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Adeyemo AA, Adedokun B, Adeolu J, Akinyemi JO, Omotade OO, Oluwatosin OM. Re-telling the story of aminoglycoside ototoxicity: tales from sub-Saharan Africa. Front Neurol 2024; 15:1412645. [PMID: 39006231 PMCID: PMC11239550 DOI: 10.3389/fneur.2024.1412645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Accepted: 06/12/2024] [Indexed: 07/16/2024] Open
Abstract
Background Aminoglycosides, such as Streptomycin, are cheap, potent antibiotics widely used Sub-Saharan Africa. However, aminoglycosides are the commonest cause of ototoxicity. The limited prospective epidemiological studies on aminoglycoside ototoxicity from Sub-Saharan Africa motivated this study to provide epidemiological information on Streptomycin-induced ototoxicity, identify risk factors and predictors of ototoxicity. Method A longitudinal study of 153 adults receiving Streptomycin-based anti-tuberculous drugs was done. All participants underwent extended frequency audiometry and had normal hearing thresholds at baseline. Hearing thresholds were assessed weekly for 2 months, then monthly for the subsequent 6 months. Ototoxicity was determined using the ASHA criteria. Descriptive statistics were used to analyze socio-demographic variables. Ototoxicity incidence rate was calculated, and Kaplan-Meier estimate used to determine cumulative probability of ototoxicity. Chi-square test was done to determine parameters associated with ototoxicity and Cox regression models were used to choose the predictors of ototoxicity. Results Age of participants was 41.43 ± 12.66 years, with a male-to-female ratio of 1:0.6. Ototoxicity was found in 34.6% of the participants, giving an incidence of 17.26 per 1,000-person-week. The mean onset time to ototoxicity was 28.0 ± 0.47 weeks. By 28th week, risk of developing ototoxicity for respondents below 40 years of age was 0.29, and for those above 40 years was 0.77. At the end of the follow-up period, the overall probability of developing ototoxicity in the study population was 0.74. A significant difference in onset of ototoxicity was found between the age groups: the longest onset was seen in <40 years, followed by 40-49 years, and shortest onset in ≥50 years. Hazard of ototoxicity was significantly higher in participants aged ≥50 years compared to participants aged ≤40 years (HR = 3.76, 95% CI = 1.84-7.65). The probability of ototoxicity at 40 g, 60 g and 80 g cumulative dose of Streptomycin was 0.08, 0.43 and 2.34, respectively. Age and cumulative dose were significant predictors of ototoxicity. Conclusion The mean onset time to Streptomycin-induced ototoxicity was 28 weeks after commencement of therapy. Age and cumulative dose can reliably predict the onset of Streptomycin-induced ototoxicity. Medium to long term monitoring of hearing is advised for patients on aminoglycoside therapy.
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Affiliation(s)
- Adebolajo A Adeyemo
- Institute of Child Health, College of Medicine, University of Ibadan, Ibadan, Nigeria
- Department of Otolaryngology, University College Hospital, Ibadan, Nigeria
| | - Babatunde Adedokun
- Department of Epidemiology and Medical Statistics, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Josephine Adeolu
- Institute of Child Health, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Joshua O Akinyemi
- Department of Epidemiology and Medical Statistics, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Olayemi O Omotade
- Institute of Child Health, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Odunayo M Oluwatosin
- Department of Surgery, College of Medicine, University of Ibadan, Ibadan, Nigeria
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Nakamura N. Reasons why the idea that radiation exposures induce cancer needs to be revisited. Int J Radiat Biol 2024; 100:824-833. [PMID: 38647670 DOI: 10.1080/09553002.2024.2338516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 03/12/2024] [Indexed: 04/25/2024]
Abstract
PURPOSE It has long been thought that the carcinogenic effect of radiation resulted from the induction of oncogenic mutations which then led to an increase in the proportion of cancer-bearing individuals. However, even as early as the 1960s, there were indications that the carcinogenic effect of radiation might result from the induction of an earlier onset of cancer. Recently, the former notion was challenged by its inability to explain time-dependent decline of the relative risk following an exposure to radiation, and a parallel shift of mouse survival curves toward younger ages following an exposure to radiation. The two observations are clearly understood if it is assumed only that a radiation exposure causes an earlier onset of spontaneously occurring cancers. METHOD In the present study, a critical review was conducted which examined papers that showed dose responses which apparently supported the mutation induction theory of radiation carcinogenesis. RESULTS It was found that there were two types of misleading experimental designs: one consisted of studies in which observations were prematurely terminated, and which consequently hid a complete story of radiation carcinogenesis. The other set of papers used age adjustments which were derived from the idea that the life shortening effect of radiation needs to be compensated for since tumor mortality becomes higher among older subjects. This type of adjustment appeared reasonable but was found actually to be a different form of description on an earlier onset of cancer following radiation exposures. CONCLUSION In mouse experiments, radiation exposures did not lead to the induction of a large increase in the proportion of tumor deaths when life-long observations were made. Human epidemiologic data are also in line with the earlier onset hypothesis of radiation action. It should be cautioned, however, that the earlier onset model applies only to malignancies whose mortality increases rapidly with the increase of age and does not apply to diseases of short latency such as childhood leukemia and thyroid cancers.
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Affiliation(s)
- Nori Nakamura
- Department of Molecular Biosciences, Radiation Effects Research Foundation, Hiroshima, Japan
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3
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Akhgarjand C, Tavakoli A, Samavat S, Bagheri A, Anoushirvani A, Mirzababaei A, Amini MR, Ghorbi MD, Valisoltani N, Mansour A, Sajjadi-Jazi SM, Ansar H, Rezvani H. The effect of conjugated linoleic acid supplementation in comparison with omega-6 and omega-9 on lipid profile: a graded, dose-response systematic review and meta-analysis of randomized controlled trials. Front Nutr 2024; 11:1336889. [PMID: 38567248 PMCID: PMC10985181 DOI: 10.3389/fnut.2024.1336889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Accepted: 02/05/2024] [Indexed: 04/04/2024] Open
Abstract
Conjugated linoleic acid (CLA) is a geometrical isomer of linoleic acid, which has anti-inflammatory, anti-diabetic, anti-cancer, and anti-obesity properties. However, the studies reported inconstant results about the CLA-related effects on lipid profiles. As a result, meta-analysis and systematic review were performed to survey the CLA supplementation-related effect on lipid profile including high-density lipoprotein (HDL), low-density lipoprotein (LDL), total cholesterol (TC), and triglycerides (TG). To identify the relevant research, a systematic comprehensive search was initiated on the medical databases such as Scopus and PubMed/Medline until December 2022. The overall effect size was estimated by weighted mean difference (WMD) and 95% confidence interval (CI) in a random effect meta-analysis. In the final quantitative analysis, the meta-analysis considered 35 randomized controlled trials (RCTs) with 1,476 participants (707 controls and 769 cases). The pooled results demonstrated that CLA supplementation, compared with olive oil, significantly increased serum TG levels (WMD: 0.05 mmol/L; 95% CI: 0.01 to 0.1; p = 0.04; I2 = 0.0%, p = 0.91). With regard to TC level, CLA supplementation compared with placebo significantly reduced TC concentrations (WMD: -0.08 mmol/L; 95% CI: -0.14 to -0.02; p < 0.001; I2 = 82.4%). Moreover, the non-linear dose-response analysis indicated a decreasing trend of TC serum level from the 15th week of CLA supplementation compared with olive oil (Pnon-linearity = 0.01). The present meta-analysis and systematic review of 35 RCTs showed that the CLA intervention was able to raise the level of TG in comparison to olive oil; however, it can decrease TC level compared with placebo and olive oil.
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Affiliation(s)
- Camellia Akhgarjand
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Aryan Tavakoli
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Simin Samavat
- Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Bagheri
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Aliarash Anoushirvani
- Hemato-Oncology Ward, Firoozgar Hospital, Iran University of Medical Science, Tehran, Iran
| | - Atieh Mirzababaei
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Amini
- Student Research Committee, Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition & Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahmoud Dehghani Ghorbi
- Hemato-Oncology Ward, Imam Hossein Hospital, Shahid Beheshti University of Medical Science, Tehran, Iran
| | - Neda Valisoltani
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Asieh Mansour
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Sayed Mahmoud Sajjadi-Jazi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Hastimansooreh Ansar
- Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamid Rezvani
- Hemato-Oncology Ward, Taleghani Hospital, Shahid Beheshti University of Medical Science, Tehran, Iran
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Ji J, Fotros D, Sohouli MH, Velu P, Fatahi S, Liu Y. The effect of a ketogenic diet on inflammation-related markers: a systematic review and meta-analysis of randomized controlled trials. Nutr Rev 2024:nuad175. [PMID: 38219223 DOI: 10.1093/nutrit/nuad175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2024] Open
Abstract
CONTEXT Despite the important role of inflammation-related factors on the occurrence of chronic diseases, there is still conflicting evidence about the effects of the ketogenic diet (KD) on these factors. OBJECTIVE In order to obtain a better viewpoint, this study aimed to comprehensively investigate the effects of a KD on inflammation-related markers. DATA SOURCES To find pertinent randomized controlled trials up to August 2023, databases including PubMed/Medline, Web of Science, Scopus, Cochrane Library, and Embase were searched. DATA EXTRACTION This study included all randomized controlled trials investigating the effects of a KD on C-reactive protein (CRP), tumor necrosis factor-alpha (TNF-α), interleukin (IL)-6, IL-8, and IL-10 levels. Pooled weighted mean difference (WMD) and 95% confidence intervals (CIs) were achieved by random-effects model analysis for the best estimation of outcomes. DATA ANALYSIS Forty-four studies were included in this article. The pooled findings showed that a KD has an effect on lowering TNF-α (WMD: -0.32 pg/mL; 95% CI: -0.55, -0.09; P = 0.007) and IL-6 (WMD: -0.27 pg/mL; 95% CI: -0.52, -0.02; P = 0.036) compared with control groups. However, no significant effect was reported for others inflammation marker-related levels. The results of the subgroup analysis showed that, in trials following the KD for ≤8 weeks and in people aged ≤50 years, the reduction in TNF-α levels was significantly higher than in other groups. In addition, in people with a body mass index greater than 30 kg/m2 compared to a body mass index ≤30 kg/m2, IL-6 levels decreased to a greater extent after receiving the KD. CONCLUSIONS Consequently, adherence to a KD appears to improve some markers associated with inflammation, including TNF-α and IL-6.
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Affiliation(s)
- Jiawei Ji
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Danial Fotros
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Hassan Sohouli
- Student Research Committee, Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Periyannan Velu
- Galileovasan Offshore and Research and Development Pvt Ltd, Nagapattinam, Tamil Nadu, India
| | - Somaye Fatahi
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Yinghao Liu
- Institute of Grassland Research, Chinese Academy of Agricultural Sciences, Hohhot, China
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Hegmann KT, Thiese MS, Wood EM, Kapellusch J, Foster JC, Drury DL, Kendall R, Merryweather AS. Cardiovascular Disease Risk Factors Predict the Development and Numbers of Common Musculoskeletal Disorders in a Prospective Cohort. J Occup Environ Med 2023; 65:e527-e533. [PMID: 37264528 PMCID: PMC10417266 DOI: 10.1097/jom.0000000000002895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE The aim of the study is to assess risk of common musculoskeletal disorders (MSDs) based on cardiovascular disease (CVD) risk scores. METHODS Data from a 9-year prospective cohort of 1224 workers in three states were analyzed. Baseline data included questionnaires, structured interviews, physical examinations, anthropometric measurements, nerve conduction studies, and individualized measurement of job physical factors. Monthly follow-ups were conducted. Framingham risk scores were calculated. A priori case definitions were constructed for carpal tunnel syndrome, lateral epicondylopathy, medial epicondylopathy, and rotator cuff tendinopathy. RESULTS Adjusted RRs for one or more MSDs increased to 3.90 (95% confidence interval, 2.20-6.90) among those with 10-year cardiovascular disease risk scores greater than 15% and 17.4 (95% confidence interval, 3.85-78.62) among those with more than 4 disorders. CONCLUSIONS Cardiovascular disease factors are strongly associated with the subsequent development of common MSDs. Risks among those with multiple MSDs are considerably stronger.
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Phillips EJ, Simons MJP. Rapamycin not dietary restriction improves resilience against pathogens: a meta-analysis. GeroScience 2022; 45:1263-1270. [PMID: 36399256 PMCID: PMC9886774 DOI: 10.1007/s11357-022-00691-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 11/08/2022] [Indexed: 11/19/2022] Open
Abstract
Dietary restriction (DR) and rapamycin both increase lifespan across a number of taxa. Despite this positive effect on lifespan and other aspects of health, reductions in some physiological functions have been reported for DR, and rapamycin has been used as an immunosuppressant. Perhaps surprisingly, both interventions have been suggested to improve immune function and delay immunosenescence. The immune system is complex and consists of many components. Therefore, arguably, the most holistic measurement of immune function is survival from an acute pathogenic infection. We reanalysed published post-infection short-term survival data of mice (n = 1223 from 23 studies comprising 46 effect sizes involving DR (n = 17) and rapamycin treatment (n = 29) and analysed these results using meta-analysis. Rapamycin treatment significantly increased post infection survival rate (lnHR = - 0.72; CI = - 1.17, -0.28; p = 0.0015). In contrast, DR reduced post-infection survival (lnHR = 0.80; CI = 0.08, 1.52; p = 0.03). Importantly, the overall effect size of rapamycin treatment was significantly lower (p < 0.001) than the estimate from DR studies, suggesting opposite effects on immune function. Our results show that immunomodulation caused by rapamycin treatment is beneficial to the survival from acute infection. For DR, our results are based on a smaller number of studies, but do warrant caution as they indicate possible immune costs of DR. Our quantitative synthesis suggests that the geroprotective effects of rapamycin extend to the immune system and warrants further clinical trials of rapamycin to boost immunity in humans.
