• Journal of Pharmaceutical Investigation
• /
• v.12 no.2
• /
• pp.45-53
• /
• 1982

The effects of mixture of tween 20 and span 20 or span 80 on griseofulvin absorption in rabbit were studied. The plasma concentration of griseofulvin in blood samples was determined by high pressure liquid chromatographic procedure. Griseofulvin suspension with 0.05% surfactant increased mostly drug absorption and produced about two times higher plasma level of griseofulvin than that of the suspension with 1% and 0.1% surfactant. Surfactants with H.L.B. value 4.3 resulted $2.74{\mu}g/ml$ of maximum plasma levels of griseofulvin at 18 hours after its oral administration and surfactants with H.L.B. value 16.7 resulted $0.56{\mu}g/ml$ of peak plasma levels of griseofulvin at 1 hour after its oral administration.

• Journal of Pharmaceutical Investigation
• /
• v.17 no.1
• /
• pp.15-21
• /
• 1987

Effects of phenobarbital pretreatment on the pharmacokinetics of enterohepatic recirculating griseofulvin were investigated by comparing normal to bile duct cannulated rats and also the effects of enhanced endogeneous bile flow on the absorption of griseofulvin were studied by means of in situ recirculation method in phenobarbital-pretreated rats. Phenobarbital was administered orally for five days at the dose of 75 mg/kg/day. The influence of phenobarbital pretreatment on the absorption rate constant, area under the plasma concentration-time curve, maximum plasma concentration of orally administered griseofulvin was not found in bile duct cannulated rats. Decreased absorption clearance and apparent partition coefficient of griseofulvin in accordance with the amount of endogeneous bile juice seemed to be due to the decrease of thermodynamic activity of griseofulvin as bile forms the micelle with griseofulvin.

• YAKHAK HOEJI
• /
• v.30 no.6
• /
• pp.288-293
• /
• 1986

Effects of phenobarbital on the pharmacokinetics of griseofulvin were studied in rats. Phenobarbital was administered orally for five days at the dose of 75mg/kg/day. Absolute bioavailability of oral griseofulvin was significantly(p<0.005) reduced but total clearance(CL$_s$ was not changed by phenobarbital pretreatment. Absorption rate constant(K$_a$ and maximum plasma concentration(C$_{max}$) were significantly(p<0.05) reduced, and time to reach maximum plasma concentration(T$_{max}$) of griseofulvin was significantly(p<0.05) increased by phenobarbital pretreatment. Changed pharmacokinetics of griseofulvin seemed not to be due to induced enzyme activity by phenobarbital but to reduced GI absorption of griseofulvin.

• Journal of Microbiology and Biotechnology
• /
• v.12 no.3
• /
• pp.355-359
• /
• 2002

The Plackett-Burman experimental design was employed to evaluate the relative importance of medium constituents of each medium for enhanced griseofulvin production by Penicillium griseofulvum MTCC 1898 and Penicillium griseofulvum MTCC 2004. It was found that the medium constituents, sucrose, $K_2HPO_4,\;NaNO_3,\;and\;FeSO_4{\cdot}7H_2O$, significantly influenced the griseofulvin production by Penicillium griseofulvum MTCC 1898. In the case of Penicillium griseofulvum MTCC 2004, lactose, glucose, and $MnSO_4{\cdot}H_2O$ significantly influenced the griseofulvin production.

• Applied Biological Chemistry
• /
• v.35 no.5
• /
• pp.395-398
• /
• 1992

In order to study the influence of a 6'-methyl group in ring C of griseofulvin ${\underline{(1)}}$ on the fungicidal activity, 6'-methyl group was replaced with a larger phenyl group as $({\pm})-6'-phenylgriseofulvin$ ${\underline{(3)}}$, $({\pm})-6'-epiphenylgriseofulvin$ ${\underline{(4)}}$, synthesized by a Diels-Alder cycloaddition. Their biological activities were examined against Botrytis allii (IFO 9430) and B. cinerea (AHU 9573). $({\pm})-6'-Phenylgriseofulvin $ ${\underline{(3)}}$ showed high activity in $25\;{\mu}g/disc$.

