Effect of methanolic extract of Dendrophthoe falcata leaves on acute hyperglycemic adult zebrafish

Background: Herbs used in medicinal practices by the indigenous healers are found to be of great importance in the management of diseases that are yet to have a cure by the available drugs. Practice of using herbs available in the vicinity by the locals as medication for ailments is a universal phenomenon. Dendropthoe falcata, an arboreal parasitic plant used in the indigenous medicine for the management of diabetes, is explored here for its acute hyperglycemic model adult zebrafishes. Aim and Objectives: The aim of the study was to determine the hypoglycemic effect of the methanolic extract of Dendrophthoe falcata leaves in alloxan-induced acute diabetic adult zebrafish. Materials and Methods: Adult zebrafishes were grouped into five groups with six fishes in each group exposing them to alloxan to induce acute hyperglycemia and then treating them with two test doses of 40 mg/dl and 60 mg/dl of the methanolic extract of the plant extract. Another group was treated with metformin with a dosage of 20 micro moles. Body mass index, blood glucose, and histopathological examination pre- and post-treatment for a period of 14 days were studied. Results: The effect of the herbal extract in both the doses was promising when compared with the standard drug metformin; however, the cytoprotective effect was very predominant with the both doses of the extract. Acute hypoglycemic was comparatively good when compared with the standard group treated with metformin. Conclusion: The antidiabetic effect of the arboreal parasitic plant has been established with a need for further exploration of this plant for a potential drug for diabetes mellitus.

Chemical constituents from acid hydrolyzates of Panax quinquefolius total saponins and their inhibition activity to α-glycosidase and protein tyrosine phosphatase 1B / 中草药·英文版

Objective: To investigate the hypoglycemic components from the acid hydrolyzates of Panax quinquefolius total saponins, and screen the active compounds by in vitro inhibitory activities to α-glycosidase enzymes and protein tyrosine phosphatase-1B (PTP1B). Methods: The hydrolyzates were chromatographed repeatedly over silica gel column, and the structures of the compounds were determined by means of NMR. The in vitro bioassay was performed through the inhibitory effects on α-glucosidase or/and PTP1B. Results: Eight compounds were isolated, which identified as 20(S)-panaxadiol (1), (20S,24R)-dammarane-20,24-epoxy-3β,6α,12β,25-tetraol (2), 20(R)-dammarane-3β,12β,20,25-tetraol (3), 20(S)-dammarane-3β,6α,12β,20,25-pentol (4), 20(R)-dammarane-3β,12β,20,25-tetrahydroxy-3β-O-β-D-glucopyranoside (5), β-sitosterol (6), oleanolic acid (7) and 20(S)-protopanaxadiol (8). Compound 5 was ginseng triterpenoid isolated from the acid hydrolysates of total saponins from P. quinquefolius for the first time. In this paper, the possible in vitro inhibitory activities were investigated. Compound 5 exhibited significantly inhibitory activity against α-glucosidase, and the IC50 value [(0.22 ± 0.21) µmol/L] was about 43-fold lower than positive control. For the PTP1B inhibition assay, compound 5 indicated the strongest inhibitory effect with IC50 of (5.91 ± 0.38) µmol/L, followed by compound 4 with IC50 of (6.21 ± 0.21) µmol/L, which were all showed competitive inhibitory pattern by using a Lineweaver-Burk plot. Conclusion: These results supported the potential application of dammaranes from acid hydrolyzates of P. quinquefolius total saponins can be used as ingredients of ancillary anti-diabetic agent or functional factor.

