Pd nanoparticles (Pd NPs) were electrodeposited on the glassy carbon electrode (GCE). Then, Pd NPs/GCE was further inserted into H2 SO4 solution to polarize for 5 min to absorb a certain amount of active hydrogen. Then, the electrode was quickly inserted to HAuCl4 solution for 15 min. AuNPs were deposited spontaneously on the surface of Pd NPs due to the reduction of active hydrogen. As a result, Pd-AuNPs were modified on the surface of GCE. Next, aptamer I of thrombin was immobilized on Pd-Au nanoparticles. In the presence of thrombin, it bound with the aptamer immobilized on Pd-Au nanoparticles and thus the formed complex obstructed the catalysis of Pd-Au nanoparticles to H2 O2 . Hence, the reduction current of H2 O2 decreased with the increase of thrombin concentration. The aptamer sensor had a good linear relationship with the concentration of thrombin in the range of 2. 98-297 nmol/L with a detection limit of 0. 98 nmol/L.

Objective: To investigate the compliance of functional exercises and identify its influencing factors among young and middle-aged stroke patients, so as to provide insights into rehabilitation management among young and middle-aged stroke patients. Methods: Stroke patients at ages of 18 to 59 years were recruited from those receiving rehabilitation treatment in Tongde Hospital Affiliated to Zhejiang Chinese Medical University from January 2021 to June 2022. Participants' demographics and clinical data were collected through questionnaire surveys. The compliance of functional exercises was assessed using Stroke Functional Exercise Adherence Questionnaire, and patients' social support, exercise self-efficacy and depression were assessed using the Social Support Rating Scale, Exercise Self-efficacy Scale and Self-rating Depression Scale. The factors affecting functional exercise compliance were identified among young and middle-aged stroke patients with a multivariable linear regression model. Results: A total of 230 questionnaires were allocated and 213 valid questionnaires were recovered, with an effective recovery rate of 92.61%. The respondents included 129 men (60.56%) and 84 women (39.44%) and had a mean age of (53.49±7.95) years. The total score of functional exercise compliance was (41.37±9.11) points among the participants. Multivariable linear regression analysis identified education level (β'=0.376), monthly household income per capita (β'=0.309), history of stroke onset (β'=-0.238), rehabilitation instruction (β'=0.284), depression (β'=-0.261), exercise self-efficacy (β'=0.152), and social support level (β': 0.277 to 0.415) as factors affecting the functional exercise compliance among young and middle-aged stroke patients. Conclusion Education level, income, history of stroke onset, depression, exercise self-efficacy and social support may affect the compliance of exercise compliance among young and middle-aged stroke patients.

Aim To investigate whether the pain modi-fication by group I metabotropic glutamate receptors (mGluRs)required the involvement of Src homology-2 domain-containing phosphatase-2 (SHP-2 ).Methods Co-immunoprecipitation was performed to examine the possible interaction between SHP-2 and group I mGluRs in spinal cord dorsal horn of mice.By measur-ing the paw withdrawal thresholds,the effects of SHP-2 inhibitor NSC-87877 or its catalytically inactive SHP-2 (C459S ) mutant on allodynia induced by group I mGluRs agonist DHPG (50 nmol)were observed.Re-sults Anti-mGluR5 antibody was able to co-immuno-precipitate SHP-2 from spinal dorsal horn of mice, while no SHP-2 was precipitated by anti-mGluR1 anti-body.Inactivation of SHP-2 by NSC-87877 (6 nmol) or SHP-2 (C459S ) effectively attenuated allodynia caused by DHPG.Conclusion SHP-2 can physically interact with mGluR5.The activation of SHP-2 may be necessary for group I mGluRs to process the nocicep-tive information.

OBJECTIVE: To provide references for the improvement of drug recall system in China.METHODS: The problems existing in the drug recall system in China were analyzed through a comparison of the drug recall system between China and Australia.RESULTS & CONCLUSIONS: China should draw useful experiences from Australia to improve its drug recall system by perfecting the legal system and tracking measures,determining stratified drugs and the responsibilities of government etc.

Objective To explore the methods of labeling exogenous microglia with superparamagnetie iron oxide(SPIO)particles,and to monitor the labeled cells after transplantation into the normal rat and Alzheimer's disease(AD)model rat with MR scanning.Methods Microglia was labeled with SPIO particles by using transfection agent,hemagglutinating virus of Japan envelope(HVJ-E).Then the microglias which were labeled with SPIO were injected into the internal carotid artery of normal rat (n=5)and AD model rat(n=5).Three days after transplantation,follow-up serial T2*-weighted gradient-echo MR imaging was performed at 7.0T MRI system.MR images were correlated with histological findings.Results In the brain of normal rat,the labeled microglias were demonstrated as several dotty signalintensity decrease on T2*-weighted MR images.The dotty spots were sporadic around the brain.Histological analysis showed that most prussian blue staining-positive cells were well correlated with the area where a signal intensity decrease was observed in MRI.MR could detect the signal intensity change caused by a few labeled cells.In the brain of AD model rat,MR scan showed a well-defined hypointensity area in the region of Aβ42 iniection.Signal intensity decrease was not obvious in the region of saline injection.The number of iron-positive cells(454±47)/mm2 at sites of Aβ42 injection was much higher than that(83±13)/mm2 of saline injection(P＜0.05). Conclusion MR can be used as a non-invasive means of detecting transplanted labeled microglia in vivo,with the potential for future clinical application in cell therapy of AD.

