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Experimental pseudocyst model resembling human ganglion
Author(s) -
TANIGUCHI Toshiko,
HARADA Teruichi,
OHBA Norihiro,
MOTOMURA Hisashi,
MAEDA Mitsuyo,
ISHII Masamitsu
Publication year - 2008
Publication title -
the journal of dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 65
eISSN - 1346-8138
pISSN - 0385-2407
DOI - 10.1111/j.1346-8138.2008.00420.x
Subject(s) - ganglion , anatomy , biology
There is no animal model of ganglion. We describe a simple and reproducible animal model of pseudocystic diseases. First, we experimented to establish a pseudocystic model. We used cylindrical glass implants (6 mm diameter, 30 mm long) to create fibrous capsules in rats. The implants were inserted in the subcutaneous tissue in the dorsum of rats. Sixty implants were carried out (two implants per rat). Twelve weeks after implantation, the glass implants were removed and 0.5 mL sodium hyaluronate solution was injected into each cavity. Next, we tested the model by histological examination after OK‐432 administration. Microscopic examination revealed that the wall was composed of a layer of collagenous fibers similar to those noted in ganglia; the lumen was retained for 3 weeks. Histopathological changes after OK‐432 administration showed nonspecific inflammatory response induced by OK‐432, resulting in in vivo activation of many inflammatory cells and then fast and reliable closure of cavities. No harmful reactions to OK‐432 were observed histopathologically. These data suggest that our experimental cyst is a suitable model for studying pseudocystic diseases. This model can be used for research evaluating safe drug doses, conducting therapeutic comparison of several agents, and histopathological time course studies of the affected tissues. OK‐432 administration on this model showed the potential of one of the ideal agents to treat pseudocystic lesions like ganglion.