口虾蛄乙酸乙酯提取物联合阿霉素或顺铂对人肝癌HepG2细胞的增殖抑制效应研究

目的研究海洋生物口虾蛄乙酸乙酯提取物联合阿霉素或顺铂对人肝癌 HepG2细胞株的增殖抑制效应,并定量分析其协同、相加或拮抗的作用。
　　方法不同浓度的口虾蛄乙酸乙酯提取物联合阿霉素或顺铂处理肝癌 HepG2细胞株24 h,用 MTT 法测定细胞的生长抑制作用,并用中效原理法、金氏修正公式分析药物的联合作用。
　　结果口虾蛄乙酸乙酯提取物、阿霉素、顺铂单用或联合用药作用于肝癌 HepG2细胞株,均能抑制细胞的增殖,呈现量-效依赖性。口虾蛄乙酸乙酯提取物与传统化疗药物的联合用药增加了传统化疗药物对肝癌细胞的毒性作用,呈现出低浓度拮抗,而高浓度协同的作用。
　　结论海洋生物口虾蛄乙酸乙酯提取物作为一类新型、天然的抗肿瘤药物,可有效地抑制肝癌 HepG2细胞的增殖。     

RG-14260与雷帕霉素联合给药对两株子宫内膜癌细胞的作用

目的观察体外EGFR信号通路抑制剂RG-14260单独及RG-14260联合mTOR信号通路抑制剂雷帕霉素对两株子宫内膜癌细胞(PTEN缺失的Ishikawa细胞和PTEN表达完整的HEC-1A细胞)增殖、凋亡、细胞周期及信号通路的影响。方法 MTT法检测抑制剂对细胞增殖的影响,金氏公式评价两抑制剂的协同效果;流式细胞仪检测细胞凋亡及周期分布;Western印迹检测细胞信号蛋白的表达。结果 RG-14260与雷帕霉素可抑制Ishikawa细胞增殖、诱导细胞凋亡、减少S期细胞数量、降低pAKT含量,二者联合应用呈协同效应;RG-14260与Rapamycin对HEC-1A细胞上述作用不明显。结论 PTEN基因缺失使相应信号通路抑制剂作用的子宫内膜癌细胞增殖明显受抑,细胞阻滞于G1期,细胞凋亡增加,对相关信号通路抑制剂的敏感性增加。     

β-内酰胺类联合氟喹诺酮类抗菌药物治疗铜绿假单胞菌感染机制研究进展

铜绿假单胞菌是一种革兰阴性菌,是医院感染的主要致病菌之一,具有致病力强、病死率高等特点。由于近年来抗菌药物的广泛使用,致使铜绿假单胞菌临床耐药率大幅度增长,多重耐药铜绿假单胞菌所造成的感染已成为临床治疗的热点和难点。本文对β-内酰胺类联合氟喹诺酮类抗菌药物治疗铜绿假单胞菌感染的机制进行综述。     

重组人促红细胞生成素联合铁剂治疗围手术期贫血

重组人促红细胞生成素（促红素）与铁剂联合治疗方案的长期应用已被证实对肾性或肿瘤相关性贫血具有良好疗效。然而,对于围手术期贫血的短期治疗,联合应用的证据尚不充分。相比于促红素单药治疗,联合治疗从不同角度升高血红蛋白,从而叠加贫血治疗效果,缩短疗程,提高治疗效率。我们开展了一项回顾性病例对照研究,纳入95例骨科围手术期轻度贫血(血红蛋白≥90 g/L)患者,结果发现联用组术后血红蛋白水平显著高于促红素组,而术后输血风险约为促红素组的25%,提示对于围手术期轻度贫血患者,联合治疗可能优于促红素单药治疗。     

Inactivated influenza virions are a flexible vaccine platform for eliciting protective antibody responses against neuraminidase

Most seasonal influenza vaccines are produced using hemagglutinin (HA) surface antigens from inactivated virions. However, virions are thought to be a suboptimal source for the less abundant neuraminidase (NA) surface antigen, which is also protective against severe disease. Here, we demonstrate that inactivated influenza virions are compatible with two modern approaches for improving protective antibody responses against NA. Using a DBA/2J mouse model, we show that the strong infection-induced NA inhibitory (NAI) antibody responses are only achieved by high dose immunizations of inactivated virions, likely due to the low viral NA content. Based on this observation, we first produced virions with higher NA content by using reverse genetics to exchange the viral internal gene segments. Single immunizations with these inactivated virions showed enhanced NAI antibody responses and improved NA-based protection from a lethal viral challenge while also allowing for the development of natural immunity to the heterotypic challenge virus HA. Second, we combined inactivated virions with recombinant NA protein antigens. These combination vaccines increased NA-based protection following viral challenge and elicited stronger antibody responses against NA than either component alone, especially when the NAs possessed similar antigenicity. Together, these results indicate that inactivated virions are a flexible platform that can be easily combined with protein-based vaccines to improve protective antibody responses against influenza antigens.     

