Changes in Plasma Angiotensin Ⅱ and Circadian Rhythm of Blood Pressure in Hypertensive Patients with Sleep Apnea Syndrome Before and After Treatment

Objective To explore the changes in plasma angiotensin II (Ang II) and circadian rhythm of blood pressure among hypertensive patients with sleep apnea syndrome (SAS) before and after continuous positive airway pressure (CPAP) or surgical treatment.Methods A total of 180 essential hypertension patients were enrolled in our study.The determination of plasma Ang II concentration,ambulatory blood pressure (ABP),and polysomnography (PSG) monitoring were performed before and 3 months after CPAP or surgical treatment.Results Patients were classified into three groups by their apnea-hypopnea index (AHI):essential hypertension group (EH group,n=72;AHI<5),essential hypertension with mild SAS group (EH+mild SAS group,n=60,5≤AHI<20),and essential hypertension with moderate and severe SAS group (EH+moderate-severe SAS group,n=48,AHI≥20).The concentrations of plasma AngⅡ in the above three groups were 13.42±3.27,16.17±3.82,and 18.73±4.05 ng/mL respectively before treatment,and AngⅡ concentration in EH patients combined with SAS was significantly higher than that in EH group (all P<0.05).After treatment the values in the latter two groups significantly decreased to 14.67±2.56 and 15.03±3.41 ng/mL respectively (P<0.05).The incidence of non-dipper blood pressure curve in EH patients was 31.9%,and those in hypertensive patients with mild SAS and moderate-severe SAS were 51.7% and 58.3%,respectively before treatment.The incidence of non-dipper blood pressure curve in the EH patients with mild SAS was significantly higher than that of patients with EH alone (P<0.05).After CPAP treatment or surgery,the incidence of non-dipper blood pressure curve in the two SAS groups was significantly decreased to 38.3% and 39.6%,respectively (P<0.05).Conclusions Ang II might play a role in blood pressure variability in patients with obstructive SAS.CPAP or surgical treatment can improve blood pressure disorder and decrease plasma Ang II level in patients with obstructive SAS.     

Evaluation of von Willebrand factor-cleaving protease activity in patients with thrombotic thrombocytopenic purpura

Background Thrombotic thrombocytopenic purpura (TTP) is a rare thrombotic microangiopathy. In this study we investigated the von Willebrand factor-cleaving protease (vWF-cp) activity deficiency in patients with TTP.Methods The plasma or serum vWF-cp activity was measured using a sensitive enzyme-linked immunosorbent assay (ELISA) by detecting the residual collagen binding activity (R-CBA) of von Willebrand factor (vWF) before and after digestion by vWF-cp. Multimers of vWF in plasma of patients with TTP were also analyzed by SDS-agarose electrophoresis. Moreover, the serum vWF-cp activities were compared between the patients with TTP and those with tumors.Results The coefficient of variation for intra-batch and inter-batch of the assay were 3.60％ and 8.35％. The plasma and serum vWF-cp activity in healthy individuals were (78.79±9.17)% (n=30) and (79.47±10.78)% (n=53), respectively, while the plasma vWF-cp activity in 5 patients with TTP was markedly decreased ［(21.83±19.98)%, P&lt;0.001］. The unusually large vWF multimers were observed in two plasma samples of the patients with TTP. Although the vWF-cp activities in patients with benign and malignant tumors were also decreased (P&lt;0.03 and P&lt;0.001, respectively), they were relatively high in comparison with that of TTP patients (P&lt;0.001).Conclusion Measurement of the vWF-cp activity using R-CBA is a simple and rapid method for diagnosing TTP. The vWF-cp activity in patients with TTP was markedly lower than those of patients with tumors.     

Clinical Observation on Influence of Chinese Medicines for Promoting Blood Circulation to Remove Blood Stasis on FIB and DD in Plasma of Patients with Cerebral Thrombosis

to study the influence of Chinese medicines for promoting blood circulation to removeblood stasis on fibrinogen(FIB)and D-dimer(DD)in plasma of patients with cerebral thrombosis.Method:73 inpatients with acute cerebral thrombosis were randomly divided into a control group of34 cases and a treatment group of 39 cases.The content of FIB and DD in plasma was detectedbefore treatment and on the 7th and 14th days after treatment.Result:FIB content in plasma aftertreatment was lower than that before treatment in the control group(P<0.01)and more remarkablein the treatment group(P<0.001).There was an obvious difference in DD content before and aftertreatment in both groups.DD content on the 7th and 14th days after treatment in the treatmentgroup was obviously higher than that in the control group(P<0.01 and P<0.05 respectively).Conclusion:Chinese medicines for promoting blood circulation to remove blood stasis can reducethe FIB content in plasma of patients with cerebral thrombosis,raise the DD content in plasma,cause the peak of DD content appear earlier and obviously improve hypercoagulability of blood inpatients with cerebral thrombosis.     

