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Liu C, Fu C, Sun Y, You Y, Wang T, Zhang Y, Xia H, Wang X. Itaconic acid regulation of TFEB-mediated autophagy flux alleviates hyperoxia-induced bronchopulmonary dysplasia. Redox Biol 2024; 72:103115. [PMID: 38554522 PMCID: PMC10998238 DOI: 10.1016/j.redox.2024.103115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/03/2024] [Accepted: 03/05/2024] [Indexed: 04/01/2024] Open
Abstract
BACKGROUND Premature infants often require oxygen supplementation, which can elicit bronchopulmonary dysplasia (BPD) and lead to mitochondrial dysfunction. Mitochondria play important roles in lung development, in both normal metabolism and apoptosis. Enhancing our comprehension of the underlying mechanisms in BPD development can facilitate the effective treatments. METHODS Plasma samples from BPD and non-BPD infants were collected at 36 weeks post-menstrual age and used for metabolomic analysis. Based on hyperoxia-induced animal and cell models, changes in mitophagy and apoptosis were evaluated following treatment with itaconic acid (ITA). Finally, the mechanism of action of ITA in lung development was comprehensively demonstrated through rescue strategies and administration of corresponding inhibitors. RESULTS An imbalance in the tricarboxylic acid (TCA) cycle significantly affected lung development, with ITA serving as a significant metabolic marker for the outcomes of lung development. ITA improved the morphological changes in BPD rats, promoted SP-C expression, and inhibited the degree of alveolar type II epithelial cells (AEC II) apoptosis. Mechanistically, ITA mainly promotes the nuclear translocation of transcription factor EB (TFEB) to facilitate dysfunctional mitochondrial clearance and reduces apoptosis in AEC II cells by regulating autophagic flux. CONCLUSION The metabolic imbalance in the TCA cycle is closely related to lung development. ITA can improve lung development by regulating autophagic flux and promote the nuclear translocation of TFEB, implying its potential therapeutic utility in the treatment of BPD.
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Affiliation(s)
- Chengbo Liu
- Department of Pediatrics, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200093, China
| | - Changchang Fu
- Department of Pediatrics, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200093, China; Department of Neonatology, Children's Hospital of Soochow University, Suzhou, 215025, China
| | - Yazhou Sun
- Department of Pediatrics, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, 453000, China
| | - You You
- Department of Pediatrics, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200093, China
| | - Tengfei Wang
- Hongqiao International Institute of Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200336, China.
| | - Yongjun Zhang
- Department of Pediatrics, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200093, China.
| | - Hongping Xia
- Department of Pediatrics, Xinhua Hospital, Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200093, China.
| | - Xingyun Wang
- Hongqiao International Institute of Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200336, China.
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Li J, Cao J, Yan C, Gong X. TGF-α/EGFR signaling promotes lipopolysaccharide-induced abnormal elastin deposition and alveolar simplification. Exp Cell Res 2024; 437:113997. [PMID: 38508328 DOI: 10.1016/j.yexcr.2024.113997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 03/09/2024] [Accepted: 03/09/2024] [Indexed: 03/22/2024]
Abstract
Bronchopulmonary dysplasia (BPD) is characterized by shortened secondary septa and fewer, larger alveoli. Elastin deposition to the distal tips of the secondary septa is critical for elongation of the secondary septa. Alveolar myofibroblasts, which are thought to migrate to the septal tips during alveolarization, are mainly responsible for elastin production and deposition. Antenatal exposure to inflammation induces abnormal elastin deposition, thereby increasing the risk of developing BPD. Here, we found that lipopolysaccharide (LPS) significantly increased the expression of transforming growth factor-α (TGF-α) in an LPS-induced rat model of BPD and in LPS-treated human pulmonary epithelial cells (BEAS-2B). In addition, in vitro experiments suggested that LPS upregulated TGF-α expression via toll-like receptor 4 (TLR4)/tumor necrosis factor α-converting enzyme (TACE) signaling. Increased TGF-α levels via its receptor epidermal growth factor receptor (EGFR)-induced lysyl oxidase (LOX) overactivation and cell division cycle 42 (Cdc42) activity inhibition of myofibroblasts. Similarly, in vivo LOX overactivation and inhibition of Cdc42 activity were observed in the lungs of LPS-exposed pups. LOX overactivation led to abnormal elastin deposition, and inhibition of Cdc42 activity disturbed the directional migration of myofibroblasts and disrupted elastin localization. Most importantly, the EGFR inhibitor erlotinib partially rescued LOX overactivation and Cdc42 activity inhibition, and improved elastin deposition and alveolar development in antenatal LPS-treated rats. Taken together, our data suggest that TGF-α/EGFR signaling is critically involved in the regulation of elastin deposition and represents a novel therapeutic target.
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Affiliation(s)
- Jianhui Li
- Department of Neonatology, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, 355 Lu Ding Road, 200062, Shanghai, China.
| | - Jian Cao
- Department of Respiratory Medicine, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, 355 Lu Ding Road, 200062, Shanghai, China
| | - Chongbing Yan
- Department of Neonatology, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, 355 Lu Ding Road, 200062, Shanghai, China
| | - Xiaohui Gong
- Department of Neonatology, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, 355 Lu Ding Road, 200062, Shanghai, China.
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Zhang F, Wang M, Li Z, Deng J, Fan Y, Gou Z, Zhou Y, Huang L, Lu L. Rapamycin attenuates pyroptosis by suppressing mTOR phosphorylation and promoting autophagy in LPS-induced bronchopulmonary dysplasia. Exp Lung Res 2023; 49:178-192. [PMID: 37874145 DOI: 10.1080/01902148.2023.2266236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Accepted: 09/27/2023] [Indexed: 10/25/2023]
Abstract
PURPOSE/AIM Bronchopulmonary dysplasia (BPD) is associated with poor survival in preterm infants. Intrauterine infection can aggravate the degree of obstruction of alveolar development in premature infants; however, the pathogenic mechanism remains unclear. In this study, we sought to determine whether pyroptosis could be inhibited by downregulating mammalian target of rapamycin (mTOR) activation and inducing autophagy in BPD-affected lung tissue. MATERIALS AND METHODS We established a neonatal rat model of BPD induced by intrauterine infection via intraperitoneally injecting pregnant rats with lipopolysaccharide (LPS). Subsequently, mTOR levels and pyroptosis were evaluated using immunohistochemistry, immunofluorescence, TUNEL staining, and western blotting. The Shapiro-Wilk test was employed to assess the normality of the experimental data. Unpaired t-tests were used to compare the means between two groups, and comparisons between multiple groups were performed using analysis of variance. RESULTS Pyroptosis of lung epithelial cells increased in BPD lung tissues. After administering an mTOR phosphorylation inhibitor (rapamycin) to neonatal rats with BPD, the level of autophagy increased, while the expression of autophagy cargo adaptors, LC3 and p62, did not differ. Following rapamycin treatment, NLRP3, Pro-caspase-1, caspase-1, pro-IL-1β, IL-1β, IL-18/Pro-IL-18, N-GSDMD/GSDMD, Pro-caspase-11, and caspase-11 were negatively regulated in BPD lung tissues. The opposite results were observed after treatment with the autophagy inhibitor MHY1485, showing an increase in pyroptosis and a significant decrease in the number of alveoli in BPD. CONCLUSIONS Rapamycin reduces pyroptosis in neonatal rats with LPS-induced BPD by inhibiting mTOR phosphorylation and inducing autophagy; hence, it may represent a potential therapeutic for treating BPD.
