Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 23
Filter
Add more filters










Publication year range
1.
Adv Drug Deliv Rev ; 205: 115174, 2024 Feb.
Article in English | MEDLINE | ID: mdl-38161056

ABSTRACT

Onychomycosis continues to be the most challenging disease condition for pharmaceutical scientists to develop an effective drug delivery system. Treatment challenges lie in incomplete cure and high relapse rate. Present compilation provides cumulative information on pathophysiology, diagnostic techniques, and conventional treatment strategies to manage onychomycosis. Novel technologies developed for successful delivery of antifungal molecules are also discussed in brief. Multidirectional information offered by this article also unlocks the panoramic view of leading patented technologies and clinical trials. The obtained clinical landscape recommends the use of advanced technology driven approaches, as a promising way-out for treatment of onychomycosis. Collectively, present review warrants the application of novel technologies for the successful management of onychomycosis. This review will assist readers to envision a better understanding about the technologies available for combating onychomycosis. We also trust that these contributions address and certainly will encourage the design and development of nanocarriers-based delivery vehicles for effective management of onychomycosis.


Subject(s)
Onychomycosis , Humans , Onychomycosis/diagnosis , Onychomycosis/drug therapy , Onychomycosis/microbiology , Administration, Topical , Antifungal Agents/therapeutic use , Drug Delivery Systems
2.
AAPS PharmSciTech ; 20(3): 100, 2019 Feb 05.
Article in English | MEDLINE | ID: mdl-30721373

ABSTRACT

Beta-carotene (BC), a red-colored pigment found in plants and animals, is one of the most extensively investigated carotenoids due to its provitamin-A, antioxidant, and anticancer properties. The anticancer activity of BC through oral administration is severely affected due to its low bioavailability and oxidative degradation. The present study aimed to formulate and characterize solid lipid nanoparticles (SLNs) of BC for enhanced bioavailability and therapeutic efficacy. Beta-carotene-loaded solid lipid nanoparticles (BC-SLNs) were prepared employing different combinations of glyceryl monostearate and gelucire. The characterization studies were performed for particle size, morphology, release behavior, and stability. BC-SLNs were also studied for in vitro cytotoxicity in human breast cancer cell lines (MCF-7) and pharmacokinetic studies in Wistar rats. The cytotoxicity studies confirmed that encapsulation of BC within the lipid bilayers of nanoparticles did not affect its anticancer efficacy. An improved anticancer activity was observed in BC-SLNs as compared to the free BC. BC-SLNs enhanced the bioavailability of BC on oral administration by sustaining its release from the lipid core and prolongation of circulation time in the body. Similarly, area under the curve (AUCtotal) enhanced 1.92-times more when BC was incorporated into SLNs as compared to free BC. In conclusion, solid lipid nanoparticles could be an effective and promising strategy to improve the biopharmaceutical properties of carotenoids for anticancer effects.


Subject(s)
Antineoplastic Agents/administration & dosage , Drug Carriers/administration & dosage , Nanoparticles/administration & dosage , beta Carotene/administration & dosage , Administration, Oral , Animals , Antineoplastic Agents/chemistry , Antineoplastic Agents/metabolism , Biological Availability , Cell Survival/drug effects , Cell Survival/physiology , Drug Carriers/chemistry , Glycerides/administration & dosage , Glycerides/chemistry , Glycerides/metabolism , Humans , Lipids , MCF-7 Cells , Male , Nanoparticles/chemistry , Nanoparticles/metabolism , Particle Size , Rats , Rats, Wistar , beta Carotene/chemistry , beta Carotene/metabolism
3.
Int J Pharm ; 546(1-2): 97-105, 2018 Jul 30.
Article in English | MEDLINE | ID: mdl-29715533

ABSTRACT

The work entails a novel strategy of formulating the lycopene loaded whey protein isolate nanoparticles (LYC-WPI-NPs) solely using the rational blend of biomacromolecule without using equipment-intensive techniques. The LYC-WPI-NPs were fabricated as a substantial drug delivery platform, with maximum entrapment, spatial and controlled release manners, exceptional plasma concentration, and perspective for discrepancy delivery of therapeutics. Prepared nano-formulations were measured in ultra-fine size (100-350 nm) with sphere-shaped. The percent lycopene entrapment of prepared LYC-WPI-NPs was estimated in the range to 50 and 65%. In vitro percent cumulative release study demonstrated deaden and extended release i.e. approximately 75% following 16th h. The in vitro percent cell survival (cytotoxicity study) of prepared nanoparticles was evaluated against MCF-7 breast cancer cells by MTT based colorimetric assay. Sub-cellular localization of lycopene when delivered by LYC-WPI-NPs was assessed by HPLC (high performance liquid chromatography). The WPI-NPs enhance the oral bioavailability of lycopene by controlling its release from nano-formulation and facilitating its absorption through lymphatic pathways. Prophylactic anticancer efficacy of LYC-WPI-NPs was evaluated thereafter on experimentally induced breast cancer animal model. Conclusively, it may quite reasonable that lycopene loaded protein nanoparticles are competent to improve the biopharmaceutical attributes of lycopene and demonstrated prophylactic anticancer activity, decrease tumor proliferation and increase the survival rate of treated animals, thus signifying their feasible usefulness in cancer therapeutic and intervention.