Selenium-layered nanoparticles serving for oral delivery of phytomedicines with hypoglycemic activity to synergistically potentiate the antidiabetic effect

Diabetes mellitus (DM) remains a great challenge in treatment due to pathological complexity. It has been proven that phytomedicines and natural medicines have prominent antidiabetic effects. This work aimed to develop selenium-layered nanoparticles (SeNPs) for oral delivery of mulberry leaf and extracts (MPE), a group of phytomedicines with significant hypoglycemic activities, to achieve a synergic antidiabetic effect. MPE-loaded SeNPs (MPE-SeNPs) were prepared through a solvent diffusion/ reduction technique and characterized by particle size, potential, morphology, entrapment efficiency (EE) and drug loading (DL). The resulting MPE-SeNPs were 120 nm around in particle size with EE of 89.38% for rutin and 90.59% for puerarin, two marker components in MPE. MPE-SeNPs exhibited a slow drug release and good physiological stability in the simulated digestive fluid. After oral administration, MPE-SeNPs produced significant hypoglycemic effects both in the normal and diabetic rats. intestinal imaging and cellular examinations demonstrated that MPE-SeNPs were provided with outstanding intestinal permeability and transepithelial transport aptness. It was also revealed that MPE-SeNPs could alleviate the oxidative stress, improve the pancreatic function, and promote the glucose utilization by adipocytes. Our study provides new insight into the use of integrative nanomedicine containing phytomedicines and selenium for DM treatment.

Hypoglycemic effect of alismoxide in type 2 diabetic mice / 中国药理学通报

Aim To investigate the hypoglycemic effect of alismoxide. Methods Type 2 diabetes mellitus (DM) mouse model induced by combined administration of streptozotocin and nicotinamide was adopted. Three weeks later, blood glucose of blank control group and type 2 diabetic mouse model group was measured on day 21 , and oral glucose tolerance test(OGTT) was carried out on day 2 2 , respectively. After type 2 diabetic mouse model was successfully established, rosiglitazorie was chosen as positive drug. Oral administration of rosiglitazone at dose of 10 mgk g-1 daily was performed for three weeks in positive group. Oral administration of alismoxide at dose of 5 , 10 and 20 mg kg"1 daily for three weeks was carried out in alismoxide different dose group, respectively. Furthermore, influence of alismoxide on differentiation was investigated in 3T3-L1 pre-adipocytes, and Oil red 0 staining was adopted. Results Not only blood glucose was decreased by alismoxide in type 2 DM mice, but also hypoglycemic trend was exhibited during OGTT. Furthermore, at concentration of 0. 5 and 1 fimol L " 1 , alismoxide promoted 3T3-L1 pre-adipocyte differentiation. Conclusions It suggests that alismoxide might possess hypoglycemic property and accelerate pre-adipocyte differentiation; however, the mechanism involved needs further study.

Estudio del efecto fisiológico del consumo de arepas enriquecidas con pectina extraída de la cáscara de curuba (Passiflora tripartita var. mollissima) / Study of the physiological effect of the consumption of arepas enriched with pectin extracted from banana passionfruit peel (Passiflora tripartita var. mollissima) / Estudo do efeito fisiológico pelo consumo de arepas enriquecidas com pectina extraída da casca de curuba (Passiflora tripartita var. mollisima)

Resumen Se evaluó el efecto fisiológico del consumo de arepas de maíz enriquecidas con 10% (p/p) de pectina extraída de cáscara de curuba sobre los niveles séricos de glucosa y lípidos en adultos voluntarios. La pectina se extrajo con ácido clorhídrico y se precipitó con etanol del 96% (v/v). En primer lugar, los voluntarios consumieron arepa sin pectina por siete días; después, arepa con 10% (p/p) de pectina cítrica comercial por 20 días y, finalmente, arepa con 10% de pectina de curuba por 20 días. Al mismo tiempo, se realizó un análisis sensorial de aceptación. Los resultados mostraron que, al consumir arepa con pectina de curuba, los niveles séricos de glucosa disminuyeron significativamente (5,88% (p = 0,023)), mientras que el perfil lipídico no se afectó. La arepa con pectina de curuba mostró mayor porcentaje de fibra dietética soluble, insoluble y total, así como menor porcentaje de carbohidratos disponibles, respecto a las otras arepas analizadas. El panel sensorial dictaminó baja aceptación en sabor y textura para las arepas con pectina cítrica comercial y con pectina de curuba. Se concluyó que la pectina de curuba puede aprovecharse para la formulación de arepas ya que ofrece a los consumidores un alimento benéfico para reducir los niveles de glucosa en la sangre.

