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Martins AC, Pinheiro JDS, Szinwelski L, Cidade ER, Santin DF, Proença LD, Araújo BA, Saraiva-Pereira ML, Jardim LB. Caffeine Consumption and Interaction with ADORA2A, CYP1A2 and NOS1 Variants Do Not Influence Age at Onset of Machado-Joseph Disease. CEREBELLUM (LONDON, ENGLAND) 2024:10.1007/s12311-024-01717-7. [PMID: 38969840 DOI: 10.1007/s12311-024-01717-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/27/2024] [Indexed: 07/07/2024]
Abstract
BACKGROUND The age at onset (AO) of Machado-Joseph disease (SCA3/MJD), a disorder due to an expanded CAG repeat (CAGexp) in ATXN3, is quite variable and the role of environmental factors is still unknown. Caffeine was associated with protective effects against other neurodegenerative diseases, and against SCA3/MJD in transgenic mouse models. We aimed to evaluate whether caffeine consumption and its interaction with variants of caffeine signaling/metabolization genes impact the AO of this disease. METHODS a questionnaire on caffeine consumption was applied to adult patients and unrelated controls living in Rio Grande do Sul, Brazil. AO and CAGexp were previously determined. SNPs rs5751876 (ADORA2A), rs2298383 (ADORA2A), rs762551 (CYP1A2) and rs478597 (NOS1) were genotyped. AO of subgroups were compared, adjusting the CAGexp to 75 repeats (p < 0.05). RESULTS 171/179 cases and 98/100 controls consumed caffeine. Cases with high and low caffeine consumption (more or less than 314.5 mg of caffeine/day) had mean (SD) AO of 35.05 (11.44) and 35.43 (10.08) years (p = 0.40). The mean (SD) AO of the subgroups produced by the presence or absence of caffeine-enhancing alleles in ADORA2A (T allele at rs5751876 and rs2298383), CYP1A2 (C allele) and NOS1 (C allele) were all similar (p between 0.069 and 0.516). DISCUSSION Caffeine consumption was not related to changes in the AO of SCA3/MJD, either alone or in interaction with protective genotypes at ADORA2A, CYP1A2 and NOS1.
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Affiliation(s)
- Ana Carolina Martins
- Programa de Pós-Graduação em Genética e Biologia Molecular, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, 91501-970, Brazil
- Centros de Pesquisa Clínica e Experimental, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Porto Alegre, 90035-903, Brazil
| | - Jordânia Dos Santos Pinheiro
- Centros de Pesquisa Clínica e Experimental, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Porto Alegre, 90035-903, Brazil
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av. Ipiranga, 2752, Porto Alegre, 90610-000, Brazil
| | - Luciana Szinwelski
- Centros de Pesquisa Clínica e Experimental, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Porto Alegre, 90035-903, Brazil
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av. Ipiranga, 2752, Porto Alegre, 90610-000, Brazil
| | - Eduardo Rockenbach Cidade
- Centros de Pesquisa Clínica e Experimental, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Porto Alegre, 90035-903, Brazil
- Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2400, Porto Alegre, 90.035-002, Brazil
| | - Danilo Fernando Santin
- Centros de Pesquisa Clínica e Experimental, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Porto Alegre, 90035-903, Brazil
- Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2400, Porto Alegre, 90.035-002, Brazil
| | - Laura Damke Proença
- Centros de Pesquisa Clínica e Experimental, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Porto Alegre, 90035-903, Brazil
- Instituto de Biociências , Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 9500, Porto Alegre, 91501-970, Brazil
| | - Bruna Almeida Araújo
- Centros de Pesquisa Clínica e Experimental, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Porto Alegre, 90035-903, Brazil
- Curso de Biomedicina, Universidade Federal do Rio Grande do Sul, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2600, Porto Alegre, 90035-003, Brazil
| | - Maria Luiza Saraiva-Pereira
- Programa de Pós-Graduação em Genética e Biologia Molecular, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, 91501-970, Brazil
- Centros de Pesquisa Clínica e Experimental, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Porto Alegre, 90035-903, Brazil
- Serviço de Genética Médica, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Porto Alegre, 90035-903, Brazil
- Departamento de Bioquímica, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2600, Porto Alegre, 90035-003, Brazil
| | - Laura Bannach Jardim
- Programa de Pós-Graduação em Genética e Biologia Molecular, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, 91501-970, Brazil.
