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... This work investigated the blood pressure (BP)-lowering effect of the flavanol (−)-epicatechin in a model of metabolic syndrome. Rats were fed a regular chow diet without (Control) or with 10% (w/v) fructose in the drinking water (high fructose, HF) for 8 weeks. A subgroup of the HF-fed rats was supplemented with (−)-epicatechin 20 mg/kg body weight (HF-EC). Dietary (−)-epicatechin reverted the in ...
... Lethal and sublethal responses related to different phases of metabolism (phases I and II enzymatic activities), neurotoxicity (acetylcholinesterase activity), oxidative stress (lipid peroxidation and antioxidant enzyme activities), and genetic damage (DNA strand breaks) were analysed to assess the possible adverse effects of pharmaceuticals bound to marine sediments. The crustacean amphipod Ampel ...
... Polycyclic aromatic hydrocarbons (PAHs) are a family of toxicants that are ubiquitous in the environment. These contaminants generate considerable interest, because some of them are highly carcinogenic in laboratory animals and have been implicated in breast, lung, and colon cancers in humans. Dietary intake of PAHs constitutes a major source of exposure in humans. Factors affecting the accumulati ...
... A new fluorescent-based high-performance liquid chromatography (HPLC) assay using 4-chloro-7-nitrobenzo-2-oxa-1,3-diazole (NBD-C1) was employed to determine iron (Fe) bioavailability to red tide phytoplankton in seawater. After growing four red tide species (Prymnesium parvum, Heterosigma akashiwo, Eutreptiella gymnastica, and Oltmannsiellopsis viridis) in f/2 artificial seawater under different F ...
... Brassica vegetables are consumed mostly after processing, which is expected to give beneficial effects on the vegetable properties, such as improved palatability and bioavailability of nutrients, or shelf life extension. But processing also results to various changes in the content of health promoting phytochemicals like glucosinolates. This paper reviews the effects of processing on the glucosino ...
Angiospermae; Gymnospermae; aerial parts; bark; bioavailability; data collection; ferns and fern allies; flowers; fruits; iron; iron deficiency anemia; leaves; roots; seeds; shoots; statistics; stems; surveys; wood
Abstract:
... Iron is an essential mineral nutrient for all living organisms, involved in a plurality of biological processes. Its deficit is the cause of the most common form of anemia in the world: iron deficiency anemia (IDA). This paper reviews iron content in various parts of 1228 plant species and its absorption from herbal products, based on data collected from the literature in a semi-systematic manner. ...
... Parboiled germinated brown rice (PGBR) has been suggested as a functional food because it is relatively rich in a number of nutrients and health promoting compounds. Here we compared the bioaccessibility of several of the bioactive compounds in cooked PGBR and brown rice (BR) by simulating oral, gastric and small intestinal digestion. The uptake and retention of bioactive compounds from a bioacces ...
... Metals bioaccumulated in aquatic organisms are considered to be a good indicator of bioavailable metal contamination levels in freshwaters. However, bioaccumulation depends on the metal, the species, and the water chemistry that influences metal bioavailability. In the laboratory, a kinetic model was used to describe waterborne Pb bioaccumulated in Gammarus pulex. Uptake and elimination rate const ...
... Nanostructure-mediated drug delivery is known to have a potential to improve drug bioavailability, apart from fostering release deviation of drug molecules and enabling precision drug targeting. Solid lipid nanoparticles (SLNs) have drawn great deal of the attention of scientists in finding a solution to minimize pharmaceutic limitations of the drugs used. Silymarin (Sm) has so far been used for t ...
... Carotenoids and their derivatives are versatile isoprenoids involved in many varied actions, hence their importance in the agri-food industry, nutrition, health and other fields. All carotenoids are derived from the colorless carotenes phytoene and phytofluene, which are oddities among carotenoids due to their distinct chemical structure. They occur together with lycopene in tomato and other lycop ...
... Addition of activated carbon (AC) or biochar (BC) to sediment to reduce the chemical and biological availability of organic contaminants is a promising in-situ remediation technology. But concerns about leaving the adsorbed pollutants in place motivate research into sorbent recovery methods. This study explores the use of magnetic sorbents. A coal-based magnetic activated carbon (MAC) was identifi ...
