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Gerontology

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https://www.readbyqxmd.com/read/27875813/memories-of-a-professor-emeritus
#1
Georg Wick
No abstract text is available yet for this article.
November 23, 2016: Gerontology
https://www.readbyqxmd.com/read/27855417/testosterone-deficiency-and-testosterone-treatment-in-older-men
#2
Farid Saad, Gabriele Röhrig, Stephan von Haehling, Abdulmaged Traish
Frailty is a clinical condition related to changes in metabolism, to sarcopenia, and to decline in muscle mass and strength, bone mineral density, and physical function with aging. The pathophysiology of frailty is multifactorial and associated with comorbidities. Testosterone is implicated in regulating metabolic functions, maintenance of muscle and bone, and inhibition of adipogenesis. In older individuals, reduced testosterone is thought to contribute to an altered state of metabolism, loss of muscle and bone, and increased fat, leading to sarcopenia, sarcopenic obesity, and frailty...
November 18, 2016: Gerontology
https://www.readbyqxmd.com/read/27855415/instrumented-trail-making-task-to-differentiate-persons-with-no-cognitive-impairment-amnestic-mild-cognitive-impairment-and-alzheimer-disease-a-proof-of-concept-study
#3
He Zhou, Marwan Sabbagh, Rachel Wyman, Carolyn Liebsack, Mark E Kunik, Bijan Najafi
BACKGROUND: Objective and time-effective tools are needed to identify motor-cognitive impairment and facilitate early intervention. OBJECTIVE: We examined the feasibility, accuracy, and reliability of an instrumented trail-making task (iTMT) using a wearable sensor to identify motor-cognitive impairment among older adults. METHODS: Thirty subjects (age = 82.2 + 6.1 years, body mass index = 25.7 + 4.8, female = 43.3%) in 3 age-matched groups, 11 healthy, 10 with amnestic mild cognitive impairment (aMCI), and 9 with Alzheimer disease (AD), were recruited...
November 18, 2016: Gerontology
https://www.readbyqxmd.com/read/27825158/regeneration-of-the-aging-lung-a-mini-review
#4
Sonia Navarro, Barbara Driscoll
Natural lung aging is marked by molecular changes that occur during development, maturation, and late-life decline. At the cellular and whole organ level, degenerative changes that are a hallmark of natural aging (shorter telomeres, increased expression of cellular senescence markers, increased DNA damage, oxidative stress, and apoptosis, accompanied by diminished elasticity) reach pathological levels in aging humans in the form of chronic respiratory disease. Aging strongly correlates with the development and incidence of chronic respiratory diseases, including cancer and idiopathic pulmonary fibrosis, but is most strongly linked with development of chronic obstructive pulmonary disease...
November 9, 2016: Gerontology
https://www.readbyqxmd.com/read/27820924/aging-of-cloned-animals-a-mini-review
#5
Jörg Patrick Burgstaller, Gottfried Brem
The number of species for which somatic cell nuclear transfer (SCNT) protocols are established is still increasing. Due to the high number of cloned farm, companion, and sport animals, the topic of animal cloning never ceases to be of public interest. Numerous studies cover the health status of SCNT-derived animals, but very few cover the effects of SCNT on aging. However, only cloned animals that reach the full extent of the species-specific lifespan, doing so with only the normal age-related afflictions and diseases, would prove that SCNT can produce completely healthy offspring...
November 8, 2016: Gerontology
https://www.readbyqxmd.com/read/27784018/the-potential-of-sgc-modulators-for-the-treatment-of-age-related-fibrosis-a-mini-review
#6
Peter Sandner, Peter Berger, Christoph Zenzmaier
Fibrotic diseases cause high rates of morbidity and mortality, and their incidence increases with age. Despite intense research and development efforts, effective and well-tolerated antifibrotic treatments are scarce. Transforming growth factor-β signaling, which is widely considered the most important profibrotic factor, causes a pro-oxidant shift in redox homeostasis and a concomitant decrease in nitric oxide (NO) signaling. The NO/cyclic guanosine monophosphate (cGMP) signaling cascade plays a pivotal role in the regulation of cell and organ function in whole-body hemostasis...
October 27, 2016: Gerontology
https://www.readbyqxmd.com/read/27771728/chronobiology-of-aging-a-mini-review
#7
Germaine Cornelissen, Kuniaki Otsuka
Aging is generally associated with weakening of the circadian system. The circadian amplitude is reduced and the circadian acrophase becomes more labile, tending to occur earlier with advancing age. As originally noted by Franz Halberg, similar features are observed in the experimental laboratory after bilateral lesioning of the suprachiasmatic nuclei, suggesting the involvement of clock genes in the aging process as they are in various disease conditions. Recent work has been shedding light on underlying pathways involved in the aging process, with the promise of interventions to extend healthy life spans...
