The attributes of hospital is one of important factors which affect the health service polices and medical practice.the current situation of doctor-patient relationship and frequent doctor-patient dispute was deviate from these attributes.The hospital attributes must return to its nature so as to lessen the contradiction of doctor-patient relationship and decrease the dispute,and use these theories as base to make scientific and rational health polices,and promote the development of our health service.

Objective To investigate the change of serum alpha-L-fucosidase(AFU)and its correlation with the blood glucose and lipid level in small for gestational age(SGA)fetuses. Methods 125 SGA fetuses and 128 fetuses in appropriate for gestational age(AGA)with wet lung were treated in our hospital and were investigated as case control study. The serum of AFU ,blood glucose and lipid were measured and compared within 24 hours after birth in these 2 groups. Results Comparing with the AGA infants ,the SGA babies had lower level of serum AFU,high density lipoprotein,apolipoprotein A and apolipoprotein B(P<0.05). The correlation analysis showed that the serum AFU level has positive correlation with blood glucose,total cholesterol,high density lipoprotein, low density lipoproteinand apolipoprotein A(P < 0.05),while it has negative correlation with serum triglycerides in SGA(P<0.05). Conclusions The SGA infants have lower level of serum AFU and lipid metabolic disorders after birth,and its serum AFU level has correlation with its blood glucose and lipid level.

ObjectiveTo investigate the association between homocysteine and cerebral infarction, as well as between different subtypes of cerebral infarction.Methods105 cases with cerebral infarction were divided into two subgroups, according to TOAST criteria, large-artery disease and small-artery disease.In addition,50 normal persons were selected as control group.Fasting blood samples were drawn from antecubital vein for measurement of plasma total homocysteine,glucose and lipids.Enzyme conversion immunoassay was applied to detect plasma total homocysteine (tHcy) levels.ResultsThe mean tHcy of cerebral infarction, which was (24.85±24.56) μmol/L, was significantly higher than that of control group, which was (16.18±6.97) μmol/L(P<0.05).There was a significant difference of homocysteine between large-artery disease,which was (30.46±31.16) μmol/L, and small-artery disease,which was (18.43±10.73) μmol/L,or the control group(P<0.05),but there was no significant difference between small-artery disease and the control group. ConclusionThe mean tHcy significantly elevated in large-artery disease,which indicated that elevated plasma homocysteine levels is an independent risk factor for atherosclerotic vascular disease.

Objective:To compare the models of guinea pig allergic rhinitis induced by different allergens. Methods: Ovalbumin (OVA), 2,4-tolylene diisocyanate (TDI) and alternariaalternata was respectively used as the allergens to establish the model of guinea pigs allergic rhinitis. The conformity of the models and human allergic rhinitis was studied through the behavioral indices, such as the times of nose itches, nasal discharge flow, histological properties and serum HA and IgE indices. Results:The times of sneezing and scratching nose, serum HA and IgE in OVA group was significantly different from those in the control group (P<0. 001 or P<0. 01). Conclusion:The models of allergic rhinitis induced by OVA are the same as allergic rhinitis in typical symptoms and pathological changes.

Objective To study the pro-invasive effect of irradiation on human glioblastoma cell line U87 and its possible mechanism.Methods Cultured U87 cells received different doses of irradiation (0,2,and 4 Gy).The change in cellular invasiveness was measured using the real-time cell analyzer system.The activities of matrix metalloproteinase-2 (MMP2) and matrix metalloproteinase-9 (MMP9) in U87 ceils were measured by gelatin zymography before and after irradiation.The content and distribution of intracellular β-catenin after irradiation were determined by immunohistochemistry.The mRNA levels of Wnt/β-catenin target genes were measured by real-time quantitative PCR.Results After irradiation,the invasiveness of U87 cells increased significantly (P ＜ 0.01),which was dose-dependent within a certain dose range; the activities of MMP2 and MMP9 in U87 cells increased significantly (P =0.031 for MMP2 ; P =0.004 for MMP9) ;the content of β-catenin in U87 cells increased significantly (P ＜ 0.01),with translocation from the cell membrane and adherens junctions to the nucleus; the mRNA levels of Wnt/β-catenin-related genes (FZD7 and TCF1) increased significantly (P ＜ 0.01),and the transcription of Wnt/β-catenin target genes,especially those related to migration and invasion such as MMP2,MMP7,MMP9,and CD44,was significantly enhanced (P ＜ 0.05).Conclusions Irradiation can promote the invasion of glioblastoma U87 cells,possibly by activating the Wnt/β-catenin pathway and enhancing the transcription of migration-and invasion-related genes.

