Objective To observe the effect of buprenorphine transdermal patch combined with gabapentin in patients with diabetic peripheral neuralgia (DPN).Methods Sixty patients were divided randomly into experimental (A) and control (B) groups.Patients in group A were treated with buprenorphine transdermal patch combined gabapentin.Patients in group B were orally administered pregabalin only.The period of treatment was 8 weeks.The analgesic effect [visual analogue scale (VAS) scores] , sleep scores, daily doses of gabapentin, and adverse reactions were evaluated before treatment, and the 2nd weeks, 4th weeks and 8th weeks after treatment.Results The VAS scores of group A were significantly lower than group B at 4th weeks and 8th weeks after treatment [(2.8 ± 1.6) points vs (3.8 ± 1.5) points,(2.6 ± 0.5) points vs (3.5 ± 1.6) points, P ＜ 0.05].The sleep scores of group A were significantly higher than group B (P ＜ 0.01).The daily doses of gabapentin were significantly lower [(853.0 ± 349.8) mg vs (1575.8 ± 351.0) mg, (845.1 ± 342.7) mg vs (1434.2 ± 440.8) mg, (826.9 ± 298.5) mg vs (1389.8 ±356.6)mg, P ＜ 0.05].The incidence of adverse reactions was significantly lower in group A (10.7％ vs 25.9％ , 10.7％ vs 29.6％ , P ＜ 0.05).Conclusions The combination of buprenorphine transdermal patch and gabapentin is effective and safe for the patients with DPN.

Objective To establish a murine model of haploidentical peripheral blood transplantation and evaluate the characteristics of hematopoietic and immunological recovery. Methods BDF1 recipient mice conditioned with high dose total body irradiation were transplanted with neonatal peripheral blood from DBA/2 mice through tail vein.Hematopoietic recovery and graft-versus-host disease(GVHD) were observed,and the engraftment level of neutrophils and T cells were further detected by double-color flow cytometry. Results After transplantation,the levels of white blood cell(WBC),platelet(PLT) and haemoglobin(Hb) were increased significantly on day 18,21 and 18,respectively.WBC and PLT recovered within normal range on day 29 and 36,respectively,while Hb had just been partially retrieved until day 50.Long term survival was achieved in 90% of the recipient mice,and there was no evidence of GVHD.It was revealed by flow cytometry on day 50 that the proportion of donor cells in nucleated cells of recipient peripheral blood was 88.1%,including 33.92% donor neutrophils and 16.83% donor T cells. Conclusion Each newborn peripheral blood unit yields enough progenitor cells to recover the hematopoietic and immunologic system in haploidentical mice without causing GVHD.The close to full donor type chimerism was achieved,and the neutrophil was totally engrafted.

OBJECTIVE:To prepare Xiaoyanzhiyang lotion,conduct determinations of the preparation and observe its clinical,therapeutic effects.METHODS:It was prepared into pulveres as per the compositions of the formula,determined on its physicochemical properties and identified with TLC.108 patients with typical dermatitis and eczema were randomized into the treatment group(65 cases)and the control group(43 cases).The treatment group was given Xiaoyanzhiyang lotion,2～ 3 times? d-1,and the control group was treated with Kenacomb ointment,2～ 3 times? d-1,each for a treatment course of 1wk.RESULTS:The overall effective rates for the treatment group and the control group were 98.5% and 88.4% respectively,with the former having significantly higher rate than the latter(P

Objective: To study the clonal characteristics of peripheral T cells and anti tumor immunology in the patients with colorectal cancer by analyzing T cell receptor beta (TCR?) gene repertoire and complementarity determining regions 3 (CDR3) amino acid sequence of the peripheral blood cells (PBL). Methods:The 24 TCR?V genes from PBL in pre operation and post operation and colorectal cancer tissues, were amplified by the method of combined reverse transcriptase polymerase chain reaction (RT-PCR) with denaturation polyacrylamide sequencing gel eletrophoresis, which is called TCR? gene repertoire. In order to analyze the clonality of the over expressing bands and the CDR3 sequence, the PCR production was sequenced directly. Results: TCR? gene repertoire of PBL in the tumor bearing patients was clonally expressed, which indicated that there were monoclonal or oligoclonal expansion of T lymphocytes. Some of the clonal T cells in PBL had the same CDR3 amino acid sequence motifs with the clonal T cells in the tumor infiltrating lymphocyte(TIL). The patients with clonal expansion of T cells in PBL had lymph node metastases, but there was no recurrence within 10 months after operation. Conclusion: There is oligoclonal proliferation of T cells in the blood of tumor bearing patients. It is possible that the clonal T lymphocytes are the tumor associated antigen specific anti tumor T lymphocytes.