Combination therapy of hydrogel and stem cells for diabetic wound healing

Diabetic wounds (DWs) are a common complication of diabetes mellitus; DWs have a low cure rate and likely recurrence, thus affecting the quality of patients’ lives. As traditional therapy cannot effectively improve DW closure, DW has become a severe clinical medical problem worldwide. Unlike routine wound healing, DW is difficult to heal because of its chronically arrested inflammatory phase. Although mesenchymal stem cells and their secreted cytokines can alleviate oxidative stress and stimulate angiogenesis in wounds, thereby promoting wound healing, the biological activity of mesenchymal stem cells is compromised by direct injection, which hinders their therapeutic effect. Hydro-gels form a three-dimensional network that mimics the extracellular matrix, which can provide shelter for stem cells in the inflammatory microenvironment with reactive oxygen species in DW, and maintains the survival and viability of stem cells. This review summarizes the mechanisms and applications of stem cells and hydrogels in treating DW; additionally, it focuses on the different applications of therapy combining hydrogel and stem cells for DW treatment.     

益气补肾复方联合化疗治疗非小细胞肺癌的临床观察

目的:建立中西医联合治疗非小细胞肺癌患者的优化方案,达到更好的临床疗效,提高病人生活质量,尽量延长其生存周期。方法:按照单中心、随机、平行对照、单盲的方法,把符合纳入标准的患者分为试验组和对照组。试验组:西医常规化疗+协定方,服用益气补肾复方4个月,同时化疗4个疗程;对照组:同试验组相同的化疗方案,不服用中药,连续化疗4个疗程。并在预计时间评价RECIST标准评分、KPS评分来统计分析。结果:按照RECIST标准评价,两组在缩小瘤体疗效方面无统计学差异(P0.05);按KPS评分评价,两组在KPS评分的比较差异无统计学意义(P0.05)。结论:从观察指标的总有效率来讲,中西医结合治疗IIIb-IV期NSCLC的总体疗效相对于单纯的西医化疗,具有一定优势,益气补肾法在治疗中晚期NSCLC中有减毒增效的功效。     

替加环素单药与联合方案治疗多重耐药菌感染疗效对比的系统评价#br#

目的 替加环素是一种广谱的新型四环素类抗生素,长期单独使用可能存在耐药菌出现增多的问题。本文将系统性评价以替加环素为基础的联合治疗方案与替加环素单药方案治疗多重耐药菌感染疗效的对比。方法 通过检索PubMed、Embase、the Cochrane Library、CNKI、维普、万方等数据库及手工检索会议论文,寻找有关替加环素单药和联合治疗方案比较的随机对照研究、队列研究、病例丛和个案报道。检索日期截止到2016年12月31日。英文数据库的检索词为“tigecycline”、“tygacil”、“monotherapy”以及“combination”。中文数据库的检索词为“替加环素”、“单药”及“联合”。相关综述研究也一并手工检索。结果 仅1篇符合筛选条件的相关RCT研究。最终纳入9项对比研究(含1510个事件)和22项非对比性研究(含26个事件)。对比研究显示基于替加环素的联合治疗方案与替加环素单药治疗方案相比疗效上无显著差异。然而26例个案报道中23例显示替加环素联合的治疗方案临床效果会更佳。此外,研究还显示,与替加环素组合的治疗方案中最常见的抗菌药物是多黏菌素、碳青霉烯类、氨基糖苷类和氟喹诺酮类。结论 替加环素为基础的联合方案似乎更优于单药方案,常见有效的联合药物为多黏菌素、碳青霉烯类、氨基糖苷类和氟喹诺酮类。未来需要进行更多的前瞻性、随机对照、双盲研究来探索联合治疗方案和单药治疗方案疗效对比以及何种药物与替加环素的联合会更适宜。     

社区卫生服务中心对当前医养结合服务现状的满意性评价*

目的以社区卫生服务中心的视角,对上海市浦东新区社区卫生服务中心开展医养结合服务的现状进行评价。方法通过书面访谈法获知256位社区卫生服务中心医务人员对当前医养结合服务现状的评价,记录并分析其"满意"和"不满意"之处。结果实施机制、人力资源和政策规范满意,经费待遇、政策规范、考核管理、工作强度和医患关系不满意。结论基于社区卫生服务中心的医养结合服务总体机制较为明确,具体实施细则、队伍建设和医患关系处理等方面尚需完善。     

A randomized,open label trial to evaluate and compare the immunogenicity and safety of a novel liquid hexavalent DTwP-Hib/Hep B-IPV (EasySix™) to licensed combination vaccines in healthy infants

Immunogenicity and safety of a newly developed liquid DTwP-Hib/HepB-IPV hexavalent vaccine (EasySix™) was evaluated and compared with administration of commercially licensed Pentavac SD® (DTwP-HepB/Hib) and Imovax Polio® vaccine in an open-label, randomized multi-centric trial. 284 participants, aged 6–10 weeks, randomized in a 1:1 allocation, received three doses of test or comparator vaccines, administered 4 weeks apart. Immunogenicity of the vaccines was determined by measuring the baseline and post-vaccination antibody responses and comparing the proportions of subjects achieving seroprotection against the vaccine antigens; safety was evaluated in terms of solicited (local and systemic) and unsolicited incidences in the follow up phase. Post-vaccination, seroprotection was achieved against all six vaccine antigens in both vaccine groups. The seroresponse rate as well as geometric mean titers of antibody for all vaccine components were comparable between EasySix™ and Pentavac SD®-Imovax Polio® group. Both vaccines had similar reactogenicity profiles and were well tolerated; all adverse events resolved completely without any sequelae. Only one serious adverse event was reported that completely resolved; it was regarded unconnected to the vaccine administered. This study demonstrated that immunogenicity and safety profiles of EasySix™ vaccine, manufactured by Panacea Biotec Ltd, are non-inferior to the commercially available vaccines.Clinical trial registration: CTRI/2015/02/005578.