Dystrophin

肌营养不良蛋白
  • 文章类型: Case Reports
    此病例报告提供了对12岁男性Duchenne肌营养不良(DMD)的物理治疗管理的见解。DMD是一种破坏性的遗传性疾病,其特征是进行性肌肉退化和虚弱。骨骼肌变性是由遗传性疾病引起的。这是一种常见的X连锁疾病,可导致小腿肥大和儿童近端肌肉无力。它经常导致早期死亡,轮椅禁闭,以及电机发展的延迟。物理治疗干预旨在优化DMD患者的功能能力和生活质量。该病例报告强调了物理治疗在管理DMD进展中的有效性。这项研究提出了一个表现出明显临床症状的病例,强调了对抗这种使人衰弱的疾病的先进治疗的紧迫性。结果指标,如体重指数,肺活量测定,手动肌肉测试,世界卫生组织的生活质量量表用于报告患者的进展。治疗计划进行了6周,一周五次.物理治疗策略包括饮食管理,拉伸和夹板技术,和肺训练。虽然目前的治疗侧重于症状管理,正在进行的研究有望开发更有效的治疗方法,以改善受影响个体的预后和生活质量.多学科护理,包括神经理疗康复,在管理DMD的症状和并发症中起着至关重要的作用,强调全面支持患者及其家属的重要性。在我们康复的最后,患者的结局指标显着改善。
    This case report provides insights into the physiotherapy management of a 12-year-old male with Duchenne muscular dystrophy (DMD). DMD is a devastating genetic disorder characterized by progressive muscle degeneration and weakness. Skeletal muscle degeneration is induced by a genetic disorder. It is a common X-linked condition that causes hypertrophy of the calves and proximal muscular weakness in children. It frequently results in early mortality, wheelchair confinement, and delays in motor development. Physiotherapy interventions aim to optimize functional abilities and quality of life in individuals with DMD. This case report highlights the effectiveness of physiotherapy in managing DMD progression. This study presents a case exhibiting notable clinical symptoms, highlighting the urgency for advanced treatments to combat this debilitating disease. Outcome measures such as body mass index, spirometry, manual muscle testing, and the World Health Organization Quality-of-Life scale are used to report patient progress. The treatment plan was carried out for six weeks, five times a week. Physiotherapy strategies include diet management, stretching and splinting techniques, and pulmonary training. While current treatments focus on symptom management, ongoing research holds promise for the development of more effective therapies to improve outcomes and quality of life for affected individuals. Multidisciplinary care, including neurophysiotherapy rehabilitation, plays a crucial role in managing the symptoms and complications of DMD, emphasizing the importance of comprehensive support for patients and their families. At the end of our rehabilitation, the patient showed significant improvement in the outcome measures.
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  • 文章类型: Case Reports
    Duchenne肌营养不良症(DMDMIM#310200)是一种退行性肌肉疾病,由位于Xp21.2上的肌营养不良蛋白基因突变引起。临床特征包括肌肉无力和血清肌酸激酶水平显着升高。一名8岁的中国男孩被诊断出患有Duchenne肌营养不良症(DMD)。进行全外显子组基因测序,并使用Sanger方法验证测序。在肌营养不良蛋白基因的外显子35中发现了一个缺失(c.5021del),预测会产生移码突变并产生提前终止密码子(p。Leu1674CysfsTer47)。它对患者肌肉细胞膜中的肌营养不良蛋白具有致病作用。因此,泼尼松治疗剂量为0.75mg/kg。d被管理。一个月后,观察到跌倒频率显着降低。我们的新发现将扩大引起DMD的致病突变谱。
    Duchenne muscular dystrophy (DMD MIM#310200) is a degenerative muscle disease caused by mutations in the dystrophin gene located on Xp21.2. The clinical features encompass muscle weakness and markedly elevated serum creatine kinase levels. An 8-year-old Chinese boy was diagnosed with Duchenne muscular dystrophy (DMD). Whole exome gene sequencing was conducted and the Sanger method was used to validate sequencing. A deletion (c.5021del) in exon 35 of the dystrophin gene was identified, which was predicted to generate a frameshift mutation and create an early termination codon (p.Leu1674CysfsTer47). It has a pathogenic effect against dystrophin in the muscle cell membrane of the patient. As such, prednisone treatment at a dose of 0.75 mg/kg.d was administered. After one month, a notable reduction in fall frequency was observed. Our new finding will expand the pathogenic mutation spectrum causing DMD.
