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Lavoie PM, Rayment JH. Genetics of bronchopulmonary dysplasia: An update. Semin Perinatol 2023; 47:151811. [PMID: 37775368 DOI: 10.1016/j.semperi.2023.151811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/01/2023]
Abstract
Bronchopulmonary dysplasia (BPD) is a multi-factorial disease that results from multiple clinical factors, including lung immaturity, mechanical ventilation, oxidative stress, pulmonary congestion due to increasing cardiac blood shunting, nutritional and immunological factors. Twin studies have indicated that susceptibility to BPD can be strongly inherited in some settings. Studies have reported associations between common genetic variants and BPD in preterm infants. Recent genomic studies have highlighted a potential role for molecular pathways involved in inflammation and lung development in affected infants. Rare mutations in genes encoding the lipid transporter ATP-binding cassette, sub-family A, member 3 (ABCA3 gene) which is involved in surfactant synthesis in alveolar type II cells, as well as surfactant protein B (SFTPB) and C (SFTPC) can also result in severe form of neonatal-onset interstitial lung diseases and may also potentially affect the course of BPD. This chapter summarizes the current state of knowledge on the genetics of BPD.
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Affiliation(s)
- Pascal M Lavoie
- Division of Neonatology, Department of Pediatrics, University of British Columbia, Vancouver, Canada; BC Children's Hospital Research Institute, Vancouver, Canada.
| | - Jonathan H Rayment
- BC Children's Hospital Research Institute, Vancouver, Canada; Division of Respiratory Medicine, Department of Pediatrics, University of British Columbia, Vancouver, Canada; Division of Respiratory Medicine, BC Children's Hospital, Vancouver, Canada
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Zhu Y, Mi L, Lu H, Ju H, Hao X, Xu S. ILC2 regulates hyperoxia-induced lung injury via an enhanced Th17 cell response in the BPD mouse model. BMC Pulm Med 2023; 23:188. [PMID: 37254088 DOI: 10.1186/s12890-023-02474-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 05/10/2023] [Indexed: 06/01/2023] Open
Abstract
BACKGROUD Recent research has focused on the role of immune cells and immune responses in the pathogenesis of bronchopulmonary dysplasia (BPD), but the exact mechanisms have not yet been elucidated. Previously, the key roles of type 2 innate lymphoid cells (ILC2) in the lung immune network of BPD were explored. Here, we investigated the role Th17 cell response in hyperoxia-induced lung injury of BPD, as well as the relationship between ILC2 and Th17 cell response. METHODS A hyperoxia-induced BPD mouse model was constructed and the pathologic changes of lung tissues were evaluated by Hematoxylin-Eosin staining. Flow cytometry analysis was conducted to determine the levels of Th17 cell, ILC2 and IL-6+ILC2. The expression levels of IL-6, IL-17 A, IL-17 F, and IL-22 in the blood serum and lung tissues of BPD mice were measured by ELISA. To further confirm the relationship between ILC2 and Th17 cell differentiation, ILC2 depletion was performed in BPD mice. Furthermore, we used immunomagnetic beads to enrich ILC2 and then flow-sorted mouse lung CD45+Lin-CD90.2+Sca-1+ILC2. The sorted ILC2s were injected into BPD mice via tail vein. Following ILC2 adoptive transfusion, the changes of Th17 cell response and lung injury were detected in BPD mice. RESULTS The expression levels of Th17 cells and Th17 cell-related cytokines, including IL-17 A, IL-17 F, and IL-22, were significantly increased in BPD mice. Concurrently, there was a significant increase in the amount of ILC2 and IL-6+ILC2 during hyperoxia-induced lung injury, which was consistent with the trend for Th17 cell response. Compared to the control BPD group, ILC2 depletion was found to partially abolish the Th17 cell response and had protective effects against lung injury after hyperoxia. Furthermore, the adoptive transfer of ILC2 enhanced the Th17 cell response and aggravated lung injury in BPD mice. CONCLUSIONS This study found that ILC2 regulates hyperoxia-induced lung injury by targeting the Th17 cell response in BPD, which shows a novel strategy for BPD immunotherapy.
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Affiliation(s)
- Yue Zhu
- Department of Pediatrics, The Affiliated Hospital of Jiangsu University, No.438 Jiefang Road, Zhenjiang, Jiangsu, 212001, China
| | - Lanlan Mi
- Department of Neonatology, Shanghai Children's Medical Center, No.1678 Dongfang Road, Pudong New Area, Shanghai, 200127, China
| | - Hongyan Lu
- Department of Pediatrics, The Affiliated Hospital of Jiangsu University, No.438 Jiefang Road, Zhenjiang, Jiangsu, 212001, China.
| | - Huimin Ju
- Department of Pediatrics, The Affiliated Hospital of Jiangsu University, No.438 Jiefang Road, Zhenjiang, Jiangsu, 212001, China
| | - Xiaobo Hao
- Department of Pediatrics, The Affiliated Hospital of Jiangsu University, No.438 Jiefang Road, Zhenjiang, Jiangsu, 212001, China
| | - Suqing Xu
- Department of Pediatrics, The Affiliated Hospital of Jiangsu University, No.438 Jiefang Road, Zhenjiang, Jiangsu, 212001, China
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Luo X, Zhao M, Chen C, Lin F, Li X, Huang H, Dou L, Feng J, Xiao S, Liu D, He J, Yu J. Identification of genetic susceptibility in preterm newborns with bronchopulmonary dysplasia by whole-exome sequencing: BIVM gene may play a role. Eur J Pediatr 2023; 182:1707-1718. [PMID: 36757497 PMCID: PMC10167099 DOI: 10.1007/s00431-022-04779-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/08/2022] [Accepted: 12/21/2022] [Indexed: 02/10/2023]
Abstract
UNLABELLED Bronchopulmonary dysplasia (BPD) is a common chronic respiratory disease in preterm infants caused by multifactorial etiology. Genetic factors are involved in the occurrence of BPD, but studies have found that candidate genes have poor reproducibility and are influenced by ethnic heterogeneity; therefore, more exploration is still needed. We performed whole-exon sequencing in 34 preterm infants with BPD and 32 non-BPD control neonates. The data were analyzed and interpreted by Fisher difference comparison, PLINK and eQTL association analysis, KEGG and GO enrichment analysis, STRING tool, Cytoscape software, ProtParam tool, HOPE online software, and GEOR2 analysis on NCBI GEO dataset. BPD has a highly heterogeneity in different populations, and we found 35 genes overlapped with previous whole-exon sequencing studies, such as APOB gene. Arterial and epithelial cell development and energy metabolism pathways affect BPD. In this study, 24 key genes were identified, and BIVM rs3825519 mutation leads to prolonged assisted ventilation in patients with BPD. A novel DDAH1 mutation site (NM_012137: exon1: c.89 T > G: p.L30R) was found in 9 BPD patients. CONCLUSION BIVM gene rs3825519 mutation may play a role in the pathogenesis of BPD by affecting cilia movement, and the DDAH1 and APOB genes mutations may have a pathogenic role in BPD. WHAT IS KNOWN • Genetic factors are involved in the occurrence of bronchopulmonary dysplasia. • The candidate genes have poor reproducibility and are influenced by ethnic heterogeneity, therefore, more exploration is still needed. WHAT IS NEW • We identified the role of susceptible SNPs in BPD in Shenzhen, China, and identified 24 key genes that influence the pathogenesis of BPD, and also found 35 genes overlapped with previous whole exon sequencing studies, such as APOB gene. • We found that BIVM and DDAH1 genes may play a pathogenic role in the pathogenesis of BPD.