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Affiliation(s)
- Feng Zhang
- Department of Pediatrics, The First Affiliated Hospital, Chengdu Medical College, Chengdu, Sichuan Province, P.R. China
- Clinic Medical College, Chengdu Medical College, Chengdu, Sichuan Province, P.R. China
| | - Minrong Wang
- Department of Pediatrics, The First Affiliated Hospital, Chengdu Medical College, Chengdu, Sichuan Province, P.R. China
- Clinic Medical College, Chengdu Medical College, Chengdu, Sichuan Province, P.R. China
| | - Zhongni Li
- Department of Pediatrics, The First Affiliated Hospital, Chengdu Medical College, Chengdu, Sichuan Province, P.R. China
- Clinic Medical College, Chengdu Medical College, Chengdu, Sichuan Province, P.R. China
| | - Jiehong Deng
- Department of Pediatrics, The First Affiliated Hospital, Chengdu Medical College, Chengdu, Sichuan Province, P.R. China
- Clinic Medical College, Chengdu Medical College, Chengdu, Sichuan Province, P.R. China
| | - Yang Fan
- Department of Pediatrics, The First Affiliated Hospital, Chengdu Medical College, Chengdu, Sichuan Province, P.R. China
| | - Zhixian Gou
- Department of Pediatrics, The First Affiliated Hospital, Chengdu Medical College, Chengdu, Sichuan Province, P.R. China
| | - Yue Zhou
- Department of Pediatrics, The First Affiliated Hospital, Chengdu Medical College, Chengdu, Sichuan Province, P.R. China
| | - Li Huang
- Department of Pediatrics, The First Affiliated Hospital, Chengdu Medical College, Chengdu, Sichuan Province, P.R. China
| | - Liqun Lu
- Department of Pediatrics, The First Affiliated Hospital, Chengdu Medical College, Chengdu, Sichuan Province, P.R. China
- Clinic Medical College, Chengdu Medical College, Chengdu, Sichuan Province, P.R. China
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Hu J, Wu Z, Wang H, Geng H, Huo J, Zhu X, Zhu X. Vitamin D Ameliorates Apoptosis and Inflammation by Targeting the Mitochondrial and MEK1/2-ERK1/2 Pathways in Hyperoxia-Induced Bronchopulmonary Dysplasia. J Inflamm Res 2022; 15:4891-4906. [PMID: 36046664 PMCID: PMC9423049 DOI: 10.2147/jir.s371906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 08/16/2022] [Indexed: 12/11/2022] Open
Abstract
Purpose Bronchopulmonary dysplasia (BPD) is a common and severe complication in preterm infants. Vitamin D (VitD) has been reported to protect against BPD; however, its role in the mitochondria-mediated and MEK1/2-ERK1/2 pathways has not yet been reported. Methods We first performed in vivo studies using neonatal C57BL/6 mice in which we induced BPD by exposing them to a hyperoxic environment (85% O2). The mice were divided into room air (RA; 21% O2), RA+VitD, BPD, and BPD+VitD groups. Hematoxylin and eosin and Masson’s trichrome staining were used to evaluate lung injury. Inflammation and apoptosis were measured using ELISA, RT-qPCR, and TUNEL assays. We then analyzed BEAS-2B cells divided into the same groups along with an additional BPD+VitD+inhibitor group. Mitochondrial apoptosis was evaluated by transmission electron microscopy, mitochondrial membrane potential, and Western blotting. We then used VDR-shRNA to silence the Vitamin D Receptor (VDR) in the BEAS-2B cells. The inflammation, apoptotic rate, and the phosphorylated forms of MEK1/2 and ERK1/2 in cells were detected by RT-qPCR, flow cytometry, and Western blotting. Results The mean linear intercept, septal thickness, and abnormal fibrosis increased, while radial alveolar count decreased in BPD lungs compared to RA lungs. VitD administration was able to ameliorate the phenotype in BPD lungs. IL-6, IFN-γ, and TNF-α expression and the apoptotic rate decreased in the BPD+VitD lung group. VitD pretreatment restored abnormal mitochondrial morphology, reduced mitochondrial membrane loss, and reduced the expression of cleaved caspase-3, Bax, and Bcl-2 in BEAS-2B cells. VitD administration also reduced IL-6, IFN-γ, and TNF-α mRNA, as well as pMEK1/2 and pERK1/2 expression and apoptosis rate in cells exposed to hyperoxia. Conclusion We concluded that VitD treatment ameliorated apoptosis and inflammation by targeting the mitochondrial pathway and via the MEK1/2-ERK1/2 signaling pathway in BPD, thus supporting its potential therapeutic use in this condition.
