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Johnson JN, Pouraliakbar H, Mahdavi M, Ranjbar A, Pfirman K, Mehra V, Ahmed S, Ba-Atiyah W, Galal MO, Zahr RA, Hussain N, Tadikamalla RR, Farah V, Dzelebdzic S, Muniz JC, Lee M, Williams J, Lee S, Aggarwal SK, Clark DE, Hughes SG, Ganigara M, Nagiub M, Hussain T, Kwok C, Lim HS, Nolan M, Kikuchi DS, Goulbourne CA, Sahu A, Sievers B, Sievers B, Sievers B, Garg R, Armas CR, Paleru V, Agarwal R, Rajagopal R, Bhagirath P, Kozor R, Aneja A, Tunks R, Chen SSM. Society for Cardiovascular Magnetic Resonance 2022 Cases of SCMR case series. J Cardiovasc Magn Reson 2023; 26:100007. [PMID: 38211509 DOI: 10.1016/j.jocmr.2023.100007] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 12/10/2023] [Indexed: 01/13/2024] Open
Abstract
"Cases of SCMR" is a case series on the SCMR website (https://www.scmr.org) for the purpose of education. The cases reflect the clinical presentation, and the use of cardiovascular magnetic resonance (CMR) in the diagnosis and management of cardiovascular disease. The 2022 digital collection of cases are presented in this manuscript.
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Affiliation(s)
- Jason N Johnson
- Division of Pediatric Cardiology and Pediatric Radiology, The University of Tennessee Health Science Center, Memphis, TN, USA
| | - Hamidreza Pouraliakbar
- Rajaie Cardiovascular, Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Mahdavi
- Rajaie Cardiovascular, Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Abdolmohammad Ranjbar
- Rajaie Cardiovascular, Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran; Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Kristopher Pfirman
- Department of Cardiovascular Medicine, Geisinger Medical Center, Danville, PA, USA
| | - Vishal Mehra
- Department of Cardiovascular Medicine, Geisinger Medical Center, Danville, PA, USA
| | - Shahzad Ahmed
- Department of Cardiovascular Medicine, Geisinger Medical Center, Danville, PA, USA
| | - Wejdan Ba-Atiyah
- Pediatric Cardiology Section, Department of Pediatrics, King Faisal Specialist Hospital and Research Center, Jeddah, Saudi Arabia
| | - Mohammed Omar Galal
- Pediatric Cardiology Section, Department of Pediatrics, King Faisal Specialist Hospital and Research Center, Jeddah, Saudi Arabia
| | - Riad Abou Zahr
- Pediatric Cardiology Section, Department of Pediatrics, King Faisal Specialist Hospital and Research Center, Jeddah, Saudi Arabia
| | - Nasir Hussain
- Department of Advanced Cardiac Imaging, Allegheny General Hospital, Pittsburgh, PA, USA
| | | | - Victor Farah
- Department of Advanced Cardiac Imaging, Allegheny General Hospital, Pittsburgh, PA, USA
| | | | | | - Marc Lee
- Division of Pediatric Cardiology, Nationwide Children's Hospital, Columbus, OH, USA
| | - Jason Williams
- Division of Pediatric Cardiology, Nationwide Children's Hospital, Columbus, OH, USA
| | - Simon Lee
- Division of Pediatric Cardiology, Nationwide Children's Hospital, Columbus, OH, USA
| | | | - Daniel E Clark
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Sean G Hughes
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Madhusudan Ganigara
- Division of Pediatric Cardiology, The University of Chicago & Biological Sciences, Chicago, IL, USA
| | - Mohamed Nagiub
- Division of Pediatric Cardiology, Virginia Tech Carilion School of Medicine, Roanoke, VA, USA
| | - Tarique Hussain
- Division of Pediatric Cardiology, Children's Medical Center Dallas, Dallas, TX, USA
| | - Cecilia Kwok
- Cardiology Department, Western Health, St Albans, Victoria, Australia
| | - Han S Lim
- Cardiology Department, Austin and Northern Health, University of Melbourne, Victoria, Australia
| | - Mark Nolan
- Cardiology Department, Western Health, St Albans, Victoria, Australia; Baker Heart and Diabetes Institute, Melbourne, Australia
| | - Daniel S Kikuchi
- Osler Medical Residency, The Johns Hopkins Hospital, Baltimore, MD, USA
| | - Clive A Goulbourne
- Division of Cardiology, Department of Medicine, Emory University, Atlanta, GA, USA
| | - Anurag Sahu
- Division of Cardiology, Department of Medicine, Emory University, Atlanta, GA, USA
| | - Berge Sievers
- International School Düsseldorf, Düsseldorf, Germany
| | - Berk Sievers
- International School Düsseldorf, Düsseldorf, Germany
| | - Burkhard Sievers
