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Chen C, Zhang J, Yu T, Feng H, Liao J, Jia Y. LRG1 Contributes to the Pathogenesis of Multiple Kidney Diseases: A Comprehensive Review. KIDNEY DISEASES (BASEL, SWITZERLAND) 2024; 10:237-248. [PMID: 38799248 PMCID: PMC11126829 DOI: 10.1159/000538443] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 03/08/2024] [Indexed: 05/29/2024]
Abstract
Background The increasing prevalence of kidney diseases has become a significant public health issue, with a global prevalence exceeding 10%. In order to accurately identify biochemical changes and treatment outcomes associated with kidney diseases, novel methods targeting specific genes have been discovered. Among these genes, leucine-rich α-2 glycoprotein 1 (LRG1) has been identified to function as a multifunctional pathogenic signaling molecule in multiple diseases, including kidney diseases. This study aims to provide a comprehensive overview of the current evidence regarding the roles of LRG1 in different types of kidney diseases. Summary Based on a comprehensive review, it was found that LRG1 was upregulated in the urine, serum, or renal tissues of patients or experimental animal models with multiple kidney diseases, such as diabetic nephropathy, kidney injury, IgA nephropathy, chronic kidney diseases, clear cell renal cell carcinoma, end-stage renal disease, canine leishmaniosis-induced kidney disease, kidney fibrosis, and aristolochic acid nephropathy. Mechanistically, the role of LRG1 in kidney diseases is believed to be detrimental, potentially through its regulation of various genes and signaling cascades, i.e., fibronectin 1, GPR56, vascular endothelial growth factor (VEGF), VEGFR-2, death receptor 5, GDF15, HIF-1α, SPP1, activin receptor-like kinase 1-Smad1/5/8, NLRP3-IL-1b, and transforming growth factor β pathway. Key Messages Further research is needed to fully comprehend the molecular mechanisms by which LRG1 contributes to the pathogenesis and pathophysiology of kidney diseases. It is anticipated that targeted treatments focusing on LRG1 will be utilized in clinical trials and implemented in clinical practice in the future.
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Affiliation(s)
- Chunyan Chen
- Department of Nephrology, Jiaxing Hospital of Traditional Chinese Medicine, Jiaxing, China
| | - Jingwei Zhang
- Department of Urology, Guangzhou First People’s Hospital, Guangzhou, China
| | - Tao Yu
- Department of Emergency Medicine, Dean People’s Hospital, Jiujiang, China
| | - Haiya Feng
- Department of Burn Surgery, Department of Urology, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China
| | - Jian Liao
- Department of Nephrology, Jiaxing Hospital of Traditional Chinese Medicine, Jiaxing, China
| | - Yifei Jia
- Department of Burn Surgery, Department of Urology, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China
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2
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Zhong J, Doughty R, Thymann T, Sangild PT, Nguyen DN, Muk T. Insulin-like growth factor-1 effects on kidney development in preterm piglets. Pediatr Res 2024:10.1038/s41390-024-03222-3. [PMID: 38762663 DOI: 10.1038/s41390-024-03222-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 04/03/2024] [Accepted: 04/04/2024] [Indexed: 05/20/2024]
Abstract
BACKGROUND Preterm birth disrupts fetal kidney development, potentially leading to postnatal acute kidney injury. Preterm infants are deficient in insulin-like growth factor 1 (IGF-1), a growth factor that stimulates organ development. By utilizing a preterm pig model, this study investigated whether IGF-1 supplementation enhances preterm kidney maturation. METHODS Cesarean-delivered preterm pigs were treated systemically IGF-1 or vehicle control for 5, 9 or 19 days after birth. Blood, urine, and kidney tissue were collected for biochemical, histological and gene expression analyses. Age-matched term-born pigs were sacrificed at similar postnatal ages and served as the reference group. RESULTS Compared with term pigs, preterm pigs exhibited impaired kidney maturation, as indicated by analyses of renal morphology, histopathology, and inflammatory and injury markers. Supplementation with IGF-1 reduced signs of kidney immaturity, particularly in the first week of life, as indicated by improved morphology, upregulated expression of key developmental genes, reduced severity and incidence of microscopic lesions, and decreased levels of inflammatory and injury markers. No association was seen between the symptoms of necrotizing enterocolitis and kidney defects. CONCLUSION Preterm birth in pigs impairs kidney maturation and exogenous IGF-1 treatment partially reverses this impairment. Early IGF-1 supplementation could support the development of preterm kidneys. IMPACT Preterm birth may disrupt kidney development in newborns, potentially leading to morphological changes, injury, and inflammation. Preterm pigs have previously been used as models for preterm infants, but not for kidney development. IGF-1 supplementation promotes kidney maturation and alleviates renal impairments in the first week of life in preterm pigs. IGF-1 may hold potential as a supportive therapy for preterm infants sensitive to acute kidney injury.
