Iron, Copper, and Zinc Isotopic Fractionation in Seafloor Basalts and Hydrothermal Sulfides

Objectives The aim of this study was to analyze iron, copper and zinc concentrations in commercial foods and compare among food formats (dry, canned, raw), foods marketed by age category (adult 1+ years and senior 7+ years) and foods intended for adult maintenance vs all life stages. Methods In total, 112 commercial non-therapeutic food products marketed for healthy adult and senior cats were purchased in the USA. Foods were analyzed for their proximate composition. Trace mineral concentrations were measured using inductively coupled argon plasma–optical emission spectroscopy and described on a calculated metabolizable energy basis using standard modified Atwater values. Results Measured iron (median 58.4 mg/1000 kcal [range 15.7–379.0]), copper (median 5.6 mg/1000 kcal [range 0.8–13.3]) and zinc (median 47.6 mg/1000 kcal [range 7.6–128.1]) concentrations were highly variable among cat foods. When all food products – regardless of their nutritional adequacy substantiation method – were compared with the Association of American Feed Control Officials regulatory minimums, 13/112 food products had a mineral deficiency, of which a majority (n = 11/13) were raw food products. Raw foods had significantly lower trace mineral concentrations compared with dry food products and, except for copper, canned food products. Cat foods marketed for senior cats had higher iron ( P = 0.019) and zinc ( P <0.0001) concentrations than foods marketed for adult cats. Foods intended for adult maintenance had higher iron ( P = 0.003) and zinc concentrations than foods intended for all life stages ( P <0.0001). Conclusions and relevance Iron, copper and zinc concentrations in commercial non-therapeutic foods for adult and senior cats are highly variable. A minority of foods – mainly raw food products – were deficient in these minerals. It is unknown if some foods with high trace mineral concentrations could have adverse effects as studies are needed to establish safe upper limits for dietary intake of trace minerals in healthy cats.

Download Full-text

Iron, copper, and zinc status in rats fed supplemental nickel

Biological Trace Element Research ◽

10.1007/bf02990360 ◽

1991 ◽

Vol 31 (1) ◽

pp. 63-70 ◽

Cited By ~ 1

Author(s):

J. S. Oosting ◽

A. G. Lemmens ◽

G. J. Van Den Berg ◽

A. C. Beynen

Keyword(s):

Zinc Status ◽

Iron Copper ◽

Copper And Zinc

Download Full-text

Concentration of Trace Metals (Lead, Iron, Copper and Zinc) In Crops Harvested in Some Oil Prospecting Locations in River State, Nigeria

10.18697/ajfand.9.1095 ◽

2005 ◽

Vol 5 (9) ◽

pp. 01-21

Author(s):

Alexander Hart ◽

◽

Oboh CA ◽

Barimalaa IS ◽

TG Sokari

Keyword(s):

Trace Metals ◽

State University ◽

Industrial Base ◽

Iron Copper ◽

Copper And Zinc ◽

Port Harcourt ◽

Zinc Concentrations ◽

Hibiscus Esculentus ◽

High Level ◽

Rivers State

Concentrations of the trace metals lead, iron, copper and zinc were estimated in crops harvested in some oil prospecting locations in Rivers State, Nigeria. The locations were; Agbada-Aluu (AA), Ebocha (EB), Idu Ekpeye (IE), Obagi (OB) and Trans Amadi Layout (TA), with the Teaching and Research Farm of Rivers State University of Science and Technology, Port Harcourt as control. Crops investigated were cassava (Manihot esculenta), cocoyam (Colocasia esculenta), okra (Hibiscus esculentus), pumpkin leaves (Telfairia occidentalis) and waterleaf (Talinum traingulare). Results of the mean lead concentrations were from 1.1µg/g in cocoyam to 9.1 µg/g in okro, showing higher trends in the industrialized areas. While cocoyam had the lowest lead concentration, the concentration rest of the crops did not differ significantly from one another. Crops from locations TA, OB, IE and EB had significantly higher concentrations of lead, although IE, AA and TF were not significantly different from one another. Mean concentrations of iron were between 40 µg/g in cassava from TF, and 651 µg/g in pumpkin leaves from TA - the industrial base of Rivers State - reflecting a high level of pollution from the various industries in that location. Differences in concentration of iron in crops showed pumpkin leaves to have the highest level of iron, followed by the other green vegetables – waterleaf and okra - although no significant differences occurred between okra, cocoyam and cassava. Copper concentrations were between 4.4 µg/g in cocoyam from locations TF and 23 µg/g in pumpkin leaves from TA. Pumpkin leaves had the highest concentrations of copper, followed by okra, then waterleaf, with cocoyam and cassava having the least significant levels. Zinc concentrations in crops were between 29 µg/g in cocoyam from TF to 240 µg/g in pumpkin leaves from EB. Pumpkin leaves and okra contained the highest levels of the metal, followed by waterleaf, then cassava and finally cocoyam. In terms of location, TA, OB and EB had the highest concentrations in crops, the least occurring in TF and AA. These results reflect higher concentrations of metals in crops from the industrialized locations, with the green vegetables, particularly pumpkin leaves, having the highest uptake, while cocoyam invariably had the least. These findings give cause for concern, particularly as heavy metals are bio-accumulative in the system and portend a serious health risk to man and animals.

