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1.
Nutrients ; 16(2)2024 Jan 19.
Artigo em Inglês | MEDLINE | ID: mdl-38276545

RESUMO

BACKGROUND: Alzheimer's disease (AD) and Parkinson's disease (PD) are multifactorial neurodegenerative disorders that are mostly treated with drugs inhibiting key enzymes of cholinergic and aminergic neurotransmission, such as acetyl and butyryl cholinesterase (AChE, BuChE) or monoamine oxidases (MAO)-A/B, and of Aß1-40 aggregation. Diet plant components with multitarget functions are promising compounds in the prevention of AD and PD. Our aim was to identify neuroprotective compounds from Annurca apple polyphenol extract (AFPE). METHODS: AFPE was fractionated by gel filtration, and the eluted peaks were subjected to chemical analyses (i.e., RP-HPLC and mass spectrometry), determination of inhibitory enzyme activity and cell effects by MTT, and morphology assays. RESULTS: In AFPE, we identified thaumatin-like protein 1a, belonging to the pathogenesis-related protein (PR) family. This protein showed the best inhibitory activity on AChE, MAO-A (IC50 = 5.53 µM and 1.71 µM, respectively), and Aß1-40 fibril aggregation (IC50 = 9.16 µM), compared to AFPE and other polyphenol-containing fractions. Among the latter, Peak 4 reverted Aß fibril formation (IC50 = 104.87 µM). Moreover, thaumatin-like protein 1a protected AGS and MKN-28 cells from serum-deprivation-induced stress conditions. CONCLUSIONS: We showed that AFPE exerted neuroprotective functions not only through its polyphenols but also through thaumatin-like protein 1a, which acted like a multitarget molecule.


Assuntos
Doença de Alzheimer , Ácido Clorogênico , Flavonoides , Fármacos Neuroprotetores , Doença de Parkinson , Humanos , Inibidores da Monoaminoxidase/farmacologia , Inibidores da Monoaminoxidase/uso terapêutico , Cromatografia Gasosa-Espectrometria de Massas , Doença de Alzheimer/tratamento farmacológico , Monoaminoxidase/metabolismo , Taninos , Peptídeos beta-Amiloides/metabolismo , Aditivos Alimentares/uso terapêutico , Doença de Parkinson/tratamento farmacológico , Fármacos Neuroprotetores/farmacologia , Fármacos Neuroprotetores/uso terapêutico , Inibidores da Colinesterase/farmacologia , Acetilcolinesterase/metabolismo
2.
Phytomedicine ; 106: 154407, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36070662

RESUMO

BACKGROUND: As one of the most classic antineoplastic agents, doxorubicin (Dox) is extensively used to treat a wide range of cancers. Nevertheless, the clinical outcomes of Dox-based therapies are severely hampered due to the significant cardiotoxicity. Glycyrrhetinic acid (GA) is the major biologically active compound of licorice, one of the most well-known food additives and medicinal plants in the world. We previously demonstrated that GA has the potential capability to protect mice from Dox-induced cardiac injuries. However, the underlying cardioprotective mechanism remains unexplored. PURPOSE: To investigate the cardioprotective benefits of GA against Dox-induced cardiotoxicity and to elucidate its mechanisms of action. STUDY DESIGN/METHODS: H9c2 cardiomyoblasts and AC16 cardiomyocytes were used as the cell models in vitro. A transgenic zebrafish model and a 4T1 mouse breast cancer model were applied to explore the cardioprotective effects of GA in vivo. RESULTS: In vitro, GA inhibited Dox-induced cell death and LDH release in H9c2 and AC16 cells without affecting the anti-cancer effects of Dox. GA significantly alleviated Dox-induced ROS generation, mitochondrial dysfunction, and apoptosis in H9c2 cells. Moreover, GA abolished the expression of pro-apoptotic proteins and restored Nrf2/HO-1 signaling pathway in Dox-treated H9c2 cells. On the contrary, Nrf2 knockdown strongly abrogated the cardioprotective effects of GA on Dox-treated H9c2 cells. In vivo, GA attenuated Dox-induced cardiac dysfunction by restoring stroke volume, cardiac output, and fractional shortening in the transgenic zebrafish embryos. In a 4T1 mouse breast cancer model, GA dramatically prevented body weight loss, attenuated cardiac dysfunction, and prolonged survival rate in Dox-treated mice, without compromising Dox's anti-tumor efficacy. Consistently, GA attenuated oxidative injury, reduced cardiomyocytes apoptosis, and restored the expressions of Nrf2 and HO-1 in Dox-treated mouse hearts. CONCLUSION: GA protects against Dox-induced cardiotoxicity by suppressing oxidative stress, mitochondrial dysfunction, and apoptosis via upregulating Nrf2/HO-1 signaling pathway. These findings could provide solid evidence to support the further development of GA as a feasible and safe adjuvant to Dox chemotherapy for overcoming Dox-induced cardiotoxicity.


