RESUMEN
This report drives insights for the investigation of the underlying mechanisms of antitumor effects of Teucrium ramosissimum (TrS) essential oil (EO) that elicits colon tumor protection via activation of cell death machinery. A study of the aerial part phytocomplex was performed by FTIR spectra and GC/MS. In vivo colon carcinogenesis induced by LPS was carried out using mouse model. HCT-116 cells were coincubated with TrS EO and TRAIL-resistant cancer cells, and then cell lysates were assessed using Western blotting technique for death and decoy receptor expression. TrS essential oil potentiates TRAIL-mediated apoptosis cell death of HCT-116 as detected by PARP cleavage and caspase activation. Further data suggest that TrS up-regulates DR 5/4 expression, and down-regulates DcRs expression. Additionally, TrS potentiates apoptosis in TRAIL-resistant tumor cells through induction of MAPK signalling components, including ERK, p38 kinase, JNK, and activation of CHOP, and SP1, involved in DR5 expression. Moreover, Teucrium EO phytoconstituents mediate HCT-116 cells apoptosis by evoking cell cycle arrest at the G1 and G2/M phase through diminishing the expression of cyclin D1 acting as a potent multitargeted factors of inhibition of JAK/STAT oncogenic signaling pathway. These results demonstrate that TRAIL-induced apoptosis enhancing effect of TrS mediated through proto-oncogene expression in HCT-116. TrS administered intragastrically is able to prevent tumor of colon by stopping carcinogenesis process and impede tumor cell growth in in vivo analysis promoted by LPS. On the whole, our results revealed that TrS is an effective antitcancer agent through the induction of transcription factor and kinases, either are needed to trigger Apo2L receptors.
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Apoptosis , Neoplasias Colorrectales , Aceites Volátiles , Ligando Inductor de Apoptosis Relacionado con TNF , Teucrium , Humanos , Animales , Aceites Volátiles/farmacología , Aceites Volátiles/uso terapéutico , Células HCT116 , Ligando Inductor de Apoptosis Relacionado con TNF/metabolismo , Neoplasias Colorrectales/tratamiento farmacológico , Ratones , Apoptosis/efectos de los fármacos , Teucrium/química , Proto-Oncogenes Mas , Ratones Endogámicos BALB C , Receptores del Ligando Inductor de Apoptosis Relacionado con TNF/metabolismo , Receptores del Ligando Inductor de Apoptosis Relacionado con TNF/genética , Masculino , Antineoplásicos Fitogénicos/farmacología , Antineoplásicos Fitogénicos/uso terapéutico , LipopolisacáridosRESUMEN
The current study aimed to assess the antioxidant and antiproliferative effects of teucrium polium extract: computational and in vivo study in rats. Three groups of animals: Group (i) constitute the control group; Group (ii) HeLa group received an intrafemoral inoculation of HeLa cells and Group (iii) constitue the combination between HeLa + T. polium. The plant was administered by gavage. Our results revealed that HeLa cell injection showed an elevation in aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), total bilirubin (TB), creatinine, urea, calcium and phosphorus. The pretreatment with the plant extract reduced the level of these parameters. Injection of HeLa cells showed a significant decrease in phosphorus and calcium respectively. However, the pretreatment by T. polium modulated the level of these two minerals. Rats treated with HeLa cells line showed an increase in the level of lipid peroxidation as evaluated by the TBARS substances, at the same time, a significant decreases in SOD, CAT and GPx activities were noted in the HeLa group compared to the control. On the other hand, pretreatment with the plant improved the level of these enzymes. Our results revealed that T.polium has a therapeutic effect on some health problems. HeLa cell line induced a small infiltration in liver and kidney. T. polium reduced the damage in both liver and kidney, but did not reveal any proliferation of tumor cells from trabecular bone tissue. The computational study revealed that T. polium compound bound with high free binding energies and established promising network of molecular interactions with COX-2 and TNF-α macromolecules.
