Tuesday, October 19, 2021
Tuesday, October 19, 2021
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What Is The Reason For Parkinson’s Disease

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Who Is Prone To Parkinson’s Disease

Some people are more to Parkinsons disease than others. They include:

  • People who are of advanced age
  • Males are more likely to get Parkinsons disease than females
  • People with a family history of Parkinsons disease
  • Postmenopausal women who have very low levels of oestrogen
  • Women who have undergone hysterectomies
  • People who suffer from vitamin B deficiency
  • People who have suffered from head trauma
  • People who are frequently exposed to environmental toxins such as a pesticide or herbicide

How You Lose Dopamine Production

Damaged nerve cells can be what results in a decreased ability of the brain to create dopamine. Generally, some kind of degradation of the brain cells will reduce dopamine production.

There is some genetic link to parkinsons disease. For example, specific genetic mutations can impact the dopamine production. Far more common is that exposure to something in the environment can impact the brain.

No One Definitive Cause Of Parkinsons

There are no biomarkers or objective screening tests that indicate one has Parkinsons. That said, medical experts have shown that a constellation of factors are linked to it.

Parkinsons causes are likely a blend of genetics and environmental or other unknown factors. About 10 to 20 percent of Parkinsons disease cases are linked to a genetic cause, says Ted Dawson, M.D., Ph.D., director of the Institute for Cell Engineering at Johns Hopkins. The types are either autosomal dominant or autosomal recessive .

But that leaves the majority of Parkinsons cases as idiopathic, which means unknown. We think its probably a combination of environmental exposure to toxins or pesticides and your genetic makeup, says Dawson.

Age. The biggest risk factor for developing Parkinsons is advancing age. The average age of onset is 60.

Gender. Men are more likely to develop Parkinsons disease than women.

Genetics. Individuals with a parent or sibling who is affected have approximately two times the chance of developing Parkinsons. Theres been an enormous amount of new information about genetics and new genes identified over the past 10 or 15 years that have opened up a greater understanding of the disease, says Dawson.

Stages Of Parkinsons Disease

Neurologists usually describe the progression of Parkinsons symptoms in stages, using the system known as the Hoehn and Yahr scale. These stages are:

  • Stage I Symptoms are seen on one side of the body only.
  • Stage II Symptoms are seen on both sides of the body. Theres no impairment of balance.
  • Stage III Balance impairment has begun. In this mild- to moderate stage of the disease, the person is still physically independent.
  • Stage IV This stage is marked by severe disability, but the person is still able to walk or stand unassisted.
  • Stage V The person is wheelchair-bound or bedridden unless assisted.

What If I Carry The Gene

Parkinson Disease : simplebooklet.com

There are ongoing clinical trials testing therapies to treat people who have Parkinson’s and carry certain gene mutations. Proving that it can be important to know which gene mutation you carry. Consult with your doctor when considering a genetic test to determine if you are eligible to participate in gene-based clinical trials.

The Parkinsons Foundation study, PD GENEration: Mapping the Future of Parkinsons Disease, is the first national study to offer genetic testing and counseling at no cost for those with a confirmed Parkinsons diagnosis. Learn more and enroll at Parkinson.org/PDGENEration.

*Please note that not all content is available in both languages. If you are interested in receiving Spanish communications, we recommend selecting both” to stay best informed on the Foundation’s work and the latest in PD news.

Theories About What Causes Parkinsons

The cause of Parkinsons disease is still unknown, although there is some evidence for the role of genetics, environmental factors, or a combination of both. It is also possible that there may be more than one cause of the disease. Scientists generally believe that both genetics and environment interact to cause Parkinsons disease in most people who have it.

Currently, there is an enormous amount of research directed at producing more answers about what causes Parkinsons disease and how it might be prevented or cured. When physicians diagnose Parkinsons, they often describe it as idiopathic . This simply means that the cause of the disease is not known.