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Affiliation(s)
- Jingren Zhong
- Section for Comparative Paediatrics and Nutrition, Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Richard Doughty
- Department of Pathology, Akershus University Hospital, Lørenskog, Norway
| | - Thomas Thymann
- Section for Comparative Paediatrics and Nutrition, Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Per Torp Sangild
- Section for Comparative Paediatrics and Nutrition, Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
- Department of Pediatrics, Odense University Hospital, Odense, Denmark
- Department of Neonatology, Rigshospitalet, Copenhagen, Denmark
| | - Duc Ninh Nguyen
- Section for Comparative Paediatrics and Nutrition, Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Tik Muk
- Section for Comparative Paediatrics and Nutrition, Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark.
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3
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Ma J, Tan J, Zhang W, Bai M, Liu K. Prenatal inflammation exposure accelerates lung cancer tumorigenesis in offspring mouse: possible links to IRE1α/XBP1-mediated M2-like polarization of TAMs and PD-L1 up-expression. Cancer Immunol Immunother 2024; 73:88. [PMID: 38554175 PMCID: PMC10981640 DOI: 10.1007/s00262-024-03666-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 03/01/2024] [Indexed: 04/01/2024]
Abstract
BACKGROUND Prenatal inflammation exposure (PIE) can increase the disease susceptibility in offspring such as lung cancer. Our purpose was to investigate the mechanisms of PIE on lung cancer. METHODS Prenatal BALB/c mice were exposed to lipopolysaccharide (LPS), and then, their offspring were intraperitoneally instilled with urethane to establish the two-stage lung cancer carcinogenesis model. At the 48 weeks of age, the offspring mice were killed and lung tissues were collected for HE, immunohistochemistry, immunofluorescence, and Luminex MAGPIX®-based assays. CD11b + F4/80 + tumor-associated macrophages (TAMs) were sorted out from lung tumor tissues by cell sorting technique. Flow cytometry was employed to evaluate the extent of M2-like polarization of TAMs and PD-L1 expression. RESULTS The offspring of PIE mice revealed more lung lesion changes, including atypical hyperplasia and intrapulmonary metastases. The number of lung nodules, lung organ index, and PCNA, MMP-9 and Vimentin positive cells in lung tissue of PIE group were higher than those of Control group. The increases of mRNA encoding M2 macrophage markers and cytokines in offspring of prenatal LPS-treated mice confirmed the induced effect of PIE on macrophage polarization. Additionally, PIE treatment increased the percentage of CD163 + CD206 + cells in the sorted TAMs. Importantly, endoplasmic reticulum (ER) stress-markers like GRP78/BIP and CHOP, p-IRE1α and XBP1s, and PD-L1 were up-regulated in TAMs from PIE group. Besides, we also observed that IRE1α inhibitor (KIRA6) reversed the M2-like TAMs polarization and metastasis induced by PIE. CONCLUSIONS IRE1α/XBP1-mediated M2-like TAMs polarization releases the pro-tumorigenic cytokines and PD-L1 expression, which may be the regulatory mechanism of accelerating lung cancer in offspring of mice undergoing PIE.
