{"product_id":"abcam-ab137980","title":"Abcam, ab137980, Human IgA ELISA Kit","description":"\u003cp\u003eSize: 1 x 96Tests\u003cbr\u003e\nHuman IgA ELISA Kit is a sandwich ELISA designed to quantify Human IgA with a sensitivity of 0.35 ng\/mL. - Colorimetric sandwich ELISA - 450 nm readout - works on any plate reader - Validated on a number of sample types including cerebrospinal fluid (CSF) - Wide dynamic range - quantifies 1.56 - 100 ng\/mL\u003cbr\u003e\nKey facts\u003cbr\u003e\nDetection method:Colorimetric,\u003cbr\u003e\nSample types:Saliva, Urine, Plasma, Cell culture supernatant, Milk, Serum, Cerebral Spinal Fluid,\u003cbr\u003e\nReacts with:Human,\u003cbr\u003e\nAssay type:Sandwich (quantitative),\u003cbr\u003e\nSensitivity:= 0.35 ng\/mL,\u003cbr\u003e\nRange:1.56 - 100 ng\/mL,\u003cbr\u003e\nAssay time:4h,\u003cbr\u003e\nAssay Platform:Microplate\u003c\/p\u003e\n\n\u003cp\u003eProduct details:\u003cbr\u003e\nHuman IgA ELISA Kit ab137980 is a sandwich ELISA to measure Human IgA in serum, plasma, cell culture supernatant, cerebral spinal fluid (CSF), saliva, urine, milk with a sensitivity of 0.35 ng\/ml.\u003cbr\u003e\nHow the assay works\u003cbr\u003e\nAn IgA specific antibody has been precoated onto 96-well plates and blocked. Standards or test samples are added to the wells and subsequently an IgA specific biotinylated detection antibody is added and then followed by washing with wash buffer. Streptavidin-Peroxidase Conjugate is added and unbound conjugates are washed away with wash buffer. TMB is then used to visualize Streptavidin-Peroxidase enzymatic reaction. TMB is catalyzed by Streptavidin-Peroxidase to produce a blue color product that changes into yellow after adding acidic stop solution. The density of yellow coloration is directly proportional to the amount of IgA captured in plate.\u003cbr\u003e\nThe entire kit may be stored at -20°C for long term storage before reconstitution - Avoid repeated freeze-thaw cycles.\u003cbr\u003e\nAssay Specificity\u003cbr\u003e\nOur ELISA kits are rigorously validated to ensure the highest level of consistency and reproducibility. Please check the protocol booklet for more details\u003cbr\u003e\nHuman IgA ELISA Kit ab137980 protocol summary\u003cbr\u003e\n1. Add standard or sample to appropriate wells. Incubate at room temperature\u003cbr\u003e\n2. Wash and add prepared biotin antibody to each well. Incubate at room temperature.\u003cbr\u003e\n3. Wash and add prepared Streptavidin-Peroxidase Conjugate. Incubate at room temperature\u003cbr\u003e\n4. Add Chromogen Substrate to each well. Incubate at room temperature\u003cbr\u003e\n5. Add Stop Solution to each well. Read at 450 nm immediately.\u003cbr\u003e\nGet results in 90 minutes with our SimpleStep ELISA\u003cbr\u003e\nHuman IgA ELISA Kit (\u003cbr\u003e\nab196263\u003c\/p\u003e\n\n\u003cp\u003eProperties and Storage Information:\u003cbr\u003e\nShipped at conditions-Blue Ice, Appropriate short-term storage conditions--20°C, Appropriate long-term storage conditions-Multi, Storage information-Please refer to protocols\u003c\/p\u003e\n\n\u003cp\u003eSupplementary Information:\u003cbr\u003e\nThis supplementary information is collated from multiple sources and compiled automatically.\u003cbr\u003e\nImmunoglobulin A (IgA) also known as sIgA in its secretory form is an important component of the immune system. With a molecular weight of approximately 160 kDa IgA exists as a monomeric or dimeric structure. It is primarily expressed in mucosal areas such as the respiratory tract gastrointestinal tract and urogenital tract while also being present in secretions like saliva tears and breast milk. In its dimeric form IgA associates with a joining (J) chain and a secretory component which facilitates its transport across mucosal barriers.\u003cbr\u003e\nBiological function summary\u003cbr\u003e\nIgA functions as a first line of defense in immune responses occurring at mucosal surfaces. Its primary role is to neutralize pathogens toxins and prevent their attachment and penetration through epithelial cells. This antibody does not form part of a larger complex but plays an important role in immune exclusion by trapping antigens in the mucus layer. Additionally IgA can mediate antibody-dependent cellular cytotoxicity and engage with specific receptors like FcαRI (CD89) on immune cells further enhancing its protective capabilities.\u003cbr\u003e\nPathways\u003cbr\u003e\nIgA participates in the mucosal immune response which is a sub-component of the broader immune system pathways. It is closely associated with the polymeric immunoglobulin receptor (pIgR) which transports IgA to the mucosal surfaces. The pathway involves recombination activation proteins (RAG) during its class-switching process in B cells differentiating from IgM-producing cells to those secreting IgA. These pathways are integral to maintaining the mucosal environment and protecting against pathogens.\u003cbr\u003e\nAlterations or deficiencies in IgA can lead to increased susceptibility to infections and disorders like IgA nephropathy and celiac disease. In IgA nephropathy IgA deposits in the kidneys result in inflammation and damage to renal tissues. Celiac disease involves an immune reaction to gluten where IgA antibodies against tissue transglutaminase (tTG) contribute to intestinal damage. Both conditions illustrate the importance of IgA in maintaining immune balance and its connection with disease pathologies.\u003c\/p\u003e","brand":"Abcam","offers":[{"title":"Default Title","offer_id":46843548762281,"sku":"ab137980","price":0.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/iright.com\/ar\/products\/abcam-ab137980","provider":"Iright","version":"1.0","type":"link"}