... Plastics can be found in food packaging, shopping bags, and household items, such as toothbrushes and pens, and facial cleansers. Due to the high disposability and low recovery of discharged materials, plastics materials have become debris accumulating in the environment. Microplastics have a dimension <5 mm and possess physico-chemical properties (e.g., size, density, color and chemical compositi ...
... Leishmaniasis is still a serious public health problem worldwide, especially in tropical areas where this infectious disease is endemic. The most severe form of the disease (i.e. visceral) can claim victims if left untreated and the few accessible drugs have several drawbacks including major side effects and parenteral administration. In this context, the investigation of new delivery modalities w ...
... The use of live bacterial reporters as sensing entities in whole-cell biosensors allows the investigation of the biological effects of a tested sample, as well as the bioavailability of its components. Here we present a proof of concept for a new design for online continuous water monitoring flow-cell biosensor, incorporating recombinant reporter bacteria, engineered to generate an optical signal ...
... Biomonitoring of blood is commonly used to identify and quantify occupational or environmental exposure to chemical contaminants. Increasingly, this technique has been applied to wildlife contaminant monitoring, including for green turtles, allowing for the non-lethal evaluation of chemical exposure in their nearshore environment. The sources, composition, bioavailability and toxicity of metals in ...
... Organic matter characterization is the starting point to describe organic waste treatments mechanisms and to propose their modeling. Two relevant characterization methodologies were frequently used in the literature based on chemical extractions and fluorescence spectroscopy. However, they could not be generalized to all the type of wastes because of the different molecules targeted. Consequently, ...
... PURPOSE: The speciation of soil organic pollutants is of great importance for risk assessment and contaminant remediation, however, only few studies have attempted to develop a speciation scheme for a facilitated risk assessment. This paper postulates a pragmatic speciation scheme for the fractionation of soil polycyclic aromatic hydrocarbons (PAHs) that could correlate with their bioavailabilitie ...
Hanne M. Kinnunen; Vikas Sharma; Luis Rodrigo Contreras-Rojas; Yafei Yu; Chlöe Alleman; Alavattam Sreedhara; Stefan Fischer; Leslie Khawli; Stefan T. Yohe; Daniela Bumbaca; Thomas W. Patapoff; Ann L. Daugherty; Randall J. Mrsny
... Subcutaneous (SC) injection is becoming a more common route for the administration of biopharmaceuticals. Currently, there is no reliable in vitro method that can be used to anticipate the in vivo performance of a biopharmaceutical formulation intended for SC injection. Nor is there an animal model that can predict in vivo outcomes such as bioavailability in humans. We address this unmet need by t ...
... Asthma, like many inflammation related disorders, has a complex etiology. Drugs targeting multiple pathways may prove more efficacious in these complex disorders. Cyclic 3′,5′-adenosine monophosphate (cAMP) phosphodiesterase IV (PDE IV) is one of the validated targets in bronchial asthma and despite availability of some therapeutic molecules targeting PDE IV, molecules with better properties are d ...
... The elevated occurrence of hydrophobic organic chemicals (HOCs) such as polycyclic aromatic hydrocarbons (PAH), polychlorinated biphenyls (PCBs) and legacy organchlorine pesticides (e.g. chlordane and DDT) in estuarine sediments continues to poses challenges for maintaining the health of aquatic ecosystems. Current efforts to develop and apply protective, science-based sediment quality regulations ...
... A method is presented for measuring the lateral diffusion coefficients of exogenously applied compounds on excised skin. The method involves sequential high resolution imaging of the spatial distribution of β-radiation associated with [¹⁴C]-labeled compounds to monitor the development of the concentration profile on the skin surface. It is exemplified by measurements made on three radiolabeled tes ...
bioavailability; blood; cholesterol; cholesterol metabolism; dietary supplements; drugs; heart diseases; high density lipoprotein; intestinal absorption; intestines; linseed oil; low density lipoprotein; micelles; omega-3 fatty acids; patients; placebos; therapeutics; triacylglycerols
Abstract:
... Elevated levels of circulating omega-3 polyunsaturated fatty acids like alpha linolenic acid (ALA) may be beneficial for cardiovascular health. Circulating ALA concentrations are elevated dramatically by a cholesterol supplemented diet which increases ALA bioavailability through enhanced micelle formation in the intestines. Conversely, it is possible that drugs which inhibit cholesterol metabolism ...