Effect of Shexiang Tongxin Dropping Pills(麝香通心滴丸) on the Immediate Blood Flow of Patients with Coronary Slow Flow

Objective: To observe the immediate effect and safety of Shexiang Tongxin dropping pills(麝香通心滴丸, STDP) on patients with coronary slow flow(CSF), and furthermore, to explore new evidence for the use of Chinese medicine in treating ischemic chest pain. Methods: Coronary angiography(CAG) with corrected thrombolysis in myocardial infarction(TIMI) frame count(CTFC) was applied(collected at 30 frames/s). The treatment group included 22 CSF patients, while the control group included 22 individuals with normal coronary?ow. CSF patients were given 4 STDP through sublingual administration, and CAG was performed 5 min after the medication. The immediate blood ?ow frame count, blood pressure, and heart rate of patients before and after the use of STDP were compared. The liver and kidney functions of patients were examined before and after treatments. Results: There was a signi?cant difference in CTFC between groups(P0.05). The average CTFC values of the vessels with slow blood ?ow in CSF patients were, respectively, 49.98±10.01 and 40.42±11.33 before and after the treatment with STDP, a 19.13% improvement. The CTFC values(frame/s) measured before and after treatment at the left anterior descending coronary artery, left circumflex artery, and right coronary artery were, respectively, 48.00±13.32 and 41.80±15.38, 59.00±4.69 and 50.00±9.04, and 51.90±8.40 and40.09±10.46, giving 12.92%, 15.25%, and 22.76% improvements, respectively. The CTFC values of vessels with slow ?ow before treatment were signi?cantly decreased after treatment(P0.05). There were no apparent changes in the heart rate, blood pressure, or liver or kidney function of CSF patients after treatment with STDP(all P0.05). Conclusions: The immediate effect of STDP in treating CSF patients was apparent. This medication could signi?cantly improve coronary ?ow without affecting blood pressure or heart rate. Our ?ndings support the potential of Chinese medicine to treat ischemic chest pain.     

CLINICAL STUDY ON EFFECT OF TRIPTERYGIUM WILFORDII HOOK. F. GLYCOSIDES ON UTERINE LEIOMYOMA

Objective To observe the therapeutic effect and side reactions of Tripterygium wilfordii Hook,f. ( GTW) glycosides on patients with uterine leiomyomas. Methods 65 normally cycling women with symptomatic uterine leiomyomas received 40mg daily dose GTW for 3 to 6 months. Baseline ultrasound tests were obtained to evaluate the sizes of myomas and uterus, then repeated three and six months after treatment. Blood samples were collected to determine the hormonal levels of in the mid-follicular and mid-luteal phases of the menstrual cycles before GTW therapy and at 3~4 months and 5~6 months after treatment. Results Significant decrease in leiomy-oma volume was shown in 39 of 65 (60% ) and 28 of 40 ( 70% ) patients after 3~4 months and 5~6 months of treatment, respectively. The decrease of the volume of leiomyoma was time-dependent as while 27. 84% and 51.60% in 3~4 months and 5 ~ 6months, respectively. 25 of 65 patients had amenorrhea during the course of treatment. Tripterygium wilfordii glycosides treatment     

Serum hyaluronan levels in oral cancer patients

Background Hyaluronan （HA） is most likely associated with tumor invasion and metastasis. Studies have shown that HA levels are often increased in serum of patients with various malignant tumors. The purpose of this study was to determine the levels of serum hyaluronan in patients with oral cancer and evaluate the value of serum HA in adjuvant diagnosis, staging and monitoring treatment response in these patients.
Methods Eighty-four hospitalized patients with oral cancer, 65 patients with benign tumors in the oral and maxillofacial region and 67 healthy individuals were included in this investigation. Venous blood was collected from these patients and the healthy individuals before therapy. One week after therapy, venous blood was collected once again in 43 patients with oral cancer. Serum samples were obtained and serum HA levels examined.
Results The serum HA concentration was significantly higher in oral cancer patients than in patients with benign tumors and in healthy controls （P〈0.05）. The serum HA level in patients with stages Ⅲ and Ⅳdisease was higher than in patients with stages Ⅰ and Ⅱ disease, but there was no significant difference in the HA level between stages Ⅰ and Ⅱnor between stages Ⅲand Ⅳ（P〉0.05）. After a complete treatment the HA levels in patients with oral cancer became lower than before treatment, but the difference was not significant （P〉0.05）.
Conclusions The results of this study suggest that the determination of HA levels may provide additional information in diagnosis of oral cancer, but its usefulness as an adjunct in clinical staging and in monitoring treatment response was limited.     

