收稿日期: 2025-02-11
网络出版日期: 2025-05-21
基金资助
山东省自然科学基金项目(ZR2023MH056)
Establishment of animal models of rat abdominal wall with implantation of polypropylene mesh and mersilene tape and comparative study on their biomechanical properties and histocompatibility
Received date: 2025-02-11
Online published: 2025-05-21
目的 将Gynemesh聚丙烯网片和Mersilene 带植入固定于大鼠腹壁建立动物模型,分别于植入后30 d和植入后90 d进行力学实验和腹壁组织HE染色,评价两种网片的生物力学特性和组织相容性。 方法 将Gynemesh网片和Mersilene带裁剪后使用W6977M聚酯不可吸收缝合线和V-Loc可吸收缝合线植入同一只雌性成年大鼠腹壁(n = 10)。根据实验时间不同将大鼠随机分为30 d组和90 d组(n = 5),在不同时间点进行力学实验,测试网片从腹壁撕脱的极限载荷,实验后取网片周围组织进行HE染色,对组织的炎症反应、新生血管形成、成纤维细胞增殖情况进行评分,比较不同网片的组织相容性。 结果 (1)30 d组中,Gynemesh + 6977组的极限载荷为(14.96 ± 2.22) N;Gynemesh + V-Loc组为(12.73 ± 1.11) N;Mersilene + 6977组为(10.65 ± 0.91)N;Mersilene + V-Loc组为(8.70 ± 1.18)N。除Gynemesh + 6977组与Gynemesh + V-Loc组的极限载荷差异无统计学意义(P = 0.12)外,其余各组间比较差异均有统计学意义(P < 0.05);(2)90 d组中,Gynemesh + 6977组的极限载荷为(18.97 ± 0.59)N;Gynemesh + V-Loc组为(18.18 ± 0.54)N;Mersilene + 6977组为(13.87 ± 0.67)N;Mersilene + V-Loc组为(10.41 ± 0.73)N,Gynemesh + 6977组与Gynemesh + V-Loc组的极限载荷差异无统计学意义(P = 0.06),其余各组间比较差异均有统计学意义(P < 0.05);(3)各组90 d的极限载荷均> 30 d组,且各组间比较差异均有统计学意义(P < 0.05);(4)30 d组中Gynemesh网片比Mersilene带炎症反应低(2.0 ± 0.69 vs. 3.10 ± 0.71,P < 0.05),新生血管和成纤维细胞增殖差异无统计学意义(2.37 ± 0.61 vs. 2.40 ± 0.62,P = 0.84;2.43 ± 0.73 vs. 2.63 ± 0.67,P = 0.27)。90 d组中Gynemesh网片与Mersilene带相比炎症反应评分低(1.10 ± 0.66 vs. 2.00 ± 0.74,P < 0.05),成纤维细胞增殖更少(2.87 ± 0.68 vs. 3.27 ± 0.67,P < 0.05),新生血管增殖无明显差异(2.20 ± 0.55 vs. 2.13 ± 0.68,P = 0.68);(5)两种网片30 d组的炎症反应均高于90 d组(Gynemesh组 2.0 ± 0.69 vs. 1.10 ± 0.66,P < 0.05;Mersilene组 3.13 ± 0.73 vs. 2.0 ± 0.74,P < 0.05),成纤维细胞增殖程度更低(Gynemesh组2.43 ± 0.73 vs. 2.87 ± 0.68,P < 0.05;Mersilene组2.63 ± 0.67 vs. 3.27 ± 0.69,P < 0.05),新生血管的增殖无统计学意义(Gynemesh组 2.53 ± 0.74 vs. 2.47 ± 0.74,P = 0.81;Mersilene组 2.40 ± 0.62 vs. 2.13 ± 0.68,P = 0.12)。 结论 Gynemesh聚丙烯网片与Mersilene带相比,具有更强的抗张力强度和更好的生物相容性。
关键词: Gynemesh聚丙烯网片; Mersilene带; 组织相容性; 生物力学; 大鼠模型
高君琳 , 殷广洁 , 蒙超 , 修春蕾 , 黄利英 , 田甜 . 聚丙烯网片和Mersilene带植入大鼠腹壁动物模型的构建以及生物力学特性和组织相容性的比较[J]. 实用医学杂志, 2025 , 41(10) : 1496 -1501 . DOI: 10.3969/j.issn.1006-5725.2025.10.010
Objective To establish animal models by implanting Gynemesh polypropylene mesh and Mersilene tape into the abdominal walls of rats, followed by conducting mechanical experiments and performing HE staining on abdominal wall tissues at 30 and 90 days post-implantation, respectively, in order to evaluate the biomechanical properties and histocompatibility of the two types of meshes. Methods The Gynemesh mesh and Mersilene tape were implanted into the abdominal wall of adult female rats (n = 10) using W6977M polyester non-absorbable sutures and V-Loc absorbable sutures. The rats were randomly assigned to either a 30-day group or a 90-day group (n = 5 per group) based on different experimental time points. Mechanical tests were conducted at these time points to evaluate the ultimate load required for avulsion