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Li F, Li X, Jiang M, Wang C, Liu G, Yang Z, Wu Y. Research progress into the application of Mycobacterium phlei in veterinary medicine. Vet Med Sci 2023; 9:2617-2624. [PMID: 37723902 PMCID: PMC10650220 DOI: 10.1002/vms3.1262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 08/21/2023] [Accepted: 09/03/2023] [Indexed: 09/20/2023] Open
Abstract
Mycobacterium phlei is a gram-positive acid-fast mycobacterium from the family Mycobacteriaceae. It is a valuable resource for both natural drugs and microecological preparations. It has been widely used in the field of human medicine; however, in the field of animal husbandry and veterinary medicine, the research and application of M. phlei is still in the preliminary exploration stage. This study aims to summarize the research progress of M. phlei in the field of veterinary medicine and provide a valuable reference for future research. Key words, such as 'M. phlei', 'veterinary field', 'immune balancer', 'genome' and other relevant words to this study, were used to search through PubMed, Web of Science, SciELO, Science Direct and Google Scholar databases. The results showed that the culture conditions of M. phlei were relatively simple, but its bacterial composition and genome sequence were relatively complex, and various components in the cell wall may have immunoregulatory effects. Therefore, the inactivated preparation made from M. phlei can have various applications in the veterinary field, such as growth regulation, immune regulation, antitumour, anti-parasite and asthma treatment. The literature review indicates that M. phlei preparation is an efficient and convenient immune system balance agent. Despite the challenges associated with the use of M. phlei preparations, it has a strong potential for application in veterinary medicine.
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Affiliation(s)
- Fan Li
- College of Veterinary MedicineHunan Agricultural UniversityChangshaHunanChina
| | - Xiang Li
- Hunan Canzoho Biological Technology Co., Ltd.LiuyangHunanChina
| | - Meng‐Lin Jiang
- College of Veterinary MedicineHunan Agricultural UniversityChangshaHunanChina
| | - Chun‐Hua Wang
- College of Veterinary MedicineHunan Agricultural UniversityChangshaHunanChina
| | - Gao‐Feng Liu
- Hunan Canzoho Biological Technology Co., Ltd.LiuyangHunanChina
| | - Zi Yang
- Academician WorkstationChangsha Medical UniversityChangshaHunanChina
| | - Yong Wu
- College of Veterinary MedicineHunan Agricultural UniversityChangshaHunanChina
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Xiao H, Zhang QN, Sun QX, Li LD, Xu SY, Li CQ. Transcriptomic Analysis Reveals a Link Between Hippo Signaling Pathway and Macrophages in Lungs of Mice with OVA-Induced Allergic Asthma. J Inflamm Res 2022; 15:423-437. [PMID: 35082511 PMCID: PMC8784274 DOI: 10.2147/jir.s346505] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 01/07/2022] [Indexed: 01/07/2023] Open
Affiliation(s)
- Huan Xiao
- Department of Emergency, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, Guangxi Province, People’s Republic of China
| | - Qian-nan Zhang
- Department of Emergency, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, Guangxi Province, People’s Republic of China
| | - Qi-xiang Sun
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, Guangxi Province, People’s Republic of China
| | - Lao-dong Li
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, Guangxi Province, People’s Republic of China
| | - Si-yue Xu
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, Guangxi Province, People’s Republic of China
| | - Chao-qian Li
- Department of Emergency, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, Guangxi Province, People’s Republic of China
- Correspondence: Chao-qian Li, Department of Emergency, The First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi Province, People’s Republic of China, Tel +86 13807887867, Fax +86 771-5350031, Email
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Ginger-derived compounds exert in vivo and in vitro anti-asthmatic effects by inhibiting the T-helper 2 cell-mediated allergic response. Exp Ther Med 2021; 23:49. [PMID: 34934427 PMCID: PMC8652391 DOI: 10.3892/etm.2021.10971] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 10/05/2021] [Indexed: 12/21/2022] Open
Abstract
6-Shogaol (SHO) and 6-gingerol (GIN), naturally derived compounds of ginger (Zingiber officinale Roscoe), have been found to have anti-allergic effects on dermatitis-like skin lesions and rhinitis. Although SHO and GIN have demonstrated a potential in various inflammatory diseases, their efficacy and mechanism in asthma have not been largely examined. Therefore, the present study demonstrated the anti-asthmatic effects of SHO and GIN on the T-helper (Th) 2 cell-mediated allergic response pathway in an ovalbumin (OVA)-induced asthma mouse model. The asthma mouse model was established with an intraperitoneal (i.p.) injection of 50 µg OVA and 1 mg aluminum hydroxide with or without an i.p. injection of SHO and GIN (10 mg/kg) before treatment with OVA. In addition, the current study assessed mast cell degranulation in antigen-stimulated RBL-2H3 cells under different treatment conditions (SHO or GIN at 0, 10, 25, 50 and 100 nM) and determined the mRNA and protein levels of anti-oxidative enzymes [superoxide dismutase (SOD)1, SOD2, glutathione peroxidase-1/2, catalase] in lung tissues. SHO and GIN inhibited eosinophilia in the bronchoalveolar lavage fluids and H&E-stained lung tissues. Both factors also decreased mucus production in periodic acid-Schiff-stained lung tissues and the levels of Th2 cytokines in these tissues. GIN attenuated oxidative stress by upregulating the expression levels of anti-oxidative proteins. In an in vitro experiment, the degranulation of RBL-2H3 rat mast cells was significantly decreased. It was found that SHO and GIN effectively suppressed the allergic response in the mouse model by inhibiting eosinophilia and Th2 cytokine production. Collectively, it was suggested that SHO can inhibit lung inflammation by attenuating the Th2 cell-mediated allergic response signals, and that GIN can inhibit lung inflammation and epithelial cell remodeling by repressing oxidative stress. Therefore, SHO and GIN could be used therapeutically for allergic and eosinophilic asthma.
