Properties of extensor digitorum longus muscle and skinned fibers from adult and aged male and female Actn3 knockout mice.

Abstract:

:Absence of α-actinin-3, encoded by the ACTN3 "speed gene," is associated with poorer sprinting performance in athletes and a slowing of relaxation in fast-twitch muscles of Actn3 knockout (KO) mice. Our first aim was to investigate, at the individual-fiber level, possible mechanisms for this slowed relaxation. Our second aim was to characterize the contractile properties of whole extensor digitorum longus (EDL) muscles from KO mice by age and gender. We examined caffeine-induced Ca(2+) release in mechanically skinned EDL fibers from KO mice, and measured isolated whole EDL contractile properties. The sarcoplasmic reticulum of KO muscle fibers loaded Ca(2+) more slowly than that of wild-types (WTs). Whole KO EDL muscles had longer twitch and tetanus relaxation times than WTs, and reduced mass and cross-sectional area. These effects occurred in both male and female mice, but they diminished with age. These changes in KO muscles and fibers help to explain the effects of α-actinin-3 deficiency observed in athletes.

journal_name

Muscle Nerve

journal_title

Muscle & nerve

authors

Chan S,Seto JT,Houweling PJ,Yang N,North KN,Head SI

doi

10.1002/mus.21778

subject

Has Abstract

pub_date

2011-01-01 00:00:00

pages

37-48

issue

1

eissn

0148-639X

issn

1097-4598

journal_volume

43

pub_type

杂志文章
  • Cytoplasmic body myopathy masquerading as motor neuron disease.

    abstract::Cytoplasmic body myopathy (CBM) is characterized by proteinaceous inclusion bodies in muscle tissue. A 43-year-old woman presented with rapidly progressive weakness and dysphagia. Electromyography (EMG) elsewhere demonstrated lower-limb chronic partial denervation. Muscle biopsy showed fiber size variation without dia...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.20115

    authors: Krishnan AV,Pamphlett R,Burke D,Wills EJ,Kiernan MC

    更新日期:2004-11-01 00:00:00

  • Dysmorphic neuromuscular junctions associated with motor ability in cerebral palsy.

    abstract::Cerebral palsy (CP) is the most prevalent neurologic disease in children and a leading cause of severe physical disability. Research and clinical experience indicate that children with CP have abnormal neuromuscular junctions (NMJs), and we present evidence that nonapposition of neuromuscular junction components is as...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.20401

    authors: Theroux MC,Oberman KG,Lahaye J,Boyce BA,Duhadaway D,Miller F,Akins RE

    更新日期:2005-11-01 00:00:00

  • Sodium withdrawal contractures in developing and regenerating rat extensor digitorum longus muscles.

    abstract::During postnatal development of extensor digitorum longus (EDL) muscle, sodium withdrawal contractures were observed during the first 6 days after birth, and not after this time. In regenerating EDL muscles, zero-Na contractures were demonstrated: (1) 7 days after bupivacaine injection, but not 14 or 90 days after thi...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/(sici)1097-4598(199811)21:11<1530::aid-mus

    authors: Louboutin JP,Noireaud J

    更新日期:1998-11-01 00:00:00

  • Risk of thrombotic events after inpatient intravenous immunoglobulin or plasma exchange for neurologic disease: A case-crossover study.

    abstract:INTRODUCTION:Our aim in this study was to determine whether intravenous immunoglobulin (IVIg) or plasma exchange (PLEx) for treatment of neurologic disease is a trigger for thrombotic events. METHODS:Using administrative data from 2005 to 2014, we identified index admissions for thrombotic events. We performed case-cr...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.26884

    authors: Jin PH,Shin SC,Dhamoon MS

    更新日期:2020-09-01 00:00:00

  • Myositis with antimitochondrial antibodies diagnosed by rectus abdominis muscle biopsy.

    abstract:INTRODUCTION:Antimitochondrial antibodies are autoantibodies detected in 90% of primary biliary cirrhosis (PBC) patients. Some PBC cases are complicated by myositis, which is difficult to confirm due to minimal histological evidence of inflammation in limb muscles. METHODS:Our aim was to determine the extent of inflam...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.23730

    authors: Uenaka T,Kowa H,Sekiguchi K,Nagata K,Ohtsuka Y,Kanda F,Toda T

    更新日期:2013-05-01 00:00:00

  • Prolonged erythropoietin treatment does not impact gene expression in human skeletal muscle.

    abstract:INTRODUCTION:We tested for the presence of erythropoietin receptor (Epo-R) in human skeletal muscle and alterations in gene expression after prolonged use of an erythropoiesis-stimulating agent (ESA). METHODS:Nine healthy men were treated with ESA for 10 weeks (darbepoietin alfa). Muscle biopsies were collected before...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.24355

    authors: Christensen B,Nellemann B,Thorsen K,Nielsen MM,Pedersen SB,Ornstrup MJ,JØrgensen JO,Jessen N

