BACKGROUND:The 5-hydroxytryptamine system is one of the earliest-developing systems in mammals,playing crucial roles in diverse physiological processes throughout the entire life cycle.Traditionally,research on 5-hydroxytryptamine has primarily focused on its regulatory roles in physiological processes and central nervous system-related diseases.However,recent studies have also highlighted the significant roles of the 5-hydroxytryptamine system in the regenerative medicine.OBJECTIVE:To review the reparative functions of the central 5-hydroxytryptamine system in brain injury,spinal cord injury,and bone remodeling,as well as the roles of the peripheral 5-HT system in the regeneration and repair of tissues such as the liver,pancreas,intestines,and skin,thereby offering new insights into the development of therapeutic strategies in stem cell therapy,tissue engineering,and regenerative medicine.METHODS:A comprehensive literature search was conducted using the databases"PubMed"and"Google Scholar."The search terms included:"5-HT,""regeneration,""tissue repair,""5-HT and tissue repair,""brain injury,""spinal cord injury,""bone reconstruction,""liver regeneration,""enteric nerve regeneration,""tissue fibrosis,""pancreatic regeneration,""skin repair,"and"inflammation."Based on the inclusion and exclusion criteria,118 articles and books were finally included for review and analysis.RESULTS AND CONCLUSION:(1)The central 5-hydroxytryptamine system facilitates cellular regeneration in injuries such as brain damage,spinal cord injury,and bone remodeling,thereby promoting tissue repair following injuries.(2)The peripheral 5-hydroxytryptamine system plays a positive role in the repair of tissues such as the liver,pancreas,intestines,and skin.(3)However,the 5-hydroxytryptamine system also exhibits adverse effects in tissue repair and regeneration,such as promoting tissue fibrosis and exacerbating inflammation.Therefore,it should be used with caution.

BACKGROUND:The 5-hydroxytryptamine system is one of the earliest-developing systems in mammals,playing crucial roles in diverse physiological processes throughout the entire life cycle.Traditionally,research on 5-hydroxytryptamine has primarily focused on its regulatory roles in physiological processes and central nervous system-related diseases.However,recent studies have also highlighted the significant roles of the 5-hydroxytryptamine system in the regenerative medicine.OBJECTIVE:To review the reparative functions of the central 5-hydroxytryptamine system in brain injury,spinal cord injury,and bone remodeling,as well as the roles of the peripheral 5-HT system in the regeneration and repair of tissues such as the liver,pancreas,intestines,and skin,thereby offering new insights into the development of therapeutic strategies in stem cell therapy,tissue engineering,and regenerative medicine.METHODS:A comprehensive literature search was conducted using the databases"PubMed"and"Google Scholar."The search terms included:"5-HT,""regeneration,""tissue repair,""5-HT and tissue repair,""brain injury,""spinal cord injury,""bone reconstruction,""liver regeneration,""enteric nerve regeneration,""tissue fibrosis,""pancreatic regeneration,""skin repair,"and"inflammation."Based on the inclusion and exclusion criteria,118 articles and books were finally included for review and analysis.RESULTS AND CONCLUSION:(1)The central 5-hydroxytryptamine system facilitates cellular regeneration in injuries such as brain damage,spinal cord injury,and bone remodeling,thereby promoting tissue repair following injuries.(2)The peripheral 5-hydroxytryptamine system plays a positive role in the repair of tissues such as the liver,pancreas,intestines,and skin.(3)However,the 5-hydroxytryptamine system also exhibits adverse effects in tissue repair and regeneration,such as promoting tissue fibrosis and exacerbating inflammation.Therefore,it should be used with caution.

