scholarly journals Identification of a New Splice Variant of the Human ABCC6 Transporter

2008 ◽  
Vol 2008 ◽  
pp. 1-4 ◽  
Author(s):  
Maria Francesca Armentano ◽  
Angela Ostuni ◽  
Vittoria Infantino ◽  
Vito Iacobazzi ◽  
Maria Antonietta Castiglione Morelli ◽  
...  
Keyword(s):  
Autosomal Recessive ◽  
Autosomal Recessive Disorder ◽  
Pseudoxanthoma Elasticum ◽  
Pcr Analysis ◽  
Kidney Cells ◽  
The Novel ◽  
Alternatively Spliced ◽  
Full Length Transcript ◽  
Spliced Variant ◽  
Extracellular Environment

ABCC6 is a member of the adenosine triphosphate-binding cassette (ABC) gene subfamily C that encodes a protein (MRP6) involved in active transport of intracellular compounds to the extracellular environment. Mutations in ABCC6 cause pseudoxanthoma elasticum (PXE), an autosomal recessive disorder of the connective tissue characterized by progressive calcification of elastic structures in the skin, the eyes, and the cardiovascular system. MRP6 is codified by 31 exons and contains 1503 amino acids. In addition to a full-length transcript of ABCC6, we have identified an alternatively spliced variant of ABCC6 from a cDNA of human liver that lacks exons 19 and 24. The novel isoform was named ABCC6 1924. PCR analysis from cDNA of cell cultures of primary human hepatocites and embryonic kidney confirms the presence of the ABCC61924 isoform. Western blot analysis of the embryonic kidney cells shows a band corresponding to the molecular weight of the truncated protein.

A Novel ATM Gene Mutation Affecting Splicing in an Ataxia-Telangiectasia Patient

2021 ◽  
pp. 1-5
Author(s):  
Esra Arslan Ateş ◽  
Ayberk Türkyılmaz ◽  
Sevgi Bilgiç Eltan ◽  
Safa Barış ◽  
Ahmet Ilter Güney
Keyword(s):  
Ataxia Telangiectasia ◽  
Autosomal Recessive ◽  
Novel Mutation ◽  
Autosomal Recessive Disorder ◽  
Acceptor Site ◽  
Nonsense Mediated Decay ◽  
Splicing Pattern ◽  
Progressive Ataxia ◽  
Nucleotide Insertion ◽  
Alternatively Spliced

Ataxia-telangiectasia (AT) is an autosomal recessive disorder characterized by progressive ataxia, choreoathetosis and immunodeficiency beginning in early childhood. An 8-year-old girl was referred with a diagnosis of AT. She had gait disturbance and dysarthria for 3years. Multiple cutaneous telangiectases were observed on her face, trunk and limbs. Sequence analysis of the <i>ATM</i> gene revealed a homozygous c.7308–15A&#x3e;G mutation in IVS49. Human Splicing Finder predicted that the mutation could activate an intronic cryptic acceptor site. We designed primers for amplification of related exons (48–50) from cDNA for evaluating splicing pattern. Sequencing of <i>ATM</i> exons 48–50 revealed a 14-nucleotide insertion from intron 49, between exons 49 and 50, resulting in premature termination of translation at codon 2439. To conclude, we report a novel mutation in a classical AT case, which resulted in an alternatively spliced transcript and was predicted to form a truncated protein or null protein due to nonsense-mediated decay.

Three Cases of Joubert Syndrome in a Consanguineous Syrian Family and a Interesting Case of Multinational Collaboration

2021 ◽  
Author(s):  
Davor Petrović ◽  
Vida Čulić ◽  
Zofia Swinderek-Alsayed
Keyword(s):  
Low Income ◽  
Autosomal Recessive ◽  
Autosomal Recessive Disorder ◽  
Joubert Syndrome ◽  
Interesting Case ◽  
Low Income Countries ◽  
Ocular Motor ◽  
Quality Health Care ◽  
Quality Health ◽  
Motor Apraxia

AbstractJoubert syndrome (JS) is a rare congenital, autosomal recessive disorder characterized by a distinctive brain malformation, developmental delay, ocular motor apraxia, breathing abnormalities, and high clinical and genetic heterogeneity. We are reporting three siblings with JS from consanguineous parents in Syria. Two of them had the same homozygous c.2172delA (p.Trp725Glyfs*) AHI1 mutation and the third was diagnosed prenatally with magnetic resonance imaging. This pathogenic variant is very rare and described in only a few cases in the literature. Multinational collaboration could be of benefit for the patients from undeveloped, low-income countries that have a low-quality health care system, especially for the diagnosis of rare diseases.

