Normal heart function depends on complex regulation by the brain, and abnormalities in the brain‒heart axis affect various diseases, such as myocardial infarction and anxiety disorders. However, systematic tracking of the brain regions associated with the input and output of the heart is lacking. In this study, we injected retrograde transsynaptic pseudorabies virus (PRV) and anterograde transsynaptic herpes simplex virus (HSV) into the left ventricular wall of mice to identify the whole-brain regions associated with the input to and output from the heart. We successfully detected PRV and HSV expression in at least 170 brain subregions in both male and female mice. Sex differences were discovered mainly in the hypothalamus and medulla, with male mice exhibiting greater correlation and hierarchical clustering than female mice, indicating reduced similarity and increased modularity of virus expression patterns in male mice. Further graph theory and multiple linear regression analysis of different injection timelines revealed that hub regions of PRV had highly similar clusters, with different brain levels, suggesting a top-down, hierarchically transmitted neural control pattern of the heart. Hub regions of HSV had scattered clusters, with brain regions gathered in the cortex and brainstem, suggesting a bottom-up, leapfrog, multipoint neural sensing pattern of the heart. Both patterns contain many hub brain regions that have been previously overlooked in brain‒heart axis studies. These results provide brain targets for future research and will lead to deeper insight into the brain mechanisms involved in specific heart conditions.
Animals ; Male ; Female ; Heart/physiology* ; Mice ; Herpesvirus 1, Suid ; Brain/physiology* ; Mice, Inbred C57BL ; Brain Mapping ; Efferent Pathways/physiology* ; Afferent Pathways/physiology* ; Simplexvirus ; Sex Characteristics

Objective To establish the method of fingerprint and content determination of multi-component for Xiangsha Yangwei pill by gas chromatography(GC).Methods The GC fingerprint of Xiangsha Yangwei pill was found,and the peak attribution was carried out.The contents of limonene,eucalyptol,camphor,borneol,bornyl acetate,patchouli alcohol,pogostone,and α-cyperone were determined.Results The fingerprint similarity of 56 batches of Xiangsha Yangwei pill were 0.33-0.99,28 common peaks were confirmed,and 14 known components were identified.Limonene,eucalyptol,camphor,borneol,bornyl acetate,patchouli alcohol,pogostone and α-cyperone showed good linearity within the determined ranges(14.30-286.08,24.52-490.44,16.14-322.88,9.40-187.95,15.39-307.83,25.78-515.60,19.95-398.90,and 24.87-497.30 μg·mL-1).The average recoveries were 101.20％,97.90％,93.97％,94.23％,102.94％,100.54％,99.16％,and 98.31％;with the RSDs were 2.41％,1.48％,1.65％,2.00％,1.93％,2.30％,2.07％,and 2.38％,respectively.The concentrations of eight components were 0.2-959.1,0.3-420.4,1.0-542.6,0.0-64.5,0.0-364.2,0.0-339.6,0.0-130.7,0.0-82.0 μg·g-1,respectively.Conclusion The fingerprint and multi-component determination method can be used for the quality control and evaluation of Xiangsha Yangwei pill.

‍Due to significant innovations in the diagnosis and treatment of hepatitis D virus （HDV）， the European Society of Hepatology （EASL） published its first international clinical practice guidelines on the management of individuals with HDV infection in July 2023. The guidelines mainly focus on the six aspects of HDV screening， diagnosis， clinical features and influencing factors， patient monitoring and selection for treatment， therapeutic methods and treatment endpoints. The guidelines give recommendations by answering and elaborating on 13 questions covering these six aspects. In addition， the guidelines also provide the prospect of the future treatment of HDV. The author’s team makes an excerpt of the guidelines and systematically introduces various evaluation points in recommendations and clinical management suggestions， in order to promote the development of clinical management and decision-making for individuals with HDV infection in China.

