卵巢子宫内膜异位症患者miR-200c和ZEB1基因表达及其临床意义

目的 探讨卵巢子宫内膜异位症（EMs）患者微小RNA(miR)-200c和E盒结合锌指蛋白1(ZEB1)基因表达及其临床意义。方法 收集2022年1月至2022年6月在石家庄市人民医院手术治疗的卵巢EMs患者异位、在位内膜组织各50例；选取同期由于宫颈上皮内瘤样病变（CIN）Ⅲ行全子宫切除术患者的子宫内膜组织50例作为对照组。采用实时荧光定量PCR法测定miR-200c和ZEB1基因表达；采用免疫组化法测定ZEB1蛋白表达。比较各组miR-200c和ZEB1相对表达量；比较各组ZEB1蛋白阳性率；分析miR-200c与ZEB1相关性；分析miR-200c和ZEB1与卵巢EMs关系。结果 异位内膜组miR-200c和ZEB1相对表达量高于在位内膜组和对照组（P<0.05）；在位内膜组miR-200c和ZEB1相对表达量高于对照组（P<0.05）。异位内膜组ZEB1蛋白阳性率高于在位内膜组和对照组（P<0.05）；在位内膜组ZEB1蛋白阳性率高于对照组（P<0.05）。经Pearson分析显示，miR-200c与ZEB1呈线性正相关（P<0.05）。经多因素L...     

COX-2、VEGF以及MVD在子宫内膜异位症中的表达及意义

目的通过探讨环氧合酶-2（COX-2）、血管内皮生长因子（VEGF）以及微血管密度（MVD）在子宫内膜异位症（EMs）在位内膜、异位内膜及正常子宫内膜组织中的表达,探讨子宫内膜异位症的发病机制。方法采用免疫组化SP法检测EMs患者32例在位内膜、28例异位内膜及40例对照组正常子宫内膜中COX-2、VEGF的蛋白表达,计数微血管密度（MVD）值,并进行相关性分析。结果 （1）COX-2、VEGF在EMs在位内膜、异位内膜阳性表达率明显高于正常对照组,差异具有统计学意义（P〈0.05）,EMs异位内膜组COX-2、VEGF阳性表达率高于在位内膜组,差异有统计学意义（P〈0.05）。（2）MVD的计数在正常对照组,在位内膜组,异位内膜组依次递增,在位内膜组、异位内膜组与正常对照组比较有统计学差异（P〈0.05）,而在位内膜组与异位内膜组比较有统计学差异（P〈0.05）。（3）EMs在位内膜、异位内膜组患者和正常对照组COX-2蛋白表达与VEGF蛋白及MVD值的变化呈正相关。结论 COX-2与VEGF在EMs中的高表达,与子宫内膜异位的血管生成有关。     

miR-654-3p靶向GMFB抑制骨肉瘤细胞增殖的作用及机制研究

目的 探究miR-654-3p对骨肉瘤细胞增殖的影响，预测其靶基因并评估靶基因对骨肉瘤患者生存预后的干预情况。方法 选择GEO数据库中GSE70367数据集进行差异分析，筛选骨肉瘤细胞中异常表达的miRNA，通过RT-qPCR检测miR-654-3p在骨肉瘤细胞系143B、MG-63、SAOS2和HOS中的表达情况。通过TargetScan和miRmap数据库预测miR-654-3p的靶基因，采用双荧光素酶报告基因实验验证miR-654-3p与GMFB基因的结合。用CCK8实验和CFU实验分析miR-654-3p和GMFB对骨肉瘤细胞MG-63和HOS增殖的影响。下载TCGA数据库中肉瘤患者的GMFB表达数据和临床信息，通过R软件包绘制GMFB对生存预后影响的KM曲线以及预测肉瘤患者1年、3年和5年生存率的列线图。结果 与人正常成骨细胞hFOB1.19相比，骨肉瘤细胞系143B、MG-63、SAOS2和HOS中miR-654-3p的表达均明显降低（P＜0.05）。miR-654-3p与GMFB基因结合，并负调控GMFB的表达。miR-654-3p模拟物在体外明显抑制骨肉瘤细胞的增殖，而GMFB转染能够逆转抑制作用（P＜0.05）。GMFB高表达的骨肉瘤患者的总体生存率明显低于低表达患者（P＜0.05），且通过列线图能够预测患者的1年、3年和5年生存率。结论 miR-654-3p通过靶向负调控GMFB基因表达，抑制骨肉瘤细胞的增殖，且GMFB高表达与骨肉瘤患者的预后呈负相关。     

