Translationally controlled tumor protein (TCTP)is a small protein highly conserved in a variety of eukaryotic species.TCTP is overexpressed in various tumor cells and has been implicated in the regu-lation of cellular processes including apoptosis,DNA repair and drug resistance.By reviewing the recent pro-gress of TCTP research,TCTP is becoming an important regulator of DNA repair and a new molecular target for tumor therapy.

Objective To look for suitable short-term weight loss and long-term maintenance method for army cadres. Method A total of 142 patients with simple overweight and obesity were randomly selected as the research subjects, and were followed up for 2 years, 130 of them were valid for analysis, 97 were male, and 33 female, age 27-59 years, average(47.41±7.55)years. SPSS 16.0 was used for analysis. Repeated measurements analysis of variance was used for data analysis, K-related samples nonparametric test was used for enumeration data. Result The army cadres population weight intervention management model was divided into three stages. They were respectively intensified weight loss stage for 6 months, the consolidation of weight loss for 6 months, and self-management stage maintained for 12 months, totally 24 months. Variance analysis results showed that after two years of focused intervention and health management, the body mass index(BMI)fell from(27.42 ± 2.81)kg/m2 to(24.69 ± 2.63)kg/m2 (F=2 649.945, P<0.05), waist circumference decreased from(91.09±8.24)cm to(85.26±7.76)cm(F=1 207.248, P<0.05). Nonparametric test results showed that after two years intervention management the behavior patterns concerning physical exercise became better. Exercisers increased from 33.8%to 73.3%(H=68.448, P<0.05); proportion of smoking decreased from 38.5% to 20.0%(H=33.692, P<0.05); drinking alcohol decreased from 50.8%to 20.8%(H=59.128, P<0.05);high salt diet decreased from 39.2%to 23.1%(H=31.722, P<0.05);high-fat diet decreased from 46.2%to 27.7%(H=41.571, P<0.05). Conclusion The practice showed that the short-term intensified weight loss, long-term maintenance, exercise and psychological intervention, changed the cadres population from passive to active on the weight control and self-management with remarkable effects, therefore such intervention is worthy of promoting.

AIM: To observe the changes of sarcoplasmic reticulum Ca~(2+)-ATPase (SERCA), phospholamban (PLB) during heart failure after acute myocardial infarction (AMI) in rats and the effect of carvedilol. METHODS: Rats were randomly assigned to normal control group, sham-operation group, AMI group and carvedilol (CAR) group. 6 weeks later, in vivo hemodynamic, morphometry and SERCA, PLB mRNA and protein expression of myocytes were measured in all animals. RESULTS: In comparison with sham-operation group, LV end diastolic pressure (LVEDP) and weight of ventricles were increased, while maximal rate of rise and fall (?dp/dt) of LV pressure were decreased in AMI group. After treatment with carvedilol, these parameters were all improved. The mRNA and protein expression of SERCA were downregulated (P0.05). CONCLUSIONS: The changes of SERCA and PLB may be the important mechanism of contractile dysfunction in heart failure after AMI. Carvedilol is effective in preventing LV dysfunction after AMI. The molecular mechanism may be related with normalization of SERCA expression.

Objective· To compare the impacts on clinical efficiency and safety between 0.014 inch Synchro microwire and Transend microwire used during mechanical thrombectomy for acute ischemic stroke (AIS) caused by large artery occlusion.Methods· Forty-six patients undergoing mechanical thrombectomy with stent retrievers between October 2012 and January 2016 were included,who were classified into Synchro group (21cases) and Transend group (25 cases).The clinical outcome,procedure time,and safety were analyzed and compared between two groups.Results· The recanalization rates were similar between two groups (P=0.600),but time from puncture to vascular recanalization of Synchro group was much shorter than that of Transend goup (48.88 min vs 82.33 min,P=0.001).The rates of functional independence (modified Rankin scale score ≤ 2) were similar between two groups (P=1.000).There was no significant difference of the rates of post-procedure subarachnoid hemorrhage (PSAH) between two groups (P=1.000).However,there were two cases that had fatal subarachnoid hemorrhage with intracranial hematoma in Transend group,while there was only one case of mild subarachnoid hemorrhage who recovered well in Synchro group.Conclusion· Compared with Transend microwire,Synchro microwire can significantly shorten the procedure time of mechanical thrombectomy,and the risk of fatal subarachnoid hemorrhage is rather small.

