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Muacevic A, Adler JR, Breve F, Magnusson PM, Varrassi G. Exploring the Implications of New-Onset Diabetes in COVID-19: A Narrative Review. Cureus 2023; 15:e33319. [PMID: 36741600 PMCID: PMC9894635 DOI: 10.7759/cureus.33319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 12/26/2022] [Indexed: 01/04/2023] Open
Abstract
Post-viral new-onset diabetes has been an important feature of the COVID-19 pandemic. It is not always clear if new-onset diabetes is the unmasking of a previously undiagnosed condition, the acceleration of prediabetes, or new-onset diabetes that would not have otherwise occurred. Even asymptomatic cases of COVID-19 have been associated with new-onset diabetes. Diabetes that emerges during acute COVID-19 infection tends to have an atypical presentation, characterized by hyperglycemia and potentially life-threatening diabetic ketoacidosis. It is not always clear if new-onset diabetes is type 1 or type 2 diabetes mellitus. Many cases of COVID-associated diabetes appear to be type 1 diabetes, which is actually an autoimmune disorder. The clinical course varies temporally and with respect to outcomes; in some cases, diabetes resolves completely or improves incrementally after recovery from COVID-19. Disruptions in macrophagy caused by COVID-19 infection along with an exaggerated inflammatory response that can occur in COVID-19 also play a role. Those who survive COVID-19 remain at a 40% elevated risk for diabetes in the first year, even if their case of COVID-19 was not particularly severe. A subsequent post-pandemic wave of new diabetes patients may be expected.
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Falcetta MRR, Rocha GBM, Daudt LR, Bublitz AK, Menegolla MP, Borges RDP, Bauer AC. Benefits of water intake on kidney function in older adults: protocol for a randomized controlled trial. GERIATRICS, GERONTOLOGY AND AGING 2022. [DOI: 10.53886/gga.e0220004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Objective: The goal of this study is to evaluate the benefits of an increase in water intake guided by a mathematical formula (per kg of body weight) on kidney function in older adults. Methods: Older adults (≥ 65 years old) cared for at the Internal Medicine Unit of a tertiary hospital will be randomized to receive or not guidance on water intake (30 mL/kg per day) after initial assessment of kidney function. After 14 days, participants will be reevaluated through clinical and laboratory examinations. Patients with uncompensated disease will be excluded. The main outcomes will be glomerular filtration rate and laboratory measures such as serum and urinary osmolality, sodium, urea, 24-h urine volume and serum creatinine, uric acid, and copeptin. The Mini Nutritional Assessment (MNA) questionnaire will be applied to participants at each visit. Categorical variables will be described as numbers of cases (%) and compared using the χ2 test whereas continuous variables will be analyzed with Student’s t-test in relation to baseline measures. The Generalized Estimating Equations (GEE) method will be performed to assess differences over time and between groups. This study was approved by the Institution’s Research Ethics Committee (grant number 16-0153) and is in accordance with the Declaration of Helsinki. Expected Results:By increasing water intake (ml/Kg) we expect to provide an improvement in kidney function in older population assessed by serum creatinine and cystatin-c applied to eGFR formulas. Relevance:Many conditions, both organic and behavioral, can contribute to chronic dehydration states in older adults. To mention, decreased ability to concentrate urine, reduced kidney mass, blood flow, and glomerular filtration rate (GFR) along with changes in sensitivity to hormones such as renin, vasopressin and natriuretic peptide can generate water imbalance, leading to dehydration. For being simple and inexpensive, this strategy may be broadly used and bring several health benefits to older adults.
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Nys C, Vankelecom H. Pituitary disease and recovery: How are stem cells involved? Mol Cell Endocrinol 2021; 525:111176. [PMID: 33503464 DOI: 10.1016/j.mce.2021.111176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 01/13/2021] [Accepted: 01/19/2021] [Indexed: 12/14/2022]
Abstract
The pituitary gland embodies our endocrine hub and rigorously regulates hormone balances in the body, thereby ruling over vital developmental and physiological processes. Pituitary dysfunction and disease strongly impact the organism's biology. Physical damage, tumour development and ageing all negatively affect pituitary state and functionality. On top of its hormone-producing cells, the pituitary contains a population of stem cells. Not only their physiological role is still largely unknown, also whether or how these stem cells are involved in pituitary disease and recovery from defective functionality remains enigmatic. Here, we summarize what is known on the phenotypical and functional behaviour of pituitary stem cells in diseased or dysfunctional gland, as particularly caused by injury, tumourigenesis and ageing.
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Affiliation(s)
- Charlotte Nys
- Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, KU Leuven (University of Leuven), 3000, Leuven, Belgium
| | - Hugo Vankelecom
- Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, KU Leuven (University of Leuven), 3000, Leuven, Belgium.
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Affiliation(s)
- Virginia Boccardi
- Section of Gerontology and Geriatrics, Santa Maria della Misericordia Hospital, Perugia, Italy.
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Trevisan K, Cristina-Pereira R, Silva-Amaral D, Aversi-Ferreira TA. Theories of Aging and the Prevalence of Alzheimer's Disease. BIOMED RESEARCH INTERNATIONAL 2019; 2019:9171424. [PMID: 31317043 PMCID: PMC6601487 DOI: 10.1155/2019/9171424] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 04/22/2019] [Accepted: 05/14/2019] [Indexed: 01/09/2023]
Abstract
OBJECTIVE Aging and AD are associated in some way, then it is reasonable to ask whether or not it is possible to age without AD inexorably appearing at any moment, depending on the period of life. Therefore, the goal of this review is to verify, in light of some aging theories, the prevalence of AD. METHODS For the purpose of this manuscript, the indexers Alzheimer, aging, Alzheimer, and aging were considered; theories of aging were researched. The research was conducted using PubMed, Medline, Scopus, Elsevier, and Google Scholar. RESULTS The most common subjects in the papers analyzed for this manuscript were aging and Alzheimer's disease. The association between Alzheimer and theories of aging seems inconclusive. CONCLUSIONS Accordingly, the general idea is that AD is associated with aging in such a way that almost all people will present this disease; however, it is plausible to consider that the increase in life expectancy will generate a high prevalence of AD. In a general sense, it seems that the theories of aging explain the origin of AD under superlative and catastrophic considerations and use more biomolecular data than social or behavioral data as the bases of analysis, which may be the problem.
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Affiliation(s)
- Kaynara Trevisan
- Laboratory of Physical Anthropology and Biomathematics, Department of Anatomy, Institute of Biomedical Science, Federal University of Alfenas, Alfenas, Brazil
| | - Renata Cristina-Pereira
- Laboratory of Physical Anthropology and Biomathematics, Department of Anatomy, Institute of Biomedical Science, Federal University of Alfenas, Alfenas, Brazil
| | - Danyelle Silva-Amaral
- Laboratory of Physical Anthropology and Biomathematics, Department of Anatomy, Institute of Biomedical Science, Federal University of Alfenas, Alfenas, Brazil
| | - Tales Alexandre Aversi-Ferreira
- Laboratory of Physical Anthropology and Biomathematics, Department of Anatomy, Institute of Biomedical Science, Federal University of Alfenas, Alfenas, Brazil
- Department of Physiology, School of Medicine and Pharmaceutical Sciences, System Emotional Science, University of Toyama, Toyama, Japan
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Wellington D, Laurenson-Schafer H, Abdel-Haq A, Dong T. IFITM3: How genetics influence influenza infection demographically. Biomed J 2019; 42:19-26. [PMID: 30987701 PMCID: PMC6468115 DOI: 10.1016/j.bj.2019.01.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 12/06/2018] [Accepted: 01/07/2019] [Indexed: 12/18/2022] Open
Abstract
The role of host genetics in influenza infection is unclear despite decades of interest. Confounding factors such as age, sex, ethnicity and environmental factors have made it difficult to assess the role of genetics without influence. In recent years a single nucleotide polymorphism, interferon-induced transmembrane protein 3 (IFITM3) rs12252, has been shown to alter the severity of influenza infection in Asian populations. In this review we investigate this polymorphism as well as several others suggested to alter the host's defence against influenza infection. In addition, we highlight the open questions surrounding the viral restriction protein IFITM3 with the hope that by answering some of these questions we can elucidate the mechanism of IFITM3 viral restriction and therefore how this restriction is altered due to the rs12252 polymorphism.
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Affiliation(s)
- Dannielle Wellington
- MRC Human Immunology Unit, WIMM, University of Oxford, OX3 9DS, UK; CAMS Oxford Institute, Nuffield Department of Medicine, Oxford University, OX3 9FZ, UK.
| | - Henry Laurenson-Schafer
- MRC Human Immunology Unit, WIMM, University of Oxford, OX3 9DS, UK; CAMS Oxford Institute, Nuffield Department of Medicine, Oxford University, OX3 9FZ, UK
| | - Adi Abdel-Haq
- MRC Human Immunology Unit, WIMM, University of Oxford, OX3 9DS, UK; Martin-Luther-University, Halle-Wittenberg, Germany
| | - Tao Dong
- MRC Human Immunology Unit, WIMM, University of Oxford, OX3 9DS, UK; CAMS Oxford Institute, Nuffield Department of Medicine, Oxford University, OX3 9FZ, UK.
