Objective:To explore the optimum digestion condition by orthogonal design, and determine the chromium content in Carthami flos by atomic absorption spectrometry ( AAS) to provide the experimental basis for the establishment of trace element limit standard. Methods:The conditions of microwave digestion were optimized using L9 (34 ) orthogonal experimental design, and chromi-um was determined by graphite furnace ( GF)-AAS. Results:The optimal digestion conditions were as follows:nitric acid-hydrochloric acid system was with the ratio of 6∶2, the highest resolution temperature was 185 ℃ with the duration of 25 minutes. The chromium content in 15 batches of Carthami flos was with significant differences. The chromium content in 15 batches of Carthami flos was detec-ted withhin the range of 0. 53-88. 15 mg·kg-1, the average recovery was 97. 1% and RSD was 2. 2%(n=9). Conclusion: The method is simple, accurate and reproducible, and can be used in the quality control of chromium in Carthami flos.

OBJECTIVE:To prepare the norcantharidin (NCTD) nano-micelle and study its antitumor effect. METHODS:NCTD nano-micelle was self-formed in water using Triblock copolymers distearyl phosphatidylethanolamine-polyethylene glycol-ma-leimide;its shape was observed,the drug-loading rate,entrapment efficiency,particle size,Zeta potential were investigated. MTT was used to investigate the cell survival rate of human lung cancer A549 cells in negative control group (Phosphate buffer solu-tion),carrier group (blank nano-micelle),positive control group (NCTD APIs,5-320 μg/mL) and NCTD nano-micelle group (NCTD,5-320 μg/mL) after acting different time (24,48,72 h). Tumor nude mice were randomly divided into blank control group,NCTD injection group(1 mg/kg),NCTD low-dose,high-dose groups(0.5,1 mg/kg),6 in each group. All mice were in-travenously injected relevant medicines in tail,once a day,for 8 weeks. Tumor size was measured every week,and tumor quality was detected after the second day of finishing administration. RESULTS:NCTD nano-micelle was round,drug-loading rate was (2.82±0.05)%,entrapment efficiency was(83.67±1.78)%,particle size was(138.6±45.8)nm,Zeta potential was -(12.75± 0.34)mV(n=6). Cell survival rate of A549 cells in carrier group had no obvious changes,and was obviously decreased in posi-tive control group and NCTD nano-micelle group,which was positively correlated with concentration and time. And the decrease degree of cell survival rate in NCTD nano-micelle group was stronger than positive control group(P<0.01). Compared with blank control group,the tumor quality of mice in 3 administration groups was reduced (P<0.05),the reduction degree in NCTD na-no-micelle high-dose group was stronger than NCTD nano-micelle injection group (P<0.05). CONCLUSIONS:NCTD nano-mi-celle is successfully prepared,which has good in vitro and in vitro anti-tumor effect on A549 cells.

Objective To investigate airway inflammation,number of eosinophils in blood and BALF,the expression of inhibitor protein ?(I ?B ?) and nuclear factor-?B(NF-?B) activity in lung of rat with spleen deficiency asthma,and the effect of herbs of reinforcing spleen to replenishing Qi.Method Thirty rats were randomly divided into three groups:control group(group A),spleen deficiency asthma group(group B),decoction group(group C).The pathological changes of lung was detected by HE staining,and the expression of I ?B ? and activity of nuclear factor ?B p65(NF-?B p65) was assessed in lung by immunohistochemistry.Results Compared with group A,the expression of I ?B ? significantly reduced(P