基于生物信息学方法和免疫组化分析FASN在宫颈癌组织的表达及临床意义

目的 利用生物信息学方法和免疫组化分析脂肪酸合酶 （FASN） 在宫颈癌 （CC） 组织中的表达水平及相应的临床意义。方法 从癌症基因组图谱 （TCGA） 数据库中下载CC患者的RNA测序数据及临床信息,通过R4.2.2提取FASN表达数据,并结合患者的临床特征,探讨FASN在CC组织中的表达水平、与临床特征的相关性以及患者预后的关系。同时,通过基因集富集 （GSEA） 揭示FASN相关的生物学功能和信号通路。最后,通过免疫组化实验证实了FASN在CC组织中的表达,并分析了 FASN表达的免疫组化 （IHC） 评分与临床特征的相关性。结果 （1） TCGA数据库及本研究的临床标本均证实,与癌旁组织相比,FASN 在 CC 组织中呈现高表达 （P＜0.001,P=0.028 5）,并与淋巴结转移和病理分级显著相关 （P＜ 0.001,P=0.029;P=0.012,P=0.047）。（2） FASN在CC患者中表达水平较高者,其总生存期与无进展生存期明显缩短 （P＜ 0.001,P＜0.001）。（3） FASN 表达的 IHC 高评分组 CC 患者的身体质量指数 （BMI） 显著高于低评分组 （P＜0.001）。（4） HPV感染状态对于 FASN表达的 IHC评分高低具有显著差异性 （P＜0.001）。（5） FASN高表达 CC患者的基因富集在癌症途径、细胞外基质-受体相关作用、氮代谢、黑色素瘤和肌动蛋白细胞骨架等调节通路。结论 FASN在CC组织中高表达,且与患者淋巴结转移、病理分级、HPV感染状态、BMI和不良预后相关,有望成为诊断CC的新兴生物标志物及治疗靶点。     

miR-144-3p对大鼠脊髓损伤后巨噬细胞炎症反应和功能恢复的影响

目的 探究miR-144-3p对脊髓损伤大鼠的巨噬细胞炎症反应和运动功能恢复的影响。方法 分析脊髓损伤大鼠miRNA表达数据集GSE19890中miR-144的表达情况;在ENCORI网站中预测miR-144-3p的靶基因,并通过双荧光素酶报告基因实验验证miR-144-3p与靶基因的结合情况;构建脊髓损伤大鼠模型,采用RT-qPCR和Western blot实验验证损伤区域miR-144-3p和Notch1的变化情况;用miR-144-3p mimics或miR-144-3p NC转染LPS诱导的巨噬细胞或经鞘内注射脊髓损伤的大鼠,探究miR-144-3p对体内外巨噬细胞炎症反应和大鼠运动功能恢复的影响。结果 数据集GSE19890中miR-144在大鼠脊髓损伤7 d时明显下调。Notch1作为miR-144-3p的靶基因被其负调控。miR-144-3p在脊髓损伤大鼠模型损伤7 d时明显下调,而Notch1的表达则明显上调。miR-144-3p能够明显抑制LPS体外诱导的M1型巨噬细胞炎症反应和脊髓损伤导致的体内巨噬细胞炎症反应,并且促进脊髓损伤大鼠的运动功能恢复。结论 miR-144-3p靶向调控Notch1的表达,并且通过抑制巨噬细胞炎症反应来促进大鼠脊髓损伤后运动功能的恢复。     

TGFβ1与EGFR在子宫内膜异位症中的表达及意义

目的检测转化生长因子β1（transforming growth factor beta 1,TGF-β1）以及表皮生长因子受体（epidermal growth factor receptor,EGFR）在子宫内膜异位症中的表达,探讨两者在子宫内膜异位症发生发展中的作用。方法采用免疫组织化学方法检测子宫内膜异位症患者在位内膜（10例）、异位内膜（10例）、正常子宫内膜（10例）中TGF-β1和EGFR的表达情况。结果TGF-β1在子宫内膜异位症异位内膜组中的表达显著高于子宫内膜异位症在位内膜组及对照组（P〈0.05）,TGF-β1在子宫内膜异位症在位内膜组及对照组中的表达无显著性差异（P〉0.05）;EGRF在子宫内膜异位症异位内膜组及在位内膜组中的表达显著低于对照组（P〈0.05）,EGFR在子宫内膜异位症异位内膜组及在位内膜组中的表达无显著性差异（P〉0.05）。结论TGF-β1及EGFR的异常表达可能与子宫内膜异位症的发生发展有关。     

