The Essential Chemical Elements of Plants

1886 ◽  
Vol 21 (524supp) ◽  
pp. 8371-8373
Author(s):  
Thomas Jamieson
Keyword(s):  
Chemical Elements ◽  
Essential Chemical

scholarly journals Selected Essential and Toxic Chemical Elements in Hypothyroidism—A Literature Review (2001–2021)

2021 ◽  
Vol 22 (18) ◽  
pp. 10147
Author(s):  
Anna Błażewicz ◽  
Patrycja Wiśniewska ◽  
Katarzyna Skórzyńska-Dziduszko
Keyword(s):  
Toxic Elements ◽  
Web Of Science ◽  
Chemical Elements ◽  
Physiological State ◽  
Potentially Toxic Elements ◽  
The Body ◽  
Toxic Chemical ◽  
Thyroid Status ◽  
Hormone Synthesis ◽  
Essential Chemical

Thyroid hormones are known for controlling metabolism of lipids, carbohydrates, proteins, minerals, and electrolytes and for regulating body temperature. Normal thyroid status depends on the chemical/elemental composition of body fluids and tissues, which changes depending on physiological state, lifestyle and environment. A deficiency or excess of certain essential chemical elements (selenium, zinc, copper, iron or fluorine) or exposure to toxic (cadmium or lead) or potentially toxic elements (manganese or chromium) interacts with thyroid hormone synthesis and may disturb thyroid homeostasis. In our review, accessible databases (Scopus, PubMed and Web of Science) were searched for articles from 2001–2021 on the influence of selected chemical elements on the development of hypothyroidism. Our review adopted some of the strengths of a systematic review. After non-eligible reports were rejected, 29 remaining articles were reviewed. The review found that disruption of the physiological levels of elements in the body adversely affects the functioning of cells and tissues, which can lead to the development of disease.

scholarly journals Concentration of essential chemical elements in whole blood and in paranasal sinuses mucosa is related to chronic rhinosinusitis severity in children

2021 ◽  
Vol 6 (4) ◽  
pp. 9-13
Author(s):  
Svetlana I. Alekseenko ◽  
Vladimir V. Dvoryanchikov ◽  
Anatolii V. Skalny ◽  
Igor A. Anikin ◽  
Vadim S. Isachenko ◽  
...  
Keyword(s):  
Chronic Rhinosinusitis ◽  
Whole Blood ◽  
Chemical Element ◽  
Chemical Elements ◽  
Essential Element ◽  
Sinus Surgery ◽  
Control Group ◽  
Healthy Children ◽  
Blood Calcium ◽  
Essential Chemical

Objectives to evaluate the association between essential chemical element levels in whole blood and in pathologic mucosa and chronic rhinosinusitis severity in children. Material and methods. A total of 154 children aged from 6 to 17 years were examined. Among them, 88 children had chronic rhinosinusitis (CRS) and underwent functional endoscopic sinus surgery (FESS). The 66 healthy children were included in the control group. Life quality was assessed using SNOT-20 (Sino-Nasal Outcome Test-20). Endoscopic and computer tomography findings were evaluated using Lund Kennedy and Lund Mackay scales, respectively. The assessment of essential element levels in whole blood samples was performed using inductively-coupled plasma mass-spectrometry. Results. The obtained data demonstrate that total SNOT-20 scores in CRS patients were 68% higher than in controls. At the same time, whole blood calcium, selenium, zinc, and magnesium levels were 6%, 28%, 20%, and 3% lower than the respective control values. The analysis of pathologic mucosa demonstrated that the chemical element contents were reducing in the following order: Ca Mg = Fe Zn Cu Mn Se. However, only whole blood selenium level correlated significantly with its tissue level. In multiple regression models, the whole blood Se level was inversely associated with SNOT-20 and Lund Mackay total scores. Conclusion. Therefore, the obtained data allow to propose the potential role of altered calcium, magnesium, zinc and selenium metabolism in CRS progression.

Diagnosis and correction of the elemental status as the basis of a personalized preventive approach to reducing the frequency of socially significant diseases of civilization in the territories

2020 ◽  
pp. 81-87
Author(s):  
A. Skalny
Keyword(s):  
Chemical Elements ◽  
Federal District ◽  
Modern Medicine ◽  
Scientific Development ◽  
The Past ◽  
Elemental Status ◽  
Promising Area ◽  
Essential Chemical ◽  
Chemical Imbalance

The study of the biological role of macro- and microelements over the past decades is one of the relevant and promising areas of medicine. There is now undeniable evidence that correction of chemical imbalance is one of the most important factors in improving health and preventing disease, especially in the form of personalized prevention programs. The study of the elemental “portrait” of the population in individual regions with the aim of scientific development and implementation of measures to eliminate the identified mineral deficiency as a strategic tool for the prevention of chronic non-infectious diseases is a promising area of modern medicine. The basis for assessing the elemental profiles of the population of the Central Federal District was information on the elemental composition of hair as a bio-substrate for analysis, which is most suitable for screening studies. The study revealed mass deficiency of essential chemical elements — macroelements, as well as deficiency of Fe, Zn, Cu, Mn, Co, Cr, Se, I studied in this work, which is more common than excess of minerals and intoxication, and presents a wider risk for human health now.

