Mercury accumulation of Tibetan medicine Zuotai in mice / 中成药

AIM To explore the mercury accumulation in KM mice after being given Zuotai at different doses and time.METHODS KM mice were randomly divided into blank group,Zuotai low-,middle-and high-dose (6.07,60.70 and 606.97 mg/kg,42 d;606.97 mg/kg,14 d) groups.The mercury contents in brain (olfactory bulb,cortex,hippocampus,hypothalamus,brain stem,cerebellum),heart,lung,kidney,liver,spleen,serum,muscle of mice were measured after administration.RESULTS Compared with the blank group,Zuotai at low-dose significantly increased the mercury contents in hippocampus,cerebellum,lung,kidney,liver and serum of mice after 42-day treatment;Zuotai at middle-dose markedly increased the mercury contents in olfactory bulb,cortex,hippocampus,brain stem,cerebellum,heart,lung,kidney,liver,spleen and serum of mice after 42-day treatment;the mice treated with high-dose of Zuotai for 42,14 days significantly increased the mercury contents in olfactory bulb,cortex,hippocampus,hypothalamus,brain stem,cerebellum,heart,lung,kidney,liver,spleen,muscle and serum.CONCLUSION Mercury can be accumulated in different tissues of mice after intragastric administration of Zuotai in a dose-and time-dependent manner,which suggests that Zuotai and its compound preparations should not be used in high-dose and long-term.

Significance of arginase-1, glypican-3, hepatocyte paraffin antigen 1 and alpha-fetoprotein in diagnosis and differential diagnosis of liver tumors / 中华病理学杂志

<p><b>OBJECTIVE</b>To study the expression of arginase-1 (Arg-1), glypican-3 (GPC3), hepatocyte paraffin antigen 1 (HepPar-1) and alpha-fetoprotein (AFP) in hepatocellular carcinoma (HCC), benign liver lesions (BLL) and metastatic carcinoma (MC), and their applications in diagnosis and differential diagnosis.</p><p><b>METHODS</b>Immunohistochemical study (EnVision method) for Arg-1, GPC3, HepPar-1 and AFP was carried out in three groups of liver lesions, including 85 cases of HCC, 35 cases of BLL and 19 cases of MC. The relationship between expression of Arg-1, GPC3, HepPar-1 and AFP and clinicopathologic features in HCC was also analyzed.</p><p><b>RESULTS</b>The positive expression rate of Arg-1 was 90.6% (79/85) in HCC and 100% (35/35) in BLL. Arg-1 expression was observed in 1 of the 19 cases of MC studied. The positive expression rate of GPC3 was 82.4% (70/85) in HCC, 5.3% (1/19) in MC and 0 (0/35) in BLL. The positive expression rate of AFP was 47.1% (40/85) in HCC and 0 in BLL or MC. The positive expression rate of HepPar-1 was 72.9% (62/85) in HCC, 100% (35/35) in BLL and 2/19 in MC. Arg-1 has a higher sensitivity in highlighting hepatocellular lesions than AFP and HepPar-1 (P=0.000 versus P=0.002). The specificity of GPC3 expression in HCC was 98.1%.</p><p><b>CONCLUSIONS</b>Arg-1 is a sensitive hepatocellular marker in delineation of liver lesions.GPC3 is a relatively specific marker in diagnosis of HCC.</p>

Study on the morphological features, pathologic diagnosis and differential diagnosis of well-differentiated hepatocellular carcinoma / 中华病理学杂志

<p><b>OBJECTIVE</b>To analyze the clinicopathologic characteristics of well-differentiated hepatocellular carcinoma (WD-HCC), and to find clues for its pathologic diagnosis and differential diagnosis.</p><p><b>METHODS</b>Seventy-three cases of WD-HCC were studied with clinical data analysis, gross and microscopic examination.</p><p><b>RESULTS</b>Among the 73 cases, the prevalence of HBV (+) and/or HCV (+) was 94.5% (69/73), liver cirrhosis was 80.8% (59/73), increased hepatic cell density was 95.9% (70/73), dilated and irregular hepatic sinus was 89.0% (65/73), prominent trabecularism was 89.0% (65/73), increased cytoplasmic eosinophilia or basophilia was 90.4% (66/73), glandular-like structure was 16.4% (12/73, and fatty degeneration was 42.4% (31/73) .</p><p><b>CONCLUSIONS</b>There are important clinicopathologic features associated with WD-HCC. These features are useful in the differential diagnosis of WD-HCC with dysplastic nodule (DN), focal nodular hyperplasia (FNH) and hepatocellular adenoma.</p>