... Current environmental regulations relating to risk assessment for contaminated sites are often set assuming that the contaminant is 100% bioavailable. It is therefore not surprising that remediation of contaminated sites is very expensive and maybe it is unrealistic to achieve a “remediated state” under current regulatory guidelines using existing technologies. In fact the reality is that only a p ...
... We briefly reviewed the existing research on the ecotoxicity of nanowires and suggested directions for further study. Nanowires are technological innovations that can benefit humans. However, it is important to consider the effects of nanowires on the environment. Only a few studies have reported acute and chronic ecological toxicity of nanowires on aquatic and terrestrial organisms, and limited r ...
... Animal production depends on nutrient utilization and if done there is an accelerated momentum towards growth with a low cost to feed ratio Public concern over the consumption of pork with antibiotic residues of the animals fed with antibiotic growth promoters (AGP) has paved the way to use other additives like herbs and their products, probiotics, prebiotics etc. Numerous feed additives are in vo ...
... Phenolic phytochemicals have been of particular interests in food and pharmaceutical fields because they have potential to reduce the incidences of coronary heart disease, diabetes, cancers, and other chronic diseases. However, extremely low absorption rate of phenolic phytochemicals restricts their bioactivity in vivo. Such low absorption and bioavailability are due to their low water solubility, ...
... A new bioavailability/bioaccessibility risk assessment index (BRAI) was used to assess heavy metals’ (Cu, Cr, Zn, Pb, Ni, Cd) bioavailability/bioaccessibility of the aquatic sediments of Anzali International Wetland. This wetland, registered under the Ramsar Convention, is located along the southwestern part of the Caspian Sea coast. Heavy metal concentrations in the surface sediments of Anzali we ...
antineoplastic agents; bioavailability; cancer therapy; diosgenin; drug delivery systems; nanoparticles; neoplasms; polyethylene glycol; solubility
Abstract:
... Diosgenin (DGN) is a steroidal saponin from a therapeutic herb. It is reported to be a kind of potential natural antitumor drug. However, clinical application of diosgenin in cancer therapy is limited due to undesirable pharmaceutical characteristics such as its consequently poor solubility and low bioavailability. Here we developed a nanoparticle platform based on poly(ethylene glycol)–diosgenin ...
bioavailability; biosensors; cadmium; chemical reactions; cost effectiveness; drinking water; fluorescence; gold; heavy metals; lead; mercury; metal ions; pollutants; toxicity
Abstract:
... Bacterial biosensors are simple, cost-effective and efficient analytical tools for detecting bioavailable heavy metals in the environment. This work presents the design, construction and calibration of a novel whole-cell fluorescent biosensory device that, simultaneously and with high sensitivity, reports the presence of toxic mercury, lead, cadmium and/or gold ions in aqueous samples. This bio-re ...
... This review aims at emphasizing the role played by physical characteristics and physico-chemical properties of the food matrix on the digestive and metabolic fate, and health effects of grain products. It is today obvious that the food matrix conditions the health effects of food products and that we are able to modify this matrix to control the digestive fate of foods, and the metabolic fate of n ...
Geographical Locations; absorption; algae culture; aquaculture feeds; aquaculture industry; bioavailability; biomass production; bioreactors; biosynthesis; carbon dioxide; closed loop systems; cost effectiveness; dewatering; docosahexaenoic acid; economic sustainability; eicosapentaenoic acid; energy; fish oils; food webs; genetic engineering; interdisciplinary research; markets; microalgae; mutagenesis; nutrient uptake; nutrients; photosynthesis; production costs; production technology; raw materials; research and development; selection methods; supply chain
Abstract:
... The aquaculture industry needs a stable supply of feed resource materials in sufficient quantities and quality for future growth, in particular the fatty acids eicosapentaenoic acid (dha) and docosahexanoic acid (DHA) which so far have been ensured by inclusion of fish oil. About 70% of the available fish oil is being used in aquafeeds, but the global supply of fish oil is limited and emerging ome ...
... Aceclofenac is one of the most popular analgesic and anti-inflammatory drugs used for the relief of pain, rheumatoid arthritis, and osteoarthritis. To date, no intravenous preparation of aceclofenac has been developed because of its poor water solubility. In this study, to investigate its absolute bioavailability and metabolism in rats, aceclofenac was dissolved in a sterile aqueous solution conta ...