- Centros de Pesquisa Clínica e Experimental, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Porto Alegre, 90035-903, Brazil.
- Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2400, Porto Alegre, 90.035-002, Brazil.
- Serviço de Genética Médica, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Porto Alegre, 90035-903, Brazil.
- Departamento de Medicina Interna, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2400, Porto Alegre, 90.035-002, Brazil.
- DMI FAMED UFRGS, Medical Genetics Service, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Porto Alegre, 90035-003, Brazil.
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Villanueva-García D, Mota-Rojas D, Miranda-Cortés A, Ibarra-Ríos D, Casas-Alvarado A, Mora-Medina P, Martínez-Burnes J, Olmos-Hernández A, Hernández-Avalos I. Caffeine: cardiorespiratory effects and tissue protection in animal models. Exp Anim 2021; 70:431-439. [PMID: 34039788 PMCID: PMC8614017 DOI: 10.1538/expanim.20-0185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
OBJECTIVE The aim of this review is to analyze the cardiorespiratory and tissue-protective effects of caffeine in animal models. Peer-reviewed literature published between 1975 and 2021 was retrieved from CAB Abstracts, PubMed, ISI Web of Knowledge, and Scopus. Extracted data were analyzed to address the mechanism of action of caffeine on cardiorespiratory parameters (heart rate and rhythm), vasopressor effects, and some indices of respiratory function; we close this review by discussing the existing debate on the research carried out on the effects of caffeine on tissue protection. Adenosine acts through specific receptors and is a negative inotropic andchronotropic agent. Blockage of its cardiac receptors can cause tachycardia (with arrhythmogenic potential) due to the intense activity of β1 receptors. In terms of tissue protection, caffeine produces inhibition of hyperoxia-induced pulmonary inflammation by decreasing proinflammatory cytokine expression in animal models. CONCLUSION The protection that caffeine provides to tissues is not limited to the CNS, as studies have demonstrated that it generates attenuation of inflammatory effects in pulmonary tissue, where it inhibits the effects of some pro-inflammatory cytokines and prevents functional and structural changes.
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Affiliation(s)
- Dina Villanueva-García
- Division of Neonatology, National Institute of Health, Hospital Infantil de México Federico Gómez
| | - Daniel Mota-Rojas
- Neurophysiology, Behavior, and Animal Welfare Assessment, Department of Animal Production and Agriculture (DPAA), Universidad Autónoma Metropolitana (UAM) Xochimilco Campus
| | - Agatha Miranda-Cortés
- Clinical Pharmacology and Veterinary Anaesthesia, Department of Biological Science, FESC, Universidad Nacional Autónoma de México (UNAM)
| | - Daniel Ibarra-Ríos
- Division of Neonatology, National Institute of Health, Hospital Infantil de México Federico Gómez
| | - Alejandro Casas-Alvarado
- Neurophysiology, Behavior, and Animal Welfare Assessment, Department of Animal Production and Agriculture (DPAA), Universidad Autónoma Metropolitana (UAM) Xochimilco Campus
| | - Patricia Mora-Medina
- Livestock Science Department, Universidad Nacional Autónoma de México (UNAM), Facultad de Estudios Superiores Cuautitlán
| | - Julio Martínez-Burnes
- Graduate and Research Department, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Tamaulipas
| | - Adriana Olmos-Hernández
- Division of Biotechnology, Department Bioterio and Experimental Surgery, Instituto Nacional de Rehabilitación-Luis Guillermo Ibarra Ibarra (INR-LGII)
| | - Ismael Hernández-Avalos
- Clinical Pharmacology and Veterinary Anaesthesia, Department of Biological Science, FESC, Universidad Nacional Autónoma de México (UNAM)
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Beyer LA, Hixon ML. Review of animal studies on the cardiovascular effects of caffeine. Food Chem Toxicol 2018; 118:566-571. [PMID: 29864478 DOI: 10.1016/j.fct.2018.06.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 05/30/2018] [Accepted: 06/01/2018] [Indexed: 10/14/2022]
Abstract
