scholarly journals A spectrographic analysis of animal tissues

1931 ◽  
Vol 108 (755) ◽  
pp. 157-173 ◽  
Keyword(s):  
Chemical Elements ◽  
Wide Distribution ◽  
Living Matter ◽  
Animal Tissues ◽  
Animal Kingdom ◽  
Chemical Methods ◽  
Iron Copper ◽  
Quantitative Basis ◽  
Copper Zinc ◽  
Tissue Contents

It is recognised that, in addition to those chemical elements which are known to be necessary and essential constituents of protoplasm, others have a wide distribution in living matter. Such are iron, copper, zinc, aluminium and manganese. Besides these, a number of additional elements have been recorded as occurring spasmodically in animal and plant tissues. Hitherto the spectro-scope has rarely been used as a method of detecting uncommon elements in animal tissues; yet the spectroscope supplies a valuable tool for making a wide survey of tissue contents with a rapidity of which chemical methods do not allow. The present paper is the first report on such a survey, carried out on a quantitative basis. The field to be covered is, of course, vast. As a beginning, we have restricted ourselves mainly to annelids, in which whole animals were analysed, and molluscs, the separate organs of which were dissected out and dealt with. In addition, a limited amount of other material has been studied, including human organs, insects, and a few representatives of other groups. As the work progresses it is intended to investigate the principal divisions of the animal kingdom.

scholarly journals CHANGES IN THE MINERAL STATUS IN THE ORGANISMS OF YOUNG ATHLETES WITHIN A ONE-YEAR TRAINING CYCLE

2016 ◽  
Vol 2 (101) ◽  
pp. 38-43
Author(s):  
Tatiana Krupskaja ◽  
Ludmila Loseva ◽  
Marija Pushkareva ◽  
Olga Tsivunchyk ◽  
Slavamir Anufrik ◽  
...  
Keyword(s):  
Trace Elements ◽  
Hair Sample ◽  
Chemical Elements ◽  
Young Athletes ◽  
Training Cycle ◽  
Iron Copper ◽  
Hair Samples ◽  
Copper Zinc ◽  
One Year ◽  
Calcium Iron

Background. Concentration of trace elements in the hair allows to get an idea how they are taken by the organism over a long period of time and to study relative correlations with different genetic, dietary and environmental factors. Research aim was to identify changes in the macro- and microelement status for young athletes involved in different sports activities depending on the preparation period within one-year training cycle. Methods. A total of 78 young athletes aged 12–17 years, 32 of which were swimmers (group I), 17 – tennis players (group II) and 29 – Taekwondo athletes (group III) participated in the study. Biological material (hair samples), the volume of 0.1–0.15 g were taken for experimental studies in three periods of time: preparatory, competitive and transition period within a one-year training cycle. Hair samples were analyzed using the method of X-ray fluorescence (XRF) in order to detect multiple elements. For quantitative analysis, 8 chemical elements (sulfur, potassium, calcium, iron, copper, zinc, strontium and selenium) were determined in a single hair sample. Results and conclusion. A non-invasive method to determine mass fraction of the chemical elements (sulfur, potassium, calcium, iron, copper, zinc, lead, chlorine, bromine, strontium, selenium) in a hair sample is an informative method for assessing the physiological response of the body (young athletes) with physical activity at different stages of training. The statistical analysis of the obtained results revealed the dependence of the concentration of trace elements from a kind of sports activity and stage of preparation for young athletes.

Synthesis of chelated compounds of amino acids with metals

2021 ◽  
Author(s):  
A.A. Yamskikh ◽  
L.A. Ivanova
Keyword(s):  
Amino Acids ◽  
Physicochemical Properties ◽  
Alkaline Earth ◽  
Alkaline Earth Metals ◽  
Iron Copper ◽  
Copper Zinc ◽  
Glycine Synthesis

The article describes the reactions of glycine synthesis with alkaline, alkaline-earth and divalent 3-d metals, which were carried out during the experiment. Hydroxides or sulfates of lithium, magnesium, calcium, manganese, iron, copper, zinc, cobalt and sodium were used as reagents for the synthesis. The physicochemical properties of the obtained compounds were studied. Keywords: chelates, glycinates of alkaline and alkaline earth metals, glycinates of divalent 3-d metals.

Iron, Copper, Zinc and Selenium Concentrations and their Interaction in Organs of White Nose Disease of Raccoon Dogs

2012 ◽  
Vol 7 (11) ◽  
pp. 1110-1119 ◽  
Author(s):  
Zhijun Hou ◽  
Meiying Shen ◽  
Hongliang Chai ◽  
Jianzhang Ma ◽  
Yuping Hua
Keyword(s):  
Iron Copper ◽  
Copper Zinc ◽  
Raccoon Dogs

Preproenkephalin B-derived opioid peptides in human phaeochromocytomas

1987 ◽  
Vol 114 (3) ◽  
pp. 446-451 ◽  
Author(s):  
Toshihiko Yanase ◽  
Hajime Nawata ◽  
Ken-ichi Kato ◽  
Hiroshi Ibayashi
Keyword(s):  
Plasma Concentration ◽  
Opioid Peptides ◽  
Significant Positive Correlation ◽  
Plasma Catecholamines ◽  
Wide Distribution ◽  
Molecular Forms ◽  
Concomitant Increase ◽  
Tissue Contents