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Cutolo M. Circadian rhythms and rheumatoid arthritis. Joint Bone Spine 2018; 86:327-333. [PMID: 30227223 DOI: 10.1016/j.jbspin.2018.09.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 09/03/2018] [Indexed: 12/18/2022]
Abstract
Circadian rhythms (Nobel prize for Medicine 2017) regulate, under action of biological clocks located both at the level of central nervous system and inside peripheral cells, several daily activities, embracing sleep, feeding times, energy metabolism, endocrine and immune functions with related pathological conditions, including rheumatoid arthritis (RA). In RA the circadian rhythms impact on cellular functions, involving night synthesis and release of pro-inflammatory cytokines and chemokines, cell migration to inflamed tissues, phagocytosis, proliferative cell response and all are peaking at late night. In chronic inflammatory conditions such as RA, the amplitude of the circadian rhythm of the anti-inflammatory endogenous cortisol availability is not increased as expected and requested, which indicate a reduced night cortisol secretion under the adrenal chronic stress induced by the disease. Therefore, the prevention/treatment of the immune cell night hyperactivity, with related flare of cytokine synthesis and morning RA clinical symptoms, has been shown more effective when the availability of the exogenous glucocorticoids is obtained in the middle of the night (night release). The impressive positive results observed in RA patients treated with modified-night release prednisone with a low-dose chronotherapy, seem applicable even for other agents such as conventional NSAIDs and DMARDs, including the positive experimental and clinical results obtained by the night time daily administration of methotrexate. Interestingly, a very recent study showed that methotrexate upregulates important cell circadian genes, resulting in induction of apoptosis in synovial fibroblasts. The link between the circadian rhythms of the disease and the chronotherapy of RA is promising.
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Affiliation(s)
- Maurizio Cutolo
- Research Laboratories and Academic Division of Rheumatology, Department of Internal Medicine, University of Genova, 16132 Genova, Italy; Postgraduate School of Rheumatology, University of Genova, 16132 Genova, Italy; Department of Internal Medicine, IRCCS Polyclinic Hospital San Martino, 16132 Genova, Italy.
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Alexandrova ML, Danovska MP. Cognitive impairment one year after ischemic stroke: predictorsand dynamics of significant determinants. Turk J Med Sci 2016; 46:1366-1373. [PMID: 27966299 DOI: 10.3906/sag-1403-29] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Accepted: 12/18/2015] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND/AIM Evidence suggests that the risk for dementia increases after stroke. This study investigated the dynamics of the neurological and cognitive status of patients with no baseline dementia over a 1-year period after ischemic stroke. MATERIALS AND METHODS We examined 47 ischemic stroke patients admitted within 48 h of ictus. Their neurological and cognitive statuses, blood biochemical parameters, and microalbuminuria levels were prospectively evaluated over a 1-year period post-stroke. RESULTS A more severe neurological deficit was found in the cognitively impaired patients (P = 0.003). The NIHSS score over a 1-year follow-up period improved only in patients with normal cognition (P = 0.000). Time-varying dynamics of the MMSE score were observed in both patient groups (P = 0.000). Age (Р = 0.000), education (Р = 0.004), sex (Р = 0.041), history of diabetes (Р = 0.045), and serum high sensitive C-reactive protein (hs-CRP) on admission (Р = 0.003) were significant determinants of cognitive decline 1 year after a stroke. The albumin-to-creatinine ratio was high during the whole follow-up period in the cognitively impaired group after adjusting for sex and age (P = 0.010). Binary logistic regression showed that hs-CRP (Р = 0.013) and age (Р = 0.010) were independent predictors of patients' cognitive status 1 year after stroke. CONCLUSION The level of inflammatory markers could be considered as an additional criterion of long-term cognitive impairment.
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Sui BD, Hu CH, Zheng CX, Jin Y. Microenvironmental Views on Mesenchymal Stem Cell Differentiation in Aging. J Dent Res 2016; 95:1333-1340. [PMID: 27302881 DOI: 10.1177/0022034516653589] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Aging is characterized by common environmental changes, such as hormonal, immunologic, and metabolic disorders. These pathologic factors impair the capability of mesenchymal stem cells (MSCs) to generate and maintain functionalized tissue components, contributing to age-related tissue degeneration (e.g., osteoporosis). However, in organismal aging, whether the microenvironmental signals induce common or differential MSC compromise and how they interact at the molecular level in mediating the functional decline of MSCs are not fully understood. In this review, we discuss the respective contribution of microenvironmental pathologic factors to age-related MSC dysfunction-particularly, the shifted differentiation from osteoblasts to adipocytes of bone marrow-derived MSCs. The authors summarize recent works regarding mechanisms underlying MSC-biased differentiation under altered microenvironments, which involve the activation of key signaling pathways, intracellular oxidative stress, and posttranscriptional regulations. In addition, we compare the differential influences of systemic and local microenvironments on MSC differentiation based on our findings. The authors also propose strategies to rescue differentiation disorders of MSCs in aging via modulating microenvironments, by using signaling modulators, anti-inflammatory agents, antioxidants, and metabolic regulators and by promoting mobilization of systemic MSCs to local injury sites. The authors hope that these insights contribute to MSC-based organismal aging research and treatments.
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Affiliation(s)
- B D Sui
- 1 State Key Laboratory of Military Stomatology, Center for Tissue Engineering, Fourth Military Medical University, Xi'an, China.,2 Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - C H Hu
- 1 State Key Laboratory of Military Stomatology, Center for Tissue Engineering, Fourth Military Medical University, Xi'an, China.,2 Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - C X Zheng
- 1 State Key Laboratory of Military Stomatology, Center for Tissue Engineering, Fourth Military Medical University, Xi'an, China.,2 Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - Y Jin
- 1 State Key Laboratory of Military Stomatology, Center for Tissue Engineering, Fourth Military Medical University, Xi'an, China.,2 Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
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Bongiovanni B, Mata-Espinosa D, D'Attilio L, Leon-Contreras JC, Marquez-Velasco R, Bottasso O, Hernandez-Pando R, Bay ML. Effect of cortisol and/or DHEA on THP1-derived macrophages infected with Mycobacterium tuberculosis. Tuberculosis (Edinb) 2015; 95:562-9. [DOI: 10.1016/j.tube.2015.05.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 05/19/2015] [Indexed: 02/06/2023]
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Straub RH, Cutolo M, Pacifici R. Evolutionary medicine and bone loss in chronic inflammatory diseases--A theory of inflammation-related osteopenia. Semin Arthritis Rheum 2015; 45:220-8. [PMID: 26044543 DOI: 10.1016/j.semarthrit.2015.04.014] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 03/02/2015] [Accepted: 04/24/2015] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Bone loss is typical in chronic inflammatory diseases such as rheumatoid arthritis, psoriasis, ankylosing spondylitis, systemic lupus erythematosus, multiple sclerosis, inflammatory bowel diseases, pemphigus vulgaris, and others. It is also typical in transplantation-related inflammation and during the process of aging. While we recognized that bone loss is tightly linked to immune system activation or inflamm-aging in the form of acute, chronic active, or chronic smoldering inflammation, bone loss is typically discussed to be an "accident of inflammation." METHODS Extensive literature search in PubMed central. RESULTS Using elements of evolutionary medicine, energy regulation, and neuroendocrine regulation of homeostasis and immune function, we work out that bone waste is an adaptive, evolutionarily positively selected program that is absolutely necessary during acute inflammation. However, when acute inflammation enters a chronic state due to the inability to terminate inflammation (e.g., in autoimmunity or in continuous immunity against microbes), the acute program of bone loss is a misguided adaptive program. CONCLUSIONS The article highlights the complexity of interwoven pathways of osteopenia.
