Dogs as a Model of Human Aging

Dogs are an interesting species when it comes to the study of aging. Firstly they are much closer to human metabolism and cellular biochemistry than mice, and secondly selective breeding has generated lineages with a very wide range of sizes and life spans. Thirdly, they occupy a good compromise position in the range of life spans, study cost, and similarity to humans. Mice live short lives, so studies are rapid and comparatively cheap, but there are sizable, important differences between mouse and human biochemistry. Humans live so long that most studies of aging are simply out of the question. Even in non-human primates that live half or less as long as we do, a study of aging and calorie restriction has lasted for decades, and few organizations can or will commit to that sort of effort. Interest has picked up in recent years in the dog as a model of aging, to be used in the development of therapies to slow or reverse progression of aging. This is illustrated by the activities of the Dog Aging Project, for example, which seeks to obtain data on mTOR inhibitor therapies via their use in companion animals. Given this increased interest, researchers have started to catalog the holes in present knowledge. Even though dogs are very well studied, there is plenty to room to improve the understanding of how the mechanisms of aging progress and are influenced by genetics in this species. Genetic Pathways of Aging and Their Relevance in the Dog as a Natural Model of Hum...
Source: Fight Aging! - Category: Research Authors: Tags: Medicine, Biotech, Research Source Type: blogs

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Publication date: Available online 18 January 2020Source: Redox BiologyAuthor(s): Mohamad Assi, Suzanne Dufresne, Amélie RébillardAbstractIn this paper of the special issue dedicated for the Olympics 2020, we put the light on an exciting facet of exercise-oncology, which may still be unknown to some audience. Accumulating convincing evidences show that exercise reduces cancer progression and recurrence mainly in colon and breast cancer patients. Interestingly, the positive effects of exercise on cancer outcomes were mainly observed when patients practiced vigorous exercise of 6 METs or more. At the molecular ...
Source: Redox Biology - Category: Biology Source Type: research
Authors: Bharadwaj AS, Swamy PM, Mamas MA Abstract Introduction: There are numerous shared risk factors in the etiopathogenesis of coronary artery disease (CAD) and cancer both at the epidemiologic and molecular level. Additionally, the different modalities of treatment of cancer such as radiation, chemotherapy, immunotherapy and hormonal therapies further increase the risk of CAD and acute coronary syndrome. Most large database analysis and single center experiences have shown that cancer patients undergoing PCI are at an increased risk of in-hospital mortality, bleeding repeat revascularization.Areas covered: In ...
Source: Expert Review of Cardiovascular Therapy - Category: Cardiology Tags: Expert Rev Cardiovasc Ther Source Type: research
Conclusions: Salvage chemotherapy (often with rituximab and radiotherapy), followed by HDT and stem cell transplantation, appears to be the standard real-world treatment for rrPMBCL. However, large prospective and retrospective studies are warranted to improve our knowledge of real-world treatment patterns. PMID: 31951774 [PubMed - as supplied by publisher]
Source: Expert Review of Hematology - Category: Hematology Tags: Expert Rev Hematol Source Type: research
Authors: Annibale B, Esposito G, Lahner E Abstract SUMMARYIntroduction: Atrophic gastritis (AG) is a complex syndrome which arise as consequence of H. pylori infection or in the context of gastric autoimmunity. It often deserves a benign course, but may lead to potentially life-threatening complications: cancer and anaemia. This review aims to address traditional and innovative knowledge on this often under-diagnosed disorder.Areas covered: This review covers clinical presentation, risk factors, diagnosis and management of AG and provides an updated resource for clinicians to get insight in this challenging disorde...
Source: Expert Review of Gastroenterology and Hepatology - Category: Gastroenterology Tags: Expert Rev Gastroenterol Hepatol Source Type: research
Conclusions: Over a one year period, most dual users still smoked tobacco cigarettes. Frequency of cigarette and e-cigarette use at Wave 1 were each associated with odds of smoking abstinence. Findings suggest that daily e-cigarette use may increase dual users' chances of becoming smoke free. PMID: 31951489 [PubMed - as supplied by publisher]
Source: Substance Use and Misuse - Category: Addiction Tags: Subst Use Misuse Source Type: research
We present the case of a 37-year-old asymptomatic female who underwent right ovarian cystectomy for a mature cystic teratoma and was found to have an intra-tumoral paraganglioma. More research is needed to determine metastatic potential as well as the likelihood of recurrence of these unique neoplasms.
Source: Gynecologic Oncology Reports - Category: OBGYN Source Type: research
ConclusionFor advanced endometrial cancer patients, surgery in addition to chemotherapy confers a survival advantage except when optimal debulking cannot be achieved.
Source: Gynecologic Oncology Reports - Category: OBGYN Source Type: research
TERMINALLY-ILL cancer patients are stunning medical experts by getting the all-clear after being given an NHS therapy dubbed “the Lazarus treatment”. The “transformational” form of immunotherapy reprogrammes the immune system so that it destroys the cancer, with tumours shrinking within days.
Source: Daily Express - Health - Category: Consumer Health News Source Type: news
This article seeks to shed light on the dualistic role of Wnt signalling in liver regeneration following injury and how Wnt signalling can regulate scar formation. It also discusses how Wnt signalling cooperates with other classical fibrogenic signalling cascades, such as TGFβ signalling. Finally, the article examines recent advances in the development of Wnt signalling pathway inhibitors and asks whether repurposing these agents as anti-fibrotic therapies is a realistic option.Expert Opinion: The understanding of Wnt signalling in liver regeneration and fibrosis is in its infancy and whilst new generations of Wnt pat...
Source: Expert Opinion on Investigational Drugs - Category: Drugs & Pharmacology Tags: Expert Opin Investig Drugs Source Type: research
Abstract Protein N-glycosylation plays crucial roles in many biological processes and has close association with the occurrence and development of various cancers. Therefore, it is necessary to analyze the abnormal changes of N-glycopeptides in complex biological samples for biomarker discovery. However, due to their low abundance and poor ionization, N-glycopeptides identification in complex samples by mass spectrometry (MS) is still a challenging task. In this work, a novel magnetic hydrophilic material was prepared by serial functionalization of ultra-thin two-dimensional molybdenum disulfide with Fe3O4 nanopar...
Source: Analytica Chimica Acta - Category: Chemistry Authors: Tags: Anal Chim Acta Source Type: research
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