BACKGROUND:Tumor markers are of great significance in early diagnosis of cancer, screening of high risk
group with cancer, differential diagnosis between benign and malignant tumors, judgment of cancer progression, evaluation of cancer therapeutic effect and prediction of cancer recurrence and prognosis.
OBJECTIVE:To realize the importance of tumor marker for cancer early diagnosis by introducing the working principle and clinical application of silicon nanowires biosensor in detecting tumor markers.
METHODS:The first author searched PubMed, CNKI and Google Scholar Databases to retrieve relevant articles about tumor marker, working principle and application of silicon nanowires biosensor published from 2003 to 2013. RESULTS AND CONCLUSION:Silicon nanowires biosensors with high sensitivity and without secondary marks show a good application prospect in detecting tumor markers. They have been used to detect tumor markers for prostate cancer, breast cancer, tumor markers of colorectal cancer, and primary liver cancer, and achieved an ideal limit of detection. However, due to the influence of debye length, most of detections can only be performed in the standard solution. There is a lack of the serum data of cancer patients.

Congresses as Topic ; Humans ; Thyroid Neoplasms ; surgery

Carbamates ; analysis ; Fruit ; chemistry ; Organophosphorus Compounds ; analysis ; Pesticide Residues ; analysis ; Vegetables ; chemistry

Objective To investigate the changes of diamine oxidase(DAO) and endotoxin(ET) during the treatment of systemic inflammatory response syndrome with human growth hormone and the relationship between human growth hormone and intestinal mucosal barrier injury. Methods One hundred and forty six patients with systemic inflammatory response syndrome were randomly divided into operative group and non operative group, which were again randomly divided into the study group and control group.Plasma concentration of DAO and ET were determined before the treatment and 1 week after the treatment.Results Plasma concentration of DAO and ET in study group decreased after treatment with significant difference ( P

Objective To construct A2 gene expression vector in Q? phage by gene recombination technology, and then analyze its physiological activities. Methods Amplified A2 gene in Q? genome by PCR, cloned it into pBAD-24 expression vector to construct pBAD A2 recombinant plasmid. The recombinant plasmid was identified by restrictive enzymes digestion and DNA sequencing, then to be transfected into host cell JM109. After induced by Arabinose, the expression level of A2 was detected by SDS-PAGE. The growth curve of E.coli was obtained by phototurbidometry to test the bacteriolysis activity of pBADA2 in various host cells. Results After certified by PCR screening, DNA sequencing and restrictive enzymes digestion, the expression vector of pBADA2 was successfully constructed. The gene expression level is high in JM109 and related with Arabinose concentration, which reach its peak when Arabinose is 0.2%. OD660 value demonstrates that pBADA2 has the function of bacteriolysis, which could dissolve JM109、HB101 and 594 in E.coli rapidly, but not BE110. Conclusion The highly expressed vector pBADA2 was successfully constructed. The protein expressed has the ideal function of bacteriolysis. All of these provide theoretical and practical bases for developing new anti-bacteria drugs.

To elucidate the molecular mechanism of resveratrol against leukemia both in vitro and in vivo.

Abstract?AlM: To evaluate the efficacy of intravitreal injection with Ranibizumab combined with sub-Tenon injection with Triamcinolone acetonide ( TA ) for macular edema ( ME) due to central retinal venous occlusions ( CRVO) .?METHODS:Forty-six patients (46 eyes) were diagnosed ischemic CRVO with significant macular edema by fundus fluorescence-angiography ( FFA ) and optical coherence tomography ( OCT ) . All the patients had panretinal photocoagulation ( PRP ) , a week after the four times therapies. Twenty-three patients ( 23 eyes ) in group A were randomly chosen to receive intravitreal injection with ranibizumab ( lVR ) , another 23 patients ( 23 eyes ) in group B to treat with both lVR and sub-Tenon injection with TA ( PSTT ) . There was no significant difference on macular edema and best corrected visual activity ( BCVA) between the two groups. The changes in BCVA and central macular thickness ( CMT) before and 1wk; 1, 3, 6mo after treatments were analyzed.?RESULTS: One week after the treatment: the BCVA increased while the CMT decreased compared with that of pretreatment in groups A and B (P<0. 05). BCVA and CMT changes between two groups were statistically significant differences (P<0. 05). One month and three months after the treatment:the BCVA increased while the CMT decreased compared with that of pretreatment in group A and B (P<0. 05), the difference was significant between two groups ( P< 0. 05 ). Six month after the treatment:the BCVA increased while the CMT decreased compared with that of pretreatment in groups A and B. Compare BCVA difference between the groups was statistically significant change (P<0. 05), CMT difference was not statistically significant (P>0. 05).?CONCLUSlON:Not only lVR can decrease ME caused by CRVO and increase the BCVA, but also lVR combined with PSTT can. But combined therapies can be more rapidly and have more positive effect on decreasing the ME and protecting the visual function.