- Department of Internal Medicine, Divisions of Cardiology, Pulmonology, Vascular Medicine, Nephrology and Intensive Care Medicine, Sana Klinikum Remscheid, Germany
| | - Rimmy Garg
- University of Illinois College of Medicine Peoria, OSF St. Francis Medical Center, Peoria, IL, USA
| | - Carlos Requena Armas
- University of Illinois College of Medicine Peoria, OSF St. Francis Medical Center, Peoria, IL, USA
| | - Vijayasree Paleru
- University of Illinois College of Medicine Peoria, OSF St. Francis Medical Center, Peoria, IL, USA
| | - Ritu Agarwal
- Department of Radiology, Eternal Hospital, Jaipur, India
| | - Rengarajan Rajagopal
- Department of Radiology, All India Institute of Medical Sciences, Jodhpur, India
| | - Pranav Bhagirath
- Department of Cardiology, St. Thomas Hospital, London, England, UK
| | - Rebecca Kozor
- Department of Cardiology, Royal North Shore Hospital, The University of Sydney, St Leonards, Australia
| | - Ashish Aneja
- Department of Cardiology, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Robert Tunks
- Division of Pediatric Cardiology, Penn State Health, Milton S. Hershey Medical Center, Hershey, PA, USA
| | - Sylvia S M Chen
- Adult Congenital Heart Disease, The Prince Charles Hospital, Australia.
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Osho A, Fernandes MF, Poudel R, de Lemos J, Hong H, Zhao J, Li S, Thomas K, Kikuchi DS, Zegre-Hemsey J, Ibrahim N, Shah NS, Hollowell L, Tamis-Holland J, Granger CB, Cohen M, Henry T, Jacobs AK, Jollis JG, Yancy CW, Goyal A. Race-Based Differences in ST-Segment-Elevation Myocardial Infarction Process Metrics and Mortality From 2015 Through 2021: An Analysis of 178 062 Patients From the American Heart Association Get With The Guidelines-Coronary Artery Disease Registry. Circulation 2023; 148:229-240. [PMID: 37459415 DOI: 10.1161/circulationaha.123.065512] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 06/13/2023] [Indexed: 07/20/2023]
Abstract
BACKGROUND Systems of care have been developed across the United States to standardize care processes and improve outcomes in patients with ST-segment-elevation myocardial infarction (STEMI). The effect of contemporary STEMI systems of care on racial and ethnic disparities in achievement of time-to-treatment goals and mortality in STEMI is uncertain. METHODS We analyzed 178 062 patients with STEMI (52 293 women and 125 769 men) enrolled in the American Heart Association Get With The Guidelines-Coronary Artery Disease registry between January 1, 2015, and December 31, 2021. Patients were stratified into and outcomes compared among 3 racial and ethnic groups: non-Hispanic White, Hispanic White, and Black. The primary outcomes were the proportions of patients achieving the following STEMI process metrics: prehospital ECG obtained by emergency medical services; hospital arrival to ECG obtained within 10 minutes for patients not transported by emergency medical services; arrival-to-percutaneous coronary intervention time within 90 minutes; and first medical contact-to-device time within 90 minutes. A secondary outcome was in-hospital mortality. Analyses were performed separately in women and men, and all outcomes were adjusted for age, comorbidities, acuity of presentation, insurance status, and socioeconomic status measured by social vulnerability index based on patients' county of residence. RESULTS Compared with non-Hispanic White patients with STEMI, Hispanic White patients and Black patients had lower odds of receiving a prehospital ECG and achieving targets for door-to-ECG, door-to-device, and first medical contact-to-device times. These racial disparities in treatment goals were observed in both women and men, and persisted in most cases after multivariable adjustment. Compared with non-Hispanic White women, Hispanic White women had higher adjusted in-hospital mortality (odds ratio, 1.39 [95% CI, 1.12-1.72]), whereas Black women did not (odds ratio, 0.88 [95% CI, 0.74-1.03]). Compared with non-Hispanic White men, adjusted in-hospital mortality was similar in Hispanic White men (odds ratio, 0.99 [95% CI, 0.82-1.18]) and Black men (odds ratio, 0.96 [95% CI, 0.85-1.09]). CONCLUSIONS Race- or ethnicity-based disparities persist in STEMI process metrics in both women and men, and mortality differences are observed in Hispanic White compared with non-Hispanic White women. Further research is essential to evolve systems of care to mitigate racial differences in STEMI outcomes.
