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1.
J Dermatolog Treat ; 35(1): 2378163, 2024 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38991555

RESUMO

PURPOSE: We aim to explore a potential treatment strategy for hair loss. MATERIALS AND METHODS: A male 6-year-old child was diagnosed with hidrotic ectodermal dysplasia 2 (HED2) caused by GJB6 (p.G11R) mutations. He presented at our clinic with diffuse thinning and fine and brittle hair since birth. Additionally, the child exhibited abnormal development of teeth, fingernails, and toenails. The condition of the child's hair had not improved significantly with age. He was treated with botanical extracts combined with Minoxidil. RESULTS: After one and a half months of treatment, the patient showed remarkable hair growth. CONCLUSIONS: Our team has previously used botanical extracts in combination for the treatment of autosomal recessive wooly hair in children. In the present case, treatment with botanical extract combined with minoxidil was found to be equally efficacious. This case report provides valuable information for future studies on the use of botanical extracts in treating hair loss, as well as a safe and effective potential treatment strategy for children with congenital alopecia.


Assuntos
Alopecia , Displasia Ectodérmica , Minoxidil , Extratos Vegetais , Humanos , Masculino , Criança , Extratos Vegetais/administração & dosagem , Alopecia/tratamento farmacológico , Alopecia/patologia , Displasia Ectodérmica/tratamento farmacológico , Displasia Ectodérmica/genética , Displasia Ectodérmica/patologia , Quimioterapia Combinada , Mutação , Resultado do Tratamento , Conexinas/genética
2.
J Nutr ; 2024 Jul 04.
Artigo em Inglês | MEDLINE | ID: mdl-38971530

RESUMO

Dietary supplement use in the United States is widespread and increasing, especially among certain population groups, such as older Americans. The science surrounding dietary supplements has evolved substantially over the last few decades since their formal regulation in 1994. Much has been learned about the mechanisms of action of many dietary supplement ingredients, but the evidence on their health effects is still building. As is true of much nutrition research, there are many studies that point to health effects, but not all are at the level of scientific evidence (e.g., randomized controlled interventions), rigor, or quality needed for definitive statements of efficacy regarding clinical endpoints. New technologies and approaches are being applied to the science of dietary supplements, including nutrigenomics and microbiome analysis, data science, artificial intelligence, and machine learning - all of which can elevate the science behind dietary supplements. Products can contain an array of bioactive compounds derived from foods as well as from medicinal plants, which creates enormous challenges in data collection and management. Clinical applications, particularly those aimed at providing personalized nutrition options for patients, have become more sophisticated as dietary supplements are incorporated increasingly into clinical practice and self-care. The goals of this paper are to provide historical context for the regulation and science of dietary supplements, identify research resources, and suggest some future directions for science in this field.

3.
J Diet Suppl ; : 1-18, 2024 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-38562009

RESUMO

Acetaminophen (APAP) overdose is one of the most common causes of acute liver injury. The current standard-of-care treatment for APAP hepatotoxicity, N-acetyl-l-cysteine, is highly effective when administered early after overdose, but loses efficacy in later-presenting patients. As a result, there is interest in the identification of new treatments for APAP overdose patients. Natural products are a promising source of new treatments because many are purported to have hepatoprotective effects. In fact, a great deal of research has been done to identify natural products that can protect against APAP-induced liver injury. However, serious concerns have been raised about the rigor and human relevance of these studies. Here, we systematically reviewed the APAP-natural product literature from 2013 to 2023 to determine the veracity of these concerns and the scope of the potential problem. The results substantiate the concerns that have been previously raised and point to concrete steps that can be taken to improve APAP-natural product research.