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Affiliation(s)
- Rainer H Straub
- Laboratory of Experimental Rheumatology and Neuroendocrine Immunology, Department of Internal Medicine I, University Hospital Regensburg, 93042 Regensburg, Germany.
| | - Maurizio Cutolo
- Department of Internal Medicine and Medical Specialties, University of Genova, Genova, Italy
| | - Roberto Pacifici
- Division of Endocrinology, Metabolism and Lipids, Department of Medicine, Emory University, Atlanta, GA
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Giua R, Fontana D, Deda G, Bianchi A, Rabitti C, Antonelli Incalzi R. Composite mantle-cell lymphoma and classical Hodgkin lymphoma in a very old adult. J Am Geriatr Soc 2015; 63:824-6. [PMID: 25900501 DOI: 10.1111/jgs.13355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Renato Giua
- Geriatric Unit, Policlinico Universitario Campus Bio-Medico, Rome, Italy
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Omentin Polymorphism and its Relations to Bone Mineral Density in Women. Arch Med Res 2015; 46:173-80. [DOI: 10.1016/j.arcmed.2015.03.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 03/17/2015] [Indexed: 12/16/2022]
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Shi GF, Yao RX, Wang GY, Wang ZJ, Chen FW. Liquid Chromatography–Tandem Mass Spectrometry Screening Method for the Detection of Radical-Scavenging Natural Antioxidants from the Whole Scutellariae (Radix, Stem and Leaf). J Chromatogr Sci 2015; 53:1140-6. [DOI: 10.1093/chromsci/bmu176] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Indexed: 01/08/2023]
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Mizuguchi T, Kawamoto M, Meguro M, Okita K, Ota S, Ishii M, Ueki T, Nishidate T, Kimura Y, Furuhata T, Hirata K. Impact of aging on morbidity and mortality after liver resection: a systematic review and meta-analysis. Surg Today 2014; 45:259-70. [PMID: 24526292 DOI: 10.1007/s00595-014-0863-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 12/26/2013] [Indexed: 02/06/2023]
Abstract
Surgery involving elderly patients is becoming increasingly common due to the rapid aging of societies all over the world. The objective of this study was to elucidate the prognostic differences between elderly and young patients who undergo liver resection. A systematic review based on the PRISMA flow diagram was conducted. Ovid Medline and PubMed were used to search for relevant literature published between January 2000 and March 2013, and the modified MINORS score was used to assess the methodological quality. In cases of hepatocellular carcinoma and miscellaneous liver tumors, the morbidity and mortality rate did not differ significantly between the elderly and young patients. For patients with colorectal metastatic liver cancer, the mortality of the young patients was 2.7 times lower than that of elderly patients. Our review of high-quality retrospective studies was able to elucidate the clinical risks of age on the outcomes after liver surgery in specific patient populations.
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Affiliation(s)
- Toru Mizuguchi
- Department of Surgery I, Sapporo Medical University School of Medicine, Sapporo Medical University Hospital, Sapporo Medical University, S-1, W-16, Chuo-Ku, Sapporo, Hokkaido, 060-8543, Japan,
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Abstract
UNLABELLED The consequences of influenza virus infection are generally more severe in individuals over 65 years of age (the elderly). Immunosenescence enhances the susceptibility to viral infections and renders vaccination less effective. Understanding age-related changes in the immune system is crucial in order to design prophylactic and immunomodulatory strategies to reduce morbidity and mortality in the elderly. Here, we propose different mathematical models to provide a quantitative understanding of the immune strategies in the course of influenza virus infection using experimental data from young and aged mice. Simulation results suggested a central role of CD8(+) T cells for adequate viral clearance kinetics in young and aged mice. Adding the removal of infected cells by natural killer cells did not improve the model fit in either young or aged animals. We separately examined the infection-resistant state of cells promoted by the cytokines alpha/beta interferon (IFN-α/β), IFN-γ, and tumor necrosis factor alpha (TNF-α). The combination of activated CD8(+) T cells with any of the cytokines provided the best fits in young and aged animals. During the first 3 days after infection, the basic reproductive number for aged mice was 1.5-fold lower than that for young mice (P < 0.05). IMPORTANCE The fits of our models to the experimental data suggest that the increased levels of IFN-α/β, IFN-γ, and TNF-α (the "inflammaging" state) promote slower viral growth in aged mice, which consequently limits the stimulation of immune cells and contributes to the reported impaired responses in the elderly. A quantitative understanding of influenza virus pathogenesis and its shift in the elderly is the key contribution of this work.
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Baylis D, Bartlett DB, Patel HP, Roberts HC. Understanding how we age: insights into inflammaging. LONGEVITY & HEALTHSPAN 2013; 2:8. [PMID: 24472098 PMCID: PMC3922951 DOI: 10.1186/2046-2395-2-8] [Citation(s) in RCA: 259] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Accepted: 04/05/2013] [Indexed: 04/16/2023]
Abstract
Inflammaging is characterized by the upregulation of the inflammatory response that occurs with advancing age; its roots are strongly embedded in evolutionary theory.Inflammaging is believed to be a consequence of a remodelling of the innate and acquired immune system, resulting in chronic inflammatory cytokine production.Complex interrelated genetic, environmental and age-related factors determine an individual's vulnerability or resilience to inflammaging. These factors include polymorphisms to the promoter regions of cytokines, cytokine receptors and antagonists, age-related decreases in autophagy and increased adiposity. Anti-inflammaging describes the upregulation of the hypothalamic-pituitary axis in response to inflammaging, leading to higher levels of cortisol, which in turn may be detrimental, contributing to less successful ageing and frailty. This may be countered by the adrenal steroid dehydroepiandrosterone, which itself declines with age, leaving certain individuals more vulnerable. Inflammaging and anti-inflammaging have both been linked with a number of age-related outcomes, including chronic morbidity, functional decline and mortality. This important area of research offers unique insights into the ageing process and the potential for screening and targeted interventions.
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Affiliation(s)
- Daniel Baylis
- Department of Medicine for Older People, University Hospital Southampton, Southampton, UK
- Academic Geriatric Medicine, University of Southampton, Southampton, UK
| | - David B Bartlett
- MRC-ARUK Centre for Musculoskeletal Ageing Research, University of Birmingham, Birmingham, UK
| | - Harnish P Patel
- Department of Medicine for Older People, University Hospital Southampton, Southampton, UK
- Academic Geriatric Medicine, University of Southampton, Southampton, UK
| | - Helen C Roberts
- Department of Medicine for Older People, University Hospital Southampton, Southampton, UK
- Academic Geriatric Medicine, University of Southampton, Southampton, UK
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Evolutionary medicine and chronic inflammatory state--known and new concepts in pathophysiology. J Mol Med (Berl) 2012; 90:523-34. [PMID: 22271169 PMCID: PMC3354326 DOI: 10.1007/s00109-012-0861-8] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2011] [Revised: 01/07/2012] [Accepted: 01/09/2012] [Indexed: 11/22/2022]
Abstract
During the last 10 years, a series of exciting observations has led to a new theory of pathophysiology using insights from evolutionary biology and neuroendocrine immunology to understand the sequelae of chronic inflammatory disease. According to this theory, disease sequelae can be explained based on redirection of energy-rich fuels from storage organs to the activated immune system. These disease sequelae are highly diverse and include the following: sickness behavior, anorexia, malnutrition, muscle wasting–cachexia, cachectic obesity, insulin resistance with hyperinsulinemia, dyslipidemia, increase of adipose tissue near inflamed tissue, alterations of steroid hormone axes, elevated sympathetic tone and local sympathetic nerve fiber loss, decreased parasympathetic tone, hypertension, inflammation-related anemia, and osteopenia. Since these disease sequelae can be found in many animal models of chronic inflammatory diseases with mammals (e.g., monkeys, mice, rats, rabbits, etc.), the evolutionary time line goes back at least 70 million years. While the initial version of this theory could explain prominent sequelae of chronic inflammatory disease, it did not however address two features important in the pathogenesis of immune-mediated diseases: the time point when an acute inflammatory disease becomes chronic, and the appearance of hypertension in chronic inflammation. To address these aspects more specifically, a new version of the theory has been developed. This version defines more precisely the moment of transition from acute inflammatory disease to chronic inflammatory disease as a time in which energy stores become empty (complete energy consumption). Depending on the amount of stored energy, this time point can be calculated to be 19–43 days. Second, the revised theory addresses the mechanisms of essential hypertension since, on the basis of water loss, acute inflammatory diseases can stimulate water retention using a positively selected water retention system (identical to the energy provision system). In chronic smoldering inflammation, however, there is no increased water loss. In contrast, there is increased water generation in inflamed tissue and inflammatory cells, and the activation of the water retention system persists. This combination leads to a net increase of the systemic fluid volume, which is hypothesized to be the basis of essential hypertension (prevalence in adults 22–32%).
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Aalbers MW, Klinkenberg S, Rijkers K, Verschuure P, Kessels A, Aldenkamp A, Vles J, Majoie M. The effects of vagus nerve stimulation on pro- and anti-inflammatory cytokines in children with refractory epilepsy: an exploratory study. Neuroimmunomodulation 2012; 19:352-8. [PMID: 23038102 DOI: 10.1159/000341402] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2012] [Accepted: 06/25/2012] [Indexed: 01/18/2023] Open
Abstract
OBJECTIVES The vagus nerve has important immunological and anti-inflammatory actions that might be relevant to the beneficial effects of vagus nerve stimulation (VNS). Therefore, we conducted an exploratory study on VNS effects on cytokine levels in plasma and cerebrospinal fluid of children suffering from refractory epilepsy. Moreover, as predictors of the response are lacking, we also aimed to determine if cytokine changes predict the clinical response. METHODS VNS was performed according to a randomized double-blind design: plasma levels were compared between patients who received 20 weeks of high output (therapeutic) (n = 21) or low output (active control) stimulation (n = 20). Thereupon, all patients received high output stimulation for another 19 weeks; levels during this period were compared to baseline. Interictal interleukin-1β, interleukin-6, and interleukin-10 were determined by ELISA. RESULTS No significant changes were found between high and low output groups and between the last 19 weeks of stimulation and baseline. Changes in interleukin-1β correlated with improved IQ (τ = 0.42, p < 0.01). Lower baseline plasma levels of interleukin-6 were associated with more seizure frequency reduction [R(2) = 0.105 (1, 35), p = 0.050]. CONCLUSION Interictal cytokine levels were not altered by VNS but baseline interleukin-6 predicted the clinical response. In the future, patient selection may be aided by determination of the cytokine profile of the patient.