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Xiao H, Zhang QN, Sun QX, Li LD, Xu SY, Li CQ. Effects of Mycobacterium vaccae Aerosol Inhalation on Airway Inflammation in Asthma Mouse Model. J Aerosol Med Pulm Drug Deliv 2021; 34:374-382. [PMID: 33945334 DOI: 10.1089/jamp.2021.0008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background: Mycobacterium vaccae vaccine, a composition of Mycobacterium proteins, has been known to have bidirectional immunomodulatory functions. Recent studies have shown that M. vaccae has a therapeutic potential for treating asthma. However, little is known regarding the effect of M. vaccae aerosol inhalation during allergen sensitization or challenge on asthma. The purpose of this study was to explore the effect and the underlying mechanism of M. vaccae aerosol inhalation during allergen sensitization or challenge on airway inflammation in an asthma mouse model. Methods: Asthma mouse models were established. Mice received aerosol inhalation with M. vaccae once daily during allergen sensitization or challenge for 5 days successively. Airway responsiveness, bronchoalveolar lavage fluid (BALF) cell count, histology, and cytokine concentrations (IL-4, IFN-γ, IL-10, and IL-17) were measured. The relative mRNA expression of ASC, caspase-1, TNF-α, and IL-1β was also determined. Expression of pulmonary NLRP3 and nuclear factor kappa B (NF-κB) protein was measured using immunohistochemistry and Western blot. Results: M. vaccae aerosol inhalation suppressed airway hyperresponsiveness and inflammation, reduced levels of IL-4, upregulated expression of IFN-γ and IL-10 in BALF, inhibited mRNA expression of pulmonary ASC, caspase-1, TNF-α, and IL-1β, and also inhibited expression of pulmonary NLRP3 and NF-κB protein during allergen sensitization or challenge. Conclusion: M. vaccae aerosol inhalation can suppress airway hyperresponsiveness and inflammation during allergen sensitization or challenge, and may be a promising approach for asthma therapy.
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Affiliation(s)
- Huan Xiao
- Department of Emergency and The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Qian-Nan Zhang
- Department of Emergency and The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Qi-Xiang Sun
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Lao-Dong Li
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Si-Yue Xu
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Chao-Qian Li
- Department of Emergency and The First Affiliated Hospital of Guangxi Medical University, Nanning, China
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Yao YE, Zhang JH, Chen XJ, Huang JL, Sun QX, Liu WW, Zeng H, Li CQ. Regulation of γδT17 cells by Mycobacterium vaccae through interference with Notch/Jagged1 signaling pathway. ACTA ACUST UNITED AC 2020; 53:e9551. [PMID: 33053115 PMCID: PMC7552905 DOI: 10.1590/1414-431x20209551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 07/23/2020] [Indexed: 11/22/2022]
Abstract
The objective of this study was to investigate the effect of Mycobacterium vaccae on Jagged 1 and gamma delta T17 (γδT17) cells in asthmatic mice. An asthma mouse model was established through immunization with ovalbumin (OVA). Gamma-secretase inhibitor (DAPT) was used to block the Notch signaling pathway. M. vaccae was used to treat asthma, and related indicators were measured. Blocking Notch signaling inhibited the production of γδT17 cells and secretion of cytokine interleukin (IL)-17, which was accompanied by a decrease in Jagged1 mRNA and protein expression in the treated asthma group compared with the untreated asthma group. Similarly, treatment with M. vaccae inhibited Jagged1 expression and γδT17 cell production, which was associated with decreased airway inflammation and reactivity. The Notch signaling pathway may play a role in the pathogenesis of asthma through the induction of Jagged1 receptor. On the other hand, the inhibitory effect of M. vaccae on Jagged1 receptor in γδT17 cells could be used for the prevention and treatment of asthma.
