# STRUCTURE AND METABOLISM OF VASCULARIZED ALLOGRAFTS

> **NIH NIH R01** · CASE WESTERN RESERVE UNIVERSITY · 1991 · $300,919

## Abstract

Vascularized bone grafts are successful in compromised hosts and host beds,
such as are present following chemotherapy, immunosuppression or radiation
therapy.  Because of this, there is likely to be increasing clinical demand
for vascularized bone grafts which can only be met by using allogeneic
bone.

Our previous research has shown that vascularized autografts are superior
to nonvascularized bone grafts; the immunogenicity of vascularized
allografts affect their incorporation; and immunosuppression enhances the
biology of a maximally immunogenic graft.  The proposed research plan is an
extension of these observations.  Major histocompatibility antigen (MHC)
matched and mismatched vascularized allografts in dogs receiving
cyclosporin for an extended, but finite, period will be studied by
mechanical, morphologic and metabolic techniques.  The early cellular
response to MHC matched and mismatched grafts will be defined and
correlated with graft biology to understand the systemic and local
immunological rejection process, and to provide a basis for comparison with
transplants of parenchymal organs.  Specific methods of reducing
vascularized allograft immunogenicity, that is gamma and ultraviolet
radiation, will be evaluated.  The mechanical, morphological and metabolic
properties of MHC-mismatched vascularized allografts immunologically
modified by these methods will be studied at 3 and 6 months post-
transplantation.

The methodologies used in our studies have provided significant
correlations between tissue antigen compatibility, graft strength and
turnover, and bone formation.  New additional analytical methodologies will
further extend our understanding of bone transplantation biology.
Specifically histomorphometric analysis of the cancellous bone and bone
marrow, DNA "fingerprinting" of graft cells to identify their origin, and
functional assays of the local and systemic immune response to allografts
will provide important data to understand the complex mechanisms of the
host response to vascularized bone allografts.

These analyses will establish a comprehensive perspective of the critical
parameters determining the fate of a vascularized bone allograft.  Specific
protocols, based on this work, could be developed for useful clinical
applications.

## Key facts

- **NIH application ID:** 3155898
- **Project number:** 2R01AR030833-10
- **Recipient organization:** CASE WESTERN RESERVE UNIVERSITY
- **SAM.gov UEI:** HJMKEF7EJW69
- **Principal Investigator:** VICTOR M GOLDBERG
- **Activity code:** R01 (R01, R21, SBIR, etc.)
- **Funding institute:** NIH
- **Fiscal year:** 1991
- **Award amount:** $300,919
- **Award type:** 2
- **Project period:** 1982-09-30 → 1994-08-31

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/3155898

## Citation

> US National Institutes of Health, RePORTER application 3155898, STRUCTURE AND METABOLISM OF VASCULARIZED ALLOGRAFTS (2R01AR030833-10). Retrieved via MORVS 2026-10-24 from https://api.morvs.ai/grant/nih/3155898. Licensed CC0.

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