Warming yang, which is one of the treatment principles of traditional Chinese Medicine, is very important in treating chronic heart failure, especially late-stage heart failure. It has been proved in many experiments and clinical trials that warming yang can improve the hemodynamic parameters. The treatment strategy for heart failure has changed from short-term correction of hemodynamic parameters to long-term rehabilitation approaches. We discussed the possible negative-effects of warming yang on neuroendocrine responses and myocardial remodeling. The potential beneficial effects of treatment for nourishing yin or nourishing yin combined with warming yang on heart failure were also explored.

Objective To investigate the correlation between arrhythmia and left ventricular hypertrophy in patients withprimary hypertension. Methods 12-lead synchronous resting electrocardiogram. ambulatory electrocardiogram and echo-cardiogram were obtained from 246 patients with primary hypertension. Left ventricular mass index (LVMI ) was meas-ured as previous reference. Results The average LVMI of myocardium hypertrophy group (151.6? 15. 8g/m~2) signif-canily increased compared with that of the control group (P

Transient ischemic attack (TIA) traditionally refers to temporary brain dysfunction lasting no longer than 24 hours due to a shortage of blood and oxygen, without any residual neurological deficit. In recent years, the development of imaging technology enables us to have a new awareness about TIA. This article reviews the effects of MRI, especially diffusion-weighted imaging, in the diagnosis and prognostic prediction of TIA.

Objective To investigate the relationship between nuclear factor(NF)-κB activity and lactacystin induced prostate cancer cell apoptosis.Methods Two prostate cancer cell were divided into two groups:blank control group treated with culture solution,lactacystin group treated with different concentration of lactacystin(0.5,1.0,2.0,4.0 μ mol/L),the action time were 8,16 and 24 hours.The cell survival rate was measured by MTT assay.NF-κB DNA binding activity was measured by enzyme-linked immunosorbent assay,the expression of NF-κB P65 nuclear protein was detected by Western blot assay,and caspase-3 activity was analyzed by enzyme analysis assay.Results On basal condition,the NF-κ B DNA binding activity was much higher in DU145 cell than that in LNCaP cell(t=4.728,P=0.001).Compared with blank control group,different concentration of lactacystin groups'NF-κ B DNA binding activity in both the LNCaP and DU145 cell were reduced.The expression of NF-κB p65 nuclear protein decreased along with raising of lactacystin concentration in LNCaP cell,but it did not change in DU145 cell.On basal condition,caspase-3activity in DU145 cell was higher than that in LNCaP cell(t=4.519,P=0.001).After lactacystin acting of 24 hours,caspase-3 activity increased along with raising of lactacystin concentration in both the LNCaP and DU145 cell(2.0 μmol/L lactacystin group compared with 1.0 μmol/L lactacystin group,DU145 cell P=0.000,LNCaP cell P=0.000).Conclusions Lactacystin has different killing effects on prostate cancer cell.The mechanism may be related to inducing the apoptosis by down-regulation of NF-κB activity.There may be additional cell survival/death pathway in androgen-independent prostate cancer cell.

In this paper, absorption and pharmacokinetic study of Radix Rehmanniae was studied by liquid chromatography coupled with mass spectrometry method after oral administration to rats. By comparing the chromatograms of ultraviolet, full scan, extracted ion and selective reaction monitoring (SRM) of standard solution, Radix Rehmanniae, blank plasma and rat plasma post drug administration, catalpol and ajugol were found to be the main compounds absorbed from Radix Rehmanniae. Plasma concentrations of aucubin, dihydrocatalpol, rehmannioside A (or rehmannioside B/ melittoside) and rehmannioside D were very low. Quantitative method for catalpol and aucubin and semi-quantitative method for other compounds in rat plasma were established. The pharmacokinetic study of those absorbed components was conducted after oral administration of 6 g x kg(-1) Radix Rehmanniae water extract to rats. Cmax, t(1/2) and AUC(0-infinity) of catalpol and ajugol were (2349.05 +/- 1438.34) and (104.25 +/- 82.05) ng x mL(-1), (0.86 +/- 0.32) and (0.96 +/- 0.37) h, (4407.58 +/- 2734.89) and (226.66 +/- 188.38) ng x h x mL(-1), respectively. tmax was at 1.00 h for catalpol and ajugol. Both catalpol and ajugol were absorbed and excreted rapidly.

