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Pancreatin

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https://www.readbyqxmd.com/read/29622222/screening-of-critical-factors-influencing-the-efficient-hydrolysis-of-zeaxanthin-dipalmitate-in-an-adapted-in-vitro-digestion-model
#1
Xin Wen, Judith Hempel, Ralf M Schweiggert, Yuxiao Wang, Yuanying Ni, Reinhold Carle
As hydrolysis of carotenoid esters is believed to be highly efficient in vivo, their insufficient hydrolysis in in vitro-digestion models, particularly, regarding zeaxanthin diesters, is a current issue. Therefore, in this study, several factors related to the enzymatic hydrolysis were investigated in an adapted version of the standardized INFOGEST in vitro-digestion model, using zeaxanthin dipalmitate (ZDP) as a substrate. The results showed that pancreatic lipase was able to hydrolyze ZDP, whereas carboxyl ester lipase (CEL) substantially contributed to ZDP cleavage...
August 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29605130/ultrasound-assisted-enzymatic-hydrolysis-for-isolating-titanium-dioxide-nanoparticles-from-bivalve-mollusk-before-sp-icp-ms
#2
María Vanesa Taboada-López, Sara Iglesias-López, Paloma Herbello-Hermelo, Pilar Bermejo-Barrera, Antonio Moreda-Piñeiro
Applicability of single-particle inductively coupled plasma mass spectrometry (sp-ICP-MS) using dwell times equal to or shorter than 100 μs has been tested for assessing titanium dioxide nanoparticles (TiO2 NPs) in bivalve mollusks. TiO2 NPs isolation from fresh mollusk tissues was achieved by ultrasound assisted enzymatic hydrolysis procedure using a pancreatin/lipase mixture. Optimum extraction conditions imply ultrasonication (60% amplitude) for 10 min, and 7.5 mL of a solution containing 3.0 g L-1 of pancreatin and lipase (pH 7...
August 14, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29577301/effect-of-different-heat-treatments-on-in-vitro-digestion-of-egg-white-proteins-and-identification-of-bioactive-peptides-in-digested-products
#3
Xuefen Wang, Ning Qiu, Yaping Liu
Chicken eggs are ingested by people after a series of processes, but to date, only a few studies have explored the nutrient variations caused by different heat treatments. In this work, the impacts of different heat treatments (4, 56, 65, and 100 °C on the in vitro digestibility of egg white proteins were investigated by hydrolysis with pepsin or pepsin + pancreatin to simulate human gastrointestinal digestion, and the digested products were identified using Nano-LC-ESI-MS/MS. Egg white proteins treated at 65 °C had the highest in vitro pepsin digestibility value whereas the pepsin + pancreatin digestibility increased significantly (P < 0...
March 25, 2018: Journal of Food Science
https://www.readbyqxmd.com/read/29574296/novel-prodrug-prx-p4-003-selectively-activated-by-gut-enzymes-may-reduce-the-risk-of-iatrogenic-addiction-and-abuse
#4
Sandeep T Patil, Ron H Bihovsky, Steven A Smith, William Z Potter, Valentino J Stella
OBJECTIVES: Prescription stimulants are vulnerable to oral and parenteral abuse. Intravenous forms of abuse may be most detrimental due to an enhanced risk of dependence, overdose, and infectious diseases. Our objective was to discover an orally active prodrug of a stimulant that would not be easily converted to its parent when injected, thus hindering intravenous abuse. METHODS: Following an initial analysis of stimulant structures, the fencamfamine isomer [(-)-FCF; (N-ethyl-3-phenylbicyclo[2...
