1
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Marin DE, Bulgaru VC, Pertea A, Grosu IA, Pistol GC, Taranu I. Alternariol Monomethyl-Ether Induces Toxicity via Cell Death and Oxidative Stress in Swine Intestinal Epithelial Cells. Toxins (Basel) 2024; 16:223. [PMID: 38787075 PMCID: PMC11125839 DOI: 10.3390/toxins16050223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/22/2024] [Accepted: 05/09/2024] [Indexed: 05/25/2024] Open
Abstract
Alternariol monomethyl-ether (AME), together with altenuene and alternariol, belongs to the Alternaria mycotoxins group, which can contaminate different substrates, including cereals. The aim of the present study was to obtain a deeper understanding concerning the effects of AME on pig intestinal health using epithelial intestinal cell lines as the data concerning the possible effects of Alternaria toxins on swine are scarce and insufficient for assessing the risk represented by Alternaria toxins for animal health. Our results have shown a dose-related effect on IPEC-1 cell viability, with an IC50 value of 10.5 μM. Exposure to the toxin induced an increase in total apoptotic cells, suggesting that AME induces programmed cell death through apoptosis based on caspase-3/7 activation in IPEC-1 cells. DNA and protein oxidative damage triggered by AME were associated with an alteration of the antioxidant response, as shown by a decrease in the enzymatic activity of catalase and superoxide dismutase. These effects on the oxidative response can be related to an inhibition of the Akt/Nrf2/HO-1 signaling pathway; however, further studies are needed in order to validate these in vitro data using in vivo trials in swine.
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Affiliation(s)
- Daniela Eliza Marin
- National Research and Development Institute for Biology and Animal Nutrition (INCDBNA-IBNA-Balotesti), Calea Bucuresti nr.1, 077015 Balotesti Ilfov, Romania; (V.C.B.); (A.P.); (I.A.G.); (G.C.P.); (I.T.)
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2
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Larsen C, Andersen AB, Sato H, Brunse A, Thymann T. Transplantation of fecal filtrate to neonatal pigs reduces post-weaning diarrhea: A pilot study. Front Vet Sci 2023; 10:1110128. [PMID: 37008345 PMCID: PMC10060900 DOI: 10.3389/fvets.2023.1110128] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 02/27/2023] [Indexed: 03/18/2023] Open
Abstract
Post-weaning diarrhea (PWD) remains a major source of mortality and morbidity in swine production. Transplantation of bacteria-free filtrate of feces (fecal filtrate transplant, FFT) has shown gut protective effects in neonatal pigs, and early postnatal establishment of the gut microbiome is suggested to determine later stability and robustness of the gut. We, therefore, hypothesized that early postnatal transplantation of bacteria-free feces would have a protective effect against PWD. Using fecal filtrates derived from healthy lactating sows, we compared oral administration of fecal filtrate transplantation (FFT, n = 20) and saline (CON, n = 18) in newborn piglets. We assessed growth, diarrhea prevalence, blood parameters, organ measurements, morphology, and gut brush border enzymes and analyzed luminal bacterial composition using 16S rRNA gene amplicon sequencing. The two groups showed similar average daily gain (ADG) during the suckling period, whereas in the post-weaning period, a negative ADG was observed in both groups. While diarrhea was largely absent in both groups before weaning, there was a lower diarrhea prevalence on days 27 (p = 2.07*10−9), 28 (p = 0.04), and 35 (p = 0.04) in the FFT group relative to CON. At weaning on day 27, the FFT group had higher numbers of red blood cells, monocytes, and lymphocytes, while on day 35, i.e., 1 week after weaning, the two groups were similar regarding hematology. The biochemical profile was largely similar between FFT and CON on days 27 and 35, except for a higher level of alanine aminotransferase and a lower level of Mg in the FFT group. Likewise, organ weights relative to body weight were largely similar on day 35, albeit with a lower stomach weight and more colon content in FFT relative to CON. Gut mucosal percentage and mucosal enzyme activity were similar between the two groups on days 27 and 35. Gut bacterial composition was slightly different on day 35 but not on day 27. In conclusion, early postnatal administration of FFT, showed positive clinical effects in post-weaning pigs, albeit with subtle effects on the gut mucosa and microbiome. Prophylactic treatment with FFT may offer a means to reduce morbidity, yet larger studies are required to document effect size.
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3
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Liu X, Wu Y, Liu C, Chen K, Gregersen H. Development of an Ingestible Expandable Capsule for Weight Loss. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:16821. [PMID: 36554702 PMCID: PMC9779746 DOI: 10.3390/ijerph192416821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/04/2022] [Accepted: 12/10/2022] [Indexed: 06/17/2023]
Abstract
Obesity has grown to epidemic proportions with 2.1 billion people being overweight worldwide. A food-grade expandable capsule named EndoXpand for the treatment of overweight people was designed and developed in this study. EndoXpand consists of an inner expandable material (core), an embracing membrane, and a gelatin capsule shell. It is designed to occupy volume in the stomach and reduce hunger sensation. The occupied volume is changeable over time, dependent on the number of ingested capsules and their degradation time. This will avoid gastric accommodation to constant volume devices as seen in the use of intragastric balloons. Several materials were tested. Collagen casing was selected as the membrane and corn silk was used to tie the membrane. Dried black fungus (Auricularia auricula) was the biological material that expanded most. However, synthesized cellulose-based hydrogel expanded more and was chosen as the optimal expandable core material. The hydrogel-based EndoXpand expanded 72 times after soaking in an acidic environment for 80 min. The corn silk ligations weakened and broke after 3 h. This resulted in release of the expanded material that was designed to easily pass the pylorus and travel down the intestine for digestion or excretion. In conclusion, this study provides design and in vitro proof-of-technology data for a potential groundbreaking approach. Further studies are needed in animal models and human phase I studies.
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Affiliation(s)
- Xingyu Liu
- Graduate School, Chongqing Normal University, Chongqing 401331, China
| | - Yeung Wu
- Department of Surgery, The Chinese University of Hong Kong, Shatin, Hong Kong 999077, China
| | - Chang Liu
- Department of Surgery, The Chinese University of Hong Kong, Shatin, Hong Kong 999077, China
| | - Kaiqi Chen
- Department of Surgery, The Chinese University of Hong Kong, Shatin, Hong Kong 999077, China
| | - Hans Gregersen
- GIOME, California Medical Innovations Institute, San Diego, CA 92121, USA
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4
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Wang W, Ma Y, Zhang Y, Nie J, Hu D, Yang W, Shen Y, Cui X, Ding H, Li L, Huang X. Pharmacokinetics, bioavailability, and excretion of ponazuril in piglets. Front Vet Sci 2022; 9:1054417. [PMID: 36570513 PMCID: PMC9768325 DOI: 10.3389/fvets.2022.1054417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 11/21/2022] [Indexed: 12/12/2022] Open
Abstract
Ponazuril is a triazine anticoccidial drug which is the main metabolite of toltrazuril in animals, it has excellent activity against many protozoa, including Cystoisospora suis, and has broad application prospects in the control of swine coccidiosis. To evaluate the pharmacokinetic and excretion characteristics of ponazuril, 12 healthy piglets aged 10-14 days were divided into 2 groups for pharmacokinetic studies, which were given 20 mg/kg body weight ponazuril orally and intravenously, respectively. And 6 other piglets were housed individually in metabolic cages and given the same oral dose of ponazuril. After administration, the concentration of ponazuril in plasma, fecal, and urine samples collected was determined using high-performance liquid chromatography (HPLC). The plasma concentration profiles of ponazuril obtained after intravenous and oral administration were analyzed simultaneously by the nonlinear mixed-effects (NLME) model. Following the results, the pharmacokinetics of ponazuril exhibited a Michaelis-Menten elimination with Michaelis-Menten constant Km and maximum metabolic rate Vm of 10.8 μg/mL and 0.083 mg/kg/h. The apparent volume of distribution was calculated to be 735 mL/kg, and the final estimated oral bioavailability was 81%. Besides, cumulatively 86.42 ± 2.96% of ponazuril was recovered from feces and 0.31% ± 0.08% from urine during 0-1,020 h after oral administration. These findings indicated a good oral absorption of ponazuril in piglets with nonlinear disposition and slow excretion largely via feces, implying sustained drug concentration in vivo and long-lasting anticoccidial effects.
