Abstract：
OBJECTIVES:Solid dispersion formulation is the most promising strategy to improve oral bioavailability of poorly water soluble drugs. The aim of this study was to compare the effect of polyvinylpyrrolidone K30 (PVP) and poloxamer-188 (PLX) as carrier in solid dispersion formulations of celecoxib (CLX). MATERIALS AND METHODS:Solid dispersions of CLX:PVP or CLX:PLX were prepared at different ratios (2:1, 1:1, 1:2, 1:4, 1:6) by solvent evaporation and melting methods, respectively. The characterization of samples was performed using differential scanning calorimetery (DSC), X-Ray powder diffraction (XRPD) and Fourier transform infrared spectroscopy (FT-IR). The Gordon-Taylor equation was used to estimate the Tg of solid dispersion systems and the possibility of the interaction between CLX and PVP. Also, the dissolution rate of all samples was determined. RESULTS:DSC and XRPD analyses confirmed the presence of amorphous state of drug in solid dispersion systems. FT-IR studies showed CLX could participate in hydrogen bonding with PVP whilst no specific interaction between CLX and PLX was observed. Both PVP and PLX enhanced the dissolution rate of drug in solid dispersion samples. The dissolution rate was dependent on the ratio of drug: carrier. Interestingly, the solid dispersion samples of PLX at 2:1 and 1:1 drug: carrier showed slower dissolution rate than pure CLX, whilst these results were not observed for PVP. CONCLUSION:The effect of PVP on dissolution rate enhancement was more pronounced compared to the other carrier. Having a higher Tg and more effect on dissolution rate, PVP could be considered as a more suitable carrier compared to PLX in solid dispersion formulation of CLX.
journal_name
Iran J Basic Med Scijournal_title
Iranian journal of basic medical sciencesauthors
Homayouni A,Sadeghi F,Nokhodchi A,Varshosaz J,Garekani HAsubject
Has Abstractpub_date
2014-05-01 00:00:00pages
322-31issue
5eissn
2008-3866issn
2008-3874journal_volume
17pub_type
杂志文章abstract：OBJECTIVES:Lupus nephritis (LN) is frequently associated with a poor long-term prognosis. Renal biopsy is the diagnostic method of choice in this condition. Urine biomarkers have been mentioned in the diagnosis of LN. The study(,)s purpose was to evaluate the performance of urinary monocyte chemoattractant protein 1(UM...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：
更新日期：2012-11-01 00:00:00
abstract：OBJECTIVES:Acquisition of TNF-α resistance plays role in the onset and growth of malignant tumors. Previous studies have demonstrated that MCF-7 cell line and its doxorubicin resistant variant MCF-7/Adr are resistant against the cytotoxic effects of TNF-α. In this study, we investigated the role of Akt activation in re...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：10.22038/ijbms.2016.7924
更新日期：2016-12-01 00:00:00
abstract：OBJECTIVE(S):Adeno-associated virus type 2 (AAV2) vectors are widely used for both experimental and clinical gene therapy. A recent research has shown that the performance of these vectors can be greatly improved by substitution of specific surface-exposed tyrosine residues with phenylalanines. In this study, a fast an...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：
更新日期：2013-07-01 00:00:00
abstract：OBJECTIVES:Hepatitis C is a major cause of liver failure worldwide. Current therapies applied for this disease are not fully effective and produce side effects in most cases. Non-structural protein 3 helicase (NS3) of HCV is one of the key enzymes in viral replication and infection. Therefore, this region is a promisin...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：
更新日期：2015-02-01 00:00:00
abstract：OBJECTIVES:Human Cytomegalovirus (HCMV) remains a major morbidity and mortality cause in immuno suppressed patients. Therefore, significant effort has been made towards the development of a vaccine. In this study, the expression of the pp65 and gB fusion peptides and Fc domain of mouse IgG2a as a novel delivery system ...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：
更新日期：2016-04-01 00:00:00
abstract：OBJECTIVES:Lipocalin 2 (Lcn2) is a 25-kDa glycoprotein that has initially been extracted from neutrophil granules. Expression of Lcn2 is induced under various pathophysiological conditions. It is also known as an early marker of kidney and heart injury. High-level expression of recombinant Lcn2 neutrophil gelatinase-as...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：
更新日期：2012-05-01 00:00:00
abstract：Objectives:The preclinical reports have shown that specific probiotics like Bifidobacterium bifidum (B. bifidum) and Lactobacillus acidophilus (L. acidophilus) can be applied as the biotherapeutic agents in the inhibition or therapy of colorectal cancer via the modification of gut bacteria. In the previous studies, we ...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：10.22038/ijbms.2019.32624.7806
