Friday, November 16, 2012

Alzheimer's and Parkinson's



Two common forms of neurodegeneration are Alzheimer’s disease and Parkinson’s disease. Over 5 million Americans are living with Alzheimer’s and about 50,000 new cases of Parkinson’s disease are diagnosed each year.

Alzheimer’s disease is the most common form of dementia, leading to a loss of memory and mental function, worsening over time. It is currently hypothesized that the root of this disease is due to a buildup beta-amyloid plaques. The plaques clump outside neurons, which then alter tau protein folding, which disrupts normal neuron function. The symptoms generally appear after the patient is over the age of 60. Onset of the symptoms is slow, starting first with getting lost and taking longer to complete normal everyday chores, then slowly lacking the ability to recognize friends and family. More severe symptoms include hallucinations, paranoia, weight loss, and seizures. While there is no cure, there are many medications available to slow the progression of symptoms. The most common treatment is a cholinesterase inhibitor, which boosts cell communication. Experimental treatment being developed focuses on inhibiting beta-amyloid buildup.

Parkinson’s disease is the result of loss of dopamine-producing cells in the brain. Dopamine influences movement and initiation. When the cells stop producing this neurotransmitter, it results in very apparent symptoms associated with Parkinson’s disease, including tremor, muscle stiffness, bradykinesia (slow movement), dyskinesia (jerking of the muscles), and impaired balance and coordination. Other symptoms include difficulty swallowing, chewing and speaking, as well as emotional changes. The onset of symptoms is again progressive and associated with age, with most patients being senior citizens. The loss of the brain cells is still idiopathic, but it is associated with Lewy bodies, clumps of protein alpha-synuclein. Parkinson’s is diagnosed with a MRI, CT, or PET scan when the Lewy bodies are seen in the midbrain or brain stem. There is no cure for Parkinson’s disease, but several treatments to alleviate symptoms. The most common is levodopa, a drug which helps nerve cells make dopamine. Unfortunately its effectiveness is reduced as a result of overuse. Generally after 3 years, patients have to switch medications.

Most patients of both Parkinson’s and Alzheimer’s need caregivers. Caregivers are a necessity to patients who begin to lack the ability to perform daily tasks on their own. For Alzheimer’s patients, having a constant figure in their life is great when they can no longer adapt to change. Caregivers also help regulate their schedules, keeping patients eating, taking their medication, and going to the bathroom regularly. For Parkinson’s patients, caregivers are not there to keep their minds in check, just to help them perform tasks for them such as feeding them or escorting them when they walk.

Although both of these diseases are common in elderly citizens, it is not a natural process of aging. Both represent irreversible degenerative clinical processes.

“About Alzheimer’s Disease: Symptoms” Alzheimer’s Disease Education and Referral Center. National Institute on Aging: National Institutes of Health, April 2011. http://www.nia.nih.gov/alzheimers/topics/symptoms

“Alzheimer’s Disease.” Center for Disease Control and Prevention, 13 October 2011 http://www.cdc.gov/aging/aginginfo/alzheimers.htm

“Alzheimer’s Disease.” Mayo Clinic: Mayo Foundation for Medical Education and Research, 18 January 2011. http://www.mayoclinic.com/health/alzheimers-disease/DS00161

“NINDS Parkinson’s Disease Information Page.” National Institute of Neurological Disorders and Stroke, 14 November 2012. http://www.ninds.nih.gov/disorders/parkinsons_disease/parkinsons_disease.htm

“Parkinson’s disease – Causes.” National Health Service, 5 October 2012. http://www.nhs.uk/Conditions/Parkinsons-disease/Pages/Causes.aspx

“Parkinson’s Disease Overview” National Parkinson Foundation, 2012. http://www.parkinson.org/parkinson-s-disease.aspx

“What is Alzheimer’s disease?” Alzheimer’s Society: National Institute for Health and Clinical Excellence, 2012. http://www.alzheimers.org.uk/site/scripts/documents_info.php?documentID=100


“What is Parkinson’s Disease?” Parkinson’s Disease Foundation, 2012. http://www.pdf.org/en/about_pd

1 comment:

  1. In regards to Alzheimer’s disease, having spent nearly half of my childhood living in an environment where my mother facilitated her own at-home care home for elderly people, I have been exposed to the mentioned consistent difficulties associated with Alzheimer's Disease on a daily basis. Caring for people with Alzheimer's is a strenuous 24/7 job where watch is always needed, although every person suffers from AD at a different severity. My mother had duties of showering patients to ensure they wouldn’t fall, administering shots and medications, providing every meal, aiding them when using the bathroom, changing colostomy bags or Depends diapers on some, and just being a comforting presence to provide interaction with. I think the most painful thing to see is when sufferers become frustrated because they don’t understand why they have to be told what to do or why they’re incapable of taking care of themselves to be placed into a care home. It is understandable why AD is the 6th leading cause of death because AD suffers cannot take care of themselves. All in all, AD affects the everyday life of elderly sufferers and much patience and understanding is needed to care for them, which is why family members chose to place an AD family member into a care home where they can receive the 24/7 care they wouldn't have been able to provide themselves.

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