Motor neuron disease is a neurodegenerative disease characterized by loss of upper motor neuron in the motor cortex and lower motor neurons in the brain stem and spinal cord. Death occurs 2–4 years after the onset of the disease. A complex interplay of cellular processes such as mitochondrial dysfunction, oxidative stress, excitotoxicity, and impaired axonal transport are proposed pathogenetic processes underlying neuronal cell loss. Currently evidence exists for the use of riluzole as a disease modifying drug; multidisciplinary team care approach to patient management; noninvasive ventilation for respiratory management; botulinum toxin B for sialorrhoea treatment; palliative care throughout the course of the disease; and Modafinil use for fatigue treatment. Further research is needed in management of dysphagia, bronchial secretion, pseudobulbar affect, spasticity, cramps, insomnia, cognitive impairment, and communication in motor neuron disease. 1. Background Motor neuron disease (MND) also referred to as amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative condition with an annual incidence of about 1.5 per 100,000 [1] and a United Kingdom (UK) prevalence of 4–6/100,000 [2]. There is a slight male preponderance with a male to female ratio of 3?:?2. It could occur at any age but the peak age of occurrence is between 50 and 75 years [3]. Multiple genetic and environmental factors interact resulting in loss of the upper motor neuron in the motor cortex and the lower motor neurons cell bodies in the brain stem and spinal cord [4, 5]. Pattern of onset could be spinal, truncal, or bulbar. The clinical features of MND include limb weakness, respiratory impairment, dysphagia, fatigue, sleep disorders, pain, psychosocial distress, communication deficits, cognitive impairment, and spasticity. Death occurs secondary to respiratory failure 2 to 4 years after disease onset on average; however survival of patients up to a decade has been reported [6]. There is currently no cure for MND; hence management is focused on symptomatic treatment, rehabilitative care, and palliative care. The disease exerts a huge psychological and economic burden on the patient and caregivers. 2. Review Strategy Evidence for this review was obtained from a search of the Cochrane data base, PUBMED, guidelines of National Institute for Clinical Excellence (NICE), American Academy of Neurology (AAN), and European Federation of Neurological Societies (EFNS); and peer-reviewed journal articles. MND diagnosis is based on the El Escorial diagnostic criteria [4, 5]. 3. Objectives This
References
[1]
G. Logroscino, B. J. Traynor, O. Hardiman, et al., “Descriptive epidemiology of amyotrophic lateral sclerosis: new evidence and unsolved issues,” Journal of Neurology, Neurosurgery and Psychiatry, vol. 79, no. 1, pp. 6–11, 2008.
[2]
MNDA, Research Strategy 2006–2012, Motor Neuron Disease Association, Northampton, UK, 2007.
[3]
M. R. Turner and A. Al-Chalabi, “Clinical phenotypes,” in The Motor Neurone Disease Handbook, M. Kiernan, Ed., pp. 55–73, Australasian Medical Publishing Company Limited, Prymont, Australia, 2007.
[4]
B. R. Brooks, “El Escorial World Federation of Neurology criteria for the diagnosis of amyotrophic lateral sclerosis,” Journal of the Neurological Sciences, vol. 124, pp. 96–107, 1994.
[5]
B. R. Brooks, R. G. Miller, M. Swash, and T. L. Munsat, “El Escorial revisited: revised criteria for the diagnosis of amyotrophic lateral sclerosis,” Amyotrophic Lateral Sclerosis, vol. 1, no. 5, pp. 293–299, 2000.
[6]
L. Forsgren, B. G. L. Almay, G. Holmgren, and S. Wall, “Epidemiology of motor neuron disease in Northern Sweden,” Acta Neurologica Scandinavica, vol. 68, no. 1, pp. 20–29, 1983.
[7]
F. Khan, L. Turner-Stokes, L. Ng, and T. Kilpatrick, “Multidisciplinary rehabilitation for adults with multiple sclerosis,” Cochrane Database of Systematic Reviews, no. 2, Article ID CD006036, 2011.
[8]
J. Greener and P. Langhorne, “Systematic reviews in rehabilitation for stroke: issues and approaches to addressing them,” Clinical Rehabilitation, vol. 16, no. 1, pp. 69–74, 2002.
[9]
L. Turner-Stokes, N. Sykes, E. Silbert, A. Khatri, L. Sutton, and E. Young, “From diagnosis to death: exploring the interface between neurology, rehabilitation and palliative care in the management of people with long term neurological conditions,” Clinical Medicine, vol. 7, no. 2, pp. 129–136, 2007.