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Antioxidantes , Proliferación Celular , Extractos Vegetales , Teucrium , Animales , Teucrium/química , Extractos Vegetales/farmacología , Extractos Vegetales/química , Humanos , Células HeLa , Antioxidantes/farmacología , Proliferación Celular/efectos de los fármacos , Masculino , Ratas Wistar , Ratas , Hígado/efectos de los fármacos , Hígado/metabolismo , Hígado/patología , Riñón/efectos de los fármacos , Riñón/metabolismo , Riñón/patología , Peroxidación de Lípido/efectos de los fármacos , Antineoplásicos Fitogénicos/farmacología , Antineoplásicos Fitogénicos/química , Antineoplásicos Fitogénicos/aislamiento & purificación , Estrés Oxidativo/efectos de los fármacos , Simulación del Acoplamiento MolecularRESUMEN
Teucrium persicum Boiss. an Iranian endemic plant is used in Iranian traditional medicine. E-cadherin transmembrane protein participates in adherens junctions and is the main partner for ß-catenin protein. The GC-MS analysis was used to detect the chemical constituents of the methanolic extract. Its effects on the transcription of the E-cadherin encoding gene, cellular levels, and localization of E-cadherin protein in PC-3 cells were investigated. About 70 chemical constituents were identified. Indirect immunofluorescence microscopy and western blotting results revealed the restoration of E-cadherin protein at cell adhesion contact sites in cells treated with T. persicum extract. Gene expression studies revealed that the extract increased the transcription of the E-cadherin encoding gene in PC-3 cells. These results suggest that T. persicum extract may contain potent compounds that provide further support for the anticancer properties of T. persicum. Surely, detailed molecular investigations are needed to find the mechanism(s) behind these effects.
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Teucrium , Humanos , Teucrium/química , Teucrium/metabolismo , Células PC-3 , Irán , Cadherinas/genética , Cadherinas/metabolismo , Extractos Vegetales/farmacologíaRESUMEN
Teucrium polium (germander, Lamiaceae) is a local plant in Qatar that has been used in folk medicine to treat numerous illnesses. It is known for its antioxidant, analgesic, anticancer, and antibacterial activities. This study aimed to evaluate the anti-inflammatory activity of Teucrium polium (TP) extract by α-carrageen-induced paw edema in adult Sprague Dawley rats. The animals were randomly grouped into control, acute inflammation, and plant extract groups. Acute inflammation was induced by a sub-plantar injection of 100 µL of 1% α-carrageenan into the rat's right hind paw. Three different doses of the ethanolic extract of TP were tested at different time periods (1, 3, and 5 hours). All doses of the TP ethanolic extract showed significant inhibition of α-carrageenan-induced rat paw edema in a dose-dependent manner in both early and late phases of edema formation. The size of the α-carrageen induced paw edema was significantly reduced one, three, and five hours after TP extract injection compared to the acute inflammation group. This inhibition was accompanied by high expression of interleukin 10 (IL-10) and low expression of monocyte chemoattractant protein 1 (MCP-1), IL-1ß and tumor necrosis factor alpha (TNF-α). The results indicated that the ethanolic extracts of TP possess significant anti-inflammatory and potential pharmaceutical properties.
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Teucrium , Ratas , Animales , Carragenina/toxicidad , Ratas Sprague-Dawley , Extractos Vegetales/farmacología , Antiinflamatorios/farmacología , Inflamación/inducido químicamente , Edema/inducido químicamenteRESUMEN
In this study, Teucrium polium (TP) methanolic extract, which has antidiabetic activity and protects the ß-cells of the pancreas, was loaded in polyethylene oxide/sodium alginate nanofibers by electrospinning and administered sublingually to evaluate their effectiveness in type-2 diabetes mellitus (T2DM) by cell culture and in vivo studies. The gene expressions of insulin, glucokinase, GLUT-1, and GLUT-2 improved in TP-loaded nanofibers (TPF) on human beta cells 1.1B4 and rat beta cells BRIN-BD11. Fast-dissolving (<120 s) sublingual TPF exhibited better sustainable anti-diabetic activity than the suspension form, even in the twenty times lower dosage in streptozotocin/nicotinamide-induced T2DM rats. The levels of GLP-1, GLUT-2, SGLT-2, PPAR-γ, insulin, and tumor necrosis factor-alpha were improved. TP and TPF treatments ameliorated morphological changes in the liver, pancreas, and kidney. The fiber diameter increased, tensile strength decreased, and the working temperature range enlarged by loading TP in fibers. Thus, TPF has proven to be a novel supportive treatment approach for T2DM with the features of being non-toxic, easy to use, and effective.
