BACKGROUND: The effective fraction of stem and leaf of Scutellaria baicalensis, total flavones from stem and leaf of Scutellaria baicalensis (SSTF) can improve blood flow of coronary artery and cerebral blood flow,prolong the time of cruor and prothrombin and decrease blood lipid.OBJECTIVE: To observe the effect of SSTF on blood pressure of normal rats and rat models of renal artery stenosis.DESIGN: A completely randomized and controlled experiment.SETTING: Institute of Traditional Chinese Medicine, Chengde Medical College (Key Laboratory of Research and Exploiture of Traditional Chinese Medicine in Hebei Province) MATERIALS: Totally 70 Wistar rats, aged 2 months old , of clean degree, with body mass of (250±50) g, male and female in half, with permission number of 01-3003 , were provided by the Experimental Animal Research Institute, Chinese Academy of Medical Sciences. SSTF was provided by the phytochemical laboratory of Institute of Traditional Chinese Medicine, Chengde Medical College; Niuhuangjiangya pian was produced by Shiyitang Pharmaceutical Factory, Hayao Company (batch number:9802304).METHODS: The experiment was conducted in Institute of Traditional Chinese Medicine, Chengde Medical College from January to October 1999. The rats were raised in the environment of (22±1) ℃, with relative humidity of 50%-55%, of daylight and darkness for 12 hours for each. ①In the experiment 1, we studied the effect of SSTF on the blood pressure of normal rats. Totally 30 Wistar rats were randomly divided into SSTF group of 100 mg/kg (n=10, 100 mg/kg SSTF), SSTF group of 50 mg/kg (n=10, 50 mg/kg SSTF), and normal saline control group (n=10, 0.5 mL /100 g normal saline). Before being administrated, rats were anaesthetized by intraperitoneal injection of pentobarbital sodium. Blood pressure was recorded by MecLab/4e four-channel physiologic instrument. Then intragastric administration of SSTF and normal saline were performed on the rats in SSTF groups and normal saline control group respectively. Thirty minutes later, the changes of blood pressure of rats in each group were observed successively. ②In the experiment 2, we studied the effect of SSTF on the blood pressure of model rats with hypertension induced by renal artery stenosis. The rest 40 Wistar rats were randomly divided into SSTF group of high dosage, SSTF group of low dosage, normal saline control group, Niuhuangjiangya pian group, with 10 rats in each group. Rats in each group were created into rat models with hypertension induced by renal artery stenosis according to methods from the literatures. Two weeks after operation, intragastric administration of 100 mg/kg SSTF, 50 mg/kg SSTF, 0.5 mL/100 g normal saline and 1 200 mg/kg Niuhuangjiangya pian were daily performed on the rats in four groups respectively for one month successively. Carotid blood pressure of rats in all groups was measured.MAIN OUTCOME MEASURES: ① The effect of SSTF on the blood pressure of normal rats. ②The effect of SSTF on the blood pressure of model rats with hypertension induced by arteria renalis stenosis.RESULTS: ① Effect of SSTF on the blood pressure of normal rats: Blood pressure of SSTF group of 50 mg/kg and SSTF group of 100 mg/kg presented a little decrease compared with before administration. There was no significant difference when compared with normal saline control group (P ＞ 0.05). ②Effeet of SSTF on the blood pressure of model rats with hypertension induced by arteria renalis stenosis: Blood pressure of rats with hypertension in normal saline control group was significantly increased after modeling; Blood pressure of rats with hypertension in SSTF group of 50 mg/kg , SSTF group of 100 mg/kg and Niuhuangjiangya pian group was significantly lower than that in the normal saline control group, especially significantly in SSTF group of 100 mg/kg [(126.3±14.5),(120.2±15.9),(127.8 ±23.4 ) ,(139.6±15.8) mm Hg; P ＜ 0.05-0.01].CONCLUSION: SSTF has the significant hypotensive effect on model rats with hypertension; it does not have obvious effect on normal rats.

OBJECTIVE To analyze situation of clearence of rust in the surgical operation apparatus.METHODS 300 surgical operation apparatus were choosed,divided into the A,B,C groups.For group A,soak method was taken to clear the rust,group B with soak and hand scrub in method,group C with soak.hand scrub and lubricant method.RESULTS The method for group C was most effective.The qualified rate and re-rust rate were 99.0% and 2.0%,respectively.CONCLUSIONS Clearence is a better method for operation apparatus maintanance,but daily cleaness is also important to avoid rusting.

Objective To explore the association between impulsively aggressive behavior and rs6922753 single nucleotide polymorphism of glutamate receptor 6 (GluR6) gene in Xinjiang Uygur and Han patients with bipolar disorder.Methods The techniques of polymerase chain reaction (PCR) and DNA sequencing technique were conducted to detect rs6922753 single nucleotide polymorphism of GluR6 gene in 240 patients with bipolar disorder.The association between the polymorphisms and impulsively aggressive behavior was analyzed with SPSS 17.0 software.Results No statistical difference was observed between the impulsively aggressive behavior group and the no impulsively aggressive behavior group of Xinjiang Han and Uygur patients with bipolar disorder in the genotype and allele frequencies for the investigated rs6922753 polymorphisms (P ＞ 0.05).Conclusions No association was found between the impulsively aggressive behavior and rs6922753 single nucleotide polymorphism of GluR6 gene in Xinjiang Uygur and Han patients with bipolar disorder.

