BACKGROUND: Hematogenesis of a body mainly depends on the proliferation of hematopoietic progenitor cell (HPC). Hematopoietic functional impairment will occur when hematopoietic cells are injured by radioactive ray or chemical drug. The proliferation of HPC is the key link of promoting hematogenesis.OBJECTIVE: To study the effects of nine monomers extracted from Spatholobus suberectus Dunn (SSD) on proliferation of HPC in marrow-depressed mice. DESIGN: Randomized controlled trial.SETTING: Department of Pharmacy, General Hospital of Chinese PLA.MATERIALS: This experiment was conducted in the Department of Clinical Pharmacology, General Hospital of Chinese PLA from November 2002 to February 2003. Totally 348 healthy Kunming mice, weighing 22-25g, clean grade, of irrespective gender, were selected in this study (certification: SCXK-2001-001). The animal experiment was approved by the local ethics committee. SSD was provided by Dispensary of Traditional Chinese Medicine, General Hospital of Chinese PLA; monomers (gallocatechin, formononetin, catechin, pyromucic acid, syringic acid, Demethylvestitol, 1,3,5-benzenetriol, ononin, and epicatechin) were extracted from SSD acetoacetate; TGL-16 centrifuger was made in Shanghai 6th Medical Equipment Factory; CO2 incubator was made in SANYO Company, Japan; MK inverted microscope was provided by OLYMPUS Company, Japan.METHODS: Experimental grouping: Mice were randomly divided into 29 groups, including normal group; control group; gallocatechin high-, medium-, low-dose groups; formononetin high-, medium-, low-dose groups; catechin high-, medium-, low-dose groups; pyromucic acid high-, medium-, low-dose groups; syringic acid high-, medium-, low-dose groups; Demethylvestitol high-, medium-, low-dose groups; 1,3,5-benzenetriol high-, medium-, low-dose groups; ononin high-, medium-, low-dose groups; epicatechin high-, medium-, low-dose groups with 12 mice in each group. Experimental intervention: All the mice except the mice in normal group had been given total body sublethal dose of irradiation by 60Co γ-ray (215.3 rontgen/min, 4 Gy dose rate, irradiation time of 107.5 seconds). Normal saline was injected intraperitoneally into 8 mice in normal group and control group at the third day after inadiation. Stored solution 2,0.4,0.08g/L of each monomer was intraperitoneally injected into the mice in each monomer high-, medium-, low-dose groups, respectively, at the third day after irradiation. Experimental evaluation: Thirty minutes after administration, blood of 8 mice in normal, control group and 12 mice in other groups was collected and normal, control and each dose monomer-containing serums were obtained after centrifugation for 15 minutes, filtering through 0.45μm filter membrane. Then 4 mice in normal and control group were killed to study the effects of nine monomers on proliferation of HPC in marrow-depressed mice by counting erythrocyte colony-forming unit (CFU-E), burst-forming uniterythroid (BFU-E), granulocyte-macrophage colony-forming unit (CFU-GM), and megakaryocyte colony-forming unit (CFU-Meg).MAIN OUTCOME MEASURES: CFU-GM, CFU-E, BFU-E, and CFU-Meg in each group. RESULTS: Totally 348 mice were included in the final analysis. CFU-E: The quantity of CFU-E in high-dose of catechin, gallocatechin, syningic acid, and epicatechin groups was significantly higher than that in the control group (P<0.05-0.01) while the quantity of CFU-E in medium-and low-dose of catechin and medium-dose of gallocatechin was also significantly higher than that in the control group (P<0.05). CFU-GM: Except pyromucic acid and ononin groups, the amount of CFU-GM in other groups was significantly higher than that in the control group (P<0.01). BFU-E: Compared with control group, the amount of BFU-E remarkably increased under the effect of each dose of catechin, gallocatechin, syringic acid and high-, medium-dose of epicatechin (P<0.05). CFU-Meg: The amount of CFU-Meg in high-, low-dose syringic acid groups, low-dose gallocatechin groups and each dose group of catechin and epicatechin was significantly higher than that in the control group (P<0.05). Amount of all colonies in the control group was significantly lower than that in the normal group (P<0.01). CONCLUSION: Nine monomers extracted from SSD can promote the proliferation of HPC in bone marrow depressed mice. In particular, the activity of catechin to stimulate proliferation is the strongest.

