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Machado Kayser J, Petry F, Alijar Souza M, Santin Zanatta Schindler M, Vidor Morgan L, Zimmermann Prado Rodrigues G, Mazon SC, Silva Aguiar GP, Galdino da Rocha Pitta M, da Rocha Pitta I, Leal Xavier L, Girardi Müller L, Gehlen G, Heemann Betti A. Antidepressant effect of PT-31, an α₂-adrenoceptor agonist, on lipopolysaccharide-induced depressive-like behavior in mice. Behav Pharmacol 2024; 35:338-350. [PMID: 39051900 DOI: 10.1097/fbp.0000000000000785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
Increasing evidence indicates that neuroinflammation, oxidative stress, and neurotrophic factors play a key role in the pathophysiology of major depressive disorder (MDD). In addition, the attenuation of inflammatory response has been considered a putative mechanism for MDD treatment. PT-31 is an imidazolidine derivative and a putative α₂-adrenoceptor agonist that has previously demonstrated antinociceptive activity. The present study aimed to investigate the effect of PT-31 on depressive-like behavior and lipopolysaccharide-induced neurochemical changes. To this end, mice received intraperitoneally saline or lipopolysaccharide (600 µg/kg), and 5 h postinjection animals were orally treated with saline, PT-31 (3, 10, and 30 mg/kg), or fluoxetine (30 mg/kg). Mice were subjected to the open field test (OFT) 6 and 24 h after lipopolysaccharide administration and to the tail suspension test (TST) 24 h postlipopolysaccharide. Subsequently, animals were euthanized, and brains were dissected for neurochemical analyses. The administration of lipopolysaccharide-induced sickness- and depressive-like behaviors, besides promoting an increase in myeloperoxidase activity and a reduction in brain-derived neurotrophic factor (BDNF) levels. Noteworthy, PT-31 3 mg/kg attenuated lipopolysaccharide-induced decreased locomotor activity 6 h after lipopolysaccharide in the OFT. All tested doses of PT-31 significantly reduced the immobility time of animals in the TST and attenuated lipopolysaccharide-induced increased myeloperoxidase activity in the cortex of mice. Our results demonstrate that PT-31 ameliorates behavioral changes promoted by lipopolysaccharide in OFT and TST, which is possibly mediated by attenuation of the inflammatory response.
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Affiliation(s)
- Juliana Machado Kayser
- Postgraduate Program in Toxicology and Analytical Toxicology, Health Sciences Institute, Feevale University, Novo Hamburgo
| | - Fernanda Petry
- Molecular Genetics and Ecotoxicology Laboratory, Sciences and Environmental Area, Community University of Chapecó Region (Unochapecó)
- Postgraduate Program in Environmental Sciences, Sciences and Environmental Area, Community University of Chapecó Region (Unochapecó)
| | - Maryelen Alijar Souza
- Postgraduate Program in Environmental Sciences, Sciences and Environmental Area, Community University of Chapecó Region (Unochapecó)
| | - Monica Santin Zanatta Schindler
- Postgraduate Program in Environmental Sciences, Sciences and Environmental Area, Community University of Chapecó Region (Unochapecó)
| | - Letícia Vidor Morgan
- Pharmacy Course, Health Sciences Area, Community University of Chapecó Region (Unochapecó), Chapecó
| | | | - Samara Cristina Mazon
- Molecular Genetics and Ecotoxicology Laboratory, Sciences and Environmental Area, Community University of Chapecó Region (Unochapecó)
- Postgraduate Program in Environmental Sciences, Sciences and Environmental Area, Community University of Chapecó Region (Unochapecó)
