Effects of gentiana scabra bage on expression of hepatic type Ⅰ,Ⅲ collagen proteins in Paragonimus skrjabini rats with liver fibrosis

Objective:To exploit- the effects of gentiana scabra bage on the expression of hepatic collagen proteins in Paragonimus skrjabini rats with liver fibrosis.Methods:Immunohistochemical technique was used to observe the changes of content of hepatic type Ⅰ,Ⅲ collagen proteins in Paragonimus skrjabini rats with Liver fibrosis before and after the gentiana scabra bage treatmeat.Results:Comparing with the model group,changes of hepatic tvpe Ⅰ and type Ⅲ collagen proteins in gentiana scabra bage treated group were significantly weakened.Conclusions:Gentiana scabra bage treatment can reduce the content of hepatic type Ⅲ and type Ⅰ collagen protein significantly in Paragonimus skrjabini rats with liver fibrosis,thereby,playing the role against hepatic fibrosis.

基于上皮细胞-间充质细胞转分化(EMT)理论的艾灸配合化纤Ⅳ号方对实验大鼠Collagen Type Ⅲ和PDGF干预作用实验研究

目的:基于上皮细胞-间充质细胞转分化(EMT)学说观察化纤Ⅳ号方、艾灸以及二者相配合治疗肺纤维化大鼠Collagen TypeⅢ(Ⅲ-C)和PDGF的变化,探讨其治疗效应及生物学机制。方法:将鼠龄约为6周的SD大鼠随机分为空白组、模型组、化纤Ⅳ号方组、艾灸组、化纤Ⅳ号方与艾灸配合治疗组(简称为"灸药组"),治疗30 d后处死观察其肺组织病理改变,并检测其Collagen TypeⅢ、PDGF的基因和蛋白表达情况。结果:实时荧光定量结果显示:与空白组相比,各组Ⅲ-C和PDGF m RNA表达增高(P<0.05)。与模型组相比,各组的Ⅲ-C和PDGF m RNA表达有明显降低(P<0.01)。而各组中,灸药组疗效最明显,Ⅲ-C和PDGF的表达最低。蛋白免疫印迹法检测结果显示:与模型组相比各组的Ⅲ-C蛋白表达有差异。结论:1艾灸、化纤Ⅳ号方均可减轻博莱霉素诱导肺纤维化大鼠的肺纤维化程度。2艾灸配合化纤Ⅳ号方可减轻博莱霉素诱导肺纤维化大鼠的肺纤维化程度,且其效果优于单用艾灸或单用化纤Ⅳ号方。3艾灸、化纤Ⅳ号方及其二者配合使用不同程度阻抑博莱霉素诱导肺纤维化大鼠肺纤维化进程的效应机制,可能与通过调控其EMT过程中的Ⅲ-C和PDGF表达环节紧密相关。

绝经后盆底组织TGF-β_1和CollagenⅠ、Ⅲ表达与SUI的关系

目的:探讨绝经后压力性尿失禁(SUI)患者盆底支持结构转化生长因子β1(TGF-β1)、胶原蛋白Ⅰ、Ⅲ(CollagenⅠ、Ⅲ)与SUI的关系。方法:采用免疫组化方法,测定30例压力性尿失禁患者(SUI组)、28例盆底器官膨出(POP)患者(POP组)阴道前壁组织中TGF-β1及Collagen阳性率,并选择同期30例非卵巢功能性肿瘤和宫颈病变患者作为对照(对照组)。结果:SUI组、POP组及对照组患者阴道前壁组织中,TGF-β1表达阳性率分别为20.00%、14.30%、93.33%,SUI组与对照组比较,差异有极显著性(P<0.01);SUI组与POP组比较,差异无显著性(P>0.05)。3组患者阴道前壁组织中胶原Ⅰ含量的表达以辉度值为标准,在SUI组、POP组及对照组分别为98.62、98.15和100.03。SUI组与对照组比较,差异有极显著性(P<0.01);POP组与对照组比较,差异有极显著性(P<0.01);SUI组与POP组比较,差异无显著性(P>0.05)。3组患者阴道前壁组织中胶原Ⅲ含量的表达以辉度值为标准,在SUI组、POP组及对照组分别为98.46、98.23和100.12。SUI组与对照组比较,差异有极显著性(P<0.01);POP组与对照组比较,差异有极显著性(P<0.01);SUI组与POP组比较,差异无显著性(P>0.05)。结论:绝经后SUI患者盆底支持结构的退行性病变与组织中的转化生长因子β1减少及胶原蛋白含量水平低下有关。

