ObjectiveTo investigate the effect and mechanism of polysaccharide in water extract of Cyclocarya paliurus （CPWP） in inhibiting benign prostatic hyperplasia （BPH）. MethodsCPWP was obtained by heating reflux， aqueous extraction， alcohol precipitation， and freeze drying. The chemical composition and structural properties of CPWP were analyzed by high performance liquid chromatography with 1-pheny-3-methyl-5-pyrazolone pre-column derivatization and infrared spectroscopy. Male SD rats were randomly assigned into control， model， finasteride （ig 5 mg·kg^-1）， and low-， medium-， and high-dose （ig 50， 75， 100 mg·kg^-1） CPWP groups， with 8 rats in each group. The BPH model was established by subcutaneously injecting propionate testosterone in castrated rats. The rats in the drug intervention groups were administrated with corresponding drugs， and those in the control group were administrated with an equal volume of normal saline each day. After 30 consecutive days， the rats were sacrificed， and the prostate tissue was separated and weighed. The effects of drug interventions on the body weight， prostate wet weight， and prostate index of rats were examined. The prostate tissue was stained with hematoxylin-eosin （HE） for observation of pathological changes. Enzyme-linked immunosorbent assay was employed to measure the level of dihydrotestosterone （DHT）， and immunohistochemical staining was used to detect the expression of steroid 5 alpha-reductase 2 （SRD5A2） and Ki67 in the prostate tissue. ResultsCPWP was identified as a saccharide， with characteristic absorption peaks of saccharides. CPWP showed the total sugar content of 44.15% and molecular weight within the range of 5.5-78.8 kDa， being composed of mannose， rhamnose， galacturonic acid， glucose， galactose， xylose， and arabinose. Compared with the control group， the model group had significantly increased prostate wet weight and prostate index （P<0.01）， thick and tall prostate epithelial cells， increased internal wrinkles， papillary expansion into the cavity， an elevation in DHT level in the serum， and up-regulated expression of SRD5A2 and Ki67 in the prostate tissue （P<0.05， P<0.01）. Compared with the model group， both the finasteride and CPWP groups showed decreases in prostate wet weight and prostate index （P<0.05， P<0.01）， thinned prostate epithelial cells， with only a small portion of internal wrinkles and papillary expansion into the cavity， shortened papillary protrusions， lowered DHT level in the serum， and down-regulated expression of SRD5A2 and Ki67 in the prostate tissue （P<0.01）. Moreover， CPWP exerted effects in a dose-dependent manner. ConclusionCPWP inhibits BPH by regulating the expression of SRD5A2.

Objective To investigate the relationship between tooth loss and the occurrence of esophageal cancer in a natural village in Wenfeng District, Anyang City, Henan Province. Methods A prospective cohort study was conducted to observe the occurrence of tooth loss and esophageal cancer among the asymptomatic residents of the natural village for 16 years from January 2008 to July 2024. Data were analyzed by chi-square test, binary logistic regression, and restricted cubic spline. Results Among the total population of 711 cases, 136 cases were lost to follow-up and 575 cases were included in the final statistics, including 45 cases with esophageal cancer. Significant statistical difference was found between esophageal cancer patients with and without tooth loss (P<0.05). Logistic regression analysis showed that tooth loss was associated with the occurrence of esophageal cancer (OR=3.977, 95%CI: 1.543-10.255). After the adjustment for confounders, tooth loss remained significantly associated with the occurrence of esophageal cancer (OR=3.038, 95%CI: 1.035-8.914). A nonlinear dose-response relationship was observed between the number of teeth lost and the incidence of esophageal cancer. When the number of teeth lost was less than 12, the risk of esophageal cancer increased with the number of teeth lost. When more than 12 teeth were lost, the risk of esophageal cancer decreased as the number of teeth lost increased. Conclusion Tooth loss is a risk factor for the occurrence of esophageal cancer in this natural village. When the number of teeth lost is less than 12, the risk of esophageal cancer increases with the number of teeth lost.

Objective To investigatethe relationship between gastroesophageal reflux disease (GERD) symptoms and clinicopathological characteristics, p53 expression, and survival of Chinese patients with esophageal adenocarcinoma. Methods A total of 3882 patients with esophageal adenocarcinoma, 970 matched patients with esophageal squamous cell carcinoma, and 970 matched patients with gastric cardia adenocarcinoma were included to compare the incidence of GERD symptoms. Patients with esophageal adenocarcinoma were divided into two groups according to the presence and absence of GERD symptoms. The differences in clinicopathological characteristics and p53 expression between the two groups were compared by chi-square test, and the differences in survival between the two groups were compared by landmark analysis. Results The incidence of GERD symptoms increased successively in esophageal squamous cell carcinoma, esophageal adenocarcinoma, and gastric cardia adenocarcinoma. In patients with esophageal adenocarcinoma, the proportions of male, less than 65 years old, lower thoracic tumors, tumors without squamous cell carcinoma, poorly differentiation, early tumors (stage 0-I), and p53-positive tumors in the group with GERD symptoms were higher than those in the group without GERD symptoms; moreover, the long-term survival (≥15 years) was better. Conclusion GERD symptom is an important clinical sign of esophageal adenocarcinoma. It is closely related to specific clinicopathological characteristics, p53 overexpression, and good long-term prognosis.

