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Un Yung Choi, Youn Jung Choi, Shin-Ae Lee, Ji-Seung Yoo
In the context of aging, the susceptibility to infectious diseases increases, leading to heightened morbidity and mortality. This phenomenon, termed immunosenescence, is characterized by dysregulation in the aging immune system, including abnormal alterations in lymphocyte composition, elevated basal inflammation, and the accumulation of senescent T cells. Such changes contribute to increased autoimmune diseases, enhanced infection severity, and reduced responsiveness to vaccines. Utilizing aging animal models becomes imperative for a comprehensive understanding of immunosenescence, given the complexity of aging as a physiological process in living organisms...
April 17, 2024: BMB Reports
#22
JOURNAL ARTICLE
Xiaorui Chen, Yang Luo, Qing Zhu, Jingzi Zhang, Huan Huang, Yansheng Kan, Dian Li, Ming Xu, Shuohan Liu, Jianxiao Li, Jinmeng Pan, Li Zhang, Yan Guo, Binghao Wang, Guantong Qi, Zhen Zhou, Chen-Yu Zhang, Lei Fang, Yanbo Wang, Xi Chen
Recent investigations into heterochronic parabiosis have unveiled robust rejuvenating effects of young blood on aged tissues. However, the specific rejuvenating mechanisms remain incompletely elucidated. Here we demonstrate that small extracellular vesicles (sEVs) from the plasma of young mice counteract pre-existing aging at molecular, mitochondrial, cellular and physiological levels. Intravenous injection of young sEVs into aged mice extends their lifespan, mitigates senescent phenotypes and ameliorates age-associated functional declines in multiple tissues...
April 16, 2024: Nature aging
#23
REVIEW
Yue Li, Ruishuang Ma, Xia Hao
Phosphatase and tensin homolog deleted on chromosome 10 (PTEN) represents the initial tumor suppressor gene identified to possess phosphatase activity, governing various cellular processes including cell cycle regulation, migration, metabolic pathways, autophagy, oxidative stress response, and cellular senescence. Current evidence suggests that PTEN is critical for stem cell maintenance, self-renewal, migration, lineage commitment, and differentiation. Based on the latest available evidence, we provide a comprehensive overview of the mechanisms by which PTEN regulates activities of different stem cell populations and influences neurological disorders, encompassing autism, stroke, spinal cord injury, traumatic brain injury, Alzheimer's disease and Parkinson's disease...
April 16, 2024: Cell Death & Disease
#24
JOURNAL ARTICLE
Kamal Ranjbar, Alireza Komaki, Bayan Fayazi, Ebrahim Zarrinkalam
RATIONAL: Patients experience post-stroke cognitive impairment during aging. To date, no specific treatment solution has been reported for this disorder. OBJECTIVE: The purpose of this study was to evaluate the effects of exercise training and coenzyme Q10 supplementation on middle cerebral artery occlusion (MCAO) induced behavioral impairment, long-term potentiation inhibition and cerebral infarction size in aging rats. METHODS: Fifty aging male rats underwent MCAO surgery and were randomly distributed in to the following groups: 1-Sham, 2- control, 3- Coenzyme Q10, 4- Exercise training and 5- Exercise training with Q10 supplementation (Ex + Q10)...
April 17, 2024: Psychopharmacology
#25
REVIEW
Qiuqiu Xia, Yan Zhao, Huaize Dong, Qiming Mao, Lu Zhu, Jiyue Xia, Zijing Weng, Wenbo Liao, Zongyue Hu, Jiangbi Yi, Shuai Feng, Youhong Jiang, Zhijun Xin
Degenerative intervertebral disc disease (IVDD) is one of the main spinal surgery, conditions, which markedly increases the incidence of low back pain and deteriorates the patient's quality of life, and it imposes significant social and economic burdens. The molecular pathology of IVDD is highly complex and multilateral however still not ompletely understood. New findings indicate that IVDD is closely associated with inflammation, oxidative stress, cell injury and extracellular matrix metabolismdysregulation...