| | - Gean Pablo Silva Aguiar
- Molecular Genetics and Ecotoxicology Laboratory, Sciences and Environmental Area, Community University of Chapecó Region (Unochapecó)
- Postgraduate Program in Environmental Sciences, Sciences and Environmental Area, Community University of Chapecó Region (Unochapecó)
| | - Marina Galdino da Rocha Pitta
- Nucleus of Research in Therapeutic Innovation Suely Galdino (NUPIT SG), Biosciences Center, Federal University of Pernambuco, Recife
| | - Ivan da Rocha Pitta
- Nucleus of Research in Therapeutic Innovation Suely Galdino (NUPIT SG), Biosciences Center, Federal University of Pernambuco, Recife
| | - Léder Leal Xavier
- Postgraduate Program in Cellular and Molecular Biology, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Liz Girardi Müller
- Molecular Genetics and Ecotoxicology Laboratory, Sciences and Environmental Area, Community University of Chapecó Region (Unochapecó)
- Postgraduate Program in Environmental Sciences, Sciences and Environmental Area, Community University of Chapecó Region (Unochapecó)
| | - Günther Gehlen
- Postgraduate Program in Toxicology and Analytical Toxicology, Health Sciences Institute, Feevale University, Novo Hamburgo
- Postgraduate Program in Environmental Quality, Health Sciences Institute, Feevale University, Novo Hamburgo
| | - Andresa Heemann Betti
- Postgraduate Program in Toxicology and Analytical Toxicology, Health Sciences Institute, Feevale University, Novo Hamburgo
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Azzini E, Peña-Corona SI, Hernández-Parra H, Chandran D, Saleena LAK, Sawikr Y, Peluso I, Dhumal S, Kumar M, Leyva-Gómez G, Martorell M, Sharifi-Rad J, Calina D. Neuroprotective and anti-inflammatory effects of curcumin in Alzheimer's disease: Targeting neuroinflammation strategies. Phytother Res 2024; 38:3169-3189. [PMID: 38616356 DOI: 10.1002/ptr.8200] [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: 01/01/2024] [Revised: 03/17/2024] [Accepted: 03/18/2024] [Indexed: 04/16/2024]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized by the accumulation of amyloid-beta plaques and neurofibrillary tangles, leading to neuronal loss. Curcumin, a polyphenolic compound derived from Curcuma longa, has shown potential neuroprotective effects due to its anti-inflammatory and antioxidant properties. This review aims to synthesize current preclinical data on the anti-neuroinflammatory mechanisms of curcumin in the context of AD, addressing its pharmacokinetics, bioavailability, and potential as a therapeutic adjunct. An exhaustive literature search was conducted, focusing on recent studies within the last 10 years related to curcumin's impact on neuroinflammation and its neuroprotective role in AD. The review methodology included sourcing articles from specialized databases using specific medical subject headings terms to ensure precision and relevance. Curcumin demonstrates significant neuroprotective properties by modulating neuroinflammatory pathways, scavenging reactive oxygen species, and inhibiting the production of pro-inflammatory cytokines. Despite its potential, challenges remain regarding its limited bioavailability and the scarcity of comprehensive human clinical trials. Curcumin emerges as a promising therapeutic adjunct in AD due to its multimodal neuroprotective benefits. However, further research is required to overcome challenges related to bioavailability and to establish effective dosing regimens in human subjects. Developing novel delivery systems and formulations may enhance curcumin's therapeutic potential in AD treatment.
