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Immunity & Ageing: I & A

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https://www.readbyqxmd.com/read/29445414/effects-of-a-new-nutraceutical-combination-on-cognitive-function-in-hypertensive-patients
#1
Giuseppe Giugliano, Alessia Salemme, Sara De Longis, Marialuisa Perrotta, Valentina D'Angelosante, Alessandro Landolfi, Raffaele Izzo, Valentina Trimarco
Background: Chronic increased arterial blood pressure has been associated with executive dysfunction, slowing of attention and mental processing speed, and later with memory deficits. Due to the absence of a concrete therapeutic approach to this pathophysiological process, in the last decades there has been an increasing interest in the use of nutraceuticals, especially those with antioxidant properties, which own strong neuroprotective potential, that may help to improve cognitive function and to delay the onset of dementia...
2018: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/29422938/porphyromonas-gingivalis-a-periodontitis-causing-bacterium-induces-memory-impairment-and-age-dependent-neuroinflammation-in-mice
#2
Ye Ding, Jingyi Ren, Hongqiang Yu, Weixian Yu, Yanmin Zhou
Background: A possible relationship between periodontitis and Alzheimer's disease (AD) has been reported. However, there is limited information on the association between the Porphyromonas gingivalis (P. gingivalis) periodontal infection and the pathological features of AD. The hypothesis that P. gingivalis periodontal infection may cause cognitive impairment via age-dependent neuroinflammation was tested. Results: Thirty 4-week-old (young) female C57BL/6 J mice were randomly divided into two groups, the control group and the experimental group...
2018: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/29416551/interventions-to-restore-appropriate-immune-function-in-the-elderly
#3
REVIEW
Richard Aspinall, Pierre Olivier Lang
Advanced age is one indicator of likely immune dysfunction. As worldwide, the global population contains progressively more and more older individuals there is likelihood of an increased prevalence and incidence of infectious diseases due to common and emergent pathogens. The resultant increase in mortality and morbidity would be matched by the risk of functional decline and disability. Maintaining immune function at a plateau throughout life may therefore be associated with considerable cost savings. The aim of improving immune function in older individuals may be achieved through considering a therapeutic approach to rejuvenate, stimulate or support the indigenous immune system to perform in a more optimal manner...
2018: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/29387136/the-association-of-high-sensitivity-c-reactive-protein-and-incident-alzheimer-disease-in-patients-60%C3%A2-years-and-older-the-hunt-study-norway
#4
Jessica Mira Gabin, Ingvild Saltvedt, Kristian Tambs, Jostein Holmen
Background: With ageing, long-standing inflammation can be destructive, contributing to development of several disorders, among these Alzheimer's disease (AD). C-reactive protein (CRP) is a relatively stable peripheral inflammatory marker, but in previous studies the association between highly sensitive CRP (hsCRP) and AD have shown inconsistent results. This study examines the association between AD and hsCRP in blood samples taken up to 15 years prior to the diagnoses of 52 persons with AD amongst a total of 2150 persons ≥60 years of age...
2018: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/29387135/vaccines-for-the-elderly-current-use-and-future-challenges
#5
REVIEW
Birgit Weinberger
Age-related changes of the immune system contribute to increased incidence and severity of infections in the elderly. Vaccination is the most effective measure to prevent infections and vaccination recommendations in most countries include specific guidelines for the elderly. Vaccination against influenza and Streptococcus pneumoniae is usually recommended for persons with underlying diseases and for the elderly with heterogeneous age limits between ≥ 50 years and ≥ 65 years. Some countries also recommend vaccination against herpes zoster...