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Affiliation(s)
- Wenxiang Wang
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Yuqiao Ma
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Yunxiao Zhang
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Jingjing Nie
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Daxing Hu
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Weicong Yang
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Yue Shen
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Xinglong Cui
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Huanzhong Ding
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Li Li
- College of Animal Science, South China Agricultural University, Guangzhou, China,Li Li
| | - Xianhui Huang
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China,*Correspondence: Xianhui Huang
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5
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Ambrosio CMS, Alvim ID, Wen C, Gómez Expósito R, Aalvink S, Contreras Castillo CJ, Da Gloria EM, Smidt H. Exploring the effect of a microencapsulated citrus essential oil on in vitro fermentation kinetics of pig gut microbiota. Front Microbiol 2022; 13:952706. [PMID: 36106076 PMCID: PMC9465239 DOI: 10.3389/fmicb.2022.952706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/27/2022] [Indexed: 11/13/2022] Open
Abstract
Essential oils (EOs) have emerged as a potential alternative to antibiotics in pig breeding due to their antimicrobial properties. Citrus EOs, a common by-product of the orange juice industry, can be an interesting alternative from a financial perspective due to their huge offer in the global market. Thus, the effect of a citrus EO, and specifically different formulations of Brazilian Orange Terpenes (BOT), on pig gut microbiota was evaluated by means of an in vitro fermentation model simulating different sections of the pig gut (stomach, ileum, and colon). Treatments consisted in: BOT in its unprotected form (BOT, 1.85 and 3.70 mg/mL), microencapsulated BOT (MBOT, 3.50 and 7.00 mg/mL), colistin (2 μg/mL), and a control. BOT and MBOT altered in a similar way the total bacterial 16S rRNA gene copies in the stomach only from 18 h of incubation onwards, and no metabolite production in terms of short-chain fatty acids (SCFAs) was detected. In ileal and colonic fermentations, BOT and MBOT affected ileal and colonic microbiota in terms of total bacterial 16S rRNA gene copies, reduced phylogenetic diversity, and altered composition (p < 0.05) as evidenced by the significant reduction of certain bacterial taxa. However, more pronounced effects were found for MBOT, indicating its higher antimicrobial effects compared to the unprotected BOT, and suggesting that the antibacterial efficiency of the unprotected BOT was probably enhanced by microencapsulation. Furthermore, MBOT stimulated lactate production in ileal fermentations and greatly stimulated overall SCFA production in colonic fermentations. This indicates that besides the shifts in ileal and colonic microbiota by the delivered EO (BOT), the wall material of microcapsules (chitosan/modified starch) might have worked as an additional carbon source with prebiotic functioning, stimulating growth and metabolic activity (SCFAs) of colonic bacteria.
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Affiliation(s)
- Carmen M. S. Ambrosio
- Dirección de Investigación, Innovación y Responsabilidad Social, Universidad Privada del Norte (UPN), Trujillo, Peru
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, Netherlands
- *Correspondence: Carmen M. S. Ambrosio
| | - Izabella D. Alvim
- Technology Center of Cereal and Chocolate, Institute of Food Technology (ITAL), São Paulo, Brazil
| | - Caifang Wen
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, Netherlands
| | - Ruth Gómez Expósito
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, Netherlands
- Nestlé Institute of Health Sciences, Société des Produits Nestlé S. A., Lausanne, Switzerland
| | - Steven Aalvink
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, Netherlands
| | - Carmen J. Contreras Castillo
- Department of Agri-Food Industry, Food and Nutrition, “Luiz de Queiroz” College of Agriculture (ESALQ), University of São Paulo, São Paulo, Brazil
| | - Eduardo M. Da Gloria
- Department of Biological Science, “Luiz de Queiroz” College of Agriculture (ESALQ), University of São Paulo, São Paulo, Brazil
| | - Hauke Smidt
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, Netherlands
- Hauke Smidt
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6
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den Hollander D, Holvoet C, Demeyere K, De Zutter N, Audenaert K, Meyer E, Croubels S. Cytotoxic Effects of Alternariol, Alternariol Monomethyl-Ether, and Tenuazonic Acid and Their Relevant Combined Mixtures on Human Enterocytes and Hepatocytes. Front Microbiol 2022; 13:849243. [PMID: 35531275 PMCID: PMC9072788 DOI: 10.3389/fmicb.2022.849243] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 03/28/2022] [Indexed: 11/20/2022] Open
Abstract
Alternariol (AOH), alternariol monomethyl-ether (AME), and tenuazonic acid (TeA) are major mycotoxins produced by fungi of the genus Alternaria and are common contaminants of food products such as fruits, vegetables, cereals and grains. Alternaria mycotoxins are known to cause relevant economic losses and to have a negative impact on human and animal health. EFSA stated in its scientific opinion that data on the toxicity of Alternaria mycotoxins in humans and livestock are generally lacking, precluding proper hazard characterization. This study aimed to fill some knowledge gaps by studying the in vitro cytotoxicity toward human intestinal epithelial cells (Caco-2) and hepatocytes (HepG2). Cytotoxic properties were assessed by flow cytometric analyses of remaining viable cells (i.e., propidium iodide negative) after mycotoxin exposure for 24-48 h versus solvent control. Treatment of cells with single doses of AOH, AME, and TeA resulted in a dose-dependent loss of cell viability for both cell lines. Half maximal effective concentrations (EC50) of the different mycotoxins were comparable for the two cell lines. On HepG2 cells, EC50 values varying between 8 and 16, 4 and 5, and 40 and 95 μg/mL were calculated for AOH, AME, and TeA, respectively. On Caco-2 cells, EC50 values of 19 μg/mL and varying between 6 and 23, and 60 and 90 μg/mL were calculated for AOH, AME, and TeA, respectively. A general relative cytotoxicity ranking of about 1 = 1 >>> 3 was obtained for AOH, AME, and TeA, respectively. Treatment of both cell lines with combined binary and ternary mixtures of AOH, AME, and TeA in a 1:1:3 ratio, also showed a dose-dependent decrease in cell viability. For both cell lines, the binary combination of especially AME and TeA (1:3 ratio) but also of AOH and AME (1:1 ratio) significantly increased the cytotoxicity compared to the single compound toxicity, although mainly at the highest concentrations tested. The ternary combinations of AOH, AME, and TeA induced only a slight increase in cytotoxicity compared to the single mycotoxins, again at the highest concentrations tested.
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Affiliation(s)
- Danica den Hollander
- Laboratory of Pharmacology and Toxicology, Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Celestien Holvoet
- Laboratory of Biochemistry, Department of Veterinary and Biosciences, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Kristel Demeyere
- Laboratory of Biochemistry, Department of Veterinary and Biosciences, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Noémie De Zutter
- Laboratory of Applied Mycology and Phenomics, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Kris Audenaert
- Laboratory of Applied Mycology and Phenomics, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Evelyne Meyer
- Laboratory of Biochemistry, Department of Veterinary and Biosciences, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Siska Croubels
- Laboratory of Pharmacology and Toxicology, Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
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7
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Stamatopoulos K, O'Farrell C, Simmons M, Batchelor H. In vivo models to evaluate ingestible devices: Present status and current trends. Adv Drug Deliv Rev 2021; 177:113915. [PMID: 34371085 DOI: 10.1016/j.addr.2021.113915] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/27/2021] [Accepted: 08/02/2021] [Indexed: 12/12/2022]
Abstract
Evaluation of orally ingestible devices is critical to optimize their performance early in development. Using animals as a pre-clinical tool can provide useful information on functionality, yet it is important to recognize that animal gastrointestinal physiology, pathophysiology and anatomy can differ to that in humans and that the most suitable species needs to be selected to inform the evaluation. There has been a move towards in vitro and in silico models rather than animal models in line with the 3Rs (Replacement, Reduction and Refinement) as well as the better control and reproducibility associated with these systems. However, there are still instances where animal models provide the greatest understanding. This paper provides an overview of key aspects of human gastrointestinal anatomy and physiology and compares parameters to those reported in animal species. The value of each species can be determined based upon the parameter of interest from the ingested device when considering the use of pre-clinical animal testing.
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Affiliation(s)
- Konstantinos Stamatopoulos
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; Biopharmaceutics, Pharmaceutical Development, PDS, MST, RD Platform Technology & Science, GSK, David Jack Centre, Park Road, Ware, Hertfordshire SG12 0DP, UK
| | - Connor O'Farrell
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Mark Simmons
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Hannah Batchelor
- Strathclyde Institute of Pharmacy and Biomedical Sciences, 161 Cathedral Street, Glasgow G4 0RE, UK.
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8
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Hansen LHB, Cieplak T, Nielsen B, Zhang Y, Lauridsen C, Canibe N. Screening of probiotic candidates in a simulated piglet small intestine in vitro model. FEMS Microbiol Lett 2021; 368:6240155. [PMID: 33877306 DOI: 10.1093/femsle/fnab045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 04/16/2021] [Indexed: 12/17/2022] Open
Abstract
The CoMiniGut in vitro model mimicking the small intestine of piglets was used to evaluate four probiotic strains for their potential as a preventive measure against development of diarrhea in weaned pigs. In the in vitro system, piglet digesta was inoculated with pathogenic enterotoxigenic Escherichia coli F4 (ETEC F4), and the short-chain fatty acid profile and the gut microbiota composition were assessed. A total of four probiotic strains were evaluated: Enterococcus faecium (CHCC 10669), Lactobacillus rhamnosus (CHCC 11994), Bifidobacterium breve (CHCC 15268) and Faecalibacterium prausnitzii (CHCC 28556). The significant differences observed in metabolite concetration and bacterial enumeration were attributed to variation in inoculating material or pathogen challenge rather than probiotic treatment. Probiotic administration influenced the microbiota composition to a small extend. Learnings from the present study indicate that the experimental setup, including incubation time and choice of inoculating material, should be chosen with care.
