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Aging

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https://www.readbyqxmd.com/read/28228606/genetic-polymorphisms-rs10636-and-rs28366003-in-metallothionein-2a-increase-breast-cancer-risk-in-chinese-han-population
#1
Di Liu, Meng Wang, Tian Tian, Xi-Jing Wang, Hua-Feng Kang, Tian-Bo Jin, Shu-Qun Zhang, Hai-Tao Guan, Peng-Tao Yang, Kang Liu, Xing-Han Liu, Peng Xu, Yi Zheng, Zhi-Jun Dai
Genetic polymorphisms of MT2A are frequently observed in many different cancers. We performed this case-control study, including 459 breast cancer (BC) patients and 549 healthy controls from Northwest China, to evaluate the associations between two common MT2A polymorphisms (rs10636 and rs28366003) and BC risk. The MT2A polymorphisms were genotyped via Sequenom MassARRAY. The individuals with the rs28366003 A/G, A/G-G/G genotypes underwent a higher risk of BC (P<0.0001). And, the minor allele G of rs28366003 was related to an increased BC risk (P<0...
February 22, 2017: Aging
https://www.readbyqxmd.com/read/28222042/compound-effects-of-aging-and-experimental-fsgs-on-glomerular-epithelial-cells
#2
Remington R S Schneider, Diana G Eng, J Nathan Kutz, Mariya T Sweetwyne, Jeffrey W Pippin, Stuart J Shankland
Advanced age portends a poorer prognosis in FSGS. To understand the impact of age on glomerular podocytes and parietal epithelial cells (PECs), experimental FSGS was induced in 3m-old mice (20-year old human age) and 27m-old mice (78-year old human age) by abruptly depleting podocytes with a cytopathic anti-podocyte antibody. Despite similar binding of the disease-inducing antibody, podocyte density was lower in aged FSGS mice compared to young FSGS mice. Activated PEC density was higher in aged versus young FSGS mice, as was the percentage of total activated PECs...
February 17, 2017: Aging
https://www.readbyqxmd.com/read/28209926/characterization-of-the-influence-of-age-on-gabaa-and-glutamatergic-mediated-functions-in-the-dorsolateral-prefrontal-cortex-using-paired-pulse-tms-eeg
#3
Yoshihiro Noda, Reza Zomorrodi, Robin F H Cash, Mera S Barr, Faranak Farzan, Tarek K Rajji, Robert Chen, Zafiris J Daskalakis, Daniel M Blumberger
Gamma-aminobutyric acid (GABA)ergic and glutamatergic neurotransmissions in the prefrontal cortex decreases with age. Further, cognitive function mediated through the dorsolateral prefrontal cortex (DLPFC) also declines with age. Although neuroimaging studies have demonstrated decreased levels of these substances, direct neurophysiological data investigating the effect of aging in the DLPFC in human subjects is lacking. The advent of transcranial magnetic stimulation (TMS) combined with electroencephalography (EEG) has allowed for the assessment of functional neurotransmission in vivo...
February 16, 2017: Aging
https://www.readbyqxmd.com/read/28209927/improved-health-span-and-lifespan-in-mtdna-mutator-mice-treated-with-the-mitochondrially-targeted-antioxidant-skq1
#4
Irina G Shabalina, Mikhail Yu Vyssokikh, Natalia Gibanova, Robert I Csikasz, Daniel Edgar, Anne Hallden-Waldemarson, Zinaida Rozhdestvenskaya, Lora E Bakeeva, Valeria B Vays, Antonina V Pustovidko, Maxim V Skulachev, Barbara Cannon, Vladimir P Skulachev, Jan Nedergaard
MtDNA mutator mice exhibit marked features of premature aging. We find that these mice treated from age of ≈100 days with the mitochondria-targeted antioxidant SkQ1 showed a delayed appearance of traits of aging such as kyphosis, alopecia, lowering of body temperature, body weight loss, as well as ameliorated heart, kidney and liver pathologies. These effects of SkQ1 are suggested to be related to an alleviation of the effects of an enhanced reactive oxygen species (ROS) level in mtDNA mutator mice: the increased mitochondrial ROS released due to mitochondrial mutations probably interact with polyunsaturated fatty acids in cardiolipin, releasing malondialdehyde and 4-hydroxynonenal that form protein adducts and thus diminishes mitochondrial functions...
February 15, 2017: Aging
https://www.readbyqxmd.com/read/28209925/the-stress-polarity-pathway-ampk-giv-es-protection-against-metabolic-insults
#5
Pradipta Ghosh
Loss of cell polarity impairs organ development and function; it can also serve as one of the first triggers for oncogenesis. In 2006-2007 two groups simultaneously reported the existence of a special pathway for maintaining epithelial polarity in the face of environmental stressors. In this pathway, AMPK, a key sensor of metabolic stress stabilizes tight junctions, preserves cell polarity, and thereby, maintains epithelial barrier functions. Accumulating evidence since has shown that pharmacologic activation of AMPK by Metformin protects the epithelial barrier against multiple environmental and pathological stressful states and suppresses tumorigenesis...
