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Kar A, Olenskyj AG, Garcia Guerrero M, Graham R, Bornhorst GM. Interplay of egg white gel pH and intragastric pH: Impact on breakdown kinetics and mass transport processes. Food Res Int 2023; 173:113290. [PMID: 37803603 DOI: 10.1016/j.foodres.2023.113290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 07/13/2023] [Accepted: 07/16/2023] [Indexed: 10/08/2023]
Abstract
Egg white gels have been utilized as a model system to study protein breakdown kinetics based on physical and biochemical breakdown processes during in vitro gastric digestion. Additionally, the impact of regulating intragastric pH on the breakdown kinetic processes was investigated. The present study evaluated the impact of gel pH (based on the pH of protein dispersion prepared at pH 3, 5 and 7.5) and intragastric pH regulation (with or without adjustment to pH 2 during in vitro gastric digestion) on the effective diffusion of gastric juice components (water and HCl), gel softening kinetics during gastric digestion, microstructural analysis using micro- computed tomography and protein hydrolysis in the liquid and solid fraction of egg white gel digesta. Egg white gels were subjected to 30 s oral digestion and 15, 30, 60, 120, 180 or 240 min gastric digestion in a static in vitro gastric digestion model, with or without gastric pH adjustment to pH 2. The gel pH affected all the properties measured during gastric digestion and each gel pH represented a specific driving mechanism for protein breakdown. A lower gel pH (pH 3) demonstrated a higher diffusion of moisture and acid, resulting in faster softening (p < 0.05). An intermediate pH (pH 5) showed greater protein-protein interactions due to the proximity to the isoelectric point of egg white proteins, resulting in very slow softening during digestion (p < 0.05), and a higher pH (pH 7) resulted in higher acid diffusion, intermediate gel hardness and very slow softening kinetics (p < 0.05). The gastric pH adjustment during digestion of egg protein gels affected (p < 0.05) the equilibrium moisture and acid contents as well as protein hydrolysis. The study confirmed that there is an interplay between initial gel pH and the intragastric pH which affected the breakdown kinetics of egg white gels during the gastric digestion process.
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Affiliation(s)
| | | | | | | | - Gail M Bornhorst
- University of California, Davis, USA; Riddet Institute, Palmerston North, New Zealand.
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Vasapolli R, Ailloud F, Suerbaum S, Neumann J, Koch N, Macke L, Schirra J, Mayerle J, Malfertheiner P, Schulz C. Intraprocedural gastric juice analysis as compared to rapid urease test for real-time detection of Helicobacter pylori. World J Gastroenterol 2023; 29:1638-1647. [PMID: 36970593 PMCID: PMC10037247 DOI: 10.3748/wjg.v29.i10.1638] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 01/15/2023] [Accepted: 02/22/2023] [Indexed: 03/14/2023] Open
Abstract
BACKGROUND Endofaster is an innovative technology that can be combined with upper gastrointestinal endoscopy (UGE) to perform gastric juice analysis and real-time detection of Helicobacter pylori (H. pylori).
AIM To assess the diagnostic performance of this technology and its impact on the management of H. pylori in the real-life clinical setting.
METHODS Patients undergoing routine UGE were prospectively recruited. Biopsies were taken to assess gastric histology according to the updated Sydney system and for rapid urease test (RUT). Gastric juice sampling and analysis was performed using the Endofaster, and the diagnosis of H. pylori was based on real-time ammonium measurements. Histological detection of H. pylori served as the diagnostic gold standard for comparing Endofaster-based H. pylori diagnosis with RUT-based H. pylori detection.
RESULTS A total of 198 patients were prospectively enrolled in an H. pylori diagnostic study by Endofaster-based gastric juice analysis (EGJA) during the UGE. Biopsies for RUT and histological assessment were performed on 161 patients (82 men and 79 women, mean age 54.8 ± 19.2 years). H. pylori infection was detected by histology in 47 (29.2%) patients. Overall, the sensitivity, specificity, accuracy, positive predictive value, and negative predictive value (NPV) for H. pylori diagnosis by EGJA were 91.5%, 93.0%, 92.6%, 84.3%, and 96.4%, respectively. In patients on treatment with proton pump inhibitors, diagnostic sensitivity was reduced by 27.3%, while specificity and NPV were unaffected. EGJA and RUT were comparable in diagnostic performance and highly concordant in H. pylori detection (κ-value = 0.85).
CONCLUSION Endofaster allows for rapid and highly accurate detection of H. pylori during gastroscopy. This may guide taking additional biopsies for antibiotic susceptibility testing during the same procedure and then selecting an individually tailored eradication regimen.
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Affiliation(s)
- Riccardo Vasapolli
- Medical Department ІІ, University Hospital LMU Munich, Munich 81377, Germany
- Deutsches Zentrum für Infektionsforschung, Partner Site Munich, Munich 81377, Germany
| | - Florent Ailloud
- Max von Pettenkofer Institute, Faculty of Medicine, Ludwig-Maximilians University of Munich, Munich 80336, Germany
- National Reference Center for Helicobacter pylori, Munich 81377, Germany
| | - Sebastian Suerbaum
- Deutsches Zentrum für Infektionsforschung, Partner Site Munich, Munich 81377, Germany
- Max von Pettenkofer Institute, Faculty of Medicine, Ludwig-Maximilians University of Munich, Munich 80336, Germany
- National Reference Center for Helicobacter pylori, Munich 81377, Germany
| | - Jens Neumann
- Institute of Pathology, Faculty of Medicine, Ludwig-Maximilians-University of Munich, Munich 81377, Germany
| | - Nadine Koch
- Medical Department ІІ, University Hospital LMU Munich, Munich 81377, Germany
| | - Lukas Macke
- Medical Department ІІ, University Hospital LMU Munich, Munich 81377, Germany
- Deutsches Zentrum für Infektionsforschung, Partner Site Munich, Munich 81377, Germany
| | - Jörg Schirra
- Medical Department ІІ, University Hospital LMU Munich, Munich 81377, Germany
| | - Julia Mayerle
- Medical Department ІІ, University Hospital LMU Munich, Munich 81377, Germany
| | - Peter Malfertheiner
- Medical Department ІІ, University Hospital LMU Munich, Munich 81377, Germany
| | - Christian Schulz
- Medical Department ІІ, University Hospital LMU Munich, Munich 81377, Germany
- Deutsches Zentrum für Infektionsforschung, Partner Site Munich, Munich 81377, Germany
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Go EJ, Ryu BR, Ryu SJ, Kim HB, Lee HT, Kwon JW, Baek JS, Lim JD. An Enhanced Water Solubility and Stability of Anthocyanins in Mulberry Processed with Hot Melt Extrusion. Int J Mol Sci 2021; 22:ijms222212377. [PMID: 34830259 PMCID: PMC8625858 DOI: 10.3390/ijms222212377] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/12/2021] [Accepted: 11/15/2021] [Indexed: 01/25/2023] Open
Abstract
Mulberry fruits are rich sources of anthocyanins that exhibit beneficial biological activity. These anthocyanins become instable in an aqueous media, leading to their low bioavailability. In this study, a colloidal dispersion was produced by processing mulberry samples with hot-melt extrusion. In this process, hydrophilic polymer matrices were used to disperse the compound in an aqueous media. Mulberry samples were processed with hot-melt extrusion and in the presence of an ionization agent and sodium alginate to form mulberry-extrudate solid formulations. The particle size of mulberry-extrudate solid formulations decreased, while the total phenol content, the total anthocyanin content, and solubility increased. Fourier transform infrared spectroscopy (FT-IR) revealed that mulberry-extrudate solid formulations now contained new functional groups, such as -COOH group. We investigated whether mulberry-extrudate solid formulations had a positive impact on the stability of anthocyanins. The non-extrudate mulberry sample and mulberry-extrudate solid formulations were incubated with a simulated gastric fluid system and an intestinal fluid system. The number of released anthocyanins was determined with HPLC. We found that anthocyanins were released rapidly from non-extrudate mulberry extract. Mulberry-extrudate solid formulations contained a large number of available anthocyanins even after being incubated for 180 min in the intestinal fluid system. Thus, hot-melt extrusion enhanced water solubility and stability of anthocyanins with the prolonged release.
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Affiliation(s)
- Eun-Ji Go
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon 24341, Korea; (E.-J.G.); (B.-R.R.); (S.-J.R.)
| | - Byeong-Ryeol Ryu
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon 24341, Korea; (E.-J.G.); (B.-R.R.); (S.-J.R.)
| | - Su-Ji Ryu
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon 24341, Korea; (E.-J.G.); (B.-R.R.); (S.-J.R.)
| | - Hyun-Bok Kim
- National Institute of Agricultural Sciences, RDA, Wanju 55365, Korea;
| | - Hyun-Tai Lee
- Division of Applied Bioengineering, Dongeui University, Busan 47940, Korea;
| | - Jin-Woo Kwon
- Department of Orthopedics, The Catholic University, Seoul 06591, Korea;
| | - Jong-Suep Baek
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon 24341, Korea; (E.-J.G.); (B.-R.R.); (S.-J.R.)
- Department of Herbal Medicine Resource, Kangwon National University, Samcheok 25949, Korea
- Correspondence: (J.-S.B.); (J.-D.L.); Tel.: +82-33-540-3324 (J.-S.B.); +82-33-540-3323 (J.-D.L.)
| | - Jung-Dae Lim
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon 24341, Korea; (E.-J.G.); (B.-R.R.); (S.-J.R.)
- Department of Herbal Medicine Resource, Kangwon National University, Samcheok 25949, Korea
- Correspondence: (J.-S.B.); (J.-D.L.); Tel.: +82-33-540-3324 (J.-S.B.); +82-33-540-3323 (J.-D.L.)
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Rizwanullah M, Perwez A, Mir SR, Alam Rizvi MM, Amin S. Exemestane encapsulated polymer-lipid hybrid nanoparticles for improved efficacy against breast cancer: optimization, in vitrocharacterization and cell culture studies. Nanotechnology 2021; 32:415101. [PMID: 34198267 DOI: 10.1088/1361-6528/ac1098] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 07/01/2021] [Indexed: 06/13/2023]
Abstract
Polymer-lipid hybrid nanoparticles (PLHNPs) are novel nanoplatforms for the effective delivery of a lipophilic drug in the management of a variety of solid tumors. The present work was designed to develop exemestane (EXE) encapsulated D-alpha-tocopheryl polyethylene glycol succinate (TPGS) based PLHNPs (EXE-TPGS-PLHNPs) for controlled delivery of EXE for breast cancer management. EXE-TPGS-PLHNPs were formulated by single-step nano-precipitation technique and statistically optimized by a 33Box-Behnken design using Design expert®software. The polycaprolactone (PCL;X1), phospholipon 90 G (PL-90G;X2), and surfactant (X3) were selected as independent factors while particles size (PS;Y1), polydispersity index (PDI;Y2), and %entrapment efficiency (%EE;Y3) were chosen as dependent factors. The average PS, PDI, and %EE of the optimized EXE-TPGS-PLHNPs was observed to be 136.37 ± 3.27 nm, 0.110 ± 0.013, and 88.56 ± 2.15% respectively. The physical state of entrapped EXE was further validated by Fourier-transform infrared spectroscopy, differential scanning calorimetry, and powder x-ray diffraction that revealed complete encapsulation of EXE in the hybrid matrix of PLHNPs with no sign of significant interaction between drug and excipients.In vitrorelease study in simulated gastrointestinal fluids revealed initial fast release for 2 h after that controlled release profile up to 24 h of study. Moreover, optimized EXE-TPGS-PLHNPs exhibited excellent stability in gastrointestinal fluids as well as colloidal stability in different storage concentrations. Furthermore, EXE-TPGS-PLHNPs exhibited distinctively higher cellular uptake and time and dose-dependent cytotoxicity against MCF-7 breast tumor cells compared to EXE-PLHNPs without TPGS and free EXE. The obtained results suggested that EXE-TPGS-PLHNPs can be a promising platform for the controlled delivery of EXE for the effective treatment of breast cancer.
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Affiliation(s)
- Md Rizwanullah
- Formulation Research Lab, Department of Pharmaceutics, School of Pharmaceutical Education and Research (SPER), Jamia Hamdard, New Delhi-110062, India
| | - Ahmad Perwez
- Genome Biology Lab, Department of Biosciences, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi-110025, India
| | - Showkat Rasool Mir
- Phytopharmaceutical Laboratory, Department of Pharmacognosy and Phytochemistry, School of Pharmaceutical Education and Research (SPER), Jamia Hamdard, New Delhi-110062, India
| | - Mohd Moshahid Alam Rizvi
- Genome Biology Lab, Department of Biosciences, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi-110025, India
| | - Saima Amin
- Formulation Research Lab, Department of Pharmaceutics, School of Pharmaceutical Education and Research (SPER), Jamia Hamdard, New Delhi-110062, India
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Huang Y, Lin J, Tang X, Wang Z, Yu S. Grape seed proanthocyanidin-loaded gel-like W/O/W emulsion stabilized by genipin-crosslinked alkaline soluble polysaccharides-whey protein isolate conjugates: Fabrication, stability, and in vitro digestion. Int J Biol Macromol 2021; 186:759-769. [PMID: 34271051 DOI: 10.1016/j.ijbiomac.2021.07.062] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 06/25/2021] [Accepted: 07/11/2021] [Indexed: 11/19/2022]
Abstract
The present work aims to fabricate the genipin-crosslinked alkaline soluble polysaccharides-whey protein isolate conjugates (G-AWC) to stabilize W/O/W emulsions for encapsulation and delivery of grape seed proanthocyanidins (GSP). After crosslinking reaction, the molecular weight was increased and surface hydrophobicity was decreased. Then, the G-AWC and polyglycerol polyricinoleate (PGPR, a lipophilic emulsifier) were employed to prepare a GSP-loaded W/O/W emulsion with the addition of gelatin and sucrose in W1 phase via a two-step procedure. Creamed emulsion could be fabricated at W1/O volume fraction (Φ) of 10%-70% and further increased Φ to 75% or even up to 90% could obtain gel-like emulsion with notably elastic behaviors. In the W1/O/W2 emulsion with Φ of 80%, the encapsulation efficiency (EE) of GSP reached up to 95.86%, and decreased by ca. 10% after a week of storage. Moreover, the encapsulated GSP in the emulsion showed a remarkably higher bioaccessibility (40.72%) compared to free GSP (13.11%) in the simulated gastrointestinal digestion. These results indicated that G-AWC-stabilized W/O/W emulsions could be an effective carrier to encapsulate water-soluble bioactive compounds with enhanced stability and bioaccessibility.
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Affiliation(s)
- Yaocheng Huang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jiawei Lin
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiangyi Tang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zhiming Wang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Shujuan Yu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou 510640, China; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou 510640, China.
