdirección de Investigación Básica, Instituto Nacional de Cancerología, San Fernando No. 22, Tlalpan, CP 14080, CDMX, Mexico
| | - Yolanda I Chirino
- Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Los Reyes Iztacala, Tlalnepantla de Baz, CP 54090, Estado de México, Mexico
| | - Claudia M García-Cuellar
- Subdirección de Investigación Básica, Instituto Nacional de Cancerología, San Fernando No. 22, Tlalpan, CP 14080, CDMX, Mexico.
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Chatterji A, Banerjee D, Billiar TR, Sengupta R. Understanding the role of S-nitrosylation/nitrosative stress in inflammation and the role of cellular denitrosylases in inflammation modulation: Implications in health and diseases. Free Radic Biol Med 2021; 172:604-621. [PMID: 34245859 DOI: 10.1016/j.freeradbiomed.2021.07.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/22/2021] [Accepted: 07/06/2021] [Indexed: 12/13/2022]
Abstract
S-nitrosylation is a very fundamental post-translational modification of protein and non-protein thiols due the involvement of it in a variety of cellular processes including activation/inhibition of several ion channels such as ryanodine receptor in the cardiovascular system; blood vessel dilation; cGMP signaling and neurotransmission. S-nitrosothiol homeostasis in the cell is tightly regulated and perturbations in homeostasis result in an altered redox state leading to a plethora of disease conditions. However, the exact role of S-nitrosylated proteins and nitrosative stress metabolites in inflammation and in inflammation modulation is not well-reviewed. The cell utilizes its intricate defense mechanisms i.e. cellular denitrosylases such as Thioredoxin (Trx) and S-nitrosoglutathione reductase (GSNOR) systems to combat nitric oxide (NO) pathology which has also gained current attraction as novel anti-inflammatory molecules. This review attempts to provide state-of-the-art knowledge from past and present research on the mechanistic role of nitrosative stress intermediates (RNS, OONO-, PSNO) in pulmonary and autoimmune diseases and how cellular denitrosylases particularly GSNOR and Trx via imparting opposing effects can modulate and reduce inflammation in several health and disease conditions. This review would also bring into notice the existing gaps in current research where denitrosylases can be utilized for ameliorating inflammation that would leave avenues for future therapeutic interventions.
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Affiliation(s)
- Ajanta Chatterji
- Amity Institute of Biotechnology Kolkata, Amity University Kolkata, Action Area II, Rajarhat, Newtown, Kolkata, West Bengal, 700135, India
| | - Debasmita Banerjee
- Department of Molecular Biology and Biotechnology, University of Kalyani, Block C, Nadia, Kalyani, West Bengal, 741235, India
| | - Timothy R Billiar
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA, 5213, USA
| | - Rajib Sengupta
- Amity Institute of Biotechnology Kolkata, Amity University Kolkata, Action Area II, Rajarhat, Newtown, Kolkata, West Bengal, 700135, India.
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Chen Z, Xu SL, Ge LY, Zhu J, Zheng T, Zhu Z, Zhou L. Sialic acid-binding immunoglobulin-like lectin 9 as a potential therapeutic target for chronic obstructive pulmonary disease. Chin Med J (Engl) 2021; 134:757-764. [PMID: 33595976 PMCID: PMC8104259 DOI: 10.1097/cm9.0000000000001381] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Indexed: 12/13/2022] Open
Abstract
ABSTRACT Chronic obstructive pulmonary disease (COPD) has become the third-leading cause of death worldwide, which is a severe economic burden to the healthcare system. Chronic bronchitis is the most common condition that contributes to COPD, both locally and systemically. Neutrophilic inflammation predominates in the COPD airway wall and lumen. Logically, repression of neutrophilia is an essential fashion to COPD treatment. However, currently available anti-neutrophilic therapies provide little benefit in COPD patients and may have serious side effects. Thus, there is an urgent need to explore an effective and safe anti-neutrophilic approach that might delay progression of the disease. Sialic acid-binding immunoglobulin-like lectin (Siglec)-9 is a member of the Siglec cell surface immunoglobulin family. It is noteworthy that Siglec-9 is highly expressed on human neutrophils and monocytes. Ligation of Siglec-9 by chemical compounds or synthetic ligands induced apoptosis and autophagic-like cell death in human neutrophils. Furthermore, administration of antibody to Siglec-E, mouse functional ortholog of Siglec-9, restrained recruitment and activation of neutrophils in mouse models of airway inflammation in vivo. Given the critical role that neutrophils play in chronic bronchitis and emphysema, targeting Siglec-9 could be beneficial for the treatment of COPD, asthma, fibrosis, and related chronic inflammatory lung diseases.
