Fractone aging in the subventricular zone of the lateral ventricle

Publication date: Available online 14 June 2015 Source:Journal of Chemical Neuroanatomy Author(s): Aurelien Kerever , Taihei Yamada , Yuji Suzuki , Frederic Mercier , Eri Arikawa-Hirasawa In adulthood, the subventricular zone (SVZ) is one of the restricted places where neurogenesis persists. In this neurogenic niche, specialized extracellular matrix (ECM) structures termed fractones contact neural stem cells and their immediate progeny. Fractones are composed of ubiquitous ECM components including heparan sulfate proteoglycans such as perlecan and agrin. We have previously shown that fractones can capture growth factors and promote growth factor activity through a heparin binding mechanism in order to regulate neurogenesis. With aging, neurogenesis is known to decrease. However, the effect of aging on fractones structure and composition remains unknown. Here, we report that, while fractone number decreased, fractone size dramatically increased with aging. Despite the changes in fractones morphology, niche cells expressing glial fibrillary acidic protein kept direct contact with fractones. Furthermore, we have observed that heparan sulfate chains contained in fractones were modified with aging. However, FGF-2 was still captured by fractones via heparan sulfates. Together, our results suggest that the changes observed in fractones structure and composition are critically related to aging of the SVZ neurogenic niche.
Source: Journal of Chemical Neuroanatomy - Category: Neuroscience Source Type: research

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Conclusions: Overall, we propose that the four hub genes may be potential targets in trastuzumab-resistant gastric cancer and that ISGs may play a key role in promoting trastuzumab resistance in GC. PMID: 31949544 [PubMed - in process]
Source: Disease Markers - Category: Laboratory Medicine Tags: Dis Markers Source Type: research
This study provides strong evidence that following a healthy lifestyle can substantially extend the years a person lives disease-free." Commentary on Recent Evidence for Cognitive Decline to Precede Amyloid Aggregation in Alzheimer's Disease https://www.fightaging.org/archives/2020/01/commentary-on-recent-evidence-for-cognitive-decline-to-precede-amyloid-aggregation-in-alzheimers-disease/ I can't say that I think the data presented in the research noted here merits quite the degree of the attention that it has been given in the popular science press. It is interesting, but not compelling if its role...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Conclusions: The data show the microbial metabolome could have an impact on patients with GVHD vs. no GVHD. A better understanding of the role of the oral and gut microbiome in GVHD can give directions to move towards the development of innovative approaches for preventing GVHD following allo-HCT, reducing also antibiotic therapy. PMID: 31951695 [PubMed - in process]
Source: Central European Journal of Public Health - Category: International Medicine & Public Health Tags: Cent Eur J Public Health Source Type: research
Authors: Deniz AAH, Abdik EA, Abdik H, Aydın S, Şahin F, Taşlı PN Abstract Maintaining integrity of the skin and its appendages still preserves its top-ranking in priorities of survival for the modern human as it probably once did for the ancient individual, -not only- because it is the primary barrier to external assaults, but also because of social and psychological impact of healthy skin during their life-span. Healing wounds in order to shield off the internal organs from infections and damage, restoring its ability to adapt to various environmental stimuli, and slowing-down and reversing aging of the skin ...
Source: Advances in Experimental Medicine and Biology - Category: Research Tags: Adv Exp Med Biol Source Type: research
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Source: Expert Review of Hematology - Category: Hematology Tags: Expert Rev Hematol Source Type: research
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Source: GEO: Gene Expression Omnibus - Category: Genetics & Stem Cells Tags: Expression profiling by high throughput sequencing Homo sapiens Source Type: research
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Source: GEO: Gene Expression Omnibus - Category: Genetics & Stem Cells Tags: Expression profiling by array Homo sapiens Source Type: research
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Source: Stem Cell Research - Category: Stem Cells Source Type: research
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Source: Stem Cell Research - Category: Stem Cells Source Type: research
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Source: Stem Cell Research - Category: Stem Cells Source Type: research
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