Displaying publications 141 - 160 of 536 in total

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  1. Ruttala HB, Ramasamy T, Madeshwaran T, Hiep TT, Kandasamy U, Oh KT, et al.
    Arch Pharm Res, 2018 Feb;41(2):111-129.
    PMID: 29214601 DOI: 10.1007/s12272-017-0995-x
    The development of novel drug delivery systems based on well-defined polymer therapeutics has led to significant improvements in the treatment of multiple disorders. Advances in material chemistry, nanotechnology, and nanomedicine have revolutionized the practices of drug delivery. Stimulus-responsive material-based nanosized drug delivery systems have remarkable properties that allow them to circumvent biological barriers and achieve targeted intracellular drug delivery. Specifically, the development of novel nanocarrier-based therapeutics is the need of the hour in managing complex diseases. In this review, we have briefly described the fundamentals of drug targeting to diseased tissues, physiological barriers in the human body, and the mechanisms/modes of drug-loaded carrier systems. To that end, this review serves as a comprehensive overview of the recent developments in stimulus-responsive drug delivery systems, with focus on their potential applications and impact on the future of drug delivery.
    Matched MeSH terms: Drug Delivery Systems/methods; Drug Delivery Systems/trends*
  2. Vyas T, Rapalli VK, Chellappan DK, Dua K, Dubey SK, Singhvi G
    Life Sci, 2021 Dec 15;287:120148.
    PMID: 34785190 DOI: 10.1016/j.lfs.2021.120148
    BACKGROUND: Biofilms are microcolonies of microbes that form communities with a variety of microbes, exhibit the same gene composition but differ in gene expression. Biofilm-associated infections have been in existence for a long, however, biofilm-associated skin disorders have not been investigated much.

    OBJECTIVES: Biofilms, which are made mostly of the matrix can be thought of as communities of microbes that are more virulent and more difficult to eradicate as compared to their planktonic counterparts. Currently, several formulations are available in the market which have the potential to treat biofilm-assisted skin disorders. However, the existing pharmacotherapies are not competent enough to cure them effectively and entirely, in several cases.

    KEY FINDINGS: Especially with the rising resistance towards antibiotics, it has become particularly challenging to ameliorate these disorders completely. The new approaches are being used to combat biofilm-associated skin disorders, some of them being photodynamic therapy, nanotherapies, and the use of novel drug delivery systems. The focus of attention, however, is nanotherapy. Micelles, solid lipid nanoparticles, quatsomes, and many others are being considered to find a better solution for the biofilm-associated skin disorders.

    SIGNIFICANCE: This review is an attempt to give a perspective on these new approaches for treating bacterial biofilms associated with skin disorders.

    Matched MeSH terms: Drug Delivery Systems/methods*; Drug Delivery Systems/trends
  3. Shao M, Hussain Z, Thu HE, Khan S, de Matas M, Silkstone V, et al.
    Crit Rev Ther Drug Carrier Syst, 2017;34(5):387-452.
    PMID: 29256838 DOI: 10.1615/CritRevTherDrugCarrierSyst.2017016957
    Chronic wounds which include diabetic foot ulcer (DFU), pressure ulcer, and arterial or venous ulcers compel a significant burden to the patients, healthcare providers, and the healthcare system. Chronic wounds are characterized by an excessive persistent inflammatory phase, prolonged infection, and the failure of defense cells to respond to environmental stimuli. Unlike acute wounds, chronic nonhealing wounds pose a substantial challenge to conventional wound dressings, and the development of novel and advanced wound healing modalities is needed. Toward this end, numerous conventional wound-healing modalities have been evaluated in the management of nonhealing wounds, but a multifaceted approach is lacking. Therefore, this review aims to compile and explore the wide therapeutic algorithm of current and advanced wound healing approaches to the treatment of chronic wounds. The algorithm of chronic wound healing techniques includes conventional wound dressings; approaches based on autografts, allografts, and cultured epithelial autografts; and recent modalities based on natural, modified or synthetic polymers and biomaterials, processed mutually in the form of hydrogels, films, hydrocolloids, and foams. Moreover, this review also explores the promising potential of advanced drug delivery systems for the sustained delivery of growth factors, curcumin, aloe vera, hyaluronic acid, and other bioactive substances as well as stem cell therapy. The current review summarizes the convincing evidence for the clinical dominance of polymer-based chronic wound healing modalities as well as the latest and innovative therapeutic strategies for the treatment of chronic wounds.