Respiratory tract tumor

930125 Dynamic study on plasma antidiureticChina Medical Abstracts(Internal Medicine) hormone before and after resection of lung can-cers.YANG Jun(杨俊),et al.Nanfang Hosp,Guangzhou.Chin J Oncol 1992;14(5):360-361.Plasma antidiuretic hormone(ADH)was as-sayed before and after resection of lung cancers.The results showed that the plasma ADH in thecontrol group was 11.6±4.8Pg/ml in contrastto higher levels in the lung cancer patients.TheADH level was the highest in patients with     

Effects of Acupuncture at 7-9 am and 3-5 pm on Plasma Thromboxane and Prostaglandin in Patients with Ischemic Cerebrovascular Disease

Objective:To observe the effects of acupuncture at different times on plasma thromboxane(TXB2) and prostaglandin 6-Keto-PGF1a(6-K-P) in patients with ischemic cerebrovascular disease.Methods:Totally 90 patients were randomly divided into a group acupunctured at 7-9 am,a group acupunctured at 3-5 pm and a drug control group,with 30 cases in each group.The contents of plasma TXB2 and 6-K-P from venous blood before treatment were compared with those 15 days after treatment.Results:The plasma TXB2 levels of the...     

TREATMENT OF 23 PATIENTS WITH ADVANCED GASTRIC CANCER BY INTRAVENOUSLY TRANSFER OF AUTOLOGOUS TUMOR-INFILTRATING LYMPHOCYTES COMBINED WITH rIL-2

Tumot-infiltratiug lymphocytes (TIL) isolated from metastatic lymph nodes in patients with nonoperable advanced gastric cancer were induced to become LAK-like cytotoxic activity of TIL after in vitro culture with rlL-2.Twenty-three patients with advanced gastric cancer were tratd by intravenously transfer of autologous TIL combined with rlL-2.The tumor focus disappeared (complete remission,CR) in 3 patients (13.0%) and significantly decreased (partial remission,PR) in 5 patients (21.7%).Fifteen patients did not respond to the treatment.The amount of soluable IL-2 receptor in serum was significantly decreased after treatment,the cytotoxicity of NK cells and OT test were significantly increased.No significant difference in CD4/CD8 was found between before and after treatment.No serious side effect was obseved in the treatment.     

Plasma and Placental Levels of Transforming Growth Factor-3β in Normal and Preeclamptic Pregnancies

Objective To investigate levels of transforming growth factor-3β （TGF-3β） in the plasma and placental of normal or preeclamptic pregnancies. Methods The study population consisted of 36 women with normal pregnancy and 36 women with preeclampsia. Peripheral venous blood samples were collected before labor, and placental tissues were immediately obtained after delivery. TGF-3β levels in maternal plasma and placental homogenate were detected by enzyme-linked immunosorbent assay. Results The mean plasmas level of TGF-313 was significantly higher in preeclamptic patients than that of normal parturient （P〈0.001）; the mean placental level of TGF-3β was also higher in preeclamptic patients than that of normal parturient （P〈0.001）. Conclusion The TGF-3β levels increase in preeclamptic patients, which suggests TGF-3β may play an important role in the pathologic process of preeclampsia.     

孕周与母儿血甲状腺激素含量的关系

目的：观察不同孕周与母儿血甲状腺激素的关系。方法：应用放射免疫分析法对67例中、晚期妊娠要求引产患者，10例早产及78例孕足月自然分娩患者进行了母血及胎儿脐静脉、脐动脉血中TSH、T3、T4的测定。结果：TSH值在母血及胎儿血中随着孕周的增加而增加．T3值在胎儿血中与母血中比较，显示低T3血症，T4值接近正常母体水平。结论：测定母血中的甲状腺激素，可动态观察不同孕周甲状腺激素变化，可及时发现胎儿低甲血症。     