氧化苦参碱对皮肤创面愈合中PCNA、α-SMA及Type Ⅰ collagen的影响

目的探讨氧化苦参碱对小鼠皮肤创面愈合中血清增殖细胞核抗原(PCNA)、α-平滑肌肌动蛋白(α-SMA)及细胞Ⅰ型胶原蛋白(Type Ⅰ collagen)的影响。方法昆明小鼠背部手术制备1.5 cm×1.5 cm全层皮肤缺损创面模型。自第1 d始,除对照组给予等量生理盐水外,余各组分别按20、40、80 mg/kg给予氧化苦参碱。Van Gieson纤维胶原染色法观察小鼠背部皮肤创面组织胶原纤维的表达;免疫组学法评价创面组织中PCNA、α-SMA及Type Ⅰ collagen的表达。结果Van Gieson纤维胶原染色显示,氧化苦参碱可促进新生肉芽组织、毛细血管及新生纤维胶原生长。免疫组学研究显示,在第7 d时,氧化苦参碱20、40、80 mg/kg使小鼠皮肤创面组织中PCNA表达明显升高(P<0.05);在第9 d、11 d时,氧化苦参碱20 mg/kg使小鼠皮肤创面组织中α-SMA显著增加;氧化苦参碱20 mg/kg在第3 d、11 d,氧化苦参碱40 mg/kg在第3 d,氧化苦参碱80 mg/kg在第3 d、7 d引起Type Ⅰ collagen的表达显著升高(P<0.05)。结论氧化苦参碱能增加皮肤创面愈合中PCNA、α-SMA及Type Ⅰ collagen的表达。

微针导入重组Ⅲ型人源化胶原蛋白在皮肤屏障功能修复中的应用效果

目的探究微针导入重组Ⅲ型人源化胶原蛋白治疗因皮肤炎性衰老导致的皮肤屏障功能下降的有效性及安全性。方法选取2020年6月至2021年5月在本院接受面部皮肤治疗的30例患者作为研究对象,采用随机数字表法将其分为对照组(重组Ⅲ型人源化胶原蛋白)与治疗组(微针导入重组Ⅲ型人源化胶原蛋白),各15例。治疗后定期对患者进行随访,分别进行主观疗效评价及客观疗效评价。结果治疗后4、8、12周,治疗组的满意度显著高于对照组(P<0.05)。治疗后,治疗组的皮肤皱纹、纹理、红区、毛孔、弹性、皮肤经皮失水及皮肤含水量改善明显(P<0.05);对照组治疗后油脂改善明显(P<0.05)。治疗后12周,治疗组的总症状评分显著低于对照组(P<0.05)。结论微针导入重组Ⅲ型人源化胶原蛋白对皮肤修复有较好的疗效,可增强皮肤屏障功能,为改善皮肤屏障功能、治疗因皮肤屏障受损引起的炎性衰老提供了新选择。

葡甘露聚糖凝胶对宫颈炎大鼠CollagenⅠ、CollagenⅢ表达的影响

目的:探讨葡甘露聚糖凝胶对宫颈炎大鼠宫颈组织中Ⅰ型胶原蛋白(CollagenⅠ)、Ⅲ型胶原蛋白(CollagenⅢ)的调节作用。方法:采用苯酚胶浆进行阴道内注射建立宫颈炎模型,造模结束后进行局部给药治疗,将18只雌性SD大鼠造模后分为模型组、葡甘露聚糖凝胶高、中、低剂量组(1.2 g·kg-1、0.6 g·kg-1、0.3 g·kg-1)、复方甲硝唑阴道栓组(0.4 g·kg-1)、凝胶基质组各3只,另外3只作为空白组。阴道内灌注给药7天后,RT-PCR和Western blot法检测大鼠宫颈组织中CollagenⅠ、CollagenⅢmRNA及蛋白的表达。结果:RT-PCR法结果显示与空白组比较,模型组大鼠宫颈组织中CollagenⅠ、CollagenⅢmRNA的表达均明显降低(P﹤0.01);与模型组比较,葡甘露聚糖凝胶给药组大鼠宫颈组织中CollagenⅠ、CollagenⅢ的表达有不同程度的提高(P﹤0.01或P﹤0.05)。Western blotting法检测宫颈组织中CollagenⅠ、CollagenⅢ蛋白的表达:与空白组比较,模型组大鼠宫颈组织中CollagenⅠ、CollagenⅢ蛋白的表达均有所降低(P﹤0.01);与模型组比较,葡甘露聚糖凝胶给药组大鼠宫颈组织中CollagenⅠ、CollagenⅢ蛋白的表达有不同程度的提高(P﹤0.01或P﹤0.05)。结论:葡甘露聚糖凝胶对宫颈炎大鼠宫颈组织中CollagenⅠ、CollagenⅢ表达具有促进作用,从而促进宫颈黏膜的组织修复。

