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1.
Curr Top Med Chem ; 2024 Jun 11.
Artigo em Inglês | MEDLINE | ID: mdl-38867521

RESUMO

Osteoarthritis (OA) is a common chronic articular degenerative disease characterized by articular cartilage degradation, synovial inflammation/immunity, and subchondral bone lesions. Recently, increasing interest has been devoted to treating or preventing OA with herbal medicines. The mechanism of action of plant raw materials used in osteoarthrosis treatment is well documented. They are sought after because of the high frequency of inflammation of the knee joint among both elderly and young people engaged in sports in which their knee joints are often exposed to high-stress conditions. The purpose of this work was to present some most effective and safe plant medicines with proven mechanisms of action that can help to alleviate the growing social problem of osteoarthrosis caused in recent years. A review of the available literature based primarily on the latest editions of ESCOP and EMA monographs and the latest scientific papers has made it possible to select and propose medical management of osteoarthrosis by ranking plant medicines according to their effectiveness. Clinical studies of raw plant materials, such as Harpagophyti radix, Olibanum indicum, and Urticae foliumet herba have indicated that these drugs should be considered the first choice in osteoarthrosis treatment. The efficacy of Rosae pseudo-fructus, Salicis cortex, Filipendulae ulmariae flos et herba, Ribis nigri folium, and externally applied Capsici fructus and Symphyti radix, has also been proven by pharmacological studies. All the plant medicines mentioned in the paper have been studied in detail in terms of their phytochemistry, which can help doctors in their decision-- making in the treatment of osteoarthrosis.

2.
Antioxidants (Basel) ; 12(10)2023 Oct 11.
Artigo em Inglês | MEDLINE | ID: mdl-37891925

RESUMO

Hepatocellular damage by the harmful effects of xenobiotics, which increase the production of free radicals, is a widespread phenomenon. The extract from the leaves of Cynara scolymus L. available as an artichoke preparation (natural source) of antioxidants may serve as a potential hepatoprotective factor. This study aimed to evaluate the impact of the protective and regenerative properties of artichoke preparation on the liver in three extract doses: 0.5; 1.0; and 1.5 g/kg bw/day. The evaluation was conducted by measuring the levels of oxidative stress parameters, including glutathione (GSH), glutathione S-transferases (GST), nitric oxide (NO), superoxide dismutase (SOD), catalase (CAT), Trolox equivalent antioxidant capacity (TEAC), thiobarbituric acid reactive substances (TBARS), glutathione peroxidase (GPx), paraoxonase 1 (PON1), SH- group, nitrosylated protein (RSNO), as well as such liver enzymes as alanine aminotransferase (ALT), aspartate aminotransferase (AST), and alkaline phosphatase (ALP) in the plasma and liver homogenate of rats with liver damage induced by CCl4 (1 mL/kg bw). Measurements were taken in plasma and liver homogenate. The results have demonstrated that the artichoke preparation, owing to its high antioxidative potential, exhibits protective and regenerative effects on the liver. This is supported by the observation of higher GSH levels in the plasma of rats treated with artichoke extract for two weeks before CCl4 exposure. Furthermore, the artichoke extract has shown regenerative properties, as evidenced by lower ALT, AST, and SOD activity in the group treated with artichoke extract after CCl4 exposure. These findings suggest that the in vivo administration of artichoke preparation may be beneficial for the protection and regeneration of the liver.

3.
Cells ; 11(12)2022 06 11.
Artigo em Inglês | MEDLINE | ID: mdl-35741026

RESUMO

COVID-19 infection causes complications, even in people who have had a mild course of the disease. The most dangerous seem to be neurological ailments: anxiety, depression, mixed anxiety-depressive (MAD) syndromes, and irreversible dementia. These conditions can negatively affect the respiratory system, circulatory system, and heart functioning. We believe that phytotherapy can be helpful in all of these conditions. Clinical trials confirm this possibility. The work presents plant materials (Valeriana officinalis, Melissa officinalis, Passiflora incarnata, Piper methysticum, Humulus lupulus, Ballota nigra, Hypericum perforatum, Rhodiola rosea, Lavandula officinalis, Paullinia cupana, Ginkgo biloba, Murraya koenigii, Crataegus monogyna and oxyacantha, Hedera helix, Polygala senega, Pelargonium sidoides, Lichen islandicus, Plantago lanceolata) and their dominant compounds (valeranon, valtrate, apigenin, citronellal, isovitexin, isoorientin, methysticin, humulone, farnesene, acteoside, hypericin, hyperforin, biapigenin, rosavidin, salidroside, linalool acetate, linalool, caffeine, ginkgolide, bilobalide, mihanimbine, epicatechin, hederacoside C,α-hederine, presegenin, umckalin, 6,7,8-trixydroxybenzopyranone disulfate, fumaroprotocetric acid, protolichesteric acid, aucubin, acteoside) responsible for their activity. It also shows the possibility of reducing post-COVID-19 neurological, respiratory, and cardiovascular complications, which can affect the functioning of the nervous system.


