MicroRNA-629-5p promotes osteosarcoma proliferation and migration by targeting caveolin 1

Osteosarcoma is a highly malignant tumor that occurs in the bone. Previous studies have shown that multiple microRNAs (miRNAs) regulate the development of osteosarcoma. This study aimed to explore the role of miR-629-5p and its target gene, caveolin 1 (CAV1), in osteosarcoma development. To analyze the expression of miR-629-5p and CAV1 mRNA in osteosarcoma tissues and cell lines, qRT-PCR analysis was performed. Dual-luciferase reporter experiments were subsequently performed to validate the relationship between CAV1 and miR-629-5p. CCK8 assay was used to measure osteosarcoma cell proliferation, and wound-healing assay was performed to study their migratory phenotype. Our findings revealed that miR-629-5p was overexpressed in osteosarcoma tissues and cells, and thereby enhanced cell proliferation and migration. Further, we validated that miR-629-5p targets CAV1 mRNA directly. CAV1 expression, which was negatively correlated with miR-629-5p expression, was found to be downregulated in osteosarcoma tissue samples. Moreover, our data showed that an increase in CAV1 level led to a decline in osteosarcoma cell proliferation and migration, which could be rescued by miR-629-5p upregulation. Overall, our study confirmed that miR-629-5p promoted osteosarcoma proliferation and migration by directly inhibiting CAV1.     

Activity of MSI-78, h-Lf1-11 and cecropin B antimicrobial peptides alone and in combination with voriconazole and amphotericin B against clinical isolates of Fusarium solani

Fusarium infections have been associated with high mortality rates due to the lack of definition of an ideal treatment strategy. Antimicrobial peptides (AMPs) have potential antifungal activity. Therefore, investigating the in vitro activity of these molecules alone and in association with conventional antifungals against clinical isolates of Fusarium was the aim of this study. Fusarium solani (n = 10) strains were tested against the AMPs, MSI-78, h-Lf1-11 and cecropin B in accordance with CLSI protocol. Further, a checkerboard assay for its combination with amphotericin B or voriconazole, was carried out. MSI-78, h-Lf1-11 and cecropin B exhibited antifungal activity against F. solani strains tested with MICs ranging from 20 to 320 mg/L. Satisfactory percentage of synergism was demonstrated for all evaluated combinations, ranging from 70 to 100%. The use of AMPs combined with amphotericin B and voriconazole antifungals has great synergistic potential and deserve to be evaluated in murine models of fusariosis.     

血浆甲状腺球蛋白、颈部超声以及99TcmO4-甲状腺静态显像对甲状腺结节良恶性鉴别的临床意义

目的 探讨术前血浆甲状腺球蛋白（Tg）、颈部超声及99TcmO4-甲状腺静态显像三者联合检查对鉴别甲状腺结节良恶性的临床意义.方法 对手术并有病理诊断的103例甲状腺结节患者进行回顾性资料分析.根据患者术前检查项目分为三组：三项完整检查者31例为A组,检查颈部超声和99TcmO4-甲状腺静态显像者43例为B组,仅检查颈部超声者29例为C组.按照术后病理结果分别获得三组检查结果的灵敏度、特异性和准确率.结果 A、B、C三组的灵敏度分别为28.5％、83.3％、56.2％;特异性分别为58.3％、58.1％、46.2％,准确率分别为51.6％,65.1％,51.7％.结论 颈部超声和99TcmO4-甲状腺静态显像联合检查组（B组）的灵敏度、特异性及准确率明显高于单独颈部超声检查组（C组）,A组三项联合检查的灵敏度、特异性和准确率与B,C两组相比无优势.甲状腺结节术前完善颈部超声和99TcmO4-甲状腺静态显像检查对于甲状腺结节的鉴别诊断是有必要的.     

