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Aging and Disease

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https://www.readbyqxmd.com/read/28840063/p53-dysfunction-in-neurodegenerative-diseases-the-cause-or-effect-of-pathological-changes
#1
REVIEW
Aleksandra Szybińska, Wiesława Leśniak
Neurodegenerative diseases are a heterogeneous, mostly age-associated group of disorders characterized by progressive neuronal loss, the most prevalent being Alzheimer disease. It is anticipated that, with continuously increasing life expectancy, these diseases will pose a serious social and health problem in the near feature. Meanwhile, however, their etiology remains largely obscure even though all possible novel clues are being thoroughly examined. In this regard, a concept has been proposed that p53, as a transcription factor controlling many vital cellular pathways including apoptosis, may contribute to neuronal death common to all neurodegenerative disorders...
July 2017: Aging and Disease
https://www.readbyqxmd.com/read/28840062/recent-progress-in-vascular-aging-mechanisms-and-its-role-in-age-related-diseases
#2
REVIEW
Xianglai Xu, Brian Wang, Changhong Ren, Jiangnan Hu, David A Greenberg, Tianxiang Chen, Liping Xie, Kunlin Jin
As with many age-related diseases including vascular dysfunction, age is considered an independent and crucial risk factor. Complicated alterations of structure and function in the vasculature are linked with aging hence, understanding the underlying mechanisms of age-induced vascular pathophysiological changes holds possibilities for developing clinical diagnostic methods and new therapeutic strategies. Here, we discuss the underlying molecular mediators that could be involved in vascular aging, e.g., the renin-angiotensin system and pro-inflammatory factors, metalloproteinases, calpain-1, monocyte chemoattractant protein-1 (MCP-1) and TGFβ-1 as well as the potential roles of testosterone and estrogen...
July 2017: Aging and Disease
https://www.readbyqxmd.com/read/28840061/aging-airways-between-normal-and-disease-a-multidimensional-diagnostic-approach-by-combining-clinical-functional-and-imaging-data
#3
REVIEW
Mariaelena Occhipinti, Anna Rita Larici, Lorenzo Bonomo, Raffaele Antonelli Incalzi
The lack of data on lung function decline in the aging process as well as the lack of gold standards to define obstructive and restrictive respiratory disease in older people point out the need for a multidimensional assessment and interpretation of the aging airways. By integrating clinical data together with morphologic and morphometric findings clinicians can assess the airways with a more comprehensive perspective, helpful in the interpretation of the "grey zone" between normal aging and disease. This review focuses on the value of a multidimensional approach in the study of the aging airways, including clinical findings, respiratory function tests, and imaging as parts of a whole...
July 2017: Aging and Disease
https://www.readbyqxmd.com/read/28840060/mitochondrial-ferritin-protects-hydrogen-peroxide-induced-neuronal-cell-damage
#4
Guofen Gao, Nan Zhang, Yue-Qi Wang, Qiong Wu, Peng Yu, Zhen-Hua Shi, Xiang-Lin Duan, Bao-Lu Zhao, Wen-Shuang Wu, Yan-Zhong Chang
Oxidative stress and iron accumulation are tightly associated with neurodegenerative diseases. Mitochondrial ferritin (FtMt) is identified as an iron-storage protein located in the mitochondria, and its role in regulation of iron hemeostasis in neurodegenerative diseases has been reported. However, the role of FtMt in hydrogen peroxide (H2O2)-induced oxidative stress and iron accumulation in neuronal cells has not been studied. Here, we overexpressed FtMt in neuroblastoma SH-SY5Y cells and induced oxidative stress by treating with extracellular H2O2...
July 2017: Aging and Disease
https://www.readbyqxmd.com/read/28840059/dopamine-burden-induced-the-inactivation-of-sonic-hedgehog-signaling-to-cognitive-decline-in-minimal-hepatic-encephalopathy
#5
Saidan Ding, Jianjing Yang, Xueli Huang, Leping Liu, Jiangnan Hu, Zhu Xu, Qichuan Zhuge
Minimal hepatic encephalopathy (MHE) is induced by elevated intracranial dopamine (DA). The relationship of the Shh pathway with memory loss in MHE, however, is elusive. In the current study, rats with MHE induced with DA displayed downregulation of the Shh pathway. Additionally, injection of Shh into MHE/DA-treated rats reversed downregulation of BDNF/NT3, whereas administration of cyclopamine (Cyc) enhanced the inhibition of expression of BDNF/NT3. Furthermore, naringin (Nrg) substantially prevented cognitive impairment in MHE/DA-treated rats and upregulated the Shh pathway, paralleling the elevated expression of BDNF/NT3...