Assuntos
Tratamento Farmacológico da COVID-19 , COVID-19 , Sistema Cardiovascular , Hypericum , Plantas Medicinais , COVID-19/complicações , Humanos , Fitoterapia , Plantas Medicinais/química
4.
Postepy Dermatol Alergol ; 38(5): 798-803, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34849126

RESUMO

INTRODUCTION: Sweet whey is known for its various pharmacological uses as an anti-inflammatory and antioxidant agent. This is because whey proteins accelerate the release of bioactive peptides, increase the level of intracellular glutathione and the production of interleukin IL-8. However, the potential skin care effects of whey, especially in its unprocessed state, are still not clear. AIM: To evaluate in vivo the cosmetic features of sweet whey baths and wet wraps on human skin. MATERIAL AND METHODS: Thirteen healthy Caucasian adult females with no dermatological diseases were examined. We used the Courage-Khazaka MPA-9 device to evaluate the effects of sweet whey baths/wet wraps on skin hydration, transepidermal water loss (TEWL) and melanin and erythema index and pH level in human skin. RESULTS: It appeared that bathing in the sweet whey solution significantly improved the barrier function of the skin in comparison with tap water treated control area on the face cheek as well as on the forearm by decreasing the value of transepidermal water loss with statistical significance. Skin hydration was enhanced only on the facial skin. No significant differences concerning other parameters were observed. CONCLUSIONS: We showed that sweet whey may have decreased the TEWL level and fixed the barrier function of epidermis in this way. It seems that a bath solution with sweet whey is well tolerated and may promote local blood circulation without affecting the pH value of the skin.

5.
Plants (Basel) ; 10(6)2021 Jun 09.
Artigo em Inglês | MEDLINE | ID: mdl-34207928

RESUMO

Due to increasing resistance of pathogenic fungi to antifungal treatments, new types of drugs are needed. For this purpose, active substances with antifungal properties occurring in natural compounds should be considered. The herb Psephellus bellus shows strong antifungal activity and is characterized by unique guaianolides, which have an ester on C-2. Thus, a specialized method of isolation and testing was applied to assess the pharmacological effects of these guaianolides. After phytochemical analysis (chromatography and spectral methods), selected lipophilic compounds and the herb extract of this species containing 26 sesquiterpene lactones were tested. The antifungal effect of the herbal compounds was determined on clinical strains of fungi Candida, Rhodotorula, Trichophyton, Microsporum, and Scopulariopsis using a diffusion test. The MTT assay was employed to study the cytotoxic effects of the extract against human fibroblasts. Statistical analysis was performed. All analyzed compounds exhibited antifungal activity in cultivations suitable for assessment. Most lipophilic cebellins from Psephellus bellus prevent the growth of most fungal strains.

6.
Int J Mol Sci ; 22(9)2021 Apr 23.
Artigo em Inglês | MEDLINE | ID: mdl-33922647

RESUMO

Three germacranolides, as well as five flavonoids, natural steroid and simple phenolic compounds, were isolated from the inflorescence of Stizolophus balsamita growing in Iran. The paper presents active compounds found for the first time in the inflorescence of this species. The flavonoids, simple phenolic compounds and natural steroids have been isolated for the first time in the genus Stizolophus. The MTT assay was employed to study in vitro cytotoxic effects of the taxifolin against human fibroblasts. We also evaluate the possible biological properties/cosmetic effects of Stizolophus balsamita extract and taxifolin on the human skin. Sixty healthy Caucasian adult females with no dermatological diseases were investigated. We evaluate the effects of S. balsamita extract and taxifolin on skin hydration and transepidermal water loss (TEWL). It was revealed that S. balsamita extract might decrease TEWL level and fixed the barrier function of the epidermis. The presence of bioactive phytochemical constituents in S. balsamita inflorescences makes them a valuable and safe source for creating new cosmetics and medicines.


