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1.
J Ethnopharmacol ; 322: 117557, 2024 Mar 25.
Artículo en Inglés | MEDLINE | ID: mdl-38072291

RESUMEN

ETHNOPHARMACOLOGICAL RELEVANCE: In Morocco carob fruits are used traditionally to treat hypercholesterolemia, diabetes and related diseases. AIMS: This study was designed to evaluate the hypolipidemic activity of Ceratonia siliqua green pods extract and its fractions in Triton WR-1339 and high fat/cholesterol diet (HFCD) induced hyperlipidemia mice, as well as their ability to prevent lipoproteins oxidation in vitro. MATERIALS AND METHODS: High performance liquid chromatography (HPLC) analysis was used to determine the phenolic composition of the immature carob pods extract (HWCE). Antioxidant activities were evaluated using the DPPH radical scavenging test as well as MDA measurement in oxidized lipoprotein rich plasma. Plasma lipids, glucose and biliary total cholesterol, as well as lipids level in liver and feces, were analyzed. The acute oral toxicity was performed in mice single dosed with the HWCE at 2000 and 5000 mg/kg body weight. RESULTS: HPLC analysis shows that gallic acid is the main phenolic compound in the HWCE. The acute oral toxicity assessment revealed that the HWCE is not toxic (LD50 is greater than 5000 mg/kg body weight). In the acute hypolipidemic study, mice treated with the HWCE and its fractions exhibited a significant (P < 0.001) reduction in plasma total cholesterol (TC), triglycerides (TG) and low density lipoprotein-cholesterol (LDL-C) levels. Importantly, immature carob aqueous extract was more effective in lowering mice hypercholesterolemia than its fractions. Indeed, mice fed the HFCD for 12 weeks showed a significant raise in plasma TC, TG and LDL-C, as well as in hepatic and fecal TC and TG levels. The HWCE at 100 and 200 mg/kg body weight significantly (P < 0.001) reversed the plasmatic levels of these lipid parameters, increased plasma HDL-C level, reduced hepatic lipids accumulation, but increased cholesterol level in the bile and fecal lipids excretion. The HWCE decreased also the atherogenic index, the LDL-C/HDL-C ratio and plasma glucose level after 12 weeks' experiment. On the other hand, the HWCE was more effective in preventing mice lipoprotein-rich plasma oxidation than its fractions, with a concentration-dependent manner. CONCLUSION: C. siliqua green fruits extract could be effective in preventing atherosclerosis and related cardiovascular complications through the inhibition of lipoprotein oxidation and cholesterol clearance.


Asunto(s)
Aterosclerosis , Fabaceae , Galactanos , Hipercolesterolemia , Hiperlipidemias , Mananos , Gomas de Plantas , Ratones , Animales , Hipercolesterolemia/tratamiento farmacológico , Hipercolesterolemia/etiología , LDL-Colesterol , Extractos Vegetales/farmacología , Extractos Vegetales/uso terapéutico , Extractos Vegetales/química , Metabolismo de los Lípidos , Hiperlipidemias/tratamiento farmacológico , Triglicéridos/metabolismo , Hígado , Lipoproteínas , Aterosclerosis/tratamiento farmacológico , Peso Corporal , Fitoquímicos/farmacología , Fitoquímicos/uso terapéutico , Fitoquímicos/metabolismo
2.
ACS Omega ; 8(30): 26715-26724, 2023 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-37546676