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Affiliation(s)
- Jinhui Hu
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, People's Republic of China.,Neonatal Medical Center, Huai'an Maternity and Child Health Care Hospital, Xuzhou Medical University, Huai'an, People's Republic of China
| | - Zhixin Wu
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Huawei Wang
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Haifeng Geng
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Jie Huo
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, People's Republic of China.,Department of Neonatology, Yangzhou Maternity and Child Health Care Hospital, Yangzhou, People's Republic of China
| | - Xueping Zhu
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Xiaoli Zhu
- Department of Intervention, The First Affiliated Hospital of Soochow University, Suzhou, People's Republic of China
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Schmitt AK, Puppa MA, Wessels I, Rink L. Vitamin D3 and zinc synergistically induce regulatory T cells and suppress interferon-γ production in mixed lymphocyte culture. J Nutr Biochem 2022; 102:108942. [DOI: 10.1016/j.jnutbio.2022.108942] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 11/29/2021] [Accepted: 12/07/2021] [Indexed: 12/21/2022]
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Zhen H, Hu H, Rong G, Huang X, Tan C, Yu X. VitA or VitD ameliorates bronchopulmonary dysplasia by regulating the balance between M1 and M2 macrophages. Biomed Pharmacother 2021; 141:111836. [PMID: 34214728 DOI: 10.1016/j.biopha.2021.111836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 06/14/2021] [Accepted: 06/14/2021] [Indexed: 11/19/2022] Open
Abstract
PURPOSE To investigate the therapeutic effects of vitamin A (VitA) or vitamin D (VitD) against bronchopulmonary dysplasia (BPD) and the underlying mechanism from the perspective of macrophage polarization. METHODS A BPD model was established on rats. Hematoxylin and eosin staining was used to evaluate the pathological state of lung tissues. The expression of CD68 was determined by immunohistochemistry assay. The infiltration of M1 and M2 macrophages was marked by immunofluorescence. The expression levels of tumor necrosis factor (TNF)-α, interleukin (IL)-10, nitric oxide synthase (NOS), and arginase-1 (Arg-1) were evaluated by quantitative reverse transcription polymerase chain reaction assay, and the ratio of M1/M2 in the bronchoalveolar lavage fluid was determined by flow cytometry. RESULTS Disordered alveolar structure in the lung tissue, thickened alveolar septa, and infiltration of inflammatory cells around the alveolar cavity and pulmonary septa were observed in lipopolysaccharide (LPS)-treated rats. On day 21 post-natal (PN21), the pathological state was aggravated, alveolar simplification was observed, and the expression level of CD68 in the lung tissues was significantly elevated, and these results were dramatically alleviated in the VitA, VitD, and VitA+VitD groups. However, no significant synergistic effect was observed between VitA+VitD and VitA or VitD groups. After the administration with VitA or VitD, IL-10 and Arg-1 were up-regulated on PN10. TNF-α and NOS were up-regulated on PN21. The ratio of macrophage polarization and M2 macrophages increased considerably after the stimulation with LPS, and this result was significantly reversed by VitA or VitD. A significant difference was observed on the effect of different dosages of VitA or VitD on macrophage polarization, among which moderate dosages of VitA or VitD exerted the most significant influence on macrophage polarization. CONCLUSION The BPD-linked pulmonary injury stimulated by LPS can be ameliorated by the introduction of VitA or VitD.
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Affiliation(s)
- Hong Zhen
- Department of Pediatrics, Langdong Hospital of Guangxi Medical University, No 60 Jinhu Road, Qingxiu district, Nanning city, Guangxi Zhuang Autonomous Region, China.
| | - Hongbo Hu
- Department of Pediatrics, Langdong Hospital of Guangxi Medical University, No 60 Jinhu Road, Qingxiu district, Nanning city, Guangxi Zhuang Autonomous Region, China
| | - Guojie Rong
- Department of Pediatrics, Langdong Hospital of Guangxi Medical University, No 60 Jinhu Road, Qingxiu district, Nanning city, Guangxi Zhuang Autonomous Region, China
| | - Xiuxiu Huang
- Department of Pediatrics, Langdong Hospital of Guangxi Medical University, No 60 Jinhu Road, Qingxiu district, Nanning city, Guangxi Zhuang Autonomous Region, China
| | - Chang Tan
- Department of Pediatrics, Langdong Hospital of Guangxi Medical University, No 60 Jinhu Road, Qingxiu district, Nanning city, Guangxi Zhuang Autonomous Region, China
| | - Xinyuan Yu
- Department of Pediatrics, Langdong Hospital of Guangxi Medical University, No 60 Jinhu Road, Qingxiu district, Nanning city, Guangxi Zhuang Autonomous Region, China
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Zhang X, Luo K, He X, Chen P. Association of vitamin D status at birth with pulmonary disease morbidity in very preterm infants. Pediatr Pulmonol 2021; 56:1215-1220. [PMID: 33331677 DOI: 10.1002/ppul.25233] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 11/17/2020] [Accepted: 12/12/2020] [Indexed: 12/17/2022]
Abstract
OBJECTIVE We aimed to assess whether serum 25-hydroxyvitamin D (25(OH)D) levels at birth are associated with pulmonary disease morbidities in very preterm infants. METHODS This prospective cohort analysis included 93 infants born before 32 weeks of gestation in the Second Xiangya Hospital of Central South University between March 2016 and February 2017. Participants were classified into three groups according to their 25(OH)D levels at birth. The groups were compared in terms of demographic variables and pulmonary disease morbidities. RESULTS The mean serum 25(OH)D level at birth was 35.7 ± 19.1 nmol/L, and 38 (40.9%), 31 (33.3%), and 24 (25.8%) infants had 25(OH)D levels of less than 25 nmol/L, 25-50 nmol/L, and more than or equal to 50 nmol/L, respectively. There was a statistically significant difference in neonatal respiratory distress syndrome (RDS) rates among the three groups (43.6% vs. 35.9% vs. 20.5%, p = .029). The rates of bronchopulmonary dysplasia, apnea, respiratory failure, persistent pulmonary hypertension, and pulmonary hemorrhage did not differ significantly among the groups. Logistic analysis, adjusted for gestational age and birth weight, showed that a low serum 25(OH)D level (<50 nmol/L) was a risk factor for RDS (odds ratio, 0.195; p = .017). CONCLUSION There was a high prevalence of low 25(OH)D levels (<50 nmol/L) and an association between vitamin D status and RDS in very preterm infants. However, more research on this association is required.