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Affiliation(s)
- Yi En Yao
- Department of Respiratory Medicine, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Jing Hong Zhang
- Department of Internal Medicine, Affiliated Tumor Hospital, Guangxi Medical University, Nanning, Guangxi, China
| | - Xiao Ju Chen
- Department of Critical Care, First People's Hospital of Yulin City, Nanning, Guangxi, China
| | - Jian Lin Huang
- Department of Respiratory Medicine, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Qi Xiang Sun
- Department of Respiratory Medicine, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Wei Wei Liu
- Department of Emergency Medicine, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Huan Zeng
- The Second Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, China
| | - Chao Qian Li
- Department of Respiratory Medicine, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
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Wu M, Yang Y, Yuan L, Yang M, Wang L, Du X, Qin L, Wu S, Xiang Y, Qu X, Liu H, Qin X, Liu C. DNA methylation down-regulates integrin β4 expression in asthmatic airway epithelial cells. Clin Exp Allergy 2020; 50:1127-1139. [PMID: 32618381 DOI: 10.1111/cea.13697] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 06/10/2020] [Accepted: 06/17/2020] [Indexed: 12/21/2022]
Abstract
BACKGROUND Integrin β4 (ITGB4) is a hemi-desmosome protein which is downregulated in the airway epithelial cells of asthma patients. The proximal promoters and exons of ITGB4 contain CpG islands or multiple CpG sites both in human and mice, which indicated the possible methylation regulation of ITGB4 in airway epithelial cells. OBJECTIVE We sought to unveil that DNA methylation regulates the decreased ITGB4 during the pathogenesis of asthma. METHODS Mice were exposed to house dust mite (HDM) extracts to construct an asthma model. 5-Aza-2'-deoxycytidine (5-AZA) or dexamethasone (DEX) were added in the last two weeks. Besides, the primary human bronchial epithelial (HBE) cells were incubated for the detection of ITGB4 expression and methylation status after HDM stress. Furthermore, DNA methylation of ITGB4 in peripheral blood was measured in asthma patients. Logistic regression was employed to evaluate the association between methylation sites and asthma patients' ages in the control of potential confounders. Moreover, the correlations between differentially methylated sites (DMSs) and clinical parameters in asthma patients were assessed. Finally, the ability of candidate DMSs to predict asthma was evaluated by receiver operating characteristic (ROC) analysis and principal component analysis (PCA). RESULTS We found that in HDM-stressed asthma model, DNA methylation regulated the reduced ITGB4 expression in airway epithelial cells. Moreover, alteration in the specific CpG sites (chr17:73717720 and chr17:73717636) of ITGB4 may regulate ITGB4 expression and further may be associated with the clinically phenotypic of asthma. The specific DMSs of ITGB4 in peripheral blood can distinguish asthma patients from healthy controls (HCs) effectively. CONCLUSIONS AND CLINICAL RELEVANCE This study confirmed that DNA methylation regulates the decreased expression of ITGB4 in the airway epithelial cells of asthma patients. These results supply some useful insights to the mechanism of the decreased ITGB4 in asthmatic airway epithelial and provide possible targets for early prediction and screening of asthma.
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Affiliation(s)
- Mengping Wu
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Yu Yang
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Lin Yuan
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Ming Yang
- Faculty of Health and Medicine, Centre for Asthma and Respiratory Disease, School of Biomedical Sciences and Pharmacy, University of Newcastle and Hunter Medical Research Institute, Callaghan, NSW, Australia
| | - Leyuan Wang
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Xizi Du
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Ling Qin
- Department of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Xiangya Hospital, Central South University, Changsha, China
| | - Shuangyan Wu
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Yang Xiang
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Xiangping Qu
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Huijun Liu
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Xiaoqun Qin
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China
| | - Chi Liu
- Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, China.,Research Center of China-Africa Infectious Diseases, Xiangya School of Medicine Central South University, Changsha, China
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Jiang XH, Li CQ, Feng GY, Luo MJ, Sun QX. Inhalation of nebulized Mycobacterium vaccae can protect against allergic bronchial asthma in mice by regulating the TGF-β/Smad signal transduction pathway. Allergy Asthma Clin Immunol 2020; 16:59. [PMID: 32834825 PMCID: PMC7386169 DOI: 10.1186/s13223-020-00456-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 06/25/2020] [Indexed: 12/11/2022] Open
Abstract
