جستجوی مقالات مرتبط با کلیدواژه « hypolipidemic » در نشریات گروه « پزشکی »

Thiazolidinedione (TZD), being a privileged scaffold, has been known as a significant structural moiety of antidiabetic drugs. TZD has been known to improve glycaemic control in type 2 diabetes mellitus (T2DM) by increasing insulin sensitivity in the body. A novel series of 5-benzylidene 2,4-thiazolidinedione derivatives were designed, synthesized (V1-V28), and structurally confirmed by different spectroscopic techniques such as FTIR, 1H NMR, 13C NMR, and Mass spectrometry. Upon the safety assessment of the synthesized molecules in non-transformed hepatocytes by MTT reduction assay, these were found non-toxic. These derivatives were then further evaluated for their antihyperglycemic and antihyperlipidemic properties in a high-fat diet and low dose of streptozotocin-induced diabetic rats. Altogether, seven biochemical parameters were analyzed, namely blood glucose, triglycerides, cholesterol, creatinine, blood urea nitrogen, HDL-cholesterol, and glycosylated hemoglobin in serum by standard methods. Four synthetic molecules (V2, V4, V5, and V20) possessed significant hypoglycaemic and hypolipidemic activity as compared to the positive control pioglitazone. Moreover, the histopathological studies of the heart and liver revealed no significant toxicity. Two representative compounds V2 and V4, were evaluated for their PPARγ activation potential, demonstrating that they were partial PPARγ agonists, thus confirming our designing hypothesis. Based on the results obtained, we assume that these compounds have the potential to be developed as future antidiabetic agents.

Type 2 diabetes mellitus (T2DM) has several complications such as hyperlipidemia and hepatotoxicity. Myricitrin has an antidiabetic action along with low bioavailability. So, the aim of the present study was to investigate hypolipidemic and hepatoprotective effects of myricitrin and solid lipid nanoparticle (SLN) containing myricitrin on the T2DM mouse model induced by Streptozotocin-nicotinamide (STZ-NA).

In this experimental study, 90 Naval Medical Research Institute (NMRI) adult male mice were divided into 9 groups (n=10 per group): control, vehicle, diabetic, diabetic + myricitrin, or SLN containing myricitrin 1, 3, and 10 mg/kg groups. The cold homogenization method was used to prepare SLN containing myricitrin. The diabetic model was induced by one injection of STZ-NA (65-120 mg/kg) with a 15-min interval. Animals' treatment was done for 4 weeks. At the end of the experiment, plasma samples were taken for experimental assessments.

Plasma level of triglyceride (TG), low-density lipoprotein (LDL-C), very-low-density lipoprotein (VLDL), aspartate aminotransferase (AST), and alanine aminotransferase (ALT) increased and high-density lipoprotein cholesterol (HDL-C) decreased in diabetic mice compared to the control group (P<0.05). Administration of myricitrin or SLN containing myricitrin decreased plasma levels of TG, LDL-C, VLDL, AST, and ALT and increased HDL-C in the treated diabetic groups compared to the untreated groups (P<0.05).

According to the results, myricitrin and SLN containing myricitrin showed hypolipidemic and hepatoprotective effects in T2DM mice. Also, SLN containing myricitrin was more potent than myricitrin especially in a low dose of administration.

Chromolaena odorata (C. odorata) is a medicinal plant with hypoglycemic effect known in traditional medicine. The present study investigated the in vitro antioxidant and in vivo anti-hyperglycemic effect of the methanol root extract of C. odorata in rats.

Phytochemical compositions were evaluated, using standard procedures while the antioxidant activities were examined, using 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging and ferric reducing power (FRAP) assays. Twenty albino rats were administered 120 mg/kg of body weight (bw) alloxan and were divided into four groups of five animals each. Groups A to D were treated with 2 ml/kg of normal saline, 300 mg/kg, 500 mg/kg bw extract and 5 mg/kg bw glibenclamide, respectively, through oral route for 14 days. Blood samples were collected and prepared for the analysis of serum lipids profile.