The current situation of tumor radiotherapy teaching is far behind the development of radiotherapy technologies. The construction of a teaching system based on an artificial intelligence-powered automatic target delineation system and a standardized cancer radiotherapy case library is operable and practical for realizing the standardization and homogenization of clinical target volume delineation teaching, improving students' precision and speed of target volume delineation, and promoting students' learning interest, initiative, and efficiency, which can bring new vitality to the development of radiotherapy education and is worthy of further exploration and promotion.

Objective:To explore the health behavior of middle-aged and young stroke patients and analyze its influencing factors.Methods:From April to July 2023, convenience sampling was used to select 172 middle-aged and young stroke patients admitted to the First Affiliated Hospital of Naval Medical University as the research subject. A survey was conducted using the General Information Questionnaire, Health Behavior Scale for Stroke Patients, Health Belief Scale, and Multidimensional Scale of Perceived Social Support. Spearman correlation was used to analyze the correlation between health behavior, social support, and health beliefs among middle-aged and young stroke patients. Multiple linear regression was used to analysis the influencing factors of health behavior among middle-aged and young stroke patients. A total of 172 questionnaires were distributed, and 8 questionnaires with missing items and short response times were excluded, and 164 valid questionnaires were collected, with a valid response rate of 95.34%.Results:Among 164 middle-aged and young stroke patients, the total score of the Health Behavior Scale for Stroke Patients was 64.50 (57.00, 80.75), and the average score of the items was 2.58 (2.28, 3.23). Multiple linear regression analysis showed that factors affecting the health behavior of middle-aged and young stroke patients were whether it was the first onset, the time required to reach nearby medical institution, health belief, and social support ( P<0.05) . Conclusions:The health behavior of middle-aged and young stroke patients is above the medium level. In the process of intervening in the health behavior of middle-aged and young stroke patients, medical and nursing staff should pay attention to patients with recurrent stroke and poor access to medical services, while also improving patients' health belief and social support to promote patients' health behavior and reduce stroke recurrence.

Objective:To explore the status quo and influencing factors of self-management behavior in high-risk stroke patients, so as to provide a basis for improving their self-management behavior.Methods:From March to June 2023, convenience sampling was used to select 395 high-risk stroke patients admitted to the First Affiliated Hospital of Naval Medical University as the study subject. A survey was conducted on patients using the General Information Questionnaire, Self-management Behavior Scale for High-risk Stroke Patients, and Cerebral Apoplexy Knowledge Questionnaire. Pearson correlation was used to analyze the correlation between self-management behavior and stroke knowledge. A total of 395 questionnaires were distributed, and unqualified questionnaires (such as regular or repetitive responses, conflicting options before and after) were excluded. Finally, 387 valid questionnaires were collected, with an effective response rate of 97.97%.Results:The score of the Self-management Behavior Scale for High-risk Stroke Patients for 387 high-risk stroke patients was (137.60±25.47), with a score indicator of 62.53%, which was at a moderate level. The score of the Cerebral Apoplexy Knowledge Questionnaire was (19.26±10.19), which was at a low level. The random forest algorithm showed that the importance order of influencing factors was stroke knowledge, number of ways to obtain health information, educational level, number of risk factors, frequency of physical examinations, medical insurance, age, work situation, and gender. The Lasso regression indicated that there were four influencing factors corresponding to the minimum error. The top four factors in importance were included in multiple linear regression, and the results showed that educational level, number of risk factors, number of ways to obtain health information, and stroke knowledge were the influencing factors of self-management behavior in high-risk stroke patients ( P<0.05) . Conclusions:The self-management behavior of high-risk stroke patients was at a moderate level. Medical and nursing staff should strengthen stroke knowledge education, provide personalized education for different risk factors, and improve the self-management of the target population to reduce the incidence of stroke.

Objective:To explore the mediating effect of coping style on disease perception and pre-hospital delayed behavioral intention in patients with acute ischemic stroke.Methods:This study was a cross-sectional study. From February to July 2023, convenience sampling was used to select 205 patients with acute ischemic stroke admitted to the First Affiliated Hospital of Naval Medical University as the study subject. The survey was conducted using the General Information Questionnaire, Stroke Pre-Hospital Delay Behavior Intention, Brief Illness Perception Questionnaire, and Simplified Coping Style Questionnaire.Results:205 questionnaires were filled out, 195 valid questionnaires, and the validity rate of the questionnaire was 95.1%. The Stroke Pre-Hospital Delay Behavior Intention score of patients with acute ischemic stroke was (63.61±16.12). Pre-hospital delayed behavioral intention in patients with acute ischemic stroke was positively correlated with disease perception and negative coping ( r=0.360, 0.266; P<0.01), and negatively correlated with positive coping ( r=-0.279, P<0.01). The mediating effects of positive and negative coping on disease perception and pre-hospital delayed behavioral intention in ischemic stroke patients were 0.111 and 0.097, respectively, accounting for 26.89% and 23.49% of the total effect. Conclusions:There is a partial mediating effect of coping strategies between disease perception and pre-hospital delayed behavioral intention in ischemic stroke patients. In the process of stroke management, medical and nursing staff can reduce pre-hospital delayed behavioral intentions by improving disease cognition and coping style.

