Objective To evaluate the role of dynamic contrast-enhanced magnetic resonance imaging(DCE-MRI)in the diagnosis of axillary lymph node metastasis(ALNM)in breast cancer patients with low HER-2 expression.Methods A total of 297 breast cancer patients with low HER-2 expression treated at the Affiliated Hospital of Xuzhou Medical University were enrolled and divided into ALNM group(n=71)and non-ALNM group(n=226)according to whether there was ALNM.All patients underwent DCE-MRI,and DCE-MRI derived parameters were collected and analyzed.Logistic regression analysis was used to identify the risk factors for ALNM,and the efficacy of DCE-MRI in diagnosing ALNM was assessed using receiver operating characteristic curve.Results Significant differences were observed between two groups in lesion distribution,TNM staging,vascular invasion,and most DCE-MRI derived parameters including short-to-long axis ratio,Ve,Ktrans,Kep,ADC and SER(all P<0.05).Multivariate regression analysis revealed that the short-to-long axis ratio,Ve,Ktrans,Kep,ADC and SER were significant risk factors for ALNM in breast cancer patients.Comparative analysis demonstrated that the combination of DCE-MRI derived parameters yielded a maximum area under the curve of 0.976,with a sensitivity of 91.5%and a specificity of 92.9%.Conclusion DCE-MRI is an effective tool for determining the presence of ALNM in breast cancer patients with low HER-2 expression,providing significant diagnostic evidence for clinical practice.

Objective To explore the effect of endoscopic retrograde appendicitis therapy on inflammatory reaction,oxidative stress and immune level in patients with acute appendicitis.Methods 82 patients with acute appendicitis who were treated from January 2020 to September 2023,and divided into control group(41 cases)and treatment group(41 cases).The grouping method was random number table method.The control group was given laparoscopic appendectomy,and the treatment group was given endoscopic retrograde appendicitis therapy.Both groups observed that the patients were discharged from hospital and were followed up for 1 week.The operation-related indexes,levels of inflammatory factors[serum procalcitonin(PCT),soluble intercellular adhesion molecule-1(sICAM-1),lipoxin A4(LXA4),soluble P-selectin(sP-s)and C-reactive protein(CRP)],oxidative stress[serum superoxide dismutase(SOD)and malondialdehyde(MDA)]and immune function[immunoglobulin M(IgM)and immunoglobulin G(IgG)]before and 24 h after operation,score of pain before operation,12 h and 24 h after operation and complications(during the study period)were compared between the two groups.Results Compared with the control group,the amount of bleeding in the treatment group was relatively less,and the time of lying on bed,hospitalization,anal exhaust and body temperature returning to normal after operation were relatively shorter,the differences were statistically significant(P＜0.05).Compared with pre-operation,the levels of serum sICAM-1,LXA4 and sP-s in both groups decreased at 24 h after operation,while the level of serum PCT and CRP increased,the treatment group was significantly lower than the control group(P＜0.05).Compared with pre-operation,the levels of serum SOD,IgM and IgG in the two groups decreased at 24 h after operation,but the levels in the treatment group were relatively higher,while the levels of serum MDA all increased,which was lower in the treatment group(P＜0.05).Compared before operation,the scores of pain in the two groups showed a downward trend from 12 and 24 h after operation,and compared with the control group,the scores of pain in the treatment group were relatively lower(P＜0.05).During the study period,compared with 26.83%in the control group,the total incidence of complications in the treatment group was 7.32%,which was relatively lower(P＜0.05).Conclusion Endoscopic retrograde appendicitis therapy for acute appendicitis can effectively reduce patients'oxidative stress and inflammatory reaction,protect their immune function,shorten patients'postoperative recovery time,relieve their pain and reduce the incidence of postoperative complications.

