Tropaeolum majus L. and low dose gamma radiation suppress liver carcinoma development via EGFR-HER2 signaling pathway.

Hepatocellular carcinoma (HCC) is one of the most fatal cancers around the world and remain asymptomatic in early stage. An alcoholic extract prepared from leaves of Tropaeolum majus L. (Tropaeolaceae) was assessed for its potential activity against diethylnitrosamine-induced liver carcinoma in vivo. Oral administration of the extract significantly decreased the inflammatory marker translation NF-kB and supressed HCC progression in combination with 0.5 Gy gamma radiation via EGF-HER-2 pathway. Histopathological and immunohistopathological features also showed the recovery of a hepatic architecture. Immunohistochemical study showed the T. majus and LDR enhancement effect on proapoptotic markers (caspase-3 and Bax) and inhibition of anti-apoptotic factor (BCl2). HPLC-DAD-MSn analysis of the extract revealed the annotation of twelve compounds. T. majus could mediate a defensive influence against diethylnitrosamine-induced hepatocarcinogenesis and serve as a respectable option in amelioration of the hepatocellular carcinoma development in combination with low dose of gamma radiation.

Formation and stability of isothiocyanate protein conjugates at different pH values and bread types enriched with nasturtium (Tropaeolum majus L.).

Brassicaceae vegetables are rich in glucosinolates (GLS), which degrade into various breakdown products, including isothiocyanates (ITC), during food processing. ITC are associated with health-promoting properties; therefore, producing food products enriched with a high content of these compounds is of interest for improving and maintaining human health. The present study aimed at evaluating a potential increase in ITC formation in Brassicaceae-enriched bread while minimizing ITC-protein conjugates. The influence of pH on GLS degradation was evaluated in different bread types and pH-adjusted model breads. In all samples, ITC, nitriles, and ITC-amino acid conjugates were analyzed by GC-MS and LC-ESI-MS/MS, respectively. The highest ITC-Lys levels with 33.9 µmol BITC-Lys/g bread could be found in a (more alkaline soda) bread with a pH of 7.2, while "free" BITC content was the lowest. However, this finding could not be directly correlated to pH value, because in model breads no significant relation between the pH and the BITC content could be identified. Especially the baking process impacted the ITC content as it was reduced from dough to the bread by 98%. Therefore, a heated food product is not suitable for an enrichment with GLS-rich vegetables to achieve a high content on BITC. Nevertheless, in the bread matrix itself the degradation products and BITC-Lys conjugates were stable during storage.

High throughput analytical approach based on µQuEChERS combined with UHPLC-PDA for analysis of bioactive secondary metabolites in edible flowers.

Mallow blue (Malva sylvestris L.), hibiscus (Hibiscus rosa-sinensis L.) and nasturtium (Tropaeolum majus L.), are common edible flowers rich in bioactive secondary metabolites (BASMs) whose use in sophisticated gastronomy present currently as increasing trend. In this study the BASMs profile of these edible flowers was established using an emerging green extraction technique, µQuEChERS followed by ultra-high performance liquid chromatography coupled to a photodiode array detection system (UHPLC-PDA). After validation the µQuEChERS/UHPLC-PDA methodology allow to identify that apigenin and epigallocatechin gallate are the most abundant BASMs in mallow blue flowers, while catechin and dicaffeoylquinic acid are predominant in hibiscus flowers, and myricitrin and dicaffeoylquinic acid in nasturtium flowers. Total polyphenol content is the highest in the extract of hibiscus. Nasturtium shows the greatest radical scavenging activity. The results revealed that these flowers constitute a potential source of BASMs with different bioactive properties suggesting its use in design of new functional foods.

Centranthus ruber (L.) DC. and Tropaeolum majus L.: Phytochemical Profile, In Vitro Anti-Denaturation Effects and Lipase Inhibitory Activity of Two Ornamental Plants Traditionally Used as Herbal Remedies.

