Objective To explore the reliability, advantages and precautions of trans-umbilical single site double-ports laparoscopy hernia sac high ligation in children. Methods Retrospective analysis of the clinical data of 102 patients of trans-umbilical single site double-ports laparoscopy hernia sac high ligation from April 2015 to June 2016, then summarize the treatment process, method and experience. Results All 102 cases of children with inguinal hernia, 84 cases of unilateral, bilateral in 18 cases. Unilateral cases, found in 24 cases of lateral occult hernia. Operation time: one side (16.17 ± 8.23) min, bilateral (23.68 ± 9.72) min. All the patients were discharged after 1 d, and the incision was beautiful. There was no swelling in the scrotum or labia, no hematoma, no adhesive intestinal obstruction, and followed up from 6~20 months without recurrence. Conclusion It is safe, reliable and effective to treat inguinal hernia in children with trans-umbilical single site double-ports laparoscopy hernia sac high ligation. It has advantages such as beautiful incision, small trauma, quick recovery, low requirements on technology and equipment, easy to grasp.

Objective To compare the efficacy of acrossing the injured vertebra percutaneous pedicle screw fixation and traditional open surgery for Magerl A thoracolumbar fractures.Methods Retrospective analysis 56 patients with single segmental Magerl A thoracolumbar fractures without neurological symptoms were stabilized,including percutaneous fixation in 26 cases and open fixation in 30 cases.The operation time,intraoperative,blood loss,incision length,sagittal Cobb angle,height of injured vertebral,VAS,ODI,were compared between 2 groups.Results The precutaneous group less surgical blood loss,incision length and postoperative go to the fields time than the open group (P ＜ 0.05).There were improvements in Cobb angle and anterior height in two groups (P ＜ 0.05).The precutaneous group had lower VAS and ODI scores postoperation (P ＜ 0.05).The fracture vertebral front height and Cobb angle had significantly loss at final follow up than on the third day postoperation (P ＜ 0.05).Conclusions The percutaneous pedicle screw fixation can achieve similar effect in the treatment of Magerl A thoracolumbar fractures without neurological symptoms than open surgery,with less iatrogenic injury,less intraoperative blood loss and quick recovery for patients.

In this study, a spectrophotometric detection method for diethylstilbestrol (DES) was proposed by reducing silver nitrate (AgNO3) to obtain silver nanoparticles (AgNPs) in the medium of ammonia and sodium hydroxide. It was found that the resulting AgNPs have plasmon resonance absorption (PRA) characteristic at 415 nm, and the PRA is proportional to the increase of DES concentration in the range of 4.0×10-8-1.0×10-5M with the detection limit (3σ) of 1.2×10-7M. Most of the coexisting substances at high concentrations did not affect the detection of real samples, such as tablets. The recovery was in the range of 96.01%-107.41% and the RSD was lower than 4.7%. This method can be successfully applied to control preparation quality of DES.

Objective To analyze the different procedures and their clinical effects on treatment for pan-creatic pseudocyst( PPC) .Methods The management and outcome of 78 patients with PPC from Jan.2002 to Jun.2012 were retrospectively analyzed.Results 20 patients underwent conservative treatment and the pseudo-cysts absorbed spontaneously during follow up.Invasive procedures were performed in 58 cases, including percu-taneous catheter drainage in 3 cases with 1 postoperative pancreatic leakage and 1 postoperative pancreatic ab-scess;PPC external drainage in 5 cases with 2 postoperative pancreatic leakage and 1 postoperative bleeding;pancreatic pseudocyst stomach anastomosis in 15 cases with 1 postoperative gastrointestinal bleeding;Roux-en-Y cystjejunostomy in 29 cases with 2 gastrointestinal bleeding;cystduodenostomy in 2 cases;pancreatic pseudocyst excision in 2 cases with 1 postoperative pancreatic leakage; and laparoscopic cystogastrostomy in 2 cases.Con-clusions At present, there are various treatment options for pancreatic pseudocyst and it is necessary to choose treatment strategy according to patient's condition.Internal drainage is still the primary option of surgical proce-dures in treatment for pancreatic pseudocyst.

