目的 观察并评估内毒素性急性肺损伤大鼠吸入一氧化氮后外周血中内皮祖细胞和炎症介质的变化情况。方法 90只SPF级健康大鼠分为3组,A组为正常对照组(n=30),B组为急性肺损伤组(ALI)(n=30), C组为一氧化氮(NO)组(n=30)。分别计算各组外周血内皮祖细胞(Endothelial progenitor cells,EPCs) 数量,同时监测肺组织中白细胞介素-10(Interleukin-10,IL-10)水平和髓过氧化物酶(Myeloperoxidase,MPO)活性。结果 我们成功建立了大鼠的ALI肺损伤模型, C组EPCs数量、MPO活性上升幅度均小于B组、而IL-10上升水平均高于B组,差异有统计学意义(P<0.05)。结论 大鼠吸入一氧化氮可减轻内毒素所致急性肺损伤程度,其机制可能与外周血中内皮祖细胞数量及MPO水平下降和IL-10水平上升有关。

Objective To investigate the effect of nitric oxide(NO) inhalation in endotoxin-induced acute lung injury mice. Methods Ninety SPF mice were randomly assigned to the normal group(group A), ALI group(group B)and ALI+NO group(group C). The number of endothelial progenitor cells was counted and the level of Interleukin-10(IL-10) and myeloperoxidase (MPO) were measured. Results Endotoxin administration resulted in pulmonary edema. The pulmonedema was lightened and the level of MPO were decreased by the inhalation of nitric oxide while the level of IL-10 increased. Conclusion NO inhalation can mitigate acute lung injure. The decline of EPCs and MPO and the increase of IL-10 may be one of the mechanism.

目的 对比微创稳定系统(LISS)与解剖板治疗股骨远端复杂骨折的疗效比较。方法 45例股骨远端复杂骨折分别应用LISS及解剖板治疗。其中LISS组25例,解剖板组20例。结果 术后LISS组随访12～18个月,平均14.1个月;解剖板组随访12～18个月,平均13.9个月。所有患者手术切口均一期愈合。骨折愈合时间及术后并发症发生总数两组比较差异无统计学意义。LISS组的植骨例数少于解剖板组。切口大小、手术时间、术中失血及Merohan疗效比较,LISS组优于解剖板组。结论 LISS及解剖板治疗股骨远端复杂骨折均可取得满意疗效,但LISS系统创伤小,骨折固定牢固,体现微创原则,是治疗股骨远端复杂骨折的新趋势。

目的 探讨经皮微创技术应用股骨近端解剖锁定钢板治疗高龄骨质疏松粗隆间骨折的治疗。方法 我院自2009年12月—2013年6月共收治高龄骨质疏松粗隆间骨折56例,男35例,女21例;年龄76～94岁,平均81岁。所有患者应用股骨近端解剖锁定钢板通过经皮微创置入技术治疗。根据Harris髋关节功能评分对治疗效果进行评定。结果 56例手术时间30～90 min,平均45 min;术中失血量70～250 mL,平均110 mL。全部患者获随访,时间6～13.5个月,平均9.5个月。X线骨折愈合时间3～6个月,平均3.5个月。其中优41例,良12例。结论 对于高龄骨质疏松患者粗隆间骨折,采用经皮微创置入股骨近端解剖锁定钢板内固定治疗,具有手术创伤小、出血少、安全可靠等优点,有良好的临床应用价值。

