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McCrory C, McLoughlin S, Layte R, NiCheallaigh C, O'Halloran AM, Barros H, Berkman LF, Bochud M, M Crimmins E, T Farrell M, Fraga S, Grundy E, Kelly-Irving M, Petrovic D, Seeman T, Stringhini S, Vollenveider P, Kenny RA. Towards a consensus definition of allostatic load: a multi-cohort, multi-system, multi-biomarker individual participant data (IPD) meta-analysis. Psychoneuroendocrinology 2023; 153:106117. [PMID: 37100008 PMCID: PMC10620736 DOI: 10.1016/j.psyneuen.2023.106117] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 03/16/2023] [Accepted: 04/16/2023] [Indexed: 04/28/2023]
Abstract
BACKGROUND Allostatic load (AL) is a multi-system composite index for quantifying physiological dysregulation caused by life course stressors. For over 30 years, an extensive body of research has drawn on the AL framework but has been hampered by the lack of a consistent definition. METHODS This study analyses data for 67,126 individuals aged 40-111 years participating in 13 different cohort studies and 40 biomarkers across 12 physiological systems: hypothalamic-pituitary-adrenal (HPA) axis, sympathetic-adrenal-medullary (SAM) axis, parasympathetic nervous system functioning, oxidative stress, immunological/inflammatory, cardiovascular, respiratory, lipidemia, anthropometric, glucose metabolism, kidney, and liver. We use individual-participant-data meta-analysis and exploit natural heterogeneity in the number and type of biomarkers that have been used across studies, but a common set of health outcomes (grip strength, walking speed, and self-rated health), to determine the optimal configuration of parameters to define the concept. RESULTS There was at least one biomarker within 9/12 physiological systems that was reliably and consistently associated in the hypothesised direction with the three health outcomes in the meta-analysis of these cohorts: dehydroepiandrosterone sulfate (DHEAS), low frequency-heart rate variability (LF-HRV), C-reactive protein (CRP), resting heart rate (RHR), peak expiratory flow (PEF), high density lipoprotein cholesterol (HDL-C), waist-to-height ratio (WtHR), HbA1c, and cystatin C. An index based on five biomarkers (CRP, RHR, HDL-C, WtHR and HbA1c) available in every study was found to predict an independent outcome - mortality - as well or better than more elaborate sets of biomarkers. DISCUSSION This study has identified a brief 5-item measure of AL that arguably represents a universal and efficient set of biomarkers for capturing physiological 'wear and tear' and a further biomarker (PEF) that could usefully be included in future data collection.
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Affiliation(s)
- Cathal McCrory
- The Irish Longitudinal Study on Ageing, Department of Medical Gerontology, School of Medicine, Trinity College Dublin, Ireland.
| | - Sinead McLoughlin
- The Irish Longitudinal Study on Ageing, Department of Medical Gerontology, School of Medicine, Trinity College Dublin, Ireland
| | - Richard Layte
- Department of Sociology, Trinity College Dublin, Ireland
| | - Cliona NiCheallaigh
- Department of Clinical Medicine, Trinity College Dublin and St James's Hospital, Ireland
| | - Aisling M O'Halloran
- The Irish Longitudinal Study on Ageing, Department of Medical Gerontology, School of Medicine, Trinity College Dublin, Ireland
| | - Henrique Barros
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal, Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Porto, Portugal
| | - Lisa F Berkman
- Harvard Center for Population and Development Studies, Harvard. T.H. Chan School of Public Health, 9 Bow Street, Cambridge, MA 02138, USA
| | - Murielle Bochud
- Center for Primary Care and Public Health (Unisanté), Department of Epidemiology and Health Systems, University of Lausanne, Route de la Corniche 10, 1010 Lausanne, Switzerland
| | | | - Meagan T Farrell
- Harvard Center for Population and Development Studies, Harvard. T.H. Chan School of Public Health, 9 Bow Street, Cambridge, MA 02138, USA
| | - Silvia Fraga
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal, Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Porto, Portugal