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Affiliation(s)
- Elena Azzini
- Research Centre for Food and Nutrition, Council for Agricultural Research and Economics (CREA-AN), Rome, Italy
| | - Sheila I Peña-Corona
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Héctor Hernández-Parra
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Deepak Chandran
- Department of Veterinary Sciences and Animal Husbandry, Amrita School of Agricultural Sciences, Amrita Vishwa Vidyapeetham University, Coimbatore, India
| | | | - Yousef Sawikr
- Department of Pharmacology and Toxicology, Faculty of Medicine University of Ajdabiya, Ajdabiya, Libya
| | - Ilaria Peluso
- Research Centre for Food and Nutrition, Council for Agricultural Research and Economics (CREA-AN), Rome, Italy
| | - Sangram Dhumal
- Division of Horticulture, RCSM College of Agriculture, Kolhapur, India
| | - Manoj Kumar
- Chemical and Biochemical Processing Division, ICAR-Central Institute for Research on Cotton Technology, Mumbai, India
| | - Gerardo Leyva-Gómez
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Miquel Martorell
- Department of Nutrition and Dietetics, Faculty of Pharmacy, and Centre for Healthy Living, University of Concepción, Concepción, Chile
| | | | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, Craiova, Romania
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Velasco-Rodríguez LDC, García HS, Rascón-Díaz MP. Curcumin and omega-3 polyunsaturated fatty acids as bioactive food components with synergistic effects on Alzheimer's disease. Psychogeriatrics 2024; 24:701-718. [PMID: 38528391 DOI: 10.1111/psyg.13115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 02/20/2024] [Accepted: 03/16/2024] [Indexed: 03/27/2024]
Abstract
Curcumin and omega-3 polyunsaturated fatty acids (ω-3 PUFA) are multifunctional compounds which play an important role in Alzheimer's disease (AD) and little has been addressed about the role of these two compounds together in the progression of the disease. There is evidence of the beneficial effect of combined administration of ω-3 PUFA and other dietary supplements such as vitamins and polyphenols in the prevention of AD, although much remains to be understood about their possible complementary or synergistic activity. Therefore, the objective of this work is to review the research focused on studying the effect and mechanisms of action of curcumin, ω-3 PUFA, and the combination of these nutraceutical compounds, particularly on AD, and to integrate the possible ways in which these compounds can potentiate their effect. The most important pathophysiologies that manifest in AD will be addressed, in order to have a better understanding of the mechanisms of action through which these bioactive compounds exert a neuroprotective effect.
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Affiliation(s)
| | - Hugo S García
- UNIDA, Tecnológico Nacional de México/IT de Veracruz, Veracruz, Mexico
| | - Martha P Rascón-Díaz
- Centro de Investigación y Desarrollo en Alimentos, Universidad Veracruzana, Xalapa, Mexico
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Arab FL, Hoseinzadeh A, Mohammadi FS, Rajabian A, Faridzadeh A, Mahmoudi M. Immunoregulatory effects of nanocurcumin in inflammatory milieu: Focus on COVID-19. Biomed Pharmacother 2024; 171:116131. [PMID: 38198954 DOI: 10.1016/j.biopha.2024.116131] [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: 10/12/2023] [Revised: 12/31/2023] [Accepted: 01/02/2024] [Indexed: 01/12/2024] Open
Abstract
The use of natural compounds, such as curcumin, to treat infections caused by bacteria, viruses, fungi, parasites, inflammatory diseases, and various types of cancer is an active and dynamic area of research. Curcumin has a long history of use in the food industry, and there is currently a growing interest in its therapeutic applications. Numerous clinical trials have consistently shown that curcumin, a polyphenolic compound, is safe and well-tolerated even at high doses. There is no toxicity limit. However, the clinical efficacy of curcumin has been limited by its constraints. However, scientific evidence indicates that the use of adjuvants and carriers, such as nanoparticles, exosomes, micelles, and liposomes, can help overcome this limitation. The properties, functions, and human benefits of using nanocurcumin are well-supported by scientific research. Recent evidence suggests that nanocurcumin may be a beneficial therapeutic modality due to its potential to decrease gene expression and secretion of specific inflammatory biomarkers involved in the cytokinestorm seen in severe COVID-19, as well as increase lymphocyte counts. Nanocurcumin has demonstrated the ability to improve clinical manifestations and modulate immune response and inflammation in various autoinflammatory diseases. Additionally, its efficacy, affordability, and safety make it a promising replacement for residual cancer cells after tumor removal. However, further studies are necessary to evaluate the safety and efficacy of nanocurcumin as a new therapeutic in clinical trials, including appropriate dosage, frequency, and duration.
