首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 906 毫秒
1.
OBJECTIVES: Fabry disease is caused by deficiency of alpha-galactosidase A, and typically causes multi-organ dysfunction. Patients with manifestations limited to the heart, mainly left ventricular hypertrophy (LVH), have been reported as a disease variation. We have reported a 3% prevalence of this cardiac variant in men with LVH, which we designated 'cardiac Fabry disease'. The purposes of this study were to evaluate the terminal stage cardiac manifestations and autopsy findings in patients with cardiac Fabry disease. METHODS: We examined seven terminal stage patients with cardiac Fabry disease. During hospitalization, standard 12-lead electrocardiograms, Holter electrocardiograms, and echocardiograms were obtained. Autopsies were performed and macroscopic along with microscopic findings were evaluated. RESULTS: Six patients died of heart failure and one of ventricular fibrillation. Electrocardiograms revealed the presence of conduction abnormalities and nonsustained ventricular tachycardia. Echocardiograms and autopsy findings revealed LVH in all patients. Localized basal posterior wall thinning of the left ventricle was detected in the six patients who died of heart failure. All patients had severe left ventricular dysfunction. Histologically, myocardial cells, but not cardiac vascular endothelial cells, showed glycosphingolipid accumulation. No accumulation was observed in other organs or in systemic vascular endothelial cells. CONCLUSIONS: Severe left ventricular dysfunction with associated conduction disturbances and ventricular arrhythmias occur in patients with terminal stage cardiac Fabry disease. Furthermore, LVH is present and associated with thinning of the base of the left ventricular posterior wall. In contrast to typical Fabry disease, accumulation of glycosphingolipids was observed in myocardial cells but not in other organs.  相似文献   

2.
Perrot A  Osterziel KJ  Beck M  Dietz R  Kampmann C 《Herz》2002,27(7):699-702
PATHOGENESIS: Fabry disease is an inherited lysosomal storage disorder caused by deficiency of the enzyme alpha-galactosidase A. The enzyme deficiency results in accumulation of glycosphingolipids in the lysosomes n nearly all cell types and tissues leading to a multisystem disease. MANIFESTATIONS include painful crisis, angiokeratomas, corneal dystrophy, and hypohydrosis. The severe renal, cerebrovascular, and cardiac involvement is predominantly responsible for premature mortality in Fabry patients. The disease is X-linked and manifests primarily in hemizygous males but also heterozygous females can be affected. CARDIAC INVOLVEMENT is frequent in Fabry disease. Patients develop hypertrophic cardiomyopathy, arrhythmias, conduction abnormalities, and valvular abnormalities. Although Fabry disease leads to a complex clinical syndrome, there are studies indicating that manifestations can be limited to the heart. The isolated cardiac variant of Fabry disease seems to be more common than previously thought: around 3-6% of male patients with left ventricular hypertrophy seem to suffer from this disease variant. ENZYME REPLACEMENT THERAPY: Recent advances in molecular biology and genetic engineering have enabled the development of enzyme replacement therapy in Fabry disease. Results from two independent therapy studies are indeed promising: Infusion of the enzyme preparation seems to be well tolerated and effective in catabolizing the lipid deposits. This enzyme replacement therapy could be one of the first examples for causal treatment of left ventricular hypertrophy. Therefore, early diagnosis of hypertrophy patients with the cardiac variant of Fabry disease is important.  相似文献   

3.
Although classic Fabry's disease results in multiple causes of death, the cardiac variant of Fabry's disease affects only the cardiac system and results in initial symmetric left ventricular (LV) hypertrophy and later LV dysfunction, asymmetric basal posterior LV wall thinning, restrictive mitral flow, and functional mitral regurgitation with end-stage chronic heart failure (CHF), leading to death. The purpose of this study was to investigate whether these findings predict prognoses in patients with cardiac Fabry's disease. In 13 consecutive men with cardiac Fabry's disease, LV wall thickness, the ejection fraction, mitral E-wave deceleration time, the LV Tei index, and functional mitral regurgitation were measured by echocardiography. Patients were followed for 5 to 96 months (mean 41 +/- 9). Eight patients developed New York Heart Association class III CHF, and 6 experienced cardiac death. A LV Tei index >0.60 and basal posterior LV wall thinning with a ratio of ventricular septal to posterior wall thickness >1.3 significantly preceded CHF and death (Tei index: 4.4 and 5.1 years; posterior wall thinning: 4.0 and 4.7 years), respectively (p <0.05). In conclusion, an increased LV Tei index and asymmetric basal posterior LV wall thinning are important echocardiographic findings that precede CHF and cardiac death in patients with cardiac Fabry's disease.  相似文献   

