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Javed M, Goswami DK, Raj H, Lohana K, Goswami B, Karim A, Warayo A, Farooqi P, Alamy H, Ullah ZO, Mohammad A, Farooqi SA, Ali H, Shuja D, Malik J, Baloch ZQ. Cardiac Manifestations in Inherited Metabolic Diseases. Cardiol Rev 2024:00045415-990000000-00299. [PMID: 38980048 DOI: 10.1097/crd.0000000000000753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
Inherited metabolic diseases (IMDs) stem from genetic defects affecting enzyme function within specific metabolic pathways, collectively constituting rare conditions with an incidence of less than 1/100,000 births. While IMDs typically manifest with multisystemic symptoms, cardiac manifestations are common, notably hypertrophic cardiomyopathy. Additionally, they can lead to dilated or restrictive cardiomyopathy, as well as noncompacted left ventricular cardiomyopathy. Rhythm disturbances such as atrioventricular conduction abnormalities, Wolff-Parkinson-White syndrome, and ventricular arrhythmias, along with valvular pathologies and ischemic coronary issues, are also prevalent. This study aims to provide a narrative review of IMDs associated with cardiac involvement, delineating the specific cardiac manifestations of each disorder alongside systemic symptoms pivotal for diagnosis.
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Affiliation(s)
- Mubeena Javed
- From the Department of Medicine, Allama Iqbal Medical College, Lahore, Pakistan
| | - Danish Kumar Goswami
- Department of Medicine, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan
| | - Hem Raj
- Department of Medicine, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan
| | - Kiran Lohana
- Department of Medicine, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan
| | - Barkha Goswami
- Department of Medicine, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan
| | - Ali Karim
- Department of Medicine, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan
| | - Allah Warayo
- Department of Medicine, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan
| | - Palwasha Farooqi
- Department of Medicine, Kabul University of Medical Sciences, Kabul, Afghanistan
| | - Haroon Alamy
- Department of Medicine, Kabul University of Medical Sciences, Kabul, Afghanistan
| | - Zainab Obaid Ullah
- Department of Medicine, Fatima Jinnah Medical University, Lahore, Pakistan
| | - Aamer Mohammad
- Department of Medicine, Rajiv Gandhi University of Health Sciences, Bengaluru, India
| | - Syed Ahmad Farooqi
- Department of Medicine, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan
| | - Hafsah Ali
- Department of Medicine, Jinnah Sindh Medical University, Karachi, Pakistan
| | - Darab Shuja
- Department of Medicine, Services Hospital, Lahore, Pakistan
| | - Jahanzeb Malik
- Department of Cardiovascular Medicine, Cardiovascular Analytics Group, Islamabad, Pakistan
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Cuenca-Gómez JÁ, Lara-Rojas CM, Bonilla-López A. Cardiac manifestations in inherited metabolic diseases. Curr Probl Cardiol 2024; 49:102587. [PMID: 38653442 DOI: 10.1016/j.cpcardiol.2024.102587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 04/20/2024] [Indexed: 04/25/2024]
Abstract
Inherited metabolic diseases (IMD) are caused by the functional defect of an enzyme, of genetic origin, that provokes a blockage in a specific metabolic pathway. Individually, IMD are considered rare diseases, with an incidence of less than 1/100,000 births. The symptoms are usually multisystemic, but frequently include cardiac manifestations. Of these, the most common are cardiomyopathies, especially hypertrophic cardiomyopathy. In addition, they can cause dilated or restrictive cardiomyopathy and non-compacted cardiomyopathy of the left ventricle. Characteristic signs also include rhythm alterations (atrio-ventricular conduction disturbances, Wolff-Parkinson-White syndrome or ventricular arrhythmias), valvular pathology and ischaemic coronary pathologies. The aim of this study is to present a narrative review of the IMD that may produce cardiac involvement. We describe both the specific cardiac manifestations of each disease and the systemic symptoms that guide diagnosis.
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Affiliation(s)
- José Ángel Cuenca-Gómez
- Internal Medicine Service Hospital de Poniente El Ejido, Almería, Spain; Working Group on Minority Diseases of the Spanish Society of Internal Medicine (GTEM-SEMI), Almería, Spain.