Aim To study effects of nine compounds extracted from Spatholobus suberectus Dunn (SSD) on proliferation of hematopoietic progenitor cell (HPC) in marrow-depressed mice. Methods Serum pharmacology experiment was used to observe the influence of nine compounds on growth of CFU-E、BFU-E、CFU-GM、CFU-Meg in marrow-depressed mice. Results Compared with the control, all compounds except pyromucic acid and ononin could significantly stimulate the growth of CFU-GM (P

Objective To investigate the effect of emphysema and intermittent hypoxia (IH) on the hepatic oxidative stress and inflammatory injury in rats. Methods Sixty male Wistar rats were randomly assigned to 4 groups, control group (A), emphysema group (B), IH group (C) and emphysema+IH group (D). Group A was normally fed. Group B was exposed to smoke, 30 min per time, twice everyday. Group C was exposed to 5%O2 30 s/Air 90 s for 8 h/d. Group D was exposed to smoke twice, about 30 min each time, and exposed 5%O2 30 s/Air 90 s for 8 h/d. After continues exposure for 8 weeks, five rats in each group were randomly selected for arterial blood gas analysis. The tissue blocks of liver was obtained for pathologi-cal scoring and measurements of liver oxidative stress in the rest 10 rats of each group. HE staining was used to calculate the mean lining interval (MLI) and mean alveolar number (MAN). The hepatic inflammatory factor interleukin-6 (IL-6), tumor necrosis factor-α(TNF-α), superoxide dismutase (SOD) activity, catalase (CAT) activity and malondialdehyde (MDA) con-centration were measured in four groups. Results Characteristics of emphysema were found in group B and group D. The values of MLI were significantly higher in Group B and group D than those of group A and group C (P<0.05). The values of MAN were significantly lower in group B and group D than those of group A and group C (P<0.05). The levels of SOD and CAT were significantly lower in group B, group C and group D than those of group A (P<0.05). And the levels of SOD and CAT were significantly lower in group D than those of group B and group C (P<0.05). The values of liver MDA were signifi-cantly higher in group B, group C and group D than those of group A, and the values were significantly higher in group D than those of group B and group C (P<0.05). The liver histological scores and the levels of IL-6 and TNF-αwere signifi-cantly higher in group B, group C and group D than those of group A, and the values were significantly higher in group D than those of group B and group C (P<0.05). Conclusion Emphysema and IH have synergistic action in causing hepatic oxidative stress and inflammation.

Objective To evaluate the effects of strict dietary salt restriction on blood pressure and proteinuria in chronic glomerulonephritis (CGN) patients. Methods From October 2007 to April 2009, 32 CGN inpatients were enrolled. Among them, 15 patients followed a strict dietary salt restriction menu (sodium 100 mmol/d, potassium 50 mmol/d, protein (0. 8-1. 0) g · kg~(-1) · d~(-1) , calorie (105-125) KJ · kg~(-1) · d~(-1) ) for 7 days, while the other 17 patients were fed freely offered by hospital as controls. 24 h urinary sodium excretion (24h-UNa) was used to monitor the salt intake. No changes of drug therapy were made during the study. Blood pressure was monitored every day. 24-hour urinary protein and serum biochemical parameter were measured before and after the study. Results There was no significant difference of baseline 24h-UNa between the two groups [(135.1 ±50.4) mmol/d vs (137.4 ±28.6) mmol/d) ]. During the study, the average 24h-UNa of patients with strict dietary intervention was (97. 2 ± 8.6) mmol/d. Both SBP [ (117. 7 ± 10. 0) mm Hg( 1 mm Hg=0. 133 kPa) vs (106.2 ±9.9) mm Hg] and DBP [ (76. 3 ± 6. 1 ) mm Hg vs (67. 5 ± 5. 5 ) mm Hg] decreased significantly ( P < 0. 001 ) . Proteinuria decreased significantly too [ 1. 57 (0. 3-3. 0) g/d vs 0. 57 (0. 16-2. 72) g/d,P = 0. 006]. The reduction of SBP was positively correlated with the reduction of 24h-UNa (r =0. 572, P =0. 026) , while the reduction of proteinuria correlated with both the reduction of SBP (r = 0. 568, P = 0. 027) and 24h-UNa (r =0. 525, P =0. 044). In the control group, only SBP decreased significantly [ ( 122. 6 ± 15. 5) mm Hg vs (115.8 ±10.4) mm Hg, P = 0.02] without significant changes of DBP and proteinuria When comparing the subgroups who took ACEI/ARB from both groups, the reduction of proteinuria wasmore prominent of those from the study group than the control group [ - 0. 4 ( -0. 95-0. 07) vs 0. 07 ( - 0. 39-0. 42), P = 0. 014 ]. Conclusion Strict dietary salt restriction is effective in reducing blood pressure and proteinuria in CGN patients.

