Adult ; Antibodies, Monoclonal, Murine-Derived ; administration & dosage ; therapeutic use ; Connective Tissue Diseases ; complications ; Female ; Humans ; Lung Diseases ; complications ; Middle Aged ; Rituximab ; Thrombocytopenia ; drug therapy ; etiology ; Young Adult

Objective: To investigate the effects of different processing methods (steeping, boiling) and different adjuvants (alum, ginger, bile) on toxicity and adverse effect of Arisaema Amurense Maxim. Methods: The determinations of toxicity and adverse effect were performed by tasting of hot and tingle, test of stimulating rabbit eyes and acute toxicity test. Results: The product processed by alum is better than that by ginger in eliminating hot and tingle taste. The product processed by heating is better than that without heating. The test result of stimulating rabbit eyes is similar to that of hot and tingle taste. The result of acute toxicity test indicates that the toxicity of Arisaema Amurense Maxim is low. Conclusions: It is scientific that Arisaema Amurense Maxim. is mostly processed by alum and heat. The clinical application of Arisaema Amurense Maxim. has a certain safety.

The purity of 4,4′-dimethoxy-5,6,5′,6′-bis (methylenedioxy)-2′-morpholine methylenebiphenyl-2-methyl formate methanesulfonate (IMH), a new drug for fatty liver treatment, was determined through differential scanning calorimetry (DSC). Analysis of two-factor non repeatability method was performed in the investigation the effects of two factors (heating rate and sample weight) on purity determination. The DSC experimental parameters were optimized as follows: heating rate was 10 ℃·min^-1, temperature range was 150-300 ℃, sample weight was 2.0-4.1 mg, and N₂ flow rate was 80 mL·min^-1. The linear correlation coefficient (r) of this DSC method was 0.999 8. The RSD value (n = 6) of precision was 0.03%. The standard value and uncertainty of the purity results of the multiple batches of IMH drugs were (99.74 ± 0.29)%, (99.91 ± 0.28)%, (99.90 ± 0.28)%, and (99.81 ± 0.28)% with inclusion factor (K) of 2 and confidence probability (P) of 0.95. The results were basically consistent with the results of the mass balance method. The DSC mehod is a simple, rapid and accurate method, and provides a new reference method for determining the purity of IMH drugs, improves the accuracy and reliability of purity determination.

AIM:To determine the injured effect of cerebrospinal fluid(CSF) from subarachnoid hemorrhage(SAH) after cerebral lymphatic blockage(CLB) on PC12 cells. METHODS:SAH and CLB models of adult New Zealand rabbits were used. CSF was obtained from experimental animals after 5 d of modeling and was added into cultured PC12 cells. The cells were randomly divided into blank control(F12 Ham's),normal CSF,SAH CSF,and SAH+CLB CSF groups. At different time points,the survival rate of PC12 cells was measured by MTT assay. LDH leakage was detected. Expression of Bax and heat-shock protein 70(HSP70) was determined by immunohistochemical staining. RESULTS:MTT assay and detection of LDH leakage revealed that the survival rate of PC12 cells was obviously inhibited and the leakage of LDH increased in SAH CSF group and SAH+CLB CSF group. CSF from normal rabbit did not damage the PC12,as compared to blank controls. Above effects were more obvious in SAH+CLB CSF group than those in SAH CSF group. Bax and HSP70 protein expression was found in both SAH CSF group and SAH+CLB CSF group. Expression of Bax protein in SAH+CLB CSF group was stronger than that in SAH CSF group in a time dependent manner. At 0.5 h and 1 h,the expression of HSP70 protein in SAH+CLB CSF group was stronger than that in SAH CSF group,whereas the expression became weaker at 2 h and 4 h in that group. CONCLUSION:Blockage of cerebral lymphatic drainage pathway deteriorates the damage of CSF from SAH on PC12 cells,indicating this pathway may acts as an endogenous protective mechanism in SAH.

Objective: To investigate the new processing method of Arisaema Amurense Maxim. Methods: Referring to hot and and tingle taste, we have screened out the best condition in processing Arisaema Amurense Maxim. by testing in orthogonal designs, and compared stimulation, extractives and UV of different samples. Results: The new processing method can save half slum according to Ch P. the stimulation of the two samples processed by Ch P & by new method is similar; the water soluble and ethanol soluble extractives and UV of processed samples by new method is better than that by Pharmacopoeia of PR. China. Conclusion: The new method screened out by testing in orthogonal design, can not only eliminate hot and tingle taste, reduce the lose of effective component, but also save a lot of slum.

OBJECTIVETo provide a new material for producing the Rhodiolasachalinensis products, the effect of methyl jasmonate (MeJA) on callus biomass and effective compound accumulation of Rhodiolasachalinensis was studied.

