Objective To observe the effects of chronic angiotensin Ⅱ blockade on gene expression of extracellular matrix at different segments of nephron in aged rats. Methods Glomeruli and tubules of rat kidney were isolated by laser microdissection and pressure catapulting system. Gene expression level of transforming growth factor (TGF-? 1) and fibronectin (FN) were assessed. Fifteen -month-old male Wistar rats were treated with the valsartan (25mg/kg) until sacrificed at age 24 months, and their TGF-? 1 and FN expression levels were compared with that of young and aged controls. Results Compared with young rats, TGF-? 1 mRNA and FN mRNA expression were both up-regulated in isolated glomeruli and tubules in aged rats. Although Valsartan had no effect on the gene expression of TGF-? 1 in isolated glomeruli, it down regulated TGF-? 1 mRNA in tubules of aged rats. Valsartan also down regulated FN mRNA in both glomeruli and tubules of aged rats. Conclusion The results indicate that changes in TGF-? 1 and FN expression might be involved in the aging related changes of gomeruli and tubules. Activation of RAS at the different segments of nephron in aged rats might regulate the gene expression of ECM through diverse mechanisms.

Objective To prepare the anti-hUART1 polyclonal antibody and investigate the subcellular localization of hURAT1 protein. Methods The full-length hURAT1 gene was obtained by RT-PCR and inserted into the fusion expression vector pEGFP-N3,the predicated antigen epitope was cloned into GST fusion protein expression plasmid pGEX-5X-1, transformed into E. coli BL21 cells for expressing recombinant GST-hURAT1 protein induced by IPTG. The purified hURAT1-GST fusion protein was employed to immunize rabbit for preparing the polyclonal antibody. The expression of hURAT1 was analyzed by western-blot and immunohistochemistry in human kidney. pEGFP-hURAT1 was transfected into the LLC-PK1 cell in order to observe the subcellular localization of the gene using confocal microscopy. Results Specific anti-hURAT1 rabbit polyclonal antibody was obtained, and both Western-blot and immunohistochemistry showed that hURAT1 was expressed in the human kidney brush border,localized in the apical membrane of the LLC-PK1 cell. Conclusions hURAT1 protein was a membrane protein located in renal proximal tubule, which could be detected in the apical membrane. The anti-hURAT1 polyclonal antibody could be used for studying the physiological function of hURAT1 and its pathology.

0.05 ). CONCLUSION: Shenmai Injection can increase the immunity function.

Objective: To observe the clinical effect of enteral nutrition on the patients with acute respiratory failure phase COPD.Methods: 60 cases of COPD patients in the acute respiratory failure phase were randomly divided into two groups: treatment group and control group,30 cases respectively.The two groups had the same formal diet,anti-infection,oxygen therapy,spasmolysis therapy,eliminate sputum therapy,adjustment acid-base imbalance and electrolyte disturbances.Additionally,the treatment group had been given oral lishikang(a kind of nutrient solution)for two weeks.Results:Compared with the control group,treatment group had the improvement on the body measurement,pulmonary function and serum albumin.The difference between the two groups were remarkable(P

To investigate the changes of local RAS in kidney of aged rats and the regulative effect of AT1 RA, sixteen-month-old male Wistar rats were treated with the valsartan (25mg/kg) until sacrificed at the age of 24 months, and their results were compared with young and aged controls. Renin, angiotensinⅡ levels and the expressions of ATlaR mRNA, AT1bR mRNA and AT2R mRNA were measured. The results showed that plasma renin and angiotensin Ⅱ levels decreased with aging, whereas angiotensin Ⅱ in kidney cortex increased. Valsartan increased the angiotensin Ⅱ level of the aged kidney significantly . AT1aR mRNA and AT1bR mRNA were down-regulated in aged rats compared with the young group. The expression of AT2R mRNA was up-regulated with aging. Valsartan increased AT1aR mRNA, but did not modify AT1b R mRNA and AT2 R mRNA. This results indicated that angiotensin Ⅱ receptors were regulated differently with aging. Our conclusion is that in rat kidney valsartan increases renal angiotensinⅡlevel, blocks AT1R, but has no effect on gene expression of AT2R, which might enhance the protective effect by the stimulation of AT2R.