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Majdoub YOE, Ginestra G, Mandalari G, Dugo P, Mondello L, Cacciola F. The Digestibility of Hibiscus sabdariffa L. Polyphenols Using an In Vitro Human Digestion Model and Evaluation of Their Antimicrobial Activity. Nutrients 2021; 13:nu13072360. [PMID: 34371869 PMCID: PMC8308902 DOI: 10.3390/nu13072360] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 07/01/2021] [Accepted: 07/07/2021] [Indexed: 02/07/2023] Open
Abstract
Hibiscus sabdariffa L. (H.s.) is a polyphenolic-rich plant commonly consumed either as a beverage or spice. The aim of the present study was to evaluate the in vitro digestibility of H.s. polyphenols using an in vitro model of digestion which simulates the human stomach and small intestine. The bioaccessible polyphenols released in the digested samples were analyzed by liquid chromatography coupled to photodiode array and mass spectrometry detection. H.s. anthocyanins (cyanidin-3-O-sambubioside and delphinidin-3-O-sambubioside) content drastically dropped during the digestion process from 2.91 ± 0.03 µg g−1 and 8.53 ± 0.08 µg g−1 (w/w) CG (Cyanidin-glucoside) in the raw extract, respectively, to 0.12 ± 0.01 µg g−1 0.12 ± 0.01 µg g−1 (w/w) CG at the end of duodenal digestion. Total polyphenols also have shown a decrease from 1192.65 ± 30.37 µg g−1 (w/w) in the raw extract to 282.24 ± 7.21 µg g−1 (w/w) by the end of gastric digestion, in contrast to their increase by the end of duodenal digestion 372.91 ± 3.97 µg g−1 (w/w). On the other hand, the decrease in certain compounds (e.g., caffeoylquinicandcoumaroylquinic acids) was observed during gastric digestion resulting in an increase of quinic acid in the duodenal aliquots, thus suggesting that this compound was derived from the degradation of the more complex hydroxycinnamic acids. H.s. extract also exhibited a bacteriostatic effect against Staphylococcus aureus ATCC 6538 (MIC of 2.5 mg mL−1) and a bactericidal effect against a food isolate of Listeria monocytogenes (MBC of 2.5 mg mL−1). The undigested polyphenols of H.s. in the upper gastrointestinal tract enters the colon, where they are metabolized by the gut microbiota. The present study results showed that resistance of H.s. polyphenols during gastrointestinal digestion might affect their uptake, resulting in a decrease in their digestibility.
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Affiliation(s)
- Yassine Oulad El Majdoub
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98168 Messina, Italy; (Y.O.E.M.); (G.G.); (P.D.); (L.M.)
| | - Giovanna Ginestra
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98168 Messina, Italy; (Y.O.E.M.); (G.G.); (P.D.); (L.M.)
| | - Giuseppina Mandalari
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98168 Messina, Italy; (Y.O.E.M.); (G.G.); (P.D.); (L.M.)
- Correspondence: ; Tel.: +39-0906766593
| | - Paola Dugo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98168 Messina, Italy; (Y.O.E.M.); (G.G.); (P.D.); (L.M.)
- Chromaleont s.r.l., c/o Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98168 Messina, Italy
| | - Luigi Mondello
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98168 Messina, Italy; (Y.O.E.M.); (G.G.); (P.D.); (L.M.)
- Chromaleont s.r.l., c/o Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98168 Messina, Italy
- Department of Sciences and Technologies for Human and Environment, University Campus Bio-Medico of Rome, 00128 Rome, Italy
- BeSeps.r.l., c/o Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98168 Messina, Italy
| | - Francesco Cacciola
- Department of Biomedical, Dental, Morphological and Functional Imaging Sciences, University of Messina, 98125 Messina, Italy;
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Kała K, Krakowska A, Zięba P, Opoka W, Muszyńska B. Effect of conservation methods on the bioaccessibility of bioelements from in vitro-digested edible mushrooms. J Sci Food Agric 2021; 101:3481-3488. [PMID: 33280126 DOI: 10.1002/jsfa.10979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/30/2020] [Accepted: 12/06/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND The release of bioelements from edible mushrooms (Agaricus bisporus, Cantharellus cibarius, and Imleria badia) was examined using in vitro simulated gastrointestinal digestion to assess their health-promoting potential. The following samples were tested: fresh, frozen, dried in a food dryer, dried in the sun, and lyophilized. The samples were incubated in gastric juice (pepsin, NaCl, HCl) and in intestinal juice (NaHCO3 , pancreatin, bile salts) with the aim of verifying the bioaccessibility of the bioelements and the digestibility of mushrooms. Four bioelements that are essential for the human body were studied: Mg, Zn, Cu, and Fe. RESULTS It was found that Mg was extracted in the highest amounts from the sun-dried A. bisporus (1.620 g kg-1 d.w.). In the case of microelements, the lyophilized fruiting bodies of I. badia released Zn in the highest quantities (0.180 g kg-1 d.w.). Lyophilization and sun-drying methods were more advantageous than other methods. Fresh material was a more valuable source of bioelements than frozen material. CONCLUSION Our results showed that edible mushrooms have a high content of bioelements that are easily bioaccessible, which indicates their health-promoting properties. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Katarzyna Kała
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Jagiellonian University Medical College, Kraków, Poland
| | - Agata Krakowska
- Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Kraków, Poland
| | - Piotr Zięba
- Department of Vegetable and Medicinal Plants, Faculty of Biotechnology and Horticulture, University of Agriculture in Kraków, Kraków, Poland
| | - Włodzimierz Opoka
- Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Kraków, Poland
| | - Bożena Muszyńska
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Jagiellonian University Medical College, Kraków, Poland
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Banik S, Halder S, Sato H, Onoue S. Self-emulsifying drug delivery system of (R)-α-lipoic acid to improve its stability and oral absorption. Biopharm Drug Dispos 2021; 42:226-233. [PMID: 33843079 DOI: 10.1002/bdd.2277] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 03/02/2021] [Accepted: 03/04/2021] [Indexed: 02/03/2023]
Abstract
The present study was designed to develop a self-emulsifying drug delivery system (SEDDS) of (R)-α-lipoic acid (RLA) to improve the physicochemical and nutraceutical properties of RLA. RLA/SEDDS was prepared using medium-chain triglycerides, Tween 80, and polyethylene glycol 400 as oil, surfactant, and co-surfactant, respectively. The preferable composition of SEDDS was selected according to a pseudo-ternary phase diagram for improved emulsification properties, and its physicochemical and pharmacokinetic properties were evaluated. RLA/SEDDS showed the immediate formation of fine micelles with a mean droplet size of approximately 260 nm when introduced into aqueous media. In simulated gastric fluid, this system could significantly improve the dissolution behavior of RLA and prevent the degradation of RLA, possibly due to the encapsulation of RLA into the emulsion structure. Following the oral administration of RLA/SEDDS (10 mg RLA/kg) in rats, systemic exposure to RLA and dihydrolipoic acid (DHLA), a reduced form of RLA, increased by 7- and 3-fold, respectively. The improved dissolution and gastric stability of RLA could contribute to enhancing systemic exposure to RLA and DHLA after oral administration. From these findings, RLA/SEDDS might be an efficacious dosage option for improving the oral bioavailability as well as nutraceutical properties of RLA.
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Affiliation(s)
- Sujan Banik
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Shimul Halder
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Hideyuki Sato
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Satomi Onoue
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
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Cui W, Ma Z, Li X, Hu X. Structural rearrangement of native and processed pea starches following simulated digestion in vitro and fermentation characteristics of their resistant starch residues using human fecal inoculum. Int J Biol Macromol 2021; 172:490-502. [PMID: 33472022 DOI: 10.1016/j.ijbiomac.2021.01.092] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/27/2020] [Accepted: 01/14/2021] [Indexed: 12/11/2022]
Abstract
Pea starches, in both native (NPS) and retrograded-autoclaved forms (RAPS), were subjected to simulated gastrointestinal (GI) digestion in vitro, their multi-scale structural characteristics, morphological features, molecular distribution and thermal properties were characterized. A gradual increase in the short-/long-range crystallinity, melting enthalpy of gelatinization on increasing digestion time was observed for both the native and retrograded-autoclaved pea starch samples based on the X-ray diffraction, Fourier-transform infrared spectra, solid-state 13CNMR and differential scanning calorimetry measurements. It was especially noticed that the growth rate of crystallinity and double helices, as well as the decrease in Mw values were evidently greater for RAPS than for NPS. To investigate how different molecular fine structure of pea starch substrate affects the gut microbiota shifts and dynamic short-chain fatty acid profile, their resistant starch residues obtained from both native and retrograded-autoclaved pea starch after 8 h of simulated GI tract digestion was used as the fermentation substrate. The levels of acetate, propionate and butyrate gradually increased with the increasing fermentation time for NPS and RAPS. In comparison to the blank control (i.e., the group without the addition of carbohydrate), the fermented NPS and RAPS obviously resulted in an increased abundance of Firmicutes and Bacteroidetes, accompanied by a decrease in Proteobacteria, Actinobacteria and Verrucomicrobia. Both NPS and RAPS promoted different shifts in the microbial community at the genus level, with an increase in the abundance of Bacteroides, Megamonas and Bifidobacterium, as well as a reduction in the abundance of Fusobacterium, Faecalibacterium and Lachnoclostridium in comparison to the blank control samples.
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Affiliation(s)
- Wenxin Cui
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
| | - Zhen Ma
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, China.
| | - Xiaoping Li
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
| | - Xinzhong Hu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
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Harrington JM, Haines LG, Levine KE, Liyanapatirana C, Essader AS, Fernando RA, Robinson VG, Roberts GK, Stout MD, Hooth MJ, Waidyanatha S. Internal dose of vanadium in rats following repeated exposure to vanadyl sulfate and sodium orthovanadate via drinking water. Toxicol Appl Pharmacol 2021; 412:115395. [PMID: 33421504 PMCID: PMC8631130 DOI: 10.1016/j.taap.2021.115395] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 12/28/2020] [Accepted: 12/31/2020] [Indexed: 11/24/2022]
Abstract
Vanadium is a ubiquitous environmental contaminant that exists in multiple oxidation states. Humans are exposed to vanadyl (V4+) and vanadate (V5+) from dietary supplements, food, and drinking water and hence there is a concern for adverse human health. The current investigation is aimed at identifying vanadium oxidation states in vitro and in vivo and internal concentrations following exposure of rats to vanadyl sulfate (V4+) or sodium metavanadate (V5+) via drinking water for 14 d. Investigations in simulated gastric and intestinal fluids showed that V4+ was stable in gastric fluid while V5+ was stable in intestinal fluid. Analysis of rodent plasma showed that the only vanadium present was V4+, regardless of the exposed compound suggesting conversion of V5+ to V4+ in vivo and/or instability of V5+ species in biological matrices. Plasma, blood, and liver concentrations of total vanadium, after normalizing for vanadium dose consumed, were higher in male and female rats following exposure to V5+ than to V4+. Following exposure to either V4+ or V5+, the total vanadium concentration in plasma was 2- to 3-fold higher than in blood suggesting plasma as a better matrix than blood for measuring vanadium in future work. Liver to blood ratios were 4-7 demonstrating significant tissue retention following exposure to both compounds. In conclusion, these data point to potential differences in absorption and disposition properties of V4+ and V5+ salts and may explain the higher sensitivity in rats following drinking water exposure to V5+ than V4+ and highlights the importance of internal dose determination in toxicology studies.
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Affiliation(s)
| | - Laura G Haines
- RTI International, Research Triangle Park, NC, United States
| | - Keith E Levine
- RTI International, Research Triangle Park, NC, United States
| | | | - Amal S Essader
- RTI International, Research Triangle Park, NC, United States
| | | | - Veronica G Robinson
- Division of the National Toxicology Program, NIEHS, Research Triangle Park, NC, United States
| | - Georgia K Roberts
- Division of the National Toxicology Program, NIEHS, Research Triangle Park, NC, United States
| | - Matthew D Stout
- Division of the National Toxicology Program, NIEHS, Research Triangle Park, NC, United States
| | - Michelle J Hooth
- Division of the National Toxicology Program, NIEHS, Research Triangle Park, NC, United States
| | - Suramya Waidyanatha
- Division of the National Toxicology Program, NIEHS, Research Triangle Park, NC, United States.
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11
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Chen Q, Santos MMD, Tanabe P, Harraka GT, Magnuson JT, McGruer V, Qiu W, Shi H, Snyder SA, Schlenk D. Bioassay guided analysis coupled with non-target chemical screening in polyethylene plastic shopping bag fragments after exposure to simulated gastric juice of Fish. J Hazard Mater 2021; 401:123421. [PMID: 32763709 DOI: 10.1016/j.jhazmat.2020.123421] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 07/02/2020] [Accepted: 07/05/2020] [Indexed: 06/11/2023]
Abstract
In this study, fragments of polyethylene plastic bags were treated with simulated gastric juice of fish for 16 h. Following solid-phase extraction, methanol eluents caused acute toxicity to embryos and larvae of Japanese medaka. Chromatographic fractions (polar to more non-polar with numbers increasing) of the extract were evaluated for toxicity and estrogenic activity using medaka and an estrogen receptor (ER) cell-line. Fractions 6 and 9 had the highest estrogenic effects with relative hydrophobic chemicals. The vtg expression in fraction 6 was 22-fold higher than control, and the ER cellular response in fraction 9 was 8.5-fold higher than controls. Following non-target screening (NTS), several novel phthalates and phenols were identified in the above two fractions. Fractions 1 and 2 appeared to be primarily responsible for the acute toxicity observed with the whole extract. The hatching rate decreased to 36 % in fraction 2, and was not observed following exposure to fraction 1. NTS of these fractions indicated 635 and 808 entities, respectively, most without toxicity information. These results indicate plastic leachates from gastric juices of fish are complex mixtures of many compounds that can have acute reproductive and sublethal endocrine impacts in fish.
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Affiliation(s)
- Qiqing Chen
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200241, China.
| | - Mauricius Marques Dos Santos
- Nanyang Environment & Water Research Institute (NEWRI), Nanyang Technological University, 1 Cleantech Loop, CleanTech One, #06-08, 637141, Singapore; Department of Chemical & Environmental Engineering, University of Arizona, 1133 E James E Rogers Way, Harshbarger 108, Tucson, AZ, 85721-0011, USA
| | - Philip Tanabe
- Department of Environmental Sciences, University of California, Riverside, California 92521, United States
| | - Gary T Harraka
- Department of Environmental Sciences, University of California, Riverside, California 92521, United States
| | - Jason T Magnuson
- Department of Environmental Sciences, University of California, Riverside, California 92521, United States
| | - Victoria McGruer
- Department of Environmental Sciences, University of California, Riverside, California 92521, United States
| | - Wenhui Qiu
- State Environmental Protection Key Laboratory of Integrated Surface Water- Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Huahong Shi
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200241, China
| | - Shane A Snyder
- Nanyang Environment & Water Research Institute (NEWRI), Nanyang Technological University, 1 Cleantech Loop, CleanTech One, #06-08, 637141, Singapore; Department of Chemical & Environmental Engineering, University of Arizona, 1133 E James E Rogers Way, Harshbarger 108, Tucson, AZ, 85721-0011, USA
| | - Daniel Schlenk
- Department of Environmental Sciences, University of California, Riverside, California 92521, United States; Institute of Environmental Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
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12
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Abstract
EndoFaster is a high precision device for gastric juice analysis in real time during gastroscopy that enables detection of Helicobacter pylori infection and hypochlorhydric/achlorhydric conditions through the measurement of ammonium concentration and gastric pH. The high accuracy and feasibility of this technology enables a more accurate diagnosis and a reduced number of histologies, focusing the attention of the endoscopist on patients with high risk for cancer progression and limiting or avoiding biopsies on the low-risk ones while also saving costs and time.
