Clinical and diagnostic laboratory immunology最新文献

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Immunogenicity of meningococcal ACYW135 polysaccharide vaccine in Saudi children 5 to 9 years of age. 脑膜炎球菌ACYW135多糖疫苗在沙特5 ~ 9岁儿童中的免疫原性
Clinical and diagnostic laboratory immunology Pub Date : 2005-10-01 DOI: 10.1128/CDLI.12.10.1251-1253.2005
M Khalil, Y Al-Mazrou, P Balmer, J Bramwell, N Andrews, R Borrow
{"title":"Immunogenicity of meningococcal ACYW135 polysaccharide vaccine in Saudi children 5 to 9 years of age.","authors":"M Khalil,&nbsp;Y Al-Mazrou,&nbsp;P Balmer,&nbsp;J Bramwell,&nbsp;N Andrews,&nbsp;R Borrow","doi":"10.1128/CDLI.12.10.1251-1253.2005","DOIUrl":"https://doi.org/10.1128/CDLI.12.10.1251-1253.2005","url":null,"abstract":"<p><p>Meningococcal tetravalent polysaccharide vaccines were observed to be immunogenic in Saudi children 5 to 9 years of age, with >90% having serum bactericidal antibody titers of > or = 8 for serogroups A, Y, and W135; for serogroup C, 77% were putatively protected after vaccination.</p>","PeriodicalId":72602,"journal":{"name":"Clinical and diagnostic laboratory immunology","volume":"12 10","pages":"1251-3"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1128/CDLI.12.10.1251-1253.2005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25624940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Serologic cross-reactivity between Anaplasma marginale and Anaplasma phagocytophilum. 边缘无原体与嗜吞噬细胞无原体的血清学交叉反应性。
Clinical and diagnostic laboratory immunology Pub Date : 2005-10-01 DOI: 10.1128/CDLI.12.10.1177-1183.2005
U M Dreher, J de la Fuente, R Hofmann-Lehmann, M L Meli, N Pusterla, K M Kocan, Z Woldehiwet, U Braun, G Regula, K D C Staerk, H Lutz
{"title":"Serologic cross-reactivity between Anaplasma marginale and Anaplasma phagocytophilum.","authors":"U M Dreher,&nbsp;J de la Fuente,&nbsp;R Hofmann-Lehmann,&nbsp;M L Meli,&nbsp;N Pusterla,&nbsp;K M Kocan,&nbsp;Z Woldehiwet,&nbsp;U Braun,&nbsp;G Regula,&nbsp;K D C Staerk,&nbsp;H Lutz","doi":"10.1128/CDLI.12.10.1177-1183.2005","DOIUrl":"https://doi.org/10.1128/CDLI.12.10.1177-1183.2005","url":null,"abstract":"<p><p>In the context of a serosurvey conducted on the Anaplasma marginale prevalence in Swiss cattle, we suspected that a serological cross-reactivity between A. marginale and A. phagocytophilum might exist. In the present study we demonstrate that cattle, sheep and horses experimentally infected with A. phagocytophilum not only develop antibodies to A. phagocytophilum (detected by immunofluorescent-antibody assay) but also to A. marginale (detected by a competitive enzyme-linked immunosorbent assay). Conversely, calves experimentally infected with A. marginale also developed antibodies to A. phagocytophilum using the same serological tests. The identity of 63% determined in silico within a 209-amino-acid sequence of major surface protein 5 of an isolate of A. marginale and one of A. phagocytophilum supported the observed immunological cross-reactivity. These observations have important consequences for the serotesting of both, A. marginale and A. phagocytophilum infection of several animal species. In view of these new findings, tests that have been considered specific for either infection must be interpreted carefully.</p>","PeriodicalId":72602,"journal":{"name":"Clinical and diagnostic laboratory immunology","volume":"12 10","pages":"1177-83"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1128/CDLI.12.10.1177-1183.2005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25626167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 102
37-Kilodalton/83-kilodalton RNase L isoform ratio in peripheral blood mononuclear cells: analytical performance and relevance for chronic fatigue syndrome. 外周血单核细胞37-千道尔顿/83千道尔顿RNase L异构体比值:分析性能及其与慢性疲劳综合征的相关性
Clinical and diagnostic laboratory immunology Pub Date : 2005-10-01 DOI: 10.1128/CDLI.12.10.1259-1260.2005
Marc Frémont, Freya Vaeyens, C Vincent Herst, Kenny De Meirleir, Patrick Englebienne