Subject(s)
Antineoplastic Agents/administration & dosage , Carotenoids/administration & dosage , Drug Carriers/administration & dosage , Nanoparticles/administration & dosage , Whey Proteins/administration & dosage , Administration, Oral , Animals , Antineoplastic Agents/chemistry , Antineoplastic Agents/pharmacokinetics , Biological Availability , Carotenoids/chemistry , Carotenoids/pharmacokinetics , Cell Survival/drug effects , Drug Carriers/chemistry , Drug Carriers/pharmacokinetics , Drug Liberation , Female , Gastric Juice/chemistry , Humans , Intestinal Secretions/chemistry , Lycopene , MCF-7 Cells , Mammary Neoplasms, Experimental/drug therapy , Nanoparticles/chemistry , Rats, Wistar , Whey Proteins/chemistry , Whey Proteins/pharmacokinetics
4.
Nanomedicine (Lond) ; 13(8): 825-847, 2018 04.
Article in English | MEDLINE | ID: mdl-29528278

ABSTRACT

AIM: The aim of the current study was to investigate the therapeutic efficacy of cationic-charged bilayered nanoemulsion for topical delivery of fusidic acid in eradicating methicillin-resistant Staphylococcus aureus (MRSA) bacterial burn wound infection. MATERIALS & METHODS: The developed carriers were characterized for particle size, antibacterial activity, cell viability assay in HaCat cell lines, rheological profile, ex vivo and in vivo studies, namely, full thickness MRSA 33591 murine burn wound infection via topical route. RESULTS: The developed cationic bilayered nanogel offered enhanced drug permeation, reduction in bacterial load and enhanced wound contraction along with faster re-epithelialization in burn wounds. CONCLUSION: The results encourage the exploration of the potential of cationic nanogel in treating resistant microorganisms such as MRSA, especially for application in burn wound infection.


Subject(s)
Burns/drug therapy , Methicillin-Resistant Staphylococcus aureus/drug effects , Nanoparticles/administration & dosage , Staphylococcal Infections/drug therapy , Administration, Topical , Animals , Anti-Bacterial Agents/administration & dosage , Anti-Bacterial Agents/chemistry , Burns/microbiology , Burns/pathology , Cations/administration & dosage , Cations/chemistry , Emulsions/administration & dosage , Emulsions/chemistry , Fusidic Acid/administration & dosage , Fusidic Acid/chemistry , Humans , Methicillin-Resistant Staphylococcus aureus/pathogenicity , Mice , Microbial Sensitivity Tests , Nanoparticles/chemistry , Staphylococcal Infections/microbiology , Staphylococcal Infections/pathology
5.
Drug Discov Today ; 23(4): 763-770, 2018 Apr.
Article in English | MEDLINE | ID: mdl-29317341

ABSTRACT

Several randomized clinical trials have divulged that administration of antioxidants during chemotherapy decreases the effectiveness of treatment. Hence, the characteristic feature of this article is extensive assessment of putative benefits and potential risks of natural and synthetic antioxidant supplementation, administered with chemotherapy, based upon the available preclinical and clinical data. After analyzing mixed results, it was concluded that current FDA guidelines should be followed before supplementing antioxidants during cytotoxic treatment. Nevertheless, contradictory experimental animal models opposing human clinical trials discourage the concurrent administration of antioxidants ostensibly owing to the possibility of tumor protection and reduced survival.


Subject(s)
Antioxidants/administration & dosage , Antioxidants/adverse effects , Neoplasms/drug therapy , Animals , Clinical Trials as Topic , Dietary Supplements/adverse effects , Humans , Randomized Controlled Trials as Topic
6.
Artif Cells Nanomed Biotechnol ; 46(sup1): 402-412, 2018.
Article in English | MEDLINE | ID: mdl-29361842

