Objective To evaluate the cooperative effect of intraperitoneal adenoviral p53 gene therapy together with thymosin ?1 against peritoneal carcinomatosis. Methods KM mouse model bearing peritoneal carcinomatosis was established using H22 cell line. 48 hours after inoculation, adenoviral-mediated p53 gene was administrated intraperitoneally alone, or combined with thymosin ?1 within 7 days. The abdominal girth, body weight, tumor cell number, apoptosis and cell cycle were tested using methods of cell counting and flow cytometry. Results Adenoviral p53 gene transfer alone arrested H22 cell in G0/G1. In combination therapy group, ascitic fluid was obviously halted, tumor cells in peritoneal cavity decreased in number and ascites formation, dead cell ratio was elevated. Conclusion Adenoviral-mediated p53 gene could block cell proliferation. Intraperitoneal adenoviral p53 gene therapy combined with thymosin ?1 showed synergism for the lethal damage and inhibition for peritoneal carcinomatosis.

Breast-contour preservation(BCP)encompasses all strategies to preserve the contour of the breast following breast-conserving surgery (BCS) and immediate postmastectomy breast reconstruction (IBR). With the continuous advancement of breast surgery, postoperative outcomes and quality of life of breast cancer patients have been significantly improved. Previous studies reported on BCP as a new comprehensive parameter for evaluating outcomes of breast cancer treatment. Based on preoperative comprehensive evaluation of patients′ general condition, characteristic of breast tumor, and breast morphology, individualized surgical strategy is formulated to improve BCP for early-stage breast cancer and improve postoperative outcomes of patients. Combined with the morphological characteristics of Chinese women′s breasts, breast contour can be preserved not only by BCS and IBR, but also by nipple-areola complex-sparing mastectomy in some breast cancer patients, thereby reducing psychosomatic impact as a result of losing breast mound.

Background and purpose:This study aimed to explore the inlfuences on quality of life of patients with breast cancer in different stages undergone different styles of operations. Methods:During Apr. 2012 and Apr. 2013, a total number of 207 patients with breast cancer, including 61 patients undergone breast conserving surgery (BCS), 60 patients undergone immediate breast reconstruction (IBR) and 86 patients undergone modiifed radical mastectomy (MRM) reviewed or admitted in Beijing Tongren Hospital Afifliated to Capital Medical University were included in the research, in which FACT-B, SAS and SDS were used to assess the quality of life and negative emotions performing as the paired design. Results:The physical well-being, emotional well-being and the level of negative emotions such as anxiety and depression revealed signiifcant differences compared the patients who undergone BCS or IBR with those who undergone MRM in preoperative period (P<0.05), and there was no statistical difference in terms of other quality of life (P>0.05). At two and ifve years postoperatively, there was no signiifcant in the physical well-being, emotional well-being and negative emotions (P>0.05), whereas there was signiifcant differences in the other quality of life (P<0.05). Conclusion:BCS and IBR compared with MRM can obviously reduce the levels of preoperative negative emotions such as anxiety and depression, and improve the quality of life in long-term (two and ifve years postoperatively) to some degree.

Objective To evaluate the occurrence and prevention of pinch-off syndrome in post-operative complications of totally implantable central venous port.Methods From October 2003 to September 2016,628 cases underwent implantable central venous port via the subclavian vein using the landmark venipuncture technique.From February 2014 to September 2016,106 cases underwent implantable central venous port gaining subclavian venous access.Retrospective analysis of two groups of pinch-off syndrome after totally implantable central venous port.Results pinch-off syndromne were not found in the uhrasound-guided group,pinch-off syndrome occurred in 9 patients of 628 cases underwent implantable central venous port via the subclavian vein using the landmark venipuncture technique during follow-up period.Conclusions Subclavian venous access cannulation on the lateral side of mid-clavicular line by ultrasound guidance was found to be associated with absence of pinch-off syndrome.This method appears to reduce or prevent pinch-off syndrome occurrence after implantable central venous port,therefore improving the safety of the long-term management of implantable central venous port.

Objective To evaluate the value of reconstruction of submammary fold with lateral thoracic wall adipofascial flap after nipple-areola complex sparing mastectomy (NSM) in elderly patients with breast cancer.Methods To retrospective analysis 20 cases of elderly patients with breast cancer were admitted from March 2016 to June 2018 in Beijing Tongren Hospital,Capital Medical University using reconstruction of submammary fold with lateral thoracic wall adipofascial flap after NSM (study group).Twenty-two elderly patients with breast cancer who had breast-conserving and sentinel lymph node biopsy were selected as control group.The operation time,drainage tube retention time,postoperative hospitalization time,postoperative complications,breast contour satisfaction were statistically analyzed.The measurements were expressed as mean ± standard deviation (Mean ± SD),and t-test was used for inter-group comparison,and Chi-square test was used for inter-group comparison of counting data.Results All cases were followed up for 3-27 months without local recurrence and distant metastasis.The difference in operative time between the study group and control group was statistically significant [(2.085 ±0.163 1) h vs (1.918 ± 0.159 3) h,P =0.002].There was no significant difference between the study group and control group in drainage tube removal time(5.25 ± 0.910) d vs (5.27 ± 0.767) d,hospitalization days (6.25 ± 0.910) d vs (6.27 ± 0.767) d,breast contour satisfaction rate (90.0％ vs 81.8％) (P ＞ 0.05).Postoperative necrosis and liquefaction of adipofascial flaps occurred in 1 case in the study group and delayed healing occurred.Conclusion For some early-stage elderly breast cancer,reconstruction of submammary fold with lateral thoracic wall adipofascial flap after NSM,at the same time of radical surgery,can ensure the basic breast shape,avoid the chest wall deformity caused by traditional radical mastectomy,and improve the appearance and quality of life after mastectomy.

