13 results on '"Calvo-Rubio M"'
Search Results
2. A mild increase in nutrient signaling to mTORC1 in mice leads to parenchymal damage, myeloid inflammation and shortened lifespan.
- Author
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Ortega-Molina A, Lebrero-Fernández C, Sanz A, Calvo-Rubio M, Deleyto-Seldas N, de Prado-Rivas L, Plata-Gómez AB, Fernández-Florido E, González-García P, Vivas-García Y, Sánchez García E, Graña-Castro O, Price NL, Aroca-Crevillén A, Caleiras E, Monleón D, Borrás C, Casanova-Acebes M, de Cabo R, and Efeyan A
- Subjects
- Animals, Mice, Nutrients metabolism, TOR Serine-Threonine Kinases metabolism, Mechanistic Target of Rapamycin Complex 1 metabolism, Longevity, Signal Transduction, Inflammation pathology, Inflammation metabolism, Myeloid Cells metabolism, Myeloid Cells pathology
- Abstract
The mechanistic target of rapamycin complex 1 controls cellular anabolism in response to growth factor signaling and to nutrient sufficiency signaled through the Rag GTPases. Inhibition of mTOR reproducibly extends longevity across eukaryotes. Here we report that mice that endogenously express active mutant variants of RagC exhibit multiple features of parenchymal damage that include senescence, expression of inflammatory molecules, increased myeloid inflammation with extensive features of inflammaging and a ~30% reduction in lifespan. Through bone marrow transplantation experiments, we show that myeloid cells are abnormally activated by signals emanating from dysfunctional RagC-mutant parenchyma, causing neutrophil extravasation that inflicts additional inflammatory damage. Therapeutic suppression of myeloid inflammation in aged RagC-mutant mice attenuates parenchymal damage and extends survival. Together, our findings link mildly increased nutrient signaling to limited lifespan in mammals, and support a two-component process of parenchymal damage and myeloid inflammation that together precipitate a time-dependent organ deterioration that limits longevity., (© 2024. The Author(s).)
- Published
- 2024
- Full Text
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3. Sex-specific metabolic adaptations in transgenic mice overexpressing cytochrome b 5 reductase-3.
- Author
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Sánchez-Mendoza LM, Pérez-Sánchez C, Rodríguez-López S, López-Pedrera C, Calvo-Rubio M, de Cabo R, Burón MI, González-Reyes JA, and Villalba JM
- Subjects
- Animals, Female, Male, Mice, Carrier Proteins metabolism, Energy Metabolism genetics, Mice, Transgenic, Muscle, Skeletal metabolism, Sex Factors, Cytochrome-B(5) Reductase chemistry, Cytochrome-B(5) Reductase metabolism, Mitochondria genetics, Mitochondria metabolism
- Abstract
Cytochrome b
5 reductase 3 (CYB5R3) activates respiratory metabolism in cellular systems and exerts a prolongevity action in transgenic mice overexpressing this enzyme, mimicking some of the beneficial effects of calorie restriction. The aim of our study was to investigate the role of sex on metabolic adaptations elicited by CYB5R3 overexpression, and how key markers related with mitochondrial function are modulated in skeletal muscle, one of the major contributors to resting energy expenditure. Young CYB5R3 transgenic mice did not exhibit the striking adaptations in carbon metabolism previously detected in older animals. CYB5R3 was efficiently overexpressed and targeted to mitochondria in skeletal muscle from transgenic mice regardless sex. Overexpression significantly elevated NADH in both sexes, although differences were not statistically significant for NAD+ , and increased the abundance of cytochrome c and the fission protein DRP-1 in females but not in males. Moreover, while mitochondrial biogenesis and function markers (as TFAM, NRF-1 and cleaved SIRT3) were markedly upregulated by CYB5R3 overexpression in females, a downregulation was observed in males. Ultrastructural changes were also highlighted, with an increase in the number of mitochondria per surface unit, and in the size of intermyofibrillar mitochondria in transgenic females compared with their wild-type controls. Our results support that CYB5R3 overexpression upregulates markers consistent with enhanced mitochondrial biogenesis and function, and increases mitochondrial abundance in skeletal muscle, producing most of these potentially beneficial actions in females., Competing Interests: Declaration of competing interest Luz Marina Sánchez-Mendoza, Carlos Pérez-Sánchez, Sandra Rodríguez-López, Chary López-Pedrera, Miguel Calvo-Rubio, Rafael de Cabo, María I. Burón, José A. González-Reyes, and José M. Villalba declare that they have no competing interests., (Copyright © 2023 The Authors. Published by Elsevier Inc. All rights reserved.)- Published
- 2023
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4. The YAP-TEAD complex promotes senescent cell survival by lowering endoplasmic reticulum stress.