MMP-2、MMP-9及EMMPRIN在子宫内膜异位症中的表达及临床意义

目的研究基质金属蛋白酶2（MMP-2）、基质金属蛋白酶9（MMP-9）、细胞外基质金属蛋白酶诱导因子（EMMPRIN）在子宫内膜异位症（EMs）的表达和意义。方法应用免疫组化二步法检测EMs患者异位内膜42例、在位内膜42例及正常内膜20例中的MMP-2、MMP-9、EMMPRIN的表达情况,并对它们的EMMPRIN、MMP-2、MMP-9蛋白表达水平进行相关性分析。结果 MMP-2、MMP-9、EMMPRIN在异位内膜组中阳性表达率分别为95.24%、92.86%和90.48%,显著高于在位内膜组、正常内膜组（P〈0.05）;而在位内膜组和正常内膜组差异无统计学意义（P〉0.05）。异位内膜组中,EMMPRIN分别和MMP-2,MMP-9呈正相关性（P〈0.01）。结论 MMP-2、MMP-9、EMMPRIN共同参与了子宫内膜异位症的发生发展;EMMPRIN可能通过促进MMP-2和MMP-9的合成与分泌发挥其作用。     

基质金属蛋白酶MMP-7及其抑制因子TIMP-1在子宫内膜异位症中的表达及意义

目的 观察基质金属蛋白酶-7(matrix metalloproteinase-7,MMP-7)和基质金属蛋白酶抑制因子-1(tissue inhibitors of matrix metalloproteinase-1,TIMP-1)在子宫内膜异位症(Endmetriosis,EMs)中的表达,探讨二者在EMs发病机制中的作用.方法 采用免疫组化链霉菌抗生物素蛋白-过氧化物酶连接(SP)法检测35例EMs患者的在位内膜,异位内膜及20例时照组为因肌壁间或浆膜下子宫肌瘤在我科行子宫切除术,且月经周期正常的子宫内膜中MMP-7和TIMP-1表达情况,检测结果采用SPSS软件进行统计学分析.结果 MMP-7在EMs在位内膜中的阳性表达率为57.1%,异位内膜中的阳性表达率45.7%,与对照组子宫内膜组织的表达(阳性率为40.0%)相比无显著性差异(P＞0.05).研究组异位内膜中的表达强度明显高于对照组,两者比较,差异有统计学意义(P＜0.05).TIMP-1在两组所有标本中均有阳性表达.TIMP-1在研究组异位内膜中的表达强度低于在位内膜,两者比较,差异有统计学意义(P＜0.05).研究组在位内膜中的表达强度稍低于对照组,两组比较,差异无统计学意义(P＞0.05).结论 MMP-7在EMs的发生过程中起了重要作用.MMP-7在位内膜中表达增强,异位内膜TIMP-1表达减弱,是EMs患者在位内膜、异位内膜细胞具有侵袭能力的原因之一.     

miR-328-5p通过调控RAGE对异位子宫内膜细胞生物学功能的影响

目的 探讨miR-328-5p在异位子宫内膜细胞生物学功能中的作用及潜在机制。方法 实时荧光定量聚合酶链反应（RT-qPCR）和Western blot检测异位子宫内膜组织中miR-328-5p、RAGE mRNA和蛋白的表达。分离并培养异位子宫内膜基质细胞，将其分为NCmimic组、miR-328-5pmimic组、miR-328-5pmimic+Vector组、miR-328-5p mimic+pcDNA-RAGE组，RT-qPCR检测细胞中miR-328-5p和RAGE mRNA的表达；CCK-8实验检测细胞增殖能力；Transwell实验检测细胞侵袭和迁移能力；Westernblot实验检测RAGE蛋白的表达；生物信息学和双荧光素酶报告基因实验用来预测和验证miR-328-5p和RAGE的靶向关系。结果 与正常子宫内膜组织比较，异位子宫内膜组织中miR-328-5p表达显著降低，RAGE mRNA和蛋白表达显著升高（P<0.05）。与NC mimic组比较，miR-328-5p mimic组细胞中miR-328-5p表达显著升高，RAGE mRNA和蛋白表达显著降低，细胞...     

