Abstract:
:The coagulation of Limulus amebocyte lysate (LAL) can be activated through two pathways, one initiated by endotoxin and the other by beta-glucans. The two pathways join at the step of activation of the proclotting enzyme. We report here that the endotoxin-activated pathway can be differentially inhibited by two methods in a Limulus enzyme-linked immunosorbent assay (ELISA), either by the combined use of dimethyl sulfoxide and polymyxin B or by a monoclonal antibody against Limulus factor C. LAL reactivities to 10 different endotoxin preparations could be inhibited by the former method by a factor of 10(4) to 10(6) and could be blocked almost totally by the latter method, irrespective of the source of endotoxin. The sensitivity of the assay was approximately 50 pg/ml both for curdlan from Alcaligenes faecalis and for laminarin from Laminaria digitata. We also found that the beta-glucan-activated pathway could be totally blocked by laminarin (> 1 microgram/ml) without affecting the endotoxin-activated pathway, allowing endotoxin to be quantitated specifically by the Limulus ELISA with a detection limit of 0.005 endotoxin unit per ml. The use of uninhibited and differentially inhibited ELISAs demonstrated that different LAL preparations showed much greater variation in assaying beta-glucans than in assaying endotoxins. The LAL reactivity of normal human plasma was found to be due to the activation of the beta-glucan pathway, but not the endotoxin pathway, of LAL.
journal_name
J Clin Microbioljournal_title
Journal of clinical microbiologyauthors
Zhang GH,Baek L,Buchardt O,Koch Cdoi
10.1128/JCM.32.6.1537-1541.1994subject
Has Abstractpub_date
1994-06-01 00:00:00pages
1537-41issue
6eissn
0095-1137issn
1098-660Xjournal_volume
32pub_type
杂志文章abstract::Group B streptococci (GBS) cause severe invasive disease in both neonates and adults. Understanding the epidemiology of GBS provides information that can include determining disease prevalence rates in defined populations and geographic regions, documenting the success of GBS screening programs, and understanding anti...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00355-16
更新日期:2016-07-01 00:00:00
abstract::One of the most common diseases in high-performance German Holstein dairy cows is left-sided displacement of the abomasum (LDA). Hypomotility of the abomasum is detrimental during the pathogenesis of LDA. It is known that improper interactions between the gut microbiota and the enteric nervous system contribute to dys...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02442-15
更新日期:2016-04-01 00:00:00
abstract::Cultures of Sporothrix schenckii were serologically tested by the exoantigen immunodiffusion technique of Kaufman and Standard (L. Kaufman and P.G. Standard, J. Clin. Microbiol. 8:42-45, 1978). This rapid and sensitive technique permitted the identification of 10 isolates of S. schenckii within 3 days. The production ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.15.3.362-365.1982
更新日期:1982-03-01 00:00:00
abstract::Shotgun proteomics using liquid chromatography-tandem mass spectrometry (LC-MS/MS) was applied to detect β-lactamases in clinical Acinetobacter baumannii isolates. The correlation of the detection of β-lactamase proteins (rather than PCR detection of the corresponding genes) with the resistance phenotypes demonstrated...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00620-15
更新日期:2015-06-01 00:00:00
abstract::A premarket trial of the Becton Dickinson Directigen respiratory syncytial virus membrane-based enzyme immunoassay compared the test with virus isolation for the detection of respiratory syncytial virus in 583 nasopharyngeal aspirates. After modification, the Directigen test showed a sensitivity of 83% and a specifici...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.28.6.1458-1459.1990
更新日期:1990-06-01 00:00:00
abstract::Current methods for the diagnosis of melioidosis are based on bacteriological culture. A number of serological tests currently available lack specificity and sensitivity. This is largely due to the use of crude antigens which results in a significant cross-reactivity with sera from individuals infected with other bact...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.31.5.1232-1236.1993
更新日期:1993-05-01 00:00:00
abstract::Ten clinical yeast isolates submitted to the Centers for Disease Control from diverse geographic areas were identified as Candida ciferrii and Candida chiropterorum. The association of C. ciferrii with clinical specimens, particularly its repeated isolation from a case of onychomycosis, suggests that this species may ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.18.5.1252-1255.1983
更新日期:1983-11-01 00:00:00