{"title":"37-Kilodalton/83-kilodalton RNase L isoform ratio in peripheral blood mononuclear cells: analytical performance and relevance for chronic fatigue syndrome.","authors":"Marc Frémont,&nbsp;Freya Vaeyens,&nbsp;C Vincent Herst,&nbsp;Kenny De Meirleir,&nbsp;Patrick Englebienne","doi":"10.1128/CDLI.12.10.1259-1260.2005","DOIUrl":"https://doi.org/10.1128/CDLI.12.10.1259-1260.2005","url":null,"abstract":"A French group has reported results (5) supporting the use of the RNase L 37-kDa/83-kDa ratio (37/83 R) in peripheral blood mononuclear cells (PBMC) as a diagnostic test for chronic fatigue syndrome (CFS). More recently (6), the same group cautioned about the diagnostic value of the 37/83 R, based on a small patient follow-up study which was likely to indicate analytical variability among duplicate assays, lack of reproducibility over time, and a weak correlation with the multidimensional fatigue inventory (MFI) score. Because of our long-term experience with this assay, we would like to offer some comments. First, we tested the analytical performance of the 37/83 R assay according to CLSI (formerly NCCLS) procedure EP5-A (4), with control samples at three different levels made of extracts of the monocytic U937 cell line spiked with various concentrations of recombinant RNase L. The guideline protocol involves assaying the samples in duplicate twice daily over a total period of 20 days. The results summarized in Table 1 indicate that both within- and between-run variation does not exceed 13%. In another series of experiments, we assayed eight patient samples in duplicate (average 37/83 R ranging from 0.5 to 245). Although in accordance with the NCCLS protocol results, the variation did not exceed 12% for samples with 37/83 R levels up to 20, and it rose significantly to 30% and more for samples with 37/83 R levels above 20. This should be expected, because beyond this level, more than 70% of the 83-kDa isoform is cleaved, and consequently, the faint 83-kDa band is difficult to scan with accuracy. Thus, in our opinion, the lower level of correlation between the duplicate assay results observed with the CFS group versus those with the controls (6) reflects the prevalence of high 37/83 R levels in the CFS group rather than a low test reproducibility as claimed by these authors. This is further supported by the good correlation found for the control group (r 0.95). During validation, the lowest detectable ratio measured with a sample containing the 83kDa isoform only was estimated (3 independent experiments with 26 replicates each) to be 0.13 0.06 (average three standard deviations). Thus, the clinical cutoff ratio of 0.4 found by the authors (5, 6) to best discriminate CFS patients from controls falls within the measurable range. Second, although long-term unexplained fatigue is a hallmark symptom, CFS is a complex clinical condition, and other important symptoms reflect an exacerbated inflammatory response. Because the inflammatory protease elastase has been shown to be responsible for the cleavage of 83-kDa RNase L into the 37-kDa isoform (2), one would expect the 37/83 R assay to reflect inflammatory activity in the immune system. In a recent study, we compared the 37/83 R with human leukocyte elastase activity (Molecular Probes kit) with 52 CFS PBMC samples. The correlation was highly significant (r 2 0.76; P 0.001), supporting this proposal. In","PeriodicalId":72602,"journal":{"name":"Clinical and diagnostic laboratory immunology","volume":"12 10","pages":"1259-60; author reply 1260"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1128/CDLI.12.10.1259-1260.2005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25644717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Priming of immunological memory by pneumococcal conjugate vaccine in children unresponsive to 23-valent polysaccharide pneumococcal vaccine. 对 23 价肺炎球菌多糖疫苗无反应的儿童接种肺炎球菌结合疫苗后产生的免疫记忆。
Clinical and diagnostic laboratory immunology Pub Date : 2005-10-01 DOI: 10.1128/CDLI.12.10.1216-1222.2005
