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Wyszukujesz frazę "arsenic toxicity" wg kryterium: Temat

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    Wyświetlanie 1-7 z 7
    Tytuł:
    Study of arsenic exposure in oral/oropharyngeal carcinoma in West Bengal
    Autorzy:
    Pal, Pritha
    Raychowdhury, Ranjan
    Dolai, Tuphan K.
    Roy, Sanchita
    Dastidar, Rinini
    Halder, Ajanta
    Powiązania:
    https://bibliotekanauki.pl/articles/2161855.pdf
    Data publikacji:
    2017-03-30
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    Apoptosis
    risk factor
    micronuclei
    oral cancer
    arsenic toxicity
    West Bengal
    Opis:
    Objectives To study any possible correlation between arsenic toxicity and the development of oral carcinoma in West Bengal population. Material and Methods Ethical clearance for this study was obtained from the Vivekananda Institute of Medical Sciences. Out of 30 785 patients attending our hospital from November 2012 to July 2015, 107 cases and 50 control individuals were selected. The hair and buccal smear samples were obtained upon their consent for the purpose of the analysis of arsenic count and cytogenetic damage, respectively. Results Ninety-six percent of cases came from the highly arsenic affected districts and 81.3% showed their arsenic count above the safe limit (0.8 μg/g) whereas 96% of the controls’ arsenic count was within the safe limit. The study showed a significant difference of the micronuclei and apoptosis frequency between the cases and controls. Conclusions The difference of micronuclei and apoptosis frequency between cases and controls was significant. The maximum number of cases came from highly arsenic affected areas and a higher percentage of cases showed elevated arsenic count, as compared to controls, which may indicate a possible link between arsenic toxicity and this disease. However, a larger sample size is required for a proper correlation. Int J Occup Med Environ Health 2017;30(2):271–279
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2017, 30, 2; 271-279
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Environmental, economic and health perspectives of arsenic toxicity in Bengal Delta
    Autorzy:
    Bhattacharya, Sayan
    Ghosh, Uday Chand
    Powiązania:
    https://bibliotekanauki.pl/articles/1194026.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Arsenic
    Bengal Delta
    Bioaccumulation Groundwater
    Phytoremediation
    Toxicity
    Opis:
    Arsenic is a metalloid of great environmental concern because of its highly toxic nature and wide abundance. Arsenic contamination in groundwater has been reported in Bangladesh, India, China, Taiwan, Vietnam, USA, Argentina, Chile and Mexico. The clinical symptoms of arsenic toxicity in human body include skin itching to sun rays, burning and watering of the eyes, weight loss, loss of appetite, weakness, fatigue, limited physical activities and working capacities, chronic respiratory problems, moderate to severe anemia etc. The Bengal basin is regarded to be the most acutely arsenic infested geological province in the world. Heavy withdrawal of groundwater for fulfilling the needs of the increasing population in Bengal Basin resulted in increased arsenic level in the groundwater. Mobilization of arsenic in Bengal delta is further interfered by microbial activities and interactions. Different microbial strains have been isolated from Bengal Delta which can tolerate, transform and resist arsenic. The use of arsenic contaminated groundwater for irrigation purpose in crop fields elevates arsenic concentration in surface soil and in the plants grown in these areas. Several plant species have been studied for their ability to accumulate arsenic in the Bengal Delta. Rice is generally grown in submerged flooded condition, where arsenic bioavailability is high in soil. As arsenic species are very much toxic to plants and can execute oxidative stresses, they can also affect the overall production of rice and other vegetables, and can affect the agricultural and economic development of Bengal Basin. Cattle population also consume arsenic infested water in those areas and usually eat edible plants contaminated with arsenic, which, in turn, can further increase the toxicity level in their bodies and also can increase the arsenic bioaccumulation in meat and milk. In the rural areas of the Bengal Delta, arsenic contamination raised a number of social problems which are continuously weakening the structural integrity of rural society. Uses of phytoremediation and microbial remediation technologies, rainwater harvesting, use of arsenic resistant plant varieties for cultivation are some sustainable methods which can be applied for arsenic remediation. Besides, nano-agglomerates of mixed oxides have been synthesized and successfully employed for arsenic removal from aqueous solutions. Intensive investigation on a complete food chain is urgently needed in the arsenic contaminated zones, which should be our priority in future researches.
