keyword
MENU ▼
Read by QxMD icon Read
search

Immunosenescence

keyword
https://www.readbyqxmd.com/read/28326084/hiv-infection-and-compromised-mucosal-immunity-oral-manifestations-and-systemic-inflammation
#1
REVIEW
Samantha E Heron, Shokrollah Elahi
Mucosal surfaces account for the vast majority of HIV transmission. In adults, HIV transmission occurs mainly by vaginal and rectal routes but rarely via oral route. By contrast, pediatric HIV infections could be as the result of oral route by breastfeeding. As such mucosal surfaces play a crucial role in HIV acquisition, and spread of the virus depends on its ability to cross a mucosal barrier. HIV selectively infects, depletes, and/or dysregulates multiple arms of the human immune system particularly at the mucosal sites and causes substantial irreversible damage to the mucosal barriers...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28319893/role-of-macrophages-in-age-related-oxidative-stress-and-lipofuscin-accumulation-in-mice
#2
Carmen Vida, Irene Martínez de Toda, Julia Cruces, Antonio Garrido, Mónica Gonzalez-Sanchez, Mónica De la Fuente
The age-related changes in the immune functions (immunosenescence) may be mediated by an increase of oxidative stress and damage affecting leukocytes. Although the "oxidation-inflammation" theory of aging proposes that phagocytes are the main immune cells contributing to "oxi-inflamm-aging", this idea has not been corroborated. The aim of this work was to characterize the age-related changes in several parameters of oxidative stress and immune function, as well as in lipofuscin accumulation ("a hallmark of aging"), in both total peritoneal leukocyte population and isolated peritoneal macrophages...
March 9, 2017: Redox Biology
https://www.readbyqxmd.com/read/28319836/a-cross-sectional-comparison-of-ethanol-related-cytokine-expression-in-the-hippocampus-of-young-and-aged-fischer-344-rats
#3
Anny Gano, Tamara L Doremus-Fitzwater, Terrence Deak
Our work in Sprague Dawley rats has shown rapid alterations in neuroimmune gene expression (RANGE) in the hippocampus and paraventricular nucleus of the hypothalamus (PVN). These manifest as increased interleukin (IL)-6 and IκBα, and suppressed IL-1β and tumor necrosis factor alpha during acute ethanol intoxication. The present studies tested these effects across the lifespan (young adulthood at 2-3 months; senescence at 18 and 24 months), as well as across strain (Fischer 344) and sex. The hippocampus revealed age-dependent shifts in cytokine expression (IL-6, IL-1β, and monocyte chemoattractant protein 1), but no changes were observed in the PVN at baseline or following ethanol...
March 17, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28298208/looking-back-to-move-forward-a-twenty-year-audit-of-herpes-zoster-in-asia-pacific
#4
REVIEW
Liang-Kung Chen, Hidenori Arai, Liang-Yu Chen, Ming-Yueh Chou, Samsuridjal Djauzi, Birong Dong, Taro Kojima, Ki Tae Kwon, Hoe Nam Leong, Edward M F Leung, Chih-Kuang Liang, Xiaohong Liu, Dilip Mathai, Jiun Yit Pan, Li-Ning Peng, Eduardo Rommel S Poblete, Philip J H Poi, Stewart Reid, Terapong Tantawichien, Chang Won Won
BACKGROUND: Herpes zoster (HZ) is a prevalent viral disease that inflicts substantial morbidity and associated healthcare and socioeconomic burdens. Current treatments are not fully effective, especially among the most vulnerable patients. Although widely recommended, vaccination against HZ is not routine; barriers in Asia-Pacific include long-standing neglect of adult immunisation and sparse local data. To address knowledge gaps, raise awareness, and disseminate best practice, we reviewed recent data and guidelines on HZ from the Asia-Pacific region...