To present a data processing method of traditional Chinese medicine based on Apriori algorithm to improve the efficiency of data mining and ensure the accuracy of the knowledge or conclusion in the data mining. The importance of data preprocessing in data mining was analyzed, along with the characteristics of TCM data and the requirements of Apriori algorithm for mining data. Some new functions were formed with considerations on the exam-ples. The data preprocessing was explored from the aspects of terminology standardization, eliminating unqualified data, structured prescription data, data sorting and etc. The new functions were simple and easy to operate, and the preprocessed data made the efficiency of TCM data mining enhanced greatly. The preprocessing method based on Apriori algorithm for TCM data facilities the TCM data mining.

Objective To understand the relationship between Demodex and bacteria infection in rosacea (brandy nose), and to find effective means for the treatment. MethodsCellophane tape was used to detect Demodex on the nasolabial grooves and the face; sebum and tissue on face was scraped and cultured to examine bacteria under microscope. The hospital_made anti_rosacea lotion was used on the affected part two times a day for 7 days. Results It was found that 193 (74^2%) of 260 cases with rosacea were infected by Demodex and 209 (80^4%) of the patients were infected by bacteria. The overall effective rate of the treatment for rosacea was 73^5%. Conclusion Bacteria infection in rosacea is an important factor inducing rosacea. The curative effect of the anti_rosacea lotion is good.

Objective To investigate the association of human papilloma virus (HPV) typing and p53 expression with radiosensitivity in patients with cervical cancer.Methods A total of 80 patients with cervical cancer from 2014 to 2016 were enrolled,and among these patients,40 had stage Ⅰ B+ Ⅱ A disease and 40 had stage Ⅱ B +ⅢA disease.HPV genotype was identified and p53 expression was measured.All the patients underwent external and internal pelvic irradiation alone,and the correlation between short-term therapeutic effect and HPV typing/p53 expression was analyzed.The chi-square test or the Fisher's exact test was used for statistical analysis,and Spearman rank correlation analysis was also performed.Results The radiotherapy-insensitive (stable disease+progressive disease) group had higher p53 positive rates than the radiotherapy-sensitive (complete response+partial response) group (stage Ⅰ B+ Ⅱ:100％ vs.80.0％,P=0.044;stage Ⅱ B+ⅢA:100％ vs.90.0％,P=0.013).The expression of p53 was negatively correlated with radiosensitivity (r =-0.427,P =0.000).In the radiotherapy-insensitive group of patients with stage I B + Ⅱ and Ⅱ B +Ⅲ A,the rate of HPV multiple infections was higher than that of single subtype infection (65.0％/95.0％ vs.35.0％/5.0％,P=0.004 and 0.003),while in the radiotherapy-sensitive group,the rate of single subtype infection was higher than that of multiple infections (85.0％/60.0％ vs.15.0％/40.0％,P=0.004 and 0.003).The highest detection rate of HPV16 was 66.3％ in all patients,and the highest detection rate of HPV18 was 60.0％ in the radiotherapy-insensitive group.Conclusions High expression of p53 is associated with radioresistance in patients with cervical cancer.Patients with HPV muhiple infections have poor radiosensitivity,and HPV16 is the most common subtype in dual infection.Among patients who do not achieve remission after radiotherapy,HPV multiple infections with HPV18 as the main pathogen has the highest detection rate.