Genetic variations have been associ...

Genetic variations have been associated with disease susceptibility and disease issues The association of asthma and allergy with certain gene polymorphisms or mutations is a belonging to all example of genetically determined disease susceptibility. The behavior and clinical manifestations of infectious diseases also might be dictated by the agency of the same phenomenon. Somech and associates reviewed the part of less common gene variants in susceptibility to infectious agents.

Human leukocyte antigen polymorphism is a known contributor to a growing list of diseases. Other genetic polymorphisms also alter the immune method or cause a deficiency or insufficiency of composings of the immune system. Primary immunodeficiency diseases caused by the agency of genetic polymorphisms are now largely diagnosable with molecular probes. These disorders are classified as T lymphocyte B lymphocyte phagocytic small cavity and complement deficiencies. All predispose to infection.

Les used by all genetic variants that alter entertainer defense and predispose persons to specific infections issue in other variations of the innate immune hypothesis (the first-line host defense of multicellular organisms) and the adaptive constitutings of the immune system. Examples of a certain less common forms of gene alteration include: (1) XLP disease, a peremptory form of Epstein-Barr virus infection, (2) disseminated atypical Mycobacterium resulting from abnormalities in the interferon-gamma mediated immune pathway, (3) malaria susceptibility, (4) Ascaris tonnage in infected persons, (5) progression of liver disease in chronic hepatitis C virus, (6) susceptibility to returning acute otitis media, and (7) severity of answer to group A streptococcus infection. Genetic variants also can contribute to increased risk of sepsis and poor outcome

The authors infer that host genetic variants play an important part in determining susceptibility to infectious disease and result of infection. Some variations may be protective, of that kind as occurs in patients with malaria and hemoglobinopathies. Understanding the molecular basis of these variants may improve therapies and allow for unravelling of useful vaccines. Future research might permit formulation of individualized risk profiles for a variety of infections, resulting in optimized treatments.

Somech R et al. Genetic predisposition to infectious pathogens: a review of les familiar variants. Pediatr Infect Dis J May 2003;22:457-61

COPYRIGHT 2004 American Academy of Family Physicians

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