Read by QxMD icon Read

Hereditary spastic paraplegia

Gianina Ravenscroft, Nataliya Di Donato, Gabriele Hahn, Mark R Davis, Paul D Craven, Gemma Poke, Katherine R Neas, Teresa M Neuhann, William B Dobyns, Nigel G Laing
Autosomal dominantly inherited mutations of BICD2 are associated with congenital-onset spinal muscular atrophy characterised by lower limb predominance. A few cases have also showed upper motor neuron pathology, including presenting with features resembling hereditary spastic paraplegia. The age-of-onset for the published families is usually at birth but also included cases with childhood- and adult-onset disease. In this report we described two isolated probands that presented in utero with features associated with reduced fetal movements...
September 19, 2016: Neuromuscular Disorders: NMD
Thomas Musacchio, Ann-Kathrin Zaum, Nurcan Üçeyler, Claudia Sommer, Nora Pfeifroth, Karlheinz Reiners, Erdmute Kunstmann, Jens Volkmann, Simone Rost, Stephan Klebe
Silver syndrome/SPG17 is a motor manifestation of mutations in the BSCL2 gene and usually presents as a complicated form of hereditary spastic paraplegia (HSP). We present clinical data, follow-up, and genetic results of seven patients with Silver syndrome/SPG17 including a family with a variable intrafamilial phenotype ranging from subclinical signs to a severe and rapidly progressing amyotrophic lateral sclerosis (ALS)-like phenotype. For molecular diagnosis of the family, we used the TruSight Exome sequencing panel consisting of 2761 genes...
October 13, 2016: Journal of Neurology
Marina Diomedi, Ziv Gan-Or, Fabio Placidi, Patrick A Dion, Anna Szuto, Mario Bengala, Guy A Rouleau, Gian Luigi Gigli
Glucose transporter 1 (GLUT1) deficiency syndrome (GLUT1DS) was initially described in the early 90s as a sporadic clinical condition, characterized by seizures, motor and intellectual impairment with variable clinical presentation, and without a known genetic cause. Although causative mutations in SLC2A1 were later identified and much more is known about the disease, it still remains largely underdiagnosed. In the current study, a previously described Italian family was re-analyzed using whole exome sequencing and clinically re-evaluated...
October 7, 2016: European Journal of Medical Genetics
Ludivine Chamard, Sabrina Ferreira, Alexa Pijoff, Manon Silvestre, Eric Berger, Eloi Magnin
Objectives. To describe cognitive assessment including social cognition in SPG4 patients. Methods. We reported a series of nine patients with SPG4 mutation with an extensive neuropsychological examination including social cognition assessment. Results. None of our patients presented with mental retardation or dementia. All presented with mild cognitive impairment with a high frequency of attention deficit (100%), executive disorders (89%), and social cognition impairment (78%). An asymptomatic patient for motor skills presented with the same cognitive profile...
2016: Behavioural Neurology
Kishore R Kumar, G M Wali, Mahesh Kamate, Gautam Wali, André E Minoche, Clare Puttick, Mark Pinese, Velimir Gayevskiy, Marcel E Dinger, Tony Roscioli, Carolyn M Sue, Mark J Cowley
We performed whole genome sequencing (WGS) in nine families from India with early-onset hereditary spastic paraplegia (HSP). We obtained a genetic diagnosis in 4/9 (44 %) families within known HSP genes (DDHD2 and CYP2U1), as well as perixosomal biogenesis disorders (PEX16) and GM1 gangliosidosis (GLB1). In the remaining patients, no candidate structural variants, copy number variants or predicted splice variants affecting an extended candidate gene list were identified. Our findings demonstrate the efficacy of using WGS for diagnosing early-onset HSP, particularly in consanguineous families (4/6 diagnosed), highlighting that two of the diagnoses would not have been made using a targeted approach...
October 2016: Neurogenetics
Jean-Philippe Ehny, Yoshimasa Sagawa, Laurent Tatu, Ludivine Chamard, Bernard Parratte, Pierre Decavel
OBJECTIVE: Hereditary spastic paraplegia (HSP) designates a rare genetic disorder characterized by the existence of a pyramidal syndrome and/or paresis of the lower limbs, resulting in locomotor disorders. The objective of this study was to investigate the HSP patients walking characteristics during a comfortable walking speed, to determinate the most deleterious impairments and their evolutivity during a prolonged standardized walk. A second goal was to study the co-contraction of targeted muscles during these two walking conditions...