February 15, 2017: Aging
https://www.readbyqxmd.com/read/28198702/epigenetic-clock-analysis-of-diet-exercise-education-and-lifestyle-factors
#6
Austin Quach, Morgan E Levine, Toshiko Tanaka, Ake T Lu, Brian H Chen, Luigi Ferrucci, Beate Ritz, Stefania Bandinelli, Marian L Neuhouser, Jeannette M Beasley, Linda Snetselaar, Robert B Wallace, Philip S Tsao, Devin Absher, Themistocles L Assimes, James D Stewart, Yun Li, Lifang Hou, Andrea A Baccarelli, Eric A Whitsel, Steve Horvath
Behavioral and lifestyle factors have been shown to relate to a number of health-related outcomes, yet there is a need for studies that examine their relationship to molecular aging rates. Toward this end, we use recent epigenetic biomarkers of age that have previously been shown to predict all-cause mortality, chronic conditions, and age-related functional decline. We analyze cross-sectional data from 4,173 postmenopausal female participants from the Women's Health Initiative, as well as 402 male and female participants from the Italian cohort study, Invecchiare nel Chianti...
February 14, 2017: Aging
https://www.readbyqxmd.com/read/28198701/deubiquitination-in-cancer-stem-cells
#7
Julia M Fraile, Diana Campos-Iglesias, José M P Freije
No abstract text is available yet for this article.
February 12, 2017: Aging
https://www.readbyqxmd.com/read/28192277/cdkn2a-p16ink4-a-expression-is-associated-with-vascular-progeria-in-chronic-kidney-disease
#8
Peter Stenvinkel, Karin Luttropp, Dagmara McGuinness, Anna Witasp, Abdul Rashid Qureshi, Annika Wernerson, Louise Nordfors, Martin Schalling, Jonaz Ripsweden, Lars Wennberg, Magnus Söderberg, Peter Bárány, Hannes Olauson, Paul G Shiels
Patients with chronic kidney disease (CKD) display a progeric vascular phenotype linked to apoptosis, cellular senescence and osteogenic transformation. This has proven intractable to modelling appropriately in model organisms. We have therefore investigated this directly in man, using for the first time validated cellular biomarkers of ageing (CDKN2A/p16(INK4a), SA-β-Gal) in arterial biopsies from 61 CKD patients undergoing living donor renal transplantation. We demonstrate that in the uremic milieu, increased arterial expression of CDKN2A/p16(INK4a) associated with vascular progeria in CKD, independently of chronological age...
February 9, 2017: Aging
https://www.readbyqxmd.com/read/28186493/telomeres-shorten-and-then-lengthen-before-fledging-in-magellanic-penguins-spheniscus-magellanicus
#9
Jack A Cerchiara, Rosa Ana Risques, Donna Prunkard, Jeffrey R Smith, Olivia J Kane, P Dee Boersma
For all species, finite metabolic resources must be allocated toward three competing systems: maintenance, reproduction, and growth. Telomeres, the nucleoprotein tips of chromosomes, which shorten with age in most species, are correlated with increased survival. Chick growth is energetically costly and is associated with telomere shortening in most species. To assess the change in telomeres in penguin chicks, we quantified change in telomere length of wild known-age Magellanic penguin (Spheniscus magellanicus) chicks every 15 days during the species' growth period, from hatching to 60 days-of-age...
February 8, 2017: Aging
https://www.readbyqxmd.com/read/28177876/long-intergenic-non-protein-coding-rna-00858-functions-as-a-competing-endogenous-rna-for-mir-422a-to-facilitate-the-cell-growth-in-non-small-cell-lung-cancer
#10
Shao-Ping Zhu, Jun-Yu Wang, Xian-Guo Wang, Jin-Ping Zhao
The expression of long non-coding RNAs (lncRNAs) is dysregulated in non-small cell lung cancer (NSCLC). However, the functions and contributions of lncRNAs remain largely unknown. Here, we identified a critical role of long intergenic non-protein coding RNA 00858 (LINC00858) in NSCLC. Ectopic expression of LINC00858 in NSCLC cells promoted cell proliferation and induced cell migration and invasion. Moreover, LINC00858 functioned as a competitive endogenous RNA (ceRNA), effectively becoming sponge for miR-422a and thereby modulating the expression of kallikrein-related peptidase 4 (KLK4)...
