Neovascularisation

新生血管化
  • 文章类型: Journal Article
    目的:评价法立单抗与其他抗血管内皮生长因子(抗VEGF)药物治疗新生血管性年龄相关性黄斑变性(nAMD)的疗效和安全性。
    方法:到2023年1月进行了系统评价(SR)。进行了网络荟萃分析(NMA),包括对幼稚人群的敏感性和亚组分析。结果包括视力变化(糖尿病视网膜病变早期治疗研究[ETDRS]字母),解剖学变化,注射频率和不良事件。Cochrane协作指南和网络元分析框架的可信度用于SR和证据的确定性,分别。
    结果:通过电子数据库和互补搜索,从4128条确定的记录中,63项随机对照试验(RCT)符合资格标准,42包括在NMA中。与大多数固定和灵活的抗VEGF治疗方案相比,Faricimab的年度注射次数显着减少,虽然通过ETDRS字母增益显示视力没有统计学上的显著差异,表现出相当的功效。视网膜厚度结果显示与其他抗VEGF药物的疗效相当,仅次于布鲁单抗。结果还显示,每8周,与阿柏西普相比,使用法利单抗治疗的患者更多的患者没有治疗后的视网膜液,雷珠单抗和贝伐单抗,在固定和亲瑞纳塔(PRN)评估的时间表中。Faricimab在眼部不良事件和严重眼部不良事件(SOAE)的风险方面表现出相当的安全性,除了与Brolucizumab的季度比较,其中faricimab显示SOAE风险显着降低。
    结论:Faricimab在疗效和安全性方面显示出相当的临床益处,与固定和灵活的抗VEGF药物方案相比,每年注射量减少,代表nAMD患者的有价值的治疗选择。
    CRD42023394226。
    OBJECTIVE: To evaluate the efficacy and safety of faricimab compared with other anti-vascular endothelial growth factor (anti-VEGF) agents in treating neovascular age-related macular degeneration (nAMD) patients.
    METHODS: A systematic review (SR) was conducted up to January 2023. Network meta-analyses (NMA) were performed, including sensitivity and subgroup analyses for naïve population. Outcomes included changes in visual acuity (Early Treatment of Diabetic Retinopathy Study [ETDRS] letters), anatomical changes, frequency of injections and adverse events. The Cochrane Collaboration guidelines and the Confidence in Network Meta-Analysis framework were used for the SR and the certainty of evidence, respectively.
    RESULTS: From 4128 identified records through electronic databases and complementary searches, 63 randomised controlled trials (RCTs) met the eligibility criteria, with 42 included in the NMA. Faricimab showed a significant reduction in the number of annual injections compared with most fixed and flexible anti-VEGF treatment regimens, while showing no statistically significant differences in visual acuity through ETDRS letter gain, demonstrating a comparable efficacy. Retinal thickness results showed comparable efficacy to other anti-VEGF agents, and inferior only to brolucizumab. Results also showed that more patients treated with faricimab were free from post-treatment retinal fluid compared with aflibercept every 8 weeks, and both ranibizumab and bevacizumab, in the fixed and pro re nata (PRN) assessed schedules. Faricimab showed a comparable safety profile regarding the risk of ocular adverse events and serious ocular adverse events (SOAE), except for the comparison with brolucizumab quarterly, in which faricimab showed a significant reduction for SOAE risk.
    CONCLUSIONS: Faricimab showed a comparable clinical benefit in efficacy and safety outcomes, with a reduction in annual injections compared with fixed and flexible anti-VEGF drug regimens, representing a valuable treatment option for nAMD patients.
    UNASSIGNED: CRD42023394226.