Abstract The physiological effect of corn arepas consumption enriched with 10% (w/w) pectin extracted from banana passionfruit peel was evaluated on the serum levels of glucose and lipid in adult volunteers. The pectin was extracted with hydrochloric acid and precipitated with 96% (v/v) ethanol. Firstly, the volunteers consumed arepa without pectin for seven days; then, arepa with 10% of commercial citrus pectin for 20 days, and, finally, arepa with 10% banana passionfruit pectin for 20 days. At the same time, a sensory acceptance analysis was carried out. The results showed that, when consuming arepa with banana passionfruit pectin, serum glucose levels decreased significantly (5.88% (p = 0.023)), while the lipid profile was not affected. The arepa formulated with banana passionfruit pectin showed a higher percentage of soluble, insoluble and total dietary fiber, as well as a lower percentage of available carbohydrates as compared to the other analyzed arepas. The sensory panel ruled low acceptance in flavor and texture for arepas with commercial citrus and banana passionfruit pectin. It was concluded that banana passionfruit pectin can be used for the formulation of arepas since it offers to consumers a beneficial food to reduce blood glucose levels.

Resumo Este estudo avaliou o efeito metabólico do consumo de arepas de milho enriquecidas com 10% (p/p) de pectina extraída da casca da curuba, sobre os níveis séricos de glucose e lipídios, em adultos voluntários. A pectina foi extraída utilizando ácido clorídrico e precipitou-se com etanol à 96% (v/v). Primeiro, os voluntários consumiram arepa sem pectina por sete dias, então arepa com 10% de pectina cítrica comercial por 20 dias, e finalmente arepa com 10% de pectina de curuba por 20 dias. Paralelamente, foi realizado uma análise sensorial de aceitação. Os resultados encontrados mostram que ao consumir arepa com pectina de curuba os níveis séricos de glucose diminuíram significativamente (5,88% (p = 0,023)), enquanto que o perfil lipídico não foi afectado. A arepa com pectina de curuba mostrou maior percentagem de fibra dietética solúvel, insolúvel e total, e um menor percentagem de carboidratos disponíveis com respeito aos valores das outras arepas avaliadas. O painel sensorial mostrou baixa aceitação no sabor y textura para arepas com pectina cítrica comercial e de curuba. Concluiu-se que a pectina de curuba pode ser usada para a formulação de arepas, uma vez que oferece aos consumidores um alimento benéfico para reduzir os níveis de glucose no sangue.

Hypoglycemic activity of Capparis ovata desf. var. palaestina zoh. methanol extract

Caper (Capparis ovata Desf. and Capparis spinosa L.) is naturally widespread in Turkey. Traditionally, buds, fruits, seeds and roots of this plant are used as tonic, diuretic, anti-rheumatic, expectorant, antidiabetic, and antifungal. The aim of this study is to evaluate potential hypoglycemic effect of C. ovata var. palaestina extracts in alloxan-induced diabetic mice. For this purpose; diabetic mice were administered with 100, 300, 500 mg/kg (i.p.) doses of methanol extract of bud and fruit. Blood glucose levels were screened 60, 120, 240 and 360 min. after treatment. Furthermore, high resolution mass spectrometry (HRMS) analysis, ABTS and DPPH free radical scavenging activity test, and phenolic and flavonoid compounds analysis of extracts were carried out. The data obtained from in vivo study revealed that fruit-methanol 500 mg/kg (FM3), bud-methanol 300 mg/kg (BM2), bud-methanol 500 mg/kg (BM3) extracts showed significant hypoglycemic activity. All extracts indicated significant antioxidant activity, however bud-methanol (BM) extract demonstrated the most potent antioxidant activity. Moreover high levels of phenolic substances and flavonoids were involved in all extracts, but the highest levels were found in FM extract. HRMS study showed that rutin, quercetin 3-O-glucoside (isoquercitrin) and stachydrine substances had seen in BM extract. The results of this study showed that the C. ovata var. palaestina extracts which, indicate hypoglycemic, antioxidant activities, might provide additional support in diabetes.

