1
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Wang D, Guan H, Xia Y. YTHDC1 maintains trophoblasts function by promoting degradation of m6A-modified circMPP1. Biochem Pharmacol 2023; 210:115456. [PMID: 36780989 DOI: 10.1016/j.bcp.2023.115456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 02/07/2023] [Accepted: 02/09/2023] [Indexed: 02/13/2023]
Abstract
N6-methyladenosine (m6A) is the most abundant mRNA internal modification in eukaryotic mRNAs. This study focuses on the effect of circMPP1 on placental villi function and the molecular mechanism. First, differentially expressed circular RNAs (circRNAs) in placenta tissues of large-for-gestational-age(LGA) neonates were screened by m6A-circRNA Epitranscriptomic Microarray and bioinformatics analyses. The abnormal expression of circMPP1 in placental tissues and cell lines was validated by RT-qPCR. In-vitro and in-vivo functional experiments were performed to evaluate the role of circMPP1 in placental impairment and fetal dysplasia. The interacting proteins of circMPP1 were identified and validated using RNA pull-down, RNA immunoprecipitation, fluorescence in situ hybridization, and immunofluorescence experiments. Protein interactions and expression levels were detected by Co-immunoprecipitation and western blot analysis. The m6A modification in circMPP1 was verified by methylated RNA immunoprecipitation assay. Bioinformatics analyses showed that circMPP1 was highly expressed in tissues with disordered placental function. In-vitro and in-vivo functional experiments showed that circMPP1 inhibited the function of placental villi. Further mechanism analyses showed that circMPP1 activated the NF-kappa B and MAPK3 signaling pathways. In addition, the m6A "reader" protein YTHDC1 was found to reduce circMPP1 expression via m6A modification. In conclusion, this study demonstrates that YTHDC1 maintains trophoblasts function by promoting degradation of m6A-mediated circMPP1.
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Affiliation(s)
- Dan Wang
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
| | - Hongbo Guan
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110001, Liaoning Province, China.
| | - Yajun Xia
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
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2
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Chang JL, Gong J, Rizal S, Peterson AL, Chang J, Yao C, Dennery PA, Yao H. Upregulating carnitine palmitoyltransferase 1 attenuates hyperoxia-induced endothelial cell dysfunction and persistent lung injury. Respir Res 2022; 23:205. [PMID: 35964084 PMCID: PMC9375342 DOI: 10.1186/s12931-022-02135-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 08/09/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Bronchopulmonary dysplasia (BPD) is a chronic lung disease in premature infants that may cause long-term lung dysfunction. Accumulating evidence supports the vascular hypothesis of BPD, in which lung endothelial cell dysfunction drives this disease. We recently reported that endothelial carnitine palmitoyltransferase 1a (Cpt1a) is reduced by hyperoxia, and that endothelial cell-specific Cpt1a knockout mice are more susceptible to developing hyperoxia-induced injury than wild type mice. Whether Cpt1a upregulation attenuates hyperoxia-induced endothelial cell dysfunction and lung injury remains unknown. We hypothesized that upregulation of Cpt1a by baicalin or L-carnitine ameliorates hyperoxia-induced endothelial cell dysfunction and persistent lung injury. METHODS Lung endothelial cells or newborn mice (< 12 h old) were treated with baicalin or L-carnitine after hyperoxia (50% and 95% O2) followed by air recovery. RESULTS We found that incubation with L-carnitine (40 and 80 mg/L) and baicalin (22.5 and 45 mg/L) reduced hyperoxia-induced apoptosis, impaired cell migration and angiogenesis in cultured lung endothelial cells. This was associated with increased Cpt1a gene expression. In mice, neonatal hyperoxia caused persistent alveolar and vascular simplification in a concentration-dependent manner. Treatment with L-carnitine (150 and 300 mg/kg) and baicalin (50 and 100 mg/kg) attenuated neonatal hyperoxia-induced alveolar and vascular simplification in adult mice. These effects were diminished in endothelial cell-specific Cpt1a knockout mice. CONCLUSIONS Upregulating Cpt1a by baicalin or L-carnitine ameliorates hyperoxia-induced lung endothelial cell dysfunction, and persistent alveolar and vascular simplification. These findings provide potential therapeutic avenues for using L-carnitine and baicalin as Cpt1a upregulators to prevent persistent lung injury in premature infants with BPD.
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Affiliation(s)
- Jason L Chang
- Division of Biology and Medicine, Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, 185 Meeting Street, SFH, Providence, RI, 02912, USA
| | - Jiannan Gong
- Division of Biology and Medicine, Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, 185 Meeting Street, SFH, Providence, RI, 02912, USA
- Department of Respiratory Medicine, Second Hospital of Shanxi Medical University, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Salu Rizal
- Division of Biology and Medicine, Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, 185 Meeting Street, SFH, Providence, RI, 02912, USA
| | - Abigail L Peterson
- Division of Biology and Medicine, Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, 185 Meeting Street, SFH, Providence, RI, 02912, USA
| | - Julia Chang
- Division of Biology and Medicine, Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, 185 Meeting Street, SFH, Providence, RI, 02912, USA
| | - Chenrui Yao
- Division of Biology and Medicine, Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, 185 Meeting Street, SFH, Providence, RI, 02912, USA
| | - Phyllis A Dennery
- Division of Biology and Medicine, Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, 185 Meeting Street, SFH, Providence, RI, 02912, USA
- Department of Pediatrics, Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Hongwei Yao
- Division of Biology and Medicine, Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, 185 Meeting Street, SFH, Providence, RI, 02912, USA.
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3
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Guo D, Lin C, Lu Y, Guan H, Qi W, Zhang H, Shao Y, Zeng C, Zhang R, Zhang H, Bai X, Cai D. FABP4 secreted by M1-polarized macrophages promotes synovitis and angiogenesis to exacerbate rheumatoid arthritis. Bone Res 2022; 10:45. [PMID: 35729106 PMCID: PMC9213409 DOI: 10.1038/s41413-022-00211-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 03/10/2022] [Accepted: 03/20/2022] [Indexed: 12/15/2022] Open
Abstract
Increasing evidence shows that adipokines play a vital role in the development of rheumatoid arthritis (RA). Fatty acid-binding protein 4 (FABP4), a novel adipokine that regulates inflammation and angiogenesis, has been extensively studied in a variety of organs and diseases. However, the effect of FABP4 on RA remains unclear. Here, we found that FABP4 expression was upregulated in synovial M1-polarized macrophages in RA. The increase in FABP4 promoted synovitis, angiogenesis, and cartilage degradation to exacerbate RA progression in vivo and in vitro, whereas BMS309403 (a FABP4 inhibitor) and anagliptin (dipeptidyl peptidase 4 inhibitor) inhibited FABP4 expression in serum and synovial M1-polarized macrophages in mice to alleviate RA progression. Further studies showed that constitutive activation of mammalian target of rapamycin complex 1 (mTORC1) by TSC1 deletion specifically in the myeloid lineage regulated FABP4 expression in macrophages to exacerbate RA progression in mice. In contrast, inhibition of mTORC1 by ras homolog enriched in brain (Rheb1) disruption specifically in the myeloid lineage reduced FABP4 expression in macrophages to attenuate RA development in mice. Our findings established an essential role of FABP4 that is secreted by M1-polarized macrophages in synovitis, angiogenesis, and cartilage degradation in RA. BMS309403 and anagliptin inhibited FABP4 expression in synovial M1-polarized macrophages to alleviate RA development. Hence, FABP4 may represent a potential target for RA therapy.
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Affiliation(s)
- Dong Guo
- Department of Joint Surgery, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics, Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Chuangxin Lin
- Department of Orthopedic Surgery, Shantou Central Hospital, Affiliated Shantou Hospital of Sun Yat-sen University, Shantou, China
| | - Yuheng Lu
- Department of Joint Surgery, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics, Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Hong Guan
- Department of Joint Surgery, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics, Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Weizhong Qi
- Department of Joint Surgery, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics, Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Hongbo Zhang
- Department of Joint Surgery, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics, Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Yan Shao
- Department of Joint Surgery, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics, Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Chun Zeng
- Department of Joint Surgery, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics, Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Rongkai Zhang
- Department of Joint Surgery, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics, Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Haiyan Zhang
- Department of Joint Surgery, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China. .,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics, Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China. .,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China. .,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China.
| | - Xiaochun Bai
- Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China. .,State Key Laboratory of Organ Failure Research, Department of Cell Biology, Southern Medical University School of Basic Medical Sciences, Guangzhou, China.
| | - Daozhang Cai
- Department of Joint Surgery, Center for Orthopedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China. .,Department of Orthopedics, Orthopedic Hospital of Guangdong Province, Academy of Orthopedics, Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China. .,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China. .,Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China.
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4
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Donda K, Maheshwari A. Human Milk Lipids Induce Important Metabolic and Epigenetic Changes in Neonates. Clin Perinatol 2022; 49:331-353. [PMID: 35659090 PMCID: PMC9179119 DOI: 10.1016/j.clp.2022.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Lipids are a major source of energy during the fetal/neonatal period. Most are received from the mother, transplacentally during the intrauterine period or via maternal milk after birth. However, in addition to the known nutritional roles, lipids are now known to bind a variety of cellular receptors to regulate specific patterns in metabolism and gene expression. The expression of these receptors is regulated by various genetic and environmental stimuli, and ligation can activate positive-feedback loops in the expression and the activity of downstream signaling pathways. The authors summarize the role of lipid ligands, cognate receptors, epigenetic regulation, and downstream signaling.
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Affiliation(s)
- Keyur Donda
- Department of Pediatrics, University of South Florida Health Morsani College of Medicine, Tampa, FL, USA
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5
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Gilfillan M, Bhandari V. Moving Bronchopulmonary Dysplasia Research from the Bedside to the Bench. Am J Physiol Lung Cell Mol Physiol 2022; 322:L804-L821. [PMID: 35437999 DOI: 10.1152/ajplung.00452.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Although advances in the respiratory management of extremely preterm infants have led to improvements in survival, this progress has not yet extended to a reduction in the incidence of bronchopulmonary dysplasia (BPD). BPD is a complex multifactorial condition that primarily occurs due to disturbances in the regulation of normal pulmonary airspace and vascular development. Preterm birth and exposure to invasive mechanical ventilation also compromises large airway development, leading to significant morbidity and mortality. Although both predisposing and protective genetic and environmental factors have been frequently described in the clinical literature, these findings have had limited impact on the development of effective therapeutic strategies. This gap is likely because the molecular pathways that underlie these observations are yet not fully understood, limiting the ability of researchers to identify novel treatments that can preserve normal lung development and/or enhance cellular repair mechanisms. In this review article, we will outline various well-established clinical observations whilst identifying key knowledge gaps that need to be filled with carefully designed pre-clinical experiments. We will address these issues by discussing controversial topics in the pathophysiology, the pathology and the treatment of BPD, including an evaluation of existing animal models that have been used to answer important questions.