高效液相色谱法检测人血浆中咖啡因及其3种去甲基代谢产物

以８－氯茶碱作为内标，利用高效液相色谱同时测定人血浆中咖啡及其３种去甲基代谢产物－－副黄嘌呤、可可碱和茶碱的方法。这４种物质可以在一个固定相柱子上被同时分离；流动相为甲；０．１ｍｏｌ／Ｌ磷酸二氢钠（３０：７０）（Ｖ／Ｖ）；流速：０．８ｍｌ／ｍｉｎ；紫外检测器，波长２７４ｎｍ。实验表明这４种物质的最小检出量均在７５ｎｇ／ｍｌ，并具有较好的线性、重复性及较高回收率。     

褪黑素载药纳米粒的优化设计及研制

目的：探讨采用复合乳液-溶剂挥发法制备褪黑素载药纳米粒的最佳工艺条件。方法：以聚乳酸、壳聚糖可降解生物材料为载体，明胶为分散剂，span-80和tween-80混合液为微乳液，根据微粒的表面形态、粒径大小、分布、包封率、载药量选择最佳工艺条件，制备褪黑素载药纳米粒。结果与结论：原子力显微镜下可见纳米粒表面圆滑，分布均匀。正交设计效应曲线图直观分析和方差分析结果显示，搅拌速度、溶剂挥发温度、聚乳酸与褪黑素投药比、壳聚糖浓度是影响制备工艺的主要因素。在30℃，1000r／min搅拌速度，搅拌时间45min，m(褪黑素)：m(聚乳酸)为1：5，V(Tween-80)：V(Span-80)为5：1，壳聚糖质量浓度为1％条件下，可制备成平均粒径为45．84nm，包封率为38．33％，载药量为8．35％的褪黑素载药纳米粒。     

5种生物碱胃癌多药耐药逆转剂的筛选及机制研究

目的 研究骆驼蓬碱、去氢骆驼蓬碱、贝母素甲、贝母素乙和氧化苦参碱对肿瘤细胞多药耐药性（MDR）的逆转作用及机制。方法 以胃癌亲本细胞系SGC-7901和MDR细胞系SGC-7901/VCR为细胞模型,采用MTT法检测上述5种生物碱的细胞毒活性及对MDR的逆转效果;用流式细胞仪检测MDR逆转效果最好的贝母素乙对肿瘤细胞内阿霉素（ADR）蓄积的影响;Western blotting法检测P-糖蛋白（P-gp）的表达;Hoechst荧光染色和细胞免疫荧光法检测贝母素乙诱导SGC-7901/VCR细胞凋亡情况。结果 骆驼蓬碱、去氢骆驼蓬碱、贝母素甲、贝母素乙和氧化苦参碱均能不同程度地抑制SGC-7901和SGC-7901/VCR细胞的增殖,在非毒剂量下贝母素乙能够显著提高SGC-7901/VCR细胞对ADR的敏感性及细胞内ADR的浓度,降低P-gp表达。贝母素乙联合5-氟尿嘧啶（5-FU）给药可诱导SGC-7901/VCR细胞凋亡,凋亡细胞cleaved caspase-3呈高表达。结论 贝母素乙具有作为胃癌MDR逆转剂的潜力,其逆转耐药的机制可能与下调P-gp表达和诱导细胞凋亡有关。     

HepG2 细胞谷胱甘肽含量和谷胱甘肽转移酶活力的诱导

目的：建立一种具有较高ＧＳＨ含量和ＧＳＴ活力的肝细胞系。方法：将ＨｅｐＧ２细胞在０．１,０．３,０．５ｍｇ／Ｌ浓度的ＣＤＤＰ间歇作用下传代１２个月后得到三种稳定的ＣＤＤＰ耐药细胞系ＨｅｐＧ２／ＣＤＤＰ０．１,ＨｅｐＧ２／ＣＤＤＰ０．３,ＨｅｐＧ２／ＣＤＤＰ０．５细胞的ＧＳＨ含量和ＧＳＴ活力,结果用显著性ｔ检验方法作统计学处理。结果：诱导刺激后的子代ＨｅｐＧ２／ＣＤＤＰ０．１,ＨｅｐＧ２／ＣＤＤＰ０     

疾病词“癘”“痱”“脪”“瘘”等考证

对“癘”“”“痱”“”“脪”“瘘”等6个疾病词及其相关词汇进行考证。主要利用佛经音义相关材料,结合历代辞书、文献材料,与《汉语大字典》相关条目进行比对,补充了某些疾病词的书证,增补或订补了某些词的义项,纠正了某些词的注音及释义,明确了某些词之间的字际关系,并据此对《汉语大字典》中这些疾病词及其相关条目中存在的问题和缺漏进行了补正。     