ABSTRACT

Beta carotene (ßC) loaded nanoparticles of zein (ßC-NPs) were developed using modified phase separation technique. ßC-NPs were prepared using different zein concentration and optimized formulation was selected on the basis of micromeritics properties and entrapment efficiency. Further, ßC-NPs were evaluated for in vitro release, in vitro cell-survival, cellular localization and apoptosis induced in MCF-7 cells. The combined effect of the ßC and its nanoparticulate counterpart with MTX was evaluated thereafter for cytotoxicity and apoptotic activity in MCF-7 cells. In comparison to free ßC, the ßC-NPs demonstrated noteworthy improvement in various biopharmaceutical attributes viz Cmax (∼2.3-folds), AUCtotal (2.7-folds), t1/2 (∼1.5 folds) and MRT (∼1.5 folds), further indicating the remarkable increment in oral bioavailability of ßC after incorporation in zein nanoparticles. The anti-tumour potential of prepared ßC-NPs and effects of free ßC and ßC-NPs were investigated upon anticancer efficacy of methotrexate (MTX) in experimentally induced breast cancer rat model. Protective role of ßC on MTX-associated hepatic toxicity in wistar rats was also determined using haematological and histopathological approaches. In a nutshell, zein nanoparticles improved the cellular uptake, cytotoxicity and exhibited enhanced oral biopharmaceutical performance of ßC. This combination regimen could also be promising platform to facilitate the therapeutic benefits of anticancer agents.


Subject(s)
Breast Neoplasms/pathology , Drug Carriers/chemistry , Methotrexate/chemistry , Methotrexate/pharmacology , Zein/chemistry , beta Carotene/chemistry , Animals , Apoptosis/drug effects , Biological Availability , Biological Transport , Cell Survival/drug effects , Drug Liberation , Female , Humans , MCF-7 Cells , Methotrexate/pharmacokinetics , Methotrexate/toxicity , Rats , Rats, Wistar
7.
Drug Deliv Transl Res ; 8(2): 398-413, 2018 04.
Article in English | MEDLINE | ID: mdl-28224375

ABSTRACT

The primary aim of the present study was to develop lanolin-based organogel with enhanced delivery potential and reduced skin irritation for the treatment of hyperkeratotic lesions and scaling. The drug was encapsulated in the lipidic bilayers of organogel. The values of particle size, polydispersity index (PDI), and zeta potential of the developed carrier system was found to be 257.5 nm, 0.272, and -24.9 mV, respectively. The system was pseudoplastic in nature with the yield value of 2.3078 Pa. The skin permeation studies exhibited superiority of the prepared lanolin-based organogel formulation over the conventional gel formulation (CGF). Further, the dermatokinetic studies also confirmed better permeation and enhanced skin bioavailability of SA to epidermis as well as dermis vis-à-vis the CGF. In conclusion, the developed organogel system not only improved the delivery profile of SA but also reduced the skin irritant potential. The current findings can provide a suitable alternative for the development of an effective topical formulation of SA for the treatment of hyperkeratotic lesions.


Subject(s)
Drug Carriers/administration & dosage , Excipients/administration & dosage , Keratolytic Agents/administration & dosage , Lanolin/administration & dosage , Salicylic Acid/administration & dosage , Skin Absorption , Administration, Topical , Aminoquinolines , Animals , Disease Models, Animal , Drug Carriers/chemistry , Drug Carriers/pharmacokinetics , Excipients/chemistry , Excipients/pharmacokinetics , Gels , Imiquimod , Keratolytic Agents/chemistry , Keratolytic Agents/pharmacokinetics , Keratosis/chemically induced , Keratosis/drug therapy , Keratosis/pathology , Lanolin/chemistry , Lanolin/pharmacokinetics , Male , Mice, Inbred BALB C , Salicylic Acid/chemistry , Salicylic Acid/pharmacokinetics , Skin/drug effects , Skin/metabolism , Skin/pathology
8.
Drug Discov Today ; 23(5): 960-973, 2018 05.
Article in English | MEDLINE | ID: mdl-29129804

ABSTRACT

Galactosylated nanocarriers have recently emerged as viable and versatile tools to deliver drugs at an optimal rate specifically to their target tissues or cells, thus maximizing their therapeutic benefits while circumventing off-target effects. The abundance of lectin receptors on cell surfaces makes the galactosylated carriers suitable for the targeted delivery of bioactives. Additionally, tethering of galactose (GAL) to various carriers, including micelles, liposomes, and nanoparticles (NPs), might also be appropriate for drug delivery. Here, we review recent advances in the development of galactosylated nanocarriers for active tumor targeting. We also provide a brief overview of the targeting mechanisms and cell receptor theory involved in the ligand-receptor-mediated delivery of drug carriers.


