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Dulaglutide impedes depressive-like behavior persuaded by chronic social defeat stress model in male C57BL/6 mice: Implications on GLP-1R and cAMP/PKA signaling pathway in the hippocampus. 杜拉鲁肽抑制C57BL/6雄性小鼠慢性社会失败应激模型诱导的抑郁样行为:对海马GLP-1R和cAMP/PKA信号通路的影响
Pub Date : 2023-03-01 DOI: 10.2139/ssrn.4327439
Amal Darwish, Nesrine S. El Sayed, A. Salama, M. Saad
AIMThere is a well-founded relation between bullying and depression, which may eventually lead to suicidal behavior. Repurposing of antidiabetic drugs for the treatment of depression started to glow, which open new horizons to introduce the antidiabetic medications as new treatment picks in depression. Dulaglutide has been approved as remedy of type 2 diabetes mellitus (T2DM). Consequently, our scope of work is to investigate the ability of dulaglutide to indulgence depression via deeply reconnoitering the Glucagon-like peptide-1 receptor and cAMP/PKA Signaling Pathway.MATERIALS AND METHODSEighty mice were divided into two groups; one with and the other without the induction of chronic social defeat stress (CSDS). Each group was subdivided into two subsets; the first one was treated with saline for 42 days, while the other was treated with saline for 20 days, then with dulaglutide (0.6 mg/kg/week) for four weeks.KEY FINDINGSCSDS group showed a lessening in the social interaction ratio and sucrose consumption. They spent less exploration time in the open arms, and more time in the closed arms in elevated plus maze test as compared to controls. Furthermore, the CSDS group had a higher expression of NOD- like receptor protein-3 which explained the elevation in inflammatory biomarkers (IL-1β, IL-18, IL-6 and TNF-α) along with diminution in GLP-1R, cAMP/PKA levels. Treatment with dulaglutide markedly reversed the above-mentioned parameters via bolstering the GLP-1R/cAMP/PKA pathway.SIGNIFICANCENLRP3 inflammasome activation expedites depression. Dulaglutide activates the GLP-1R/cAMP/PKA pathway, hence offering a novel therapeutic intervention to hinder depression.
目的欺凌和抑郁之间存在着充分的联系,而抑郁最终可能导致自杀行为。将抗糖尿病药物用于治疗抑郁症的研究开始出现,这为抗糖尿病药物作为治疗抑郁症的新选择打开了新的视野。杜拉鲁肽已被批准作为治疗2型糖尿病(T2DM)的药物。因此,我们的工作范围是通过深入研究胰高血糖素样肽-1受体和cAMP/PKA信号通路来研究杜拉鲁肽对放纵性抑郁症的作用。材料与方法将80只小鼠分为两组;有和没有慢性社会失败应激诱导的两组。每组又分为两个子集;第一组用生理盐水治疗42 天,另一组用生理盐水治疗20 天,然后用杜拉鲁肽(0.6 mg/kg/周)治疗4周。主要发现:scsds组的社会交往率和蔗糖消耗量均有所降低。与对照组相比,在高架迷宫测试中,他们在张开的手臂上花的探索时间更少,在封闭的手臂上花的探索时间更多。此外,CSDS组NOD样受体蛋白-3的表达更高,这解释了炎症生物标志物(IL-1β、IL-18、IL-6和TNF-α)的升高以及GLP-1R、cAMP/PKA水平的降低。杜拉鲁肽通过增强GLP-1R/cAMP/PKA通路显著逆转上述参数。lrp3炎性体激活加速抑郁。杜拉鲁肽激活GLP-1R/cAMP/PKA通路,因此提供了一种新的治疗干预来抑制抑郁症。
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引用次数: 1
Cobots: Designing in Safety 协作机器人:安全设计
Pub Date : 2023-03-01 DOI: 10.12968/s0261-2097(23)60463-0
Cobots have lowered the barriers to automation, but must still be operated safely – something that presents a range of different challenges.