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Affiliation(s)
- Xuefei Zhang
- Division of Neonatology, Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Laboratory of Neonatal Disease, Institute of Pediatrics, Central South University, Changsha, Hunan, China
| | - Kaiju Luo
- Division of Neonatology, Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Laboratory of Neonatal Disease, Institute of Pediatrics, Central South University, Changsha, Hunan, China
| | - Xiaori He
- Division of Neonatology, Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Laboratory of Neonatal Disease, Institute of Pediatrics, Central South University, Changsha, Hunan, China
| | - Pingyang Chen
- Division of Neonatology, Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.,Laboratory of Neonatal Disease, Institute of Pediatrics, Central South University, Changsha, Hunan, China
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Chen D, Gao ZQ, Wang YY, Wan BB, Liu G, Chen JL, Wu YX, Zhou Q, Jiang SY, Yu RQ, Pang QF. Sodium Propionate Enhances Nrf2-Mediated Protective Defense Against Oxidative Stress and Inflammation in Lipopolysaccharide-Induced Neonatal Mice. J Inflamm Res 2021; 14:803-816. [PMID: 33732006 PMCID: PMC7957230 DOI: 10.2147/jir.s303105] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 02/23/2021] [Indexed: 12/27/2022] Open
Abstract
Background Alveolar arrest and the impaired angiogenesis caused by chronic inflammation and oxidative stress are two main factors in bronchopulmonary dysplasia (BPD). Short-chain fatty acids (SCFAs), especially propionate, possess anti-oxidant and anti-inflammatory effects. The present study was designed to examine the roles of sodium propionate (SP) on lipopolysaccharide (LPS)-challenged BPD and its potential mechanisms. Methods WT, Nrf2-/- mice and pulmonary microvascular endothelial cells (HPMECs) were used in this study. LPS was performed to mimic BPD model both in vivo and vitro. Lung histopathology, inflammation and oxidative stress-related mRNA expressions in lungs involved in BPD pathogenesis were investigated. In addition, cell viability and angiogenesis were also tested. Results The increased nuclear factor erythroid 2-related factor (Nrf2) and decreased Kelch-like ECH-associated protein-1 (Keap-1) expressions were observed after SP treatment in the LPS-induced neonatal mouse model of BPD. In LPS-induced wild-type but not Nrf2-/- neonatal mice, SP reduced pulmonary inflammation and oxidative stress and exhibited obvious pathological alterations of the alveoli. Moreover, in LPS-evoked HPMECs, SP accelerated Nrf2 nuclear translocation presented and exhibited cytoprotective and pro-angiogenesis effects. In addition, SP diminished the LPS-induced inflammatory response by blocking the activation of nuclear factor-kappa B pathway. Moreover, pretreatment with ML385, an Nrf2 specific inhibitor, offsets the beneficial effects of SP on inflammation, oxidative stress and angiogenesis in LPS-evoked HPMECs. Conclusion SP protects against LPS-induced lung alveolar simplification and abnormal angiogenesis in neonatal mice and HPMECs in an Nrf2-dependent manner.
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Affiliation(s)
- Dan Chen
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Zhi-Qi Gao
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Ying-Ying Wang
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Bin-Bin Wan
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Gang Liu
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Jun-Liang Chen
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Ya-Xian Wu
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Qin Zhou
- Department of Neonatology, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi, 214002, Jiangsu Province, People's Republic of China
| | - Shan-Yu Jiang
- Department of Neonatology, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi, 214002, Jiangsu Province, People's Republic of China
| | - Ren-Qiang Yu
- Department of Neonatology, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi, 214002, Jiangsu Province, People's Republic of China
| | - Qing-Feng Pang
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
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Chen Z, Xie X, Jiang N, Li J, Shen L, Zhang Y. CCR5 signaling promotes lipopolysaccharide-induced macrophage recruitment and alveolar developmental arrest. Cell Death Dis 2021; 12:184. [PMID: 33589608 PMCID: PMC7883330 DOI: 10.1038/s41419-021-03464-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 01/17/2021] [Accepted: 01/21/2021] [Indexed: 02/07/2023]
Abstract
The pathogenesis of bronchopulmonary dysplasia (BPD), involves inflammatory, mechanisms that are not fully characterized. Here we report that overexpression of C-C chemokine receptor 5 (CCR5) and its ligands is associated with BPD development. Lipopolysaccharide-induced BPD rats have increased CCR5 and interleukin-1β (IL-1β) levels, and decreased alveolarization, while CCR5 or IL-1β receptor antagonist treatments decreased inflammation and increased alveolarization. CCR5 enhances macrophage migration, macrophage infiltration in the lungs, IL-1β levels, lysyl oxidase activity, and alveolar development arrest. CCR5 expression on monocytes, and its ligands in blood samples from BPD infants, are elevated. Furthermore, batyl alcohol supplementation reduced CCR5 expression and IL-1β production in lipopolysaccharide-exposed rat lungs. Moreover, receptor-interacting kinase 3 (RIP3) upstream regulator of CCR5-cultured RIP3−/− macrophages exhibited partly blocked lipopolysaccharide-induced CCR5 expression. We conclude that increased CCR5 expression is a key mechanism in BPD development and represents a novel therapeutic target for treatment.
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Affiliation(s)
- Ze Chen
- Department of Neonatology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kong Jiang Road, 200092, Shanghai, China
| | - Xiaohua Xie
- Department of Neonatology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kong Jiang Road, 200092, Shanghai, China
| | - Na Jiang
- Department of Neonatology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kong Jiang Road, 200092, Shanghai, China
| | - Jianhui Li
- Department of Neonatology, Shanghai Children's Hospital, Shanghai Jiao Tong University, 355 Lu Ding Road, 200062, Shanghai, China
| | - Lei Shen
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Building No. 5(West Area), No. 280 South Chongqing Road, 200025, Shanghai, China.
| | - Yongjun Zhang
- Department of Neonatology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kong Jiang Road, 200092, Shanghai, China.
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Tissue-Resident Type 2 Innate Lymphoid Cells Arrest Alveolarization in Bronchopulmonary Dysplasia. J Immunol Res 2020; 2020:8050186. [PMID: 33178840 PMCID: PMC7648679 DOI: 10.1155/2020/8050186] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 09/09/2020] [Accepted: 10/09/2020] [Indexed: 12/12/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a severe complication of the respiratory system associated with preterm birth. Type 2 innate lymphoid cells (ILC2s) play a major role in tissue homeostasis, inflammation, and wound healing. However, the role in BPD remains unclear. The present study showed that ILC2s, interleukin-4 (IL-4), IL-13, and anti-inflammatory (M2) macrophages increased significantly in BPD mice as compared to the control mice. Administration with recombinant mouse IL-33 amplified the above phenomena and aggravated the alveolar structural disorder and functional injury in mice subjected to BPD, and the opposite was true with anti-ST2 antibody. In addition, the depletion of ILC2s in BPD mice with anti-CD90.2 antibody substantially abolished the destructive effect on BPD. In the treatment of BPD with dexamethasone, the number of ILC2s and M2 macrophages and levels of IL-4 and IL-13 decreased with remission as compared to the control group. This study identified a major destructive role of the ILC2s in BPD that could be attenuated as a therapeutic strategy.