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Affiliation(s)
- Asishana Osho
- Department of Surgery, Division of Cardiac Surgery, Massachusetts General Hospital, Boston (A.O.)
| | | | - Ram Poudel
- American Heart Association, Dallas, TX (R.P., H.H., J.Z., S.L., K.T., L.H.)
| | - James de Lemos
- University of Texas Southwestern Medical Center, Dallas (J.d.L.)
| | - Haoyun Hong
- American Heart Association, Dallas, TX (R.P., H.H., J.Z., S.L., K.T., L.H.)
| | - Juan Zhao
- American Heart Association, Dallas, TX (R.P., H.H., J.Z., S.L., K.T., L.H.)
| | - Shen Li
- American Heart Association, Dallas, TX (R.P., H.H., J.Z., S.L., K.T., L.H.)
| | - Kathie Thomas
- American Heart Association, Dallas, TX (R.P., H.H., J.Z., S.L., K.T., L.H.)
| | - Daniel S Kikuchi
- Osler Medical Residency, Johns Hopkins Hospital, Baltimore, MD (D.S.K.)
| | | | - Nasrien Ibrahim
- Harvard T.H. Chan School of Public Health, Boston, MA (N.I.)
| | - Nilay S Shah
- Department of Medicine, Division of Cardiology, Northwestern University Medical School, Chicago, IL (N.S.S., C.W.Y.)
| | - Lori Hollowell
- American Heart Association, Dallas, TX (R.P., H.H., J.Z., S.L., K.T., L.H.)
| | | | | | | | - Timothy Henry
- The Christ Hospital Heart and Vascular Institute, Cincinnati, OH (T.H., J.G.J.)
| | | | - James G Jollis
- The Christ Hospital Heart and Vascular Institute, Cincinnati, OH (T.H., J.G.J.)
| | - Clyde W Yancy
- Department of Medicine, Division of Cardiology, Northwestern University Medical School, Chicago, IL (N.S.S., C.W.Y.)
| | - Abhinav Goyal
- Department of Medicine, Division of Cardiology, Emory University School of Medicine, Atlanta, GA (A.G.)
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Kikuchi DS, Mustin DE, Ghanouni A, Walsh MD. A review of pediatric macromastia etiology and indications for reduction mammaplasty. J Plast Reconstr Aesthet Surg 2023; 77:209-217. [PMID: 36587475 DOI: 10.1016/j.bjps.2022.12.003] [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: 02/10/2022] [Revised: 12/02/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022]
Abstract
BACKGROUND Macromastia in adolescents is both physically and psychologically debilitating during a period in life when individuals are particularly vulnerable to peer pressure and social norms. Early recognition and intervention by both pediatricians and surgeons are critical to avoid unnecessary suffering. While reduction mammaplasty is the gold standard for the management of symptomatic macromastia in adults, the management of macromastia in pediatric patients remains controversial. In particular, there is great discussion regarding the timing of reconstructive breast surgery in pediatric patients. METHODS A comprehensive review of the literature was performed to identify all articles related to macromastia in patients ≤16 years of age, the age at which full development is typically achieved in the United States. The etiologies of pediatric macromastia, approaches to management, and outcomes are summarized herein. FINDINGS Pathological breast hypertrophy in pediatric patients is a rare finding and may occur secondary to juvenile hypertrophy of the breast (JHB) and pseudoangiomatous stromal hyperplasia (PASH). While medical management of these pathologies has been attempted with varying success, reduction mammaplasty is safe and effective in pediatric patients. There are, however, a number of pediatric-specific considerations that must be taken into account prior to surgery. We provide an algorithm for approaching pediatric macromastia.
