scholarly journals Possibilities of using allogeneic mesenchymal stem cells and wound dressings based on aliphatic copolyamide in microautodermoplasty

2020 ◽  
Vol 8 (2) ◽  
pp. 185-196
Author(s):  
Vasily A. Gordienko ◽  
Evgenii V. Zinoviev ◽  
Denis V. Kostyakov ◽  
Marat S. Asadulaev ◽  
Anton S. Shabunin ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Clinical Medicine ◽  
Medical Science ◽  
Local Treatment ◽  
Treatment Algorithm ◽  
Wound Dressings ◽  
Results Of Treatment ◽  
Healing Index ◽  
Treatment Of Wounds

Background. The treatment of victims with wound defects is an urgent problem of clinical medicine that doctors of various specialties, mainly surgeons and traumatologists, must face. Regardless of the etiology of the traumatic agent, the wound process is always subjected to fundamental pathophysiological processes. Despite the advances made by medical science in the local treatment of wounds (cell technology, modern wound coverings, and others), surgical procedures remain the main methods, and the search for new techniques to optimize reparative regeneration continues. This ongoing search indicates the absence of a universal algorithm for treating such defects. This lack of a universal treatment algorithm is of particular importance for assisting victims with extensive defects, which often leads to a shortage of donor resources. Aim. The aim of this study was to increase the efficiency of microautodermoplasty due to the use of allogeneic mesenchymal stem cells and wound dressings based on aliphatic copolyamide. Materials and methods. This paper presents the results of an experimental study involving 50 rats. All animals were divided into groups considering the choice of the method of the local treatment. The experimental wound was modeled according to its original technique. The evaluation of the effectiveness of the analyzed methods was performed using planimetric and histological research methods, and by calculating the healing index. Results. The most effective methods for treating experimental wounds using microautodermoplasty (MADP) are wound dressings based on aliphatic copolyamide (CoPA) and adipogenic mesenchymal stem cells (AMSC). By 28 days of treatment after performing MADP + CoPA wound dressings + AMSC, it was possible to reduce the defect area by 16 times compared with the control, and the healing index was the maximum value among all methods 12.5 units. The high regenerative potential was also confirmed by the results of the histological examination. The worst results were found in the MADP group with AMSK that did not cover the wounds with skin or wound dressing. Conclusion. The introduction of the analyzed methods into clinical practice will improve the results of treatment of patients with wound defects of various etiologies.

scholarly journals Tailored Hydrogels as Delivery Platforms for Conditioned Medium from Mesenchymal Stem Cells in a Model of Acute Colitis in Mice

Pharmaceutics ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1127
Author(s):  
Juan Sendon-Lago ◽  
Lorena Garcia-del Rio ◽  
Noemi Eiro ◽  
Patricia Diaz-Rodriguez ◽  
Leandro Avila ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Body Weight ◽  
Conditioned Medium ◽  
Local Treatment ◽  
Histopathological Analysis ◽  
Mrna Levels ◽  
Acute Colitis ◽  
Tnf Α ◽  
Ifn Γ

Inflammatory bowel disease (IBD), including Crohn’s disease (CD) and ulcerative colitis (UC), is increasingly prevalent and current therapies are not completely effective. Mesenchymal stem cells are emerging as a promising therapeutic option. Here, the effect of local hydrogel application loaded with conditioned medium (CM) from human uterine cervical stem cells (hUCESC-CM) in an experimental acute colitis mice model has been evaluated. Colitis induction was carried out in C57BL/6 mice by dissolving dextran sulfate sodium (DSS) in drinking water for nine days. Ulcers were treated by rectal administration of either mesalazine (as positive control) or a mucoadhesive and thermosensitive hydrogel loaded with hUCESC-CM (H-hUCESC-CM). Body weight changes, colon length, and histopathological analysis were evaluated. In addition, pro-inflammatory TNF-α, IL-6, and IFN-γ mRNA levels were measured by qPCR. Treatment with H-hUCESC-CM inhibited body weight loss and colon shortening and induced a significant decrease in colon mucosa degeneration, as well as TNF-α, IFN-γ, and IL-6 mRNA levels. Results indicate that H-hUCESC-CM effectively alleviated DSS-induced colitis in mice, suggesting that H-hUCESC-CM may represent an attractive cell-free therapy for local treatment of IBD.