Markus A Rose, Ralf Schubert, Nicola Strnad, Stefan Zielen
{"title":"Priming of immunological memory by pneumococcal conjugate vaccine in children unresponsive to 23-valent polysaccharide pneumococcal vaccine.","authors":"Markus A Rose, Ralf Schubert, Nicola Strnad, Stefan Zielen","doi":"10.1128/CDLI.12.10.1216-1222.2005","DOIUrl":"10.1128/CDLI.12.10.1216-1222.2005","url":null,"abstract":"<p><p>Pneumococcal polysaccharide vaccine (PPV) is of limited immunogenicity in infants and immunocompromised patients. Our prospective randomized controlled trial investigated whether priming with pneumococcal conjugate vaccine (PCV) induced specific immunological memory in previously nonresponders to PPV. Of a total of 33 children (2 to 18 years) with polysaccharide-specific immunodeficiency (PSI), group A (n = 16) received two doses of 7-valent PCV in a 4- to 6-week interval, and a booster dose of 23-valent PPV after one year. Group B (n = 17) received two doses of PPV in a 1-year interval exclusively. Specific antibody concentrations for serotypes 4, 5, 6B, 9V, 14, 18C, 19F, and 23F were determined (enzyme-linked immunosorbent assay) before and at 7 and 28 days after administration of the PPV booster and compared to an opsonophagocytosis assay. Of group A, 64 to 100% had antibody concentrations of > or = 1 microg/ml on day 28 after the booster versus 25 to 94% of group B. Group A had significantly higher antibody concentrations for all PCV-containing serotypes already on day 7, indicating early memory response. Antibody concentrations were in accordance with functional opsonic activity, although opsonic titers varied among individuals. Pneumococcal vaccination was well tolerated. The incidence of airway infections was reduced after priming with PCV (10/year for group A versus 15/year for group B). Following a PPV booster, even patients primarily not responding to PPV showed a rapid and more pronounced memory response after priming with PCV.</p>","PeriodicalId":72602,"journal":{"name":"Clinical and diagnostic laboratory immunology","volume":"12 10","pages":"1216-22"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1247826/pdf/0144-05.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25624933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Clonal diversity and turnover of Streptococcus mitis bv. 1 on shedding and nonshedding oral surfaces of human infants during the first year of life. 猪链球菌克隆多样性与周转。人类婴儿在生命的第一年口腔表面脱落和非脱落。
Clinical and diagnostic laboratory immunology Pub Date : 2005-10-01 DOI: 10.1128/CDLI.12.10.1184-1190.2005
Jennifer L Kirchherr, George H Bowden, Dorothy A Richmond, Michael J Sheridan, Katherine A Wirth, Michael F Cole
{"title":"Clonal diversity and turnover of Streptococcus mitis bv. 1 on shedding and nonshedding oral surfaces of human infants during the first year of life.","authors":"Jennifer L Kirchherr,&nbsp;George H Bowden,&nbsp;Dorothy A Richmond,&nbsp;Michael J Sheridan,&nbsp;Katherine A Wirth,&nbsp;Michael F Cole","doi":"10.1128/CDLI.12.10.1184-1190.2005","DOIUrl":"https://doi.org/10.1128/CDLI.12.10.1184-1190.2005","url":null,"abstract":"<p><p>Streptococcus mitis bv. 1 is a pioneer colonizer of the human oral cavity. Studies of its population dynamics within parents and their infants and within neonates have shown extensive diversity within and between subjects. We examined the genetic diversity and clonal turnover of S. mitis bv. 1 isolated from the cheeks, tongue, and primary incisors of four infants from birth to 1 year of age. In addition, we compared the clonotypes of S. mitis bv. 1 isolated from their mothers' saliva collected in parallel to determine whether the mother was the origin of the clones colonizing her infant. Of 859 isolates obtained from the infants, 568 were unique clones. Each of the surfaces examined, whether shedding or nonshedding, displayed the same degree of diversity. Among the four infants it was rare to detect the same clone colonizing more than one surface at a given visit. There was