Role and clinical significance of ductular reaction in the development of hepatocarcinogenesis / 中华肝胆外科杂志

Ductular reaction (DR) is a phenomenon that refers to impaired hepatocellular proliferation and activated hepatic stem cells at times of demand such as hepatic regeneration.The components of ductular reactions are thought to be derived from activated hepatic progenitor cells,intermediate hepatobiliary cells,and reactive ductular cells.DRs are thought to play two roles in hepatocarcinogenesis:their hepatic progenitor cells may undergo malignant transformation and migration,and they may contribute to the development of the tumor's microenvironment.Exploring DR phenotype,cellular diversity,and relationship to hepatocarcinogenesis will further enhance our understanding of the pathogenesis of human hepatocellular carcinoma with an ultimate goal of developing new therapies.

Expression of sirtuin in hepatocellular carcinoma and its clinical significance / 中华肝胆外科杂志

Hepatocellular carcinoma (HCC) development is closely related to overexpression of tumor promoters or down-regulation of tumor suppressors.The mammalian sirtuin family was found to be a nicotinamide adenosine dinucleotide (NAD/NADH)-dependent histone deacetylase (HDAC),which implicated in the regulation of critical biological processes through deacetylation modifying on histone and nonhistone.SIRT1 can regulate metabolism,aging,inflammation and cancer progression.In particular,more and more evidence proves that SIRT1 can act as a tumor promot er in hepatocellular carcinoma through deacetylation on tumor suppressors.On the other hand,SIRT1 can strongly suppress metabolic syndrome-associated liver cancer in the mouse model.This review will discuss the expression of sirtuin family member in liver cancer and its clinical significance.

Chemical and structural analysis of Nengchi Bajin ashes in refining of Tibetan medicine gTSo thal / 中国中药杂志

<p><b>OBJECTIVE</b>To investigate the chemical components and microstructure of Nengchi Bajin ashes which are adjuvant material in the refining of Tibetan medicine gTSo thal, in order to explore the material basis of the refining of gTSo thal.</p><p><b>METHOD</b>Scanning electron microscope-energy dispersive spectrometer (SEM-EDX) and X-ray diffraction (XRD) were used to measure the Nengchi Bajin ashes.</p><p><b>RESULT</b>SEM-EDX analysis show that except of themselves elements of Nengchi Bajin ashes, Nengchi Bajin ashes contain the major elements, such as S, O, C and so on, also contain small amount other elements. XRD analysis show that the structures are AuPb2, PbO (tetragonal and orthorhombic) and Pb in gold ash, Ag2S and PbO in silver ash, Cu1.98 (Zn0.73 Fe0.29)Sn0.99 S4, CuS, SiO2, NaCu2S2 and Ca (Fe(+2), Mg) (CO3)2 in bronze ash, Cu7S4 (orthorhombic and monoclinic) and CuO in red copper ash, Cu7 S4, PbS, ZnS, CaCO3and NaCu2S2 in brass ash, FeS, Fe+2 Fe(2+3)O4 and SiO2 in iron ash, SnS and SiO2 tin ash, PbS, PbSO4 and SnS2 in lead ash.</p><p><b>CONCLUSION</b>We have acquired the datum of elements and microstructure of Nengchi Bajin ashes by SEM-EDX and XRD techniques, and that is benefit to explore the material basis of refining gTSo thal.</p>

Sarcomatoid carcinomas of the urinary tract: clinical and pathological characteristics / 中华泌尿外科杂志