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Diabetes Mellitus Experimental , Diabetes Mellitus Tipo 2 , Nanofibras , Teucrium , Ratas , Humanos , Animales , Extractos Vegetales/farmacología , Extractos Vegetales/uso terapéutico , Teucrium/metabolismo , Administración Sublingual , Diabetes Mellitus Experimental/tratamiento farmacológico , Insulina/metabolismo , Diabetes Mellitus Tipo 2/tratamiento farmacológicoRESUMEN
BACKGROUND: Teucrium hyrcanicum L. (family Lamiaceae) is widely distributed in the North and Northwest of Iran. It has been used in the form of tea, tonic, and tincture for the treatment of various diseases such as cough, rheumatism, and fever. METHODS: In this study, the total phenolic and flavonoid contents, antioxidant and cytotoxic activities of methanol extract and different fractions of T. hyrcanicum were measured. Furthermore, the potential ability of T. hyrcanicum to protect against H2O2-induced oxidative stress was tested on the NIH3T3 cell line. Then, the isolation and structure elucidation of the compounds were performed on the most potent fractions. Finally, the quantification of isolated compounds in methanol extract (ME) was done by the HPLC method. Isolated phytochemicals were assessed for the cytotoxic and antioxidant activities. RESULTS: The results indicated that the methanol fraction (MF) had the highest amount of phenolic and flavonoid contents (69.36 mg GAE/g extract and 68.95 mg QE/g extract). The highest radical scavenging activities were observed from MF and ME (IC50 44.32 and 61.12 µg.ml-1, respectively). The best cytotoxicity was obtained by ethyl acetate fraction (EF) against A431 and MCF7 cell lines (IC50 values of 235.4and 326.6 µg.ml-1, respectively). The pretreatment with MF exerts the highest reduction in malondialdehyde (MDA) formation (IC50 2.51 µM, p < 0.001) compared to the H2O2 group (5.77 µM). Also, MF significantly inhibited H2O2-induced Glutathione (GSH) oxidation (p < 0.001). Furthermore, two phenolic compounds, acteoside and quercetin, were isolated and identified in MF and EF, respectively. The IC50 values of acteoside and quercetin in the DPPH assay were 7.19 and 5.56 µg.ml-1, respectively. Both quercetin and acteoside significantly reduced the MDA formation and inhibited GSH oxidation, which was comparable with BHA (as a standard antioxidant) (p < 0.05). Acteoside demonstrated significant cytotoxicity against all tested cell lines (IC50 = 32 to 145 µg.ml-1). The HPLC quantification of isolated compounds revealed that the quantity of acteoside and quercetin in ME were 93.31 and 16.87 µg.mg-1, respectively. CONCLUSION: The isolated compounds (quercetin and acteoside) had significant antioxidant activities and revealed a protective effect on H2O2-induced oxidative stress which was comparable with BHA.
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Antineoplásicos , Teucrium , Animales , Ratones , Antioxidantes/farmacología , Antioxidantes/química , Peróxido de Hidrógeno/toxicidad , Quercetina/farmacología , Metanol , Células 3T3 NIH , Extractos Vegetales/farmacología , Extractos Vegetales/química , Estrés Oxidativo , Flavonoides/farmacología , Flavonoides/química , Antineoplásicos/farmacologíaRESUMEN
Healing of wounds is the most deteriorating diabetic experience. Felty germander (Teucrium polium) possesses antioxidant, anti-inflammatory and antimicrobial activities that could accelerate wound healing. Further, nanohydrogels help quicken healing and are ideal biomaterials for drug delivery. In the current study, the chemical profiling, and standardization of T. polium methanolic extract by LC-ESI/TOF/MS/MS and quantitative HPLC-DAD analyses were achieved. The wound healing enhancement in diabetic rats by T. polium nanopreparation (TP-NP) as chitosan nanogel (CS-NG) and investigating the potential mechanisms were investigated. The prepared hydrogel-based TP-NP were characterized with respect to particle size, zeta potential, pH, viscosity, and release of major components. LC-ESI/TOF/MS/MS metabolomic profiling of T. polium revealed the richness of the plant with phenolic compounds, particularly flavonoids. In addition, several terpenoids were detected. Kaempferol content of T. polium was estimated to be 7.85 ± 0.022 mg/ g of dry extract. The wound healing activity of TP-NP was explored in streptozotocin-induced diabetic rats. Diabetic animals were subjected to surgical wounding (1 cm diameter). Then they were divided in 5 groups (10 each). These included Group 1 (untreated control rats), Group 2 received the vehicle of CS-NG; Group 3 (0.5 g of TP prepared in hydrogel), Group 4 (0.5 g of TP-NP), Group 5 represented a positive control treated with 0.5 g of a commercial product. All treatments were applied topically for 21 days. Application of TP-NP on skin wounds of diabetic animals accelerated the healing process as evidenced by epithelium regeneration, formation of granulation tissue followed by epidermal proliferation, along with keratinization as verified by H&E. This was confirmed through enhanced collagen synthesis, as shown by raised hydroxyproline content and Col1A1 gene expression. Moreover, TP-NP significantly alleviated wound oxidative burst and diminished the expressions of inflammatory biomarkers. Meanwhile, TP-NP could enhance the expressions of transforming growth factor beta1 (TGF-ß1), in addition to the angiogenic markers; vascular endothelia growth factor A (VEGFA) and platelet-derived growth factor receptor alpha (PDGFRα). Collectively, chitosan nanogel of T. polium accelerates wound healing in diabetic rats, which could be explained - at least partly - through alleviating oxidative stress and inflammation coupled with pro-angiogenic capabilities.