Serum hyaluronic acid, procollagen type Ⅲ and Ⅳ in histological diagnosis of liver fibrosis

OBJECTIVE: To assess the significance of serum hyaluronic acid (HA), proeollagen type Ⅲ (PCⅢ), collagen type Ⅳ (CⅣ) in the histological diagnosis of liver fibrosis. METHODS: The concentrations of serum HA, PCⅢ, CⅣ in 253 patients with chronic liver diseases were measured by radioimmunoassay. Liver biopsies were performed in all patients at the same time. The liver was pathologically evaluated by a pathologist according to a scoring system. Combined with the results of liver pathological diagnosis, the accuracy of serum HA, PCⅢ, CⅣ in diagnosing patients with hepatic fibrosis (staging≥S_2) or cirrhosis (S_4) was assessed using the receiver operating curve (ROC). RESULTS: The cutoff values of serum HA, PCⅢ and CⅣ for identifying patients with hepatic fibrosis (≥S_2) or cirrhosis (S_4) were determined. The cutoff values of serum HA, PCⅢ and CⅣ for detecting patients with fibrosis (stage≥S_2) were 90μg/L, 90μg/L, 75μg/L, respectively; their sensitivity (Se) was 80.4%, 82%, 63.1%; their specificity (Spe) was 70.2%, 60.8%, 83.8%; their positive predictive values (PPV) were 86.7%, 83.5%, 90.4%; their negative predictive values (NPV) were 59.8%, 58.4%, 48.4%, respectively. The cutoff values for detecting patients with liver cirrhosis were 210μg/L for HA, 96.2% for Se, 85.3% for Spe, 65.4% for PPV, 98.8% for NPV; 150μg/L for PCⅢ, 76.4% for Se, 68.7% for Spe, 40.4% for PPV, 91.3% for NPV; 90μg/L for CⅣ, 80% for Se, 75.8% for Spe, 47.8% for PPV, 93.2% for NPV, respectively. CONCLUSIONS: Serum HA, PCⅢ and CⅣ can be determined for an accurate diagnosis of hepatic fibrosis in various stages. HA is the best for screening liver cirrhosis.

温经汤加味对EM肾虚血瘀证大鼠局部微环境MMP-9、TNF-α、Collagen Ⅰ、Collagen Ⅲ的影响及其意义

目的探讨子宫内膜异位症(Endometosis,EM)肾虚血瘀证大鼠异位病灶局部MMP-9,TNF-α,CollagenⅠ、CollagenⅢ表达水平,以及温经汤加味对其干预作用及机制。方法SPF级雌性未孕健康SD大鼠设为空白组;构建肾虚血瘀证大鼠模型,造模成功后,设为假手术组(仅开腹);其余大鼠以自体内膜移植法构建EM肾虚血瘀证模型,造模成功后的大鼠分为模型组(不用药物干预)、阳性药(达那唑)组、温经汤加味组(低、中、高3种剂量)。阳性药对照组给予达那唑63 mg·kg^(-1)连续4周灌胃,中药低、中、高剂量组分别以5 g·kg^(-1)、10 g·kg^(-1)、20 g·kg^(-1)连续4周灌胃。取各组大鼠子宫内膜组织观察组织病理变化;免疫组化法(IHC)检测各组大鼠子宫内膜组织MMP-9,TNF-α的蛋白表达;蛋白免疫印迹法(WB)、实时荧光聚合酶链式反应法(RT-PCR)检测各组大鼠子宫内膜组织MMP-9、TNF-α、CollagenⅠ、CollagenⅢ基因表达。结果与空白组、假手术组比较,EM肾虚血瘀证模型组大鼠在位、异位内膜组织中MMP-9、TNF-α、CollagenⅠ、CollagenⅢ蛋白及其基因表达在模型组子宫内膜组织升高(P<0.01);与模型组比较,阳性药对照组、温经汤加味治疗组大鼠MMP-9、TNF-α、CollagenⅠ、CollagenⅢ蛋白及其基因表达水平均降低(P<0.01或P<0.05)。结论局部微环境免疫抑制微血管新生导致异位内膜侵袭是EM发生、发展过程中的重要病理表现,MMP-9、TNF-α、CollagenⅠ、CollagenⅢ过度表达可能促进了这一过程的发生、发展;温经汤加味通过"逆转"MMP-9、TNF-α、CollagenⅠ、CollagenⅢ等细胞因子异常升高,起到了解除局部微环境免疫抑制、阻断微血管新生的作用,在治疗EM肾虚血瘀证过程中表现出确切的疗效。