Objective To investigate the effect of the eye-acupuncture therapy on serum TNF-α levels in rats with cerebral ischemia-reperfusion injury and the related mechanism. Methods Healthy SD rats were randomly divided into four groups: normal group, sham-operated control group, ischemia-reperfusion model group and eye-acupuncture group according to body weight. Sham-operated control group, ischemia-reperfusion model group and eye-acupuncture group were divided into the 3h group, the 24h group and the 72h group, a total of 10 groups (n=8). To establish the rat model of cerebral ischemia-reperfusion by suture method in ischemia-reperfusion model group and eye-acupuncture group. Eye-acupuncture was separately started immediately after reperfusion and at 30 min before sampling in the 3h eye-acupuncture group, besides, eye-acupuncture was separately taken every 12h in the 24h eye-acupuncture group and in the 72h eye-acupuncture group. The rats in normal group were not treated, those in sham-operated control group were inserted the fishing thread 1cm, and the others were identical with those in ischemia-reperfusion model group. At 3h, 24h, 72h after reperfusion, the neurophysical behaviours were accessed by ZeaLonga neurophysical impairment marks in ischemia-reperfusion model group and eye-acupuncture group. The method of ELISA was taken to detect the change of serum TNF-α levels in rats after the eye-acupuncture therapy. Results Compared with the ischemia-reperfusion model group, the neurologic impairment score of the eye-acupuncture group decreased obviously; The levels of serum TNF-αin ischemia-reperfusion model group at 3 h, 24 h, 72 h respectively were(76.803±18.325)pg/ml、(85.511±13.334)pg/ml、(86.831±9.232)pg/ml. The level of serum TNF-α in normal group was(24.304±6.511)pg/ml. The level of serum TNF-α in Sham-operated control group at 3 h, 24 h, 72 h respectively were(24.928±3.792)pg/ml,(27.533±5.362)pg/ml,(29.366±5.874)pg/ml. Ischemia-reperfusion model group compare with normal group and sham-operated control group, the difference were significant(P＜0.01). The levels of serum TNF-α in rats after the eye-acupuncture therapy at 3 h, 24 h, 72 h respectively were(40.185±3.335)pg/ml, (48.523±7.687)pg/ml, (51.611± 6.403)pg/ml. Compared with ischemia-reperfusion model group, the levels of serum TNF-α were strongly reduced(P＜0.01). Conclusion The eye-acupuncture therapy could play a role in improving cerebral ischemia-reperfusion injury evidently and the mechanism was related to its reducing serum TNF-α levels.

Objective To investigate the protective effect of crocin on oxidative stress cell model of PC 12 cell and the effect of crocin on PI3K/Akt signal pathway,as well as further explore the mechanism of protective effect on model cells.Methods Cells were divided into control group,model group,crocin group and VE group.The cell survival rate was detected by MTT method,and the expression of mRNA and protein of PI3K/Akt were detected by RT-PCR and Western blot.Results With the crocin concentration in 0.625 μM and 5 μM,the cell survival rate increased in a dose-dependent manner.The average optical density rate of PI3K and Akt mRNA were 0.435±0.044 and 0.375 ± 0.034,and the PI3K and Akt protein were 0.378± 0.038 and 0.386± 0.043 of crocin group.Compared with the model group,the expression levels of PI3K/Akt increased in crocin group (P＜0.05).Conclusion These results indicate that the antioxidant and antiapoptosis effects of crocin are induced via increasing expression of PI3K and pAkt.

Objeetive To investigate the changes of kidney cortex hemoperfusion before and after extracorporeal shock wave lithotripsy (ESWL) with contrast-enhanced ultrasonography (CEUS) and time-intensity curve.Methods Thirty patients of renal calculi were treated with ESWL and examined with CEUS before and after ESWL.Renal cortex blood perfusion parameters of the lithotriptic areas,including the contrast agent arrival time (AT) ,time to peak (TTP) .peak intensity (PI) and velocity parameters (β) were quantitatively measured with ACQ software.Results The value of AT,TTP and β were not significantly different before and after ESWL (P＞0.05) .PI value after ESWL was lower than that before ESWL (P＜0.05) . Conclusion CEUS can quantitatively evaluate the changes of kidney cortex hemoperfusion after ESWL,and reflect the minor renal damage resulted from ESWL.CEUS can be used as a new method of observing and evaluating the renal damage caused by ESWL.