scholarly journals Role of the autologous mesenchymal stem cells compared with platelet rich plasma on cicatrization of cutaneous wounds in diabetic mice

2016 ◽  
Vol 36 (7) ◽  
pp. 617-624
Author(s):  
Napoleão M. Argolo Neto ◽  
Ricardo J. Del Carlo ◽  
Betânia S. Monteiro ◽  
Nance B. Nardi ◽  
Pedro C. Chagastelles ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Platelet Rich Plasma ◽  
Cutaneous Lesion ◽  
Healing Time ◽  
Diabetic Mice ◽  
Cutaneous Lesions ◽  
Cutaneous Wounds ◽  
Autologous Mesenchymal Stem Cells ◽  
Treatment Of Wounds

Abstract: Chronic cutaneous lesions affect 15% of diabetic human patients and represent a risk 15 to 46 times larger of limb amputations compared to people with normal glycemia. It is assumed that half of these amputations could be prevented by early treatment of wounds, for example, with proper cell therapy. Objectives: In this study, the action of the autologous transplant of mesenchymal stem-cells (MSC) was evaluated compared to the treatment with autologous platelet rich plasma (PRP) in the cicatrization of cutaneous lesions induced in diabetic mice. These animals were previously treated with streptozootocin to induce diabetes mellitus and round wounds of 1.5cm in diameter were created in the posterior region. Diameters of the wounds and healing time were evaluated during 30 days and the results were submitted to variance analysis and Tukey's test average. It was noticed that the animals treated with MSC presented a more accelerated cicatrization of the cutaneous lesion than the animals treated with PRP. However, the treatment with PRP presented better results than just the daily asepsis of the lesions with saline or covering them with semi-permeable bandage. Besides, the use of semi-permeable bandage kept the cutaneous lesions of diabetic mice did not interfere negatively with cicatrization, proved to be harmless to use, but kept the cutaneous lesions more hydrated than the ones exposed to the environment.

scholarly journals Mesenchymal Stem Cells Induce Regulatory T-cell Population in Human SLE

2020 ◽  
Vol 19 (4) ◽  
pp. 743-748
Author(s):  
Riyadh Ikhsan ◽  
Agung Putra ◽  
Delfitri Munir ◽  
Dewi Masyithah Darlan ◽  
Bantar Suntoko ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
T Cell ◽  
Lupus Erythematosus ◽  
Mononuclear Cells ◽  
Medical Science ◽  
Cell Subset ◽  
Cell Phenotype ◽  
Control Group ◽  
Trypan Blue Exclusion

Background: The mechanisms underlying peripheral disorders during systemic lupus erythematosus (SLE) were found to be shared with tolerance disorders and mediated by T-regulator (T-reg) cells. Mesenchymal stem cells (MSCs) may inhibit T-cell subset differentiation and induce the T-reg cell phenotype. However, the capacity of MSCs to promote functional T-reg cells in SLE patients remains unclear. Objectives: This study aimed to analyze the capacity of MSCs to induce the production of functional CD4+ CD25+ Foxp3+ T-reg cells, in vitro, under co-culture conditions with human SLE cells. Methods: This study used a pre- and post-test control group design. Peripheral blood mononuclear cells (PBMCs) were extracted from SLE patients at the Kariadi Hospital, and MSCs were derived from human umbilical cords (hUCs) The PBMC control group was treated with standard medium, and the treatment group was co-cultured with hUC-MSCs. After 24 hours of co-culture incubation, T-reg cells were removed from the PBMC pool, using magnetic-activated cell sorting (MACS), and the population was assessed using the trypan blue exclusion assay. Results: A significant increase in the population of T-reg cells was observed (P < 0.001) after 24 hours of co-culture incubation with hUC-MSCs. Conclusion: This study concluded that MSCs have the capacity to enhance the T-reg population in human SLE PBMCs. Bangladesh Journal of Medical Science Vol.19(4) 2020 p.743-748

scholarly journals Mechanism of mesenchymal stem cells in spinal cord injury repair through macrophage polarization

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Nan An ◽  
Jiaxu Yang ◽  
Hequn Wang ◽  
Shengfeng Sun ◽  
Hao Wu ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Stem Cells ◽  
Spinal Cord Injury ◽  
Mesenchymal Stem Cells ◽  
Clinical Medicine ◽  
Macrophage Polarization ◽  
Modern Medicine ◽  
Therapeutic Effects ◽  
Inflammatory Reactions ◽  
Cord Injury

