大肠癌组织和正常组织自体荧光差异及其机制研究

目的 探讨大肠癌组织自体荧光光谱特征及其生物学机制.方法 对30例大肠癌病人的癌组织和正常组织进行激光诱导自体荧光光谱分析及Ⅳ型胶原的免疫组织化学检测,并进行相关性分析.结果 大肠癌组织在460nm处自体荧光峰强度低于相应正常组织的峰强度,随着癌组织中Ⅳ型胶原表达的降低,癌组织与相应正常组织的自体荧光峰强度差异增大.结论 大肠癌组织自体荧光峰强度明显低于相应正常组织的峰强度,Ⅳ型胶原的降解是大肠癌自体荧光减弱的组织学基础.     

激光诱导荧光诊断大肠癌的临床研究

目的 探讨利用激光诱导自体荧光光谱对大肠癌进行临床诊断的可行性.方法 使用370 nm的激光器和荧光探测系统对临床病例进行大肠组织离体及在体实验,进行荧光光谱测定和分析.结果 大肠正常组织和癌组织的自体荧光光谱特征差异主要表现在谱峰位置和强度方面,在400～600 nm范围内正常组织的荧光强度显著高于癌组织,尤其是480m左右的荧光强度存在明显差异;癌组织在波长(623±8)nm附近有1个突起的小峰,光谱强度也明显高于正常组织.结论 用激光诱导自体荧光光谱对大肠癌进行临床诊断是可行的.     

激光诱导自体荧光光谱区分大肠癌组织与大肠正常组织

目的探讨应用激光诱导自体荧光（LIAF）光谱方法诊断大肠癌的可行性，并确立判断依据。方法收集32例大肠癌手术切除的离体标本及相对应的大肠正常组织。采用Nd：YAG三倍频调Q激光器（波长380nm）和光学多道分析仪（OMA），观察大肠癌标本的激光诱导自体荧光光谱，根据大肠癌组织和大肠正常组织的激光诱导自体荧光光谱特征规律，寻找能够区分两者的光谱差异，得出判断依据，并与病理切片检查结果比较。结果大肠癌组织和大肠正常组织的LIAF光谱形状相似，均为双峰结构，大肠癌组织LIAF光谱强度及主、次峰强度明显低于大肠正常组织（P〈0．001）。LIAF光谱主峰波长475nm，次峰波长550nm，且大肠癌组织在640nm处，荧光光谱强度高于大肠正常组织。去除背景光后取上述各点集成荧光强度比值X1=（I475-1550）／I640，X2=I475／I640,X3=I550/I640为参数，采用改进的神经网络模型，建立数学判别方程√（6.184375＊X1）^2＋（1.987699＊X2）^2＋（2.965413＊X3）^2＋0．2，若W≥12判为大肠正常组织，若W〈12判为大肠癌组织。采用100个抽样标本进行模型检验，识别的准确率为94％。结论激光诱导自体荧光（LIAF）光谱可用于区分大肠正常组织与大肠癌组织。     

Cr:LiSAF激光诱导的大肠癌自体荧光研究

目的研究利用激光诱导自体荧光对肿瘤进行诊断。方法用Cr:LiSAF激光器诱导癌组织和正常组织产生自体荧光,分析各试验组光谱强度差异。结果在(461.3±10.1)nm处,正常组织的荧光峰值强度明显大于癌症组织,而在(627.5±9.8)nm处,正常组织的荧光峰值强度则明显小于癌症组织。结论大肠正常组织和癌组织的激光诱导自体荧光光谱差异有显著性,具有较强的实用性。     

大肠癌组织激光诱导自体荧光光谱规律

目的 探讨大肠癌组织激光诱导自体荧光(LIAF)光谱规律.方法 以Nd:YAG三倍频调Q激光器(波长380 nm)和光学多道分析仪(OMA)系统,自正常大肠组织、癌旁组织至癌组织,分别连续检测18例大肠癌手术标本的LIAF光谱.结果 大肠正常组织、癌旁组织和癌组织的LIAF光谱形状相似,均为双峰结构,主次峰波长分别为475 nm和550 nm;主峰强度由正常大肠组织经癌旁组织至癌组织依次为1413.78±96.46、751.22±76.32和490.84±81.28,癌组织平均降低922.94,与正常组织相比,差异有显著性(P＜0.001).结论 正常大肠组织、癌旁组织至癌组织LIAF光谱强度逐渐降低,光谱形状相似,主、次峰波长一致;癌组织的荧光强度低可能与激发光难于穿透癌组织激发到黏膜下层的荧光物质或(和)黏膜下层荧光物质减弱有关.     