4.
Biochem Biophys Res Commun ; 698: 149553, 2024 Feb 26.
Artigo em Inglês | MEDLINE | ID: mdl-38271833

RESUMO

Ever since the proposal of ferroptosis, it has been studied as a nonapoptotic cell death caused by iron ion-dependent phospholipid (PL) peroxidation. We previously showed that treatment of human hepatoma cell line HepG2 with prepared PL hydroperoxide (PLOOH) resulted in ferroptosis. However, in human sebum, the major hydroperoxide is not PLOOH but squalene hydroperoxide (SQOOH), and to our knowledge, it is not established yet whether SQOOH induces ferroptosis in the skin. In this study, we synthesized SQOOH and treated human keratinocyte HaCaT cells with SQOOH. The results showed that SQOOH induces ferroptosis in HaCaT cells in the same way that PLOOH causes ferroptosis in HepG2 cells. Some natural antioxidants (botanical extracts) could inhibit the ferroptosis in both the cell types. Consequently, future research focus would revolve around the involvement of SQOOH-induced ferroptosis in skin pathologies as well as the prevention and treatment of skin diseases through inhibition of ferroptosis by botanical extracts.


Assuntos
Ferroptose , Esqualeno , Humanos , Esqualeno/farmacologia , Esqualeno/metabolismo , Peróxido de Hidrogênio/metabolismo , Células HaCaT , Peroxidação de Lipídeos , Queratinócitos/metabolismo
5.
Anal Chim Acta ; 1274: 341568, 2023 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-37455080

RESUMO

Sesquiterpene pyridine alkaloids (SPAs) are bioactive analogues derived from the genus Tripterygium and have anti-inflammatory and anti-rheumatic properties. Attributed to the similar sesquiterpene structures, the total SPAs showed severe peak overlap in 1D NMR and HPLC, leading to difficulties in identification and quantification. Interestingly, the application of band-selective HSQC NMR that specifically excited the region corresponding to the H-3 of SPAs prompted a signal separation of the total SPAs. Based on the high resolution, 23 SPAs were identified from the band-selective HSQC spectrum. The coupling constants (JCH, JHH) and relaxation times (T1, T2) of SPAs were measured, and it was found that they caused less than 1% attenuation of the HSQC signals, so the HSQC signals of SPAs had almost uniform responses. The concentrations of 23 SPAs were determined by standard curve method, using wilforgine as the calibration. In addition, we extended the pulse length-based concentration determination (PULCON) as a more efficient external standard method to the band-selective HSQC spectrum, and the results showed that the concentrations of alkaloids determined by PULCON were consistent with those measured by standard curve method. The developed quantification approach was validated according to the <761> of United States Pharmacopoeia (USP), demonstrating that the established band-selective HSQC approach is reliable for the rapid quantification of analogues in botanical extracts.


Assuntos
Alcaloides , Sesquiterpenos , Tripterygium/química , Alcaloides/química , Espectroscopia de Ressonância Magnética , Sesquiterpenos/química , Piridinas/química
6.
Nutrients ; 15(11)2023 Jun 03.
Artigo em Inglês | MEDLINE | ID: mdl-37299588

RESUMO

Sarcopenia is characterized by an age-related loss of skeletal muscle mass and function and has been recognized as a clinical disease by the World Health Organization since 2016. Substantial evidence has suggested that dietary modification can be a feasible tool to combat sarcopenia. Among various natural dietary ingredients, the present study focused on botanical and marine extracts, phytochemicals, and probiotics. Aims of this review were (1) to provide basic concepts including the definition, diagnosis, prevalence, and adverse effects of sarcopenia, (2) to describe possible pathological mechanisms including protein homeostasis imbalance, inflammation, mitochondrial dysfunction, and satellite cells dysfunction, and (3) to analyze recent experimental studies reporting potential biological functions against sarcopenia. A recent literature review for dietary ingredients demonstrated that protein homeostasis is maintained via an increase in the PI3K/Akt pathway and/or a decrease in the ubiquitin-proteasome system. Regulation of inflammation has primarily targeted inhibition of NF-κB signaling. Elevated Pgc-1α or Pax7 expression reverses mitochondrial or satellite cell dysfunction. This review provides the current knowledge on dietary components with the potential to assist sarcopenia prevention and/or treatment. Further in-depth studies are required to elucidate the role of and develop various dietary materials for healthier aging, particularly concerning muscle health.