Objective To evaluate the relationship between birth weight and nonalcoholic fatty liver diseases (NAFLD) in Chinese primary school students. Methods A cross-section study was conducted in ifve elementary schools in Gao Hang Town, Shanghai and 2163 students were enrolled in the study (1120 boys/1043 girls). Height, body weight, waist circumference and per-cent of body fat (bioelectrical impedance analysis) were measured by professional nutritionist after training. Birth weight, feeding pattern, height and body weight of parents were obtained by a self-completed questionnaire. NAFLD was diagnosed by ultra-sound. The risk factors of NAFLD were analyzed. Results The prevalence of NAFLD in the study population was 8.9%. The prevalence of NAFLD was signiifcantly higher in boys than that in girls (12.5%vs 5.0%, P<0.01). Logistic regression showed that sex (OR=1.97, 95%CI:1.21-3.21) and percent of body fat (OR=1.12, 95%CI:1.07-1.17) were the risk factors of NAFLD, and normal BMI was the protective factor of NAFLD (OR=0.09, 95%CI:0.04-0.19) in the study population. Conclusions The pre-valence of NAFLD is higher in boys than that in girls. Also overweight, and high percent of body fat are risk factors of NAFLD in children.

Objective To study the change and rule of immunological function among the patients with coal arsenic poisoning in order to provide a basis for tumor risk evaluation and monitoring.Methods Seventy patients with coal arsenic poisoning aged from 24 to 71 years old(44 men,26 women,averaging 41 years old)were divided into 4 groups including 23 cases having a course less than 10 years,21 case8 lasting for 10～19 years,20 cages for more than 20 years,6 cases of cancer,and 26 healthy normal controls.Flow cytometer(FCM)was used to analyze the frequency of CD3+(total T cell),CD3+CD4+(inducer/helper T cell),CD3+CD8+(suppressor/cytotoxic T cell),CD19+(B lymphocyte),and CD56+CD16+(natural killer cell)lymphocyte subsets in the peripheral blood of the subjects and the expression rates of lymphocytic membrane surface molecules of human leucocvte antigen (HLA)-DR,CD25,CD38 were also determined by FCM.Results The pmportions of CD3+cells in periDheral blood of less than 10 years,10～19 years,more than 20 years and cancer groups were (63.76±9.32)%。(55.63± 12.97)%,(51.00±12.23)%and(49.83±,9.89)%respectively,which were significantly lower than that in control group[(68.10±8.62)%],and there was a significant difference between different groups(F=12.862,P<0.05). In less than 10 years,10～19 years,more than 20 years and cancer groups,the proportion of CD3+CD4+cells cells was (31.35±6.62)%,(28.38±8,66)%,(24.13±6.46)%and(19.17±4.96)%respectively,which wag significantly lowerthan that in control group[(34.28±7.32)%],and significant in a-group difference was found(F=10.455, P<0.05).The percentages of CD19+cells in more than 20 yeats and cancer groups[(9.00±5.32)%,(9.00± 3.29)%]were lower than that in control group and less than 10 years group[(11.80±3.43)%,(12.35±4.53)%] (P<0.05),while no statistical difference was found between other groups.The expression rates of CD25 and CD38 in lymphocytes of cancer group[(17.96 ±4.98)%,(41.38±8.54)%]were obviously higher than those in control group[(13.10±338)%,(28.60±5.51)%]and there were statistical differences between the experimental groups(P<0.05).The expression rate of HLA-DR in 10～19 years groups[(18.20±6.25)%]was significantly higher than that in control group[(10.72±7.06)%]and less than 10 years group[(11.78±5.13)%],while it was the same in more than 20 years and cancer group[(20.30±8.01)%,(21.82±10.97)%].Conclusions Reduction of cellular immune function caused by coal arsenic poisoning may be an important mechanism of skin cancer.CelMar immune function may be used as a warning signal of skin cancerization of patients with coal arsenic poisoning.