Excessive levels of cadmium (Cd) in soil exert serious negative impacts on soil ecosystems. Microorganisms are a common component of soil and show great potential for mitigating soil Cd. This review summarizes the application and remediation mechanisms of microorganisms, microbial-plants, and microbial-biochar in Cd-contaminated soil. Microorganisms such as Bacillus, Acinetobacter, Pseudomonas, and arbuscular mycorrhizal fungi (AMF) can change the biological validity of Cd through adsorption, mineralization, precipitation and dissolution. Different factors such as pH, temperature, biomass, concentration, and duration have significant effects on Cd bioavailability by microorganisms. Pseudomonas, Burkholderia, and Flavobacterium can promote the uptake of Cd²⁺ by hyperaccumulator through promotion and activation. Biochar, a soil amendment, possesses unique physicochemical properties and could act as a shelter for microorganisms in agriculture. The use of combined microbial-biochar can further stabilize Cd compared to using biochar alone.
Cadmium ; Ecosystem ; Soil Pollutants ; Charcoal/chemistry* ; Soil/chemistry*

Hepatitis D (HD) is a serious disease. Traditionally, it is believed that the infection with hepatitis D virus (HDV) is closely related to hepatitis B virus (HBV). Recently, scholars have found the evidence that transmission of HDV does not rely on HBV, and have opened up δ virus a new chapter in virus research. This article reviews the origin of HDV, life cycle of HDV, HDV related to HBV infection, HDV unrelated to HBV infection, HDV-like virus, and the problems and prospect.

Teaching practice is an important link in the process of postgraduate training. This paper analyzes the current situation and existing problems of postgraduate teaching practice, and discusses the influence of new teaching practice mode on postgraduate training. Aiming at the problems existing in the teaching practice of postgraduate students, this paper carries out the reform from five aspects: subject course learning, teaching preparation, theoretical teaching, experimental teaching participation and teaching management participation, and evaluates the implementation effect of the reform. Through the reform of postgraduate teaching practice, the teaching ability and social competitiveness of postgraduate students have been effectively improved. The new teaching practice mode provides new ideas and methods for the cultivation of postgraduate students' teaching ability.

Objective:To analyze the sensitivity and specificity of SARS-CoV-2 nucleic acid testing in 20 348 close contacts of COVID-19 cases in different prevention and control stages in Guangzhou and to provide scientific evidence for optimizing epidemic response strategies.Methods:A total of 20 348 close contacts of COVID-19 cases in Guangzhou were traced between February 21 and September 22,2020. All the close contacts were tested for the nucleic acid of SARS-CoV-2. The sensitivity and specificity of nucleic acid testing and diagnosis in the different prevention and control stages were compared.Results:In 20 348 close contacts, 12 462 were males (61.24%), the median ( P 25, P 75) of age of them was 31.0 years (23.0,43.0), the median number ( P 25, P 75) of nucleic acid testing for them was 2.0 (1.0,3.0), and the median ( P 25, P 75) of their quarantine days was 12.0 (8.0,13.0) days, respectively. A total of 256 COVID-19 cases were confirmed in the close contacts after seven nucleic acid tests. In the 1 st, 2 nd, 3 rd and 7 th nucleic acid testing, the sensitivity and specificity were 69.14% and 99.99% (177 cases confirmed), 89.84% and 99.99% (230 cases confirmed), 97.27% and 99.99% (249 cases confirmed), and 100.00% and 99.98%, respectively. In the three stages of COVID-19 prevention and control in China: domestic case stage, imported case stage, and imported case associated local epidemic stage, the sensitivity of the 1 st nucleic acid testing was 70.68%, 68.00% and 67.35%, and the specificity was 99.98%, 100.00% and 100.00%, respectively. Conclusions:The sensitivity of nucleic acid testing in the close contacts at the different stages were consistent with slight decrease, which might be related to the increased proportion of asymptomatic infections in the late stage of epidemic prevention and control with COVID-19 in Guangzhou. It is suggested to give three nucleic acid tests to improve the sensitivity and reduce false negative risk.

