Objective To discuss the safety and feasibility of single-incision laparoscopic appendectomy ( SILA ) . Methods A retrospective analysis was made on clinical data of patients diagnosed as having appendicitis by clinical manifestations , ultrasound or computer tomography at our department from June 2009 to December 2014.There were 189 cases of transumbilical SILA ( transumbilical group ) and 123 cases of traditional three-port laparoscopic appendectomy ( three-port group ) .Patients with incomplete records, combination with other surgery , pregnancy appendicitis , acute appendicitis over 72 hours were excluded .Intraoperative and postoperative data of two groups were compared . Results No conversion to open surgery was required in both groups .The operation time, postoperative exhaust time , and postoperative hospital stay had no significant differences between the transumbilical group and the three-port group [(45.5 ±12.7) min vs.(46.3 ±17.8) min, t=-0.461, P=0.650; (1.4 ±0.5) d vs.(1.5 ±0.6) d, t=-1.588, P=0.112;(3.8 ±1.6) d vs.(4.1 ±1.9) d, t=-1.554, P=0.121].The cosmetic scores at 3 months after surgery was higher in the transumbilical group than that in the three-port group [(4.5 ±0.6) points vs.(4.2 ±0.5) points, t=4.585, P=0.000].No significant differences were identified in the incidence of complications and pathological types between the two groups . Conclusion SILA is technically feasible and safe with better cosmetic effects .

Objective To investigate the effect of Ligu Capsules in preventing and treating menopausal osteoporosis in ovariectomized rats.Methods Rat models with osteoporosis were established by ovariectomy. Bone mineral density of femur,dry and wet bone weight and blood biochemical parameters were measured before and after treatment.Results Compared with the model group, Ligu Capsules increased femur bone mineral density,elevated the serum levels of Ca,P,Mg ,Zn and CT, decreased serum BGP level and hydroxyproline/creatinine(Hyp/Crea)ratio,increased dry weight, wet weight and ash weight of femur, as well as the bone length, bone volume, and bone diameter.Conclusion Ligu Capsules can prevent and treat osteoporosis in ovariectomized rats.

Objective To evaluate clinical significance of the CEA, CA19-9, CA242, AFP, CA724,SCC, TPA, TPS combined detection for the clinical diagnosis of gastrointestial cancer. Methods 373 cases of upper digestive tract malignant tumor patient and 50 cases of healthy serum sample were detected for eight markers, evaluating the relationship between the level of markers and illness. Results 8 marker diagnostic positive rates were: CEA 26.80 %, CA19-9 27.34 %, CA242 34.14 %, AFP 2.84 %, SCC 19.72 %, CA724 12.13 %, TPA 34.15 %, TPS 30.89 %. The total positive rate of joint detection of 8 markers was 89.05 %.Preoperative CEA, CA242, SCC-positive patients had a shorter survival time. CA242 and CA19-9 levels with upper gastrointestinal malignancies were positively correlated. Conclusion The combined detection of a number of markers in different pathological type and clinical staging is statistically significant, and the positive rate is much higher than any single marker test results. CA19-9 and CA242 may be the best combination of monitoring the disease. CA724, CA242 and SCC can be as adverse prognostic indicators for cardia, stomach,esophageal malignant tumors, respectively.

Objective To evaluate whether ultrasonographic features of thyroid nodules are associated with histological malignancy, and to set up helpful criteria in identifying those who should accept subsequent fine-needle aspiration biopsy (FNAB). Methods 146 thyroid nodules of 123 patients accepted ultrasonographic evaluation and FNAB. All patients but one with suspicious or malignant cytology were operated. Results Out of total 146 nodules, 43 were histologically malignant, 102 were cytologically benign, and 1 nodule with suspicious cytology was not followed. Hypoechoic pattern, blurred margins, irregular shape, microcalcification, and type Ⅲ vascularity were significantly more frequent in malignant than benign nodules (P ＜ 0. 05). No one of the ultrasonographic features could independently predict malignant nodules. A better compromise is probably to apply FNAB in nodules with at least one or two malignant ultrasonographic signs. Conclusion No single parameter could satisfactorily identify a subset of patients to be selectively examined by FNAB. A cost-effective approach to FNAB should depend on combination of specific ultrasonographic features.

Prognostic factors of differentiated thyroid carcinomas ( DTC ) were analyzed and the related literatures were systematically reviewed in order to justify the diagnostic and therapeutic modalities for improving the patient′s survival.150 patients ( female,n =113 ; male,n =37 ) with histopathologically diagnosed DTC,including papillary thyroid carcinoma ( n =131,87.3％ ) and follicular thyroid carcinoma ( n =19,12.7％ ),were postoperatively followed up and their clinical data were retrospectively reviewed.Patients were followed up for 4.15-31 years wherein 140 patients( 93.3％ ) survived but with relapse in 30 patients( 20.0％ ),and 10 patients( 6.7％ ) died.Surgical procedures consisted of near-total or subtotal thyroidectomy ( n =83,55.3％ ),partial thyroidectomy ( n =64,42.7％ ),and total thyroidectomy ( n =3,2.0％ ).Out of the patients receiving lymph node dissection ( n =63 ),45 patients( 71.4％ ) had detectable lymph node metastasis.Age of onset,tumor size at initial visit,and early metastasis showed the statistically significant difference between mortality group and survival group (P＜ 0.05 ),as well as between relapse group and relapse-free group( P＜0.05 ).Age of onset,tumor size at initial visit,and early metastasis are prognostic factors for DTC.

