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1.
Ethnopharmacological relevance
Kai-Xin-San (KXS) is a famous traditional Chinese medicine (TCM) formula. It has been used in the treatment of diseases including neurasthenia, Alzheimer's disease and neurosis.Aim of the study
To provide information on the potential toxicity of KXS, we evaluated the acute and subchronic toxicity in rodents.Materials and methods
In acute study, a single administration of KXS was given orally to mice at doses ranging from 19.67 to 60.04 g/kg. In the sub-chronic oral toxicity study, KXS was administered to rats at 0, 1, 3 and 9 g/kg for 13 weeks. Moreover, 30 days of post treatment (withdrawal study) was conducted. Mortalities, clinical signs, body weight changes, food and water consumption, haematological and biochemical parameters, gross findings and organ weights were monitored during the study period.Results
In the sub-chronic study in rats, daily oral administration of KXS at the dose of 9 g/kg/day result in significant increase in WBC, lymphocyte, alkaline phosphatase, blood sugar and significant decrease in bodyweight, serum Cre, CK and CHO at the last week of treatment. Recovery except for the body weight was observed after 30 days of post treatment.Conclusions
KXS is relatively safe for oral medication. The LD50 of KXS was over 32.59 g/kg for mice. The no-observed-adverse-effect-level (NOAEL) was considered to be 19.67 g/kg/day for rats. 相似文献2.
Kunanusorn P Panthong A Pittayanurak P Wanauppathamkul S Nathasaen N Reutrakul V 《Journal of ethnopharmacology》2011,134(3):789-795
Ethnopharmacological relevance
Since the use of Nelumbo nucifera stamens in herbal medicines as well as in cosmetic products are highly prevalent in Thailand and increasing worldwide, acute and subchronic toxicity studies to confirm the safe use of Nelumbo nucifera stamens are warranted.Aim of the study
Acute and subchronic oral toxicity studies of Nelumbo nucifera stamens extract in rats were performed in the present study in order to evaluate its safety.Materials and methods
In acute toxicity study, Nelumbo nucifera stamens extract was administered by oral gavage to Sprague-Dawley rats (5 males and 5 females) at a dose of 5000 mg/kg. In subchronic toxicity study, the extract at doses of 50, 100, and 200 mg/kg/day were given orally to groups of rats (6 rats/dose/sex) for 90 consecutive days.Results
The extract at a dose of 5000 mg/kg produced no treatment-related signs of toxicity or mortality in any of the animals tested during 14 days of the study. In the repeated dose 90-day oral toxicity study, there was no significant difference in body weight between the control and all treatment groups with the exception of the body weight of the female group treated with 200 mg/kg/day of the extract which was statistically significantly less than that of its control counterpart on day 90 but the percent weight changes of both groups were almost similar. Some statistically significant differences in hematological and biochemical parameters as well as in some internal organ weights of both male and female rats treated with the extract at the highest dose were observed. However, no abnormality of internal organs was observed in both gross and histopathological examinations.Conclusions
These results suggest that the oral lethal dose of Nelumbo nucifera stamens extract for male and female rats is in excess of 5000 mg/kg and the no-observed-adverse-effect level (NOAEL) of the extract for both male and female rats is considered to be 200 mg/kg/day. 相似文献3.