What Are The Causes Of Parkinson’s Disease

The causes of Parkinsons disease include:

  • Genetics and family history
  • Frequent exposure to pesticides such as insecticides, herbicides, and fungicides
  • Lewy bodies that are abnormal clumps of proteins found in the brain stem of people with Parkinsons disease which affect brain functions
  • Loss of dopamine production in the brain when cells that produce dopamine are damaged
  • Advanced age

Dementia With Lewy Bodies

Other namesDiffuse Lewy body disease, dementia due to Lewy body disease
of a in a neuron of the ; scale bar=20 microns
After the age of 50, median 76
Duration
Average survival 8 years from diagnosis
FrequencyAbout 0.4% of persons older than 65

Dementia with Lewy bodies is a type of characterized by changes in sleep, , , movement, and . Memory loss is not always an early symptom. The disease and is usually diagnosed when cognitive decline interferes with . Together with , DLB is one of the two . It is a common form of dementia, but the is not known accurately and many diagnoses are missed. The disease was first described by in 1976.

in which people lose the that normally occurs during and act out their dreamsis a core feature. RBD may appear years or decades before other symptoms. Other core features are , marked fluctuations in or alertness, and . A presumptive diagnosis can be made if several disease features are present, such as symptoms or certain results of , , , and . A definitive diagnosis usually requires an .

What Are The Causes

The cause of Parkinson’s is largely unknown. Scientists are currently investigating the role that genetics, environmental factors, and the natural process of aging have on cell death and PD.

There are also secondary forms of PD that are caused by medications such as haloperidol , reserpine , and metoclopramide .

The Nervous System & Dopamine

To understand Parkinson’s, it is helpful to understand how neurons work and how PD affects the brain .

Nerve cells, or neurons, are responsible for sending and receiving nerve impulses or messages between the body and the brain. Try to picture electrical wiring in your home. An electrical circuit is made up of numerous wires connected in such a way that when a light switch is turned on, a light bulb will beam. Similarly, a neuron that is excited will transmit its energy to neurons that are next to it.

Neurons have a cell body with branching arms, called dendrites, which act like antennae and pick up messages. Axons carry messages away from the cell body. Impulses travel from neuron to neuron, from the axon of one cell to the dendrites of another, by crossing over a tiny gap between the two nerve cells called a synapse. Chemical messengers called neurotransmitters allow the electrical impulse to cross the gap.

Neurons talk to each other in the following manner :

Who Can Get It

While anyone can develop Parkinsons disease, age is the greatest factor in receiving a diagnosis. The average age of developing this disease is 60, and men are more likely to receive a diagnosis than women. Having a close relative, like a parent or sibling, who has Parkinsons disease doubles your risk factor. 

Eat Fresh Raw Vegetables

If you needed more reasons to eat your vegetables, this should be the clincher. Studies show that increased amounts of the B vitamin folic acid, found primarily in vegetables, can significantly reduce the risk of Parkinsons.

The best sources of folic acid are simultaneously some of the healthiest foods on the planet, namely dark green vegetables like broccoli, spinach, collard greens, brussels sprouts, asparagus and okra all of which can be grown in your backyard! This B vitamin can also be found in avocado, legumes and lentils.

Support For People With Parkinsons Disease

parkinson

Early access to a multidisciplinary support team is important. These teams may include doctors, physiotherapists, occupational therapists, speech therapists, dietitians, social workers and specialist nurses. Members of the team assess the person with Parkinsons disease and identify potential difficulties and possible solutions.There are a limited number of multidisciplinary teams in Victoria that specialise in Parkinsons disease management. But generalist teams are becoming more aware of how to help people with Parkinsons disease.  

Incidence Of Parkinsons Disease

Its estimated that approximately four people per 1,000 in Australia have Parkinsons disease, with the incidence increasing to one in 100 over the age of 60. In Australia, there are approximately 80,000 people living with Parkinsons disease, with one in five of these people being diagnosed before the age of 50. In Victoria, more than 2,225 people are newly diagnosed with Parkinsons every year.

What Is The Link Between Paraquat And Parkinsons Disease

What Is the Link Between Paraquat and Parkinsons Disease? Diseases affect a living beings structure and function. For example, macular degeneration causes your retina to degenerate or causes blood vessel growth beneath the retina. These developments cause blurred vision and may result in loss of vision. The structural impact of the disease alters the affected body parts ability to function typically.

Infectious diseases can spread from person to person or animal to person. COVID-19 is an infectious disease. Dietary deficiencies cause deficiency diseases. Beriberi is a disease caused by a lack of vitamin B1. Hereditary diseases like cystic fibrosis are passed down from your ancestors or caused by mutated genes. Physiological diseases affect the way a person functions. Parkinsons disease is a physiological disease. People with Parkinsons disease may be curious about the connection between paraquat and Parkinsons. Read on to learn about Parkinsons, paraquat, and your legal options if you have Parkinsons.

