急性缺氧条件下氰化钠中毒对大鼠脑组织能量代谢的影响

目的探讨急性高原缺氧条件下氰化钠中毒对大鼠脑组织能量代谢的影响。方法雄性sD大鼠,分为平原组和高原组。平原组动物在本地常规实验室内处理。高原组动物放置于模拟4000m海拔高度的低压舱内3d后开始实验。为大鼠腹腔注射氰化钠（NaCN）3．6mg／kg染毒,于0、0．5、1、2、4、6h6个时相点麻醉后断头取脑。以干湿质量法测定脑组织含水量,伊文思蓝法检测脑组织血管通透性,高效液相色谱（high performance liquid chromatography,HPLC）法测定大鼠脑纹状体和海马组织腺苷三磷酸（adenosine triphosphate,ATP）、腺苷二磷酸（adenosine diphosphate,ADP）和腺苷-磷酸（adenosine monophosphate,AMP）含量。结果与平原组比较,高原缺氧环境氰化钠中毒大鼠脑组织含水量增加,纹状体和海马组织ATP和ADP含量减少,AMP含量增加。结论高原缺氧可导致大鼠脑组织腺苷酸能量代谢障碍,缺氧条件下氰化钠中毒可进一步加重脑组织能量代谢障碍,同时脑水肿也进一步加重。     

Network pharmacology-based pharmacological mechanism prediction on Eucommia ulmoides against rheumatoid arthritis

Rheumatoid arthritis (RA) is a common chronic autoimmune disease characterized by synovial inflammation and progressive joint destruction. Eucommia ulmoides (EU) is a kidney-tonifying Chinese medicine that has been applied to treat RA for decides. The present study aims to explore pharmacological mechanisms of EU against RA using network pharmacology approach. Traditional Chinese Medicine Systems Pharmacology (TCMSP) database was used to screen active ingredients of EU, and their relative targets were fished from UniProt database. RA-related targets were screened from GeneCards database and DisGeNET database. The overlapping genes between EU and RA were identified by Venn diagram, and further analyzed for protein-protein interaction (PPI), Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG). Fifty active ingredients were identified in EU, and corresponded to 207 targets. Meanwhile, 499 targets were closely associated with RA development. A total of 50 overlapping genes between EU and RA were identified, which were regarded as therapeutically relevant. GO enrichment analysis indicated that EU exerted antiRA effects depending on regulating multiple biological processes including inflammatory response, oxidative stress, cell apoptosis and matrix catabolism. Several key pathways such as TNF pathway, IL-17 pathway, T cell receptor pathway, NOD-like receptor pathway and Toll-like receptor pathway, were involved in the above biological processes. Network pharmacology revealed that EU exerts therapeutic effects on RA through multi-ingredients, multi-targets and multi-pathways, which provides basis for its clinical application and promising directions for subsequent research.     

缺氧对成熟脂肪细胞去分化影响的实验研究

目的 研究缺氧环境下成熟脂肪细胞体外培养的形态学变化,探讨缺氧环境对成熟脂肪细胞去分化的影响.方法 从成人吸脂术后抽吸物提取脂肪组织来源的干细胞,诱导为成熟脂肪细胞,在缺血缺氧的环境下培养.观察各时间段细胞的形态变化.结果 由脂肪组织来源的干细胞诱导而成的成熟脂肪细胞,在缺氧环境培养数日后,细胞从圆形变为可持续分裂的成纤维细胞状细胞.结论 成熟的脂肪细胞在一定条件下可以去分化为成纤维细胞状细胞.     

