Mycoplasma Pneumoniae IgG Ab

Mycoplasma pneumoniae is a bacterium that can cause various respiratory infections, including pneumonia. This bacterium is particularly interesting because it is one of the smallest organisms capable of replicating independently. Unlike most bacteria, Mycoplasma pneumoniae lacks a cell wall, making it resistant to many antibiotics that target the cell wall, such as penicillin. Testing for the presence of Mycoplasma Pneumoniae IgG Ab is very important if an infection with this bacterium is suspected, and the analysis can be done at IntroLab, one of the most reliable laboratories in Belgrade.

Why is this analysis important?

The Mycoplasma pneumoniae IgG Ab analysis is used to detect IgG class antibodies against Mycoplasma pneumoniae in the blood.

When do IgG class antibodies occur?

IgG (immunoglobulin G) antibodies are one of the five main classes of immunoglobulins present in the human body. They develop in response to an infection or exposure to certain antigens. Here are a few key facts about them:

• IgG antibodies usually occur after IgM antibodies and represent the secondary immune response to an infection. While IgM antibodies typically start to appear a few days after antigen exposure, IgG antibodies usually appear several weeks after exposure and can remain in the blood for months or even years afterward.
• This class of antibodies provides long-lasting immunity against many pathogens. After a person recovers from an infection, the presence of IgG antibodies can help protect against reinfection by the same pathogen.
• IgG antibodies can cross the placental barrier, providing passive immunity to the fetus and newborn.
• Tests that detect IgG antibodies are often used in diagnostics to determine if a person has previously been exposed to a particular pathogen.

In the context of Mycoplasma pneumoniae, the presence of IgG antibodies may indicate a current infection with this bacterium. However, it is important to note that the mere presence of these antibodies does not necessarily indicate an active infection; it may also indicate a previous one.

How is Mycoplasma pneumoniae infection transmitted?

Mycoplasma pneumoniae is transmitted via aerosols from person to person. Outbreaks of this bacterium occur every 3-7 years, typically starting in early autumn. The infection is most common in children aged 2-12 years, while about 80% of adults are seropositive for IgG.

Limitations

IgM is a reliable marker of acute infection in children but may present several limitations in adults. For example, IgM can last up to a year, so it does not always indicate acute infection. Approximately 20% of adults, especially older individuals, do not develop an IgM response, particularly in the case of reinfection. Due to the delayed increase of IgG and high seroprevalence in adults from past infection, it is advisable, where possible, to simultaneously test both IgG and IgM.

Analyses related to Mycoplasma Pneumoniae IgG Ab

In addition to the Mycoplasma Pneumoniae IgG Ab analysis, the IntroLab laboratory also offers analysis for the presence of Mycoplasma Pneumoniae IgM Ab in the blood.