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Quitosano , Diabetes Mellitus Experimental , Teucrium , Ratas , Animales , Teucrium/química , Nanogeles/uso terapéutico , Quitosano/uso terapéutico , Extractos Vegetales/uso terapéutico , Diabetes Mellitus Experimental/tratamiento farmacológico , Diabetes Mellitus Experimental/metabolismo , Cromatografía Liquida , Espectrometría de Masas en Tándem , Cicatrización de Heridas , Hidrogeles/uso terapéuticoRESUMEN
Teucrium polium L., a member of the Lamiaceae family. The plant's leaf ingredients were extracted with hexane, ethyl acetate and ethanol, in that order. Column chromatography (CC), thin-layer chromatography (TLC), and high-performance liquid chromatography (HPLC) were used to figure out what phenolic components were in different extracts. Through these methods, three distinct fractions were isolated, originating from ethyl acetate and ethanolic extractions. Further examination of these fractions led to the discovery of 4-Hydroxybenzoic acid, catechol and coumaric acid. The antibacterial activity of isolated components was examined through rigorous testing. To evaluate the efficacy against different types of bacteria, the disc-diffusion assay was employed. This involved testing each fraction against Staphylococcus aureus, a Gram-positive bacterium, as well as four Gram-negative bacteria, including Staphylococcus aureus and Salmonella typhi, Pseudomonas aeruginosa, Klebsiella pneumoniae and Escherichia coli. Fraction (F1) was able to stop the growth of K. pneumoniae, P. aeruginosa, and S. aureus well with an inhibition zone of 19-21 mm. Fraction (F2) showed high activity against all types of bacteria used in this study, with an inhibition zone of 19-23 mm. This study's findings suggest that Teucrium polium holds potential as a valuable source of natural antibacterial phenolic compounds.
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Teucrium , Teucrium/química , Extractos Vegetales , Staphylococcus aureus , Antibacterianos , Bacterias , Fenoles/farmacología , Etanol , Pruebas de Sensibilidad MicrobianaRESUMEN
Aflatoxin B1 (AFB1) is common carcinogen causing acute and chronic hepatocyte injuries. This study aimed to determine the bioactive components of Teucrium polium methanolic extract (TPE) and to evaluate their protective role against AFB1-induced oxidative damage, cytotoxicity, and genotoxicity in rats. Six groups of male albino rats were treated orally for 4 weeks including the control group, the ÙAFB1-treated group (80 µg/kg b.w.), the groups treated with low (LD) or high (HD) dose TPE (50 or 100 mg/kg b.w.), and the groups treated with AFB1 plus TEP (LD) or TPE (HD). Blood and serum samples were collected for different assays. The GC-MS identified 34 compounds, the major compounds were pinene, germacrene D, α-cadinol, α-thujene, epi-bicyclosesquiphellandrene, and limonene. Animals that received AFB1 showed significant changes in all indicators of oxidative stress, biochemistry, cytokines, MNPCEs, comet tail formation in bone marrow, mRNA expression of inflammatory-related genes, Nrf2, and iNOS beside histological changes in the liver. TPE at the two doses tested showed insignificant changes in all tested parameters. The extract could normalize most of these parameters and the hepatic structure in AFB1-treated animals in a dose-dependent fashion. therefore, we concluded that TPE supplementation is effective for protection against AFB1 in endemic areas.
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Aflatoxina B1 , Teucrium , Masculino , Animales , Ratas , Aflatoxina B1/toxicidad , Estrés Oxidativo , Bioensayo , CarcinógenosRESUMEN
Ironwort (Sideritis montana L.), mountain germander (Teucrium montanum L.), wall germander (Teucrium chamaedrys L.), and horehound (Marrubium peregrinum L.) are species widely distributed across Europe and are also found in North Africa and West Asia. Because of their wide distribution they express significant chemical diversity. For generations, these plants have been used as medical herbs for treating different aliments. The aim of this paper is to analyze volatile compounds of four selected species that belong to the subfamily Lamioideae, family Lamiaceae, and inspect scientifically proven biological activities and potential uses in modern phytotherapy in relation to traditional medicine. Therefore, in this research, we analyze the volatile compounds from this plants, obtained in laboratory by a Clevenger-type apparatus, followed by liquid-liquid extraction with hexane as the solvent. The identification of volatile compounds is conducted by GC-FID and GC-MS. Although these plants are poor in essential oil, the most abundant class of volatile components are mainly sesquiterpenes: germacrene D (22.6%) in ironwort, 7-epi-trans-sesquisabinene hydrate (15.8%) in mountain germander, germacrene D (31.8%) and trans-caryophyllene (19.7%) in wall germander, and trans-caryophyllene (32.4%) and trans-thujone (25.1%) in horehound. Furthermore, many studies show that, in addition to the essential oil, these plants contain phenols, flavonoids, diterpenes and diterpenoids, iridoids and their glycosides, coumarins, terpenes, and sterols, among other active compounds, which affect biological activities. The other goal of this study is to review the literature that describes the traditional use of these plants in folk medicine in regions where they grow spontaneously and compare them with scientifically confirmed activities. Therefore, a bibliographic search is conducted on Science Direct, PubMed, and Google Scholar to gather information related to the topic and recommend potential applications in modern phytotherapy. In conclusion, we can say that selected plants could be used as natural agents for promoting health, as a source of raw material in the food industry, and as supplements, as well as in the pharmaceutical industry for developing plant-based remedies for prevention and treatment of many diseases, especially cancer.