Assuntos
Sarcopenia , Humanos , Sarcopenia/metabolismo , Fosfatidilinositol 3-Quinases/metabolismo , Dieta , Mitocôndrias/metabolismo , Complexo de Endopeptidases do Proteassoma/metabolismo , Músculo Esquelético/metabolismo , Envelhecimento/fisiologia
7.
Cancers (Basel) ; 14(23)2022 Nov 26.
Artigo em Inglês | MEDLINE | ID: mdl-36497315

RESUMO

We present here a new, classification-based screening method for anti-cancer botanical combinations. Using this method, we discovered that the combination of Astragalus membranaceus and Vaccaria hispanica (AV) has strong synergic anti-proliferative and killing effects on cancer cells. We showed that AV induces the hyper activation of proliferation and survival pathways (Akt and ERK1/2) and strongly downregulates the cell cycle control proteins p21 and p27. Moreover, FACS analyses revealed that AV induces accumulation of cells in G2/M phase, supported by accumulation of cyclin A. Taken together, our results suggest that AV interferes with the cell cycle in cancer cells, leading to accumulation in G2/M and apoptosis. Further studies are needed to validate the generalizability of the anti-cancer effect of the AV combination, to fully understand its mechanism of action and to evaluate its potential as a new anti-cancer treatment.

8.
World J Microbiol Biotechnol ; 38(8): 138, 2022 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-35701691

RESUMO

Nacobbus celatus sp. n. is one of the main root-knot nematodes in the field destined for horticultural production of the central region of Argentine due to its ability to infect several host plants. The lack of new and safe active ingredients against this nematode has restricted control alternatives for growers. Egg-parasitic fungi and biofumigation with brassicaceae have been considered as potential candidates for the development of bionematicides. Nematicidal effects of Brassica oleracea var. italica (broccoli) and Brassica oleracea var. capitata (cabbage) aqueous extracts (AEs) against second-stage juveniles (J2) of N. celatus were evaluated in vitro. Fisher LSD tests evidenced significant nematicidal (α = 0.05) effects of the two AEs tested, with LD100 of 250 and 500 µL mL-1 for broccoli and cabbage, respectively. Compatibility assays between AEs and five nematophagous fungi were performed on soil extract medium conditioned at 0.99 water activity and incubated at 30, 25 and 20 °C. Purpureocillium lilacinum SR14 was the fungal strain that showed compatibility at levels of spore viability, growth rate and conidia productions at LD50 (125 µL mL-1) and LD25 (60 µL mL-1) of broccoli aqueous extract (BAE) and enhanced the nematophagous effect. Moreover, phytotoxic studies revealed that 125 µL mL-1 of BAE applied at the transplantation time could be safely used without affecting tomato culture. In conclusion, the integrated application of BAE with P. lilacinum SR14, which combines two action mechanisms, represents a promising integrated strategy to management phytoparasitic nematodes.


Assuntos
Brassica , Solanum lycopersicum , Tylenchoidea , Animais , Antinematódeos/farmacologia , Fungos
9.
Pestic Biochem Physiol ; 183: 105082, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35430072

RESUMO

Schinus terebinthifolius, Raddi, has been extensively studied due to its anti-inflammatory and antibiotic properties. S. terebinthifolius was also toxic to some insects, however little has been explored about the nature of its insecticide compounds or the toxicity of this plant to insect species. In this work, we investigate the toxicity of S. terebinthifolius seed flour against the insect C. maculatus. S. terebinthifolius seed flour interfered with the post hatch development of the C. maculatus larvae, decreasing larval survival, mass and length. Using DEAE-cellulose chromatography, five protein fractions were isolated, a non-retained fraction (NRF) and four retained fractions, eluted with 0.25, 0.5, 0.7 and 1.0 M NaCl. Proteins with varying molecular masses were observed in all fractions. The majority protein bands were identified by mass spectrometry analysis and among the main identified proteins are 11S globulins (such glycinin), lipoxygenase, chitinases, 7S globulins (vicilins, canavalin and ß conglycinin), annexin, catalase and sucrose binding protein. All DEAE-protein fractions were toxic to the insect, interfering with the post hatch larval development and survival. Decreases greater than 90% were observed in the larval mass and length at 20 days after oviposition (DAO) for larvae raised on diet containing 0.5% of some fractions. Alterations in the level of proteins, glucose and in the activity of the enzymes lipases and cysteine proteases were also detected in these larvae. Our results show that seeds of S. terebinthifolius have an arsenal of toxic proteins with potential for the control of the insect C. maculatus.


