Objective: The aim of the study was to establish a high speed counter-current chromatography (HSCCC) method for the isolation and purification of alpinetin and cardamomin from Alpinia katsumadai. Methods: Two-phase solvent system composed of n-hexane-ethyl acetate-methanol-water (5 : 5 : 7 : 3) was used. The flow rate of the mobile phase was 2.0 mL/min, the revolution speed was 800 r/min, the separation temperature was controlled at 25 °C, the reservation ratio of the stationary phase was 50%, and the detection wavelength was 300 nm. Results: Alpinetin (17.2 mg) and cardamomin (25.1 mg) could be obtained from 100 mg of the crude extract in one-step separation by the method. The purities of them were 98.1% and 99.2%, respectively, as determined by HPLC and their chemical structures were identified by 1H-NMR and 13C-NMR. Conclusion: The traditional method, column elution, could not eliminate irreversible adsorption, while the HSCCC method used for the isolation and purification of alpinetin and cardamomin from A. katsumadai has many advantages, such as facility, high efficiency, and high recovery as well.

Objective:To explore the diagnostic value of 68Ga-prostate specific membrane antigen (PSMA)-11 PET/MR multiparameter multimodal functional imaging in the diagnosis of naive prostate cancer (PCa), and to analyze its efficacy in the early stages of PCa. Methods:From July to September 2019, 45 suspected or pathologically confirmed PCa patients (average age: 69 years) who met the inclusion criteria were collected to perform 68Ga-PSMA-11 PET/MR examination in Nanjing First Hospital. After the scanning was completed, the method of region of interest (ROI) was used to semi-quantitatively calculate the tumor radioactive uptake in the fusion image, including the maximum standardized uptake value (SUV max), tumor metabolic volume (MTV) and mean standardized uptake value (SUV mean), and PSMA expression load was calculated(SUV mean×MTV). Apparent diffusion coefficient (ADC) values of ROI were measured in ADC images ( b=1 500 s/mm 2). The efficacy of 68Ga-PSMA-11 PET/MR in the preoperative diagnosis of PCa and the effect on clinical staging were evaluated with the pathological results. The correlation between prostate specific antigen (PSA) and radiation uptake in PCa tissues, PSMA expression load and ADC values was analyzed by Pearson correlation. Independent-sample t test was used to analyze the data. Results:Pathologically, 38 of the 45 patients were with PCa and 7 patients had benign prostatic hypertrophy (BPH), and metastasis occurred in 12 of the 38 PCa patients. 68Ga-PSMA-11 PET/MR detected 39 cases of PCa with one of which was false-positive. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of 68Ga-PSMA-11 PET/MR were 100%(38/38), 6/7, 97.4%(38/39), 6/6 and 97.8%(44/45), respectively. The tumor tissues of PCa often showed focal radioactive uptake, and the T 2 weighted imaging (WI) showed focal low signal and limited dispersion. BPH showed slightly uneven uptake, and T 2WI and diffusion weighted imaging (DWI) showed uneven diffuse signals. SUV max of PCa was significantly higher than that of BPH (24.66±19.21 vs 4.97±2.13; t=5.208, P<0.001). ADC values of PCa were significantly lower than that of BPH ((0.91±0.37)×10 -3vs (1.08±0.24)×10 -3 mm/s 2; t=2.816, P<0.05). SUV max and the expression loads of PSMA in PCa were positively correlated with PSA ( r values: 0.42 and 0.71, both P<0.05). ADC values of tumor tissues in PCa were negatively correlated with PSA ( r=-0.37, P=0.013). Conclusion:68Ga-PSMA-11 PET/MR has great merits in the early diagnosis and staging of PCa.

