Objective To investigate the clinical characteristics,surgical resection extent and prognosis influencing factors of pri-mary high-risk gastrointestinal stromal tumors(GIST).Methods The clinicopathological and follow-up data of 48 patients with pri-mary resectable high-risk GIST in this hospital from January 2005 to January 2013 were retrospectively analyzed.The influence of three kinds of different surgical resection methods on the prognosis of GIST was analyzed.Results 34 cases were treated by R0 re-section(70.83%),6 cases by R1 resection(11.50%)and 8 cases by R2 resection(16.67%).All cases were given the postoperative adjuvant therapy of imatinib mesylate.The average medication time was(26.5±13.6)months.The occurrence rate of adverse drug reactions was 100%,and the main symptoms were swelling and leukopenia.The 5-year survival rates in 3 kinds of resection modes were 97.06%,66.67% and 25.00% respectively.The univariate and multivariate prognostic analysis showed that the surgical re-section extent and the tumor rupture were the independent prognostic factors in the high-risk GIST patients.Conclusion The intact operative resection and preventing the tumor rupture are the keys to increase the postoperative survival rate of GIST patients.

Study of traditional Chinese medicine (TCM) syndromes is a key to the research of TCM modernization, and the core is the classification and diagnostic criteria of syndromes. The purpose of this article is to review the usage of classification algorithms of data mining in TCM syndrome researches, and comprehensively analyze the main features of algorithms and their applications. The appropriate classification algorithm should be chosen according to different research purposes. Rough sets and cluster analysis are suitable for exploratory research without requiring a prior knowledge. Fuzzy sets theory, neural networks and decision tree are suitable for syndrome diagnostic criteria research when the classification goal is clear, because they require a prior knowledge. Among them, fuzzy sets theory could be used in combination with other classification algorithms. Thus, some new methods such as fuzzy clustering, fuzzy rough sets or fuzzy decision tree might be more suitable for TCM algorithm classification research. It is suggested that some novel classification algorithms need to be developed to fit the condition of TCM syndrome, based on the interdisciplinary theories and technologies.

Objective Ouabain is a cardiotonic steroid that can induce the apoptosis of many tumorous cells .This study was to investigate the anti-tumor mechanisms of ouabain by observing its effects on the apoptosis of T lymphoblastic leukemia Jurkat cells and the expressions of hTERT and c-myc mRNA and protein . Methods Jurkat cells were treated with ouabain at the concentrations of 50 and 100 nmol/L for 24 and 48 hours, and those treated with 1 ×PBS served as the control .Then the apoptosis rate of the cells was detected by flow cytometry after Annexin V/PI staining, the expressions of hTERT and c-myc mRNA determined by RT-PCR, and those of hTERT and c-myc protein by Western blot . Results The apoptosis rates of the Jurkat cells in the 50 and 100 nmol/L oua-bain groups were (5.67 ±3.71)%and (9.63 ±4.83)%respectively at 24 hours, and (19.67 ±4.55)%and (37.60 ±11.89)%at 48 hours, significantly higher than (4.23 ±1.01)%in the PBS control group at 48 hours (P<0.05).Compared with the control, the expressions of hTERT and c-myc mRNA were decreased by 200%and those of hTERT and c-myc protein by 224%and 400%, re-spectively, at 48 hours (P<0.05).There was a positive correlation between the reduction of the mRNA levels and that of the protein levels of hTERT and c-myc (P<0.05). Conclusion Ouabain can down-regulate the mRNA and protein expressions of hTERT and c-myc, which may be one of the mechanisms of its induction of the apoptosis of Jurkat T lymphocyte leukemia cells .

A further observation was conducted on the ultrastructure of mother sporccyst (Ms),daughter sporocyst in the brood chamber (b-Ds),migrating daughter sporccyst (mi-Es) and daughter sporocyst in the liver tissue (1-Ds) of Oncomelania hupensis by scanning and transmission electron microscopy.There are 5 points worthy of mention here,namely:(1)A special structure,microvilli polymerizing cisterna,is found on the tegument of 52-day-old Ms branche in all directions and a tubule-like structure is connected to the matrix of the tegument,The significance of this structure may be dealed with the metabolism and transport of the parasite.(2) The tegumental spines appear on 52-day-old Ms.(3) The function of multilaminated vesicle in the tegument of 1-Ds may be associated with the turning over of the surface coat of the larvae and the copatibiltiy between parasite and molluscan host.(4) Abundant ?-glycogen granules and mitochondria appear in the cytoplasm of parenchyma cell of brood chamber of Ms and Ds.It is proposed that the parenchymal cells not only served as the filling material,but also serve as the nursing cells for the regulation of asexual reproduction of the sporocysts.(5)The orientation of muscle fibers of the head of the mi-Ds and narrow node region of 1-Ds shows a well development of the inner longitudinal fibers adjacent to the outer circular muscle layer.They run anlero-posteriorly or vertically from the dorsal to the ventral.The pattern of muscle fibers may account for the activity of these regions of the parasite.(Figs 1-8)In short,the presentation of microvilli polymerizing cisterna,multilamilated vesicle,?-glycogen granules in parenchymal cell,the genesis of spine and the pattern of muscle fibers of the larval stage of schistosome might be helpful in understanding the asexual reproductive physiology of the parasite.