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Affiliation(s)
- Daniel S Kikuchi
- Osler Medical Residency, Johns Hopkins Hospital, Baltimore, MD, United States
| | | | - Arian Ghanouni
- General Surgery Residency, Emory University Hospital, Atlanta, GA, United States
| | - Mark D Walsh
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Emory University, United States
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Kikuchi DS, Goulbourne CA, Starbuck KD, Fernandes MF. Case report: intravenous leiomyomatosis with intracaval and intracardiac growth. Eur Heart J Case Rep 2022; 7:ytac464. [PMID: 36600803 PMCID: PMC9799196 DOI: 10.1093/ehjcr/ytac464] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 08/02/2022] [Accepted: 11/29/2022] [Indexed: 12/03/2022]
Abstract
Background Intravenous leiomyomatosis (IVL) is a rare, benign smooth muscle cell tumour that extends beyond the pelvis. These tumours grow within vascular channels and can progress to involve the heart and pulmonary vasculature. Case Summary A 44-year-old female initially presented to her primary care physician for subacute bloating. In the weeks leading up to her presentation, she was in good health. On admission, computed tomography (CT) imaging of the abdomen and pelvis was notable for a mixed solid and cystic mass arising from the fundal myometrium with invasion into the inferior vena cava (IVC). Transthoracic echocardiogram (TTE) was notable for mobile mass in the right atrium originating from the IVC. The mass was further evaluated by cardiac magnetic resonance (CMR) imaging before a multidisciplinary, single-staged thoracoabdominal resection was performed. The procedure was well tolerated, and the entire mass was successfully removed without complication. Subsequently, pathological analysis of the resected tumour revealed benign smooth muscle cells, confirming the diagnosis of IVL. Discussion Intravenous leiomyomatosis is a rare cause of right-sided cardiac tumours but should be considered in premenopausal females, even those with a prior history of hysterectomy. The clinical presentation of patients with IVL is varied and imaging including CMR, CT, and TTE to evaluate the tissue characteristics and source of the cardiac mass should be performed. Finally, while imaging revealing a freely mobile pelvic mass extending into the IVC and right heart chambers is strongly suggestive of IVL, definitive diagnosis requires pathological analysis of resected tissue.
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Affiliation(s)
| | - Clive A Goulbourne
- Division of Cardiology, Department of Medicine, Emory University, 1364 E Clifton Rd NE, Atlanta, GA 30322, USA
| | - Kristen D Starbuck
- Division of Gynaecologic Oncology, Department of Gynaecology and Obstetrics, Emory University, 1364 E Clifton Rd NE, Atlanta, GA 30322, USA
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5
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Eidson LN, Gao Q, Qu H, Kikuchi DS, Campos ACP, Faidley EA, Sun YY, Kuan CY, Pagano RL, Lassègue B, Tansey MG, Griendling KK, Hernandes MS. Poldip2 controls leukocyte infiltration into the ischemic brain by regulating focal adhesion kinase-mediated VCAM-1 induction. Sci Rep 2021; 11:5533. [PMID: 33692398 PMCID: PMC7970934 DOI: 10.1038/s41598-021-84987-z] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 02/22/2021] [Indexed: 11/29/2022] Open
Abstract
Stroke is a multiphasic process involving a direct ischemic brain injury which is then exacerbated by the influx of immune cells into the brain tissue. Activation of brain endothelial cells leads to the expression of adhesion molecules such vascular cell adhesion molecule 1 (VCAM-1) on endothelial cells, further increasing leukocyte recruitment. Polymerase δ-interacting protein 2 (Poldip2) promotes brain vascular inflammation and leukocyte recruitment via unknown mechanisms. This study aimed to define the role of Poldip2 in mediating vascular inflammation and leukocyte recruitment following cerebral ischemia. Cerebral ischemia was induced in Poldip2+/+ and Poldip2+/− mice and brains were isolated and processed for flow cytometry or RT-PCR. Cultured rat brain microvascular endothelial cells were used to investigate the effect of Poldip2 depletion on focal adhesion kinase (FAK)-mediated VCAM-1 induction. Poldip2 depletion in vivo attenuated the infiltration of myeloid cells, inflammatory monocytes/macrophages and decreased the induction of adhesion molecules. Focusing on VCAM-1, we demonstrated mechanistically that FAK activation was a critical intermediary in Poldip2-mediated VCAM-1 induction. In conclusion, Poldip2 is an important mediator of endothelial dysfunction and leukocyte recruitment. Thus, Poldip2 could be a therapeutic target to improve morbidity following ischemic stroke.