4.
Cardiac manifestations of Anderson-Fabry disease are usually part of a multiorgan involvement; they are frequently recognized in the young adult and increase morbidity and mortality. Cardiac complications, first hypertension and diastolic dysfunction, are observed in about half of patients and are accessible to the usual management of hypertension, heart failure, coronary artery disease, rhythm or conduction disturbances. However, the cardiac variant may present as an isolated or predominant cardiac involvement, with left ventricular hypertrophy being the most apparent sign, that could lead to the wrong diagnosis of ? idiopathic ? hypertrophic cardiomyopathy of sarcomeric origin (in 1-4% of cases, up to 6% in males before 40 years). However, in Fabry disease, hypertrophy is more often concentric without subaortic obstruction, while search for signs of Fabry disease (history of acroparesthesia or anhidrosis, renal dysfunction or stroke) should be systematic. Early identification of subjects with Fabry disease allows to check for target organ damage, family screening, genetic counseling and specific enzyme replacement therapy. The latter, in the absence of irreversible and extended myocardial fibrosis and/or severe renal dysfunction, is efficient on the progression of renal disease and cardiac hypertrophy and delayed in parallel the occurrence of a first renal, cardiac or neurologic event.  相似文献   

5.
Fabry disease is an X-linked recessive lysosomal storage disorder with variable phenotype characterized by the accumulation of glycosphingolipid in various tissues. Unlike patients with the classical systemic Fabry disease entity, who present with multiple organ involvement, patients with a cardiac variant of Fabry disease are characterized mainly by myocardial hypertrophy. Therefore, the cardiac variant of Fabry disease may be defined as a cardiomyocytic storage disorder, thus, mimicking the clinical features of hypertrophic obstructive and especially non-obstructive cardiomyopathy. In patients with unexplained left ventricular hypertrophy the diagnosis of a cardiac variant of Fabry disease is performed by light- and electron microscopic evaluation of endomyocardial catheter biopsy specimens and/or serologic investigations (decreased activity of alpha-galactosidase A in plasma or leucocytes). Several studies show that between 4% and 8% of unselected patients with the clinical features of hypertrophic non-obstructive cardiomyopathy have a cardiac variant of Fabry disease. In each patient with unexplained myocardial hypertrophy concealed myocardial storage disease, especially cardiac Fabry disease has to be considered and should be ruled out or confirmed by endomyocardial catheter biopsy. This is important because of the recently reported alpha-galactosidase A enzyme replacement therapy in Fabry disease. Randomized, multicenter studies are mandatory to test the hypothesis that enzyme replacement therapy leads to a beneficial clinical effect in the cardiac variant form of Fabry disease and may prevent the progression of the disease in asymptomatic patients.  相似文献   

6.
Fabry's disease is a rare lysosomal storage disease caused by the X-linked defect of the enzyme alpha-galactosidase A leading to the intracellular accumulation of glycosphingolipids in various organs and tissues. Cardiac involvement is frequent and, in individuals with some residual enzyme activity, may be the sole manifestation of the disease. Hemizygous men are generally more seriously affected than heterozygous women. The dominant cardiac manifestations include myocardial hypertrophy of the left ventricle, which, in some patients, mimics hypertrophic cardiomypathy. Left ventricular systolic function is usually preserved, on the other hand mild to moderate diastolic dysfunction is regularly detected. Valvular abnormalities are frequently noted. However, hemodynamically significant lesions are rare. Conduction system involvement leads initially to the shortening of atrioventricular conduction, in later stages, with a progression of the disease, antrioventricular blocks and various forms of supraventricular and ventricular arrhythmias appear. Myocardial ischemia in Fabry disease has in most cases a functional origin due to endothelial dysfunction of coronary arteries and also due to the increase oxygen demand of hypertrophied myocardium. The results of so far performed studies with enzyme replacement therapy are promising in preventing further deterioration and even improving function of affected organs.  相似文献   

