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Objective:To understand the quality of life of high risk population of stroke in community and analyze the influencing factors.Methods:Four community health service centers in Huangpu District were randomly selected, and the subjects were included by using convenient sampling method among the high risk groups of stroke found in the community stroke screening and prevention and control project in Shanghai.The World Health Organization quality of life scale-brief form questionnaire(WHOQOL-BREF), self-rating depression scale (SDS) and self-rating anxiety scale (SAS) were used as the survey tools to study 1200 high-risk stroke subjects.Single sample t-test was used to compare the differences between the scores and the data of 24 centers in the world, and multiple linear stepwise regression were used to analyze the influencing factors. Results:The scores of physical field, psychological field and social relationship field ((13.60±1.86), (14.58±1.97), (13.72±2.10)respectively) of high-risk population of stroke were lower than the scores of general population of 24 centers in the world ( P<0.01), and the scores of environmental field (14.08±1.95) were higher than it ( P<0.01), of which the differences were all statistically significant.The results of multiple linear stepwise regression analysis showed that old age, anxiety and depression were the risk factors influencing the scores of physical field( β=-0.027, -0.056, -0.051), psychological field( β=-0.019, -0.055, -0.050) and environmental field( β=-0.017, -0.040, -0.054); old age and depression were the risk factors influencing the scores of social relationship field( β=-0.026, -0.067); anxiety and depression were the risk factors influencing the self-assessment of quality of life and health ( β=-0.012, -0.014 for quality of life; -0.012, -0.014 for health, all P<0.01). Conclusion:The quality of life of high-risk population of stroke may be related to age, depression, anxiety and other psychological factors.The prevention and treatment of stroke should take both physical and mental measures, take timely intervention for poor psychological status, and gradually improve the quality of life.
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Arginine kinase (AK) is a key enzyme in energy metabolism of invertebrates and plays an important regulatory role in the life activities such as growth and development, nutrition utilization, immune resistance and stress response. Arginine kinase of Bombyx mori (BmAK) is related to the energy balance and anti-NPV process, but there is little research on its molecular structure and enzymatic properties. We cloned the ORF sequence of BmAK gene, and analyzed chromosomal localization, genomic structure, mRNA structure, secondary and tertiary structure. Phylogenetic analysis indicated that AK was highly conserved in evolution. Soluble recombinant BmAK was obtained by prokaryotic expression, and purified by Ni-NTA affinity chromatography. The circular dichroism spectroscopy showed that BmAK contained α-helix structures, and its α-helix structures were relatively stable in the pH range between 5 and 10. Enzyme activity analysis showed that the optimum temperature of BmAK was 30 ℃ and the optimum pH of BmAK was 7.5. The optimal temperature of BmAK was 25 ℃. Between 15 ℃ and 30 ℃, the structure and activity of BmAK was relatively stable. The structure of BmAK was relatively stable at pH 7.0. Our findings reveal the structure and function of BmAK to develop novel green safe and environmentally friendly insecticides.
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Protein tyrosine phosphatase (PTP, EC 3.1.3.48) specifically catalyzes the removal of phosphate groups from phosphorylated tyrosine residues, resulting in protein dephosphorylation, thus regulates life activities such as cell growth, proliferation, differentiation and immunization. Protein tyrosine phosphatase h of Bombyx mori (BmPTP-h) is involved in the replication of nucleopolyhedrovirus (NPV) in Bombyx mori, but the structure and properties of BmPTP-h are little known so far. In this study, the coding sequence of BmPTP-h gene was cloned from the midgut of Bombyx mori, and its genomic structure, mRNA structure, sequence signature, secondary structure and the state in solution were analyzed. Homologous amino acid sequences alignment analysis indicated that BmPTP-h had a high similarity to PTP sequences of numbers of insect NPVs, implying that they may have a common ancestor and similar function. We constructed a prokaryotic expression vector, expressed and obtained the soluble recombinant BmPTP-h in Escherichia coli at 25 ℃, and purified BmPTP-h using Ni-NTA affinity chromatography. Gel filtration analysis showed that BmPTP-h was able to form aggregate and monomer in solution. Circular dichroism spectroscopy analysis showed that the recombinant BmPTP-h contained α-helix structure. Increasing temperature resulted in the unfolding of the α-helix structure of BmPTP-h and the decrease of the α-helix structure content of BmPTP-h. These studies provide a basis to better study the structure and regulation mechanism of BmPTP-h.
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Basic helix loop helix (bHLH) transcription factor plays an important role in biological processes. Bmsage is a class of bHLH transcription factor highly expressed in the silk gland of Bombyx mori, which is not only involved in the developmental regulation of the silk gland cells at the embryonic period, but also plays a crucial regulatory role during the synthesis of silk protein. However, currently, much of the property and structure of Bmsage is still remained unknown. To study the property, structure and biological role of Bmsage, we constructed several prokaryotic expression vectors of Bmsage fused with NusA, MBP, SUMO, Trx and His tags, respectively, then screened and determined the best soluble expression vector and condition of Bmsage in Escherichia coli combining with the induction temperature and IPTG concentration, and further purified the recombinant Bmsage by Ni-column affinity chromatography according to the established expression condition and characterized its secondary structure using circular dichroism spectra. The results showed that NusA and MBP could significantly enhance the soluble expression of Bmsage in E. coli, but it was difficult to separate Bmsage from these tags. SUMO could not only increase the soluble expression of Bmsage in E. coli to a certain degree, but also be effectively separated from Bmsage. Other tags did not effectively promote the soluble expression of Bmsage in E. coli. Circular dichroism spectra showed that the purified Bmsage had well-defined α-helix structure in solution, indicating that SUMO may promote the correct folding of Bmsage into native-like structure. These work not only establish a foundation for further study of the property, structure and function of Bmsage, but also provide a reference for the expression and purification of other similar proteins.
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The psychiatric problem has become a global public health issue. The model of mental health service advocate that“Treatment of disease occurred in the hospital, but rehabilitation and management in the community”. This brings great challenge to the community health service center. By comparing the domestic and foreign mental health service system, this paper discusses the necessity of carrying out the standardized training of general practitioners in psychiatry and psychology.
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Objective To select the optimal acupoints formula by evaluating the efficacy of different groups of acupoints in the treatment of post-stroke depression (PSD) with acupuncture. Method Totally 108 PSD patients were randomized into 3 groups, i.e. Neiguan (PC6) group, Taichong (LR3) group, and Baihui (GV20) group, 36 cases each. The acupuncture treatment was given once a day, 5 sessions a week, 3 weeks as a treatment course. The clinical efficacies were compared among the 3 groups after the intervention. The 3 groups were evaluated by the Hamilton Depression Scale (HAMD), National Institute of Health Stroke Scale (NIHSS), and Quality of Life Scale (QOL) before and after the treatment, and the results were statistically analyzed. Result The effective rates were respectively 72.2%, 75.0%, and 86.1%in Neiguan group, Taichong group, and Baihui group, and the inter-group differences were statistically significant (P0.05). Conclusion The three groups of acupoints are effective in improving the depression symptoms, neural defect and QOL, while Baihui group can produce a more significant efficacy in improving the depression symptoms compared to Neiguan and Taichong groups;the effects in improving neural defect and QOL are equivalent among the 3 groups of acupoints.