耳部瘢痕疙瘩的臨床療效分析及相關(guān)細(xì)胞因子表達(dá)的研究
發(fā)布時(shí)間:2019-07-06 19:34
【摘要】:耳部瘢痕疙瘩主要由穿耳洞感染或外傷(包括手術(shù))引起,臨床表現(xiàn)為外耳局部瘤樣進(jìn)行性增生并伴不同程度的畸形,病理特征表現(xiàn)為大量成纖維細(xì)胞異常增殖和細(xì)胞外基質(zhì)尤其是膠原蛋白過量沉積。本病發(fā)病率高,但治療卻十分棘手,既要徹底以防殘留復(fù)發(fā),又要兼顧耳外形,,據(jù)報(bào)道,單純手術(shù)后復(fù)發(fā)率高達(dá)45%~100%,許多患者因反復(fù)復(fù)發(fā)終致耳廓變形毀損,已成為耳鼻咽喉科、整形外科及皮膚科的一大難題。 對于本病的研究,目前主要存在兩個(gè)方面的問題:一方面,臨床治療方法雖較多,如手術(shù)、局部激素注射、激光、冷凍、放射治療等,但療效不一,即使采取綜合治療,也有相當(dāng)比例的復(fù)發(fā)率,至今尚無統(tǒng)一的治療方案,迫切需要開展多中心、大樣本的治療對比研究;另一方面,耳部瘢痕疙瘩的發(fā)病機(jī)制仍不清楚,這也是制約其治療的一大瓶頸,研究耳部瘢痕疙瘩的發(fā)生演變機(jī)制,對于探索積極有效的防治方法將具有重要意義。鑒于此,我們設(shè)計(jì)了本課題。 研究分兩個(gè)部分進(jìn)行,第一部分研究中,我們回顧性總結(jié)分析了手術(shù)切除加術(shù)后放療對39例耳部瘢痕疙瘩的治療效果,研究發(fā)現(xiàn),治療結(jié)束后1年,總有效率為89.7%,有4耳復(fù)發(fā),復(fù)發(fā)率10.3%;至目前已平均隨訪37.3月,有11耳復(fù)發(fā),復(fù)發(fā)率28.2%,復(fù)發(fā)的平均發(fā)生時(shí)間為19.7月。研究表明,手術(shù)切除加術(shù)后放療對耳部瘢痕疙瘩的近期治療效果令人滿意,但其遠(yuǎn)期療效不容樂觀;對耳部瘢痕疙瘩的隨訪時(shí)間應(yīng)至少在2年以上;加強(qiáng)基礎(chǔ)研究,努力闡明瘢痕疙瘩的發(fā)生、發(fā)展機(jī)制,探尋更為徹底有效的治療方法勢在必行。 第二部分研究中,我們借鑒單核細(xì)胞趨化蛋白-1(MCP-1)和骨形成蛋白-7(BMP-7)在肝、腎、肺等纖維性變中的研究思路,試圖通過觀察耳部瘢痕疙瘩中MCP-1和BMP-7的表達(dá)情況及相關(guān)關(guān)系,探討其發(fā)生發(fā)展機(jī)制,為下一步應(yīng)用rh BMP-7進(jìn)行基因治療做前期探索性工作。研究采用免疫組織化學(xué)方法,檢測了MCP-1和BMP-7在39例耳部瘢痕疙瘩、20例耳部非病理性瘢痕和20例正常耳部皮膚組織中的表達(dá)水平,并對耳部瘢痕疙瘩組織中MCP-1和BMP-7的表達(dá)情況進(jìn)行了相關(guān)性分析,結(jié)果發(fā)現(xiàn),與耳部非病理性瘢痕和正常皮膚組織相比,MCP-1在耳部瘢痕疙瘩組織中表達(dá)呈顯著性上調(diào)(P<0.01),而BMP-7的表達(dá)呈顯著性下調(diào)(P<0.01),兩者呈顯著性負(fù)相關(guān)(r=-0.54,P<0.01)。結(jié)果表明,MCP-1的過度表達(dá)和BMP-7的表達(dá)下調(diào)共同促進(jìn)了耳部瘢痕疙瘩的纖維化病理過程;BMP-7是一個(gè)極有前途的基因治療靶點(diǎn)。
文內(nèi)圖片:
圖片說明:左耳輪瘢痕疙瘩
[Abstract]:Keloid is mainly caused by ear hole infection or trauma (including surgery). The clinical manifestations are progressive hyperplasia of external ear tumor with different degrees of malformations. The pathological features are abnormal proliferation of a large number of fibroblasts and excessive deposition of extracellular matrix, especially collagen. The incidence of this disease is high, but the treatment is very difficult, not only to prevent residual recurrence, but also to take into account the shape of the ear. It is reported that the recurrence rate after simple operation is as high as 45% 鈮
本文編號:2511274
文內(nèi)圖片:
圖片說明:左耳輪瘢痕疙瘩
[Abstract]:Keloid is mainly caused by ear hole infection or trauma (including surgery). The clinical manifestations are progressive hyperplasia of external ear tumor with different degrees of malformations. The pathological features are abnormal proliferation of a large number of fibroblasts and excessive deposition of extracellular matrix, especially collagen. The incidence of this disease is high, but the treatment is very difficult, not only to prevent residual recurrence, but also to take into account the shape of the ear. It is reported that the recurrence rate after simple operation is as high as 45% 鈮
本文編號:2511274
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