Subject(s)
Drug Carriers , Galactose , Nanoparticles , RNA, Small Interfering/administration & dosage , Animals , Asialoglycoprotein Receptor/metabolism , Drug Carriers/administration & dosage , Drug Carriers/chemistry , Drug Discovery , Galactose/administration & dosage , Galactose/chemistry , Humans , Ligands , Nanoparticles/administration & dosage , Nanoparticles/chemistry , Nanotechnology
9.
Nanomedicine (Lond) ; 12(15): 1851-1872, 2017 Aug.
Article in English | MEDLINE | ID: mdl-28703643

ABSTRACT

AIM: This work was intended to investigate the targeting potential of fructose-tethered lipid-polymeric hybrid nanoparticles (F-BC-MTX-LPHNPs) co-loaded with beta carotene (BC) and methotrexate (MTX) in breast cancer therapeutics and find out the possible protective role of BC on MTX-induced toxicity. MATERIALS & METHODS: F-BC-MTX-LPHNPs were fabricated using self-assembled nano-precipitation technique. Fructose was conjugated on the surface of the particles. The in vitro cytotoxicity, sub-cellular localization and apoptotic activity of F-BC-MTX-LPHNPs were evaluated against MCF-7 breast cancer cells. The antitumor potential of F-BC-MTX-LPHNPs was further studied. RESULTS & CONCLUSION: Outcomes suggested that F-BC-MTX-LPHNPs induced the highest apoptosis index (0.89) against MCF-7 cells. Following 30 days of treatment, the residual tumor progression was assessed to be approximately 32%, in animals treated with F-BC-MTX-LPHNPs. F-BC-MTX-LPHNPs are competent to selectively convey the chemotherapeutic agent to the breast cancers. Beta carotene ameliorated MTX-induced hepatic and renal toxicity.


Subject(s)
Antineoplastic Agents/chemistry , Breast Neoplasms/drug therapy , Methotrexate/pharmacology , Nanoparticles/chemistry , beta Carotene/pharmacology , Animals , Antineoplastic Agents/pharmacology , Antineoplastic Agents/toxicity , Apoptosis/drug effects , Biological Availability , Cell Survival/drug effects , Drug Carriers , Drug Combinations , Drug Liberation , Drug Stability , Female , Humans , Lipids/chemistry , MCF-7 Cells , Methotrexate/chemistry , Particle Size , Polymers/chemistry , Rats, Wistar , Surface Properties , beta Carotene/chemistry
10.
AAPS PharmSciTech ; 18(5): 1447-1459, 2017 Jul.
Article in English | MEDLINE | ID: mdl-28550604

ABSTRACT

ß-Carotene, abundant majorly in carrot, pink guava yams, spinach, kale, sweet potato, and palm oil, is an important nutrient for human health due to its scavenging action upon reactive free radicals wherever produced in the body. Inclusion of liposoluble ß-carotene in foods and food ingredients is a challenging aspect due to its labile nature and low absorption from natural sources. This fact has led to the application of encapsulation of ß-carotene to improve stability and bioavailability. The present work was aimed to fabricate microcapsules (MCs) of ß-carotene oily dispersion using the complex coacervation technique with casein (CA) and guar gum (GG) blend. The ratio of CA:GG was found to be 1:0.5 (w/v) when optimized on the basis of zeta potential-yield stress phenomenon. These possessed a higher percentage yield (71.34 ± 0.55%), lower particle size (176.47 ± 4.65 µm), higher encapsulation efficiency (65.95 ± 5.33%), and in general, a uniform surface morphology was observed with particles showing optimized release behavior. Prepared MCs manifested effective and controlled release (up to 98%) following zero-order kinetics which was adequately explained by the Korseymer-Peppas model. The stability of the freeze-dried MCs was established in simulated gastrointestinal fluids (SGF, SIF) for 8 h. Antioxidant activity of the MCs was studied and revealed the retention of the functional architecture of ß-carotene in freeze-dried MCs. Minimal photolytic degradation upon encapsulation of ß-carotene addressed the challenge regarding photo-stability of ß-carotene as confirmed via mass spectroscopy.


Subject(s)
Caseins , Drug Compounding/methods , Galactans , Mannans , Plant Gums , beta Carotene , Capsules/chemistry , Capsules/pharmacology , Caseins/chemistry , Caseins/pharmacology , Dietary Fiber/pharmacology , Drug Liberation , Drug Stability , Freeze Drying/methods , Galactans/chemistry , Galactans/pharmacology , Humans , Mannans/chemistry , Mannans/pharmacology , Particle Size , Plant Gums/chemistry , Plant Gums/pharmacology , beta Carotene/chemistry , beta Carotene/pharmacology
11.
Mol Pharm ; 14(6): 1883-1897, 2017 06 05.
Article in English | MEDLINE | ID: mdl-28402673