Wang D Xu K Zhong Y Luo X Xiao R Hou Y Bao W Yang W Yan H Yao P Liu L 《Journal of ethnopharmacology》2011,134(1):156-164
Ethnopharmacological relevance
Pu-erh black tea, which is obtained by first parching crude green tea leaves and then undergoes secondary fermentation with microorganisms, has been believed to be beneficial beverages for health for nearly 2000 years in China, Japan and Taiwan area. But its potential toxicity when administered at a high dose as concentrated extracts has not been completely investigated.The aim of the study
The present study was aimed at evaluating potential toxicity of Pu-erh black tea extracts (BTE) from acute and sub-chronic administration to male and female Sprague-Dawley (SD) rats.Materials and methods
A single BTE dose of 10,000 mg/kg of body weight was administered by oral gavage for acute toxicity in SD rats. Four groups (10 males and 10 females per group) of dose levels of 1250, 2500, and 5000 mg/kg/day of the test article, as well as controls (distilled water) were tested as the subchronic toxicity study.Results
No deaths and signs of toxicity occurred during the 14 days of the study. There were no test article related mortalities, body weight gain, feed consumption, clinical observation, organ weight changes, gross finding, clinical or histopathological alterations during the 91-day administration.Conclusions
The LD50 of BTE can be defined as more than 10,000 mg/kg, and a dose of 5000 mg/kg/day was identified as the no-observed-adverse-effect-level (NOAEL) in this study. 相似文献4.
Shenoy RR Sudheendra AT Nayak PG Paul P Kutty NG Rao CM 《Journal of ethnopharmacology》2011,133(2):608-612
Ethno-pharmacological relevance
The seeds of Sesamum indicum Linn. (Pedaliaceae) has been used traditionally for the treatment of wounds in Buldhana district of Maharashtra state. Sesamol is the main anti-oxidative constituent contained mainly in the processed sesame seed oil which has not been explored scientifically for its wound healing activity.Aim of the study
To investigate the influence of sesamol (SM) on wound repair, both in normal and dexamethasone (DM) delayed healing processes in albino rats.Materials and methods
Incision, excision and dead space wounds were inflicted on albino rats (180-220 g) of either sex, under ketamine anaesthesia. Group I served as control, group II received SM 50 mg/kg i.p., group III was treated with dexamethasone (DM) i.m. (0.17 mg/kg) and SM + DM was given to group IV. The tensile strength, wound contraction, hydroxyproline, lysyl oxidase and total RNA and DNA levels (in granulation tissue) were measured.Results
The tensile strength significantly (p < 0.05) increased with SM at 471.40 ± 14.66 g when compared to control at 300.60 ± 9.16 g in normal and DM suppressed healing. No significant change was observed in duration of wound contraction and lysyl oxidase when compared to control at 2.98 ± 0.10 mg. SM treated rats showed a significant (p < 0.05) rise in hydroxyproline levels at 6.45 ± 0.45 mg when compared to control at 1.75 ± 0.20 mg.Conclusion
These results indicate that sesamol could be a promising drug in normal as well as delayed wound healing processes. 相似文献5.
Tom EN Demougeot C Mtopi OB Dimo T Djomeni PD Bilanda DC Girard C Berthelot A 《Journal of ethnopharmacology》2011,133(2):828-833
Aim of the study
The stem bark of Terminalia superba (Combretaceae) (TS) is used in traditional Cameroonian medicine as antihypertensive remedy. The aim of this study was to investigate the hypotensive and the antihypertensive effects of the aqueous extract of the stem bark of Terminalia superba.Materials and methods
Hypertension was obtained in rats by oral administration of 10% d-glucose for 3 weeks. The acute effects of Terminalia superba were studied on blood pressure (BP) and heart rate (HR) after intravenous administration in normotensive rats (NTR) and glucose hypertensive rats (GHR). The antihypertensive effects were studied after oral administration of the extract (50 and 100 mg/kg/day) or nifedipine (10 mg/kg/day) for 3 weeks. At the end of the experiment, BP and HR were measured and reduced glutathione (GSH), malondialdehyde (MDA) and superoxide dismutase (SOD) activity levels were measured in heart, aorta, liver and kidney.Results
Intravenous administration of the aqueous extract of Terminalia superba induced a significant hypotensive response without any change in HR. The hypotensive effect of the extract was unaffected by atropine or propranolol but decreased by reserpine (5 mg/kg) and yohimbine (0.1 mg/kg). In addition, the oral administration of the extract significantly prevented the rise in BP in glucose-hypertensive rats. Finally, the treatment with plant extract significantly blunted the decrease in GSH and the increase in MDA levels associated with hypertension, and significantly prevents the increase in aortic SOD activity.Conclusions
The present study demonstrates that the aqueous extract of the stem bark of Terminalia superba exhibits hypotensive and anti-hypertensive properties that are, at least in part, related to a withdrawal of sympathetic tone and to an improvement of the antioxidant status, respectively. Overall data validate the use of Terminalia superba as antihypertensive therapy in traditional medicine. 相似文献6.
