Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0030567 (Parkinson's disease)
 63,064 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The neuropsychological effects of Parkinson's disease have gained wide recognition in recent literature. Effects have been documented in almost all areas of cognitive functioning, including general intellectual functioning, visual-spatial functioning, executive functions, attention and memory functions, language functions, and affective processes. Visual-spatial functions, memory functions, and executive functions have received particular interest. This review of the literature is an attempt to tie together the large number of studies in these cognitive areas and to present a suggestion for a comprehensive neuropsychological battery tailored to the patient with Parkinson's disease. Throughout the review, factors relevant to Parkinson's disease, e.g., dementia, motor symptoms, and hemiparkinsonism, are considered.
Neuropsychol Rev 1990 Sep
PMID:Neuropsychological aspects of Parkinson's disease. 215 31

The importance of the dopaminergic system in brain function has been emphasized by its association with neurological and psychiatric disorders such as Parkinson's disease and schizophrenia. On the basis of their biochemical and pharmacological characteristics, dopamine receptors are classified into D1 and D2 subtypes. As the most abundant dopamine receptor in the central nervous system, D1 receptors seem to mediate some behavioural responses, modulate activity of D2 dopamine receptors, and regulate neuron growth and differentiation. The D dopamine receptor has been cloned by low-stringency screening. We report here the cloning of human and rat D1 dopamine receptors by applying an approach based on the polymerase chain reaction. The cloned human D1 dopamine receptor has been characterized on the basis of four criteria: the deduced amino-acid sequence, which reveals that it is a G protein-coupled receptor; the tissue distribution of its messenger RNA, which is compatible with that of the D1 dopamine receptor; its pharmacological profile when transfected into COS-7 cells; and its ability to stimulate the accumulation of cyclic AMP in human 293 cells.
Nature 1990 Sep 06
PMID:Cloning and expression of human and rat D1 dopamine receptors. 216 20

There is sometimes an aspect of a disease that can only be uncovered by surgical exposure in surgical cases and, in spite of all the modern scanning and pathological investigations, by the assembly of the patient's history and symptoms in medical cases. My knowledge of Parkinson's disease is minimal, but I am a trained observer and I have attempted to present a brief study of the condition from 'inside looking out' in the hope that it will assist in expanding clinical rapport.
Br Dent J 1990 Sep 22
PMID:A view from inside. 220 76

Patients suffering from Parkinson's disease frequently complain of dizziness, postural instability and falls. Vestibular tests have been performed in 30 parkinsonian patients and in 28 controls. The results suggest a central vestibular disturbance in Parkinson's disease which correlates with the clinical disability. This vestibular disturbance is assumed to be due to dysfunction of the nigro-striato-collicular tracts.
Schweiz Med Wochenschr 1990 Sep 08
PMID:[Vestibular disorders in Parkinson patients]. 221 50

Age-adjusted mortality rates for Parkinson's disease (PD) for men and women in the United States, from 1955 to 1986, were calculated and subjected to longitudinal Gompertzian analysis. Annual age-adjusted PD mortality rate distributions were determined by a common intersect point and a variable environmental factor. For men, the death rate at age 73.75 years was 19.15/100,000; for women, the death rate at age 78.99 years was 28.64/100,000 for each year from 1955 to 1986. The environmental factor declined (improved) 360.7-fold for men and 319.6-fold for women in 1986 compared to 1955. Despite this dramatic environmental improvement favoring survival in PD, there has been a 57.6% increase since 1980 in the annual crude PD mortality rate for men compared to the stable annual crude mortality rate from 1955 to 1979. A corresponding 37.9% increase in the annual crude PD mortality rate for women has also occurred since 1980. The increase in overall mortality is due entirely to rapidly increasing age-adjusted mortality rates at ages greater than the intersect points for men and women. The results suggest that overall mortality due to common 'degenerative' diseases may increase dramatically as has occurred in PD.
Mech Ageing Dev 1990 Sep
PMID:Longitudinal Gompertzian analysis of Parkinson's disease mortality in the U.S., 1955-1986: the dramatic increase in overall mortality since 1980 is the natural consequence of deterministic mortality dynamics. 223 14

The distribution of calbindin-D28K (CaBP)-positive neurons was investigated by immunohistochemistry in 4 controls, 5 cases of Parkinson's disease and a single case of strionigral degeneration. CaBP-positive neurons were preferentially localized to the mediodorsal portion of the substantia nigra pars compacta (SNC) in the beta layer, while CaBP-negative, melanin-positive neurons were concentrated in the ventrolateral SNC in the alpha layer. In Parkinson's disease and the case of strionigral degeneration, there was a relative sparing of the CaBP-positive neurons compared with CaBP-negative, pigmented neurons. These data imply that CaBP may confer some protection to SNC dopaminergic neurons against the pathological process which is responsible for Parkinson's disease and strionigral degeneration.
Brain Res 1990 Sep 03
PMID:Relative sparing in Parkinson's disease of substantia nigra dopamine neurons containing calbindin-D28K. 225 87

