Abstract：
:A survey of mercury (Hg) and selenium (Se) contents was performed in fish collected from lakes located in two National Parks of the northern patagonian Andean range. Two native species, catfish (Diplomystes viedmensis) and creole perch (Percichthys trucha), and three introduced species, brown trout (Salmo trutta), rainbow trout (Oncorhynchus mykiss), and brook trout (Salvelinus fontinalis), were caught from lakes Nahuel Huapi, Moreno, Traful, Espejo Chico, and Guillelmo belonging to Nahuel Huapi National Park and from lakes Futalaufquen and Rivadavia, Los Alerces National Park. In lake Moreno, fish diet items were analyzed and rainbow trout grown in a farm. Hg and Se were measured in muscle and liver tissues by instrumental neutron activation analysis. The average concentrations in muscle of Hg for all species, ages, and lakes are between 0.4 to 1.0 microg g(-1) dry weight (DW) with a few fish, mainly native, exceeding the United States Environmental Protection Agency health advisory for freshwater fish limited consumption, and from 0.8 to 1.5 microg g(-1) DW for Se. Average concentrations in liver of Hg in all species range from 0.4 to 0.9 microg g(-1) DW. Brown trout, the top predator in these lakes, showed the lowest average Hg burden in both tissues. Se concentrations in the liver of brown and rainbow trout, up to 279 microg g(-1) DW, are higher than those expected for nearly pristine lakes, exceeding 20 microg g(-1) DW, the threshold concentration associated with Se toxicity. These species show lower Hg contents in muscle, suggesting a possible detoxification of Hg by a Se-rich diet. Creole perch and velvet catfish livers have lower Se concentrations, with a narrower span of values (2.3 to 8.5 microg g(-1) and 3.3 to 5.5 microg g(-1) DW respectively).
journal_name
Biol Trace Elem Resjournal_title
Biological trace element researchauthors
Arribére MA,Ribeiro Guevara S,Bubach DF,Arcagni M,Vigliano PHdoi
10.1007/s12011-007-8059-6subject
Has Abstractpub_date
2008-04-01 00:00:00pages
42-63issue
1eissn
0163-4984issn
1559-0720journal_volume
122pub_type
杂志文章abstract：:The toxic effect of Pb2+ has been studied in eukaryotic cells by using Tetrahymena as a target. The maximum power (P(m)) and the growth rate constant (k) were determined, which showed that values of P(m) and k were linked to the concentration (C) of Pb2+. The addition of Pb2+ caused a decrease of the maximum heat prod...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-007-0055-3
更新日期：2007-11-01 00:00:00
abstract：:No specific treatment for COVID-19 infection is available up till now, and there is a great urge for effective treatment to reduce morbidity and mortality during this pandemic. We aimed to evaluate the effect of combining chloroquine/hydroxychloroquine (CQ/HCQ) and zinc in the treatment of COVID-19 patients. This was ...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-020-02512-1
更新日期：2020-11-27 00:00:00
abstract：:Calcium fructoborate (CFB) has been reported as supporting healthy inflammatory response. In this study, we assess the effects of CFB on blood parameters and proinflammatory cytokines in healthy subjects. This was a randomized, double-blinded, placebo-controlled trial. Participants received placebo or CFB at a dose of...
