Purpose:To study the appropriate surgical treatment for ductal carcinoma in situ of the breast ( DCIS ).Methods:16 patients with DCIS treated between Jan 1994 and Dec 2003 were evaluated. All patients underwent lumpectomy and intraoperative frozen section evaluation. The median age was 43 years ( range 30 to 84 ) and the median pathologic size of DCIS was 2.0cm ( range 0.3 to 4cm ). 2 of these 16 patients had Halsted radical mastectomy, 11 had modified radical mastectomy, 2 had simple mastectomy and 1 had breast-conserving surgery ( quadrant excision plus axillary lymph node dissection ). As postoperative treatment, 3 patients received radiotherapy, 8 received chemotherapy and 10 had endocrine therapy.Results:2 patients were found to have axillary micrometastases. The median follow-up time was 62(6～114)months. All patients survived without recurrence. Only one patient was found to have metastasis in hipbone 4 years after operation.Conclusions:Lumpectomy or wider excision plus postoperative radiotherapy is feasible for most patients with DCIS.[

Objective To study the change in sodium channel current(ⅠNa)in the developement of the left ventricular hypertrophy in spontaneously hypertensive rat(SHR).Methods ⅠNa and membrane capacitance(MC)were measured in myocytes of 10,24 and 34-week SHR by the whole-cell patch-clamp technique.Systolic blood pressure(SBP)and left ventricular mass index(LVMI)were detemined.10-week old Wistar rats served as controls.Results LVMI and MC of SHR were significantly higher than those of Wistar rat(P0.05),however the density of ⅠNain 34-week SHR were higher than those of Wistar rat(-18.3?1.9)vs(-15.3?2.0)pA/pF,P

Objective To explore the way to compile a global military medical literature collection and perspectives for its research.Methods The names of military medical research institutions and their trends of development were summa-rized via semantic analysis.The collection of retrieval words for military medical research institutions( then the collection) was constructed based on expert consultation.The names of military medical research institutions were collect-ed with manual screening after retrieval withthe collection.The literature collection of military medical research institu-tions was completed with coordinated retrieved of their papers and other publications.Results According to different needs of information analysis, the literature collection of military medical research institutions could be analyzed in terms of their size, types of development, and academic authority.Conclusion Based onthe collection, the military medical research institutions collected in this article included institutions that used to be neglected during the course of information tracking of military medicine.Three kinds of institutions should be paid more attention to.The institutions were the ones with a large number of papers and citations, the ones whose papers increased or decreased dramatically, as well as the ones whose research directions were the priority fields of Chinese PLA.

Objective: To investigate the changes of osteoprotegerin ( OPG) and receptor activator of nuclear factor kappa B ligand ( RANKL) level in perio-implant crevicular fluid ( PICF) and to monitor the development of the stability of Straumann ? tissue-level implants by resonance frequency analysis ( RFA) during the early phases of healing .Methods: A total of 35 implants ( length 10 mm ) were placed.PICF samples were collected with filter paper strips at baseline , 1, 2, 3, 4, 6, 8, and 12 weeks post-surgery, respectively.The OPG, RANKL levels were determined by ELISA method .At the same time points, the implant stability quotient (ISQ) values were determined with Osstell TM mentor.Results:During healing , PICF-OPG levels increased significantly 2 weeks after surgery when compared with the 4th-, 6th-, 8th-and 12th-week reevaluation (P<0.05).The OPG/RANKL ratio in PICF was significantly higher ( P<0 .05 ) than that in gingival crevicular fluid at 1 week post-surgery .ISQ slightly fluctuated within the first 4 weeks after installation .Following this, the ISQ values increased steadily for all the implants and up to 12 weeks.Significant differences were noted between the mean ISQ values at the 12th-week and other observation time points .Conclusion: The PICF-OPG levels may be effective in monito-ring the process of osseointegration .All the ISQ values indicated the stability of Straumann ? implants over a 12-week healing period .RFA is a reliable and effective assistant to monitor implant stability .