Effects of Icariin on Expression of OPN mRNA and Type ⅠCollagen in Rat Osteoblasts in Vitro

To study the effects of Icariin on expression of osteopontin （OPN） mRNA and type Ⅰ collagen in rat osteoblasts in vitro and to explore its possible mechanisms in preventing osteoporosis. OB was isolated from calvaria of new-born new-born fetal Sprague-Dawley （SD） rats by means of modified sequential collagenase digestion and incubated in MEM medium and the cell morphology was observed under inverted phase contrast microscope, OB was identified by alkaline phosphatase （ALP） staining. Different concentration （0.1μg/mL, 1.0 μg/mL, 10 μ/mL） of Icariin was added to the OB and incubated. The effect of Icariin on the proliferation and osteogenesis of OB was monitored by MTT analysis. The expression of type l collagen was estimated with immunohistochemistry techniques. The expression levels of mRNA of OPN in the cells in every group were examined by reverse-transcriptase ploymerase chain reaction （RT-PCR）. The expression of OPN mRNA and type Ⅰ collagen was strengthened gradually with the increase of Icariin concentration and peaked with 10 μg/mL Icariin on the 5th day. Icariin could significantly promote the expression of OPN mRNA and type Ⅰ collagen in rat osteoblasts in vitro. The levels of expression of OPN mRNA and type Ⅰ collagen were changed with different concentration of Icariin. Icariin could effectively prevent and treat osteoporosis and promote the bone formation.

CaMKⅡ抑制剂抑制AngⅡ或电场刺激诱导的心肌成纤维细胞TNF-α、TGF-β_1及collagenⅠ、Ⅲ的表达

目的:观察钙-钙调素依赖性蛋白激酶(CaMK)Ⅱ在血管紧张素Ⅱ(AngⅡ)或电场刺激(EFS)诱导的大鼠心肌成纤维细胞增殖、分泌细胞因子及胶原酶表达中的作用及其机制。方法:培养新生1-3 d乳鼠心肌成纤维细胞(3代),分为正常对照组(control)、0.1μmol/L AngⅡ组、0.1μmol/L AngⅡ+0.5μmol/L CaMKⅡ抑制剂KN92组、0.1μmol/L AngⅡ+0.5μmol/L CaMKⅡ抑制剂KN93组、0.1μmol/L AngⅡ+0.5μmol/L CaMKⅡ抑制剂AIP组;10 V1.0 Hz EFS组、10 V 1.0 Hz EFS+0.5μmol/L KN92组、10 V 1.0 Hz EFS+0.5μmol/L KN93组、10 V1.0 Hz EFS+0.5μmol/L AIP组、10 V1.0 Hz EFS+0.1μmol/L AngⅡ组。MTT法测定心肌成纤维细胞增殖;ELISA法测定细胞因子(TGF-β1,TNF-α)分泌;RT-PCR检测TGF-β1、TNF-α、collagenⅠ、ⅢmRNA水平。结果:CaMKⅡ抑制剂(0.5μmol/L KN93,0.5μmol/L AIP)能预防AngⅡ或EFS诱导的心肌成纤维细胞增殖;CaMKⅡ抑制剂(0.5μmol/L KN93,0.5μmol/L AIP)可预防AngⅡ或EFS引起的细胞培养上清液TGF-β1、TNF-α含量及相应mRNA表达增加。CaMKⅡ抑制剂(0.5μmol/L AIP,1.0μmol/L AIP)预防0.1μmol/L AngⅡ引起的collagenⅠ、Ⅲ表达增加。结论:抑制CaMKⅡ对AngⅡ或EFS诱导的心肌成纤维细胞增殖具有预防作用,其机制可能与CaMKⅡ抑制剂抑制TGF-β1、TNF-α以及胶原的表达有关。