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Diterpenos , Lamiaceae , Aceites Volátiles , Plantas Medicinales , Sideritis , Teucrium , Lamiaceae/química , Plantas Medicinales/química , Serbia , Fitoterapia , Aceites Volátiles/química , Teucrium/química , Extractos Vegetales/farmacología , Extractos Vegetales/químicaRESUMEN
Background: One of the inflammatory diseases of the respiratory system is asthma. Teucrium polium (TP) has anti-inflammatory and anti-allergic properties and its anti-asthmatic effects have not been investigated yet. RORγt is an inflammatory transcription factor for Th17 differentiation. By secreting IL-17, Th17 leads to neutrophilic inflammation in the lungs. As an anti-inflammatory cytokine, IL-10 reduces the dissemination of inflammatory elements in the airways. Objective: To evaluate the effect of TP extract in asthma treatment. Methods: Thirty female Balb/c mice were distributed into 5 groups (n=6) including the control, treated with ovalbumin (OVA), and OVA+ various doses of TP (50, 150, and 300 mg/kg). All groups except the control group were sensitized to OVA solution on days 0, 7, and 14 by subcutaneous injection. The challenge was performed on days 18 to 21 by the inhalation of 1% OVA and the treatment was done with TP extract in the treatment groups, half an hour before the challenge. On day 22, the serum and spleen samples were collected to determine IL-10 serum levels and RORγt gene expression, respectively. Results: In the treatment groups, the expression of RORγt significantly decreased when using OVA+ Tp extract (150 mg/kg and 300 mg/kg), and IL-10 serum levels significantly increased when using OVA+ TP extract (150 mg/kg) compared with the OVA group. Conclusion: It is possible that TP extract can be effective in improving asthma by reducing inflammation.
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Asma , Teucrium , Animales , Femenino , Ratones , Antiinflamatorios/uso terapéutico , Antiinflamatorios/farmacología , Asma/tratamiento farmacológico , Líquido del Lavado Bronquioalveolar , Modelos Animales de Enfermedad , Inflamación/tratamiento farmacológico , Interleucina-10/genética , Pulmón/metabolismo , Ratones Endogámicos BALB C , Miembro 3 del Grupo F de la Subfamilia 1 de Receptores Nucleares/genética , Ovalbúmina/efectos adversosRESUMEN
This study investigates the chemical compositions and biological activities of the methanol extracts of three endemic Teucrium species (T. ekimii, T. pestalozzae and T. semrae) collected from Turkey. Total phenolic and flavonoid contents were assessed spectrophotometrically. The total phenolic and flavonoid content in the T. ekimii methanolic extract were importantly higher than other both extracts. The polyphenolic components of the extracts were identified by liquid chromatography. Seven phenolic compounds were identified namely catechin, rutin, luteolin, apigenin chlorogenic acid, sinapic acid and rosmarinic acid. Antioxidant activities were determined by five in vitro assays namely phosphomolybdenum assay, 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity, ß-carotene bleaching assay, ferric ions reducing antioxidant power (FRAP) and cupric ions reducing antioxidant capacity (CUPRAC). The total antioxidant activity method exhibited that T. ekimii methanol extract exerted better antioxidant activity. The methanol extract of T. ekimii showed better antiradical scavenging activity as measured by DPPH assay. The antimicrobial capacities were determined by agar diffusion assay. Three endemic Teucrium species tested showed slight antibacterial activity only against Aeromonas hydrophila, Klebsiella pneumoniae and Streptococcus pneumoniae. The findings showed that three endemic Teucrium species may be utilized as natural sources of antioxidant and antimicrobial compounds in food and farmacy products.