Ornamental plants often gain relevance not only for their decorative use, but also as a source of phytochemicals with interesting healing properties. Herein, spontaneous Centranthus ruber (L.) DC. and Tropaeolum majus L., mainly used as ornamental species but also traditionally consumed and used in popular medicine, were investigated. The aerial parts were extracted with methanol trough maceration, and resultant crude extracts were partitioned using solvents with increasing polarity. As previous studies mostly dealt with the phenolic content of these species, the phytochemical investigation mainly focused on nonpolar constituents, detected with GC-MS. The total phenolic and flavonoid content was also verified, and HPTLC analyses were performed. In order to explore the potential antiarthritic and anti-obesity properties, extracts and their fractions were evaluated for their anti-denaturation effects, with the use of the BSA assay, and for their ability to inhibit pancreatic lipase. The antioxidant properties and the inhibitory activity on the NO production were verified, as well. Almost all the extracts and fractions demonstrated good inhibitory effects on NO production. The n-hexane and dichloromethane fractions from T. majus, as well as the n-hexane fraction from C. ruber, were effective in protecting the protein from heat-induced denaturation (IC50 = 154.0 ± 1.9, 270.8 ± 2.3 and 450.1 ± 15.5 µg/mL, respectively). The dichloromethane fractions from both raw extracts were also effective in inhibiting pancreatic lipase, with IC50 values equal to 2.23 ± 0.02 mg/mL (for C. ruber sample), and 2.05 ± 0.02 mg/mL (T. majus). Obtained results support the traditional use of these species for their beneficial health properties and suggest that investigated plant species could be potential sources of novel antiarthritic and anti-obesity agents.

Anti-glycative and anti-inflammatory effects of macamides isolated from Tropaeolum tuberosum in skin cells.

Tropaeolum tuberosum, commonly known as Mashua, is an herbal remedy used on the skin in order to treat local pain and to heal wounds. This study aimed to evaluate the extracts and isolated compounds from T. tuberosum with anti-glycative and anti-inflammatory activities. Guided isolation by bioassay led to the isolation and characterisation by NMR and MS of (S)-(-)-N-(α-methylbenzyl)-oleamide (1) and (S)-(-)-N-(α-methylbenzyl)-linoleamide (2). Both compounds inhibited the production of TNF-α with IC50 values of 9.38 µM (NIH/3T3 cells) and 10.06 µM (PA317 cells) for compound 1, and 5.3 µM (NIH/3T3 cells) and 6.48 µM (PA317 cells) for compound 2. Compounds 1 and 2 showed the inhibitory effect on the BSA-MGO formation at concentrations of 9.38 µM (3.39%) and 5.30 µM (8.53%), respectively. Moreover, both compounds showed significant breaking properties on the MGO-AGE-protein crosslink with percent modification of 6.58% (9.38 µM) and 18.08% (5.30 µM), respectively.

Antioxidant and antiproliferative potential of ethanolic extracts from Moringa oleifera, Tropaeolum tuberosum and Annona cherimola in colorrectal cancer cells.

Moringa oleifera, Tropaeolum tuberosum and Annona cherimola are medicinal plants traditionally used in Ecuador. However, their therapeutic properties are not completely known. We analyzed chromatographically ethanolic extracts of the seeds of M. oleifera, A. cherimola and the tubers of T. tuberosum; all presented a high content of polyphenols. The extract of A. cherimola showed the highest antioxidant activity and M. oleifera had the highest capacity to enhance the activity of detoxifying enzymes such as glutathione S-transferase and quinone oxidoreductase. The antitumor effect of these extracts was evaluated in vitro with colorectal cancer (CRC) cell lines T84, HCT-15, SW480 and HT-29, as well as with cancer stem cells (CSCs). A. cherimola and M. oleifera extracts presented the lowest IC50 in T-84 and HCT-15 (resistant) cells, respectively, as well as the highest level of inhibition of proliferation in multicellular tumor spheroids of HCT-15 cells. The inhibitory effect on CSCs is noteworthy because in vivo, these cells are often responsible for cancer recurrences and resistance to chemotherapy. Moreover, all extracts showed a synergistic activity with 5-Fu. The antiproliferative mechanism of the extracts was related to overexpression of caspases 9, 8 and 3 and increased production of reactive oxygen species. In addition, we observed cell death by autophagy in M. oleifera and T. tuberosum extracts. Therefore, these ethanolic extracts are excellent candidates for future molecular analysis of the presence of bioactive compounds and in vivo studies which could improve colon cancer therapy.