Assuntos
Antineoplásicos , Cardiotoxicidade , Ácido Glicirretínico , Animais , Camundongos , Antineoplásicos/farmacologia , Apoptose , Proteínas Reguladoras de Apoptose/metabolismo , Cardiotoxicidade/tratamento farmacológico , Cardiotoxicidade/metabolismo , Doxorrubicina/toxicidade , Aditivos Alimentares/metabolismo , Aditivos Alimentares/farmacologia , Aditivos Alimentares/uso terapêutico , Ácido Glicirretínico/farmacologia , Miócitos Cardíacos , Fator 2 Relacionado a NF-E2/metabolismo , Estresse Oxidativo , Espécies Reativas de Oxigênio/metabolismo , Transdução de Sinais , Peixe-Zebra/metabolismo
3.
Acta Pharmacol Sin ; 43(10): 2482-2494, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35292770

RESUMO

Alzheimer's disease (AD) is a progressive neurodegenerative disorder with cognitive impairment that currently is uncurable. Previous study shows that trilobatin (TLB), a naturally occurring food additive, exerts neuroprotective effect in experimental models of AD. In the present study we investigated the molecular mechanisms underlying the beneficial effect of TLB on experimental models of AD in vivo and in vitro. APP/PS1 transgenic mice were administered TLB (4, 8 mg· kg-1 ·d-1, i.g.) for 3 months; rats were subjected to ICV injection of Aß25-35, followed by administration of TLB (2.5, 5, 10 mg· kg-1 ·d-1, i.g.) for 14 days. We showed that TLB administration significantly and dose-dependently ameliorated the cognitive deficits in the two AD animal models, assessed in open field test, novel object recognition test, Y-maze test and Morris water maze test. Furthermore, TLB administration dose-dependently inhibited microglia and astrocyte activation in the hippocampus of APP/PS1 transgenic mice accompanied by decreased expression of high-mobility group box 1 (HMGB1), TLR4 and NF-κB. In Aß25-25-treated BV2 cells, TLB (12.5-50 µM) concentration-dependently increased the cell viability through inhibiting HMGB1/TLR4/NF-κB signaling pathway. HMGB1 overexpression abrogated the beneficial effects of TLB on BV2 cells after Aß25-35 insults. Molecular docking and surface plasmon resonance assay revealed that TLB directly bound to HMGB1 with a KD value of 8.541×10-4 M. Furthermore, we demonstrated that TLB inhibited Aß25-35-induced acetylation of HMGB1 through activating SIRT3/SOD2 signaling pathway, thereby restoring redox homeostasis and suppressing neuroinflammation. These results, for the first time, unravel a new property of TLB: rescuing cognitive impairment of AD via targeting HMGB1 and activating SIRT3/SOD2 signaling pathway.


Assuntos
Doença de Alzheimer , Disfunção Cognitiva , Proteína HMGB1 , Fármacos Neuroprotetores , Sirtuína 3 , Superóxido Dismutase , Doença de Alzheimer/tratamento farmacológico , Peptídeos beta-Amiloides , Animais , Disfunção Cognitiva/tratamento farmacológico , Modelos Animais de Doenças , Flavonoides , Aditivos Alimentares/farmacologia , Aditivos Alimentares/uso terapêutico , Proteína HMGB1/metabolismo , Camundongos , Camundongos Transgênicos , Simulação de Acoplamento Molecular , NF-kappa B/metabolismo , Fármacos Neuroprotetores/farmacologia , Fármacos Neuroprotetores/uso terapêutico , Polifenóis , Ratos , Transdução de Sinais , Sirtuína 3/efeitos dos fármacos , Sirtuína 3/metabolismo , Superóxido Dismutase/efeitos dos fármacos , Superóxido Dismutase/metabolismo , Receptor 4 Toll-Like/metabolismo
4.
Carbohydr Polym ; 273: 118597, 2021 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-34560997

RESUMO

Curdlan is widely applied in the food and pharmaceutical industries. This review focuses on the biosynthetic pathways, regulatory mechanisms and metabolic engineering strategies for curdlan production. Firstly, curdlan biosynthesis is discussed. Furthermore, various strategies to increase curdlan production are summarized from four aspects, including the overexpression of genes for curdlan biosynthesis, weakening/knockdown of genes from competing pathways, increasing the supply of curdlan precursors, and optimization of fermentation conditions. Moreover, the emerging and advanced applications of curdlan are introduced. Finally, the challenges that are frequently encountered during curdlan biosynthesis are noted with a discussion of directions for curdlan production.


Assuntos
beta-Glucanas/metabolismo , Animais , Bactérias/metabolismo , Vias Biossintéticas , Fermentação , Aditivos Alimentares/química , Aditivos Alimentares/metabolismo , Aditivos Alimentares/uso terapêutico , Humanos , Engenharia Metabólica , beta-Glucanas/química , beta-Glucanas/uso terapêutico
5.
Int Immunopharmacol ; 96: 107477, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-33813367

RESUMO

Promoting plaque stability is of great significance for prevention and treatment of cardiovascular diseases. 7-difluoromethoxy-5,4'-dimethoxygenistein (DFMG) is a novel active compound synthesized using genistein, which exerts anti-atherosclerotic effect. In this study, we evaluated effects of DFMG on plaque stability in ApoE-/- mice fed with high fat diet (HFD), and explored the molecular mechanism by using ApoE-/-TLR4-/- mice and RAW264.7 cells. Here, we found that DFMG significantly reduced plaque areas, macrophages infiltration and apoptosis, and TLR4 expression in HFD-fed ApoE-/- mice. Meanwhile, DFMG increased collagen fibers, smooth muscle cells and TIPE2 expression in plaques and media. Besides, TLR4 knockout promoted the protective effects of DFMG on plaques. In vitro, DFMG decreased lysophosphatidylcholine (LPC)-induced macrophages apoptosis and TLR4, while upregulated TIPE2. Moreover, TIPE2 reduced TLR4, MyD88, p-NF-κB p65Ser276, cleaved Caspase-3 overproduction, and enhanced effects of DFMG on LPC-induced macrophages. Overall, our study demonstrates that DFMG can promote plaque stability by reducing macrophage apoptosis through TIPE2/TLR4 signaling pathway, which suggests DFMG should be used to develop food additives or drugs for preventing atherosclerosis.