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Affiliation(s)
- Zi Chen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Shuang-Lan Xu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Lin-Yang Ge
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Jin Zhu
- Epidemiological Department, Huadong Medical Institute of Biotechniques, Nanjing, Jiangsu 210002, China
| | - Tao Zheng
- Department of Pediatrics and Department of Molecular Microbiology and Immunology, Brown University Warren Alpert Medical School, Providence, RI 02912, USA
| | - Zhou Zhu
- Department of Pediatrics and Department of Molecular Microbiology and Immunology, Brown University Warren Alpert Medical School, Providence, RI 02912, USA
| | - Linfu Zhou
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu 210029, China
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Maniscalco M. The Nitric Oxide View: Perspectives and Applications. Curr Med Chem 2020; 27:7134-7135. [PMID: 33342396 DOI: 10.2174/092986732742201105102021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Mauro Maniscalco
- Istituti Clinici Scientifici Maugeri, IRCCS Via Bagni Vecchi, 1 82037 Telese Terme (BN), Italy
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10
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Liu Y, Huang ZZ, Min L, Li ZF, Chen K. The BRD4 inhibitor JQ1 protects against chronic obstructive pulmonary disease in mice by suppressing NF-κB activation. Histol Histopathol 2020; 36:101-112. [PMID: 33215396 DOI: 10.14670/hh-18-283] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To examine the effect of the BRD4 inhibitor JQ1 on mice with chronic obstructive pulmonary disease (COPD) via NF-κB. METHODS COPD models constructed by exposure to cigarette smoke and intratracheal instillation of lipopolysaccharides (LPS) in mice were treated with JQ1 (15, 25 or 50 mg/kg). HE staining was performed to observe histopathological changes in the lung tissues. Enzyme-linked immunosorbent assays (ELISAs) were used to measure the levels of IL-10, IFN-γ, IL-17, IL-1β, IL-6, TNF-α, MMP-2, MMP-9, MDA, SOD, T-AOC and HO-1, and gelatin zymography assays were used to examine MMP-2 and MMP-9 activity. A TransAMTM NF-κB p65 detection kit was used to test NF-κB p65/DNA binding activity. Western blotting was conducted to analyze NF-κB p65 in the nucleus and its acetylation. RESULTS JQ1 dose-dependently improved the histopathological changes in the lung tissues and decreased the mean linear intercept (MLI), destructive index and inflammatory score of the mice with COPD. The mice with COPD showed increased levels of MMP-2, MMP-9, IFN-γ, IL-17, IL-1β, IL-6 and TNF-α with decreased IL-10 level; these changes were reversed by JQ1 in a dose-dependent manner. In addition, JQ1 reduced the MDA level and increased the SOD, HO-1 and T-AOC levels in mice with COPD, with suppression of NF-κB p65 expression in the nucleus, NF-κB/p65 (Lys310) acetylation and NF-κB p65/DNA binding activity in the lung tissues. CONCLUSION The BRD4 inhibitor JQ1 can downregulate MMP-2 and MMP-9 expression, reduce inflammatory responses, and alleviate oxidative stress in mice with COPD, and this mechanism might be related to the inhibition of NF-κB.
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Affiliation(s)
- Yan Liu
- Department of Respiratory and Critical Care Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Zhi-Zhen Huang
- Department of Stomatology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Li Min
- Department of Critical Care Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Zhi-Feng Li
- Department of Orthopedics, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Kui Chen
- Department of Emergency Medicine, Affiliated Dongfeng Hospital, Hubei University of Medicine, Shiyan, Hubei, China.
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