Parkinson's Flashcards

1
Q

Parkinson’s

A
  • Parkinson’s disease (PD): The second most common neurogenerative disorder after Alzheimer’s disease.
  • In the disease there is a gradual loss of dopamine producing neurons in the substantia nigra.
  • Neurons of the substantia nigra normally supply or enervate a part of the brain called the striatum.
  • Loss of dopamine supply to the striatum leads to the characteristic tremor and movement disorders seen in the disease.
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2
Q

Parkinson’s: Sign and symptoms

SSSSS

A

Shake, shuffle, stiff, slow, speech

  • Characteristic tremor often called ‘pill rolling’ which looks as if a patient is rolling a pill between their index finger and thumb.
  • Muscle rigidity or dystonia stiff or weak muscles and difficulty maintaining posture.
  • Shuffling gait (dragging feet)
  • Constipation and loss of sense of smell may occur many years before Parkinson’s disease diagnosis.
  • Bradykinesia or slowness of movement. Affects handwriting ( micrographia ), facial expression and speech.
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3
Q

Parkinson’s: Causes and risk factors

A
  • Age, hereditary, sex.
  • Mitochondrial dysfunction, inflammation and oxidative stress.
  • Traumatic brain injury.
  • Pesticides and herbicides.
  • Manganese, iron, mercury, lead and aluminium toxicity.
  • Poor calcium metabolism.
  • Stress and depression.
  • Recreational drugs, especially amphetamines.
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4
Q

PD: Alpha synuclein

A
  • Similar to Alzheimer’s disease, Parkinson’s disease has a misfolded protein associated with its pathology.
  • Misfolded alpha synuclein is thought to become misfolded due to excess oxidative stress.
  • Once misfolded, alpha synuclein can form protein aggregates called Lewy bodies.
  • Lewy body accumulates in and around dopamine neurons leading to further oxidative stress, mitochondrial dysfunction and finally dopamine neuron loss.
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5
Q

Parkinson’s: Metals

A

Manganese
Iron
Mercury

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6
Q

Parkinson’s: L-dopa

A
  • Dopamine cannot cross the blood brain barrier (BBB). L-dopa can cross into the CNS where it converts into dopamine.
  • Serotonin producing neurons also convert L-dopa to dopamine by using amino acid decarboxylase the same enzyme is used to make both dopamine and serotonin.
  • Serotonin neurons can be damaged by L-dopa, resulting in some negative psychological effects.
  • L-dopa drugs also include another drug called a decarboxylase inhibitor this drug inhibits L dopa
    dopamine conversion outside the brain, resulting in a higher level of dopamine reaching the brain.
  • Vitamin B6 should be taken away from L-dopa medication as it may interfere with decarboxylase inhibitors.
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7
Q

Parkinson’s: Catecholaldehyde
Theory

A

Dopamine is metabolised by MAO-B leading to DOPAL.

Slowing down MAO B and speeding up DOPAL detoxification is considered to be a protective strategy for dopaminergic neurons.

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8
Q

Parkinson’s: Early warning signs

A
  • Loss of sense of smell
  • Constipation
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9
Q

Parkinson’s Diet

A

Permutter
MEND 1 and 2

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10
Q

Parkinson’s: Other considerations

A
  • Hyperbaric oxygen (breathing pure oxygen in a pressurised room) can lessen psychiatric symptoms associated with PD.
  • Avoid EMFs from mobile phones and microwaves. EMFs have been found to disrupt cell membrane calcium channels leading to oxidative / nitrosative stress in the CNS.
  • Chelation of aluminium with Volvic , Fiji water and other chelators such as chlorella and coriander. Aluminium has been shown to displace iron from its stores leading to increased oxidative stress and protein misfolding.
  • Alpha lipoic acid can chelate damaging iron deposits from ageing brains.
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11
Q

Herbs for brain health

A

BBB
* Gotu kola: neuroprotective (reversing neuronal
damage)
* Gingko biloba: circulatory stimulant, tissue perfusion enhancing.
* Ashwagandha

Parkinson’s disease:
* Mucuna pruriens : Contains L-dopa

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