Hypoglycemic effect of medicinal formula composed of Cyclocarya paliurus and Mulberry leaves / 中国药科大学学报

@#The purpose of this study was to investigate the hypoglycemic effect and the safety of medicinal formula composed of Cyclocarya paliurus and Mulberry leaves. An experimental diabetic rat model was established by high energy diet plus small dosage of auoxan(ALX). At the same time, each group rats were given distilled water(blank and model), metformin(Met), Cyclocarya paliurus aqueous extract(CP), Mulberry leaves aqueous extract(ML)and the different proportions of aqueous extract mixtures of Cyclocarya paliurus and Mulberry leaves(CM1, CM2 and CM3), respectively. Fasting blood glucose(FBG), OGTT, TC, TG, LDL-C, HDL-C, insulin and liver and kidney function related index were gauged to evaluate the hypoglycemic effect and the safety of samples. The results showed that FBG level of the rats in CM1, CM2 and CM3 groups decreased 21. 64%, 16% and 12. 55%, respectively, comparing with that of model group. Moreover, FBG, glucose tolerance and pancreatic tissue morphology were remarkably improved in CM1 group. TC and LDL-C levels of rats in ML and CM3 groups decreased significantly compared with the those of Model group(P< 0. 05), which showed ML and CM3 were beneficial to regulate the blood lipid level in diabetic rats. Furthermore, all the administration groups had no adverse effect on liver function index. The down regulation of kidney function index of CP, ML, CM1, CM2 and CM3 groups comparing with model group indicated that Cyclocarya paliurus and Mulberry leaves could alleviate the injury of liver and kidney. Our results demonstrated that the medicinal formula composed of Cyclocarya paliurus and Mulberry leaves were favorable to reduce blood glucose and can regulate lipid metabolism without liver and kidney toxicity.

Jatrorrhizine regulates GLUTs with multiple manners for hypoglycemic effect in insulin-resistance 3T3-L1 adipocytes / 中国中药杂志

This paper aimed to investigate the hypoglycemic effect and relative mechanism of jatrorrhizine in insulin-resistance (IR)-3T3-L1 adipocytes. The 3T3-L1 preadipocytes were used to induce mature adipocytes, then the stable IR model was established with 1 μmol·L⁻¹ dexamethasone. The adipocytes were divided into normal group, IR model group, rosiglitazone positive group and jatrorrhizine group (0.5, 1, 5, 10, 20 μmol·L⁻¹). After different time points (12, 24, 30, 36, 48 h) treatment, glucose content of 3T3-L1 adipocytes was detected by the glucose oxidase peroxidase method and TG content was measured by glycerol phosphate oxidase method, whereas cell viability was detected by CCK-8 assay. Furthermore, the protein expression levels of insulin receptor substrate 2 (IRS2), phosphinositide-3-kinase regulatory subunit 1(PI3KR1), phosphorylated protein B [p-AKT (Ser473)], phosph-AMP-activated protein [p-AMPK (Thr172)], and glucose transporter type 4/1/2 (GLUT4/1/2) were detected by Western blot assay. The results showed that as compared with the normal group, the glucose consumptionwas significantly decreased in IR model group(<0.01); whereas 0.5, 1, 5, 10, 20 μmol·L⁻¹ jatrorrhizine and rosiglitazone group elevated IR-3T3-L1 cells glucose consumption (<0.01) at 36 h and 48 h administration as compared with IR group. The optimal administration time was 48 h for jatrorrhizine. 1, 5, 10, 20 μmol·L⁻¹ of jatrorrhizine decreased the TG content in 3T3-L1 adipocytes for 48 h administration (<0.05). The protein expression levels of IRS2, PI3KR1, p-AKT (Ser473), p-AMPK (Thr172), GLUT4/1/2 were significantly up-regulated by different concentrations of jatrorrhizine and rosiglitazone (<0.01). The results showed that jatrorrhizine increased glucose uptake with elevated glucose consumption, whereas reduced intracellular TG content in IR-3T3-L1 adipocytes. Moreover, it intervened classic insulin signal pathway IRS2/PI3KR1/p-AKT/GLUT4 and increase AMPK protein phosphorylation level for the activation of GLUT1/4 for insulin sensibility. Thus, jatrorrhizine could effectively regulate the GLUTs with multiple manners for hypoglycemic effect.

