Essay on Parkinson’s Disease - 2135 Words

Parkinson’s Disease Parkinson’s disease is a disease with a wide variety of disabilities recognizable as changes in appearance, posture, walking, and balance. In 1817, the English physician James Parkinson described these symptoms in his patients and has had his name become synonymous with the disease. In 1893 the substantia nigra of the basal ganglia was identified as an area of disease for Parkinson’s. Examination with the naked eye reveals a lack of black pigment in this portion of the brainstem. Subsequent follow up with the microscope showed a deterioration of the nerve cells in this area. The circuitous relationship between the substantia nigra and the basal ganglia explains many of the symptoms of Parkinson’s disease. Today the†¦show more content†¦Consequently, both the basal ganglia and the cerebellum are influenced by and return influence to the descending motor pathways (pyramidal and extrapyramidal), which affect the activity of the lower motoneurons. The substantia nigra is a subcortical nucleus that is closely related to basal ganglia. It is reciprocally connected with the striatum and sends efferents to the ventral anterior and dorsomedial thalamic nuclei and, to some extent, to the ventral lateral thalamic nuclei. The substantia nigra pars reticulata also projects to the superior colliculus. Neurons that originate in the striatum and project to the substantia nigra are inhibitory and utilize the neurotransmitters GABA and substance P. Fibers that arise in the pars compacta of the substantia nigra use the neurotransmitter dopamine and synapse in the striatum, while GABAminergic cells in the pars reticulata receive striatal input and project to the thalamus. Recordings from neurons in the basal ganglia of monkeys during various motor tasks reveal that the discharge of single cells in the neostriatum show a direct correlation with movements of the contralateral arm or leg, and that the discharge of substantial percentage of neurons precedes the onset of a movement. These studies suggest that the basal ganglia participate in movements at a high level, including the planning of movement synergy’s. Lesions of the basal ganglia resulting from disease in humans cause: disorders of theShow MoreRelatedThe Parkinsons Disease1596 Words   |  6 PagesMany people around the world today suffer from Parkinson’s disease and other movement disorders. A movement disorder is a disorder impairing the speed, fluency, quality, and ease of movement. There are many types of movement disorders such as impaired fluency and speed of movement (dyskinesia), excessive movements (hyperkinesia), and slurred movements (hypokinesia). Some types of moveme nt disorders are ataxia, a lack of coordination, Huntingtons disease, multiple system atrophies, myoclonus, briefRead MoreThe Parkinsons Disease761 Words   |  3 PagesMathur states that â€Å"Genetics loads the gun, environment pulls the trigger† (Mathur). Parkinson’s Disease (PD) exhibits this pattern, with the vast majority of PD cases being idiopathic, likely the result of combined genetic and environmental factors. While many researchers previously sought symptom-specific treatment, recent breakthroughs open the door for the discovery of genetic and environmental causes so that disease prevention, and even reversal, emerge as viable possibilities. Recent research demonstratesRead More Parkinsons Disease Essay1764 Words   |  8 PagesParkinson’s disease (PD) is a striatal dopamine deficiency disorder as a consequence of neuronal loss in the substania nigra. It is named after James Parkinson, a British apothecary, who first fully documented its physical signs in 1817. Since then, significant advances have been made in our understanding of characteristic pathophysiology as well as in the medical treatment of different stages of PD. An overview of condition features in terms of epidemiology, manifestations, diagnosis and diseaseRead MoreParkinson’s Disease Essay1446 Words   |  6 PagesParkinson’s Disease is known as one of the most common progressive and chronic neurodegenerative disorders. It belongs to a group of conditions known as movement disorders. Parkinson disease is a component of hypokinetic disorder because it causes a decreased in bodily movement. It affects people who are usually over the age of 50. It can i mpair an individual motor as well as non-motor function. Some of the primary symptoms of Parkinson’s disease are characterized by tremors or trembling in handsRead More Parkinsons Disease Essay1642 Words   |  7 PagesParkinsons Disease Parkinson’s Disease (PD), the shaking palsy first described by James Parkinson in 1817, is a progressive neurodegenerative disorder which affects in upwards of 1.5 million Americans. The disease begins to occur around age 40 and has incidence with patient age. One survey found that PD may affect 1% of the population over 60. Incidence seems to be more prominent in men, and tends to progress to incapacity and death over one or two decades. Clinical diagnosis of PD isRead MoreEssay on Parkinson’s Disease1305 Words   |  6 PagesParkinson’s Disease (PD) is a chronic neurological disease that effects about 329 per 100,000 people in the US. The average onset of this disease usually is for people over the age of 50, with the baby boomers getting older there may be an increase in this disease, as much as 9 million people worldwide. (Pawha 2010) Etiology The disease happens when the cells in the brain are damaged or stop-producing Dopamine, which helps with muscle movement, thus leaves those patients unable to control theirRead MoreParkinson’s Disease Essay1260 Words   |  6 PagesParkinson’s Disease Parkinson’s Disease (PD), known for its degenerative abilities and debilitating affects, is an illness that affects approximately 1 million Americans. The cause of this disease has not been pinpointed, although strides have been made towards a cure. As our elderly population increases, so does our overwhelming need to find a suitable cure that may one day eliminate this disease. Concepts of PD After watching the video: My father, My Brother, and Me, viewable at www.pbsRead MoreParkinsons Disease Essay1504 Words   |  7 Pages Parkinsons Disease Parkinsons is an idiopathic, multifactorial neurodegenerative disease that attacks neurotransmitters in the brain called dopamine. Dopamine is concentrated in a specific area of the brain called the substantia nigra. The neurotransmitter dopamine is a chemical that regulates muscle movement and emotion. Dopamine is responsible for relaying messages between the substantia nigra and other parts of the brain to control body movement. The death of these neurotransmitters affectsRead MoreEssay Parkinsons Disease3763 Words   |  16 PagesParkinsons Disease In 1817, James Parkinson published his famous treatise: An Essay on the Shaking Palsy, describing the symptoms which now collectively bear his name. Although many scientists before his time had described various aspects of motor dysfunction (ataxia, paralysis, tremor) Parkinson was the first to collect them into a common syndrome; one which he believed formed a distinctive condition. His sixty-six page essay contained five chapters describing symptoms, differential diagnosesRead MoreParkinsons Disease Essay784 Words   |  4 PagesDiagnosis of Parkinson’s Disease is extremely important in terms of treating the symptoms before the disease gets worse. It is common for patients with PD to have motor symptoms such as gait disorder, which comes from muscle stiffness/rigidity, bradykinesia, postural imbalance, etc. Gait disorders can generally help determine how far the neurological disorder has affected the motor function and control of the individual. Many physicians in general c linics determine if a patient has PD or if it has