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Affiliation(s)
- L H B Hansen
- Chr. Hansen A/S, Animal Health Innovation, Bøge Allé 10-12, 2970 Hørsholm, Denmark.,Department of Animal Science, Aarhus University, Blichers Allé 20, 8830 Tjele, Denmark
| | - T Cieplak
- Chr. Hansen A/S, Animal Health Innovation, Bøge Allé 10-12, 2970 Hørsholm, Denmark
| | - B Nielsen
- Chr. Hansen A/S, Animal Health Innovation, Bøge Allé 10-12, 2970 Hørsholm, Denmark
| | - Y Zhang
- Department of Food Science, Microbiology and Fermentation, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark
| | - C Lauridsen
- Department of Animal Science, Aarhus University, Blichers Allé 20, 8830 Tjele, Denmark
| | - N Canibe
- Department of Animal Science, Aarhus University, Blichers Allé 20, 8830 Tjele, Denmark
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9
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Clouard C, Lannuzel C, Bourgot CL, Gerrits WJJ. Lactose and Digestible Maltodextrin in Milk Replacers Differently Affect Energy Metabolism and Substrate Oxidation: A Calorimetric Study in Piglets. J Nutr 2020; 150:3114-3122. [PMID: 33097931 DOI: 10.1093/jn/nxaa296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/13/2020] [Accepted: 09/09/2020] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND In recent years, lactose-free infant formulas have been increasingly used. Digestible maltodextrins are commonly used as a substitute for lactose in these formulas, but the effects on energy metabolism are unknown. OBJECTIVE We aimed to evaluate the differences in energy metabolism and substrate oxidation in piglets fed milk replacers containing lactose compared with maltodextrin as the only source of carbohydrates. METHODS Piglets (Tempo × Topigs 20) from 8 litters were fed milk replacers containing lactose or maltodextrin (28% w/w, milk powder basis) from 1 to 9 wk of age (n = 4 litters/milk replacer). At 5 wk of age, 4 females and 4 entire males (mean ± SEM bodyweight, 10 ± 0.3 kg) were selected per litter, and housed in 16 groups of 4 littermates, with 2 females and 2 males per pen (n = 8 groups/milk replacer). Between 7 and 9 wk of age, groups were housed for 72 h in climate respiration chambers, and fed their experimental milk replacer in 2 meals per day, at 08:30 and 16:30. Heat production data were calculated from the continuous measurement of gaseous exchanges and analyzed using general linear models in SAS. RESULTS Resting metabolic rate was 6% less in maltodextrin- than in lactose-fed piglets, notably before the morning meal. The postprandial respiratory quotient was 13% greater in maltodextrin- than in lactose-fed piglets after both meals. Net rates of carbohydrate oxidation were on average 5% greater in maltodextrin- than in lactose-fed piglets, particularly after the afternoon meal, whereas net rates of fat oxidation were 9% less in maltodextrin- than in lactose-fed piglets, particularly after the morning meal. CONCLUSIONS Compared with lactose, maltodextrin in milk replacers reduced resting metabolic rate in the fasting state, and induced a shift in postprandial substrate oxidation profiles in pigs. Further research is warranted to evaluate the consequences of these metabolic changes for body composition.
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Affiliation(s)
- Caroline Clouard
- Adaptation Physiology Group, Department of Animal Sciences, Wageningen University & Research, Wageningen, The Netherlands
| | - Corentin Lannuzel
- Animal Nutrition Group, Department of Animal Sciences, Wageningen University & Research, Wageningen, The Netherlands
| | | | - Walter J J Gerrits
- Animal Nutrition Group, Department of Animal Sciences, Wageningen University & Research, Wageningen, The Netherlands
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10
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Kirtane AR, Hua T, Hayward A, Bajpayee A, Wahane A, Lopes A, Bensel T, Ma L, Stanczyk FZ, Brooks S, Gwynne D, Wainer J, Collins J, Tamang SM, Langer R, Traverso G. A once-a-month oral contraceptive. Sci Transl Med 2020; 11:11/521/eaay2602. [PMID: 31801885 DOI: 10.1126/scitranslmed.aay2602] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 10/25/2019] [Indexed: 12/12/2022]
Abstract
Poor patient adherence to oral contraceptives is the predominant cause of failure of these therapies, leading to unplanned pregnancies that can negatively affect female health worldwide. To improve patient adherence, we developed an oral contraceptive that is administered once a month. Here, we describe the design and report in vivo characterization of a levonorgestrel-releasing gastric resident dosage form in pigs.
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Affiliation(s)
- Ameya R Kirtane
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Tiffany Hua
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Alison Hayward
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Ambika Bajpayee
- Departments of Bioengineering and Mechanical Engineering, Northeastern University, Boston, MA 02115, USA
| | - Aniket Wahane
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Aaron Lopes
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Taylor Bensel
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Lihong Ma
- Department of Obstetrics and Gynecology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Frank Z Stanczyk
- Department of Obstetrics and Gynecology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Sierra Brooks
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Declan Gwynne
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jacob Wainer
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Joy Collins
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Siddartha M Tamang
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Robert Langer
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. .,Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Media Lab, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Giovanni Traverso
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. .,Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
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11
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Catteuw A, Devreese M, De Baere S, Antonissen G, Huybrechts B, Ivanova L, Uhlig S, Martens A, De Saeger S, De Boevre M, Croubels S. Toxicokinetic Studies in Piglets Reveal Age-Related Differences in Systemic Exposure to Zearalenone, Zearalenone-14-Glucoside, and Zearalenone-14-Sulfate. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:7757-7764. [PMID: 32584032 DOI: 10.1021/acs.jafc.0c01943] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Juveniles are considered as one of the most vulnerable population groups concerning mycotoxins and their modified forms. The weaning stage is a particularly vulnerable period in the life of mammals, reflected in intestinal and immune dysfunction. The current study investigated the toxicokinetic (TK) characteristics of zearalenone (ZEN), zearalenone-14-glucoside (ZEN14G), and zearalenone-14-sulfate (ZEN14S) in weaned (4-week-old) piglets, by means of oral and intravenous administration of equimolar doses, i.e., 331, 500, and 415 μg/kg bodyweight, respectively. Plasma and urine were sampled pre- and post-administration and were quantitatively analyzed for ZEN, ZEN14G, ZEN14S, and in vivo metabolites by liquid chromatography-high-resolution mass spectrometry. Tailor-made TK models were elaborated to process data. A statistical comparison of the results was performed with TK data obtained in a previously reported study in pigs of 8 weeks of age. Additionally, porcine plasma protein binding was determined to support TK findings. The TK results for ZEN, ZEN14G, and ZEN14S, obtained in 4- and 8-week-old pigs, revealed significant age-related differences, based on differences in intestinal permeability, body fat content, gastrointestinal transit time, and biotransformation, with a special emphasis on an increased absorbed fraction of ZEN14G, i.e., 94 vs 61% in 4- compared to 8-week-old pigs. Since the growing pig has been reported to be a suitable pediatric animal model for humans concerning TK processes, these results may contribute to refine the risk assessment concerning modified ZEN forms in juvenile animals and humans.
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Affiliation(s)
- Amelie Catteuw
- Department of Pharmacology, Toxicology and Biochemistry, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Mathias Devreese
- Department of Pharmacology, Toxicology and Biochemistry, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Siegrid De Baere
- Department of Pharmacology, Toxicology and Biochemistry, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Gunther Antonissen
- Department of Pharmacology, Toxicology and Biochemistry, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | | | - Lada Ivanova
- Toxinology Research Group, Norwegian Veterinary Institute, Ullevålsveien 68, 0454 Oslo, Norway
| | - Silvio Uhlig
- Toxinology Research Group, Norwegian Veterinary Institute, Ullevålsveien 68, 0454 Oslo, Norway
| | - Ann Martens
- Department of Surgery and Anaesthesiology of Domestic Animals, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Sarah De Saeger
- Department of Bioanalysis, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Marthe De Boevre
- Department of Bioanalysis, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Siska Croubels
- Department of Pharmacology, Toxicology and Biochemistry, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
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12
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Ambrosio CMS, Contreras-Castillo CJ, Da Gloria EM. In vitro mechanism of antibacterial action of a citrus essential oil on an enterotoxigenic Escherichia coli and Lactobacillus rhamnosus. J Appl Microbiol 2020; 129:541-553. [PMID: 32271977 DOI: 10.1111/jam.14660] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 03/26/2020] [Accepted: 03/31/2020] [Indexed: 01/18/2023]
Abstract
AIM This study investigated the in vitro mechanism of action of a commercial citrus EO, Brazilian orange terpenes (BOT), on an enterotoxigenic Escherichia coli (ETEC) isolated from pig gut and on Lactobacillus rhamnosus. METHODS AND RESULTS Firstly, bacteria were exposed sequentially to BOT every 3 h (three times) at sub-minimal inhibitory concentrations and results showed that sequential exposure to BOT provoked a higher reduction of bacteria viability than a single exposure and the reduction of ETEC viability was higher compared to that of L. rhamnosus. Then, evaluation of the BOT effects on the cell membrane permeability and integrity, indicated that BOT increased the membrane permeability and caused disruptive effects on the integrity of bacterial cells as reflected by an increase of the relative electric conductivity and the release of essential cell constituents. Interestingly, BOT effects were more pronounced on the ETEC than on L. rhamnosus. This was ratified by scanning electron microscopy, which showed more noticeable morphological damages and disturbances on ETEC cells than on the L. rhamnosus cells. Limonene was detected as the major compound in BOT by polar/nonpolar GC-MS (78·65%/79·38%). CONCLUSIONS Results revealed that the probable mechanism of the selective antibacterial action of the citrus EO, BOT, can be described as altering more remarkable the permeability and integrity of the cytoplasmic membrane as well as the external structure of ETEC cells than L. rhamnosus cells. SIGNIFICANCE AND IMPACT OF THE STUDY This study provides information about the mechanism of antibacterial action displayed by a citrus EO, a by-product of the citrus processing industry, as a natural alternative to antibiotics used in pig production sector to combat pathogens such as ETECs.
