腔内激光联合高位结扎治疗原发性下肢静脉曲张术后抗凝与否的随机对照研究

目的探讨下肢静脉腔内激光治疗（Endovenous Laser Treatment,EVLT）联合大隐静脉（Great Saphenous Vein,GSV）高位结扎治疗原发性下肢静脉曲张术后是否需要抗凝治疗。方法本实验设计为前瞻性的随机对照临床研究,将原发性下肢静脉曲张患者189例,随机分为对照组（A组）,患者96例;抗凝组（B组）,患者93例。两组患者均进行静脉腔内激光治疗及大隐静脉高位结扎术,B组患者术后给予皮下注射低分子肝素,A组术后不给予低分子肝素,其它处理相同。观察两组患者术后3d、2周和3个月术肢有无深静脉血栓形成。所有患者随访时间3个月。结果189例原发性下肢静脉曲张患者,在术后随访期间,仅A组有1例发生术肢深静脉血栓形成（Deep Vein Thrombosis,DVT）;其余无一例发生DVT和肺栓塞。A、B两组间术后下肢深静脉血栓形成发病率无显著性意义（P〉0．05）。结论腔内激光联合高位结扎治疗原发性下肢静脉曲张术后是否应用抗凝药物对预防下肢深静脉血栓形成没有显著性影响,术后不需要常规应用抗凝药物。     

广西地区0—5岁儿童呼吸道感染肺炎链球菌耐药性研究

目的了解广西地区0～5岁儿童呼吸道感染肺炎链球菌对抗菌药物的耐药状况,为临床用药提供依据。方法肺炎链球菌分离自2009年10月-20012年9月在广西壮族自治区妇幼保健院住院的0～5岁肺炎患儿,采用CLSI2008年修改判断标准,MIC法检测菌株对抗生素的敏感性。结果3a间肺炎链球茵对青霉素的耐药率为0．72％,0,0;头孢曲松耐药率为0．36％,7．05％．27．20％,头孢曲松耐药全部分布在MIC高值;头孢噻肟耐药率为12．23％,11．45％,26．49％,头孢噻肟耐药MIC值≥8mg／L的菌株分别占0．0％,42．31％,90．32％。肺炎链球菌对厄他培南敏感率为100％,100％,75．64％。几乎全部菌株（94．60％,98．24％,98．72％）对红霉素耐药,对万古霉素和左氧氟沙星有很高的敏感率。肺炎链球菌对阿莫西林、头孢曲松、头孢噻肟、红霉素、克林霉素、复方新诺明耐药率的趋势卡方检验,对青霉素敏感、中介率趋势卡方检验,年度间比较均有显著性差异（P均〈0．01）。结论广西地区0～5岁儿童呼吸道感染肺炎链球菌对青霉素耐药率低,青霉素中介率、头孢曲松耐药率、头孢噻肟耐药率逐年上升,临床治疗O～5岁儿童肺炎链球菌感染的肺炎应加大青霉素剂量,或根据药敏结果选用抗生素是安全有效和可行的。     

高频振荡通气对新生儿呼吸衰竭氧合改善的临床研究

目的探讨高频振荡通气(HFOV)治疗新生儿呼吸衰竭的疗效。方法采用HFOV结合肺复张策略,实现经皮氧饱和度≥0.9。结果 20例患儿在施行HFOV治疗48h后,吸入氧体积分数由(0.72±0.17)降至(0.37±0.17),差异有统计学意义(H=17.820,P<0.05);氧合指数(OI)由(11.94±4.50)降至(2.73±2.24),差异有统计学意义(F=9.662,P<0.05);振荡压力幅度由(31.67±5.92)cmH2O逐渐降至(22.00±5.66)cmH2O,差异有统计学意义(F=3.954,P<0.05);平均气道压由(10.44±1.88)cmH2O降至(8.75±1.39)cmH2O,但差异无统计学意义(F=1.030,P>0.05)。治疗过程中,患儿的心率、血压无明显变化。结论 HFOV治疗新生儿呼吸衰竭安全有效。     