7.
Fabry Disease is an X-linked lysosomal storage disorder leading to the accumulation of glycosphingolipids, mainly globotriaosylceramides in all tissues and solid organs of the body. The disease was described by Johannes Fabry and William Anderson coevally in 1898. Beside the involvement of the central nervous system, peripheral nerves, kidneys, skin and endovascular endothelium, the heart plays a major role in the disease. Left ventricular hypertrophy is one hallmark initially presenting with preserved ventricular function. However, with progression of the disease patients die due to heart failure. Though angina is often reported, the incidence of epicardial coronary stenosis is not a dominant feature, if at all small vessel disease can occur. In respect of arrhythmias a broad spectrum can be seen including shortened or prolonged PR-intervals, AV blocks of different degrees and sometimes malignant ventricular arrhythmias. In the past, women were considered to be carriers of the disease but hardly to develop clinical symptoms. In recent years there is evidence that female carriers may more often be affected with severe symptoms. In addition, a group of Fabry patients displaying mainly cardiac involvement were described as having a cardiac variant of the disease. This implied the hypothesis that some of those patients with unexplained myocardial hypertrophy do suffer from Fabry disease. Since 2002 enzyme replacement therapy is available and there is first evidence for its efficacy to reduce hypertrophy and increase myocardial function. If this is associated with a prognostic improvement has to be determined in future studies.  相似文献   

8.
Summary Fabry Disease is an X-linked lysosomal storage disorder leading to the accumulation of glycosphingolipids, mainly globotriaosylceramides in all tissues and solid organs of the body. The disease was described by Johannes Fabry and William Anderson coevally in 1898. Beside the involvement of the central nervous system, peripheral nerves, kidneys, skin and endovascular endothelium, the heart plays a major role in the disease. Left ventricular hypertrophy is one hallmark initially presenting with preserved ventricular function. However, with progression of the disease patients die due to heart failure. Though angina is often reported, the incidence of epicardial coronary stenosis is not a dominant feature, if at all small vessel disease can occur. In respect of arrhythmias a broad spectrum can be seen including shortened or prolonged PR-intervals, AV blocks of different degrees and sometimes malignant ventricular arrhythmias. In the past, women were considered to be carriers of the disease but hardly to develop clinical symptoms. In recent years there is evidence that female carriers may more often be affected with severe symptoms. In addition, a group of Fabry patients displaying mainly cardiac involvement were described as having a cardiac variant of the disease. This implied the hypothesis that some of those patients with unexplained myocardial hypertrophy do suffer from Fabry disease. Since 2002 enzyme replacement therapy is available and there is first evidence for its efficacy to reduce hypertrophy and increase myocardial function. If this is associated with a prognostic improvement has to be determined in future studies.  相似文献   

9.
Blood pressure elevation has numerous sequelae, including myocardial infarction, stroke, congestive heart failure, end-stage renal disease, and peripheral vascular disease in adults. The impact of blood pressure elevation on target organs in children and adolescents has been less well studied. The most useful measure of cardiac effects of hypertension is the echocardiogram. Studies have now defined normal standards for left ventricular mass in young patients. In order to account for differences in body size, it is most appropriate to use left ventricular mass divided by the individual s height raised to a power of 2.7. It has been demonstrated that there is a high prevalence of left ventricular hypertrophy in adolescents with essential hypertension. Some adolescents develop severe hypertrophy and abnormal left ventricular geometry, even to a degree that would be associated with increased risk of cardiovascular disease morbidity in an adult patient. Further research is needed to better evaluate the regression of left ventricular hypertrophy. Clinicians should assess left ventricular mass index in the evaluation of pediatric patients with hypertension.  相似文献   

10.
Clinical and morphologic findings are described in two patients with congenital hypoplasia of portions of both right and left ventricular free walls in the absence of associated coronary or valvular heart disease. One, a 61 year old man who had never had clinical evidence of cardiac dysfunction, died suddenly and unexpectedly. The second, a 55 year old woman, died of progressive, eventually intractable congestive heart failure of 29 months' duration. Although at least 22 necropsy patients have previously been reported to have “parchment-like” thinning of portions of the right ventricular free wall, only one patient has previously been described with such thinning of portions of both right and left ventricular free walls. The spectrum of right or right and left ventricular wall congenital hypoplasia is a broad one, with nearly half of described patients dying of congestive heart failure in the 1st year of life and the other half reaching adulthood with or without manifestations of cardiac dysfunction.  相似文献   