BACKGROUND:Dynamic hip screws have been considered as a classic method for intertrochanteric fracture. However, migration of the hip screw resulting in cut-out of the femoral head remains the most common mechanical failure, which requires secondary surgery. OBJECTIVE:On the basis of the traditional dynamic hip screw, we modified the lag screw, designed new internal fixation system as cemented dynamic hip screws to explore the feasibility and the biomechanical properties for the treatment of osteoporotic intertrochanteric fracture. METHODS:A total of 24 hip samples were harvested from fresh cadavers with osteoporosis. Bone density was measured. According to the standards, the specimens were made into intertrochanteric fracture models of AO31-A1 type. Of each specimen, one side implanted with cemented dynamic hip screws served as experimental group, and another side implanted with traditional dynamic hip screw served as control group. Axial compression, twisting and fatigue load biomechanics were tested. Their biomechanical functions were compared. RESULTS AND CONCLUSION:Stress intensity, axial stiffness and horizontal shear stiffness were higher in the experimental group than in the control group (P<0.05). At torsion angle of 3°, torsional moment was higher in the experimental group than in the control group (P<0.05). Fatigue load was higher in the experimental group than in the control group (P<0.05). Results suggested that cemented dynamic hip screw internal fixation system in the treatment of senile osteoporotic intertrochanteric fracture can effectively enhance the hip screw holding force and prevent femoral cutting. Biomechanical property, stiffness, endurance resistance and stability of cemented dynamic hip screw are better than traditional dynamic hip screw.

Objective:To construct the yeast expressive vector of rmFⅦ, in which mFⅦ was mutated to inhibit coagulation without affecting the affinity for TF, and express it in Pichia pastoris. Methods:The full length cDNA encoding mFⅦ was amplified from a mouse liver by RT-PCR method, site-direct mutated and restriction enzyme digested as design. Cloning into pPIC9K, electroporation of Gs115, in vivo screen of multiple inserts by G418 resistance, BMGY/BMMY are used for induction and expression of rmFⅦ in pichia pastoris. These proteins were also screened for functional activity. Results: Three different rmFⅦ-pPIC9K yeast expression vectors and it's aim protein were obtained,two kinds of proteins were found to be functional active as design. Conclusion:rmFⅦ protein can be expressed in pichia pastoris and it might facilitate the development of tumor-target molecule, and novel anti-agiogenesis drug study.

The modulating action and mechanism of endogenous nitric oxide (NO) on the delayed rectifier potassium currents in cultured hippocampal neurons were examined using whole-cell patch clamp techniques. L-arginine (L-Arg, 2 mmol/L), a substrate of NO synthases, significantly suppressed the delayed rectifier K+ currents in hippocampal neurons, while its isomer D-arginine (D-Arg, 2 mmol/L) exerted no effect. Moreover, pretreatment with NO synthase inhibitor L-NAME (0.5 mmol/L) completely blocked the suppressing effect by L-Arg, indicating that L-Arg exerted its modulation by producing NO but not by itself. No effect was found on the L-Arg-induced inhibition by 10 min pretreatment of 10 |?mol/L ODQ (a specific inhibitor of guanylate cyclase). In contrast, thiol-alkylating agent N-ethylmaleimide (1 mmol/L) completely precluded L-Arg-induced inhibition on the whole K+ currents. The results indicate that endogenous NO modulates the delayed rectifier K+ currents in cultured hippocampal neurons mostly through S-nitrosylation.