little evidence for persistence of clones, but when clones were isolated on multiple visits they were not always found on the same surface. A similar degree of clonal diversity of S. mitis bv. 1 was observed in the mothers' saliva as in their infants' mouths. Clones common to both infant and mothers' saliva were found infrequently suggesting that this is not the origin of the infants' clones. It is unclear whether mucosal immunity exerts the environmental pressure driving the genetic diversity and clonal turnover of S. mitis bv. 1, which may be mechanisms employed by this bacterium to evade immune elimination.</p>","PeriodicalId":72602,"journal":{"name":"Clinical and diagnostic laboratory immunology","volume":"12 10","pages":"1184-90"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1128/CDLI.12.10.1184-1190.2005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25626168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Immunoglobulin A antibody responses in dengue patients: a useful marker for serodiagnosis of dengue virus infection. 登革热患者免疫球蛋白A抗体反应:登革热病毒感染血清诊断的有用标记。
Clinical and diagnostic laboratory immunology Pub Date : 2005-10-01 DOI: 10.1128/CDLI.12.10.1235-1237.2005
M Nawa, T Takasaki, M Ito, S Inoue, K Morita, I Kurane
{"title":"Immunoglobulin A antibody responses in dengue patients: a useful marker for serodiagnosis of dengue virus infection.","authors":"M Nawa,&nbsp;T Takasaki,&nbsp;M Ito,&nbsp;S Inoue,&nbsp;K Morita,&nbsp;I Kurane","doi":"10.1128/CDLI.12.10.1235-1237.2005","DOIUrl":"https://doi.org/10.1128/CDLI.12.10.1235-1237.2005","url":null,"abstract":"<p><p>We determined the usefulness of an immunoglobulin A (IgA) antibody-capture enzyme-linked immunosorbent assay for serodiagnosis of dengue virus infections. The results indicate that the presence of IgA and IgM in serum samples assures recent primary dengue virus infection even with a single serum sample.</p>","PeriodicalId":72602,"journal":{"name":"Clinical and diagnostic laboratory immunology","volume":"12 10","pages":"1235-7"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1128/CDLI.12.10.1235-1237.2005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25624936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 27
Development of a microsphere-based serologic multiplexed fluorescent immunoassay and a reverse transcriptase PCR assay to detect murine norovirus 1 infection in mice. 建立基于微球的血清学多重荧光免疫检测和逆转录酶PCR检测小鼠诺如病毒1型感染。
Clinical and diagnostic laboratory immunology Pub Date : 2005-10-01 DOI: 10.1128/CDLI.12.10.1145-1151.2005
Charlie C Hsu, Christiane E Wobus, Earl K Steffen, Lela K Riley, Robert S Livingston
{"title":"Development of a microsphere-based serologic multiplexed fluorescent immunoassay and a reverse transcriptase PCR assay to detect murine norovirus 1 infection in mice.","authors":"Charlie C Hsu,&nbsp;Christiane E Wobus,&nbsp;Earl K Steffen,&nbsp;Lela K Riley,&nbsp;Robert S Livingston","doi":"10.1128/CDLI.12.10.1145-1151.2005","DOIUrl":"https://doi.org/10.1128/CDLI.12.10.1145-1151.2005","url":null,"abstract":"<p><p>Murine norovirus 1 (MNV-1) is a newly recognized pathogen of mice that causes lethal infection in mice deficient in components of the innate immune response but not in wild-type 129 mice. In this study, in vitro-propagated MNV-1 was used as antigen to develop a multiplexed fluorescent immunoassay (MFI) to detect antibodies to MNV-1 in infected mice. The MNV-1 MFI was 100% specific and 100% sensitive in detecting anti-MNV-1 antibody in sera from experimentally infected mice. Testing of a large number of mouse serum samples (n = 12,639) submitted from contemporary laboratory mouse colonies in the United States and Canada revealed that 22.1% of these sera contained antibodies to MNV-1, indicating infection with MNV-1 is widespread in research mice. In addition, a reverse transcriptase PCR primer pair with a sensitivity of 25 virus copies was developed and used to demonstrate that MNV-1 RNA could be detected in the spleen, mesenteric lymph node, and jejunum from some experimentally infected mice 5 weeks postinoculation. These diagnostic assays provide the necessary tools to define the MNV-1 infection status of research mice and to aid in the establishment of laboratory mouse colonies free of MNV-1 infection.</p>","PeriodicalId":72602,"journal":{"name":"Clinical and diagnostic laboratory immunology","volume":"12 10","pages":"1145-51"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1128/CDLI.12.10.1145-1151.2005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25625640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 147