| | - Emily Grundy
- Institute for Social & Economic Research, University of Essex, UK and Centre for Fertility and Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Michelle Kelly-Irving
- Centre for Epidemiology and Research in Population Health (CERPOP), Université de Toulouse, Inserm-Université Paul Sabatier, Toulouse, France
| | - Dusan Petrovic
- Center for Primary Care and Public Health (Unisanté), Department of Epidemiology and Health Systems, University of Lausanne, Route de la Corniche 10, 1010 Lausanne, Switzerland
| | - Teresa Seeman
- David Geffen School of Medicine, UCLA, Los Angeles, CA 90095, USA
| | - Silvia Stringhini
- Center for Primary Care and Public Health (Unisanté), Department of Epidemiology and Health Systems, University of Lausanne, Route de la Corniche 10, 1010 Lausanne, Switzerland; Unit of Population Epidemiology, Division of Primary Care, Geneva University Hospital, Faculty of Medicine, University of Geneva, Switzerland
| | - Peter Vollenveider
- Department of Medicine, Internal Medicine, Lausanne University Hospital, Lausanne, Switzerland, University of Lausanne, Lausanne, Switzerland
| | - Rose Anne Kenny
- The Irish Longitudinal Study on Ageing, Department of Medical Gerontology, School of Medicine, Trinity College Dublin, Ireland
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Parthymou A, Habeos EE, Habeos GI, Deligakis A, Livieratos E, Marangos M, Chartoumpekis DV. Factors associated with anti-SARS-CoV-2 antibody titres 3 months post-vaccination with the second dose of BNT162b2 vaccine: a longitudinal observational cohort study in western Greece. BMJ Open 2022; 12:e057084. [PMID: 35589363 PMCID: PMC9121112 DOI: 10.1136/bmjopen-2021-057084] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVES Vaccination against SARS-CoV-2 has been extensively deployed during COVID-19 pandemic. One efficient method to evaluate response to vaccination is the assessment of humoral immunity by measuring SARS-CoV-2 antibody titres. We investigated the association between anthropometric parameters (age, body mass index), smoking, diabetes, statin use, hypertension, levels of 25(OH)D and dehydroepiandrosterone sulfate (DHEAS), and SARS-CoV-2 antibody titres after vaccination. DESIGN In this longitudinal observational cohort study, 712 subjects were tested for SARS-CoV-2 antibodies 3 months after the second dose of BNT162b2 vaccine. Multiple linear regression analysis was performed to identify which factors are associated with the antibody titres. SETTING Healthcare units of western Greece (University Hospital of Patras and "St Andrews" State General Hospital of Patras). PARTICIPANTS All adults receiving their second dose of BNT162b2 vaccine at the participating healthcare units were eligible to participate in the study. Exclusion criteria were SARS-CoV-2 infection or positive SARS-CoV-2 antibody titre at baseline. Patients who did not provide all necessary information were excluded from our analyses. RESULTS We found age to be negatively associated with antibody titre (-0.005; 95% CI -0.009 to -0.001, p=0.0073), as was male gender (-0.11; 95% CI -0.1738 to -0.04617, p=0.0008). The interaction of age and gender was significant (-0.01090; 95% CI -0.01631 to -0.005490, p<0.0001), highlighting that the rate of decline in antibody titre with increasing age tends to be higher in men rather than in women. No linear trend was found between DHEAS levels and antibody titres when the lower quartile of DHEAS levels was used as reference. Tobacco use was associated with low antibody titre (-0.1097; 95% CI -0.174 to -0.046, p=0.0008) but overweight, obese or underweight subjects had similar antibody responses to normal-weight individuals. Although subjects with diabetes and hypertension had numerically lower antibody titres, this association was not statistically significant. Vitamin D levels showed no clear relationships with antibody titres. CONCLUSIONS Age, male gender and tobacco use are negatively associated with antibody titres after COVID-19 vaccination, but our data showed no clear correlation with vitamin D levels. TRIAL REGISTRATION NUMBER NCT04954651; Results.