July 2017: Aging and Disease
https://www.readbyqxmd.com/read/28840058/p2x7-receptor-and-apoe-polymorphisms-and-survival-from-heart-failure-a-prospective-study-in-frail-patients-in-a-geriatric-unit
#6
Giuseppe Pasqualetti, Marta Seghieri, Eleonora Santini, Chiara Rossi, Edoardo Vitolo, Livia Giannini, Maria Giovanna Malatesta, Valeria Calsolaro, Fabio Monzani, Anna Solini
Heart failure (HF) is one of the most frequent cause of hospitalization in elderly and often coexists with concurrent geriatric syndromes, like cognitive disturbances; various pathophysiological mechanisms are shared by HF and cognitive decline, notably a substrate of low-grade inflammation. We investigated whether SNPs in the purinergic receptor (P2X7R) and apolipoprotein (APO) E genes, both involved in a series of inflammatory responses, are associated to HF or cognitive impairment and are able to predict post-discharge mortality in the elderly...
July 2017: Aging and Disease
https://www.readbyqxmd.com/read/28840057/evaluation-of-the-mann-assessment-of-swallowing-ability-in-elderly-patients-with-pneumonia
#7
Yasuo Chojin, Tatsuji Kato, Mariko Rikihisa, Masami Omori, Shingo Noguchi, Kentaro Akata, Takaaki Ogoshi, Kazuhiro Yatera, Hiroshi Mukae
Elderly pneumonia patients have various underlying diseases and social backgrounds, and it is difficult to predict their mortality using the current severity assessment tools. However, aspiration is a risk factor for mortality in pneumonia patients. In the evaluation of aspiration, endoscopic and video fluoroscopic methods are reliable but cannot be performed in all pneumonia patients. We evaluated the significance of the Mann Assessment of Swallowing Ability (MASA) in these patients. This study was prospectively performed between December 2014 and June 2015, and all adult hospitalized patients with pneumonia were consecutively enrolled...
July 2017: Aging and Disease
https://www.readbyqxmd.com/read/28840056/effects-of-erythropoietin-on-gliogenesis-during-cerebral-ischemic-reperfusion-recovery-in-adult-mice
#8
Rongliang Wang, Jincheng Li, Yunxia Duan, Zhen Tao, Haiping Zhao, Yumin Luo
Erythropoietin (EPO) promotes oligodendrogenesis and attenuates white matter injury in neonatal rats. However, it is unknown whether this effect extends to adult mice and whether EPO regulate microglia polarization after ischemic stroke. Male adult C57BL/6 mice (25-30g) were subjected to 45 min of middle cerebral artery occlusion (MCAO). EPO (5000 IU/kg) or saline was injected intraperitoneally every other day after reperfusion. Neurological function was evaluated using the rotarod test at 1, 3, 7 and 14 days after MCAO...
July 2017: Aging and Disease
https://www.readbyqxmd.com/read/28840055/one-year-readmission-risk-and-mortality-after-hip-fracture-surgery-a-national-population-based-study-in-taiwan
#9
Tien-Ching Lee, Pei-Shan Ho, Hui-Tzu Lin, Mei-Ling Ho, Hsuan-Ti Huang, Je-Ken Chang
Early readmission following hip fracture (HFx) is associated with high morbidity and mortality. We conducted a survival analysis of patients with readmission within 1 year after HFx to elucidate the trend and predictors for readmission. We used Taiwan National Health Insurance Database to recruit HFx patients who underwent operations between 2000 and 2009. Patients < 60 years; with pathological fractures; involved in major traffic accidents; with previous pelvis, femur, and hip operations; or who died during the index admission were excluded...
July 2017: Aging and Disease
https://www.readbyqxmd.com/read/28840054/limb-remote-ischemic-conditioning-promotes-myelination-by-upregulating-pten-akt-mtor-signaling-activities-after-chronic-cerebral-hypoperfusion
#10
Xiaohua Li, Changhong Ren, Sijie Li, Rongrong Han, Jinhuan Gao, Qingjian Huang, Kunlin Jin, Yinghao Luo, Xunming Ji
Limb Remote ischemic conditioning (LRIC) has been proved to be a promising neuroprotective method in white matter lesions after ischemia; however, its mechanism underlying protection after chronic cerebral hypoperfusion remains largely unknown. Here, we investigated whether LRIC promoted myelin growth by activating PI3K/Akt/mTOR signal pathway in a rat chronic hypoperfusion model. Thirty adult male Sprague Dawley underwent permanent double carotid artery (2VO), and limb remote ischemic conditioning was applied for 3 days after the 2VO surgery...
