1
|
Peesapati S, Roy D. Structural and spectroscopic details of polysaccharide-bile acid composites from molecular dynamics simulations. J Biomol Struct Dyn 2023; 41:8782-8794. [PMID: 36310090 DOI: 10.1080/07391102.2022.2137242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 10/11/2022] [Indexed: 10/31/2022]
Abstract
Interactions of a prototypical bile acid (cholic acid, 'Ch') and its corresponding sodium salt (sodium cholate, 'NaCh') with a standard dietary β-glucan (β-G), bearing β-D-glucopyranose units having mixed 1-4/1-3 glycosidic linkages are studied using molecular dynamics simulation and density functional theory (DFT) calculations. Self-aggregation of the biliary components and their interaction with fifteen strands of the decameric mixed linkage β-glucan is elucidated by estimating varieties of physical properties like the coordination number, moment of inertia and shape anisotropy of the biggest cluster formed at different time instants. Small angle scattering profiles indicate formation of compact spheroidal aggregates. The simulated results of small angle scattering and 1H NMR chemical shifts are compared to spectroscopic data, wherever available. Density functional theory calculations and estimation of the 1H NMR chemical shifts of Ch-protons lying close to the β-G chains reveal change in chemical shift values from that in absence of the polysaccharide. Hydrogen bonding and non-bonding interactions, primarily short range van der Waals interactions and some extent of inter-molecular charge transfer are found to play significant role in stabilizing the complex soft assemblies of bile acid aggregates and β-G.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Sruthi Peesapati
- Department of Chemistry, Birla Institute of Technology and Science-Pilani, Hyderabad, India
| | - Durba Roy
- Department of Chemistry, Birla Institute of Technology and Science-Pilani, Hyderabad, India
| |
Collapse
|
2
|
Wu X, Boulos S, Syryamina V, Nyström L, Yulikov M. Interaction of barley β-glucan with food dye molecules - An insight from pulse dipolar EPR spectroscopy. Carbohydr Polym 2023; 309:120698. [PMID: 36906364 DOI: 10.1016/j.carbpol.2023.120698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/25/2023] [Accepted: 02/10/2023] [Indexed: 02/16/2023]
Abstract
The interactions between dietary fibers (DFs) and small molecules are of great interest to food chemistry and nutrition science. However, the corresponding interaction mechanisms and structural rearrangements of DFs at the molecular level are still opaque due to the usually weak binding and the lack of appropriate techniques to determine details of conformational distributions in such weakly organized systems. By combining our previously established methodology on stochastic spin-labelling of DFs with the appropriately revised set of pulse electron paramagnetic resonance techniques, we present here a toolkit to determine the interactions between DFs and small molecules, using barley β-glucan as an example for neutral DF and a selection of food dye molecules as examples for small molecules. The proposed here methodology allowed us to observe subtle conformational changes of β-glucan by detecting multiple details of the local environment of the spin labels. Substantial variations of binding propensities were detected for different food dyes.
Collapse
Affiliation(s)
- Xiaowen Wu
- Department of Health Sciences and Technology, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland.
| | - Samy Boulos
- Department of Health Sciences and Technology, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland.
| | - Victoria Syryamina
- Department of Health Sciences and Technology, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland; Voevodsky Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk, Russia.
| | - Laura Nyström
- Department of Health Sciences and Technology, Institute of Food, Nutrition and Health, ETH Zurich, 8092 Zurich, Switzerland.
| | - Maxim Yulikov
- Laboratory of Physical Chemistry, ETH Zürich, Wolfgang-Pauli-Str. 10, 8093 Zürich, Switzerland.
| |
Collapse
|
3
|
Pigliacelli C, Belton P, Wilde P, Bombelli FB, Kroon PA, Winterbone MS, Qi S. Interaction of polymers with bile salts - Impact on solubilisation and absorption of poorly water-soluble drugs. Colloids Surf B Biointerfaces 2023; 222:113044. [PMID: 36436403 DOI: 10.1016/j.colsurfb.2022.113044] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 11/01/2022] [Accepted: 11/18/2022] [Indexed: 11/21/2022]
Abstract
Formulating poorly soluble drugs with polymers in the form of solid dispersions has been widely used for improving drug dissolution. Endogenous surface-active species present in the gut, such as bile salts, lecithin and other phospholipids, have been shown to play a key role in facilitating lipids and poorly soluble drugs solubilisation in the gut. In this study, we examined the possible occurrence of interactions between a model bile salt, sodium taurocholate (NaTC), and model spray dried solid dispersions comprising piroxicam and Hydroxypropyl Methylcellulose (HPMC), a commonly used hydrophilic polymer for solid dispersion preparation. Solubility measurements revealed the good solubilisation effect of NaTC on the crystalline drug, which was enhanced by the addition of HPMC, and further boosted by the drug formulation into solid dispersion. The colloidal behaviour of the solid dispersions upon dissolution in biorelevant media, with and without NaTC, revealed the formation of NaTC-HPMC complexes and other mixed colloidal species. Cellular level drug absorption studies obtained using Caco-2 monolayers confirmed that the combination of drug being delivered by solid dispersion and the presence of bile salt and lecithin significantly contributed to the improved drug absorption. Together with the role of NaTC-HPMC complexes in assisting the drug solubilisation, our results also highlight the complex interplay between bile salts, excipients and drug absorption.