ABSTRACT

The present study was aimed to coencapsulate methotrexate (MTX) and aceclofenac (ACL) in fucose anchored lipid-polymer hybrid nanoparticles (Fu-LPHNPs) to achieve target specific and controlled delivery for developing therapeutic interventions against breast cancer. The effective combination therapy requires coadministration of drugs to achieve synergistic effect on tumor with minimum adverse effects. Present study investigates the potential of codelivery of MTX and ACL through LPHNPs in MCF-7 and triple negative breast cancer cells (MDA-MB-231). We obtained LPHNPs in the nanosize range (<150 nm) with better particle size distribution (<0.3). The entrapment and loading efficiency of MTX and ACL was calculated as 85-90% and 10-12%, respectively. The coumarin-6 LPHNP formulations showed rapid internalization within 2 h incubation with MCF-7 and MDA-MB-231 cells. With 8-10 times, greater bioavailability of drug-loaded LPHNPs than free MTX and ACL was obtained. Also, antitumor efficacy of MTX- and ACL-loaded LPHNPs was determined on DMBA-induced experimental breast cancer mouse model. This model showed better control over tumor growth with MTX- and ACL-loaded LPHNPs than the combination of MTX and ACL or MTX alone. ACL-loaded LPHNPs showed prophylactic and anticancer activity in DMBA-induced mouse model at higher dose (10 mg/kg). ACL-LPHNPs confer synergistic anticancer effect when administered in combination with MTX. In conclusion, ACL enhances the therapeutic and anticancer efficacy of MTX, when coencapsulated into fucose-anchored LPHNPs, as confirmed by cell viability and serum angiogenesis (IL-6, TNF-α, IL-1ß, COX2, and MMP1) at both transcript and proteome level.


Subject(s)
Breast Neoplasms/drug therapy , Diclofenac/analogs & derivatives , Lipids/chemistry , Methotrexate/administration & dosage , Methotrexate/pharmacokinetics , Nanoparticles/chemistry , Polymers/chemistry , Animals , Cell Line, Tumor , Cell Survival/drug effects , Cyclooxygenase 2/metabolism , Diclofenac/administration & dosage , Diclofenac/chemistry , Diclofenac/pharmacokinetics , Diclofenac/pharmacology , Female , Humans , Interleukin-1beta/metabolism , Interleukin-6/metabolism , MCF-7 Cells , Matrix Metalloproteinase 1/metabolism , Methotrexate/chemistry , Methotrexate/pharmacology , Mice , Mice, Inbred BALB C , Tumor Necrosis Factor-alpha/metabolism
12.
Colloids Surf B Biointerfaces ; 152: 482-491, 2017 Apr 01.
Article in English | MEDLINE | ID: mdl-28196351

ABSTRACT

The present study investigates the anticancer efficacy of lycopene loaded lipidic nanostructured particles. With a homogenization-evaporation technique, lycopene loaded solid lipid nanoparticles (LYC-SLNs) were fabricated with different ratios of biocompatible viz. compritol ATO 888 and gelucire, and evaluated for their micromeretics properties, in vitro release, in vitro cytotoxicity, cellular uptake and apoptosis induced in MCF-7 cells. Effects of anticancer potential of LYC-SLNs on the efficacy of methotrexate (MTX), a well-established anticancer agent, was evaluated thereafter. Cell culture experiments revealed a considerably higher cellular uptake of LYC-SLNs in MCF-7 cells, as compared to the free LYC. The concentration and time dependent cell survival of MCF-7 cells was significantly reduced by LYC-SLNs, as compared to their free LYC counterparts. Additionally, the combined cytotoxicity of the LYC and its nanostructured formulation with MTX was evaluated. The results of cytotoxicity and apoptotic study revealed synergism at all-time points up to 48h. In a nutshell, the combination regimen could be promising approach to improve the therapeutic benefits of anticancer agents.


Subject(s)
Antineoplastic Agents/chemistry , Carotenoids/chemistry , Lipids/chemistry , Methotrexate/chemistry , Nanoparticles/chemistry , Antineoplastic Agents/pharmacology , Apoptosis/drug effects , Cell Survival/drug effects , Drug Carriers/chemistry , Female , Humans , Lycopene , MCF-7 Cells
13.
Int J Biol Macromol ; 93(Pt A): 746-756, 2016 Dec.
Article in English | MEDLINE | ID: mdl-27575434

ABSTRACT

The current work entails a novel strategy of formulating the microparticles of lycopene solely using rational blends of biopolymers without using equipment-intensive techniques. The study is intended to enhance oral bioavailability of lycopene by controlling its release from micro-formulation and facilitating its absorption though lymphatic pathways. Considering the minimum particle size, maximum entrapment efficiency and loading capacity, the amounts of casein (i.e., protein) and gum tragacanth (i.e., polysaccharide) were selected as the critical factors for formulation of microparticles. Complex formation and electrostatic interaction was confirmed by Fourier transform infra red (FTIR) spectra. Size and surface properties of microparticles were studied using scanning electron microscopy (SEM). The optimized formulation (mean particle size: ∼130µm; % entrapment efficiency: ∼67% and loading capacity: ∼71%) designated noticeable improvement in lycopene release profile (over 80% in 24h). Increment in the values of Cmax (2.22-fold) and AUC (1.97-fold) further indicated noteworthy augmentation in the rate and extent of bioavailability by the microparticles formulation compared to plain lycopene. The resulting formulation was found to be quite stable all through two months of study episode. The resultant microparticles formulation was evaluated for antioxidant activity and tested for their effectiveness in self life enhancement of vegetable oil by calculating peroxide value under temperature and storage condition. Encapsulation strongly increased the stability of micronutrients. The current investigations, therefore, report the successful development of biopolymeric microparticles with improved bioavailability potential of lycopene.