Background Mycobacterium vaccae nebulization imparted protective effect against allergic asthma in a mouse model. The TGF-β/Smad signal transduction pathway plays an important role in allergic bronchial asthma. However, the effect of M. vaccae nebulization on the TGF-β/Smad signal transduction pathway in mouse models of allergic asthma remains unclear. This study investigated the preventive effect of M. vaccae nebulization during bronchial asthma in a mouse model and elucidate the implication of TGF-β/Smad signal transduction pathway in the process. Methods In total, 24 female Balb/c mice were randomized to normal control (group A), asthma control (group B), and M. vaccae nebulization (group C) groups. Both groups B and C were sensitized using ovalbumin for establishment of the asthmatic model; group A received phosphate-buffered solution. Prior to the establishment of asthma, Group C was nebulized with M. vaccae. Airway responsiveness was measured in all the groups, using a noninvasive lung function machine before and 24 h after establishment of the asthmatic model. The animals were then harvested, and bronchoalveolar lavage fluid (BALF) and lung tissue were collected. The total cell counts in BALF was estimated. Protein expression of TGF-β1, TβR1, Smad1, and Smad7 was detected by immunohistochemistry. The population of CD3+γδT, IL-13+CD3+T, TGF-β+CD3+T, IL-13+CD3+γδT, and TGF-β+ CD3+ γδT cells were detected by flow cytometry. One-way analysis of variance for within-group comparisons, the least significant difference t-test or Student–Newman–Keuls test for intergroup comparisons, and the nonparametric rank sum test for analysis of airway inflammation scores were used in the study. Results The eosinophil count; protein expression of TGF-β1, TβR1, and Smad1; and percentages of CD3+γδT and IL-13+CD3+T cells were significantly lower in the M. vaccae nebulization group than in the asthma control group (P < 0.01). There were significant intergroup differences in the percentages of TGF-β+CD3+T and IL-13+CD3+γδT cells (P < 0.05). Conclusions Mycobacterium vaccae nebulization could confer protection against allergic bronchial asthma by reducing airway responsiveness and alleviating airway inflammation in mice. The underlying mechanism might be attributed its effect on the deregulated expression of TGF-β1, TβR1, Smad1, and Smad7 of the TGF-β/Smad signal transduction pathway.
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Affiliation(s)
- Xiao-Hong Jiang
- Department of Geriatric Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021 Guangxi China
| | - Chao-Qian Li
- The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021 Guangxi China
| | - Guang-Yi Feng
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021 Guangxi China
| | - Ming-Jie Luo
- Department of Respiratory Medicine, Nanxishan Hospital of Guangxi Zhuang Autonomous Region, Guilin, 530021 Guangxi China
| | - Qi-Xiang Sun
- The Graduate School of Guangxi Medical University, Nanning, 530021 Guangxi China
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Zhang JH, Yang X, Chen YP, Zhang JF, Li CQ. Nrf2 Activator RTA-408 Protects Against Ozone-Induced Acute Asthma Exacerbation by Suppressing ROS and γδT17 Cells. Inflammation 2020; 42:1843-1856. [PMID: 31256292 DOI: 10.1007/s10753-019-01046-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Ozone is a strong oxidant in air pollution that exacerbates respiratory disorders and is a major risk factor for acute asthma exacerbation. Ozone can induce reactive oxygen species (ROS) and airway neutrophilic inflammation. In addition, γδT17 cells contribute to IL-17A production upon ozone challenge, resulting in neutrophilic inflammation. It is known, however, that Nrf2 can ameliorate oxidative stress. We therefore investigated whether RTA-408, an Nrf2 activator, can attenuate airway inflammation and inhibit ROS production and whether this effect involves γδT17 cells. Balb/c mice were sensitized/challenged with ovalbumin (OVA) and followed by ozone exposure. We investigated the effect of Nrf2 activator RTA-408 on airway hyperresponsiveness, neutrophilic airway inflammation, cytokine/chemokine production, and OVA-specific IgE level in a mouse model of O3 induced asthma exacerbation. Furthermore, malondialdehyde (MDA) and glutathione (GSH) levels in lung and intracellular ROS were measured. IL-17+ γδT cell percentage by flow cytometer was determined. Nrf2 protein expression by western blot was also examined. We observed that RTA-408 attenuated ROS release during ozone-induced asthma exacerbation and suppressed neutrophil lung infiltration. RTA-408 decreased pro-inflammatory cytokine production and reduced the percentage of IL-17+ γδT cells. Thus, our results suggest that RTA-408 does attenuate airway inflammation in a murine model of ozone-induced asthma exacerbation.
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Affiliation(s)
- Jing-Hong Zhang
- Department of Emergency, The First Affiliated Hospital of Guangxi Medical University, the Guangxi Talent Highland for Emergency and Rescue Medicine, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China
| | - Xia Yang
- Department of Emergency, The First Affiliated Hospital of Guangxi Medical University, the Guangxi Talent Highland for Emergency and Rescue Medicine, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China
| | - Yi-Ping Chen
- Department of Emergency, The First Affiliated Hospital of Guangxi Medical University, the Guangxi Talent Highland for Emergency and Rescue Medicine, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China
| | - Jian-Feng Zhang
- Department of Emergency, The First Affiliated Hospital of Guangxi Medical University, the Guangxi Talent Highland for Emergency and Rescue Medicine, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China.
| | - Chao-Qian Li
- Department of Emergency, The First Affiliated Hospital of Guangxi Medical University, the Guangxi Talent Highland for Emergency and Rescue Medicine, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China.
