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PHARMACOLOGY
Glucose-lowering, hepatoprotective and hypolipidemic activities of stem bark of
Ficus racemosa
in streptozotocin-induced diabetic Rats
F Ahmed, A Urooj
April-June 2009, 1(2):160-164
DOI
:10.4103/0975-1483.55749
The present study evaluated the antihyperglycemic, hepatoprotective, and hypolipidemic effects of
F. racemosa
bark powder and aqueous extract in streptozotocin-induced diabetic rats. Streptozotocin-induced diabetic rats (
n
= 6) were treated with
F. racemosa
Linn (Moraceae) bark powder (FRP) and aqueous extract (FRAE) for six weeks. Blood glucose was determined every 15 days using a portable glucometer. At the end of the study period, the rats were sacrificed and levels of serum glucose, protein, total cholesterol, triglycerides, AST, ALT, TBARS, and glutathione were determined as indicators of antihyperglycemic, hypolipidemic, and hepatoprotective activities, as well as of antioxidant potential. TBARS and glutathione levels were determined in the liver and the kidneys also. Both the
bark powder and aqueous extract of
F. racemosa
bark caused a significant reduction (
P
≤ 0.05) in blood glucose (54 and 66% respectively). A significant reduction (
P
≤ 0.05) was also observed in serum cholesterol and triglyceride levels to the control levels. The aqueous extract was more effective and caused a significant reduction (
P
≤ 0.05) in TBARS, AST, ALT levels compared to untreated diabetic rats. However, it did not reach control levels. A significant increase in glutathione concentrations over the control levels was also observed in rats treated with
F. racemosa
bark. It is concluded that
F. racemosa
bark has a significant hypolipidemic and hepatoprotective effect besides being a potent antihyperglycemic agent.
[ABSTRACT]
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237
Gastroprotective effect of medicinal plants from Chapada do Araripe, Brazil
Gerlania de Oliveira Leite, Antonia Rosangela Soares Penha, Glauberto Quirino da Silva, Aracelio Viana Colares, Fabiola Fernandes Galvao Rodrigues, Jose Galberto Martins Costa, Andre Luiz Herzog Cardoso, Adriana Rolim Campos
January-March 2009, 1(1):54-56
DOI
:10.4103/0975-1483.51881
Gastric ulcer is a serious gastrointestinal disorder that requires a well targeted therapeutic strategy. A number of drugs are available for the treatment of gastric ulcer, but clinical evaluation has shown incidence of relapses, side effects, and drug interactions. The search for novel molecules has been extended to herbal drugs that offer better protection and decreased relapse. The essential oils from
Croton zehntneri
(EOCZ) and
Vanillosmopsis arborea
(EOVA), the oil from
Caryocar coriaceum
pulp (OCC), the latex from
Himatanthus drasticus
(LHD), and the extract from
Stryphnodendron rotundifolium
(ESR) obtained from Chapada do Araripe, Cearα (Brazil) have been evaluated for cytoprotetive activity on ethanol-induced ulcer formation in mice. EOCZ, EOVA, OCC, and ESR were administrated by gavage at doses of 200 and 400 mg/kg and LDH, by the same way, at 0.2 and 0.4 mL/animal (n=8). Following 60 min, mice were given 0.2 mL of ethanol (96%) by gavage. Thirty minutes after the administration of ethanol, all groups were sacrificed and the gastric ulcer index was calculated by planimetry. Preliminary results suggest that all the plants tested showed significant activity. EOVA (6.47±1.91%*), OCC (8.86±2.45%*) and ESR (1.50±0.30%**) were the most active. Data are expressed as mean±s.e.m. of the lesioned area (%) and were analyzed by ANOVA and Student-Newman-Keul´s test (*
P
<0.05 and **
P
<0.01 vs. control). Phytochemical screening showed the presence of tannins, terpenes, and essential fatty acids, thus suggesting that these substances may be involved in the observed antiulcer activity.