Objective To analyze the changes and clinical significance of C-reactive protein (CRP)、hemoglobin (Hb) and erythrocyte sedimentation rate (ESR) in different disease stage of multiple myeloma according the international staging system. Method Thirty untreated MM patients with complete clinical records were included in the stndy. The multiple myeloma patients were classified into three groups according to international staging system (ISS).Thirty megaloblastic anemia patients of similar age 、sex、hemoglobin level as the observation group.Resulets The levels of CRP (24.17±9.87 mg/L)、Hb (71.72±13.27 g/L) and ESR (105.94±27.73 mm/h) of stage Ⅲ patients were statistically different with stage Ⅰ ( CRP 8.54±1.97 mg/L; Hb 91.00±9.92g/L; ESR 73.57±20.53mm/h)、Ⅱ patients ( CRP 14.89±5.51 mg/L; Hb 91.29±8.32g/L; ESR 67.00± 15.56 mm/h) separately (P＜0.05).The levels of CRP (19.40±10.17 mg/L) and ESR (91.90±29.70 mm/h) in the MM patients were significantly higher than that in the observation group Ⅰ ( CRP 7.52±1.57mg/L; ESR 20.20±8.04mm/h) (P＜0.05 respectively).CRP and ESR level in MM patients positively correlated with myeloma cell proportion and β2-microglobulin level (P＜0.05), while Hb level negatively correlated with myeloma cell proportion and β2-microglobulin level (P＜0.05),Conclusion The levels of C-reactive protein、hemoglobin and erythrocyte sedimentation rate are closely associated with the development of multiple myeloma. C-reactive protein and hemoglobin are relatively sensitive response to disease than erythrocyte sedimentation rate. There is a clear clinical implication in detecting the patient' s condition for progress and the prognosis.

Objective To evaluate the effect of hydrogen-rich saline on the expression of phosphor-p38 mitogen-activated protein kinase (p-p38MAPK) during cerebral ischemia-reperfusion (I/R) in rats.Methods Seventy-two adult male Sprague-Dawley rats,weighing 220-250 g,were randomly divided into 3 groups (n =20 each) using a random number table:sham operation group (group S),I/R group and hydrogen-rich saline group (group I/RH).Cerebral ischemia was induced in chloral hydrate-anesthetized rats by 2 h middle cerebral artery occlusion in I/R and I/RH groups.The artery was only exposed but not occluded in group S.At 3 days before operation and immediately after onset of reperfusion,hydrogen-rich saline (0.6 mmol/L) 10 ml/kg was intraperitoneally injected in group I/RH,while the equal volume of normal saline was given in S and I/R groups.Neurological deficits were blindly assessed and scored at the end of 24 h reperfusion.The animals were then sacrificed,and brains were removed for microscopic examination and for determination of the cerebral infarct size (by TTC),brain water content,cell apoptosis (by TUNEL),and expression of p38MAPk and phosphor-p38MAPK (p-p38MAPK) (by immunohistochemistry and Western blot).Apoptosis index was calculated.Results Compared with group S,neurological deficit score,apoptosis index,brain water content and cerebral infarct size were significantly increased,and the expression of p38MAPK and p-p38MAPK was up-regulated in I/R and I/RH groups.Compared with group I/R,neurological deficit score,apoptosis index,brain water content and cerebral infarct size were significantly decreased,and the expression of p38MAPK and p-p38MAPK was down-regulated in group I/RH.The pathological changes of cerebral tissues were significantly attenuated in group I/RH as compared with group I/R.Conclusion Hydrogen-rich saline can reduce cell apoptosis through inhibiting p-p38MAPK expression,thus attenuating cerebral I/R injury in rats.

Objective To evaluate the effect of hydrogen on the activation of caspase-3 in brain tissues during cerebral ischemia-reperfusion (I/R) in rats.Methods Thirty-six healthy adult male Sprague-Dawley rats,weighing 220-250 g,were divided into 3 groups (n=12 each) using a random number table:sham operation (group S),I/R group and hydrogen group (group H).Cerebral ischemia was induced by occlusion of the middle cerebral artery followed by reperfusion in I/R and H groups.In group H,hydrogen-rich saline 5 ml/kg (0.6 mmol/L) was injected intraperitoneally at 3 days before establishment of the model and immediately after the onset of reperfusion.At 24 h of reperfusion,the rats were sacrificed,and hippocampal tissues were obtained for determination of neuroapoptosis (by TUNEL),apoptotic neuron count and expression of activated caspase-3 (by Western blot).The brain tissues in the ischemic area were obtained and stained with haematoxylin and eosin for examination of the pathological changes.Results Compared with group S,the expression of activated caspase-3 was significantly up-regulated,and the apoptotic neuron count was increased in I/R and H groups (P<0.05).Compared with group I/R,the expression of activated caspase-3 was significantly down-regulated,the apoptotic neuron count was decreased (P<0.05),and the pathological changes of brain tissues were significantly reduced in group H.Conclusion The mechanism by which hydrogen inhibits neuroapoptosis during cerebral I/R is probably related to inhibited activation of caspase-3 in brain tissues of rats.