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Affiliation(s)
- Cristiano Spada
- Digestive Endoscopy Unit and Gastroenterology, Fondazione Poliambulanza, Brescia, Italy.
- Digestive Endoscopy Unit, Catholic University of the Sacred Heart, Rome, Italy.
| | - Stefania Piccirelli
- Digestive Endoscopy Unit and Gastroenterology, Fondazione Poliambulanza, Brescia, Italy
- Digestive Endoscopy Unit, Catholic University of the Sacred Heart, Rome, Italy
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13
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He X, Zhang H, Shi H, Liu W, Sahle-Demessie E. Fates of Au, Ag, ZnO, and CeO 2 Nanoparticles in Simulated Gastric Fluid Studied using Single-Particle-Inductively Coupled Plasma-Mass Spectrometry. J Am Soc Mass Spectrom 2020; 31:2180-2190. [PMID: 32881526 PMCID: PMC7877237 DOI: 10.1021/jasms.0c00278] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The increasing use of engineered nanoparticles (ENPs) in many industries has generated significant research interest regarding their impact on the environment and human health. The major routes of ENPs to enter the human body are inhalation, skin contact, and ingestion. Following ingestion, ENPs have a long contact time in the human stomach. Hence, it is essential to know the fate of the ENPs under gastric conditions. This study aims to investigate the fate of the widely used nanoparticles Ag-NP, Au-NP, CeO2-NP, and ZnO-NP in simulated gastric fluid (SGF) under different conditions through the application of single-particle inductively coupled plasma-mass spectrometry (SP-ICP-MS). The resulting analytical methods have size detection limits for Ag-NP, Au-NP, ZnO-NP, and CeO2-NP from 15 to 35 nm, and the particle concentration detection limit is 135 particles/mL. Metal ions corresponding to the ENPs of interest were detected simultaneously with detection limits from 0.02 to 0.1 μg/L. The results showed that ZnO-NPs dissolved completely and rapidly in SGF, whereas Au-NPs and CeO2-NPs showed apparent aggregation and did not dissolve significantly. Both aggregation and dissolution were observed in Ag-NP samples following exposure to SGF. The size distributions and concentrations of ENPs were affected by the original ENP concentration, ENP size, the contact time in SGF, and temperature. This work represents a significant advancement in the understanding of ENP characteristics under gastric conditions.
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Affiliation(s)
- Xiaolong He
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
- Center for Single Particle, Single Cell and Single Molecule Monitoring (CS3M), Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Haiting Zhang
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
- Center for Single Particle, Single Cell and Single Molecule Monitoring (CS3M), Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Honglan Shi
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
- Center for Single Particle, Single Cell and Single Molecule Monitoring (CS3M), Missouri University of Science and Technology, Rolla, Missouri 65409, United States
- Center for Research in Energy and Environment, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Wenyan Liu
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
- Center for Research in Energy and Environment, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Endalkachew Sahle-Demessie
- The U.S. Environmental Protection Agency, ORD, CESER, LRTD, 26 West Martin Luther King Jr. Drive, Cincinnati, Ohio 45268, United States
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14
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Nicola S, Rolla G, Bucca C, Geronazzo G, Ridolfi I, Ferraris A, Fusaro E, Peroni CL, Dughera L, Brussino L. Gastric Juice Expression of Th-17 and T-Reg Related Cytokines in Scleroderma Esophageal Involvement. Cells 2020; 9:E2106. [PMID: 32947843 PMCID: PMC7564480 DOI: 10.3390/cells9092106] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/07/2020] [Accepted: 09/11/2020] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Systemic sclerosis (SSc) is a connective tissue disorder which key feature is a fibrotic process. The role of Endothelin-1 (ET-1) and T-helper (Th)-1 cells in lung and skin fibrosis is well known, although Th17- and Treg-cells were found to be involved. However, no studies analyzed cytokines expression in gastric-juice of SSc patients. Our study aimed to evaluate proinflammatory and profibrotic cytokines in gastric-juice of SSc patients and to investigate their correlations with esophageal dysmotility. METHODS Patients performed upper-gastrointestinal-endoscopy with gastric-juice collection, esophageal manometry and thoracic CT-scan. GM-CSF, ET-1, Th-1 (IFN-γ, IL-1β, TNF-α, IL-2, IL-6, IL-9), Th-17 (IL-17, IL-21, IL-22, IL-23) and T-reg (IL-10, TGF-β) related cytokines were measured in 29 SSc-patients and 20 healthy-controls. RESULTS Patients showed significant lower levels of IL-6, IL-17, IL-22 and ET-1 (p < 0.005) compared with controls. Patients with atrophic gastritis presented significant lower levels of IL-2, IL-9, IL-6, TGF-β, GM-CSF, IL-17 and ET-1 (p < 0.005) compared to patients without gastritis. Increased values of IL-2, IL-9, IL-1β, IL-17, ET-1 and GM-CSF (p < 0.005) were observed in patients with esophageal impairment. This is the first report of cytokines measurement in gastric juice of patients with SSc. The high IL-17 concentrations in gastric-juice of scleroderma patients with esophageal dysmotility support the signature of Th-17 cells in scleroderma esophageal fibrosis.
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Affiliation(s)
- Stefania Nicola
- Department of Medical Sciences, Allergy and Clinical Immunology Unit, University of Torino & Mauriziano Hospital, 10128 Turin, Italy; (S.N.); (G.R.); (C.B.); (G.G.); (I.R.)
| | - Giovanni Rolla
- Department of Medical Sciences, Allergy and Clinical Immunology Unit, University of Torino & Mauriziano Hospital, 10128 Turin, Italy; (S.N.); (G.R.); (C.B.); (G.G.); (I.R.)
| | - Caterina Bucca
- Department of Medical Sciences, Allergy and Clinical Immunology Unit, University of Torino & Mauriziano Hospital, 10128 Turin, Italy; (S.N.); (G.R.); (C.B.); (G.G.); (I.R.)
| | - Giada Geronazzo
- Department of Medical Sciences, Allergy and Clinical Immunology Unit, University of Torino & Mauriziano Hospital, 10128 Turin, Italy; (S.N.); (G.R.); (C.B.); (G.G.); (I.R.)
| | - Irene Ridolfi
- Department of Medical Sciences, Allergy and Clinical Immunology Unit, University of Torino & Mauriziano Hospital, 10128 Turin, Italy; (S.N.); (G.R.); (C.B.); (G.G.); (I.R.)
| | - Andrea Ferraris
- Division of Diagnostic Imaging, Department of Surgical Sciences, Città della Salute e della Scienza Hospital, University of Turin, 10126 Turin, Italy;
| | - Enrico Fusaro
- Rheumatology Department, Azienda Ospedaliera Città della Salute e della Scienza di Torino, 10126 Turin, Italy; (E.F.); (C.L.P.)
| | - Clara Lisa Peroni
- Rheumatology Department, Azienda Ospedaliera Città della Salute e della Scienza di Torino, 10126 Turin, Italy; (E.F.); (C.L.P.)
| | - Luca Dughera
- Unit of Digestive Motility and Endoscopy, Department of Medicine, Città della Salute e della Scienza, 10126 Turin, Italy;
| | - Luisa Brussino
- Department of Medical Sciences, Allergy and Clinical Immunology Unit, University of Torino & Mauriziano Hospital, 10128 Turin, Italy; (S.N.); (G.R.); (C.B.); (G.G.); (I.R.)
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15
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Suresh H, Ho V, Zhou J. Rheological Characteristics of Soluble Fibres during Chemically Simulated Digestion and their Suitability for Gastroparesis Patients. Nutrients 2020; 12:E2479. [PMID: 32824535 PMCID: PMC7468937 DOI: 10.3390/nu12082479] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 08/11/2020] [Accepted: 08/13/2020] [Indexed: 12/12/2022] Open
Abstract
Dietary fibres are an integral part of a balanced diet. Consumption of a high-fibre diet confers many physiological and metabolic benefits. However, fibre is generally avoided by individuals with gastrointestinal motility disorders like gastroparesis due to increased likelihood of exacerbated symptoms. Low-viscosity soluble fibres have been identified as a possible source of fibre tolerable for these individuals. The aim of this study is to determine the rheological properties of 10 common commercially available soluble fibres in chemically simulated digestive conditions and evaluate their suitability for individuals with mild to moderate gastroparesis, a gastric motility disorder. Rheological testing under neutral condition (distilled water pH 7) and chemically simulated gastric digestion were evaluated to determine the yield point and relative viscosity of each fibre. Our results reveal two rheological categories of soluble fibres; pseudoplastic and dilatant. Simulated digestion was shown to significantly alter the yield-points of psyllium husk, iota-carrageenan, beta-glucan, apple-fibre pectin, and inulin. Gum Arabic and partially hydrolysed guar gum showed the lowest viscosities and were not affected under simulated digestion, characteristics that make them potential candidate fibres for patients with gastroparesis. Altogether, our results demonstrate that digestion can have a significant impact on fibre viscosity and should be taken into consideration when evaluating the suitability of fibres for patients with gastric motility disorders.
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Affiliation(s)
- Harsha Suresh
- School of Medicine, Western Sydney University, Campbelltown NSW 2560, Australia; (H.S.); (V.H.)
- Gastrointestinal Motility Disorders Unit, Western Sydney University, Campbelltown NSW 2560, Australia
| | - Vincent Ho
- School of Medicine, Western Sydney University, Campbelltown NSW 2560, Australia; (H.S.); (V.H.)
- Gastrointestinal Motility Disorders Unit, Western Sydney University, Campbelltown NSW 2560, Australia
- University Medical Clinic of Camden & Campbelltown (UMCCC), Campbelltown NSW 2560, Australia
| | - Jerry Zhou
- School of Medicine, Western Sydney University, Campbelltown NSW 2560, Australia; (H.S.); (V.H.)
- Gastrointestinal Motility Disorders Unit, Western Sydney University, Campbelltown NSW 2560, Australia
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16
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Rasheed U, Ain QU, Yaseen M, Santra S, Yao X, Liu B. Assessing the Aflatoxins Mitigation Efficacy of Blueberry Pomace Biosorbent in Buffer, Gastrointestinal Fluids and Model Wine. Toxins (Basel) 2020; 12:E466. [PMID: 32708252 PMCID: PMC7405022 DOI: 10.3390/toxins12070466] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/13/2020] [Accepted: 07/16/2020] [Indexed: 11/16/2022] Open
Abstract
Blueberry (BB) and cherry pomace were investigated as new biosorbents for aflatoxins (AFs) sequestration from buffered solutions, gastrointestinal fluids and model wine. Among the tested biosorbents, BB exhibited the maximum adsorption performance for AFs and hence was further selected for the optimization of experimental parameters like pH, dosage, time and initial concentration of AFs. Material characterizations via scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, N2 adsorption-desorption isothermal studies, thermogravimetric analysis (TGA) and X-ray photon spectroscopy (XPS) techniques revealed useful information about the texture and chemical composition of the biosorbents. The fitting of isothermal data with different models showed the model suitability trend as: Sips model > Langmuir model > Freundlich model, where the theoretical maximum adsorption capacity calculated from the Sips model was 4.6, 2.9, 2.7 and 2.4 mg/g for AFB1, AFB2, AFG1 and AFG2, respectively. Kinetics study revealed the fast AFs uptake by BB (50-90 min) while thermodynamics studies suggested the exothermic nature of the AFs adsorption from both, single as well as multi-toxin buffer systems, gastrointestinal fluids and model wine. Accrediting to the fast and efficient adsorption performance, green and facile fabrication approach and cost-effectiveness, the newly designed BB pomace can be counted as a promising contender for the sequestration of AFs and other organic pollutants.
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Affiliation(s)
- Usman Rasheed
- Institute of Applied Microbiology, College of Agriculture, Guangxi University, Nanning 530005, China; (U.R.); (S.S.); (X.Y.)
| | - Qurat Ul Ain
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;
| | - Muhammad Yaseen
- Institute of Chemical Sciences, University of Peshawar, Peshawar, KP 25120, Pakistan;
| | - Sayantan Santra
- Institute of Applied Microbiology, College of Agriculture, Guangxi University, Nanning 530005, China; (U.R.); (S.S.); (X.Y.)
| | - Xiaohua Yao
- Institute of Applied Microbiology, College of Agriculture, Guangxi University, Nanning 530005, China; (U.R.); (S.S.); (X.Y.)
| | - Bin Liu
- Institute of Applied Microbiology, College of Agriculture, Guangxi University, Nanning 530005, China; (U.R.); (S.S.); (X.Y.)
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17
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Cheng X, Zhang Q, Li Z, Dong C, Jiang S, Sun YA, Wang G. Determination of behavior of catalpol hexapropionate in simulated gastric conditions by UPLC-ESI-HRMS. Sci Rep 2020; 10:11185. [PMID: 32636447 PMCID: PMC7341753 DOI: 10.1038/s41598-020-68056-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 06/15/2020] [Indexed: 11/09/2022] Open
Abstract
Catalpol hexapropionate (CP-6) was designed and synthesized as anti-aging drug. In order to investigate the behavior of CP-6 in simulated gastric juice, ultra-high performance liquid chromatography-electrospray ionization-high resolution mass spectrometry was used to determinate the components produced in simulated gastric conditions. Six metabolites were identified with the possible metabolic processes proposed. Hydrolysis may be the main metabolic pathways. The relative contents of CP-6 and its metabolites were determined using their extractive ion chromatograms. The results show that the relative content of CP-6 is rapidly decreased about 15% during the first 0.5 h and generally stable after 0.5 h. The mainly produced metabolites are catalpol penta-propionate (CP-5), catalpol and a spot of catalpol tetra-propionate (CP-4), catalpol tri-propionate (CP-3), catalpol dipropionate (CP-2) and catalpol propionate (CP-1). The metabolitic process of CP-6 may be an hydrolysis under acid conditions. The research results can provide useful information for development and utilization of CP-6 as a pharmaceutical preparation.