Objective To understand medical students on the awareness level, attitude , behavior and requirement of professional bilingual teaching, so as to provide reference for bilingual teaching. Methods A self- administered was conducted among medical students from different speciality. Results There was a significant difference in awareness level of professional bilingual teaching between nursing students and clinical medicine students (χ2=4.95, P<0.05). Majority students (81.3%) supported carring out bilingual teaching. Teachers and students' foreign language level, selection of bilingual textbook, teaching mode and environment of bilingual teaching are the main influencing factors on earring out professional bilingual teaching. Conclusion Professional bilingual teaching should be implemented designedly, selectively and systematically according to practice condition of different speciality and different subject.

Objective To investigate the clinical and pathological features,diagnosis and differential diagnosis of isolated granulocytic sarcoma of the ovary. Methods The clinical manifestations,pathological features,immunohistochemistry,treatment and prognosis were analyzed in 1 case of isolated granulocytic sarcoma of the bilateral ovary with the review of literatures. Results Granulocytic sarcoma of the ovary was rare. Only 14 cases had been reported so far. This case presented a greenish masse arising from the right ovary measuring 10.0 cm × 8.5 cm × 6.0 cm and 4.8 cm × 3.0 cm × 2.2 cm mass in the left ovary. The neoplastic cells grew in a diffuse pattern or India file, composed of myeloid cells at various stages of maturation, being predominantly primitive myelocytes with a few immature eosinophils. Immunohistochemistry,tumor cells were strongly positive for MPO,CD117,CD43,but negative for CD79α,CD3 Conclusions In routine morpholog,granulocytic sarcoma may be misinterpreted as lymphoma,granular cell tumor,et al. Neoplastic cells at various stages of maturation,India file pattern and immature eosinophils are important diagnostic clues. Immunohistochemical stains are essential in order to obtain correct diagnosis. Despite the localized nature of tumor, intensive antileukemia chemotherapy is necessary.

China ; epidemiology ; Humans ; Occupational Diseases ; epidemiology ; prevention & control

Purpose To investigate the expression of TPX2 in breast cancer, analyze the correlation between its expression and clinico-pathologic characteristics and explore the significances of TPX2 in the treatment and prognosis of breast cancer. Methods Expression of TPX2 in breast cancer tissues, adjacent tissue of cancer and normal breast tissue was examined by immunohistochenistry SP method. The mRNA expression of TPX2 in breast cancer tissues, adjacent tissue of cancer and normal breast tissue was detected by reverse-transcription polymerase chain reaction ( RT-PCR) . Results The expression of TPX2 is significantly higher in breast cancer tissues (75. 86%) compared with adjacent tissue of cancer (40. 00%) and normal breast tissue (5. 00%). And the expression of TPX2 cor-related with tumor grade and lymph node metastasis (P<0. 01), while unrelated to age and clinical stage (P>0. 05). The expression of TPX2 mRNA is also significantly higher in breast cancer tissues ( 1. 465 7 ± 0. 136 6 ) compared with adjacent tissue of cancer (0. 923 3 ±0. 114 8) and normal breast tissue (0. 326 9 ±0. 097 3) (P<0. 01). Conclusion High expression of TPX2 in breast cancer correlated with tumor grade and lymph node metastasis, so TPX2 might be a risk factor in the tumorigenesis, progression and lymph node metastasis in breast cancer.

As is known, H-Y antigens (male specific minor histompatibility antigens) are a group of minor histocompatibility antigens encoded on the Y-chromosome with homologous H-X antigens on the X-chromosome. H-Y antigens were originally discovered as transplant antigens, and they are only expressed in male individuals without specificity for different tissues and organs. A lot of research results show that H-Y antigens play an important role in the sex selection and identification. The paper reviews the above and discusses the application prospect of H-Y antigen in forensic science.

The designed experiment of nutrition survey is set up in the medical teaching in order to make the medical students realize the seriousness and the creativity of the scientific research and to improve their interest and ability of the scientific research.