加减乌梅丸颗粒对哮喘大鼠激素干预模型肺通气功能及Ⅰ、Ⅲ型胶原蛋白表达的影响

目的:观察加减乌梅丸颗粒对哮喘大鼠激素干预模型肺通气功能及Ⅰ、Ⅲ型胶原蛋白表达的影响。方法:将30只健康雄性SD大鼠随机分为正常组、哮喘组、激素组、阳性药组及中药组,除正常组以外,其余各组均采用卵蛋白致敏、雾化激发的方法建立哮喘大鼠模型;除正常组和哮喘组外其余各组均予地塞米松干预并逐步撤减,在此基础上阳性药组予普米克令舒雾化吸入,中药组予加减乌梅丸颗粒灌胃。用药7周后检测大鼠肺通气功能,HE染色观察大鼠肺组织病理形态学改变,Western blotting法检测大鼠肺组织CollagenⅠ、CollagenⅢ蛋白相对表达量,RT-qPCR法检测大鼠肺组织CollagenⅠmRNA、CollagenⅢmRNA相对表达量。结果:哮喘组大鼠用力肺活量(FVC)、0.2秒用力呼气容积(FEV_(0.2))、0.2秒内的平均流速(FEV_(0.2)/FVC%)、用力最大呼气流速(PEF)、用力中期呼气流速(FEF_(25%~75%))均显著低于正常组(P<0.05);激素组大鼠FVC、FEV_(0.2)、FEV_(0.2)/FVC%、PEF、FEF_(25%~75%)与哮喘组比较,差异无统计学意义(P>0.05);中药组大鼠FVC、FEV_(0.2)、FEV_(0.2)/FVC%、PEF、FEF_(25%~75%)均高于哮喘组和激素组(P<0.05)。哮喘组大鼠肺组织中CollagenⅠmRNA、CollagenⅢmRNA、CollagenⅠ蛋白、CollagenⅢ蛋白相对表达量均显著高于正常组(P<0.05);激素组大鼠肺组织中CollagenⅢmRNA、CollagenⅠ蛋白、CollagenⅢ蛋白相对表达量均显著低于哮喘组(P<0.05);中药组大鼠肺组织中CollagenⅠmRNA、CollagenⅢmRNA、CollagenⅠ蛋白、CollagenⅢ蛋白相对表达量均显著低于激素组(P<0.05)。结论:加减乌梅丸颗粒可减少哮喘大鼠激素干预模型肺组织CollagenⅠ、CollagenⅢ蛋白沉积,改善大鼠肺通气功能,延缓气道重塑的发展进程。

Novel electrospun poly(ε-caprolactone)/type Ⅰ collagen nanofiber conduits for repair of peripheral nerve injury

Recent studies have shown the potential of artificially synthesized conduits in the repair of peripheral nerve injury.Natural biopolymers have received much attention because of their biocompatibility.To investigate the effects of novel electrospun absorbable poly(ε-caprolactone)/type I collagen nanofiber conduits(biopolymer nanofiber conduits)on the repair of peripheral nerve injury,we bridged 10-mm-long sciatic nerve defects with electrospun absorbable biopolymer nanofiber conduits,poly(ε-caprolactone)or silicone conduits in Sprague-Dawley rats.Rat neurologica1 function was weekly evaluated using sciatic function index within 8 weeks after repair.Eight weeks after repair,sciatic nerve myelin sheaths and axon morphology were observed by osmium tetroxide staining,hematoxylin-eosin staining,and transmission electron microscopy.S-100(Schwann cell marker)and CD4(inflammatory marker)immunoreactivities in sciatic nerve were detected by immunohistochemistry.In rats subjected to repair with electrospun absorbable biopolymer nanofiber conduits,no serious inflammatory reactions were observed in rat hind limbs,the morphology of myelin sheaths in the injured sciatic nerve was close to normal.CD4 immunoreactivity was obviously weaker in rats subjected to repair with electrospun absorbable biopolymer nanofiber conduits than in those subjected to repair with poly(ε-caprolactone)or silicone.Rats subjected to repair with electrospun absorbable biopolymer nanofiber conduits tended to have greater sciatic nerve function recovery than those receiving poly(ε-caprolactone)or silicone repair.These results suggest that electrospun absorbable poly(ε-caprolactone)/type I collagen nanofiber conduits have the potential of repairing sciatic nerve defects and exhibit good biocompatibility.All experimental procedures were approved by Institutional Animal Care and Use Committee of Taichung Veteran General Hospital,Taiwan,China(La-1031218)on October 2,2014.

