The effects of phorbol-12,13-dibuterate (PDBu) on total sodium current (I(Na)-total), tetrodotoxin-resistant sodium current (I(Na)-TTXr), 4-AP-sensitive potassium current (I(A)) and TEA-sensitive potassium current (I(K)) in trigeminal ganglion (TG) neurons were investigated. Whole-cell patch clamp techniques were used to record ion currents in cultured TG neurons of rats. Results revealed that 0.5 micromol/L PDBu reduced the amplitude of I(Na)-total by (38.3+/-4.5)% (n=6, P<0.05), but neither the G-V curve (control: V (0.5)=-17.1+/-4.3 mV, k=7.4+/-1.3; PDBu: V (0.5)=-15.9+/-5.9 mV, k=5.9+/-1.4; n=6, P>0.05) nor the inactivation rate constant (control: 3.6+/-0.9 ms; PDBu: 3.6+/-0.8 ms; n=6, P>0.05) was altered. 0.5 micromol/L PDBu could significantly increase the amplitude of I(Na)-TTXr by (37.2+/-3.2)% (n=9, P<0.05) without affecting the G-V curve (control: V (0.5)=-14.7+/-6.0 mV, k=6.9+/- 1.4; PDBu: V (0.5)=-11.1+/-5.3 mV, k=8.1+/-1.5; n=5, P>0.05) or the inactivation rate constant (control: 4.6+/-0.6 ms; PDBu: 4.2+/-0.5 ms; n=5, P>0.05). 0.5 mumol/L PDBu inhibited I(K) by (15.6+/-5.0) % (n=16, P<0.05), and V (0.5) was significantly altered from - 4.7+/-1.4 mV to -7.9 +/-1.8 mV (n=16, P<0.05). I(A) was not significantly affected by PDBu, 0.5 mumol/L PDBu decreased I(A) by only (0.3+/-3.2)% (n=5, P>0.05). It was concluded that PDBu inhibited I(Na)-total but enhanced I(Na)-TTXr, and inhibited I(K) without affecting I(A). These data suggested that the activation of PKC pathway could exert the actions.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Autoantibodies ; biosynthesis ; Case-Control Studies ; Child ; Female ; Humans ; Immunoglobulin G ; biosynthesis ; Male ; Middle Aged ; Pancytopenia ; immunology ; pathology ; Receptors, Erythropoietin ; physiology ; Young Adult

ObjectiveTo observe the therapeutic efficacy of warm needling plus Chinese medicinal fumigation and rehabilitation training in treating post-stroke shoulder pain.MethodSixty eligible patients were randomized into a treatment group (warm needling plus Chinese medicinal fumigation and rehabilitation) and a control group (rehabilitation training), 30 casesin each group. The Visual Analogue Scale (VAS), Fugl-Meyer Assessment Scale (FMA) and Barthel Index (BI) were respectively used to evaluate pain intensity, upper-limb motor function and activities of daily living, and the clinical efficacies were compared between the two groups.ResultAfter 30-day treatment, the improvements of shoulder pain intensity, upper-limb motor function and activities of daily living in the treatment group were more significant than that in the control group (P<0.05). There were no adverse events happened in the two groups.ConclusionWarm needling plus Chinese medicinal fumigation and rehabilitation training can effectively and safely mitigate shoulder pain, improve upper-limb motor function, and enhance the activities of daily living, and its therapeutic efficacy is superior to that of the control group.

iple occurrence of the tumor, which can decline its recurrence and postpone its progression.

Objective To explore the adiponectin expression in the chronic hepatitis B (CHB) patients and compare the level of edipanectin before and after antiviral therapy, and investigate the relationship between ediponectin and CHB. Methods Serum adiponectin was detected by enzyme linked immunosorbent assay (ELISA), and the expression of adipanectin in liver tissue was detected by palymerase chain reaction (PCR) and immunohistochemistry. The liver functions and HBV DNA were also tested. Liver biopsy tissue was assessed by fibrosis stage. Results Serum adipanectin in CHB liver cirrhosis [(20.65 ± 1.29) mg/L]was higher than that in other stage fibrosis, the values were (8.57 ± 0.28 ), (12.22 ± 0.64), (15.22 ± 0.77 ) mg/L (P< 0.01 ). Serum adiponectin was positively associated with fibrosis stage(r = 0.976,P< 0.01 ). There was no significant difference between HBV DNA and ALT (P> 0.05 ). Serum adipanectiu was independently associated with liver cirrhosis (r = 1.07, P = 0.02, 95% CI = 1.00-l.14).At the end of antiviral therapy,the expressions of adiponectin declined in patients with improved fibrosis and sustained viral response. Conclusion Serum adiponectin may play a role in CHB fibrosis, and reduced adipanectin level is associated with improved fibrosis after antivital therapy.

