目的 对比羟氯喹联合半量激素与足量糖皮质激素（激素）治疗IgA肾病在减少尿蛋白、保护肾功能方面的效果以及不良反应的发生率。方法 筛选2020年6月—2022年1月我院收治基线尿蛋白排泄量>1 g/ d、基线估算肾小球滤过率>15 mL/min的IgA肾病患者为研究对象,随机分为羟氯喹+半量激素（Q+G）组及足量激素（G）组。Q+G组予羟氯喹及泼尼松0.5 mg/（kg·d）,G组予泼尼松 1 mg/（kg·d）,比较2组在治疗2、4、6个月后24 h尿蛋白定量的改变值;比较2组6个月内24 h尿蛋白较基线下降>30%的比例、24 h尿蛋白定量下降至1 g以下的比例、估算肾小球滤过率下降>30%的比例以及不良反应发生率。结果 纳入Q+G组49例,G组46例。2组在治疗2、4、6个月后的24 h尿蛋白定量改变值、6个月内24 h尿蛋白较基线下降>30%的比例、24 h尿蛋白定量下降至1 g以下的比例、6个月内估算肾小球滤过率下降>30%的比例比较差异均无统计学意义（均P>0.05）;Q+G组不良反应发生率低于G组（P<0.05）。结论 与足量激素治疗相比,羟氯喹联合半量激素治疗尿蛋白持续>1 g/d的IgA肾病患者在减少尿蛋白、保护肾功能中的效果相近,而不良反应的发生率较低。

Objective Compared with full-dose glucocorticoid,to evaluate the effect of hydroxychloroquine combined with half-dose glucocorticoid in the treatment of IgA nephropathy in reducing urinary protein and protecting renal function,as well as the incidence of adverse reactions. Methods From June 2020 to January 2022,patients with IgA nephropathy whose baseline urinary protein excretion>1 g/d and baseline estimate glomerular filtration rate>15 mL/min were enrolled and randomly divided into hydroxychloroquine combined with half-dose glucocorticoid(Q+G)group and full-dose glucocorticoid(G)group. Each patient in Q+G group was given oral hydroxychloroquine and oral prednisone at a dose of 0. 5 mg/(kg·d). Each patient in G group was given prednisone at a dose of 1 mg/(kg·d). The changes in 24-hour urine protein quantification between the two groups at 2,4 and 6 months of treatment were compared;the proportions of 24-hour urine protein decreased by more than 30%,24-hour urine protein decreased to less than 1 g,estimate glomerular filtration rate decreased >30% and adverse reactions within 6 months were compared between the two groups. Results Fourty-nine cases were enrolled in Q+G group and 46 cases in G group. There was no significant difference in the 24-hour urine protein changes between the two groups at 2,4 and 6 months of treatment. The proportion of 24-hour urine protein decreased by 30%,the proportion of the 24-hour urine protein decreased to below 1 g and the proportions of patients whose estimate glomerular filtration rate decreased by >30% within 6 months between the two groups were not significantly different. The proportion of adverse reactions in Q+G group was lower than that in G group. Conclusions Hydroxychloroquine combined with half-dose glucocorticoid has similar effects in reducing urinary protein and protecting renal function and lowering incidence of adverse reactions compared with full-dose glucocorticoid therapy in the treatment of patients with IgA nephropathy whose urinary protein excretion > 1 g/d.

目的 了解广州市某三甲综合医院2016—2022年住院病例的疾病分布特征,探究新型冠状病毒感染（新冠）疫情对疾病谱的影响,为医院合理配置医疗资源、提高医院医疗水平提供参考。方法 回顾性收集广州市某三甲综合医院2016—2022年间住院病例的病例数据,按照ICD-10国际统计分类标准进行分类,建立Joinpoint回归模型对不同类别疾病构成比的时间变化趋势进行分析。结果 2016—2022年间,前12顺位的疾病种类不变,构成比呈上升趋势的有4种,分别是循环系统疾病、肿瘤、消化系统疾病以及眼和附器疾病,构成比呈下降趋势的有3种,分别是呼吸系统疾病、肌肉骨骼系统和结缔组织疾病以及妊娠、分娩和产褥期。对这7类系统疾病进行不同性别、不同年龄段和不同居住地（广州市内/市外）的亚组分析,结果显示,除眼和附器疾病与妊娠、分娩和产褥期外,其余5种系统疾病在男性和女性中变化趋势比较差异无统计学意义（均P>0.05）。25岁以上人群循环系统疾病、肿瘤和消化系统疾病比例呈上升趋势。45岁以上人群眼和附器疾病的住院比例逐年上升。呼吸系统疾病的下降趋势集中出现在0~5岁和65岁以上人群,肌肉骨骼系统和结缔组织疾病的下降趋势可在45岁以上人群中被观测到,妊娠、分娩和产褥期的下降趋势则可在45岁以下人群中被观测到。总体和市内来源的住院病例的各系统疾病构成比变化趋势均未发现有2019年的连接拐点。但对于居住地在广州市外的病例,有6种系统疾病均存在一个2019年的连接拐点,与2016—2019年相比,2020—2022年增长趋势普遍减弱或者略有降低,但均无统计学意义,2022年市外来源住院病例的多种疾病占比低于2019年。≤24岁年龄组的病例因妊娠、分娩和产褥期住院的比例在2019年以后降低趋势加快,但也无统计学意义,2020—2022年≤24岁人群因妊娠、分娩和产褥期住院的比例低于2019年水平。结论 2016—2022年期间住院病例疾病谱有较大变化,这种变化趋势在不同性别、不同年龄段和居住地间效应存在差异。2020—2022年的新冠疫情流行主要降低了居住地在广州市外的住院病例多个系统疾病的比例以及24岁及以下患者因妊娠、分娩和产褥期住院的比例。