Aim of the study
Our previous studies indicated that processed Aconiti tuber (PAT), a traditional Chinese herbal medicine, had antinociceptive effects and inhibitory effects on morphine tolerance by activation of kappa-opioid receptor (KOR). Preclinical studies also demonstrated that KOR agonists functionally attenuate addictive behaviors of morphine, such as conditioned place preference (CPP). Therefore, we hypothesize that PAT may inhibit morphine-induced CPP in rats.Materials and methods
(1) Five groups of rats (n = 8 for each group) were alternately subcutaneous (s.c.) injected with morphine 10 mg/kg (one group receive normal saline as a control) and normal saline for 8 days and oral co-administrated with distilled water or PAT 0.3, 1.0, or 3.0 g/kg daily on days 2-9 during CPP training, respectively. (2) Other four groups of rats were randomly s.c. injected with nor-binaltorphimine (nor-BNI; 5 mg/kg) or normal saline (as a control) 120 min before alternately s.c. with morphine and normal saline and oral co-administrated with distilled water or PAT 3.0 g/kg daily. Each rat was acquired pre-conditioning and post-conditioning CPP data and assayed dynorphin concentrations by radioimmunoassay in rat's nucleus accumbens (NAc) after CPP training.Results
(1) PAT 1.0 or 3.0 g/kg dose-dependently decreased the morphine-induced increase of CPP scores. (2) Nor-BNI completely antagonized the inhibition of PAT on morphine-induced CPP. (3) PAT dose-dependently increased dynorphin content in rats’ NAc after CPP training.Conclusions
(1) PAT dose-dependently inhibited morphine-induced CPP. (2) The inhibition of PAT on morphine-induced CPP was probably due to activation of KOR by increasing dynorphin release in rats’ NAc. 相似文献7.
Herrera C García-Barrantes PM Binns F Vargas M Poveda L Badilla S 《Journal of ethnopharmacology》2011,133(2):907-910
Aim of the study
Witheringia solanacea is a small shrub that belongs to the Solanaceae family. The plant is used as an antidiabetic in Costa Rican herbal medicine. The aim of this study was to evaluate the hypoglycemic and antihyperglycemic activity of the aqueous extract of W. solanacea leaves in rodent models.Materials and methods
A crude extract of W. solanacea leaves was prepared in boiling water and the aqueous filtrate was lyophilized. A single oral dose of 250, 500 and 1000 mg/kg of the extract was evaluated for hypoglycemic activity in a glucose tolerance test in normal rats and for antihyperglycemic activity in alloxan-induced (140 mg/kg) diabetic rats. The blood glucose level was determined at different times by the glucose oxidase method.Results
Dosage of 500 and 1000 mg/kg of the extract significantly decreased (p < 0.05) blood glucose levels in the glucose tolerance test in normal rats after 1 h, there was no significant difference observed at 250 mg/kg. Dose of 500 mg/kg of the extract significantly reduced (p < 0.05) blood glucose levels in alloxan induced hyperglycemic rats at 4 and 5 h.Conclusions
In the present study, the hypoglycemic and antihyperglycemic potential of the W. solanacea was demonstrated in rats. These results give support to the traditional use of W. solanacea as antidiabetic herbal medicine. 相似文献8.