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Affiliation(s)
- Jingbo Ma
- Department of Thoracic Surgery, Seventh Medical Center of Chinese, PLA General Hospital, No. 5, Nanmencang, Dongcheng District, Beijing, 100010, China
| | - Jian Tan
- Department of Thoracic Surgery, Seventh Medical Center of Chinese, PLA General Hospital, No. 5, Nanmencang, Dongcheng District, Beijing, 100010, China
| | - Weiqiang Zhang
- Department of Thoracic Surgery, Seventh Medical Center of Chinese, PLA General Hospital, No. 5, Nanmencang, Dongcheng District, Beijing, 100010, China
| | - Miaochun Bai
- Department of Thoracic Surgery, Seventh Medical Center of Chinese, PLA General Hospital, No. 5, Nanmencang, Dongcheng District, Beijing, 100010, China
| | - Keqiang Liu
- Department of Thoracic Surgery, Seventh Medical Center of Chinese, PLA General Hospital, No. 5, Nanmencang, Dongcheng District, Beijing, 100010, China.
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Sun J, Chong J, Zhang J, Ge L. Preterm pigs for preterm birth research: reasonably feasible. Front Physiol 2023; 14:1189422. [PMID: 37520824 PMCID: PMC10374951 DOI: 10.3389/fphys.2023.1189422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 07/07/2023] [Indexed: 08/01/2023] Open
Abstract
Preterm birth will disrupt the pattern and course of organ development, which may result in morbidity and mortality of newborn infants. Large animal models are crucial resources for developing novel, credible, and effective treatments for preterm infants. This review summarizes the classification, definition, and prevalence of preterm birth, and analyzes the relationship between the predicted animal days and one human year in the most widely used animal models (mice, rats, rabbits, sheep, and pigs) for preterm birth studies. After that, the physiological characteristics of preterm pig models at different gestational ages are described in more detail, including birth weight, body temperature, brain development, cardiovascular system development, respiratory, digestive, and immune system development, kidney development, and blood constituents. Studies on postnatal development and adaptation of preterm pig models of different gestational ages will help to determine the physiological basis for survival and development of very preterm, middle preterm, and late preterm newborns, and will also aid in the study and accurate optimization of feeding conditions, diet- or drug-related interventions for preterm neonates. Finally, this review summarizes several accepted pediatric applications of preterm pig models in nutritional fortification, necrotizing enterocolitis, neonatal encephalopathy and hypothermia intervention, mechanical ventilation, and oxygen therapy for preterm infants.
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Affiliation(s)
- Jing Sun
- Chongqing Academy of Animal Sciences, Chongqing, China
- National Center of Technology Innovation for Pigs, Chongqing, China
- Key Laboratory of Pig Industry Sciences, Ministry of Agriculture, Chongqing, China
| | - Jie Chong
- Chongqing Academy of Animal Sciences, Chongqing, China
- National Center of Technology Innovation for Pigs, Chongqing, China
| | - Jinwei Zhang
- Chongqing Academy of Animal Sciences, Chongqing, China
- National Center of Technology Innovation for Pigs, Chongqing, China
- Key Laboratory of Pig Industry Sciences, Ministry of Agriculture, Chongqing, China
| | - Liangpeng Ge
- Chongqing Academy of Animal Sciences, Chongqing, China
- National Center of Technology Innovation for Pigs, Chongqing, China
- Key Laboratory of Pig Industry Sciences, Ministry of Agriculture, Chongqing, China
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5
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Lipopolysaccharide-Induced Immunological Tolerance in Monocyte-Derived Dendritic Cells. IMMUNO 2022. [DOI: 10.3390/immuno2030030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Bacterial lipopolysaccharides (LPS), also referred to as endotoxins, are major outer surface membrane components present on almost all Gram-negative bacteria and are major determinants of sepsis-related clinical complications including septic shock. LPS acts as a strong stimulator of innate or natural immunity in a wide variety of eukaryotic species ranging from insects to humans including specific effects on the adaptive immune system. However, following immune stimulation, lipopolysaccharide can induce tolerance which is an essential immune-homeostatic response that prevents overactivation of the inflammatory response. The tolerance induced by LPS is a state of reduced immune responsiveness due to persistent and repeated challenges, resulting in decreased expression of pro-inflammatory modulators and up-regulation of antimicrobials and other mediators that promote a reduction of inflammation. The presence of environmental-derived LPS may play a key role in decreasing autoimmune diseases and gut tolerance to the plethora of ingested antigens. The use of LPS may be an important immune adjuvant as demonstrated by the promotion of IDO1 increase when present in the fusion protein complex of CTB-INS (a chimera of the cholera toxin B subunit linked to proinsulin) that inhibits human monocyte-derived DC (moDC) activation, which may act through an IDO1-dependent pathway. The resultant state of DC tolerance can be further enhanced by the presence of residual E. coli lipopolysaccharide (LPS) which is almost always present in partially purified CTB-INS preparations. The approach to using an adjuvant with an autoantigen in immunotherapy promises effective treatment for devastating tissue-specific autoimmune diseases like multiple sclerosis (MS) and type 1 diabetes (T1D).