March 2, 2018: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29564327/compositional-quality-and-potential-gastrointestinal-behavior-of-probiotic-products-commercialized-in-italy
#5
Alessandra Vecchione, Francesco Celandroni, Diletta Mazzantini, Sonia Senesi, Antonella Lupetti, Emilia Ghelardi
Recent guidelines indicate that oral probiotics, living microorganisms able to confer a health benefit on the host, should be safe for human consumption, when administered in a sufficient amount, and resist acid and bile to exert their beneficial effects (e.g., metabolic, immunomodulatory, anti-inflammatory, competitive). This study evaluated quantitative and qualitative aspects and the viability in simulated gastric and intestinal juices of commercial probiotic formulations available in Italy. Plate counting and MALDI-TOF mass spectrometry were used to enumerate and identify the contained organisms...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29563546/preclinical-development-of-a-novel-orally-administered-anti-tumour-necrosis-factor-domain-antibody-for-the-treatment-of-inflammatory-bowel-disease
#6
J Scott Crowe, Kevin J Roberts, Timothy M Carlton, Luana Maggiore, Marion F Cubitt, Simon Clare, Katherine Harcourt, Jill Reckless, Thomas T MacDonald, Keith P Ray, Anna Vossenkämper, Michael R West
TNFα is an important cytokine in inflammatory bowel disease. V565 is a novel anti-TNFα domain antibody developed for oral administration in IBD patients, derived from a llama domain antibody and engineered to enhance intestinal protease resistance. V565 activity was evaluated in TNFα-TNFα receptor-binding ELISAs as well as TNFα responsive cellular assays and demonstrated neutralisation of both soluble and membrane TNFα with potencies similar to those of adalimumab. Although sensitive to pepsin, V565 retained activity after lengthy incubations with trypsin, chymotrypsin, and pancreatin, as well as mouse small intestinal and human ileal and faecal supernatants...
March 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29537703/in-vitro-adhesion-and-anti-inflammatory-properties-of-native-lactobacillus-fermentum-and-lactobacillus-delbrueckii-spp
#7
Archer Ann Catherine, Nawneet K Kurrey, Prakash M Halami
AIM: This study aimed at characterizing the adhesion and immune-stimulatory properties of native probiotic Lactobacillus fermentum (MCC2759 and MCC2760) and Lactobacillus delbrueckii MCC2775. METHODS AND RESULTS: Adhesion of the strains were assessed in Caco-2 and HT-29 cell lines. Expression of adhesion and immune markers were evaluated in Caco-2 cells by real-time qPCR. The cultures displayed >80% of adhesion to both cell lines and also induced the expression of mucin binding protein (mub) gene in presence of mucin, bile and pancreatin...
March 14, 2018: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/29494663/separation-and-identification-of-bioactive-peptides-from-stem-of-tinospora-cordifolia-willd-miers
#8
Raman Pachaiappan, Ekant Tamboli, Aurovind Acharya, Chia-Hung Su, Subash C B Gopinath, Yeng Chen, Palaniyandi Velusamy
Enzyme hydrolysates (trypsin, papain, pepsin, α-chymotrypsin, and pepsin-pancreatin) of Tinospora cordifolia stem proteins were analyzed for antioxidant efficacy by measuring (1) 1,1-diphenyl-2-picrylhydrazyl (DPPH•) radical scavenging activity, (2) 2,20-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS+) radical scavenging capacity, and (3) Fe2+ chelation. Trypsin hydrolysate showed the strongest DPPH• scavenging, while α-chymotrypsin hydrolysate exhibited the highest ABTS+ scavenging and Fe2+ chelation...
2018: PloS One
https://www.readbyqxmd.com/read/29453560/establishment-of-primary-culture-of-sertoli-cells
#9
Raquel L Bernardino, Marco G Alves, Pedro F Oliveira
The successful isolation and culture of Sertoli cells depend on a series of delicate processes of mechanical isolation and enzymatic digestion of the testicular tissue, taking advantage of an array of enzymes (such as DNAse, collagenase, and pancreatin) in order to digest the extracellular matrix components. The complexity of these processes may present some differences depending on the origin of the testicular sample (whole tissue or biopsy) and of the species in question. Rat and mouse Sertoli cells are obtained by a similar protocol, whereas bovine and human Sertoli cells require a more extensive mechanical and enzymatic processing...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29438718/safety-potential-biotechnological-and-probiotic-properties-of-bacteriocinogenic-enterococcus-lactis-strains-isolated-from-raw-shrimps
#10
Olfa Ben Braïek, Stefano Morandi, Paola Cremonesi, Slim Smaoui, Khaled Hani, Taoufik Ghrairi
The aims of this study are to isolate new bacteriocinogenic lactic acid bacterial strains from white (Penaeus vannamei) and pink (Palaemon serratus) raw shrimps and evaluate their technological and probiotic potentialities. Seven strains were selected, among fifty active isolates, as producing interesting antimicrobial activity. Identified as Enterococcus lactis, these isolates were able to produce enterocins A, B and/or P. The safety aspect, assessed by microbiological and molecular tests, demonstrated that the strains were susceptible to relevant antibiotics such as vancomycin, negative for haemolysin and gelatinase activities, and did not harbour virulence and antibiotic resistance genes...