Subject(s)
Drug Carriers , Oral Mucosal Absorption , Polysaccharides , Animals , Carotenoids/chemistry , Carotenoids/pharmacokinetics , Carotenoids/pharmacology , Caseins/chemistry , Caseins/pharmacokinetics , Caseins/pharmacology , Drug Carriers/chemistry , Drug Carriers/pharmacokinetics , Drug Carriers/pharmacology , Lycopene , Male , Polysaccharides/chemistry , Polysaccharides/pharmacokinetics , Polysaccharides/pharmacology , Rats , Rats, Wistar , Static Electricity
14.
Colloids Surf B Biointerfaces ; 146: 114-26, 2016 Oct 01.
Article in English | MEDLINE | ID: mdl-27268228

ABSTRACT

The present study is designed to engineer fucose anchored methotrexate loaded solid lipid nanoparticles (SLNs) to target breast cancer. The developed nano-carriers were characterized with respect to particle size, PDI, zeta potential, drug loading and entrapment, in-vitro release etc. The characterized formulations were used to comparatively assess cellular uptake, cell-viability, apoptosis, lysosomal membrane permeability, bioavailability, biodistribution, changes in tumor volume and animal survival. The ex-vivo results showed greater cellular uptake and better cytotoxicity at lower IC50 of methotrexate in breast cancer cells. Further, we observed increased programmed cell death (apoptosis) with altered lysosomal membrane permeability and better rate of degradation of lysosomal membrane in-vitro. On the other hand, in-vivo evaluation showed maximum bioavailability and tumor targeting efficiency with minimum secondary drug distribution in various organs with formulated and anchored nano-carrier when compared with free drug. Moreover, sizeable reduction in tumor burden was estimated with fucose decorated SLNs as compared to that seen with free MTX and SLNs-MTX. Fucose decorated SLNs showed promising results to develop therapeutic interventions for breast cancer, and paved a way to explore this promising and novel nano-carrier which enables to address breast cancer.


Subject(s)
Breast Neoplasms/drug therapy , Drug Delivery Systems , Fucose/chemistry , Lipids/chemistry , Methotrexate/pharmacology , Nanoparticles/chemistry , Animals , Antimetabolites, Antineoplastic/chemistry , Antimetabolites, Antineoplastic/pharmacology , Apoptosis/drug effects , Breast Neoplasms/pathology , Cell Survival/drug effects , Drug Carriers/chemistry , Female , Humans , Methotrexate/chemistry , Rats , Rats, Wistar , Tumor Cells, Cultured
15.
Int J Biol Macromol ; 87: 101-13, 2016 Jun.
Article in English | MEDLINE | ID: mdl-26851204

ABSTRACT

Complex coacervation in casein/gum tragacanth (CAS/GT) mixtures was studied as a function of pH, initial protein to polysaccharide mixing ratio (Pr:Ps), total biopolymer concentration, core material load and ionic strength. This study is aimed at understanding how these parameters influence the coacervation kinetics, the coacervate yield, and entrapment efficiency. At a Pr:Ps=2:1, an optimum pH of complex coacervation was found 4.35, at which the intensity of electrostatic interaction was maximum. At these conditions, the phase separation occurred the fastest and the final coacervate yield and entrapment efficiency were the largest. Moreover, the developed ß-carotene loaded microcapsules formulation was found to have particle size 159.71±2.16µm, coacervates yield 82.51±0.412%, entrapment efficiency 79.36±0.541%. Varying the Pr:Ps shifted the value of optimum pH. Electrostatic interaction and formation of coacervates was confirmed by Fourier Transform Infra Red (FTIR) spectra. Size and surface properties of coacervates were studied using Scanning Electron Microscopy (SEM). Entrapment of core material within the coacervates was confirmed by Confocal Laser Scanning Microscope (CLSM). The resultant formulation was evaluated for release study and antioxidant activity. Stability of encapsulated ß-carotene was evaluated under three levels of temperature (5, 25 and 40°C) for 3 months. Encapsulation strongly increased the stability of micronutrients. Our results advocate potential of microcapsules as a novel carrier for the safeguard and sustained release of micronutrient.


