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https://www.readbyqxmd.com/read/28647809/left-ventricles-of-aging-athletes-better-untwisters-but-not-more-relaxed-during-exercise
#1
Claire Maufrais, G Doucende, T Rupp, M Dauzat, P Obert, S Nottin, I Schuster
OBJECTIVE: With an aging population and the increasing prevalence of heart failure with preserved ejection fraction, developing strategies to prevent diastolic dysfunction is crucial. Regular endurance training has been suggested to be one such strategy. However, the underlying mechanisms of training, including the effect on left ventricular (LV) untwist, which promotes LV filling, are unclear and studies exploring the heart during exercise in the aging heart are lacking. METHODS: Cardiopulmonary exercise testing with speckle tracking echocardiography was realized in male subjects: 16 young athletes (YA), 19 young controls (YC), 22 middle-aged athletes (MA) with a lifelong history of endurance training, and 20 middle-aged controls (MC)...
June 24, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/28647803/chronic-joint-pain-and-handgrip-strength-correlates-with-osteoporosis-in-mid-life-women-a-singaporean-cohort
#2
S Logan, W P P Thu, W K Lay, L Y Wang, J A Cauley, E L Yong
This study aimed to identify novel correlates which may relate to low bone mass at lumbar spine in mid-life Asian women. The possibility of developing a prediction model for osteoporosis (OP) was explored which resulted in a risk assessment tool that performed better than currently available tools. INTRODUCTION: In order to identify novel correlates associated with low spinal bone mineral density (BMD) in mid-life women, we examined a large number of lifestyle and medical and performance measurements and developed a prediction model for triage to BMD scanning...
June 24, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28647726/treatments-for-gestational-diabetes-a-systematic-review-and-meta-analysis
#3
Diane Farrar, Mark Simmonds, Maria Bryant, Trevor A Sheldon, Derek Tuffnell, Su Golder, Debbie A Lawlor
OBJECTIVE: To investigate the effectiveness of different treatments for gestational diabetes mellitus (GDM). DESIGN: Systematic review, meta-analysis and network meta-analysis. METHODS: Data sources were searched up to July 2016 and included MEDLINE and Embase. Randomised trials comparing treatments for GDM (packages of care (dietary and lifestyle interventions with pharmacological treatments as required), insulin, metformin, glibenclamide (glyburide)) were selected by two authors and double checked for accuracy...
June 24, 2017: BMJ Open
https://www.readbyqxmd.com/read/28647612/evolution-of-human-apolipoprotein-e-apoe-isoforms-gene-structure-protein-function-and-interaction-with-dietary-factors
#4
REVIEW
Patricia Huebbe, Gerald Rimbach
Apolipoprotein E (APOE) is a member of the vertebrate protein family of exchangeable apolipoproteins that is characterized by amphipathic α-helices encoded by multiple nucleotide tandem repeats. Its equivalent in flying insects - apolipophorin-III - shares structural and functional commonalities with APOE, suggesting the possibility of an evolutionary relationship between the proteins. In contrast to all other known species, human APOE is functionally polymorphic and possesses three major allelic variants (ε4, ε3 and ε2)...
June 21, 2017: Ageing Research Reviews
https://www.readbyqxmd.com/read/28647439/testing-the-effects-of-expression-intensity-and-age-on-emotional-face-processing-in-asd
#5
Rhiannon J Luyster, Johanna Bick, Alissa Westerlund, Charles A Nelson
Individuals with autism spectrum disorder (ASD) commonly show global deficits in the processing of facial emotion, including impairments in emotion recognition and slowed processing of emotional faces. Growing evidence has suggested that these challenges may increase with age, perhaps due to minimal improvement with age in individuals with ASD. In the present study, we explored the role of age, emotion type and emotion intensity in face processing for individuals with and without ASD. Twelve- and 18 to 22- year-old children with and without ASD participated...
