For hypertension,lowering blood pressure is the basis and well controlled pressure is the core.The ultimate goal of the therapy is to decrease the risk of target organs damage,then minimize the occurrence of cardiovascular endpoint events.Evidence based medicine has confirmed the advantage of ACEI and CCB therapy in controlling blood pressure,lowering the incidence and the mortality of coronary disease.

AIM： To investigate the different expressions of cell cycle related genes in hyperplastic and hypertrophic vascular smooth muscle cells caused by platelet-derived growth factor (PDGF-BB) and angiotensinⅡ(AngⅡ). METHODS: Rat aorta media smooth muscle cells were cultured. PDGF-BB and AngⅡ were added into serum-free medium at a concentration of 20 μg/L and 10-6 mol/L , respectively. Vascular smooth muscle cells (VSMCs) were harvested after stimulated for 24 hours. The expression of cell cycle related genes was measured by DNA chips(Atlas cDNA Expression Arrays, Clontech Laboratories, Inc.). RESULTS: The expression of cyclin D3 mRNA ，cyclin G1 mRNA，p57 mRNA，p16 mRNA，E2F-3 mRNA and DP2 mRNA were higher in PDGF-BB than those in AngⅡstimulated VSMCs. p15 mRNA，p19 mRNA，E2F-1 mRNA， E2F-5mRNA,and N-myc mRNA were only detected in PDGF-BB stimulated group. But the expression of p53-associated protein mRNA were higher in AngⅡstimulation group. The expression of PCNA mRNA, c-myc binding protein mRNA，p53-dependent cell growth regulater mRNA，cyclinC mRNA, cyclinB1 mRNA, E2F-3mRNA were similar in the two groups. CONCLUSION: The procession of cell cycle relys on the coordination of many regulater molecules expressed in different phases. Our study preliminarily definite the genes that express during PDGF-stimulated VSMC's hyperplasia and Ang II-stimulated VSMC's hypertrophy.

This paper introduce the observation and nursing care of toxicity reactions in thirty-two advanced cancer patients treated with cetuximab combined chemotherapy. The nursing measures focused on pre-treatment psychological nursing,strictly abiding by the cetuximab combined chemotherapy protocols,as well as close monitoring and nursing interventions of toxicity re-actions. All the thirty-two patients accomplished the cetuximab combined chemotherapy. During the drug therapy,two patients suf-fered from allergic reaction and three patients with grade Ⅲ skin rash. All the toxicity reactions were alleviated after treatment.

AIM: To investigate the different expressions of cell cycle related genes in hyperplastic and hypertrophic vascular smooth muscle cells caused by platelet-derived growth factor (PDGF-BB) and angiotensinⅡ(AngⅡ). METHODS: Rat aorta media smooth muscle cells were cultured. PDGF-BB and AngⅡ were added into serum-free medium at a concentration of 20 ?g/L and 10 -6 mol/L , respectively. Vascular smooth muscle cells (VSMCs) were harvested after stimulated for 24 hours. The expression of cell cycle related genes was measured by DNA chips(Atlas cDNA Expression Arrays, Clontech Laboratories, Inc.). RESULTS: The expression of cyclin D3 mRNA ,cyclin G1 mRNA,p57 mRNA,p16 mRNA,E2F-3 mRNA and DP2 mRNA were higher in PDGF-BB than those in AngⅡstimulated VSMCs. p15 mRNA,p19 mRNA,E2F-1 mRNA, E2F-5mRNA,and N-myc mRNA were only detected in PDGF-BB stimulated group. But the expression of p53-associated protein mRNA were higher in AngⅡstimulation group. The expression of PCNA mRNA, c-myc binding protein mRNA,p53-dependent cell growth regulater mRNA,cyclinC mRNA, cyclinB1 mRNA, E2F-3mRNA were similar in the two groups. CONCLUSION: The procession of cell cycle relys on the coordination of many regulater molecules expressed in different phases. Our study preliminarily definite the genes that express during PDGF-stimulated VSMC's hyperplasia and Ang II-stimulated VSMC's hypertrophy. [