Comparison of Micromechanical Parameters of Different Dental Implants Using Nanoindentation

2015 ◽  
Vol 662 ◽  
pp. 134-137
Author(s):  
Aleš Jíra ◽  
Vlastimil Králík ◽  
František Denk ◽  
Lubomír Kopecký
Keyword(s):  
Dental Implants ◽  
Chemical Elements ◽  
Heterogeneous Structure ◽  
Element Analysis ◽  
Lateral Direction ◽  
Reduced Modulus ◽  
Modified Surface ◽  
The Difference ◽  
Essential Chemical ◽  
The Individual

The aim of this work is the description of microstructure and comparison of micromechanical properties of cylindrical shaped intraosseous parts of dental implants with plasma modified surface and with threaded modification. Differences in elastic parameters (such as reduced modulus (Er) and hardness (H)) of investigated implants within the supporting part of the shaft and surface layer in two different directions (proximal and lateral) are compared using experimental method of nanoindentation. Machined implants of titanium alloys Ti6Al4V with plasma modified surface of sprayed titanium with hydroxyapatit (HA) Ca10(PO4)6(OH)2 from different batches of product were available for measurements. SEM element analysis revealed a heterogeneous structure and various concentrations of the essential chemical elements (C, O, P, Ca) on the surface of implants. Results of elastic moduli and hardness was monitored in different locations. On a large statistical set of measurements was indicated that average reduced modulus of implant shafts of titanium alloy is approximately 126 GPa. Differences of Er in case of peripheral hydroxyapatite layer are in range of ~145 GPa – ~163 GPa according to the exact composition of surface modification in the individual batches of the product. The difference of measured values on individual samples in a proximal/lateral direction is approximately 10%.

scholarly journals HYGIENIC ASSESSMENT OF THE IMPACT OF REGIONAL PECULIARITIES OF NUTRITION ON HEALTH OF STUDENTS

2019 ◽  
Vol 96 (9) ◽  
pp. 909-912 ◽  
Author(s):  
I. B. Ushakov ◽  
I. E. Esaulenko ◽  
V. I. Popov ◽  
Tatyana N. Petrova
Keyword(s):  
Higher Education ◽  
Chemical Elements ◽  
Morbidity Rate ◽  
Essential Chemical ◽  
High Level ◽  
Medical University ◽  
The Impact

There are presented results of the study of the hygienic assessment of actual nutrition of students. On the basis of obtained results there was established the imbalance of the consumption of essential chemical elements - essential macronutrients and micronutrients (vitamins and minerals). There is considered the problem of the attitude of contemporary students to nutrition and nutrition peculiarities of students. The results allow make a conclusion that the nutrition of students at the medical University cannot be considered as satisfactory. There were revealed serious violations in the diet regime and nutrition ration. Against background of these violations there was noted the high level of overall morbidity rate, including nutrition-related diseases. This leads to the relevance of the development and implementation of the program to optimize the nutrition in the system of higher education.

scholarly journals The Effect of Dietary Humic Preparations on the Content of Essential and Non-Essential Chemical Elements in Hen Eggs

Animals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1252
Author(s):  
Zbigniew Dobrzański ◽  
Katarzyna Chojnacka ◽  
Tadeusz Trziszka ◽  
Sebastian Opaliński ◽  
Łukasz Bobak ◽  
...  
Keyword(s):  
Trace Elements ◽  
Mineral Content ◽  
Chemical Elements ◽  
Dietary Supplementation ◽  
Egg Yolk ◽  
Formation Processes ◽  
Feed Mixture ◽  
Cage System ◽  
Egg Formation ◽  
Essential Chemical

This study was conducted to determine the effect of dietary supplementation with two humic preparations, Humokarbowit (HKW) and Humobentofet (HBF), on the mineral content of the albumen and egg yolk of Lohmann Brown hens. The content of macroelements (Ca, K, Mg, Na, P, S), microelements (Al, Ba, Cu, Fe, I, Mn, Si, Sr, Zn) and trace elements (Ag, As, Be, Bi, Cd, Co, Cr, Ga, Hg, Li, Mo, Ni, Pb, Rb, Sb, Se, Sn, Ti, Tl, V, W, Y and Zr) in the feed mixture (FM), albumen and yolk were presented. The material was collected from laying hens kept in a cage system in two groups, control (C) and enriched (E), with standard feed and feed enriched with humic preparations, respectively. The enriched feed mixture was characterised by a significantly higher Ag, Ba, Be, Bi, Co, Fe, Ga, Hg, K, Mg, Ni, S, Sb, Si, Zn and Zr content compared to the standard, basal mixture. Only some of these elements were found in significantly increased levels in albumen (Bi, Co, Ni, S) and yolk (Bi, Fe, K, Sb). Another noteworthy finding was a significantly lower concentration of Na in the content of eggs from the E-Group, which corresponds to the content of this important macronutrient in the feed. In addition, a significant increase in the concentration of elements such as Al, I, Li, Sr, Ti, Tl, Y, W was noted with a reduction in Cd, Cr, Hg, Mn, Rb, Sn in Group-E, which indicates a complicated egg formation processes, including biotransfer-essential and non-essential chemical elements.

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