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Affiliation(s)
- Xi Luo
- Department of Neonatology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Chongqing Key Laboratory of Pediatrics, 136 Zhongshan 2nd Road, Yuzhong District, Chongqing, 40014, China
| | - Min Zhao
- Department of Neonatology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Chongqing Key Laboratory of Pediatrics, 136 Zhongshan 2nd Road, Yuzhong District, Chongqing, 40014, China
| | - Cheng Chen
- Department of Neonatology, Shenzhen Longgang District Maternity & Child Healthcare Hospital, Shenzhen, 518172, China
| | - Fengji Lin
- Department of Neonatology, Shenzhen Longgang District Maternity & Child Healthcare Hospital, Shenzhen, 518172, China
| | - Xiaodong Li
- Department of Neonatology, Huazhong University of Science and Technology Union Shenzhen Hospital (NanShan Hospital), Shenzhen, 518052, China
| | - Haiyun Huang
- Department of Neonatology, Huazhong University of Science and Technology Union Shenzhen Hospital (NanShan Hospital), Shenzhen, 518052, China
| | - Lei Dou
- Department of Neonatology, Southern University of Science and Technology Hospital, No. 6019 Liuxian Avenue, Xili Street, Nanshan District, Shenzhen, 518055, China
| | - Jinxing Feng
- Department of Neonatology, Shenzhen Children's Hospital, Shenzhen, 518031, China
| | - Shanqiu Xiao
- Department of Neonatology, Shenzhen Baoan Women's and Children's Hospital, Shenzhen, 518133, China
| | - Dong Liu
- Department of Neonatology, Shenzhen People's Hospital, Shenzhen, 518020, China
| | - Junli He
- Department of Neonatology, Shenzhen University General Hospital, Shenzhen, 518055, China
| | - Jialin Yu
- Department of Neonatology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Chongqing Key Laboratory of Pediatrics, 136 Zhongshan 2nd Road, Yuzhong District, Chongqing, 40014, China. .,Department of Neonatology, Southern University of Science and Technology Hospital, No. 6019 Liuxian Avenue, Xili Street, Nanshan District, Shenzhen, 518055, China.
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Validation of disease-specific biomarkers for the early detection of bronchopulmonary dysplasia. Pediatr Res 2023; 93:625-632. [PMID: 35595912 PMCID: PMC9988689 DOI: 10.1038/s41390-022-02093-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 03/23/2022] [Accepted: 04/25/2022] [Indexed: 11/08/2022]
Abstract
OBJECTIVE To demonstrate and validate the improvement of current risk stratification for bronchopulmonary dysplasia (BPD) early after birth by plasma protein markers (sialic acid-binding Ig-like lectin 14 (SIGLEC-14), basal cell adhesion molecule (BCAM), angiopoietin-like 3 protein (ANGPTL-3)) in extremely premature infants. METHODS AND RESULTS Proteome screening in first-week-of-life plasma samples of n = 52 preterm infants <32 weeks gestational age (GA) on two proteomic platforms (SomaLogic®, Olink-Proteomics®) confirmed three biomarkers with significant predictive power: BCAM, SIGLEC-14, and ANGPTL-3. We demonstrate high sensitivity (0.92) and specificity (0.86) under consideration of GA, show the proteins' critical contribution to the predictive power of known clinical risk factors, e.g., birth weight and GA, and predicted the duration of mechanical ventilation, oxygen supplementation, as well as neonatal intensive care stay. We confirmed significant predictive power for BPD cases when switching to a clinically applicable method (enzyme-linked immunosorbent assay) in an independent sample set (n = 25, p < 0.001) and demonstrated disease specificity in different cohorts of neonatal and adult lung disease. CONCLUSION While successfully addressing typical challenges of clinical biomarker studies, we demonstrated the potential of BCAM, SIGLEC-14, and ANGPTL-3 to inform future clinical decision making in the preterm infant at risk for BPD. TRIAL REGISTRATION Deutsches Register Klinische Studien (DRKS) No. 00004600; https://www.drks.de . IMPACT The urgent need for biomarkers that enable early decision making and personalized monitoring strategies in preterm infants with BPD is challenged by targeted marker analyses, cohort size, and disease heterogeneity. We demonstrate the potential of the plasma proteins BCAM, SIGLEC-14, and ANGPTL-3 to identify infants with BPD early after birth while improving the predictive power of clinical variables, confirming the robustness toward proteome assays and proving disease specificity. Our comprehensive analysis enables a phase-III clinical trial that allows full implementation of the biomarkers into clinical routine to enable early risk stratification in preterms with BPD.
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Solid phase synthesis of oxidized sodium alginate-tobramycin conjugate and its application for infected wound healing. Carbohydr Polym 2022; 295:119843. [PMID: 35988976 DOI: 10.1016/j.carbpol.2022.119843] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 06/29/2022] [Accepted: 07/05/2022] [Indexed: 11/23/2022]
Abstract
Although sodium alginate possesses excellent biocompatibility, moisture retention and easy availability, it cannot be directly applied for infected wound treatment. Herein, a solid phase synthesis strategy was proposed to fabricate oxidized sodium alginate-tobramycin conjugate (OSA-TOB) for anti-infection dressing development. 13C nuclear magnetic resonance spectra indicated that the oxidization process does not change the ratio of β-D-mannuronic acid (M) / α-L-guluronic acid (G) in OSA and the oxidization reaction shows no stereoselectivity. Elemental analysis disclosed that the graft ratio of tobramycin in OSA-TOB is 13.8 %. Antibacterial test indicated that OSA-TOB can effectively inhibit four prevalent pathogenic bacterial S.epidermidis, P. aeruginosa, S. aureus and E. coli via a different antibacterial mechanism compared to the original TOB. Hemolysis and cytotoxicity assays shown that OSA-TOB have superior hemocompatibility and cytocompatibility. Infected wound healing assay shown that the healing rate of OSA-TOB is the highest. Further analysis indicated that OSA-TOB can reduce the local inflammatory response, accelerate the form of epithelium and collagen deposition. In conclusions, OSA-TOB synthesized in solid phase can be potentially applied as a promising anti-infection wound dressing.
