نتایج جستجو برای: kin

تعداد نتایج: 5420  

2018
Xu Luo Shengjie Gu Yujiao Zhang Jianhong Zhang

The pathological superoxidative condition that retinal pigment epithelium (RPE) cells experience contributed to the advancement of age-related macular degeneration (AMD), which was accompanied by significant neovascularization. Therefore, the discovery of novel pharmacological candidates to ameliorate oxidative damage (H2O2) against RPE cells and inhibit the following angiogenesis simultaneousl...

Journal: :Acta neurologica Scandinavica 2010
A G Olsson I Markhede S Strang L I Persson

OBJECTIVES The well-being and physical function among patients with ALS and their next of kin was studied over time. MATERIALS AND METHODS Thirty-five patients with ALS and their next of kin were studied with respect to physical, general and psychological well-being by the visual analogue scale (VAS) every 4-6 months. Physical function in patients was rated by the ALSFRS-R and the Norris scal...

2008
Michael D. Beecher

Synopsis. This paper examines mechanisms of individual identification in the kin rec? ognition process. In type 1 kin recognition, the individual {e.g., a parent) learns the identifying cues (the "signature") of particular kin {e.g., offspring) at some stage when there are reliable contextual cues as to kinship {e.g., the parent finds the young in its nest). These kin are subsequently recognize...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Olaya Rendueles Peter C Zee Iris Dinkelacker Michaela Amherd Sébastien Wielgoss Gregory J Velicer

Diverse forms of kin discrimination, broadly defined as alteration of social behavior as a function of genetic relatedness among interactants, are common among social organisms from microbes to humans. However, the evolutionary origins and causes of kin-discriminatory behavior remain largely obscure. One form of kin discrimination observed in microbes is the failure of genetically distinct colo...

Journal: :Current Biology 2006
Timothy J.A. Hain Bryan D. Neff

Kin selection theory has been one of the most significant advances in our understanding of social behavior . However, the discovery of widespread promiscuity has challenged the evolutionary importance of kin selection because it reduces the benefit associated with helping nestmates . This challenge would be resolved if promiscuous species evolved a self-referent kin-recognition mechanism that e...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2007
J Cote J Clobert P S Fitze

Colonization is the crucial process underlying range expansions, biological invasions, and metapopulation dynamics. Which individuals leave their natal population to colonize empty habitats is a crucial question and is presently unresolved. Dispersal is the first step in colonization. However, not all dispersing individuals are necessarily good colonizers. Indeed, in some species, the phenotype...

Journal: :The Journal of biological chemistry 1990
S A Orellana G S McKnight

The S49 mouse lymphoma mutant cell line Kin- is resistant to the cytotoxic effects of elevated cAMP levels, has no detectable cAMP-dependent protein kinase activity, and has depressed levels of cAMP-binding regulatory subunits. We demonstrate that although the Kin- cell line lacks detectable catalytic subunit protein, these cells express wild-type levels of mRNA for both C alpha and C beta cata...

2016
Daniela Biechl Kristin Tietje Gabriele Gerlach Mario F. Wullimann

Zebrafish larvae imprint on visual and olfactory kin cues at day 5 and 6 postfertilization, respectively, resulting in kin recognition later in life. Exposure to non-kin cues prevents imprinting and kin recognition. Imprinting depends on MHC class II related signals and only larvae sharing MHC class II alleles can imprint on each other. Here, we analyzed which type of olfactory sensory neuron (...

Journal: :The Future of children 2004
Rob Geen

Kin caregivers can provide continuity and connectedness for children who cannot remain with their parents. This is one reason kinship care has become the preferred placement option for foster children. However, despite the growing reliance on kin caregivers, kinship care policies have evolved with little coherent guidance. This article examines kinship care and finds: Kinship foster parents ten...

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