June 21, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28647426/age-related-changes-in-structural-connectivity-are-improved-using-subject-specific-thresholding
#6
Corinna M Bauer, Lauren E Zajac, Bang-Bon Koo, Ronald J Killiany, Lotfi B Merabet
BACKGROUND: Deterministic diffusion tractography obtained from high angular resolution diffusion imaging (HARDI) requires user-defined quantitative anisotropy (QA) thresholds. Most studies employ a common threshold across all subjects even though there is a strong degree of individual variation within groups. We sought to explore whether it would be beneficial to use individual thresholds in order to accommodate individual variance. To do this, we conducted two independent experiments...
June 21, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28647202/the-current-state-of-teleophthalmology-in-the-united-states
#7
REVIEW
Siddarth Rathi, Edmund Tsui, Nitish Mehta, Sarwar Zahid, Joel S Schuman
Telemedicine services facilitate the evaluation, diagnosis, and management of the remote patient. Telemedicine has rapidly flourished in the United States and has improved access to care, outcomes, and patient satisfaction. However, the use of telemedicine in ophthalmology is currently in its infancy and has yet to gain wide acceptance. Current models of telemedicine in ophthalmology are largely performed via "store and forward" methods, but remote monitoring and interactive modalities exist. Although studies have examined the effects of telemedicine, few reports have characterized its current status...
June 21, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28647092/regulating-secretory-proteostasis-through-the-unfolded-protein-response-from-function-to-therapy
#8
REVIEW
Lars Plate, R Luke Wiseman
Imbalances in secretory proteostasis induced by genetic, environmental, or aging-related insults are pathologically associated with etiologically diverse protein misfolding diseases. To protect the secretory proteome from these insults, organisms evolved stress-responsive signaling pathways that regulate the composition and activity of biologic pathways involved in secretory proteostasis maintenance. The most prominent of these is the endoplasmic reticulum (ER) unfolded protein response (UPR), which functions to regulate ER proteostasis in response to ER stress...
June 21, 2017: Trends in Cell Biology
https://www.readbyqxmd.com/read/28646912/influences-of-age-related-changes-in-mesenchymal-stem-cells-on-macrophages-during-in-vitro-culture
#9
Yuan Yin, Rui-Xin Wu, Xiao-Tao He, Xin-Yue Xu, Jia Wang, Fa-Ming Chen
BACKGROUND: Mesenchymal stem cells (MSCs) have been widely used in cytotherapy and tissue engineering due to their immunosuppressive ability and regenerative potential. Recently, the immunomodulatory influence of MSCs has been gaining increasing attention because their functional roles in modulating immune responses likely have high clinical significance. METHODS: In this study, we investigated the influence of MSCs on macrophages (Mφs) in in-vitro cell culture systems...
June 24, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28646699/insulin-and-the-polycystic-ovary-syndrome
#10
REVIEW
Djuro Macut, Jelica Bjekić-Macut, Dario Rahelić, Mirjana Doknić
Polycystic ovary syndrome (PCOS) is the most prevalent endocrinopathy among women during reproductive age. PCOS is characterised by hyperandrogenaemia, hyperinsulinaemia, and deranged adipokines secretion from the adipose tissue. In addition to the reduced insulin sensitivity, PCOS women exhibit β-cell dysfunction as well. Low birth weight and foetal exposure to androgens may contribute to the development of the PCOS phenotype during life. Further metabolic complications lead to dyslipidaemia, worsening obesity and glucose tolerance, high prevalence of metabolic syndrome, and greater susceptibility to diabetes...
June 12, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28646503/personality-change-across-the-lifespan-insights-from-a-cross-cultural-longitudinal-study
#11
William J Chopik, Shinobu Kitayama
OBJECTIVE: Personality traits are characterized by both stability and change across the lifespan. Many of the mechanisms hypothesized to cause personality change (e.g., the timing of various social roles, physical health, and cultural values) differ considerably across culture. Moreover, personality consistency is valued highly in Western societies, but less so in non-Western societies. Few studies have examined how personality changes differently across cultures. METHOD: We employed a multi-level modeling approach to examine age-related changes in Big Five personality traits in two large panel studies of Americans (n = 6,259; Mage = 46...