July 2017: Aging and Disease
https://www.readbyqxmd.com/read/28840053/effect-of-adventitial-dissection-of-superficial-temporal-artery-on-the-outcome-of-superficial-temporal-artery-middle-cerebral-artery-bypass-in-moyamoya-disease
#11
Xin Li, Zheng Huang, Ming-Xing Wu, Dong Zhang
Superficial temporal artery-middle cerebral artery (STA-MCA) has been used for the treatment of occlusive cerebrovascular disease including moyamoya disease. The effect of STA-MCA bypass depends not only on the patency of anastomosis, but also on integrity and functional capacity of the donor artery. In the present prospective study, we investigated the effect of extensive stripping STA adventitia and fasciae on hemodynamic function in STA-MCA bypass of moyamoya disease patients. Twenty patients (n=8 in control group, n=12 in stripping group) of moyamoya disease were subjected to STA-MCA end-to-side direct anastomosis...
July 2017: Aging and Disease
https://www.readbyqxmd.com/read/28840052/predictors-of-memory-in-healthy-aging-polyunsaturated-fatty-acid-balance-and-fornix-white-matter-integrity
#12
Marta K Zamroziewicz, Erick J Paul, Chris E Zwilling, Aron K Barbey
Recent evidence demonstrates that age and disease-related decline in cognition depends not only upon degeneration in brain structure and function, but also on dietary intake and nutritional status. Memory, a potential preclinical marker of Alzheimer's disease, is supported by white matter integrity in the brain and dietary patterns high in omega-3 and omega-6 polyunsaturated fatty acids. However, the extent to which memory is supported by specific omega-3 and omega-6 polyunsaturated fatty acids, and the degree to which this relationship is reliant upon microstructure of particular white matter regions is not known...
July 2017: Aging and Disease
https://www.readbyqxmd.com/read/28580191/motor-imagery-based-rehabilitation-potential-neural-correlates-and-clinical-application-for-functional-recovery-of-motor-deficits-after-stroke
#13
REVIEW
Yanna Tong, John T Pendy, William A Li, Huishan Du, Tong Zhang, Xiaokun Geng, Yuchuan Ding
Motor imagery (MI), defined as the mental implementation of an action in the absence of movement or muscle activation, is a rehabilitation technique that offers a means to replace or restore lost motor function in stroke patients when used in conjunction with conventional physiotherapy procedures. This article briefly reviews the concepts and neural correlates of MI in order to promote improved understanding, as well as to enhance the clinical utility of MI-based rehabilitation regimens. We specifically highlight the role of the cerebellum and basal ganglia, premotor, supplementary motor, and prefrontal areas, primary motor cortex, and parietal cortex...
May 2017: Aging and Disease
https://www.readbyqxmd.com/read/28580190/geroprotectors-a-unified-concept-and-screening-approaches
#14
REVIEW
Alexey Moskalev, Elizaveta Chernyagina, Anna Kudryavtseva, Mikhail Shaposhnikov
Although the geroprotectors discovery is a new biomedicine trend and more than 200 compounds can slow aging and increase the lifespan of the model organism, there are still no geroprotectors on the market. The reasons may be partly related to the lack of a unified concept of geroprotector, accepted by the scientific community. Such concept as a system of criteria for geroprotector identification and classification can form a basis for an analytical model of anti-aging drugs, help to consolidate the efforts of various research initiatives in this area and compare their results...
May 2017: Aging and Disease
https://www.readbyqxmd.com/read/28580189/vitamin-d-and-chronic-diseases
#15
REVIEW
Hanmin Wang, Weiwen Chen, Dongqing Li, Xiaoe Yin, Xiaode Zhang, Nancy Olsen, Song Guo Zheng
Vitamin D is one of the essential nutrients to sustain the human health. As a member of the steroid hormone family, it has a classic role in regulating metabolism of calcium and a non-classic role in affecting cell proliferation and differentiation. Epidemiological studies have shown that 25OHD deficiency is closely associated with common chronic diseases such as bone metabolic disorders, tumors, cardiovascular diseases, and diabetes. 25OHD deficiency is also a risk factor for neuropsychiatric disorders and autoimmune diseases...
