壮筋续骨汤对骨折大鼠血清bFGF和TGFβ1水平的影响和意义

目的：研究壮筋续骨汤对大鼠股骨骨折后血清碱性成纤维细胞因子（bFGF）和转化生长因子（TGFβ1）水平以及骨折愈合的影响。方法成年健康雄性Wistar大鼠72只，应用电锯在股骨中段切断股骨制备骨折动物模型，壮筋续骨汤水煎液灌胃干预治疗。大体解剖观察骨折局部的愈合情况，组织病理学观察骨痂结构，酶联免疫吸附试验检测血清bFGF和TGFβ1水平。结果解剖观察发现，骨折后7d骨折断端主要为肉芽组织，14d为纤维性骨痂，21d可见骨性骨痂，模型组与治疗组未见显著差异，28d治疗组骨痂重塑质量明显优于模型组。大鼠血清bFGF和TGFβ1水平，模型组与治疗组在骨折后7、14、21d无显著差异，在28d治疗组明显高于模型组。结论壮筋续骨汤可能在骨折愈合后期通过维持血清bFGF和TGFβ1的水平、增强其活性、减缓其降解而促进骨折愈合。     

膀胱移行细胞癌中VEGF、bFGF及其受体的表达和临床意义

目的 探讨VEGF、bFGF及其受体在膀胱移行细胞癌中的表达和临床意义。方法 应用免疫组织化学SABC法研究65例膀胱浅表性与浸润性移行细胞癌VEGF及其受体flk,flt,bFGF及其受体flg的表达。结果 浸润性癌组VEGF及其受体、bFGF及其受体的表达显著高于非浸润性癌组（P＜0．01）。浅表性癌组中5例复发病例5项指标均呈阳性或强阳性表达。结论 5项指标的共同表达与癌组织浸润能力密切相关。浅表性膀胱移行细胞癌中VEGF及其受体、bFGF及其受体的共同表达或高表达可作为判断肿瘤早期浸润及复发倾向的参考指标。     

碱性成纤维细胞生长因子复合天然型无机骨修复兔下颌骨缺损的形态计量研究

观察了碱性成纤维细胞生长因子(bFGF)复合天然型无机骨(N.N.B)与单纯天然型无机骨对骨生长的促进作用.在人工兔下颌骨缺损部位置放3组不同的骨组织,17实验单位置入N.N.B,17实验单位置入bFGF+N.N.B,9实验单位置入自体骨,分别于3周、6周、12周观察不同组别单位面积内的成骨面积、血管密度(MVD)、间质细胞增殖指数(PCNA增殖指数).结果发现bFGF+N.N.B组成骨时间早,成骨面积多,血管增生明显,PCNA增殖指数高,与N.N.B组有明显差异(p<0.001),与自体骨组基本接近(p>0.05).可见,bFGF可促进新骨在无机骨中的生长,可作为临床的一种较为理想的复合型人工植骨材料.     

bFGF和VEGF在甲状腺癌微小癌中的表达及意义

目的探讨碱性成纤维细胞生长因子（basic fibroblast growth factor,bFGF）和血管内皮生长因子（Vascular epithelial growthfactor,VEGF）在甲状腺微小癌中的表达及意义。方法用免疫组织化学S-P方法检测34例甲状腺微小癌、30例甲状腺分化型乳头状癌和20例甲状腺腺瘤性增生中bFGF和VEGF的表达情况,并进行比较。结果 bFGF和VEGF表达阳性率在甲状腺微小癌、分化型乳头状癌和腺瘤性增生中分别是70%、50%、15%和75%、50%、、5%,癌旁正常甲状腺组织阴性。经两两比较,甲状腺微小癌和分化型乳头状癌中bFGF和VEGF的表达无统计学差异,与癌旁甲状腺组织和甲状腺腺瘤性增生有显著差异。结论检测甲状腺微小癌组织中VEGF、bFGF的表达可作为临床辅助诊断、评价甲状腺乳头状癌生物学行为的参考指标,甲状腺微小癌和分化型乳头状癌一样有恶性行为及局部淋巴结转移的倾向。     

bFGF治疗颌面颈部大面积软组织缺损

目的探讨重组牛碱性成纤维细胞生长因子（bFGF）在颌面颈部大面积软组织缺损患者治疗中对组织愈合及预防瘢痕形成的作用,为细胞因子在创伤修复的临床应用提供依据。方法通过对三例较典形病例使用重组牛碱性成纤维细胞生长因子（贝复济）治疗：一例为恶性肿瘤术后皮瓣坏死,一例为斜方肌皮瓣术区拆线后裂开,一例为严重狗咬伤伴感染的患者,创面均缺损面积较大、深度深。持续观察创面变化至创面完全愈合。结果三例患者创面均愈合良好,且无瘢痕增生及瘢痕疙瘩形成。结论重组牛碱性成纤维细胞生长因子（bFGF）对颌面颈部大面积软组织缺损,甚至是创面条件较差的情况下,也可起到良好的治疗作用,并且可有效的抑制瘢痕组织形成,细胞因子在创伤修复及预防瘢痕形成中有积极作用。     