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Affiliation(s)
- C M S Ambrosio
- Department of Agri-Food Industry, Food and Nutrition, "Luiz de Queiroz" College of Agriculture, University of São Paulo, São Paulo, Brazil
| | - C J Contreras-Castillo
- Department of Agri-Food Industry, Food and Nutrition, "Luiz de Queiroz" College of Agriculture, University of São Paulo, São Paulo, Brazil
| | - E M Da Gloria
- Department of Biological Science, "Luiz de Queiroz" College of Agriculture, University of São Paulo, São Paulo, Brazil
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13
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Investigation of age-related differences in toxicokinetic processes of deoxynivalenol and deoxynivalenol-3-glucoside in weaned piglets. Arch Toxicol 2019; 94:417-425. [PMID: 31834428 DOI: 10.1007/s00204-019-02644-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 12/04/2019] [Indexed: 10/25/2022]
Abstract
Age-related differences in toxicokinetic processes of deoxynivalenol (DON) and deoxynivalenol-3-glucoside (DON3G) were studied. DON3G [55.7 µg/kg bodyweight (BW)] and an equimolar dose of DON (36 µg/kg BW) were administered to weaned piglets (4 weeks old) by single intravenous and oral administration in a double two-way cross-over design. Systemic and portal blood was sampled at different time points pre- and post-administration and plasma concentrations of DON, DON3G and their metabolites were quantified using validated liquid chromatography-tandem mass spectrometry (LC-MS/MS) and liquid chromatography-high-resolution mass spectrometry (LC-HRMS) methods. Data were processed using tailor-made compartmental toxicokinetic (TK) models to accurately estimate TK parameters. Results were statistically compared to data obtained in a previous study on 11-week-old pigs using identical experimental conditions. Significant age-related differences in intestinal and systemic exposure to both DON and DON3G were noted. Most remarkably, a significant difference was found for the absorbed fraction of DON3G, after presystemic hydrolysis to DON, in weaned piglets compared to 11-week-old piglets (83% vs 16%, respectively), assumed to be mainly attributed to the higher intestinal permeability of weaned piglets. Other differences in TK parameters could be assigned to a higher water/fat body ratio and longer gastrointestinal transit time of weaned piglets. Results may further refine current risk assessment concerning DON and DON3G in animals. Additionally, since piglets possibly serve as a human paediatric surrogate model, results may be extrapolated to human infants.
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14
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In vivo evaluation of targeted delivery of biological agents using barium sulfate. Int J Pharm 2019; 572:118801. [PMID: 31678529 DOI: 10.1016/j.ijpharm.2019.118801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 10/10/2019] [Accepted: 10/13/2019] [Indexed: 12/11/2022]
Abstract
This study was aimed to monitor the transit through the intestine by X-ray imaging using barium sulfate (BS) as tracer. The in vitro features of monolithic tablets were correlated with their in vivo behavior in order to provide a tool for the development of targeted formulations containing macromolecular bioactive agents. The impact of BS on various matrices (neutral, ionic) was studied in simulated fluids using the disintegration time (DT) as main parameter. Dry tablets were characterized by spectroscopic methods (X-ray diffraction and Infra-Red) and scanning electron microscopy (SEM). The selected formulations were followed in a beagle dog model. The in vivo and in vitro DT of tablets formulated with BS were compared. Results: anionic excipients carboxymethylcellulose (CMC) and carboxymethylstarch (CMS) protected the active ingredient from the gastric acidity, ensuring its targeted delivery in the intestine. The SEM analysis, before and after transit in simulated fluids, showed that BS remained in the tablets allowing their good follow-up in vivo. The incorporation of 30% protein in tablets with 40% BS had no impact on their behavior. In conclusion, BS and X-ray imagery could be a good alternative to scintigraphy for development of targeted formulations containing high molecular weight bioactive agents.
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15
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Baby-SPIME: A dynamic in vitro piglet model mimicking gut microbiota during the weaning process. J Microbiol Methods 2019; 167:105735. [PMID: 31669849 DOI: 10.1016/j.mimet.2019.105735] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 09/23/2019] [Accepted: 10/06/2019] [Indexed: 12/26/2022]
Abstract
The study aimed to adapt the SHIME® model, developed to simulate human digestion and fermentation, to a baby-SPIME (baby Simulator of Pig Intestinal Microbial Ecosystem). What constitutes a unique feature of this model is its twofold objective of introducing an ileal microbial community and mimicking a dietary weaning transition. This model should then be ideally suited to test the dietary weaning strategies of piglets in vitro. Regarding the microbiota, the main phyla making up the model were Firmicutes, Bacteroidetes and Proteobacteria although Bacteroidetes decreased after inoculation (p = 0.043 in ileum, p = 0.021 in colon) and Delta-Proteobacteria were favoured (p = 0.083 in ileum, p = 0.043 in colon) compared to Gamma-Proteobacteria. The designed model led to a low representation of Bacilli - especially Lactobacillus sp. in the ileum and a weak representation of Bacteroidia in the proximal colon. However, Mitsuokella and Prevotella were part of the major genera of the model along with Bifidobacterium, Fusobacterium, Megasphaera and Bacteroides. As a result of weaning, two major changes - normally occurring in vivo - were detected in the system: firstly, Firmicutes diminished when Bacteroidetes increased particularly in the proximal colon; secondly, Bacteroides decreased and Prevotella increased (mean value for four runs). In terms of metabolite production, while a ratio acetate: propionate: butyrate of 60:26:14 was obtained in post-weaned colon, the expected inversion of the ratio propionate: butyrate in the post-weaned ileum was unfortunately not observed. To conclude, the so-called baby-SPIME model meets expectations regarding the resident microbiota of the proximal colon bioreactor and the metabolites produced thereof. In terms of the evolution of major groups of bacteria, the in vitro weaning process appeared to be successful. However, higher concentration of butyric acid would have been expected in ileum part of newly weaned piglets, as observed in vivo. The microbiota in the ileum bioreactor seemed in fact to act like a pre-colon. This suggests that microbial profile in ileum bioreactor had to be improved.
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16
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Abramson A, Caffarel-Salvador E, Soares V, Minahan D, Tian RY, Lu X, Dellal D, Gao Y, Kim S, Wainer J, Collins J, Tamang S, Hayward A, Yoshitake T, Lee HC, Fujimoto J, Fels J, Frederiksen MR, Rahbek U, Roxhed N, Langer R, Traverso G. A luminal unfolding microneedle injector for oral delivery of macromolecules. Nat Med 2019; 25:1512-1518. [PMID: 31591601 DOI: 10.1038/s41591-019-0598-9] [Citation(s) in RCA: 129] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 08/28/2019] [Indexed: 12/12/2022]
Abstract
Insulin and other injectable biologic drugs have transformed the treatment of patients suffering from diabetes1,2, yet patients and healthcare providers often prefer to use and prescribe less effective orally dosed medications3-5. Compared with subcutaneously administered drugs, oral formulations create less patient discomfort4, show greater chemical stability at high temperatures6, and do not generate biohazardous needle waste7. An oral dosage form for biologic medications is ideal; however, macromolecule drugs are not readily absorbed into the bloodstream through the gastrointestinal tract8. We developed an ingestible capsule, termed the luminal unfolding microneedle injector, which allows for the oral delivery of biologic drugs by rapidly propelling dissolvable drug-loaded microneedles into intestinal tissue using a set of unfolding arms. During ex vivo human and in vivo swine studies, the device consistently delivered the microneedles to the tissue without causing complete thickness perforations. Using insulin as a model drug, we showed that, when actuated, the luminal unfolding microneedle injector provided a faster pharmacokinetic uptake profile and a systemic uptake >10% of that of a subcutaneous injection over a 4-h sampling period. With the ability to load a multitude of microneedle formulations, the device can serve as a platform to orally deliver therapeutic doses of macromolecule drugs.