May 2017: Aging and Disease
https://www.readbyqxmd.com/read/28580188/on-the-relationship-between-energy-metabolism-proteostasis-aging-and-parkinson-s-disease-possible-causative-role-of-methylglyoxal-and-alleviative-potential-of-carnosine
#16
REVIEW
Alan R Hipkiss
Recent research shows that energy metabolism can strongly influence proteostasis and thereby affect onset of aging and related disease such as Parkinson's disease (PD). Changes in glycolytic and proteolytic activities (influenced by diet and development) are suggested to synergistically create a self-reinforcing deleterious cycle via enhanced formation of triose phosphates (dihydroxyacetone-phosphate and glyceraldehyde-3-phosphate) and their decomposition product methylglyoxal (MG). It is proposed that triose phosphates and/or MG contribute to the development of PD and its attendant pathophysiological symptoms...
May 2017: Aging and Disease
https://www.readbyqxmd.com/read/28580187/associations-among-metabolism-circadian-rhythm-and-age-associated-diseases
#17
REVIEW
Yiwei Cao, Rui-Hong Wang
Accumulating epidemiological studies have implicated a strong link between age associated metabolic diseases and cancer, though direct and irrefutable evidence is missing. In this review, we discuss the connection between Warburg effects and tumorigenesis, as well as adaptive responses to environment such as circadian rhythms on molecular pathways involved in metabolism. We also review the central role of the sirtuin family of proteins in physiological modulation of cellular processes and age-associated metabolic diseases...
May 2017: Aging and Disease
https://www.readbyqxmd.com/read/28580186/mash1-dependent-notch-signaling-pathway-regulates-gabaergic-neuron-like-differentiation-from-bone-marrow-derived-mesenchymal-stem-cells
#18
Qianfa Long, Qiang Luo, Kai Wang, Adrian Bates, Ashok K Shetty
GABAergic neuronal cell grafting has promise for treating a multitude of neurological disorders including epilepsy, age-related memory dysfunction, Alzheimer's disease and schizophrenia. However, identification of an unlimited source of GABAergic cells is critical for advancing such therapies. Our previous study implied that reprogramming of bone marrow-derived mesenchymal stem cells (BMSCs) through overexpression of the Achaete-scute homolog 1 (Ascl1, also called Mash1) could generate GABAergic neuron-like cells...
May 2017: Aging and Disease
https://www.readbyqxmd.com/read/28580185/the-soluble-vegf-receptor-sflt-1-contributes-to-impaired-neovascularization-in-aged-mice
#19
Guangxian Zhao, Xian W Cheng, Limei Piao, Lina Hu, Yanna Lei, Guang Yang, Aiko Inoue, Shinyu Ogasawara, Hongxian Wu, Chang-Ning Hao, Kenji Okumura, Masafumi Kuzuya
The mechanism by which angiogenesis declines with aging is not fully understood. Soluble vascular endothelial growth factor receptor 1 (VEGFR1) form (sFlt1) contributes to endothelial dysfunction in pathological conditions. However, the roles of sFlt1 in ischemia-induced neovascularizationof aged animals have not been investigated. To study aging-related sFlt1 change and its impact on ischemia-induced neovascularization, a hindlimb ischemia model was applied to young and aged mice. Blood flow imaging assay revealed that the blood flow recovery remained impaired throughout the follow-up period...
May 2017: Aging and Disease
https://www.readbyqxmd.com/read/28580184/a-fine-tune-role-of-mir-125a-5p-on-foxn1-during-age-associated-changes-in-the-thymus
#20
Minwen Xu, Olga Sizova, Liefeng Wang, Dong-Ming Su
Decline of transcription factor FoxN1, which predominantly regulates thymic epithelial cell (TEC) differentiation and homeostasis lifelong, is demonstrated to be casually related to age-related thymic involution. Whereas, a global role of microRNAs (miRNAs) has also been demonstrated to control and maintain TEC-constituting thymic microenvironment and to be changed in expression profile in the aged thymus. Therefore, it is urgently necessary to build knowledge regarding whether and which miRNAs regulate FoxN1 gene in the aged thymus...
May 2017: Aging and Disease
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