Investigations of Acacia modesta Wall. leaves for in vitro anti‑diabetic, proliferative and cytotoxic effects

The leaves of Acacia modesta Wall. have been shown to possess diverse pharmacological properties. Therefore, we aimed at evaluating anti-diabetic, cytotoxic and proliferative effects of extracts of Acacia modesta Wall. leaves. After evaluating the primary and secondary metabolites, anti-diabetic activity of various extracts was assessed by α-amylase inhibition, glucose uptake by yeast cells and non-enzymatic glycosylation of hemoglobin assay. Cytotoxicity and proliferative potential was assessed by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) and short term proliferation assays, respectively, using human liver carcinoma cell line, HepG2. Among other extracts, chloroform extract exhibited 34.16% inhibition of α-amylase, 90.65% inhibition of hemoglobin glycosylation and 94.75% glucose uptake employing α-amylase inhibition, non-enzymatic glycosylation of hemoglobin and glucose uptake by yeast cells assays, respectively. Moreover, extracts exhibited no significant effects on HepG2 cell viability and proliferation. So, this data suggested that chloroform extract of leaves of Acacia modesta Wall., exhibited higher anti-hyperglycemic activity in comparison to extracts in other solvents, while no extract demonstrated cytotoxic and proliferation effects when tested using HepG2 cell line

PHARMACOGNOSTICAL AND PHYTOCHEMICAL STUDIES OF OXALIS CORNICULATA

The present study aimed to perform pharmacognostic, physicochemical and phytochemical investigations on crude powders and different types of extracts of various parts of Oxalis corniculata (Family: Oxalidaceae). The sections of different parts of the plant were stained and examined using a light microscope. Powders of different parts were also examined under light microscope. The behavior of the powders under ultraviolet light was also investigated, before and after treating with certain reagents. The powders were analyzed for the determination of proximate parameters, primary metabolites and Fourier Transform Infrared (FTIR) spectra. The extracts of different parts were investigated for primary and secondary metabolites. FTIR spectra of leaves stem and fruit showed bands at 3435–3400 cm-1 , 2918 cm1 , 1654–1651 cm-1 and 1052–1049 cm-1 , however, the fingerprint region of the spectrum indicated the difference in chemical constituents. The stained cross-sections of different parts and their powder’s microscopy, TLC profiles and primary and secondary metabolites showed distinct pharmacogostic features that could be used for identification. The observed moisture content values of leaves and stems were 5.5% and 6.0%, respectively which showed less quantity of moisture in the crude powders. The results of the present study may be used for the identification of the plant.&nbsp

Evaluating the antidiabetic and antioxidant properties of 5- benzyl-1,3,4-oxadiazole-2-thiol

Purpose: To evaluate 5-Benzyl-1,3,4-oxadiazole-2-thiol (OXPA) for antidiabetic and antioxidant properties. Methods: Antidiabetic activity was evaluated using three in vitro models, glucose uptake by yeast cells, alpha amylase inhibition assay and hemoglobin glycosylation inhibition assays. Antioxidant potential was determined by DPPH radical scavenging, reducing power and lipid peroxidation assays. Results: OXPA showed antidiabetic activity in all the three models. The activity of the compound was comparable with that of metronidazole in glucose uptake by yeast cells, but the alpha amylase inhibition activity of the compound was slightly lower than that of acarbose, whereas the hemoglobin glycosylation inhibition activity of the compound was higher than that of vitamin E. DPPH free radical and hydrogen peroxide scavenging activity of the compound was comparable with that of vitamin C. In reducing power assay, the activity of the compound was lower than that of vitamin C (p > 0.05). Conclusion: The results of antidiabetic and antioxidant activity indicate that OXPA may be a drugcandidate for treating both diabetes and its associated oxidative stress

QUANTIFICATION OF SINENSETIN IN EXTRACTS OF ORTHOSIPHON STAMINEUS USING HIGH PERFORMANCE THIN-LAYER CHROMATOGRAPHY

The present study aimed to develop a high performance thin layer chromatography method for the determination of sinensetin and apply it to standardize the extracts Orthosiphon stamineus. The samples and a series of standards were applied in duplicate on silica gel plate, which was then developed using mobile phase comprising chloroform and ethyl acetate (6:4, v/v) to a distance of 5 cm. Afterwards, the plate was dried and subjected to densitometry at 366 nm for the quantification of sinensetin. The limit of detection (LOD) and limit of quantification (LOQ) was found to be 0.05 and 0.50 µg/ml, respectively. The method showed linearity in a range of 0.50-100.00 µg/ml with correlation coefficient 0.9988. The recovery, intra- and inter day accuracy were found to be 95.67-97.65, 97.64-99.54 and 97.83-98.57%, respectively, with relative standard deviation (RSD) less than 5%. The extracts contained sinensetin from 0.470-1.335 mg/g/. The results of this study indicate that the developed method is sensitive, reliable, repeatable and reproducible and may be applied to standardize extracts of Orthosiphon stamineus

Bryophyllum pinnatum: BOTANICAL DESCRIPTION, VERNACULAR NAMES, PARTS USED, TRADITIONAL USES, PHYTOCHEMICAL AND PHRMACOLOGICAL ACTIVITIES