June 23, 2017: Journal of Personality
https://www.readbyqxmd.com/read/28646441/safety-efficacy-and-refractive-outcomes-of-lasik-surgery-in-patients-aged-65-or-older
#12
Paloma López-Montemayor, Jorge E Valdez-García, Denise Loya-García, Julio C Hernandez-Camarena
PURPOSE: Report on the safety, efficiency and refractive outcomes of LASIK surgery in patients aged 65 or older. METHODS: This study includes a case series of patients ≥65 years that underwent corneal refractive surgery during the period June 2010 to June 2015 at Hospital Zambrano Hellion, Monterrey, Mexico. Inclusion criteria were normal topography, central corneal thickness >500 μm, preoperative manifest refraction spherical equivalent (MRSE) up to -8...
June 23, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28646079/identification-of-flavin-containing-monooxygenase-5-fmo5-as-a-regulator-of-glucose-homeostasis-and-a-potential-sensor-of-gut-bacteria
#13
Flora Scott, Sandra G Gonzalez Malagon, Brett A O'Brien, Diede Fennema, Sunil Veeravalli, Clarissa R Coveney, Ian R Phillips, Elizabeth A Shephard
We have previously identified flavin-containing monooxygenase 5 (FMO5) as a regulator of metabolic ageing. The aim of the present study was to investigate the role of FMO5 in glucose homeostasis and the impact of diet and gut flora on the phenotype of mice in which the Fmo5 gene has been disrupted (Fmo5(-/-) mice). In comparison with wild-type (WT) counterparts, Fmo5(-/-) mice are resistant to age-related changes in glucose homeostasis and maintain the higher glucose tolerance and insulin sensitivity characteristic of young animals...
June 23, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28645861/protective-effect-of-lycium-barbarum-polysaccharides-on-dextromethorphan-induced-mood-impairment-and-neurogenesis-suppression
#14
Kevin Kai-Ting Po, Joseph Wai-Hin Leung, Jackie Ngai-Man Chan, Timothy Kai-Hang Fung, Dalinda Isabel Sánchez-Vidaña, Emily Lok-Lam Sin, Kwok-Fai So, Benson Wui-Man Lau, Andrew Man-Hong Siu
Dextromethorphan (DXM) is one of the common drugs abused by adolescents. It is the active ingredient found in cough medicine which is used for suppressing cough. High dosage of DXM can induce euphoria, dissociative effects and even hallucinations. Chronic use of DXM may also lead to depressive-related symptoms. Lycium barbarum, commonly known as wolfberry, has been used as a traditional Chinese medicine for the treatment of ageing-related neurodegenerative diseases. A recent study has shown the potential beneficial effect of Lycium barbarum to reduce depression-like behavior...
June 20, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28645598/efficacy-of-early-surgery-for-neurological-improvement-in-spinal-cord-injury-without-radiographic-evidence-of-trauma-in-the-elderly
#15
Tomoo Inoue, Shinsuke Suzuki, Toshiki Endo, Hiroshi Uenohara, Teiji Tominaga
OBJECT: The optimal timing for surgery for patients with spinal cord injury without radiographic evidence of trauma (SCIWORET) remains unclear. This is especially true in the elderly, because most studies are done with younger patients to avoid age-related comorbidities. We therefore aimed to compare the efficacy of early (less than 24 hours post-injury) versus late (more than 24 hours post-injury) surgery in patients with SCIWORET aged 65 years or older. METHODS: We identified patients aged 65 years or older who underwent surgery for SCIWORET between January 1995 and February 2016...