Download Full-text

Levels of Elements in Milk and Yoghurt

Baghdad Science Journal ◽

10.21123/bsj.9.1.50-56 ◽

2012 ◽

Vol 9 (1) ◽

pp. 50-56

Author(s):

Baghdad Science Journal

Keyword(s):

Dairy Products ◽

Cadmium Concentration ◽

Local Market ◽

Iron Copper ◽

Copper And Zinc ◽

Two Samples ◽

Standard Level ◽

Aluminum Cans

This study aimed to know the concentration of elements content in dairy products. Nine samples collected from the local market in Baghdad, two samples of milk and seven of yoghurt.The results were followed: The ratio of Aluminum In Aluminum cans That is used for storage milk and industrialize yoghurt is about 95.5% ,this ratio is against [1] which said that pureness of Aluminum used in Aluminum cans should not be less than 98-99% . and the ratio of Cadmium reached to 0.001% which is also against [1] which assure that the Aluminum cans should be clean from that element, mean while the concentration of Iron, Copper and Zinc were within the standard level. The highest concentration of Iron was in treatment B2(canon yoghurt)it was 9.95 mg/L while the lowest concentration 4.1 mg/L was in treatment B1 (lab yoghurt). The highest concentration of Copper appeared in treatment B5 it was 4.63 mg/L while the lowest concentration 0.21 mg/L was in treatment B7. The results of this study illustrate that the increase of Zinc in all treatments. The highest level reached to 17.27 mg/L in B3 treatment (Al-washash yoghurt) and 5.18 mg/L as a lowest concentration in B1 treatment (lab yoghurt). The analytic results showed that all of the treatments were cleaned from lead. The highest concentration of Cadmium reached to 0.070 mg/L in B5 treatment (dragh yoghurt) and the lowest concentration reached to 0.023 mg/L was in B4 (Arbeel yoghurt) while treatment B1(lab yoghurt) and B7(kadmiaa yoghurt) were clean from Cadmium concentration when receipt.

Download Full-text

Iron, Copper, and Zinc Transport: Inhibition of Divalent Metal Transporter 1 (DMT1) and Human Copper Transporter 1 (hCTR1) by shRNA

Biological Trace Element Research ◽

10.1007/s12011-011-9243-2 ◽

2011 ◽

Vol 146 (2) ◽

pp. 281-286 ◽

Cited By ~ 50

Author(s):

Alejandra Espinoza ◽

Solange Le Blanc ◽

Manuel Olivares ◽

Fernando Pizarro ◽

Manuel Ruz ◽

...

Keyword(s):

Divalent Metal ◽

Zinc Transport ◽

Divalent Metal Transporter 1 ◽

Copper Transporter ◽

Divalent Metal Transporter ◽

Metal Transporter ◽

Iron Copper ◽

Transport Inhibition ◽

Copper And Zinc ◽

Copper Transporter 1

Download Full-text

Effect of Cerebral Amyloid Angiopathy on Brain Iron, Copper, and Zinc in Alzheimer's Disease

Journal of Alzheimer s Disease ◽

10.3233/jad-2010-101503 ◽

2011 ◽

Vol 24 (1) ◽

pp. 137-149 ◽

Cited By ~ 42

Author(s):

Matthew Schrag ◽

Andrew Crofton ◽

Matthew Zabel ◽

Arshad Jiffry ◽

David Kirsch ◽

...