聚酰胺-胺型树枝状高聚合物介导survivin反义寡核苷酸抑制结直肠癌裸鼠皮下移植瘤生长的作用

目的 探讨聚酰胺-胺型树枝状高聚合物(PAMAM)介导survivin反义寡核苷酸(survivin-ASODN)对结直肠癌裸鼠移植瘤的抑制作用.方法 以人结直肠癌细胞SW620裸鼠皮下注射建立结直肠癌裸鼠皮下移植瘤模型.将PAMAM和阳离子脂质体分别与survivin-ASODN混合得到载反义基因转染复合物.透射电镜观察复合物的形态.激光散射粒径分析仪测定粒径,zeta电位分析仪测定复合物的zeta电位,离心法和紫外分光分度仪测定复合物的包封率和体外DNA释放速度.将两种反义基因复合物注射裸鼠移植瘤体内,观察两组移植瘤体积,Western bloting方法检测移植瘤组织中survivin基因的表达.结果 PAMAM-survivin-ASODN复合物的粒径小于脂质体-survivinASODN复合物的粒径(P〈0.01),而zeta电位高于PAMAM-survivin-ASODN复合物zeta电位(P<0.05),基因包封率两组无显著差异.PAMAM对DNA持续释放达14d.但脂质体复合物只持续5 d.PAMAM-survivin-ASODN复合物治疗组裸鼠移植瘤survivin蛋白表达低于脂质体-survivin-ASODN复合物组(P<0.05).PAMAM-survivin-ASODN复合物治疗组移植瘤体积低于脂质体-survivin-ASODN复合物组(P<0.05).结论 PAMAM能将survivin-ASODN高效递送到结直肠癌移植瘤细胞.降低survivin蛋白的表达,抑制移植瘤生长.     

情景式引导联合针对性健康教育在永久性起搏器植入术后患者功能锻炼中的应用观察

目的:分析永久性起搏器植入手术患者采用情景式引导以及针对性健康教育对患者功能锻炼的影响.方法:选择在某院进行永久性起搏器植入手术治疗的74例患者为研究对象,其治疗时间均在2018年11月～2019年11月之间,采取随机数字排列表法将其分为常规组和实验组各37例.常规组患者实施基础健康教育指导,实验组患者实施情景式引导以...     

桡动脉穿刺冠状动脉内介入治疗的临床应用

目的：探讨经桡动脉穿刺选择性冠状动脉造影及冠状动脉腔内成形术（PTCA）及支架术的临床意义。方法：对102例具备冠状动脉造影适应证的患者,采用经桡动脉穿刺法行右、左冠状动脉造影,并根据冠状动脉造影结果决定是否行经皮冠状动脉腔内成形术（PTCA）及支架术。结果：冠状动脉狭窄（50-70）％21例（21／102,占21％）,〉75％以上68例（68／102,占67％）,68例行PTCA及支架植入术,〈50％13例（13／102,占12％）,冠状动脉正常25例（25／70,占35．5％）。结论：通过冠状动脉造影,可以定性诊断,指导治疗;桡动脉穿刺具有出血并发症少等优点。     

肿瘤标志物检测对卵巢成熟、未成熟畸胎瘤的诊断价值

背景与目的:卵巢成熟、未成熟畸胎瘤术前鉴别诊断较困难,本研究期望通过血清肿瘤标志物联合检测的方法,为其诊断及鉴别诊断提供有价值依据。方法:收集1995年1月至2005年12月在中山大学肿瘤防治中心初治并经病理确诊为单纯型卵巢畸胎瘤的272例患者的临床资料,统计分析血清糖链抗原125(carbohydrate antigen125,CA125)、糖链抗原153(CA153)、糖链抗原199(CA199)、神经元特异性烯醇化酶(neuron specific enolase,NSE)、甲胎蛋白(alpha-fetoprotein,AFP)、癌胚抗原(carcinoembryonic antigen,CEA)的检测水平在卵巢成熟及未成熟畸胎瘤中的差异。结果:254例卵巢成熟畸胎瘤患者,中位年龄30岁,血清CA125、CA153、CA199、NSE、AFP、CEA平均值分别为25.5×103u/L,11.8×103u/L,106.6×103u/L,12.6μg/L,2.7μg/L和2.5μg/L。18例卵巢未成熟畸胎瘤患者,中位年龄23岁,上述6项指标的平均值分别为140.3×103u/L,16.8×103u/L,112.0×103u/L,18.0μg/L,369.5μg/L和3.2μg/L。未成熟畸胎瘤患者血清中CA125、CA153、AFP平均水平及表达阳性率均高于成熟畸胎瘤患者,差异有统计学意义(P<0.05)。单独应用一项指标,CA125、CA153、AFP对未成熟畸胎瘤诊断性能的特异度均较高,而CA125的灵敏度最高(50.0%)。使用CA125、CA153、AFP三项指标联合检测明显提高了灵敏度(71.4%)。结论:术前肿瘤标志物,尤其是CA125、CA153、AFP联合检测对卵巢未成熟型与成熟型畸胎瘤的鉴别诊断有一定参考价值。     