Objective To investigate the neuropathic pain (NP) accompanying spinal cord injury (SCI),and to analyze the related factors to provide references for its prevention and treatment.Methods Seventy SCI patients with NP were selected using the DN4 scale.Their age,gender,occupation,education level,monthly income,injury position,marital status and other data were surveyed using a general questionnaire.Their NP situation was surveyed using a simplified McGill pain questionnaire (SF-MPQ).Results The patients' average visual analogous scale (VAS) score was 4.37.Their average pain rating index (PRI) according to the SF-MPQ was 8.23,with the PRI-sensory and PRI-emotional components 5.23 and 3.00 respectively.The average degree of present pain intensity was 1.86,between mild pain and discomfort,and discomfort was the description most commonly used.The most common pain descriptor was prickling pain,followed by burning pain and bulge pain.85.7％ of the patients felt that their pain had an adverse effect on their affective state,and exhaustion occurred more often than any other descriptive words.Univariant analysis showed that the degree of injury,education level,marital status,monthly income,family support and medication history were all factors correlated with NP perceptions.Multi-variate logistic regression analysis showed that being unmarried and severity of injury were independent protective factors against NP.No family support,no medication and low income were independent risk factors for NP.Conclusion The type of neuropathic pain varies in patients with spinal cord injury.The intensity of the pain is mostly at a medium level.The emotional state of most patients was affected.Neuropathic pain involves many factors.Being unmarried and severely injured are independent protective factors,while lack of family support,no medication,and having low income were independent risk factors.

Objectives:To evaluate lung injury mechanism in SD rat with nitrogen dioxide(NO2) exposure. 　Methods:In the test-control study, pulmonary malondialdehyde(MDA),glutathione(GSH) and total-antioxidant content(T-AOC) were determined in 10 SD rats with long-term NO2 exposure,10 SD rats with short-term NO2 exposure and 10 SD rats with fresh air as control. 　Results: Pulmonary MDA content was increased and T-AOC was decreased significantly in SD rat exposed to NO2. Pulmonary GSH was decreased significantly in long-term NO2 exposure group as compared with short-term NO2 exposure group and control group. 　Conclusions: Imbalance between oxidant and antioxidant was an important mechanism in the pathogenesis of oxidizing lung injury in SD rat with NO2 exposure.

Animals ; Carps ; physiology ; Galvanic Skin Response ; drug effects ; physiology ; Skin ; cytology ; Strychnine ; pharmacology ; Synaptic Transmission ; drug effects ; physiology

Genomics ; Medicine, Chinese Traditional

Adolescent ; Adult ; Aged ; Blood Coagulation Disorders ; Blood Coagulation Factors ; Case-Control Studies ; Child ; Female ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Vitamin K ; Vitamin K Deficiency ; Young Adult

Objective To investigate the effect of ulinastatin on acute lung injury in rats with severe heatstroke.Methods Fourty-eight rats were randomly (random number) assigned into control group (HS group,n =12),low dose Ulinastatin group (LUTI group,n =12),high dose Ulinastatin group (HUTI group,n =12) and non-thermal group (Sham group,n =12).Rats were prepared with pre-warm chamber to initiate heatstroke.The change of rectum temperature (Tc),heat-rate (HR) and mean arterial pressure (MAP) under heat-stress were recorded.The time-point of heatstroke onset and Tc ＞42 ℃ was observed.Arterial blood samples were draw at 0 min,20 min,40 min and 60 min for testing partial pressure of oxygen (PaO2) and partial pressure of carbon dioxide (PaCO2).Bronchoalveolar lavage fluid (BALF) were collected at 60 min,and the concentrations of tumor necrosis factor-α (TNF-α),interleukin-1β (IL-l β) and interleukin-6 (IL-6) in BALF were measured with enzyme linked immunosorbent assay kit.Lung tissues were harvested for observing pathological change and measuring the expression of iNOS with Western blot test.Results Compared with HS group,the time-point of Tc ＞ 42℃ (P =0.00),severe heat-stroke (P =0.00) and the median of survival time (P =0.00) in LUTI and HUTI groups were significantly increased.At 60min after heat-stress,the level of PaO2 in HS group was much lower than those in other groups (P =0.00).But there were no differences between LUTI and HUTI groups (P =0.91).The value of PaCO2 in HS group was much higher than those in other groups (P =0.00).And the differences between LUTI and HUTI groups were no significant (P =0.79).The concentrations of TNF-α,IL-1β and IL-6 in HS group was the highest in four groups (P =0.00,P =0.04 and P =0.04),followed by LUTI,HUTI and Sham group.The concentrations of proinflammatory cytokine in LUTI were higher than those in HUTI group (P =0.02,P =0.00,P =0.00).Compared with HS group,the pathological injuries were alleviated in LUTI and HUTI group (P =0.00).The expression of iNOS in lung tissue of HS group was strengthened than LUTI and HUTI group (P =0.00),and there was a significant difference between LUTI and HUTI group (P =0.03).Conclusion Ulinastatin improves respiratory dysfunction and the prognosis of severe heatstroke rats through reducing the inflammatory and oxidative injury in lung tissue.

AIM:To study pharmacokinetic of Pueraria Flavonid Nasal Drop in rabbits through nasal administration in comparison with oral administration. METHODS:Ten New Zealand rabbits were divided into two groups randomly and administrated nasally and orally (106.4 mg/kg of pueraria flavonid). HPLC was adopted to detect pueraria flavonoid content and DAS 2.0 was used to calculate bioavailability. RESULTS:The main pharmacokinetic parameters of nasal and oral administrations were AUC (0-∞)1 =(30.55?4.93)mg/(L?h),T max1 =(0.90?0.14)h,C max1 =(11.27?1.66)mg/L;AUC (0-∞)2 =(6.90?2.76)mg/(L?h),T max2 =(0.63?0.34)h,C max2 =(1.68?0.84)mg/L. Relative bioavailability of nasal delivery was 442.8%. CONCLUSION:Pueraria Flavonoid Nasal Drop is well absorbed in rabbits and has high bioavailability.