- Author
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Anerillas C, Mazan-Mamczarz K, Herman AB, Munk R, Lam KG, Calvo-Rubio M, Garrido A, Tsitsipatis D, Martindale JL, Altés G, Rossi M, Piao Y, Fan J, Cui CY, De S, Abdelmohsen K, de Cabo R, and Gorospe M
- Subjects
- Animals, Mice, Cell Survival, Signal Transduction, TOR Serine-Threonine Kinases, YAP-Signaling Proteins metabolism, TEA Domain Transcription Factors, Endoplasmic Reticulum Stress genetics, Aging genetics, Cellular Senescence genetics
- Abstract
Sublethal cell damage can trigger senescence, a complex adaptive program characterized by growth arrest, resistance to apoptosis and a senescence-associated secretory phenotype (SASP). Here, a whole-genome CRISPR knockout screen revealed that proteins in the YAP-TEAD pathway influenced senescent cell viability. Accordingly, treating senescent cells with a drug that inhibited this pathway, verteporfin (VPF), selectively triggered apoptotic cell death largely by derepressing DDIT4, which in turn inhibited mTOR. Reducing mTOR function in senescent cells diminished endoplasmic reticulum (ER) biogenesis, triggering ER stress and apoptosis due to high demands on ER function by the SASP. Importantly, VPF treatment decreased the numbers of senescent cells in the organs of old mice and mice exhibiting doxorubicin-induced senescence. Moreover, VPF treatment reduced immune cell infiltration and pro-fibrotic transforming growth factor-β signaling in aging mouse lungs, improving tissue homeostasis. We present an alternative senolytic strategy that eliminates senescent cells by hindering ER activity required for SASP production., (© 2023. This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply.)
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- 2023
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5. Age-dependent impact of two exercise training regimens on genomic and metabolic remodeling in skeletal muscle and liver of male mice.
- Author
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Bernier M, Enamorado IN, Gómez-Cabrera MC, Calvo-Rubio M, González-Reyes JA, Price NL, Cortés-Rodríguez AB, Rodríguez-Aguilera JC, Rodríguez-López S, Mitchell SJ, Murt KN, Kalafut K, Williams KM, Ward CW, Stains JP, Brea-Calvo G, Villalba JM, Cortassa S, Aon MA, and de Cabo R
- Abstract
Skeletal muscle adapts to different exercise training modalities with age; however, the impact of both variables at the systemic and tissue levels is not fully understood. Here, adult and old C57BL/6 male mice were assigned to one of three groups: sedentary, daily high-intensity intermittent training (HIIT), or moderate intensity continuous training (MICT) for 4 weeks, compatible with the older group's exercise capacity. Improvements in body composition, fasting blood glucose, and muscle strength were mostly observed in the MICT old group, while effects of HIIT training in adult and old animals was less clear. Skeletal muscle exhibited structural and functional adaptations to exercise training, as revealed by electron microscopy, OXPHOS assays, respirometry, and muscle protein biomarkers. Transcriptomics analysis of gastrocnemius muscle combined with liver and serum metabolomics unveiled an age-dependent metabolic remodeling in response to exercise training. These results support a tailored exercise prescription approach aimed at improving health and ameliorating age-associated loss of muscle strength and function in the elderly., (© 2022. This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply.)
- Published
- 2022
- Full Text
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6. Mitochondrial health is enhanced in rats with higher vs. lower intrinsic exercise capacity and extended lifespan.
