scholarly journals TGF-beta-dependent mechanisms of patho genesis of Marfan syndrome and related disorders

2009 ◽  
Vol 15 (2) ◽  
pp. 223-226
Author(s):  
A. S. Rudoy
Keyword(s):  
Connective Tissue ◽  
Marfan Syndrome ◽  
Joint Hypermobility ◽  
Autosomal Dominant Disorder ◽  
Molecular Physiology ◽  
Joint Hypermobility Syndrome ◽  
Major Life ◽  
Aortic Aneurysm And Dissection ◽  
Growth Factor Signalling ◽  
Fibrillin 1

Recent research on the molecular physiology of fibrillin and the pathophysiology of Marfan syndrome and related connective tissue disorders has changed our understanding of this pathology by demonstrating changes in growth factor signalling and in matrix-cell interactions. Marfan syndrome is an autosomal dominant disorder of connective tissue caused by mutations in fibrillin-1. Fibrillin-1 contributes to the regulated activation of the cytokine TGF-ß, and enhanced signaling is a consequence of fibrillin-1 deficiency. Thereby, increased TGF-ß signaling may contribute to the multisystem pathogenesis of Marfan syndrome, including the development of myxomatous changes of the atrioventricular valve, aortic aneurysm and dissection, joint hypermobility syndrome. These data suggest that anti-TGF-β therapeutic strategy for patients with Marfan syndrome can be useful in prevention of the major life-threatening manifestation of this disorder.

Connective tissue disorders in patients with spontaneous intracranial hypotension

Cephalalgia ◽  
2011 ◽  
Vol 31 (6) ◽  
pp. 691-695 ◽  
Author(s):  
Fang-Chun Liu ◽  
Jong-Ling Fuh ◽  
Yen-Feng Wang ◽  
Shuu-Jiun Wang
Keyword(s):  
Connective Tissue ◽  
Marfan Syndrome ◽  
Intracranial Hypotension ◽  
Spontaneous Intracranial Hypotension ◽  
Joint Hypermobility ◽  
Csf Leak ◽  
Connective Tissue Disorders ◽  
Hypermobility Syndrome ◽  
Joint Hypermobility Syndrome ◽  
Benign Joint Hypermobility Syndrome

Objective: Spontaneous intracranial hypotension (SIH) is caused by spinal cerebrospinal fluid (CSF) leakage. An underlying connective tissue disorder has been hypothesized to cause dural weakness and predisposition to CSF leak. We conducted a case-controlled study to investigate the role of connective tissue disorders in SIH patients. Methods: We recruited 55 consecutive SIH patients (38 F, 17 M; mean age, 40.8 ± 9.8 years) and 55 age- and sex-matched control individuals (mean age, 38.0 ± 8.9 years) for this study. The connective tissue disorders were evaluated by: (i) Beighton hypermobility scores and revised diagnostic criteria for benign joint hypermobility syndrome; (ii) skin and skeletal manifestations of Ehlers–Danlos syndrome (EDS); and (iii) skeletal features of Marfan syndrome. Results: The frequencies of joint hypermobility according to Beighton scores >4/9 (SIH 23.6% vs controls 16.4%, P = 0.48) and revised benign joint hypermobility syndrome criteria (SIH 23.6% vs controls 34.5%, P = 0.29) did not differ between SIH patients and controls. Sixteen patients and 16 controls had one or more skin features of EDS ( P = 1.0). Nine SIH patients (16.4%) demonstrated the skeletal features of Marfan syndrome; this frequency did not differ from that of the control group (9.1%; P = 0.262). Only dolichostenomelia (disproportionately long limbs) was more prominent in SIH patients than in controls (34.5% vs 9.1%; P = 0.002). Conclusion: Compared with Western studies, the frequencies of connective tissue disorders were higher in our SIH patients. However, these frequencies did not differ between SIH patients and control individuals, except for dolichostenomelia.

