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Ke X, Xia S, Yu W, Mabry S, Fu Q, Menden HL, Sampath V, Lane RH. Delta like 4 regulates cerebrovascular development and endothelial integrity via DLL4-NOTCH-CLDN5 pathway and is vulnerable to neonatal hyperoxia. J Physiol 2024. [PMID: 38632887 DOI: 10.1113/jp285716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 03/19/2024] [Indexed: 04/19/2024] Open
Abstract
The mechanisms governing brain vascularization during development remain poorly understood. A key regulator of developmental vascularization is delta like 4 (DLL4), a Notch ligand prominently expressed in endothelial cells (EC). Exposure to hyperoxia in premature infants can disrupt the development and functions of cerebral blood vessels and lead to long-term cognitive impairment. However, its role in cerebral vascular development and the impact of postnatal hyperoxia on DLL4 expression in mouse brain EC have not been explored. We determined the DLL4 expression pattern and its downstream signalling gene expression in brain EC using Dll4+/+ and Dll4+/LacZ mice. We also performed in vitro studies using human brain microvascular endothelial cells. Finally, we determined Dll4 and Cldn5 expression in mouse brain EC exposed to postnatal hyperoxia. DLL4 is expressed in various cell types, with EC being the predominant one in immature brains. Moreover, DLL4 deficiency leads to persistent abnormalities in brain microvasculature and increased vascular permeability both in vivo and in vitro. We have identified that DLL4 insufficiency compromises endothelial integrity through the NOTCH-NICD-RBPJ-CLDN5 pathway, resulting in the downregulation of the tight junction protein claudin 5 (CLDN5). Finally, exposure to neonatal hyperoxia reduces DLL4 and CLDN5 expression in developing mouse brain EC. We reveal that DLL4 is indispensable for brain vascular development and maintaining the blood-brain barrier's function and is repressed by neonatal hyperoxia. We speculate that reduced DLL4 signalling in brain EC may contribute to the impaired brain development observed in neonates exposed to hyperoxia. KEY POINTS: The role of delta like 4 (DLL4), a Notch ligand in vascular endothelial cells, in brain vascular development and functions remains unknown. We demonstrate that DLL4 is expressed at a high level during postnatal brain development in immature brains and DLL4 insufficiency leads to abnormal cerebral vasculature and increases vascular permeability both in vivo and in vitro. We identify that DLL4 regulates endothelial integrity through NOTCH-NICD-RBPJ-CLDN5 signalling. Dll4 and Cldn5 expression are decreased in mouse brain endothelial cells exposed to postnatal hyperoxia.
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Affiliation(s)
- Xingrao Ke
- Department of Pediatrics Division of Neonatology, Children's Mercy, Kansas City, MO, USA
| | - Sheng Xia
- Department of Pediatrics Division of Neonatology, Children's Mercy, Kansas City, MO, USA
| | - Wei Yu
- Department of Pediatrics Division of Neonatology, Children's Mercy, Kansas City, MO, USA
| | - Sherry Mabry
- Department of Pediatrics Division of Neonatology, Children's Mercy, Kansas City, MO, USA
| | - Qi Fu
- Department of Pediatrics Division of Neonatology, Children's Mercy, Kansas City, MO, USA
| | - Heather L Menden
- Department of Pediatrics Division of Neonatology, Children's Mercy, Kansas City, MO, USA
| | - Venkatesh Sampath
- Department of Pediatrics Division of Neonatology, Children's Mercy, Kansas City, MO, USA
| | - Robert H Lane
- Department of Administration, Children Mercy Research Institute, Children's Mercy, Kansas City, MO, USA
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Bradley T, Tucker M, Sampath V. Correction: Triggered - does maternal COVID-19 program an exaggerated immune response in neonates? Pediatr Res 2024; 95:1383. [PMID: 38243060 DOI: 10.1038/s41390-024-03052-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2024]
Affiliation(s)
- Todd Bradley
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO, USA
| | - Megan Tucker
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, MO, USA
| | - Venkatesh Sampath
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, MO, USA.
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Cuna A, Premkumar MH, Sampath V. Artificial intelligence to classify acquired intestinal injury in preterm neonates-a new perspective. Pediatr Res 2024:10.1038/s41390-024-03148-w. [PMID: 38499626 DOI: 10.1038/s41390-024-03148-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 03/02/2024] [Indexed: 03/20/2024]
Affiliation(s)
- Alain Cuna
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, MO, USA
- School of Medicine, University of Missouri Kansas City, Kansas City, MO, USA
| | - Muralidhar H Premkumar
- Division of Neonatology, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA
| | - Venkatesh Sampath
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, MO, USA.
- School of Medicine, University of Missouri Kansas City, Kansas City, MO, USA.
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Bearer C, Abman SH, Agostoni C, Ballard P, Bliss J, de Boode WP, Canpolat FE, Chalak L, Cilio MR, Dammann O, Davis J, El-Metwally D, Ferriero D, Ford S, Fuentes-Afflick E, Gano D, Giussani D, Gonzalez F, Gunn A, Hogeveen M, Huang AY, Kaplan J, Klebanoff M, Lachman P, Mak R, Malhotra A, Miller S, Mitchell WB, Molloy E, Mulkey SB, Roland D, Sampath V, Sant'Anna G, Schaff P, Singer LT, Stroustrup A, Tingay D, Tiribelli C, Toldi G, Tryggestad J, Valente EM, Wilson-Costello D, Zupancic J. Asperger's syndrome - about time to rename it? Pediatr Res 2024; 95:582-584. [PMID: 37957241 DOI: 10.1038/s41390-023-02885-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023]
Affiliation(s)
- Cynthia Bearer
- University Hospitals Rainbow Babies & Children's Hospital, Cleveland, OH, USA.
| | - Steven H Abman
- University of Colorado School of Medicine, Aurora, CO, USA
| | | | - Phil Ballard
- University of San Francisco, San Francisco, CA, USA
| | - Joe Bliss
- Brown University, Providence, RI, USA
| | | | - Fuat Emre Canpolat
- University of Health Sciences, Ankara Bilkent City Hospital, Çankaya/Ankara, Türkiye
| | - Lina Chalak
- UT Southwestern Medical Center, Dallas, TX, USA
| | | | - Olaf Dammann
- Public Health and Community Medicine, Tufts University, Boston, MA, USA
| | | | | | - Donna Ferriero
- University of California San Francisco, San Francisco, CA, USA
| | - Stephanie Ford
- University Hospitals Rainbow Babies & Children's Hospital, Cleveland, OH, USA
| | | | - Dawn Gano
- Departments of Neurology and Pediatrics, University of California San Francisco, San Francisco, CA, USA
| | | | | | | | - Marije Hogeveen
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - Alex Y Huang
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Jenny Kaplan
- Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | | | - Peter Lachman
- Royal College of Physicians of Ireland RCPI, Dublin, Ireland
| | - Robert Mak
- Rady Children's Hospital, San Diego, CA, USA
| | | | - Steven Miller
- UBC and BC Children's Hospital, Vancouver, BC, Canada
- Research Institute of SickKids, Toronto, ON, Canada
| | | | | | | | | | | | | | - Pam Schaff
- Keck School of Medicine of University of Southern California, Los Angeles, CA, USA
| | - Lynn T Singer
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | | | - David Tingay
- Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | | | | | | | | | - Dee Wilson-Costello
- University Hospitals Rainbow Babies & Children's Hospital, Cleveland, OH, USA
| | - John Zupancic
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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Bradley T, Tucker M, Sampath V. Triggered - does maternal COVID-19 program an exaggerated immune response in neonates? Pediatr Res 2024:10.1038/s41390-023-03007-0. [PMID: 38172211 DOI: 10.1038/s41390-023-03007-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 12/15/2023] [Indexed: 01/05/2024]
Affiliation(s)
- Todd Bradley
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO, USA
| | - Megan Tucker
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, MO, USA
| | - Venkatesh Sampath
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, MO, USA.
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Kumar N, Al-Nahar M, Harris N, Sampath V. Early and Higher Volumes of Formula Supplementation after Birth Impact Breastfeeding Rates at Discharge in Well-Baby Nursery: A Retrospective Cohort Study. Am J Perinatol 2023. [PMID: 38011861 DOI: 10.1055/a-2217-9174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
OBJECTIVE Physiologic breast milk production in the first 24 hours is estimated to be between 2 and 10 mL per feed. Many mothers intending to breastfeed use formula supplementation (FS) early on, which can affect successful breastfeeding. Whether the volume and timing of FS introduced in the first 24 hours of life (24 HOL) impacts the rate of "breastfeeding at discharge" (BFAD) is not well-studied and was investigated herein. STUDY DESIGN Single-center, retrospective, chart review of breastfeeding infants born at ≥35 weeks who received supplementation in the first 24 HOL. Comprehensive demographic data pertaining to maternal and infant characteristics, along with infant feeding data, were collected. Four supplementation characteristics, (timing, rate, volume [mL/kg per feed], and type [expressed breast milk (EBM) or formula]) were correlated with BFAD. RESULTS Among 3,102 supplemented infants in whom mothers intended to breastfeed, 1,031 (33.2%) infants were BFAD. At baseline, African American, Medicaid-insured, and single mothers had lower odds of BFAD. The overall maximum volume of FS per feed was 11.0 mL/kg (interquartile range 8.0-14.4). With each hour of delay in first supplementation, the odds of BFAD increased by 2.8% (95% confidence interval [CI] 0.022, 0.035). With every 1 mL/kg increase in the first formula volume, subsequent supplementation frequency increased by 4.5%. A positive association was observed between BFAD and a lower rate of supplementation (cutoff value ≤35.1%). However, among infants with these lower rates of supplementation, each unit increase in maximum FS, from 2 to 15 mL/kg, decreased the probability of BFAD by 4.2% (3.6-4.7%). Additionally, we observed that infants who were given at least one EBM supplementation (n = 223; 7.2%) had substantially increased rates of BFAD (odds ratio [OR] = 9.8, 95% CI 7.2-13.3). CONCLUSION Early and higher volumes of FS negatively impacted BFAD. Birthweight-based FS of feeding with physiological volumes may increase breastfeeding rates at discharge. KEY POINTS · Higher volumes of first supplementation increases subsequent supplementation frequency.. · For each unit increase in maximum supplementation, BFAD probability decreases by 4.2%.. · Even one EBM supplementation increases rates of BFAD..
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Affiliation(s)
- Navin Kumar
- Department of Pediatrics/Neonatology, Hurley Children's Hospital, Flint, Michigan
| | - Mohammed Al-Nahar
- Department of Pediatrics/Neonatology, Hurley Children's Hospital, Flint, Michigan
| | - Nathalee Harris
- Department of Pediatrics/Neonatology, Hurley Children's Hospital, Flint, Michigan
| | - Venkatesh Sampath
- Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
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Martinez M, Yu W, Menden HL, Lei T, Monaghan-Nichols P, Sampath V. Butyrate suppresses experimental necrotizing enterocolitis-induced brain injury in mice. Front Pediatr 2023; 11:1284085. [PMID: 38130941 PMCID: PMC10733464 DOI: 10.3389/fped.2023.1284085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Accepted: 11/15/2023] [Indexed: 12/23/2023] Open
Abstract
Background Necrotizing enterocolitis (NEC) is a devastating disease in premature infants, and 50% of infants with surgical NEC develop neurodevelopmental defects. The mechanisms by which NEC-induced cytokine release and activation of inflammatory cells in the brain mediate neuronal injury, and whether enteral immunotherapy attenuates NEC-associated brain injury remain understudied. Based on our prior work, which demonstrated that experimental NEC-like intestinal injury is attenuated by the short-chain fatty acid, butyrate, in this study, we hypothesize that NEC-induced brain injury would be suppressed by enteral butyrate supplementation. Methods A standardized NEC mouse model [enteral formula feeding, lipopolysaccharide (LPS), and hypoxia] was used. Mice were randomized into the following groups: control, NEC, butyrate pretreated NEC, and butyrate control. NEC scoring (1-4 with 4 representing severe injury) was performed on ileal sections using a validated scoring system. Intestinal and brain lysates were used to assess inflammation, proinflammatory signaling, and apoptosis. Results NEC-induced intestinal injury was attenuated by butyrate supplementation. NEC-induced microglial activation in the cerebral cortex and hippocampus was suppressed with butyrate. NEC increased the number of activated microglial cells but decreased the number of oligodendrocytes. Butyrate pretreatment attenuated these changes. Increased activation of proinflammatory Toll-like receptor signaling, cytokine expression, and induction of GFAP and IBA1 in the cerebral cortex observed with NEC was suppressed with butyrate. Conclusion Experimental NEC induced inflammation and activation of microglia in several regions of the brain, most prominently in the cortex. NEC-induced neuroinflammation was suppressed with butyrate pretreatment. The addition of short-chain fatty acids to diet may be used to attenuate NEC-induced intestinal injury and neuroinflammation in preterm infants.
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Affiliation(s)
- Maribel Martinez
- Division of Neonatology, Department of Pediatrics, Children’s Mercy Kansas City, Kansas, MO, United States
- Neonatal Diseases Research Program, Children’s Mercy Research Institute, Children’s Mercy Kansas City, Kansas, MO, United States
| | - Wei Yu
- Division of Neonatology, Department of Pediatrics, Children’s Mercy Kansas City, Kansas, MO, United States
- Neonatal Diseases Research Program, Children’s Mercy Research Institute, Children’s Mercy Kansas City, Kansas, MO, United States
| | - Heather L. Menden
- Division of Neonatology, Department of Pediatrics, Children’s Mercy Kansas City, Kansas, MO, United States
- Neonatal Diseases Research Program, Children’s Mercy Research Institute, Children’s Mercy Kansas City, Kansas, MO, United States
| | - Tianhua Lei
- Department of Biomedical Sciences, University of Missouri Kansas City School of Medicine, Kansas, MO, United States
| | - Paula Monaghan-Nichols
- Department of Biomedical Sciences, University of Missouri Kansas City School of Medicine, Kansas, MO, United States
| | - Venkatesh Sampath
- Division of Neonatology, Department of Pediatrics, Children’s Mercy Kansas City, Kansas, MO, United States
- Neonatal Diseases Research Program, Children’s Mercy Research Institute, Children’s Mercy Kansas City, Kansas, MO, United States
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Zha D, Wang S, Monaghan-Nichols P, Qian Y, Sampath V, Fu M. Mechanisms of Endothelial Cell Membrane Repair: Progress and Perspectives. Cells 2023; 12:2648. [PMID: 37998383 PMCID: PMC10670313 DOI: 10.3390/cells12222648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 11/25/2023] Open
Abstract
Endothelial cells are the crucial inner lining of blood vessels, which are pivotal in vascular homeostasis and integrity. However, these cells are perpetually subjected to a myriad of mechanical, chemical, and biological stresses that can compromise their plasma membranes. A sophisticated repair system involving key molecules, such as calcium, annexins, dysferlin, and MG53, is essential for maintaining endothelial viability. These components orchestrate complex mechanisms, including exocytosis and endocytosis, to repair membrane disruptions. Dysfunctions in this repair machinery, often exacerbated by aging, are linked to endothelial cell death, subsequently contributing to the onset of atherosclerosis and the progression of cardiovascular diseases (CVD) and stroke, major causes of mortality in the United States. Thus, identifying the core machinery for endothelial cell membrane repair is critically important for understanding the pathogenesis of CVD and stroke and developing novel therapeutic strategies for combating CVD and stroke. This review summarizes the recent advances in understanding the mechanisms of endothelial cell membrane repair. The future directions of this research area are also highlighted.