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Ge H, Qiao Y, Ge J, Li J, Hu K, Chen X, Cao X, Xu X, Wang W. Effects of early vitamin D supplementation on the prevention of bronchopulmonary dysplasia in preterm infants. Pediatr Pulmonol 2022; 57:1015-1021. [PMID: 34989171 DOI: 10.1002/ppul.25813] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 12/20/2021] [Accepted: 12/30/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND Bronchopulmonary dysplasia (BPD) is a respiratory dysfunction caused by poor lung bronchial development, which may lead to long-term lung disease, threatening the lives of children. Studies have shown that premature infants with low vitamin D are highly associated with BPD. In this study, we aim to obtain insights into whether early vitamin D supplementation could prevent BPD in preterm infants. METHODS A total of 112 preterm infants were randomly divided into two groups: the control and vitamin D supplementation (VD) group. The VD group received vitamin D (800 IU/day) within 48 h at birth for consecutively 28 days. The serum levels of 25(OH)D3 and C-reactive protein (CRP), IL6, and TNF-α were measured using ELISA assay. The arterial partial pressure of oxygen (PaO2 ) and carbon dioxide (PaCO2 ) was measured using an i-STAT analyzer. RESULTS The occurrence of BPD was decreased in the VD group compared with the control. The decreased serum 25(OH)D3 was significantly elevated by supplementation with vitamin D. In addition, the serum inflammation factors (CRP, IL6, and TNF-α) were significantly reduced by vitamin D supplementation. CONCLUSION We demonstrated that early vitamin D supplementation could significantly reduce BPD incidence in preterm infants. We showed that early vitamin D supplementation could significantly increase serum level of 25(OH)D3 and reduce inflammatory response thereby preventing and reducing neonatal BPD. LIMITATION Firstly, a larger sample size will be needed to be included to gain a comprehensive understanding of the protective effects of vitamin D and BPD mechanistically in preterm infants. Secondly, the pathophysiological process of BPD will need to be studied. In addition, the pathways that vitamin D is responsible for, need to be further researched.
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Affiliation(s)
- Haiyan Ge
- Newborn Department, The Fourth Hospital of Shijiazhuang, the Obstetrics and Gynecology Hospital Affiliated to Hebei Medical University, Shijiazhuang, Hebei, China
| | - Yanxia Qiao
- Newborn Department, The Fourth Hospital of Shijiazhuang, the Obstetrics and Gynecology Hospital Affiliated to Hebei Medical University, Shijiazhuang, Hebei, China
| | - Jun Ge
- Newborn Department, The Fourth Hospital of Shijiazhuang, the Obstetrics and Gynecology Hospital Affiliated to Hebei Medical University, Shijiazhuang, Hebei, China
| | - Junran Li
- Newborn Department, The Fourth Hospital of Shijiazhuang, the Obstetrics and Gynecology Hospital Affiliated to Hebei Medical University, Shijiazhuang, Hebei, China
| | - Kena Hu
- Newborn Department, The Fourth Hospital of Shijiazhuang, the Obstetrics and Gynecology Hospital Affiliated to Hebei Medical University, Shijiazhuang, Hebei, China
| | - Xiaohui Chen
- Newborn Department, The Fourth Hospital of Shijiazhuang, the Obstetrics and Gynecology Hospital Affiliated to Hebei Medical University, Shijiazhuang, Hebei, China
| | - Xinghua Cao
- Newborn Department, The Fourth Hospital of Shijiazhuang, the Obstetrics and Gynecology Hospital Affiliated to Hebei Medical University, Shijiazhuang, Hebei, China
| | - Xiangshi Xu
- Newborn Department, The Fourth Hospital of Shijiazhuang, the Obstetrics and Gynecology Hospital Affiliated to Hebei Medical University, Shijiazhuang, Hebei, China
| | - Wenzhe Wang
- Newborn Department, The Fourth Hospital of Shijiazhuang, the Obstetrics and Gynecology Hospital Affiliated to Hebei Medical University, Shijiazhuang, Hebei, China
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Awonuga AO, Chatzicharalampous C, Thakur M, Rambhatla A, Qadri F, Awonuga M, Saed G, Diamond MP. Genetic and Epidemiological Similarities, and Differences Between Postoperative Intraperitoneal Adhesion Development and Other Benign Fibro-proliferative Disorders. Reprod Sci 2021; 29:3055-3077. [PMID: 34515982 DOI: 10.1007/s43032-021-00726-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 08/22/2021] [Indexed: 12/11/2022]
Abstract
Intraperitoneal adhesions complicate over half of abdominal-pelvic surgeries with immediate, short, and long-term sequelae of major healthcare concern. The pathogenesis of adhesion development is similar to the pathogenesis of wound healing in all tissues, which if unchecked result in production of fibrotic conditions. Given the similarities, we explore the published literature to highlight the similarities in the pathogenesis of intra-abdominal adhesion development (IPAD) and other fibrotic diseases such as keloids, endometriosis, uterine fibroids, bronchopulmonary dysplasia, and pulmonary, intraperitoneal, and retroperitoneal fibrosis. Following a literature search using PubMed database for all relevant English language articles up to November 2020, we reviewed relevant articles addressing the genetic and epidemiological similarities and differences in the pathogenesis and pathobiology of fibrotic diseases. We found genetic and epidemiological similarities and differences between the pathobiology of postoperative IPAD and other diseases that involve altered fibroblast-derived cells. We also found several genes and single nucleotide polymorphisms that are up- or downregulated and whose products directly or indirectly increase the propensity for postoperative adhesion development and other fibrotic diseases. An understanding of the similarities in pathophysiology of adhesion development and other fibrotic diseases contributes to a greater understanding of IPAD and these disease processes. At a very fundamental level, blocking changes in the expression or function of genes necessary for the transformation of normal to altered fibroblasts may curtail adhesion formation and other fibrotic disease since this is a prerequisite for their development. Similarly, applying measures to induce apoptosis of altered fibroblast may do the same; however, apoptosis should be at a desired level to simultaneously ameliorate development of fibrotic diseases while allowing for normal healing. Scientists may use such information to develop pharmacologic interventions for those most at risk for developing these fibrotic conditions.