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Zou Y, Xu Y, Chen X, Wu Y, Fu L, Lv Y. Research Progress on Leucine-Rich Alpha-2 Glycoprotein 1: A Review. Front Pharmacol 2022; 12:809225. [PMID: 35095520 PMCID: PMC8797156 DOI: 10.3389/fphar.2021.809225] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 12/13/2021] [Indexed: 12/18/2022] Open
Abstract
Leucine-rich alpha⁃2 glycoprotein 1 (LRG1) is an important member of the leucine-rich repetitive sequence protein family. LRG1 was mainly involved in normal physiological activities of the nervous system, such as synapse formation, synapse growth, the development of nerve processes, neurotransmitter transfer and release, and cell adhesion molecules or ligand-binding proteins. Also, LRG1 affected the development of respiratory diseases, hematological diseases, endocrine diseases, tumor diseases, eye diseases, cardiovascular diseases, rheumatic immune diseases, infectious diseases, etc. LRG1 was a newly discovered important upstream signaling molecule of transforming growth factor⁃β (TGF⁃β) that affected various pathological processes through the TGF⁃β signaling pathway. However, research on LRG1 and its involvement in the occurrence and development of diseases was still in its infancy and the current studies were mainly focused on proteomic detection and basic animal experimental reports. We could reasonably predict that LRG1 might act as a new direction and strategy for the treatment of many diseases.
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Affiliation(s)
- Yonghui Zou
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang, China.,School of Clinical Medicine, Nanchang University, Nanchang, China
| | - Yi Xu
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang, China.,School of Clinical Medicine, Nanchang University, Nanchang, China
| | - Xiaofeng Chen
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang, China.,School of Clinical Medicine, Nanchang University, Nanchang, China
| | - Yaoqi Wu
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang, China.,College of Pharmacy, Nanchang University, Nanchang, China
| | - Longsheng Fu
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yanni Lv
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, Nanchang, China
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7
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Muk T, Stensballe A, Dmytriyeva O, Brunse A, Jiang PP, Thymann T, Sangild PT, Pankratova S. Differential Brain and Cerebrospinal Fluid Proteomic Responses to Acute Prenatal Endotoxin Exposure. Mol Neurobiol 2022; 59:2204-2218. [PMID: 35064541 DOI: 10.1007/s12035-022-02753-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 01/17/2022] [Indexed: 12/12/2022]
Abstract
Chorioamnionitis (CA) is a risk factor for preterm birth and is associated with neurodevelopmental delay and cognitive disorders. Prenatal inflammation-induced brain injury may resolve during the immediate postnatal period when rapid brain remodeling occurs. Cerebrospinal fluid (CSF) collected at birth may be a critical source of predictive biomarkers. Using pigs as a model of preterm infants exposed to CA, we hypothesized that prenatal lipopolysaccharide (LPS) exposure induces proteome changes in the CSF and brain at birth and postnatally. Fetal piglets (103 days gestation of full-term at 117 days) were administered intra-amniotic (IA) lipopolysaccharide (LPS) 3 days before preterm delivery by caesarian section. CSF and brain tissue were collected on postnatal Days 1 and 5 (P1 and P5). CSF and hippocampal proteins were profiled by LC-MS-based quantitative proteomics. Neuroinflammatory responses in the cerebral cortex, periventricular white matter and hippocampus were evaluated by immunohistochemistry, and gene expression was evaluated by qPCR. Pigs exposed to LPS in utero showed changes in CSF protein levels at birth but not at P5. Complement protein C3, hemopexin, vasoactive intestinal peptide, carboxypeptidase N subunit 2, ITIH1, and plasminogen expression were upregulated in the CSF, while proteins associated with axon growth and synaptic functions (FGFR1, BASP1, HSPD1, UBER2N, and RCN2), adhesion (talin1), and neuronal survival (Atox1) were downregulated. Microglia, but not astrocytes, were activated by LPS at P5 in the hippocampus but not in other brain regions. At this time, marginal increases in complement protein C3, LBP, HIF1a, Basp1, Minpp1, and FGFR1 transcription indicated hippocampal proinflammatory responses. In conclusion, few days exposure to endotoxin prenatally induce proteome changes in the CSF and brain at birth, but most changes resolve a few days later. The developing hippocampus has high neuronal plasticity in response to perinatal inflammation. Changes in CSF protein expression at birth may predict later structural brain damage in preterm infants exposed to variable types and durations of CA-related inflammation in utero.