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  • 文章类型: Review
    临床状况的改善使医生能够更加关注DMD患者的认知功能,导致不仅在受影响的男性中描述认知障碍,但在女性携带者中也是如此。这项研究旨在调查DMD携带者队列中的认知参与,并总结有关DMD/BMD携带者的智力参与和神经心理学特征的最新知识。我们的病例系列包括来自两个不同中心的22名携带者患者(IRCCSMondino,Pavia和PoliclinicoGemelli,罗马),我们回顾性地收集了他们的认知,临床和遗传数据。对于文献综述,我们选择了2011年至2023年以英语发表并在PubMed中引用的9项研究。我们发现DMD携带者的平均智商(74;非常低)低于正常曲线上的平均得分(100作为平均标准分数)。此外,大约50%的人处于“智商极低”的范围内,与一般人群的2-3%相比。来自IRCCSMondino的有症状DMD携带者(平均智商66;极低)的智力残疾发生率较高,但不是无症状的(平均智商99;平均),与普通人群相比。当前文学,虽然有限,似乎证实了携带者存在认知障碍,尽管比受影响的男性温和,但具有相似的神经心理学特征。然而,需要进一步的研究来深入研究这个问题并提供足够的教育支持。
    Improvement in clinical conditions allowed physicians to pay more attention to the cognitive function in DMD patients, leading to description of a cognitive impairment not only in affected males, but in female carriers as well. This study aimed to investigate the cognitive involvement in a cohort of DMD carriers and to summarize the current knowledge about the intellectual involvement and neuropsychological profile in DMD/BMD carriers. Our case series consisted of 22 carrier patients from two different centers (IRCCS Mondino, Pavia and Policlinico Gemelli, Rome), for whom we retrospectively collected cognitive, clinical and genetic data. For literature review, we selected 9 studies published in English language from 2011 to 2023 and cited in PubMed. We found that the average IQ of DMD carriers was lower (74; very low) than the average score on normal curve (100 as average standard score). Furthermore, about 50% of them fell in the \"extremely low IQ\" range, compared with 2-3% of general population. A higher incidence of intellectual disability was confirmed in symptomatic DMD carriers (mean IQ 66; extremely low) from IRCCS Mondino, but not in the asymptomatic ones (mean IQ 99; average), when compared to the general population. Current literature, albeit limited, seems to confirm the presence of a cognitive impairment in carriers, although milder than in affected males but with a similar neuropsychological profile. However, further studies are necessary to delve deeper into this issue and provide adequate educational support.
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  • 文章类型: Journal Article
    这项探索性病例对照研究旨在评估补充杜兴氏肌营养不良(DMD)年轻患者产生的1,3-1,-6β葡聚糖的影响。
    包括27名年龄在5-19岁患有DMD的男性受试者,对照组9例,治疗组18例,分别接受N-163β葡聚糖和常规治疗45天。在执行分析时,还考虑了类固醇的使用,那些没有服用类固醇(类固醇-ve)(对照,n=5;治疗,n=9),那些服用类固醇(类固醇+ve)(对照,n=4;治疗,n=9)。
    IL-6在治疗组中显示出明显的下降,尤其是N-163类固醇组。IL-13在两个治疗组中都有下降,TGF-β水平在治疗组中有显著下降,尤其是N-163类固醇组,(p<0.05)。与对照组相比,治疗组的肌营养不良蛋白水平增加高达32%。医学研究理事会(MRC)分级显示,治疗组18名患者中有12名(67%)的肌肉力量改善略有改善,对照组9名受试者中有4名(44%)。
    补充N-163β葡聚糖食品补充剂产生了有益的作用:炎症和纤维化标志物的显着减少,DMD受试者45天以上血清肌营养不良蛋白的增加和肌肉力量的轻微改善,因此,在验证后,这是DMD的潜在辅助治疗。
    该研究已在印度的临床试验注册中心注册,CTRI/2021/05/033346。5月5日登记,2021年。
    UNASSIGNED: This exploratory case-control study is to evaluate the effects of supplementation of Aureobasidium pullulans-N-163 strain produced 1,3-1,- 6 beta glucan in young patients with Duchenne muscular dystrophy (DMD).
