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Abdelqader A, Abuajamieh M, Abedal-Majed M, Al-Qaisi M, Al-Fataftah AR. Suppression of inflammatory responses in heat-stressed broiler chickens by bovine casein. J Therm Biol 2023; 113:103536. [PMID: 37055099 DOI: 10.1016/j.jtherbio.2023.103536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 03/05/2023] [Accepted: 03/07/2023] [Indexed: 03/14/2023]
Abstract
This study was conducted to investigate the potential of bovine casein to mitigate the inflammatory responses in heat-stressed broiler chickens. One-day-old Ross 308 male broiler chickens (n = 1200) were reared using standard management practices. On d 22 of age, birds were divided into 2 main groups and kept either under thermoneutral temperature (21 ± 1 °C) or chronic heat stress (30 ± 1 °C). Each group was further divided into 2 sub-groups and fed either the control diet (Con) or the casein (3 g/kg) supplemented diet (CAS). The study consisted of four treatments; each treatment was replicated 12 times with 25 birds per replicate. The treatments were as follow; CCon: control temperature + control diet, CCAS: control temperature + casein diet, HCon: heat stress + control diet, and HCAS: heat stress + casein diet. The casein and heat stress protocols were applied from d 22 to d 35 of age. Casein increased the growth performance of the HCAS (P < 0.05) when compared to the HCon. Additionally, the maximum feed conversion efficiency was exhibited (P < 0.05) by the HCAS. Compared with CCon, heat stress increased (P < 0.05) the levels of proinflammatory cytokines. Casein lowered (P < 0.05) the levels of proinflammatory cytokines and increased (P < 0.05) the levels of anti-inflammatory cytokines in response to heat exposure. Heat stress decreased (P < 0.05) villus height, crypt depth, villus surface area, and absorptive epithelial cell area. Casein increased (P < 0.05) villus height, crypt depth, villus surface area, and absorptive epithelial cell area in CCAS and HCAS. Furthermore, casein improved intestinal microflora balance by enhancing (P < 0.05) the growth of intestinal beneficial bacteria and decreasing (P < 0.05) the intestinal colonization with the pathogenic bacteria. In conclusion, dietary inclusion of bovine casein would suppress the inflammatory responses in heat-stressed broiler chickens. Such potential could be utilized as an effective management approach to promote gut health and homeostasis during heat stress conditions.
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Affiliation(s)
- Anas Abdelqader
- Department of Animal Production, School of Agriculture, The University of Jordan, Amman, 11942, Jordan.
| | - Mohannad Abuajamieh
- Department of Animal Production, School of Agriculture, The University of Jordan, Amman, 11942, Jordan
| | - Mohamed Abedal-Majed
- Department of Animal Production, School of Agriculture, The University of Jordan, Amman, 11942, Jordan
| | - Mohmmad Al-Qaisi
- Department of Animal Production, School of Agriculture, The University of Jordan, Amman, 11942, Jordan
| | - Abdur-Rahman Al-Fataftah
- Department of Animal Production, School of Agriculture, The University of Jordan, Amman, 11942, Jordan
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Mazzei A, Pagliara P, Del Vecchio G, Giampetruzzi L, Croce F, Schiavone R, Verri T, Barca A. Cytoskeletal Responses and Aif-1 Expression in Caco-2 Monolayers Exposed to Phorbol-12-Myristate-13-Acetate and Carnosine. BIOLOGY 2022; 12:biology12010036. [PMID: 36671729 PMCID: PMC9855102 DOI: 10.3390/biology12010036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 12/01/2022] [Accepted: 12/23/2022] [Indexed: 12/28/2022]
Abstract
The dis(re)organization of the cytoskeletal actin in enterocytes mediates epithelial barrier dys(re)function, playing a key role in modulating epithelial monolayer's integrity and remodeling under transition from physiological to pathological states. Here, by fluorescence-based morphological and morphometric analyses, we detected differential responses of cytoskeletal actin in intestinal epithelial Caco-2 cell monolayers at two different stages of their spontaneous differentiation, i.e., undifferentiated cells at 7 days post-seeding (dps) and differentiated enterocyte-like cells at 21 dps, upon challenge in vitro with the inflammation-mimicking stimulus of phorbol-12-myristate-13-acetate (PMA). In addition, specific responses were found in the presence of the natural dipeptide carnosine detecting its potential counteraction against PMA-induced cytoskeletal alterations and remodeling in differentiated Caco-2 monolayers. In such an experimental context, by both immunocytochemistry and Western blot assays in Caco-2 monolayers, we identified the expression of the allograft inflammatory factor 1 (AIF-1) as protein functionally related to both inflammatory and cytoskeletal pathways. In 21 dps monolayers, particularly, we detected variations of its intracellular localization associated with the inflammatory stimulus and its mRNA/protein increase associated with the differentiated 21 dps enterocyte-like monolayer compared to the undifferentiated cells.