11.
Fabry disease is caused by intracellular accumulation of glycosphingolipids in various tissues, secondary to mutations in the GLA gene (Xq22). Classically described as affecting hemizygous males with no residual alpha-galactosidase A activity, it is now known to affect both sexes, with later and less severe manifestations in females. The manifestations of this disease are systemic: neurological, cutaneous (angiokeratomas), renal, cardiovascular (left ventricular hypertrophy, valve thickening or rhythm disturbances), cochlear-vestibular, and cerebrovascular. In the absence of treatment there is progressive damage to vital organs with renal failure, stroke, heart failure or rhythm perturbations, leading to severe impairment of quality of life as well as reduced life expectancy. We describe the case of a female patient with a history of cryptogenic ischemic stroke at the age of 38 years and chronic renal failure with proteinuria, who presented to the emergency room with atrial fibrillation. The echocardiogram revealed concentric left ventricular hypertrophy, diastolic dysfunction and decreased longitudinal strain in the basal septum. In the context of a screening protocol, she was diagnosed with Fabry disease and a previously undescribed mutation was identified.  相似文献   

12.
PURPOSE OF REVIEW: The development of effective enzyme replacement/enhancement therapy makes of clinical relevance considering Fabry disease in the differential diagnosis of patients with hypertrophic cardiomyopathy. In particular the opportunity to significantly modify the clinical progression of the disease has reinforced the need for early diagnosis of Fabry cardiomyopathy. RECENT FINDINGS: The study with tissue Doppler of Fabry patients with endomyocardial biopsy-proven cardiac involvement showed a reduction of both diastolic and systolic myocardial velocities recorded at septal and lateral corners of mitral annulus. Tissue Doppler abnormalities were present not only in patients with left ventricular hypertrophy but also in younger patients with normal cardiac wall thickness and represent the first sign of myocardial damage. Furthermore tissue Doppler studies have been shown useful in detecting cardiac involvement in female carriers with no systemic manifestations of Fabry disease. In patients already submitted to enzyme-replacement therapy tissue Doppler and strain rate imaging represent useful noninvasive tools in assessing treatment efficacy. SUMMARY: Tissue Doppler imaging can provide early detection of cardiac involvement in Fabry disease and represents the most accurate and sensitive noninvasive tool for the diagnosis of myocardial dysfunction and for the assessment of cardiac improvement during enzyme replacement therapy. The detection of tissue Doppler abnormalities in female carriers may represent a hint for an invasive assessment of cardiac involvement.  相似文献   

13.
Systemic sclerosis (SS) can involve the pericardium, myocardium, conduction system, and cardiac valves. The presence of overt clinical signs of cardiac disease is a poor prognostic sign. Clinical manifestations include dyspnea, palpitations, chest pain, syncope, and symptoms of right heart failure. Prevalence of clinically symptomatic pericardial disease is 5-16%. However, ecocardiographic prevalence is 5.4- 41% and at autopsy is 33-77.5%. Patchy fibrosis is the characteristic myocardial finding in SS. Contraction band necrosis is the typical pathological finding. Important complications of fibrosis include left ventricular hypertrophy, as well as systolic and diastolic dysfunction of both ventricles. Early detection of these abnormalities is very important, mainly of the diastolic dysfunction, since it occurs before the systolic dysfunction and can predict important cardiac damage. Association of skeletal myositis with myocardial disease has been described. Patients with skeletal myositis are more likely to develop congestive heart failure, sustained symptomatic arrythmias, and cardiac sudden death. Coronary arteries are normal in systemic sclerosis, but there is no endomyocardial vessel involvement. There is an increased prevalence of arrhytmias, mainly premature atrial and ventricular contractions, as well as conduction system disease. Cardiac valvular involvement is minor in systemic sclerosis; mitral valve is the most frequently affected. Other abnormalities described in this disease include peripheral large vessels stiffness and secondary cardiac involvement due to pulmonary and systemic arterial hypertension. Cardiac involvement confers a high morbi-mortality risk in systemic sclerosis.  相似文献   