[ABSTRACT]
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4
1,843
211
PHARMACOGNOSY
Antiurolithiatic activity of whole-plant hydroalcoholic extract of
Pergularia daemia
in rats
BA Vyas, RB Vyas, SV Joshi, DD Santani
January-March 2011, 3(1):36-40
DOI
:10.4103/0975-1483.76417
The whole-plant,
Pergularia daemia
(Family: Asclepediaceae), extract (50% alcohol) was investigated for its antiurolithiatic and diuretic activity. Ethylene glycol (0.75% in water) feeding resulted in hyperoxaluria as well as increased renal excretion of calcium and phosphate. Alcoholic extract (400 mg/kg) of
P. daemia
was given orally in curative and preventive regimens over a period of 28 days. Supplementation with extract significantly (
P
< 0.001) lowered the urinary excretion and kidney retention levels of oxalate, calcium and phosphate. Furthermore, high serum levels of urea nitrogen, creatinine and uric acid were significantly (
P
< 0.001) reduced by the extract. The results were comparable with the standard drug, cystone (750 mg/kg). The reduction of stone-forming constituents in urine and their decreased kidney retention reduces the solubility product of crystallizing salts such as calcium oxalate and calcium phosphate, which could contribute to the antiurolithiatic property of the extract. The extract exhibited significant diuretic activity at dose of 400 mg/kg body weight as evidenced by increased total urine volume and the urine concentration of Na
+
, and K
+
. These findings affirm assertions made regarding the effectiveness of the extract of this plant against urinary pathologies in the Indian folk medicine.
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4
2,723
57
Antimicrobial activity and brine shrimp lethality bioassay of the leaves extract of
Dillenia indica
linn
AS Apu, MA Muhit, SM Tareq, AH Pathan, ATM Jamaluddin, M Ahmed
January-March 2010, 2(1):50-53
DOI
:10.4103/0975-1483.62213
PMID
:21331191
The crude methanolic extract of
Dillenia
indica
Linn. (Dilleniaceae) leaves has been investigated
for the evaluation of antimicrobial and cytotoxic activities. Organic solvent (
n
-hexane, carbon tetrachloride and chloroform) fractions of methanolic extract and methanolic fraction (aqueous) were screened for their antimicrobial activity by disc diffusion method. Besides, the fractions were screened for cytotoxic activity using brine shrimp (
Artemia
salina
) lethality bioassay. Among the four fractions tested,
n
-hexane, carbon tetrachloride, and chloroform fractions showed moderate antibacterial and antifungal activity compared to standard antibiotic, kanamycin. The average zone of inhibition was ranged from 6 to 8 mm at a concentration of 400 µg/disc. But the aqueous fraction was found to be insensitive to microbial growth. Compared to vincristine sulfate (with LC
50
of 0.52 µg/ ml),
n
-hexane and chloroform fractions demonstrated a significant cytotoxic activity (having LC
50
of 1.94 µg/ml and 2.13 µg/ml, respectively). The LC
50
values of the carbon tetrachloride and aqueous fraction were 4.46 µg/ml and 5.13 µg/ ml, respectively. The study confirms the moderate antimicrobial and potent cytotoxic activities of
Dillenia
indica
leaves extract and therefore demands the isolation of active principles and thorough bioassay.
[ABSTRACT]
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[PubMed]
3
2,782
177
In vivo
antidiabetic and antioxidant potential of
Stephania hernandifolia
in streptozotocin-induced-diabetic rats
U Sharma, RK Sahu, A Roy, DK Golwala
July-September 2010, 2(3):255-260
DOI
:10.4103/0975-1483.66803
PMID
:21042481
Stephania hernandifolia
(Menispermaceae) is a medicinal plant, used by herbalists for treating various diseases, one of which is diabetes mellitus, in Darjeeling. However, its antidiabetic activity has not been scientifically investigated so far. The aim of this study, therefore, is to investigate the antidiabetic and antioxidant potential of the powdered corm of
Stephania hernandifolia
. This was tested in normal and Streptozotocin (STZ)-induced diabetic rats, using oral administration of ethanol and an aqueous extract (400 mg/kg body weight) of
Stephania hernandifolia
corm. After the oral administration of water and ethanol extracts at doses of 400 mg/kg body weight, blood glucose levels were monitored at specific intervals and it was found that they were significant lowered. Glibenclamide was used as a standard drug at a dose of 0.25 mg/kg. The experimental data revealed that both extracts has significant antihyperglycemic and antioxidant activity in Streptozotocin-induced rats compared to the standard drug. The antioxidant activity
in vitro
was measured by means of the 1, 1-diphenyl-2-picrylhydrazyl (DPPH) and Superoxide-free radical scavenging assay. Ascorbic acid, a natural antioxidant, was used as a control. The extracts of ethanol and aqueous were strongly scavenged DPPH radicals, with IC
50
being 265.33 and 217.90 μg/ml, respectively. Although the extracts of ethanol and aqueous were moderately scavenged, the superoxide radical were with IC
50
values of 526.87 and 440.89 μg/ml. The study revealed that the ethanolic extract exhibited more significant antidiabetic and antioxidant activity then the aqueous extract.