How Do I Prevent Falls From Common Hazards

  • Floors: Remove all loose wires, cords, and throw rugs. Minimize clutter. Make sure rugs are anchored and smooth. Keep furniture in its usual place.
  • Bathroom: Install grab bars and non-skid tape in the tub or shower. Use non-skid bath mats on the floor or install wall-to-wall carpeting.
  • Lighting: Make sure halls, stairways, and entrances are well-lit. Install a night light in your bathroom or hallway and staircase. Turn lights on if you get up in the middle of the night. Make sure lamps or light switches are within reach of the bed if you have to get up during the night.
  • Kitchen: Install non-skid rubber mats near the sink and stove. Clean spills immediately.
  • Stairs: Make sure treads, rails, and rugs are secure. Install a rail on both sides of the stairs. If stairs are a threat, it might be helpful to arrange most of your activities on the lower level to reduce the number of times you must climb the stairs.
  • Entrances and doorways: Install metal handles on the walls adjacent to the doorknobs of all doors to make it more secure as you travel through the doorway.

What Medications Are Used To Treat Parkinsons Disease

Medications are the main treatment method for patients with Parkinsons disease. Your doctor will work closely with you to develop a treatment plan best suited for you based on the severity of your disease at the time of diagnosis, side effects of the drug class and success or failure of symptom control of the medications you try.

Medications combat Parkinsons disease by:

  • Helping nerve cells in the brain make dopamine.
  • Mimicking the effects of dopamine in the brain.
  • Blocking an enzyme that breaks down dopamine in the brain.
  • Reducing some specific symptoms of Parkinsons disease.

Levodopa: Levodopa is a main treatment for the slowness of movement, tremor, and stiffness symptoms of Parkinsons disease. Nerve cells use levodopa to make dopamine, which replenishes the low amount found in the brain of persons with Parkinsons disease. Levodopa is usually taken with carbidopa to allow more levodopa to reach the brain and to prevent or reduce the nausea and vomiting, low blood pressure and other side effects of levodopa. Sinemet® is available in an immediate release formula and a long-acting, controlled release formula. Rytary® is a newer version of levodopa/carbidopa that is a longer-acting capsule. The newest addition is Inbrija®, which is inhaled levodopa. It is used by people already taking regular carbidopa/levodopa for when they have off episodes .

Surgery For People With Parkinsons Disease

Deep brain stimulation surgery is an option to treat Parkinsons disease symptoms, but it is not suitable for everyone. There are strict criteria and guidelines on who can be a candidate for surgery, and this is something that only your doctor and you can decide. Surgery may be considered early or late in the progression of Parkinsons. When performing deep-brain stimulation surgery, the surgeon places an electrode in the part of the brain most effected by Parkinsons disease. Electrical impulses are introduced to the brain, which has the effect of normalising the brains electrical activity reducing the symptoms of Parkinsons disease. The electrical impulse is introduced using a pacemaker-like device called a stimulator. Thalamotomy and pallidotomy are operations where the surgeon makes an incision on part of the brain. These surgeries aim to alleviate some forms of tremor or unusual movement, but they are rarely performed now.

The Genetic Causes Of Parkinsons

A 2020 study of 1,676 people with Parkinsons disease in mainland China found that genes play a role in the diseases development. An estimated 10 to 15% of Parkinsons patients have a family history of the disease.

Even so, a variety of specific genes are related to the development of Parkinsons disease.

How does genetics play a role in Parkinsons disease in some families? According to Genetics Home Reference, one possible method is through the mutation of genes responsible for the production of dopamine as well as certain proteins essential for brain function

According to some newer research from 2021, treatments may potentially be tailored to a persons unique genetic background. However, first, we need more research on the genetic forms of the disorder.

Diagnosis Of Parkinsons Disease

A number of disorders can cause symptoms similar to those of Parkinson’s disease. People with Parkinson’s-like symptoms that result from other causes are sometimes said to have parkinsonism. While these disorders initially may be misdiagnosed as Parkinson’s, certain medical tests, as well as response to drug treatment, may help to distinguish them from Parkinson’s. Since many other diseases have similar features but require different treatments, it is important to make an exact diagnosis as soon as possible.

