TY  - JOUR
AU  - Jonard, M.
AU  - André, F.
AU  - Giot, P.
AU  - Weissen, F.
AU  - Van der Perre, R.
AU  - Ponette, Q.
TI  - Thirteen-year monitoring of liming and PK fertilization effects on tree vitality in Norway spruce and European beech stands
JO  - European journal of forest research
VL  - 129
SN  - 1612-4669
CY  - Berlin
PB  - Springer
M1  - PreJuSER-12042
SP  - 1203 - 1211
PY  - 2010
N1  - This study was conducted with the support of the European Commission (regulation 3528) and of the Walloon Region (DGARNE/DNF) through the framework programs on forest research 1999-2004 and 2004-2009. We would like to thank Frederic Hardy and Francois Plume for their technical help, Francois Herman for the management of the database and Karine Henin for carrying out the chemical analyses.
AB  - Liposarcomas are a phenotypical heterogeneous group of tumors divided into four main subtypes: well-differentiated, dedifferentiated, myxoid/round cell, and pleomorphic. The aim of this study was to compare DNA sequence copy number changes of these subtypes as investigated by comparative genomic hybridization in 36 patients. Comparative genomic hybridization revealed genomic imbalances in tumors of 27 patients (mean 5.6 imbalances per tumor). The most frequent gains were within single regions of 1q, 12q, and 13q. We found a significant correlation of poor overall survival and gain of 13q21 (P=0.0221), 13q22 (P=0.0341), 13q31 (P=0.0410), and 13q32 (P=0.0074). The univariate Cox regression analysis revealed an increased risk of tumor-related death for patients whose liposarcomas possess with gains of 13q21 and 13q32 simultaneously (P=0.010; RR=7.1; 95% CI 1.6-31.7). Furthermore, 12 high-level amplifications were found in tumors of seven patients. In four cases 12q14-q15 and in two cases 13q32-q33 were amplified. We identified in different liposarcoma subtypes characteristic genomic changes: Gains and high-level amplifications of 12q occurred in all 11 investigated well-differentiated liposarcomas, and these changes were often present simultaneously with gains of 1q (mean 5.5 changes). In the two dedifferentiated liposarcomas, gains of 1q in both liposarcomas, and a high-level amplification of 13q were striking. Only eight of the 17 patients with myxoid/round cell liposarcomas showed changes in DNA copy number (mean 3.4 imbalances). In four of these eight cases gains of 13q occurred. The six pleomorphic liposarcomas possessed the most frequent genomic imbalances (mean number 16.3) of all liposarcoma subtypes investigated. These imbalances were in almost all chromosomal regions detected predominantly as over-representations of chromosomes 1, 5p, 13q, and 22q. Summarizing, all subtypes but well-differentiated liposarcomas showed gains of 13q, which were associated with a poor prognosis.
KW  - Adult
KW  - Aged
KW  - Chromosome Aberrations
KW  - Chromosomes, Human, Pair 1: genetics
KW  - Chromosomes, Human, Pair 12: genetics
KW  - Chromosomes, Human, Pair 13: genetics
KW  - Female
KW  - Humans
KW  - Liposarcoma: genetics
KW  - Liposarcoma: pathology
KW  - Male
KW  - Middle Aged
KW  - Nucleic Acid Hybridization: methods
KW  - Prognosis
KW  - Survival Analysis
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:15540119
UR  - <Go to ISI:>//WOS:000283155900021
DO  - DOI:10.1007/s10342-010-0410-3
UR  - https://juser.fz-juelich.de/record/12042
ER  -