To address the safety of caffeine levels in energy drinks, we previously conducted a detailed evaluation of epidemiology studies in humans consuming coffee/caffeine, in which we assessed multiple health effects (unpublished). To further evaluate the effects of caffeine on the cardiovascular system, we turned to animal studies, which often use pure caffeine (not coffee), frequently at higher doses than those typical of human exposure. We identified key scientific studies and reviews in which effects of coffee or caffeine were evaluated in animals by conducting a comprehensive PubMed literature search and analyzing the results. We found that the human equivalent dose (HED) for the no observed adverse effect level (NOAEL) for cardiovascular effects was 260 mg caffeine (2-3 cups of coffee) for a single dose of caffeine for a 70-kg adult, while the lowest observed adverse effect level (LOAEL) was 770 mg (7-8 cups of coffee) for a 70-kg adult. Overall, the doses associated with possible adverse cardiovascular effects were more than either the amount of caffeine consumed over a 24-hour period in two regular energy shots (400 mg/day) or the amount in two extra strength energy shots (460 mg/day).
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Affiliation(s)
| | - Mary L Hixon
- Gradient, 20 Univeristy Road, Cambridge, MA 02138, USA.
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Zulli A, Smith RM, Kubatka P, Novak J, Uehara Y, Loftus H, Qaradakhi T, Pohanka M, Kobyliak N, Zagatina A, Klimas J, Hayes A, La Rocca G, Soucek M, Kruzliak P. Caffeine and cardiovascular diseases: critical review of current research. Eur J Nutr 2016; 55:1331-43. [PMID: 26932503 DOI: 10.1007/s00394-016-1179-z] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Accepted: 02/06/2016] [Indexed: 12/21/2022]
Abstract
Caffeine is a most widely consumed physiological stimulant worldwide, which is consumed via natural sources, such as coffee and tea, and now marketed sources such as energy drinks and other dietary supplements. This wide use has led to concerns regarding the safety of caffeine and its proposed beneficial role in alertness, performance and energy expenditure and side effects in the cardiovascular system. The question remains "Which dose is safe?", as the population does not appear to adhere to the strict guidelines listed on caffeine consumption. Studies in humans and animal models yield controversial results, which can be explained by population, type and dose of caffeine and low statistical power. This review will focus on comprehensive and critical review of the current literature and provide an avenue for further study.
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Affiliation(s)
- Anthony Zulli
- Centre for Chronic Disease (CCD), College of Health and Biomedicine, Victoria University, Melbourne, VIC, Australia
| | - Renee M Smith
- Centre for Chronic Disease (CCD), College of Health and Biomedicine, Victoria University, Melbourne, VIC, Australia
| | - Peter Kubatka
- Department of Medical Biology, Jessenius Faculty of Medicine, Comenius University in Bratislava, Martin, Slovakia
| | - Jan Novak
- 2nd Department of Internal Medicine, St. Anne's University Hospital and Masaryk University, Brno, Czech Republic.,Department of Physiology, Masaryk University, Brno, Czech Republic
| | - Yoshio Uehara
- Division of Clinical Nutrition, Faculty of Home Economics, Kyoritsu Women's University, Tokyo, Japan
| | - Hayley Loftus
- Centre for Chronic Disease (CCD), College of Health and Biomedicine, Victoria University, Melbourne, VIC, Australia
| | - Tawar Qaradakhi
- Centre for Chronic Disease (CCD), College of Health and Biomedicine, Victoria University, Melbourne, VIC, Australia
| | - Miroslav Pohanka
- Faculty of Military Health Sciences, University of Defence, Hradec Kralove, Czech Republic
| | | | | | - Jan Klimas
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University, Odborarov 10, 832 32, Bratislava, Slovak Republic
| | - Alan Hayes
- Centre for Chronic Disease (CCD), College of Health and Biomedicine, Victoria University, Melbourne, VIC, Australia
| | - Giampiero La Rocca
- Human Anatomy Section, Department of Experimental Biomedicine and Clinical Neurosciences, University of Palermo, Palermo, Italy.,Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy
| | - Miroslav Soucek
- 2nd Department of Internal Medicine, St. Anne's University Hospital and Masaryk University, Brno, Czech Republic
| | - Peter Kruzliak
- Laboratory of Structural Biology and Proteomics, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Palackeho tr 1/1946, Brno, 612 42, Czech Republic.