Assuntos
Asteraceae/química , Inflorescência/química , Compostos Fitoquímicos/farmacologia , Extratos Vegetais/farmacologia , Pele/efeitos dos fármacos , Adulto , Cosméticos , Feminino , Voluntários Saudáveis , Humanos , Pessoa de Meia-Idade
7.
Chem Biol Interact ; 342: 109479, 2021 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-33878320

RESUMO

The present study was designed to identify the biological activity of three ecdysones, i.e., 20-hydroxyecdysone (20-HE), ajugasterone C, and polypodine B isolated from Serratula coronata. The main objective was to investigate the molecular mechanism of the biological activity of those compounds and to assess their impact on breast cancer cell survival and cell cycle. Cell lines were selected according to their hormone receptor status since this factor is perceived as a crucial one in the cancer prognosis as well as cancer cell response to therapy. Consequently, MCF7 (ER/PR+, HER2-), T-47D (ER/PR+, HER2-/+), and MDA-MB-231 (ER/PR-, HER2-) were enrolled in the study. Additionally, a non-tumorigenic, MCF10A cells were selected to verify any potential specificity to cancer cells. Interestingly, none of the studied compounds affected the viability of MCF10A cells while cancer cells were altered, albeit in different ways. Polypodine B did not affect the viability or cell cycle distribution of studied breast cancer cells. By contrast, 20-HE and ajugasterone C significantly inhibited the viability of triple-negative cell line, MDA-MB-231. Interestingly, 20-HE revealed proapoptotic activity in MDA-MB-231 and T-47D cells that was manifested by alterations in PARP, Bax, and Bcl-2 levels as well as caspase-3 activation. Moreover, 20-HE induced autophagy that was mediated by modification of autophagy-associated proteins, i.e., LC3, p62, and mTOR, but only in MDA-MB-231 cells. This study is the first to report diverse biological activity of phytoecdysones in different breast cancer cells, that suggests association with molecular characteristics including receptor status but also other biological properties and genetic markers.


Assuntos
Antineoplásicos/farmacologia , Apoptose/efeitos dos fármacos , Autofagia/efeitos dos fármacos , Neoplasias da Mama/tratamento farmacológico , Ecdisterona/farmacologia , Linhagem Celular Tumoral , Ensaios de Seleção de Medicamentos Antitumorais , Ecdisterona/análogos & derivados , Humanos
8.
Molecules ; 25(22)2020 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-33203185

RESUMO

Sesquiterpene lactones, coumarins, phytoecdysones and phenolic compounds are characteristic of the species from the subtribe Centaureinae (Asteraceae). Many of the compounds isolated from plants of the Centaureinae subtribe have strong pharmacological properties. It may be suggested that these compounds' chemical structure might be an indicator of these pharmacological properties. The aim of the study was to describe recent studies in the field of phytotherapy, focusing on compounds isolated from chosen plants of Centaureinae and the possibilities of using them to treat antifungal infections, inhibit serotonin and ease symptoms of seborrhea dermatitis and hyperpigmentation. The results of these biological studies have shown that in the future, extracts from the above-mentioned plant material may be used as active substances in new safe and effective drugs.


Assuntos
Asteraceae/química , Dermatite Seborreica/tratamento farmacológico , Hiperpigmentação/tratamento farmacológico , Transtornos de Enxaqueca/tratamento farmacológico , Micoses/tratamento farmacológico , Fitoterapia , Animais , Humanos
9.
Artigo em Inglês | MEDLINE | ID: mdl-32899750

RESUMO

Phytoecdysteroids are natural compounds with therapeutic benefits in both humans and animals. The effectiveness of natural products with health potential is based on the activities and potencies of their active ingredients. In this study, dominant ecdysteroids-ajugasterone C, 20-hydroxyecdysone and polypodine B-from the Serratula coronata (S. coronata) herb were separated by column chromatography, identified by spectroscopic data and quantified by high-performance liquid chromatography with a diode array detector (HPLC-DAD). The obtained concentration of ecdysteroids (approximately 23%) in the S. coronatae herb extract enhances the possibility of their use in pharmaceutical and cosmetic products with high levels of phytoecdysteroids. Moreover, this study has shown a positive effect of ecdysteroids-containing cream on changes in quality of life and a beneficial effect in reducing the symptoms of seborrheic dermatitis. It has been demonstrated that the application of the cream with phytoecdysteroids resulted in a statistically significant alleviation of symptoms (p < 0.05), especially in terms of itching, pain or burning sensations in the affected areas in comparison to previous symptoms.


