Which of the following statement is true regarding Landry Guillian Barre Syndrome –
**Core Concept**
Landry Guillian Barre Syndrome (GBS) is an autoimmune, demyelinating condition characterized by acute-onset weakness and areflexia, resulting from a misdirected immune response against peripheral nerve myelin. This leads to a rapid deterioration of nerve conduction velocity and transmission.
**Why the Correct Answer is Right**
The condition is often triggered by a preceding infection, such as Campylobacter jejuni or Haemophilus influenzae, which activates autoreactive T cells that attack the myelin sheath of peripheral nerves. This results in a loss of myelin and subsequent demyelination, leading to the characteristic symptoms of GBS. The immune response is mediated by antibodies against gangliosides, which are components of the myelin sheath.
**Why Each Wrong Option is Incorrect**
**Option A:** GBS is not primarily an axonal degeneration disorder, but rather a demyelinating condition.
**Option B:** The condition is not typically associated with an increase in cerebrospinal fluid (CSF) protein levels, but rather a decrease in CSF protein synthesis.
**Option C:** GBS does not typically result from a viral infection directly attacking the peripheral nervous system, but rather from an autoimmune response triggered by a preceding infection.
**Clinical Pearl / High-Yield Fact**
Recall that GBS can be precipitated by a variety of infections, including Campylobacter jejuni and Haemophilus influenzae, and that the condition is characterized by a rapid onset of weakness and areflexia.
**Correct Answer:** C.