Collagen type Ⅲ is an important linking molecule between generated renal tubules and an artificial polyester interstitium--Reticulin as a linker between generated tubules and the interstitium

在再生医学领域,已经有很多人考虑在将来用干/祖细胞治疗急慢性肾功能衰竭。但是,要使这种治疗方案行之有效,需要了解关于患病肾脏肾小管发育的细胞生物学信息。与干/祖细胞治疗急慢性肾功能衰竭相关尚待明晰的细胞生物学问题包括:①干/祖细胞的整合。②干/祖细胞的定向分化类型。③新形成肾小管的空间构成。为了更好的了解这项技术的相关机制,文章应用了先进的培养技术在人工非细胞外基质材料界面条件下构建肾小管。将新生兔肾来源的干/祖细胞用多层聚酯纤维网覆盖,放置在灌注培养器中,用含1×10-7mol/L醛固酮的新鲜合成的在DMEM基础上改良的IMDM培养基诱导培养13d。扫描电镜下,在大豆凝集素、银染和抗Ⅲ型胶原或层粘连蛋白γ1单克隆抗体标记的全标本包埋爬片或冰冻切片上观察肾小管的生长情况。扫描电镜观察结果显示,新生成的肾小管完全被基底膜覆盖,纤维网状板有大量的纤维与生成的肾小管基底面和周围人工聚酯材料相互交联。抗Ⅲ型胶原染色和银染结果表明,在新生成的肾小管的基底膜和邻近的人工聚酯材料间有大量的纤维交织,在发育成熟的肾小管中有与新生成肾小管相同排列形式的Ⅲ型胶原纤维。以上实验结果说明,Ⅲ胶原是联系新生成的肾小管基底面和人工基质聚酯纤维的分子纽带。

Significance of elevated serum concentration of type Ⅰ collagen metabolites and its correlation with serum interleukin 6 activities in multiple myeloma

In this study, serum concentrations of carboxyterminal propeptide of type Ⅰ collagen(PICP) and carboxyterminal cross-linked telopeptide of type Ⅰ collagen (ICTP), which represent the rates of synthesis and degradation of type Ⅰ collagen, were determined by radioimmunoassay in 56 patients with multiple myeloma (MM) and 22 healthy controls. It was discovered that serum concentrations of both PICP and ICTP were higher in MM than those in healthy controls (P<0. 01 ). With the disease progressing and the number of bone lesions increasing,serum concentration of ICTP elevated while serum concentration of PICP showed no significant change. Neither serum PICP nor ICTP concentration was related to M-component classes. Our results indicated that serum ICTP concentration was a good serological marker to reflect severity of bone lesions in MM and elevated serum PICP concentration might be due to compensatory increase in type Ⅰ collagen synthesis. Moreover, we also found that serum ICTP concentrations in MM correlated with serum interleukin-6 (IL-6) activities (r= 0. 610, P< 0. 01),which confirms the effectiveness of IL-6 as an osteoclast activating factor.

EFFECTS OF TGF-β_1 ON CELLULAR PROLIFERATION ANDEXPRESSION OF TYPE Ⅲ COLLAGEN BY CULTURED RATRENAL INTERSTITIAL FIBROBLASTS

Objective To investigate the effects of TGF- β1 on proliferation and type N collagen mRNAexpression of rat renal interstitial libroblasts in vitro for elucidating the role of fibroblasts in renal interstitialfibrosis. Methods The cells were cultured in media containing various concentrations of TGF- β1. Theproliferation and the type Ⅲ collagen mRNA expression of the cells were assayed with MTT method andRT- PCR respectively. Results TGF- β1, has a stimulating proliferation effect with dose- dependence and aincreasing expression of type Ⅲ collagen mRNA with both dose- and time- dependence to the renal fibroblasts. Conclusion It is suggested that TGF- β, is involved in proliferation of renal fibroblasts and their type Ⅲcollagen mRNA expression, and may play an important role in renal interstitial fibrosis.