Objective To explore the effect of endoscopic retrograde appendicitis therapy on inflammatory reaction,oxidative stress and immune level in patients with acute appendicitis.Methods 82 patients with acute appendicitis who were treated from January 2020 to September 2023,and divided into control group(41 cases)and treatment group(41 cases).The grouping method was random number table method.The control group was given laparoscopic appendectomy,and the treatment group was given endoscopic retrograde appendicitis therapy.Both groups observed that the patients were discharged from hospital and were followed up for 1 week.The operation-related indexes,levels of inflammatory factors[serum procalcitonin(PCT),soluble intercellular adhesion molecule-1(sICAM-1),lipoxin A4(LXA4),soluble P-selectin(sP-s)and C-reactive protein(CRP)],oxidative stress[serum superoxide dismutase(SOD)and malondialdehyde(MDA)]and immune function[immunoglobulin M(IgM)and immunoglobulin G(IgG)]before and 24 h after operation,score of pain before operation,12 h and 24 h after operation and complications(during the study period)were compared between the two groups.Results Compared with the control group,the amount of bleeding in the treatment group was relatively less,and the time of lying on bed,hospitalization,anal exhaust and body temperature returning to normal after operation were relatively shorter,the differences were statistically significant(P＜0.05).Compared with pre-operation,the levels of serum sICAM-1,LXA4 and sP-s in both groups decreased at 24 h after operation,while the level of serum PCT and CRP increased,the treatment group was significantly lower than the control group(P＜0.05).Compared with pre-operation,the levels of serum SOD,IgM and IgG in the two groups decreased at 24 h after operation,but the levels in the treatment group were relatively higher,while the levels of serum MDA all increased,which was lower in the treatment group(P＜0.05).Compared before operation,the scores of pain in the two groups showed a downward trend from 12 and 24 h after operation,and compared with the control group,the scores of pain in the treatment group were relatively lower(P＜0.05).During the study period,compared with 26.83%in the control group,the total incidence of complications in the treatment group was 7.32%,which was relatively lower(P＜0.05).Conclusion Endoscopic retrograde appendicitis therapy for acute appendicitis can effectively reduce patients'oxidative stress and inflammatory reaction,protect their immune function,shorten patients'postoperative recovery time,relieve their pain and reduce the incidence of postoperative complications.

Objective To evaluate the role of dynamic contrast-enhanced magnetic resonance imaging(DCE-MRI)in the diagnosis of axillary lymph node metastasis(ALNM)in breast cancer patients with low HER-2 expression.Methods A total of 297 breast cancer patients with low HER-2 expression treated at the Affiliated Hospital of Xuzhou Medical University were enrolled and divided into ALNM group(n=71)and non-ALNM group(n=226)according to whether there was ALNM.All patients underwent DCE-MRI,and DCE-MRI derived parameters were collected and analyzed.Logistic regression analysis was used to identify the risk factors for ALNM,and the efficacy of DCE-MRI in diagnosing ALNM was assessed using receiver operating characteristic curve.Results Significant differences were observed between two groups in lesion distribution,TNM staging,vascular invasion,and most DCE-MRI derived parameters including short-to-long axis ratio,Ve,Ktrans,Kep,ADC and SER(all P<0.05).Multivariate regression analysis revealed that the short-to-long axis ratio,Ve,Ktrans,Kep,ADC and SER were significant risk factors for ALNM in breast cancer patients.Comparative analysis demonstrated that the combination of DCE-MRI derived parameters yielded a maximum area under the curve of 0.976,with a sensitivity of 91.5%and a specificity of 92.9%.Conclusion DCE-MRI is an effective tool for determining the presence of ALNM in breast cancer patients with low HER-2 expression,providing significant diagnostic evidence for clinical practice.

Cannabinoid type 1 receptor(CB1R)is one of the most widely studied endocannabinoid receptors in recent years,which is expressed in both central and peripheral nerve systems.CBIR is located in the presynaptic membrane,and regulates the release of neurotransmitters through retrograde inhibitory synaptic transmission,which is an effective target for the treatment of pain.Activation of CB1R has analgesic effect on injurious,pathological,and inflammatory pain,and antagonism of CB1R can cause pain sensitization.This article describes CB1R from the aspects of structure and function,signal transduction,and analgesic mechanism,so as to provide reference for further understanding the pathophysiology of pain and exploring better pain treatment methods.

Objective:To investigate the prevalence of cataracts, the surgical coverage, and postoperative visual acuity of adults in Ningxia.Methods:A cross-sectional study using multistage cluster random sampling was conducted.Ten survey sites in Ningxia were selected and the population aged 18 years and over was surveyed with questionnaire, height and weight measurements, visual acuity, intraocular pressure, fundus photography and slit-lamp examinations.Cataract prevalence and its influencing factors were analyzed.Cataract prevalence, surgical coverage and presenting visual acuity (PVA) and best corrected visual acuity (BCVA) after surgery were investigated in different age groups of the examined population.The study adhered to the Declaration of Helsinki and was approved by the Ethics Committee of the People's Hospital of Ningxia Hui Autonomous Region (No.[2023]-LL-010).Participants signed informed consent prior to the examination.Results:A total of 6 145 people should be examined, and 5 721 people were actually examined, with an examination rate of 93.10%.The study population consisted of 2 558 males, accounting for 44.71%, and 3 163 females, accounting for 55.28%, with ages ranging from 18 to 93 years old and an average age of (64.27±13.48) years.Among them, 1 180 patients diagnosed with cataract, with a cataract prevalence of 20.62%.The prevalence of cataract increased with age and decreased with education level, showing statistically significant differences ( χ2=1 091.32, 581.92; both at P<0.01).The prevalence of cataract was significantly higher among people with hypertension, diabetes mellitus, hyperlipidemia, and coronary heart disease than those without these diseases ( χ2=274.65, 118.15, 78.05, 182.71; all at P<0.01).Cataract surgery was performed in 245 cases in the cataract patient population, with a surgical coverage rate of 20.76%.Of the 245 cases, 229 cases were implanted with IOLs, with an implantation rate of 93.40%.The social burden rate of cataract blindness was 2.29%, and increased with age.Of the 339 eyes that underwent cataract surgery, 241 had a PVA≥0.3, accounting for 71.09%, and 272 had a BCVA≥0.3, accounting for 80.24%. Conclusions:In Ningxia, cataracts are still the main cause of vision impairment and blindness in the elderly, and the social burden rate of cataract blindness is high.Moreover, the coverage rate of cataract surgery is low, so both the coverage and quality of surgery need improvement.

