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Aging and Disease

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https://www.readbyqxmd.com/read/28400989/serum-leptin-concentration-is-associated-with-incident-frailty-in-older-adults
#1
Alberto Lana, Ana Valdés-Bécares, Antonio Buño, Fernando Rodríguez-Artalejo, Esther Lopez-Garcia
Obesity has been associated with higher risk of frailty in older adults, but the pathophysiological mechanisms are unclear. No previous study has examined the association between leptin, an adipokine, and the risk of frailty in older adults, and whether this association could be explained by insulin resistance or chronic inflammation. Data were taken from 1,573 individuals without diabetes mellitus, aged ≥60 years, from the Seniors-ENRICA cohort. In 2008-2010, leptin, the homeostasis model assessment of insulin resistance (HOMA-IR) and C-reactive protein (CRP) were measured...
April 2017: Aging and Disease
https://www.readbyqxmd.com/read/28400988/the-%C3%AE-133p53-isoform-reduces-wtp53-induced-stimulation-of-dna-pol-%C3%AE-activity-in-the-presence-and-absence-of-d4t
#2
Kai Liu, Yunjin Zang, Xianghua Guo, Feili Wei, Jiming Yin, Lijun Pang, Dexi Chen
The mitochondrial toxicity of nucleoside reverse transcriptase inhibitors (NRTIs) is due to the inhibition of mitochondrial DNA (mtDNA) polymerase γ (pol γ). Previous studies have shown that wild type p53 (wtp53) can interact with pol γ and mtDNA to enhance mitochondrial DNA base excision repair (mtBER) activity and increase the accuracy of DNA synthesis. The N-terminal transactivation domain and central specific DNA-binding domain of p53 play critical roles in the stimulation of BER. In this study, we identified the possible roles of wtp53, Δ40p53 and Δ133p53 in regulating mtDNA pol γ activity in cells with d4T treatment...
April 2017: Aging and Disease
https://www.readbyqxmd.com/read/28400987/serum-hepcidin-levels-iron-dyshomeostasis-and-cognitive-loss-in-alzheimer-s-disease
#3
Zohara Sternberg, Zihua Hu, Daniel Sternberg, Shayan Waseh, Joseph F Quinn, Katharine Wild, Kaye Jeffrey, Lin Zhao, Michael Garrick
This pilot study examined the status of the master iron regulatory peptide, hepcidin, and peripheral related iron parameters in Alzheimer's disease (AD) and mild cognitive impairment patients, and evaluated the relationship between iron dyshomeostasis and amyloid-beta (Aβ), cognitive assessment tests, neuroimaging and clinical data. Frozen serum samples from the Oregon Tissue Bank were used to measure serum levels of hepcidin, ferritin, Aβ40, Aβ42 using enzyme-linked immunosorbent assay. Serum transferrin levels were determined indirectly as total iron binding capacity, serum iron was measured and the percent saturation of transferrin calculated...
April 2017: Aging and Disease
https://www.readbyqxmd.com/read/28400986/combining-injectable-plasma-scaffold-with-mesenchymal-stem-stromal-cells-for-repairing-infarct-cavity-after-ischemic-stroke
#4
Hongxia Zhang, Fen Sun, Jixian Wang, Luokun Xie, Chenqi Yang, Mengxiong Pan, Bei Shao, Guo-Yuan Yang, Shao-Hua Yang, Qichuan ZhuGe, Kunlin Jin
Stroke survivors are typically left with structural brain damage and associated functional impairment in the chronic phase of injury, for which few therapeutic options exist. We reported previously that transplantation of human embryonic stem cell (hESC)-derived neural stem cells together with Matrigel scaffolding into the brains of rats after focal ischemia reduced infarct volume and improved neurobehavioral performance. Matrigel is a gelatinous protein mixture extracted from mouse sarcoma cells, thus would not be approved for use as a scaffold clinically...
April 2017: Aging and Disease
https://www.readbyqxmd.com/read/28400985/spanning-from-the-west-to-east-an-updated-review-on-endovascular-treatment-of-intracranial-atherosclerotic-disease
#5
REVIEW
Mohammed Hussain, Neil Datta, Zhe Cheng, David Dornbos, Asif Bashir, Ibrahim Sultan, Tapan Mehta, Faris Shweikeh, Paul Mazaris, Nora Lee, Amre Nouh, Xiaokun Geng, Yuchuan Ding
Ischemic stroke is a major cause of morbidity and mortality, incurring significant cost. Intracranial atherosclerotic disease (ICAD) accounts for 10-15% of ischemic stroke in Western societies, but is an underlying pathology in up to 54% of ischemic strokes in Asian populations. ICAD has largely been treated with medical management, although a few studies have examined outcomes following endovascular treatment. Our objective was to summarize the major trials that have been performed thus far in regard to the endovascular treatment of ICAD and to provide direction for future management of this disease process...