A Case of Congenital Glucose Galactose Malabsorption with a New Mutation in the SLC5A1 Gene

2020 ◽  
Author(s):  
Hasan Akduman ◽  
Dilek Dilli ◽  
Serdar Ceylaner
Keyword(s):  
Mutation Analysis ◽  
Autosomal Recessive ◽  
Glucose Transporter ◽  
Neonatal Period ◽  
Autosomal Recessive Disorder ◽  
Homozygous Mutation ◽  
New Mutation ◽  
Early Neonatal Period ◽  
Sodium Dependent ◽  
Hypernatremic Dehydration

AbstractCongenital glucose-galactose malabsorption (CGGM) is an autosomal recessive disorder originating from an abnormal transporter mechanism in the intestines. It was sourced from a mutation in the SLC5A1 gene, which encodes a sodium-dependent glucose transporter. Here we report a 2-day-old girl with CGGM who presented with severe hypernatremic dehydration due to diarrhea beginning in the first hours of life. Mutation analysis revealed a novel homozygous mutation NM_000343.3 c.127G > A (p.Gly43Arg) in the SLC5A1 gene. Since CGGM can cause fatal diarrhea in the early neonatal period, timely diagnosis of the disease seems to be essential.

Papillon-Lefevre Syndrome: Challenge for Periodontal Management

2019 ◽  
Vol 3 (2) ◽  
pp. 84-86
Author(s):  
Krishna Prasad Lamichhane ◽  
Shaili Pradhan ◽  
Ranjita Shreshta Gorkhali ◽  
Pramod Kumar Koirala
Keyword(s):  
Significant Role ◽  
Autosomal Recessive ◽  
Clinical Manifestations ◽  
Autosomal Recessive Disorder ◽  
Genetic Mutations ◽  
Rare Autosomal Recessive Disorder ◽  
Diagnosis And Management ◽  
Periodontal Destruction ◽  
Palmoplantar Keratosis

Papillon-Lefèvre syndrome (PLS) is a rare autosomal recessive disorder associated with rapidly progressing periodontitis leading to premature loss of deciduous and permanent dentition and diffuse palmoplantar keratosis. Immunologic alterations, genetic mutations, and role of bacteria are some aetiologic factors. Patients present with early periodontal destruction, so periodontists play a significant role in diagnosis and management. This paper reports a case of Papillon- Lefevre syndrome with its clinical manifestations and challenges for periodontal management which was diagnosed in dental department.

scholarly journals Periodontal Manifestations in a Patient with Haim-Munk Syndrome

2010 ◽  
Vol 04 (03) ◽  
pp. 338-340
Author(s):  
Kamile Erciyas ◽  
Serhat Inaloz ◽  
A. Fuat Erciyas
Keyword(s):  
Autosomal Recessive ◽  
Alveolar Bone ◽  
Bone Destruction ◽  
Autosomal Recessive Disorder ◽  
Aggressive Periodontitis ◽  
Pes Planus ◽  
Rare Autosomal Recessive Disorder ◽  
Rare Anomaly ◽  
Palmoplantar Hyperkeratosis

Haim-Munk syndrome is an extremely rare autosomal recessive disorder characterized clinically by palmoplantar hyperkeratosis, aggressive periodontitis with severe alveolar bone destruction, onychogryphosis, pes planus, arachnodactyly, and acro-osteolysis. Consanguinity seems a notable prerequisite. The aim of this study was therefore to report one case of this syndrome and to focus on the periodontal manifestations, in order to attract the attention of dental clinicians to this rare anomaly. (Eur J Dent 2010;4:338-340)

scholarly journals Cardiovascular involvement in alpha-n-acetyl neuraminidase deficiency syndromes (sialidosis type I and II)

2021 ◽  
pp. 1-3
Author(s):  
Priyanka Prasanna ◽  
Chenni S. Sriram ◽  
Sarah H. Rodriguez ◽  
Utkarsh Kohli
Keyword(s):  
Autosomal Recessive ◽  
Ventricular Dysfunction ◽  
Clinical Presentation ◽  
Clinical Course ◽  
Rare Condition ◽  
Autosomal Recessive Disorder ◽  
Left Ventricular ◽  
Type I ◽  
Neonatal Onset ◽  
Cardiovascular Involvement

Abstract Sialidosis, a rare autosomal recessive disorder, is caused by a deficiency of NEU1 encoded enzyme alpha-N-acetyl neuraminidase. We report a premature male with neonatal-onset type II sialidosis which was associated with left ventricular dysfunction. The clinical presentation and subsequent progression which culminated in his untimely death at 16 months of age are succinctly described. Early-onset cardiovascular involvement as noted in this patient is not well characterised. The case report is supplemented by a comprehensive review of the determinants, characteristics, and the clinical course of cardiovascular involvement in this rare condition.