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  • 文章类型: Journal Article
    角膜是眼睛中的无血管组织,其在眼睛中具有维持清晰视力的多种功能,当受到损伤时,其可显著损害人的视力。过氧化物酶体增殖物激活受体(PPARs),包含三种不同过氧化物酶体增殖物激活受体(PPAR)亚型的核受体蛋白家族,即,PPARα(α),PPARγ(γ),和PPARδ(δ),已经成为治疗角膜疾病的潜在治疗靶点。在这次审查中,我们总结了目前有关PPAR药物对角膜疾病的治疗作用的文献。我们讨论了PPARs在调节角膜伤口愈合中的作用,抑制角膜炎症,新生血管化,纤维化,刺激角膜神经再生,并通过抑制角膜内的氧化应激来改善干眼症。我们还讨论了这些治疗作用的潜在机制。未来的临床试验有必要进一步证明临床治疗效果。
    The cornea is an avascular tissue in the eye that has multiple functions in the eye to maintain clear vision which can significantly impair one\'s vision when subjected to damage. Peroxisome proliferator-activated receptors (PPARs), a family of nuclear receptor proteins comprising three different peroxisome proliferator-activated receptor (PPAR) isoforms, namely, PPAR alpha (α), PPAR gamma (γ), and PPAR delta (δ), have emerged as potential therapeutic targets for treating corneal diseases. In this review, we summarised the current literature on the therapeutic effects of PPAR agents on corneal diseases. We discussed the role of PPARs in the modulation of corneal wound healing, suppression of corneal inflammation, neovascularisation, fibrosis, stimulation of corneal nerve regeneration, and amelioration of dry eye by inhibiting oxidative stress within the cornea. We also discussed the underlying mechanisms of these therapeutic effects. Future clinical trials are warranted to further attest to the clinical therapeutic efficacy.
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  • 文章类型: Journal Article
    背景:早产儿视网膜病变(ROP)是全球儿童失明的主要原因。及时的诊断和治疗在ROP管理中至关重要。因此,识别突出的风险因素可以促进立即采取行动。在各种危险因素中,分娩方式对ROP的影响尚不清楚.因此,本研究旨在评估不同分娩方式对ROP发生率的相关性.
    方法:在PubMed上进行了全面的文献检索,ProQuest,EBSCOHost和Cochrane数据库,评估从开始到2023年12月的分娩方式-阴道分娩或剖宫产(剖腹产)-ROP发生率之间的关系。进行随机效应荟萃分析以估计合并的OR及其95%CI。
    结果:本综述包括5项队列研究,涉及2048名婴儿。与剖腹产相比,通过阴道分娩出生的婴儿的ROP发生率更高。荟萃分析显示,剖腹产使ROP婴儿的未调整几率降低了46%,异质性低(OR0.54(95%CI0.40至0.73);I2=40.73%)。然而,合并校正效应在中度异质性下统计学上无统计学意义(校正OR0.59(95%CI0.28至1.23);I2=70.51%),可能源于每个研究的控制变量的多种变化。
    结论:尽管有不同的统计学意义,我们的研究结果强调了理解分娩方式对新生儿眼科结局的影响的迫切需要.由于现有研究数量有限,需要进一步的研究来确认这种关联。
    CRD42023486278。
    BACKGROUND: Retinopathy of prematurity (ROP) is a leading cause of childhood blindness worldwide. Prompt diagnosis and treatment are crucial in ROP management. Thus, the identification of prominent risk factors could facilitate immediate action. Among various risk factors, the effects of mode of delivery on ROP remain unclear. Therefore, this study aims to assess the association between different modes of delivery on ROP incidence.
    METHODS: Comprehensive literature search was conducted on PubMed, ProQuest, EBSCOHost and Cochrane databases, to evaluate the association of mode of delivery-vaginal delivery or caesarean section (c-section)-and the incidence of ROP from inception to December 2023. Random-effects meta-analysis was performed to estimate the pooled OR along with their 95% CIs.
    RESULTS: This review included 5 cohort studies involving 2048 babies. A higher incidence of ROP was observed in infants born through vaginal delivery compared with caesarean section. Meta-analysis showed that C-section decreased the unadjusted odds of having ROP infants by 46% with low heterogeneity (OR 0.54 (95% CI 0.40 to 0.73); I2=40.73%). However, pooled adjusted effects were statistically insignificant with moderate heterogeneity (adjusted OR 0.59 (95% CI 0.28 to 1.23); I2=70.51%), possibly stemming from multiple variations in the controlled variables of each study.
    CONCLUSIONS: Despite varying statistical significance, our findings underscore the crucial need to comprehend the influence of delivery mode on neonatal ophthalmic outcomes. Due to a limited number of existing studies, further research is needed to confirm the association.
