Thermally Depolymerizable Polyether Electrolytes for Convenient and Low-Cost Recycling of LiTFSI.

Solid polymer electrolytes (SPEs) with LiTFSI (lithium bis(trifluoromethane sulfonimide)) are promising candidates for solid-state batteries, owing to their good interfacial contact with solid electrodes. Here, three copolymerized polyethers were prepared as SPEs, using the catalysts of SnF2 or SnF2 -LiPF6 . The thermal depolymerization of these polyethers was observed at elevated temperatures, which limits their operating temperature ranges. Once the catalyst is removed, the thermal degradation temperatures of these SPEs are raised by 30-55 °C, together with improved thermal performance in cells. For SPEs, the high price of LiTFSI is an obstacle for their large-scale application, and it's recycling is hindered by the strong interaction with polymers. By the thermal depolymerization of polyethers, LiTFSI can be easier reclaimed from above mentioned SPEs and even the commercial PEO(poly(ethylene-oxide)) based SPE in rates of 70-80 %, providing a low-cost strategy for the recycling of LiTFSI.

Positive Cofactor 4 as a Potential Radiation Biodosimeter for Early Assessment.

During a major radiation event, a large number of people need to be rapidly assessed for radiation damage to ensure effective medical treatment and efficient use of medical resources. However, current techniques cannot meet the requirement of rapid detection of large quantities of samples in an emergency. It is essential to develop rapid and accurate radiation biodosimeters in peripheral blood. Here, we identified radiation sensitive genes in mice by RNA sequencing and evaluated their utility as radiation biodosimeters in human cell lines. Mice were subjected to gamma-irradiation with different doses (0-8 Gy, .85 Gy/min), and the tail venous blood was analyzed by RNA sequencing. We have identified 5 genes with significantly differential expression after radiation exposure. We found that positive cofactor 4(PC4) had well correlation with radiation dose in human lymphoblastoid cell line after irradiation. The relative expression of PC4 gene showed a good linear correlation with the radiation dose after 1-5 Gy irradiation (.85 Gy/min). PC4 gene can be rapidly recruited to the DNA damage sites faster than γ-H2AX after radiation in immunofluorescence detection. In conclusion, PC4 may be represented as new radiation biological dosimeter for early assessment.

[Clinical Analysis of Joint Health Status of Patients with Hemophilia Treated on-Demand].

OBJECTIVE: To investigate the joint health status of patients with hemophilia treated on-demand and to analyze the incidence trend of hemophilic arthritis, so as to probide the scientific clinical data for furture study. METHODS: The clinical data of patients with hemophilia admitlted in Tianjin municipal first central hospital form March 2016 to October 2017 were collected, the basic information of patients was recorded; the joint health status was evaluated by using the hemophillia Joint Health Score (HJHS) 2.1; the life guality of patients was analyzed by using the MOS item short form-36 health survey, SF-36; the correlation of joint function with life guatity was analyzed by pearson correlation test. RESULTS: 196 ont of 210 patients with hemophila were treated on demand. The average age of patients was 27.81(2-73) years old, Among 196 patients, 189 was hemophilia A (96.43%) and 9 was hemophilia B (3.57). The patients without joint involvement, patients with 1 joint and 32 jionts involvement accounted for 3.57%, 11.72% and 84.71% respectively. The incidonce of involvement in elbow, knae and ankle joints was 71.93%, 80.61% and 82.91% respectively. The joint invlvement rate in patients with mild, intermediate and severe hemphilia accounted for 61.66%, 72.40% and 80.73% respectively. The mean HJHS in intermediate and severe henophilia patients was 23.59±17.02 scores and 26.69±17.68 scores respectively, there was no statistical difference (P>0.05). The joint fanction in hemophilia patients negatively correlated with life gnality of patients (r = 0.076). CONCLUSION: The incidence of arthritis in hemophilia patients is high, and at least 1 joint has been involved in patients aged over 10 years old, moreover the multiple joint involvement exrsts in most patients. The impairment of joint function affects the routine behavious and activities.

Assessment of muscarinic and nicotinic acetylcholine receptor expression in primitive neuroectodermal tumor/ewing family of tumor and desmoplastic small round cell tumor: an immunohistochemical and Western blot study of tissue microarray and cell lines.

The primitive neuroectodermal tumor (PNET)/Ewing family of tumors (EFT) and desmoplastic small round cell tumor (DSRCT) portend a grave prognosis. Ongoing research in similar neurocrest-derived neoplasms has implicated both the muscarinic acetylcholine receptor (mAChR) and nicotinic acetylcholine receptor (nAChR) in the pathogenesis of these neoplasms. Acetylcholine has been reported to impart a modulatory effect on chemotaxis and proliferation, an effect ameliorated by anticholinergic drugs. The aim of our study is to characterize the pattern of expression of mAChR and nAChR in PNET/EFT and DSRCT, in hopes of discovering a potential target for therapeutic improvements. We examined 34 cases of PNET/EFT and 2 DSRCT retrospectively by immunohistochemical studies. We found that AChRs are overexpressed in a significant number of PNET/EFT and DSRCT. The Western blot analysis of 3 human Ewing sarcoma cell lines confirms the presence of AChRs. Future studies are planned to confirm these results as well as to investigate their potential therapeutic implications.