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Affiliation(s)
- Awoniyi O Awonuga
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, 48201, USA.
| | - Charalampos Chatzicharalampous
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Mili Thakur
- Reproductive Genomics Program, The Fertility Center, Grand Rapids, MI, USA.,Department of Obstetrics, Gynecology and Reproductive Biology, College of Human Medicine, Michigan State University, Grand Rapids, MI, USA
| | - Anupama Rambhatla
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Farnoosh Qadri
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Modupe Awonuga
- Division of Neonatology, Department of Pediatrics and Human Development, Michigan State University, 1355 Bogue Street, East Lansing, MI, USA
| | - Ghassan Saed
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Michael P Diamond
- Department of Obstetrics and Gynecology, Augusta University, 1120 15th Street, CJ-1036, Augusta, GA, 30912, USA
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Interleukin-24 as a Pulmonary Target Cytokine in Bronchopulmonary Dysplasia. Cell Biochem Biophys 2021; 79:311-320. [PMID: 33683657 DOI: 10.1007/s12013-021-00968-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/15/2021] [Indexed: 12/18/2022]
Abstract
The proliferation of fetal alveolar type II cells (FATIICs) was impaired in bronchopulmonary dysplasia (BPD), which is modulated by hyperoxia and inflammatory response. Interleukin 24 (IL-24), a cytokine produced by certain cell types, plays an essential role in inflammation and host protection against infection. However, the ability of FATIICs to produce IL-24 remains unclear, and the role of IL-24 in BPD progression is yet to be determined. With reverse transcription quantitative polymerase chain reaction (RT-qPCR) and enzyme-linked immunosorbent assay, the authors evaluated whether FATIICs produce IL-24 in physiological conditions. The authors quantified IL-24 expression in the lungs of newborn rat pups exposed to hyperoxia (70% oxygen) and in FATIICs isolated on embryonic day 19 that were exposed to 95% oxygen or lipopolysaccharide (LPS). The role of IL-24 in FATIICs, cell proliferation, cell apoptosis, and cell cycle were further evaluated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and flow cytometric analysis. Also, they assessed caspase-3 and SOCS3 mRNA in IL-24 siRNA-treated cells by using RT-qPCR. During culture, IL-24 mRNA and protein levels in FATIICs gradually decreased with FATIIC differentiation. IL-24 expression increased significantly in rat lungs exposed to hyperoxia and FATIICs exposed to oxygen or LPS. Recombinant IL-24 enhanced cell proliferation by decreasing the proportion of apoptotic cells and increasing the proportion of cells in the S phase. The IL-24 siRNA-treated cells expressed more caspase-3 mRNA. Furthermore, suppressor of cytokine signaling 3 (SOCS3) mRNA was significantly decreased in rats and FATIICs exposed to oxygen, whereas it dramatically increased in FATIICs exposed to LPS. The IL-24 siRNA-treated cells expressed more SOCS3 mRNA. These studies suggest IL-24 is a pulmonary target cytokine in BPD, and may possibly regulate SOCS3 in oxidative stress and inflammation of the lung.
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Zhang D, Ouyang Q, Hu Z, Lu S, Quan W, Li P, Chen Y, Li S. Catechol functionalized chitosan/active peptide microsphere hydrogel for skin wound healing. Int J Biol Macromol 2021; 173:591-606. [PMID: 33508359 DOI: 10.1016/j.ijbiomac.2021.01.157] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 01/11/2021] [Accepted: 01/23/2021] [Indexed: 12/18/2022]
Abstract
Chitosan-based thermosensitive hydrogels have been widely used in drug delivery and tissue engineering, but their poor bioactivity has limited their further applications. Integral active oyster peptide microspheres (OPM) with an average particle diameter of 3.9 μm were prepared with high encapsulation efficiency (72.8%) and loading capacity (11.9%), exhibiting desirable sustained release effects. Using catechol functionalized chitosan (CS-C) as the polymeric matrix, OPM as the filler, and β-sodium glycerophosphate (β-GP) as a thermal sensitizer, the thermosensitive hydrogel CS-C/OPM/β-GP was prepared. Besides, the application of the hydrogel on wound healing was studied, and its biosafety was evaluated. The results of cell migration in vitro showed that the cell migration rate of CS-C/OPM/β-GP reached 97.47 ± 5.41% within 48 h, indicating that the hydrogel accelerated the migration of L929 cells. As demonstrated in the mouse skin wound experiment, CS-C/OPM/β-GP hydrogel not only inhibited the aggregation of diversified inflammatory cells and accelerated the generation of collagen fibers and new blood vessels of the wound, but also enhanced the synthesis of total protein (TP) in granulation tissue, and up-regulated the expression of Ki-67 and VEGF in the injury, thereby achieving fast wound healing. Safety evaluation results showed that CS-C/OPM/β-GP hydrogel was not cytotoxic to L929 cells, and the hemolysis ratio was less than 5% within 1 mg/mL. In conclusion, CS-C/OPM/β-GP hydrogel is expected as a promising medical dressing for wound healing.
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Affiliation(s)
- Dongying Zhang
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524000, China
| | - Qianqian Ouyang
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang 524023, China
| | - Zhang Hu
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China.
| | - Sitong Lu
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China
| | - Weiyan Quan
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China
| | - Puwang Li
- South Subtropical Crop Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001, China.
| | - Yu Chen
- School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Sidong Li
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China
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Sage M, See W, Nault S, Morin C, Michalski C, Chabot B, Marouan S, Lavoie PM, Micheau P, Praud JP, Fortin-Pellerin É. Effect of Low Versus High Tidal-Volume Total Liquid Ventilation on Pulmonary Inflammation. Front Physiol 2020; 11:603. [PMID: 32625110 PMCID: PMC7315809 DOI: 10.3389/fphys.2020.00603] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 05/14/2020] [Indexed: 01/28/2023] Open
Abstract
Animal experiments suggest that total liquid ventilation (TLV) induces less ventilator-induced lung injury (VILI) than conventional mechanical gas ventilation. However, TLV parameters that optimally minimize VILI in newborns remain unknown. Our objective was to compare lung inflammation between low (L-VT) and high (H-VT) liquid tidal volume and evaluate impacts on the weaning process. Sixteen anesthetized and paralyzed newborn lambs were randomized in an L-VT group (initial tidal volume of 10 mL/kg at 10/min) and an H-VT group (initial tidal volume of 20 mL/kg at 5/min). Five unventilated newborn lambs served as controls. After 4 h of TLV in the supine position, the lambs were weaned in the prone position for another 4 h. The levels of respiratory support needed during the 4 h post-TLV were compared. The anterior and posterior lung regions were assessed by a histological score and real-time quantitative PCR for IL1B, IL6, and TNF plus 12 other exploratory VILI-associated genes. All but one lamb were successfully extubated within 2 h post-TLV (72 ± 26 min vs. 63 ± 25 min, p = 0.5) with similar FiO2 at 4 h post-TLV (27 ± 6% vs. 33 ± 7%, p = 0.3) between the L-VT and H-VT lambs. No significant differences were measured in histological inflammation scores between L-VT and H-VT lambs, although lambs in both groups exhibited slightly higher scores than the control lambs. The L-VT group displayed higher IL1B mRNA expression than the H-VT group in both anterior (2.8 ± 1.5-fold increase vs. 1.3 ± 0.4-fold increase, p = 0.02) and posterior lung regions (3.0 ± 1.0-fold change increase vs. 1.1 ± 0.3-fold increase, p = 0.002), respectively. No significant differences were found in IL6 and TNF expression levels. Gene expression changes overall indicated that L-VT was associated with a qualitatively distinct inflammatory gene expression profiles compared to H-VT, which may indicate different clinical effects. In light of these findings, further mechanistic studies are warranted. In conclusion, we found no advantage of lower tidal volume use, which was in fact associated with a slightly unfavorable pattern of inflammatory gene expression.
