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Showing 2 results for Diabetic Ulcer
Evaluation of the effect of an intradermal injection of Wharton's jelly-derived mesenchymal stem cells in diabetic wound healing in animal model
Sona Zare, Rahim Ahmadi, Abdolreza Mohammadnia , Mohammad Ali Nilforouszadeh, Minoo Mahmoodi,
Volume 78, Issue 12 (3-2021)
Abstract
Background: The application of mesenchymal stem cells in the healing of chronic wounds is one of the most challenging issues in cell therapy. The present study investigated the efficacy of intradermal injection of umbilical cord Wharton's Jelly-derived mesenchymal stem cells in diabetic wound healing using ultrasound imaging in an animal model.
Methods: During this experimental laboratory study that was performed in the Skin and Stem Cell Research Center, Tehran University of Medical Sciences between October 2017 and October 2016, mesenchymal stem cells were isolated from umbilical cord Wharton's jelly of 10 neonates. The cells were passage. The differentiation potential of cells to osteocyte and adipose cells was evaluated. The expression of specific markers of mesenchymal stem cells was evaluated using flow cytometry. The viability and quality of cells were evaluated before transplantation. The diabetes model was developed by intraperitoneal injection of streptozotocin in 42 male Wistar rats. The animals were randomly divided into two groups: normal saline injection (control) and cell injection. Cell transplantation was performed intradermally. Skin thickness and density were assessed using ultrasound imaging on days 7, 14 and 21. Finally, the data were analyzed using a t-test and analysis of variance.
Results: Injection of mesenchymal stem cells caused faster closing of the wound. The results of biometric measurement of wound skin in rats showed that skin thickness and density on days 7, 14 and 21 in the Wharton jelly mesenchymal stem cell injection group had a significant increase compared to the control group.
Conclusion: The results of cell analysis showed that the isolated cells are the same as mesenchymal stem cells. The cells were of the required health and quality. Intradermal injection of mesenchymal stem cells in diabetic wound area caused faster healing in diabetic rats, according to which, such stem cells can be considered in cell therapy, especially in the field of chronic wound healing.

The effects of umbilical cord Wharton jelly derived mesenchymal stem cells injection on diabetic wound healing in male rats
Mohammad Ali Nilforoushzadeh, Sona Zare, Rahim Ahmadi, Nasrin Zoroufi, Mina Mahmoodipour,
Volume 79, Issue 3 (6-2021)
Abstract
Background: The number of patients suffering from diabetic ulcers has been increased in recent years and the current therapies have faced failure. This study aimed to investigate the effects of Wharton’s jelly stem cells (WJMSCs) on the diabetic wound in an animal mode.
Methods: During this laboratory experimental study carried out in Skin and Stem Cells Research Center from March 2021 to November 2021, WJMSCs were isolated and their differentiation capability to osteocytes and adipose cells was assessed using the colorimetric method, and the expression of specific markers was evaluated using flow cytometry. 12 male Wistar rats weighing 200 to 250 grams were purchased from the Pasteur Institute and kept in the animal room in standard condition. Streptozotocin was used to induce diabetes in male Wistar rats. Animals were divided to control (normal saline injection: n=6) and WJMSCs injection (n=6) groups. Wounds with 0.8 cm in diameter were made on the back of rats. After subdermal injection of normal saline and WJMSCs, wound healing was evaluated 7, 14 and 21 days using the photography method. Data were analyzed using a t-test and analysis of variance.
Results: The results showed that the isolation process should be performed no later than a few hours after the cesarean section. Storing the sample for one day or more caused sample contamination leading to significant failure in cell proliferation and differentiation. WJMSCs were positive for specific mesenchymal stem cell markers (CD44, D73, CD90 and CD 105, and negative for CD45 and CD 34. They were capabale to differentiate into osteocytes and adipose cells and had a high viability rate (83.1%). Subdermal injection of WJMSCs in diabetic rats resulted in acceleration of diabetic wound healing compared with the control group.
Conclusion: Subdermal injection of WJMSCs can effectively accelerate diabetic wound healing. According to which, applying Wharton’s jelly stem cells can be considered in cell therapy particularly in the field of diabetic wound healing.

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