Nursing care of patients with malignant tumor treated by 3D printing individualized template and 125I seed implantation / 中华护理杂志

This paper summarized nursing experience of 23 patients with malignant tumor treated by 3D printing individualized template and 125I seed implantation.Nursing points included:preoperative assessment and preparation,reviewing the process of template conduction,assisting the physician to simulate the position of patients,making treatment plans,preparing templates before operation;resetting and maintaining position of patients,performing template alignment,seed implantation,monitoring vital signs and complications during operation;observation of complications,providing radiation protection and discharge guidance after operation.All 23 patients completed 125I seed implantation and no serious complication was observed.All patients recovered well and were discharged after treatment.

Vascular endothelial growth factor secreted by breast cancer cells plays a critical role in the formation of pre-metastatic niche in the mouse lung / 中华肿瘤杂志

<p><b>OBJECTIVE</b>To explore the formation of pre-metastatic niche in the mouse lung and to study the underlying molecular mechanisms whereby primary breast carcinoma-derived factors mediate recruitment of bone marrow-derived cells (BMDCs) and affect the formation of pre-metastatic lung environment before the arrival of tumor cells.</p><p><b>METHODS</b>Mammary carcinoma 4T1 cells were inoculated into the mammary gland to construct mouse model of breast cancer. Confocal microscopy was used to detect the recruitment of BMDCs in the pre-metastatic lungs. The expression of factors in the mouse sera and 4T1 cell culture media was assayed using RayBio Custom mouse cytokine antibody array kit. The mice were injected daily with recombinant VEGF for 7 consecutive days to observe the effect of VEGF on BMDCs recruitment in the mouse lung.</p><p><b>RESULTS</b>No BMDCs were observed in the lungs of control and 4T1-tumor-bearing mice on day 0. On day 7 and 14, clusters of BMDCs observed in the lungs of 4T1-tumor-bearing mice were 8.7±2.2/objective field and 48.8±3.2/objective field, respectively, significantly higher than those in the control mice (1.1±0.8/objective field and 3.1±1.7/objective field) (P<0.05 for both). Confocal microscopic observation found that metastatic breast cancer cells preferentially facilitate BMDCs recruitment sites in the pre-metastatic mouse lungs. The levels of VEGF, GM-CSF, and IL-6 in the serum of 4T1-tumor-bearing mice were significantly increased compared with those in the control group (P<0.05 for all). However, VEGF was detected only in the culture media of 4T1 cells. The amount of BMDCs in the mouse lung tissue was (22.8±3.6)/objective field in the VEGF group and (3.1±0.4)/objective field in the control group (P<0.05). There were 36.8±5.4 metastatic foci in the lung tissue of VEGF group and 12.6±2.2 in the control group (P<0.05).</p><p><b>CONCLUSIONS</b>The results of this study demonstrate that primary breast cancer cells can alter the lung microenvironment during the pre-metastatic phase and induce the formation of pre-metastatic niche. Primary tumor cell-derived VEGF may be a crucial factor responsible for the formation of pre-metastatic niche.</p>

Topotecan in combination with cisplatin in the treatment of recurrent small cell lung cancer / 中国肺癌杂志

<p><b>BACKGROUND</b>There is no effective regimen for recurrent small cell lung cancer patients now. The aim of this study is to assess the activity and toxicity of topotecan combined with cisplatin in the treatment of recurrent small cell lung cancer patients.</p><p><b>METHODS</b>Twenty-eight patients with progressive disease after one first-line regimen enrolled in the study from May 2002 to October 2004. Topotecan was given at the dose of 1.2mg/m² from 1st to 4th days and cisplatin was administered at the dose of 25mg/m² from 5th to 7th days in a cycle of 3 weeks. The patients could be evaluated at least after 2 cycles.</p><p><b>RESULTS</b>One patient got complete response and ten patients got partial response in this group. The overall response rate was 39.3% , and the response rate of refractory group and sensitive group was 37.5% (3/8) and 40.0% (8/20) respectively. The median time to progression was 4.2 months. The main toxicity was hematological toxicity. Grade III+IV neutropenia occurred in 42.9% (12/28) of the patients.</p><p><b>CONCLUSIONS</b>The regimen of topotecan and cisplatin shows better activity in retreated small cell lung cancer patients. The main toxicity is hematological toxicity and can be tolerated.</p>

Clinical observation of advanced NSCLC in the aged treated by gemcitabine combined with cisplatin / 中国实用内科杂志

Objective To Observe the effects of combination regimen of gemcitabine and cisplatin in treating advanced non-small cell lung cancer (NSCLC).Methods 30 patients with advanced NSCLC were treated with GP(GEMZAR 1000mg/m2 d1,8;CDDP 25mg/m2 d1～3 ).The course was repeated every 3 weeks for at least 2 cycles.Results The overall response rate was 36.7%(11/30),whereas 13 patients had stable disease and 6 patients showed progressive disease.The response rate was 46% in untreated patients and 29% was obtained in treated ones.Significant difference was observed between the two groups (P