April 15, 2024: Biomedicine & Pharmacotherapy
#26
JOURNAL ARTICLE
Weiwei Zhu, Chunting Tan, Jie Zhang
Idiopathic pulmonary fibrosis (IPF) is a progressive and chronic disease that significantly impacts patient quality of life, and its incidence is on the rise. The pathogenesis of IPF remains poorly understood. Alveolar type 2 (AT2) cells are crucial in the onset and progression of IPF, yet the specific mechanisms involved are not well defined. Lon protease 1 (LONP1), known for its critical roles in various diseases, has an unclear function in IPF. Our research investigated the impact of Lonp1 gene deletion on AT2 cell functionality and its subsequent effect on IPF development...
April 15, 2024: Biomol Biomed
#27
JOURNAL ARTICLE
Jonathan Stockman
Aging is often associated with chronic inflammation and declining health. Both veterinarians and owners of aging dogs and cats are interested in nutritional solutions and strategies to prevent signs of age-related disease, increase longevity, and improve quality of life. Physiological decreases in muscle mass, decreased immunity, and a decrease in sense acuity are some of the changes often seen in otherwise healthy senior pets; however, there may also be an increase in risk for pathologies such as renal, cardiovascular, musculoskeletal, and neoplastic diseases...
2024: Advances in Experimental Medicine and Biology
#28
REVIEW
Qinglan He, Peijun Li, Lihua Han, Chen Yang, Meiling Jiang, Yingqi Wang, Xiaoyu Han, Yuanyuan Cao, Xiaodan Liu, Weibing Wu
Chronic exposure to environmental hazards causes airway epithelial dysfunction, primarily impaired physical barriers, immune dysfunction, and repair or regeneration. Impairment of airway epithelial function subsequently leads to exaggerated airway inflammation and remodeling, the main features of chronic obstructive pulmonary disease (COPD). Mitochondrial damage has been identified as one of the mechanisms of airway abnormalities in COPD, which is closely related to airway inflammation and airflow limitation...
April 16, 2024: American Journal of Physiology. Lung Cellular and Molecular Physiology
#29
JOURNAL ARTICLE
Sarah A Thomas, Hwan Mee Yong, Ana M Rule, Naina Gour, Stephane Lajoie
Urban particulate matter (PM; uPM) poses significant health risks, particularly to the respiratory system. Fine particles, such as PM2.5, can penetrate deep into the lungs and exacerbate a range of health problems, including emphysema, asthma, and lung cancer. PM exposure is also linked to extrapulmonary disorders such as heart and neurodegenerative diseases. Moreover, prolonged exposure to elevated PM levels can reduce overall life expectancy. Senescence is a dysfunctional cell state typically associated with age but can also be precipitated by environmental stressors...
April 1, 2024: ImmunoHorizons
#30
JOURNAL ARTICLE
Lulu Yu, Vladimir Majerciak, Alexei Lobanov, Sameer Mirza, Vimla Band, Haibin Liu, Maggie Cam, Stephen H Hughes, Douglas R Lowy, Zhi-Ming Zheng
UNLABELLED: The integration of HPV DNA into human chromosomes plays a pivotal role in the onset of papillomavirus-related cancers. HPV DNA integration often occurs by linearizing the viral DNA in the E1/E2 region, resulting in the loss of a critical viral early polyadenylation signal (PAS), which is essential for the polyadenylation of the E6E7 bicistronic transcripts and for the expression of the viral E6 and E7 oncogenes. Here, we provide compelling evidence that, despite the presence of numerous integrated viral DNA copies, virus-host fusion transcripts originate from only a single integrated HPV DNA in HPV16 and HPV18 cervical cancers and cervical cancer-derived cell lines...