AIMTo investigate the role of serine/threonine protein phosphatases in regulation of cell signal transduction on voltage-dependent sodium channels in rat trigeminal ganglion (TRG) neurons. METHODSWhole-cell patch clamp techniques were used to record the total sodium current (INa-T) and the tetrodotoxin-resistant sodium current (INa-TTX-R) before and after okadaic acid, a potent inhibitor of the serine/threonine protein phosphatases 1 and 2A, perfusion on adult rat TRG neurons. RESULTS1μmol*L-1 okadaic acid inhibited INa-T by (20±13)% (n=9, P<0.05) and INa-TTX-R by (4±3)% (n=6, P<0.05), respectively. The inhibition on INa-T was significantly greater than that on INa-TTX-R (P<0.05). Furthermore, 1μmol*L-1 okadaic acid produced significant 3-4 mV hyperpolarizing shifts in the conductance-voltage curves of INa-T, while it had no effect on that of INa-TTX-R. CONCLUSIONThe serine/threonine protein phosphatases take part in the regulation of total and TTX-R sodium channels on rat TRG neurons. In addition, small-diameter TRG neurons express various voltage-gated sodium channel with different sensitivity to okadaic acid.

BACKGROUND: Transplantation of microencapsulated rabbit Schwann cells in the rat spinal cord can relieve inflammatory reaction, promote spinal cord regeneration, but the precise mechanisms remain unclear. OBJECTIVE:To observe basic fibroblast growth factor (bFGF)expression and movements recovery following transplantation of microencapsulated rabbit Schwann cells in rat spinal cord. METHODS: The sciatic nerves taken out from rabbits wore digested with mixed enzyme and were made into Schwann cells suspension. Then we used air-jet method to make Schwann cells microcapsule. Using the same method, empty microcapsule was made. Sprague Dawiey rats were randomly divided into cell group, empty microcapsule group and microcapsule group. Conducted by hemisection injury of spinal cord,the rats in cell group,empty microcapsule group and microcapsule group were implanted with gelatin sponge with 10μL Schwann cells suspension, gelatin sponge with 10 μL empty microcapsule and 10 μL microencapsulated Schwann cells. Normal group was left intact. After operation, we observed hindlimb movements recovery in rats with the Basso, Beattie, and Bresnahan (BBB) scale. Meanwhile,a set of sections were stained immunohistochemically for bFGF expression, another set of sections wore stained for hematoxylin-eosin and Nissal. RESULTS AND CONCLUSION: After spinal cord injury, rat right hindlimb affected paralysis immediately. At 7, 14 and 28 daysfollowing transplantation,motor function in rat hindlimb was significantly recovered, and the BBB scores were significantly higher in microencapsulated schwenn cells than in cell and empty microcapsule group (P < 0.05 or P < 0.01). bFGF positive products were mainly distributed in cytoplasm of the spinal neuron and nucleus of neuroglical cell. The numbers of bFGF positive glial cells mainly appeared surrounding the spinal cord injured site on days 1, 3, 7 and rose to its peak on day 3 and began to appear in neuronal calls on day 14. The number of bFGF positiv cells in microcapsule group was significantly superior to that in cell group and empty microcapsule group. From then on, the bFGF expreSsion was significantly decreased in each group. These indicated that transplantation of microencapsulated Schwann cells can inhibit the immunological rejection after xenotransplantation, suppress inflammatory reaction, improve the expression of bFGF, increase hindlimb movements recovery and spinal cord regeneration after spinal cord injury.

Objective To study the influence of sivelestat sodium on platelets activity,injury and count during cardiopulmonary bypass (CPB)in dogs.Methods Twelve adult health dogs were randomly divided into control group (group C,n=6)and sivelestat sodium group (group S,n=6). Sivelestat sodium at 15 mg/kg was administrated intravenously before the establishment of CPB and then was maintained intravenously at 10 mg·kg-1·h-1 to the end of CPB in the group S,and the same volume of saline was used in the group S.The levels of neutrophil elastase (NE),malondialdehyde (MDA),granular membrane protein-140 (GMP-140),thromboxaneB2 (TXB2 ),the count of plate-lets and the hematocrit (Hct)were measured before CPB,15 and 45 min after cross-clamping and 30, and 60 min after aortic unclamping in both groups.Results The levels of NE,GMP-140,TXB2 at T2-T5 and MDA at T3-T5 were significantly higher than those at T1 in both groups;moreover the lev-els were significantly lower in group S than group C (P<0.05).The levels of Plt at T2-T5 were sig-nificantly lower than those at T1 in both groups;moreover the levels were significantly higher in group S than group C (P <0.05).Conclusion Sivelestat sodium reduced the levels of plasma NE, MDA,GMP-140,TXB2 inhibited the activation of Plt,and decreased the injury and consumption of Plt,which presents the protective effects for Plt during CPB.

Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Silicosis ; diagnostic imaging ; Tomography, Spiral Computed

Objective To investigate the relationship between helicobacter pylori(Hp) infection and Henoch-Schonlein purpura(HSP) in children and find out the etiological treatment for HSP.Methods Positive rate of Hp-IgG between normal children and children with HSP were compared.Infection of Hp was detected by rapid urease test,and relationship between infection of Hp and clinical symptom in Henoch purpura was analyzed.Children with HSP were randomly divided into two groups and were respectively treated with Hp eradication therapy together with conventional therapy and conventional therapy only.The recurrence rates were compared.Results The infection rate in 150 children with HSP,especially the 90 children with Henoch purpura was significantly higher than that in normal children,and it was in positive correlation with abdominal symptom.Hp infection with triplex therapy for 2 weeks in HSP could reduce the recurrence of HSP.Conclusions Hp infection may be one of the reasons of HSP in children,and is related with Henoch purpura.Eradication of Hp can reduce recurrence of HSP.