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Chu C, Lei X, Li Y, Luo Y, Ding Y, Zhou W, Ji W. High expression of miR-222-3p in children with Mycoplasma pneumoniae pneumonia. Ital J Pediatr 2019; 45:163. [PMID: 31842954 PMCID: PMC6916232 DOI: 10.1186/s13052-019-0750-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 11/19/2019] [Indexed: 12/13/2022] Open
Abstract
Objectives Mycoplasma pneumoniae is a leading cause of community-acquired pneumonia in children. However, its mechanism of pathogenesis is not fully understood, and microRNAs might play a role. This study aimed to explore the microRNA-222-3p (miR-222-3p) expression and its possible role in children with M.pneumoniae pneumonia (MPP). Methods Thirty-six children with MPP and twenty-seven age-matched controls from Children’s Hospital of Soochow University were enrolled in this study. MiR-222-3p and cluster of differentiation 4 (CD4) mRNA were detected using real-time PCR in children’s peripheral blood plasma samples. THP-1 cells and mice were stimulated with M.pneumoniae lipid-associated membrane proteins(LAMPs). Results Children with MPP had significantly higher levels of miR-222-3p and lower levels of CD4 in peripheral blood plasma (P < 0.05). Additionally, Sixteen children with MPP complicated with pleural effusion had higher miR-222-3p levels than those without pleural effusion. MiR-222-3p or CD4 in THP-1 cells increased or decreased, respectively, in a dose dependent manner after LAMP stimulation. In LAMP-stimulated mice massive inflammatory cells infiltrates surrounded the bronchioles, and miR-222-3p increased in the bronchoalveolar lavage fluid. In conclusion, miR-222-3p was highly expressed in children with MPP, especially those with pleural effusion. Conclusion Small sample studies showed that M.pneumoniae or its LAMPs could increase miR-222-3p and decrease CD4 in macrophages,both in vitro and vivo.Thus, miR-222-3p might be an MPP biomarker for the diagnosis and prognosis.
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Affiliation(s)
- Chu Chu
- Department of Infectious Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, 215123, China
| | - Xiaoli Lei
- Department of Infectious Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, 215123, China
| | - Yuqin Li
- Department of Infectious Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, 215123, China
| | - Yali Luo
- Department of Infectious Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, 215123, China
| | - Ying Ding
- Department of Infectious Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, 215123, China
| | - Weifang Zhou
- Department of Infectious Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, 215123, China.
| | - Wei Ji
- Department of Respiratory Disease, Children's Hospital of Soochow University, Soochow University, Suzhou, 215123, China.
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Tanaka S, Hoshino Y, Sakagami T, Fukano H, Matsui Y, Hiranuma O. Pathogenicity of Mycolicibacterium phlei, a non-pathogenic nontuberculous mycobacterium in an immunocompetent host carrying anti-interferon gamma autoantibodies: a case report. BMC Infect Dis 2019; 19:454. [PMID: 31117976 PMCID: PMC6530062 DOI: 10.1186/s12879-019-4050-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 04/30/2019] [Indexed: 01/20/2023] Open
Abstract
Background Mycolicibacterium phlei (M. phlei) is known to be a non-pathogenic nontuberculous mycobacterium (NTM) which rarely causes diseases in humans. A disseminated NTM infection is mostly caused by the Mycobacterium avium complex (MAC) and is known to develop in immunocompromised hosts, like those with acquired immune deficiency syndrome (AIDS). Here, we report a case of disseminated M. phlei infection in an immunocompetent host carrying anti-interferon gamma (IFN-γ) autoantibodies. Case presentation We detected M. phlei in multiple organs of an elderly woman with no significant medical history except positivity for anti-IFN-γ autoantibodies. She tested negative for human immunodeficiency virus (HIV)-1, 2/ Human T-cell leukemia virus type 1 (HTLV-1) antibody. High-resolution computed tomography (HRCT) of the chest demonstrated a nodule in the left S1 + 2 segment, interlobular septal thickening, multi lymphadenopathy, and osteolysis. A maximum intensity projection image following fluorodeoxyglucose-positron emission tomography (FDG-PET) revealed multifocal hypermetabolic lesions in the nodule and all the swollen lymph nodes seen in HRCT. FDG also accumulated in multiple bones. Advanced primary lung cancer was suspected, and biopsies of each lesion were performed. The pathology revealed caseating granuloma, positive for acid-fast bacteria, and DNA sequencing of the acid-fast bacteria confirmed the organism to be M. phlei. The patient also tested positive for anti-IFN-γ autoantibodies. Based on these findings, she was diagnosed with disseminated M. phlei infection, with anti-IFN-γ autoantibodies. Conclusions Though known to be non-pathogenic, we show that M. phlei can be pathogenic like the MAC in immunocompetent individuals carrying anti-IFN-γ autoantibodies.
