Idrovo Juan-Pablo, Yang Weng-Lang, Jacob Asha, Ajakaiye Michael A, Cheyuo Cletus, Wang Zhimin, Prince Jose M, Nicastro Jeffrey, Coppa Gene F, Wang Ping
Department of Surgery, Hofstra North Shore-LIJ School of Medicine, Manhasset, New York, United States of America.
Department of Surgery, Hofstra North Shore-LIJ School of Medicine, Manhasset, New York, United States of America; Center for Translational Research, Feinstein Institute for Medical Research, Manhasset, New York, United States of America.
PLoS One. 2015 Mar 17;10(3):e0120225. doi: 10.1371/journal.pone.0120225. eCollection 2015.
Cutaneous wound continues to cause significant morbidity and mortality in the setting of diseases such as diabetes and cardiovascular diseases. Despite advances in wound care management, there is still an unmet medical need exists for efficient therapy for cutaneous wound. Combined treatment of adrenomedullin (AM) and its binding protein-1 (AMBP-1) is protective in various disease conditions. To examine the effect of the combination treatment of AM and AMBP-1 on cutaneous wound healing, full-thickness 2.0-cm diameter circular excision wounds were surgically created on the dorsum of rats, saline (vehicle) or AM/AMBP-1 (96/320 μg kg BW) was topically applied to the wound daily and wound size measured. At days 3, 7, and 14, skin samples were collected from the wound sites. AM/AMBP-1 treated group had significantly smaller wound surface area than the vehicle group over the 14-day time course. At day 3, AM/AMBP-1 promoted neutrophil infiltration (MPO), increased cytokine levels (IL-6 and TNF-α), angiogenesis (CD31, VEGF and TGFβ-1) and cell proliferation (Ki67). By day 7 and 14, AM/AMBP-1 treatment decreased MPO, followed by a rapid resolution of inflammation characterized by a decrease in cytokines. At the matured stage, AM/AMBP-1 treatment increased the alpha smooth muscle actin expression (mature blood vessels) and Masson-Trichrome staining (collagen deposition) along the granulation area, and increased MMP-9 and decreased MMP-2 mRNA expressions. TGFβ-1 mRNA levels in AM/AMBP-1 group were 5.3 times lower than those in the vehicle group. AM/AMBP-1 accelerated wound healing by promoting angiogenesis, collagen deposition and remodeling. Treatment also shortened the days to reach plateau for wound closure. Thus, AM/AMBP-1 may be further developed as a therapeutic for cutaneous wound healing.
在糖尿病和心血管疾病等疾病背景下,皮肤伤口持续导致显著的发病率和死亡率。尽管伤口护理管理取得了进展,但对于皮肤伤口的有效治疗仍存在未满足的医疗需求。肾上腺髓质素(AM)及其结合蛋白-1(AMBP-1)的联合治疗在各种疾病状态下具有保护作用。为了研究AM和AMBP-1联合治疗对皮肤伤口愈合的影响,在大鼠背部手术创建直径2.0厘米的全层圆形切除伤口,每天在伤口局部应用生理盐水(载体)或AM/AMBP-1(96/320μg kg体重),并测量伤口大小。在第3天、第7天和第14天,从伤口部位采集皮肤样本。在14天的时间过程中,AM/AMBP-1治疗组的伤口表面积明显小于载体组。在第3天,AM/AMBP-1促进中性粒细胞浸润(MPO),增加细胞因子水平(IL-6和TNF-α)、血管生成(CD31、VEGF和TGFβ-1)和细胞增殖(Ki67)。到第7天和第14天,AM/AMBP-1治疗降低了MPO,随后炎症迅速消退,其特征是细胞因子减少。在成熟阶段,AM/AMBP-1治疗增加了肉芽区域的α平滑肌肌动蛋白表达(成熟血管)和Masson三色染色(胶原沉积),并增加了MMP-9的表达,降低了MMP-2的mRNA表达。AM/AMBP-1组的TGFβ-1 mRNA水平比载体组低5.3倍。AM/AMBP-1通过促进血管生成、胶原沉积和重塑加速伤口愈合。治疗还缩短了伤口闭合达到平台期的天数。因此,AM/AMBP-1可能会进一步开发成为一种治疗皮肤伤口愈合的药物。