[10]
O. Hardiman, “Multidisciplinary care in motor neurone disease,” in The Motor Neurone Disease Handbook, M. Kiernan, Ed., Australasian Medical Publishing Company, Pyrmont, Australia, 2007.
[11]
D. Oliver, “Palliative care for motor neurone disease,” Practical Neurology, vol. 2, no. 2, pp. 68–79, 2002.
[12]
L. Ng, F. Khan, and S. Mathers, “Multidisciplinary care for adults with amyotrophic lateral sclerosis or motor neuron disease,” Cochrane Database of Systematic Reviews, no. 4, Article ID CD007425, 2009.
[13]
B. J. Traynor, M. Alexander, B. Corr, E. Frost, and O. Hardiman, “Effect of a multidisciplinary amyotrophic lateral sclerosis (ALS) clinic on ALS survival: a population based study, 1996–2000,” Journal of Neurology, Neurosurgery and Psychiatry, vol. 74, no. 9, pp. 1258–1261, 2003.
[14]
J. P. van den Berg, S. Kalmijn, E. Lindeman et al., “Multidisciplinary ALS care improves quality of life in patients with ALS,” Neurology, vol. 65, no. 8, pp. 1264–1267, 2005.
[15]
I. van der Steen, J. P. van den Berg, E. Buskens, E. Lindeman, and L. H. van den Berg, “The costs of amyotrophic lateral sclerosis, according to type of care,” Amyotrophic Lateral Sclerosis, vol. 10, no. 1, pp. 27–34, 2009.
[16]
S. Zoccolella, E. Beghi, G. Palagano et al., “Riluzole and amyotrophic lateral sclerosis survival: a population-based study in southern Italy,” European Journal of Neurology, vol. 14, no. 3, pp. 262–268, 2007.
[17]
A. Chiò, E. Bottacchi, C. Buffa, R. Mutani, G. Mora, and PARALS, “Positive effects of tertiary centres for amyotrophic lateral sclerosis on outcome and use of hospital facilities,” Journal of Neurology, Neurosurgery & Psychiatry, vol. 77, no. 8, pp. 948–950, 2006.
[18]
T. Aridegbe, R. Kandler, S. J. Walters, T. Walsh, P. J. Shaw, and C. J. McDermott, “The natural history of motor neuron disease: assessing the impact of specialist care,” Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration, vol. 14, no. 1, pp. 13–19, 2013.
[19]
R. G. Miller, C. E. Jackson, E. J. Kasarskis, et al., “Practice parameter update: the care of the patient with amyotrophic lateral sclerosis: drug, nutritional, and respiratory therapies (an evidence-based review). Report of the quality standards subcommittee of the American academy of neurology,” Neurology, vol. 73, no. 15, pp. 1218–1226, 2009.
[20]
P. M. Andersen, S. Abrahams, G. D. Borasio et al., “EFNS guidelines on the clinical management of amyotrophic lateral sclerosis (MALS)—revised report of an EFNS task force,” European Journal of Neurology, vol. 19, no. 3, pp. 360–375, 2012.
[21]
P. J. Shaw, “Molecular and cellular pathways of neurodegeneration in motor neurone disease,” Journal of Neurology, Neurosurgery & Psychiatry, vol. 76, no. 6, pp. 1046–1057, 2005.
[22]
M. Cozzolino, A. Ferri, and M. T. Carrì, “Amyotrophic lateral sclerosis: from current developments in the laboratory to clinical implications,” Antioxidants & Redox Signaling, vol. 10, no. 3, pp. 405–443, 2008.
[23]
L. C. Wijesekera and P. N. Leigh, “Amyotrophic lateral sclerosis,” Orphanet Journal of Rare Diseases, vol. 4, no. 1, article 3, 2009.
[24]
J. D. Rothstein, “Therapeutic horizons for amyotrophic lateral sclerosis,” Current Opinion in Neurobiology, vol. 6, no. 5, pp. 679–687, 1996.
[25]
G. Bensimon, L. Lacomblez, and V. Meininger, “A controlled trial of riluzole in amyotrophic lateral sclerosis,” The New England Journal of Medicine, vol. 330, no. 9, pp. 585–591, 1994.
[26]
L. Lacomblez, G. Bensimon, P. N. Leigh, P. Guillet, and V. Meininger, “Dose-ranging study of riluzole in amyotrophic lateral sclerosis,” The Lancet, vol. 347, no. 9013, pp. 1425–1431, 1996.
[27]
G. Bensimon, L. Lacomblez, J. C. Delumeau, R. Bejuit, P. Truffinet, and V. Meininger, “A study of riluzole in the treatment of advanced stage or elderly patients with amyotrophic lateral sclerosis,” Journal of Neurology, vol. 249, no. 5, pp. 609–615, 2002.