协作机器人降低了自动化的门槛,但仍然必须安全操作,这带来了一系列不同的挑战。
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引用次数: 0
ABB Unveils New Cobot
Pub Date : 2023-03-01 DOI: 10.12968/s0261-2097(23)60468-x
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引用次数: 0
Firm Nails Diabetes Screening 糖尿病筛查
Pub Date : 2023-03-01 DOI: 10.12968/s0261-2097(23)60458-7
A novel, non-invasive diabetes screening device has met primary endpoints in two clinical investigations
一种新型的非侵入性糖尿病筛查设备在两项临床研究中达到了主要终点
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引用次数: 0
Ginsenoside Rh1 ameliorates the asthma and allergic inflammation via inhibiting Akt, MAPK, and NF-κB signaling pathways in vitro and in vivo. 人参皂苷Rh1通过抑制Akt、MAPK和NF-κB信号通路改善哮喘和变应性炎症。
Pub Date : 2023-03-01 DOI: 10.2139/ssrn.4333539
Yujin Jin, Warisraporn Tangchang, Oh Seong Kwon, Ji-Yun Lee, K. Heo, H. Son
AIMSOverproduction of pro-inflammatory cytokines and its-mediated immune cell infiltration play a crucial role in asthma progression. In this study, we investigated the role of ginsenoside Rh1 (Rh1) in ovalbumin (OVA)/lipopolysaccharide (LPS)-induced allergic asthma both in vitro and in vivo.MATERIALS AND MAIN METHODSThe phorbol ester (PMA) and LPS were used to induce inflammation in lung airway cells and macrophage activation, respectively. Western blotting, quantitative reverse transcription-PCR, and immunofluorescence (IF) assays were performed to elucidate the underlying molecular mechanisms. To evaluating the effects of Rh1 in vivo, OVA and LPS were used to establish allergic asthma models.KEY FINDINGSRh1 significantly suppressed PMA-induced lung inflammation and macrophage activation by suppressing pro-inflammatory cytokines (TNF-α, IL-1β, MCP-1), ICMA-1, and matrix metallopeptidase 9 (MMP9) in A549 cells. Rh1 abolished the PMA-induced inflammation by suppressing MAPK, Akt, and NF-κB p65. Pretreatment with Rh1 blocked PMA-mediated translocation of NF-κB, a key marker of pro-inflammatory cytokine release, into the nucleus. Similar to PMA-induced lung inflammation, Rh1 suppressed LPS-induced macrophage activation by suppressing NF-κB p65 activation and inducible nitric oxide synthase protein and mRNA expression. Consistent with in vitro data, LPS injection enhanced the number of immune cells induced by OVA in bronchoalveolar lavage fluid, whereas 20 mg/kg Rh1 significantly decreased OVA/LPS-mediated immune cell induction. In addition, Rh1 inhibited eosinophil, macrophage, and neutrophil maturation through by IL-4 and OVA-specific IgE production.SIGNIFICANCERh1 protects against OVA/LPS-induced allergic asthma by suppressing immune cell infiltration by blocking the activation of MAPK, Akt, and NF-κB signaling pathways.
促炎细胞因子的产生及其介导的免疫细胞浸润在哮喘进展中起着至关重要的作用。本研究在体外和体内研究了人参皂苷Rh1 (Rh1)在卵白蛋白(OVA)/脂多糖(LPS)诱导的过敏性哮喘中的作用。材料与主要方法采用脂质体(phopbol ester, PMA)和脂多糖(LPS)分别诱导肺气道细胞炎症和巨噬细胞活化。采用Western blotting、定量逆转录pcr和免疫荧光(IF)分析来阐明潜在的分子机制。为了评价Rh1在体内的作用,采用OVA和LPS建立过敏性哮喘模型。主要发现srh1通过抑制A549细胞的促炎因子(TNF-α、IL-1β、MCP-1)、ICMA-1和基质金属肽酶9 (MMP9),显著抑制pma诱导的肺部炎症和巨噬细胞活化。Rh1通过抑制MAPK、Akt和NF-κB p65来消除pma诱导的炎症。预处理Rh1阻断pma介导的NF-κB易位进入细胞核,NF-κB是促炎细胞因子释放的关键标志。与pma诱导的肺部炎症类似,Rh1通过抑制NF-κB p65激活、诱导型一氧化氮合酶蛋白和mRNA表达来抑制lps诱导的巨噬细胞活化。与体外实验结果一致,LPS可增加支气管肺泡灌洗液中OVA诱导的免疫细胞数量,而20 mg/kg Rh1可显著降低OVA/LPS介导的免疫细胞诱导。此外,Rh1通过IL-4和ova特异性IgE的产生抑制嗜酸性粒细胞、巨噬细胞和中性粒细胞的成熟。意义:通过阻断MAPK、Akt和NF-κB信号通路的激活,抑制免疫细胞浸润,从而抑制OVA/ lps诱导的过敏性哮喘。