Assuntos
Anacardiaceae , Besouros , Vigna , Gorgulhos , Animais , Feminino , Farinha , Larva , Sementes/química , Gorgulhos/metabolismo
10.
Plants (Basel) ; 10(12)2021 Nov 24.
Artigo em Inglês | MEDLINE | ID: mdl-34961034

RESUMO

Plants produce various compounds as defensive barriers to naturally control fungal diseases. Among them, vascular wilt caused by Fusarium oxysporum is one of the most destructive diseases in crops, causing relevant economic losses. The application of synthetic fungicides is the most used management for this disease. However, this kind of method also involves adverse environmental impacts. Therefore, alternative methods are continuously being developed as a strategy to be involved in integrated pest management programs. Thus, as part of our research on antifungals of plant origin, a group of botanical extracts was assessed for the respective inhibitory effect on mycelium and conidia of F. oxysporum. Mycelial growth inhibition was measured in 12-well plates containing amended semi-solid medium, whereas conidial susceptibility was determined through microdilution. The identification of the bioactive compounds among test extracts was performed using an indirect approach, consisting of the integration of chemical composition and antifungal activity datasets through single-Y orthogonal partial least squares (OPLS) regression. Results showed that Piper aduncum extract was the most potent mycelial growth inhibitor whereas P. elongatum exhibited the best effect on conidia susceptibility. The active compounds identified through statistical integration and subsequent isolation were piperaduncin C, asebogenin and (-)-methyllinderatin. These findings indicated that the integrative, indirect approach is useful for the identification of bioactive metabolites from botanical extracts to be further used as biological protective agents against this phytopathogen.

11.
Saudi J Biol Sci ; 28(7): 3880-3885, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34220243

RESUMO

Housefly is a significant domestic pest, which causes nuisance. The use of insecticides is discouraged to manage housefly; therefore, alternative management strategies are inevitable. The current study investigated the impact of different plant extracts, i.e., Moringa oleifera (moringa), Allium sativum (garlic) and Piper nigrum (black pepper) on biological parameters of house fly. Two different concentrations (i.e., 25 and 50%) of the extracts were blended in larval diet made through mixing of wheat bran, yeast and dried milk powder. The results indicated significant differences for larval duration. Maximum larval duration was recorded for garlic followed by black pepper and moringa, respectively. In case of pupal duration, non-significant differences were observed among plant extracts. Increase rate of oviposition was noticed with moringa at 25% concentration, while decreased oviposition rate was noted for garlic with 50% concentration. Egg hatching percentage remained non-significant for the botanical extracts. The highest survival was observed with moringa, while garlic resulted in the lowest survival. The highest repellency was noticed for garlic followed by black pepper, whereas moringa resulted in the lowest repellency after 30, 60 and 90 min. Prolonged developmental time was observed for bot concentrations of garlic, whereas moringa noted the shortest developmental time. Thus moringa was found to be a promoter of housefly development. Minimum adult emergence was found with both concentrations of garlic followed by 50% concentration of black pepper. The 50% concentration of black pepper promoted the population of adult males, while both concentrations of moringa and 25% concentration of black pepper encouraged the population of female adults. Study outcomes depicted that tested botanical extracts had significant potential for disturbing biological parameters of housefly. The garlic extracts can potentially be used to manage housefly. However, further investigations on the larval and adult mortality are needed.

