Objective To introduce the advance of the diagnosis and tretment of breast cancer(BC). Methods Reveiwing the recently world reference regarding to the diagnosis and treatment of BC was done for making an advancing paper of BC. Results The NF ?B and telomerase may be a new target of anti cancer of breast. The ECT, fiberoptic mammaroductoscopy, examine of micrometastase of BC, immuno cell chemical examine were progressing in the diagnosis of BC. The advance of the treatiment of BC included breast conservative surgery, lymphatic mapping and sentinel node biopsy, biochemical response modifier, new adjuvant chemotherapy, TAM and 1,25 (OH) 2D 3 treatmen. Conclusions The idea and mould of the diagnosis and treatment of BC have advanced obviously.

Sera from 80 patients suffering from gastritis and/or digestive ulcer were examined for IgG, IgA and IgM to Helicobacter pylori by enzyme-linked immunosorbent assay (ELISA). Anti-H. pylori IgG and IgA in serum could be used for diagnosis of H. pylori infection, but the former had good sensitivity (92.0%) and the latter had a great specificity (94.4%). Serum anti-H, pylori IgM level was not associated with H. pylori infection. There were no remarkable relationship between H. pylori infection degree arid levels of anti-H, pylori IgG IgA. The positive percentage of anti-H, pylori IgG of health population deceased after 50 years old but the anti-H, pylori IgA increased.

Objectiver　 To establish murine breast precancerous model and evaluate the effect of exogenous estrogen and tamoxifen.　 Method　 50 female Wistar rats were divided into contol group (n＝12), the other 38 received low dose carcinogen (DMBA) by gastrogavage, and then divided into DMBA group (common diet,n＝8); DMBA+DES group(DES added chow,n＝15); and DMBA+TAM group (TAM added chow,n＝15). 3 months later, the status of breast hyperplasia, AgNOR and DNA content were measured. 　Results　 All indexs in control group and DMBA+TAM group were normal.However,in DMBA group and DMBA+DES group,the breast hyperplasia rate was 75%, 93.3%, AgNOR was 3.71±0.76, 5.60±0.42, DNA was 88.59±7.17, 137.75±3.13 respectively.Compared with control group and DMBA+TAM group, the differences of indexes in DMBA and in DMBA+DES group were significant (P<0.01). 　Conclusion　 Low dosage DMBA administered by gastrogavage established breast precancerous model. Exogenous estrogen promotes the development of breast precancerous disease induced by DMBA, while TAM suppresses the canceration.

Objective To investigate the protective effects of glycine on the lung injury in acute necrotizing pancreatitis(ANP). Methods Male Wistar rats were randomly divided into 4 groups: sham operation, ANP group,pretreated group and treatment group(with intravenous glycine 1g/kg). Serum TNF ? level,glutathione (GSH) and myeloperoxidase (MPO) in pulmonary homogenate were determined at 6, 12, and 24h hours after ANP induced. Pulmonary pathology and 3 day survival rate were compared between the groups.Results Compared with ANP group,in glycine pretreated group serum TNF ? level significantly reduced at 6,12, and 24h,while in glycine treatment group serum TNF ? level decreased at 24-hour . In glycine pretreated group or treatment group, the pulmonary GSH content were decreased.In both glycine pretreated group and glycine treatment group, pulmonary MPO activity decreased at 12 and 24h,and pulmonary pathologic severity significantly ameliorated and survival rate increased. Conclusions Although glycine can not increase the GSH synthesis,but giving prophylactic or therapeutic glycine may be effective in improving acute lung injury in ANP, probably through the inhibition of the infiltration and activation of leukocytes.

Objective To study the effect of rising [Ca 2+ ]i on the expression of Caspase 3, Bax and Bcl 2 in human breast cancer MCF 7 cell lines. Methods After the MCF 7 cells treated with different dose of thapsigargin(TG), intracellular calcium concentrations in MCF 7 cells were measured by calcium sensitive fluorescence indicator Fura 2/AM technique; and immunohistochemical method was used to detected the expressions of Caspase 3, Bax and Bcl 2. Results Bax was over expressed and Bcl 2 was down expressed in a [Ca 2+ ]i concentration dependent way;nevertheless, the expression of Caspase 3 was negative in all the TG treated cells. Conclusions The increase of intracellular calcium concentration may have an inductive effect of apoptosis on MCF 7 cells, which is independent to Caspase 3.