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Affiliation(s)
- Duoduo Zha
- Department of Biomedical Science, School of Medicine, University of Missouri Kansas City, 2411 Holmes Street, Kansas City, MO 64108, USA; (D.Z.); (P.M.-N.)
- The National Engineering Research Center for Bioengineering Drugs and Technologies, Institute of Translational Medicine, Nanchang University, 1299 Xuefu Rd, Honggu District, Nanchang 330031, China;
| | - Shizhen Wang
- Division of Biological and Biomedical Systems, School of Science and Engineering, University of Missouri Kansas City, 5009 Rockhill Road, Kansas City, MO 64110, USA;
| | - Paula Monaghan-Nichols
- Department of Biomedical Science, School of Medicine, University of Missouri Kansas City, 2411 Holmes Street, Kansas City, MO 64108, USA; (D.Z.); (P.M.-N.)
| | - Yisong Qian
- The National Engineering Research Center for Bioengineering Drugs and Technologies, Institute of Translational Medicine, Nanchang University, 1299 Xuefu Rd, Honggu District, Nanchang 330031, China;
| | - Venkatesh Sampath
- Department of Pediatric, Children’s Mercy Hospital, Children’s Mercy Research Institute, Kansas City, MO 64108, USA;
| | - Mingui Fu
- Department of Biomedical Science, School of Medicine, University of Missouri Kansas City, 2411 Holmes Street, Kansas City, MO 64108, USA; (D.Z.); (P.M.-N.)
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Xia S, Menden HL, Mabry SM, Sampath V. HDAC6 and ERK/ADAM17 Regulate VEGF-Induced NOTCH Signaling in Lung Endothelial Cells. Cells 2023; 12:2231. [PMID: 37759454 PMCID: PMC10526732 DOI: 10.3390/cells12182231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/22/2023] [Accepted: 08/31/2023] [Indexed: 09/29/2023] Open
Abstract
Angiogenesis plays a critical role in various physiological and pathological processes and is regulated by VEGF. Histone Deacetylase 6 (HDAC6) is a class IIB HDAC that regulates cytoplasmic signaling through deacetylation and is emerging as a target for modulating angiogenesis. We investigated the hypothesis that VEGF-induced endothelial cell (EC) NOTCH signaling is regulated by HDAC6 through acetylation of NOTCH intracellular cytoplasmic domain (NICD). In pulmonary endothelial cells (EC), VEGF-induced activation of the NICD transcriptional response was regulated by ERK1/2 and ADAM 17 and required DLL4. While HDAC6 inhibition induced the acetylation of NICD and stabilized NICD, it repressed NICD-SNW1 binding required for the NOTCH transcriptional responses. In vitro experiments showed that HDAC6 inhibition inhibited lung EC angiogenesis, and neonatal mice treated with a systemic HDAC6 inhibitor had significantly altered angiogenesis and alveolarization. These findings shed light on the role of HDAC6 in modulating VEGF-induced angiogenesis through acetylation and repression of the transcriptional regulators, NICD and SNW1.
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Affiliation(s)
| | | | | | - Venkatesh Sampath
- Division of Neonatology, Department of Pediatrics, Children’s Mercy, Kansas City, MO 64108, USA; (S.X.); (H.L.M.); (S.M.M.)
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Kumar N, Oredein I, Al-Nahar M, Harris N, Sampath V. Impact of feeding volumes in the first 24 h of life on neonatal feeding intolerance. Front Pediatr 2023; 11:1245947. [PMID: 37705598 PMCID: PMC10495575 DOI: 10.3389/fped.2023.1245947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Accepted: 08/03/2023] [Indexed: 09/15/2023] Open
Abstract
Objective This study investigates whether volumes of intake in the first 24 h of life (24 HOL), in relation to birth weight (BW) and gestational age (GA), impact neonatal feeding intolerance (FI). Methods This study employed a retrospective chart review of 6,650 infants born at ≥35 weeks. The volumes of each formula feed per kg BW in the first 24 HOL were assessed. FI was defined as evidenced by chart documentation of emesis, abdominal distension, abdominal x-ray, and/or switching to a sensitive formula. Results Overall, the maximum volume of formula intake per feed was inversely correlated with GA and was higher in infants with FI (β = -1.39, p < 0.001) compared with infants without FI (β = -1.28, p < 0.001). The odds of emesis in late preterm infants with first feeding of >8 ml/kg [adjusted odds ratio (AOR) = 2.5, 95% confidence interval (CI): 1.4-4.6] and formula switching in the exclusively formula-fed group with volumes >10.5 ml/kg [AOR = 2.2, 95% CI (1.8-2.6)] were high. In the breastfeeding group, the odds of FI increased by 2.8-, 4.6-, and 5.2-fold with 5-10, 10-15, and >15 ml/kg of supplementations, respectively. Conclusion A higher volume of intake in relation to BW often exceeds the physiological stomach capacity of newborns and is associated with early FI. Optimizing early feeding volumes based on infant BW and GA may decrease FI, which may be an issue of volume intolerance.
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Affiliation(s)
- Navin Kumar
- Division of Neonatology, Hurley Children’s Hospital, Flint, MI, United States
| | | | - Mohammed Al-Nahar
- Division of Neonatology, Hurley Children’s Hospital, Flint, MI, United States
| | - Nathalee Harris
- Division of Neonatology, Hurley Children’s Hospital, Flint, MI, United States
| | - Venkatesh Sampath
- Division of Neonatology, Children’s Mercy Hospital, Kansas City, MO, United States
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Tan C, Norden PR, Yu W, Liu T, Ujiie N, Lee SK, Yan X, Dyakiv Y, Aoto K, Ortega S, De Plaen IG, Sampath V, Kume T. Endothelial FOXC1 and FOXC2 promote intestinal regeneration after ischemia-reperfusion injury. EMBO Rep 2023; 24:e56030. [PMID: 37154714 PMCID: PMC10328078 DOI: 10.15252/embr.202256030] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 04/07/2023] [Accepted: 04/19/2023] [Indexed: 05/10/2023] Open
Abstract
Intestinal ischemia underlies several clinical conditions and can result in the loss of the intestinal mucosal barrier. Ischemia-induced damage to the intestinal epithelium is repaired by stimulation of intestinal stem cells (ISCs), and paracrine signaling from the vascular niche regulates intestinal regeneration. Here, we identify FOXC1 and FOXC2 as essential regulators of paracrine signaling in intestinal regeneration after ischemia-reperfusion (I/R) injury. Vascular endothelial cell (EC)- and lymphatic EC (LEC)-specific deletions of Foxc1, Foxc2, or both in mice worsen I/R-induced intestinal damage by causing defects in vascular regrowth, expression of chemokine CXCL12 and Wnt activator R-spondin 3 (RSPO3) in blood ECs (BECs) and LECs, respectively, and activation of Wnt signaling in ISCs. Both FOXC1 and FOXC2 directly bind to regulatory elements of the CXCL12 and RSPO3 loci in BECs and LECs, respectively. Treatment with CXCL12 and RSPO3 rescues the I/R-induced intestinal damage in EC- and LEC-Foxc mutant mice, respectively. This study provides evidence that FOXC1 and FOXC2 are required for intestinal regeneration by stimulating paracrine CXCL12 and Wnt signaling.
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Affiliation(s)
- Can Tan
- Department of Medicine, Feinberg Cardiovascular and Renal Research Institute, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Pieter R Norden
- Department of Medicine, Feinberg Cardiovascular and Renal Research Institute, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Wei Yu
- Division of Neonatology, Department of PediatricsChildren's Mercy HospitalKansas CityMOUSA
| | - Ting Liu
- Department of Medicine, Feinberg Cardiovascular and Renal Research Institute, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Naoto Ujiie
- Department of Medicine, Feinberg Cardiovascular and Renal Research Institute, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Sun Kyong Lee
- Department of Medicine, Feinberg Cardiovascular and Renal Research Institute, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Xiaocai Yan
- Department of Pediatrics, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Yaryna Dyakiv
- Department of Medicine, Feinberg Cardiovascular and Renal Research Institute, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Kazushi Aoto
- Department of BiochemistryHamamatsu University School of MedicineHamamatsuJapan
| | - Sagrario Ortega
- Mouse Genome Editing Unit, Biotechnology ProgramSpanish National Cancer Research CentreMadridSpain
| | - Isabelle G De Plaen
- Department of Pediatrics, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Venkatesh Sampath
- Division of Neonatology, Department of PediatricsChildren's Mercy HospitalKansas CityMOUSA
| | - Tsutomu Kume
- Department of Medicine, Feinberg Cardiovascular and Renal Research Institute, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
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Cuna A, Nsumu M, Menden HL, Chavez-Bueno S, Sampath V. The Detrimental Effects of Peripartum Antibiotics on Gut Proliferation and Formula Feeding Injury in Neonatal Mice Are Alleviated with Lactobacillus rhamnosus GG. Microorganisms 2023; 11:1482. [PMID: 37374984 DOI: 10.3390/microorganisms11061482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 05/29/2023] [Accepted: 05/29/2023] [Indexed: 06/29/2023] Open
Abstract
Peripartum antibiotics can negatively impact the developing gut microbiome and are associated with necrotizing enterocolitis (NEC). The mechanisms by which peripartum antibiotics increase the risk of NEC and strategies that can help mitigate this risk remain poorly understood. In this study, we determined mechanisms by which peripartum antibiotics increase neonatal gut injury and evaluated whether probiotics protect against gut injury potentiated by peripartum antibiotics. To accomplish this objective, we administered broad-spectrum antibiotics or sterile water to pregnant C57BL6 mice and induced neonatal gut injury to their pups with formula feeding. We found that pups exposed to antibiotics had reduced villus height, crypt depth, and intestinal olfactomedin 4 and proliferating cell nuclear antigen compared to the controls, indicating that peripartum antibiotics impaired intestinal proliferation. When formula feeding was used to induce NEC-like injury, more severe intestinal injury and apoptosis were observed in the pups exposed to antibiotics compared to the controls. Supplementation with the probiotic Lactobacillus rhamnosus GG (LGG) reduced the severity of formula-induced gut injury potentiated by antibiotics. Increased intestinal proliferating cell nuclear antigen and activation of the Gpr81-Wnt pathway were noted in the pups supplemented with LGG, suggesting partial restoration of intestinal proliferation by probiotics. We conclude that peripartum antibiotics potentiate neonatal gut injury by inhibiting intestinal proliferation. LGG supplementation decreases gut injury by activating the Gpr81-Wnt pathway and restoring intestinal proliferation impaired by peripartum antibiotics. Our results suggest that postnatal probiotics may be effective in mitigating the increased risk of NEC associated with peripartum antibiotic exposure in preterm infants.
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Affiliation(s)
- Alain Cuna
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, MO 64108, USA
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
| | - Marianne Nsumu
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, MO 64108, USA
| | - Heather L Menden
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, MO 64108, USA
| | - Susana Chavez-Bueno
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
- Division of Infectious Diseases, Children's Mercy Kansas City, Kansas City, MO 64108, USA
| | - Venkatesh Sampath
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, MO 64108, USA
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
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13
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Tucker MH, Yu W, Menden HL, Xia S, Schreck CF, Gibson MI, Louiselle DA, Pastinen T, Raje N, Sampath V. IRF7 and UNC93B1 variants in an infant with recurrent herpes simplex virus infection. J Clin Invest 2023:154016. [PMID: 37097753 DOI: 10.1172/jci154016] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023] Open
Abstract
Neonatal herpes simplex virus (HSV) infection is a devastating disease with substantial morbidity and mortality. The genetic basis of susceptibility to HSV in neonates remains undefined. We investigated a male infant with neonatal skin/eye/mouth (SEM) HSV1 disease who had complete recovery after acyclovir but developed HSV1 encephalitis at 1 year of age. Immune work up showed an anergic peripheral blood monocyte cytokine (PBMC) response to TLR3 stimulation but no other TLRs. Exome sequencing identified rare missense variants in IRF7 and UNC93B1. PBMC single cell RNA sequencing done during childhood revealed decreased expression of several innate immune genes and a repressed TLR3 pathway signature at baseline in several immune cell populations, including CD14 monocytes. Functional studies in fibroblasts and THP-1 showed that both variants individually suppressed TLR3-driven IRF3 promoter activity and type I interferon response in vitro. Furthermore, fibroblasts expressing the IRF7 and UNC93B1 variants had higher intracellular viral titers with blunting of the type I interferon response upon HSV1 challenge. This study reports an infant with recurrent HSV1 disease complicated by encephalitis associated with deleterious variants in IRF7 and UNC93B1 genes. Our results suggest that TLR3 pathway mutations may predispose neonates to recurrent severe HSV.
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Affiliation(s)
- Megan H Tucker
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, United States of America
| | - Wei Yu
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, United States of America
| | - Heather L Menden
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, United States of America
| | - Sheng Xia
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, United States of America
| | - Carl F Schreck
- Department of Pediatrics, Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, United States of America
| | - Margaret I Gibson
- Department of Pediatrics, Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, United States of America
| | - Daniel A Louiselle
- Department of Pediatrics, Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, United States of America
| | - Tomi Pastinen
- Department of Pediatrics, Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, United States of America
| | - Nikita Raje
- Department of Pediatrics, Division of Allergy and Immunology, Children's Mercy Kansas City, Kansas City, United States of America
| | - Venkatesh Sampath
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, United States of America
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14
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Menden HL, Mabry SM, Venkatraman A, Xia S, DeFranco DB, Yu W, Sampath V. SARS-CoV-2 E protein induces Toll like receptor 2-mediated neonatal lung injury in a model of COVID-19 viremia that is rescued by the glucocorticoid ciclesonide. Am J Physiol Lung Cell Mol Physiol 2023; 324:L722-L736. [PMID: 36976925 DOI: 10.1152/ajplung.00410.2022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
Abstract
SARS-CoV-2 viremia is associated with increased acute lung injury (ALI) and mortality in children and adults. The mechanisms by which viral components in the circulation mediate ALI in COVID-19 remain unclear. We tested the hypothesis that the SARS-CoV-2 envelope (E) protein induces Toll like receptor (TLR) - mediated ALI and lung remodeling in a model of neonatal COVID-19. Neonatal C57BL6 mice given intraperitoneal E protein injections revealed a dose-dependent increase in lung cytokines (Il6, Tnfα, and Il1β) and canonical pro-inflammatory TLR signaling. Systemic E protein induced endothelial immune activation, immune cell influx, and TGFβ signaling and lung matrix remodeling inhibited alveolarization in the developing lung. E protein-mediated ALI and TGFβ signaling was repressed in Tlr2-/-, but not Tlr4-/- mice. A single does of E protein induced chronic alveolar remodeling as evidenced by decreased radial alveolar counts and mean linear intercepts. Ciclesonide, a synthetic glucocorticoid, inhibited E protein-induced pro-inflammatory TLR signaling and ALI. In vitro, E protein mediated inflammation and cell death was TLR2-dependent in human primary neonatal lung endothelial cells, and was rescued by ciclesonide. This study provides insight into the pathogenesis of ALI and alveolar remodeling with SARS-CoV-2 viremia in children, while revealing the efficacy of steroids.