Assuntos
Aditivos Alimentares/uso terapêutico , Genisteína/análogos & derivados , Peptídeos e Proteínas de Sinalização Intracelular/metabolismo , Macrófagos/patologia , Placa Aterosclerótica/tratamento farmacológico , Animais , Apolipoproteínas E/genética , Dieta Hiperlipídica , Modelos Animais de Doenças , Regulação para Baixo , Genisteína/farmacologia , Humanos , Lipídeo A/análogos & derivados , Lipídeo A/genética , Lipídeo A/metabolismo , Macrófagos/efeitos dos fármacos , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Células RAW 264.7 , Transdução de Sinais
6.
Neurogastroenterol Motil ; 33(4): e14020, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33112027

RESUMO

BACKGROUND: Cisplatin is an antineoplastic drug known to produce intense vomiting, gastric dysmotility, and peripheral neuropathy. Monosodium glutamate (MSG) is a flavor enhancer with prokinetic properties potentially useful for cancer patients under chemotherapy. Our aim was to test whether MSG may improve gastrointestinal motor dysfunction and other adverse effects induced by repeated cisplatin in rats. METHODS: Male Wistar rats were exposed or not to MSG (4 g L-1 ) in drinking water from week 0 to 1 week after treatment. On the first day of weeks 1-5, rats were treated with saline or cisplatin (2 mg kg-1  week-1 , ip). Gastrointestinal motility was measured by radiological methods after first and fifth administrations, as well as 1 week after treatment finalization. One week after treatment, the threshold for mechanical somatic sensitivity was recorded. Finally, samples of stomach, terminal ileum and kidneys were evaluated in sections using conventional histology. The myenteric plexus was immunohistochemically evaluated on distal colon whole-mount preparations. KEY RESULTS: Monosodium glutamate prevented the development of cisplatin-induced neuropathy and partially improved intestinal transit after the fifth cisplatin administration with little impact on gastric dysmotility. MSG did not improve the histological damage of gut wall, but prevented the changes induced by cisplatin in the colonic myenteric plexus. CONCLUSION AND INFERENCES: Our results suggest that MSG can improve some dysfunctions caused by anticancer chemotherapy in the gut and other systems, associated, at least partially, with neuroprotectant effects. The potentially useful adjuvant role of this food additive to reduce chemotherapy-induced sequelae warrants further evaluation.


Assuntos
Antineoplásicos/toxicidade , Cisplatino/toxicidade , Gastroenteropatias/tratamento farmacológico , Motilidade Gastrointestinal/efeitos dos fármacos , Doenças do Sistema Nervoso Periférico/prevenção & controle , Glutamato de Sódio/uso terapêutico , Animais , Aditivos Alimentares/farmacologia , Aditivos Alimentares/uso terapêutico , Esvaziamento Gástrico/efeitos dos fármacos , Esvaziamento Gástrico/fisiologia , Gastroenteropatias/induzido quimicamente , Gastroenteropatias/fisiopatologia , Motilidade Gastrointestinal/fisiologia , Masculino , Doenças do Sistema Nervoso Periférico/induzido quimicamente , Doenças do Sistema Nervoso Periférico/fisiopatologia , Ratos , Ratos Wistar , Glutamato de Sódio/farmacologia
7.
Neuropsychopharmacology ; 46(4): 860-870, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33069159

RESUMO

Cocaine abuse continues to be a serious health problem worldwide. Despite intense research, there is still no FDA-approved medication to treat cocaine use disorder (CUD). In this report, we explored the potential utility of beta-caryophyllene (BCP), an FDA-approved food additive for the treatment of CUD. We found that BCP, when administered intraperitoneally or intragastrically, dose-dependently attenuated cocaine self-administration, cocaine-conditioned place preference, and cocaine-primed reinstatement of drug seeking in rats. In contrast, BCP failed to alter food self-administration or cocaine-induced hyperactivity. It also failed to maintain self-administration in a drug substitution test, suggesting that BCP has no abuse potential. BCP was previously reported to be a selective CB2 receptor agonist. Unexpectedly, pharmacological blockade or genetic deletion of CB1, CB2, or GPR55 receptors in gene-knockout mice failed to alter BCP's action against cocaine self-administration, suggesting the involvement of non-CB1, non-CB2, and non-GPR55 receptor mechanisms. Furthermore, pharmacological blockade of µ opioid receptor or Toll-like receptors complex failed to alter, while blockade of peroxisome proliferator-activated receptors (PPARα, PPARγ) reversed BCP-induced reduction in cocaine self-administration, suggesting the involvement of PPARα and PPARγ in BCP's action. Finally, we used electrical and optogenetic intracranial self-stimulation (eICSS, oICSS) paradigms to study the underlying neural substrate mechanisms. We found that BCP is more effective in attenuation of cocaine-enhanced oICSS than eICSS, the former driven by optical activation of midbrain dopamine neurons in DAT-cre mice. These findings indicate that BCP may be useful for the treatment of CUD, likely by stimulation of PPARα and PPARγ in the mesolimbic system.


Assuntos
Transtornos Relacionados ao Uso de Cocaína , Cocaína , Animais , Comportamento Animal , Transtornos Relacionados ao Uso de Cocaína/tratamento farmacológico , Relação Dose-Resposta a Droga , Reposicionamento de Medicamentos , Aditivos Alimentares/uso terapêutico , Camundongos , PPAR alfa/uso terapêutico , PPAR gama , Sesquiterpenos Policíclicos , Ratos , Receptores de Canabinoides , Autoadministração
8.
Int J Biol Macromol ; 170: 33-41, 2021 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-33352157

RESUMO

Fast green FCF (FGF) is often used in foods, pharmaceuticals, and cosmetics. However, little is known about the interactions of FGF with amyloid-ß protein (Aß) associated with Alzheimer's disease. In this study, the inhibitory effects of FGF on Aß fibrillogenesis, the disruption of preformed Aß fibrils, the reduction of Aß-induced cytotoxicity, and the attenuation of Aß-induced learning and memory impairments in mice were investigated. FGF significantly inhibited Aß fibrillogenesis and disintegrated the mature fibrils as evidenced by thioflavin T fluorescence and atomic force microscopy studies. Co-incubation of Aß with FGF greatly reduced Aß-induced cytotoxicity in vitro. Moreover, FGF showed a protective effect against cognitive impairment in Aß-treated mice. Molecular dynamics simulations further showed that FGF could synergistically interact with the Aß17-42 pentamer via electrostatic interactions, hydrogen bonds and π-π interactions, which reduced the ß-sheet content, and disordered random coils and bend structures of the Aß17-42 pentamer. This study offers a comprehensive understanding of the inhibitory effects of FGF against Aß neurotoxicity, which is critical for the search of effective food additives that can combat amyloid-associated disease.


