Ying Yuan1, Yahui Niu1, Weidong Xiao1, Baiwen Qi1, Xiang Hu1, Aixi Yu2. 1. Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, China. 2. Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, China. Electronic address: yuaixi666@163.com.
Abstract
BACKGROUND: Lymphatic leakage is one of the severe complications after lymphadenectomy. However, efficient treatment it still unclear. MATERIALS AND METHODS: We employed inguinal lymphadenectomy and saphenous lymphatic vessel excision to establish a inguinal lymphatic leakage rabbit model. Rabbits with bilateral lymphatic leakage were divided in two groups, which were subject to negative pressure wound therapy (NPWT) on right sides and dressing change on left sides, respectively. Following 7-11 d of treatment, skin thickness and drainage volume were measured. Western blot and RT-PCR were used for analyzing the VEGF-C level. Tissues of wound were dissected and subject to anti-LYVE-1 immunohistochemical for lymphatic average positive staining area percentage and the ratio of lymphatic lumen area evaluation. RESULTS: Our lymphatic leakage model showed significant lymph stasis, delayed wound healing, and skin swelling and was confirmed by methylene blue instillation. Using this rabbit model, we found that NPWT could largely promote wound healing and resolution of skin edema. Compared with the dressing change group, the thickness of the dermis layer in the NPWT group was significantly reduced. Western blot and RT-PCR analysis showed a decrease of VEGF-C in the NPWT group. The immunohistochemical result of the NPWT group did not show a significant change in lymphatic average positive staining area percentage, whereas the ratio of lymphatic lumen area was significantly decreased, suggesting that NPWT treatment can significantly compress the dilated lymphatic vessels. CONCLUSIONS: We successfully established the first clinically relevant lymphatic leakage model in rabbits. NPWT can be an effective treatment for lymphatic leakage via reducing edema and lymphatic stasis by compressing dilated lymph vessels and promoting lymphatic drainage.
BACKGROUND: Lymphatic leakage is one of the severe complications after lymphadenectomy. However, efficient treatment it still unclear. MATERIALS AND METHODS: We employed inguinal lymphadenectomy and saphenous lymphatic vessel excision to establish a inguinal lymphatic leakage rabbit model. Rabbits with bilateral lymphatic leakage were divided in two groups, which were subject to negative pressure wound therapy (NPWT) on right sides and dressing change on left sides, respectively. Following 7-11 d of treatment, skin thickness and drainage volume were measured. Western blot and RT-PCR were used for analyzing the VEGF-C level. Tissues of wound were dissected and subject to anti-LYVE-1 immunohistochemical for lymphatic average positive staining area percentage and the ratio of lymphatic lumen area evaluation. RESULTS: Our lymphatic leakage model showed significant lymph stasis, delayed wound healing, and skin swelling and was confirmed by methylene blue instillation. Using this rabbit model, we found that NPWT could largely promote wound healing and resolution of skin edema. Compared with the dressing change group, the thickness of the dermis layer in the NPWT group was significantly reduced. Western blot and RT-PCR analysis showed a decrease of VEGF-C in the NPWT group. The immunohistochemical result of the NPWT group did not show a significant change in lymphatic average positive staining area percentage, whereas the ratio of lymphatic lumen area was significantly decreased, suggesting that NPWT treatment can significantly compress the dilated lymphatic vessels. CONCLUSIONS: We successfully established the first clinically relevant lymphatic leakage model in rabbits. NPWT can be an effective treatment for lymphatic leakage via reducing edema and lymphatic stasis by compressing dilated lymph vessels and promoting lymphatic drainage.
Authors: Ryan M Naylor; Hannah E Gilder; Nikita Gupta; Thomas C Hydrick; Joshua R Labott; David J Mauler; Taylor P Trentadue; Brandon Ghislain; Benjamin D Elder; Jeremy L Fogelson Journal: World Neurosurg Date: 2020-01-28 Impact factor: 2.104
Authors: Ronald P Silverman; John Apostolides; Abhishek Chatterjee; Anthony N Dardano; Regina M Fearmonti; Allen Gabriel; Robert T Grant; Owen N Johnson; Suresh Koneru; Anna A Kuang; Andrea A Moreira; Steven R Sigalove Journal: Int Wound J Date: 2021-08-12 Impact factor: 3.315