Autopsy results on patients and corresponding studies in nonhuman primates have revealed that autografts of adrenal medulla into the striatum, used as a treatment for Parkinson's disease, do not survive well. Because adrenal chromaffin cell viability may be limited by the low levels of available nerve growth factor (NGF) in the striatum, the present study was conducted to determine if transected peripheral nerve segments could provide sufficient levels of NGF to enhance chromaffin cell survival in vitro and in vivo. Aged female rhesus monkeys, rendered hemiparkinsonian by the drug MPTP (n-methyl-4-phenyl-1,2,3,6 tetrahydropyridine), received autografts into the striatum using a stereotactic approach, of either sural nerve or adrenal medulla, or cografts of adrenal medulla and sural nerve (three animals in each group). Cell cultures were established from tissue not used in the grafts. Adrenal chromaffin cells either cocultured with sural nerve segments or exposed to exogenous NGF differentiated into a neuronal phenotype. Chromaffin cell survival, when cografted with sural nerve into the striatum, was enhanced four- to eightfold from between 8000 and 18,000 surviving cells in grafts of adrenal tissue only up to 67,000 surviving chromaffin cells in cografts. In grafts of adrenal tissue only, the implant site consisted of an inflammatory focus. Surviving chromaffin cells, which could be identified by both chromogranin A and tyrosine hydroxylase staining, retained their endocrine phenotype. Cografted chromaffin cells exhibited multipolar neuritic processes and numerous chromaffin granules, and were also immunoreactive for tyrosine hydroxylase and chromogranin A. Blood vessels within the graft were fenestrated, indicating that the blood-brain barrier was not intact. Additionally, cografted chromaffin cells were observed in a postsynaptic relationship with axon terminals from an undetermined but presumably a host origin.
J Neurosurg 1990 Sep
PMID:NGF-like trophic support from peripheral nerve for grafted rhesus adrenal chromaffin cells. 238 81

We studied the influence of several factors on the occurrence of response fluctuations in 91 Parkinson's disease patients. These included the age at onset, the presenting symptom, the duration of illness, and the stage of the disease at the time of initiation of levodopa treatment as time-independent covariates, and the mean and last dosage of levodopa as time-dependent covariates. Taken separately, none of the factors was related to the occurrence of response fluctuations. We found no evidence to delay levodopa treatment to a later stage of the disease. In the analysis of the combined influence of the age at onset and the interval before levodopa treatment, we noted a tendency for response fluctuations to occur less frequently in those patients with age at onset of 60 years and over who had started levodopa treatment more than 2 years after the 1st symptom. Our analysis of the combination of time-dependent factors suggests that response fluctuations are a likely event in those patients in whom the course of the disease recently necessitated an increase in the dosage of levodopa.
Neurology 1990 Sep
PMID:Response fluctuations in Parkinson's disease. 239 14

We evaluated the sexual function of 41 married men with Parkinson's disease (PD) and its relation to age, severity of PD, and depression. We used a group of 29 married men with arthritis for comparison. Total sexual functioning and categories of desire, arousal, orgasm, and satisfaction did not differ significantly between patients with PD and arthritis. For both PD and arthritis, increased age, severity of illness, and depression were associated with reduced sexual function. These results suggest that sexual dysfunction is common in married men with PD, but no more so than in men with another chronic illness that does not involve the nervous system.
Neurology 1990 Sep
PMID:Sexual function in married men with Parkinson's disease compared to married men with arthritis. 239 15

Ten patients were studied before and after autologous adrenal medullary transplantation to the central nervous system for Parkinson's disease to determine if the presence of new catecholamine-producing tissue near the hypothalamus would alter hypothalamic or pituitary function, mineralocorticoid levels, or catecholamine production. No clinically apparent ill effects occurred. Changes in endocrine function were largely short-term and transient: at 7-10 days after surgery, urinary catecholamine levels were significantly increased, PRL levels were significantly elevated despite markedly increased serum dopamine levels, and gonadal steroid levels (estradiol and testosterone) were significantly lower despite unchanged basal and stimulated levels of gonadotropins. Dehydroepiandrosterone sulfate was significantly reduced at 7-10 days after surgery and remained low at 3-6 months. Other changes at 3-6 months after surgery included increased stimulated corticotropin levels and reduced serum aldosterone response to upright posture. The changes at 7-10 days were probably due to stress or unilateral adrenalectomy or both; the changes at 3-6 months were likely due to unilateral adrenalectomy. We conclude that unilateral adrenalectomy and autologous adrenal medullary transplantation to the central nervous system does not produce clinically important changes in endocrine function; however, possible adverse consequences of long-term reduction of dehydroepiandrosterone sulfate levels cannot be excluded.
J Clin Endocrinol Metab 1990 Sep
PMID:Changes in endocrine function after adrenal medullary transplantation to the central nervous system. 239 80


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