    UNASSIGNED: Twenty-seven male subjects aged 5-19 years with DMD were included, nine in the control arm and 18 in the treatment arm to receive N-163 beta glucan along with conventional therapies for 45 days. While performing the analysis, steroid usage was also taken into consideration, those not administered steroids (Steroid -ve) (Control, n = 5; treatment, n = 9), those administered steroids (Steroid +ve) (Control, n = 4; treatment, n = 9).
    UNASSIGNED: IL-6 showed a significant decrease in the treatment groups, especially the N-163 Steroid -ve group. IL-13 decreased in both treatment groups and TGF-β levels showed a significant decrease in the treatment groups, especially the N-163 Steroid -ve group, (p < 0.05). Dystrophin levels increased by up to 32% in the treatment groups compared to the control. Medical research council (MRC) grading showed slight improvement in muscle strength improvement in 12 out of 18 patients (67%) in the treatment group and four out of nine (44%) subjects in the control group.
    UNASSIGNED: Supplementation with the N-163 beta glucan food supplement produced beneficial effects: a significant decrease in inflammation and fibrosis markers, increase in serum dystrophin and slight improvement in muscle strength in DMD subjects over 45 days, thus making this a potential adjunct treatment for DMD after validation.
    UNASSIGNED: The study was registered in Clinical trials registry of India, CTRI/2021/05/033346. Registered on 5th May, 2021.
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  • 文章类型: Journal Article
    由肌肉功能障碍引起的持续性高CKA血症通常归因于肌肉相关基因的遗传改变,如肌营养不良蛋白基因(DMD)。DMD分析结果的回顾性评估,与持续性高CK血症相关,进行了。
    评估1996-2021年期间转诊的1354例无关病例的病历。关于DMD基因重排和核苷酸变体检测的数据评估。
    总共730例(657例,确定了569个希腊语和88个阿尔巴尼亚语),从而可以对〜1:3800名男性活产的肌营养不良蛋白病发病率进行总体估计。275个不同的DMD改变的异质谱包括外显子缺失/重复,核苷酸变体,和罕见的事件,如染色体易位{t(X;20)},连续的基因缺失和涉及DMD和DOCK8基因的融合基因。种族特异性的发现包括外显子36中的一个常见创始人变体(\'希腊\'变体)。
    大约50%的高CKemia病例以肌养蛋白病为特征,强调DMD变异可能被认为是希腊高CK血症的最常见原因。广泛的遗传和临床异质性的划定是可行的公共卫生决策和治疗诊断的基础,以及建立解决道德考虑的指导方针,特别是与轻度无症状患者亚组有关。
    UNASSIGNED: Persistent hyperCKemia results from muscle dysfunction often attributed to genetic alterations of muscle-related genes, such as the dystrophin gene (DMD). Retrospective assessment of findings from DMD analysis, in association with persistent HyperCKemia, was conducted.
    UNASSIGNED: Evaluation of medical records from 1354 unrelated cases referred during the period 1996-2021. Assessment of data concerning the detection of DMD gene rearrangements and nucleotide variants.
    UNASSIGNED: A total of 730 individuals (657 cases, 569 of Greek and 88 of Albanian origins) were identified, allowing an overall estimation of dystrophinopathy incidence at ~1:3800 live male births. The heterogeneous spectrum of 275 distinct DMD alterations comprised exon(s) deletions/duplications, nucleotide variants, and rare events, such as chromosome translocation {t(X;20)}, contiguous gene deletions, and a fused gene involving the DMD and the DOCK8 genes. Ethnic-specific findings include a common founder variant in exon 36 (\'Hellenic\' variant).
