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Oxidative stress indicators in human and bottlenose dolphin leukocytes in response to a pro-inflammatory challenge

BIOCELL 2021年第6期45卷 1621-1630页

作者： TARYn E.SYMOn RAMÓn GAXIOLA-ROBLES CLAUDIA J.HERnÁnDEZ-CAMACHO tania zenteno-savín Centro de Investigaciones Biológicas del noroeste La Paz23096México Hospital General de Zona no.1 Instituto Mexicano del Seguro SocialLa Paz23000México Centro Interdisciplinario de Ciencias Marinas Instituto Politécnico NacionalLa Paz23096México

Marine mammals undergo cycles of tissue ischemia and reperfusion during the dive *** injury can result in oxidative tissue damage and the activation of a pro-inflammatory immune *** risk of oxidative damage is reduced by *** hypothesis is that the reported higher antioxidant defenses within marine mammal tissues provide additional protection in situations that produce oxidative stress,like inflammation,in comparison to terrestrial mammal *** were isolated from the whole blood of Pacific bottlenose dolphins(Tursiops truncatus gilli)and humans(Homo sapiens)and were exposed to lipopolysaccharides(LPS,10μg/mL)in vitro to simulate a pro-inflammatory *** stress indicators,including superoxide radical(O_(2)^(•−))production,activities of superoxide dismutase(SOD),catalase(CAT),glutathione peroxidase(GPx),glutathione reductase(GR),and glutathione S-transferase(GST),as well as oxidative protein damage,were quantified by *** 48 h under experimental conditions,bottlenose dolphin leukocytes produced 1.9 times more O_(2)^(•−)but displayed 2.0 times lower protein carbonyl concentrations compared to human *** 48 h under experimental conditions,bottlenose dolphin leukocytes displayed 7.9,2.0,11.1,and 3.3 times more activities of CAT,GPx,GR,and GST,respectively,compared to human *** results suggest that,under cell culture conditions,the antioxidant defenses in bottlenose dolphin leukocytes provide additional protection against pro-inflammatory challenges in comparison to human leukocytes,likely as an adaptive advantage.

关键词： Antioxidant defenses Marine mammals Oxidative stress Reactive oxygen species White blood cells

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Differences in arsenic, molybdenum, barium, and other physicochemical relationships in groundwater between sites with and without mining activities

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natural Science 2013年第2期5卷 238-243页

作者： Lia Méndez-Rodríguez tania zenteno-savín Baudilio Acosta-Vargas Jobst Wurl Miguel Imaz-Lamadrid Department of Marine Geology Autonomous University of Baja California Sur La Paz México Environmental Planning and Conservation Centro de Investigaciones Biológicas del Noroeste S.C. La Paz México

The characteristic relationships of trace metals and other water quality parameters in a specific region can be affected by anthropogenic activeties. Since the mid-18th century in the southwestern part of the Baja California Peninsula, intermittent gold mining activities have been developed. We analyzed 36 water quality parameters in accordance with the procedures suggested by international agencies to evaluate the impact of this activity and the time of year on the mobilization of trace element levels and their relationships in groundwater. Quantifiable levels of molybdenum help to establish the area influenced by ore deposits because it is one of the three elements in the paragenesis associated to gold. Arsenic in sites closer to ore burning areas was associated with cobalt, indicating the potential presence of a by-product generated from arsenolite;whereas in the non-mineralized area, it was associated with barium, forming a compound that tends to precipitate, thereby maintaining a natural geochemical control in this region. From the sites sampled, 45% exceeded the limit for arsenic (10 μg/l) established by international agencies. During area monitoring with annual precipitation of 207 mm, only seven of 36 parameters analyzed showed significant differences in relation to time of year.

关键词： Arsenic Barium Molybdenum Water Quality Ore Deposits

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