Objective To understand the disease distribution characteristics of inpatients in a 3-A-grade general hospital in Guangzhou from 2016 to 2022,to explore the impact of the COVID-19 on the disease spectrum,and to provide reference for hospitals to reasonably allocate medical resources and improve medical level. Methods Inpatient case data of a 3-A-grade general hospital from 2016 to 2022 were retrospectively collected and were classified according to the ICD-10 international statistical classification standard. A Joinpoint regression model was established to analyze the temporal trend of disease composition ratios in different categories. Results From 2016 to 2022,the type of top 12 diseases remained unchanged. There were 4 diseases showing an upward trend in composition,namely circulatory system diseases,tumors,digestive system diseases and eye and accessory organ diseases. There were 3 diseases showing a downward trend in composition,namely respiratory system diseases,musculoskeletal system and connective tissue diseases,as well as pregnancy,childbirth and postpartum period. A subgroup analysis was conducted on these 7 types of systemic diseases by gender,age group and place of residence(within/outside Guangzhou). The results showed that except for eye and accessory organ diseases and pregnancy,childbirth and postpartum period,there was no significant difference in the trend of changes in the other 5 systemic diseases between males and females(all P>0. 05). The upward trend of circulatory system diseases,tumors and digestive system diseases could be observed in people over the age of 25. The hospitalization rate of eye and accessory organ diseases among people over 45 years old was increasing year by year. The downward trend of respiratory diseases was concentrated in people aged 0~5 and over 65 years old,while the downward trend of musculoskeletal and connective tissue diseases could be observed in people aged 45 and above. The downward trend of pregnancy,childbirth and postpartum period could be observed in people under 45 years old. The trend of changes in the proportion of systemic diseases among inpatient cases from both overall and within Guangzhou had not been found to have a joinpoint in 2019. However,for cases residing outside of Guangzhou,there were six systemic diseases that all had a joinpoint in 2019. Compared with the growth trend from 2016 to 2019,the growth trend from 2020 to 2022 generally weakened or showed a slightly downward trend,but none of them were statistically significant. In 2022,the proportion of multiple diseases in hospitalized cases from outside Guangzhou was lower than that in 2019. The proportion of cases in the age group ≤24 years old who are hospitalized due to pregnancy,childbirth and postpartum period has been decreasing rapidly since 2019,but there was no statistical significance. The proportion of cases hospitalized due to pregnancy,childbirth and postpartum period in the population ≤24 years old from 2020 to 2022 was significantly lower than the level in 2019. Conclusions The disease spectrum of inpatients had undergone significant changes between 2016 and 2022,and these trends of changes were different among different genders,age groups and places of residence. The prevalence of the COVID-19 from 2020 to 2022 mainly reduced the proportion of inpatients with multiple systemic diseases living outside Guangzhou,and the proportion of inpatients aged 24 and under hospitalized for pregnancy,childbirth and puerperium.