Objective: To investigate the expression and prognostic significance of insulin-like growth factor binding protein 5 (IGFBP5) in gastric adenocarcinoma (GAC). Methods:IGFBP5 expression in tissue samples from 236 GAC patients was analyzed us-ing immunohistochemical methods. These patients had undergone surgical resection between 20003 and 2006 in Sun Yat-Sen Universi-ty Cancer Center. The relationship between IGFBP5 expression and clinicopathological factors in the 236 GAC patients was analyzed using Pearson correlation analysis. The significance of IGFBP5 in predicting the survival status of these patients was analyzed using Ka-plan-Meier survival analysis and Cox's proportional hazards regression model. Results:Immunohistochemical staining data indicated that IGFBP5 expression was significantly decreased in 159 of the total GAC cases (67.4%). Of the 62 cases with well-and moderately differentiated GAC, 31 (50%) exhibited reduced IGFBP5 expression. Of the 174 cases with poorly differentiated GAC, 128 showed re-duced IGFBP5 expression. Reduced IGFBP5 expression was also observed in female patients and in patients with tumors over 5 cm in size or with poorly differentiated tumors (P<0.05). The reduced expression of IGFBP5 was common in the tumors that were staged as T3+4a/b andⅢ/Ⅳ(P<0.05). Kaplan-Meier survival analysis revealed that the reduced expression of IGFBP5 was associated with poor prognosis in GAC patients (P<0.001). Cox regression analysis identified IGFBP5 expression as an independent prognostic factor for the overall survival of these cancer patients (HR=1.897, P=0.029). Conclusion: IGFBP5 expression is reduced in GAC tissues, and IGFBP5 independently predicts an unfavorable prognosis in GAC patients.

OBJECTIVE: To study the apoptosis-promoting effect of the serum from Panax notoginseng extracts-fed dog on precancerous gastric cells by means of flow cytometry. METHODS: In the experiment, we adopted eternalized human gastric mucosa epithelium GES-1 cells transformed by N-methyl-N'-nitro-N-nitroso-guanidine (MNNG) (MC cells) as the model of precancerous lesions for study in vitro. We took the serum of a dog before and at two different points of time (2 and 6 hours) after feeding the dog with Panax notoginseng extracts for experiment. The MC cells were cultured in mediums with different concentrations of the medicated serum at 2- or 6-hour point of time for 72 hours. By means of flow cytometry, we examined the apoptosis-promoting effects of the serums on the MC cells. RESULTS: The medicated serums at these 2 points of time had significant effects in promoting MC cell apoptosis. The proportions of apoptotic cells in culture mediums with medicated serums had a significant increase as compared with those in culture mediums with non-medicated serums (serum obtained before administration of extracts to the dog) under the same conditions (P<0.05). The number of MC cells in G(0)/G(1)phase was decreased (P<0.05) and that in G(2)/M phase increased (P<0.05), while no consistent changes were observed in S phase. CONCLUSION: The medicated serums obtained at the two different points of time have significant apoptosis-promoting effects on MC cells. They decrease the number of MC cells in G(0)/G(1) phase and increase the number of MC cells in G(2)/M phase. This is probably responsible for the effects of Panax notoginseng extracts in inhibiting the proliferation of MC cells and promoting its apoptosis.

OBJECTIVE: Through cell cultivation, we studied the inhibiting effects of the serum of the dog fed with Panax notoginseng extracts on precancerous gastric cells, trying to find the best time points or periods when the extracts' function was the strongest after administration of the extracts to the dog. METHODS: The experiments adopted eternalized human gastric mucosa epithelium GES-1 cells and MC cells gained from GES-1 cells transformed by N-methyl-N'-nitro-N-nitroso-guanidine (MNNG) as the model of precancerous lesions for study in vitro. We took the serum of a dog before and at different points of time after feeding the dog with Panax notoginseng extracts for experiment. By means of MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide) assay, we examined the inhibiting effects of the serum after culturing the GES-1 and MC cells for 72 hours with different concentration (8%, 4%, 2%) of medicated serum obtained from the dog at different points of time, so as to find that, at which points of time the medicated serum obtained, it would be the most effective. RESULTS: The results showed that the GES-1 and MC cells inhibition rates of medicated serum from the points of 2-hour and 6-hour were the highest, and the culture medium containing 8% of medicated serum from these two points had prominent inhibiting effects on both kinds of cells. The GES-1 cells inhibition rate in culture medium containing 8% of medicated serum from the point of 2-hour was 70.8% (P<0.01) and that of the MC cells was 45.3% (P<0.01). The GES-1 cells inhibition rate in culture medium containing 8% of medicated serum from the point of 6-hour was 88.5%(P<0.01) and that of the MC cells was 42.4% (P<0.01). CONCLUSION: The points of time with the strongest inhibiting effects are 2 hours and 6 hours after being fed with Panax notoginseng extracts. At these two points, the serum is most effective in inhibiting the proliferation of GES-1 and MC cells.