The ideal scaffold material can reconstruct the morphology, structure and function of tissues and organs. Thus, it has received extensive attention in the field of tissue engineering. With the rapid development of the theories and technologies of naturally-derived biomaterials, it has gradually become a research hotspot in the field of regenerative medicine. Natural biomaterials have high bionics, good biocompatibility and a wide range of sources. Thus, they are very suitable to be used as scaffolds for tissue engineering. According to ingredients and source of raw materials, they can be roughly divided into protein-based biomaterials (collagen, gelatin, silk and fibrin), carbohydrate-based biomaterials (cellulose, chitin/chitosan, alginate and agarose), glycosaminoglycans (hyaluronic acid, chondroitin sulfate) and decellularized extracellular matrix (amniotic membrane, small intestinal submucosa, tendons). Different scaffold materials have unique natural structures and properties. Protein-based biomaterials can affect cell migration and differentiation through polymerization to form a network structure. They can be made into stents alone or used with other synthetic materials based on certain mechanical properties. Carbohydrate biomaterials can carry a large amount of liquid due to their high specific surface area. However, their mechanical properties are poor. Therefore, it is often used in the form of gel with other materials to control the release of cells and growth factors in tendon tissue engineering. Regularly, the anti-inflammatory, viscoelastic, lubricating and highly hydrating properties of glycosaminoglycan biomaterials can be combined with synthetic materials to increase their biocompatibility and hydrophilicity. Compared with the above materials, the decellularized extracellular matrix not only has a more similar extracellular structure and nutrients, but also has certain mechanical properties. Therefore, it can better reconstruct the morphology, structure and function of tissue and organ lesions. Ultimately, the above materials have been paid more and more attention in tissue engineering. The ingenious combination of different materials makes the repair of tendons show better results. In future, naturally-derived biomaterials could have broader clinical prospects and application value.

Heart Failure ; Humans ; Sodium Potassium Chloride Symporter Inhibitors

AIM: To detect the change of urinary concentration of aquaporin-2 (AQP-2) by enzyme linked immunosorbent assay in rat models of different degrees of heart failure and make a comparison with sham-operation group.METHODS: This experiment was carried out between January 2000 and January 2002 in the animal laboratory of Nanfang Hospital of Southern Medical University. Forty-two male adult Sprague-Dawley rats were involved. Twenty-six rat models of chronic heart failure were prepared by ligation of left coronary artery. When left ventricle infarct area was≥20%, the rat models of congestive heart failure were successful (heart failure group, n =13); When left ventricle infarct area was＜20%, the rat models of congestive heart failure were unsuccessful (compensation group, n =13). The other 16 rats were not ligated at coronary rtery (control group). Serum sodium concentration was determined with BeckmanC×3 equipment and urine osmole by cryoscopic method. Urine volume of 24 hours was monitored. Urinary concentration ofAQP-2 level of rats was determined by double antibodies sandwich enzyme linked immunosorbent assay (DABs-ELISA).RESULTS: Forty-two rats were involved in the result analysis. The 24-hour urine volume and serum sodium concentration in the heart failure group and compensation group were significantly lower than those in the control group (P＜0.05-0.01), while urine osmole in two groups was significantly higher than that in the control group (P＜0.05-0.01).②At postoperative 4 and 6 weeks, urinary concentration of AQP-2 level of rats in the control group was significantly lower than that in the other two groups (P＜0.05-0.01), and urinary concentration of AQP-2 level of rats in the compensation group was significantly lower than that in the heart failure group (P＜0.05, 0.01).In the compensation group and heart failure group, urinary concentration of AQP-2 level of rats was significantly higher at postoperative 6 weeks than at postoperative 4weeks (P＜0.05).CONCLUSION:①AQP-2 is the key target protein of water retention and hyponatremia at heart failure.②Detection of urinary concentration of AQP-2 by ELISA can effectively reflect water retention and hyponatremia when heart failure occurs.