RESUMEN

Zingiber officinale and Citrus limon, well known as ginger and lemon, are two vegetals widely used in traditional medicine and the culinary field. The juices of the two vegetals were evaluated based on their inflammation, both in vivo and in vitro. High-performance liquid chromatography (HPLC) was used to characterize different juices from Zingiber officinale Roscoe and Citrus limon. After the application of the HPLC method, different compounds were identified, such as 6-gingerol and 6-gingediol from the ginger juice and isorhamnetin and hesperidin from the lemon juice. In addition, the two juices and their formulation were assessed for their anti-inflammatory activity, in vitro by utilizing the BSA denaturation test, in vivo using the carrageenan-induced inflammation test, and the vascular permeability test. Important and statistically significant anti-inflammatory activities were observed for all juices, especially the formulation. The results of our work showed clearly that the Zingiber officinale and Citrus limon juices protect in vivo the development of the rat paw edema, especially the formulation F composed of the Zingiber officinale and Citrus limon juices, which shows an anti-inflammatory activity equal to -35.95% and -44.05% using 10 and 20 mg/kg of the dose, respectively. Our work also showed that the formulation was the most effective tested extract since it inhibits the vascular permeability by -37% and -44% at the doses of 200 and 400 mg/kg, respectively, and in vitro via the inhibition of the denaturation of BSA by giving a synergetic effect with the highest IC50 equal to 684.61 ± 7.62 µg/mL corresponding to the formulation F. This work aims to develop nutraceutical preparations in the future and furnishes the support for a new investigation into the activities of the various compounds found in Zingiber officinale Roscoe and Citrus limon.

3.
Food Funct ; 14(16): 7489-7505, 2023 Aug 14.
Artículo en Inglés | MEDLINE | ID: mdl-37498560

RESUMEN

Hyperlipidemia is the most well-known cause of metabolic complications and tissue toxicity such as liver steatosis, atherosclerosis and obesity. This study aims to evaluate the preventive effect of loquat fruit peel extract (PE) against tyloxapol-induced hyperlipidemia and related tissue lipotoxicity in mice. The in vivo study was conducted on mice injected daily with tyloxapol at 100 mg per kg B.W. and treated simultaneously with the PE at concentrations of 100 and 200 mg kg-1 or fenofibrate for 28 days. Plasma and tissue lipid biochemical analyses were undertaken using enzymatic methods. The antioxidative stress was revealed by measuring the malondialdehyde content and activities of superoxide dismutase and catalase as well as the scavenging activity against lipoperoxyl radicals. The PE significantly prevented oxidative stress and restored lipid metabolism, plasma glucose, body weight, organ relative mass and biomarkers of hepato-nephrotoxicity as well as the histological structure of the liver and kidneys. It contains five major polyphenols, namely, ferulic acid, caffeic acid, neochlorogenic acid, chlorogenic acid and quercetin. According to molecular docking analysis, these compounds and their circulating metabolites could interact with major proteins implicated in lipid metabolism and oxidative stress. Overall, the study suggests that PE could prevent hyperlipidemia and related toxic tissue complications.


Asunto(s)
Hiperlipidemias , Polifenoles , Ratones , Animales , Polifenoles/química , Hiperlipidemias/tratamiento farmacológico , Hiperlipidemias/prevención & control , Hiperlipidemias/metabolismo , Simulación del Acoplamiento Molecular , Extractos Vegetales/química , Hígado/metabolismo , Estrés Oxidativo , Antioxidantes/farmacología , Antioxidantes/metabolismo
4.
J Ethnopharmacol ; 310: 116376, 2023 Jun 28.
Artículo en Inglés | MEDLINE | ID: mdl-36918050