February 6, 2017: Aging
https://www.readbyqxmd.com/read/28177875/metabolomic-signature-associated-with-reproduction-regulated-aging-in-caenorhabditis-elegans
#11
Qin-Li Wan, Xiaohuo Shi, Jiangxin Liu, Ai-Jun Ding, Yuan-Zhu Pu, Zhigang Li, Gui-Sheng Wu, Huai-Rong Luo
In Caenorhabditis elegans (C. elegans), ablation of germline stem cells (GSCs) leads to infertility, which extends lifespan. It has been reported that aging and reproduction are both inextricably associated with metabolism. However, few studies have investigated the roles of polar small molecules metabolism in regulating longevity by reproduction. In this work, we combined the nuclear magnetic resonance (NMR) and ultra-performance liquid chromatography-mass spectrometry (UPLC-MS) to profile the water-soluble metabolome in C...
February 6, 2017: Aging
https://www.readbyqxmd.com/read/28161695/computerized-cognitive-training-and-brain-derived-neurotrophic-factor-during-bed-rest-mechanisms-to-protect-individual-during-acute-stress
#12
Angelina Passaro, Cecilia Soavi, Uros Marusic, Enrico Rejc, Juana M Sanz, Mario L Morieri, Edoardo Dalla Nora, Voyko Kavcic, Marco V Narici, Carlo Reggiani, Gianni Biolo, Giovanni Zuliani, Stefano Lazzer, Rado Pišot
Acute stress, as bed rest, was shown to increase plasma level of the neurotrophin brain-derived neurotrophic factor (BDNF) in older, but not in young adults. This increase might represent a protective mechanism towards acute insults in aging subjects. Since computerized cognitive training (CCT) is known to protect brain, herein we evaluated the effect of CCT during bed rest on BDNF, muscle mass, neuromuscular function and metabolic parameters. The subjects that underwent CCT did not show an increase of BDNF after bed rest, and showed an anti-insular modification pattern in metabolism...
February 3, 2017: Aging
https://www.readbyqxmd.com/read/28160545/impact-of-resistance-training-on-the-autophagy-inflammation-apoptosis-crosstalk-in-elderly-subjects
#13
Yubisay Mejías-Peña, Brisamar Estébanez, Paula Rodriguez-Miguelez, Rodrigo Fernandez-Gonzalo, Mar Almar, José A de Paz, Javier González-Gallego, María J Cuevas
Aging is associated with a decline in autophagy and a state of low-grade inflammation which further affects apoptosis and autophagy. Importantly, these alterations could reverse with regular physical activity. This study assessed the effects of a resistance exercise training program on autophagy, NLRP3 inflammasome, and apoptosis in peripheral blood mononuclear cells (PBMCs) from old subjects. Twenty-six healthy women and men (age, 69.6±1.5 yr) were randomized to a training (TG) or a control (CG) group. TG performed an 8-week resistance training program, while CG followed their daily routines...
February 2, 2017: Aging
https://www.readbyqxmd.com/read/28148887/mir-146a-and-mir-196a-2-polymorphisms-are-associated-with-hepatitis-virus-related-hepatocellular-cancer-risk-a-meta-analysis
#14
Tian Tian, Meng Wang, Wenge Zhu, Zhi-Ming Dai, Shuai Lin, Peng-Tao Yang, Xing-Han Liu, Kang Liu, Yu-Yao Zhu, Yi Zheng, Meng Liu, Zhi-Jun Dai
Previous studies have investigated the role of miR-146a rs2910164 and miR-196a-2 rs11614913 polymorphisms in hepatocellular carcinoma (HCC) susceptibility, but the results are contradictory and few specifically studied hepatitis virus-related HCC. Therefore, we conducted a meta-analysis to evaluate the association between these two polymorphisms and hepatitis virus-related HCC risk. We performed a systematical search in EMBASE, PubMed, Web of Science, CNKI and Wanfang databases as of 25th November, 2016. Finally, we assessed 14 studies involving 3852 cases and 5275 controls...
January 31, 2017: Aging
https://www.readbyqxmd.com/read/28121621/the-expression-of-the-bpifb4-and-cxcr4-associates-with-sustained-health-in-long-living-individuals-from-cilento-italy
#15
Gaia Spinetti, Elena Sangalli, Claudia Specchia, Francesco Villa, Chiara Spinelli, Rita Pipolo, Albino Carrizzo, Simona Greco, Christine Voellenkle, Carmine Vecchione, Paolo Madeddu, Fabio Martelli, Annibale Alessandro Puca
: The study of the health status in long-living individuals (LLIs) may help identifying health-span and life-span determinants. BPI-Fold-Containing-Family-B-Member-4 (BPIFB4) protein is higher in healthy vs. non-healthy (frail) LLIs serum and its longevity-associated variant forced expression improves cardiovascular outcomes in ischemia mice models. Thus, we tested the association of BPIFB4 and ischemia-responding HIF-1α pathway components (i.e. CXCR4, AK3, ALDO-C, ADM, VEGF-A, GLUT-1 and miR-210) with human life-span and health-span by analyzing mRNA expression in circulating mononuclear cells (MNCs) of LLIs (N=14 healthy; N=31 frail) and young controls (N=63)...