Objective To measure the mRNA expression of immediate-early gene c-fos in endothelial cells by the use of different intermittent hypoxia (IH) protocols. Methods A gas control delivery system was homemade, which pro-duced IH/re-oxygenation(ROX) environmental exposure. The endothelial cells were exposed to IH/ROX cycles, and were di-vided into three groups (A, B and C). There were five sub-groups in each group. Group A included intermittent normoxia group, standard incubator control group, continuous hypoxia group (CH), 1.5%O2 IH group and 10%O2 IH group. There were different frequency IH of 1.5%O2 and 10%O2 sub-groups in group B and group C. Hypoxia time was 15 s. The intermittent hypoxia cycle was 60 and the ROX time was different. The total cycle time was different, including 1.5 h group, 3 h group, 5 h group, 6.5 h group and 9.5 h group. The mRNA expression of immediate-early gene c-fos was measured by real-time PCR. Results There was no significant difference in the level of c-fos mRNA between intermittent normoxia group and CH group. The expression of c-fos mRNA was significantly higher in 1.5%O2 IH group and 10%O2 IH group than that of intermit-tent normoxia group, and there was a higher expression level of c-fos mRNA in 1.5%O2 IH group than that of 10%O2 IH group (P＜0.01). It was found that the mRNA expression of c-fos increased gradually at first, and then gradually decreased. The expression of c-fos mRNA was significantly higher in 5 h group than that of other groups (P＜0.01). Conclusion The mRNA expression of immediate-early gene c-fos is increased after exposing to IH/ROX in endothelial cells, which is closely related with IH extents and frequencies.

Objective To investigate the effects of dexmedetomidine continuous intravenous infusion on the hemodynamic response of ephedrine and the recovery process of patients undergoing neck surgery under general anesthesia.Methods Select elective fitting line surgery under general anesthesia of 100 patients with cervical disease from January 2015 to December 2015 in the First People's Hospital of Yongkang,randomly divided into low dose group and high dose group, 50 cases in each group, before induction of anesthesia, patients received continuous intravenous pumping of dexmedetomidine 0.4μg/kg in low dose group or 0.8μg/kg in high dose group,after ten mins 0.4μg/kg prior to anesthesia induction,until the end of operation withdrawal;5 min after laryngeal mask insertion, ephedrine 0.1 mg/kg were intravenous administered in two groups.Observe the following indicators:the after entering the operation room ( T0 ) , anesthesia before induction ( T1 ) , after induction ( T2 ) , administration of ephedrine ( T3 ) , the maximum value time(TBP,THR) of heart rate and blood pressure in 10 minutes.Increased of HR,SBP,DBP,recovery related indicators.Results HR, SBP and DBP levels compared no significant difference of T0 with two groups,T1, T2 and T3,HR,SBP, DBP were lower than T0 with two groups(P<0.05),high dose group were lower than low dose group of HR, SBP, DBP(P <0.05);TBP and THR no significant difference of two groups,high dose group were higher than low dose group of Increased of HR,SBP,DBP(P<0.05);high dose group were lower than low dose group of after extubation cough score and sedation agitation score(P<0.05).Spontaneous breathing recovery time and extubation time, called the open time, orientation recovery time,the difference between the two groups was not statistically significant.Conclusion 0.8μg/kg dexmedetomidine continuous intravenous injection of ephedrine in patients with neck pressor effect stronger than the 0.4μg/kg,0.8μg/kg compared with 0.4μg/kg can reduce the recovery period of cough and restlessness,different doses had no effect on recovery.