    UNASSIGNED: CRD42023486278.
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  • 文章类型: Journal Article
    年龄相关性黄斑变性是导致失明的主要原因,抗血管内皮生长因子(VEGF)玻璃体内治疗的发展彻底改变了该疾病的管理。同时,由于当前治疗方案的局限性,出现了新的挑战和未满足的需求.疾病过程中的新生血管形成发展具有复杂的发病机制,研究了几种生物标志物及其与治疗结果的关系。我们回顾了有关新血管形成发展和与治疗反应相关的生物标志物的相关文献。提高我们在该领域的知识可以改善患者的治疗效果并提供个性化护理。
    Age-related macular degeneration is a major cause of blindness, and the development of anti-vascular endothelial growth factor (VEGF) intravitreal treatments has revolutionised the management of the disease. At the same time, new challenges and unmet needs arose due to the limitations of the current therapeutic options. Neovascularisation development during the course of the disease has a complex pathogenetic mechanism, and several biomarkers and their association with treatment outcomes have been investigated. We reviewed the relevant literature about neovascularisation development and biomarkers related to response to treatment. Improving our knowledge on the field can improve patient outcomes and offer personalised care.
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  • 文章类型: Journal Article
    背景:近视患病率上升是眼科关注的问题,近视脉络膜新生血管(m-CNV)显着影响视力。然而,m-CNV管理的长期结果一直不令人满意,导致高复发率。这些研究旨在确定m-CNV复发的危险因素。
    方法:综合审查遵循国际前瞻性系统审查登记册(PROSPERO)中预先注册的计划。搜索策略使用了各种数据库,包括PubMed,科克伦图书馆,Embase,Scopus和ScienceDirect使用关键词“近视脉络膜新生血管”,\'重复\'和\'风险\'。根据预定标准鉴定和分析合格的研究。本研究在PROSPERO(CRD4202343461)上注册。
    结果:系统评价包括三项回顾性研究,调查与m-CNV复发相关的危险因素。这些因素是:(1)最初的疾病控制需要三次或更多次注射,(2)年龄较大,(3)较大的近视黄斑新生血管,(4)近凹CNV,(5)高反射灶(HRF)的高度较大;(6)椭圆形区(EZ)和视网膜色素上皮(RPE)的破坏或缺失。
    结论:m-CNV复发的危险因素包括需要大量的注射,年龄较大,大黄斑CNV,并腹位置,HRF高度增加,EZ和RPE结构发生变化。了解这些因素可以为个性化治疗方法提供信息,并通过识别复发风险较高的个体并实施积极措施以减轻m-CNV复发和进展的影响来改善患者预后。需要进行进一步的研究,以增强我们对潜在机制的理解,并开发创新的治疗方法来进行有效的m-CNV管理。
    CRD4202343461。
    The rising prevalence of myopia is a concern in ophthalmology, with myopic choroidal neovascularisation (m-CNV) significantly affecting vision. However, long-term outcomes of m-CNV management have been unsatisfactory, leading to high recurrence rates. These studies aim to identify risk factors for m-CNV recurrence.
    Comprehensive review followed a pre-registered plan in the International Prospective Register of Systematic Reviews (PROSPERO). The search strategy used various databases including PubMed, Cochrane Library, Embase, Scopus and ScienceDirect using the keywords \'Myopic Choroidal Neovascularization\', \'Recurrence\' and \'Risk\'. Eligible studies were identified and analysed based on predetermined criteria. This study was registered on PROSPERO (CRD4202343461).
    The systematic review included three retrospective studies investigating risk factors associated with m-CNV recurrence. These factors are: (1) requiring three or more injections for initial disease control, (2) older age, (3) larger myopic macular neovascularisation, (4) juxtafoveal CNV, (5) larger height of hyper-reflective foci (HRF) and (6) destruction or absence of the ellipsoid zone (EZ) and retinal pigment epithelium (RPE).
    Risk factors for m-CNV recurrence include a greater number of required injections, older age, large macular CNV, juxtafoveal location, increased HRF height and changes in EZ and RPE structure. Understanding these factors can inform personalised treatment approaches and improve patient outcomes by identifying individuals at higher risk of recurrence and implementing proactive measures to mitigate the impact of m-CNV recurrence and progression. Further investigation is needed to enhance our understanding of the underlying mechanisms and develop innovative therapeutic approaches for effective m-CNV management.