June 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28644873/circular-rna-expression-profiling-of-human-granulosa-cells-during-maternal-aging-reveals-novel-transcripts-associated-with-assisted-reproductive-technology-outcomes
#16
Jing Cheng, Jia Huang, Suzhen Yuan, Su Zhou, Wei Yan, Wei Shen, Yun Chen, Xi Xia, Aiyue Luo, Da Zhu, Shixuan Wang
Circular RNAs (circRNAs) are a unique class of endogenous RNAs which could be used as potential diagnostic and prognostic biomarkers of many diseases. Our study aimed to investigate circRNA profiles in human granulosa cells (GCs) during maternal aging and to uncover age-related circRNA variations that potentially reflect decreased oocyte competence. CircRNAs in GCs from in vitro fertilization (IVF) patients with young age (YA, ≤ 30 years) and advanced age (AA, ≥ 38 years) were profiled by microarray, and validated in 20 paired samples...
2017: PloS One
https://www.readbyqxmd.com/read/28644071/age-invariance-in-rapid-facial-affective-reactions-to-emotionally-valenced-stimuli
#17
Matthew R Nangle, Phoebe E Bailey, Julie D Henry, Georgina S Khlentzos, Kandice J Varcin, Alexis E Whitton
It has been suggested that an age-related positivity effect may only occur in the context of explicit information processing, but it is unclear whether this bias extends to the processing of rapid facial reactions. In addition, most studies that have looked for evidence of age-related implicit positivity have used attentional (as opposed to sensory) unawareness paradigms, or used broad-based indicators of attentional awareness that do not speak to the nature of the affective response. In the present study, younger and older adults were therefore asked to view non-facial images presented supraliminally (i...
June 23, 2017: Quarterly Journal of Experimental Psychology: QJEP
https://www.readbyqxmd.com/read/28644061/diffusion-weighted-magnetic-resonance-imaging-in-the-assessment-of-choroid-plexus-aging
#18
Banu Alicioglu, Guliz Yilmaz, Ozgur Tosun, Nail Bulakbasi
Recent studies have pointed out dysfunction and histopathological changes of the choroid plexuses (CPs) with aging. This paper reviews apparent diffusion coefficient (ADC) values of the CPs for age-related changes. All the brain MR images of the patients between January 2013 and June 2014 in our Radiology Department were retrospectively investigated. Patients with major cranial abnormalities (brain tumors, hyperacute or acute ischemia, developmental anomalies, hemorrhage, hydrocephaly) were excluded. Diffusion-weighted images were obtained at the parameter values of b = 1000 s/mm(2) in the axial plane...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28643996/age-related-outcome-of-patients-after-traumatic-brain-injury-a-single-centre-observation
#19
Rolf Erlebach, Alberto Pagnamenta, Stephanie Klinzing, Federica Stretti, Silvia Cottini, Reto Schüpbach, Peter Steiger, Giovanna Brandi
BACKGROUND: Study-purpose is to analyze clinical features of patients with traumatic brain injury (TBI), their age-related outcomes and determinants of long- term outcome. METHODS: This retrospective cohort study was conducted in a level I University Swiss trauma center. Consecutive patients with moderate to severe TBI admitted for more than 48 hours to the Intensive Care Unit were included. Patients' and trauma characteristics, management during ICU-stay, prognostic scores and long- term outcomes were analyzed...
June 22, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28643917/estrogen-receptor-alpha-mediates-mandibular-condylar-cartilage-growth-in-male-mice
#20
J L Robinson, V Gupta, P Soria, E Clanaman, S Gurbarg, M Xu, J Chen, S Wadhwa
OBJECTIVES: In the appendicular skeleton, estrogen via ERα signalling has been shown to mediate endochondral growth plate fusion in both males and females. However, the role of ERα in mediating growth of the mandibular condylar cartilage is unknown. Thus, this study focuses on the characterization of the mandibular condylar cartilage phenotype in young and adult male ERαKO mice. SETTING: Columbia University Medical Center. MATERIAL AND METHODS: WT and ERαKO C57BL/6 male mice were sacrificed at 49 days or 9 months for phenotypic analysis...
June 2017: Orthodontics & Craniofacial Research
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