    Matched MeSH terms: Drug Delivery Systems/methods*; Drug Delivery Systems/trends
  4. Meka VS, Songa AS, Nali SR, Battu JR, Kukati L, Kolapalli VR
    Invest Clin, 2012 Sep;53(3):223-36.
    PMID: 23248967
    The aim of the present investigation was to formulate thermally sintered floating tablets of propranolol HCl, and to study the effect of sintering conditions on drug release, as well as their in vitro buoyancy properties. A hydrophilic polymer, polyethylene oxide, was selected as a sintered polymer to retard the drug release. The formulations were prepared by a direct compression method and were evaluated by in vitro dissolution studies. The results showed that sintering temperature and time of exposure greatly influenced the buoyancy, as well as the dissolution properties. As the sintering temperature and time of exposure increased, floating lag time was found to be decreased, total floating time was increased and drug release was retarded. An optimized sintered formulation (sintering temperature 50 degrees C and time of exposure 4 h) was selected, based on their drug retarding properties. The optimized formulation was characterized with FTIR and DSC studies and no interaction was found between the drug and the polymer used.
    Matched MeSH terms: Drug Delivery Systems
  5. Che Rose L, Bear JC, McNaughter PD, Southern P, Piggott RB, Parkin IP, et al.
    Sci Rep, 2016;6:20271.
    PMID: 26842884 DOI: 10.1038/srep20271
    An orally-administered system for targeted, on-demand drug delivery to the gastrointestinal (GI) tract is highly desirable due to the high instances of diseases of that organ system and harsh mechanical and physical conditions any such system has to endure. To that end, we present an iron oxide nanoparticle/wax composite capsule coating using magnetic hyperthermia as a release trigger. The coating is synthesised using a simple dip-coating process from pharmaceutically approved materials using a gelatin drug capsule as a template. We show that the coating is impervious to chemical conditions within the GI tract and is completely melted within two minutes when exposed to an RF magnetic field under biologically-relevant conditions. The overall simplicity of action, durability and non-toxic and inexpensive nature of our system demonstrated herein are key for successful drug delivery systems.
    Matched MeSH terms: Drug Delivery Systems
  6. Bhaskaran M, Devegowda VG, Gupta VK, Shivachar A, Bhosale RR, Arunachalam M, et al.
    ACS Chem Neurosci, 2020 10 07;11(19):2962-2977.
    PMID: 32945654 DOI: 10.1021/acschemneuro.0c00555
    Glioblastoma multiforme (GBM), a standout among the most dangerous class of central nervous system (CNS) cancer, is most common and is an aggressive malignant brain tumor in adults. In spite of developments in modality therapy, it remains mostly incurable. Consequently, the need for novel systems, strategies, or therapeutic approaches for enhancing the assortment of active agents meant for GBM becomes an important criterion. Currently, cancer research focuses mainly on improving the treatment of GBM via diverse novel drug delivery systems. The treatment options at diagnosis are multimodal and include radiation therapy. Moreover, significant advances in understanding the molecular pathology of GBM and associated cell signaling pathways have opened opportunities for new therapies. Innovative treatment such as immunotherapy also gives hope for enhanced survival. The objective of this work was to collect and report the recent research findings to manage GBM. The present review includes existing novel drug delivery systems and therapies intended for managing GBM. Reported novel drug delivery systems and diverse therapies seem to be precise, secure, and relatively effective, which could lead to a new track for the obliteration of GBM.
    Matched MeSH terms: Drug Delivery Systems
  7. Setapa A, Ahmad N, Mohd Mahali S, Mohd Amin MCI
    Polymers (Basel), 2020 Dec 05;12(12).