Background Cataract phacoemulsification combined with intraocular lens (IOL) implantation is a primary treatment for cataract.However,tear film stability and ocular surface structure are affected after surgery,especially some cataract patients with diabetes.Researches determined that tear film dysfunction is an important causative factor of dry eye.Objective This study was to investigate the change of tear film after phacoemulsification in cataract patient with diabetes.Methods A non-randomized cases-controlled study was designed.Thirty-six cataract patients with diabetes (54 eyes)and matched 32 patients (40 eyes)with age-related cataract were included in this study in Tianjin First Center Hospital from October,2010 to May,2011.Phacoemulsification and IOL implantation was performed on the all patients with the same topical eyedrops in both groups.Dry eye-related symptom was surveyed and scored by questionnaire,and tear film break-up time (BUT),Schirmer Ⅰ test(S Ⅰ t)and corneal fluorescein(FL) were examined 3 days before operation and 1 day,1 week,1month,3 months after operation.Written informed consent was obtained from each patient before entering this trial.Results The percentage with preoperative symptoms of dry eye was 36.2％ and postoperative dry eye symptoms accounted for 75.8％.Significant differences were seen in dry eye symptom score,FL score,BUT value and S Ⅰ t value between the diabetic cataract group and only cataract group as well as among 4 time points(dry eye symptom score:Fgroup =139.347,P =0.000 ; Ftime =342.741,P =0.000 ; FL score: Fgroup =14.073,P =0.000 ; Ftime =332.697,P =0.000 ; BUT value: Fgroup =28.198,P =0.000 ; Ftime =868.364,P =0.000 ; S Ⅰ t value: Fgroup =2.848,P =0.095 ; Ftime =564.017,P=0.000).FL scores of 2 groups were significantly higher in postoperation than those in preoperation (P＜0.05),and those of diabetic cataract group were significantly higher than only cataract group(P＜0.05),but no significant difference was found between postoperation 3 months and preoperation (P＞0.05).BUT was shorter in postoperation than that in preoperation in the diabetic cataract group(P＜0.05).S Ⅰ t values in postoperative 1 day and 1 week were significantly lower than in preoperation in both groups(P＜0.05).However,S Ⅰ t values returned to normal from 1 month through 3 months in both groups(P＞0.05).Conclusions Tear film dysfunction occurs after operationin cataract patient with type 2 diabetes.It is thought that cataract patient with diabetes is susceptible population of dry eye.Dry eye appears more early and severer in diabetes patients after phacoemulsification combined with IOL implantation.

BACKGROUND:Studies have indicated that melatonin can promote the differentiation of adipose-derived stem cels into neurons, and the effect of melatonin on the osteoblasts form adipose-derived stem cels is rarely reported.
OBJECTIVE:To observe the osteogenic differentiation of adipose-derived stem cels and the effect of melatonin on the bio-viability of differentiated cels.
METHODS:(1) Adipose-derived stem cels were isolated and purified from the inguinal fat of Kunming mice by type I colagenase digestion and differential adhesion method, respectively. Immunohistochemical staining of CD44 was used as a quality control. (2) Osteogenic induction medium was added to induce osteogenic differentiation of passage 2 adipose-derived stem cels. Alkaline phosphatase staining and von Kossa method were combined to evaluate differentiation condition. (3) Melatonin at variable concentrations was added to treat mature osteocytes originated from adipose-derived stem cels and MTT was applied to determine their viability at 24 and 48 hours after culture respectively to find out optimal condition of melatonin treatment. (4) Melatonin at the optimal concentration was used to treat differentiated cels and detect alkaline phosphatase activity after 3 days and 6 days respectively.
RESULTS AND CONCLUSION: (1) After seeding for 48 hours, most cels were adherent, and after 4 days, the cels displayed multiple shapes and colonies of different sizes formed. After subculture, cel morphology homogenized as spindle shape. Cels positive for CD44 were brownish yelow, and localized mainly on the cel membrane. (2) Differentiated cels were positive for von Kossa staining and black sediments scattered in the extracelular matrix. Alkaline phosphatase expressed positively, and brown-black particles, appeared within cels. (3) Melatonin supplement improved the viability of differentiated cels; and 1, 10 and 100 μmol/L was observed as the optimal concentrations both at 24 and 48 hours. (4) The intracelular alkaline phosphatatse activity was increased with time in al the groups (P < 0.05). Compared with the blank group, the intracelular alkaline phosphatase activity in Melatonin groups (1, 10 and 100 μmol/L) had nochanges at 3 days, but significantly increased at 6 days (P < 0.05). These findings indicate that melatonin can enhance the proliferation of osteocytes differentiated from adipose-derived stem cels, and improve the activity of intracelular alkaline phosphatase.