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Affiliation(s)
- Heather L Menden
- Department of Pediatrics, Division of Neonatology, Children's Mercy, Kansas City, MO, United States
| | - Sherry M Mabry
- Department of Pediatrics, Division of Neonatology, Children's Mercy, Kansas City, MO, United States
| | - Aparna Venkatraman
- Department of Pediatrics, Division of Neonatology, Children's Mercy, Kansas City, MO, United States
| | - Sheng Xia
- Department of Pediatrics, Division of Neonatology, Children's Mercy, Kansas City, MO, United States
| | - Donald B DeFranco
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Wei Yu
- Department of Pediatrics, Division of Neonatology, Children's Mercy, Kansas City, MO, United States
| | - Venkatesh Sampath
- Department of Pediatrics, Division of Neonatology, Children's Mercy, Kansas City, MO, United States
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15
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Akangire G, Lachica C, Noel-MacDonnell J, Begley A, Sampath V, Truog W, Manimtim W. Outcomes of infants with severe bronchopulmonary dysplasia who received tracheostomy and home ventilation. Pediatr Pulmonol 2023; 58:753-762. [PMID: 36377273 DOI: 10.1002/ppul.26248] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 11/02/2022] [Accepted: 11/13/2022] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To describe the survival rate, timing of liberation from the ventilator, and factors favorable for decannulation among infants with severe bronchopulmonary dysplasia (sBPD) who received tracheostomy. METHODS Demographics and clinical outcomes were obtained through retrospective chart review of 98 infants with sBPD who were born between 2004 and 2017, received tracheostomy at <1 year of age, and were followed in the Infant Tracheostomy and Home Ventilator clinic up to 4 years of age. RESULTS The number of infants with sBPD who received tracheostomy increased significantly over the study period. The median age at tracheostomy was 4 months (IQR 3, 5) or 43 weeks corrected gestational age; the median age at NICU discharge was 7 months (IQR 6, 9). At 48 months of age, all subjects had been liberated from the ventilator, at a median age of 24 months (IQR 18, 29); 52% had been decannulated with a median age at decannulation of 32 months (IQR 26, 39). Only 1 (1%) infant died. Multivariate logistic regression showed infants who were White, liberated from the ventilator by 24 months of age and have public insurance had significantly greater odds of being decannulated by 48 months of age. Tracheobronchomalacia was associated with decreased odds of decannulation. CONCLUSION Infants with sBPD who received tracheostomy had an excellent survival rate. Liberation from home ventilation and decannulation are likely to occur by 4 years of age.
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Affiliation(s)
- Gangaram Akangire
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, Missouri, USA.,Department of Pediatrics, School of Medicine, University of Missouri Kansas City, Kansas City, Missouri, USA
| | - Charisse Lachica
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, Missouri, USA.,Department of Pediatrics, School of Medicine, University of Missouri Kansas City, Kansas City, Missouri, USA
| | - Janelle Noel-MacDonnell
- Department of Pediatrics, School of Medicine, University of Missouri Kansas City, Kansas City, Missouri, USA.,Department of Health Services and Outcomes Research, Children's Mercy Kansas City, Kansas City, Missouri, USA
| | - Addie Begley
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, Missouri, USA.,Department of Pediatrics, School of Medicine, University of Missouri Kansas City, Kansas City, Missouri, USA
| | - Venkatesh Sampath
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, Missouri, USA.,Department of Pediatrics, School of Medicine, University of Missouri Kansas City, Kansas City, Missouri, USA
| | - William Truog
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, Missouri, USA.,Department of Pediatrics, School of Medicine, University of Missouri Kansas City, Kansas City, Missouri, USA
| | - Winston Manimtim
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, Missouri, USA.,Department of Pediatrics, School of Medicine, University of Missouri Kansas City, Kansas City, Missouri, USA
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16
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Tucker MH, Yeh HW, Oh D, Shaw N, Kumar N, Sampath V. Preterm sepsis is associated with acute lung injury as measured by pulmonary severity score. Pediatr Res 2023; 93:1050-1056. [PMID: 35906303 DOI: 10.1038/s41390-022-02218-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 06/30/2022] [Accepted: 07/12/2022] [Indexed: 11/09/2022]
Abstract
BACKGROUND Sepsis related acute lung injury (ALI) is established in adults but has not been investigated in premature infants. Herein, we used pulmonary severity score (PSS) trajectories and C-reactive protein (CRP) to examine the relation between sepsis and ALI in premature infants. METHODS This retrospective study identified 211 sepsis and 123 rule out (RO) events in 443 infants born <31 weeks and <1500 grams. The PSS was calculated prior to, at the time of, and up to 1 week after each event. Initial and peak CRP values were collected for each event. RESULTS PSS significantly increased at 0 h from baseline (-72h) and remained increased at all subsequent time points (all p < 0.002) in sepsis events. Mean PSS in sepsis episodes were also higher compared to RO events at +24 h, +48 h, +72 h, and +168 h (all p < 0.004). A positive correlation was noted between peak CRP values in sepsis events and PSS at 0 h, +24 h, +48 h, and +72 h. CONCLUSIONS The temporal PSS trends and correlation with CRP levels observed in sepsis but not in RO events supports the hypothesis that neonatal sepsis is associated with ALI and contributes to the accumulating evidence that neonatal ARDS occurs. IMPACT To evaluate pulmonary severity scores and c-reactive protein values over time to establish an association between preterm neonatal sepsis and acute lung injury (ALI). Though sepsis is well established as the most common indirect cause of ALI leading to acute respiratory distress syndrome (ARDS) in adults and pediatrics, this phenomenon remains undefined in neonates. This study validates the proposal by the Neonatal ARDS Project that ARDS also occurs in neonates by demonstrating acute and sustained changes in markers of pulmonary injury temporally related to a diagnosis of neonatal sepsis in preterm infants.
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Affiliation(s)
- Megan Hudson Tucker
- Division of Neonatology, Children's Mercy Kansas City, University of Missouri-Kansas City, Kansas City, MO, USA.
| | - Hung-Wen Yeh
- Division of Health Services and Outcomes Research, Children's Mercy Kansas City, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Daniel Oh
- University of Missouri at Kansas City School of Medicine, Kansas City, MO, USA
| | - Nicole Shaw
- Division of Neonatology, Hurley Children's Hospital, Flint, MI, USA
| | - Navin Kumar
- Division of Neonatology, Hurley Children's Hospital, Flint, MI, USA
| | - Venkatesh Sampath
- Division of Neonatology, Children's Mercy Kansas City, University of Missouri-Kansas City, Kansas City, MO, USA
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17
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Sampath V, Martinez M, Caplan M, Underwood MA, Cuna A. Necrotizing enterocolitis in premature infants-A defect in the brakes? Evidence from clinical and animal studies. Mucosal Immunol 2023; 16:208-220. [PMID: 36804483 DOI: 10.1016/j.mucimm.2023.02.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/03/2023] [Accepted: 02/08/2023] [Indexed: 02/17/2023]
Abstract
A key aspect of postnatal intestinal adaptation is the establishment of symbiotic relationships with co-evolved gut microbiota. Necrotizing enterocolitis (NEC) is the most severe disease arising from failure in postnatal gut adaptation in premature infants. Although pathological activation of intestinal Toll-like receptors (TLRs) is believed to underpin NEC pathogenesis, the mechanisms are incompletely understood. We postulate that unregulated aberrant TLR activation in NEC arises from a failure in intestinal-specific mechanisms that tamponade TLR signaling (the brakes). In this review, we discussed the human and animal studies that elucidate the developmental mechanisms inhibiting TLR signaling in the postnatal intestine (establishing the brakes). We then evaluate evidence from preclinical models and human studies that point to a defect in the inhibition of TLR signaling underlying NEC. Finally, we provided a framework for the assessment of NEC risk by screening for signatures of TLR signaling and for NEC prevention by TLR-targeted therapy in premature infants.
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Affiliation(s)
- Venkatesh Sampath
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, Missouri, USA; School of Medicine, University of Missouri Kansas City, Kansas City, Missouri, USA.
| | - Maribel Martinez
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, Missouri, USA; School of Medicine, University of Missouri Kansas City, Kansas City, Missouri, USA
| | - Michael Caplan
- Department of Pediatrics, North Shore University Health System, Evanston, Illinois, USA
| | - Mark A Underwood
- Department of Pediatrics, University of California Davis, Sacramento, California, USA
| | - Alain Cuna
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, Missouri, USA; School of Medicine, University of Missouri Kansas City, Kansas City, Missouri, USA
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18
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Cuna A, Morowitz MJ, Sampath V. Early antibiotics and risk for necrotizing enterocolitis in premature infants: A narrative review. Front Pediatr 2023; 11:1112812. [PMID: 36865691 PMCID: PMC9971631 DOI: 10.3389/fped.2023.1112812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 01/24/2023] [Indexed: 02/16/2023] Open
Abstract
While prompt initiation of antibiotics at birth due to concerns for early onset sepsis is common, it often leads to many preterm infants being exposed to treatment despite negative blood cultures. Such exposure to early antibiotics can impact the developing gut microbiome putting infants at increased risk of several diseases. Necrotizing enterocolitis (NEC), a devastating inflammatory bowel disease that affects preterm infants, is among the most widely studied neonatal disease that has been linked to early antibiotics. While some studies have demonstrated an increased risk of NEC, other studies have demonstrated seemingly contrary findings of decreased NEC with early antibiotics. Studies using animal models have also yielded differing findings of benefit vs. harm of early antibiotic exposure on subsequent NEC susceptibility. We thus sought to conduct this narrative review to help clarify the relationship between early antibiotics exposure and future risk of NEC in preterm infants. Our objectives are to: (1) summarize findings from human and animal studies that investigated the relationship between early antibiotics and NEC, (2) highlight important limitations of these studies, (3) explore potential mechanisms that can explain why early antibiotics may increase or decrease NEC risk, and (4) identify future directions for research.
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Affiliation(s)
- Alain Cuna
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, MOUnited States
- School of Medicine, University of Missouri-Kansas City, Kansas City, MOUnited States
| | - Michael J. Morowitz
- Division of Pediatric General and Thoracic Surgery, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, PAUnited States
- School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Venkatesh Sampath
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, MOUnited States
- School of Medicine, University of Missouri-Kansas City, Kansas City, MOUnited States
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19
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Yusuf K, Sampath V, Umar S. Bacterial Infections and Cancer: Exploring This Association And Its Implications for Cancer Patients. Int J Mol Sci 2023; 24:3110. [PMID: 36834525 PMCID: PMC9958598 DOI: 10.3390/ijms24043110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 01/31/2023] [Accepted: 02/01/2023] [Indexed: 02/08/2023] Open
Abstract
Bacterial infections are common in the etiology of human diseases owing to the ubiquity of bacteria. Such infections promote the development of periodontal disease, bacterial pneumonia, typhoid, acute gastroenteritis, and diarrhea in susceptible hosts. These diseases may be resolved using antibiotics/antimicrobial therapy in some hosts. However, other hosts may be unable to eliminate the bacteria, allowing them to persist for long durations and significantly increasing the carrier's risk of developing cancer over time. Indeed, infectious pathogens are modifiable cancer risk factors, and through this comprehensive review, we highlight the complex relationship between bacterial infections and the development of several cancer types. For this review, searches were performed on the PubMed, Embase, and Web of Science databases encompassing the entirety of 2022. Based on our investigation, we found several critical associations, of which some are causative: Porphyromonas gingivalis and Fusobacterium nucleatum are associated with periodontal disease, Salmonella spp., Clostridium perfringens, Escherichia coli, Campylobacter spp., and Shigella are associated with gastroenteritis. Helicobacter pylori infection is implicated in the etiology of gastric cancer, and persistent Chlamydia infections present a risk factor for the development of cervical carcinoma, especially in patients with the human papillomavirus (HPV) coinfection. Salmonella typhi infections are linked with gallbladder cancer, and Chlamydia pneumoniae infection is implicated in lung cancer, etc. This knowledge helps identify the adaptation strategies used by bacteria to evade antibiotic/antimicrobial therapy. The article also sheds light on the role of antibiotics in cancer treatment, the consequences of their use, and strategies for limiting antibiotic resistance. Finally, the dual role of bacteria in cancer development as well as in cancer therapy is briefly discussed, as this is an area that may help to facilitate the development of novel microbe-based therapeutics as a means of securing improved outcomes.
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Affiliation(s)
- Kafayat Yusuf
- Department of Surgery, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Department of Cancer Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Venkatesh Sampath
- Department of Pediatrics and Gastroenterology, Children’s Mercy Hospital, Kansas City, KS 66160, USA
| | - Shahid Umar
- Department of Surgery, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Department of Cancer Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA
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20
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Xia S, Vila Ellis L, Winkley K, Menden H, Mabry SM, Venkatraman A, Louiselle D, Gibson M, Grundberg E, Chen J, Sampath V. Neonatal hyperoxia induces activated pulmonary cellular states and sex-dependent transcriptomic changes in a model of experimental bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2023; 324:L123-L140. [PMID: 36537711 PMCID: PMC9902224 DOI: 10.1152/ajplung.00252.2022] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 11/08/2022] [Accepted: 11/17/2022] [Indexed: 12/24/2022] Open
Abstract
Hyperoxia disrupts lung development in mice and causes bronchopulmonary dysplasia (BPD) in neonates. To investigate sex-dependent molecular and cellular programming involved in hyperoxia, we surveyed the mouse lung using single cell RNA sequencing (scRNA-seq), and validated our findings in human neonatal lung cells in vitro. Hyperoxia-induced inflammation in alveolar type (AT) 2 cells gave rise to damage-associated transient progenitors (DATPs). It also induced a new subpopulation of AT1 cells with reduced expression of growth factors normally secreted by AT1 cells, but increased mitochondrial gene expression. Female alveolar epithelial cells had less EMT and pulmonary fibrosis signaling in hyperoxia. In the endothelium, expansion of Car4+ EC (Cap2) was seen in hyperoxia along with an emergent subpopulation of Cap2 with repressed VEGF signaling. This regenerative response was increased in females exposed to hyperoxia. Mesenchymal cells had inflammatory signatures in hyperoxia, with a new distal interstitial fibroblast subcluster characterized by repressed lipid biosynthesis and a transcriptomic signature resembling myofibroblasts. Hyperoxia-induced gene expression signatures in human neonatal fibroblasts and alveolar epithelial cells in vitro resembled mouse scRNA-seq data. These findings suggest that neonatal exposure to hyperoxia programs distinct sex-specific stem cell progenitor and cellular reparative responses that underpin lung remodeling in BPD.
