Variation in125i-insulin absorption and blood glucose concentration

Summary The absorption of monocomponent porcine¹²⁵I-insulin Monotard and Isophane was studied in six insulin dependent diabetic patients over a period of 12 days. The absorption of insulin was measured as the disappearance of radioactivity from sites of injection. The daily¹²⁵I-insulin doses ranged from 20 to 48 IU between patients. The insulin absorbed varied considerably within and between patients. The range of individual daily absorbed insulin varied from 19 to 104 per cent of the¹²⁵I-insulin dose. A significant correlation (p<0.05) was found between insulin absorption and blood glucose concentration. Insulin absorption rates were relatively high before all hypoglycaemic episodes and reactive hyperglycaemia was only observed when relatively low insulin absorption rates followed the hypoglycaemic attack. The results show that lability in some insulin dependent diabetics is explained by variation in insulin absorption.     

联合检测ADA、CA125和CEA对结核性与恶性胸腔积液的诊断价值

目的 探讨联合检测胸腔积液中腺苷脱氨酶(ADA)、糖类抗原125(CA125)和癌胚抗原(CEA)对结核性与恶性积液的鉴别诊断价值.方法 采用酶连续监测法和化学发光免疫分析法检测82例结核性积液及56例恶性胸腔积液中ADA、CA125和CEA的水平,并对检测结果进行综合分析.结果 结核性胸腔积液中平均ADA含量明显高于恶性胸腔积液,而CEA和CA125平均水平明显低于恶性胸腔积液(P＜O.05).以ADA＞40U/L为临界值,对结核性积液的敏感性、特异性和准确性分别为82.8％,80.4％和81.7％.以CA125＞35U/ml和CEA＞5μg/L为临界值,对恶性积液诊断的敏感性分别为82.6％和71.7％,特异性分别为58.8％和82.8％,准确性分别为65.4％和76.0％;联合检测CA125和CEA诊断恶性胸腔积液的敏感性和准确性分别为93.5％和81.7％,显著高于单一检测项目(P＜O.05).结论 联合检测胸腔积液中ADA、CEA和CA125对早期鉴别诊断结核性与恶性胸水的有重要参考价值.     

IGF-1、IGFBP-3、CEA和CA125联合检测对肺癌的诊断价值

目的 探讨胰岛素样生长因子1(insulin-like growth factor-1,IGF-1)、胰岛素样生长因子结合蛋白-3(insulin-like growth factor binding protein-3,IGFBP-3)、CEA及CA125联合检测对肺癌诊断的临床价值.方法 采用化学发光法分别对77例肺癌患者和41名健康体检者血清IGF-1、IGFBP-3、CEA和CA125水平进行检测,并对检测结果进行对比分析.结果 肺癌组血清IGF-1水平明显高于健康对照组(P＜0.01),血清IGFBP-3水平明显低于健康对照组(P＜0.05);单项检测时IGF-1灵敏性为28.57％,CEA灵敏性为44.16％,CA125灵敏性为40.26％;三项指标联合检测时灵敏性为75.33％.结论 IGF-1有助于肺癌的诊断,IGF-1、CEA及CA125联合检测可显著提高肺癌检出率.     

血清人附睾分泌蛋白4在卵巢上皮性癌中的临床价值

目的 研究血清人附睾蛋白4(HE4)在卵巢恶性肿瘤中的诊断价值.方法 用酶联疫吸附试验方法对卵巢上皮性癌组(54例)、盆腔良性疾病组(60例)、正常组(60例)妇女血清中HE4和CA125进行双盲检测,结果以中位数表示,分析比较两者单独检测诊断卵巢恶性肿瘤的价值.血清HE4和CA125的正常值分别为0～ 140pmol/L和0～ 35KU/L,其中任一指标高于正常即为阳性.结果 ①卵巢上皮性癌组血清HE4和CA125水平分别为142.72pmol/L和136.07KU/L,分别与盆腔良性疾病组(分别为63.72pmol/L和72.20KU/L)和正常组(分别为57.82pmol/L和57.42KU/L)比较,差异均有统计学意义(P＜0.01).②以盆腔良性疾病组作参照人群时,HE4和CA125单独检测的受试者工作特征曲线下面积(ROC-AUC)分别为0.958和0.886,两者比较,差异有统计学意义(P＜0.001).③以ROC曲线最左上方的点130 pmol/L、正常组95％参考值80pmol/L和正常值的上限140pmol/L为界值点,比较HE4单项检测对卵巢上皮性恶性肿瘤的诊断能力,结果显示,界值点为80pmol/L的特异度和阳性预测值均为88％,明显低于界值点为130(分别为93％和90％)和140pmol/L(分别为93％和95％)时的特异度和阳性预测值(P＜0.01).结论 HE4单项检测诊断卵巢上皮性恶性肿瘤的特异度优于CA125单项检测.以140pmol/L为界值点,对卵巢上皮性恶性肿瘤的早期诊断准确率更高,而以130pmol/L为界值点有利于卵巢上皮性恶性肿瘤的筛查、降低漏诊率.     

