系统性硬化症合并肺间质病变患者外周血中IL-8、CXCR1、CXCR2的表达及意义

目的分析系统性硬化症(SSc)合并肺间质病变(ILD)患者外周血中白介素8 (IL-8)、趋化因子受体1(CXCR1)、CXCR2表达的临床意义。方法选取2018年1月-2019年5月武汉市第五医院风湿免疫科治疗的系统性硬化症患者42例作为研究对象,其中合并ILD患者25例为SSc-ILD组,非ILD患者17例为SSc-非ILD组。另选取同期来院体检的健康者30例为健康对照组。检测3组受试者肺功能,外周血单个核细胞(PBMC)中CXCR1、CXCR2mRNA,血清IL-8、ESR、CRP、IgA、IgG、IgM、补体C3水平。采用Spearman进行检测指标的相关性分析。结果 SScILD组FEV1%、FEV1/FVC显著低于SSc-非ILD组和健康对照组(F/P=76.626/0.000,29.097/0.000),且SSc-非ILD组显著低于健康对照组(P<0.05);SSc-ILD组CXCR1、CXCR2 mRNA表达水平及血清IL-8、ESR、CRP、IgA、IgG、IgM水平显著高于SSc-非ILD组和健康对照组(F/P=581.600/0.000、401.103/0.000、149.551/0.000、34.990/0.000、37.207/0.000、189.508/0.000、117.657/0.000、12.708/0.000),且SSc-非ILD组各指标显著高于健康对照组(P<0.05);SSc患者外周血中CXCR1、CXCR2及血清IL-8水平与FEV1%呈显著负相关(r/P=-0.608/0.005、-0.538/0.048、-0.613/0.003),CXCR1、IL-8与FEV1/FVC呈显著负相关(r/P=-0.616/0.002、-0.581/0.0.15),CXCR2与FEV1/FVC无显著相关性(P>0.05);SSc合并ILD患者CXCR1、CXCR2、IL-8与CRP、ESR、IgA、IgG、IgM均呈正相关(P<0.05),与C3无显著相关性(P>0.05)。结论 IL-8与其受体CXCR1、CXCR2在系统性硬化症合并肺间质病变患者血清中均高表达,IL-8可能在SSc-ILD的发病机制中具有重要作用。     

右美托咪定联合利多卡因预处理对胸腔镜肺癌根治术患者围术期心脏不良事件的影响

目的:观察右美托咪定联合利多卡因预处理对胸腔镜肺癌根治术患者围术期心脏不良事件的影响。方法:择期行胸腔镜肺癌根治术的患者80例,采用随机数字表法将其分为右美托咪定联合利多卡因预处理组(DL组)与对照组(C组),每组40例,分别在麻醉诱导时静脉泵入右美托咪定1μg/(kg·h)及利多卡因2 mg/(kg·h)或生理盐水,持续泵注30 min。于术前,术后24、48、72 h采集静脉血标本,测定血清超敏肌钙蛋白T(hypersensitivity troponin T,hs-cTnT)和N-末端脑利钠肽原(N-terminal pro-brain natriuretic peptide,NT-proBNP)水平。记录术中、术后30 d心脏不良事件的发生情况。结果:2组患者术前血清hscTnT和NT-proBNP水平差异无统计学意义(P>0.05),术后48、72 h时血清hs-cTnT水平和术后24、48、72 h时NT-proBNP水平较术前明显升高(P<0.05);DL组在术后48 h时血清hs-cTnT水平和术后24、48、72 h时NT-proBNP水平明显低于C组(P...     