February 10, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29313579/pancreatic-exocrine-insufficiency-in-type-1-and-2-diabetes-therapeutic-implications
#11
Rupjyoti Talukdar, D Nageshwar Reddy
The objective of the present review is to focus on pancreatic exocrine insufficiency that is associated with Type 1 and 2 diabetes, its clinical and therapeutic implications, including the utility and efficacy of pancreatin supplementation. A literature search was conducted on Pubmed / Medline to identify relevant articles using terms pancreatic exocrine insufficiency in diabetes mellitus patients, pathophysiology, prevalence, treatment and management published between 2006-2016 in English language. Meta-analysis has revealed the prevalence of PEI in patients with type-1 and type-2 diabetes mellitus to be 37...
September 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29234315/food-associated-lactobacillus-plantarum-and-yeasts-inhibit-the-genotoxic-effect-of-4-nitroquinoline-1-oxide
#12
Roberta Prete, Rosanna Tofalo, Ermanno Federici, Aurora Ciarrocchi, Giovanni Cenci, Aldo Corsetti
Lactic acid bacteria and yeasts, representing the prevailing microbiota associated with different foods generally consumed without any cooking, were identified and characterized in vitro for some functional properties, such as acid-bile tolerance and antigenotoxic activity. In particular, 22 Lactobacillus plantarum strains and 14 yeasts were studied. The gastro-intestinal tract tolerance of all the strains was determined by exposing washed cell suspensions at 37°C to a simulated gastric juice (pH 2.0), containing pepsin (0...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29225213/fish-protein-hydrolysate-exhibits-anti-obesity-activity-and-reduces-hypothalamic-neuropeptide-y-and-agouti-related-protein-mrna-expressions-in-rats
#13
Takafumi Mizushige, Masaki Komiya, Moe Onda, Kenji Uchida, Kohsuke Hayamizu, Yukihito Kabuyama
Fish protein is a source of animal protein that is consumed worldwide. Although it has been reported that the intake of Alaska pollack protein (APP) reduces body fat accumulation and increases muscle weight in rats, the mechanisms underlying these effects are poorly understood. As a possibility, peptides released from APP in the gastrointestinal tract are important to the functions of APP. In the present study, we examined the effects of APP hydrolysate digested artificially with pepsin and pancreatin on white adipose tissue and skeletal muscle...
2017: Biomedical Research
https://www.readbyqxmd.com/read/29218505/antibacterial-and-antibiofilm-activity-of-lactic-acid-bacteria-isolated-from-traditional-artisanal-milk-cheese-from-northeast-china-against-enteropathogenic-bacteria
#14
Xingyang Cui, Yunjia Shi, Shanshan Gu, Xin Yan, Hongyan Chen, Junwei Ge
The present study aims to investigate the probiotic properties of novel strains of lactic acid bacteria isolated from traditional artisanal milk cheese from Northeast China and to explore their antibacterial activity against enteropathogenic bacteria. Of the 321 isolates, 86 exhibited survival in low pH, resistance to pancreatin, and tolerance to bile salts; of these, 12 inhibited the growth of more than seven enteropathogenic bacteria and exhibited antibiofilm activities against Staphylococcus aureus CMCC26003 and/or Escherichia coli CVCC230...
December 7, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/29183414/effects-of-soluble-fiber-inclusion-in-gestation-diets-with-varying-fermentation-characteristics-on-lactational-feed-intake-of-sows-over-two-successive-parities
#15
C Q Tan, H Q Sun, H K Wei, J J Tan, G Long, S W Jiang, J Peng
The effects of soluble fiber inclusion in gestation diets with varying fermentation characteristics (fermentation kinetics and short-chain fatty acids (SCFA)-profile) on lactational feed intake of sows and their piglet growth over two parities were investigated using an in vitro-in vivo methodology. After breeding, 90 multiparous Landrace sows were randomized to one of three experimental diets: the control (CON) diet, konjac flour (KF) diet or sugar beet pulp (SBP) diet. All diets had similar levels of net energy, CP, insoluble fiber and NDF, but KF and SBP diets had higher soluble fiber levels than the CON diet...