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Affiliation(s)
- Margaret Gilfillan
- Division of Neonatology, St. Christopher's Hospital for Children/Drexel University College of Medicine, Philadelphia, PA
| | - Vineet Bhandari
- Division of Neonatology, The Children's Regional Hospital at Cooper/Cooper Medical School of Rowan University, Camden, NJ
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6
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Lung function between 8 and 15 years of age in very preterm infants with fetal growth restriction. Pediatr Res 2021; 90:657-663. [PMID: 33469172 DOI: 10.1038/s41390-020-01299-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 09/30/2020] [Accepted: 11/10/2020] [Indexed: 01/29/2023]
Abstract
BACKGROUND The impact of intrauterine growth restriction (IUGR) on lung function in very preterm children is largely unknown as current evidence is mainly based on studies in children born small for gestational age but not necessarily with IUGR. METHODS Spirometry, transfer factor of the lung for carbon monoxide (TLco), and lung clearance index (LCI) were cross-sectionally evaluated at 8.0-15.0 years of age in children born <32 weeks of gestation with IUGR (n = 28) and without IUGR (n = 67). Controls born at term (n = 67) were also included. RESULTS Very preterm children with IUGR had lower mean forced expired volume in the first second (FEV1) z-score than those with normal fetal growth (∆ -0.66, 95% confidence interval (CI) -1.12, -0.19), but not significant differences in LCI (∆ +0.24, 95% CI -0.09, 0.56) and TLco z-score (∆ -0.11, 95% CI -0.44, 0.23). The frequency of bronchopulmonary dysplasia (BPD) in the two groups was, respectively, 43% and 10% (P = 0.003). IUGR was negatively associated with FEV1 (B = -0.66; P = 0.004), but the association lost significance (P = 0.05) when adjusting for BPD. CONCLUSIONS IUGR has an impact on conducting airways function of very preterm children at school age, with part of this effect being mediated by BPD. Ventilation inhomogeneity and diffusing capacity, instead, were not affected. IMPACT IUGR does not necessarily imply a low birthweight for gestational age (and vice versa). While a low birthweight is associated with worse respiratory outcomes, the impact of IUGR on lung function in premature children is largely unknown. IUGR affects conducting airways function in school-age children born <32 weeks with IUGR, but not ventilation inhomogeneity and diffusing capacity. The impact of IUGR on FEV1 seems mainly related to the higher risk of BPD in this group.
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7
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Yue L, Lu X, Dennery PA, Yao H. Metabolic dysregulation in bronchopulmonary dysplasia: Implications for identification of biomarkers and therapeutic approaches. Redox Biol 2021; 48:102104. [PMID: 34417157 PMCID: PMC8710987 DOI: 10.1016/j.redox.2021.102104] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 08/11/2021] [Accepted: 08/12/2021] [Indexed: 12/03/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a common chronic lung disease in premature infants. Accumulating evidence shows that dysregulated metabolism of glucose, lipids and amino acids are observed in premature infants. Animal and cell studies demonstrate that abnormal metabolism of these substrates results in apoptosis, inflammation, reduced migration, abnormal proliferation or senescence in response to hyperoxic exposure, and that rectifying metabolic dysfunction attenuates neonatal hyperoxia-induced alveolar simplification and vascular dysgenesis in the lung. BPD is often associated with several comorbidities, including pulmonary hypertension and neurodevelopmental abnormalities, which significantly increase the morbidity and mortality of this disease. Here, we discuss recent progress on dysregulated metabolism of glucose, lipids and amino acids in premature infants with BPD and in related in vivo and in vitro models. These findings suggest that metabolic dysregulation may serve as a biomarker of BPD and plays important roles in the pathogenesis of this disease. We also highlight that targeting metabolic pathways could be employed in the prevention and treatment of BPD.
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Affiliation(s)
- Li Yue
- Department of Orthopedics, Warren Alpert Medical School of Brown University and Rhode Island Hospital, Providence, RI, USA
| | - Xuexin Lu
- Department of Pediatrics, Ascension St. John Hospital, Detroit, MI, USA
| | - Phyllis A Dennery
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, USA; Department of Pediatrics, Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Hongwei Yao
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, USA.
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8
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Mou Q, Ji B, Zhao G, Liu Y, Sakurai R, Xie Y, Zhang Q, Dai J, Lu Y, Ge Y, Shi T, Xu S, Rehan VK. Effect of electro-acupuncture at ST 36 on maternal food restriction-induced lung phenotype in rat offspring. Pediatr Pulmonol 2021; 56:2537-2545. [PMID: 34033703 PMCID: PMC9231565 DOI: 10.1002/ppul.25466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/03/2021] [Accepted: 05/04/2021] [Indexed: 11/06/2022]
Abstract
Maternal food restriction (MFR) during pregnancy leads to pulmonary dysplasia in the newborn period and increases susceptibility to diseases, such as asthma and chronic lung disease, later in life. Previous studies have shown that maternal electro-acupuncture (EA) applied to "Zusanli" (ST 36) could prevent the abnormal expression of key lung developmental signaling pathways and improve the lung morphology and function in perinatal nicotine exposed offspring. There is a significant overlap in lung developmental signaling pathways affected by perinatal nicotine exposure and MFR during pregnancy; however, whether maternal EA at ST 36 also blocks the MFR-induced lung phenotype is unknown. Here, we examined the effects of EA applied to maternal ST 36 on lung morphology and function and the expression of key lung developmental signaling pathways, and the hypercorticoid state associated with MFR during pregnancy. These effects were compared with those of metyrapone, an intervention known to block MFR-induced offspring hypercorticoid state and the resultant pulmonary pathology. Like metyrapone, maternal EA at ST 36 blocked the MFR-induced changes in key developmental signaling pathways and protected the MFR-induced changes in lung morphology and function. These results offer a novel and safe, nonpharmacologic approach to prevent MFR-induced pulmonary dysplasia in offspring.
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Affiliation(s)
- Qiujie Mou
- Beijing University of Chinese Medicine, Beijing, China
| | - Bo Ji
- Beijing University of Chinese Medicine, Beijing, China
| | - Guozhen Zhao
- Beijing University of Chinese Medicine, Beijing, China.,Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, Beijing, China
| | - Yitian Liu
- Beijing University of Chinese Medicine, Beijing, China
| | - Reiko Sakurai
- Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, David Geffen School of Medicine, Torrance, California, USA
| | - Yana Xie
- Beijing University of Chinese Medicine, Beijing, China
| | - Qin Zhang
- Beijing University of Chinese Medicine, Beijing, China
| | - Jian Dai
- Beijing University of Chinese Medicine, Beijing, China
| | - Yawen Lu
- Beijing University of Chinese Medicine, Beijing, China
| | - Yunpeng Ge
- Beijing University of Chinese Medicine, Beijing, China
| | - Tianyu Shi
- Beijing University of Chinese Medicine, Beijing, China
| | - Shuang Xu
- Beijing University of Chinese Medicine, Beijing, China
| | - Virender K Rehan
- Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, David Geffen School of Medicine, Torrance, California, USA
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9
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Guillier C, Carrière D, Pansiot J, Maroni A, Billion E, Ringot M, Benoist JF, Jacques S, Matrot B, Jarreau PH, Vaiman D, Baud O, Zana-Taïeb E. Nebulized curcumin protects neonatal lungs from antenatal insult in rats. Am J Physiol Lung Cell Mol Physiol 2021; 321:L545-L552. [PMID: 34159801 DOI: 10.1152/ajplung.00195.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Intrauterine growth restriction (IUGR) increases the risk of bronchopulmonary dysplasia (BPD), one of the major complications of prematurity. Antenatal low-protein diet (LPD) exposure in rats induces IUGR and mimics BPD-related alveolarization disorders. Peroxisome proliferator-activated receptor-γ (PPARγ) plays a key role in normal lung development and was found deregulated following LPD exposure. The objective of this article was to investigate the effects of nebulized curcumin, a natural PPARγ agonist, to prevent IUGR-related abnormal lung development. We studied rat pups antenatally exposed to an LPD or control diet (CTL) and treated with nebulized curcumin (50 mg/kg) or vehicle from postnatal (P) days 1 to 5. The primary readouts were lung morphometric analyses at P21. Immunohistochemistry (P21) and microarrays (P6 and P11) were compared within animals exposed to LPD versus controls, with and without curcumin treatment. Quantitative morphometric analyses revealed that LPD induced abnormal alveolarization as evidenced by a significant increase in mean linear intercept (MLI) observed in P21 LPD-exposed animals. Early curcumin treatment prevented this effect, and two-way ANOVA analysis demonstrated significant interaction between diet and curcumin both for MLI [F(1,39) = 12.67, P = 0.001] and radial alveolar count at P21 [F(1,40) = 6.065, P = 0.0182]. Immunohistochemistry for fatty acid binding protein 4 (FABP4), a major regulator of PPARγ pathway, showed a decreased FABP4+ alveolar cell density in LPD-exposed animals treated by curcumin. Transcriptomic analysis showed that early curcumin significantly prevented the activation of profibrotic pathways observed at P11 in LPD-exposed animals. Nebulized curcumin appears to be a promising strategy to prevent alveolarization disorders in IUGR rat pups, targeting pathways involved in lung development.
