Abstract:
:Expression of the mdr1 (multidrug resistance), mrp (multidrug resistance associated protein), and lrp (lung resistance related protein) genes is associated with transport related MDR (multidrug resistance). We quantified mRNA levels of these genes using competitive reverse transcription polymerase chain reaction (RT-PCR) in 128 samples of leukaemic cells from 92 patients with acute myelogenous leukaemia (AML). There was a wide variation between the samples in mRNA levels of all three genes. The mean mdr1 mRNA level was 1.3 transcripts per cell (range undetectable to 15.8), the mean mrp level was 7.9 (range 0.1-36.2) and mean lrp 3.9 (range 0.1-29). Lrp mRNA levels were higher in samples drawn at diagnosis from the 15 patients with resistant disease than from the 37 with chemosensitive disease (4.9 SD 3.1 v 2.9 SD 2.3, P = 0.016). Neither mdr1 nor mrp mRNA levels were predictive for response to chemotherapy. In samples from patients who had received chemotherapy, those that had received mitoxantrone (n = 24) had higher lrp mRNA levels (mean 4.8, SD 2.5) than those that had not (n = 20, mean 2.8, SD 2.4, P = 0.012). In conclusion, the results indicate that lrp expression is associated with inferior response to chemotherapy in AML and that lrp expression increases after exposure to mitoxantrone.
journal_name
Br J Haematoljournal_title
British journal of haematologyauthors
Xu D,Areström I,Virtala R,Pisa P,Peterson C,Gruber Adoi
10.1046/j.1365-2141.1999.01611.xsubject
Has Abstractpub_date
1999-09-01 00:00:00pages
627-33issue
3eissn
0007-1048issn
1365-2141pii
bjh1611journal_volume
106pub_type
杂志文章abstract::The past decade has seen an explosion of interest in the epigenetics of cancer, with an increasing understanding that this form of genomic modification plays a critical role in pathogenesis. The malignant phenotype results from a step-wise increase of both genetic abnormalities and epigenetic modifications, leading to...
journal_title:British journal of haematology
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journal_title:British journal of haematology
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doi:10.1111/j.1365-2141.1994.tb05128.x
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pub_type: 杂志文章,评审
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abstract::The clinical significance of Aspergillus fungaemia in the setting of a deep-seated aspergillosis has not been clearly established. Among 107 microbiologically documented Aspergillus infections in patients with haematological diseases observed over a 17-year period, blood cultures grew Aspergillus species from 10 cases...
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abstract::We have previously shown that allogeneic bone marrow transplantation (BMT) with cryopreserved donor marrow cells can be used without prolonging the engraftment time or interfering with the reconstitution of haemopoiesis. In this report we extend our initial observations of the first 40 patients who underwent allogenei...
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journal_title:British journal of haematology
pub_type: 杂志文章
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journal_title:British journal of haematology
pub_type: 杂志文章,多中心研究
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abstract::The question as to whether autologous stem cell transplantation (SCT) after consolidation chemotherapy improves the probability of survival of patients with acute myeloid leukaemia (AML) in first remission has not been settled. Here, we present the results of a phase III study conducted in newly diagnosed adult AML pa...
journal_title:British journal of haematology
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journal_title:British journal of haematology
pub_type: 杂志文章
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journal_title:British journal of haematology
pub_type: 杂志文章
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abstract::A robust method for obtaining chromosome preparations from individual haemopoietic colonies in semi-solid media is described. The accumulation of metaphases and the hypotonic treatment of cells were carried out in the culture dish and individual colonies were transferred onto poly-L-lysine-treated slides and fixed ste...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1999.01428.x
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journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1996.00388.x
更新日期:1996-03-01 00:00:00
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journal_title:British journal of haematology
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journal_title:British journal of haematology
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journal_title:British journal of haematology
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abstract::The Complement 1 trial investigated the efficacy and safety of ofatumumab + chlorambucil with chlorambucil monotherapy in patients with previously untreated chronic lymphocytic leukaemia (CLL). On long-term follow-up in the chemoimmunotherapy arm vs. the chemotherapy arm there was an estimated 12% (not significant) an...
journal_title:British journal of haematology
pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:British journal of haematology
pub_type: 杂志文章
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journal_title:British journal of haematology
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journal_title:British journal of haematology
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:British journal of haematology
pub_type: 杂志文章
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abstract::In an effort to clarify the effect of human T cell leukaemia virus type I (HTLV-I) infection on virus-specific CD8+ cytotoxic T cells, a herpes simplex virus-specific CD8+ cytotoxic T cell clone was infected with HTLV-I in vitro. The cytotoxic activity of the clone was found to have declined early after HTLV-I infecti...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1991.tb08576.x
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journal_title:British journal of haematology
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doi:10.1046/j.1365-2141.1998.00804.x
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abstract::We report a case of persistent infection with human parvovirus B19 (PVB19), manifesting clinically as recurrent agranulocytosis and in bone marrow biopsy as recurrent pure granulocytic aplasia. Persistence of parvovirus infection was documented by the presence of PVB19 DNA and anti-PVB19-IgM antibodies in the serum fo...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1992.tb08894.x
更新日期:1992-02-01 00:00:00