Results 251 to 260 of about 26,120,112 (307)

Growth Factors and Cell Aging

1991
Although the fundamental mechanisms of in vitro cell aging are still undetermined, certain prominent features have emerged that serve to delineate or focus the search for these mechanisms. In Table 3.1 we present a selected list of changes that accompany senescence in culture.
P D, Phillips, D L, Doggett, V J, Cristofalo   +2 more
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Age as a factor in the handedness of adults

Neuropsychologia, 1977
Abstract The distribution of handedness, as shown by questionnaire, was considered in relation to age in 800 adult psychiatric patients and 800 controls. In both groups, increasing age was associated with a significant shift toward dextrality. The percentage of left-handed writers was lowest in the highest age groups.
J J, Fleminger, R, Dalton, K J, Standage
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Study of the Ag(z) Factor

Nature, 1967
THE existence of a genetically determined β-lipoprotein polymorphism in human serum was detected by Allison and Blumberg1 and Blumberg et al.2, employing a precipitating antibody which was present in the serum of a repeatedly transfused patient (C. de B.) The same antiserum was investigated by Hirschfeld et al.3 and was shown to contain at least three ...
A, Vierucci, B S, Blumberg, G, Morganti
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Factors affecting the age at menopause

Journal of Biosocial Science, 1979
SummaryA postal questionnaire was sent out in September 1977 to all women aged between 40 and 60 years in Ede, the Netherlands. The design of the study was similar to that used by Jaszmann et al. in 1967 in the same locality. The response rate was 66·6%.
P A, van Keep, P C, Brand, P, Lehert
openaire   +2 more sources

Age-related macular degeneration

The Lancet, 2018
Age-related macular degeneration is a leading cause of visual impairment and severe vision loss. Clinically, it is classified as early-stage (medium-sized drusen and retinal pigmentary changes) to late-stage (neovascular and atrophic).
P. Mitchell, G. Liew, B. Gopinath, T. Wong   +3 more
semanticscholar   +1 more source

The Age Factor in the Treatment of Glioblastoma

JAMA Neurology, 2016
of diagnosed cancers in the United States will occur in patients older than 65 years. 2 It is logical to assume that this trend will also occur in the primary brain tumor, glioblastoma (GBM). This presents a problem for neuro-oncologists because older patients have been historically underrepresented in neuro-oncology trials.
openaire   +2 more sources

von Willebrand Factor and Aging

Seminars in Thrombosis and Hemostasis, 2014
von Willebrand factor (VWF) plays critical roles in initiating primary hemostasis and extending the half-life of coagulation factor VIII in circulation. VWF levels increase with age and elevated levels are associated with an increased risk of venous thromboembolism and cardiovascular disease (CVD).
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Polyphenol Oxidase as a Factor in Aging

Gerontology, 2009
Polyphenol oxidase oxidizes several proteins that contain tyrosine. During aging, when synthesis and replacement of catabolized proteins are lagging, the relative proportion of oxidized species might reach high values, thus impairing physiological function. A mathematical analysis verifies this assumption.
openaire   +2 more sources

A New Factor of the Ag-System: Ag(g)

Vox Sanguinis, 1970
R, Bütler, E, Brunner, G, Morganti, A, Vierucci, N, Scaloumbacas, E, Politis   +5 more
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Ag(d), a Further Factor of the Ag‐System

Vox Sanguinis, 1970
R, Bütler, E, Brunner, N, Scaloumbacas, E, Politis, G, Morganti, A, Vierucci   +5 more
openaire   +2 more sources