    Źródło:
    World Scientific News; 2015, 10; 59-87
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Toxicological aspects of metal impurities in cosmetics
    Toksykologiczne aspekty zanieczyszczeń metalicznych w kosmetykach
    Autorzy:
    MONICZEWSKI, Andrzej
    STAREK, Magdalena
    RUTKOWSKA, Anita
    Powiązania:
    https://bibliotekanauki.pl/articles/1033717.pdf
    Data publikacji:
    2016
    Wydawca:
    Zakład Opieki Zdrowotnej Ośrodek Umea Shinoda-Kuracejo
    Tematy:
    "arsenic"
    "cadmium"
    "cosmetic products"
    "lead
    "toxicity of metals"
    mercury"
    Opis:
    Heavy metal compounds are included in many cosmetics and dietary supplements. The most frequent metal contaminants of cosmetic products are mercury, lead, cadmium and arsenic. The contents of toxic metals in cosmetic products are mainly associated with the use of inadequately cleaned raw materials. Despite numerous inspections of the manufacturing process andkeeping the production in line with the principles of Good Manufacturing Practice (GMP), these elements are still found even in products of the best quality. Metals contaminate cosmetics as a result of production processes. Heavy metal toxicity is the result of prolonged exposure which causes the appearance of many side effects. The mechanism of toxicity is mainly related to the impairment of ATP and the change of protein synthesis in enzyme activity, by inducing free radicals. Metals interfere with, among others, the proper functioning of organs, neurotoxic effects, cause problems in learning and behavior, adversely affect the proper functioning of the immune system and adversely affect the developping fetus. Metals have the ability to accumulate in certain organs, primarily in the kidneys and the liver. The European Union does not regulate the limits of metal concentrations in detail, but there is a list of substances prohibited for use in cosmetics in all Member States.
    Źródło:
    Medicina Internacia Revuo; 2016, 27, 107; 81-90
    0465-5435
    Pojawia się w:
    Medicina Internacia Revuo
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dosage and temporal dependent arsenic-induced mortality in Ceriodaphnia dubia: An effective biomarker for arsenic pollution
    Autorzy:
    Talapatra, S.N.
    Bhattacharya, S.
    Guha, G.
    Dutta, S.
    Chattopadhyay, D.
    Mukhopadhyay, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/11321.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    dosage
    arsenic
    mortality
    Ceriodaphnia dubia
    biomarker
    metal pollution
    water pollution
    toxicity
    water quality
    water contaminant
    Opis:
    Arsenic (As) is a metalloid that causes severe water pollution due to its extravagant toxicity. Ceriodaphnia dubia, a freshwater crustacean, was selected as a model system to evaluate the degree of time and dosage dependent acute toxicity caused by pentavalent As [As(V)]. C. dubia were collected from a natural pond and treated with different concentrations of As(V) for 24 hours and 48 hours. For both 24 hours and 48 hours treatment periods, the mortality rates were increased significantly ( P< 0.05) with increase in As(V) concentrations. Simultaneously, it was also observed that As(V) - induced mortality in C. dubia also depended on the time of exposure to the metalloid. We propose this model as a low-cost technique towards rapid screening of water quality in relation to As contamination.
    Źródło:
    International Letters of Natural Sciences; 2014, 02
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wystepowanie arsenu w srodowisku i w zywnosci
    The occurrence of arsenic in the environment and food
    Autorzy:
    Lozna, K
    Biernat, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/876597.pdf
    Data publikacji:
    2008
    Wydawca:
    Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
    Tematy:
    srodowisko przyrodnicze
    zywnosc
    arsen
    wystepowanie
    zanieczyszczenia powietrza
    zanieczyszczenia gleb
    monitoring zanieczyszczen
    toksycznosc
    zawartosc arsenu
    natural environment
    food
    arsenic
    occurrence
    air pollutant
    soil pollutant
    pollution monitoring
    toxicity
    arsenic content
    Opis:
    Głównymi źródłami zanieczyszczeń powietrza i gleby związkami arsenu jest przemysł wydobywczy węgla kamiennego i paliw płynnych oraz górnictwo i hutnictwo metali nieżelaznych. Na obszarach gdzie przemysł ten jest dobrze rozwinięty obserwuje się przypadki zatruć przewlekłych wśród mieszkańców. Stałe monitorowanie stopnia zanieczyszczenia produktów spożywczych związkami arsenu jest więc koniecznie zwłaszcza w tych rejonach.