Di Viesti V Carnevale G Zavatti M Benelli A Zanoli P 《Journal of ethnopharmacology》2011,134(2):514-517
Aim of the study
To evaluate the influence of Humulus lupulus extract on sexual behavior in female rats.Materials and methods
Ovariectomized rats hormonally primed with estradiol benzoate (1.5 μg/rat) and progesterone (500 μg/rat) were acutely treated by oral gavage with Humulus lupulus extract dosed at 5, 10 and 25 mg/kg and then tested for partner preference and sexual receptivity.Results
The administration of Humulus lupulus extract at the highest dose significantly increased the preference for the stimulus male during the partner preference test and the number of proceptive behaviors during the receptivity test, without affecting the lordosis response.Conclusions
Humulus lupulus extract increased sexual motivation in hormone-primed female rats. 相似文献9.
Ethnopharmacological relevance
Tea (Camellia sinensis (L.) O. Kuntze, Theaceae) flowers possess many physiological functions and have been used in traditional medicines for deodorization, skin care, cough suppressant and expectorant in China. However, there is a little information about its possible toxicity.Aim of the study
The present investigation was carried out to evaluate the safety of tea flower extract by mutagenicity and acute and subchronic toxicity studies.Materials and methods
Mutagenicity of tea flower extract was evaluated by the Ames test in Salmonella typhimurium strains TA97, TA98, TA100 and TA102 at concentrations of 0.008, 0.04, 0.2, 1.0, 5.0 mg/plate. In the acute toxicity study, Sprague-Dawley rats were administered a single dose of 12.0 g/kg of body weight by gavage, and were monitored for 14 days. In the subchronic toxicity study, tea flower extract was administered by gavage at doses of 1.0, 2.0 and 4.0 g/kg body weight daily for 13 weeks to Sprague-Dawley rats.Results
In the Ames test, there was no mutagenic effect of tea flower extract (up to 5.0 mg/plate) towards four tested strains (TA97, TA98, TA100, TA102), with or without metabolic activation (S9). In the acute toxicity study, all animals gained weight and appeared active and normal, so the LD50 value must be >12.0 g/kg body weight. In the subchronic toxicity study, no dose-related effects on survival, growth, hematology, blood chemistry, organ weights, or pathologic lesions were observed.Conclusion
These results indicate that tea flower extract does not possess mutagenic potential, and that both acute and subchronic toxicity towards animals is very low. A no-observed adverse-effect level (NOAEL) for tea flower extract is 4.0 g/kg bw/day for rats under the conditions of this study. 相似文献10.
Abdulrashid Umar Bala Y. Muhammad Siti Zaiton Bt. Mat Soad 《Journal of ethnopharmacology》2010,131(1):140-1495
Aim of the study
The present study was aimed to investigate the anti-diabetic potential of the leaves of Tetracera scandens Linn. Merr. (Dilleniaceae) in vivo with regard to prove its efficacy by local herbalists in the treatment of diabetes frailties.Materials and methods
Crude aqueous (AQ) and methanol (MEOH) extracts of the leaves of T. scandens L. were administered to both normal and alloxan induced diabetic male albino rats (Wistar strain). The blood glucose levels were measured at 0, 2, 4, 6 and 8 h after oral administration of AQ and MEOH extracts.Results
Significant reduction in glucose was observed in fasting blood glucose levels in the treated diabetic rats without causing any hypoglycemic effect compared to normal rats. Both polar extracts of the leaves of T. scandens L. exhibited significant anti-hyperglycemic activity at different doses and intervals. The highest anti-hyperglycemic effect (62.5%) was observed by the AQ extract at 0.25 g/kg body weight (b.w.) and MEOH extract (36.5%) at 0.5 g/kg b.w. after 8 h. The significant anti-hyperglycemic activity was found to be comparable with a known oral synthetic hypoglycemic drug, glibenclamide 0.25 mg/kg b.w.Conclusion
This study provides scientific evidence that the leaves of T. scandens L. have anti-diabetic efficacy and justifies its utility by local herbalists. However, more experiments at the clinical levels are required to confirm the utility of this plant by traditional practitioners in the management of diabetes mellitus. 相似文献11.