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Affiliation(s)
- Satomi Tanaka
- Otsu City Hospital, 2-9-9, Motomiya, Otsu-city, Shiga Prefecture, Japan.
| | - Yoshihiko Hoshino
- Leprosy Research Centre, National Institute of Infectious Diseases, 4 Chome-2-1 Aobacho, Higashimurayama, Tokyo, Japan
| | - Takuro Sakagami
- Department of Respiratory Medicine, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, Japan
| | - Hanako Fukano
- Leprosy Research Centre, National Institute of Infectious Diseases, 4 Chome-2-1 Aobacho, Higashimurayama, Tokyo, Japan
| | - Yohei Matsui
- Otsu City Hospital, 2-9-9, Motomiya, Otsu-city, Shiga Prefecture, Japan
| | - Osamu Hiranuma
- Otsu City Hospital, 2-9-9, Motomiya, Otsu-city, Shiga Prefecture, Japan
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11
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Yang X, Zhang JH, Deng WS, Li CQ. Imbalance of γδT17/γδTreg cells in the pathogenesis of allergic asthma induced by ovalbumin. ACTA ACUST UNITED AC 2018; 51:e7127. [PMID: 29995107 PMCID: PMC6050949 DOI: 10.1590/1414-431x20187127] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Accepted: 05/17/2018] [Indexed: 12/12/2022]
Abstract
We aimed to explore the imbalance between the T helper 17 γδT cells (γδT17) and the regulatory γδT cells (γδTreg) in asthmatic mice. Male Balb/c mice were randomly divided into the normal control group and the asthmatic model group. The asthmatic model group mice were intraperitoneally injected with the mixture of ovalbumin (OVA)/Al(OH)3 and then activated by exposure of the animals to OVA atomization. Airway hyperresponsiveness (AHR) was determined by a non-invasive lung function machine. Hematoxylin and eosin and Alcian blue-periodic acid Schiff staining were done for histopathological analysis. Interleukin (IL)-17 and IL-35 levels in bronchoalveolar lavage fluid were detected by ELISA. The percentage of IL-17+ γδT cells and Foxp3+ γδT cells in spleen cells suspension were detected and the transcription levels of RORγt and Foxp3 in the lung tissue were determined. Compared with the normal control, the severity of airway inflammation and AHR were higher in the asthmatic mice. Furthermore, mice in the asthmatic group displayed significant increases of IL-17+ γδT cells, expression of IL-17A, and RORγt, whereas control mice displayed marked decreases of Foxp3+ γδT cells, expression of IL-35, and transcription factor Foxp3. In addition, the mRNA expression of RORγt was positively correlated with the percentage of IL-17+γδT cells, and the mRNA level of Foxp3 was positively correlated with the percentage of Foxp3+ γδT cells. The imbalance of γδT17/γδTreg in the asthmatic mice may contribute to the pathogenesis of OVA-induced asthma.
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Affiliation(s)
- Xia Yang
- Department of Emergency, the First Affiliated Hospital of Guangxi Medical University, The Guangxi Talent Highland for Emergency and Rescue Medicine, Nanning, Guangxi, China
| | - Jing-Hong Zhang
- Department of Emergency, the First Affiliated Hospital of Guangxi Medical University, The Guangxi Talent Highland for Emergency and Rescue Medicine, Nanning, Guangxi, China
| | - Wang-Sheng Deng
- Department of Emergency, the First Affiliated Hospital of Guangxi Medical University, The Guangxi Talent Highland for Emergency and Rescue Medicine, Nanning, Guangxi, China
| | - Chao-Qian Li
- Department of Emergency, the First Affiliated Hospital of Guangxi Medical University, The Guangxi Talent Highland for Emergency and Rescue Medicine, Nanning, Guangxi, China.,Department of Respiratory Medicine, Guangxi Vocational and Technical College of Health, Nanning, Guangxi, China
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12
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Zhang JH, Chen YP, Yang X, Li CQ. Vitamin D3 levels and NLRP3 expression in murine models of obese asthma: association with asthma outcomes. ACTA ACUST UNITED AC 2017; 51:e6841. [PMID: 29160418 PMCID: PMC5685066 DOI: 10.1590/1414-431x20176841] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 09/11/2017] [Indexed: 02/13/2023]
Abstract
Vitamin D (25(OH)D3) is an essential nutrient that plays a role in the immune system. Serum 25(OH)D3 is found to be associated with asthma. However, the role of vitamin D in obese asthma remains unclear. Therefore, we investigated the association between vitamin D levels and asthma outcomes in a murine model of obese asthma. We also evaluated NLRP3 inflammasome activity in the pathogenesis of obese asthma. We divided 20 male Balb/c mice (3–4 weeks old) into 4 groups: normal control, asthma, obese, and obese asthma and developed an obese asthma mouse model. Airway hyperreactivity, cytokine concentrations, 25(OH)D3 levels, NLRP3 mRNA and IL-1β mRNA expressions were measured. Lung histology and bronchoalveolar lavage fluid (BALF) cell count were also determined. Obese asthma mice showed a significant increase in airway hyper-responsiveness, airway inflammation, pro-inflammatory cytokine levels and NLRP3 mRNA, IL-1β mRNA expression. Both asthma and obese groups had lower 25(OH)D3 levels. Vitamin D levels in obese asthma were the lowest among all groups. Vitamin D levels correlated negatively with body weight, lung resistance levels at 25 mg/mL of methacholine, total inflammatory cells, and IL-1β and IL-17 concentrations in BALF. These data demonstrated an association between serum vitamin D levels and outcomes of obese asthma, and indicated that NLRP3 inflammasome may play a role in this disorder.