Objective:To investigate the difference in brain activity intensity between methamphetamine (MA) dependent patients (MA group) and healthy controls (control group) using fractional amplitude of low-frequency fluctuation (fALFF), and to establish a classification model between these two groups using support vector machine (SVM).Methods:From February 2014 to October 2019, a total of 46 male MA-dependent patients and 46 male healthy controls were recruited from the Affiliated Kangning Hospital of Ningbo University. The study collected resting-state functional magnetic resonance imaging (rs-fMRI) data and analyzed the differences in brain functional activity between the two groups. This analysis was conducted using both static and dynamic fractional amplitude of low-frequency fluctuations (d-fALFF). Additionally, the study examined the correlation between fALFF/d-fALFF values in specific brain regions and the total scores, as well as each factor score, of the Brief Psychiatric Rating Scale (BPRS). Furthermore, the relationship between fALFF/d-fALFF values and the age of first use and total dose of MA in the MA group was investigated. Finally, the fALFF map and d-fALFF map of brain regions with significant differences between groups were used as features for constructing classification.Results:Compared to the healthy control group, those dependent on MA showed significantly increased fALFF mainly in the nucleus accumbens, caudate nucleus, thalamus, and amygdala nucleus( t=-5.21--2.72, all P<0.05). The MA group exhibited decreased fALFF in the superior frontal gyrus, middle frontal gyrus, orbital gyrus, and cingulate gyrus( t=3.59-5.00, all P<0.05). Most of the brain regions with decreased d-fALFF overlapped with those exhibiting decreased fALFF( t=3.33-4.87, all P<0.05). The results of the correlation analysis showed that the fALFF value of the right nucleus accumbens was positively correlated with the age of first use of MA ( r=0.537, P<0.001). There is no significant relationship between the abnormal fALFF and d-fALFF values in the MA group and the total scores and each factor scores of BPRS, as well as the total dose of MA taken (after removing outliers). Based on fALFF and d-fALFF values, the SVM classifier achieved accuracies of 90.33%±6.89% and 71.56%±7.80%, respectively. Conclusions:There are significant abnormalities in the low-frequency fluctuation of the resting brain in patients dependent on MA. These abnormalities reflect the rigidity of prefrontal cortex activity, functional impairment, and dysfunction of the anti-reward system. These factors may be one of the causes for MA dependent behavior and repeated episodes. In addition, the fALFF values may be helpful for distinguishing MA dependent individuals from the control group.

Objective:To investigate the difference in brain activity intensity between methamphetamine (MA) dependent patients (MA group) and healthy controls (control group) using fractional amplitude of low-frequency fluctuation (fALFF), and to establish a classification model between these two groups using support vector machine (SVM).Methods:From February 2014 to October 2019, a total of 46 male MA-dependent patients and 46 male healthy controls were recruited from the Affiliated Kangning Hospital of Ningbo University. The study collected resting-state functional magnetic resonance imaging (rs-fMRI) data and analyzed the differences in brain functional activity between the two groups. This analysis was conducted using both static and dynamic fractional amplitude of low-frequency fluctuations (d-fALFF). Additionally, the study examined the correlation between fALFF/d-fALFF values in specific brain regions and the total scores, as well as each factor score, of the Brief Psychiatric Rating Scale (BPRS). Furthermore, the relationship between fALFF/d-fALFF values and the age of first use and total dose of MA in the MA group was investigated. Finally, the fALFF map and d-fALFF map of brain regions with significant differences between groups were used as features for constructing classification.Results:Compared to the healthy control group, those dependent on MA showed significantly increased fALFF mainly in the nucleus accumbens, caudate nucleus, thalamus, and amygdala nucleus( t=-5.21--2.72, all P<0.05). The MA group exhibited decreased fALFF in the superior frontal gyrus, middle frontal gyrus, orbital gyrus, and cingulate gyrus( t=3.59-5.00, all P<0.05). Most of the brain regions with decreased d-fALFF overlapped with those exhibiting decreased fALFF( t=3.33-4.87, all P<0.05). The results of the correlation analysis showed that the fALFF value of the right nucleus accumbens was positively correlated with the age of first use of MA ( r=0.537, P<0.001). There is no significant relationship between the abnormal fALFF and d-fALFF values in the MA group and the total scores and each factor scores of BPRS, as well as the total dose of MA taken (after removing outliers). Based on fALFF and d-fALFF values, the SVM classifier achieved accuracies of 90.33%±6.89% and 71.56%±7.80%, respectively. Conclusions:There are significant abnormalities in the low-frequency fluctuation of the resting brain in patients dependent on MA. These abnormalities reflect the rigidity of prefrontal cortex activity, functional impairment, and dysfunction of the anti-reward system. These factors may be one of the causes for MA dependent behavior and repeated episodes. In addition, the fALFF values may be helpful for distinguishing MA dependent individuals from the control group.