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Affiliation(s)
- Xiaodong Cheng
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China
| | - Qiuxia Zhang
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China
- School of Chemical and Environmental Engineering, Pingdingshan University, Pingdingshan, China
| | - Zhenxing Li
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China
| | - Chunhong Dong
- Henan University of Chinese Medicine, Zhengzhou, China
| | - Shiqing Jiang
- Henan University of Chinese Medicine, Zhengzhou, China
| | - Yu-an Sun
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China
| | - Guoqing Wang
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China
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18
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Liu P, Wu X, Liu H, Wang H, Lu K, Gao S. Desorption of pharmaceuticals from pristine and aged polystyrene microplastics under simulated gastrointestinal conditions. J Hazard Mater 2020; 392:122346. [PMID: 32097859 DOI: 10.1016/j.jhazmat.2020.122346] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 02/15/2020] [Accepted: 02/17/2020] [Indexed: 06/10/2023]
Abstract
Microplastics (MPs) in the environment usually undergo extensive weathering and can transport pollutants to organisms once being ingested. However, the transportation mechanism and effect of aging process are poorly understood. This study systematically investigated the desorption mechanisms of pharmaceuticals from pristine and aged polystyrene (PS) MPs under simulated gastric and intestinal conditions of marine organisms. Results showed that the increased desorption in stomach mainly depended on the solubilization of pepsin to pharmaceuticals and the competition for sorption sites on MPs via π-π and hydrophobic interactions. However, high desorption in gut relied on the solubilization of intestinal components (i.e. bovine serum albumin (BSA) and bile salts (NaT)) and the competitive sorption of NaT since the enhanced solubility increased the partition of pharmaceuticals in aqueous phase. Aging process suppressed the desorption of pharmaceuticals because aging decreased hydrophobic and π-π interactions but increased electrostatic interaction between aged MPs and pharmaceuticals, which became less affected by gastrointestinal components. Risk assessment indicated that the MP-associated pharmaceuticals posed low risks to organisms, and warm-blooded organisms suffered relatively higher risks than cold-blooded ones. This study reveals important information to understand the ecological risks of co-existed MPs and pollutants in the environment.
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Affiliation(s)
- Peng Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210093, China
| | - Xiaowei Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210093, China
| | - Haiyong Liu
- Shandong Province Metallurgical Engineering Co. Ltd., Jinan, 250101, China
| | - Hanyu Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210093, China
| | - Kun Lu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210093, China
| | - Shixiang Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210093, China.
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19
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Hamed R, Kamal A, Alkilani AZ. Gelation and rheological characterization of Carbopol® in simulated gastrointestinal fluid of variable chemical properties. Pak J Pharm Sci 2020; 33:923-928. [PMID: 33191214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Carbopol® is a hydrophilic polymer commonly used in the preparation of oral controlled-release matrix tablets. These matrices are subjected to dissolution testing to investigate the rate and mechanism of drug release. The rate of drug release from these matrices is influenced by the viscoelastic properties of the gel layer formed upon hydration and surrounded tablet core. This study evaluates the gelation behavior and rheological characterization of Carbopol® in dispersion media, of varied chemical properties, commonly used in dissolution testing. The rheological properties of Carbopol® polymer underwent gelation were determined using a controlled-stress rheometer. Carbopol® gelation was not found in simulated gastric fluid of low pH (1.2-5.0) and simulated intestinal fluid of pH (5.0-6.5) during fasted (Fa) and fed (Fe) conditions. However, in water and at high pH (6.8-7.8), gelation occurred in phosphate buffers of high buffering capacity (β). Furthermore, no gelation was found in sodium chloride solutions of different ionic strengths (µ). These results highlight the importance of investigating the gelation behavior and rheological characterization of Carbopol® in dispersion media prior to dissolution testing. These preliminary studies can give an insight on the formation/absence of the gel layer around Carbopol® matrices which is responsible for controlling the release of drugs.
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Affiliation(s)
- Rania Hamed
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, Amman, Jordan
| | - Areej Kamal
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, Amman, Jordan
| | - Ahlam Zaid Alkilani
- Department of Pharmacy, Faculty of Pharmacy, Zarqa University, Zarqa, Jordan
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20
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Fan Y, Chen H, Huang Z, Zhu J, Wan F, Peng T, Pan X, Huang Y, Wu C. Taste-masking and colloidal-stable cubosomes loaded with Cefpodoxime proxetil for pediatric oral delivery. Int J Pharm 2020; 575:118875. [PMID: 31765781 DOI: 10.1016/j.ijpharm.2019.118875] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 11/06/2019] [Accepted: 11/12/2019] [Indexed: 11/18/2022]
Abstract
Drug administration failure has been often witnessed in pediatric due to children's resistance to take medicines with bitter taste. Taste-masking is the key requirement among the scanty drugs available for children. Solid taste-masking systems, such as tablets and capsules, are difficult to swallow for children. Therefore, a liquid taste-masking system based on lyotropic liquid crystalline nanoparticles (LLCNs) was developed in this study. Cefpodoxime proxetil (CFP), a typically bitter drug used as antibiotic in pediatric, was selected as the model drug, and the encapsulation of CFP into the LLCNs was envisaged to improve their taste. Pluronic F127 was added to improve the colloidal stability of CFP-LLCNs. The optimized CFP-LLCNs showed the particle size of 187.29 ± 4.12 nm and the encapsulation efficiency of 85.80%. The mesophase analysis by polarized light microscopy and small angle X-ray scattering confirmed the cubic phase of CFP-LLCNs. It showed a sustained-release profile well fitted to Higuchi model, indicating that diffusion and erosion were both responsible for the CFP release. The taste-masking ability of CFP-LLCNs was confirmed by electronic tongue, compared to CFP and commercial product. The colloidal stability was verified after 3 months storage in room condition (25 ± 2 °C, 70 ± 2%RH). To sum up, the taste-masking and colloidal-stable CFP-LLCNs showed great potential for pediatric oral delivery.
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Affiliation(s)
- Yanliang Fan
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, Guangdong, PR China.
| | - Hsinyi Chen
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, Guangdong, PR China
| | - Zhengwei Huang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, Guangdong, PR China.
| | - Jianzheng Zhu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, Guangdong, PR China
| | - Faiiam Wan
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, Guangdong, PR China
| | - Tingting Peng
- College of Pharmacy, Jinan University, Guangzhou 510632, Guangdong, PR China
| | - Xin Pan
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, Guangdong, PR China.
| | - Ying Huang
- College of Pharmacy, Jinan University, Guangzhou 510632, Guangdong, PR China.
| | - Chuanbin Wu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, Guangdong, PR China.
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21
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Hadipour Moghaddam SP, Mohammadpour R, Ghandehari H. In vitro and in vivo evaluation of degradation, toxicity, biodistribution, and clearance of silica nanoparticles as a function of size, porosity, density, and composition. J Control Release 2019; 311-312:1-15. [PMID: 31465825 PMCID: PMC6874921 DOI: 10.1016/j.jconrel.2019.08.028] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 08/23/2019] [Accepted: 08/25/2019] [Indexed: 12/19/2022]
Abstract
Silica nanoparticles (SiO2 NPs) have potential utility in controlled release. Despite significant research in this area, there is a gap in the understanding of the correlation between SiO2 NP physicochemical properties on the one hand and their degradation in solutions, in cells, and in vivo on the other. Here, we fabricated SiO2 NPs with variations in size, porosity, density, and composition: 100 nm Stöber, 100 and 500 nm mesoporous, 100 nm disulfide-based mesoporous, and 100 nm disulfide-based hollow mesoporous. Degradation profiles over 28 days were investigated in simulated biological fluids and deionized water. Results show Meso 100, and 500 nanoparticles degraded faster at higher pH values. Results from macrophages indicate Meso 100 nanoparticles showed the highest degradation amount (~3.8%). Cytotoxicity evaluation of the particles in Human Aortal Endothelial Cells (HAECs) shows concentration-dependent toxicity for the particles. Results from CD-1 mice show ~53% of Meso 100 nanoparticles (25 mg kg-1) degraded and were detected in urine after seven days. It was shown nanoparticle porosity and composition as well as pH and ionic strength of the medium play the predominant roles for degradation of SiO2 NPs. Based on histological evaluations, at the injected doses investigated, the particles did not show toxicity.
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Affiliation(s)
- Seyyed Pouya Hadipour Moghaddam
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT 84112, USA; Utah Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, UT 84112, USA
| | - Raziye Mohammadpour
- Utah Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, UT 84112, USA
| | - Hamidreza Ghandehari
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT 84112, USA; Utah Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, UT 84112, USA; Department of Bioemedical Engineering, University of Utah, Salt Lake City, UT 84112, USA.
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22
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Somaratne G, Reis MM, Ferrua MJ, Ye A, Nau F, Floury J, Dupont D, Singh RP, Singh J. Mapping the Spatiotemporal Distribution of Acid and Moisture in Food Structures during Gastric Juice Diffusion Using Hyperspectral Imaging. J Agric Food Chem 2019; 67:9399-9410. [PMID: 31304753 DOI: 10.1021/acs.jafc.9b02430] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This study investigated the feasibility of using hyperspectral imaging (HSI) to characterize the diffusion of acid and water within food structures during gastric digestion. Two different sweet potatoes (steamed and fried) and egg white gel (pH5 and pH9 EWGs) structures were exposed to in vitro gastric digestion before scanning by HSI. Afterward, the moisture or acid present in the digested sample was analyzed for calibration purposes. Calibration models were subsequently built using partial least-squares (PLS). The PLS models indicated that the full-wavelength spectral range (550-1700 nm) had a good ability to predict the spatial distribution of acid (Rcal2 > 0.82) and moisture (Rcal2 > 0.88). The spatiotemporal distributions of moisture and acid were mapped across the digested food, and they were shown to depend on the food composition and structure. The kinetic data revealed that the acid and moisture uptakes are governed by Fickian diffusion or by both diffusion and erosion-controlled mechanisms.
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Affiliation(s)
- Geeshani Somaratne
- Riddet Institute , Massey University , Palmerston North , 4442 , New Zealand
- School of Food and Advanced Technology , Massey University , Palmerston North , 4442 , New Zealand
| | - Marlon M Reis
- Food & Biobased Products , AgResearch Limited , Palmerston North , 4442 , New Zealand
| | - Maria J Ferrua
- Riddet Institute , Massey University , Palmerston North , 4442 , New Zealand
- Fonterra Research and Development Centre , Palmerston North , 4442 , New Zealand
| | - Aiqian Ye
- Riddet Institute , Massey University , Palmerston North , 4442 , New Zealand
| | - Francoise Nau
- STLO, INRA , AGROCAMPUS OUEST , 35042 , Rennes , France
| | | | - Didier Dupont
- STLO, INRA , AGROCAMPUS OUEST , 35042 , Rennes , France
| | - R Paul Singh
- Riddet Institute , Massey University , Palmerston North , 4442 , New Zealand
- University of California , Davis , California United States
| | - Jaspreet Singh
- Riddet Institute , Massey University , Palmerston North , 4442 , New Zealand
- School of Food and Advanced Technology , Massey University , Palmerston North , 4442 , New Zealand
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Jovanović AA, Balanč BD, Djordjević VB, Ota A, Skrt M, Šavikin KP, Bugarski BM, Nedović VA, Ulrih NP. Effect of gentisic acid on the structural-functional properties of liposomes incorporating β-sitosterol. Colloids Surf B Biointerfaces 2019; 183:110422. [PMID: 31437609 DOI: 10.1016/j.colsurfb.2019.110422] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 07/08/2019] [Accepted: 08/02/2019] [Indexed: 01/15/2023]
Abstract
Multifunctional liposomes incorporating β-sitosterol were developed for delivery of gentisic acid (GA). The interactions of both compounds with phospholipid bilayer were interpreted viaeffects of different β-sitosterol content (0, 20 and 50 mol %) and different gentisic acid to lipid ratio (nGA/nlip from 10-5 to 1) on membrane fluidity and thermotropic properties. Multilamellar vesicles of phosphatidylcholines (with size range between 1350 and 1900 nm) effectively encapsulated GA (54%) when nGA/nlip was higher than 0.01. Suppression of lipid peroxidation was directly related to concentration of GA. The resistance to diffusion of gentisic acid from liposomes increased for ˜50% in samples incorporating 50 mol % β-sitosterol compared to sterol-free liposomes. Finally, simulated in vitro gastrointestinal conditions showed that the release was mainly affected by low pH of simulated gastric fluid and the presence of cholates in simulated intestinal fluid, rather than by enzymes activity.
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Affiliation(s)
- Aleksandra A Jovanović
- Department of Chemical Engineering, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Bojana D Balanč
- Department of Chemical Engineering, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Verica B Djordjević
- Department of Chemical Engineering, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Ajda Ota
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia
| | - Mihaela Skrt
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia
| | - Katarina P Šavikin
- Institute for Medicinal Plant Research "Dr Josif Pančić", Tadeuša Košćuška 1, 11000 Belgrade, Serbia
| | - Branko M Bugarski
- Department of Chemical Engineering, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Viktor A Nedović
- Department of Food Technology and Biochemistry, Faculty of Agriculture, University of Belgrade, Nemanjina 6, 11080 Belgrade, Serbia
| | - Nataša Poklar Ulrih
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia.
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24
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Fernández-Poyatos MP, Ruiz-Medina A, Llorent-Martínez EJ. Phytochemical profile, mineral content, and antioxidant activity of Olea europaea L. cv. Cornezuelo table olives. Influence of in vitro simulated gastrointestinal digestion. Food Chem 2019; 297:124933. [PMID: 31253274 DOI: 10.1016/j.foodchem.2019.05.207] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 05/10/2019] [Accepted: 05/31/2019] [Indexed: 12/31/2022]
Abstract
The main goals of this study were to determine the phenolic composition and antioxidant activity of table olives from Olea europaea L. cv. Cornezuelo, as well as the effect caused by a simulated in vitro digestion to evaluate compounds bioavailability. High-performance liquid chromatography with diode-array and mass spectrometry detection (HPLC-DAD-MSn) was used to evaluate the phytochemical profile, whereas conventional spectrophotometric methods (ABTS·+ and DPPH) were used to determine the antioxidant activity. The mineral content was also quantified by inductively coupled plasma - mass spectrometry. Thirty compounds were identified, mainly polyphenols, quantifying the major compounds by HPLC-DAD. After the simulated digestion, the phenolic content suffered an important decrease - more than 50% - reaching losses of up to 75% for oleuropein and comselogoside isomers. This decrease also resulted in a loss of antioxidant activity, observing significant differences for all parameters. However, the analyzed extracts still retained considerable antioxidant potential.
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Affiliation(s)
- M P Fernández-Poyatos
- Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, University of Jaén, Campus Las Lagunillas, E-23071 Jaén, Spain
| | - A Ruiz-Medina
- Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, University of Jaén, Campus Las Lagunillas, E-23071 Jaén, Spain
| | - E J Llorent-Martínez
- Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, University of Jaén, Campus Las Lagunillas, E-23071 Jaén, Spain.