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Affiliation(s)
- Eleanor J. Phillips
- School of Biosciences, University of Sheffield, Western Bank, Sheffield, S10 2TN UK
| | - Mirre J. P. Simons
- School of Biosciences, University of Sheffield, Western Bank, Sheffield, S10 2TN UK
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Du J, Shi Y, Zhou C, Guo L, Hu R, Huang C, Hu G, Gao X, Guo X. Antioxidative and anti-inflammatory effects of vitamin C on the liver of laying hens under chronic heat stress. Front Vet Sci 2022; 9:1052553. [PMID: 36387409 PMCID: PMC9650548 DOI: 10.3389/fvets.2022.1052553] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 10/10/2022] [Indexed: 11/30/2022] Open
Abstract
In this study, we investigated the therapeutic effect and mechanism of action of vitamin C on chronic heat stress (CHS)-induced liver oxidative damage and inflammation in laying hens. The thermoneutral control group (TN group) was kept at a constant temperature of 22 ± 1°C, while the chronic heat stress group (CHS group) and the vitamin C supplemented group (HSV group) were exposed to heat stress (HS) (36 ± 1°C, 8 h/d). The TN and HS groups were fed the basic diet at will, and the HSV group was supplemented with 300 mg/kg of vitamin C on top of the basic diet. The experimental results showed a significant improvement in body weight and feed intake in the HSV group compared to the HS group. A significantly lower pH and higher HCO3- and PCO2 levels were observed in the HSV group compared to the CHS group. As laying hens were supplemented with vitamin C, serum malondialdehyde (MDA) level was declined, superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities were increased, and total antioxidant capacity (T-AOC) was increased. Further, CHS induced an increase in the expression of inflammation-related genes and a decrease in the expression of antioxidant-related genes. In contrast, the addition of vitamin C reversed the effects of CHS, resulting in an increase in the expression of antioxidant-related genes and a decrease in the expression of inflammation-related genes. In conclusion, vitamin C can effectively alleviate CHS-induced acid-base imbalance in body fluids of laying hens and the oxidative damage and inflammatory response caused to the liver. Therefore, vitamin C can be used clinically as an effective drug to alleviate chronic heat stress in laying hens. This experiment provides clinical evidence and theoretical basis for the use of vitamin C as an effective drug to alleviate chronic heat stress in laying hens.
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Affiliation(s)
- Jun Du
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| | - Yan Shi
- School of Computer and Information Engineering, Jiangxi Agricultural University, Nanchang, China
| | - Changming Zhou
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| | - Lianying Guo
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| | - Ruiming Hu
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| | - Cheng Huang
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| | - Guoliang Hu
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| | - Xiaona Gao
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
- *Correspondence: Xiaona Gao
| | - Xiaoquan Guo
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
- Xiaoquan Guo
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Chen M, Wang Y, Deng S, Lian Z, Yu K. Skeletal muscle oxidative stress and inflammation in aging: Focus on antioxidant and anti-inflammatory therapy. Front Cell Dev Biol 2022; 10:964130. [PMID: 36111339 PMCID: PMC9470179 DOI: 10.3389/fcell.2022.964130] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 08/10/2022] [Indexed: 12/06/2022] Open
Abstract
With aging, the progressive loss of skeletal muscle will have negative effect on multiple physiological parameters, such as exercise, respiration, thermoregulation, and metabolic homeostasis. Accumulating evidence reveals that oxidative stress and inflammation are the main pathological characteristics of skeletal muscle during aging. Here, we focus on aging-related sarcopenia, summarize the relationship between aging and sarcopenia, and elaborate on aging-mediated oxidative stress and oxidative damage in skeletal muscle and its critical role in the occurrence and development of sarcopenia. In addition, we discuss the production of excessive reactive oxygen species in aging skeletal muscle, which reduces the ability of skeletal muscle satellite cells to participate in muscle regeneration, and analyze the potential molecular mechanism of ROS-mediated mitochondrial dysfunction in aging skeletal muscle. Furthermore, we have also paid extensive attention to the possibility and potential regulatory pathways of skeletal muscle aging and oxidative stress mediate inflammation. Finally, in response to the abnormal activity of oxidative stress and inflammation during aging, we summarize several potential antioxidant and anti-inflammatory strategies for the treatment of sarcopenia, which may provide beneficial help for improving sarcopenia during aging.
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Affiliation(s)
- Mingming Chen
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yiyi Wang
- Zhejiang A&F University, Zhejiang Provincial Key Laboratory of Characteristic Traditional Chinese Medicine Resources Protection and Innovative Utilization, Lin’an, China
| | - Shoulong Deng
- NHC Key Laboratory of Human Disease Comparative Medicine, Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences and Comparative Medicine Center, Peking Union Medical College, Beijing, China
| | - Zhengxing Lian
- College of Animal Science and Technology, China Agricultural University, Beijing, China
- *Correspondence: Zhengxing Lian, ; Kun Yu,
| | - Kun Yu
- College of Animal Science and Technology, China Agricultural University, Beijing, China
- *Correspondence: Zhengxing Lian, ; Kun Yu,
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Age-Related Hearing Loss: The Link between Inflammaging, Immunosenescence, and Gut Dysbiosis. Int J Mol Sci 2022; 23:ijms23137348. [PMID: 35806352 PMCID: PMC9266910 DOI: 10.3390/ijms23137348] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/30/2022] [Accepted: 06/30/2022] [Indexed: 12/12/2022] Open
Abstract
This article provides a theoretical overview of the association between age-related hearing loss (ARHL), immune system ageing (immunosenescence), and chronic inflammation. ARHL, or presbyacusis, is the most common sensory disability that significantly reduces the quality of life and has a high economic impact. This disorder is linked to genetic risk factors but is also influenced by a lifelong cumulative effect of environmental stressors, such as noise, otological diseases, or ototoxic drugs. Age-related hearing loss and other age-related disorders share common mechanisms which often converge on low-grade chronic inflammation known as “inflammaging”. Various stimuli can sustain inflammaging, including pathogens, cell debris, nutrients, and gut microbiota. As a result of ageing, the immune system can become defective, leading to the accumulation of unresolved inflammatory processes in the body. Gut microbiota plays a central role in inflammaging because it can release inflammatory mediators and crosstalk with other organ systems. A proinflammatory gut environment associated with ageing could result in a leaky gut and the translocation of bacterial metabolites and inflammatory mediators to distant organs via the systemic circulation. Here, we postulate that inflammaging, as a result of immunosenescence and gut dysbiosis, accelerates age-related cochlear degeneration, contributing to the development of ARHL. Age-dependent gut dysbiosis was included as a hypothetical link that should receive more attention in future studies.
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Robbins JP, Solito E. Does Neuroinflammation Underlie the Cognitive Changes Observed With Dietary Interventions? Front Neurosci 2022; 16:854050. [PMID: 35620671 PMCID: PMC9127342 DOI: 10.3389/fnins.2022.854050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 03/24/2022] [Indexed: 11/13/2022] Open
Abstract
Dietary interventions, such as calorie restriction and ketogenic diet, have been extensively studied in ageing research, including in cognitive decline. Epidemiological studies indicate beneficial effects of certain dietary regimes on mental health, including mood disorders and dementia. However, randomised-controlled trials (the gold-standard of evidence-based medicine) on calorie restriction diets and the ketogenic diet have yet to show clinically convincing effects in neuropsychiatric disorders. This review will examine the quality of studies and evidence base for the ketogenic and calorie restriction diets in common neuropsychiatric conditions, collating findings from preclinical experiments, case reports or small clinical studies, and randomised controlled clinical trials. The major cellular mechanisms that mediate the effects of these dietary interventions on brain health include neuroinflammation, neuroprotection, and neuromodulation. We will discuss the studies that have investigated the roles of these pathways and their interactions. Popularity of the ketogenic and calorie restriction diets has grown both in the public domain and in psychiatry research, allowing for informed review of the efficacy, the limitations, and the side effects of these diets in specific patient populations. In this review we will summarise the clinical evidence for these diets in neuropsychiatry and make suggestions to improve clinical translation of future research studies.
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Affiliation(s)
- Jacqueline P. Robbins
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Egle Solito
- William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
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Insights into the Anti-Aging Prevention and Diagnostic Medicine and Healthcare. Diagnostics (Basel) 2022; 12:diagnostics12040819. [PMID: 35453867 PMCID: PMC9028886 DOI: 10.3390/diagnostics12040819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/22/2022] [Accepted: 03/25/2022] [Indexed: 12/04/2022] Open
Abstract
Aging is an irreversible and natural phenomenon that occurs as a person ages. Anti-aging medicine applies advanced science and medical technology to early detection, prevention, treatment, and reversal of age-related dysfunctions, disorders, and diseases. Therefore, anti-aging diagnostic medicine and healthcare are important factors in helping the elderly population lead healthy and active lives. However, it is challenging to diagnose various aging and related diseases accurately through various forms of anti-aging diagnostic medicine and health management. It may not be treated appropriately, so many older people are making various efforts to prevent aging themselves in advance. Therefore, anti-aging medicine and health care have been developed in various forms, from health checkups to alternative medicine and biophysical technology beyond simple clinical medicine, and are being applied to demand the needs of the elderly. This review intends to explore and characterize various applications related to anti-aging medicine and healthcare in the elderly. In addition, economic, medical, and ethical considerations arising from the relationship between the increase in the elderly population and the continuous development of anti-aging medicine can be considered.
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12
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A comparative proteomic analysis to define the influencing factors on gingival crevicular fluid using LC-MS/MS. J Proteomics 2022; 252:104421. [PMID: 34801745 DOI: 10.1016/j.jprot.2021.104421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 10/28/2021] [Accepted: 11/04/2021] [Indexed: 12/18/2022]
Abstract
Gingival crevicular fluid (GCF) is a promising biofluid for disease identification and biomarker searching in periodontology. This study aimed to investigate the possible influencing factors, including tooth site, sex and age, on the normal GCF proteome. Forty periodontal healthy adults were randomly divided into a training group and a testing group. In the training group, GCF samples from 12 adults were analyzed using the iTRAQ 2D LC-MS/MS method. The influencing factors, tooth site (including periodontitis-susceptible and -insusceptible tooth sites), sex and age, and related differential proteins were defined and functionally annotated. The important differential proteins from 28 adults in the testing group were then validated by PRM analysis. An average of approximately 5 differential proteins were found between tooth sites of periodontitis-susceptible and -insusceptible sites. Eighty-five differentially expressed proteins were obtained between sexes in the young group, while only 7 sex-associated proteins were found in the old group. A total of 203 and 235 age-associated proteins were found in the male and female groups, respectively. The differential protein functional annotation showed that sex-related proteins were mainly related to immune function and metabolism, and age-related proteins were primarily associated with inflammation, lipid metabolism and immune function. In the testing group, a total of 4 sex-related proteins and 12 age-related proteins were validated by PRM analysis. SIGNIFICANCE: The influences of tooth site, sex and age in GCF proteomics in periodontal health were firstly analyzed using LC-MS/MS. Tooth site showed a small influence on the GCF proteome. The sex effect was significant in young adults, but its influence in old adults is small. Age is an important impact factor for the GCF proteome. These findings enrich the knowledge about the normal GCF proteome and might benefit future disease analyses.
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Raji-Amirhasani A, Khaksari M, Shahrokhi N, Soltani Z, Nazari-Robati M, Mahani FD, Hajializadeh Z, Sabet N. Comparison of the effects of different dietary regimens on susceptibility to experimental acute kidney injury: the role of SIRT1 and TGF-β1. Nutrition 2022; 96:111588. [DOI: 10.1016/j.nut.2022.111588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 12/10/2021] [Accepted: 12/29/2021] [Indexed: 10/19/2022]
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Zou H, Ye H, Kamaraj R, Zhang T, Zhang J, Pavek P. A review on pharmacological activities and synergistic effect of quercetin with small molecule agents. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 92:153736. [PMID: 34560520 DOI: 10.1016/j.phymed.2021.153736] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/25/2021] [Accepted: 09/05/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Quercetin is a natural flavonoid, which widely exists in nature, such as tea, coffee, apples, and onions. Numerous studies have showed that quercetin has multiple biological activities such as anti-oxidation, anti-inflammatory, and anti-aging. Hence, quercetin has a significant therapeutic effect on cancers, obesity, diabetes, and other diseases. In the past decades, a large number of studies have shown that quercetin combined with other agents can significantly improve the overall therapeutic effect, compared to single use. PURPOSE This work reviews the pharmacological activities of quercetin and its derivatives. In addition, this work also summarizes both in vivo and in vitro experimental evidence for the synergistic effect of quercetin against cancers and metabolic diseases. METHODS An extensive systematic search for pharmacological activities and synergistic effect of quercetin was performed considering all the relevant literatures published until August 2021 through the databases including NCBI PubMed, Scopus, Web of Science, and Google Scholar. The relevant literatures were extracted from the databases with following keyword combinations: "pharmacological activities" OR "biological activities" OR "synergistic effect" OR "combined" OR "combination" AND "quercetin" as well as free-text words. RESULTS Quercetin and its derivatives possess multiple pharmacological activities including anti-cancer, anti-oxidant, anti-inflammatory, anti-cardiovascular, anti-aging, and neuroprotective activities. In addition, the synergistic effect of quercetin with small molecule agents against cancers and metabolic diseases has also been confirmed. CONCLUSION Quercetin cooperates with agents to improve the therapeutic effect by regulating signal molecules and blocking cell cycle. Synergistic therapy can reduce the dose of agents and avoid the possible toxic and side effects in the treatment process. Although quercetin treatment has some potential side effects, it is safe under the expected use conditions. Hence, quercetin has application value and potential strength as a clinical drug. Furthermore, quercetin, as the main effective therapeutic ingredient in traditional Chinese medicine, may effectively treat and prevent coronavirus disease 2019 (COVID-19).