A Phytocomplex Consisting of Tropaeolum majus L. and Salvia officinalis L. Extracts Alleviates the Inflammatory Response of Dermal Fibroblasts to Bacterial Lipopolysaccharides.

BACKGROUND: The antimicrobial activity and effects of a phytocomplex consisting of Tropaeolum flos (T) and Salviae folium (S) extracts on the cytokine levels and transcription factors on dermal fibroblast BJ exposed to bacterial lipopolysaccharides were examined. METHODS: In order to select the most optimal combination ratio of the two extracts for using in vitro, the physicochemical characterization of vegetal extract mixtures was performed and the antioxidant and antibacterial activities were evaluated on five different formulations of T : S, namely, 1 : 1, 1 : 2, 2 : 1, 3 : 1, and 1 : 3. The best combination of bioactive compounds with regard to antioxidant and antibacterial activities (T : S 1 : 2) was selected for in vitro evaluation of the anti-inflammatory effect. Human dermal fibroblast BJ cells were treated with two doses of the extract mixture and then exposed to bacterial lipopolysaccharides (LPS). The levels of the cytokines involved in inflammatory response, namely, interleukin- (IL-) 6, tumor necrosis factor- (TNF-) α, IL-31, and IL-33, were quantified by ELISA, and the expression of transcription factors, namely, signal transducer and activator of transcription (STAT) 3, nuclear factor kappa B (NFκB), and phosphorylated NFκB (pNFκB), were evaluated by western blot analysis. RESULTS: The results have shown that the mixture of T : S 1 : 2 exhibited significant antibacterial effects on Staphylococcus aureus ATCC 25923. LPS exposure increased the cytokine levels in BJ cells and enhanced the NFκB expression. The pretreatment of BF cells exposed to LPS with the two doses of the extract mixture markedly inhibited the increase of IL-33 and TNF-α levels and amplified the NFκB expression and its activation, especially with the high dose. The low doses of the extract reduced NFκB expression but increased its activation. CONCLUSIONS: These experimental findings suggest that the mixture of T : S 1 : 2 can exert some protection against bacterial infections and inflammation induced by LPS in BJ cells being a good therapeutic option in related conditions associated with inflammation.

Local/traditional uses, secondary metabolites and biological activities of Mashua (Tropaeolum tuberosum Ruíz & Pavón).

