急性呼吸性酸中毒时脑室内注入乙酰唑胺对［HCO_3~－］的影响

通过复制犬急性呼酸动物模型，动态观察动脉血和脑脊液（ＣＳＦ）酸碱变量发现，在动脉二氧化碳分压（ＰａＣＯ２）和血浆［ＨＣＯ_３~－］分别升高为３．９９９ｋｐａ和３ｍｍｏｌ／Ｌ时，ＣＳＦ二氧化碳分压（ＰＣＯ２）升高值同血浆相似，而ＣＳＦ（ＨＣＯ_３~－）的改变值在两组之间有显著性差异（Ｐ＜０．０１）。６ｈ时，Ⅰ组（脑室注入乙酰唑胺）ＣＳＦ［ＨＣＯ_３~－］平均升高为２．５ｍｍｏｌ／Ｌ；Ⅱ组（脑室注射等量人工模拟ＣＳＦ）ＣＳＦ［ＨＣＯ_３~－］平均升高为６ｍｍｏｌ／Ｌ。结果说明：急性呼酸时，ＣＳＦＨＣＯ_３~－的形成主要来源于脑ＣＯ２的水化作用，乙酰唑胺能减少ＣＳＦＨＣＯ_３~－的形成。ＨＣＯ_３~－形成过程中产生的Ｈ＋可能部分由脑ＮＨ３缓冲。     

新型维生素D代谢产物：1．25─（OH_2）D_3─26，23─Lactone

新型维生素Ｄ代谢产物：１．２５─（ＯＨ_２）Ｄ_３─２６，２３─Ｌａｃｔｏｎｅ郑明慈（广西桂林医学院围产医学研究室）１．２５－（ＯＨ２）Ｄ３－２６，２３－Ｌａｃｔｏｎｅ（１．２５－Ｄ３－Ｌａｃｔｏｎｅ）是近几年新发现的一种维生素Ｄ的代谢产物。给大鼠注射...     

代谢性酸中毒犬脑脊液［HCO－_3］与Pco_2的关系

作者旨在探讨代谢性酸中毒时脑脊液（ＣＳＦ）［ＨＣＯ－３］与ＰＣＯ２的相互关系。两组代谢性酸中毒模型均由静脉内输入０．２ｍｏｌ／ＬＨＣＩ产生，［ＨＣＯ－３］ａ１ｈ内下降到（１２２）ｍｍｏｌ／Ｌ。实验６ｈ时ＣＳＦ［ＨＣＯ－３］：１组（正常碳酸血性代酸）下降了１．６ｍｍｏｌ／Ｌ；组（低碳酸血性代酸）下降了７．０ｍｍｏｌ／Ｌ．ＣＳＦ［ＨＣＯ－３］与ＣＳＦＰｃｏ２，显著正相关（ｒ＝０．８３４，Ｐ＜０．０ｌ）．结果说明代谢性酸中毒时ＣＳＦ［ＨＣＯ－３］并不受［ＨＣＯ－３］ａ的明显影响，主要取决于ＣＳＦＰｃｏ２的变化，其调节机制与脉络丛上皮细胞内ＣＯ２的水化作用和ＣＡ活性有关。     

大黄素对大鼠腹腔巨噬细胞生物合成白三烯B4的影响

研究不同浓度大黄素对大鼠腹腔巨噬细胞（ＭΦ）生物合成白三烯Ｂ_４（ＬＴＢ_４）的影响。结果表明大黄素在５×１０￣（－７）～５×１０￣（－６）ｍｏｌ／Ｌ浓度范围内（ｎ＝４），可抑制大鼠腹腔ＭΦＬＴＢ_４的生物合成，量效关系良好（ｒ＝０．９５９１，ｎ＝４）；大黄素对大鼠腹腔ＭΦ生物合成ＬＴＢ_４的抑制率范围为２８．４±６．７％～８８．０±５．３％。大黄素５×１０￣（－６）ｍｏｌ／Ｌ，相当于氟灭酸１×１０￣（－４）ｍｏｌ／Ｌ抑制作用；ＬＴＢ_４的半数抑制率（ＩＣ_（５０））为１．２×１０￣（－６）ｍｏｌ／Ｌ。总之ＥＭＯ的抗炎机制与抑制ＭΦ生物合成ＬＴＢ_４有关。     