The extract contained tannins (54.76±4.08 mg/100 g), saponins (322.78±17.35 mg/100 g), glycosides, alkaloids (74.34±6.08 mg/100 g), flavonoids (79.63±4.55 mg/100 g), phenols (154.32±11.21 mg/100 g), glycosides, steroids and reducing sugar. The extract promoted the inhibition of DPPH radicals with IC50 values of 191.68±1.68 µg/mL. In comparison with the untreated controls, total cholesterol, Low Density Lipoprotein (LDL)-cholesterol and triglycerides were significantly reduced (P<0.05) following treatment with C. odorata extract while high density lipoprotein (HDL)-cholesterol, was significantly increased. 

The C. odorata extract exhibited antioxidant and hypolipidemic effects in alloxan-induced diabetic rat, thus could be considered as a natural product in the management of dyslipidemia secondary to diabetes.

Effects of Commiphora mukul and Commiphora myrrha ethanolic extracts and Terminalia chebula hydro-ethanolic extract combination were evaluated in streptozotocin (STZ)-induced diabetic rats. Male Wistar rats (n=48) were randomly assigned into: control; diabetic; diabetic+metformin (300 mg/kg); diabetic+dose 1 of herbal combination (438 mg/kg of C. mukul+214 mg/kg of C. myrrha+857 mg/kg of T. chebula); diabetic+dose 2 (642 mg/kg of C. mukul+214 mg/kg of C. myrrha+642 mg/kg of T. chebula); and diabetic+dose 3 (857 mg/kg of C. mukul+438 mg/kg of C. myrrha+1714 mg/kg t of T. chebula). All treatments were given orally by gavage. Diabetes was induced by STZ (60 mg/kg, i.p.). At the end of study (day 28), blood glucose, insulin and lipid profile; as well as hepatic malondialdehyde (MDA) and thiol content, and superoxide dismutase (SOD) and catalase (CAT) activities were determined. In diabetic rats, plasma glucose, triglycerides (TG), total cholesterol (TC), and LDL-C, as well as hepatic MDA levels were elevated but plasma HDL-C and insulin, and hepatic thiol content and SOD and CAT activities were reduced compared to control (p<0.01-p<0.001). In diabetic+dose 3, plasma TC, TG, and LDL-C and hepatic MDA level decreased (p<0.001), while plasma HDL-C and insulin, and hepatic thiol content, and SOD and CAT activities increased compared to diabetic (p<0.01-p<0.001). Treatment with dose 1 and 2 improved such abnormalities in diabetic rats except for insulin level (p<0.05-p<0.001). The herbal combination effects were comparable to those of metformin. Metformin did not significantly change serum insulin and HDL-C levels, and hepatic SOD activity; however, serum levels of TC, TG, and LDL-C, as well as hepatic MDA levels, thiol content and CAT activity were improved compared to diabetic (p<0.05-p<0.001). These results indicate that this herbal combination acts as an anti-diabetic, antioxidant and hypolipidemic agent and it may be suggested as a beneficial remedy for diabetic patients.

This study was designed in order to correlate the flavonoid and lipoidal matters content of Spinach roots and flowers to their hypolipidemic potential.
The total flavonoid content was measured via complexation with aluminum chloride while determination of fatty acids methyl esters and unsaponifiable matters contents in both organs was performed using GC/MS. In an in vitro study, the crude ethanol extracts of both organs and their different fractions were separately examined for inhibition of β-hydroxy-β-methyl glutaryl coenzyme A reductase (HMGCoA reductase); the rate limiting enzyme of cholesterol biosynthesis.
The percentage inhibition of alcohol extracts of roots and flowers were 78.19% and 72.68% respectively when compared to the control. The crude alcohol extracts of both organs were further examined in vivo. Results showed that both extracts improved the investigated parameters by variable degrees compared to fenofibrate reference drug. The root extract showed significant improvement of TC, HDL-C, LDL-C, TG and total lipids (52.75, 209.85, 21.84, 49.26 and 29.62% respectively) when compared to hypercholesterolemic rats. The histopathological picture of liver showed a noticeable amelioration after treatment with root extract. The flavonoid content was higher in flower than root (983.4 and 300.2 mg/kg respectively) while the percentage of sterols and triterpenes in roots was greater than flowers (27.87% and 20.45 % respectively).
In conclusion, the root ethanolic extract recorded more potent activity than flower as hypolipidemic agent either in vitro or in vivo examination which was more correlated to the sterol content than to the flavonoid content.