Objective To investigate the clinical and pathological characteristics of urocpithelial sarcomatoid carcinoma of the urinary system,and improve the diagnosis and treatment of these tumors.Methods We reviewed the pathology comfirmed urinary system caicinoma at the General Hospital of PLA from January 1999 to December 2010 and analyzed the clinical and pathological data of cases with sarcomatoid carcinoma in them retrospectively according to the literatures. Results A total of 4386 urinary system carcinoma were comfirmed,among them 18 (0.41％) cases of sarcomatoid carcinoma were identified,including 13 from bladder,4 from ureter and 1 multiple neoplasm of pelvis and ureter.The patients,11 males and 7 female,had a median age of 63.3 years (41-84 yrs).Gross hematuria (18 cases) were the main presenting symptoms,3 with flank pain,4 with pollakisuria,urgency and dysuria (urinary irritation symptoms] and 5 with urinary obstruction.The patient with multiple neoplasm of pelvis and ureter received allograft renal transplantation 7 years ago and took anti-rejection drugs all the way after operation.17 patients underwent surgical resection,9 radical cystectomy,5 radical nephroureterectomy,3 partial cystectomy and the remain was biopsy.Tumor size ranged from 2.5 to 12 cm (median,5.6 cm).Microscopically,coexisting high grade urothelial carcinoma was present in all the 18 cases,12 with sarcomatoid differentiation,3 with sarcomatoid and squamous carcinoma differentiation and 3 with sarcomatoid and glandular differentiation.Sarcomatoid component occupied 10 -90 percent.Immunohistochemical testing showed the sarcomatoid cells were positive for cytokeratin (CK) and vimentin.12 patients died of disease 20 days to 42 months (median,5.3 months) postoperatively.3 patients have been surviving with tumor free for 3,3 and 17 months respectinely,and the other 3 was failure to be followed. Conclusions Sarcomatoid carcinoma of the urinary bladder is a highly malignant disease,and the prognosis is very poor.The diagnosis depends on histopathologic and immunohistochemical studies.Early diagnosis and cystectomy or nephroureterectomy together with chemotherapy/radiotherapy may improve the curative effect.

Study on processing technics of Tibetan medicine Nanhanshuishi / 中国中药杂志

<p><b>OBJECTIVE</b>To study the heat processing technics of Nanhanshuishi.</p><p><b>METHOD</b>To find the best processing technic, the single factor experiments and orthogonal experiments were designed basing on the processing technics summarized by consulting documents, scriptures and investigating some Tibetan hospitals, meanwhile, the content of Ca, Fe, Mn, Zn, and Cu in the processed Nanhanshuishi in single factor experiments and orthogonal experiments were detected.</p><p><b>RESULT</b>The best processing technic of Nanhanshuishi was as follows: Nanhanshuishi was crashed to 10-20 mm in diameter, the ratio of the weight of Aconiti Kusnezoffii Radix and potassium nitrate was 1: 2, and the boiling time was 3 h.</p><p><b>CONCLUSION</b>The work in this article provided a basic processing technic data for clarifying the mechanism of processing and establishing the perfect processing technics of Nanhanshuishi.</p>

Composition and thermal stability of traditional Tibetan mineral medicine Nanhanshuishi / 中国中药杂志

<p><b>OBJECTIVE</b>To determine the composition, structure, trace elements and thermal stability of Tibetan medicine Nanhanshuishi.</p><p><b>METHOD</b>The trace elements, the structure, and the thermal stability of Nanhanshuishi were assayed and calculated by X-ray fluorescence spectrometry (XRF), inductively coupled plasma optical emission spectrometer (ICP-OES), atomic fluorescence spectrometry (AFS), inductively coupled plasma mass spectrometry (ICP-MS), X-ray power diffraction (XRD), TG-DTA.</p><p><b>RESULT</b>The results indicated that the phase is mainly made up of CaCO3 (Rhombohedral, R-3c) in Nanhanshuishi. The analysis of elements show that Nanhanshuishi is rich in Ca and O, and contains other more than 20 minor elements, such as Si, Mg, Fe, Al, Na, K, Zn, Mn, Pb, As, Hg etc. The result of TG-DTA show that the weight of Nanhanshuishi starts to decline from near 700 degrees C and get steady above 850 degrees C.</p><p><b>CONCLUSION</b>The study provided scientific data for the establishment of quality standards of Tibetan medicine Nanhanshuishi.</p>

