Objective To evaluate the application of curved cutter stapler(Contour TM)in the anterior resection of rectal cancer.Methods The clinical data of 57 patients of rectal cancer， who received anterior resection with the curved cutter stapler during the period between November 2005 and August 2006，were analyzed retrospectively.Of the 51 cases who received double stapling technique anterior resection.Of the 6 patients who underwent Hartmann procedure.Results Among above 51patients，41 patients(80.4％)were uhralow anastomosis and no local recurrence occurred.Anastomotic leakage was found in 1 patient，anastomotic bleeding occurred in 3 patients and rectovaginal fistula in 2.In the 6 patients who received Hartmann's procedure，the average distance from cutting and closing line to anal verge was 2.8 cm.Conclusion The ContourTm curved cutter stapler is superior in the anus-preserving surgery of lower rectal cancer when compared with linear stapler.

Objective To evaluate the application of curved cutter stapler(Contour TM)in the anterior resection of rectal cancer.Methods The clinical data of 57 patients of rectal cancer， who received anterior resection with the curved cutter stapler during the period between November 2005 and August 2006，were analyzed retrospectively.Of the 51 cases who received double stapling technique anterior resection.Of the 6 patients who underwent Hartmann procedure.Results Among above 51patients，41 patients(80.4％)were uhralow anastomosis and no local recurrence occurred.Anastomotic leakage was found in 1 patient，anastomotic bleeding occurred in 3 patients and rectovaginal fistula in 2.In the 6 patients who received Hartmann's procedure，the average distance from cutting and closing line to anal verge was 2.8 cm.Conclusion The ContourTm curved cutter stapler is superior in the anus-preserving surgery of lower rectal cancer when compared with linear stapler.

OBJECTIVETo identify the clinical and pathological features of acute myeloid leukemia with B lymphoproliferative disorders.

METHODSThe characteristics of 3 cases of acute monocytic leukemia with untreated chronic lymphocytic leukemia/monoclonal B-cell lymphocytosis were reported with literatures review.

RESULTSThe patients presented with a history of anemia, bleeding and/or fever. Acute monocytic leukemia was diagnosed by bone marrow morphology, cytochemistry and pathology studies. Immunophenotyping by flow cytometry analysis showed a significant population of absolute B-lymphocyte count of > 5×10(9)/L in a patients, similar to that of chronic lymphocytic leukemia.

CONCLUSIONSThe association of acute monocytic leukemia and untreated chronic lymphocytic leukemia/monoclonal B-cell lymphocytosis was a rare event. The abnormal B lymphocytes was likely to be misdiagnosis. Thus, it was important to combine several kinds of laboratory studies, especially flow cytometry to identify this rare disorder.

Aged ; B-Lymphocytes ; pathology ; Female ; Humans ; Leukemia, Monocytic, Acute ; complications ; diagnosis ; pathology ; Lymphocytosis ; complications ; diagnosis ; pathology ; Middle Aged

OBJECTIVETo analyze the complete remission (CR) rate, disease free survival (DFS) and overall survival (OS) of de novo acute myeloid leukemia (AML) patients treated with HA based three drugs induction chemotherapy and to explore the impact of cytogenetic abnormalities on the prognosis.

METHODSTwo hundred and forty-three untreated de novo AML patients were treated with HA based three drugs induction therapy. CR rate, DFS and OS were calculated. One hundred and eighty-four patients who had karyotype results were divided into four or three groups according to SWOG or MRC criteria respectively. Differences in CR rate, DFS and OS among different groups were evaluated.

RESULTSThe CR rate of all the 243 cases was 77.4%. The median DFS of the 188 CR patients was 28.5 (ranged from 1.0 to 153.0) months, DFS rates at 3 and 5 years were 45.4% and 40.2% respectively. The median OS of the 243 patients was 18.4 (range from 0.5 to 154.0) months. OS rates at 3 and 5 years were 36.9% and 31.4% respectively. According to SWOG criteria, CR rate, median DFS and OS were 97.8%, 87.4 months and 89.0 months for the favorable group; 81.9%, 17.6 months and 22.3 months for the intermediate group; 61.5%, 9 months and 11.5 months for the adverse group; and 79.3%, 29.0 months, 19.9 months for the unknown group, respectively. The differences among the four groups were statistically significant (P < 0.001). According to MRC criteria, CR rate, median DFS and OS were 96.1%, 79.9 months, 72.2 months for the favorable group; 80%, 17.6 months, 19.7 months for the intermediate group; and 43.8%, 16.5 months, 12 months for the adverse group, respectively. The differences among the three groups were statistically significant excepting for DFS between intermediate and adverse groups.

CONCLUSIONSHA based triple-drug induction regimens are highly effective in obtaining higher CR rate and longer survival time. Cytogenetics is the important prognostic factor for AML patients and SWOG karyotype subtyping criteria is more appropriate than that of MRC, the differences among the three groups being statistically significant.