Effect of Sishen pill on expression of type Ⅰ and type Ⅲ interferon in acute ulcerative colitis mice model

Objective:To investigate the effects of Sishen pill on the expression of type I interferon(IFN)and type III interferon and their receptors in colonic tissues of mice with acute ulcerative colitis(UC).Methods:Male C57BL/6Cnc mice were randomly divided into control group,model group,sishenwan group and salazosulfapyridine group.The model was made with 0.2 mL 4%dextran sodium sulfate(DSS)for 5 days,and the control group was given 0.2mL normal saline by gavage.On the second day of modeling,sishen pill group was given 0.2mL 1.5 g·kg^(-1) sishen pill,and SASP group was given 0.2mL 0.25 g·kg^(-1) sulfasalazine,twice a day,for 7 days.During the administration period,the disease activity index(DAI)of mice was calculated every day.After administration,the histopathological changes of colon tissues of mice in each group were observed by hematoxylin eosin(HE)staining,and the histological scores were calculated.The expression of IFN-α,IFN-β,IFN-λ2 and IFN-λ3 mRNAs in colon tissues of mice in each group were detected by qRT-PCR.The expression levels of IFN-α,IFN-β,IFN-λ2 and IFN-λ3 in colon tissues of mice in each group were detected by ELISA.Western blot was used to detect the expression of interferon receptors IFNAR1,IFNAR2 and IFNLR1 in colon tissues of mice in each group.Results:Compared with the control group,the DAI of mice increased significantly(P<0.001)in the model group.The inflammatory cells in colonic tissues infiltrated heavily,lymph nodes enlarged,colonic mucosal structure destroyed,crypt structure lost,inflammation involved a wide range,and the histological score increased significantly(P<0.001).The levels of IFN-α,IFN-βand IFNλ2 mRNA were significantly decreased(P<0.05,P<0.05,P<0.01).The expression levels of IFN-α,IFN-β,IFN-λ2 and IFN-λ3 were significantly decreased(P<0.01,P<0.01,P<0.001,P<0.001).The levels of IFNAR1,IFNAR2 and IFNLR1 were significantly decreased(P<0.01,P<0.05,P<0.01).Compared with the model group,the DAI decreased significantly(P<0.001)in Sishen pill group,the infiltration of inflammatory cells in colon tissue were significantly reduced,the structural regeneration of colon mucosa was significantly recovered,the crypt structure was significantly recovered,the lymph nodes were significantly reduced,the range of inflammation involvement was reduced,and the histological score was significantly reduced(P<0.001).The levels of IFN-α,IFN-βand IFN-λ2 mRNA were significantly increased(P<0.01,P<0.001,P<0.001).The levels of IFN-α,IFN-β,IFN-λ2 and IFN-λ3 were significantly increased(P<0.01,P<0.001,P<0.01,P<0.001).The levels of IFNAR1,IFNAR2 and IFNLR1 were significantly increased(P<0.05,P<0.001,P<0.05).Conclusion:Sishen pill may alleviate the symptoms and signs of mice with acute ulcerative colitis by regulating the expression of type I and type III interferon and their receptors in colon tissues.

生肌化瘀方及其拆方对大鼠创面修复早期肉芽组织中Ⅰ、Ⅲ型胶原的影响

目的:探讨生肌化瘀方及其拆方对创面修复早期Ⅰ、Ⅲ型胶原的影响。方法:将24 只清洁级雄性SD大鼠随机分为4组:生肌化瘀方组、生肌方组、化瘀方组和模型组。以大鼠皮肤全层缺损创面为模型,采用免疫组化和图像分析相结合的方法,观察各组大鼠创面修复早期肉芽组织中Ⅰ、Ⅲ型胶原的变化。结果:在创面修复的第3 天,生肌方组和生肌化瘀方组的Ⅰ型胶原水平均高于模型组,化瘀方组则低于模型组(P <0.05);生肌方组、化瘀方组和生肌化瘀方组的Ⅲ型胶原水平均低于模型组(P<0.05),以化瘀方组更为明显;在创面修复的第7 天,生肌方组、生肌化瘀方组的Ⅰ型胶原水平均低于模型组(P<0.05);生肌方组和化瘀方组的Ⅲ型胶原水平均高于模型组(P<0.05)。结论:祛瘀生肌法可以促进大鼠创面修复,减少瘢痕形成。