    更新日期:2015-04-01 00:00:00

  • Hexosaminidase A activity and amyotrophic lateral sclerosis.

    abstract::Abnormalities of GM2 ganglioside metabolism owing to hexosaminidase A (Hex A) deficiency have been associated with ALS phenotypes. The clinical features described in these ALS patients with Hex A deficiency include early onset, positive family history, and/or long disease duration. In an attempt to determine prospecti...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.880110307

    authors: Gudesblatt M,Ludman MD,Cohen JA,Desnick RJ,Chester S,Grabowski GA,Caroscio JT

    更新日期:1988-03-01 00:00:00

  • Prospective comparison of acute motor axonal neuropathy and acute inflammatory demyelinating polyradiculoneuropathy in 140 children with Guillain-Barré syndrome in India.

    abstract:INTRODUCTION:There have been few reports on subtypes of Guillain-Barré syndrome (GBS) in children. We compared clinical and laboratory findings of acute inflammatory demyelinating polyradiculoneuropathy (AIDP) and acute motor axonal neuropathy (AMAN). METHODS:One hundred forty children with GBS were included. Based on...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.25992

    authors: Kalita J,Kumar M,Misra UK

    更新日期:2018-05-01 00:00:00

  • Helix-loop-helix transcription factors in electrically active and inactive skeletal muscles.

    abstract::The muscle-specific helix-loop-helix (HLH) transcription factors myoD, myogenin, MRF4, and myf-5 are called the muscle regulatory factor family (MRF). Levels of MRFs are strongly regulated by muscle electrical activity and are thought to control downstream genes that are important for muscle phenotype such as the acet...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/1097-4598(200009)23:9<1374::aid-mus8>3.0.c

    authors: Carlsen H,Gundersen K

    更新日期:2000-09-01 00:00:00

  • Clinical and genetic description of a family with Charcot-Marie-Tooth disease type 1B from a transmembrane MPZ mutation.

    abstract::Mutations in the myelin protein zero gene (MPZ) are associated with certain demyelinating neuropathies, and in particular with Charcot-Marie-Tooth disease type 1B (CMT1B), Dejerine-Sottas syndrome, and congenital hypomyelination. MPZ mutations affecting the protein's transmembrane domain are generally associated with ...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.20034

    authors: Eggers SD,Keswani SC,Melli G,Cornblath DR

    更新日期:2004-06-01 00:00:00

  • Thymectomy may not be associated with clinical improvement in MuSK myasthenia gravis.

    abstract:INTRODUCTION:A randomized trial demonstrated benefit from thymectomy in nonthymomatous acetylcholine receptor (AChR)-antibody positive myasthenia gravis (MG). Uncontrolled observational and histologic studies suggest thymectomy may not be efficacious in anti-muscle-specific kinase (MuSK)-MG. METHODS:The therapeutic im...

    journal_title:Muscle & nerve

    pub_type: 杂志文章,多中心研究

    doi:10.1002/mus.26404

    authors: Clifford KM,Hobson-Webb LD,Benatar M,Burns TM,Barnett C,Silvestri NJ,Howard JF Jr,Visser A,Crum BA,Nowak R,Beekman R,Kumar A,Ruzhansky K,Chen IA,Pulley MT,Laboy SM,Fellman MA,Howard DB,Kolb NA,Greene SM,Pasnoor M

    更新日期:2019-04-01 00:00:00

  • Within-train neuromuscular propagation varies with torque in paralyzed human muscle.

    abstract::Electromyographic (EMG) recordings may serve an important role in predicting torque during repetitive activation of paralyzed muscle. We compared the initial M-wave to the subsequent M-waves of the same train under fatigued and recovered conditions in the paralyzed human soleus muscle. Sixteen individuals with chronic...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.10245

    authors: Chang YJ,Shields RK

    更新日期:2002-11-01 00:00:00

  • A reliable technique for ultrasound-guided perineural injection in ulnar neuropathy at the elbow.

    abstract:INTRODUCTION:Ulnar neuropathy at the elbow (UNE) is a common peripheral compression neuropathy and, in most cases, occurs at 2 sites, the retroepicondylar groove or the cubital tunnel. With regard to a potential therapeutic approach with perineural corticosteroid injection, the aim of this study was to evaluate the dis...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.25490

    authors: Hamscha UM,Tinhofer I,Heber S,Grisold W,Weninger WJ,Meng S

    更新日期:2017-08-01 00:00:00

  • Upper limb predominant, multifocal chronic inflammatory demyelinating polyneuropathy.