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Affiliation(s)
- Tik Muk
- Section of Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Allan Stensballe
- Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Oksana Dmytriyeva
- Faculty of Health and Medical Sciences, Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, Denmark
| | - Anders Brunse
- Section of Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ping-Ping Jiang
- Section of Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Thomas Thymann
- Section of Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Per Torp Sangild
- Section of Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Pediatrics and Adolescent Medicine, Rigshospitalet, Copenhagen, Denmark.,Department of Paediatrics, Odense University Hospital, Odense, Denmark
| | - Stanislava Pankratova
- Section of Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. .,Comparative Pediatrics and Nutrition, Department of Veterinary and Animal Sciences, University of Copenhagen, 1870, Frederiksberg C, Denmark.
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8
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Hoogenboom LA, Lely AT, Kemp MW, Saito M, Jobe AH, Wolfs TGAM, Schreuder MF. Chorioamnionitis Causes Kidney Inflammation, Podocyte Damage, and Pro-fibrotic Changes in Fetal Lambs. Front Pediatr 2022; 10:796702. [PMID: 35444963 PMCID: PMC9013807 DOI: 10.3389/fped.2022.796702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Accepted: 03/01/2022] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Perinatal complications, such as prematurity and intrauterine growth restriction, are associated with increased risk of chronic kidney disease. Although often associated with reduced nephron endowment, there is also evidence of increased susceptibility for sclerotic changes and podocyte alterations. Preterm birth is frequently associated with chorioamnionitis, though studies regarding the effect of chorioamnionitis on the kidney are scarce. In this study, we aim to unravel the consequences of premature birth and/or perinatal inflammation on kidney development using an ovine model. METHODS In a preterm sheep model, chorioamnionitis was induced by intra-amniotic injection of lipopolysaccharide (LPS) at either 2, 8, or 15 days prior to delivery. Control animals received intra-amniotic injections of sterile saline. All lambs were surgically delivered at 125 days' gestation (full term is 150 days) and immediately euthanized for necropsy. Kidneys were harvested and processed for staining with myeloperoxidase (MPO), Wilms tumor-1 (WT1) and alpha-smooth muscle actine (aSMA). mRNA expression of tumor necrosis factor alpha (TNFA), Interleukin 10 (IL10), desmin (DES), Platelet derived growth factor beta (PDGFB), Platelet derived growth factor receptor beta (PDGFRB), synaptopodin (SYNPO), and transforming growth factor beta (TGFB) was measured using quantitative PCR. RESULTS Animals with extended (but not acute) LPS exposure had an inflammatory response in the kidney. MPO staining was significantly increased after 8 and 15 days (p = 0.003 and p = 0.008, respectively). Expression of TNFA (p = 0.016) and IL10 (p = 0.026) transcripts was increased, peaking on day 8 after LPS exposure. Glomerular aSMA and expression of TGFB was increased on day 8, suggesting pro-fibrotic mesangial activation, however, this was not confirmed with PDFGB or PDGFRB. The number of WT1 positive nuclei in the glomerulus, as well as expression of synaptopodin, decreased, indicating podocyte injury. CONCLUSION We report that, in an ovine model of prematurity, LPS-induced chorioamnionitis leads to inflammation of the immature kidney. In addition, this process was associated with podocyte injury and there are markers to support pro-fibrotic changes to the glomerular mesangium. These data suggest a potential important role for antenatal inflammation in the development of preterm-associated kidney disease, which is frequent.