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Heaney JLJ, Phillips AC, Carroll D. Aging, health behaviors, and the diurnal rhythm and awakening response of salivary cortisol. Exp Aging Res 2012; 38:295-314. [PMID: 22540384 DOI: 10.1080/0361073x.2012.672134] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
UNLABELLED BACKGROUND/STUDY CONTEXT: The cortisol diurnal rhythm has previously been examined in relation to age and health behaviors. However, less is known about the relationship between multiple health behaviors and diurnal cortisol in the context of aging, where it is possible that the impact of health behaviors on cortisol varies as a function of age. This study compared the awakening response and diurnal rhythm of cortisol in young versus older adults in relation to health behaviors. METHODS Twenty-four young students (aged 18-22) and 48 community-dwelling older adults (aged 65-88) completed an assessment of health behaviors (exercise, smoking, sleep, diet, alcohol) over the past year. Salivary cortisol was measured over the course of 1 day: immediately upon awakening, 30 min later, and then 3, 6, 9, and 12 h post awakening. Repeated measures/univariate analysis of variance (ANOVA) was used to test main effects of age and health behaviors, and any interaction effects in relation to diurnal cortisol. RESULTS Older adults displayed significantly reduced cortisol upon awakening, a lower cortisol awakening response, and a flatter diurnal profile represented by a reduced area under the curve and cortisol slope. There was also a significant interaction of age, cortisol, and diet; younger adults with a higher fat and lower fruit and vegetable intake exhibited the flattened diurnal cortisol phenotype of the older adults. CONCLUSION These findings suggest that the diurnal rhythm and awakening response of salivary cortisol is significantly reduced in older adults and that variations in the cortisol diurnal rhythm of younger adults are associated with dietary factors. Younger adults with a poor quality of food intake may be vulnerable to a reduction in the amplitude of the cortisol diurnal profile and this may have implications for other aspects of health.
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Affiliation(s)
- Jennifer L J Heaney
- School of Sport and Exercise Sciences, University of Birmingham, Birmingham, West Midlands, England, UK.
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21
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Heffner KL. Neuroendocrine effects of stress on immunity in the elderly: implications for inflammatory disease. Immunol Allergy Clin North Am 2011; 31:95-108. [PMID: 21094926 DOI: 10.1016/j.iac.2010.09.005] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Age-related changes in immune function leave older adults at risk for a host of inflammatory diseases. Immune-mediated inflammatory processes are regulated by neuroendocrine hormones, including glucocorticoids, dehydroepiandrosterone, and the catecholamines, epinephrine, and norepinephrine. This regulation, however, becomes impaired in older adults in light of age-related changes in endocrine function. Chronic stress shows similarly harmful effects on neuroendocrine and immune function and may, therefore, combine with age to further increase disease risk in older adults. This article highlights evidence for the impact of age and stress on neuroendocrine regulation of inflammatory processes that may substantially increase risk for inflammatory disease at older ages.
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Affiliation(s)
- Kathi L Heffner
- Department of Psychiatry, The Rochester Center for Mind-Body Research, University of Rochester Medical Center, 300 Crittenden Boulevard, Box PSYCH-BPSM, Rochester, NY 14642, USA.
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22
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Tiainen K, Hurme M, Hervonen A, Luukkaala T, Jylhä M. Inflammatory markers and physical performance among nonagenarians. J Gerontol A Biol Sci Med Sci 2010; 65:658-63. [PMID: 20421241 DOI: 10.1093/gerona/glq056] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Recent studies have suggested that inflammation may play an important role in aging and the development of disabilities, but knowledge about its importance in the development of muscle weakness and functional disabilities in very old people is limited. This study examined associations between inflammatory markers and physical performance among nonagenarians. METHODS The population-based sample consisted of 197 women and 65 men aged 90 years. Physical performance was assessed according to the Barthel Index, the chair stand, and handgrip strength. Plasma levels of interleukin-6 (IL-6), interleukin-1 receptor antagonist (IL-1Ra), and C-reactive protein (CRP) were determined. RESULTS A gender-adjusted linear regression model showed that high levels of CRP, IL-6, and IL-1Ra were significantly associated with poor handgrip strength (p = .041, p = .023, p < .001, respectively). After adjustment for diseases, smoking and physical exercise high levels of IL-6 and IL-1Ra were still significantly associated with poor hand grip strength (p = .048, p = .004, respectively). In the gender-adjusted model, high levels of CRP, IL-6, and IL-1Ra were significantly associated with a worse Barthel Index (p = .009, p = .004, p = .004, respectively). High levels of CRP and IL-6 were still significantly associated with a worse Barthel Index after adjusted for diseases, smoking and physical exercise (p = .034, p = .041, respectively). In the chair stand, no significant association with inflammatory markers was found. CONCLUSIONS Associations between high levels of inflammatory markers and worse handgrip strength as well as a worse Barthel Index result were evident among nonagenarians. However, the association with the chair stand was not significant.
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Affiliation(s)
- Kristina Tiainen
- Tampere School of Public Health, University of Tampere, FI-33014 University of Tampere, Finland.
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23
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Kiecolt-Glaser JK, Heffner KL, Glaser R, Malarkey WB, Porter K, Atkinson C, Laskowski B, Lemeshow S, Marshall GD. How stress and anxiety can alter immediate and late phase skin test responses in allergic rhinitis. Psychoneuroendocrinology 2009; 34:670-80. [PMID: 19150180 PMCID: PMC2819057 DOI: 10.1016/j.psyneuen.2008.11.010] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2008] [Revised: 11/18/2008] [Accepted: 11/19/2008] [Indexed: 11/23/2022]
Abstract
Allergic rhinitis (AR) is the fifth most common chronic disease, and the association between allergic disorders and anxiety is well-documented. To investigate how anxiety and stressors modulate skin prick test (SPT) responses and associated inflammatory responses, 28 men and women with AR were selected by clinical history and skin test responses. The participants were admitted twice to a hospital research unit for 4h in a crossover trial. Changes in SPT wheals were assessed before and after a standardized laboratory speech stressor, as well as again the following morning; skin responses assessed twice during a lab session without a stressor and again the following morning served as the contrast condition. Anxiety heightened the magnitude of allergen-induced wheals following the stressor. As anxiety increased, SPT wheal diameters increased after the stressor, compared to a slight decrease following the control task. Anxiety also substantially enhanced the effects of stress on late phase responses: even skin tests performed the day after the stressor reflected the continuing impact of the speech stressor among the more anxious participants. Greater anxiety was associated with more IL-6 production by Con A-stimulated leukocytes following the stressor compared to the control visit. The data suggest that stress and anxiety can enhance and prolong AR symptoms.
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MESH Headings
- Adolescent
- Adult
- Anxiety/immunology
- Anxiety/metabolism
- Anxiety/physiopathology
- Behavior/physiology
- Catecholamines/metabolism
- Female
- Humans
- Hydrocortisone/metabolism
- Hypersensitivity, Delayed/metabolism
- Hypersensitivity, Delayed/physiopathology
- Hypersensitivity, Immediate/metabolism
- Hypersensitivity, Immediate/physiopathology
- Male
- Psychological Tests
- Rhinitis, Allergic, Seasonal/immunology
- Rhinitis, Allergic, Seasonal/metabolism
- Skin Tests
- Stress, Psychological/immunology
- Stress, Psychological/metabolism
- Stress, Psychological/physiopathology
- Young Adult
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Affiliation(s)
- Janice K Kiecolt-Glaser
- The Ohio State University College of Medicine, Department of Psychiatry, 1670 Upham Drive, Columbus, OH 43210, United States.
