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5100 | LIGHT DIAGNOSTICS™ Rabies DFA Reagent

5 mL  
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      Replacement Information

      Tabella delle specifiche principali

      Key ApplicationsFormatHostDetection Methods
      IF FITC M Fluorescent
      Catalogue Number5100
      Brand Family Chemicon®
      Trade Name
      • Chemicon
      DescriptionLIGHT DIAGNOSTICS™ Rabies DFA Reagent
      OverviewThe Light Diagnostics Rabies DFA Reagent is intended for the detection of rabies antigens in culture and in acetone-fixed brain and submaxillary tissues of infected animals. Thus the assay could be used as an aid in the indirect diagnosis of human rabies virus infection. All specimens that are negative or indeterminate by DFA testing should be further tested by cell culture or animal inoculation methods.

      For in vitro diagnostic use.

      Test Principle

      The Light Diagnostics Rabies DFA Reagent uses a blend of three fluorescein-labeled monoclonal antibodies directed against the rabies nucleocapsid protein to detect the virus in infected tissue. The labeled antibody is incubated with suspect rabies-infected tissue and will bind to rabies antigen present. Unbound antibody is removed by washing and the antigen-antibody complex is visualized using fluorescence microscopy. Rabies protein in infected cells will fluoresce bright apple-green.

      Summary and Explanation:

      Rabies virus infections have been known and recognized since ancient times (1). All species of both wild and domestic mammals are susceptible and may be capable of transmitting the disease to other animals including humans. Human mortality associated with rabies is still widely reported in countries where rabies is enzootic in domestic dogs; rabies is still considered the most significant zoonotic disease by the World Health Organization (2). Even in areas where canine rabies has been controlled by widespread dog vaccination programs, the disease may persist in terrestrial wildlife populations and bats.

      The virus is transmitted by the bite of an infected animal through the introduction of infectious saliva into the wound. Non-bite transmission may occur rarely by transfer of infectious saliva or nervous tissue from a rabid animal into an existing cut, open wound, or mucous membrane. Infection can also occur from large amounts of aerosolized virus or organ transplant from an infected patient (3).

      A diagnosis of rabies depends on the visualization of viral protein in the brains of infected animals using direct immunofluorescence assay (DFA) . This test plays a critical role in the management of animal bites and the prevention of rabies. DFA examination of brain tissue from a rabies-suspect animal enables the laboratory to provide a reliable determination of rabies infection within a few hours of receipt of a specimen. This allows for a definitive diagnosis before administering rabies post-exposure prophylaxis (4). A negative diagnosis is of equal importance as it prevents unnecessary and expensive post-exposure anti-rabies treatment. DFA tests provide a sensitivity and specificity that approaches 100% and is the standard to which all other methods are compared (5).

      DFA performed on brain tissue is capable of detecting the virus before Negri bodies are demonstrable and is as sensitive as virus isolation in mice or cell culture (6,7,8,9,10). Early rabies conjugates were produced utilizing serum antibodies from immunized animals of a variety of species (4). Recently, monoclonal antibodies specific for antigenic sites on the rabies nucleocapsid protein have been used to provide highly specific and uniform staining reactions (10), with reduced background staining (4).
      Product Information
      • Rabies DFA Reagent (concentrate) - (Catalog No. 5100) One vial containing 5 mL of a concentrated blend of FITC-labeled monoclonal antibodies directed against rabies virus in buffer with protein-stabilizer and 0.1% sodium azide as preservative.
      • NOTE: The Working Dilution must be determined by titration of the Reagent by the user.
      Detection methodFluorescent
      PresentationMaterials Required But Not Provided:
      · Fluorescence microscope with appropriate filter combination for FITC (excitation peak = 490nm, emission peak = 515nm) with 100x, 200x, and 400x magnification (dry objective).

      · Incubator (37°C ± 1°C)

      · Humid chamber

      · Coplin staining jars

      · Coverslips ( No. 1)

      · Phosphate-buffered saline (PBS) (Catalog No. 5087 or equivalent)

      · Rabies Reagent Diluent (Cat. No. 5070) or equivalent (PBS containing 1.0% bovine serum albumin (BSA), fraction V).