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Affiliation(s)
- Haoyang Zou
- College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Haiqing Ye
- College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Rajamanikkam Kamaraj
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove CZ500 05, Czech Republic
| | - Tiehua Zhang
- College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Jie Zhang
- College of Food Science and Engineering, Jilin University, Changchun 130062, China.
| | - Petr Pavek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove CZ500 05, Czech Republic.
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Bazard P, Pineros J, Frisina RD, Bauer MA, Acosta AA, Paganella LR, Borakiewicz D, Thivierge M, Mannering FL, Zhu X, Ding B. Cochlear Inflammaging in Relation to Ion Channels and Mitochondrial Functions. Cells 2021; 10:2761. [PMID: 34685743 PMCID: PMC8534887 DOI: 10.3390/cells10102761] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/06/2021] [Accepted: 10/12/2021] [Indexed: 12/20/2022] Open
Abstract
The slow accumulation of inflammatory biomarker levels in the body-also known as inflammaging-has been linked to a myriad of age-related diseases. Some of these include neurodegenerative conditions such as Parkinson's disease, obesity, type II diabetes, cardiovascular disease, and many others. Though a direct correlation has not been established, research connecting age-related hearing loss (ARHL)-the number one communication disorder and one of the most prevalent neurodegenerative diseases of our aged population-and inflammaging has gained interest. Research, thus far, has found that inflammatory markers, such as IL-6 and white blood cells, are associated with ARHL in humans and animals. Moreover, studies investigating ion channels and mitochondrial involvement have shown promising relationships between their functions and inflammaging in the cochlea. In this review, we summarize key findings in inflammaging within the auditory system, the involvement of ion channels and mitochondrial functions, and lastly discuss potential treatment options focusing on controlling inflammation as we age.
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Affiliation(s)
- Parveen Bazard
- Department of Medical Engineering, College of Engineering, University of South Florida, Tampa, FL 33620, USA; (P.B.); (J.P.); (M.A.B.); (A.A.A.); (L.R.P.); (D.B.); (M.T.); (X.Z.); (B.D.)
- Global Center for Hearing and Speech Research, University of South Florida, Tampa, FL 33612, USA;
| | - Jennifer Pineros
- Department of Medical Engineering, College of Engineering, University of South Florida, Tampa, FL 33620, USA; (P.B.); (J.P.); (M.A.B.); (A.A.A.); (L.R.P.); (D.B.); (M.T.); (X.Z.); (B.D.)
- Global Center for Hearing and Speech Research, University of South Florida, Tampa, FL 33612, USA;
| | - Robert D. Frisina
- Department of Medical Engineering, College of Engineering, University of South Florida, Tampa, FL 33620, USA; (P.B.); (J.P.); (M.A.B.); (A.A.A.); (L.R.P.); (D.B.); (M.T.); (X.Z.); (B.D.)
- Global Center for Hearing and Speech Research, University of South Florida, Tampa, FL 33612, USA;
- Department Communication Sciences and Disorders, College of Behavioral & Communication Sciences, Tampa, FL 33620, USA
- Morsani College of Medicine, University of South Florida, Tampa, FL 33620, USA
| | - Mark A. Bauer
- Department of Medical Engineering, College of Engineering, University of South Florida, Tampa, FL 33620, USA; (P.B.); (J.P.); (M.A.B.); (A.A.A.); (L.R.P.); (D.B.); (M.T.); (X.Z.); (B.D.)
- Global Center for Hearing and Speech Research, University of South Florida, Tampa, FL 33612, USA;
| | - Alejandro A. Acosta
- Department of Medical Engineering, College of Engineering, University of South Florida, Tampa, FL 33620, USA; (P.B.); (J.P.); (M.A.B.); (A.A.A.); (L.R.P.); (D.B.); (M.T.); (X.Z.); (B.D.)
- Global Center for Hearing and Speech Research, University of South Florida, Tampa, FL 33612, USA;
| | - Lauren R. Paganella
- Department of Medical Engineering, College of Engineering, University of South Florida, Tampa, FL 33620, USA; (P.B.); (J.P.); (M.A.B.); (A.A.A.); (L.R.P.); (D.B.); (M.T.); (X.Z.); (B.D.)
- Global Center for Hearing and Speech Research, University of South Florida, Tampa, FL 33612, USA;
| | - Dominika Borakiewicz
- Department of Medical Engineering, College of Engineering, University of South Florida, Tampa, FL 33620, USA; (P.B.); (J.P.); (M.A.B.); (A.A.A.); (L.R.P.); (D.B.); (M.T.); (X.Z.); (B.D.)
- Global Center for Hearing and Speech Research, University of South Florida, Tampa, FL 33612, USA;
| | - Mark Thivierge
- Department of Medical Engineering, College of Engineering, University of South Florida, Tampa, FL 33620, USA; (P.B.); (J.P.); (M.A.B.); (A.A.A.); (L.R.P.); (D.B.); (M.T.); (X.Z.); (B.D.)
- Morsani College of Medicine, University of South Florida, Tampa, FL 33620, USA
| | - Freyda L. Mannering
- Global Center for Hearing and Speech Research, University of South Florida, Tampa, FL 33612, USA;
- Morsani College of Medicine, University of South Florida, Tampa, FL 33620, USA
| | - Xiaoxia Zhu
- Department of Medical Engineering, College of Engineering, University of South Florida, Tampa, FL 33620, USA; (P.B.); (J.P.); (M.A.B.); (A.A.A.); (L.R.P.); (D.B.); (M.T.); (X.Z.); (B.D.)
- Global Center for Hearing and Speech Research, University of South Florida, Tampa, FL 33612, USA;
| | - Bo Ding
- Department of Medical Engineering, College of Engineering, University of South Florida, Tampa, FL 33620, USA; (P.B.); (J.P.); (M.A.B.); (A.A.A.); (L.R.P.); (D.B.); (M.T.); (X.Z.); (B.D.)
- Global Center for Hearing and Speech Research, University of South Florida, Tampa, FL 33612, USA;
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The role of telomerase in the etiology of primary spontaneous pneumothorax. TURK GOGUS KALP DAMAR CERRAHISI DERGISI-TURKISH JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY 2021; 29:377-383. [PMID: 34589257 PMCID: PMC8462098 DOI: 10.5606/tgkdc.dergisi.2021.20522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 11/09/2020] [Indexed: 11/25/2022]
Abstract
Background
This study aims to investigate the role of telomerase activity in the risk of primary spontaneous pneumothorax, which is most frequently encountered in the practice of thoracic surgery.
Methods
A total of 61 patients (56 males, 5 females; median age: 29.4 years; range, 17 to 43 years) who underwent treatment for primary spontaneous pneumothorax and 19 age- and sex-matched healthy controls (10 males, 9 females; median age: 29.1 years; range, 23 to 43 years) were included in this prospective study between January 2018 - August 2018. Telomerase activity was evaluated with enzyme-linked immunosorbent assay. The correlation between telomerase activity and clinical and demographic parameters was examined.
Results
The mean serum telomerase level was 3.4±0.6 ng/mL in the primary spontaneous pneumothorax group and 1.9±0.5 ng/mL in the control group, indicating significantly higher levels in the patient group (p<0.001). There was no significant association between the telomerase levels and presence of blebs and/or bullae on thoracic computed tomography, extent of pneumothorax, laterality (right, left, or bilateral), and pack years of cigarette smoking.
Conclusion
Telomerase levels of patients with primary spontaneous pneumothorax are significantly higher than healthy individuals. Future genetic studies may ultimately clarify a potential relationship between primary spontaneous pneumothorax and short telomere syndrome.
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An Insight into Pathophysiological Features and Therapeutic Advances on Ependymoma. Cancers (Basel) 2021; 13:cancers13133221. [PMID: 34203272 PMCID: PMC8269186 DOI: 10.3390/cancers13133221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/21/2021] [Accepted: 06/23/2021] [Indexed: 12/21/2022] Open
Abstract
Simple Summary Although biological information and the molecular classification of ependymoma have been studied, the treatment systems for ependymoma are still insufficient. In addition, because the disease occurs infrequently, it is difficult to obtain sufficient data to conduct large-scale or randomized clinical trials. Therefore, this study is intended to emphasize the importance of understanding its pathological characteristics and prognosis as well as developing treatments for ependymoma through multilateral studies. Abstract Glial cells comprise the non-sensory parts of the central nervous system as well as the peripheral nervous system. Glial cells, also known as neuroglia, constitute a significant portion of the mammalian nervous system and can be viewed simply as a matrix of neural cells. Despite being the “Nervenkitt” or “glue of the nerves”, they aptly serve multiple roles, including neuron repair, myelin sheath formation, and cerebrospinal fluid circulation. Ependymal cells are one of four kinds of glial cells that exert distinct functions. Tumorigenesis of a glial cell is termed a glioma, and in the case of an ependymal cell, it is called an ependymoma. Among the various gliomas, an ependymoma in children is one of the more challenging brain tumors to cure. Children are afflicted more severely by ependymal tumors than adults. It has appeared from several surveys that ependymoma comprises approximately six to ten percent of all tumors in children. Presently, the surgical removal of the tumor is considered a standard treatment for ependymomas. It has been conspicuously evident that a combination of irradiation therapy and surgery is much more efficacious in treating ependymomas. The main purpose of this review is to present the importance of both a deep understanding and ongoing research into histopathological features and prognoses of ependymomas to ensure that effective diagnostic methods and treatments can be developed.
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Cheng J, Chen M, Wan HQ, Chen XQ, Li CF, Zhu JX, Liu Q, Xu GH, Yi LT. Paeoniflorin exerts antidepressant-like effects through enhancing neuronal FGF-2 by microglial inactivation. JOURNAL OF ETHNOPHARMACOLOGY 2021; 274:114046. [PMID: 33753146 DOI: 10.1016/j.jep.2021.114046] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 02/26/2021] [Accepted: 03/15/2021] [Indexed: 06/12/2023]
Abstract
Ethnopharmacological relevance Paeonia lactiflora is a famous Traditional Chinese medicine widely used for immunological regulation. Paeoniflorin, the main component of Paeonia lactiflora, exerts neuroprotective and antidepressant-like effects in rodents. AIM OF THE STUDY Fibroblast growth factor 2 (FGF-2) is essentially required in the central nervous system as it acts as both a neurotrophic factor and an anti-inflammatory factor participating in the regulation of proliferation, differentiation and apoptosis of neurons in the brain. However, it is unclear whether paeoniflorin could exert antidepressant effects via regulating FGF-2. MATERIALS AND METHODS In the present study, the effects of paeoniflorin were evaluated in depressive mice induced by the endotoxin lipopolysaccharide (LPS) injection. RESULTS The results showed that paeoniflorin markedly increased sucrose preference and reduced immobility time in LPS mice, indicating antidepressant effects. Consistent with the results from molecular docking showing paeoniflorin antagonizes TLR4, NF-κB and NLRP3, the biochemical analysis also indicated paeoniflorin inhibited TLR4/NF-κB/NLRP3 signaling, decreased proinflammatory cytokine levels and microglial activation in the hippocampus of LPS induced mice. In addition, the levels of neuronal FGF-2 and the density of dendritic spine were improved by paeoniflorin. More importantly, the FGFR1 inhibitor SU5402 prevented the antidepressant effects of paeoniflorin and blocked the neuroinflammatory and neurogenic regulatory effects of paeoniflorin, indicating that FGF-2/FGFR1 activation was required for the effects of paeoniflorin. CONCLUSION Taken together, the results demonstrate that paeoniflorin exhibits neuroprotective and antidepressant effects in mice, which may be mediated by activating neuronal FGF-2/FGFR1 signaling via the inhibition of microglial activation in the hippocampus.
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Affiliation(s)
- Jie Cheng
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, 361021, Fujian province, PR China.
| | - Min Chen
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, 361021, Fujian province, PR China.
| | - Hui-Qi Wan
- Xiamen Medicine Research Institute, Xiamen, 361008, Fujian province, PR China.
| | - Xue-Qin Chen
- Xiamen Hospital of Traditional Chinese Medicine, Xiamen, 361009, Fujian province, PR China.
| | - Cheng-Fu Li
- Xiamen Hospital of Traditional Chinese Medicine, Xiamen, 361009, Fujian province, PR China.
| | - Ji-Xiao Zhu
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, Jiangxi province, PR China.
| | - Qing Liu
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, 361021, Fujian province, PR China.
| | - Guang-Hui Xu
- Xiamen Medicine Research Institute, Xiamen, 361008, Fujian province, PR China.
| | - Li-Tao Yi
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, 361021, Fujian province, PR China; Fujian Provincial Key Laboratory of Biochemical Technology, Huaqiao University, Xiamen, 361021, Fujian province, PR China.
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19
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Davis AE, Smyers ME, Beltz L, Mehta DM, Britton SL, Koch LG, Novak CM. Differential weight loss with intermittent fasting or daily calorie restriction in low- and high-fitness phenotypes. Exp Physiol 2021; 106:1731-1742. [PMID: 34086376 DOI: 10.1113/ep089434] [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: 01/26/2021] [Accepted: 06/02/2021] [Indexed: 11/08/2022]
Abstract
NEW FINDINGS What is the central question of this study? How does intrinsic aerobic capacity impact weight loss with 50% daily caloric restriction and alternate-day fasting? What is the main finding and its importance? Intermittent fasting is effective for weight loss in rats with low fitness, which highlights the importance of how intermittent fasting interacts with aerobic fitness. ABSTRACT Recent interest has focused on the benefits of time-restricted feeding strategies, including intermittent fasting, for weight loss. It is not yet known whether intermittent fasting is more effective than daily caloric restriction at stimulating weight loss and how each is subject to individual differences. Here, rat models of leanness and obesity, artificially selected for intrinsically high (HCR) and low (LCR) aerobic capacity, were subjected to intermittent fasting and 50% calorie restrictive diets in two separate experiments using male rats. The lean, high-fitness HCR and obesity-prone, low-fitness LCR rats underwent 50% caloric restriction while body weight and composition were monitored. The low-fitness LCR rats were better able to retain lean mass than the high-fitness HCR rats, without significantly different proportional loss of weight or fat. In a separate experiment using intermittent fasting in male HCR and LCR rats, alternate-day fasting induced significantly greater loss of weight and fat mass in LCR compared with HCR rats, although the HCR rats had a more marked reduction in ad libitum daily food intake. Altogether, this suggests that intermittent fasting is an effective weight-loss strategy for those with low intrinsic aerobic fitness; however, direct comparison of caloric restriction and intermittent fasting is warranted to determine any differential effects on energy expenditure in lean and obesity-prone phenotypes.