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Affiliation(s)
- Fahimeh Lavi Arab
- Department of Immunology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Immunology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Akram Hoseinzadeh
- Immunology Research Center, Bu‑Ali Research Institute, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Fatemeh Sadat Mohammadi
- Department of Immunology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Immunology Research Center, Inflammation and Inflammatory Diseases Division, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Arezoo Rajabian
- Neuroscience Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Arezoo Faridzadeh
- Department of Immunology and Allergy, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahmoud Mahmoudi
- Department of Immunology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Immunology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
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Phing AH, Makpol S, Nasaruddin ML, Wan Zaidi WA, Ahmad NS, Embong H. Altered Tryptophan-Kynurenine Pathway in Delirium: A Review of the Current Literature. Int J Mol Sci 2023; 24:5580. [PMID: 36982655 PMCID: PMC10056900 DOI: 10.3390/ijms24065580] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/09/2023] [Accepted: 03/11/2023] [Indexed: 03/17/2023] Open
Abstract
Delirium, a common form of acute brain dysfunction, is associated with increased morbidity and mortality, especially in older patients. The underlying pathophysiology of delirium is not clearly understood, but acute systemic inflammation is known to drive delirium in cases of acute illnesses, such as sepsis, trauma, and surgery. Based on psychomotor presentations, delirium has three main subtypes, such as hypoactive, hyperactive, and mixed subtype. There are similarities in the initial presentation of delirium with depression and dementia, especially in the hypoactive subtype. Hence, patients with hypoactive delirium are frequently misdiagnosed. The altered kynurenine pathway (KP) is a promising molecular pathway implicated in the pathogenesis of delirium. The KP is highly regulated in the immune system and influences neurological functions. The activation of indoleamine 2,3-dioxygenase, and specific KP neuroactive metabolites, such as quinolinic acid and kynurenic acid, could play a role in the event of delirium. Here, we collectively describe the roles of the KP and speculate on its relevance in delirium.
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Affiliation(s)
- Ang Hui Phing
- Department of Emergency Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, Kuala Lumpur 56000, Malaysia
| | - Suzana Makpol
- Department of Biochemistry, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, Kuala Lumpur 56000, Malaysia; (S.M.)
| | - Muhammad Luqman Nasaruddin
- Department of Biochemistry, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, Kuala Lumpur 56000, Malaysia; (S.M.)
| | - Wan Asyraf Wan Zaidi
- Department of Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, Kuala Lumpur 56000, Malaysia
| | - Nurul Saadah Ahmad
- Department of Emergency Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, Kuala Lumpur 56000, Malaysia
| | - Hashim Embong
- Department of Emergency Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, Kuala Lumpur 56000, Malaysia
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SHARIFI-RAD J, ALMARHOON ZM, ADETUNJI CO, SAMUEL MICHAEL O, CHANDRAN D, RADHA R, SHARMA N, KUMAR M, CALINA D. Neuroprotective effect of curcumin and curcumin-integrated nanocarriers in stroke: from mechanisms to therapeutic opportunities. MINERVA BIOTECHNOLOGY AND BIOMOLECULAR RESEARCH 2022. [DOI: 10.23736/s2724-542x.22.02946-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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dos Santos RB, Funguetto-Ribeiro AC, Maciel TR, Fonseca DP, Favarin FR, Nogueira-Librelotto DR, de Gomes MG, Nakamura TU, Rolim CMB, Haas SE. In vivo and in vitro per se effect evaluation of Polycaprolactone and Eudragit® RS100-based nanoparticles. Biomed Pharmacother 2022; 153:113410. [DOI: 10.1016/j.biopha.2022.113410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/11/2022] [Accepted: 07/11/2022] [Indexed: 11/26/2022] Open