RESUMEN

ETHNOPHARMACOLOGICAL RELEVANCE: In Moroccan traditional medicine, fresh or dried loquat (Eriobotrya japonica (Thunb.) Lindl.) fruit peels infused in water and taken for 45 days are used as natural remedies against hypercholesterolemia, hyperglycemia and cardiovascular diseases. This is the first experimental study approving the folk medicinal use of loquat fruit peels originated from eastern Morocco. AIM OF THE STUDY: The study aims to investigate the effect of loquat fruit peel extract on lipid metabolism and liver oxidative status in mice as well as to predict the possible mechanisms. MATERIALS AND METHODS: The study was carried out using high fat/fructose diet-induced hyperlipidemic mice model treated with the loquat peel extract for 45 days at two doses (100 and 200 mg/kg/day) in comparison to fenofibrate drug. The plasma, tissue, fecal and biliary lipids and blood glucose were analyzed using enzymatic methods. The liver oxidative status was evaluated and the polyphenol profiling was conducted using the HPLC-DAD method. Possible mechanisms involved in the observed pharmacological effects were predicted by in silico method. RESULTS: The extract at a dose of 200 mg/kg possessed higher effect than at 100 mg/kg. It significantly reduced plasma total cholesterol (TC), triglycerides (TG), LDL-cholesterol, atherogenic index, LDL-C/HDL-C ratio and plasma glucose (-36%, -45%, -45%, -82%, -87%, 58%, respectively), while the HDL-cholesterol was increased (+172%). Moreover, the extract reduced TC and TG in the liver and adipose tissue by increasing their excretion in bile and fecal matter. It prevented the liver oxidative stress and decreased body weight and organ relative mass. The extract appears to be nontoxic (LD50 > 5000 mg/kg) and contains five polyphenols including ferulic acid (32.74 ± 0.71 mg/g), caffeic acid (21.48 ± 0.32 mg/g), 5-O-Caffeoylquinic acid (112.15 ± 1.86 mg/g), chlorogenic acid (42.05 ± 0.92 mg/g) and quercetin (32.69 ± 0.68 mg/g). These phenolics and/or their circulating metabolites presented differential interaction capacities with the potential enzymes and transcription factors implicated in lipid homeostasis such as HMG-CoA reductase, lipoprotein lipase, fatty acid synthase, Cyp7a1, ABCG, PPARs, RXR, FXR and RAR. CONCLUSION: Our findings justify the traditional use of loquat fruit peels and suggest that their aqueous extract could be used as substrate to produce phytotherapeutic drugs or dietary supplements to prevent hyperlipidemia, hyperglycemia and related cardiovascular diseases.


Asunto(s)
Enfermedades Cardiovasculares , Eriobotrya , Hiperglucemia , Hiperlipidemias , Ratones , Animales , Frutas/metabolismo , Metabolismo de los Lípidos , Hígado , Estrés Oxidativo , Hiperlipidemias/tratamiento farmacológico , Triglicéridos/metabolismo , Polifenoles/farmacología , HDL-Colesterol , Hiperglucemia/metabolismo
5.
J Food Biochem ; 46(9): e14225, 2022 09.
Artículo en Inglés | MEDLINE | ID: mdl-35575425

RESUMEN

Thymus atlanticus has been used by Moroccan people to treat a variety of health problems, particularly metabolic disorders. In this study, hamsters fed a high-fat diet daily received distilled water (a positive control) or a single dose of Thymus atlanticus polyphenols (Pp) for 63 days. The negative control was fed a normal diet and received distilled water. Results showed that the supplementation of HFD with Pp significantly (p < .001) reduced the levels of MDA and LDL cholesterol, restored insulin level, and increased the activities of serum paraoxonase-1 and HDL cholesterol levels, but did not affect (p > .05) the activity of superoxide dismutase and glutathione peroxidase when compared with the group feeding HFD alone. Thymus atlanticus could be an effective agent against dyslipidemia, oxidative stress, and insulin resistance. PRACTICAL APPLICATIONS: HFD consumption is a risk factor for oxidative stress and the development of metabolic disorders, such as hyperlipidemia and insulin resistance, which may result in atherosclerosis and related cardiovascular diseases, the leading causes of death globally. The management of these alterations is an important strategy to prevent and treat heart complications. Our results showed thatT. atlanticus effectively alleviated HFD-induced hyperlipidemia and insulin resistance and improved PON1 activity. T. atlanticus is a source of biomolecules that may be an effective supplement for controlling HFD-related metabolic disorders. Therefore, the findings of this study may be helpful in the preparation of effective supplements from T. atlanticus to control metabolic disorders and related complications.


Asunto(s)
Arildialquilfosfatasa , Hiperlipidemias , Resistencia a la Insulina , Extractos Vegetales , Polifenoles , Animales , Arildialquilfosfatasa/metabolismo , Cricetinae , Dieta Alta en Grasa/efectos adversos , Suplementos Dietéticos , Hiperlipidemias/metabolismo , Lípidos , Hígado , Extractos Vegetales/farmacología , Polifenoles/farmacología , Thymus (Planta)/química
6.
Artículo en Inglés | MEDLINE | ID: mdl-33603821