AbstractTreatment and rehabilitation of spinal cord injury (SCI) is a major problem in clinical medicine. Modern medicine has achieved minimal progress in improving the functions of injured nerves in patients with SCI, mainly due to the complex pathophysiological changes that present after injury. Inflammatory reactions occurring after SCI are related to various functions of immune cells over time at different injury sites. Macrophages are important mediators of inflammatory reactions and are divided into two different subtypes (M1 and M2), which play important roles at different times after SCI. Mesenchymal stem cells (MSCs) are characterized by multi-differentiation and immunoregulatory potentials, and different treatments can have different effects on macrophage polarization. MSC transplantation has become a promising method for eliminating nerve injury caused by SCI and can help repair injured nerve tissues. Therapeutic effects are related to the induced formation of specific immune microenvironments, caused by influencing macrophage polarization, controlling the consequences of secondary injury after SCI, and assisting with function recovery. Herein, we review the mechanisms whereby MSCs affect macrophage-induced specific immune microenvironments, and discuss potential avenues of investigation for improving SCI treatment.

scholarly journals Modern Wound Dressings: Hydrogel Dressings

Biomedicines ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 1235
Author(s):  
Valentin Brumberg ◽  
Tatiana Astrelina ◽  
Tatiana Malivanova ◽  
Alexander Samoilov
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Targeted Delivery ◽  
Chronic Wounds ◽  
Platelet Rich Plasma ◽  
Healing Process ◽  
Wound Dressings ◽  
Wound Healing Process ◽  
Bioactive Substances ◽  
Advantages And Disadvantages

Chronic wounds do not progress through the wound healing process in a timely manner and are considered a burden for healthcare system; they are also the most common reason for decrease in patient quality of life. Traditional wound dressings e.g., bandages and gauzes, although highly absorbent and effective for dry to mild, exudating wounds, require regular application, which therefore can cause pain upon dressing change. In addition, they have poor adhesional properties and cannot provide enough drainage for the wound. In this regard, the normalization of the healing process in chronic wounds is an extremely urgent task of public health and requires the creation and implementation of affordable dressings for patients with chronic wounds. Modern wound dressings (WDs) are aimed to solve these issues. At the same time, hydrogels, unlike other types of modern WDs (foam, films, hydrocolloids), have positive degradation properties that makes them the perfect choice in applications where a targeted delivery of bioactive substances to the wound is required. This mini review is focused on different types of traditional and modern WDs with an emphasis on hydrogels. Advantages and disadvantages of traditional and modern WDs as well as their applicability to different chronic wounds are elucidated. Furthermore, an effectiveness comparison between hydrogel WDs and the some of the frequently used biotechnologies in the field of regenerative medicine (adipose-derived mesenchymal stem cells (ADMSCs), mesenchymal stem cells, conditioned media, platelet-rich plasma (PRP)) is provided.

scholarly journals Small extracellular vesicles from menstrual blood-derived mesenchymal stem cells (MenSCs) as a novel therapeutic impetus in regenerative medicine

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Lijun Chen ◽  
Jingjing Qu ◽  
Quanhui Mei ◽  
Xin Chen ◽  
Yangxin Fang ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Regenerative Medicine ◽  
Extracellular Vesicles ◽  
Clinical Medicine ◽  
Therapeutic Potential ◽  
Menstrual Blood ◽  
Therapeutic Effects ◽  
Basic Characteristics ◽  
Novel Therapeutic

AbstractMenstrual blood-derived mesenchymal stem cells (MenSCs) have great potential in regenerative medicine. MenSC has received increasing attention owing to its impressive therapeutic effects in both preclinical and clinical trials. However, the study of MenSC-derived small extracellular vesicles (EVs) is still in its initial stages, in contrast to some common MSC sources (e.g., bone marrow, umbilical cord, and adipose tissue). We describe the basic characteristics and biological functions of MenSC-derived small EVs. We also demonstrate the therapeutic potential of small EVs in fulminant hepatic failure, myocardial infarction, pulmonary fibrosis, prostate cancer, cutaneous wound, type-1 diabetes mellitus, aged fertility, and potential diseases. Subsequently, novel hotspots with respect to MenSC EV-based therapy are proposed to overcome current challenges. While complexities regarding the therapeutic potential of MenSC EVs continue to be unraveled, advances are rapidly emerging in both basic science and clinical medicine. MenSC EV-based treatment has great potential for treating a series of diseases as a novel therapeutic strategy in regenerative medicine.