目的 采用体外试验的方法,研究弱酸性培养对人正常食管内皮细胞（HEEC）活力的影响及潜在的调控机制。方法 细胞培养液的pH值分别设为（6.0~6.5）和（7.0~7.4）。以中性培养组为对照。利用CCK8实验,检测弱酸培养条件下,不同时间点食管内皮细胞活力的变化。采用蛋白免疫印迹法检测p38和磷酸化p38（p-p38）的表达。利用酶联免疫吸附剂测定法检测培养基上清液中IL-1β和IL-8的表达水平,并检测加入p38激酶活性抑制剂SBS 203580后两者浓度的变化。结果 弱酸环境下,细胞活力下降。培养1 h时,弱酸组细胞活力为（96.4±8.0）%,培养3 h和6 h时分别为（88.7±6.2）%和（87.7±7.4）%。细胞中p38的水平与培养基的pH值无关。弱酸培养可以促使细胞内p-p38的含量增加。基线时,弱酸组p-p38的灰度值比值为（0.37±0.02）,在培养2 h和6 h时分别为（0.64±0.09）、（0.84±0.11）,差异显著（P<0.01）。弱酸刺激诱导食管内皮细胞表达更多的IL-8和IL-1β。基线时弱酸组上清液中IL-8和IL-1β的浓度分别为（8.64±1.31）pg/mL,（3.35±0.49）pg/mL。培养6 h后,二者的浓度分别上升至（36.85±2.02）pg/mL和（19.19±1.60）pg/mL,差异显著（P<0.01）。加入SBS 203580后,IL-8和IL-1β的浓度明显下降（P<0.05）。结论 弱酸刺激可以降低食管内皮细胞的活力。p38 MAPK可能通过调控IL-8和IL-1β的表达参与该调节过程。

Objective To study the effect of weak acidic culture on the viability of normal human esophageal endothelial cells(HEEC)and the potential regulatory mechanisms. Methods The pH values of cell culture medium were set at(6. 0-6. 5)and(7. 0-7. 4),respectively. The group in neutral medium was set as control. CCK8 experiment was used to detect the change of cell viability at different time points. The expressions of p38 and phosphorylated p38(p-p38)were detected by Western Blot experiment. Enzyme linked immunosorbent assay was used to detect IL-1β and IL-8 concentration in the medium supernatant before and after adding p38 activity inhibitor(SBS 203580). Results HEEC viability was decreased under weak acidic conditions. After 1 hour of cultivation,the HEEC viability was(96. 4±8. 0)%,after 3 and 6 hours,it decreased to(88. 7±6. 2)% and(87. 7±7. 4)%,respectively. The level of p38 in cells was independent of culture medium pH values. Weak acidic stimulation could promote an increase of p-p38 in HEEC. At baseline,the gray value ratio of p-p38 in the weak acidic group was(0. 37±0. 02),and after 2 and 6 hours of culturing,it increased to(0. 64±0. 09)and(0. 84±0. 11),respectively,which differences were significant(P<0. 01). More IL-8 and IL-1β were expressed after weak acidic stimulation. At baseline,the concentrations of IL-8 and IL-1β in the medium supernatant of weak acidic group were(8. 64±1. 31)pg/mL and(3. 35±0. 49)pg/mL. After 6 hours of culturing,they increased significantly to(36. 85±2. 02)pg/mL and(19. 19±1. 60)pg/mL(P<0. 01),while the concentrations were decreased after adding SBS 203580(P<0. 05). Conclusions The HEEC viability was reduced by weak acidic stimulation,p38 MAPK may participate in the process by regulating the expression of IL-8 and IL-1β.

目的 构建尺寸可变纳米递送系统PAMAM/DOX-pep并进行表征,检测其理化性质并评价其体外抗肿瘤效果与靶向性。方法 将阿霉素（DOX）物理包埋在阳离子聚合物PAMAM的疏水空腔内,以4-（N-马来酰亚胺基甲基）环己烷羧酸N-羟基琥珀酰亚胺酯（SMCC）作为交联剂,采用金属基质蛋白酶（MMP-2）敏感的多肽pep（CPLGVRGC）串联小粒径纳米颗粒形成大尺寸纳米递送系统（PAMAM/DOX-pep）,对各纳米颗粒的粒径、电位、理化性质以及对小鼠乳腺癌细胞（4T1）的抑制作用、细胞摄取效果和核靶向作用进行检测。结果 PAMAM/DOX粒径约为10 nm,载药率为23%,多肽pep交联后形成的PAMAM/DOX-pep粒径约为200 nm,可在低pH下缓释DOX,7天内体外保持稳定且溶血率低、安全无毒,其与MMP-2共孵育后细胞摄取量与核靶向性显著增加。结论 尺寸可变纳米颗粒有助于克服尺寸所引发的递送障碍,将药物靶向递送至乳腺癌细胞核内并发挥作用,为纳米递送系统的设计提供了新策略。

