Wounding in lizards results in the release of beta-defensins at the wound site and formation of an antimicrobial barrier

2012 ◽  
Vol 36 (3) ◽  
pp. 557-565 ◽  
Author(s):  
Lorenzo Alibardi ◽  
Andrea Celeghin ◽  
Luisa Dalla Valle
2020 ◽  
Vol 26 (36) ◽  
pp. 4551-4568
Author(s):  
Mohammad Kashif Iqubal ◽  
Sadaf Saleem ◽  
Ashif Iqubal ◽  
Aiswarya Chaudhuri ◽  
Faheem Hyder Pottoo ◽  
...  

A wound refers to the epithelial loss, accompanied by loss of muscle fibers collagen, nerves and bone instigated by surgery, trauma, frictions or by heat. Process of wound healing is a compounded activity of recovering the functional integrity of the damaged tissues. This process is mediated by various cytokines and growth factors usually liberated at the wound site. A plethora of herbal and synthetic drugs, as well as photodynamic therapy, is available to facilitate the process of wound healing. Generally, the systems used for the management of wounds tend to act through covering the ruptured site, reduce pain, inflammation, and prevent the invasion and growth of microorganisms. The available systems are, though, enough to meet these requirements, but the involvement of nanotechnology can ameliorate the performance of these protective coverings. In recent years, nano-based formulations have gained immense popularity among researchers for the wound healing process due to the enhanced benefits they offer over the conventional preparations. Hereupon, this review aims to cover the entire roadmap of wound healing, beginning from the molecular factors involved in the process, the various synthetic and herbal agents, and combination therapy available for the treatment and the current nano-based systems available for delivery through the topical route for wound healing.


Nanomedicine ◽  
2020 ◽  
Vol 15 (23) ◽  
pp. 2241-2253
Author(s):  
Pengju Zhang ◽  
Yuqi Jiang ◽  
Dan Liu ◽  
Yan Liu ◽  
Qinfei Ke ◽  
...  

Aim: To develop an effective strategy for increasing angiogenesis at diabetic wound sites and thereby accelerating wound healing. Materials & methods: A micropatterned nanofibrous scaffold with bioglass nanoparticles encapsulated inside coaxial fibers was prepared by electrospinning. Results: Si ions could be released in a sustained manner from the scaffolds. The hierarchical micro-/nano-structure of the scaffold was found to act as a temporary extracellular matrix to promote endothelial cell adhesion and growth. The scaffold greatly improved angiogenesis and collagen deposition at the wound site, which shortened the healing period of diabetic wounds. Conclusion: This study provides a promising therapeutic option for chronic diabetic wounds with improved angiogenesis.


BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Vipul Batra ◽  
Vanya Bhushan ◽  
Syed Azmal Ali ◽  
Parul Sarwalia ◽  
Ankit Pal ◽  
...  

Abstract Background Low conception rate (CR) despite insemination with morphologically normal spermatozoa is a common reproductive restraint that limits buffalo productivity. This accounts for a significant loss to the farmers and the dairy industry, especially in agriculture-based economies. The immune-related proteins on the sperm surface are known to regulate fertility by assisting the spermatozoa in their survival and performance in the female reproductive tract (FRT). Regardless of their importance, very few studies have specifically catalogued the buffalo sperm surface proteome. The study was designed to determine the identity of sperm surface proteins and to ascertain if the epididymal expressed beta-defensins (BDs), implicated in male fertility, are translated and applied onto buffalo sperm surface along with other immune-related proteins. Results The raw mass spectra data searched against an in-house generated proteome database from UniProt using Comet search engine identified more than 300 proteins on the ejaculated buffalo sperm surface which were bound either by non-covalent (ionic) interactions or by a glycosylphosphatidylinositol (GPI) anchor. The singular enrichment analysis (SEA) revealed that most of these proteins were extracellular with varied binding activities and were involved in either immune or reproductive processes. Flow cytometry using six FITC-labelled lectins confirmed the prediction of glycosylation of these proteins. Several beta-defensins (BDs), the anti-microbial peptides including the BuBD-129 and 126 were also identified amongst other buffalo sperm surface proteins. The presence of these proteins was subsequently confirmed by RT-qPCR, immunofluorescence and in vitro fertilization (IVF) experiments. Conclusions The surface of the buffalo spermatozoa is heavily glycosylated because of the epididymal secreted (glyco) proteins like BDs and the GPI-anchored proteins (GPI-APs). The glycosylation pattern of buffalo sperm-surface, however, could be perturbed in the presence of elevated salt concentration or incubation with PI-PLC. The identification of numerous BDs on the sperm surface strengthens our hypothesis that the buffalo BDs (BuBDs) assist the spermatozoa either in their survival or in performance in the FRT. Our results suggest that BuBD-129 is a sperm-surface BD that could have a role in buffalo sperm function. Further studies elucidating its exact physiological function are required to better understand its role in the regulation of male fertility.