Subject(s)
Caseins/chemistry , Free Radical Scavengers/chemistry , Tragacanth/chemistry , beta Carotene/chemistry , Biphenyl Compounds/chemistry , Capsules , Hydrogen-Ion Concentration , Picrates/chemistry , Static Electricity , Surface Properties
16.
Colloids Surf B Biointerfaces ; 141: 268-277, 2016 May 01.
Article in English | MEDLINE | ID: mdl-26859118

ABSTRACT

The study was intended to develop a new intra-gastric floating in situ microballoons system for controlled delivery of rabeprazole sodium and amoxicillin trihydrate for the treatment of peptic ulcer disease. Eudragit S-100 and hydroxypropyl methyl cellulose based low density microballoons systems were fabricated by employing varying concentrations of Eudragit S-100 and hydroxypropyl methyl cellulose, to which varying concentrations of drug was added, and formulated by stirring at various speed and time to optimize the process and formulation variable. The formulation variables like concentration and ratio of polymers significantly affected the in vitro drug release from the prepared floating device. The validation of the gastro-retentive potential of the prepared microballoons was carried out in rabbits by orally administration of microballoons formulation containing radio opaque material. The developed formulations showed improved buoyancy and lower ulcer index as compared to that seen with plain drugs. Ulcer protective efficacies were confirmed in ulcer-bearing mouse model. In conclusion, greater compatibility, higher gastro-retention and higher anti-ulcer activity of the presently fabricated formulations to improve potential of formulation for redefining ulcer treatment are presented here. These learning exposed a targeted and sustained drug delivery potential of prepared microballoons in gastric region for ulcer therapeutic intervention as corroborated by in vitro and in vivo findings and, thus, deserves further attention for improved ulcer treatment.


Subject(s)
Amoxicillin/pharmacokinetics , Gastric Mucosa/metabolism , Microspheres , Peptic Ulcer/metabolism , Polymethacrylic Acids/chemistry , Rabeprazole/pharmacokinetics , Amoxicillin/administration & dosage , Amoxicillin/chemistry , Animals , Anti-Bacterial Agents/administration & dosage , Anti-Bacterial Agents/chemistry , Anti-Bacterial Agents/pharmacokinetics , Anti-Ulcer Agents/administration & dosage , Anti-Ulcer Agents/chemistry , Anti-Ulcer Agents/pharmacokinetics , Drug Delivery Systems , Drug Liberation , Male , Microscopy, Electron, Scanning , Particle Size , Peptic Ulcer/drug therapy , Rabbits , Rabeprazole/administration & dosage , Rabeprazole/chemistry , Rats , Spectrophotometry , Stomach/drug effects , Stomach/pathology , Time Factors , Treatment Outcome
17.
Drug Dev Ind Pharm ; 42(6): 897-905, 2016.
Article in English | MEDLINE | ID: mdl-26577703

ABSTRACT

The present study documents the fabrication and characterization of a topically applicable gel loaded with nanostructured lipid carriers (NLCs) of adapalene (ADA) and vitamin C (ascorbyl-6-palmitate [AP]). The NLCs were prepared by high pressure homogenization (HPH) method followed by incorporation into AP loaded gel. The fabricated system was characterized for size, poly dispersity index, entrapment efficiency (EE) and in vitro drug release properties, and was further investigated for skin compliance, skin transport characteristics (skin permeation and bio-distribution), rheological behavior, texture profile analysis and anti-acne therapeutic potential against testosterone-induced acne in male Wistar rats. The NLC-based formulation improved targeting of the skin epidermal layer and reducing systemic penetration. The co-administration of vitamin C led to an adjunct effect in acne therapy in physiological conditions. In brief, the present results suggest the potential of NLCs as a novel carrier for the dermal delivery of ADA and also the synergistic effect of vitamin C in topical therapeutics.


Subject(s)
Acne Vulgaris/drug therapy , Adapalene/administration & dosage , Ascorbic Acid/administration & dosage , Drug Carriers/chemistry , Lipids/chemistry , Nanostructures/administration & dosage , Adapalene/chemistry , Administration, Cutaneous , Animals , Ascorbic Acid/chemistry , Chemistry, Pharmaceutical/methods , Drug Liberation , Drug Synergism , Gels/administration & dosage , Gels/chemistry , Male , Nanoparticles/administration & dosage , Nanoparticles/chemistry , Nanostructures/chemistry , Particle Size , Rats , Rats, Wistar , Skin/drug effects , Skin Absorption
18.
Curr Pharm Des ; 21(30): 4456-64, 2015.
Article in English | MEDLINE | ID: mdl-26234791

ABSTRACT

In the last couple of decades antioxidant agents have entered the health market as an easy and attractive means of managing diseases. These agents are of enormous interest for an increasingly health-concerned society, and may be particularly relevant for prophylaxis of a number of diseases i.e. arthritis, cancer, metabolic and cardiovascular diseases, osteoporosis, cataracts, brain disorders, etc. Antioxidants are also favorable to vascular healthiness and symbolize useful compounds because they are able to diminish overall cardiovascular risk by acting analogous to first line therapy or as adjuvants in case of failure or in situations where first line therapy cannot be used. Furthermore, well-designed trials are indeed needed to improve the therapeutic efficacy and health benefits of antioxidants. Numerous in vivo proof-of-concepts studies are offered to underline the feasibility of nanostructure system in order to optimizing the delivery of cardiovascular drugs. The present review highlights the recent approaches for management of cardiovascular disease using different vesicular and particulate carriers, including liposomes, nanoparticles, and nanoemulsions, with a primary emphasis on those which are expected to enhance the antioxidants level.