Objective To study the application of proximal femur anatomic locking plate with minimally invasive percutaneous plate osteosynthesis (MIPPO) techniques in the treatment of senile osteoporosis curative effect of intertrochanteric fractures in elderly patients. Methods We have treated 56 elderly patients of senile osteoporosis intertrochanteric fractures in December 2009 to June 2013, including 35 male and 21 female cases, aged 76~94, the average of 81. All patients were applied in the proximal femur anatomic locking plate with minimally invasive percutaneous plate osteosynthesis technology according to Harris hip joint function scale curative effect. Results 56 cases of operation time 30~90 min, an average of 45 min. Intraoperative blood loss was 70~250 ml, an average of 110 ml. All patients received follow-up from 6 to 13.5 months, an average of 9.5 months. The X-ray fracture healing time was from 3~6 months, 3.5 months on average. According to the Harris hip joint function scale: 41 cases was excellent, 12 cases was good. Conclusion For the senile osteoporosis intertrochanteric fracture, using the proximal femur anatomic locking plate with minimally invasive percutaneous plate osteosynthesis technology can make minimal trauma, less bleeding reliable fixation,and has good clinical application value.

目的 观察葛根素对新西兰白兔视网膜缺血/再灌注损伤组织中细胞凋亡的保护作用。方法 新西兰白兔30只随机分为缺血再灌注对照组和葛根素治疗实验组,各组右眼应用前房灌注加压法建立视网膜缺血再灌注模型,分别于再灌注后第12、24、72 h处死动物,摘除眼球,制作石蜡切片,用TUNEL法检测细胞凋亡,计算凋亡指数。结果 对照组缺血再灌注12 h在神经节细胞层和内核层可见凋亡细胞;24 h神经节细胞层细胞数有所减少,视网膜神经节细胞层、内核层及外核层均见凋亡细胞明显增多;72 h神经节细胞层细胞数明显减少,神经节细胞层、内核层及外核层仍见凋亡细胞,但较24 h有所减少。葛根素治疗视网膜的凋亡细胞在各个时间段的表达规律与对照组相似,但凋亡细胞计数在12 h,24 h,72 h均较对照组明显减少,两组间差异有统计学意义。结论 葛根素能减轻缺血-再灌注损伤的视网膜细胞凋亡,对视网膜有保护作用。

Objective To observe the protective effects of Puerarin on apoptosis of ischemic injury in rabbit retina. Methods Retinal ischemia was induced in rabbits by increasing intraocular pressure to 120 mmHg for 60 minutes. TdT-mediated biotin-dUTP nick end labelling(TUNEL) staining technique was used to examine the apoptosis of retinal ganglion cells in the control group and the puerarin treatment group. Results The number of apoptotic cells in 12, 24 and 72h after reperfusion in the puerarin treatment group was obvious lower than that in the control group(P<0.05). Conclusion Puerarin has protective effects in protecting against apoptosis in ischemia reperfusion injury of rabbit retina.

目的 观察动静平衡康复训练对胫骨平台骨折术后患者平衡和行走功能的影响。方法 将2012年7月—2014年12月100例胫骨平台骨折患者,随机分为两组,每组50例。对照组术后展开常规康复训练,观察组实施动静平衡康复训练,观察两组膝关节功能、康复效果以及肌力恢复情况。结果 观察组患者的膝关节功能优良率为98.0%,高于对照组的60.0%,差异有统计学意义(P＜0.05)。观察组患者的Lysholm评分,高于对照组(P＜0.05)。观察组患者的肌力恢复情况,优于对照组(P＜0.05)。结论 基于“动静平衡”理念针对胫骨平台骨折患者实施术后康复指导与训练,有利于促进患者关节功能以及肌力恢复,巩固康复疗效,在训练过程中实现动态平衡,具有积极的临床意义。

Objective To investigate the static and dynamic balance rehabilitation training on the tibial plateau fracture patients balance and walking functions. Methods 100 cases of patients with tibial plateau fractures from July 2012 to December 2014, were randomly divided into two groups, 50 cases of each group. The control group was launched conventional rehabilitation, observation group received static and dynamic balance rehabilitation training. The knee function, rehabilitation and muscle recovery of the two groups were observed and statistically analyzed. Results The knee function excellent rate of observation group was 98.0%, significantly higher than control group 60.0%, there was statistical significance(P＜0.05). Lysholm score of observation group was higher than control group(P＜0.05). Muscle recovery of observation group was better than control group(P＜0.05). Conclusion Based on the “static and dynamic balance” concept for tibial plateau fractures postoperative rehabilitation for patients with guidance and training, and it will be promoting joint function in patients with muscle recovery and consolidate the recovery effect, to achieve dynamic equilibrium in the training process, with positive clinical significance.