AIM: To study the pharmacokinetics of flavonoids in mice after ig administration of Xiexin Decoction (Radix et Rhizoma rhei, Rhizoma coptidis, Radix Scutellariae). METHODS: Mice were given a single ig dose of Xiexin Decoction 4.5, 9.0 or 18.0 g/kg. Flavonoids in plasma were analysed by HPLC and plasma concentration of baibalin was determined. Pharmacokinetic parameters were calculated from the plasma concentration-time data with the DAS software package. RESULTS: After ig administration of Xiexin Decoction in mice, baicalin, baicalein and another flavonoid were detected in plasma and baicalin concentration was the highest of the three kinds of flavonoids in plasma. After a single ig dose of Xiexin Decoction 4.5, 9.0 or 18.0 g/kg, the pharmacokinetic parameters of baicalin were as follows:T_ 1/2 =2.77、5.69、6.20 h,AUC_ 0-∞ =9.09、23.49、39.57 ?g?h/mL,CL= 12.52 、 6.962 、 11.50 L?h/kg,V_d= 50.11 、 79.56 、 102.95 L/kg,C_ max1 =1.89、3.32、4.79 ?g/mL(T_ p1 = 0.08 h ), C_ max2 =1.46、2.57、4.16 ?g/mL(T_ p2 =3 h), respectively. CONCLUSION: Three kinds of flavonoids can be absorbed after ig administration of Xiexin Decoction in mice, of which baicalin is the major component.

Objective: To investigate the effect of potassium channel opener nicorandil on myocardial ischemia-reperfusion injury (MIRI) in isolated rat's heart. Methods: Langendorff system was established for isolated heart reperfusion. A total of 44 rats were randomly divided into 4 groups: Normal control group, Ischemia-reperfusion (I-R) group, Adenosine/I-R (A/I-R) group, the I-R heart was treated by adenosine 100 μmo/L and Nicorandil/I-R (N/I-R) group, the I-R heart was treated by nicorandil 200 μmo/L.n=11 in each group. Left ventricular developed pressure (LVDP), the maximal rise/fall rate of left ventricular pressure (±dp/dtmax), reperfusion arrhythmia (RA) and myocardial infarction (MI) size were recorded; the expressions of left ventricular tissue acetaldehyde dehydrogenase 2 (ALDH2), Bcl-2 and Bax were examined and compared among different groups. Results:①Compared with I-R and A/I-R groups, N/I-R group had increased LVDP at 30 min and 45 min reperfusion, allP<0.05.②Compared with N/I-R and A/I-R groups, I-R group showed reduced ±dp/dtmax at 30 min and 45 min reperfusion, allP<0.05; while ±dp/dtmax in N/I-R group was higher than A/I-R group at 30 min and 45 min reperfusion, all P<0.05.③Compared with I-R group, both N/I-R and A/I-R groups presented reduced RA score, allP<0.01, RA score was similar between N/I-R group and A/I-R group,P=0.771.④compared with I-R group, both N/I-R and A/I-R groups had the smaller MI size,P<0.01 and N/I-R group showed the smaller MI size,P<0.05.⑤Compared with Normal control group, I-R group had decreased mitochondrial ALDH2 expression and increased Bcl-2, Bax expression; ALDH2 level was elevated in N/I-R group had reduced in A/I-R group; Bcl-2 and Bax levels were increased in both N/I-R and A/I-R groups. Compared with I-R group, both N/I-R and A/I-R groups had increased ratio of Bcl-2/Bax,P<0.05; the anti-apoptosis effect was similar between N/I-R group and A/I-R group,P>0.05. Conclusion: Nicorandil may reduce MIRI and protect myocardium in isolated rat's heart, the overall effect is better than adenosine. Nicorandil can up-regulate the expressions of mitochondrial ALDH2, Bcl-2 and down-regulate the expression of Bax.