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Donoso V, Gomez CR, Orriantia MA, Pérez V, Torres C, Coddou C, Nelson P, Maisey K, Morales B, Fernandez R, Imarai M, Huidobro-Toro JP, Sierra F, Acuña-Castillo C. The release of sympathetic neurotransmitters is impaired in aged rats after an inflammatory stimulus: a possible link between cytokine production and sympathetic transmission. Mech Ageing Dev 2008; 129:728-34. [PMID: 18973771 DOI: 10.1016/j.mad.2008.09.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2008] [Revised: 08/20/2008] [Accepted: 09/26/2008] [Indexed: 01/01/2023]
Abstract
Aging results in a general decline in the response to external insults, including acute inflammatory challenges. In young animals, the inflammatory response requires activation of the sympathetic system, including neurotransmitters such as ATP, and catecholamines (epinephrine and norepinephrine). To test whether aging affects activation of this axis, and whether this in turn might affect cytokine release, we administered lipopolysaccharide (LPS) i.p. to adult, middle-aged and aged Fisher 344 rats (6-, 15- and 23-month old, respectively) and evaluated the early (0-12h) serum levels of Neuropeptide-Y (NP-Y), ATP and vanillyl mandelic acid (VMA, as an indirect measurement of catecholamine levels). In addition, we evaluated the association between these factors and serum levels of the cytokines tumor necrosis factor-alpha (TNFalpha) and interleukin-10 (IL-10). Induction of both ATP and NP-Y was markedly reduced in the serum of aged animals, when compared to their younger counterparts, while induction of VMA was not affected by age. In spite of these changes, serum levels of TNFalpha and IL-10 were strongly hyper induced and delayed in aged rats. The results suggest that during aging there is a dysregulation in sympathetic neurotransmitter regulatory mechanisms, and this might play a role in the impairment of the inflammatory response.
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Affiliation(s)
- Verónica Donoso
- Pontificia Universidad Católica de Chile, Casilla 114-D, Santiago, Chile
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25
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Gomez CR, Nomellini V, Faunce DE, Kovacs EJ. Innate immunity and aging. Exp Gerontol 2008; 43:718-28. [PMID: 18586079 DOI: 10.1016/j.exger.2008.05.016] [Citation(s) in RCA: 189] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2008] [Revised: 05/27/2008] [Accepted: 05/30/2008] [Indexed: 12/16/2022]
Abstract
Advanced age is associated with defects in all of the cells of the innate immune system, including numbers, function, and early stages of activation. This review, presents the current state of the field on the impact of age on the innate immune system. The analysis of the literature suggests that a dysfunctional innate immune system is a contributing factor to aberrant outcomes after injury or infection and to the development of many of the diseases observed in the elderly. Gaining an understanding of the nature of the defects in innate immune cells may allow the development of therapeutic strategies aimed to restore innate immune function in aged individuals.
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Affiliation(s)
- Christian R Gomez
- The Burn and Shock Trauma Institute, Loyola University Medical Center, Maywood, IL 60153, USA
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Nakhai-Pour HR, Grobbee DE, Emmelot-Vonk MH, Bots ML, Verhaar HJJ, van der Schouw YT. Oral testosterone supplementation and chronic low-grade inflammation in elderly men: a 26-week randomized, placebo-controlled trial. Am Heart J 2007; 154:1228.e1-7. [PMID: 18035098 DOI: 10.1016/j.ahj.2007.09.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2007] [Accepted: 09/09/2007] [Indexed: 11/29/2022]
Abstract
BACKGROUND To determine the effect of oral testosterone supplementation on systemic low-grade inflammation measured by high-sensitive C-reactive protein (hs-CRP) in aging men with low testosterone levels. METHODS Two hundred thirty-seven men aged 60 to 80 years with a testosterone level of <13.7 nmol/L (below the 50th percentile of the population distribution) were recruited into a double-blind randomized placebo-controlled trial. Participants were randomized to either 4 capsules of 40 mg testosterone undecanoate (Andriol Testocaps, NV Organon, Oss, The Netherlands) or placebo daily for 26 weeks. Serum levels of hs-CRP were measured at baseline and at 26 weeks using a near-infrared particle immunoassay of the Synchron LX System (Beckman Coulter, Fullteron, CA). RESULTS The median baseline hs-CRP level was 1.95 mg/L (0.30-6.43) in the testosterone group compared with 1.90 mg/L (0.40-5.91) in the placebo group. After 26 weeks of testosterone supplementation therapy, the 2 intervention groups were not statistically significantly different (median hs-CRP 2.20 vs 2.00 mg/L, interquartile range 0.40-6.54 vs 0.50-5.70, P = .36). In subgroup analysis, neither baseline testosterone level, nor age, nor baseline CRP-level modified the effect of testosterone supplementation on CRP levels. CONCLUSION Oral testosterone undecanoate supplementation, in dosage of 160 mg daily for 26 weeks, does not increase hs-CRP levels in elderly men.
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Affiliation(s)
- Hamid Reza Nakhai-Pour
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands
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27
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Chehab O, Ouertani M, Chaieb K, Haouala F, Mahdouani K. Hormonal status of cortisol and dehydroepiandrosterone sulfate in an elderly Tunisian population. C R Biol 2007; 330:755-63. [PMID: 17905395 DOI: 10.1016/j.crvi.2007.08.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2007] [Revised: 07/03/2007] [Accepted: 08/02/2007] [Indexed: 10/22/2022]
Abstract
Adrenal function and aging have been the object of intense interest recently, especially as regards dehydroepiandrosterone sulfate (DHEA-S), which is of major importance, since it is distinct from cortisol and aldosterone in declining with age. In a group of healthy old Tunisians, we investigated the association between cortisol and DHEA-S, on the one hand, and age, sex, lifestyle, physical health, including the body mass index (BMI), physical activity, and smoking indicators, on the other hand. We observed that cortisol concentrations did not change with aging, while DHEA-S concentrations decrease with age in both sexes. Cortisol/DHEA-S ratio, however, increases with aging. Our results revealed that DHEA-S levels are affected neither by physical activity nor by weight. It appears also that current smoking could not affect the level of DHEA-S. Relationships were found between DHEA-S concentrations and BMI, then between DHEA-S levels and serum cholesterol, triglycerides and calcium. No modification in the morning serum cortisol was found to be associated with aging. Decrease in DHEA-S levels is, however, clearly associated with this phenomenon. High cortisol/DHEA-S ratio accelerates the occurrence of some adult diseases, such as diabetes mellitus, atherosclerosis, dementia, and osteoporosis. Generally, the adrenal insufficiency marked by a cognitive impairment, immune disorders, sexual dysfunction, and scores for depression and anxiety can be corrected by a replacement of deficient DHEA-S.
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Affiliation(s)
- Olfa Chehab
- Unité de recherche URSAM 03/UR/07-01, faculté de pharmacie de Monastir, rue Ibn-Sina, 5000 Monastir, Tunisia.
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28
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Straub RH, Besedovsky HO, Del Rey A. Warum gibt es analoge Krankheitsmechanismen bei chronisch entzündlichen Krankheiten? Wien Klin Wochenschr 2007; 119:444-54. [PMID: 17721763 DOI: 10.1007/s00508-007-0834-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2007] [Accepted: 05/22/2007] [Indexed: 12/14/2022]
Affiliation(s)
- Rainer H Straub
- Labor für Neuro/Endokrino/Immunologie, Klinik und Poliklinik für Innere Medizin I, Klinikum der Universität Regensburg, Regensburg, Germany.
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Franchini A, Ottaviani E. IL-6 immunoreactivity changes during aging in the polychaete Ophryotrocha labronica (Polychaeta: Dorvilleidae). Tissue Cell 2007; 39:27-34. [PMID: 17258255 DOI: 10.1016/j.tice.2006.11.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2006] [Revised: 10/17/2006] [Accepted: 10/23/2006] [Indexed: 11/26/2022]
Abstract
IL-6 is a pleiotropic pro-inflammatory cytokine thought to play a role in age physiology, even if its possible modulation by aging mechanisms has not been fully defined. In this paper, the morpho-functional modifications and IL-6 immunoreactivity during aging in a simple invertebrate model, Ophryotrocha labronica, are reported. The comparison between newly-hatched, juveniles, young adult and 3-month-old females showed significant differences in the nervous and genital systems. There is evidence of nerve cell loss and a decline in oocyte growth and maturation at the gonad level. Immunohistochemistry reveals a different distribution of IL-6-like molecules, and a decreased number of reactive nerve cells in the central nervous system of aged O. labronica associated to the induced morphological modifications.
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Affiliation(s)
- A Franchini
- Department of Animal Biology, University of Modena and Reggio Emilia, via Campi 213/D, Modena, Italy.