Assuntos
Peptídeos beta-Amiloides/efeitos dos fármacos , Amiloide/antagonistas & inibidores , Disfunção Cognitiva/prevenção & controle , Aditivos Alimentares/uso terapêutico , Corantes Verde de Lissamina/uso terapêutico , Fármacos Neuroprotetores/uso terapêutico , Agregação Patológica de Proteínas/prevenção & controle , Doença de Alzheimer/metabolismo , Doença de Alzheimer/prevenção & controle , Amiloide/efeitos dos fármacos , Amiloide/toxicidade , Amiloide/ultraestrutura , Peptídeos beta-Amiloides/química , Animais , Disfunção Cognitiva/etiologia , Disfunção Cognitiva/metabolismo , Comportamento Exploratório/efeitos dos fármacos , Aditivos Alimentares/farmacologia , Humanos , Ligação de Hidrogênio , Corantes Verde de Lissamina/farmacologia , Camundongos , Microscopia de Força Atômica , Modelos Moleculares , Simulação de Dinâmica Molecular , Teste do Labirinto Aquático de Morris/efeitos dos fármacos , Fármacos Neuroprotetores/farmacologia , Fragmentos de Peptídeos/química , Fragmentos de Peptídeos/efeitos dos fármacos , Agregação Patológica de Proteínas/tratamento farmacológico , Estrutura Secundária de Proteína/efeitos dos fármacos , Distribuição Aleatória , Eletricidade Estática
9.
Int J Biol Macromol ; 165(Pt B): 2550-2564, 2020 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-33115647

RESUMO

Demand for safe, environmentally friendly and minimally processed food additives with intrinsic technological (stabilizing, texturizing, structuring) and functional potential is already on the rise. There are actually several natural excipients eligible for pharmaceutical formulation. Mucilage, as a class constitutes arabinoxylan and rhamnogalacturonan-based biomolecules used in the pharmaceutical, environmental as well as phytoremediation industries owing to its particular structure and properties. These compounds are widely used in pharmaceutical, food and cosmetics, as well as, in agriculture, paper industries. This review emphasizes mucilage valuable applications in the pharmaceutical and industrial fields. In this context, much focus has recently been given to the valorization of mucilage as an ingredient for food or nutraceutical applications. Furthermore, different optimization and extraction techniques are presented to develop better utilization and/or enhanced yield of mucilage. The highlighted mucilage extraction methods warrant assessing up-scale processes to encourage for its industrial applications. The current article capitalizes on cutting-edge characteristics of mucilage and posing for other possible innovative applications in non-food industries. Here, the first holistic overview of mucilage with regards to its physicochemical properties and potential novel usages is presented.


Assuntos
Biodegradação Ambiental , Mucilagem Vegetal/química , Polissacarídeos/química , Xilanos/química , Aditivos Alimentares/química , Aditivos Alimentares/uso terapêutico , Humanos , Extratos Vegetais/química , Extratos Vegetais/uso terapêutico , Mucilagem Vegetal/uso terapêutico , Polissacarídeos/uso terapêutico , Viscosidade , Xilanos/uso terapêutico
10.
Int Immunopharmacol ; 86: 106766, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32652504

RESUMO

BACKGROUND: Limonene (LIM) and its main metabolite perillyl alcohol (POH) are ingredients found in food with promising chemical entities due to their pharmacological profile. In this study, we hypothesized that LIM and POH are two molecules capable of accelerating the regenerative process and alleviating neuropathic pain. METHODS: Animals were treated daily (LIM, POH and saline) for 28 days and during this period evaluated for mechanical hyperalgesia, astrocyte participation by immunofluorescence for GFAP, and ELISA was used to quantify IL-1ß and TNF-α in the spinal cord. Western blot analysis of the following proteins was also performed: GFAP, GAP-43, NGF and ERK. For motor deficit analysis, tests were performed to assess hind paw muscle strength and footprints through gait (SFI). RESULTS: Both POH and LIM accelerated the regenerative process and improved motor deficits comparing to positive control; however, POH was more effective, particularly between the 2nd and 3rd week after the nerve injury, increasing GAP-43, NGF and the phosphorylated ERK immunocontent. Moreover, POH and LIM were able to reduce hyperalgesia and astrocytosis. CONCLUSIONS: Both substances, LIM and POH, improved the regeneration process and sensory and motor function recovery in the PNI model in mice by mitigating the inflammatory reactions and up-regulating the neurotrophic process.