Humans ; Scopolamine ; Phenobarbital ; Suicide

Objective To investigate the expression of SOX4 and C/EBPα mRNA in chronic myeloid leukemia (CML) and their clinical significances. Methods Bone marrow samples from 68 cases of CML including 57 newly diagnosed patients and 11 patients treated with imatinib were collected, and peripheral blood mononuclear cells from 30 healthy people were collected as healthy control. The expression of SOX4 and C/EBPαmRNA and protein levels were detected by RT-PCR and Western blot, respectively. The relations between the expression of SOX4 and C/EBPα and the influences of imatinib on SOX4 and C/EBPα were analyzed. Results The expression level of SOX4 mRNA was increased in newly diagnosed CML patients compared with that of normal control group (6.545 5±1.495 2 vs. 0.059 6±0.018 8, t=3.139, P=0.002 3), but the expression level of C/EBPαmRNA was significantly decreased (0.238 8±0.033 8 vs. 0.810 5±0.056 2, t=9.240, P<0.000 1). The expression levels of SOX4 and C/EBPαmRNA had no significant correlation with age, gender, white blood cell count (WBC) and bcr-abl of newly diagnosed patients (all P>0.05). The expression level of SOX4 mRNA in 5 patients treated with imatinib was decreased (0.120 6 ±0.044 9 vs. 0.557 9±0.144 8, t=2.885, P=0.020 4), and the expression level of C/EBPαmRNA was increased (0.330 3±0.042 4 vs. 0.150 5±0.046 5, t=2.855, P=0.021 3). The expression level of SOX4 mRNA in 6 patients who developed blast phase during the treatment of imatinib was increased (0.469 9±0.123 0 vs. 0.050 2±0.036 6, t=2.370, P=0.039 3), and the expression level of C/EBPα mRNA was decreased (0.197 9 ±0.064 7 vs. 0.378 7±0.042 9, t=2.327, P=0.042 3). The expression of SOX4 mRNA was negatively correlated with C/EBPα mRNA (t=-0.554 6, P=0.002 8). Conclusions In newly diagnosed CML, the expression level of SOX4 is increased, C/EBPα is decreased compared with that of healthy control, and both have negative correlation. In the patients in blast phase after imatinib treatment, SOX4 gene is up-regulated, and C/EBPα is down-regulated. C/EBPα-SOX4 axis may play a role in the occurrence and development of CML. SOX4 may be a new molecular target for the treatment of CML.

Objective:To investigate the preventive and protective effects of Schisandrin B in the mice of Alzheimer's disease (AD),and to clarify its mechanism.Methods:Fifty Balb/c mice were randomly divided into blank group,model group,pasitive control group,low dose of Schisandrin B group(0.1 g·kg-1)and high dose of Schisandrin B group(0.5 g·kg-1);there were 10 mice in each group.Step-through test was conducted after last administration to detect the latencies and number of errors of the mice in various groups,and the brain tissue was taken.Congo red staining was to detect the morphology changes of cells and neuronal amyloidosis in brain tissue of the mice.The levels of ROS in brain tissue of the mice were tested by Flow Cytometry.The contents of MDA,the levels of LDH,and the activities of CAT,GSH-Px and SOD in brain tissue of the mice were tested by biochemical method.Western blotting method was used to detect the expression levels of signaling pathway proteins Nrf2 and Keap1 in brain tissue of the mice.Results:Compared with model group,the latencies of the mice in low and high dose of Schisandrin B groups were increased (P<0.01) and the number of errors in step-through tests was decreased (P<0.05 or P<0.01).The Congo red staining results showed that compared with model group,the neuronal amyloidosis in brain tissue of the mice in Schisandrin B groups was decreased significantly.Compared with model group,the levels of ROS,LDH and the contents of MDA in brain tissue of the mice in low and high doses of Schisandrin B groups were decreased (P<0.05 or P<0.01),and the activities of CAT,SOD and GSH-Px were increased (P<0.01).Compared with low dose of Schisandrin B group,the content of MDA and the activities of SOD and GSH-Px in brain tissue of the mice in high dose of Schisandrin B group were increased (P<0.001).Compared with model group,the expression level of Nrf2 protein in brain tissue of the mice in low dose of Schisandrin B group was increased (P<0.01),while the expression level of Nrf2 protein in brain tissue of the mice in high dose of Schisandrin B group was decreased (P<0.01);the expression levels of Keap1 protein in brain tissue of the mice in low and high doses of Schisandrin B groups was decreased (P<0.01).Conclusion:Schisandrin B could decrease the level of peroxidation in brain tissue of the mice and reduce the oxidative damage and improve the memory function of the AD mice.The mechanism is related to the activation of Nrf2 signaling pathway which improve the activity of antioxidant enzymes.