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Affiliation(s)
- Ashley E Davis
- School of Biomedical Sciences, Kent State University, Kent, Ohio, USA
| | - Mark E Smyers
- School of Biomedical Sciences, Kent State University, Kent, Ohio, USA
| | - Lisa Beltz
- Department of Biological Sciences, Kent State University, Kent, Ohio, USA
| | - Devanshi M Mehta
- Department of Biological Sciences, Kent State University, Kent, Ohio, USA
| | - Steven L Britton
- Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan, USA.,Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan, USA
| | - Lauren G Koch
- Department of Physiology and Pharmacology, The University of Toledo College of Medicine and Life Sciences, Toledo, Ohio, USA
| | - Colleen M Novak
- School of Biomedical Sciences, Kent State University, Kent, Ohio, USA.,Department of Biological Sciences, Kent State University, Kent, Ohio, USA
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Kim MJ, Kim DH, Bang E, Noh SG, Chun P, Yokozawa T, Moon HR, Chung HY. PPARα Agonist, MHY3200, Alleviates Renal Inflammation during Aging via Regulating ROS/Akt/FoxO1 Signaling. Molecules 2021; 26:3197. [PMID: 34073584 PMCID: PMC8198004 DOI: 10.3390/molecules26113197] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/11/2021] [Accepted: 05/14/2021] [Indexed: 12/01/2022] Open
Abstract
PPARα is a ligand-dependent transcription factor and its activation is known to play an important role in cell defense through anti-inflammatory and antioxidant effects. MHY3200 (2-[4-(5-chlorobenzo[d]thiazol-2-yl)phenoxy]-2,2-difluoroacetic acid), a novel benzothiazole-derived peroxisome proliferator-activated receptor α (PPARα) agonist, is a synthesized PPARα activator. This study examined the beneficial effects of MHY3200 on age-associated alterations in reactive oxygen species (ROS)/Akt/forkhead box (FoxO) 1 signaling in rat kidneys. Young (7-month-old) and old (22-month-old) rats were treated with MHY3200 (1 mg/kg body weight/day or 3 mg/kg body weight/day) for two weeks. MHY3200 treatment led to a notable decrease in triglyceride and insulin levels in serum from old rats. The elevated kidney ROS level, serum insulin level, and Akt phosphorylation in old rats were reduced following MHY3200 treatment; moreover, FoxO1 phosphorylation increased. MHY3200 treatment led to the increased level of FoxO1 and its target gene, MnSOD. MHY3200 suppressed cyclooxygenase-2 expression by activating PPARα and inhibiting the activation of nuclear factor-κB (NF-κB) in the kidneys of old rats. Our results suggest that MHY3200 ameliorates age-associated renal inflammation by regulating NF-κB and FoxO1 via ROS/Akt signaling.
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Affiliation(s)
- Min Jo Kim
- Department of Pharmacy, College of Pharmacy, Pusan National University, Geumjeong-gu, Busan 46241, Korea; (M.J.K.); (D.H.K.); (E.B.)
| | - Dae Hyun Kim
- Department of Pharmacy, College of Pharmacy, Pusan National University, Geumjeong-gu, Busan 46241, Korea; (M.J.K.); (D.H.K.); (E.B.)
| | - EunJin Bang
- Department of Pharmacy, College of Pharmacy, Pusan National University, Geumjeong-gu, Busan 46241, Korea; (M.J.K.); (D.H.K.); (E.B.)
| | - Sang Gyun Noh
- Interdisciplinary Research Programme of Bioinformatics and Longevity Science, Department of Pharmacy, College of Pharmacy, Pusan National University, Geumjeong-gu, Busan 46241, Korea;
| | - Pusoon Chun
- College of Pharmacy, Inje University, Gimhae 50834, Gyeongsangnam-do, Korea;
| | - Takako Yokozawa
- Graduate School Science and Engineering for Research, University of Toyama, Toyama 930-8555, Japan;
| | - Hyung Ryong Moon
- Department of Pharmacy, College of Pharmacy, Pusan National University, Geumjeong-gu, Busan 46241, Korea; (M.J.K.); (D.H.K.); (E.B.)
| | - Hae Young Chung
- Department of Pharmacy, College of Pharmacy, Pusan National University, Geumjeong-gu, Busan 46241, Korea; (M.J.K.); (D.H.K.); (E.B.)
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Dendranthema zawadskii var. lucidum (Nakai) J.H. Park Extract Inhibits Cellular Senescence in Human Dermal Fibroblasts and Aging-Related Inflammation in Rats. Processes (Basel) 2021. [DOI: 10.3390/pr9050801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Senescence is the phenomenon by which physiological functions of organisms degenerate with time. Cellular senescence is marked by an inhibition of cell cycle progression. Beta-galactosidase accumulates in the lysosomes of aged cells. In this study, human dermal fibroblast cells (HDFs) were treated with 0.5 μM doxorubicin for 4 h to induce cellular senescence. Senescence-associated beta-galactosidase (SA-β-gal) activity was then measured 72 h after treatment with aerial parts of Dendranthema zawadskii var. lucidum (Nakai) J.H. Park (DZ) extract. Treatment with DZ extract significantly decreased SA-β-gal activity in a dose-dependent manner in HDFs. Additionally, DZ extract treatment reduced age-related oxidative stress and inflammation in the aortas of aged rats. The reactive oxygen species (ROS) levels in aortas of aged control rats were higher than those in young rats. However, DZ extract-fed aged rats showed significantly lower ROS levels than the aged control rats. When the aged rats were treated with DZ extract at either 0.2 or 1.0 mg∙kg−1∙day−1, NF-κB levels in aorta tissue decreased significantly compared to those in aorta tissue of the aged control rats without DZ treatment. In addition, DZ extract-fed aged rat aortas showed significant reductions in expression of iNOS and COX-2 induced by NF-κB translocation. Therefore, these results suggest that DZ effectively inhibited senescence-related NF-κB activation and inflammation. DZ extract may have a role in the prevention of the vascular inflammatory responses that occur during vascular aging.
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Galdi F, Pedone C, Antonelli Incalzi R. Thromboembolic disease: a geriatric syndrome. JOURNAL OF GERONTOLOGY AND GERIATRICS 2020. [DOI: 10.36150/2499-6564-437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Goldin CJ, Vázquez R, Polack FP, Alvarez-Paggi D. Identifying pathophysiological bases of disease in COVID-19. TRANSLATIONAL MEDICINE COMMUNICATIONS 2020; 5:15. [PMID: 32984543 PMCID: PMC7506209 DOI: 10.1186/s41231-020-00067-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 09/15/2020] [Indexed: 05/14/2023]
Abstract
COVID-19 is an infectious disease caused by the SARS-CoV-2 virus that can affect lung physiology encompassing a wide spectrum of severities, ranging from asymptomatic and mild symptoms to severe and fatal cases; the latter including massive neutrophil infiltration, stroke and multiple organ failure. Despite many recents findings, a clear mechanistic description underlying symptomatology is lacking. In this article, we thoroughly review the available data involving risk factors, age, gender, comorbidities, symptoms of disease, cellular and molecular mechanisms and the details behind host/pathogen interaction that hints at the existence of different pathophysiological mechanisms of disease. There is clear evidence that, by targeting the angiotensin-converting enzyme II (ACE2) -its natural receptor-, SARS-CoV-2 would mainly affect the renin-angiotensin-aldosterone system (RAAS), whose imbalance triggers diverse symptomatology-associated pathological processes. Downstream actors of the RAAS cascade are identified, and their interaction with risk factors and comorbidities are presented, rationalizing why a specific subgroup of individuals that present already lower ACE2 levels is particularly more susceptible to severe forms of disease. Finally, the notion of endotype discovery in the context of COVID-19 is introduced. We hypothesize that COVID-19, and its associated spectrum of severities, is an umbrella term covering different pathophysiological mechanisms (endotypes). This approach should dramatically accelerate our understanding and treatment of disease(s), enabling further discovery of pathophysiological mechanisms and leading to the identification of specific groups of patients that may benefit from personalized treatments.
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Affiliation(s)
- Carla J. Goldin
- INFANT Foundation, Buenos Aires, Argentina
- CONICET, Buenos Aires, Argentina
| | - Ramiro Vázquez
- Early Drug Development Group (E2DG), Boulogne-Billancourt, France
- Fondazione Istituto Italiano di Tecnologia, Milan, Italy
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DanQing L, YuJie G, ChengPeng Z, HongZhi D, Yi H, BiSheng H, Yan C. N-butanol extract of Hedyotis diffusa protects transgenic Caenorhabditis elegans from Aβ-induced toxicity. Phytother Res 2020; 35:1048-1061. [PMID: 32924204 DOI: 10.1002/ptr.6871] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 07/09/2020] [Accepted: 08/21/2020] [Indexed: 12/15/2022]
Abstract
Hedyotis diffusa Willd (Rubiaceae) is a widely used and resourceful traditional Chinese medicine that exerts protection against aging and age-related diseases. However, the underlying mechanisms of the protective effects remain largely unclear. Alzheimer's disease (AD) is an age-related neurodegenerative disease, of which β-amyloid (Aβ)-induced toxicity has been suggested as a main cause. Herein, we use the transgenic Caenorhabditis elegans CL4176, CL2006, and CL2355 strains, which express human Aβ1-42 peptide, to investigate the effects and the possible mechanisms of n-butanol extract of H.diffusa (HDB)-mediated protection against Aβ toxicity in vivo. During the experiments, a method of quality control for HDB was established by HPLC. Additionally, we examined the effects of HBD on gene expression changes with qRT-PCR, aggregation of Aβ plagues with thioflavin-S staining, and protein detection with GFP labeling. HDB improved lifespan, locomotion, and stress resistance. Further study showed that HDB decreased paralysis, the accumulation of ROS, and AChE activity. Moreover, HDB suppressed neuronal Aβ-expression-induced defects in chemotaxis behavior and increased SOD activity. HDB also downregulated the Aβ mRNA level and decreased the number of Aβ deposits. Furthermore, HDB increased the expression levels of sod-3, daf-16, hsf-1, and hsp-16.2 gene and upregulated hsp-16.2::GFP and gst-4::GFP expression. Taken together, these results suggest that HDB may protect against Aβ-induced toxicity in C. elegans via the insulin/insulin-like growth factor-1 (IGF-1) signaling pathway.
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Affiliation(s)
- Li DanQing
- Key Laboratory of Education Ministry on Traditional Chinese Medicine Resource and Compound Prescription, Hubei University of Chinese Medicine, Wuhan, China
| | - Guo YuJie
- Key Laboratory of Education Ministry on Traditional Chinese Medicine Resource and Compound Prescription, Hubei University of Chinese Medicine, Wuhan, China
| | - Zhang ChengPeng
- Key Laboratory of Education Ministry on Traditional Chinese Medicine Resource and Compound Prescription, Hubei University of Chinese Medicine, Wuhan, China
| | - Du HongZhi
- Key Laboratory of Education Ministry on Traditional Chinese Medicine Resource and Compound Prescription, Hubei University of Chinese Medicine, Wuhan, China
| | - Hong Yi
- Key Laboratory of Education Ministry on Traditional Chinese Medicine Resource and Compound Prescription, Hubei University of Chinese Medicine, Wuhan, China
| | - Huang BiSheng
- Key Laboratory of Education Ministry on Traditional Chinese Medicine Resource and Compound Prescription, Hubei University of Chinese Medicine, Wuhan, China
| | - Cao Yan
- Key Laboratory of Education Ministry on Traditional Chinese Medicine Resource and Compound Prescription, Hubei University of Chinese Medicine, Wuhan, China
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MHY2013 Modulates Age-related Inflammation and Insulin Resistance by Suppressing the Akt/FOXO1/IL-1β Axis and MAPK-mediated NF-κB Signaling in Aged Rat Liver. Appl Immunohistochem Mol Morphol 2020; 28:579-592. [PMID: 32902936 DOI: 10.1097/pai.0000000000000782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Chronic inflammation is a major risk factor underlying aging and age-associated diseases. It impairs normal lipid accumulation, adipose tissue function, and mitochondrial function, which eventually lead to insulin resistance. Peroxisome proliferator-activated receptors (PPARs) critically regulate gluconeogenesis, lipid metabolism, and the lipid absorption and breakdown process, and PPAR activity decreases in the liver during aging. In the present study, we investigated the ability of 2-(4-(5,6-methylenedioxybenzo[d]thiazol-2-yl)-2-methylphenoxy)-2-methylpropanoic acid (MHY2013), synthesized PPARα/PPARβ/PPARγ pan agonist, to suppress the inflammatory response and attenuate insulin resistance in aged rat liver. Six- and 20-month-old rats were divided into 4 groups: young and old rats fed ad libitum; and old rats fed ad libitum supplemented with MHY2013 (1 mg and 5 mg/kg/d for 4 wk). We found that MHY2013 supplementation efficiently downregulated the activity of nuclear factor-κB through JNK/ERK/p38 mitogen-activated protein kinase signaling in the liver of aged rats. In addition, MHY2013 treatment increased hepatic insulin signaling, and the downstream signaling activity of FOXO1, which is negatively regulated by Akt. Downregulation of Akt increases expression of FOXO1, which acts as a transcription factor and increases transcription of interleukin-1β, leading to hepatic inflammation. The major finding of this study is that MHY2013 acts as a therapeutic agent against age-related inflammation associated with insulin resistance by activating PPARα, PPARβ, and PPARγ. Thus, the study provides evidence for the anti-inflammatory properties of MHY2013, and the role it plays in the regulation of age-related alterations in signal transduction pathways.