ETHNOPHARMACOLOGICAL RELEVANCE: Tropaeolum tuberosum Ruíz & Pavón (Tropaeolaceae). Sim (commonly called Mashua) is an indigenous plant that has medicinal values for various ethnic groups of the regions of the Andes mountain range of South America, which use it for the treatment of diseases venereal, lung and skin; for the healing of internal and external wounds; and as an analgesic for kidney and bladder pain. AIM OF THE REVIEW: We critically summarised the current evidence on the botanic characterisation and distribution, ethnopharmacology, secondary metabolites, pharmacological activities, qualitative and quantitative analysis, and toxicology of T. tuberosum. MATERIALS AND METHODS: The relevant information on T. tuberosum was gathered from worldwide accepted scientific databases via electronic search (Google scholar, Elsevier, SciFinder, ScienceDirect, PubMed, SpringerLink, Web of Science, Scopus, Wiley Online, Mendeley, Scielo and Dialnet electronic databases). Information was also obtained from the literature and books as well as PhD and MSc dissertations. Plant names were validated by 'The Plant List' (www.theplantlist.org). RESULTS: T. tuberosum has diverse uses in local and popular medicine, specifically for relieving pain and infections in humans. Regarding its biological activities, polar extracts (aqueous, hydroalcoholic) and isolated compounds from the tubers have exhibited a wide range of in vitro and in vivo pharmacological effects, including antibacterial, antioxidant, anti-inflammatory activities. Quantitative analysis (e.g., NMR, HPLC, GC-MS) indicated the presence of a set of secondary metabolites, including hydroxybenzoic acids, tannins, flavanols, anthocyanins, glucosinolates, isothiocyanates, phytosterols, fatty acids and alkamides in the tubers of T. tuberosum. Likewise, glucosinolates have been identified in the seeds and isothiocyanates have been detected in leaves, flowers and seeds. CONCLUSIONS: T. tuberosum has been tested for various biological activities and the extracts (tubers in particular) demonstrated a promising potential as an antibacterial, antioxidant, anti-inflammatory and inhibitors of benign prostatic hyperplasia. A lack of alignment between the ethno-medicinal uses and existing biological screenings was observed, indicating the need to explore its potential for the treatment against respiratory affections, urinary affections and blood diseases. Likewise, it is necessary to analyse deeply the relationship that exists between the different tuber colours of T. tuberosum and its use for the treatment of certain diseases. Validation of clinical studies of the antibacterial, antioxidant/anti-inflammatory, anti-spermatogenic activities and as inhibitors of benign prostatic hyperplasia is required. Moreover, studies on the toxicity, bioavailability, and pharmacokinetics, in addition to clinical trials, are indispensable for assessing the safety and efficacy of the active metabolites or extracts obtained from T. tuberosum. Other areas that need investigation are the development of future applications based on their active metabolites, such as neurodegenerative diseases (Alzheimer's disease, Parkinson's disease, Huntington's disease). Finally, the work purposes to motivate other research groups to carry out a series of scientific studies that can fill the gaps that exist with respect to Mashua properties, and thus be able to change the focus of T. tuberosum (Mashua) that currently has in the consumer society.

Morphological, technological and nutritional properties of flours and starches from mashua (Tropaeolum tuberosum) and melloco (Ullucus tuberosus) cultivated in Ecuador.

Morphological, technological and nutritional analyses were done in two scarcely studied starches from Andean tubers (mashua and melloco). The low sedimentation values, and the high zeta potential of mashua and melloco starches in cold dispersions, as consequence of their electronegativity, indicated a better behaviour as stabilizer than potato starch. During heating, mashua and melloco starches presented much higher viscosity than potato starch, associated with their higher average particle size and greater amylose content. DSC and TGA analyses indicated that melloco starch had the highest gelatinization enthalpy ΔHgel (12.32 J g-1) and degradation temperature (270 °C), in comparison with potato starch, which are indicators of a better thermal resistance. Consequently, extracted mashua and melloco starches could be excellent and cost-effective thickening or gelling agents in both foods and a wide range of biomaterials. Mashua and melloco starches exhibited a digestion rate close to 80%, which agreed with the low resistant starch content.

Características físico-químicas dos tubérculos da Tropaeolum pentaphyllum Lam / Physico-chemical characteristics of tubers of Tropaeolum pentaphyllum Lam

A Tropaeolum pentaphyllum Lam é uma Planta Alimentícia Não Convencional (PANC) nativa do Brasil, que está em crescente estudo. O objetivo deste trabalho foi avaliar a composição físico-química, o pH e cor da polpa da batata. Observou-se que a umidade (79,32 %), proteína (2,33%) e cinzas (0,93%), apresentaram-se semelhantes à T. pentaphyllum Lam avaliadas em outros estudos. Já os teores de carboidratos (13,02%), valor energético (82,19%) e lipídeos (3,82%) apresentaram-se superiores e de fibras (1,78%) inferiores a vegetais da mesma espécie. Além disso, a planta mostrou-se ácida, luminosa e com coloração tendendo ao vermelho e ao amarelo. Assim, percebe-se que a batata pode ser considerada um complemento alimentar pela sua composição nutricional e que é necessário a realização de mais estudos, a fim de aprimorar o conhecimento sobre a mesma.

Alkamides from Tropaeolum tuberosum inhibit inflammatory response induced by TNF-α and NF-κB.