更新日期：2019-06-01 00:00:00
abstract：Objectives:Precision-cut tissue slices are considered an organotypic 3D model widely used in biomedical research. The comet assay is an important screening test for early genotoxicity risk assessment that is mainly applied on in vitro models. The aim of the present study was to provide a 3D organ system for determinati...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：10.22038/ijbms.2019.30056.7242
更新日期：2019-04-01 00:00:00
abstract：OBJECTIVES:Tadalafil can restore endothelial function and treat atherosclerosis. However, the effect of tadalafil on transplant arteriosclerosis remains unclear. In this study, we explore the effects of tadalafil on allograft vasculopathy. MATERIALS AND METHODS:Male Brow-Norway rats supplied aorta grafts for Male Lewi...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：
更新日期：2015-09-01 00:00:00
abstract：OBJECTIVES:Lectin-like low density lipoprotein receptor (LOX-1) has pivot role in vascular complications, which is upregulated in numerous pathological conditions. Since exercise has beneficial effects in prevention of hyperlipidemic complications, present study examined protective effects of aerobic exercise through r...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：
更新日期：2015-08-01 00:00:00
abstract：OBJECTIVES:Recently, we showed that some new synthetic compounds structurally related to cilostamide (4-(1,2-dihydro-2-oxoquinolin-6-hydroxy)- N-cyclohexyl-N-methylbutanamide), a selective phosphodiesterase 3 (PDE3) inhibitor, produce inotropic effect comparable to that of IBMX (3-isobutyl-1-methylxanthine), a non-sele...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：10.22038/IJBMS.2017.8831
更新日期：2017-06-01 00:00:00
abstract：Objectives:Cholinergic neurons are important neurons in the Pedunculopontine tegmental nucleus (PPT). In this study, nicotinic receptor of the PPT in central cardiovascular regulation in the anesthetized rat was evaluated. Materials and Methods:Saline, acetylcholine (Ach; doses: 90 and 150 nmol), hexamethonium (Hexa; ...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：10.22038/IJBMS.2018.25616.6319
更新日期：2018-04-01 00:00:00
abstract：OBJECTIVES:Intracerebral injection of bone marrow stromal cells (BMSCs) is being investigated as a therapeutic tool to prevent Alzheimer's disease (AD). Our aim was to investigate the effects of BMSCs by intrathecal injection in AD rat model. MATERIALS AND METHODS:BMSCs were obtained from the bone marrow of Wistar rat...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：
更新日期：2015-05-01 00:00:00
abstract：Objectives:This study aimed to investigate the glucose and lipid metabolism improving effect of the total flavonoids from Selaginella tamariscina (Beauv.) Spring (TFST) on db/db mice, and to study its mechanism of action. Materials and Methods:The db/db mice were divided into 5 groups: the normal group (NC), the diabe...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：10.22038/ijbms.2020.40532.9594
更新日期：2020-10-01 00:00:00
abstract：Objectives:Interleukin-36 receptor antagonist (IL-36Ra) is a new member of the IL-1 family that exhibits anti-inflammatory activity in a variety of inflammatory and immune diseases. Our purpose was to determine the effect of IL-36Ra on liver injury in a mouse hepatitis model induced by concanavalin A (ConA). Materials...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：10.22038/ijbms.2020.35614.8492
更新日期：2020-05-01 00:00:00
abstract：OBJECTIVES:Many cancer cells show significant resistance to drugs that kill drug sensitive cancer cells and non-tumor cells and such resistance might be a consequence of the difference in metabolism. Therefore, studying the metabolism of drug resistant cancer cells and comparison with drug sensitive and normal cell lin...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：
更新日期：2015-03-01 00:00:00
abstract：Objectives:A growing body of evidence indicates that rhomboid domain containing 1 (RHBDD1) plays an important role in a variety of physiological and pathological processes, including tumorigenesis. We aimed to determine the function of RHBDD1 in breast cancer cells. Materials and Methods:In this study, we used the Onc...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：10.22038/IJBMS.2018.29788.7191
更新日期：2018-11-01 00:00:00
abstract：OBJECTIVE(S):Staphylococcus aureus is both a successful human commensal and a major pathogen. In this study we investigated the genetic diversity of 26 S. aureus isolates recovered from human skin and urinary tract infections. MATERIALS AND METHODS:Typing procedure for the studied S. aureus isolates was performed base...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：
更新日期：2012-07-01 00:00:00