There are currently no blood or laboratory tests to diagnose nongenetic cases of Parkinson’s disease. Diagnosis is based on a person’s medical history and a neurological examination. Improvement after initiating medication is another important hallmark of Parkinson’s disease.

How Do You Know You Have Parkinsons Disease

Parkinsons and Delay the Disease

There is no definitive way to diagnose Parkinsons disease. Your doctor will ask questions about the onset of your symptoms and assess your movement to make referrals to specialists who can make a formal diagnosis. 

You can expect to see a neurologist who can complete a neurologic examination. This may include brain imaging, an , or a PET scan to see activity in the area of the brain typically affected by Parkinsons disease. 

Your doctor may also refer you to a movement disorder specialist. Seeing subspecialists is very important to avoid being misdiagnosed. Highly trained specialists can provide their expertise in specific areas of medicine where a precise diagnosis isnt possible from blood work or another definitive test.

What Causes Parkinsons

Parkinsons is a disease of the central nervous system caused by the loss of dopamine-producing cells in the brain. However, exactly why dopamine-producing cells become lost is unclear. Research suggests that a combination of genetic and environmental factors may be responsible. How these two factors interact varies from person to person. It is also unclear why some people develop the disease but not others.

What Else Do We Know

As scientists try to learn what’s at the root of Parkinson’s, they’re looking far and wide to pick up clues where they can.

They’ve found that people with Parkinson’s tend to have something called Lewy bodies in their brain. These are unusual clumps of a protein called alpha-synuclein. The protein itself is normal, but the clumps are not. And they’re found in parts of the brain that affect sleep and sense of smell, which could explain some symptoms of Parkinson’s not related to movement.

Your gut may also have a part in it, as some of its cells make dopamine, too. Some doctors think that this might be where the earliest signs of Parkinson’s show up, but that idea needs more research.

How Is Parkinsons Disease Diagnosed

There are no blood tests or imaging tests used to diagnose Parkinsons disease. Diagnosis is based upon a person’s signs and symptoms, medical history, and physical and neurologic examination.

Two of the three primary symptoms must be present to make the diagnosis, with one of the symptoms being slow movement.

Other characteristics of symptoms that support the diagnosis of Parkinsons disease include:

  • Symptoms began on one side of the body
  • Tremors occur when the person’s limb is resting
  • Symptoms can be controlled with Parkinsons disease medications
  • If the diagnosis of Parkinsons disease is uncertain, a medication challenge test may be recommended
  • A medication commonly used to treat Parkinsons symptoms is given for at least two months
  • If the person’s symptoms improve, a diagnosis of Parkinsons disease is likely
  • People with Parkinsons disease-like symptoms caused by other diseases usually do not improve with medication

Imaging tests such as magnetic resonance imaging may be used to rule out other possible diagnoses.

Dopamine transporter single-photon emission computed tomography imaging is a brain imaging test that can diagnose a condition called essential tremor that may cause similar symptoms to Parkinsons disease. 

What Lifestyle Changes Can I Make To Ease Parkinsons Symptoms

Exercise: Exercise helps improve muscle strength, balance, coordination, flexibility, and tremor. It is also strongly believed to improve memory, thinking and reduce the risk of falls and decrease anxiety and depression. One study in persons with Parkinsons disease showed that 2.5 hours of exercise per week resulted in improved ability to move and a slower decline in quality of life compared to those who didnt exercise or didnt start until later in the course of their disease. Some exercises to consider include strengthening or resistance training, stretching exercises or aerobics . All types of exercise are helpful.

Eat a healthy, balanced diet: This is not only good for your general health but can ease some of the non-movement related symptoms of Parkinsons, such as constipation. Eating foods high in fiber in particular can relieve constipation. The Mediterranean diet is one example of a healthy diet.

Preventing falls and maintaining balance: Falls are a frequent complication of Parkinson’s. While you can do many things to reduce your risk of falling, the two most important are: 1) to work with your doctor to ensure that your treatments whether medicines or deep brain stimulation are optimal; and 2) to consult with a physical therapist who can assess your walking and balance. The physical therapist is the expert when it comes to recommending assistive devices or exercise to improve safety and preventing falls.

Is Parkinsons Disease Inherited

Scientists have discovered gene mutations that are associated with Parkinsons disease.