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Disclosing caffeine action on insulin sensitivity: effects on rat skeletal muscle. Eur J Pharm Sci 2015; 70:107-16. [PMID: 25661425 DOI: 10.1016/j.ejps.2015.01.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 01/16/2015] [Accepted: 01/26/2015] [Indexed: 01/12/2023]
Abstract
Caffeine, a non-selective adenosine antagonist, has distinct effects on insulin sensitivity when applied acutely or chronically. Herein, we investigated the involvement of adenosine receptors on insulin resistance induced by single-dose caffeine administration. Additionally, the mechanism behind adenosine receptor-mediated caffeine effects in skeletal muscle was assessed. The effect of the administration of caffeine, 8-cycle-1,3-dipropylxanthine (DPCPX, A1 antagonist), 2-(2-Furanyl)-7-(2-phenylethyl)-7H-pyrazolo[4,3-e][1,2,4]triazolo[1,5-c]pyrimidin-5-amine (SCH58261, A2A antagonist) and 8-(4-{[(4-cyanophenyl)carbamoylmethyl]-oxy}phenyl)-1,3-di(n-propyl)xanthine (MRS1754, A2B antagonist) on whole-body insulin sensitivity was tested. Skeletal muscle Glut4,5'-AMP activated protein kinase (AMPK) and adenosine receptor protein expression were also assessed. The effect of A1 and A2B adenosine agonists on skeletal muscle glucose uptake was evaluated in vitro. Sodium nitroprussiate (SNP, 10nM), a nitric oxide (NO) donor, was used to evaluate the effect of NO on insulin resistance induced by adenosine antagonists. Acute caffeine decreased insulin sensitivity in a concentration dependent manner (Emax=55.54±5.37%, IC50=11.61nM), an effect that was mediated by A1 and A2B adenosine receptors. Additionally, acute caffeine administration significantly decreased Glut4, but not AMPK expression, in skeletal muscle. We found that A1, but not A2B agonists increased glucose uptake in skeletal muscle. SNP partially reversed DPCPX and MRS1754 induced-insulin resistance. Our results suggest that insulin resistance induced by acute caffeine administration is mediated by A1 and A2B adenosine receptors. Both Glut4 and NO seem to be downstream effectors involved in insulin resistance induced by acute caffeine.