Assuntos
Dermatite , Qualidade de Vida , Animais , Cromatografia Líquida de Alta Pressão/métodos , Humanos , Extratos Vegetais , Esteroides/química
10.
Int J Mol Sci ; 21(13)2020 Jun 30.
Artigo em Inglês | MEDLINE | ID: mdl-32629817

RESUMO

By attaching to the angiotensin converting enzyme 2 (ACE2) protein on lung and intestinal cells, Sudden Acute Respiratory Syndrome (SARS-CoV-2) can cause respiratory and homeostatic difficulties leading to sepsis. The progression from acute respiratory failure to sepsis has been correlated with the release of high-mobility group box 1 protein (HMGB1). Lack of effective conventional treatment of this septic state has spiked an interest in alternative medicine. This review of herbal extracts has identified multiple candidates which can target the release of HMGB1 and potentially reduce mortality by preventing progression from respiratory distress to sepsis. Some of the identified mixtures have also been shown to interfere with viral attachment. Due to the wide variability in chemical superstructure of the components of assorted herbal extracts, common motifs have been identified. Looking at the most active compounds in each extract it becomes evident that as a group, phenolic compounds have a broad enzyme inhibiting function. They have been shown to act against the priming of SARS-CoV-2 attachment proteins by host and viral enzymes, and the release of HMGB1 by host immune cells. An argument for the value in a nonspecific inhibitory action has been drawn. Hopefully these findings can drive future drug development and clinical procedures.


Assuntos
Betacoronavirus/fisiologia , Proteína HMGB1/metabolismo , Insuficiência Respiratória/patologia , Sepse/patologia , Enzima de Conversão de Angiotensina 2 , Proteína HMGB1/antagonistas & inibidores , Humanos , Macrófagos/citologia , Macrófagos/metabolismo , Macrófagos/virologia , Peptidil Dipeptidase A/química , Peptidil Dipeptidase A/metabolismo , Exsudatos de Plantas/química , Exsudatos de Plantas/farmacologia , Plantas Medicinais/química , Plantas Medicinais/metabolismo , Insuficiência Respiratória/metabolismo , Insuficiência Respiratória/prevenção & controle , SARS-CoV-2 , Sepse/metabolismo , Sepse/prevenção & controle , Internalização do Vírus/efeitos dos fármacos
11.
Artigo em Inglês | MEDLINE | ID: mdl-32120948

RESUMO

The milky juice of the greater celandine herb has been used in folk medicine and in homeopathy for treatment of viral warts for years. However, classical medicine fails to use properties of celandine herbs in treatment of diseases induced by papilloma viruses. Nevertheless, dermatological outpatient clinics are regularly visited by patients reporting efficacy of milky sap isolated from celandine herb in treatment of their own viral warts. Authors of this report decided to analyze the respective world literature in order to critically evaluate the potential for treatment of viral dermal warts using the milky sap of celandine. Moreover, the case of a 4-year old boy was presented, the parents of whom applied the milky sap of celandine on viral warts on hands. Thus, Ch. majus may be a potential therapeutic modality for skin warts, especially in a young patients, where conventional therapy may be difficult to apply.


Assuntos
Chelidonium/química , Preparações de Plantas/uso terapêutico , Verrugas/terapia , Antivirais/uso terapêutico , Pré-Escolar , Mãos , Humanos , Masculino
12.
Molecules ; 24(22)2019 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-31731603

RESUMO

The presence of dominant active compounds in standardised methanol extract from the leaves of Stizolophus balsamita (S. balsamita) was examined using HPLC with a diode-array detector. The extract and three dominant parthenolide derivatives were tested with Serotonin Research ELISA for their ability to inhibit the serotonin release from platelets. The antiserotonin effect of the extract was compared with that of parthenolide, a compound with proven antiserotonin and antimigraine effects. This study aimed to evaluate the ability of natural parthenolide derivatives to inhibit serotonin release from platelets. Izospiciformin, stizolin and stizolicin were analysed along with the standardised alcohol extract of S. balsamita leaves, which also contained four other parthenolide derivatives. All the analysed substances were found to inhibit serotonin release from platelets as compared with the control sample, which had 100% of serotonin released. Izospiciformin had the most significant impact (97.98% serotonin release inhibition). The effect of the methanol extract of S. balsamita on the serotonin release inhibition was also statistically significant.