Research progress of the mechanism of hypoglycemic effect of active component of Mori Folium / 国际中医中药杂志

In recent years, the study suggests that Mori Folium has an effect of hypoglycemic, and its main active hypoglycemic effect components are alkaloids, flavonoid, polysaccharides, etc.To comprehensively understand the active components and the mechanism of Mori Folium for hypoglycemic, the active components and mechanism of Mori Folium for prevention and treatment of diabetes were reviewed.

Non-hypoglycemic effect of metformin in renal protection:a literature review / 中国药理学通报

The effectiveness,safety and economy of metformin on type 2 diabetes mellitus therapy are well recognized, which has been used as the first-line oral hypoglycemic agent in recent dec-ades. Apart from hypoglycemic effect, recent studies show that metformin can exert renal protection via the mechanisms of auto-phagy induction, anti-senescence, antioxidative stress, against endoplasmic reticulum stress,anti-inflammation, and anti-fibro-sis through AMPK dependent or independent pathway, which prompt its therapeutic potential in acute kidney injury and chron-ic kidney disease. The non-hypoglycemic nephroprotective effects as well as their underlying mechanisms of metformin are summarized in this review.

Effect of negative polarity electret on dielectric properties and hypoglycemic effects of insulin / 第二军医大学学报

Objective To study the effect of negative polarity electret on the dielectric properties and structure of insulin, and to observe the influence of electrostatic field on the hypoglycemic effect of insulin. Methods Negative polarity electrets of –500, –1 000 and –1 500 V were prepared using polypropylene film by a gate voltage corona charging system, and were used to treat insulin, respectively. The equivalent surface potential of each electret within 48 h was measured by compensation method. The relationship between the polarization of insulin and the electrostatic field was measured by the dielectric constant d33. The influence of the electrostatic field on the molecular structure of insulin was examined by nuclear magnetic resonance and gel electrophoresis. Insulin exposed to –500, –1 000 and –1 500 V negative polarity electret for 12 h was injected into the diabetic rats, and then the hypoglycemic effect of insulin were observed. Results The potential differences between the two sides of insulin solution effected by negative polarity electrets with different surface potentials were exponentially increased within 0-4 h and gradually became constant at 4-48 h. Compared with the insulin patch treated by non-electret electrostatic field, the d33 values of insulin patch effected by –500, –1 000 and –1 500 V electret for 12 h were increased by 14.7 times, 26.7 times and 45.0 times, respectively, and all tended to be stable after 12 h. The spatial structure of insulin exposed to electrostatic field did not change, but the hydrogen bond content of most perssad was decreased; the proportion of monomers of the insulin was increased, and the main structures of the insulin were monomers and dimers. Compared with the electret-free insulin treatment group, the blood glucose content of diabetic rats treated with the –500 V and –1 000 V negative polarity electrets insulin for 8 h were decreased by 50.9% and 22.1%, respectively (P<0.05). Conclusion Negative polarity electret can further improve the hypoglycemic effect of insulin.