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3
1,791
122
PHARMACOLOGY
Aqueous extract of
Garcinia indica
choisy restores glutathione in type 2 diabetic rats
H Kirana, BP Srinivasan
July-September 2010, 2(3):265-268
DOI
:10.4103/0975-1483.66806
PMID
:21042483
Significant depletion of glutathione (GSH-reduced form) was observed in type 2 diabetes due to oxidative stress. Hence the present study was aimed to investigate a drug which restores GSH along with its anti-diabetic activity. Aqueous extract of
Garcinia indica
at a dose of 100 mg/kg and 200 mg/kg was given orally to streptozotocin-induced type 2 diabetic rats for a period of 4 weeks. At the end, parameters such as fasting blood glucose, postprandial blood glucose, and GSH in blood were analyzed. Aqueous extract of
G. indica
significantly decreased both the fasting and postprandial blood glucose in type 2 diabetic rats. The extract also restored the erythrocyte GSH in type 2 diabetic rats. Drug at higher dose, i.e. 200 mg/kg, had a more pronounced effect. Restoring the erythrocyte GSH, an intracellular anti-oxidant in diabetes, will be beneficial specially by preventing the risk of developing complications.
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2
1,763
66
PHARM ANALYSIS
Development and validation of spectrophotometric methods for the estimation of mesalamine in tablet dosage forms
KM Patel, CN Patel, B Panigrahi, AS Parikh, HN Patel
July-September 2010, 2(3):284-288
DOI
:10.4103/0975-1483.66789
PMID
:21042487
Three simple and sensitive visible spectrophotometric methods (A, B, and C) have been developed for the quantitative estimation of mesalamine in bulk drug and pharmaceutical dosage forms. Methods were based on the formation of colored chromogens, which were measured at 552 nm, 440 nm, and 494 nm, respectively. The results obtained with the proposed methods were found to be unsatisfactory with the labeled amounts when the tablet dosage forms were analyzed.
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2
2,681
109
PHARMACOLOGY
Anti-allergic activity of stem bark of
Myrica esculenta
Buch.-Ham. (Myricaceae)
KG Patel, NJ Rao, VG Gajera, PA Bhatt, KV Patel, TR Gandhi
January-March 2010, 2(1):74-78
DOI
:10.4103/0975-1483.62219
PMID
:21331196
Allergic diseases, such as allergic asthma, are hypersensitivity reactions initiated by immunological mechanisms.
Myrica
esculenta
(
M
.
esculenta
) is known traditionally in Ayurveda to possess anti-asthmatic activity. The present investigation was undertaken to evaluate the effect of crude extract of stem bark of
M
.
esculenta
(Family Myricaceae, commonly known as Kaiphal) on experimental allergic reactions. Experimental models studied were allergic pleurisy and vascular permeability induced by acetic acid in mice. Pretreatment with
M
.
esculenta
(75 mg/kg and 150 mg/kg, p.o.) significantly inhibited the eosinophil accumulation (
P
< 0.01) respectively in the pleural cavity.
M
.
esculenta
(75 and 150 mg/kg, p.o.) significantly inhibited the rise in plasma exudation (57.12% and 59.77%,
P
< 0.01) induced by acetic acid in mice. These findings demonstrate that the crude extract from the stem bark of
M
.
esculenta
possesses antiallergic activity. This activity may be mediated by reducing the release of mediators such as histamine, inhibition of mast cell degranulation, and inhibition of eosinophil accumulation thereby preventing the release of cytokines and chemokines.
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2
1,898
134
QUALITY ASSURANCE
Stability indicating high-performance liquid chromatography method for the estimation of artemether in capsule dosage forms
A Shrivastava, R Issarani, BP Nagori
January-March 2010, 2(1):79-84
DOI
:10.4103/0975-1483.62220
PMID
:21331197
A new simple, sensitive, precise, and accurate high-performance liquid chromatography (HPLC) method of analysis for artemether both as a bulk drug and in capsule formulations was developed and validated. The method employed mobile phase acetonitrile (ACN) and buffer in the ratio 65:35 of pH 6.5 adjusted with tryethylamine. The linear regression analysis data for the calibration plots showed good linear relationship with
r
2 = 0.9996 in the concentration range 250-750 µg/ml. The mean value slope and intercept were 9355.5 and -93.5, respectively. The method was validated for precision, accuracy, and recovery studies. Limit of detection (LOD) and Limit of quantitation (LOQ) for artemether were found to be 21.83-750 µg/ml, respectively. The method has been successfully applied in the analysis of marketed capsule formulations. The presented method was found to be reliable to separate all the degradents from all the stress conditions with resolution of more than 1.5 showing that it is a stability indicating method.
