Relationship between serum claudin-1 level and papillary thyroid carcinoma / 中华内分泌代谢杂志

Objective:To analyze the correlation between serum claudin-1(Cla-1) level and the risk of papillary thyroid carcinoma(PTC) in patients with thyroid nodules.Methods:The clinical data of 345 patients with thyroid nodules were retrospectively analyzed. According to the pathological results, they were divided into PTC group and benign thyroid nodule(BTN) group. The difference of serum Cla-1 level between 2 groups and its correlation with the risk of PTC were analyzed.Results:In groups of PTC( n=225) and BTN( n=120), the median value of serum Cla-1 level was 14.03(10.30, 20.40) ng/mL. The differences in the median value[17.90(14.00, 22.93)ng/mL vs 9.40(8.15, 11.20) ng/mL] of serum Cla-1 level in the PTC and BTN were statistically significant by Wilcoxon signed-rank test. The prevalence of PTC in thyroid nodules increased gradually with increasing of serum Cla-1 level. Receiver operated characteristic curve analysis showed that the best diagnostic cut-off value of the PTC was 13.02 ng/ml of which the sensitivity was 81.8%, the specificity was 89.2%, and the area under curve(AUC) was the largest(AUC=0.944, P<0.01, 95% CI 0.922-0.965). Logistic regression analysis showed that elevated serum Cla-1 level increased the risk of PTC, and it was statistically significant( OR=4.334, 95% CI 1.662-11.303, P=0.003). There was a significant correlation among the serum Cla-1 level and gender, age, location of involvement, number and diameter of cancer nodules, extracapsular invasion of thyroid, lymph node metastasis, tumor stage and combined with Hashimoto′s thyroiditis( P<0.01). Conclusion:The serum level of Cla-1 may be one of risk factors to predict PTC, and it is related to the total amount of PTC tumor cells in vivo, but it was not related to the aggressive behavior of tumor.

Clinical observation of adjustable external fixator combined with limited internal fixation for type C distal radius fractures / 临床外科杂志

Objective To investigate the clinical efficacy of adjustable external fixaor combined with limited internal fixation for type C distal radius fractures. Methods A total of 22 patients with type C distal radius fractures were treated with adjustable external fixator combined with limited internal fixation from October 2013 to January 2016. Accoiding to AO/ASIF classification, there were 6 cases defined as Cl, 7 cases as 02 and 9 cases as C3. All cases were followed up completely. The clinical efficacy was evaluated based on the wrist join function and X-ray materials. Results They were followed up from 6 month to 18 month(mean 11 months). It showed that all the fractures were healed within 3 months according to X-ray examination. According to Garland-werley evaluation standard, 15 cases were excellent, 5 cases were good and 2 cases were fair. The excellent and good rate was 90. 91％. Condusion For type C distal radius fractures, the method of adjustable external fìxaor combined with limited internal fixation can recover and maintain radius height, volar tilt angle and ulnar inclination angle effectively. It can provide satisfactory wrist join function.

Expressions of CA19-9, CA15-3 and CA125 and their significance in papillary thyroid carcinoma / 天津医药

Objective To investigate the expressions of carbohydrate antigen 19-9(CA19-9), carbohydrate antigen 15-3(CA15-3) and carbohydrate antigen 125(CA125) and their clinical significance in papillary thyroid carcinoma (PTC). Methods The expressions of CA19-9, CA15-3 and CA125 were detected by immunohistochemical MaxVision method in 80 cases of PTC and 80 cases of benign thyroid lesions (BTL), including 34 cases of nodular goiter, 26 cases of Hashimoto's thyroiditis and 20 cases of follicular adenoma. The relationship between expressions of CA19-9, CA15-3 and CA125 and the clinical pathological characteristics were analyzed. Results The expression rates of CA19-9, CA15-3 and CA125 in 80 cases of PTC were 85%, 100%and 43.8%respectively, compared with BTL, the difference was statistically significant (P 0.05). The sensitivity of CA19-9, CA15-3 and CA125 in the differential diagnosis of PTC and BTL were 85%, 100% and 43.8% respectively, and the specificity were 91.3%, 36.3%and 91.3%, respectively. Conclusion The expressions of CA19-9, CA153 and CA125 are helpful for the differential diagnosis of PTC and BTL.

