A chemical investigation of plant Rhododendron ungernii revealed that its leaves are rich in phenolic compounds: flavonoids, catechins and leucoanthocyanidins. An ointment for external application containing 5% of crude phenolic compounds from R.ungernii leaves named Rodopes, was developed at the I. Kutatateladze Institute of Pharmacochemistry and approved for treatment of various forms of herpetic disease. Wound healing potential of Rodopes was investigated in an excision wound model in mice. Faster wound closure of excision wounds in Rodopes-treated animals in comparison with untreated controls due to the increased wound contracting ability, wound closure time, and regeneration of tissues at wound site was observed. Treatment with Rodopes in an animal model of wound healing caused the increased infiltration of macrophages, neutrophils, and fibroblasts in the wound bed compared to untreated wounds. Moreover, Rodopes exhibited the ability to accelerate scab rejection and full reepithelization in test wounds with no signs of bacterial contamination and to form smooth soft scars disappearing in just 1-2 days. We suggest that Rodopes ointment can find application in the treatment of wounds which require quick coverage of skin epithelial layers.
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Stem Cell Res Ther
December 2024
National Colorectal Disease CenterNanjing Hospital of Chinese Medicine, Affiliated to Nanjing University of Chinese Medicine, Nanjing, 210022, Jiangsu, People's Republic of China.
Background: Complex perianal fistulas, challenging to treat and prone to recurrence, often require surgical intervention that may cause fecal incontinence and lower quality of life due to large surgical wounds and potential sphincter damage. Human umbilical cord-derived MSCs (hUC-MSCs) and their exosomes (hUCMSCs-Exo) may promote wound healing.
Methods: This study assessed the efficacy, mechanisms, and safety of these exosomes in treating complex perianal fistulas in SD rats.
Am J Pathol
December 2024
Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA. Electronic address:
Tissue inhibitors of metalloproteinases (TIMPs) modulate extracellular matrix (ECM) remodeling for maintaining homeostasis and promoting cell migration and proliferation. Pathological conditions can alter TIMP homeostasis and aggravate disease progression. The roles of TIMPs have been studied in tissue-related disorders; however, their contributions to tissue repair during corneal injury are undefined.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Radiation Biology Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt.
Globally, traumatic injuries and severe hemorrhagic wounds resulting from natural disasters, wars, traffic accidents, and operation rooms, especially during birth, are among the most difficult humanitarian and economic problems. Thus, the priority in emergency medical treatment is reducing unexpected blood loss, which can significantly influence a patient's rescue and recovery speed. For the immediate cessation of bleeding in severe hemorrhagic wounds and to speed up their healing, environmentally friendly γ-ionizing irradiation technology was used to develop innovative natural-based hydrogels impregnated with traditional medicinal plant extracts (MPE) with proven hemostatic and bactericidal potential as potential dressings for hemostasis, infection control, and wound healing.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Raebareli (NIPER-R), Transit Campus, Bijnor-Sisendi Road, Sarojini Nagar, Near CRPF Base Camp, Lucknow, UP 226002, India. Electronic address:
Exosomal non-coding RNAs (ncRNAs), including miRNAs, lncRNAs, and circRNAs, have emerged as crucial modulators in cellular signaling, influencing wound healing processes. Stem cell-derived exosomes, which serve as vehicles for these ncRNAs, show remarkable therapeutic potential due to their ability to modulate wound healing stages, from initial inflammation to collagen formation. These ncRNAs act as molecular signals, regulating gene expression and protein synthesis necessary for cellular responses in healing.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
State Key Laboratory of Resource Insects, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China. Electronic address:
Traditional wound closure methods often present several issues, including additional puncture wounds, adverse effects from anesthesia, and noticeable scarring. Inspired by embryonic wound healing, a Janus hydrogel (PG/Au-Asp@PCM) is designed to manipulate non-invasive wound closure by photothermal-responsive self-contraction of PG/Au-Asp@PCM, which is attributed to the shape memory behavior of PG/Au-Asp@PCM under near-infrared (NIR). Wherein, gelatin acts as a thermally reversible "switch" and polyacrylamide creates stable and cross-linked "net-points".
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