Results 31 to 40 of about 3,283 (202)

Retinal cone photoreceptors of the deer mouse Peromyscus maniculatus : development, topography, opsin expression and spectral tuning [PDF]

open access: yes, 2013
A quantitative analysis of photoreceptor properties was performed in the retina of the nocturnal deer mouse, Peromyscus maniculatus, using pigmented (wildtype) and albino animals.
Arbogast, Patrick   +2 more
core   +2 more sources

Prolactin is a strong candidate for the regulation of luteal steroidogenesis in vizcachas (Lagostomus maximus) [PDF]

open access: yes, 2018
Prolactin (PRL) is essential for the maintenance of the corpora lutea and the production of progesterone (P4) during gestation of mice and rats, which makes it a key factor for their successful reproduction.
Charif, Santiago Elías   +10 more
core   +1 more source

Small mammals as indicators of cryptic plant species diversity in the central Chilean plant endemicity hotspot

open access: yesGlobal Ecology and Conservation, 2014
Indicator species could help to compensate for a shortfall of knowledge about the diversity and distributions of undersampled and cryptic species. This paper provides background knowledge about the ecological interactions that affect and are affected by ...
Meredith Root-Bernstein   +3 more
doaj   +1 more source

Microbiome alterations are associated with apolipoprotein E mutation in Octodon degus and humans with Alzheimer's disease. [PDF]

open access: yesiScience
Summary: Gut microbiome dysbiosis is linked to many neurological disorders including Alzheimer’s disease (AD). A major risk factor for AD is polymorphism in the apolipoprotein E (APOE) gene, which affects gut microbiome composition.
Zampieri G   +9 more
europepmc   +2 more sources

Ectoparasites of the endemic rodent Abrocoma bennetti (Hystricomorpha: Abrocomidae) from semiarid Chile

open access: yesGayana, 2018
A total of 13 individuals of the Abrocoma bennetti rodent were captured and 354 ectoparasites belonging to 10 different species were collected and analyzed. The most abundant species was a Phithraptera, Monogyropus longus (62%), followed by Siphonaptera
Andrea Paz Yáñez-Meza   +2 more
doaj   +1 more source

A Multivariate Assessment of Age-Related Cognitive Impairment in Octodon degus

open access: yesFrontiers in Integrative Neuroscience, 2021
Aging is a progressive functional decline characterized by a gradual deterioration in physiological function and behavior. The most important age-related change in cognitive function is decline in cognitive performance (i.e., the processing or ...
Daniela S. Rivera   +5 more
doaj   +1 more source

Reflections on the Utility of the Retina as a Biomarker for Alzheimer's Disease: A Literature Review. [PDF]

open access: yes, 2019
As a part of the central nervous system, the retina may reflect both physiologic processes and abnormalities related to diseases of the brain. Indeed, a concerted effort has been put forth to understand how Alzheimer's disease (AD) pathology may manifest
Honma, Patrick   +2 more
core   +1 more source

Tool use specific adult neurogenesis and synaptogenesis in rodent (Octodon degus) hippocampus. [PDF]

open access: yesPLoS ONE, 2013
We previously demonstrated that degus (Octodon degus), which are a species of small caviomorph rodents, could be trained to use a T-shaped rake as a hand tool to expand accessible spaces.
Noriko Kumazawa-Manita   +3 more
doaj   +1 more source

Exploring efficient and effective mammalian models for Alzheimer's disease. [PDF]

open access: yesFront Aging Neurosci
The aim of this study was to explore and discuss efficient and effective mammalian models for Alzheimer’s disease (AD). In this study, efficient AD models are characterized by a small body size, a short lifespan, and rapid development of the main ...
Kayano M.
europepmc   +2 more sources

Las ocupaciones humanas del sitio arqueológico de Santa Inés, Laguna de Tagua Tagua, Chile central [PDF]

open access: yes, 2012
The study of archaeological and bioanthropological evidence from the SantaInés site (central Chile), together with new radiocarbon dates available, haveallowed us to define this site as a residential settlement with several occupationalevents associated ...
Aspillaga, Eugenio   +5 more
core   +2 more sources

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