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Current Drug Delivery

Jose Luis Pedraz, Manoli Igartua, Rosa Maria, Sara Hernando
Nanomedicine is a field of science that employs materials in the nanometer scale. Specifically, the use of nanoparticles (NPs) has some medical applications due to their structure, for example, the ability to cross the biological barriers, and their effectiveness avoiding some drug delivery problems. Because of that, in the last years, the use of NPs has been raised as a workable solution for neurodegenerative diseases (ND) treatment [1,2]. NDs are characterized by a continuous structural and functional neuronal loss, usually correlated with neuronal death...
May 9, 2018: Current Drug Delivery
Giovanni Monastra, Simonetta Ferruzza, Yula Sambuy, Giulia Ranaldi, Daniela Ferrari
BACKGROUND: . Myo-inositol is a natural molecule with important therapeutic applications and an impaired oral absorption may result in a reduced clinical effect. Aim of this study was to determine if the combined oral administration of α-lactalbumin and myo-inositol in healthy subjects, could increase the plasma level of myo-inositol administered alone. In vitro studies on human differentiated intestinal Caco-2 cells were also conducted to identify the mechanisms involved in myo-inositol absorption...
May 8, 2018: Current Drug Delivery
Himanshu Bhatt, Sri Vishnu Kiran Rompicharla, Neeraja Komanduri, Aashma Shah, Sateja Paradkar, Balaram Ghosh, Swati Biswas
BACKGROUND: Solid lipid nanoparticles (SLNs) represent an affordable, easily scalable, stable and biocompatible drug delivery system with a high drug to lipid ratio which also improves solubility of poorly soluble drugs. OBJECTIVE: SLNs were developed by using glyceryl monostearate as the single lipid in presence of surfactant Poloxamer 188 and evaluated the efficiency of the SLNs to load the therapeutic cargo, curcumin (CUR). METHOD: The nano-formulation was optimized by Quality by Design approach to understand the effect of various process parameters on various quality attributes, including drug loadability, particle size and polydispersity...
May 3, 2018: Current Drug Delivery
Marcela Brito Oliveira, Jessica Bassi da Silva, Maiara Camotti Montanha, Elza Kimura, Andrea Diniz, Marcos Luciano Bruschi
BACKGROUND: Bladder cancer is the second type of malignant carcinoma of the urinary tract. The treatment is time-consuming and requires maintenance doses of the drug for long periods of time with important side effects. Curcumin has shown evident clinical advances in the treatment of cancer. The technology of microencapsulation and the use of mucoadhesive materials can contribute to modify the delivery and improve the bioavailability of curcumin. OBJECTIVE: The aim of this study was to design and characterize mucoadhesive microparticles containing curcumin using multivariate analysis and the spray-drying technique...
May 3, 2018: Current Drug Delivery
Subhasis Chakrabarty, Bijaya Ghosh, Tapan Kumar Giri, Jasmina Khanam
The work was aimed at extracting gabapentin by transdermal reverse iontophoresis to check its feasibility for noninvasive therapeutic drug monitoring. Gabapentin was delivered in phosphate buffer (pH 7.4) at a therapeutic concentration range of 2-10 µg/ml. The same media was also used in receiver compartment. Extractions were carried out under an electric field of 5 V (current intensity range 0.3 mA/cm2-0.5 mA/cm2), provided by a custom-made power source for a period of 4 h. Samples were withdrawn at hourly intervals and drug content was analyzed by HPLC...
May 3, 2018: Current Drug Delivery
Vasanthan Ravichandran, Venkitasamy Kesavan, Sandrine Cojean, Philippe M Loiseau, Athipettah Jayakrishnan
BACKGROUND: Amphotericin B (AmB), a polyene antibiotic used for the treatment of fungal and leishmanial infections is virtually insoluble in water and exhibits severe toxicity. AmB has been conjugated to various soluble polymers for improving its solubility and reducing its toxicity. Conjugating AmB to a polysorbate surfactant such as polyoxyethylene sorbitan monolaurate (Tween 20), was examined to improve its solubility and reduce its toxicity. METHODS: AmB was coupled to Tween 20 via carbamate linkage at 15 and 30 wt% concentrations in high yield by activating the hydroxyl groups of the surfactant using p- nitrophenyl chloroformate...
May 3, 2018: Current Drug Delivery
Muhammad Zia Ullah Khan, Petre Makreski, Ghulam Murtaza
The aim of present explorative study was to prepare and optimize finasteride loaded topical gel formulations by using three factor [propylene glycol (PG), Tween® 80, and sodium lauryl sulphate (SLS)], five level central composite design. Optimized finasteride topical gel formulation (F4), containing PG, Tween® 80, and SLS in a concentration of 0.8 mg, 0.4 mg and 0.2 mg, respectively, showed 6-fold higher values of cumulative drug release, flux, partition coefficient, input rate, lag time, and diffusion coefficient, when compared to control formulation without permeation enhancer...