BACKGROUND: As is well known that hematopoietic stem and progenitor cells (HSPCs) contain in bone marrow, peripheral blood, and cord blood. Recent studies found that human placenta tissue (PT) also exists in HSPCs. But so far the property and differentiation capacity of human PT-HSPCs is not yet known. Furthermore the composition of lymphocyte subpopulations and immunogenicity regarded to human PT-HSPCs are also unclear.OBJECTIVE: To verify whether there are more HSPCs in human PT than those in human umbilical cord blood (UCB), to investigate their capacities of proliferation and differentiation, and to analyze the phenotypes of lymphocyte subpopulations in human PT.DESIGN, TIME AND SETTING: Open eXperiments were performed at the Key Laboratory of Cell Engineering of Guizhou Provinee from January 2004 to December 2006.SETTING: Key Laboratory of Cell Engineering of Guizhou Province, the Affiliated Hospital of Zunyi Medical College.MATERIALS: Twelve human placenta and UCB samples through cesarean delivery were collected aseptically with the informed consents of parturients derived from Maternity Department of the Affiliated Hospital of Zunyi Medical College. The main reagents were detailed as follows: lymphocyte subpopulations analysis reagents Simultest IMK-lymphocyte Kit, CD34 absolute counting reagents Kit (Becton Dickinson); CD34 Multisort Kit, FITC conjugated CD38 monoclonal antibody, anti-FITC microbeads and MS/LS mini MACS segregating, columns (Miltenyi Biotec).METHODS: UCB samples were 1:1 diluted with RPMI-1640 containing 0.1 volume fraction of fetal bovine serum and the mononuclear cells (MNCs) were isolated on Ficoll-Histopaque by centrifugation for 30 minutes. The MNCs at the interface were collected and washed with PBS. Single cells suspension liquid of human PT was prepared by mechanical method combined with 0.25g/L collagenase digestion. After that, the placenta samples underwent the same protocol as used in UCB to isolate MNCs. The percentage of CD34+CD38-, CD34+CD38+ HSPCs and the phenotype of lymphocyte subpopulations derived from human PT-MNCs were analyzed by flow cytometry (FCM). CD34+CD38-, CD34+CD38- cell subsets isolated by magnetic-activated cell sorting (MACS) from human PT were used to carry out colony-forming culture including granulocyte/macrophage colony-forming unit (CFU-GM), burst forming unit-erythroid (BFU-E) and mixed colony-forming unit (CFU-Mix) in order to assess their capacities of hematopoietic progenitor cells' proliferation and differentiation. In parallel, UCB samples underwent the same protocols for comparison.MAIN 0UTCOME MEASURES: Percent compositions of CD34+ HSPCs, hematopoietic progenitors' lineage colony-forming capacities of CD34+ HSPCs, phenotypes and compositions of lymphocyte subpopulations both in PT and UCB.RESULTS: The percentage of CD34+ cells contained in human PT was 8.8 times higher than that of in UCB (P<0.01). The total number of lymphocytes, T cells (CD3+CD2+), B cells (CD19+), Th (CD3+CD4+) and Th/Ts ratio were apparently lower in human placenta, while the number of CD8+CD28- T suppressor cells were higher compared to UCB samples (P<0.01). Among PT, CFU-GM, BFU-E and CFU-Mix frequencies of CD34+CD38- cells subset were much higher than that of CD34+CD38- (P<0.01). Within the same phenotype of cell subsets, however, the number of each colony-forming unit was similar between PT and UCB (P 0.05).CONCLUSION: Human PT is richer in CD34+CD38-, CD34+CD38+ HSPCs and both of them have the abilities of proliferating and differentiating into CFU-GM, BFU-E and CFU-Mix. Considering that human PT have a lower lymphocyte subpopulations and higher Ts cells, human PT might be a alternative and suitable source of HSPCs for clinical transplantation.

