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Biomedical subjects

L Hui

Publications and source records attributed to L Hui.

25 records · Page 2Linked to original sources
PubMed1996

Ifosfamide, carboplatin, etoposide, and paclitaxel chemotherapy: a dose-escalation study.

Ifosfamide, carboplatin, cisplatin, etoposide, and paclitaxel are chemotherapeutic agents active in treating many malignant diseases. The ICE combination (ifosfamide/carboplatin [or cisplatin]/etoposide) has been studied in breast cancer, small cell and non-small cell lung cancer, testicular cancer, lymphoma, and other malignancies with promising results. We conducted a dose-escalation study of paclitaxel in combination with ICE (ICE-T) to evaluate the toxicity and define the maximum tolerated dose of paclitaxel. To date, 24 patients have been treated with ICE-T. Patients had to have no or minimal prior chemotherapy, an Eastern Cooperative Oncology Group performance status of 0 or 1, and adequate bone marrow, liver, and kidney function. The doses of ICE were as follows: ifosfamide 1.25 g/m2/d days 1 to 3, carboplatin 300 mg/m2 day 1, and etoposide 80 mg/m2/d days 1 to 3. Paclitaxel was given at a dose of 120 mg/m2 to five patients, 135 mg/m2 to five patients, 150 mg/m2 to three patients, and 175 mg/m2 to 11 patients. All patients received granulocyte colony-stimulating factor support. The most common side effect was neutropenia. Grade 4 neutropenia and thrombocytopenia occurred during 34% and 20% of 94 cycles, respectively, with leukopenic fever occurring during 14% of cycles. No treatment-related death or sepsis occurred due to brief nadir durations of 3.5 days for neutropenia and thrombocytopenia. Other toxicities were mostly mild to moderate and did not require dose modification, although alopecia was universal. Nine patients (100%) with metastatic breast cancer and four (67%) with soft tissue sarcoma have attained documented objective responses with four complete remissions (one breast cancer and three sarcoma patients). The maximum tolerated dose of paclitaxel has not yet been defined, and the study is ongoing. In conclusion, this pilot study showed that ICE-T is safe and tolerable. The response to ICE-T is encouraging and warrants further study with this regimen.

Adult↗
PubMed1995

An STS-based map of the human genome.

A physical map has been constructed of the human genome containing 15,086 sequence-tagged sites (STSs), with an average spacing of 199 kilobases. The project involved assembly of a radiation hybrid map of the human genome containing 6193 loci and incorporated a genetic linkage map of the human genome containing 5264 loci. This information was combined with the results of STS-content screening of 10,850 loci against a yeast artificial chromosome library to produce an integrated map, anchored by the radiation hybrid and genetic maps. The map provides radiation hybrid coverage of 99 percent and physical coverage of 94 percent of the human genome. The map also represents an early step in an international project to generate a transcript map of the human genome, with more than 3235 expressed sequences localized. The STSs in the map provide a scaffold for initiating large-scale sequencing of the human genome.

Animals↗
PubMed1995

Immuno-endocrine interactions in early pregnancy.

First we recall briefly the status of inflammatory cytokines in the early implantation period. We then describe the status of leukaemia inhibiting factor (LIF) production in an in-vitro, relatively short-term, human decidual explant culture system. We show that in most infertile women with recurrent implantation failure following successful in-vitro fertilization, LIF production is statistically much lower than normal. Other parameters of LIF production in vitro are summarized briefly, and the effects of RU486 are shown. The TH2 status of normal pregnancy is described, together with the production of TH2 cytokines by decidua and placenta. These cytokines are deficient in the CBAXDBA/2 model of murine spontaneous early pregnancy loss. The defect can be corrected by alloimmunization, and more importantly by the injection of tau interferon. The significance of these data for early pregnancy signalling is discussed.

Animals↗
PubMedDate not supplied

Enhancement of the cytolytic effect of anti-bacterial cecropin by the microvilli of cancer cells.

A comparison between IC50s of cecropin B on tumor cells such as KG-1 leukemia and Ags stomach carcinoma and non-tumor cells like fibroblasts and red blood cells was conducted. The IC50s of cecropin B for KG-1 leukemia and Ags carcinoma cells were 20.8 +/- 2.3 microM (MTT) and 18.9 +/- 3.3 microM (trypan blue) and 16.0 +/- 3.5 microM (MTT) & 15.3 +/- 3.7 microM (trypan blue), respectively. The IC50 of cecropin B for 3T6 fibroblast cells was 92.0 +/- 9.1 microM by MTT assay and the HE50 of cecropin B for human red blood cells was 180.0 +/- 20.1 microM at OD414nm. The cytolysis induced by cecropin peptides was more effective for the cancer cells than for the normal cells. Based on the observations from scanning electron microscopy, this may mainly due to the cancer cells having a high population of the irregular microvilli on the cell surface. Since peptides bound to the cell membrane are non-specific, the attraction of peptides by microvilli may be one of the main driving forces before the lysis in membrane bilayers can be efficiently initiated.

Animals↗