CD44s、纤维粘连蛋白表达与子宫内膜异位症发病关系的研究

目的：探讨细胞黏附分子（CAMS）纤维粘连蛋白（FN）、CD44s与子宫内膜异位症发病的关系.方法：S-P免疫组化法法检测子宫内膜异位症在位内膜（22例）、异位内膜（45例）、对照组子宫内膜（20例）进行病理组织化学观察和CD44s、FN表达的检测.结果：对照组相比子宫内膜CD44s主要表达于腺上皮细胞,FN表达于基质细胞,与对照组相比子宫内膜异位症在位子宫内膜CD44s、FN均表达于下降,差异有显著性（P〈0.05）,异位内膜组CD44s、FN表达明显降低,差异有显著性（P〈0.05）.结论：子宫内膜异位症患者从子宫内膜到异位病灶,CD44s、FN均有明显的变化,这可能与子宫内膜异位症的发生、发展、不孕有关.     

Pain and Effusion and Quadriceps Activation and Strength

Context:

Quadriceps dysfunction is a common consequence of knee joint injury and disease, yet its causes remain elusive.

Objective:

To determine the effects of pain on quadriceps strength and activation and to learn if simultaneous pain and knee joint effusion affect the magnitude of quadriceps dysfunction.

Design:

Crossover study.

Setting:

University research laboratory.

Patients or Other Participants:

Fourteen (8 men, 6 women; age = 23.6 ± 4.8 years, height = 170.3 ± 9.16 cm, mass = 72.9 ± 11.84 kg) healthy volunteers.

Intervention(s):

All participants were tested under 4 randomized conditions: normal knee, effused knee, painful knee, and effused and painful knee.

Main Outcome Measure(s):

Quadriceps strength (Nm/kg) and activation (central activation ratio) were assessed after each condition was induced.

Results:

Quadriceps strength and activation were highest under the normal knee condition and differed from the 3 experimental knee conditions (P < .05). No differences were noted among the 3 experimental knee conditions for either variable (P > .05).

Conclusions:

Both pain and effusion led to quadriceps dysfunction, but the interaction of the 2 stimuli did not increase the magnitude of the strength or activation deficits. Therefore, pain and effusion can be considered equally potent in eliciting quadriceps inhibition. Given that pain and effusion accompany numerous knee conditions, the prevalence of quadriceps dysfunction is likely high.Key Words: arthrogenic muscle inhibition, central activation failure, voluntary activation, muscles

Key Points

• Knee pain and effusion resulted in arthrogenic muscle inhibition and weakness of the quadriceps.
• The simultaneous presence of pain and effusion did not increase the magnitude of quadriceps dysfunction.
• To reduce arthrogenic muscle inhibition and improve muscle strength, clinicians should employ interventions that target removing both pain and effusion.