Assuntos
Anti-Inflamatórios/uso terapêutico , Aditivos Alimentares/uso terapêutico , Limoneno/uso terapêutico , Monoterpenos/uso terapêutico , Neurônios Motores/fisiologia , Neuralgia/terapia , Traumatismos dos Nervos Periféricos/terapia , Animais , Modelos Animais de Doenças , MAP Quinases Reguladas por Sinal Extracelular/metabolismo , Proteínas Ativadoras de GTPase/metabolismo , Humanos , Interleucina-1beta/metabolismo , Masculino , Camundongos , Fator de Crescimento Neural/metabolismo , Neuralgia/dietoterapia , Regeneração/efeitos dos fármacos , Fator de Necrose Tumoral alfa/metabolismo
11.
Nutrients ; 12(6)2020 Jun 23.
Artigo em Inglês | MEDLINE | ID: mdl-32585942

RESUMO

Thickened fluids are a therapeutic strategy for oropharyngeal dysphagia (OD). However, its therapeutic effect among different phenotypes of OD patients has not yet been compared. We aimed to assess the therapeutic effect and α-amylase resistance of a mixed gum/starch thickener [Fresubin Clear Thickener® (FCT)] on four phenotypes of OD patients: G1) 36 older; G2) 31 head/neck cancer (HNC); G3) 30 Parkinson's disease; and G4) 31 chronic post-stroke. Therapeutic effect of FCT was assessed during videofluoroscopy using the Penetration-Aspiration Scale (PAS), for 5/20 mL boluses, at four levels of shear-viscosity (<50, 250, 1000 and 2000 mPa·s). The effect of α-amylase was assessed after 30 s of oral incubation. Patients had high prevalence of VFS signs of impaired efficacy (98.44%) and safety (70.31%) of swallow with a severe PAS score (4.44 ± 0.20). Most severe OD was in HNC (80.6% unsafe swallows). FCT showed a strong therapeutic effect on the safety of swallow at a range between 250-1000 mPa·s (74.19-96.67%, safe swallows in G1, G3, G4, and 58.06% in G2), without increasing pharyngeal residue. Viscosity was unaffected by α-amylase. Increasing shear-viscosity with FCT causes a strong viscosity-dependent therapeutic effect on the safety of swallow. This effect depends on the phenotype and is similar among older, Parkinson's and post-stroke patients.


Assuntos
Transtornos de Deglutição/dietoterapia , Aditivos Alimentares/farmacologia , Polissacarídeos Bacterianos/administração & dosagem , Amido/administração & dosagem , alfa-Amilases/metabolismo , Idoso , Idoso de 80 Anos ou mais , Transtornos de Deglutição/fisiopatologia , Estabilidade de Medicamentos , Feminino , Aditivos Alimentares/administração & dosagem , Aditivos Alimentares/química , Aditivos Alimentares/uso terapêutico , Humanos , Masculino , Polissacarídeos Bacterianos/química , Polissacarídeos Bacterianos/farmacologia , Reologia , Amido/química , Amido/farmacologia , Amido/uso terapêutico , Viscosidade
12.
Arq. bras. med. vet. zootec. (Online) ; 71(2): 594-602, mar.-abr. 2019. tab
Artigo em Português | LILACS, VETINDEX | ID: biblio-1011288

RESUMO

O objetivo deste trabalho foi avaliar a concentração sérica de cálcio, cloretos, ferro, fósforo e magnésio, as características morfométricas ósseas e a deposição de cálcio e fósforo nas tíbias de frangos de corte recebendo dieta com zero, 0,25 ou 0,50% de bentonita. Um ensaio foi conduzido com 288 frangos de corte de 14 a 21 dias de idade, submetidos a três dietas experimentais: sem inclusão (0,0); com inclusão de 0,25 e com inclusão de 0,50% do adsorvente bentonita. Não foram observadas diferenças (P>0,05) no desempenho das aves, nos níveis séricos de cálcio, cloretos, ferro e magnésio, no entanto os níveis de fósforo foram reduzidos (P<0,05) nas aves que ingeriram dieta com 0,50% de bentonita. Em relação às tíbias, observou-se redução (P<0,05) na matéria mineral (g e %) e no teor de cálcio com a inclusão de 0,50% de bentonita. Houve redução (P<0,05) nos níveis de fósforo das tíbias com a inclusão de 0,25 e 0,50% de bentonita. Conclui-se que a inclusão de até 0,50% do adsorvente de micotoxinas bentonita na dieta de frangos de corte não altera o desempenho zootécnico das aves. A inclusão de 0,25% de bentonita, na dieta de frangos de corte, não altera a concentração dos minerais séricos e a deposição de minerais nas tíbias, entretanto a inclusão de 0,5% reduz os níveis séricos de fósforo, o teor de matéria mineral e a concentração de cálcio e fósforo ósseos, sem afetar as características morfométricas ósseas.(AU)


The aim of this study was to evaluate performance, serum concentration of calcium, chloride, iron, magnesium, phosphorus, and bone characteristics, ash, calcium, and phosphorus in tibias of broilers receiving diet with zero, 0.25 or 0.50% of bentonite. No differences were found on performance of poultry, on serum mineral calcium, chloride, iron, magnesium, however phosphorus levels of broilers fed on diets containing 0.5% bentonite was reduced. With respect to tibia, reduction was observed on mineral matter (g and %) and calcium levels with inclusion of 0.50% bentonite, and reduction on phosphorus levels with inclusion of 0.25 or 0.50% of bentonite on diet. We conclude that the inclusion of up to 0.50% of mycotoxin adsorbent bentonite in diet of broiler does not change broiler performance. The inclusion of 0.25% of bentonite in diet of broiler does not change serum mineral concentration and mineral deposition; however, the inclusion of 0.5% decrease serum levels of phosphorus, the content of bone mineral matter, with not effects on bone morphometric characteristics.(AU)


Assuntos
Animais , Masculino , Bentonita/administração & dosagem , Bentonita/uso terapêutico , Desenvolvimento Ósseo , Antitoxinas/administração & dosagem , Galinhas/crescimento & desenvolvimento , Dieta/veterinária , Aditivos Alimentares/uso terapêutico , Ração Animal , Minerais/análise , Minerais/sangue , Galinhas/microbiologia
13.
J Agric Food Chem ; 66(41): 10921-10929, 2018 Oct 17.
Artigo em Inglês | MEDLINE | ID: mdl-30253646