Objective:To assess respondents' understanding of the Physical Activity Questionnaire for Chronic Kidney Disease (CKD-PAQ) in Chinese and revise the items.Methods:The CKD-PAQ was sinicized according to the FACIT translation model to form a preliminary version. Using the purposive sampling method, 40 patients with chronic kidney disease from Shenzhen Traditional Chinese Medicine Hospital were selected as respondents for three rounds of cognitive interviews from July to August 2023. Targeted content analysis was used to understand the level of understanding of the initial version of the questionnaire. Based on the respondents' suggestions, the questionnaire's final version was obtained after discussing and negotiating the questionable items.Results:The CKD-PAQ contained four dimensions and 31 items. A total of 22 questions were identified in three rounds of interviews. The results of the first round of interviews show that 13 questions need to be revised in terms of understanding and expression, the results of the second round of interviews show that eight questions need to be revised in terms of understanding and expression, the results of the third round of interviews showed that the language understanding of the revised Chinese version was consistent with the original questionnaire.Conclusions:Cognitive interviews can improve respondents' understanding of the questionnaire and identify issues that are difficult to identify during the localization process, thus improving the accuracy of the questionnaire.

By referring to the relevant literature on the application of positive psychology in patients with cognitive impairment at home and abroad, this paper reviews the measurement tools, interrelationships and intervention status of positive psychology in patients with cognitive impairment, and explores the prospects of its application in this population. The aim is to provide a basis for nursing decision-making in patients with cognitive impairments.

Objective:To evaluate the role of Kv7.2 in the dorsal root ganglion (DRG) in reduction of paclitaxel-induced neuropathic pain (NPP) by morphine in rats.Methods:SPF healthy male Sprague-Dawley rats, aged 5 weeks, weighing 140-160 g, were randomly selected. This experiment was performed in two parts. Experiment Ⅰ Seventy-two rats were divided into control group (group C), control + morphine group (group C+ M), NPP-1 group (group NPP1) and NPP-1 + morphine group (group NPP1+ M), with 18 animals in each group. Experiment Ⅱ Twenty-four rats were divided into NPP2 group, NPP2+ ML252 group, NPP2+ morphine group (NPP2+ M group), and NPP2 + morphine + ML252 group (NPP2+ M+ ML252 group), with 6 animals in each group. The model of NPP was developed by intraperitoneal injection of paclitaxel 2 mg/kg, once every 2 days for 4 times. After preparation of the model, morphine 5 mg/kg was subcutaneously injected in C+ M group, NPP1+ M group, NPP2+ M group and NPP2+ M+ ML252 group, and potassium channel inhibitor ML252 10 mg/kg was intraperitoneally injected for 7 consecutive days in NPP2+ ML252 group and NPP2+ M+ ML252 group. Six rats were randomly selected from each group on the 1st, 3rd and 7th days after the end of continuous administration in experiment Ⅰ and from each group on the 7th day after the end of continuous administration in experiment Ⅱ for measurement of the mechanical paw withdrawal threshold (MWT) and cold paw withdrawal latency (CWL). At the end of the behavioral assessment, the rats were sacrificed and the DRG was removed for determination of Kv7.2 expression by Western blot. On the 1st day after the end of continuous administration in experiment Ⅰ, the expression of Kv7.2 mRNA in DRG was detected using quantitative real-time polymerase chain reaction, and immunofluorescence was used to detect the co-expression of Kv7.2 with neurons and glial cells in group C.Results:Experiment Ⅰ Compared with C group, the MWT was significantly increased, the expression of Kv7.2 protein and mRNA was up-regulated at each time point ( P<0.05), and no significant change was found in the CWL in C+ M group ( P>0.05), and the MWT was significantly decreased, the CWL was shortened, and the expression of Kv7.2 protein and mRNA was down-regulated at each time point in NPP1 group ( P<0.05). Compared with NPP1 group, the MWT was significantly increased, the CWL was prolonged, and the expression of Kv7.2 protein and mRNA was up-regulated at each time point in NPP1+ M group ( P<0.05). Kv7.2 in DRG was expressed in peptideergic small and medium diameter neurons, non-peptideergic small and medium diameter neurons and large diameter neurons, but not in glial cells. Experiment Ⅱ Compared with NPP2 group, no significant change was found in the expression of MWT, CWL and Kv7.2 in NPP2+ ML252 group ( P>0.05), and the MWT was significantly increased, CWL was prolonged, and the expression of Kv7.2 in DRG was up-regulated in NPP2+ M group ( P<0.05). Compared with NPP2+ M group, the MWT was significantly decreased, CWL was shortened, and the expression of Kv7.2 in DRG was down-regulated in NPP2+ M+ ML252 group ( P<0.05). Conclusions:Down-regulation of Kv7.2 expression in DRG is involved in the reduction of paclitaxel-induced NPP by morphine in rats.