    UNASSIGNED: Some 50% of hyperCKemia cases were characterized as dystrophinopathies, highlighting that DMD variants may be considered the most common cause of hyperCKemia in Greece. Delineation of the broad genetic and clinical heterogeneity is fundamental for actionable public health decisions and theragnosis, as well as the establishment of guidelines addressing ethical considerations, especially related to the mild asymptomatic patient subgroup.
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  • 文章类型: Journal Article
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  • 文章类型: Case Reports
    Duchenne/Becker muscular dystrophy (DMD/BMD) is one of the most common progressive muscular dystrophy diseases with X-linked recessive inheritance. It is mainly caused by the deletion, duplication and point mutation of DMD gene. In rare cases, it is also caused by the destruction of DMD gene by chromosomal structural rearrangement. Here, we report a case of Duchenne/Becker Muscular dystrophy (DMD/BMD) with typical symptoms but unknown genetic defects after MLPA and next generation sequencing tests in other hospitals. Interestingly, we find a pericentric inversion of X chromosome (Chr.X: g. [31939463-31939465del; 31939466-131765063 inv; 131765064-131765067del]) in this patient. We then use the karyotyping, FISH, long-read sequencing and Sanger sequencing technologies to characterize the chromosome rearrangement. We find that this chromosomal aberration disrupt both the DMD gene and the HS6ST2 gene. The patient present with typical DMD symptoms such as muscle weakness, but no obvious symptoms of Paganini-Miozzo syndrome. Our results suggest that the destruction of DMD gene by structural rearrangement is also one of the important causes of DMD. Therefore, we suggest to provide further genetic testing for those DMD patients with unknown genetic defects through routine genetic testing. Cost-effective karyotyping and FISH should be considered firstly to identify chromosome rearrangements. Long-read sequencing followed by Sanger sequencing could be useful to locate the precise breakpoints. The genetic diagnosis of this case made it possible for reproductive intervention in the patient\'s family.
    假肥大型肌营养不良(Duchenne/Becker muscular dystrophy,DMD/BMD)是一种最常见的进行性肌营养不良疾病,呈X-连锁隐性遗传,主要由DMD基因的缺失、重复及点突变所致,极少数病例是由于染色体结构重排破坏了DMD基因而引起疾病的发生。本文报告了1例经多重连接探针扩增技术(multiplex ligation-dependent probe amplification,MLPA)和下一代测序检测后原因未明的、具有典型症状的DMD患者。采用核型分析、FISH分析及三代测序、Sanger测序综合分析发现,患者存在母源性的X染色体臂间倒位(Chr.X:g. [31939463-31939465del; 31939466-131765063 inv; 131765064-131765067del])半合子变异。由于该变异破坏了DMD基因和HS6ST2基因,因此推测该变异是患者发病的遗传学病因。患者表现肌无力等典型的DMD症状,没有明显的Paganini-Miozzo综合征相关症状。本病例的明确诊断,提示结构重排破坏DMD基因也是导致DMD重要原因之一;常规遗传学检测阴性的患者应考虑核型分析、FISH验证等结构重排变异检测技术,通过三代测序技术能确定大概的重排断点位置,Sanger测序可明确断点区域序列。本病例报告通过明确的遗传学诊断为该患者所在家庭进行生殖干预、降低再生育风险提供了诊疗基础。.
