Cellular Senescence in Neurodegenerative Conditions
This open access review paper covers the high points of what is presently known of the contribution of senescent cells to neurodegenerative conditions. Somatic cells become senescent throughout life, largely as they reach the Hayflick limit to replication, but also due to damage or a toxic local environment. Senescent cells halt replication and begin to secrete pro-inflammatory signals to attract the immune system. In youth, senescent cells are rapidly cleared by programmed cell death or by immune cells. With age, the immune system becomes less efficient. As a consequence senescent cells begin to accumulate, and they help ...
Source: Fight Aging! - April 30, 2024 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
Fight Aging! Newsletter, April 29th 2024
In conclusion, we assigned stemness scores to human samples and show evidence of a pan-tissue loss of stemness during human aging, which adds weight to the idea that stem cell deterioration may contribute to human aging.
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The Role of Immune Aging in Neurodegenerative Conditions
https://www.fightaging.org/archives/2024/04/the-role-of-immune-aging-in-neurodegenerative-conditions/
The research community has come to see chronic inflammation and other age-related immune system dysfunctions as an important aspect of neurodegenerative conditions. Inflammation in the short term is n...
Source: Fight Aging! - April 28, 2024 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
The Role of Immune Aging in Neurodegenerative Conditions
The research community has come to see chronic inflammation and other age-related immune system dysfunctions as an important aspect of neurodegenerative conditions. Inflammation in the short term is necessary for defense against pathogens and regeneration following injury. Unresolved, constant inflammation is harmful to tissue structure and function, however, changing cell behavior for the worse. In brain tissue, the effects of inflammatory signaling on the behavior of innate immune cells called microglia appears particularly important. Neurogenerative conditions are characterized by activated microglia. These microglia ar...
Source: Fight Aging! - April 23, 2024 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Fight Aging! Newsletter, April 22nd 2024
This study reveals a potential treatment for human mitochondrial diseases.
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A Population Study Correlates Air Pollution with Faster Cognitive Aging
https://www.fightaging.org/archives/2024/04/a-population-study-correlates-air-pollution-with-faster-cognitive-aging/
A number of large epidemiological studies provide evidence for long-term exposure to greater levels of air pollution to accelerate the onset and progression of age-related disease. A few of these manage to control for the tendency for wealthier people to avoid living in areas with higher particulate air pollution, ...
Source: Fight Aging! - April 21, 2024 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Parkinson's Disease in the SENS View of Damage Repair
The Strategies for Engineered Negligible Senescence (SENS) is a view of aging as accumulated damage. Drawing from the extensive scientific literature on aging, the originators of SENS created an outline of the forms of cell and tissue damage that are fundamental causes of aging, in that they occur as a natural side-effect of the normal operation of our cellular biochemistry. So we might consider the loss of vital cells due to declining stem cell function, mutations to nuclear DNA and mitochondrial DNA, cross-linking of vital molecules in the extracellular matrix, accumulated metabolic waste in long-lived cells, generation ...
Source: Fight Aging! - April 19, 2024 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
The Vitamin Deficiency Linked to Moodiness, Lack Of Motivation And Tiredness
The vitamin may have a direct effect on the brain and has also been linked to Parkinson's disease and dementia. (Source: PsyBlog | Psychology Blog)
Source: PsyBlog | Psychology Blog - April 18, 2024 Category: Psychiatry & Psychology Authors: Jeremy Dean Tags: Mental Health Nutrition Source Type: blogs
Fight Aging! Newsletter, April 15th 2024
In conclusion, although several clinical trials targeting SnCs are ongoing, various questions about the biology of SnCs remain open, resulting in a gap between molecular and cellular data. Concerning the need, initiatives such as SenNet aiming to create openly accessible atlases of SnCs should contribute enormously to the area. Advances in understanding the subcellular structure, the heterogeneity, and the dynamics of SnCs require the integration of molecular and cellular techniques with data analysis packages to evaluate high throughput evidence from microscopy and flow cytometry. It is also necessary to develop new equip...
Source: Fight Aging! - April 14, 2024 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Enabling Microglia to Better Clear Amyloid by Interfering in the LILRB4-APOE Interaction
Researchers here describe a mechanism that reduces the ability of microglia to ingest and clear misfolded amyloid-β, the protein aggregates associated with Alzheimer's disease. Interestingly, this involves APOE, and thus might be affected by the different APOE variants connected to Alzheimer's disease risk. The researchers demonstrate that interfering in the interaction between APOE and the LILRB4 receptor present on microglia can restore microglia-mediated clearance of amyloid-β.