    PMID: 33291495 DOI: 10.3390/polym12122921
    Various swelling drug delivery devices are promising materials for control drug delivery because of their ability to swell and release entrapped therapeutics, in response to physiological stimuli. Previously, many mathematical models have been developed to predict the mechanism of drug release from a swelling device. However, some of these models do not consider the changes in diffusion behaviour as the device swells. Therefore, we used a two-phase approach to simplify the mathematical model considering the effect of swelling on the diffusion coefficient. We began by defining a moving boundary problem to consider the swelling process. Landau transformation was used for mitigating the moving boundary problem. The transformed problem was analytically solved using the separation of variables method. Further, the analytical solution was extended to include the drug release in two phases where each phase has distinct diffusion coefficient and continuity condition was applied. The newly developed model was validated by the experimental data of bacterial cellulose hydrogels using the LSQCURVEFIT function in MATLAB. The numerical test showed that the new model exhibited notable improvement in curve fitting, and it was observed that the initial effective diffusion coefficient of the swelling device was lower than the later effective diffusion coefficient.
    Matched MeSH terms: Drug Delivery Systems
  8. Ansari MT, Ramlan TA, Jamaluddin NN, Zamri N, Salfi R, Khan A, et al.
    Curr Pharm Des, 2020;26(34):4272-4276.
    PMID: 32693760 DOI: 10.2174/1381612826666200720235752
    Cancer and tumor have been major reasons for numerous deaths in this century across the world. Many strategies have been designed to treat, diagnose, or prevent cancer. The success of chemotherapy largely depends on drug targeting. The advent of nanotechnology has vastly improved drug delivery for targeting and diagnosis. Nevertheless, the accuracy of drug targeting with polymeric nanoparticles has always been questionable. The polymeric nanoparticles synthesized from varieties of lipid-based compounds or combined with vectors, such as liposomes, ethosomes, and transfersomes, may allow the drug to overcome the issue of resistance to drug absorption in biological membranes. The combined effects of lipid-based nanocarriers are known to improve the efficacy and accuracy of polymeric nanoparticles. The present review explores the application of lipid based nanocarriers in the treatment and diagnosis of cancer A special focus is given to the use of lipid-based nanocarriers in the treatment, diagnosis, and mitigation of cancer located in blood, brain, lung, and colon. The treatment of these cancers has always been questionable as the chances of relapse are very high. The review encompasses the use of lipid-based nanocarriers in targeting tissue-specific cancer cells.
    Matched MeSH terms: Drug Delivery Systems
  9. Ramanunny AK, Wadhwa S, Gulati M, Singh SK, Kapoor B, Dureja H, et al.
    Eur J Pharmacol, 2021 Jan 05;890:173691.
    PMID: 33129787 DOI: 10.1016/j.ejphar.2020.173691
    Skin diseases are the fourth leading non-fatal skin conditions that act as a burden and affect the world economy globally. This condition affects the quality of a patient's life and has a pronounced impact on both their physical and mental state. Treatment of these skin conditions with conventional approaches shows a lack of efficacy, long treatment duration, recurrence of conditions, systemic side effects, etc., due to improper drug delivery. However, these pitfalls can be overcome with the applications of nanomedicine-based approaches that provide efficient site-specific drug delivery at the target site. These nanomedicine-based strategies are evolved as potential treatment opportunities in the form of nanocarriers such as polymeric and lipidic nanocarriers, nanoemulsions along with emerging others viz. carbon nanotubes for dermatological treatment. The current review focuses on challenges faced by the existing conventional treatments along with the topical therapeutic perspective of nanocarriers in treating various skin diseases. A total of 213 articles have been reviewed and the application of different nanocarriers in treating various skin diseases has been explained in detail through case studies of previously published research works. The toxicity related aspects of nanocarriers are also discussed.
    Matched MeSH terms: Drug Delivery Systems
  10. Gokada MR, Pasupuleti VR, Bollikolla HB
    Mini Rev Med Chem, 2021;21(10):1173-1181.
    PMID: 33397236 DOI: 10.2174/1389557521666210104165733
    The novel Coronavirus disease (COVID-19) is an epidemic disease that appeared at the end of the year 2019 with a sudden increase in number and came to be considered as a pandemic disease caused by a viral infection which has threatened most countries for an emergency search for new anti-SARS-COV drugs /vaccines. At present, the number of clinical trials is ongoing worldwide on different drugs i.e. Hydroxychloroquine, Remedisvir, Favipiravir that utilize various mechanisms of action. A few countries are currently processing clinical trials, which may result in a positive outcome. Favipiravir (FPV) represents one of the feasible treatment options for COVID-19, if the result of the trials turns out positive. Favipiravir will be one of the developed possibly authoritative drugs to warrant benefits to mankind with large-scale production to meet the demands of the current pandemic Covid-19 outbreak and future epidemic outbreaks. In this review, the authors tried to explore key molecules, which will be supportive for devising COVID-19 research.