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Park HW, Lim G, Park YM, Chang M, Son JS, Lee R. Association between vitamin D level and bronchopulmonary dysplasia: A systematic review and meta-analysis. PLoS One 2020; 15:e0235332. [PMID: 32628705 PMCID: PMC7337306 DOI: 10.1371/journal.pone.0235332] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 06/14/2020] [Indexed: 12/14/2022] Open
Abstract
Neonatal vitamin D deficiency is common and is associated with development of pulmonary disease in children and adults. While the role of vitamin D in normal lung development is well established, the association between vitamin D deficiency and bronchopulmonary dysplasia (BPD) remains unclear. The present meta-analysis was conducted to evaluate the relationship between vitamin D and BPD. We identified relevant studies (n = 8) using the PubMed, EMBASE, Cochrane Library, and KoreaMed databases and applied the Newcastle–Ottawa Scale to assess the methodological components of each study, and used I2 statistic to evaluate heterogeneity. Comprehensive Meta-Analysis software version 3.3 was used for the statistical analysis. A total of 909 infants were included, of whom 251 (27.6%) were diagnosed with BPD. We found that both vitamin D deficiency at birth (four studies; OR 2.405; 95% CI 1.269 to 4.560; p = 0.007) and low levels of vitamin D at birth (four studies; standardized mean difference -1.463; 95% CI -2.900 to -0.027; p = 0.046) were associated with BPD. The compiled data suggest that antenatal vitamin D deficiency and low vitamin D levels are associated with neonatal BPD.
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Affiliation(s)
- Hye Won Park
- Department of Pediatrics, Konkuk University Medical Center, Seoul, Republic of Korea
- Konkuk University School of Medicine, Seoul, Republic of Korea
- * E-mail:
| | - Gina Lim
- Department of Pediatrics, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Yong-Mean Park
- Department of Pediatrics, Konkuk University Medical Center, Seoul, Republic of Korea
- Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Misoo Chang
- Research Coordinating Center, Konkuk University Medical Center, Seoul, Republic of Korea
| | - Jae Sung Son
- Department of Pediatrics, Konkuk University Medical Center, Seoul, Republic of Korea
- Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Ran Lee
- Department of Pediatrics, Konkuk University Medical Center, Seoul, Republic of Korea
- Konkuk University School of Medicine, Seoul, Republic of Korea
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12
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Gangisetty O, Palagani A, Sarkar DK. Transgenerational inheritance of fetal alcohol exposure adverse effects on immune gene interferon-ϒ. Clin Epigenetics 2020; 12:70. [PMID: 32448218 PMCID: PMC7245772 DOI: 10.1186/s13148-020-00859-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 05/12/2020] [Indexed: 11/16/2022] Open
Abstract
Background Alcohol exposures in utero have been shown to alter immune system functions in the offspring which persists into adulthood. However, it is not apparent why the in utero alcohol effect on the immune system persists into adulthood of fetal alcohol-exposed offspring. The objective of this study was to determine the long-term effects of fetal alcohol exposure on the production of interferon-ϒ (IFN-ϒ), a cytokine known to regulate both innate and adaptive immunity. Methods Isogenic Fisher 344 rats were bred to produce pregnant dams, which were fed with a liquid diet containing 6.7% alcohol between gestation days 7 and 21 and pair-fed with an isocaloric liquid diet or fed ad libitum with rat chow; their male and female offspring were used for the study. F1-F3 generation rats were used when they were 2 to 3 months old. Fetal alcohol exposure effects on the Ifn-ɣ gene was determined by measuring the gene promoter methylation and mRNA and protein expression in the spleen. Additionally, transgenerational studies were conducted to evaluate the germline-transmitted effects of fetal alcohol exposure on the Ifn-ɣ gene. Results Fetal alcohol exposure reduced the expression of Ifn-ɣ mRNA and IFN-ϒ protein while it increased the proximal promoter methylation of the Ifn-ɣ gene in both male and female offspring during the adult period. Transgenerational studies revealed that the reduced levels of Ifn-ɣ expression and increased levels of its promoter methylation persisted only in F2 and F3 generation males derived from the male germ line. Conclusion Overall, these findings provide the evidence that fetal alcohol exposures produce an epigenetic mark on the Ifn-ɣ gene that passes through multiple generations via the male germ line. These data provide the first evidence that the male germ line transmits fetal alcohol exposure's adverse effects on the immune system.
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Affiliation(s)
- Omkaram Gangisetty
- Rutgers Endocrine Research Program, Department of Animal Sciences, Rutgers University, 67 Poultry Farm Lane, New Brunswick, NJ, 08901, USA
| | - Ajay Palagani
- Rutgers Endocrine Research Program, Department of Animal Sciences, Rutgers University, 67 Poultry Farm Lane, New Brunswick, NJ, 08901, USA
| | - Dipak K Sarkar
- Rutgers Endocrine Research Program, Department of Animal Sciences, Rutgers University, 67 Poultry Farm Lane, New Brunswick, NJ, 08901, USA.
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13
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Chen C, Weng H, Zhang X, Wang S, Lu C, Jin H, Chen S, Liu Y, Sheng A, Sun Y. Low-Dose Vitamin D Protects Hyperoxia-Induced Bronchopulmonary Dysplasia by Inhibiting Neutrophil Extracellular Traps. Front Pediatr 2020; 8:335. [PMID: 32719755 PMCID: PMC7347751 DOI: 10.3389/fped.2020.00335] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 05/21/2020] [Indexed: 12/14/2022] Open
Abstract
Background and Objective: As bronchopulmonary dysplasia (BPD) can lead to considerable mortality and morbidity, this disease is the focus of attention in neonatology. Vitamin D (VD), which has anti-inflammatory properties and promotes lung growth, may have a therapeutic effect on BPD. The overexpression of neutrophil extracellular traps (NETs) has been demonstrated to be involved in the pathogenesis of BPD in our previous study. This study aimed to elucidate the effect of VD on BPD and the role of NETs in this process. Methods: Newborn rats were exposed to 90% oxygen continuously for 7 days to mimic BPD, and rats under hyperoxia were injected with 1,25(OH)2D3 at different doses (0.5 ng/g, 3 ng/g). Alveolarization, pulmonary vascular development, inflammatory cytokines and NETs were assessed. Results: Hyperoxia increased mortality, decreased body weight, impaired alveolarization with a decrease in radial alveolar count (RAC) and an increase in mean linear intercept (MLI), and impaired vascular development with low vascular endothelial growth factor (VEGF) expression. Meanwhile, hyperoxia enhanced expression of the proinflammatory factors TNF-α, IL-1β, and IL-6, and elevated NETs in lung tissues and plasma. Low-dose VD (0.5 ng/g) administration increased the survival rate, attenuated developmental retardation, improved alveolarization, and pulmonary vascular development in hyperoxia-induced BPD, and reduced the expression of proinflammatory factors and NETs. However, high-dose VD (3 ng/g) treatment did not attenuate lung injury or NETs significantly, and even led to more severe developmental retardation and a higher mortality rate. Conclusions: Low-dose VD increased the survival rate, attenuated developmental retardation, and improved alveolarization and pulmonary vascularization arrest in hyperoxia-induced BPD partially by inhibiting NETs.