Chrysanthemum morifolium; absorption; bioavailability; body weight; flowers; glycosides; high performance liquid chromatography; human cell lines; humans; luteolin; mass spectrometry; metabolism; oral administration; rats
Abstract:
... To elucidate the bioavailability of luteolin and its glycosides in Chrysanthemum morifolium flowers, the absorption and metabolism of luteolin from them was investigated in rats and Caco-2 cells using HPLC and LC-MS. After oral administration of C. morifolium extract (1.7 g/kg body weight (bw), equivalent to 22.8 and 58.3 μmol/kg bw of luteolin and luteolin-7-O-glucoside, respectively) to rats, lu ...
... Superporous gastro-retentive cefditoren pivoxil tablets were prepared to improve the absorption and bioavailability of this drug and evaluated by varying the concentrations of carbopol and sodium carboxymethyl cellulose. The pre-compression and post-compression parameters were within acceptable pharmacopoeial limits. The swelling index indicates that formulations prepared with sodium carbonate hav ...
Recommended Dietary Allowances; absorption; bioavailability; bone strength; calcium; citrates; docosahexaenoic acid; dried skim milk; eicosapentaenoic acid; in vivo studies; inulin; menopause; models; ovariectomy; rats; vitamins
Abstract:
... The aim of this study was to evaluate the effects of fortification and nano-size reduction on calcium absorption and bioavailability of milk powder formula in sham, ovariectomized, and ovariectomized-osteoporosis rats as a menopause and menopause-osteoporosis model. Skim milk powder and skim milk powder fortified with calcium citrate and the suitable doses of inulin, eicosapentaenoic acid (EPA) an ...
Lauren L. Atwell; Anna Hsu; Carmen P. Wong; Jan F. Stevens; Deborah Bella; Tian‐Wei Yu; Clifford B. Pereira; Christiane V. Löhr; John Mark Christensen; Roderick H. Dashwood; David E. Williams; Jackilen Shannon; Emily Ho
... SCOPE: Sulforaphane (SFN), an isothiocyanate derived from crucifers, has numerous health benefits. SFN bioavailability from dietary sources is a critical determinant of its efficacy in humans. A key factor in SFN absorption is the release of SFN from its glucosinolate precursor, glucoraphanin, by myrosinase. Dietary supplements are used in clinical trials to deliver consistent SFN doses, but myros ...
absorption; beta-lactoglobulin; bioavailability; curcumin; digestion; gastrointestinal system; human cell lines; models; nanoemulsions; pH; pepsin; permeability; polyacrylamide gel electrophoresis; trypsin; water solubility
Abstract:
... Curcumin (CCM) is a bioactive polyphenolic compound that suffers a low bioavailability because of its low water solubility. In this work β-lactoglobulin (β-Lg) and nanoemulsion were used as carriers to deliver curcumin. The pH stability of β-Lg–CCM was investigated. The digestion of β-Lg–CCM and the nanoemulsion was studied using an in vitro gastrointestinal model. The effect of different carriers ...
Lucas Vinicius Costa Gomes; Welber Daniel Zanetti Lopes; Breno Cayeiro Cruz; Weslen Fabricio Teixeira; Gustavo Felippelli; Willian G. Maciel; Murilo Abud Bichuette; Maycon A. Ruivo; Marcos Henrique Alcantara Colli; Rafael Silveira Carvalho; Antonio Campanha Martinez; Vando Edésio Soares; Alvimar José da Costa
... The present study aimed to evaluate the acaricidal efficacy of fluazuron (2.5 mg/kg), administered as a pour-on, in comparison to an injectable formulation containing fluazuron (1.6 mg/kg) + ivermectin (0.63 mg/kg), against Rhipicephalus (Boophilus) microplus in naturally and experimentally infested cattle. Two studies were conducted with different tick strains, one with artificial infestations (S ...
bioactive properties; bioavailability; chemical reactions; chemical structure; hydrophobicity; quinolones
Abstract:
... 2-Pyrones, pyridones and quinolones represent classes of molecules with remarkable and diverse biological activity. The introduction of a trifluoromethyl group to a molecule can have dramatic and beneficial effects in terms of lipophilicity and bioavailability. Herein we report a route to afford a library of novel trifluoromethylated 2-pyrones, 2-pyridones and a 2-quinolone in moderate to good yie ...
