CD, Cluster of differentiation

Cd,分化集群
  • 文章类型: Case Reports
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  • 文章类型: Journal Article
    人类暴露于环境化学物质的一种途径是口服摄取。这主要适用于可能从食品包装材料中浸出的化学物质,如双酚和邻苯二甲酸酯。摄入后,这些化合物沿着肠道运输,从那里它们可以被吸收到血液中或分布到粘膜部位。在粘膜部位,粘膜免疫细胞和血液中的外周免疫细胞可能暴露于这些可能调节免疫细胞功能的化学物质。在本研究中,我们在体外研究了三种常见的双酚和两种邻苯二甲酸酯对粘膜相关的不变T(MAIT)细胞的影响,人类肠粘膜和外周血中常见的免疫细胞类型。所有化合物在所选浓度下是非细胞毒性的。如通过流式细胞术分析所见,MAIT细胞活化仅受到轻微影响。邻苯二甲酸酯不影响MAIT细胞基因表达,而双酚暴露引起了显著的变化。转录变化发生在25%的BPA基因中,BPF为22%,BPS为8%。所有双酚下调CCND2、CCL20、GZMB和IRF4的表达,表明对MAIT细胞效应子功能的影响。Further,BPA和BPF在参与细胞应激反应的调节基因中显示出高度重叠,激活信号和效应子功能表明BPF可能不是BPA的安全替代品。
    One route of human exposure to environmental chemicals is oral uptake. This is primarily true for chemicals that may leach from food packaging materials, such as bisphenols and phthalate esters. Upon ingestion, these compounds are transported along the intestinal tract, from where they can be taken up into the blood stream or distributed to mucosal sites. At mucosal sites, mucosal immune cells and in the blood stream peripheral immune cells may be exposed to these chemicals potentially modulating immune cell functions. In the present study, we investigated the impact of three common bisphenols and two phthalate esters on mucosal-associated invariant T (MAIT) cells in vitro, a frequent immune cell type in the intestinal mucosae and peripheral blood of humans. All compounds were non-cytotoxic at the chosen concentrations. MAIT cell activation was only slightly affected as seen by flow cytometric analysis. Phthalate esters did not affect MAIT cell gene expression, while bisphenol-exposure induced significant changes. Transcriptional changes occurred in ∼ 25 % of genes for BPA, ∼ 22 % for BPF and ∼ 8 % for BPS. All bisphenols down-modulated expression of CCND2, CCL20, GZMB and IRF4, indicating an effect on MAIT cell effector function. Further, BPA and BPF showed a high overlap in modulated genes involved in cellular stress response, activation signaling and effector function suggesting that BPF may not be safe substitute for BPA.
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  • 文章类型: Case Reports
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  • 文章类型: Case Reports
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  • 文章类型: Case Reports
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  • 文章类型: Case Reports
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  • 文章类型: Journal Article
    UNASSIGNED:关于心脏手术后心包腔发生的炎症反应的数据很少。这项研究提供了对局部术后炎症反应的全面评估。
    未经授权:43例患者接受了心脏切开术,抽取天然心包液,并与体外循环后4、24和48小时收集的术后心包流出物进行比较。流式细胞术用于确定特异性免疫细胞的水平和比例。还探测了样品中炎症细胞因子的浓度,基质金属蛋白酶(MMPs),和金属蛋白酶(TIMPs)的组织抑制剂。
    未经批准:术前,心包间隙主要含有巨噬细胞和T细胞。然而,术后心包间隙主要由中性粒细胞组成,几乎占免疫细胞的80%,并在24小时达到峰值。当比较手术方法时,微创手术与术后4小时心包间隙中性粒细胞减少相关。对炎症介质的心包内浓度的分析显示,白细胞介素6,MMP-9和TIMP-1在手术后最高。随着时间的推移,MMP-9浓度显著降低,而TIMP-1水平升高,导致手术后MMP:TIMP的比率显着降低,提示活跃的炎症过程可能影响细胞外基质重塑。
    未经证实:这些结果表明心脏手术引起心包空间免疫细胞谱的深刻改变。定义驱动心包特异性术后炎症过程的细胞和分子介质可以允许靶向治疗以减少免疫介导的并发症。
    UNASSIGNED: There is a paucity of data on the inflammatory response that takes place in the pericardial space after cardiac surgery. This study provides a comprehensive assessment of the local postoperative inflammatory response.
    UNASSIGNED: Forty-three patients underwent cardiotomy, where native pericardial fluid was aspirated and compared with postoperative pericardial effluent collected at 4, 24, and 48 hours\' postcardiopulmonary bypass. Flow cytometry was used to define the levels and proportions of specific immune cells. Samples were also probed for concentrations of inflammatory cytokines, matrix metalloproteinases (MMPs), and tissue inhibitors of metalloproteinases (TIMPs).
    UNASSIGNED: Preoperatively, the pericardial space mainly contains macrophages and T cells. However, the postsurgical pericardial space was populated predominately by neutrophils, which constituted almost 80% of immune cells present, and peaked at 24 hours. When surgical approaches were compared, minimally invasive surgery was associated with fewer neutrophils in the pericardial space at 4 hours\' postsurgery. Analysis of the intrapericardial concentrations of inflammatory mediators showed interleukin-6, MMP-9, and TIMP-1 to be highest postsurgery. Over time, MMP-9 concentrations decreased significantly, whereas TIMP-1 levels increased, resulting in a significant reduction of the ratio of MMP:TIMP after surgery, suggesting that active inflammatory processes may influence extracellular matrix remodeling.
    UNASSIGNED: These results show that cardiac surgery elicits profound alterations in the immune cell profile in the pericardial space. Defining the cellular and molecular mediators that drive pericardial-specific postoperative inflammatory processes may allow for targeted therapies to reduce immune-mediated complications.
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  • 文章类型: Journal Article
    脱发,或者脱发,与几种心理社会和医学合并症有关,它仍然是个人和社会的经济负担。脱发可归因于多种机制,并具有多因素倾向,和现有的常规医疗干预措施有几个局限性。因此,目前正在探索再生医学中脱发的几种治疗策略,随着越来越多的证据表明间充质干细胞(MSC)植入,MSC来源的分泌组治疗,血液来源的富含血小板的血浆疗法是潜在的治疗选择。在这次审查中,我们搜查了Cochrane图书馆,MEDLINE(PubMed),EMBASE,和Scopus使用各种术语组合,如“干细胞,\"\"脱发,\"\"脱发,\"\"雄激素性脱发,\"\"男性型脱发,\"\"女性型脱发,\"\"再生头发的生长,细胞疗法,间充质干细胞,“\”MSC衍生的细胞外囊泡,\"\"MSC衍生的外泌体,“和“富血小板血浆”,并总结了最有希望的脱发再生治疗方法。此外,讨论了提高疗效的进一步机会和促进临床应用的创新策略。
    Hair loss, or alopecia, is associated with several psychosocial and medical comorbidities, and it remains an economic burden to individuals and the society. Alopecia is attributable to varied mechanisms and features a multifactorial predisposition, and the available conventional medical interventions have several limitations. Thus, several therapeutic strategies for alopecia in regenerative medicine are currently being explored, with increasing evidence suggesting that mesenchymal stem cell (MSC) implantation, MSC-derived secretome treatment, and blood-derived platelet-rich plasma therapies are potential treatment options. In this review, we searched the Cochrane Library, MEDLINE (PubMed), EMBASE, and Scopus using various combinations of terms, such as \"stem cell,\" \"alopecia,\" \"hair loss,\" \"Androgenetic alopecia,\" \"male-pattern hair loss,\" \"female-pattern hair loss,\" \"regenerative hair growth,\" \"cell therapy,\" \"mesenchymal stem cells,\" \"MSC-derived extracellular vesicles,\" \"MSC-derived exosomes,\" and \"platelet-rich plasma\" and summarized the most promising regenerative treatments for alopecia. Moreover, further opportunities of improving efficacy and innovative strategies for promoting clinical application were discussed.
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  • 文章类型: Journal Article
    过度饮酒是一个全球性的医疗保健问题,具有巨大的社会,经济,和临床后果。虽然慢性,大量饮酒会导致身体几乎每个组织的结构损伤和/或破坏正常器官功能,肝脏受到的损害最大。这主要是因为肝脏是第一个通过门静脉循环从胃肠道吸收酒精的,因为肝脏是乙醇代谢的主要部位。酒精引起的损伤仍然是肝脏最普遍的疾病之一,也是肝脏疾病死亡或移植的主要原因。尽管对这种疾病的病理生理学进行了广泛的研究,目前还没有靶向治疗.鉴于酒精相关性肝病发病机制的多因素机制,可以想象,需要多种治疗方案来治疗该疾病谱中的不同阶段。
    Excessive alcohol consumption is a global healthcare problem with enormous social, economic, and clinical consequences. While chronic, heavy alcohol consumption causes structural damage and/or disrupts normal organ function in virtually every tissue of the body, the liver sustains the greatest damage. This is primarily because the liver is the first to see alcohol absorbed from the gastrointestinal tract via the portal circulation and second, because the liver is the principal site of ethanol metabolism. Alcohol-induced damage remains one of the most prevalent disorders of the liver and a leading cause of death or transplantation from liver disease. Despite extensive research on the pathophysiology of this disease, there are still no targeted therapies available. Given the multifactorial mechanisms for alcohol-associated liver disease pathogenesis, it is conceivable that a multitherapeutic regimen is needed to treat different stages in the spectrum of this disease.
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  • 文章类型: Journal Article
    UNASSIGNED:免疫系统的功能是保护宿主免受各种传染病的侵害。这里,我们评估了绿咖啡提取物(GCE)的体外免疫调节作用,并进行了双盲,在明显健康的个体中进行随机和安慰剂对照试验。
    未经授权:我们确定了炎症和免疫标志物的水平和功能。,磷酸化NF-κBp65ser536,趋化性,吞噬作用,TH1/TH2细胞因子和IgG产生。我们还评估了几种免疫学标记,例如总白细胞计数,区分白细胞计数,NK细胞活性,CD4/CD8比值,血清免疫球蛋白,C反应蛋白(CRP)和促炎细胞因子(IL-6和TNF-α)。
    未经证实:GCE显著抑制LPS诱导的NF-κBp65ser536磷酸化,MCP-1诱导趋化性,并显着增强吞噬作用和IgG产生。此外,GCE调节PMA/PHA诱导的TH1/TH2细胞因子产生。临床研究表明,GCE治疗后,NK细胞上CD56和CD16的表达显着增加。GCE在流感疫苗接种前后显着增强了IgA的产生。同样,GCE可显著抑制IL-6、TNF-α和CRP水平。一起,GCE在不同水平上赋予几种有益的免疫调节作用,这归因于宿主中免疫反应的最佳功能。
    未经证实:细胞生物学,临床研究,临床试验。
    UNASSIGNED: The immune system functions to protect the host from a broad array of infectious diseases. Here, we evaluated the in vitro immunomodulatory effects of green coffee extract (GCE), and conducted a double-blinded, randomized and placebo-controlled trial among apparently healthy individuals.
    UNASSIGNED: We determined the levels and functions of inflammatory and immune markers viz., phospho-NF-κB p65 ser536, chemotaxis, phagocytosis, TH1/TH2 cytokines and IgG production. We also evaluated several immunological markers such as total leukocyte counts, differential leukocyte counts, NK cell activity, CD4/CD8 ratio, serum immunoglobulin, C-reactive protein (CRP) and pro-inflammatory cytokines (IL-6 and TNF-α).
    UNASSIGNED: GCE significantly inhibited LPS-induced NF-κB p65 ser536 phosphorylation, MCP-1-induced chemotaxis and significantly enhanced phagocytosis and IgG production. In addition, GCE modulated PMA/PHA-induced TH1/TH2 cytokine production. Clinical investigations suggested that the expression of CD56 and CD16 was markedly augmented on NK cells following GCE treatment. GCE significantly enhanced IgA production before and after influenza vaccination. Similarly, IL-6, TNF-α and CRP levels were significantly inhibited by GCE. Together, GCE confers several salubrious immunomodulatory effects at different levels attributing to optimal functioning of immune responses in the host.
    UNASSIGNED: Cell biology, Clinical study, Clinical Trial.
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