Expression of Cyclin D1 and BRAF (V600 E) mutation in papillary thyroid carcinoma and their correlation with clinicopathologic features / 临床与实验病理学杂志

Purpose To investigate the correlation of the expression of Cyclin D1 and BRAF ( V600E) mutation in papillary thyroid carcinoma ( PTC) and their clinical significance, and to analyze their role in the pathogenesis of PTC. Methods The expression of CK34βE12 and MC protein was detected by immunohistochemical EnVision method in 52 cases of PTC and 52 cases of thyroid benign lesions (25 cases of nodular goiters, 15 cases of Hashimoto’s thyroiditis, 12 cases of follicular adenoma), and the mutation status of BRAF gene protein in above specimens were detected by polymerase chain reaction and DNA sequencing. Expression of Cyclin D1 and BRAF (V600E) mutation in papillary thyroid carcinoma and their correlation clinicopathologic features were also analyzed. Results The positive rate of Cyclin D1 in 88 cases of PTC was 84. 6%,and the immunoreactivity score (4. 6 ± 2. 4), compared with thyroid be-nign lesions (1. 3 ± 1. 6), was statistically significant difference (t=8. 525, P<0. 01). Expression of Cyclin D1 was closely related with lymph node metastasis, capsular invasion, tumor stage Ⅲ+Ⅳ and BRAF (V600E) mutation (P<0. 05), but not related with age, gender, number and diameter of tumor nodules. In 52 cases of PTC BRAF gene mutation rate was 63. 5%, but in thyroid benign lesions mutation rate was 0, with significant difference (P<0. 01). The BRAF mutation is closely related with lymph node metastasis, capsular invasion and tumor stage Ⅲ+Ⅳ(P<0. 05), but not related with age, gender, number and diameter of tumor nodules. The expression of Cyclin D1 in BRAF (V600E) mutation group was stronger, the positive expression rate was significantly higher than that of wild group (100% vs 57. 9%), and expression of the mean score was higher than that of the wild group (5. 7 ± 1. 6 vs 4. 0 ± 2. 5);the comparison between the two groups showed statistical difference (t=2. 652, P<0. 05). Conclusions The expression of Cyclin D1 and BRAF (V600E) mutation are positively related, which are also closely related with the occurrence and development of PTC, and can be used as an index to predict the invasion and metastasis in PTC.

A comparison of attention between outstanding young female soccer athletes and ordinary female middle-school students:Constructing a distinction equation based on parameter differences / 中国组织工程研究

AIM:To compare the attention ability characteristics between the elite young female soccer players and ordinary female middle-school students,and analyze attention characteristics of the elite young female soccer players at different positions,so as to establish the distinction model for them.METHODS:The experiment was carried out in Soccer School of Shandong Province in October 2005 and Jining Institute Attached Middle School in March 2006.Sixty-four second-level or above outstanding young female soccer athletes were selected including 18 forward,20 halfback and 26 back persons.Meanwhile,80 ordinary female middle-school students served as controls.Using the Athletics Psychology Ability and Condition Diagnosis Test Software and WT-attention test software(1.0 version) developed by the Sports Research Institute of National Sports Bureau,the detection on the attention stability,attention assignment,attention shift,attention span and attention was carried out.The data were analyzed by normal distribution,T-test,and distinction analysis to establish the distinction equation for the attention characteristics of outstanding young female soccer athletes.RESULTS:144 subjects were all involved in the result analysis.①The attention ability of outstanding young female soccer athletes was significantly superior to that of the ordinary female middle-school student(P

Image reconstruction in electrical impedance tomography based on genetic algorithm / 生物医学工程学杂志

Image reconstruction in electrical impedance tomography (EIT) is a highly ill-posed, non-linear inverse problem. The modified Newton-Raphson (MNR) iteration algorithm is deduced from the strictest theoretic analysis. It is an optimization algorithm based on minimizing the object function. The MNR algorithm with regularization technique is usually not stable, due to the serious image reconstruction model error and measurement noise. So the reconstruction precision is not high when used in static EIT. A new static image reconstruction method for EIT based on genetic algorithm (GA-EIT) is proposed in this paper. The experimental results indicate that the performance (including stability, the precision and space resolution in reconstructing the static EIT image) of the GA-EIT algorithm is better than that of the MNR algorithm.