膀胱正常组织和癌组织的显微自体荧光差异研究

目的:探讨膀胱正常组织和癌组织的显微自体荧光信号在膀胱壁各层的分布差异,为荧光法诊断早期膀胱癌提供理论基础。方法:采用共聚焦显微自体荧光图像系统采集与分析膀胱正常组织和癌组织的显微自体荧光图像。结果:正常组织的固有层呈现很强的荧光信号,上皮细胞荧光很弱。癌组织中癌细胞的荧光信号很弱,正常组织固有层的自体荧光强度显著地高于癌组织(P<0.001)。结论:膀胱正常组织各层荧光强度显著地高于癌组织对应深度的荧光强度,癌变后组织结构完整性的破坏和生化成分的改变是癌组织自体荧光强度降低的根本原因。     

结肠癌的激光诱发荧光光谱特征及其区分标准

用氮分子激光（波长３３７ｎｍ）做为激发光源，光多道分析仪为光谱分析手段，对３９例正常结肠和大肠癌的激光诱发荧光（ＬＩＦ）光谱分析的结果发现，正常结肠和大肠癌各具其不同的光谱特征峰值。正常结肠有一主峰和一次峰，主峰相对强度较强，其近红光侧下降较快，Ｆ１（４００ｎｍ处强度／５３０ｎｍ处强度）平均为１．２９，Ｆ２（主峰强度）平均为１２０２８，Ｆ３（主峰波长）在４６０ｎｍ；大肠癌也有一主峰和一次峰，主峰相对强度较弱，其强度为正常结肠强度的１／３～１／５，主峰近红光侧下降迟缓，Ｆ１平均为０．４３，Ｆ２平均为３９７０，Ｆ３在４７０ｎｍ。以正常结肠光谱参数为标准，区分大肠癌的敏感性为７４％，特异性为９６％，阳性预示值９４％，阴性预示值７８．６％，诊断符合率８４％；以大肠癌光谱参数为标准，区分大肠癌的敏感性为９１．３％，特异性为７３．９％，阳性预示值７７．８％，阴性预示值８９．５％，诊断符合率８３％。上述结果说明ＬＩＦ可以用来区分正常结肠和大肠癌     

大肠组织自体荧光光谱的判别诊断研究

目的：探讨利用激光诱导自体荧光对大肠正常与肿瘤组织进行可靠的判别与诊断。方法：利用自体荧光在体检测系统在结肠镜下测量获取组织自体荧光光谱,采用一种多元判别算法对光谱进行判别分类。结果：所建立的多元统计判别算法可以较高的灵敏度和特异性区分正常组织与肿瘤组织。对未知组织进行判别的灵敏度为80％,特异性为84％。     

荷瘤鼠乳腺癌组织的飞秒双光子荧光诊断

目的：检测荷瘤鼠乳腺癌组织的双光子荧光光谱。方法：乳腺癌荷瘤鼠腹腔注射血卟啉（HpD)。以飞秒激光照射小鼠的癌组织部位及周围正常组织部位。观察HpD双光子荧光光谱。结果：小鼠的癌组织部位可观察到外源性HpD双光子荧光光谱，而正常组织部位未观察到明显的双光子荧光光谱。结论：结论：飞秒激光外源性血卟啉双光子荧光诊断可作为癌症诊断的新方法。     

激光诱发荧光光谱诊断大肠癌价值初探

目的：研究用激光诱发自体荧光（ＬＩＦ）诊断大肠癌的光谱诊断标准。方法：采用ＬＩＦ技术对５８例大肠癌标本进行了检测。结果：有５３例（９１．４％）癌标本主峰峰强度＜５５００ｕ,次峰峰强度＜２０００ｕ,波谷强度＜１８００ｕ;而相应的非癌对照组织主峰峰强度＞１１０００ｕ,次峰峰强度＞４０００ｕ,波谷强度＞３８００ｕ。用该标准诊断大肠癌,敏感度９１．４％,特异度１００％,假阳性率０,假阴性率０．９１％。结论     

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…     

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.     

Development on Adjustable Calibration Marker for Shock Wave Focus

Shock wave lithotripsy （SWL） is a treatment of choice for upper urinary stones. However, this procedure is inappropriate for obese patients because the focus is often unable to reach the target owing to the limited focal distance in shock wave source. Although treating such patients in a blast path may increase the application length of shock wave source, it＇s difficult to find this path on the lithotripter monitor. For this reason, we invented an adjustable calibration marker in order to set an effective focus in the shock wave hath.     

Study on the TCM Pathogenesis of Angiopathic Complications of Type II Diabetes

Excess production of reactive oxygen species(ROS)of mitochondrion mediated by hyperglycemia is the common pathogenesis of angiopathic complications of diabetes.TCM holds that the damp from the dysfunction of spleen.kidney and liver is the causative factor of complications of diabetes.This is similar to the mechanism of Ros resulting in angiopathic complications of diabetes.When the angiopathic complications of type II diabetes mellitus(T2DM)are difierentiated as caused by turbid damp in TCM can be explained as ROS.Since the obstruction of pathogenic damp in channels and collaterals is said to be the main pathogenesis,the treating principle should be dissolving the damp to remove the obstruction.     

Leptin, Ghrelin and TNF-α before and after Hypo-caloric Traditional Chinese Diet and Auricular Acupuncture

INTRODUCTION Obesity is a complex emergent problem, which can be possibly solved not only by the diet but also by the life style and promotion of a constant physical exercise. 1, 2 No doubt careful attentions must be given to the nutritional condition of obese people, the dietary habits, the somatic build (i.e. distribution of fat mass) and the organic functions linked to formation of the fat mass. All the parameters should be constantly monitored before, during and after a diet treatment. 3, 4, 5     

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.     

Relationship between Dysglycemia and Carotid Atherosclerosis in Tibetan Population

People with dysglycemia are at high risk for atherosclerotic diseases. This study aims at investigating the atherosclerotic vascular damage in dysglycemia and its metabolic origin in Tibetan population.     

Acupuncture Combined with Spinal Tui Na for Treatment of Primary Dysmenorrhea in 30 Cases

Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.     

Luo Lingjie's Experience in Treating Chronic Nephropathy

In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.