Neuropathological Alzheimer’s Disease Lesions in Nasu-Hakola Disease with TREM2 Mutation: Atypical Distribution of Neurofibrillary Changes

2021 ◽  
Vol 79 (1) ◽  
pp. 25-30
Author(s):  
Emanuela Maderna ◽  
Silvia Visonà ◽  
Vittorio Bolcato ◽  
Veronica Redaelli ◽  
Paola Caroppo ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Autosomal Recessive ◽  
Cerebral Atrophy ◽  
Autosomal Recessive Disorder ◽  
Homozygous Mutation ◽  
Neurofibrillary Changes ◽  
Axonal Spheroids ◽  
Temporal Structures ◽  
Cortical Involvement

Nasu-Hakola disease is a rare autosomal recessive disorder associated to mutations in TREM2 and DAP12 genes, neuropathologically characterized by leukoencephalopathy with axonal spheroids. We report the neuropathologic findings of a 51-year-old female with a homozygous mutation (Q33X) of TREM2 gene. Beside severe cerebral atrophy and hallmarks of Nasu-Hakola disease, significant Alzheimer’s disease lesions were present. Neurofibrillary changes showed an atypical topographic distribution being severe at spots in the neocortex while sparing the mesial temporal structures. Our finding suggests that TREM2 genetic defects may favor Alzheimer’s disease pathology with neurofibrillary changes not following the hierarchical staging of cortical involvement identified by Braak.

scholarly journals McArdle disease and pregnancy: A case report and scoping review of pregnancy outcomes

2021 ◽  
pp. 1753495X2110161
Author(s):  
Christopher M Nash ◽  
Nabha Shetty ◽  
Ashley Miller ◽  
Kyle McCoy
Keyword(s):  
Scoping Review ◽  
Pregnancy Outcomes ◽  
Autosomal Recessive ◽  
Autosomal Recessive Disorder ◽  
Glycogen Metabolism ◽  
Limited Data ◽  
Genetic Condition ◽  
Second Stage ◽  
Mcardle Disease ◽  
Pregnancy And Delivery

McArdle disease is an autosomal recessive disorder affecting skeletal muscle glycogen metabolism. Limited data are available regarding pregnancy outcomes with this genetic condition. We present a recent case of a woman with McArdle disease, along with a scoping review of all published literature regarding pregnancy and delivery outcomes for women with McArdle disease. A total of 35 cases are summarised. Overall, pregnancy does not worsen or increase the risk for disease flare. Women can successfully deliver vaginally, with consideration of an assisted second stage recommended to reduce the risk of postpartum rhabdomyolysis.

scholarly journals Spondylocarpotarsal synostosis syndrome due to a novel loss of function FLNB variant: a case report

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Samina Yasin ◽  
Outi Makitie ◽  
Sadaf Naz
Keyword(s):  
Short Stature ◽  
Autosomal Recessive ◽  
Autosomal Recessive Disorder ◽  
Loss Of Function ◽  
Case Presentation ◽  
Pathogenic Variants ◽  
Skeletal Malformations ◽  
Tarsal Bones ◽  
The Family ◽  
Heterozygous Carriers

Abstract Background Loss of function or gain of function variants of Filamin B (FLNB) cause recessive or dominant skeletal disorders respectively. Spondylocarpotarsal synostosis syndrome (SCT) is a rare autosomal recessive disorder characterized by short stature, fused vertebrae and fusion of carpal and tarsal bones. We present a novel FLNB homozygous pathogenic variant and present a carrier of the variant with short height. Case presentation We describe a family with five patients affected with skeletal malformations, short stature and vertebral deformities. Exome sequencing revealed a novel homozygous frameshift variant c.2911dupG p.(Ala971GlyfsTer122) in FLNB, segregating with the phenotype in the family. The variant was absent in public databases and 100 ethnically matched control chromosomes. One of the heterozygous carriers of the variant had short stature. Conclusion Our report expands the genetic spectrum of FLNB pathogenic variants. It also indicates a need to assess the heights of other carriers of FLNB recessive variants to explore a possible role in idiopathic short stature.

scholarly journals Myophosphorylase deficiency (McArdle disease) in a patient with normal pregnancy and normal pregnancy outcome

2011 ◽  
Vol 4 (3) ◽  
pp. 120-121 ◽  
Author(s):  
Warwick Giles ◽  
Catherine Maher
Keyword(s):  
Skeletal Muscles ◽  
Autosomal Recessive ◽  
Autosomal Recessive Disorder ◽  
Normal Pregnancy ◽  
Significant Rise ◽  
Women Of Childbearing Age ◽  
Childbearing Age ◽  
Fetal Head ◽  
Mcardle Disease ◽  
Exercise Induced

McArdle disease is a rare, mostly autosomal recessive disorder of deficient myophosphorylation of glycogen in skeletal muscles. Recent knowledge regarding this condition means that women of childbearing age with McArdle disease can expect to labour normally without ill effect. We report a case of a 30-year-old woman in her first pregnancy who had an episode of exercise-induced myoglobinuria with a significant rise in serum creatine kinase (CK) levels in early pregnancy who then laboured normally but did require a caesarean section for a malposition of the fetal head.

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