78例绝经后骨质疏松症的诊断治疗

通过掌握绝经后骨质疏松症的诊治规律，为今后开展老年妇女保健工作提供有益的依据。选择１９９２．９～１９９４．１０在我院就诊的７８例绝经３～２８ａ有骨痛症状病员，测定血清促卵泡素（ＦＳＨ）、促黄体素（ＬＨ）、雌二醇（Ｅ_２）、骨钙素（ＢＧＰ）、尿羟脯胺酸（ＯＨＰＲＯＬ）、吡啶并酚（Ｐｙｄ）、尿钙（Ｃａ）、肌酐（Ｃｒ）；行双光子（ＤＥＸＡ）、骨密度（ＢＭＤ）检查。提供降钙素及１α－２５（ＯＨ）Ｄ_３治疗３个月，判断疗效。结果表示：与对照组相比，病员血清Ｅ２、ＢＧＰ、ＢＭＤ值下降（Ｐ＜０．０５），血ＦＳＨ、ＬＨ，尿Ｐｙｄ／Ｃｒ、Ｃａ／Ｃｒ比值增高（Ｐ＜０．０５），经治疗后症状改善，ＢＭＤ值升高（Ｐ＜０．０１）。病员ＢＭＤ值下降与绝经年限及血清Ｅ_２下降呈正相关（系数ｒ＝０．６８７２）。提示绝经后妇女应警惕骨质疏松发生，降钙素及１α－２５（ＯＨ）Ｄ_３应用有助于绝经后骨质疏松防治，病员经治疗后ＢＭＤ增高可减少骨质疏松并发骨折的发生，对减轻社会负担、减少医药耗资有一定意义。     

反义寡脱氧核苷酸对人肝癌裸鼠模型生长及转移的影响

目的 观察反义Ｈ－ｒａｓ寡脱氧核苷酸（ＯＤＮ）对高表达蛋白ｐ２１Ｈ- ｒａｓ的人肝癌高转移裸鼠模型ＬＣＩ－Ｄ２０细胞生长、凋亡及转移潜能的影响。方法原代培养ＬＣＩ－Ｄ２０细胞，经１０μｍｏｌ／Ｌ浓度反义ＯＤＮ处理后，以１．５×１０细胞数分别接种于１４只裸鼠皮下缝制皮囊内：６只接种反义Ｈ－ｒａｓＯＤＮ处理细胞，４只接种Ｈ－ｒａｓ非特异性反义ＯＤＮ处理细胞，余４只接种未作处理的对照细胞。结果反义Ｈ－ｒａｓ对ＬＣＩ－Ｄ２０细胞增殖具有显著抑制作用（ｔ＝３１．５２９，Ｐ＜０．０１），反义ＯＤＮ处理细胞，Ｓ期比率（３６．０±１．４）显著低于对照组（５８．５±０．９，ｔ＝１３．５１９，Ｐ＜０．０１），而Ｇ１／Ｇ０期比率（５６．７％±１．１％）高于对照组（３７．４±０．７，ｔ＝１４．８０２，Ｐ＜０．０１）；反义Ｈ－ｒａｓＯＤＮ处理细胞的凋亡发生率（３４．０％±４．５％）显著高于对照组（２．５％±１．２％，ｔ＝１３．４３４，Ｐ＜０．０１）；反义Ｈ－ｒａｓ处理对ＬＣＩ－Ｄ２０细胞在接种动物体内的生长具有显著延迟抑制作用（ｔ＝３．５０９，ｔ＝３．４５２，Ｐ＜０．０１）；接种动物的肺转移率，反义Ｈ－ｒａｓＯＤＮ处理组显著低于对照组。     

