Metastatic dissemination is the major cause of death from breast-cancer (BC). Fusobacterium nucleatum (F.n) is widely enriched in BC and has recently been identified as one of the high-risk factors for promoting BC metastasis. Here, with an experimental model, we demonstrated that intratumoral F.n induced BC aggressiveness by transcriptionally activating Epithelial-mesenchymal transition-associated genes. Therefore, the F.n may be a potential target to prevent metastasis. Given the fact that cancer-associated fibroblasts (CAFs) are abundant in BC and located near blood vessels, we report an optogenetic system that drives CAF to in situ produce human antibacterial peptide LL37, with the characteristics of biosafety and freely intercellular trafficking, for depleting intratumoral F.n, leading to a 72.1% reduction in lung metastatic nodules number without affecting the balance of the systemic flora. Notably, mild photothermal treatment was found that could normalize CAF, contributing to synergistically inhibiting BC metastasis. In addition, the system can also simultaneously encode a gene of TNF-related apoptosis-inducing ligand to suppress the primary tumor. Together, our study highlights the potential of local elimination of tumor pathogenic bacteria to prevent BC metastasis.

Objective:To establish a method via transfection of RNA to rescue coxsackievirus B3 B3 (CVB3).Methods:The efficiency of CVB3 genomic RNA extraction from three nucleic acid extraction reagents, Qiagen 57704, Qiagen 52904, and Trizol, and the transfection efficiency of viral RNA with two transfection reagents (Lipofectamine 2000 and Lipofectamine 3000) were compared. The efficiency of CVB3 rescue in Vero cells and HEK293T cells to determine the optimal conditions for rescuing CVB3.Results:The number of phagolysosomes for virus rescue by Qiagen 57704, Qiagen 52904, and Tizol kit extracted RNA was 13.33±1.53, 150±15.00, and 1.67±0.58, respectively, and there was a statistically significant difference in the efficiency of the three method of extracting CVB3 RNA to rescue the viral RNA ( F=268.920, P<0.001); The number of phage spots formed by Lipofectamine3000 and Lipofectamine2000 transfected RNA was 74.50±3.00 and 22.00±5.00, respectively, and the difference was statistically significant ( P<0.01); Qiagen 52904 reagent extracted CVB3 nucleic acid more efficiently than Qiagen 57704 and Trizol reagents; the transfection efficiency of transfection reagent Lipofectamine 3000 was 3 times more than than that of Lipofectamine 2000, and the efficiency of virus rescue of CVB3 in HEK293T cell culture was higher than that of HeLa and Vero cells, and the copy numbers of the three kinds of viruses rescuing the virus were 6.09×10 7±8.00×10 5, 5.18×10 3±6.17×10 2 and 0, the difference was statistically significant ( F=17 383.644, P<0.001), and it was also found that the efficiency of virus rescue could be improved by multiple elution when extracting RNA. Conclusions:In this study, we successfully established the method of transfecting RNA to rescue CVB3, which can effectively improve the efficiency of virus rescue by choosing Qiagen 52904 nucleic acid extraction kit, increasing the number of elution, using Lipofectamine 3000 transfection reagent, and transfection of HEK293T cells.

Objective:To analyze and synthesize the care experience of caregivers of patients with spinal cord injury.Methods:Qualitative research on the care experience of caregivers of patients with spinal cord injury was retrieved by computer in Chinese and English databases such as PubMed, Embase, Web of Science, Cochrane Library, China National Knowledge Infrastructure (CNKI) , Wanfang Database, VIP, and China Biomedical Literature Database. The retrieval time was from the establishment of the database to December 11, 2020. The quality of the articles was evaluated by the quality evaluation criteria for qualitative research of the Joanna Briggs Institute (JBI) Evidence-Based Health Care Center in Australia, and the results were pooled for Meta-synthesis.Results:A total of 8 articles were included, and 33 research results were extracted, and 8 new categories were summarized, and 3 integrated results were synthesized. Integrated result 1 was the change in caregiver's psychological experience (In the process of long-term care, the psychological process of the caregiver was constantly changing, and a positive care experience was obtained through psychological support) . Integrated result 2 was the change in personal and social relationships (Caregivers' personal roles and social relationships were affected by taking care of patients for a long time, seeking multiple social supports, and gradually adjusting and adapting) . Integrated result 3 was the change in knowledge and skills (Due to the sudden nature of spinal cord injury, caregivers lacked caring knowledge and skills and were eager to learn caring skills) .Conclusions:The care experience of caregivers of patients with spinal cord injury is multifaceted. Medical and nursing staff should pay attention to the care needs and real experience of caregivers, provide them with professional care guidance and support, help them to be well qualified as caregivers, and improve the physical and mental health and quality of life of patients with spinal cord injury and their caregivers.