14.
法布里病(Fabry)是一种罕见的X染色体连锁遗传性疾病, 由于a-半乳糖苷酶A( alphagalactosidase A, GLA, 一种溶酶体酶)基因发生突变或缺失,引起体内GLA部分或全部缺乏,造成其代谢底物三己糖酰基鞘脂醇( globotriaosylceramide, Gb3)在人体各器官、组织蓄积,引起多个系统损害,其中心血管系统受累常见,主要表现为心肌肥厚、瓣膜损害、收缩/舒张功能减低,心律失常等,这些病变与患者心力衰竭、心源性猝死等密切相关。为了提高临床医生对Fabry病患者心脏受累表现的认识和诊治,本文将对Fabry 心肌病诊断与治疗的新进展作一综述。  相似文献   

15.
INTRODUCTION: Fabry disease is a rare X-linked lysosomal storage disorder caused by a deficiency of alpha-galactosidase, which results in progressive intracellular accumulation of glycosphingolipids in various tissues. Cardiac involvement is frequent, with left ventricular (LV) hypertrophy (concentric, apical or asymmetric septal) as the most common finding. Evaluating LV systolic dysfunction with conventional echocardiography is not sufficiently sensitive to detect impaired myocardial function early in the course of the disease. Doppler myocardial imaging can quantify changes in global and regional longitudinal myocardial function with great precision. AIM: To identify parameters of cardiac dysfunction in patients with Fabry disease with no cardiac symptoms using conventional or Doppler echocardiography and tissue Doppler (including tissue tracking, strain and strain rate). METHODS: Four patients with Fabry disease (3 female; mean age 47 +/- 17 years) and 29 healthy controls (19 female and 10 male; mean age 38 +/- 14 years) were studied with conventional echocardiography and tissue Doppler imaging using a Vivid 7 scanner. The following parameters were measured: LV dimensions, ejection fraction (using Simpson's rule), systolic and diastolic velocities and tissue tracking of the mitral annulus at six sites (apical views). LV peak systolic strain and strain rate were obtained in 12 segments from apical views. RESULTS: Two patients had LV hypertrophy (one concentric and one apical). Diastolic impairment was detected in three patients by reduced flow propagation velocity of early transmitral flow (Vp) and E/Vp ratio. Mitral annulus systolic velocities were lower in Fabry disease than in the controls. Peak systolic strain and strain rate were diminished in all segments in three patients, showing impaired myocardial systolic function. The results are presented for each of the four patients. CONCLUSIONS: In patients with Fabry disease, with no cardiac symptoms and normal LV systolic function on conventional echocardiography, diastolic dysfunction was detected by Vp and E/Vp ratio regardless of LV hypertrophy. However, tissue Doppler imaging was able to detect impaired myocardial systolic function, particularly in patients with LV hypertrophy.  相似文献   

16.

Arterial hypertension represents the most frequent cardiovascular risk factor that is associated with cardiac remodeling. Hypertensive heart disease was defined by the presence of left ventricular hypertrophy (LVH) and diastolic dysfunction, and it has been diagnosed by echocardiography in everyday clinical practice. Interstitial myocardial fibrosis is the underlying cause of hypertension-induced cardiac remodeling, and it could not be visualized with different echocardiographic methods. Cardiac magnetic resonance (CMR) and its methods such as late gadolinium enhancement, and T1 mapping provides qualitative and quantitative assessment of interstitial myocardial fibrosis in hypertensive patients. Furthermore, CMR can provide differentiation of LVH between hypertensive patients and cardiomyopathies (hypertrophic or Fabry disease). Timely diagnosis of cardiac impairment and early treatment is essential because regression of LVH could be achieved with adequate treatment. Diffuse cardiac fibrosis in hypertensive patients might be an underlying mechanism that explains the increased cardiovascular morbidity and mortality in this population. Future longitudinal investigations are necessary to determine causal relationship between diffuse fibrosis and cardiovascular outcome in these patients. The aim of this review is to summarize the current knowledge regarding CMR techniques and their potential usage in patients with hypertensive heart disease.