scholarly journals Early-Onset Marfan Syndrome: A Case Series

2018 ◽  
Vol 08 (02) ◽  
pp. 086-090
Author(s):  
Mohanageetha Ardhanari ◽  
Deborah Barbouth ◽  
Sethuraman Swaminathan
Keyword(s):  
Heart Failure ◽  
Connective Tissue ◽  
Marfan Syndrome ◽  
Early Onset ◽  
Autosomal Dominant ◽  
Case Series ◽  
Autosomal Dominant Disorder ◽  
Fibrillin 1 ◽  
Valvular Insufficiency ◽  
Multisystem Manifestations

AbstractMutations in fibrillin 1 cause Marfan syndrome (MFS), an autosomal dominant disorder of the connective tissue, with multisystem manifestations. In early-onset MFS, the physical characteristics are expressed much earlier than the classical MFS. Those affected by this form generally have their mutations restricted to the gene “hotspot” region of exons 24 to 32. Historically, affected individuals usually die within the first few years of life due to heart failure secondary to severe valvular insufficiency. We report three patients with early-onset MFS, whose clinical evolution has been remarkably positive, when compared with other reported cases in the literature.

scholarly journals Marfan Syndrome: A Case Report

2012 ◽  
Vol 2012 ◽  
pp. 1-4
Author(s):  
Rajendran Ganesh ◽  
Rajendran Vijayakumar ◽  
Haridoss Selvakumar
Keyword(s):  
Stainless Steel ◽  
Case Report ◽  
Connective Tissue ◽  
Blood Vessel ◽  
Marfan Syndrome ◽  
Autosomal Dominant ◽  
The Body ◽  
Tissue Protein ◽  
Fibrillin 1 ◽  
Systemic Disorder

Marfan syndrome is an autosomal dominant systemic disorder of the connective tissue. Children affected by the Marfan syndrome carry a mutation in one of their two copies of the gene that encodes the connective tissue protein fibrillin-1. Marfan syndrome affects most organs and tissues, especially the skeleton, lungs, eyes, heart, and the large blood vessel that distributes blood from the heart to the rest of the body. A case report of Marfan syndrome has been reported with oral features. The dental problems of the child were treated under general anesthesia and a one-month review showed intact stainless steel crowns' restorations and no signs of secondary caries.

scholarly journals Role of heritable connective tissue diseases phenotypes in assessing the risk for internal diseases

2014 ◽  
Vol 95 (4) ◽  
pp. 501-505
Author(s):  
A V Tyurin ◽  
R A Davletshin ◽  
R M Muratova
Keyword(s):  
Mitral Valve ◽  
Connective Tissue ◽  
Mitral Valve Prolapse ◽  
Musculoskeletal Diseases ◽  
Connective Tissue Diseases ◽  
Joint Hypermobility ◽  
Hypermobility Syndrome ◽  
Joint Hypermobility Syndrome ◽  
Systemic Manifestations

Aim. To identify the prevalence of main phenotypes of polygenic heritable connective tissue diseases in patients with internal diseases and to assess the prevalence of different internal diseases in such patients. Methods. The study involved 600 patients (254 males, 346 females) aged 18 to 64 years. Average age of males was 52±3.8 years, females - 47±2.2 years. Patients were examined to reveal the signs of different phenotypes of heritable connective tissue diseases in patients with internal diseases, as well as the severity of connective tissue diseases, and possibilities for it screening using the wrist and thumb hypermobility tests. Results. Signs of heritable connective tissue diseases were revealed in 147 (24.5%) patients with internal diseases. In females, those signs were observed in 104 (30.0%) cases, of which 44 (42.3%) were graded as mild, 35 (33.7%) - moderate, 25 (24.0%) - severe. In males, signs of heritable connective tissue diseases were revealed in 43 cases (16.9%), including mild - 17 (39.5%), moderate - 14 (32.5%) and severe - 12 (28.0%). Ehlers-like phenotype was the most common (52.0%), Marfan-like phenotype was observed in 14.0% of cases, primary mitral valve prolapse was diagnosed in 7.0% of patients, unclassifiable phenotype was observed in 11.0% of cases. Joint hypermobility syndrome was revealed in 31.0% of patients, presenting both as specific phenotypes (Marfan-like, Ehlers-like) and as a self-phenotype (31.9% of all the patients with heritable connective tissue diseases phenotype). Benign joint hypermobility was observed in 6.1% of cases. Symptoms of heritable connective tissue diseases were more frequent in patients with gastrointestinal and musculoskeletal diseases. Conclusion. The most common phenotype of heritable connective tissue diseases is Ehlers-like with skin, bone and systemic manifestations. Presence of heritable connective tissue diseases was most commonly associated with gastrointestinal and musculoskeletal diseases.