Assuntos
Asteraceae/química , Plaquetas/metabolismo , Extratos Vegetais , Folhas de Planta/química , Antagonistas da Serotonina , Serotonina/metabolismo , Sesquiterpenos , Animais , Feminino , Extratos Vegetais/química , Extratos Vegetais/farmacologia , Ratos , Ratos Wistar , Antagonistas da Serotonina/química , Antagonistas da Serotonina/farmacologia , Sesquiterpenos/química , Sesquiterpenos/farmacologia
13.
Data Brief ; 25: 104246, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31384644

RESUMO

In this article we present the correlations observed in the NOESY spectra, which provide direct and unequivocal detection of hydroxyl groups occurring in the chemical structures of three sesquiterpene lactones - a germacranolide (8α-(E)-4'-hydroxysenecioyloxy-9α-hydroxyparthenolide) and two guaianolides (cynaropicrin and desacylcynaropicrin 8α-(Z)-(4'-hydroxy-2'-methyl)butenoate). The NOESY spectra and other NMR spectra, which served for the structural determination, are also presented. The data provided in this article are associated with the research article "Phytochemical profiles of the leaves of Stizolophus balsamita and Psephellus sibiricus and their chemotaxonomic implications" Nawrot et al., 2019.

14.
Phytochemistry ; 159: 172-178, 2019 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-30634079

RESUMO

Seven germacranolides - balsamin, izospiciformin, stizolin, 9α-hydroxyparthenolide, 8α-E-(4'-hydroxy)-senecioyloxy-9α-hydroxyparthenolide, stizolicin and 11ßH,13-dihydrostizolicin, as well as one undescribed phenol glycoside 3-(3,4-dihydroxyphenyl) propyl senecioate 3-O-ß-glucopyranoside were isolated from the leaves of Stizolophus balsamita growing in Iran. Three coumarins, scoparone, scopoletin, umbelliferone and two guaianolides, cynaropicrin and desacylcynaropicrin 8α-(Z)-(4'-hydroxy-2'-methyl)butenoate (= cebellin F) were isolated from the leaves of Psephellus sibiricus. Phytochemical profile of Stizolophus balsamita growing in Iran differs from that of Stizolophus balsamita growing in Kazakhstan. Therefore, the taxonomic separation of Stizolophus balsamita from Iran is suggested. The results also suggest that isolated coumarins may be a chemotaxonomic marker of the Psephellus species. Moreover, the presence of germacranolides in Centaureinae species with stout apical spine ended bracts of flower (S. balsamita) and guaianolides in other species with appendages of the bracts without apical spine (P. sibiricus) suggests a possible connection between the chemical structure of the sesquiterpene lactones and morphology of flowers in the species of the Centaureinae subtribe. In addition, we propose a new 1H NMR approach for the detection of hydroxyl groups in sesquiterpene lactones.


Assuntos
Asteraceae/química , Compostos Fitoquímicos/análise , Folhas de Planta/química , Asteraceae/classificação , Espectroscopia de Ressonância Magnética Nuclear de Carbono-13/métodos , Extratos Vegetais/química , Espectroscopia de Prótons por Ressonância Magnética/métodos , Espectrometria de Massas por Ionização por Electrospray/métodos
15.
J Cosmet Dermatol ; 14(3): 185-90, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26119285

RESUMO

BACKGROUND: Arbutin is one of the most effective lightening substances. Serratula quinquefolia is a new source of its ß-anomer. The HPLC method showed that the solid content of this compound in the dried plant raw material accounts for 6.86%. The leaves of Serratula quinquefolia do not contain hydroquinone. AIMS: To assess the efficacy of the aqueous extract from' leaf of five-leaf serratula as a skin-lightening agent. PATIENTS/METHODS: We did a randomized, placebo-controlled, double-blind trial. The study involved 102 women aged 26-55, with two kinds of hyperpigmentary diseases: melasma and lentigo solaris. Patients were randomly assigned to one of the treatment groups: a study group (N = 54) or a control group (N = 48). The study group applied the cream with the aqueous extract from leaf of five-leaf serratula containing 2.51% of arbutin. The cream was applied twice a day on the discolored side for 8 weeks. RESULTS: The experimental data showed that the cream with the extract causes decreased level of melanin in the skin pigmentation spot. Clinical effect in the form of lightening and evening skin tone on the discolored side was observed in 75.86% of the female patients with melasma and 56.00 % of the female patients with lentigo solaris. CONCLUSIONS: The cream with the aqueous extract from leaf of five-leaf serratula proved to be an effective and safe preparation for lightening skin discolorations (66.67 % of the female patients in the study group).