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Affiliation(s)
- Cyril Guillier
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Assistance Publique-Hôpitaux de Paris, Service de Médecine et Réanimation néonatales de Port-Royal, Paris, France.,Université Paris Descartes, Paris, France
| | - Diane Carrière
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Assistance Publique-Hôpitaux de Paris, Service de Médecine et Réanimation néonatales de Port-Royal, Paris, France.,Université Paris Descartes, Paris, France
| | - Julien Pansiot
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Université Paris Diderot, Paris, France
| | - Arielle Maroni
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Université Paris Descartes, Paris, France
| | - Elodie Billion
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Assistance Publique-Hôpitaux de Paris, Service de Médecine et Réanimation néonatales de Port-Royal, Paris, France.,Université Paris Descartes, Paris, France
| | - Maud Ringot
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Université Paris Diderot, Paris, France
| | - Jean-François Benoist
- Assistance Publique-Hôpitaux de Paris, Service de Biochimie-Hormonologie, Hôpital Robert Debré, Paris, France
| | - Sébastien Jacques
- Genom'ic. INSERM U1016, Centre National de la Recherche Scientifique (CNRS) Unite Mixte de Recherche (UMR) 8104, Paris, France
| | - Boris Matrot
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Université Paris Diderot, Paris, France
| | - Pierre-Henri Jarreau
- Assistance Publique-Hôpitaux de Paris, Service de Médecine et Réanimation néonatales de Port-Royal, Paris, France.,Université Paris Descartes, Paris, France.,Fondation PremUp, Paris, France.,Université de Paris, Epidemiology and Statistics Research Center (CRESS), INSERM, Institut national de la recherche agronomique (INRA), Paris, France
| | - Daniel Vaiman
- Institut Cochin, Inserm U1016-CNRS UMRS 104, Paris, France
| | - Olivier Baud
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Université Paris Diderot, Paris, France.,Assistance Publique-Hôpitaux de Paris, Service de Réanimation et Pédiatrie néonatales, Hôpital Robert Debré, Paris, France.,Division of Neonatology and Pediatric Intensive Care, Children's University Hospital of Geneva and University of Geneva, Geneva, Switzerland
| | - Elodie Zana-Taïeb
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1141, Paris, France.,Assistance Publique-Hôpitaux de Paris, Service de Médecine et Réanimation néonatales de Port-Royal, Paris, France.,Fondation PremUp, Paris, France
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10
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Endothelial Progenitor Cells Dysfunctions and Cardiometabolic Disorders: From Mechanisms to Therapeutic Approaches. Int J Mol Sci 2021; 22:ijms22136667. [PMID: 34206404 PMCID: PMC8267891 DOI: 10.3390/ijms22136667] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/10/2021] [Accepted: 06/17/2021] [Indexed: 12/12/2022] Open
Abstract
Metabolic syndrome (MetS) is a cluster of several disorders, such as hypertension, central obesity, dyslipidemia, hyperglycemia, insulin resistance and non-alcoholic fatty liver disease. Despite health policies based on the promotion of physical exercise, the reduction of calorie intake and the consumption of healthy food, there is still a global rise in the incidence and prevalence of MetS in the world. This phenomenon can partly be explained by the fact that adverse events in the perinatal period can increase the susceptibility to develop cardiometabolic diseases in adulthood. Individuals born after intrauterine growth restriction (IUGR) are particularly at risk of developing cardiovascular diseases (CVD) and metabolic disorders later in life. It has been shown that alterations in the structural and functional integrity of the endothelium can lead to the development of cardiometabolic diseases. The endothelial progenitor cells (EPCs) are circulating components of the endothelium playing a major role in vascular homeostasis. An association has been found between the maintenance of endothelial structure and function by EPCs and their ability to differentiate and repair damaged endothelial tissue. In this narrative review, we explore the alterations of EPCs observed in individuals with cardiometabolic disorders, describe some mechanisms related to such dysfunction and propose some therapeutical approaches to reverse the EPCs dysfunction.
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11
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Ruano CSM, Apicella C, Jacques S, Gascoin G, Gaspar C, Miralles F, Méhats C, Vaiman D. Alternative splicing in normal and pathological human placentas is correlated to genetic variants. Hum Genet 2021; 140:827-848. [PMID: 33433680 PMCID: PMC8052246 DOI: 10.1007/s00439-020-02248-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 12/14/2020] [Indexed: 12/11/2022]
Abstract
Two major obstetric diseases, preeclampsia (PE), a pregnancy-induced endothelial dysfunction leading to hypertension and proteinuria, and intra-uterine growth-restriction (IUGR), a failure of the fetus to acquire its normal growth, are generally triggered by placental dysfunction. Many studies have evaluated gene expression deregulations in these diseases, but none has tackled systematically the role of alternative splicing. In the present study, we show that alternative splicing is an essential feature of placental diseases, affecting 1060 and 1409 genes in PE vs controls and IUGR vs controls, respectively, many of those involved in placental function. While in IUGR placentas, alternative splicing affects genes specifically related to pregnancy, in preeclamptic placentas, it impacts a mix of genes related to pregnancy and brain diseases. Also, alternative splicing variations can be detected at the individual level as sharp splicing differences between different placentas. We correlate these variations with genetic variants to define splicing Quantitative Trait Loci (sQTL) in the subset of the 48 genes the most strongly alternatively spliced in placental diseases. We show that alternative splicing is at least partly piloted by genetic variants located either in cis (52 QTL identified) or in trans (52 QTL identified). In particular, we found four chromosomal regions that impact the splicing of genes in the placenta. The present work provides a new vision of placental gene expression regulation that warrants further studies.
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Affiliation(s)
- Camino S M Ruano
- Université de Paris, Institut Cochin, Inserm U1016, CNRS, 24 rue du Faubourg St Jacques, 75014, Paris, France
| | - Clara Apicella
- Université de Paris, Institut Cochin, Inserm U1016, CNRS, 24 rue du Faubourg St Jacques, 75014, Paris, France
| | - Sébastien Jacques
- Université de Paris, Institut Cochin, Inserm U1016, CNRS, 24 rue du Faubourg St Jacques, 75014, Paris, France
| | - Géraldine Gascoin
- Unité Mixte de Recherche MITOVASC, Équipe Mitolab, CNRS 6015, INSERM U1083, Université d'Angers, Angers, France
- Réanimation et Médecine Néonatales, Centre Hospitalier Universitaire, Angers, France
| | - Cassandra Gaspar
- Sorbonne Université, Inserm, UMS Production et Analyse des Données en Sciences de la vie et en Santé, PASS, Plateforme Post-génomique de la Pitié-Salpêtrière, P3S, 75013, Paris, France
| | - Francisco Miralles
- Université de Paris, Institut Cochin, Inserm U1016, CNRS, 24 rue du Faubourg St Jacques, 75014, Paris, France
| | - Céline Méhats
- Université de Paris, Institut Cochin, Inserm U1016, CNRS, 24 rue du Faubourg St Jacques, 75014, Paris, France
| | - Daniel Vaiman
- Université de Paris, Institut Cochin, Inserm U1016, CNRS, 24 rue du Faubourg St Jacques, 75014, Paris, France.
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12
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Gong J, Feng Z, Peterson AL, Carr JF, Lu X, Zhao H, Ji X, Zhao YY, De Paepe ME, Dennery PA, Yao H. The pentose phosphate pathway mediates hyperoxia-induced lung vascular dysgenesis and alveolar simplification in neonates. JCI Insight 2021; 6:137594. [PMID: 33497360 PMCID: PMC8021105 DOI: 10.1172/jci.insight.137594] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 01/20/2021] [Indexed: 01/02/2023] Open
Abstract
Dysmorphic pulmonary vascular growth and abnormal endothelial cell (EC) proliferation are paradoxically observed in premature infants with bronchopulmonary dysplasia (BPD), despite vascular pruning. The pentose phosphate pathway (PPP), a metabolic pathway parallel to glycolysis, generates NADPH as a reducing equivalent and ribose 5-phosphate for nucleotide synthesis. It is unknown whether hyperoxia, a known mediator of BPD in rodent models, alters glycolysis and the PPP in lung ECs. We hypothesized that hyperoxia increases glycolysis and the PPP, resulting in abnormal EC proliferation and dysmorphic angiogenesis in neonatal mice. To test this hypothesis, lung ECs and newborn mice were exposed to hyperoxia and allowed to recover in air. Hyperoxia increased glycolysis and the PPP. Increased PPP, but not glycolysis, caused hyperoxia-induced abnormal EC proliferation. Blocking the PPP reduced hyperoxia-induced glucose-derived deoxynucleotide synthesis in cultured ECs. In neonatal mice, hyperoxia-induced abnormal EC proliferation, dysmorphic angiogenesis, and alveolar simplification were augmented by nanoparticle-mediated endothelial overexpression of phosphogluconate dehydrogenase, the second enzyme in the PPP. These effects were attenuated by inhibitors of the PPP. Neonatal hyperoxia augments the PPP, causing abnormal lung EC proliferation, dysmorphic vascular development, and alveolar simplification. These observations provide mechanisms and potential metabolic targets to prevent BPD-associated vascular dysgenesis.
