Inhibition of ATM Kinase Reduces Cellular Senescence and SASP in Progeroid Mice

Progeroid mice with DNA repair deficiencies exhibit an accelerated formation of senescent cells and manifestation of age-related conditions. This class of animal model has been used in research relating to cellular senescence in order to cost-effectively demonstrate that targeted removal of senescent cells is beneficial. However, one still needs to be careful when drawing conclusions based on their peculiar biochemistry. Progeria of this nature is quite unlike normal aging at the detail level. Cells become senescent in response to reaching the Hayflick limit, tissue injury, molecular damage, or a toxic environment. A senescent cell ceases replication and generates senescence-associated secretory phenotype (SASP), a mix of signals that encourages both tissue remodeling and an immune response to destroy the senescent cell. In young people near all senescent cells are efficiently destroyed soon after their creation, but in older people senescent cells linger to cause chronic inflammation and tissue dysfunction. A great deal of effort is going into deeper explorations of the biochemistry of cellular senescence these days. This is in no small part because any new discovery might have the potential to become a therapy that can treat numerous age-related conditions, and even aging itself, by alleviating the burden of senescent cells and their inflammatory, harmful signaling. Researchers here identify an important regulator gene linking DNA damage with cellular s...
Source: Fight Aging! - Category: Research Authors: Tags: Medicine, Biotech, Research Source Type: blogs

Related Links:

Publication date: Available online 24 May 2020Source: Journal of Vascular and Interventional RadiologyAuthor(s): Kasey Halsey, Jing Wu, Chang Su, Ben Hsieh, Thomas Yi, Scott A. Collins, Benjamin Kimia, Paul J. Zhang, Terrance Healey, Zishu Zhang, Harrison X. Bai
Source: Journal of Vascular and Interventional Radiology - Category: Radiology Source Type: research
Publication date: Available online 24 May 2020Source: European Journal of RadiologyAuthor(s): Lisa Loi, Ferdinand Zimmermann, Steffen Goerke, Andreas Korzowski, Jan-Eric Meissner, Katerina Deike-Hofmann, Anne Stieber, Peter Bachert, Mark Edward Ladd, Heinz-Peter Schlemmer, Sebastian Bickelhaupt, Sarah Schott, Daniel Paech
Source: European Journal of Radiology - Category: Radiology Source Type: research
ConclusionThe proposed multiparametric MRI-based SLICs+MTh method performs noninvasive assessment of NACT response in osteosarcoma that may improve cancer treatment monitoring, planning, and overall prognosis.Key Points• The simple linear iterative clustering supervoxels and Otsu multithresholding-based technique (SLICs+MTh) successfully estimates the proportion of necrosis, viable tumor, and edema in osteosarcoma in the course of chemotherapy.• The proposed technique is noninvasive and uses multiparametric MRI to measure necrosis as an indication of anticancer treatment response.• SLICs+MTh-based necrosis w...
Source: European Radiology - Category: Radiology Source Type: research
Publication date: Available online 24 May 2020Source: Pathology - Research and PracticeAuthor(s): Tania Franceschini, Elisa Capizzi, Francesco Massari, Riccardo Schiavina, Michelangelo Fiorentino, Francesca Giunchi
Source: Pathology Research and Practice - Category: Pathology Source Type: research
Both hair graying and hair loss with age are well researched topics, but there remains considerable uncertainty over which of the possible mechanisms involved are the most relevant, or most useful as targets for therapy. This state of affairs is well illustrated by the feverish interest that attends any possible advance towards reversing male and female pattern baldness. Also the sizable marketplaces devoted to treatments that work poorly, if at all. Today's trial results are interesting, in that I don't recall seeing stem cell factors being used topically before. There is of course a great deal of nonsense and unsc...
Source: Fight Aging! - Category: Research Authors: Tags: Medicine, Biotech, Research Source Type: blogs
Psychologists say anxiety and uncertainty prompt irrational decisions — like turning down a transplant when an organ becomes available.
Source: NYT Health - Category: Consumer Health News Authors: Tags: Transplants Emergency Medical Treatment Coronavirus (2019-nCoV) Liver Fear (Emotion) Anxiety and Stress Cancer Heart your-feed-science your-feed-healthcare Source Type: news
Publication date: August 2020Source: Biomedicine &Pharmacotherapy, Volume 128Author(s): Qingzhi Guo, Li Li, Qimei Bo, Li Chen, Li Sun, Hongtang Shi
Source: Biomedicine and Pharmacotherapy - Category: Drugs & Pharmacology Source Type: research
Publication date: Available online 24 May 2020Source: PhytomedicineAuthor(s): Nani Wang, Pingcui Xu, Xuping Wang, Weixuan Yao, Binjie Wang, Yuanzhao Wu, Dan Shou
Source: Phytomedicine - Category: Drugs & Pharmacology Source Type: research
This study delves into the mechanisms by which a short period of fasting can accelerate wound healing. Fasting triggers many of the same cellular stress responses, such as upregulated autophagy, as occur during the practice of calorie restriction. It isn't exactly the same, however, so it is always worth asking whether any specific biochemistry observed in either case does in fact occur in both situations. In particular, the period of refeeding following fasting appears to have beneficial effects that are distinct from those that occur while food is restricted. Multiple forms of therapeutic fasting have been repor...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
The world's most celebrated athlete standing on the podium in Rio in honor of receiving yet another gold medal has something important in common with your lazy uncle throwing back a cold one in his Barcalounger. Yes, swimming powerhouse Michael Phelps, purple-spotted from cupping therapy, and your slovenly relative with a beer gut both share a bond -- a weakness in succumbing to the allure of voodoo medicine. Modern-day snake oil salesmen hawking quick cures and TV doctors peddling the latest diet miracle with blatantly ridiculous claims are everywhere on the tube, social media, the supermarket and old-fashioned billboards...
Source: Science - The Huffington Post - Category: Science Source Type: news
More News: Biochemistry | Biotechnology | Brain | Cancer | Cancer & Oncology | Environmental Health | Gastroschisis Repair | Genetics | Neurology | Orthopaedics | Osteoporosis | Peripheral Neuropathy | Research | Stem Cell Therapy | Stem Cells | Toxicology