Ethnopharmacological relevance
Wu-Chu-Yu is a well-known herbal drug used for hypertension. Rutaecarpine and evodiamine are main bioactive components of the medicine.Materials and methods
A sensitive and specific HPLC method was developed to analyze rutaecarpine (Rut) and evodiamine (Evo) in rat whole blood. The pharmacokinetics of Rut and Evo after oral administration of Wu-Chu-Yu extracts with different purities to rats was compared to evaluate the effect of purity of Wu-Chu-Yu extracts on the absorption of Rut and Evo. Male Sprague-Dawley rats were given Wu-Chu-Yu extracts with different purities (high, medium and low) approximately the same doses of equivalent to Rut (40 mg/kg) and Evo (31 mg/kg). The contents of Rut and Evo were 45 and 35%, 28 and 21%, 9 and 7% in high, medium and low purity extracts, respectively. At different time points (0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3 and 4 h) after administration, the concentrations of Rut and Evo in rat whole blood were determined by HPLC, and main pharmacokinetic parameters were calculated.Results
The results indicated that the absorption of Rut and Evo in Wu-Chu-Yu extracts was improved when compared with the pure Rut and Evo and there were significant differences among different groups.Conclusions
The bioavailability of Rut and Evo was increased along with the increasing of purity (16%-80%) in Wu-Chu-Yu extracts. 相似文献12.
M.C. Tchamadeu P.D.D. DzeufietP. Nana C.C. Kouambou NougaF. Ngueguim Tsofack J. Allard N. Blaes R. SiagatL. Zapfack J.P. Girolami I. Tack P. KamtchouingT. Dimo 《Journal of ethnopharmacology》2011,133(2):329-335
Pterocarpus soyauxii Taub (Papilionaceae) is used in Cameroonian traditional medicine and pharmacopoeia to treat hypertension, diabetes, gastrointestinal parasitizes and cutaneous diseases.
Aim of the study
The present investigation was carried out to evaluate the safety of an aqueous stem bark extract of Pterocarpus soyauxii by determining toxicity after acute and sub-chronic oral administration in male and female rodents.Materials and methods
The acute toxicity test was conducted in mice. An aqueous extract of barks was administrated by gavage in single doses of 2.5-12.5 g/kg. General behaviour and mortality were examined for up to 7 days. The sub-chronic toxicity test was performed in rats. The plant extract was administered by daily gavage of 150-600 mg/kg for 42 days. Body weight, food and water intakes were followed weekly. Haematological, biochemical and organ parameters were determined at the end of the 42-day administration.Results
In the acute study in mice, oral administration of the aqueous extract of Pterocarpus soyauxii caused dose-dependent general behaviour adverse effects and mortality. The no-observed adverse effect level (NOAEL) of the extract was 5.0 g/kg. The lowest-observed adverse effect level (LOAEL) was 7.5 mg/kg. Mortality increased with the dose, LD50 was > 10.75 g/kg for the mouse. In the sub-chronic study in rats, daily oral administration of the aqueous extract of Pterocarpus soyauxii did not result in death or significant changes in haematological or biochemical parameters, excepted increased hepatic catalase activity (P < 0.05) at the dose of 600 mg/kg. No alteration was observed in body weight, food and water intake. Liver, kidney, lung and pancreas histopathology did not reveal morphological alteration.Conclusions
The results showed that the aqueous stem bark extract of Pterocarpus soyauxii Taub had very low toxicity in oral acute high dose administration and no toxicity in oral sub-chronic low dose administration and indicate that the plant could be considered safe for oral medication. 相似文献13.