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Affiliation(s)
- Lieke A Hoogenboom
- Department of Pediatrics, Maastricht University Medical Centre, Maastricht, Netherlands.,Department of Pediatric Nephrology, Radboudumc Amalia Children's Hospital, Nijmegen, Netherlands
| | - A Titia Lely
- Department of Obstetrics, Wilhelmina Children's Hospital Birth Center, University Medical Center Utrecht, University of Utrecht, Utrecht, Netherlands
| | - Matthew W Kemp
- Centre for Perinatal and Neonatal Medicine, Tohoku University Hospital, Sendai, Japan.,Division of Obstetrics and Gynaecology, The University of Western Australia, Perth, WA, Australia.,Women and Infants Research Foundation, Perth, WA, Australia.,Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Masatoshi Saito
- Centre for Perinatal and Neonatal Medicine, Tohoku University Hospital, Sendai, Japan
| | - Alan H Jobe
- Division of Neonatology/Pulmonary Biology, The Perinatal Institute, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, OH, United States
| | - Tim G A M Wolfs
- Department of Pediatrics, School for Oncology and Developmental Biology (GROW), Maastricht University, Maastricht, Netherlands.,Department of Biomedical Engineering (BMT), Maastricht University, Maastricht, Netherlands
| | - Michiel F Schreuder
- Department of Pediatric Nephrology, Radboudumc Amalia Children's Hospital, Nijmegen, Netherlands
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9
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Cwiek A, Suzuki M, deRonde K, Conaway M, Bennett KM, El Dahr S, Reidy KJ, Charlton JR. Premature differentiation of nephron progenitor cell and dysregulation of gene pathways critical to kidney development in a model of preterm birth. Sci Rep 2021; 11:21667. [PMID: 34737344 PMCID: PMC8569166 DOI: 10.1038/s41598-021-00489-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 10/05/2021] [Indexed: 12/31/2022] Open
Abstract
Preterm birth is a leading cause of neonatal morbidity. Survivors have a greater risk for kidney dysfunction and hypertension. Little is known about the molecular changes that occur in the kidney of individuals born preterm. Here, we demonstrate that mice delivered two days prior to full term gestation undergo premature cessation of nephrogenesis, resulting in a lower glomerular density. Kidneys from preterm and term groups exhibited differences in gene expression profiles at 20- and 27-days post-conception, including significant differences in the expression of fat-soluble vitamin-related genes. Kidneys of the preterm mice exhibited decreased proportions of endothelial cells and a lower expression of genes promoting angiogenesis compared to the term group. Kidneys from the preterm mice also had altered nephron progenitor subpopulations, early Six2 depletion, and altered Jag1 expression in the nephrogenic zone, consistent with premature differentiation of nephron progenitor cells. In conclusion, preterm birth alone was sufficient to shorten the duration of nephrogenesis and cause premature differentiation of nephron progenitor cells. These candidate genes and pathways may provide targets to improve kidney health in preterm infants.
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Affiliation(s)
- Aleksandra Cwiek
- Division of Nephrology, Department of Pediatrics, University of Virginia, Box 800386, Charlottesville, VA, 22903, USA
- Cell & Developmental Biology Graduate Program, University of Virginia School of Medicine, Charlottesville, VA, 22903, USA
| | - Masako Suzuki
- Department of Genetics, Albert Einstein College of Medicine, New York, NY, USA
| | - Kimberly deRonde
- Division of Nephrology, Department of Pediatrics, University of Virginia, Box 800386, Charlottesville, VA, 22903, USA
| | - Mark Conaway
- University of Virginia Health System, Charlottesville, VA, USA
- Division of Translational Research and Applied Statistics, Department of Public Health Sciences, University of Virginia School of Medicine, University of Virginia, Charlottesville, VA, USA
| | - Kevin M Bennett
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Samir El Dahr
- Department of Pediatrics, Tulane University School of Medicine and Children's Hospital of New Orleans, New Orleans, LA, USA
| | - Kimberly J Reidy
- Division of Nephrology, Department of Pediatrics, Children's Hospital at Montefiore, New York, NY, USA
| | - Jennifer R Charlton
- Division of Nephrology, Department of Pediatrics, University of Virginia, Box 800386, Charlottesville, VA, 22903, USA.