journal_title：Biological trace element research
pub_type： 杂志文章,随机对照试验
doi：10.1007/s12011-014-0155-9
更新日期：2015-02-01 00:00:00
abstract：:Magnesium is the second most abundant intracellular cation and is a fundamental cofactor in a multitude of cellular enzymatic reactions. Magnesium deficiency causes diverse clinical features predominantly due to cardio- and neurotoxicity. We describe a case of severe hypomagnesaemia associated with intermittent downbe...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-010-8757-3
更新日期：2011-08-01 00:00:00
abstract：:The influence of injection periods of 3-(1H-pyrrol-2-yl)-1H-indazole regarding vitamins A, E, C, selenium (Se), malondialdehyde (MDA) levels, and glutathione peroxidase (GSH-Px) activity in rats has been investigated. The substance was given by subcutaneous injection at 20 mg/kg every other day for a total of 15 injec...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-009-8517-4
更新日期：2010-07-01 00:00:00
abstract：:A double label procedure with 57Co and 58Co has been developed for detailed in vivo studies of erythrocyte survival. A well-type Ge detector is used in the measurements. The activities necessary for these experiments are very low, and the associated dose received by the test persons can be neglected. ...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/BF02992664
更新日期：1990-07-01 00:00:00
abstract：:Selenium is known to be a neuroprotective agent in respect to a number of neuronal diseases and pain. The aim of this study was to evaluate the neuroprotective effect of the oral administration of selenium nanoparticles in rats with spinal cord injury (SCI). Forty adult female rats were randomly assigned to two equal ...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-018-1371-5
更新日期：2019-01-01 00:00:00
abstract：:Lung cancer is seriously threatening human health and exposure to trace metals is the most important aetiology for lung cancer. Selected essential/toxic metals (Ca, Mg, Na, K, Fe, Zn, Cu, Sr, Li, Co, Mn, Ni, Cr, Cd and Pb) are measured in the scalp hair and nails of lung cancer patients and controls by atomic absorpti...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-014-9942-6
更新日期：2014-06-01 00:00:00
abstract：:The present study was undertaken to evaluate methylmercury-induced alterations in hepatic enzymes and oxidative stress markers in liver tissue of rainbow trout (Oncorhynchus mykiss) by using a perfusion method, and to explore possible protective effect of vitamin C against these alterations. Forty-eight fish were divi...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-015-0241-7
更新日期：2015-05-01 00:00:00
abstract：:Quercetin, a plant-derived flavonoid, is frequently used as an antioxidant for efficient anti-oxidative capacity. However, whether quercetin has protective effects on goat sperm and preimplantation embryos against Cd2+-induced oxidative injury is still unclear. So, we researched the influence of quercetin on goat sper...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-018-1255-8
更新日期：2018-10-01 00:00:00
abstract：:The effectiveness and success of antituberculosis therapy is mainly measured by its ability to identify the organism in the sputum. In certain cases, available tuberculosis tests are not satisfactory and do not provide enough information on the effectiveness of antituberculosis therapy. Copper (Cu), zinc (Zn), and sel...
journal_title：Biological trace element research
pub_type： 临床试验,杂志文章
doi：10.1385/BTER:95:1:65
更新日期：2003-10-01 00:00:00
abstract：:Recent publications in Japan suggest that Cd in river beds and locally harvested rice tend to be higher in seven prefectures in the north-eastern part on the coast of the Sea of Japan (the high-Cd zone). The present study was initiated to investigate the current level of exposure to Cd and possible health effects amon...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-010-8646-9
更新日期：2011-02-01 00:00:00
abstract：:The hypothesis that oxygen-derived free radicals play an important role in myocardial ischemic and reperfusion injury has received a lot of support. In the presence of catalytic amounts of transition metals such as iron, superoxide anions, and hydrogen peroxide can be transformed into a highly reactive hydroxyl radica...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/BF02917218
更新日期：1994-04-01 00:00:00
abstract：:Selenium (Se) deficiency in the experimental models, Coturnix coturnix japonica and Corcyra cephalonica, resulted in impaired mitochondrial substrate oxidations and lowered thiol levels. Studies with respiratory inhibitors confirmed reduced mitochondrial electron transport enzyme activities, especially at cytochrome c...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/BF02784077
更新日期：1996-03-01 00:00:00
abstract：:Previous studies showed the attenuation of both morphine-dependence and morphine-place preference by zinc. Conditioned place preference and aversion are experimental models frequently used to test the reward-stimulating, respectively the aversive effects induced by different stimuli or substances. Addictive substances...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-017-0995-1
更新日期：2017-11-01 00:00:00
abstract：:The results obtained in this study demonstrated that experimentally induced alimentary muscular dystrophy (MD) in Cobb 500 broiler chickens resulted in increased plasma concentrations of malondialdehyde (MDA), deviations in activities of erythrocyte antioxidant enzymes Cu,Zn-SOD (decrease), and CAT (increase) as well ...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-010-8782-2
更新日期：2011-09-01 00:00:00