Subject(s)
Antioxidants/administration & dosage , Antioxidants/therapeutic use , Cardiovascular Diseases/drug therapy , Drug Carriers/chemistry , Nanomedicine , Nanoparticles/chemistry , Antioxidants/chemistry , Humans
19.
Colloids Surf B Biointerfaces ; 134: 47-58, 2015 Oct 01.
Article in English | MEDLINE | ID: mdl-26142628

ABSTRACT

The present investigation reports the preparation, optimization, and characterization of surface engineered solid lipid nanoparticles (SLNs) encapsulated with doxorubicin (DOX). Salient features such as biocompatibility, controlled release, target competency, potential of penetration, improved physical stability, low cost and ease of scaling-up make SLNs viable alternative to liposomes for effective drug delivery. Galactosylation of SLNs instructs some gratifying characteristic, which leads to the evolution of promising delivery vehicles. The impendence of lectin receptors on different cell surfaces makes the galactosylated carriers admirable for targeted delivery of drugs to ameliorate their therapeutic index. Active participation of some lectin receptors in immune responses to antigen overlaid the application of galactosylated carriers in delivery of antigen and immunotherapy for treatment of maladies like cancer. These advantages revealed the promising potential of galactosylated carriers in each perspective of drug delivery. The developed DOX loaded galactosylated SLNs formulation was found to have particle size 239 ± 2.40 nm, PDI 0.307 ± 0.004, entrapment efficiency 72.3 ± 0.9%. Higher cellular uptake, cytotoxicity, and nuclear localization of galactosylated SLNs against A549 cells revealed higher efficiency of the formulation. In a nutshell, the galactosylation strategy with SLNs could be a promising approach in improving the delivery of DOX for cancer therapy.


Subject(s)
Antibiotics, Antineoplastic/administration & dosage , Doxorubicin/administration & dosage , Galactose/chemistry , Lipids/chemistry , Nanoparticles , Animals , Antibiotics, Antineoplastic/pharmacokinetics , Doxorubicin/pharmacokinetics , Female , Male , Rats , Rats, Sprague-Dawley , Tissue Distribution
20.
Acta Biomater ; 24: 140-51, 2015 Sep.
Article in English | MEDLINE | ID: mdl-26116986

ABSTRACT

The objective of present study was to enhance permeation of bioactive molecules across blood brain barrier (BBB) through polysorbate 80 coated poly-lactic-co-glycolic acid (PLGA) nanoparticles (NPs) loaded with methotrexate-transferrin (Tw-Mtx-Tf-NP) conjugates (Mtx-Tf). The easy trans-BBB migration of developed formulations through endocytosis, and inhibition of P-gp efflux pump present in brain were established by Pluronic F-68 and/or polysorbate 80 (Tween 80/Tw). The over-expression of transferrin (Tf) receptors on cancer cell surface allowed targeted and sustained delivery of Mtx-Tf conjugated to brain cancer cells by receptor mediated endocytosis. The developed formulations showed improved penetration in comparison to non-targeting experimental NP controls. The transportation potential and bio-distribution studies of such nanosized polymeric carriers showing successful migration and trans-BBB passage was carried out by administering FITC labeled drug loaded NPs to albino rats through intravenous route. We have validated anti-tumor efficiency of newly formulated and drug loaded NPs compared to controls in experimentally induced tumor-harboring rat model. The present study suggests greater compatibility, less organ toxicity and higher anti-tumor activity of developed formulations due to their targeting and sustained delivery potential in cancer therapeutic interventions. In conclusion, our findings of targeted and sustained drug delivery potential of NPs for are corroborated with in vitro and in vivo evidence, and formulated novel delivery vehicle shows its value in developing new tools for treating brain cancer.


Subject(s)
Brain Neoplasms/drug therapy , Glioma/drug therapy , Methotrexate , Nanocapsules/chemistry , Transferrin , Animals , Brain Neoplasms/pathology , Cell Line, Tumor , Glioma/pathology , Methotrexate/chemistry , Methotrexate/pharmacology , Rats , Rats, Wistar , Surface Properties , Transferrin/chemistry , Transferrin/pharmacology
SELECTION OF CITATIONS
SEARCH DETAIL
...