Objective:To explore the relationship between DRD2 - 141C Ins/Del polymorphism and heroin craving. Methods:380 heroin addicts who were under abstinence were given the cue- elicited heroin craving experiment. And then we detected the polymorphism of DRD2- 141CIns/Del for them by using PCR- RFLP. We compared the relationship between genotypes of DRD2- 141CIns/Del and heroin craving before and after cue exposure. Results:No significant differ- ence has been found between heroin craving before and after cue- exposure in three genotypes of DRD2- 141CIns/Del. Conclusion:D2 receptor gene - 141CIns/Del polymorphisms may have no association with the susceptibility of heroin crav- ing.

objective To explore the effect of application of cluster-based strategies on preventing the complication of fibrosclerosis of patients with systemic scleroderma.Methods A total of 59 patients with systemic scleroderma were randomly assigned to the experimental group (34 cases) and the control group (25 cases) during the period of hospitalization in our department.The experimental group took the cluster-based strategies after admission,including a gymnastics,two kinds of respiratory breathing,three kinds of habits,four kinds of protection to prevent the complication of fibrosclerosis.The control group received the conventional care procedures of dermatology.The skin stiffness,joint function,Raynaud's phenomenon and swallowing function were evaluated when patients were admitted and before discharge in two groups.The length of stay between the two groups was also compared.Results The skin stiffness,joint function,Raynaud's phenomenon and swallowing function scored (14.74±1.33),(7.06±0.69),(0.88±0.33),(0.54±0.21) in the experimental group,significantly better than those of the control group,(24.08±1.12),(13.48±0.77),(1.24±0.60),(0.96±0.34),P ＜ 0.01.The length of stay in the experimental group and the control group was (23.65±5.45),(32.00±6.56) days,t=-5.340,P ＜ 0.01.Conclusions Application of cluster-based strategies can be effective against the fibrosclerosis damage of patients with systemic scleroderma and reduce the occurrence of complications.

Objective To study the effects of exogenous double-stranded DNA antigen on the immunophenotypic changes of dendritic cells (DCs) derived from stem cells in mouse bone marrow. Methods LinCD117 (c-kit)+ hemopoietic stem cells were obtained from the bone marrow of C57 mice by magnetic affinity cell sorting. Some cytokines, including granulocyte-macrophage colony-stimulating factor, interleukin-4, tumor necrosis factor-α and so on, were used to enhance the proliferation or differentiation of stem cells to obtain mature, semimature and immature DCs. The double stranded DNA of kinetoplast (kDNA) was isolated from Trypanosoma equiperdum, and added to the culture media to pulse DCs. The immunophenotypic and morphologic features of DCs were analyzed by using flow cytometry and laser confocal microscopy respectively. Results The expression rates of CD117 and CD11c in DCs showed no significant changes after kDNA pulse compared with those before the pulse. In unpulsed immature, semi-mature and mature DCs, the expression rate was 11.42% ± 2.56%, 27.08% ± 5.29% and 44.63% ± 10.37% for MHC Ⅱ, 8.54% ± 2.01%, 31.35% ± 6.40% and52.96% ± 10.34% for CD80, 10.22% ± 3.47%, 32.15% ± 6.83% and 64.72% ± 9.68% for CD86, respectively.After pulse with the kDNA antigen, the expression rate increased by 15.63%, 9.66% and 4.12% (t = 6.21,4.35, 2.82, P < 0.05) for MHC Ⅱ, by 9.63%, 7.09% and 4.09% for CD80, by 13.16%, 9.75% and 3.10% for CD86, respectively in immature, semi-mature and mature DCs, respectively. The increase of expression rate of these membrane antigens in decreasing order was observed in immature DCs, semi-mature DCs and mature DCs. Conclusions The exogenous DNA antigen could enhance the maturation of bone marrow-derived DCs,likely by upregulating the expression of certain immunophenotypic membrane proteins, and the lower the maturity degree, the more liable the DCs to be affected by the antigen.