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Levstek T, Kozjek E, Dolžan V, Trebušak Podkrajšek K. Telomere Attrition in Neurodegenerative Disorders. Front Cell Neurosci 2020; 14:219. [PMID: 32760251 PMCID: PMC7373805 DOI: 10.3389/fncel.2020.00219] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 06/19/2020] [Indexed: 12/13/2022] Open
Abstract
Telomere attrition is increased in various disorders and is therefore a potential biomarker for diagnosis and/or prognosis of these disorders. The contribution of telomere attrition in the pathogenesis of neurodegenerative disorders is yet to be fully elucidated. We are reviewing the current knowledge regarding the telomere biology in two common neurodegenerative disorders, Alzheimer's disease (AD), and Parkinson's disease (PD). Furthermore, we are discussing future prospective of telomere research in these disorders. The majority of studies reported consistent evidence of the accelerated telomere attrition in AD patients, possibly in association with elevated oxidative stress levels. On the other hand in PD, various studies reported contradictory evidence regarding telomere attrition. Consequently, due to the low specificity and sensitivity, the clinical benefit of telomere length as a biomarker of neurodegenerative disease development and progression is not yet recognized. Nevertheless, longitudinal studies in large carefully selected cohorts might provide further elucidation of the complex involvement of the telomeres in the pathogenesis of neurodegenerative diseases. Telomere length maintenance is a complex process characterized by environmental, genetic, and epigenetic determinants. Thus, in addition to the selection of the study cohort, also the selection of analytical methods and types of biological samples for evaluation of the telomere attrition is of utmost importance.
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Affiliation(s)
- Tina Levstek
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Eva Kozjek
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Vita Dolžan
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Katarina Trebušak Podkrajšek
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
- Clinical Institute for Special Laboratory Diagnostics, University Children’s Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia
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Kulshrestha R, Singh H, Pandey A, Soundarya D, Jaggi AS, Ravi K. Differential expression of caveolin-1 during pathogenesis of combined pulmonary fibrosis and emphysema: Effect of phosphodiesterase-5 inhibitor. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165802. [PMID: 32311453 DOI: 10.1016/j.bbadis.2020.165802] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 03/20/2020] [Accepted: 04/13/2020] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Combined pulmonary fibrosis and emphysema (CPFE) is a relatively new entity within the spectrum of cigarette smoke induced lung disorders. Currently there is no consensus about its treatment. We hypothesized that caveolin-1 critically determines the parenchymal and vascular remodeling leading to the development of CPFE. We assessed the effect of therapeutic targeting of caveolin-1 in mesenchymal and endothelial cells by the phosphodiesterase-5 inhibitor, sildenafil. METHODS Male Wistar rats (n = 168) were exposed to; room air (control); bleomycin (7 U/kg), bleomycin+sildenafil (50 mg/kg/day P.O.), cigarette smoke (CS) (4 Gold Flake 69 mm/day), CS + sildenafil, CS + bleomycin, CS + bleomycin+sildenafil. Animals were euthanized at 8, 9, 11, 12 weeks and lung histopathological changes, collagen deposition, ROS, Xanthine oxidase, caveolin-1 determined. RESULTS Cigarette smoke causes progressive ROS accumulation, caveolin-1 up-regulation in alveolar epithelial cells, alveolar macrophages, peribronchiolar fibroblasts, endothelial and vascular smooth muscle cells, interstitial inflammation and emphysema. Sildenafil reduces oxidative stress, parenchymal caveolin-1 and attenuates emphysema caused by CS. Bleomycin increases lung ROS and downregulates caveolin-1 leading to fibroblast proliferation and fibrosis. Combined cigarette smoke and bleomycin exposure, results in differential caveolin-1 expression and heterogeneous parenchymal remodeling with alternating areas of emphysema and fibrosis. Increased caveolin-1 induces premature senescence of lung fibroblasts and emphysema. Decreased caveolin-1 is associated with propagation of EMT and fibrosis. Sildenafil attenuates the parenchymal remodeling however it is not effective in reducing VSMC hypertrophy in combined group. CONCLUSION CPFE is characterized by heterogenous parenchymal remodeling and differential caveolin-1 expression. Sildenafil therapy attenuates parenchymal pathologies in CPFE. Additional therapy is however needed for attenuating VSMC remodeling.
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Affiliation(s)
- R Kulshrestha
- Department of Pathology, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India.
| | - H Singh
- Department of Pathology, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India
| | - A Pandey
- Department of Pathology, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India
| | - D Soundarya
- Department of Pathology, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India
| | - A S Jaggi
- Dept of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India
| | - K Ravi
- Department of Physiology, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India
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Timing of Calorie Restriction in Mice Impacts Host Metabolic Phenotype with Correlative Changes in Gut Microbiota. mSystems 2019; 4:4/6/e00348-19. [PMID: 31796564 PMCID: PMC6890928 DOI: 10.1128/msystems.00348-19] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Aberrant feeding patterns whereby people eat more frequently throughout the day and with a bias toward late-night eating are prevalent in society today. However, whether restriction of food to daytime in comparison to nighttime, coupled with restricted calorie intake, can influence gut microbiota, metabolism, and overall health requires further investigation. We surveyed the effects of the shift in feeding time on gut microbiota and metabolic phenotype in calorie-restricted mice and found that avoiding eating during the rest period may generate more beneficial effects in mice. This work strengthens the evidence for using “when to eat” as an intervention to improve health during calorie restriction. Calorie restriction (CR) is accompanied by self-imposed daily restriction of food intake and an extended fasting period between meals. The impact of restricting feeding to the dark or light phase on the effects of CR remains elusive. Here, light-fed CR mice showed physiological changes, such as muscle loss, concomitant with changes in the gut microbiota structure and composition. After switching to ad libitum access to food, light-fed mice had a period of food-craving behavior and short-lived physiological changes, while dark-fed mice displayed lasting changes in fat accumulation, glucose metabolism, intestinal barrier function, and systemic inflammatory markers. Moreover, the gut microbiota was modulated by when the food was consumed, and the most abundant Lactobacillus operational taxonomic unit (OTU) promoted by CR was enhanced in dark-fed mice. After switching to ad libitum feeding, the gut microbiota of dark-fed mice returned to the state resembling that of mice fed normal chow ad libitum, but that of light-fed mice was still significantly different from the other two groups. Together, these data indicate that for CR, restricting food consumption to the active phase brought better metabolic phenotype associated with potentially beneficial structural shifts in the gut microbiota. IMPORTANCE Aberrant feeding patterns whereby people eat more frequently throughout the day and with a bias toward late-night eating are prevalent in society today. However, whether restriction of food to daytime in comparison to nighttime, coupled with restricted calorie intake, can influence gut microbiota, metabolism, and overall health requires further investigation. We surveyed the effects of the shift in feeding time on gut microbiota and metabolic phenotype in calorie-restricted mice and found that avoiding eating during the rest period may generate more beneficial effects in mice. This work strengthens the evidence for using “when to eat” as an intervention to improve health during calorie restriction.
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Cachexia induced by Yoshida ascites hepatoma in Wistar rats is not associated with inflammatory response in the spleen or brain. J Neuroimmunol 2019; 337:577068. [PMID: 31606594 DOI: 10.1016/j.jneuroim.2019.577068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 08/25/2019] [Accepted: 09/11/2019] [Indexed: 12/11/2022]
Abstract
Recent data indicate that peripheral, as well as hypothalamic pro-inflammatory cytokines play an important role in the development of cancer cachexia. However, there are only a few studies simultaneously investigating the expression of inflammatory molecules in both the periphery and hypothalamic structures in animal models of cancer cachexia. Therefore, using the Yoshida ascites hepatoma rat's model of cancer cachexia we investigated the gene expression of inflammatory markers in the spleen along with the paraventricular and arcuate nuclei, two hypothalamic structures that are involved in regulating energy balance. In addition, we investigated the effect of intracerebroventricular administration of PS-1145 dihydrochloride (an Ikβ inhibitor) on the expression of selected inflammatory molecules in these hypothalamic nuclei and spleen. We observed significantly reduced food intake in tumor-bearing rats. Moreover, we found significantly decreased expression of IL-6 in the spleen as well as decreased NF-κB in the paraventricular nucleus of rats with Yoshida ascites hepatoma. Similarly, expression of TNF-α, IL-1β, NF-κB, and COX-2 in the arcuate nucleus was significantly reduced in tumor-bearing rats. Administration of PS-1145 dihydrochloride reduced only the gene expression of COX-2 in the hypothalamus. Based on our findings, we suggest that the growing Yoshida ascites hepatoma decreased food intake by mechanical compression of the gut and therefore this model is not suitable for investigation of the inflammation-related mechanisms of cancer cachexia development.
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Ashley N, Holgado AM. The autophagy gene product BEC-1 supports normal aging and neurodevelopment in Caenorhabditis elegans: Integration. MICROPUBLICATION BIOLOGY 2019; 2019:10.17912/micropub.biology.000102. [PMID: 32550427 PMCID: PMC7252298 DOI: 10.17912/micropub.biology.000102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 06/10/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Nicholas Ashley
- St. Edward's University, Department of Biological Sciences, Austin, TX 78704
| | - Andrea M Holgado
- St. Edward's University, Department of Biological Sciences, Austin, TX 78704
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Allen BD, Liao C, Shu J, Muglia LJ, Majzoub JA, Diaz V, Nelson JF. Hyperadrenocorticism of calorie restriction contributes to its anti-inflammatory action in mice. Aging Cell 2019; 18:e12944. [PMID: 30938024 PMCID: PMC6516174 DOI: 10.1111/acel.12944] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 01/26/2019] [Accepted: 02/18/2019] [Indexed: 11/30/2022] Open
Abstract
Calorie restriction (CR), which lengthens lifespan in many species, is associated with moderate hyperadrenocorticism and attenuated inflammation. Given the anti‐inflammatory action of glucocorticoids, we tested the hypothesis that the hyperadrenocorticism of CR contributes to its attenuated inflammatory response. We used a corticotropin‐releasing‐hormone knockout (CRHKO) mouse, which is glucocorticoid insufficient. There were four controls groups: CRHKO mice and wild‐type (WT) littermates fed either ad libitum (AL) or CR (60% of AL food intake), and three experimental groups: (a) AL‐fed CRHKO mice given corticosterone (CORT) in their drinking water titrated to match the integrated 24‐hr plasma CORT levels of AL‐fed WT mice, (b) CR‐fed CRHKO mice given CORT to match the 24‐hr CORT levels of AL‐fed WT mice, and (c) CR‐fed CHRKO mice given CORT to match the 24‐hr CORT levels of CR‐fed WT mice. Inflammation was measured volumetrically as footpad edema induced by carrageenan injection. As previously observed, CR attenuated footpad edema in WT mice. This attenuation was significantly blocked in CORT‐deficient CR‐fed CRHKO mice. Replacement of CORT in CR‐fed CRHKO mice to the elevated levels observed in CR‐fed WT mice, but not to the levels observed in AL‐fed WT mice, restored the anti‐inflammatory effect of CR. These results indicate that the hyperadrenocorticism of CR contributes to the anti‐inflammatory action of CR, which may in turn contribute to its life‐extending actions.
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Affiliation(s)
- Brian D. Allen
- Department of Cellular and Integrative Physiology University of Texas Health Science Center at San Antonio San Antonio Texas
- Barshop Institute for Longevity and Aging Studies The University of Texas Health Science Center at San Antonio San Antonio Texas
- Geriatric Research, Education and Clinical Center and Research Service South Texas Veterans Health Care System San Antonio Texas
| | - Chen‐Yu Liao
- Department of Cellular and Integrative Physiology University of Texas Health Science Center at San Antonio San Antonio Texas
- Barshop Institute for Longevity and Aging Studies The University of Texas Health Science Center at San Antonio San Antonio Texas
| | - Jianhua Shu
- Department of Cellular and Integrative Physiology University of Texas Health Science Center at San Antonio San Antonio Texas
- Barshop Institute for Longevity and Aging Studies The University of Texas Health Science Center at San Antonio San Antonio Texas
- Geriatric Research, Education and Clinical Center and Research Service South Texas Veterans Health Care System San Antonio Texas
| | - Louis J. Muglia
- Department of Molecular Biology and Pharmacology Washington University School of Medicine St. Louis Missouri
| | - Joseph A. Majzoub
- Division of Endocrinology, Department of Medicine Boston Children’s Hospital, Harvard Medical School Boston Massachusetts
| | - Vivian Diaz
- Barshop Institute for Longevity and Aging Studies The University of Texas Health Science Center at San Antonio San Antonio Texas
| | - James F. Nelson
- Department of Cellular and Integrative Physiology University of Texas Health Science Center at San Antonio San Antonio Texas
- Barshop Institute for Longevity and Aging Studies The University of Texas Health Science Center at San Antonio San Antonio Texas
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Chung HY, Kim DH, Lee EK, Chung KW, Chung S, Lee B, Seo AY, Chung JH, Jung YS, Im E, Lee J, Kim ND, Choi YJ, Im DS, Yu BP. Redefining Chronic Inflammation in Aging and Age-Related Diseases: Proposal of the Senoinflammation Concept. Aging Dis 2019; 10:367-382. [PMID: 31011483 PMCID: PMC6457053 DOI: 10.14336/ad.2018.0324] [Citation(s) in RCA: 275] [Impact Index Per Article: 55.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 03/24/2018] [Indexed: 12/13/2022] Open
Abstract
Age-associated chronic inflammation is characterized by unresolved and uncontrolled inflammation with multivariable low-grade, chronic and systemic responses that exacerbate the aging process and age-related chronic diseases. Currently, there are two major hypotheses related to the involvement of chronic inflammation in the aging process: molecular inflammation of aging and inflammaging. However, neither of these hypotheses satisfactorily addresses age-related chronic inflammation, considering the recent advances that have been made in inflammation research. A more comprehensive view of age-related inflammation, that has a scope beyond the conventional view, is therefore required. In this review, we discuss newly emerging data on multi-phase inflammatory networks and proinflammatory pathways as they relate to aging. We describe the age-related upregulation of nuclear factor (NF)-κB signaling, cytokines/chemokines, endoplasmic reticulum (ER) stress, inflammasome, and lipid accumulation. The later sections of this review present our expanded view of age-related senescent inflammation, a process we term "senoinflammation", that we propose here as a novel concept. As described in the discussion, senoinflammation provides a schema highlighting the important and ever-increasing roles of proinflammatory senescence-associated secretome, inflammasome, ER stress, TLRs, and microRNAs, which support the senoinflammation concept. It is hoped that this new concept of senoinflammation opens wider and deeper avenues for basic inflammation research and provides new insights into the anti-inflammatory therapeutic strategies targeting the multiple proinflammatory pathways and mediators and mediators that underlie the pathophysiological aging process.