abstract::Cryptococcus gattii emerged in 1999 in a distinct ecologic environment on Vancouver Island, Canada. Estimates of incubation period were derived from an analysis of travelers with discreet exposures to this region. Individual case incubation periods ranged from 2 to 11 months, with a median of 6 to 7 months. ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.44.5.1851-1852.2006
更新日期:2006-05-01 00:00:00
abstract::Bordetella pertussis was transmitted from an immunized boy to his father and possibly to other family members. This case report demonstrates that although unusual, acute adult B. pertussis infection can occur. B. pertussis immunization may not prevent infection but can reduce the severity. B. pertussis was detected in...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.34.2.429-430.1996
更新日期:1996-02-01 00:00:00
abstract::The usefulness of pneumococcal urinary antigen tests (UATs) in severe pneumococcal infection relies heavily on the performance in bacteremic patients. Fluorescence technology and automatic reading of test results may improve UAT performance. We evaluated the automatically read Sofia S. pneumoniae FIA for diagnosing pn...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01535-18
更新日期:2019-07-26 00:00:00
abstract::The herpes simplex virus type 1 (HSV-1) genome is a linear double-stranded DNA of 152 kpb. It is divided into long and short regions of unique sequences termed U(L) and U(S), respectively, and these are flanked by regions of inverted internal and terminal repeats. Microsatellites are short tandem repeats of 1- to 6-nu...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01565-08
更新日期:2009-03-01 00:00:00
abstract::We describe here the use of an immunomagnetic separation enrichment process coupled with a modified real-time cellular analysis (RTCA) system (RTCA version 2) for the detection of C. difficile toxin (CDT) in stool. The limit of CDT detection by RTCA version 2 was 0.12 ng/ml. Among the consecutively collected 401 diarr...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02601-13
更新日期:2014-04-01 00:00:00
abstract::RNA of the newly identified human metapneumovirus (HMPV) was detected in nasopharyngeal aspirates of 11 of 63 (17.5%) young children with respiratory tract disease. Markers of infection caused by another member of the Pneumovirinae subfamily of the family Paramyxoviridae, respiratory syncytial virus (RSV), were identi...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/jcm.41.7.3043-3045.2003
更新日期:2003-07-01 00:00:00
abstract::Anthopsis deltoidea was found to be the cause of an olecranon bursitis in a 79-year-old golfer. Serial histological sections of the olecranon bursa showed faintly stained, brown-walled, septate, hyphal elements in the centers of the necrotic debris. The combination of bursectomy and flucytosine treatment cured the inf...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.20.2.271-273.1984
更新日期:1984-08-01 00:00:00
abstract::We analyzed data of 263 women with at least one genital or anorectal sexually transmitted infection from a cross-sectional study conducted in rural South Africa. We provide new insights concerning the concurrence of Chlamydia trachomatis, Neisseria gonorrhoeae, Mycoplasma genitalium, and Trichomonas vaginalis infectio...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02848-15
更新日期:2016-01-01 00:00:00
abstract::The correlation between response to antiviral therapy and pretreatment viral load in patients with chronic hepatitis C has prompted the development of quantitative assays to measure viral load. The aim of our study was to assess the clinical relevance of the newly developed semiautomated PCR system COBAS HCV MONITOR v...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.38.7.2722-2725.2000
更新日期:2000-07-01 00:00:00
abstract::Fifty-three isolates of Streptococcus uberis from various sources were examined for the presence of a common antigen. Initially, a serum was produced in rabbits which, by using rocket line immunoelectrophoresis, proved to react with identity to all of the S. uberis crude extracts as well as group B and E streptococcal...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.17.5.892-897.1983
更新日期:1983-05-01 00:00:00
abstract::Lymphadenopathy (LN) is the most common clinical manifestation of acute acquired toxoplasma infection in humans. The diagnosis of toxoplasmic lymphadenitis (TL) is established by serological methods and/or lymph node biopsy. In the United States, the differential agglutination (of acetone [AC]-fixed versus that of for...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01781-06
更新日期:2007-05-01 00:00:00
abstract::Febrile travelers from countries with unique endemic pathogens pose a significant diagnostic challenge. In this report, we describe the case of a Tongan man presenting with fever, rash, and altered mental status. The diagnosis of Chikungunya encephalitis was made using a laboratory-developed real-time RT-PCR and serol...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01288-14