推拿手法对卫星细胞和生肌调节因子影响机制的研究进展

肌卫星细胞是具有增殖和分化能力的干细胞,在骨骼肌损伤后可以激活生成成肌细胞,进而分化为肌细胞。在调节卫星细胞增殖的内源性因子中,MyoD、IGF-l及bFGF是参与肌肉发生过程分子调控、启动和维持骨骼肌细胞生长发育的重要基因。而推拿手法可使卫星细胞大量增殖,生肌调控因子的表达增加,从而促进骨骼肌损伤修复。     

银杏提取液对随意皮瓣bFGF表达的影响

目的研究银杏提取液能否通过刺激随意皮瓣碱性成纤维细胞生长因子(bFGF)的表达来促进皮瓣的成活。方法取健康SD大鼠24只分为2组,构建大鼠背部缺血随意皮瓣,实验组大鼠每天ip银杏提取液100 mg/kg,对照组大鼠每天ip等量生理盐水。术后7 d通过大体观察皮瓣成活,血管造影术观察皮瓣血管显影程度,HE染色观察皮瓣病理改变情况,免疫组化法检测bFGF的表达情况。结果实验组皮瓣的存活率为(67.07±2.66)%,明显高于对照组皮瓣的存活率(48.64±2.09)%(P<0.01)。实验组皮瓣远端的血管显影程度、bFGF的表达均高于对照组(P<0.01)。结论银杏提取液能通过刺激bFGF的表达来促进局部血管形成,从而在大体上促进高皮瓣的成活。     

GDF‐5/7 and bFGF activate integrin α2‐mediated cellular migration in rabbit ligament fibroblasts

Cellular activities responding to growth factors are important in ligament healing. The anterior cruciate ligament (ACL) has poor healing potential compared to the medial collateral ligament (MCL). To assess the differences, we investigated the proliferation, migration, adhesion, and matrix synthesis responding to growth factors in rabbit ACL and MCL fibroblasts. ACL cell proliferation to basic fibroblast growth factor (bFGF), bone morphogenetic protein‐2, growth and differentiation factor (GDF)‐5, and GDF‐7 treatment was similar to that of MCL cells. GDF‐5 enhanced Col1a1 expression in ACL and MCL fibroblasts up to 4.7‐ and 17‐fold levels of control, respectively. MCL fibroblasts showed stronger migration activities in response to bFGF and GDF‐5 than ACL cells. GDF‐5/7 and bFGF also changed the stress fiber formation and cellular adhesion by modulating the distribution of integrin α2. Functional blocking analyses using anti‐integrin α2 antibodies revealed that cellular migration responding to growth factors depended on the integrin α2‐mediated adhesion on type I collagen. The expression of integrin α2 was also increased by growth factors in both cells. Our results demonstrate that GDF‐5/7 and bFGF stimulate cellular migration by modulating integrin α2 expression and integrin α2‐dependent adhesion, especially in MCL fibroblasts. These findings suggest that the different healing potential between ACL and MCL may be caused by different cellular behavior in the integrin α2‐mediated cellular migration in response to growth factors. © 2009 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 28:225–231, 2010     

Expression of bFGF/FGFR-1 and vascular proliferation related to clinicopathologic features and tumor progress in localized prostate cancer

Microvessel density (MVD) has been associated with progression of prostate cancer. Although basic fibroblast growth factor (bFGF) is a known endothelial mitogen, the prognostic role of bFGF and its receptor FGFR-1 in prostate cancer has been controversial. The aim of our study was to examine the tissue distribution and prognostic significance of bFGF, FGFR-1, and microvascular proliferation. Sections from 104 radical prostatectomy specimens were examined by factor VIII/Ki-67 staining for proliferating capillary index (PCI) and MVD, and tissue microarray sections were immunostained for bFGF and FGFR-1. Increased PCI (median 0.49%) was related to strong stromal expression of bFGF (P=0.003) but was without prognostic impact. Strong bFGF staining was associated with well-differentiated tumors, no capsular penetration, low serum-prostate-specific antigen (s-PSA), low tumor cell proliferation, and increased time to biochemical failure (P=0.007), and was of independent prognostic importance in multivariate survival analysis. bFGF expression in vessels was associated with low MVD (P=0.0003). In contrast, strong tumor cell FGFR-1 expression was related to high preoperative s-PSA. Thus, increased stromal and vessel bFGF was associated with less aggressive tumors. Our findings indicate a complex relationship between bFGF/FGFR-1 expression and prognosis of prostate cancer. Vascular proliferation revealed no prognostic impact in this study.