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31
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Pabello N, Lawrence D. Neuroimmunotoxicology: Modulation of neuroimmune networks by toxicants. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.cnr.2006.04.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Negrini S, Fenoglio D, Balestra P, Fravega M, Filaci G, Indiveri F. Endocrine Regulation of Suppressor Lymphocytes: Role of the Glucocorticoid-Induced TNF-Like Receptor. Ann N Y Acad Sci 2006; 1069:377-85. [PMID: 16855164 DOI: 10.1196/annals.1351.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Mechanisms responsible for peripheral immune tolerance are currently under investigation in several laboratories, in order to define the role of immune homeostasis in physiological processes and pathologic conditions, such as autoimmunity and cancer. In this context, recent studies attributed a relevant role to the glucocorticoid-induced TNFR-related gene (GITR). GITR is expressed at high levels on CD4(+)CD25(+). T regulatory (Treg) cells, but only at low levels on resting responder T lymphocytes, and is upregulated after activation. GITR triggering induces both pro- and anti-apoptotic effects through different intracellular pathways, abrogates the suppressive activity of Treg cells, and co-stimulates responder T cells. These data hint that GITR triggering overstimulates the immune system. Indeed, in vivo studies demonstrated that GITR stimulation may both induce autoimmune diseases and strengthen anti-virus and anti-tumor immune responses. Therefore, the GITR-GITRL system appears crucial in regulating immunity. Currently, the majority of studies about GITR's role on regulatory cells are focused on CD4(+)CD25(+) Treg cells, while very little is known about the importance of this molecule in other Treg subtypes. We have recently characterized a subpopulation of CD8+ T suppressor lymphocytes able to inhibit both T cell proliferation and cytotoxicity. Preliminary data show that GITR is expressed on such CD8+ T suppressor cells and that its activation by a specific antibody inhibits generation, but not function, of these cells. These early results suggest the importance of GITR in human T suppressor lymphocytes other than CD4(+)CD25(+) Treg cells.
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Affiliation(s)
- Simone Negrini
- Department of Internal Medicine (DIMI), University of Genoa, Genoa, Italy
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Mariotti M, Castiglioni S, Bernardini D, Maier JAM. Interleukin 1 alpha is a marker of endothelial cellular senescent. IMMUNITY & AGEING 2006; 3:4. [PMID: 16600025 PMCID: PMC1482715 DOI: 10.1186/1742-4933-3-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2005] [Accepted: 04/06/2006] [Indexed: 11/24/2022]
Abstract
Background The functional changes associated with endothelial senescence may be involved in human aging and age-related vascular disorders. Since the inflammatory cytokine interleukin (IL-)1 inhibits endothelial growth, we evaluated the expression of IL-1α, IL-1β and their antagonist, the IL-1 receptor antagonist (IL-1ra), in endothelial in vitro senescence and quiescence. We also examined the expression of IL-1α in human senescent and progeric fibroblasts. Results We found that the overexpression of IL-1α specifically characterizes endothelial senescence. No modulation of this cytokine was observed in endothelial quiescence and in senescent or progeric human fibroblasts. The expression of IL-1β and IL-1ra was also assessed and found not to be affected by senescence. Conclusion Our results indicate that a dysfunction of the cytokine network associates with aging and point to a specific role of IL-1α in endothelial senescence.
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Affiliation(s)
- Massimo Mariotti
- Department of Preclinical Sciences, University of Milan Medical School, Via GB Grassi, 74 Milan, Italy
| | - Sara Castiglioni
- Department of Preclinical Sciences, University of Milan Medical School, Via GB Grassi, 74 Milan, Italy
| | - Daniela Bernardini
- Department of Preclinical Sciences, University of Milan Medical School, Via GB Grassi, 74 Milan, Italy
| | - Jeanette AM Maier
- Department of Preclinical Sciences, University of Milan Medical School, Via GB Grassi, 74 Milan, Italy
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Hassinen M, Lakka TA, Komulainen P, Gylling H, Nissinen A, Rauramaa R. C-reactive protein and metabolic syndrome in elderly women: a 12-year follow-up study. Diabetes Care 2006; 29:931-2. [PMID: 16567842 DOI: 10.2337/diacare.29.04.06.dc05-2508] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Maija Hassinen
- Kuopio Research Institute of Exercise Medicine, Haapaniementie 16, FIN-70100 Kuopio, Finland.
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Sehl M, Sawhney R, Naeim A. Physiologic aspects of aging: impact on cancer management and decision making, part II. Cancer J 2006; 11:461-73. [PMID: 16393480 DOI: 10.1097/00130404-200511000-00005] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In this second article of our two-part review, we focus on age-associated physiologic changes involving the nervous, endocrine, hematologic, immune, and musculoskeletal systems, with close attention to the interconnected nature of these systems. There is a well-known connection between the neuroendocrine and immune systems via the hypothalamic-pituitary-adrenal axis and via interaction by means of cytokines, hormones, and neurotransmitters. These changes may lead to a loss of integration and resiliency with age, thus decreasing the ability of the elderly patient with cancer to adapt to stressful circumstances. Prominent changes include decline in memory and cognition, and increased susceptibility to peripheral neuropathy. Hematologic and immune changes like reduced bone marrow reserve and increased susceptibility to infections have far reaching implications for cancer care in the elderly. Gradual decline in hormone levels, and changes in muscle and body composition, can lead to functional decline and frailty. Use of the clinical interventions suggested in this article, along with an appreciation of the interplay of these age-related physiologic changes and their consequences, allows oncology professionals to customize therapy and minimize side effects in the geriatric oncology patient.
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Affiliation(s)
- Mary Sehl
- Division of Hematology-Oncology and Geriatrics, David Geffen School of Medicine, University of California, Los Angeles, California 90095-1687, USA
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Härle P, Straub RH. Neuroendocrine-immune aspects of accelerated aging in rheumatoid arthritis. Curr Rheumatol Rep 2006; 7:389-94. [PMID: 16174490 DOI: 10.1007/s11926-005-0027-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The normal process of aging brings about changes in immune function, hormonal status, overall metabolism, and enhanced occurrence of neuropsychiatric disorders. These alterations are also evident at an accelerating pace in chronic inflammatory diseases. Treatment with immunosuppressive therapeutics is often not sufficiently effective. Treating neuroendocrine-immune alterations to regain homeostasis might enhance remission inducing and maintaining effects. This paper summarizes the phenomena related to normal aging and related to chronic inflammatory disease. Furthermore, a multimodal concept is being proposed to control more effectively chronic inflammatory disease on a neuroendocrine-immune basis.
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Affiliation(s)
- Peter Härle
- Lab. Exp. Rheumatology & Neuroendocrino-Immunology, Div. of Rheumatology, Dept. of Internal Medicine I, University Hospital, 93042 Regensburg, Germany
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Rodrigues Siqueira I, Fochesatto C, da Silva Torres IL, Dalmaz C, Alexandre Netto C. Aging affects oxidative state in hippocampus, hypothalamus and adrenal glands of Wistar rats. Life Sci 2005; 78:271-8. [PMID: 16112138 DOI: 10.1016/j.lfs.2005.04.044] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2004] [Accepted: 04/20/2005] [Indexed: 11/17/2022]
Abstract
The aging process is associated with cognitive impairment and dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis, as well as with oxidative stress. We determined some parameters of oxidative stress in homogenates of hippocampus, hypothalamus and adrenal glands from male 2-, 6- and 24-months-old Wistar rats. A significant age-dependent increase in the generation of free radicals was observed in hippocampus, hypothalamus and adrenal glands, as well as on lipid peroxidation in hippocampus and hypothalamus. The glutathione peroxidase (GPx) activity was significantly reduced in hypothalamus and hippocampus from 6-months-old rats; a decline on GPx and catalase activities in adrenal glands of 24-months-old animals was also present. Interestingly, a great decrease in total antioxidant capacity was found in all tissues tested. Reported findings support the idea that oxidative events participate on multiple neuroendocrine-metabolic impairments and suggest that the oxidative stress found in hippocampus, hypothalamus and adrenals might be associated with age-related physiological deficits.
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Affiliation(s)
- Ionara Rodrigues Siqueira
- Programa de Pós-Graduação em Ciências Biológicas-Fisiologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
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38
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Puerto M, Guayerbas N, Alvarez P, De la Fuente M. Modulation of neuropeptide Y and norepinephrine on several leucocyte functions in adult, old and very old mice. J Neuroimmunol 2005; 165:33-40. [PMID: 16005734 DOI: 10.1016/j.jneuroim.2005.03.021] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2005] [Revised: 03/11/2005] [Accepted: 03/25/2005] [Indexed: 11/19/2022]
Abstract
The age-related changes in the communication between the nervous and the immune system have been scarcely investigated, especially in very aged subjects. The present work deals with the in vitro effects of norepinephrine and neuropeptide Y, separately and jointly, on functions such as lymphoproliferation, NK activity, and IL-2 and TNF-alpha release of peritoneal leucocytes from adult (24+/-2 weeks), old (72+/-2 weeks) and very old (128+/-2 weeks) mice. The old mice showed a decrease in proliferation, NK activity and IL-2 release, and an increase in TNF-alpha, whereas in the very old mice these functions were more similar to those of the adults. The effects of neurotransmitters on these functions were different depending on the age of the animals.
