MRCP UK EXAMINATIONS

NEUROLOGY

MYOTONIC DYSTROPHY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Mitochondrial myopathies is when mitochondria are damaged due to mutations. This results in muscle weakness, deafness, blindness, arrhythmia, and heart failure.
A
True
B
False
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -The buildup of lactic acid in the blood-called lactic acidosis-is associated with muscle fatigue and might damage muscle and nerve tissue. Muscle and nerve cells use the ATP derived from mitochondria as their main source of energy.

Detailed explanation-2: -Primary mitochondrial myopathies (PMM) are a group of disorders that are associated with changes in genetic material (e.g. depletions, deletions, or mutations) found within the DNA of mitochondria (mtDNA) or with genes outside the mitochondria (nuclear DNA), affecting predominantly the skeletal muscle.

Detailed explanation-3: -In mitochondrial diseases, the mitochondria cannot efficiently turn sugar and oxygen into energy, so the cells do not work correctly. There are many types of mitochondrial disease, and they can affect different parts of the body: the brain, kidneys, muscles, heart, eyes, ears, and others.

There is 1 question to complete.