ABSTRACT
Diabetes is a condition where the fasting blood glucose level elevated above the normal range [80-120mg/dL]. This increase in blood glucose level may be due to the insulin deficiency i.e. insulin dependent diabetes mellitus [IDDM or type I] or due to insulin resistance i.e. non-insulin dependent diabetes mellitus [NIDDM or type II]. Diabetes leads to severe complications in the body even life treating complications e.g. nephropathy, retinopathy, neuropathy increased vascular permeability and delayed wound healing if left untreated. Different drugs are used for the treatment of diabetes mellitus, but synthetic drugs are costly and possess severe side effects. So, more emphasis is being placed on the use of traditional medicines because these sources have fewer side effects than the synthetics drugs and are economical. So the white skinned sweet potato [Ipomoea batatas L.] peel-off was selected for its anti-diabetic effect as well as to see its effects on biochemical parameters. Both young [3-4 months] and old [up to 1 year] Wistar rats were selected for current study. It was found that the aqueous extract of WSSP peel-off had shown beneficial effects. In addition to the decrease in blood glucose level it also decreased protein glycation level total cholesterol, triglycerides, and LDL-cholesterol. Increase in HDL-cholesterol was also observed after treating the rats with aqueous extract of Ipomoea batatas. Additionally, WSSP peel-off had also shown positive results on total protein concentration, albumin, globulin, and plasma enzymes [SGOT and SGPT]. Further research would be needed in order to purify the anti-diabetic components and it should be available in compact dose form for all diabetic patients
ABSTRACT
Lovastatin is a natural competitive inhibitor of 3-hydroxy-3-methyl glutaryl coenzyme-A [HMG-CoA] reductase and inhibits specifically rate limiting step in cholesterol biosynthesis. Further, lovastatin in comparison with synthetic drugs has no well-reported side effects. Four pure isolated filamentous fungal strains including Aspergillus niger IBL, Aspergillus terreus FFCBP-1053, Aspergillus flavus PML and Aspergillus nidulans FFCBP-014 have been cultured by solid state fermentation [SSF] using rice straw as substrate for the synthesis of lovastatin. After selecting Aspergillus terreus FFCBP-1053 as the best producer of lovastatin, various selected physical parameters including pH, temperature, inoculums size and moisture content were optimized through response surface methodology [RSM] under center composite design [CCD] for lovastatin hyper production. Maximum lovastatin production of 2070+/-91.5 was predicted by the quadratic model in the medium having moisture content 70% and pH 4.5 at 35 degree C which was verified experimentally to be 2140+/-93.25Mug/g DW of FM [microgram/gram dry weight of fermentation medium], significantly [P<0.05] high as compared to un-optimized conditions while it was noted that lovastatin production is independent on inoculum size [P>0.05] measured by spectrophotometer at 245 nm against standard. It was determined that optimized conditions for the hyper-production of lovastatin from fungal sources have a significant effect
ABSTRACT
The aim of the current study was to formulate and evaluate glipizide controlled release matrix tablets by means of different grades of polymer Ethoceland different co-excipients in order to evaluate their effect on drug release profiles during in vitro dissolution studies. Type II diabetes mellitus is usually treated with Glipizide. Glipizide belongs to sulfonylurea group. Gastric disturbance and severe hypoglycemia has been observed after taking glipizide orally. To overcome these problems, controlled release matrices were developed using different grades of ethyl cellulose polymer with a drug-polymer ratio of 1: 3by the direct compression method. The effect on drug release of partial replacement of lactose by different co-excipients, HPMC K100M, starch and CMC, were also studied. Diameter, thickness, hardness, friability, weight variations, drug contents of formulations were tested, these properties were within prescribed limits. Co-excipients and polymer containing formulations were compared to the without co-excipients and polymer containing formulations with respect to their release profile. After a 24-hour release study, ethyl cellulose polymer containing formulation exhibited prolonged release for 5-16 hours; however the polymer Ethocel standard FP 7 Premium without co-excipient containing formulation exhibited controlled release for 24 hours. Incompatibility was investigated between drugs, co-excipient DSC and polymer study was performed and any type of interaction was not found. Different kinetic models were used to study the release mechanism. An enhanced release rate was observed in case of excipients containing formulations
ABSTRACT
Albinism is a rare genetic disease associated with reduced melanin pigment biosynthesis in eyes, skin or hair. Clinically it is categorized, based on the affected tissue, into two types i.e ocular albinism [OA]; when hypopigmentation influence the retinal pigment epithelium leaving skin and hair unaffected, and oculocutaneous albinism [OCA]; when hypopigmentation occur in hair, skin and eye. Various genetic studies to date identified six genes [TYR, TYRP1, OCA2, SLC45A2, SLC24A5, C10orf11] and a locus [OCA5] for whom the candidate gene is yet to be known. All these reported genes, at the molecular level, are involved in melanin pigment biosynthesis. Among these reported genes, TYR and OCA2 are the most prevalent genetic factors of OCA in Pakistani population. The study will assist in understanding the molecular factors of OCA and melanin synthesis pathway to reduce its prevalence rate. The review aims to systematically reread and analyze the oculocutaneous albinism and its various types in the context of developed world as well as Pakistani community
Subject(s)
Humans , Genetics, Medical , Melanins , HypopigmentationABSTRACT
Diclofenac sodium [DCL-Na] conventional oral tablets exhibit serious side effects when given for a longer period leading to noncompliance. Controlled release matrix tablets of diclofenac sodium were formulated using simple blending [F-1], solvent evaporation [F-2] and co-precipitation techniques [F-3]. Ethocel[R] Standard 7 FP Premium Polymer [15%] was used as a release controlling agent. Drug release study was conducted in 7.4 pH phosphate buffer solutions as dissolution medium in vitro. Pharmacokinetic parameters were evaluated using albino rabbits. Solvent evaporation technique was found to be the best release controlling technique thereby prolonging the release rate up to 24 hours. Accelerated stability studies of the optimized test formulation [F-2] did not show any significant change [p<0.05] in the physicochemical characteristics and release rate when stored for six months. A simple and rapid method was developed for DCL-Na active moiety using HPLC-UV at 276nm. The optimized test tablets [F-2] significantly [p<0.05] exhibited peaks plasma concentration [C[max]=237.66 +/- 1.98] and extended the peak time [t[max]=4.63 +/- 0.24]. Good in-vitro in vivo correlation was found [R[2] =0.9883] against drug absorption and drug release. The study showed that once-daily controlled release matrix tablets of DCL-Na were successfully developed using Ethocel[R] Standard 7 FP Premium
Subject(s)
Animals , Cellulose/analogs & derivatives , Delayed-Action Preparations , In Vitro Techniques , RabbitsABSTRACT
The present study was conducted to formulate and evaluate flurbiprofen transdermal gel. A standard calibration curve was constructed to obtain a regression line equation to be used for finding out the concentration of drug in samples. Olive oil was used as penetration enhancer and was added in different concentrations to some selected formulations to see its enhancement effect on in vitro drug release profiles. The prepared gels were evaluated for several physico-chemical parameters to justify their suitability for topical use. The in vitro drug release studies were carried out by using Franz cell diffusion apparatus across both synthetic membrane and excised albino rabbit skin. In order to investigate the drug release mechanism a kinetic approach was made by employing Korsmeyer kinetic model to the in vitro drug release profiles of flurbiprofen. The flurbiprofen topical gels were successfully prepared and could be beneficial for topical use