... Frameworks commonly used in trace metal ecotoxicology (e.g., biotic ligand model (BLM) and tissue residue approach (TRA)) are based on the established link between uptake, accumulation and toxicity, but similar relationships remain unverified for metal-containing nanoparticles (NPs). The present study aimed to (i) characterize the bioaccumulation dynamics of PVP-, PEG-, and citrate-AgNPs, in compa ...
Rafael da Rosa Couto; Lucas Benedet; Jucinei José Comin; Paulo Belli Filho; Sérgio Roberto Martins; Luciano Colpo Gatiboni; Marilice Radetski; Cassio Marques de Valois; Vítor Gabriel Ambrosini; Gustavo Brunetto
... The application of fungicides to grapevines can cause the accumulation of Cu and Zn fractions in soil and increase their bioavailability and toxicity for plants. This study evaluated the accumulation and distribution of Cu and Zn fractions in the soil profile of a vineyard. In January 2012, stratified samples were collected from a 95-year-old vineyard and from a forest, which was used as a referen ...
... Metals constitute an important group of abiotic stressors that elicit stress responses in marine algae that include the production of reactive oxygen species (ROS). Silver (Ag) is a highly toxic metal to organisms but despite this there are relatively few studies on how it affects marine macroalgae (seaweeds). In a landmark study published in 1977 the first information was provided on the accumula ...
... The authors investigated sediment quality in Bizerte Lagoon (Tunisia) focusing on geochemical characteristics, metal sediment fractionation and elutriate toxicity assessment. Nickel, Cu, Zn, Pb, Cr and Cd partitioning in sediments was studied; accumulation and bioavailability were elucidated using enrichment factors, sequential extractions, redox potential, acid volatile sulfide and biotest proced ...
... PURPOSE: The particle fractions of soil influence the retention and availability of heavy metal. However, the accumulations of Cu in aggregate size fractions of apple orchard soils due to the long-term application of Cu-based fungicides remain poorly understood. This study aimed to investigate the distribution and availability of Cu in various aggregate fractions of soils from different aged apple ...
... With the increasingly lipophilic nature of candidate drugs, solubility and dissolution rates have become the limiting factors that affect bioavailability of oral and parenteral formulations. The purpose of the study is to improve the dissolution rate of aceclofenac through a nanonization technique. In the present work, particle engineering was carried out to obtain pure drug nanocrystals of aceclo ...
... Metals can pollute soils in both urban and rural areas with severe impacts on the health of humans, plants and animals living there. Information on metal toxicity is therefore important for ecotoxicology. This study investigated the phytotoxicity of different metals frequently found as pollutants in soils: arsenic, cadmium, chromium, lead, mercury, nickel and zinc. Cucumber (Cucumis sativus), sorg ...
amine oxidase (flavin-containing); animal models; anthocyanins; bioavailability; black currants; central nervous system diseases; cognition; cross-over studies; cultivars; emotions; humans; neuroprotective effect; polyphenols; young adults
Abstract:
... The consumption of berry fruits engenders a number of benefits in animal models, including improvements in cognitive performance, slowing of cognitive decline during natural ageing, and neuroprotection. These findings, along with limited human epidemiological evidence, suggest a potential role for the consumption of berry fruit polyphenols in improving human cognitive performance. The current stud ...
... Standard static‐exposure acute lethality tests were conducted with Daphnia magna neonates exposed to binary or ternary mixtures of Cd, Cu, and Zn in moderately hard reconstituted water that contained 3 mg dissolved organic carbon/L added as Suwannee River fulvic acid. These experiments were conducted to test for additive toxicity (i.e., the response to the mixture can be predicted by combining the ...
... Rice, a staple crop for more than half of the world’s population, takes up and accumulates more cadmium (Cd) than do other cereal crops (Chaney et al. in Z Naturforsch C 60(3–4):190–198, 2005). Rice is the leading source of dietary Cd for people who consume rice as their main food resource. A low grain Cd (GCd) concentration is a highly desirable trait for food safety. Low GCd is a top priority ta ...
... Functional peptides are attractive as novel therapeutic reagents because their amino acid sequences are flexible in adopting and mimicking the local functional features of proteins. These peptides are of low molecular weight, synthetically versatile and inexpensive to produce, suggesting that they can be used as drug targeting, potent, stable and bioavailable agents. A short bioactive peptide is e ...