血浆脂蛋白相关磷脂酶A2与急性心肌梗死患者心功能的相关性研究

目的：研究急性心肌梗死患者血浆脂蛋白相关磷脂酶A2（Lp?PLA2）浓度变化情况及其与心肌梗死后心功能的相关性。方法：连续入选急性心肌梗死患者90例,测定患者入院即刻（T0）、入院次日（T1）、入院第3天（T2）和入院第7天（T3）血浆Lp?PLA2及心梗后1个月（T4）N端前体脑钠肽（NT?proBNP）水平,并采用二维心脏超声测定T1和T4患者左室射血分数（LVEF）,Pearson相关分析Lp?PLA2与LVEF及NT?proBNP的相关性。以43例同期入院稳定性心绞痛患者和48例健康体检者作为对照。结果：急性心肌梗死患者血浆Lp?PLA2水平呈动态改变,心梗发作时显著增高,而入院第7天后基本降至对照组水平［（61.42±36.99）mg/L vs.（49.83±27.17）mg/L,P > 0.05］。相关性分析显示入院即刻（T0）血浆Lp?PLA2水平与C反应蛋白水平（r=0.06,P > 0.05）及血浆肌钙蛋白T水平（r=-0.07,P > 0.05）均无显著相关性。进一步研究发现入院时（T0）血浆Lp?PLA2水平与T4血浆NT?proBNP水平（P=0.16,P > 0.05）、左室射血分数（LVEF）（r=-0.09,P > 0.05）及T4与T1 LVEF差值（ΔLVEF）（r=0.04,P > 0.05）均无显著相关性。结论：血浆Lp?PLA2水平反映了急性心肌梗死动脉斑块不稳定状态,但与急性心肌梗死患者梗死后心功能恢复情况无关。     

带锁髓内钉治疗股骨干骨折并发症原因分析及防治

目的提高带锁髓内钉的治疗效果,减少术中术后的并发症。方法自1998年10月～2001年10月用带锁髓内钉治疗的160例股骨干骨折,随访6～18个月。结果股骨颈骨折2例,主钉折断2例,锁钉折断2例,锁钉松动退出3例,术后感染4例,骨折延迟愈合6例。结论带锁髓内钉是治疗股骨干骨折较好的治疗方法,分析产生合并症的原因后采取各种防治措施可明显降低并发症的发生率。     

Reduced hip bone mineral density is related to physical fitness and leg lean mass in ambulatory individuals with chronic stroke

Following a stroke, the reduced level of physical activity and functional use of the paretic leg may lead to bone loss and muscle atrophy. These factors and the high incidence of falls may contribute to hip fractures in the stroke population. This study was the first to examine total proximal femur bone mineral content (BMC) and bone mineral density (BMD) and their relationship to stroke-specific impairments in ambulatory individuals with chronic stroke (onset >1 year). We utilized dual-energy X-ray absorptiometry (DXA) to acquire proximal femur and total body scans on 58 (23 women) community-dwelling individuals with chronic stroke. We reported total proximal femur BMC (g) and BMD (g/cm²) derived from the proximal femur scans, and lean mass (g) and fat mass (g) for each leg derived from the total body scans. Each subject was evaluated for ambulatory capacity (Six-Minute Walk Test), knee extension strength (hand-held dynamometry), physical fitness [maximal oxygen uptake (VO₂max)] and spasticity (Modified Ashworth Scale). Results showed that the paretic leg had significantly lower proximal femur BMD, lean mass and percent lean mass, but higher fat mass than the non-paretic leg for both men and women. Proximal femur BMD of the paretic leg was significantly related to ambulatory capacity ( r =0.33, P =0.011), muscle strength ( r =0.39, P =0.002), physical fitness ( r =0.57, P <0.001), but not related to spasticity ( r =–0.23, P =0.080). Multiple regression analysis showed that lean mass in the paretic leg was a major predictor ( r ²=0.371, P <0.001) of the paretic proximal femur BMD. VO₂max was a significant predictor of both paretic proximal femur BMD ( r ²=0.325, P <0.001) and lean mass in the paretic leg ( r ²=0.700, P <0.001). Further study is required to determine whether increasing physical fitness and lean mass are important to improve hip bone health in chronic stroke.     