ETHNO-PHARMACOLOGICAL RELEVANCE: Tropaeolum tuberosum, commonly known as "Mashua", is one of the plants most frequently used by Andean (Peruvian-Bolivian) people as food and medicine. It is used as a remedy against a wide range of diseases, especially those related with inflammation. OBJECTIVES: This study aims to identify compounds active against inflammatory related conditions. MATERIALS AND METHODS: A bioassay-guided isolation of anti-inflammatory compounds from black and purple tubers of T. tuberosum was performed measuring TNF-α and NF-κB production in THP-1 monocytic cells. RESULTS: The bioassay-guided isolation led to one active compound from purple T. tuberosum, N-oleoyldopamine (1), and another active compound from black T. tuberosum, N-(2-Hydroxyethyl)-7Z,10Z,13Z,16Z-docosatetraenamide (2). Both compounds displayed anti-TNF-α activity with IC50 values of 3.12 ±â€¯0.19 µM and 1.56 ±â€¯0.15 µM, respectively. Also, both compounds suppressed NF-κB with IC50 of 3.54 ±â€¯0.02 µM and 1.77 ±â€¯0.07 µM, respectively. CONCLUSIONS: We identified bioactive compounds from purple and black Tropaeolum tuberosum responsible for their anti-inflammatory activity: N-oleoyldopamine (1) and N-(2-Hydroxyethyl)-7Z,10Z,13Z,16Z-docosatetraenamide (2). This is the first report which isolates these compounds from T. tuberosum and describes their anti-inflammatory activities.

Rapid biosynthesis and characterization of silver nanoparticles from the leaf extract of Tropaeolum majus L. and its enhanced in-vitro antibacterial, antifungal, antioxidant and anticancer properties.

Eco-friendly biosynthesis of nanoparticles from medicinal plants as reducing agent has gained importance due to its potential therapeutic uses. In the present study Silver nanoparticles (AgNPs) were eco-friendly synthesized using the leaf extracts of the medicinal plant Tropaeolum majus. The obtained AgNPs were characterized by UV - visible spectrum, FTIR, SEM and XRD which clearly showed the reduction of Ag+ ions to Ag0. In addition, the aqueous and ethanolic extracts were analyzed for phytochemicals and its antioxidant activities. GC-MS spectrum showed the presence of 25 compounds with benzeneacetic acid as the dominant contents. The synthesized AgNPs revealed maximum absorption spectrum at 463 nm and FTIR vibrational peaks at 3357.46, 21,966.52, 2118.42, 1637.27, 658.571 and 411.728 cm-1 respectively. SEM and XRD studies evidenced the nature of nanocrystalline with face centered cubic (fcc) crystal structure. Both AgNPs and plant extracts showed more inhibition activity against Pseudomonas aeroginosa compared to other bacteria with MIC value of 6.25 µg/ml. Antifungal activities was higher for Penicilium notatum with MIC value 31.2 µg/ml. The IC50 values for MCF7 for aqueous extract were found to be 4.68 µg/ml, ethanol extract 7.5 µg/ml, AgNPs 2.49 µg/ml, and doxorubicin 1.4 µg/ml. The IC50 values for VERO cell line for aqueous extract was 8.1 µg/ml, ethanol extract with 6.8 µg/ml, silver nanoparticles 5.3 µg/ml and doxorubicin 2.6 µg/ml respectively. Conclusively, the antibacterial, antifungal, antioxidant and anticancer properties of the synthesized AgNPs from Tropaeolum majus act as major therapeutic drug for microbial infectious disease and other health associated disorders.

