J. L. Vaerman

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Quantification of mRNAs from extremely small human samples remains a challenge. Requiring minimal amounts of tissue and no post-reaction manipulation, real-time reverse transcriptase-polymerase chain reaction (RT-PCR) is an attractive method to quantitatively assess the expression of rare mRNAs. We evaluated the applicability of the technique on RNA(More)
We have examined the effect of BCR/ABL junctional antisense phosphodiester oligodeoxyribonucleotides (ODNs) on BV173 and other chronic myeloid leukemia (CML) cell lines. Various control ODNs were used to understand the mechanism of the observed antiproliferative effect. Not only the antisense ODNs but also several control ODNs inhibit the proliferation of(More)
Aggressive mastocytosis is a form of systemic mast cell disease (SMCD) characterized by organ infiltration, bone lesions, eosinophilia and lymphadenopathies. Here we report a patient with unusual clinical features, namely osteolysis without other bone lesions commonly found in SMCD, major eosinophilia and cerebral infarction. The mast cells exhibited a(More)
Antisense oligodeoxyribonucleotides (ODNs) are now being extensively investigated in an attempt to achieve cell growth suppression through specific targeting of genes related to cell proliferation, despite increasing evidence of non-antisense cytotoxic effects. In the context of anti-BCR/ABL antisense strategies in chronic myeloid leukemia, we have(More)
Nine asymptomatic members of a family of Belgian origin, spanning three generations, present typical features of heterozygous beta-thalassemia. Since no mutation was detected with a large panel of oligonucleotide probes, the thalassemia gene was investigated by direct sequencing of DNA segments amplified by the polymerase chain reaction. A T-->C transition(More)
Bone marrow samples of 16 patients (two adults and 14 children) with a B lineage acute lymphoblastic leukaemia (ALL), and in whom Ig heavy chain gene rearrangements were detectable at diagnosis using polymerase chain reaction (PCR), were studied during evolution using PCR. The VDJ junctional fragment of the Ig heavy chain rearranged gene was amplified at(More)
There is now strong evidence that the BCR-ABL gene product of the Philadelphia chromosome (P210) plays a crucial role in the pathogenesis of chronic myeloid leukemia (CML). We have previously shown that introduction of antisense oligonucleotides into K562 cells could transiently block the expression of P210 and specifically inhibit cellular growth in(More)
STUDY QUESTION What is the risk of finding malignant cells in cryopreserved ovarian tissue from sarcoma patients? SUMMARY ANSWER Minimal disseminated disease (MDD) was not detected in frozen-thawed ovarian tissue from 26 patients by any of the sensitive methods applied. WHAT IS KNOWN ALREADY In case of leukemia, the risk of malignant cell transmission(More)
The evidence that the bcr-abl gene product (P210) of the Philadelphia chromosome plays a crucial role in the pathogenesis of chronic myeloid leukemia (CML), and the absence of the bcr-abl fused transcript in non-malignant cells makes this messenger RNA an ideal candidate for antisense strategies in CML. To inhibit the expression of the bcr-abl gene, and to(More)