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Song C, Zhong R, Zeng S, Chen Z, Tan M, Zheng H, Gao J, Lin H, Zhu G, Cao W. Effect of baking on the structure and bioavailability of protein-binding zinc from oyster (Crassoetrea hongkongensis). Food Chem 2024; 451:139471. [PMID: 38692241 DOI: 10.1016/j.foodchem.2024.139471] [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: 01/25/2024] [Revised: 03/20/2024] [Accepted: 04/22/2024] [Indexed: 05/03/2024]
Abstract
To compare the bioavailability of protein-binding zinc, we investigated the impact of baking on the structure of zinc-binding proteins. The results showed that zinc-binding proteins enriched in zinc with relative molecular weights distributed at 6 kDa and 3 kDa. Protein-binding zinc is predisposed to separate from proteins' interiors and converge on proteins' surface after being baked, and its structure tends to be crystalline. Especially -COO, -C-O, and -C-N played vital roles in the sites of zinc-binding proteins. However, baking did not affect protein-binding zinc's bioavailability which was superior to that of ZnSO4 and C12H22O14Zn. They were digested in the intestine, zinc-binding complexes that were easily transported and uptaken by Caco-2 cells, with transport and uptake rates as high as 62.15% and 15.85%. Consequently, baking can alter the conformation of zinc-binding proteins without any impact on protein-binding zinc's bioavailability which is superior to that of ZnSO4 and C12H22O14Zn.
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Affiliation(s)
- Chunyong Song
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China
| | - Runfang Zhong
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China
| | - Shan Zeng
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China
| | - Zhongqin Chen
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China.; National Research and Development Branch Center for Shellfish Processing (Zhanjiang), Zhanjiang 524088, China.; Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Zhanjiang 524088, China.; Shenzhen Institute of Guangdong Ocean University, Shenzhen 518108, China
| | - Mingtang Tan
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China.; National Research and Development Branch Center for Shellfish Processing (Zhanjiang), Zhanjiang 524088, China.; Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Zhanjiang 524088, China.; Shenzhen Institute of Guangdong Ocean University, Shenzhen 518108, China
| | - Huina Zheng
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China.; National Research and Development Branch Center for Shellfish Processing (Zhanjiang), Zhanjiang 524088, China.; Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Zhanjiang 524088, China.; Shenzhen Institute of Guangdong Ocean University, Shenzhen 518108, China
| | - Jialong Gao
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China.; National Research and Development Branch Center for Shellfish Processing (Zhanjiang), Zhanjiang 524088, China.; Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Zhanjiang 524088, China.; Shenzhen Institute of Guangdong Ocean University, Shenzhen 518108, China
| | - Haisheng Lin
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China.; National Research and Development Branch Center for Shellfish Processing (Zhanjiang), Zhanjiang 524088, China.; Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Zhanjiang 524088, China.; Shenzhen Institute of Guangdong Ocean University, Shenzhen 518108, China
| | - Guoping Zhu
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China.; National Research and Development Branch Center for Shellfish Processing (Zhanjiang), Zhanjiang 524088, China.; Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Zhanjiang 524088, China.; Shenzhen Institute of Guangdong Ocean University, Shenzhen 518108, China
| | - Wenhong Cao
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China.; National Research and Development Branch Center for Shellfish Processing (Zhanjiang), Zhanjiang 524088, China.; Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, Guangdong Provincial Engineering Technology Research Center of Seafood, Zhanjiang 524088, China.; Shenzhen Institute of Guangdong Ocean University, Shenzhen 518108, China..