目的 了解近5年来阴沟肠杆菌在我院的临床分布及耐药性的变迁情况。方法 采用K-B纸片法进行药物敏感性测定,再用双纸片法检测超广普β-内酰胺酶(ESBLs)。结果 2010年1月—2014年12月我院共分离阴沟肠杆菌261株,其中2010年分离48株(18.4%)、2011年50株(19.2%)、2012年52株(19.9%)、2013年54株(20.7%)、2014年57株(21.2株%);主要分布于重症监护室(ICU)、呼吸内科、肝胆外科,分别占49.%(130株)、14.9%(39株)、11.9%(31株),标本来源主要为痰液、尿液及伤口分泌物,分别占52%、13.5%、12.8%,ESBLs菌株的检出率为29.9%(78株),产酶株的耐药性高于非产酶株,全部菌株对亚胺培南敏感。结论 阴沟肠杆菌主要引起呼吸道、尿路和各种伤口感染,多发于ICU患者,并且呈逐年增多趋势,产ESBLs在阴沟肠杆菌中广为流行,合理使用抗菌药物(尤其是第三代头孢菌素)是减少产ESBLs株流行的重要措施。

Objective To investigate the clinical distribution and antimicrobial resistance of infections caused by enterobacter cloacae in our hospital. Methods Antimicrobial susceptibility tests were done by Kirby-Bauer disk diffusion method. The extended-spectrum β-Lactamases (ESLBS) were detected by double disc diffusion test. Results A total of 261 strains of E cloacae were isolated from Jan 2010 to Dec 2014. The percentages of these strains isolated in 2010, 2011, 2012, 2013, 2014 were 18.4%, 19.2%, 19.9%, 20.7%, 21.2% respectively. E cloacae were mainly isolated from intensive care unit (ICU) (49.0%), respiratory medicine (14.9%) and surgery (11.9%) respectively. The percentages of these strains isolated from sputum, urine and wound secretion were 52.0% 13.5% and 12.8% respectively. The percentages of ESBLS producer was 29.9% (78 strains).Their resistance was obviously higher than that of non-ESBLS producer. But all strain were sensitive to imipenem. Conclusion E Cloacae caused infections of respiratory tract, urinary and wound principally in clinic. The most of which occured in ICU. The ESBLS are popular in E cloacae and show the increasing trend year by year. The restricted use of antimicrobial drug is a considerable measure which reduces prevalence of ESBLS producing strains.

目的 探讨子宫内膜微腺体癌的临床病理特征、诊断及鉴别诊断。方法 对1例首诊误诊为子宫颈微腺体增生的子宫内膜微腺体癌病例进行临床、病理组织学及免疫组织化学特征的观察及总结,同时进行相关文献复习。结果 本例患者年龄61岁,因绝经后阴道不规则流血1年就诊,B超提示子宫内膜不规则增厚,并行分段诊刮术,先后两次诊刮标本光镜下均见黏液性柱状上皮呈乳头状及网格状结构,细胞轻度异型,核分裂罕见,间质内大量中性粒细胞浸润伴腺上皮内“微脓肿”形成;免疫组化示:上皮成分P16弥漫强(+),CEA小灶(+),Vimentin弥漫(+),ER约90%(+,中-强),PR约90%(+,弱),Ki-67约3%(+),间质细胞CD10(+)、CD34(-)。结论 子宫内膜微腺体癌是一种极为罕见的子宫内膜黏液腺癌,其组织学形态与子宫颈良性病变微腺体增生十分相似,易于混淆,但通过免疫组化检查及详细地临床病史资料收集、分析,可以与其鉴别,从而做出正确地诊断。

