提高胃黏膜活检标本幽门螺杆菌分离率和复苏率的研究

目的 探索提高胃黏膜活检标本幽门螺杆菌(helicobacter pylori, H.pylori)分离率和复苏率的培养流程.方法 应用145例尿素酶阳性、布氏肉汤培养基运送的胃黏膜活检标本.其中75例随机接种于布氏肉汤固体培养基、哥伦比亚琼脂培养基和脑心浸液固体培养基中,在37℃微需氧条件下培养7d,比较各培养基H.pylori阳性率;H.pylori经30%甘油布氏肉汤、30%甘油脑心浸液保存液-70℃冻存、哥伦比亚琼脂培养基复苏后,观察不同保存液对H.pylori复苏率的影响.另选70例标本,通过初次培养、2次及3次接种的方法增殖H.pylori, -70℃冻存后再复苏,观察接种次数对H.pylori复苏率的影响.结果 哥伦比亚琼脂培养基的H.pylori阳性率明显高于布氏肉汤和脑心浸液固体培养基(P＜0.01,P＜0.05);H.pylori的复苏率在30%甘油布氏肉汤冻存液中高于30%甘油脑心浸液(P＜0.05);经2、3次接种后冻存的H.pylori复苏率显著提高.结论 通过布氏肉汤培养基运送、哥伦比亚琼脂培养基接种和多次传代培养、30%布氏肉汤培养基保存、复苏时用哥伦比亚培养基接种培养的程序,明显提高临床H.pylori菌株的分离培养阳性率和复苏率.     

幽门螺杆菌培养方法的探讨

目的 建立一种简单有效的幽门螺杆菌(Hp)培养方法.方法 胃镜下取患者胃黏膜,进行快速尿素酶试验,对试验阳性患者胃黏膜进行培养.将胃黏膜组织剪碎后铺在含脑心浸液的哥伦比亚血琼脂平板上,放入自制微需氧罐,恒温35℃培养3～5 d,取菌株用快速尿素酶法、过氧化氢酶法、氧化酶法和革兰染色4种方法 鉴定,4种鉴定方法 同时符合者为Hp.结果 53例患者胃黏膜标本培养后有菌落生长45例,经鉴定均为Hp,培养阳性率为84.9%;平板上的Hp菌落呈针尖样大小,透明湿润,直径为0.1～3 mm.结论 此方法 可以有效地培养出Hp.     

一种改良幽门螺杆菌液体培养方法

目的:探索一种简便的液体培养方法培养幽门螺杆菌(Hp)。方法:采用组织培养瓶,装少量含有10 %小牛血清、0 .5 %淀粉、10 mg/ L万古霉素和2 5 0 0 U / L多粘菌素B的脑心浸液肉汤,在厌氧罐中通过抽气换气建立微需氧环境,37℃振荡培养,平板菌落计数法检测生长情况。结果:培养2 4 h～4 8h,液体中活菌水平超过10 8cfu/ ml,涂片染色细菌形态典型。结论:此Hp液体培养方法简便可行,细菌生长良好,能满足对Hp的毒力因子、菌体成分的研究需要。     

用卵黄替代血制备布氏培养液培养幽门螺杆菌

幽门螺杆菌 (H elicobacter pylori,Hp)培养无论是用于临床标本分离菌株 ,还是实验室研究 ,以往均采用布氏或空肠弯曲菌选择性琼脂基础的血平板 ,血液来源于绵羊或兔 [1 ,2 ]。由于采血步骤繁琐 ,费用高 ,已有人报道用卵黄替代血制备培养液 [3 ,4] ,但因培养液是用牛脑心浸液替代布氏培养液 ,费用仍较高。笔者对已有的方法进行改良 ,将卵黄加入布氏培养液 ,以简化培养液制备步骤 ,降低培养成本 ,不影响培养效果。1　材料与方法1.1　菌株　 F11为保存 2年的菌株 ,FZ7为新近分离的菌株 ,两株 Hp均分离自消化性溃疡患者 ,均有典型的生物学性…     

采用改良的克氏双糖铁琼脂培养基从漱口液中分离幽门螺杆菌的实验探索

目的探索高效、简捷、方便、低廉的方法从人群漱口液中分离幽门螺杆菌。方法被检者用生理盐水漱口,回收漱口液,离心,弃上清液,取沉淀物置脑心浸液培养基增菌培养。取菌液到改良的克氏双糖铁琼脂培养基中分离培养,挑取变红的菌落进行纯培养。对纯培养物进行染色检查和生化鉴定。结果漱口液中分离培养获得的纯培养物为幽门螺杆菌。结论用改良的克氏双糖铁琼脂培养基能比较快速准确地分离出漱口液中的幽门螺杆菌。     

一种改良幽门螺杆菌液体培养方法

目的：探索一种简便的液体培养方法培养幽门杆菌（ＨＰ）。方法：采用组织培养瓶,装少量含有１０％小牛血清、０．５％淀粉、１０ｍｇ／Ｌ万古霉素和２５００Ｕ／Ｌ多粘菌素Ｂ的脑心浸液肉汤,在厌氧罐中通过抽气换气 建立微需氧环境,３７℃振荡培养,平板菌落计数法检测生长情况。结果：培养２４￣４８ｈ,液体中活菌水平超过１０＾８ＣＦＵ／ｍｌ,涂片染色细菌形态典型。结论：此Ｈｐ液体培养方法简便可行,细菌生长良好,能满     