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Chen X, Huang M, Liu D, Li Y, Luo Q, Pham K, Wang M, Zhang J, Zhang R, Peng Z, Wu X. Absorption and Transport Characteristics and Mechanisms of Carnosic Acid. BIOLOGY 2021; 10:biology10121278. [PMID: 34943193 PMCID: PMC8698657 DOI: 10.3390/biology10121278] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/03/2021] [Accepted: 12/03/2021] [Indexed: 01/08/2023]
Abstract
Simple Summary Carnosic acid (CA), a phenolic diterpenoid mainly found in rosemary and sage, has been reported to possess various health-beneficial activities. However, detailed information about the absorption characteristics and mechanisms of CA and its tissue distribution still remains unclear. It has been well-recognized that the absorption, transport, and metabolism of dietary bioactive compounds are closely related to their biological functions. Herein, a mouse study and Caco-2 cell monolayer model of the intestinal epithelial barrier were used to understand the absorption and transport characteristics of CA. First, we determined the tissue distribution of CA in mice following oral gavage at a physiologically relevant dose. We found that CA was bioavailable systemically and present locally in the digestive tract, especially in the cecum and colon. Next, in Caco-2 cell monolayers, CA exhibited a moderate permeability and was subjected to mild efflux. Moreover, the apparent permeability coefficient of CA transported across Caco-2 cell monolayers was significantly changed when the inhibitors of specific active transporter and passive diffusion were added, suggesting that the absorption and transport of CA involved both passive and active transportation. The present study is an important first step towards understanding the absorption, transport, and metabolic mechanisms of CA. Abstract Carnosic acid (CA) is a phenolic diterpenoid mainly found in rosemary and sage. CA has been reported to possess health-beneficial effects in various experimental settings. Herein, a mouse experiment and Caco-2 single-cell model were used to understand the absorption and transport characteristics of CA. First, we determined the tissue distribution of CA in mice, following an oral gavage at a physiologically relevant dose. We found that CA was bioavailable systemically and present locally in the digestive tract, especially in the cecum and colon. Next, we thought to characterize the absorption and transport of CA in the Caco-2 cell monolayer model of the intestinal epithelial barrier. In the Caco-2 cell model, CA exhibited a moderate permeability and was subjected to a mild efflux. Moreover, the apparent permeability coefficient (Papp) of CA transported across Caco-2 cell monolayers was significantly changed when the inhibitors of specific active transporter and passive diffusion were added to cells, suggesting that the absorption and transport of CA involved both passive and active transportation. The present study is an important first step towards understanding the absorption, transport, and metabolic mechanisms of CA. This could provide the scientific basis for developing CA-containing functional foods or dietary supplements with improved bioavailability.
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Affiliation(s)
- Xuexiang Chen
- School of Public Health, Guangzhou Medical University, Guangzhou 510642, China; (D.L.); (Y.L.); (Q.L.); (M.W.); (J.Z.); (R.Z.); (Z.P.)
- Correspondence: (X.C.); (X.W.)
| | - Meigui Huang
- Department of Food Science and Engineering, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China;
| | - Dongmei Liu
- School of Public Health, Guangzhou Medical University, Guangzhou 510642, China; (D.L.); (Y.L.); (Q.L.); (M.W.); (J.Z.); (R.Z.); (Z.P.)
| | - Yongze Li
- School of Public Health, Guangzhou Medical University, Guangzhou 510642, China; (D.L.); (Y.L.); (Q.L.); (M.W.); (J.Z.); (R.Z.); (Z.P.)
| | - Qiu Luo
- School of Public Health, Guangzhou Medical University, Guangzhou 510642, China; (D.L.); (Y.L.); (Q.L.); (M.W.); (J.Z.); (R.Z.); (Z.P.)
| | - Katherine Pham
- Department of Kinesiology, Nutrition, and Health, Miami University, Oxford, OH 45056, USA;
| | - Minghong Wang
- School of Public Health, Guangzhou Medical University, Guangzhou 510642, China; (D.L.); (Y.L.); (Q.L.); (M.W.); (J.Z.); (R.Z.); (Z.P.)
| | - Jing Zhang
- School of Public Health, Guangzhou Medical University, Guangzhou 510642, China; (D.L.); (Y.L.); (Q.L.); (M.W.); (J.Z.); (R.Z.); (Z.P.)
| | - Runbin Zhang
- School of Public Health, Guangzhou Medical University, Guangzhou 510642, China; (D.L.); (Y.L.); (Q.L.); (M.W.); (J.Z.); (R.Z.); (Z.P.)
| | - Zhixi Peng
- School of Public Health, Guangzhou Medical University, Guangzhou 510642, China; (D.L.); (Y.L.); (Q.L.); (M.W.); (J.Z.); (R.Z.); (Z.P.)
| | - Xian Wu
- Department of Kinesiology, Nutrition, and Health, Miami University, Oxford, OH 45056, USA;
- Correspondence: (X.C.); (X.W.)