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Affiliation(s)
- J-H Zhang
- Department of Emergency, the First Affiliated Hospital of Guangxi Medical University, The Guangxi Talent Highland for Emergency and Rescue Medicine, Guangxi Colleges and Universities Key Laboratory of Emergency Medicine Research, Nanning, Guangxi, China
| | - Y-P Chen
- Department of Geriatrics, Guangxi Minzu Hospital, The Affiliated Minzu Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - X Yang
- Department of Emergency, the First Affiliated Hospital of Guangxi Medical University, The Guangxi Talent Highland for Emergency and Rescue Medicine, Guangxi Colleges and Universities Key Laboratory of Emergency Medicine Research, Nanning, Guangxi, China
| | - C-Q Li
- Department of Emergency, the First Affiliated Hospital of Guangxi Medical University, The Guangxi Talent Highland for Emergency and Rescue Medicine, Guangxi Colleges and Universities Key Laboratory of Emergency Medicine Research, Nanning, Guangxi, China.,Department of Respiratory Medicine, Guangxi Vocational and Technical College of Health, Nanning, Guangxi, China
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13
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Ming M, Li C, Luo Z, Lv S, Sun Q. The effect of inhaled inactived Mycobacterium phlei as a treatment for asthma. Mol Med Rep 2016; 15:777-783. [PMID: 28035388 PMCID: PMC5364862 DOI: 10.3892/mmr.2016.6087] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 11/21/2016] [Indexed: 01/06/2023] Open
Abstract
Allergic asthma is a chronic airway disorder characterized by airway inflammation, mucus hypersecretion, and airway hyperresponsiveness (AHR). A murine model of asthma was used to examine the antiasthmatic effect of inhaled inactived Mycobacterium phlei (M. phlei). AHR, neutrophil levels, eosinophil levels and levels of interleukin (IL)-17 and IL-23 receptor (IL-23R) were monitored. The results demonstrated that inactivated M. phlei alleviates the IL-17+γδT cell-mediated immune response and attenuates airway inflammation and airway hyperresponsiveness in the asthmatic murine lung, partially through inhibiting the expression of IL-23R. In conclusion, inactivated M. phlei may be an effective antiasthmatic treatment, regulating IL-17-producing γδT (IL-17+γδT) cell-mediated airway inflammation and airway hyperresponsiveness to relieve the symptoms of mice with asthma.
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Affiliation(s)
- Moyu Ming
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Chaoqian Li
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Zhixi Luo
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Shengqiu Lv
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Qixiang Sun
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
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Ming M, Luo Z, Lv S, Li C. Inhalation of inactivated‑Mycobacterium phlei prevents asthma‑mediated airway hyperresponsiveness and airway eosinophilia in mice by reducing IL‑5 and IL‑13 levels. Mol Med Rep 2016; 14:5343-5349. [PMID: 27779664 DOI: 10.3892/mmr.2016.5865] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 10/04/2016] [Indexed: 11/06/2022] Open
Abstract
The present study aimed to investigate whether inhalation of inactivated‑Mycobacterium phlei could prevent airway hyperresponsiveness and airway eosinophilia. A total of 24 male Balb/c mice were randomly divided into three groups: Normal control group (group A), asthma model group (group B) and the intervention group (group C), (8 mice/group). Group A mice were sensitized and with challenged saline and group B with ovalbumin (OVA). Group C mice were administered with aerosol Mycobacterium phlei once daily prior to the allergen challenge. Airway responsiveness in each group was assessed. All the animals were sacrificed and lung tissues, blood samples and bronchoalveolar lavage fluid (BALF) were harvested. Cell fractionation and differential cells were counted in serum and BALF. HE staining and alcian blue/periodic acid Schiff staining were used to measure airway eosinophilic inflammation and mucus production. The levels of the cytokines IL‑5, IL‑13 and IgE were measured in lung and BALF as determined by ELISA and reverse transcription‑quantitative polymerase chain reaction assays. The results indicated that inactivated‑Mycobacterium phlei suppressed the airway hyperresponsiveness and mitigated airway eosinophilia induced by a methacholine challenge, and significantly reduced the levels of cytokines IL‑5 and IL‑13 in lung tissue and IgE level in BALF when compared with the OVA‑sensitized mice. In conclusion, inhalation of inactivated‑Mycobacterium phlei could reduce OVA‑induced airway hyperresponsiveness and may be a potential alternative therapy for allergic airway diseases.
