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https://www.readbyqxmd.com/read/28222405/thyroid-hormones-a-potential-ally-to-ldl-cholesterol-lowering-agents
#1
REVIEW
Leonidas N Duntas, Gabriela Brenta
L-thyroxine (LT4) treatment of hypothyroidism, particularly in patients with thyroid- stimulating hormone (TSH) >10mU/L, results in improved lipid profile, as LT4 stimulates low-density lipoprotein cholesterol (LDL-C) degradation and the conversion of cholesterol in bile acids by inducing LDL-receptor and 7 alpha hydroxylase expression, respectively. Statins decrease total cholesterol (TC) and LDL-C mainly by suppressing 3-hydroxy-3-methylglutaryl coenzyme A activity. Therefore, the addition of statins to LT4 treatment, following the reversal of hypothyroidism, acts synergistically and forms a powerful treatment modality in patients with this condition whose serum lipids have not achieved the target...
October 2016: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28220387/cadmium-concentration-in-human-autopsy-tissues
#2
Teresa Lech, Józefa K Sadlik
The concentration of cadmium in human tissues obtained on the basis of autopsies of non-poisoned Polish people (n = 150), aged from 1 to 80 years, examined between 1990 and 2010, is presented. The following values were found in wet digested samples by flame atomic absorption spectrometry (FAAS) (mean ± SD, median, and range, μg/g of wet weight): brain 0.020 ± 0.031, 0.084, 0-0.120 (n = 41); stomach 0.148 ± 0.195, 0.084, 0-1.25 (n = 89); small intestine 0.227 ± 0.231, 0.130, 0-0.830 (n = 39); liver 1...
February 20, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28219703/immunomodulatory-properties-of-1-2-dihydro-4-hydroxy-2-oxo-1-8-naphthyridine-3-carboxamide-derivative-vl15
#3
Anna Maria Malfitano, Chiara Laezza, Simone Bertini, Daniela Marasco, Tiziano Tuccinardi, Maurizio Bifulco, Clementina Manera
1,2-dihydro-4-hydroxy-2-oxo-1,8-naphthyridine-3-carboxamide derivative VL15 has been recently developed as a selective cannabinoid CB2 receptor compound. Given the high selectivity of this compound at the cannabinoid CB2 receptor and the well-known protective function of this receptor in neurological disorders with autoimmune component like multiple sclerosis, we assessed the immunomodulatory properties of VL15. We assessed on activated peripheral blood mononuclear cells (PBMC), proliferation and viability, cell cycle progression and measured activation markers and the expression of phosphorylated proteins...
February 17, 2017: Biochimie
https://www.readbyqxmd.com/read/28218523/transepithelial-transport-of-ywdhnnpqir-and-its-metabolic-fate%C3%AF-with-cytoprotection-against-oxidative-stress%C3%AF-in-human-intestinal-caco-2-cells
#4
Feiran Xu, Lifeng Wang, Xingrong Ju, Jing Zhang, Shi Yin, Jiayi Shi, Rong He, Qiang Yuan
Studies on the antioxidant peptides extracted from foodstuff sources have included not only experiments to elucidate the chemical characteristics of them but have also investigated their bioavailability and intracellular mechanisms. This study was designed to clarify the absorption and antioxidative activity of YWDHNNPQIR (named RAP) which derived from rapeseed protein using Caco-2 cells transwell model. Results showed that 0.8% RAP (C0=0.2mM, t=90min) could maintain the original structure to across the Caco-2 cell monolayers via the intracellular transcytosis pathway, and the Papp (drug apparent absorption rate) was (6...
February 20, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28217808/-lipid-lowering-effect-of-seven-traditional-chinese-medicine-monomers-in-zebrafish-system
#5
Kan Chen, Chang-Qian Wang, Yu-Qi Fan, Zhi-Hua Han, Yue Wang, Lin Gao, Hua-Su Zeng
The present study aimed to study lipid-lowering effect of seven traditional Chinese medicine monomers in zebrafish system. Zebrafish were fed with high fat diet to establish a hyperlipemia model, then fasted and bathed with seven traditional Chinese medicine monomers stigmasterol, triacontanol, chrysophanol, vanillic acid, shikimic acid, polydatin and oleanolic acid respectively. The oil red O staining was used to detect the blood lipids of zebrafish. Serum total cholesterol and triglyceride levels were detected to validate the lipid-lowering effect...
