Objective To explore whether pravastatin protects endothelium against the damage induced by homocysteine (Hcy) in isolated rabbit aorta. Methods Endothelium-dependent relaxation responses to acetylcholine (ACh) of thoracic aortic rings were measured by isometric tension recording before and after aortic rings exposed to Hcy in the absence or presence of pravastatin (PT) to estimate the injury effect of Hcy and the protective effect of pravatatin on rabbit aortic endothelium, respectively. Results Incubation of aortic rings with 1～10mmol/L Hcy for 30min significantly inhibited endothelium-dependent relaxation response to ACh of aortic rings in a concentration-dependent manner. Pre-incubation of aortic rings with 0.3～3mmol/L PT for 15min and co-incubation of aortic rings with 3mmol/L Hcy for another 30min markedly attenuated the inhibition of endothelium-dependent relaxation induced by Hcy in a concentration-dependent manner. Conclusion Pravastatin can improve the impairment of endothelium-dependent relaxation induced by Hcy in isolated rabbit aorta.

DNA Methylation ; Humans ; Poly(ADP-ribose) Polymerases ; genetics ; metabolism

Objective To explore the effectiveness of transcranial magnetic stimulation (TMS) combined with hyperbaric oxygen (HBO) in treating cerebral infarction.Methods Totally 120 patients with cerebral infarction were randomly divided into a control group,a treatment group A and a treatment group B,40 cases in each group.The control group was given conventional treatment,the treatment group A was treated by HBO on the basis of conventional therapy,and the treatment group B was treated by HBO combined with TMS,10 d for a period of treatment.Before and after 2 courses of treatment,all patients' neurological defect was evaluated using National Institutes of Health Stroke Scale (NIHSS).Their central motor conduction time (CMCT) and the expression of brain derived neurotrophic factor (BDNF) and nerve growth factor (NGF) were also assessed.Results After treatment,the average NIHSS score and effective rate of the treatment group B was (7.35 ± 1.98) and 92.5％ respectively,significantly better than the other two groups.Moreover,the average BDNF content [(4.96 ± 1.20) ng/ml] and NGF content [(152.36 ± 18.01)pg/ml] of the treatment group B after treatment were significantly better than before treatment,and those of the other two groups after treatment.Conclusion TMS combined with HBO is effective in treating cerebral infarction.This may relate to its strengthening the expression of neurotropic factors.

Aim Tostudytheeffectof4-phenlybuty-rate acid(4-PBA) on the heart function of diabetic rats and to explore its underlying mechanism. Methods MaleSprague-Dawley(SD)ratsweredividedintothree groups randomly: ( 1 ) control rats;( 2 ) diabetic rats;(3) 4-PBA treated diabetic rats. Type 1 diabetic mod-el was induced by single intraperitoneal injection of strepotozotocin (60 mg·kg-1 ) . After five weeks dia-betic model was established, diabetic rats were treated with 4-PBA by P. O at the dose of 1 g·kg-1 per day for 20 weeks. At the end of the experiment, hemody-namics of the left ventricle and main artery were detec-ted through right carotid artery cannulation in rats. The level of blood glucose, the activity of superoxide dis-mutase( SOD) and nitric oxide synthetase ( NOS) and the content of malondialdehyde ( MDA ) and nitric ox-ide( NO) of serum and myocardial tissue in rats were measuredbycolorimetry.Results Thetreatmentof4-PBA had no effect on blood glucose, the weight of body and heart, but slightly increased systolic and diastolic pressure of artery, heart rate, systolic pressure of left ventricular, maximum increase rate and minimum de-crease rate of left ventricular pressure( ± dp/dt) in di-abetic rats. It also slightly decreased diastolic pressure of left ventricular, shortened diastolic duration of left ventricular ( P > 0. 05 ) . Moreover, it significantly shortened relaxation time of left ventricular in diabetic rats (P<0. 05). In addition, the treatment of 4-PBA obviously enhanced the activity of SOD and NOS, NO content, and reduced the content of MDA in serum and heartofdiabeticrats(P<0.05).Conclusion 4-PBA has a potential protective effect on heart function in diabetic rats, which is achieved by ameliorating he-modynamics and significantly improving diastolic dys-function in diabetic rats. The underlying mechanism may be related to the inhibition of oxidative stress and promoting the genesis of NO in myocardial tissue.