    abstract::Chronic inflammatory demyelinating polyneuropathy (CIDP) presents in rare instances with focal or multifocal upper limb involvement. We reviewed the clinical and electromyographic (EMG) characteristics of 10 such patients (UL-CIDP) and compared them with patients with typical generalized CIDP (G-CIDP) and multifocal m...

    journal_title:Muscle & nerve

    pub_type: 临床试验,杂志文章

    doi:10.1002/(sici)1097-4598(199906)22:6<758::aid-mus13

    authors: Gorson KC,Ropper AH,Weinberg DH

    更新日期:1999-06-01 00:00:00

  • COVID-19-associated Guillain-Barré syndrome: The early pandemic experience.

    abstract::Guillain-Barré syndrome (GBS) is an inflammatory polyradiculoneuropathy associated with numerous viral infections. Recently, there have been many case reports describing the association between coronavirus disease-2019 (COVID-19) and GBS, but much remains unknown about the strength of the association and the features ...

    journal_title:Muscle & nerve

    pub_type: 杂志文章,评审

    doi:10.1002/mus.27024

    authors: Caress JB,Castoro RJ,Simmons Z,Scelsa SN,Lewis RA,Ahlawat A,Narayanaswami P

    更新日期:2020-10-01 00:00:00

  • Survival prediction in amyotrophic lateral sclerosis.

    abstract::This longitudinal study of 194 patients with sporadic ALS demonstrated that it is possible for physicians to predict the approximate survival time for an individual ALS patient given: (1) the age of the patient, (2) the duration of his weakness and (3) an estimate of his clinical disability (ALS Score). This informati...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.880121008

    authors: Jablecki CK,Berry C,Leach J

    更新日期:1989-10-01 00:00:00

  • Cytokines and the pathogenesis of myasthenia gravis.

    abstract::Myasthenia gravis (MG) and its animal model experimental autoimmune myasthenia gravis (EAMG) are caused by autoantibodies against nicotinic acetylcholine receptor (AChR) in skeletal muscle. The production of anti-AChR antibodies is mediated by cytokines produced by CD4+ and CD8+ T helper (Th) cells. Emerging investiga...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/(sici)1097-4598(199705)20:5<543::aid-mus2>

    authors: Zhang GX,Navikas V,Link H

    更新日期:1997-05-01 00:00:00

  • Detecting fasciculations in cranial nerve innervated muscles with ultrasound in amyotrophic lateral sclerosis.

    abstract:INTRODUCTION:Cranial muscle fasciculations may be difficult to detect in amyotrophic lateral sclerosis (ALS). Ultrasound (US) detection of fasciculations in these muscles may have clinical utility. METHODS:Patients with suspected ALS were prospectively enrolled. Nerve conduction studies, needle electromyography (EMG),...

    journal_title:Muscle & nerve

    pub_type: 杂志文章,多中心研究

    doi:10.1002/mus.25676

    authors: O'gorman CM,Weikamp JG,Baria M,Van Den Engel-Hoek L,Kassardjian C,Van Alfen N,Boon AJ

    更新日期:2017-12-01 00:00:00

  • Myogenesis in human denervated muscle biopsies.

    abstract::Electron microscopic studies of long-term denervated rat muscles have identified very small, immature myofibers that are believed to arise from detached satellite cells that have fused to form new fibers within the interstitial space. At present, it is unknown whether and to what extent equivalent fibers exist in dene...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.20902

    authors: Doppler K,Mittelbronn M,Bornemann A

    更新日期:2008-01-01 00:00:00

  • Muscle carnitine in hypo- and hyperthyroidism.

    abstract::Weakness is common in both hyper- and hypothyroidism, and skeletal muscle L-carnitine may play a role in this regard, as suggested by studies indicating abnormal levels of carnitine in serum and urine of patients with thyroid dysfunction. Skeletal muscle samples were obtained for carnitine analysis from control subjec...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.20336

    authors: Sinclair C,Gilchrist JM,Hennessey JV,Kandula M

    更新日期:2005-09-01 00:00:00

  • Comparison of neuromuscular blockade and recovery with botulinum toxins A and F.

    abstract::Intramuscular injection of botulinum toxin A is used to treat focal dystonias. Because immunoresistance has been documented in some patients, other molecular forms of the toxin have been evaluated clinically. The present investigation compared the time course and extent of neuromuscular blockade and recovery of botuli...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.10213

    authors: Billante CR,Zealear DL,Billante M,Reyes JH,Sant'Anna G,Rodriguez R,Stone RE Jr

    更新日期:2002-09-01 00:00:00

  • Effects of hemodialysis on intraneural blood flow in end-stage kidney disease.