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Affiliation(s)
- Hae Young Chung
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 609-735, Korea.
| | - Dae Hyun Kim
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 609-735, Korea.
| | - Eun Kyeong Lee
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 609-735, Korea.
- Pathological and Analytical Center, Korea Institute of Toxicology, Daejeon 34114, Korea.
| | - Ki Wung Chung
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 609-735, Korea.
| | - Sangwoon Chung
- Department of Internal Medicine, Pulmonary, Allergy, Critical Care & Sleep Medicine, The Ohio State University, Columbus, OH 43210, USA.
| | - Bonggi Lee
- Korean Medicine (KM)-Application Center, Korea Institute of Oriental Medicine (KIOM), Daegu 41062, Republic of Korea.
| | - Arnold Y. Seo
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA.
| | - Jae Heun Chung
- Department of Internal Medicine, Pusan National University Yangsan Hospital, Yangsan 50612, Korea.
| | - Young Suk Jung
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 609-735, Korea.
| | - Eunok Im
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 609-735, Korea.
| | - Jaewon Lee
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 609-735, Korea.
| | - Nam Deuk Kim
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 609-735, Korea.
| | - Yeon Ja Choi
- Department of Biopharmaceutical Engineering, Division of Chemistry and Biotechnology, Dongguk University, Gyeongju 38066, Korea.
| | - Dong Soon Im
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 609-735, Korea.
| | - Byung Pal Yu
- Department of Physiology, The University of Texas Health Science Center at San Antonio, TX 78229, USA.
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Depression caused by long-term stress regulates premature aging and is possibly associated with disruption of circadian rhythms in mice. Physiol Behav 2019; 199:100-110. [DOI: 10.1016/j.physbeh.2018.11.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 11/09/2018] [Accepted: 11/10/2018] [Indexed: 12/21/2022]
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Dietary Restriction and Neuroinflammation: A Potential Mechanistic Link. Int J Mol Sci 2019; 20:ijms20030464. [PMID: 30678217 PMCID: PMC6386998 DOI: 10.3390/ijms20030464] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 01/19/2019] [Indexed: 12/12/2022] Open
Abstract
Chronic neuroinflammation is a common feature of the aged brain, and its association with the major neurodegenerative changes involved in cognitive impairment and motor dysfunction is well established. One of the most potent antiaging interventions tested so far is dietary restriction (DR), which extends the lifespan in various organisms. Microglia and astrocytes are two major types of glial cells involved in the regulation of neuroinflammation. Accumulating evidence suggests that the age-related proinflammatory activation of astrocytes and microglia is attenuated under DR. However, the molecular mechanisms underlying DR-mediated regulation of neuroinflammation are not well understood. Here, we review the current understanding of the effects of DR on neuroinflammation and suggest an underlying mechanistic link between DR and neuroinflammation that may provide novel insights into the role of DR in aging and age-associated brain disorders.
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Neuroprotection by Paeoniflorin against Nuclear Factor Kappa B-Induced Neuroinflammation on Spinal Cord Injury. BIOMED RESEARCH INTERNATIONAL 2018; 2018:9865403. [PMID: 30627586 PMCID: PMC6304651 DOI: 10.1155/2018/9865403] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 10/23/2018] [Accepted: 10/25/2018] [Indexed: 01/22/2023]
Abstract
Background Acute spinal cord injury (SCI) is one of the most common and devastating causes of sensory or motor dysfunction. Nuclear factor-kappa B(NF-κB)-mediated neuroinflammatory responses, in addition to nitric oxide (NO), are key regulatory pathways in SCI. Paeoniflorin (PF), a major active component extracted from Paeonia roots, has been suggested to exert neuroprotective effects in the central nervous system. However, whether PF could improve the motor function after SCI in vivo is still unclear. Method Immunohistochemical analysis, western blot, real-time quantitative PCR, immunofluorescence staining, and histopathological and behavioral evaluation were used to explore the effects of paeoniflorin after SCI for 14 days. Results In this study, PF treatment significantly inhibited NF-κB activation and downregulated the expression of inducible nitric oxide synthase (iNOS), cyclooxygenase-2(COX-2), and Nogo-A. Comparing behavioral and histological changes in SCI and PF treatment groups, we found that PF treatment improved motor function recovery, attenuated the histopathological damage, and increased neuronal survival in the SCI model. PF treatment also reduced expression levels of Bax and c-caspase-3 and increased the expression level of Bcl-2 and cell viabilities. Upregulation of TNF-α, IL-6, and IL-1β after injury was also prevented by PF. Conclusion These results suggest that the neuroprotective effects of PF are related to the inhibition of the NF-κB signaling pathway. And PF may be a therapeutic strategy in spinal cord injury.
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Ma L, Shen Q, Yang S, Xie X, Xiao Q, Yu C, Cao L, Fu Z. Effect of chronic corticosterone-induced depression on circadian rhythms and age-related phenotypes in mice. Acta Biochim Biophys Sin (Shanghai) 2018; 50:1236-1246. [PMID: 30395149 DOI: 10.1093/abbs/gmy132] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Indexed: 12/18/2022] Open
Abstract
Disrupted circadian rhythms are a recognized effect of depression, and our previous article demonstrated an association between depression and premature aging, but the underlying mechanisms are not well understood. In the present study, we used a mouse model of chronic corticosterone (CORT)-treated depression to elucidate a mechanism by which depression may be associated with the circadian clock and mediate age-related phenotypes. Mice received a daily injection of 20 mg/kg CORT for 21 consecutive days, and the depression-like behaviors of mice were identified by the sucrose intake test, tail suspension test and open field test. Our findings indicated that CORT injection may be correlated with the circadian clock by impairing circadian rhythms or shifting the phase values of clock genes. We also showed that CORT-treated mice exhibited a significant gradual reduction in body weight gain with increased oxidative stress, including reduced activity of antioxidant-related enzymes, reduced glutathione:glutathione disulfide ratio and cytochrome (Cyt)-C level, and elevated reactive oxygen species content. Moreover, chronic CORT injection affected inflammatory responses, the production of mitochondrial ATP and telomere shortening, which may be associated with the Sirtuin 3 (SIRT3) signaling pathway. Additionally, chronic CORT injection disrupted the circadian rhythms of some indexes of aging phenotypes and altered the phase values of these indexes. Our findings suggest that psychologically stressful conditions such as depression are linked to changes in circadian rhythms and age-related phenotypes.
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Affiliation(s)
- Lingyan Ma
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Qichen Shen
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Song Yang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Xiaoxian Xie
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Qingfeng Xiao
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Chuanan Yu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Lisha Cao
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Zhengwei Fu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
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Pan F, Zhang L, Li M, Hu Y, Zeng B, Yuan H, Zhao L, Zhang C. Predominant gut Lactobacillus murinus strain mediates anti-inflammaging effects in calorie-restricted mice. MICROBIOME 2018; 6:54. [PMID: 29562943 PMCID: PMC5863386 DOI: 10.1186/s40168-018-0440-5] [Citation(s) in RCA: 125] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 03/13/2018] [Indexed: 05/12/2023]
Abstract
BACKGROUND Calorie restriction (CR), which has a potent anti-inflammaging effect, has been demonstrated to induce dramatic changes in the gut microbiota. Whether the modulated gut microbiota contributes to the attenuation of inflammation during CR is unknown, as are the members of the microbial community that may be key mediators of this process. RESULTS Here, we report that a unique Lactobacillus-predominated microbial community was rapidly attained in mice within 2 weeks of CR, which decreased the levels of circulating microbial antigens and systemic inflammatory markers such as tumour necrosis factor alpha (TNF-α). Lactobacillus murinus CR147, an isolate in the most abundant operational taxonomic unit (OTU) enriched by CR, downregulated interleukin-8 production in TNF-α-stimulated Caco-2 cells and significantly increased the lifespan and the brood size of the nematode Caenorhabditis elegans. In gnotobiotic mice colonized with the gut microbiota from old mice, this strain decreased their intestinal permeability and serum endotoxin load, consequently attenuating the inflammation induced by the old microbiota. CONCLUSIONS Our study demonstrated that a strain of Lactobacillus murinus was promoted in CR mice and causatively contributed to the attenuation of ageing-associated inflammation.
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Affiliation(s)
- Fengwei Pan
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240 China
| | - Liying Zhang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240 China
| | - Min Li
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240 China
| | - Yingxin Hu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240 China
| | - Benhua Zeng
- Department of Laboratory Animal Science, College of Basic Medical Sciences, Third Military Medical University, Chongqing, 400038 China
| | - Huijuan Yuan
- Henan Provincial People’s Hospital, Zhengzhou, 450003 Henan Province China
| | - Liping Zhao
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240 China
| | - Chenhong Zhang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240 China
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Manchishi SM, Cui RJ, Zou XH, Cheng ZQ, Li BJ. Effect of caloric restriction on depression. J Cell Mol Med 2018; 22:2528-2535. [PMID: 29465826 PMCID: PMC5908110 DOI: 10.1111/jcmm.13418] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 09/15/2017] [Indexed: 12/13/2022] Open
Abstract
Recently, most of evidence shows that caloric restriction could induce antidepressant‐like effects in animal model of depression. Based on studies of the brain–gut axis, some signal pathways were common between the control of caloric restriction and depression. However, the specific mechanism of the antidepressant‐like effects induced by caloric restriction remains unclear. Therefore, in this article, we summarized clinical and experimental studies of caloric restriction on depression. This review may provide a new therapeutic strategy for depression.
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Affiliation(s)
- Stephen Malunga Manchishi
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetics, The Second Hospital of Jilin University, Changchun, Jilin, China.,Department of Physiology, University of Cambridge, Cambridge, UK
| | - Ran Ji Cui
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetics, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Xiao Han Zou
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetics, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Zi Qian Cheng
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetics, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Bing Jin Li
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetics, The Second Hospital of Jilin University, Changchun, Jilin, China
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39
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Jang EJ, Kim DH, Lee B, Lee EK, Chung KW, Moon KM, Kim MJ, An HJ, Jeong JW, Kim YR, Yu BP, Chung HY. Activation of proinflammatory signaling by 4-hydroxynonenal-Src adducts in aged kidneys. Oncotarget 2018; 7:50864-50874. [PMID: 27472463 PMCID: PMC5239442 DOI: 10.18632/oncotarget.10854] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 07/17/2016] [Indexed: 11/25/2022] Open
Abstract
In our previous study, reactive 4-hydroxy-2-nonenal (4-HNE) was shown to activate Src (a non-receptor tyrosine kinase) by forming an adduct on binding with a specific residue of Src, leading to the activation of proinflammatory signaling pathways in cultured cells. However, to date, the deleterious roles of 4-HNE in inflammatory signaling activation in kidneys during aging have not been explored. The purpose of the present study was to document the mechanisms by which 4-HNE induces inflammation in the kidney during aging. Initial experiments revealed that activated nuclear factor-κB (NF-κB) expression was caused by 4-HNE activation, which suppressed transcriptional activity in the aged kidney. Treatment of human umbilical vein endothelial cells with 4-HNE revealed that Src caused senescence via NF-κB activation. Furthermore, our immunohistochemistry data showed that 4-HNE-adducted Src significantly increased in aged kidney tissues. The data showed age-related upregulation of downstream signaling molecules such as mitogen activated protein kinases (MAPKs), activator protein-1 (AP-1), NF-κB, and COX-2 in a cell culture cell system. Taken together, the results of this study show that the formation of adducts between 4-HNE and Src activates inflammatory signaling pathways in the aged kidney, contributing to age-related nephropathy.