September 2016: Annals of Physical and Rehabilitation Medicine
Charles Joussain, Jonathan Levy, Audrey Charlanes, Alexia Even, Laetitia Falcou, Emmanuel Chartier-Kastler, Pierre Denys
OBJECTIVE: Hereditary spastic paraplegia (HSP) represents a clinically and genetically heterogeneous group of neurodegenerative diseases, with a worldwide estimated prevalence of 1.3/100,000 [1]. The "pure" form of HSP is a characterized by a progressive spastic paraplegia, often associated with lower urinary tract symptoms (LUTS) (72.4% to 77.6%) [2,3]. However, urologic complications are rarely reported. The aim of this study was to characterize clinical and urodynamic aspects of LUTS following HSP, and to describe treatment and urological complications of LUTS in a large series of HSP patients...
September 2016: Annals of Physical and Rehabilitation Medicine
Guohua Zhao, Peng-Peng Zhu, Benoît Renvoisé, Lymarie Maldonado-Báez, Seong Hee Park, Craig Blackstone
Atlastins are large, membrane-bound GTPases that participate in the fusion of endoplasmic reticulum (ER) tubules to generate the polygonal ER network in eukaryotes. They also regulate lipid droplet size and inhibit bone morphogenetic protein (BMP) signaling, though mechanisms remain unclear. Humans have three atlastins (ATL1, ATL2, and ATL3), and ATL1 and ATL3 are mutated in autosomal dominant hereditary spastic paraplegia and hereditary sensory neuropathies. Cellular investigations of atlastin orthologs in most yeast, plants, flies and worms are facilitated by the presence of a single or predominant isoform, but loss-of-function studies in mammalian cells are complicated by multiple, broadly-expressed paralogs...
September 23, 2016: Experimental Cell Research
Tim König, Simon E Tröder, Kavya Bakka, Anne Korwitz, Ricarda Richter-Dennerlein, Philipp A Lampe, Maria Patron, Mareike Mühlmeister, Sergio Guerrero-Castillo, Ulrich Brandt, Thorsten Decker, Ines Lauria, Angela Paggio, Rosario Rizzuto, Elena I Rugarli, Diego De Stefani, Thomas Langer
Mutations in subunits of mitochondrial m-AAA proteases in the inner membrane cause neurodegeneration in spinocerebellar ataxia (SCA28) and hereditary spastic paraplegia (HSP7). m-AAA proteases preserve mitochondrial proteostasis, mitochondrial morphology, and efficient OXPHOS activity, but the cause for neuronal loss in disease is unknown. We have determined the neuronal interactome of m-AAA proteases in mice and identified a complex with C2ORF47 (termed MAIP1), which counteracts cell death by regulating the assembly of the mitochondrial Ca(2+) uniporter MCU...
October 6, 2016: Molecular Cell
Benoît Renvoisé, Brianna Malone, Melanie Falgairolle, Jeeva Munasinghe, Julia Stadler, Caroline Sibilla, Seong H Park, Craig Blackstone
Hereditary spastic paraplegias (HSPs; SPG1-76 plus others) are length-dependent disorders affecting long corticospinal axons, and the most common autosomal dominant forms are caused by mutations in genes that encode the spastin (SPG4), atlastin-1 (SPG3A), and REEP1 (SPG31) proteins. These proteins bind one another and shape the tubular endoplasmic reticulum (ER) network throughout cells. They also are involved in lipid droplet formation, enlargement, or both in cells, though mechanisms remain unclear. Here we have identified evidence of partial lipoatrophy in Reep1 null mice in addition to prominent spastic paraparesis...
September 16, 2016: Human Molecular Genetics
Jennifer Hirst, Marianna Madeo, Katrien Smets, James R Edgar, Ludger Schols, Jun Li, Anna Yarrow, Tine Deconinck, Jonathan Baets, Elisabeth Van Aken, Jan De Bleecker, Manuel B Datiles, Ricardo H Roda, Joachim Liepert, Stephan Züchner, Caterina Mariotti, Peter De Jonghe, Craig Blackstone, Michael C Kruer
OBJECTIVE: Biallelic mutations in the AP5Z1 gene encoding the AP-5 ζ subunit have been described in a small number of patients with hereditary spastic paraplegia (HSP) (SPG48); we sought to define genotype-phenotype correlations in patients with homozygous or compound heterozygous sequence variants predicted to be deleterious. METHODS: We performed clinical, radiologic, and pathologic studies in 6 patients with biallelic mutations in AP5Z1. RESULTS: In 4 of the 6 patients, there was complete loss of AP-5 ζ protein...