NHL患者血清CA125、LDH检测的临床意义

测定82例初治非霍奇金淋巴瘤(NHL)患者治疗前后血清CA125、乳酸脱氢酶(LDH)含量。结果血清CA125升高35例,LDH升高35例;正常血清CA125和LDH者、其中一个指标增高者、两个指标均增高者放化疗的完全缓解率分别为85.7%、62.2%、29.4%,两两比较均有显著统计学差异(P均<0.05)。表明血清LDH和CA125是NHL有价值的预后判定指标。     

CA125单项与多项肿瘤指标联合检测在卵巢癌诊断中的比较

目的:探讨血清糖类抗原125(CA125)及CA125联合CA199、CA153、癌胚抗原(CEA)检测在卵巢癌诊断中的意义。方法:采用化学发光微粒子免疫检测法测定71例卵巢癌患者、10例卵巢交界性肿瘤患者和42例卵巢良性肿瘤患者血清中CA125、CA199、CA153和CEA的含量,阳性诊断标准分别为:CA12535 k U/L,CA19937 k U/L,CA15330 k U/L,CEA5μg/L。结果:在单项肿瘤标记物中,CA125的阳性率最高(84.5%),敏感度、特异度和准确度指标平稳。在不同的联合检测方案中CA199、CA153与CA125联合检测方案最优,较CA125单项检测敏感度和准确度均有提高。晚期卵巢癌(Ⅲ~Ⅳ期)患者的CA153、CA125含量高于早期卵巢癌(Ⅰ~Ⅱ期)患者(P0.001)。结论:CA199、CA153、CEA与CA125在卵巢癌鉴别诊断中均有一定价值,并可以根据CA153、CA125含量判断患者卵巢癌的分期,CA199、CA153与CA125联合检测是诊断卵巢癌较为理想的标记物组合。     

Identification of potential bioactive peptides generated by simulated gastrointestinal digestion of soybean seeds and soy milk proteins

In this work, the bioactive peptides produced during in vitro gastrointestinal digestion of soybean seeds and soy milk were investigated. The analysis was performed on extracted protein samples from soybean seeds and milk or directly on untreated soy milk. Proteins samples were subjected to simulated gastrointestinal digestion and then analyzed by nano-liquid chromatography coupled to tandem mass spectrometry for peptide sequencing. The identified peptides were 1173 in soybean seed samples, 1364 in untreated soy milk samples and 1422 in soy milk samples in which proteins were extracted by precipitation. The peptide identifications were then employed to search specific databases and look for the presence of bioactive peptides in the investigated samples, either with known biological activity or with potential antimicrobial activity. Results pointed out that soybean proteins underwent an extensive degradation process during gastrointestinal digestion and generated a large number of bioactive peptides, some with established activity, some with predicted antimicrobial activity. Finally, the supernatants collected after protein precipitation with acetone from both soybean seeds and soy milk were also analyzed to evaluate the presence of peptides produced by the action of endogenous proteases. Likely, peptides found in soy milk samples could be formed during food processing.     

碘125粒子组织间植入治疗癌性疼痛的疗效与安全性

目的:探讨碘125粒子组织间植入治疗肿瘤患者癌性疼痛的临床效果与不良反应.方法:将200例中晚期恶性肿瘤癌痛患者随机分作观察组与对照组,观察组予以碘125粒子组织间植入治疗,对照组予以药物治疗,观察与比较两组患者疼痛视觉模拟评分(VAS)、疼痛缓解率、平均镇痛时间及不良反应.结果:治疗后观察组与对照组VAS评分均明显减少,治疗后1d两组VAS无统计学差异(P＞0.05),治疗后7、30 d观察组VAS显著低于对照组(P＜0.05);观察组疼痛缓解率(88.0％)明显高于对照组(64.0％),有统计学差异(x2=5.908,P＜0.05);治疗后观察组平均疼痛时间显著较对照组短(￡=7.342,P＜0.05);观察组不良反应发生率(3.0％)明显低于对照组(11.0％).结论:碘125粒子组织间植入治疗癌性疼痛的效果确切,具有迅速与持久的镇痛效果,不良反应少,值得临床借鉴.     

Falsely elevated human epididymis protein 4 results and Risk of Ovarian Malignancy Algorithm in polymorbid women after solid organ transplantation: A pilot and case‐control study

Background

Cancer prevention is essential after transplantation (Tx). The use of HE4 and Risk of Ovarian Malignancy Algorithm (ROMA) is recommended as a tool for selective ovarian cancer screening; however, creatinine is a known confounder. This study assessed the reliability of HE4, CA125, and ROMA after Tx.

Methods

We matched a total of 202 women without gynecological malignancies and 236 men by age and serum creatinine. Each pair consisted of a patient after Tx (kidney, liver, heart, and pancreas) and a diseased but non‐Tx consecutive patient. Serum HE4, CA125 (Roche Cobas 6000), and creatinine (enzymatic, Abbott Architect) were measured in all patients.

Results

Creatinine correlated with HE4 (women: r = .864, P < .0001; men: r = .848, P < .0001). Age correlated slightly with HE4 in women (r = .250, P < .005) and men (r = .240, P < .0005). HE4 in women after Tx (median of 84.8 pmol/L) was significantly higher than non‐Tx women (53.7 pmol/L, P < .0001) in the reference range of serum creatinine. Neither HE4 nor CA125 correlated with tacrolimus concentration, but anemia, hyperparathyroidism, kidney, liver, and lung diseases were possible confounders for HE4 after transplantation (P < .05).

Conclusion

Human epididymis protein 4 (HE4) was significantly increased in women after solid organ transplantation compared to levels without transplants matched by age and serum creatinine. HE4 results may be misleading in these patients.