Objective Extracorporeal shock wave (ESW) can promote angiogenesis and tissue repair. To investigate the influence of ESW therapy on the histological features of diabetic chronic wounds and wound healing. Methods Ninety-six male Sprague Dawley rats with weight (220 ± 20) g were divided into 3 groups (n=32): diabetic control group, ESW treatment group, and normal control group. The diabetic rats were prepared in diabetic control group and ESW treatment group by intraperitoneal injection of Streptozotocin (60 mg/kg). Then a circular full-thickness skin wound of 1.8 cm in diameter was made at the back of diabetic rats to establish the diabetic chronic wound model, and the same wound was made in normal control group. In ESW treatment group, ESW (0.11 mJ/mm2, 1.5 Hz energy, and 500 pulses) was applied to treat the wound at 1 day after wounding; in two control groups, no ESW treatment was given. The wound healing and histological changes were observed by HE and Masson staining at 3, 7, and 14 days after treatment; and the cell proliferation, angiogenesis, and collagen deposition were observed by CD31 and proliferating cell nuclear antigen (PCNA) immunohistochemical staining. Results The wound closure rate in diabetic control group was lower, and the healing time was significantly longer than those in normal control group (P lt; 0.05); at 3, 7, and 14 days after treatment, the inflammatory cell infiltration in wound tissue was obvious, and the relative area density of collagen fibers, wound microvessel density (MVD), and the relative density of PCNA-positive cells were significantly lower than those in normal control group (P lt; 0.05). The wound healing time was significantly shorter and the wound closure rate was significantly higher in ESW treatment group than those in the diabetic control group (P lt; 0.05). At different time points in ESW treatment group, the inflammatory cells signficantly reduced, while the relative area density of collagen fibers, MVD, and relative density of PCNA-positive cells significantly increased when compared with those in diabetic control group (P lt; 0.05). No significant difference in MVD and relative density of PCNA-positive cells was found between ESW treatment group and normal control group (P gt; 0.05). Conclusion Low-energy ESW treatment can inhibit the local inflammatory response, promote cell proliferation, increase angiogenesis and collagen deposition, and enhance granulation tissue formation, and so it can promote chronic wound healing in diabetic rats.
摘要:目的:总结胸心血管外科慢性伤口换药的经验。方法：2008年11月2009年4月我科共发生12例手术切口裂开病例，使用贝复济喷洒创面，藻酸钙敷料填塞创面，外用二层敷料固定，根据渗液情况决定更换敷料的频率，高渗出时每天更换，中等渗出时每2天更换，少量渗出时每3天更换。结果：本组12例患者，11例患者伤口均达到二期愈合，平均愈合时间为（12±2）天，另外1例转烧伤科行植皮术，后愈合。结论：通过联合使用贝复济和藻酸钙敷料，使本组病例的渗出减少，创面肉芽生长迅速，伤口疼痛减轻或消失，伤口周围皮肤免受浸渍，伤口快速愈合。Abstract: Objective: To introduce the methods of using streptogenin spray and the alginate dressing on Cardiac wound disruption. Methods: Our department had 12 cases of wound disruption from the November 2008 to the April 2009, We sprinkled the streptogenin spray to wound, then filled wound with the alginate dressing, finally fix wound with gauze and adhesive tape.According to the volume of the exudation, we decided how often to change the dressings. When the exudation volume was high ,We changed the dressing every day; While medium, We changed every two days ; When low ,We changed every three days. Results:Eleven 11 of 12 wounds got second phase of healing, the average healing time was (12±2) days. Conclusion: Using of the Streptogenin spray and the alginate dressing on disruption wound can reduce the exudation volume and wound pain, meanwhile it can progress the growth of granulation , so the wounds healed quickly.
Diabetic foot is one of the serious complications of diabetic patients. It is caused by diabetes combined with different degrees of lower extremity vascular lesions and neuropathy, and the wound can not heal for a long time. The serious results can cause bone marrow infection, bone destruction, and have high disability and death rate. At present, there are various treatment methods for diabetic foot chronic wound. On the basis of internal medicine controlling blood sugar, anti infection, lowering blood lipid, improving microcirculation and nourishment nerve, the surgical method is adopted, including the debridement of the necrosis in a short time to prevent the infection from spreading; maggot biological debridement and ozone chemical debridement will promote the growth of granulation tissue while controlling infection. Skin grafting, skin flap transplantation, skin distraction closure can be used to repair soft tissue defects, or fat transplantation, platelet-rich plasma, and rich blood are used for the refractory wound after infection control. In patients with diabetic foot, the reconstruction of lower limb blood supply is beneficial to the recovery of chronic ischemic wounds. It is feasible to improve the blood supply of the lower extremities, improve the blood supply of the lower extremity artery bypass grafting, and improve the microcirculation of the peripheral vessels around the lower extremities. Lower extremity vascular bypass pressure perfusion therapy for vascular network expansion, tibia lateral moving technique for lower limb microcirculation reconstruction. For diabetic foot ulcer caused by peripheral neuropathy, such as Charcot foot, while the application of external fixator, total contact cast technology of affected foot for reducing treatment to promote wound healing; the preparation of orthopedic shoes can play a maximum protective effect on the healing of diabetic foot wound healing.
ObjectiveTo review the clinical research progress of mesenchymal stem cells (MSCs) in the treatment of chronic wounds.MethodsThe literature related to the chronic wound repair with MSCs at home and abroad in recent years was extensively reviewed, and the possible mechanism of MSCs in the treatment of chronic wounds, as well as its application and existing problems were summarized.ResultsMSCs can participate in all aspects of chronic wound healing to promote wound healing, and has shown broad application prospects in clinical trials. MSCs commonly used in clinical research include bone marrow-derived MSCs, adipose-derived tissue MSCs, and umbilical cord-derived MSCs.ConclusionMSCs treatment is a promising strategy for the chronic wounds, but there are still many problems in its widespread clinical application that require further research.
Objective To explore the clinical practice effects of multi-disciplinary team (MDT) model led by enterostomal therapist in the diagnosis and treatment of chronic wounds. Methods Three types of subspecialty patients diagnosed and treated by the MDT team for chronic wounds in the Wound Care Center of West China Hospital of Sichuan University between January 2020 and December 2022, including MDT for diabetes feet, MDT for immune ulcer and MDT for other refractory wounds, were retrospectively included. The clinical data, healing rate, healing time, and satisfaction rate of patients were analyzed. Results A total of 176 patients were included, including 103 cases of diabetes foot, 31 cases of immune ulcer, and 42 cases of other refractory wounds. The healing rate was 71.84% in patients with MDT of diabetes foot, 74.19% in patients with MDT of immune ulcer and 78.57% in patients with MDT of other refractory wound. The average healing time was 18.10 weeks for patients with diabetes foot, 19.69 weeks for patients with immune ulcer, and 20.53 weeks for patients with other refractory wounds. The satisfaction rates of patients in the three groups were relatively high (>95%). Conclusion The MDT model led by enterostomal therapist can provide comprehensive treatment plans for difficult and complex chronic wound patients, improve the treatment outcomes of chronic wounds, and is worthy of further promotion and application in the clinical diagnosis and treatment of chronic wounds.