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Affiliation(s)
- Jiannan Gong
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, Rhode Island, USA
- Department of Respiratory and Critical Care Medicine, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Zihang Feng
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, Rhode Island, USA
| | - Abigail L. Peterson
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, Rhode Island, USA
| | - Jennifer F. Carr
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, Rhode Island, USA
| | - Xuexin Lu
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, Rhode Island, USA
| | - Haifeng Zhao
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, Rhode Island, USA
| | - Xiangming Ji
- Department of Nutrition, Byrdine F. Lewis School of Nursing and Health Professions, Georgia State University, Atlanta, Georgia, USA
| | - You-Yang Zhao
- Program for Lung and Vascular Biology, Stanley Manne Children’s Research Institute, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois, USA
- Departments of Pediatrics (Critical Care Division), Pharmacology, and Medicine (Pulmonary and Critical Care Medicine), Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Monique E. De Paepe
- Department of Pathology, Women and Infants Hospital, Providence, Rhode Island, USA
| | - Phyllis A. Dennery
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, Rhode Island, USA
- Department of Pediatrics, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Hongwei Yao
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, Rhode Island, USA
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13
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Intrauterine growth restriction: Clinical consequences on health and disease at adulthood. Reprod Toxicol 2021; 99:168-176. [DOI: 10.1016/j.reprotox.2020.10.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/01/2020] [Accepted: 10/04/2020] [Indexed: 02/06/2023]
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14
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Ivanovska J, Kang NYC, Ivanovski N, Nagy A, Belik J, Gauda EB. Recombinant adiponectin protects the newborn rat lung from lipopolysaccharide-induced inflammatory injury. Physiol Rep 2020; 8:e14553. [PMID: 32889775 PMCID: PMC7507528 DOI: 10.14814/phy2.14553] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 07/24/2020] [Accepted: 07/25/2020] [Indexed: 02/06/2023] Open
Abstract
Preterm infants are at high risk for developing bronchopulmonary dysplasia and pulmonary hypertension from inflammatory lung injury. In adult models, adiponectin (APN)—an adipocyte‐derived hormone—protects the lung from inflammatory injury and pulmonary vascular remodeling. Cord blood APN levels in premature infants born < 26 weeks gestation are 5% of the level in infants born at term. We previously reported the expression profile of APN and its receptors in neonatal rat lung homogenates during the first 3 weeks of postnatal development. Here, we characterize the expression profile of APN and its receptors in specific lung cells and the effects of exogenous recombinant APN (rAPN) on lipopolysaccharide‐(LPS)‐induced cytokine and chemokine production in total lung homogenates and specific lung cells. In vitro, rAPN added to primary cultures of pulmonary artery smooth muscle cells attenuated the expression of LPS‐induced pro‐inflammatory cytokines while increasing the expression of anti‐inflammatory cytokines. In vivo, intraperitoneal rAPN (2 mg/kg), given 4 hr prior to intrapharyngeal administration of LPS (5 mg/kg) to newborn rats at postnatal day 4, significantly reduced gene and protein expression of the pro‐inflammatory cytokine IL‐1ß and reduced protein expression of the chemokines monocyte chemoattractant protein (MCP‐1) and macrophage inflammatory protein‐1 alpha (MIP‐1α) in the lung. LPS‐induced histopathological changes in the lung were also decreased. Moreover, rAPN given 20 hr after intrapharyngeal LPS had a similar effect on lung inflammation. These findings suggest a role for APN in protecting the lung from inflammation during early stages of lung development.
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Affiliation(s)
- Julijana Ivanovska
- The Hospital for Sick Children, Division of Neonatology, Department of Pediatrics and Translational Medicine Program, University of Toronto, Toronto, ON, Canada
| | - Na-Young Cindy Kang
- The Hospital for Sick Children, Division of Neonatology, Department of Pediatrics and Translational Medicine Program, University of Toronto, Toronto, ON, Canada
| | - Nikola Ivanovski
- The Hospital for Sick Children, Division of Neonatology, Department of Pediatrics and Translational Medicine Program, University of Toronto, Toronto, ON, Canada
| | - Avita Nagy
- Department of Pediatric Laboratory Medicine, University of Toronto, Toronto, ON, Canada
| | - Jaques Belik
- The Hospital for Sick Children, Division of Neonatology, Department of Pediatrics and Translational Medicine Program, University of Toronto, Toronto, ON, Canada
| | - Estelle B Gauda
- The Hospital for Sick Children, Division of Neonatology, Department of Pediatrics and Translational Medicine Program, University of Toronto, Toronto, ON, Canada
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15
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Rocha G, de Lima FF, Machado AP, Guimarães H, Proença E, Carvalho C, Martins LG, Martins T, Freitas A, Dias CP, Silva A, Barroso A, Diogo I, Cassiano G, Ramos H, Abrantes MM, Costa P, Salazar A, Vieira F, Fontes D, Barroso R, Marques T, Santos V, Scortenschi E, Santos C, Vilela F, Quintas C. Small for gestational age very preterm infants present a higher risk of developing bronchopulmonary dysplasia. J Neonatal Perinatal Med 2020; 12:419-427. [PMID: 31256077 DOI: 10.3233/npm-180129] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Several studies assessed the influence of a low birth weight on bronchopulmonary dysplasia (BPD), but not all could find a significant association. Our aim was to assess the association between low birth weight and BPD in preterm infants, prospectively recruited at 11 level III Portuguese neonatal centers. METHODS Obstetrical and neonatal data on mothers and preterm infants with gestational ages between 24 and 30 weeks, born during 2015 and 2016 after a surveilled pregnancy, were analyzed. Neonates were considered small for gestational age (SGA) when their birthweight was below the 10th centile of Fenton's growth chats and BPD was defined as the dependency for oxygen therapy until 36 weeks of corrected age. Statistical analysis was performed using IBM SPSS® statistics 23 and a p-value <0.05 was considered statistically significant. RESULTS Out of 614, a total of 494 preterm infants delivered from 410 women were enrolled in the study; 40 (8.0%) infants with SGA criteria. SGA were more often associated with a single pregnancy, had greater use of antenatal corticosteroids, increased prevalence of gestational hypertensive disorders, C-section, rupture of membranes below 18 hours, rate of intubation in the delivery room, use of surfactant treatment, oxygen therapy, mechanical ventilation need, BPD, cystic periventricular leukomalacia, nosocomial sepsis and pneumonia; had lower prevalence of chorioamnionitis, and lower Apgar scores. The multivariate analysis by logistic regression, adjusted for BPD risk factors revealed a significant association between SGA and BPD: OR = 5.2 [CI: 1.46-18.58]; p = 0.01. CONCLUSION The results of this study increase the scientific evidence that SGA is an independent risk factor for BPD.
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Affiliation(s)
- G Rocha
- Department of Neonatology, Centro Hospitalar São João, Porto, Portugal
| | - F Flor de Lima
- Department of Neonatology, Centro Hospitalar São João, Porto, Portugal.,Faculty of Medicine, University of Porto, Porto, Portugal
| | - A Paula Machado
- Department of Obstetrics and Gynaecology, Centro Hospitalar São João, Porto, Portugal
| | - H Guimarães
- Department of Neonatology, Centro Hospitalar São João, Porto, Portugal.,Faculty of Medicine, University of Porto, Porto, Portugal
| | - E Proença
- Centro Materno Infantil do Norte, Porto, Portugal
| | - C Carvalho
- Centro Materno Infantil do Norte, Porto, Portugal
| | - L G Martins
- Centro Materno Infantil do Norte, Porto, Portugal
| | - T Martins
- Hospital Pedro Hispâno, Matosinhos, Portugal
| | - A Freitas
- Hospital da Senhora da Oliveira, Guimarães, Portugal
| | - C P Dias
- Hospital da Senhora da Oliveira, Guimarães, Portugal
| | - A Silva
- Hospital de Braga, Braga, Portugal
| | | | - I Diogo
- Centro Hospitalar Lisboa Central, Maternidade Dr Alfredo da Costa, Lisboa, Portugal
| | - G Cassiano
- Centro Hospitalar Lisboa Central, Maternidade Dr Alfredo da Costa, Lisboa, Portugal
| | - H Ramos
- Centro Hospitalar Lisboa Central, Maternidade Dr Alfredo da Costa, Lisboa, Portugal
| | - M M Abrantes
- Centro Hospitalar Lisboa Norte, Hospital de Santa Maria, Lisboa, Portugal
| | - P Costa
- Centro Hospitalar Lisboa Norte, Hospital de Santa Maria, Lisboa, Portugal
| | - A Salazar
- Centro Hospitalar Lisboa Ocidental, Hospital São Francisco Xavier, Lisboa, Portugal
| | - F Vieira
- Centro Hospitalar Lisboa Ocidental, Hospital São Francisco Xavier, Lisboa, Portugal
| | - D Fontes
- Centro Hospitalar Lisboa Ocidental, Hospital São Francisco Xavier, Lisboa, Portugal
| | - R Barroso
- Hospital Prof. Dr Fernando Fonseca, Amadora, Portugal
| | - T Marques
- Hospital Prof. Dr Fernando Fonseca, Amadora, Portugal
| | - V Santos
- Centro Hospitalar do Algarve, Hospital de Faro, Faro, Portugal
| | - E Scortenschi
- Centro Hospitalar do Algarve, Hospital de Faro, Faro, Portugal
| | - C Santos
- Centro Hospitalar do Algarve, Hospital de Faro, Faro, Portugal
| | - F Vilela
- Centro Hospitalar do Algarve, Hospital de Faro, Faro, Portugal
| | - C Quintas
- Centro Hospitalar de Vila Nova de Gaia/Espinho, Hospital de Vila Nova de Gaia, Vila Nova de Gaia, Portugal
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16
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Yao H, Gong J, Peterson AL, Lu X, Zhang P, Dennery PA. Fatty Acid Oxidation Protects against Hyperoxia-induced Endothelial Cell Apoptosis and Lung Injury in Neonatal Mice. Am J Respir Cell Mol Biol 2020; 60:667-677. [PMID: 30571144 DOI: 10.1165/rcmb.2018-0335oc] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
In neonates, hyperoxia or positive pressure ventilation causes continued lung injury characterized by simplified vascularization and alveolarization, which are the hallmarks of bronchopulmonary dysplasia. Although endothelial cells (ECs) have metabolic flexibility to maintain cell function under stress, it is unknown whether hyperoxia causes metabolic dysregulation in ECs, leading to lung injury. We hypothesized that hyperoxia alters EC metabolism, which causes EC dysfunction and lung injury. To test this hypothesis, we exposed lung ECs to hyperoxia (95% O2/5% CO2) followed by air recovery (O2/rec). We found that O2/rec reduced mitochondrial oxidative phosphorylation without affecting mitochondrial DNA copy number or mitochondrial mass and that it specifically decreased fatty acid oxidation (FAO) in ECs. This was associated with increased ceramide synthesis and apoptosis. Genetic deletion of carnitine palmitoyltransferase 1a (Cpt1a), a rate-limiting enzyme for carnitine shuttle, further augmented O2/rec-induced apoptosis. O2/rec-induced ceramide synthesis and apoptosis were attenuated when the FAO was enhanced by l-carnitine. Newborn mice were exposed to hyperoxia (>95% O2) between Postnatal Days 1 and 4 and were administered l-carnitine (150 and 300 mg/kg, i.p.) or etomoxir, a specific Cpt1 inhibitor (30 mg/kg, i.p.), daily between Postnatal Days 10 and 14. Etomoxir aggravated O2/rec-induced apoptosis and simplified alveolarization and vascularization in mouse lungs. Similarly, arrested alveolarization and reduced vessel numbers were further augmented in EC-specific Cpt1a-knockout mice compared with wild-type littermates in response to O2/rec. Treatment with l-carnitine (300 mg/kg) attenuated O2/rec-induced lung injury, including simplified alveolarization and decreased vessel numbers. Altogether, enhancing FAO protects against hyperoxia-induced EC apoptosis and lung injury in neonates.