12.
Molecules ; 26(13)2021 Jun 29.
Artigo em Inglês | MEDLINE | ID: mdl-34210093

RESUMO

The development of plant-based functional food ingredients has become a major focus of the modern food industry as a response to changes in consumer attitudes. In particular, many consumers are switching to a plant-based diet because of their concerns about animal-derived foods on the environment, human health, and animal welfare. There has therefore been great interest in identifying, isolating, and characterizing functional ingredients from botanical sources, especially waste streams from food and agricultural production. However, many of these functional ingredients cannot simply be incorporated into foods because of their poor solubility, stability, or activity characteristics. In this article, we begin by reviewing conventional and emerging methods of extracting plant-based bioactive agents from natural resources including ultrasound-, microwave-, pulsed electric field- and supercritical fluid-based methods. We then provide a brief overview of different methods to characterize these plant-derived ingredients, including conventional, chromatographic, spectroscopic, and mass spectrometry methods. Finally, we discuss the design of plant-based delivery systems to encapsulate, protect, and deliver these functional ingredients, including micelles, liposomes, emulsions, solid lipid nanoparticles, and microgels. The potential benefits of these plant-based delivery systems are highlighted by discussing their use for incorporating functional ingredients into traditional meat products. However, the same technologies could also be employed to introduce functional ingredients into plant-based meat analogs.


Assuntos
Suplementos Nutricionais , Indústria Alimentícia , Alimento Funcional , Produtos da Carne , Nanopartículas/química , Compostos Fitoquímicos/química , Animais , Humanos , Lipossomos
13.
J Ethnopharmacol ; 280: 114444, 2021 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-34302944

RESUMO

ETHNOPHARMACOLOGICAL RELEVANCE: Extracts of the plant Selaginella tamariscina (P.Beauv.) Spring (spike moss) are used for a long time in Asia, for the treatment of multiple diseases and conditions. Aqueous and alcoholic leave extracts are used by local communities. In China, the plant (Juan bai) is listed on the Pharmacopoeia. In South Korea, the use of this plant (Kwon Baek) is mentioned in the book Dongui-Bogam (Heo Jun 1613), at the origin of the Hyungsang medicine. S. tamariscina is traditionally used in Vietnam (mong lung rong), Thailand (dok hin), Philippines (pakong-tulog) and other Asian countries. AIM OF THE STUDY: To provide an analysis of the multiple traditional and current uses of S. tamariscina extracts (STE) in the field of medicine and cosmetic. The review is also intended at identifying the main natural products at the origin of the many pharmacological properties reported with these extracts (anti-inflammatory, antioxidant, antidiabetic, antibacterial, antiallergic, anticancer effects). METHODS: Extensive database retrieval, such as SciFinder and PubMed, was performed by using keywords like " Selaginella tamariscina", "spike moss", "Selaginellaceae ". Relevant textbooks, patents, reviews, and digital documents were consulted to collate all available scientific literature and to provide a complete science-based survey of the topic. RESULTS: Different solvents and methods are used to prepare STE. The process can largely modify the natural product content and properties of the extracts. STE display a range of pharmacological effects, useful to treat metabolic disorders, several inflammatory diseases and various cancers. A specific carbonized extract (S. tamariscina carbonisatus) has shown hemostatic effects, whereas standard STE can promote blood circulation. Many patented STE-containing cosmetic preparations are reviewed here. Several biflavonoids (chiefly amentoflavone) and phenolic compounds (selaginellin derivatives) are primarily responsible for the observed pharmacological properties. Potent inhibitors of protein tyrosine phosphatase 1 B (PTP1B), phosphodiesterase-4 (PDE4), and repressor of pro-inflammatory cytokines expression have been identified from STE. CONCLUSION: The traditional use of STE supports the research performed with this plant. There are robust experimental data, based on in vitro and in vivo models, documenting the use of STE to treat type 2 diabetes, several inflammatory diseases, and some cancers (in combination with standard chemotherapy). Selaginella tamariscina (P.Beauv.) is a prime reservoir for amentoflavone, and many other bioactive natural products. The interest of the plant in medicine and cosmetic is amply justified.


Assuntos
Medicina Tradicional do Leste Asiático/métodos , Extratos Vegetais/farmacologia , Selaginellaceae/química , Animais , Cosméticos/química , Humanos , Solventes/química
14.
J Cosmet Dermatol ; 20(3): 729-737, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32649016