Objective:To analyze the influenza vaccination status of chronic disease management patients in Qingpu district of Shanghai and the vaccination characteristics of different characteristic populations, so as to provide scientific basis for improving the influenza vaccination rate of chronic disease patients in the community.Methods:By comparing the data of Shanghai chronic disease management information system, immunization planning information system and medical association platform, 89 453 subjects who met the inclusion and exclusion criteria in Qingpu district were selected as the research objects. The vaccination coverage rate of the study subjects was calculated according to gender, age group, urban and rural distribution, occupation, chronic disease type and quantity, and the vaccination coverage rate of different subgroups was compared to analyze the influencing factors of vaccination coverage rate.Results:Most of the 89 453 patients with chronic diseases were 60 years old and above (71.93%). Patients with hypertension, diabetes, chronic obstructive pulmoriary disease (COPD) and three chronic diseases accounted for 87.12%, 28.67%, 8.71% and 1.83%, respectively. Influenza vaccination coverage in the 2016/2017 flu season was low, at 0.32%. Influenza vaccination coverage rate of women (0.37%) was higher than that of men (0.27%), which was 1.41 times respectively(95% CI: 1.16, 1.72) that of men patients. The coverage rate of influenza vaccination for the 70-79 year-old group was the highest (0.74%), which was 1.74 times respectively(95% CI: 1.39, 2.19) that of 60-69 year-old patients. The vaccination coverage rate of government departments and institutions was the highest (1.14%), which was 12.58 times respectively(95% CI: 4.52, 34.99) that of retirees. The vaccination rate of COPD patients (3.68%) was 2.50 times (95% CI: 1.66, 3.77) higher than that of patients without COPD.Conclusions:Influenza vaccination rate for chronic disease management patients in Qingpu district of Shanghai is low. Gender, occupation, age and types of chronic diseases are the influencing factors. Patients with chronic disease management should be included in the priority vaccination targets for influenza vaccines, and vaccination intervention for occupational chronic diseases such as non-retired agriculture and forestry patients, especially male patients, should be strengthened to improve influenza vaccination coverage rate.

Objective:To investigate the correlation between serum PCT and CRP levels and clinical outcome in patients with acute brucellosis.Methods:From June 2014 to June 2020, 73 patients with acute brucellosis diagnosed in Anji County People's Hospital, Huzhou City were selected as acute brucellosis group and 68 patients with chronic brucellosis as chronic brucellosis group; another 60 healthy people were selected as control group. The levels of serum PCT and CRP of each group were measured by chemiluminescence assay and immunoturbidimetric assay. Patients with acute brucellosis were treated with rifampicin, doxycycline and rifapentine capsules for 9 weeks. The levels of serum PCT and CRP in three groups and patients with acute brucellosis with different therapeutic effects were compared. Univariate and multivariate Cox regression analysis were used to analyze the related factors affecting the efficacy of patients with acute brucellosis. The area under curve (AUC) and cut-off value of receiver operating characteristic (ROC) curve of PCT and CRP were used to evaluate the diagnosis of acute brucellosis.Results:The levels of serum PCT and CRP in acute brucellosis group [(3.25±0.49) ng/ml, (31.28±6.56) mg/L] were higher than those in chronic brucellosis group [(0.12±0.05) ng/ml, (5.21±0.89) mg/L] and control group [(0.03±0.01) ng/ml, (2.63±0.37) mg/L], and those in chronic brucellosis group were higher than those in control group ( P < 0.05). In acute brucellosis patients, 56 cases were effective and 17 cases were ineffective. The levels of serum PCT and CRP in ineffective patients were higher than those in effective patients ( P < 0.05). Univariate Cox regression analysis showed that there were significant differences in leukocyte count, neutrophil count, PCT and CRP levels among acute brucellosis patients with different therapeutic effects ( P < 0.05). Multivariate Cox regression analysis showed that leukocyte count, neutrophil count, PCT and CRP levels were the risk factors for therapeutic effect ( P < 0.05). The diagnostic evaluation showed that the sensitivity and specificity of PCT in the diagnosis of acute brucellosis were 95.24% and 80.00%, respectively; and the sensitivity and specificity of CRP in the diagnosis of acute brucellosis were 93.10% and 80.00%, respectively. Conclusion:The levels of serum PCT and CRP in patients with acute brucellosis are significantly increased, and they are risk factors for therapeutic effect, which should be used as reference indexes for diagnosis and treatment of acute brucellosis.