[28]
N. Yanagisawa, K. Tashiro, H. Tohgi, et al., “Efficacy and safety of riluzole in patients with amyotrophic lateral sclerosis: double-blind placebo controlled study in Japan,” Igakuno Ayumi, vol. 182, pp. 851–866, 1997.
[29]
R. G. Miller, J. D. Mitchell, and D. H. Moore, “Riluzole for amyotrophic lateral sclerosis (ALS)/motor neuron disease (MND),” Cochrane Database of Systematic Reviews, 2012.
[30]
M. Graf, D. Ecker, R. Horowski et al., “High dose vitamin E therapy in amyotrophic lateral sclerosis as add-on therapy to riluzole: results of a placebo-controlled double-blind study,” Journal of Neural Transmission, vol. 112, no. 5, pp. 649–660, 2005.
[31]
V. Palma, V. Bresci, M. Polverino, L. Santoro, and G. Caruso, “An open study of riluzole versus riluzole plus gabapentin in amyotrophic lateral sclerosis,” Journal of the Peripheral Nervous System, vol. 5, no. 1, pp. 46–47, 2000.
[32]
P. Caroni, “Activity-sensitive signaling by muscle-derived insulin-like growth factors in the developing and regenerating neuromuscular system,” Annals of the New York Academy of Sciences, vol. 692, pp. 209–222, 1993.
[33]
N. T. Neff, D. Prevette, L. J. Houenou et al., “Insulin-like growth factors: putative muscle-derived trophic agents that promote motoneuron survival,” Journal of Neurobiology, vol. 24, no. 12, pp. 1578–1588, 1993.
[34]
M. Beauverd, J. D. Mitchell, J. H. J. Wokke, and G. D. Borasio, “Recombinant human insulin-like growth factor I (rhIGF-I) for the treatment of amyotrophic lateral sclerosis/motor neuron disease,” Cochrane Database of Systematic Reviews, vol. 11, Article ID CD002064, 2012.
[35]
P. Bongioanni, C. Reali, and V. Sogos, “Ciliary neurotrophic factor (CNTF) for amyotrophic lateral sclerosis/motor neuron disease,” Cochrane Database of Systematic Reviews, no. 3, Article ID CD004302, 2004.
[36]
R. W. Orrell, R. J. M. Lane, and M. Ross, “Antioxidant treatment for amyotrophic lateral sclerosis or motor neuron disease,” The Cochrane Database of Systematic Reviews, no. 1, Article ID CD002829, 2007.
[37]
M. E. Gurney, F. B. Cutting, P. Zhai et al., “Benefit of vitamin E, riluzole, and gabapentin in a transgenic model of familial amyotrophic lateral sclerosis,” Annals of Neurology, vol. 39, no. 2, pp. 147–157, 1996.
[38]
J. Knoll, “The pharmacology of selegiline ((-)deprenyl). New aspects,” Acta Neurologica Scandinavica, vol. 80, no. 126, pp. 83–91, 1989.
[39]
E. S. Louwerse, G. J. Weverling, P. M. Bossuyt, F. E. Meyjes, and J. M. de Jong, “Randomized, double-blind, controlled trial of acetylcysteine in amyotrophic lateral sclerosis,” Archives of Neurology, vol. 52, no. 6, pp. 559–564, 1995.
[40]
A. Eisen and C. Krieger, Amyotrophic Lateral Sclerosis: A Synthesis of Research and Clinical Practice, Cambridge University Press, Cambridge, UK, Edited by A. Eisen and C. Krieger, 1998.
[41]
M. K. Rafi, A. R. Proctor, C. J. McDermott, and P. J. Shaw, “Respiratory management of motor neurone disease: a review of current practice and new developments,” Practical Neurology, vol. 12, no. 3, pp. 166–176, 2012.
[42]
S. C. Bourke, P. J. Shaw, and G. J. Gibson, “Respiratory function vs sleep-disordered breathing as predictors of QOL in ALS,” Neurology, vol. 57, no. 11, pp. 2040–2044, 2001.
[43]
N. Lechtzin, C. M. Wiener, D. M. Shade, L. Clawson, and G. B. Diette, “Spirometry in the supine position improves the detection of diaphragmatic weakness in patients with amyotrophic lateral sclerosis,” Chest, vol. 121, no. 2, pp. 436–442, 2002.
[44]
A. Radunovic, D. Annane, M. K. Rafiq, and N. Mustfa, “Mechanical ventilation for amyotrophic lateral sclerosis/motor neuron disease,” Cochrane Database of Systematic Reviews, no. 3, Article ID CD004427, 2013.
