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Aging

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https://www.readbyqxmd.com/read/28800297/different-cancers-same-target
#1
Jaime Villegas, Vincenzo Borgna, Veronica A Burzio
No abstract text is available yet for this article.
August 8, 2017: Aging
https://www.readbyqxmd.com/read/28783710/dysregulation-of-mtorc1-autophagy-axis-in-senescence
#2
Bernadette Carroll, Viktor I Korolchuk
No abstract text is available yet for this article.
August 5, 2017: Aging
https://www.readbyqxmd.com/read/28783709/dysfunctional-macrophages-in-alzheimer-disease-another-piece-of-the-macroph-aging-puzzle
#3
Laura Costarelli, Marco Malavolta, Robertina Giacconi, Mauro Provinciali
No abstract text is available yet for this article.
August 5, 2017: Aging
https://www.readbyqxmd.com/read/28783711/mmr-deficiency-and-brca2-egfr-ntrk-mutations
#4
Prashanth Gokare, Amriti R Lulla, Wafik S El-Deiry
No abstract text is available yet for this article.
August 3, 2017: Aging
https://www.readbyqxmd.com/read/28768895/p16-ink4a-and-senescence-associated-%C3%AE-galactosidase-can-be-induced-in-macrophages-as-part-of-a-reversible-response-to-physiological-stimuli
#5
Brandon M Hall, Vitaly Balan, Anatoli S Gleiberman, Evguenia Strom, Peter Krasnov, Lauren P Virtuoso, Elena Rydkina, Slavoljub Vujcic, Karina Balan, Ilya I Gitlin, Katerina I Leonova, Camila R Consiglio, Sandra O Gollnick, Olga B Chernova, Andrei V Gudkov
Constitutive p16(Ink4a) expression, along with senescence-associated β-galactosidase (SAβG), are commonly accepted biomarkers of senescent cells (SCs). Recent reports attributed improvement of the healthspan of aged mice following p16(Ink4a)-positive cell killing to the eradication of accumulated SCs. However, detection of p16(Ink4a)/SAβG-positive macrophages in the adipose tissue of old mice and in the peritoneal cavity of young animals following injection of alginate-encapsulated SCs has raised concerns about the exclusivity of these markers for SCs...
August 2, 2017: Aging
https://www.readbyqxmd.com/read/28758894/synergistic-sngi-tki-combination-against-lscs
#6
Xiaoyan Jiang
No abstract text is available yet for this article.
July 30, 2017: Aging
https://www.readbyqxmd.com/read/28758893/enhancing-er-stress-in-myeloma
#7
Craig T Wallington-Beddoe, Stuart M Pitson
No abstract text is available yet for this article.
July 30, 2017: Aging
https://www.readbyqxmd.com/read/28722657/amino-acid-metabolites-mtorc1-and-aging
#8
Henri Antikainen, Khoosheh Khayati, Radek Dobrowolski
No abstract text is available yet for this article.
July 17, 2017: Aging
https://www.readbyqxmd.com/read/28722658/the-golgi-localized-gamma-ear-containing-arf-binding-gga-protein-family-alters-alpha-synuclein-%C3%AE-syn-oligomerization-and-secretion
#9
Bjoern von Einem, Judith Eschbach, Martin Kiechle, Anke Wahler, Dietmar R Thal, Pamela J McLean, Jochen H Weishaupt, Albert C Ludolph, Christine A F von Arnim, Karin M Danzer
Several age-related neurodegenerative disorders are associated with protein misfolding and aggregation of toxic peptides. α-synuclein (α-syn) aggregation and the resulting cytotoxicity is a hallmark of Parkinson's disease (PD) as well as dementia with Lewy bodies. Rising evidence points to oligomeric and pre-fibrillar forms as the pathogenic species, and oligomer secretion seems to be crucial for the spreading and progression of PD pathology. Recent studies implicate that dysfunctions in endolysosomal/autophagosomal pathways increase α-syn secretion...
July 15, 2017: Aging
https://www.readbyqxmd.com/read/28722656/corrupting-the-dna-damage-response-a-critical-role-for-rad52-in-tumor-cell-survival
#10
Rachel Lieberman, Ming You
The DNA damage response enables cells to survive, maintain genome integrity, and to safeguard the transmission of high-fidelity genetic information. Upon sensing DNA damage, cells respond by activating this multi-faceted DNA damage response leading to restoration of the cell, senescence, programmed cell death, or genomic instability if the cell survives without proper repair. However, unlike normal cells, cancer cells maintain a marked level of genomic instability. Because of this enhanced propensity to accumulate DNA damage, tumor cells rely on homologous recombination repair as a means of protection from the lethal effect of both spontaneous and therapy-induced double-strand breaks (DSBs) in DNA...