January 22, 2017: Aging
https://www.readbyqxmd.com/read/28121620/hypothalamic-%C3%AE-fosb-prevents-age-related-metabolic-decline-and-functions-via-sns
#16
Kazusa Sato, Anna Idelevich, Kenichi Nagano, Glenn C Rowe, Francesca Gori, Roland Baron
The ventral hypothalamus (VHT) integrates several physiological cues to maintain glucose homeostasis and energy balance. Aging is associated with increased glucose intolerance but the underlying mechanisms responsible for age-related metabolic decline, including neuronal signaling in the VHT, remain elusive. We have shown that mice with VHT-targeted overexpression of ∆FosB, a splice variant of the AP1 transcription factor FosB, exhibit increased energy expenditure, leading to decreased adiposity. Here, we show that VHT-targeted overexpression of ∆FosB also improves glucose tolerance, increases insulin sensitivity in target organs and thereby suppresses insulin secretion...
January 20, 2017: Aging
https://www.readbyqxmd.com/read/28148904/targeting-braf-mutant-tumours-with-tgfbr1-inhibitors
#17
Lindsay C Spender, Gareth J Inman
No abstract text is available yet for this article.
January 31, 2017: Aging
https://www.readbyqxmd.com/read/28132958/a-review-of-the-biomedical-innovations-for-healthy-longevity
#18
Alexey Moskalev, Vladimir Anisimov, Aleksander Aliper, Artem Artemov, Khusru Asadullah, Daniel Belsky, Ancha Baranova, Aubrey de Grey, Vishwa Deep Dixit, Edouard Debonneuil, Eugenia Dobrovolskaya, Peter Fedichev, Alexander Fedintsev, Vadim Fraifeld, Claudio Franceschi, Rosie Freer, Tamas Fülöp, Jerome Feige, David Gems, Vadim Gladyshev, Vera Gorbunova, Irina Irincheeva, Sibylle Jager, S Michal Jazwinski, Matt Kaeberlein, Brian Kennedy, Daria Khaltourina, Igor Kovalchuk, Olga Kovalchuk, Sergey Kozin, Alexander Kulminski, Ekaterina Lashmanova, Ksenia Lezhnina, Guang-Hui Liu, Valter Longo, Polina Mamoshina, Alexander Maslov, Joao Pedro de Magalhaes, James Mitchell, Arnold Mitnitski, Yuri Nikolsky, Ivan Ozerov, Elena Pasyukova, Darya Peregudova, Vasily Popov, Ekaterina Proshkina, Evgeny Putin, Evgeny Rogaev, Blanka Rogina, Jane Schastnaya, Andrey Seluanov, Mikhail Shaposhnikov, Andreas Simm, Vladimir Skulachev, Maxim Skulachev, Ilya Solovev, Stephen Spindler, Natalia Stefanova, Yousin Suh, Andrew Swick, John Tower, Andrei V Gudkov, Jan Vijg, Andrey Voronkov, Michael West, Wolfgang Wagner, Anatoliy Yashin, Nadezhda Zemskaya, Zhaxybay Zhumadilov, Alex Zhavoronkov
No abstract text is available yet for this article.
January 29, 2017: Aging
https://www.readbyqxmd.com/read/28130552/melatonin-micronutrients-osteopenia-treatment-study-mots-a-translational-study-assessing-melatonin-strontium-citrate-vitamin-d3-and-vitamin-k2-mk7-on-bone-density-bone-marker-turnover-and-health-related-quality-of-life-in-postmenopausal-osteopenic-women-following
#19
Sifat Maria, Mark H Swanson, Larry T Enderby, Frank D'Amico, Brianna Enderby, Rebekah M Samsonraj, Amel Dudakovic, Andre J van Wijnen, Paula A Witt-Enderby
This one-year double blind randomized control trial assessed the effects of nightly melatonin, strontium (citrate), vitamin D3 and vitamin K2 (MK7; MSDK) on bone mineral density (BMD) and quality of life (QOL) in postmenopausal osteopenic women (ages 49-75). Compared to placebo, MSDK treatment increased BMD in lumbar spine (4.3%) and left femoral neck (2.2%), with an upward trend for total left hip (p=0.069). MSDK increased serum P1NP levels and reduced bone turnover (CTx:P1NP). Psychometric analyses indicated that mood and sleep quality improved for the MSDK group...
January 26, 2017: Aging
https://www.readbyqxmd.com/read/28130553/esr1-mutations-in-breast-cancer
#20
Florian Clatot, Laetitia Augusto, Frédéric Di Fiore
No abstract text is available yet for this article.
January 25, 2017: Aging
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