Effect of fiber in corn tortillas and cooked beans on iron availability

1982 ◽  
Vol 30 (4) ◽  
pp. 724-727 ◽  
Author(s):  
S. Garcia-Lopez ◽  
C. Jane Wyatt
Keyword(s):  
Iron Availability ◽  
Corn Tortillas

scholarly journals Nitric Oxide Improves Internal Iron Availability in Plants

2002 ◽  
Vol 130 (4) ◽  
pp. 1852-1859 ◽  
Author(s):  
Magdalena Graziano ◽  
Marı́a Verónica Beligni ◽  
Lorenzo Lamattina
Keyword(s):  
Nitric Oxide ◽  
Iron Availability

scholarly journals Reduction of the Temperature Sensitivity of Halomonas hydrothermalis by Iron Starvation Combined with Microaerobic Conditions

2015 ◽  
Vol 81 (6) ◽  
pp. 2156-2162 ◽  
Author(s):  
Jesse P. Harrison ◽  
John E. Hallsworth ◽  
Charles S. Cockell
Keyword(s):  
Physicochemical Parameters ◽  
Marine Bacterium ◽  
Chemical Elements ◽  
Extreme Environments ◽  
Iron Availability ◽  
Iron Starvation ◽  
Specific Chemical ◽  
Content Type ◽  
Distribution And Ecology ◽  
Microaerobic Conditions

ABSTRACTThe limits to biological processes on Earth are determined by physicochemical parameters, such as extremes of temperature and low water availability. Research into microbial extremophiles has enhanced our understanding of the biophysical boundaries which define the biosphere. However, there remains a paucity of information on the degree to which rates of microbial multiplication within extreme environments are determined by the availability of specific chemical elements. Here, we show that iron availability and the composition of the gaseous phase (aerobic versus microaerobic) determine the susceptibility of a marine bacterium,Halomonas hydrothermalis, to suboptimal and elevated temperature and salinity by impacting rates of cell division (but not viability). In particular, iron starvation combined with microaerobic conditions (5% [vol/vol] O2, 10% [vol/vol] CO2, reduced pH) reduced sensitivity to temperature across the 13°C range tested. These data demonstrate that nutrient limitation interacts with physicochemical parameters to determine biological permissiveness for extreme environments. The interplay between resource availability and stress tolerance, therefore, may shape the distribution and ecology of microorganisms within Earth's biosphere.

Red Grape Juice Inhibits Iron Availability:  Application of an in Vitro Digestion/Caco-2 Cell Model

2002 ◽  
Vol 50 (23) ◽  
pp. 6935-6938 ◽  
Author(s):  
Francesca Boato ◽  
Gary M. Wortley ◽  
Rui Hai Liu ◽  
Raymond P. Glahn
Keyword(s):  
Cell Model ◽  
Grape Juice ◽  
In Vitro Digestion ◽  
Iron Availability ◽  
Red Grape Juice ◽  
Red Grape

The effect of dairy products on iron availability

1992 ◽  
Vol 31 (4) ◽  
pp. 259-270 ◽  
Author(s):  
Lauren S. Jackson ◽  
Ken Lee
Keyword(s):  
Dairy Products ◽  
Iron Availability

Iron availability from infant food supplements

1981 ◽  
Vol 34 (12) ◽  
pp. 2630-2634 ◽  
Author(s):  
T A Morck ◽  
S R Lynch ◽  
B S Skikne ◽  
J D Cook
Keyword(s):  
Food Supplements ◽  
Infant Food ◽  
Iron Availability

scholarly journals Infection with Mycobacterium aviumDifferentially Regulates the Expression of Iron Transport Protein mRNA in Murine Peritoneal Macrophages

2001 ◽  
Vol 69 (11) ◽  
pp. 6618-6624 ◽  
Author(s):  
Wangjian Zhong ◽  
William P. Lafuse ◽  
Bruce S. Zwilling
Keyword(s):  
Host Defense ◽  
Transferrin Receptor ◽  
Iron Transport ◽  
Peritoneal Macrophages ◽  
Natural Resistance ◽  
Intracellular Pathogens ◽  
Mrna Levels ◽  
Iron Availability ◽  
Iron Transporter ◽  
Murine Peritoneal Macrophages

ABSTRACT Iron is an important element for the growth of microorganisms as well as in the defense of the host by serving as a catalyst for the generation of free radicals via the Fenton/Haber-Weiss reactions. The iron transporter natural resistance-associated macrophage protein 1 (Nramp1) confers resistance to the growth of a variety of intracellular pathogens including Mycobacterium avium. Recently several other proteins that are involved in iron transport, including the highly homologous iron transporter Nramp2 and the transferrin receptor-associated protein HFE (hereditary hemochromatosis protein), have been described. The relationship of these proteins to host defense and to the growth of intracellular pathogens is not known. Here, we report that infection with M. avium differentially regulates mRNA expression of the proteins associated with iron transport in murine peritoneal macrophages. Both Nramp1 and Nramp2 mRNA levels increase following infection, while the expression of transferrin receptor mRNA decreases. The level of expression of HFE mRNA remains unchanged. The difference in the expression of the mRNA of these proteins following infection or cytokine stimulation suggests that they may play an important role in host defense by maintaining a delicate balance between iron availability for host defense and at the same time limiting iron availability for microbial growth.

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