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Affiliation(s)
- Lori N Eidson
- Department of Physiology, Emory University, Atlanta, GA, 30322, USA
| | - Qingzeng Gao
- Division of Cardiology, Department of Medicine, Emory University, 101 Woodruff Circle, 308-C WMB, Atlanta, GA, 30322, USA
| | - Hongyan Qu
- Division of Cardiology, Department of Medicine, Emory University, 101 Woodruff Circle, 308-C WMB, Atlanta, GA, 30322, USA
| | - Daniel S Kikuchi
- Division of Cardiology, Department of Medicine, Emory University, 101 Woodruff Circle, 308-C WMB, Atlanta, GA, 30322, USA
| | - Ana Carolina P Campos
- Division of Cardiology, Department of Medicine, Emory University, 101 Woodruff Circle, 308-C WMB, Atlanta, GA, 30322, USA.,Department of Neuroscience, Hospital Sírio-Libanês, São Paulo, Brazil
| | - Elizabeth A Faidley
- Division of Cardiology, Department of Medicine, Emory University, 101 Woodruff Circle, 308-C WMB, Atlanta, GA, 30322, USA
| | - Yu-Yo Sun
- Department of Neuroscience, University of Virginia, Charlottesville, VA, 22904, USA
| | - Chia-Yi Kuan
- Department of Neuroscience, University of Virginia, Charlottesville, VA, 22904, USA
| | - Rosana L Pagano
- Department of Neuroscience, Hospital Sírio-Libanês, São Paulo, Brazil
| | - Bernard Lassègue
- Division of Cardiology, Department of Medicine, Emory University, 101 Woodruff Circle, 308-C WMB, Atlanta, GA, 30322, USA
| | - Malú G Tansey
- Department of Physiology, Emory University, Atlanta, GA, 30322, USA.,Department of Neuroscience, Center for Translational Research in Neurodegenerative Disease, College of Medicine, Normal Fixel Institute for Neurological Diseases, University of Florida, Gainesville, FL, 32610, USA.,Department of Neurology, Center for Translational Research in Neurodegenerative Disease, College of Medicine, Normal Fixel Institute for Neurological Diseases, University of Florida, Gainesville, FL, 32610, USA
| | - Kathy K Griendling
- Division of Cardiology, Department of Medicine, Emory University, 101 Woodruff Circle, 308-C WMB, Atlanta, GA, 30322, USA
| | - Marina S Hernandes
- Division of Cardiology, Department of Medicine, Emory University, 101 Woodruff Circle, 308-C WMB, Atlanta, GA, 30322, USA.
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Kikuchi DS, Campos ACP, Qu H, Forrester SJ, Pagano RL, Lassègue B, Sadikot RT, Griendling KK, Hernandes MS. Poldip2 mediates blood-brain barrier disruption in a model of sepsis-associated encephalopathy. J Neuroinflammation 2019; 16:241. [PMID: 31779628 PMCID: PMC6883676 DOI: 10.1186/s12974-019-1575-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [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: 04/09/2019] [Accepted: 08/29/2019] [Indexed: 11/10/2022] Open
Abstract
Background Sepsis-associated encephalopathy (SAE), a diffuse cerebral dysfunction in the absence of direct CNS infection, is associated with increased rates of mortality and morbidity in patients with sepsis. Increased cytokine production and disruption of the blood-brain barrier (BBB) are implicated in the pathogenesis of SAE. The induction of pro-inflammatory mediators is driven, in part, by activation of NF-κΒ. Lipopolysaccharide (LPS), an endotoxin produced by gram-negative bacteria, potently activates NF-κΒ and its downstream targets, including cyclooxygenase-2 (Cox-2). Cox-2 catalyzes prostaglandin synthesis and in the brain prostaglandin, E2 is capable of inducing endothelial permeability. Depletion of polymerase δ-interacting protein 2 (Poldip2) has previously been reported to attenuate BBB disruption, possibly via regulation of NF-κΒ, in response to ischemic stroke. Here we investigated Poldip2 as a novel regulator of NF-κΒ/cyclooxygenase-2 signaling in an LPS model of SAE. Methods Intraperitoneal injections of LPS (18 mg/kg) were used to induce BBB disruption in Poldip2+/+ and Poldip2+/− mice. Changes in cerebral vascular permeability and the effect of meloxicam, a selective Cox-2 inhibitor, were assessed by Evans blue dye extravasation. Cerebral cortices of Poldip2+/+ and Poldip2+/− mice were further evaluated by immunoblotting and ELISA. To investigate the role of endothelial Poldip2, immunofluorescence microscopy and immunoblotting were performed to study the effect of siPoldip2 on LPS-mediated NF-κΒ subunit p65 translocation and Cox-2 induction in rat brain