Objective To construct and characterize the size-variable nano-delivery system PAMAM/DOX-pep,examine its physicochemical properties and evaluate its antitumor and targeting effects in vitro. Methods Small particle size PAMAM/DOX was obtained by physically encapsulating DOX within the hydrophobic cavity of the cationic polymer PAMAM. The large size nano-delivery system(PAMAM/DOX-pep)was formed by tandem linking small size nanoparticles by MMP-2 sensitive peptide pep(CPLGVRGC)using SMCC as a cross-linker. The particle size,potential,physical and chemical properties,inhibitory effect,cell uptake and nuclear targeting effect of each nanoparticle on mouse breast cancer cells(4T1)were detected. Results The particle size of PAMAM/DOX was about 10 nm,and the drug loading rate was 23%. PAMAMAM/DOX-pep,formed after cross-linking of peptide,had a particle size of about 200 nm,which could release DOX slowly at low pH,and remained stable,safe and non-toxic in vitro for 7 days with low hemolysis rate,and its cellular uptake amount and nuclear targeting rate increased significantly after co-incubation with MMP. Conclusions Size-variable nanoparticles overcome size-induced delivery barriers to target and deliver drugs to the 4T1 nucleus,providing a new strategy for the design of nano delivery systems.

严重烧伤后患者免疫功能的失调,易导致创面感染、全身炎症反应综合征、脓毒症、感染性休克等并发症,增加患者病死率。免疫细胞功能适度的活化将有助于烧伤患者抵御外界病原体的侵袭、促进创面的愈合,但功能过度激活或者功能低下,则会引发一系列严重的后果。本文旨在归纳严重烧伤后中性粒细胞、单核/巨噬细胞、肥大细胞、NK细胞及T淋巴细胞等免疫细胞的功能变化与炎症反应之间的关系,为完善烧伤患者诊疗、减少并发症、改善预后提供新的思路。

The imbalance of immune function in severely burned patients can easily lead to wound infection,systemic inflammatory response syndrome,sepsis,septic shock and other complications,which increase the mortality of patients. Moderate activation of immune cell function will help burned patients to resist the invasion of external pathogens and promote wound healing,but excessive activation or low function can lead to a series of serious consequences. The purpose of this paper is to summarize the relationship between the functional changes of immune cells such as neutrophils,monocytes/macrophages,mast cells,NK cells,T lymphocytes and inflammatory reaction after severe burns,and to provide new ideas for improving the diagnosis and treatment of burned patients,reducing complications and improving the prognosis.

卵巢扭转（OT）是女性常见急腹症之一,它可发生在任何年龄的女性,在儿童中也较为常见。OT是女童失去卵巢最常见的原因,临床上往往无法第一时间明确诊断,从而导致漏诊、误诊,这将会直接影响女性的内分泌及生殖功能,严重者甚至危及生命。虽然目前临床上普遍通过患者的临床表现及检查进行初步诊断,但多项研究显示,一些血液检验指标对于OT的诊断及与卵巢其他疾病的鉴别同样具有一定的帮助。因此,本文通过总结分析小儿OT的病因、临床表现、实验室检查、治疗及其相关诊断标志物,以提高临床医生对该病的认识。

目的 探究连续性静脉-静脉血液滤过（CVVH）联合HA330血液灌流在改善创伤脓毒症急性肾损伤患者肾功能及炎症反应中的应用效果。方法 选择我院2021年1月—2023年1月期间接诊的98例创伤脓毒症急性肾损伤患者开展研究,随机抽签法分为观察组（联合CVVH、HA330血液灌流治疗）、对照组（予以CVVH治疗）,各49例,对比临床疗效,包括肾功能、炎症反应、不良反应、预后情况。结果 治疗5 d后,观察组临床总有效率为93.84%,高于对照组73.47%（P<0.05）;观察组血清肌酐、尿素氮较对照组明显改善（P<0.05）;观察组IL-6、hs-CRP水平低于对照组（P<0.05）;观察组不良反应总发生率低于对照组（P<0.05）;观察组序贯器官衰竭估计评分、急性生理与慢性健康评分系统评分较对照组低（P<0.05）。结论 CVVH联合HA330血液灌流在改善创伤脓毒症急性肾损伤患者肾功能及炎症反应中的疗效良好,且安全性高,有利于减轻患者炎症反应,控制病情进展,从而改善肾功能及预后。