April 2017: Aging and Disease
https://www.readbyqxmd.com/read/28400984/is-technology-present-in-frailty-technology-a-back-up-tool-for-dealing-with-frailty-in-the-elderly-a-systematic-review
#6
REVIEW
Iranzu Mugueta-Aguinaga, Begonya Garcia-Zapirain
This study analyzes the technologies used in dealing with frailty within the following areas: prevention, care, diagnosis and treatment. The aim of this paper is, on the one hand, to analyze the extent to which technology is present in terms of its relationship with frailty and what technological resources are used to treat it. Its other purpose is to define new challenges and contributions made by physiotherapy using technology. Eighty documents related to research, validation and/or the ascertaining of different types of hardware, software or both were reviewed in prominent areas...
April 2017: Aging and Disease
https://www.readbyqxmd.com/read/28400983/allergy-and-aging-an-old-new-emerging-health-issue
#7
REVIEW
Massimo De Martinis, Maria Maddalena Sirufo, Lia Ginaldi
Allergy reactions are the most common immunological diseases and represent one of the most widespread and fast growing chronic human health problems among people over 15 years of age in developed countries. As populations get older worldwide, allergy manifestations in aged persons will occur more often in the future. To date, there has been much more studies on allergies in children than in adults. As the population ages, clinicians must be prepared to meet all the elderly's health care needs, including these new and emerging health issue...
April 2017: Aging and Disease
https://www.readbyqxmd.com/read/28400982/shining-the-light-on-senescence-associated-lncrnas
#8
REVIEW
A R Ghanam, Qianlan Xu, Shengwei Ke, Muhammad Azhar, Qingyu Cheng, Xiaoyuan Song
Cellular senescence can be described as a complex stress response that leads to irreversible cell cycle arrest. This process was originally described as an event that primary cells go through after many passages of cells during cell culture. More recently, cellular senescence is viewed as a programmed process by which the cell displays a senescence phenotype when exposed to a variety of stresses. Cellular senescence has been implicated in tumor suppression and aging such that senescence may contribute to both tumor progression and normal tissue repair...
April 2017: Aging and Disease
https://www.readbyqxmd.com/read/28400981/new-developments-in-the-pathophysiology-workup-and-diagnosis-of-dural-venous-sinus-thrombosis-dvst-and-a-systematic-review-of-endovascular-treatments
#9
REVIEW
Sanjay Konakondla, Clemens M Schirmer, Fengwu Li, Xiaogun Geng, Yuchuan Ding
Dural venous sinus thrombosis (DVST) is a rare cause of stroke, which typically affects young women. The importance of identifying pre-disposing factors that lead to venous stasis lies in the foundation of understanding the etiology, pathophysiology and clinical presentation. The precise therapeutic role of interventional therapies is not fully understood though the current data do suggest potential applications. The aim of the study was to perform a systematic review and meta-analysis to evaluate the utility of and short-term 30-day survival after endovascular therapy for patients with DVST...
April 2017: Aging and Disease
https://www.readbyqxmd.com/read/28400980/association-between-coagulation-function-and-cerebral-microbleeds-in-ischemic-stroke-patients-with-atrial-fibrillation-and-or-rheumatic-heart-disease
#10
Junfeng Liu, Deren Wang, Yao Xiong, Bian Liu, Jing Lin, Shihong Zhang, Bo Wu, Chenchen Wei, Ming Liu
Cerebral microbleeds (CMBs), which indicate hemorrhage-prone disease, may associate with hemostatic abnormalities, but the association between CMBs and coagulation function is uncertain. We aimed to examine this possible association. The following coagulation function indicators were evaluated in 85 consecutive ischemic stroke patients diagnosed with atrial fibrillation and/or rheumatic heart disease: prothrombintime (PT), activated partial thromboplastin time (APTT), and levels of D-dimer and fibrinogen. Indicators were assessed within 24 h after admission...