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Lamiaceae , Teucrium , Antioxidantes/farmacología , Turquía , Metanol , Flavonoides/farmacología , Extractos Vegetales/farmacologíaRESUMEN
ETHNOPHARMACOLOGICAL RELEVANCE: Since ancient times, Teucrium L. species have been among the most commonly used traditional medicinal plants mainly in the Mediterranean region. From tackling gastrointestinal problems to maintaining the healthy functioning of endocrine glands, and from treating malaria to severe dermatological disorders, Teucrium species are known to have extensive therapeutic applications. Teucrium polium L. and Teucrium parviflorum Schreb. are the two members of the genus that have been used in Turkish folk medicine for various medicinal purposes. AIM OF THE STUDY: To determine the phytochemical compositions of the essential oils and ethanol extracts of Teucrium polium and Teucrium parviflorum collected from different locations in Turkiye along with the investigation of in vitro antioxidant, anticancer, antimicrobial activities, and both in vitro and in silico enzyme inhibitory activities of the extracts. MATERIALS AND METHODS: Ethanol extracts of Teucrium polium aerial parts and roots, and aerial parts of Teucrium parviflorum were prepared. Volatile profiling of the essential oils by GC-MS, phytochemical profiling of the ethanol extracts by LC-HRMS, antioxidant activity by DPPH radical scavenging, ABTS cation radical scavenging, CUPRAC, and metal chelating activity assays, anticholinesterase, antityrosinase, antiurease, activities by different enzyme inhibitory activity assays, anticancer activity by SRB cell viability assay, and antimicrobial activity against a standard panel of bacteria and fungi by the microbroth dilution technique. Molecular docking studies were performed by Autodock Vina (Ver. 1.1.2). RESULTS: The studied extracts were found to be quite rich in various biologically important volatile and phenolic compounds. (-)-Epigallocatechin gallate, which is a molecule renowned for having great therapeutic potential, was the major compound of all extracts. Teucrium polium aerial parts extract was revealed as a great source for naringenin with 16327 ± 685.23 µg/g extract. All extracts exerted significant antioxidant activity by different methods. All extracts demonstrated antibutrylcholinesterase, antityrosinase, and antiurease activities by in vitro and in silico assays. Teucrium polium roots extract stood out with remarkable tyrosinase and urease inhibitory and cytotoxic activities. CONCLUSION: The obtained results from this multi-disciplinary study proves that the traditional use of these two Teucrium species is justified, and the mechanisms behind are enlightened.
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Antiinfecciosos , Aceites Volátiles , Plantas Medicinales , Teucrium , Antioxidantes/farmacología , Antioxidantes/química , Extractos Vegetales/farmacología , Extractos Vegetales/química , Teucrium/química , Simulación del Acoplamiento Molecular , Aceites Volátiles/farmacología , Aceites Volátiles/química , Fitoquímicos/farmacología , Antiinfecciosos/farmacología , EtanolRESUMEN
This work represents the first multi-scale study on Teucrium fruticans L. cultivated at the Ghirardi Botanic Garden (Lombardy, Northern Italy), combining a micromorphological and a phytochemical survey on the plant's aerial parts. Micromorphological investigations, performed by Light Microscopy, Fluorescence Microscopy and Scanning Electron Microscopy, highlighted the presence of five trichomes morphotypes, distinguished by a different distribution pattern: peltates, short-stalked and ball-like medium-stalked capitates, ubiquitous on the whole plant, medium-stalked and long-stalked capitates, exclusive to the floral whorls. Both peltates and medium-stalked capitates were recognized as the main terpene production sites. Phytochemical characterization focused on the essential oils (EOs), obtained by Clevenger-type hydrodistillation in February and April 2022 and characterized by Gas Chromatography-Mass Spectrometry (GC/MS), which resulted mainly formed by sesquiterpene hydrocarbons. The February EO profile was characterized by ß-caryophyllene (28.30 %) and germacrene D (19.16 %) as main compounds, while in April ß-myrcene was detected at high percentage (13.77 %), in addition to the previous two components (15.72 % and 11.55 %, respectively). Literature data, dealing with the biological activities of the main oil constituents, highlighted an anti-microbial, anti-inflammatory, and anti-tumor potential, due to the high content in sesquiterpenes and, particularly, of ß-caryophyllene and germacrene D.
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Aceites Volátiles , Sesquiterpenos , Teucrium , Aceites Volátiles/química , Teucrium/química , Tricomas/química , Sesquiterpenos/químicaRESUMEN
The phytochemical analysis on the aerial parts of Teucrium capitatum L. collected from a new population in Central Italy, led to the identification of eight compounds, i.e. pheophytin a (1), poliumoside (2), apigenin (3), luteolin (4), cirsimaritin (5), cirsiliol (6), 8-O-acetyl-harpagide (7) and teucardoside (8) belonging to four different classes of secondary metabolites. Pheophytin a (1) represents a newly identified compound in the genus whereas compounds (7-8) are newly identified compound in the species. The chemotaxonomic and ethnobotanical aspects relative to the presence of these compounds were widely discussed suggesting important conclusions for both.