Garden nasturtium (Tropaeolum majus L.) - a source of mineral elements and bioactive compounds

The garden nasturtium (Tropaeolum majus L.) belongs to the family Tropaeolaceae. Native to South America it was brought to Europe in XVI century. It is a plant with numerous healing properties. Medicinal plants such as the garden nasturtium contain trace elements and bioactive compounds which can be easily absorbed by the human body. The flowers and other parts of the garden nasturtium are a good source of micro elements such as potassium, phosphorus, calcium and magnesium, and macro elements, especially of zinc, copper and iron. The essential oil, the extract from the flowers and leaves, and the compounds isolated from these elements have antimicrobial, antifungal, hypotensive, expectorant and anticancer effects. Antioxidant activity of extracts from garden nasturtium is an effect of its high content of compounds such as anthocyanins, polyphenols and vitamin C. Due to its rich phytochemical content and unique elemental composition, the garden nasturtium may be used in the treatment of many diseases for example the illnesses of the respiratory and digestive systems. High content of erucic acid in nasturtium seeds makes it possible to use its oil as treatment in adrenoleukodystrophy. It is also applied in dermatology because it improves the condition of skin and hair. More recently, the flowers of this species have been used as a decorative and edible element of some types of dishes. Aim of the review was to summarize available data concerning garden nasturtium Tropaeolum majus L.

Nutritional Evaluation of Non-Conventional Vegetables in Brazil.

The objective of this study was to characterize the nutritional compounds of interest present in vegetables known as non-conventional, in Brazil. The following evaluations were carried out: antioxidant activity, phenolic compounds, vitamin C, calories, carbohydrates, humidity, lipids, proteins, fiber, acidity and quantification of minerals (P, K, Ca, Mg, S, Cu, Fe, Mn, Zn and B). The species studied were Amaranthus hybridus L., Amaranthus viridis L., Basella alba L., Eryngium campestre L., Hibiscus sabdariffa L., Lactuca canadensis L., Rumex acetosa L., Stachys byzantina K. Koch, Tropaeolum majus L. and Xanthosoma sagittifolium L. Representative samples of plant structures of interest were harvested from each species suitable for human consumption such as leaves, flowers and flower buds. The results were submitted to multivariate analysis - principal components analysis (PCA). All the species present nutritional compounds of interest in different levels among the evaluated structures.

Safety Assessment and Botanical Standardization of an Edible Species from South America.

Tropaeolum majus L. (Tropaeolaceae), commonly known as nasturtium, is an important edible plant native to the Andean States and widely disseminated throughout South America. Despite the use of this species is quite widespread, there are no minimum quality control standards or data on its genotoxicity. So, the aim of this study was to present a detailed anatomical and histochemical study for Tropaeolum majus and provide genotoxicity parameters of a preparation routinely used in South American countries. First, three different Tropaeolum majus aqueous extracts (TMAEs) at concentrations of 1.5%, 7%, and 15% were prepared according to the popular use. Then, genetic toxicity of TMAE was evaluated on bacterial reverse mutation, genomic lesions, and micronucleus formation in male rats. Furthermore, a detailed anatomical and histochemical study of the leaves and stems of Tropaeolum majus were performed. No revertant colonies were found in any bacterial cultures examined. In the comet assay, TMAE showed no significant DNA damage in all tested doses. Micronucleus assay showed no significant increases in the frequency of inducing micronuclei in any dose examined. Light and electron microscope images of cross-section of leaves and stems from Tropaeolum majus revealed useful diagnostic features. The presented data showed significant safety parameters for the use of TMAE and provided important data for the quality control of this plant species.

Fetopathies associated with exposure to angiotensin converting enzyme inhibitor from Tropaeolum majus L.

The prevalence of the use of herbal medicines is on the rise across the world, especially amongst pregnant women. A fact that draws attention is that many species commonly used by pregnant women, including the Tropaeolum majus L. (Tropaeolaceae), also present inhibitory activity on the angiotensin-converting enzyme (ACE). Herein, we have investigated the effects of T. majus extract (HETM) on fetal development, evaluating its relationship with possible ACE inhibitory activity. Pregnant Wistar rats were treated with different HETM doses (3, 30 and 300 mg/kg/day) from gestational days 8-20. Rats were sacrificed on the day 20 of pregnancy and the following parameters were evaluated: clinical symptoms of maternal toxicity; maternal body weight; feed and water intake; maternal liver, kidney, and ovary weights, maternal ACE activity and aldosterone levels, live fetuses mean; dead fetuses percentage, fetus weight, and fetal malformation. All pregnant rats treated with high HETM doses showed significant reduction in plasma ACE activity accompanied by a decrease in serum aldosterone levels. Moreover, significant changes in fetal development were observed, including growth retardation and renal damage after 20 days of gestation. Thus, data presented demonstrate the significant effects of the use of HETM on fetal development during pregnancy.