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Affiliation(s)
- Sheng Xia
- Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
| | - Lisandra Vila Ellis
- Department of Pulmonary Medicine, University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Konner Winkley
- Genomic Medicine Center, Children's Mercy Hospital, Kansas City, Missouri
| | - Heather Menden
- Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
| | - Sherry M Mabry
- Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
| | - Aparna Venkatraman
- Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
| | - Daniel Louiselle
- Genomic Medicine Center, Children's Mercy Hospital, Kansas City, Missouri
| | - Margaret Gibson
- Genomic Medicine Center, Children's Mercy Hospital, Kansas City, Missouri
| | - Elin Grundberg
- Genomic Medicine Center, Children's Mercy Hospital, Kansas City, Missouri
- Children's Mercy Research Institute, Kansas City, Missouri
| | - Jichao Chen
- Department of Pulmonary Medicine, University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Venkatesh Sampath
- Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
- Children's Mercy Research Institute, Kansas City, Missouri
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21
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Yu W, Venkatraman A, Menden HL, Martinez M, Umar S, Sampath V. Short-chain fatty acids ameliorate necrotizing enterocolitis-like intestinal injury through enhancing Notch1-mediated single immunoglobulin interleukin-1-related receptor, toll-interacting protein, and A20 induction. Am J Physiol Gastrointest Liver Physiol 2023; 324:G24-G37. [PMID: 36410023 PMCID: PMC9799135 DOI: 10.1152/ajpgi.00057.2022] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 11/15/2022] [Accepted: 11/15/2022] [Indexed: 11/23/2022]
Abstract
Single immunoglobulin interleukin-1-related receptor (SIGIRR), toll-interacting protein (TOLLIP), and A20 are major inhibitors of toll-like receptor (TLR) signaling induced postnatally in the neonatal intestine. Short-chain fatty acids (SCFAs), fermentation products of indigestible carbohydrates produced by symbiotic bacteria, inhibit intestinal inflammation. Herein, we investigated the mechanisms by which SCFAs regulate SIGIRR, A20, and TOLLIP expression and mitigate experimental necrotizing enterocolitis (NEC). Butyrate induced NOTCH activation by repressing sirtuin 1 (SIRT1)-mediated deacetylation of the Notch intracellular domain (NICD) in human intestinal epithelial cells (HIECs). Overexpression of NICD induced SIGIRR, A20, and TOLLIP expression. Chromatin immunoprecipitation revealed that butyrate-induced NICD binds to the SIGIRR, A20, and TOLLIP gene promoters. Notch1-shRNA suppressed butyrate-induced SIGIRR/A20 upregulation in mouse enteroids and HIEC. Flagellin (TLR5 agonist)-induced inflammation in HIEC was inhibited by butyrate in a SIGIRR-dependent manner. Neonatal mice fed butyrate had increased NICD, A20, SIGIRR, and TOLLIP expression in the ileal epithelium. Butyrate inhibited experimental NEC-induced intestinal apoptosis, cytokine expression, and histological injury. Our data suggest that SCFAs can regulate the expression of the major negative regulators of TLR signaling in the neonatal intestine through Notch1 and ameliorate experimental NEC. Enteral SCFAs supplementation in preterm infants provides a promising bacteria-free, therapeutic option for NEC.NEW & NOTEWORTHY Short-chain fatty acids (SCFAs), such as propionate and butyrate, metabolites produced by symbiotic gut bacteria are known to be anti-inflammatory, but the mechanisms by which they protect against NEC are not fully understood. In this study, we reveal that SCFAs regulate intestinal inflammation by inducing the key TLR and IL1R inhibitors, SIGIRR and A20, through activation of the pluripotent transcriptional factor NOTCH1. Butyrate-mediated SIGIRR and A20 induction represses experimental NEC in the neonatal intestine.
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MESH Headings
- Infant, Newborn
- Animals
- Mice
- Humans
- Enterocolitis, Necrotizing/drug therapy
- Enterocolitis, Necrotizing/prevention & control
- Enterocolitis, Necrotizing/genetics
- Receptors, Interleukin-1/genetics
- Receptors, Interleukin-1/metabolism
- Infant, Premature
- Inflammation/metabolism
- Intestinal Mucosa/metabolism
- Fatty Acids, Volatile/pharmacology
- Fatty Acids, Volatile/metabolism
- Butyrates/metabolism
- Immunoglobulins/metabolism
- Interleukin-1/metabolism
- Receptor, Notch1/metabolism
- Intracellular Signaling Peptides and Proteins/metabolism
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Affiliation(s)
- Wei Yu
- Division of Neonatology, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, Missouri
- Neonatal Diseases Research Program, Children's Mercy Research Institute, Children's Mercy Kansas City, Kansas City, Missouri
| | - Aparna Venkatraman
- Division of Neonatology, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, Missouri
- Neonatal Diseases Research Program, Children's Mercy Research Institute, Children's Mercy Kansas City, Kansas City, Missouri
| | - Heather L Menden
- Division of Neonatology, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, Missouri
- Neonatal Diseases Research Program, Children's Mercy Research Institute, Children's Mercy Kansas City, Kansas City, Missouri
| | - Maribel Martinez
- Division of Neonatology, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, Missouri
- Neonatal Diseases Research Program, Children's Mercy Research Institute, Children's Mercy Kansas City, Kansas City, Missouri
| | - Shahid Umar
- Department of Surgery, University of Kansas Medical Center, Kansas City, Kansas
| | - Venkatesh Sampath
- Division of Neonatology, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, Missouri
- Neonatal Diseases Research Program, Children's Mercy Research Institute, Children's Mercy Kansas City, Kansas City, Missouri
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22
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Aravamudhan R, Sampath V, Kannan R, Kumar P, Srinivasan V, Sridevi MM. Interleukin-17 Inhibitor in Treatment of Psoriasis during COVID-19 Pandemic: An Ambispective Study. J Clin Diagn Res 2023. [DOI: 10.7860/jcdr/2023/59172.17381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Introduction: Psoriasis is a genetically mediated chronic inflammatory disease that is frequently associated with metabolic co-morbidities. These metabolic co-morbidities have a huge impact in deciding the appropriate immunosupressant of choice in the current scenario of Coronavirus Disease (COVID19) pandemic. Treatment of psoriasis especially with biologicals is challenging during covid pandemic since immunosuppressive therapy might interfere with antiviral immunity. Aim: To report the safety profile of Interleukin-17 (IL-17) inhibitor, namely injection secukinumab in patients of psoriasis vulgaris during COVID-19 pandemic. Materials and Methods: An ambispective interventional study was performed on 23 patients of psoriasis who were administered secukinumab at a dose of 300 mg subcutaneously during COVID19 pandemic.The study was conducted at the Department of Dermatology, Madras Medical College, Chennai, Tamil Nadu, India among the patients attending the psoriasis clinic between the July 2021 to March 2022. The demographic characteristics of the study group, previous treatment for psoriasis and the relationship between risk of COVID-19 infection and secukinumab were noted. Efficacy of secukinumab was calculated using Psoriasis Area and Severity Index (PASI) scores. Statistical analysis was conducted with Statistical Package for Social Sciences (SPSS) statistics software version 21.0 by Fischer’s-exact test. Results: Out of 23 patients, 17 patients (11 males, six females) completed full course of nine doses (five weekly doses followed by four monthly doses) of secukinumab. The PASI 75 and PASI 90 were achieved in 9 (52.94%) and 8 (29.41%) patients respectively at the end of 12 weeks. None of the patients developed COVID-19 infection during the course of treatment and three months following therapy. Patients with psoriasis who had a history of COVID-19 infection did not show signs of reinfection when started on secukinumab. Both inactivated vaccine (Covaxin) and vector based vaccine (Covishield) were found to be safe in concomitant use with secukinumab. Conclusion: Secukinumab is found to be safe and effective in psoriasis treatment during COVID-19 pandemic. There is no increased risk of COVID-19 infection or reinfection, COVID-19 associated hospitalisation and mortality among patients with psoriasis administered with secukinumab. The drug can also be safely used with COVID-19 vaccines.
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23
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Ke X, Huang Y, Fu Q, Majnik A, Sampath V, Lane RH. Adverse maternal environment alters Oprl1 variant expression in mouse hippocampus. Anat Rec (Hoboken) 2023; 306:162-175. [PMID: 35983908 PMCID: PMC10087895 DOI: 10.1002/ar.25056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 07/20/2022] [Accepted: 07/29/2022] [Indexed: 01/29/2023]
Abstract
An adverse maternal environment (AME) and Western diet (WD) in early life predispose offspring toward cognitive impairment in humans and mice. Cognitive impairment associates with hippocampal dysfunction. An important regulator of hippocampal function is the hippocampal Nociceptin/Orphanin FQ (N/OFQ) system. Previous studies find links between dysregulation of hippocampal N/OFQ receptor (NOP) expression and impaired cognitive function. NOP is encoded by the opioid receptor-like 1 (Oprl1) gene that contains multiple mRNA variants and isoforms. Regulation of Oprl1 expression includes histone modifications within the promoter. We tested the hypothesis that an AME and a postweaning WD increase the expression of hippocampal Oprl1 and select variants concurrent with altered histone code in the promoter. We created an AME-WD model combining maternal WD and prenatal environmental stress plus postweaning WD in the mouse. We analyzed the hippocampal expression of Oprl1, Oprl1 variants, and histone modifications in the Oprl1 promoter in offspring at postnatal day (P) 21 and P100. An AME and an AME-WD significantly increased the total hippocampal expression of Oprl1 and variant V4 concurrently with an increased accumulation of active histone marks in the promoter of male offspring. We concluded that an AME and an AME-WD alter hippocampal Oprl1 expression in offspring through an epigenetic mechanism in a variant-specific and sex-specific manner. Altered hippocampal Oprl1 expression may contribute to cognitive impairment seen in adult males in this model. Epigenetic regulation of Oprl1 is a potential mechanism by which an AME and a WD may contribute to neurocognitive impairment in male offspring.
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Affiliation(s)
- Xingrao Ke
- Department of Research Administration, Children Mercy Research Institute, Children's Mercy Kansas City, Kansas City, Missouri, USA
| | - Yingliu Huang
- Department of Neurology, Hainan Provincial People's Hospital, Haikou, Hainan, China
| | - Qi Fu
- Department of Research Administration, Children Mercy Research Institute, Children's Mercy Kansas City, Kansas City, Missouri, USA
| | - Amber Majnik
- Division of Neonatology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Venkatesh Sampath
- Department of Research Administration, Children Mercy Research Institute, Children's Mercy Kansas City, Kansas City, Missouri, USA.,Division of Neonatology, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, Missouri, USA
| | - Robert H Lane
- Department of Research Administration, Children Mercy Research Institute, Children's Mercy Kansas City, Kansas City, Missouri, USA
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24
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Rao K, Cuna A, Chavez-Bueno S, Menden H, Yu W, Ahmed I, Srinivasan P, Umar S, Sampath V. Effect of Various Preterm Infant Milk Formulas on NEC-Like Gut Injury in Mice. Front Pediatr 2022; 10:902798. [PMID: 35874567 PMCID: PMC9299064 DOI: 10.3389/fped.2022.902798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 06/10/2022] [Indexed: 11/13/2022] Open
Abstract
Formula feeding is an important risk factor for the development of necrotizing enterocolitis in preterm infants. The potential harmful effects of different preterm formulas on the developing intestinal tract remain incompletely understood. Here we demonstrate that feeding newborn mouse pups with various preterm formulas resulted in differing effects on intestinal inflammation, apoptosis, and activation of the pro-inflammatory transcription factor NFκB. 16S rRNA sequencing revealed that each preterm formula resulted in significant gut microbial alterations that were different from dam-fed controls. Formula feeding with EleCare and Similac Special Care caused greater intestinal injury compared to NeoSure. Pre-treatment with Lactobacillus rhamnosus GG ameliorated severity of intestinal injury from EleCare and Similac Special Care. Our findings indicate that not all preterm formulas are the same, and different formulations can have varying effects on intestinal inflammation, apoptosis, and microbiome composition.