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Affiliation(s)
- M Puerto
- Department of Physiology (Animal Physiology II), Faculty of Biological Science, Complutense University of Madrid, Jose Antonio Novais, 2. 28040 Madrid, Spain
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Härle P, Straub RH, Wiest R, Mayer A, Schölmerich J, Atzeni F, Carrabba M, Cutolo M, Sarzi-Puttini P. Increase of sympathetic outflow measured by neuropeptide Y and decrease of the hypothalamic-pituitary-adrenal axis tone in patients with systemic lupus erythematosus and rheumatoid arthritis: another example of uncoupling of response systems. Ann Rheum Dis 2005; 65:51-6. [PMID: 15941834 PMCID: PMC1797997 DOI: 10.1136/ard.2005.038059] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To study in parallel the outflow of the sympathetic nervous system (SNS) and the hypothalamic-pituitary adrenal (HPA) axis tone in systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA). METHODS 32 patients with SLE, 62 with RA, and 65 healthy subjects (HS) were included. To measure the tone of the HPA axis, plasma ACTH and serum cortisol were determined. Serum neuropeptide Y (NPY) was used to evaluate the sympathetic outflow. RESULTS Patients with SLE had increased NPY levels in comparison with HS, irrespective of prior prednisolone treatment (p<0.001). For patients with RA, only those with prednisolone treatment had increased NPY levels in comparison with HS (p = 0.016). Daily prednisolone dose correlated positively with serum NPY in RA (R(Rank) = 0.356, p = 0.039). In contrast, plasma ACTH levels were generally decreased significantly in comparison with HS in SLE with prednisolone, and in RA with/without prednisolone. Similarly, serum cortisol levels were also decreased in SLE with/without prednisolone, and in RA with prednisolone. The NPY/ACTH ratio was increased in SLE and RA, irrespective of prior prednisolone treatment. The NPY/cortisol ratio was increased in SLE with/without prednisolone, and in RA with prednisolone. Twelve weeks' anti-TNF antibody treatment with adalimumab did not decrease NPY levels in RA, irrespective of prednisolone treatment. CONCLUSIONS An increased outflow of the SNS was shown and a decreased tone of the HPA axis in patients with SLE and RA. Low levels of cortisol in relation to SNS neurotransmitters may be proinflammatory because cooperative anti-inflammatory coupling of the two endogenous response axes is missing.
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Affiliation(s)
- P Härle
- Laboratory of Neuroendocrinoimmunology, Department of Internal Medicine I, University Hospital Regensburg, Germany
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40
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Abstract
Ageing has been associated with immunological changes (immunosenescence) that resemble those observed following chronic stress or glucocorticoid (GC) treatment. These changes include thymic involution, lower number of naïve T cells, reduced cell-mediated immunity, and poor vaccination response to new antigens. It follows that immunosenescence could be associated with changes of peripheral GC levels. Indeed, when compared with young subjects, healthy elders are more stressed and show activation of the hypothalamus-pituitary-adrenal (HPA) axis. However, both beneficial and undesirable effects of GCs ultimately depend on the target tissue sensitivity to these steroids. Recent data indicate that peripheral lymphocytes from elders respond poorly to GC treatment in vitro. The present review summarizes recent findings which suggest that immunosenescence may be closely related to both psychological distress and stress hormones. Furthermore, chronically stressed elderly subjects may be particularly at risk of stress-related pathology because of further alterations in GC-immune signalling. Finally, the neuroendocrine hypothesis of immunosenescence is finally reconsidered in which the age-related increase in the cortisol/DHEA ratio is major determinant of immunological changes observed during ageing.
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Affiliation(s)
- Moisés Evandro Bauer
- Instituto de Pesquisas Biomédicas and Faculdade de Biociências, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.
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41
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Briones AM, Salaices M, Vila E. Ageing alters the production of nitric oxide and prostanoids after IL-1beta exposure in mesenteric resistance arteries. Mech Ageing Dev 2005; 126:710-21. [PMID: 15888326 DOI: 10.1016/j.mad.2005.01.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2004] [Revised: 12/22/2004] [Accepted: 01/06/2005] [Indexed: 10/25/2022]
Abstract
We aimed to analyse age influence on the production of inflammatory mediators from inducible isoforms of nitric oxide synthase (iNOS) and cyclooxygenase (COX-2) in rat mesenteric resistance arteries (MRA). The second and/or third branches of MRA from young (3-month-old) and old (22-month-old) male Sprague-Dawley rats were incubated in culture medium with or without interleukin-1ss (IL-1ss; 10 ng/ml, 14 h). IL-1ss did not modify endothelial NOS (eNOS) expression or endothelial cell distribution. However, IL-1ss increased nitrite production and iNOS expression in endothelial and smooth muscle cells more in arteries from young than from old rats. IL-1ss also increased PGI(2) levels and COX-2 expression in the three layers of the vascular wall. Ageing did not affect COX-2 expression but did increase TXA(2) and PGF(2alpha) levels. The maximum contraction to phenylephrine was increased in arteries from old rats after IL-1ss treatment. Inhibition of iNOS and COX-2 with 1400 W and NS398, respectively, abolished the differences in phenylephrine contraction. In conclusion, IL-1ss induced an inflammatory response in MRA with associated increases in iNOS and COX-2 expression. The lower increase in nitrite production from iNOS together with a greater contractile prostanoid production in the old rats would be responsible for the increase observed in their contraction to phenylephrine after IL-1 ss treatment.
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Affiliation(s)
- Ana M Briones
- Dpt. Farmacologia, Terapeutica i Toxicologia, Facultat de Medicina, Universitat Autònoma de Barcelona, Bellaterra, Spain
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42
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Pérez-Alvarez L, Baeza I, Arranz L, Marco EM, Borcel E, Guaza C, Viveros MP, De la Fuente M. Behavioral, endocrine and immunological characteristics of a murine model of premature aging. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2005; 29:965-76. [PMID: 15935474 DOI: 10.1016/j.dci.2005.02.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2004] [Revised: 02/10/2005] [Accepted: 02/21/2005] [Indexed: 05/02/2023]
Abstract
We have previously shown that differences in life span among members of Swiss mouse populations appear to be related to their exploration of a T-maze, with a slow exploration ('slow mice') being linked to alteration of spontaneous behavior and monoaminergic systems, impaired immune function and shorter life span. In general these traits resemble some of the characteristics of chronologically old animals. Thus, we proposed the 'slow mice' as a model of prematurely aging mice (PAM). Now, we have compared female PAM with non-prematurely aging mice (NPAM) as regards a number of behavioral, endocrine and immunological parameters which were studied under both basal and stress conditions. In the present study the animals were chronologically younger than those used in our previous work. When compared to NPAM, the PAM showed increased anxiogenic-like responses in the plus-maze, increased basal corticosterone levels and decreased corticosterone responses to stress. The PAM also showed a decreased natural killer activity as well as decreased lymphoproliferative responses to mitogens. Moreover, the mitogen-induced lymphoproliferative responses of the PAM appeared to be more susceptible to stress. The data indicate that certain characteristics of the PAM are already present in animals of very young chronological age and provide new information for a more complete characterization of the PAM from a neuroimmunoendocrine viewpoint.
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Affiliation(s)
- Laura Pérez-Alvarez
- Departamento de Fisiología (Fisiología Animal II), Facultad de Ciencias Biológicas, Universidad Complutense, Ciudad Universitaria, C/ Jose Antonio Novais, 2, 28040 Madrid, Spain
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Vasto S, Caruso C. Immunity & Ageing: a new journal looking at ageing from an immunological point of view. IMMUNITY & AGEING 2004; 1:1. [PMID: 15679921 PMCID: PMC544954 DOI: 10.1186/1742-4933-1-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/29/2004] [Accepted: 10/29/2004] [Indexed: 11/21/2022]
Abstract
In the elderly, many alterations of both innate and clonotypic immunity have been described. Alterations to the immune system in the elderly are generally viewed as a deterioration of immunity, leading to the use of the term immunosenescence. However, although many immunological parameters are often notably reduced in the elderly, retained function of both innate and clonotypic immunity in the elderly is tightly correlated to health status. Recognising the important role of the immune system in ageing, over the last few years, journals oriented towards gerontology and geriatric sciences have increasingly published articles dealing with the immunology of ageing, but a specialised journal in this area does not exist. Immunity & Ageing is a new Open Access, peer reviewed journal that aims to cover all the topics dealing with innate and clonotypic immunity which are relevant to ageing. The journal will provide an opportunity to focus on this topic, which is emerging as one of the critical mechanisms of ageing. Furthermore, as an online, Open Access journal, Immunity & Ageing will promote immediate accessibility to research, which is generally not possible for articles published in printed journals. We hope this forum, concentrating on the themes of ageing and immunology with a strong focus on human studies, will create a new perspective for viewing a world that is inevitably becoming older.