RESUMEN

Exposure to carbon tetrachloride (CCl4) induces acute and chronic liver injuries as well as oxidative stress in rats. The present study was designed to evaluate the in vivo toxicity of rosmarinic acid-rich extract from Ocimum basilicum (RAE). The acute and subchronic oral toxicity of RAE was evaluated in Albinos mice. Hepatotoxicity was induced by the administration of CCl4-induced hepatic injury in rats. The hepatoprotective effect of RAE on aspartate aminotransferase, alanine transaminase, alkaline phosphatase, lactate dehydrogenase, bilirubin, total protein, albumin, triglycerides, total cholesterol, low-density lipoprotein, high-density lipoprotein, plasmatic glucose, urea, creatinine, and malondialdehyde was determined in CCl4-intoxicated rat. The extract did not produce treatment-related signs of toxicity or mortality in any of the animals tested during acute as well as subchronic toxicity studies. The administration of CCl4 resulted in marked increase in plasma hepatic enzymes (p < 0.001) and significant decrease of total protein (p < 0.001) and albumin (p < 0.001) when compared to normal. The RAE at 200 mg/kg body weight lowered significantly (p < 0.001) plasma enzyme activities of liver, which is designation of hepatoprotective action of extract. The phenolic extract exerts a significant increase in total protein (p < 0.001), and albumin (p < 0.001), accompanied with a marked reduction in the levels of malondialdehyde (p < 0.001), as compared to CCl4-treated group. Our study suggests that RAE may be used as a hepatoprotective agent against toxic effects caused by CCl4 and other chemical agents in the liver.

7.
Artículo en Inglés | MEDLINE | ID: mdl-32308705

RESUMEN

Thymus atlanticus, an endemic plant of Morocco, is traditionally used as a liniment or a drink to treat various diseases. However, there are few available scientific data regarding its biological effects. In this connection, the present study aimed to investigate the hypolipidemic and antioxidant effects of aqueous extract and polyphenol fraction of Thymus atlanticus in Syrian golden hamsters treated with Triton WR-1339 (triton, 20 mg/100 g body weight). The hamsters orally received the extracts (400 mg/kg), and blood samples were collected after 24 h of treatment to determine plasma lipid, insulin, and fasting blood glucose levels. Plasma malondialdehyde level and plasma total antioxidant (TAS) were also evaluated. The T. atlanticus extracts significantly decreased triglycerides, total cholesterol, VLDL-C, and LDL-C and increased HDL-C when compared with the hyperlipidemic group. Both extracts suppressed the effect of the triton injection on TAS and reduced the level of plasma malondialdehyde. The extracts produced no significant change in the blood glucose level but effectively prevented the mild hyperinsulinemia induced by triton. These findings suggest that T. atlanticus may be a useful alternative treatment for the control of hyperlipidemia and its related diseases.

8.
J Ethnopharmacol ; 252: 112475, 2020 Apr 24.
Artículo en Inglés | MEDLINE | ID: mdl-31843575

RESUMEN

ETHNOPHARMACOLOGICAL EVIDENCE: Thymus atlanticus (TA) is used in traditional medicine in Morocco to treat chronic inflammatory diseases, after local and oral treatment. AIM OF STUDY: This study aimed to investigate the in vitro and in vivo anti-inflammatory and anticoagulant activities of an aqueous extract (AE) and polyphenol fraction (PF) derived from TA. MATERIALS AND METHODS: The effect of AE and PF on monocyte chemoattractant protein-1 (MCP-1) production by naïve and LPS-stimulated peritoneal macrophages isolated from C57Bl/6 mice was assessed by ELISA assay. The effect of chronic administration of the extracts at three different doses by oral rout for 2 weeks on blood coagulation and inflammation induced by carrageenan in Wistar rats was evaluated. In addition, the in vitro anticoagulant effect was tested on blood plasma collected from healthy rats using the activated partial thromboplastin time (APTT), prothrombin time (PT) and thrombin time (TT) tests. The acute toxicity of AE was investigated. Phytochemical analysis was carried out by HPLC. RESULTS: Analysis by HPLC indicated rosmarinic acid as the main phenolic acid in TA extracts. Compared to control macrophages, MCP-1 level was lower in medium supplemented with AE at 50 and 500 µg/mL and PF at 500 µg/mL, but higher in medium with PF at 50 µg/mL. Rosmarinic and chicoric acids, served as controls, significantly decreased MCP-1 production. Chronic oral administration of TA extracts prevented inflammation induced by carrageenan and induced a significant prolongation of blood coagulation time, in a dose dependant manner, in Wistar rats. The results of the in vitro assay showed that the coagulation time was significantly prolonged in plasma incubated with extracts in APTT, PT and TT tests. Lethal dose 50 of AE in mice was 27.90 ± 1.19 g/kg. CONCLUSION: This study indicated TA as an herb with anti-inflammatory and anticoagulant proprieties and supports the traditional use of this plant for the treatment of inflammatory diseases.