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引用次数: 5
Coffee Time Challenge 咖啡时间挑战
Pub Date : 2023-03-01 DOI: 10.12968/s0261-2097(23)60454-x
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引用次数: 0
LncRNA HHIP-AS1 suppresses lung squamous cell carcinoma by stabilizing HHIP mRNA. LncRNA HHIP- as1通过稳定HHIP mRNA抑制肺鳞癌。
Pub Date : 2023-03-01 DOI: 10.2139/ssrn.4333540
Zheyu Hu, Yixian Liu, Jin Tang, Renru Luo, Jiajia Qin, Zexun Mo, Jianjiang Xie, Xuan Jiang, Shuquan Wei, Chuwen Lin
AIMSLung squamous cell carcinoma (LUSC) causes over 400,000 deaths annually, yet it lacks targeted therapy. A major antagonist of Hedgehog pathway, HHIP (Hedgehog Interacting Protein) plays an important role in LUSC; however, the regulatory mechanism remains unclear. Long non-coding RNA HHIP-AS1 plays suppressive or promotive roles in different cancers, but its role in LUSC remains unknown. This manuscript is to investigate regulatory mechanism of HHIP and the role of HHIP-AS1 in LUSC.MAIN METHODSPrecision-cut lung slices (PCLS) from human LUSC samples are cultured to mimic LUSC growth. Overexpression and knockdown in multiple LUSC cell lines and PCLS are achieved by lentivirus infection. Transcriptome profile and lung cancer activity are evaluated by RNA-sequencing, immunostaining and CCK8 assay etc. KEY FINDINGS: HHIP is regulated independently of Hh pathway in LUSC. Additionally, downregulation of HHIP-AS1 is associated with poor prognosis. Consistently, HHIP-AS1 inhibits LUSC growth by suppressing cell proliferation and migration. Transcriptome profiling of HHIP-AS1 knockdown (KD) cells uncovered HHIP downregulation. Interestingly, a comparison between the transcriptomes of HHIP-AS1 KD or HHIP KD cells manifested high similarity. Subsequently it's confirmed that HHIP-AS1 regulates HHIP in LUSC cells. Notably, HHIP-AS1 regulation on LUSC growth is achieved through stabilizing HHIP mRNA rather than regulating MIR-153-3P/PCDHGA9 or MIR-425-5P/DNYC1I2. Finally, it's confirmed in PCLS from human LUSC samples that HHIP-AS1 suppresses LUSC via regulating HHIP mRNA.SIGNIFICANCEThis study uncovers HHIP-AS1 as a novel tumor suppressor in LUSC and provides new insights into the molecular regulation of LUSC, which will help developing new therapeutic strategies.
AIMSLung鳞状细胞癌(LUSC)每年导致40多万人死亡,但缺乏靶向治疗。HHIP (Hedgehog interaction Protein)是Hedgehog通路的主要拮抗剂,在LUSC中起重要作用;然而,监管机制仍不清楚。长链非编码RNA HHIP-AS1在不同的癌症中发挥抑制或促进作用,但其在LUSC中的作用尚不清楚。本文旨在探讨HHIP的调控机制以及HHIP- as1在LUSC中的作用。主要方法利用人LUSC的精确肺切片(PCLS)模拟LUSC的生长。通过慢病毒感染,在多种LUSC细胞系和PCLS中实现过表达和敲低。通过rna测序、免疫染色和CCK8检测等方法评估转录组谱和肺癌活性。主要发现:在LUSC中,HHIP独立于Hh通路调节。此外,HHIP-AS1的下调与预后不良有关。一致地,HHIP-AS1通过抑制细胞增殖和迁移来抑制LUSC生长。HHIP- as1敲低(KD)细胞的转录组分析揭示了HHIP下调。有趣的是,HHIP- as1 KD细胞和HHIP- KD细胞的转录组比较显示出高度的相似性。随后证实HHIP- as1在LUSC细胞中调控HHIP。值得注意的是,HHIP- as1对LUSC生长的调节是通过稳定HHIP mRNA实现的,而不是通过调节MIR-153-3P/PCDHGA9或MIR-425-5P/DNYC1I2实现的。最后,在来自人LUSC样本的PCLS中证实,HHIP- as1通过调节HHIP mRNA抑制LUSC。本研究揭示了HHIP-AS1在LUSC中作为一种新的肿瘤抑制因子,为LUSC的分子调控提供了新的见解,有助于开发新的治疗策略。
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引用次数: 0
