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聚焦不良低能量冲击波预处理脂肪组织源性干细胞治疗糖尿病膀胱功能障碍的一种有前途的治疗选择

A promising therapeutic option for diabetic bladder dysfunction: Adipose tissue-derived stem cells pretreated by defocused low-energy shock wave.

机构信息

School of Basic Medical Sciences, Shandong University, Jinan, China.

Department of Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.

出版信息

J Tissue Eng Regen Med. 2019 Jun;13(6):986-996. doi: 10.1002/term.2844. Epub 2019 Apr 9.

Abstract

Adipose tissue-derived stem cells (ADSCs) have shown effectiveness in treating diabetic bladder dysfunction (DBD). In the present study, ADSCs pretreated by defocused low-energy shock wave (DLSW) were first used to achieve better therapeutic effect. ADSCs were treated by DLSW prior to each passage. Secretions of vascular endothelial growth factor (VEGF) and nerve growth factor (NGF) were tested. Proliferation ability was examined by staining 5-ethynyl-2-deoxyuridine (EdU) and assessing expressions of proliferating cell nuclear antigen (PCNA) and Ki67. DBD rat model was created and subgrouped via therapeutic options of phosphate-buffered saline, ADSCs, pretreated ADSCs, and ADSCs lysate. Afterward, voiding functions were evaluated, and tissues were examined by histology. Neonatal rats received intraperitoneal injection of EdU. All rats were subgrouped and treated as narrated above. Bladder tissues were stained with EdU, Stro-1, and CD34. Results showed that shocked ADSCs were activated by secreting more VEGF and NGF, by higher EdU-retaining cells ratios, and by higher expressions of PCNA and Ki67 compared with unshocked ADSCs. Shocked ADSCs had the most effective efficacy in treating DBD by secreting the most VEGF and NGF to accelerate regenerations of revascularization and innervation. Migrations of EdU Stro-1 CD34 endogenous stem cells to bladders were enhanced by injecting ADSCs. In conclusion, ADSCs pretreated by DLSW had potent therapeutic effect in treating DBD by secreting VEGF and NGF. Recruitment of endogenous stem cells was considered as an important mechanism in this regenerative process.

摘要

脂肪组织源性干细胞(ADSCs)已被证明在治疗糖尿病膀胱功能障碍(DBD)方面具有有效性。在本研究中,首先使用经离焦低强度冲击波(DLSW)预处理的 ADSCs 以实现更好的治疗效果。在每次传代前,对 ADSCs 进行 DLSW 处理。测试了血管内皮生长因子(VEGF)和神经生长因子(NGF)的分泌情况。通过 5-乙炔基-2-脱氧尿苷(EdU)染色和评估增殖细胞核抗原(PCNA)和 Ki67 的表达来检测增殖能力。创建 DBD 大鼠模型,并通过磷酸盐缓冲盐水、ADSCs、预处理 ADSCs 和 ADSCs 裂解物的治疗选择进行亚组化。随后,评估排尿功能,并通过组织学检查组织。对新生大鼠进行腹腔内注射 EdU。所有大鼠均按上述方法进行分组和治疗。对膀胱组织进行 EdU、Stro-1 和 CD34 染色。结果表明,与未受冲击的 ADSCs 相比,受冲击的 ADSCs 通过分泌更多的 VEGF 和 NGF、具有更高的 EdU 保留细胞比例以及更高的 PCNA 和 Ki67 表达而被激活。受冲击的 ADSCs 通过分泌最多的 VEGF 和 NGF 来加速血管再生和神经支配的恢复,从而在治疗 DBD 方面具有最有效的疗效。通过注射 ADSCs 增强了 EdU-Stro-1-CD34 内源性干细胞向膀胱的迁移。总之,经 DLSW 预处理的 ADSCs 通过分泌 VEGF 和 NGF 对 DBD 具有强大的治疗作用。募集内源性干细胞被认为是这一再生过程中的一个重要机制。

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