Objective To examine the effects of carbon dioxide (CO2) pneumoperitoneum on local pancreas pathological changes,serum levels of amylase,IL-1,IL-6,and the positive rate of dissolubility adhesion molecule (CD11a/CD18 and CD11b/CD18) expression in rats with severe acute pancreatitis (SAP). Methods Fifty healthy male Sprague-Dawley (SD) rats were randomly divided into 3 groups:CO2 pneumoperitoneum group (n=20):SAP was induced by injecting 5% sodium taurocholate through retrogradely common biliopancreatic ducts via duodenal papilla,and then CO2 pneumoperitoneum was established at a pressure of 12 mm Hg (1 mm Hg=0.133 kPa) for 30 min; SAP group (n=20):The rats were treated as same as CO2 pneumoperitoneum group,except CO2 pneumoperitoneum; Simple operation group (n=10):Laparotomy was performed and nothing was done to duodenum and pancreas except for moving them softly. The blood samples were collected for examining serum levels of amylase,IL-1,IL-6,and the positive rates of CD11a/CD18 and CD11b/CD18 expression,and histopathologic examination of pancreas was performed. Results Compared with simple operation group,the pancreatic pathologic histology score,serum levels of amylase,IL-1,IL-6,and the positive rates of CD11a/CD18 and CD11b/CD18 expression were significantly higher in CO2 pneumoperitoneum group and SAP group (P=0.000). The levels of IL-1 and IL-6 were significantly lower in CO2 pneumoperitoneum group as compared to SAP group (P=0.000). There was no significant difference between CO2 pneumoperitoneum group and SAP group in pancreatic pathologic histology score (P=0.294),the level of serum amylase (P=0.073),the positive rates of CD11a/CD18 (P=0.155) and CD11b/CD18 expression (P=0.201). Conclusion CO2 pneumoperitoneum has inhibitory effect on the levels of IL-1 and IL-6,rather than the positive rates of CD11a/CD18 and CD11b/CD18 expression in SD rats with SAP.

Objective To investigate curative efficacy of tetramethylpyrazine in combination with chemotherapy in treatment of medium and advanced liver cancer and its effects on level of brain-derived neurotrophic factor ( BDNF).Methods 90 patients of medium and advanced liver cancer who received therapy from January 2011 to June 2012 were selected as research objects.According to therapeutic schemes, those patients were divided into the control group (n=42) and the observation group (n=48).The control group was treated with transcatheter hepatic arterial chemoembolization ( TACE) , while the observation group was treated with tetramethylpyrazine in combination with TACE.Then, the short-term curative efficacy, long-term curative efficacy, level of BDNF and adverse reactions were compared.Results The total short-term therapeutic efficacy ratio in the observation group was statistically higher than that in the control group ( 83.3% vs 64.3%, P <0.05 ).During the three-year follow-up, the one-year and two-year survival rate in the observation group was statistically same with that in the control group respectively (75.0% vs 66.7%, 66.7% vs 59.5%), while the three-year survival rate was statistically higher than that in the control group (52.1%vs 30.9%, P<0.05).After treatment, in comparison with the control group, level of BDNF in the observation group was statistically lower(P<0.05).During treatment, incidences of liver function deterioration, abdo minal pain and diarrhea, nausea and vomiting, fever and headache in two groups were statistically same.Conclusion Tetramethylpyrazine in combination with TACE is effective for medium and advanced liver cancer, which can increase short-term and survival rate to some extent, significantly reduce level of BDNF with not increasing incidence of adverse reactions.

Objective This paper summarize peri-operative nursing of minimally invasive surgery on osteoradionecrosis of skull base after radiotherapy for nasopharyngeal carcinoma.Methods 47 cases of osteoradionecrosis of skull base after radiotherapy for nasopharyngeal carcinoma were operated via nasal endoscope from March 2006 to March 2013.Focused peri-operative psychological support and adequate medical care were given to patients.Strengthened nasal nasopharyngeal cavity nursing,the observation and nursing of complications were carried out after operation and health guidance pre-discharge was given.Results The operations of 47 cases were successful and no major complication of intra-operation and post-operation occurred.Headache and foul odor relieved after operation.The follow-up continued for 3 to 84 months,46 cases were survived,1 case died of nasopharyngeal massive bleeding.Conclusions Effective peri-operative nursing of minimally invasive surgery on osteoradionecrosis of skull base after radiotherapy could ensure patients' cooperation and the smooth implementation of surgery and improve the quality of life.

Objective To investigate the effect of electrical stimulation of S_3 nerve root on improvement of intestinal mucosal barrier function in rabbits with acute complete spinal cord injury. Methods Model of paraplegia was built by injuring spinal cord in rabbits. Then, the rabbits with electrical stimulation of S_3 nerve root were set as experimental group and those without set as control group. Normal rabbits were set as normal group. Under aseptic condition, portal vein blood was collected for quantitative determination of endotoxin and bacterial culture ; and liver, spleen and mesenteric lymph nodes were collected for bacterial culture and strain identification. Liver, spleen, mesenteric lymph nodes and small intestines were collected from experimental group and control group for pathological HE staining; while small intestine were observed by light and electron microscopes. Results In control group, the intestinal mueosal barrier and the other organs were destroyed obviously, with higher level of Serum endotoxin and higher rate intestinal flora translocation than that in experimental group and normal group. In the experimental group, the electrical stimulation of S_3 nerve root could improve motility of the denervated intestine, with more defecation content, less destruction of the intestinal mucosa and lighter other organ damage compared with control group, serum endotoxin level was significantly reduced compared with control group but showed no statistical difference compared with normal group, with obvious decrease of bacterial translocation rate. Conclusions After spinal cord injury in rabbits, electrical stimulation of S_3 nerve root can facilitate intestinal tract motility, improve intestinal mucosal barrier function and hence alleviate endotoxemia and intestinal bacterial translocation, as is beneficial to reducing SIRS and MOBS.