abstract：OBJECTIVES:To optimize the extraction method using response surface methodology, extract the phenolic compounds, and identify the antioxidant and biological properties of Stachys parviflora L. extracts. MATERIALS AND METHODS:Maceration and ultrasound-assisted extraction (UAE) (4, 7, 10 min treatment time, 40, 70, 100 ...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：
更新日期：2016-05-01 00:00:00
abstract：UNLABELLED:Objective(s) : Although bacteria and molds are the pioneering microorganisms for production of many enzymes, yet yeasts provide safe and reliable sources of enzymes with applications in food and feed. MATERIALS AND METHODS:Single xylanase producer yeast was isolated from plant residues based on formation of...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：
更新日期：2013-12-01 00:00:00
abstract：OBJECTIVE(S):Because of the high total phenolic contents of Feijoa sellowiana, its nephroprotective effect was determined in 3,4-methylene dioxymethamphetamine (MDMA) treated mice. MATERIALS AND METHODS:Animals received 10, 20 and 40 mg/kg doses of aqueous or methanol extract of F. sellowiana leaves, intra-peritoneall...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：
更新日期：2014-01-01 00:00:00
abstract：OBJECTIVE(S):Non-Hodgkin's lymphoma (NHL) is a lymphoproliferative malignancy in which cells undergo microscopic changes with unknown etiology, and risk factors such as age, sex, genetic and environmental factors are involved. The relationship between the presence of infectious agents and the development of lymphoproli...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：
更新日期：2013-03-01 00:00:00
abstract：OBJECTIVES:In food industry, the inhibition of tyrosinase is very important, because this enzyme catalyzes the oxidation of phenolic compounds found in fruits and vegetables into quinones, which contribute in undesirable color and taste of fruits and vegetables. Teucrium polium L. var. gnaphalodes (Lamiaceae), a wild-g...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：
更新日期：2016-08-01 00:00:00
abstract：OBJECTIVE(S):Garlic (Allium sativum L. family Liliaceae) is well known in Iran and its leaves, flowers, and cloves have been used in traditional medicine for a long time. Research in recent decades has shown widespread pharmacological effects of A. sativum and its organosulfur compounds especially Allicin. Studies carr...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章,评审
doi：
更新日期：2013-10-01 00:00:00
abstract：OBJECTIVES:The aim of the present study was to prepare, characterize, and evaluate solid lipid nanoparticles (SLNs) containing Zataria multiflora essential oil (ZEO). MATERIALS AND METHODS:In this study, Z. multiflora essential oil-loaded solid lipid nanoparticles (ZE-SLNs) were prepared to improve its efficiency in c...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：
更新日期：2016-11-01 00:00:00
abstract：OBJECTIVE(S):PDE3 has a functional role in insulin secretion and action. We investigated the metabolic effects of new synthetic PDE3 inhibitors (mc1, mc2, mc5 and mc6), on mice and hyperglycemic rat. MATERIALS AND METHODS:The test compound or solvent was injected subcutaneously to mice, for 7 days. On day 8, blood and...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：
更新日期：2012-07-01 00:00:00
abstract：Objectives:Recent evidence has shown underlying roles of gut dysbiosis and metabolic endotoxemia in obesity and its complications. Despite the large number of experimental and clinical researches performed on gut microbiota and obesity, no bibliometrics' study has been conducted so far. We aimed to assess the trend of ...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章,评审
doi：10.22038/ijbms.2018.30203.7281
更新日期：2019-01-01 00:00:00
abstract：Objectives:Hyperuricemia is a risk for cardiovascular and metabolic diseases, but the mechanism is ambiguous. Increased intestinal permeability is correlated with metabolic syndrome risk factors. Intestinal epithelial cells play a pivotal role in maintaining intestinal permeability. Uric acid is directly eliminated int...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：10.22038/ijbms.2020.44948.10482
更新日期：2020-06-01 00:00:00
abstract：Objectives:Panax ginseng (PG) widely used for its various pharmacological activities, including effects on diabetes and its complications. This study aims to investigate the effect of PG on mortality-related hypomagnesemia, hyperlactatemia, metabolic acidosis, and other diabetes-induced abnormalities. Materials and Me...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章
doi：10.22038/ijbms.2019.33223.7936
更新日期：2019-06-01 00:00:00
abstract：:Alzheimer's disease (AD) is a neurodegenerative disease and the leading cause of dementia worldwide. Epidemiological studies support the important role of diet in prevention and improvement of AD. In Traditional Persian Medicine (TPM), there is multiple dietary guidelines to prevent and alleviate dementia and memory i...
journal_title：Iranian journal of basic medical sciences
pub_type： 杂志文章,评审
doi：10.22038/ijbms.2019.36505.8694
更新日期：2019-10-01 00:00:00
