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Articles 31 - 35 of 35
Full-Text Articles in Life Sciences
Life After Adhesion: L-Selectin Throughout The T Cell Lifespan, Abner Garcia Fernandez
Life After Adhesion: L-Selectin Throughout The T Cell Lifespan, Abner Garcia Fernandez
Theses and Dissertations
Lymphocytes require antigenic encounter to activate and proliferate, eventually clearing the source of antigenic challenge. The peripheral lymph nodes (PLN) are the primary sites of antigenic encounter and thus the ability of lymphocytes to migrate to this tissue is a requirement for mounting effective immune responses. The process of lymphocyte migration to the PLN is known as the "adhesion cascade". Specifically, lymphocytes are captured from the blood through the adhesion molecule, L-selectin, followed by CC chemokine receptor 7 (CCR7)-mediated integrin activation, which ultimately results in cell transmigration into the PLN. Because the PLN is the site where antigenic encounter is …
Adhesion Molecule Regulation Of Regulatory T Cell Migration, Jessica Jean Loppnow
Adhesion Molecule Regulation Of Regulatory T Cell Migration, Jessica Jean Loppnow
Theses and Dissertations
Regulatory T (Treg) cells mediate tumor immune evasion by suppressing anti-tumor effector T cell responses in peripheral lymphoid tissues and within the tumor. While elevated Treg cell numbers have been shown to correlate with increased tumor growth, mechanisms that regulate their distribution within secondary lymphoid tissue and tumor tissue are not well understood. L-selectin, an adhesion molecule constitutively expressed on all classes of leukocytes, functions early in the adhesion cascade and regulates the migration of lymphocytes to lymph nodes through high endothelial venules. In addition, L-selectin can mediate migration of lymphocytes to sites of inflammation by binding to ligands present …
Identification Of Immunomodulatory Cells Induced By 670 Nm Light Therapy In An Animal Model Of Multiple Sclerosis, Erin Christine Koester
Identification Of Immunomodulatory Cells Induced By 670 Nm Light Therapy In An Animal Model Of Multiple Sclerosis, Erin Christine Koester
Theses and Dissertations
Multiple sclerosis is an autoimmune, demyelinating disease characterized by neurodegeneration and inflammation of the central nervous system. It affects approximately 250,000 people in the United States alone, with women being affected two times more than men. Experimental Autoimmune Encephalomyelitis (EAE) is the primary animal model of MS, sharing clinical signs and histopathology with MS. The current paradigm supports MS/EAE induction by myelin reactive CD4+ T cells that cross the blood brain barrier to induce an inflammatory response that leads to the destruction of the myelin sheath and eventual loss of axons. Recent data suggest that axonal loss and disease progression …
Role Of Interleukin-17 In The Adaptive Immune Response In Lyme Arthritis, Emily Siebers
Role Of Interleukin-17 In The Adaptive Immune Response In Lyme Arthritis, Emily Siebers
Theses and Dissertations
Lyme arthritis is a devastating symptom of Lyme borreliosis that causes severe inflammation of the synovial joints. Interleukin-17 (IL-17) plays a role in the pathogenesis of various arthritides, including, possibly, Lyme arthritis, by causing the expression of genes involved in the production of inflammatory cytokines by synoviocytes. However, the cellular sources of IL-17 in the context of Borrelia burgdorferi infection are unknown, as are the effects of these cells on the development of arthritis and stimulation of humoral immunity through the production of borreliacidal antibodies. Using multiple models of Lyme arthritis, the hypothesis that IL-17 produced by CD4+ cells contributes …
Relationship Between Intestinal Parasitosis With The Basic Services, And The Nutritional State Of Children Under The Age Of Five Of Black, Native, And Mestizo Ethnicities In The Rural Area Of The Province Of Imbabura 1998-1999, Carlos Rosero
Theses and Dissertations
The parasitosis in the tropical countries like Ecuador, are found in the different population groups of all ages, sexes, social conditions, ethnic groups, especially in those without hygienic conditions, pertaining to different geographic zones and the prevalence varies in agreement with the ecology, the human factors and the social economic characteristics. The fecal contamination on land and water where an adequate disposition of excretes, the surrounding conditions, the deficient living conditions, the rural life, the absence of bathrooms, the custom to not use shoes and to have contact with the water. The deficiency of hygienic education, contamination of foods and …