RESUMO

BACKGROUND: The use of sunscreens is mandatory, especially in countries with high ultraviolet (UV) incidence. In consequence, there has been a growing interest in using compounds from natural sources to develop new multifunctional products that protect human skin from the consequences of UV exposition. Even though there are in vitro methods to determine anti-UV efficacy, it is still required to test photoprotection activity on human skin to validate product performance. AIM AND METHODS: In this review, we summarized all reported clinical studies about sun protection factor (SPF) measurements of sunscreens with natural compounds. We also discussed the probable action mechanism of those actives. RESULTS: Herein, we provided an overview on recent studies concerning photoprotection activity of compounds from natural sources, for example, rutin, ferulic acid, caffeine, shea butter, and plant extracts, mainly presented in sunscreen systems with efficacy clinically established by SPF. CONCLUSION: Our review suggested that even when the in vivo SPF evaluation has inherent difficulties, it is essential to assure the real efficacy of sunscreens. Furthermore, the incorporation of natural compounds could enhance the in vivo SPF values of such sunscreens by different mechanisms. Finally, some compounds derived from natural resources with skin benefits could be used as "green"/natural UV filters that provide broad-spectrum sunscreens with further upgrading of the multifunctional dermocosmetic formulation to enhance aesthetics and even skin health.


Assuntos
Fator de Proteção Solar , Protetores Solares , Humanos , Técnicas In Vitro , Pele , Raios Ultravioleta/efeitos adversos
15.
J Adv Res ; 26: 1-13, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-33133679

RESUMO

INTRODUCTION: In recent years, analytical screening methods for simultaneous detection of multivitamins have gained substantial attention to ensure quality and public confidence in dietary supplements. Even so, few analytical methods have been proposed for simultaneous analysis of multivitamin constituents due to the large divergence in chemical characteristics. OBJECTIVES: In the present study, the objective was to develop a simple and rapid direct nano-electrospray ionization-tandem mass spectrometry (DI-nano-ESI-MS/MS) method for targeted detection of water soluble vitamins, fat soluble vitamins, amino acids, royal jelly, ginkgo biloba, and ginseng in a dietary supplement. The applicability of dilute-and-shoot-based DI-nano-ESI-MS/MS to analyze the same tested compounds and their related metabolites in clinical samples was also examined. METHODS: Intact urine mixed with the ionization solvent was loaded (4-µL aliquot) into a nanospray (NS) capillary of 1-µm tip diameter. The NS capillary was then fitted into an off-line ion source at a distance of 5 mm from MS aperture. The sample was directly injected by applying a voltage of 1.1 kV, producing a numerous of m/z peaks for analysis in mere minutes. RESULTS: The DI-nano-ESI-MS/MS method successfully identified almost all dietary supplement components, as well as a plethora of component-related metabolites in clinical samples. In addition, a new merit of the proposed method for the detection of index marker and chemical contaminants as well as subspecies identification was investigated for further quality evaluation of the dietary supplement. CONCLUSIONS: The previous findings illustrated that DI-nano-ESI-MS/MS approach can emerge as a powerful, high throughput, and promising analytical tool for screening and accurate detection of various pharmaceuticals and ingredient in dietary supplements as well as biological fluids.

16.
Nanomaterials (Basel) ; 10(6)2020 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-32492774

RESUMO

Because cold atmospheric pressure plasma (CAPP)-based technologies are very useful tools in nanomaterials synthesis, in this work we have connected two unique in their classes approaches-a CAPP-based protocol and a green synthesis method in order to obtain stable-in-time gold nanoparticles (AuNPs). To do so, we have used an aqueous Gingko biloba leave extract and an aqueous Panax ginseng root extract (untreated or treated by CAPP) to produce AuNPs, suitable for catalytical uses. Firstly, we have adjusted the optical properties of resulted AuNPs, applying UV/Vis absorption spectrophotometry (UV/Vis). To reveal the morphology of Au nanostructures, transmission electron microscopy (TEM) in addition to energy dispersive X-ray scattering (EDX) and selected area X-ray diffraction (SAED) was utilized. Moreover, optical emission spectrometry (OES) in addition to a colorimetric method was used to identify and determine the concentration of selected RONS occurring at the liquid-CAPP interface. Additionally, attenuated total reflectance Fourier transform-infrared spectroscopy (ATR FT-IR) was applied to reveal the active compounds, which might be responsible for the AuNPs surface functionalization and stabilization. Within the performed research it was found that the smallest in size AuNPs were synthesized using the aqueous P. ginseng root extract, which was activated by direct current atmospheric pressure glow discharge (dc-APGD), generated in contact with a flowing liquid cathode (FLC). On the contrary, taking into account the aqueous G. biloba leave extract, the smallest in size AuNPs were synthesized when the untreated by CAPP aqueous G. biloba leave extract was involved in the Au nanostructures synthesis. For catalytical studies we have chosen AuNPs produced using the aqueous P. ginseng root extract activated by FLC-dc-APGD as well as AuNPs synthesized using the aqueous G. biloba leave extract also activated by FLC-dc-APGD. Those NPs were successfully used as homogenous catalysts for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP).