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Affiliation(s)
- Aurora Mazzei
- Department of Biological and Environmental Sciences and Technologies (DeBEST), University of Salento, 73100 Lecce, Italy
| | - Patrizia Pagliara
- Department of Biological and Environmental Sciences and Technologies (DeBEST), University of Salento, 73100 Lecce, Italy
- Correspondence: (P.P.); (A.B.); Tel.: +39-0832-298662 (A.B.)
| | - Gianmarco Del Vecchio
- Department of Biological and Environmental Sciences and Technologies (DeBEST), University of Salento, 73100 Lecce, Italy
| | - Lucia Giampetruzzi
- Institute for Microelectronics and Microsystems IMM-CNR, Via per Monteroni “Campus Ecotekne”, 73100 Lecce, Italy
| | - Francesca Croce
- Department of Biological and Environmental Sciences and Technologies (DeBEST), University of Salento, 73100 Lecce, Italy
| | - Roberta Schiavone
- Department of Biological and Environmental Sciences and Technologies (DeBEST), University of Salento, 73100 Lecce, Italy
| | - Tiziano Verri
- Department of Biological and Environmental Sciences and Technologies (DeBEST), University of Salento, 73100 Lecce, Italy
| | - Amilcare Barca
- Department of Biological and Environmental Sciences and Technologies (DeBEST), University of Salento, 73100 Lecce, Italy
- Correspondence: (P.P.); (A.B.); Tel.: +39-0832-298662 (A.B.)
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Isolation and characterization of novel peptides from fermented products of Lactobacillus for ulcerative colitis prevention and treatment. FOOD SCIENCE AND HUMAN WELLNESS 2022. [DOI: 10.1016/j.fshw.2022.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Barbara G, Barbaro MR, Fuschi D, Palombo M, Falangone F, Cremon C, Marasco G, Stanghellini V. Corrigendum: Inflammatory and Microbiota-Related Regulation of the Intestinal Epithelial Barrier. Front Nutr 2021; 8:790387. [PMID: 34790692 PMCID: PMC8591313 DOI: 10.3389/fnut.2021.790387] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 12/18/2022] Open
Affiliation(s)
- Giovanni Barbara
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Maria Raffaella Barbaro
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Daniele Fuschi
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Marta Palombo
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Francesca Falangone
- Medical-Surgical Department of Clinical Sciences and Translational Medicine, University Sapienza, Rome, Italy
| | - Cesare Cremon
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Giovanni Marasco
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Vincenzo Stanghellini
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
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Barbara G, Barbaro MR, Fuschi D, Palombo M, Falangone F, Cremon C, Marasco G, Stanghellini V. Inflammatory and Microbiota-Related Regulation of the Intestinal Epithelial Barrier. Front Nutr 2021; 8:718356. [PMID: 34589512 PMCID: PMC8475765 DOI: 10.3389/fnut.2021.718356] [Citation(s) in RCA: 105] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 08/12/2021] [Indexed: 12/19/2022] Open
Abstract
The intestinal epithelial barrier (IEB) is one of the largest interfaces between the environment and the internal milieu of the body. It is essential to limit the passage of harmful antigens and microorganisms and, on the other side, to assure the absorption of nutrients and water. The maintenance of this delicate equilibrium is tightly regulated as it is essential for human homeostasis. Luminal solutes and ions can pass across the IEB via two main routes: the transcellular pathway or the paracellular pathway. Tight junctions (TJs) are a multi-protein complex responsible for the regulation of paracellular permeability. TJs control the passage of antigens through the IEB and have a key role in maintaining barrier integrity. Several factors, including cytokines, gut microbiota, and dietary components are known to regulate intestinal TJs. Gut microbiota participates in several human functions including the modulation of epithelial cells and immune system through the release of several metabolites, such as short-chain fatty acids (SCFAs). Mediators released by immune cells can induce epithelial cell damage and TJs dysfunction. The subsequent disruption of the IEB allows the passage of antigens into the mucosa leading to further inflammation. Growing evidence indicates that dysbiosis, immune activation, and IEB dysfunction have a role in several diseases, including irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), and gluten-related conditions. Here we summarize the interplay between the IEB and gut microbiota and mucosal immune system and their involvement in IBS, IBD, and gluten-related disorders.
