广西血竭化学成分的研究

目的对广西血竭Dracaena cochinchinensis脂溶性成分进行研究。方法采用硅胶柱层色谱，制备TLC，重结晶进行分离纯化，运用现代波谱技术鉴定化合物的结构。结果从广西血竭中分离并鉴定了6个脂溶性化合物，分别为：1，2，4，5-四氯-3，6-二甲氧基苯(I)、胆甾-4α-甲基-7-烯-3β醇(Ⅱ)、胆甾-4α-甲基-7-烯-3-酮(Ⅲ)、正二十六烷(Ⅳ)、胆甾-7-烯-3β醇(V)、胆甾-7-烯-3-酮(Ⅵ)。结论化合物Ⅳ～Ⅵ为首次从该植物中得到。     

甘油三酯对血管内皮细胞GRK2表达时序性的研究

[目的]探讨甘油三酯对血管内皮细胞G蛋白偶联受体激酶2(GRK2)时序性表达的影响.[方法]体外培养人血管内皮细胞(EAhy926),在培养基中加入终浓度为150mg/L的甘油三酯进行时间效应实验,于0、3、6、12、24、36h收集细胞后立即进行蛋白抽提,用Westernblot检测甘油三酯作用后血管内皮细胞GRK2的改变.[结果]0、3、6、12、24和36h组GRK2/Actin灰度比值分别为0.31±0.02、0.41±0.02、0.49±0.03、0.54±0.04、0.61±0.11、0.59±0.05.随着甘油三酯作用时间延长,GRK2含量呈时间依赖性增加,24h达到高峰.[结论]甘油三酯可能通过上调血管内皮细胞的GRK2,导致内皮细胞功能障碍,从而参与了动脉粥样硬化的发生发展进程.     

Carbon blacks as EPR sensors for localized measurements of tissue oxygenation.

New electron paramagnetic resonance (EPR) oximetry probes were identified in the class of carbon black materials. These compounds exhibit very high oxygen sensitivity and favorable EPR characteristics for biological applications. At low pO(2), the linewidth is particularly sensitive to changes in oxygen tension (sensitivity of 750 mG/mmHg). The application of the probes for oximetry was demonstrated in vivo: the pO(2) was measured in muscle in which the blood flow was temporarily restricted as well as in tumor-bearing mice during a carbogen breathing challenge. The responsiveness to pO(2) was stable in muscle for at least 3 months. No toxicity was observed using these materials in cellular experiments and in histological studies performed 2, 7, and 28 days after implantation. In view of their EPR characteristics (high sensitivity) as well as the well-characterized production procedure that make them available on a large scale, these probes can be considered as very promising tools for future developments in EPR oximetry.     

精神分裂症子女的行为问题及相关因素分析

目的 探讨精神分裂症子女的行为问题及相关因素。方法 以Achenbach儿童行为量表(CBCL)为工具，对260名精神分裂症患者的子女(研究组)行为问题及其影响因素进行调查，并与正常健康者的子女(对照组)进行对照。结果 精神分裂症子女行为问题检出率为31．2％。显著高于对照组的12．3％；其主要影响因素为儿童健康状况差、孕产期不利因素、家庭教育方式不当、亲子关系差、居住地社会风气差和学习成绩差。结论 精神分裂症子女的行为问题发生率较高，为生物、心理及社会因素共同作用的结果，并需全面干预。     

归脾汤治疗眩晕21例观察

中医认为眩晕是头晕与眼花总称，临床上常同时并见。轻闭目即止；重如坐舟车，旋转不定，不能站立，或伴有恶心，呕吐，出汗，甚则昏倒等症状。笔选用归脾汤治疗辨证属心脾两虚，气血不足之眩晕21例，疗效较好，现简介如下。     

Effect of Ligustrazine on Bone Marrow Microenvironment and Signal Transducti on Path in Irradiation Injured Mice