Objective:To investigate the role of embryonic stem cell pluripotent factor NANOG in mediating the activity and invasion of breast cancer cells via AMPK/mTOR pathway.Methods:A total of 58 breast cancer patients were collected from Jul. 2019 to Aug. 2020, and the clinical data of each patient at admission were collected for comparative analysis. qRT-PCR was used to detect the expression level of NANOG in adjacent tissues and cancer tissues, and Western blot was used to verify the regulation of AMPK/mTOR pathway by NANOG. Cells were treated with NANOG specific plasmid or AMPK inhibitor Compound C. Cell viability was detected by MTT and invasion ability was detected by Transwell.Results:The expression of NANOG was increased in breast cancer tissues (adjacent to cancer tissue: 1.00±0.31, cancer tissue: 1.45±0.27, t=8.34, P<0.004) and cell lines (MCF-10A: 1.00±0.12, BT474: 2.64±0.25, t=10.24, P=0.001; MCF-7: 1.56±0.13, t=5.48, P=0.005; ZR-75-30:1.84±0.16, t=7.28, P=0.002), which could be used as a specific biomolecule for predicting breast cancer (all P<0.05). The expression level of NANOG may be related to lymph node metastasis, histological grade and pathological type. Compared with patients with non-lymph node metastasis (1.36±0.23) or non-invasive patients (1.35±0.25), patients with lymph node metastasis (1.54±0.27, t=2.61, P=0.012) or invasive patients (1.53±0.26, t=2.60, P=0.012) had higher expression of NANOG. After NANOG knockdown, AMPK protein and phosphorylation levels were increased, while mTOR and p70S6K protein and phosphorylation levels were decreased (all P<0.05). Knockdown of NANOG in cells inhibited the activity and invasion of breast cancer cells (activity: si-RNA: 100±8.65, si-NANOG: 58.36±4.58, t=7.37, P=0.002; invasion: si-RNA: 121.41±10.34, si-NANOG: 58.34±8.41, t=8.20, P=0.001), and the effect of knockdown of NANOG was relieved after AMPK inhibitor was used in cells (all P<0.05) . Conclusions:Embryonic stem cell pluripotent factor NANOG promotes the activity and invasion of breast cancer cells by inhibiting the activation of AMPK/mTOR pathway. NANOG can be used as an effective biomolecule for predicting breast cancer.

An HPLC method for simultaneous determination of chlorogenic acid and mangiferin in original medicinal materials and decoction pieces of Pyrrosiae Folium was developed. The assay was performed on a Diamonsil C18 (4.6 mm x 250 mm, 5 microm) column eluted with a mobile phase consisted of acetonitrile and 0.5% phosphoric acid solution in gradient elution at a flow rate of 1.0 mL x min(-1). The column temperature was set at 25 degrees C. The detection wavelength was 320 nm. The results showed that The linear ranges of chlorogenic acid and mangiferin were 5.2-130 mg x L(-1) (r = 0.9999) and 1.2-18 microg x mL(-1) (r = 0.9999), and the average recoveries (n=6) were 97.9% (RSD 1.9%) and 99.6% (RSD 2.9%), respectively. The method was simple, reproducible and valid. It can be used for quality evaluation and control of original medicinal materials and decoction pieces of Pyrrosiae Folium.
Chlorogenic Acid ; analysis ; Chromatography, High Pressure Liquid ; Plants, Medicinal ; chemistry ; Reproducibility of Results ; Xanthones ; analysis