Objective To investigate clinical and histopathological features, dignosis and differential diagnosis of the endometrial microglandular adenocarinoma (MGA). Methods The clinical and pathological features of microglandular adenocarinoma in a patient were observed. Immunohistochemical staining and literature review were also used. Results In the case, the age of patient was 61 years. Clinical manifestation was vaginal irregular bleeding for 1 year. Type-B ultrasound suggested endometrium was irregular thickening. Histologically, it was mainly composed of irregular shape, closely spaced small glands, and glandular cells was mild atypical. Mitosis was rarely observed. The endometrial stromata between gland were rare, but neutrophil were much observed with the formation of neutrophil microabscess in the glandular epithelium. Immunohistochemical study showed neoplastic cells were diffuse and strongly positivity for P16, diffuse positivity for vimentin, focally positive for CEA. ER and PR expression was found in approximately 90% tumor cells. The index of Ki-67 was about 3%. Interstitial cells were positivity for CD10, negativity for CD34. Conclusion The microglandular adenocarcinoma is a rare endometrial adenocarcinoma. It can be differentiated from cervical microglandular hyperplasia(MGH) and cervical mucinous adenocarcinoma by immunohistochemistry and morphological characteristics.

与正常组织细胞微环境相比,肿瘤微环境具有一定的异质性,包括偏酸性、氧化还原状态失衡、存在高浓度活性氧以及酶过量表达等。根据以上肿瘤微环境特点,可设计出一系列通过各种特殊微环境响应型连接臂相连的小分子或聚合物前药纳米粒。其中,多柔比星阿霉素作为一类最常见的广谱抗肿瘤药物在治疗肿瘤的过程中发挥重要作用。文章探讨了在肿瘤微环境特异性的生理状态下针对不同微环境所设计的多柔比星前药及其释放特性等,归纳总结了肿瘤微环境响应型多柔比星前药的研究进展。

Compared with normal tissue cell microenvironment, there is some differences in tumor microenvironment, such as partial acidity, imbalance of redox state, high concentration of reactive oxygen species and cathepsin. According to the above characteristics of tumor microenvironment, a series of small molecule or polymer prodrug nanoparticles connected by various special microenvironment responsive structures can be designed. Doxorubicin, as one of the most common broad-spectrum antitumor drugs, plays an important role in the treatment of tumors. This review discusses the doxorubicin prodrug designed for different tumor microenvironments under the physiological state of tumor microenvironment specificity and their release characteristics, and summarizes the research progress of tumor microenvironment-responsive doxorubicin prodrug.

       目的   构建并验证主动脉夹层B型（TBAD）患者急性期预后的列线图预测模型，帮助临床医生在急性期内更准确地评估TBAD患者的死亡风险，并制定更合适的治疗策略。方法   回顾性分析从重症监护医学信息数据库v2.2 中提取的399例 TBAD患者的人口学资料和临床资料，结局为TBAD患者急性期（≤14 d）内死亡。先采用最小绝对收缩选择算法回归筛选特征变量，再采用多因素分析确定独立预后因素，并据此构建预测模型。通过受试者工作特征曲线、校准曲线、决策曲线分析（DCA）评价列线图预测模型的性能和临床适用性。结果  APS Ⅲ评分、二氧化碳总量、红细胞分布宽度为TBAD患者14 d内死亡的独立预测因素。列线图预测模型在内部验证中的受试者工作特征曲线下面积为0.776（95% CI：0.691 ~ 0.860），Hosmer-Lemeshow 检验P=0.604，校准曲线和标准曲线高度重合，表明该模型具有良好的区分度和校准度。同时，DCA曲线显示，预测模型在大部分的阈值概率范围内提供了显著的净收益。结论   本研究基于APS Ⅲ评分、二氧化碳总量、红细胞分布宽度构建的列线图预测模型可以较准确地预测TBAD患者14 d内的死亡风险，有助于临床医生制定更合适的个体化治疗策略。

