Search results for "Monocytes"
showing 10 items of 286 documents
Adrenomedullin and arterial stiffness: integrative approach combining monocyte ADM expression, plasma MR-Pro-ADM, and genome-wide association study.
2014
Background— Adrenomedullin (ADM) is a circulating vasoactive peptide involved in vascular homeostasis and endothelial function. Single nucleotide polymorphisms of the ADM gene are associated with blood pressure variability, and elevated levels of plasma midregional proadrenomedullin (MR-pro-ADM) are associated with cardiovascular diseases. Methods and Results— We investigated the sources of variability of ADM gene expression and plasma MR-pro-ADM concentrations in the general population, and their relationship with markers of atherosclerosis. MR-pro-ADM levels were assessed in 4155 individuals who underwent evaluation of carotid intima-media thickness and arterial rigidity (reflection inde…
Augmented glucose-6-phosphate dehydrogenase activity and normal penetration and metabolism of dehydroepiandrosterone in mononuclear leukocytes in pso…
1986
The aim of the study was to determine a biochemical basis for the augmented oxidative metabolism found in mononuclear leukocytes (MNL) of patients with active psoriasis. Dehydroepiandrosterone (DHEA) is known to inhibit glucose-6-phosphate dehydrogenase (G-6-PDH). We determined the activity of G-6-PDH as well as the penetration and metabolism of DHEA - diminished plasma concentrations of which have been found in psoriatics previously - in 16 patients with active psoriasis and 16 controls. MNL in patients with psoriasis possessed 52% more (p less than 0.05) G-6-PDH activity, based on cell number, and 34% more (p less than 0.05) activity, based on soluble protein. No difference in DHEA penetr…
Oxidative stress and antioxidant enzyme values in lymphomonocytes after an oral unsaturated fat load test in familial hypercholesterolemic subjects
2012
Oxidative stress (OS) has been observed in conditions affecting the cardiovascular system. Familial hypercholesterolemia (FH) is associated with an increased risk of premature coronary heart disease. In the postprandial state, circulating lipids and lipoproteins can modulate OS status. Our aim was to study the response of lymphomonocyte OS status and reactive oxygen species by-products after an oral unsaturated fat load test (OFLT) in those with FH and to compare this response with that obtained in normolipidemic, normoglycemic subjects. We studied 12 patients with FH and 20 healthy controls. In both groups, lymphomonocyte, oxidized/reduced glutathione ratio, and malondialdehyde were determ…
Soluble CD14 monocyte antigen in suction blister fluid and serum of patients with psoriasis.
1993
The purpose of this study was to measure soluble CD14 (sCD14) molecules in the skin and in serum of patients with psoriasis. CD14 is a newly discovered cell surface marker on monocytes that is shed after cell activation. The following procedures were used: suction blisters were raised over the abdominal skin of 9 healthy control individuals and 8 patients with psoriasis. Serum of 17 healthy controls and 17 patients with psoriasis was collected. sCD14 was determined in suction blister fluid and serum by the ELISA technique. The clinical status of psoriasis was rated by the psoriasis area and severity index (PASI score). We found that sCD14 levels in suction blisters of healthy skin (1,050 +/…
Supramaximal exercise mobilizes hematopoietic progenitors and reticulocytes in athletes
2005
Am J Physiol Regul Integr Comp Physiol. 2005 Nov;289(5):R1496-503. Epub 2005 Jul 14. Supramaximal exercise mobilizes hematopoietic progenitors and reticulocytes in athletes. Morici G, Zangla D, Santoro A, Pelosi E, Petrucci E, Gioia M, Bonanno A, Profita M, Bellia V, Testa U, Bonsignore MR. SourceDepartment of Experimental Medicine, University of Palermo, Italy. Abstract Marathon runners show increased circulating CD34+ cell counts and postexercise release of interleukin-6 (IL-6), granulocyte-colony stimulating factor (G-CSF) and flt3-ligand (Bonsignore MR, Morici G, Santoro A, Pegano M, Cascio L, Bonnano A, Abate P, Mirabella F, Profita M, Insalaco G, Gioia M, Vignola AM, Majolino I, Testa…
Pravastatin reverses the membrane cholesterol reorganization induced by myocardial infarction within lipid rafts in CD14(+)/CD16(-) circulating monoc…
2012
International audience; Large numbers of monocytes are recruited in the infarcted myocardium. Their cell membranes contain cholesterol-rich microdomains called lipids rafts, which participate in numerous signaling cascades. In addition to its cholesterol-lowering effect, pravastatin has several pleiotropic effects and is widely used as secondary prevention treatment after myocardial infarction (MI). The aim of this study was to investigate the effects of pravastatin on the organization of cholesterol within monocyte membrane rafts from patients who had suffered myocardial infarction. Monocytes from healthy donors and acute MI patients were cultured with or without 4μM pravastatin. Lipid raf…
Wheat consumption leads to immune activation and symptom worsening in patients with familial mediterranean fever : a pilot randomized trial
2020
We have identified a clinical association between self-reported non-celiac wheat sensitivity (NCWS) and Familial Mediterranean Fever (FMF). Objectives: A) To determine whether a 2-week double-blind placebo-controlled (DBPC) cross-over wheat vs. rice challenge exacerbates the clinical manifestations of FMF
Monocyte/macrophage differentiation in dermatomyositis and polymyositis.
2004
Recent advances have revealed significant differences in the pathogenesis of inflammatory myopathies. To determine whether different patterns of macrophage differentiation are a useful tool to delineate the major groups of inflammatory myopathies, the muscle biopsies of 11 patients with dermatomyositis and 12 patients with polymyositis were studied using different macrophage markers. In polymyositis, the early-activation markers MRP14 and 27E10 stained the majority of macrophages, which were recognized by the pan-macrophage marker Ki-M1P and which were located primarily in the endomysium. In dermatomyositis, macrophages predominantly expressed the late-activation marker 25F9 and were found …
Definition of discrete signals involved in human T-cell activation
1986
Abstract Mitogenic activities of monoclonal antibodies directed at denned receptor structures expressed on the surface of mature human T lymphocytes were employed to study, in detail, signals involved in primary T-cell activation. Based on differential requirements for stimulation, two discrete pathways of human T-cell activation can be defined: the antigen-induced mode of activation initiated through the Ti-T3 antigen-receptor complex and an alternative pathway which can be triggered by monoclonal antibodies directed at the T11 glycoprotein. Perhaps more importantly, the approach taken here allows the definition of stable intermediate cellular stages within the activation cascade and, thus…
Change in expression of MGMT during maturation of human monocytes into dendritic cells.
2005
Dendritic cells (DCs) maturated from monocytes play an important role in the immune system, not only in defense against conventional infections but also in cancer rejection. Because of the central role of DCs in tumor host defense it is highly important that DCs as well as the progenitor cell population are protected during cancer therapy. Since most anticancer drugs target DNA, the DNA repair capacity is most importance for the response of DCs and their precursor cells. Here, we studied the expression of the DNA repair protein O6-methylguanine-DNA methyltransferase (MGMT) in monocytes obtained from peripheral blood of healthy donors and DCs maturated from monocytes (moDCs). We show that MG…