scholarly journals Experimental evaluation of the effectiveness of adipose mesenchymal stem cells in full-thickness skin wounds

2021 ◽  
Vol 9 (2) ◽  
pp. 175-181
Author(s):  
Ilya V. Artsimovich ◽  
Evgenii V. Zinoviev ◽  
Aleksander V. Gostimskii ◽  
Marat S. Asadulaev ◽  
Sergey V. Vissarionov ◽  
...  
Keyword(s):  
Stem Cells ◽  
Wound Healing ◽  
Mesenchymal Stem Cells ◽  
Control Group ◽  
Skin Defect ◽  
Full Thickness ◽  
Skin Defects ◽  
Full Thickness Skin ◽  
Healing Index ◽  
Thickness Skin

BACKGROUND: Currently, numerous techniques or medical devices that allow complete or partial restoration of the lost skin within a short time remain as subjects of development. Many studies have shown the effectiveness of using stem cells in the treatment of full-thickness skin defects, but their use remains very limited. At present, there is no consensus among researchers about the advisability of the use of stem cells in the treatment of burns as well as about the method of their introduction. AIM: This study aimed to examine the possibility of accelerating the reparative histogenesis of tissues in the zone of deep skin burns using cultures of adipogenic mesenchymal cells, as well as to evaluate the effectiveness of various methods of introducing cultures of these cells into the defect zone. MATERIALS AND METHODS: An experimental study was carried out on small laboratory animals (rats). After simulating a grade III burn, mesenchymal stem cells were transplanted and superficially applied to the wound surface or injected under the fascia. In the control group, no wound treatment was performed. To assess the effectiveness of the wound-healing preparations, the appearance of wounds was assessed daily, the nature of the discharge and presence and type of granulations were noted, and the timing of scab rejection and wound healing was recorded. The wound area was assessed using a planimetric method. A histological examination of wound biopsies was carried out on days 7, 14, 21, and 28 of observation. RESULTS: The application of adipogenic mesenchymal stem cells demonstrated the greatest efficiency on the developed burn model. Subfascial administration was less effective, but this method achieved a significant acceleration of wound healing in comparison with the control group. An increase in the healing index by 56.6% demonstrates the highest intensity of reparative regeneration in animals applied with adipogenic mesenchymal stem cells. CONCLUSIONS: The preliminary results show that the application of adipogenic mesenchymal stem cells on the skin defect is more effective than subfascial administration based on the healing index. The use of adipogenic mesenchymal stem cells may substantially increase the effectiveness of the treatment of full-thickness skin defects.

scholarly journals The problem of chronic wounds and the possibility of using mesenchymal stem cells in their treatment

2020 ◽  
Vol 24 (3) ◽  
pp. 518-523
Author(s):  
S. V. Slobodyanyk ◽  
S. D. Khimich ◽  
V. S. Shkolnikov
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Chronic Wounds ◽  
Chronic Wound ◽  
Scientific Publications ◽  
The Past ◽  
Search Terms ◽  
Soft Tissue Diseases ◽  
The Many ◽  
Treatment Of Wounds

Annotation. A review of scientific publications on the problems of chronic wounds and issues of innovative use of mesenchymal stem cells in the treatment of patients with chronic wound defects is presented. We have conducted a systematic review of PubMed and Google Scholar database articles over the past 34 years (1985–2019), more than half of which over the past 5 years. The search terms “chronic wound”, “mesenchymal stem cells” were used during the search. It should be noted that despite the fact that the treatment of wounds and wound infection belongs to the category of the oldest branches of medicine, the treatment of chronic wounds in Ukraine today remains one of the important problems in the treatment of inflammatory soft tissue diseases. None of the many proposed methods and techniques for the treatment of chronic wounds satisfies practical surgeons completely. The results of the treatment of chronic wounds to date remain unsatisfactory. Prospects for the use of mesenchymal stem cells in the treatment of chronic wounds is important and further research.

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