Abstract | BACKGROUND: METHODOLOGY: New Zealand white rabbits (1.5-2.0 kg) were given 1.7 microg of TGF-beta2 (n=5) or 2.0 mg of cellular fibronectin (n=4) intrapleurally via a chest tube. The induced pleural fluid was collected and analyzed. The rabbits were sacrificed after 14 days. The pleurodesis was graded macroscopically from 1 (none) to 8 (symphysis > 50%). RESULTS: All rabbits in the TGF-beta2 group developed effective pleurodesis while none in the fibronectin group had scores > 2 ( pleurodesis scores 7.0 +/- 0.6 vs 1.3 +/- 0.3, P < 0.001). Rabbits that received TGF-beta2 produced large amounts of pleural fluid initially (< 4 days). Microscopically, the pleura of rabbits in the TGF-beta2 group showed prominent spindle cell proliferation and collagen deposition, but no significant inflammation or mesothelial proliferation. Pleural tissues of rabbits in the fibronectin group had occasional thin collagen deposits only. The intrapleural administration of 2.0 mg of fibronectin, a downstream product of TGF-beta, did not induce effective pleurodesis, as did the intrapleural administration of TGF-beta2. CONCLUSIONS:
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Authors | Y C Lee, D Malkerneker, C J Devin, P J Thompson, J E Johnson, K B Lane, R W Light |
Journal | Respirology (Carlton, Vic.)
(Respirology)
Vol. 6
Issue 4
Pg. 281-6
(Dec 2001)
ISSN: 1323-7799 [Print] Australia |
PMID | 11844117
(Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Fibronectins
- Transforming Growth Factor beta
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Topics |
- Animals
- Fibronectins
(administration & dosage)
- Pleura
(pathology)
- Pleurodesis
- Rabbits
- Transforming Growth Factor beta
(administration & dosage)
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