Objective To comprehensively analyze the effectiveness of exercise training-based respiratory rehabilitation therapy on patients with occupational pneumoconiosis (hereinafter referred to as "pneumoconiosis"). MethodsLiterature on randomized controlled trials of exercise training-based respiratory rehabilitation therapy for pneumoconiosis patients published from the establishment of the database to July 2023 was retrieved from academic systems such as the China National Knowledge Infrastructure, Wanfang Data Knowledge Service Platform, VIP Database, and China Biology Medicine using bibliometrics method. The RevMan 5.4 software was used for meta-analysis of the selected literatures. Subgroup analysis was conducted to explore the source of study heterogeneity. The funnel plot method was used to test publication bias. Results A total of 55 articles were included, involving 2 436 pneumoconiosis patients in the experimental group and 2 405 pneumoconiosis patients in the control group. The result of random or fixed effect model showed that the six minutes walking distance, the total score of Short from Health Survey-36, forced vital capacity (FVC), forced expiratory volume in one second (FEV₁), FEV₁/FVC, arterial partial pressure of oxygen of pneumoconiosis patients increased after respiratory rehabilitation therapy (all P<0.05), while the total score of the St. George's Respiratory Questionnaire and arterial partial pressure of carbon dioxide decreased compared with the conventional treatment (all P<0.05). The result of subgroup analysis showed that the total score of the St. George's Respiratory Questionnaire, FEV₁, and the index of arterial partial pressure of oxygen of pneumoconiosis patients was better in the rehabilitation treatment for ≥six months compared with those

Objective:To conduct a phased summary and analysis of the operation and quality control (QC) of the first human milk bank (HMB) in East China over a ten-year period.Methods:Data on the operation of the HMB at Women's Hospital of Nanjing Medical University, characteristics of donors and recipients, clinical application of donated milk, and operational costs from August 1, 2013, to July 31, 2023, were collected, organized, analyzed, and described. Quality and safety management of the HMB began in 2016, with QC measures implemented. Chi-square tests were used to compare data related to the operation of the HMB, donors, and recipient infants before QC (2013-2015) and after QC (2016-2023). Results:Over the ten-year period since its establishment, the HMB received donor human milk (DHM) from 1 974 donors, totaling 9 390.41 liters. The qualification rate of donors was 86.47% (1 707/1 974), with a qualification rate of DHM of 98.01% (9 203.21/9 390.41) and 21 757 donation instances, with the highest individual donation count reaching 195 times. In the past 10 years, due to the epidemic of the new coronavirus in 2020, the number of milk donors, the amount of DHM and the total number of milk donations decreased significantly, but the amount of DHM per capita and the number of milk donations per capita showed a continuous upward trend. Compared to the period before QC, the qualification rate of donors [96.75% (1 253/1 295) vs. 66.86% (454/679), χ 2=340.33, P<0.001] and the qualification rate of DHM [98.19% (8 366.76/8 521.08) vs. 96.22% (836.45/869.33), χ 2=16.33, P<0.001] both improved after QC. A total of 11 197 recipients received 6 615.38 liters of DHM, with a utilization rate of 71.88% (6 615.38/9 203.21). The current operation mode of the HMB is "voluntary donation, free use". Over ten years, the costs for consumables, testing, labor, energy, and fixed assets amounted to 9.36 million CNY, with an operational cost of 996.32 CNY per liter (9.36 million/9 390.41 L) and approximately 1.00 CNY per milliliter of DHM. Conclusions:The hospital's HMB has been operating stably for ten years, and abundant DHM benefits many newborns. QC measures have effectively increased the qualification rates of both donors and DHM, providing better nutritional support for the treatment of critically ill infants. However, the operational costs of the HMB are relatively high, necessitating the exploration of an operational model suitable for China's national conditions.