肺纤平对博莱霉素所致肺纤维化大鼠Ⅰ、Ⅲ型胶原的影响

目的观察肺纤平对肺纤维化大鼠Ⅰ、Ⅲ型胶原的影响。方法将60只健康雄性SD大鼠随机分为5组,即正常组、模型组、阳性药(泼尼松)组和肺纤平低、高剂量组。除正常组外,其余4组用博莱霉素注入大鼠气管内制作肺纤维化模型,各组于造模后第1天给予相应药物,分别于第7、14、28天处死大鼠,取肺组织进行HE染色,普通光镜下观察大鼠肺组织病理学变化,并进行免疫组化染色,观察大鼠肺组织Ⅰ、Ⅲ型胶原的变化。结果HE染色显示,造模后第14天开始大鼠肺组织肺泡间壁内出现淡染、增生的胶原纤维,肺泡间壁略有增厚,第28天较第14天时病变更加明显;模型组胶原纤维增生最多,各治疗组病变较模型组轻,且Ⅰ、Ⅲ型胶原增生减少(P<0.05),肺纤平高剂量组给药14天Ⅰ、Ⅲ型胶原增生减少,其减少程度优于阳性药组(P<0.05)。结论肺纤平可以有效地抑制实验性肺纤维化大鼠胶原的异常增生。

生肌化瘀方及其拆方对大鼠创面成纤维细胞Ⅰ、Ⅲ型胶原合成的影响

目的 :探讨生肌化瘀方及其拆方促进创面修复 (呈皮肤修复 )的作用机理。方法 :采用体外培养创面肉芽组织成纤维细胞 ,以乳鼠皮肤成纤维细胞作对照 ,分别加入生肌方、化瘀方及生肌化瘀方大、小剂量药物血清 ,运用细胞化学ABC法检测成纤维细胞Ⅰ、Ⅲ型胶原的含量。结果 :生肌方能够提高创面成纤维细胞Ⅰ、Ⅲ型胶原含量 ,且均高于模型组 (P <0 0 1) ;化瘀方能够降低创面成纤维细胞Ⅰ、Ⅲ型胶原含量 ,且低于模型组 (P <0 0 1) ;生肌化瘀方大、小剂量组Ⅰ、Ⅲ型胶原含量与正常组比较差异均无显著性 (P >0 0 5 )。结论 :生肌化瘀方能够促进创面修复 ,其可能的作用机理是通过调节Ⅰ、Ⅲ型胶原的比值来调控Ⅰ。

加味茵陈四逆汤对肝纤维化小鼠Smad7及Ⅰ、Ⅲ型胶原蛋白表达的影响

目的:探讨预防性使用加味茵陈四逆汤对肝纤维化小鼠Smad7和Ⅰ型胶原蛋白(CollagenⅠ)、Ⅲ型胶原蛋白(CollagenⅢ)基因表达的影响。方法:雄性ICR小鼠48只,随机分为正常对照组、模型组、秋水仙碱组及加味茵陈四逆汤高、中、低剂量组,每组8只。采用腹腔注射30%CCl4(1.5 mg/kg,溶解于橄榄油)建立肝纤维化模型,同时给予药物灌胃处理。用药14 d后,计算肝脏指数;试剂盒检测血清透明质酸(HA)、层粘连蛋白(LN)水平;各组行HE染色观察肝组织病理改变并进行肝纤维化分级;RT-q PCR法检测肝组织Smad7、CollagenⅠ、CollagenⅢmRNA表达。结果:(1)加味茵陈四逆汤中、低剂量组肝脏指数和HA、LN水平较模型组显著降低(P<0.05);(2)加味茵陈四逆汤各剂量组肝纤维化较模型组减轻(P<0.05);(3)与模型组比较,各给药组CollagenⅠmRNA表达显著降低(P<0.05),除加味茵陈四逆汤高剂量组外,各给药组Smad7 mRNA表达显著升高(P<0.05),除加味茵陈四逆汤低剂量组外,各给药组CollagenⅢmRNA表达显著降低(P<0.05)。结论:加味茵陈四逆汤可上调肝纤维化小鼠Smad7表达,抑制CollagenⅠ、CollagenⅢ表达,发挥对肝纤维化的抑制作用。