2021 ◽  
Vol 42 (Supplement_1) ◽  
pp. S190-S191
Author(s):  
Joshua Frost ◽  
Nathan Hallier ◽  
Tanir Moreno ◽  
Jared Covell ◽  
Ryan Keck ◽  
...  

Abstract Introduction A critical component of split-thickness skin grafting is the fixation of the skin graft to the wound site. Graft displacement can result in graft failure, especially during the initial 48–72 hours following application. The most common method of securing grafts is with the use of staples, sometimes with the addition of fibrin glue in order to aid both graft adhesion and homeostasis. The use of staples, however, is associated with significant levels of patient discomfort, especially during staple removal. A possible alternative to staples is the use of liquid adhesives, in combination with steri-strips, to anchor the edges of skin grafts to intact skin. Certain liquid adhesives, such as gum-based resins, are cheaper to use than staples and offer the potential to secure small split-thickness skin grafts without the associated pain of staples. In this pilot study, we examined the effectiveness of using a combination of gum-based resin (Gum Mastic-Storax-Msal-Alcohol), fibrin glue, and steri-strips to secure partial-thickness grafts in 8 patients without the use of staples or sutures. Methods Patients were included in the study who required split-thickness skin grafts to treat wounds involving less than or equal to 15% total surface body area and whose wounds were not located in areas prone to graft displacement, such as the axilla and groin. For each patient, skin grafts were secured using fibrin glue (sprayed over the entire wound), and a combination of liquid adhesive and steri-strips applied around the wound perimeter. The success of each graft was determined by the percentage of graft take. Results From January 1st, 2020 to April 30th, 2020, 8 patients were identified who fit the inclusion criteria. Five of the patients received grafts to their lower extremities, two patients received grafts to their upper extremities, and one of the patients received a graft to the torso. The average wound site that was grafted was 116.7 cm2. Average graft take among the 8 patients was 96.9%, with a range of 90%-100%. No complications at the graft site were noted, such as hematomas or any other event that resulted in graft displacement or failure. Conclusions The results of the study demonstrate that a combination of liquid adhesive, fibrin glue, and steri-strips, can be used as an effective alternative to staples in small split-thickness skin grafts. The use of liquid adhesive in place of staples was advantageous because it eliminated to need for staple removal, which resulted in less discomfort for the patient and less work for the nursing staff.


2020 ◽  
pp. 004051752092551
Author(s):  
Javeed A Awan ◽  
Saif Ur Rehman ◽  
Muhammad Kashif Bangash ◽  
Fiaz Hussain ◽  
Jean-Noël Jaubert

Curcumin is a naturally occurring hydrophobic polyphenol compound. It exhibits a wide range of biological activities such as antibacterial, anti-inflammatory, anti-carcinogenic, antifungal, anti-HIV, and antimicrobial activity. In this research work, antimicrobial curcumin nanofibrous membranes are produce by an electrospinning technique using the Eudragit RS 100 (C19H34ClNO6) polymer solution enriched with curcumin. The morphology and chemistry of the membrane are analyzed using scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) spectroscopy. Kirby Bauer disk diffusion tests are carried out to examine the antibacterial effectiveness of the membrane. Experimental results show that the nanofibers produced are of uniform thickness morphology and curcumin is successfully incorporated into the nanofibrous mat, while no chemical bonding was observed between curcumin and the polymer. The antimicrobial curcumin nanofibrous membranes can be effectively applied as antimicrobial barrier in a wide variety of medical applications such as wound healing, scaffolds, and tissue engineering.


2009 ◽  
Vol 39 (1) ◽  
pp. 13-20 ◽  
Author(s):  
Steven Stack ◽  
Ira Wasserman
Keyword(s):  

2017 ◽  
Vol 5 (8) ◽  
pp. 1670-1677 ◽  
Author(s):  
Hansol Kim ◽  
Byung Hwi Kim ◽  
Beom Kang Huh ◽  
Yeon Chun Yoo ◽  
Chan Yeong Heo ◽  
...  

An anti-inflammatory nanoparticle-coated suture reduces inflammation and pain at the wound site.


PLoS ONE ◽  
2015 ◽  
Vol 10 (6) ◽  
pp. e0126868 ◽  
Author(s):  
Abdelhabib Semlali ◽  
Abdullah Al Amri ◽  
Arezki Azzi ◽  
Omair Al Shahrani ◽  
Maha Arafah ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document