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Affiliation(s)
- Moyu Ming
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Zhixi Luo
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Shengqiu Lv
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Chaoqian Li
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
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Li C, Jiang X, Luo M, Feng G, Sun Q, Chen Y. Mycobacterium vaccae Nebulization Can Protect against Asthma in Balb/c Mice by Regulating Th9 Expression. PLoS One 2016; 11:e0161164. [PMID: 27518187 PMCID: PMC4982628 DOI: 10.1371/journal.pone.0161164] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 08/01/2016] [Indexed: 11/19/2022] Open
Abstract
Asthma is a heterogeneous disease characterized by chronic airway inflammation. CD4(+) T-helper 9 (Th9) cells are closely linked to asthma, helping to regulate inflammation and immunity. Epidemiological studies showed that mycobacteria infections are negatively associated with asthma. Our previous research showed that inactivated Mycobacterium phlei nebulization alleviated the airway hyperresponsiveness and inflammation of asthma. However, the relationship between Th9 cells and mycobacteria remains unknown. Here, we evaluated the relationship between Mycobacterium vaccae nebulization and Th9 cells in asthmatic mice. Eighteen Balb/c mice were randomized into 3 groups of 6 mice each (normal control group, asthma control group, and nebulization asthma group [Neb. group]). The Neb. group was nebulized with M. vaccae one month before establishment of the asthmatic model with ovalbumin (OVA) sensitization, and the normal and asthma control groups were nebulized with phosphate-buffered saline. The hyperresponsiveness of the mouse airways was assessed using a non-invasive lung function machine. Lung airway inflammation was evaluated by hematoxylin and eosin and periodic acid-Schiff staining. Cytokine interlukin-9 (IL-9) concentration and OVA-specific IgE in the bronchoalveolar lavage fluid were measured by enzyme-linked immunosorbent assays. The percentages of γδTCR+ CD3+, IL-9+CD3+, IL-10+CD3+ lymphocytes, and IL9+γδT and IL-10+γδT cells were detected by flow cytometry. The airway inflammation and concentration of IL-9 and OVA-specific IgE were significantly reduced in the Neb. group compared to the asthma control group. The Neb. group had lower airway hyperresponsiveness, percentages of γδTCR+CD3+ and IL-9+CD3+ lymphocytes, and IL9+γδT cells, and higher percentages of IL-10+CD3+ lymphocytes and IL-10+γδT cells compared to the asthma control group. Thus, mouse bronchial asthma could be prevented by M. vaccae nebulization. The mechanism could involve M. vaccae-mediated effects on induction of IL-9 secretion and suppression of IL-10 secretion from γδT cells. γδT cells showed prominent IL-10 expression, indicating that they possibly belong to the Th9 family.
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Affiliation(s)
- Chaoqian Li
- Department of Respiratory Medicine, Guangxi Medical College, Nanning, Guangxi, China
- Department of Geriatric Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Xiaohong Jiang
- Department of Geriatric Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
- * E-mail:
| | - Mingjie Luo
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Guangyi Feng
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Qixiang Sun
- The Graduate School of Guangxi Medical University, Nanning, Guangxi, China
| | - Yiping Chen
- Department of Geriatric Disease, The National Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
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ZHONG JF, ZHANG XQ, WU WG, TU W, LIU ZX, FANG RJ. Effects of Mycobacterium phlei on intestinal microecology andserum immunological parameters of weaned piglets. TURKISH JOURNAL OF VETERINARY & ANIMAL SCIENCES 2016. [DOI: 10.3906/vet-1506-57] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ming M, Li C, Luo Z, Lv S. Effect of inhaled inactivated Mycobacterium phlei in children with moderate asthma. Immunotherapy 2013; 5:191-7. [PMID: 23413910 DOI: 10.2217/imt.12.156] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Bacillus Calmette-Guérin and other mycobacterial vaccines are important therapeutic methods in a series of chronic inflammatory disorders characterized by Th1/Th2 imbalance in which Th2 type cells and cytokines often increase. However, few studies have investigated whether it can reduce or prevent the symptoms and attacks in children with asthma. This study evaluated the effect of inactivated Mycobacterium phlei inhaled by an atomizing device placed on asthmatic children. In this randomized, single-center, Seretide-controlled study, children aged 4-12 years with newly diagnosed, moderate, persistent asthma were treated with either inhaled inactivated M. phlei or inhaled Seretide patch. The efficacy of inhaled inactivated M. phlei was related with the alleviation of asthma symptoms, improvement of lung function and reduction of bronchial hyper-responsiveness and total serum IgE, which was similar with Seretide. These findings may have important clinical value in confirming inhaled inactivated M. phlei as a new therapeutic method in moderately asthmatic children.
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Affiliation(s)
- Moyu Ming
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi, China
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