October 22, 2016: Gerontology
https://www.readbyqxmd.com/read/27771698/elder-abuse-in-nursing-homes-do-special-care-units-make-a-difference-a-secondary-data-analysis-of-the-swiss-nursing-homes-human-resources-project
#8
Olivia Blumenfeld Arens, Katharina Fierz, Franziska Zúñiga
BACKGROUND: In special care units (SCUs) for residents with advanced dementia, both personnel and organizations are adapted to the needs of residents. However, whether these adaptations have a preventive effect on elder abuse has not yet been explored. OBJECTIVE: To describe the prevalence of observed emotional abuse, neglect, and physical abuse in Swiss nursing homes, to compare SCUs with non-SCUs concerning the frequency of observed emotional abuse, neglect, and physical abuse, and to explore how resident-related characteristics, staff outcomes/characteristics, and organizational/environmental factors relate to observed elder abuse...
October 22, 2016: Gerontology
https://www.readbyqxmd.com/read/27764828/driving-characteristics-of-older-drivers-and-their-relationship-to-the-useful-field-of-view-test
#9
Tania Dukic Willstrand, Thomas Broberg, Helena Selander
BACKGROUND: To maintain the mobility of older people in later life, it is essential to sustain their autonomy; however, driving is a complex task, requiring a large range of visual, psychomotor and cognitive abilities. Subsequently, a key issue is to measure and evaluate the fitness to drive of older drivers. Several methods have been proposed, among them the useful field of view (UFOV) test. OBJECTIVE: The present study aimed to identify driving characteristics in older drivers and the relationship between the UFOV test and the on-road driving results...
October 21, 2016: Gerontology
https://www.readbyqxmd.com/read/27760428/response-of-the-nitric-oxide-system-to-hypobaric-hypoxia-in-the-aged-striatum
#10
Francisco Molina, María Luisa Del Moral, María Ángeles Peinado, Alma Rus
BACKGROUND: Nitric oxide (NO) appears to play a key role in the hypoxic injury to the brain. We have previously reported that hypoxia/reoxygenation downregulated NO synthases (NOS) in the adult striatum. Until now, no data were available concerning the influence of aging in conjunction with hypoxia/reoxygenation on the NO system in the striatum. OBJECTIVE: The aim of this study was to assess the role of the NO pathway in the hypoxic aged striatum. METHODS: Wistar rats 24-25 months old were submitted to hypobaric hypoxia (20 min)/reoxygenation (0 h, 24 h, 5 days)...
October 20, 2016: Gerontology
https://www.readbyqxmd.com/read/27760422/how-we-experience-being-alone-age-differences-in-affective-and-biological-correlates-of-momentary-solitude
#11
Theresa Pauly, Jennifer C Lay, Urs M Nater, Stacey B Scott, Christiane A Hoppmann
BACKGROUND: Spending time alone constitutes a ubiquitous part of our everyday lives. As we get older, alone time increases. Less is known, however, about age differences in the experience of spending time alone (momentary solitude). OBJECTIVES: We examined time-varying associations between momentary solitude, affect quality, and two hypothalamic-pituitary-adrenal axis activity markers [salivary cortisol; dehydroepiandrosterone sulfate (DHEAs)] to better understand the affective and biological correlates of momentary solitude across the adult life span...
October 20, 2016: Gerontology
https://www.readbyqxmd.com/read/27760421/skeletal-muscle-regeneration-repair-and-remodelling-in-aging-the-importance-of-muscle-stem-cells-and-vascularization
#12
Sophie Joanisse, Joshua P Nederveen, Tim Snijders, Bryon R McKay, Gianni Parise
Sarcopenia is the age-related loss of skeletal muscle mass and strength. Ultimately, sarcopenia results in the loss of independence, which imposes a large financial burden on healthcare systems worldwide. A critical facet of sarcopenia is the diminished ability for aged muscle to regenerate, repair and remodel. Over the years, research has focused on elucidating underlying mechanisms of sarcopenia and the impaired ability of muscle to respond to stimuli with aging. Muscle-specific stem cells, termed satellite cells (SC), play an important role in maintaining muscle health throughout the lifespan...
October 20, 2016: Gerontology
https://www.readbyqxmd.com/read/27760416/stem-cell-models-a-guide-to-understand-and-mitigate-aging
#13
Regina Brunauer, Silvestre Alavez, Brian K Kennedy
Aging is studied either on a systemic level using life span and health span of animal models, or on the cellular level using replicative life span of yeast or mammalian cells. While useful in identifying general and conserved pathways of aging, both approaches provide only limited information about cell-type specific causes and mechanisms of aging. Stem cells are the regenerative units of multicellular life, and stem cell aging might be a major cause for organismal aging. Using the examples of hematopoietic stem cell aging and human pluripotent stem cell models, we propose that stem cell models of aging are valuable for studying tissue-specific causes and mechanisms of aging and can provide unique insights into the mammalian aging process that may be inaccessible in simple model organisms...
October 20, 2016: Gerontology
https://www.readbyqxmd.com/read/27756060/standing-up-slowly-antagonises-initial-blood-pressure-decrease-in-older-adults-with-orthostatic-hypotension
#14
Eline S de Bruïne, Esmee M Reijnierse, Marijke C Trappenburg, Jantsje H Pasma, Oscar J de Vries, Carel G M Meskers, Andrea B Maier
BACKGROUND: Orthostatic hypotension (OH) is common in older adults and associated with increased morbidity and mortality, loss of independence and high health-care costs. Standing up slowly is a recommended non-pharmacological intervention. However, the effectiveness of this advice has not been well studied. OBJECTIVES: The aim of this study was to investigate whether standing up slowly antagonises posture-related blood pressure (BP) decrease in a clinically relevant population of geriatric outpatients...
