左金丸抗幽门螺杆菌感染的分子网络调控机制研究

目的基于网络药理学和生物信息学方法探究左金丸抗幽门螺杆菌(Hp)感染的分子网络调控机制。方法通过中药系统药理学数据库和分析平台(TCMSP)检索左金丸化学成分,筛选并预测其入血活性成分和作用靶点,检索疾病数据库中与Hp感染相关的作用靶点,构建左金丸成分靶点与疾病靶点的交互网络,获得左金丸抗Hp的特征性基因;通过DAVID6.8数据库对上述特征性基因进行GO功能富集和KEGG通路富集分析;利用Cytohubba筛选出左金丸抗Hp感染的关键靶点。结果通过TCMSP筛选、预测得到左金丸32个入血活性成分和197个作用靶点。GO分析共得到199条富集结果,其中生物过程包含炎症反应、RNA信号转录、信号传导等152条,细胞组分包含细胞核、细胞外基质、蛋白复合物等19条,分子功能包含细胞因子活性、DNA结合、ATP结合等28条。KEGG分析结果显示,Jak-STAT信号通路、T细胞受体信号通路、细胞周期信号通路、Wnt信号通路等65条通路与左金丸抗Hp感染密切相关。经Cytohubba筛选得到CXCL8、IL10、IL4、VEGFA、MMP9等10个关键基因。结论左金丸抗Hp感染具有多成分、多靶点、多通路协同作用的特点,可为其活性成分研究和抗Hp药效及机制研究提供依据。     

宫颈癌顺铂耐药研究进展

顺铂（DDP）作为第一个被发现的金属抗癌药物，是目前最有潜力和应用最广泛的抗肿瘤药物。顺铂在宫颈癌的治疗中尤为重要，目前已被推荐为同步放化疗的首选药物。但随着广泛的使用，顺铂的耐药性逐渐显露出来，并成为限制临床疗效和部分患者肿瘤治疗进展的主要原因之一。顺铂的耐药机制复杂，发生环节较多，但具体耐药机制尚不明确，目前按照顺铂耐药发生的环节可分为:①顺铂在血液循环过程中产生耐药；②顺铂通过细胞膜的流入或流出产生耐药；③顺铂在胞质中产生耐药；④顺铂与DNA结合后产生耐药。本文综述了宫颈癌顺铂耐药可能发生的四个环节及克服耐药常用的手段，为提高顺铂对宫颈癌的疗效提供依据。     

基于子宫内膜异位症与恶性肿瘤的相关性探析补肾化瘀法作用机制及中医理论依据

子宫内膜异位症其异位内膜组织虽然在形态学上呈良性表现，却具有类似恶性肿瘤的生物学特性。中医学一般认为，“正虚伏邪”为恶性肿瘤的病机特点；那么，肾虚血瘀既属于“正虚伏邪”的范畴，又体现了EMs发病学和疾病发生、发展过程中的主要特点。在“病证相应”的中医治则之下，补肾化瘀法的临床疗效主要表现为：缓解痛经症状、提高受孕率，以及调整月经周期。本文基于EMs与恶性肿瘤的相关性，通过分析补肾化瘀法治疗EMs的理论依据及其抑制异位内膜侵袭的调控机制，主要包括解除免疫抑制、阻断局部微血管新生等，旨在阐明其疗效显著的原因，为临床推广提供可靠的基础研究证据。     

内听动脉闭塞综合征的临床与发病机理

目的：探讨内听动脉闭塞综合征的临床与发病机理。方法：分析24例患者年龄、性别及所伴发疾病如高血压病、糖尿病、冠心痛及椎-基底动脉供血不足等。结果：50岁以上，有高血压病、冠心病、糖尿病、椎-基底动脉供血不足者内听动脉闭塞发病明显增加。结论：高血压病、冠心病、糖尿病、椎基底动脉供血不足是内听动脉闭塞综合征的主要危险因素。     

前后挤压型骶骨Ⅱ区骨折与骶丛神经损伤的关系

目的 探讨前后挤压致骶骨Ⅱ区骨折造成骶丛神经损伤的机制。方法 经甲醛短期（1年内）浸泡固定的国人尸体6具，12侧。解剖保护骶丛神经，制成前后挤压型暴力致骶Ⅱ区骨折模型，定量测量不同骨折移位时骶丛神经被拉长的距离。另外，利用X线片观察骶从神经受压情况。结果 随耻骨联合分离逐渐增大，骶丛神经张应变呈直线相关逐渐加大，以S1，S4为最显著，且可造成神经的刺伤，多见于L5和S1，X线未发现骶丛神经受压表现。结论 前后挤压型暴力致骶骨Ⅱ区骨折神经损伤以牵拉伤为丰，以S1，S4为主，且与骨折移位程度成正相关关系。神经的刺伤，多见于骨折移位较大的L5和S1。     