• Journal of Microbiology and Biotechnology
• /
• v.12 no.3
• /
• pp.360-366
• /
• 2002

Central composite experimental design was employed to determine the optimal concentration of medium constituents for griseofulvin production by Penicillium griseofulvum MTCC 1898 and Penicillium griseofulvum MTCC 2004. The optimal concentration of sucrose, $K_2HPO_4,\;NaNO_3,\;and\;FeSO_4{\cdot}7H_2O$ were found to be 48.08 g/1, 1.228 g/1 , 2.7 g/1, and 0.011 g/1, respectively, for Penicillium griseofulvum MTCC 1898, and for Penicillium griseofulvum MTCC 2004, 23.52 g/1, 43.67 g/1, and 0.0434 g/1 of glucose, lactose, and $MnSO_4{\cdot}H_2O$, respectively. The yield of griseofulvin under optimal composition of medium constituents increased by 1.26 and 1.38 times than prior to optimization, for Penicillium griseofulvum MTCC 1898 and Penicillium griseofulvutn MTCC 2004, respectively.

• Journal of Microbiology and Biotechnology
• /
• v.15 no.1
• /
• pp.112-117
• /
• 2005

Abstract Griseofulvin has been used as an antifungal antibiotic for the treatment of mycotic diseases of humans and veterinary animals. The purpose of this work was to identify a griseofulvin-producing endophytic fungus from Abies holophylla and evaluate its in vivo antifungal activity against plant pathogenic fungi. Based on nuclear ribosomal ITS1-5.8SITS2 sequence analysis, the fungus was identified and labeled as Xylaria sp. F0010. Two antifungal substances were purified from liquid cultures of Xylaria sp. F0010, and their chemical identities were determined to be griseofulvin and dechlorogriseofulvin through mass and NMR spectral analyses. Compared to dechlorogriseofulvin, griseofulvin showed high in vivo and in vitro antifungal activity, and effectively controlled the development of rice blast (Magnaporthe grisea), rice sheath blight (Corticium sasaki), wheat leaf rust (Puccinia recondita), and barley powdery mildew (Blumeria graminis f. sp. hordei), at doses of 50 to 150 ${\mu}$g/ml, depending on the disease. This is the first report on the production of griseofulvin and dechlorogriseofulvin by Xylaria species.

• The Journal of the Korean dental association
• /
• v.25 no.7 s.218
• /
• pp.673-678
• /
• 1987

Oral lichen planus is a chronic inflammatory disease of adult onset. Current therapeutic modalities for severs oral erosive lichen planus are still generally unsatisfactory. A case of 53 year-old female patient with severe oral erosive lichen planus is reported in which the lesion showed the dramatic improvement without serious adverse effects upon using griseofulvin.

• Journal of Veterinary Clinics
• /
• v.18 no.1
• /
• pp.1-6
• /
• 2001

The aim of this study was to determine optimal therapeutic dose of antifungal agents for dermatophytes. Forty nine dermatophytes were isolated form dogs and cats showing skin lesions and were tested for their in vitro susceptibility to nystatin, griseofulvin, terbinafine, ketoconazole and fluconazole by broth microdilution test. Terbinafine showed the lowest MIC value among the antifungal agents tested, and MIC values ranged from 0.002 to 0.016 $\mu\textrm{g}$/ml. Fluconazole showed the highest MIC values among the antifungal agents tested, and MIC values ranged from 32 to 512 $\mu\textrm{g}$/ml. MIC values of nystatin, griseofulvin and ketoconazole ranged from 1.12 to 4.48 $\mu\textrm{g}$/ml, 0.5 to 4.0 $\mu\textrm{g}$/ml, and 1.6 to 12.8 $\mu\textrm{g}$/ml, resistant to griseofulvin, and that antifungal susceptibility test was needed to determine optimal therapeutic dose of antifungal agents for each dermatophyte.

• Archives of Pharmacal Research
• /
• v.11 no.3
• /
• pp.185-196
• /
• 1988

The inflence of hydrophilic vehicles on percutaneous absorption rate of griseofulvin was studied using intact skin of full thickness of hairless rat. The in vitro absorption rates were used as the characteristics for deciding the optimum formula of ointment vehicles. The optimum formula of vehicle compositions for maximum absorption rate was obtained from the polynomial regression equation and the two graphical techniques, contour graph and partial derivative graph. It was composed of sodium lauryl sulfate (1.65 W /W%), white petrolatum (16.5 W /W%), propylene glycol (12.0 W /W%), and stearyl alcohol (19.6W /W%). The experimental value obtained from the optimum formula and the prediction value were 33.99 and 33.87 ${\mu}g/\sqrt{min}$, respectively. From these results, it was believed that optimum formula for semisolid dosage forms could be obtained from the application of the optimization technique used in this study.