Diabetes mellitus is associated with complications in several different systems of the body, and the incidence of diabetes is rapidly increasing worldwide. The objective of the present study was to evaluate the effect of aqueous extract of Cydonia oblonga Mill. Fruit on lipid profile and some biochemical parameters in streptozotocin-induced diabetic rats. The extract showed anti hyper lipidemic activity as evidenced by significant decreases in serum triglyceride, total cholesterol, and low density lipoprotein cholesterol (LDL-C) levels along with the elevation of high density lipoprotein cholesterol (HDL-C) in the diabetic rats. The biochemical liver functional tests were also analyzed and it was shown that serum biomarkers of liver dysfunction, including alanine transaminase (ALT), aspartate transaminase (AST), and alkaline phosphatase (ALP) were significantly reduced in aqueous extract of Cydonia oblonga Mill. treated diabetic rats. In addition, our results showed that the oral administration of the extract prevented diabetes-induced increase in serum urea and creatinine levels as the markers of renal dysfunction. In conclusion, the present study indicates that aqueous extract of Cydonia oblonga Mill. Is able to improve some of the symptoms associated with diabetes and possesses hypolipidemic, hepatoprotective, and renoprotective effects in streptozotocin-induced diabetic rats.

Solenostemon monostachyus has remain invincible in Ibibio ethnomedicine for the management of numerous ailment including diabetes mellitus. Many of these ethnomedicinal claims are yet to be pharmacologically verified. The purpose of this study therefore was to subject the extract/fractions of Solenostemon monostachyus used in folkloric management of diabetes to scientific assay. Experimental: The crude extract and fractions of S. monostachyus (75 -225 mg/kg) were evaluated for antidiabetic activity in alloxan – induced diabetic rats. The antidiabetic activity during acute and prolong studies were investigated. Glibenclamide, 10 mg/kg, was used as positive control. The Blood Glucose Level (BGL) was measured by using a glucometer and the various lipids level were estimated using Randox diagnostic kits. Treatment of alloxan diabetic rats with the extract/fractions caused a significant (P<0.001) reductions in BGL of the diabetic rats both in acute and prolong treatment (2 weeks). The activities of extract and fractions were comparable to that of glibenclamide in prolonged study. S. monostachyus treatment showed considerable lowering of serum total cholesterol, triglycerides, LDL cholesterol, VLDL cholesterol and an increase in HDL cholesterol in the treated diabetic group. Industrial and practical recommendations: These results suggest that the extract of S. monostachyus possesses antidiabetic and hypolipidaemic effect on alloxan-induced diabetic rats which can be exploited in the management of diabetes.

Spices are now considered as agents that not only can prevent but may even treat chronic diseases. This study was aimed to investigate the effects of Allium hirtifolium as a hypolipidemic and anti-atherosclerotic substance in hypercholesterolemic rabbits. Twenty four adult New Zealand male rabbits were divided randomly into 3 groups of 8 animals each and treated for 60 days as follows. Normal group received basal feed, while the two intervention groups were fed with hypercholesterolemic diet (1% cholesterol) and hypercholesterolemic diet plus A. hirtifolium extract, respectively. At the start and the end of the experiment, fasting blood was taken from all animals. Serum concentrations of total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), triglycerides (TG), apolipoproteins A and B, serum glutamate oxaloacetate transaminase (SGOT), serum glutamate pyruvate transaminase (SGPT), high-sensitivity C-reactive protein (hs-CRP), glucose and insulin were measured at the end of supplementation period in all studied groups. Atherosclerotic plaque thickness of aorta to media was also determined in all groups. Rabbits fed only with high cholesterol diet showed increased atherosclerotic plaque thickness to media compared to the control group, while the group fed with hypercholesterolemia diet plus A. hirtifolium extract significantly decreased atherosclerotic plaque thickness to media, TC, TG, LDL-C, and significantly increased HDL-C compared to hypercholesterolemic diet group. Supplementation with A. hirtifolium extract did not cause any significant alteration in apolipoproteins, SGOT, SGPT, hs-CRP, glucose and insulin compared to the hypercholesterolemic diet group (p>0.05). Ethanolic extract of A. hirtifolium ameliorates fatty lesions in aorta and may reduce risk factors of cardiovascular diseases.