Collapse
Affiliation(s)
- Claudia Pigliacelli
- School of Pharmacy, University of East Anglia, Norwich, Norfolk NR4 7TJ, UK; Dipartimento di Chimica, Materiali ed Ingegneria Chimica "G. Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milan, Italy.
| | - Peter Belton
- School of Chemistry, University of East Anglia, Norwich, Norfolk NR4 7TJ, UK
| | - Peter Wilde
- Quadram Institute Bioscience, Norwich Research Park, Norwich, Norfolk NR4 7UQ, UK
| | - Francesca Baldelli Bombelli
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica "G. Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milan, Italy
| | - Paul A Kroon
- Quadram Institute Bioscience, Norwich Research Park, Norwich, Norfolk NR4 7UQ, UK
| | - Mark S Winterbone
- Quadram Institute Bioscience, Norwich Research Park, Norwich, Norfolk NR4 7UQ, UK
| | - Sheng Qi
- School of Pharmacy, University of East Anglia, Norwich, Norfolk NR4 7TJ, UK.
| |
Collapse
|
4
|
Hazra R, Roy D. Monosaccharide induced temporal delay in cholesterol self-aggregation. J Biomol Struct Dyn 2022; 41:3205-3217. [PMID: 35254222 DOI: 10.1080/07391102.2022.2048076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Self-assembly of cholesterol (CHL) is infamous for its diverse deleterious effects on human health. Clinical research over several decades indicates that a diet rich in CHL typically leads to arterial plaques, cataracts and gall stones among others. Carbohydrates like the β-glucans efficiently lower serum CHL, possibly by inhibiting CHL absorption in the digestive tract. Using molecular dynamics simulations, we explore how β-D-glucose (BGLC), the building block of β-glucans, interferes with CHL aggregation. BGLC slows down CHL diffusion and disrupts the formation of the robust hydrophobic CHL assembly. Estimation of the translational entropy of the CHL molecules shows the extent of retardation induced by BGLC. Coordination numbers obtained from the adjacency matrix and collective variable analysis of the packing of the CHL molecules in presence of BGLC show the time evolution of CHL aggregation. In presence of BGLC, small isolated CHL islands form, consolidate and disintegrate over time as compared to the blank CHL system. The predominance of smaller CHL clusters is an effect of the significant retardation of the translational motion of CHL molecules induced by BGLC.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Rituparna Hazra
- Department of Chemistry, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad, Telangana, India
| | - Durba Roy
- Department of Chemistry, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad, Telangana, India
| |
Collapse
|
5
|
β-glucan release from fungal and plant cell walls after simulated gastrointestinal digestion. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104543] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
6
|
Mäkelä N, Rosa-Sibakov N, Wang YJ, Mattila O, Nordlund E, Sontag-Strohm T. Role of β-glucan content, molecular weight and phytate in the bile acid binding of oat β-glucan. Food Chem 2021; 358:129917. [PMID: 33933973 DOI: 10.1016/j.foodchem.2021.129917] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 04/12/2021] [Accepted: 04/17/2021] [Indexed: 11/26/2022]
Abstract
There is controversy about the role of viscosity and co-migrating molecules on the bile acid binding of beta-glucan. Thus, this study aimed to investigate the impact of β-glucan molecular weight and the content of both β-glucan and phytate on the mobility of bile acids by modelling intestinal conditions in vitro. Two approaches were used to evaluate factors underlying this binding effect. The first studied bile acid binding capacity of soluble β-glucan using purified compounds. Viscosity of the β-glucan solution governed mainly the mobility of bile acid since both a decrease in β-glucan concentration and degradation of β-glucan by enzyme hydrolysis resulted in decreased binding. The second approach investigated the trapping of bile acids in the oat bran matrix. Results suggested trapping of bile acids by the β-glucan gel network. Additionally, hydrolysis of phytate was shown to increase bile acid binding, probably due to better extractability of β-glucan in this sample.