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Affiliation(s)
- Giovanni Barbara
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Maria Raffaella Barbaro
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Daniele Fuschi
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Marta Palombo
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Francesca Falangone
- Medical-Surgical Department of Clinical Sciences and Translational Medicine, University Sapienza, Rome, Italy
| | - Cesare Cremon
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Giovanni Marasco
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Vincenzo Stanghellini
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
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Santiago-López L, Hernández-Mendoza A, Vallejo-Cordoba B, Wall-Medrano A, González-Córdova AF. Th17 immune response in inflammatory bowel disease: Future roles and opportunities for lactic acid bacteria and bioactive compounds released in fermented milk. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.03.051] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Rafiq S, Gulzar N, Sameen A, Huma N, Hayat I, Ijaz R. Functional role of bioactive peptides with special reference to cheeses. INT J DAIRY TECHNOL 2020. [DOI: 10.1111/1471-0307.12732] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Saima Rafiq
- Department of Food Science and Technology Faculty of Agriculture University of Poonch Rawalakot 12350 Azad kashmirPakistan
| | - Nabila Gulzar
- Department of Dairy Technology University of Veterinary and Animal Sciences Lahore Lahore55300Pakistan
| | - Aysha Sameen
- National Institute of Food Science and Technology University of Agriculture Faisalabad38040Pakistan
| | - Nuzhat Huma
- National Institute of Food Science and Technology University of Agriculture Faisalabad38040Pakistan
| | - Imran Hayat
- Department of Food Science and Technology Faculty of Agriculture University of Poonch Rawalakot 12350 Azad kashmirPakistan
| | - Raina Ijaz
- Department of Horticulture Faculty of Agriculture University of Poonch Rawalakot 12350 Azad Kashmir Pakistan
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Zhu N, Liu R, He LX, Mao RX, Liu XR, Zhang T, Hao YT, Fan R, Xu MH, Li Y. Radioprotective Effect of Walnut Oligopeptides Against Gamma Radiation-Induced Splenocyte Apoptosis and Intestinal Injury in Mice. Molecules 2019; 24:molecules24081582. [PMID: 31013611 PMCID: PMC6515242 DOI: 10.3390/molecules24081582] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 04/18/2019] [Accepted: 04/20/2019] [Indexed: 12/31/2022] Open
Abstract
Walnut oligopeptides (WOPs) intake is associated with the augment of the antioxidant defense system and immune system. The chief object of this study is to evaluate the radioprotective effect of walnut oligopeptides extracted from walnut seed protein against 60Coγ-irradiation induced damage in mice. Female BALB/c mice were administered WOPs through drinking water for 14 days until a single dose of whole-body 60Coγ-irradiation. The 30-day survival test was carried out in the first group (8 Gy), and the other two groups (3.5 Gy) were sacrificed at 3 days and 14 days post-irradiation. Blood and organ samples of mice in the three groups were collected, the histopathological analysis and immunohistochemistry were conducted. The number of peripheral blood leukocytes, bone marrow DNA content, inflammatory cytokines, antioxidant capacity, and intestinal permeability were measured. We found that the administration of WOPs augmented antioxidant defense system, accelerated hematopoietic recovery and showed the significant trend toward higher survival rate and less weight loss compared with non-administrated control mice. In addition, WOPs administration appeared to be important to limit IR-induced splenocyte apoptosis and inflammatory cascade as well as reduce intestine epithelial barrier dysfunction and promote epithelial integrity. These results suggest that pre and post-treatment of WOPs may help to ameliorate acute damage, which is induced by ionizing radiation in mice and accelerate its recovery.
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Affiliation(s)
- Na Zhu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China.
| | - Rui Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China.
| | - Li-Xia He
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China.
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA.
| | - Rui-Xue Mao
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China.
| | - Xin-Ran Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China.
| | - Ting Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China.
| | - Yun-Tao Hao
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China.
| | - Rui Fan
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China.
| | - Mei-Hong Xu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China.
| | - Yong Li
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China.
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Chakrabarti S, Guha S, Majumder K. Food-Derived Bioactive Peptides in Human Health: Challenges and Opportunities. Nutrients 2018; 10:E1738. [PMID: 30424533 PMCID: PMC6265732 DOI: 10.3390/nu10111738] [Citation(s) in RCA: 348] [Impact Index Per Article: 58.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 11/06/2018] [Accepted: 11/09/2018] [Indexed: 02/06/2023] Open
Abstract
Recent scientific evidence suggests that food proteins not only serve as nutrients, but can also modulate the body's physiological functions. These physiological functions are primarily regulated by some peptides that are encrypted in the native protein sequences. These bioactive peptides can exert health beneficial properties and thus are considered as a lead compound for the development of nutraceuticals or functional foods. In the past few decades, a wide range of food-derived bioactive peptide sequences have been identified, with multiple health beneficial activities. However, the commercial application of these bioactive peptides has been delayed because of the absence of appropriate and scalable production methods, proper exploration of the mechanisms of action, high gastro-intestinal digestibility, variable absorption rate, and the lack of well-designed clinical trials to provide the substantial evidence for potential health claims. This review article discusses the current techniques, challenges of the current bioactive peptide production techniques, the oral use and gastrointestinal bioavailability of these food-derived bioactive peptides, and the overall regulatory environment.
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Affiliation(s)
- Subhadeep Chakrabarti
- Bureau of Nutritional Sciences, Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, ON K1A 0K9, Canada.
| | - Snigdha Guha
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE 68588-6205, USA.
| | - Kaustav Majumder
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE 68588-6205, USA.
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Abstract
Current opinion strongly links nutrition and health. Among nutrients, proteins, and peptides which are encrypted in their sequences and released during digestion could play a key role in improving health. These peptides have been claimed to be active on a wide spectrum of biological functions or diseases, including blood pressure and metabolic risk factors (coagulation, obesity, lipoprotein metabolism, and peroxidation), gut and neurological functions, immunity, cancer, dental health, and mineral metabolism. A majority of studies involved dairy peptides, but the properties of vegetal, animal, and sea products were also assessed. However, these allegations are mainly based on in vitro and experimental studies which are seldom confirmed in humans. This review focused on molecules which were tested in humans, and on the mechanisms explaining discrepancies between experimental and human studies.