RESUMO

As a type of functional food additive, phycocyanin is shown to have a potential antineoplastic property. However, its underlying anticancer mechanism in melanoma cells remains unknown. We previously reported a 35S in vivo/vitro labeling analysis for dynamic proteomic (SiLAD) technology. It could exclusively detect protein synthesis rates via pulse labeling of newly expressed proteins by 35S, providing a high time-resolution method for analysis of protein variations. In the present study, we performed a time course analysis in A375 melanoma cells after phycocyanin treatment using SiLAD. Protein expression velocities were specifically visualized and their regulation modes were dynamically traced. Strikingly, novel protein synthesis patterns were discovered in the early phase of phycocyanin treatment, suggesting a possible mechanism of phycocyanin regulation. Furthermore, network analysis and phenotype experiments demonstrated that GRB2-ERK1/2 pathway was involved in phycocyanin-mediated regulation process and responsible for the proliferation suppression of melanoma cell, which could be a therapeutic target for malignant melanoma.


Assuntos
Antineoplásicos/química , Aditivos Alimentares/química , Melanoma/tratamento farmacológico , Ficocianina/química , Neoplasias Cutâneas/tratamento farmacológico , Antineoplásicos/metabolismo , Antineoplásicos/uso terapêutico , Apoptose/efeitos dos fármacos , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Regulação para Baixo/efeitos dos fármacos , Aditivos Alimentares/metabolismo , Aditivos Alimentares/uso terapêutico , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Humanos , Cinética , Sistema de Sinalização das MAP Quinases/efeitos dos fármacos , Ficocianina/metabolismo , Ficocianina/uso terapêutico , Proteínas/metabolismo , Proteômica/métodos
14.
J Nutr Sci Vitaminol (Tokyo) ; 64(4): 284-286, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30175792

RESUMO

The semi-solidified nutrition supplemented with soluble dietary fiber, xanthan gum (XG), inhibited postprandial glycemia in rats. The purpose of the present study is to examine whether XG exerts the same effects in humans. Subjects fasted for 12 h and then ingested the enteral nutrient, Meibalance with or without XG at 9 AM. Blood glucose levels were measured 0, 20, 40, 60, and 120 min after its ingestion. Postprandial blood glucose levels were lower in the XG group than in the control group. At 20 min, postprandial blood glucose levels were significantly lower in the XG group (84±5.3 mg/dL) than in the control group (107±7.8 mg/dL) (p<0.05). A significant difference was also observed in ΔAUC between the two groups. These results demonstrate that XG exerts inhibitory effects on glucose excursion in humans.


Assuntos
Nutrição Enteral/efeitos adversos , Aditivos Alimentares/uso terapêutico , Hiperglicemia/prevenção & controle , Polissacarídeos Bacterianos/uso terapêutico , Prebióticos , Adulto , Glicemia/análise , Feminino , Aditivos Alimentares/administração & dosagem , Aditivos Alimentares/química , Alimentos Formulados/efeitos adversos , Humanos , Hiperglicemia/sangue , Hipoglicemiantes/administração & dosagem , Hipoglicemiantes/química , Hipoglicemiantes/uso terapêutico , Masculino , Polissacarídeos Bacterianos/administração & dosagem , Polissacarídeos Bacterianos/química , Período Pós-Prandial , Prebióticos/administração & dosagem , Solubilidade , Adulto Jovem
15.
Food Funct ; 9(4): 1978-1992, 2018 Apr 25.
Artigo em Inglês | MEDLINE | ID: mdl-29594287

RESUMO

Citrus medica (Citron) is an underutilized fruit plant having various bioactive components in all parts of the plant. The major bioactive compounds present are iso-limonene, citral, limonene, phenolics, flavonones, vitamin C, pectin, linalool, decanal, and nonanal, accounting for several health benefits. Pectin and heteropolysachharides also play a major role as dietary fibers. The potential impact of citron and its bioactive components to prevent or reverse destructive deregulated processes responsible for certain diseases has attracted different researchers' attention. The fruit has numerous nutraceutical benefits, proven by pharmacological studies; for example, anti-catarrhal, capillary protector, anti-hypertensive, diuretic, antibacterial, antifungal, anthelmintic, antimicrobial, analgesic, strong antioxidant, anticancerous, antidiabetic, estrogenic, antiulcer, cardioprotective, and antihyperglycemic. The present review explores new insights into the benefits of citron in various body parts. Throughout the world, citron has been used in making carbonated drinks, alcoholic beverages, syrup, candied peels, jams, marmalade, cordials, and many other value added products, which suggests it is an appropriate raw material to develop healthy processed food. In the present review, the fruit taxonomical classification, beneficial phytochemicals, antioxidant activities, and health benefits are discussed.


Assuntos
Doença Crônica/prevenção & controle , Citrus , Frutas , Alimento Funcional , Animais , Antineoplásicos Fitogênicos/análise , Antineoplásicos Fitogênicos/economia , Antineoplásicos Fitogênicos/isolamento & purificação , Antineoplásicos Fitogênicos/uso terapêutico , Antioxidantes/análise , Antioxidantes/economia , Antioxidantes/isolamento & purificação , Antioxidantes/uso terapêutico , Citrus/química , Citrus/economia , Suplementos Nutricionais/análise , Suplementos Nutricionais/economia , Aditivos Alimentares/química , Aditivos Alimentares/economia , Aditivos Alimentares/isolamento & purificação , Aditivos Alimentares/uso terapêutico , Indústria de Processamento de Alimentos/economia , Frutas/química , Frutas/economia , Humanos , Resíduos Industriais/análise , Resíduos Industriais/economia , Valor Nutritivo , Compostos Fitoquímicos/análise , Compostos Fitoquímicos/economia , Compostos Fitoquímicos/isolamento & purificação , Compostos Fitoquímicos/uso terapêutico , Extratos Vegetais/química , Extratos Vegetais/economia , Extratos Vegetais/isolamento & purificação , Extratos Vegetais/uso terapêutico
16.
Biomed Res Int ; 2018: 4806534, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29511682

