scholarly journals Engineered Extracellular Vesicles: Tailored-Made Nanomaterials for Medical Applications

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1838
Author(s):  
Kenny Man ◽  
Mathieu Y. Brunet ◽  
Marie-Christine Jones ◽  
Sophie C. Cox
Keyword(s):  
Extracellular Vesicles ◽  
Tissue Regeneration ◽  
State Of The Art ◽  
Medical Applications ◽  
Clinical Use ◽  
Current State ◽  
Pathological Conditions ◽  
Potential Efficacy ◽  
Biomimetic Nanoparticles ◽  
Natural Cell

Extracellular vesicles (EVs) are emerging as promising nanoscale therapeutics due to their intrinsic role as mediators of intercellular communication, regulating tissue development and homeostasis. The low immunogenicity and natural cell-targeting capabilities of EVs has led to extensive research investigating their potential as novel acellular tools for tissue regeneration or for the diagnosis of pathological conditions. However, the clinical use of EVs has been hindered by issues with yield and heterogeneity. From the modification of parental cells and naturally-derived vesicles to the development of artificial biomimetic nanoparticles or the functionalisation of biomaterials, a multitude of techniques have been employed to augment EVs therapeutic efficacy. This review will explore various engineering strategies that could promote EVs scalability and therapeutic effectiveness beyond their native utility. Herein, we highlight the current state-of-the-art EV-engineering techniques with discussion of opportunities and obstacles for each. This is synthesised into a guide for selecting a suitable strategy to maximise the potential efficacy of EVs as nanoscale therapeutics.

scholarly journals Carbapenems: Past, Present, and Future

2011 ◽  
Vol 55 (11) ◽  
pp. 4943-4960 ◽  
Author(s):  
Krisztina M. Papp-Wallace ◽  
Andrea Endimiani ◽  
Magdalena A. Taracila ◽  
Robert A. Bonomo
Keyword(s):  
Antimicrobial Activity ◽  
State Of The Art ◽  
Parent Compound ◽  
Antimicrobial Properties ◽  
Value Added ◽  
Clinical Use ◽  
Continue Development ◽  
Penicillin Binding Proteins ◽  
Current State ◽  
Initial Discovery

ABSTRACTIn this review, we summarize the current “state of the art” of carbapenem antibiotics and their role in our antimicrobial armamentarium. Among the β-lactams currently available, carbapenems are unique because they are relatively resistant to hydrolysis by most β-lactamases, in some cases act as “slow substrates” or inhibitors of β-lactamases, and still target penicillin binding proteins. This “value-added feature” of inhibiting β-lactamases serves as a major rationale for expansion of this class of β-lactams. We describe the initial discovery and development of the carbapenem family of β-lactams. Of the early carbapenems evaluated, thienamycin demonstrated the greatest antimicrobial activity and became the parent compound for all subsequent carbapenems. To date, more than 80 compounds with mostly improved antimicrobial properties, compared to those of thienamycin, are described in the literature. We also highlight important features of the carbapenems that are presently in clinical use: imipenem-cilastatin, meropenem, ertapenem, doripenem, panipenem-betamipron, and biapenem. In closing, we emphasize some major challenges and urge the medicinal chemist to continue development of these versatile and potent compounds, as they have served us well for more than 3 decades.

Clinical use of cardiac PET/MRI: current state-of-the-art and potential future applications

2018 ◽  
Vol 36 (5) ◽  
pp. 313-323 ◽  
Author(s):  
Patrick Krumm ◽  
Stefanie Mangold ◽  
Sergios Gatidis ◽  
Konstantin Nikolaou ◽  
Felix Nensa ◽  
...  
Keyword(s):  
State Of The Art ◽  
Clinical Use ◽  
Cardiac Pet ◽  
Current State

scholarly journals Advances in therapeutic applications of extracellular vesicles

2019 ◽  
Vol 11 (492) ◽  
pp. eaav8521 ◽  
Author(s):  
Oscar P. B. Wiklander ◽  
Meadhbh Á. Brennan ◽  
Jan Lötvall ◽  
Xandra O. Breakefield ◽  
Samir EL Andaloussi
Keyword(s):  
Stem Cell ◽  
Extracellular Vesicles ◽  
Tissue Regeneration ◽  
Immune Modulation ◽  
Lipid Membrane ◽  
Therapeutic Agents ◽  
Bioactive Components ◽  
Pathological Conditions ◽  
Delivery Vehicles ◽  
And Function

Extracellular vesicles (EVs) are nanometer-sized, lipid membrane–enclosed vesicles secreted by most, if not all, cells and contain lipids, proteins, and various nucleic acid species of the source cell. EVs act as important mediators of intercellular communication that influence both physiological and pathological conditions. Given their ability to transfer bioactive components and surmount biological barriers, EVs are increasingly being explored as potential therapeutic agents. EVs can potentiate tissue regeneration, participate in immune modulation, and function as potential alternatives to stem cell therapy, and bioengineered EVs can act as delivery vehicles for therapeutic agents. Here, we cover recent approaches and advances of EV-based therapies.

scholarly journals Membrane vesicles, current state-of-the-art: emerging role of extracellular vesicles