May 2, 2018: Current Drug Delivery
Lakshmi Maurya, Vijayakumar Mahalingam Rajamanickam, Gopeshwar Narayan, Sanjay Singh
BACKGROUND: Vinorelbine bitartrate (VRL), a semi synthetic vinca alkaloid approved for breast cancer, has been proved to beneficial as first line and subsequent therapies. However, it's hydrophilic and thermo labile nature provides hindrance to oral clinical translation. OBJECTIVES: The current work focused on the application of DOE a modern statistical optimization tool for the development and optimization of a solid lipid nanoparticle (SLN) formulation that can encapsulate hydrophilic and thermolabile Vinorelbine bitartrate (VRL) to a maximum extent without compromising integrity and anticancer activity of the drug...
April 8, 2018: Current Drug Delivery
Ligia Santos Pedroso, Najeh Maissar Khalil, Rubiana Mara Mainardes
In this study, bovine serum albumin (BSA) nanoparticles coated with polysorbate-80 (PS-80) and containing amphotericin B (AmB) were developed using a coacervation method. The nanoparticles were spherical, had a uniform size distribution (polydispersity < 0.25), a small mean size (185 ± 5 nm), a high zeta potential (-38.0 ± 0.7 mV), and a high AmB encapsulation efficiency (93 ± 1%). The AmB release profile was prolonged and diffusion-controlled, resulting in a low degree of AmB aggregation in solution...
April 8, 2018: Current Drug Delivery
Muhammad Ubaid, Ghulam Murtaza
In this study, central composite factorial design was used for the preparation and optimization of chitosan/Na-alginate hydrogel films containing metformin via solvent evaporation technique. Low and high molecular weight (MW) chitosan was used as polymer in different concentrations while genipin was used as crosslinking agent. Drug release studies were performed in simulated gastric and intestinal fluids at pH 1.2 and 7.4 of formulated hydrogels. For low MW chitosan hydrogel, the highest drug release at pH 1...
April 8, 2018: Current Drug Delivery
Yao-Hua Ouyang, Wei Xu, Cheng-Kai Zhou, Fan Liu, Bin Li, Guo-Ping Yan, Lian Yang, Si Chen, Can Jiang
: Gadolinium diethylenetriaminepentaacetic di[5-(4'-amidophenyl)-10,15,20- tris(4'-sulfonatophenyl) porphyrin trisodium salt] (Gd-DTPA-2APTSPP) was synthesized by the reaction of diethylenetriaminepentaacetic dianhydride with 5-(4'-aminophenyl)-10,15,20-tris(4'-sulfonatophenyl) porphyrin and subsequently chelation with gadolium chloride. This gadolinium complex was characterized and its properties in vitro and in vivo were also evaluated. Compared with Gd-DTPA, Gd-DTPA-2APTSPP possessed high relaxivity r1, low cytotoxicity to HeLa cells and high enhanced signal intensities of the VX2 carcinoma in rabbits for a prolonged time...
April 8, 2018: Current Drug Delivery
Xue Han, Xiao Kuang, Zhenjie Wang, Xinyu Wang, Hongzhuo Liu
BACKGROUND: Hydroxyapatite(HA) was emerging as the most promising biomaterial owing to its excellent bioactivity, biocompatibility, and high compressive strength for segmental bone defects. However, due to the lack of synergistic signals of osteogenic cells or growth factors, attempts concerning HA have not achieved ideal therapeutical effect. OBJECTIVE: This work was intended to combine HA particles with nerve growth factor (NGF) to co-accelerate the bone repair...
March 19, 2018: Current Drug Delivery
Soad Ali Yehia, Sally Adel Abdel Halim, Mary Yosry Aziz
OBJECTIVE: Formulation of injectable in situ forming implant (ISI) systems of lornoxicam for dental and post operative pain management to decrease dosing frequency and increase patient compliance. METHOD: Polymeric in situ implant solutions were prepared using different concentrations and inherent viscosities of Poly-DL-lactide (PDL) or DL-lactide/glycolide copolymer (PDLG) using 22X4 factorial experimental design. Non polymeric systems were prepared using different concentrations of lipids like cetyl alcohol and stearyl alcohol and also sucrose acetate isobutyrate (SAIB) using 32 factorial experimental design...