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Affiliation(s)
- Alex Abramson
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Ester Caffarel-Salvador
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA.,Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Vance Soares
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Daniel Minahan
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Ryan Yu Tian
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Xiaoya Lu
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - David Dellal
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA.,Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Yuan Gao
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Soyoung Kim
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Jacob Wainer
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Joy Collins
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Siddartha Tamang
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Alison Hayward
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA.,Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Tadayuki Yoshitake
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, USA.,Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Hsiang-Chieh Lee
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, USA.,Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - James Fujimoto
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, USA.,Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Johannes Fels
- Global Research Technologies, Global Drug Discovery, Måløv, Denmark.,Device R&D, Novo Nordisk, Måløv, Denmark
| | | | - Ulrik Rahbek
- Global Research Technologies, Global Drug Discovery, Måløv, Denmark.,Device R&D, Novo Nordisk, Måløv, Denmark
| | - Niclas Roxhed
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA.,Department of Micro and Nanosystems, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Robert Langer
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA. .,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA. .,Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA. .,Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA. .,Media Lab, Massachusetts Institute of Technology, Cambridge, MA, USA.
| | - Giovanni Traverso
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA. .,David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA. .,Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA. .,Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
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17
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Chen L, Shi G, Chen G, Li J, Li M, Zou C, Fang C, Li C. Transcriptome Analysis Suggests the Roles of Long Intergenic Non-coding RNAs in the Growth Performance of Weaned Piglets. Front Genet 2019; 10:196. [PMID: 30936891 PMCID: PMC6431659 DOI: 10.3389/fgene.2019.00196] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 02/25/2019] [Indexed: 11/19/2022] Open
Abstract
Long intergenic non-coding RNAs (lincRNAs) have been considered to play a key regulatory role in various biological processes. An increasing number of studies have utilized transcriptome analysis to obtain lincRNAs with functions related to cancer, but lincRNAs affecting growth rates in weaned piglets are rarely described. Although lincRNAs have been systematically identified in various mouse tissues and cell lines, studies of lincRNA in pigs remain rare. Therefore, identifying and characterizing novel lincRNAs affecting the growth performance of weaned piglets is of great importance. Here, we reconstructed 101,988 lincRNA transcripts and identified 1,078 lincRNAs in two groups of longissimus dorsi muscle (LDM) and subcutaneous fat (SF) based on published RNA-seq datasets. These lincRNAs exhibit typical characteristics, such as shorter lengths and lower expression relative to protein-encoding genes. Gene ontology analysis revealed that some lincRNAs could be involved in weaned piglet related processes, such as insulin resistance and the AMPK signaling pathway. We also compared the positional relationship between differentially expressed lincRNAs (DELs) and quantitative trait loci (QTL) and found that some of DELs may play an important role in piglet growth and development. Our work details part of the lincRNAs that may affect the growth performance of weaned piglets and promotes future studies of lincRNAs for molecular-assisted development in weaned piglets.
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Affiliation(s)
- Lin Chen
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Gaoli Shi
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Guoting Chen
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jingxuan Li
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Mengxun Li
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Cheng Zou
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Chengchi Fang
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Changchun Li
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China.,The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
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18
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Liu X, Steiger C, Lin S, Parada GA, Liu J, Chan HF, Yuk H, Phan NV, Collins J, Tamang S, Traverso G, Zhao X. Ingestible hydrogel device. Nat Commun 2019; 10:493. [PMID: 30700712 PMCID: PMC6353937 DOI: 10.1038/s41467-019-08355-2] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 12/20/2018] [Indexed: 11/09/2022] Open
Abstract
Devices that interact with living organisms are typically made of metals, silicon, ceramics, and plastics. Implantation of such devices for long-term monitoring or treatment generally requires invasive procedures. Hydrogels offer new opportunities for human-machine interactions due to their superior mechanical compliance and biocompatibility. Additionally, oral administration, coupled with gastric residency, serves as a non-invasive alternative to implantation. Achieving gastric residency with hydrogels requires the hydrogels to swell very rapidly and to withstand gastric mechanical forces over time. However, high swelling ratio, high swelling speed, and long-term robustness do not coexist in existing hydrogels. Here, we introduce a hydrogel device that can be ingested as a standard-sized pill, swell rapidly into a large soft sphere, and maintain robustness under repeated mechanical loads in the stomach for up to one month. Large animal tests support the exceptional performance of the ingestible hydrogel device for long-term gastric retention and physiological monitoring.
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Affiliation(s)
- Xinyue Liu
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Christoph Steiger
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Shaoting Lin
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - German Alberto Parada
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Ji Liu
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Hon Fai Chan
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong, China
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Hyunwoo Yuk
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Nhi V Phan
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Joy Collins
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Siddartha Tamang
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Giovanni Traverso
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Xuanhe Zhao
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
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19
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Kong YL, Zou X, McCandler CA, Kirtane AR, Ning S, Zhou J, Abid A, Jafari M, Rogner J, Minahan D, Collins JE, McDonnell S, Cleveland C, Bensel T, Tamang S, Arrick G, Gimbel A, Hua T, Ghosh U, Soares V, Wang N, Wahane A, Hayward A, Zhang S, Smith BR, Langer R, Traverso G. 3D-Printed Gastric Resident Electronics. ADVANCED MATERIALS TECHNOLOGIES 2018; 4:1800490. [PMID: 32010758 PMCID: PMC6988123 DOI: 10.1002/admt.201800490] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 11/06/2018] [Indexed: 05/20/2023]
Abstract
Long-term implantation of biomedical electronics into the human body enables advanced diagnostic and therapeutic functionalities. However, most long-term resident electronics devices require invasive procedures for implantation as well as a specialized receiver for communication. Here, a gastric resident electronic (GRE) system that leverages the anatomical space offered by the gastric environment to enable residence of an orally delivered platform of such devices within the human body is presented. The GRE is capable of directly interfacing with portable consumer personal electronics through Bluetooth, a widely adopted wireless protocol. In contrast to the passive day-long gastric residence achieved with prior ingestible electronics, advancement in multimaterial prototyping enables the GRE to reside in the hostile gastric environment for a maximum of 36 d and maintain ≈15 d of wireless electronics communications as evidenced by the studies in a porcine model. Indeed, the synergistic integration of reconfigurable gastric-residence structure, drug release modules, and wireless electronics could ultimately enable the next-generation remote diagnostic and automated therapeutic strategies.
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Affiliation(s)
- Yong Lin Kong
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
| | - Xingyu Zou
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Caitlin A. McCandler
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Ameya R. Kirtane
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Shen Ning
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
| | - Jianlin Zhou
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Abubakar Abid
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Mousa Jafari
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Jaimie Rogner
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Daniel Minahan
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Joy E. Collins
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Shane McDonnell
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Cody Cleveland
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Taylor Bensel
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Siid Tamang
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Graham Arrick
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Alla Gimbel
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Tiffany Hua
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Udayan Ghosh
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
| | - Vance Soares
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Nancy Wang
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Aniket Wahane
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Alison Hayward
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Shiyi Zhang
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Brian R. Smith
- Department of Mechanical Engineering University of Utah Salt Lake City, UT 84112, USA
- Boston University School of Medicine 72 E Concord St, Boston, MA 02118, USA
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
| | - Robert Langer
- Charles Stark Draper Laboratory Cambridge, MA 02139, USA
| | - Giovanni Traverso
- Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge, MA 02139, USA
- Division of Gastroenterology Brigham and Women’s Hospital Harvard Medical School Boston, MA 02115, USA
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20
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Cao D, Sooryanarain H, Yugo DM, Tian D, Rogers AJ, Heffron CL, Thimmasandra Narayanappa A, LeRoith T, Overend C, Matzinger SR, Elankumaran S, Hermann JR, Patterson AR, Meng XJ. Evaluation of the pathogenicity of mammalian orthoreovirus type 3 (MRV3) in germ-free gnotobiotic pigs and of the efficacy of an inactivated vaccine against MRV3 infection in neonatal conventional piglets. Vet Microbiol 2018; 224:23-30. [PMID: 30269786 DOI: 10.1016/j.vetmic.2018.08.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/10/2018] [Accepted: 08/20/2018] [Indexed: 12/23/2022]
Abstract
A novel U.S. strain of mammalian orthoreovirus type 3 (MRV3) isolated from diarrheic pigs in 2015 was reportedly highly pathogenic in pigs. In this study, we first developed an inactivated MRV3 vaccine and determined its protective efficacy against MRV3 infection in conventional neonatal piglets. A pathogenicity study was also conducted in gnotobiotic pigs to further assess the pathogenicity of MRV3. To evaluate if piglets could be protected against MRV3 infection after immunization of pregnant sows with an inactivated MRV3 vaccine, pregnant sows were vaccinated with 2 or 3 doses of the vaccine or with PBS buffer. Four-day-old piglets born to vaccinated and unvaccinated sows were subsequently challenged with MRV3. The results showed that piglets born from vaccinated sows had lower levels of fecal viral RNA shedding at 1, 3, and 4 days post-challenge, suggesting that the inactivated MRV3 vaccine can reduce MRV3 replication. Surprisingly, although the conventional piglets were infected, they did not develop severe enteric disease as reported previously. Therefore, in an effort to further definitively assess the pathogenicity of MRV3, we experimentally infected gnotobiotic pigs, a more sensitive model for pathogenicity study, with the wild-type MRV3 virus. The infected gnotobiotic piglets all survived and exhibited only very mild diarrhea in some pigs. Taken together, the results indicate that the novel strain of MRV3 recently isolated in the United States infected but caused only very mild diarrhea in pigs, and that maternal immunity acquired from sows vaccinated with an inactivated vaccine can reduce MRV3 replication in neonatal pigs.