       Objective  To develop and verify a nomogram for predicting acute phase outcomes in patients with type B aortic dissection（TBAD），enabling clinicians to more precisely evaluate mortality  risk in TBAD patients during the acute stage and to devise better treatment plans．Methods  This retrospective study analyzed demographic and clinical data of 399 TBAD patients from the Medical Information Mart for Intensive Care IV v2.2，focusing on mortality within 14 days of the acute phase in TBAD patients．Initially，the Least Absolute Shrinkage and Selection Operator regression was employed for feature variable selection，and then multivariate analysis was used to identify independent prognostic factors for constructing the predictive model．The nomogram predictive model’s effectiveness and clinical applicability were assessed via the Receiver Operating Characteristic curve，calibration curve，and Decision Curve Analysis（DCA）．Results  Acute Physidogy Score Ⅲ score，total carbon dioxide，and red blood cell distribution width emerged as independent predictors of 14-day mortality in TBAD patients．The internal validation of the nomogram predictive model showed an area under the curve of 0.776（95%CI：0.691-0.860），with a Hosmer-Lemeshow test P-value of 0.604．The close alignment of the calibration and standard curves suggested the model’s strong discriminative power and calibration．Furthermore，the DCA curve  revealed that the predictive model offered substantial net benefits within a wide  range of threshold probabilities．Conclusions  This study's nomogram，developed using APS Ⅲ score，total carbon dioxide，and  red blood cell distribution width，accurately predicts the 14-day mortality risk in TBAD patients，assisting clinicians in creating better personalized treatment plans．

        目的   对入住重症监护病房（ICU）重症孕产妇患者的病种特征和住院费用进行分析。方法   从医院信息管理系统中搜索2009—2019年广州市某省级重症孕产妇救治中心ICU的重症孕产妇住院病例，对病例资料进行描述性流行病学分析。结果  2009—2019年该救治中心ICU共收治重症孕产妇1 616例，病种排名前五位依次为心血管疾病430例（26.61%）、血液及造血器官疾病310例（19.18%）、妊娠期特定并发疾病287例（17.76%）、消化系统疾病218例（13.49%）、呼吸系统疾病110例（6.81%）。患者经济负担中位数排名前五位依次为肌肉骨骼系统和结缔组织疾病（62 252.60元）、消化系统疾病（61 684.41元）、感染性疾病（42 945.70元）、血液及造血器官疾病（40 403.52元）、神经系统疾病（40 055.93元）。结论   入住ICU内的重症孕产妇以心血管疾病、血液及造血器官疾病为主，经济学分析表明肌肉骨骼系统和结缔组织疾病造成的经济损失较大。

       Objective  To analyze the disease characteristics and hospitalization expenses of  severe maternal patients in intensive care unit（ICU）．Methods  Hospitalized cases of severe maternal disease in  ICU of a provincial critical care center in Guangzhou from 2009 to 2019 were searched from the hospital information management system，and case data was analyzed by descriptive epidemiology．Results  From 2009 to 2019，a total of  1616 critically ill maternal  patients  received intensive care treatment at this center．The predominant diseases observed were cardiovascular disorders（26.61%），blood and hematopoietic organ diseases（19.18%），specific pregnancy-related complications（17.76%），gastrointestinal ailments（13.49%），and respiratory disorders（6.81%）．Among the top five patient groups，the median economic burden was the highest in musculoskeletal system and connective tissue diseases（62 252.600 yuan），followed by digestive system diseases（61 684.410 yuan），infectious diseases（42 945.700 yuan），blood and hematopoietic organ diseases（40 403.515 yuan），and nervous system disorders（40 055.930 yuan）Furthermore，a discernible correlation between hospitalization cost and length of stay was identified．Conclusions  Cardiovascular diseases and disorders of blood and hematopoietic organs are the primary causes for maternal admissions to ICU．Economic analysis shows that musculoskeletal system and connective tissues diseases cause bigger economic loss ．