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Advanced Drug Delivery Reviews

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https://www.readbyqxmd.com/read/28811184/experimental-cocrystal-screening-and-solution-based-scale-up-cocrystallization-methods
#1
REVIEW
Maria Malamatari, Steven A Ross, Dennis Douroumis, Sitaram P Velaga
Cocrystals are crystalline single phase materials composed of two or more different molecular and/or ionic compounds generally in a stoichiometric ratio which are neither solvates nor simple salts. If one of the components is an active pharmaceutical ingredient (API), the term pharmaceutical cocrystal is often used. There is a growing interest among drug development scientists in exploring cocrystals, as means to address physicochemical, biopharmaceutical and mechanical properties and expand solid form diversity of the API...
August 12, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28802567/nano-sized-and-other-improved-reporters-for-magnetic-resonance-imaging-of-angiogenesis
#2
Simonetta Geninatti Crich, Enzo Terreno, Silvio Aime
Magnetic Resonance Imaging (MRI) enables to provide anatomical, functional and molecular information of pathological angiogenesis when used with properly tailored imaging probes. Functional studies have been the domain of Dynamic Contrast Enhancement (DCE) -MRI protocols from which it is possible to extract quantitative estimations on key parameters such as the volumes of vascular and extracellular compartments and the rates of the bidirectional exchange of the imaging reporters across the endothelial barrier...
August 9, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28801093/current-developments-and-applications-of-microfluidic-technology-toward-clinical-translation-of-nanomedicines
#3
Dongfei Liu, Hongbo Zhang, Flavia Fontana, Jouni T Hirvonen, Hélder A Santos
Nanoparticulate drug delivery systems hold great potential for the therapy of many diseases, especially cancer. However, the translation of nanoparticulate drug delivery systems from academic research to the industrial and clinical practice has been slow. This slow translation can be ascribed to the high batch-to-batch variations and insufficient production rate of the conventional methods, and the lack of technologies for rapid screening of nanoparticulate drug delivery systems with high correlation to the in vivo tests...
August 8, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28782570/nanomedicine-and-advanced-technologies-for-burns-preventing-infection-and-facilitating-wound-healing
#4
Mirza Ali Mofazzal Jahromi, Parham Sahandi Zangabad, Seyed Masoud Moosavi Basri, Keyvan Sahandi Zangabad, Ameneh Ghamarypour, Amir R Aref, Mahdi Karimi, Michael R Hamblin
According to the latest report from the World Health Organization, an estimated 265,000 deaths still occur every year as a direct result of burn injuries. A widespread range of these deaths induced by burn wound happens in low- and middle-income countries, where survivors face a lifetime of morbidity. Most of the deaths occur due to infections when a high percentage of the external regions of the body area is affected. Microbial nutrient availability, skin barrier disruption, and vascular supply destruction in burn injuries as well as systemic immunosuppression are important parameters that cause burns to be susceptible to infections...
August 3, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28778715/nonviral-cancer-gene-therapy-delivery-cascade-and-vector-nanoproperty-integration
#5
Zhuxian Zhou, Xiangrui Liu, Dingcheng Zhu, Yue Wang, Zhen Zhang, Xuefei Zhou, Nasha Qiu, Xuesi Chen, Youqing Shen
Gene therapy represents a promising cancer treatment featuring high efficacy and limited side effects, but it is stymied by a lack of safe and efficient gene-delivery vectors. Cationic polymers and lipid-based nonviral gene vectors have many advantages and have been extensively explored for cancer gene delivery, but their low gene-expression efficiencies relative to viral vectors limit their clinical translations. Great efforts have thus been devoted to developing new carrier materials and fabricating functional vectors aimed at improving gene expression, but the overall efficiencies are still more or less at the same level...
August 1, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28778714/understanding-the-neurovascular-unit-at-multiple-scales-advantages-and-limitations-of-multi-photon-and-functional-ultrasound-imaging
#6
Alan Urban, Lior Golgher, Clément Brunner, Amos Gdalyahu, Hagai Har-Gil, David Kain, Gabriel Montaldo, Laura Sironi, Pablo Blinder
Developing efficient brain imaging technologies by combining a high spatiotemporal resolution and a large penetration depth is a key step for better understanding the neurovascular interface that emerges as a main pathway to neurodegeneration in many pathologies such as dementia. This review focuses on the advances in two complementary techniques: multi-photon laser scanning microscopy (MPLSM) and functional ultrasound imaging (fUSi). MPLSM has become the gold standard for in vivo imaging of cellular dynamics and morphology, together with cerebral blood flow...
August 1, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28760687/evaluation-of-transporters-in-drug-development-current-status-and-contemporary-issues
#7
REVIEW
Sue-Chih Lee, Vikram Arya, Xinning Yang, Donna A Volpe, Lei Zhang
Transporters govern the access of molecules to cells or their exit from cells, thereby controlling the overall distribution of drugs to their intracellular site of action. Clinically relevant drug-drug interactions mediated by transporters are of increasing interest in drug development. Drug transporters, acting alone or in concert with drug metabolizing enzymes, can play an important role in modulating drug absorption, distribution, metabolism and excretion, thus affecting the pharmacokinetics and/or pharmacodynamics of a drug...