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Affiliation(s)
- Cuie Chen
- Department of Neonatology, Yiwu Maternity and Children Health Care Hospital, Jinhua, China
| | - Huachun Weng
- Chinese-American Research Institute for Pediatrics & Department of Pediatrics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xixi Zhang
- Department of Pediatrics, Yuhuan People's Hospital, Taizhou, China
| | - Shi Wang
- Department of Anesthesiology, Women's Hospital School of Medicine Zhejiang University, Hangzhou, China
| | - Chaosheng Lu
- Department of Pediatrics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Hongxing Jin
- Department of Neonatology, Yiwu Maternity and Children Health Care Hospital, Jinhua, China
| | - Shujun Chen
- Department of Neonatology, Yiwu Maternity and Children Health Care Hospital, Jinhua, China
| | - Yuanyuan Liu
- Department of Pediatrics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Anqun Sheng
- Department of Pediatrics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yuanyuan Sun
- Department of Pediatrics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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14
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Huang GQ, Cheng HR, Wu YM, Cheng QQ, Wang YM, Fu JL, Zhou HX, Wang Z. Reduced Vitamin D Levels are Associated with Stroke-Associated Pneumonia in Patients with Acute Ischemic Stroke. Clin Interv Aging 2019; 14:2305-2314. [PMID: 32021127 PMCID: PMC6946633 DOI: 10.2147/cia.s230255] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 12/17/2019] [Indexed: 12/13/2022] Open
Abstract
Background and aim Stroke-associated pneumonia (SAP) is a common complication in patients with acute ischemic stroke (AIS). This study explored the potential relationship between serum vitamin D levels and SAP. Methods This study recruited 863 consecutive AIS patients. In-hospital SAP was defined as a complication that occurred after stroke, during hospitalization, that was confirmed radiographically. Serum vitamin D levels were measured within 24 hrs of admission and the patients were divided into vitamin D sufficient (>50 nmol/L), insufficient (25–50 nmol/L), and deficient (<25 nmol/L) groups. Results In this study, 102 (11.8%) patients were diagnosed with SAP. Compared to the patients without SAP, patients with SAP had significantly lower vitamin D levels (P = 0.023). The incidence of SAP was significantly higher in patients with vitamin D deficiency than in those with vitamin D insufficiency or sufficiency (21.2% vs 16.2% & 9.5%, P = 0.006). After adjusting for confounders, vitamin D deficiency and insufficiency were independently associated with SAP (OR = 3.034, 95% CI = 1.207–7.625, P = 0.018; OR = 1.921, 95% CI = 1.204–3.066, P = 0.006, respectively). In multiple-adjusted spline regression, vitamin D levels showed a linear association with the risk of SAP (P < 0.001 for linearity). Conclusion Reduced vitamin D is a potential risk factor of in-hospital SAP, which can help clinicians identify high-risk SAP patients.
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Affiliation(s)
- Gui-Qian Huang
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, People's Republic of China
| | - Hao-Ran Cheng
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, People's Republic of China
| | - Yue-Min Wu
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, People's Republic of China
| | - Qian-Qian Cheng
- School of Mental Health, Wenzhou Medical University, Wenzhou 325000, Zhejiang, People's Republic of China
| | - Yu-Min Wang
- Department of Laboratory Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, People's Republic of China
| | - Jia-Li Fu
- Department of Laboratory Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, People's Republic of China
| | - Hui-Xin Zhou
- Department of Laboratory Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, People's Republic of China
| | - Zhen Wang
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, People's Republic of China
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15
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The Utility of Comprehensive Metabolic Panel Tests for the Prediction of Bronchopulmonary Dysplasia in Extremely Premature Infants. DISEASE MARKERS 2019; 2019:5681954. [PMID: 31772691 PMCID: PMC6854975 DOI: 10.1155/2019/5681954] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 09/05/2019] [Indexed: 12/12/2022]
Abstract
Background Comprehensive metabolic panel tests (CMP) are routinely performed in extremely premature infants within the first days of life. The association between the parameters of first postnatal CMP and the risk of bronchopulmonary dysplasia (BPD) remains elusive. Methods A retrospective analysis was performed to evaluate the correlation between the parameters of first postnatal CMP and the risk of BPD in a cohort of extremely premature infants (born with a gestational age less than 28 weeks or a birth weight less than 1000 grams) at the neonatal intensive care unit, Shenzhen Maternity and Child Healthcare Hospital, from January 2016 to October 2018. A multivariant regression model was built to assess the association of the first postnatal CMP with the development of BPD. Results A total of 256 extremely premature infants were included in this study. BPD developed in 76 (29.7%) infants. The first CMP in these infants was performed at 5 to 8 days after birth. The levels of blood urea nitrogen (BUN) and magnesium were significantly higher in infants with BPD compared to infants with no BPD (10.2 versus 7.5 mmol/L, P < 0.001 and 0.9 versus 0.8 U/L, P = 0.001, respectively) whereas the level of alkaline phosphatase (ALP) and total protein was significantly lower in infants with BPD (215.5 versus 310.0 U/L, P = 0.002 and 41.2 versus 42.9 g/L, P = 0.037, respectively). Multiple analysis showed that a higher level of BUN (>8.18 mmol/L) was independently associated with BPD (OR 3.261, 95% CI 1.779-5.978). Conclusion Our findings indicate that a higher postnatal BUN level (>8.18 mmol/L) may be a predictor for the development of BPD in extremely premature infants.