[45]
S. C. Bourke, R. E. Bullock, T. L. Williams, P. J. Shaw, and G. J. Gibson, “Noninvasive ventilation in ALS: indications and effect on quality of life,” Neurology, vol. 61, no. 2, pp. 171–177, 2003.
[46]
S. C. Bourke, M. Tomlinson, T. L. Williams, R. E. Bullock, P. J. Shaw, and G. J. Gibson, “Effects of non-invasive ventilation on survival and quality of life in patients with amyotrophic lateral sclerosis: a randomised controlled trial,” The Lancet Neurology, vol. 5, no. 2, pp. 140–147, 2006.
[47]
A. Radunovic, D. Annane, K. Jewitt, and N. Mustfa, “Mechanical ventilation for amyotrophic lateral sclerosis/motor neuron disease,” Cochrane Database of Systematic Reviews, no. 7, Article ID CD004427, 2009.
[48]
K. A. Kleopa, M. Sherman, B. Neal, G. J. Romano, and T. Heiman-Patterson, “Bipap improves survival and rate of pulmonary function decline in patients with ALS,” Journal of the Neurological Sciences, vol. 164, no. 1, pp. 82–88, 1999.
[49]
A. Pinto, J. P. Almeida, S. Pinto, J. Pereira, A. G. Oliveira, and M. De Carvalho, “Home telemonitoring of non-invasive ventilation decreases healthcare utilisation in a prospective controlled trial of patients with amyotrophic lateral sclerosis,” Journal of Neurology, Neurosurgery and Psychiatry, vol. 81, no. 11, pp. 1238–1242, 2010.
[50]
A. Vianello, G. Arcaro, A. Palmieri et al., “Survival and quality of life after tracheostomy for acute respiratory failure in patients with amyotrophic lateral sclerosis,” Journal of Critical Care, vol. 26, no. 3, pp. 329.e7–329.e14, 2011.
[51]
L. H. Goldstein, L. Atkins, and P. N. Leigh, “Correlates of quality of life in people with motor neuron disease (MND),” Amyotrophic Lateral Sclerosis and Other Motor Neuron Disorders, vol. 3, no. 3, pp. 123–129, 2002.
[52]
P. A. Cazzolli and E. A. Oppenheimer, “Home mechanical ventilation for amyotrophic lateral sclerosis: nasal compared to tracheostomy-intermittent positive pressure ventilation,” Journal of the Neurological Sciences, vol. 139, pp. 123–128, 1996.
[53]
A. Kawata, K. Mizoguchi, and H. Hayashi, “A nationwide survey of ALS patients on trachoestomy positive pressure ventilation (TPPV) who developed a totally locked-in state (TLS) in Japan,” Rinsho shinkeigaku, vol. 48, no. 7, pp. 476–480, 2008.
[54]
D. S. Tulsky and M. Rosenthal, “Measurement of quality of life in rehabilitation medicine: emerging issues,” Archives of Physical Medicine and Rehabilitation, vol. 84, no. 4, pp. S1–S2, 2003.
[55]
S. Hadjikoutis, C. M. Wiles, and R. Eccles, “Cough in motor neuron disease: a review of mechanisms,” QJM, vol. 92, no. 9, pp. 487–494, 1999.
[56]
J. R. Bach, “Amyotrophic lateral sclerosis: prolongation of life by noninvasive respiratory aids,” Chest, vol. 122, no. 1, pp. 92–98, 2002.
[57]
J. R. Bach, Y. Ishikawa, and H. Kim, “Prevention of pulmonary morbidity for patients with Duchenne muscular dystrophy,” Chest, vol. 112, no. 4, pp. 1024–1028, 1997.
[58]
M. F. Brito, G. A. Moreira, M. Pradella-Hallinan, and S. Tufik, “Air stacking and chest compression increase peak cough flow in patients with Duchenne muscular dystrophy,” Jornal Brasileiro de Pneumologia, vol. 35, no. 10, pp. 973–979, 2009.
[59]
M. Toussaint, L. J. Boitano, V. Gathot, M. Steens, and P. Soudon, “Limits of effective cough-augmentation techniques in patients with neuromuscular disease,” Respiratory Care, vol. 54, no. 3, pp. 359–366, 2009.
[60]
T. Hughes, “Neurology of swallowing and oral feeding disorders: assessment and management,” Journal of Neurology, Neurosurgery & Psychiatry, vol. 74, supplement 3, pp. iii48–iii52, 2003.
