Results 41 to 50 of about 575 (180)

Prophylactic Zinc and Therapeutic Selenium Administration Increases the Antioxidant Enzyme Activity in the Rat Temporoparietal Cortex and Improves Memory after a Transient Hypoxia‐Ischemia

open access: yesOxidative Medicine and Cellular Longevity, Volume 2018, Issue 1, 2018., 2018
In the cerebral hypoxia‐ischemia rat model, the prophylactic administration of zinc can cause either cytotoxicity or preconditioning effect, whereas the therapeutic administration of selenium decreases the ischemic damage. Herein, we aimed to explore whether supplementation of low doses of prophylactic zinc and therapeutic selenium could protect from a
Constantino Tomas-Sanchez   +14 more
wiley   +1 more source

Tectonic stress field and fractal distribution of volcanoes in the Michoacan-Guanajuato region of the Mexican Volcanic Belt

open access: yesGeofísica Internacional, 1995
El campo de esfuerzos tectónicos del Campo Volcánico de Michoacán-Guanajuato es estimado a partir de la orientación de fallas normales y del alineamiento de los volcanes: σ1 (el esfuerzo principal compresional máximo) es vertical en toda la región y σ2 ...
Ken Kurokawa   +2 more
doaj   +1 more source

The 2021 La Palma eruption: social dilemmas resulting from life close to an active volcano

open access: yesGeology Today, Volume 40, Issue 3, Page 96-111, May/June 2024.
Damage and destruction caused by the 2021 eruption of the Tajogaite volcano on La Palma was unprecedented relative to other historical eruptions of the last century (1909, 1949, 1971, 2011) in the Canary Islands. The devastation caused by the eruption was not a result of eruption magnitude, which was only marginally larger than other historical events,
Valentin R. Troll   +14 more
wiley   +1 more source

Comparison between Peritoneal Macrophage Activation by Bougainvillea xbuttiana Extract and LPS and/or Interleukins

open access: yesBioMed Research International, Volume 2017, Issue 1, 2017., 2017
Activation of macrophages may be one of the possible approaches in modulating inflammation. We previously reported that Bougainvillea xbuttiana extract showed an immunomodulatory activity. Here we compare the activation of macrophages exposed to B. xbuttiana extract and compare it with the other treatments such as LPS, IL‐4, and IL‐10.
Lluvia Arteaga Figueroa   +4 more
wiley   +1 more source

The southern Guadalajara volcanic chain, Jalisco, México

open access: yesGeofísica Internacional, 1985
La cadena volcánica del sur de Guadalajara consiste en ocho pequeños conos de lava y ceniza, de la edad PlioPleistocénica. Dichos conos presentan una tendencia NW-SE y atraviesan la parte sur de la ciudad de Guadalajara.
J. F. Luhr, P. Lazaar
doaj   +1 more source

Opposing genetic patterns of range shifting temperate and tropical gastropods in an area undergoing tropicalisation

open access: yesJournal of Biogeography, Volume 51, Issue 2, Page 246-262, February 2024.
Abstract Aim The poleward range expansion of tropical species, and range contraction of temperate species (known as tropicalisation) has mainly been studied from an ecological perspective, with little research on its genetic consequences. Here, we used distributional and genetic data to document the consequences of tropicalisation in rocky shore ...
Karolina M. Zarzyczny   +10 more
wiley   +1 more source

Treatment with α‐Lipoic Acid over 16 Weeks in Type 2 Diabetic Patients with Symptomatic Polyneuropathy Who Responded to Initial 4‐Week High‐Dose Loading

open access: yesJournal of Diabetes Research, Volume 2015, Issue 1, 2015., 2015
Effective treatment of diabetic sensorimotor polyneuropathy remains a challenge. To assess the efficacy and safety of α‐lipoic acid (ALA) over 20 weeks, we conducted a multicenter randomized withdrawal open‐label study, in which 45 patients with type 2 diabetes and symptomatic polyneuropathy were initially treated with ALA (600 mg tid) for 4 weeks ...
Hector Garcia-Alcala   +8 more
wiley   +1 more source

Silver Nanoparticles Based on Annona muricata Peel Reduce Cell Viability in Medulloblastoma and Neuroblastoma Cell Lines

open access: yesJournal of Nanotechnology, Volume 2024, Issue 1, 2024.
Silver nanoparticles (AgNPs) can be obtained from plants and other organisms through green synthesis methods, considered eco‐friendly and highly biocompatible. In this way, using plants with antitumor bioactive compounds increases cytotoxicity against tumor cells, acting in synergy between plant bioactive compounds (covering the nanoparticle) and AgNPs
Eduardo Lira-Díaz   +6 more
wiley   +1 more source

Ciencia y montañismo en los Andes. El Cotopaxi de Edward Whymper y Hans Meyer

open access: yesAnuario Colombiano de Historia Social y de la Cultura
Objetivo: comprender la relación de los tópicos de la hazaña física y la impronta estética como parte integral de las representaciones de las exploraciones científicas, específicamente a través de dos expediciones europeas a los altos Andes del Ecuador:
Patricio Aguirre Negrete
doaj   +1 more source

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