Chimeric antigen receptor T (CAR-T) cell has achieved excellent efficacy in hematological tumors, especially for lymphoma. Many products have been approved to market all over the world, and 2 products targeting CD19 have been approved to treat relapsed and refractory large B-cell lymphoma in China. The current experiences of using CAR-T cells come from previous clinical studies. How to use CAR-T cells in a standardized and rationalized way is still a challenge faced by our clinicians. Based on the CAR-T cell treatment experiences from Peking University Cancer Hospital and the latest research progresses in CAR-T in China and abroad, this article will elaborate on patient screening, peripheral blood mononuclear cell collection, bridging treatment, lymphocyte depletion chemotherapy, CAR-T cell infusion, the monitoring and treatment of adverse events after infusion, and long-term follow-up after infusion, in order to guide clinicians to better use CAR-T cell and to bring maximum benefits to patients.

Objective:To systematically evaluate the experience of self-management in peritoneal dialysis patients.Methods:Databases including PubMed, Embase, Web of Science, the Cochrane Library, PsycInfo, Scopus and CNKI, Wanfang, VIP, CBM and Google Scholar were searched and relevant qualitative research on self-management experience of peritoneal dialysis patients was retrieved with a time limitation from the establishment of the databases to April 6, 2020. The quality of articles was evaluated by the quality evaluation standard of qualitative research of JBI evidence-based health care center (2008) , and the results were Meta integrated.Results:A total of 8 studies were included, and 26 complete research results were extracted. We summed up 10 new categories, and obtained 3 integrated results. Integration result 1: cognitive and behavioral management. Patients try to maintain the independence and confidence of peritoneal dialysis management through facing renal failure and adapting to dialysis treatment. Integration result 2: crisis identification and management of complications. Through continuous learning of knowledge and skills related to dialysis treatment, as well as identification and treatment of worsening symptoms, patients can improve their ability of crisis identification and management. Integration result 3: role and social relationship management. Patients constantly adjust their roles and emotions to adapt to changes in daily life and maintain social functions and strive to strengthen communication with medical care, family and society to obtain social relationship support, and increase patients' confidence in self-management.Conclusions:The self-management of peritoneal dialysis patients involves many aspects. The medical staff should give understanding, guidance, and support to the patients' self-management and self-care process in combination with family and society, to help them with better self-management and improve their quality of life.

BACKGROUND: Subsolid pulmonary nodules are common computed tomography (CT) findings of primary lung adenocarcinoma. It is of clinical value to determine the clinical treatment strategies based on CT features. The aim of this study is to find the valuable CT characteristics on differential diagnosis and the degree of invasion prediction by a retrospectively analysis of three groups subsolid nodules, including benign, and invasive adenocarcinoma. METHODS: The CT findings of 106 cases of resected sub-solid nodules were retrospectively analyzed. The nodules were firstly divided into benign and malignant groups and the malignant group was further divided into non/micro-invasive group (atypical adenomatous hyperplasia/adenocarcinoma in situ/minimally invasive adenocarcinoma) and invasive adenocarcinoma group. The nodule size, proportion of solid components, tumor-lung interface, shape, margin, pleural traction, air bronchus sign, vascular abnormalities inside the nodule were evaluated. The univariate analysis (χ2 test, non-parametric test Mann-Whitney U test) was performed to screen statistically significant variables and then enrolled in further multivariate Logistic regression analysis. RESULTS: Multivariate logistic regression analysis showed that a clear tumor-lung interface, air bronchus sign, and pulmonary vascular abnormalities were important indicators of malignant nodules with hazard ratios of 38.1 (95%CI: 5.0-287.7; P<0.01), 7.9 (95%CI: 1.3-49.3; P=0.03), 7.2 (95%CI: 1.4-37.0; P=0.02), respectively. The proportion of solid components was the only significant indicator for identifying invasive adenocarcinoma from AAH/AIS/MIA , with a risk ratio of 1.04 (95%CI: 1.01-1.06, P=0.01). CONCLUSIONS SSNs with clear tumor-lung interface, air bronchus sign, and pulmonary vascular abnormality inside nodule are more likely to be malignant. A higher percentage of solid components indicates a higher likelihood to be an invasive lesion in malignant SPNs.
Adenocarcinoma ; diagnostic imaging ; pathology ; Adenocarcinoma of Lung ; Adult ; Aged ; Diagnosis, Differential ; Female ; Humans ; Lung Neoplasms ; diagnostic imaging ; pathology ; Male ; Middle Aged ; Multivariate Analysis ; Neoplasm Invasiveness ; Retrospective Studies ; Tomography, X-Ray Computed