2018: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/29387134/molecular-changes-associated-with-increased-tnf-%C3%AE-induced-apoptotis-in-na%C3%A3-ve-tn-and-central-memory-tcm-cd8-t-cells-in-aged-humans
#6
Sudhir Gupta, Houfen Su, Sudhanshu Agrawal, Sastry Gollapudi
Background: Progressive T cell decline in aged humans is associated with a deficiency of naïve (TN) and central memory (TCM) T cells. We have previously reported increased Tumor necrosis factor-α (TNF-α)-induced apoptosis in TN and TCM T cells in aged humans; however, the molecular basis of increased apoptosis remains to be defined. Since expression of TNF receptors (TNFRs) was reported to be comparable in young and aged, we investigated signaling events downstream of TNFRs to understand the molecular basis of increased TNF-α-induced apoptosis in aged TN and TCM CD8+ cells...
2018: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/29387133/ageing-from-inflammation-to-cancer
#7
REVIEW
Giulia C Leonardi, Giulia Accardi, Roberto Monastero, Ferdinando Nicoletti, Massimo Libra
Ageing is the major risk factor for cancer development. Hallmark of the ageing process is represented by inflammaging, which is a chronic and systemic low-grade inflammatory process. Inflammation is also a hallmark of cancer and is widely recognized to influence all cancer stages from cell transformation to metastasis. Therefore, inflammaging may represent the biological phenomena able to couple ageing process with cancer development. Here we review the molecular and cellular pathway involved in age-related chronic inflammation along with its potential triggers and their connection with cancer development...
2018: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/29296117/immunological-and-non-immunological-mechanisms-of-allergic-diseases-in-the-elderly-biological-and-clinical-characteristics
#8
REVIEW
Gabriele Di Lorenzo, Danilo Di Bona, Federica Belluzzo, Luigi Macchia
A better hygiene, a Westernized diet, air pollution, climate changes, and other factors that influence host microbiota, a key player in the induction and maintenance of immunoregulatory circuits and tolerance, are thought to be responsible for the increase of allergic diseases observed in the last years. The increase of allergic diseases in elderly is related to the presence of other factors as several comorbidities that should interfere with the development and the type of allergic reactions. A central role is played by immunosenescence responsible for modifying response to microbiota and triggering inflamm-ageing...
2017: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/29176992/immunosenescence-in-persons-with-spinal-cord-injury-in-relation-to-urinary-tract-infections-a-cross-sectional-study
#9
David Pavlicek, Jörg Krebs, Simona Capossela, Alessandro Bertolo, Britta Engelhardt, Jürgen Pannek, Jivko Stoyanov
Background: Individuals with a spinal cord injury (SCI), despite specialized rehabilitation and good health care, have a reduced life expectancy. Infectious diseases, such as pneumonias, infected pressure sores and urinary tract infections (UTI) have been identified as the leading causes of mortality. We hypothesise that a premature onset of immune frailty occurs in SCI, possibly caused also by recurrent urinary tract infections.A cross sectional study was performed comparing blood and urine samples between able bodied controls (n = 84) and persons with spinal cord injury (n = 85)...
2017: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/29163665/chlorinative-stress-in-age-related-diseases-a-literature-review
#10
REVIEW
Marco Casciaro, Eleonora Di Salvo, Elisabetta Pace, Elvira Ventura-Spagnolo, Michele Navarra, Sebastiano Gangemi
Aging is an agglomerate of biological long-lasting processes that result being inevitable. Main actors in this scenario are both long-term inflammation and oxidative stress. It has been proved that oxidative stress induce alteration in proteins and this fact itself is critically important in the pathophysiological mechanisms leading to diseases typical of aging. Among reactive species, chlorine ones such as hypochlorous acid (HOCl) are cytotoxic oxidants produced by activated neutrophils during chronic inflammation processes...
2017: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/28874912/prescription-database-analyses-indicates-that-the-asthma-medicine-montelukast-might-protect-against-dementia-a-hypothesis-to-be-verified
#11
Bjørn Grinde, Bo Engdahl
BACKGROUND: It has recently been shown that the leukotriene receptor antagonist montelukast rejuvenates aged brains in rats. The question is whether this commonly used, systemic, anti-asthmatic medicine has a similar effect in humans? RESULTS: We approached this issue by doing statistical analyses based on the Norwegian Prescription Database. The Database lists all prescription-based medications in Norway, but not drugs given to people who are in hospitals or nursing homes...