  相似文献   

17.
心脏脂肪变性与肥胖相关性心脏病   总被引:3,自引:0,他引:3  
肥胖病是心脏病的危险因素,传统观点认为,在肥胖患者中,由于血流动力学异常和脂代谢异常导致的心脏重构是患者易发展为冠状动脉性疾病和心力衰竭的原因。但最近研究发现,脂肪在心脏沉积可以直接损伤心脏,影响左室重建,导致扩张型心肌病。对肥胖动物模型的研究发现,心肌中脂质过度沉积可导致左室肥厚和缺血性、扩张型心肌病。通过基因治疗或药物干预降低心脏的脂质沉积,可以预防肥胖相关性心脏病的发生。临床研究也提示,心肌的脂质含量可以作为肥胖患者心脏病的生物指标,并且可以成为治疗的靶点。但这方面的研究才刚刚开始,有待进一步的研究。  相似文献   

18.
AIMS: Fabry disease may be difficult to differentiate from other causes of left ventricular hypertrophy such as other myocardial storage diseases (including amyloidosis), hypertrophic cardiomyopathy (HCM), or hypertensive heart disease (HHD). We sought to determine simple criteria to best differentiate the above mentioned cardiac diseases. METHODS AND RESULTS: All patients in a six-year time period with left ventricular hypertrophy due to Fabry disease (13 patients), biopsy proven cardiac amyloidosis (16 patients), non-obstructive HCM (17 patients), and 22 randomly selected patients with advanced HHD were compared. Retrospective analysis of clinical characteristics, findings of electrocardiogram (ECG) and echocardiography by blind review was performed. RESULTS: No single clinical characteristic or findings of ECG or echocardiography could reliably differentiate between the various diseases. Increased echogenicity/granular sparkling, valvular abnormalities, abnormal renal function, and diastolic function were not helpful discriminators. In a univariate analysis, four criteria (acroparesthesia, anhydrosis, absence of hypertension and presence of Sokolow criteria for left ventricular hypertrophy in the ECG) were significant for Fabry disease. By logistic regression analysis, the following most suitable discriminative parameters were identified: hypertension in HHD (specificity 82%), orthostasis and/or pericardial effusion for amyloidosis (specificity 93%), papillary muscle anomaly in non-obstructive HCM (specificity 92%), and Fabry disease if neither hypertension orthostatis, pericardial effusion nor a papillary muscle anomaly was present (specificity 87%). CONCLUSION: A combination of symptoms, echocardiographic findings and ECG in unexplained left ventricular hypertrophy may help to differentiate amyloidosis, non-obstructive HCM and hypertensive heart disease from Fabry disease. The results of this preliminary study will have to be confirmed in a prospective study.  相似文献   

19.
Opinion statement Left ventricular failure is the final common pathway for a wide spectrum of myocardial insults, including systemic hypertension and myocardial infarction. Although left ventricular hypertrophy is an adaptive response to pressure and volume overload, this process becomes maladaptive if left untreated and pathologic cardiac hypertrophy then becomes an important and independent risk factor for the development of heart failure. Despite its importance, the transition from hypertrophy to heart failure in humans is poorly understood. The focus of treatment should be prevention of heart failure and other cardiovascular events, such as stroke and atrial fibrillation. When heart failure is present, treatment with medical and device therapy is then focused on improving functional capacity, increasing survival, and preventing progression to end-stage heart failure.  相似文献   

20.
Cardiac alterations in patients with arterial hypertension comprise the manifestation of stenosis in epicardial arteries, disease of coronary resistive vessels, prothrombotic changes and endothelial dysfunction, pronounced perivascular and interstitiell fibrosis, left ventricular hypertrophy, dilatation of the left atrium, increased sympathetic drive and degeneration of aortic valve. These alterations leads to the major clinical manifestations of hypertensive heart disease, that are symptoms of reduced coronary conductance, left ventricular hypertrophy, diastolic and systolic dysfunction with or without left ventricular enlargement and arrythmia. Different non-inavsive and invase procedures are available for screening and follow up of patients with hypertensive heart disease. The primary therapeutic target is, apart from lowering blood pressure, to reverse cardiac manifestations of arterial hypertension using specific therapeutic algorithms.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号