Objective To study the efficacy and safety of nanometer perfluorocarbon (PFC) in the treatment of hemorrhagic shock, and its role in protecting cerebral cortex nerve cells.Methods Hemorrhagic shock was induced in New Zealand rabbits by arterial bleeding. In the course of the experiment, heart rate, respiratory rate, blood pressure, blood gases, hepatic and renal function, and pathological changes in cerebral cortex were observed. Results The survival rate of animals in the experimental group at 12 hours was higher than that of control group, respiration was deeper and respiratory rate was faster, blood pressure and PaO 2 were significantly higher than that in animals of the control group. There was a tendency of acidosis in the control group. Pupil reflex was more sensitive in the experimental group, and hepatic and renal functions were better in the experimental group than that in control group. Pathological observation showed the cerebral cortex was less damaged in the treatment group than that in control group. Conclusions Nanometer PFC was effective in combating hemorrhagic shock, showing no toxicity to liver and kidney, and it could also be used as an effective neuroprotective agent.

Objective To explore the effects of 1α,25-dihydroxyvitamin D3 [1,25(OH)2D3] on memory CD4+T cells of focal proliferative IgA nephropathy (IgAN)patients.Methods (1) Total of twenty incipient focal proliferative IgAN patients (Lee classification:Ⅲ level) were chosen as IgAN group and 20 healthy volunteers were chosen as healthy control group.The level of serum 1,25(OH)2D3 was measured by radioimmunoassay (RIA).Peripheral blood mononuclear cells (PBMCs) were separated by the method of Ficoll density gradient centrifugation and were stimulated with anti-CD3/anti-CD28 in the absence or presence of various concentrations of 1,25(OH)2D3,Dexamethasone(DEX) and 1,25(OH)2D3and DEX combined.PBMCs were cultured for 72 hours and the levels of IFN-γ,IL-4,IL-17A,Foxp3 were measured by flow cytometry(FCM),standing for the levels of Th1,Th2,Th17,Treg.(2) IgAN group was divided into two subgroups (proteinuria ＜ 1 g/24 h subgroup,proteinuria≥ 1 g/24 h subgroup),then the serum levels of 1,25(OH)2D3,IFN-γ,IL-4,IL-17A,Foxp3 were compared.Results Compared with healthy control group,serum 1,25(OH)2D3 level of IgAN group was significantly lower (P ＜ 0.05).Serum 1,25(OH)2D3 level in proteinuria≥ 1 g/24 h subgroup was significantly lower than proteinuria ＜ 1 g/24 h subgroup and healthy control group (P ＜ 0.05).The level in proteinuria ＜ 1 g/24 h subgroup was lower than healthy control group,but the difference was not statistically significant (P ＞ 0.05).(2) The levels of IFN-γ and IL-17A and the ratios of IFN-γ/IL-4,IL-17A/Foxp3 in IgAN group increased significantly compared with healthy control group (all P ＜ 0.05),and the level of Foxp3 decreased significantly (P ＜ 0.05).The level of IL-4 also increased,but the difference was not statistically significant (P ＞ 0.05).The levels of IFN-γand IL-17A and the ratio of IL-17A/Foxp3 in proteinuria≥ 1 g/24 h subgroup increased significantly,and the level of Foxp3 decreased significantly,compared with urinary protein ＜ 1 g/24 h subgroup and healthy control group (P ＜ 0.05).The ratio of IFN-γ/IL-4 in proteinuria≥1 g/24 h subgroup and proteinuria ＜ 1 g/24 h subgroup all increased,compared with healthy control group,and the ratio in proteinuria≥ 1 g/24 h subgroup increased significantly (P ＜ 0.05).There was no significant difference in the level of IL-4 among all groups.(3) After treatment with 1,25(OH)2D3,the levels of IFN-γ and IL-17A and the ratios of IFN-γ/IL-4 and IL-17A/Foxp3 decreased significantly,and the level of Foxp3 increased significantly (P ＜ 0.05),and these effects were more obvious as the increase of the drug concentration.The level of IL-4 did not change significantly.The combination of 1,25(OH)2D3 and DEX had a synergistic inhibition on the production of IFN-γ,IL-4,IL-17A,and the ratios of IFN-γ/IL-4 and IL-17A/Foxp3,and had a synergistic promotion on the production of Foxp3.Conclusions There is a certain extent of vitamin D deficiency in focal proliferative IgAN patients,which may be associated with the severity of proteinuria.The disorder of immunomodulatory effects of memory CD4+ T cell might exist in the patients of focal proliferative IgAN.1α,25-dihydroxyvitamin D3 might have beneficial effects on the immunoregulation of memory CD4+T cells of focal proliferative IgAN patients.