[ABSTRACT]
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[PubMed]
2
1,736
112
PHARMACEUTICS
Formulation and evaluation of extended-release solid dispersion of metformin hydrochloride
SA Patil, BS Kuchekar, AR Chabukswar, SC Jagdale
April-June 2010, 2(2):121-129
DOI
:10.4103/0975-1483.63147
PMID
:21264113
The purpose of this research was to formulate and characterize solid dispersion (SD) of metformin hydrochloride using methocel K100M as the carrier by the solvent evaporation and cogrinding method. The influence of drug polymer ratio on drug release was studied by dissolution tests. Characterization was performed by fourier transform spectroscopy (FTIR), ultraviolet, differential scanning calorimetry and X-ray powder diffractometry. The optimized formulation was subjected to accelerated stability testing as per ICH guidelines. Release data were examined kinetically. SD with 1:4 and 1:5 ratio of drug to polymer obtained by solvent evaporation and cogrinding were selected as the best candidates suitable for prolonged-release oral dosage form of metformin.
[ABSTRACT]
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[PubMed]
2
3,852
347
Fast dissolving sublingual films of ondansetron hydrochloride: Effect of additives on
in vitro
drug release and mucosal permeation
M Koland, VP Sandeep, NR Charyulu
July-September 2010, 2(3):216-222
DOI
:10.4103/0975-1483.66790
PMID
:21042474
Ondansetron hydrochloride, a 5 HT3 antagonist is a powerful antiemetic drug which has oral bioavailability of 60% due to hepatic first pass metabolism and has a short half-life of 5 h. To overcome the above draw back, the present study was carried out to formulate and evaluate fast dissolving films of ondansetron hydrochloride for sublingual administration. The films were prepared from polymers such as polyvinylalcohol, polyvinyl pyrrolidone, Carbopol 934P in different ratios by solvent casting method. Propylene glycol or PEG 400 as plasticizers and mannitol or sodium saccharin as sweeteners were also included. The IR spectral studies showed no interaction between drug and polymer or with other additives. Satisfactory results were obtained when subjected to physico-chemical tests such as uniformity of weight, thickness, surface pH, folding endurance, uniformity of drug content, swelling index, bioadhesive strength, and tensile strength. Films were also subjected to
in vitro
drug release studies by using USP dissolution apparatus.
Ex vivo
drug permeation studies were carried out using porcine membrane model.
In vitro
release studies indicated 81-96% release within 7 min and 66-80% within 7 min during
ex vivo
studies. Drug permeation of 66-77% was observed through porcine mucosa within 40 min. Higher percentage of drug release was observed from films containing the sweeteners. The stability studies conducted for a period of 8 weeks showed no appreciable change in drug content, surface pH, and
in vitro
drug release.
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[PubMed]
2
5,796
245
PHARMACOGNOSY
Pharmacognostical studies and evaluation of anti-inflammatory activity of
Ficus bengalensis
linn
VV Patil, RB Pimprikar, VR Patil
January-March 2009, 1(1):49-53
DOI
:10.4103/0975-1483.51879
Pharmacognostical parameters for the leaves of
Ficus bengalensis
were studied with the aim of drawing the pharmacopoeial standards for this species: macroscopical and microscopical characters, physio-chemical constants, extractive values with different solvents, fluorescence analysis of dry powder, its reaction after treatment with chemical reagents under visible light, and UV light at 254 nm and 366 nm. Preliminary phytochemical studies on the
Ficus bengalensis
leaves were conducted. The determination of these characters will aid future investigators in their pharmacological analyses of this species. The anti-inflammatory effect of ethanolic and petroleum ether extracts of
ficus bengalensis
were evaluated in experimental animals. We have determined the anti-inflammatory activity of ethanolic and petroleum ether extracts of the bark of
Ficus bengalensis
by oral administration of doses of 300 and 600 mg/kg/day of body weight to healthy animals. The extracts were studied for their anti-inflammatory activity in carrageenan-induced hind paw edema in rats and the paw volume was measured plethysmometrically at 0 3h after injection. The ethanolic and petroleum ether extracts of
Ficus bengalensis
, significantly reduced (
P
<0.05) carrageenan-induced paw edema in rats. The ethanolic and petroleum ether extracts showed a greater anti-inflammatory effect compared with the standard drug Indomethacin. The present results indicated the ethanolic extract of
Ficus bengalensis
exhibited more significant activity than petroleum ether in the treatment of inflammation.