October 2016: Neurology. Genetics
Kavitha Rao, Michelle C Stone, Alexis T Weiner, Kyle W Gheres, Chaoming Zhou, David L Deitcher, Edwin S Levitan, Melissa M Rolls
Mutations in over 50 genes including spastin and atlastin lead to Hereditary Spastic Paraplegia (HSP). We previously demonstrated that reduction of spastin leads to a deficit in axon regeneration in a Drosophila model. Axon regeneration was similarly impaired in neurons when HSP proteins atlastin, seipin and spichthyin were reduced. Impaired regeneration was dependent on genetic background, and was observed when partial reduction of HSP proteins was combined with expression of dominant-negative microtubule regulators, suggesting HSP proteins work with microtubules to promote regeneration...
September 7, 2016: Molecular Biology of the Cell
Liena E O Elsayed, Inaam N Mohammed, Ahlam A A Hamed, Maha A Elseed, Adam Johnson, Mathilde Mairey, Hassab Elrasoul S A Mohamed, Mohamed N Idris, Mustafa A M Salih, Sarah M El-Sadig, Mahmoud E Koko, Ashraf Y O Mohamed, Laure Raymond, Marie Coutelier, Frédéric Darios, Rayan A Siddig, Ahmed K M A Ahmed, Arwa M A Babai, Hiba M O Malik, Zulfa M B M Omer, Eman O E Mohamed, Hanan B Eltahir, Nasr Aldin A Magboul, Elfatih E Bushara, Abdelrahman Elnour, Salah M Abdel Rahim, Abdelmoneim Alattaya, Mustafa I Elbashir, Muntaser E Ibrahim, Alexandra Durr, Anjon Audhya, Alexis Brice, Ammar E Ahmed, Giovanni Stevanin
Hereditary spastic paraplegias (HSP) are the second most common type of motor neuron disease recognized worldwide. We investigated a total of 25 consanguineous families from Sudan. We used next-generation sequencing to screen 74 HSP-related genes in 23 families. Linkage analysis and candidate gene sequencing was performed in two other families. We established a genetic diagnosis in six families with autosomal recessive HSP (SPG11 in three families and TFG/SPG57, SACS and ALS2 in one family each). A heterozygous mutation in a gene involved in an autosomal dominant HSP (ATL1/SPG3A) was also identified in one additional family...
September 7, 2016: European Journal of Human Genetics: EJHG
Andreea Manole, Viorica Chelban, Nourelhoda A Haridy, Sherifa A Hamed, Andrés Berardo, Mary M Reilly, Henry Houlden
Complex hereditary spastic paraplegia (HSP) is a clinically heterogeneous group of disorders usually inherited in an autosomal recessive manner. In the past, complex recessive spastic paraplegias have been frequently associated with SPG11 mutations but also with defects in SPG15, SPG7 and a handful of other rare genes. Pleiotropy exists in HSP genes, exemplified in the recent association of SPG11 mutations with CMT2. In this study, we performed whole exome sequence analysis and identified two siblings with novel compound heterozygous frameshift SPG11 mutations...
November 2016: Journal of Neurology
Katherine L Helbig, Ulrike B S Hedrich, Deepali N Shinde, Ilona Krey, Anne-Christin Teichmann, Julia Hentschel, Julian Schubert, Adam C Chamberlin, Robert Huether, Hsiao-Mei Lu, Wendy A Alcaraz, Sha Tang, Chelsy Jungbluth, Sarah L Dugan, Leena Vainionpää, Kathrin N Karle, Matthis Synofzik, Ludger Schöls, Rebecca Schüle, Anna-Elina Lehesjoki, Ingo Helbig, Holger Lerche, Johannes R Lemke
The hereditary spastic paraplegias (HSPs) are heterogeneous neurodegenerative disorders with over 50 known causative genes. We identified a recurrent mutation in KCNA2 (c.881G>A, p.R294H), encoding the voltage-gated K(+) -channel, KV 1.2, in two unrelated families with HSP, intellectual disability (ID), and ataxia. Follow-up analysis of > 2,000 patients with various neurological phenotypes identified a de novo p.R294H mutation in a proband with ataxia and ID. Two-electrode voltage-clamp recordings of Xenopus laevis oocytes expressing mutant KV 1...
