三种皮片匀浆上清蛋白的免疫生化分析

利用紫外吸收光谱、PAGE 垂直板 SDS—PAGE 及快速染色盘状 PAGE 酯酶电泳技术,对人、豚鼠的三种不同皮片的匀浆上清液蛋白成份含量及酯酶同工酶进行了比较分析,旨在为临床上应用新生皮片储皮移植提供理论依据。结果表明,豚鼠皮及人皮皮片匀浆上清液中的蛋白含量、光谱分析、PAGE、SDS-PAGE 及酯酶同工酶电泳,均是新生皮组的变化显著低于其它两组,而-196℃处理组与成年新鲜皮片组存在着较小差别,因此上述免疫生化学指标的判定结果为:新生皮<(差于)-196℃处理成年皮<(差于)新鲜成年皮。     

Pharmacological Characterization of Bradykinin Receptors Coupled to Phosphoinositide Turnover in SV40-Immortalized Human Trabecular Meshwork Cells

This study sought to pharmacologically characterize bradykinin receptors on SV40-immortalized human trabecular meshwork (HTM3) cells. Phosphoinositide (PI) turnover studies were conducted using [³H]myo-inositol-labeled HTM3 cells and anion exchange chromatography to quantify [³H]inositol phosphates generated in response to bradykinin (BK) and various BK analogs. The blockade of these responses was studied using two potent and receptor-subtype selective antagonists. BK and T-kinin (Ile-Ser-BK; TK) induced a 4.2–4.4 fold stimulation of PI turnover above base levels at 1–10 μM. Several other peptides unrelated to BK, including angiotensin II, endothelin, cholecystokinin, bombesin and peptide YY tested at 1–10 μMwere essentially inactive. The molar potencies (EC₅₀) of BK, TK and close analogs were: BK=4.5±0.5 nM(n=6), Lys-BK=6.5±0.7 nM(n=3), TK=38.8±6.6 nM(n=8), Met-Lys-BK=41.5±13.4 nM(n=4), Des-Arg⁹-BK=2093±626 nM(n=4). All the latter BK-related peptides>were full agonists. The actions of BK and TK were potently and competitively antagonized by Hoe-140 (molar potency=0.6–1 nM;pA₂n=8.97–9.21,n=3–4) and byD-Arg⁰[Hyp³,-Thi^5,8,-DPhe⁷]-BK (molar potency=251 nM;-log potency, pK_b=6.6), two selective B₂-type BK antagonists. In conclusion, rank order of potency of BK agonists and the blockade of BK- and TK-induced PI turnover by the selective antagonists are consistent with the classification of the BK receptors on HTM3 cells as the B₂-receptor subtype.     

桂美辛和山莨菪碱治疗胆绞痛的比较

桂美辛组(男性21例,女性35例;年龄44±12a)治疗胆绞痛56例,剂量300mg, po, tid,显效32例,有效21例,总有效率95％。山茛菪碱组52例(男性18例,女性34例;年龄46±13a),剂量10mg, im, tid,显效、有效分别为9与20例,总有效率56％。2组比较,P<0.01。桂美辛治疗胆绞痛有疗效高、不良反应少的优点。     

阻塞性睡眠呼吸暂停与缓慢性心律失常的关系

Objective To analyze the relations between obstructive sleep apnea and bradyarrhythmia.Methods From 1999 to 2005,203 patients who came from Bering Tongren Hospital and Fuwai Hospital were found to have sleep apnea in an ambulatory study. A Hoher electrecardiogram was recorded for 24 hours within 2 weeks after patients were diagnosed as obstructive sleep apnem Results Nocturnal episodes of bradyarrhythmia were identified in 12(5.9%)of 203 patients.Body mass index and respiratory disturbance index in patients with bradyarrhythmia(n=12)were higher than those in patientswithour bradyarrhymia(n=191)(34±5 735.24±6 and 63±15 vs.25±5,respectively,both P<0.01).There was a significant difference in end-apneic oxygen saturation in apnea/hypopnea episodes with and without bradyarrhythmia(63%±15% vs.75%±11%,P<0.05).A linear relation between end-apneic oxygen saturation and number of sinus arrests and heart blocks was not found.Conclusions Patients with apnea-associated bradyarrhythmia have higher body mflgB index and higher respiratory disturbance index than patients without bradyarrhythmi&Bradyarrhythmia occurres independently from decrease in oxygen saturation.     