microvascular endothelial cells. Finally, FITC-dextran transwell assay was used to assess the effect of siPoldip2 on LPS-induced endothelial permeability. Results Heterozygous deletion of Poldip2 conferred protection against LPS-induced BBB permeability. Alterations in Poldip2+/+ BBB integrity were preceded by induction of Poldip2, p65, and Cox-2, which was not observed in Poldip2+/− mice. Consistent with these findings, prostaglandin E2 levels were significantly elevated in Poldip2+/+ cerebral cortices compared to Poldip2+/− cortices. Treatment with meloxicam attenuated LPS-induced BBB permeability in Poldip2+/+ mice, while having no significant effect in Poldip2+/− mice. Moreover, silencing of Poldip2 in vitro blocked LPS-induced p65 nuclear translocation, Cox-2 expression, and endothelial permeability. Conclusions These data suggest Poldip2 mediates LPS-induced BBB disruption by regulating NF-κΒ subunit p65 activation and Cox-2 and prostaglandin E2 induction. Consequently, targeted inhibition of Poldip2 may provide clinical benefit in the prevention of sepsis-induced BBB disruption. Electronic supplementary material The online version of this article (10.1186/s12974-019-1575-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Daniel S Kikuchi
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, 101 Woodruff Circle, 308 WMB, Atlanta, GA, 30322, USA
| | | | - Hongyan Qu
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, 101 Woodruff Circle, 308 WMB, Atlanta, GA, 30322, USA
| | - Steven J Forrester
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, 101 Woodruff Circle, 308 WMB, Atlanta, GA, 30322, USA
| | - Rosana L Pagano
- Division of Neuroscience, Hospital Sírio-Libanês, São Paulo, SP, Brazil
| | - Bernard Lassègue
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, 101 Woodruff Circle, 308 WMB, Atlanta, GA, 30322, USA
| | - Ruxana T Sadikot
- Division of Pulmonary and Critical Care, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Kathy K Griendling
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, 101 Woodruff Circle, 308 WMB, Atlanta, GA, 30322, USA
| | - Marina S Hernandes
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, 101 Woodruff Circle, 308 WMB, Atlanta, GA, 30322, USA.
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Abstract
Reactive oxygen species (ROS) are well known for their role in mediating both physiological and pathophysiological signal transduction. Enzymes and subcellular compartments that typically produce ROS are associated with metabolic regulation, and diseases associated with metabolic dysfunction may be influenced by changes in redox balance. In this review, we summarize the current literature surrounding ROS and their role in metabolic and inflammatory regulation, focusing on ROS signal transduction and its relationship to disease progression. In particular, we examine ROS production in compartments such as the cytoplasm, mitochondria, peroxisome, and endoplasmic reticulum and discuss how ROS influence metabolic processes such as proteasome function, autophagy, and general inflammatory signaling. We also summarize and highlight the role of ROS in the regulation metabolic/inflammatory diseases including atherosclerosis, diabetes mellitus, and stroke. In order to develop therapies that target oxidative signaling, it is vital to understand the balance ROS signaling plays in both physiology and pathophysiology, and how manipulation of this balance and the identity of the ROS may influence cellular and tissue homeostasis. An increased understanding of specific sources of ROS production and an appreciation for how ROS influence cellular metabolism may help guide us in the effort to treat cardiovascular diseases.
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Affiliation(s)
- Steven J Forrester
- From the Division of Cardiology, Department of Medicine, Emory University, Atlanta GA
| | - Daniel S Kikuchi
- From the Division of Cardiology, Department of Medicine, Emory University, Atlanta GA
| | - Marina S Hernandes
- From the Division of Cardiology, Department of Medicine, Emory University, Atlanta GA
| | - Qian Xu
- From the Division of Cardiology, Department of Medicine, Emory University, Atlanta GA
| | - Kathy K Griendling
- From the Division of Cardiology, Department of Medicine, Emory University, Atlanta GA.