17.
J Diet Suppl ; 17(5): 517-526, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32543253

RESUMO

The passage of the 2018 United States Agriculture Improvement Act removed industrial hemp, defined as Cannabis sativa L. containing less than 0.3% THC content by dry weight, from Schedule I of the Controlled Substances Act and made it an agricultural commodity. Following these changes, the popularity of hemp-derived cannabidiol (CBD) dietary supplements by consumers has greatly exceeded the scientific understanding of purported benefits, safety and composition of these botanical extracts. Further complicating CBD hemp supplement regulation, Food and Drug Administration (FDA) considers CBD to be an approved drug (Epidiolex) in the treatment of severe epilepsy disorders, Dravet and Lennox-Gastaut syndromes. At the same time, hemp-derived CBD supplements can contain a complex phytochemical matrix from the hemp plant, distinguishing the composition of these products from isolated CBD preparations. This work aims to provide clarity on differentiating botanical full-spectrum hemp extracts containing CBD from isolates, from a phytochemical, toxicological and regulatory perspective.


Assuntos
Canabidiol/isolamento & purificação , Cannabis/química , Suplementos Nutricionais/normas , Aprovação de Drogas/legislação & jurisprudência , Extratos Vegetais/isolamento & purificação , Canabinoides/uso terapêutico , Humanos , Estados Unidos , United States Food and Drug Administration
18.
Methods Mol Biol ; 2138: 101-118, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32219742

RESUMO

With the dramatic rise in the global prevalence of obesity and lack of success at addressing this public health issue, there is an urgency to develop new tools with which to study obesity and putative weight-loss products. Pre-adipocyte cell lines have been widely used as a model for adipocyte biology and obesity over the past four decades, but the applicability of results from these cell lines is limited. This chapter will describe an in vivo/ex vivo study design that can be employed to examine the effects of diets and other chronic physiological or pathophysiological conditions on the biology of adipose stem cells (ASCs), as a model for the progression and management of obesity. This type of study design is superior to short-term in vitro experiments in pre-adipocyte cell lines or ASCs, as chronic in vivo conditions cannot be recapitulated in cell culture. Rather, this in vivo/ex vivo study design provides researchers the opportunity to assess the progressive effects of long-term insults or interventions on the reprogramming of ASC behavior. In addition, this model allows us to study the metabolic effects of chronic conditions and therapeutic compounds at a systemic level as well as at the level of adipose tissue and ASCs, in order to provide a whole-body context for the findings.


Assuntos
Adipócitos/efeitos dos fármacos , Tecido Adiposo/efeitos dos fármacos , Doença Crônica/tratamento farmacológico , Preparações Farmacêuticas/administração & dosagem , Células-Tronco/efeitos dos fármacos , Animais , Técnicas de Cultura de Células , Humanos , Modelos Animais , Obesidade/tratamento farmacológico , Ratos Wistar , Projetos de Pesquisa
19.
Food Chem Toxicol ; 138: 111182, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32058013

RESUMO

This paper evaluates use of the Threshold of Toxicological Concern (TTC) approach to assess safety of botanical preparations that may contain potentially genotoxic constituents, based on estimation of the fraction that may be genotoxic. A database of 107 chemical constituents of botanicals was compiled and their potential for genotoxicity evaluated from published data. Forty-three constituents met the criteria for potential genotoxicity. Concentration data on their occurrence in plants provided 2878 data points; the majority were in the low ppm level (range 0.00001-139,965 ppm, by dry weight). Weibull models of the quantitative distribution data were used to calculate 95th percentile values for chemical concentrations, analysing the dataset according to their presence in botanicals (i) as a single chemical, (ii) as two or more chemicals from the same chemical group, or (iii) as two or more chemicals from different chemical groups. The highest 95th percentile concentration value from these analyses was 1.8%. Using the TTC value of 0.15 µg/person per day for potentially genotoxic substances proposed in 2004, this value of 1.8% was used to derive an adjusted TTC value of 10 µg of plant material on a dry weight basis/person per day for assessment of potentially genotoxic substances in botanicals.


