Ophthalmology

New PDF release: Adequate HLA Matching in Keratoplasty (Developments in

By R. Sundmacher, F. Bandello

ISBN-10: 3805574878

ISBN-13: 9783805574877

‘Immunologic privilege’ of the cornea and anterior chamber has, in general, been believed to be a enough warrantly for survival of the donor cornea. If this failed, it used to be inspiration that adjunctive immunomodulating brokers might compensate. however the query of ways to take care of larger tolerance and more secure long term survival of corneal grafts after withdrawal of a effective immunomodulating safeguard nonetheless remained unanswered. the answer's human leukocyte antigens (HLA) matching. during this quantity, immunological and medical elements are mentioned by means of popular scientific and experimental immunologists in addition to skilled keratoplasty surgeons. those specialists finish that HLA matching is, actually, a helpful adjunct for long term survival of corneal grafts not just in these at excessive chance yet particularly additionally in sufferers at general chance. This quantity opens new pathways in the direction of the profitable program of HLA matching to keratoplasty surgeons, experimental and scientific immunologists and cornea financial institution officials, even as performing as an reduction to ophthalmologists whilst discovering the root to thoroughly suggest their keratoplasty sufferers.

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Additional resources for Adequate HLA Matching in Keratoplasty (Developments in Ophthalmology, 36)

Sample text

Results of monovariate analyses; failure is any immunological rejection episode, reversible or irreversible Factor log-rank p value % clear grafts at 5 years Casesa Vascularization: high/low riskb HLA-A, -B mism: 3–4/0–2 (see fig. 3) HLA-DR mism: 1–2/0 (see fig. 032 71/89 58/75 71/85 54/74 66/76 851/830 207/642 214/066 144/707 436/415 mism ϭ Mismatches; p value ϭ significance of the difference between the 2 curves. a Cases: For vascularization, 851/830 indicates 851 high-risk cases and 830 low-risk cases.

Those factors also stimulate the migration and accumulation of antigen-presenting Langerhans’ cells (LCs) in the corneal epithelium that lead to the activation of T cells and subsequent transplant rejection [53, 54] and the appearance of lymphatic vessels. The induction of LCs and lymphatics, rather than the presence of blood vessels, may be the crucial factors responsible for abolishing the immune privilege of the corneal graft bed. Histocompatibility and Corneal Transplantation 37 Mismatched HLA class I antigens (HLA-A and -B) are believed to be the main targets for cytotoxic T lymphocytes and alloantibodies.

S. s. s. s. s. s. s. 1 ANOVA, ␹2 test. s. ϭ not significant; kk ϭ keratoconus; Fed ϭ Fuchs endothelial dystrophy; other ϭ bullous keratopathy or non-herpetic avascular scars; Ecd ϭ endothelial cell density. 4). Grafts All grafts were preserved in organ culture according to the guidelines of the European Eye Bank Association [2]. Preoperative evaluation of the graft endothelium was performed in hypotonic solution under the phase-contrast microscope the day before penetrating keratoplasty [3]. This examination was proven to deliver reproducible results [4].

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Adequate HLA Matching in Keratoplasty (Developments in Ophthalmology, 36) by R. Sundmacher, F. Bandello


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