    The main source of air and soil contamination with arsenic compounds is mining industry of coal and oil as well as mining and metallurgy of non-ferrous metals. The cases of long-drawn arsenism were observed among inhabitants of regions where such industry is well developed. The long term, regular exposure to arsenic compounds both food and inhalation manifests in skin lesion and troubles in functioning of blood, neural and breathing systems. The purpose of this study is the latest literature review concerning contamination of air, soil and potable water with arsenic. The content of arsenic in the comestible produce varies and depends on kind ant origin of the produce. The biggest amount of arsenic in the daily ration came from potable water. The determined amount of arsenic ranged within 1 - 5300 µg/L comes from countries where earth water is used as drinking water, which means that allowable contents specified by FAO/WHO experts is exceeded more than one hundred times. The common inhabitant of developing countries consumes 400 - 650 g of rice weekly. The average contamination of rice with arsenic is 0.57 - 0.69 mg/kg, which means the intake of this element on the level 30% - 45% PTWI (Provisional Tolerable Weekly Intake). The relatively small arsenic contents is characteristic for vegetables and fruits (<0,1 mg/kg), higher amount is observed in leaf vegetables (up to 0.6 mg/kg) and potatoes (0.86 mg/kg). The similarly low arsenic contents (<0.1 mg/kg) is characteristic for the meat produce. Among animal produce the largest quantity of arsenic is determined in fish and seafood (1.5 - 11.2 mg/kg). The introduction of EU regulations in Poland resulted in resignation of the arsenic contents limitation in food, however the continues monitoring of the contamination level with compounds is necessary, particularly in the industrial areas of the country.
    Źródło:
    Roczniki Państwowego Zakładu Higieny; 2008, 59, 1; 19-31
    0035-7715
    Pojawia się w:
    Roczniki Państwowego Zakładu Higieny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    NADPH oxidase C is not the main source of ROS under arsenic toxicity but regulates antioxidants and metal transporters
    Autorzy:
    Gupta, D.
    Inouhe, M.
    Rodriguez-Serrano, M.
    Romero-Puertas, M.
    Sandalio, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/81189.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    NADPH oxidase
    arsenic
    toxicity
    oxidative metabolism
    Arabidopsis thaliana
    malondialdehyde
    glutathione reductase activity
    oxidative stress
    reactive oxygen species
    antioxidant
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Poziom zanieczyszczenia metalami niektorych grzybow jadalnych dziko rosnacych
    Autorzy:
    Statkiewicz, U
    Gayny, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/871316.pdf
    Data publikacji:
    1994
    Wydawca:
    Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
    Tematy:
    zagrozenia zdrowia
    skazenia srodowiska
    zywnosc
    kadm
    grzyby jadalne
    olow
    rtec
    runo lesne
    metale ciezkie
    arsen
    cynk
    toksykologia zywnosci
    miedz
    toksycznosc
    health hazard
    environment contaminant
    food
    cadmium
    edible mushroom
    lead
    mercury
    forest cover
    heavy metal
    arsenic
    zinc
    food toxicology
    copper
    toxicity
    Opis:
    Oznaczono Cd, Hg, Pb, Cu i Zn w próbkach grzybów jadalnych dziko rosnących pozyskanych w latach 1990-91 z sześciu rejonów Polski.
    The amount of lead, cadmium, copper, zinc and mercury has been determined by atomic absorption spectroscopy in 96 samples of edible mushrooms, growing wild fresh edible fungus and dried (Boletus scaber, ceps) mushrooms, acquired from 6 regions in Poland: zielonogórskie, toruńskie, ostrołęckie, radomskie, warszawskie and lubelskie in 1990 and 1991. The level was found to be higher than that allowed by the polish standard PN-89/A-78510 Mushroom Processed Foods. Dried mushrooms and other legal acts eg. Instruction of the Ministry of Health § Social Welfare of 12th November 1990, the content of zinc in dried mushrooms (all samples) and in fresh edible fungus from the zielonogórski and toruński region. The content of copper in fresh edible fungus did not usually correspond with the requirements, whereas in the dried mushrooms (Boletus scaber, ceps) it exceeded the level only insignificantly in individual samples (average from studied regions was found to be within limits). The content of lead in dried mushrooms complied with the requirements of the standard, except for samples of ceps from zielonogórski region, where it insignificantly exceeded the allowed level of 2.0 mg/kg. The average content of zinc and copper in dried mushrooms did not exceed the allowed levels. The levels of mercury determined in the studied samples do not cause any excitement in light of the FAO/WHO agreements. A high level of contamination with cadmium was noted in all studied samples, being 2.5 times higher in edible fungus, 6-8 times higher in Boletus scaber and 19-23 times higher in dried ceps. This fact requires attention of sanitary services, although it should be stated that mushrooms are not the basic nutritional group, and thus their participation in the overall intake of metals in consummated foods is insignificant.
    Źródło:
    Roczniki Państwowego Zakładu Higieny; 1994, 45, 1-2; 27-35
    0035-7715
    Pojawia się w:
    Roczniki Państwowego Zakładu Higieny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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