Abstract: Objective To analyze the absenteeism of medical staff in tertiary hospital and its relationship with psychological Methods capital. A total of 462 medical staff from a tertiary hospital in Jinan City were selected as the research subjects by convenience sampling method. The Stanford Presenteeism Scale and Psychological Capital Scale were used to investigate the Results - （ - ） absenteeism and psychological capital. The median and the 0th 100th percentile of score was 16 6 29 in （ - ） absenteeismandwas95 20 120 inpsychologicalcapitalintheresearchsubjects.Thetotalscoreofpsychologicalcapitalwas（，P<） negatively correlated with the total score of absenteeism partial correlation coefficient was −0.34 0.01 . The results of ， multiplelinearregressionanalysisshowedthatthehigherthelevelofpsychologicalcapital thelowertheriskofabsenteeism （P< ）， ， ， ， ， 0.01 after adjusting for confounding factors such as gender age education level professional title department and Conclusion lengthofservice. Theabsenteeismofmedicalstaffintertiaryhospitalwasnegativelycorrelatedwithpsychological capitallevel.Measuresshouldbetakentoimprovethepsychologicalcapitalofmedicalstafftocontroltheoccurrenceofhidden absenteeism.

Objective To evaluate the relationship between stenosis of intra- or extra-cranial cerebral large artery and capsular warning syndrome(CWS). Methods Eleven consecutive CWS patients hospitalized during period of time from November 2008 to December 2009 were retrospectively analyzed.Result In these 11 patients with CWS, 5 patients had motor symptoms only, 4 patients had pure sensory symptoms, and 2 patients had sensorimotor symptoms. Ten patients underwent cervical contrast-enhanced MRA and intracranial MRA examination. The results showed no sign of arterial stenosis. Seven CWS patients eventually had strokes, 1 progressed to stroke despite receiving the therapy of antiplatelet and anticoagulation. All stroke lesions were located in the capsula interna. All the CWS patients had vascular risks: 7 were smoker, 8 had hypertension, 1 had diabetes mellitus, and 5 had hyperlipidemia. One patient had a history of previous stroke; no patient had a history of ischemic heart disease or atrial fibrillation. At follow-up(10. 2 ±3.4)mouths, the average modified Rankin scale score for all patients was 0. 73 ± 1.20.Conclusion CWS was not associated with stenosis of the intra and extra-cranial large cerebral arteries.CWS may be associated with small-vessel single-penetrator disease.

Objective: To optimize the enzymatic digestion conditions of trypsin, so as to improve the testing capacity of mass spectrometry for shrimp allergens. Methods: The enzymatic digestion test was carried out by response surface methodology for optimizing pH, temperature and time. After enzymatic hydrolysis, the peptides were separated by chromatography and determined by high-resolution mass spectrometry with Q-orbitrap. The allergen protein was identified and quantified by UniProt database and MaxQuant software. Results: Two allergen proteins, tropomyosin and arginine kinase, were isolated from shrimp, and their intensities ranged from 100.2×106 to 436.5×106. Response surface analysis showed that when the digestion time was 4.29 hours, the temperature was 44.15 ℃ and pH value was 6.55, the maximal intensity of the allergen proteins was 457.48×106. The experiment was validated with the digestion time of 4.2 h, pH value of 6.5, and temperature of 44 ℃, then resulted in the average intensity of 448.1×106. The deviation from the predicted value was 2.1%. Conclusions The conditions of enzymatic digestion can be optimized by response surface methodology. The enzyme may have the best performance with the pH value of 6.5, temperature of 44 ℃ and digestion time of 4.2 hours.

Multiple medications can increase the risk of adverse drug reactions and adverse events in the elderly.Simplification of multiple medications is a systematic process of weighing the benefits and harms of drug use under the supervision of medical personnel, combining the patient's medical condition, current clinical status and personal preferences and tapering or stopping certain drugs while ensuring efficacy.Simplification of multiple prescription drugs can reduce falls, shorten the lengths of hospitalization, and reduce emergency visits for patients.This article gives a brief overview of simplification of multiple prescription drugs for the elderly and introduces the current available tools to do so.