March 19, 2018: Current Drug Delivery
Peddi Maharshi, Sachin Kumar Singh, Monica Gulati, Ankit Kumar Yadav, Varun Garg, Bimlesh Kumari, K Gowthamarajan
A major challenge in targeting orally administered drugs to colon is their passage through the long gastrointestinal path comprising highly variant conditions in terms of pH, viscosity, gut motility and microbial flora. Approaches of pH controlled release and microbially triggered release have proved to be successful in achieving colon targeting only to a partial extent. In an attempt to improve targeting, both these approaches have been combined together with the approach of liquisolid technology which, hitherto, remains unexplored for colon targeting...
March 19, 2018: Current Drug Delivery
Satvika Sharma, Ankush Parmar, Rishi Bhardwaj, Tanzeer Kaur
Apocynin has become a drug of choice in NADPH oxidase induced pathological conditions. Hyperoxaluria is one such pathological condition where NADPH oxidase is involved in eliciting renal injury. Recently apocynin has shown to reverse the transcriptome profile of the NADPH oxidase-associated genes and reduced oxidative burden in hyperoxaluric animals. The poor solubility of this drug creates certain apprehensions about its bioavailability. PLGA (Poly Lactic co-Glycolic Acid) encapsulation of drug nanoparticles have showed to induce sustain release and henceforth enhance the efficiency and bioavailability of drugs...
February 28, 2018: Current Drug Delivery
Pengbo Guo, Hui-Yi Xue, Ho-Lun Wong
Despite extended, aggressive use of conventional antibiotics, drug treatment of bone infections frequently fails as a combined result of the widespread of drug-resistant bacteria, poor accessibility of many antimicrobials to the deeper portion of the bones, the ease of biofilm formation on bone surface, and high risk of drug toxicity. Emerging therapeutic nanotechnology offers potential solutions to these issues. In recent years, a number of nanoantimicrobials, i.e. nanoscale devices with intrinsic antibacterial activities or capacity for delivering antibiotics, have been developed for the treatment and prevention of bone infections...
February 28, 2018: Current Drug Delivery
Runjhun Tandon, Vijay Luxami, Harmanjit Singh Dosanjh, Nitin Tandon, Kamaldeep Paul
Diabetes is a serious and chronic problem that can be attributed to the insufficient release of the insulin or when body does not respond to the insulin which is already present. This disease has been targeted for corrective action and implementation among four non-communicable diseases by world leaders according to WHO report. The prevalence of diabetes has been estimated to be double from 4.7% of adult population in 1980 to 8.5% in the present scenario. The estimated deaths due to this epidemic disease were 1...
February 28, 2018: Current Drug Delivery
Elisabetta Gavini, Maria Cristina Bonferoni, Giovanna Rassu, Antonella Obinu, Franca Ferrari, Paolo Giunchedi
Drug administration to the posterior segment of the eye has many challenges due to the natural barriers and consequent problems of low and unpredictable bioavailability. There is an increasing need for managing severe posterior eye diseases, such as age related macular degeneration, diabetic retinopathy, etc.: most of these diseases, if untreated, lead to blindness. Traditional ocular formulations and topical administrations are almost inefficient and the drug delivery to the back of the eye requires direct administrations through intravitreal injections of innovative drug delivery systems...
February 26, 2018: Current Drug Delivery
Koroush Semnani, Masoomeh Shams-Ghahfarokhi, Mehran Afrashi, Aref Fakhrali, Dariush Semnani
Eugenol, as the major phenolic component of clove essential oil due to its desired properties in medical field, was loaded into polyacrylonitrile (PAN) nanofibers with various percentages. Our main purpose in this study was to determine the in vitro antifungal activity of eugenol loaded on PAN nanofibers against Candida albicans as the most common causative agent for candidiasis. Also, the surface morphology and the mechanical properties of nanofibers were studied by scanning electron microscope (SEM) and a tensile tester, respectively...
February 26, 2018: Current Drug Delivery
Hassan Elsana, Svetlana Mysina, Emal Ali Elkordy, Jane Carr-Wilkinson, Amal Ali Elkordy
Gene therapy is an expanding field and it can treat genetic and acquired diseases. It was found that formulations with DNA: CM-β-CD (Carboxymethyl-beta-cyclodextrin): Pluronic-F127 1:3:3 and 1:3 DNA: CM-β-CD are the most stable formulations indicating high incorporation of DNA within CM-β -CD. Gel electrophoresis revealed DNA with low CM-β -CD concentration has formed a more stable complex. Samples 1:3 DNA: CM-β-CD and 1:3:3 DNA: CM-β-CD: Pluronic-127 show no DNA fragment suggesting good condensation of DNA inside cyclodextrin cavity...
February 25, 2018: Current Drug Delivery
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