abstract：:The present study was undertaken to evaluate the in vitro availability of chemically varying forms of selenium (Se), supplemented in cow's milk. Two inorganic (selenite and selenate) and two organic (seleno-methionine [Se-Met] and seleno-cystine [Se-Cys]) Se sources were evaluated. The in vitro availability was estima...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/BF02910666
更新日期：1997-07-01 00:00:00
abstract：:Zinc, copper, and selenium statuses were reported to be linked to the development of chronic diseases, especially coronary heart disease (CHD). Metabolic syndrome, a known CHD risk factor, was found to be highly prevalent in Lebanon. Nevertheless, no data are available on the statuses of plasma zinc, copper, and selen...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-008-8112-0
更新日期：2008-07-01 00:00:00
abstract：:Cactus (Opuntia ficus-indica) is a xerophyte plant that belongs to the Cactaceae family. The present study was designed to investigate the possible protective effects of cactus cladodes extract (CCE) on sodium dichromate-induced testis damage in adult male Wistar rats. For this purpose, CCE at a dose of 100 mg/kg was ...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-014-9969-8
更新日期：2014-06-01 00:00:00
abstract：:We explored the synergistic effect of serine combined with several selenocompounds or used alone on the expression of selenoprotein P (SelP) and glutathione peroxidase (GPx) in this study. We first compared the SelP and GPx expression difference between HepG2 and Hela cells treated with serine and finally chose HepG2 ...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-016-0665-8
更新日期：2016-10-01 00:00:00
abstract：:Cadmium (Cd) exposure has been recognized to result in a wide variety of cellular responses, including oxidative stress and body weight loss. The aim of the present study was to examine the effect of lycopene supplementation on the antioxidant defense system, lipid peroxidation (LPO) level, nitric oxide (NO), tumor ne...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-007-0027-7
更新日期：2007-08-01 00:00:00
abstract：:Variations in trace element concentration in the head and facial hair of five individuals with ever-increasing amounts of white hair were examined. Hair was collected from the scalp, cheeks, and chin from one donor on a regular basis since 1984. Samples were separated into white and pigmented fractions, and analyzed a...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/BF02992728
更新日期：1990-07-01 00:00:00
abstract：:Responses of photosystem I and II activities of Microcystis aeruginosa to various concentrations of Cu(2+) were simultaneously examined using a Dual-PAM-100 fluorometer. Cell growth and contents of chlorophyll a were significantly inhibited by Cu(2+). Photosystem II activity [Y(II)] and electron transport [rETRmax(II)...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-014-0039-z
更新日期：2014-08-01 00:00:00
abstract：:Glutathione peroxidase (GPx) is the prototypical eukaryotic selenoprotein, with the rare amino acid selenocysteine (Sec) at the enzyme active site, encoded by the UGA codon in RNA. A DNA virus, Molluscum contagiosum, has now been shown to encode a functional selenium-dependent GPx enzyme. Using modifications of conven...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/BF02783852
更新日期：1999-11-01 00:00:00
abstract：:Biological half-lives of bromine in 15 different organs and tissues of the rat, in addition to the whole-body half-life, were determined by measuring the radioactive concentration of 82Br-bromide in samples of tissues collected at the time intervals of 12-396 h from animals that continuously (up to 17 d) received 82Br...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1385/BTER:76:1:57
更新日期：2000-07-01 00:00:00
abstract：:According to undiscovered toxicity and safety of magnesium oxide nanoparticles (MgO NPs) in isolated pancreatic islet cells, this study was designed to examine the effects of its various concentrations on a time-course basis on the oxidative stress, viability, and function of isolated islets of rat's pancreas. Pancrea...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-016-0754-8
更新日期：2017-01-01 00:00:00
abstract：:The kidney has been regarded as a critical organ of toxicity induced by acute exposure to hexavalent chromium [Cr(VI)] compounds. Reactive intermediates and free radicals generated during reduction process might be responsible for Cr(VI) toxicity. In this study, the effects of pretreatment or posttreatment of taurine ...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1385/BTER:102:1-3:209
更新日期：2004-01-01 00:00:00
abstract：:Accumulation of lanthanum oxide nanoparticles (La2O3NPs) in the femur bone of rats after 30 days of oral administration was explored. Also, the influence of La2O3NPs on macro and trace elements in the rats' femur bone was assessed. Inductively coupled plasma mass spectrometry (ICP-MS) and inductively coupled plasma op...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-019-01907-z
更新日期：2020-07-01 00:00:00
abstract：:The aim of this research was to assess plasma magnesium (Mg) concentration, the frequencies of activated T CD4+ and T CD8+ lymphocytes and B lymphocytes in adolescents with hyperthyroidism due to Graves' disease (GD), and to assess changes in the above-mentioned parameters during methimazole (MMI) treatment. The frequ...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-013-9690-z
更新日期：2013-06-01 00:00:00
abstract：:This study investigated the effects of ethanol (EtOH) on manganese (Mn)-induced striatal toxicity in rat by evaluating the neurobehavioral changes, biochemical and molecular events in rats exposed to Mn alone at 30 mg/kg, or their combination with EtOH at 1.25- and 5-g/kg body weight for 35 consecutive days. Locomotiv...
journal_title：Biological trace element research
pub_type： 杂志文章
doi：10.1007/s12011-018-1587-4
更新日期：2019-09-01 00:00:00