March 15, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28293557/sepsis-and-immunosenescence-in-the-elderly-patient-a-review
#5
REVIEW
Silvia Martín, Alba Pérez, Cesar Aldecoa
Sepsis is a prevalent, serious medical condition with substantial mortality and a significant consumption of health-care resources. Its incidence has increased around 9% annually in general population over the last years and specially in aged patients group. Several risk factors such as comorbidities, preadmission status, malnutrition, frailty, and an impared function in the immune system called immunosenescence are involved in the higher predisposition to sepsis in the elderly patients. Immunosenescence status consists in a functional impairment in both cell-mediated immunity and humoral immune responses and increases not only the risk for develop sepsis but also lead to more severe presentation of infection and may be is also related with a higher mortality...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28285577/the-in-vitro-influence-of-a-genetic-superoxide-hydrogen-peroxide-imbalance-on-immunosenescence
#6
Fernanda Barbisan, Verônica Farina Azzolin, Euler Esteves Ribeiro, Marta Maria Medeiros Frescura Duarte, Ivana Cruz
As superoxide is a key molecule of inflammatory activation, superoxide- hydrogen peroxide (S-HP) imbalance genetically caused could to alter immunosenescence patterns. To test this hypothesis, we collect and cultured peripheral blood mononuclear cells carrier´s different genotypes of a genetic polymorphism located in the superoxide dismutase manganese dependent gene (Val16Ala-SOD2). We used an in vitro genetic model based in prior studies, which suggested association between homozygous genotypes (AA and VV) and alterations in oxidative-inflammatory mediators...
March 12, 2017: Rejuvenation Research
https://www.readbyqxmd.com/read/28276994/immunosenescence-and-hurdles-in-the-clinical-management-of-older-hiv-patients
#7
Marco Ripa, Stefania Chiappetta, Giuseppe Tambussi
People living with HIV (PLWH) who are treated with effective highly active antiretroviral therapy (HAART) have a similar life expectancy to the general population. Moreover, an increasing proportion of new HIV diagnoses are made in people older than 50 y. The number of older HIV-infected patients is thus constantly growing and it is expected that by 2030 around 70% of PLWH will be more than 50 y old. On the other hand, HIV infection itself is responsible for accelerated immunosenescence, a progressive decline of immune system function in both the adaptive and the innate arm, which impairs the ability of an individual to respond to infections and to give rise to long-term immunity; furthermore, older patients tend to have a worse immunological response to HAART...
February 21, 2017: Virulence
https://www.readbyqxmd.com/read/28261208/t-cell-subpopulations-in-healthy-elderly-and-lung-cancer-patients-insights-from-cuban-studies
#8
REVIEW
Danay Saavedra, Beatriz Garcia, Agustin Lage
The senescence of the immune system and the risk of cancer increase with aging. Age itself entails changes in the immune system, which are related to a decrease in thymic output of naïve lymphocytes, an accumulation of chronic antigenic load, notably chronic viral infections such as cytomegalovirus (CMV), and replicative senescence of lymphocytes. These changes could eventually contribute to cancer risk and affect the response to cancer treatment. However, several confounding factors make it difficult to draw a picture of causal relationships...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28253901/the-intranasal-adjuvant-endocine%C3%A2-enhances-both-systemic-and-mucosal-immune-responses-in-aged-mice-immunized-with-influenza-antigen
#9
Tina Falkeborn, Jorma Hinkula, Marie Olliver, Alf Lindberg, Anna-Karin Maltais
Despite availability of annual influenza vaccines, influenza causes significant morbidity and mortality in the elderly. This is at least in part a result of immunosenescence; the age-dependent decrease in immunological competence that results in greater susceptibility to infections and reduced responses to vaccination. To improve protective immune responses in this age group, new vaccines strategies, such as the use of adjuvants, are needed. Here, we evaluated the mucosal vaccine adjuvant Endocine™, formulated with split influenza antigen and administered intranasally in aged (20-month old) mice...
March 3, 2017: Virology Journal
https://www.readbyqxmd.com/read/28250797/changes-in-peripheral-immune-cell-numbers-and-functions-in-octogenarian-walkers-an-acute-exercise-study
#10
Kornelis S M van der Geest, Qi Wang, Thijs M H Eijsvogels, Hans J P Koenen, Irma Joosten, Elisabeth Brouwer, Maria T E Hopman, Joannes F M Jacobs, Annemieke M H Boots
BACKGROUND: Age-related changes of the immune system, termed immunosenescence, may underlie the increased risk of infections and morbidity in the elderly. Little is known about the effects of acute exercise on peripheral immune parameters in octogenarians. Therefore, we investigated acute exercise-induced changes in phenotype and function of the immune system in octogenarians participating in the 2013 edition of the Nijmegen Four Days Marches. Blood sampling was performed at baseline and immediately after 4 days of the walking exercise (30 km/day)...