- Author
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Aon MA, Cortassa S, Juhaszova M, González-Reyes JA, Calvo-Rubio M, Villalba JM, Lachance AD, Ziman BD, Mitchell SJ, Murt KN, Axsom JEC, Alfaras I, Britton SL, Koch LG, de Cabo R, Lakatta EG, and Sollott SJ
- Abstract
The intrinsic aerobic capacity of an organism is thought to play a role in aging and longevity. Maximal respiratory rate capacity, a metabolic performance measure, is one of the best predictors of cardiovascular- and all-cause mortality. Rats selectively bred for high-(HCR) vs. low-(LCR) intrinsic running-endurance capacity have up to 31% longer lifespan. We found that positive changes in indices of mitochondrial health in cardiomyocytes (respiratory reserve, maximal respiratory capacity, resistance to mitochondrial permeability transition, autophagy/mitophagy, and higher lipids-over-glucose utilization) are uniformly associated with the extended longevity in HCR vs. LCR female rats. Cross-sectional heart metabolomics revealed pathways from lipid metabolism in the heart, which were significantly enriched by a select group of strain-dependent metabolites, consistent with enhanced lipids utilization by HCR cardiomyocytes. Heart-liver-serum metabolomics further revealed shunting of lipidic substrates between the liver and heart via serum during aging. Thus, mitochondrial health in cardiomyocytes is associated with extended longevity in rats with higher intrinsic exercise capacity and, probably, these findings can be translated to other populations as predictors of outcomes of health and survival.
- Published
- 2021
- Full Text
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7. Overexpression of CYB5R3 and NQO1, two NAD + -producing enzymes, mimics aspects of caloric restriction.
- Author
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Diaz-Ruiz A, Lanasa M, Garcia J, Mora H, Fan F, Martin-Montalvo A, Di Francesco A, Calvo-Rubio M, Salvador-Pascual A, Aon MA, Fishbein KW, Pearson KJ, Villalba JM, Navas P, Bernier M, and de Cabo R
- Subjects
- Animals, Cytochrome-B(5) Reductase metabolism, Energy Metabolism, Longevity, Male, Mice, Mice, Transgenic, NAD(P)H Dehydrogenase (Quinone) metabolism, Rats, Caloric Restriction, Cytochrome-B(5) Reductase genetics, Gene Expression Regulation, Enzymologic, NAD(P)H Dehydrogenase (Quinone) genetics
- Abstract
Calorie restriction (CR) is one of the most robust means to improve health and survival in model organisms. CR imposes a metabolic program that leads to increased stress resistance and delayed onset of chronic diseases, including cancer. In rodents, CR induces the upregulation of two NADH-dehydrogenases, namely NAD(P)H:quinone oxidoreductase 1 (Nqo1) and cytochrome b
5 reductase 3 (Cyb5r3), which provide electrons for energy metabolism. It has been proposed that this upregulation may be responsible for some of the beneficial effects of CR, and defects in their activity are linked to aging and several age-associated diseases. However, it is unclear whether changes in metabolic homeostasis solely through upregulation of these NADH-dehydrogenases have a positive impact on health and survival. We generated a mouse that overexpresses both metabolic enzymes leading to phenotypes that resemble aspects of CR including a modest increase in lifespan, greater physical performance, a decrease in chronic inflammation, and, importantly, protection against carcinogenesis, one of the main hallmarks of CR. Furthermore, these animals showed an enhancement of metabolic flexibility and a significant upregulation of the NAD+ /sirtuin pathway. The results highlight the importance of these NAD+ producers for the promotion of health and extended lifespan., (© 2018 The Authors. Aging Cell published by the Anatomical Society and John Wiley & Sons Ltd.)- Published
- 2018
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8. Soluble epoxide hydrolase in podocytes is a significant contributor to renal function under hyperglycemia.