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Nagarajan S, Namasivayam N. Silibinin alleviates hyperlipidaemia, restores mucin content, modulates TGF-β and fosters apoptosis in experimental rat colon carcinogenesis. J Funct Foods 2014. [DOI: 10.1016/j.jff.2014.10.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Chang JP, Sawisky GR, Davis PJ, Pemberton JG, Rieger AM, Barreda DR. Relationship between nitric oxide- and calcium-dependent signal transduction pathways in growth hormone release from dispersed goldfish pituitary cells. Gen Comp Endocrinol 2014; 206:118-29. [PMID: 25038498 DOI: 10.1016/j.ygcen.2014.07.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 07/05/2014] [Accepted: 07/08/2014] [Indexed: 11/17/2022]
Abstract
Nitric oxide (NO) and Ca(2+) are two of the many intracellular signal transduction pathways mediating the control of growth hormone (GH) secretion from somatotropes by neuroendocrine factors. We have previously shown that the NO donor sodium nitroprusside (SNP) elicits Ca(2+) signals in identified goldfish somatotropes. In this study, we examined the relationships between NO- and Ca(2+)-dependent signal transduction mechanisms in GH secretion from primary cultures of dispersed goldfish pituitary cells. Morphologically identified goldfish somatotropes stained positively for an NO-sensitive dye indicating they may be a source of NO production. In 2h static incubation experiments, GH release responses to the NO donor S-nitroso-N-acetyl-d,l-penicillamine (SNAP) were attenuated by CoCl2, nifedipine, verapamil, TMB-8, BHQ, and KN62. In column perifusion experiments, the ability of SNP to induce GH release was impaired in the presence of TMB-8, BHQ, caffeine, and thapsigargin, but not ryanodine. Caffeine-elicited GH secretion was not affected by the NO scavenger PTIO. These results suggest that NO-stimulated GH release is dependent on extracellular Ca(2+) availability and voltage-sensitive Ca(2+) channels, as well as intracellular Ca(2+) store(s) that possess BHQ- and/or thapsigargin-inhibited sarcoplasmic/endoplasmic reticulum Ca(2+)-ATPases, as well as TMB-8- and/or caffeine-sensitive, but not ryanodine-sensitive, Ca(2+)-release channels. Calmodulin kinase-II also likely participates in NO-elicited GH secretion but caffeine-induced GH release is not upstream of NO production. These findings provide insights into how NO actions many integrate with Ca(2+)-dependent signalling mechanisms in goldfish somatotropes and how such interactions may participate in the GH-releasing actions of regulators that utilize both NO- and Ca(2+)-dependent transduction pathways.
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Affiliation(s)
- John P Chang
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta T6G 2E9, Canada.
| | - Grant R Sawisky
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta T6G 2E9, Canada
| | - Philip J Davis
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta T6G 2E9, Canada
| | - Joshua G Pemberton
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta T6G 2E9, Canada
| | - Aja M Rieger
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta T6G 2E9, Canada
| | - Daniel R Barreda
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta T6G 2E9, Canada; Department of Agriculture, Forestry and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2E9, Canada
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Osthole attenuates doxorubicin-induced apoptosis in PC12 cells through inhibition of mitochondrial dysfunction and ROS production. BIOMED RESEARCH INTERNATIONAL 2014; 2014:156848. [PMID: 25013759 PMCID: PMC4075090 DOI: 10.1155/2014/156848] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 05/23/2014] [Accepted: 05/23/2014] [Indexed: 11/18/2022]
Abstract
Doxorubicin (DOX) is a potent, broad-spectrum chemotherapeutic drug used for treatment of several types of cancers. Despite its effectiveness, it has a wide range of toxic side effects, many of which most likely result from its inherent prooxidant activity. It has been reported that DOX has toxic effects on normal tissues, including brain tissue. In the current study, we investigated the protective effect of osthole isolated from Prangos ferulacea (L.) Lindl. on oxidative stress and apoptosis induced by DOX in PC12 as a neuronal model cell line. PC12 cells were pretreated with osthole 2 h after treatment with different concentrations of DOX. 24 h later, the cell viability, mitochondrial membrane potential (MMP), the activity of caspase-3, the expression ratio of Bax/Bcl-2, and the generation of intracellular ROS were detected. We found that pretreatment with osthole on PC12 cells significantly reduced the loss of cell viability, the activity of caspase-3, the increase in Bax/Bcl-2 ratio, and the generation of intracellular ROS induced by DOX. Moreover, pretreatment with osthole led to an increase in MMP in PC12 cells. In conclusion, our results indicated that pretreatment with nontoxic concentrations of osthole protected PC12 cells from DOX-mediated apoptosis by inhibition of ROS production.
