ABSTRACT
<p><b>OBJECTIVE</b>To study the regulatory effects of psoralen (PSO) plus ultraviolet A (UVA), which is PUVA, on cell apoptosis of human leukemia cell line NB4 and signal pathway of cell apoptosis.</p><p><b>METHODS</b>Human leukemia cell line NB4 was cultured in vitro. The NB4 cells were treated with PSO extracted from Chinese medicine psoralea fruits at different concentrations (0, 5, 10, 20 and 40 microL) plus UVA of wave length 360 nm at different irradiation time points (0 and 5 min). The apoptosis ratio was detected by flow cytometry (FCM). The ultrastructure changes were observed using transmission electron microscope (TEM). The expressions of Caspase-8 and Caspase-8 protein were detected by immunocytochemical method (ICC).</p><p><b>RESULTS</b>After treatment of PSO at different concentrations with a 0 and 5-min exposure of UVA, the apoptosis rate of NB4 cells increased dose-and time-dependently, and was up to peak after treatment of PSO at 40 microg/mL with 5-min exposure of UVA. An interaction was shown between the two factors (P <0. 01). There were obvious morphological apoptosis of NB4 cells under TEM after treated with PUVA. The expressions of Caspase-3 and Caspase-8 protein were up-regulated by PSO, UVA, and PUVA, but the effects of PUVA on Caspase-3 protein were stronger than PSO and UVA at 12 h time-dependently (P <0.01).An interaction was shown between the concentration of PSO and time of UVA (P <0.01).</p><p><b>CONCLUSIONS</b>The optimal combination of PUVA was PSO in 40 microg/mL and 5-min exposure of UVA. PUVA could induce the apoptosis of NB4 cells and in vitro activate Caspase-3 and Caspase-8 genes.</p>
Subject(s)
Humans , Apoptosis , Radiation Effects , Caspase 3 , Metabolism , Caspase 8 , Metabolism , Cell Line, Tumor , Ficusin , Pharmacology , Therapeutic Uses , Photochemotherapy , Methods , Ultraviolet RaysABSTRACT
<p><b>OBJECTIVE</b>To report the results of curative and adverse effects of compound huangdai tablet (CHDT) as induction therapy for 193 patients with acute promyelocytic leukemia (APL).</p><p><b>METHODS</b>CHDT was administered 1.25 g orally three times a day after meal for three days, then the dosage was gradually increased to 7.5 g/d.</p><p><b>RESULTS</b>One hundred and ninety-three patients achieved complete remission (CR), 78.8% of whom in 30 to 60 days with an average time of 44.3 d. No serious infection, bleeding or DIC occurred during the treatment course. The major adverse effects were gastrointestinal symptoms. There was no change in lanine transaminase, urea, creatinine or electrocardiographic QTc interval in 110 APL patients observed before and after the treatment.</p><p><b>CONCLUSION</b>CHDT therapy is a modality of higher CR rate, good safety and tolerance without bone marrow suppression for APL patients.</p>
Subject(s)
Adolescent , Adult , Aged , Child , Child, Preschool , Female , Humans , Male , Middle Aged , Young Adult , Follow-Up Studies , Leukemia, Promyelocytic, Acute , Drug Therapy , Phytotherapy , Plant Preparations , Therapeutic Uses , Treatment OutcomeABSTRACT
The progress in the research of pharmacological mechanism of anti-fibrosis traditional Chinese drugs and the effective components is summarized. It's demonstrated by pharmacological experiments that anti-fibrosis traditional Chinese drugs can inhibit the cell proliferation, regulate the cytokines and ECM, and intervente in the signal transduction.