The long term outcome of limbal allografts: the search for surviving cells

被引:63
作者
Henderson, TRM [1 ]
Coster, DJ [1 ]
Williams, KA [1 ]
机构
[1] Flinders Univ S Australia, Dept Ophthalmol, Adelaide, SA 5001, Australia
关键词
D O I
10.1136/bjo.85.5.604
中图分类号
R77 [眼科学];
学科分类号
100212 ;
摘要
Background/aims-Limbal allotransplantation is increasingly being used for ocular surface repair in patients with limbal stem cell dysfunction. However, it is uncertain whether donor cells survive long term on the ocular surface and whether patients maintain the early benefits of the procedure. The aims of this study were to investigate the long term outcome of clinical limbal allografts and to correlate outcome with donor cell survival. Methods-Five patients who had undergone allotransplantation-four keratolimbal allografts and one tarsoconjunctival allograft-from 3-5 years previously, and for whom residual frozen donor ocular tissue was available, were reviewed. Survival of donor cells lifted from the recipient ocular surface by impression cytology was investigated by DNA fingerprinting using primers detecting variable nucleotide tandem repeat sequences. Recipient buccal cells and scleral samples from the remnant donor eye were used to genotype recipients and donors, respectively. Polymerase chain reaction products were sized by Genescan analysis. Results-An objective long term benefit from the procedure (improved Snellen acuity, reduced frequency of epithelial defects, reduced vascularisation, and scarring) was recorded for four patients. Some subjective benefit was also reported. However, in no instances were donor cells recovered from the ocular surface at 3-5 years post-graft. Initial experiments to examine sensitivity indicated that any surviving donor cells must have constituted less than 2.5% of cells sampled. Conclusion-Limbal stem cell allotransplantation can provide long term benefits, as measured by objective criteria. However, such benefits do not necessarily correlate with survival of measurable numbers of donor cells on the ocular surface.
引用
收藏
页码:604 / 609
页数:6
相关论文
共 22 条
[1]   LIMBAL AUTOGRAFT RECONSTRUCTION AFTER CONJUNCTIVAL SQUAMOUS-CELL CARCINOMA [J].
COPELAND, RA ;
CHAR, DH .
AMERICAN JOURNAL OF OPHTHALMOLOGY, 1990, 110 (04) :412-415
[2]   SURGICAL-MANAGEMENT OF OCULAR SURFACE DISORDERS USING CONJUNCTIVAL AND STEM-CELL ALLOGRAFTS [J].
COSTER, DJ ;
AGGARWAL, RK ;
WILLIAMS, KA .
BRITISH JOURNAL OF OPHTHALMOLOGY, 1995, 79 (11) :977-982
[4]   Do transplanted corneal limbal stem cells survive in vivo long term? Possible techniques to detect donor cell survival by polymerase chain reaction with the amelogenin gene and Y-specific probes [J].
Henderson, TRM ;
McCall, SH ;
Taylor, GR ;
Noble, BA .
EYE, 1997, 11 (6) :779-785
[5]  
HERMAN WK, 1983, OPHTHALMOLOGY, V90, P1121
[6]  
Holland EJ, 1996, CORNEA, V15, P549
[7]   INDIVIDUAL-SPECIFIC FINGERPRINTS OF HUMAN DNA [J].
JEFFREYS, AJ ;
WILSON, V ;
THEIN, SL .
NATURE, 1985, 316 (6023) :76-79
[8]   LIMBAL TRANSPLANTATION IN THE MANAGEMENT OF CHRONIC CONTACT-LENS-ASSOCIATED EPITHELIOPATHY [J].
JENKINS, C ;
TUFT, S ;
LIU, C ;
BUCKLEY, R .
EYE, 1993, 7 :629-633
[9]  
KENYON KR, 1989, OPHTHALMOLOGY, V96, P709
[10]  
KINOSHITA S, 1982, INVEST OPHTH VIS SCI, V23, P73