Ｗｅｈａｖｅｒｅｐｏｒｔｅｄ ｐｒｅｖｉｏｕｓｌｙｔｈａｔｌｉｇｕｓｔｒａｚｉｎｅｃｏｕｌｄｐｒｏｍｏｔｅｈｅｍａｔｏｐｏｉｅｓｉｓｔｈｒｏｕｇｈｉｍｐｒｏｖｉｎｇｂｏｎｅｍａｒｒｏｗｍｉｃｒｏｅｎｖｉｒｏｎｍｅｎｔａｎｄｅｎｈａｎｃｉｎｇａｄｈｅｓｉｖｅ     

肌萎缩侧索硬化合并颈椎病的临床特点分析

目的:探讨肌萎缩侧索硬化ALS合并颈椎病患者的临床特征。方法:对75例ALS患者的临床资料进行回顾性分析,并对合并颈椎病的ALS患者与未合并颈椎病的ALS患者的临床特点进行比较。结果:合并颈椎病的ALS患者与未合并颈椎病的ALS患者的发病年龄、性别比例与临床特点差异均无统计学意义。结论:ALS可以并合颈椎病,颈椎病对ALS的发病年龄、临床特点无明显影响。     

The effect of skin surface warming during anesthesia preparation on preventing redistribution hypothermia in the early operative period of off-pump coronary artery bypass surgery.

OBJECTIVE: Redistribution hypothermia adversely affects hemodynamics and postoperative recovery in patients undergoing cardiac surgery. In off-pump coronary bypass surgery (OPCAB), maintaining the temperature is important because warming by cardiopulmonary bypass is omitted. Pre-warming studies reported earlier showing pre-warming as an effective means of preventing redistribution hypothermia was time consuming since it required at least 1-2h to pre-warm the patients before the surgery. Because pre-warming for such a long time is impractical in clinical practice, this study evaluated the efficacy of active warming during the preanesthetic period for the prevention of redistribution hypothermia in the early operative period of OPCAB. METHODS: After gaining the approval of Institutional Review Board and informed consent from the patients, 40 patients undergoing OPCAB were divided into control and pre-warming groups. The patients in control group (n=20) were managed with warm mattresses and cotton blankets, whereas patients in pre-warming group (n=20) were actively warmed with a forced-air warming device before the induction of anesthesia. Hemodynamic variables and temperature were recorded before anesthesia (Tpre) and at 30 min intervals after anesthesia for 90 min (T30, T60, and T90). RESULTS: Active warming duration was 49.7+/-9.9 min. There were no statistically significant differences in skin temperature, core temperature and hemodynamic variables between the two groups at preinduction period except for mean arterial pressure and central venous pressure. The core temperature at T30, T60, and T90 was statistically higher in pre-warming group than that in control group. Core temperature of six (30%) and seven patients (35%) in control group was reduced below 35 degrees C at T60 and T90, respectively, whereas core temperature of only one patient (5%) in pre-warming group was reduced below 35 degrees C at T90 (P=0.02). CONCLUSIONS: Active warming using forced air blanket before the induction of anesthesia reduced the incidence and degree of redistribution hypothermia in patients undergoing OPCAB. It is a simple method with reasonable cost, which does not delay the induction of anesthesia nor the surgery.     

The role of endotoxin in the pathogenesis of experimental multiple system organ failure: a preliminary report.

In this study, an animal model of multiple system organ failure (MSOF) in rabbits, engendered by feeding E. coli prior to severe hemorrhagic shock, was used for the purpose of investigating 1) the relationship between lipopolysaccharide (LPS) and MSOF, and 2) the effectiveness of Re-LPS antiserum in preventing MSOF. The results showed that endotoxemia occurred very early, and its degree correlated well with that of organ dysfunction. Re-LPS antiserum administration abated the toxic effects and lowered the incidence of MSOF. These results suggest that sequential analysis of circulating LPS levels may be useful for the early diagnosis of MSOF, and that gut-derived endotoxin might play an important role in the pathogenesis of experimental MSOF.