      · Deionized or distilled water

      · Mounting fluid suitable for rabies immunofluorescence 10% buffered glycerol at pH 8.0 and above.

      · Microscope slides with hydrophobic coating or acrylic pen or wax pencil to mark uncoated slides

      · Homogenizer (aerosol-tight)

      · Normal and infected mouse brain suspensions
      Key Applications
      • Immunofluorescence
      Biological Information
      Antibody TypeMonoclonal Antibody
      Physicochemical Information
      Materials Information
      Toxicological Information
      Safety Information according to GHS
      Safety Information
      Product Usage Statements
      Usage Statement
      • For in vitro Diagnostic Use
      • CE Mark
      Storage and Shipping Information
      Storage ConditionsWhen stored at 2-8° C, the Reagent is stable up to the expiration date printed on the label.

      The diluted Reagent may be aliquoted and stored at -20°C. Avoid repeated freezing and thawing.

      Discard any remaining reagents after the kit expiration date.

      Warnings and Precautions:

      · For in vitro diagnostic use. Directions for use should be carefully followed.

      · Sodium azide, present in the reagent, is toxic if ingested. Sodium azide may react with lead and copper plumbing to form highly explosive metal azides. When disposing of solutions, flush with large amounts of water to prevent azide build-up.

      · Do not mouth pipette reagents.

      · Handle all specimens, slides and materials coming in contact with them as potentially infectious. Decontaminate with 0.05% sodium hypochlorite. All test material should be inactivated by incineration or steam autoclaving after use.

      · Pooling or alteration of any reagent may cause erroneous results.

      · Do not allow the reagent to dry on the slides during the staining procedure.

      · Acetone is extremely flammable and harmful if swallowed or inhaled. Keep away from heat, sparks, or flames. Use adequate ventilation and avoid breathing vapor. Performance of the fluorescence microscope is critical in achieving satisfactory test results. Microscope objectives, bulb intensity and wattage, and filters may affect results.

      · Working Dilution that is visibly cloudy should not be used.

      CAUTION: All procedures with known or suspected rabies-infected tissues must be performed by rabies-immunized personnel, following accepted Biosafety Level 2 practices. In addition, any manipulations or procedures with the potential for production of infectious aerosols should be performed in a Class II biosafety cabinet. Suitable protective clothing should be worn.
      Packaging Information
      Material Size5 mL
      Transport Information
      Supplemental Information




      Scheda di sicurezza (MSDS) 

      Riferimenti bibliografici

      Panoramica dei riferimenti bibliograficiCodice d'identificazione nel Pub Med
      Preparation and initial application of a monoclonal antibody specific for a newly discovered conserved linear epitope of rabies virus nucleoprotein.
      Xin Jun Lv,Xue Jun Ma,Li Hua Wang,Hao Li,Xin Xin Shen,Peng Cheng Yu,Qing Tang,Guo Dong Liang
      Biomedical and environmental sciences : BES 25 2012

      Mostra il sommario
      22424633 22424633
      Evaluation of lactic acid bacterium from chilli waste as a potential antifungal agent for wood products.
      D R O'Callahan,T Singh,I R McDonald
      Journal of applied microbiology 112 2012

      Mostra il sommario
      22321006 22321006
      Rational design of interleukin-21 antagonist through selective elimination of the gammaC binding epitope.
      Kang L, Bondensgaard K, Li T, Hartmann R, Hjorth SA
      J Biol Chem 285 12223-31 Epub 2010 Feb 18 2010

      Mostra il sommario Testo completo dell'articolo
      20167599 20167599
      Feeder-layer free culture system for human embryonic stem cells.
      Michal Amit
      Methods in molecular biology (Clifton, N.J.) 407 2007

      Mostra il sommario
      18453245 18453245
      Morphological and neoplastic transformation of C3H/10T1/2 Cl 8 mouse embryo cells by insoluble carcinogenic nickel compounds.
      T Miura, S R Patierno, T Sakuramoto, J R Landolph
      Environmental and molecular mutagenesis 14 65-78 1989

      Mostra il sommario
      2548861 2548861

      Manuali d'uso

      LIGHT DIAGNOSTICS Rabies DFA Reagent
      LIGHT DIAGNOSTICS Rabies DFA Reagent multi languages
      Rabies DFA Reagent