2017: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/28855949/ileal-antimicrobial-peptide-expression-is-dysregulated-in-old-age
#12
Sarah Tremblay, Nathalie Marie Louise Côté, Guillaume Grenier, Gabriella Duclos-Lasnier, Louis-Charles Fortier, Subburaj Ilangumaran, Alfredo Menendez
In an effort to understand the mechanisms underlying the high prevalence of gastrointestinal tract disorders in old age, we investigated the expression of intestinal antimicrobial peptides in the terminal small intestine of aged mice. Our results show that old mice have reduced transcript levels of ileal α-defensins and lysozyme, two important types of intestinal antimicrobial peptides produced by Paneth cells. In contrast, expression of the C-type lectins Reg3b and Reg3g, as well as β-defensin 1, angiogenin 4 and Relmb, which are made by several epithelial cell types, was significantly upregulated in aged animals suggesting an ongoing response to epithelial distress...
2017: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/28769990/altered-activation-state-of-circulating-neutrophils-in-patients-with-neovascular-age-related-macular-degeneration
#13
Marie Krogh Nielsen, Sven Magnus Hector, Kelly Allen, Yousif Subhi, Torben Lykke Sørensen
BACKGROUND: Neutrophil dysfunction plays a key role in the development of diseases characterized by inflammation and angiogenesis. Here, we studied the systemic expression of neutrophil markers reflecting activation, adhesion, and resolution of inflammation in patients with neovascular age-related macular degeneration (AMD). RESULTS: This was a prospective case-control study of patients with neovascular AMD and age-matched healthy control individuals. Patients were recruited from an outpatient program, and control individuals were recruited amongst patients' relatives...
2017: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/28694834/influenza-vaccine-response-in-community-dwelling-german-prefrail-and-frail-individuals
#14
Jürgen M Bauer, Antonio De Castro, Nabil Bosco, Celine Romagny, Rebecca Diekmann, Jalil Benyacoub, Karine Vidal
BACKGROUND: The age-related dysregulation of the immune system in older persons results in reduced responses to vaccination and greater susceptibility to infection, especially in frail individuals who suffer the greatest of morbidity and mortality due to infection. Recently, significantly reduced anti-influenza antibody titers and increased rates of influenza infection after vaccination were reported in community-dwelling American frail older adults. The aim of our study was to further assess the relative impact of frailty and of each individual Fried frailty criterion on influenza vaccine response...
2017: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/28670328/long-term-maintenance-of-diphtheria-specific-antibodies-after-booster-vaccination-is-hampered-by-latent-infection-with-cytomegalovirus
#15
Birgit Weinberger, Michael Keller, Beatrix Grubeck-Loebenstein
Many currently used vaccines are less immunogenic in the elderly compared to young adults. The impact of latent infection with Cytomegalovirus (CMV) on vaccine-induced antibody responses has been discussed controversially. We have demonstrated that recall responses to diphtheria vaccination are frequently insufficient in elderly persons and that antibody concentrations decline substantially within 5 years. In the current study we show that within a cohort of healthy elderly (n = 87; median age 71 years, range 66-92) antibody responses to a booster vaccination against diphtheria do not differ between CMV-negative and CMV-positive individuals 4 weeks after vaccination...
2017: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/28642803/transcriptomic-profiles-of-aging-in-na%C3%A3-ve-and-memory-cd4-cells-from-mice
#16
Jackson Taylor, Lindsay Reynolds, Li Hou, Kurt Lohman, Wei Cui, Stephen Kritchevsky, Charles McCall, Yongmei Liu
BACKGROUND: CD4+ T cells can be broadly divided into naïve and memory subsets, each of which are differentially impaired by the aging process. It is unclear if and how these differences are reflected at the transcriptomic level. We performed microarray profiling on RNA derived from naïve (CD44(low)) and memory (CD44(high)) CD4+ T cells derived from young (2-3 month) and old (28 month) mice, in order to better understand the mechanisms of age-related functional alterations in both subsets...