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Affiliation(s)
- Dianjun Cao
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Harini Sooryanarain
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Danielle M Yugo
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Debin Tian
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Adam J Rogers
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - C Lynn Heffron
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Athmaram Thimmasandra Narayanappa
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Tanya LeRoith
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Christopher Overend
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Shannon R Matzinger
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Subbiah Elankumaran
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | | | | | - Xiang-Jin Meng
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States.
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21
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Henze LJ, Koehl NJ, O'Shea JP, Kostewicz ES, Holm R, Griffin BT. The pig as a preclinical model for predicting oral bioavailability and in vivo performance of pharmaceutical oral dosage forms: a PEARRL review. ACTA ACUST UNITED AC 2018; 71:581-602. [PMID: 29635685 DOI: 10.1111/jphp.12912] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 03/03/2018] [Indexed: 12/21/2022]
Abstract
OBJECTIVES In pharmaceutical drug development, preclinical tests in animal models are essential to demonstrate whether the new drug is orally bioavailable and to gain a first insight into in vivo pharmacokinetic parameters that can subsequently be used to predict human values. Despite significant advances in the development of bio-predictive in vitro models and increasing ethical expectations for reducing the number of animals used for research purposes, there is still a need for appropriately selected pre-clinical in vivo testing to provide guidance on the decision to progress to testing in humans. The selection of the appropriate animal models is essential both to maximise the learning that can be obtained from such experiments and to avoid unnecessary testing in a range of species. KEY FINDINGS The present review, provides an insight into the suitability of the pig model for predicting oral bioavailability in humans, by comparing the conditions in the GIT. It also contains a comparison between the bioavailability of compounds dosed to both humans and pigs, to provide an insight into the relative correlation and examples on why a lack of correlation may be observed. SUMMARY While there is a general trend towards predicting human bioavailability from pig data, there is considerable variability in the data set, most likely reflecting species specific differences in individual drug metabolism. Nonetheless, the correlation between pigs vs. humans was comparable to that reported for dogs vs. humans. The presented data demonstrate the suitability of the pig as a preclinical model to predict bioavailability in human.
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Affiliation(s)
- Laura J Henze
- School of Pharmacy, University College Cork, Cork, Ireland
| | - Niklas J Koehl
- School of Pharmacy, University College Cork, Cork, Ireland
| | | | - Edmund S Kostewicz
- Institute of Pharmaceutical Technology, Goethe University, Frankfurt am Main, Germany
| | - René Holm
- Drug Product Development, Janssen Research and Development, Johnson & Johnson, Beerse, Belgium
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22
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Development of an oral once-weekly drug delivery system for HIV antiretroviral therapy. Nat Commun 2018; 9:2. [PMID: 29317618 PMCID: PMC5760734 DOI: 10.1038/s41467-017-02294-6] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Accepted: 11/16/2017] [Indexed: 01/07/2023] Open
Abstract
The efficacy of antiretroviral therapy is significantly compromised by medication non-adherence. Long-acting enteral systems that can ease the burden of daily adherence have not yet been developed. Here we describe an oral dosage form composed of distinct drug–polymer matrices which achieved week-long systemic drug levels of the antiretrovirals dolutegravir, rilpivirine and cabotegravir in a pig. Simulations of viral dynamics and patient adherence patterns indicate that such systems would significantly reduce therapeutic failures and epidemiological modelling suggests that using such an intervention prophylactically could avert hundreds of thousands of new HIV cases. In sum, weekly administration of long-acting antiretrovirals via a novel oral dosage form is a promising intervention to help control the HIV epidemic worldwide. Poor adherence to daily antiretrovirals can significantly affect treatment efficacy, but oral long-acting antiretrovirals are currently lacking. Here, the authors develop a once-weekly oral dosage form for anti-HIV drugs, assess its pharmacokinetics in pigs, and model its impact on viral resistance and disease epidemics.
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23
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Bellinger AM, Jafari M, Grant TM, Zhang S, Slater HC, Wenger EA, Mo S, Lee YAL, Mazdiyasni H, Kogan L, Barman R, Cleveland C, Booth L, Bensel T, Minahan D, Hurowitz HM, Tai T, Daily J, Nikolic B, Wood L, Eckhoff PA, Langer R, Traverso G. Oral, ultra-long-lasting drug delivery: Application toward malaria elimination goals. Sci Transl Med 2017; 8:365ra157. [PMID: 27856796 DOI: 10.1126/scitranslmed.aag2374] [Citation(s) in RCA: 152] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 10/25/2016] [Indexed: 12/29/2022]
Abstract
Efforts at elimination of scourges, such as malaria, are limited by the logistic challenges of reaching large rural populations and ensuring patient adherence to adequate pharmacologic treatment. We have developed an oral, ultra-long-acting capsule that dissolves in the stomach and deploys a star-shaped dosage form that releases drug while assuming a geometry that prevents passage through the pylorus yet allows passage of food, enabling prolonged gastric residence. This gastric-resident, drug delivery dosage form releases small-molecule drugs for days to weeks and potentially longer. Upon dissolution of the macrostructure, the components can safely pass through the gastrointestinal tract. Clinical, radiographic, and endoscopic evaluation of a swine large-animal model that received these dosage forms showed no evidence of gastrointestinal obstruction or mucosal injury. We generated long-acting formulations for controlled release of ivermectin, a drug that targets malaria-transmitting mosquitoes, in the gastric environment and incorporated these into our dosage form, which then delivered a sustained therapeutic dose of ivermectin for up to 14 days in our swine model. Further, by using mathematical models of malaria transmission that incorporate the lethal effect of ivermectin against malaria-transmitting mosquitoes, we demonstrated that this system will boost the efficacy of mass drug administration toward malaria elimination goals. Encapsulated, gastric-resident dosage forms for ultra-long-acting drug delivery have the potential to revolutionize treatment options for malaria and other diseases that affect large populations around the globe for which treatment adherence is essential for efficacy.
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Affiliation(s)
- Andrew M Bellinger
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.,Lyndra Inc., Watertown, MA 02472, USA
| | - Mousa Jafari
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Tyler M Grant
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Lyndra Inc., Watertown, MA 02472, USA
| | - Shiyi Zhang
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Hannah C Slater
- Department of Infectious Disease Epidemiology, MRC (Medical Research Council) Centre for Outbreak Analysis and Modelling, Imperial College London, London, U.K
| | | | - Stacy Mo
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Young-Ah Lucy Lee
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Hormoz Mazdiyasni
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Lawrence Kogan
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Ross Barman
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Cody Cleveland
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Lucas Booth
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Taylor Bensel
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Daniel Minahan
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Haley M Hurowitz
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Tammy Tai
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Johanna Daily
- Division of Infectious Diseases, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Boris Nikolic
- Biomatics Capital, 1107 1st Avenue, Apartment 1305, Seattle, WA 98101, USA
| | - Lowell Wood
- Institute for Disease Modeling, Bellevue, WA 98005, USA
| | | | - Robert Langer
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. .,Media Lab, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Giovanni Traverso
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. .,Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.,Division of Gastroenterology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
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24
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A review on early gut maturation and colonization in pigs, including biological and dietary factors affecting gut homeostasis. Anim Feed Sci Technol 2017. [DOI: 10.1016/j.anifeedsci.2017.06.011] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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25
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Abstract
Ingestible electronics have revolutionized the standard of care for a variety of health conditions. Extending the capacity and safety of these devices, and reducing the costs of powering them, could enable broad deployment of prolonged monitoring systems for patients. Although prior biocompatible power harvesting systems for in vivo use have demonstrated short minute-long bursts of power from the stomach, not much is known about the capacity to power electronics in the longer term and throughout the gastrointestinal tract. Here, we report the design and operation of an energy-harvesting galvanic cell for continuous in vivo temperature sensing and wireless communication. The device delivered an average power of 0.23 μW per mm2 of electrode area for an average of 6.1 days of temperature measurements in the gastrointestinal tract of pigs. This power-harvesting cell has the capacity to provide power for prolonged periods of time to the next generation of ingestible electronic devices located in the gastrointestinal tract.