- Author
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Bettaieb A, Koike S, Hsu MF, Ito Y, Chahed S, Bachaalany S, Gruzdev A, Calvo-Rubio M, Lee KSS, Inceoglu B, Imig JD, Villalba JM, Zeldin DC, Hammock BD, and Haj FG
- Subjects
- Animals, Apoptosis genetics, Autophagy genetics, Diabetes Mellitus, Experimental enzymology, Diabetes Mellitus, Experimental pathology, Diabetic Nephropathies enzymology, Diabetic Nephropathies pathology, Endoplasmic Reticulum Stress genetics, Enzyme Inhibitors administration & dosage, Epoxide Hydrolases antagonists & inhibitors, Humans, Hyperglycemia enzymology, Hyperglycemia pathology, Kidney enzymology, Kidney pathology, Mice, Podocytes enzymology, Diabetes Mellitus, Experimental genetics, Diabetic Nephropathies genetics, Epoxide Hydrolases genetics, Hyperglycemia genetics
- Abstract
Background: Diabetic nephropathy (DN) is the leading cause of renal failure, and podocyte dysfunction contributes to the pathogenesis of DN. Soluble epoxide hydrolase (sEH, encoded by Ephx2) is a conserved cytosolic enzyme whose inhibition has beneficial effects on renal function. The aim of this study is to investigate the contribution of sEH in podocytes to hyperglycemia-induced renal injury., Materials and Methods: Mice with podocyte-specific sEH disruption (pod-sEHKO) were generated, and alterations in kidney function were determined under normoglycemia, and high-fat diet (HFD)- and streptozotocin (STZ)-induced hyperglycemia., Results: sEH protein expression increased in murine kidneys under HFD- and STZ-induced hyperglycemia. sEH deficiency in podocytes preserved renal function and glucose control and mitigated hyperglycemia-induced renal injury. Also, podocyte sEH deficiency was associated with attenuated hyperglycemia-induced renal endoplasmic reticulum (ER) stress, inflammation and fibrosis, and enhanced autophagy. Moreover, these effects were recapitulated in immortalized murine podocytes treated with a selective sEH pharmacological inhibitor. Furthermore, pharmacological-induced elevation of ER stress or attenuation of autophagy in immortalized podocytes mitigated the protective effects of sEH inhibition., Conclusions: These findings establish sEH in podocytes as a significant contributor to renal function under hyperglycemia., General Significance: These data suggest that sEH is a potential therapeutic target for podocytopathies., (Copyright © 2017 Elsevier B.V. All rights reserved.)
- Published
- 2017
- Full Text
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9. Protein tyrosine phosphatase 1B deficiency in podocytes mitigates hyperglycemia-induced renal injury.
- Author
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Ito Y, Hsu MF, Bettaieb A, Koike S, Mello A, Calvo-Rubio M, Villalba JM, and Haj FG
- Subjects
- Animals, Diabetes Mellitus, Experimental genetics, Diabetes Mellitus, Experimental pathology, Diabetic Nephropathies genetics, Diabetic Nephropathies pathology, Diet, High-Fat, Hyperglycemia genetics, Hyperglycemia pathology, Kidney metabolism, Kidney pathology, Mice, Mice, Knockout, Podocytes pathology, Protein Tyrosine Phosphatase, Non-Receptor Type 1 genetics, Signal Transduction physiology, Diabetes Mellitus, Experimental metabolism, Diabetic Nephropathies metabolism, Hyperglycemia metabolism, Podocytes metabolism, Protein Tyrosine Phosphatase, Non-Receptor Type 1 metabolism
- Abstract
Objective: Diabetic nephropathy is one of the most devastating complications of diabetes, and growing evidence implicates podocyte dysfunction in disease pathogenesis. The objective of this study was to investigate the contribution of protein tyrosine phosphatase 1B (PTP1B) in podocytes to hyperglycemia-induced renal injury., Methods: To determine the in vivo function of PTP1B in podocytes we generated mice with podocyte-specific PTP1B disruption (hereafter termed pod-PTP1B KO). Kidney functions were determined in control and pod-PTP1B KO mice under normoglycemia and high-fat diet (HFD)- and streptozotocin (STZ)-induced hyperglycemia., Results: PTP1B expression increased in murine kidneys following HFD and STZ challenges. Under normoglycemia control and pod-PTP1B KO mice exhibited comparable renal functions. However, podocyte PTP1B disruption attenuated hyperglycemia-induced albuminuria and renal injury and preserved glucose control. Also, podocyte PTP1B disruption was accompanied with improved renal insulin signaling and enhanced autophagy with decreased inflammation and fibrosis. Moreover, the beneficial effects of podocyte PTP1B disruption in vivo were recapitulated in E11 murine podocytes with lentiviral-mediated PTP1B knockdown. Reconstitution of PTP1B in knockdown podocytes reversed the enhanced insulin signaling and autophagy suggesting that they were likely a consequence of PTP1B deficiency. Further, pharmacological attenuation of autophagy in PTP1B knockdown podocytes mitigated the protective effects of PTP1B deficiency., Conclusions: These findings demonstrate that podocyte PTP1B deficiency attenuates hyperglycemia-induced renal damage and suggest that PTP1B may present a therapeutic target in renal injury., (Copyright © 2017 Elsevier Inc. All rights reserved.)