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Affiliation(s)
- Karishma Rao
- Division of Neonatology, Children’s Mercy Hospital, Kansas City, MO, United States
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO, United States
| | - Alain Cuna
- Division of Neonatology, Children’s Mercy Hospital, Kansas City, MO, United States
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO, United States
| | - Susana Chavez-Bueno
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO, United States
- Division of Infectious Disease, Children’s Mercy Hospital, Kansas City, MO, United States
| | - Heather Menden
- Division of Neonatology, Children’s Mercy Hospital, Kansas City, MO, United States
| | - Wei Yu
- Division of Neonatology, Children’s Mercy Hospital, Kansas City, MO, United States
| | - Ishfaq Ahmed
- Department of Biology, Kansas City Kansas Community College, Kansas City, KS, United States
| | - Pugazhendhi Srinivasan
- Department of Urology, University of Kansas Medical Center, Kansas City, KS, United States
| | - Shahid Umar
- Department of Surgery, University of Kansas Medical Center, Kansas City, KS, United States
| | - Venkatesh Sampath
- Division of Neonatology, Children’s Mercy Hospital, Kansas City, MO, United States
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO, United States
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25
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Cohen ASA, Farrow EG, Abdelmoity AT, Alaimo JT, Amudhavalli SM, Anderson JT, Bansal L, Bartik L, Baybayan P, Belden B, Berrios CD, Biswell RL, Buczkowicz P, Buske O, Chakraborty S, Cheung WA, Coffman KA, Cooper AM, Cross LA, Curran T, Dang TTT, Elfrink MM, Engleman KL, Fecske ED, Fieser C, Fitzgerald K, Fleming EA, Gadea RN, Gannon JL, Gelineau-Morel RN, Gibson M, Goldstein J, Grundberg E, Halpin K, Harvey BS, Heese BA, Hein W, Herd SM, Hughes SS, Ilyas M, Jacobson J, Jenkins JL, Jiang S, Johnston JJ, Keeler K, Korlach J, Kussmann J, Lambert C, Lawson C, Le Pichon JB, Leeder JS, Little VC, Louiselle DA, Lypka M, McDonald BD, Miller N, Modrcin A, Nair A, Neal SH, Oermann CM, Pacicca DM, Pawar K, Posey NL, Price N, Puckett LMB, Quezada JF, Raje N, Rowell WJ, Rush ET, Sampath V, Saunders CJ, Schwager C, Schwend RM, Shaffer E, Smail C, Soden S, Strenk ME, Sullivan BR, Sweeney BR, Tam-Williams JB, Walter AM, Welsh H, Wenger AM, Willig LK, Yan Y, Younger ST, Zhou D, Zion TN, Thiffault I, Pastinen T. Genomic answers for children: Dynamic analyses of >1000 pediatric rare disease genomes. Genet Med 2022; 24:1336-1348. [PMID: 35305867 DOI: 10.1016/j.gim.2022.02.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 02/05/2022] [Accepted: 02/07/2022] [Indexed: 12/17/2022] Open
Abstract
PURPOSE This study aimed to provide comprehensive diagnostic and candidate analyses in a pediatric rare disease cohort through the Genomic Answers for Kids program. METHODS Extensive analyses of 960 families with suspected genetic disorders included short-read exome sequencing and short-read genome sequencing (srGS); PacBio HiFi long-read genome sequencing (HiFi-GS); variant calling for single nucleotide variants (SNV), structural variant (SV), and repeat variants; and machine-learning variant prioritization. Structured phenotypes, prioritized variants, and pedigrees were stored in PhenoTips database, with data sharing through controlled access the database of Genotypes and Phenotypes. RESULTS Diagnostic rates ranged from 11% in patients with prior negative genetic testing to 34.5% in naive patients. Incorporating SVs from genome sequencing added up to 13% of new diagnoses in previously unsolved cases. HiFi-GS yielded increased discovery rate with >4-fold more rare coding SVs compared with srGS. Variants and genes of unknown significance remain the most common finding (58% of nondiagnostic cases). CONCLUSION Computational prioritization is efficient for diagnostic SNVs. Thorough identification of non-SNVs remains challenging and is partly mitigated using HiFi-GS sequencing. Importantly, community research is supported by sharing real-time data to accelerate gene validation and by providing HiFi variant (SNV/SV) resources from >1000 human alleles to facilitate implementation of new sequencing platforms for rare disease diagnoses.
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Affiliation(s)
- Ana S A Cohen
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO; Department of Pathology and Laboratory Medicine, Children's Mercy Kansas City, Kansas City, MO; UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO
| | - Emily G Farrow
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO; UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO; Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | | | - Joseph T Alaimo
- Department of Pathology and Laboratory Medicine, Children's Mercy Kansas City, Kansas City, MO; UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO
| | - Shivarajan M Amudhavalli
- UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO; Division of Genetics, Children's Mercy Kansas City, Kansas City, MO
| | - John T Anderson
- Department of Orthopaedic Surgery, Children's Mercy Kansas City, Kansas City, MO
| | - Lalit Bansal
- Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Lauren Bartik
- UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO; Division of Genetics, Children's Mercy Kansas City, Kansas City, MO
| | | | - Bradley Belden
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO
| | | | - Rebecca L Biswell
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO
| | | | | | | | - Warren A Cheung
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO
| | - Keith A Coffman
- Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Ashley M Cooper
- Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Laura A Cross
- Division of Genetics, Children's Mercy Kansas City, Kansas City, MO
| | - Tom Curran
- Children's Mercy Research Institute, Kansas City, MO
| | - Thuy Tien T Dang
- Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Mary M Elfrink
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO
| | | | - Erin D Fecske
- Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Cynthia Fieser
- Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Keely Fitzgerald
- Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Emily A Fleming
- Division of Genetics, Children's Mercy Kansas City, Kansas City, MO
| | - Randi N Gadea
- Division of Genetics, Children's Mercy Kansas City, Kansas City, MO
| | | | - Rose N Gelineau-Morel
- UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO; Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Margaret Gibson
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO
| | - Jeffrey Goldstein
- Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Elin Grundberg
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO
| | - Kelsee Halpin
- UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO; Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Brian S Harvey
- Department of Orthopaedic Surgery, Children's Mercy Kansas City, Kansas City, MO
| | - Bryce A Heese
- Division of Genetics, Children's Mercy Kansas City, Kansas City, MO
| | - Wendy Hein
- Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Suzanne M Herd
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO
| | - Susan S Hughes
- Division of Genetics, Children's Mercy Kansas City, Kansas City, MO
| | - Mohammed Ilyas
- UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO; Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Jill Jacobson
- UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO; Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Janda L Jenkins
- Division of Genetics, Children's Mercy Kansas City, Kansas City, MO
| | | | | | - Kathryn Keeler
- Department of Orthopaedic Surgery, Children's Mercy Kansas City, Kansas City, MO
| | - Jonas Korlach
- Pacific Biosciences of California, Inc, Menlo Park, CA
| | | | | | - Caitlin Lawson
- Division of Genetics, Children's Mercy Kansas City, Kansas City, MO
| | | | | | - Vicki C Little
- Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | | | | | | | - Neil Miller
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO; UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO; Division of Allergy Immunology Pulmonary and Sleep Medicine, Children's Mercy Kansas City, Kansas City, MO
| | - Ann Modrcin
- Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Annapoorna Nair
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO
| | - Shelby H Neal
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO
| | | | - Donna M Pacicca
- Department of Orthopaedic Surgery, Children's Mercy Kansas City, Kansas City, MO
| | - Kailash Pawar
- Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Nyshele L Posey
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO
| | - Nigel Price
- Department of Orthopaedic Surgery, Children's Mercy Kansas City, Kansas City, MO
| | - Laura M B Puckett
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO
| | - Julio F Quezada
- UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO; Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Nikita Raje
- UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO; Division of Neonatology, Children's Mercy Kansas City, Kansas City, MO
| | | | - Eric T Rush
- UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO; Division of Genetics, Children's Mercy Kansas City, Kansas City, MO; Department of Internal Medicine, University of Kansas School of Medicine, Kansas City, MO
| | - Venkatesh Sampath
- Division of Neonatology, Children's Mercy Hospital Kansas City, Kansas City, MO
| | - Carol J Saunders
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO; Department of Pathology and Laboratory Medicine, Children's Mercy Kansas City, Kansas City, MO; UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO
| | - Caitlin Schwager
- Division of Genetics, Children's Mercy Kansas City, Kansas City, MO
| | - Richard M Schwend
- Department of Orthopaedic Surgery, Children's Mercy Kansas City, Kansas City, MO
| | - Elizabeth Shaffer
- Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Craig Smail
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO
| | - Sarah Soden
- Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Meghan E Strenk
- Division of Genetics, Children's Mercy Kansas City, Kansas City, MO
| | | | - Brooke R Sweeney
- UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO; Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | | | - Adam M Walter
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO
| | - Holly Welsh
- Division of Genetics, Children's Mercy Kansas City, Kansas City, MO
| | | | - Laurel K Willig
- Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Yun Yan
- UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO; Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO
| | - Scott T Younger
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO
| | - Dihong Zhou
- Division of Genetics, Children's Mercy Kansas City, Kansas City, MO
| | - Tricia N Zion
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO; UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO; Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO; Division of Genetics, Children's Mercy Kansas City, Kansas City, MO
| | - Isabelle Thiffault
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO; Department of Pathology and Laboratory Medicine, Children's Mercy Kansas City, Kansas City, MO; UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO.
| | - Tomi Pastinen
- Genomic Medicine Center, Children's Mercy Kansas City, Kansas City, MO; UKMC School of Medicine, University of Missouri Kansas City, Kansas City, MO; Children's Mercy Research Institute, Kansas City, MO.
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26
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Khashu M, Dame C, Lavoie PM, De Plaen IG, Garg PM, Sampath V, Malhotra A, Caplan MD, Kumar P, Agrawal PB, Buonocore G, Christensen RD, Maheshwari A. Current Understanding of Transfusion-associated Necrotizing Enterocolitis: Review of Clinical and Experimental Studies and a Call for More Definitive Evidence. Newborn 2022; 1:201-208. [PMID: 35746957 PMCID: PMC9217573 DOI: 10.5005/jp-journals-11002-0005] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
| | | | - Pascal M Lavoie
- University of British Columbia, Vancouver, British Columbia, Canada
| | | | - Parvesh M Garg
- University of Mississippi, Jackson, Mississippi, United States of America
| | - Venkatesh Sampath
- University of Missouri–Kansas City, Kansas, United States of America
| | | | - Michael D Caplan
- University of Chicago, Chicago, Illinois, United States of America
| | - Praveen Kumar
- Postgraduate Institute of Medical Education and Research, Chandigarh, Punjab, India
| | - Pankaj B Agrawal
- Boston Children’s Hospital, Harvard University, Boston, Massachusetts, United States of America
| | | | | | - Akhil Maheshwari
- Global Newborn Society, Baltimore, Maryland, United States of America
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27
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Akangire G, Menden H, Xia S, Thiffault I, Ahmed A, Sampath V. EPHB4 Mutation Suppresses PROX1 Expression and Disrupts Lymphatic Development in Neonatal Hydrops. Pediatrics 2022; 149:184852. [PMID: 35178555 DOI: 10.1542/peds.2021-053294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/29/2021] [Indexed: 11/24/2022] Open
Abstract
This case report highlights the importance of screening for mutations in EPHB4 and other genes that regulate lymphatic development in infants with the nonimmune hydrops fetalis.
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Affiliation(s)
- Gangaram Akangire
- Division of Neonatology.,University of Missouri Kansas City-Kansas City, Kansas City, Missouri
| | | | | | - Isabelle Thiffault
- Center for Genomic Medicine.,Department of Pathology and Laboratory Medicine.,University of Missouri Kansas City-Kansas City, Kansas City, Missouri
| | - Atif Ahmed
- Department of Pathology, Children's Mercy Hospital
| | - Venkatesh Sampath
- Division of Neonatology.,University of Missouri Kansas City-Kansas City, Kansas City, Missouri
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28
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Sampath V, Park JH, Ha BD, Han K, Kim IH. Evaluation of Lactobacillus Plantarum Additive on Growth Performance, Excreta Microbiota, Nutrient Digestibility, Gas Emission, and Meat Quality in Ross308-Broilers. Braz J Poult Sci 2022. [DOI: 10.1590/1806-9061-2021-1551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- V Sampath
- Dankook University, Republic of Korea
| | - JH Park
- Microsolution Co., Ltd, Republic of Korea
| | - BD Ha
- Microsolution Co., Ltd, Republic of Korea
| | - K Han
- Dankook University, Republic of Korea; Dankook University, Republic of Korea
| | - IH Kim
- Dankook University, Republic of Korea
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29
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Ramesh A, Sampath V, Kannan R, Daniel SJ, Kumar LBA, Deepavarshini P. Lobular Capillary Haemangioma Occurring Over Port-Wine Stain in a Patient of Sturge-Weber Syndrome: A Case Report. Indian J Dermatol 2022; 67:481. [PMID: 36578767 PMCID: PMC9792022 DOI: 10.4103/ijd.ijd_78_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- A. Ramesh
- From the Department of DVL, Madras Medical College, Chennai, Tamil Nadu, India E-mail:
| | - V. Sampath
- From the Department of DVL, Madras Medical College, Chennai, Tamil Nadu, India E-mail:
| | - Rajkumar Kannan
- From the Department of DVL, Madras Medical College, Chennai, Tamil Nadu, India E-mail:
| | - Samuel J. Daniel
- From the Department of DVL, Madras Medical College, Chennai, Tamil Nadu, India E-mail:
| | - L. B. Ajith Kumar
- From the Department of DVL, Madras Medical College, Chennai, Tamil Nadu, India E-mail:
| | - P. Deepavarshini
- From the Department of DVL, Madras Medical College, Chennai, Tamil Nadu, India E-mail:
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30
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Ahmed I, Yusuf K, Roy BC, Stubbs J, Anant S, Attard TM, Sampath V, Umar S. Dietary Interventions Ameliorate Infectious Colitis by Restoring the Microbiome and Promoting Stem Cell Proliferation in Mice. Int J Mol Sci 2021; 23:339. [PMID: 35008767 PMCID: PMC8745185 DOI: 10.3390/ijms23010339] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/21/2021] [Accepted: 12/25/2021] [Indexed: 12/15/2022] Open
Abstract
Decreases in short-chain-fatty-acids (SCFAs) are linked to inflammatory bowel disease (IBD). Yet, the mechanisms through which SCFAs promote wound healing, orchestrated by intestinal stem cells, are poorly understood. We discovered that, in mice with Citrobacter rodentium (CR)-induced infectious colitis, treatment with Pectin and Tributyrin diets reduced the severity of colitis by restoring Firmicutes and Bacteroidetes and by increasing mucus production. RNA-seq in young adult mouse colon (YAMC) cells identified higher expression of Lgr4, Lgr6, DCLK1, Muc2, and SIGGIR after Butyrate treatment. Lineage tracing in CR-infected Lgr5-EGFP-IRES-CreERT2/ROSA26-LacZ (Lgr5-R) mice also revealed an expansion of LacZ-labeled Lgr5(+) stem cells in the colons of both Pectin and Tributyrin-treated mice compared to control. Interestingly, gut microbiota was required for Pectin but not Tributyrin-induced Lgr5(+) stem cell expansion. YAMC cells treated with sodium butyrate exhibited increased Lgr5 promoter reporter activity due to direct Butyrate binding with Lgr5 at -4.0 Kcal/mol, leading to thermal stabilization. Upon ChIP-seq, H3K4me3 increased near Lgr5 transcription start site that contained the consensus binding motif for a transcriptional activator of Lgr5 (SPIB). Thus, a multitude of effects on gut microbiome, differential gene expression, and/or expansion of Lgr5(+) stem cells seem to underlie amelioration of colitis following dietary intervention.
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Affiliation(s)
- Ishfaq Ahmed
- Department of Surgery, University of Kansas Medical Center, Kansas City, KS 66160, USA; (I.A.); (K.Y.); (B.C.R.)
| | - Kafayat Yusuf
- Department of Surgery, University of Kansas Medical Center, Kansas City, KS 66160, USA; (I.A.); (K.Y.); (B.C.R.)
| | - Badal C. Roy
- Department of Surgery, University of Kansas Medical Center, Kansas City, KS 66160, USA; (I.A.); (K.Y.); (B.C.R.)
| | - Jason Stubbs
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA;
| | - Shrikant Anant
- Cancer Biology Department, University of Kansas Medical Center, Kansas City, KS 66160, USA;
| | - Thomas M. Attard
- Department of Pediatrics and Gastroenterology, Children’s Mercy Hospital, Kansas City, KS 66160, USA; (T.M.A.); (V.S.)
| | - Venkatesh Sampath
- Department of Pediatrics and Gastroenterology, Children’s Mercy Hospital, Kansas City, KS 66160, USA; (T.M.A.); (V.S.)
| | - Shahid Umar
- Department of Surgery, University of Kansas Medical Center, Kansas City, KS 66160, USA; (I.A.); (K.Y.); (B.C.R.)