Objective To determine the gene polymorphism and serum concentration of mannose-binding lectin (MBL) in patients with psoriasis,and to analyze the relationship between MBL and psoriasis.Methods Totally,67 patients with psoriasis vulgaris and 69 healthy human controls were enrolled in this study.Venous blood samples were obtained from all the subjects.Genomic DNA was extracted,and PCR-restriction fragment length polymorphism (PCR-RELP) analysis was conducted to determine the polymorphism at codon 54 of the MBL gene.Enzyme-linked immunosorbent assay was performed to measure the serum level of MBL.A chi-square goodness-of-fit test was carried out to evaluate Hardy-Weinberg equilibrium,t test to compare the serum concentration of MBL,and chi-square test to compare the frequency of genotypes and alleles of MBL gene codon 54.Results The patients with psoriasis showed higher frequency of GGC/GAC heterozygote but lower frequency of GGC/GGC homozygote (x2 =10.36,P ＜ 0.05),together with increased frequency of GAC allele but decreased frequency of GGC allele (x2 =8.31,P ＜ 0.05),at codon 54 of the MBL gene compared with the healthy controls.The variant allele GAC at codon 54 of the MBL gene was markedly associated with psoriasis (OR =3.383,95％ CI 1.585-7.211,P ＜ 0.05).The serum concentration of MBL was (2.193 7 ± 0.816 3) mg/L in patients with psoriasis,significantly lower than that in the healthy controls ((3.269 5±1.205 8) mg/L,t=6.11,P＜ 0.05).Conclusion MBL might be associated with the pathogenesis of psoriasis to some degree.

OBJECTIVE:To investigate the effects of selenium(Se)and/or vitamin E(VE)on the NO and NOS in heart,liver,kidney and serum of experimental hyperlipidemic rats.METHODS:SD rats were divided into5groups,administreated by Se and/or VE.After4weeks,the NO contents and NOS activities in heart,liver,kidney and serum were assayed by NO kit and NOS kit respectively.RESULTS:NO contents and NOS activities could be reduced in heart,liver,but increased in serum and kidney by high-fat feed(HFF).Meanwhile,VE and/or Se could increase the NO contents in all the experimental samples and NOS activities in heart,liver and kidney(P

Objective To investigate the expression of mannose-binding lectin (MBL) in lesions of patients with psoriasis vulgaris,and to explore the relationship between MBL and psoriasis pathogenesis.Methods Immunohistochemistry and Western blot were performed to detect the expression of MBL in lesional and normalappearing perilesional skin of 30 patients with progressive psoriasis vulgaris,as well as in normal skin of 30 healthy human controls.Statistical analysis was carried out by t test using SPSS13.0 software.Results Immunohistochemistry showed that MBL was expressed in lesional psoriatic skin,but weakly expressed or absent in normalappearing perilesional skin and normal control skin,with the relative expression level of MBL in lesional skin significantly higher than that in perilesional skin and normal control skin (0.636 7 ± 0.515 1 vs.0.416 3 ± 0.160 1 and 0.381 6 ± 0.310 9,t =2.24,2.32,respectively,both P ＜ 0.05).Western blot revealed a positive expression of MBL protein in all the skin specimens,and the expression intensity of MBL protein in lesional psoriatic skin was significandy increased compared with perilesional psoriatic skin and normal control skin (0.273 1 ± 0.129 4 vs.0.186 3 ± 0.193 1 and 0.149 2 ± 0.268 7,t =2.05,2.28,respectively,both P＜ 0.05).No significant difference was shown in the expression of MBL protein between perilesional psoriatic skin and normal control skin by immunohistochemistry (t =1.51,P ＞ 0.05) or Western blot (t =0.61,P ＞ 0.05).Conclusion There is a high expression of MBL protein in lesions of patients with psoriasis vulgaris,which may be somewhat associated with the pathogenesis of psoriasis.