姜黄素的化学测定的新方法

建立测定姜黄素的新方法,并应用于生药姜黄中姜黄素的含量测定和研究姜黄素与Ｈ２Ｏ２及ＯＨ的相互作用关系。方法采用电化学分析方法。结果在０．１ｍｏｌ．Ｌ＾－１ＮＨ３－ＮＨ４Ｃｌ（ｐＨ＝１０．１）和３．０＊１０＊１０＾－２ｍｏｌ．Ｌ＾－１Ｈ２Ｏ条件下,姜黄素一阶导数峰高与其浓度在２．０＊１０－７－８．０＊１０＾－６ｍｏｌ．Ｌ＾－１范围内成线性。本实验通过Ｈ２Ｏ２存在下,姜贡素产生的级谱催化波,直接观测到     

（Pb,Ca,La）TiO3陶瓷的溶胶—凝胶制备和特性

用溶胶－凝胶工艺制备了Ｐｂ_（０．９５－ｘ）Ｃａ_（０．０５）Ｌａ_ｘＴｉ_（１－ｘ／４）Ｏ_３（Ｘ＝０．０５～０．２）系统的微粉和陶瓷，该材料密度可达理论密度值的９０％以上。研究了该陶瓷的物理和电性质，所测得热释电系数ｐ＝２．２０×１０~（－８）～３．１７×１０~（－８）Ｃ／ｃｍ~２·Ｋ，并具有负温度系数效应。讨论了对应Ｔｉ—Ｏ_Ｉ伸缩振动铁电软模和Ｏ_Ｉ－Ｔｉ－ＯＩＩ、（Ｐｂ、Ｃａ、Ｌａ）－（ＴｉＯ_３）的弯曲振动红外和远红外吸收光谱。根据陶瓷极化前后ＸＲＤ谱强度的变化，计算了该陶瓷极化后电畴在空间的择优取向分布。     

幼儿龋病活跃性与唾液部分生化指标的关系

目的：了解幼儿龋病活跃性与唾液部分生化指标的关系，为筛选龋病活跃性幼儿提供理论依据。方法：对１１０名３～４岁幼儿非刺激性全唾液的ｐＨ值、ＨＣＯ－３、溶菌酶（ＬＺＭ）、乳酸脱氢酶（ＬＤＨ）和碱性磷酸酶（ＡＫＰ）进行测定。ｐＨ值用ＰＨＳ－３Ｃ型酸度计测定；ＬＺＭ用微量快速比色法测定；ＨＣＯ－３用改良滴定法测定；ＬＤＨ用比色法测定；ＡＫＰ用磷酸苯二钠法测定。结果：无龋幼儿（龋补齿数：ｄｆｔ＝０，４９名）唾液ｐＨ值及ＬＺＭ活性显著高于多龋幼儿（ｄｆｔ≥５，４３名）（Ｐ＜０．０１），ＨＣＯ－３、ＬＤＨ、ＡＫＰ两组间无显著差异（Ｐ＞０．０５），并且龋病幼儿（ｄｆｔ为１～１８，６１名）的ＬＺＭ活性与ｄｆｔ呈显著负相关关系（ｒ＝－０．２５１，Ｐ＜０．０５）。结论：幼儿龋病活跃性与唾液ＬＺＭ活性有关。     

龋病患者的唾液参数分析

本研究检测了１０例无龋成人（龋失补牙数为零）和１０例严重龋病患者（龋失补牙数等于或大于１０）刺激性全唾液的流率、缓冲能力和碳酸氢根（ＨＣＯ_３~－），超氧化物歧化酶（ＳＯＤ）、缓冲碱、总蛋白、白蛋白、尿素氮、尿酸的浓度。结果表明无龋成人的唾液流率、缓冲能力和缓冲碱、ＨＣＯ_３~－、尿素氮和ＳＯＤ的浓度明显高于严重龋病患者（Ｐ＜０．０５）；而尿酸、总蛋白、白蛋白浓度两组之间比较差别无显著性（Ｐ＞０．０５）。本文研究还表明，唾液缓冲能力与其中的缓冲碱、ＨＣＯ_３~－及尿素氮的浓度有相关关系。     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.