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Affiliation(s)
| | - Saïd Bouhallab
- b STLO, UMR1253, INRA, Agrocamus Ouest , Rennes , France
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Hvas CL, Dige A, Bendix M, Wernlund PG, Christensen LA, Dahlerup JF, Agnholt J. Casein glycomacropeptide for active distal ulcerative colitis: a randomized pilot study. Eur J Clin Invest 2016; 46:555-63. [PMID: 27090817 DOI: 10.1111/eci.12634] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 04/17/2016] [Indexed: 12/14/2022]
Abstract
BACKGROUND In ulcerative colitis (UC), dietary supplements may have anti-inflammatory properties and improve disease course. We investigated the effects of casein glycomacropeptide (CGMP), a fraction of bovine whey protein, in active UC. MATERIALS AND METHODS In a randomized open-label intervention study, 24 patients with active UC involving 10-40 cm of the distal colon were randomized in a 2 : 1 ratio into two groups. The first group was administered their usual treatment plus a daily supplement of CGMP 30 g, and the second group was administered a dose escalation to 4800 mg oral mesalamine daily (standard treatment) for 4 weeks. Clinical, endoscopic, mucosal and circulating disease activity markers were monitored. Acceptance of and adherence to CGMP up to 8 weeks were documented. RESULTS After 4 weeks of treatment, 10 of 16 (63%) patients who received CGMP had an unchanged or decreased Simple Clinical Colitis Activity Index (SCCAI), which was similar to the four of eight (50%) (P = 0·67) patients on the standard treatment. The number of patients in which SCCAI decreased by three or more did not differ between the two groups: nine of 16 (56%) in the CGMP group vs. four of eight (50%) in the standard treatment group (P = 0·77). Changes in disease extent and severity were similar between the two groups. CGMP was well tolerated and accepted by the patients. CONCLUSIONS The addition of CGMP as a nutritional therapy to standard treatment was safe and accepted by patients with active distal UC. The disease-modifying effect of CGMP was similar to that of the mesalamine dose escalation.
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Affiliation(s)
- Christian L Hvas
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus C, Denmark
| | - Anders Dige
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus C, Denmark
| | - Mia Bendix
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus C, Denmark
| | - Pernille G Wernlund
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus C, Denmark
| | - Lisbet A Christensen
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus C, Denmark
| | - Jens F Dahlerup
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus C, Denmark
| | - Jørgen Agnholt
- Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus C, Denmark
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Intestinal barrier dysfunction: implications for chronic inflammatory conditions of the bowel. Nutr Res Rev 2016; 29:40-59. [DOI: 10.1017/s0954422416000019] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
AbstractThe intestinal epithelium of adult humans acts as a differentially permeable barrier that separates the potentially harmful contents of the lumen from the underlying tissues. Any dysfunction of this boundary layer that disturbs the homeostatic equilibrium between the internal and external environments may initiate and sustain a biochemical cascade that results in inflammation of the intestine. Key to such dysfunction are genetic, microbial and other environmental factors that, singularly or in combination, result in chronic inflammation that is symptomatic of inflammatory bowel disease (IBD). The aim of the present review is to assess the scientific evidence to support the hypothesis that defective transepithelial transport mechanisms and the heightened absorption of intact antigenic proinflammatory oligopeptides are important contributing factors in the pathogenesis of IBD.
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Sawin EA, De Wolfe TJ, Aktas B, Stroup BM, Murali SG, Steele JL, Ney DM. Glycomacropeptide is a prebiotic that reduces Desulfovibrio bacteria, increases cecal short-chain fatty acids, and is anti-inflammatory in mice. Am J Physiol Gastrointest Liver Physiol 2015; 309:G590-601. [PMID: 26251473 PMCID: PMC4593820 DOI: 10.1152/ajpgi.00211.2015] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 07/31/2015] [Indexed: 01/31/2023]
Abstract
Glycomacropeptide (GMP) is a 64-amino acid (AA) glycophosphopeptide with application to the nutritional management of phenylketonuria (PKU), obesity, and inflammatory bowel disease (IBD). GMP is a putative prebiotic based on extensive glycosylation with sialic acid, galactose, and galactosamine. Our objective was to determine the prebiotic properties of GMP by characterizing cecal and fecal microbiota populations, short-chain fatty acids (SCFA), and immune responses. Weanling PKU (Pah(enu2)) and wild-type (WT) C57Bl/6 mice were fed isoenergetic AA, GMP, or casein diets for 8 wk. The cecal content and feces were collected for microbial DNA extraction to perform 16S microbiota analysis by Ion Torrent PGM sequencing. SCFA were determined by gas chromatography, plasma cytokines via a Bio-Plex Pro assay, and splenocyte T cell populations by flow cytometry. Changes in cecal and fecal microbiota are primarily diet dependent. The GMP diet resulted in a reduction from 30-35 to 7% in Proteobacteria, genera Desulfovibrio, in both WT and PKU mice with genotype-dependent changes in Bacteroidetes or Firmicutes. Cecal concentrations of the SCFA acetate, propionate, and butyrate were increased with GMP. The percentage of stimulated spleen cells producing interferon-γ (IFN-γ) was significantly reduced in mice fed GMP compared with casein. In summary, plasma concentrations of IFN-γ, TNF-α, IL-1β, and IL-2 were reduced in mice fed GMP. GMP is a prebiotic based on reduction in Desulfovibrio, increased SCFA, and lower indexes of inflammation compared with casein and AA diets in mice. Functional foods made with GMP may be beneficial in the management of PKU, obesity, and IBD.