单核吞噬细胞应答伤寒沙门菌的实验研究

目的 研究单核吞噬细胞应答伤寒沙门菌的机理。方法 采用体外培养的PMA分化的THP－1细胞，检测其内化和杀伤胞内伤寒沙门菌的活性，以及伤寒沙门菌诱导PMA分化的THP－1细胞产生TNF－α和IL－12的情况。结果 PMA分化的THP－1细胞内化和杀伤Vi阴性伤寒沙门菌的活性明显高于内化和杀伤Vi阳性伤寒沙门菌的活性。IFN－γ明显中此活性。伤寒沙门菌诱导PMA分化的THP－1细胞可以产生一定量的TNF－α和IL－12，然而，IFN－γ活化的PMA分化的HTP－1细胞产生TNF－α和IL－12的量明显增加。结论 伤寒沙门菌在单核吞噬细胞中的存活可能与Vi抗原的存在有关；IFN－γ在调节机体细胞免疫，防循伤寒沙门菌感染中起着重要的作用。     

免疫反应在实验性游离型腰椎间盘突出自然吸收中的意义

目的：通过检测CD3和IgG在实验性游离型腰椎间盘突出自然吸收中的表达，探讨腰椎间盘突出后能否自然吸收及其可能的吸收机制。方法：将25只成年狗平均分成5组，从L2/3切取髓核组织，置于L5处的硬脊膜外，于术后2，4，6，8，12周，取动物标本以及正常部位的髓核组织，用CD3抗体和抗IgG进行免疫组化检测。结果：约30%的标本局部为脂肪组织，54%的标本局部硬脊膜与骨粘连，16%的标本既无粘连也无脂肪，免疫组化测定显示，随着时间的推移，CD3^ 细胞的浸润程度呈递减趋势，而IgG沉积的分布程度呈递增趋势，正常髓核无CD3^ 细胞浸润，IgG沉积分布极少。结论：在椎管内，狗游离的髓核组织8-12周后可部分或全部自然吸收，其吸收机制是机体自身免疫反应的结果。     

凝血机制紊乱在SIRS发展中的作用

凝血机制紊乱在全身炎症反应综合症(SIRS)发展、恶化过程中起重要作用．对SIRS时凝血系统紊乱的形成机制、在SIRS发生发展过程中的作用及其对病情危重程度的预测价值作一综述．     

正常人及大鼠心脏内皮素转换酶的分布

目的:了解正常人和大鼠心脏各部分内皮素转换酶(Endothelin-conveerting en-zyme,ECE)的分布。方法:采用半定量RT-PCR法检测ECE mRNA表达,同时根据外源性的巨内皮素-1转变为内皮素-1的量判定ECE活性。结果:正常人心脏各部位心肌均存在ECE,ECEmRNA表达和活性的分布特点一致:心房显著高于心室,左、右心房间及左、右心室和室间隔间无显著性差异。大鼠的ECE mRNA表达和活性分布规律与人相似。结论:正常人和大鼠心脏各组分均存在ECE,且两者的分布规律相似。     

Good regulation of acupuncture in simple obesity patients with stomach-intestine excessive heat type

In order to investigate the regulatory effect of acupuncture on obesity patients with the Stomach-Intestine Excessive Heat Type, the pre-acupunctureal and post-acupunctural obesity index and biochemical indices of 718 simple obesity patients with Stomach-Intestine Excessive Heat Type were observed. It was showed that the marked weight loss effect was achieved in the cases by acupuncture, and the biochemical indices improved. It suggests that acupuncture had a optimal regulatory effect on the function of nerve, endocrine, digestion and energy metabolism.     

特发性甲状旁腺机能减退症颅脑CT及MRI表现

目的探讨颅脑CT及MRI检查对特发性甲状旁腺机能减退症(IHP)的诊断价值。方法回顾性分析16例经临床确诊的IHP患者头颅CT(16/16)和MRI(3/16)表现,观察病变的范围和密度/信号等特点。结果IHP颅内主要表现为多发钙化性病变,在CT上表现为高密度,CT值114～373HU,在MRT1WI呈稍高信号或高信号,T2WI呈等信号。双侧尾状核、苍白球、壳核及丘脑的对称性、条形或团块状钙化16例;双侧额、颞、顶、枕叶皮层下钙化10例;小脑齿状核钙化6例(双侧4例,单侧2例);侧脑室旁钙化2例。结论CT和MR对IHP的诊断非常重要,其中CT对病变的显示优于MR,与临床结果结合,对IHP具有定性诊断意义。