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Complete Freund's adjuvant (CFA)

MCE China：Complete Freund's adjuvant (CFA)

Brand：MedChemExpress (MCE)

Cat. No.HY-153808

CAS：9007-81-2

Storage：4°C, protect from light *In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

Shipping：Room temperature in continental US; may vary elsewhere.

Description：Complete Freund's adjuvant (CFA) is an immunoadjuvant emulsified with antigen by its discoverer Jules T. Freund to enhance an animal's immune response to an antigen. Complete Freund's adjuvant (CFA) is also an inducer of the Th1 immune response and a ligand of TLRs. Complete Freund's adjuvant (CFA) contains heat-killed inactive tuberculosis bacilli and consists of a paraffin oil-in-water emulsion. Complete Freund's adjuvant (CFA) stimulates a strong and durable immune response and can be used to induce persistent inflammatory pain models in mice, experimental autoimmune myocarditis (EAM) models, and more. Incomplete Freund's adjuvant (IFA) (HY-153808A) is another type of Freund's Adjuvant that stimulates a weaker immune response.

In Vitro：Complete Freund's adjuvant (CFA) contains numerous microbial TLR ligands (such as TLRs 2, 4, and 9), is a potent inducer of a Th1-type immune response[1].

In Vivo：Complete Freund's adjuvant (CFA) induces experimental autoimmune myocarditis and neuropathic pain, with a relatively low plasma clearance rate (22%)[1][2][3][4]. .f12{ font-size: 12px; } .fwb{ font-weight: bold; } .lh22{ line-height: 22px;; } .lh23 { line-height: 23px; } .pl13{ padding-left: 13px;; } .part { margin-top: 18px; } .mold-first-tit { width: 100%; height: 44px; line-height: 44px; background: #F9F7FB; border-bottom: 1px solid #EBE4F6; padding-left: 16px; box-sizing: border-box; margin-bottom: 17px; } .mold-second-tit:before { content:""; width: 6px; height: 6px; display: inline-block; border-radius: 50%; background: rgba(255,102,0,0.4); margin-right: 12px; position: relative; top: -3px; } .lft-border { border-left: 1px dotted #EBE4F6; padding-right: 12px; margin-left: 3px; box-sizing: border-box; padding-bottom: 12px; } /* .part .dec:last-child { border-bottom: 0; } */ .dec { margin: 10px 15px 0; padding-bottom: 10px; border-bottom: 1px dashed #EBE4F6; } .btm-border { border-left: 1px dashed #EBE4F6; } .text-bg { margin-top: 10px; background: #FFFBF1; padding: 14px; border-bottom: 0; position: relative; } .text-note-bg { margin-top: 10px; background: #FFFDF7; padding: 12px; border-bottom: 0; position: relative; } .text-note { width: 51px; height: 20px; line-height: 20px; background: #FFE2AA; text-align: center; border-radius: 0 0 8px 0; position: absolute; top: 0; left: 0; } .text-note-dec { margin-top: 15px;; } Induction of experimental autoimmune myocarditis (EAM)[1] Background Complete Freund's adjuvant (CFA) induces myocarditis by activating the immune system and enhancing the antigen-specific immune response. Specific Mmodeling Methods Mice: A/J, BALB/c, and IL6KO BALB/c • male • 6-8-week-oldAdministration: 5mg/ml • s.c. • twice Note (1) On day 0, all mice additionally received 500 ng of pertussis toxin (i.p.)(2) On days 0 and 7, mice received subcutaneous injections peptide emulsified in CFA supplemented with 5 mg/mL of Mycobacterium tuberculosis, strain H37Ra. Modeling Indicators Histological analysis: Myocarditis severity was assessed by histology and relative heart weight.Molecular changes: Test serum levels of total IgG, IgG1, IgG2a, IgG2b, IL-1b and IL6. Correlated Product(s): Incomplete Freund's adjuvant (IFA) (HY-153808A) Opposite Product(s): / .f12{ font-size: 12px; } .fwb{ font-weight: bold; } .lh22{ line-height: 22px;; } .lh23 { line-height: 23px; } .pl13{ padding-left: 13px;; } .part { margin-top: 18px; } .mold-first-tit { width: 100%; height: 44px; line-height: 44px; background: #F9F7FB; border-bottom: 1px solid #EBE4F6; padding-left: 16px; box-sizing: border-box; margin-bottom: 17px; } .mold-second-tit:before { content:""; width: 6px; height: 6px; display: inline-block; border-radius: 50%; background: rgba(255,102,0,0.4); margin-right: 12px; position: relative; top: -3px; } .lft-border { border-left: 1px dotted #EBE4F6; padding-right: 12px; margin-left: 3px; box-sizing: border-box; padding-bottom: 12px; } /* .part .dec:last-child { border-bottom: 0; } */ .dec { margin: 10px 15px 0; padding-bottom: 10px; border-bottom: 1px dashed #EBE4F6; } .btm-border { border-left: 1px dashed #EBE4F6; } .text-bg { margin-top: 10px; background: #FFFBF1; padding: 14px; border-bottom: 0; position: relative; } .text-note-bg { margin-top: 10px; background: #FFFDF7; padding: 12px; border-bottom: 0; position: relative; } .text-note { width: 51px; height: 20px; line-height: 20px; background: #FFE2AA; text-align: center; border-radius: 0 0 8px 0; position: absolute; top: 0; left: 0; } .text-note-dec { margin-top: 15px;; } Induction of Neuropathic Pain[2][3] Background Complete Freund's adjuvant (CFA) releases inflammatory mediators TNF-α and IL-6 in body which can activate peripheral nerve endings and act on pain nerve endings, resulting in neuropathic pain[2][3]. Specific Mmodeling Methods Mice: C57BL/6J • male • 8-week-oldAdministration: 20 μl • s.c. • once Note (1) Inject Complete Freund’s Adjuvant (CFA) without dilution into the plantar area of the hind paw.(2) Tests PWT and PWL for both hind paws corresponding to before and 24, 48, 72 h after CFA injection. Modeling Indicators Behavior Observation: Detect paw withdrawal threshold (PWT) and paw withdrawal latency (PWL). Correlated Product(s): Galantamine (HY-76299) Opposite Product(s): Mecamylamine (HY-B1395A)

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References：

[1]. Fontes JA, et al. Complete Freund's adjuvant induces experimental autoimmune myocarditis by enhancing IL-6 production during initiation of the immune response. Immun Inflamm Dis. 2017 Jun;5(2):163-176.  [Content Brief]

[2]. Ji YW, et al. Plasticity in ventral pallidal cholinergic neuron-derived circuits contributes to comorbid chronic pain-like and depression-like behaviour in male mice. Nat Commun. 2023 Apr 17;14(1):2182.  [Content Brief]

[3]. Sun T, et al. Gastrodin relieved complete Freund's adjuvant-induced spontaneous pain by inhibiting inflammatory response. Int Immunopharmacol. 2016 Dec;41:66-73.  [Content Brief]

[4]. Projean D, et al. Use of Freund's Complete Adjuvant (FCA) in inflammatory pain models: consequences on the metabolism and pharmacokinetics of the non-peptidic delta receptor agonist SNC80 in the rat. Xenobiotica. 2007 Aug;37(8):870-83.  [Content Brief]