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de Oliveira Pacheco C, de Gomes MG, da Silva Neto MR, Parisotto AJM, Dos Santos RB, Maciel TR, Ribeiro ACF, Giacomeli R, Haas SE. Surface-functionalized curcumin-loaded polymeric nanocapsules could block apomorphine-induced behavioral changes in rats. Pharmacol Rep 2021; 74:135-147. [PMID: 34739705 DOI: 10.1007/s43440-021-00331-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 10/01/2021] [Accepted: 10/04/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Surface functionalization enhances the properties and characteristics of polymeric nanocapsules (NCs) mainly due to the surface charge, surfactants, and polymer coating type. Curcumin (CUR) is a bioactive compound with several proven pharmacological properties and low bioavailability. This study aimed to develop anionic (poly-ɛ-caprolactone; PCL) and cationic (Eudragit® RS100 (EUD)) NCs prepared with sorbitan monostearate (Span 60®) or sorbitan monooleate (Span 80®), coated with d-α-tocopherol polyethylene glycol 1000 succinate (TPGS) and optimized using 23 factorial analysis. Subsequently, the biological activity was evaluated. METHODS A two-level, three-factor design (polymer, Span type, and TPGS concentration) was used. The biological effects of CUR-loaded TPGS-coated cationic and anionic NCs were assessed in apomorphine-induced stereotyped behavior in rats. RESULTS The type of polymer (anionic or cationic) and Span® had a factorial influence on the physical and chemical characteristics of NCs according to the changes in TPGS concentrations. Both cationic and anionic CUR-NCs could block apomorphine-induced behavioral changes. CONCLUSIONS The CUR-loaded TPGS-coated NCs proved to be a promising brain delivery system.
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Affiliation(s)
- Camila de Oliveira Pacheco
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Pampa, Campus Uruguaiana, BR 472, Km 7, Uruguaiana, RS, 97500-970, Brazil
| | - Marcelo Gomes de Gomes
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Pampa, Campus Uruguaiana, BR 472, Km 7, Uruguaiana, RS, 97500-970, Brazil
| | - Manoel Rodrigues da Silva Neto
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Pampa, Campus Uruguaiana, BR 472, Km 7, Uruguaiana, RS, 97500-970, Brazil
| | - Alcides José Martins Parisotto
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Pampa, Campus Uruguaiana, BR 472, Km 7, Uruguaiana, RS, 97500-970, Brazil
| | - Renata Bem Dos Santos
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Pampa, Campus Uruguaiana, BR 472, Km 7, Uruguaiana, RS, 97500-970, Brazil
| | - Tamara Ramos Maciel
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Santa Maria, Av. Roraima no. 1000, Santa Maria, RS, 97105-900, Brazil
| | - Ana Cláudia Funguetto Ribeiro
- Postgraduate Program in Biochemistry, Federal University of Pampa, Campus Uruguaiana, BR 472, Km 7, Uruguaiana, RS, 97500-970, Brazil
| | - Renata Giacomeli
- Postgraduate Program in Biochemistry, Federal University of Pampa, Campus Uruguaiana, BR 472, Km 7, Uruguaiana, RS, 97500-970, Brazil
| | - Sandra Elisa Haas
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Pampa, Campus Uruguaiana, BR 472, Km 7, Uruguaiana, RS, 97500-970, Brazil.
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Santa Maria, Av. Roraima no. 1000, Santa Maria, RS, 97105-900, Brazil.
- Postgraduate Program in Biochemistry, Federal University of Pampa, Campus Uruguaiana, BR 472, Km 7, Uruguaiana, RS, 97500-970, Brazil.