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Elizondo G, Saini A, Gonzalez de Alba C, Gregor A, Harding CO, Gillingham MB, Vinocur JM. Cardiac phenotype in adolescents and young adults with long-chain 3-hydroxyacyl CoA dehydrogenase (LCHAD) deficiency. Genet Med 2024; 26:101123. [PMID: 38501492 DOI: 10.1016/j.gim.2024.101123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 03/14/2024] [Accepted: 03/14/2024] [Indexed: 03/20/2024] Open
Abstract
PURPOSE Long-chain 3-hydroxyacyl-coenzyme A dehydrogenase deficiency (LCHADD) is a rare fatty acid oxidation disorder characterized by recurrent episodes of metabolic decompensation and rhabdomyolysis, as well as retinopathy, peripheral neuropathy, and cardiac involvement, such as infantile dilated cardiomyopathy. Because LCHADD patients are surviving longer, we sought to characterize LCHADD-associated major cardiac involvement in adolescence and young adulthood. METHODS A retrospective cohort of 16 adolescent and young adult participants with LCHADD was reviewed for cardiac phenotype. RESULTS Major cardiac involvement occurred in 9 of 16 participants, including sudden death, out-of-hospital cardiac arrest, acute cardiac decompensations with heart failure and/or in-hospital cardiac arrest, end-stage dilated cardiomyopathy, and moderate restrictive cardiomyopathy. Sudden cardiac arrest was more common in males and those with a history of infant cardiomyopathy. CONCLUSION The cardiac manifestations of LCHADD in adolescence and early adulthood are complex and distinct from the phenotype seen in infancy. Life-threatening arrhythmia occurs at substantial rates in LCHADD, often in the absence of metabolic decompensation or rhabdomyolysis. The potential risk factors identified here-male sex and history of infant cardiomyopathy-may hint at strategies for risk stratification and possibly the prevention of these events.
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Affiliation(s)
- Gabriela Elizondo
- Department of Molecular and Medical Genetics, Oregon Health and Science University, Portland, OR
| | - Ajesh Saini
- Department of Molecular and Medical Genetics, Oregon Health and Science University, Portland, OR; Portland State University, Urban Honors College, Portland, OR
| | | | - Ashley Gregor
- Department of Molecular and Medical Genetics, Oregon Health and Science University, Portland, OR
| | - Cary O Harding
- Department of Molecular and Medical Genetics, Oregon Health and Science University, Portland, OR
| | - Melanie B Gillingham
- Department of Molecular and Medical Genetics, Oregon Health and Science University, Portland, OR.
| | - Jeffrey M Vinocur
- Division of Pediatric Cardiology, Yale University School of Medicine, New Haven, CT
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Miller MA, Howarth NE. Sleep and cardiovascular disease. Emerg Top Life Sci 2023; 7:457-466. [PMID: 38084859 PMCID: PMC10754327 DOI: 10.1042/etls20230111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/27/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023]
Abstract
This review centres around the recent evidence in examining the intersection of sleep and cardiovascular disease (CVD). Sleep in this review will be further subdivided to consider both sleep quantity and quality along and will also consider some of the more common sleep disorders, such as insomnia and obstructive sleep apnoea, in the context of CVD. Sleep disorders have been further explored in several specific populations which are both at risk of sleep disorders and CVD. Secondly, the review will present some of the risk factors for CVD that are affected by sleep and sleep disorders which include hypertension, diabetes, and obesity. It will also examine the potential underlying mechanisms including inflammation, appetite control, endocrine, and genetic processes that are affected by sleep and sleep disorders leading to increased risk of CVD development. In addition, we will consider the observed bi-directional relationships between sleep and cardiovascular risk factors. For example, obesity, a risk factor for CVD can be affected by sleep, but in turn can increase the risk of certain sleep disorder development which disrupts sleep, leading to further risk of obesity development and increased CVD risk. Finally, the review will explore emerging evidence around lifestyle interventions that have included a sleep component and how it impacts the management of CVD risk factor. The need for increased awareness of the health effects of poor sleep and sleep disorders will be discussed alongside the need for policy intervention to improve sleep to facilitate better health and well-being.