腹腔镜和开腹结直肠手术的炎性反应比较

目的对比分析腹腔镜和开腹结直肠手术患者全身和腹腔炎性反应的差异,为腹腔镜手术对结直肠肿瘤中的应用提供理论依据。方法对51例2004年4-8月间收治的乙状结肠和直肠恶性肿瘤患者,采用腹腔镜辅助手术25例(LAP组),开腹手术26例(OPEN组)。术毕骶前留置引流管。观察并比较两组患者的一般情况和炎性反应及与手术相关的各项指标。结果两组患者在年龄、性别、ASA分级、术前血红蛋白及白蛋白水平、肿瘤Dukes分期和手术方式差异均无统计学意义(P＞0．05)。在切口长度、手术时间、肠道功能恢复时间、住院时间的比较中,LAP组占有明显优势(P＜0．05)。腹腔引流量在术后第1天,两组间差异无统计学意义(P＞0．05)；而术后2-4 d,LAP组明显低于OPEN组(P＜0．05)。LAP组术后第1天,周围血中性粒细胞[(7．30±2．62)×10~9/L]、白介素(IL)-10[(19．46±3．31)pg/ml]和C反应蛋白(CRP)[(2．76±2．17)mg/dl]水平均显著低于OPEN组(P＜0．05)。术后第4天两组间差异无统计学意义(P＞0．05)。术后第1天,两组腹腔引流液的IL-10、肿瘤坏死因子(TNF)及CRP水平差异无统计学意义(P＞0．05),术后第4天LAP组IL-10 [(22．53±15．47)pg/ml]明显低于OPEN组(P＜0．05)。结论术后早期,腹腔镜结直肠手术的腹腔炎性反应与开腹手术相当,而全身炎性反应较开腹手术轻。腹腔镜结直肠手术临床上体现出恢复快、并发症少、住院天数少的优势。     

Incidence and Prognosis of Organ Failure in Severely Injured Children and Adult Patients

Abstract Background: Does there exist a difference in the outcome of severely injured children and severely injured healthy adults? Methods: The data of 1,566 severely injured patients, treated between May 1998 and December 2002 in our emergency department of the University Essen/Germany, were analyzed. Patients with an injury severity score (ISS) > 24 were included in the present study. Patients younger as 18 (17) years were located to the children group c. Patients aged 18 and up to the age of 54 were included in the adult group a. Results: Fifty-four children and 252 adults met the selection criteria. ISS and the Glasgow coma scale (GCS) before intubation were not statistically different in both groups. Seriously injured children stayed significantly shorter on the intensive care unit, required significantly less ventilator days. Furthermore, the incidence of single organ failure (SOF) and multiple organ failure (MOF) was significantly lower in the children group. Mortality in the children group (29.6%) was lower than that in the adult group (33.7%). There was no death due to MOF in the children group as compared to 2.4% (n = 6) in the adults. Conclusion: The incidence of SOF and MOF was significantly lower in the children group although there was no difference in ISS, GCS and injury patterns. The prognosis of severely injured children was found to be better than those of adults. Moreover, there was no death due to MOF in the children group.     

乙酰半胱氨酸对脓毒症大鼠炎症介质的影响及对肝脏的保护作用

目的探讨乙酰半胱氨酸(NAC)对脓毒症大鼠肝脏损伤的保护作用。方法90只Wistar大鼠随机分为3组,每组30只。即假手术组(A组),脓毒症模型组(B组),NAC治疗组(C组)。A组除不结扎盲肠,不刺穿盲肠外,余操作同B组；B组成功后不做任何处理；C组NAC治疗组,盲肠结扎穿孔后大鼠立即经尾静脉给予NAC 150 mg/kg体重。各组大鼠在术后6、12、24 h分次处死,每次10只,取下腔静脉血检测血清中炎性细胞因子水平,并取肝组织行病理检查。结果血清ALT、AST水平B组、C组二组12 h后明显上升,ALT水平在12 h以后B组显著高于C组[(132．80±12．36)U/L比(87．40±10．22)U/L；(284．60±26．47)U/L比(156．60±13．56)U/L],AST水平24 h B组显著高于C组[(308．60±30．42)U/L比(175．60±17．67)U/L]；B组大鼠血中炎性细胞介质水平显著升高,肿瘤坏死因子(TNF)-α为165．41±20．14,325．36±42．20,578．40±61．70；白细胞介素(IL)-1β为(128．24±17．21),(298．24±32．02),(302．36±46．26)肝功能与形态出现损伤性变化；C组血中炎性介质水平明显降低,TNF-α为(142．25±18．72)、(232．32±30．24)、(342．20±44．55)ng/L；IL-1β(96．41±16．3)、(164．30±26．18)、(201．47±40．56)ng/L肝功能与形态损伤减轻。结论NAC对大鼠脓毒症有治疗作用,其机制可能是通过减少机体炎症介质的释放引起。     

狂犬病病毒致病机制研究概况

狂犬病病毒（RV）是一种高度嗜神经性病毒，由RV引发的狂犬病通常是一种急性致死性神经系统损伤性疾病。RV通过周围神经末梢和中枢神经系统（CNS）的神经元进行病毒的复制和传播。绝大多数狂犬病例CNS病理学表现为急性脑脊髓炎，常常没有显著的显微镜下改变，脑部可以轻度肿胀，脑膜和脑实质血管轻度充血并伴有少量炎症细胞浸润，这也是其他急性病毒性脑炎常见的共同表现。     

Pedophilia is linked to reduced activation in hypothalamus and lateral prefrontal cortex during visual erotic stimulation.

BACKGROUND: Although pedophilia is of high public concern, little is known about underlying neural mechanisms. Although pedophilic patients are sexually attracted to prepubescent children, they show no sexual interest toward adults. This study aimed to investigate the neural correlates of deficits of sexual and emotional arousal in pedophiles. METHODS: Thirteen pedophilic patients and 14 healthy control subjects were tested for differential neural activity during visual stimulation with emotional and erotic pictures with functional magnetic resonance imaging. RESULTS: Regions showing differential activations during the erotic condition comprised the hypothalamus, the periaqueductal gray, and dorsolateral prefrontal cortex, the latter correlating with a clinical measure. Alterations of emotional processing concerned the amygdala-hippocampus and dorsomedial prefrontal cortex. CONCLUSIONS: Hypothesized regions relevant for processing of erotic stimuli in healthy individuals showed reduced activations during visual erotic stimulation in pedophilic patients. This suggests an impaired recruitment of key structures that might contribute to an altered sexual interest of these patients toward adults.