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16
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Lignelli E, Palumbo F, Myti D, Morty RE. Recent advances in our understanding of the mechanisms of lung alveolarization and bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2019; 317:L832-L887. [PMID: 31596603 DOI: 10.1152/ajplung.00369.2019] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is the most common cause of morbidity and mortality in preterm infants. A key histopathological feature of BPD is stunted late lung development, where the process of alveolarization-the generation of alveolar gas exchange units-is impeded, through mechanisms that remain largely unclear. As such, there is interest in the clarification both of the pathomechanisms at play in affected lungs, and the mechanisms of de novo alveoli generation in healthy, developing lungs. A better understanding of normal and pathological alveolarization might reveal opportunities for improved medical management of affected infants. Furthermore, disturbances to the alveolar architecture are a key histopathological feature of several adult chronic lung diseases, including emphysema and fibrosis, and it is envisaged that knowledge about the mechanisms of alveologenesis might facilitate regeneration of healthy lung parenchyma in affected patients. To this end, recent efforts have interrogated clinical data, developed new-and refined existing-in vivo and in vitro models of BPD, have applied new microscopic and radiographic approaches, and have developed advanced cell-culture approaches, including organoid generation. Advances have also been made in the development of other methodologies, including single-cell analysis, metabolomics, lipidomics, and proteomics, as well as the generation and use of complex mouse genetics tools. The objective of this review is to present advances made in our understanding of the mechanisms of lung alveolarization and BPD over the period 1 January 2017-30 June 2019, a period that spans the 50th anniversary of the original clinical description of BPD in preterm infants.
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Affiliation(s)
- Ettore Lignelli
- Department of Lung Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, member of the German Center for Lung Research, Giessen, Germany
| | - Francesco Palumbo
- Department of Lung Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, member of the German Center for Lung Research, Giessen, Germany
| | - Despoina Myti
- Department of Lung Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, member of the German Center for Lung Research, Giessen, Germany
| | - Rory E Morty
- Department of Lung Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, member of the German Center for Lung Research, Giessen, Germany
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17
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Chen H, Chen X, Chen J, Zhao H, Wang B, Zheng W, Lü J, Du J. [Protective effect of vitamin D against hyperoxia-induced bronchopulmonary dysplasia in newborn mice]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2019; 39:816-822. [PMID: 31340915 DOI: 10.12122/j.issn.1673-4254.2019.07.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the protective effect of vitamin D (VD) against hyperoxia-induced bronchopulmonary dysplasia (BPD) in newborn mice and explore the mechanism. METHODS Thirty-six newborn mice were randomly divided into air + VD group, air + saline group, hyperoxia + VD group, and hyperoxia + saline group. In all the groups, saline or VD was administered on a daily basis via intramuscular injection. After 3 weeks of treatment, the mice were weighed and cardiac blood was collected for measurement of serum VD level using ELISA, and histological examination of the lungs was performed. Radial alveolar counting (RAC) and alveolar secondary interval volume density were measured using image analysis software. The expression levels of vascular endothelial cell growth factor (VEGF) and VEGF receptor 2 (VEGFR2) in the lung tissues were detected using Western blotting. RESULTS The weight gain rate of the mice and the weight of the lungs were significantly higher in air + saline group and air + VD group than in the hyperoxia + saline group. The RAC was significantly lower in hyperoxic+saline group than that in hyperoxia+VD group (P < 0.001), and was significantly higher in hyperoxic+VD (125 times) than in hyperoxia + VD (1250 times) group (P < 0.01). The alveolar secondary protrusion count was significantly higher in hyperoxic+VD (1250 times) group than in hyperoxic+saline group (P < 0.001), and was significantly higher in hyperoxia+VD (125 times) group than in hyperoxia + VD (1250 times) group (P < 0.01). Compared with that in air + saline group, VEGFR2 expression was significantly lowered in hyperoxia+saline group (P < 0.05) and in air+VD group (P < 0.05); VEGFR2 expression was significantly higher in hyperoxia+VD (1250 times) group than in hyperoxia+saline group (P < 0.001) and hyperoxia+VD (125 times) group (P < 0.001); VEGFR2 expression was significantly higher in hyperoxia+VD (125 times) group than in hyperoxia+ saline group (P < 0.05). CONCLUSIONS In newborn mice with BPD, VD supplement can increase the weight of the lungs and promote lung maturation, and a higher concentration of VD can better protect the lungs and promote the growth of pulmonary blood vessels.
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Affiliation(s)
- Hui Chen
- Pediatrics Center, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Xinxin Chen
- Pediatrics Center, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Jianfeng Chen
- Pediatrics Center, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Hong Zhao
- Pediatrics Center, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Bin Wang
- Pediatrics Center, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Wei Zheng
- Pediatrics Center, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Juanjuan Lü
- Pediatrics Center, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Jiang Du
- Pediatrics Center, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
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18
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Naeem A, Ahmed I, Silveyra P. Bronchopulmonary Dysplasia: An Update on Experimental Therapeutics. EUROPEAN MEDICAL JOURNAL 2019. [DOI: 10.33590/emj/10313109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a chronic inflammatory lung disease that affects thousands of newborns and infants every year. Although it is accepted that BPD results from lung damage and inflammation triggered by mechanical ventilation and hyperoxia, the causes and molecular events leading to lung damage and arrested development remain unknown. While recent advances in neonatal care have improved the survival of very low-weight infants, the rates of BPD have not improved accordingly. This is mainly due to our limited understanding of the disease’s pathogenesis and the effective therapeutic options available. Current therapeutics for BPD involve ventilation management, steroid treatment, and administration of various agents, such as pulmonary surfactant, caffeine, vitamin A, nitric oxide, and stem cells. However, the efficacy of these agents in preventing and ameliorating BPD symptoms varies depending on the populations studied and the disease stage. As the field moves towards personalised therapeutic approaches, this review summarises clinical and experimental studies conducted in various models, aiming to increase understanding of the cellular and molecular mechanisms by which these agents can prevent or treat BPD. Due to the increasing number of extremely premature infants, it is imperative that we continue to work towards understanding the mechanisms of BPD pathogenesis and generating more effective therapeutic options.