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Affiliation(s)
- Michaël Sage
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Wendy See
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Stéphanie Nault
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Christophe Morin
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Christina Michalski
- BC Children’s Hospital Research Institute, The University of British Columbia, Vancouver, BC, Canada
- Department of Experimental Medicine, The University of British Columbia, Vancouver, BC, Canada
| | - Benoit Chabot
- Department of Microbiology and Infectiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Sofia Marouan
- Department of Pathology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Pascal M. Lavoie
- BC Children’s Hospital Research Institute, The University of British Columbia, Vancouver, BC, Canada
- Department of Experimental Medicine, The University of British Columbia, Vancouver, BC, Canada
- Department of Pediatrics, The University of British Columbia, Vancouver, BC, Canada
| | - Philippe Micheau
- Department of Mechanical Engineering, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Jean-Paul Praud
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
- Department of Pediatrics, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Étienne Fortin-Pellerin
- Department of Pharmacology-Physiology, Université de Sherbrooke, Sherbrooke, QC, Canada
- Department of Pediatrics, Université de Sherbrooke, Sherbrooke, QC, Canada
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11
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Chitosan-Gentamicin Conjugate Hydrogel Promoting Skin Scald Repair. Mar Drugs 2020; 18:md18050233. [PMID: 32365733 PMCID: PMC7281128 DOI: 10.3390/md18050233] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 04/23/2020] [Accepted: 04/27/2020] [Indexed: 12/11/2022] Open
Abstract
Our earlier research indicated that chitosan-gentamicin conjugate (CS-GT) possesses superior antimicrobial activity and good water solubility. To develop CS-GT-based scald dressings, the antibacterial properties of CS-GT were further studied, and the biosafety of CS-GT and the healing mechanism of CS-GT hydrogel was systematically explored in this article. It was found that cell viability shows a declined inclination with the prolonged culture time and the increased concentration of CS-GT. After three day’s culture, the cell viability could still remain at 79.72% when CS-GT concentration was as high as 1000 μg/mL. On the other hand, the hemolysis rate of CS-GT was lower than 5% when its concentration is 800 μg/mL. Therefore CS-GT has good cytocompatibility and hemocompatibility. A wound-healing experiment has shown that the skin healing rate of CS-GT hydrogel was the highest at 99.61%, followed by the positive control (wet burn ointment) 94.98%, GT hydrogel 87.50%, and matrix 77.39%. The blank control group, however, possessed the lowest healing rate of 75.45%. Further analysis indicated that CS-GT hydrogel could promote the synthesis of total protein (TP) in skin granulation tissue, resulting in the enhanced hydroxyproline (HYP) content, which facilitated collagen fibrogenesis, reduced cytokine expression in an inflammatory response, and, ultimately, accelerated wound healing. To sum up, CS-GT hydrogel is a promising scald dressing.
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Parad RB, Winston AB, Kalish LA, Gupta M, Thompson I, Sheldon Y, Morey J, Van Marter LJ. Role of Genetic Susceptibility in the Development of Bronchopulmonary Dysplasia. J Pediatr 2018; 203:234-241.e2. [PMID: 30287068 PMCID: PMC8516345 DOI: 10.1016/j.jpeds.2018.07.099] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 07/17/2018] [Accepted: 07/27/2018] [Indexed: 01/24/2023]
Abstract
OBJECTIVE To assess heritable contributions to bronchopulmonary dysplasia (BPD) risk in a twin cohort restricted to gestational age at birth <29 weeks. STUDY DESIGN A total of 250 twin pairs (192 dichorionic, 58 monochorionic) born <29 weeks gestational age with known BPD status were identified. Three statistical methods applicable to twin cohorts (χ2 test, intraclass correlations [ICCs], and ACE modeling [additive genetic or A, common environmental or C, and unique environmental or E components]) were applied. Heritability was estimated as percent variability from A. Identical methods were applied to a subcohort defined by zygosity and to an independent validation cohort. RESULTS χ2 analyses comparing whether neither, 1, or both of monochorionic (23, 19, 16) and dichorionic (88, 56, 48) twin pairs developed BPD revealed no difference. Although there was similarity in BPD outcome within both monochorionic and dichorionic twin pairs by ICC (monochorionic ICC = 0.34, 95% CI [0.08, 0.55]; dichorionic ICC = 0.39, 95% CI [0.25, 0.51]), monochorionic twins were not more likely than dichorionic twins to have the same outcome (P = .70). ACE modeling revealed no contribution of heritability to BPD risk (% A = 0.0%, 95% CI [0.0%, 43.1%]). Validation and zygosity based cohort results were similar. CONCLUSIONS Our analysis suggests that heritability is not a major contributor to BPD risk in preterm infants <29 weeks gestational age.
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Affiliation(s)
- Richard B Parad
- Brigham and Women's Hospital, Boston, MA; Boston Children's Hospital, Boston, MA; Harvard Medical School, Boston, MA.
| | | | - Leslie A Kalish
- Boston Children’s Hospital, Boston, MA,Harvard Medical School, Boston, MA
| | - Munish Gupta
- Boston Children’s Hospital, Boston, MA,Beth Israel Deaconess Medical Center, Boston, MA,Harvard Medical School, Boston, MA
| | | | | | | | - Linda J Van Marter
- Brigham and Women’s Hospital, Boston, MA,Boston Children’s Hospital, Boston, MA,Harvard Medical School, Boston, MA
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Liu D, Chu X, Wang H, Dong J, Ge SQ, Zhao ZY, Peng HL, Sun M, Wu LJ, Song MS, Guo XH, Meng Q, Wang YX, Lauc G, Wang W. The changes of immunoglobulin G N-glycosylation in blood lipids and dyslipidaemia. J Transl Med 2018; 16:235. [PMID: 30157878 PMCID: PMC6114873 DOI: 10.1186/s12967-018-1616-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 08/23/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Alternative N-glycosylation has significant structural and functional consequences on immunoglobulin G (IgG) and can affect immune responses, acting as a switch between pro- and anti-inflammatory IgG functionality. Studies have demonstrated that IgG N-glycosylation is associated with ageing, body mass index, type 2 diabetes and hypertension. METHODS Herein, we have demonstrated patterns of IgG glycosylation that are associated with blood lipids in a cross-sectional study including 598 Han Chinese aged 20-68 years. The IgG glycome composition was analysed by ultra-performance liquid chromatography. RESULTS Blood lipids were positively correlated with glycan peak GP6, whereas they were negatively correlated with GP18 (P < 0.05/57). The canonical correlation analysis indicated that initial N-glycan structures, including GP4, GP6, GP9-12, GP14, GP17, GP18 and GP23, were significantly correlated with blood lipids, including total cholesterol, total triglycerides (TG) and low-density lipoprotein (r = 0.390, P < 0.001). IgG glycans patterns were able to distinguish patients with dyslipidaemia from the controls, with an area under the curve of 0.692 (95% confidence interval 0.644-0.740). CONCLUSIONS Our findings indicated that a possible association between blood lipids and the observed loss of galactose and sialic acid, as well as the addition of bisecting GlcNAcs, which might be related to the chronic inflammation accompanying with the development and procession of dyslipidaemia.