目的 探讨2型糖尿病（T2DM）患者慢性肾脏病（CKD）发生的危险因素以及其与肥胖之间的相关性。方法 选择2019年3月—2021年12月我院收治的552例T2DM患者作为研究对象,根据是否发生CKD进行分组,其中合并CKD患者136例、未合并CKD患者416例,对2组患者的一般资料及实验室指标进行单因素回归分析比较;对于未合并CKD的T2DM患者进行为期1年的随访,统计T2DM患者CKD的发生率,并针对随访群体的一般资料及实验室指标进行对比分析,通过单因素Logistic回归分析患者发生CKD的影响因素,了解T2DM患者CKD的发生与肥胖之间的关系。结果 合并CKD和未合并CKD的T2DM患者间的年龄、病程、肝功能指标、血脂指标中的低密度脂蛋白胆固醇（LDL-C）、高密度脂蛋白胆固醇（HDL-C）、肾功能指标中的尿酸、肾小球滤过率（eGFR）比较差异均无统计学意义（均P>0.05）,组间在性别构成、BMI、血压、白蛋白、血红蛋白、血脂指标中的总胆固醇（TC）及甘油三酯（TG）、血糖及肾功能指标中尿白蛋白/肌酐比（UACR）比较差异均有统计学意义（均P<0.05）。396例未合并CKD的T2DM患者随访结果显示,随访期间发生CKD患者123例、未发生CKD患者293例,组间的性别构成、BMI、舒张压、血红蛋白、丙氨酸氨基转移酶、白蛋白、总胆红素、TC、LDL-C、HDL-C、尿酸、糖化血红蛋白及eGFR比较差异均无统计学意义（均P>0.05）,而组间年龄、病程、收缩压、天冬氨酸氨基转移酶、TG、空腹血糖（FPG）及UACR比较差异均有统计学意义（均P<0.05）。单因素Logistic回归分析结果显示,T2DM患者发生CDK的独立危险因素包括肥胖和收缩压、TG及FPG等指标升高（P<0.05）。T2DM患者的BMI与CKD的发生有关,当患者的BMI在28~31 kg/m²之间时,其CKD的发生率明显增加。结论 T2DM患者的CKD发生与肥胖因素有一定相关性,危险因素包括肥胖、血脂血压血糖异常等,T2DM患者的BMI在28~31 kg/m²之间时,其发生CKD的风险会有所增加,故需要对患者的BMI进行有效控制,降低CKD发生率,以避免病情恶化。

目的 探究血清神经元特异性烯醇化酶（NSE）、振幅整合脑电图（aEEG）动态变化对早期预测窒息新生儿脑损伤的临床意义。方法 选择2022年3月–2023年3月在我院新生儿重症监护室接受治疗的窒息新生儿作为研究对象。按窒息程度分组：轻度窒息30例为A组,重度窒息30例为B组,无窒息的30例足月儿为C组。记录A、B、C组患儿出生后的血清NSE及aEEG,包括出生后24 h、3 d、7 d的血清NSE,出生后6 h、3 d、7 d的aEEG,了解血清NSE及aEEG变化。结果 B组在出生后24 h、3 d、7 d的血清NSE高于A组、C组,组间比较差异有统计学意义（P<0.05）。出生后6 h、3 d、7 d,aEEG背景活动、睡眠觉醒周期、痫性活动和窒息程度紧密相关。结论 血清NSE、aEEG可作为窒息新生儿脑损伤的监测,对于早期预测脑损伤极具临床应用价值。

目的 对老年心血管疾病患者膳食行为改善情况进行综合调查,并分析其相关影响因素。方法 通过随机抽样的方法,抽取2021年10月—2022年10月桥南街社区卫生服务中心≥65岁心血管疾病患者570例为本次研究样本,通过调查问卷的方式,收集其一般资料、对健康膳食知识与态度及膳食行为改善情况进行全面调查,根据膳食行为改善情况分为改善良好组及改善差组,并分析其膳食行为改善的相关影响因素。结果 570例患者,膳食行为改善良好480例（84.21%）,膳食行为改善差90例（15.79%）。其中近一年中日常增加果蔬摄入489例（85.79%）,增加奶类摄入355例（62.28%）,增加豆类摄入312例（54.74%）,减少食用盐摄入452例（79.30%）,减少油脂摄入415例（72.81%）,减少糖类摄入378例（66.32%）;2组患者在文化程度、居住方式、人均月收入、合并疾病种类、健康膳食知识知晓、健康膳食态度、社会环境支持等方面差异有统计学意义（P<0.05）;Logistic线性回归分析显示,文化程度、居住方式、合并疾病种类、健康膳食知识知晓、健康膳食态度、社会环境支持等为影响老年心血管疾病患者膳食行为改善的主要因素（P<0.05）。结论 该地区老年心血管疾病患者的膳食行为改善较好,但还有一定进步空间,目前存在知行不一致的情况,因此当地相关部门要加强宣教力度,促使其养成健康的膳食态度,共建健康的社会环境,使其膳食行为得以更好改善。