Bryophyllum pinnatum (Family: Crassulaceae) is a traditional herb that has widely been used for removal of kidney stones and is found to possess a number of pharmacological activities such as antiviral, antipyretic, antimicrobial, anti-inflammatory, antitumor, hypocholesterolemic, antioxidant, diuretic, antiulcer, styptic, antidiabetic, astringent, antiseptic, antilithic, cough suppressant, anticancer, antihypertensive, fungitoxic and uterine relaxant. The plant contains flavonoids, tannins, anthocyanins, glycosides, alkaloids, phenols, bufadienolides, saponins, coumarins, carotenoids, sitosterols, quinines, tocopherol and lectins. The flavonoids rutin, quercetin, luteolin and luteolin 7-O-β-d-glucoside detected in the plant might be a responsible factor for the anti-inflammatory effect. Diuretic and antioxidant activity of the plant could be responsible for its wide use against urolithiasis. Anthocyanidines could be responsible for the antimicrobial activity of the plant. Kaempferol 3-O-α-l-arabinopyranosyl (1→2) α-l-rhamnopyranoside) and two other polar flavonoids (quercetin 3-O-α-l- arabinopyranosyl (1→2) α-l-rhamnopyranoside and 4′, 5-dihydroxy-3′, 8-dimethoxyflavone 7-O-β-d- glucopyranoside) are responsible for the antileshmanial activity. Bufodienolides are found to have cytotoxic property and hence might be responsible for the anticancer effect. The present study is undertaken to update and ease the researchers to get a comprehensive summary of the plant regarding its botanical description, common name, parts used, traditional uses, phytochemical evaluation and pharmacological activities

Ameliorating effect of Malva Neglecta on hyperglycemia and hyperlipidemia in diabetic rats

The plant, Malva neglecta wallr., is widely consumed for medicinal and nutritional purposes. The current study was carried out to assess the hypoglycemic and antihyperlipidemic potential of aqueous methanolic extract of M. neglecta. Chemical evaluation of the extract was performed by high pressure liquid chromatography. Oral glucose tolerance test (OGTT) was done in diabetic rats pre-exposed to 250, 500 and 750 mg/kg plant extract via the oral route. For hypoglycemic and biochemical study, the same therapy was administered to alloxan induced diabetic rats for 14 days. The standard controlgroup received Glibenclamide (5 mg/kg). Ferulic acid, p-coumaric acid and other phenolic acids were detected and estimated in the extract. Administration of the plant extract significantly reduced blood glucose level in diabetic rats subjected to OGTT. The plant extract lowered the fasting blood glucose and alpha amylase, and prevented the damage to pancreas. It also corrected dyslipidemia in diabetic animals following 14 days therapy. Hence, this experimental study establishes the fact that M. neglecta exhibited significant antidiabetic and antihyperlipidemic activities in alloxan induceddiabetic rats

Investigations of Acacia modesta Wall. leaves for in vitro anti-diabetic, proliferative and cytotoxic effects

ABSTRACT The leaves of Acacia modesta Wall. have been shown to possess diverse pharmacological properties. Therefore, we aimed at evaluating anti-diabetic, cytotoxic and proliferative effects of extracts of Acacia modesta Wall. leaves. After evaluating the primary and secondary metabolites, anti-diabetic activity of various extracts was assessed by α-amylase inhibition, glucose uptake by yeast cells and non-enzymatic glycosylation of hemoglobin assay. Cytotoxicity and proliferative potential was assessed by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) and short term proliferation assays, respectively, using human liver carcinoma cell line, HepG2. Among other extracts, chloroform extract exhibited 34.16% inhibition of α-amylase, 90.65% inhibition of hemoglobin glycosylation and 94.75% glucose uptake employing α-amylase inhibition, non-enzymatic glycosylation of hemoglobin and glucose uptake by yeast cells assays, respectively. Moreover, extracts exhibited no significant effects on HepG2 cell viability and proliferation. So, this data suggested that chloroform extract of leaves of Acacia modesta Wall., exhibited higher anti-hyperglycemic activity in comparison to extracts in other solvents, while no extract demonstrated cytotoxic and proliferation effects when tested using HepG2 cell line

Chemical and pharmacological comparison of modern and traditional dosage forms of <i>Joshanda</i>

<p>Recently, a traditional remedy (<i>Joshanda)</i> has been replaced largely by modern ready-to-use dosage forms, which have not been compared to the original remedy. Therefore, the present study aimed to compare a number of modern dosage forms with traditional remedy. Seven brands, 3 batches each, were compared with a Lab-made formulation with reference to analytical (proximate analyses, spectroscopic and chromatographic metabolomes) and pharmacological profiles (anti-inflammatory and antibacterial activities). Chemical and pharmacological differences were found between Lab-made <i>Joshanda</i> and modern dosage forms. Such variations were also found within the brands and batches of modern formulations (<i>p</i> < 0.05). The Lab-made <i>Joshanda</i> showed significantly higher pharmacological activities as compared to modern brands (<i>p</i> ). The results of the present study indicate that modern dosage forms are unstandardised and less effective than the traditional remedy. Characteristic profiles obtained from Lab-made <i>Joshanda</i> may be used as reference to produce comparable dosage forms.</p