Objective To study the apoptotic induction effect of Thapsigargin on estrogen receptor positive human breast cancer cell lines MCF 7. Methods Cells were treated with Thapsigargin and 5 FU in vitro . The rate of cell apoptosis and distribution of cell cycle were detected on flow cytometry. The cell viability was measured by MTT assay and ultrastructural changes in apoptotic cells were confirmed by transmission electron microscopy.Results Thapsigargin could increase the rates both of cell apoptosis and growth supression of MCF 7 cells induced by 5 FU and alter the distribution of cell cycle. Under electron microscope, apoptotic bodies in MCF 7 cells considerably increased.Conclusion Thapsigargin apparently enhances the effect of apoptotic induction of 5 FU on MCF 7 cells, it is worthy of being further studied.

Objective To review the mechanisms of breast cancer escaping from host immune surveillance. Methods The current literatures on the mechanisms of breast cancer cells escaping from host immune surveillance were reviewed in the following aspects: alterations of MHC-Ⅰmolecule phenotype, deficiency of costimulatory molecules, apoptosis of T-lymphocytes induced by breast cancer cells presenting Fas ligand (FasL) and TNF-related apoptosis-inducing ligand (TRAIL) and host immune tolerance induced by tumor cells. Results Loss of classical antigen-presenting human leukocyte antigen (HLA) class-Ⅰmolecules, expression of non-classical HLA class-ⅠmoleculesHLA-G, loss of costimulatory molecule B7, apoptosis of T-lymphocytes induced by tumor cells presenting FasL and TRAIL and antigen-inducing host immune tolerance were related to breast cancer escaping from immune surveillance. Conclusion Breast cancer cells escape from host immune surveillance by altering MHC-Ⅰmolecules, lacking of costimulatory molecules, inducing of apoptosis of T cells and host immune tolerance. But the factors resulting in breast cancer escaping from host immune surveillance are not yet clear and should be further studied.

To observe the alterations of oxygen delivery/consumpation, the deformability and adherence of neutrophil in canine with respiratory distress syndrom(RDS), Method:The 15 selected healthy mongrel dogs were randomly allocated to receiving intravenous oleic acid 0.06 ml. kg~(-1) (test group, n= 8)or equivalent volume of saline (control group, n=7) respectively following anesthesia induction. The hemodynamics was monitored with Swan-Ganz catheter technique, the neutrophils were collected from arterial blood with centrifugal way to measure the deformability and adherence at 1st, 2nd, 4th and 6th hour after the administration of oleic acid separately. The pulmonary pathological examination underwent at 6th hour after the administration. Result: The pathological findings of test group were compatible with the RDS pathological characteristics. One hour after the administration, the deformability decreased significantly and the adheranee increased markedly (P

Objective To investigate the diagnosis and treatment of primary retroperitoneal tumor,and improve the early correct diagnostic rate and the resection rate.Method 86 patients with primary retroperitoneal tumor(PRT) were analyzed by review of the clinical materials from 1990 to 2000.Results Abdominal or waist pain was the main symptom,and abdominal or waist mass was the main sign.52.6% percent of the patients got correct diagnosis before operation.62 cases were followed up,the 2-year survival rate for complete resection cases were 61.3%,while the patients who received palliative resection or biopsy died within one year.The resection rate of tumors was 81.3% in benign tumors and 37.7% in malignant tumors,the recurrent rates after complete resection were 15.4%,60%,respectively.Conclusions The earlier diagnosis,totally removal of tumors at first time,periodic examination after operation are three important ways.The operative treatment is very imperative for the patients with recurrence.

Objective To construct the expression vector maspin/pEFIRES-N so as to study maspin gene on the inhibition of the growth,invasion,and metastasis in hepatocellular carcinoma.Methods The full lenth of maspin gene was cloned and ligated to the expression vector pEFIRES-N digested by EcoRⅠ+XbaⅠ by T4 DNA ligase.The recombinant vector maspin/pEFIRES-N was stably transfected into hepatocellular carcinoma MHCC-97 cell line,and the expressive changes of maspin gene were detected.Results The recombinant plasmid was amplified in the E.coli.JM109.After the identification and sequencing,the reconstructive plasmid was confirmed containing the correct and full nucleotide sequence of maspin gene and the mRNA and protein level of maspin gene were up-regulated in hepatocellular carcinoma MHCC-97 cells.The proliferation and invasion of MHCC-97 cells was inhibited.Conclusion The expression vector maspin/pEFIRES-N was constructed successfully and could be expressed in eukaryotic cells.