Objective To discuss pathological features of three cases of uterine primary NHL(non Hodgkin′s lymphoma).Methods The clinical and pathological data of 3 cases of NHL were collected.Immunohistochemical method was used to label the tumor cells.Their histological types were classified by the latest WHO Classification of Tumors of Haematopoietic and Lymphoid Tissues,and then differential diagnosis with other uterus diseases was offered.Results Three cases were presented with abnormal vaginal bleeding or ejecting as the first symptom,which was easily misdiagnosed as common diseases of the uterus in preliminary clinical and pathological diagnosis.Histopathology of general uterus specimens demonstrated that case one expressed CD3,CD56,TiA-1 and so on,and detected EBV virus cells expression,which supported the diagnosis of NK/T cell lymphoma.Another two cases expressed B cell-specific markers(CD20) and so on,and these tumor cells volume was 3 times larger than that of lymphocyte.These tumor cells had high proliferation index and supported diffuse large B-cell lymphoma diagnosis.Conclusion The tumor cells are like lymphocytes.We infiltrate endometria and myometrium,which is difficult to identify from endometria stromal sarcoma and other tumors,and need to use immunohistochemistry(IHC) for definitive diagnosis and differential diagnosis.

Objective To explore the effects of ingestion of purified drinking water from water treatment devices on health of rats. Methods Under the same feeding conditions, the Wistar rats were divided into different exposure groups exposed to different kinds of drinking water such as electrolytic ion water (alkaline water), reverse osmosis water, middle hollow fabric filtered water, copper-zinc ally (KDF) filtered water, municipal water and source water respectively. The changes of the indexes including organ coefficient, routine blood test, blood biochemistry and electrolyte were observed at the 3rd and the 6th month of the exposure. Results Higher levels of the count of white blood cells and neutrophil, and higher concentrations of seralbumin and total albumin in serum were observed in rats of tap water group compared with those in control group (P

Child ; Drugs, Chinese Herbal ; toxicity ; Ganglion Cysts ; pathology ; Humans ; Leigh Disease ; chemically induced ; diagnostic imaging ; Male ; Medicine, Chinese Traditional ; adverse effects ; Plant Roots ; chemistry ; Radionuclide Imaging ; Sophora ; toxicity ; Tomography, X-Ray Computed

To study the chemical constituents of the Entada phaseoloides (L.) Merr., seeds of Entada phaseoloides were extracted with 70% ethanol at room temperature. Isolation and purification were performed by silica gel, reversed-phase silica gel column chromatography and semi-preparative HPLC. Structures of the pure compounds were established on the basis of spectral analysis. Four sulfur-containing amide compounds were isolated from the n-BuOH-soluble fraction and identified as entadamide A-beta-D-glucopyranosyl-(1-->3)-beta-D-glucopyranoside (1), entadamide A (2), entadamide A-beta-D-glucopyranoside (3) and clinacoside C (4). Compound 1 is a new compound. Compound 4 is isolated from the genus Entada for the first time.

To observe the expression of cyclooxygenase (COX)-1 and COX-2 in brain after spared nerve injury (SNI) and compare the analgesic effects of COX inhibitors with different selectivity. Radioimmunoassay, RT-PCR and Western blotting techniques were used to evaluate the change of brain COX expression at different time points( before SNI, 1 h, 12 h, 1 d, 3 d, 7 d, 14 d, 30 d and 60 d after SNI); By exploring hot plate test, we observed the reacting time of animals after injection of saline, NS-398, SC-560 and indomethacin at different time points. The results showed that: ( 1 ) The expression of brain COX-1 didn't increase significantly until 14 d after SNI, while that of COX-2 increased significantly and rapidly after SNI and reached peak at the time point of 1 d ( all P ＜0.05 ); (2) NS-398 showed significant analgesic effect on neuropathic pain after SNI at the early phase ( P ＜ 0.05 ), but didn't persist for over 30 d; ( 3 ) Indomethacin and SC-560 didn't show significant analgesic effects until 14 d. These results suggest that brain COX-1 is involved in the late phase of neuropathic pain and may play a role in the persistence of pain, while brain COX-2 is involved in the early phase of neuropathic pain and may play a role in the pain origination.