2017: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/28246613/continuous-dual-resetting-of-the-immune-repertoire-as-a-basic-principle-of-the-immune-system-function
#11
REVIEW
Silvana Balzar
Idiopathic chronic inflammatory conditions (ICIC) such as allergy, asthma, chronic obstructive pulmonary disease, and various autoimmune conditions are a worldwide health problem. Understanding the pathogenesis of ICIC is essential for their successful therapy and prevention. However, efforts are hindered by the lack of comprehensive understanding of the human immune system function. In line with those efforts, described here is a concept of stochastic continuous dual resetting (CDR) of the immune repertoire as a basic principle that governs the function of immunity...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28245459/the-somatotrope-growth-hormone-releasing-hormone-growth-hormone-insulin-like-growth-factor-1-axis-in-immunoregulation-and-immunosenescence
#12
Gwennaëlle Bodart, Khalil Farhat, Chantal Charlet-Renard, Roberto Salvatori, Vincent Geenen, Henri Martens
Most scientific reports debate the thymotropic and immuno-stimulating properties of the somatotrope growth hormone-releasing hormone (GHRH)/growth hormone (GH)/insulin-like growth factor (IGF)-1 axis, but there is still some disagreement about the physiological role of this axis in basal conditions. Moreover, some authors have hypothesized that the physiological role of the somatotrope axis only appears in stressful conditions (such as sepsis or infective and inflammatory diseases). This chapter will provide an extended overview of the expression of the components (signals and receptors) of the somatotrope axis and their properties on cells of the innate and adaptive immune system...
2017: Frontiers of Hormone Research
https://www.readbyqxmd.com/read/28240280/erratum-common-variable-immunodeficiency-patients-with-a-phenotypic-profile-of-immunosenescence-present-with-thrombocytopenia
#13
Jan Stuchlý, Veronika Kanderová, Marcela Vlková, Ivana Heřmanová, Lucie Slámová, Ondřej Pelák, Eli Taraldsrud, Dalibor Jílek, Pavlína Králíčková, Børre Fevang, Marie Trková, Ondřej Hrušák, Eva Froňková, Anna Šedivá, Jiří Litzman, Tomáš Kalina
No abstract text is available yet for this article.
February 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28223073/immunotherapy-comes-of-age-immune-aging-checkpoint-inhibitors
#14
REVIEW
Rawad Elias, Theodoros Karantanos, Elizabeth Sira, Kevan L Hartshorn
Immune checkpoint inhibitors (ICIs) are based on the understanding that there are multilayered checks and balances which can be manipulated to unleash already existing, but paralyzed, immune responses to cancer. These agents are safer and more efficacious than classic cytotoxic drugs making them a very attractive therapeutic option, especially in older adults. Current available data do not suggest significant age-associated differences in the clinical profile of ICIs. It must be noted, however, that there is still relatively little information on the use of ICIs in adults over 75years of age and aging is associated with a decline in the immune system or "immunosenescence" which theoretically can reduce the efficacy of these immune based therapies...
February 17, 2017: Journal of Geriatric Oncology
https://www.readbyqxmd.com/read/28220304/immunosenescence-and-cancer
#15
Graham Pawelec
Age is a major risk factor for solid cancers, hitherto conventionally viewed in the context of the cell biology of carcinogenesis. However, if cancers are immunogenic, the immune system could protect against tumorigenesis ("immunosurveillance"), and vaccination or other immunomodulatory treatments should be therapeutically beneficial, as has been recently dramatically documented in a fraction of patients with certain tumors responding to immune checkpoint blockade. This begs the question that if immunity decreases with age ("immunosenescence"), this may contribute to increased cancer disease in the elderly and a lower likelihood of clinical benefit from immunotherapy...