[61]
D. Kidney, M. Alexander, B. Corr, O. O'Toole, and O. Hardiman, “Oropharyngeal dysphagia in amyotrophic lateral sclerosis: neurological and dysphagia specific rating scales,” Amyotrophic Lateral Sclerosis and Other Motor Neuron Disorders, vol. 5, no. 3, pp. 150–153, 2004.
[62]
J. Skelton, “Nursing role in the multidisciplinary management of motor neurone disease,” British Journal of Nursing, vol. 14, no. 1, pp. 20–24, 2005.
[63]
J. C. Desport, P. M. Preux, C. T. Truong, L. Courat, J. M. Vallat, and P. Couratier, “Nutritional assessment and survival in ALS patients,” Amyotrophic Lateral Sclerosis and Other Motor Neuron Disorders, vol. 1, no. 2, pp. 91–96, 2000.
[64]
P. M. Andersen, G. D. Borasio, R. Dengler, et al., “EFNS task force on management of amyotrophic lateral sclerosis: guidelines for diagnosing and clinical care of patients and relatives,” European Journal of Neurology, vol. 12, no. 12, pp. 921–938, 2005.
[65]
P. H. Gordon and H. Mitsumoto, “Symptomatic therapy and palliative aspects of clinical care,” in Handbook of Clinical Neurology, A. A. Eisen and P. J. Shaw, Eds., pp. 389–424, Elsevier, 2007.
[66]
A. Radunovi?, H. Mitsumoto, and P. N. Leigh, “Clinical care of patients with amyotrophic lateral sclerosis,” Lancet Neurology, vol. 6, no. 10, pp. 913–925, 2007.
[67]
S. E. Langmore, E. J. Kasarskis, M. L. Manca, and R. K. Olney, “Enteral tube feeding for amyotrophic lateral sclerosis/motor neuron disease,” Cochrane Database of Systematic Reviews, no. 4, Article ID CD004030, 2006.
[68]
A. Chiò, R. Galletti, C. Finocchiaro et al., “Percutaneous radiological gastrostomy: a safe and effective method of nutritional tube placement in advanced ALS,” Journal of Neurology, Neurosurgery and Psychiatry, vol. 75, no. 4, pp. 645–647, 2004.
[69]
G. Chavada, A. El-Nayal, F. Lee et al., “Evaluation of two different methods for per-oral gastrostomy tube placement in patients with motor neuron disease (MND): PIG versus PEG procedures,” Amyotrophic Lateral Sclerosis, vol. 11, no. 6, pp. 531–536, 2010.
[70]
H.-U. Laasch, L. Wilbraham, K. Bullen, et al., “Gastrostomy insertion: comparing the options—PEG, RIG or PIG?” Clinical Radiology, vol. 58, no. 5, pp. 398–405, 2003.
[71]
P. N. Leigh, S. Abrahams, A. Al-Chalabi et al., “The management of motor neurone disease,” Journal of Neurology, Neurosurgery & Psychiatry, vol. 74, supplement 4, pp. iv32–iv47, 2003.
[72]
R. A. Lyall, N. Donaldson, M. I. Polkey, P. N. Leigh, and J. Moxham, “Respiratory muscle strength and ventilatory failure in amyotrophic lateral sclerosis,” Brain, vol. 124, no. 10, pp. 2000–2013, 2001.
[73]
J. Rosenfeld and A. Ellis, “Nutrition and dietary supplements in motor neuron disease,” Physical Medicine and Rehabilitation Clinics of North America, vol. 19, no. 3, pp. 573–589, 2008.
[74]
F. J. Thornton, T. Fotheringham, M. Alexander, O. Hardiman, F. P. McGrath, and M. J. Lee, “Amyotrophic lateral sclerosis: enteral nutrition provision—endoscopic or radiologic gastrostomy?” Radiology, vol. 224, no. 3, pp. 713–717, 2002.
[75]
A. S. Shaw, M.-A. Ampong, A. Rio et al., “Survival of patients with ALS following institution of enteral feeding is related to pre-procedure oximetry: a retrospective review of 98 patients in a single centre,” Amyotrophic Lateral Sclerosis, vol. 7, no. 1, pp. 16–21, 2006.
[76]
J.-C. Desport, T. Mabrouk, P. Bouillet, A. Perna, P.-M. Preux, and P. Couratier, “Complications and survival following radiologically and endoscopically-guided gastronomy in patients with amyotrophic lateral sclerosis,” Amyotrophic Lateral Sclerosis, vol. 6, no. 2, pp. 88–93, 2005.
[77]
H. D. Katzberg and M. Benatar, “Enteral tube feeding for amyotrophic lateral sclerosis/motor neuron disease,” Cochrane Database of Systematic Reviews, vol. 1, Article ID CD004030, 2011.
