Abstract:
:As an alternative to drug immunosuppression, attempts at inducing donor-specific tolerance by intrathymic (IT) inoculations to transplant recipient of donor origin alloantigenic products has proven very promising. Using fiber optic thoracoscopy, a technique for the study of this phenomena was developed for the dog. We show an approach to the dog thymus using fiber optics for injection of bone marrow (BM) cells as the tolerogen. Bone marrow was retrieved from the donor beagles and purified using an automated Ficoll-Paque gradient technique. The purified cellular suspension was injected into the thymus through a small intercostal incision with the use of an injection needle port guided by the use of a rigid fiberoptic scope. To demonstrate engraftment, supravital staining with Fluorescein Diacetate of the BM cells was performed prior to inoculation. Immunofluorescence of cryostat sections obtained at necropsy confirmed the presence of viable BM cells up to several days after transplantation. Results of this study show that the thoracoscopic approach to the thymus can be safely and effectively used for IT inoculation studies in dogs.
journal_name
Cell Transplantjournal_title
Cell transplantationauthors
Schachner RD,Qian T,Strasser S,Brendel MD,Alejandro R,Mintz DHdoi
10.1177/096368979400300413subject
Has Abstractpub_date
1994-07-01 00:00:00pages
349-50issue
4eissn
0963-6897issn
1555-3892journal_volume
3pub_type
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