Asunto(s)
Antiinflamatorios/uso terapéutico , Anticoagulantes/uso terapéutico , Extractos Vegetales/uso terapéutico , Polifenoles/uso terapéutico , Thymus (Planta) , Animales , Antiinflamatorios/farmacología , Antiinflamatorios/toxicidad , Anticoagulantes/farmacología , Anticoagulantes/toxicidad , Coagulación Sanguínea/efectos de los fármacos , Carragenina , Quimiocina CCL2/inmunología , Edema/inducido químicamente , Edema/tratamiento farmacológico , Femenino , Dosificación Letal Mediana , Lipopolisacáridos/farmacología , Macrófagos Peritoneales/efectos de los fármacos , Macrófagos Peritoneales/inmunología , Masculino , Medicina Tradicional , Ratones Endogámicos C57BL , Marruecos , Extractos Vegetales/farmacología , Extractos Vegetales/toxicidad , Polifenoles/farmacología , Polifenoles/toxicidad , Ratas Wistar
9.
Artículo en Inglés | MEDLINE | ID: mdl-31360211

RESUMEN

Over the past decades, cardiovascular diseases have become the leading cause of death all over the world, and among these diseases there is atherosclerosis caused mainly by an increase in plasmatic cholesterol levels and by strong oxidation caused by free radicals. For these reasons and others, we explored in this report the hypolipidemic and the antioxidant effects of Zingiber officinale crude aqueous and methanolic extract. The hypolipidemic study was carried out in high-fat-fed mice model. Animals were subdivided into four groups and were orally treated with the aqueous extract once daily for twelve weeks at two doses: 250 and 500 mg/Kg. During the treatment, the body weight, total cholesterol, triglycerides, and high-density lipoproteins have been defined every four weeks. The antioxidant activity has been studied using radical scavenging activity, ß-carotene bleaching, reducing power assay, and the TBARs tests. The daily oral administration of the extracts for twelve weeks significantly improved the lipid profile in a dose-dependent manner, from the first until the twelfth week, and also showed a significant antioxidant effect. These findings may be potentially contributive to the validation of the medicinal use of Z. officinale to treat hyperlipidemia and cardiovascular complications.

10.
Sci Pharm ; 80(2): 457-67, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-22896830

RESUMEN

Artemisia herba-alba Asso. is a shrub commonly encountered in Morocco. It is used in traditional medicine for treating intestinal disorders. The essential oil extracted from the plant's aerial parts reversibly relaxed the spontaneous tonus of the rabbit jejunum in a reversible concentration dependent manner with an IC(50) value of 97.33 ± 2.59 ng/ml and reversed the tonic contraction of rat jejunum induced by 75 mM KCl and 10(-6) M carbachol with IC(50) values of 115.5 ± 3.05 and 119.4 ± 20.86 ng/ml, respectively. The pre-treatment of the latter isolated intestine with this essential oil produced a dose-dependent shift of the Ca(++) and CCh dose-response curve to the right, with suppression of the maximal effect, similar to the non-competitive antagonist effect on muscarinic receptors and calcium channel, respectively.