There is some belief that some cases of early-onset Parkinsons disease disease starting before age 50 may be inherited. Scientists identified a gene mutation in people with Parkinsons disease whose brains contain Lewy bodies, which are clumps of the protein alpha-synuclein. Scientists are trying to understand the function of this protein and its relationship to genetic mutations that are sometimes seen in Parkinsons disease and in people with a type of dementia called Lewy body dementia.

Several other gene mutations have been found to play a role in Parkinsons disease. Mutations in these genes cause abnormal cell functioning, which affects the nerve cells ability to release dopamine and causes nerve cell death. Researchers are still trying to discover what causes these genes to mutate in order to understand how gene mutations influence the development of Parkinsons disease.

Scientists think that about 10% to 15% of persons with Parkinsons disease may have a genetic mutation that predisposes them to development of the disease. There are also environmental factors involved that are not fully understood.

Black Americans And Parkinsons Disease

Most research suggests that Parkinsons disease is more likely to affect whites and Hispanics.

But, some studies have shown that Black patients may be less likely to receive proper care for the disease. 

A review published in 2018 in Neurology found there are racial disparities when it comes to managing Parkinsons disease.

Researchers identified one study that showed Black patients were 4 times less likely than whites to be started on treatment for Parkinsons.

Another study found an average seven-year delay in diagnosis among Black patients.

Clinical History And Testing

Diagnostic tests can be used to establish some features of the condition and distinguish them from symptoms of other conditions. Diagnosis may include taking the person’s , a physical exam, assessment of neurological function, testing to rule out conditions that may cause similar symptoms, brain imaging, to assess cognitive function,, or myocardial scintigraphy. Laboratory testing can rule out other conditions that can cause similar symptoms, such as abnormal , , , or vitamin deficiencies that may cause symptoms similar to dementia.

Dementia screening tests are the and the . For tests of attention, , , and can be used for simple screening, and the Revised Digit Symbol Subtest of the may show defects in attention that are characteristic of DLB. The , and are used for evaluation of executive function, and there are many other screening instruments available.

If DLB is suspected when parkinsonism and dementia are the only presenting features, PET or SPECT imaging may show reduced dopamine transporter activity. A DLB diagnosis may be warranted if other conditions with reduced dopamine transporter uptake can be ruled out.

Since 2001, – has been used diagnostically in East Asia , but not in the United States. MIBG is taken up by nerve endings, such as those that innervate the heart, and is for scintigraphy with radioactive 123iodine. Autonomic dysfunction resulting from damage to nerves in the heart in patients with DLB is associated with lower cardiac uptake of 123I-MIBG.

The Genetics Of Parkinsons

Parkinson

A 2020 study including 1,676 people with Parkinsons in mainland China suggested that genes play a role in the development of the condition. An estimated 10 to 15 percent of people with Parkinsons have a family history of the condition.

In fact, a number of specific genes have been linked to the development of Parkinsons.

How do genetics factor into Parkinsons in some families? According to Genetics Home Reference, one possible way is through the mutation of genes responsible for producing dopamine and certain proteins essential for brain function.

Parkinson’s Diseasewhat Are The Causes Of Parkinson’s Disease

Symptoms manifest due to a malfunction of dopamine neurons

The brain is the central control tower that governs the condition of the body. Messages sent out by the brain are transmitted from one nerve cell to the next by neurotransmitters that pass the message on like a baton during a relay race, causing your body to move in reaction to the message. In Parkinson’s disease, levels of dopamine, a neurotransmitter in a part of the brain called the substantia nigra, decrease, causing a loss of control over body movement. It is still not fully understood what causes the amount of dopamine to decrease. Changes in the brain associated with age and, in some cases, changes related to a person’s genes, are presumed to be the cause. Supplementing the deficient dopamine with medication can lessen the symptoms of Parkinson’s disease.

What Causes Parkinsons Disease

Parkinsons disease is a chronic, progressive neurological disease that currently affects about 1 million Americans. Parkinsons disease involves a small, dark-tinged portion of the brain called the substantia nigra. This is where you produce most of the dopamine your brain uses. Dopamine is the chemical messenger that transmits messages between nerves that control muscle movements as well as those involved in the brains pleasure and reward centers. As we age, its normal for cells in the substantia nigra to die. This process happens in most people at a very slow rate.

But for some people, the loss happens rapidly, which is the start of Parkinsons disease. When 50 to 60 percent of the cells are gone, you begin to see the symptoms of Parkinsons.

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