Advances in chemical constituents and pharmacological activities of plants of genus Salix / 中草药

Plants of the genus Salix L. are abundant in resources, consisting more than 520 species throughout the world. The bark, branches, leaves, and flowers of different Salix species are used in folk medicines with a long history. There are several kinds of chemical components in the Salix plants, such as flavonoids, salicylic acid and its derivatives, phenylpropanoids, terpenoids, anthraquinones and steroids, which have the pharmacological activities of anti-tumor, analgesic, anti-inflammatory, anti-oxidant, hypoglycemic, regulating the nervous system, promoting the lipid dissolution, etc. In the present paper, we summarize the research reports related with plants of the genus Salix from the databases of CNKI and PubMed from 2008 to 2018, and review the research progress of chemical components and pharmacological effects to provide references for the in-depth studies of medicinal active ingredients and their action mechanism on this genus, hoping to promote the further rational development and utilization of the Salix plants.

In vitro hypoglycemic effects of unripe and ripe fruits of Musa sapientum

ABSTRACT The present study was undertaken to verify the hypoglycemic potential of unripe and ripe fruit extracts of Musa sapientum by using various in-vitro techniques, namely glucose adsorption capacity, glucose diffusion, amylolysis kinetics and glucose transport across the yeast cells. The results revealed that the unripe and ripe fruit extracts of Musa sapientum adsorbed glucose and the adsorption of glucose increased remarkably with an increase in glucose concentration. There were no significant (p≤0.05) differences between their adsorption capacities. In the amylolysis kinetic experimental model the rate of glucose diffusion was found to be increased with time from 30 to 180 min and both extracts exhibited significant inhibitory effects on the movement of glucose into external solution across the dialysis membrane as compared to control. The plant extracts also promoted glucose uptake by the yeast cells and enhancement of glucose uptake was dependent on both the sample and glucose concentration. The hypoglycemic effect exhibited by the extracts was observed to be mediated by inhibiting α-amylase, inhibiting glucose diffusion by adsorbing glucose and by increasing glucose transport across the cell membranes as revealed by an in-vitro model of yeast cells.

Chemical constituents and pharmacological activities of Cyclocarya paliurus(Batal.)Iljinskaja:research advances / 国际药学研究杂志

Cyclocarya paliurus(Batal.)Iljinskaja,a Chinese native plant,contains various components of bioactive constitu-ents in leaves. The main chemical constituents are triterpenes,flavonoids,organic acids,polysaccharides,steroids,etc. and among them,the dammarane-type triterpenoids are the main sweet components. Modern pharmacological research has demonstrated that these compounds or plant extracts show hypoglycemic,lipid-lowering,blood pressure lowering,antioxidation,and antibacterial activi-ties,and so on. The research advances in chemical constituents and pharmacological effect of C. paliurus are reviewed for a prospect reference of its further development and utilization.

Antidiabetic effect of Acanthopanax senticosus extracts in diabetic mice:a serum metabonomic study by UPLC-MS/MS / 国际药学研究杂志

Objective To investigate the antidiabetic effect of Acanthopanax senticosus extracts based on metabonomics by UPLC-MS/MS and to explore its mechanisms. Methods The type 2 diabetes mellitus(T2DM)mouse model was established by inject-ing streptozocin(streptozotocin,STZ)in combination with alloxan. The effect of A. senticosus extracts on the fasting blood glucose of mice was observed. Multivariate statistical analysis was employed to analyze serum metabolites. The differential metabolites were iden-tified by online and self-built databases. MetPA Was employed to analyze the corresponding metabolic pathways. Results The T2DM model was established successfully. Compared with the model group,the fasting blood glucose of mice in the A. senticosus extracts groups decreased significantly. Compared with the normal control group,the level of phenylalanine,LysoPC(16:0,18:0),tyrosine, serine,urea andβ-hydroxybutyric acid inecreased,while the level of alanine,glutamine,leucine,valine and lactic acid decreased significantly in the model group. Pathway enrichment displayed that these metabolites were mainly involved in five metabolic pathways. The above-mentioned metabolites reversed to the normal level in varying degrees after administration of A. senticosus glycosides or poly-saccharoses extracts. Conclusion The extracts of A. senticosus display a significant hypoglycemic effect which might be achieved by regulation of amino acid,energy and lipid metabolism.