2017: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/28642802/perk-dependent-defective-tcr-mediated-activation-of-cd4-t-cells-in-end-stage-renal-disease-patients
#17
Ling Huang, Nicolle H R Litjens, Nynke M Kannegieter, Mariska Klepper, Carla C Baan, Michiel G H Betjes
BACKGROUND: Patients with end-stage renal disease (ESRD) have an impaired immune response with a prematurely aged T-cell system. Mitogen-activated protein kinases (MAPKs) including extracellular signal-regulated kinase (ERK) and p38, regulate diverse cellular programs by transferring extracellular signals into an intracellular response. T cell receptor (TCR)-induced phosphorylation of ERK (pERK) may show an age-associated decline, which can be reversed by inhibiting dual specific phosphatase (DUSP) 6, a cytoplasmic phosphatase with substrate specificity to dephosphorylate pERK...
2017: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/28630637/evaluation-of-circulating-srage-in-osteoporosis-according-to-bmi-adipokines-and-fracture-risk-a-pilot-observational-study
#18
Emanuela Galliera, Monica Gioia Marazzi, Carmine Gazzaruso, Pietro Gallotti, Adriana Coppola, Tiziana Montalcini, Arturo Pujia, Massimiliano M Corsi Romanelli
BACKGROUND: Osteoporosis is a systemic metabolic disease based on age-dependent imbalance between the rates of bone formation and bone resorption. Recent studies on the pathogenesis of this disease identified that bone remodelling impairment, at the base of osteoporotic bone fragility, could be related to protein glycation, in association to oxidative stress. The glycation reactions lead to the generation of glycation end products (AGEs) which, in turn, accumulates into bone, where they binds to the receptor for AGE (RAGE)...
2017: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/28592983/age-dependent-accumulation-patterns-of-advanced-glycation-end-product-receptor-rage-ligands-and-binding-intensities-between-rage-and-its-ligands-differ-in-the-liver-kidney-and-skeletal-muscle
#19
Myeongjoo Son, Wook-Jin Chung, Seyeon Oh, Hyosang Ahn, Chang Hu Choi, Suntaek Hong, Kook Yang Park, Kuk Hui Son, Kyunghee Byun
BACKGROUND: Much evidence indicates receptor for advanced glycation end products (RAGE) related inflammation play essential roles during aging. However, the majority of studies have focused on advanced glycation end products (AGEs) and not on other RAGE ligands. In the present study, the authors evaluated whether the accumulation of RAGE ligands and binding intensities between RAGE and its ligands differ in kidney, liver, and skeletal muscle during aging. RESULTS: In C57BL/6 N mice aged 12 weeks, 12 months, and 22 months, ligands accumulation, binding intensities between RAGE and its ligands, activated macrophage infiltration, M1/M2 macrophage expression, glyoxalase-1expression, and signal pathways related to inflammation were evaluated...
2017: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/28529533/low-expression-of-cd39-and-cd73-genes-in-centenarians-compared-with-octogenarians
#20
Almudena Crooke, Juan Martínez-Henández, Joaquín Martínez-López, Alfonso Cruz-Jentoft, Fernando Huete-Toral, Jesús Pintor
Ageing involves a progressive decline of the body's regulatory systems including immune system. Adenosine regulates immune function by interaction with its receptors, mainly adenosine A2A receptor, present on the surface of immune cells. Furthermore, cellular response to this nucleoside is highly dependent on its extracellular concentration that is regulated by ecto-enzymes such as CD39 and CD73. Therefore, the aim of this study was to investigate the effect of age on adenosine A2A receptor, CD39 and CD73 gene expression...
2017: Immunity & Ageing: I & A
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