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Affiliation(s)
- Di Liu
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, 10 Youanmen Xitoutiao, Beijing, 100069 China
| | - Xi Chu
- Center for Physical Examination, Xuanwu Hospital, Capital Medical University, Beijing, 100050 China
| | - Hao Wang
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, 10 Youanmen Xitoutiao, Beijing, 100069 China
- School of Medical Sciences, Edith Cowan University, Perth, WA 6027 Australia
| | - Jing Dong
- Center for Physical Examination, Xuanwu Hospital, Capital Medical University, Beijing, 100050 China
| | - Si-Qi Ge
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, 10 Youanmen Xitoutiao, Beijing, 100069 China
- School of Medical Sciences, Edith Cowan University, Perth, WA 6027 Australia
| | - Zhong-Yao Zhao
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, 10 Youanmen Xitoutiao, Beijing, 100069 China
| | - Hong-Li Peng
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, 10 Youanmen Xitoutiao, Beijing, 100069 China
| | - Ming Sun
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, 10 Youanmen Xitoutiao, Beijing, 100069 China
| | - Li-Juan Wu
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, 10 Youanmen Xitoutiao, Beijing, 100069 China
| | - Man-Shu Song
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, 10 Youanmen Xitoutiao, Beijing, 100069 China
| | - Xiu-Hua Guo
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, 10 Youanmen Xitoutiao, Beijing, 100069 China
| | - Qun Meng
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, 10 Youanmen Xitoutiao, Beijing, 100069 China
| | - You-Xin Wang
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, 10 Youanmen Xitoutiao, Beijing, 100069 China
- School of Medical Sciences, Edith Cowan University, Perth, WA 6027 Australia
| | - Gordan Lauc
- Genos Glycobiology Research Laboratory, 10000 Zagreb, Croatia
- Faculty of Pharmacy and Biochemistry, University of Zagreb, 10000 Zagreb, Croatia
| | - Wei Wang
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, 10 Youanmen Xitoutiao, Beijing, 100069 China
- School of Medical Sciences, Edith Cowan University, Perth, WA 6027 Australia
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Chen H, Zheng W. Association of cytokine gene polymorphisms with bronchopulmonary dysplasia in Han Chinese newborns. Pediatr Pulmonol 2018; 53:50-56. [PMID: 29136357 DOI: 10.1002/ppul.23902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 10/06/2017] [Indexed: 01/29/2023]
Abstract
OBJECTIVE To investigate the association of 14 cytokine gene polymorphisms with bronchopulmonary dysplasia (BPD) among Han Chinese newborns. The 14 polymorphisms investigated were IL18 rs1946519, rs1946518, rs187238, rs360718, and rs360717 polymorphisms, IL10 rs3024493 polymorphism, IL6 rs1800795, rs1800796, and rs1800797 polymorphisms, TNF rs361525 and rs1800629 polymorphisms, and TGFB1 rs1800469, rs1800468, and rs1800471 polymorphisms. WORKING HYPOTHESIS The polymorphisms could be associated with the risk of BPD among Han Chinese newborns. STUDY DESIGN, PATIENT-SUBJECT SELECTION, AND METHODOLOGY This is a retrospective study. Genotyping of these polymorphisms were performed on BPD cases (N = 1022) and non-BPD controls (N = 1039) who were ascertained using the established Jobe and Bancalari criteria. The odds ratios (ORs) of polymorphisms whose genotype distribution in the controls fulfilled the Hardy-Weinberg equilibrium (HWE) were calculated to evaluate the strengths of genetic association. RESULTS Genotype distributions of IL6 rs1800795 and rs1800797 polymorphisms deviated significantly from HWE and were omitted from the analysis. Among the 12 remaining polymorphisms, only TNF rs361525 polymorphism demonstrated a statistically significant association with BPD risk. The heterozygous GA genotype of TNF rs361525 polymorphism showed an OR of 1.932 (1.512-2.470), while the homozygous AA variant genotype showed an OR of 2.927 (1.216-7.048) (P = 0.000 and P = 0.017, respectively). Besides, the allelic OR was also analyzed, and it was found that the variant A allele of TNF rs361525 polymorphism showed an OR of 2.146 (1.718-2.680) (P = 0.000). CONCLUSION TNF rs361525 polymorphism could influence BPD risk among Han Chinese newborns.
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Affiliation(s)
- Hui Chen
- Department of Neonatology, Shenzhen Hospital of Southern Medical University, Shenzhen, China
| | - Wei Zheng
- Department of Neonatology, Shenzhen Hospital of Southern Medical University, Shenzhen, China
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Shim SY, Jeong HJ, Park HJ, Kwon EY, Kim BM, Choi YJ, Choi YH, Cho SJ, Choi JH, Park EA. Functional variation of SHP-2 promoter is associated with preterm birth and delayed myelination and motor development in preterm infants. Sci Rep 2017; 7:6052. [PMID: 28729690 PMCID: PMC5519743 DOI: 10.1038/s41598-017-06401-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 06/13/2017] [Indexed: 12/18/2022] Open
Abstract
Src homology 2 domain-containing protein tyrosine phosphatase 2 (SHP-2) is a cytoplasmic tyrosine phosphatase that is highly expressed in hematopoietic cells and in the CNS and exerts opposite effects on signal transduction by exerting a neuroprotective or proapoptotic effect. Several mutations of SHP-2 have been found in children with myeloproliferative disorders or malignant leukemia, and some of these can affect brain development. In the present study, we aimed to identify and functionally characterize genetic variations in SHP-2 in 72 preterm and 58 full-term infants and to evaluate the effect of the variations on neurodevelopment in preterm infants. Twelve genetic variations were identified. Among them, two variations in the SHP-2 promoter, g.-317C > T and g.-273G > A, were found to significantly increase promoter activity, and the frequency of g.-273G > A was higher in preterm infants than in full-term infants. Two transcription factors, NF-κB and GABPα, were found to be involved in the transcriptional regulation of SHP-2 by the two above-mentioned variations. In particular, we found that g.-273G > A was significantly associated with delayed myelination and poor motor development in preterm infants. Our results suggest that a functional promoter variation in SHP-2 is associated with spontaneous preterm birth itself as well as white matter myelination and neurodevelopment.