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Affiliation(s)
- Eun Ji Jang
- Department of Pharmacy, Molecular Inflammation Research Center for Aging Intervention (MRCA), Pusan National University, Busan, Republic of Korea
| | - Dae Hyun Kim
- Department of Pharmacy, Molecular Inflammation Research Center for Aging Intervention (MRCA), Pusan National University, Busan, Republic of Korea
| | - Bonggi Lee
- Department of Pharmacy, Molecular Inflammation Research Center for Aging Intervention (MRCA), Pusan National University, Busan, Republic of Korea
| | - Eun Kyeong Lee
- Department of Pharmacy, Molecular Inflammation Research Center for Aging Intervention (MRCA), Pusan National University, Busan, Republic of Korea
| | - Ki Wung Chung
- Department of Pharmacy, Molecular Inflammation Research Center for Aging Intervention (MRCA), Pusan National University, Busan, Republic of Korea
| | - Kyoung Mi Moon
- Department of Pharmacy, Molecular Inflammation Research Center for Aging Intervention (MRCA), Pusan National University, Busan, Republic of Korea
| | - Min Jo Kim
- Department of Pharmacy, Molecular Inflammation Research Center for Aging Intervention (MRCA), Pusan National University, Busan, Republic of Korea
| | - Hye Jin An
- Department of Pharmacy, Molecular Inflammation Research Center for Aging Intervention (MRCA), Pusan National University, Busan, Republic of Korea
| | - Ji Won Jeong
- Department of Pharmacy, Molecular Inflammation Research Center for Aging Intervention (MRCA), Pusan National University, Busan, Republic of Korea
| | - Ye Ra Kim
- Department of Pharmacy, Molecular Inflammation Research Center for Aging Intervention (MRCA), Pusan National University, Busan, Republic of Korea
| | - Byung Pal Yu
- Department of Physiology, The University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States of America
| | - Hae Young Chung
- Department of Pharmacy, Molecular Inflammation Research Center for Aging Intervention (MRCA), Pusan National University, Busan, Republic of Korea
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Park D, Kim BC, Kim CH, Choi YJ, Jeong HO, Kim ME, Lee JS, Park MH, Chung KW, Kim DH, Lee J, Im DS, Yoon S, Lee S, Yu BP, Bhak J, Chung HY. RNA-Seq analysis reveals new evidence for inflammation-related changes in aged kidney. Oncotarget 2017; 7:30037-48. [PMID: 27153548 PMCID: PMC5058662 DOI: 10.18632/oncotarget.9152] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 04/18/2016] [Indexed: 01/10/2023] Open
Abstract
Age-related dysregulated inflammation plays an essential role as a major risk factor underlying the pathophysiological aging process. To better understand how inflammatory processes are related to aging at the molecular level, we sequenced the transcriptome of young and aged rat kidney using RNA-Seq to detect known genes, novel genes, and alternative splicing events that are differentially expressed. By comparing young (6 months of age) and old (25 months of age) rats, we detected 722 up-regulated genes and 111 down-regulated genes. In the aged rats, we found 32 novel genes and 107 alternatively spliced genes. Notably, 6.6% of the up-regulated genes were related to inflammation (P < 2.2 × 10-16, Fisher exact t-test); 15.6% were novel genes with functional protein domains (P = 1.4 × 10-5); and 6.5% were genes showing alternative splicing events (P = 3.3 × 10-4). Based on the results of pathway analysis, we detected the involvement of inflammation-related pathways such as cytokines (P = 4.4 × 10-16), which were found up-regulated in the aged rats. Furthermore, an up-regulated inflammatory gene analysis identified the involvement of transcription factors, such as STAT4, EGR1, and FOSL1, which regulate cancer as well as inflammation in aging processes. Thus, RNA changes in these pathways support their involvement in the pro-inflammatory status during aging. We propose that whole RNA-Seq is a useful tool to identify novel genes and alternative splicing events by documenting broadly implicated inflammation-related genes involved in aging processes.
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Affiliation(s)
- Daeui Park
- Molecular Inflammation Research Center for Aging Intervention, Pusan National University, Busan, Korea.,Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, Korea.,Human and Environmental Toxicology, School of Engineering, University of Science and Technology, Daejeon, Korea
| | - Byoung-Chul Kim
- Molecular Inflammation Research Center for Aging Intervention, Pusan National University, Busan, Korea.,Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, Korea
| | | | - Yeon Ja Choi
- Molecular Inflammation Research Center for Aging Intervention, Pusan National University, Busan, Korea
| | - Hyoung Oh Jeong
- Molecular Inflammation Research Center for Aging Intervention, Pusan National University, Busan, Korea
| | - Mi Eun Kim
- Department of Biology, College of Natural Sciences, Chosun University, Gwangju, Korea
| | - Jun Sik Lee
- Department of Biology, College of Natural Sciences, Chosun University, Gwangju, Korea
| | - Min Hi Park
- Molecular Inflammation Research Center for Aging Intervention, Pusan National University, Busan, Korea
| | - Ki Wung Chung
- Molecular Inflammation Research Center for Aging Intervention, Pusan National University, Busan, Korea
| | - Dae Hyun Kim
- Molecular Inflammation Research Center for Aging Intervention, Pusan National University, Busan, Korea
| | - Jaewon Lee
- Molecular Inflammation Research Center for Aging Intervention, Pusan National University, Busan, Korea
| | - Dong-Soon Im
- Molecular Inflammation Research Center for Aging Intervention, Pusan National University, Busan, Korea
| | - Seokjoo Yoon
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, Korea.,Human and Environmental Toxicology, School of Engineering, University of Science and Technology, Daejeon, Korea
| | - Sunghoon Lee
- Personal Genomics Institute,Genome Research Foundation, Suwon, Korea
| | - Byung Pal Yu
- Department of Physiology, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Jong Bhak
- Personal Genomics Institute,Genome Research Foundation, Suwon, Korea
| | - Hae Young Chung
- Molecular Inflammation Research Center for Aging Intervention, Pusan National University, Busan, Korea
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Haghighatdoost F, Nobakht M. Gh BF. Effect of conjugated linoleic acid on blood inflammatory markers: a systematic review and meta-analysis on randomized controlled trials. Eur J Clin Nutr 2017; 72:1071-1082. [DOI: 10.1038/s41430-017-0048-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 10/10/2017] [Accepted: 11/06/2017] [Indexed: 01/05/2023]
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42
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Bettedi L, Foukas LC. Growth factor, energy and nutrient sensing signalling pathways in metabolic ageing. Biogerontology 2017; 18:913-929. [PMID: 28795262 PMCID: PMC5684302 DOI: 10.1007/s10522-017-9724-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 07/21/2017] [Indexed: 01/24/2023]
Abstract
The field of the biology of ageing has received increasing attention from a biomedical point of view over the past decades. The main reason has been the realisation that increases in human population life expectancy are accompanied by late onset diseases. Indeed, ageing is the most important risk factor for a number of neoplastic, neurodegenerative and metabolic pathologies. Advances in the knowledge of the genetics of ageing, mainly through research in model organisms, have implicated various cellular processes and the respective signalling pathways that regulate them in cellular and organismal ageing. Associated with ageing is a dysregulation of metabolic homeostasis usually manifested as age-related obesity, diminished insulin sensitivity and impaired glucose and lipid homeostasis. Metabolic deterioration contributes to the ageing phenotype and metabolic pathologies are thought to be one of the main factors limiting the potential for lifespan extension. Great efforts have been directed towards identifying pharmacological interventions with the potential to improve healthspan and a number of natural and synthetic compounds have shown promise in achieving beneficial metabolic effects.
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Affiliation(s)
- Lucia Bettedi
- Institute of Healthy Ageing and Department of Genetics, Evolution and Environment, University College London, London, UK
- Cell Biology and Neurobiology Branch, National Institutes of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Lazaros C Foukas
- Institute of Healthy Ageing and Department of Genetics, Evolution and Environment, University College London, London, UK.
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43
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The effects of graded levels of calorie restriction: VII. Topological rearrangement of hypothalamic aging networks. Aging (Albany NY) 2017; 8:917-32. [PMID: 27115072 PMCID: PMC4931844 DOI: 10.18632/aging.100944] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 03/31/2016] [Indexed: 12/31/2022]
Abstract
Connectivity in a gene-gene network declines with age, typically within gene clusters. We explored the effect of short-term (3 months) graded calorie restriction (CR) (up to 40 %) on network structure of aging-associated genes in the murine hypothalamus by using conditional mutual information. The networks showed a topological rearrangement when exposed to graded CR with a higher relative within cluster connectivity at 40CR. We observed changes in gene centrality concordant with changes in CR level, with Ppargc1a, and Ppt1 having increased centrality and Etfdh, Traf3 and Abcc1 decreased centrality as CR increased. This change in gene centrality in a graded manner with CR, occurred in the absence of parallel changes in gene expression levels. This study emphasizes the importance of augmenting traditional differential gene expression analyses to better understand structural changes in the transcriptome. Overall our results suggested that CR induced changes in centrality of biological relevant genes that play an important role in preventing the age-associated loss of network integrity irrespective of their gene expression levels.
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44
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Picca A, Pesce V, Lezza AMS. Does eating less make you live longer and better? An update on calorie restriction. Clin Interv Aging 2017; 12:1887-1902. [PMID: 29184395 PMCID: PMC5685139 DOI: 10.2147/cia.s126458] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The complexity of aging is hard to be captured. However, apart from its tissue-specific features, a structural and functional progressive decline of the whole organism that leads to death, often preceded by a phase of chronic morbidity, characterizes the common process of aging. Therefore, the research goal of scientists in the field moved from the search for strategies able to extend longevity to those ensuring healthy aging associated with a longer lifespan referred to as “healthspan”. The aging process is plastic and can be tuned by multiple mechanisms including dietary and genetic interventions. To date, the most robust approach, efficient in warding off the cellular markers of aging, is calorie restriction (CR). Here, after a preliminary presentation of the major debate originated by CR, we concisely overviewed the recent results of CR treatment on humans. We also provided an update on the molecular mechanisms involved by CR and the effects on some of the age-associated cellular markers. We finally reviewed a number of tested CR mimetics and concluded with an evaluation of future applications of such dietary approach.
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Affiliation(s)
- Anna Picca
- Department of Geriatrics, Neuroscience and Orthopedics, Catholic University of the Sacred Heart School of Medicine, Rome
| | - Vito Pesce
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, Bari, Italy
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45
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Watson N, Ding B, Zhu X, Frisina RD. Chronic inflammation - inflammaging - in the ageing cochlea: A novel target for future presbycusis therapy. Ageing Res Rev 2017; 40:142-148. [PMID: 29017893 DOI: 10.1016/j.arr.2017.10.002] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 10/04/2017] [Accepted: 10/06/2017] [Indexed: 12/11/2022]
Abstract
Chronic, low-grade inflammation, or inflammaging, is a crucial contributor to various age-related pathologies and natural processes in aging tissue, including the nervous system. Over the past two decades, much effort has been done to understand the mechanisms of inflammaging in disease models such as type II diabetes, cardiovascular disease, Alzheimer's disease, Parkinson's disease, and others. However, despite being the most prevalent neurodegenerative disorder, the number one communication disorder, and one of the top three chronic medical conditions of our aged population; little research has been conducted on the potential role of inflammation in age-related hearing loss (ARHL). Recently, it has been suggested that there is an inflammatory presence in the cochlea, perhaps involving diffusion processes of the blood-brain barrier as it relates to the inner ear. Recent research has found correlations between hearing loss and markers such as C-reactive protein, IL-6, and TNF-α indicating inflammatory status in human case-cohort studies. However, there have been very few reports of in vivo research investigating the role of chronic inflammation's in hearing loss in the aging cochlea. Future research directed at better understanding the mechanisms of inflammation in the cochlea as well as the natural changes acquired with aging may provide a better understanding of how this process can accelerate presbycusis. Animal model experimentation and pre-clinical studies designed to recognize and characterize cochlear inflammatory mechanisms may suggest novel treatment strategies for preventing or treating ARHL. In this review, we seek to summarize key research in chronic inflammation, discuss its implications for possible roles in ARHL, and finally suggest directions for future investigations.
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Affiliation(s)
- Nathan Watson
- Dept. Biomedical Engineering, Fitzpatrick Center (FCIEMAS), 101 Science Drive, Campus Box 90281, Duke University, Durham, NC 27708-0281, USA; Global Center for Hearing & Speech Res., 3802 Spectrum Blvd., BPB Suite 210, University of South Florida Res. Park, Tampa, FL 33612, USA; Dept. Chemical & Biomedical Engineering, 4202 E Fowler Avenue, ENB 118 University of South Florida, Tampa, FL 33620, USA
| | - Bo Ding
- Dept. Communication Sciences & Disorders, 4202 E. Fowler Avenue, PCD1017 University of South Florida, Tampa, FL 33620-8200, USA; Global Center for Hearing & Speech Res., 3802 Spectrum Blvd., BPB Suite 210, University of South Florida Res. Park, Tampa, FL 33612, USA
| | - Xiaoxia Zhu
- Dept. Communication Sciences & Disorders, 4202 E. Fowler Avenue, PCD1017 University of South Florida, Tampa, FL 33620-8200, USA; Dept. Chemical & Biomedical Engineering, 4202 E Fowler Avenue, ENB 118 University of South Florida, Tampa, FL 33620, USA
| | - Robert D Frisina
- Dept. Communication Sciences & Disorders, 4202 E. Fowler Avenue, PCD1017 University of South Florida, Tampa, FL 33620-8200, USA; Global Center for Hearing & Speech Res., 3802 Spectrum Blvd., BPB Suite 210, University of South Florida Res. Park, Tampa, FL 33612, USA; Dept. Chemical & Biomedical Engineering, 4202 E Fowler Avenue, ENB 118 University of South Florida, Tampa, FL 33620, USA.