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Affiliation(s)
- Michelle A. Miller
- Division of Health Sciences (Mental Health and Wellbeing), Warwick Medical School, University of Warwick, Gibbet Hill, Coventry CV4 7AL, U.K
| | - Nathan E. Howarth
- Division of Health Sciences (Mental Health and Wellbeing), Warwick Medical School, University of Warwick, Gibbet Hill, Coventry CV4 7AL, U.K
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Vlaming M, Sauer PJJ, Janssen EPF, van Koppen PJ, Bruijninckx CMA, Akkerman-Zaalberg van Zelst MWM, Neumann HAM, van Gemert MJC. Child Abuse, Misdiagnosed by an Expertise Center: Part I-Medico-Social Aspects. CHILDREN (BASEL, SWITZERLAND) 2023; 10:963. [PMID: 37371195 PMCID: PMC10297267 DOI: 10.3390/children10060963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 05/08/2023] [Accepted: 05/25/2023] [Indexed: 06/29/2023]
Abstract
Child abuse is a dangerous situation for an infant. Professionals need to weigh the risk of failing to act when children are seriously harmed against the serious harm done by carrying out safeguarding interventions. In severe cases, foster care might be advisable. The negative effects for the child's psychosocial development requires that such placement must be based on very solid evidence. Our aim is to identify why Dutch parents whose child may have a medical condition that could mimic symptoms of child abuse have a significant chance of being erroneously convicted and losing custody of their child. As a method, we describe and analyze the following case. An Armenian-Dutch newborn (uncomplicated term vaginal delivery), starting at two weeks after birth, developed small bruises on varying body locations. At two months, a Well-Baby Clinic physician referred the girl to a university hospital, mentioning that there were no reasons to suspect child abuse and that her Armenian grandmother easily bruised as well. However, before consultation by a pediatrician of the hospital-located Expertise Center for Child Abuse, the parents were suspected of child abuse. Based on the expertise center's protocols, skeletal X-rays were made, which showed three healed, asymptomatic rib fractures, while invalid statistics suggested, incorrectly, a 10-100 times more likely non-accidental than accidental cause of the symptoms (discussed in Part II of this series). The expertise enter physician ignored any argument that could show parental innocence, including the positive parent-child relationship reported by the Well-Baby Clinic and the general practitioner. The girl and her older brother were placed in a family foster home and then in a secret home. The case radically resolved when a large bruise also developed there, and an independent tissue disease specialist diagnosed a hereditary connective tissue disorder in the mother, implying that the girl's bruises and rib fractures could well be disease-related. In conclusion, if child abuse is suspected, and foster care placement considered, the patient and the parents should be thoroughly investigated by an independent experienced pediatrician together with an experienced pediatric clinical psychologist or psychotherapist to produce an independent opinion. Children deserve this extra safeguard before being separated from their parents.
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Affiliation(s)
- Marianne Vlaming
- Private Practice, Criminal Psychology and Law, 6986 CL Angerlo, The Netherlands
| | - Pieter J. J. Sauer
- Department of Pediatrics, Beatrix Children’s Hospital, University Medical Center, 9713 GZ Groningen, The Netherlands
| | - Emile P. F. Janssen
- Private Practice, Rehabilitation Medicine & Consultancy, 6137 CL Sittard, The Netherlands
| | - Peter J. van Koppen
- Department of Criminal Law and Criminology, Faculty of Law, VU University Amsterdam, 1081 HV Amsterdam, The Netherlands
| | | | | | | | - Martin J. C. van Gemert
- Department of Biomedical Engineering & Physics, Amsterdam University Medical Centers, Location AMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
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van Gemert MJC, Zwinderman AH, van Koppen PJ, Neumann HAM, Vlaming M. Child Abuse, Misdiagnosed by an Expertise Center-Part II-Misuse of Bayes' Theorem. CHILDREN (BASEL, SWITZERLAND) 2023; 10:843. [PMID: 37238391 PMCID: PMC10217160 DOI: 10.3390/children10050843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/26/2023] [Accepted: 05/04/2023] [Indexed: 05/28/2023]
Abstract