October 19, 2016: Gerontology
https://www.readbyqxmd.com/read/27756059/there-s-more-than-meets-the-eye-complex-associations-of-daily-pain-physical-symptoms-and-self-efficacy-with-activity-in-middle-and-older-adulthood
#15
Rachel G Curtis, Tim D Windsor, Jacqueline A Mogle, Allison A M Bielak
BACKGROUND: Participation in activities is associated with a range of positive outcomes in adulthood. Research has shown that pain and physical symptoms are associated with less activity in older adults, whereas higher self-efficacy is associated with more activity. Such research tends to examine cross-sectional or long-term between-person change, limiting the opportunity to explore dynamic within-person processes that unfold over shorter time periods. OBJECTIVES: This study aimed to (1) replicate previous between-person associations of self-efficacy with engagement in activity and (2) examine whether daily variation in pain, physical symptoms, and self-efficacy corresponded with daily within-person variation in different types of activity...
October 19, 2016: Gerontology
https://www.readbyqxmd.com/read/27736812/mission-statement
#16
Georg Wick
No abstract text is available yet for this article.
October 14, 2016: Gerontology
https://www.readbyqxmd.com/read/27595269/age-related-alterations-in-signaling-pathways-in-articular-chondrocytes-implications-for-the-pathogenesis-and-progression-of-osteoarthritis-a-mini-review
#17
Peter van der Kraan, Csaba Matta, Ali Mobasheri
Musculoskeletal conditions are a major burden on individuals, healthcare systems, and social care systems throughout the world, with indirect costs having a predominant economic impact. Aging is a major contributing factor to the development and progression of arthritic and musculoskeletal diseases. Indeed, aging and inflammation (often referred to as 'inflammaging') are critical risk factors for the development of osteoarthritis (OA), which is one of the most common forms of joint disease. The term 'chondrosenescence' has recently been introduced to define the age-dependent deterioration of chondrocyte function and how it undermines cartilage function in OA...
September 6, 2016: Gerontology
https://www.readbyqxmd.com/read/27592333/effects-of-indoor-footwear-on-balance-and-gait-patterns-in-community-dwelling-older-women
#18
Hylton B Menz, Maria Auhl, Shannon E Munteanu
BACKGROUND: Footwear worn indoors is generally less supportive than outdoor footwear and may increase the risk of falls. OBJECTIVE: To evaluate balance ability and gait patterns in older women while wearing different styles of indoor footwear: a backless slipper and an enclosed slipper designed to optimise balance. METHODS: Older women (n = 30) aged 65-83 years (mean 74.4, SD 5.6) performed a series of laboratory tests of balance ability (postural sway, limits of stability, and tandem walking, measured with the NeuroCom® Balance Master) and gait patterns (walking speed, cadence, and step length, measured with the GAITRite® walkway) while wearing (1) socks, (2) backless slippers with a soft sole, and (3) enclosed slippers with a firm sole and Velcro® fastening...
September 3, 2016: Gerontology
https://www.readbyqxmd.com/read/27578193/time-trends-in-murray-s-psychogenic-needs-over-three-decades-in-swedish-75-year-olds
#19
Eva Billstedt, Margda Waern, Hanna Falk, Paul Duberstein, Svante Östling, Tore Hällström, Ingmar Skoog
BACKGROUND: While time trends in personality traits have been suggested in younger cohorts, little is known regarding this issue in older adults. OBJECTIVE: To test for birth cohort changes in psychogenic needs according to Murray's theory of personality in two birth cohorts of 75-year-olds born 1901-1902 and 1930. METHODS: Two population-based birth cohorts were examined at the age of 75 years in 1976-1977 and in 2005-2006. Psychogenic needs according to Murray were measured with the Cesarec-Marke Personality Schedule (CMPS), a Swedish version of the Edwards Personal Preference Schedule...
August 31, 2016: Gerontology
https://www.readbyqxmd.com/read/27577994/microrna-17-5p-at-the-crossroads-of-cancer-and-aging-a-mini-review
#20
Hanna Dellago, Madhusudhan Reddy Bobbili, Johannes Grillari
The miR-17-92 cluster, led by its most prominent member, miR-17-5p, has been identified as the first miRNA with oncogenic potential. Thus, the whole cluster containing miR-17-5p has been termed oncomiR-1. It is strongly expressed in embryonic stem cells and has essential roles in vital processes like cell cycle regulation, proliferation and apoptosis. The importance of miR-17-5p for fundamental biological processes is underscored by the fact that a miR17-deficient mouse is neonatally lethal. Recently, miR-17-5p was identified in the context of aging, since it is comprised in a common signature of miRNAs that is downregulated in several models of aging research...
August 31, 2016: Gerontology
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