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Calder PC, Bosco N, Bourdet-Sicard R, Capuron L, Delzenne N, Doré J, Franceschi C, Lehtinen MJ, Recker T, Salvioli S, Visioli F. Health relevance of the modification of low grade inflammation in ageing (inflammageing) and the role of nutrition. Ageing Res Rev 2017; 40:95-119. [PMID: 28899766 DOI: 10.1016/j.arr.2017.09.001] [Citation(s) in RCA: 277] [Impact Index Per Article: 39.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 08/03/2017] [Accepted: 09/05/2017] [Indexed: 02/06/2023]
Abstract
Ageing of the global population has become a public health concern with an important socio-economic dimension. Ageing is characterized by an increase in the concentration of inflammatory markers in the bloodstream, a phenomenon that has been termed "inflammageing". The inflammatory response is beneficial as an acute, transient reaction to harmful conditions, facilitating the defense, repair, turnover and adaptation of many tissues. However, chronic and low grade inflammation is likely to be detrimental for many tissues and for normal functions. We provide an overview of low grade inflammation (LGI) and determine the potential drivers and the effects of the "inflamed" phenotype observed in the elderly. We discuss the role of gut microbiota and immune system crosstalk and the gut-brain axis. Then, we focus on major health complications associated with LGI in the elderly, including mental health and wellbeing, metabolic abnormalities and infections. Finally, we discuss the possibility of manipulating LGI in the elderly by nutritional interventions. We provide an overview of the evidence that exists in the elderly for omega-3 fatty acid, probiotic, prebiotic, antioxidant and polyphenol interventions as a means to influence LGI. We conclude that slowing, controlling or reversing LGI is likely to be an important way to prevent, or reduce the severity of, age-related functional decline and the onset of conditions affecting health and well-being; that there is evidence to support specific dietary interventions as a strategy to control LGI; and that a continued research focus on this field is warranted.
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Affiliation(s)
- Philip C Calder
- Faculty of Medicine, University of Southampton, Southampton, United Kingdom; NIHR Southampton Biomedical Research Centre, University Hospital NHS Foundation Trust and University of Southampton, Southampton, United Kingdom
| | - Nabil Bosco
- Nestlé Research Center Asia, 21 Biopolis Road, 138567, Singapore
| | | | - Lucile Capuron
- INRA, Nutrition and Integrative Neurobiology, 33076 Bordeaux, France; Nutrition and Integrative Neurobiology (NutriNeuro), UMR 1286, University of Bordeaux, 33076 Bordeaux, France
| | - Nathalie Delzenne
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Catholic University of Louvain, B-1200 Brussels, Belgium
| | - Joel Doré
- MetaGénoPolis, INRA, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| | - Claudio Franceschi
- IRCCS, Institute of Neurological Sciences of Bologna, Bologna 40124, Italy
| | - Markus J Lehtinen
- DuPont Nutrition and Health, Global Health and Nutrition Science, 02460 Kantvik, Finland
| | - Tobias Recker
- International Life Sciences Institute European Branch, 1200 Brussels, Belgium.
| | - Stefano Salvioli
- Department of Experimental, Diagnostic, and Specialty Medicine, University of Bologna, 40126 Bologna, Italy
| | - Francesco Visioli
- Department of Molecular Medicine, University of Padova, 35121 Padova, Italy; IMDEA-Food, 28049 Madrid, Spain
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Marcon F, Siniscalchi E, Andreoli C, Allione A, Fiorito G, Medda E, Guarrera S, Matullo G, Crebelli R. Telomerase activity, telomere length and hTERT DNA methylation in peripheral blood mononuclear cells from monozygotic twins with discordant smoking habits. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2017; 58:551-559. [PMID: 28843010 DOI: 10.1002/em.22127] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 05/22/2017] [Accepted: 05/22/2017] [Indexed: 06/07/2023]
Abstract
Increased telomerase expression has been implicated in the pathogenesis of lung cancer and, since the primary cause of lung cancer is smoking, an association between telomerase reactivation and tobacco smoke has been proposed. In this work an investigation has been performed to assess the relationship between tobacco smoke exposure and telomerase activity (TA) in peripheral blood mononuclear cells of healthy smokers. The methylation status of the catalytic subunit of telomerase hTERT was concurrently investigated to assess the possible association between epigenetic modifications of hTERT and TA. Besides, the association between smoke and telomere length (TL) has been evaluated. Healthy monozygotic twins with discordant smoking habits were selected as study population to minimize inter-individual differences because of demographic characteristics and genetic heterogeneity. Statistically significant higher values of TA and TL were observed in smokers compared to nonsmoker co-twins. The multivariate analysis of data showed, besides smoking habits (P = 0.02), an influence of gender (P = 0.006) and BMI (P = 0.001) on TA and a borderline effect of gender (P = 0.05) on TL. DNA methylation analysis, focused on 100 CpG sites mapping in hTERT, highlighted nine CpG sites differentially methylated in smokers. When co-twins were contrasted, selecting as variables the intra-twin difference in TA and hTERT DNA methylation, a statistically significant inverse correlation (P = 0.003) was observed between TA and DNA methylation at the cg05521538 site. In conclusion, these results indicate an association of tobacco smoke with TA and TL and suggest a possible association between smoke-induced epigenetic effects and TA in healthy smokers. Environ. Mol. Mutagen. 58:551-559, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Francesca Marcon
- Department of Environment and Primary Prevention, Surveillance and Health Promotion, Istituto Superiore di Sanità, V.le Regina Elena 299, Rome, 00161, Italy
| | - Ester Siniscalchi
- Department of Environment and Primary Prevention, Surveillance and Health Promotion, Istituto Superiore di Sanità, V.le Regina Elena 299, Rome, 00161, Italy
| | - Cristina Andreoli
- Department of Environment and Primary Prevention, Surveillance and Health Promotion, Istituto Superiore di Sanità, V.le Regina Elena 299, Rome, 00161, Italy
| | - Alessandra Allione
- Italian Institute for Genomic Medicine (IIGM, FKA HuGeF), Via Nizza 52, 10126 Torino and Dept. Medical Sciences, University of Turin, Via Santena 19, Turin, 10126, Italy
| | - Giovanni Fiorito
- Italian Institute for Genomic Medicine (IIGM, FKA HuGeF), Via Nizza 52, 10126 Torino and Dept. Medical Sciences, University of Turin, Via Santena 19, Turin, 10126, Italy
| | - Emanuela Medda
- National Centre for Epidemiology, Surveillance and Health Promotion, Istituto Superiore di Sanità, V.le Regina Elena 299, Rome, 00161, Italy
| | - Simonetta Guarrera
- Italian Institute for Genomic Medicine (IIGM, FKA HuGeF), Via Nizza 52, 10126 Torino and Dept. Medical Sciences, University of Turin, Via Santena 19, Turin, 10126, Italy
| | - Giuseppe Matullo
- Italian Institute for Genomic Medicine (IIGM, FKA HuGeF), Via Nizza 52, 10126 Torino and Dept. Medical Sciences, University of Turin, Via Santena 19, Turin, 10126, Italy
| | - Riccardo Crebelli
- Department of Environment and Primary Prevention, Surveillance and Health Promotion, Istituto Superiore di Sanità, V.le Regina Elena 299, Rome, 00161, Italy
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Choi YJ, Kim N, Lee JY, Nam RH, Suh JH, Lee SM, Ham MH, Jo HJ, Shim YK, Park YH, Lee JC, Choi YJ, Lee HS, Lee DH. PMK-S005 Alleviates Age-Related Gastric Acid Secretion, Inflammation, and Oxidative Status in the Rat Stomach. Gut Liver 2017; 10:749-56. [PMID: 27172930 PMCID: PMC5003198 DOI: 10.5009/gnl15584] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 12/05/2015] [Indexed: 12/12/2022] Open
Abstract
Background/Aims The aim of this study was to evaluate the effect of the synthetic S-allyl-l-cysteine (SAC) PMK-S005 on gastric acid secretion, inflammation, and antioxidant enzymes in aging rats. Methods The rats were divided into four groups at 31 weeks of age and were continuously fed a diet containing a vehicle control, PMK-S005 (5 or 10 mg/kg), or lansoprazole (5 mg/kg). Gastric acid secretion and connective tissue thickness of the lamina propria were evaluated at 74 weeks and 2 years of age. Tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and COX-2 levels were measured by using enzyme-linked immunosorbent assays (ELISAs) or Western blot assays. Levels of antioxidant enzymes, including heme oxyganase 1 (HO-1) and NAD(P)H:quinone oxidoreductase 1 (NQO-1), were also measured. Results As the rats aged, gastric acid secretion significantly decreased, and the connective tissue of the lamina propria increased. However, 74-week-old rats in the PMK-S005 group exhibited greater levels of gastric acid secretion than those of the control and lansoprazole groups. The increase of TNF-α, IL-1β, and COX-2 expression in 74-week and 2-year-old control rats were inhibited by PMK-S005. In addition, the decrease in HO-1 and NQO-1 protein expression that occurred with aging was inhibited by PMK-S005 in the 74-week-old rats. Conclusions These results suggest that PMK-S005 has therapeutic potential as an antiaging agent to ameliorate age-related gastric acid secretion, inflammation, and oxidative stress in the stomach.
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Affiliation(s)
- Yoon Jeong Choi
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Nayoung Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.,Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Ju Yup Lee
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Ryoung Hee Nam
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Ji Hyung Suh
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Sun Min Lee
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Min Hee Ham
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Hyun Jin Jo
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Young Kwang Shim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Yo Han Park
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Jong-Chan Lee
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Yoon Jin Choi
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Hye Seung Lee
- Department of Pathology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Dong Ho Lee
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.,Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
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Kido LA, Montico F, Vendramini-Costa DB, Pilli RA, Cagnon VHA. Goniothalamin and Celecoxib Effects During Aging: Targeting Pro-Inflammatory Mediators in Chemoprevention of Prostatic Disorders. Prostate 2017; 77:838-848. [PMID: 28191652 DOI: 10.1002/pros.23324] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 01/25/2017] [Indexed: 12/26/2022]
Abstract
BACKGROUND Prostate is highly affected by aging, which lead to inflammatory disorders that can predispose to cancer development. Chemoprevention has emerged as a new therapeutic approach, intensifying studies evaluating the biological properties of new compounds. The aim of this study was to characterize the inflammatory responses in the prostate ventral lobe from senile mice treated with Goniothalamin (GTN), a promising natural compound with anti-inflammatory and antiproliferative properties. Its activity was compared to Celecoxib, an established nonsteroidal anti-inflammatory drug (NSAID). METHODS The animals were divided into: Control groups; Young (18-week-old FVB), Senile (52-week-old FVB). Treated groups: Senile-Goniothalamin (150 mg/kg orally), Senile-Celecoxib (10 mg/kg orally). The ventral lobe was collected after 4 weeks for light microscopy, immunohistochemistry, ELISA, and Western blotting analysis. RESULTS Both treatments were efficient in controlling the inflammatory process in the prostate from senile mice, maintaining the glandular morphology integrity. GTN reduced all inflammatory mediators evaluated (TNF-α, COX-2, iNOS) and different from Celecoxib, it also decreased the protein levels of NF-kB and p-NF-kB. CONCLUSIONS Finally, GTN and Celecoxib controlled inflammation in the prostate, and sensitized the senescent microenvironment to anti-inflammatory stimuli. Thus, both treatments are indicated as potential drugs in the prostatic diseases prevention during senescence. Prostate 77:838-848, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Larissa Akemi Kido
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Fabio Montico
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | | | - Ronaldo Aloise Pilli
- Department of Organic Chemistry, Institute of Chemistry, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Valeria Helena Alves Cagnon
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
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Li C, Bo L, Li P, Lu X, Li W, Pan L, Sun Y, Mu D, Liu W, Jin F. Losartan, a selective antagonist of AT1 receptor, attenuates seawater inhalation induced lung injury via modulating JAK2/STATs and apoptosis in rat. Pulm Pharmacol Ther 2017; 45:69-79. [PMID: 28483563 DOI: 10.1016/j.pupt.2017.05.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 03/29/2017] [Accepted: 05/04/2017] [Indexed: 12/21/2022]
Abstract
Losartan is a selective antagonist of AngⅠ type (AT1) receptor of Angiotensin Ⅱ (Ang Ⅱ), which is widely used as a clinical medicine for the hypertension. Recent studies have shown that losartan was shown to protect from acute lung injury (ALI). However, the underlying mechanism remains unclear. The aim of this research was to clarify whether Ang Ⅱ participated in the inflammatory response of ALI induced by seawater inhalation, and whether losartan had the protective effects on ALI by blocking the combination of Ang Ⅱ and AT1 receptor. In the current study, the severity of lung injury and the inflammatory reactions during seawater drowning induced ALI were assessed. Besides, we also detected the activation of relative pathways such as NF-κB, JAK2/STATs and apoptosis. The results showed that seawater inhalation could up-regulate the expression of Ang Ⅱ and AT1. While pretreatment of losartan (especially 15 mg/kg and 30 mg/kg) alleviated lung injury by inhibiting Ang-Ⅱ and AT1 receptor combination and in turn decreased the expression of p-NF-κB and activation of JAK2/STATs pathway. We also confirmed that losartan could reduce the apoptotic ratio of cells in the lung by modulating the phosphorylation of JNK and leak of cytochrome C to cytosol. Taken together, these findings demonstrate that losartan might have a therapeutic potential as an anti-inflammatory agent for treating SWI-ALI.
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Affiliation(s)
- Congcong Li
- Department of Respiration, Tangdu Hospital, Fourth Military Medical University, 710038, PR China
| | - Liyan Bo
- Department of Respiration, Tangdu Hospital, Fourth Military Medical University, 710038, PR China
| | - Pengcheng Li
- Department of Respiration, Tangdu Hospital, Fourth Military Medical University, 710038, PR China
| | - Xi Lu
- Department of Respiration, Tangdu Hospital, Fourth Military Medical University, 710038, PR China
| | - Wangping Li
- Department of Respiration, Tangdu Hospital, Fourth Military Medical University, 710038, PR China
| | - Lei Pan
- Department of Respiration, Tangdu Hospital, Fourth Military Medical University, 710038, PR China
| | - Yani Sun
- Department of Respiration, Tangdu Hospital, Fourth Military Medical University, 710038, PR China
| | - Deguang Mu
- Department of Respiration, Tangdu Hospital, Fourth Military Medical University, 710038, PR China
| | - Wei Liu
- Department of Respiration, Tangdu Hospital, Fourth Military Medical University, 710038, PR China.
| | - Faguang Jin
- Department of Respiration, Tangdu Hospital, Fourth Military Medical University, 710038, PR China.
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