Objective:To investigate the effects of methyltransferase-like protein 14 (METTL14)-mediated long-chain non-coding RNA EIF3J antisense RNA1 (Inc EIF3J-AS1) on the migration and invasion of cholangiocarcinoma cells and its mechanism.Methods:From September 2017 to December 2018, 10 pairs of cholangiocarcinoma and adjacent normal tissues were collected from the First Affiliated Hospital of Naval Medical University, which were surgically resected and pathologically confirmed. The expression of METTL14 mRNA and Inc EIF3J-AS1 in cholangiocarcinoma tissues was detected by fluorescence quantitative PCR, and the protein expression of METTL14 was detected by Western blotting. Cholangiocarcinoma cell lines HUCCTI and RBE were divided into control group and METTL14 or Inc EIF3J-AS1 knockdown group. The corresponding normal lentivirus was transfected in the control group, and METTL14 or Inc EIF3J-AS1 knockdown group was transfected with lentivirus that interfered with the expression of METTL14 or Inc EIF3J-AS1, respectively. Transwell assay was used to detect the ability of cell migration and invasion, and Western blotting was used to detect the expression of epidermal growth factor receptor (EGFR) and AKT protein.Results:The expressions of METTL14 mRNA and lnc EIF3J-AS1 in cholangiocarcinoma tissues were significantly higher than those in adjacent normal tissues (0.075±0.012 vs 0.031±0.006, 0.140±0.032 vs 0.064±0.012), and there was a positive correlation between expression of METTL4 mRNA and expression of lnc EIF3J-AS1 ( r=0.883, P=0.0007). The expression of METTL14 protein in cholangiocarcinoma tissues was higher than that in adjacent normal tissues (0.354±0.131 vs 0.187±0.183). Compared with the control group, the expression of lnc EIF3J-AS1 was significantly lower in METTL14 or Inc EIF3J-AS1 knockdown group (0.217±0.020 vs 1.000±0.052, 0.149±0.066 vs 1.000±0.045). The migration and invasion ability of cell lines HUCCTI and RBE decreased significantly in lnc EIF3J-AS1 knockout group (5.00±0.58 vs 23.33±0.33, 20.33±0.67 vs 70.67±0.33; 12.00±0.58 vs 25.00±2.52, 22.33±0.89 vs 43.67±0.33). The expression of EGFR and p-AKT/AKT protein were also significantly decreased (0.109±0.015 vs 1.000±0.018, 0.226±0.036 vs 1.000±0.051; 0.118±0.052 vs 1.000±0.069, 0.132±0.098 vs 1.000±0.023). The above differences were statistically significant (all P<0.05). Conclusions:Abnormal expression of lnc EIF3J-AS1 in cholangiocarcinoma mediated by METTL14 can promote tumor cell migration and invasion.

Objective To explore the effect of drug injection under bronchoscopy on the retreatment of smear positive cavitary pulmonary tuberculosis. Methods From June 2016 to December 2017,164 cases of pul-monary tuberculosis with smear Yang cavity type were selected,which were divided into 2 groups according to the random digital table method,each groups has 82 cases.The control group received routine treatment,the observa-tion group underwent bronchoscopy with Kangfuxin Liquid combined with drug injection therapy.The clinical effect of the two groups,the changes of lung function before and after treatment and the improvement of clinical symp-toms were compared.Results The clinical curative effect of the treatment group was better than the control group, which difference was statistically significant(P < 0.05). FEV1,FEV1/FVC,PEF index in the observation group were better than the control group,which difference was statistically significant(P<0.05).The complication rate of observation group was lower than the control group,which difference was statistically significant(P < 0.05). Conclusion Drug injection under bronchoscopy can significantly improve the clinical efficacy and lung function and promote clinical symptoms in patients with retreated smear positive pulmonary tuberculosis.It is worthy of popu-larization and application.

Under the condition of field operation,a folding rack should be designed for the multi-functional sickbed (YZ-BC03A) and combined the rack and sickbed together. The folding rack can be fixed bedside the bed and integrated with the beds into one,which would solve problems such as too many nursing items,no suitable place for placement and inconvenient operation. This folding rack was featured with convenient use,simple operation,easy to carry,saved transportation power and shortened setup time. Meanwhile,this rack also had advantages such as practical,uneasy to lost,low cost,no volume occupation or space limitation after unfolding. It satisfies the demands of diagnosis and nursing under the condition of field operation.

Objective To investigate the expression and significance of aromatase P450,COX-2,ER and PR in the patients with adenomysis.Methods The immunohistochemistry staining was used to detect the expression of aromatase P450,COX-2,ER and PR in ectopic endometrium and eutopic endometrium of 30 patients with adenomyosis and 30 cases in control group.Results The expression of aromatase P450,COX-2 in ectopic endometrium were significantly higher than those in eutopic endometrium (all P ＜ 0.05) ; The expression of ER,PR in ectopic endometrium were significantly lower than those in eutopic endometrium (all P ＜ 0.05),excepted the expression of PR in eutopic endometrium,the expressions of both ER and PR lose their periodical cycle.There was positive correlation between the expression of aromatase P450 and COX-2 in adenomysis group(P ＜ 0.05).In adenomyosis,the expression of aromatase P450,COX-2,ER and PR in dysmenorrhea subgroup were significantly higher than those in non-dys menorrhea subgroup(all P ＜ 0.05).Conclusion Aromatase P450,COX-2 and ER play important roles in the genesis and development of adenomyosis and dysmenorrheal,PR is not the main pathogenic factors of adenomyosis.The expressions of aromatase P450,COX-2 and ER in adenomyosis have nothing to do with endometrial cyclical change and are not subject to the regulation of ovarian hormones.