April 2017: Aging and Disease
https://www.readbyqxmd.com/read/28400979/depression-diabetes-and-dementia-formaldehyde-may-be-a-common-causal-agent-could-carnosine-a-pluripotent-peptide-be-protective
#11
COMMENT
Alan R Hipkiss
No abstract text is available yet for this article.
April 2017: Aging and Disease
https://www.readbyqxmd.com/read/28203485/relationship-of-circulating-cxcr4-epc-with-prognosis-of-mild-traumatic-brain-injury-patients
#12
Yunpeng Lin, Lan Lan Luo, Jian Sun, Weiwei Gao, Ye Tian, Eugene Park, Andrew Baker, Jieli Chen, Rongcai Jiang, Jianning Zhang
To investigate the changes of circulating endothelial progenitor cells (EPCs) and stromal cell-derived factor-1α (SDF-1α)/CXCR4 expression in patients with mild traumatic brain injury (TBI) and the correlation between EPC level and the prognosis of mild TBI. 72 TBI patients (57 mild TBI, 15 moderate TBI patients) and 25 healthy subjects (control) were included. The number of circulating EPCs, CD34(+), and CD133(+) cells and the percentage of CXCR4(+) cells in each cell population at 1,4,7,14,21 days after TBI were counted by flow cytometer...
February 2017: Aging and Disease
https://www.readbyqxmd.com/read/28203484/lw-afc-effects-on-n-glycan-profile-in-senescence-accelerated-mouse-prone-8-strain-a-mouse-model-of-alzheimer-s-disease
#13
Jianhui Wang, Xiaorui Cheng, Ju Zeng, Jiangbei Yuan, Zhongfu Wang, Wenxia Zhou, Yongxiang Zhang
Glycosylation is one of the most common eukaryotic post-translational modifications, and aberrant glycosylation has been linked to many diseases. However, glycosylation and glycome analysis is a significantly challenging task. Although several lines of evidence have indicated that protein glycosylation is defective in Alzheimer's disease (AD), only a few studies have focused on AD glycomics. The etiology of AD is unclear and there are no effective disease-modifying treatments for AD. In this study, we found that the object recognition memory, passive avoidance, and spatial learning and memory of senescence-accelerated mouse prone 8 (SAMP8) strain, an AD animal model, were deficient, and LW-AFC, which was prepared from the traditional Chinese medicine prescription Liuwei Dihuang decoction, showed beneficial effects on the deterioration of cognitive capability in SAMP8 mice...
February 2017: Aging and Disease
https://www.readbyqxmd.com/read/28203483/galanin-protects-from-caspase-8-12-initiated-neuronal-apoptosis-in-the-ischemic-mouse-brain-via-galr1
#14
Yun Li, Zhu Mei, Shuiqiao Liu, Tong Wang, Hui Li, Xiao-Xiao Li, Song Han, Yutao Yang, Junfa Li, Zhi-Qing David Xu
Galanin (GAL) plays key role in many pathophysiological processes, but its role in ischemic stroke remains unclear. Here, the models of 1 h middle cerebral artery occlusion (MCAO)/1-7 d reperfusion (R)-induced ischemic stroke and in vitro cell ischemia of 1 h oxygen-glucose deprivation (OGD)/24 h reoxygenation in primary cultured cortical neurons were used to explore GAL's effects and its underlying mechanisms. The results showed significant increases of GAL protein levels in the peri-infarct region (P) and infarct core (I) within 48 h R of MCAO mice (p<0...
February 2017: Aging and Disease
https://www.readbyqxmd.com/read/28203482/long-non-coding-rna-h19-induces-cerebral-ischemia-reperfusion-injury-via-activation-of-autophagy
#15
Jue Wang, Bin Cao, Dong Han, Miao Sun, Juan Feng
Long non-coding RNA H19 (lncRNA H19) was found to be upregulated by hypoxia, its expression and function have never been tested in cerebral ischemia and reperfusion (I/R) injury. This study intended to investigate the role of lncRNA H19 and H19 gene variation in cerebral I/R injury with focusing on its relationship with autophagy activation. Cerebral I/R was induced in rats by middle cerebral artery occlusion followed by reperfusion. SH-SY5Y cells were subjected to oxygen and glucose deprivation and reperfusion (OGD/R) to simulate I/R injury...