Adolescent ; Adult ; Aged ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Child ; Cytarabine ; administration & dosage ; Disease-Free Survival ; Female ; Follow-Up Studies ; Harringtonines ; administration & dosage ; Humans ; Karyotyping ; Leukemia, Myeloid, Acute ; drug therapy ; genetics ; Male ; Middle Aged ; Prognosis ; Remission Induction ; Retrospective Studies ; Treatment Outcome

The aim of this study was to investigate the apoptosis-inducing effect of artemisinin derivative SM1044 on Kasumi-1 cells and its possible mechanism. Kasumi-1 cells were treated with different concentrations of SM1044, the cell viability was evaluated by MTT assay. Cell apoptosis and cell cycle progression were assessed by using flow cytometry with Annexin-V/PI double staining and flow cytometry with PI staining respectively. The expression of apoptosis-related proteins caspase 3, PARP and the fusion protein AML1-ETO were detected by Western blot. The results indicated that SM1044 inhibited cell growth of Kasumi-1 cells in time- and dose-dependent manners. After exposure of Kasumi-1 cells to 1 µmol/L SM1044 for 24 hours, the cell viability was decreased to 50%. IC(50) of SM1044 to Kasumi-1 cells at 48 hours was 0.17 ± 0.067 µmol/L. SM1044 induced cell apoptosis in a caspase-dependent manner, and the apoptotic rate of Kasumi-1 cells increased as SM1044 concentration increased. Flow cytometry with PI staining revealed that SM1044 induced cell cycle arrest, and the proportion of cells in G(0)/G(1) phase increased from 58.33 ± 4.46% to 71.75 ± 2.24% after exposure to 5 µmol/L SM1044 for 24 hours. Western blot showed that SM1044 increased the expression of apoptosis-related proteins cPARP and cleaved caspase 3 and also degraded the AML1-ETO fusion protein. It is concluded that SM1044 can inhibit the proliferation of Kasumi-1 cells, induce cell apoptosis which may be related to the increased level of cleaved PARP and cleaved caspase 3. SM1044 can also induce cell arrest in G(0)/G(1) phase. As the fusion protein AML1-ETO degrades obviously, it can be the potential target of SM1044 in Kasumi-1 cells.
Antineoplastic Agents ; pharmacology ; Apoptosis ; drug effects ; Artemisinins ; pharmacology ; Cell Cycle ; drug effects ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Humans ; Leukemia, Myeloid, Acute ; pathology

OBJECTIVETo explore the safety and efficacy of sorafenib in combination with chemotherapy for the treatment of FLT3 positive acute myeloid leukemia (AML), to highlight the impact of FLT3 mutations and targeting therapy on response of AML.

METHODSThe clinical and laboratory features and the treatment response, especially the safety profile of sorafenib in an acute monocytic leukemia patient with FLT-ITD were reported.

RESULTSThe patient achieved clinical and molecular CR after sorafenib was added to the second course of combination chemotherapy. The side effects of sorafenib were mild and tolerable.

CONCLUSIONThe patient responded well to the combination of sorafenib and standard chemotherapy of AML without significant adverse effects.

Adult ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Benzenesulfonates ; administration & dosage ; Female ; Humans ; Leukemia, Monocytic, Acute ; drug therapy ; genetics ; Niacinamide ; analogs & derivatives ; Phenylurea Compounds ; Pyridines ; administration & dosage ; fms-Like Tyrosine Kinase 3 ; genetics

This study was aimed to explore the effect of arsenic trioxide (ATO) on proliferation and apoptosis of mantle cell lymphoma (MCL) cell lines and the underlying mechanisms of the apoptosis. MCL cell lines (jeko-1, mino, JVM-2) were treated with different concentrations of ATO, then growth profile of these cells were detected by MTT. Apoptosis of ATO-treated jeko-1 cells were detected by flow cytometry with Annexin V-FITC/PI double staining. The loss of mitochondrial membrane potential of ATO-treated jeko-1 cells were detected by FCM with DiOC₆(3) staining. The expressions of cyclin D1 and apoptosis related proteins MCL-1, BCL-2, PUMA, NOXA, cCaspase-3 (cleaved caspase-3), cCaspase-9 (cleaved caspase-9), cPARP (cleaved PARP) were detected by Western blot. The results indicated that ATO inhibited cell growth, induced apoptosis of MCL cells and disrupted mitochondrial membrane potential. ATO could decrease expressions of MCL-1, PUMA and cyclin D1, increase expressions of cPARP, cCaspase-3, cCaspase-9 and the expressions of BLC-2 and NOXA were not changed. It is concluded that ATO can induce cell growth arrest and apoptosis of MCL cells. The mitochondrial pathway plays a very important role in cell apoptosis.
Apoptosis ; drug effects ; Apoptosis Regulatory Proteins ; metabolism ; Arsenicals ; pharmacology ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Gene Expression Regulation, Neoplastic ; Humans ; Lymphoma, Mantle-Cell ; metabolism ; Membrane Potential, Mitochondrial ; Mitochondria ; drug effects ; Oxides ; pharmacology