Aim of the study
This experiment studied two extracts of Opuntia streptacantha, a plant used by the Mexican population to treat type 2 diabetes, in different assays to contribute to the understanding of the hypoglycemic mechanism of this plant.Materials and methods
Two different extracts were prepared and tested: the first extract was a filtrate of the traditional liquefied extract (LE) preparation of the cladode; and the second filtrate extract (FE) is a filtered sample of the first. Both extracts contained a newly identified compound for Opuntia (4-hydroxy)-phenyl acetic acid derivate, they were tested on streptozotocin (STZ)-diabetic rats in a series of two tests. The first test was performed to confirm if STZ-diabetic rats presented a hypoglycemic effect after administration of the extracts (LE 135 mg/kg and FE 27 mg/kg). In the second experiment, the extracts were administered before an oral glucose tolerance test (OGTT) to confirm if they have an anti-hyperglycemic effect (LE 135 mg/kg, FE 12 and 27 mg/kg).Results
The extracts administered to STZ-diabetic rats did not produce a significant hypoglycemic effect compared to the control group, while the same extracts administered before an OGTT produced an anti-hyperglycemic effect compared to the control group.Conclusions
The filtered, traditional LE of the cladode of Opuntia streptacantha produces an anti-hyperglycemic effect when administered before a glucose challenge, and this anti-hyperglycemic effect is maintained after filtering the extract.Administration of both plants can improve glycemic control by blocking the hepatic glucose output, especially in the fasting state. These data support the traditional use of the plants as “agua de uso”, a cold infusion of the plant consumed over the course of a day. 相似文献14.
Ethnopharmacological relevance
Pseuderanthemum palatiferum (Nees) Radlk (Acanthaceae) was first found in Northern Vietnam and expanded throughout the country including the Mekong Delta region. The leaves of this plant are recommended in folk medicine of Vietnam and Thailand for promoting and treating various diseases including hypertension, diarrhea, arthritis, hemorrhoids, stomachache, tumors, colitis, bleeding, wounds, constipation, flu, colon cancer, nephritis, and diabetes.Aim of the study
The hypoglycemic effect of an 80% ethanolic leaf extract from the leaves of Pseuderanthemum palatiferum (PPE) was investigated in normal and streptozotocin (STZ)-induced diabetic rats.Materials and methods
The PPE was administered daily and orally to the rats at the doses of 250, 500, and 1000 mg/kg body weight (b.w.) for 14 days. The levels of fasting plasma glucose (FPG), serum insulin, and biochemical data such as blood urea nitrogen (BUN), triglycerides (TG), total cholesterol (TC), high-density lipoprotein (HDL), low-density lipoprotein (LDL), and alkaline phosphatase (ALP) were evaluated. The hypoglycemic effect of PPE was compared to that of the known anti-diabetic drug glibenclamide (0.25 mg/kg b.w.).Results
FPG and serum insulin in normal rats were not significantly different from the control and test groups in all dosages. The treated diabetic rats which had received PPE and glibenclamide showed significantly (p < 0.05) decreased FPG and increased serum insulin levels at the end of the experiment. The hypoglycemic effect of PPE at the dose of 250 mg/kg b.w. was significantly (p < 0.05) more effective than that of glibenclamide. The serum insulin in PPE fed diabetic rats at the dose of 250 mg/kg b.w. was not different from those which had received glibenclamide, and this dose was significantly (p < 0.05) more effective than PPE at the doses of 500 and 1000 mg/kg b.w. while PPE increased HDL and decreased TC, TG, LDL, BUN and ALP in the diabetic rats.Conclusions
PPE has a beneficial effect in hyperglycemic rats and may prevent the complication of diabetes. 相似文献15.
Ethnopharmacological relevance
Zhen-wu-tang (ZWT) is a blended traditional Chinese medicine specifically used for various kidney diseases.Aim of the study
The present study is to evaluate the effects of ZWT on diabetic nephropathy and investigate the potential anti-diabetic mechanisms.Materials and methods
Streptozotocin (STZ)-induced diabetic rats were orally administrated ZWT (80,320 mg/kg b.w.) once a day, for a period of 12 weeks. Body weight, urinary volume, urine protein and blood biochemical parameters were measured every 3 weeks. At the end of the observation period, kidneys were isolated for histology, angiotensin II content determination, real time PCR and Western blot analyses.Results
ZWT (320 mg/kg b.w.) prevented body weight loss, reduced polyurea, urinary protein excretion, serum creatinine and blood urea nitrogen, although it did not alter the hyperglycemia. It ameliorated glomerular hypertrophy and expansion of the mesangial area, swell and effacement of foot process. It also suppressed the increased expression of angiotensin II, nephrin and podocin.Conclusions
Data from this study suggest that ZWT possess a protective effect on renal damage of STZ-induced diabetic nephropathy in rats, by suppressing hyperactivity of renal renin-angiotensin system that turns in to modulate renal nephrin and podocin expressions, thereby protecting podocyte from injury. 相似文献16.