Objective To investigate the intestinal pathophysiological mechanism of bacterial translocation and endotoxemia in rabbits with acute spinal cord injury (SCI). Methods Paraplegia was induced by injuring the spinal cord of 30 rabbits by the method of Fehlings. Twelve rabbits were used for recording the changes of gastrointestinal (GI) electrophysiology and colon pressure. The left 18 rabbits were experimental group and were killed in 24, 48 and 72 h after injury. The other 6 rabbits served as normal group. Under aseptic condition, samples of blood and mesenteric lymph node were collected for bacterial cultures and endotoxin detection. The small intestines were observed by light and electron microscopy. The colons were inspected by light microscopy. Results After SCI, the electrophysiology of the GI tract was changed especially at the middle and distal colon. The peristalsis of the middle and distal colon was reduced and sometimes even disappeared. In the early stage, the main pathology was hyperemia of blood vessel and infiltration of inflammatory cells. The interepithelial tight junctions became wider and the columnar epithelium was disintegrated. All of the pathological changes may lead to the destruction of the intestinal barrier. The endotoxin level were increased since 24 h after SCI and had statistically significant difference compared with that at 72 h (P0.05). Conclusion After SCI, the middle and distal colon dysfunction induces constipation, bacterial overgrowth, and blood flow congestion. These factors may accelerate the destruction of the intestinal barrier and lead to bacterial translocation and endotoxemia.

Objective To investigate the influence of tissue-specific growth hormone receptor (GHR)deficiency in type 1 diabetes in the mice at the gene level using pancreaticβcells combined with streptozotocin (STZ)-induced type 1 diabetes model.Methods The experiment was divided into four groups:knockout mice group (LLc knockout group), using the homozygotes (LLc:LL+Cre) producted by pancreaticβ cell-specific expressed recombinant enzyme mice (RIP-Cre)and Cre-LoxP system modified GHR mice (Floxed,LL);LL control group, containing Floxed GHR allele homozygous mice (LL);LLc STZ group and LL STZ group (STZ was used for inducing type 1 diabetes model mice). The mice with feeding glucose≥25 mmol · L-1 were considered to be successful models.The Glucose Tolerance Test (GTT),pancreas tissue HE staining and immunohistochemistry were performed in the mice.Results The blood glucose of the mice in LL STZ group and LLc STZ group and LLc STZ group were increased after inj ection of STZ and the models achieved the diagnostic criteria for diabetes 1 6 d later.The results of GTT showed that compared with LLc control group and LLc knockout group, the blood glucose levels of the mice in LL STZ and LLc STZ groups were increased (P<0.05).There was no significant change of morphology and structure of islets between LL control group and LLc knockout group detected by HE staining. The immunohistochemistry results showed that the insulin level of the mice in LL STZ group was significantly reduced compared with LL control group;the insulin level of the mice in LLc STZ group was reduced compared with LLc control group.Conclusion Pancreaticβcell GHR gene knockout has no effect on the blood glucose and the function ofβcells in the mice with STZ-induced type 1 diabetes.

Objective To investigate the effect of anterior percutaneous endoscopic discectomy (APECD) and open-door laminoplasty (ODLP) through hybrid surgery in the treatment of multisegmental cervical stenosis and giant disc herniation. Methods This study involved 3 patients with multisegmental cervical stenosis and giant disc herniation confirmed by MRI. Among them, there were 2 males and 1 female, with ages from 56-61. All patients showed significant paresthesia or weakness, and were treated between September and November 2016. The surgery was performed by first the ODLP that made spinal cord back shift, and then APECD for the second step. The visual analog scale (VAS) and neck disability index (NDI) were assessed before and after operation. Results The VAS and NDI scores were improved two weeks after operation. No adverse events like spinal cord injury and vascular injury were found during the operation. After operation, no patients were found incision infection, hematoma formation, cerebrospinal fluid leakage, dysphagia, trachyphonia and so on. Conclusion The hybrid surgery of APECD and ODLP for the treatment of the multisegmental cervical stenosis and giant disc herniation can not only decompress the nerve safely and improve the function, but also preserve cervical intervertebral disc and motion segments, therefore delaying the degeneration of adjacent segments with clinical significance.