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Affiliation(s)
- Anastasia Parthymou
- Division of Endocrinology, Department of Internal Medicine, University of Patras, Patras, Greece
| | - Evagelia E Habeos
- Division of Endocrinology, Department of Internal Medicine, University of Patras, Patras, Greece
| | - George I Habeos
- Division of Endocrinology, Department of Internal Medicine, University of Patras, Patras, Greece
| | | | - Ektoras Livieratos
- Division of Endocrinology, Department of Internal Medicine, University of Patras, Patras, Greece
| | - Markos Marangos
- Division of Endocrinology, Department of Internal Medicine, University of Patras, Patras, Greece
- Division of Infectious Diseases, Department of Internal Medicine, University of Patras, Patras, Greece
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Rachakatla A, Kalashikam RR. Calorie Restriction-Regulated Molecular Pathways and Its Impact on Various Age Groups: An Overview. DNA Cell Biol 2022; 41:459-468. [PMID: 35451872 DOI: 10.1089/dna.2021.0922] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Calorie restriction (CR) if planned properly with regular exercise at different ages can result in healthy weight loss. CR can also have different beneficial effects on improving lifespan and decreasing the age-associated diseases by regulating physiological, biochemical, and molecular markers. The different pathways regulated by CR include:(1) AMP-activated protein kinase (AMPK), which involves PGC-1α, SIRT1, and SIRT3. AMPK also effects myocyte enhancer factor 2 (MEF2), peroxisome proliferator-activated receptor delta, and peroxisome proliferator-activated receptor alpha, which are involved in mitochondrial biogenesis and lipid oxidation; (2) Forkhead box transcription factor's signaling is related to the DNA repair, lipid metabolism, protection of protein structure, autophagy, and resistance to oxidative stress; (3) Mammalian target of rapamycin (mTOR) signaling, which involves key factors, such as S6 protein kinase-1 (S6K1), mTOR complex-1 (mTORC1), and 4E-binding protein (4E-BP). Under CR conditions, AMPK activation and mTOR inhibition helps in the activation of Ulk1 complex along with the acetyltransferase Mec-17, which is necessary for autophagy; (4) Insulin-like growth factor-1 (IGF-1) pathway downregulation protects against cancer and slows the aging process; (5) Nuclear factor kappa B pathway downregulation decreases the inflammation; and (6) c-Jun N-terminal kinase and p38 kinase regulation as a response to the stress. The acute and chronic CR both shows antidepression and anxiolytic action by effecting ghrelin/GHS-R1a signaling. CR also regulates GSK3β kinase and protects against age-related brain atrophy. CR at young age may show many deleterious effects by effecting different mechanisms. Parental CR before or during conception will also affect the health and development of the offspring by causing many epigenetic modifications that show transgenerational transmission. Maternal CR is associated with intrauterine growth retardation effecting the offspring in their adulthood by developing different metabolic syndromes. The epigenetic changes with response to paternal food supply also linked to offspring health. CR at middle and old age provides a significant preventive impact against the development of age-associated diseases.
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Chiu HF, Lee HJ, Han YC, Venkatakrishnan K, Golovinskaia O, Wang CK. Beneficial effect of Chlorella pyrenoidosa drink on healthy subjects: A randomized, placebo-controlled, double-blind, cross-over clinical trial. J Food Biochem 2021; 45:e13665. [PMID: 33755227 DOI: 10.1111/jfbc.13665] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/19/2021] [Accepted: 02/04/2021] [Indexed: 12/28/2022]
Abstract
The current study aims to explore the anti-inflammatory activity of Chlorella pyrenoidosa on RAW 267.4 cells and followed by a cross-over clinical trial in healthy subjects to check the antioxidant and anti-aging properties of Chlorella water extract (CWE). For the clinical trial, 44 healthy subjects were requested to consume 27 ml of either placebo or CWE for 90 days (phase I) and vice-versa manner for 90 days (phase II) with 4 weeks of washout period. The RAW 264.7 macrophages treated with Chlorella display potent anti-inflammatory activity by significantly downregulating (p < .05) the protein expressions of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). Whereas, the subjects supplemented with CWE showed improved (p < .05) antioxidant status (TEAC, SOD, CAT, and DHEAs) and lower (p < .05) oxidative stress/aging markers (TBARS and 8-OHdG) as well as considerably (p < .05) protected liver (by lowering GOT and GPT). Thus, consumption of chlorella could significantly improve the overall health status by suppressing various oxidative stress markers and aging stress markers. PRACTICAL APPLICATIONS: Chlorella is considered as a popular functional food owing to its rich nutrient value and its array of biological activities. Numerous studies indicated that treatment with Chlorella spp. would considerably lower oxidative stress, inflammation, and regulate immune response which might contribute to anti-aging property in various cell and animal models. Based on the above information, we expected that Chlorella would be a better contender for the development of a novel anti-aging agent. Hence, we designed this clinical trial to assess the beneficial effects of Chlorella pyrenoidosa especially anti-aging. In agreement with our hypothesis, our results also showed that subjected supplemented with Chlorella water extract could significantly improve overall health status by suppressing various oxidative stress markers and aging stress markers. Hence, Chlorella could be developed into a novel anti-aging agent. In the future, it can be prescribed with standard anti-aging agents to improve the overall health status of the elderly population. However, large-scale clinical studies are needed to confirm our statements.