[78]
A. Verschueren, A. Monnier, S. Attarian, D. Lardillier, and J. Pouget, “Enteral and parenteral nutrition in the later stages of ALS: an observational study,” Amyotrophic Lateral Sclerosis, vol. 10, no. 1, pp. 42–46, 2009.
[79]
A.-M. Wills, J. Hubbard, E. A. Macklin, et al., “Hypercaloric enteral nutrition in patients with amyotrophic lateral sclerosis: a randomised, double-blind, placebo-controlled phase 2 trial,” The Lancet, vol. 383, no. 9934, pp. 2065–2072, 2014.
[80]
C. E. Jackson, G. Gronseth, J. Rosenfeld, et al., “Randomized double-blind study of botulinum toxin type B for sialorrhea in ALS patients,” Muscle & Nerve, vol. 39, no. 2, pp. 137–143, 2009.
[81]
J. Costa, M. L. Rocha, J. Ferreira, T. Evangelista, M. Coelho, and M. De Carvalho, “Botulinum toxin type-B improves sialorrhea and quality of life in bulbaronset amyotrophic lateral sclerosis,” Journal of Neurology, vol. 255, no. 4, pp. 545–550, 2008.
[82]
S. Peysson, N. Vandenberghe, F. Philit et al., “Factors predicting survival following noninvasive ventilation in amyotrophic lateral sclerosis,” European Neurology, vol. 59, no. 3-4, pp. 164–171, 2008.
[83]
J. P. Gallagher, “Pathologic laughter and crying in ALS: a search for their origin,” Acta Neurologica Scandinavica, vol. 80, no. 2, pp. 114–117, 1989.
[84]
A. Szczudlik, A. S?owik, and B. Tomik, “The effect of amitriptyline on the pathological crying and other pseudobulbar signs,” Neurologia i Neurochirurgia Polska, vol. 29, no. 5, pp. 663–674, 1995.
[85]
S. Iannaccone and L. Ferini-Strambi, “Pharmacologic treatment of emotional lability,” Clinical Neuropharmacology, vol. 19, no. 6, pp. 532–535, 1996.
[86]
E. P. Pioro, B. R. Brooks, J. Cummings, et al., “Dextromethorphan plus ultra low-dose quinidine reduces pseudobulbar affect,” Annals of Neurology, vol. 68, no. 5, pp. 693–702, 2010.
[87]
R. G. Miller, C. E. Jackson, E. J. Kasarskis et al., “Practice parameter update: the care of the patient with amyotrophic lateral sclerosis: drug, nutritional, and respiratory therapies (an evidence-based review): report of the quality standards subcommittee of the American academy of neurology,” Neurology, vol. 73, no. 15, pp. 1218–1226, 2009.
[88]
R. S. Bedlack, D. M. Pastula, J. Hawes, and D. Heydt, “Open-label pilot trial of levetiracetam for cramps and spasticity in patients with motor neuron disease,” Amyotrophic Lateral Sclerosis, vol. 10, no. 4, pp. 210–215, 2009.
[89]
H. D. Katzberg, A. H. Khan, and Y. T. So, “Assessment: symptomatic treatment for muscle cramps (an evidence-based review): report of the therapeutics and technology assessment subcommittee of the American Academy of Neurology,” Neurology, vol. 74, no. 8, pp. 691–696, 2010.
[90]
V. E. Drory, E. Goltsman, J. Goldman Reznik, A. Mosek, and A. D. Korczyn, “The value of muscle exercise in patients with amyotrophic lateral sclerosis,” Journal of the Neurological Sciences, vol. 191, no. 1-2, pp. 133–137, 2001.
[91]
S. McClelland III, F. A. Bethoux, N. M. Boulis, et al., “Intrathecal baclofen for spasticity-related pain in amyotrophic lateral sclerosis: efficacy and factors associated with pain relief,” Muscle & Nerve, vol. 37, no. 3, pp. 396–398, 2008.
[92]
G. T. Carter and R. G. Miller, “Comprehensive management of amyotrophic lateral sclerosis,” Physical Medicine and Rehabilitation Clinics of North America, vol. 9, no. 1, pp. 271–284, 1998.
[93]
J.-S. Lou, “Fatigue in amyotrophic lateral sclerosis,” Physical Medicine and Rehabilitation Clinics of North America, vol. 19, no. 3, pp. 533–543, 2008.
[94]
G. T. Carter, M. D. Weiss, J.-S. Lou et al., “Modafinil to treat fatigue in amyotrophic lateral sclerosis: an open label pilot study,” American Journal of Hospice and Palliative Medicine, vol. 22, no. 1, pp. 55–59, 2005.