Abstract. We demonstrated the presence and the secretion in vivo and in vitro of immunoreactive preproenkephalin B-derived opioid peptides (α-neoendorphin, dynorphin and leumorphin) in human phaeochromocytomas. In senventeen human phaeochromocytomas and two human adrenal medullas, the tissue contents of immunoreactive preproenkephalin B-derived opioid peptides (α-neoendorphin, dynorphin and leumorphin) and leu-enkephalin were studied by specific RIAs. Compared with a remarkable wide distribution in amounts of immunoreactive leu-enkephalin (1063 ± 437 pg/mg, mean ± se), small amounts of immunnoreactive α-neoendorphin (22.6 ± 6.4 pg/mg) and dynorphin (8.5 ± 1.2 pg/mg) were detected in all seventeen human phaeochromocytomas and the two human adrenal medullas. Leumorphin-like immunoreactivity was detected in only four tumours. Gel chromatographic studies revealed the presence of preproenkephalin B-derived peptides and their high molecular forms. A significant positive correlation between the tumour tissue contents of immunoreactive α-neoendorphin and of dynorphin was observed. Nicotine (10−5, 10−4 mol/l) significantly stimulated the secretion of immunoreactive α-neoendorphin and dynorphin as well as leuenkephalin and catecholamines from cultured human phaeochromocytoma cells. Administration of 1 mg of glucagon to a patient with medullary phaeochromocytoma induced a rapid increase in the plasma concentration of immunoreactive α-neoendorphin with a concomitant increase in plasma catecholamines. These results indicate the presence of preproenkephalin B-derived opioid peptides in human phaeochromocytomas and human adrenal medullas and their secretion in human phaeochromocytomas.

HYPOTHESIS ON THE SYNERGISM OF RADIATION AND WATER FILTERS IN THE FORMATION OF BIOOBJECTS

2019 ◽  
Vol 21 (1) ◽  
pp. 53-58
Author(s):  
B.L. Oksengendler ◽  
S.E. Maksimov ◽  
S.U. Norbaev ◽  
L.Yu. Akopyan ◽  
M.V. Konoplyova ◽  
...  
Keyword(s):  
Periodic Table ◽  
Chemical Elements ◽  
Electron Shell ◽  
Living Matter ◽  
Heavy Atoms ◽  
The Third ◽  
Water Filters ◽  
Selection Of ◽  
Electron Shells

The article contains a hypothesis on the dominance of chemical elements of top periods of the Periodic Table in living matter. The idea is that the elements of the third and next periods of the table, in contrast to the first two periods, have larger number of subvalent electron shells. Because of this, ionization of the k-electron shell by radiation (kosmic and terrestrial) in the heavy atoms always leads to the Auger cascade, which causes the destruction of molecular chains. This mechanism can play a role of the radiation filter in the selection of light chemical elements in living matter in addition to the mechanism of hydrolytic filter (G.R. Ivanitskii).

X-ray Total Reflection Fluorescence Analysis of Iron, Copper, Zinc, and Bromine in Human Serum

1988 ◽  
Vol 42 (7) ◽  
pp. 1250-1253 ◽  
Author(s):  
C. T. Yap
Keyword(s):  
Trace Element Analysis ◽  
Fluorescence Analysis ◽  
Total Reflection ◽  
Element Analysis ◽  
X Ray ◽  
Iron Copper ◽  
Control Serum ◽  
Human Sera ◽  
Copper Zinc ◽  
Good Agreement

The method of total reflection fluorescence analysis was used to obtain concentrations of iron, copper, zinc, and bromine in human sera. It was first applied to the commercial control-serum preparation known as Seronorm, and the results obtained were in good agreement with quoted values. The method was then used to determine the concentrations of iron, copper, zinc, and bromine in a random sampling of 62 individuals in an essentially Chinese population. The results are discussed. We feel that this is a suitable method for trace-element analysis of blood in an average laboratory. It is rapid, simple, and economical, besides being multielemental and nondestructive and requiring very small quantities—which seems to be a must in pediatrics.

COMPARISON ON TRACE ELEMENTS IN SQUID STATOLITHS OF DIFFERENT SPECIES' ORIGIN: AS AVAILABLE KEY FOR TAXONOMIC AND PHYLOGENETIC STUDY

1997 ◽  
Vol 07 (03n04) ◽  
pp. 141-146 ◽  
Author(s):  
Y. IKEDA ◽  
N. ARAI ◽  
W. SAKAMOTO ◽  
H. KIDOKORO ◽  
A. YATSU ◽  
...  
Keyword(s):  
Trace Elements ◽  
Coastal Water ◽  
Taxonomic Position ◽  
Phylogenetic Study ◽  
Dosidicus Gigas ◽  
Coastal Habitat ◽  
Species Origin ◽  
Iron Copper ◽  
Copper Zinc ◽  
Sthenoteuthis Oualaniensis

Trace elements in squid statoliths were analyzed by PIXE for the following fourteen species in five families of different habitat origin: Ommastrephidae, Ommastrephes bartrami, Dosidicus gigas, Sthenoteuthis oualaniensis; Gonatidae, Gonatopsis makko, G. borealis, Berryteuthis magister; Loliginidae, Loligo bleekeri, L. duvaucelii, L. chinensis, L. edulis and Sepioteuthis lessoniana; Sepiidae, Sepia aculeata and Sepiella inermis; Sepiolidae, Rossia pacifica, Manganese, iron, copper, zinc and strontium were detected from statoliths of all species examined. Among these trace elements, Sr is the highest in concentration. Variation of statoliths Sr concentration reflects taxonomic position and the habitat of specimens. In Ommastrephids and Gonatids, that have oceanic habitat, statoliths Sr concentration is relatively high whereas that of Loliginids and Sepiids, that have coastal habitat, is comparatively low. This fact supports our previous report on this subject. R. pacifica exceptionally shows high statoliths Sr concentration although this species inhabits in coastal water.

Sign in / Sign up

Export Citation Format

Share Document