Intervention effects of the extract of Alismatis Rhizoma on streptozotocin-induced type 2 diabetic rats / 中国药科大学学报

To investigate the hypoglycemic effects of ethyl acetate extract of Alismatis Rhizoma (AREEA) on type 2 diabetes mellitus,the model of type 2 diabetic rats was induced by high-fat diet feeding for 4 weeks and then intraperitoneal injection of a low dose of streptozotoin (STZ).Rats without the above-mentioned treatment were selected as the normal control group.The diabetic rats were randomly divided into 5 groups:the model control group,low doses (20 mg/kg),medium doses (50 mg/kg),high doses (100 mg/kg) of AREEA groups and positive control-metformin group (100 mg/kg).After four weeks,oral glucose tolerance test (OGTT) and insulin tolerance test (ITT) were performed,respectively.12 hours after the last administration,the levels of serum glucose,glycated hemoglobin(HbA1 c),insulin (Ins),total cholesterol (TC),triglyceride (TG),high density lipoprotein (HDL-C),low density lipoprotein (LDL-C),superoxide dismutase (SOD),malondialdehyde (MDA),glutathione (GSH-Px),tumor necrosis factor-or (TNF-α),interleukin-6 (IL-6),insulin-mediated tyrosine of IRS-1 and Akt phosphorylation in adipose tissue were determined.In addition,the pathological changes of pancreas were examined.After administration for 4 weeks,all doses of AREEA significantly reduced the fasting blood glucose of type 2 diabetic rats (P ＜0.05).In the high doses group of AREEA,the levels of GLU,HbA1c,TC,TG,MDA,TNF-α and IL-6 in serum were decreased significantly,and the levels of SOD and GSH-Px were increased (P ＜ 0.05).These results suggest that AREEA has the therapeutic effect on type 2 diabetes-related symptoms by metabolic regulation of glucose and lipids.

Research Progress in Hypoglycemic Effect of Traditional Chinese Medicine Based on AMPK Signaling Pathway / 中国药师

Traditional Chinese medicine shows good hypoglycemic effect with mild efficacy, long duration and few adverse reac-tions. In recent years, the researches on the hypoglycemic effect of Ruikang Hospital Affilliated to traditional Chinese medicine mainly started from the mechanism of new target protein and pathway, for example, Chinese medicine monomers or compounds including as-tragalus polysaccharide, curcumin, berberine, emodin, total saponins of momordicacharantia, total saponins of momordicacharantia, Yitangkang, Jiangtang Sanhuang tablets, Jianpixiaokefang and Tangnaikang granule can activate Adenosine monophosphate ( AMP)-activated protein kinase ( AMPK) to play hypoglycemic effect.

Research progress on chemical constituents of Anhua dark tea and their activities / 中草药

As one of the typical representative of dark tea, Anhua dark tea have been received more attention due to its significant hypolipidemic effects in recent years, and more investigation has been performed on the components and activities of Anhua dark tea especially on Fuzhuan brick tea. In this paper, the recent study on chemical constituents and pharmacological activities of Anhua dark tea was summarized, so as to provide reference for its further investigation and development of relative production.

A Research Progress on the Chemical Constituents and Biological Activity of Trapa L / 世界科学技术-中医药现代化

China boasts for its abundant resources of Trapa L.The fruit of Trapa has been given high edible and medicinal values so far.Trapa L.plants mainly contain terpenoids,sterols,phenolic acids and flavonoids.Current studies profotmdly analyzed the biological activities on hypoglycemic,anti-oxidation,anti-tumor,antibacterial and immunomodulatory effects of it.Some preliminary studies over biological activities included the effects on reducing the expression of vascular endothelial growth factor (VEGF),the inhibition of H2O2-induced injury of human umbilical vein endothelial cells,inducing HeLa cell apoptosis,analgesia,liver protection,anti-atherosclerosis and deworming.This paper reviewed literature on the chemical constituents and biological activities of Trapa L for the provision of a reference for the exploration and utilization of Trapa L.