July 15, 2017: Aging
https://www.readbyqxmd.com/read/28696945/correction-the-complex-genetics-of-gait-speed-genome-wide-meta-analysis-approach
#11
Dan Ben-Avraham, David Karasik, Joe Verghese, Kathryn L Lunetta, Jennifer A Smith, John D Eicher, Rotem Vered, Joris Deelen, Alice M Arnold, Aron S Buchman, Toshiko Tanaka, Jessica D Faul, Maria Nethander, Myriam Fornage, Hieab H Adams, Amy M Matteini, Michele L Callisaya, Albert V Smith, Lei Yu, Philip L De Jager, Denis A Evans, Vilmundur Gudnason, Albert Hofman, Alison Pattie, Janie Corley, Lenore J Launer, Davis S Knopman, Neeta Parimi, Stephen T Turner, Stefania Bandinelli, Marian Beekman, Danielle Gutman, Lital Sharvit, Simon P Mooijaart, David C Liewald, Jeanine J Houwing-Duistermaat, Claes Ohlsson, Matthijs Moed, Vincent J Verlinden, Dan Mellström, Jos N van der Geest, Magnus Karlsson, Dena Hernandez, Rebekah McWhirter, Yongmei Liu, Russell Thomson, Gregory J Tranah, Andre G Uitterlinden, David R Weir, Wei Zhao, John M Starr, Andrew D Johnson, M Arfan Ikram, David A Bennett, Steven R Cummings, Ian J Deary, Tamara B Harris, Sharon L R Kardia, Thomas H Mosley, Velandai K Srikanth, Beverly G Windham, Ann B Newman, Jeremy D Walston, Gail Davies, Daniel S Evans, Eline P Slagboom, Luigi Ferrucci, Douglas P Kiel, Joanne M Murabito, Gil Atzmon
No abstract text is available yet for this article.
July 7, 2017: Aging
https://www.readbyqxmd.com/read/28783714/aging-and-calorie-restriction-regulate-the-expression-of-mir-125a-5p-and-its-target-genes-stat3-casp2-and-stard13
#12
Kuldeep Makwana, Sonal Arvind Patel, Nikkhil Velingkaar, Jey Sabith Ebron, Girish C Shukla, Roman V Kondratov V Kondratov
Calorie restriction (CR) is a dietary intervention known to delay aging. In order, to understand molecular mechanisms of CR, we analyzed the expression of 983 MicroRNAs (miRNAs) in the liver of female mice after 2 years of 30% CR using micro-array. 16 miRNAs demonstrated significant changes in their expression upon CR in comparison with age-matched control. mmu-miR-125a-5p (miR-125a-5p) was significantly upregulated upon CR, and in agreement with this, the expression of mRNAs for its three predicted target genes: Stat3, Casp2, and Stard13 was significantly downregulated in the liver of CR animals...
July 31, 2017: Aging
https://www.readbyqxmd.com/read/28768896/the-effects-of-graded-levels-of-calorie-restriction-xi-evaluation-of-the-main-hypotheses-underpinning-the-life-extension-effects-of-cr-using-the-hepatic-transcriptome
#13
Davina Derous, Sharon E Mitchell, Lu Wang, Cara L Green, Yingchun Wang, Luonan Chen, Jing-Dong J Han, Daniel E L Promislow, David Lusseau, Alex Douglas, John R Speakman
Calorie restriction (CR) may extend longevity by modulating the mechanisms involved in aging. Different hypotheses have been proposed for its main mode of action. We quantified hepatic transcripts of male C57BL/6 mice exposed to graded levels of CR (0% to 40% CR) for three months, and evaluated the responses relative to these various hypotheses. Of the four main signaling pathways implied to be linked to the impact of CR on lifespan (insulin/insulin like growth factor 1 (IGF-1), nuclear factor-kappa beta (NF-ĸB), mechanistic target of rapamycin (mTOR) and sirtuins (SIRTs)), all the pathways except SIRT were altered in a manner consistent with increased lifespan...
July 31, 2017: Aging
https://www.readbyqxmd.com/read/28758896/chemo-brain-or-tumor-brain-that-is-the-question-the-presence-of-extracranial-tumors-profoundly-affects-molecular-processes-in-the-prefrontal-cortex-of-tumorgraft-mice
#14
Anna Kovalchuk, Yaroslav Ilnytskyy, Rocio Rodriguez-Juarez, Svitlana Shpyleva, Stepan Melnyk, Igor Pogribny, Amanda Katz, David Sidransky, Olga Kovalchuk, Bryan Kolb
Cancer chemotherapy causes numerous persistent central nervous system complications. This condition is known as chemo brain. Cognitive impairments occur even before treatment, and hence are referred to as cancer associated cognitive changes, or tumor brain. There is much yet to be learned about the mechanisms of both chemo brain and tumor brain. The frequency and timing of chemo brain and tumor brain occurrence and persistence strongly suggest they may be epigenetic in nature and associated with altered gene expression...