A newborn girl had, from two weeks on, small bruises on varying body locations, but not on her chest. Her Armenian grandmother easily bruised, too. Her mother was diagnosed with hypermobility-type Ehlers-Danlos-Syndrome (hEDS), an autosomal dominant connective tissue disorder, with a 50% inheritance probability. Referral to a University Medical Center located "Dutch Expertise Center for Child Abuse" resulted (prior to consultation) in physical abuse suspicion. Protocol-based skeletal X-rays showed three healed, asymptomatic rib fractures. A protocol-based Bayesian likelihood ratio guesstimation gave 10-100, erroneously used to suggest a 10-100 times likelier non-accidental-than-accidental cause. Foster care placement followed, even in a secret home, where she also bruised, suggesting hEDS inheritance. Correct non-accidental/accidental Bayes' probability of symptoms is (likelihood ratio) × (physical abuse incidence). From the literature, we derived an infant abuse incidence between about ≈0.0009 and ≈0.0026 and a likelihood ratio of <5 for bruises. For rib fractures, we used a zero likelihood ratio, arguing their cause was birth trauma from the extra delivery pressure on the chest, combined with fragile bones as the daughter of an hEDS-mother. We thus derived a negligible abuse/accidental probability between <5 × 0.0009 <0.005 and <5 × 0.0026 <0.013. The small abuse incidence implies that correctly using Bayes' theorem will also miss true infant physical abuse cases. Curiously, because likelihood ratios assess how more often symptoms develop if abuse did occur versus non-abuse, Bayes' theorem then implies a 100% infant abuse incidence (unwittingly) used by LECK. In conclusion, probabilities should never replace differential diagnostic procedures, the accepted medical method of care. Well-known from literature, supported by the present case, is that (child abuse pediatrics) physicians, child protection workers, and judges were unlikely to understand Bayesian statistics. Its use without statistics consultation should therefore not have occurred. Thus, Bayesian statistics, and certainly (misused) likelihood ratios, should never be applied in cases of physical child abuse suspicion. Finally, parental innocence follows from clarifying what could have caused the girl's bruises (inherited hEDS), and rib fractures (birth trauma from fragile bones).
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Affiliation(s)
- Martin J. C. van Gemert
- Department of Biomedical Engineering & Physics, Amsterdam University Medical Centers, Location AMC, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Aeilko H. Zwinderman
- Department of Clinical Epidemiology & Bio-Statistics, Amsterdam University Medical Centers, Location AMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Peter J. van Koppen
- Department of Criminal Law and Criminology, Faculty of Law, VU University, 1081 HV Amsterdam, The Netherlands
| | | | - Marianne Vlaming
- Private Practice, Criminal Psychology and Law, 6986 CL Angerlo, The Netherlands
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Erol M, Gayret OB, Yigit O, Serefoglu Cabuk K, Toksoz M, Tiras M. A Case of Homocystinuria Misdiagnosed as Moyamoya Disease: A Case Report. IRANIAN RED CRESCENT MEDICAL JOURNAL 2016; 18:e30332. [PMID: 27330833 PMCID: PMC4912698 DOI: 10.5812/ircmj.30332] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 08/07/2015] [Accepted: 08/30/2015] [Indexed: 11/16/2022]
Abstract
Introduction Homocystinuria is a hereditary disease caused by a defect in the enzymes involved in metabolizing methionine. Homocystinuria can influence many systems and may be mistaken for other diseases, including Moyamoya disease. Here, we report the case of a 10-year-old male patient with a diagnosis of Moyamoya disease who had been monitored for that for an extended period. The patient’s diagnosis was changed to homocystinuria as a result of lens subluxation and cataract findings. Case Presentation A 10-year-old male patient presented with vomiting, headache, lethargy, muscular weakness, and eye redness. The patient was mentally retarded, his right pupil was hyperemic, and he had muscle weakness on his left side. In addition, his blood pressure was high. The patient’s history included a diagnosis of Moyamoya. A neck and cranial computed tomography (CT) angiography showed no flow bilaterally past the bifurcation of the carotid artery. The patient’s bilateral internal carotid arteries were determined to be occluded. It was considered that his eye findings could be compatible with a metabolic disease. On metabolic screening, the patient’s homocysteine level was very high. In addition, a heterozygous A1298C mutation was identified in MTHFR. Therefore, the patient was started on a diet free from homocysteine and methionine. In addition, his treatment regimen included vitamins B12 and B6. With these treatments, the patient’s complications regressed. Conclusions In cases of unusual vascular lesions, metabolic diseases must be considered. In homocystinuria, early diagnosis and treatment are important. Blood homocysteine levels can be returned to normal, and some complications can be prevented.