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Affiliation(s)
- Hongwei Yao
- 1 Division of Biology and Medicine, Department of Molecular Biology, Cell Biology and Biochemistry, and
| | - Jiannan Gong
- 1 Division of Biology and Medicine, Department of Molecular Biology, Cell Biology and Biochemistry, and.,2 Department of Respiratory and Critical Care Medicine, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China; and
| | - Abigail L Peterson
- 1 Division of Biology and Medicine, Department of Molecular Biology, Cell Biology and Biochemistry, and
| | - Xuexin Lu
- 1 Division of Biology and Medicine, Department of Molecular Biology, Cell Biology and Biochemistry, and
| | - Peng Zhang
- 3 Cardiology Division, Cardiovascular Research Center, Rhode Island Hospital, Providence, Rhode Island
| | - Phyllis A Dennery
- 1 Division of Biology and Medicine, Department of Molecular Biology, Cell Biology and Biochemistry, and.,4 Department of Pediatrics, Warren Alpert Medical School, Brown University, Providence, Rhode Island
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17
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Khazaee R, McCaig LA, Yamashita C, Hardy DB, Veldhuizen RAW. Maternal protein restriction during perinatal life affects lung mechanics and the surfactant system during early postnatal life in female rats. PLoS One 2019; 14:e0215611. [PMID: 31002676 PMCID: PMC6474624 DOI: 10.1371/journal.pone.0215611] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 04/04/2019] [Indexed: 12/13/2022] Open
Abstract
Limited information is available on how fetal growth retardation (FGR) affects the lung in the neonatal period in males and females. This led us to test the hypothesis that FGR alters lung mechanics and the surfactant system during the neonatal period. To test this hypothesis a model of FGR was utilized in which pregnant rat dams were fed a low protein diet during both the gestation and lactation period. We subsequently analyzed lung mechanics using a FlexiVent ventilator in male and female pups at postnatal day 7 and 21. Lung lavage material was obtained at postnatal day 1, 7 and 21, and was used for analysis of the surfactant system which included measurement of the pool size of surfactant and its subfraction as well as the surface tension reducing ability of the surfactant. The main result of the study was a significantly lower lung compliance and higher tissue elastance which was observed in FGR female offspring at day 21 compared to control offspring. In addition, female LP offspring exhibited lower surfactant pool sizes at postnatal day 1compared to controls. These changes were not observed in the male offspring. It is concluded that FGR has a different impact on pulmonary function and on surfactant in female, as compared to male, offspring.
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Affiliation(s)
- Reza Khazaee
- Department of Physiology & Pharmacology, The University of Western Ontario, London, Ontario, Canada
- Biotron Research Centre, The University of Western Ontario, London, Ontario, Canada
| | | | - Cory Yamashita
- Department of Physiology & Pharmacology, The University of Western Ontario, London, Ontario, Canada
- Lawson Health Research Institute, London, Ontario, Canada
- Department of Medicine, The University of Western Ontario, London, Ontario, Canada
| | - Daniel B. Hardy
- Department of Physiology & Pharmacology, The University of Western Ontario, London, Ontario, Canada
- Lawson Health Research Institute, London, Ontario, Canada
- Department of Obstetrics & Gynecology, The University of Western Ontario, London, Ontario, Canada
| | - Ruud A. W. Veldhuizen
- Department of Physiology & Pharmacology, The University of Western Ontario, London, Ontario, Canada
- Lawson Health Research Institute, London, Ontario, Canada
- Department of Medicine, The University of Western Ontario, London, Ontario, Canada
- * E-mail:
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Mairesse J, Zinni M, Pansiot J, Hassan-Abdi R, Demene C, Colella M, Charriaut-Marlangue C, Rideau Batista Novais A, Tanter M, Maccari S, Gressens P, Vaiman D, Soussi-Yanicostas N, Baud O. Oxytocin receptor agonist reduces perinatal brain damage by targeting microglia. Glia 2018; 67:345-359. [PMID: 30506969 DOI: 10.1002/glia.23546] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 09/08/2018] [Accepted: 09/10/2018] [Indexed: 11/06/2022]
Abstract
Prematurity and fetal growth restriction (FGR) are frequent conditions associated with adverse neurocognitive outcomes. We have previously identified early deregulation of genes controlling neuroinflammation as a putative mechanism linking FGR and abnormal trajectory of the developing brain. While the oxytocin system was also found to be impaired following adverse perinatal events, its role in the modulation of neuroinflammation in the developing brain is still unknown. We used a double-hit rat model of perinatal brain injury induced by gestational low protein diet (LPD) and potentiated by postnatal injections of subliminal doses of interleukin-1β (IL1β) and a zebrafish model of neuroinflammation. Effects of the treatment with carbetocin, a selective, long lasting, and brain diffusible oxytocin receptor agonist, have been assessed using a combination of histological, molecular, and functional tools in vivo and in vitro. In the double-hit model, white matter inflammation, deficient myelination, and behavioral deficits have been observed and the oxytocin system was impaired. Early postnatal supplementation with carbetocin alleviated microglial activation at both transcriptional and cellular levels and provided long-term neuroprotection. The central anti-inflammatory effects of carbetocin have been shown in vivo in rat pups and in a zebrafish model of early-life neuroinflammation and reproduced in vitro on stimulated sorted primary microglial cell cultures from rats subjected to LPD. Carbetocin treatment was associated with beneficial effects on myelination, long-term intrinsic brain connectivity and behavior. Targeting oxytocin signaling in the developing brain may be an effective approach to prevent neuroinflammation - induced brain damage of perinatal origin.
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Affiliation(s)
- Jérôme Mairesse
- PROTECT, Inserm U1141, Université Paris Diderot, Paris, France.,Division of Neonatology and Pediatric Intensive Care, Children's University Hospital of Geneva, Geneva, Switzerland.,Laboratory of Child Growth and Development, University of Geneva, Geneva, Switzerland
| | - Manuela Zinni
- PROTECT, Inserm U1141, Université Paris Diderot, Paris, France
| | - Julien Pansiot
- PROTECT, Inserm U1141, Université Paris Diderot, Paris, France
| | | | - Charlie Demene
- Institut Langevin, CNRS UMR 7587, Inserm U979, ESPCI Paris, PSL Research University, Paris, France
| | - Marina Colella
- PROTECT, Inserm U1141, Université Paris Diderot, Paris, France
| | | | | | - Mickael Tanter
- Institut Langevin, CNRS UMR 7587, Inserm U979, ESPCI Paris, PSL Research University, Paris, France
| | - Stefania Maccari
- International Associated Laboratory (LIA) "Prenatal Stress and Neurodegenerative Diseases, University of Lille 1 - CNRS UMR8576 Lille, France and Sapienza University of Rome - IRCCS Neuromed, Rome, Italy
| | - Pierre Gressens
- PROTECT, Inserm U1141, Université Paris Diderot, Paris, France.,PremUP Foundation, Paris, France
| | - Daniel Vaiman
- PremUP Foundation, Paris, France.,Institut Cochin, Inserm U1016, UMR8104 CNRS, Paris, France
| | | | - Olivier Baud
- PROTECT, Inserm U1141, Université Paris Diderot, Paris, France.,Division of Neonatology and Pediatric Intensive Care, Children's University Hospital of Geneva, Geneva, Switzerland.,Laboratory of Child Growth and Development, University of Geneva, Geneva, Switzerland.,PremUP Foundation, Paris, France
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19
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Nogueira V, Brito-Alves J, Fontes D, Oliveira L, Lucca W, Tourneur Y, Wanderley A, da Silva GSF, Leandro C, Costa-Silva JH. Carotid body removal normalizes arterial blood pressure and respiratory frequency in offspring of protein-restricted mothers. Hypertens Res 2018; 41:1000-1012. [PMID: 30242293 DOI: 10.1038/s41440-018-0104-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 03/12/2018] [Accepted: 03/26/2018] [Indexed: 12/25/2022]
Abstract
The aim of this study is to evaluate the short-term and long-term effects elicited by carotid body removal (CBR) on ventilatory function and the development of hypertension in the offspring of malnourished rats. Wistar rats were fed a normo-protein (NP, 17% casein) or low-protein (LP, 8% casein) diet during pregnancy and lactation. At 29 days of age, the animals were submitted to CBR or a sham surgery, according to the following groups: NP-cbr, LP-cbr, NP-sham, or LP-sham. In the short-term, at 30 days of age, the respiratory frequency (RF) and immunoreactivity for Fos on the retrotrapezoid nucleus (RTN; brainstem site containing CO2 sensitive neurons) after exposure to CO2 were evaluated. In the long term, at 90 days of age, arterial pressure (AP), heart rate (HR), and cardiovascular variability were evaluated. In the short term, an increase in the baseline RF (~6%), response to CO2 (~8%), and Fos in the RTN (~27%) occurred in the LP-sham group compared with the NP-sham group. Interestingly, the CBR in the LP group normalized the RF in response to CO2 as well as RTN cell activation. In the long term, CBR reduced the mean AP by ~20 mmHg in malnourished rats. The normalization of the arterial pressure was associated with a decrease in the low-frequency (LF) oscillatory component of AP (~58%) and in the sympathetic tonus to the cardiovascular system (~29%). In conclusion, carotid body inputs in malnourished offspring may be responsible for the following: (i) enhanced respiratory frequency and CO2 chemosensitivity in early life and (ii) the production of autonomic imbalance and the development of hypertension.