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Affiliation(s)
- Hui-Fang Chiu
- Department of Chinese Medicine, Taichung Hospital, Ministry of Health and Well-Being, Taichung, Taiwan, ROC
| | - Hsiao-Ju Lee
- School of Nutrition, Chung Shan Medical University, Taichung City, Taiwan, ROC
| | - Yi-Chun Han
- School of Nutrition, Chung Shan Medical University, Taichung City, Taiwan, ROC
| | | | | | - Chin-Kun Wang
- School of Nutrition, Chung Shan Medical University, Taichung City, Taiwan, ROC
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Epelbaum J, Terrien J. Mini-review: Aging of the neuroendocrine system: Insights from nonhuman primate models. Prog Neuropsychopharmacol Biol Psychiatry 2020; 100:109854. [PMID: 31891735 DOI: 10.1016/j.pnpbp.2019.109854] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 12/27/2019] [Indexed: 01/29/2023]
Abstract
The neuroendocrine system (NES) plays a crucial role in synchronizing the physiology and behavior of the whole organism in response to environmental constraints. The NES consists of a hypothalamic-pituitary-target organ axis that acts in coordination to regulate growth, reproduction, stress and basal metabolism. The growth (or somatotropic), hypothalamic-pituitary-gonadal (HPG), hypothalamic-pituitary-adrenal (HPA) and hypothalamic-pituitary-thyroid (HPT) axes are therefore finely tuned by the hypothalamus through the successive release of hypothalamic and pituitary hormones to control the downstream physiological functions. These functions rely on a complex set of mechanisms requiring tight synchronization between peripheral organs and the hypothalamic-pituitary complex, whose functionality can be altered during aging. Here, we review the results of research on the effects of aging on the NES of nonhuman primate (NHP) species in wild and captive conditions. A focus on the age-related dysregulation of the master circadian pacemaker, which, in turn, alters the synchronization of the NES with the organism environment, is proposed. Finally, practical and ethical considerations of using NHP models to test the effects of nutrition-based or hormonal treatments to combat the deterioration of the NES are discussed.
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Affiliation(s)
- Jacques Epelbaum
- UMR CNRS/MNHN 7179, Mécanismes Adaptatifs et Evolution, 1 Avenue du Petit Château, 91800 Brunoy, France; Unité Mixte de Recherche en Santé 894 INSERM, Centre de Psychiatrie et Neurosciences, Université Paris Descartes, Sorbonne Paris Cité, 75014 Paris, France
| | - Jérémy Terrien
- UMR CNRS/MNHN 7179, Mécanismes Adaptatifs et Evolution, 1 Avenue du Petit Château, 91800 Brunoy, France.