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Mansouri M, Sotoudeh MM, Shamshirian A, Beheshti F, Hosseini M, Sadeghnia HR. Beneficial effects of selenium against the behavioral consequences of lipopolysaccharide administration in rats. LEARNING AND MOTIVATION 2021. [DOI: 10.1016/j.lmot.2021.101713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lopresti AL, Smith SJ, Rea A, Michel S. Efficacy of a curcumin extract (Curcugen™) on gastrointestinal symptoms and intestinal microbiota in adults with self-reported digestive complaints: a randomised, double-blind, placebo-controlled study. BMC Complement Med Ther 2021; 21:40. [PMID: 33478482 PMCID: PMC7818735 DOI: 10.1186/s12906-021-03220-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 01/14/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND There is preliminary evidence to suggest curcumin can alleviate digestive symptoms in adults with self-reported digestive complaints and irritable bowel syndrome. However, in all these trials, curcumin was used as a component of a multi-herbal combination and there were consistent concerns associated with risk of bias in most studies. The goal of this study was to investigate the effects of a curcumin extract (Curcugen™) on gastrointestinal symptoms, mood, and overall quality of life in adults presenting with self-reported digestive complaints. Moreover, to determine the potential therapeutic mechanisms of action associated with curcumin, its effects on intestinal microbiota and small intestinal bowel overgrowth (SIBO) were examined. METHODS In this 8-week, parallel-group, double-blind, randomised controlled trial, 79 adults with self-reported digestive complaints were recruited and randomised to receive either a placebo or 500 mg of the curcumin extract, Curcugen™. Outcome measures included the Gastrointestinal Symptom Rating Scale (GSRS), intestinal microbial profile (16S rRNA), Depression, Anxiety, and Stress Scale - 21 (DASS-21), Short Form-36 (SF-36), and SIBO breath test. RESULTS Based on self-report data collected from 77 participants, curcumin was associated with a significantly greater reduction in the GSRS total score compared to the placebo. There was also a greater reduction in the DASS-21 anxiety score. No other significant between-group changes in self-report data were identified. An examination of changes in the intestinal microbial profile and SIBO test revealed curcumin had no significant effect on these parameters. Curcumin was well-tolerated with no significant adverse events. CONCLUSIONS The curcumin extract, Curcugen™, administered for 8 weeks at a dose of 500 mg once daily was associated with greater improvements in digestive complaints and anxiety levels in adults with self-reported digestive complaints. Compared to the placebo, there were no significant changes in intestinal microbiota or SIBO; however, further research using larger samples and testing methods that allow more detailed microbial analyses will be important. An investigation into other potential mechanisms associated with curcumin's gastrointestinal-relieving effects will also be important such as examining its influence on the intestinal barrier function, inflammation, neurotransmitter activity, and visceral sensitivity. TRIAL REGISTRATION Australian New Zealand Clinical Trials Registry, Trial ID. ACTRN12619001236189 . Registered 6 September 2019.
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Affiliation(s)
- Adrian L Lopresti
- Clinical Research Australia, Perth, Western Australia, 6023, Australia.
- College of Science, Health, Engineering and Education, Murdoch University, Perth, Western Australia, 6150, Australia.
| | - Stephen J Smith
- Clinical Research Australia, Perth, Western Australia, 6023, Australia
- College of Science, Health, Engineering and Education, Murdoch University, Perth, Western Australia, 6150, Australia
| | - Alethea Rea
- College of Science, Health, Engineering and Education, Murdoch University, Perth, Western Australia, 6150, Australia
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Evaluation of curcumin-loaded polymeric nanocapsules with different coatings in chick embryo model: influence on angiogenesis, teratogenesis and oxidative stress. Pharmacol Rep 2021; 73:563-573. [PMID: 33471303 DOI: 10.1007/s43440-021-00218-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 12/29/2020] [Accepted: 01/07/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Curcumin (CUR) is a bioactive compound with several proven pharmacological properties. However, the major limitation for therapeutic use of CUR is its low bioavailability. In this sense, an alternative to this question is the use of polymeric nanocapsules (NC) as drug/nutraceutical delivery systems. Thus, the aim of current study was to assess the effect of CUR-loaded NC and their different coatings in chick embryo model, evaluating angiogenic, teratogenic and oxidative stress parameters. METHODS The physicochemical characterization of unloaded and loaded NC with different coatings: (U-NC (P80), U-NC (PEG), U-NC (EUD), U-NC (CS), CUR-NC (P80), CUR-NC (PEG), CUR-NC (EUD) and CUR-NC (CS)) were performed. After 9 days of incubation, eggs were treated (10 mL/kg eggs; via injection) with NC (unloaded and loaded with CUR) and CUR-solution. In sequence, hen's egg test-chorioallantoic membrane (HET-CAM), angiogenic assay, external abnormalities, weight of embryos and oxidative stress markers (TBARS, NPSH, ROS and CAT) were analyzed. RESULTS CUR-NC (P80, PEG, EUD and CS) treatments caused antiangiogenic and non-teratogenic effects in chick embryo model. Still, CUR-NC (P80), CUR-NC (PEG), CUR-NC (EUD) and CUR-NC (CS) did not alter markers of oxidative stress (TBARS, NPSH, CAT) studied. Only CUR-NC (EUD) caused increase in ROS levels. CONCLUSION Wherefore, these findings of present study represent a advance in research of drug/nutraceutical delivery systems.