11.
J Smooth Muscle Res ; 46(2): 119-23, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-20551592

RESUMEN

The anti-diarrhoeal effect of aqueous extract of Rubia tinctorum L. (Rubiaceae) roots in rodents was examined. At doses 300, 600 and 800 mg/kg aqueous extract protected rats, in a dose-dependent fashion, against castor oil-induced diarrhoeal dropping by 37, 59 and 64% respectively. Furthermore, it has significantly inhibited by 41% the gastrointestinal transit of charcoal in mice at 800 mg/kg dose of extract. These data suggest that Rubia tinctorum showed antidiarrhoeal activity by inhibiting intestinal motility which was concordant with its use in traditional medicine.


Asunto(s)
Antidiarreicos/farmacología , Antidiarreicos/uso terapéutico , Animales , Antidiarreicos/efectos adversos , Aceite de Ricino/efectos adversos , Aceite de Ricino/farmacología , Aceite de Ricino/uso terapéutico , Mezclas Complejas/efectos adversos , Mezclas Complejas/farmacología , Mezclas Complejas/uso terapéutico , Diarrea/inducido químicamente , Diarrea/tratamiento farmacológico , Femenino , Motilidad Gastrointestinal/efectos de los fármacos , Tránsito Gastrointestinal/efectos de los fármacos , Loperamida/efectos adversos , Loperamida/farmacología , Loperamida/uso terapéutico , Masculino , Ratones , Raíces de Plantas/química , Ratas , Ratas Wistar , Roedores , Rubia/química , Rubiaceae/efectos de los fármacos , Agua/efectos adversos , Agua/farmacología
12.
J Smooth Muscle Res ; 46(1): 65-75, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-20383035

RESUMEN

The aim of the present study is to determine the chemical composition of the essential oil extracted from the flowers of Anthemis mauritiana Maire & Sennen (EOAM) and to investigate its antispasmodic effects on intestinal smooth muscle. The phytochemical composition was revealed by gas chromatography-mass spectrometer. Eighteen compounds were identified representing 90.56% of the oil. The major constituents were described as alpha-pinene (27.02%), sabinene (15.25%), cedrenol (14.53%) germacrene (9.61%) geraniol formate (6.82%), and caryophylene (5.38%). EOAM (10-100 microg/ml) elicited reversible relaxation of spontaneous contractions of isolated rabbit jejunal smooth muscle preparations, and similarly inhibited contractions induced by high-potassium solution ([K(+)](o) = 76 mM) and carbachol (10(-6) M) with IC(50) values of 14.98 and 27.29 microg/ml, respectively. Furthermore, EOAM exhibited an inhibitory effect on the dose-response curves induced by carbachol and CaCl(2) on rat jejunum preparations. These results clearly demonstrated the antispasmodic effect of EOAM which was strongly suggested to be mainly due to an inhibitory effect on Ca(2+) influx through the membrane of jejunal smooth muscle cells.


Asunto(s)
Anthemis/química , Yeyuno/efectos de los fármacos , Contracción Muscular/efectos de los fármacos , Músculo Liso/efectos de los fármacos , Aceites Volátiles/farmacología , Parasimpatolíticos/farmacología , Animales , Flores/química , Técnicas In Vitro , Aceites Volátiles/química , Parasimpatolíticos/análisis , Extractos Vegetales/química , Extractos Vegetales/farmacología , Aceites de Plantas/química , Aceites de Plantas/farmacología , Conejos , Ratas , Ratas Wistar
13.
J Ethnopharmacol ; 125(1): 157-62, 2009 Aug 17.
Artículo en Inglés | MEDLINE | ID: mdl-19505553