Collapse
Affiliation(s)
- Noora Mäkelä
- Department of Food and Nutrition, University of Helsinki, P.O. Box 66, 00014 Helsinki, Finland.
| | - Natalia Rosa-Sibakov
- VTT Technical Research Centre of Finland Ltd, P.O. Box 1000, FI-02044 VTT, Finland.
| | - Yu-Jie Wang
- Department of Food and Nutrition, University of Helsinki, P.O. Box 66, 00014 Helsinki, Finland
| | - Outi Mattila
- VTT Technical Research Centre of Finland Ltd, P.O. Box 1000, FI-02044 VTT, Finland.
| | - Emilia Nordlund
- VTT Technical Research Centre of Finland Ltd, P.O. Box 1000, FI-02044 VTT, Finland.
| | - Tuula Sontag-Strohm
- Department of Food and Nutrition, University of Helsinki, P.O. Box 66, 00014 Helsinki, Finland.
| |
Collapse
|
7
|
Creation of Straight-Chain Cationic Polysaccharide-Based Bile Salt Sequestrants Made from Euglenoid β-1,3-Glucan as Potential Antidiabetic Agents. Pharm Res 2018; 36:23. [DOI: 10.1007/s11095-018-2553-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 11/30/2018] [Indexed: 12/12/2022]
|
8
|
Korompokis K, Nilsson L, Zielke C. The effect of in vitro gastrointestinal conditions on the structure and conformation of oat β-glucan. Food Hydrocoll 2018. [DOI: 10.1016/j.foodhyd.2017.11.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
9
|
|
10
|
Capuano E. The behavior of dietary fiber in the gastrointestinal tract determines its physiological effect. Crit Rev Food Sci Nutr 2017; 57:3543-3564. [DOI: 10.1080/10408398.2016.1180501] [Citation(s) in RCA: 135] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Edoardo Capuano
- Food Quality and Design Group, Wageningen University, Wageningen, The Netherlands
| |
Collapse
|
11
|
Yucel Falco C, Sotres J, Rascón A, Risbo J, Cárdenas M. Design of a potentially prebiotic and responsive encapsulation material for probiotic bacteria based on chitosan and sulfated β-glucan. J Colloid Interface Sci 2017; 487:97-106. [DOI: 10.1016/j.jcis.2016.10.019] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 10/09/2016] [Accepted: 10/11/2016] [Indexed: 12/16/2022]
|
12
|
Gunness P, Flanagan BM, Mata JP, Gilbert EP, Gidley MJ. Molecular interactions of a model bile salt and porcine bile with (1,3:1,4)-β-glucans and arabinoxylans probed by 13C NMR and SAXS. Food Chem 2016; 197:676-85. [DOI: 10.1016/j.foodchem.2015.10.104] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 09/23/2015] [Accepted: 10/21/2015] [Indexed: 11/16/2022]
|
13
|
Verspreet J, Damen B, Broekaert WF, Verbeke K, Delcour JA, Courtin CM. A Critical Look at Prebiotics Within the Dietary Fiber Concept. Annu Rev Food Sci Technol 2016; 7:167-90. [PMID: 26735801 DOI: 10.1146/annurev-food-081315-032749] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This article reviews the current knowledge of the health effects of dietary fiber and prebiotics and establishes the position of prebiotics within the broader context of dietary fiber. Although the positive health effects of specific fibers on defecation, reduction of postprandial glycemic response, and maintenance of normal blood cholesterol levels are generally accepted, other presumed health benefits of dietary fibers are still debated. There is evidence that specific dietary fibers improve the integrity of the epithelial layer of the intestines, increase the resistance against pathogenic colonization, reduce the risk of developing colorectal cancer, increase mineral absorption, and have a positive impact on the immune system, but these effects are neither generally acknowledged nor completely understood. Many of the latter effects are thought to be particularly elicited by prebiotics. Although the prebiotic concept evolved significantly during the past two decades, the line between prebiotics and nonprebiotic dietary fiber remains vague. Nevertheless, scientific evidence demonstrating the health-promoting potential of prebiotics continues to accumulate and suggests that prebiotic fibers have their rightful place in a healthy diet.
Collapse
Affiliation(s)
- Joran Verspreet
- Laboratory of Food Chemistry and Biochemistry.,Leuven Food Science and Nutrition Research Center (LFoRCe).,Department of Microbial and Molecular Systems (M2S), KU Leuven, and
| | - Bram Damen
- Laboratory of Food Chemistry and Biochemistry.,Leuven Food Science and Nutrition Research Center (LFoRCe).,Department of Microbial and Molecular Systems (M2S), KU Leuven, and
| | | | - Kristin Verbeke
- Leuven Food Science and Nutrition Research Center (LFoRCe).,Translational Research in Gastrointestinal Disorders (TARGID), KU Leuven, 3001 Leuven, Belgium;
| | - Jan A Delcour
- Laboratory of Food Chemistry and Biochemistry.,Leuven Food Science and Nutrition Research Center (LFoRCe).,Department of Microbial and Molecular Systems (M2S), KU Leuven, and
| | - Christophe M Courtin
- Laboratory of Food Chemistry and Biochemistry.,Leuven Food Science and Nutrition Research Center (LFoRCe).,Department of Microbial and Molecular Systems (M2S), KU Leuven, and
| |
Collapse
|