Is Patient-Specific Instrumentation Accurate and Necessary for Open-Wedge High Tibial Osteotomy? A Meta-Analysis

The purpose of this meta-analysis was to identify if patient-specific instrumentation (PSI) could increase the accuracy of the correction in high tibial osteotomy (HTO) and to explore the assessment indices and the necessity of using a PSI in HTO. A systematic search was carried out using online databases. A total of 466 patients were included in 11 papers that matched the inclusion criteria. To evaluate the accuracy of PSI-assisted HTO, the weight bearing line ratio (WBL%), hip-knee-ankle angle (HKA), mechanical medial proximal tibial angle (mMPTA), and posterior tibial slope angle (PTSA) were measured preoperatively and postoperatively and compared to the designed target values. Statistical analysis was performed after strict data extraction with Review Manager (version 5.4). Significant differences were detected in WBL% (MD = −36.41; 95% CI: −42.30 to −30.53; p < 0.00001), HKA (MD = −9.95; 95% CI: –11.65 to –8.25; p < 0.00001), and mMPTA (MD = –8.40; 95% CI:−10.27 to −6.53; p < 0.00001) but not in PTSA (MD = 0.34; 95% CI: −0.59 to 1.27; p = 0.47) between preoperative and postoperative measurements. There was no significant difference between the designed target values and the postoperative correction values of HKA (MD = 0.14; 95% CI: −0.19 to 0.47; p = 0.41) or mMPTA (MD = 0.11; 95% CI −0.34 to 0.55; p = 0.64). The data show that 3D-based planning of PSI for HTO is both accurate and safe. WBL%, HKA, and mMPTA were the optimal evaluation indicators of coronal plane correction. Sagittal correction is best evaluated by the PTSA. The present study reports that PSI is accurate but not necessary in typical HTO.     

改良钳夹型脊髓损伤大鼠模型的建立及神经功能评价简

目的：建立一种稳定可靠、操作简单的不完全性脊髓损伤动物模型,并对其神经功能进行初步评价。方法将50只SD大鼠随机分为模型组、假手术组。采用改良钳夹法建立大鼠脊髓损伤模型,观察不同时间点大鼠行为学运动功能（BBB）评分、脊髓组织形态变化及损伤段脊髓的细胞凋亡因子半胱氨酸蛋白酶3（Caspase-3）阳性细胞表达的情况。结果模型组大鼠各时间点BBB评分均明显低于假手术组（P＜0.05）,假手术组各时间点大鼠脊髓组织中Caspase-3阳性细胞表达明显低于模型组（P＜0.05）。结论成功制备了稳定可靠、操作简单的不完全性脊髓损伤动物模型。     

Diagnostic and therapeutic evaluation of 111In-vinorelbine-liposomes in a human colorectal carcinoma HT-29/luc-bearing animal model

Colorectal carcinoma is a highly prevalent and common cause of cancer in Taiwan. There is still no available cure for this malignant disease. To address this issue, we applied the multimodality of molecular imaging to explore the efficacy of diagnostic and therapeutic nanoradiopharmaceuticals in an animal model of human colorectal adenocarcinoma [colorectal cancer (CRC)] that stably expresses luciferase (luc) as a reporter. In this study, an in vivo therapeutic efficacy evaluation of dual-nanoliposome (100 nm in diameter) encaged vinorelbine (VNB) and (111)In-oxine on HT-29/luc mouse xenografts was carried out. HT-29/luc tumor cells were transplanted subcutaneously into male SCID mice. Multimodality of molecular imaging approaches including bioluminescence imaging (BLI), gamma scintigraphy, whole-body autoradiography (WBAR) and in vivo tumor growth tracing, histopathology and biochemistry/hematology analyses were applied on xenografted SCID mice to study the treatments with 6% polyethylene glycol (PEG) of (111)In-NanoX/VNB-liposomes. In vivo tumor growth tracing and BLI showed that tumor volume could be completely inhibited by the combination therapy with (111)In-VNB-liposomes and by chemotherapy with NanoX/VNB-liposomes (i.e., without Indium-111) (P<.01). The nuclear medicine images of gamma scintigraphy and WBAR also revealed the conspicuous inhibition of tumor growth by the combination therapy with (111)In-VNB-liposomes. Animal body weights, histopathology and biochemistry/hematology analyses were used to confirm the safety and feasibility of radiopharmaceuticals. A synergistic therapeutic effect on CRC xenografted SCID mice was proven by combining an Auger electron-emitting radioisotope (Indium-111) with an anticancer drug (VNB). This study further demonstrates the beneficial potential applications of multimodality molecular imaging as part of the diagnostic and therapeutic approaches available for the evaluation of new drugs and other strategic approaches to disease treatment.