RESUMEN

AIM OF THE STUDY: In this work the endothelium-dependant vasorelaxant and anti-platelet aggregation activities of an aqueous extract from Ocimum basilicum were studied. MATERIALS AND METHODS: The vasorelaxant effect was undertaken in thoracic aorta from three experimental groups of rats: one of them (NCG) fed with standard diet, the second (HCG) with hypercholesterolemic diet (HCD) and the third (BTG) with hypercholesterolemic diet together with an intragastric administration of Ocimum basilicum extract at a dose of 0.5 g/kg body weight for a period of 10 weeks. The in vitro anti-platelet aggregation of Ocimum basilicum extract was studied using thrombin (0.5 U/ml) and ADP (5 microM) as agonists. RESULTS: The results show that the HCD statistically decreases vascular relaxation in HCG compared to NCG (p<0.001) and increases the vascular responses to phenylephrine (p<0.02). Ocimum basilicum extract exerts a significant vasorelaxant effect at 10(-5) M (p<0.01) and 10(-4) M carbachol (p=0.001). The plant extract also tends to suppress the elevated contractions induced by HCD (p=0.05). The extract inhibits ADP-induced platelet aggregation by 13%, 28.2%, 30.5%, 44.7% and 53% at a dose of 1, 2, 3, 4 and 5 g/l, respectively. Thrombin-induced platelet activation was also reduced by 15%, 23%, 40%, 38.4%, and 42% at the same doses of extract described above. CONCLUSION: The use of Ocimum basilicum as medicinal plant could be beneficial for cardiovascular system.


Asunto(s)
Ocimum basilicum/química , Extractos Vegetales/farmacología , Inhibidores de Agregación Plaquetaria/farmacología , Vasodilatadores/farmacología , Animales , Cromatografía Líquida de Alta Presión , Femenino , Ratas , Ratas Wistar , Agua
14.
Fitoterapia ; 79(7-8): 515-23, 2008 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-18620033

RESUMEN

Macrophage lipid accumulation induced by low density lipoproteins (LDL) plays a pivotal role in atherosclerotic plaque development. Previous work showed that Ocimum basilicum extract, used as hypocholesterolemic agent by traditional medicine in Morocco, has hypolipidemic activity in rat acute hyperlipimidemia. This study investigated the effects of ethanolic extract of O. basilicum on lipid accumulation in human macrophages. As modification of LDL increase atherogenicity of the particles we evaluated the effects of the extract on LDL oxidation. The extract caused a dose-related increase of LDL-resistance to Cu(2+)-induced oxidation. Furthermore, at the dose of 60 microg/ml, significantly decreases the accumulation of macrophage lipid droplets induced by modified LDL evaluated as by red-oil staining. Cholesterol esterification and triacylglycerol synthesis in the cells were not affected. Macrophage treatment with 60 microg/ml, but not 20 microg/ml, of the extract reduced newly synthesized unesterified cholesterol by about 60% and decreased scavenger receptors activity by about 20-30%, evaluated by the internalization of cholesterol carried by [(3)H]CE-aggregated-LDL. The results suggest that O. basilicum ethanolic extract has the capability to reduce foam cell formation through the reduction of cholesterol synthesis and the modulation of the activity of surface scavenger receptors.


Asunto(s)
Colesterol/biosíntesis , Células Espumosas/efectos de los fármacos , Hipolipemiantes/farmacología , Lípidos/biosíntesis , Lipoproteínas LDL/metabolismo , Macrófagos/metabolismo , Ocimum basilicum/química , Extractos Vegetales/farmacología , Aterosclerosis/prevención & control , Supervivencia Celular/efectos de los fármacos , Cobre/metabolismo , Células Espumosas/metabolismo , Humanos , Lipoproteínas LDL/aislamiento & purificación , Ácido Oléico/metabolismo , Oxidación-Reducción/efectos de los fármacos , Componentes Aéreos de las Plantas , Extractos Vegetales/aislamiento & purificación , Proteínas/análisis , Receptores Depuradores/metabolismo , Triglicéridos/metabolismo
15.
J Ethnopharmacol ; 109(1): 156-60, 2007 Jan 03.
Artículo en Inglés | MEDLINE | ID: mdl-17092671