November 29, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29122582/biorelevant-media-slows-the-solution-mediated-phase-transformation-of-amorphous-spironolactone
#16
Mary S Kleppe, Roy J Haskell, Robin H Bogner
Solution-mediated phase transformation (SMPT) can reduce the high drug concentration expected from amorphous formulations, eliminating the improvement in drug absorption one hoped to gain from this high energy drug state. The differences in SMPT of a supersaturating system were compared in biorelevant media (fasted state simulated intestinal fluid and fed state simulated intestinal fluid) and United States Pharmacopeia compendial medium, simulated intestinal fluid without pancreatin. Amorphous spironolactone underwent SMPT to the same hydrate of spironolactone in all 3 media which was confirmed by the decrease in dissolution rates assessed in a flow-through dissolution apparatus, as well as by the appearance of crystals on the amorphous solid surface detected by polarized light microscopy...
January 2018: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29096438/exploration-of-potentially-bioactive-peptides-generated-from-the-enzymatic-hydrolysis-of-hempseed-proteins
#17
Gilda Aiello, Carmen Lammi, Giovanna Boschin, Chiara Zanoni, Anna Arnoldi
The seed of industrial hemp is an underexploited protein source. In view of a possible use in functional foods, a hempseed protein concentrate was hydrolyzed with pepsin, trypsin, pancreatin, or a mixture of these enzymes. A detailed peptidomic analysis using data-dependent acquisition showed that the numbers of peptides identified ranged from 90 belonging to 33 parent proteins in the peptic hydrolysate to 9 belonging to 6 proteins in the pancreatin digest. The peptic and tryptic hydrolysates resulted to be the most efficient inhibitors of 3-hydroxymethyl-coenzyme A reductase activity when tested on the catalytic domain of the enzyme...
November 29, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29090713/pepsin-pancreatin-hydrolysis-reduced-the-ability-of-lunasin-enriched-material-to-inhibit-activation-of-the-inflammasomes-in-thp-1-human-macrophages
#18
Samuel James Price, Philipus Pangloli, Vermont P Dia
Inflammation caused by the NLRP3 inflammasome has been linked to many diseases. Lunasin is a bioactive peptide from soybeans with reported anti-inflammatory properties. The objective of this work was to determine the effect of pepsin-pancreatin hydrolysis (PPH) on the ability of lunasin-enriched preparation (LEP) to inhibit inflammasome activation in differentiated THP-1 human macrophages. THP-1 macrophages were treated with different concentrations of LEP (0.0625 to 0.25 mg mL-1 ), primed with 1 μg mL-1 lipopolysaccharide for 6 h and activated by 5 mM adenosine triphosphate for 1 h...
December 13, 2017: Food & Function
https://www.readbyqxmd.com/read/29080817/production-and-structural-characterization-of-exopolysaccharides-from-newly-isolated-probiotic-lactic-acid-bacteria
#19
Yousra Abid, Angela Casillo, Houda Gharsallah, Ichrak Joulak, Rosa Lanzetta, Maria Michela Corsaro, Hamadi Attia, Samia Azabou
In this work, four exopolysaccharide-producing lactic acid bacteria (LAB) strains, newly isolated from Tunisian spontaneously fermented foods and beverages, namely bovine and turkey meat sausages (BMS and TMS), date palm sap (DPS) and cow milk (CM), were identified as Leuconostoc citreum-BMS, Leuconostoc mesenteroides-TMS, Pediococcus pentosaceus-DPS and Leuconostoc pseudomesenteroides-CM, respectively. The isolated strains showed the ability to withstand simulated human gastrointestinal (GI) tract conditions (low pH, lysozyme, bile salts, pepsin and pancreatin) and showed high surface hydrophobicity (79-90%), besides their ability to act against Escherichia coli and Listeria monocytogenes and to produce exopolysaccharides (EPS)...
October 25, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29068450/soy-peptide-aggregates-formed-during-hydrolysis-reduced-protein-extraction-without-decreasing-their-nutritional-value
#20
Yuanhong Zhang, Feibai Zhou, Mouming Zhao, Zhengxiang Ning, Dongxiao Sun-Waterhouse, Baoguo Sun
Upon enzymatic hydrolysis, soy protein isolates showed a strong tendency to aggregate, presenting a significant loss of valuable proteins. This study mainly focused on the large insoluble aggregates formed during proteolysis, and the influence of heating was further explored for a better understanding of the mechanism involved. The results from SDS-PAGE and amino acid analysis clearly showed that the insoluble aggregates formed upon hydrolysis were aggregated peptides, mainly attributed to the hydrophobic interactions between peptides with hydrophobic amino acids (Val, Ala, Leu, Ile, Tyr, Phe, and Pro) and sulfur-containing (Met and Cys) residues...
December 13, 2017: Food & Function
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