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Article in Chinese | WPRIM | ID: wpr-700041


Objective To measure and analyze the set-up errors of postoperative intensity modulated radiation therapy of rectal cancer (PIMRTRC)with electronic portal imaging device (EPID),and to provide theoretical foundation for clinical realizing of accurate PIMRTRC.Methods Totally 30 patients after rectal carcinoma resection underwent sagittal and coronal photographing with EPID before the first time of therapy and one time per week during the treatment course.The obtained images were compared with DRR images in treatment planning system to get the setup errors at X(left-right),Y(head-foot) and Z (front-back)directions,and the extending margins of CTV and PTV in postoperative intensity modulated radiation therapy were calculated.EPID was used for setup correction,and SPSS 19.0 was involved in to execute statistical analysis. Results The linear displacement had the mean values plus/minus standard deviation at X, Y and Z directions before and after error correction being(-1.392 4±3.670 9)mm vs(-0.816 5±2.670 5)mm,(0.969 7±4.076 1)mm vs(0.418 2±2.911 4)mm, and(0.704 4±1.805 6)mm vs(0.471 7±1.641 3)mm respectively;the extending margin had the values being 7 mm vs 5 mm, 6 mm vs 4 mm, and 4 mm vs 3 mm respectively.Conclusion EPID ensures the correctness and accuracy in postoperative intensity modulated radiotherapy of rectal cancer,which makes target area gifted with maximized dose,the surrounding tissue and organs at risk protected adequately,and provides theoretical support for extending CTV margin.[Chinese Medical Equip-ment Journal,2018,39(5):59-63]

Article in Chinese | WPRIM | ID: wpr-338214


Neoflavonoids are a kind of characteristic components in the Dalbergia genus. Based on the previous researches, 59 neoflavonoids have been obtained from the Dalbergia genus. According to their molecular skeleton, the neoflavonoids can be divided intodalbergiphenols, dalbergiones, dalbergins, benzophenones and other types. Modern research shows that neoflavonoids displayed a variety of pharmacological activities, such as anti-osteoporosis, anti-inflammatory, antitumor, anti-androgen, anti-allergic, antioxidation etc. This paper reviewed neoflavonoids and their pharmacological functions, which could provide the valuable reference for comprehensive utilization and new drug development in the Dalbergia genus.

International Journal of Surgery ; (12): 181-184,封3, 2014.
Article in Chinese | WPRIM | ID: wpr-572451


Objective To investigate the expression and significance of P-glycoprotein in triple negative breast cancer (TNBC).Methods One hundred and seventy-one cases of breast invasive ductal carcinoma in our hospital were retrospectively analyzed.According to the expression of ER,PR,Her2,we categorized those paitents into triple negative breast cancer group (58 cases) and non triple negative breast cancer group (113 cases).The different expression of P-glycoprotein was detected by immunohistochemieal technology in two groups.We analyzed the relationship between the expression of P-glycoprotein and clinical and pathological features in TNBC,and investigated the effect of P-gp on the rate of recurrence and metastasis in 3 years.Results (1) The expression of P-gp in TN BC was significantly higher than that of NTNBC (53.45% vs 37.17%) (P < 0.05).(2) The expression of P-gp in TNBC was associated with TNM stage,histological grade,lymph node status and vascular invasion (P < 0.05),but not with age and size of the tumor (P > 0.05).(3) The rate of recurrence and metastasis in positive expression of P-gp in TNBC was 58.06%,which was significantly higher than negative expression of P-gp in TNBC (44.44%),but no statistically significant was found(P > 0.05).Survival analysis showed that P-glycoprotein expression had no relationshiop to 3-year cumulative survival rate (P =0.161 > 0.05).Conclusions The positive expression of P-gp in TNBC is associated with drug resistance and metastasis,but has no obvious significance to recurrence and metastasis,so as to 3-year cumulative survival rate.

International Journal of Surgery ; (12): 150-153, 2013.
Article in Chinese | WPRIM | ID: wpr-435519


Objective To evaluate the feasibility of intra-operative ultrasound guide in breast conservative-surgery and its effect on positive margin rate and breast tissue volume.Methods Fifty-five cases of invasive breast cancer staged T1-2N0-1 were randomly assigned to palpation-guided group(control group) 26 cases and ultrasound-guided group(experiment group) 29 cases.Before and during operation,high-frequency ultrasound was used to guide the resection of breast cancer with 1 cm margin in experiment group.The resection margin positive rate deteced by tissue section frozen biopsy and resected breast tissue volume were compared between experiment and control group.Results The clinicopathologic features were accordant between two groups.The margin positive rate and near-margin positive rate in experiment group were 0 and 3.45% respectively,slightly lower than that of control group 3.85% and 15.38%,but with no statistical significance (P > 0.05).The same situation occurred at the re-exision rate.The resected breast tissue volume in experiment group (32.40 ± 10.93) cm3 was lower than that of control group (55.11 ± 12.88) cm3,and with statistical significance (P < 0.01).Conclusions Intra-operative ultrasound guide could reduce the margin positive rate and unnecessary resected brcast tissue volume in breast conservative-surgery,and improve cosmetic effect.

International Journal of Surgery ; (12): 839-842, 2012.
Article in Chinese | WPRIM | ID: wpr-430593


Macrophages,as an important member of innate immune system,constitute a major component of the microenvironment of tumours,and play an important role in the occurrence and development of tumor.According to particular phenotypes and functions,macrophages can be divided into M1 macrophages and M2 macrophages.In the research of breast cancer,lung cancer,gynecological malignancies,researchers have found that tumor-associated macrophage has the similar phenotype and function of M2 macrophages.Tumor-associated macrophage can promote the formation of new blood vessels and lymphatic vessels in tumor tissue,thus contributing to the occurrence and development of tumor.The relation between tumor-associated macrophage and poor prognosis was also be found.The tumor microenvironment can affect the phenotype and function of macrophages,such as TGF,IL-10 and PGE-2.This paper reviewed the role and mechanism of macrophages in the tumorigenesis.