Benzylglucosinolate Derived Isothiocyanate from Tropaeolum majus Reduces Gluconeogenic Gene and Protein Expression in Human Cells.

Nasturtium (Tropaeolum majus L.) contains high concentrations of benzylglcosinolate. We found that a hydrolysis product of benzyl glucosinolate-the benzyl isothiocyanate (BITC)-modulates the intracellular localization of the transcription factor Forkhead box O 1 (FOXO1). FoxO transcription factors can antagonize insulin effects and trigger a variety of cellular processes involved in tumor suppression, longevity, development and metabolism. The current study evaluated the ability of BITC-extracted as intact glucosinolate from nasturtium and hydrolyzed with myrosinase-to modulate i) the insulin-signaling pathway, ii) the intracellular localization of FOXO1 and, iii) the expression of proteins involved in gluconeogenesis, antioxidant response and detoxification. Stably transfected human osteosarcoma cells (U-2 OS) with constitutive expression of FOXO1 protein labeled with GFP (green fluorescent protein) were used to evaluate the effect of BITC on FOXO1. Human hepatoma HepG2 cell cultures were selected to evaluate the effect on gluconeogenic, antioxidant and detoxification genes and protein expression. BITC reduced the phosphorylation of protein kinase B (AKT/PKB) and FOXO1; promoted FOXO1 translocation from cytoplasm into the nucleus antagonizing the insulin effect; was able to down-regulate the gene and protein expression of gluconeogenic enzymes; and induced the gene expression of antioxidant and detoxification enzymes. Knockdown analyses with specific siRNAs showed that the expression of gluconeogenic genes was dependent on nuclear factor (erythroid derived)-like2 (NRF2) and independent of FOXO1, AKT and NAD-dependent deacetylase sirtuin-1 (SIRT1). The current study provides evidence that BITC might have a role in type 2 diabetes T2D by reducing hepatic glucose production and increasing antioxidant resistance.

Traditional usages, botany, phytochemistry, biological activity and toxicology of tropaeolum majus L: a review / Usos tradicionales, botánica, fitoquímica, actividad biológica y toxicología de tropaeolum majus L: una revisión

Tropaeolum majus presents medicinal, nutritional and ornamental value. Plant extracts and fractions have been found to exhibit diuretic, antihypertensive, anti-inflammatory, antimicrobial and antioxidant activities. Moreover, protective effects on blood and liver, scurvy’s treatment, antithrombin activity and prevention against macular degeneration have also been observed. T. majus contains biologically active compounds such as flavonoids, glucosilonates, fatty acids, essential oil, chlorogenic acid, aminoacids, cucurbitacins, proteins and carotenoids. Acute and subchronic studies demonstrated a lack of toxic effects, but the extracts of this plant can have deleterious consequences during the pregnancy. The revised databases were SciELO, PubMed, ScienceDirect and Portal da Capes, considering studies between 1963 and 2014 and by searching for terms like Tropaeolum majus, Tropaeolaceae, Tropaeolum majus constituents, Tropaeolum majus use and Tropaeolum majus toxicity.

Tropaeolum majus presenta valor medicinal, alimenticio y ornamental. A partir del extracto y las fracciones de la planta se han encontrado actividades biológicas, que incluyen efecto diurético, antihipertensivo, anti-inflamatorio, antimicrobiano y antioxidante. Además, efectos protectores sobre la sangre y el hígado, tratamiento del escorbuto, actividad antitrombina y prevención contra la degeneración macular. T. majus contiene compuestos biológicamente activos como flavonoides, glucosilonates, ácidos grasos, aceite esencial, ácido clorogénico, aminoácidos, cucurbitacinas, proteínas y carotenoides. Estudios de toxicidad aguda y subcrónica demostraron una falta de efectos toxicológicos, pero los extractos de esta planta pueden tener consecuencias perjudiciales durante el embarazo. Las bases de datos revisadas fueron SciELO, PubMed, ScienceDirect y Portal da Capes, teniendo en cuenta los estudios entre 1963 y 2014 y mediante la búsqueda de términos como Tropaeolum majus, Tropaeolaceae, Tropaeolum majus constituyentes, Tropaeolum majus usos y Tropaeolum majus toxicidad.