RESUMO

Noncaloric sweeteners (NCS) are food additives used to provide sweetness without adding calories. Their consumption has become more widespread around the world in all age groups, including children. The aim of this study is to show the state of the art about the intake of noncaloric sweeteners in children, as well as their benefits and consumption risk. Scientific searchers were used (PUBMED, Scopus, and Scielo) to analyze articles that included keywords (noncaloric sweeteners/saccharin/cyclamate/acesulfame potassium/aspartame/sucralose/stevia/children) in English, Spanish, and Portuguese. Authors conclude that it is imperative that health professionals judiciously and individually evaluate the overall benefits and risks of NCS use in consumers before recommending their use. Different subgroups of the population incorporate products containing NCS in their diet with different objectives, which should be considered when recommending a diet plan for the consumer. In childhood, in earlier age groups, this type of additives should be used as a dietary alternative when other forms of prevention in obesity are not sufficient.


Assuntos
Ingestão de Energia , Aditivos Alimentares/uso terapêutico , Obesidade/dietoterapia , Edulcorantes/uso terapêutico , Aspartame/efeitos adversos , Aspartame/uso terapêutico , Criança , Ciclamatos/efeitos adversos , Ciclamatos/uso terapêutico , Aditivos Alimentares/efeitos adversos , Humanos , Obesidade/epidemiologia , Obesidade/prevenção & controle , Medição de Risco , Sacarina/efeitos adversos , Sacarina/uso terapêutico , Stevia/química , Sacarose/efeitos adversos , Sacarose/análogos & derivados , Sacarose/uso terapêutico , Edulcorantes/administração & dosagem , Tiazinas/efeitos adversos , Tiazinas/uso terapêutico
17.
BMC Oral Health ; 18(1): 24, 2018 02 15.
Artigo em Inglês | MEDLINE | ID: mdl-29448929

RESUMO

BACKGROUND: This study modelled the cost-effectiveness, from a societal perspective, of a program that used fluoridated milk to prevent dental caries in children who were 6 years old at the beginning of the program, versus non-intervention, after 6 years. METHODS: After 6 years, children in the milk-fluoridation program had a significant (34%) reduction in dental caries experience compared to those in the comparison community (i.e., received school milk without added fluoride) (DMFS: 1.06 vs. 1.60). RESULTS: This improvement was achieved with an investment of Thailand Baht (THB) 5,345,048 over 6 years (or THB 11.88 per child, per year) (1 US$ = THB(2011) 30.0). When comparing the costs of the operation of the program and dental treatment in the test community with those of the comparison community, the program resulted in a net societal savings of THB 8,177,179 (range 18,597,122 to THB 7,920,711) after 6 years. This investment would result in 40,500 DMFS avoided in a community with a childhood population of 75,000 [DMFS avoided: 75,000 x (- 0.54)]. CONCLUSIONS: While the analysis has inherent limitations due to its dependence on a range of assumptions, the results suggest that, from a societal perspective, when compared with the non-intervention group, the Bangkok Metropolitan Administration intervention appeared to be a more cost-efficient option than current standard oral health care.


Assuntos
Cárie Dentária/prevenção & controle , Fluoretação/economia , Leite , Serviços de Saúde Escolar , Animais , Criança , Análise Custo-Benefício , Índice CPO , Cárie Dentária/economia , Cárie Dentária/epidemiologia , Fluoretação/métodos , Aditivos Alimentares/economia , Aditivos Alimentares/uso terapêutico , Humanos , Leite/economia , Serviços de Saúde Escolar/economia , Tailândia
18.
Cochrane Database Syst Rev ; 12: CD003211, 2017 12 05.
Artigo em Inglês | MEDLINE | ID: mdl-29207214

RESUMO

BACKGROUND: Gastro-oesophageal reflux (GOR) is common in infants, and feed thickeners are often used to manage it in infants as they are simple to use and perceived to be harmless. However, conflicting evidence exists to support the use of feed thickeners. OBJECTIVES: To evaluate the use of feed thickeners in infants up to six months of age with GOR in terms of reduction in a) signs and symptoms of GOR, b) reflux episodes on pH probe monitoring or intraluminal impedance or a combination of both, or c) histological evidence of oesophagitis. SEARCH METHODS: We used the standard search strategy of the Cochrane Neonatal Review Group to search the Cochrane Central Register of Controlled Trials (CENTRAL 2016, Issue 2), MEDLINE via PubMed (1966 to 22 November 2016), Embase (1980 to 22 November 2016), and CINAHL (1982 to 22 November 2016). We also searched clinical trials databases, conference proceedings, and the reference lists of retrieved articles for randomised controlled trials. SELECTION CRITERIA: We included randomised controlled trials if they examined the effects of feed thickeners as compared to unthickened feeds (no treatment or placebo) in treating GOR in term infants up to six months of age or six months of corrected gestational age for those born preterm. DATA COLLECTION AND ANALYSIS: Two review authors independently identified eligible studies from the literature search. Two review authors independently performed data extraction and quality assessments of the eligible studies. Differences in opinion were resolved by discussion with a third review author, and consensus was reached among all three review authors. We used the GRADE approach to assess the quality of the evidence. MAIN RESULTS: Eight trials recruiting a total of 637 infants met the inclusion criteria for the systematic review. The infants included in the review were mainly formula-fed term infants. The trials were of variable methodological quality. Formula-fed term infants with GOR on feed thickeners had nearly two fewer episodes of regurgitation per day (mean difference -1.97 episodes per day, 95% confidence interval (CI) -2.32 to -1.61; 6 studies, 442 infants, moderate-certainty evidence) and were 2.5 times more likely to be asymptomatic from regurgitation at the end of the intervention period (risk ratio 2.50, 95% CI 1.38 to 4.51; number needed to treat for an additional beneficial outcome 5, 95% CI 4 to 13; 2 studies, 186 infants, low-certainty evidence) when compared to infants with GOR on unthickened feeds. No studies reported failure to thrive as an outcome. We found low-certainty evidence based on 2 studies recruiting 116 infants that use of feed thickeners improved the oesophageal pH probe parameters of reflux index (i.e. percentage of time pH < 4), number of reflux episodes lasting longer than 5 minutes, and duration of longest reflux episode. No major side effects were reported with the use of feed thickeners. Information was insufficient to conclude which type of feed thickener is superior. AUTHORS' CONCLUSIONS: Gastro-oesophageal reflux is a physiological self resolving phenomenon in infants that does not necessarily require any treatment. However, we found moderate-certainty evidence that feed thickeners should be considered if regurgitation symptoms persist in term bottle-fed infants. The reduction of two episodes of regurgitation per day is likely to be of clinical significance to caregivers. Due to the limited information available, we were unable to assess the use of feed thickeners in infants who are breastfeeding or preterm nor could we conclude which type of feed thickener is superior.