April 16, 2024: MBio
#31
JOURNAL ARTICLE
Bo-Xin Zheng, Wei Long, Wende Zheng, Yaoxun Zeng, Xiao-Chun Guo, Ka-Hin Chan, Meng-Ting She, Alan Siu-Lun Leung, Yu-Jing Lu, Wing-Leung Wong
Mitochondria are important drug targets for anticancer and other disease therapies. Certain human mitochondrial DNA sequences capable of forming G-quadruplex structures (G4s) are emerging drug targets of small molecules. Despite some mitochondria-selective ligands being reported for drug delivery against cancers, the ligand design is mostly limited to the triphenylphosphonium scaffold. The ligand designed with lipophilic small-sized scaffolds bearing multipositive charges targeting the unique feature of high mitochondrial membrane potential (MMP) is lacking and most mitochondria-selective ligands are not G4-targeting...
April 16, 2024: Journal of Medicinal Chemistry
#32
JOURNAL ARTICLE
Liuqing Wu, Kaiqi Wang, Mengyi Chen, Wenxin Su, Zheng Liu, Xiaoying Guo, Mengqian Ma, Shuangjie Qian, Yuqi Deng, Haihan Wang, Chanjuan Mao, Zaibao Zhang, Xiaofeng Xu
UNLABELLED: Flowers are crucial for the reproduction of flowering plants and their senescence has drastic effects on plant-animal interactions as well as pollination. Petal senescence is the final phase of flower development which is regulated by hormones and genes. Among these, jasmonic acid (JA) has emerged as a major contributor to petal senescence, but its molecular mechanisms remain elusive. Here, the role of JA in petal senescence in Arabidopsis was investigated. We showed that petal senescence in aos mutant was significantly delayed, which also affected petal cell size and proliferation...
February 2024: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
#33
JOURNAL ARTICLE
(no author information available yet)
No abstract text is available yet for this article.
April 15, 2024: Nature aging
#34
REVIEW
Ruochen Wu, Fei Sun, Weiqi Zhang, Jie Ren, Guang-Hui Liu
Aging is a major risk factor for numerous chronic diseases. Vaccination offers a promising strategy to combat these age-related diseases by targeting specific antigens and inducing immune responses. Here, we provide a comprehensive overview of recent advances in vaccine-based interventions targeting these diseases, including Alzheimer's disease, type II diabetes, hypertension, abdominal aortic aneurysm, atherosclerosis, osteoarthritis, fibrosis and cancer, summarizing current approaches for identifying disease-associated antigens and inducing immune responses against these targets...
April 15, 2024: Nature aging
#35
JOURNAL ARTICLE
Gregory A Shilovsky
The article describes the history of studies of survival data carried out at the Research Institute of Physico-Chemical Biology under the leadership of Academician V. P. Skulachev from 1970s until present, with special emphasis on the last decade. The use of accelerated failure time (AFT) model and analysis of coefficient of variation of lifespan (CVLS ) in addition to the Gompertz methods of analysis, allows to assess survival curves for the presence of temporal scaling (i.e., manifestation of accelerated aging), without changing the shape of survival curve with the same coefficient of variation...
February 2024: Biochemistry. Biokhimii︠a︡
#36
REVIEW
Svyatoslav S Sokolov, Fedor F Severin
For most of their lifespan, the probability of death for many animal species increases with age. Gompertz law states that this increase is exponential. In this work, we have compared previously published data on the survival kinetics of different lines of progeric mice. Visual analysis showed that in six lines of these rapidly aging mutants, the probability of death did not strictly depend on age. In contrast, ten lines of progeric mice have survival curves similar to those of the control animals, that is, in agreement with Gompertz law, similar to the shape of an exponential curve upside down...
February 2024: Biochemistry. Biokhimii︠a︡
#37
JOURNAL ARTICLE
Natalia A Muraleva, Anna A Zhdankina, Anzhella Zh Fursova, Nataliya G Kolosova
Visomitin eye drops are the first and, so far, the only drug based on SkQ1 - the mitochondria-targeted antioxidant 10-(6'-plastoquinonyl) decyltriphenylphosphonium, developed in the laboratories of Moscow State University under the leadership of Academician V. P. Skulachev. SkQ1 is considered as a potential tool to combat the aging program. We have previously shown that it is able to prevent and/or suppress development of all manifestations of accelerated senescence in OXYS rats, including retinopathy, similar to the age-related macular degeneration (AMD)...