AIK is a novel cationic peptide with potential antitumor activity. In order to construct the AIK expression vector by Gateway technology, and establish an optimal expression and purification method for recombinant AIK, a set of primers containing AttB sites were designed and used to create the AttB-TEV-FLAG-AIR fusion gene by overlapping PCR. The resulting fusion gene was cloned into the donor vector pDONR223 by attB and attP mediated recombination (BP reaction), then, transferred into the destination vector pDESTl 5 by attL and attR mediated recombination (LR reaction). All the cloning was verified by both colony PCR and DNA sequencing. The BL21 F. coli transformed by the GST-AIR expression plasmid was used to express the GST-AIK fusion protein with IPTG induction and the induction conditions were optimized. GST-AIR fusion protein was purified by glutathione magnetic beads, followed by rTEV cleavage to remove GST tag and MTS assay to test the growth inhibition activity of the recombinant AIR on human leukemia HL-60 cells. We found that a high level of soluble expression of GST-AIK protein (more than 30% out of the total bacterial proteins) was achieved upon 0.1 mmol/L ITPG induction for 4 h at 37 °C in the transformed BL21 F. coli with starting OD₆₀₀ at 1.0. Through GST affinity purification and rTEV cleavage, the purity of the resulting recombinant AIK was greater than 95%. And the MTS assays on HL-60 cells confirmed that the recombinant AIK retains an antitumor activity at a level similar to the chemically synthesized AIK. Taken together, we have established a method for expression and purification of recombinant AIK with a potent activity against tumor cells, which will be beneficial for the large-scale production and application of recombinant AIK in the future.
Antimicrobial Cationic Peptides ; biosynthesis ; Antineoplastic Agents ; metabolism ; Escherichia coli ; metabolism ; Genetic Vectors ; HL-60 Cells ; Humans ; Polymerase Chain Reaction ; Recombinant Proteins ; biosynthesis ; Sequence Analysis, DNA

Timely reporting, effective analyses and rapid distribution of surveillance data can assist in detecting the aberration of disease occurrence and further facilitate a timely response. In China, a new nationwide web-based automated system for outbreak detection and rapid response was developed in 2008. The China Infectious Disease Automated-alert and Response System (CIDARS) was developed by the Chinese Center for Disease Control and Prevention based on the surveillance data from the existing electronic National Notifiable Infectious Diseases Reporting Information System (NIDRIS) started in 2004. NIDRIS greatly improved the timeliness and completeness of data reporting with real time reporting information via the Internet. CIDARS further facilitates the data analysis, aberration detection, signal dissemination, signal response and information communication needed by public health departments across the country. In CIDARS, three aberration detection methods are used to detect the unusual occurrence of 28 notifiable infectious diseases at the county level and to transmit that information either in real-time or on a daily basis. The Internet, computers and mobile phones are used to accomplish rapid signal generation and dissemination, timely reporting and reviewing of the signal response results. CIDARS has been used nationwide since 2008; all Centers for Disease Control and Prevention (CDC) in China at the county, prefecture, provincial and national levels are involved in the system. It assists with early outbreak detection at the local level and prompts reporting of unusual disease occurrences or potential outbreaks to CDCs throughout the country.

Hepatitis B virus (HBV) infection can cause the severe threat to the health of the people around the world. It depends upon the development of efficient diagnostic reagent and vaccine to prevent the prevalence of HB. In this study, we constructed the high expression recombinant Pichia pastoris and performed the screening tests in shake flasks to obtain the optimal values of several key fermentation parameters. Based on their effects on the growth and expression level of recombinant strains, FBS was the optimal industrial medium. The optimal values for the dissolve oxygen (DO), the final concentrations of methanol and the pH values were 50 mL, 1% (V/V) and 5.4-6.0, respectively. The optimal values of the parameters simulated in shake flasks were successfully scaled up to 10 L bioreactors to achieve high-throughput production: 310 OD600 in biomass and 27 mg/L in recombinant HBsAg. The expressed recombinant HBsAg in P. Pastoris was confirmed by SDS-PAGE and Western blotting. Electron microscopy examination showed that the purified protein could be self-assembled to 22 nm virus-like particles. The results provided a basis for industrial scale-up production of diagnostic reagent and vaccine of next generation against HB.
Bioreactors ; Fermentation ; Hepatitis B Surface Antigens ; biosynthesis ; genetics ; Humans ; Pichia ; genetics ; metabolism ; Recombinant Proteins ; biosynthesis ; genetics

Objective:To investigate the current situation and influencing factors of patients′ satisfaction with nursing humanistic care, and to provide reference for improving the quality of such care provided by hospitals.Methods:From July to August 2022, outpatients and inpatients in 30 provinces were selected by multi-stage stratified sampling as the survey objects. A cross-sectional survey was conducted on an online platform, using the general information questionnaire and Chinese version of methodist health care system nurse caring instrument revised by the research group. The latter instrument consists of 12 dimensions. namely care coordination, competence, teaching/learning, emotional support, respect for individuality, physical comfort, availability, helping/trusting relationship, patient/family engagement, physical environment, spiritual environment and outcomes. Descriptive analysis was performed on the data collected by the questionnaires, and independent sample t-test and one-way ANOVA were used to analyze the influencing factors of patient satisfaction. Results:A total of 107 hospitals were selected for questionnaire survey, including 86 tertiary hospitals and 21 secondary hospitals, and 29 108 valid questionnaires were recovered. The patient satisfaction with nursing humanistic care scored (5.40±0.86); the top three dimensions were competence (5.50±0.89), emotional support (5.47±0.88) and helping/trusting relationship (5.46±0.86); the lowest scoring dimensions were teaching/learning (5.38±1.01), spiritual environment (5.36±1.04) and patient/family engagement (5.11±1.28). Differences with gender, age, marital status, child status, educational level, occupation, place of residence, economic region, per capita monthly income of the family, type of medical insurance, medical department visited and surgery or not presented significant differences on the patient satisfaction with nursing humanistic care scores ( P<0.05). Conclusions:The satisfaction of patients with hospital′s nursing humanistic care in China was at the middle to upper level. In the future, health education for patients should be strengthened, and a mode of family-engaged nursing humanistic care should be constructed in line with the Chinese cultural background. In the process of nursing services, the particularity of patient groups should be considered to better meet their needs.

