نتایج جستجو برای: iron archaeometallurgy

تعداد نتایج: 142538  

Journal: :NMR in biomedicine 2011
Daniel Kim Jens H Jensen Ed X Wu Li Feng Wing-Yan Au Jerry S Cheung Shau-Yin Ha Sujit S Sheth Gary M Brittenham

In iron overload, almost all the excess iron is stored intracellularly as rapidly mobilizable ferritin iron and slowly exchangeable hemosiderin iron. Increases in cytosolic iron may produce oxidative damage that ultimately results in cardiomyocyte dysfunction. Because intracellular ferritin iron is evidently in equilibrium with the low-molecular-weight cytosolic iron pool, measurements of ferri...

Journal: :American journal of physiology. Gastrointestinal and liver physiology 2014
Sukru Gulec Gregory J Anderson James F Collins

Iron is an essential trace mineral that plays a number of important physiological roles in humans, including oxygen transport, energy metabolism, and neurotransmitter synthesis. Iron absorption by the proximal small bowel is a critical checkpoint in the maintenance of whole-body iron levels since, unlike most other essential nutrients, no regulated excretory systems exist for iron in humans. Ma...

Journal: :Blood 2003
Robert J Simpson Edward S Debnam Abas H Laftah Nita Solanky Nick Beaumont Seiamak Bahram Klaus Schümann S Kaila S Srai

Hereditary hemochromatosis is a common iron-loading disorder found in populations of European descent. It has been proposed that mutations causing loss of function of HFE gene result in reduced iron incorporation into immature duodenal crypt cells. These cells then overexpress genes for iron absorption, leading to inappropriate cellular iron balance, a persistent iron deficiency of the duodenal...

Journal: :Therapeutic delivery 2015
Naresh Modepalli H N Shivakumar K L Paranjothy Kanni S Narasimha Murthy

Iron deficiency anemia is one of the major nutritional deficiency disorders. Iron deficiency anemia occurs due to decreased absorption of iron from diet, chronic blood loss and other associated diseases. The importance of iron and deleterious effects of iron deficiency anemia are discussed briefly in this review followed by the transdermal approaches to deliver iron. Transdermal delivery of iro...

2011
Maria Sundberg Cornelia Witthöft

.............................................................................................................. 3 Sammanfattning................................................................................................... 4 Table of content ................................................................................................... 5 Introduction .......................................

Iron is essential to erythrocyte oxygen transport and is a catalyst for oxidative metabolism in all cells. Iron is absorbed by the duodenum and requires an acidic environment for optimal absorption. Iron is found for 70% in erythrocytes, and 30% in storage, and a small amount in myoglobin and cytochromes. Iron supplementation reduces anemia in breastfed infants and increases in significant dose...

Journal: :Annals of clinical and laboratory science 2007
Ernest M Walker Christopher P Epling Cordel Parris Silvestre Cansino Protip Ghosh Devashish H Desai Ryan G Morrison Gary L Wright Paulette Wehner Elsa I Mangiarua Sandra M Walker Eric R Blough

There are few effective agents that safely remove excess iron from iron-overloaded individuals. Our goal was to evaluate the iron-removing effectiveness of acetaminophen given ip or orally in the gerbil iron-overload model. Male gerbils were divided into 5 groups: saline controls, iron-overloaded controls, iron-overloaded treated with ip acetaminophen, iron-overloaded treated with oral acetamin...

Journal: :The Journal of nutrition 2011
Rebecca D Merrill Abu Ahmed Shamim Hasmot Ali Nusrat Jahan Alain B Labrique Kerry Schulze Parul Christian Keith P West

Women of reproductive age are at a high risk of iron deficiency, often as a result of diets low in bioavailable iron. In some settings, the iron content of domestic groundwater sources is high, yet its contribution to iron intake and status has not been examined. In a rural Bangladeshi population of women deficient in dietary iron, we evaluated the association between groundwater iron intake an...

Journal: :نشریه تحقیق در علوم کشاورزی 0

fereidon nourgholipour1*, mohammad passandideh1 and emam gholi nourgholipour 2   [1] - soil and water research institute, tehran, iran   2- university of tehran, college of abureihan, tehran, iran         received: 21 december 2009 accepted: 25 february 201 1     * corresponding author: e-mail: [email protected]       abstract     expansion and economical importance of yield reduction due to iro...

Journal: :Journal of clinical pathology 1968
J S Cox G F Moss I Bremner J Reason

A method is described for measuring the plasma unsaturated iron-binding capacity in the presence of very high concentrations of iron as iron-dextran. The procedure utilizes (59)Fe to label the apotransferrin with subsequent separation of ionic iron from transferrin-bound iron on an ion exchange or Sephadex G.25 column. The unsaturated iron-binding capacity has been measured in rabbits and dogs ...

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