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26
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Lackeyram D, Young D, Kim CJ, Yang C, Archbold TL, Mine Y, Fan MZ. Interleukin-10 is differentially expressed in the small intestine and the colon experiencing chronic inflammation and ulcerative colitis induced by dextran sodium sulfate in young pigs. Physiol Res 2016; 66:147-162. [PMID: 27782738 DOI: 10.33549/physiolres.933259] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Intestinal inflammation induced with dextran sodium sulfate (DSS) is used to study acute or chronic ulcerative colitis in animal models. Decreased gut tissue anti-inflammatory cytokine IL-10 concentration and mRNA abundance are associated with the development of chronic bowel inflammation. Twelve piglets of 3 days old were fitted with an intragastric catheter and randomly allocated into control and DSS groups by administrating either sterile saline or 1.25 g of DSS/kg body weight (BW) in saline per day, respectively, for 10 days. Growth rate and food conversion efficiency were reduced (p<0.05) in the DSS piglets compared with the control group. Quantitative histopathological grading of inflammation in the jejunum and colon collectively showed that the DSS treatment resulted in 12 fold greater (p<0.05) inflammation severity scoring in the colon than in the jejunum, indicative of chronic ulcerative colitis in the colon. Upper gut permeability endpoint was 27.4 fold higher (p<0.05) in the DSS group compared with the control group. The DSS group had higher concentrations and mRNA abundances (p<0.05) of TNF-alpha and IL-6 in the jejunal and colonic tissues compared with the control group. Colonic concentration and mRNA abundance of IL-10 were reduced (p<0.05), however, jejunal IL-10 mRNA abundance was increased (p<0.05) in the DSS group compared with the control group. In conclusion, administration of DSS at 1.25 g/kg BW for 10 days respectively induced acute inflammation in the jejunum and chronic inflammation and ulcerative colitis in the colon with substantially decreased colonic concentration and mRNA abundance of IL-10 in the young pigs, mimicking the IL-10 expression pattern in humans Associated with chronic bowel inflammation.
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Affiliation(s)
- D Lackeyram
- Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada.
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27
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Tan AY, Sourial M, Hutson JM, Southwell BR. Non-invasive measures of oral-rectal transit in young pigs. Livest Sci 2016. [DOI: 10.1016/j.livsci.2016.03.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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28
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Schoellhammer CM, Langer R, Traverso G. Of microneedles and ultrasound: Physical modes of gastrointestinal macromolecule delivery. Tissue Barriers 2016; 4:e1150235. [PMID: 27358752 DOI: 10.1080/21688370.2016.1150235] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 01/28/2016] [Accepted: 01/28/2016] [Indexed: 02/03/2023] Open
Affiliation(s)
- Carl M Schoellhammer
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA; The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Robert Langer
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA; The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Giovanni Traverso
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA; The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA; Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
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29
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Strube ML, Jensen TK, Meyer AS, Boye M. In situ prebiotics: enzymatic release of galacto-rhamnogalacturonan from potato pulp in vivo in the gastrointestinal tract of the weaning piglet. AMB Express 2015; 5:66. [PMID: 26475351 PMCID: PMC4608949 DOI: 10.1186/s13568-015-0152-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 10/09/2015] [Indexed: 11/10/2022] Open
Abstract
Prebiotics may be efficient for prevention of intestinal infections in humans and animals by increasing the levels of beneficial bacteria and thereby improving gut health. Using purified prebiotics may however not be cost-effective in the livestock production industry. Instead, prebiotic fibres may be released directly in the gastro-intestinal tract by feeding enzymes with a suitable substrate and allowing the prebiotics to be produced in situ. Using low doses, 0.03 % enzyme-to-substrate ratio, of the enzymes pectin lyase and polygalacturonase in combination with potato pulp, a low-value industrial by-product, we show that high molecular weight galacto-rhamnogalacturonan can be solubilized in the stomach of weaning piglets. The release of this fiber is in the order of 22–38 % of the theoretical amount, achieved within 20 min. The catalysis takes place mainly in the stomach of the animal and is then followed by distribution through the small intestines. To our knowledge, this is the first paper describing targeted production of prebiotics in an animal model.
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Traverso G, Schoellhammer CM, Schroeder A, Maa R, Lauwers GY, Polat BE, Anderson DG, Blankschtein D, Langer R. Microneedles for drug delivery via the gastrointestinal tract. J Pharm Sci 2014; 104:362-7. [PMID: 25250829 DOI: 10.1002/jps.24182] [Citation(s) in RCA: 106] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 08/30/2014] [Accepted: 09/02/2014] [Indexed: 12/22/2022]
Abstract
Both patients and physicians prefer the oral route of drug delivery. The gastrointestinal (GI) tract, though, limits the bioavailability of certain therapeutics because of its protease and bacteria-rich environment as well as general pH variability from pH 1 to 7. These extreme environments make oral delivery particularly challenging for the biologic class of therapeutics. Here, we demonstrate proof-of-concept experiments in swine that microneedle-based delivery has the capacity for improved bioavailability of a biologically active macromolecule. Moreover, we show that microneedle-containing devices can be passed and excreted from the GI tract safely. These findings strongly support the success of implementation of microneedle technology for use in the GI tract.
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Affiliation(s)
- Giovanni Traverso
- Division of Gastroenterology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts; Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts; Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts
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Liu H, Zhang J, Zhang S, Yang F, Thacker PA, Zhang G, Qiao S, Ma X. Oral administration of Lactobacillus fermentum I5007 favors intestinal development and alters the intestinal microbiota in formula-fed piglets. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:860-6. [PMID: 24404892 DOI: 10.1021/jf403288r] [Citation(s) in RCA: 123] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The present study was conducted to evaluate the effects of early administration of Lactobacillus fermentum I5007 on intestinal development and microbial composition in the gastrointestinal tract using a neonatal piglet model. Full-term 4 day old piglets, fed with milk replacer, were divided into a control group (given placebo of 0.1% peptone water) and a L. fermentum I5007 group (dosed daily with 6 × 10(9) CFU/mL L. fermentum I5007). The experiment lasted 14 days. On day 14, a significant increase in the jejunum villous height (583 ± 33 vs 526 ± 18) and increases in the concentrations of butyrate (7.55 ± 0.55 vs 5.33 ± 0.39) and branched chain fatty acids in the colonic digesta were observed in piglets in the L. fermentum I5007 treatment (P < 0.05). mRNA expression of IL-1β (1.29 ± 0.29 vs. 0.62 ± 0.07) in the ileum were lower after 14 days of treatment with L. fermentum I5007. Denaturing gradient gel electrophoresis (DGGE) revealed that L. fermentum I5007 affected the colonic microbial communities on day 14 and, in particular, reduced numbers of Clostridium sp. L. fermentum I5007 play a positive role in gut development in neonatal piglets by modulating microbial composition, intestinal development, and immune status. L. fermentum I5007 may be useful as a probiotic for application in neonatal piglets.
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Affiliation(s)
- Hong Liu
- State Key Laboratory of Animal Nutrition, China Agricultural University , No. 2, Yuanmingyuan West Road, Beijing 100193, China
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Kolotilin I, Kaldis A, Devriendt B, Joensuu J, Cox E, Menassa R. Production of a subunit vaccine candidate against porcine post-weaning diarrhea in high-biomass transplastomic tobacco. PLoS One 2012; 7:e42405. [PMID: 22879967 PMCID: PMC3411772 DOI: 10.1371/journal.pone.0042405] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Accepted: 07/05/2012] [Indexed: 11/20/2022] Open
Abstract
Post-weaning diarrhea (PWD) in piglets is a major problem in piggeries worldwide and results in severe economic losses. Infection with Enterotoxigenic Escherichia coli (ETEC) is the key culprit for the PWD disease. F4 fimbriae of ETEC are highly stable proteinaceous polymers, mainly composed of the major structural subunit FaeG, with a capacity to evoke mucosal immune responses, thus demonstrating a potential to act as an oral vaccine against ETEC-induced porcine PWD. In this study we used a transplastomic approach in tobacco to produce a recombinant variant of the FaeG protein, rFaeG(ntd/dsc), engineered for expression as a stable monomer by N-terminal deletion and donor strand-complementation (ntd/dsc). The generated transplastomic tobacco plants accumulated up to 2.0 g rFaeG(ntd/dsc) per 1 kg fresh leaf tissue (more than 1% of dry leaf tissue) and showed normal phenotype indistinguishable from wild type untransformed plants. We determined that chloroplast-produced rFaeG(ntd/dsc) protein retained the key properties of an oral vaccine, i.e. binding to porcine intestinal F4 receptors (F4R), and inhibition of the F4-possessing (F4+) ETEC attachment to F4R. Additionally, the plant biomass matrix was shown to delay degradation of the chloroplast-produced rFaeG(ntd/dsc) in gastrointestinal conditions, demonstrating a potential to function as a shelter-vehicle for vaccine delivery. These results suggest that transplastomic plants expressing the rFaeG(ntd/dsc) protein could be used for production and, possibly, delivery of an oral vaccine against porcine F4+ ETEC infections. Our findings therefore present a feasible approach for developing an oral vaccination strategy against porcine PWD.