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2
4,004
585
PHARMACEUTICS
Preparation and
in vitro
evaluation of ethylcellulose coated egg albumin microspheres of diltiazem hydrochloride
TP Shailesh, PD Vipul, JK Girishbhai, CJ Manish
January-March 2010, 2(1):27-34
DOI
:10.4103/0975-1483.62209
PMID
:21331187
The aim of the present investigation was to develop sustained release ethylcellulose-coated egg albumin microspheres of diltiazem hydrochloride (DH) to improve patient compliance. The microspheres were prepared by the w/o emulsion thermal cross-linking method using different proportion of the polymer to drug ratio (1.0:1.0, 1.0:1.5 and 1.0:2.0). A 3
2
full factorial design was employed to optimize two independent variables, polymer to drug ratio (
X
1 ) and surfactant concentration (
X
2 ) on dependent variables, namely % drug loading, % drug release in 60 min (
Y
60 ) and the time required for 80 % drug release (
t
80 ) were selected as dependable variable. Optimized formulation was compared to its sustained release tablet available in market. The polymer to drug ratio was optimized to 1:1 at which a high drug entrapment efficiency 79.20% ± 0.7% and the geometric mean diameter 47.30 ± 1.5 mm were found. All batches showed a biphasic release pattern; initial burst release effect (55% DH in 1 h) and then were released completely within 6 h.
In
situ
coating of optimized egg albumin DH microspheres using 7.5% ethylcellulose significantly reduced the burst effect and provided a slow release of DH for 8-10 h. Finally, it was concluded that ethylcellulose-coated egg albumin DH microspheres is suitable for oral SR devices in the treatment of angina pectoris, cardiac arrhythmias, and hypertension due to their size and release profile.
[ABSTRACT]
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2
2,441
223
PHARMACOLOGY
Assessment of lipid lowering effect of
Sida rhomboidea.Roxb
methanolic extract in experimentally induced hyperlipidemia
DK Patel, KA Patel, UK Patel, MC Thounaojam, RN Jadeja, Ansarullah , GS Padate, SP Salunke, RV Devkar, AV Ramachandran
July-September 2009, 1(3):233-238
DOI
:10.4103/0975-1483.57070
This inventory scrutinizes the effect of methanolic extract of
Sida rhomboidea.Roxb
(SR) on high fat diet-induced hyperlipidemia in male
Charles foster
rats. The changes in body weight, food and water intake, feed efficiency ratio and whole weight of liver and epididymal fat pad were recorded in both control and experimental groups. In addition to the above parameters, the changes in plasma lipid profile, hepatic lipid profile, fecal total lipids (TL), total cholesterol (TC), triglycerides (TG), cholic acid (CA) and deoxycholic acid (DCA) and activity levels of plasma SGOT and SGPT were also assessed in both control and experimental groups. Plasma TC, TG, low density lipoproteins (LDL), very low density lipoproteins (VLDL) and free fatty acids (FFA) levels were decreased along with significantly increased plasma HDL levels. Hepatic TL, TC, TG were significantly decreased in HL+SR400 group, whereas fecal TL, TC, TG, CA and DCA contents were higher after feeding SR to hyperlipidemic rats, probably due to reduced intestinal absorption and effective elimination of TC, TG and bile acids through feaces. The results obtained with methanolic extract of SR are in accordance with our previous study using crude extract. Hence, this study further adds to the existing information that the polar fraction of SR is equally potent as the crude extract. This report provides an ideal platform for the isolation, purification and characterization of known bioactive/novel compounds present in the polar fraction of SR.