不同剂量姜黄素预先给药对全脑缺血再灌注大鼠海马p-CREB和PGC-1α表达的影响

目的 探讨不同剂量姜黄素预先给药对全脑缺血再灌注大鼠海马p-CREB和PGC-1α表达的影响.方法 雄性SD大鼠30o只,体重200～250 g,随机分为5组(n=60):假手术组(S组)仅分离双侧颈总动脉但不阻断;全脑缺血再灌注组(IR组)采用四血管阻断法全脑缺血15 min再灌注的方法制备模型;低、中、高剂量姜黄素组(LC组、MC组和HC组)分别于缺血前1 h腹腔注射姜黄素30、100、300 mg/kg,S组和IR组腹腔注射等容积生理盐水.于再灌注2、6、24、72 h、7 d时各组随机取12只大鼠,分离海马,TUNEL法计数凋亡神经元,Western b1ot法检测海马p-CREB、PGC-1α蛋白的表达.结果 与S组比较,其余4组海马凋亡神经元数目增加,p-CREB、PGC-1α蛋白表达上调(P＜0.05);与IR组比较,LC组和MC组凋亡神经元数目减少,LC组、MC组和HC组p-CREB、PGC-1α蛋白表达上调(P＜0.05);与MC组比较,LC组和HC组凋亡神经元数目增加,p-CREB、PGC-1α蛋白表达下调(P＜0.05).结论 姜黄素可通过上调p-CREB和PGC-1α的表达抑制海马神经元凋亡,从而减轻大鼠全脑缺血再灌注损伤.     

The therapeutic effect of Balanophora polysaccharide on acetic acid gastric ulcer in rats and its mechanism; [蛇 ? 多糖对大鼠乙酸型胃溃疡的治疗作用 ? 机制]北大核心CSCD

Aim To study the therapeutic effect of Balanophora polysaccharide(BPS)on gastric ulcer(GU)induced by acetic acid in rats and to investigateits mechanisms. Methods Sixty male SD rats were randomly divided into sham-operated group, GU model group, omeprazole positive group(3.6 mg·kg-1), and low, medium and high dose of BPS treatment groups(100, 200 and 400 mg·kg-1). The GU model group was prepared by acetic acid cautery method, and the morphology and pathological changes of ulcers were observed by visual observation combined with HE staining, and the ulcer area and inhibition rate were measured and calculated; superoxide dismutase(SOD)activity, malondialdehyde(MDA)content and glutathione peroxidase(GSH-PX)activity were measured by enzymatic assay; tumor necrosis factor-α(TNF-α)and interleukin-6(IL-6)content were detected by ELISA. The expression levels of epidermal growth factor(EGF)and epidermal growth factor receptor(EGFR)were measured by immunohistochemistry staining and Western blot. Results Compared with the sham-operated group, obvious ulcer damage was seen in the model group. Compared with the model group, the BPS-treated group showed a significant reduction in ulcer area, an increase in SOD and GSH-PX activity and EGF and EGFR expression levels, and a significant decrease in MDA, TNF-α and IL-6 content. Conclusions BPS has a therapeutic effect on GU in rats, and its mechanism may be related to the inhibition of oxidative stress, suppression of inflammatory stimuli and promotion of regenerative repair of gastric mucosa. © 2023 Publication Centre of Anhui Medical University. All rights reserved.     

LncRNA MINCR靶向miR-223抑制LPS诱导的人肺泡上皮细胞系A549损伤和炎性反应

目的 探讨长链非编码RNA(lncRNA)MINCR靶向调节微小RNA(miR)-223对脂多糖(LPS)诱导的肺泡上皮细胞系损伤和炎性反应的影响。方法 将人肺泡上皮细胞系A549随机分为对照组、LPS组、LPS+转染组(Si NC组、Si MINCR组、miR-223 NC组、miR-223 mimic组、Si NC+miR-223 NC组、Si NC+miR-223 antagomir组、Si MINCR+miR-223 NC组、Si MINCR+miR-223 antagomir组)。RT-qPCR检测MINCR、miR-223表达水平；流式细胞仪检测细胞凋亡率；ELISA测定血清中肿瘤坏死因子-α(TNF-α)、白细胞介素-6(IL-6)水平；生物信息学预测和双荧光素酶报告基因验证MINCR与miR-223的靶向关系；Western blot检测细胞中活化的半胱天冬氨酸蛋白酶-3(cleaved caspase-3)、B细胞淋巴瘤-2(Bcl-2)蛋白表达水平。结果 MINCR和miR-223存在靶向关系。LPS组与对照组比较，细胞凋亡率、TNF-α、IL-6水平、MINCR、...