Nasturtium (Indian cress, Tropaeolum majus nanum) dually blocks the COX and LOX pathway in primary human immune cells.

BACKGROUND: Nasturtium (Indian cress, Tropaeolum majus) is known for its pharmacological value in the treatment of bacterial infections of the upper air tract and urinary bladder. However, scientific data on the anti-inflammatory potency in human-derived cells is missing. PURPOSE: The aim of this study was to investigate the potential of nasturtium to inhibit the lipopolysaccharide (LPS) induced inflammatory response in primary human cells of the immune system. STUDY DESIGN: The anti-inflammatory activities of nasturtium and its fractions were evaluated via regulation of arachidonic acid (AA) pathway and MAPK kinase cascade. Fraction H4 which was responsible for the anti-inflammatory effects was further characterized. METHODS: Human peripheral blood mononuclear cells (PBMC) were either treated with plant extracts or fractions thereof, stimulated with LPS and/or N-formyl-methionyl-leucyl-phenylalanine (fMLP) and analysed for COX and LOX, release of prostaglandin PGE2, leukotriene LTB4, TNF-alpha and ERK signaling pathway activation. The plant extracts were separated into four fractions by HPLC; fraction H4 was subjected to UHPLC-ToF/MS analysis to identify potential bioactive compounds. RESULTS: We found that aqueous extracts of nasturtium did exert strong concentration dependent suppression of LPS-triggered TNF-alpha release and COX pathway signaling, including PGE2 synthesis. Whereas COX-1 protein expression was not impacted, LPS-triggered COX-2 protein expression was concentration dependently blocked by the plant extract but not COX-2 enzyme activity. These findings suggest a mechanism of action for the plant extract which is different from non-steroidal anti-inflammatory drugs (NSAIDs). Moreover, the plant extract blocked leukotriene LTB4 release, the major end product of the 5-LOX pathway from PBMC. Down-regulation of ERK1/2 and c-Jun activation preceded COX-2 suppression upon plant extract treatment in the presence of LPS. Using HPLC separation of the aqueous extract followed by metabolomic analysis we could limit the number of relevant bioactive compounds in the extract to about 50. CONCLUSIONS: This study provides a rationale for the anti-inflammatory efficacy of nasturtium observed in man and gives first insight into the underlying molecular mechanisms.

Antimicrobial Activity and Chromatographic Analysis of Extracts from Tropaeolum pentaphyllum Lam. Tubers.

BACKGROUND: Tropaeolum pentaphyllum Lam. tubers (Tropaeolaceae) are known and used as a condiment and for the treatment of skin infections in Southern Brazil. However, its activity and composition has not yet been investigated. Thus, different extracts and the essential oil from the tubers were tested against a range of microorganisms. The most active extracts were submitted to chromatographic analysis. METHODS: Hydroalcoholic extract (70%), fractions of it, and the essential oil from the tubers were tested against several bacteria, yeasts and molds, furnishing the corresponding inhibitory, bactericidal and fungicidal minimal concentration values. The most active extracts were submitted to GC-MS investigation. RESULTS: The strongest effects against different strains of microorganisms, such as Gram-positive and negative bacteria, Candida spp. and dermatophytes were observed for the essential oil and the chloroform fraction, with minimal inhibitory concentrations (MICs) well below 200 µg/mL. GC-MS analysis revealed that the major essential oil constituent is benzyl isothiocyanate (BITC), while the chloroform fraction is constituted of BITC, amides, sulfur, fatty acids and its esters, all compounds that may be related to the demonstrated activity. CONCLUSIONS: Overall, the results support the popular use of the plant for the treatment of skin infections, and revealed the main active compounds.