[ABSTRACT]
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2
1,545
187
PHARMACEUTICS
Biodegradable chitosan-based ambroxol hydrochloride microspheres: Effect of cross-linking agents
HH Gangurde, NV Chavan, AS Mundada, DV Derle, S Tamizharasi
January-March 2011, 3(1):9-14
DOI
:10.4103/0975-1483.76414
The objective of this study was to investigate the influence of type of cross-linking method used on the properties of ambroxol hydrochloride microspheres such as encapsulation efficiency, particle size, and drug release. Microspheres were prepared by solvent evaporation technique using chitosan as a matrix-forming agent and cross-linked using formaldehyde and heat treatment. Morphological and physicochemical properties of microspheres were then investigated by scanning electron microscopy (SEM), X-ray diffractometry (XRD), differential scanning calorimetry (DSC), and Fourier-transform infrared spectroscopy (FTIR) spectroscopy. The cross-linking of chitosan takes place at the free amino group because of formation of imine bond as evidenced by FTIR. The DSC, XRD, and FTIR analysis showed that chitosan microspheres cross linked by heating were superior in properties and performance as compared to the microspheres cross-linked using formaldehyde. SEM results revealed that heat-treated microspheres were spherical, discrete having smooth, and porous structure. The particle size and encapsulation efficiencies of the prepared chitosan microspheres ranged between 10.83-24.11 μm and 39.73-80.56%, respectively. The drug release was extended up to 12 h, and the kinetics of the drug release was obeying Higuchi kinetic proving diffusion-controlled drug release.
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2,296
4
EDITORIAL
Why do we need quality articles, what are we going to do with?
KK Mueen Ahmed
April-June 2011, 3(2):81-82
DOI
:10.4103/0975-1483.80289
PMID
:21731350
[FULL TEXT]
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[PubMed]
2
819
10
PHARMACOGNOSY
Antibacterial activity of
Lantana camara
Linn and
Lantana montevidensis
brig extracts from Cariri-Ceará, Brazil
FS Barreto, EO Sousa, AR Campos, JGM Costa, FFG Rodrigues
January-March 2010, 2(1):42-44
DOI
:10.4103/0975-1483.62211
PMID
:21331189
The use of medicinal plants with therapeutics properties represents a secular tradition in different cultures, mainly in underdeveloped countries.
Lantana
camara
Linn and
Lantana
montevidensis
Briq (Verbenaceae) found in tropical and subtropical areas around the world are popularly known as "camará" or "chumbinho." In popular medicines, both plants are used as antipyretic and carminative and in the treatment of respiratory system infections. In this study, the antibacterial activity of the ethanolic extracts of
L
.
camara
and
L
.
montevidensis
leaves and roots against gram-positive and gram-negative strains standard and multi-resistant bacteria isolated from clinical material are presented. In order to determine the minimal inhibitory concentration (MIC), the microdilution method was used. The extracts demonstrated antibacterial activity against all tested bacteria, but the
L
.
montevidensis
fresh leaves extract present the best result against
P
.
aeruginosa
(MIC 8 µg/mL) and against multi-resistant
E
.
coli
(Ec 27) (MIC 16 µg/mL). These results drive new researches with both species in order to isolate the constituents responsible for the activity.
[ABSTRACT]
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2
2,459
178
PHARMACEUTICAL ANALYSIS
Development and validation of TLC-densitometry method for simultaneous determination of telmisartan and amlodipine besylate in bulk and tablets
NR Vekariya, MB Patel, GF Patel, RB Dholakiya
July-September 2009, 1(3):259-263
DOI
:10.4103/0975-1483.57076
A rapid, simple, and selective high performance thin layer chromatographic method was developed and validated for simultaneous estimation of telmisartan and amlodipine besylate in pharmaceutical dosage forms. The method employed TLC aluminium plates precoated with silica gel 60F-254 as the stationary phase. The solvent system comprised: tetrahydrofuran: dichloroethane: methanol: ammonia solution (6.0:2.0:1.0:0.4 v/v). This system was found to give compact spots for both telmisartan (Rf value of 0.22 ± 0.02) and amlodipine besylate (Rf value of 0.45 ± 0.02). Spectrodensitometric scanning-integration was performed at a wavelength of 326 nm. The polynomial regression data for the calibration plots showed good linear relationship with r2 = 0.9993 in the concentration range of 1,200-7,200 ng for telmisartan and 400-1,400 ng for amlodipine besylate with r2 = 0.9996. The method was validated for precision, accuracy, ruggedness, and recovery. The minimum detectable amounts were found to be 149.41 ng and 53.07 ng for telmisartan and amlodipine besylate, respectively. The limits of quantitation were found to be 452.78 ng for telmisartan and 160.83 ng for amlodipine besylate. Statistical analysis proves that the method is reproducible and selective for the simultaneous estimation of telmisartan and amlodipine besylate.