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Karametos I, Tsiboli P, Togousidis I, Hatzoglou C, Giamouzis G, Gourgoulianis KI. Chronic Obstructive Pulmonary Disease as a Main Factor of Premature Aging. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E540. [PMID: 30781849 PMCID: PMC6406938 DOI: 10.3390/ijerph16040540] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 02/01/2019] [Accepted: 02/08/2019] [Indexed: 02/04/2023]
Abstract
(1) Background: Chronic obstructive pulmonary disease (COPD) is defined as an inflammatory disorder that presents an increasingly prevalent health problem. Accelerated aging has been examined as a pathologic mechanism of many chronic diseases like COPD. We examined whether COPD is combined with accelerated aging, studying two hormones, dehydroepiandrosterone (DHEA) and growth hormone (GH), known to be characteristic biological markers of aging. (2) Methods: Data were collected from 119 participants, 70 (58.8%) COPD patients and 49 (41.2%) from a health control group over the period of 2014⁻2016 in a spirometry program. Information about their medical history, tobacco use, and blood tests was obtained. (3) Results: The average age of the health control patients was 73.5 years (SD = 5.5), and that of the COPD patients was 75.4 years (SD = 6.9). Both groups were similar in age and sex. A greater proportion of smokers were found in the COPD group (87.1%) versus the control group (36.7%). The majority of COPD patients were classified as STAGE II (51.4%) and STAGE III (37.1%) according to GOLD (Global Initiative for Chronic Obstructive Pulmonary Disease). Levels of DHEA (SD = 17.1) and GH (SD = 0.37) were significantly lower in the COPD group (p < 0.001) compared to those in the controls (SD = 26.3, SD = 0.79). DHEA and GH were more significant and negatively correlated with age. The regression equation of DHEA with age produced a coefficient equal to 1.26. In this study, the difference in DHEA between COPD patients and controls was, on average, 30.2 μg/dL, indicating that the biological age of a COPD patient is on average about 24 years older than that of a control subject of the same age. Similarly, the difference in GH between COPD patients and controls was, on average, 0.42 ng/mL, indicating that the biological age of a COPD patient is on average about 13.1 years older than that of a control subject of the same age. (4) Conclusions: The findings of our study strongly suggest the presence of premature biological aging in COPD patients. Their biological age could actually vary from 13 to 23 years older than non-COPD controls according to DHEA and GH variation.
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Affiliation(s)
- Ilias Karametos
- Internal Medicine Department, Hospital of Volos, 38221 Magnesia, Greece.
| | - Paraskevi Tsiboli
- Biochemichal Laboratory Department, Hospital of Volos, 38221 Magnesia, Greece.
| | - Ilias Togousidis
- Biochemichal Laboratory Department, Hospital of Volos, 38221 Magnesia, Greece.
| | - Chrisi Hatzoglou
- Department of Medical Physiology, University of Thessaly Medical School, 41500 Larissa, Greece.
| | - Grigorios Giamouzis
- Department of Cardiology, University of Thessaly Medical School, 41110 Larissa, Greece.
| | - Konstantinos I Gourgoulianis
- Respiratory Medicine Department, University of Thessaly Medical School, University Hospital of Larisa, 41110 Larissa, Greece.
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7
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Zhao Z, Gong W, Liu L, Wang M, Tang Z, Mohammadtursun N, Lu L, Liu J, Li M, Lv Y, Mo S, Ma W, Dong J. Urinary 8-hydroxydeoxyguanosine is a better biomarker of aging in non-smokers. TRADITIONAL MEDICINE AND MODERN MEDICINE 2018. [DOI: 10.1142/s2575900018500039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Objective: The aim of this study is finding an optimal and convenient aging marker. Method: The information of participants’ occupation, family background, life style, physical condition, etc. was obtained by a self-administered questionnaire. Spot urine and saliva samples were collected during the early morning after fasting overnight. 8-hydroxydeoxygunaosine (8-OHdG), 8-iso-prostaglandin F2[Formula: see text] (8-isoPGF2[Formula: see text]), advanced oxidation protein products (AOPPs), malondialdehyde (MDA), and dehydroepian drosterone sulfate (DHEA-S) were measured by ELISA. Results: Around 112 non-smokers (males/females [Formula: see text] 61/51; mean age [Formula: see text] 44.9 years) were eligible and analyzed in this study. The mean urinary 8-OHdG level was [Formula: see text] (ng/mmol, creatinine) and mean 8-isoPGF2[Formula: see text] level was [Formula: see text] (pg/mmoL, creatinine). In saliva, the mean level of AOPPs, MDA, and DHEA-S was [Formula: see text] ([Formula: see text]mol/L), [Formula: see text] ([Formula: see text]mol/L) and [Formula: see text] (ng/mL), respectively. After analysis in multiple regression model, urinary 8-OHdG was influenced by age and tea consumption ([Formula: see text]); urinary 8-isoPGF2[Formula: see text] level was correlated with gender ([Formula: see text]); salivary DHEA-S was related to gender ([Formula: see text]) and marital status ([Formula: see text]); AOPPs and MDA in saliva presented no relationships with those factors. Conclusion: Among healthy non-smokers, urinary 8-OHdG is the best aging biomarker comparing to other markers.