This study was aimed to summarize and analyze the clinical features and biological characteristics of adult acute T-lymphoblastic leukemia (T-ALL), and compare the efficacy of chemotherapy and transplantation in order to explore the factors influencing the long term survival and prognosis. Twenty-two T-ALL patients, all of whom were initially diagnosed according to MICM classification criteria from May 2000 to May 2010, were enrolled in this study. All patients received VDCLP regimen as the induction chemotherapy. In consolidation stage, some of the patients received allogeneic hematopoietic stem cell transplantation (allo-HSCT) and the others underwent intensive chemotherapy. The clinical and laboratory parameters were summarized and the contribution to survival and efficacy was analyzed by using χ(2) test, Kaplan-Meier method, Cox regression analysis and log-rank test with the aid of SPSS13.0 software. The results showed that: (1) The median age of all 22 patients was 23.5 years (16 - 63 years). 15 patients with splenomegaly had much shorter event-free survival (EFS) period (P = 0.014) and overall survival (OS) period (P = 0.013). The median white blood cell (WBC) count was 148.82 (5.51-546.0) × 10(9)/L. 15 cases out of them had leucocytosis (WBC ≥ 80 × 10(9)/L), whose EFS period (P = 0.021) and OS time (P = 0.050) were reduced significantly. The similar condition was observed in 6 patients whose blood platelet (Plt) count was no more than 30 × 10(9)/L (P = 0.033 for EFS and P = 0.035 for OS, respectively); (2) Immunophenotypic analysis showed that from 22 cases 2 cases were of pro-T, 14 cases of pre-T, 3 cases of cortical-T and 3 cases of medullary-T. Supposing pro-T and pre-T as earlier period immunophenotype, cortical-T and medullary-T as advanced stage immunophenotype, there were significant differences between earlier period and advanced stage patients in terms of EFS and OS (P = 0.035 for EFS and P = 0.028 for OS, respectively); (3) Chromosome karyotype was analyzed in 19 cases at diagnosis, and among them 12 cases had normal karyotypes while abnormal karyotypes were observed in 7 cases. Correlation analysis showed that there were no significant differences between these two groups in time of EFS and OS; (4) The overall complete remission (CR) rate was 72.7 after the induction chemotherapy. The median CR period was 18.0 months. The EFS and OS rate were 57.9 and 67.1 for 1-year, and 23.0 EFS rate and 22.0 OS rate for 3-years, respectively. Six patients received allo-HSCT and the average EFS time and OS time were both 57.8 months, which were significantly longer than those of the intensive chemotherapy group (P = 0.001 and P = 0.002 for EFS and OS, respectively); (5) Cox regression analysis proved that allo-HSCT treatment was the independent favorable prognostic factor. It is concluded that higher CR rate can be achieved by using intensive induction chemotherapy in adult T-ALL, but the long term survival seems poor by chemotherapy only in consolidation treatment stage. Allo-HSCT is the optimal choice to improve the prognosis and the outcome.
Adolescent ; Adult ; Female ; Hematopoietic Stem Cell Transplantation ; Humans ; Induction Chemotherapy ; Leukemia-Lymphoma, Adult T-Cell ; diagnosis ; immunology ; therapy ; Male ; Middle Aged ; Prognosis ; Remission Induction ; Young Adult

OBJECTIVETo investigate the efficacy, adverse events and long-term survival of cyclophosphamide, vindesine, cytarabine, dexamethasone and bleomycin (COAD-B) regimen for relapsed and refractory non-Hodgkin lymphoma (NHL).

METHODSEighty six patients diagnosed with relapsed or refractory NHL were included in our study from January 2007 to January 2013. The chemotherapy regimen was COAD-B, the therapeutic efficacy was evaluated every 2 courses. Once the stable disease (SD) or progress of the disease (PD) achieved, the patients would switch to other second-line regimens.

RESULTSThe overall response rate (ORR) was 67.4%, median remission duration was 13 months (3-51 months); 1-,2- and 4-year overall survival (OS) rates were 75.4%, 56.8% and 40.0%, respectively; 1-, 2- and 4-year progression-free survival (PFS) rates were 50.3%, 39.4% and 27.5%, respectively. The main adverse reaction of patients was myelosuppression. The response to chemotherapy and long- term survival of the relapsed patients were significantly better than that of the refractory ones, and the difference had statistical significance.

CONCLUSIONCOAD-B could be the salvage regimen for relapsed and refractory NHL.

Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Bleomycin ; administration & dosage ; Cyclophosphamide ; administration & dosage ; Cytarabine ; administration & dosage ; Dexamethasone ; administration & dosage ; Disease-Free Survival ; Humans ; Lymphoma, Non-Hodgkin ; drug therapy ; Remission Induction ; Salvage Therapy ; Survival Rate ; Treatment Outcome ; Vindesine ; administration & dosage