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Salimi U, Dummula K, Tucker MH, Dela Cruz CS, Sampath V. Postnatal Sepsis and Bronchopulmonary Dysplasia in Premature Infants: Mechanistic Insights into "New BPD". Am J Respir Cell Mol Biol 2021; 66:137-145. [PMID: 34644520 DOI: 10.1165/rcmb.2021-0353ps] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a debilitating disease in premature infants resulting from lung injury that disrupts alveolar and pulmonary vascular development. Despite the use of lung-protective ventilation and targeted oxygen therapy, BPD rates have not significantly changed over the last decade. Recent evidence suggests that sepsis and conditions initiating the systemic inflammatory response syndrome in preterm infants are key risk factors for BPD. However, the mechanisms by which sepsis-associated systemic inflammation and microbial dissemination program aberrant lung development are not fully understood. Progress has been made within the last 5 years with the inception of animal models allowing mechanistic investigations into neonatal acute lung injury and alveolar remodeling due to endotoxemia and NEC. These recent studies begin to unravel the pathophysiology of early endothelial immune activation via pattern recognition receptors such as Toll Like Receptor 4 and disruption of critical lung developmental processes such as angiogenesis, extracellular matrix deposition, and ultimately alveologenesis. Here we review scientific evidence from preclinical models of neonatal sepsis-induced lung injury to new data emerging from clinical literature.
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Affiliation(s)
- Umar Salimi
- Yale University, 5755, Pediatrics, New Haven, Connecticut, United States
| | - Krishna Dummula
- Children's Mercy, 4204, Pediatrics, Kansas City, Missouri, United States
| | - Megan H Tucker
- Children's Mercy, 4204, Pediatrics, Kansas City, Missouri, United States
| | - Charles S Dela Cruz
- Yale University, Pulmonary and Critical Care Medicine, New Haven, Connecticut, United States
| | - Venkatesh Sampath
- Children\'s Mercy Hospitals and Clinics, 4204, Pediatrics, Kansas City, Missouri, United States;
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Balu SK, Sampath V, Andra S, Alagar S, Manisha Vidyavathy S. Fabrication of carbon and silver nanomaterials incorporated hydroxyapatite nanocomposites: Enhanced biological and mechanical performances for biomedical applications. Mater Sci Eng C Mater Biol Appl 2021; 128:112296. [PMID: 34474847 DOI: 10.1016/j.msec.2021.112296] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 06/14/2021] [Accepted: 06/30/2021] [Indexed: 10/20/2022]
Abstract
Hydroxyapatite is widely utilized for different biomedical applications because of its outstanding biocompatibility and bioactivity. Cuttlefish bones, which are available aplenty, are both inexpensive and eco-friendly sources for calcium carbonate. In the present study, cuttlefish bones-derived HAp nanorods have been utilized to fabricate HAp nanocomposites incorporating 1, 3 and 5 wt% each of GO, MWCNTs, GONRs and Ag NPs. Characterization using such techniques as XRD, FTIR, HRSEM and EDS was performed to analyze the physicochemical properties of nanocomposites, and MTT assay, hemolysis, bioactivity and drug release to evaluate the biological properties. The XRD and HRSEM results reveal that crystallite and particle size increase with increasing wt% of carbon nanomaterials and Ag NPs. However, the addition of nanomaterials did not modify the shape of HAp. The MTT assay and hemolysis results suggest GONRs possess better biocompatibility than GO and CNTs due to their smooth edge structure. While adding carbon materials up to 3 wt% caused an increase in the hardness, adding up to 5 wt% of them caused a decrease in the hardness due to the agglomeration of the particles. Biocompatibility and Vicker's hardness studies show that adding carbon nanomaterials up to 3 wt% caused significant improvement in biocompatibility and mechanical properties. Antibacterial activity test was performed to analyze the ability to preclude the formation of biofilms. The results showed better activity for silver-incorporated nanocomposites in the presence of E. coli and S. aureus bacteria. Drug release studies were performed using lidocaine drug and the results showed nearly similar drug release profile for all the samples except HAg3. Finally, nanocomposite HRA3 could be a suitable candidate for biomedical applications since it shows better biological and mechanical properties than GO and MWCNTs nanocomposites.
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Affiliation(s)
- Satheesh Kumar Balu
- Department of Ceramic Technology, Anna University, Chennai, Tamil Nadu 600025, India
| | - V Sampath
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu 600036, India
| | - Swetha Andra
- Center for Nanoscience and Technology, Chennai Institute of Technology, Chennai, Tamil Nadu 600069, India
| | - Srinivasan Alagar
- Institute of Nanoscience and Technology, Sector-81, Knowledge City, Sahibzada Ajit Singh Nagar, Punjab 140306, India
| | - S Manisha Vidyavathy
- Department of Ceramic Technology, Anna University, Chennai, Tamil Nadu 600025, India.
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Kavitha R, Nirmala S, Sampath V, Shanmugavalli V, Latha B. Studies of synthesis, crystal structure and antidiabetic activity of quinolinium 2-carboxylate 2-chloroacetic acid. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Sampath V, Ramchandran R. The Yin and the Yang of Transformative Research During the COVID-19 Pandemic-A Perspective. Front Pediatr 2021; 9:650302. [PMID: 34249804 PMCID: PMC8264183 DOI: 10.3389/fped.2021.650302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 05/10/2021] [Indexed: 12/05/2022] Open
Abstract
The COVID-19 pandemic has highlighted the necessity for scientists from diverse disciplines to collaboratively mitigate the singular calamity facing humanity this century. The ability of researchers to combine exponential advances in technology and scientific acumen has resulted in landmark discoveries in pediatric research and is surmounting the COVID-19 challenge. Several of these discoveries exist in a realm of research that is not classically "basic" or "clinical." Translational research characterizes this domain partially, but does not fully capture the integrated research approaches that have spurred these discoveries. Herein, we share our perspective on the common themes underpinning the basic and clinical research. We also highlight major differences in the scope, emphasis, approach, and limitations of basic and clinical research that impede multi-disciplinary approaches that facilitate truly transformative research. These differences in research thinking and methodology are ingrained during training wherein the limitations of the chosen discipline, and strengths of alternate disciplines are not adequately explored. Insular approaches are particularly limited in impacting complex diseases pathophysiology in the era of precision medicine. We propose that integration of -omics technologies, systems biology, adaptive clinical trial designs, humanized animal models, and precision pre-clinical model systems must be incorporated into research training of future scientists. Several initiatives from the NIH and other institutions are facilitating such broad-based "research without frontiers" training that paves the way for seamless, multi-disciplinary, research. Such efforts become "transformative" when scientific challenges are tackled in partnership with a willingness to share ideas, tackle challenges, and develop tools/models from the very beginning.
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Affiliation(s)
- Venkatesh Sampath
- Division of Neonatology, Children's Mercy Kansas City, Kansas City, MO, United States
- Department of Pediatrics, University of Missouri at Kansas City, Kansas City, MO, United States
| | - Ramani Ramchandran
- Department of Pediatrics, Division of Neonatology, Medical College of Wisconsin, Milwaukee, WI, United States
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Jaumotte JD, Franks AL, Bargerstock EM, Kisanga EP, Menden HL, Ghersi A, Omar M, Wang L, Rudine A, Short KL, Silswal N, Cole TJ, Sampath V, Monaghan-Nichols AP, DeFranco DB. Ciclesonide activates glucocorticoid signaling in neonatal rat lung but does not trigger adverse effects in the cortex and cerebellum. Neurobiol Dis 2021; 156:105422. [PMID: 34126164 DOI: 10.1016/j.nbd.2021.105422] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 05/28/2021] [Accepted: 06/08/2021] [Indexed: 11/15/2022] Open
Abstract
Synthetic glucocorticoids (sGCs) such as dexamethasone (DEX), while used to mitigate inflammation and disease progression in premature infants with severe bronchopulmonary dysplasia (BPD), are also associated with significant adverse neurologic effects such as reductions in myelination and abnormalities in neuroanatomical development. Ciclesonide (CIC) is a sGC prodrug approved for asthma treatment that exhibits limited systemic side effects. Carboxylesterases enriched in the lower airways convert CIC to the glucocorticoid receptor (GR) agonist des-CIC. We therefore examined whether CIC would likewise activate GR in neonatal lung but have limited adverse extra-pulmonary effects, particularly in the developing brain. Neonatal rats were administered subcutaneous injections of CIC, DEX or vehicle from postnatal days 1-5 (PND1-PND5). Systemic effects linked to DEX exposure, including reduced body and brain weight, were not observed in CIC treated neonates. Furthermore, CIC did not trigger the long-lasting reduction in myelin basic protein expression in the cerebral cortex nor cerebellar size caused by neonatal DEX exposure. Conversely, DEX and CIC were both effective at inducing the expression of select GR target genes in neonatal lung, including those implicated in lung-protective and anti-inflammatory effects. Thus, CIC is a promising, novel candidate drug to treat or prevent BPD in neonates given its activation of GR in neonatal lung and limited adverse neurodevelopmental effects. Furthermore, since sGCs such as DEX administered to pregnant women in pre-term labor can adversely affect fetal brain development, the neurological-sparing properties of CIC, make it an attractive alternative for DEX to treat pregnant women severely ill with respiratory illness, such as with asthma exacerbations or COVID-19 infections.
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Affiliation(s)
- Juliann D Jaumotte
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Pittsburgh Institute of Neurodegenerative Disease (PIND), University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Alexis L Franks
- Department of Pediatrics, Division of Child Neurology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Erin M Bargerstock
- Department of Pediatrics, Division of Newborn Medicine, UPMC Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Edwina Philip Kisanga
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Pittsburgh Institute of Neurodegenerative Disease (PIND), University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Heather L Menden
- Department of Pediatrics, Division of Neonatology, Children's Mercy Kansas City, University of Missouri Kansas City School of Medicine, Kansas City, MO, USA
| | - Alexis Ghersi
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Pittsburgh Institute of Neurodegenerative Disease (PIND), University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Mahmoud Omar
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Pittsburgh Institute of Neurodegenerative Disease (PIND), University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Liping Wang
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Pittsburgh Institute of Neurodegenerative Disease (PIND), University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Anthony Rudine
- Department of Neonatology, St. David's Medical Center, Austin, TX, USA
| | - Kelly L Short
- Department of Biochemistry & Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Neerupama Silswal
- Department of Biomedical Sciences, University of Missouri Kansas City School of Medicine, Kansas City, MO, USA
| | - Timothy J Cole
- Department of Biochemistry & Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Venkatesh Sampath
- Department of Pediatrics, Division of Neonatology, Children's Mercy Kansas City, University of Missouri Kansas City School of Medicine, Kansas City, MO, USA
| | - A Paula Monaghan-Nichols
- Department of Biomedical Sciences, University of Missouri Kansas City School of Medicine, Kansas City, MO, USA
| | - Donald B DeFranco
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Pittsburgh Institute of Neurodegenerative Disease (PIND), University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
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Xia S, Yu W, Menden H, Younger ST, Sampath V. FOXC2 Autoregulates Its Expression in the Pulmonary Endothelium After Endotoxin Stimulation in a Histone Acetylation-Dependent Manner. Front Cell Dev Biol 2021; 9:657662. [PMID: 34017833 PMCID: PMC8129010 DOI: 10.3389/fcell.2021.657662] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 04/12/2021] [Indexed: 12/26/2022] Open
Abstract
The innate immune response of pulmonary endothelial cells (EC) to lipopolysaccharide (LPS) induces Forkhead box protein C2 (FOXC2) activation through Toll Like Receptor 4 (TLR4). The mechanisms by which FOXC2 expression is regulated in lung EC under LPS stimulation remain unclear. We postulated that FOXC2 regulates its own expression in sepsis, and its transcriptional autoregulation directs lymphatic EC cell-fate decision. Bioinformatic analysis identified potential FOXC2 binding sites in the FOXC2 promoter. In human lung EC, we verified using chromatin immunoprecipitation (ChIP) and luciferase assays that FOXC2 bound to its own promoter and stimulated its expression after LPS stimulation. Chemical inhibition of histone acetylation by garcinol repressed LPS-induced histone acetylation in the FOXC2 promoter region, and disrupted LPS-mediated FOXC2 binding and transcriptional activation. CRISPR/dCas9/gRNA directed against FOXC2-binding-element (FBE) suppressed LPS-stimulated FOXC2 binding and autoregulation by blocking FBEs in the FOXC2 promoter, and repressed expression of lymphatic EC markers. In a neonatal mouse model of sterile sepsis, LPS-induced FOXC2 binding to FBE and FOXC2 expression in lung EC was attenuated with garcinol treatment. These data reveal a new mechanism of LPS-induced histone acetylation-dependent FOXC2 autoregulation.
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Affiliation(s)
- Sheng Xia
- Department of Pediatrics, Children's Mercy Kansas City, MO, United States
| | - Wei Yu
- Department of Pediatrics, Children's Mercy Kansas City, MO, United States
| | - Heather Menden
- Department of Pediatrics, Children's Mercy Kansas City, MO, United States
| | - Scott T Younger
- Center for Pediatric Genomic Medicine, Children's Mercy Kansas City, MO, United States
| | - Venkatesh Sampath
- Department of Pediatrics, Children's Mercy Kansas City, MO, United States
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Xia S, Menden HL, Townley N, Mabry SM, Johnston J, Nyp MF, Heruth DP, Korfhagen T, Sampath V. Delta-like 4 is required for pulmonary vascular arborization and alveolarization in the developing lung. JCI Insight 2021; 6:134170. [PMID: 33830085 PMCID: PMC8119184 DOI: 10.1172/jci.insight.134170] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 02/25/2021] [Indexed: 11/23/2022] Open
Abstract
The molecular mechanisms by which endothelial cells (ECs) regulate pulmonary vascularization and contribute to alveolar epithelial cell development during lung morphogenesis remain unknown. We tested the hypothesis that delta-like 4 (DLL4), an EC Notch ligand, is critical for alveolarization by combining lung mapping and functional studies in human tissue and DLL4-haploinsufficient mice (Dll4+/lacz). DLL4 expressed in a PECAM-restricted manner in capillaries, arteries, and the alveolar septum from the canalicular to alveolar stage in mice and humans. Dll4 haploinsufficiency resulted in exuberant, nondirectional vascular patterning at E17.5 and P6, followed by smaller capillaries and fewer intermediate blood vessels at P14. Vascular defects coincided with polarization of lung EC expression toward JAG1-NICD-HES1 signature and decreased tip cell-like (Car4) markers. Dll4+/lacZ mice had impaired terminal bronchiole development at the canalicular stage and impaired alveolarization upon lung maturity. We discovered that alveolar type I cell (Aqp5) markers progressively decreased in Dll4+/lacZ mice after birth. Moreover, in human lung EC, DLL4 deficiency programmed a hypersprouting angiogenic phenotype cell autonomously. In conclusion, DLL4 is expressed from the canalicular to alveolar stage in mice and humans, and Dll4 haploinsufficiency programs dysmorphic microvascularization, impairing alveolarization. Our study reveals an obligate role for DLL4-regulated angiogenesis in distal lung morphogenesis.
