Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0040822 (tremor)
 18,428 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

This review covers recent advances in a variety of dyskinesias. Introduction of new drugs for the treatment of myoclonus and sensory biofeedback therapy for focal dystonia are expanding our concepts of these types of movement disorders. Progress in the treatment of action myoclonus is especially noteworthy and has led to the implication of serotonin deficit in the pathophysiology of this syndrome. Knowledge of the biochemical pathology of Huntington's chorea has outpaced therapy for this disorder, but new forms of therapy have been proposed based on the chemical findings. Basic pharmacologic studies suggest pathophysiologic mechanisms for the syndrome known as tardive dyskinesia, but treatment is still far from ideal for this disorder. Other movement disorders with recent therapeutic advances include essential tremor and hemiballism. This review will cover only those dyskinesias in which new therapies have been advanced in the last few years. Aside from parkinsonism, which will not be discussed here, progress in the treatment of movement disorders has been slow, but steady. New drugs are being tested constantly, and the purpose of this review is to call attention to the ongoing evaluation in this field. Descriptions and etiologies for these dyskinesias are covered elsewhere (Fahn, 1976a) and therefore are not repeated here.
 ...
PMID:New approaches in the management of hyperkinetic movement disorders. 30 60

This review considers the evidence for possible involvement of central nervous system pacemaker neurons in several clinical disorders of movement. Two basic types of tremor are discussed from this point of view, i.e., 4--7/sec parkinsonian tremor, of possible thalamocortical origin, and 7--11/sec essential tremor of possible olivo-cerebellar origin. The importance of motor programs and abnormalities in their utilization are considered with reference to the loss of motor function in parkinsonism (? loss of motor programs), and the inappropriate release of such programs as a possible basis for the involuntary movements seen in other movement disorders, such as chorea, athetosis, dystonia, and hemiballismus. The possible role of pacemaker neurons controlling such programs is considered. Finally, the subject of locomotion and the pacemaker model of the spinal locomotor pattern generator for stepping are considered in relation to clinical disorders of gait. While critical evidence is lacking for pacemaker inovlvement in any of these disorders, their possible role is emphasized.
 ...
PMID:Possible involvement of central pacemakers in clinical disorders of movement. 35 Jun 32

Haloperidol (0.25 mg/kg i.m.) was injected daily for 6 months in six normal monkeys. Over a 24 hour period, the following symptoms could be observed: akathisia, circling, akinesia, choreoathetoid and dystonic movements, oro-facial dyskinesias and postural tremor with or without harmaline. Six months after cessation of haloperidol, harmaline-induced postural tremor could still be observed in all animals and oro-facial abnormal movements, in one monkey. The neuropathologic study of the experimental material did not disclose any alteration of the central nervous system.
 ...
PMID:Haloperidol-induced dyskinesias in the monkey. 40 96

The clinical features of 12 patients with spasmodic dysphonia are described. In 11 patients, the voice was strained, harsh, tight, and tremulous, and was low in volume and pitch. Speech, which was sometimes barely intelligible, was interrupted by irregular stoppages and catches of the voice; it required considerable effort, and was accompanied by facial grimacing. The dysphonia was part of a more widespread neurological disorder (idiopathic torsion dystonia) in one case, while it coexisted with blepharospasm in another, and with postural tremor in two. There was a buccolingual hyskinesia in another of these 11 patients, but this may have been related to her previous drug regime. In the twelfth patient, who had a familial tremor, the voice was characterised by marked breathiness, with intermittent aphonia. The disorder is probably due to a focal dystonia of the laryngeal musculature, and this would be consistent with the type of neurological disorders that were associated with it in our cases. Symptomatic benefit follows the therapeutic division of one of the recurrent laryngeal nerves, in selected cases.
 ...
PMID:Clinical aspects of spasmodic dysphonia. 65 Feb 44

Wilson's disease in childhood has several characters distinct from those in adults. The progression of the disease tends to be rapid, hepatic manifestations are common, cerebral symptoms related to dystonia are predominant, and tremor is rare. Forty-nine children with Wilson's disease under the age of 15 were treated with D-penicillamine for 2 to 15 years. None of the presymptomatic patients subsequently developed any symptoms of the disease. The results of treatment in patients who had exhibited only hepatic symptoms were also excellent. However, neurological manifestations associated with a history of jaundice or ascites responded less well to chelation. These observations clearly indicate that early diagnosis and treatment are extremely important to ensure normal lives for children with Wilson's disease.
 ...
PMID:Prognosis of Wilson's disease in childhood. 91 36