AIM: To discuss the influence of high glucose on the proliferation and ICAM-1 expression of human umbilical vein endothelial cells(HUVEC) within 48 h and to observe the altered effect of high glucose when high glucose and inflammatory stimulator exist at the same time.METHODS: HUVEC were cultured with different concentrations of glucose.The proliferation of HUVEC induced by high glucose was detected by MTT assay.The ICAM-1expression of HUVEC induced by high glucose was assayed by flow cytometry and cell ELISA.The difference of ICAM-1 expression between induced by LPS and by LPS together with high glucose was compared.RESULTS: 25、(45 mmol?L~(-1)) glucose did not inhibit the proliferation of HUVEC within 48 h,and they also had no effect on the expression of ICAM-1.However,when stimulated HUVEC with LPS, the proliferation of HUVEC was extremely inhibited in high glucose groups,and the expression of ICAM-1 increased significantly in those groups.CONCLUSION: In short time,high glucose has no effect on the proliferation and ICAM-1 expression of HUVEC,but when inflammatory stimulation exists,high glucose can inhibit the proliferation and increase the expression of adhesion molecules.

OBJECTIVE: To investigate the effects of Radix notoginseng extracts drug-containing serum on the expressions of apoptosis-regulating proteins including Bax, bcl-2 and p21WAF1 in precancerous gastric cells. METHODS: The N-methyl-N'-nitro-N-nitroso-guanidine (MNNG) transformed eternalized human gastric mucosa epithelium GES-1 cell line (MC cell) was used in vitro as a model of gastric precancerous lesion. The medicated canine serum was prepared by feeding to the adult Beagle dog with Radix notoginseng extracts and obtaining the serum after 2-hour medication. MC cells were cultured with medicated canine serum (medicated serum group) or non-medicated canine serum (normal control group) for 72 hours. Expressions of Bax, bcl-2 and p21WAF1 proteins were detected by immunocytochemical assay and the average optical density of the cells was determined by an image analysis system. RESULTS: Compared with those of the normal control group, Bax and p21WAF1 expressions in medicated serum group were significantly enhanced (P<0.01), while the expression of bcl-2 was significantly reduced (P<0.01). CONCLUSION: Radix notoginseng extracts may inhibit the proliferation and promote the apoptosis of precancerous gastric cells through altering expressions of the bcl-2, Bax and p21WAF1 genes.

Objective To explore the characteristics of selective attention function in patients with silent cerebral in-farction (SCI) and depression, the relationship between depression, selective attention and cognitive dysfunction. Methods Eighty-two patients with SCI and 82 normal subjects were selected and evaluated by using Hamilton Depression Rating Scale (HAMD), Montreal cognitive assessment (MoCA) and Stroop color-word test (CWT). Patients with SCI were further classified into depression subgroup and no-depression subgroup based on the score of HAMD. Results The score of MoCA was lower in SCI group (23.11 ± 5.41) and was much lower in depression subgroup (20.31 ± 5.44) compared with control group (28.70 ± 2.18) (all P<0.01). Compared with control group, the reaction times of card A, B, C and Stroop interference effects (SIE) were prolonged in SCI group. The reaction time of card A, B, C and SIE were (33.25±14.10);(42.45±15.18);(104.68 ± 25.08) and (62.24 ± 21.53) in depression subgroup, respectively. The error counts of card B, C and SIE were in-creased (P<0.05) in SCI group. The error counts of card B,C and SIE were (3.59±2.14), (15.67±7.20) and (12.08±6.46) in depression subgroup, respectively. The scores of MoCA were negatively correlated with the reaction time and error counts of SIE (r=-0.429,r=-0.500,all P<0.01).The location of infarction was correlated with the score of HAMD and error counts of SIE to some degree: both of the scores were higher in patients with left infarction compared with right infarction and were higher in patients with cortex infarction compared with subcortex infarction. Conclusion The present study revealed that patients with SCI and depression have selective attention deficit which is closely correlated with the level of cognitive function.