[ABSTRACT]
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2,638
331
A new RP-HPLC method for simultaneous estimation of nebivolol hydrochloride and hydrochlorthiazide in dosage forms
Y Gupta, A Shrivastava, D Duggal, A Patel, S Agrawal
July-September 2009, 1(3):264-269
DOI
:10.4103/0975-1483.57078
A new RP-HPLC method has been developed for the simultaneous estimation of nebivolol hydrochloride and hydrochlorothiazide in pharmaceutical dosage forms, using ultra violet (UV) detector. Elution was carried out using a mobile phase consisting of acetonitrile and potassium dihydrogen phosphate buffer (pH 3.2 ± 0.1) in the ratio of 50:50 v/v and flow rate was set on 1.2 ml/min at 282 nm. The retention time for hydrochlorothiazide and nebivolol hydrochloride was found 3.57 and 6.66 mins, respectively. The method was found to be linear in the range of 8-32 mg/ml and 20-80 mg/ml for nebivolol hydrochloride and hydrochlorothiazide, respectively. In the linearity study, regression equation and coefficient of correlation for nebivolol hydrochloride and hydrochlorothiazide were found to be: y = 284761x + 215452, r = 0.9995; and y = 698395+105272, r = 0.9998, respectively.
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1
3,290
313
PHARMACEUTICAL MANAGEMENT
Evaluation of web sites for quality and contents of Asthma patient education
AN Nagappa, KG Sam, F Zarrin, H Saurabh, G Partha, K Pathak
July-September 2009, 1(3):278-283
DOI
:10.4103/0975-1483.57075
The patients and health care professionals worldwide depend largely on the internet for health care information due to its easy ubiquitous accessibility and economy, unlike the print media. The clinicians, health care professionals and asthma patients depend on the internet resources. The authentication of information on the web is an unmet demand. There is a growing need to provide quality information to the patients who desire education in the internet. As there is no system of validation of quality of information on internet, there can be a possibility of misleading or biased information on the internet. The present study aimed to evaluate the quality and content of information of websites providing patient education of asthma. Google search engine were used to identify 192 websites providing education on asthma, among which 42 were analyzed by Health on the Net Foundation Code of Conduct (HON code); Core Educational Concepts and Health Summit Working Group (HSWG) guidelines. On the basis of core educational concepts and HSWG criteria, websites were graded as excellent, good and average. Among the 42 websites, the HON code compliance was found to be very low (19%). A majority of the sites were compliant to basic HSWG criteria while lacking in few key elements. The HSWG scores were affected by development factors, and higher among those developed from public organizations of developed countries with non commercial interest. HSWG criteria and information on missing core educational concepts of HON code must be incorporated for an enhanced quality of information for asthma patient education.
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EDITORIAL
White paper on J Young Pharm Statistics JYP: Where do we stand !!!
KK Mueen Ahmed
January-March 2010, 2(1):1-2
DOI
:10.4103/0975-1483.62204
PMID
:21331182
[FULL TEXT]
[PDF]
[CITATIONS]
[PubMed]
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779
170
PHARMACEUTICS
Assessment of dissolution profile of marketed aceclofenac formulations
T Soni, N Chotai
January-March 2010, 2(1):21-26
DOI
:10.4103/0975-1483.62208
PMID
:21331186
Statistical comparison of dissolution profiles under a variety of conditions relating to formulation characteristics, lot-to-lot, and brand-to-brand variation attracts interest of pharmaceutical scientist. The objective of this work is to apply several profile comparison approaches to the dissolution data of five-marketed aceclofenac tablet formulations. Model-independent approaches including ANOVA-based procedures, ratio test procedure, and pair wise procedure. The ratio test includes percentage, area under the curve, mean dissolution time, while the pair wise procedure includes difference factor (
f
1 ), similarity factor (
f
2 ), and Rescigno index. In the model-dependent approach, zero order, first order, Hixson-Crowell, Higuchi, and Weibull models were applied to the utilization of fit factors. All the approaches were applicable and useful. ANOVA with multiple comparison tests was found to be sensitive and discriminating for comparing the profiles. Weibull parameters were more sensitive to the difference between two release kinetic data in terms of curve shape and level.
