The lncRNAs RP1-261G23.7, RP11-69E11.4 and SATB2-AS1 are a novel clinical signature for predicting recurrent osteosarcoma.

BACKGROUND: Osteosarcoma is the most common primary bone malignancy in children and adolescents. In order to find factors related to its recurrence, and thus improve recovery prospects, a powerful clinical signature is needed. Long noncoding RNAs (lncRNAs) are essential in osteosarcoma processes and development, and here we report significant lncRNAs to aid in earlier diagnosis of osteosarcoma. METHODS: A univariate Cox proportional hazards regression analysis and a multivariate Cox regression analysis were used to analyze osteosarcoma patients' lncRNA expression data from the Therapeutically Applicable Research To Generate Effective Treatments (TARGET), a public database. RESULTS: A lncRNA signature consisting of three lncRNAs (RP1-261G23.7, RP11-69E11.4 and SATB2-AS1) was selected. The signature was used to sort patients into high-risk and low-risk groups with meaningful recurrence rates (median recurrence time 16.80 vs. >128.22 months, log-rank test, P<0.001) in the training group, and predictive ability was validated in a test dataset (median 16.32 vs. >143.80 months, log-rank test, P=0.006). A multivariate Cox regression analysis showed that the significant lncRNA was an independent prognostic factor for osteosarcoma patients. Functional analysis suggests that these lncRNAs were related to the PI3K-Akt signaling pathway, the Wnt signaling pathway, and the G-protein coupled receptor signaling pathway, all of which have various, important roles in osteosarcoma development. The significant 3-lncRNA set could be a novel prediction biomarker that could aid in treatment and also predict the likelihood of recurrence of osteosarcoma in patients.

Predictive value of ultrasonographic measurement of inferior vena cava diameter respiratory variability on fluid responsiveness evaluation of hip fracture in geriatric patients / 中华创伤杂志

Objective To evaluate the predictive value of ultrasonography of the respiratory variability index of inferior vena cava internal diameter (IVC-RVI) in preoperative fluid responsiveness evaluation of hip fracture in geriatric patients.Methods A retrospective case-control study was used to analyze 39 cases of elderly hip fractures admitted to the Daping Hospital of Army Medical Center from August 2017 to February 2018,including 15 males and 24 females,aged 65-92 years [(80.9 ±7.9)years].The heart rate (HR),mean arterial pressure(MAP),cardiac output (CO),and cardiac stoke volume (SV)were recorded five minutes after the patient entered the operating room and within 5 minures after capacity load test.The inferior vena cave during expiration (IVCe) and inferior vena cave during inspiration (IVCi) were measured by ultrasound before and after volume load test and the difference in IVC-RVI was calculated.Volumetric positive group were the cases of SV change (△SV) ≥15％ (positive group,n =21),and volume negative group were the cases of △SV ＜ 15％ (negative group,n=18).The correlations between various ultrasonic parameters and SV were analyzed by comparing HR,MAP,CO,SV,SV,IVCe,IVCi and IVC-RVI before and after the capacity load test.The predictive value of IVC-RVI for preoperative volumetric reactivity in elderly patients with hip fractures was evaluated by using the receiver operative characteristic (ROC) curve and Pearson correlation analysis.Results Prior to the volumetric load test,no significant difference was observed between the two groups concerning HR,MAP,CO,SV,and IVCe (P ＞ 0.05),IVCi in the positive group was significantly smaller than that in the negative group (P ＜ 0.05),and IVC-RVI in the positive group was significantly larger than that in the negative group (P ＜ 0.05).After the volumetric load test,there was no statistically significant difference between the two groups in CO,IVCe,IVCi,and IVC-RVI (P ＞ 0.05),HR in the positive group was smaller than that in the negative group (P ＜ 0.05),and MAP and SV in the positive group were significantly larger than that in the negative group (P ＜ 0.05).Compared with that before capacity load test,MAP,CO,and SV in the positive group increased after the capacity load test (P ＜ 0.05),while the HR difference was not statistically significant (P ＞ 0.05).HR,MAP,CO,and SV showed no significant difference in the negative group before and after capacity test (P ＞ 0.05).IVC-RVI assessed the area under the curve (AUC) was 0.80 ± 0.08 for preoperative volumetric responsiveness in elderly hip fractures (P ＜ 0.05),with a critical point of 20.69％,sensitivity of 77.78％,and specificity of 76.19％.After Pearson correlation analysis,IVC-RVI was positively related to △SV (OR =0.367,P ＜ 0.05).Conclusion Ultrasonography of the respiratory variability of IVC can predict the preoperative fluid responsiveness of hip fracture in geriatric patients and guide for clinical rehydration.

Biodistribution and evaluation of 131 I-labeled neuropilin-binding peptide for targeted tumor imaging.

