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1.
尿路感染是临床常见病和多发病,同时也是最常见的医院获得性感染.尿路感染的临床表现多样,症状不典型,白细胞尿和菌尿的检出是其筛检和确诊的重要指标.本文结合尿路感染的发病机制、诊断标准,对尿中白细胞和细菌检验项目和技术的临床意义及应用评价做了简要概述. 相似文献
2.
目的应用血清过敏原特异性IgE检测帮助临床寻找相应过敏原。方法应用免疫印迹法的德国Mediwiss医疗诊断公司生产的“敏筛”专用检测仪,对福建省莆田地区114例过敏性疾病患者血清进行总IgE检测,和对20种过敏原特异性IgE进行检测。结果(1)该地区过敏性疾病患者过敏原特异性IgE检出率为61.4%(70/114),其中在总IgE正常者中占16.7%(19/114);总IgE增高者70.2%(80/114),其中过敏原特异性IgE阴性者占25.4%(29/114)。(2)该地区过敏原是以吸入性过敏原中的户尘螨44.1%(41/93)、动物皮屑25.8%(24/93)、蟑螂23.7%(22/93)、柏16.1%(15/93)等四种为主。(3)该地区过敏性疾病患者同时混合两种和两种以上过敏原致敏者占总检人数的34.2%(39/114),过敏原特异性IgE阳性者占55.7%(39/70)。结论(1)临床上在耐心细致做好病史、接触史、职业史调查和充分掌握适应证的同时,应结合本地区过敏原的流行状况和生活环境,选择具有代表性的过敏原特异性IgE试剂盒进行检测,以期作出准确的诊断。(2)血清总IgE测定虽不能用来诊断或排除过敏,但有助于判断对特异性过敏原试验阴性患者是否需要进行进一步检查。 相似文献
3.
Objective To evaluate the clinical application of automated urine formed elements analyzer and/or urine dipstick analyzer for examination of urinary formed elements in screening urinary tract infection (UTI). Methods 148 fresh midstream clear-catch urine samples from the UTI patients and 284 fresh midstream clear-catch urine samples from non-UTI subjects were selected. Bacteria culture was performed for bacterial colony counting and identification. Bacteria counts ( BACT), yeast-like fungus and WBC were performed by UF-looOi automated urine formed elements analyzer. Leukocyte esterase test (LEU) and nitrite test (NIT) were performed by URISYS 2400 urine dipstick analyzer. We evaluated data obtained from urine dipstick analyzer, UF-1000i and combination of UF-1000i with urine dipstick analyzer and the results was compared with those obtained from quantitative bacterial culture. Then we evaluated the sensibility, specificity, positive predictive value (PPV), negative predictive value (NPV) and accuracy. Results Among the 148 patients with UTI, the positive rate of the quantitative bacterial culture was 73.6% (109/148), the positive rate of LEU and NIT detected by dipstick test 26. 4% (39/148).There was significantly statistical difference between bacterial culture and strip test(χ2 = 55.68 ,P < 0. 05 ). The positive rate of urine flow cytometry by UF-1000i with either positive of BACT and WBC was 91.2%(135/148), which was higher than the positive rate of the quantitative bacterial culture. There was significant difference between two methods (χ2 = 14. 70, P < 0. 05 ). The positive rate of anyone positive among BACT, WBC, LEU and NIT was 94. 6% (140/148) when detected with combination of dipstick test and UF-1000i, which was higher than the positive rate of the quantitative bacterial culture. And there was significant difference between two methods (χ2 = 20. 45, P < 0. 05 ). The sensitivity of dipstick test was low (26. 4% ,39/148 ), and specificity was high ( 99. 3%, 282/284 ) . The sensitivity, specificity, positive predictive value, negative predictive value of BACT detected by UF-1000i in diagnosing urinary tract infection were 92. 6% ( 137/148 ), 39. 8% ( 113/284 ). 44. 5% ( 137/308 ) and 91.1% ( 113/124 ), respectively. If the dipstick test was combined with UF-1000i, the sensitivity, negative predictive value, specificity, positive predictive value and accuracy were 98.0% ( 145/148 ), 97.1% ( 100/103 ). 35.2% (100/284) ,44. 1% (145/329) and 56. 7% (245/432), respectively. Conclusions The combination of urine dipstick test and automated urine formed elements analyzer UF-1000i plays an important role in early diagnosis of UTI. And it has significant value in diagnosis of UTI, especially for the patients with negative bacterial cultures of urine sample. 相似文献
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<正>P2X7受体属于嘌呤能受体,是P2X受体家族的成员,位于细胞表面的一种三聚体配体门控阳离子通道[1]。目前已经证实在很多细胞类型表面都有表达,包括造血干细胞、间充质干细胞、白细胞、红细胞、骨细胞、皮肤细胞,甚至各种恶性肿瘤细胞。同时,P2X7受体存在很多亚型。在人体中,P2X7受体变异大约有10种蛋白剪切体变化亚型;P2X7受体从A到J;P2X7受体A是保留完整长度的受体。P2X7受体B、E、G、J缺乏C末端结构[2]。 相似文献
6.