February 25, 2017: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/28217694/probiotics-for-prevention-of-urinary-stones
#6
John C Lieske
BACKGROUND: Urinary supersaturation is one key determinant of calcium oxalate (CaOx) urinary stone formation, and urinary excretions of oxalate and citrate are two key determinants. Each is influenced by gastrointestinal processes. METHODS: Open label and randomized placebo studies have examined the effect of oral probiotic preparations on urinary supersaturation and oxalate excretion. Cross sectional studies in humans have studied the association of Oxalobacter formigenes colonization status and urinary oxalate excretion and prevalence of urinary stones...
January 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28216581/biopharmaceutical-characterization-and-bioavailability-study-of-a-tetrazole-analog-of-clofibric-acid-in-rat
#7
Nancy Vara-Gama, Adriana Valladares-Méndez, Gabriel Navarrete-Vazquez, Samuel Estrada-Soto, Luis Manuel Orozco-Castellanos, Julio César Rivera-Leyva
In the current investigation, the physicochemical, biopharmaceutical and pharmacokinetic characterization of a new clofibric acid analog (Compound 1) was evaluated. Compound 1 showed affinity by lipophilic phase in 1 to 5 pH interval, indicating that this compound would be absorbed favorably in duodenum or jejunum. Also, Compound 1 possess two ionic species, first above of pH 4.43 and, the second one is present over pH 6.08. The apparent permeability in everted sac rat intestine model was 8.73 × 10(-6) cm/s in duodenum and 1...
February 14, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28216465/increased-intestinal-permeation-and-modulation-of-presystemic-metabolism-of-resveratrol-formulated-into-self-emulsifying-drug-delivery-systems
#8
G Mamadou, C Charrueau, J Dairou, N Limas Nzouzi, B Eto, G Ponchel
Despite various beneficial biological properties, resveratrol lacks therapeutic applications because of poor bioavailability due to variable absorption and extensive metabolism. The present study aims at evaluating the capability of self-emulsifying drug delivery systems (SEDDS) to enhance resveratrol permeation across rat intestine and to modulate its presystemic metabolism. For that purpose, semi-solid (SS) and liquid (L) SEDDS were prepared and dispersed in an aqueous buffer to produce nanoemulsions (NE)...
February 16, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28216010/uptake-of-benzo-a-pyrene-but-not-of-phenanthrene-is-inhibited-by-fatty-acids-in-intestinal-brush-border-membrane-vesicles-of-rainbow-trout-oncorhynchus-mykiss
#9
Stefan de Gelder, Liselot van Och, Jan Zethof, Thamar N M Pelgrim, Josef D Rasinger, Gert Flik, Marc H G Berntssen, Peter H M Klaren
Partial replacement of fish ingredients with vegetable ingredients has elevated levels of polycyclic aromatic hydrocarbons (PAHs) in Atlantic salmon reared on these feeds. PAH uptake in the intestinal tract is postulated to occur in association with lipid absorption and could well be affected by fatty acid composition. We therefore investigated the effects of a fish oil and vegetable oil fatty acid, eicosapentaenoic acid (EPA; 20:5n-3) and oleic acid (18:1n-9) respectively, on the uptake of benzo[a]pyrene (BaP) and phenanthrene (PHE) across the intestinal brush border membrane in the salmonid species rainbow trout (Oncorhynchus mykiss)...
February 12, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28215165/synthesis-characterization-and-comparison-of-local-analgesic-anti-inflammatory-ulcerogenic-activity-of-copper-and-zinc-complexes-of-indomethacin
#10
Abhijit Sukul, Saikat Kumar Poddar, Sanjana Haque, Sajal Kumar Saha, Sreedam Chandra Das, Zobaer Al Mahmud, S M AbdurRahman, Abhijit Sukul
BACKGROUND: Non-steroidal anti-inflammatory drugs (NSAID) exert gastrointestinal upset by inhibiting mucosal cyclooxygenase (COX) activity for which complexation technique with metals has been adopted to overcome this drawback. OBJECTIVE: The study aimed to overcome the gastrointestinal side effects associated with indomethacin treatment by synthesizing copper (Cu) and zinc (Zn) complexes of indomethacin along with assessing potential pharmacological effects of these complexes...