Phytochemical analysis, antioxidant and anti-inflammatory activities of Phyllanthus simplex 总被引:1,自引:0,他引:1
Ethnopharmacological relevance
Phyllanthus simplex (Family: Euphorbiacae) is widely used in traditional medicines for treatment of various diseases including inflammation.Materials and methods
Petroleum ether extract (PSPE) and ethanol extract (PSEE) of the whole plant of Phyllanthus simplex were characterized for their total phenolics, tannins and flavonoids content. These extracts were standardized by HPTLC using phyllanthin and gallic acid respectively as markers. Antioxidant activity of extracts was evaluated by the DPPH, hydroxyl and superoxide radicals scavenging assay. The total antioxidant capacity of extracts was determined. Anti-inflammatory activity was evaluated by their effect on nitric oxide (NO) production in isolated rat peritoneal macrophages; carragennan-induced paw edema and formation of cotton pellet-induced granuloma in rats.Results
Abundance of phenolics was found in PSEE. Phyllanthin and gallic acid content in PSPE and PSEE were found to be 14.5 and 0.65% (w/w) respectively. PSEE showed concentration dependent significant scavenging of DPPH, hydroxyl and superoxide radicals with IC50 values 102.219, 171.485 and 24.73 μg/ml respectively. PSEE significantly inhibited NO production in isolated rat peritoneum macrophages. Moreover, it also exhibited significant inhibition of carragennan-induced paw edema (58.48 ± 0.028%, p < 0.001, at 6 h, 200 mg/kg oral dose) and cotton pellet-induced granuloma formation (45.671 ± 0.712%, p < 0.001, at 200 mg/kg oral dose). Anti-inflammatory activity of PSEE was found to be comparable to diclofenac sodium.Conclusions
Significant antioxidant and anti-inflammatory activities were found in PSEE which may be attributed to its high phenolic content. 相似文献17.
Ethnopharmacological relevance
Lignosus rhinocerus (known locally as ‘Tiger Milk mushroom’) is the most important medicinal mushroom used by the indigenous communities of Malaysia to treat fever, cough, asthma, cancer, food poisoning and as a general tonic. The sclerotium of the mushroom is the part with medicinal value. Lignosus rhinocerus was hitherto unexploited commercially because of limited supply. Recently, the mushroom was successfully cultivated.Materials and methods
Sprague Dawley rats (5 rats/group/sex) were fed orally with 250, 500 and 1000 mg/kg TM02, 1000 mg/kg TM03 as well as 1000 mg/kg wild type Lignosus rhinocerus sclerotial powder. Sclerotial powder was orally administered once daily and consecutively for 28 days. Body weight of each animal was measured and any gross behavioral change was observed daily. Hematological and clinical biochemical parameters as well as histopathological analysis were carried out on 29th day.Results
The results showed that oral administration of the sclerotial powder at daily dose of up to 1000 mg/kg had no adverse effect on the growth rate, hematological and clinical biochemical parameters (including renal and liver function parameters). Histological studies showed that the treatments did not induce any pathological changes in the liver, kidney, heart, spleen and lung of the animals.Conclusion
In conclusion, our results show that there was no treatment-related sub-acute toxicity in rats following 28-days oral administration of 250, 500 and 1000 mg/kg TM02, 1000 mg/kg TM03 as well as 1000 mg/kg wild type Lignosus rhinocerus sclerotial powder. As the highest tested dose of 1000 mg/kg was not associated with any toxicity concern, the NOAEL dose is higher than 1000 mg/kg. 相似文献18.