针灸推拿联合腰部核心肌力训练在腰椎间盘突出症患者中的应用效果

目的 探讨针灸推拿联合腰部核心肌力训练对腰椎间盘突出症患者腰椎功能障碍指数（ODI）评分、腰背肌力及简式疼痛问卷表（MPQ）评分的影响。方法 选取2017年1月至2019年8月在辽宁省人民医院骨科接受治疗的136例腰椎间盘突出症患者作为研究对象,采用随机数字表法将其分为研究组（n=68）和对照组（n=68）。对照组患者采用腰部核心肌力训练治疗的方法,研究组患者在对照组基础上采用针灸推拿治疗的方法。比较两组患者的ODI评分、腰背肌力、MPQ各项评分及总有效率。结果 治疗后,两组患者的ODI评分均低于治疗前,差异有统计学意义（P<0.05）,且研究组患者的ODI评分低于对照组,差异有统计学意义（P<0.05）;治疗后,两组患者的腰背肌力均优于治疗前,差异有统计学意义（P<0.05）,且研究组患者的腰背肌力优于对照组,差异有统计学意义（P<0.05）;治疗后,两组患者的MPQ各项评分均低于治疗前,差异有统计学意义（P<0.05）,且研究组患者的MPQ各项评分低于对照组,差异有统计学意义（P<0.05）;治疗后,研究组患者的总有效率高于对照组,差异有统计学意...     

Distinct histopathological phenotypes of severe alcoholic hepatitis suggest different mechanisms driving liver injury and failure

Intrahepatic neutrophil infiltration has been implicated in severe alcoholic hepatitis (SAH) pathogenesis; however, the mechanism underlying neutrophil-induced injury in SAH remains obscure. This translational study aims to describe the patterns of intrahepatic neutrophil infiltration and its involvement in SAH pathogenesis. Immunohistochemistry analyses of explanted livers identified two SAH phenotypes despite a similar clinical presentation, one with high intrahepatic neutrophils (Neu^hi), but low levels of CD8⁺ T cells, and vice versa. RNA-Seq analyses demonstrated that neutrophil cytosolic factor 1 (NCF1), a key factor in controlling neutrophilic ROS production, was upregulated and correlated with hepatic inflammation and disease progression. To study specifically the mechanisms related to Neu^hi in AH patients and liver injury, we used the mouse model of chronic-plus-binge ethanol feeding and found that myeloid-specific deletion of the Ncf1 gene abolished ethanol-induced hepatic inflammation and steatosis. RNA-Seq analysis and the data from experimental models revealed that neutrophilic NCF1-dependent ROS promoted alcoholic hepatitis (AH) by inhibiting AMP-activated protein kinase (a key regulator of lipid metabolism) and microRNA-223 (a key antiinflammatory and antifibrotic microRNA). In conclusion, two distinct histopathological phenotypes based on liver immune phenotyping are observed in SAH patients, suggesting a separate mechanism driving liver injury and/or failure in these patients.     

肝脏血管平滑肌脂肪瘤的诊治分析

目的 总结肝脏血管平滑肌脂肪瘤( hepatic angiomyolipoma,HAML)的临床、影像及病理特点,提高对HAML的诊治水平. 方法 收集新疆医科大学附属肿瘤医院3例经手术切除和术后病理确诊的HAML患者,结合相关文献,分析肝HAML的临床表现、典型影像及病理学特点.结果 1例术前确诊,另2例误诊为肝脏其他肿瘤.3例术后随访32～39月,均未见肿瘤复发及转移.临床上,HAML与其他肝良性肿瘤相比无特异性.因3种组织比例差异,影像学表现呈现多样性,在众多影像检查中以CT诊断率最高.常规病理检查加免疫组化可确诊及分型,其中免疫组化标记HMB-45阳性具有重要诊断意义. 结论 HAML是一种少见的肝脏良性肿瘤,术前诊断率低,但只要掌握其影像特点,结合临床病史及实验室检查,术前确诊已成为可能.积极手术治疗,预后良好.