2011 ◽  
Vol 68 (16) ◽  
pp. 2667-2688 ◽  
Author(s):  
Bence György ◽  
Tamás G. Szabó ◽  
Mária Pásztói ◽  
Zsuzsanna Pál ◽  
Petra Misják ◽  
...  
Keyword(s):  
Extracellular Vesicles ◽  
State Of The Art ◽  
Membrane Vesicles ◽  
Current State

scholarly journals Methodologies to Isolate and Purify Clinical Grade Extracellular Vesicles for Medical Applications

Cells ◽  
2022 ◽  
Vol 11 (2) ◽  
pp. 186
Author(s):  
Asma Akbar ◽  
Farzaneh Malekian ◽  
Neda Baghban ◽  
Sai Priyanka Kodam ◽  
Mujib Ullah
Keyword(s):  
Drug Delivery ◽  
Extracellular Vesicles ◽  
Medical Applications ◽  
Clinical Use ◽  
Clinical Grade ◽  
Isolation And Purification ◽  
The Past ◽  
Therapeutic Benefits ◽  
Nano Drug Delivery ◽  
Purification Methods

The use of extracellular vesicles (EV) in nano drug delivery has been demonstrated in many previous studies. In this study, we discuss the sources of extracellular vesicles, including plant, salivary and urinary sources which are easily available but less sought after compared with blood and tissue. Extensive research in the past decade has established that the breadth of EV applications is wide. However, the efforts on standardizing the isolation and purification methods have not brought us to a point that can match the potential of extracellular vesicles for clinical use. The standardization can open doors for many researchers and clinicians alike to experiment with the proposed clinical uses with lesser concerns regarding untraceable side effects. It can make it easier to identify the mechanism of therapeutic benefits and to track the mechanism of any unforeseen effects observed.

scholarly journals Carbapenems: A Short Review about their Current Status

2021 ◽  
Vol 04 (01) ◽  
Author(s):  
Syeda Warda Zahra ◽  
Keyword(s):  
Cost Effectiveness ◽  
State Of The Art ◽  
Short Review ◽  
Current Status ◽  
Clinical Use ◽  
Beta Lactams ◽  
Beta Lactamases ◽  
Current State ◽  
The Cost

In this review, we summarize the current “state of the art” of carbapenem antibiotics and their role in our antimicrobial armamentarium. Among the beta-lactams currently available, carbapenems are unique because they are relatively resistant to hydrolysis by most beta-lactamases. Herein, we described the cost effectiveness, safety, and advantages of carbapenems as compared to other antibiotics. We also highlight important features of the carbapenems that are presently in clinical use: imipenem-cilastatin, meropenem, ertapenem, doripenem, panipenem-betamipron, and biapenem. In closing, we emphasize some major challenges related to oral formulatuion of carbapenems and different strategies to overcome these challenges.

Workshop report: clinical CASA--the quest for consensus

1995 ◽  
Vol 7 (4) ◽  
pp. 951 ◽  
Author(s):  
D Mortimer ◽  
RJ Aitken ◽  
ST Mortimer ◽  
AA Pacey
Keyword(s):  
Sperm Morphology ◽  
State Of The Art ◽  
Semen Analysis ◽  
Analytical Techniques ◽  
Human Sperm ◽  
Diagnostic Value ◽  
Clinical Use ◽  
Workshop Report ◽  
Sperm Analysis ◽  
Current State

The goals of the Workshop were to establish the current state-of-the-art in the clinical use of computer-aided sperm analysis (CASA), to identify areas of contention or confusion in the use of CASA technology, and to reach consensus on these matters to facilitate the wider use, and usefulness, of these instruments in clinical and research applications. CASA assessments of sperm morphology were not considered as they were discussed in a separate Workshop (Advanced Techniques in Sperm Preparation and Imaging) on analytical techniques. Four topics were considered: (a) CASA and semen analysis; (b) the diagnostic value of sperm kinematics in semen; (c) human sperm hyperactivation; and (d) CASA and fertility prediction. In all, 17 specific consensus points were identified.

scholarly journals Bio-Inspired Polymer-Polymer Hybrids for Medical Applications

2021 ◽  
Author(s):  
Gokhan Demirci ◽  
Malwina Niedzwiedz ◽  
Nina Kantor-Malujdy ◽  
Miroslawa El Fray
Keyword(s):  
Drug Delivery ◽  
Hybrid Systems ◽  
Drug Delivery Systems ◽  
State Of The Art ◽  
Antibacterial Properties ◽  
Delivery Systems ◽  
Medical Applications ◽  
Polymer Hybrid ◽  
Current State ◽  
Advanced Biomaterials

Novel bio-inspired materials have gained recently great attention, especially in medical applications. Applying sophisticated design and engineering methods, various polymer-polymer hybrid systems with outstanding performance have been developed in last decades. Hybrid systems composed of bioelastomers and hydrogels are very attractive due to their high biocompatibility and elastic nature for advanced biomaterials used in various medical applications such as drug delivery systems and scaffolds for tissue engineering. Herein, we describe the advances in current state-of-the-art design, properties and applications of polymer-polymer hybrid systems in medical applications. Bio-inspired functionalities, including bioadhesiveness, injectability, antibacterial properties and degradability applicable to advanced drug delivery systems and medical devices will be discussed in a context of future efforts towards development of bioinspired materials.

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