Neuropilin-1 (NRP-1) is overexpressed in several kinds of cancer cell and contributes to tumor aggressiveness. Recently, the arginine/lysine-rich peptide with C-terminal motifs (R/K)XX(R/K) indicated promising penetrating and transporting capability into NRP-1 positive cancer cells. In the present study, we describe a 131 I-labeled C-end rule motif peptide conjugate, Tyr-tLyp-1, for NRP-1 positive tumor targeting and imaging properties. Briefly, a truncated Lyp-1 peptide was designed to expose its C-end motif and conjugated to tyrosine for radiolabeling after structural modification. The peptide indicated specific binding to A549 cancer cells at 2 µM concentration, and its binding was dependent on NRP-1 expression and could be inhibited by other NRP-1-binding peptides. In vivo imaging of 131 I-labeled Tyr-tLyp-1peptide showed that a subcutaneous A549 xenograft tumor could be visualized using a SPECT/CT scanner. The tumor uptake of 131 I-Tyr-tLyp-1 was 4.77 times higher than the uptake in muscles by SPECT/CT software quantification at 6 h post injection. Together, this study indicated that truncated Lyp-1 peptide could specifically localize in NRP-1 positive tumors and successfully mediate the 131 I radionuclide diagnosis, indicating promising targeted imaging capability for NRP-1 positive tumors. Copyright © 2016 John Wiley & Sons, Ltd.

A novel 12, 23-epoxy dammarane saponin from Panax notoginseng.

The present study investigated the chemical constituents of the roots and rhizomes of Panax notoginseng. Compounds were isolated by various column chromatographic methods, and their structures were elucidated by the extensive analysis of spectroscopic data and chemical evidences. A novel 12, 23-epoxy dammarane-type saponin, named epoxynotoginsenoside A (1), together with four known compounds (2-5), was isolated and characterized.

A novel strategy for rapid quantification of 20(S)-protopanaxatriol and 20(S)-protopanaxadiol saponins in Panax notoginseng P. ginseng and P. quinquefolium.

A novel strategy for the qualitative and quantitative determination of 20(S)-protopanaxatriol saponins (PTS) and 20(S)-protopanaxadiol saponins (PDS) in Panax notoginseng, Panax ginseng and Panax quinquefolium, based on the overlapping peaks of main components of PTS (calibrated by ginsenoside Rg1) and PDS (calibrated by ginsenoside Rb1), was proposed. The analysis was performed by using high-performance liquid chromatography coupled with evaporative light scattering detection (HPLC-ELSD). Under specific chromatographic conditions, all samples showed two overlapping peaks containing several main ginsenosides belonging to PTS and PDS, respectively. The overlapping peaks were also identified by using HPLC-MS. Based on the sum and ratio of PTS and PDS, 60 tested Panax samples were divided into three main clusters according to their species. The findings suggested that this strategy provides a simple and rapid approach to quantify PTS and PDS in Panax herbs.

Exploration and practice of tutor system in the operating room for new nurse training / 局解手术学杂志

Objective Through the introduction and implementation of the tutor system to explore nursing practice of cultivating and management methods in operating room. Methods The theoretical knowledge,operation ability,comprehensive ability,and quality of work and so on before and after the implementation of tutor system for new nurse training were compared. Results Tutor system has obviously im-proved the comprehensive quality of new nurses,such as the interpersonal and communication skills and the ability to analyze and solve prob-lem independently. Conclusion The tutor system is beneficial to the interaction between teachers and students,thus enhancing the profes-sional identity of the operating room nurses,reducing the loss of the specialized nursing talents,improving the quality of nursing and setting up a new adapted teacher-and-students mode for teaching and training in the operating room. So it is worthy of extending application.

Biological evaluation of 131I- and CF750-labeled Dmab(scFv)-Fc antibodies for xenograft imaging of CD25-positive tumors.

A Dmab(scFv)-Fc antibody containing the single chain variable fragment of a humanized daclizumab antibody and the Fc fragment of a human IgG1 antibody was produced via recombinant expression in Pichia pastoris. The Dmab(scFv)-Fc antibody forms a dimer in solution, and it specifically binds CD25-positive tumor cells and tumor tissues. For tumor imaging, the Dmab(scFv)-Fc antibody was labeled with the 131I isotope and CF750 fluorescent dye, respectively. After intravenous injection of mice bearing CD25-positive tumor xenografts, tumor uptake of the (131)I-Dmab(scFv)-Fc antibody was visible at 1 h, and clear images were obtained at 5 h using SPECT/CT. After systemic administration of the CF750-Dmab(scFv)-Fc antibody, tumor uptake was present as early as 1 h, and tumor xenografts could be kinetically imaged within 9 h after injection. These results indicate that the Dmab(scFv)-Fc antibody rapidly and specifically targets CD25-positive tumor cells, suggesting the potential of this antibody as an imaging agent for the diagnosis of lymphomatous-type ATLL.