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Affiliation(s)
- So-Yeon Shim
- Division of Neonatology, Department of Pediatrics, School of Medicine, Ewha Womans University, Seoul, Korea
| | - Hye Jin Jeong
- Neuroscience Research Institute, Gachon University, Incheon, Korea
| | - Hyo Jin Park
- Department of Pharmacology, Tissue Injury Defense Research Center, School of Medicine, Ewha Womans University, Seoul, Korea
| | - Eun Young Kwon
- Department of Pharmacology, Tissue Injury Defense Research Center, School of Medicine, Ewha Womans University, Seoul, Korea
| | - Bo Min Kim
- Department of Pharmacology, Tissue Injury Defense Research Center, School of Medicine, Ewha Womans University, Seoul, Korea
| | - Yang Ji Choi
- Department of Pharmacology, Tissue Injury Defense Research Center, School of Medicine, Ewha Womans University, Seoul, Korea
| | - Youn-Hee Choi
- Department of Physiology, Tissue Injury Defense Research Center, School of Medicine, Ewha Womans University, Seoul, Korea
| | - Su Jin Cho
- Division of Neonatology, Department of Pediatrics, School of Medicine, Ewha Womans University, Seoul, Korea
| | - Ji Ha Choi
- Department of Pharmacology, Tissue Injury Defense Research Center, School of Medicine, Ewha Womans University, Seoul, Korea.
| | - Eun Ae Park
- Division of Neonatology, Department of Pediatrics, School of Medicine, Ewha Womans University, Seoul, Korea.
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The significance of IL-1β +3953C>T, IL-6 -174G>C and -596G>A, TNF-α -308G>A gene polymorphisms and 86 bp variable number tandem repeat polymorphism of IL-1RN in bronchopulmonary dysplasia in infants born before 32 weeks of gestation. Cent Eur J Immunol 2017; 42:287-293. [PMID: 29204094 PMCID: PMC5708201 DOI: 10.5114/ceji.2017.67000] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 03/20/2017] [Indexed: 01/26/2023] Open
Abstract
Introduction Bronchopulmonary dysplasia (BPD) is a chronic lung disease that affects primarily preterm infants. Genetic factors are also taken into consideration in the pathogenesis of BPD. Genetic predispositions to higher production of inflammation mediators seem to be crucial.
Material and methods The aim of this study was to evaluate the possible relationship between polymorphisms: interleukin-1β +3953 C>T, interleukin-6 -174 G>C and -596 G>A, tumour necrosis factor -308 G>A and interleukin-1RN VNTR 86bp and the occurrence of BPD in a population of 100 preterm infants born from singleton pregnancy, before 32+0 weeks of gestation, exposed to antenatal steroids therapy, and without congenital abnormalities.
Results In the study population BPD was diagnosed in 36 (36%) newborns. Among the studied polymorphisms we found the higher prevalence for BPD developing of the following genotypes: 1/2 (OR 1.842 [0.673-5.025] and 2/2 IL-1RN (OR 1.75 [0.418-6.908] 86bpVNTR; GC (2.222 [0.658-8.706]) and CC IL-6 -174G>C (1.6 [0.315-8.314]) and GA (2.753 [0.828-10.64]) and AA (1.5 [0.275-8.067] IL-6 -596G>A), GA 1.509 (0.515-4.301) TNF-α -308G>A. However, these finding were not statistically significant. Conclusions Genetic factors are undeniably involved in the pathogenesis of BPD. In the times of individualised therapy finding genes responsible for BPD might allow the development of new treatment strategies. A new way of specific therapy could ensure the reduction of complications connected with BPD and treatment costs.
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Bronchopulmonary Dysplasia. Respir Med 2017. [DOI: 10.1007/978-3-319-43447-6_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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18
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Schreiner C, Schreiner F, Härtel C, Heckmann M, Heep A, Bartmann P, Woelfle J, Müller A, Herting E, Göpel W. Glucocorticoid Receptor Gene Variants and Neonatal Outcome in Very-Low-Birth-Weight Preterm Infants. Neonatology 2017; 111:22-29. [PMID: 27509264 DOI: 10.1159/000446908] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 05/18/2016] [Indexed: 11/19/2022]
Abstract
BACKGROUND Induction of lung maturation by prenatal steroid treatment has become the standard of care for pregnant women at risk for preterm birth. In addition to the beneficial effects on lung maturation, prenatal steroids have been shown to reduce the incidence of neonatal death, necrotizing enterocolitis, sepsis, and intraventricular hemorrhage. However, little is known about the role of interindividual differences in corticoid sensitivity arising from polymorphisms in the glucocorticoid receptor (GR) gene. OBJECTIVES To assess the impact of GR polymorphisms N363S (rs56149945), R23K (rs6190), and BclI (rs41423247) on neonatal outcome. METHODS The GR polymorphisms N363S, R23K, and BclI were examined in 10,490 very-low-birth-weight (VLBW) preterm infants from 49 German tertiary level neonatal units (German Neonatal Network, GNN) with respect to neonatal outcome. RESULTS Infants carrying the BclI genotype were at higher risk to develop bronchopulmonary dysplasia (BPD) (OR 1.12 per BclI allele, 95% CI: 1.02-1.23, p = 0.013) in a logistic regression model adjusted for gestational age, mechanical ventilation, and small for gestational age status. A similar relative risk was seen in the children (89.4%) who received antenatal betamethasone treatment (OR 1.16, 95% CI: 1.05-1.27, p = 0.003), whereas no such effect was detectable in infants without antenatal steroids. N363S and R23K did not show any stable association with neonatal outcome parameters. CONCLUSION Except for a slightly higher risk of BPD in carriers of the GRBclI variant, the GR gene polymorphisms BclI, N363S, and R23K did not affect neonatal outcome parameters in this large multicenter cohort of VLBW preterm infants.