July 28, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28757325/scar-management-in-burn-injuries-using-drug-delivery-and-molecular-signaling-current-treatments-and-future-directions
#8
REVIEW
Saeid Amini-Nik, Yusef Yousuf, Marc G Jeschke
In recent decades, there have been tremendous improvements in burn care that have allowed patients to survive severe burn injuries that were once fatal. However, a major limitation of burn care currently is the development of hypertrophic scars in approximately 70% of patients. This significantly decreases the quality of life for patients due to the physical and psychosocial symptoms associated with scarring. Current approaches to manage scarring include surgical techniques and non-surgical methods such as laser therapy, steroid injections, and compression therapy...
July 27, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28751200/gene-regulation-in-adult-neural-stem-cells-current-challenges-and-possible-applications
#9
Juan Manuel Encinas, Carlos P Fitzsimons
Adult neural stem and progenitor cells (NSPCs) offer a unique opportunity for neural regeneration and niche modification in physiopathological conditions, harnessing the capability to modify from neuronal circuits to glial scar. Findings exposing the vast plasticity and potential of NSPCs have accumulated over the past years and we currently know that adult NSPCs can naturally give rise not only to neurons but also to astrocytes and reactive astrocytes, and eventually to oligodendrocytes through genetic manipulation...
July 25, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28751201/the-role-of-mucus-in-cell-based-models-used-to-screen-mucosal-drug-delivery
#10
REVIEW
Anna Lechanteur, José das Neves, Bruno Sarmento
The increasing interest in developing tools to predict drug absorption through mucosal surfaces is fostering the establishment of epithelial cell-based models. Cell-based in vitro techniques for drug permeability assessment are less laborious, cheaper and address the concerns of using laboratory animals. Simultaneously, in vitro barrier models that thoroughly simulate human epithelia or mucosae may provide useful data to speed up the entrance of new drugs and new drug products into the clinics. Nevertheless, standard cell-based in vitro models that intend to reproduce epithelial surfaces often discard the role of mucus in influencing drug permeation/absorption...
July 24, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28736304/advances-in-cancer-stem-cell-targeting-how-to-strike-the-evil-at-its-root
#11
Brigitte M Pützer, Manish Solanki, Ottmar Herchenröder
Cancer progression to metastatic stages is still unmanageable and the promise of effective anti-metastatic therapy remains largely unmet, emphasizing the need to develop novel therapeutics. The special focus here is on cancer stem cells (CSC) as the seed of tumor initiation, epithelial-mesenchymal transition, chemoresistance and, as a consequence, drivers of metastatic dissemination. We report on targeted therapies gearing towards the CSC's internal and membrane-anchored markers using agents such as antibody derivatives, nucleic therapeutics, small molecules and genetic payloads...
July 21, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28736303/the-good-and-the-bad-collagens-of-fibrosis-their-role-in-signaling-and-organ-function
#12
M A Karsdal, S H Nielsen, D J Leeming, L L Langholm, M J Nielsen, T Manon-Jensen, A Siebuhr, N S Gudmann, S Rønnow, J M Sand, S J Daniels, J H Mortensen, D Schuppan
Usually the dense extracellular structure in fibrotic tissues is described as extracellular matrix (ECM) or simply as collagen. However, fibrosis is not just fibrosis, which is already exemplified by the variant morphological characteristics of fibrosis due to viral versus cholestatic, autoimmune or toxic liver injury, with reticular, chicken wire and bridging fibrosis. Importantly, the overall composition of the ECM, especially the relative amounts of the many types of collagens, which represent the most abundant ECM molecules and which centrally modulate cellular functions and physiological processes, changes dramatically during fibrosis progression...
July 20, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28736302/beyond-pegylation-alternative-surface-modification-of-nanoparticles-with-mucus-inert-biomaterials
#13
Vitaliy V Khutoryanskiy
Mucus is a highly hydrated viscoelastic gel present on various moist surfaces in our body including the eyes, nasal cavity, mouth, gastrointestinal, respiratory and reproductive tracts. It serves as a very efficient barrier that prevents harmful particles, viruses and bacteria from entering the human body. However, the protective function of the mucus also hampers the diffusion of drugs and nanomedicines, which dramatically reduces their efficiency. Functionalisation of nanoparticles with low molecular weight poly(ethylene glycol) (PEGylation) is one of the strategies to enhance their penetration through mucus...