Objective: To study the effect of continuous nursing care on quality of life in patients with rheumatoid arthritis after discharge. Methods: Patients with rheumatoid arthritis who were admitted to hospital from August 2016 to August 2017 were selected as the study subjects. According to the random number table method, they were divided into the control group and the research group, and the lost cases were eliminated. There were 99 cases in the control group and 94 cases in the research group. The control group was given routine care, and the research group conducted continuous nursing care measures on the basis of the control group. The morning stiffness time, pain score, disease activity, patient health status and nursing satisfaction of the two groups were observed before and 6 weeks after discharge. Results: Six weeks after discharge, the morning stiffness time (23.76±12.76) min of the research group was significantly higher than that of the control group (38.22±14.53) min, the difference was statistically significant (t=3.865, P<0.05). Six weeks after discharge, the VAS (2.01±0.68) and HAQ (0.42±0.34) points of the research group were lower than those of the control group (4.17±1.30), (0.92±0.63) points, the difference was statistically significant (t=4.073, 3.916, P<0.05). The nursing satisfaction of the research group was 94.68%(89/94), and that of the control group was 78.79%(78/99), and the difference was statistically significant (χ²=9.416, P < 0.05). Conclusions The implementation of continuous care mode after discharge from patients with rheumatoid arthritis is beneficial to alleviate clinical symptoms such as morning stiffness and pain. Moreover, it can also improve patient health and quality of life, increase risk of disease progression, and care satisfaction is high which can help to protect the harmony between nurses and patients.

Objective To establish a weightlessness simulation animal model using miniature pigs, leveraging the characteristic of multiple systems’ tissue structures and functions similar to those of humans, and to observe pathophysiological changes, providing a new method for aerospace research. Methods Nine standard-grade miniature pigs were selected and randomly divided into an experimental group (n=7) and a control group (n=2). The experimental group was fixed using customized metal cages, with canvas slings suspending their hind limbs off the ground, and the body positioned at a -20° angle relative to the ground to simulate unloading for 30 days (24 hours a day). Data on body weight, blood volume, and blood biochemistry indicators were collected at different time points for statistical analysis of basic physiological changes. After the experiment, the miniature pigs were euthanized and tissue samples were collected for histopathological observation of the cardiovascular, skeletal and muscle systems HE and Masson staining. Statistical analysis was also conducted on the thickness of arterial vessels and the diameter of skeletal muscle fibers. Additionally, western blotting was employed to detect the expression levels of skeletal muscle atrophy-related proteins, including muscle-specific RING finger protein 1 (MuRf-1) and muscle atrophy F-box (MAFbx, as known as Atrogin-1), while immunohistochemistry was used to detect the expression of glial fibrillary acidic protein (GFAP), an indicator of astrocyte activation in the brain, reflecting the pathophysiological functional changes across systems. Results After hindlimb unloading, the experimental group showed significant decreases in body weight (P<0.001) and blood volume (P<0.01). During the experiment, hemoglobin, hematocrit, and red blood cell count levels significantly decreased (P<0.05) but gradually recovered. The expression levels of alanine aminotransferase and γ-glutamyltransferase initially decreased (P<0.05) before rebounding, while albumin significantly decreased (P<0.001) and globulin significantly increased (P<0.01). Creatinine significantly decreased (P<0.05). The average diameter of gastrocnemius muscle fibers in the experimental group significantly shortened (P<0.05), with a leftward shift in the distribution of muscle fiber diameters and an increase in small-diameter muscle fibers. Simultaneously, Atrogin-1 expression in the gastrocnemius and paravertebral muscles significantly increased (P<0.05). These changes are generally consistent with the effects of weightlessness on humans and animals in space. Furthermore, degenerative changes were observed in some neurons of the cortical parietal lobe, frontal lobe, and hippocampal regions of the experimental group, with a slight reduction in the number of Purkinje cells in the cerebellar region, and a significant enhancement of GFAP-positive signals in the hippocampal area (P<0.05). Conclusion Miniature pigs subjected to a -20° angle hind limb unloading for 30 days maybe serve as a new animal model for simulating weightlessness, applicable to related aerospace research.