RESUMEN

In the present study, an aqueous extract from Erica multiflora L. (Ericaceae) flowers was evaluated for its hypocholesterolaemic and hypotriglyceridaemic activities using Triton WR-1339 induced hyperlipemic rats as experimental model. Hyperlipideamia was developed by intraperitonial injection of Triton (200mg/kg body weight). The animals were divided into control (CG), hyperlipidaemic (HG), hyperlipidaemic plus herb extract (HG+EmE) and hyperlipidaemic plus fenofibrate (HG+FF) treated groups. Intragastric administration of Erica multiflora extract (0.25 g/100g body weight) to the rats caused a significant decrease on their plasma lipid levels (quantified using enzymatic kits). At 7h after treatment, plasma total cholesterol, triglycerides and LDL-cholesterol were decreased by 47%, 95% and 67%, respectively, but the change of HDL-cholesterol level was not significant. However, the hypolipidaemic effect of fenofibrate was limited to triglycerides and LDL-cholesterol, which were lowered by about 92% and 41%, respectively. At 24h after treatment, Erica multiflora extract reduced plasma total cholesterol by 68.5% and triglycerides by 91%. HDL-cholesterol was not significantly increased and LDL-cholesterol was lowered by 80.5%. In fenofibrate treated rats, only plasma triglyceride concentrations were lowered by 82%, while the other lipid parameters were not significantly changed indicating that this aqueous herb extract may contain products that lower plasma lipid concentrations and might be beneficial in treatment of hyperlipideamia.


Asunto(s)
Ericaceae/química , Fenofibrato/farmacología , Hipolipemiantes/farmacología , Animales , Colesterol/sangre , Excipientes , Femenino , Flavonoides/química , Flavonoides/aislamiento & purificación , Flavonoides/farmacología , Flores/química , Hipolipemiantes/química , Lípidos/sangre , Fenoles/química , Fenoles/aislamiento & purificación , Fenoles/farmacología , Extractos Vegetales/química , Extractos Vegetales/farmacología , Polietilenglicoles , Polifenoles , Proantocianidinas/química , Proantocianidinas/aislamiento & purificación , Proantocianidinas/farmacología , Ratas , Taninos/química , Taninos/aislamiento & purificación , Taninos/farmacología , Triglicéridos/sangre , Agua
16.
Phytother Res ; 20(12): 1040-5, 2006 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-17006976

RESUMEN

Hyperlipidaemia, atherosclerosis and related diseases are becoming a major health problem in developing countries. Ocimum basilicum is one of the medicinal plants widely used in Morocco to reduce plasma cholesterol and to reduce the risk of atherosclerosis-related diseases. However, mechanisms underlying the reported hypolipidaemic effect of this plant have not been investigated. This study evaluates the lipid lowering effect of aqueous Ocimum basilicum extract in Triton WR-1339-induced hyperlipidaemic rats. Hyperlipidaemia was developed in animals by intraperitoneal injection of Triton (200 mg/kg). After injection of Triton the animals were divided into three treatment groups: hyperlipidaemic, hyperlipidaemic plus herb extract and hyperlipidaemic plus fenofibrate treated rats. At 7 h after the Triton injection, levels of plasma cholesterol, triglycerides and LDL-cholesterol in rats treated also with the Ocimum basilicum extract (0.5 g/100 g body weight) were, respectively, 50%, 83% and 79% lower than Triton-treated rats and HDL-cholesterol was 129% higher than in rats given Triton alone. At 24 h following Ocimum basilicum administration, total cholesterol, triglycerides and LDL-cholesterol levels decreased by 56%, 63% and 68%, respectively, in comparison with the Triton treated group and HDL-cholesterol was not increased significantly. The hypolipidaemic effect exerted by Ocimum basilicum extract was markedly stronger than the effect induced by fenofibrate treatments. Further it was demonstrated that Ocimum basilicum aqueous extract displayed a very high antioxidant power. These results indicate that Ocimum basilicum extract may contain hypolipidaemic and antioxidant substances and its use as a therapeutic tool in hyperlipidaemic subjects may be of benefit and encourage further investigation in this field.


Asunto(s)
Hiperlipidemias/tratamiento farmacológico , Hipolipemiantes/farmacología , Ocimum basilicum/química , Extractos Vegetales/farmacología , Animales , Antioxidantes/análisis , HDL-Colesterol/efectos de los fármacos , LDL-Colesterol/efectos de los fármacos , Femenino , Fenofibrato/administración & dosificación , Fenofibrato/farmacología , Hiperlipidemias/inducido químicamente , Hipolipemiantes/administración & dosificación , Extractos Vegetales/administración & dosificación , Polietilenglicoles/administración & dosificación , Polietilenglicoles/farmacología , Ratas , Ratas Wistar
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