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Affiliation(s)
- Sonya Vasto
- Managing Editor Gruppo di Studio sull'Immunosenescenza, Dipartimento di Biopatologia e Metodologie Biomediche, Università di Palermo, Corso Tukory 211, 90134 Palermo, Italy
| | - Calogero Caruso
- Editor-in-Chief Dipartimento di Biopatologia e Metodologie Biomediche, Università di Palermo, Corso Tukory 211, 90134 Palermo, Italy
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van Boxtel MPJ, Menheere PPCA, Bekers O, Hogervorst E, Jolles J. Thyroid function, depressed mood, and cognitive performance in older individuals: the Maastricht Aging Study. Psychoneuroendocrinology 2004; 29:891-8. [PMID: 15177704 DOI: 10.1016/j.psyneuen.2003.08.002] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2002] [Revised: 06/30/2003] [Accepted: 08/10/2003] [Indexed: 11/19/2022]
Abstract
The hypothesis was tested that thyroid function, as indicated by serum thyroid-stimulating hormone (TSH) level, is associated with cognitive performance in a healthy aging population. In a random sample of 120 participants recruited from the Maastricht Aging Study (MAAS), aged between 49 and 71 years, we assessed TSH level, mood state (Symptom Check List, subscale depression), and three domains of cognitive function: verbal memory, general sensorimotor speed, and complex flexibility. After correction for age, sex, and educational level, a negative association between TSH and memory function was apparent: higher levels of TSH predicted lower levels of memory performance. Exclusion of individuals with TSH levels suspect for thyroid disorder (n=2) or who were on thyroid replacement (n=3) attenuated this association. Furthermore, additional control for mood status reduced the association below the significance level. No interaction between age and TSH on cognition was found, which indicated that the TSH-memory association was independent of age group level. We conclude that the association between TSH level and memory performance was small and dependent on mood status and the presence of (possible) thyroid disease in this relatively healthy population based sample. Prospective studies are needed to address the role of thyroid function in age-related cognitive decline.
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Affiliation(s)
- M P J van Boxtel
- European Graduate School of Neuroscience (EURON), Department of Psychiatry and Neuropsychology, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands.
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45
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Abstract
Immunosenescence is defined as the state of dysregulated immune function that contributes to the increased susceptibility to infection, cancer and autoimmune diseases observed in old organisms, including humans. However, dysregulations in the immune functions are normally counterbalanced by continuous adaptation of the body to the deteriorations that occur over time. These adaptive changes are likely to occur in healthy human centenarians. Both innate (natural) and adaptive (acquired) immune responses decline with advancing age. Natural killer (NK) and natural killer T (NKT) cells represent the best model to describe innate and adaptive immune response in aging. NK and NKT cell cytotoxicity decreases in aging as well as interferon-gamma (IFN-gamma) production by both activated cell types. Their innate and acquired immune responses are preserved in very old age. However, NKT cells bearing T-cell receptor (TCR) gammadelta also display an increased cytotoxicity and IFN-gamma production in very old age. This fact suggests that NKT cells bearing TCRgammadelta are more involved in maintaining innate and adaptive immune response in aging leading to successful aging. The role played by the neuroendocrine-immune network and by nutritional factors, such as zinc, in maintaining NK and NKT cell functions in aging is discussed.
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MESH Headings
- Aging/immunology
- Aging/physiology
- Animals
- Cytokines/metabolism
- Cytokines/physiology
- Humans
- Immunity, Cellular/immunology
- Immunity, Cellular/physiology
- Immunity, Innate/immunology
- Immunity, Innate/physiology
- Killer Cells, Natural/immunology
- Killer Cells, Natural/metabolism
- Killer Cells, Natural/physiology
- Lymphocyte Subsets/immunology
- Lymphocyte Subsets/metabolism
- Lymphocyte Subsets/physiology
- Models, Immunological
- Receptors, Antigen, T-Cell/physiology
- T-Lymphocyte Subsets/immunology
- T-Lymphocyte Subsets/metabolism
- T-Lymphocyte Subsets/physiology
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- T-Lymphocytes/physiology
- Zinc/metabolism
- Zinc/physiology
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Affiliation(s)
- Eugenio Mocchegiani
- Section Nutrition, Immunity and Aging, Immunology Centre, Research Department INRCA, 60121, Ancona, Italy.
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Hannestad J, Monjil DF, Díaz-Esnal B, Cobo J, Vega JA. Age-dependent changes in the nervous and endocrine control of the thymus. Microsc Res Tech 2004; 63:94-101. [PMID: 14722906 DOI: 10.1002/jemt.20014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The immune system, especially the thymus, undergoes age-related modifications leading to structural and functional changes in the lymphoid organs and immunocompetent cells. Nevertheless, the consequences of thymic involution in the peripheral pool of T-cells are still a matter of controversy. The control of the thymic function is very complex and involves intrathymic signals, the autonomic nervous system, and the endocrine system. Both thymocytes and thymic stromal cells express receptors for a wide range of hormones, as well as for neurotransmitters and neuropeptides, thus affecting thymocytes maturation. This review summarizes the age-dependent variations in the extrathymic components of the thymic microenvironment, i.e., vegetative nerves and hormones, and the possible effects of those changes in the immune function.
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Affiliation(s)
- Jonas Hannestad
- Department of Psychiatry, Duke University, Durham, North Carolina 27710, USA
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Straub RH, Schölmerich J, Cutolo M. The multiple facets of premature aging in rheumatoid arthritis. ACTA ACUST UNITED AC 2003; 48:2713-21. [PMID: 14558074 DOI: 10.1002/art.11290] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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48
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García-Suárez O, Vega JA. Introduction to the aging of primary lymphoid organs: Cellular or homeostatic failure? Microsc Res Tech 2003; 62:461-3. [PMID: 14635138 DOI: 10.1002/jemt.10407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- O García-Suárez
- Dipartimento di Morfologia, Biochimica, Fisiologia e Produzioni Animali, Università di Messina, Italy
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Csiszar A, Ungvari Z, Koller A, Edwards JG, Kaley G. Aging-induced proinflammatory shift in cytokine expression profile in coronary arteries. FASEB J 2003; 17:1183-5. [PMID: 12709402 DOI: 10.1096/fj.02-1049fje] [Citation(s) in RCA: 215] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The phenotypic and functional changes of coronary arteries with aging promote ischemic heart disease. We hypothesized that these alterations reflect an aging-induced proinflammatory shift in vascular regulatory mechanisms. Thus, in isolated coronary arteries of young (3-month-old) and aged (25-month-old) male Fischer 344 rats the expression of 96 cytokines, chemokines, and their receptors were screened by a cDNA-based microarray technique. In aged vessels expressions of tumor necrosis factor (TNF)-alpha (3.3x), interleukin (IL)-1beta (3.0x), IL-6 (2.9x), IL-6Ralpha (2.8x) and IL-17 (6.1x) genes were significantly increased over young vessels. Quantitative reverse transcriptase-polymerase chain reaction confirmed these results. Western blotting demonstrated that protein expressions of TNF-alpha, IL-1beta, IL-6, and IL-17 were also significantly increased in vessels of aged rats compared with those of young rats. Immunofluorescent double labeling showed that in aged vessels IL-1beta and IL-6 are predominantly localized in the endothelium, whereas TNF-alpha and IL-17 are localized in smooth muscle. Thus, a proinflammatory shift in the profile of vascular cytokine expression may contribute to the aging-induced phenotypic changes in coronary arteries, promoting the development of ischemic heart disease in the elderly.
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Affiliation(s)
- Anna Csiszar
- Department of Physiology, New York Medical College, Valhalla, NY 10595, USA
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50
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Holmlund U, Höglind A, Larsson AK, Nilsson C, Sverremark Ekström E. CD14 and development of atopic disease at 2 years of age in children with atopic or non-atopic mothers. Clin Exp Allergy 2003; 33:455-63. [PMID: 12680860 DOI: 10.1046/j.1365-2222.2003.01629.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND CD14, a myeloid cell marker and LPS receptor has been acclaimed to play a role in development and manifestation of atopic allergy, as the gene encoding CD14 is located in a chromosomal region linked to total IgE levels and atopic disease. OBJECTIVE To investigate the levels of soluble (s) and membrane bound (m) CD14 in cord blood and at 2 years of age from children with atopic or non-atopic mothers and relate these parameters to atopy development at 2 years of age. METHODS Blood samples were collected at delivery (cord blood) and at 2 years of age among infants with atopic (n = 41) and non-atopic (n = 32) mothers. Blood samples were also obtained from mothers at the same occasions. Levels of sCD14 and total IgE were measured in plasma, and percentages of CD14+ cells were measured in cord and peripheral blood mononuclear cells. RESULTS We observed significant differences in sCD14 levels in cord blood, where children with atopic mothers had the highest levels. The same pattern could be observed in the mothers at delivery. At 2 years of age no significant differences in sCD14 levels were observed between children with atopic mothers and children with non-atopic mothers and no association between sCD14 and atopic disease was found. Further, we observed large differences in sCD14 and mCD14 with respect to age, where newborns displayed a higher frequency of CD14+ cells compared with the 2-year-olds and the mothers. The reverse was observed for sCD14, with significantly lower values in cord blood than those seen in the 2-year-olds and mothers. CONCLUSION Based on our findings, we suggest that CD14 could be involved in the regulation of IgE production, but that it might also be important for the maturation and development of the neonatal immune system.
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Affiliation(s)
- U Holmlund
- Department of Medicine, Karolinska Hospital and Institutet, Stockholm, Sweden.
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