应用重组促红细胞生成素治疗长期血透患者的贫血

作者应用重组促红细胞生成素(rHuEPO)治疗68例依赖输血的透析患者(醋酸盐血透32例,碳酸氢盐血透24例,血液滤过12例)。治疗前 Hb 52.7±8.0g/L,Ht19.4±2.2%,血清铁蛋白>100μg/L。rHuEPO 治疗剂量150～300 u·kg~(-1)/周,静脉推注。当 Hb>100～120g/L,Ht>30%～35%时将 rHuEPO 减至维持量。疗程6.2±4.3个月。所有患者经 rHuEPO 治疗后不再输血,Hb 和 Ht 均有不同程度上升。其中39例 Hb 净增大于60g/L,Ht 增加大于10%,分别占治疗病例的57.4%。结果表明,rHuEPO 剂量为150～300 u·kg~(-1)/周是安全有效的,副作用远较国外报道为低。     

磁分离酶联免疫测定男性生殖激素方法性能评价

目的：对磁分离酶联免疫测定（MAIA）法测定男性生殖激素的方法学性能作临床和实验室评价。方法：将本法与放射免疫测定（RIA）法进行对比研究。结果：MAIA法测定促卵泡生成激素（FSH）、促黄体生成素（LH）、睾酮（T）和催乳素（PRL）的线性分别为0－150IU／L、0－200IU／L、0．5－55ng/L、0－250ng/L；最小检测量分别为0．3mIU/ml、0．25mIU/ml、4μIU/ml、4μIU/ml；批内CV＜4％，批间CV＜8％，平均回收率偏差＜5％，互感率＜3％；与RIA法比较，两法相关系数分别为0．9826、0．8550、0．8512、0．9831。临床质控观察60d，质控稳定；成年健康男性（n=95）血清FSH、LH、T、PRL的参考范围分别为：0．25－10．18IU／L、0．33－8．95IU／L、0．54－11．11ng/L和8．77－33．43ng/L。结论：用MAIA法测定男性生殖激素，方法灵敏，结果可靠，先例临床要求。     

磁场对大白鼠生殖功能的影响

本文采用放射免疫测定技术、通过检测雄性大白鼠体内 FSH、LH 及 T 和雌性大白鼠体内 FSH、LH 及 E_2的水平变化,研究了磁场对大白鼠生殖功能的生物学效应。实验结果表明,在表面静磁场为2000GS 的旋磁作用下,这些促性腺激素及性激素的含量均无明显改变。作者认为这一结果提示,磁场对大白鼠的生殖功能无不良影响,因而对磁疗技术在临床推广使用上的安全性问题提供了一个理论依据。     

高效液相 (HPLC) 荧光法同时测定人血浆中4种硫醇物的浓度

 目的  建立同时测定人血浆中半胱氨酸(cysteine,Cys)、同型半胱氨酸(homocysteine,Hcy)、半胱氨酰甘氨酸(cysteinylglycine,CysGly)和谷胱甘肽(glutathione,GSH)等4种硫醇物的高效液相色谱法(high-performance liquid chromatography,HPLC)。方法  血浆经磷酸盐缓冲液(phosphate buffered saline,PBS)稀释后,用三(2-羧乙基)膦盐酸盐［tris-(2-carboxyethyl)-phosphine hydrochloride,TCEP］还原,用三氯乙酸(trichloroacetic acid,TCA)溶液进行蛋白沉淀,再用7-氟苯呋咱-4-硫酸铵盐(7-fluorobenzofurazan-4-sulfonic acid ammonium salt,SBD-F)进行衍生化反应,荧光检测器检测。色谱条件:色谱柱为Kromasil C18 (250 mm×4.6 mm,5 μm),柱温29 ℃;流动相为甲醇:0.1 mol/L醋酸盐缓冲液(pH=4.5,3.5∶96.5,V/V),流速为0.8 mL/min,等度洗脱。激发波长385 nm,发射波长515 nm。采用外标法定量。结果  Cys、Hcy、CysGly和GSH的线性范围分别为50~800 μmol/L、4~64 μmol/L、10~160 μmol/L和2.5~40 μmol/L。Cys、Hcy、CysGly和GSH的最低检测浓度分别为2.5 μmol/L、1.0 μmol/L、1.0 μmol/L和1.0 μmol/L。各组分日内、日间精密度RSD均<12 %。平均回收率为95.01 %~116.17 %。结论  该方法具有检测时间短、灵敏性高、精密度和准确度好的特点,适用于临床人血浆中硫醇物浓度的常规检测。