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Affiliation(s)
- Anika Naeem
- Pulmonary Immunology and Physiology Laboratory (PIP), Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA
| | - Imtiaz Ahmed
- Pulmonary Immunology and Physiology Laboratory (PIP), Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA
| | - Patricia Silveyra
- Pulmonary Immunology and Physiology Laboratory (PIP), Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA
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19
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Naeem A, Ahmed I, Silveyra P. Bronchopulmonary Dysplasia: An Update on Experimental Therapeutics. EUROPEAN MEDICAL JOURNAL 2019; 4:20-29. [PMID: 31372499 PMCID: PMC6673641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a chronic inflammatory lung disease that affects thousands of newborns and infants every year. Although it is accepted that BPD results from lung damage and inflammation triggered by mechanical ventilation and hyperoxia, the causes and molecular events leading to lung damage and arrested development remain unknown. While recent advances in neonatal care have improved the survival of very low-weight infants, the rates of BPD have not improved accordingly. This is mainly due to our limited understanding of the disease's pathogenesis and the effective therapeutic options available. Current therapeutics for BPD involve ventilation management, steroid treatment, and administration of various agents, such as pulmonary surfactant, caffeine, vitamin A, nitric oxide, and stem cells. However, the efficacy of these agents in preventing and ameliorating BPD symptoms varies depending on the populations studied and the disease stage. As the field moves towards personalised therapeutic approaches, this review summarises clinical and experimental studies conducted in various models, aiming to increase understanding of the cellular and molecular mechanisms by which these agents can prevent or treat BPD. Due to the increasing number of extremely premature infants, it is imperative that we continue to work towards understanding the mechanisms of BPD pathogenesis and generating more effective therapeutic options.
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20
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Ideraabdullah FY, Belenchia AM, Rosenfeld CS, Kullman SW, Knuth M, Mahapatra D, Bereman M, Levin ED, Peterson CA. Maternal vitamin D deficiency and developmental origins of health and disease (DOHaD). J Endocrinol 2019; 241:JOE-18-0541.R2. [PMID: 30909167 PMCID: PMC6717694 DOI: 10.1530/joe-18-0541] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 03/19/2019] [Indexed: 12/14/2022]
Abstract
Vitamin D is an essential nutrient that is metabolized in the body to generate an active metabolite (1,25(OH)2D) with hormone-like activity and highly diverse roles in cellular function. Vitamin D deficiency (VDD) is a prevalent but easily preventable nutritional disturbance. Emerging evidence demonstrates the importance of sufficient vitamin D concentrations during fetal life with deficiencies leading to long-term effects into adulthood. Here, we provide a detailed review and perspective of evidence for the role of maternal VDD in offspring long term health, particularly as it relates to Developmental Origins of Health and Disease (DOHaD). We focus on roles in neurobehavioral and cardiometabolic disorders in humans and highlight recent findings from zebrafish and rodent models that probe potential mechanisms linking early life VDD to later life health outcomes. Moreover, we explore evidence implicating epigenetic mechanisms as a mediator of this link. Gaps in our current understanding of how maternal VDD might result in deleterious offspring outcomes later in life are also addressed.
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Affiliation(s)
- Folami Y. Ideraabdullah
- Department of Genetics, University of North Carolina School of Medicine, Chapel Hill, NC 27599
- Department of Nutrition, University of North Carolina School of Medicine, Chapel Hill, NC 27599
- Nutrition Research Institute, University of North Carolina School of Medicine, Chapel Hill, NC 27599
| | - Anthony M. Belenchia
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO 65211
| | - Cheryl S. Rosenfeld
- Department of Biomedical Sciences, University of Missouri, Columbia 65211
- Bond Life Sciences Center, University of Missouri, Columbia, MO 65211
- Thompson Center for Autism and Neurobehavioral Disorders, University of Missouri, Columbia, MO 65211
| | - Seth W. Kullman
- Toxicology Program, Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC 27695
| | - Megan Knuth
- Toxicology Program, Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695
| | - Debabrata Mahapatra
- Toxicology Program, Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695
| | - Michael Bereman
- Toxicology Program, Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC 27695
| | - Edward D. Levin
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC 27710
| | - Catherine A. Peterson
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO 65211
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21
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Loering S, Cameron GJM, Starkey MR, Hansbro PM. Lung development and emerging roles for type 2 immunity. J Pathol 2019; 247:686-696. [PMID: 30506724 DOI: 10.1002/path.5211] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/06/2018] [Accepted: 11/26/2018] [Indexed: 12/12/2022]
Abstract
Lung development is a complex process mediated through the interaction of multiple cell types, factors and mediators. In mice, it starts as early as embryonic day 9 and continues into early adulthood. The process can be separated into five different developmental stages: embryonic, pseudoglandular, canalicular, saccular, and alveolar. Whilst lung bud formation and branching morphogenesis have been studied extensively, the mechanisms of alveolarisation are incompletely understood. Aberrant lung development can lead to deleterious consequences for respiratory health such as bronchopulmonary dysplasia (BPD), a disease primarily affecting preterm neonates, which is characterised by increased pulmonary inflammation and disturbed alveolarisation. While the deleterious effects of type 1-mediated inflammatory responses on lung development have been well established, the role of type 2 responses in postnatal lung development remains poorly understood. Recent studies indicate that type 2-associated immune cells, such as group 2 innate lymphoid cells and alveolar macrophages, are increased in number during postnatal alveolarisation. Here, we present the current state of understanding of the postnatal stages of lung development and the key cell types and mediators known to be involved. We also provide an overview of how stem cells are involved in lung development and regeneration, and the negative influences of respiratory infections. Copyright © 2018 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Svenja Loering
- Priority Research Center's GrowUpWell and Healthy Lungs, School of Biomedical Sciences and Pharmacy, The University of Newcastle and Hunter Medical Research Institute, Newcastle, New South Wales, Australia
| | - Guy J M Cameron
- Priority Research Center's GrowUpWell and Healthy Lungs, School of Biomedical Sciences and Pharmacy, The University of Newcastle and Hunter Medical Research Institute, Newcastle, New South Wales, Australia
| | - Malcolm R Starkey
- Priority Research Center's GrowUpWell and Healthy Lungs, School of Biomedical Sciences and Pharmacy, The University of Newcastle and Hunter Medical Research Institute, Newcastle, New South Wales, Australia
| | - Philip M Hansbro
- Priority Research Center's GrowUpWell and Healthy Lungs, School of Biomedical Sciences and Pharmacy, The University of Newcastle and Hunter Medical Research Institute, Newcastle, New South Wales, Australia.,Center for Inflammation, Centenary Institute and The School of Life Sciences, University of Technology, Sydney, New South Wales, Australia
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