Ways in Which the Failing Lymphatic System Contributes to Age-Related Disease

The lymphatic system is a parallel circulatory system responsible for moving fluid, immune cells, and a range of vital molecules around the body. It is of particular importance to immune function, allowing components of the immune system to carry messages from place to place in the body, and communicate and coordinate the immune response at the hubs known as lymph nodes. Like all tissues in the body, the lymphatic system is negatively impacted by aging, and this has widespread detrimental effects throughout the body and brain. For example, lymph nodes become disrupted in structure and function by the presence of senescent cells and consequent fibrosis as tissue maintenance runs awry in the face of the senescence-associated secretory phenotype. The consequences of this are well demonstrated in a recent paper: very old mice and primates suffering from immunosenescence, an immune system with a poor response to pathogens, cannot benefit from the addition of new, functional immune cells. Their lymph nodes are too structurally impacted to allow the new cells to coordinate an effective immune response. Given that fibrosis in a number of tissues has been reversed in animal models via use of senolytics to clear senescent cells and their inflammatory signaling, it is possible that lymph node aging might be reversed to some degree. If the structure cannot be regenerated, however, then there are efforts underway to produce artificial lymph nodes that can be transplanted to integra...
Source: Fight Aging! - Category: Research Authors: Tags: Medicine, Biotech, Research Source Type: blogs

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Publication date: Available online 23 January 2020Source: Journal of the American Society of CytopathologyAuthor(s): Haiyan Lu, Tarik M. Elsheikh, Yaxia ZhangBackfroundPolyoma virus cytopathic effect (BK-CPE) is classified as “Negative for high-grade urothelial carcinoma (NHGUC)” in the Paris System for Reporting Urinary Cytology (TPS). However, polyomaviruses have been historically associated with tumor development and recently reported as an independent risk factor for renourinary carcinoma in transplant patients. The aim of this study was to investigate the relationship between polyomavirus infection in the ...
Source: Journal of the American Society of Cytopathology - Category: Cytology Source Type: research
This study aimed to determine the effect of the consumption of peel flour or pulp flour from two varieties of Solanum tuberosum (Yungay potato and Canchán potato) on the accumulation of adipose tissue, organ weight, and oxidative stress in the liver of rats. We carried out an experimental study in 24 obese Holtzman rats, divided into four groups and subjected to diets containing 10% flour from both varieties of potato. The groups were T1: Yungay peel; T2: Yungay pulp; T3: Canchán peel; and T4: Canchán pulp. When the study was completed, all the animals were slaughtered to record the weights of organs a...
Source: Revista Peruana de Medicina de Experimental y Salud Publica - Category: International Medicine & Public Health Tags: Rev Peru Med Exp Salud Publica Source Type: research
Authors: Lancellotti P, De Pauw M, Claeys M Abstract Cardiovascular disease (CVD) and cancer represent the two main causes of death in industrialised countries. Both share common risk factors (diabetes, obesity, hypertension, diet, smoking, etc.). The associated timing of CVD and cancer onset is thus largely influenced by modifiable risk factors. Advances in cancer treatment have extended the lives of patients with cancer, but for some at the cost of adverse cardiovascular events. The rapidly growing number of patients surviving cancer, often in the setting of advanced age, new or pre-existing CV disease and risk f...
Source: Acta Cardiologica - Category: Cardiology Tags: Acta Cardiol Source Type: research
Authors: Acar RD, Acar Ş, Doğan C, Bayram Z, Karaduman A, Uysal S, Akbal ÖY, Hakgör A, Kaymaz C, Özdemir N Abstract INTRODUCTION: The aim of this study was to explore the relationship between the tricuspid annular plane systolic excursion/pulmonary arterial systolic pressure (TAPSE/PASP) ratio and model for end-stage liver disease (MELD) score in patients with advanced heart failure. METHODS: A total of 103 patients with advanced heart failure evaluated for candidacy for heart transplantation were included in this study. TAPSE was measured by M‑mode echocardiography and cardiac catheteri...
Source: Herz - Category: Cardiology Tags: Herz Source Type: research
CONCLUSION: In real-world patients at high risk of bleeding, implantation of the polymer-free metallic stent coated with Biolimus-A9 (Biofreedom®; Biosensors Europe, Morges, Switzerland) followed by 1 -month DAPT showed encouraging results without any stent thrombosis. PMID: 31965195 [PubMed - as supplied by publisher]
Source: Herz - Category: Cardiology Tags: Herz Source Type: research
AbstractThe aim of this study was to evaluate the photobiomodulation of red and green lights in the repair process of third-degree skin burns in rats through clinicopathological and immunohistochemical parameters. Sixty male Wistar rats were divided into three groups: control (CTRL) (n = 20), red LED (RED) (n = 20), and green LED (GREEN) (n = 20), with subgroups (n = 5) for each time of euthanasia (7, 14, 21, and 28 days). Daily applications in RED (λ630  ± 10 nm, 300 mW) and GREEN groups (λ520  ± ...
Source: Lasers in Medical Science - Category: Laser Surgery Source Type: research
Conclusion A great deal of progress is being made in the matter of treating aging: in advocacy, in funding, in the research and development. It can never be enough, and it can never be fast enough, given the enormous cost in suffering and lost lives. The longevity industry is really only just getting started in the grand scheme of things: it looks vast to those of us who followed the slow, halting progress in aging research that was the state of things a decade or two ago. But it is still tiny compared to the rest of the medical industry, and it remains the case that there is a great deal of work yet to be done at all...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Conclusion A great deal of progress is being made in the matter of treating aging: in advocacy, in funding, in the research and development. It can never be enough, and it can never be fast enough, given the enormous cost in suffering and lost lives. The longevity industry is really only just getting started in the grand scheme of things: it looks vast to those of us who followed the slow, halting progress in aging research that was the state of things a decade or two ago. But it is still tiny compared to the rest of the medical industry, and it remains the case that there is a great deal of work yet to be done at all...
Source: Fight Aging! - Category: Research Authors: Tags: Of Interest Source Type: blogs
This study shows that CA are released from periventricular and subpial regions to the cerebrospinal fluid and are present in the cervical lymph nodes, into which cerebrospinal fluid drains through the meningeal lymphatic system. We also show that CA can be phagocytosed by macrophages. We conclude that CA can act as containers that remove waste products from the brain and may be involved in a mechanism that cleans the brain. Moreover, we postulate that CA may contribute in some autoimmune brain diseases, exporting brain substances that interact with the immune system, and hypothesize that CA may contain brain markers that m...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
This study indicates that frailty and other age-related diseases could be prevented and significantly reduced in older adults. Getting our heart risk factors under control could lead to much healthier old ages. Unfortunately, the current obesity epidemic is moving the older population in the wrong direction, however our study underlines how even small reductions in risk are worthwhile." The study analysed data from more than 421,000 people aged 60-69 in both GP medical records and in the UK Biobank research study. Participants were followed up over ten years. The researchers analysed six factors that could impa...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
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