October 2016: Annals of Neurology
Ronen Spiegel, Devorah Soiferman, Avraham Shaag, Stavit Shalev, Orly Elpeleg, Ann Saada
Troyer syndrome is an autosomal recessive form of hereditary spastic paraplegia (HSP) caused by deleterious mutations in the SPG20 gene. Although the disease is associated with a loss of function mechanism of spartin, the protein encoded by SPG20, the precise pathogenesis is yet to be elucidated. Recent data indicated an important role for spartin in both mitochondrial maintenance and function. Here we report a child presenting with progressive spastic paraparesis, generalized muscle weakness, dysarthria, impaired growth, and severe isolated decrease in muscle cytochrome c oxidase (COX) activity...
August 19, 2016: JIMD Reports
Felipe J Bodaleo, Christian Gonzalez-Billault
The capacity of the nervous system to generate neuronal networks relies on the establishment and maintenance of synaptic contacts. Synapses are composed of functionally different presynaptic and postsynaptic compartments. An appropriate synaptic architecture is required to provide the structural basis that supports synaptic transmission, a process involving changes in cytoskeletal dynamics. Actin microfilaments are the main cytoskeletal components present at both presynaptic and postsynaptic terminals in glutamatergic synapses...
2016: Frontiers in Molecular Neuroscience
Gaurav V Harlalka, Meriel E McEntagart, Neerja Gupta, Anna E Skrzypiec, Mariusz W Mucha, Barry A Chioza, Michael A Simpson, Ajith Sreekantan-Nair, Anthony Pereira, Sven Günther, Amir Jahic, Hamid Modarres, Heather Moore-Barton, Richard C Trembath, Madhulika Kabra, Emma L Baple, Seema Thakur, Michael A Patton, Christian Beetz, Robert Pawlak, Andrew H Crosby
Hereditary spastic paraplegias (HSPs) are genetically and clinically heterogeneous axonopathies primarily affecting upper motor neurons and, in complex forms, additional neurons. Here, we report two families with distinct recessive mutations in TFG, previously suggested to cause HSP based on findings in a single small family with complex HSP. The first carried a homozygous c.317G>A (p.R106H) variant and presented with pure HSP. The second carried the same homozygous c.316C>T (p.R106C) variant previously reported and displayed a similarly complex phenotype including optic atrophy...
November 2016: Human Mutation
Robert A Kozol, Alexander J Abrams, David M James, Elena Buglo, Qing Yan, Julia E Dallman
Zebrafish are a unique cell to behavior model for studying the basic biology of human inherited neurological conditions. Conserved vertebrate genetics and optical transparency provide in vivo access to the developing nervous system as well as high-throughput approaches for drug screens. Here we review zebrafish modeling for two broad groups of inherited conditions that each share genetic and molecular pathways and overlap phenotypically: neurodevelopmental disorders such as Autism Spectrum Disorders (ASD), Intellectual Disability (ID) and Schizophrenia (SCZ), and neurodegenerative diseases, such as Cerebellar Ataxia (CATX), Hereditary Spastic Paraplegia (HSP) and Charcot-Marie Tooth Disease (CMT)...
2016: Frontiers in Molecular Neuroscience
A Tessa, R Battini, A Rubegni, E Storti, C Marini, D Galatolo, R Pasquariello, F M Santorelli
BACKGROUND AND PURPOSE: The term hereditary spastic paraplegia (HSP) covers a spectrum of genetically heterogeneous disorders in which lower limb spasticity is the common clinical feature. Many patients with childhood-onset HSP are mistakenly diagnosed with cerebral palsy (CP). METHODS: A group of as yet molecularly undiagnosed HSP patients were analyzed using SpastoPlex, a customized target re-sequencing panel able to investigate the coding regions of 72 genes linked to HSP, spastic ataxias or related motor diseases...
October 2016: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"