February 20, 2017: Biogerontology
https://www.readbyqxmd.com/read/28205317/oxidative-stress-and-immunosenescence-in-spleen-of-obese-mice-can-be-reversed-by-2-hydroxyoleic-acid
#16
Alina Gheorghe, Fátima Pérez de Heredia, Caroline Hunsche, Noemí Redondo, Ligia Esperanza Díaz, Oskarina Hernández, Ascensión Marcos, Mónica De la Fuente
We aimed to investigate the effects of obesity on oxidative stress and leukocyte function in spleen of mice, and to assess whether supplementation with 2-hydroxyoleic acid (2-OHOA) or n-3 polyunsaturated fatty acids (PUFA) could reverse those effects. Female ICR/CD1 mice (8 weeks old, n = 24) received an obesogenic diet (22% fat for 4 weeks and 60% fat for 14 weeks). After 6 weeks, mice were split in three groups (n = 8/group): no supplementation, 2-OHOA supplementation (1500 mg kg(-1) ) and n-3 PUFA supplementation (EPA + DHA, 3000 mg kg(-1) diet)...
February 15, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28161508/contribution-of-neuroinflammation-and-immunity-to-brain-aging-and-the-mitigating-effects-of-physical-and-cognitive-interventions
#17
REVIEW
Svetlana Di Benedetto, Ludmila Müller, Elisabeth Wenger, Sandra Düzel, Graham Pawelec
It is widely accepted that the brain and the immune system continuously interact during normal as well as pathological functioning. Human aging is commonly accompanied by low-grade inflammation in both the immune and central nervous systems, thought to contribute to many age-related diseases. This review of the current literature focuses first on the normal neuroimmune interactions occurring in the brain, which promote learning, memory and neuroplasticity. Further, we discuss the protective and dynamic role of barriers to neuroimmune interactions, which have become clearer with the recent discovery of the meningeal lymphatic system...
February 1, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28155915/age-but-not-anthelmintic-treatment-is-associated-with-urinary-neopterin-levels-in-semi-free-ranging-barbary-macaques
#18
Nadine Müller, Michael Heistermann, Christina Strube, Oliver Schülke, Julia Ostner
Studying host parasite interactions and their implications for evolution and ecology recently received increasing attention, particularly with regard to host physiology and immunity. Here we assess variation of urinary neopterin (uNEO), a marker of cellular immune activation and iummunosenescence, in response to age and anthelmintic treatment in semi-free ranging Barbary macaques (Macaca sylvanus). Urinary NEO levels were measured via enzyme-immunoassay from 179 urine samples of 43 individuals between 5-29 years of age...
February 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28139774/corrigendum-modulation-of-gut-microbiota-and-delayed-immunosenescence-as-a-result-of-syringaresinol-consumption-in-middle-aged-mice
#19
Si-Young Cho, Juewon Kim, Ji Hae Lee, Ji Hyun Sim, Dong-Hyun Cho, Il-Hong Bae, Hyunbok Lee, Min A Seol, Hyun Mu Shin, Tae-Joo Kim, Dae-Yong Kim, Su-Hyung Lee, Song Seok Shin, Sin-Hyeog Im, Hang-Rae Kim
No abstract text is available yet for this article.
January 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28138335/lifewide-profile-of-cytokine-production-by-innate-and-adaptive-immune-cells-from-brazilian-individuals
#20
Gabriela Silveira-Nunes, Elaine Speziali, Andréa Teixeira-Carvalho, Danielle M Vitelli-Avelar, Renato Sathler-Avelar, Taciana Figueiredo-Soares, Maria Luiza Silva, Vanessa Peruhype-Magalhães, Daniel Gonçalves Chaves, Gustavo Eustáquio Brito-Melo, Glenda Meira Cardoso, Eric Bassetti Soares, Silvana Maria Elói-Santos, Rosângela Teixeira, Dulciene Magalhães Queiroz, Rodrigo Corrêa-Oliveira, Ana Maria Caetano Faria, Olindo Assis Martins-Filho
BACKGROUND: Immunosenescence is associated with several changes in adaptive and innate immune cells. Altered cytokine production is among the most prominent of these changes. The impact of age-related alterations on cytokine global profiles produced by distinct populations of leukocytes from healthy Brazilian individuals was studied. We analysed frequencies of cytokine-producing lymphocytes and innate immune cells from individuals at several ages spanning a lifetime period (0-85 years)...
2017: Immunity & Ageing: I & A
keyword
keyword
60430
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"