This paper focused on factors which affected on different color of northern and southern region vinegar-processed frankincense.Meanwhile,contents of six main boswellic acids were also determined to elaborate the influence of heat in chemical components.Vinegar-processed frankincense from northern and southern region was collected.And different temperature and time were used in the processing of frankincense to receive the vinegar-processed frankincense samples.The color difference meter was utilized combining with the PCA statistic analysis method.The Zorbax ExtendC18 chromatographic column (4.6 mm × 50 mm,1.8 μm) was used with acetonitrile-0.1％ phosphoric acid as the mobile phase and gradient elution.The velocity of flow was 1 mL· min-1.The detection wavelength was 210 nm and 250 nm.The column temperature was 30℃.The results showed that the color of northern region processed frankincense was yellow or pale brown.And the southern region processed frankincense was pale brown or dark brown.It showed the difference on processed degree.The L* value of the northern processed frankincense was 75.327 to 80.746 and the L* value of southern processed was 44.321 to 49.527.The a* value of the northern processed frankincense was 5.378 to 6.502 and the a* value of southern processed was 9.423 to 9.978.There was no significant difference on b*.There were certain differences on L* and a* among vinegar-processed frankincense with the same surface color.The color parameter results of self-made vinegar-processed frankincense indicated that along with changes of processing temperature and time,the color,L* and a* change.Even frankincense processed for 30 min with mild fire,it will not achieve the color parameter value of the southern region vinegar-processed frankincense.However,after 11 min processing with medium fire,the color can be achieved.The content determination results showed that four contents,including α-boswellic acid,β-boswellic acid,3-acetyl-α-boswellic acid and 3-acetyl-β-boswellic acid were increased.Contents of 11-carbonyl-3-boswellic acid and 3-acetyl-11-carbonyl-β-boswellic were decreased after being processed.The range of increasing or decreasing by medium fire was higher than mild fire.At the same temperature,as the increasing of processing time,the content has an increasing or decreasing tendency.It was concluded that temperature was the main factor influencing the color of vinegar-processed frankincense from northern and southern regions.Different processing degrees also make influence on the contents of chemical compounds.The color parameter value can be used to evaluate the color of processed frankincense.

Objective: To establish quantitative real-time PCR (qPCR) method based on Taqman probe for detecting Ekpoma virus (EKV). Methods: According to the conserved region of gene in EKV genome from GenBank, primers and probe for qPCR were designed. Validity and sensitivity were evaluated in this study. Both whole blood and serum of a returnee from Angola were tested by the established EKV-1 and EKV-2 qPCR method . Results: Sensitivity of EKV-1 and EKV-2 qPCR method was respectively 41 copies/μl and 70 copies/μl. Coefficient of variance (CV) was respectively 1.27%, 0.20%, 0.82%; 2.12%, 1.74%, and 1.40%. EKV-2 gene was detected in both whole blood and serum of a returnee from Angola. Conclusions The first EKV-2 gene was confirmed in both whole blood and serum of a returnee from Angola by real-time RT-PCR..

Background and objective Background and objective Follow up by computed tomography (CT) and growth evaluation are routine methods for the differential diagnosis of indeterminate pulmonary nodules in clinical practice. Pulmonary nodules with diverse biological behaviors may show different growth patterns and velocities. The aim of this study is to identify the volume growth curve of both benign and malignant pulmonary nodules. This work also intends to determine these nodules' growth patterns and provide evidence for the establishment of a follow-up strategy. Methods The CT data of 111 pulmonary nodules (54 solid, 57 subsolid) were retrospectively evaluated using 3D volumetric software. All of these nod-ules have been followed up at least twice. Of these nodules, 35 were confirmed as lung cancers, whereas 5 were confirmed as benign by pathology or histology. Moreover, 71 nodules showed no growth in more than 2 years. Stable nodules were defined as low-risk nodules, as confirmed by reevaluation from experts. On the basis of their densities and diameters, the nodules were classified into four types: benign/low-risk solid nodules, malignant solid nodules (diameter ≤1 cm and >1 cm), benign/low-risk subsolid nodules, and malignant subsolid nodules (diameter ≤1 cm and >1 cm). The follow-up interval time (d) were plot-ted on the x-axis, and the nodules' volume (mm3) and logarithmic volume were plotted on the y-axis. Two radiologists subjec-tively determined the type of growth curve. Chi-square test was performed to compare the growth curves of benign/low-risk and malignant nodules. Results Of 18 solid cancers, 12 cases (66%) were found with steep ascendant growth curves. Those of 3 cases (16.7%) were flat ascendant, 2 cases (11.1%) slowly ascendant, and 1 (5.56%) case flat. Of 17 subsolid cancers, 8 cases (47.1%) manifested steep ascendant growth curves. Those of 4 cases (23.5%) were slowly ascendant, 3 (17.6%) flat, and 2 (11.8%) descendant–ascendant. Of 36 benign/low-risk solid nodules, 5 cases (13.9%) manifested descendant growth curves, 17 cases (47.2%) flat, 8 cases (21.6%) slowly ascendant, and 6 cases (16.7%) undulate. Of 40 benign/low-risk subsolid nod-ules, 4 cases (10%) manifested descendant growth curves, 21 cases (52.5%) flat, 9 cases (22.5%) slowly ascendant, and 6 cases (15%) undulate. The distribution of growth curve types significantly differed between benign/low-risk and malignant nodules (χ2=42.4, P<0.01). Conclusion The growth curves of lung cancers are heterogeneous. A steep ascendant curve is the main type for lung cancer, with the exception of flat, slowly ascendant, or even descendant curve. A slowly ascendant curve cannot exclude the diagnosis of lung cancer, especially for subsolid nodules.

Objective: To summarize the existed problems and the relationship between the medical insurance and basic medical insurance policy, to find more reasonable payment mode to adjust with the medical insurance policy. Methods: On the basis of the endowment insurance implement experience, explore the payment mode of medical insurance. Results: It is very necessary to set the payment period of the basic medical insurance.