均匀设计法优化藏药小檗皮的煎煮法提取工艺

目的 优化藏药小檗皮的煎煮法提取工艺.方法 采用综合评分法和均匀设计法,以浸膏量、总生物碱含量为指标,对藏药小檗皮的煎煮法提取工艺参数进行优化.结果 藏药小檗皮的煎煮法提取工艺优化条件为:取小檗皮饮片,加水6倍量,煎煮4次,每次1h,其中第一次加水后浸泡4h.结论 建立的藏药小檗皮的提取工艺稳定、可行,可用于藏医临床制备小檗皮膏.     

RNAi沉默STAT3基因对结肠癌HCT116细胞侵袭的调控

目的:观察RNA干扰沉默STAT3基因对结肠癌细胞侵袭的影响,并探讨其可能机制。方法:应用STAT3小干扰RNA(small interfering RNA,siRNA)转染处理人结肠癌细胞系HCT116后,采用RT-PCR检测STAT3 mRNA表达,软琼脂集落培养试验检测锚着不依赖性增殖,Boyden小室模型试验检测癌细胞的侵袭性,琼脂糖凝胶电泳和TUNEL检测癌细胞失巢凋亡。结果:STAT3 siRNA可有效抑制结肠癌细胞集落生长和侵袭能力,且与浓度相关。琼脂糖凝胶电泳和TUNEL结果显示,STAT3 siRNA转染可诱导结肠癌细胞失巢凋亡,且与浓度相关。结论:STAT3 siRNA可抑制结肠癌细胞的恶性侵袭,其机制与诱导失巢凋亡有关。     

冯明清教授复脾汤治疗2型糖尿病机理探讨

冯明清教授为河南中医学院博士生导师，从医任教数十载，知识渊博，医术精湛，医德高尚，临床擅长内科杂病治疗，几十年来一直坚持研究《内经》理论，对糖尿病的发病机制及治疗方面有自己独到的见解和理论思想。他用中医学理论的观点解释糖尿病的发病机制、病理过程，从而在糖尿病的治疗上，总结出一套行之有效的方法。学生有幸从师学习，受益匪浅。现将冯明清教授所拟“复脾汤”治疗糖尿病的机理探讨如下。     

Predictors of secondary tricuspid regurgitation after left-sided valve replacement

PURPOSE: To evaluate the risk factors of tricuspid regurgitation (TR) after left-sided valve replacement (LSVR) and plan the initial surgical treatment of TR. METHODS: Two hundred and forty-eight patients, including 217 patients in the LSVR group and 31 patients in the LSVR+DeVega group, were followed up. A retrospective analysis was performed on 14 characteristics in the LSVR group. Variables were used to evaluate predictors of TR progression after single LSVR by either a univariate or multivariate analysis. DeVega's tricuspid annuloplasty was evaluated on progress of TR by univariate analysis. RESULTS: The mean follow-up was 5.2 +/- 2.9 (range, 3-16) years after surgery. In a univariate analysis, atrial fibrillation, huge left atrium, long time from onset to surgery, tricuspid rheumatic changes, preoperative +2 or +3 TR, the degradation of left ventricular ejection fraction, augmented right atrium, and single mitral valvular disease were significant risk factors for TR development. A multivariate analysis indicated that the four items mentioned above were statistically significant predictors of TR after surgery. The progress of TR in the LSVR+DeVega group was significantly less than in the LSVR group. CONCLUSIONS: An aggressive repair of accompanying TR should be performed at the time of initial surgery in patients with a huge left atrium, atrial fibrillation, long time from onset to surgery, or tricuspid rheumatic changes. DeVega's tricuspid annuloplasty therefore helps prevent a progression of TR.     

Pharmacokinetics, tissue distribution, metabolism, and excretion of depside salts from Salvia miltiorrhiza in rats.