- Published
- 2017
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10. Effects of Sex, Strain, and Energy Intake on Hallmarks of Aging in Mice.
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Mitchell SJ, Madrigal-Matute J, Scheibye-Knudsen M, Fang E, Aon M, González-Reyes JA, Cortassa S, Kaushik S, Gonzalez-Freire M, Patel B, Wahl D, Ali A, Calvo-Rubio M, Burón MI, Guiterrez V, Ward TM, Palacios HH, Cai H, Frederick DW, Hine C, Broeskamp F, Habering L, Dawson J, Beasley TM, Wan J, Ikeno Y, Hubbard G, Becker KG, Zhang Y, Bohr VA, Longo DL, Navas P, Ferrucci L, Sinclair DA, Cohen P, Egan JM, Mitchell JR, Baur JA, Allison DB, Anson RM, Villalba JM, Madeo F, Cuervo AM, Pearson KJ, Ingram DK, Bernier M, and de Cabo R
- Subjects
- Aging genetics, Animals, Autophagy genetics, Biomarkers metabolism, Caloric Restriction, Cluster Analysis, Female, Gene Expression Profiling, Gene Expression Regulation, Glucose metabolism, Homeostasis genetics, Hydrogen Sulfide metabolism, Islets of Langerhans anatomy & histology, Liver metabolism, Liver ultrastructure, Longevity genetics, Longevity physiology, Male, Metabolome, Metabolomics, Mice, Mice, Inbred Strains, Mitochondria metabolism, Phenotype, Proteasome Endopeptidase Complex metabolism, Ubiquitin metabolism, Aging metabolism, Energy Intake genetics, Sex Characteristics
- Abstract
Calorie restriction (CR) is the most robust non-genetic intervention to delay aging. However, there are a number of emerging experimental variables that alter CR responses. We investigated the role of sex, strain, and level of CR on health and survival in mice. CR did not always correlate with lifespan extension, although it consistently improved health across strains and sexes. Transcriptional and metabolomics changes driven by CR in liver indicated anaplerotic filling of the Krebs cycle together with fatty acid fueling of mitochondria. CR prevented age-associated decline in the liver proteostasis network while increasing mitochondrial number, preserving mitochondrial ultrastructure and function with age. Abrogation of mitochondrial function negated life-prolonging effects of CR in yeast and worms. Our data illustrate the complexity of CR in the context of aging, with a clear separation of outcomes related to health and survival, highlighting complexities of translation of CR into human interventions., (Published by Elsevier Inc.)
- Published
- 2016
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11. Dietary fat composition influences glomerular and proximal convoluted tubule cell structure and autophagic processes in kidneys from calorie-restricted mice.
- Author
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Calvo-Rubio M, Burón MI, López-Lluch G, Navas P, de Cabo R, Ramsey JJ, Villalba JM, and González-Reyes JA
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- Animals, Biomarkers metabolism, Blotting, Western, Body Weight drug effects, Creatinine blood, Cyclin-Dependent Kinase Inhibitor p16 metabolism, Epithelial Cells drug effects, Epithelial Cells metabolism, Epithelial Cells ultrastructure, Glomerular Filtration Rate drug effects, Kidney Glomerulus drug effects, Kidney Tubules, Proximal drug effects, Kidney Tubules, Proximal metabolism, Male, Mice, Inbred C57BL, Mitochondria drug effects, Mitochondria metabolism, Mitochondria ultrastructure, Urea blood, Autophagy drug effects, Caloric Restriction, Dietary Fats pharmacology, Kidney Glomerulus cytology, Kidney Glomerulus ultrastructure, Kidney Tubules, Proximal cytology, Kidney Tubules, Proximal ultrastructure
- Abstract
Calorie restriction (CR) has been repeatedly shown to prevent cancer, diabetes, hypertension, and other age-related diseases in a wide range of animals, including non-human primates and humans. In rodents, CR also increases lifespan and is a powerful tool for studying the aging process. Recently, it has been reported in mice that dietary fat plays an important role in determining lifespan extension with 40% CR. In these conditions, animals fed lard as dietary fat showed an increased longevity compared with mice fed soybean or fish oils. In this paper, we study the effect of these dietary fats on structural and physiological parameters of kidney from mice maintained on 40% CR for 6 and 18 months. Analyses were performed using quantitative electron microcopy techniques and protein expression in Western blots. CR mitigated most of the analyzed age-related parameters in kidney, such as glomerular basement membrane thickness, mitochondrial mass in convoluted proximal tubules and autophagic markers in renal homogenates. The lard group showed improved preservation of several renal structures with aging when compared to the other CR diet groups. These results indicate that dietary fat modulates renal structure and function in CR mice and plays an essential role in the determination of health span in rodents., (© 2016 The Authors. Aging Cell published by the Anatomical Society and John Wiley & Sons Ltd.)