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210
In vitro
evaluation of novel sustained release microspheres of glipizide prepared by the emulsion solvent diffusion-evaporation method
P Phutane, S Shidhaye, V Lotlikar, A Ghule, S Sutar, V Kadam
January-March 2010, 2(1):35-41
DOI
:10.4103/0975-1483.62210
PMID
:21331188
The objective of the current investigation is to reduce dosing frequency and improve patient compliance by designing and systematically evaluating sustained release microspheres of Glipizide. An anti-diabetic drug, Glipizide, is delivered through the microparticulate system using ethyl cellulose as the controlled release polymer. Microspheres were developed by the emulsion solvent diffusion-evaporation technique by using the modified ethanol,-dichloromethane co-solvent system. The polymer mixture of ethyl cellulose and Eudragit
®
S100 was used in different ratios (1:0, 1:1, 2:3, 1:4 and 0:1) to formulate batches F1 to F5. The resulting microspheres were evaluated for particle size, densities, flow properties, morphology, recovery yield, drug content, and
in vitro
drug release behavior. The formulated microspheres were discrete, spherical with relatively smooth surface, and with good flow properties. Among different formulations, the fabricated microspheres of batch F3 had shown the optimum percent drug encapsulation of microspheres and the sustained release of the Glipizide for about 12 h. Release pattern of Glipizide from microspheres of batch F3 followed Korsmeyers-peppas model and zero-order release kinetic model. The value of 'n' was found to be 0.960, which indicates that the drug release was followed by anomalous (non-fickian) diffusion. The data obtained thus suggest that a microparticulate system can be successfully designed for sustained delivery of Glipizide and to improve dosage form characteristics for easy formulation.
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358
PHARMACOLOGY
Evaluation of wound healing effect of topical phenytoin on excisional wound in albino rats
AA Hasamnis, BK Mohanty, Muralikrishna , S Patil
January-March 2010, 2(1):59-62
DOI
:10.4103/0975-1483.62215
PMID
:21331193
Objectives:
Wound healing is a significant healthcare problem in today's medical practice. Despite extensive treatment modalities that are supposed to hasten the wound healing process, the outcomes of existing methods are far from optimal. One such agent that has been tried previously and found controversial in wound healing is phenytoin. In this study, the wound-healing efficacy of phenytoin was investigated in albino rats.
Materials and
Methods:
20 male Wistar albino rats were subjected to excisional wounds measuring 500 mm
2
on the back and then randomized to two groups (n = 10): Control group (A) and treatment group (B). The control group received no drug treatment till the end of the study. 1% Phenytoin cream was applied to the wounds of rats in the group B and continued till the 16
th
day of the study. The areas of wounds were measured on the Days 4, 8, 12, and 16 of the experiment. The percentages of the healing wounds were calculated by Walker formula after measurement of the wound area. The total number of days required for complete epithelization of wounds was noted in each group.
Results:
Statistically significant reduction (
P
<0.05) in average wound area was seen in Group B (P value=0.0017, 0.0001, 0.0001, 0.0001), respectively, on Days 4, 8, 12, and 16 of the experiment in comparison to Group A. The average number of days required for complete epithelization of wound area was less in Group B as compared to Group A (P=0.0120). The difference was statically significant.
Conclusion:
In the present study, topical phenytoin accelerated healing of excisional wound in albino rats.
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Comparative study of
Erythrina indica
Lam. (Febaceae) leaves extracts for antioxidant activity
SS Sakat, AR Juvekar
January-March 2010, 2(1):63-67
DOI
:10.4103/0975-1483.62216
PMID
:21331194
The present study was designed to investigate the antioxidant activity of aqueous and methanol extracts of
Erythrina
indica
Lam leaves by
in vitro
methods viz. 1, 1-Diphenyl-2-Picrylhydrazyl, nitric oxide radical scavenging activity, and inhibition of lipid peroxidation by thiobarbituric acid reactive substances (TBARS) method on isolated rat liver tissues. Quantitative analysis of antioxidative components like total amount of phenolics, flavonoids, and flavonols were estimated using the spectrophotometric method. Linear regression analysis was used to calculate the IC
50
value. Results showed that the aqueous and methanol extracts exhibited significant DPPH radicals scavenging activity with an IC
50
value 342.59 ± 19.59, 283.24 ± 12.28 µg/mL respectively. Nitric oxide radicals were significantly scavenged by the aqueous and methanol extracts (IC
50
= 250.12 ± 10.66; 328.29 ± 3.74 µg/mL). Lipid peroxidation induced by the Fe
2+
was inhibited by the aqueous extract with low IC
50
value (97.29 ± 2.05 µg/mL) as compared to methanol extract (IC
50
= 283.74 ± 5.70 µg/mL). Both the extracts were exhibited similar quantities of total phenolics. Total flavonoids were found to be in higher quantities than total flavonols in aqueous extract as compared to methanol extract. From the results, it is concluded that the aqueous and methanol extracts of
E
.
indica
leaves possesses significant antioxidant activity that may be due to the presence of flavonoids and related polyphenolic compounds.
[ABSTRACT]
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© Journal of Young Pharmacists | Published by
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Online since 20
th
April, 2009
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