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Affiliation(s)
- Zhengxiao Zhao
- Institute of Integrated Traditional Chinese and Western Medicine, Huashan Hospital, Fudan University, Shanghai, P. R. China
- Institutes of Integrative Medicine, Fudan University, Shanghai, P. R. China
| | - Weiyi Gong
- Institute of Integrated Traditional Chinese and Western Medicine, Huashan Hospital, Fudan University, Shanghai, P. R. China
- Institutes of Integrative Medicine, Fudan University, Shanghai, P. R. China
| | - Lumei Liu
- Institute of Integrated Traditional Chinese and Western Medicine, Huashan Hospital, Fudan University, Shanghai, P. R. China
- Institutes of Integrative Medicine, Fudan University, Shanghai, P. R. China
| | - Meng Wang
- Physical Examination Center, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - Zihui Tang
- Institute of Integrated Traditional Chinese and Western Medicine, Huashan Hospital, Fudan University, Shanghai, P. R. China
- Institutes of Integrative Medicine, Fudan University, Shanghai, P. R. China
| | - Nabijan Mohammadtursun
- Institute of Integrated Traditional Chinese and Western Medicine, Huashan Hospital, Fudan University, Shanghai, P. R. China
- Institutes of Integrative Medicine, Fudan University, Shanghai, P. R. China
| | - Linwei Lu
- Institute of Integrated Traditional Chinese and Western Medicine, Huashan Hospital, Fudan University, Shanghai, P. R. China
- Institutes of Integrative Medicine, Fudan University, Shanghai, P. R. China
| | - Jiaqi Liu
- Institute of Integrated Traditional Chinese and Western Medicine, Huashan Hospital, Fudan University, Shanghai, P. R. China
- Institutes of Integrative Medicine, Fudan University, Shanghai, P. R. China
| | - Mihui Li
- Institute of Integrated Traditional Chinese and Western Medicine, Huashan Hospital, Fudan University, Shanghai, P. R. China
- Institutes of Integrative Medicine, Fudan University, Shanghai, P. R. China
| | - Yibao Lv
- Institute of Integrated Traditional Chinese and Western Medicine, Huashan Hospital, Fudan University, Shanghai, P. R. China
- Institutes of Integrative Medicine, Fudan University, Shanghai, P. R. China
| | - Shuming Mo
- Institute of Integrated Traditional Chinese and Western Medicine, Huashan Hospital, Fudan University, Shanghai, P. R. China
- Institutes of Integrative Medicine, Fudan University, Shanghai, P. R. China
| | - Wenjuan Ma
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - Jingcheng Dong
- Institute of Integrated Traditional Chinese and Western Medicine, Huashan Hospital, Fudan University, Shanghai, P. R. China
- Institutes of Integrative Medicine, Fudan University, Shanghai, P. R. China
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8
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Nishizawa K, Nakanishi T, Tamai I. Comparative Evaluation of Dehydroepiandrosterone Sulfate Potential to Predict Hepatic Organic Anion Transporting Polypeptide Transporter-Based Drug-Drug Interactions. Drug Metab Dispos 2016; 45:224-227. [PMID: 27934638 DOI: 10.1124/dmd.116.072355] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 11/30/2016] [Indexed: 12/19/2022] Open
Abstract
Pharmacokinetic drug-drug interactions (DDIs) on hepatic organic anion transporting polypeptides (OATPs) are important clinical issues. Previously, we reported that plasma dehydroepiandrosterone sulfate (DHEAS) could serve as an endogenous probe to predict OATP-based DDIs in monkeys using rifampicin as an OATP inhibitor. Since the contribution of hepatic OATPs to the changes in plasma DHEAS by rifampicin remains unclear, however, we performed an in vivo pharmacokinetic study to explore this issue. Since plasma DHEAS concentrations were low in our rat model, the disposition of externally administered DHEAS was evaluated. Intravenously administered DHEAS was recovered mainly in bile (29.1%) and less in urine (2.95%). The liver tissue-to-plasma concentration ratio (Kpliver) decreased from 41.8 to 5.07 by rifampicin, and this decrement was consistent with the decrease in distribution volume from 247 to 59 ml/rat. Comparison of the in vitro IC50 of rifampicin for DHEAS uptake by isolated rat hepatocytes and in vivo plasma rifampicin concentration suggested that the effect of rifampicin on the plasma DHEAS concentration was explained mostly by the inhibition of hepatic OATPs, demonstrating that DHEAS could be a biomarker of hepatic OATP activity. Next, previously reported rifampicin-induced changes in plasma concentrations evaluated as an AUC ratio (AUCR) of possible probe compounds were compared on the basis of rifampicin dose/body surface area. The AUCR values of endogenous compounds and i.v. administered statins, for which possible DDIs in the intestinal absorption process can be excluded, increased proportionally to the rifampicin dose. Simultaneous measurement of these endogenous compounds could be effective biomarkers for the prediction of OATP-based DDIs.