    abstract:INTRODUCTION:We quantified intraneural blood flow (INBF) in 18 patients with end-stage kidney disease (ESKD) and examined its relationship with nerve size, neuropathy severity, and nerve excitability parameters. METHODS:Sonographic measurements of the median nerve were performed at the same site before and after hemod...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.25704

    authors: Borire AA,Arnold R,Pussell BA,Kwai NC,Visser LH,Simon NG,Kiernan MC,Krishnan AV

    更新日期:2018-02-01 00:00:00

  • Posterior femoral cutaneous neuralgia.

    abstract::A middle-aged male developed a right posterior femoral cutaneous neuralgia that persisted for 10 years without any associated neurologic, electrophysiologic, or radiologic findings. Five years after onset, surgical exploration of the subgluteal area identified a venous malformation surrounding the nerve. The syndrome ...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.880111106

    authors: Chutkow JG

    更新日期:1988-11-01 00:00:00

  • Homonymous and heteronymous monosynaptic reflexes in biceps brachii.

    abstract::Using poststimulus time histograms, it has been reported that stimulation of the median nerve at the elbow produces a monosynaptic EPSP in voluntarily active single motoneurons of the human biceps brachii. The present study was undertaken to: (i) determine whether such stimulation could evoke a reproducible reflex res...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.880180604

    authors: Miller TA,Mogyoros I,Burke D

    更新日期:1995-06-01 00:00:00

  • The relation between conduction velocity and axonal length.

    abstract::Motor evoked potentials (MEPs) obtained by electrical root stimulation and F waves were used to examine the proximal nerve conduction velocity (CV) to tibialis anterior (TA), extensor digitorum brevis (EDB), flexor carpi radialis (FCR), and abductor pollicis brevis (APB) muscles in 40 humans. By subtracting motor late...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.880181105

    authors: Zwarts MJ,Guechev A

    更新日期:1995-11-01 00:00:00

  • Doxorubicin causes diaphragm weakness in murine models of cancer chemotherapy.

    abstract::Doxorubicin is a chemotherapeutic agent prescribed for a variety of tumors. While undergoing treatment, patients exhibit frequent symptoms that suggest respiratory muscle weakness. Cancer patients can receive doxorubicin chemotherapy through either intravenous (IV) or intraperitoneal (IP) injections. We hypothesized t...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.21809

    authors: Gilliam LA,Moylan JS,Callahan LA,Sumandea MP,Reid MB

    更新日期:2011-01-01 00:00:00

  • Consideration of repetitive nerve stimulation of the median nerve in patients being evaluated for myasthenia gravis.

    abstract::Repetitive nerve stimulation (RNS) of the median nerve is rarely studied in myasthenia gravis (MG). We performed a retrospective analysis of RNS studies performed on 448 patients at our center between 2010 and 2016. Among 95 patients with MG, an abnormal decrement of the compound muscle action potential amplitude was ...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.26713

    authors: Lee TH,Li Y

    更新日期:2019-12-01 00:00:00

  • Ocular neuropathy in peripheral neuropathies.

    abstract::Ocular movements and coordination require complex and integrated functions of somatic and autonomic nervous systems. Neurological disorders affecting these nervous systems may cause ocular dysfunction involving extraocular muscles and pupils. In this article, the prevalence, clinical presentations, and management of o...

    journal_title:Muscle & nerve

    pub_type: 杂志文章,评审

    doi:10.1002/mus.23414

    authors: Evliyaoglu F,Karadag R,Burakgazi AZ

    更新日期:2012-11-01 00:00:00

  • Analysis of youtube as a source of information for peripheral neuropathy.

    abstract:INTRODUCTION:YouTube is an important resource for patients. No study has evaluated the information on peripheral neuropathy disseminated by YouTube videos. In this study, our aim was to perform a systematic review of information on YouTube regarding peripheral neuropathy. METHODS:The Web site (www.youtube.com) was sea...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.24916

    authors: Gupta HV,Lee RW,Raina SK,Behrle BL,Hinduja A,Mittal MK

    更新日期:2016-01-01 00:00:00

  • Hibernation induction trigger reduces hypoxic damage of swine skeletal muscle.

    abstract::A link between the cardioprotective benefits of pharmacological preconditioning and natural mammalian hibernation is considered to involve the cellular activation of opioid receptors and subsequent opening of K(ATP) channels. In previous studies, we have demonstrated the protective effects of specific delta-opioid ago...

    journal_title:Muscle & nerve

    pub_type: 杂志文章

    doi:10.1002/mus.20354

    authors: Hong J,Sigg DC,Coles JA Jr,Oeltgen PR,Harlow HJ,Soule CL,Iaizzo PA

    更新日期:2005-08-01 00:00:00