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Teucrium , Teucrium/química , Etnobotánica , Extractos Vegetales/química , Fitoquímicos/análisis , Componentes Aéreos de las Plantas/químicaRESUMEN
Management of gastric cancer is still challenging due to resistance to current chemotherapeutics and recurrent disease. Moreover, green- synthesized zinc oxide nanoparticles (ZnO-NPs) using natural resources are one of the most promising therapeutic agents for anticancer therapy. Here we report the facile green synthesis and characterization of ZnO-NPs from Teucrium polium (TP-ZnO-NP) herb extract and the anticancer activities of these nanoparticles on gastric cancer cells. Facile green synthesis of TP-ZnO-NP was achieved using zinc acetate dihydrate. For the characterization of TP-ZnO-NP, UV-vis spectroscopy, FTIR, SEM, XRD and EDX analyses were performed. Antiproliferative and anticancer activities of TP-ZnO-NP were explored using the HGC-27 gastric cancer cell line model. MTT cell viability and colony formation assays were used for the analysis of cell proliferation and migration. Wound healing assay was used to analyze the migration capacities of cells. Annexin V/PI double staining, DNA ladder assay, and Acridine orange/Ethidium bromide staining were performed to analyze the induction of apoptosis. qPCR was used to determine gene expression levels of apoptotic and epithelial to mesenchymal transition marker genes. The aqueous extract of TP served as both a reducing and capping agent for the successful biosynthesis of zinc oxide nanoparticles. Remarkably, synthesized TP-ZnO-NPs were found to have significant antiproliferative and anticancer activities on HGC-27 gastric cancer cells. Collectively, current data suggest that TP-ZnO-NP is a novel and promising anticancer agent for future therapeutic interventions in gastric cancer.
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Nanopartículas del Metal , Nanopartículas , Neoplasias Gástricas , Teucrium , Óxido de Zinc , Humanos , Óxido de Zinc/farmacología , Óxido de Zinc/química , Óxido de Zinc/metabolismo , Teucrium/metabolismo , Neoplasias Gástricas/tratamiento farmacológico , Transición Epitelial-Mesenquimal , Extractos Vegetales/farmacología , Extractos Vegetales/química , Nanopartículas/química , Apoptosis , Transducción de Señal , Nanopartículas del Metal/químicaRESUMEN
Mentha suaveolens (MS), Conyza canadensis (CC), Teucrium polium (TP) and Salvia verbenaca (SV) are used in Morocco to treat hypertension. Our aim was to characterize the composition and vasoreactivity of extracts of MS, CC, TP and SV. The chemical compositions of aqueous extracts of MS, SV and TP, and of a hydromethanolic extract of CC, were identified by HPLC-DAD. The vasoreactive effect was tested in rings of the thoracic aorta of female Wistar rats (8-14 weeks-old) pre-contracted with 10 µM noradrenaline, in the absence or presence of L-NAME 100 µM, indomethacin 10 µM or atropine 6 µM, to inhibit nitric oxide synthase, cyclooxygenase or muscarinic receptors, respectively. L-NAME and atropine decreased the vasorelaxant effect caused by low concentrations of MS. Atropine and indomethacin decreased the vasorelaxant effect of low concentrations of SV. High concentrations of MS or SV and the effect of SV and TP were not altered by any antagonist. The activation of muscarinic receptors and NO or the cyclooxygenase pathway underlie the vasorelaxant effect of MS and SV, respectively. Neither of those mechanisms underlines the vasorelaxant effect of CC and TP. These vasorelaxant effect might support the use of herbal teas from these plants as anti-hypertensives in folk medicine.