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Affiliation(s)
- Kei Nishizawa
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences University, Kanazawa, Japan
| | - Takeo Nakanishi
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences University, Kanazawa, Japan
| | - Ikumi Tamai
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences University, Kanazawa, Japan
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9
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Sorwell KG, Renner L, Weiss AR, Neuringer M, Kohama SG, Urbanski HF. Cognition in aged rhesus monkeys: effect of DHEA and correlation with steroidogenic gene expression. GENES BRAIN AND BEHAVIOR 2016; 16:361-368. [PMID: 27736018 DOI: 10.1111/gbb.12351] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 08/15/2016] [Accepted: 10/09/2016] [Indexed: 11/29/2022]
Abstract
Estradiol supplementation has been shown to enhance cognitive performance in old ovariectomized rhesus macaques (Macaca mulatta). To determine if similar benefits could be achieved in perimenopausal animals using alternative hormonal supplements, we administered dehydroepiandrosterone (DHEA) to old ovary-intact female rhesus macaques for ∼2.5 months. Using computerized touch screen memory tasks, including delayed response (DR) and delayed matching-to-sample (DMS), we observed improved performance with time in all of the animals but failed to detect a significant effect of DHEA. On the other hand, gene expression profiling disclosed a significant correlation between cognitive performance and the expression of several steroidogenic and steroid-responsive genes. The DR performance was positively correlated with hippocampal expression of AKR1C3 and STAR and negatively correlated with the expression of SDRD5A1. A positive correlation was also found between DMS performance and prefrontal cortical expression of AKR1C3 and a negative correlation with STAR, as well as a negative correlation with the hippocampal expression of HSD11B1 and NR3C1. Taken together, the results suggest that steroidogenic gene regulation within the brain may help to maintain cognitive function during the perimenopausal transition period, despite a decline in sex-steroid levels in the circulation.
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Affiliation(s)
- K G Sorwell
- Division of Neuroscience, Oregon National Primate Research Center, Beaverton.,Department of Behavioral Neuroscience, Oregon Health & Science University, Portland
| | - L Renner
- Division of Neuroscience, Oregon National Primate Research Center, Beaverton
| | - A R Weiss
- Division of Neuroscience, Oregon National Primate Research Center, Beaverton.,Present address: Department of Psychology, Emory University, Atlanta, GA, USA
| | - M Neuringer
- Division of Neuroscience, Oregon National Primate Research Center, Beaverton
| | - S G Kohama
- Division of Neuroscience, Oregon National Primate Research Center, Beaverton
| | - H F Urbanski
- Division of Neuroscience, Oregon National Primate Research Center, Beaverton.,Department of Behavioral Neuroscience, Oregon Health & Science University, Portland.,Department of Physiology & Pharmacology, Oregon Health & Science University, Portland.,Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, Beaverton, OR, USA
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10
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Riscuta G. Nutrigenomics at the Interface of Aging, Lifespan, and Cancer Prevention. J Nutr 2016; 146:1931-1939. [PMID: 27558581 PMCID: PMC5037878 DOI: 10.3945/jn.116.235119] [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: 05/12/2016] [Accepted: 07/14/2016] [Indexed: 01/21/2023] Open
Abstract
The percentage of elderly people with associated age-related health deterioration, including cancer, has been increasing for decades. Among age-related diseases, the incidence of cancer has grown substantially, in part because of the overlap of some molecular pathways between cancer and aging. Studies with model organisms suggest that aging and age-related conditions are manipulable processes that can be modified by both genetic and environmental factors, including dietary habits. Variations in genetic backgrounds likely lead to differential responses to dietary changes and account for some of the inconsistencies found in the literature. The intricacies of the aging process, coupled with the interrelational role of bioactive food components on gene expression, make this review a complex undertaking. Nevertheless, intriguing evidence suggests that dietary habits can manipulate the aging process and/or its consequences and potentially may have unprecedented health benefits. The present review focuses on 4 cellular events: telomerase activity, bioenergetics, DNA repair, and oxidative stress. These processes are linked to both aging and cancer risk, and their alteration in animal models by selected food components is evident.