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Guarino MP, Ribeiro MJ, Sacramento JF, Conde SV. Chronic caffeine intake reverses age-induced insulin resistance in the rat: effect on skeletal muscle Glut4 transporters and AMPK activity. AGE (DORDRECHT, NETHERLANDS) 2013; 35:1755-1765. [PMID: 22976123 PMCID: PMC3776116 DOI: 10.1007/s11357-012-9475-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Accepted: 09/04/2012] [Indexed: 06/01/2023]
Abstract
The role of caffeine consumption on insulin action is still under debate. The hypothesis that chronic caffeine intake reverses aging-induced insulin resistance in the rat was tested in this work. The mechanism by which caffeine restores insulin sensitivity was also investigated. Six groups of rats were used: 3 months old (3 M), 3 months old caffeine-treated (3MCaf), 12 months old (12 M), 12 months old caffeine-treated (12MCaf), 24 months old (24 M), and 24 months old caffeine-treated (24MCaf). Caffeine was administered in drinking water (1 g/l) during 15 days. Insulin sensitivity was assessed by means of the insulin tolerance test. Blood pressure, body weight, visceral and total fat, fasting glycemia and insulinemia, plasma nonesterified fatty acids (NEFA), total antioxidant capacity (TAC), cortisol, nitric oxide, and catecholamines were monitored. Skeletal muscle Glut4 and 5'-AMP activated protein kinase (AMPK) protein expression and activity were also assessed. Aged rats exhibited diminished insulin sensitivity accompanied by hyperinsulinemia and normoglycemia, increased visceral and total fat, decreased TAC and plasma catecholamines, and also decreased skeletal muscle Glut4 and AMPK protein expression. Chronic caffeine intake restored insulin sensitivity and regularized circulating insulin and NEFA in both aging models. Caffeine neither modified skeletal muscle AMPK expression nor activity in aged rats; however, it decreased visceral and total fat in 12 M rats and it restored skeletal muscle Glut4 expression to control values in 24 M rats. We concluded that chronic caffeine intake reverses aging-induced insulin resistance in rats by decreasing NEFA production and also by increasing Glut4 expression in skeletal muscle.
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Affiliation(s)
- Maria P. Guarino
- />CEDOC, Departamento de Fisiopatologia, Faculdade de Ciências Médicas, NOVA, Lisbon, Portugal
| | - Maria J. Ribeiro
- />CEDOC, Departamento de Farmacologia, Faculdade de Ciências Médicas, NOVA, Campo Mártires da Pátria, 130, 1169-056 Lisbon, Portugal
| | - Joana F. Sacramento
- />CEDOC, Departamento de Farmacologia, Faculdade de Ciências Médicas, NOVA, Campo Mártires da Pátria, 130, 1169-056 Lisbon, Portugal
| | - Sílvia V. Conde
- />CEDOC, Departamento de Farmacologia, Faculdade de Ciências Médicas, NOVA, Campo Mártires da Pátria, 130, 1169-056 Lisbon, Portugal
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Dilshad A, Abulkhair O, Nemenqani D, Tamimi W. Antiproliferative properties of methanolic extract of Nigella sativa against the MDA-MB-231 cancer cell line. Asian Pac J Cancer Prev 2013; 13:5839-42. [PMID: 23317266 DOI: 10.7314/apjcp.2012.13.11.5839] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Breast cancer is the most commonly diagnosed cancer in women in the world and is one of the leading causes of death due to cancer. Health benefits have been linked to additive and synergistic combinations of phytochemicals in fruits and vegetables. Nigella sativa has been shown to possess anti-carcinogenic activity, inhibiting growth of several cancer cell lines in vitro. However, the molecular mechanisms of the anti-cancer properties of Nigella sativa phytochemical extracts have not been completely understood. Our data showed that Nigella sativa extracts significantly inhibited human breast cancer MDA-MB-231 cell proliferation at doses of 2.5-5 μg/mL (P<0.05). Apoptotic induction in MDA-MB-231 cells was observed in a dose-dependent manner after exposure to Nigella sativa extracts for 48 h. Real time PCR and flow cytometry analyses suggested that Nigella sativa extracts possess the ability to suppress the proliferation of human breast cancer cells through induction of apoptosis.
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Affiliation(s)
- Ahmad Dilshad
- Department of Laboratory and Medicine, College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia.