Objective To discuss Si tactic of breathing exercises on the rehabilitation of lung function, dyspnea, distance of 6-minute walk distance (6MWD), respiratory muscle endurance and quality of life in stable patients with chronic obstructive pulmonary disease (COPD). Methods 63 patients with COPD were divided into experimental group with 31 cases and control group with 32 cases according to random digital table method. The experimental group were given routine treatment and nursing care, take Si tactic of breathing exercises. The control group were given routine treatment and nursing care only. Both groups were given treatment for 4 months. The indexes of lung function (FEV1, FEV1%, FEV1/FVC), scores of the Modified Medical Research Council Scale (MMRC), 6MWD, scores of Saint-George′s Respiratory Questionnaire (SGRQ), maximal voluntary ventilation (MVV) changes before and after the therapy were measured. Results After intervention, the lung function as measured by FEV1, MVV, 6MWD showed a significant improvement in the experimental group, and was higher than that in the control group[(1.42±0.43) L vs.(1.22±0.32) L and(1.21±0.45) L,(52.39±14.21) L vs.(47.20±14.59) L and (43.65±11.89) L, (288.36±71.70) m vs.(244.42±71.50) m and (250.56 ±79.25) m, P<0.05]; MMRC scores, SGRQ scores, activities and daily life part score were lower after intervention and was lower than that in the control group [(2.63 ±1.00) points vs. (3.21 ±0.92) points and (3.14±1.12) points, (44.38±5.23) points vs. (54.74±5.73) points and (52.87±5.49) points, (41.25± 6.03) pints vs.(66.48±6.38) points and (64.13±5.34) points, (28.00±7.34) points vs. (44.87±4.86) points and (42.31 ±9.12) points, P<0.05]. Conclusions For COPD patients in stable stage, Si tactic of breathing exercises can improve the pulmonary function and alleviate dyspnea, enhance exercise endurance and respiratory endurance, thereby improve the quality of life of patients, so this is one of the method for comprehensive pulmonary rehabilitation in the future.

Objective To study the homocysteine induced gene(HCY-2) expression in human fetus arterial smooth muscle cells(hASMCs) in culture and explore the effects of homocysteine(HCY) and folic acid on HCY-2 expression and cell proliferation of hASMCs. Methods Immunohistochemistry ABC staining method was used to observe and analyze HCY-2 expression in hASMCs in culture.The image analysis system was used to research of hASMCs quantificationally.The effect of different HCY concentration on the proliferation of hASMCs was investigated by the cell counting. Results Immunoreactive substance of HCY-2 was chiefly found in cytoplasm of hASMCs.The expression of HCY-2 could be affected by HCY concentrations.There was a positive dose-dependent correlation with HCY concentrations in the culture medium.Folic acid increased the expression of HCY-2.The different concentration of HCY enhanced the proliferation of hASMCs,and this enhancement was maximal at the concentration of 1.25 mmol/L of HCY,while the proliferation was decreased when the concentration of HCY was over 1.25 mmol/L.Conclusion HCY increases the expression of HCY-2,and affects the proliferation of hASMCs.HCY is inhibited by folic acid.

Objective:To explore the significance of next-generation sequencing to detect gene mutations for diagnosis of patients with unexplained pancytopenia.Methods:The next-generation sequencing was used to detect 32 common hematological tumor gene mutations in 113 patients with unexplained pancytopenia in Huazhong University of Science and Technology Union Shenzhen Hospital from February 2016 to February 2019.Results:The next-generation sequencing results showed that of the 32 genes tested in 113 patients, 69 mutations occurred in 25 genes. Among them, 105 patients (92.9%) carried at least 1 gene mutation, and the median number of mutations was 2 (1-5). Fifty-one patients were diagnosed with myelodysplastic syndrome (MDS), and the related mutant genes were detected; 62 patients were diagnosed with atypical aplastic anemia or cytopenia of unknown significance. The total effective rate of treatment for 113 patients was 65.5% (74/113).Conclusion:The next-generation sequencing helps to diagnose patients with unexplained pancytopenia, and provides targeted strategies for finding new treatments and prolonging the overall survival of patients.