Pharmaceutical nano-fibers have attracted widespread attention from researchers for reasons such as adaptability of the electro-spinning process and ease of production. As a flexible method for fabricating nano-fibers, electro-spinning is extensively used. An electro-spinning unit is composed of a pump or syringe, a high voltage current supplier, a metal plate collector and a spinneret. Optimization of the attained nano-fibers is undertaken through manipulation of the variables of the process and formulation, including concentration, viscosity, molecular mass, and physical phenomenon, as well as the environmental parameters including temperature and humidity. The nano-fibers achieved by electro-spinning can be utilized for drug loading. The mixing of two or more medicines can be performed via electro-spinning. Facilitation or inhibition of the burst release of a drug can be achieved by the use of the electro-spinning approach. This potential is anticipated to facilitate progression in applications of drug release modification and tissue engineering (TE). The present review aims to focus on electro-spinning, optimization parameters, pharmacological applications, biological characteristics, and in vivo analyses of the electro-spun nano-fibers. Furthermore, current developments and upcoming investigation directions are outlined for the advancement of electro-spun nano-fibers for TE. Moreover, the possible applications, complications and future developments of these nano-fibers are summarized in detail.

Electrospun Nano-Fibers for Biomedical and Tissue Engineering Applications: A Comprehensive Review

Key advances of carboxymethyl cellulose in tissue engineering & 3D bioprinting applications

Electrospun pectin/modified copper-based metal-organic framework (MOF) nanofibers as a drug delivery system.

Presently, notwithstanding the progress regarding wound-healing management, the treatment of the majority of skin lesions still represents a serious challenge for biomedical and pharmaceutical industries. Thus, the attention of the researchers has turned to the development of novel materials based on cellulose derivatives. Cellulose derivatives are semi-synthetic biopolymers, which exhibit high solubility in water and represent an advantageous alternative to water-insoluble cellulose. These biopolymers possess excellent properties, such as biocompatibility, biodegradability, sustainability, non-toxicity, non-immunogenicity, thermo-gelling behavior, mechanical strength, abundance, low costs, antibacterial effect, and high hydrophilicity. They have an efficient ability to absorb and retain a large quantity of wound exudates in the interstitial sites of their networks and can maintain optimal local moisture. Cellulose derivatives also represent a proper scaffold to incorporate various bioactive agents with beneficial therapeutic effects on skin tissue restoration. Due to these suitable and versatile characteristics, cellulose derivatives are attractive and captivating materials for wound-healing applications. This review presents an extensive overview of recent research regarding promising cellulose derivatives-based materials for the development of multiple biomedical and pharmaceutical applications, such as wound dressings, drug delivery devices, and tissue engineering.

An Overview of Cellulose Derivatives-Based Dressings for Wound-Healing Management

https://onlinelibrary.wiley.com/doi/pdf/10.1002/smsc.202100003

3D Electrospun Synthetic Extracellular Matrix for Tissue Regeneration

Electrospinning as method for fabrication of wound dressing materials with included medical plant extracts for wound treatment has lately gained increasing attention. However, the transfer of nanofiber fabrication with included plant extracts from the research to the pilot and industrial scale production, using needleless electrospinning is a vital area of research, which could enable its large-scale commercial exploitation. Carboxymethyl cellulose (CMC) is a cheap, water soluble biopolymer, and in blends with the spinning agent polyethylene oxide (PEO) it is a suitable polymer for a large-scale nanofiber production. Thus, this study addresses the needleless electrospinning of CMC/PEO/plant extract blend aqueous solutions in order to fabricate cellulose based wound dressing material, suitable for treatment of acute wounds. The influence of plant extracts on the morphology of the electrospun mats was further evaluated. The antioxidant and antibacterial properties of the as-prepared electrospun mats were determined, where special attention was devoted to the stability/degradation study of phenolic compounds in plant extracts during the electrospinning process. This research was complemented by the release study and cell viability testing with results indicating a promising potential of this product to use for wound care as a self-contained wound dressing or as a part of number of already existing novel wound dressing materials.

Needleless electrospun carboxymethyl cellulose/polyethylene oxide mats with medicinal plant extracts for advanced wound care applications

Functional dextran amino acid ester particles derived from N-protected S-trityl-L-cysteine.

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Needleless electrospun carboxymethyl cellulose/polyethylene oxide mats with medicinal plant extracts for advanced wound care applications

Functional dextran amino acid ester particles derived from N-protected S-trityl-L-cysteine.