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25
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Elikem E, Laird BD, Hamilton JG, Stewart KJ, Siciliano SD, Peak D. Effects of chemical speciation on the bioaccessibility of zinc in spiked and smelter-affected soils. Environ Toxicol Chem 2019; 38:448-459. [PMID: 30525224 DOI: 10.1002/etc.4328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 10/12/2018] [Accepted: 12/03/2018] [Indexed: 06/09/2023]
Abstract
Previous studies have suggested that understanding soil metal speciation, rather than relying solely on total metal content, can improve the accuracy and utility of contaminated site risk assessments. Because soil properties and reaction time can alter metal speciation, speciation should influence metal bioaccessibility. For example, under gastrointestinal conditions, it is expected that metal species will differ in bioaccessibility depending on their stability in acidic pH environments. We studied the links between metal speciation and bioaccessibility. A combination of synchrotron-based X-ray diffraction and X-ray absorption near edge structure (XANES) was used to identify the zinc (Zn) speciation in spiked and smelter-affected soils. After conducting in vitro digestion tests on the soil samples, XANES and linear combination fitting were carried out on the residual pellets to identify the species of Zn that remained after digesting the soils in the simulated gastric and duodenal fluids. The metal species that were not present in the residual pellets were inferred to have been dissolved and, thus, more bioaccessible. Sphalerite (ZnS), ZnO, and outer-sphere Zn contributed more to Zn bioaccessibility than franklinite (ZnFe2 O4 ) and Zn incorporated into a hydroxy interlayer mineral (Zn-HIM). The bioaccessibility of Zn-aluminum layered double hydroxides (Zn-Al-LDH) was found to be inversely proportional to its residence time in soil. It was also observed that the relatively high pH of the duodenum favors metal reprecipitation and readsorption, leading to a reduction in bioaccessible metal concentration. These results imply that metal speciation mainly controls metal bioaccessibility. Environ Toxicol Chem 2019;38:448-459. © 2018 SETAC.
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Affiliation(s)
- Essouassi Elikem
- Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Brian D Laird
- School of Public Health and Health Systems, University of Waterloo, Waterloo, Ontario, Canada
| | - Jordan G Hamilton
- Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Katherine J Stewart
- Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Steven D Siciliano
- Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Derek Peak
- Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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26
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Baloch MN, Siddiqui R, Asad W, Saeed A, Haider F. Probiotic potential of novel strains of Lactobacillus plantarum Lp -1: In vitro studies. Pak J Pharm Sci 2019; 32:445-452. [PMID: 30852483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Five Lactobacillus strains isolated from vegetable and dairy products showed 99% similarity with Lactobacillus plantarum 1(Lp-1) using API -CHL 50 kit. Most of them proved to be sensitive to bacterial cell-wall inhibitors i.e. penicillin, ampicillin, amoxicillin and methicillin as studied by disc-diffusion method. These strains manifested profound tolerance to acidic-stress where Lp86 and Lp36 exhibited a good survival pattern at pH-2 for 4 hr retaining a survival count of 85% and 50%, respectively. A high survival of 85.7% was witnessed in Lp86 in presence of protease while Lp36 maintained 94.55% and 92.65% of population under the influence of enzyme pancreatin and pepsin. All the strains displayed marked tolerance against trypsin as the count did not drop below 77%. Absorbance and growth in terms of cfu/ml for bile-tolerance was examined for concentrations reflecting those in the GIT of humans, all the Lp-1 strains when grown with 1% bile showed a drop in the viable count by 1 log cycle i.e. from 1010 to 109cfu/ml. Fulfilling the above mentioned criteria these probiotic candidates displayed their capacity to reach the colon as viable metabolically active cells after successfully surviving under conditions similar to the gastrointestinal tract of humans. Upon examining the viability and stability of these probiotic candidates in most common foods serving as vehicle for probiotic delivery to the intestine, it was noticed that all the isolates tested sustained a probiotic approved number of 107 cfu/ml for effective function as recommended by WHO, after a maximum storage for one month. Hence, it could be justified that the selected probiotic candidates possess prominent probiotic potential. Therefore, L. plantarum 1 strains could prove to be an efficient probiotic after further in vivo studies to explore its safety in human subjects.
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Affiliation(s)
| | - Roquya Siddiqui
- Department of Microbiology, University of Karachi, Karachi, Pakistan
| | - Wajeeha Asad
- Department of Microbiology, University of Karachi, Karachi, Pakistan
| | - Asma Saeed
- Department of Microbiology, University of Karachi, Karachi, Pakistan
| | - Fouzia Haider
- Department of Microbiology, University of Karachi, Karachi, Pakistan
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27
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Van Hecke T, Basso V, De Smet S. Lipid and Protein Oxidation during in Vitro Gastrointestinal Digestion of Pork under Helicobacter pylori Gastritis Conditions. J Agric Food Chem 2018; 66:13000-13010. [PMID: 30411892 DOI: 10.1021/acs.jafc.8b04335] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Helicobacter pylori gastritis affects gastric pH and concentrations of ascorbic acid, hydrogen peroxide, hypochlorite, ammonia and urea, pepsin, and mucin. First, the separate effects of each of these altered factors on oxidation of pork were investigated during in vitro gastrointestinal digestion. Lipid and protein oxidation increased (range 23-48%) in duodenal digests of pork previously exposed to elevated (6.1) versus normal acidic stomach pH (2.3 to 3.5) conditions. Salivary nitrite reduced the formation of lipid and protein oxidation products (range 14-20%) under normal acidic but not elevated stomach pH conditions. Higher amounts of hydrogen peroxide and lower amounts of ascorbic acid decreased concentrations of lipid oxidation products in duodenal pork digests, whereas ammonia slightly stimulated protein oxidation during digestion. Second, two H. pylori gastritis-duodenal digestion models were installed using a set of altered compound concentrations at normal acidic or elevated stomach pH. The elevated pH-gastritis-duodenal digestion model increased pork protein oxidation compared with the normal pH-gastritis and the normal digestion model (14.3 ± 2.1 vs 8.2 ± 1.0 nmol DNPH/mg protein, P < 0.001). Compared with the other models, protein oxidation was also increased when nitrite-cured pork was exposed to the elevated pH-gastritis-duodenal digestion model (10.8 ± 1.4 vs 5.9 ± 0.8 nmol DNPH/mg protein, P < 0.001), but no significant effect of the model was observed when the pork was seasoned with herbs. Lipid oxidation was not or was marginally affected by the installed model.
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Affiliation(s)
- Thomas Van Hecke
- Laboratory for Animal Nutrition and Animal Product Quality, Department of Animal Sciences and Aquatic Ecology , Ghent University , Coupure Links 653 , B-9000 Ghent , Belgium
| | - Veronica Basso
- Laboratory for Animal Nutrition and Animal Product Quality, Department of Animal Sciences and Aquatic Ecology , Ghent University , Coupure Links 653 , B-9000 Ghent , Belgium
| | - Stefaan De Smet
- Laboratory for Animal Nutrition and Animal Product Quality, Department of Animal Sciences and Aquatic Ecology , Ghent University , Coupure Links 653 , B-9000 Ghent , Belgium
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28
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Gao P, Guo H, Zhang Z, Ou C, Hang J, Fan Q, He C, Wu B, Feng Y, Xing B. Bioaccessibility and exposure assessment of trace metals from urban airborne particulate matter (PM 10 and PM 2.5) in simulated digestive fluid. Environ Pollut 2018; 242:1669-1677. [PMID: 30077404 DOI: 10.1016/j.envpol.2018.07.109] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 07/18/2018] [Accepted: 07/23/2018] [Indexed: 05/17/2023]
Abstract
We describe a batch-extraction with simulated digestive fluid (salivary fluid, gastric fluid and intestinal fluid) to estimate the bioaccessibility of inhaled trace metals (TMs) in particulate matter less than 10 and 2.5 μm in aerodynamic diameter (PM10 and PM2.5). Concentrations of the assayed TMs (As, Cd, Cr, Ni, Mn, Cu, Zn, Sb, Hg and Pb) were determined in PM10 and PM2.5 samples by inductively coupled plasma-mass spectrometry. The TMs with the largest soluble fractions for airborne PM collected from winter and summer in saliva were Mn and Sb, respectively; in seasons this became Co in gastric fluid and Cu in intestinal fluid. Clearly, bioaccessibility is strongly dependent on particle size, the component of simulated digestive fluids (e.g., pH, digestive enzymes pepsin and trypsin), and the chemical properties of metal ions. The particle size and seasonal variation affected the inhaled bioaccessible fraction of PM-bound TMs during mucociliary clearance, which transported PM from the tracheal and the bronchial region to the digestive system. This study provides direct evidence for TMs in airborne PM being bioaccessible TMs are likely to possess an enhanced digestive toxic potential due to airborne PM pollution.
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Affiliation(s)
- Peng Gao
- Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Huiyuan Guo
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, USA
| | - Zhaohan Zhang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Cuiyun Ou
- Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Jian Hang
- Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Qi Fan
- Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Chuan He
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Bing Wu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Yujie Feng
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China.
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, USA.
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29
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Kayamba V, Zyambo K, Kelly P. Presence of blood in gastric juice: A sensitive marker for gastric cancer screening in a poor resource setting. PLoS One 2018; 13:e0205185. [PMID: 30321216 PMCID: PMC6188746 DOI: 10.1371/journal.pone.0205185] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 08/28/2018] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Gastric cancer survival rates in Africa are low as many cases are diagnosed late. Currently, there are no inexpensive, non-invasive and simple techniques that can be employed in poor resource settings for early case detection. In this study, we explored the possibility using blood in gastric juice as a screening tool to identify patients requiring referral for endoscopy. METHODS The study was conducted at the University Teaching Hospital endoscopy unit in Lusaka, Zambia. During esophagogastroduodenoscopy, gastric juice was aspirated and the pH determined using pH paper test strips. The presence of blood was tested using urinalysis reagent strips. RESULTS We enrolled 276 patients; 147(53%) were female and median age was 49 years (IQR 40-64 years). The presence of blood was associated with mucosal lesions, [OR 2.1; 95% CI 1.2-3.7, P = 0.004]. It was also associated with gastric cancer, [OR 6.7; 95% CI 2-35, P = 0.0005], even at 1:10 and 1:100 dilutions, [OR 5.4; 95% CI 2.3-13.8, P<0.0001] and [OR 9.1; 95% CI 3.5-23, P<0.0001] respectively. The sensitivity for gastric cancer detection using blood in gastric juice was 91% and the specificity was 41%. Analysis using the intensity of blood in gastric juice yielded an area under the receiver operating characteristic curve of 0.78; 95% CI 0.71-0.86 with a sensitivity of 79% and a specificity of 77%. CONCLUSIONS The presence of blood in gastric juice is associated with gastric mucosal lesions. It has a high sensitivity but low specificity for gastric cancer detection.
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Affiliation(s)
- Violet Kayamba
- Tropical Gastroenterology & Nutrition group, Department of Internal Medicine, University of Zambia School of Medicine, Lusaka, Zambia
| | - Kanekwa Zyambo
- Tropical Gastroenterology & Nutrition group, Department of Internal Medicine, University of Zambia School of Medicine, Lusaka, Zambia
| | - Paul Kelly
- Tropical Gastroenterology & Nutrition group, Department of Internal Medicine, University of Zambia School of Medicine, Lusaka, Zambia
- Blizard Institute, Barts & The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
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30
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Gao B, Wang R, Peng Y, Li X. Effects of a homogeneous polysaccharide from Sijunzi decoction on human intestinal microbes and short chain fatty acids in vitro. J Ethnopharmacol 2018; 224:465-473. [PMID: 29890316 DOI: 10.1016/j.jep.2018.06.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 06/04/2018] [Accepted: 06/07/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Sijunzi decoction (SJZD) is a classic recipe in traditional Chinese medicine (TCM) to strengthen the spleen and replenish Qi. It is well known for treating disorders of gastrointestinal function manifested in poor appetite, reduced food intake and loose stools. Polysaccharide is the most abundant constituent and the major effective component in SJZD. AIM OF THE STUDY The present study aimed to understand the immunomodulatory mechanism of S-3-1, a homogeneous polysaccharide purified from SJZD with immune-enhancement activity, by investigating its effects on human intestinal microbes and short chain fatty acids. MATERIALS AND METHODS S-3-1 was incubated with simulated gastric juice, intestinal juice, and human fecal microflora independently and sequentially. The concentrations of total polysaccharide and reducing sugar were measured to identify the stability of independently and sequentially incubated S-3-1 in three in vitro fermentation models. Gas chromatograph (GC) analysis was used to measure the short chain fatty acid (SCFA) contents in human fecal samples. The human gut microbiota composition was measured by 16S rRNA gene Illumina MiSeq sequencing (V3-V4 region). RESULTS S-3-1 was degraded in three in vitro fermentation models separately and sequentially. Both S-3-1 and incubated S-3-1 could regulate the abundances of Lactobacillus, Pediococcus, Streptococcus, Bacteroides, Enterococcus, Clostridium and Dorea in human intestinal microflora samples. Specifically, S-3-1 could only regulate the abundances of Paraprevotella and Oscillospira, while the influenced flora changed to Butyricimonas, Coprococcus, Dialister, Sutterella, Ruminococcus and Parabacteroides after sequential incubation of S-3-1. In contrast to S-3-1 showing no influence on the content of SCFA, incubated S-3-1 showed increased contents of acetic acid and total acid that were associated with its effects on the abundances of Enterococcus, Sutterella, Butyricimonas and Streptococcus. CONCLUSION S-3-1 plays an immunomodulatory role by regulating the abundances of 9 intestinal bacteria genera. Incubated S-3-1 can regulate more bacteria genera, a total of 13 kinds, and can adjust the SCFA content to affect immunomodulation. Incubation with gastric and intestinal juices enhanced S-3-1's capability of modulating the intestinal flora composition and decreased the bacteria's need for a carbon source. This study could provide new insights for studies on the pharmacological mechanisms of polysaccharides in vitro.
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Affiliation(s)
- Beibei Gao
- School of Pharmacy, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Minhang District, Shanghai 200240, China
| | - Ruijun Wang
- School of Pharmacy, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Minhang District, Shanghai 200240, China
| | - Ying Peng
- School of Pharmacy, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Minhang District, Shanghai 200240, China
| | - Xiaobo Li
- School of Pharmacy, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Minhang District, Shanghai 200240, China.
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Sohal IS, Cho YK, O'Fallon KS, Gaines P, Demokritou P, Bello D. Dissolution Behavior and Biodurability of Ingested Engineered Nanomaterials in the Gastrointestinal Environment. ACS Nano 2018; 12:8115-8128. [PMID: 30021067 DOI: 10.1021/acsnano.8b02978] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Engineered nanomaterials (ENM) are extensively used as food additives in numerous food products, and at present, little is known about the fate of ingested ENM (iENM) in the gastrointestinal (GI) environment. Here, we investigated the dissolution behavior, biodurability, and persistence of four major iENM (TiO2, SiO2, ZnO, and two Fe2O3) in individual simulated GI fluids (saliva, gastric, and intestinal) and a physiologically relevant digestion cascade (saliva → gastric → intestinal) in the fasted state over physiologically relevant time frames. TiO2 was found to be the most biodurable and persistent iENM in simulated GI fluids with a maximum of only 0.42% (4 μM Ti4+ ion release) dissolution in cascade digestion, followed by iron oxides, of which the rod-like morphology was more biodurable and persistent (0.7% maximum dissolution, 8.7 μM Fe3+) than the acicular one (2.27% maximum dissolution, 16.7 μM Fe3+) in the cascade digestion, respectively. SiO2 and ZnO were less biodurable than Fe2O3, with 65.5% (416 μM Si4+) and 100% (1718.1 μM Zn2+) dissolution in the gastric phase, respectively. In the intestinal phase, however, Si4+ ions reprecipitated, possibly due to sudden pH changes, while ZnO remained completely dissolved. These observations were also confirmed using high-resolution particle size and concentration, and electron microscopy, time-dependent analysis. In terms of decreasing biodurability and persistence in the simulated GI environment, the tested nanomaterials can be ranked as follows: TiO2 ≫ rod-like Fe2O3 > acicular Fe2O3 ≫ SiO2 > ZnO, which is in agreement with limited animal biokinetics data. Chronic uptake of these iENM as particles or ions by the GI tract, especially in the presence of a food matrix and authentic digestive media, and associated implications for human health warrants further investigation.
