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Medicine and Health Sciences Commons

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All ETDs from UAB

Theses/Dissertations

2013

Lupus

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Full-Text Articles in Medicine and Health Sciences

The Genetic Complexity Of The Human Fc-Gamma Receptor 1q23 Locus And Its Relationship To Autoimmunity, Travis Samuel Ptacek Jan 2013

The Genetic Complexity Of The Human Fc-Gamma Receptor 1q23 Locus And Its Relationship To Autoimmunity, Travis Samuel Ptacek

All ETDs from UAB

The human immune system must be able to adapt to a wide spectrum of invading pathogens in order to keep the human body alive. This variation includes directed recombination and mutation at the level of the individual and genetic variation and natural selection at the population level. A direct consequence of the adaptability of the immune system is autoimmunity: as the immune system adapts to a shifting spectrum of antigens, it can shift to self-antigens, and therefore attack the body and cause disease. Since genetic factors are part of this adaptability, they are also connected with autoimmune disease. SLE is …


Determinant Of G-Chain Mediated Fc Receptor Signaling, Spandan Shah Jan 2013

Determinant Of G-Chain Mediated Fc Receptor Signaling, Spandan Shah

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Fc receptors provide an interface between humoral immunity and cellular immunity by binding to the Fc portion of immunoglobulin and mediating effector functions. Cells expressing Fc receptors play a major role in immune complex clearance via phagocytosis, leading to a context dependent pro- or anti-inflammatory environment. Signaling by multi-chain Fc receptor complexes, including FcgRI, FcgRIII, FceRI and FcaRI is mediated by the ITAM-containing common FceRIg (g-chain) subunit. However, despite the use of a common g-chain, different Fc receptor complexes elicit specific cellular programs, suggesting additional layers of regulation of tyrosine based signaling by g-chain. We hypothesized that the unique g-chain …