HPLC determination of four components in Tibetan medicine Dangzuo of different Tibetan regions / 中国中药杂志

<p><b>OBJECTIVE</b>To develop an HPLC method for determination of gallic acid, hydroxysafflor yellow A, cinnamic aldehyde and piperine in Tibetan medicine Dangzuo, and to compare the content of four active components in Dangzuo of different Tibetan regions.</p><p><b>METHOD</b>The separation was carried out on a Waters XTerra RP-C18 column ( 4.6 mm x 250 mm, 5 microm). The mobile phases were methanol and water, all contained 0.1% glacial acetic acid, for gradient elution. The gradient program was as follows: 0-22.5 min, methanol was changed from 5% to 50%; 22.5-40 min, changed to 80% 80:20. The flow rate was 1.0 mL x min(-1). The detection wavelength was 270 nm. The reference wavelength was 500 nm.</p><p><b>RESULT</b>The linear ranges of gallic acid, hydroxysafflor yellow A, cinnamic aldehyde and piperine were 0.040-0.640 microg (r = 0.999 8), 0.090-1.440 microg (r = 0.999 9), 0.031-0.500 microg (r = 0.999 9 ) and 0.092-41.477 microg (r = 0.998 9), respectively. The average recoveries (n = 6) were 97.42% (RSD 1.9%), 97.55% (RSD 2.9%), 98.69% (RSD 0.96%) and 96.72% (RSD 4.0%), respectively. The content ranges of gallic acid, hydroxysafflor yellow A, cinnamic aldehyde and piperine in Dangzuo samples of different Tibetan regions were 0.11341.69 mg x g(-1), 0.889-1.51 mg x g(-1), 0.000-40.606 mg x g(-1) and 1.96-2.73 mg x g(-1), respectively.</p><p><b>CONCLUSION</b>The method is a simple and effective for quality control of Tibetan medicine Dangzuo.</p>

The protective effects of pretreatment with Lipo-PGE1 on fiver injury after hemorrhagic shock and resuscitation in rats / 中华急诊医学杂志

Objective To observe the effects and mechanism of pretreatment in rats with prostaglandin E1 on liver after hemorrhagic shock and resuscitation(HSR).Method In total,32 male SD rats were randomly(random number)divided into four groups(n=8):group A(sham group),group B(shock group),group C(HSR group)and group D(Lipo-PGEl+HSR).In group B,rats were sacrificed 90 min after shock,and in group C,rats were anesthetized and then subjected to hemorrhagic shock followed by resuscitation.In group D,rats were pretreated with Lipo-PGEI one hour before HSR.Liver function,NO and ET.1 were measured,and pathological changes of liver tissue in each group were observed,and the expres8ions of iNOS and ET.1 of liver tissue were measured by using immunohistochemistry 6 hours after HSR.Data were analyzed by analysis of variance,and P<0.05 was considered as significantly different in statitistics.Results The levels of liver iNOS and ET-I increased in HSR group compared with shock group [(O.225±0.080)vs.(0.082±0.021)and(0.292±0.047)vs.(0.082±0.035),P<0.05].Pretreatment with Lipo-PGEl markedly reduced the damage of Liver function,and lowered the levels of NO and ET-I.which were consistent with decrease in iNOS and ET-16 hours after HSR[(0.116±0.034)vs.(0.225±0.080)and(0.198±0.041)vs.(0.292±0.047),P<0.05].Conclusions Pretreatment with Lipo-PGEl could reduce liver injury after HSR.The mechanisms might be attributed to inhibiting iNOS and ET-1,regulating the balance of NO/ET-I.