[95]
J. G. Rabkin, P. H. Gordon, M. Mcelhiney, R. Rabkin, S. Chew, and H. Mitsumoto, “Modafinil treatment of fatigue in patients with ALS: a placebo-controlled study,” Muscle and Nerve, vol. 39, no. 3, pp. 297–303, 2009.
[96]
P. H. Gordon, B. Cheng, I. B. Katz et al., “The natural history of primary lateral sclerosis,” Neurology, vol. 66, no. 5, pp. 647–653, 2006.
[97]
M. Cobble, “Language impairment in motor neurone disease,” Journal of the Neurological Sciences, vol. 160, no. 1, pp. S47–S52, 1998.
[98]
G. D. Borasio, R. Voltz, and R. G. Miller, “Palliative care in amyotrophic lateral sclerosis,” Neurologic Clinics, vol. 19, no. 4, pp. 829–847, 2001.
[99]
K. E. Steinhauser, N. A. Christakis, E. C. Clipp, M. McNeilly, L. McIntyre, and J. A. Tulsky, “Factors considered important at the end of life by patients, family, physicians, and other care providers,” Journal of the American Medical Association, vol. 284, no. 19, pp. 2476–2482, 2000.
[100]
D. R. Rosen, T. Siddique, D. Patterson, et al., “Mutations in Cu/Zn superoxide dismutase gene are associated with familial amyotrophic lateral sclerosis,” Nature, vol. 362, no. 6415, pp. 59–62, 1993.
[101]
A. Yokoseki, A. Shiga, C.-F. Tan et al., “TDP-43 mutation in familial amyotrophic lateral sclerosis,” Annals of Neurology, vol. 63, no. 4, pp. 538–542, 2008.
[102]
J. Sreedharan, I. P. Blair, V. B. Tripathi et al., “TDP-43 mutations in familial and sporadic amyotrophic lateral sclerosis,” Science, vol. 319, no. 5870, pp. 1668–1672, 2008.
[103]
E. Kabashi, P. N. Valdmanis, P. Dion et al., “TARDBP mutations in individuals with sporadic and familial amyotrophic lateral sclerosis,” Nature Genetics, vol. 40, no. 5, pp. 572–574, 2008.
[104]
S. Hadano, C. K. Hand, H. Osuga, et al., “A gene encoding a putative GTPase regulator is mutated in familial amyotrophic lateral sclerosis 2,” Nature Genetics, vol. 29, no. 2, pp. 166–173, 2001.
[105]
Y. Yang, A. Hentati, H. X. Deng, et al., “The gene encoding alsin, a protein with three guanine-nucleotide exchange factor domains, is mutated in a form of recessive amyotrophic lateral sclerosis,” Nature Genetics, vol. 29, no. 2, pp. 160–165, 2001.
[106]
Y.-Z. Chen, C. L. Bennett, H. M. Huynh, et al., “DNA/RNA helicase gene mutations in a form of juvenile amyotrophic lateral sclerosis (ALS4),” The American Journal of Human Genetics, vol. 74, no. 6, pp. 1128–1135, 2004.
[107]
A. L. Nishimura, M. Mitne-Neto, H. C. A. Silva, et al., “A mutation in the vesicle-trafficking protein VAPB causes late-onset spinal muscular atrophy and amyotrophic lateral sclerosis,” American Journal of Human Genetics, vol. 75, no. 5, pp. 822–831, 2004.
[108]
M. J. Greenway, M. D. Alexander, S. Ennis et al., “A novel candidate region for ALS on chromosome 14q11.2,” Neurology, vol. 63, no. 10, pp. 1936–1938, 2004.
[109]
M. J. Greenway, P. M. Andersen, G. Russ et al., “ANG mutations segregate with familial and 'sporadic' amyotrophic lateral sclerosis,” Nature Genetics, vol. 38, no. 4, pp. 411–413, 2006.
[110]
I. Puls, C. Jonnakuty, B. H. LaMonte et al., “Mutant dynactin in motor neuron disease,” Nature Genetics, vol. 33, no. 4, pp. 455–456, 2003.
[111]
C. Münch, R. Sedlmeier, T. Meyer et al., “Point mutations of the p150 subunit of dynactin (DCTN1) gene in ALS,” Neurology, vol. 63, no. 4, pp. 724–726, 2004.
[112]
A. Al-Chalabi, Z. E. Enayat, M. C. Bakker, et al., “Association of apolipoprotein E ε4 allele with bulbar-onset motor neuron disease,” The Lancet, vol. 347, no. 8995, pp. 159–160, 1996.
