Cerebrospinal fluid protein patterns in spasmodic torticollis.

Area of Science:

• Neurology
• Biochemistry

Background:

• Spasmodic torticollis is a movement disorder with poorly understood pathogenesis.
• Distinguishing between organic and psychogenic forms is clinically significant.

Purpose of the Study:

• To evaluate the diagnostic value of cerebrospinal fluid (CSF) protein analysis in spasmodic torticollis.
• To explore potential differences in CSF protein profiles between organic and psychogenic torticollis.

Main Methods:

• Isoelectric focusing and electrophoresis were used to analyze CSF proteins from patients with organic and psychogenic torticollis.
• CSF samples were examined from six patients with probable organic and two with probable psychogenic torticollis.

Main Results:

• Two pathological CSF-protein fractions were consistently found in patients with organic torticollis.
• Aberrant CSF protein fractions were observed in the acidic pH range in four organic cases.
• Patients with psychogenic torticollis exhibited normal CSF protein patterns.
• Lithium treatment correlated with reduced torticollis symptoms and normalized CSF protein fractions.

Conclusions:

• CSF protein analysis via electrofocusing can distinguish organic from psychogenic torticollis.
• Abnormal CSF protein profiles suggest an underlying organic pathology, potentially involving an encephalitogenic agent.
• The findings support the use of CSF protein analysis as a diagnostic tool for torticollis subtypes.