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Detection of the rubella virus via RT-PCR [19] Detection of rubella-specific IgM antibody [19] Detection of infant rubella-specific IgG antibody [19] at higher levels (and persists for a longer time) than expected for passive maternal transmission; Isolation of the rubella virus by nasal, blood, throat, urine, or cerebrospinal fluid specimens
Rubella virus specific IgM antibodies are present in people recently infected by rubella virus, but these antibodies can persist for over a year, and a positive test result needs to be interpreted with caution. [25] The presence of these antibodies along with, or a short time after, the characteristic rash confirms the diagnosis. [26]
IgM antibodies do not pass across the human placenta (only isotype IgG). [48] These two biological properties of IgM make it useful in the diagnosis of infectious diseases. Demonstrating IgM antibodies in a patient's serum indicates recent infection, or in a neonate's serum indicates intrauterine infection (e.g. congenital rubella syndrome).
IgG deficiency is a form of dysgammaglobulinemia where the proportional levels of the IgG isotype are reduced relative to other immunoglobulin isotypes.. IgG deficiency is often found in children as transient hypogammaglobulinemia of infancy, which may occur with or without additional decreases in IgA or IgM.
The genome encodes several non-coding RNA structures; among them is the rubella virus 3' cis-acting element, which contains multiple stem-loops, one of which has been found to be essential for viral replication. [12] The only significant region of homology between rubella and the alphaviruses is located at the NH2 terminus of non structural ...
It is unknown what specifically causes infantile transient hypogammaglobulinemia. The following are some of the hypothesized mechanisms: 1) defective T cells that prevent B cells from stimulating the proper synthesis of antibodies; 2) maternal IgG suppresses the production of IgG; 3) low levels of vital cytokines; and 4) genetic variations in families predisposed to immunodeficiency.
Pregnant women, for example, are routinely screened in the UK for rubella antibodies to confirm their immunity, which can cause serious congenital abnormalities in their children. In contrast, for HIV , the simple presence of antibodies is not a correlate of immunity/protection since infected individuals develop antibodies without protection ...
The water-accessible surface area of an IgG antibody. Immunoglobulin G (IgG) is a type of antibody. Representing approximately 75% of serum antibodies in humans, IgG is the most common type of antibody found in blood circulation. [1] IgG molecules are created and released by plasma B cells. Each IgG antibody has two paratopes.
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