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8
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Hernandes MS, Lassègue B, Hilenski LL, Adams J, Gao N, Kuan CY, Sun YY, Cheng L, Kikuchi DS, Yepes M, Griendling KK. Polymerase delta-interacting protein 2 deficiency protects against blood-brain barrier permeability in the ischemic brain. J Neuroinflammation 2018; 15:45. [PMID: 29452577 PMCID: PMC5816395 DOI: 10.1186/s12974-017-1032-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [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] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Accepted: 12/11/2017] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Polymerase δ-interacting protein 2 (Poldip2) is a multifunctional protein that regulates vascular extracellular matrix composition and matrix metalloproteinase (MMP) activity. The blood-brain barrier (BBB) is a dynamic system assembled by endothelial cells, basal lamina, and perivascular astrocytes, raising the possibility that Poldip2 may be involved in maintaining its structure. We investigated the role of Poldip2 in the late BBB permeability induced by cerebral ischemia. METHODS Transient middle cerebral artery occlusion (tMCAO) was induced in Poldip2+/+ and Poldip2+/- mice. The volume of the ischemic lesion was measured in triphenyltetrazolium chloride-stained sections. BBB breakdown was evaluated by Evans blue dye extravasation. Poldip2 protein expression was evaluated by western blotting. RT-PCR, zymography, and ELISAs were used to measure mRNA levels, activity, and protein levels of cytokines and MMPs. Cultured astrocytes were transfected with Poldip2 siRNA, and mRNA levels of cytokines were evaluated as well as IκBα protein degradation. RESULTS Cerebral ischemia induced the expression of Poldip2. Compared to Poldip2+/+ mice, Poldip2+/- animals exhibited decreased Evans blue dye extravasation and improved survival 24 h following stroke. Poldip2 expression was upregulated in astrocytes exposed to oxygen and glucose deprivation (OGD) and siRNA-mediated downregulation of Poldip2 abrogated OGD-induced IL-6 and TNF-α expression. In addition, siRNA against Poldip2 inhibited TNF-α-induced IκBα degradation. TNF-α, IL-6, MCP-1, VEGF, and MMP expression induced by cerebral ischemia was abrogated in Poldip2+/- mice. The protective effect of Poldip2 depletion on the increased permeability of the BBB was partially reversed by systemic administration of TNF-α. CONCLUSIONS Poldip2 is upregulated following ischemic stroke and mediates the breakdown of the BBB by increasing cerebral cytokine production and MMP activation. Therefore, Poldip2 appears to be a promising novel target for the development of therapeutic strategies to prevent the development of cerebral edema in the ischemic brain.
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Affiliation(s)
- Marina S Hernandes
- Division of Cardiology, Department of Medicine, Emory University, 101 Woodruff Circle, 308 WMB, Atlanta, GA, 30322, USA
| | - Bernard Lassègue
- Division of Cardiology, Department of Medicine, Emory University, 101 Woodruff Circle, 308 WMB, Atlanta, GA, 30322, USA
| | - Lula L Hilenski
- Division of Cardiology, Department of Medicine, Emory University, 101 Woodruff Circle, 308 WMB, Atlanta, GA, 30322, USA
| | - Jonathan Adams
- Division of Endocrinology, Metabolism and Lipids, Department of Medicine, Emory University, Atlanta, GA, 30322, USA
| | - Ning Gao
- Division of Neurology, Department of Pediatrics, Emory University, Atlanta, GA, 30322, USA
| | - Chia-Yi Kuan
- Division of Neurology, Department of Pediatrics, Emory University, Atlanta, GA, 30322, USA
| | - Yu-Yo Sun
- Division of Neurology, Department of Pediatrics, Emory University, Atlanta, GA, 30322, USA
| | - Lihong Cheng
- Department of Neurology, Emory University, Atlanta, GA, 30322, USA
| | - Daniel S Kikuchi
- Division of Cardiology, Department of Medicine, Emory University, 101 Woodruff Circle, 308 WMB, Atlanta, GA, 30322, USA
| | - Manuel Yepes
- Department of Neurology, Emory University, Atlanta, GA, 30322, USA
- Division of Neuroscience, Yerkes National Primate Research Center, Emory University, Atlanta, GA, 30329, USA
| | - Kathy K Griendling
- Division of Cardiology, Department of Medicine, Emory University, 101 Woodruff Circle, 308 WMB, Atlanta, GA, 30322, USA.
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