scholarly journals Simultaneous Occurrence of Duane Retraction Syndrome with Marfan Syndrome

2011 ◽  
Vol 2011 ◽  
pp. 1-3 ◽  
Author(s):  
Mihir Kothari ◽  
Florence Manurung ◽  
Bhavesh Mithiya
Keyword(s):  
Case Report ◽  
Connective Tissue ◽  
Marfan Syndrome ◽  
Autosomal Dominant ◽  
Simultaneous Occurrence ◽  
Autosomal Dominant Disorder ◽  
First Case ◽  
Retraction Syndrome ◽  
Congenital Cranial Dysinnervation Disorder ◽  
Duane Retraction Syndrome

Marfan syndrome (MFS) is an autosomal dominant disorder of connective tissue, while Duane retraction syndrome (DRS) is a congenital cranial dysinnervation disorder (CCDD) which can be transmitted as autosomal dominant disorder in 5–10% of patients. In this paper, we present an 8-year-old girl who presented with left eye DRS and bilateral subluxation of the lens associated with MFS in absence of familial involvement. To our knowledge this is the first case report of DRS with MFS. The occurrence of these syndromes together is very rare and appears to be coincidental.

scholarly journals Genetic analysis of the contribution of LTBP-3 to thoracic aneurysm in Marfan syndrome

2015 ◽  
Vol 112 (45) ◽  
pp. 14012-14017 ◽  
Author(s):  
Lior Zilberberg ◽  
Colin K. L. Phoon ◽  
Ian Robertson ◽  
Branka Dabovic ◽  
Francesco Ramirez ◽  
...  
Keyword(s):  
Aortic Aneurysm ◽  
Marfan Syndrome ◽  
Autosomal Dominant ◽  
Aortic Disease ◽  
Elastic Fibers ◽  
Thoracic Aneurysm ◽  
Tgfβ Signaling ◽  
Autosomal Dominant Disorder ◽  
Present Evidence ◽  
Fibrillin 1

Marfan syndrome (MFS) is an autosomal dominant disorder of connective tissue, caused by mutations of the microfibrillar protein fibrillin-1, that predisposes affected individuals to aortic aneurysm and rupture and is associated with increased TGFβ signaling. TGFβ is secreted from cells as a latent complex consisting of TGFβ, the TGFβ propeptide, and a molecule of latent TGFβ binding protein (LTBP). Improper extracellular localization of the latent complex can alter active TGFβ levels, and has been hypothesized as an explanation for enhanced TGFβ signaling observed in MFS. We previously reported the absence of LTBP-3 in matrices lacking fibrillin-1, suggesting that perturbed TGFβ signaling in MFS might be due to defective interaction of latent TGFβ complexes containing LTBP-3 with mutant fibrillin-1 microfibrils. To test this hypothesis, we genetically suppressed Ltbp3 expression in a mouse model of progressively severe MFS. Here, we present evidence that MFS mice lacking LTBP-3 have improved survival, essentially no aneurysms, reduced disruption and fragmentation of medial elastic fibers, and decreased Smad2/3 and Erk1/2 activation in their aortas. These data suggest that, in MFS, improper localization of latent TGFβ complexes composed of LTBP-3 and TGFβ contributes to aortic disease progression.

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