Fight Aging! Newsletter, July 1st 2019
In this study, we determine whether transient reintroduction of embryonic stem cell cycle miR-294 promotes cardiomyocyte cell cycle reentry enhancing cardiac repair after myocardial injury. A doxycycline-inducible AAV9-miR-294 vector was delivered to mice for activating miR-294 in myocytes for 14 days continuously after myocardial infarction. miR-294-treated mice significantly improved left ventricular functions together with decreased infarct size and apoptosis 8 weeks after MI. Myocyte cell cycle reentry increased in miR-294 hearts parallel to increased small myocyte number in the heart. Isolated adult myocytes from miR-294 hearts showed upregulation of cell cycle markers and miR-294 targets 8 weeks after MI. Thus ectopic transient expression of miR-294 recapitulates developmental signaling and phenotype in cardiomyocytes promoting cell cycle reentry that leads to augmented cardiac function in mice after myocardial infarction. Evidence for Senescent Cells to Cause Aortic Aneurysms https://www.fightaging.org/archives/2019/06/evidence-for-senescent-cells-to-cause-aortic-aneurysms/ Cells enter a senescent state in response to molecular damage, a toxic environment, reaching the Hayflick limit on replication, or to aid in wound healing, among other reasons. A senescent cell halts replication and begins to secrete a mix of inflammatory signals, growth factors, and other molecules that influence surrounding cells. This is useful and beneficial when it occurs in ...
Authors: Pennisi PA, Fernández MC, Martin A Abstract Pheochromocytomas/paragangliomas (PCCs/PGLs) are rare neuroendocrine tumors, developed from chromaffin cells derived from the neural crest. From a genetic point of view PCCs/PGLs are divided as sporadic cases, and inherited cases as part of hereditary (familial) syndromes. While the majority is benign, up to 26% of PCCs/PGLs will undergo malignant transformation. Validated prognostic pathological parameters for malignant PCCs/PGLs are still lacking. Signaling that follows the interactions between IGFs and their receptor/s in tumor cells received extensive ...
Authors: Silva MAFS, Dechichi P, Limirio PHJO Abstract Childhood obesity is a considerable worldwide health problem and a major risk factor for several chronic diseases. Fat rich diets result in altered serum levels of lipids, cytokines and hormonal factors, which influence skeletal acquisition and promote microstructural and mechanical behavior changes in bone, especially to bone quality and quantity. However, the possible longterm implications of high-fat diets in childhood are controversial. Despite not fully understood, multiple signaling pathways which support bone tissue homeostasis are altered under hyperlip...
Authors: Henry RK Abstract Glucose dysregulation (GD), a feature of growth hormone excess, in the setting of acromegaly is well known by clinicians. However, less well known is that GD may be a feature of growth hormone deficiency. The fact that either ends of the spectrum of growth hormone (excess or deficiency) can be associated with diabetes mellitus is unique and clinicians should especially recognize that impaired glucose tolerance and even diabetes mellitus may develop in individuals predisposed to having growth hormone deficiency. PMID: 32780951 [PubMed - in process]
Authors: Blumenfeld O, Hampe CS, Shulman L, Chen R, Laron Z Abstract Recent epidemiological surveys performed in Australia, USA and Israel demonstrate that Rotavirus vaccination correlates with an attenuated prevalence and/or incidence of early childhood diabetes (T1D). Other studies failed to confirm the above. PMID: 32780950 [PubMed - in process]
Publication date: Available online 12 August 2020Source: Current Therapeutic ResearchAuthor(s): D.D. Gladman, A.M. Orbai, J. Gomez-Reino, S. Chang-Douglass, E. Leoncini, H.E. Burton, K.S. Kanik, A.B. Romero, J.C. Cappelleri, M-A. Hsu
Publication date: October 2020Source: Biomedicine &Pharmacotherapy, Volume 130Author(s): Yafeng Wang, Delong Duo, Yingjun Yan, Rongyue He, Xinan Wu
Prof Sam Shuster (born on 24 August 1927, London) was a founding board member and then the President of the European Society for Dermatological Research (ESDR). He is a Fellow of the Royal College of Physicians, member of various dermatological and science associations, and an honorary member of many foreign academy societies. He is an emeritus professor of dermatology from the University of Newcastle Upon Tyne, United Kingdom.
ConclusionsNo difference between the LSTR and pulpectomy approaches could be confirmed by meta-analyses. The quality of evidence according to the GRADE scheme ranged from moderate to very low.Clinical relevanceThe present meta-analyses could not demonstrate the superiority of one treatment over the other.
Conclusions: There were significant differences with respect to clinical characteristics and comorbidity prevalence according to metformin use among Korean type 2 diabetes patients. Long-term follow-up of these patients is necessary to observe how this difference will affect clinical outcomes for these patients. PMID: 32774367 [PubMed]
Authors: Plunk EC, Richards SM Abstract The epigenome of an individual can be altered by endogenous hormones, environment, age, diet, and exposure to endocrine disrupting chemicals (EDCs), and the effects of these modifications can be seen across generations. Epigenetic modifications to the genome can alter the phenotype of the individual without altering the DNA sequence itself. Epigenetic modifications include DNA methylation, histone modification, and aberrant microRNA (miRNA) expression; they begin during germ cell development and embryogenesis and continue until death. Hormone modulation occurs during the agei...
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