of the meshes from the abdominal wall. Following the mechanical experiments, the tissues surrounding the meshes were harvested for hematoxylin and eosin (HE) staining. The inflammatory response, neovascularization, and fibroblast proliferation in the tissues were scored to compare the histocompatibility of the two types of meshes. Results (1) In the 30-day group, the ultimate load values were as follows: Gynemesh + 6977 (14.96 ± 2.22)N, Gynemesh + V-Loc (12.73 ± 1.11)N, Mersilene + 6977 (10.65 ± 0.91)N, and Mersilene + V-Loc (8.70 ± 1.18)N. No statistically significant difference was observed in the ultimate load between the Gynemesh + 6977 and Gynemesh + V-Loc groups (P = 0.12), whereas statistically significant differences were noted among the other groups (P < 0.05). (2) In the 90-day group, the ultimate load values were as follows: Gynemesh + 6977 (18.97 ± 0.59)N, Gynemesh + V-Loc (18.18 ± 0.54)N, Mersilene + 6977 (13.87 ± 0.67)N, and Mersilene + V-Loc (10.41 ± 0.73)N. No statistically significant difference was observed in the ultimate load between the Gynemesh + 6977 and Gynemesh + V-Loc groups (P = 0.06), while statistically significant differences were noted among the other groups (P < 0.05). (3) The ultimate load at 90 days for each group was significantly greater than that at 30 days, with statistically significant differences observed across all groups (P < 0.05). (4) In the 30-day group, Gynemesh exhibited a lower inflammatory response compared to Mersilene tape (2.0 ± 0.69 vs. 3.10 ± 0.71, P < 0.05), with no statistically significant differences in neovascularization or fibroblast proliferation (2.37 ± 0.61 vs. 2.40 ± 0.62, P = 0.84; 2.43 ± 0.73 vs. 2.63 ± 0.67, P = 0.27). In the 90-day group, Gynemesh demonstrated a lower inflammatory response score (1.10 ± 0.66 vs. 2.00 ± 0.74, P < 0.05), reduced fibroblast proliferation (2.87 ± 0.68 vs. 3.27 ± 0.67, P < 0.05), and no significant difference in neovascular proliferation (2.20 ± 0.55 vs. 2.13 ± 0.68, P = 0.68) compared to Mersilene tape. (5) The inflammatory response for both mesh types was higher in the 30-day group compared to the 90-day group (Gynemesh group: 2.0 ± 0.69 vs. 1.10 ± 0.66, P < 0.05; Mersilene group: 3.13 ± 0.73 vs. 2.0 ± 0.74, P < 0.05). Additionally, the degree of fibroblast proliferation was lower in the 30-day group than in the 90-day group (Gynemesh group: 2.43 ± 0.73 vs. 2.87 ± 0.68, P < 0.05; Mersilene group: 2.63 ± 0.67 vs. 3.27 ± 0.69, P < 0.05). However, there was no statistically significant difference in neovascularization proliferation between the two groups (Gynemesh group: 2.53 ± 0.74 vs. 2.47 ± 0.74, P = 0.81; Mersilene group: 2.40 ± 0.62 vs. 2.13 ± 0.68, P = 0.12). Conclusion Compared with Mersilene tape, Gynemesh polypropylene mesh exhibits superior tensile strength and enhanced biocompatibility.
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