Hyperlipidemia is a heterogeneous group of disorders characterized by an excess of lipids in the bloodstream Given previous studies on barberry and Melissa officinalis extracts، this study aims at comparing hypolipidemic activities of Melissa officinalis extract and Berberis vulgaris. For the purpose of this study، 64 Wistar rats were selected and divided into 8 groups (n=8). The control group was administered with ordinary diet; the sham group was administered with high-fat diet and intraperitoneally 0. 2 ml/dl of the extract solvent (normal saline); and similarly، experimental groups received minimal، moderate and maximum dosages of barberry and Melissa officinalis extracts. The treatment group''s was given high-fat diet for 21 days. After this period، blood samples were taken and the gathered data were analyzed using SPSS software. The amount of cholesterol، triglyceride and LDL were increased in the model group compared to the control group، whereas the same substances were decreased significantly in the group receiving the extract compared to the model group (p<0. 05). Hypolipidemic properties of alcohol extracts of Melissa officinalis are more effective than those of Berberis vulgaris. Moreover، it should be noted that it is rather the antioxidant properties of Melissa officinalis and their effects on the increase in thyroid hormones as well as the presence of alkaloid compounds، such as berberine in Berberis vulgaris، that inhibits cholesterol synthesis and enables its excretion.

Diabetes mellitus is a common endocrine disorder. Anti-diabetic agents from natural and synthetic sources are available for the treatment of this disease. Berberis integerrima is a medicinal shrub used in conventional therapy for a number of diseases. The aim of the present study was to investigate the effects of aqueous extract of Berberis integerrima root (AEBI) on some physiological parameters in normal and streptozotocin-induced (STZ-induced) diabetic male Wistar rats. STZ-induced diabetic rats showed significant increases in the levels of blood glucose, triglycerides (TG), total cholesterol (TC), low density lipoprotein LDL-cholesterol (LDL-C), creatinine (Cr), urea, alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), total bilirubin while body weight, high density lipoprotein HDL-cholesterol (HDL-C) and total protein levels were significantly decreased compared to normal rats. Treatment of diabetic rats with different doses of aqueous extract of Berberis integerrima root (250 and 500 mg/Kg bw) resulted in a significant decrease in blood glucose, triglycerides, cholesterol, LDL-cholesterol, ALT, AST, ALP, total bilirubin, creatinine and urea while HDL-cholesterol and total protein levels were markedly increased after six weeks compared to untreated diabetic rats. The effects of the AEBI at dose of 500 mg/Kg in all parameters except blood glucose (similar) is more than to the standard drug, glibenclamide (0.6 mg/Kg, p.o.). The results of this study indicate that the tested aqueous extract of Berberis integerrima root possesses hypoglycemic, hypolipidemic and antioxidant effects in STZ-induced diabetic rats.

Diabetes mellitus manifests itself in a wide variety of complications and the symptoms of this disease are multifactorial. Previous studies proved that this disease is directly related to hyperglycemia and hyperlipidemia. The aim of this study was to investigate the hypoglycemic and hypolipidemic effects of hydroalcoholic extract of Prangos frulacea (L.) Lindl in alloxan-induced diabetic rats. Forty female Wistar rats with body weight of 200±20 g were randomly divided into five groups with eight rats per group. Diabetes was induced in rats by alloxan monohydrate at dose of 120 mg/kg body weight (BW) injected intraperitoneally. Hydro-alcoholic extract of the root and leaves with stems of P. frulacea at 100 mg/kg BW were given orally to diabetic rats daily for 4 weeks. Diabetic rats (D) exhibited a significant (p<0.05) increase in the levels of the serum glucose, Total Cholesterol (TC), Triglycerides (TG), and LDL in comparison with the control group whereas their BW and serum HDL levels were decreased. In diabetic rats treated by root extract of P. frulacea, these parameters were reversed to the normal levels compared with diabetic group. According to the results obtained, it was concluded that Root´s hydro-alcoholic extract of P. frulacea can be used in diabetics for the purpose of glucose and lipid profile reduction.