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Affiliation(s)
- Viviane Nogueira
- Department of Physical Education and Sports Sciences, Federal University of Pernambuco, Vitória de Santo Antão, PE, Brazil
| | - Jose Brito-Alves
- Department of Physical Education and Sports Sciences, Federal University of Pernambuco, Vitória de Santo Antão, PE, Brazil
| | - Danilo Fontes
- Department of Physical Education and Sports Sciences, Federal University of Pernambuco, Vitória de Santo Antão, PE, Brazil
| | - Larissa Oliveira
- Department of Morphology, Federal University of Sergipe, Aracajú, SE, Brazil
| | - Waldecy Lucca
- Department of Morphology, Federal University of Sergipe, Aracajú, SE, Brazil
| | - Yves Tourneur
- Department of Physical Education and Sports Sciences, Federal University of Pernambuco, Vitória de Santo Antão, PE, Brazil.,Centre National de la Recherche Scientifique, Université Claude Bernard, Lyon 1, Lyon, France
| | - Almir Wanderley
- Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, PE, Brazil
| | - Glauber S F da Silva
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Carol Leandro
- Department of Physical Education and Sports Sciences, Federal University of Pernambuco, Vitória de Santo Antão, PE, Brazil
| | - João Henrique Costa-Silva
- Department of Physical Education and Sports Sciences, Federal University of Pernambuco, Vitória de Santo Antão, PE, Brazil.
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20
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Arigliani M, Spinelli AM, Liguoro I, Cogo P. Nutrition and Lung Growth. Nutrients 2018; 10:E919. [PMID: 30021997 PMCID: PMC6073340 DOI: 10.3390/nu10070919] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 07/13/2018] [Accepted: 07/16/2018] [Indexed: 12/21/2022] Open
Abstract
Experimental evidence from animal models and epidemiology studies has demonstrated that nutrition affects lung development and may have a lifelong impact on respiratory health. Chronic restriction of nutrients and/or oxygen during pregnancy causes structural changes in the airways and parenchyma that may result in abnormal lung function, which is tracked throughout life. Inadequate nutritional management in very premature infants hampers lung growth and may be a contributing factor in the pathogenesis of bronchopulmonary dysplasia. Recent evidence seems to indicate that infant and childhood malnutrition does not determine lung function impairment even in the presence of reduced lung size due to delayed body growth. This review will focus on the effects of malnutrition occurring at critical time periods such as pregnancy, early life, and childhood, on lung growth and long-term lung function.
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Affiliation(s)
- Michele Arigliani
- Department of Medicine, University Hospital of Udine, Piazzale S. Maria Misericordia 1, 33100 Udine, Italy.
| | - Alessandro Mauro Spinelli
- Department of Medicine, University Hospital of Udine, Piazzale S. Maria Misericordia 1, 33100 Udine, Italy.
| | - Ilaria Liguoro
- Department of Medicine, University Hospital of Udine, Piazzale S. Maria Misericordia 1, 33100 Udine, Italy.
| | - Paola Cogo
- Department of Medicine, University Hospital of Udine, Piazzale S. Maria Misericordia 1, 33100 Udine, Italy.
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21
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Zhao H, Dennery PA, Yao H. Metabolic reprogramming in the pathogenesis of chronic lung diseases, including BPD, COPD, and pulmonary fibrosis. Am J Physiol Lung Cell Mol Physiol 2018; 314:L544-L554. [PMID: 29351437 DOI: 10.1152/ajplung.00521.2017] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The metabolism of nutrient substrates, including glucose, glutamine, and fatty acids, provides acetyl-CoA for the tricarboxylic acid cycle to generate energy, as well as metabolites for the biosynthesis of biomolecules, including nucleotides, proteins, and lipids. It has been shown that metabolism of glucose, fatty acid, and glutamine plays important roles in modulating cellular proliferation, differentiation, apoptosis, autophagy, senescence, and inflammatory responses. All of these cellular processes contribute to the pathogenesis of chronic lung diseases, including bronchopulmonary dysplasia, chronic obstructive pulmonary disease, and pulmonary fibrosis. Recent studies demonstrate that metabolic reprogramming occurs in patients with and animal models of chronic lung diseases, suggesting that metabolic dysregulation may participate in the pathogenesis and progression of these diseases. In this review, we briefly discuss the catabolic pathways for glucose, glutamine, and fatty acids, and focus on how metabolic reprogramming of these pathways impacts cellular functions and leads to the development of these chronic lung diseases. We also highlight how targeting metabolic pathways can be utilized in the prevention and treatment of these diseases.
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Affiliation(s)
- Haifeng Zhao
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University , Providence, Rhode Island.,Department of Nutrition and Food Hygiene, School of Public Health, Shanxi Medical University , Taiyuan, Shanxi , China
| | - Phyllis A Dennery
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University , Providence, Rhode Island.,Department of Pediatrics, Warren Alpert Medical School of Brown University , Providence, Rhode Island
| | - Hongwei Yao
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University , Providence, Rhode Island
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22
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Kang NY, Ivanovska J, Tamir-Hostovsky L, Belik J, Gauda EB. Chronic Intermittent Hypoxia in Premature Infants: The Link Between Low Fat Stores, Adiponectin Receptor Signaling and Lung Injury. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1071:151-157. [PMID: 30357746 DOI: 10.1007/978-3-319-91137-3_19] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Premature infants have chronic intermittent hypoxia (CIH) that increases morbidity, and the youngest and the smallest premature infants are at the greatest risk. The combination of lung injury from inflammation/oxidative stress causing low functional residual capacity combined with frequent short apneas leads to CIH. Adiponectin (APN) is an adipose-derived adipokine that protects the lung from inflammation and oxidative stress. Premature and small for gestational age (SGA) infants have minimal body fat and low levels of circulating APN. To begin to understand the potential role of APN in lung protection during lung development, we characterized the developmental profile of APN and APN receptors (AdipoR1 and AdipoR2) protein and mRNA expression in the newborn rat lung at fetal day (FD) 19, and postnatal days (PD) 1, 4, 7, 10, 14, 21, and 28. Protein levels in lung homogenates were measured by western blot analyses; relative mRNA expression was detected by quantitative PCR (qPCR); and serum high molecular weight (HMW) APN was measured using enzyme-linked immunosorbent assay (ELISA). Results: APN protein and mRNA levels were lowest at FD19 and PD1, increased 2.2-fold at PD4, decreased at PD10, and then increased again at PD21. AdipoR1 protein and mRNA levels peaked at PD1, followed by a threefold drop by PD4, and remained low until PD21. AdipoR2 protein and mRNA levels also peaked at PD1, but remained high at PD4, followed by a 1.7-fold drop by PD10 that remained low by PD21. Serum APN levels detected by ELISA did not differ from PD4 to PD28. To date, this is the first report characterizing APN and APN receptor protein and mRNA expression in the rat lung during development. The developmental stage of the newborn rat lung models that of the premature human infant; both are in the saccular stage of lung development. In the newborn rat lung, alveolarization begins at PD4, peaks at PD10, and ends at PD21. Importantly, we found that AdipoR1 receptor protein and mRNA expression is lowest during lung alveolarization (PD4 to PD21). Thus, we speculate that low levels of AdipoR1 during lung alveolarization contributes to the increased susceptibility to developing acute lung edema and chronic lung injury such as bronchopulmonary dysplasia (BPD) in premature human infants.
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Affiliation(s)
- Na-Young Kang
- The Hospital for Sick Children, Division of Neonatology, University of Toronto, Toronto, ON, Canada
| | - Julijana Ivanovska
- The Hospital for Sick Children, Division of Neonatology, University of Toronto, Toronto, ON, Canada
| | - Liran Tamir-Hostovsky
- The Hospital for Sick Children, Division of Neonatology, University of Toronto, Toronto, ON, Canada
| | - Jaques Belik
- The Hospital for Sick Children, Division of Neonatology, University of Toronto, Toronto, ON, Canada
| | - Estelle B Gauda
- Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada.
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23
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Dravet-Gounot P, Morin C, Jacques S, Dumont F, Ely-Marius F, Vaiman D, Jarreau PH, Méhats C, Zana-Taïeb E. Lung microRNA deregulation associated with impaired alveolarization in rats after intrauterine growth restriction. PLoS One 2017; 12:e0190445. [PMID: 29287116 PMCID: PMC5747455 DOI: 10.1371/journal.pone.0190445] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 12/14/2017] [Indexed: 12/14/2022] Open
Abstract
Intrauterine growth restriction (IUGR) was recently described as an independent risk factor of bronchopulmonary dysplasia, the main respiratory sequelae of preterm birth. We previously showed impaired alveolarization in rat pups born with IUGR induced by a low-protein diet (LPD) during gestation. We conducted a genome-wide analysis of gene expression and found the involvement of several pathways such as cell adhesion. Here, we describe our unbiased microRNA (miRNA) profiling by microarray assay and validation by qPCR at postnatal days 10 and 21 (P10 and P21) in lungs of rat pups with LPD-induced lung-alveolarization disorder after IUGR. We identified 13 miRNAs with more than two-fold differential expression between control lungs and LPD-induced IUGR lungs. Validated and predicted target genes of these miRNAs were related to “tissue repair” at P10 and “cellular communication regulation” at P21. We predicted the deregulation of several genes associated with these pathways. Especially, E2F3, a transcription factor involved in cell cycle control, was expressed in developing alveoli, and its mRNA and protein levels were significantly increased at P21 after IUGR. Hence, IUGR affects the expression of selected miRNAs during lung alveolarization. These results provide a basis for deciphering the mechanistic contributions of IUGR to impaired alveolarization.