The occurence of extranuchal dystonia, facial spasm, parkinsonian symptoms (facial masking, bradykinesia, rigidity), tremor and family history of tremor was tabulated in a group of 30 patients with IST. The incidence of extranuchal dystonia increased as severity of IST increased. There was a strong trend for severity of extranuchal dystonia to increase as severity of torticollis increased, which was significant (p less than 0.001). There was a similar trend for severity of facial spasm to increase with increasing severity of torticollis (p less than 0.025). Parkinsonian features were seen in 10 of 30 patients, and in three the diagnosis of Parkinson's disease could be entertained. Tremor was seen in 26 of 30 patients being mild in 12, moderate in 11, and severe in three. A family history of tremor was present in 16 of 28 cases for whom history was available (12 primary, four secondary relations). The results are most consistent with the hypothesis that IST is a variant of DMD with tremor as an integral part of the disease and tremor represents a forme of the disease in family members.
 ...
PMID:Dystonia and tremor in spasmodic torticollis. 94 73

A family study of 32 patients with torsion dystonia has shown at least two forms of generalized dystonia with onset in childhood. These two forms, an autosomal dominant and an autosomal recessive, are clinically indistinguishable. There were at least three families and probably about six to eight patients with the autosomal recessive variety. The remaining nine to 11 patients with generalized childhood dystonia are thought, because of a probable paternal age effect, to be examples of new dominant mutations. Since fitness with childhood onset is 1/20 of normal, most childhood dominant cases appear sporadically. Most of the other 15 patients (12 with onset in adult life) appear to have a non-genetic torsion dystonia, although an example of a benign adult-onset dominant form associated with a tremor has been observed. It is concluded that there are at least two forms of genetic torsion dystonia, an autosomal recessive form with onset in childhood, which, on evidence from America, is particularly common in Ashkenazi Jews, and one or more dominant forms, with onset in childhood or adult life. The majority of adult-onset isolated cases of idiopathic torsion dystonia seem to be due to exogenous but unidentified causes.
 ...
PMID:A genetic study of torsion dystonia. 112 Oct 20

Animal data indicate that serotonin (5-HT) is a major neurotransmitter involved in the control of numerous central nervous system functions including mood, aggression, pain, anxiety, sleep, memory, eating behavior, addictive behavior, temperature control, endocrine regulation, and motor behavior. Moreover, there is evidence that abnormalities of 5-HT functions are related to the pathophysiology of diverse neurological conditions including Parkinson's disease, tardive dyskinesia, akathisia, dystonia, Huntington's disease, familial tremor, restless legs syndrome, myoclonus, Gilles de la Tourette's syndrome, multiple sclerosis, sleep disorders, and dementia. The psychiatric disorders of schizophrenia, mania, depression, aggressive and self-injurious behavior, obsessive compulsive disorder, seasonal affective disorder, substance abuse, hypersexuality, anxiety disorders, bulimia, childhood hyperactivity, and behavioral disorders in geriatric patients have been linked to impaired central 5-HT functions. Tryptophan, the natural amino acid precursor in 5-HT biosynthesis, increases 5-HT synthesis in the brain and, therefore, may stimulate 5-HT release and function. Since it is a natural constituent of the diet, tryptophan should have low toxicity and produce few side effects. Based on these advantages, dietary tryptophan supplementation has been used in the management of neuropsychiatric disorders with variable success. This review summarizes current clinical use of tryptophan supplementation in neuropsychiatric disorders.
 ...
PMID:L-tryptophan in neuropsychiatric disorders: a review. 130 30

A variety of hyperkinetic movement disorders has been associated with the use of neuroleptics (dopamine receptor blocking drugs), but tardive tremor has not been previously documented. We describe five patients in whom tremor occurred after chronic treatment with neuroleptics, was aggravated by and persisted after neuroleptic withdrawal, and improved after treatment with the dopamine depleting drug tetrabenazine. This involuntary oscillatory movement, with a frequency range of 3-5 Hz, was most prominent during maintenance of a posture, but was also present at rest and during a goal-directed movement. The tremor was accompanied by other tardive movement disorders, including akathisia, chorea, dystonia, myoclonus, and stereotypy. There was no family history or other explanation for tremor in these patients. We suggest that this hitherto unreported movement disorder is best termed "tardive tremor."
 ...
PMID:Tardive tremor. 134 52

The clinical evaluation and pharmacological treatment of Gilles de la Tourette's syndrome (TS) and other hyperkinesias in Hvidovre Hospital is reviewed. Pimozide still seems to be the most effective single drug in the treatment of Tourette symptoms. Anticholinergics most often in combination with one or two other drugs are still the most effective drug in the treatment of dystonia. Clozapine is an effective alternative in the treatment of tremor.
 ...
PMID:Clinical evaluation and pharmacological treatment of Gilles de la Tourette's syndrome and other hyperkinesias. 135 7


1 2 3 4 5 6 7 8 9 10 Next >>