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Affiliation(s)
- Emily A. Sawin
- 1Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin; and
| | - Travis J. De Wolfe
- 2Department of Food Science, University of Wisconsin-Madison, Madison, Wisconsin
| | - Busra Aktas
- 2Department of Food Science, University of Wisconsin-Madison, Madison, Wisconsin
| | - Bridget M. Stroup
- 1Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin; and
| | - Sangita G. Murali
- 1Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin; and
| | - James L. Steele
- 2Department of Food Science, University of Wisconsin-Madison, Madison, Wisconsin
| | - Denise M. Ney
- 1Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin; and
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Protective effect of CSN1S2 protein of goat milk on ileum microstructure and inflammation in rat-CFA-induced rheumatoid arthritis. ASIAN PACIFIC JOURNAL OF TROPICAL DISEASE 2015. [DOI: 10.1016/s2222-1808(15)60837-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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Milk proteins, peptides, and oligosaccharides: effects against the 21st century disorders. BIOMED RESEARCH INTERNATIONAL 2015; 2015:146840. [PMID: 25789308 PMCID: PMC4350585 DOI: 10.1155/2015/146840] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 12/21/2014] [Indexed: 12/17/2022]
Abstract
Milk is the most complete food for mammals, as it supplies all the energy and nutrients needed for the proper growth and development of the neonate. Milk is a source of many bioactive components, which not only help meeting the nutritional requirements of the consumers, but also play a relevant role in preventing various disorders. Milk-derived proteins and peptides have the potential to act as coadjuvants in conventional therapies, addressing cardiovascular diseases, metabolic disorders, intestinal health, and chemopreventive properties. In addition to being a source of proteins and peptides, milk contains complex oligosaccharides that possess important functions related to the newborn's development and health. Some of the health benefits attributed to milk oligosaccharides include prebiotic probifidogenic effects, antiadherence of pathogenic bacteria, and immunomodulation. This review focuses on recent findings demonstrating the biological activities of milk peptides, proteins, and oligosaccharides towards the prevention of diseases of the 21st century. Processing challenges hindering large-scale production and commercialization of those bioactive compounds have been also addressed.
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Martínez-Augustin O, Rivero-Gutiérrez B, Mascaraque C, Sánchez de Medina F. Food derived bioactive peptides and intestinal barrier function. Int J Mol Sci 2014; 15:22857-73. [PMID: 25501338 PMCID: PMC4284742 DOI: 10.3390/ijms151222857] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 11/18/2014] [Accepted: 12/02/2014] [Indexed: 12/13/2022] Open
Abstract
A wide range of food-derived bioactive peptides have been shown to exert health-promoting actions and are therefore considered functional foods or nutraceuticals. Some of these actions are related to the maintenance, reinforcement or repairment of the intestinal barrier function (IBF) whose role is to selectively allow the absorption of water, nutrients and ions while preventing the influx of microorganisms from the intestinal lumen. Alterations in the IBF have been related to many disorders, such as inflammatory bowel disease or metabolic syndrome. Components of IBF are the intestinal epithelium, the mucus layer, secretory immunoglobulin A and cells of the innate and adaptive immune systems. Here we review the effects of food derived bioactive peptides on these IBF components. In vitro and in vivo effects, both in healthy and disease states, have been reviewed. Although limited, the available information indicates a potential for food-derived peptides to modify IBF and to contribute to disease treatment, but further research is needed to better isolate responsible peptides, and to help define their mode of action.
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Affiliation(s)
- Olga Martínez-Augustin
- Department of Biochemistry and Molecular Biology 2, CIBERehd, University of Granada, Instituto de Investigación Biosanitaria ibs, Granada 18071, Spain.
| | - Belén Rivero-Gutiérrez
- Department of Pharmacology, CIBERehd, University of Granada, Instituto de Investigación Biosanitaria ibs, Granada 18071, Spain.
| | - Cristina Mascaraque
- IBD Center, Laboratory of Immunology in Gastroenterology, Humanitas Clinical and Research Center, Milan 20089, Italy.
| | - Fermín Sánchez de Medina
- Department of Pharmacology, CIBERehd, University of Granada, Instituto de Investigación Biosanitaria ibs, Granada 18071, Spain.
