Trace elements in prehispanic hair samples of Gran Canaria

1991 ◽  
Vol 6 (2) ◽  
pp. 159-163 ◽  
Author(s):  
E. González-Reimers ◽  
M. Arnay-de-la-Rosa ◽  
V. Castro-Alemán ◽  
L. Galindo-Martín
Keyword(s):  
Trace Elements ◽  
Gran Canaria ◽  
Hair Samples

scholarly journals Trace elements in scalp hair of leukaemia patients

Nukleonika ◽  
2014 ◽  
Vol 59 (3) ◽  
pp. 111-120 ◽  
Author(s):  
Ali Khuder ◽  
Mohammad Adel Bakir ◽  
Reem Hasan ◽  
Ali Mohammad ◽  
Khozama Habil
Keyword(s):  
Trace Elements ◽  
Scalp Hair ◽  
Principal Component ◽  
Control Group ◽  
Control Groups ◽  
Exact Probability ◽  
Median Rank ◽  
Hair Samples ◽  
Age Factor ◽  
And Control

Abstract The aim of this study was to determine the concentration of Fe, Ni, Cu, Zn and Pb in scalp hair of leukaemia patients and healthy volunteers, using the optimised XRF method. Leukaemia hair samples were classifi ed corresponding to type, growth and age of the participants. The results showed that the studied trace elements (TEs) in both of leukaemia and control groups were positively skewed. In comparison with the control group, lower Fe, Cu, Zn and Pb and higher of Ni medians were found in all studied leukaemia patients. The median rank obtained by Mann-Whitney U-test revealed insignifi cant differences between the leukaemia patients subgroups and the controls. An exact probability (α < 0.05) associated with the U-test showed signifi cant differences between medians in leukaemia patients and controls groups for Pb (lymphatic/control, acute/control), Cu (lymphatic/control, chronic/control), Ni (lymphatic/control, chronic/control) and Fe (chronic/control). Very strong positive and negative correlations (r > 0.70) in the scalp hair of control group were observed between Ni/Fe-Ni, Cu/Fe-Cu, Zn/Fe-Zn, Pb/Fe-Pb, Cu/Ni-Zn/Ni, Cu/Ni-Pb/Ni, Zn/Ni-Pb/Ni, Zn/Fe-Zn/Cu, Pb/Ni-Ni and Ni/Fe-Pb/Ni, whereas only very strong positive ratios in the scalp hair of leukaemia patients group were observed between Ni/Fe-Ni, Cu/Fe-Cu, Zn/Fe-Zn and Pb/Fe-Pb, all correlations were signifi cant at p < 0.05. Other strong and signifi cant correlations were also observed in scalp hair of both groups. Signifi cant differences between grouping of studied TEs in all classifi ed leukaemia groups and controls were found using principal component analysis (PCA). The results of PCA confi rmed that the type and the growth of leukaemia factors were more important in element loading than the age factor.

scholarly journals Concentration of Zinc, Copper, Selenium, Manganese, and Cu/Zn Ratio in Hair of Children and Adolescents with Myopia

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Monika Fedor ◽  
Beata Urban ◽  
Katarzyna Socha ◽  
Jolanta Soroczyńska ◽  
Małgorzata Krętowska ◽  
...  
Keyword(s):  
Trace Elements ◽  
Children And Adolescents ◽  
Trace Element ◽  
Scalp Hair ◽  
Absorption Spectrometry ◽  
Zinc Level ◽  
Control Group ◽  
Hair Samples ◽  
Insignificant Difference ◽  
Eye Examination

The aim of this work was to determine the concentration of trace elements, zinc, copper, selenium, manganese, and Cu/Zn ratio, in scalp hair samples of children and adolescents with myopia. The study included 92 children (mean age 14.5 ± 2.5 years) with myopia and 43 healthy persons (mean age 11.8 ± 4.7 years). Each patient had a complete eye examination. Trace element concentrations in hair were determined by atomic absorption spectrometry. Cu/Zn ratio was also calculated. The zinc level in the hair of myopic patients was significantly higher (260 µg/g) in comparison to the control group (130 µg/g). There was a significantly lower Cu/Zn ratio in myopic patients (0.045) compared with controls (0.07). An insignificant difference was observed in the hair level of copper, selenium, and manganese between patients and controls. The results show that trace elements may play a significant role in the pathogenesis of myopia. Further studies should pay more attention to determine the effect of trace element on children myopia.

Reference levels of trace elements in hair samples from children and adolescents in Madrid, Spain

2017 ◽  
Vol 43 ◽  
pp. 113-120 ◽  
Author(s):  
María Teresa Llorente Ballesteros ◽  
Irene Navarro Serrano ◽  
Silvia Izquierdo Álvarez
Keyword(s):  
Trace Elements ◽  
Children And Adolescents ◽  
Reference Levels ◽  
Hair Samples

scholarly journals Cumulative Effect and Content Variation of Toxic Trace Elements in Human Hair around Xiaoqinling Gold Mining Area, Northwestern China

2021 ◽  
Vol 18 (4) ◽  
pp. 2074
Author(s):  
Min Yang ◽  
Youning Xu ◽  
Hailing Ke ◽  
Huaqing Chen
Keyword(s):  
Trace Elements ◽  
Trace Element ◽  
Human Health ◽  
Human Hair ◽  
Gold Mining ◽  
Polluted Area ◽  
Toxic Trace Elements ◽  
Mining Areas ◽  
Hair Samples ◽  
Toxic Trace Element

The harm of toxic trace element polluted living environments to human health in mining areas has attracted extensive attention. In this study, human hair samples from a toxic trace element polluted area (village A) in a mineral processing area collected in 2015 and 2019 were studied in detail and the nonpolluted human hair samples from a contrast area (village B) with a relatively clean environment were also collected for comparison. The Hg and As in human hair samples were analyzed by Atomic Fluorescence Spectrometry (AFS) and the Pb, Cd, Cr, and Cu in human hair samples were analyzed by Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The single cumulative index (Pi) and the Nemerrow index (Pz) were used to evaluate the single and comprehensive cumulative pollution index. The results indicated that the average toxic trace element contents in human hair from different ages in the polluted area exhibited certain statistical significance. The average single cumulative indexes indicated a significant accumulation of Hg, Pb, and Cd in human hair of both genders and different ages from the polluted area, and the comprehensive cumulative pollution indexes revealed higher accumulation of toxic trace elements in the hair of males than in females. In general, the content of toxic trace elements in human hair from polluted area was still growing in accumulation. The high content of toxic trace elements in human hair shows a notable correlation with human health, and the environmental pollution in gold mining areas is seriously harmful to human health.

Interaction between carcinogenic and anti-carcinogenic trace elements in the scalp hair samples of different types of Pakistani female cancer patients

2015 ◽  
Vol 439 ◽  
pp. 178-184 ◽  
Author(s):  
Sham Kumar Wadhwa ◽  
Tasneem Gul Kazi ◽  
Hassan Imran Afridi ◽  
Farah Naz Talpur ◽  
Naeemullah
Keyword(s):  
Trace Elements ◽  
Cancer Patients ◽  
Scalp Hair ◽  
Hair Samples ◽  
Female Cancer Patients ◽  
Different Types
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