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Affiliation(s)
| | | | - Kevin S O'Fallon
- Development and Engineering Center , Natick Soldier Research , Natick , Massachusetts 01760 , United States
| | | | - Philip Demokritou
- Department of Environmental Health and the Harvard Center for Nanotechnology and Nanotoxicology, Harvard T. H. Chan School of Public Health , Harvard University , Boston , Massachusetts 02115 , United States
| | - Dhimiter Bello
- Department of Environmental Health and the Harvard Center for Nanotechnology and Nanotoxicology, Harvard T. H. Chan School of Public Health , Harvard University , Boston , Massachusetts 02115 , United States
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Zheng Z, Zhang M, Xiao Y, Wei L, Li C. Effect of Cys, GSH, and pH on Mercury Release from Tibetan Medicine Zuotai, β-HgS, and α-HgS in Artificial Gastrointestinal Juices. Biol Trace Elem Res 2018; 184:536-545. [PMID: 29130128 DOI: 10.1007/s12011-017-1185-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 10/02/2017] [Indexed: 10/18/2022]
Abstract
Zuotai, also named as "gTso thal", a known Tibetan medicinal mixture containing insoluble cubic crystal mercuric sulfide (β-HgS), has been used to treat diseases with long history. The mercury release ratio from Zuotai in gastrointestinal environment is one determinant factor for its bioavailability and biological effect. However, the information is still scarce now. Therefore, the study was designed to investigate the effect of sulfhydryl biomolecules [L-cysteine (Cys) and glutathione (GSH)] and pH on mercury dissociation from Zuotai, β-HgS, and hexagonal crystal mercuric sulfide (α-HgS) in artificial gastrointestinal juices or pure water with a 1:100 solid-liquid ratio. And, the digestion and peristalsis of gastrointestinal tract were simulated in vitro. The results showed the following trend for the mercury release ratio of Zuotai, artificial gastric juice > artificial intestinal juice > pure water, whereas the trend for β-HgS and α-HgS was as follows, artificial intestinal fluid > artificial gastric fluid > pure water. The mercury release ratios of Zuotai, β-HgS, and α-HgS significantly increased in artificial intestinal juice containing L-Cys or GSH compared to those without sulfhydryl biomolecules in the juice. However, in contrast to the results observed for β-HgS and α-HgS, the mercury release ratio of Zuotai was reduced remarkably in pure water and artificial gastric juice with Cys or GSH. And, we found that strong acidic or strong alkaline environments promoted the dissociation of mercury from Zuotai, β-HgS, and α-HgS. Taken together, current findings may contribute to other studies regarding clinical safety and bioavailability of the traditional drug Zuotai containing β-HgS.
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Affiliation(s)
- Zhiyuan Zheng
- Qinghai Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xinning Road 23, Xining, Qinghai, 810008, China
- University of Chinese Academy of Sciences, Beijing, 100047, China
| | - Ming Zhang
- Qinghai Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xinning Road 23, Xining, Qinghai, 810008, China
- University of Chinese Academy of Sciences, Beijing, 100047, China
| | - Yuancan Xiao
- Qinghai Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xinning Road 23, Xining, Qinghai, 810008, China
- Key Laboratory of Tibetan Medicine Research, Chinese Academy of Sciences, Xining, Qinghai, 810008, China
| | - Lixin Wei
- Qinghai Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xinning Road 23, Xining, Qinghai, 810008, China.
- Key Laboratory of Tibetan Medicine Research, Chinese Academy of Sciences, Xining, Qinghai, 810008, China.
| | - Cen Li
- Qinghai Key Laboratory of Tibetan Medicine Pharmacology and Safety Evaluation, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xinning Road 23, Xining, Qinghai, 810008, China.
- Key Laboratory of Tibetan Medicine Research, Chinese Academy of Sciences, Xining, Qinghai, 810008, China.
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Gartziandia O, Lasa A, Pedraz JL, Miranda J, Portillo MP, Igartua M, Hernández RM. Preparation and Characterization of Resveratrol Loaded Pectin/Alginate Blend Gastro-Resistant Microparticles. Molecules 2018; 23:molecules23081886. [PMID: 30060551 PMCID: PMC6222721 DOI: 10.3390/molecules23081886] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 07/24/2018] [Accepted: 07/27/2018] [Indexed: 11/24/2022] Open
Abstract
Background: The use of resveratrol as a dietary supplement is limited because it is easily oxidized and, after oral ingestion, it is metabolized into enterocytes and hepatocytes. Thus, new formulations are needed in order to improve its oral bioavailability. Objective: The objective of this study was to develop and characterize a gastro-resistant formulation of resveratrol for oral administration as a dietary supplement. Method: Resveratrol was encapsulated in Eudragit-coated pectin-alginate microparticles. Results: The microparticle size was about 1450 µm, with an encapsulation efficiency of 41.72% ± 1.92%. The dissolution assay conducted, as specified in the European Pharmacopoeia for delayed-release dosage forms, revealed that our microparticles were gastro-resistant, because the resveratrol percentage released from microparticles in acid medium was less than 10%. In addition, the high-performance liquid chromatographic (HPLC) method developed for resveratrol content quantification in the microparticles was validated according to International Council for Harmonisation (ICH) Q2 (R1) guidelines. Finally, the biological activity of resveratrol was investigated in 3T3-L1 mature adipocytes, concluding that the encapsulation process does not affect the activity of resveratrol. Conclusion: In summary, the gastro-resistant microparticles developed could represent a suitable method of including resveratrol in dietary supplements and in functional foods used in obesity therapy.
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Affiliation(s)
- Oihane Gartziandia
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz 01006, Spain.
- Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz 01006, Spain.
| | - Arrate Lasa
- Nutrition and Obesity Group, Department of Nutrition and Food Science, Faculty of Pharmacy and Lucio Lascaray Research Institute, University of País Vasco (UPV/EHU), Vitoria-Gasteiz 01006, Spain.
- CIBEROBN Physiopathology of Obesity and Nutrition, Institute of Health Carlos III (ISCIII), Vitoria-Gasteiz 01006, Spain.
| | - Jose Luis Pedraz
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz 01006, Spain.
- Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz 01006, Spain.
| | - Jonatan Miranda
- Nutrition and Obesity Group, Department of Nutrition and Food Science, Faculty of Pharmacy and Lucio Lascaray Research Institute, University of País Vasco (UPV/EHU), Vitoria-Gasteiz 01006, Spain.
- CIBEROBN Physiopathology of Obesity and Nutrition, Institute of Health Carlos III (ISCIII), Vitoria-Gasteiz 01006, Spain.
| | - Maria Puy Portillo
- Nutrition and Obesity Group, Department of Nutrition and Food Science, Faculty of Pharmacy and Lucio Lascaray Research Institute, University of País Vasco (UPV/EHU), Vitoria-Gasteiz 01006, Spain.
- CIBEROBN Physiopathology of Obesity and Nutrition, Institute of Health Carlos III (ISCIII), Vitoria-Gasteiz 01006, Spain.
| | - Manoli Igartua
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz 01006, Spain.
- Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz 01006, Spain.
| | - Rosa Maria Hernández
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz 01006, Spain.
- Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz 01006, Spain.
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Navarro Del Hierro J, Herrera T, García-Risco MR, Fornari T, Reglero G, Martin D. Ultrasound-assisted extraction and bioaccessibility of saponins from edible seeds: quinoa, lentil, fenugreek, soybean and lupin. Food Res Int 2018; 109:440-447. [PMID: 29803470 DOI: 10.1016/j.foodres.2018.04.058] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 04/03/2018] [Accepted: 04/26/2018] [Indexed: 11/15/2022]
Abstract
The efficient production of saponin-rich extracts is of increasing interest due to the bioactive properties that have being demonstrated for these compounds. However, saponins have a poor bioavailability. In this respect, the knowledge about the bioaccessibility of saponins as a first step before bioavailability has been scarcely explored. In this study, the production of ultrasound-assisted extracts of saponins from edible seeds (quinoa, soybean, red lentil, fenugreek and lupin) was carried out with ethanol, ethanol:water or water. Extraction yield, total saponin (TSC), fat and total phenolics content (TPC) were determined. Then, the bioaccessibility of saponins after the in vitro gastrointestinal digestion of the extracts was determined and the effect of TPC and fat in the extracts on bioaccessibility was evaluated. The highest saponin-rich extracts were obtained by ethanol, being fenugreek and red lentil the richest extracts (12% and 10%, respectively). Saponins from ethanol:water extracts displayed variable bioaccessibility (from 13% for fenugreek to 83% for lentil), but a bioaccessibility closer to 100% was reached for all ethanol extracts. Correlation studies showed that TPC of the extracts negatively affected the bioaccessibility of saponins, whereas fat of the extracts enhanced this parameter. As summary, ultrasound-assisted extraction is shown as an efficient method for obtaining saponin-rich extracts from edible seeds, being ethanol the most advantageous solvent due to the richness of saponins and the successful bioaccessibility from these extracts, likely caused by the co-extracted fat with ethanol. Regardless of the extracts, phenolic compounds or fat may hinder or enhance the bioaccessibility of saponins, respectively. Additionally, an adequate balance between saponins to lipids has shown to be relevant on such an effect.
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Affiliation(s)
- Joaquín Navarro Del Hierro
- Departamento de Producción y Caracterización de Nuevos Alimentos, Instituto de Investigación en Ciencias de la Alimentación (CIAL) (CSIC-UAM), 28049 Madrid, Spain; Sección Departamental de Ciencias de la Alimentación, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Teresa Herrera
- Departamento de Producción y Caracterización de Nuevos Alimentos, Instituto de Investigación en Ciencias de la Alimentación (CIAL) (CSIC-UAM), 28049 Madrid, Spain; Sección Departamental de Ciencias de la Alimentación, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Mónica R García-Risco
- Departamento de Producción y Caracterización de Nuevos Alimentos, Instituto de Investigación en Ciencias de la Alimentación (CIAL) (CSIC-UAM), 28049 Madrid, Spain; Sección Departamental de Ciencias de la Alimentación, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Tiziana Fornari
- Departamento de Producción y Caracterización de Nuevos Alimentos, Instituto de Investigación en Ciencias de la Alimentación (CIAL) (CSIC-UAM), 28049 Madrid, Spain; Sección Departamental de Ciencias de la Alimentación, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Guillermo Reglero
- Departamento de Producción y Caracterización de Nuevos Alimentos, Instituto de Investigación en Ciencias de la Alimentación (CIAL) (CSIC-UAM), 28049 Madrid, Spain; Sección Departamental de Ciencias de la Alimentación, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain; Imdea-Food Institute, CEI UAM+CSIC, 28049 Madrid, Spain
| | - Diana Martin
- Departamento de Producción y Caracterización de Nuevos Alimentos, Instituto de Investigación en Ciencias de la Alimentación (CIAL) (CSIC-UAM), 28049 Madrid, Spain; Sección Departamental de Ciencias de la Alimentación, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
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35
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Albouchi A, Russ J, Murkovic M. Parameters affecting the exposure to furfuryl alcohol from coffee. Food Chem Toxicol 2018; 118:473-479. [PMID: 29842908 DOI: 10.1016/j.fct.2018.05.055] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 05/17/2018] [Accepted: 05/23/2018] [Indexed: 11/17/2022]
Abstract
Recently, furfuryl alcohol (FFA) was labelled a human potential carcinogen (group 2B) by the International Agency for Research on Cancer. Its alimentary exposure is mostly from coffee since in any other foods the concentrations are significantly lower. The various storage conditions of roasted coffee, the different brewing techniques applied and the bioaccessibility after ingestion are potential parameters that might alter the exposure to FFA from coffee. An 8 weeks stability study at varying temperatures showed that FFA is stable in the ground coffee matrix. Moreover, different brewing techniques extracted different amounts of FFA and affected its final concentration. The evaluation of the relative exposure to four furans (FFA, 5-hydroxymethyl-furaldehyde, 2-furoic acid, and 5-hydroxymethyl-2-furoic acid) revealed that FFA amounts were at least 2-fold the amounts of other studied furans in the same brew. A 22-fold variation in the concentration of the four furans in brews prepared using different coffee grounds and brewing techniques could be observed. 90% of the four furans were extracted by the first 25-30% fraction of the filter brew. A significant decrease of FFA is observed after stressing with simulated gastric fluid. However, this decrease could not be reproduced when mimicking a regular coffee ingestion situation.
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Affiliation(s)
- Abdullatif Albouchi
- Institute of Biochemistry, Graz University of Technology, Petersgasse 10-12/II, 8010, Graz, Austria.
| | - Julia Russ
- Institute of Biochemistry, Graz University of Technology, Petersgasse 10-12/II, 8010, Graz, Austria
| | - Michael Murkovic
- Institute of Biochemistry, Graz University of Technology, Petersgasse 10-12/II, 8010, Graz, Austria
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Aponte M, Ungaro F, d'Angelo I, De Caro C, Russo R, Blaiotta G, Dal Piaz F, Calignano A, Miro A. Improving in vivo conversion of oleuropein into hydroxytyrosol by oral granules containing probiotic Lactobacillus plantarum 299v and an Olea europaea standardized extract. Int J Pharm 2018. [PMID: 29526619 DOI: 10.1016/j.ijpharm.2018.03.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This study reports novel food-grade granules for co-delivery of L. plantarum 299v and a standardized extract of Olea europaea leaves (Phenolea®) as oral carrier of probiotics and hydroxytyrosol. Different granule formulations containing either L. plantarum 299v (Lac), or the olive leave extract (Phe) or their combination (Lac-Phe) have been successfully produced through wet granulation employing excipients generally regarded as safe as granulating/binding agents. L. plantarum cells withstood the manufacturing process and were stable upon storage at 4 °C for more than 6 months. In vitro dissolution studies in simulated gastro-intestinal fluids showed the capability of the granules to rapidly dissolve and deliver both olive leave phenols and living L. plantarum cells. In simulated digestion conditions, Lac and Lac-Phe granules protected L. plantarum against the harsh environment of the gastro-intestinal tract. Co-administration of Lac and Phe oral granules to healthy mice provided for higher amounts of hydroxytyrosol in urines as compared to Phe granules alone, suggesting that L. plantarum 299v boosted in vivo conversion of oleuropein to hydroxytyrosol. On the other hand, PCR-assisted profiling of the Lactobacillus population in faeces obtained from mice treated with Lac or Lac plus Phe confirmed that the probiotic arrived alive to colon and was there able to exert a sort of perturbing effect on the climax colonic microflora. Overall, these results pave the way towards the development of a nutraceutical useful for combined delivery of bioactive hydroxytyrosol and probiotics to colon site.
