نتایج جستجو برای: free iron

تعداد نتایج: 649758  

2010
Eugene D. Weinberg

Excessive or misplaced tissue iron now is recognized to pose a substantial health risk for an extensive array of endocrinological, gastrointestinal, infectious, neoplasmic, neurodegenerative, obstetric, ophthalmic, orthopedic, pulmonary and vascular diseases. Ingested, injected, inhaled and decompartmentalized iron contributes not only to disease, but also to aging and mortality. Iron is danger...

Journal: :Indian journal of physiology and pharmacology 2000
D C Sharma R Mathur

Some enzymes and intermediates of heme synthesis were determined in blood and urine of 26 women with severe iron deficiency anemia (IDA). Erythrocyte free protoporphyrin was almost doubled and delta-aminolevulinate dehydrase significantly raised. But urinary excretion of delta-aminolevulinic acid and reticulocyte ferrochelatase were significantly reduced in iron deficiency anemia. Hence these c...

Journal: :Chemical communications 2010
Stuart Licht Baohui Wang

We report a fundamental change in the understanding of iron oxide thermochemistry, opening a facile, new CO(2)-free route to iron production. The resultant process can eliminate a major global source of greenhouse gas emission, producing the staple iron in molten media at high rate and low electrolysis energy.

Journal: :Hypertension research : official journal of the Japanese Society of Hypertension 2004
Kan Saito Nobukazu Ishizaka Toru Aizawa Masataka Sata Naoyuki Iso-O Eisei Noiri Minoru Ohno Ryozo Nagai

We have previously shown that abnormal iron metabolism might be one underlying mechanism of the renal damage observed in the angiotensin II-infused rat. Transforming growth factor-beta1 (TGF-beta1) is known to play a crucial role in the development of renal damage induced by activation of the renin-angiotensin-aldosterone system. The purpose of the present study was to examine the effects of an...

2012
M. Mohammadpour A. Sadeghi A. Fassihi L. Saghaei A. Movahedian M. Rostami

A series of ortho-hydroxypyridine-4-ones were prepared in high yields and evaluated for antioxidant and iron chelating activities. N(1)-H hydroxypyridinones Va, Vb, and Ve were the best radical scavengers in DPPH free radical scavenging assay. Compound Vb was proved to be the most potent compound in hydrogen peroxide scavenging assay. All of the synthesized compounds had very close chelating ab...

2013
Ana Paula Oliveira Amorim Márcia Cristina Campos de Oliveira Thiago de Azevedo Amorim Aurea Echevarria

The aim of this work is to evaluate the antioxidant activity against the radical species DPPH, the reducing capacity against Fe II ions, and the inhibitory activity on the tyrosinase enzyme of the T. triangulare. Hydromethanolic crude extract provided two fractions after the liquid/liquid partition with chloroform. The Folin-Ciocalteu method determined the total phenolic content of the crude ex...

2013
Laura J. Runyen-Janecky

Bacteria that reside in animal tissues and/or cells must acquire iron from their host. However, almost all of the host iron is sequestered in iron-containing compounds and proteins, the majority of which is found within heme molecules. Thus, likely iron sources for bacterial pathogens (and non-pathogenic symbionts) are free heme and heme-containing proteins. Furthermore, the cellular location o...

Journal: :BMC Neurology 2008
Sergio Goncalves Vincent Paupe Emmanuel P Dassa Pierre Rustin

BACKGROUND Friedreich ataxia is a neurological disease originating from an iron-sulfur cluster enzyme deficiency due to impaired iron handling in the mitochondrion, aconitase being particularly affected. As a mean to counteract disease progression, it has been suggested to chelate free mitochondrial iron. Recent years have witnessed a renewed interest in this strategy because of availability of...

Journal: :Acta medica Okayama 1983
R Matsuura

A previous study has shown that a single injection of ferric nitrilotriacetate (Fe-NTA) produces hepatic parenchymal iron loading in rats. The present paper reports on iron uptake by rat liver and iron toxicity in the liver after a single injection of Fe-NTA (7.5 mg Fe/kg B.W.). Iron uptake was examined with 59Fe-NTA and Fe-[14C]-NTA. Thirty percent of the injected 59Fe was incorporated in the ...

Journal: : 2022

Crystallization of cast iron has been shown to be a nanostructured process. Austenitic-graphite eutectic is formed from and graphite nanocrystals, free atoms. Austenitic-cementite atoms iron-carbon complexes. Primary austenite microcrystals are

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