Objective: To prepare auto-tumor-specific cytotoxicity T lymphocytes (CTLs) of breast cancer patients and to observe their therapeutic effects on bone marrow micrometastasis (BMM) of breast cancer. Methods: BMM in 82 patients with primary breast cancer (stage Ⅰ to Ⅲ) , who were treated in the Fourth Affiliated Hospital of Hebei Medical University from March to December in 2007 (all the patients signed paper of informed consent), was exmined by flow cytometryusing CK18 and CK19 as marker. Twenty-three patients with BMM were randomly divided into two groups: 17 patients were treated with tumor-specific CTLs (therapy group), and 6 patients were treated with IL-2 (control group). Tumor-specific CTLs were induced in vitro from axillary lymph nodes and peripheral blood of breast cancer patients in ther-apy group, and were reinfused into the same patient 10-14 days after operation. The therapeutic effects of tumor-specific CTLs on BMM of breast cancer patients were observed. Results: Twenty-three cases (28.05%) in 82 breast cancer patients were BMM positive as detected by FCM. BMM positive rates increased with the increase of clinical TNM stages and histological grades of breast cancer, and decreased with the increase of ER and PR protein expression in cancer tis-sues. Dendritic cells (DCs) were successfully isolated and induced from the peripheral blood of breast cancer patients. Tumor-specific CTLs were induced by co-culturing lymphocytes from axillarey lymph nodes with auto-tumor antigen-im-pulsed DCs. Fourteen cases in the therapy group became negative of BMM after treatment with tumor-specific CTLs (14/ 19, 82.35%). Only one case in the control group became negative of BMM after treatment with IL-2 (1/6, 16.67%, P=0.00028). Conclusion: Tumor-specific CTLs have been successfully prepared and they show a satisfactory therapeu-tic effect on bone marrow micrometastasis of breast cancer.

Objective To thoroughly explore the pathophysiological roles of TIMP-1 during the progressive course of renal diseases, the study was aimed at identifying the functional phenotype of endogenous and exogenous genes in kidneys of human TIMP-1 transgenic mice. Methods Renal histological changes between 3-month-old wild type mice (n=8) and 3-month-old transgenic mice (n=8) were analyzed through PAS staining of paraffin sections. The mRNA and protein expressions of h/mTIMP-1, mTIMP-1, TIMP-2, TIMP-3, MMP-9, MMP-2, and COLⅣ?5 mRNA were detected by Northern blot and Western blot. The activities of gelatinases and TIMP-1 were examined by gelatin zymography and reverse zymography, respectively. Results No difference in histological picture in kidneys was found between wild type and transgenic mice. In contrast with wild type mice, it was found that in kidneys of transgenic mice, the mRNA and protein expressions of h/mTIMP-1 and its activity were up-regulated (P0.05). Conclusion The transgene was expressed steadily in kidneys of human TIMP-1 transgenic mice, and it induced the compensation of MMPs/TIMPs.

Objective To explore the humanistic nursing care for the impact on the overall quality of care.Methods 1000 patients were randomly divided into experimental and control group,traditional holistic nursing was implemented in the control group,while both traditional holistic nursing and humane care were implemented in the experimental group to compare the differences of patient satisfaction by questionnaire survey.Results The humane care group was significantly higher in patient satisfaction,and the differences are statistically significant(P

Objective To study the change of human Na+/dicarboxylate cotransporters (NaDC)in IgA nephropathy,and to discuss its role in IgA nephropathy. Methods Thirty-four cases of IgA nephropathy diagnosed by renal biopsy were divided into five grades according to the degree of pathological change of IgA nephropathy,and their tubulointerstitial lesions were semi-quantitatively analyzed. Changes of the expression of NaDC1 and NaDC3 in kidney were observed by using immunohistochemistry,and analyzed with clinical data by correlation. Results Tubulointerstitial lesion exacerbated with the progress of pathological change in IgA nephropathy. In the cases of Ⅳ and Ⅴ grade,24 h urinary protein,serum creatinine,urinary NAG enzyme were increased,and urinary osmotic pressure was decreased,as compared with the cases of Ⅰ-Ⅲ grade( P

AIM:To study the senescence of human umbilical vein endothelial cells(HUVECs) and Bcl-2,Bax gene expression associated with apoptosis induced by angiotensinⅡ(AngⅡ).METHODS:HUVECs were cultured in vitro and the cell viability was observed by methyl thiazolyl tetrazolium(MTT).HUVECs were intervened by AngⅡ and valsartan(AngⅡ type 1 receptor blocking) and divided into 3 groups:the control group,AngⅡ group(stimulated with AngⅡ10-6mol/L for 48 h),valsartan group(valsartan was added to cells 1 h before 10-6mol/L AngⅡ treatment).?-gal staining aod cell cycle analysis were used to identify the cell aging status.Morphologic changes and percentage of apoptosis were assayed with Hoechst33258 under fluorescent microscope.The expressions of Bcl-2 and Bax,and the apoptosis-associated genes were detected by immunocytochemical staining,RT-PCR and Western blotting.RESULTS:The cell viability by AngⅡ-induced cells was(81.9%?4.1)%,the positive cell number of ?-gal staining was significantly higher in AngⅡ-induced cells(80.10%?6.81)% than that in the control cells.The cell cycle was at G0-G1(91.36%?6.45)%,the apoptotic cells significantly increased(31.84?2.86)% under fluorescent microscope.In valsartan group,Bcl-2 mRNA and protein expression increased markedly(P