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At least 1,117 records · Page 62Linked to original sources
PubMed1993

[Movement disorders in HTLV-I associated myelopathy (HAM)].

Periodic movements in sleep (nocturnal myoclonus) are characterized by a triple flexion of the ankle, knee and hip, which are particularly evident during 1-2 and 2-3 sleep stages. Iijima et al (1991) reported these movements in 5 out of 7 HAM patients, suggesting that nocturnal myoclonus is not rare in HAM. L-dopa and bromocriptine are reported to be the most effective. Spinal myoclonus (SM) is characterized by symmetric, rhythmic involuntary contractions of muscle groups supplied by one or several contiguous segments of the spinal cord. There has been only one case report of SM by Kanda et al (1988). Clonazepam and tetrabenazine are reported to be the most effective. Tremor is characterized by a sinusoidal oscillatory movement produced by synchronous or alternating contractions of reciprocally innervated antagonist muscles. Postural finger tremor was seen in about 40% of HAM patients (Suwazono et al, 1989). Painful, paroxysmal muscle contractions of the lower limbs were reported in only one patient with HAM by Ikeda et al in 1990. Based on electrophysiological findings, they were thought to be caused by reciprocal excitation in the spinal cord.

Clonazepam↗
PubMed2006

Novel mutation in the ceruloplasmin gene causing a cognitive and movement disorder with diabetes mellitus.

In a Chinese woman who had diabetes mellitus, undetectable ceruloplasmin, hand tremor, neck dystonia, and cognitive disturbances, genetic analyses revealed a novel homozygous mutation (848G > C or W283S) in exon 5 in the ceruloplasmin gene. Another member with a milder phenotype was also affected by this mutation. The healthy sister was heterozygous at the same position. Aceruloplasminemia has not yet been reported in China. This case suggests that increased awareness should be paid to this disorder in the presence of the typical symptoms.

Ceruloplasmin↗
PubMed2000

Autoimmune mechanisms in movement disorders.

A number of disorders, including childhood-onset obsessive compulsive disorder (OCD) and Gilles de la Tourette's syndrome (TS), are known to be neurobiological in nature. Both TS and OCD are neuropsychiatric diagnoses that involve congitive and perceptual dysfunction in addition to motor and psychiatric manifestations. The association of the B-cell marker with both Sydenham's chorea and a group of neuropsychiatric disorders, such as OCD, tics, and TS, has been useful as a marker in these diseases. This evidence, coupled with the recent finding of anti-brain antibodies in the sera of these patients, raises a number of interesting questions concerning the pathological mechanisms involved in these diseases. Thus, further molecular characterization of the brain and streptococcal antigens will be crucial to our understanding of the neurophysiological processes involved in these disorders.

Antibodies, Monoclonal↗
PubMed1993

Impaired activation pattern in antagonistic elbow muscles of patients with spastic hemiparesis: contribution to movement disorder.

Surface electromyographic "EMG" activity in biceps brachii (agonist muscle) and triceps brachii (antagonist muscle) as well as the discharge behaviour of motor units "MUs" (needle recording) in biceps brachii muscle were recorded during slow (0.33 Hz) and fast (0.66 Hz) voluntary elbow flexion movements (auditory matching task) in fifty patients with spastic hemiplegia. In the spastic limbs, a long lasting, small amplitude tonic co-contraction of antagonist muscles was seen during slow flexions (SF) in 29 cases. This effect was strongest during the fast elbow flexion movements (FF). In 33 patients a triphasic pattern of muscle activation was observed on the unaffected side but not on the spastic side. The amplitude of the agonist surface EMG was significantly reduced and the amplitudes of the MU potentials recruited during maximal effort were generally smaller on the spastic side compared to the unaffected side. The agonist-antagonist activation pattern was analysed with respect to three clinically identifiable functional recovery stages of voluntary movements in the spastic limbs, namely synergistic, isolated and useful movements. The MU amplitudes and the amplitude of the surface EMG activity in the agonist muscle recorded during FF movements became significantly larger whereas the amplitude of the antagonist tonic activity became smaller with increasing functional recovery of the limb. It is concluded that impaired recruitment of type II motor units in the agonist muscles and the inability to selectively activate the agonist muscle contribute to the deficit in motor performance in spastic paresis.

Adult↗