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Sjögren E, Abrahamsson B, Augustijns P, Becker D, Bolger MB, Brewster M, Brouwers J, Flanagan T, Harwood M, Heinen C, Holm R, Juretschke HP, Kubbinga M, Lindahl A, Lukacova V, Münster U, Neuhoff S, Nguyen MA, Peer AV, Reppas C, Hodjegan AR, Tannergren C, Weitschies W, Wilson C, Zane P, Lennernäs H, Langguth P. In vivo methods for drug absorption – Comparative physiologies, model selection, correlations with in vitro methods (IVIVC), and applications for formulation/API/excipient characterization including food effects. Eur J Pharm Sci 2014; 57:99-151. [DOI: 10.1016/j.ejps.2014.02.010] [Citation(s) in RCA: 196] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 02/15/2014] [Accepted: 02/17/2014] [Indexed: 01/11/2023]
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Petecchia L, Sabatini F, Usai C, Caci E, Varesio L, Rossi GA. Cytokines induce tight junction disassembly in airway cells via an EGFR-dependent MAPK/ERK1/2-pathway. J Transl Med 2012; 92:1140-8. [PMID: 22584669 DOI: 10.1038/labinvest.2012.67] [Citation(s) in RCA: 114] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Epithelial barrier permeability is altered in inflammatory respiratory disorders by a variety of noxious agents through modifications of the epithelial cell structure that possibly involve tight junction (TJ) organization. To evaluate in vitro whether pro-inflammatory cytokines involved in the pathogenesis of respiratory disorders could alter TJ organization and epithelial barrier integrity, and to characterize the signal transduction pathway involved Calu-3 airway epithelial cells were exposed to TNF-a, IL-4 and IFN-g to assess changes in: (a) TJ assembly, that is, occludin and zonula occludens (ZO)-1 expression and localization, evaluated by confocal microscopy; (b) apoptotic activity, quantified using terminal transferase deoxyuridine triphosphate nick-end labeling staining; (c) epithelial barrier integrity, detected as transmembrane electrical resistance and expressed as G(T) values; (d) epidermal growth factor receptor (EGFR)-dependent mitogenactivated protein (MAP) kinase (MAPK)/extracellular signal-regulated kinases (ERK)1/2 phosphorylation, assessed by western blotting. Exposure to cytokines for 48 h induced a noticeable downregulation of the TJ transmembrane proteins. The degree ZO-1 and occludin colocalization was 62±2% in control cultures and significantly decreased in the presence of TNF-a (47±3%), IL-4 (43±1%) and INF-g (35±3%). Although no apoptosis induction was detected following exposure to cytokines, changes in the epithelial barrier integrity were observed, with a significant enhancement in paracellular conductance. G(T) values were, respectively, 1.030±0.0, 1.300±0.04, 1.260±0.020 and 2.220±0.015 (mS/cm²)1000 in control cultures and in those exposed to TNF-a, IFN-g and IL-4. The involvement of EGFR-dependent MAPK/ERK1/2 signaling pathway in cytokine-induced damage was demonstrated by a significant increase in threonine/tyrosine phosphorylation of ERK1/2, already detectable after 5 min incubation. All these cytokine-induced changes were markedly prevented when Calu-3 cells were cultured in the presence of an EGFR inhibitor (AG1478, 1 μM) or a MAP kinase inhibitor (U0126, 25 μM). In conclusion, cytokine-induced epithelial injury includes TJ disassembly and epithelial barrier permeability alteration and involves the EGFR-dependent MAPK/ERK1/2 signaling pathway.
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