Cryptococcus neoformans-reactive and total immunoglobulin profiles of human immunodeficiency virus-infected and uninfected Ugandans. 感染人类免疫缺陷病毒和未感染人类免疫缺陷病毒的乌干达人的新型隐球菌反应和总免疫球蛋白概况。
Clinical and diagnostic laboratory immunology Pub Date : 2005-10-01 DOI: 10.1128/CDLI.12.10.1168-1176.2005
Krishanthi Subramaniam, Neil French, Liise-Anne Pirofski
{"title":"Cryptococcus neoformans-reactive and total immunoglobulin profiles of human immunodeficiency virus-infected and uninfected Ugandans.","authors":"Krishanthi Subramaniam, Neil French, Liise-Anne Pirofski","doi":"10.1128/CDLI.12.10.1168-1176.2005","DOIUrl":"10.1128/CDLI.12.10.1168-1176.2005","url":null,"abstract":"<p><p>We determined total and Cryptococcus neoformans glucuronoxylomannan (GXM)-reactive antibody repertoires of human immunodeficiency virus (HIV)-infected and HIV-uninfected Ugandans in a retrospective, case-control study of participants in a randomized controlled trial of pneumococcal vaccination. The study included 192 adults: 48 who subsequently developed cryptococcal meningitis (CM); (HIV+ CM+); 2 individuals who matched them in CD4+ T-cell level, stage of HIV disease, and age but did not develop CM (HIV+ CM-); and 48 HIV-uninfected individuals. Total serum immunoglobulin concentrations and titers of immunoglobulin M (IgM), IgG, and IgA to GXM, pneumococcal polysaccharides, and antibodies expressing certain V(H)3 idiotypes were determined with banked sera obtained before the development of cryptococcosis for HIV+ CM+ subjects. The results showed that HIV-infected subjects had significantly lower levels of IgM to GXM but higher levels of total immunoglobulin and IgG and IgA to GXM than those of HIV-uninfected subjects. HIV-infected subjects with a history of pneumonia had higher levels, and those with a history of herpes zoster had lower levels of GXM-binding antibodies than subjects with no history of either disease. Minimal to no cross-reactivity was demonstrated between antibodies to GXM and polysaccharides in a pneumococcal vaccine. No significant differences between the antibody repertoires of HIV+ CM+ and HIV+ CM- subjects were identified, but among subjects without a history of pneumonia, there was a trend towards lower V(H)3-positive antibody levels among HIV+ CM+ than among HIV+ CM- subjects. Our findings demonstrate an association between previous infectious diseases and differences in the total and GXM-reactive antibody repertoires of HIV-infected subjects and suggest the question of whether certain microbes modulate subsequent antibody responses to GXM deserves further study.</p>","PeriodicalId":72602,"journal":{"name":"Clinical and diagnostic laboratory immunology","volume":"12 10","pages":"1168-76"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1247824/pdf/0123-05.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25626166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Potential of direct agglutination test based on promastigote and amastigote antigens for serodiagnosis of post-kala-azar dermal leishmaniasis. 基于promastigote和amastigote抗原的直接凝集试验在黑热病后皮肤利什曼病血清诊断中的潜力。
Clinical and diagnostic laboratory immunology Pub Date : 2005-10-01 DOI: 10.1128/CDLI.12.10.1191-1194.2005
Ruchi Singh, B V Subba Raju, R K Jain, Poonam Salotra