AIM: To study urinary concentration of aquaporin-2 water channel protein(AQP2) at different stages of chronic heart failure(CHF) rats and its relation to hyponatremia. METHODS: Male Sprague-Dawley rats(200～250 g) underwent either a left coronary artery ligation (a model of CHF) or a sham-operation. At different stage after surgery, urinary AQP2 concentration was measured by Western blot. 24-hours urine volume, serum sodium and urine osmolality were measured at the same time. RESULTS: There were two peaks of urinary excretion of AQP2 in severe heart failure rats model: one was the third day after operation, the other was the 9th week. Serum sodium and urine osmolality were significantly different in CHF rats as compared with sham-operated rats. Seven weeks after surgery, urinary AQP2 concentration was increased significantly insevere CHF rats compared with the mild ones and the control ones(365%?103% vs 179%?81% and 99%?48%, P

OBJECTIVETo investigate the effects of curcumin on the expression of syndecan-4 protein and p44/42 mitogen- activated protein kinase(MAPK) phosphorylation in rat vascular smooth muscle cells (VSMCs) induced by tumor necrosis factor-α (TNF-α) in vitro.

METHODSRat VSMCs cultured in vitro were stimulated for 24 h by 20 ng/ml TNF-α, 20 µmol/L curcumin, or 20 ng/ml TNF-α plus 20 µmol/lL curcumin. /assay was adopted to evaluate the proliferation of the VSMCs, and the expression of syndecan-4 protein and phosphorylated p44/42 MAPK were determined by Western blotting.

RESULTSCompared with the normal control cells, VSMCs exposed to TNF-α showed significantly enhanced proliferation (P/0.01). Curcumin treatment did not obviously affect the growth of otherwise untreated VSMCs(P>0.05), but could significantly suppress TNF-α-induced proliferation of VSMCs (P/0.01). TNF-α treatment also significantly increased the expression of syndecan-4 protein and phosphorylated p44/42 MAPK (P<0.01), which was markedly lowered by treatment with curcumin (P/0.01). Curcumin alone did not produce any obvious effects on the expression of syndecan-4 protein or phosphorylated p44/42 MAPK (P>0.05).

CONCLUSIONCurcumin can suppress the proliferation of rat VSMCs and lower the expression of syndecan-4 protein and phosphorylated p44/42 MAPK in TNF-α-induced VSMCs.

Animals ; Cells, Cultured ; Curcumin ; pharmacology ; Mitogen-Activated Protein Kinase 3 ; metabolism ; Muscle, Smooth, Vascular ; drug effects ; metabolism ; Phosphorylation ; drug effects ; Rats ; Rats, Sprague-Dawley ; Syndecan-4 ; metabolism ; Tumor Necrosis Factor-alpha ; pharmacology

Objective To compare the clinical characteristics,and outcomes of patients with heart failure with different left ventricular ejection fractions (LVEF).Methods A total of 1 182 hospitalized patients with heart failure (HF) were enrolled and retrospectively studied in the present study.The patients were stratified by LVEF as reduced (HFrEF,LVEF ＜ 40％,n =313),mid-range (HFmrEF,40％ ≤ LVEF ＜50％,n =287) and preserved (HFpEF,LVEF≥50％,n =582) ejection fraction groups.Among the 1 182 cases,941 of them (81.3％,84.9％,and 84.0％ inHFrEF,HFmrEF and HFpEF groups,respectively) were followed up for an median duration of 27.3 months.Results (1) Among the study patients,26.5％ were in HFrEF,24.3％ in HFmrEF,and 49.2％ in HFpEF groups.(2) Ischemic heart disease with HFmrEF was more frequent than that in patients with HFrEF.The average age,percentage of female subjects,systolic blood pressure,uric acid,N terminal B-type natriuretic peptide precursor (NT-proBNP),hemoglobin,and the incidence of hypertensive heart disease,anemia,atrial fibrillation in patients with HFmrEF were higher than those in patients with HFrEF,but lower than those in patients with HFpEF (all P ＜0.01).(3) The all-cause cumulative mortality was 10.8％ at 1 year,20.6％ at 2 years and 35.9％ at 5 years.No difference was observed in the all-cause cumulative mortality at 1 year,2 years,5 years among the three groups (all P ＞ 0.05).Conclusions The HFmrEF patients,as a new and distinct group,were with many intermediate characteristics compared with HFrEF and HFpEF subjects.However,the all-cause mortality was not significantly differeut among HF patients with different LVEF.