METHODThe calluses-cultured in 3 L-air lift balloon type bioreactor were treated with MeJA after 20 d of bioreactor culture and the effect of MeJA concentration and treatment days on callus biomass, salidroside or polysaccharide accumulation and superoxide dismutase (SOD) and peroxidase (POD) activities were investigated.

RESULTThe callus biomass was not significantly different after MeJA treatment (125) for 0-6 d but obviously decreased after 6 d treatment. The maximum salidroside or polysaccharide contents and SOD or POD activities were found after 4 d treatment of MeJA. MeJA concentration significantly affected callus biomass and effective compound accumulation, biomass decreased at MeJA concentrations higher than 125 μmol x L(-1). However, the effective compound contents were determined at higher MeJA concentration, and the highest salidroside and polysaccharide accumulation was found at 225 and 275 μmol x L(-1) MeJA, respectively and the maximum SOD and POD activities was found at 225 μmol x L(-1) MeJA. The effective compound contents in callus were compared with field-grown plants. Salidroside contents in calluses were 1.1-fold and 2. 4-fold more than in plant roots and stem or leave, respectively. Polysaccharide content in calluses were 3. 6-fold and 8.0-fold more than in plant roots and stem or leave, respectively.

CONCLUSIONSalidorside and polysaccharide in Rhodiolasachalinensiscalluses improved by MeJA treatment, 225 μmol x L(-1) MeJA and 4 d treatment were optimal. The effective compound contents in callus were obviously higher than in field-grown plants. Therefore, bioreactor culture is efficient for obtaining mass effective compounds of Rhodiolasachalinensis by culturing calluses. This method could provide an alternative material source for production of Rhodiolasachalinensis products.

Acetates ; pharmacology ; Biomass ; Bioreactors ; Cyclopentanes ; pharmacology ; Glucosides ; metabolism ; Oxylipins ; pharmacology ; Peroxidase ; metabolism ; Phenols ; metabolism ; Polysaccharides ; metabolism ; Rhodiola ; metabolism ; Superoxide Dismutase ; metabolism

Objective:To observe the effects of electroacupuncture (EA) of three different frequencies (2 Hz,80 Hz and 2 Hz/80 Hz) on the free radicals in hippocampus of vascular dementia (VD) model mice.Methods:A total of 100 Kunming mice were randomly divided into a sham operation group,a model group,a 2 Hz EA group,an 80 Hz EA group and a 2 Hz/80 Hz EA group,with 20 mice in each group.The ischemia-reperfusion VD model was established by repeated blockade of bilateral common carotid arteries.Mice in EA groups began EA treatment on the 4th day after the operation.Baihui (GV 20),Dazhui (GV 14),Geshu (BL 17) and Zusanli (ST 36) were punctured and then connected to EA instrument,with different waves of 2 Hz,80 Hz or 2 Hz/80 Hz (10 min/time) applied accordingly,once a day.During the jumping stand experiment,the learning performance,memory performance and hippocampal calcitonin gene-related peptide (CGRP),nitric oxide synthase (NOS),malondialdehyde (MDA),changes in superoxide dismutase (SOD) and true choline esterase (TChE) were observed.In hippocampus,the CGRP level was determined by radioimmunoassay;the MDA level was determined by thiobarbituric acid colorimetric method;the activities of NOS and TChE were determined by spectrophotometry;the activity of SOD was determined by xanthine oxidase method.Results:Compared with the sham operation group,the performances of learning and memory decreased significantly in the model group (P＜0.01);in hippocampus,the CGRP level decreased,the MDA level increased,the activities of NOS and TChE increased,and the activity of SOD decreased in the model group.Compared with the model group,the learning and memory performances of the EA groups were significantly improved (P＜0.05 or P＜0.01);in hippocampus,the CGRP level increased,the MDA level decreased,the NOS and TChE activities decreased,and the SOD activity increased (P＜0.05 or P＜0.01).Among EA groups,the 2 Hz/80 Hz EA group was superior to the 2 Hz EA group and the 80 Hz EA group (P＜0.05 or P＜0.01).Conclusion:EA can improve the cognitive impairment of mice with ischemia-reperfusion VD.The mechanism may be related to the improvement of cerebral blood circulation,regulation of the central neurotransmitters,fighting lipid peroxidation and promoting nerve cell repair.The therapeutic effects of EA with different frequencies were different,and the intervention effect by EA at 2 Hz/80Hz is the most significant.