{"title":"Potential of direct agglutination test based on promastigote and amastigote antigens for serodiagnosis of post-kala-azar dermal leishmaniasis.","authors":"Ruchi Singh,&nbsp;B V Subba Raju,&nbsp;R K Jain,&nbsp;Poonam Salotra","doi":"10.1128/CDLI.12.10.1191-1194.2005","DOIUrl":"https://doi.org/10.1128/CDLI.12.10.1191-1194.2005","url":null,"abstract":"<p><p>Post-kala-azar dermal leishmaniasis (PKDL) is a dermal complication, a sequel to kala-azar. Diagnosis of PKDL presents a challenge due to the low parasite burden in the lesions. The direct agglutination test (DAT) based on promastigote and amastigote antigens of Leishmania donovani of indigenous isolates was developed to diagnose PKDL, and the results were compared with those of the rk39 strip test. The sensitivities of DAT for antileishmanial antibody detection, based on promastigote and amastigote antigens at a cutoff titer of 1:800 were 98.5% and 100%, respectively, with corresponding specificities of 96.5% and 100%. DAT could correctly detect 100% polymorphic cases and 95.4% macular PKDL cases. In comparison, the rk39 strip test was able to correctly diagnose 95.6% of polymorphic and 86.0% macular PKDL cases. DAT based on axenic amastigote antigen provided 100% sensitivity and specificity, making it particularly useful for macular PKDL cases, which are often missed by the rk39 strip test. Thus, DAT provides a simple, reliable, and inexpensive test for PKDL diagnosis with potential applicability in field conditions.</p>","PeriodicalId":72602,"journal":{"name":"Clinical and diagnostic laboratory immunology","volume":"12 10","pages":"1191-4"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1128/CDLI.12.10.1191-1194.2005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25626169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 22
Evaluation of LIAISON Treponema Screen, a novel recombinant antigen-based chemiluminescence immunoassay for laboratory diagnosis of syphilis. 评估用于梅毒实验室诊断的新型重组抗原化学发光免疫测定 LIAISON Treponema Screen。
Clinical and diagnostic laboratory immunology Pub Date : 2005-10-01 DOI: 10.1128/CDLI.12.10.1231-1234.2005
Antonella Marangoni, Vittorio Sambri, Silvia Accardo, Francesca Cavrini, Antonietta D'Antuono, Alessandra Moroni, Elisa Storni, Roberto Cevenini
{"title":"Evaluation of LIAISON Treponema Screen, a novel recombinant antigen-based chemiluminescence immunoassay for laboratory diagnosis of syphilis.","authors":"Antonella Marangoni, Vittorio Sambri, Silvia Accardo, Francesca Cavrini, Antonietta D'Antuono, Alessandra Moroni, Elisa Storni, Roberto Cevenini","doi":"10.1128/CDLI.12.10.1231-1234.2005","DOIUrl":"10.1128/CDLI.12.10.1231-1234.2005","url":null,"abstract":"<p><p>The purpose of this study was to evaluate the diagnostic performance of LIAISON Treponema Screen (DiaSorin, Saluggia, Italy), a new automated chemiluminescence immunoassay (CLIA), in comparison with that of rapid plasma reagin (RPR) and the following currently used treponemal tests: hemagglutination test (TPHA), immunoenzymatic assay (EIA), and Western blot (WB). First, a retrospective study was performed with a panel of 2,494 blood donor sera, a panel of 131 clinical and serologically characterized syphilitic sera, and 96 samples obtained from subjects with potentially interfering diseases or conditions. A prospective study was also performed by testing 1,800 unselected samples submitted to the Microbiology Laboratory of the St. Orsola Hospital in Bologna, Italy, for routine screening for syphilis. As expected, RPR was the least specific method, especially when potentially cross-reacting sera were tested. On the contrary, all of the treponemal tests proved to be very specific (99.9%) and they performed with the following sensitivities: 100% (WB), 99.2% (CLIA), 95.4% (EIA), and 94.7% (TPHA).</p>","PeriodicalId":72602,"journal":{"name":"Clinical and diagnostic laboratory immunology","volume":"12 10","pages":"1231-4"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1247834/pdf/0171-05.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25624935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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