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10
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Stantsidou A, Pagonopoulou O, Deftereou T. Effects of chorioamnionitis in fetal renal glomeruli. Hippokratia 2021; 25:98. [PMID: 35937516 PMCID: PMC9347347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
- A Stantsidou
- 1Laboratory of Histology-Embryology, Medical Department, Democritus University of Thrace, Greece
- 2Laboratory of Physiology, Medical Department, Democritus University of Thrace, Greece
| | - O Pagonopoulou
- 1Laboratory of Histology-Embryology, Medical Department, Democritus University of Thrace, Greece
- 2Laboratory of Physiology, Medical Department, Democritus University of Thrace, Greece
| | - Te Deftereou
- 1Laboratory of Histology-Embryology, Medical Department, Democritus University of Thrace, Greece
- 2Laboratory of Physiology, Medical Department, Democritus University of Thrace, Greece
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11
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Bæk O, Cilieborg MS, Nguyen DN, Bering SB, Thymann T, Sangild PT. Sex-Specific Survival, Growth, Immunity and Organ Development in Preterm Pigs as Models for Immature Newborns. Front Pediatr 2021; 9:626101. [PMID: 33643975 PMCID: PMC7905020 DOI: 10.3389/fped.2021.626101] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 01/21/2021] [Indexed: 12/18/2022] Open
Abstract
Background: After very preterm birth, male infants show higher mortality than females, with higher incidence of lung immaturity, neurological deficits, infections, and growth failure. In modern pig production, piglets dying in the perinatal period (up to 20%) often show signs of immature organs, but sex-specific effects are not clear. Using preterm pigs as model for immature infants and piglets, we hypothesized that neonatal survival and initial growth and immune development depend on sex. Methods: Using data from a series of previous intervention trials with similar delivery and rearing procedures, we established three cohorts of preterm pigs (90% gestation), reared for 5, 9, or 19 days before sample collection (total n = 1,938 piglets from 109 litters). Partly overlapping endpoints among experiments allowed for multiple comparisons between males and females for data on mortality, body and organ growth, gut, immunity, and brain function. Results: Within the first 2 days, males showed higher mortality than females (18 vs. 8%, P < 0.001), but less severe immune response to gram-positive infection. No effect of sex was observed for thermoregulation or plasma cortisol. Later, infection resistance did not differ between sexes, but growth rate was reduced for body (up to -40%) and kidneys (-6%) in males, with higher leucocyte counts (+15%) and lower CD4 T cell fraction (-5%) on day 9 and lower monocyte counts (-18%, day 19, all P < 0.05). Gut structure, function and necrotizing enterocolitis (NEC) incidence were similar between groups, but intestinal weight (-3%) and brush-border enzyme activities were reduced at day 5 (lactase, DPP IV, -8%) in males. Remaining values for blood biochemistry, hematology, bone density, regional brain weights, and visual memory (tested in a T maze) were similar. Conclusion: Following preterm birth, male pigs show higher mortality and slower growth than females, despite limited differences in organ growth, gut, immune, and brain functions. Neonatal intensive care procedures may be particularly important for compromised newborns of the male sex. Preterm pigs can serve as good models to study the interactions of sex- and maturation-specific survival and physiological adaptation in mammals.
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Affiliation(s)
- Ole Bæk
- Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Malene Skovsted Cilieborg
- Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Duc Ninh Nguyen
- Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Stine Brandt Bering
- Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Thomas Thymann
- Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Per Torp Sangild
- Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark.,Department of Neonatology, Rigshospitalet, Copenhagen, Denmark.,Department of Pediatrics, Odense University Hospital, Odense, Denmark
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