Salviae miltiorrhiza, a traditional Chinese medical herb known as "Danshen," has been widely used in clinics to improve blood circulation, relieve blood stasis, and treat coronary heart disease. Depside salts from S. miltiorrhiza are a novel drug in which magnesium lithospermate B and its analogs are the active components. The pharmacokinetics, tissue distribution, metabolism, and excretion of three of the major components, lithospermic acid B, rosmarinic acid (RA), and lithospermic acid (LA), were studied by liquid chromatography-tandem mass spectrometry following intravenous administration in Sprague-Dawley rats. The elimination half-lives for LSB, RA, and LA were 1.04, 0.75, and 2.0 h, respectively, when 60 mg/kg S. miltiorrhiza depside salts were administrated. The areas under the curve for LSB, RA, and LA were 51.6, 6.6, and 25.2 mg . h/l, respectively, and the values decreased in the individual tissues in the following order: kidney > lung > liver > heart > spleen > brain for LSB; kidney > lung > heart > liver > spleen > brain for RA; and heart > lung > kidney > liver > spleen > brain for LA. After intravenous administration of 60 mg/kg S. miltiorrhiza depside salts, 86% of the LSB was excreted in the bile within 6 h. The main metabolites M1 and M2 were found in the serum. Overall, the results show that depside salts from S. miltiorrhiza are rapidly and widely distributed to tissues after intravenous administration in rats but that they are also rapidly cleared and excreted.     

不同气腹压对腹腔镜胃癌根治术的影响

目的 评价深度肌松条件下低气腹压对腹腔镜胃癌根治术（LAG）患者炎性因子、氧化应激和远端大网膜毛细血管内皮细胞形态的影响。
方法 选择2022年1—6月择期行LAG患者60例,男45例,女15例,年龄40～75岁,BMI 18～30 kg/m²,ASA Ⅰ或Ⅱ级。采用随机数字法将患者分成两组：低气腹压组（PL组）和对照组（PH组）,每组30例。两组均采用深度肌松条件（PTC计数为1或2）,PL组气腹压设定为10 mmHg,PH组气腹压设定为14 mmHg。记录气腹维持时间、手术时间、麻醉时间、拔管时间、PACU停留时间、术后住院时间及术后48 h内PCIA有效按压次数、PCIA总按压次数、补救镇痛例数。记录麻醉诱导前5 min、关腹前5 min、术后24 h血浆白细胞介素-1β（IL-1β）、白细胞介素-6（IL-6）和肿瘤坏死因子-α（TNF-α）浓度、丙二醛（MDA）、超氧化物歧化酶（SOD）和还原型谷胱甘肽（GSH）含量。观察进腹后5 min、关腹前5 min大网膜毛细血管内皮细胞形态。
结果 与PH组比较,PL组术后48 h内PCIA有效按压次数、PCIA总按压次数明显减少（P<0.05）,关腹前5 min、术后24 h IL-6浓度明显降低（P<0.05）,关腹前5 min MDA含量明显降低（P<0.05）。关腹前5 min PL组毛细血管内皮细胞轻度水肿,细胞内积液致细胞厚度不均匀,细胞核轻度肿胀、收缩功能稍减弱,血管管腔内径变窄;PH组毛细血管内皮细胞严重水肿、肿胀,细胞膜内积液、增厚明显,细胞核肿胀、几乎失去收缩功能,血管管腔极度缩窄,接近于全部闭塞。
结论 低气腹压可以降低LAG患者血浆炎性因子浓度,减轻术后疼痛、氧化应激和远端大网膜毛细血管内皮细胞损伤。     

胃十二指肠疾病患者感染幽门螺杆菌的cagA基因和血清CagA抗体状况

目的 :探讨幽门螺杆菌cagA基因和血清CagA抗体与胃十二指肠疾病的关系。方法 :用聚合酶链反应方法测定 62株由慢性胃炎、消化性溃疡和胃癌患者感染HpcagA基因 ;用酶免疫方法测定同一患者血清CagA抗体。结果 :HpcagA基因阳性率为 5 6.45 %。慢性胃炎、消化性溃疡和胃癌患者感染HpcagA基因阳性率分别为 5 5 .5 6%、5 4.17%和 63 .64 % ,三种疾病患者之间感染Hp的cagA基因阳性率无显著差异 (P >0 .0 5 ) ;慢性胃炎、消化性溃疡和胃癌患者血清CagA抗体阳性率分别为 70 .3 7%、79.17%和 40 .0 0 % ,血清CagA抗体总阳性率为 68.85 %。慢性胃炎、消化性溃疡和胃癌患者之间血清CagA抗体阳性率无显著差异 (P >0 .0 5 )。结论 :HpcagA基因和血清CagA抗体与Hp感染个体发生的不同类型胃十二指肠疾病之间无关联     