Objective To evaluate the clinical application of automated urine formed elements analyzer and/or urine dipstick analyzer for examination of urinary formed elements in screening urinary tract infection (UTI). Methods 148 fresh midstream clear-catch urine samples from the UTI patients and 284 fresh midstream clear-catch urine samples from non-UTI subjects were selected. Bacteria culture was performed for bacterial colony counting and identification. Bacteria counts ( BACT), yeast-like fungus and WBC were performed by UF-looOi automated urine formed elements analyzer. Leukocyte esterase test (LEU) and nitrite test (NIT) were performed by URISYS 2400 urine dipstick analyzer. We evaluated data obtained from urine dipstick analyzer, UF-1000i and combination of UF-1000i with urine dipstick analyzer and the results was compared with those obtained from quantitative bacterial culture. Then we evaluated the sensibility, specificity, positive predictive value (PPV), negative predictive value (NPV) and accuracy. Results Among the 148 patients with UTI, the positive rate of the quantitative bacterial culture was 73.6% (109/148), the positive rate of LEU and NIT detected by dipstick test 26. 4% (39/148).There was significantly statistical difference between bacterial culture and strip test(χ2 = 55.68 ,P < 0. 05 ). The positive rate of urine flow cytometry by UF-1000i with either positive of BACT and WBC was 91.2%(135/148), which was higher than the positive rate of the quantitative bacterial culture. There was significant difference between two methods (χ2 = 14. 70, P < 0. 05 ). The positive rate of anyone positive among BACT, WBC, LEU and NIT was 94. 6% (140/148) when detected with combination of dipstick test and UF-1000i, which was higher than the positive rate of the quantitative bacterial culture. And there was significant difference between two methods (χ2 = 20. 45, P < 0. 05 ). The sensitivity of dipstick test was low (26. 4% ,39/148 ), and specificity was high ( 99. 3%, 282/284 ) . The sensitivity, specificity, positive predictive value, negative predictive value of BACT detected by UF-1000i in diagnosing urinary tract infection were 92. 6% ( 137/148 ), 39. 8% ( 113/284 ). 44. 5% ( 137/308 ) and 91.1% ( 113/124 ), respectively. If the dipstick test was combined with UF-1000i, the sensitivity, negative predictive value, specificity, positive predictive value and accuracy were 98.0% ( 145/148 ), 97.1% ( 100/103 ). 35.2% (100/284) ,44. 1% (145/329) and 56. 7% (245/432), respectively. Conclusions The combination of urine dipstick test and automated urine formed elements analyzer UF-1000i plays an important role in early diagnosis of UTI. And it has significant value in diagnosis of UTI, especially for the patients with negative bacterial cultures of urine sample. 相似文献
7.
目的建立一种新的不开胸深低温停循环(DHCA)兔模型,研究DHCA对。肾脏的损伤及早期检测指标。方法以体重3.5~4.0kg新西兰大耳兔(雌雄不拘)42只分为两组,每组各21只:两组均于右颈动静脉插管建立体外循环,A组肛温维持在28℃持续体外循环,B组肛温降至16~18℃时停循环,停循环60min后开放循环复温,在30min内复温至肛温35℃,之后维持体外循环30min,两组体外循环时间相同。在术前、术后6h、24h及48h分别采集静脉血检测血清肌酐(Cr)、p.痕迹蛋白(p.TP)、采集尿样本行尿中性粒细胞明胶酶相关脂质运载蛋白(NGAL)值检测。两组分别在术前、术后6h、24h及48h处死动物各4只,留取肾脏组织分别检测丙二醛(MDA)含量、HE染色和凋亡指标(TUNEL)染色以及透射电子显微镜观察。肾小管上皮细胞形态改变。结果A组围术期死亡4只,B组围术期死亡5只。(1)血清cr值:A组组内各时间点之间差异无统计学意义(P〉0.05),B组在术后24h与组内及A组间比较明显升高(P〈0.05)。(2)血D.TP及尿NGAL值:A组组内各时间点之间差异无统计学意义(P〉0.05)。B组内术后6h、24h、48h与术前比较明显升高(P〈0.05),B组在术后24h与组内其它时间点比较明显升高(P〈0.05)。B组术后6h、24h、48h与A组比较明显升高(P〈0.05)。(3)。肾组织丙二醛(MDA)含量:B组在术后24h与组内及组间比较明显升高(P〈0.05)。(4)HE染色可见B组在术后24h肾小管上皮细胞病理损伤明显,A组在术后24h。肾小管上皮细胞病理无明显改变。(5)TUNEL染色阳性率:B组在术后24h与组内及组间比较明显升高(P〈0.05)。(6)电子显微镜观察可见B组在术后24h。肾小管上皮细胞内细胞器病理损伤明显,A组肾小管上皮内细胞器病理变化不明显。结论不开胸DHCA兔模型对于研究DHCA造成的器官损伤是一种简单、方便、经济且能够长期生存的动物模型。在DHCA手术后24h肾损伤最严重,血D—TP和尿NGAL是DHCA肾损伤的早期检测指标。 相似文献
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9.
尿路感染是临床常见病和多发病,同时也是最常见的医院获得性感染.尿路感染的临床表现多样,症状不典型,白细胞尿和菌尿的检出是其筛检和确诊的重要指标.本文结合尿路感染的发病机制、诊断标准,对尿中白细胞和细菌检验项目和技术的临床意义及应用评价做了简要概述. 相似文献
10.