The study on the lowered tumorigenicity of hepatocellular carcinoma cells cotransfected with chemokine mMIP-1α and costimulatory molecule m4-1BB L in vivo / 中华消化杂志

Objective To investigate the effects of macrophage inflammatory protein-1α (MIP-1α) combined with molecule 4-1BB L on the tumorigenicity of hepatocellular carcinoma cells in vivo. Methods Mouse MIP-1α (mMIP-1α) expressed Hepa 1-6 cells were transfected with m4-1BBL recombinant retrovirus, the anti-histidinol cells clones were selected and amplified. The expression of m4-1BB L was confirmed by flow cytometry. The growth curve of Hepa 1-6 cells transfected with mMIP-1α and m4-1BBL alone or together was drawn and compared. C57B/L Mice were randomly divided into 7 groups, 9 mice in each group, injected with mMIP-1α+m4-1BB L Hepa 1-6 cells, m4-1BB L Hepa 1-6 cells, mMIP-1α Hepa 1-6 cells, Hepa 1-6 cells, pLXSHD Hepa 1-6 cells or PBS respectively. The tumorigenicity of hepatocellular carcinoma cells and the mice survival rate were compared between each groups. Results Hepa 1-6 mMIP-1α+m4-1BB L cells which expressed both mMIP-1α and m4-1BB L were successfully established. The expression of mMIP-1α and m4-1BB L alone or together did not affect the growth curve of Hepa 1-6 cells. Observed for 5 weeks, no tumor developed in Hepa 1-6 mMIP-1α+m4-1BB L injected mice. The tumorigenicity of Hepa 1-6 mMIP-1α+m4-1BB L was lower than that of Hepa 1-6 mMIP-1α or Hepa 1-6 m4-1BB L in vivo. The survival rate of Hepa 1-6 mMIP-1α+m4-1BBL injected mice(9/9) was higher than that of Hepa 1-6 m4-1BB L injected mice (6/9)or Hepa 1-6 mMIP-1α injected mice (1/9). Conclusion Chemokine MIP-1α combined with costimulatory 4-1BB L lowered the tumorigenicity of hepatocellular carcinoma cells in vivo, and prolonged the mice survival period.

Correlation between grey scale ultrasonographic feature and estrogen receptor, progesterone receptor and human epidermal growth factor receptor-2 expression in infiltrating ductal cancer of breast / 中华超声影像学杂志

Objective To evaluate the relationship between the grey scale ultrasonographic feature and estrogen receptor(ER),progesterone receptor(PR)or human epidermal growth factor receptor-2(HER-2)expression in infiltrating ductal cancer(IDC)of breast.Methods Seventy-three patients with IDC confirmed pathologically were involved in this study.The specimens wete examined immunohistochemistically to judge the expression of the related factors.ER,PR and HER-2 expression of the mastectomy specimens were determined with immunohistochemical staining technique.The correlation between the ultrasonographic features and ER,PR or HER-2 positive expression was analyzed. Results The ER positive rate in lesions with the spicule sign,echogenic halo or posterior shadowing were higher than in lesions without the spicule sign,echogenic halo or posterior shadowing(P＜0.01).The HER-2 positive rate in lesion with the calcifications and lymphadenectasis in axillary was higher than that in lesions without calcifications,or lymphadenectasis in axillary(P＜0.05).Conclusions A certain correlation exists between the ultrasonographic features and ER,HER-2 expression in patients with IDC.

Changes of plasma IL-6 and IL-8 level during anti-endotoxin treatment in patients with obstructive jaundice / 中国基层医药

Objective To investigate the changes of plasma IL-6 and IL-8 level and the inhibitory effects of preoperative administraction of bile salt or anti-endotoxin antibody against endotoxin in cases of obstructuve jaundice.Methods 50 cases with obstructive jaundice were randomized into OJT1 group taking bile salt orally,OJT2 group receiving intravenous anti-endotoxin antibody and OJ group receiving general treatment.The plasma levels of endotoxin(ET),interleukin-6(IL-6) and interleukin-8(IL-8) were determined in all the cases.Results The plasma ET level was significantly lower in the patients of OJT1 and OJT2 groups than in those of OJ group preoperatively and was further decreased postoperatively(P