更新日期:2014-09-01 00:00:00
abstract::The Kodak SureCell Herpes Test Kit (SC-HSV) was evaluated in a high-risk sexually transmitted disease clinic population. A total of 97 lesion specimens (from 94 patients) were tested for the presence of herpes simplex virus by SC-HSV and by spin-amplified tissue culture confirmed by an enzyme immunoassay. The overall ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.28.9.2117-2119.1990
更新日期:1990-09-01 00:00:00
abstract::Pasteurella species are part of the oral flora of cats and dogs. In humans, they are frequently found in infected animal bite wounds, but invasive infections are rare. This is the first report of prosthetic-valve endocarditis with a Pasteurella dagmatis-like species, which originated from the patient's cat. ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00973-12
更新日期:2012-08-01 00:00:00
abstract::The hydrolysis of esculin in the presence of bile has been utilized for many years for the identification of bacteria. It is especially useful in differentiating species of the genus Streptococcus. The procedure is a two-step one. First, the bacterium must grow in a particular concentration of bile, and second, it mus...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.21.3.363-365.1985
更新日期:1985-03-01 00:00:00
abstract::Two high-copy-number insertion sequences, IS2404 and IS2606, were recently identified in Mycobacterium ulcerans and were shown by Southern hybridization to possess restriction fragment length polymorphism between strains from different geographic origins. We have designed a simple genotyping method that captures these...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.38.4.1482-1487.2000
更新日期:2000-04-01 00:00:00
abstract::High-performance liquid chromatography was evaluated as a rapid means of identifying obligately anaerobic gram-positive cocci of medical interest. Isolates were inoculated into a defined chemical medium consisting primarily of amino acids and were incubated aerobically for 1 h at 35 degrees C. After removal of organis...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.25.6.996-1001.1987
更新日期:1987-06-01 00:00:00
abstract::During 1984, the recovery of enteric pathogens from patients with acute diarrhea was enhanced by the use of both rectal swab and stool specimens. With 513 patients for whom both methods were used, the overall recovery rate was increased a minimum of about 10%. Almost 50% of the organisms recovered were detected by onl...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.25.1.158-159.1987
更新日期:1987-01-01 00:00:00
abstract::Blood was cultured in two vacuum bottles containing Columbia broth. Filtered air was admitted to one bottle (aerobic); the unvented bottle was considered anaerobic. Cultures were incubated at 35 C until growth occurred or for at least 7 days. Of 744 organisms isolated, 50% were isolated from both bottles, 30% from the...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.1.2.154-156.1975
更新日期:1975-02-01 00:00:00
abstract::Microagglutination and micro-enzyme-linked immunosorbent assay (ELISA) tests with easily prepared, safe, heat-killed antigens for detecting antibodies to the legionnaires disease organism have been developed. A safranin-stained whole-cell antigen is used in the microagglutination test, and a simply prepared soluble an...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:
更新日期:1978-04-01 00:00:00
abstract::Community-acquired bloodstream infections cause substantial morbidity and mortality worldwide, but microbiology capacity and surveillance limitations have challenged good descriptions of pathogen distribution in many regions, including Southeast Asia. Active surveillance for bloodstream infections has been conducted i...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02008-14
更新日期:2015-03-01 00:00:00
abstract::Subgroup J avian leukosis virus (ALV-J) is an avian retrovirus that causes severe economic losses in the poultry industry. The early identification and removal of virus-shedding birds are important to reduce the spread of congenital and contact infections. In this study, a TaqMan-based real-time PCR method for the rap...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02030-12
更新日期:2013-01-01 00:00:00
abstract::To define the optimal conditions for human immunodeficiency virus (HIV) detection in microcultures, experiments were conducted with different ratios of patient and donor peripheral blood mononuclear cells (PBMCs). Donor/patient PBMC ratios ranged from 1:1 to 1:125. Optimal results were obtained when 1,500,000 donor ce...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.28.4.734-737.1990
更新日期:1990-04-01 00:00:00