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Affiliation(s)
- Gabriela Riscuta
- Nutritional Science Research Group, Division of Cancer Prevention, National Cancer Institute, Bethesda, MD
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11
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Sorwell KG, Urbanski HF. Causes and consequences of age-related steroid hormone changes: insights gained from nonhuman primates. J Neuroendocrinol 2013; 25:1062-9. [PMID: 23796387 PMCID: PMC3883982 DOI: 10.1111/jne.12064] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Revised: 06/14/2013] [Accepted: 06/18/2013] [Indexed: 01/23/2023]
Abstract
Similar to humans, rhesus macaques (Macaca mulatta) are large, long-lived diurnal primates, and show similar age-related changes in the secretion of many steroid hormones, including oestradiol, testosterone, cortisol and dehydroepiandrosterone (DHEA). Consequently, they represent a pragmatic animal model in which to examine the mechanisms by which these steroidal changes contribute to perturbed sleep-wake cycles and cognitive decline in the elderly. Using remote serial blood sampling, we have found the circulating levels of DHEA sulphate, as well as oestradiol and testosterone, decline markedly in old monkeys. Furthermore, using the real-time polymerase chain reaction, we have shown that the genes for the enzymes associated with the conversion of DHEA to oestradiol and testosterone (3β-hydroxysteroid dehydrogenase, 17β-hydroxysteroid dehydrogenase, and aromatase) are highly expressed in brain areas associated with cognition and behaviour, including the hippocampus, prefrontal cortex and amygdala. Taken together, these findings suggest that the administration of supplementary DHEA in the elderly may have therapeutic potential for cognitive and behavioural disorders, although with fewer negative side effects outside of the central nervous system. To test this, we have developed a novel steroid supplementation paradigm for use in old animals; this involves the oral administration of DHEA and testosterone at physiologically relevant times of the day to mimic the circadian hormone patterns observed in young adults. We are currently evaluating the efficacy of this steroid supplementation paradigm with respect to reversing age-associated disorders, including perturbed sleep-wake cycles and cognitive decline, as well as an impaired immune response.
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Affiliation(s)
- K G Sorwell
- Departments of Neuroscience and Reproductive & Developmental Sciences, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR, USA; Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR, USA
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Abstract
Aging is associated with a host of biological changes that contribute to a progressive decline in cognitive and physical function, ultimately leading to a loss of independence, and increased risk of mortality. To date, prolonged caloric restriction (i.e., a reduction in caloric intake without malnutrition) is the only non-genetic intervention that has consistently been found to extend both mean and maximal life span across a variety of species. Most individuals have difficulty sustaining prolonged caloric restriction, which has led to a search for alternative approaches that can produce similar to benefits as caloric restriction. A growing body of evidence indicates that fasting periods and intermittent fasting regimens in particular can trigger similar biological pathways as caloric restriction. For this reason, there is increasing scientific interest in further exploring the biological and metabolic effects of intermittent fasting periods, as well as whether long-term compliance may be improved by this type of dietary approach. This special will highlight the latest scientific findings related to the effects of both caloric restriction and intermittent fasting across various species including yeast, fruit flies, worms, rodents, primates, and humans. A specific emphasis is placed on translational research with findings from basic bench to bedside reviewed and practical clinical implications discussed.
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Affiliation(s)
- Stephen Anton
- University of Florida, Department of Aging and Geriatric Research, Institute on Aging, Gainesville, FL 32610, United States.
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