Objective To investigate the influence factors of serum CA125 level in patients with ovarian chocolate cysts,and to study the effect on serum CA125 level of interventional therapy.Methods A total of 103 patients with single unilateral chocolate cyst of ovary underwent interventional treatment.According the serum CA125 level before interventional therapy,the patients were divided into normal group (CA125≤35 U/ml) and abnormal group (35 U/ml＜CA125≤200 U/ml).The clinical indexes of patients and ultrasound characteristics of cyst were compared between the two groups.The changes of serum CA125 levels before and after interventional therapy were analyzed.Results The difference of the course of diseases,dysmenorrhea history,diameter of cysts had statistical difference between the two groups (all P＜0.05).There were no statistical differences of age,history of dilivery,abortion history,history of pelvic surgery,cyst location between the two groups (all P＞0.05).In abnormal group,the mean serum level of CA125 reduced at 3 months (P＜0.000 1) and 6 months (P ＜0.000 1) after interventional therapy.In the normal group,there was no significant difference of the mean serum level of CA125 before and after interventional therapy (all P＞0.05).Conclusion Serum CA125 level is influenced by dysmenorrhea history,course of disease,diameter of cysts.Ultrasound-guided interventional therapy has intervention effect on patients with abnormal serum CA125 level before interventional therapy.

Objective To explore the clinical efficacy of single-port Da Vinci robotic surgical system in the radical gastrectomy of gastric cancer.Methods The retrospective descriptive study was conducted.The clinical data of the first patient in China who underwent single-port radical gastrectomy of gastric cancer using Da Vinci robotic surgical system in the Southwest Hospital of the Third Military Medical University in June 2017 were collected.Patient underwent radical gastrectomy of gastric cancer using single-port Da Vinci robotic surgical system +D2 lymph node dissection + Billroth Ⅱ anastomosis.Observation indicators:(1) intra-and post-operative situations;(2) follow-up and patients' survival.Follow-up using outpatient examination and telephone interview was performed to detect the patients' postoperative survival up to July 2017.Results (1) Intra-and postoperative situations:patient underwent radical distal subtotal gastrectomy of gastric cancer using single-port Da Vinci robotic surgical system.Operation time and volume of intraoperative blood loss were respectively 303 minutes and 100 mL.There was no intraoperative complication.The distances from tumor to proximal margin and distal margin were 5 cm and 6 cm.Number of lymph node dissected and length of abdominal incision were 51 and 3 cm.Time of gastric tube removal,time for out-of-bed activity,time of gastrointestinal function recovery,time of drainage tube removal and postoperative pain score were 17 hours,24 hours,36 hours,36 hours and 3,respectively.Patient took a little fluid diet after gastric tube removal.There was no occurrence of postoperative complication.Results of pathological examination showed that tumor invaded deep muscular layer,with 2 positive lymph nodes in No.3 and negative proximal and distal margins.Pathological staging was pT2N1M0 (Ⅱa staging).Duration of hospital stay was 6 days.(2) Follow-up and patients' survival:patient was followed up for 1 month,with a good survival.Conclusion The single-port Da Vinci robotic surgical system is safe and feasible in the radical gastrectomy of gastric cancer,with good short-term outcomes.