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Affiliation(s)
- Meltem Erol
- Department of Pediatrics, Bagcilar Training and Research Hospital, Istanbul, Turkey
- Corresponding Author: Meltem Erol, Department of Pediatrics, Bagcilar Training and Research Hospital, Istanbul, Turkey. Tel: +90-5324578397, Fax: +90-2124404242, E-mail:
| | - Ozlem Bostan Gayret
- Department of Pediatrics, Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Ozgul Yigit
- Department of Pediatrics, Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Kubra Serefoglu Cabuk
- Department of Ophtalmology, Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Mehmet Toksoz
- Department of Radiology, Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Mahir Tiras
- Department of Pediatrics, Bagcilar Training and Research Hospital, Istanbul, Turkey
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9
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Kale Y, Aydemir O, Ceylan O, Bas AY, Demirel N. Hypertrophic Cardiomyopathy After a Single Dose of Dexamethasone in a Preterm Infant. Pediatr Neonatol 2015; 56:268-70. [PMID: 23639746 DOI: 10.1016/j.pedneo.2013.03.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Revised: 09/17/2012] [Accepted: 03/28/2013] [Indexed: 10/26/2022] Open
Abstract
Dexamethasone is widely used in preterm infants with severe pulmonary disease. Hypertrophic cardiomyopathy (HCM) is a transient side effect observed after multiple doses of dexamethasone. We report a preterm infant with myocardial hypertrophy after a single dose of dexamethasone (0.5 mg/kg) used to treat laryngeal edema secondary to prolonged intubation. A benign course was observed without left ventricular outflow tract obstruction and with recovery within 4 weeks. Myocardial effects of dexamethasone may be independent of dose and duration of treatment. The risk/benefit ratio must be carefully considered before using even a single dose of dexamethasone in preterm infants.
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Affiliation(s)
- Yusuf Kale
- Department of Neonatology, Etlik Zübeyde Hanım Women's Health Teaching and Research Hospital, Ankara, Turkey
| | - Ozge Aydemir
- Department of Neonatology, Etlik Zübeyde Hanım Women's Health Teaching and Research Hospital, Ankara, Turkey.
| | - Ozben Ceylan
- Department of Pediatric Cardiology, Dr. Sami Ulus Children's Hospital, Ankara, Turkey
| | - Ahmet Yagmur Bas
- Department of Neonatology, Etlik Zübeyde Hanım Women's Health Teaching and Research Hospital, Ankara, Turkey
| | - Nihal Demirel
- Department of Neonatology, Etlik Zübeyde Hanım Women's Health Teaching and Research Hospital, Ankara, Turkey
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García-Jiménez MC, Baldellou A, García-Silva MT, Dalmau-Serra J, García-Cazorla A, Gómez-López L, Giner CP, Luengo OA, Peña Quintana L, Couce ML, Martínez-Pardo M, Lambruschini N. [Epidemiological study of the metabolic diseases with homocystinuria in Spain]. An Pediatr (Barc) 2011; 76:133-9. [PMID: 22047794 DOI: 10.1016/j.anpedi.2011.08.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2010] [Revised: 01/28/2011] [Accepted: 08/24/2011] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVES To determine the prevalence of homocystinuria in Spain and to establish the measures and mechanisms to ensure its prevention, diagnosis and treatment. MATERIAL AND METHODS A national cross-sectional survey was conducted by means of a questionnaire sent to 35 hospitals in which children and adult patients are treated. RESULTS Using the questionnaires submitted by 25 physicians from 16 centres, 75 patients were identified: 41 transsulphuration defects (one deceased), 27 remethylation (six deaths) and 7 without a syndromic diagnosis. The age at diagnosis varied widely, and 18 cases had more than one sibling affected. The more severe clinical manifestations involved the patients with remethylation defects. There was a high percentage of cognitive impairment, followed by lens diseases. Almost half of the patients had neurological disorders. There was increased vascular involvement in CBS-deficient adults. The therapeutic options most used were, folic acid, hydroxycobalamin and betaine. CONCLUSIONS In view of these results and especially the small number of CBS deficiencies detected, we conclude that there is a need to introduce newborn screening for classical homocystinuria and ensure implementation of an appropriate diagnostic workup in all patients at risk.
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Affiliation(s)
- M C García-Jiménez
- Servicio Pediatría, Unidad de Metabolopatías, Hospital Universitario Miguel Servet, Instituto Aragonés de Ciencias de la Salud, Zaragoza, España.