February 16, 2017: Anti-inflammatory & Anti-allergy Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28215130/exogenous-glucagon-like-peptide-1-attenuates-glucose-absorption-and-reduces-blood-glucose-concentration-after-small-intestinal-glucose-delivery-in-critical-illness
#11
Asaf Miller, Adam M Deane, Mark P Plummer, Caroline E Cousins, Lee-Anne S Chapple, Michael Horowitz, Marianne J Chapman
OBJECTIVE: To evaluate the effect of exogenous glucagonlike peptide-1 (GLP-1) on small intestinal glucose absorption and blood glucose concentrations during critical illness. DESIGN, SETTING AND PARTICIPANTS: A prospective, blinded, placebo-controlled, cross-over, randomised trial in a mixed medical-surgical adult intensive care unit, with 12 mechanically ventilated critically ill patients, who were suitable for receiving small intestinal nutrient. INTERVENTIONS: On consecutive days, in a randomised order, participants received intravenous GLP-1 (1...
March 2017: Critical Care and Resuscitation: Journal of the Australasian Academy of Critical Care Medicine
https://www.readbyqxmd.com/read/28214380/application-of-the-mechpeff-model-to-predict-passive-effective-intestinal-permeability-in-the-different-regions-of-the-rodent-small-intestine-and-colon
#12
D Pade, M Jamei, A Rostami-Hodjegan, D B Turner
A major component of Physiologically-Based Pharmacokinetic (PBPK) models is prediction of the rate and extent of absorption of orally dosed drugs for which knowledge of effective passive intestinal permeability (Peff ) is essential. Single pass intestinal perfusion (SPIP) studies are used to establish effective permeability in vivo but are difficult to perform in rodents while mechanistic models to predict drug Peff in rat and mouse have not been published. This work evaluates the predictive performance of the 'MechPeff' model to predict Peff in the rodent intestine based upon knowledge of regional gut physiology and drug-specific physicochemical parameters...
February 18, 2017: Biopharmaceutics & Drug Disposition
https://www.readbyqxmd.com/read/28213844/self-nanoemulsified-drug-delivery-system-of-hydrochlorothiazide-for-increasing-dissolution-rate-and-diuretic-activity
#13
Cassiana Mendes, Aline Buttchevitz, Jéssica Henriques Kruger, Thiago Caon, Patricia de Oliveira Benedet, Elenara Lemos-Senna, Marcos Antônio Segatto Silva
Hydrochlorothiazide (HCTZ) is a class IV drug according to the Biopharmaceutical Classification System. This study aimed the development of self-nanoemulsifying drug delivery system (SNEDDS) for HCTZ as an approach to overcome the biopharmaceutical limitations. Pre-formulation screening and ternary phase diagrams were carried out to select the oil phase, the surfactant, and the co-surfactant as the amount of each constituent. The optimized formulations, with reduced amount of surfactant, and composed of medium chain triglycerides, Cremophor EL and Transcutol P did not affect the pH or show drug incompatibilities...
February 17, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28213108/intestinal-transport-and-absorption-of-bioactive-phenolic-compounds-from-a-chemically-characterized-aqueous-extract-of-athrixia-phylicoides
#14
Sandra L Bowles, Yonela Ntamo, Christiaan J Malherbe, Abidemi M P Kappo, Johan Louw, Christo J F Muller
ETHNOPHARMACOLOGICAL RELEVANCE: Athrixia phylicoides (A. phylicoides), popularly known as "bush tea", is an indigenous aromatic shrub found in mountainous and grassland areas of the northern and eastern parts of southern Africa. The plant is traditionally used for the treatment of several ailments, including coughing, treating infected wounds, treating boils and sore throat, hypertension and heart disease. Potential anti-diabetic effects have also been demonstrated in vitro. AIM OF THE STUDY: To investigate the intestinal transport of prominent phenolic constituents, across a fully differentiated Caco-2 monolayer, using a characterized aqueous extract of A...
February 14, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28212351/black-box%C3%A2-gastrointestinal%C3%A2-tract-needs%C3%A2-and%C3%A2-prospects%C3%A2-of%C3%A2-gaining%C3%A2-insights%C3%A2-of%C3%A2-fate%C3%A2-of%C3%A2-fat-%C3%A2-protein-%C3%A2-and%C3%A2-starch%C3%A2-in%C3%A2-case%C3%A2-of%C3%A2-exocrine%C3%A2-pancreatic%C3%A2-insufficiency%C3%A2-by%C3%A2-using%C3%A2-fistulated%C3%A2-pigs
#15
REVIEW
Anne Mößeler, Josef Kamphues
Exocrine pancreatic insufficiency (EPI) results in the maldigestion and malabsorption of nutrients. The digestive processes in humans and other monogastric species like rat and pig are characterized by a predominantly enzymatic digestion within the small intestine and microbial fermentation located in the hindgut. For protein, it is doctrine that only prececally absorbed amino acids can be transferred to the amino acid pool of the host, while postileal absorption of nitrogen-containing compounds occurs mainly in the form of ammonia, being a burden rather than a benefit for the organism...