Assuntos
Arbutina/uso terapêutico , Asteraceae , Lentigo/tratamento farmacológico , Melanose/tratamento farmacológico , Extratos Vegetais/uso terapêutico , Preparações Clareadoras de Pele/uso terapêutico , Adulto , Arbutina/análise , Método Duplo-Cego , Feminino , Humanos , Lentigo/metabolismo , Melaninas/metabolismo , Melanose/metabolismo , Pessoa de Meia-Idade , Folhas de Planta/química , Creme para a Pele/uso terapêutico
16.
Ann Agric Environ Med ; 19(2): 327-8, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22742809

RESUMO

Heracleum Sosnowskyi was discovered in 1772 and described as a separate species in 1944 by I. P. Mandenova. Its name is derived from the surname of a botanist studying Caucasian flora, Prof. D.I. Sosnowski. In the area of the Caucasus foothills, the plant reaches approximately 1-1,5 m in height, whereas in Poland its size is significantly larger, up to 3-3.5 m. Heracleum blooms from mid-June to the end of July. The flowers are arranged in umbels and last for 2-3 weeks. In Central Europe, the species colonizes mostly neglected green areas, ruins and riversides. Heracleum poses a serious threat to the human population due to its photoallergic properties, resulting from the presence of intensely toxic furanocoumarin in its sap. Furanocoumarins are found in small hairs that cover the leaves and stem, and are the components of the essential oil. They may penetrate the skin through the epithelial layer, posing a direct threat to human health. Contact with the plant, followed by sun exposure, may lead to the development of large blisters and symptoms of burns. Heracleum, in the event of consumption, is also harmful to farm animals, causing, among others, internal bleeding and diarrhea. Although the toxic properties of Heracleum have been known for many years, every summer people who had contact with the plant present at physicians of different medical specialties.


Assuntos
Alérgenos/toxicidade , Furocumarinas/toxicidade , Heracleum/crescimento & desenvolvimento , Heracleum/toxicidade , Óleos Voláteis/toxicidade , Alérgenos/química , Dermatite Fotoalérgica/etiologia , Dermatite Fotoalérgica/patologia , Dermatite Fotoalérgica/fisiopatologia , Dermatite Fotoalérgica/veterinária , Furocumarinas/química , Furocumarinas/imunologia , Heracleum/imunologia , Óleos Voláteis/química , Folhas de Planta/química , Folhas de Planta/toxicidade , Caules de Planta/química , Caules de Planta/toxicidade , Polônia
17.
Przegl Lek ; 69(10): 987-91, 2012.
Artigo em Polonês | MEDLINE | ID: mdl-23421076

RESUMO

The aim of this study was to develop and validate the method of cynarin and luteolin, the main constituents of artichoke (Cynara scolymus L.) leaf extract, determination in plasma. The compounds were separated using the high-performance liquid chromatography technique with diode array detection (HPLC-DAD). The analysis was preceded by liquid-liquid extraction using as the extracting agent ethyl acetate. The HPLC separation was performed on C18 column under gradient conditions using a mobile phase - 0,05% trifluoroacetic acid in water and methanol. The detector was set at lambda=330 nm. The validation was related to linearity, sensitivity (LOD and LOQ), accuracy and repeatability. In the validated method the linearity was achieved within concentration range 1,5625 - 50,0 microg/cm3 for the cynarin (R2=0,9989) and 1,5625 - 200,0 microg/cm3 for the luteolin (R2=0998). The limits of detection for cynarin and luteolin was: 0,75 microg/cm3 and 0,1 microg/cm3 and the limits of quatification: 2,25 microg/cm3 and 0,2 microg/cm3, respectively. Coefficient of variation for the inter-day and the intra-day analysis, which is a precision and accuracy parameter, do not exceed 10%. Recovery was 67% for the cynarin and 96% for the luteolin. The practical application of this method was proved by analysis of plasma samples from rats. The animals were administrated artichoke leaf extract - orally and intraperitoneally at a dose of 3 g/kg body weight or pure substances - intraperitoneally at a dose 1 mg/kg of luteolin and 0,5 mg/kg of cynarin. The presence of investigated compounds was proved only in samples after intraperitoneal administration of pure substances. The developed method is used to determine simultaneously cynarin and luteolin, after intraperitoneal administration of pure compounds.