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Affiliation(s)
- Igor Kolotilin
- Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada
| | - Angelo Kaldis
- Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada
| | - Bert Devriendt
- Laboratory of Veterinary Immunology, Faculty of Veterinary Medicine, Gent University, Merelbeke, Belgium
| | - Jussi Joensuu
- VTT Technical Research Centre of Finland, Espoo, Finland
| | - Eric Cox
- Laboratory of Veterinary Immunology, Faculty of Veterinary Medicine, Gent University, Merelbeke, Belgium
| | - Rima Menassa
- Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada
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Pillay V, Hibbins AR, Choonara YE, du Toit LC, Kumar P, Ndesendo VMK. Orally Administered Therapeutic Peptide Delivery: Enhanced Absorption Through the Small Intestine Using Permeation Enhancers. Int J Pept Res Ther 2012. [DOI: 10.1007/s10989-012-9299-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Heo JM, Opapeju FO, Pluske JR, Kim JC, Hampson DJ, Nyachoti CM. Gastrointestinal health and function in weaned pigs: a review of feeding strategies to control post-weaning diarrhoea without using in-feed antimicrobial compounds. J Anim Physiol Anim Nutr (Berl) 2012; 97:207-37. [PMID: 22416941 DOI: 10.1111/j.1439-0396.2012.01284.x] [Citation(s) in RCA: 461] [Impact Index Per Article: 38.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
For the last several decades, antimicrobial compounds have been used to promote piglet growth at weaning through the prevention of subclinical and clinical disease. There are, however, increasing concerns in relation to the development of antibiotic-resistant bacterial strains and the potential of these and associated resistance genes to impact on human health. As a consequence, European Union (EU) banned the use of antibiotics as growth promoters in swine and livestock production on 1 January 2006. Furthermore, minerals such as zinc (Zn) and copper (Cu) are not feasible alternatives/replacements to antibiotics because their excretion is a possible threat to the environment. Consequently, there is a need to develop feeding programs to serve as a means for controlling problems associated with the weaning transition without using antimicrobial compounds. This review, therefore, is focused on some of nutritional strategies that are known to improve structure and function of gastrointestinal tract and (or) promote post-weaning growth with special emphasis on probiotics, prebiotics, organic acids, trace minerals and dietary protein source and level.
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Affiliation(s)
- J M Heo
- Department of Animal Science, University of Manitoba, Winnipeg, MB, Canada
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Varum FJ, Veiga F, Sousa JS, Basit AW. Mucoadhesive platforms for targeted delivery to the colon. Int J Pharm 2011; 420:11-9. [DOI: 10.1016/j.ijpharm.2011.08.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Revised: 08/03/2011] [Accepted: 08/04/2011] [Indexed: 10/17/2022]
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GODOY C, CASTELLS G, MARTÍ G, CAPECE BPS, PÉREZ F, COLOM H, CRISTÒFOL C. Influence of a pig respiratory disease on the pharmacokinetic behaviour of amoxicillin after oral ad libitum administration in medicated feed. J Vet Pharmacol Ther 2010; 34:265-76. [DOI: 10.1111/j.1365-2885.2010.01220.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Varum FJ, Veiga F, Sousa JS, Basit AW. An investigation into the role of mucus thickness on mucoadhesion in the gastrointestinal tract of pig. Eur J Pharm Sci 2010; 40:335-41. [DOI: 10.1016/j.ejps.2010.04.007] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2010] [Revised: 04/13/2010] [Accepted: 04/14/2010] [Indexed: 12/16/2022]
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Saphier S, Rosner A, Brandeis R, Karton Y. Gastro intestinal tracking and gastric emptying of solid dosage forms in rats using X-ray imaging. Int J Pharm 2010; 388:190-5. [PMID: 20079410 DOI: 10.1016/j.ijpharm.2010.01.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2009] [Revised: 12/28/2009] [Accepted: 01/06/2010] [Indexed: 01/28/2023]
Abstract
The aim of this research was to study the gastrointestinal transit and gastric emptying of non-disintegrating solid dosage forms in rats using X-ray imaging. Commercial gelatin minicapsules were filled with barium sulfate and enterically coated using Eudragit S100. The capsules were administered orally to rats followed by a solution of iodine based contrast agent iopromide. Images were obtained using a standard X-ray camera and digital film processing. Capsules were followed through the GI tract from the stomach to the small intestine, cecum and large intestine and the capsule location could be easily identified. Gastric emptying of different sized capsules was studied. The effect of fasting and time of administration on gastric retention was also studied. It was found that shortened capsules of 3.5 and 4.8mm length were emptied from the stomach whereas the commercial length 7.18mm capsules were retained. Surprisingly, 2.5h post administration more rats retained the capsules in the stomach in the fasted state than in the fed state. We found that X-ray imaging can be used for simple visualization and localization of solid dosage forms in rats in the fed state using shortened commercial minicapsules on rats.
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Affiliation(s)
- Sigal Saphier
- The Department of Organic Chemistry, Israel Institute for Biological Research, Ness-Ziona, Israel.
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Vaucher J, Cerantola Y, Gie O, Letovanec I, Virag N, Demartines N, Gardaz JP, Givel JCR. Electrical colonic stimulation reduces mean transit time in a porcine model. Neurogastroenterol Motil 2010; 22:88-92, e31. [PMID: 19594689 DOI: 10.1111/j.1365-2982.2009.01359.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Electrical stimulation is a new way to treat digestive disorders such as constipation. Colonic propulsive activity can be triggered by battery operated devices. This study aimed to demonstrate the effect of direct electrical colonic stimulation on mean transit time in a chronic porcine model. The impact of stimulation and implanted material on the colonic wall was also assessed. Three pairs of electrodes were implanted into the caecal wall of 12 anaesthetized pigs. Reference colonic transit time was determined by radiopaque markers for each pig before implantation. It was repeated 4 weeks after implantation with sham stimulation and 5 weeks after implantation with electrical stimulation. Aboral sequential trains of 1-ms pulse width (10 V; 120 Hz) were applied twice daily for 6 days, using an external battery operated stimulator. For each course of markers, a mean value was computed from transit times obtained from individual pig. Microscopic examination of the caecum was routinely performed after animal sacrifice. A reduction of mean transit time was observed after electrical stimulation (19 +/- 13 h; mean +/- SD) when compared to reference (34 +/- 7 h; P = 0.045) and mean transit time after sham stimulation (36 +/- 9 h; P = 0.035). Histological examination revealed minimal chronic inflammation around the electrodes. Colonic transit time measured in a chronic porcine model is reduced by direct sequential electrical stimulation. Minimal tissue lesion is elicited by stimulation or implanted material. Electrical colonic stimulation could be a promising approach to treat specific disorders of the large bowel.
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Affiliation(s)
- J Vaucher
- Department of Visceral Surgery, University Hospital Lausanne, Lausanne, Switzerland.
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40
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Barth S, Duncker S, Hempe J, Breves G, Baljer G, Bauerfeind R. Escherichia coliNissle 1917 for probiotic use in piglets: evidence for intestinal colonization. J Appl Microbiol 2009; 107:1697-710. [DOI: 10.1111/j.1365-2672.2009.04361.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Snoeck V, Cox E, Verdonck F, Joensuu JJ, Goddeeris BM. Influence of porcine intestinal pH and gastric digestion on antigenicity of F4 fimbriae for oral immunisation. Vet Microbiol 2004; 98:45-53. [PMID: 14738781 DOI: 10.1016/j.vetmic.2003.10.020] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Newly weaned piglets can be orally immunised against F4+ enterotoxigenic Escherichia coli (ETEC) infection with F4 fimbriae. However, to efficiently develop a vaccine against ETEC induced postweaning diarrhoea, knowledge of the stability of the F4 fimbriae to different pH and gastric digestion is needed. The gastrointestinal pH in suckling and recently weaned piglets was measured and the stability of F4 fimbriae to different pH and to pepsin was assessed in vitro. In the stomach the lowest pH was found in the fundus gland region. Gastric pH values below 2.5 were not found in suckling piglets or at the day of weaning, in contrast to piglets 1 and 2 weeks postweaning. Along the first half of the small intestine and in the caecum, a negative correlation was found between pH and age. The F4 fimbriae were stable to pH 1.5 and 2 for 2 h, whereas longer incubation periods resulted in conversion of the multimeric forms into monomers. The F4 fimbriae were partially degraded by incubation for 15-30 min in simulated gastric fluid at pH 1.5 and 2, and completely digested from 3 h onwards. At pH 3, the fimbriae maintained their antigenicity for at least 4h. The results demonstrate that gastric digestion will only have a limited impact on oral immunisation since liquid passes through the stomach relatively quickly (50% within 2 h). However, we previously demonstrated that the transit times are prolonged shortly after weaning. Shortly after weaning it could be necessary to protect the F4 fimbriae against gastric digestion to obtain efficient oral immunisation of the piglets.
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Affiliation(s)
- Veerle Snoeck
- Laboratory of Veterinary Immunology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium.
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