Objective To study the influence of CRT brightness on image reading. Methods Both physical testing and compared viewing were used in the study. (1) Setting the CRT brightness at high and low grade (the blank brightness of CRT was 112 cd/m 2 and 82 cd/m 2, respectively). (2) 21 films with the density ranging from 0.27 to 2.71 were digitized by a scanner and displayed on the CRT. The brightness of CRT that varied with film density was measured by a bright meter, then the relation chart between CRT brightness and the film density was drawn. (3) Thirteen films on which there were many small and low contrast signals were viewed on CRT by three doctors. The tested data were calculated by statistics (? 2 test, the difference was significantly marked when P 0.05), but the signals viewed in the lung were 87 and 29, and the difference was significantly marked (? 2=53.73, P

The circulating antigens of Schistosoma japonicum and the antibodies against the worm in the sera of patients were detected concurrently by Dot-ELISA.In 30 sera from patients with acute schistosomiasis, 51 sera from patients with chronic schistosomiasis and 30 sera from patients being treated by praziquantel 5=6 years ago, the positive rates of the circulating antigens were 86.7%, 78.4% and 23.3% respectively, but all negative in 30 sera from patients with clonorchiasis sinensis. One of the 40 sera from healthy individuals had a weak positive reaction. The positive rates of the antibodies in those acute, chronic and treated patients with schistosomiasis were 100.0%,96.1% and 30.0%; the mean titers of antibodies were 1 : 367.6, 1 : 181.7 and 1 : 9.8 respectively; Two sera from patients with clonorchiasis were positive. All of the healthy individuals were negative.The results indicaded that the circulating antigen was in accord with the antibodies in most sera from schistosomiasis patients.

Objective To discuss the preservation and clinical significance of petrosal vein in microsurgical operation of acoustic neuroma. Methods 147 patients with acoustic neuroma were operated, with internal decompression of the tumor firstly then dissected the tumor with surrounding structures, the petrosal vein were protected well in 143 cases and failed to protect in 4 cases. Results No hemorrhagic infarction in cerebellar was observed in 143 cases with intact petrosal vein. One case occurred with extensive cerebellar edema, which has gait disturbance after 18 months follow-up. The other three cases occurred with vein infarction and hemorrhagic edema after petrosal vein damage. One was dead and the other two were recovered well after decompression of posterior cranial fossa. One has no significant neurological deficit after 33 months follow-up, while the other has difficulty in line walking after 12 months follow-up. Conclusion Petrosal vein should be well protected in the operation of acoustic neuroma, the decompression of posterior cranial fossa should be considered if petrosal vein failed to protect.

Objective To explore the value of thyroid-stimulating antibody(TSAb) and degree of goiter in predicting the outcome of Graves'disease after antithyroid drug treatment. Methods Seventy-one patients with Graves'disease were given antithyroid drugs for (2. 8±1. 4)years and then followed up for(22±6.0)months.Finally,age,gender,thyroid function,TSAb and goiter size at the time of drug withdrawal were compared between the relapsed and relieved groups. TSAb was measured in all patients by using HEK-hTSHR cells. Results Eleven of 71 patients relapsed during the follow-up after drug withdrawal. The relapse rate (42. 9% ,6/14)in patients with positive TSAb was significantly higher than that (8.8%, 5/57) in patient with negative TSAb (X2 = 9.97, P<0.01). The relapse rates in patients with normal size thyroid, Ⅰ degree goiter,Ⅱ degree goiter were 6.25%, 12.2%,35.7% respectively. TSAb activity, positive rate and goiter size of the relapsed patients at the time of drug withdrawal were significantly higher than those of relieved patients (P<0.05 or P<0. 01). Conclusion TSAb activity and goiter size at the time of drug withdrawal are two effective prognostic markers of relapse in Graves' disease treated with antithyroid drugs.

Maize is one of the most important food crops. Rice black-streaked dwarf virus is a maize rough dwarf disease pathogen. The occurrence and transmission of maize rough dwarf disease brings great damage to maize production. The technology of using artificial miRNA to build antiviral plant has been proven effective in a variety of plants. However, such trials in maize have not been reported. We designed primers based on the sequence of maize zea-miR159a precursor and sequence of function protein genes and silencing RBSDV coding genes in RBSDV genome. We constructed amiRNA (artificial miRNA) gene for silencing RBSDV coding gene and gene silencing suppressor. We constructed pCAMBIA3301-121-amiRNA plant expression vector for transforming maize inbred lines Z31 by using agrobacterium mediated method. After molecular analysis of transgenic maize, homozygous lines with high miRNA expression were selected by molecular detection for a subsequent natural infection experiment. We studied the severity of maize rough dwarf disease according to a grading standard (grade 0 to 4). The experiment results showed that the disease resistance of transgenic homozygous maize with the anti-rough dwarf virus amiRNA vector was better than that of wild type. Among the transgenic maize, S6-miR159 transgenic maize had high disease resistance. It is feasible to create new maize variety by the use of artificial miRNA.
Disease Resistance ; genetics ; Gene Silencing ; Genetic Vectors ; MicroRNAs ; genetics ; Plant Diseases ; genetics ; virology ; Plants, Genetically Modified ; genetics ; Reoviridae ; pathogenicity ; Zea mays ; genetics