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Hernández-Ledesma B, García-Nebot MJ, Fernández-Tomé S, Amigo L, Recio I. Dairy protein hydrolysates: Peptides for health benefits. Int Dairy J 2014. [DOI: 10.1016/j.idairyj.2013.11.004] [Citation(s) in RCA: 139] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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18
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Forster R, Bourtourault M, Chung YJ, Silvano J, Sire G, Spezia F, Puel C, Descotes J, Mikogami T. Safety evaluation of a whey protein fraction containing a concentrated amount of naturally occurring TGF-β2. Regul Toxicol Pharmacol 2014; 69:398-407. [DOI: 10.1016/j.yrtph.2014.05.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 05/06/2014] [Accepted: 05/10/2014] [Indexed: 02/07/2023]
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Wada Y, Lönnerdal B. Bioactive peptides derived from human milk proteins — mechanisms of action. J Nutr Biochem 2014; 25:503-14. [DOI: 10.1016/j.jnutbio.2013.10.012] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 10/03/2013] [Accepted: 10/23/2013] [Indexed: 01/14/2023]
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20
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Capitán-Cañadas F, Ortega-González M, Guadix E, Zarzuelo A, Suárez MD, de Medina FS, Martínez-Augustin O. Prebiotic oligosaccharides directly modulate proinflammatory cytokine production in monocytes via activation of TLR4. Mol Nutr Food Res 2013; 58:1098-110. [PMID: 24549946 DOI: 10.1002/mnfr.201300497] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 09/10/2013] [Accepted: 10/12/2013] [Indexed: 11/06/2022]
Abstract
SCOPE Prebiotic oligosaccharides are currently used in a variety of clinical settings for their effects on intestinal microbiota. Here, we have examined the direct, microbiota independent, effects of prebiotics on monocytes and T lymphocytes in vitro. METHODS AND RESULTS Prebiotics generally evoked cytokine secretion (TNF-α, IL-6, and IL-10) by mouse splenocytes but inhibited LPS -induced IFN-γ and IL-17 release. Inulin was found to enhance LPS-induced IL-10 secretion. Splenocytes from TLR4(-/-) (where TLR is Toll-like receptor) mice showed a markedly depressed response. Conversely, in both basal and LPS-stimulated conditions, prebiotic inhibition of IFN-γ levels was preserved. These results suggested a predominant effect on monocytes via TLR4 ligation and possible inhibition of T cells. Hence, we studied the modulation of primary rat monocytes and T lymphocytes, focusing on fructooligosaccharides (FOS) and inulin. In monocytes, FOS and inulin induced TNF-α, growth-regulated oncogene α, and IL-10, but not IL-1β release. The NF-κB inhibitor Bay 11-7082 fully prevented these effects. Pharmacological evidence also indicated a significant involvement of mitogen-activated protein kinase and phosphatidylinositol-3-kinase. There was little effect on T cells. FOS and inulin also generally increased TNF-α, IL-1β, and IL-10, but not IL-8, in human peripheral blood monocytes. CONCLUSION We conclude that prebiotics may act as TLR4 ligands or as indirect TLR4 modulators to upregulate cytokine secretion in monocytes.
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Affiliation(s)
- Fermín Capitán-Cañadas
- Department of Biochemistry and Molecular Biology II, CIBERehd, School of Pharmacy, University of Granada, Granada, Spain
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Marín M, María Giner R, Ríos JL, Recio MC. Intestinal anti-inflammatory activity of ellagic acid in the acute and chronic dextrane sulfate sodium models of mice colitis. JOURNAL OF ETHNOPHARMACOLOGY 2013; 150:925-934. [PMID: 24140585 DOI: 10.1016/j.jep.2013.09.030] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 07/15/2013] [Accepted: 09/10/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Pomegranate (Punica granatum L.; Lythraceae) has traditionally been used for the treatment of various inflammatory diseases, including ulcerative colitis (UC). Because its fruits and extracts are rich in ellagitannins, which release ellagic acid when hydrolyzed, consumption of pomegranate products is currently being widely promoted for their potential health effects, including the prevention of inflammatory diseases and cancer. To evaluate the anti-inflammatory effects of ellagic acid on dextran sulfate sodium (DSS)-induced acute and chronic experimental colitis in two different strains of mice and to elucidate its possible mechanisms of action. MATERIALS AND METHODS In the acute UC model, female Balb/C mice were treated with DSS (5%) for seven days while concomitantly receiving a dietary supplement of ellagic acid (2%). In the chronic UC model, female C57BL/6 mice received four week-long cycles of DSS (1% and 2%) interspersed with week-long recovery periods along with a diet supplemented with ellagic acid (0.5%). RESULTS In acute model of UC, ellagic acid ameliorated disease severity slightly as observed both macroscopically and through the profile of inflammatory mediators (IL-6, TNF-α, and IFN-γ). In the chronic UC model, ellagic acid significantly inhibited the progression of the disease, reducing intestinal inflammation and decreasing histological scores. Moreover, mediators such as COX-2 and iNOS were downregulated and the signaling pathways p38 MAPK, NF-κB, and STAT3 were blocked. CONCLUSIONS Our study reinforces the hypothetical use of ellagic acid as an anti-inflammatory complement to conventional UC treatment in chronic UC patients and could be considered in the dietary prevention of intestinal inflammation and related cancer development.
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Affiliation(s)
- Marta Marín
- Department of Pharmacology, Faculty of Pharmacy, University of Valencia Avda./Vicent Andrés Estellés sn, 46100 Burjassot-Valencia, Spain
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22
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Validation of bovine glycomacropeptide as an intestinal anti-inflammatory nutraceutical in the lymphocyte-transfer model of colitis. Br J Nutr 2013; 111:1202-12. [PMID: 24229852 DOI: 10.1017/s0007114513003590] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Milk κ-casein-derived bovine glycomacropeptide (GMP) exerts immunomodulatory effects. It exhibits intestinal anti-inflammatory activity in chemically induced models of colitis. However, to validate its clinical usefulness as a nutraceutical, it is important to assess its effects in a model with a closer pathophysiological connection with human inflammatory bowel disease. Therefore, in the present study, we used the lymphocyte-transfer model of colitis in mice and compared the effects of GMP in this model with those obtained in the dextran sulphate sodium (DSS) model. GMP (15 mg/d) resulted in higher body-weight gain and a reduction of the colonic damage score and myeloperoxidase (MPO) activity in Rag1(-/-) mice with colitis induced by the transfer of naïve T cells. The colonic and ileal weight:length ratio was decreased by approximately 25%, albeit non-significantly. GMP treatment reduced the percentage of CD4⁺ interferon (IFN)-γ⁺ cells in mesenteric lymph nodes (MLN). The basal production of IL-6 by MLN obtained from the GMP-treated mice ex vivo was augmented. However, concanavalin A-evoked production was similar. The colonic expression of regenerating islet-derived protein 3γ, S100A8, chemokine (C-X-C motif) ligand 1 and IL-1β was unaffected by GMP, while that of TNF-α and especially IFN-γ was paradoxically increased. In the DSS model, GMP also reduced the activity of colonic MPO, but it failed to alter weight gain or intestinal weight:length ratio. GMP augmented the production of IL-10 by MLN cells and was neutral towards other cytokines, except exhibiting a trend towards increasing the production of IL-6. The lower effect was attributed to the lack of the effect of GMP on epithelial cells. In conclusion, GMP exerts intestinal anti-inflammatory effects in lymphocyte-driven colitis.