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Abstract
Cardiovascular disease is a leading cause of mortality worldwide. While the etiology for the majority of cardiovascular disease is presumed to be a combination of genetic and environmental factors, developments in understanding the basic biology of cardiac disorders have been greatly advanced through discoveries made studying heart diseases that exhibit Mendelian forms of inheritance. Most of these diseases primarily affect children and young adults and include cardiomyopathies, arrhythmias, aortic aneurysms, and congenital heart defects. The discovery of the genetic etiologies for these diseases have had significant impact on our understanding of more complex forms of cardiovascular disease and in some cases have led to novel diagnostic and treatment modalities. In this review, we will summarize these seminal genetic discoveries, highlighting a few that have resulted in significant impact on human disease, and discuss the potential utility of studying Mendelian-inherited heart disease with the development of new genetic technologies and our increased understanding of the human genome.
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Affiliation(s)
- Kim L McBride
- Departments of Pediatrics, The Ohio State University College of Medicine, Columbus, Ohio, USA
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Vascular endothelial growth factor broadens lentivector distribution in the heart after neonatal injection. J Cardiol 2009; 54:245-54. [PMID: 19782262 DOI: 10.1016/j.jjcc.2009.05.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2009] [Revised: 05/15/2009] [Accepted: 05/20/2009] [Indexed: 01/08/2023]
Abstract
For some applications, the success of gene therapy depends on the efficiency of gene transfer into target organs, however, delivery to many tissues is limited. Efforts have been made to improve the efficiency of gene transfer into target organs such as the brain by using mannitol or vascular endothelial growth factor (VEGF) prior to gene delivery, since these treatments have been reported to increase vascular permeability in experimental animals. Here, we investigated the effect of VEGF pretreatment of neonatal mice on the ability of injected lentivirus (LV)--engineering expression of firefly luciferase (luc)--to enhance the transduction of various organs, including the brain and heart. LV/luc was delivered to VEGF-treated neonatal mice via the temporal vein. Whole-body bioluminescence imaging (WBLI) of luciferase expression showed that VEGF pretreatment does not diminish transgene expression over time since it remained steady for up to 12 weeks. Ex vivo imaging of the organs and assessments of organ luciferase activity showed that VEGF pretreatment resulted in significantly increased luciferase expression not only in the heart, but also in the brain, lung, and kidney. This study shows that VEGF may have therapeutic importance to enhance the efficiency of viral gene delivery to the heart, as well as to other target organs.
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Halawa A, Brahmbhatt V, Fahrig SA. Initial description of radiofrequency catheter ablation as treatment for atrial flutter in Marfan's syndrome: a case report and literature review. J Interv Card Electrophysiol 2007; 19:37-40. [PMID: 17597390 DOI: 10.1007/s10840-007-9135-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2007] [Accepted: 05/07/2007] [Indexed: 10/23/2022]
Abstract
Marfan's syndrome is a common connective tissue disease with different musculoskeletal, ophthalmic and cardiac manifestations. Marfan's patients carry increased risk for cardiac arrhythmias. Only three cases of atrial flutter in Marfan's patients are described in the literature. We report a fourth case of a young Marfan's patient who presents with typical atrial flutter after motor vehicle accident. After electrical cardioversion, sinus rhythm was restored but he had recurrent atrial flutter on follow up. The patient then underwent electrophysiological study and successful radiofrequency catheter ablation of the flutter circuit. Since discharge, the patient has had no documented arrhythmias on follow up.
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Affiliation(s)
- Ahmad Halawa
- Division of Cardiology, James H. Quillen College of Medicine, East Tennessee State University, Johnson, TN 37614, USA.
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Abstract
Magnetic resonance angiography (MRA) has evolved over the past years from an experimental imaging modality to a technique that is now widely applied in clinical practice. This article reviews the fundamentals of the different magnetic resonance angiographic techniques and how they can be applied for abdominal and peripheral arterial imaging. Currently, contrast-enhanced magnetic resonance angiography (CE-MRA), whereby a luminogram is obtained during initial arterial passage of contrast material, is the most widely used technique. With current hardware and software, high-spatial resolution images of the abdominal aorta and proximal visceral branches can be obtained that are equivalent to intra-arterial digital subtraction angiography (IA-DSA). High-quality imaging of the renal arteries demands isotropic voxels and reformations orthogonal to the vessel axis for evaluation. Contrast-enhanced magnetic resonance angiography of the peripheral vascular tree is now a highly accurate technique and has replaced diagnostic intra-arterial digital subtraction angiography and duplex ultrasonography in many hospitals.
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Affiliation(s)
- Tim Leiner
- Maastricht University Hospital, Department of Radiology, Maastricht, The Netherlands.
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