Objective: To improve the clinical outcomes and critical care quality for pediatric extracorporeal membrane oxygenation (ECMO), the multidisciplinary team including doctors, nurses and respiratory therapist designed a daily checklist for patients with ECMO and evaluated the effect of the checklist. Methods: A daily checklist for ECMO patients was designed based on the expert consensus and multi-centers relevant researches. ECMO patients from January 2015 and May 2017 in the pre-application group, while the other patients from June 2017 to December 2018 in the post-application group were compared in the clinical outcomes. Results: All 78 pediatric patients used the venoarterial extracorporeal membrane oxygenation (VA-ECMO) including 27 patients in the pre-application group and the other 51 patients in the post-application group. The mortality rate was 49.02%(25/51) in the post-application group and 81.48%(22/27) in the pre-application group, the differences were significant (χ²=7.768, P=0.005). The rates of central line-associated bloodstream infection, pressure injury and the body weight change was 2/5, 4/5, -2.70(-3.50--2.05) in the pre-application group and 3.85%(1/26), 26.92%(7/26), -0.09(-1.00-0.00) in the post-application group,the differences were significant (χ²=4.505, 5.161, Z=3.252, P<0.05 or 0.01). Conclusions It is helpful for clinical staff to follow up the progress of the multiple organs when using the daily checklist, to facilitate team communication for, and to improve nursing management through setting the daily targets for individual VA-ECMO patients.

Purpose To investigate the value of quantitative evaluation of upper urinary tract pump function after unilateral lower urinary tract obstruction using 640-slice dynamic volumetric CT. Materials and Methods Twenty-six healthy subjects (control group), thirty cases of acute upper urinary tract obstruction caused by unilateral ureteral calculi and thirty cases of chronic upper urinary tract obstruction were selected, all receiving dynamic volume scan of 640-slice dynamic volumetric CT during renal excretion. The value of contrast agent volume, volumetric difference, time difference correspondent to the difference, volumetric change rate, and flow rate in ureteropelvic and partial upper ureter were calculated and analyzed. Results Volumetric change rate of obstruction side of upper urinary tract in acute obstruction group was higher than that of contralateral upper urinary tract. Volumetric average value, volumetric difference and flow rate were increased with time difference value decreased, the difference of which were all statistically significant (P<0.001). Volumetric change rate, volumetric difference and flow rate of obstruction side of upper urinary tract in acute obstruction group was lower compared with those of contralateral upper urinary tract, while volumetric average value and time difference raised, the difference was statistically significant (P<0.001). The difference of five pump function values among acute obstruction group, obstruction side of chronic obstruction group and control group were statistically significant (P<0.001). Conclusion 640-slice dynamic volumetric CT can be used to quantitatively evaluate changes of urinary tract pump function in physiological and obstructive status.

Objective To investigate job satisfaction of clinical nurses in Shanghai, and explore the influencing factors so as to provide evidence for improving nursing quality and nursing science development. Methods A total of 1 149 nurses had been selected to take part in the nurse′s satisfaction measurement in the level two or beyond hospital, and we explored the impacted factors in order to provide evidence for the improvement of nursing quality by stratified sampling method in 2013 in 71 level two and beyond hospitals Shanghai. Results The total score of nurse′s satisfaction was over 4, and nurses were satisfied the colleague cooperation highest but the career development was lowest. The top three dimension scores of satisfaction were colleague cooperation (4. 94 ± 0. 24), supervisor support (4. 93 ± 0. 26), and leader communication (4. 92 ± 1. 75). The reward satisfaction of nursing job and satisfaction of nursing management had positive correlation with satisfaction of nurse experience (r=0. 85, 0. 82;P<0. 05). Conclusions Multiple influencing factors impacts on satisfaction of nurses, but how adjust rigid system, arrange human resources well and achieve the value. The recognition of nursing job are a significant topic and are worthy to study further for the improvement of nursing quality.