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Affiliation(s)
- Maria Aponte
- Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055, Portici, Naples, Italy
| | - Francesca Ungaro
- Department of Pharmacy, University of Napoli Federico II, Via Domenico Montesano 49, 80131 Napoli, Italy.
| | - Ivana d'Angelo
- Di.S.T.A.Bi.F., University of Campania "Luigi Vanvitelli", Via Vivaldi 43, 81100 Caserta, Italy
| | - Carmen De Caro
- Department of Pharmacy, University of Napoli Federico II, Via Domenico Montesano 49, 80131 Napoli, Italy
| | - Roberto Russo
- Department of Pharmacy, University of Napoli Federico II, Via Domenico Montesano 49, 80131 Napoli, Italy
| | - Giuseppe Blaiotta
- Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055, Portici, Naples, Italy
| | - Fabrizio Dal Piaz
- Department of Medicine, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy
| | - Antonio Calignano
- Department of Pharmacy, University of Napoli Federico II, Via Domenico Montesano 49, 80131 Napoli, Italy
| | - Agnese Miro
- Department of Pharmacy, University of Napoli Federico II, Via Domenico Montesano 49, 80131 Napoli, Italy
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Fujimori T, Taniguchi M, Agusa T, Shiota K, Takaoka M, Yoshida A, Terazono A, Ballesteros FC, Takigami H. Effect of lead speciation on its oral bioaccessibility in surface dust and soil of electronic-wastes recycling sites. J Hazard Mater 2018; 341:365-372. [PMID: 28802247 DOI: 10.1016/j.jhazmat.2017.07.066] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 07/27/2017] [Accepted: 07/29/2017] [Indexed: 06/07/2023]
Abstract
We measured bioaccessible lead (Pb) in simulated gastrointestinal fluids containing Pb-contaminated soil or dust from electronic waste (e-waste) recycling sites to assess the risk of Pb ingestion. The physiologically based extraction test (PBET) was used as in vitro bioaccessibility assay. Pb speciation was determined using X-ray absorption spectroscopy. The total Pb concentrations in dusts (n=8) and soils (n=4) were in the range of 1630-131,000 and 239-7800mg/kg, respectively. Metallic Pb, a common component of e-waste, was ubiquitous in the samples. We also found Pb adsorbed onto goethite and as oxides and carbonate, implying soil mixing and weathering influences. Pb phosphate and organic species were only found in the soil samples, suggesting that formation was soil-specific. We identified other Pb compounds in several samples, including Pb silicate, Pb chromate, and Pb(II) hydrogen phosphate. A correlation analysis indicated that metallic Pb decreased bioaccessibility in the stomach, while a Pb speciation analysis revealed a low bioaccessibility for Pb phosphates and high bioaccessibility for organic Pb species. The health risk based on bioaccessible Pb was estimated to be much lower than that of total Pb due to the lower concentrations.
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Affiliation(s)
- Takashi Fujimori
- Department of Global Ecology, Graduate School of Global Environmental Studies, Kyoto University, Katsura, Nisikyo-ku, Kyoto, 615-8540, Japan; Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Katsura, Nisikyo-ku, Kyoto, 615-8540, Japan.
| | - Masaya Taniguchi
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Katsura, Nisikyo-ku, Kyoto, 615-8540, Japan
| | - Tetsuro Agusa
- Center for Marine Environmental Studies, Ehime University, Bunkyo-cho 2-5, Matsuyama, Ehime 790-8577, Japan
| | - Kenji Shiota
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Katsura, Nisikyo-ku, Kyoto, 615-8540, Japan
| | - Masaki Takaoka
- Department of Global Ecology, Graduate School of Global Environmental Studies, Kyoto University, Katsura, Nisikyo-ku, Kyoto, 615-8540, Japan; Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Katsura, Nisikyo-ku, Kyoto, 615-8540, Japan
| | - Aya Yoshida
- Center for Material Cycles and Waste Management Research, National Institute for Environmental Studies (NIES), 16-2 Onogawa, Tsukuba, 305-8506, Ibaraki, Japan
| | - Atsushi Terazono
- Center for Material Cycles and Waste Management Research, National Institute for Environmental Studies (NIES), 16-2 Onogawa, Tsukuba, 305-8506, Ibaraki, Japan
| | - Florencio C Ballesteros
- Environmental Engineering Graduate Program, University of the Philippines Diliman, Quezon City, 1101, Philippines
| | - Hidetaka Takigami
- Center for Material Cycles and Waste Management Research, National Institute for Environmental Studies (NIES), 16-2 Onogawa, Tsukuba, 305-8506, Ibaraki, Japan
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Basilicata MG, Pepe G, Sommella E, Ostacolo C, Manfra M, Sosto G, Pagano G, Novellino E, Campiglia P. Peptidome profiles and bioactivity elucidation of buffalo-milk dairy products after gastrointestinal digestion. Food Res Int 2017; 105:1003-1010. [PMID: 29433190 DOI: 10.1016/j.foodres.2017.12.038] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 12/12/2017] [Accepted: 12/13/2017] [Indexed: 11/17/2022]
Abstract
Buffalo milk is highly appreciated for its nutritive properties and highly employed in dairy products, despite this the release of bioactive peptides has not been investigated thoroughly. The aim of this work was to characterize in detail the bioaccesible peptides from buffalo-milk dairy products. Six products were subjected to in vitro simulated gastrointestinal digestion and then analyzed by LC-HRMS. The identified peptides were 165 in Yoghurt, 152 in Scamorza, 146 in Mozzarella, 136 in Grana and Ricotta, 120 in Ice Cream samples, belonging to both buffalo caseins (αs1-, β-, k-CN) and whey proteins (α-LA, β-LG). The identified peptide sequences were subjected to a database driven bioactivity search. Results highlighted a wide range of potential bioactive peptides, including antihypertensive, immunomodulatory, antimicrobial, antidiabetic, anticancer and antioxidant activity. These data evidence the content of healthy peptides released from buffalo-milk dairy products and suggest that the specific technological process influence their bioaccessibility.
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Affiliation(s)
- Manuela Giovanna Basilicata
- Department of Pharmacy, School of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy; PhD Program in Drug Discovery and Development, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy
| | - Giacomo Pepe
- Department of Pharmacy, School of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy; Pineta Grande Hospital, Via Domitiana, I-81130 Castelvolturno, CE, Italy
| | - Eduardo Sommella
- Department of Pharmacy, School of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy
| | - Carmine Ostacolo
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, I-80131 Napoli, Italy
| | - Michele Manfra
- Department of Science, University of Basilicata, Viale dell'Ateneo Lucano 10, I-85100 Potenza, Italy
| | - Gennaro Sosto
- Azienda Sanitaria Regionale del Molise, Via Ugo Petrella 1, I-86100 Campobasso, Italy
| | - Giuseppe Pagano
- San Salvatore Dairy Factory, Via Dioniso, I-84050 Giungano, SA, Italy
| | - Ettore Novellino
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, I-80131 Napoli, Italy
| | - Pietro Campiglia
- Department of Pharmacy, School of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy; European Biomedical Research Institute of Salerno, Via De Renzi 50, I-84125 Salerno, Italy.
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Samant TS, Dhuria S, Lu Y, Laisney M, Yang S, Grandeury A, Mueller‐Zsigmondy M, Umehara K, Huth F, Miller M, Germa C, Elmeliegy M. Ribociclib Bioavailability Is Not Affected by Gastric pH Changes or Food Intake: In Silico and Clinical Evaluations. Clin Pharmacol Ther 2017; 104:374-383. [PMID: 29134635 PMCID: PMC6099197 DOI: 10.1002/cpt.940] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 10/30/2017] [Accepted: 11/05/2017] [Indexed: 02/06/2023]
Abstract
Ribociclib (KISQALI), a cyclin‐dependent kinase 4/6 inhibitor approved for the first‐line treatment of HR+/HER2– advanced breast cancer with an aromatase inhibitor, is administered with no restrictions on concomitant gastric pH‐elevating agents or food intake. The influence of proton pump inhibitors (PPIs) on ribociclib bioavailability was assessed using 1) biorelevant media solubility, 2) physiologically based pharmacokinetic (PBPK) modeling, 3) noncompartmental analysis (NCA) of clinical trial data, and 4) population PK (PopPK) analysis. This multipronged approach indicated no effect of gastric pH changes on ribociclib PK and served as a platform for supporting ribociclib labeling language, stating no impact of gastric pH‐altering agents on the absorption of ribociclib, without a dedicated drug–drug interaction trial. The bioequivalence of ribociclib exposure with or without a high‐fat meal was demonstrated in a clinical trial. Lack of restrictions on ribociclib dosing may facilitate better patient compliance and therefore clinical benefit.
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Affiliation(s)
| | | | - Yasong Lu
- Novartis PharmaceuticalsEast HanoverNew JerseyUSA
| | | | - Shu Yang
- Novartis PharmaceuticalsEast HanoverNew JerseyUSA
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40
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Khadhri A, Bouali I, Belkhir S, Mokded R, Smiti S, Falé P, Araújo MEM, Serralheiro MLM. In vitro digestion, antioxidant and antiacetylcholinesterase activities of two species of Ruta: Ruta chalepensis and Ruta montana. Pharm Biol 2017; 55:101-107. [PMID: 27925496 PMCID: PMC7011786 DOI: 10.1080/13880209.2016.1230634] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Revised: 05/27/2016] [Accepted: 08/25/2016] [Indexed: 06/06/2023]
Abstract
CONTEXT Ruta genus (Rutaceae) is abundantly used and described in the most ancient systematic records of medical practice of the Mediterranean world. In Tunisia, this genus is represented by two medicinal and aromatic shrubs: Ruta chalepensis L. and Ruta montana L. OBJECTIVE This study investigates the antioxidant and acetylcholinesterase inhibition (AChE) activities before and after in vitro gastrointestinal metabolism of leaf decoction of R. chalepensis and R. montana. MATERIALS AND METHODS We study, in vitro, the effect of the gastrointestinal juices gastric (1.75 mL) or pancreatic (2.5 mL) juices, on the biological activity by the measurement of the antioxidant activity and AChE inhibition during 4 h of decoction extract obtained from the leaves of the two species of Ruta. RESULTS The results showed that the ability to inhibit the AChE enzyme was similar; being the greatest inhibitory activity exhibited by the ethanol extract (IC50 = 12 ± 1.1 μg/mL) obtained from leaves of R. chalepensis. CONCLUSION In conclusion, we showed that there was no appreciable degradation and that the activity was kept constant after gastric and pancreatic juice digestion.
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Affiliation(s)
- Ayda Khadhri
- Faculty of Sciences, Unity of Research of
Vegetal Ecology, University of El-Manar II, Tunis,
Tunisia
| | - Intidhar Bouali
- Faculty of Sciences, Unity of biochemistry of
lipids and proteins, University of El-Manar II, Tunis,
Tunisia
| | - Samia Belkhir
- Faculty of Sciences, Unity of Research of
Vegetal Ecology, University of El-Manar II, Tunis,
Tunisia
| | - Rabhi Mokded
- Laboratory of Extremophile Plants, Centre of
Biotechnology of Borj Cedria, Hammam-Lif, Tunisia
| | - Samira Smiti
- Faculty of Sciences, Unity of Research of
Vegetal Ecology, University of El-Manar II, Tunis,
Tunisia
| | - Pedro Falé
- Faculty of Sciences, Centre of Chemistry and
Biochemistry, University of Lisbon, Lisboa,
Portugal
| | - Maria Eduarda M. Araújo
- Faculty of Sciences, Centre of Chemistry and
Biochemistry, University of Lisbon, Lisboa,
Portugal
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41
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Abstract
Two agricultural wastes, rice bran and cassava pulp were subjected to acidic hydrolysis by 2 M sulfuric acid which resulted in hemicellulosic oligosaccharide mixtures. Monosaccharide component analysis of these mixtures revealed that the oligosaccharides of rice bran acid hydrolysate (RAHF) composed of glucose and arabinose while cassava pulp acid hydrolysate (CAHF) was found to be comprised of glucose, galactose and arabinose. Both RAHF and CAHF were able to fuel all of the tested three Lactobacillus, five Bifidobacterium and three Bacteroides strains indicating the prebiotic potential of these oligosaccharide mixtures. Moreover, Lb. gasseri grew significantly better on RAHF than on inulin, a benchmark prebiotic oligo- and polysaccharide mixture. When the digestibility of RAHF and CAHF were tested it was found that these oligosaccharide mixtures were only slightly hydrolyzed upon exposure to simulated human gastric (by less than 8%) and pancreatic juices (by less than 3%). Additionally, most sensory attributes of the above obtained oligosaccharide mixtures supplemented two model cereal drink formulations were generally not different from those of the control, while the overall acceptance was not affected significantly in one cereal drink formulation.
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Affiliation(s)
- Chanida Hansawasdi
- Food Science and Technology, Science Division, International College, Mahidol University, Buddhamonthon 4 Rd, Nakhonpathom, Salaya, 73170, Thailand
| | - Peter Kurdi
- Food Biotechnology Laboratory, Food Biotechnology Research Unit, National Center for Genetic Engineering and Biotechnology (BIOTEC), 113 Thailand Science Park, Phahonyothin Road, Klong Nueng, Klong Luang, Pathum Thani, 12120, Thailand.
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Zawahir S, Gawarammana I, Dargan PI, Abdulghni M, Dawson AH. Activated charcoal significantly reduces the amount of colchicine released from Gloriosa superba in simulated gastric and intestinal media. Clin Toxicol (Phila) 2017; 55:914-918. [PMID: 28535126 PMCID: PMC5942148 DOI: 10.1080/15563650.2017.1325897] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 04/11/2017] [Accepted: 04/12/2017] [Indexed: 11/10/2022]
Abstract
BACKGROUND Poisoning with Gloriosa superba, a plant containing colchicine, is common in Sri Lanka. OBJECTIVES This study was to estimate release of colchicine from 5 g of different parts of Gloriosa superba in simulated gastric and intestinal media, and examine the binding efficacy of activated charcoal (AC) to colchicine within this model. METHODS A USP dissolution apparatus-II was used to prepare samples for analysis of colchicine using HPLC. RESULTS Cumulative colchicine release from tuber in gastric media at 120 minutes was significantly higher (2883 μg/g) than in intestinal media (1015 μg/g) (p < .001). Mean ± SD cumulative colchicine concentration over 2 hours from tuber, leaves and trunk in gastric medium was 2883.15 ± 1295.63, 578.25 ± 366.26 and 345.60 ± 200.08 μg/g respectively and the release in intestinal media was 1014.75 ± 268.16, 347.40 ± 262.61 and 251.55 ± 285.72 μg/g respectively. Introduction of 50 g of AC into both media made colchicine undetectable (<0.1 μg/ml). CONCLUSIONS The tuber released the highest quantity of colchicine. The colchicine release and elapse time to achieve saturated, equilibrium dissolution mainly depends on physicochemical properties of plant part. Significant in vitro binding of colchicine to AC suggests that AC has a role in decontamination of patients presenting to hospital after ingestion of Gloriosa superba.