Collagen matricryptin promotes cardiac function by mediating scar formation. 胶原基质蛋白通过介导瘢痕形成促进心脏功能。
Pub Date : 2023-03-01 DOI: 10.2139/ssrn.4327441
Gabriel A. Grilo, Sirin N. Cakir, P. Shaver, R. Iyer, K. Whitehead, J. McClung, A. Vahdati, L. E. de Castro Brás
AIMSA peptide mimetic of a collagen-derived matricryptin (p1159) was shown to reduce left ventricular (LV) dilation and fibrosis after 7 days delivery in a mouse model of myocardial infarction (MI). This suggested p1159 long-term treatment post-MI could have beneficial effects and reduce/prevent adverse LV remodeling. This study aimed to test the potential of p1159 to reduce adverse cardiac remodeling in a chronic MI model and to elucidate p1159 mode-of-action.MATERIALS AND METHODSUsing a permanent occlusion MI rodent model, animals received p1159 or vehicle solution up to 28 days. We assessed peptide treatment effects on scar composition and structure and on systolic function. To assess peptide effects on scar vascularization, a cohort of mice were injected with Griffonia simplicifolia isolectin-B4. To investigate p1159 mode-of-action, LV fibroblasts from naïve animals were treated with increasing doses of p1159.KEY FINDINGSMatricryptin p1159 significantly improved systolic function post-MI (2-fold greater EF compared to controls) by reducing left ventricular dilation and inducing the formation of a compliant and organized infarct scar, which promoted LV contractility and preserved the structural integrity of the heart. Specifically, infarcted scars from p1159-treated animals displayed collagen fibers aligned parallel to the epicardium, to resist circumferential stretching, with reduced levels of cross-linking, and improved tissue perfusion. In addition, we found that p1159 increases cardiac fibroblast migration by activating RhoA pathways via the membrane receptor integrin α4.SIGNIFICANCEOur data indicate p1159 treatment reduced adverse LV remodeling post-MI by modulating the deposition, arrangement, and perfusion of the fibrotic scar.
在心肌梗死(MI)小鼠模型中,胶原来源的基质蛋白(p1159)的AIMSA肽模拟物在7 天后显示可减少左心室(LV)扩张和纤维化。这表明心肌梗死后长期治疗p1159可产生有益作用并减少/预防不良左室重构。本研究旨在测试p1159在慢性心肌梗死模型中减少不良心脏重构的潜力,并阐明p1159的作用方式。材料与方法采用永久性闭塞性心肌梗死啮齿类动物模型,动物接受p1159或载药溶液治疗28 天。我们评估了肽治疗对疤痕组成和结构以及收缩功能的影响。为了评估肽对疤痕血管形成的影响,我们给一组小鼠注射了单纯Griffonia isolectin-B4。为了研究p1159的作用模式,用增加剂量的p1159处理naïve动物的LV成纤维细胞。主要发现:matricryptin p1159通过降低左室扩张和诱导形成顺从和有组织的梗死疤痕,促进左室收缩并保持心脏结构完整性,显著改善心肌梗死后的收缩功能(EF是对照组的2倍)。具体来说,p1159治疗动物的梗死疤痕显示胶原纤维平行于心外膜排列,以抵抗周向拉伸,交联水平降低,组织灌注改善。此外,我们发现p1159通过膜受体整合素α4激活RhoA通路,从而增加心脏成纤维细胞的迁移。我们的数据表明p1159治疗通过调节纤维化疤痕的沉积、排列和灌注来减少心肌梗死后不良左室重塑。
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引用次数: 2
Plain Bearings Cut Lubricant Use 滑动轴承切割润滑剂的使用
Pub Date : 2023-03-01 DOI: 10.12968/s0261-2097(23)60469-1
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引用次数: 0
A Cut Above 高高在上
Pub Date : 2023-03-01 DOI: 10.12968/s0261-2097(23)60456-3
Advances in sensor and other technologies could help to revolutionise the market for robotic lawn mowers, with one recent innovation leading the way.
传感器和其他技术的进步可能有助于彻底改变机器人割草机的市场,最近的一项创新引领了这一潮流。
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引用次数: 0
期刊
EUREKA: Life Sciences
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