February 2024: Biochemistry. Biokhimii︠a︡
#38
JOURNAL ARTICLE
Andrew G Baker, Muhamad Hartono, Hui-Ling Ou, Andrea Bistrović Popov, Emma L Brown, James Joseph, Monika Golinska, Estela González-Gualda, David Marcias, Jianfeng Ge, Mary Denholm, Samir Morsli, Chandan Sanghera, Thomas R Else, Heather F Greer, Aude Vernet, Sarah E Bohndiek, Ljiljana Fruk, Daniel Muñoz-Espín
There is an urgent need to improve conventional cancer-treatments by preventing detrimental side effects, cancer recurrence and metastases. Recent studies have shown that presence of senescent cells in tissues treated with chemo- or radiotherapy can be used to predict the effectiveness of cancer treatment. However, although the accumulation of senescent cells is one of the hallmarks of cancer, surprisingly little progress has been made in development of strategies for their detection in vivo. To address a lack of detection tools, we developed a biocompatible, injectable organic nanoprobe (NanoJagg), which is selectively taken up by senescent cells and accumulates in the lysosomes...
April 15, 2024: Angewandte Chemie
#39
JOURNAL ARTICLE
Hu Zhang, Yong-Chang Diwu, En-Long Zhao, Li-Qi Duan, Xin-Yue Han, Deng-Kun Wang, Qi Liu, Yuan Zhou
This study aims to investigate the effect of Xixin Decoction on the T helper 17 cell(Th17)/regulatory T cell(Treg) ba-lance of intestinal mucosa and the expression of related transcription factors in the senescence-accelerated mouse-prone 8(SAMP8) model. Fifty 14-week male mice of SAMP8 were randomized by the random number table method into model group, probiotics group, and high-, medium-, and low-dose Xixin Decoction groups, with 10 mice in each group. Ten 14-week male mice of senescence-acce-lerated mouse-resistant 1(SAMR1) served as control group...
March 2024: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
#40
JOURNAL ARTICLE
Jinxia Liu, Jane MacNaughtan, Annarein J C Kerbert, Theo Portlock, Javier Martínez Gonzalez, Yi Jin, Frederick Clasen, Abeba Habtesion, Huoyan Ji, Qin Jin, Alexandra Phillips, Francesco De Chiara, Ganesh Ingavle, Cesar Jimenez, Giacomo Zaccherini, Katherine Husi, Miguel Angel Rodriguez Gandia, Paul Cordero, Junpei Soeda, Lynda McConaghy, Jude Oben, Karen Church, Jia V Li, Haifeng Wu, Aarti Jalan, Pere Gines, Elsa Solà, Simon Eaton, Carrie Morgan, Michal Kowalski, Daniel Green, Amir Gander, Lindsey A Edwards, I Jane Cox, Helena Cortez-Pinto, Thomas Avery, Reiner Wiest, Francois Durand, Paolo Caraceni, Roberto Elosua, Joan Vila, Marco Pavesi, Vicente Arroyo, Nathan Davies, Rajeshwar P Mookerjee, Victor Vargas, Susan Sandeman, Gautam Mehta, Saeed Shoaie, Julian Marchesi, Agustín Albillos, Fausto Andreola, Rajiv Jalan
OBJECTIVE: Targeting bacterial translocation in cirrhosis is limited to antibiotics with risk of antimicrobial resistance. This study explored the therapeutic potential of a non-absorbable, gut-restricted, engineered carbon bead adsorbent, Yaq-001 in models of cirrhosis and acute-on-chronic liver failure (ACLF) and, its safety and tolerability in a clinical trial in cirrhosis. DESIGN: Performance of Yaq-001 was evaluated in vitro . Two-rat models of cirrhosis and ACLF, (4 weeks, bile duct ligation with or without lipopolysaccharide), receiving Yaq-001 for 2 weeks; and two-mouse models of cirrhosis (6-week and 12-week carbon tetrachloride (CCl4)) receiving Yaq-001 for 6 weeks were studied...
April 15, 2024: Gut
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