By discussing several measures such as perfecting the rules, formulating the quality standard of thesis and design, strengthening the guidance and monitoring, establishing the tutor team and the incentive mechanism etc., this article explores the methods to improve the quality of graduation thesis and design in university.

Giving courses of "Tea Nutrition and Health" in Guangdong Pharmaceutical University,popularizing tea culture will play a role in promoting Guangdong tea industry and tea economics,while tea culture will also have an important impact on social harmony,national unity. In this paper,the author discusses the condition of students'elective course,course content,teaching reform and innovation,problems and improvement measures,etc. to make a few practices and experiences.

Heavy chain antibodies (HcAb) without light chains are naturally produced by camelids.The single domain antigen-binding fragment of HcAb is referred to as VHH or nanobody (Nb),which is the smallest antigen-binding entity at present.Several characteristics such as low molecular weight,high stability,and low immunogenicity make the use of nanobodies superior to the conventional antibodies.Currently,nanobodies are highly valuable antibodies for various applications,including fundamental research,diagnostics,and therapeutics.A variety of nanobodies are investigated in clinical researches.The recent progresses of heterologous expression of nanobodies in seven expression systems,including Gram-negative and positive bacteria,yeasts,filamentous fungi,insect cells,mammalian cells and plant cells were focused on,and the expression systems,hosts,characteristics of vectors,construction of vectors and yield of nanobodies were summarized.The strategies to increase the yield of nanobodies are discussed from molecular level,expression level and rational design.

Objective To compare laparoscopic appendectomy (LA) with open appendectomy (OA) in the treatment of appendicitis complicating gangrene,perforation and abscess in children.Methods This study included 614 consecutively admitted patients with acute complicated appendicitis undergoing laparoscopic (267 cases) or open (347 cases) appendectomy.Clinical outcomes were compared between the 2 groups in relation to operative time,length of hospital stay,postoperative complications and in hospital cost. Results There was no mortality.Conversion to open surgery was necessary in 7 patients in LA group.Laparoscopic appendectomy was associated with a shorter hospital stay (4.6 d vs.8.1 d,P =0.00),lower incidence of wound infection(5.3％ vs.12.8％,P =0.03),less bowel obstruction(5.0％vs.10.0％,P =0.04) and nosocomial infection (9.7％ vs.18.3％,P =0.04).Intra-abdominal abscess formation was significantly higher after laparoscopic surgery (4.1％ vs.1.1％,P =0.04 ).The cost of treatment and operative time were higher in the laparoscopic group than in open appendectomy,however,there was no statistically significant difference. Conclusions Laparoscopic technique is a safe and clinically beneficial operative procedure for complicated appendicitis in children with short hospital stay,early recovery,good cosmetic appearance,and low complication rate,except for a higher incidence of intraabdominal abscess.

ObjectiveTo understand anorectal diseases in health in the crowd incidence,clinical and prevention work for anus bowel division provides scientific basis.Methods7102 cases of physical examination for the anus bowel specialized examination,on examination results,statistics,and with the anus bowel disease census results were compared and analyzed.Results7102 cases were detected in anus bowel disease was 4758 cases,the total incidence of 67.0％,including 4119 cases of hemorrhoids,1138 cases of anal papilla,227 cases of rectal polyp,201 cases of anal fissure,113 cases of perianal skin disease,94 cases of anal fistula and one case with rectal cancer.male anus bowel disease(62.3％ ) were less than women(73.2％ ) ( x2 =93.4,P ＜ 0.01 ),young group of incidence of a disease(59.0％ ) in the lower than the elderly group(77.7％ ) ( x2 =274.4,P ＜ 0.01 ).ConclusionAnorectal diseases in normal higher incidence in the crowd,carry out standardized anus bowel disease census of disease prevention and cure had relatively positive significance.

Angiotensin-converting enzyme (ACE) gene is one of major candidate genes with genetic susceptibility to stroke. However, its correlation with stroke remains controversial. The relationship between gene polymorphism and stroke also cannot be determined. A specific branch in the ACE phylogenic tree may replace the insertion/deletion polymorphic site as a risk marker of stroke for association study.