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Affiliation(s)
- Christine Schreiner
- Department of Neonatology, Children's Hospital, University of Bonn, Bonn, Germany
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Marques ACDF, Albertini R, Serra AJ, da Silva EAP, de Oliveira VLC, Silva LM, Leal-Junior ECP, de Carvalho PDTC. Photobiomodulation therapy on collagen type I and III, vascular endothelial growth factor, and metalloproteinase in experimentally induced tendinopathy in aged rats. Lasers Med Sci 2016; 31:1915-1923. [PMID: 27624782 DOI: 10.1007/s10103-016-2070-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 09/05/2016] [Indexed: 12/15/2022]
Abstract
This study investigates the effect of photobiomodulation therapy (PBMT) on collagen type I and III, matrix metalloproteinase (MMP), and vascular endothelial growth factor (VEGF) in experimentally induced tendinopathy in female aged rats. Tendinopathy was induced by the Achilles tendoncollagenase peritendinous. Forty-two Wistar rats (Norvegicus albinus) were used; groups consisted of 36 aged animals (18 months old; mean body weight, 517.7 ± 27.54 g) and 6 adult animals (12 weeks old; mean body weight, 266± 19.30 g). The animals were divided into three groups: control, aged tendinopathy, and aged tendinopathy PBMT; the aged groups were subdivided based on time to euthanasia: 7, 14, and 21 days. PBMT involved a gallium-arsenide-aluminum laser (Theralaser, DMC®) with active medium operating at wavelength 830 ± 10 nm, 50 mW power, 0.028 cm2 laser beam, 107 J/cm2 energy density, 1.8 W/cm2 power density, and an energy of 3 J per point. The laser was applied by direct contact with the left Achilles tendon during 60 s per point at a frequency of three times per week, until the euthanasia date (7, 14, and 21 days). VEGF, MMP-3, and MMP-9 were analyzed by immunohistochemistry, and collagen type I and III by Sirius red. PBMT increased the deposition of collagen type I and III in a gradual manner, with significant differences relative to the group aged tendonitis (p < 0.001), and in relation to VEGF (p < 0.001); decreased expression of MMP-3 and 9 were observed in group aged tendinopathy (p < 0.001). PBMT, therefore, increased the production of collagen type I and III, downregulated the expression of MMP-3 and MMP-9, and upregulated that of VEGF, with age and age-induced hormonal deficiency.
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Affiliation(s)
- Anna Cristina de Farias Marques
- Postgraduate Program in Rehabilitation Sciences, Universidade Nove de Julho (UNINOVE), Rua Vergueiro 235, São Paulo, SP, Brazil
| | - Regiane Albertini
- Postgraduate Program in Rehabilitation Sciences, Universidade Nove de Julho (UNINOVE), Rua Vergueiro 235, São Paulo, SP, Brazil
| | - Andrey Jorge Serra
- Postgraduate Program in Biophotonics, Universidade Nove de Julho (UNINOVE), São Paulo, SP, Brazil
| | | | | | - Luciana Miatto Silva
- Postgraduate Program in Medicine, Universidade Nove de Julho (UNINOVE), São Paulo, Brazil
| | - Ernesto Cesar Pinto Leal-Junior
- Postgraduate Program in Rehabilitation Sciences, Universidade Nove de Julho (UNINOVE), Rua Vergueiro 235, São Paulo, SP, Brazil
- Postgraduate Program in Biophotonics, Universidade Nove de Julho (UNINOVE), São Paulo, SP, Brazil
| | - Paulo de Tarso Camillo de Carvalho
- Postgraduate Program in Rehabilitation Sciences, Universidade Nove de Julho (UNINOVE), Rua Vergueiro 235, São Paulo, SP, Brazil.
- Postgraduate Program in Biophotonics, Universidade Nove de Julho (UNINOVE), São Paulo, SP, Brazil.
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Rivera L, Siddaiah R, Oji-Mmuo C, Silveyra GR, Silveyra P. Biomarkers for Bronchopulmonary Dysplasia in the Preterm Infant. Front Pediatr 2016; 4:33. [PMID: 27065351 PMCID: PMC4814627 DOI: 10.3389/fped.2016.00033] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Accepted: 03/22/2016] [Indexed: 12/20/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a chronic inflammatory lung disease of very-low-birth-weight (VLBW) preterm infants, associated with arrested lung development and a need for supplemental oxygen. Over the past few decades, the incidence of BPD has significantly raised as a result of improved survival of VLBW infants requiring mechanical ventilation. While early disease detection is critical to prevent chronic lung remodeling and complications later in life, BPD is often difficult to diagnose and prevent due to the lack of good biomarkers for identification of infants at risk, and overlapping symptoms with other diseases, such as pulmonary hypertension (PH). Due to the current lack of effective treatment available for BPD and PH, research is currently focused on primary prevention strategies, and identification of biomarkers for early diagnosis, that could also represent potential therapeutic targets. In addition, novel histopathological, biochemical, and molecular factors have been identified in the lung tissue and in biological fluids of BPD and PH patients that could associate with the disease phenotype. In this review, we provide an overview of biomarkers for pediatric BPD and PH that have been identified in clinical studies using various biological fluids. We also present a brief summary of the information available on current strategies and guidelines to prevent and diagnose BPD and PH, as well as their pathophysiology, risk factors, and experimental therapies currently available.
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Affiliation(s)
- Lidys Rivera
- Department of Pediatrics, The Pennsylvania State University College of Medicine , Hershey, PA , USA
| | - Roopa Siddaiah
- Department of Pediatrics, The Pennsylvania State University College of Medicine , Hershey, PA , USA
| | - Christiana Oji-Mmuo
- Department of Pediatrics, The Pennsylvania State University College of Medicine , Hershey, PA , USA
| | - Gabriela R Silveyra
- Department of Pediatrics, The Pennsylvania State University College of Medicine , Hershey, PA , USA
| | - Patricia Silveyra
- Department of Pediatrics, The Pennsylvania State University College of Medicine, Hershey, PA, USA; Department of Biochemistry and Molecular Biology, The Pennsylvania State University College of Medicine, Hershey, PA, USA
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Abstract
The objective of this study is to review the candidate gene and genome-wide association studies relevant to bronchopulmonary dysplasia, and to discuss the emerging understanding of the complexities involved in genetic predisposition to bronchopulmonary dysplasia and its outcomes. Genetic factors contribute much of the variance in risk for BPD. Studies to date evaluating single or a few candidate genes have not been successful in yielding results that are replicated in GWAS, perhaps due to more stringent p-value thresholds. GWAS studies have identified only a single gene (SPOCK2) at genome-wide significance in a European White and African cohort, which was not replicated in two North American studies. Pathway gene-set analysis in a North American cohort confirmed involvement of known pathways of lung development and repair (e.g., CD44 and phosphorus oxygen lyase activity) and indicated novel molecules and pathways (e.g., adenosine deaminase and targets of miR-219) involved in genetic predisposition to BPD. The genetic basis of severe BPD is different from that of mild/moderate BPD, and the variants/pathways associated with BPD vary by race/ethnicity. A pilot study of whole exome sequencing identified hundreds of genes of interest, and indicated the overall feasibility as well as complexity of this approach. Better phenotyping of BPD by severity and pathophysiology, and careful analysis of race/ethnicity is required to gain a better understanding of the genetic basis of BPD. Future translational studies are required for the identification of potential genetic predispositions (rare variants and dysregulated pathways) by next-generation sequencing methods in individual infants (personalized genomics).
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Affiliation(s)
- Charitharth Vivek Lal
- Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham, 176F Suite 9380, Women and Infants Center, 619 South 19th St, Birmingham, AL 35249-7335
| | - Namasivayam Ambalavanan
- Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham, 176F Suite 9380, Women and Infants Center, 619 South 19th St, Birmingham, AL 35249-7335.
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