- Published
- 2016
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12. The influence of dietary fat source on liver and skeletal muscle mitochondrial modifications and lifespan changes in calorie-restricted mice.
- Author
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Villalba JM, López-Domínguez JA, Chen Y, Khraiwesh H, González-Reyes JA, Del Río LF, Gutiérrez-Casado E, Del Río M, Calvo-Rubio M, Ariza J, de Cabo R, López-Lluch G, Navas P, Hagopian K, Burón MI, and Ramsey JJ
- Subjects
- Age Factors, Aging pathology, Apoptosis, Dietary Fats metabolism, Electron Transport Chain Complex Proteins metabolism, Fish Oils administration & dosage, Fish Oils metabolism, Lipid Peroxidation, Longevity, Membrane Potential, Mitochondrial, Mitochondria, Liver ultrastructure, Mitochondria, Muscle ultrastructure, Models, Biological, Muscle, Skeletal ultrastructure, Oxidative Stress, Reactive Oxygen Species metabolism, Soybean Oil administration & dosage, Soybean Oil metabolism, Time Factors, Aging metabolism, Caloric Restriction, Dietary Fats administration & dosage, Mitochondria, Liver metabolism, Mitochondria, Muscle metabolism, Muscle, Skeletal metabolism
- Abstract
The Membrane Theory of Aging proposes that lifespan is inversely related to the level of unsaturation in membrane phospholipids. Calorie restriction (CR) without malnutrition extends lifespan in many model organisms, which may be related to alterations in membrane phospholipids fatty acids. During the last few years our research focused on studying how altering the predominant fat source affects the outcome of CR in mice. We have established four dietary groups: one control group fed 95 % of a pre-determined ad libitum intake (in order to prevent obesity), and three CR groups fed 40 % less than ad libitum intake. Lipid source for the control and one of the CR groups was soybean oil (high in n-6 PUFA) whereas the two remaining CR groups were fed diets containing fish oil (high in n-3 PUFA), or lard (high in saturated and monounsaturated fatty acids). Dietary intervention periods ranged from 1 to 18 months. We performed a longitudinal lifespan study and a cross-sectional study set up to evaluate several mitochondrial parameters which included fatty acid composition, H(+) leak, activities of electron transport chain enzymes, ROS generation, lipid peroxidation, mitochondrial ultrastructure, and mitochondrial apoptotic signaling in liver and skeletal muscle. These approaches applied to different cohorts of mice have independently indicated that lard as a fat source often maximizes the effects of 40 % CR on mice. These effects could be due to significant increases of monounsaturated fatty acids levels, in accordance with the Membrane Theory of Aging.
- Published
- 2015
- Full Text
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13. [Amoxicillin versus bacampicillin in infectious exacerbations of chronic bronchitis].
- Author
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Montero FJ, Calvo-Rubio M, and Barco MC
- Subjects
- Amoxicillin therapeutic use, Ampicillin economics, Ampicillin therapeutic use, Chronic Disease, Humans, Respiratory Tract Infections etiology, Spain, Amoxicillin economics, Ampicillin analogs & derivatives, Bronchitis complications, Respiratory Tract Infections drug therapy
- Published
- 1989
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