Objective To construct staphylococcal enterotoxin D (SED) mutants expressed in Escherichia coli ( E. coli ). Methods The expected mutants were introduced into the SED DNA by megaprimer PCR method. The PCR products ligated to plasmid pTrcHis B were transformed into E. coli DH5? for IPTG induced expression. The target protein was purified by Ni NTA metal affinity chromatography and analyzed by SDS PAGE and immunoblotting. Results The sequencing results showed that mutant nucleic acids were successfully introduced at the expected sites of SED gene. SDS PAGE and immunoblotting confirmed that the proteins of SED mutants were obtained by Ni NTA metal affinity chromatography. The mutants were named as SEDN23A, SEDN23A/H26R, SEDF45A, SEDL59A, SEDN61A, SEDI92A, and SEDF203A, respectively. Conclusion Several SED mutants are successfully constructed, which lays a foundation for subsequent studies of immune recognition of SED.

Objective To explore the effects of Shenfu injection combined with low-dose hydrocortisone on plasma lev?els of human leukocyte antigen (HLA)-DR and procalcitonin (PCT) in patients with septic multiple organ dysfunction syn?drome. Methods A total of 118 patients with septic multiple organ dysfunction syndrome were divided into three groups:control group (n=39), experimental group 1 (n=39) and experimental group 2 (n=40). The control group received conventioanl medicine therapy, while the experimental group 1 received Shenfu injection (100 mL, 2/d, for 7 d) combined with conventio?anl medicine therapy, and the experimental group 2 received Shenfu injection combined with low-dose hydrocortisone (200 mg/d, for 14 d) besides conventional medicine therapy. The peripheral blood samples were collected for the detection of HLA-DR, PCT and lipoperoxide (LPO) before treatment, 1 d, 3 d amd 7 d after treatment. The mortality in 14 d was record?ed. Results The mortality rates in 14 d were 61.5%(24/39), 41.0%(16/39) and 25.0%(10/40) for control group, experimen?tal group 1 and experimental group 2 (χ2=8.15, P<0.05). There were no significant differences in PCT, HLA-DR and LPO levels before treatment and 1 d after treatment between the three groups (P>0.05). The plasma levels of PCT and LPO were significantly decreased in control group, experimental group 1 and experimental group 2 after 3-d and 7-d treatment, but the levels of HLA-DR was significantly increased (P < 0.05). Conclusion The combination therapy of Shenfu injection and low-dose hydrocortisone can effectively reduce PCT level and increase HLA-DR level, which promotes the improve?ment of patients with septic multiple organ dysfunction syndrome.

Objective 70 realize the fast collection and management of the basic wounded information in the field treatment. Methods Two-dimensional electronic medicine tag was used as a massage loader. The wounded information was analyzed with a program reader, and the basic personal and cure information were shared with the information management system. Result The system was used in the massive discipline for the first time, fulfilled the wounded information record, analysis, transfer, and the management of the cure information with 80 items. Conclusion The correctness of the basic massage record and analysis is full percent. The manage progress of the system accord with the field condition.

Objective To realize medical information collection and digital management in field battle and the fundamental information and cure of medical staff of emergency medical, equipment and the wounded were included in it. Methods The collecting information were transmitted to computer through wireless connection and manage the information with Delphi7 procedure. Results The system was used firstly in large-scale practice and completed the information transcription and management on elementary and cure in hundred of wounded. Conclusion The information is up to the mustard of field and it has established base on cure information in digital management.

Objective: To investigate the effects of a Chinese herbal formula for calming liver and suppressing yang on the protein expressions of vascular tissues in spontaneously hypertensive rats (SHRs), and to explore the mechanism of efficacy. Methods: Twenty SHRs were randomly divided into model group and treatment group. Another 10 Wistar-Kyoto rats were selected as a normal control. SHRs in the treatment group were administered with the formula for calming liver and suppressing Yang for 4 weeks. During the course of treatment, blood pressure and heart rates were monitored every week and the ethology of rats, including irritability and rotation endurance was also evaluated. After treatment, thoracic aorta was obtained and its proteins were separated by 2-dimensional gel electrophoresis (2-DE). The differentially expressed proteins were identified by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) and database query. Results: The formula for calming liver and suppressing yang not only decreased the systolic blood pressure and heart rate, but also improved irritability degree and rotation endurance time of SHRs. This experiment had established the 2-DE graph of protein expressions of vascular tissues in SHRs. Compared with the normal group, the expressions of 15 proteins were down-regulated, and 12 proteins were up-regulated in vascular tissues of the model group. The formula for calming liver and suppressing yang treatment up-regulated expressions of 10 proteins in the 15 down-regulated proteins, and down-regulated 8 proteins in the 12 up-regulated proteins in vascular tissues of SHRs. After analysis, 16 obviously differentially expressed proteins were found, and 13 of them were identified. Conclusion: The formula for calming liver and suppressing yang can improve the ethology of SHRs. The mechanism is probably concerned with regulating the protein expressions of vascular tissues.