Keyword(s):

Alzheimer’S Disease ◽

Alzheimer's Disease ◽

Cerebral Amyloid Angiopathy ◽

Amyloid Angiopathy ◽

Brain Iron ◽

Iron Copper ◽

Copper And Zinc ◽

Cerebral Amyloid

Download Full-text

Speciation of iron, copper and zinc in the Hawkesbury River

Marine and Freshwater Research ◽

10.1071/mf9820971 ◽

1982 ◽

Vol 33 (6) ◽

pp. 971 ◽

Cited By ~ 3

Author(s):

AJ Pik ◽

JM Eckert ◽

KL Williams

Keyword(s):

Surface Waters ◽

Membrane Filtration ◽

Chelating Resin ◽

Salinity Range ◽

Hydrated Ions ◽

Iron Copper ◽

Copper And Zinc ◽

Exchangeable Fraction ◽

Particulate Form ◽

Iron Fraction

A combination of membrane filtration, ion exchange, coprecipitation and thin-film X-ray fluorescence spectrometry was used to obtain data on the chemical speciation of iron, copper and zinc in surface waters, ranging in salinity from 0 to 30Ym, of the Hawkesbury River, N.S.W. Iron, the principal trace metal, was found mainly (>90%) in the particulate form. The dissolved (filterable) iron fraction was largely non-ion- exchangeable (colloidal) in the freshwater region and ion-exchangeable in saline waters (as hydrated ions or metal complexes that dissociate on the chelating resin column). Copper and zinc, by contrast, were almost entirely filterable over the whole salinity range, copper being 50-100% in the non-ion-exchangeable fraction, and zinc, 70-100% ion-exchangeable.

Download Full-text

Serum Iron Levels and Copper-to-Zinc Ratio in Sickle Cell Disease

Medicina ◽

10.3390/medicina55050180 ◽

2019 ◽

Vol 55 (5) ◽

pp. 180

Author(s):

Charles Antwi-Boasiako ◽

Gifty Dankwah ◽

Robert Aryee ◽

Charles Hayfron-Benjamin ◽

Alfred Doku ◽

...

Keyword(s):

Oxidative Stress ◽

Sickle Cell Disease ◽

Sickle Cell ◽

Serum Levels ◽

Zinc Homeostasis ◽

Healthy Controls ◽

Cell Disease ◽

Flame Atomic Absorption ◽

Iron Copper ◽

Copper And Zinc

Background and Objectives: Altered copper and zinc homeostasis may influence the antioxidant defense system and consequently lead to oxidative stress and associated complications in sickle cell disease (SCD) patients. Iron levels have been reported to increase in sickle cell patients due to frequent blood transfusion, chronic intravenous haemolysis and increased absorption of iron from the gastrointestinal tract. These elevated levels of iron may also lead to extensive oxidative damage. The current study evaluated serum levels of iron, copper and zinc in SCD patients and “healthy” controls. Materials and Methods: The study was a cross-sectional one, comprising 90 SCD patients with Haemoglobin SS and Haemoglobin SC genotypes and 50 HbAA “healthy” controls. Serum levels of iron, copper and zinc were measured using a Flame Atomic Absorption Spectrometer (Variant 240FS manufactured by VARIAN Australia Pty Ltd, VIC, Australia). Copper and zinc ratios were calculated and analyzed. Results: Serum levels of iron and copper were significantly elevated in the SCD patients, compared to their “healthy” counterparts (p < 0.001). These levels were further increased in patients with haemoglobin SS in vaso-occlusive crises (HbSS VOCs). Serum zinc levels were, however, significantly lower in the SCD patients, particularly during vaso-occlusion. The copper-to-zinc ratio was also found to be significantly higher in the SCD patients. Conclusion: Elevated copper-to-zinc ratio may be a biomarker of sickle cell oxidative stress and associated complications. The ratio may also be informative for the management of sickle cell oxidative burden. The significantly lower levels of zinc in the SCD patients may warrant zinc supplementation.

Download Full-text