    Matched MeSH terms: Drug Delivery Systems
  11. Nadia Ahmad NF, Nik Ghazali NN, Wong YH
    Biosens Bioelectron, 2021 May 30;189:113384.
    PMID: 34090154 DOI: 10.1016/j.bios.2021.113384
    The advanced stimuli-responsive approaches for on-demand drug delivery systems have received tremendous attention as they have great potential to be integrated with sensing and multi-functional electronics on a flexible and stretchable single platform (all-in-one concept) in order to develop skin-integration with close-loop sensation for personalized diagnostic and therapeutic application. The wearable patch pumps have evolved from reservoir-based to matrix patch and drug-in-adhesive (single-layer or multi-layer) type. In this review, we presented the basic requirements of an artificial pancreas, surveyed the design and technologies used in commercial patch pumps available on the market and provided general information about the latest wearable patch pump. We summarized the various advanced delivery strategies with their mechanisms that have been developed to date and representative examples. Mechanical, electrical, light, thermal, acoustic and glucose-responsive approaches on patch form have been successfully utilized in the controllable transdermal drug delivery manner. We highlighted key challenges associated with wearable transdermal delivery systems, their research direction and future development trends.
    Matched MeSH terms: Drug Delivery Systems
  12. Khursheed R, Singh SK, Wadhwa S, Gulati M, Kapoor B, Awasthi A, et al.
    Expert Opin Drug Deliv, 2021 04;18(4):427-448.
    PMID: 33356647 DOI: 10.1080/17425247.2021.1846517
    Introduction: Diabetic neuropathy (DN) is one of the major complications arising from hyperglycaemia in diabetic patients. In recent years polyphenols present in plants have gained attention to treat DN. The main advantages associated with them are their action via different molecular pathways to manage DN and their safety. However, they failed to gain clinical attention due to challenges associated with their formulation development such as lipophilicity,poor bioavailability, rapid systemic elimination, and enzymatic degradation.Area covered: This article includes different polyphenols that have shown their potential against DN in preclinical studies and the research carried out towards development of their nanoformulations in order to overcome aforementioned issues.Expert opinion: In this review various polyphenol based nanoformulations such as nanospheres, self-nanoemulsifying drug delivery systems, niosomes, electrospun nanofibers, metallic nanoparticles explored exclusively to treat DN are discussed. However, the literature available related to polyphenol based nanoformulations to treat DN is limited. Moreover, these experiments are limited to preclinical studies. Hence, more focus is required towards  development of nanoformulations using simple and single step process as well as inexpensive and non-toxic excipients so that a stable, scalable, reproducible and non-toxic formulation could be achieved and clinical trials could be initiated.
    Matched MeSH terms: Drug Delivery Systems
  13. Thoniyot P, Tan MJ, Karim AA, Young DJ, Loh XJ
    Adv Sci (Weinh), 2015 02;2(1-2):1400010.
    PMID: 27980900
    New technologies rely on the development of new materials, and these may simply be the innovative combination of known components. The structural combination of a polymer hydrogel network with a nanoparticle (metals, non-metals, metal oxides, and polymeric moieties) holds the promise of providing superior functionality to the composite material with applications in diverse fields, including catalysis, electronics, bio-sensing, drug delivery, nano-medicine, and environmental remediation. This mixing may result in a synergistic property enhancement of each component: for example, the mechanical strength of the hydrogel and concomitantly decrease aggregation of the nanoparticles. These mutual benefits and the associated potential applications have seen a surge of interest in the past decade from multi-disciplinary research groups. Recent advances in nanoparticle-hydrogel composites are herein reviewed with a focus on their synthesis, design, potential applications, and the inherent challenges accompanying these exciting materials.
    Matched MeSH terms: Drug Delivery Systems
  14. Sharma A, Kumar D, Dahiya K, Hawthorne S, Jha SK, Jha NK, et al.
    Nanomedicine (Lond), 2021 09;16(21):1905-1923.
