Ammon Broughton Peck

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OBJECTIVE Recently, the Th1/Th2 paradigm has been expanded by the discovery of Th17 cells, a subset of CD4+ memory T cells characterized by their unique ability to secrete interleukin-17 (IL-17) family cytokines. Importantly, Th17 cells appear to be intimately involved in autoimmunity. We undertook the present study to investigate whether the Th17/IL-23(More)
One of the most important problems in the study of active galaxies is understanding the detailed geometry, physics, and evolution of the central engines and their environments. The leading models involve an accretion disk and torus structure around a central dense object, thought to be a supermassive black hole. Gas found in the environment of AGN is(More)
The detection of 22 GHz water vapor emission from IC 342 is reported, raising the detection rate among northern galaxies with IRAS point source fluxes S100µm > 50 Jy to 16%. The maser, associated with a star forming region ∼10–15 ′′ west of the nucleus, consists of a single 0.5 km s −1 wide feature and reaches an isotropic luminosity of 10 −2 L⊙ (D=1.8(More)
INTRODUCTION Sjögren's syndrome (SS) involves a chronic, progressive inflammation primarily of the salivary and lacrimal glands leading to decreased levels of saliva and tears resulting in dry mouth and dry eye diseases. Seminal findings regarding TH17 cell populations that secrete predominantly interleukin (IL)-17A have been shown to play an important role(More)
INTRODUCTION Recently, we reported the development of the C57BL/6.NOD-Aec1Aec2 mouse that carries two genetic intervals derived from the non-obese diabetic (NOD) mouse capable of conferring Sjögren's syndrome (SjS)-like disease in SjS-non-susceptible C57BL/6 mice. In an attempt to define the molecular bases underlying the onset of stomatitis sicca(More)
Sjögren's syndrome (SS), a systemic autoimmune disease, is characterized by inflammation of exocrine tissues accompanied by a significant loss of their secretory function. Clinical symptoms develop late and there are no diagnostic tests enabling early diagnosis of SS. Thus, particularly to study these covert stages, researchers turn to studying animal(More)
Sjögren's syndrome (SS) involves a chronic, progressive inflammation primarily of the salivary and lacrimal glands leading to decreased levels of saliva and tears that eventually result in dry mouth and dry eye diseases. T(H)17 cell populations secreting IL17A have been shown to have an important function in an increasing number of autoimmune diseases,(More)
A major role of the nicotinamide adenine dinucleotide phosphate (NADPH) oxidase family of enzymes is to catalyze the production of superoxides and other reactive oxygen species (ROS). These ROS, in turn, play a key role as messengers in cell signal transduction and cell cycling, but when they are produced in excess they can lead to oxidative stress (OS).(More)
The role of non-H-2 alloantigens, specifically Mls locus products, in secondary in vitro T-cell-mediated cytotoxicity has been studied. Splenic T lymphocytes, activated against Mls locus alloantigens in primary-mixed cultures and isolated by velocity sedimentation gradient separation techniques, were used as responding populations in secondary mixed(More)
BACKGROUND Patients with cystic fibrosis have an increased risk of hyperoxaluria, and of subsequent nephrocalcinosis and calcium-oxalate urolithiasis. Oxalate homoeostasis is controlled, in part, by the intestinal bacterium, Oxalobacter formigenes. The loss of this bacterium from the gut flora is associated with an increased risk of hyperoxaluria and(More)