Quadriceps weakness is a common consequence of traumatic knee joint injury^1,2 and chronic degenerative knee joint conditions.^3,4 Arthrogenic muscle inhibition (AMI), a neurologic decline in muscle activation, results in quadriceps weakness and hinders rehabilitation by preventing gains in strength.⁵ The inability to reverse AMI and restore muscle function can lead to decreased physical abilities,⁶ biomechanical deficits,⁷ and possibly reinjury.⁵ Furthermore, researchers^8,9 have suggested that quadriceps weakness resulting from AMI may place patients at risk for developing osteoarthritis in the knee. In light of the substantial influence of quadriceps AMI on these clinically relevant outcomes, we need to improve our understanding of the factors that contribute to this neurologic decline in muscle activity so efforts to target and reverse it can be implemented and gains in strength can be achieved more easily.Joint injury and disease are accompanied by numerous sequelae (ie, pain, swelling, tissue damage, inflammation), so ascertaining which one ultimately leads to neurologic muscle dysfunction is difficult. Whereas a joint effusion can result in AMI,^10–12 the effects of pain are less understood despite many clinicians attributing AMI to pain. Using techniques that introduce knee pain without accompanying injury may provide insights into the role of pain in eliciting AMI.The degree of knee joint damage may play a role in the quantity of AMI that manifests. Hurley et al^13,14 demonstrated that quadriceps AMI, measured using an interpolated-twitch technique, was greater in patients with extensive traumatic knee injury (eg, fractured tibial plateau, ruptured medial collateral ligament, and medial meniscectomy) than patients with isolated joint trauma (ie, isolated anterior cruciate ligament [ACL] rupture). Similarly, patients with more knee joint symptoms (ie, greater number of symptoms and increased severity of symptoms) may present with greater magnitudes of quadriceps inhibition. Recently, investigators¹⁵ have suggested that patients with more pain display less quadriceps strength, supporting this tenet. Given that effusion and pain often present simultaneously with joint injuries and diseases, such as ACL injury and osteoarthritis, examining both the isolated and cumulative effects of these sequelae appears warranted to determine if they influence the magnitude of muscle inhibition.Experimental joint-effusion and pain models are safe and effective experimental methods that allow for the isolated examination of their effects on muscle function. The effusion model, whereby sterile saline is injected directly into the knee joint capsule,⁷ produces a clinically relevant magnitude of the joint effusion that may be present with traumatic injury. Effusion is thought to activate group II afferents responding to stretch or pressure,^16–18 which in turn may facilitate group Ib interneurons and result in quadriceps AMI.⁵ The pain model involves injecting hypertonic saline into the infrapatellar fat pad to produce anteromedial knee pain similar to that described in patients with patellofemoral pain syndrome.¹⁹ Pain is considered to initiate AMI through activation of group III and IV afferents that act as nocioceptors to signal damage or potential damage to joint structures.^16–18 The firing of these afferents then may lead to facilitation of group Ib interneurons, the flexion reflex, or the gamma loop, ultimately resulting in quadriceps inhibition.²⁰ Thus, these models allow us to create symptoms that are associated with knee injury and have the added benefit of providing a way to examine their effects in isolation.Therefore, the purpose of our study was to determine the effects of pain on quadriceps strength and activation and to learn if simultaneous pain and knee joint effusion would affect the magnitude of quadriceps dysfunction. We hypothesized that pain alone would result in quadriceps inhibition and that the magnitude of inhibition would be greater when effusion and pain were present simultaneously.     

即早基因c-fos与脑血管病及学习记忆

即早基因c-fos是广泛存在于原核细胞和真核细胞的高度保守基因.在正常情况下,c-fos基因参与细胞生长、分化、信息传递、学习和记忆等生理过程,而在病理情况下c-fos基因表达及调控变化与多种疾病的发生和发展有关.C-fos在中枢神经系统的某些部位可有基础水平的表达,但表达很低,当受到如脑缺血、脑出血、痫性发作、应激等刺激后,其在数十分钟内做出反应,在对外界刺激-转录耦联的信忠传递过程中起着核内第三信使的重要作用.     

Opportunities and challenges in the prevention and control of cancer and other chronic diseases: children's diet and nutrition and weight and physical activity

OBJECTIVE: The purpose of this article is to review the role of behavioral research in disease prevention and control, with a particular emphasis on lifestyle- and behavior-related cancer and chronic disease risk factors--specifically, relationships among diet and nutrition and weight and physical activity with adult cancer, and tracking developmental origins of these health-promoting and health-compromising behaviors from childhood into adulthood. METHOD: After reviewing the background of the field of cancer prevention and control and establishing plausibility for the role of child health behavior in adult cancer risk, studies selected from the pediatric published literature are reviewed. Articles were retrieved, selected, and summarized to illustrate that results from separate but related fields of study are combinable to yield insights into the prevention and control of cancer and other chronic diseases in adulthood through the conduct of nonintervention and intervention research with children in clinical, public health, and other contexts. RESULTS: As illustrated by the evidence presented in this review, there are numerous reasons (biological, psychological, and social), opportunities (school and community, health care, and family settings), and approaches (nonintervention and intervention) to understand and impact behavior change in children's diet and nutrition and weight and physical activity. CONCLUSIONS: Further development and evaluation of behavioral science intervention protocols conducted with children are necessary to understand the efficacy of these approaches and their public health impact on proximal and distal cancer, cancer-related, and chronic disease outcomes before diffusion. It is clear that more attention should be paid to early life and early developmental phases in cancer prevention.