Vasconcelos CF Maranhão HM Batista TM Carneiro EM Ferreira F Costa J Soares LA Sá MD Souza TP Wanderley AG 《Journal of ethnopharmacology》2011,137(3):1533-1541
Ethnopharmacological relevance
The tea from the stem bark of Caesalpinia ferrea Martius (Leguminosae) has been popularly used in the treatment of diabetes in Brazil.Aim of the study
To investigate the hypoglycaemic properties and to elucidate the mechanisms by which the aqueous extract of the stem bark of Caesalpinia ferrea reduces blood glucose levels in streptozotocin-induced diabetic rats via the enzymatic pathways of protein kinase B (PKB/Akt), AMP-activated protein kinase (AMPK) and acetyl-CoA carboxylase (ACC).Materials and methods
The aqueous extract of the stem bark of Caesalpinia ferrea (300 and 450 mg/kg/day), vehicle and metformin (500 mg/kg/day) were administered orally to STZ-diabetic rats (n = 7/group) for 4 weeks. Changes in body weight, food and water intake, fasting glucose levels and oral glucose tolerance were evaluated. Phosphorylation (P) and the expression of Akt, AMPK and ACC in the liver and skeletal muscle were determined using Western blot.Results
The aqueous extract of the stem bark of Caesalpinia ferrea reduced blood glucose levels and improved the metabolic state of the animals. P-Akt was increased in the liver and skeletal muscle of the treated animals, P-AMPK was reduced only in the skeletal muscle of these animals and P-ACC was reduced in both when compared with untreated rats.Conclusion
The results indicate that the aqueous extract of the stem bark of Caesalpinia ferrea has hypoglycaemic properties and possibly acts to regulate glucose uptake in liver and muscles by way of Akt activation, restoring the intracellular energy balance confirmed by inhibition of AMPK activation. 相似文献19.
Mousumi Chakraborty 《Journal of ethnopharmacology》2010,132(1):316-320
Aim of this study
Mussel is well accepted as food all over India. Beside for its nutritive value, people residing in Kosi river basin, Bihar, India, consume a preparation of soup, made from the footpad of molluscan species, with the belief that it gives relief from signs and symptoms of joint pain and related problems. This study was designed to explore the preventive activity of Indian fresh water mussel (Lamellidens marginalis) aqueous extract oral supplementation in experimental arthritis model.Materials and methods
Arthritis was induced in male albino rats by intradermal injection of Freund's complete adjuvant in right hind footpad. Lamellidens marginalis extract (LME1, 500 mg/kg/day and LME2, 1 g/kg/day) peroral supplementation started from the 1st day after adjuvant injection and was continued for the subsequent 13 days. Severity of arthritis was evaluated from paw diameter, ankle diameter, paw weight, urinary hydroxyproline, glucosamine level, serum interleukin-1β, IL6, IL10, CINC1, TNFα level, lysosomal enzyme levels and from histopathological assessment.Results
Lamellidens marginalis extract supplementation significantly (p < 0.05) decreased paw diameter, ankle diameter, and paw weight in treated groups (LME1, 500 mg/kg/day and LME2, 1 g/kg/day) as compared with arthritic group. Urinary hydroxyproline, glucosamine level, serum IL1β, IL6, CINC1, TNFα, IL10 and lysosomal enzyme levels were restored significantly (p < 0.05) in treated groups (LME1, 500 mg/kg/day and LME2, 1 g/kg/day) as compared to arthritic group. Synovial membrane damage and neutrophil infiltration in histopathological examination was restored significantly by LME supplementation as compared to arthritic group.Conclusions
Thus, it might be concluded that experimental animals supplemented with Lamellidens marginalis extract were protected against the severity of disease progression in adjuvant induced arthritis. 相似文献20.
Sook Yee Hor Mariam AhmadElham Farsi Chung Pin LimMohd. Zaini Asmawi Mun Fei Yam 《Journal of ethnopharmacology》2011,137(3):1067-1076