彩色多普勒血流显像在肾脏占位病变中的应用

应用彩色多普勒血流显像检查肾脏占位病变３６例，其中肾脏恶性肿瘤２７例，良性占位病变９例，与周围肾实质对比，肾脏恶性肿瘤显示肾脏轮廊失常，边缘不整，中等强度水平回声。彩色多普勒血流显像示肿块内部及周边血流检出率为９３％（２５／２７），肾脏良性占位血流检出率为１１％（１／９），经统计学处理，相差显著（Ｐ＜０．０１）。彩色多普勒血流显像为临床提供了更多有益的鉴别诊断资料，提高了肾脏占位病变的诊断水平。     

lncRNA SMAD5-AS1在肺腺癌细胞中的表达及其通过Wnt/β-catenin通路对癌细胞增殖、侵袭、迁移的影响

目的 探讨长链非编码RNA(lncRNA)SMAD家族成员5反义RNA1(SMAD5-AS1)在肺腺癌(LUAD)中的表达及其对LUAD细胞恶性生物学行为的影响,并分析其潜在机制。方法 通过生物信息学网站对LUAD组织中lncRNA SMAD5-AS1的表达进行分析;应用实时荧光定量PCR(qRT-PCR)检测72例LUAD组织与邻近正常组织以及人正常支气管上皮细胞(BEAS-2B)与人LUAD细胞(SPC-A-1、A549、H1299、LTEP-a-2)中lncRNA SMAD5-AS1表达水平。体外培养对数生长期的SPC-A-1和H1299细胞,分为SPC-A-1对照组(SPC-A-1-Ctr组)、SPC-A-1+sh-NC组、SPC-A-1+sh-SMAD5-AS1组、H1299对照组(H1299-Ctr组)、H1299+LV5-NC组、H1299+LV5-SMAD5-AS1组。采用携带lncRNA SMAD5-AS1敲除的短发夹RNA(sh-SMAD5-AS1)和lncRNA SMAD5-AS1过表达的重组质粒(LV5-SMAD5-AS1)及相应空载体的重组慢病毒转染细胞,qR...     

血清25-羟维生素D和白细胞介素-22对急性肺炎患儿病情的诊断价值

目的 探究血清25-羟维生素D[25(OH)D]和白细胞介素-22(IL-22)对急性肺炎患儿病情的诊断价值。方法 选取2021年3月至2022年3月自贡市第一人民医院收治的96例急性重症肺炎患儿作为重症肺炎组,另选96例普通肺炎患儿作为普通肺炎组、96例体检健康儿童作为健康对照组。采用化学发光微粒子免疫检测法检测血清25(OH)D水平,采用酶联免疫吸附法（ELISA）检测IL-22水平;采用Pearson法分析重症肺炎患儿血清25(OH)D、IL-22水平与急慢性健康状况评分Ⅱ（APACHEⅡ评分）、序贯器官衰竭评分（SOFA评分）的相关性;采用受试者工作特征（ROC）曲线评估25(OH)D、IL-22对重症肺炎患儿危重症的诊断价值。结果 重症肺炎患儿血清25(OH)D与APACHEⅡ评分及SOFA评分呈负相关（r=-0.521、-0.484,P<0.05）,血清IL-22与APACHEⅡ评分及SOFA评分呈负相关（r=-0.614、-0.419,P<0.05）。ROC曲线显示,25(OH)D对危重症诊断的曲线下面积（AUC）为0.745,IL-22对危重症诊断的AUC为...