Antitumor immunity elicited by 4-1BBL gene transfected Hepa1-6 in vivo / 中华肝脏病杂志

<p><b>OBJECTIVE</b>To study the effects of 4-1BBL on antitumor immunity induced in vivo by murine 4-1BBL gene transfected Hepa1-6.</p><p><b>METHODS</b>Retrovirus vector was used to transfer the 4-1BBL gene into syngeneic murine heptocellular carcinoma cell line Hepa1-6. The products were termed as Hepa1-6/4-1BBL, and then the TCV4-1BBL was obtained by treating them with mitomycin (MMC). Three models (immunological model, early model, and later model) were established to study the antitumor effects of TCV4-1BBL.</p><p><b>RESULTS</b>(1)In immunological models, the syngeneic mice were completely protected by inoculation with TCV4-1BBL, survived free from tumor for a long period (over 100 days). (2)In early models (7 days after inoculation), Hepa1-6 tumor cells showed strong immunogenicity effects and (3) In later models (14 days after inoculation), they had obvious antitumor effects and most of the tumors were disappeared.</p><p><b>CONCLUSIONS</b>The antitumor effect against syngeneic murine hepatocellular carcinoma in vivo is obviously enhanced by treating them with TCV4-1BBL</p>

The in vivo antitumor activity of murine liver tumor vaccine expressing MIP-1alpha / 中华外科杂志

<p><b>OBJECTIVE</b>To observe the in vivo antitumor activity of murine liver tumor vaccine expressing MIP-1alpha mediated by recombinant adenoviral vector.</p><p><b>METHODS</b>The infection efficacy was measured by GFP expression 48 hours after infection of Hepa1-6, and the number of cells was counted daily for 14 days. 5 x 10(6) modified Hepa1-6 cells were inoculated subcutaneously to C57BL/6 mice and the tumor-free animals were rechallenged by 2 x 10(6) wild-type Hepa1-6 cells or syngenic EL4 cells four weeks later. The tumor volume was measured twice a week.</p><p><b>RESULTS</b>Adenoviral vectors could efficiently infect Hepa1-6 cells in vitro, and the in vitro growth rate of AdmMIP-1alpha modified Hepa1-6 cells was not affected; however the in vivo tumorigenicity was significantly decreased, compared with that of control vector modified Hepa1-6. Rechallenge of the tumor-free mice four weeks after administration of AdmMIP-1alpha with the parental Hepa1-6 cells resulted in significant inhibition of tumor growth, but there was no significant difference when rechallenged with EL4.</p><p><b>CONCLUSIONS</b>The liver cancer cells expressing mMIP-1alpha mediated by recombinant adenoviral vector decrease tumorigenicity and elicit specific immunological protection, and could be used as an effective liver tumor vaccine.</p>

Characteristics of coronary microvascular lesions in autopsied elderly with hypertensive left ventricular hypertrophy / 中华医学杂志(英文版)

<p><b>OBJECTIVE</b>To observe the characteristics of coronary microvascular lesions (CML) in the autopsied elderly cases with hypertensive left ventricular hypertrophy (LVH) and the difference of CML among the groups of essential hypertension (EHT), coronary heart disease (CHD) and diabetes (NIDDM) also with LVH.</p><p><b>METHODS</b>A retrospective study was performed in 206 cases > or = 60 years old of EHT, CHD and NIDDM with LVH and 30 normal cases as control, out of 3195 consecutive autopsied cases from 1954 to 1996 in our hospital. Arterioles with diameters of 10 - 60 microm and capillaries in the muscular layer were shown by the methods of HE, Elastic fiber + VG staining and immunohistochemistry of CD31. Quantitative measurements on the arteriole density (AD), the ratio of arteriolar wall and cavity (RWC), capillary density (CD) and the area of endothelial cell (AEC) were performed with light microscope observation and image analysis by computer. According to the thickness of the left ventricle free wall, the severity of LVH was divided into four degrees from 0 to III. LVH of degree 0-III was observed in EHT group, while only LVH of degree I was found in CHD, EHT + CHD, and NIDDM groups. SAS system was used for statistical analysis.</p><p><b>RESULTS</b>AD and RWC increased while CD and AEC decreased significantly with the progression of LVH in EHT groups (P < 0.05 - 0.01). There was a similar but more severe change in the (HT + CHD) group (P < 0.01); the AD increased (P < 0.05) while all other measurements did not show obvious changes in the CHD group. The AD increased, CD and AEC decreased (all P < 0.05), but RWC did not change very much in the NIDDM group.</p><p><b>CONCLUSION</b>CML in the EHT group was characterized by an increased AD and RWC, decreased CD and AEC, among which the increased RWC was the typical change in EHT groups compared with the groups of CHD and NIDDM. Damaged CML may be one of the main factors for decreased coronary flow reserve and myocardial ischemia in cases of EHT with LVH.</p>