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Affiliation(s)
- Pauline Dravet-Gounot
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
- AP-HP, Maternité Port Royal, Service de Médecine et Réanimation Néonatales, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
| | - Cécile Morin
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
| | - Sébastien Jacques
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
| | - Florent Dumont
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
| | - Fabiola Ely-Marius
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
| | - Daniel Vaiman
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
| | - Pierre-Henri Jarreau
- Université Paris Descartes, Faculté de Médecine, Paris, France
- AP-HP, Maternité Port Royal, Service de Médecine et Réanimation Néonatales, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
- Inserm U1141, Paris, France
- Premup, Paris, France
| | - Céline Méhats
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
- * E-mail:
| | - Elodie Zana-Taïeb
- Université Paris Descartes, Faculté de Médecine, Paris, France
- AP-HP, Maternité Port Royal, Service de Médecine et Réanimation Néonatales, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
- Inserm U1141, Paris, France
- Premup, Paris, France
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24
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Surate Solaligue DE, Rodríguez-Castillo JA, Ahlbrecht K, Morty RE. Recent advances in our understanding of the mechanisms of late lung development and bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2017; 313:L1101-L1153. [PMID: 28971976 DOI: 10.1152/ajplung.00343.2017] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/21/2017] [Accepted: 09/23/2017] [Indexed: 02/08/2023] Open
Abstract
The objective of lung development is to generate an organ of gas exchange that provides both a thin gas diffusion barrier and a large gas diffusion surface area, which concomitantly generates a steep gas diffusion concentration gradient. As such, the lung is perfectly structured to undertake the function of gas exchange: a large number of small alveoli provide extensive surface area within the limited volume of the lung, and a delicate alveolo-capillary barrier brings circulating blood into close proximity to the inspired air. Efficient movement of inspired air and circulating blood through the conducting airways and conducting vessels, respectively, generates steep oxygen and carbon dioxide concentration gradients across the alveolo-capillary barrier, providing ideal conditions for effective diffusion of both gases during breathing. The development of the gas exchange apparatus of the lung occurs during the second phase of lung development-namely, late lung development-which includes the canalicular, saccular, and alveolar stages of lung development. It is during these stages of lung development that preterm-born infants are delivered, when the lung is not yet competent for effective gas exchange. These infants may develop bronchopulmonary dysplasia (BPD), a syndrome complicated by disturbances to the development of the alveoli and the pulmonary vasculature. It is the objective of this review to update the reader about recent developments that further our understanding of the mechanisms of lung alveolarization and vascularization and the pathogenesis of BPD and other neonatal lung diseases that feature lung hypoplasia.
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Affiliation(s)
- David E Surate Solaligue
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - José Alberto Rodríguez-Castillo
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - Katrin Ahlbrecht
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - Rory E Morty
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and .,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
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25
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Podophyllotoxin Extracted from Juniperus sabina Fruit Inhibits Rat Sperm Maturation and Fertility by Promoting Epididymal Epithelial Cell Apoptosis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:6958982. [PMID: 28744317 PMCID: PMC5514346 DOI: 10.1155/2017/6958982] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 05/23/2017] [Indexed: 01/31/2023]
Abstract
This study aimed to investigate the antifertility effect of Juniperus sabina fruit on male rats and its possible mechanism, and hence it might be developed as a potential nonhormonal male contraceptive. Male rats were intragastrically fed for consecutive 8-week and 4-week recovery with the fruit of J. Sabina, and sperm maturation, serum testosterone level, and histopathology were analyzed. Epididymal epithelial cell culture was prepared for detection of podophyllotoxin activities. Furthermore, cell proliferation, transmission electron microscopy, Annexin V/Propidium iodide, TUNEL, RT-PCR, ELISA, and western blotting were examined. The results showed that rat sperm motility and fertility were remarkably declined after feeding the fruit. Moreover, the fruit targeted the epididymis rather than the testis. After 4-week recovery, more than half of the male rats resumed normal fertility. It was found that podophyllotoxin significantly inhibited epididymal epithelial cell proliferation, promoted cell apoptosis, and increased the mRNA and protein levels of TNF-α and the expression levels of cytochrome c, caspase-8, caspase-9, and caspase-3. Our findings suggest that the fruit of J. sabina could inhibit male rat sperm maturation and fertility. The potential mechanism might be related to podophyllotoxin, inducing epididymal epithelial cell apoptosis through TNF-α and caspase signaling pathway.
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26
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McGillick EV, Orgeig S, Allison BJ, Brain KL, Niu Y, Itani N, Skeffington KL, Kane AD, Herrera EA, Giussani DA, Morrison JL. Maternal chronic hypoxia increases expression of genes regulating lung liquid movement and surfactant maturation in male fetuses in late gestation. J Physiol 2017; 595:4329-4350. [PMID: 28318025 PMCID: PMC5491863 DOI: 10.1113/jp273842] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 03/14/2017] [Indexed: 12/16/2022] Open
Abstract
KEY POINTS Chronic fetal hypoxaemia is a common pregnancy complication associated with intrauterine growth restriction that may influence respiratory outcome at birth. We investigated the effect of maternal chronic hypoxia for a month in late gestation on signalling pathways regulating fetal lung maturation and the transition to air-breathing at birth using isobaric hypoxic chambers without alterations to maternal food intake. Maternal chronic hypoxia in late gestation increases fetal lung expression of genes regulating hypoxia signalling, lung liquid reabsorption and surfactant maturation, which may be an adaptive response in preparation for the successful transition to air-breathing at birth. In contrast to other models of chronic fetal hypoxaemia, late gestation onset fetal hypoxaemia promotes molecular regulation of fetal lung maturation. This suggests a differential effect of timing and duration of fetal chronic hypoxaemia on fetal lung maturation, which supports the heterogeneity observed in respiratory outcomes in newborns following exposure to chronic hypoxaemia in utero. ABSTRACT Chronic fetal hypoxaemia is a common pregnancy complication that may arise from maternal, placental and/or fetal factors. Respiratory outcome of the infant at birth likely depends on the duration, timing and severity of the hypoxaemic insult. We have isolated the effect of maternal chronic hypoxia (MCH) for a month in late gestation on fetal lung development. Pregnant ewes were exposed to normoxia (21% O2 ) or hypoxia (10% O2 ) from 105 to 138 days of gestation (term ∼145 days). At 138 days, gene expression in fetal lung tissue was determined by quantitative RT-PCR. Cortisol concentrations were determined in fetal plasma and lung tissue. Numerical density of surfactant protein positive cells was determined by immunohistochemistry. MCH reduced maternal PaO2 (106 ± 2.9 vs. 47 ± 2.8 mmHg) and fetal body weight (4.0 ± 0.4 vs. 3.2 ± 0.9 kg). MCH increased fetal lung expression of the anti-oxidant marker CAT and decreased expression of the pro-oxidant marker NOX-4. MCH increased expression of genes regulating hypoxia signalling and feedback (HIF-3α, KDM3A, SLC2A1, EGLN-3). There was no effect of MCH on fetal plasma/lung tissue cortisol concentrations, nor genes regulating glucocorticoid signalling (HSD11B-1, HSD11B-2, NR3C1, NR3C2). MCH increased expression of genes regulating sodium (SCNN1-B, ATP1-A1, ATP1-B1) and water (AQP-4) movement in the fetal lung. MCH promoted surfactant maturation (SFTP-B, SFTP-D, ABCA3) at the molecular level, but did not alter the numerical density of surfactant positive cells in lung tissue. MCH in late gestation promotes molecular maturation of the fetal lung, which may be an adaptive response in preparation for the successful transition to air-breathing at birth.
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Affiliation(s)
- Erin V. McGillick
- Early Origins of Adult Health Research GroupSchool of Pharmacy & Medical Sciences, Sansom Institute for Health ResearchUniversity of South AustraliaAdelaideAustralia
- Molecular and Evolutionary Physiology of the Lung Laboratory, School of Pharmacy & Medical Sciences, Sansom Institute for Health ResearchUniversity of South AustraliaAdelaideAustralia
| | - Sandra Orgeig
- Molecular and Evolutionary Physiology of the Lung Laboratory, School of Pharmacy & Medical Sciences, Sansom Institute for Health ResearchUniversity of South AustraliaAdelaideAustralia
| | - Beth J. Allison
- Department of PhysiologyDevelopment & NeuroscienceUniversity of CambridgeCambridgeshireUK
| | - Kirsty L. Brain
- Department of PhysiologyDevelopment & NeuroscienceUniversity of CambridgeCambridgeshireUK
| | - Youguo Niu
- Department of PhysiologyDevelopment & NeuroscienceUniversity of CambridgeCambridgeshireUK
| | - Nozomi Itani
- Department of PhysiologyDevelopment & NeuroscienceUniversity of CambridgeCambridgeshireUK
| | - Katie L. Skeffington
- Department of PhysiologyDevelopment & NeuroscienceUniversity of CambridgeCambridgeshireUK
| | - Andrew D. Kane
- Department of PhysiologyDevelopment & NeuroscienceUniversity of CambridgeCambridgeshireUK
| | - Emilio A. Herrera
- Programa de Fisiopatología, Instituto de Ciencias BiomédicasFacultad de MedicinaUniversidad de ChileAv. Salvador 486Providencia7500922SantiagoChile
| | - Dino A. Giussani
- Department of PhysiologyDevelopment & NeuroscienceUniversity of CambridgeCambridgeshireUK
| | - Janna L. Morrison
- Early Origins of Adult Health Research GroupSchool of Pharmacy & Medical Sciences, Sansom Institute for Health ResearchUniversity of South AustraliaAdelaideAustralia
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27
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High post-natal mortality associated with defects in lung maturation and reduced adiposity in mice with gestational exposure to high fat and N-acetylcysteine. Res Vet Sci 2017; 114:262-265. [PMID: 28531807 DOI: 10.1016/j.rvsc.2017.05.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 04/17/2017] [Accepted: 05/12/2017] [Indexed: 12/12/2022]
Abstract
Studies have demonstrated that maternal consumption of a high fat diet (HFD) increases offspring susceptibility to metabolic disease. This study was initiated to identify the mechanistic contribution of oxidative stress on this phenomenon. Two weeks prior to mating, dams were fed either HFD or Control diet with or without supplementation with the anti-oxidant N-acetylcysteine (NAC). Pups born to HFD dams had reduced crown rump length (CRL) at birth and higher neonatal mortality compared to pups from Control dams. Supplementation with NAC normalized CRL in pups from HFD dams, but notably increased mortality. Histological examination of the lungs postnatally and prenatally, revealed normal branching morphogenesis but delayed alveolarization in pups from dams fed HFD+NAC. Discontinuation of NAC at ED17.5 with re-introduction at PD3 improved offspring survival and lung maturation. Additionally, interscapular brown adipose tissue (BAT) was reduced in ED18.5 embryos from HFD dams. These findings suggest that increased mortality in offspring from dams fed HFD+NAC during pregnancy may in part be the result of delayed pulmonary alveolarization and decreased BAT.
