l ornithine/infiammazione

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Suppression of adjuvant arthritis and synovial macrophage inducible nitric oxide by N-iminoethyl-L-ornithine, a nitric oxide synthase inhibitor.

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Nitric oxide (NO.) is a pro-inflammatory effector molecule in certain inflammatory diseases, including arthritis. We investigated the production of NO. by adjuvant arthritis (AA) synovial macrophages, and studied the effects of a NO. synthase inhibitor. N-iminoethyl-L-ornithine (L-NIO). Compared to

Lactobacillus Brevis OPK-3 from Kimchi Prevents Obesity and Modulates the Expression of Adipogenic and Pro-Inflammatory Genes in Adipose Tissue of Diet-Induced Obese Mice.

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Our previous study reported that lactic acid bacteria (L. brevis OPK-3) isolated from kimchi ameliorated intracellular lipid accumulation in 3T3-L1 adipocyte. The current study explored potential roles of L. brevis OPK-3 (KLAB) on preventing body weight gain and its effect on the

The arginase II gene is an anti-inflammatory target of liver X receptor in macrophages.

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The liver X receptors (LXRs) are ligand-dependent transcription factors that have been implicated in lipid metabolism and inflammation. LXRs also inhibit the expression of inflammatory genes in macrophages, including inducible nitric oxide synthase (iNOS). Some of these actions are mediated through

Hepatoprotection by L-Ornithine L-Aspartate in Non-Alcoholic Fatty Liver Disease.

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BACKGROUND Non-alcoholic fatty liver disease (NAFLD) is the leading chronic hepatic condition worldwide and new approaches to management and treatment are limited. CONCLUSIONS L-ornithine L-aspartate (LOLA) has hepatoprotective properties in patients with fatty liver of diverse etiology and results

Ketoprofen controlled release from composite microcapsules for cell encapsulation: effect on post-transplant acute inflammation.

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Cell encapsulation technology raises hopes in medicine and biotechnology. Encapsulated pancreatic islets is a promising approach for the final solution of Type 1 diabetes. Unfortunately, evidence of long-term encapsulated islet graft survival and functional competence lies behind expectancy. Failure

Conditions to study nitric oxide generation by polymorphonuclear cells from an inflammatory exudate in rats.

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Superoxide and nitric oxide release by leukocytes has been usually performed after exposure to a particular stimulus. We measured the generation of superoxide and nitric oxide by cells isolated from an inflammatory exudate of rats in either the absence or the presence of a variety of stimuli.

Enhanced utilization and altered metabolism of arginine in inflammatory macrophages caused by raised nitric oxide synthesis.

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Nitric oxide (NO) production was increased in macrophages during inflammation. Casein-elicitation of rodents causing a peritoneal inflammation offered a good model to study alterations in the metabolism of L-arginine, the precursor of NO synthesis. The utilization of L-arginine for NO production,

Mutagenicity of reactive oxygen and nitrogen species as detected by co-culture of activated inflammatory leukocytes and AS52 cells.

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Activated inflammatory leukocytes generate a variety of reactive oxygen and nitrogen species (RONS) that may have roles in mutagenesis and carcinogenesis. The purpose of the present study was to explore the relationship between inflammatory leukocyte activation and mutagenesis using co-culture

Age-dependent exacerbation of white matter stroke outcomes: a role for oxidative damage and inflammatory mediators.

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OBJECTIVE Subcortical white matter stroke (WMS) constitutes up to 30% of all stroke subtypes. Mechanisms of oligodendrocyte and axon injury and repair play a central role in the damage and recovery after this type of stroke, and a comprehensive study of these processes requires a specialized

Arginase AI is upregulated in acute immune complex-induced inflammation.

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Previous studies have shown high arginase activity at inflammatory sites. Arginase converts L-arginine to L-ornithine, sharing a common substrate with nitric oxide synthase. It exists as two isoforms, AI and AII. While the function of liver arginase (AI) in ureagenesis has been defined, the role and

L-ornithine derived polyamines in cystic fibrosis airways.

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Increased arginase activity contributes to airway nitric oxide (NO) deficiency in cystic fibrosis (CF). Whether down-stream products of arginase activity contribute to CF lung disease is currently unknown. The objective of this study was to test whether L-ornithine derived polyamines are present in

Arginase inhibition prevents inflammation and remodeling in a guinea pig model of chronic obstructive pulmonary disease.

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Airway inflammation and remodeling are major features of chronic obstructive pulmonary disease (COPD), whereas pulmonary hypertension is a common comorbidity associated with a poor disease prognosis. Recent studies in animal models have indicated that increased arginase activity contributes to

N-α-benzoyl-N5-(2-chloro-1-iminoethyl)-L-ornithine amide, a protein arginine deiminase inhibitor, reduces the severity of murine collagen-induced arthritis.

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Rheumatoid arthritis is associated with the development of autoantibodies to citrullinated self-proteins. Citrullinated synovial proteins, which are generated via the actions of the protein arginine deiminases (PADs), are known to develop in the murine collagen-induced arthritis (CIA) model of

Role of prostaglandins and nitric oxide in acute inflammatory reactions in guinea-pig skin.

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1. Oedema formation in skin is dependent on a synergism between mediators that increase vascular permeability and mediators that enhance local blood flow. Leukocyte accumulation is also enhanced by mediators that increase local blood flow. In this study, we have investigated whether nitric oxide

ODC1 inhibits the inflammatory response and ROS-induced apoptosis in macrophages.

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Macrophage activation plays a critical role in the innate immune response. Ornithine decarboxylase (ODC1) metabolizes l-ornithine to polyamines and is the rate-limiting enzyme involved in the metabolism of polyamines, which are reportedly involved in cell differentiation, proliferation, and

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