Objective To explore the safety and feasibility of vagus nerve-preserving Da Vinci robotassisted radical gastrectomy for gastric cancer.Methods The retrospective cross-sectional study was conducted.The clinicopathological data of 12 gastric cancer patients who underwent vagus nerve-preserving Da Vinci robotassisted radical gastrectomy at the Southwest Hospital of the Third Military Medical University from January 2015 to November 2016 were collected.All patients underwent vagus nerve-preserving Da Vinci robot-assisted radical gastrectomy for gastric cancer.During operation,lymph node dissection of the pyloric region,the right side of the cardia and the superior margin of the pancreas were noticed,and other surgical procedures were the same as the traditional Da Vinci robot-assisted radical gastrectomy.Observation indicators:(1) intra-and post-operative situations:surgical methods,digestive tract reconstruction,operation time,volume of intraoperative blood loss,number of lymph node dissected,results of postoperative pathological examination,recovery time of gastrointestinal function,time for liquid diet intake,duration of postoperative hospital stay,short-term surgery-related complications (postoperative bleeding,anastomotic fistula,obstruction and intra-abdominal infection);(2)follow-up situations:postoperative long-term complications (gastric retention,alkaline reflux gastritis,dumping syndrome,gallbladder disease and cholelithiasis),postoperative quality of life (diet,upper abdominal discomfort,nausea,vomiting and diarrhea),postoperative nutritional status [body weight,hemoglobin (Hb),total protein (TP),albumin (Alb)] and tumor recurrence.Follow-up using telephone interview and outpatient examination was performed up to December 2016.Telephone interview included detecting diet of patients,digestive tract symptoms and body weight.Routine blood test,liver and kidney functions,tumor markers,chest X-ray,abdominal computed tomography (CT) or color Doppler ultrasound and gastroscopy of outpatient examinations were performed to detect tumor recurrence and metastasis.Measurement data with normal distribution were represented as x±s and measurement data with skewed distribution were described as M (range).Results (1) Intra-and post-operative situations:all the 12 patients underwent successful vagus nerve-preserving Da Vinci robot-assisted radical gastrectomy for gastric cancer,without conversion to laparoscopic surgery or open surgery,including 2 patients with D1 lymphadenectomy,2 patients with extended D1 lymphadenectomy and 8 patients with D2 lymphadenectomy.Five and 7 patients underwent respectively Billroth Ⅰ anastomosis and Billroth Ⅱ anastomosis of digestive tract reconstruction.Operation time,volume of intraoperative blood loss and number of lymph node dissected of 12 patients were (247± 34) minutes,(94 ± 23) mL and 27 ± 7,respectively.Results of postoperative pathological examination showed that distal and proximal surgical margins of 12 patients were negative and achieved R0 resection;326 lymph nodes were dissected,6 patients didn't have lymph node metastasis and 18 positive lymph nodes were detected in 6 patients.Recovery time of gastrointestinal function,time for liquid diet intake and duration of postoperative hospital stay in 12 patients were (57±14)hours,(64± 14)hours and (7.3±0.9)days,respectively.There was no occurrence of short-term surgery-related complications.(2) Follow-up situations:12 patients were followed up by telephone interview (10 receiving outpatient exaninations) for 9 months (range,1-20 months).Of 12 patients with long-term complications,2 had loss of appetite,1 had diarrhea,without occurrence of cholelithiasis,cholecystitis,gastric retention and dumping syndrome.Of 10 patients receiving outpatient examinations,body weight,Hb,TP and Alb were (56± 12) kg,(126± 10) g/L,(69.9±5.1) g/L,(43.2±3.3)g/L at 1 month postoperatively and (52±13)kg,(126±10)g/L,(72.1±2.4)g/L,(45.2±1.6)g/L at 3 months postoperatively,respectively,with negative carcinoembryonic antigen.There was no tumor recurrence and metastasis in 12 patients.Conclusion Vagus nerve-preserving Da Vinci robot-assisted radical gastrectomy is safe and feasible for gastric cancer,which has not affected the lymph node dissection and incidence of surgeryrelated complications,and it also can improve the postoperative quality of life and maintain good nutritional status.

Objective:To explore the torque effect of controlling root auxiliary arch on the straight wire appliance on maxillary anterior teeth.Methods:22 patients with class Ⅱ1 extraction treatment,treated with straightwire appliance,at the detailing treatment stage were treated with controlling root auxiliary arch over the erect or introverted maxillary incisors for positive torque.The main arch wire of 0.46 mm ×0.64 mm stainless steel edge wire was used in 14 cases,the main arch wire of 0.46 mm stainless steel round wire was used in 8 cases.Cephalometric results before and after maxillary incisor torque were analyzed by t test.Results:After maxillary incisor torque in the 22 cases 1-SN and UIa-NA value increased(P ＜0.01),positive torque was achieved by controlling root auxiliary arch on the upper incisors;the round wire maxillary incisor torque worked faster than the edge wire(P ＜0.05).Conclusion:At the detailing stage of treatment straight wire appliance on front teeth,controlling root auxiliary arch is simple and effective in the treatment of exces-sive erect or lingual inclination of maxillary incisor.

Objective:To assess the guidance of 3D reconstruction in the surgical and orthodontic management of maxillary palatal impacted canines with cone-beam computed tomography (CBCT).Methods:22 adolescent patients with 26 impacted maxillary conines were examined by CBCT.CBCT 3D reconstruction was used to observe the impaction of the canines.Measurements were taken to evaluate spatial relationship between the canine and adjacent structures and resorption of neighboring incisor roots.Results:CBCT was effective to localize the impacted canines.All of the maxillary palatal impacted canines inclinated mesially,angles of impacted ca-nines to occlusal plane were 61.1°±18.1°,there were 8,5,3 and 10 impacted canines found in classⅠ,Ⅱ,Ⅲ and Ⅳ mesial mal-position respectively.3 adjacent lateral incisors and 2 central incisors were extracted because of severely root resorption.Normal occlu-sion was achieved for 26 impacted canines by the traction of the canines into dental arch and reaching the occlusal plane.Conclusion:CBCT can spatially show the palatal impaction of maxillary canines and the relationship to adjacent tooth,can guide the treatment plan and traction direction,therefore increase therapeutic effect.