Abstract
A technique was developed to record intracranial cerebrospinal fluid pressure (iCSFp) in chicks and mature chickens. Using that procedure, 2 methods were found to effect a significant elevation in intracranial pressure: 1) feeding a purified diet to roosters for 40 d containing 25% of the bird's requirement for vitamin A, and 2) ligating both jugular veins in birds. The purified diet significantly reduced plasma retinol levels from 1.080 to 0.046 μg/mL, and iCSFp was significantly elevated from 63.0 to 106.0 mmH 2O (P ≤ 0.05). Two limitations for using hypovitaminosis A diets were capillary fragility and a cisterna magna that did not develop to the size of that structure in birds of the same age fed control diets with adequate vitamin A content. The second procedure, a reversible surgical technique, showed that within 2.5 h from jugular vein ligation, intracranial pressure rose to 109.7 mmH2O, comparable with levels attained following feeding a vitamin A deficient diet to roosters. Bilateral clamping of the jugular veins overnight resulted in an elevation of iCSFp to 127 ± 8.86 mmH 2O. Results suggest that the chicken may be a useful animal model to investigate intracranial hypertension and its accompanying headaches known to occur in humans.
Original language | English (US) |
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Pages (from-to) | 537-545 |
Number of pages | 9 |
Journal | Poultry science |
Volume | 85 |
Issue number | 3 |
DOIs | |
State | Published - 2006 |
Externally published | Yes |
Keywords
- Cerebrospinal fluid
- Intracranial hypertension
- Plasma retinol
- Vitamin A deficiency
ASJC Scopus subject areas
- Animal Science and Zoology