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Grimstad T, Bjørndal B, Cacabelos D, Aasprong OG, Omdal R, Svardal A, Bohov P, Pamplona R, Portero-Otin M, Berge RK, Hausken T. A salmon peptide diet alleviates experimental colitis as compared with fish oil. J Nutr Sci 2013; 2:e2. [PMID: 25191568 PMCID: PMC4153328 DOI: 10.1017/jns.2012.23] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 08/31/2012] [Accepted: 10/16/2012] [Indexed: 12/11/2022] Open
Abstract
Fish oil (FO) has been shown to have anti-inflammatory properties in animal models of inflammatory bowel disease, but how fish peptides (FP) influence intestinal inflammation has been less studied. Male Wistar rats, divided into five groups, were included in a 4-week dietary intervention study. Of the groups, four were exposed in the fourth week to 5 % dextran sulfate sodium (DSS) to induce colitis, while one group was unexposed. The diets were: (1) control, (2) control + DSS, (3) FO (5 %) + DSS, (4) FP (3·5 %) + DSS, (5) FO + FP + DSS. Following DSS intake, weight and disease activity index (DAI) were assessed, and histological combined score (HCS), selected colonic PG, cytokines, oxidative damage markers and mRNA levels were measured. FP reduced HCS, tended to lower DAI (P = 0·07) and reduced keratinocyte chemoattractant/growth-regulated oncogene levels, as compared with the FO diet. FP also reduced mRNA levels of Il-6 and Cxcl1, although not significantly. FO intake increased the DAI as compared with DSS alone. PGE3 levels increased after the FO diet, and even more following FO + FP intake. The FP diet seems to have a protective effect in DSS-induced colitis as compared with FO. A number of beneficial, but non-significant, changes also occurred after FP v. DSS. A combined FO + FP diet may influence PG synthesis, as PGE3 levels were higher after the combined diet than after FO alone.
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Affiliation(s)
- Tore Grimstad
- Division of Gastroenterology, Department of
Medicine, Stavanger University Hospital,
Stavanger, Norway
- Institute of Medicine, University of
Bergen, Bergen, Norway
| | - Bodil Bjørndal
- Section of Clinical Biochemistry, Haukeland
University Hospital, Bergen,
Norway
| | - Daniel Cacabelos
- Department of Experimental Medicine,
University of Lleida (IRB Lleida),
Lleida, Spain
| | - Ole G. Aasprong
- Department of Pathology,
Stavanger University Hospital,
Stavanger, Norway
| | - Roald Omdal
- Institute of Medicine, University of
Bergen, Bergen, Norway
- Department of Medicine,
Stavanger University Hospital,
Stavanger, Norway
| | | | - Pavol Bohov
- Section of Clinical Biochemistry, Haukeland
University Hospital, Bergen,
Norway
| | - Reinald Pamplona
- Department of Experimental Medicine,
University of Lleida (IRB Lleida),
Lleida, Spain
| | - Manuel Portero-Otin
- Department of Experimental Medicine,
University of Lleida (IRB Lleida),
Lleida, Spain
| | - Rolf K. Berge
- Section of Clinical Biochemistry, Haukeland
University Hospital, Bergen,
Norway
- Department of Heart Diseases,
Haukeland University Hospital, Bergen,
Norway
| | - Trygve Hausken
- Institute of Medicine, University of
Bergen, Bergen, Norway
- Division of Gastroenterology, Department of
Medicine, Haukeland University Hospital,
Bergen, Norway
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Abstract
In addition to supplying essential nutrients, some food proteins can confer additional health benefits beyond nutrition. The presence of bioactive proteins and peptides in different foods is a factor not currently taken into consideration when assessing the dietary quality of food proteins. The range of described physiological benefits attributed to bioactive proteins and peptides is diverse. Multiple factors can potentially impact on the ability of a bioactive peptide or protein to elicit an effect. Although some food proteins act directly in their intact form to elicit their effects, generally it is peptides derived from digestion, hydrolysis or fermentation that are of most interest. The levels of bioactive peptides generated must be sufficient to elicit a response, but should not be so high as to be unsafe, thus causing negative effects. In addition, some peptides cause systemic effects and therefore must be absorbed, again in sufficient amounts to elicit their action. Many studies to date have been carried out in vitro; therefore it is important that further trials are conducted in vivo to assess efficacy, dose response and safety of the peptides, particularly if health related claims are to be made. Therefore, methods must be developed and standardised that enable the measurement of health benefits and also the level of bioactive peptides which are absorbed into the bloodstream. Once standardised, such methods may provide a new perspective and an additional mechanism for analysing protein quality which is currently not encompassed by the use of the protein digestibility-corrected amino acid score (PDCAAS).