TGF-β1／Smad信号转导通路在子痫前期患者胎盘组织中的表达及其临床意义

目的检测子痫前期患者胎盘组织中TGF—β1／Smad的表达,探求TGF—β1／Smad信号转导通路在子痫前期发病中的作用。方法采用免疫组织化学法检测40例子痫前期（轻、重度）和正常孕妇15例正常妊娠妇女胎盘中TGF-β1以及Smad3、Smad4、Smad7的分布和表达,采用TUNEL法检测三组胎盘滋养细胞凋亡的情况。结果TGF-β以及Smad2、Smad3、Smad4、Smad7在正常妊娠和子痫前期患者胎盘的滋养细胞、内皮细胞、基质细胞中均有表达,以滋养细胞表达为主。TGF-β1以及Smad3、Smad4在正常妊娠组、子痫前期轻度组和重度组的表达强度及范围均呈逐渐升高趋势,Smad7在正常妊娠组、子痫前期轻度和重度组表达强度及范围依次呈逐渐下降趋势。正常妊娠和子痫前期患者胎盘的滋养细胞、内皮细胞、基质细胞均存在凋亡,以滋养细胞凋亡为主。重度子痫前期组胎盘滋养细胞凋亡（1．02）％显著高于子痫前期轻度组（0．73）％,子痫前期轻度组显著高于正常妊娠组（0．38）％,P〈0．05。滋养细胞TGF—β1的表达与滋养细胞凋亡具有相关性（r=0．96,P〈0．05）。结论子痫前期患者胎盘组织中的TGF—β1可能是通过Smad信号转导蛋白抑制滋养细胞浸润,诱导细胞凋亡。     

经阴道三维超声诊断不全纵隔子宫和弓形子宫的价值

目的探讨经阴道三维超声对不全纵隔子宫和弓形子宫的诊断价值。方法对宫腔镜和腹腔镜联合检查后确诊的不全纵隔子宫和弓形子宫各30例患者的经阴道二维和三维超声图像进行分析比较。结果宫腔镜和腹腔镜联合检查确诊的各30例不全纵隔子宫和弓形子宫中,术前经阴道二维超声准确诊断24例不全纵隔子宫和22例弓形子宫,诊断符合率分别约80．0％和73．3％;经阴道三维超声对不全纵隔子宫和弓形子宫的诊断符合率均为100％,二者比较差异有统计学意义（P〈0．05）。结论经阴道三维超声能获得二维不能获得的冠状切面,可直观、准确地显示子宫外形轮廓及宫腔内膜形态。为诊断提供量化标准,明显提高了对不全纵隔子宫和弓形子宫的诊断符合率,可作为两者首选的检查方法。     

子宫内膜样腺癌中Maspin、VEGF—C的表达与肌层浸润程度的临床研究

目的检测maspin和VEGF—C在子宫内膜样腺癌中的表达及与肌层浸润程度的意义。方法采用免疫组化法检测49例子宫内膜样腺癌及15例正常子宫内膜中maspin、VEGF—C的表达及与肌层浸润程度的意义。结果（1）Maspin在子宫内膜样腺癌中表达阳性,肌层浸润深maspin阳性表达率增高,差异无统计学意义（P〉0．05）。（2）VEGF—C在子宫内膜样腺癌中表达阳性,肌层浸润深度〉1／2组阳性率（75．0％）高于肌层浸润深度≤1／2组（36．4％）,差异具有统计学意义（P〈0．05）。（3）子宫内膜样腺癌中maspin和VEGF—C呈正相关关系（P〈0．05）。结论maspin和VEGF—C表达上调可能共同促进了子宫内膜样腺癌的发生、发展、侵袭及转移,二者联合检测可能对临床诊疗、判断预后有指导意义。     

左向右分流型先天性心脏病患儿血清MMP-2和MMP-9变化

目的探讨左向右分流先天性心脏病（CHD）患儿血清基质金属蛋白酶（MMPs）-2、9水平的变化及意义。方法采用ELISA方法检测并比较40例CHD患儿（其中无肺动脉高压组22例、肺动脉高压组18例）和20例健康患儿的血清MMP-2、MMP～9。结果CHD无肺动脉高压组及肺动脉高压组患儿MMP-2（分别为206．14±20．62及258．83±31．44,pg／ml）、MMP-9（分别为207．68±20．77及240．00±31．10pg／m1）与正常对照组相比均有显著性（P均小于0．05）;而肺动脉高压组MMP-2及MMP-9水平明显高于无肺动脉高压组,差异有显著性（P均小于0．01）。CHD患儿血清MMP-2、MMP-9与LVEF、LVFs均无明显相关性（P〉0．05）;CHD患儿血清MMP-2及MMP-9浓度与肺动脉收缩压呈正相关（r分别为0．783及0．635,n=40,P〈0．05）。结论CHD肺动脉高压患儿血清MMP-2、MMP-9浓度升高并与肺动脉收缩压成正相关,提示MMP-2、MMP-9与肺动脉高压的病理生理有关。