The purpose of this study was to investigate the molecular mechanism by which miR-21 and its target genes mediate radiation resistance of glioblastoma cells. Real-time PCR was employed to detect miR-21 expression in normal brain tissues, glioblastoma tissues and glioblastoma cell lines (A172, T98G and U87MG). T98G cells were transfected with anti-miR-21 oligonucleotides, or plasmids containing PDCD4 or hMSH2 (PDCD4-pcDNA3 and hMSH2-pcDNA3). The survival curve was obtained to investigate the sensitivity of T98G cells to radiation. Cell apoptosis was measured by using the Caspase-3/7 kit and cell cycle by flow cytometry. Western blotting was performed to detect the expression of hMSH2 and PDCD4 in miR-21-inhibiting T98G cells. The results showed that miR-21 expression in glioblastoma cells and tissues was conversely associated with the radiation sensitivity. Over-expression of miR-21 resulted in radiation resistance, while knockdown of miR-21 led to higher sensitivity of glioblastma cells to radiation. After miR-21 knockdown, the apoptosis of T98G cells was significantly increased and the G(2) phase arrest was more significant. In addition, miR-21 knockdown increased the expression of endogenous PDCD4 and hMSH2, which contributed to the apoptosis and G(2) arrest of T98G cells. The findings suggested that miR-21 may mediate the resistance of glioblastoma cells against radiation via its target genes PDCD4 and hMSH2. MiR-21 and its target genes may be used as potential molecular targets for clinical radiotherapy sensitization in the future.
Apoptosis Regulatory Proteins ; genetics ; Cell Line, Tumor ; Glioblastoma ; genetics ; Humans ; MicroRNAs ; genetics ; MutS Homolog 2 Protein ; genetics ; RNA-Binding Proteins ; genetics ; Radiation Tolerance ; genetics

OBJECTIVETo investigate the relationship between body mass index(BMI) and blood pressure, blood lipid level, blood glucose, left ventricular structure and function in adolescents during transition period.

METHODSA vertical sectional survey on 193 pupils aged 7-11 years in primary school in 1996 was performed. 9 years later, the same research subjects aged 16-20 years were studied again in 2005. The subjects were divided into obesity,overweight and normal weight groups according to their BMI in 1996. Height, body weight, blood pressure, total cholesterol, triglyceride and blood glucose were collected and analyzed, and left ventricular structure and function were examined by echocardiography.

RESULTSBody mass index (24.71 kg/m(2)+/-4.57 kg/m(2), 20.54 kg/m(2)+/-2.84 kg/m(2) ), systolic blood pressure (117.22 mm Hg+/-17.44 mm Hg vs. 102.20 mm Hg+/-11.68 mm Hg), thickness of inter-ventricular septum and posterior wall (0.87 cm+/-0.12 cm vs. 0.77 cm+/-0.12 cm, and 0.91 cm+/-0.13 cm vs. 0.79 cm+/-0.31 cm), left ventricular mass and mass index (167.84 g+/-16.29 g vs. 128.95 g+/-63.00 g, and 88.12 g/m(2) +/-17.19 g/m(2) vs. 79.35 g/m(2)+/-39.01 g/m(2)) were found significantly higher in obesity group than in normal weight group 9 years later (P<0.05, P< 0.01 or P< 0.001). End diastolic volume and cardiac output were increased(P <0.05) and ejection fraction and fractional shortening decreased( P< 0.05). There were no differences found in cardiac diastolic function between the studied groups.

CONCLUSIONThe results suggested that simple obesity in childhood was an important cardiovascular risk factor when they grew into adolescents and adults. ;

Adolescent ; physiology ; Adult ; Blood Glucose ; Blood Pressure ; Body Mass Index ; Child ; China ; Cohort Studies ; Female ; Heart Ventricles ; anatomy & histology ; Humans ; Lipids ; blood ; Longitudinal Studies ; Male ; Ventricular Function, Left ; Young Adult

OBJECTIVETo investigate the pollution of hexavalent chromium in the electroplating workplace and screen the biomarkers of chromium exposure.

MATERIALField occupational health investigation was conducted in 25 electroplating workplaces. 157 electroplating workers and 93 healthy unexposed controls were recruited. The epidemiological information was collected with face to face interview. Chromium in erythrocytes was determined by graphite furnace atomic absorption spectrophotometer.

RESULTSThe median of short-term exposure concentration of chromium in the air at electroplating workplace was 0.06 mg/m(3) (median) and ranging from 0.01 (detect limit) to 0.53 mg/m(3)). The median concentration of Cr (VI) in erythrocytes in electroplating workers was 4.41 (2.50 ∼ 5.29) µg/L, which was significantly higher than that in control subjects [1.54 (0.61 ∼ 2.98) µg/L, P < 0.01]. After stratified by potential confounding factors such as gender, age, smoking status and alcohol consumption, significant differences still existed between electroplating workers and control subjects, except for the subjects of age less than 30 years old (P = 0.11).

CONCLUSIONThere was hexavalent chromium pollution in electroplating workplace. Occupational hazards prevention measures should be taken to control the chromium pollution hazards.

Adult ; Air Pollutants, Occupational ; analysis ; Chromium ; blood ; Electroplating ; Environmental Monitoring ; Erythrocytes ; chemistry ; Female ; Humans ; Male ; Middle Aged ; Occupational Exposure ; analysis ; Workplace ; Young Adult