Objective To determine if there is any difference in neuronal and glial(astrocytic and microglial)activation in the spinal cord in three rat models of neuropathic pain.Methods Twenty-four SD rats weighing 150-200 g were randomly divided into 4 groups(n=6 each):Ⅰ control group;Ⅱ chronic constrictive injury group(CCI);Ⅲ spinal nerve ligation group(SNL)and Ⅳ spared nerve injury(SNI).No operation was performed in control group.In CCI group left sciatic nerve was exposed and loosely ligated with catgut.In SNL group the L_5 spinal nerve was exposed and ligated with silk suture and cut.In SNI group tibial nerve and common fibular nerve were ligated and cut.Pain threshold was measured using plantar tactile stimulator(Ugo,Basile Co. Italy)every other day from 3 days before until 15 days after operation.50% paw withdrawal threshold was measured using up-and-down sequential mechanical stimulation of different intensity(0.45,0.70,1.20,2.00, 3.63,5.50,8.50,15.10 g)applied to the plantar surface of the injured paw.On the 15~(th) day after operation after pain threshold was measured the animals were anesthetized with intraperitoneal 10% chloral hydrate 400 mg? kg~(-1).The L_(5,6) segment of the spinal cord was isolated.Neuronal,astrocytic and microglial activation was determined by immuno-histochemistry with antibodies of c-Fos(a proto-oncogene protein),GFAP(an astrocyte marker)and OX-42(a microglial marker).Results The 50% paw withdrawal threshold reached the lowest level on the 7~(th) day after operation.The lowest level was maintained until the 15~(th) day after operation in group CCI,SNL and SNI.The 50 % paw withdrawal threshold was(14.1+1.5)g in control group,(2.5+0.5)g in CCI group, (1.5?0.6)g in group SNL and(0.8?0.4)g in group SNI.The number of c-Fos positive neurons in laminae Ⅳ-Ⅵ of dorsal horn was significantly greater in group CCI,SNL and SNI than in control group,but there was no significant difference among the 3 peripheral nerve injury groups.The activation of astrocytes and microglias in laminae Ⅰ-Ⅳ of dorsal horn was significantly increased in group CCI,SNL and SNI than in control group but there was no significant difference among the 3 peripheral nerve injury groups.Condusion There is no significant difference in activation of neurons and astrocytes and microglias in the ipsilateral dorsal horn among the 3 pain models.

Objectives:To explore the relationship between cyber bullying incident and psychological status of college students,and the effects of online social support and psychological resilience.Methods:Totally 608 college students (aged 17-25 years) were selected.They were investigated with the Cyberbullying Inventory (CI,including cyber bullying and cyber bullied),Symptom Checklist 90 (SCL-90),College Students' Online Social Support Scale (CSOSSS) and Connor-Davidson Resilience Scale (CD-RSIC).Results:Online social support partly mediated the relationship between cyber bullying dimension or cyber bullied dimension and psychological status,and the ratios of the mediating effects to total effects were 24.1％ and 22.0％ separately.Psychological resilience didn't moderate the relationship between cyber bullying dimension and psychological status (β =0.01,P ＞ 0.05),but moderated the relationship between cyber bullied and psychological status (β =-0.08,P ＜ 0.05).Conclusion:The cyber bullying and cyber bullied may be not only related to psychological status directly,but also related to social support indirectly through online.Psychological resilience could buffer the effect of cyber bullied on psychological status.

OBJECTIVE: To access application value of multi-slice spiral computed tomography (MSCT) and coronary artery calcium scoring (CACS) in investigation the coronary artery disease (CAD), and to explore the effective way of virtual autopsy to evaluate the sudden death due to CAD. METHODS: Nine cases of sudden cardiac death were collected to analyze MSCT before the autopsy. The quantitative analysis of the degree of coronary artery calcium was made by Agatston's method. The CACS of all the subjects were calculated based on the diagnostic criteria for CAD, in which calcium scoring was more than 400. The results of CACS were compared with that of the autopsy. RESULTS: Only 2 cases got the high calcium scoring which were more than 400 in the 9 cases died of CAD confirmed by the autopsy. The prediction rate of CACS for CAD was only 22.2%. Pulmonary edema of different severity was found in both autopsy and MSCT. There was a higher morbidity rate in the left anterior descending of coronary artery than the other branches. CONCLUSION Obvious calcification of coronary artery can be detected by MSCT and calculating CACS. To detect subtle calcification needs other technologies such as postmortem angiography.
Autopsy ; Coronary Angiography ; Coronary Artery Disease/diagnostic imaging* ; Death, Sudden/pathology* ; Humans ; Multidetector Computed Tomography/methods* ; Predictive Value of Tests ; Vascular Calcification/diagnostic imaging*