    PMID: 34348474 DOI: 10.2217/nnm-2021-0057
    The increasing burden of respiratory diseases caused by microbial infections poses an immense threat to global health. This review focuses on the various types of biofilms that affect the respiratory system and cause pulmonary infections, specifically bacterial biofilms. The article also sheds light on the current strategies employed for the treatment of such pulmonary infection-causing biofilms. The potential of nanocarriers as an effective treatment modality for pulmonary infections is discussed, along with the challenges faced during treatment and the measures that may be implemented to overcome these. Understanding the primary approaches of treatment against biofilm infection and applications of drug-delivery systems that employ nanoparticle-based approaches in the disruption of biofilms are of utmost interest which may guide scientists to explore the vistas of biofilm research while determining suitable treatment modalities for pulmonary respiratory infections.
    Matched MeSH terms: Drug Delivery Systems
  15. Ang KM, Yeo LY, Hung YM, Tan MK
    Lab Chip, 2016 09 21;16(18):3503-14.
    PMID: 27502324 DOI: 10.1039/c6lc00780e
    The deposition of a thin graphene film atop a chip scale piezoelectric substrate on which surface acoustic waves are excited is observed to enhance its performance for fluid transport and manipulation considerably, which can be exploited to achieve further efficiency gains in these devices. Such gains can then enable complete integration and miniaturization for true portability for a variety of microfluidic applications across drug delivery, biosensing and point-of-care diagnostics, among others, where field-use, point-of-collection or point-of-care functionality is desired. In addition to a first demonstration of vibration-induced molecular transport in graphene films, we show that the coupling of the surface acoustic wave gives rise to antisymmetric Lamb waves in the film which enhance molecular diffusion and hence the flow through the interstitial layers that make up the film. Above a critical input power, the strong substrate vibration displacement can also force the molecules out of the graphene film to form a thin fluid layer, which subsequently destabilizes and breaks up to form a mist of micron dimension aerosol droplets. We provide physical insight into this coupling through a simple numerical model, verified through experiments, and show several-fold improvement in the rate of fluid transport through the film, and up to 55% enhancement in the rate of fluid atomization from the film using this simple method.
    Matched MeSH terms: Drug Delivery Systems
  16. Tan CS, Billa N, Roberts CJ, Scurr DJ
    Nanomaterials (Basel), 2014 Dec 19;4(4):905-916.
    PMID: 28344257 DOI: 10.3390/nano4040905
    An amphotericin B-containing (AmB) solid lipid nanoparticulate drug delivery system intended for oral administration, comprised of bee's wax and theobroma oil as lipid components was formulated with the aim to ascertain the location of AmB within the lipid matrix: (a) a homogenous matrix; (b) a drug-enriched shell; or (c) a drug enriched core. Both the drug-loaded and drug-free nanoparticles were spherical with AmB contributing to an increase in both the z-average diameter (169 ± 1 to 222 ± 2 nm) and zeta potential (40.8 ± 0.9 to 50.3 ± 1.0 mV) of the nanoparticles. A maximum encapsulation efficiency of 21.4% ± 3.0%, corresponding to 10.7 ± 0.4 mg encapsulated AmB within the lipid matrix was observed. Surface analysis and electron microscopic imaging indicated that AmB was dispersed uniformly within the lipid matrix (option (a) above) and, therefore, this is the most suitable of the three models with regard to modeling the propensity for uptake by epithelia and release of AmB in lymph.
    Matched MeSH terms: Drug Delivery Systems
  17. Jamaluddin N, Ariff AB, Wong FWF
    Biotechnol Prog, 2019 01;35(1):e2719.
    PMID: 30299004 DOI: 10.1002/btpr.2719
    Aqueous micellar two-phase system (AMTPS) is an extractive technique of biomolecule, where it is based on the differential partitioning behavior of biomolecule between a micelle-rich and a micelle-poor phase. In this study, an AMTPS composed of a nonionic surfactant, Triton X-100 (TX-100) was used for purifying a bacteriocin-like inhibitory substance (BLIS) derived from Pediococcus acidilactici Kp10. The influences of the surfactant concentration and the effect of additives on the partitioning behavior and activity yield of the BLIS were investigated. The obtained coexistence curves showed that the mixtures of solutions composed of different surfactant concentrations (5-30% w/w) and 50% w/w crude load were able to separate into two phases at temperatures of above 60 °C. The optimum conditions for BLIS partitioning using the TX-100-based AMTPS were: TX-100 concentration of 22.5% w/w, CFCS load of 50% w/w, incubation time of 30 min at 75 °C, and back-extraction using acetone precipitation. This optimal partitioning resulted in an activity yield of 64.3% and a purification factor of 5.8. Moreover, the addition of several additives, such as sorbitol, KCl, dioctyl sulfosuccinate sodium salt, and Coomassie® Brilliant Blue, demonstrated no improvement in the BLIS separation, except for Amberlite® resin XAD-4, where the activity yield was improved to 70.3% but the purification factor was reduced to 2.3. Results from this study have demonstrated the potential and applicability of TX-100-based AMTPS as a primary recovery method for the BLIS from a complex fermentation broth of P. acidilactici Kp10. © 2018 American Institute of Chemical Engineers Biotechnol. Prog., 35: e2719, 2019.
