Objective To study the effect of brucine on the growth of a hepatocellular carcinoma cell line in vitro. Methods Brucine was added into a liver cancer cell line of SMMC-7721 in vitro, at drug concentration of brucine from 2. 5 μg/ml to 400 μg/ml. The inhibition rate of cell growth was measured by MTT technique after the cells were cultured for 72 hours. The protein and mRNA expression of PCNA,cyclin D1 and FAS were respectively assayed with Western blotting and fluorescent quantitation RT-PCR techniques at 24, 48, 72 h. Results The inhibition rate of liver cancer cell was near 100% when the brucine concentration was at 320 μg/ml. The protein and mRNA expression of FAS were of no significant difference at 24 h vs 48 h ( seperately F = 2. 547,1. 582, all P ＞ 0. 05 ), and significant difference existed at 24 h vs 72 h( seperately F = 1. 036, 1. 137, all P ＜ 0. 05 ). The protein and mRNA expression of PCNA,Cyclin D1 were of no significant difference between various time period( seperately PCNA F = 3.612,2. 174,3.029;Cyclin D1 F=2.361,2.915,1.976,all P＞0.05). Conclusions Brucine inhibits the growth of liver cancer cells, by inducing increased apoptosis of the cells probably through FAS overexpression.

Objective To observe the clinical significance and effect of dysfunction of dendritic cell( DC) in colorectal cancer with liver metastasis.Methods Peripheral blood were respectively collected from healthy adult donors (30 cases), preoperative and postoperative coloreatal cancer patients without liver metastasis (30 cases) , and 30 postoperative coloreatal cancer patients with liver metastasis from Jan 2008 to Jun 2010.Peripheral blood mononuclear cells were separated, GM-CSF( 1000 U/ml) , IL-4( 1000 U/ml) and TNF-α ( 1000 U /ml) were added into cell culture fluid to induce the mononuclear cells for mature dendritic cells.There were two subgroups, and in antigen processing subgroup the lysate of HT29 colonic carcinoma cells (100 μg/ml) were added into the cell culture fluid.The T lymphocytes from healthy adults were added into two subgroups by ratio of 1∶10 ( DCs∶ T cells) , cocultured for 7 days.The level of INF-γ and IL-10 in cell culture fluid was assayed with ELISA method.The optical density (OD) of CCK8 ans LDH was assayed with ELIASA to indirectly measure the reproductive activity and the killing efficacy of T lymphocytes.Results The IL-10 level in cocultured fluid of peripheral blood DCs in postoperative colorectal carcinoma patients with liver metastasis and T lymphocytes of healthy adults was significantly higher than that of preoperative patients of colorectal carcinoma and health adults without tumor antigenic stimulation(11.9±1.3) pg/ml vs.(29.6±9.7) pg/ml, (23.4±8.0) pg/ml, F =4.475, P ＜0.05).The IFN-γ level in cocultured fluid of peripheral blood DCs in postoperative colorectal carcinoma patients with liver metastasis and T lymphocytes of healthy adults was significantly higher than that of postoperative patients of colorectal carcinoma and healthy adults with or without tumor antigenic stimulation ( 34 ± 9) pg/ml vs.(26 ± 12 ) pg/ml, (24 ± 6) pg/ml, F = 5.206, P ＜ 0.05).The killing activity of healthy adults T lymphocytes induced by HT29 colonic carcinoma cells in postoperative colorectal carcinoma patients with liver metastasis was significantly higher than that of preoperative patients of colorectal carcinoma and healthy adults (30.6 ±8.6) pg/ml vs.(12.1 ±2.4) pg/ml, (14.9 ± 1.7) pg/ml, F =4.147, P ＜ 0.05).Conclusions T lymphocytes produce IL-10 when indued by DCs from patients with colorectal carcinoma under stimulation of tumor antigen leading to tumor immune escape and liver metastasis.The killing activity of T lymphocytes can be enhanced when stimulated by exogenous tmuor antigen.

Objective To observe the therapeutic effect of brucine nanoparticles on hepatocellular carcinoma.Methods Brucine nanoparticles with block copolymer of carboxylation polyethylene glycol and polylactic acid were manufactured by ultraphonic emulsification.The effect brucine nanoparticles on growth of SMMC-7721 cell line was observed in vitro.The protein and mRNA levels of Fas were measured with Western blotting and FQ-PCR respectively after the brucine nanoparticles were added into cell culture fluid for 72 hours.Results The mean diameter,the carried drug rate and the entrapment rate of brucine nanopaticles was 146±96 nm,4.2％ and 67％,respectively.The growth inhibition of liver cancer cells was enhanced significantly with the increasing drug dose.The IC50 of growth inhibition of 5-FU,brucine and brucine nanoparticles was 16.7 μg/ml,90.3 μg/ml and 164.9 μtg/ml,respectively.There was significant difference among them (P＜0.05).The protein and mRNA expression of Fas in brucine nanoparticles treated SMMC-7721 cells increased significantly compared with that in blank control group(P＜0.05).Conclusion Brucine nanoparticles may potentially be a novel therapeutic drug for hepatocellular carcinoma.

