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Release of tumor necrosis factor by alveolar macrophages of patients with sarcoidosis. 1990

R P Baughman, and S A Strohofer, and J Buchsbaum, and E E Lower
Department of Medicine, University of Cincinnati Medical Center, OH 45267.

Tumor necrosis factor (TNF) is a monokine released by macrophages and is important in the inflammatory response. We compared the spontaneous release of TNF by alveolar macrophages (AMs) from patients with symptomatic pulmonary sarcoidosis, some of whom were receiving corticosteroid therapy, with AMs from control smokers. TNF was released from AMs of sarcoidosis patients at significantly higher levels than was released by control AM subjects (sarcoids, 15 U/ml [0 to 1140 U (median [range]]); controls, all less than 5 U/ml, p less than 0.01). By using a specific polyclonal antibody, the detected TNF was found to be TNF-alpha. Among the sarcoidosis patients, the amount of TNF released was significantly lower for those patients given treatment with corticosteroids (5 U/ml [0 to 15 U/ml]) compared with untreated persons (50 U/ml [0 to 1140 U/ml], p less than 0.05). In vitro studies demonstrated that incubation of peripheral blood monocytes or AMs with dexamethasone for 42 hours suppressed subsequent release of TNF. We conclude that AMs from sarcoidosis patients often spontaneously release TNF and this release is suppressed by prolonged corticosteroid therapy.

UI MeSH Term Description Entries
D008264 Macrophages The relatively long-lived phagocytic cell of mammalian tissues that are derived from blood MONOCYTES. Main types are PERITONEAL MACROPHAGES; ALVEOLAR MACROPHAGES; HISTIOCYTES; KUPFFER CELLS of the liver; and OSTEOCLASTS. They may further differentiate within chronic inflammatory lesions to EPITHELIOID CELLS or may fuse to form FOREIGN BODY GIANT CELLS or LANGHANS GIANT CELLS. (from The Dictionary of Cell Biology, Lackie and Dow, 3rd ed.) Bone Marrow-Derived Macrophages,Monocyte-Derived Macrophages,Macrophage,Macrophages, Monocyte-Derived,Bone Marrow Derived Macrophages,Bone Marrow-Derived Macrophage,Macrophage, Bone Marrow-Derived,Macrophage, Monocyte-Derived,Macrophages, Bone Marrow-Derived,Macrophages, Monocyte Derived,Monocyte Derived Macrophages,Monocyte-Derived Macrophage
D011650 Pulmonary Alveoli Small polyhedral outpouchings along the walls of the alveolar sacs, alveolar ducts and terminal bronchioles through the walls of which gas exchange between alveolar air and pulmonary capillary blood takes place. Alveoli, Pulmonary,Alveolus, Pulmonary,Pulmonary Alveolus
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000305 Adrenal Cortex Hormones HORMONES produced by the ADRENAL CORTEX, including both steroid and peptide hormones. The major hormones produced are HYDROCORTISONE and ALDOSTERONE. Adrenal Cortex Hormone,Corticoid,Corticoids,Corticosteroid,Corticosteroids,Cortex Hormone, Adrenal,Hormone, Adrenal Cortex,Hormones, Adrenal Cortex
D012507 Sarcoidosis An idiopathic systemic inflammatory granulomatous disorder comprised of epithelioid and multinucleated giant cells with little necrosis. It usually invades the lungs with fibrosis and may also involve lymph nodes, skin, liver, spleen, eyes, phalangeal bones, and parotid glands. Besnier-Boeck Disease,Boeck's Sarcoid,Besnier-Boeck-Schaumann Syndrome,Boeck Disease,Boeck's Disease,Schaumann Disease,Schaumann Syndrome,Schaumann's Syndrome,Besnier Boeck Disease,Besnier Boeck Schaumann Syndrome,Boeck Sarcoid,Boecks Disease,Boecks Sarcoid,Disease, Schaumann,Sarcoid, Boeck's,Sarcoidoses,Schaumann's Syndromes,Syndrome, Besnier-Boeck-Schaumann,Syndrome, Schaumann,Syndrome, Schaumann's
D012907 Smoking Willful or deliberate act of inhaling and exhaling SMOKE from burning substances or agents held by hand. Smoking Behaviors,Smoking Habit,Behavior, Smoking,Behaviors, Smoking,Habit, Smoking,Habits, Smoking,Smoking Behavior,Smoking Habits
D014409 Tumor Necrosis Factor-alpha Serum glycoprotein produced by activated MACROPHAGES and other mammalian MONONUCLEAR LEUKOCYTES. It has necrotizing activity against tumor cell lines and increases ability to reject tumor transplants. Also known as TNF-alpha, it is only 30% homologous to TNF-beta (LYMPHOTOXIN), but they share TNF RECEPTORS. Cachectin,TNF-alpha,Tumor Necrosis Factor Ligand Superfamily Member 2,Cachectin-Tumor Necrosis Factor,TNF Superfamily, Member 2,TNFalpha,Tumor Necrosis Factor,Cachectin Tumor Necrosis Factor,Tumor Necrosis Factor alpha

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