Objective: To discuss the surgical treatment and efficacy of endoscopic nipple-sparing mastectomy with skin lifting system (ENSMSLS) followed by immediate breast reconstruction. Methods: ENSMSLS was conducted on 21 patients followed by immediate breast reconstruction with implant via axillary incision from August 2014 to January 2016 in Oncology Center, Beijing Tongren Hospital, Capital Medical University. These 21 patients were frequency matched with 21 patients, who received nipple-sparing mastectomy via loop periareolar incision from November 2012 to May 2015 in the same center. These 21 patients formed the control group. The operation data of two groups were compared by t test and Fisher′s exact test. Results: Differences in operation time ((185±43) minutes vs. (165±33) minutes, t=1.778, P=0.101), amount of bleeding ((60±48) ml vs. (75±57) ml, t=-0.535, P=0.329), and drainage ((240±112) ml vs. (201±91) ml, t=1.238, P=0.233) between these two groups of patients were not statistically significant. There was no nipple necrosis recorded in the ENSMSLS group, while there were three cases (14.3%) recorded in the control group. Two cases (9.5%) of nipple transposition were recorded in the ENSMSLS group, while five cases (23.8%) were recorded in the control group. Differences in nipple necrosis and nipple transposition were statistically significant (0 vs. 5, P=0.001). There were 16 cases (76.2%) of excellent appearance recorded in the ENSMSLS group, while there were 11 cases (52.4%) recorded in the control group. There were 5 cases (23.8%) of good appearance recorded in the ENSMSLS group, while there were 9 cases (42.9%) recorded in the control group. There was no case of fair appearance in the ENSMSLS group, while there was 1 case (4.8%) recorded in the control group. Difference in postoperative appearance was statistically significant (P=0.001). Conclusions ENSMSLS significantly decreases the possibility of nipple necrosis and nipple transposition. This technique avoids visible incisions of breast. It also enhances the aesthetic appeal of reconstructed breasts.

Objective:To investigate the efficacy and clinical value of two-stage implant-based breast reconstruction after total mastectomy for breast cancer patients.Methods:Thirty-two patients with breast cancer, who underwent nipple-sparing mastectomy or skin-sparing mastectomy, primary skin expander implantation, and permanent implant replacement after radiotherapy from January 2018 to December 2020 in the Breast Center, Beijing Tongren Hospital, Capital Medical University were analyzed retrospectively. Record the operation time of the patient, the interval between replacement surgery and radiotherapy, prosthesis volume, the difference between the volume of 0.9% sodium chloride solution in the dilator and the volume of the prosthesis, the retention time of the postoperative drainage tube, the satisfaction of the breast shape and the complications after the replacement.Results:The average operation time was (67.81±19.71) min; the average time interval between replacement surgery and radiotherapy was (9.88±2.00) months; the average volume of 0.9% sodium chloride solution in the dilator was (225.47±56.83) mL, and the average prosthesis volume was (259.06±70.88) mL, the average difference between the volume of the prosthesis and the volume of 0.9% sodium chloride solution in the dilator was (33.59±14.88) mL; the volume of the prosthesis is increased by an average of (13.65±5.19)% compared with the dilator; the average time of drainage tube retained after the operation was (9.03±1.40) d; satisfaction with breast shape after replacement: excellent in 23 cases (71.9%), general in 8 cases (25.0%), poor in 1 case (3.1%); postoperative complications: incision fat liquefaction 1 case of dehiscence (3.1%), 2 cases of seroma (6.3%), no serious complications such as external exposure and removal of the prosthesis.Conclusions:For patients with breast cancer, who need breast reconstruction after mastectomy, the two-stage implant-based breast reconstruction in which the replacement operation will be carried out more than 6 months after radiotherapy is safe. Moreover, achieve better symmetry and aesthetic effect by releasing the capsule, reconstructing the inframammary fold, and necessary plastic surgery of the contralateral breast.

Objective:To explore the individualized surgical methods for elderly breast cancer patients.Methods:Elderly patients(aged≥70 years)with stage 0-Ⅲ breast cancer admitted to Beijing Tongren Hospital Affiliated to Capital Medical University from January 2013 to June 2020 were retrospectively analyzed.They were divided into three groups based on surgical methods: breast-conserving surgery, nipple-areola complex-sparing mastectomy and traditional mastectomy.Age, tumor size, lymph node involvement, hormone receptor status, anesthesia mode, surgical operation mode and patient prognosis were retrospectively analyzed.Results:A total of 144 patients(147 cases)were followed up for 8-96(36.5±10.7)months, with a median of 27 months.The overall survival rate was 88.9%, with breast cancer-related deaths at 6.3%, non-breast cancer-related deaths at 4.9%, local recurrence at 3.5%, and systemic metastasis at 5.6%.Among the three groups, 38.5%, 82.0% and 73.3%, respectively, received general anesthesia.Breast-conserving surgery showed the shortest operation time[(71.7±31.6)min vs.(84.8±24.8)min vs.(100.0±34.4)min, F=7.264, P=0.001], the lowest postoperative drainage volume[(39.5±75.4)ml vs.(154.92±135.6)ml vs.(334.1±287.2)ml, F=31.481, P<0.001]and the shortest drainage duration[(2.8±3.3)d vs.(6.3±2.8)d vs.(8.5±3.7)d, F=38.101, P<0.001]. Conclusions:The surgical treatment of elderly patients with breast cancer should be based on comprehensive evaluation and accurate molecular typing.Breast-conserving surgery is the preferred surgical method for elderly patients with hormone receptor-positive and cN0 breast cancer.Mastectomy with skin and nipple areola preservation where appropriate can improve the therapeutic effect and quality of life for elderly breast cancer patients.