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Conyza , Mentha , Salvia , Teucrium , Ratas , Animales , Vasodilatadores/farmacología , Ratas Wistar , Mentha/metabolismo , NG-Nitroarginina Metil Éster/farmacología , Salvia/metabolismo , Prostaglandina-Endoperóxido Sintasas/metabolismo , Extractos Vegetales/farmacología , Extractos Vegetales/metabolismo , Vasodilatación , Aorta/metabolismo , Aorta Torácica , Receptores Muscarínicos/metabolismo , Derivados de Atropina/metabolismo , Derivados de Atropina/farmacologíaRESUMEN
Herbal medicines are still widely practiced in Kurdistan Region-Iraq, especially by people living in villages on mountainous regions. Among plants belonging to the genus Teucrium (family Lamiaceae), which are commonly employed in the Kurdish traditional medicine, we have analyzed, for the first time, the methanol and aqueous methanol extracts of T. parviflorum aerial parts. The plant is mainly used by Kurds to treat jaundice, liver disorders and stomachache. We aimed to determine the phytochemical profile of the extracts and the structures of the main components, so to provide a scientific rationale for the ancient use of the plant in the ethno-pharmacological field. TLC analysis of the two extracts on silica gel and reversed phase TLC plates, using different visualization systems, indicated similar contents and the presence of phenolics, flavonoids, terpenoids and sugars. The chlorophyll-free extracts exhibited weak/no antimicrobial activities against a panel of bacteria (MICs = 800-1600 µg/mL) and fungal strains (MICs ≥ 5 mg/mL). At the concentration of 600 µg/mL, the methanol extract showed moderate antiproliferative effects against A549 and MCF-7 cancer cell lines in the MTS assay. Moreover, both extracts exhibited a significant dose-dependent free radical scavenging action against the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical (EC50 = 62.11 and 44.25 µg/mL, respectively). In a phytochemical study, a high phenolic content (77.08 and 81.47 mg GAE/g dry extract, respectively) was found in both extracts by the Folin-Ciocalteu assay. Medium pressure liquid chromatographic (MPLC) separation of the methanol extract on a reversed phase cartridge eluted with a gradient of MeOH in H2O, afforded two bioactive iridoid glucosides, harpagide (1) and 8-O-acetylharpagide (2). The structures of 1 and 2 were established by spectral data, chemical reactions, and comparison with the literature. Interestingly, significant amounts of hepatotoxic furano neo-clerodane diterpenoids, commonly occurring in Teucrium species, were not detected in the extract. The wide range of biological activities reported in the literature for compounds 1 and 2 and the significant antiradical effects of the extracts give scientific support to the traditional use in Iraqi Kurdistan of T. parviflorum aerial parts for the preparation of herbal remedies.
Asunto(s)
Diterpenos de Tipo Clerodano , Plantas Medicinales , Teucrium , Antioxidantes/química , Diterpenos de Tipo Clerodano/análisis , Flavonoides/análisis , Flavonoides/farmacología , Radicales Libres/análisis , Humanos , Irak , Glucósidos Iridoides/análisis , Iridoides/química , Metanol , Fenoles/análisis , Fitoquímicos/farmacología , Extractos Vegetales/química , Plantas Medicinales/química , Gel de Sílice , Azúcares , Teucrium/químicaRESUMEN
Oxaliplatin (Oxa)-associated adverse side effects have considerably limited the clinical use of the drug in colon cancer therapy. Mutant p53 has diverse mutational profiles in colon cancer, and it influences the potencies of various chemotherapeutic drugs, including Oxa. Thus, it would be highly beneficial to identify an alternative therapeutic strategy that not only reduces the toxicity of Oxa, but also exerts a synergistic effect against colon cancers, regardless of their p53 profiles. The present study was aimed at preparing and optimizing Teucrium polium L. essential oil nanoemulsion (TPO-NANO) and investigating its effect on the sensitivity of colon cancer cells with differences in p53 status (HCT116 wild-type and HT-29 mutant-type) to Oxa. The viability of treated cells was determined and the combination index (CI) was calculated. Morphological changes were determined under inverted microscopy, while percentage apoptosis was assayed using flow cytometry. Intracellular ROS and the protein levels of p53 and Bax were measured. The colony-forming potential of treated cells was determined using colony assay. The size of TPO-NANO was markedly increased from 12.90 ± 0.04 nm to 14.47 ± 0.53 nm after loading Oxa (p ≤ 0.05). The combination (Oxa + TPO-NANO) produced a synergetic effect in HCT116 and HT-29, with CI of 0.94 and 0.88, respectively. Microscopic examination and flow cytometric analysis revealed that cells treated with Oxa + TPO-NANO had a higher percentage of apoptosis than cells exposed to monotherapy. Cumulatively, Oxa exerted an apoptotic effect on wild or mutant p53 colon cancer cells when combined with TPO-NANO, through a mechanism involving ROS-mediated mitochondrial apoptosis.
Asunto(s)
Neoplasias del Colon , Aceites Volátiles , Teucrium , Apoptosis , Línea Celular Tumoral , Neoplasias del Colon/tratamiento farmacológico , Neoplasias del Colon/metabolismo , Células HCT116 , Células HT29 , Humanos , Aceites Volátiles/farmacología , Oxaliplatino/farmacología , Especies Reactivas de Oxígeno/metabolismo , Teucrium/metabolismo , Proteína p53 Supresora de Tumor/metabolismoRESUMEN
Herbal medicine is still widely practiced in the Kurdistan Region, Iraq, especially by people living in villages in mountainous regions. Seven taxa belonging to the genus Teucrium (family Lamiaceae) are commonly employed in the Kurdish traditional medicine, especially to treat jaundice, stomachache and abdominal problems. We report, in this paper, a comprehensive account about the chemical structures and bioactivities of most representative specialized metabolites isolated from these plants. These findings indicate that Teucrium plants used in the folk medicine of Iraqi Kurdistan are natural sources of specialized metabolites that are potentially beneficial to human health.