PMID- 8485475 OWN - NLM STAT- MEDLINE DCOM- 19930604 LR - 20151119 IS - 0268-3369 (Print) IS - 0268-3369 (Linking) VI - 11 IP - 4 DP - 1993 Apr TI - Detection of residual host cells after bone marrow transplantation using non-isotopic in situ hybridization and karyotype analysis. PG - 279-84 AB - Karyotype analysis and interphase cytogenetics by means of non-radioactive in situ hybridization (NISH) with Y and X-specific probes were used to detect residual host cells in BM of 18 male patients who had received a BMT from their sisters. All patients but one had a malignant blood disease; 17 patients were clinically in continuous remission at the time of the investigations and throughout the follow-up period. No host cells were detected by karyotype analysis in patients who were in clinical remission. NISH with a biotinylated Y-specific probe showed residual host cells in 16 of the 17 patients in clinical remission. In samples from three patients the existence of host cells was further confirmed by revealing the XY-containing cells with two-color fluorescence in situ hybridization (FISH) using X- and Y-specific probes on direct BM smears showed > 3% residual host cells in 50% of the samples studied at or later than 2 months post-BMT. On conventional cytogenetic preparations < 1% Y-specific cells were detected in all but two samples at > or = 2 months post-BMT. There was no difference in the proportion of host cells between patients conditioned with total body irradiation and CY and those who received busulphan and CY. The recipient's stromal or epithelial cells in the aspirates probably account for most of the host cells detected. In conclusion, small numbers of residual host cells detected by interphase cytogenetics with a Y-specific probe do not indicate an imminent relapse.(ABSTRACT TRUNCATED AT 250 WORDS) FAU - Wessman, M AU - Wessman M AD - Department of Medical Genetics, University of Helsinki, Finland. FAU - Popp, S AU - Popp S FAU - Ruutu, T AU - Ruutu T FAU - Volin, L AU - Volin L FAU - Cremer, T AU - Cremer T FAU - Knuutila, S AU - Knuutila S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Bone Marrow Transplant JT - Bone marrow transplantation JID - 8702459 RN - 0 (Biomarkers) SB - IM MH - Adolescent MH - Adult MH - Biomarkers/analysis MH - Bone Marrow/*pathology MH - Bone Marrow Purging MH - Bone Marrow Transplantation/mortality/*pathology MH - Cell Survival MH - *Chimera MH - Female MH - Graft Survival MH - Humans MH - *In Situ Hybridization MH - *Karyotyping MH - Leukemia/pathology/surgery MH - Male MH - Middle Aged MH - Nuclear Family MH - Remission Induction MH - Transplantation, Homologous MH - Treatment Outcome MH - Y Chromosome EDAT- 1993/04/01 00:00 MHDA- 1993/04/01 00:01 CRDT- 1993/04/01 00:00 PHST- 1993/04/01 00:00 [pubmed] PHST- 1993/04/01 00:01 [medline] PHST- 1993/04/01 00:00 [entrez] PST - ppublish SO - Bone Marrow Transplant. 1993 Apr;11(4):279-84.