Assuntos
Cromatografia Líquida de Alta Pressão/normas , Cinamatos/sangue , Cynara scolymus , Luteolina/sangue , Extratos Vegetais/sangue , Plasma/química , Administração Oral , Animais , Cinamatos/administração & dosagem , Cynara scolymus/química , Injeções Intraperitoneais , Luteolina/administração & dosagem , Extratos Vegetais/administração & dosagem , Ratos , Ratos Sprague-Dawley , Reprodutibilidade dos Testes
18.
Przegl Lek ; 69(10): 1111-4, 2012.
Artigo em Polonês | MEDLINE | ID: mdl-23421102

RESUMO

Presently cigarette smoking is one of the most dangerous activities for health and human life. In tobacco smoke, nicotine and other dangerous substances have detrimental influence not only for smokers but for the "passive smokers" whom very often are children. Cigarette smoke causes unfavorable skin changes or intensifies course of many skin diseases including cancer. Tobacco smoke additionally quickens the natural process of skin aging. It has been observed that the skin of smoking addicts at the age of 40 years resembles skin of non-smoking 70 year old adults. Skin damage due to tobacco smoke is irreversible, where further damage can be avoided by stopping smoking. Present trends try to find ways to stop or at least delay changes caused by aging. Perhaps maybe it's first signs- wrinkles- more than the deadly consequences of smoking will be the most motivating reason for smokers to "kick the habit".


Assuntos
Envelhecimento da Pele/efeitos dos fármacos , Fumar/efeitos adversos , Poluição por Fumaça de Tabaco/efeitos adversos , Adulto , Criança , Humanos , Nicotina/toxicidade , Neoplasias Cutâneas/etiologia , Prevenção do Hábito de Fumar
19.
Przegl Lek ; 69(10): 1122-6, 2012.
Artigo em Polonês | MEDLINE | ID: mdl-23421105

RESUMO

The liver is the gland most vulnerable to the toxic effects of xenobiotics, as responsible for their metabolism. Significant impact on the functioning of this gland has a style of life: alcohol consumption, diet with high fats ingredients and prooxidative substances and synthetic drugs. Very improtant aspect in herbal medicaments is protective properties on parenchymal organ-damaging. Concomitant intake of plant extracts containing cytoprotective compounds, may increase the efficacy of treatment and reduce side effects. One of the plants of the hepatoprotective action is artichoke (Cynara scolymus L.). Artichoke with multiple therapeutic properties and practically no side effects is recommended not only in disorders of the liver, but also in the prevention of atherosclerosis and hyperlipidemia or dyspeptic disorders.


Assuntos
Cynara scolymus/química , Fígado/efeitos dos fármacos , Fitoterapia , Extratos Vegetais/farmacologia , Substâncias Protetoras/farmacologia , Aterosclerose/prevenção & controle , Cromatografia Líquida de Alta Pressão , Dispepsia/prevenção & controle , Humanos , Hiperlipidemias/prevenção & controle , Hepatopatias/tratamento farmacológico , Estrutura Molecular , Extratos Vegetais/química , Extratos Vegetais/isolamento & purificação , Extratos Vegetais/uso terapêutico , Substâncias Protetoras/química , Substâncias Protetoras/isolamento & purificação , Substâncias Protetoras/uso terapêutico
20.
Z Naturforsch C J Biosci ; 58(11-12): 793-6, 2003.
Artigo em Inglês | MEDLINE | ID: mdl-14713152

RESUMO

From the aerial parts of Santolina pinnata subsp. neapolitana, one new and four known germacrane derivatives were isolated. The new compound was characterized as 1alpha,10beta-epoxy-7alphaH-germacr-4(15)-ene-2/beta5alpha,6beta-triol by spectral methods.


Assuntos
Asteraceae/química , Sesquiterpenos de Germacrano/química , Espectroscopia de Ressonância Magnética , Modelos Moleculares , Conformação Molecular , Sesquiterpenos de Germacrano/isolamento & purificação
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