{"product_id":"abcam-ab239431","title":"Abcam, ab239431, Human Surfactant protein D \/ SP-D ELISA Kit","description":"\u003cp\u003eSize: 1 x 96Tests\u003cbr\u003e\nHuman Surfactant protein D \/ SP-D ELISA Kit is a single-wash 90-min Simplestep used to quantify Human Surfactant protein D \/ SP-D with a sensitivity of 4.29 pg\/ml. The assay uses a simple mix-wash-read protocol with just one incubation and one wash step. - Colorimetric Sandwich ELISA - 450 nm readout : works on any standard plate reader - Design your own immunoassay: we also offer the conjugation-ready antibody pair\u003cbr\u003e\nKey facts\u003cbr\u003e\nDetection method:Colorimetric,\u003cbr\u003e\nSample types:Heparin Plasma, Citrate plasma, Cell culture supernatant, Serum, EDTA Plasma,\u003cbr\u003e\nReacts with:Human,\u003cbr\u003e\nAssay type:Sandwich (quantitative),\u003cbr\u003e\nSensitivity:= 4.29 pg\/mL,\u003cbr\u003e\nRange:125 - 8000 pg\/mL,\u003cbr\u003e\nAssay time:1h 30m,\u003cbr\u003e\nAssay Platform:Pre-coated microplate (12 x 8 well strips)\u003c\/p\u003e\n\n\u003cp\u003eProduct details:\u003cbr\u003e\nHuman Surfactant protein D \/ SP-D ELISA Kit (ab239431) is a single-wash 90 min sandwich ELISA designed for the quantitative measurement of Surfactant protein D \/ SP-D protein in cell culture supernatant, cit plasma, edta plasma, hep plasma, and serum. It uses our proprietary SimpleStep ELISA® technology. Quantitate Human Surfactant protein D \/ SP-D with 4.29 pg\/ml sensitivity.\u003cbr\u003e\nSimpleStep ELISA® technology employs capture antibodies conjugated to an affinity tag that is recognized by the monoclonal antibody used to coat our SimpleStep ELISA® plates. This approach to sandwich ELISA allows the formation of the antibody-analyte sandwich complex in a single step, significantly reducing assay time. See the SimpleStep ELISA® protocol summary in the image section for further details. Our SimpleStep ELISA® technology provides several benefits:\u003cbr\u003e\n- Single-wash protocol reduces assay time to 90 minutes or less\u003cbr\u003e\n- High sensitivity, specificity and reproducibility from superior antibodies\u003cbr\u003e\n- Fully validated in biological samples\u003cbr\u003e\n- 96-wells plate breakable into 12 x 8 wells strips\u003cbr\u003e\nA 384-well SimpleStep ELISA® microplate (\u003cbr\u003e\nab203359\u003cbr\u003e\n) is available to use as an alternative to the 96-well microplate provided with SimpleStep ELISA® kits.\u003c\/p\u003e\n\n\u003cp\u003eProperties and Storage Information:\u003cbr\u003e\nShipped at conditions-Blue Ice, Appropriate short-term storage conditions-+4°C, Appropriate long-term storage conditions-+4°C, Storage information-+4°C\u003c\/p\u003e\n\n\u003cp\u003eSupplementary Information:\u003cbr\u003e\nThis supplementary information is collated from multiple sources and compiled automatically.\u003cbr\u003e\nSurfactant protein D (SP-D) also known as protein D functions as an important component of the innate immune system. It weighs around 43 kDa and is primarily expressed in pulmonary alveoli where lung cells synthesize it. SP-D belongs to the collectin family and has a C-type lectin domain that allows binding to carbohydrate structures on microbial surfaces. This ability enables SP-D to interact directly with various pathogens and infected cells targeting them for clearance. Researchers often study SP-D with 'anti-surfactant' antibodies using methods like the ELISA protocol including versions like ELISA Sp and ELISA Denise.\u003cbr\u003e\nBiological function summary\u003cbr\u003e\nSP-D contributes to host defense by enhancing the uptake and elimination of pathogens by immune cells such as macrophages. Part of a larger protein complex SP-D can opsonize bacteria and viruses facilitating phagocytosis. Its role extends to modulating inflammation by affecting the production of pro-inflammatory cytokines. By maintaining homeostasis in surfactant composition it indirectly supports lung function and protects against lung injury. SP-D’s function involves communication and transmission of signals within the immune system making it integral to pulmonary immune processes.\u003cbr\u003e\nPathways\u003cbr\u003e\nSurfactant protein D is involved in the regulation of the complement and coagulation cascades as well as the pathogen recognition pathway. It is closely related to other collectins such as surfactant protein A (SP-A) which share similar mechanisms in the immune response. SP-D's interaction within these pathways highlights its role in identifying and neutralizing pathogens. Through its connections with related proteins SP-D plays an important part in modulating immune responses ensuring effective pathogen elimination without excessive inflammation.\u003cbr\u003e\nSP-D has been linked with respiratory diseases such as chronic obstructive pulmonary disease (COPD) and pulmonary fibrosis. These conditions may involve impaired SP-D function or expression levels potentially due to genetic factors or environmental influences. SP-D also interacts with proteins like SP-A in these diseases participating in lung immune responses. Disrupted regulation of SP-D can contribute to chronic inflammatory states in the lungs exacerbating disease progression and leading to compromised lung function. Understanding SP-D's role in these contexts offers potential therapeutic insights for targeting pathological inflammation.\u003c\/p\u003e","brand":"Abcam","offers":[{"title":"Default Title","offer_id":46843563475113,"sku":"ab239431","price":0.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/iright.com\/ar\/products\/abcam-ab239431","provider":"Iright","version":"1.0","type":"link"}