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Affiliation(s)
- Shukry Zawahir
- Faculty of Medicine, University of Ruhuna, Galle, Sri Lanka
- Faculty of Pharmacy, University of Sydney, Sydney, Australia
| | - Indika Gawarammana
- South Asian Clinical Toxicology Research Collaboration, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
- Department of Medicine, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
| | - Paul I. Dargan
- Department of Clinical Toxicology, Guy’s and St. Thomas’s NHS Foundation Trust, London, UK
- Faculty of Life Sciences and Medicine, King’s College London, London, UK
| | - Mahfoudh Abdulghni
- Unaizah College of Pharmacy, Qassim University, Unaizah, Kingdom of Saudi Arabia
| | - Andrew H. Dawson
- South Asian Clinical Toxicology Research Collaboration, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
- Central Clinical School, The University of Sydney, Sydney, Australia
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43
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Jin H, Gui R, Sun J, Wang Y. RETRACTED: Facilely self-assembled magnetic nanoparticles/aptamer/carbon dots nanocomposites for highly sensitive up-conversion fluorescence turn-on detection of tetrodotoxin. Talanta 2017; 176:277-283. [PMID: 28917752 DOI: 10.1016/j.talanta.2017.08.043] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 08/04/2017] [Accepted: 08/11/2017] [Indexed: 01/05/2023]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal).
This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).
This article has been retracted at the request of the Editor following concerns raised by a reader.
The article uses two electron micrographs which have been used in other publications as well, denoting different samples.
Fig. 1A is identical to Fig. 3E in RSC Adv., 2013,3, 20959-20969 doi: 10.1039/C3RA43120G despite describing different samples.
Fig. 2A is identical to Fig. 1B in Sensors & Actuators B: Chemical, vol 245, pp 386-394 https://doi.org/10.1016/j.snb.2017.01.166 and Fig. 1A in Materials Letters vol 195 pp 131-135 https://doi.org/10.1016/j.matlet.2017.02.119 despite describing different samples.
These problems with the data presented cast doubt on all the data, and accordingly also the conclusions based on that data, in this publication.
The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process., http://dx.doi.org/10.1016/j.talanta.2017.08.043.
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Affiliation(s)
- Hui Jin
- College of Chemistry and Chemical Engineering, Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, Qingdao University, Qingdao266071, PR China
| | - Rijun Gui
- College of Chemistry and Chemical Engineering, Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, Qingdao University, Qingdao266071, PR China.
| | - Jie Sun
- Institute of Materia Medica,Medica, Shandong Academy of Medical Sciences, Jinan250062, PR China
| | - Yanfeng Wang
- Institute of Materia Medica,Medica, Shandong Academy of Medical Sciences, Jinan250062, PR China
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Wang T, Wu C, Fan G, Li T, Gong H, Cao F. Ginkgo biloba extracts-loaded starch nano-spheres: Preparation, characterization, and in vitro release kinetics. Int J Biol Macromol 2017; 106:148-157. [PMID: 28780415 DOI: 10.1016/j.ijbiomac.2017.08.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 07/17/2017] [Accepted: 08/01/2017] [Indexed: 02/07/2023]
Abstract
Ginkgo as a promising edible material and herbal medicine has received much attention due to its abundant starch contents and functional ingredient ginkgo biloba extracts (GBEs). Many foreign scholars suggest that GBEs can effectively ameliorate the symptoms of mild memory impairment and Alzheimer's dementia. However, an insurmountable problem with application of the GBEs is its low bioavailability, which restricts its application in vivo. Considering the biocompatibility between GBEs and starch, we have prepared ginkgo and corn starch-based nano-carriers, and thereby loaded GBEs onto starch nano-spheres (SNPs) by nanoprecipitation. Compared with unloaded SNPs (201-250nm), the mean sizes of the monodispersed and spherical GBEs-loaded SNPs were 255-396nm. Moreover, the loading amounts of GBEs onto ginkgo, and corn SNPs were 0.661-1.045, and 0.560mg/mg, respectively. In addition, in artificial gastric and intestinal juices, the GBEs-loaded SNPs exhibited a better sustained release than free GBEs.
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Affiliation(s)
- Tao Wang
- College of Light Industry Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037, China; Department of Chemistry Engineering, Xuzhou College of Industrial Technology, Xuzhou, Jiangsu Province, 221140, China
| | - Caie Wu
- College of Light Industry Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037, China; Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037, China.
| | - Gongjian Fan
- College of Light Industry Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037, China; Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037, China
| | - Tingting Li
- College of Light Industry Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037, China; Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037, China
| | - Hao Gong
- College of Light Industry Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037, China
| | - Fuliang Cao
- Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037, China; College of Forestry, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037, China
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45
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Abstract
The development of a smart microencapsulation system programmed to actively respond to environmental pH change has long been recognized a key technology in pharmaceutical and food sciences. To this end, we developed hollow microparticles (MPs) with self-controlled macropores that respond to environmental pH change, using an Oil-in-Water emulsion technique, for oral drug delivery. We observed that freeze-drying of MPs induced closure of macropores. The closing/opening behavior of macropores was confirmed by exposing MPs encapsulating different ingredients (sulforhodamine b, fluorescent nanoparticles, and lactase) to simulated gastrointestinal (GI) fluids. MPs maintained their intact, closed pore structure in gastric pH, and subsequent exposure to intestinal pH resulted in pore opening and ingredients release. Further, MPs displayed higher protection (>15 times) than commercial lactase formulation, indicating the protective ability of the system against harsh GI conditions. This study showed development of a hybrid MP system combining the advantages of solid particles and hollow capsules, exhibiting easy solvent-free loading mechanism and smart protection/release of encapsulates through controllable macropores. Ultimately, our MPs system strives to usher a new research area in smart drug delivery systems and advance the current oral drug delivery technology by solving major challenges in targeted delivery of pH-sensitive therapeutics.
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Affiliation(s)
- Ankit Kumar
- Department of Chemical and Materials Engineering, University of Alberta, and Ingenuity Lab, Edmonton, AB T6G 1H9, Canada
| | - Carlo Montemagno
- Department of Chemical and Materials Engineering, University of Alberta, and Ingenuity Lab, Edmonton, AB T6G 1H9, Canada.
| | - Hyo-Jick Choi
- Department of Chemical and Materials Engineering, University of Alberta, and Ingenuity Lab, Edmonton, AB T6G 1H9, Canada.
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46
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Abstract
The World Health Organization (WHO) has reported that globally 235 million people suffer from chronic and other inflammatory diseases. The short half-lives of nonsteroidal anti-inflammatory drugs (NSAIDs) and their notoriety in causing gastrointestinal discomforts, warrants these drugs to be released in a controlled and sustained manner. Although polymeric particles have been widely used for drug delivery, there are few reports that showcase their ability in encapsulating and sustaining the release of NSAIDs. In this paper, polymeric nanoencapsulating microcapsules loaded with NSAIDs were fabricated using solid/water/oil/water emulsion solvent evaporation method. Two NSAIDs, ibuprofen and naproxen, were first pre-loaded into nanoparticles and then encapsulated into a larger hollow microcapsule that contained the third NSAID, celecoxib. A high encapsulation efficiency (%) of these NSAIDs was achieved and a sustained release (up to 30 days) of these drugs in phosphate-buffered saline was observed. Then, a gastrointestinal drug - cimetidine (CIM) - was co-loaded with the NSAIDs. This floating delivery system exhibited excellent buoyancy (~88% up to 24 h) in simulated gastric fluid. It also allowed a sequential release of the drugs, whereby an immediate release of CIM followed by NSAIDs was observed. Drug release of the NSAIDs observed Fickian diffusion mechanism, whereas CIM observed non-Fickian diffusion. Therefore, this delivery system is a promising platform to control the delivery of NSAIDs to combat inflammatory diseases, thereby protecting against possible gastrointestinal side effects that may arise from the overuse of NSAIDs.
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Affiliation(s)
- Jong-Suep Baek
- School of Materials Science and Engineering, Nanyang Technological University, Singapore
| | - Eng Wan Yeo
- School of Materials Science and Engineering, Nanyang Technological University, Singapore
| | - Yin Hao Lee
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Nguan Soon Tan
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Say Chye Joachim Loo
- School of Materials Science and Engineering, Nanyang Technological University, Singapore
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore
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47
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Wang R, Zhou L, Wang W, Li X, Zhang F. In vivo gastrointestinal drug-release monitoring through second near-infrared window fluorescent bioimaging with orally delivered microcarriers. Nat Commun 2017; 8:14702. [PMID: 28281530 PMCID: PMC5353702 DOI: 10.1038/ncomms14702] [Citation(s) in RCA: 149] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 01/23/2017] [Indexed: 01/08/2023] Open
Abstract
Non-invasive monitoring of gastrointestinal drug release in vivo is extremely challenging because of the limited spatial resolution and long scanning time of existing bioimaging modalities, such as X-ray radiation and magnetic resonance. Here, we report a novel microcarrier that can retain drugs and withstand the harsh conditions of gastrointestinal tract. Significantly, we can track the microcarrier fate and semi-quantitatively monitor the content of drug released in vivo in real time by measuring the fluorescence signals in the second near-infrared window of lanthanide-based downconversion nanoparticles with an absorption competition-induced emission bioimaging system. The microcarriers show a prolonged residence time of up to 72 h in the gastrointestinal tract, releasing up to 62% of their content. Moreover, minimal deposition of the microcarriers is found in non-target organs, such as the liver, spleen and kidney. These findings provide novel insights for the development of therapeutic and bioimaging strategies of orally administered drugs.
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Affiliation(s)
- Rui Wang
- Department of Chemistry, Laboratory of Advanced Materials, Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
| | - Lei Zhou
- Department of Chemistry, Laboratory of Advanced Materials, Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
| | - Wenxing Wang
- Department of Chemistry, Laboratory of Advanced Materials, Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
| | - Xiaomin Li
- Department of Chemistry, Laboratory of Advanced Materials, Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
| | - Fan Zhang
- Department of Chemistry, Laboratory of Advanced Materials, Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
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48
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Rojowski J, Zajac M, Muszynska B, Opoka W. INFLUENCE OF EXTRACTION PROCEDURE FROM EDIBLE MUSHROOM SPECIES BOLETUS BADIUS ON ZINC QUANTITY RELEASED INTO SIMULATED GASTRIC FLUID. Acta Pol Pharm 2017; 74:597-602. [PMID: 29624264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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49
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Quintana JB, Rosende M, Montes R, Rodríguez-Álvarez T, Rodil R, Cela R, Miró M. In-vitro estimation of bioaccessibility of chlorinated organophosphate flame retardants in indoor dust by fasting and fed physiologically relevant extraction tests. Sci Total Environ 2017; 580:540-549. [PMID: 27993474 DOI: 10.1016/j.scitotenv.2016.11.210] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 11/30/2016] [Accepted: 11/30/2016] [Indexed: 06/06/2023]
Abstract
This paper reports the evaluation of in-vitro physiologically relevant extraction tests for ascertainment of the bioaccessible fractions of emerging flame retardants from indoor dust in the gastric and gastrointestinal compartments. Standardized bioaccessibility tests under both fasting (UBM-like test) and fed (FOREhST test) conditions simulating the macronutrient composition of an average child diet were harnessed for investigation of the oral bioaccessibility of chlorinated organophosphate esters, namely, tris(2-chloroethyl) phosphate (TCEP), tris(1-chloro-2-propyl) phosphate (TCPP) and tris(1,3-dichloro-2-propyl) phosphate (TDCP), in household and automobile cabin dust samples with varying concentration levels of contaminants. Minimal processing of the biomimetic extracts (only protein precipitation using acetonitrile) was proven feasible by analysis with liquid chromatography-mass spectrometric detection (LC-MS/MS). An inversely proportional relationship was identified between log Kow and oral bioaccessibility concentrations for TCEP, TCPP and TDCP in both dust samples with maximum bioaccessibility fractions for TCEP within the range of 50-103%. Non-bioaccessible fractions were determined by matrix-solid phase dispersion. Limits of quantification of LC-MS/MS in surrogate digestive fluids ranging from 0.4-0.8ng/mL suffice for determination of freely dissolved fractions of the two less hydrophobic species. Our results indicate that lipophilic food commodities used under fed-state gastrointestinal extraction conditions do not increase availability of TCEP, TCPP and TDCP in body fluids, and therefore conservative conditions in human health risk explorations for the target moderately polar flame retardants might be obtained with simplified tests under fasting conditions. This also holds true for the UBM/FOREhST bioaccessibility data for SRM 2585 (organic contaminants in house dust). Estimated average daily intake doses for toddlers incorporating oral bioaccessibility data afforded body burdens for the three chlorinated alkyl phosphates of ca. 3000 to 700 times below reference dose values, which indicate that long-term exposure to chlorinated organophosphate esters via accidental ingestion of indoor dust does not pose health risks to toddlers.
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Affiliation(s)
- José Benito Quintana
- Department of Analytical Chemistry, Nutrition and Food Sciences, IIAA - Institute for Food Analysis and Research, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - María Rosende
- FI-TRACE Group, Department of Chemistry, Faculty of Science, University of the Balearic Islands, Carretera de Valldemossa km 7.5, E-07122 Palma de Mallorca, Illes Balears, Spain
| | - Rosa Montes
- Department of Analytical Chemistry, Nutrition and Food Sciences, IIAA - Institute for Food Analysis and Research, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Tania Rodríguez-Álvarez
- Department of Analytical Chemistry, Nutrition and Food Sciences, IIAA - Institute for Food Analysis and Research, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Rosario Rodil
- Department of Analytical Chemistry, Nutrition and Food Sciences, IIAA - Institute for Food Analysis and Research, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Rafael Cela
- Department of Analytical Chemistry, Nutrition and Food Sciences, IIAA - Institute for Food Analysis and Research, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Manuel Miró
- FI-TRACE Group, Department of Chemistry, Faculty of Science, University of the Balearic Islands, Carretera de Valldemossa km 7.5, E-07122 Palma de Mallorca, Illes Balears, Spain.
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Chang YC, Hsiao PJ, Wu KL, Hsiao CJ. Proton pump inhibitors, purple gastric juice and peptic ulcer disease. QJM 2017; 110:43. [PMID: 27795292 DOI: 10.1093/qjmed/hcw172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y-C Chang
- Department of Internal Medicine, Taoyuan Armed Forces General Hospital, Taiwan, Republic of China
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - P-J Hsiao
- Department of Internal Medicine, Taoyuan Armed Forces General Hospital, Taiwan, Republic of China
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - K-L Wu
- Department of Internal Medicine, Taoyuan Armed Forces General Hospital, Taiwan, Republic of China
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - C-J Hsiao
- Department of Internal Medicine, Taoyuan Armed Forces General Hospital, Taiwan, Republic of China.
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China.
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