July 20, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28734900/molecular-imaging-in-stem-cell-based-therapies-of-cardiac-diseases
#14
REVIEW
Xiang Li, Marcus Hacker
In the past 15years, despite regenerative medicine has shown great potential for cardiovascular diseases, the outcome and safety of stem cell transplantation has shown controversial results in the published literature. Medical imaging might be useful for monitoring and quantification transplanted cells within the heart and to serially characterize the effects of stem cell therapy of the myocardium. From the multiple available noninvasive imaging techniques, magnetic resonance imaging and nuclear imaging by positron (PET) or single photon emission computer tomography (SPECT) are the most used clinical approaches to follow the fate of transplanted stem cells in vivo...
July 19, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28734899/strategies-to-develop-endogenous-stem-cell-recruiting-bioactive-materials-for-tissue-repair-and-regeneration
#15
Settimio Pacelli, Sayantani Basu, Jonathan Whitlow, Aparna R Chakravarti, Francisca Acosta, Arushi Varshney, Saman Modaresi, Cory Berkland, Arghya Paul
A leading strategy in tissue engineering is the design of biomimetic scaffolds that stimulate the body's repair mechanisms through the recruitment of endogenous stem cells to sites of injury. Approaches that employ the use of chemoattractant gradients to guide tissue regeneration without external cell sources are favored over traditional cell-based therapies that have limited potential for clinical translation. Following this concept, bioactive scaffolds can be engineered to provide a temporally and spatially controlled release of biological cues, with the possibility to mimic the complex signaling patterns of endogenous tissue regeneration...
July 19, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28720422/drug-targeting-to-myofibroblasts-implications-for-fibrosis-and-cancer
#16
REVIEW
Saleh Yazdani, Ruchi Bansal, Jai Prakash
Myofibroblasts are the key players in extracellular matrix remodeling, a core phenomenon in numerous devastating fibrotic diseases. Not only in organ fibrosis, but also the pivotal role of myofibroblasts in tumor progression, invasion and metastasis has recently been highlighted. Myofibroblast targeting has gained tremendous attention in order to inhibit the progression of incurable fibrotic diseases, or to limit the myofibroblast-induced tumor progression and metastasis. In this review, we outline the origin of myofibroblasts, their general characteristics and functions during fibrosis progression in three major organs: liver, kidneys and lungs as well as in cancer...
July 16, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28712924/advanced-methodologies-for-cocrystal-synthesis
#17
Dennis Douroumis, Steven A Ross, Ali Nokhodchi
Pharmaceutical cocrystals are multicomponent systems composed of two or more molecules and held together by H-bonding. Currently, cocrystals provide exciting opportunities in the pharmaceutical industry for the development and manufacturing of new medicines by improving poor physical properties of Active Pharmaceutical Ingredients (APIs) such as processability, solubility, stability and bioavailability. According to the recent reclassification, cocrystals are considered as drug polymorph rather a new API which has a significant impact on drug development, regulatory submissions and intellectual property protection...
July 14, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28712923/key-players-in-the-immune-response-to-biomaterial-scaffolds-for-regenerative-medicine
#18
Liam Chung, David R Maestas, Franck Housseau, Jennifer H Elisseeff
The compatibility of biomaterials is critical to their structural and biological function in medical applications. The immune system is the first responder to tissue trauma and to a biomaterial implant. The innate immune effector cells, most notably the macrophage, play a significant role in the defense against foreign bodies and formation of a fibrous capsule around synthetic implants. Alternatively, macrophages participate in the pro-regenerative capacity of tissue-derived biological scaffolds. Research is now elucidating the role of the adaptive immune system, and T cells in particular, in directing macrophage response to synthetic and biological materials...
July 13, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28709936/effects-of-klotho-on-fibrosis-and-cancer-a-renal-focus-on-mechanisms-and-therapeutic-strategies
#19
Rik Mencke, Hannes Olauson, Jan-Luuk Hillebrands
Klotho is a membrane-bound protein predominantly expressed in the kidney, where it acts as a permissive co-receptor for Fibroblast Growth Factor 23. In its shed form, Klotho exerts anti-fibrotic effects in several tissues. Klotho-deficient mice spontaneously develop fibrosis and Klotho deficiency exacerbates the disease progression in fibrotic animal models. Furthermore, Klotho overexpression or supplementation protects against fibrosis in various models of renal and cardiac fibrotic disease. These effects are mediated at least partially by the direct inhibitory effects of soluble Klotho on TGFβ1 signaling, Wnt signaling, and FGF2 signaling...
July 11, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28697953/3d-in-vitro-models-of-liver-fibrosis
#20
Leo A van Grunsven
Animal testing is still the most popular preclinical assessment model for liver fibrosis. To develop efficient anti-fibrotic therapies, robust and representative in vitro models are urgently needed. The most widely used in vitro fibrosis model is the culture-induced activation of primary rodent hepatic stellate cells. While these cultures have contributed greatly to the current understanding of hepatic stellate cell activation, they seem to be inadequate to cover the complexity of this regenerative response...
July 8, 2017: Advanced Drug Delivery Reviews
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