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KOUMTEBAYE E, SU N, HU WF, LIN SS, SUN L, YUAN ST. Antitumor activity of Xiaoaiping injection on human gastric cancer SGC-7901 cells. Chin J Nat Med 2012. [DOI: 10.1016/s1875-5364(12)60068-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Chidambara Murthy KN, Jayaprakasha GK, Kumar V, Rathore KS, Patil BS. Citrus limonin and its glucoside inhibit colon adenocarcinoma cell proliferation through apoptosis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:2314-2323. [PMID: 21338095 DOI: 10.1021/jf104498p] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The current study was an attempt to elucidate the mechanism of human colon cancer cell proliferation inhibition by limonin and limonin glucoside (LG) isolated from seeds of Citrus reticulata. The structures of purified compounds were confirmed by NMR and quantified using HPLC. These compounds of more than 95% purity were subjected to proliferation inhibition assay using human colon adenocarcinoma (SW480) cells. The IC50 value of 54.74 and 37.39 μM was observed for limonin and LG, respectively at 72 h. Following confirmation of proliferation inhibition, pattern of DNA fragmentation and activation of caspase-3 of the cells treated with limonoids suggest involvement of apoptosis. Furthermore, reduction in the transcription ratio of bcl2/bax and induction of cytochrome c release from mitochondria to cytosol with treatment of limonoids confirm the activation of intrinsic apoptosis pathway. The activity of Bax and Bcl2 was confirmed through analysis of mitochondrial membrane potential and intracellular calcium in the cells treated with limonin and LG; the net content of caspase-8 was not affected by limonoids. Results of the current study provide compelling evidence on the induction of mitochondria mediated intrinsic apoptosis by both limonin and LG in cultured SW480 cells for the first time.
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Affiliation(s)
- Kotamballi N Chidambara Murthy
- Vegetable and Fruit Improvement Center, Department of Horticultural Sciences, Texas A&M University, College Station, Texas 77845-2119, United States
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Hosseinzadeh L, Behravan J, Mosaffa F, Bahrami G, Bahrami A, Karimi G. Curcumin potentiates doxorubicin-induced apoptosis in H9c2 cardiac muscle cells through generation of reactive oxygen species. Food Chem Toxicol 2011; 49:1102-9. [PMID: 21295102 DOI: 10.1016/j.fct.2011.01.021] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2010] [Revised: 01/09/2011] [Accepted: 01/27/2011] [Indexed: 02/08/2023]
Abstract
Doxorubicin (DOX) is a widely used chemotherapy agent. The major adverse effect of DOX treatment in cancer patients is the onset of cardiomyopathy and heart failure. Reactive oxygen species (ROS) are proposed to be responsible for DOX cardiotoxicity. Curcumin, a natural compound extracted from Curcuma Longa L., is known for its anti-oxidant properties. It has been identified as increased apoptosis in several cancer cell lines in combination with doxorubicin, but there are few studies about the effect of curcumin and doxorubicin on normal cardiac cells. Therefore, we evaluated the effects of curcumin on apoptosis induced by DOX in cardiac muscle cells. Pretreatment with curcumin significantly increased DOX-induced apoptosis of cardiac muscle cells through down regulation of Bcl-2, up-regulation of caspase-8 and caspase-9. The Bax/Bcl-2 ratio increased significantly after 1h pretreatment with curcumin. As well, curcumin increases ROS generation by DOX. In response to DOX, NF-κB was activated. However, curcumin was able to inhibit NF-κB activation. In conclusion, our results indicated that pretreatment with nontoxic concentrations of curcumin sensitized H9c2 cells to DOX-mediated apoptosis by generation of ROS.
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Affiliation(s)
- Leila Hosseinzadeh
- Toxicology and Pharmacology Department, Faculty of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, Iran
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Apoptosis-mediated proliferation inhibition of human colon cancer cells by volatile principles of Citrus aurantifolia. Food Chem 2009. [DOI: 10.1016/j.foodchem.2008.11.033] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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