    Matched MeSH terms: Drug Delivery Systems
  18. Goh EW, Heidelberg T, Duali Hussen RS, Salman AA
    ACS Omega, 2019 Oct 15;4(16):17039-17047.
    PMID: 31646251 DOI: 10.1021/acsomega.9b02809
    Aiming for glycolipid-based vesicles for targeted drug delivery, cationic Guerbet glycosides with spacered click functionality were designed and synthesized. The cationic charge promoted the distribution of the glycolipids during the formulation, thereby leading to homogeneously small vesicles. The positive surface charge of the vesicles stabilizes them against unwanted fusion and promotes interactions of the drug carriers with typical negative charge-dominated target cells. High bioconjugation potential of the functionalized glycolipids based on the copper-catalyzed azide alkyne cycloaddition makes them highly valuable components for targeted drug delivery systems.
    Matched MeSH terms: Drug Delivery Systems
  19. Uyen NTT, Hamid ZAA, Tram NXT, Ahmad N
    Int J Biol Macromol, 2020 Jun 15;153:1035-1046.
    PMID: 31794824 DOI: 10.1016/j.ijbiomac.2019.10.233
    Alginate microspheres (AMs) have received much attention as a novel drug delivery system owing to various advantages of alginate such as inexpensiveness, nontoxicity, biocompatibility and biodegradability. The well-designed fabrication method is essential to achieve desired AMs suitable for specific drug delivery system. Reports on AMs preparation techniques have increased rapidly in the last decade. A number of synthesis parameters have been investigated for the improvement of physical, chemical and biological properties of AMs. Hence, this review summarizes the work to date on the fabrication techniques of AMs for drug delivery system, including spray-drying, extrusion and emulsification/gelation technique. Besides, the influence of various factors such as alginate concentration, oil phase, surfactant, cross-linker concentrations, cross-linking time, stirring speed, model drug and drug content on the morphologies, properties and encapsulation efficiency (EE) of AMs via extrusion and emulsification/gelation technique are summarized. Before embarking on the development of any drug delivery system, a thorough understanding of drug release mechanism and factors that impact the drug release profile are essential, which are also covered in this review.
    Matched MeSH terms: Drug Delivery Systems
  20. Gorain B, Rajeswary DC, Pandey M, Kesharwani P, Kumbhar SA, Choudhury H
    Curr Pharm Des, 2020;26(19):2233-2246.
    PMID: 32167424 DOI: 10.2174/1381612826666200313125613
    Increasing incidence of demented patients around the globe with limited FDA approved conventional therapies requires pronounced research attention for the management of the demented conditions in the growing elderly population in the developing world. Dementia of Alzheimer's type is a neurodegenerative disorder, where conventional therapies are available for symptomatic treatment of the disease but possess several peripheral toxicities due to lack of brain targeting. Nanotechnology based formulations via intranasal (IN) routes of administration have shown to improve therapeutic efficacy of several therapeutics via circumventing blood-brain barrier and limited peripheral exposure. Instead of numerous research on polymeric and lipid-based nanocarriers in the improvement of therapeutic chemicals and peptides in preclinical research, a step towards clinical studies still requires wide-ranging data on safety and efficacy. This review has focused on current approaches of nanocarrierbased therapies on Alzheimer's disease (AD) via the IN route for polymeric and lipid-based nanocarriers for the improvement of therapeutic efficacy and safety. Moreover, the clinical application of IN nanocarrier-based delivery of therapeutics to the brain needs a long run; however, proper attention towards AD therapy via this platform could bring a new era for the AD patients.
    Matched MeSH terms: Drug Delivery Systems
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