STUDY OF THE CORRELATION BETWEEN ANGIOGENESIS AND PROGNOSIS OF BREAST CARCINOMA / 解放军医学杂志

92 specimens from patients with invasive ductal carcinoma were investigated. The expression of vascular endothelial growth factor (VEGF) was demonstrated by immunocytochemical staining with an antibody against VEGF and was quantitatively estimated by using computerized image analysis system. Vessels were immunohistochemically highlighted by using an antibody to CD34, and microvessel density (MVD) was quantified. The postoperative survey in univariate analysis showed that the relapse-free-survival (RFS) time of patients with more than 87 microvessels in single microscopic field was significantly worse compared to that of patients with less than 87 microvessels in node-negative patients (P<0.05). Multivariate analysis confirmed that MVD was an independent prognostic indicator for RFS in node-negative patients and all patients (P<0.05～0.01). In addition, there was a closely positive correlation between VEGF and MVD (P<0.01). The results suggested that VEGF plays crucial roles in the promotion of angiogenesis in primary breast carcinoma. VEGF and MVD are closely correlated with biological behavior of primary breast carcinomas. MVD can provide a useful message in predicting the recurrence or metastasis of tumors.

Establishment of a mouse hepatocellular carcinoma cell line producing mMIP-1α chemokines and the tomorigenicity of mMIP-1α transfected Hepa1-6 / 第二军医大学学报

Objective: To establish a mouse hepatocellular carcinoma cell line that can produce mMIP-1α and to evaluate the possibility of cancer gene therapy by mMIP-1α. Methods: mMIP-1α cDNA was cloned into retrovirus vector pBabe puro and pBabe puro-mMIP-1α was constructed, then pBabe puro-mMIP-1α was used to transfect packaging cells, anti-puromycin cells was proliferated, the supernatant was used to infect hepa1-6, the anti-puromycin clone (hepa1-6 mMIP-1α) and hepa1-6 were analysed for the expression of mMIP-1α mRNA and protein by RT-PCR and immunohistochemistry respectively. The growth curve of hepa1-6 and hepa1-6 mMIP-1α was drawn. The chemotaxis of mMIP-1α produced by hepa1-6 mMIP-1α to mouse spleen cells was observed on agarose gel. C57B/L mouse was inoculated with the tumor cell and the tumorigenicity was studied. Results: Recombinant retrovirus vector pBabe puro-mMIP-1α with mMIP-1α cDNA was constructed. Hepa1-6 did not produce mMIP-1α mRNA and protein, while hepa1-6 mMIP-1α could produce mMIP-1α mRNA and protein. The growth curve of hepa1-6 and hepa1-6 mMIP-1α showed no difference. The chemotaxis of mMIP-1α produced by hepa1-6 mMIP-1α to mouse spleen cells was observed. The tumorigenicity was reduced. Conclusion: A mouse hepatocellular carcinoma Hepa1-6 mMIP-1α is established and mMIP-1α can affect the tumorigenecity of hepa1-6.

TRAIL and its receptor expression in activated lymphocytes / 第二军医大学学报

Objective: To investigate the expression difference of TRAIL and its receptors between resting and activated peripheral blood lymphocytes, and to study their role in cellular growth and proliferation. Methods: Expression of TRAIL and its receptors were detected by RT PCR and DNA sequencing. Results: Neither the expression of TRAIL nor its receptors were detected in resting peripheral blood lymphocyte. However, both expression were found in activated peripheral blood lymphocytes of various degree. Conclusion: TRAIL and its receptors may play a role in regulation and control of the activated lymphocytes in immune reaction.