February 2017: Aging and Disease
https://www.readbyqxmd.com/read/28203481/lens-endogenous-peptide-%C3%AE-a66-80-generates-hydrogen-peroxide-and-induces-cell-apoptosis
#16
Murugesan Raju, Puttur Santhoshkumar, K Krishna Sharma
In previous studies, we reported the presence of a large number of low-molecular-weight (LMW) peptides in aged and cataract human lens tissues. Among the LMW peptides, a peptide derived from αA-crystallin, αA66-80, was found in higher concentration in aged and cataract lenses. Additional characterization of the αA66-80 peptide showed beta sheet signature, and it formed well-defined unbranched fibrils. Further experimental data showed that αA66-80 peptide binds α-crystallin, impairs its chaperone function, and attracts additional crystallin proteins to the peptide α-crystallin complex, leading to the formation of larger light scattering aggregates...
February 2017: Aging and Disease
https://www.readbyqxmd.com/read/28203480/a-novel-immunosuppressor-5r-5-hydroxytriptolide-alleviates-movement-disorder-and-neuroinflammation-in-a-6-ohda-hemiparkinsonian-rat-model
#17
Ruijun Su, Min Sun, Wei Wang, Jianliang Zhang, Li Zhang, Junli Zhen, Yanjing Qian, Yan Zheng, Xiaomin Wang
Parkinson's disease (PD) is one of the most common age-related neurodegenerative diseases. Promising therapies for PD still need to be explored. Immune dysfunction has been found to be involved in PD pathogenesis. Here, a novel immunosuppressor, (5R)-5-hydroxytriptolide (LLDT8), was used to treat 6-hydroxydopamine (6-OHDA)-induced hemiparkinson rats. We found that oral administration of LLDT8 significantly alleviated apomorphine-induced rotations at a dose of 125 µg/kg, and improved performance in cylinder and rotarod tests at a lower dose of 31...
February 2017: Aging and Disease
https://www.readbyqxmd.com/read/28203479/metformin-impairs-spatial-memory-and-visual-acuity-in-old-male-mice
#18
Nopporn Thangthaeng, Margaret Rutledge, Jessica M Wong, Philip H Vann, Michael J Forster, Nathalie Sumien
Metformin is an oral anti-diabetic used as first-line therapy for type 2 diabetes. Because benefits of metformin extend beyond diabetes to other age-related pathology, and because its effect on gene expression profiles resembles that of caloric restriction, metformin has a potential as an anti-aging intervention and may soon be assessed as an intervention to extend healthspan. However, beneficial actions of metformin in the central nervous system have not been clearly established. The current study examined the effect of chronic oral metformin treatment on motor and cognitive function when initiated in young, middle-aged, or old male mice...
February 2017: Aging and Disease
https://www.readbyqxmd.com/read/28203478/potential-biochemical-mechanisms-of-lung-injury-in-diabetes
#19
REVIEW
Hong Zheng, Jinzi Wu, Zhen Jin, Liang-Jun Yan
Accumulating evidence has shown that the lung is one of the target organs for microangiopathy in patients with either type 1 or type 2 diabetes mellitus (DM). Diabetes is associated with physiological and structural abnormalities in the diabetic lung concurrent with attenuated lung function. Despite intensive investigations in recent years, the pathogenic mechanisms of diabetic lung injury remain largely elusive. In this review, we summarize currently postulated mechanisms of diabetic lung injury. We mainly focus on the pathogenesis of diabetic lung injury that implicates key pathways, including oxidative stress, non-enzymatic protein glycosylation, polyol pathway, NF-κB pathway, and protein kinase c pathway...
February 2017: Aging and Disease
https://www.readbyqxmd.com/read/28203477/imaging-and-quantitative-analysis-of-the-interstitial-space-in-the-caudate-nucleus-in-a-rotenone-induced-rat-model-of-parkinson-s-disease-using-tracer-based-mri
#20
Deyong Lv, Jingbo Li, Hongfu Li, Yu Fu, Wei Wang
Parkinson's disease (PD) is characterized by pathological changes within several deep structures of the brain, including the substantia nigra and caudate nucleus. However, changes in interstitial fluid (ISF) flow and the microstructure of the interstitial space (ISS) in the caudate nucleus in PD have not been reported. In this study, we used tracer-based magnetic resonance imaging (MRI) to quantitatively investigate the alterations in ISS and visualize ISF flow in the caudate nucleus in a rotenone-induced rat model of PD treated with and without madopar...
February 2017: Aging and Disease
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