Toxic clumps of brain proteins are features of many neurodegenerative conditions, including Alzheimer's disease (AD), Parkinson's dis...
Source: Fight Aging! - April 11, 2024 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
Fight Aging! Newsletter, April 8th 2024
In this study, we tested a stem cell secretome product, which contains extracellular vesicles and growth factors, cytoskeletal remodeling factors, and immunomodulatory factors. We examined the effects of 4 weeks of 2×/week unilateral intramuscular secretome injections (quadriceps) in ambulatory aged male C57BL/6 mice (22-24 months) compared to saline-injected aged-matched controls.
Secretome delivery substantially increased whole-body lean mass and decreased fat mass, corresponding to higher myofiber cross-sectional area and smaller adipocyte size, respectively. Secretome-treated mice also had greater whole-bod...
Source: Fight Aging! - April 7, 2024 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Skin Biopsy as an Approach to Diagnose Parkinson's Disease
Researchers here demonstrate that the presence of phosphorylated α-synuclein in a skin biopsy is a good indicator of the presence of Parkinson's disease and other synucleinopathies. A skin biopsy is a more invasive procedure than most people want to undergo, but a greater ability to diagnose progressive diseases in their early stages will nonetheless tend to encourage the development of a greater ability to manage, treat, and avoid the later stages.
Affecting an estimated 2.5 million people in the United States, the synucleinopathies include Parkinson's disease (PD), dementia with Lewy bodies (DLB), multiple syst...
Source: Fight Aging! - April 5, 2024 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
Remarkably Simple Treatment Reverses Brain Damage In Parkinson ’ s (M)
Parkinson’s is characterised by problems with cognition and movement — often a slow shaking of the hand, arm, foot or leg. (Source: PsyBlog | Psychology Blog)
Source: PsyBlog | Psychology Blog - April 4, 2024 Category: Psychiatry & Psychology Authors: Jeremy Dean Tags: Parkinson's subscribers-only Source Type: blogs
Lewy Body Disease May Be More Common than Thought
Access to human brain tissue for medical research is more limited than most people realize is the case, and, for obvious reasons, far too little of the available tissue data covers the early stages of disease. This limitation is one of the factors slowing the pace of research into age-related neurodegenerative conditions. Here, for example, researchers make use of an unusual resource to show that the prevalence of Lewy body disease may be greater than presently thought, with pathology beginning in the 50s, even if there are no outright symptoms of disease at that stage.
Lewy body disease is the second most common ...
Source: Fight Aging! - April 2, 2024 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
The Long and Tortured History of Alpha-Synuclein and Parkinson ’s Disease
This study tracks the decades-long journey to harness alpha-synuclein as a treatment for Parkinson’s disease. Steven Zecola an activist who tracks Parkinson’s research and was on THCB last month discussing it, offers three key changes needed to overcome the underlying challenges.
A Quick Start for Alpha-Synuclein R&D
In the mid-1990’s, Parkinson’s patient advocacy groups had become impatient by the absence of any major therapeutic advances in the 25 years since L-dopa had been approved for Parkinson’s disease (PD).
The Director of National Institute of Neurological Disorders and Stroke (NINDS) se...
Source: The Health Care Blog - March 29, 2024 Category: Consumer Health News Authors: matthew holt Tags: Health Policy Medical Practice Parkinson's Disease Steven Zecola Source Type: blogs
Finding peace in the face of loss: a father ’ s journey with hospice
How do you make sense of someone dying? The only way I know is to put it into some context so that, if possible, some good can come of it. Some of you may have known about my dad’s Parkinson’s disease. He’s had a fairly rapid decline over the past four months, and now he’s
Read more…
Finding peace in the face of loss: a father’s journey with hospice originally appeared in KevinMD.com. (Source: Kevin, M.D. - Medical Weblog)
Source: Kevin, M.D. - Medical Weblog - March 28, 2024 Category: General Medicine Authors: Kimberly Chapman, MD Tags: Physician Palliative Care Source Type: blogs
Fight Aging! Newsletter, March 11th 2024
In conclusion, this Mendelian randomization study found that Streptococcus was causally associated with Bioage acceleration. Further randomized controlled trials are needed to investigate its role in the aging process.
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Considering the Mechanisms of Vascular Calcification
https://www.fightaging.org/archives/2024/03/considering-the-mechanisms-of-vascular-calcification/
Harmful calcification of structures in the cardiovascular system proceeds alongside the development of the fatty lesions of atherosclerosis. Both disease processes are accelerated by chronic inflammation, but d...
Source: Fight Aging! - March 10, 2024 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