[113]
T. Meyer, A. Fromm, C. Münch et al., “The RNA of the glutamate transporter EAAT2 is variably spliced in amyotrophic lateral sclerosis and normal individuals,” Journal of the Neurological Sciences, vol. 170, no. 1, pp. 45–50, 1999.
[114]
D. Trotti, M. Aoki, P. Pasinelli et al., “Amyotrophic lateral sclerosis-linked glutamate transporter mutant has impaired glutamate clearance capacity,” The Journal of Biological Chemistry, vol. 276, no. 1, pp. 576–582, 2001.
[115]
D. Lambrechts, E. Storkebaum, M. Morimoto, et al., “VEGF is a modifier of amyotrophic lateral sclerosis in mice and humans and protects motoneurons against ischemic death,” Nature Genetics, vol. 34, no. 4, pp. 383–394, 2003.
[116]
P. Pasinelli and R. H. Brown, “Molecular biology of amyotrophic lateral sclerosis: insights from genetics,” Nature Reviews Neuroscience, vol. 7, no. 9, pp. 710–723, 2006.
[117]
L. Siklós, J. Engelhardt, Y. Harati, R. G. Smith, F. Joó, and S. H. Appel, “Ultrastructural evidence for altered calcium in motor nerve terminals in amyotrophic lateral sclerosis,” Annals of Neurology, vol. 39, no. 2, pp. 203–216, 1996.
[118]
F. R. Wiedemann, K. Winkler, A. V. Kuznetsov et al., “Impairment of mitochondrial function in skeletal muscle of patients with amyotrophic lateral sclerosis,” Journal of the Neurological Sciences, vol. 156, no. 1, pp. 65–72, 1998.
[119]
T. L. Williamson and D. W. Cleveland, “Slowing of axonal transport is a very early event in the toxicity of ALS-linked SOD1 mutants to motor neurons,” Nature Neuroscience, vol. 2, no. 1, pp. 50–56, 1999.
[120]
T. Murakami, I. Nagano, T. Hayashi et al., “Impaired retrograde axonal transport of adenovirus-mediated E. coli LacZ gene in the mice carrying mutant SOD1 gene,” Neuroscience Letters, vol. 308, no. 3, pp. 149–152, 2001.
[121]
K. J. De Vos, A. J. Grierson, S. Ackerley, and C. C. J. Miller, “Role of axonal transport in neurodegenerative diseases,” Annual Review of Neuroscience, vol. 31, pp. 151–173, 2008.
[122]
S. Carpenter, “Proximal axonal enlargement in motor neuron disease,” Neurology, vol. 18, no. 9, pp. 841–851, 1968.
[123]
A. Hirano, I. Nakano, L. T. Kurland, D. W. Mulder, P. W. Holley, and G. Saccomanno, “Fine structural study of neurofibrillary changes in a family with amyotrophic lateral sclerosis,” Journal of Neuropathology and Experimental Neurology, vol. 43, no. 5, pp. 471–480, 1984.
[124]
P. Anand, A. Parrett, J. Martin et al., “Regional changes of ciliary neurotrophic factor and nerve growth factor levels in post mortem spinal cord and cerebral cortex from patients with motor disease,” Nature Medicine, vol. 1, no. 2, pp. 168–172, 1995.
[125]
J. L. Elliott and W. D. Snider, “Motor neuron growth factors,” Neurology, vol. 47, no. 4, supplement 2, pp. S47–S53, 1996.
[126]
R. W. Oppenheim, “Neurotrophic survival molecules for motoneurons: an embarrassment of riches,” Neuron, vol. 17, no. 2, pp. 195–197, 1996.
[127]
C. Guégan and S. Przedborski, “Programmed cell death in amyotrophic lateral sclerosis,” Journal of Clinical Investigation, vol. 111, no. 2, pp. 153–161, 2003.
[128]
P. Pasinelli, D. R. Borchelt, M. K. Houseweart, D. W. Cleveland, and R. H. Brown Jr., “Caspase-1 is activated in neural cells and tissue with amyotrophic lateral sclerosis-associated mutations in copper-zinc superoxide dismutase,” Proceedings of the National Academy of Sciences of the United States of America, vol. 95, no. 26, pp. 15763–15768, 1998.
[129]
P. Pasinelli, M. K. Houseweart, R. H. Brown Jr., and D. W. Cleveland, “Caspase-1 and -3 are sequentially activated in motor neuron death in Cu,Zn superoxide dismutase-mediated familial amyotrophic lateral sclerosis,” Proceedings of the National Academy of Sciences of the United States of America, vol. 97, no. 25, pp. 13901–13906, 2000.