July 29, 2017: Aging
https://www.readbyqxmd.com/read/28758895/hif-1-dependent-regulation-of-lifespan-in-caenorhabditis-elegans-by-the-acyl-coa-binding-protein-maa-1
#15
Mehrnaz Shamalnasab, Manel Dhaoui, Manjunatha Thondamal, Eva Bang Harvald, Nils J Færgeman, Hugo Aguilaniu, Paola Fabrizio
In yeast, the broadly conserved acyl-CoA-binding protein (ACBP) is a negative regulator of stress resistance and longevity. Here, we have turned to the nematode C. elegans as a model organism in which to determine whether ACBPs play similar roles in multicellular organisms. We systematically inactivated each of the seven C. elegans ACBP paralogs and found that one of them, maa-1 (which encodes membrane-associated ACBP 1), is indeed involved in the regulation of longevity. In fact, loss of maa-1 promotes lifespan extension and resistance to different types of stress...
July 27, 2017: Aging
https://www.readbyqxmd.com/read/28738022/werner-syndrome-a-model-for-sarcopenia-due-to-accelerated-aging
#16
Masaya Yamaga, Minoru Takemoto, Mayumi Shoji, Kenichi Sakamoto, Masashi Yamamoto, Takahiro Ishikawa, Masaya Koshizaka, Yoshiro Maezawa, Kazuki Kobayashi, Koutaro Yokote
Werner syndrome (WS) is a rare inheritable progeroid syndrome caused by a mutation in the WRN gene. Although WS has been described as a characteristic appearance of very slender extremities with a stocky trunk, few studies have investigated the loss of muscle mass, fat mass distribution (body composition), and mobility according to age and sex. Therefore, the aim of this study was to precisely describe the body composition in WS. Nine Japanese patients with WS (four males and five females; mean age 48±8.8 years) were recruited...
July 19, 2017: Aging
https://www.readbyqxmd.com/read/28783712/machine-learning-for-predicting-lifespan-extending-chemical-compounds
#17
Diogo G Barardo, Danielle Newby, Daniel Thornton, Taravat Ghafourian, João Pedro de Magalhães, Alex A Freitas
Increasing age is a risk factor for many diseases; therefore developing pharmacological interventions that slow down ageing and consequently postpone the onset of many age-related diseases is highly desirable. In this work we analyse data from the DrugAge database, which contains chemical compounds and their effect on the lifespan of model organisms. Predictive models were built using the machine learning method random forests to predict whether or not a chemical compound will increase Caenorhabditis elegans' lifespan, using as features Gene Ontology (GO) terms annotated for proteins targeted by the compounds and chemical descriptors calculated from each compound's chemical structure...
July 18, 2017: Aging
https://www.readbyqxmd.com/read/28783713/aging-and-sarcopenia-associate-with-specific-interactions-between-gut-microbes-serum-biomarkers-and-host-physiology-in-rats
#18
Jay Siddharth, Anirikh Chakrabarti, Alice Pannérec, Sonia Karaz, Delphine Morin-Rivron, Mojgan Masoodi, Jerome N Feige, Scott James Parkinson
The microbiome has been demonstrated to play an integral role in the maintenance of many aspects of health that are also associated with aging. In order to identify areas of potential exploration and intervention, we simultaneously characterized age-related alterations in gut microbiome, muscle physiology and serum proteomic and lipidomic profiles in aged rats to define an integrated signature of the aging phenotype. We demonstrate that aging skews the composition of the gut microbiome, in particular by altering the Sutterella to Barneseilla ratio, and alters the metabolic potential of intestinal bacteria...
July 17, 2017: Aging
https://www.readbyqxmd.com/read/28659507/pressor-response-to-angiotensin-ii-is-enhanced-in-aged-mice-and-associated-with-inflammation-vasoconstriction-and-oxidative-stress
#19
Quynh Nhu Dinh, Grant R Drummond, Barbara K Kemp-Harper, Henry Diep, T Michael De Silva, Hyun Ah Kim, Antony Vinh, Avril A B Robertson, Matthew A Cooper, Ashley Mansell, Sophocles Chrissobolis, Christopher G Sobey
Aging is commonly associated with chronic low-grade inflammation and hypertension but it is unknown whether a cause-effect relationship exists between them. We compared the sensitivity of young adult (8-12 w) and aged (23-31 mo) male C57Bl6J mice to develop hypertension in response to a slow-pressor dose of angiotensin II (Ang II; 0.28 mg/kg/d; 28 d). In young mice, the pressor response to Ang II was gradual and increased to 142±8 mmHg over 28 d. However, in aged mice, Ang II promptly increased SBP and reached 155±12 mmHg by 28 d...
June 28, 2017: Aging
https://www.readbyqxmd.com/read/28657900/brain-ageing-changes-proteoglycan-sulfation-rendering-perineuronal-nets-more-inhibitory
#20
Simona Foscarin, Ruma Raha-Chowdhury, James W Fawcett, Jessica C F Kwok
Chondroitin sulfate (CS) proteoglycans in perineuronal nets (PNNs) from the central nervous system (CNS) are involved in the control of plasticity and memory. Removing PNNs reactivates plasticity and restores memory in models of Alzheimer's disease and ageing. Their actions depend on the glycosaminoglycan (GAG) chains of CS proteoglycans, which are mainly sulfated in the 4 (C4S) or 6 (C6S) positions. While C4S is inhibitory, C6S is more permissive to axon growth, regeneration and plasticity. C6S decreases during critical period closure...
June 28, 2017: Aging
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