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Giacomeli R, Guerra Teixeira FE, Carvalho FB, Pacheco CO, Martins Parisotto AJ, Funguetto Ribeiro AC, Gomes de Gomes M, Haas SE. Curcumin-loaded poly(ϵ-caprolactone) lipid-core nanocapsules: Evaluation of fetal and maternal toxicity. Food Chem Toxicol 2020; 144:111625. [PMID: 32738367 DOI: 10.1016/j.fct.2020.111625] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/06/2020] [Accepted: 07/15/2020] [Indexed: 12/31/2022]
Abstract
This study was designed to examine fetal and maternal toxicity of curcumin (CURC) loaded lipid-core nanocapsules (LNC) prepared with poly(ϵ-caprolactone) as a polymer, administered during the organogenesis period. Free CURC and CURC loaded-LNC (C-LNC) (2 mg/kg), blank LNC (B-LNC) and saline (CONTROL) were administered per oral route from the 7° to 13° gestational day (GD). Dams were evaluated daily for body weight gain, clinical signs, water and food intake. On 20° GD, dams were euthanized, organs were weighed and blood was collected for biochemical determinations. Fetal biometrics and external morphological anomalies were assessed. Also, were performed histopathological analysis of placenta and measurement of cytokines levels in placental and fetal liver tissues. All groups did not cause changes in dams during the pregnancy. Furthermore, treatments did not cause external morphological changes and delayed fetal development. Still, for histopathological analysis of placental tissue, treatments did not cause alterations in evaluated parameters. For cytokines levels, CURC and C-LNC caused a decrease in placental levels of TNF-α. Therefore, we have demonstrated that C-LNC did not cause toxicological effects (mother and fetus), in the same manner as pattern bioactive compound, proving to be a promising nutraceutical delivery system for maternal supplementation with CURC.
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Affiliation(s)
- Renata Giacomeli
- Programa de Pós-Graduação em Bioquímica, Universidade Federal do Pampa, UNIPAMPA, Uruguaiana, RS, 97500-970, Brazil
| | | | - Felipe Barbosa Carvalho
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Pampa, UNIPAMPA, Uruguaiana, RS, 97500-970, Brazil
| | - Camila Oliveira Pacheco
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Pampa, UNIPAMPA, Uruguaiana, RS, 97500-970, Brazil
| | - Alcides José Martins Parisotto
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Pampa, UNIPAMPA, Uruguaiana, RS, 97500-970, Brazil
| | - Ana Claudia Funguetto Ribeiro
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Pampa, UNIPAMPA, Uruguaiana, RS, 97500-970, Brazil
| | - Marcelo Gomes de Gomes
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Pampa, UNIPAMPA, Uruguaiana, RS, 97500-970, Brazil
| | - Sandra Elisa Haas
- Programa de Pós-Graduação em Bioquímica, Universidade Federal do Pampa, UNIPAMPA, Uruguaiana, RS, 97500-970, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Pampa, UNIPAMPA, Uruguaiana, RS, 97500-970, Brazil.
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