幽门螺杆菌菌种保存的实验研究

本文报道了幽门螺杆菌在２种培养基和４种温度下保存效果的实验研究．１０株被试菌株经改良Ｓｋｉｒｒｏｗ琼脂平板培养２４～４８ｈ，刮取菌苔于含１０％小牛血清、Ｎ％甘油布氏肉汤，在─７０℃条件下能存活１２个月，用同样方法在─４ｏ℃下多数菌株只能存活半个月．将菌苔置于特殊半固体培养基于３５℃传代培养保存，１年存活率为６０％，但在３个月内形态较典型．对存活菌株进行细菌形态，菌落特征和生化特性试验证明保存前后其生物学性状完全一致．     

尿素对幽门螺杆菌生长的影响研究

目的:研究尿素对幽门螺杆菌生长的影响.方法:在幽门螺杆菌培养基中分别加入3种浓度(5 mmol/L,10 mmol/L和20 mmol/L)的尿素,然后将培养基pH分别调至3.5、4.5、5.5.将10株Hp分别接种于这9种培养基中,以确定最佳条件组合.之后采用最佳条件进行胃黏膜活检标本Hp的培养.结果:10株Hp在9种含尿素培养基中以尿素浓度为10 mmol/L、pH为4.5时生长最好,其他8种与之比较差异极为显著(P＜0.01),57份胃镜活检标本分别接种于尿素浓度为10 mmol/L、pH为4.5时生长最好,其他8种与之比较差异极为显著(P＜0.01),57份胃镜活检标本分别接种于尿素浓度为10 mmol/、pH 4.5培养基和pH 7.0不含尿素的普通Hp培养基中,32份标本(56.1 %)在尿素培养基中培养阳性,其中22份(38.6%)在普通培养基中培养阳性.结论:含有适当浓度尿素的培养基可用于胃黏膜Hp的分离培养.     

尿素对幽门螺杆菌生长的影响研究

目的 :研究尿素对幽门螺杆菌生长的影响。方法 :在幽门螺杆菌培养基中分别加入 3种浓度 (5 mmol/ L,10 mmol/ L和 2 0 m mol/ L )的尿素 ,然后将培养基 p H分别调至 3.5、4 .5、5 .5。将 10株 Hp分别接种于这 9种培养基中 ,以确定最佳条件组合。之后采用最佳条件进行胃黏膜活检标本 Hp的培养。结果 :10株 Hp在 9种含尿素培养基中以尿素浓度为 10 mmol/ L、p H为 4 .5时生长最好 ,其他 8种与之比较差异极为显著 (P<0 .0 1) ,5 7份胃镜活检标本分别接种于尿素浓度为 10 mm ol/ L、p H为 4 .5时生长最好 ,其他 8种与之比较差异极为显著 (P<0 .0 1) ,5 7份胃镜活检标本分别接种于尿素浓度为 10 mmol/、p H 4 .5培养基和 p H 7.0不含尿素的普通 Hp培养基中 ,32份标本 (5 6 .1% )在尿素培养基中培养阳性 ,其中 2 2份 (38.6 % )在普通培养基中培养阳性。结论 :含有适当浓度尿素的培养基可用于胃黏膜 Hp的分离培养。     

幽门螺杆菌实验室检测与应用价值

1983年由澳大利亚医生R.Warren和B.Marshall从胃黏膜组织中成功分离培养出幽门螺杆菌(Helicobacter pylori,Hp)以来,Hp与慢性活动性胃炎和消化性溃疡以及在发病过程中的作用已得到证实。但Hp感染缺乏临床表现特征,Hp感染诊断主要依靠实验室检测。Hp检测技术日益完善和准确,方法从细菌形态学发展进入到Hp全基因序列测定分析阶段。Hp感染检测方法可分为:取胃黏膜标本检测Hp,包括细菌培养、快速尿素酶试验、组织涂片和切片染色;呼气试验和尿氨排出试验检测Hp;血清免疫学方法检测Hp。根据检测是否需做胃镜检查分为:直接检测法,必须在胃镜下取材,包括细菌培养、涂片染色、快速尿素酶试验、活检标本切片染色和多聚酶链反应等;间接检测法,不需要胃镜下取材,包括13C、14C呼气试验、15N尿氨排出试验和血清免疫学检测等。Hp感染实验室检测的常用方法有:1微生物学方法1.1细菌培养法从胃黏膜活检标本中分离培养出Hp,再用形态学和生物化学方法鉴定,是诊断Hp感染最可靠的方法。Hp是微需氧菌,不能在大气下和绝对厌氧条件下生长,它需要的气体条件是N285%、CO210%、O25%,还需要有一定的湿度和较...     

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.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

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.     

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.     

Scientific principles and rigorous processes should be followed in developing clinical guidelines for therapeutic interventions of integrative medicine

A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care（~＇4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.