Assuntos
Aditivos Alimentares/uso terapêutico , Refluxo Gastroesofágico/terapia , Monitoramento do pH Esofágico , Refluxo Gastroesofágico/epidemiologia , Humanos , Lactente , Fórmulas Infantis , Recém-Nascido , Ensaios Clínicos Controlados Aleatórios como Assunto
19.
Molecules ; 22(3)2017 Feb 26.
Artigo em Inglês | MEDLINE | ID: mdl-28245635

RESUMO

Chlorogenic acid (5-O-caffeoylquinic acid) is a phenolic compound from thehydroxycinnamic acid family. This polyphenol possesses many health-promoting properties, mostof them related to the treatment of metabolic syndrome, including anti-oxidant, anti-inflammatory,antilipidemic, antidiabetic, and antihypertensive activities. The first part of this review will discussthe role of chlorogenic acid as a nutraceutical for the prevention and treatment of metabolicsyndrome and associated disorders, including in vivo studies, clinical trials, and mechanisms ofaction. The second part of the review will be dealing with the role of chlorogenic acid as a foodadditive. Chlorogenic acid has shown antimicrobial activity against a wide range of organisms,including bacteria, yeasts, molds, viruses, and amoebas. These antimicrobial properties can beuseful for the food industry in its constant search for new and natural molecules for thepreservation of food products. In addition, chlorogenic acid has antioxidant activity, particularlyagainst lipid oxidation; protective properties against degradation of other bioactive compoundspresent in food, and prebiotic activity. The combination of these properties makes chlorogenic acidan excellent candidate for the formulation of dietary supplements and functional foods.


Assuntos
Ácido Clorogênico/análogos & derivados , Ácido Clorogênico/administração & dosagem , Aditivos Alimentares/administração & dosagem , Síndrome Metabólica/dietoterapia , Ácido Quínico/análogos & derivados , Animais , Ácido Clorogênico/uso terapêutico , Ensaios Clínicos como Assunto , Suplementos Nutricionais , Modelos Animais de Doenças , Aditivos Alimentares/uso terapêutico , Humanos , Síndrome Metabólica/prevenção & controle , Ácido Quínico/administração & dosagem , Ácido Quínico/uso terapêutico , Resultado do Tratamento
20.
Crit Rev Food Sci Nutr ; 57(10): 2218-2244, 2017 Jul 03.
Artigo em Inglês | MEDLINE | ID: mdl-26252442

RESUMO

The increasing prevalence of overweight and obesity requires new, effective prevention and treatment strategies. One approach to reduce energy intake is by developing novel foods with increased satiating properties, which may be accomplished by slowing down lipolysis to deliver substrates to the ileum, thereby enhancing natural gut-brain signaling pathways of satiety that are normally induced by meal intake. To develop slow release food additives, their processing in the gastrointestinal tract has to be understood; therefore, we start from a general description of the digestive system and relate that to in vitro modeling, satiety, and lipolytic mechanisms. The effects of physicochemical lipid composition, encapsulation matrix, and interfacial structure on lipolysis are emphasized. We give an overview of techniques and materials used, and discuss partitioning, which may be a key factor for encapsulation performance. Targeted release capsules that delay lipolysis form a real challenge because of the high efficiency of the digestive system; hardly any proof was found that intact orally ingested lipids can be released in the ileum and thereby induce satiety. We expect that this challenge could be tackled with structured o/w-emulsion-based systems that have some protection against lipase, e.g., by hindering bile salt adsorption and/or delaying lipase diffusion.


Assuntos
Gorduras na Dieta/administração & dosagem , Digestão , Regulação para Baixo , Alimentos Especializados , Lipólise , Modelos Biológicos , Sobrepeso/dietoterapia , Animais , Depressores do Apetite/administração & dosagem , Depressores do Apetite/metabolismo , Depressores do Apetite/uso terapêutico , Gorduras na Dieta/metabolismo , Gorduras na Dieta/uso terapêutico , Emulsões , Ingestão de Energia , Aditivos Alimentares/metabolismo , Aditivos Alimentares/uso terapêutico , Tecnologia de Alimentos/tendências , Humanos , Absorção Intestinal , Sobrepeso/metabolismo , Resposta de Saciedade
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