February 16, 2017: Nutrients
https://www.readbyqxmd.com/read/28210795/observational-comparisons-of-intestinal-microbiota-characterizations-immune-enzyme-activities-and-muscle-amino-acid-compositions-of-loach-in-paddy-fields-and-ponds-in-sichuan-province
#16
Song Yang, Yuanliang Duan, Jie Zhang, Jian Zhou, Ya Liu, Jun Du, Liulan Zhao, Zongjun Du, Shuaishuai Han
A balanced intestinal microbial ecosystem is crucial for the growth and health of animals because it can influence the digestion and absorption of nutrients in the intestine. Different culture conditions may change the ecology of microbial in intestine and thus affect the overall growth performance of an animal. In this study, we compared intestinal morphologies, microbiota characterizations, immune enzyme activities, and muscle amino acid compositions of loach cultured in paddy fields and ponds. The fish were fed with the same diets from May 5 to November 5 (2015) in three paddy or ponds...
February 16, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28209316/intestinal-adaptations-after-bariatric-surgery-consequences-on-glucose-homeostasis
#17
REVIEW
Jean-Baptiste Cavin, André Bado, Maude Le Gall
The gastrointestinal (GI) tract can play a direct role in glucose homeostasis by modulating the digestion and absorption of carbohydrates and by producing the incretin hormones. In recent years, numerous studies have focused on intestinal adaptation following bariatric surgeries. Changes in the number of incretin (glucagon-like peptide 1 and glucose-dependent insulinotropic polypeptide) producing cells have been reported, which could result in the modified hormonal response seen after surgery. In addition, the rate of absorption and the intestinal regions exposed to sugars may affect the time course of appearance of glucose in the blood...
February 10, 2017: Trends in Endocrinology and Metabolism: TEM
https://www.readbyqxmd.com/read/28208612/enteric-pathogens-and-their-toxin-induced-disruption-of-the-intestinal-barrier-through-alteration-of-tight-junctions-in-chickens
#18
REVIEW
Wageha A Awad, Claudia Hess, Michael Hess
Maintaining a healthy gut environment is a prerequisite for sustainable animal production. The gut plays a key role in the digestion and absorption of nutrients and constitutes an initial organ exposed to external factors influencing bird's health. The intestinal epithelial barrier serves as the first line of defense between the host and the luminal environment. It consists of a continuous monolayer of intestinal epithelial cells connected by intercellular junctional complexes which shrink the space between adjacent cells...
February 10, 2017: Toxins
https://www.readbyqxmd.com/read/28208101/berberine-as-a-chemical-and-pharmacokinetic-marker-of-the-butanol-extracted-food-allergy-herbal-formula-2
#19
Nan Yang, Kamal Srivastava, Ying Song, Changda Liu, Sool Cho, Yujuan Chen, Xiu-Min Li
RATIONALE: Food Allergy Herbal Formula 2 (FAHF-2) provided protection against peanut anaphylaxis in a murine model and induced beneficial immune-modulation in humans. Butanol-refined FAHF-2, B-FAHF-2, retained safety and efficacy in the peanut allergic murine model at only 1/5 of FAHF-2 dosage. One compound, berberine, was isolated and identified in vitro as a bioactive component present in FAHF-2 and B-FAHF-2. The aim of this study was to investigate berberine as a chemical and pharmacokinetic marker of B-FAHF-2...
February 13, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28205143/development-of-a-gastric-absorptive-immediate-responsive-oral-protein-loaded-versatile-polymeric-delivery-system
#20
Pierre P D Kondiah, Yahya E Choonara, Lomas K Tomar, Charu Tyagi, Pradeep Kumar, Lisa C du Toit, Thashree Marimuthu, Girish Modi, Viness Pillay
A multifunctional platform to deliver three diverse proteins of insulin, interferon beta (INF-β) and erythropoietin (EPO), using a novel copolymeric microparticulate system of TMC-PEGDMA-MAA, was synthesised as an intelligent pH-responsive 2-fold gastric and intestinal absorptive system. Physiochemical and physicomechanical studies proved the degree of crystallinity that supported the controlled protein delivery of the microparticulate system. The copolymer was tableted before undertaking in vitro and in vivo analysis...
February 15, 2017: AAPS PharmSciTech
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