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Affiliation(s)
- Sheng Xia
- Division of Neonatology, Department of Pediatrics, Children’s Mercy Hospital, Kansas City, Missouri, USA
| | - Heather L. Menden
- Division of Neonatology, Department of Pediatrics, Children’s Mercy Hospital, Kansas City, Missouri, USA
| | - Nick Townley
- Division of Neonatology, Department of Pediatrics, Children’s Mercy Hospital, Kansas City, Missouri, USA
| | - Sherry M. Mabry
- Division of Neonatology, Department of Pediatrics, Children’s Mercy Hospital, Kansas City, Missouri, USA
| | - Jeffrey Johnston
- Genomic Medicine Center, Children’s Mercy Hospital, Kansas City, Missouri, USA
| | - Michael F. Nyp
- Division of Neonatology, Department of Pediatrics, Children’s Mercy Hospital, Kansas City, Missouri, USA
| | - Daniel P. Heruth
- Division of Neonatology, Department of Pediatrics, Children’s Mercy Hospital, Kansas City, Missouri, USA
| | - Thomas Korfhagen
- Division of Neonatology, Department of Pediatrics, Cincinnati Children’s Hospital, Cincinnati, Ohio, USA
| | - Venkatesh Sampath
- Division of Neonatology, Department of Pediatrics, Children’s Mercy Hospital, Kansas City, Missouri, USA
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Kumar N, Rocha FG, Moustafa ASZ, Masten M, Bruder A, Parmar K, Adekola H, Sampath V, Monga R. Impact of opioid maintenance treatment during pregnancy on neonatal birth weight and head circumference. J Neonatal Perinatal Med 2021; 14:475-484. [PMID: 33843703 DOI: 10.3233/npm-200645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Pregnant mothers with opioid dependency commonly receive maintenance treatment of opioid (OMT), either as buprenorphine (BMT) or methadone maintenance treatment (MMT). We investigated, whether OMT adversely affects standardized neonatal anthropometric outcomes and whether BMT is potentially safer than MMT in this regard. METHODS Retrospective chart review of mother infant dyad, with and without OMT. Infant's absolute and standardized (z-score) anthropometric outcomes at birth were first compared, between OMT and control group (negative meconium drug screen), and then between BMT and MMT group. These outcomes were also compared between infants who did or did not require treatment after birth for neonatal abstinence syndrome (NAS). RESULT A total of 1479 participants with MDS were included [Control = 1251; OMT = 228 (MMT = 181; BMT = 47)]. Both the z-scores of birth weight (BW) and head circumference (HC) was lower in OMT group (p < 0.001). Among the OMT group, GA at delivery was slightly higher in the BMT group (p = 0.05). There was an inverse correlation between maternal dose at the time of delivery and anthropometric z-scores in the BMT group, mainly in female infants (BW: p = 0.006; HC: p = 0.003). Furthermore, In BMT group, infants with lower HC were more likely to require treatment for NAS (p = 0.01). CONCLUSION HC and BW when comparing Z-scores were not different between MMT and BMT. High maternal dosing of buprenorphine is associated with lower BW and HC Z-scores but dose effect is not seen with methadone. In addition, there seems to be an association between NAS severity and HC, especially in the BMT group.
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Affiliation(s)
- N Kumar
- Division of Neonatology, Hurley Medical Center, Flint, MI, USA
| | - F G Rocha
- Division of Maternal-Fetal Medicine, University of California, San Francisco, CA, USA
| | - A S Z Moustafa
- Department of Obstetrics and Gynecology, Hurley Medical Center, Flint, MI, USA
| | - M Masten
- Department of Obstetrics and Gynecology, Hurley Medical Center, Flint, MI, USA
| | - A Bruder
- Department of Pediatrics, Hurley Medical Center, Flint, MI, USA
| | - K Parmar
- Department of Pediatrics, Hurley Medical Center, Flint, MI, USA
| | - H Adekola
- Division of Maternal-Fetal Medicine, Southern Illinois University, Springfield, IL, USA
| | - V Sampath
- Division of Neonatology, Children's Mercy Hospital, Kansas City, MO, USA
| | - R Monga
- Division of Neonatology, Hurley Medical Center, Flint, MI, USA
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Abstract
Advances in metagenomics have allowed a detailed study of the gut microbiome, and its role in human health and disease. Infants born prematurely possess a fragile gut microbial ecosystem that is vulnerable to perturbation. Alterations in the developing gut microbiome in preterm infants are linked to life-threatening diseases such as necrotizing enterocolitis (NEC) and late-onset sepsis; and may impact future risk of asthma, atopy, obesity, and psychosocial disease. In this mini-review, we summarize recent literature on the origins and patterns of development of the preterm gut microbiome in the perinatal period. The host-microbiome-environmental factors that portend development of dysbiotic intestinal microbial patterns associated with NEC and sepsis are reviewed. Strategies to manipulate the microbiome and mitigate dysbiosis, including the use of probiotics and prebiotics will also be discussed. Finally, we explore the challenges and future directions of gut microbiome research in preterm infants.
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Affiliation(s)
- Alain Cuna
- 1Division of Neonatology, Children’s Mercy Kansas City, Kansas City, Missouri,2School of Medicine, University of Missouri Kansas City, Kansas City, Missouri
| | | | - Ishfaq Ahmed
- 4Department of Math, Science and Business Technology, Kansas City Kansas Community College, Kansas City, Kansas
| | - Shahid Umar
- 5Departments of Surgery and Cancer Biology, University of Kansas Medical Center, Kansas City, Kansas
| | - Venkatesh Sampath
- 1Division of Neonatology, Children’s Mercy Kansas City, Kansas City, Missouri,2School of Medicine, University of Missouri Kansas City, Kansas City, Missouri
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Venkatraman A, Yu W, Nitkin C, Sampath V. Intestinal Stem Cell Development in the Neonatal Gut: Pathways Regulating Development and Relevance to Necrotizing Enterocolitis. Cells 2021; 10:cells10020312. [PMID: 33546361 PMCID: PMC7913590 DOI: 10.3390/cells10020312] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/21/2021] [Accepted: 01/29/2021] [Indexed: 12/15/2022] Open
Abstract
The intestine is extremely dynamic and the epithelial cells that line the intestine get replaced every 3–5 days by highly proliferative intestinal stem cells (ISCs). The instructions for ISCs to self-renew or to differentiate come as cues from their surrounding microenvironment or their niche. A small number of evolutionarily conserved signaling pathways act as a critical regulator of the stem cells in the adult intestine, and these pathways are well characterized. However, the mechanisms, nutritional, and environmental signals that help establish the stem cell niche in the neonatal intestine are less studied. Deciphering the key signaling pathways that regulate the development and maintenance of the stem cells is particularly important to understanding how the intestine regenerates from necrotizing enterocolitis, a devastating disease in newborn infants characterized by inflammation, tissues necrosis, and stem cell injury. In this review, we piece together current knowledge on morphogenetic and immune pathways that regulate intestinal stem cell in neonates and highlight how the cross talk among these pathways affect tissue regeneration. We further discuss how these key pathways are perturbed in NEC and review the scientific knowledge relating to options for stem cell therapy in NEC gleaned from pre-clinical experimental models of NEC.
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Abstract
Necrotizing enterocolitis (NEC) is a serious disease of the intestinal tract affecting 5-10% of pre-term infants with up to 50% mortality in those that require surgery. There is wide variation in the rates and outcomes of NEC by race and ethnicity, and the reasons for this disparity are poorly understood. In this article, we review the epidemiology and discuss possible explanations for racial and ethnic differences in NEC. Most of the current evidence investigating the role of race in NEC comes from North America and suggests that Hispanic ethnicity and non-Hispanic Black race are associated with higher risk of NEC compared to non-Hispanic White populations. Differences in pre-term births, breastfeeding rates, and various sociodemographic factors does not fully account for the observed disparities in NEC incidence and outcomes. While genetic studies are beginning to identify candidate genes that may increase or decrease risk for NEC among racial populations, current data remain limited by small sample sizes and lack of validation. Complex interactions between social and biological determinants likely underly the differences in NEC outcomes among racial groups. Larger datasets with detailed social, phenotypic, and genotypic information, coupled with advanced bioinformatics techniques are needed to comprehensively understand racial disparities in NEC.
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Affiliation(s)
- Alain Cuna
- School of Medicine, University of Missouri Kansas City, Kansas City, MO, United States.,Division of Neonatology, Children's Mercy Kansas City, Kansas City, MO, United States
| | - Venkatesh Sampath
- School of Medicine, University of Missouri Kansas City, Kansas City, MO, United States.,Division of Neonatology, Children's Mercy Kansas City, Kansas City, MO, United States
| | - Minesh Khashu
- Neonatal Service, University Hospitals Dorset, Poole, United Kingdom.,Bournemouth University, Dorset, United Kingdom
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Cummings L, Tucker M, Gibson M, Myers A, Pastinen T, Johnston J, Farrow E, Sampath V. Rare Genetic Variants in Immune Genes and Neonatal Herpes Simplex Viral Infections. Pediatrics 2021; 147:peds.2020-0687. [PMID: 33386334 DOI: 10.1542/peds.2020-0687] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/01/2020] [Indexed: 11/24/2022] Open
Abstract
Neonatal herpes simplex virus (HSV) infection is a devastating disease with high mortality, particularly when disseminated. Studies in adults and children suggest that susceptibility to herpes simplex encephalitis (HSE) may represent phenotypes for inborn errors in toll-like receptor 3 (TLR3) signaling. However, the genetic basis of susceptibility to neonatal HSV including disseminated disease remains unknown. To test the hypothesis that variants in known HSE-susceptible genes as well as genes mediating HSV immunity will be identified in neonatal HSV, we performed an unbiased exome sequencing study in 10 newborns with disseminated, HSE, and skin, eyes, and mouth disease. Determination of potential impact on function was determined by following American College of Medical Genetics and Genomics guidelines. We identified deleterious and potentially deleterious, rare variants in known HSE-related genes including a stop IRF3 variant (disseminated), nonsynonymous variants in TLR3 and TRAF3 (HSE), STAT1 (skin, eyes, and mouth), and DBR1 (disseminated) in our cohort. Novel and rare variants in other immunodeficiency genes or HSV-related immune genes GRB2, RAG2, PRF1, C6, C7, and MSR1 were found in 4 infants. The variant in GRB2, essential for T-lymphocyte cell responses to HSV, is a novel stop variant not found in public databases. In this pilot study, we identified deleterious or potentially deleterious variants in TLR3 pathway and genes that regulate anti-HSV immunity in neonates with HSV including disseminated disease. Larger, definitive studies incorporating functional analysis of genetic variants are required to validate these data and determine the role of immune genetic variants in neonatal HSV susceptibility.
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Affiliation(s)
| | | | - Margaret Gibson
- Center for Pediatric Genomic Medicine, Children's Mercy Hospital, Kansas City, Missouri
| | | | - Tomi Pastinen
- Center for Pediatric Genomic Medicine, Children's Mercy Hospital, Kansas City, Missouri
| | - Jeffrey Johnston
- Center for Pediatric Genomic Medicine, Children's Mercy Hospital, Kansas City, Missouri
| | - Emily Farrow
- Center for Pediatric Genomic Medicine, Children's Mercy Hospital, Kansas City, Missouri
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Sampath V, Koo DH, Lim CB, Kim IH. Supplemental Effect of Lactobacillus Plantarum on the Growth Performance, Nutrient Digestibility, Gas Emission, Excreta Microbiota, and Meat Quality in Broilers. Braz J Poult Sci 2021. [DOI: 10.1590/1806-9061-2021-1514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - DH Koo
- Dankook University, South Korea
| | - CB Lim
- Dankook University, South Korea
| | - IH Kim
- Dankook University, South Korea
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Kumar N, Kumar P, Harris N, Monga R, Sampath V. Impact of Maternal HbA1c Levels ≤6% and Race in Nondiabetic Pregnancies on Birthweight and Early Neonatal Hypoglycemia. J Pediatr 2020; 227:121-127.e3. [PMID: 32800816 DOI: 10.1016/j.jpeds.2020.08.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 06/25/2020] [Accepted: 08/10/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To evaluate whether pregnancy glycated hemoglobin (HbA1c) levels of ≤6% and maternal race impacts neonatal hypoglycemia and birthweight, and whether diabetes and beta blocker use during pregnancy additively impacts neonatal outcomes. STUDY DESIGN Retrospective chart review of 4769 infants born at ≥34 weeks; 21 482 glucose measurements were assessed. Predefined groups were infants born to mothers without documented pregnancy conditions (group N), prenatal exposure of beta blockers (group B), diabetes (group D), or both (group DB). RESULTS In group N, both in Caucasian (Caucasian, n = 1756; β = 2.6, P < .001) and African American (n = 1872; β = 2.2, P = .002) race, there was a direct relationship between pregnancy HbA1c levels and birthweight. HbA1c (aOR 1.8; 95% CI [1.3-2.5]) levels, maternal race, prematurity, cesarean delivery, and birth weight predicted hypoglycemia. Each 0.1% increase in HbA1c levels between 4.8 and 6 increased the odds of neonatal hypoglycemia by 6.4% in African American (β 0.62, SE 0.22, P = .01) and by 12.0% in Caucasian (β 1.13, SE 0.23 P < .001) population. The odds of neonatal hypoglycemia were 1.7 (group B), 2.1 (group D), and 3.1 (group DB) times higher compared with group N. CONCLUSIONS Pregnancy HbA1c levels between 4.8% and 6.0% considered acceptable during pregnancy impacts neonatal hypoglycemia and birthweight especially in Caucasian race. A third trimester HbA1c >5.2 is a potential risk factor for neonatal hypoglycemia, especially in preterm infants. Although we report new findings on the relationship between maternal HbA1c levels and neonatal outcomes, a prospective study is required to validate our findings and determine "optimal" HbA1C levels during pregnancy.