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  • 文章类型: Journal Article
    基因治疗,即,任何涉及使用遗传物质作为药物并在很大程度上改变一个或多个基因的转录或翻译的治疗方法,涵盖了广泛的治疗疾病的创新方法,包括神经系统疾病.虽然他们有共同的原则,许多基因治疗方法在它们的作用机制上有很大的不同。它们的成熟度也不同,因为一些已经在临床实践中使用,而另一些从未在人类中使用过。这篇综述的目的是通过杜氏肌营养不良症(DMD)的例子介绍整个基因治疗技术。DMD是一种严重的肌病,由肌养蛋白基因突变导致功能性肌养蛋白缺乏。它是所有神经学家都知道的疾病,几乎所有的基因治疗方法都被应用。在这里,我们讨论有或没有病毒载体的基因转移技术的机制,有或没有基质修复的DNA编辑以及在RNA水平起作用的DNA编辑(RNA编辑,外显子跳跃和终止密码子连读)。对于每种方法,我们介绍了在DMD中获得的结果,并特别关注临床数据。这篇综述还旨在概述优势,与所用方法相关的基因治疗的局限性和风险。
    Gene therapy, i.e., any therapeutic approach involving the use of genetic material as a drug and more largely altering the transcription or translation of one or more genes, covers a wide range of innovative methods for treating diseases, including neurological disorders. Although they share common principles, the numerous gene therapy approaches differ greatly in their mechanisms of action. They also differ in their maturity for some are already used in clinical practice while others have never been used in humans. The aim of this review is to present the whole range of gene therapy techniques through the example of Duchenne muscular dystrophy (DMD). DMD is a severe myopathy caused by mutations in the dystrophin gene leading to the lack of functional dystrophin protein. It is a disease known to all neurologists and in which almost all gene therapy methods were applied. Here we discuss the mechanisms of gene transfer techniques with or without viral vectors, DNA editing with or without matrix repair and those acting at the RNA level (RNA editing, exon skipping and STOP-codon readthrough). For each method, we present the results obtained in DMD with a particular focus on clinical data. This review aims also to outline the advantages, limitations and risks of gene therapy related to the approach used.
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  • 文章类型: Case Reports
    一名56岁的妇女被转诊到我们的医院,以进一步评估射血分数降低的药物难治性心力衰竭。家族病史访谈显示,她家族中的男性死于杜兴氏肌营养不良症(DMD),而她没有骨骼肌疾病。心肌组织病理学显示心肌细胞膜中肌营养不良蛋白表达减少,一项肌营养不良蛋白(DMD)基因分析发现Xp21上外显子8-9的重复,表明她具有肌营养不良蛋白病的心脏特异性表型,即X-连锁扩张型心肌病(XLDCM)。总之,需要仔细的家族史访谈和肌萎缩蛋白病调查才能检测女性的XLDCM.
    A 56-year-old woman was referred to our hospital for the further evaluation of drug-refractory heart failure with a reduced ejection fraction. A family history interview revealed that men in her family had died of Duchenne muscular dystrophy (DMD), whereas she had no skeletal muscle disorder. Myocardial histopathology revealed a reduced dystrophin expression in the cardiomyocyte membrane, and a dystrophin (DMD) gene analysis identified a duplication in exon 8-9 on Xp21, suggesting that she had a cardiac-specific phenotype of dystrophinopathy, i.e. X-linked dilated cardiomyopathy (XLDCM). In conclusion, careful family history interviews and an investigation of dystrophinopathy are required to detect XLDCM in women.
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  • 文章类型: Review
    未经证实:肌养蛋白病是由DMD基因突变引起的。我们报告了3个家庭中的5个男孩,由于DMD基因的点突变而具有异质性表型:外显子15中的半合子酪氨酸到半胱氨酸的变化(c.1724T>C)导致亮氨酸的氨基酸替换为脯氨酸在密码子575处。这种突变以前就有报道,至少有3名先前患者表现出类似的肌痛临床表现,肌红蛋白尿症,偶尔肌肉抽筋.DMD上的突变c.1724T>C(p。Leu575Pro)在Clinvar数据库中列为未知意义的变体。我们的报告提供了有益的证据,表明这种改变应被归类为致病性。
    UNASSIGNED: Dystrophinopathies result from mutations to the DMD gene. We report 5 boys in 3 families with heterogenous phenotypes due to a point mutation in the DMD gene: a hemizygous tyrosine-to-cysteine change in exon 15 (c.1724T>C) resulting in an amino acid substitution of leucine to proline at codon 575. This mutation has been reported before, with at least 3 prior patients presenting with similar clinical findings of myalgia, myoglobinuria, and occasional muscle cramping. The mutation on DMD c.1724T>C (p.Leu575Pro) is listed in the Clinvar database as a variant of unknown significance. Our report provides contributing evidence that this alteration should be classified as pathogenic.
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