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25
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Philippe D, Brahmbhatt V, Foata F, Saudan Y, Serrant P, Blum S, Benyacoub J, Vidal K. Anti-inflammatory effects of Lacto-Wolfberry in a mouse model of experimental colitis. World J Gastroenterol 2012; 18:5351-9. [PMID: 23082051 PMCID: PMC3471103 DOI: 10.3748/wjg.v18.i38.5351] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Revised: 07/10/2012] [Accepted: 07/18/2012] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the anti-inflammatory properties of Lacto-Wolfberry (LWB), both in vitro and using a mouse model of experimental colitis.
METHODS: The effects of LWB on lipopolysaccharide (LPS)-induced reactive oxygen species (ROS) and interleukin (IL)-6 secretion were assessed in a murine macrophage cell line. in vitro assessment also included characterizing the effects of LWB on the activation of NF-E2 related 2 pathway and inhibition of tumor necrosis factor-α (TNF-α)-induced nuclear factor-κB (NF-κB) activation, utilizing reporter cell lines. Following the in vitro assessment, the anti-inflammatory efficacy of an oral intervention with LWB was tested in vivo using a preclinical model of intestinal inflammation. Multiple outcomes including body weight, intestinal histology, colonic cytokine levels and anti-oxidative measures were investigated.
RESULTS: LWB reduced the LPS-mediated induction of ROS production [+LPS vs 1% LWB + LPS, 1590 ± 188.5 relative luminescence units (RLU) vs 389 ± 5.9 RLU, P < 0.001]. LWB was more effective than wolfberry alone in reducing LPS-induced IL-6 secretion in vitro (wolfberry vs 0.5% LWB, 15% ± 7.8% vs 64% ± 5%, P < 0.001). In addition, LWB increased reporter gene expression via the anti-oxidant response element activation (wolfberry vs LWB, 73% ± 6.9% vs 148% ± 28.3%, P < 0.001) and inhibited the TNF-α-induced activation of the NF-κB pathway (milk vs LWB, 10% ± 6.7% vs 35% ± 3.3%, P < 0.05). Furthermore, oral supplementation with LWB resulted in a reduction of macroscopic (-LWB vs +LWB, 5.39 ± 0.61 vs 3.66 ± 0.59, P = 0.0445) and histological scores (-LWB vs +LWB, 5.44 ± 0.32 vs 3.66 ± 0.59, P = 0.0087) in colitic mice. These effects were associated with a significant decrease in levels of inflammatory cytokines such as IL-1β (-LWB vs +LWB, 570 ± 245 μg/L vs 89 ± 38 μg/L, P = 0.0106), keratinocyte-derived chemokine/growth regulated protein-α (-LWB vs +LWB, 184 ± 49 μg/L vs 75 ± 20 μg/L, P = 0.0244), IL-6 (-LWB vs +LWB, 318 ± 99 μg/L vs 117 ± 18 μg/L, P = 0.0315) and other pro-inflammatory proteins such as cyclooxygenase-2 (-LWB vs +LWB, 0.95 ± 0.12 AU vs 0.36 ± 0.11 AU, P = 0.0036) and phosphorylated signal transducer and activator of transcription-3 (-LWB vs +LWB, 0.51 ± 0.15 AU vs 0.1 ± 0.04 AU, P = 0.057). Moreover, antioxidant biomarkers, including expression of gene encoding for the glutathione peroxidase, in the colon and the plasma anti-oxidant capacity were significantly increased by supplementation with LWB (-LWB vs +LWB, 1.2 ± 0.21 mmol/L vs 2.1 ± 0.19 mmol/L, P = 0.0095).
CONCLUSION: These results demonstrate the anti-inflammatory properties of LWB and suggest that the underlying mechanism is at least in part due to NF-κB inhibition and improved anti-oxidative capacity.
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Espinoza-Castañeda M, de la Escosura-Muñiz A, González-Ortiz G, Martín-Orúe SM, Pérez JF, Merkoçi A. Casein modified gold nanoparticles for future theranostic applications. Biosens Bioelectron 2012; 40:271-6. [PMID: 22884001 DOI: 10.1016/j.bios.2012.07.042] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2012] [Revised: 07/03/2012] [Accepted: 07/21/2012] [Indexed: 12/20/2022]
Abstract
The synthesis and characterization of gold nanoparticles (AuNPs 20 nm sized) modified with k-casein derived peptides in order to monitor the peptide effect as bacterial adhesion inhibitor, thanks to the carrier/concentrator effect of the AuNPs is here presented. Some aspects related to the stability of AuNP/peptide conjugates for a potential application in the design of an electrochemical biosensor for pathogen bacteria detection are also discussed. This peptide based nanoparticle assay takes advantage of the dual character of the AuNPs: as carrier of the biorecognition molecule and also as electrocatalytic label, allowing the evaluation of the pathogen bacteria-peptide interaction in a simple and rapid way through the chronoamperometric monitoring of the hydrogen evolution reaction on screen-printed carbon electrodes. The developed proof of concept theranostic system may open the way to therapeutic and biosensing applications with interest for various fields.
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Affiliation(s)
- Marisol Espinoza-Castañeda
- Nanobioelectronics & Biosensors Group, CIN2 (ICN-CSIC), Catalan Institute of Nanotechnology, Campus UAB, Bellaterra (Barcelona), Spain
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