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Affiliation(s)
- Navin Kumar
- Division of Neonatology, Hurley Children's Hospital, Flint, MI.
| | - Parkash Kumar
- Department of Public Health, University of Michigan, Flint, MI
| | - Nathalee Harris
- Division of Neonatology, Hurley Children's Hospital, Flint, MI
| | - Ranjan Monga
- Division of Neonatology, Hurley Children's Hospital, Flint, MI
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45
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Cuna A, Yu W, Menden H, Feng L, Srinivasan P, Chavez-Bueno S, Ahmed I, Umar S, Sampath V. NEC-like intestinal injury is ameliorated by Lactobacillus rhamnosus GG in parallel with SIGIRR and A20 induction in neonatal mice. Pediatr Res 2020; 88:546-555. [PMID: 32053825 PMCID: PMC8213439 DOI: 10.1038/s41390-020-0797-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/13/2020] [Accepted: 01/24/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Exaggerated Toll-like receptor (TLR) signaling and intestinal dysbiosis are key contributors to necrotizing enterocolitis (NEC). Lactobacillus rhamnosus GG (LGG) decreases NEC in preterm infants, but underlying mechanisms of protection remain poorly understood. We hypothesized that LGG alleviates dysbiosis and upregulates TLR inhibitors to protect against TLR-mediated gut injury. METHODS Effects of LGG (low- and high-dose) on intestinal pro-inflammatory TLR signaling and injury in neonatal mice subjected to formula feeding (FF) and NEC were determined. 16S sequencing of stool and expression of anti-TLR mediators SIGIRR (single immunoglobulin interleukin-1-related receptor) and A20 were analyzed. RESULTS FF induced mild intestinal injury with increased expression of interleukin-1β (IL-1β) and Kupffer cell (KC) (mouse homolog of IL-8) compared to controls. LGG decreased IL-1β and KC in association with attenuated TLR signaling and increased SIGIRR and A20 expression in a dose-dependent manner. Low- and high-dose LGG had varying effects on gut microbiome despite both doses providing gut protection. Subsequent experiments of LGG on NEC revealed that pro-inflammatory TLR signaling and intestinal injury were also decreased, and SIGIRR and A20 expression increased, in a dose-dependent manner with LGG pre-treatment. CONCLUSIONS LGG protects against intestinal TLR-mediated injury by upregulating TLR inhibitors without major changes in gut microbiome composition.
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Affiliation(s)
- Alain Cuna
- University of Missouri-Kansas City, Kansas City MO,Children’s Mercy Kansas City, Kansas City MO
| | - Wei Yu
- Children’s Mercy Kansas City, Kansas City MO
| | | | - Linda Feng
- Children’s Mercy Kansas City, Kansas City MO
| | | | - Susana Chavez-Bueno
- University of Missouri-Kansas City, Kansas City MO,Children’s Mercy Kansas City, Kansas City MO
| | - Ishfaq Ahmed
- University of Kansas Medical Center, Kansas City KS
| | - Shahid Umar
- University of Kansas Medical Center, Kansas City KS
| | - Venkatesh Sampath
- University of Missouri-Kansas City, Kansas City, MO, USA. .,Children's Mercy Kansas City, Kansas City, MO, USA.
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46
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Nitkin CR, Xia S, Menden H, Yu W, Xiong M, Heruth DP, Ye SQ, Sampath V. FOSL1 is a novel mediator of endotoxin/lipopolysaccharide-induced pulmonary angiogenic signaling. Sci Rep 2020; 10:13143. [PMID: 32753701 PMCID: PMC7403357 DOI: 10.1038/s41598-020-69735-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 07/16/2020] [Indexed: 01/03/2023] Open
Abstract
Systemic sepsis is a known risk factor for bronchopulmonary dysplasia (BPD) in premature infants, a disease characterized by dysregulated angiogenesis and impaired vascular and alveolar development. We have previoulsy reported that systemic endotoxin dysregulates pulmonary angiogenesis resulting in alveolar simplification mimicking BPD in neonatal mice, but the underlying mechanisms remain unclear. We undertook an unbiased discovery approach to identify novel signaling pathways programming sepsis-induced deviant lung angiogenesis. Pulmonary endothelial cells (EC) were isolated for RNA-Seq from newborn C57BL/6 mice treated with intraperitoneal lipopolysaccharide (LPS) to mimic systemic sepsis. LPS significantly differentially-regulated 269 genes after 6 h, and 1,934 genes after 24 h. Using bioinformatics, we linked 6 h genes previously unknown to be modulated by LPS to 24 h genes known to regulate angiogenesis/vasculogenesis to identify pathways programming deviant angiogenesis. An immortalized primary human lung EC (HPMEC-im) line was generated by SV40 transduction to facilitate mechanistic studies. RT-PCR and transcription factor binding analysis identified FOSL1 (FOS like 1) as a transcriptional regulator of LPS-induced downstream angiogenic or vasculogenic genes. Over-expression and silencing studies of FOSL1 in immortalized and primary HPMEC demonstrated that baseline and LPS-induced expression of ADAM8, CXCR2, HPX, LRG1, PROK2, and RNF213 was regulated by FOSL1. FOSL1 silencing impaired LPS-induced in vitro HPMEC angiogenesis. In conclusion, we identified FOSL1 as a novel regulator of sepsis-induced deviant angiogenic signaling in mouse lung EC and human fetal HPMEC.
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Affiliation(s)
- Christopher R Nitkin
- Division of Neonatology, Children's Mercy Kansas City, 2401 Gillham Road, Kansas City, MO, 64108, USA.
| | - Sheng Xia
- Division of Neonatology, Children's Mercy Kansas City, 2401 Gillham Road, Kansas City, MO, 64108, USA
| | - Heather Menden
- Division of Neonatology, Children's Mercy Kansas City, 2401 Gillham Road, Kansas City, MO, 64108, USA
| | - Wei Yu
- Division of Neonatology, Children's Mercy Kansas City, 2401 Gillham Road, Kansas City, MO, 64108, USA
| | - Min Xiong
- Division of Experimental and Translational Genetics, Children's Mercy Kansas City, Kansas City, MO, 64108, USA.,Unaffiliated, Kansas City, USA
| | - Daniel P Heruth
- Division of Experimental and Translational Genetics, Children's Mercy Kansas City, Kansas City, MO, 64108, USA
| | - Shui Qing Ye
- Division of Neonatology, Children's Mercy Kansas City, 2401 Gillham Road, Kansas City, MO, 64108, USA
| | - Venkatesh Sampath
- Division of Neonatology, Children's Mercy Kansas City, 2401 Gillham Road, Kansas City, MO, 64108, USA
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Abstract
One of the many challenges with necrotizing enterocolitis (NEC) remains our inability to make an accurate diagnosis of NEC. The lack of a unifying cause and multiple variations in presentations lead to great uncertainty with NEC. Separating out the needs of the researcher wanting to define NEC from the clinician and patient family's perspectives who want an accurate diagnosis for NEC is important. The need to augment and/or replace the outdated modified Bell staging criteria is crucial to improving NEC management. Emerging literature suggests that genetic susceptibility and stool microbiota signatures may help identify preterm infants at increased risk of the disease. Ongoing studies using single or multi-omic approaches may help to characterize biomarkers that will aid in the prediction or early diagnosis of NEC, as well as differentiate other causes of severe bowel injury. Bowel ultrasound shows promise in improving our diagnostic accuracy for NEC but has been slow in adoption. Patient family perspectives are key in accelerating our efforts to integrate newer diagnostic methods into practice.
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Affiliation(s)
- Jae H Kim
- Division of Neonatology, Perinatal Institute, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
| | - Venkatesh Sampath
- Division of Neonatology, Department of Pediatrics, Children's Mercy Hospital, Children's Mercy Research Institute, Kansas City, MO, USA
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48
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Paul AA, Hoffman KL, Hagan JL, Sampath V, Petrosino JF, Pammi M. Fungal cutaneous microbiome and host determinants in preterm and term neonates. Pediatr Res 2020; 88:225-233. [PMID: 31816621 DOI: 10.1038/s41390-019-0719-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/22/2019] [Accepted: 11/26/2019] [Indexed: 12/18/2022]
Abstract
BACKGROUND The neonatal cutaneous mycobiome has not been characterized in preterm infants. Invasive fungal infections in preterm neonates are associated with high mortality. The immaturity of the preterm skin predisposes neonates to invasive infection by skin colonizers. We report the clinical and host determinants that influence the skin mycobiome. METHODS Skin swabs from the antecubital fossa, forehead, and gluteal region of 15 preterm and 15 term neonates were obtained during the first 5 weeks of life. The mycobiome was sequenced using the conserved pan-fungal ITS2 region. Blood samples were used to genotype immune modulating genes. Clinical metadata was collected to determine the clinical predictors of the abundance and diversity of the skin mycobiome. RESULTS The neonatal mycobiome is characterized by few taxa. Alpha diversity of the mycobiome is influenced by antibiotic exposure, the forehead body site, and the neonatal intensive care unit (NICU) environment. Beta diversity varies with mode of delivery, diet, and body site. The host determinants of the cutaneous microbiome include single-nucleotide polymorphisms in TLR4, NLRP3,CARD8, and NOD2. CONCLUSION The neonatal cutaneous mycobiome is composed of few genera and is influenced by clinical factors and host genetics, the understanding of which will inform preventive strategies against invasive fungal infections.
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Affiliation(s)
- Anshu A Paul
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Kristi L Hoffman
- Alkek Center for Microbiome and Metagenomics Research, Baylor College of Medicine, Houston, TX, USA
| | - Joseph L Hagan
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Venkatesh Sampath
- Department of Pediatrics, Section: Neonatology, Children's Mercy Hospital, University of Missouri, Kansas City, MO, USA
| | - Joseph F Petrosino
- Alkek Center for Microbiome and Metagenomics Research, Baylor College of Medicine, Houston, TX, USA
| | - Mohan Pammi
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA.
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Nitkin CR, Rajasingh J, Pisano C, Besner GE, Thébaud B, Sampath V. Stem cell therapy for preventing neonatal diseases in the 21st century: Current understanding and challenges. Pediatr Res 2020; 87:265-276. [PMID: 31086355 PMCID: PMC6854309 DOI: 10.1038/s41390-019-0425-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 04/24/2019] [Indexed: 02/06/2023]
Abstract
Diseases of the preterm newborn such as bronchopulmonary dysplasia, necrotizing enterocolitis, cerebral palsy, and hypoxic-ischemic encephalopathy continue to be major causes of infant mortality and long-term morbidity. Effective therapies for the prevention or treatment for these conditions are still lacking as recent clinical trials have shown modest or no benefit. Stem cell therapy is rapidly emerging as a novel therapeutic tool for several neonatal diseases with encouraging pre-clinical results that hold promise for clinical translation. However, there are a number of unanswered questions and facets to the development of stem cell therapy as a clinical intervention. There is much work to be done to fully elucidate the mechanisms by which stem cell therapy is effective (e.g., anti-inflammatory versus pro-angiogenic), identifying important paracrine mediators, and determining the timing and type of therapy (e.g., cellular versus secretomes), as well as patient characteristics that are ideal. Importantly, the interaction between stem cell therapy and current, standard-of-care interventions is nearly completely unknown. In this review, we will focus predominantly on the use of mesenchymal stromal cells for neonatal diseases, highlighting the promises and challenges in clinical translation towards preventing neonatal diseases in the 21st century.
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Affiliation(s)
- Christopher R Nitkin
- Division of Neonatology, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO, USA
| | - Johnson Rajasingh
- Department of Cardiovascular Medicine, Cardiovascular Research Institute, University of Kansas Medical Center, Kansas City, MO, USA
| | - Courtney Pisano
- Department of Pediatric Surgery, Center for Perinatal Research, Nationwide Children's Hospital, Columbus, OH, USA
| | - Gail E Besner
- Department of Pediatric Surgery, Center for Perinatal Research, Nationwide Children's Hospital, Columbus, OH, USA
| | - Bernard Thébaud
- Division of Neonatology, Department of Pediatrics, Children's Hospital of Eastern Ontario (CHEO) and CHEO Research Institute, Ottawa, ON, Canada
- Ottawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, ON, Canada
| | - Venkatesh Sampath
- Division of Neonatology, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO, USA.
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50
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Ahmed I, Roy BC, Rao Jakkula LUM, Subramaniam D, Dandawate P, Anant S, Sampath V, Umar S. Infection-induced signals generated at the plasma membrane epigenetically regulate Wnt signaling in vitro and in vivo. J Biol Chem 2019; 295:1021-1035. [PMID: 31836665 DOI: 10.1074/jbc.ra119.010285] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 12/05/2019] [Indexed: 12/14/2022] Open
Abstract
Wnt signaling regulates immunomodulatory functions during infection and inflammation. Employing NCCIT and HCT116 cells, having high endogenous Wnt signaling, we observed elevated levels of low-density lipoprotein receptor-related protein 5/6 (LRP5/6) and Frizzled class receptor 10 (FZD10) and increases in β-catenin, doublecortin-like kinase 1 (DCLK1), CD44 molecule (CD44), and aldehyde dehydrogenase 1 family member A1 (ALDH1A1). siRNA-induced knockdown of these receptors antagonized TOPflash reporter activity and spheroid growth in vitro and elevated Wnt-inhibitory factor 1 (WIF1) activity. Elevated mRNA and protein levels of LRP5/6 and FZD10 paralleled expression of WNT2b and WNT4 in colonic crypts at days 6 and 12 post-infection with Citrobacter rodentium (CR) and tended to decline at days 20-34. The CR mutant escV or the tankyrase inhibitor XAV939 attenuated these responses. A three-dimensional organoid assay in colonic crypts isolated from CR-infected mice revealed elevated levels of LRP5/6 and FZD10 and β-catenin co-localization with enhancer of zeste 2 polycomb repressive complex 2 subunit (EZH2). Co-immunoprecipitation in the membrane fraction revealed that axin associates with LRP5/6 in CR-infected crypts, and this association was correlated with increased β-catenin. Colon tumors from either CR-infected ApcP Min/+ or azoxymethane/dextran sodium sulfate (AOM/DSS)-treated mice had high LRP5/6 or FZD10 levels, and chronic Notch blockade through the γ-secretase inhibitor dibenzazepine down-regulated LRP5/6 and FZD10 expression. In CR-responsive CT-26 cells, siRNA-induced LRP5/6 or FZD10 knockdown antagonized TOPflash reporter activity. Elevated miR-153-3p levels correlated with LRP5/6 and FZD10, and miR-153-3p sequestration via a plasmid-based miR inhibitor system attenuated Wnt signaling. We conclude that infection-induced signals from the plasma membrane epigenetically regulate Wnt signaling.
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Affiliation(s)
- Ishfaq Ahmed
- Department of Surgery, University of Kansas Medical Center, Kansas City, Kansas 66160
| | - Badal Chandra Roy
- Department of Surgery, University of Kansas Medical Center, Kansas City, Kansas 66160
| | | | | | - Prasad Dandawate
- Department of Cancer Biology, University of Kansas Medical Center, Kansas City, Kansas 66160
| | - Shrikant Anant
- Department of Cancer Biology, University of Kansas Medical Center, Kansas City, Kansas 66160
| | - Venkatesh Sampath
- Division of Neonatology, Children's Mercy Hospital, Kansas City, Missouri 64108
| | - Shahid Umar
- Department of Surgery, University of Kansas Medical Center, Kansas City, Kansas 66160
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