Objective:To observe the effects of modified Taohong Siwu Decoction on peripheral circulation status of affected limbs and serum thromboxane B 2 (TXB 2) and prostacyclin (PGI 2) levels in patients with traumatic limb fractures after open reduction and internal fixation. Methods:Randomized controlled trial study was conducted. 70 patients with traumatic limb fractures who underwent open reduction and internal fixation in the hospital from February 2020 to February 2023 were set as observation subjects and divided into control group (34 cases) and observation group (36 cases) according to the order of hospitalization. The control group was given conventional method for treatment, and the observation group was given modified Taohong Siwu Decoction adjuvant therapy on the basis of the control group. The treatment for both groups lasted for 2 weeks. TCM symptoms scores were evaluated before and after treatment. Ankle brachial index (ABI) was detected using a Doppler blood flow detector. Color Doppler ultrasound was used to detect the inner diameter, blood flow, and deep veins of the affected limb; serum levels of TXB 2 and PGI 2 were detected by ELISA. Results:After treatment, the total effective rate of clinical efficacy was 91.67% (33/36) in observation group and 73.53% (25/34) in control group, with statistical significance ( P<0.05). After treatment, the observation group had lower scores for qi and blood stasis (2.13 ± 0.43 vs. 3.61 ± 0.96, t=5.85), tendon and bone injury (1.62 ± 0.41 vs. 2.74 ± 0.58, t=9.37), swelling and ecchymosis (1.15 ± 0.31 vs. 2.28 ± 0.52, t=1.12), and liver and kidney deficiency (1.52 ± 0.24 vs. 2.15 ± 0.36, t=8.66) compared to the control group ( P<0.001); after treatment, the ABI (0.83 ± 0.03 vs. 0.74 ± 0.02, t=14.68), vascular diameter [(0.48 ± 0.13) mm vs. (0.42 ± 0.11) mm, t=2.08], and blood flow velocity [(60.24 ± 15.46) cm/s vs. (52.15 ± 12.11) cm/s, t=2.41] in the observation group were higher than those in the control group ( P<0.01 or P<0.05). After treatment, the serum TXB 2 levels [(140.76 ± 16.64) ng/L vs. (168.39 ± 25.28) ng/L, t=5.37] and TXB 2/PGI 2 (6.67 ± 1.24 vs. 9.33 ± 1.69, t=7.54) in the observation group were lower than those in the control group ( P<0.01); the level of PGI 2 [(21.27 ± 2.24) ng/L vs. (18.71 ± 1.79) ng/L, t=5.26] was higher in the control group ( P<0.01). The incidence of deep vein thrombosis after treatment in the observation group was 19.44% (7/36), while in the control group it was 44.12% (15/34), with statistical significance ( χ 2=4.94, P=0.026). Conclusion:Modified Taohong Siwu Decoction adjuvant therapy can enhance the clinical efficacy of patients with traumatic limb fractures after open reduction and internal fixation, relieve the TCM symptoms, improve the peripheral circulation status of affected limbs, reduce the postoperative hypercoagulability and prevent the deep venous thrombosis formation.

Objective:To comprehensively evaluate the performance of the iterative cone beam CT (iCBCT) imaging mode of Varian linear accelerators and to explore its specific advantages in clinical application.Methods:The kV cone beam CT (CBCT) imaging systems of Halcyon 2.0, Edge, and VitalBeam linear accelerators from Tianjin Medical University Cancer Institute & Hospital were selected, among which Halcyon 2.0 and Edge were equipped with the iCBCT imaging mode. The Penta-Guide phantom was used to evaluate the registration accuracy of iCBCT imaging modes. The accuracy of treatment couch position was measured by a ruler. The image quality of the iCBCT and conventional CBCT modes of various imaging devices were analyzed using the CatPhan604 phantom. The imaging beam-on time and reconstruction time were measured to assess image acquisition efficiency. The uniformity, spatial resolution, contrast, contrast-to-noise ratio (CNR), image acquisition time and reconstruction time between two imaging modes were statistically analyzed by t-test. Results:The maximum deviations of image registration measurement results of the iCBCT mode for Halcyon 2.0 and Edge accelerators compared to the standard values were 0.7 mm and 0.6 mm, respectively. The treatment couch position error of all devices was less than 1 mm. The iCBCT images under head scanning protocol primarily improved the uniformity and CNR. Compared to conventional CBCT images, Halcyon iCBCT increased the uniformity and CNR by 2.50% ( P<0.001) and 78.85% ( P<0.001), respectively, while Edge increased them by 2.18% ( P<0.001) and 86.42% ( P<0.001), both superior to VitalBeam CBCT images. Under pelvis scanning protocols, iCBCT images primarily improved the CNR compared to conventional CBCT images. Halcyon and Edge iCBCT increased the CNR by 113.57% ( P<0.001) and 133.87% ( P<0.001), respectively, both superior to VitalBeam CBCT images. In terms of image acquisition efficiency, the average reconstruction times for Halcyon and Edge iCBCT images increased by 7.28 s and 15.53 s, respectively, and the total image acquisition time of Halcyon accelerator was the shortest. Conclusions:While ensuring the registration accuracy, iCBCT imaging mode can significantly improve the CNR of images and improve the uniformity of images under head scanning protocol. The Halcyon imaging system can enhance image acquisition efficiency.