Assuntos
Dano ao DNA/efeitos dos fármacos , Compostos Fitoquímicos/toxicidade , Extratos Vegetais/toxicidade , Testes de Toxicidade , Carcinógenos/análise , Carcinógenos/toxicidade , Análise de Dados , Bases de Dados Factuais , Nível de Efeito Adverso não Observado , Compostos Fitoquímicos/análise , Extratos Vegetais/análise , Medição de Risco , Relação Estrutura-Atividade
20.
J Ethnopharmacol ; 246: 112215, 2020 Jan 10.
Artigo em Inglês | MEDLINE | ID: mdl-31491438

RESUMO

ETHNOPHARMACOLOGICAL RELEVANCE: Extracts of the fruit of Prunus mume (Rosaceae) have been used for a long time in Eastern Asia, in many culinary and medicinal preparations. The plant originates from the south of mainland China (named méi) and was introduced later in Japan (ume), Korea (maesil) and Vietnam (mai or mo). Extracts of the fruits (Chinese plum or Japanese apricot, 'Nanko' mume cultivar of Prunus mume Sieb. et Zucc.) are used in traditional Chinese and Japanese medicine, and various Korean medical preparations, for more than 2000 years. The medicinal use of the flesh of the fruits is cited in ancient Japanese monographies (such as Shokokukodenhiho published in 1817). AIM OF THE STUDY: To analyze the anticancer activities of P. mume extracts and their potential use to prevent or treat cancers. The use of P. mume extracts to alleviate the side effects of chemotherapy, notably drug-induced gastro-intestinal toxicities, is also reviewed. METHODS: Extensive database retrieval, such as SciFinder and PubMed, was performed by using keywords such as "Prunus mume", "Chinese plum", "Japanese apricot", and "cancer". In addition, relevant textbooks, patents, reviews, and digital documents (in English) were consulted to collate all available scientific literature and to provide a complete science-based survey of the topic. RESULTS: P. mume extracts display hepatoprotective, anti-inflammatory, antioxidative and antibacterial effects, as well as anticancer properties. A survey of the antitumor activities of MK615 and other P. mume extracts is provided here, with information about the natural products found in the extracts (such as ursolic acid and oleanic acid) and the mechanisms of action of these extracts. MK615 inhibits proliferation and induces apoptotic death of different types of cancer cells from both solid and hematological tumors. CONCLUSION: The pool of in vitro data and signs of anticancer activities in mice models and in Human, although very limited, support the use of this extract to treat cancer, notably gastro-intestinal tumors. However, more robust evidence of anticancer activity in Human are awaited. Beyond cancer treatment, the use of P. mume extracts to prevent or to treat mucositis and other gastro-intestinal damages induced by anticancer drugs is underlined. The woody plant Prunus mume, a member of the Rosaceae family, has a long plantation history in China, and has widely been planted in Asia due to its high ornamental value (colorful corollas, pleasant fragrance, weeping trait) and the culinary, nutritional and medicinal potential of the fruits from the specie Prunus mume Sieb. et Zucc (Mei). Over the past 20 years the therapeutic potential of the extract of Japanese apricot "Ume" has been regularly reported. Anti-bacterial, anti-oxidative, anti-inflammatory and anti-cancer properties have been described. A complete analysis of the published scientific literature on Ume and cancer is presented here.


Assuntos
Antineoplásicos Fitogênicos/farmacologia , Extratos Vegetais/farmacologia , Prunus/química , Antineoplásicos Fitogênicos/química , Linhagem Celular Tumoral , Sobrevivência Celular/efeitos dos fármacos , Frutas/química , Humanos , Estrutura Molecular , Extratos Vegetais/química
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