Skibniewska, Ewa M.; Skibniewski, Michał; Kośla, Tadeusz; Urbańska-Słomka, Grażyna
September 2011
Journal of Elementology;Sep2011, Vol. 16 Issue 3, p481
Academic Journal
Zinc is an essential element for maintaining proper functions of animal bodies. It is a component of many hormones and enzymes and a participant in the metabolism of carbohydrates or the synthesis of nucleic acids and proteins. Animal tissues typically contain 10-200 mg of zinc kg-1. Most of this amount (98%) can be found inside the cells. Zinc toxicity is associated mainly with the secondary copper deficit. The aim of the present investigation has been to assess zinc contamination of the environment with coats of domestic and feral cats being the indicator. Urban feral cats are synantrophic animals, living in an urbanized environment and scavenging on human food waste. Thus, they can be treated as a bioindicator of the presence of certain elements in the environment. Analyses of the zinc content in cats' hair have been performed to check whether the zinc level is connected with cats' coat colour, living conditions and gender. The coat samples were collected from the middle abdominal region. Then they were degreased and mineralized in a microwave apparatus, in concentrated nitric acid under increased pressure. The zinc content was determined by the ICP-OES method. The mean zinc content in the investigated coat samples was 238.9 mg kg-1. The lowest zinc content was observed in white hair and the highest - in tortoiseshell hair. The results have confirmed that the content of zinc depends on the hair saturation with melanin. Statistical analysis has shown significant differences between the group of female cats living in the wild (268.09 mg kg-1) and the group of breeding female cats (214.49 mg kg-1) at p=0.05. A higher zinc content was observed in the group of older cats. The mean values did not differ from mean values of the zinc content in the coat and hair of other mammals. Considering the living conditions of the animals, the highest zinc content was noted in the group of animals living in the wild (feral ones).


Related Articles

  • Atletes need enough zinc.  // Science Teacher;Oct99, Vol. 66 Issue 7, p10 

    Reports on the relationship between athletic performance and zinc intake. Role of the zinc-containing enzyme in peak oxygen uptake of the body; Effect of low-zinc diet to energy production and respiratory exchange ratios.

  • The purification and characterization of deoxycytidine kinase from calf thymus. Jing Quan; Yan-Qian Chai; Christopher Branford-White; Li-Min Zhu // World Journal of Microbiology & Biotechnology;Mar2009, Vol. 25 Issue 3, p475 

    Abstract  A facile and fast approach for the purification of deoxycytidine kinase (dCK) from calf thymus was developed using a fast performance liquid chromatography system. A 73-fold enrichment of the enzyme was noted compared to unfractionated dCK. Characterization studies demonstrated...

  • Journal club. Rando, Oliver // Nature;7/10/2008, Vol. 454 Issue 7201, p141 

    The article provides information on chromatin which is believed to be the carrier of epigenetic inheritance in the Deoxyribonucleic Acid (DNA). The chromatin of mother and daughter cells is in similar shape exposing similar regions of DNA for expression. One example of chromatin inheritance...

  • Lead and Zinc Influence on Antioxidant Enzyme Activity and Malondialdehyde Concentrations. Kulikowska-Karpinska, E.; Moniuszko-Jakoniuk, J. // Polish Journal of Environmental Studies;2001, Vol. 10 Issue 3, p161 

    Studies the influence of zinc on the activity of antioxidant enzymes in the blood of rats intoxicated with lead. Materials and methods used; Influence of lead on the activity of antioxidant enzymes in the rats' blood; Reason for the decrease in superoxide dismutase activity in rats intoxicated...

  • Antagonistic Effect In Vivo of Zinc on Inhibition of Aminolevulinic Acid Dehydratase by Lead. Haeger-Aronsen, Birgitta; Schutz, Andreis; Abdulla, Mohammed // Archives of Environmental Health;Jul/Aug76, Vol. 31 Issue 4 

    Examines the antagonistic effect in vivo of zinc on the inhibition of enzyme delta-aminolevulinic acid dehydratase (ALAD) by lead in rabbits. Role of the ALAD in biosynthesis of heme; Correlations between ALAD in red blood cells and zinc in plasma; Relationships between ALAD and zinc in red...

  • Matrix Metalloproteinase-9 and the Cu/Zn Ratio as Ancillary Diagnostic Tools in Distinguishing Between the Classical and Follicular Variants of Papillary Thyroid Carcinoma. Dragutinović, Vesna; Tatić, Svetislav; Nikolić-Mandić, Snežana; Savin, Svetlana; Cvejić, Dubravka; Dunđerović, Duško; Gajić, Milan; Paunović, Ivan // Biological Trace Element Research;Oct2012, Vol. 149 Issue 1, p29 

    The most common histological variants of papillary thyroid carcinoma (PTC), classical (CPTC) and follicular (FPTC), have different diagnostic features, molecular biology, and prognosis. Matrix metalloproteinase-9 (MMP-9) endopeptidase which degrades the components of the extracellular matrix is...

  • Recent patents in nucleic acid synthesis and sequencing.  // Nature Biotechnology;Jan2003, Vol. 21 Issue 1, p100 

    Presents information about recent patents in nucleic acid synthesis and sequencing as of January 2003. Assignees for various patents; Subjects of the patents; Priority application dates for the patents.

  • Nucleic acid amplification testing may be effective in diagnosing TB.  // Infectious Disease News;Jul2009, Vol. 22 Issue 7, p24 

    The article discusses research on the effectiveness of nucleic acid amplification in diagnosing tuberculosis.

  • Studies in the Biochemistry of Oral Tissue: III. Pathways of Carbohydrate Metabolism in Bovine Attached Gingiva. ROSETT, THEODORE; GARNER, PAMELA S.; GANGAROSA, LOUIS P. // Journal of Dental Research;May1972, Vol. 51 Issue 3, p867 

    The article discusses a study on the metabolism of carbohydrates in the attached gingival epithelium of cows. By watching enzyme levels in metabolic pathways, researchers found that the Embden-Meyerhoff pathway has the highest metabolic potential. However, the presence of enzymes does not...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics