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  • 文章类型: Journal Article
    肿瘤学和心理健康之间存在相互作用,导致癌症患者中精神障碍的患病率很高。在针对癌症细节开发的几种干预措施中,协作护理因其功效而被指出。这个观点深入研究了协作护理模式的功效,聚焦文化知情战略,旨在协调精神和身体健康干预措施,以增强与癌症作斗争的个体的整体福祉和韧性。我们讨论的中心是一个引人注目的Raliat案例插图,一名被诊断患有卵巢癌的患者,其叙述体现了癌症患者面临的多方面挑战,包括污名,心理困扰,社会孤立。Raliat的故事阐明了文化信仰对患者体验的深刻影响,以及敏感的重要性,尊重文化背景的整体护理方法。通过这个镜头,我们的分析表明,通过协作护理解决情绪和情境压力源可以显着减少氧化应激,可能减缓癌症和伴随的精神健康障碍的进展。我们主张将心理健康服务纳入肿瘤护理,借鉴案例插图,主张通过采用经过验证的协作护理模式来促进这种合并的政策。最后,我们呼吁公众教育,以减少癌症的耻辱,改善社会结果,强调使用文化知情的PACER(物理,情感,认知,环境,和关系)为癌症患者及其家人提供全面护理的策略。
    There is an interplay between oncology and mental health, resulting in a high prevalence of mental disorders among cancer patients. Out of the several interventions developed to target cancer specifics, collaborative care is indicated due to its efficacy. The perspective delves into the efficacy of collaborative care models, spotlighting a culturally informed strategy designed to harmonize mental and physical health interventions to bolster the overall wellbeing and resilience of individuals battling cancer. Central to our discussion is a compelling case vignette of Raliat, a patient diagnosed with ovarian cancer whose narrative exemplifies the multifaceted challenges cancer patients face, including stigma, psychological distress, and social isolation. Raliat\'s story illuminates the profound impact of cultural beliefs on patient experiences and the critical importance of a sensitive, holistic approach to care that respects cultural contexts. Through this lens, our analysis reveals that addressing emotional and situational stressors through collaborative care can significantly reduce oxidative stress, potentially decelerating the progression of both cancer and accompanying mental health disorders. We advocate for integrating mental health services into oncological care, drawing on the case vignette to argue for policies that facilitate such merger by employing validated collaborative care models. We conclude with a call for public education to diminish cancer stigma and improve social outcomes, emphasizing the use of a culture-informed PACER (physical, affective, cognitive, environmental, and relationship) strategy in providing comprehensive care for cancer patients and their families.
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  • 文章类型: Journal Article
    对受试者有什么了解?:非自愿拘留是一项立法权,允许人们违背自己的意愿进行强制性的心理健康评估,并且对患者来说是限制性和创伤性的过程。虽然有一些文献研究了警察/救护车和精神卫生工作者的共同反应模型,关于是否降低精神病患者非自愿拘留率的结论好坏参半。警察,救护车,临床医生早期响应(PACER)模型是三响应心理健康危机响应小组的一个例子,其作用是响应和评估被认为正在经历心理健康危机的人。与标准的警察和/或救护车响应相比,几乎没有文献可以确定PACER三响应模型是否减少了非自愿拘留事件。这篇论文对现有知识有什么帮助?:这篇论文描述了由PACER团队评估的患者的结果,与由警察或救护车评估的患者进行比较。它表明,PACER可以通过专家心理健康评估来减少不必要的非自愿拘留,以帮助来急救服务的患者。这是研究三响应模型的仅有的两项已发表的研究之一。实践的含义是什么?:这项研究的结果可能会支持卫生和警务政策制定者实施PACER模型作为减少非自愿拘留的手段,减少对急诊科的需求,减少紧急服务对经历心理健康危机的人的反应所花费的时间,并改善患有精神疾病的人的结果。
    背景:非自愿拘留是实施心理健康评估和治疗的一种常见方法;然而,这与不良的患者预后以及高的急诊服务和医院需求有关。
    目的:研究(1)警察、救护车,临床医生,早期反应(PACER)模型,(2)警察或(3)救护车反应和非自愿拘留精神病患者的比率。
    方法:一项回顾性观察研究,使用澳大利亚城市的常规管理数据,在12个月内(2019-2020年)。
    结果:在12个月的时间内,8577人在研究环境中接受了危机心理健康干预。我们观察到被警察非自愿拘留的相对风险增加了18%,被救护车扣留的相对风险增加了640%。PACER团队拘留了他们总演讲的10%,相比之下,警察和救护车分别占12%和74%。PACER颁布的非自愿拘留更有可能转换为拘留后住院(72%),与警察(27%)和救护车(17%)相比。
    结论:与警察和救护车的反应相比,PACER与较低的非自愿拘留率和较高的拘留后住院率相关。
    结论:PACER队列比警察或救护车队列更积极。
    WHAT IS KNOWN ON THE SUBJECT?: Involuntary detention is a legislative power that allows people to be taken against their will for a mandatory mental health assessment and is known to be a restrictive and traumatizing process for patients. While there is some literature examining police/ambulance and mental health worker co-response models, the conclusions are mixed as to whether they reduce rates of involuntary detentions in mentally ill people. The Police, Ambulance, Clinician Early Response (PACER) model is an example of a tri-response mental health crisis response team whose role is to respond and assess people thought to be experiencing a mental health crisis. There is little literature to determine whether PACER tri-response model reduces incidents of involuntary detention when compared with standard police and/or ambulance responses. WHAT THIS PAPER ADDS TO EXISTING KNOWLEDGE?: This paper describes the outcomes of patients assessed by a PACER team, compared with patients who were assessed by police or ambulance. It demonstrates that PACER may reduce unnecessary involuntary detentions through expert mental health assessment for patients coming to emergency services for assistance. It is one of only two published studies examining a tri-response model. WHAT ARE THE IMPLICATIONS FOR PRACTICE?: The results of this study may support health and policing policymakers to implement PACER models as a means of reducing involuntary detentions, reducing demand for emergency departments, reducing time spent by emergency services responding to people experiencing mental health crisis and improving outcomes for people with mental illness.
    UNASSIGNED: BACKGROUND: Involuntary detention is a common method of enforcing mental health assessment and treatment; however, it is associated with poor patient outcomes and high emergency service and hospital demand.
    OBJECTIVE: To examine the association between (1) Police, Ambulance, Clinician, Early Response (PACER) model, (2) police or (3) ambulance response and rates of involuntary detention of mentally ill people.
    METHODS: A retrospective observational study using routine administrative data in an Australian City, over a 12-month period (2019-2020).
    RESULTS: Over a 12-month period, 8577 people received crisis mental health intervention in the study setting. We observed an 18% increase in the relative risk of being involuntarily detained by police, and a 640% increase in the relative risk of being detained by ambulance. The PACER team detained 10% of their total presentations, as compared with 12% by police and 74% by ambulance. Involuntary detentions enacted by PACER were more likely to convert to a post-detention hospitalization (72%), when compared with police (27%) and ambulance (17%).
    CONCLUSIONS: PACER was associated with lower rates of involuntary detention and higher rates of post-detention hospitalization when compared to police and ambulance response.
    CONCLUSIONS: PACER cohort experience more positive outcomes than with police or ambulance cohorts.
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  • 文章类型: Journal Article
    紧急服务经常被要求参加精神卫生事件,并正在寻找创新的方法来改善他们的反应并减轻服务负担。对患有精神疾病的人的非自愿拘留被认为比必要的频率更高,导致急诊室的压力增加,对患者来说往往是一种创伤经历。警察,救护车,临床医生早期反应(PACER)模型于2019年在堪培拉开发,澳大利亚,并寻求通过将心理健康临床医生纳入紧急服务作为流动的心理健康危机应对干预措施来减少非自愿拘留。该协议详细介绍了一项回顾性队列研究,该研究将使用医疗和警察记录检查PACER与非自愿拘留之间的关联,并将结果与标准救护车和警察反应进行比较。我们将使用相对风险和比值比计算来确定被非自愿拘留或从医院转移的概率;我们将描述PACER队列中的患者特征和结果。结果将使用STROBE检查表报告队列研究。该研究未在可公开访问的注册表上注册。
    Emergency services are frequently called to attend mental health incidents and are looking for innovative ways to improve their responses and reduce the burden on services. Involuntary detention of people living with mental illness is considered more frequent than necessary, leading to increased pressure on emergency departments, and is often a traumatic experience for patients. The Police, Ambulance, Clinician Early Response (PACER) model was developed in 2019 in Canberra, Australia, and seeks to reduce involuntary detentions by embedding a mental health clinician into emergency services as a mobile mental health crisis response intervention. This protocol details a retrospective cohort study that will examine the association between PACER and involuntary detentions using medical and police records and compare the results to standard ambulance and police responses. We will use relative risk and odds ratio calculations to determine the probability of being involuntarily detained or diverted from hospital; and we will describe the patient characteristics and outcomes in the PACER cohort. Results will be reported using the STROBE checklist for reporting cohort studies. This study was not registered on a publicly accessible registry.
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  • 文章类型: Journal Article
    根性囊肿的特征在于炎性生物标志物的显著水平的变化。其中,据报道,神经根囊肿组织中的白细胞介素和生长因子被下调。此外,长链非编码RNA是最近发现的非编码RNA分子,可调节各种细胞内刺激以保持稳态平衡。越来越多的证据表明,lncRNAs通过靶向各种炎症生物标志物显著参与炎症的调节。因此,本研究旨在研究炎症相关lncRNAs在神经根囊肿中的基因表达水平,并显示它们在神经根囊肿发生发展中的可能作用。对于这项研究,共纳入25例经放射学和病理证实的根性囊肿患者.为了确定非编码RNA的表达水平,使用实时qPCR。作为当前研究的结果,与对照组织样本相比,发现PACER和THRIL在根性囊肿组织中的表达水平显着升高。然而,MALAT1ANRIL,与对照组织样品相比,神经根囊肿组织中的NEAT1表达水平没有显着改变。总之,长链非编码RNA,PACER和THRIL,通过在炎症过程中获得分子变化,似乎具有重要的病理生理作用,并且可能参与了神经根囊肿的发展和形成。
    Radicular cysts are characterized by significant levels of changes in inflammatory biomarkers. Among them, interleukins and growth factors have been reported to be deregulated in radicular cyst tissues. Moreover, long non-coding RNAs are recently discovered non-coding RNA molecules that regulate various intracellular stimuli to keep homeostasis in balance. A growing body of evidence suggests that lncRNAs are significantly involved in the regulation of inflammation by targeting various inflammatory biomarkers. Accordingly, the present study was aimed to investigate the gene expression levels of inflammation-related lncRNAs in radicular cysts and show their possible roles in the development of radicular cysts. For the study, a total of 25 patients with a radiologically and pathologically confirmed radicular cyst were enrolled. For the determination of non-coding RNA expression levels, real-time qPCR was used. As a result of the current study, expression levels of PACER and THRIL were found to be significantly elevated in radicular cyst tissues compared to control tissue samples. However, MALAT1, ANRIL, and NEAT1 expression levels were not significantly altered in radicular cyst tissues compared to control tissue samples. In conclusion, long non-coding RNAs, PACER and THRIL, seem to have significant pathophysiological roles by acquiring molecular changes during inflammation and might be involved in the development and formation of radicular cysts.
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  • 文章类型: Journal Article
    背景:坏死是坏死的受控形式,在不存在凋亡信号的情况下可以刺激坏死。坏死可由DR家族配体和触发DR家族配体活化的各种细胞内和细胞外刺激诱导。坏死抑制素,它们是特定的RIP1拮抗剂,通过抑制RIP1激酶预防坏死性凋亡,允许细胞在DR配体存在下存活和繁殖。此外,有越来越多的证据表明,长链非编码RNA(lncRNA)分子在细胞死亡过程中完成重要功能,如凋亡,自噬,焦亡,和坏死。因此,在这里,我们旨在破译参与控制和维持坏死性凋亡信号传导的lncRNAs。
    结果:结肠癌细胞系,HT-29和HCT-116用于研究。对于坏死信号的化学调节,5-氟尿嘧啶,使用TNF-α和/或Necrostatin-1。通过定量实时PCR测定基因表达水平。值得注意的是,lncRNAP50相关的COX-2基因外RNA(PACER)被鉴定为在坏死性凋亡诱导的结肠癌中受到抑制,而当凋亡抑制时,PACER的表达恢复。此外,在HCT-116结肠癌细胞中没有观察到可检测的变化,因为这些细胞缺乏RIP3激酶的表达。
    结论:总的来说,目前的研究结果清楚地表明,PACER在控制坏死细胞死亡信号通路方面具有关键的调节作用。值得注意的是,PACER的肿瘤启动子活性可能是癌细胞中坏死死亡信号缺乏的原因。此外,RIP3激酶似乎是PACER相关坏死性凋亡的重要组成部分。
    BACKGROUND: Necroptosis is a controlled form of necrosis which can be stimulated in cases where the apoptosis signal is absent. Necroptosis can be induced by DR family ligands and by various intracellular and extracellular stimuli that triggers the activation of DR family ligands. Necrostatins, which are specific RIP1 antagonists, prevent necroptosis by inhibiting RIP1 kinase, allowing survival and propagation of cells in the presence of DR ligands. Furthermore, there is a mounting evidence that long non-coding RNA (lncRNA) molecules accomplish vital functions in cell death processes such as apoptosis, autophagy, pyroptosis, and necroptosis. Accordingly, here we aimed to decipher the lncRNAs that are involved in the control and maintenance of necroptosis signaling.
    RESULTS: Colon cancer cell lines, HT-29 and HCT-116 were used for the study. For the chemical modulation of necroptosis signaling, 5-Fluorouracil, TNF-α and/or Necrostatin-1 were used. Gene expression levels were determined by quantitative real-time PCR. Remarkably, lncRNA P50-associated COX-2 extragenic RNA (PACER) was identified to be suppressed in necroptosis-induced colon cancers, whereas the expression of PACER was restored when necroptosis was suppressed. In addition, no detectable change was observed in HCT-116 colon cancer cells, as these cells lack the expression of RIP3 kinase.
    CONCLUSIONS: Collectively, current findings clearly imply that PACER have key regulatory roles in the control of necroptotic cell death signaling circuitry. Notably, the tumor promoter activity of PACER might be responsible for the lack of necroptotic death signal in cancer cells. Also, RIP3 kinase seems to be essential component in PACER-associated necroptosis.
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  • 文章类型: Journal Article
    双相情感障碍(BD)是一种严重的疾病,其特征是躁狂症和抑郁症。尽管在双相情感障碍的神经生物学方面取得了进展,该病的确切病因尚不清楚.有证据表明炎症与双相情感障碍有关。COX-2和NF-κB是炎症途径中的两个关键介质。长链非编码RNA(lncRNAs)是一类新的非编码RNA,发挥广泛的作用,特别是在发育和维持正常的大脑功能方面。两种称为PACER和NKILA的lncRNAs控制COX-2和NF-κB基因的表达,分别。在这项研究中,PACER和NKILAlncRNAs的表达水平,还有,采用实时荧光定量PCR方法检测了50例双相情感障碍患者和50例健康人的COX-2和NF-κB基因。与健康对照相比,BD患者中NKILA和COX2的表达水平显著降低。与男性健康受试者相比,NKILA和PACER表达的这种显著下调仅在患有BD的男性患者中观察到。此外,根据ROC曲线的结果,NKILA和COX2的曲线下面积值分别为0.68和0.52.因此,NKILA基因可以被认为是生物标志物。通过检查基因之间的成对相关程度,所有基因之间均呈显著正相关。一起来看,这些结果揭示了NKILA和PACERlncRNAs在BD发病机制中的作用。
    Bipolar disorder (BD) is a severe condition characterized by periods of mania and depression. Despite advances in the neurobiology of bipolar disorder, the exact etiology of the disease remains unclear. There is evidence that Inflammation is associated with bipolar disorder. COX-2 and NF-κB are two critical mediators in the inflammatory pathways. Long non-coding RNAs (lncRNAs) are a new class of non-coding RNAs that play a wide range of roles, especially in developing and maintaining normal brain functions. Two lncRNAs called PACER and NKILA control the expression of COX-2 and NF-κB genes, respectively. In this study, Expression levels of PACER and NKILA lncRNAs, as well as, COX-2 and NF-κB genes were measured in fifty patients with bipolar disorder and 50 healthy individuals by real-time PCR. Expression levels of NKILA and COX2 were considerably reduced in BD patients compared with healthy controls. Such significant downregulation in the expression of NKILA and PACER was only observed in male patients with BD compared with male healthy subjects. Also, according to the results of the ROC curve, the area under curve values for NKILA and COX2 were 0.68 and 0.52 respectively. Consequently, the NKILA gene could be considered a biomarker. By examining the degree of pairwise correlation between genes, all genes had a significant positive correlation with each other. Taken together, these results revealed a function for NKILA and PACER lncRNAs in the pathogenesis of BD.
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  • 文章类型: Journal Article
    父母在童年时期的情感社会化和情绪调节的发展中起着至关重要的作用。衡量父母如何帮助儿童情绪调节的工具非常有限。父母对儿童情绪调节的帮助(PACER)问卷是为此目的开发的一种新颖的量表,具有出色的心理测量特性。这项研究的目的是使PACER适应土耳其语,并研究其在土耳其文化背景下的心理测量特性。这些数据来自700名父母,他们有17岁至17岁的孩子。除了PACER,参与者填写了一些关于他们自己的信仰和行为的量表,也是他们孩子的心理症状。我们在土耳其样本中确认了PACER的原始十因子结构,并且测量不变性支持PACER的跨子组结构。因素的内部一致性很高;然而,测试-重测可靠性低于预期。适应不良情绪调节策略的因素(例如,沉思,表现性抑制,回避)与父母自身的情绪调节缺陷呈正相关,症状,和孩子的症状,而其他人(例如,重新评估,解决问题)与它们呈负相关。总的来说,我们的研究结果表明,土耳其版本的PACER是一种在心理上有效和可靠的测量方法,可以评估父母如何支持子女调节情绪.我们认为,这种适应使量表可以用于发展和临床心理学研究,并将为跨文化研究铺平道路。
    Parents play a critical role in emotional socialization and the development of emotion regulation during childhood. The tools to measure how parents assist children\'s emotion regulation are very limited. The Parental Assistance with Child Emotion Regulation (PACER) Questionnaire is a novel scale developed for this purpose with excellent psychometric properties. The aim of this study is to adapt the PACER to Turkish and investigate its psychometric properties in the Turkish cultural setting. The data were collected from 700 parents who have children aged birth to 17 years. In addition to the PACER, participants filled out some scales about their own beliefs and behaviors, also their children\'s psychological symptoms. We confirmed the original ten-factor structures of the PACER in a Turkish sample and the measurement invariance supported the PACER\'s structure across subgroups. The high internal consistencies of factors were achieved; however, the test-retest reliability was lower than expected. The factors of maladaptive emotion regulation strategies (e.g., rumination, expressive suppression, avoidance) were positively associated with parents\' own emotion regulation deficit, symptoms, and child\'s symptoms, while others (e.g., reappraisal, problem-solving) were negatively associated with them. Overall, our results suggest that the Turkish version of the PACER is a psychometrically valid and reliable measurement to assess how parents support their children to regulate their emotions. We believe that this adaptation allows the scale to be used in developmental and clinical psychology studies and will pave the way for cross-cultural studies.
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  • 文章类型: Journal Article
    背景:儿童体重状况与健康呈负相关,但是对健身领域之间的这种关系知之甚少。这项研究检查了体重状态和健身领域之间的纵向关联,多样化的儿童样本。方法:数据来自纽约市Fitnessgram(2010-2011年至2017-2018年)。每年收集身高和体重,并使用疾病控制和预防中心的生长图转换为体重状态。有氧能力,肌肉力量,和耐力根据体能表现测试的年龄和性别标准化z评分进行测量。运行重复测量多级模型,测试体重状态与1年滞后健身领域之间的关联。结果:样本包括917,554名儿童(男性占51.8%,39.3%西班牙裔,29.9%非西班牙裔黑人,13.9%,4.7%,和1.7%的第一类,II,和III肥胖,分别)。对于每个健身领域,在所有人口统计类别中,健身分数随着体重状态的增加而下降,在肥胖最严重的儿童中观察到的健康评分最低,对有氧能力的影响最大,尤其是在男孩中,非西班牙裔白人,和年长的青年。例如,与体重健康的年轻人相比,超重的青少年有氧能力表现较低0.28标准差[置信区间(95%CI):-0.29至-0.28],其次是1级肥胖(β=-0.57,95%CI:-0.58至-0.57),2级肥胖(β=-0.88,95%CI:-0.88至-0.88),和3类肥胖(β=-1.19,95%CI:-1.20至-1.18)。结论:与健康体重的青少年相比,处于其他体重状态的年轻人随后的健康状况较低,随着体重状态的增加,关系的大小也在增加。未来的研究应该研究针对有氧能力的干预措施,以减少健身差异。
    Background: Child weight status is inversely associated with fitness, but less is known about this relationship across fitness domains. This study examined the longitudinal association between weight status and fitness domains in a large, diverse sample of children. Methods: Data were drawn from the New York City Fitnessgram (2010-2011 to 2017-2018). Height and weight were collected annually and converted to weight status using Centers for Disease Control and Prevention growth charts. Aerobic capacity, muscular strength, and endurance were measured as age and sex standardized z-scores based on the fitness performance tests. Repeated-measures multilevel models were run testing the association between weight status and 1-year lagged fitness domains. Results: The sample included 917,554 children (51.8% male, 39.3% Hispanic, 29.9% non-Hispanic Black, 13.9%, 4.7%, and 1.7% class I, II, and III obesity, respectively). For each fitness domain, fitness scores decreased with increasing weight status across all demographic categories, with the lowest fitness scores observed in children with the most severe obesity, and highest magnitude of effects for aerobic capacity, and particularly among boys, non-Hispanic Whites, and older youth. For example, compared with youth with healthy weight, youth with overweight had 0.28 standard deviation lower aerobic capacity performance [confidence interval (95% CI): -0.29 to -0.28], followed by class 1 obesity (β = -0.57, 95% CI: -0.58 to -0.57), class 2 obesity (β = -0.88, 95% CI: -0.88 to -0.88), and class 3 obesity (β = -1.19, 95% CI: -1.20 to -1.18). Conclusions: Compared with youth with healthy weight, youth at every other weight status had lower subsequent fitness, with the magnitude of the relationship increasing as weight status increased. Future research should examine interventions targeting aerobic capacity to reduce fitness disparities.
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  • 文章类型: Journal Article
    阿尔茨海默病(AD)是最常见的年龄相关性神经退行性疾病。衰老过程中自噬的减少通过在神经元中积累潜在的毒性底物而导致脑部疾病。Rubicon是所有细胞中自噬的公认抑制剂。然而,Rubicon根据细胞类型参与不同的途径,目前关于神经元Rubicon在AD上下文中的作用的信息很少。这里,我们研究了来自AD患者和5xFAD小鼠的死后脑样本中Rubicon的细胞特异性表达及其对体内淀粉样β负荷和神经母细胞瘤细胞的影响。Further,我们评估了人诱导多能干细胞(hiPSCs)中的Rubicon水平,源自早期至中度AD和重度AD患者的死后样本。我们发现AD-hiPSC和死后样本中Rubicon水平增加,神经元中Rubicon定位显着。在缺乏Rubicon的AD转基因小鼠中,我们观察到海马中β淀粉样蛋白负荷增强,Pacer和p62水平降低。在表达APP的神经母细胞瘤细胞中,当Rubicon不存在时,发现培养基中APP/淀粉样β分泌增加,这在缺乏自噬必需的Atg5的细胞中没有观察到,或者Rab27a,需要外泌体分泌。我们的结果提出Rubicon对APP/淀粉样蛋白β稳态的未表征作用,其中神经元Rubicon是APP/淀粉样β分泌的阻遏物,为AD和其他类似疾病的治疗提供新的靶点。
    Alzheimer\'s disease (AD) is the most prevalent age-associated neurodegenerative disease. A decrease in autophagy during aging contributes to brain disorders by accumulating potentially toxic substrates in neurons. Rubicon is a well-established inhibitor of autophagy in all cells. However, Rubicon participates in different pathways depending on cell type, and little information is currently available on neuronal Rubicon\'s role in the AD context. Here, we investigated the cell-specific expression of Rubicon in postmortem brain samples from AD patients and 5xFAD mice and its impact on amyloid β burden in vivo and neuroblastoma cells. Further, we assessed Rubicon levels in human-induced pluripotent stem cells (hiPSCs), derived from early-to-moderate AD and in postmortem samples from severe AD patients. We found increased Rubicon levels in AD-hiPSCs and postmortem samples and a notable Rubicon localization in neurons. In AD transgenic mice lacking Rubicon, we observed intensified amyloid β burden in the hippocampus and decreased Pacer and p62 levels. In APP-expressing neuroblastoma cells, increased APP/amyloid β secretion in the medium was found when Rubicon was absent, which was not observed in cells depleted of Atg5, essential for autophagy, or Rab27a, required for exosome secretion. Our results propose an uncharacterized role of Rubicon on APP/amyloid β homeostasis, in which neuronal Rubicon is a repressor of APP/amyloid β secretion, defining a new way to target AD and other similar diseases therapeutically.
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  • 文章类型: Journal Article
    间充质干细胞(MSC)已成为治疗炎症性疾病的有希望的工具,如炎症性肠病(IBD),由于它们的免疫调节特性。经常,通过使用葡聚糖硫酸钠(DSS)诱导的结肠炎在小鼠中对IBD进行建模。最近,MSC中自噬的调节已被认为是改善基于MSC的免疫疗法的新策略。因此,我们调查了Pacer的可能作用,一种新的自噬增强剂,在DSS诱导的结肠炎中调节MSC的免疫抑制功能。我们发现Pacer在用促炎细胞因子TNFα刺激时上调,IBD炎症环境中释放的主要细胞因子。通过调节MSC中的Pacer表达,我们发现Pacer在响应TNFα刺激调节该细胞类型的自噬途径中起重要作用,以及调节MSC对T细胞增殖的免疫抑制能力。此外,MSC中Pacer表达的增加增强了其改善DSS诱导的小鼠结肠炎症状的能力。我们的结果支持先前的发现,即自噬调节MSC的治疗潜力,并表明通过增加Pacer水平来增强MSC的自噬能力可能对IBD具有治疗意义。
    Mesenchymal stem cells (MSC) have emerged as a promising tool to treat inflammatory diseases, such as inflammatory bowel disease (IBD), due to their immunoregulatory properties. Frequently, IBD is modeled in mice by using dextran sulfate sodium (DSS)-induced colitis. Recently, the modulation of autophagy in MSC has been suggested as a novel strategy to improve MSC-based immunotherapy. Hence, we investigated a possible role of Pacer, a novel autophagy enhancer, in regulating the immunosuppressive function of MSC in the context of DSS-induced colitis. We found that Pacer is upregulated upon stimulation with the pro-inflammatory cytokine TNFα, the main cytokine released in the inflammatory environment of IBD. By modulating Pacer expression in MSC, we found that Pacer plays an important role in regulating the autophagy pathway in this cell type in response to TNFα stimulation, as well as in regulating the immunosuppressive ability of MSC toward T-cell proliferation. Furthermore, increased expression of Pacer in MSC enhanced their ability to ameliorate the symptoms of DSS-induced colitis in mice. Our results support previous findings that autophagy regulates the therapeutic potential of MSC and suggest that the augmentation of autophagic capacity in MSC by increasing Pacer levels may have therapeutic implications for IBD.
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