Effect of uncultured adipose-derived stromal vascular fraction on preventing urethral stricture formation in rats.

Effect of uncultured adipose-derived stromal vascular fraction on preventing urethral stricture formation in rats.
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DOI:
10.1038/s41598-022-07472-1
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发表时间:
2022-03-04
期刊:
影响因子:
4.6
通讯作者:
Jia R
Jia R
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Zhou L;Yang T;Zhao F;Song K;Xu L;Xu Z;Zhou C;Qin Z;Xu Z;Wu R;Xu H;Jia R

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由于高复发率,尿道狭窄(US)仍然是一种具有挑战性的疾病,没有有效的治疗方案。本研究旨在评估未培养的脂肪源性基质血管成分(SVF)对美国大鼠模型尿道纤维化的预防作用。结果表明,与假手术大鼠相比,美国大鼠表现出高回声的尿道壁,管腔变窄,而 SVF 大鼠表现出较不广泛的尿道变化。从组织学上看,US大鼠尿道标本有明显的粘膜下纤维化,而SVF大鼠则表现出轻度粘膜下纤维化,组织改变较少。此外,美国大鼠显示 I 型胶原蛋白(2.0±±0.2、2.2±±0.2,所有均针对 GAPDH 标准化,包括以下)、III 型胶原蛋白(2.5±±0.3、1.2±±0.1)和 TGFβ1R(2.8±±0.3, 1.9±±0.2),而SVF细胞给药导致胶原蛋白I(1.6±±0.2、1.6±±0.2)、胶原III(1.8±±0.4、0.9±±0.1)和TGFβ1R(1.8±±0.3)的基因和蛋白质表达下降。 1.3±0.2),同时血管化得到改善,VEGF(1.7±0.1)和bFGF(3.1±0.3)表达增加。此外,SVF 通过调节炎症细胞因子和细胞以及巨噬细胞表型的转变发挥抗炎作用。我们的研究结果表明,未培养的 SVF 对尿道纤维化早期的狭窄形成具有抑制作用。
Urethral stricture (US) remains a challenging disease without effective treatment options due to the high recurrence rate. This study aims to evaluate the preventive effect of uncultured adipose derived stromal vascular fraction (SVF) on urethral fibrosis in a rat model of US. Results demonstrated that US rats displayed hyperechogenic urethral wall with a narrowed lumen compared with sham rats, while SVF rats exhibited less extensive urethral changes. By histology, US rats showed obvious submucosal fibrosis in the urethral specimens, while SVF rats exhibited mild submucosal fibrosis with less extensive tissue changes. Furthermore, US rats showed increased gene and protein expression of collagen I (2.0 ± 0.2, 2.2 ± 0.2, all were normalized against GAPDH, including the following), collagen III (2.5 ± 0.3, 1.2 ± 0.1), and TGFβ1R (2.8 ± 0.3, 1.9 ± 0.2), while SVF cells administration contributed to decreased gene and protein expression of collagen I (1.6 ± 0.2, 1.6 ± 0.2), collagen III (1.8 ± 0.4, 0.9 ± 0.1), and TGFβ1R (1.8 ± 0.3, 1.3 ± 0.2), in parallel with the improvement of vascularization and increased expression of VEGF (1.7 ± 0.1) and bFGF (3.1 ± 0.3). Additionally, SVF served anti-inflammatory effect through regulation of inflammatory cytokines and cells, accompanied with conversion of the macrophage phenotype. Our findings suggested that uncultured SVF presented an inhibitory effect on stricture formation at an early stage of urethral fibrosis.
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发表时间: 2001-06-01
期刊: JOURNAL OF UROLOGY
影响因子: 6.6
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期刊: EUROPEAN UROLOGY
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