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28
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Collaco JM, Aherrera AD, McGrath-Morrow SA. The influence of gender on respiratory outcomes in children with bronchopulmonary dysplasia during the first 3 years of life. Pediatr Pulmonol 2017; 52:217-224. [PMID: 27362897 PMCID: PMC5557406 DOI: 10.1002/ppul.23520] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 05/11/2016] [Accepted: 06/07/2016] [Indexed: 12/20/2022]
Abstract
INTRODUCTION Since premature males are more likely to be diagnosed with bronchopulmonary dysplasia we hypothesized that differences in respiratory outcomes after initial hospital discharge and during the first 3 years of life would exist between females and males diagnosed with BPD. METHODS Subjects with the diagnosis of BPD were recruited from the Johns Hopkins Bronchopulmonary Dysplasia Clinic between 2008 and 2014. Clinical features were assessed through chart review (n = 482). Respiratory morbidities were assessed by caregiver questionnaires at clinic visits (n = 429), including emergency department visits, hospital admissions, systemic steroid use, and antibiotic use for respiratory reasons since the last BPD clinic visit or after initial hospital discharge if assessed at the first visit. RESULTS Male infants weighed significantly more at birth, had higher birth weight percentiles and were more likely to be non-white compared to female infants. The frequency of ever acute care use was 36.9% for emergency department visits, 27.4% for hospital admissions, 36.9% for systemic steroid use, and 40.5% for antibiotic use for a respiratory illness. No differences in respiratory morbidities were found between males and females. Females however, tended to be weaned from supplemental oxygen over 3 months later than males. CONCLUSIONS Compared to females with BPD, males were more likely to weigh more, have higher birth weight percentiles and be non-white. After initial hospital discharge, there were no difference in respiratory morbidities between males and females with BPD. Female infants however were more likely to be weaned from supplemental oxygen at a later age than male infants. Pediatr Pulmonol. 2017;52:217-224. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Joseph M Collaco
- Eudowood Division of Pediatric Respiratory Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Angela D Aherrera
- Eudowood Division of Pediatric Respiratory Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Sharon A McGrath-Morrow
- Eudowood Division of Pediatric Respiratory Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
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29
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Rideau Batista Novais A, Pham H, Van de Looij Y, Bernal M, Mairesse J, Zana-Taieb E, Colella M, Jarreau PH, Pansiot J, Dumont F, Sizonenko S, Gressens P, Charriaut-Marlangue C, Tanter M, Demene C, Vaiman D, Baud O. Transcriptomic regulations in oligodendroglial and microglial cells related to brain damage following fetal growth restriction. Glia 2016; 64:2306-2320. [PMID: 27687291 DOI: 10.1002/glia.23079] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 09/15/2016] [Accepted: 09/19/2016] [Indexed: 11/06/2022]
Abstract
Fetal growth restriction (FGR) is a major complication of human pregnancy, frequently resulting from placental vascular diseases and prenatal malnutrition, and is associated with adverse neurocognitive outcomes throughout life. However, the mechanisms linking poor fetal growth and neurocognitive impairment are unclear. Here, we aimed to correlate changes in gene expression induced by FGR in rats and abnormal cerebral white matter maturation, brain microstructure, and cortical connectivity in vivo. We investigated a model of FGR induced by low-protein-diet malnutrition between embryonic day 0 and birth using an interdisciplinary approach combining advanced brain imaging, in vivo connectivity, microarray analysis of sorted oligodendroglial and microglial cells and histology. We show that myelination and brain function are both significantly altered in our model of FGR. These alterations, detected first in the white matter on magnetic resonance imaging significantly reduced cortical connectivity as assessed by ultrafast ultrasound imaging. Fetal growth retardation was found associated with white matter dysmaturation as shown by the immunohistochemical profiles and microarrays analyses. Strikingly, transcriptomic and gene network analyses reveal not only a myelination deficit in growth-restricted pups, but also the extensive deregulation of genes controlling neuroinflammation and the cell cycle in both oligodendrocytes and microglia. Our findings shed new light on the cellular and gene regulatory mechanisms mediating brain structural and functional defects in malnutrition-induced FGR, and suggest, for the first time, a neuroinflammatory basis for the poor neurocognitive outcome observed in growth-restricted human infants. GLIA 2016;64:2306-2320.
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Affiliation(s)
- Aline Rideau Batista Novais
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1141, Paris, France.,Assistance Publique - Hôpitaux de Paris, Service de Réanimation et Pédiatrie Néonatales, Groupe Hospitalier Robert Debré, Paris, France.,Université Paris Diderot, Paris, France.,Fondation PremUp, Paris, France
| | - Hoa Pham
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1141, Paris, France.,Fondation PremUp, Paris, France
| | - Yohan Van de Looij
- Laboratory for Functional and Metabolic Imaging (LIFMET), Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.,Division of Development and Growth, Department of Child and Adolescent Medicine, Geneva University Hospital and School of Medicine, Geneva, Switzerland
| | - Miguel Bernal
- Institut Langevin, CNRS UMR 7587, Inserm U979, ESPCI ParisTech, PSL Research University, Paris, France
| | - Jerome Mairesse
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1141, Paris, France.,Fondation PremUp, Paris, France
| | - Elodie Zana-Taieb
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1141, Paris, France.,Fondation PremUp, Paris, France.,Université Paris-Descartes, Paris, France.,Assistance Publique - Hôpitaux de Paris, Service de Médecine et Réanimation Néonatales de Port-Royal, Groupe Hospitalier Cochin, Broca, Hôtel-Dieu, Paris, France
| | - Marina Colella
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1141, Paris, France.,Fondation PremUp, Paris, France
| | - Pierre-Henri Jarreau
- Fondation PremUp, Paris, France.,Université Paris-Descartes, Paris, France.,Assistance Publique - Hôpitaux de Paris, Service de Médecine et Réanimation Néonatales de Port-Royal, Groupe Hospitalier Cochin, Broca, Hôtel-Dieu, Paris, France
| | - Julien Pansiot
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1141, Paris, France.,Fondation PremUp, Paris, France
| | - Florent Dumont
- Institut Cochin, Inserm U1016, UMR8104 CNRS, Paris, France
| | - Stéphane Sizonenko
- Division of Development and Growth, Department of Child and Adolescent Medicine, Geneva University Hospital and School of Medicine, Geneva, Switzerland
| | - Pierre Gressens
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1141, Paris, France.,Université Paris Diderot, Paris, France.,Fondation PremUp, Paris, France
| | - Christiane Charriaut-Marlangue
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1141, Paris, France.,Université Paris Diderot, Paris, France.,Fondation PremUp, Paris, France
| | - Mickael Tanter
- Institut Langevin, CNRS UMR 7587, Inserm U979, ESPCI ParisTech, PSL Research University, Paris, France
| | - Charlie Demene
- Institut Langevin, CNRS UMR 7587, Inserm U979, ESPCI ParisTech, PSL Research University, Paris, France
| | - Daniel Vaiman
- Institut Cochin, Inserm U1016, UMR8104 CNRS, Paris, France
| | - Olivier Baud
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1141, Paris, France. .,Assistance Publique - Hôpitaux de Paris, Service de Réanimation et Pédiatrie Néonatales, Groupe Hospitalier Robert Debré, Paris, France. .,Université Paris Diderot, Paris, France. .,Fondation PremUp, Paris, France.
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30
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Tain YL, Hsu CN, Chan JYH. PPARs Link Early Life Nutritional Insults to Later Programmed Hypertension and Metabolic Syndrome. Int J Mol Sci 2015; 17:ijms17010020. [PMID: 26712739 PMCID: PMC4730267 DOI: 10.3390/ijms17010020] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 12/15/2015] [Accepted: 12/21/2015] [Indexed: 02/06/2023] Open
Abstract
Hypertension is an important component of metabolic syndrome. Adulthood hypertension and metabolic syndrome can be programmed in response to nutritional insults in early life. Peroxisome proliferator-activated receptors (PPARs) serve as a nutrient-sensing signaling linking nutritional programming to hypertension and metabolic syndrome. All three members of PPARs, PPARα, PPARβ/δ, and PPARγ, are expressed in the kidney and involved in blood pressure control. This review provides an overview of potential clinical applications of targeting on the PPARs in the kidney to prevent programmed hypertension and metabolic syndrome, with an emphasis on the following areas: mechanistic insights to interpret programmed hypertension; the link between the PPARs, nutritional insults, and programmed hypertension and metabolic syndrome; the impact of PPAR signaling pathway in a maternal high-fructose model; and current experimental studies on early intervention by PPAR modulators to prevent programmed hypertension and metabolic syndrome. Animal studies employing a reprogramming strategy via targeting PPARs to prevent hypertension have demonstrated interesting results. It is critical that the observed effects on developmental reprogramming in animal models are replicated in human studies, to halt the globally-growing epidemic of metabolic syndrome-related diseases.
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Affiliation(s)
- You-Lin Tain
- Departments of Pediatrics, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 833, Taiwan.
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 833, Taiwan.
| | - Chien-Ning Hsu
- Department of Pharmacy, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan.
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Julie Y H Chan
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 833, Taiwan.
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31
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Silva DMG, Nardiello C, Pozarska A, Morty RE. Recent advances in the mechanisms of lung alveolarization and the pathogenesis of bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2015; 309:L1239-72. [PMID: 26361876 DOI: 10.1152/ajplung.00268.2015] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 09/09/2015] [Indexed: 02/08/2023] Open
Abstract
Alveolarization is the process by which the alveoli, the principal gas exchange units of the lung, are formed. Along with the maturation of the pulmonary vasculature, alveolarization is the objective of late lung development. The terminal airspaces that were formed during early lung development are divided by the process of secondary septation, progressively generating an increasing number of alveoli that are of smaller size, which substantially increases the surface area over which gas exchange can take place. Disturbances to alveolarization occur in bronchopulmonary dysplasia (BPD), which can be complicated by perturbations to the pulmonary vasculature that are associated with the development of pulmonary hypertension. Disturbances to lung development may also occur in persistent pulmonary hypertension of the newborn in term newborn infants, as well as in patients with congenital diaphragmatic hernia. These disturbances can lead to the formation of lungs with fewer and larger alveoli and a dysmorphic pulmonary vasculature. Consequently, affected lungs exhibit a reduced capacity for gas exchange, with important implications for morbidity and mortality in the immediate postnatal period and respiratory health consequences that may persist into adulthood. It is the objective of this Perspectives article to update the reader about recent developments in our understanding of the molecular mechanisms of alveolarization and the pathogenesis of BPD.
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Affiliation(s)
- Diogo M G Silva
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany; Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Claudio Nardiello
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany; Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Agnieszka Pozarska
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany; Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Rory E Morty
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany; Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
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