AIM To study the chemical constituents from Buthus martensii Karsch.METHODS The dichloromethane and 70％ methanol fractions of B.martensii extract were isolated and purified by silica,ODS,Sephadex LH-20 and mid-pressure preparative column,then the structures of obtained compounds were identified by physiochemical properties and spectral data.RESULTS Nine compounds were isolated and identified as cholest4-en-3-one (1),cholesterol (2),uracil (3),1-stearyl-2-lyso-sn-glycero-3-phosphatidylcholine (4),glycerol (5),oleic acid (6),proline (7),alanine (8),leucine (9).CONCLUSION Compounds 1,4,5 are isolated from B.martensii for the first time.

Objective To investigate the developmental characters of neural stem cells(NSCs) in occipital of cortex from human fetal brain at different age.Methods Ninety cases of embryoes at gestational age 16-32 weeks and by induction of labor with water bag were collected for determining distribution,shapes,growth modes and the number of NSCs in the occipital of cortex with immunohisto- chemical method under light microscope.Results It was noted that NSCs existed in the occipital of cortex from human fetal brain at different ages.NSCs mainly distributed in layers of cone cells and inner granule cells.NSCs existed in the occipital of cortex of different fetal age included middling round cells,NSCs had enations from 0 to 1.Nucli were larger than plasm.Each NSC had nucleoli from 2-4 and rarefaction chromatin.Most of NSCs distributed in three growth modes including crowd,cluster and clone,occasionally with a single growth mode among other nerve cells.There were no differences including distribution,shapes,growth modes and the number of NSCs in the occipital of cortex between groups,but,NSCs gradually decreased with increasing of age.Conclusion NSCs exists in the occipital of cortex from different gestational age,and the number of NSCs decreases with increasing of age.

ObjectiveTo explore the feasibility and efficacy of hyperbaric oxygen (HBO) therapy combined with mild hypothermi on severe craniocerebral injury (SCI).MethodsAll 80 SCI patients were randomly divided into therapeutic group (52 cases) and control group (28 cases). All patients received general synthesis treatment; while the hyperbaric oxygen combined with mild hypothermia treatment was added to the therapeutic group. Changes of Vm, Vs and PI of middle cerebral artery (MCA) in systolic stage were detected by transcranial-Doppler (TCD) before and after treatment. The plasma level of endothelin (ET) was also tested and prognosis of patients was analyzed.ResultsVm, Vs and PI of MCA in systolic stage improved obviously and ET reduced greatly in therapeutic group compared with those in the control group (P<0.01), and prognosis was also superior to control group.ConclusionHyperbaric oxygen combined with mild hypothermia can improve the consciousness state and prognosis of SCI patients as a result of the relaxation of the cerebral vascular spasm and the reduction of ET, which may contribute to the abatement of the cerebral ischemia and hypoxia.

With the research progress of pathogenesis of JAK gene in myeloproliferative neoplasms (MPN), more tyrosine kinase inhibitors were developed. MPN quantify scoring system is used to determine the efficacy of tyrosine kinase inhibitors for MPN. The choice of tyrosine kinase inhibitors, tyrosine kinase for the relief of MPN symptom burden, etc, become the topics of the 57th American Society of Hematology (ASH) annual meeting.

Objective: To investigate the effect of taurine on learning and memory impairment, cytokines secretion in rats intrahippocampally injected with ?-amyloid (A?) 1-40. Methods: SD rats were randomly divided into control group, A? injected group, taurine (0.3g/kg?d, 0.6g/kg?d) groups. The rats were fed with taurine for 7 days, and then subjected to bilateral intrahippocampus injection of A?1-40 or vehicle. Two weeks later, all rats performed Morris water maze test. The contents of IL-6, TNF-? were checked by way of radio-immunity assay for hippocampus samples. Results: Compared with A?model group, the escape latency and distance were significantly reduced in taurine (0.6g/kg?d) group; the ratio of swimming distance in the target quadrant to that in the whole pool of the probe trial; the content of cytokines of IL-6 and TNF-?in hippocampus were reduced significantly. Conclusion: Taurine can effectively attenuate the cognitive dysfunction caused by A?1-40 in rats. The reduced cytokines content in hippocampus might contribute to this effect.