    CRD4202343461.
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  • 文章类型: Journal Article
    目的:分析抗血管内皮生长因子(抗VEGF)治疗新生血管性年龄相关性黄斑变性(nAMD)在单中心临床实践中的长期结果。
    方法:从电子病历中检索2008年1月1日至2020年12月31日期间接受玻璃体内注射(IVI)治疗nAMD的所有患者。包括3008例患者的所有3844只未治疗的眼睛,总共施用了50146只IVI(87%贝伐单抗)。主要结局指标是视力(VA)从基线的平均变化,基线15个字母内的眼睛比例,VA≥20/40Snellen和≤20/200Snellen的眼睛比例,年度访问次数和年度IVIs数量。
    结果:平均基线VA为55个早期治疗糖尿病视网膜病变研究(ETDRS)字母,并且在第1、2、3、5、7和10年,VA从基线的平均变化分别为+2、+2、±0、-2、-2和-4个ETDRS字母。基线15个字母内的眼睛比例为88%,87%,82%,80%,分别在1、2、3、5、7和10年末分别为76%和72%。年度IVI的中位数在第1-7年为6,在第10年为5。年度总就诊次数的中位数在第1年为10次,在第2-7年为9次,在第10年为8次。
    结论:使用PRN治疗方案的抗VEGF治疗可维持短期和长期的VA。
    To analyse long-term outcomes of antivascular endothelial growth factor (anti-VEGF) therapy for the treatment of neovascular age-related macular degeneration (nAMD) using pro re nata (PRN) regimen in a single-centre clinical practice.
    All patients receiving intravitreal injection (IVI) for nAMD between 1 January 2008 and 31 December 2020 were searched from electronic medical records. All 3844 treatment-naïve eyes of 3008 patients were included with a total of 50 146 IVIs (87% bevacizumab) administered. Main outcome measures were mean change in visual acuity (VA) from baseline, proportion of eyes within 15 letters of baseline, proportion of eyes with VA ≥20/40 Snellen and ≤20/200 Snellen, number of annual visits and number of annual IVIs.
    The mean baseline VA was 55 Early Treatment Diabetic Retinopathy Study (ETDRS) letters and the mean change in VA from baseline was +2, +2, ±0, -2, -2 and -4 ETDRS letters at year 1, 2, 3, 5, 7 and 10, respectively. Proportions of eyes within 15 letters of baseline were 88%, 87%, 82%, 80%, 76% and 72% at the end of years 1, 2, 3, 5, 7 and 10, respectively. The median number of annual IVI was 6 at years 1-7 and 5 at year 10. The median number of annual total visits was 10 at year 1, 9 at years 2-7 and 8 at year 10, respectively.
    VA was maintained short-term and long-term with anti-VEGF therapy using PRN treatment regimen.
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  • 文章类型: Journal Article
    心肌梗塞,由血栓或冠状血管阻塞引起,导致不可逆的缺血性损伤。早期再灌注策略的进展显著降低了心肌梗死后的短期死亡率。然而,幸存者患心力衰竭的风险增加,这使得一年的死亡风险很高。受损的新生哺乳动物心脏的再生能力激发了广泛的研究,即重述发育再生程序是否对成人心血管疾病有益。通过新生血管形成和淋巴管生成恢复梗死区和边界区域的功能性血液和淋巴管网,分别,是促进心肌再生的关键要求。对发展中和心肌梗死后成年患者中调节冠状动脉血管和淋巴管扩张和功能的内源性机制的更好理解可能会为未来的治疗策略提供信息,并改善临床前研究的翻译。在这次审查中,我们探索心血管再生领域的基础研究和关键发现,专注于新生血管化和淋巴管生成,并讨论迄今为止采用的治疗策略的结果。©2023作者。由JohnWiley&SonsLtd代表英国和爱尔兰病理学会出版的病理学杂志。
    Myocardial infarction, caused by a thrombus or coronary vascular occlusion, leads to irreversible ischaemic injury. Advances in early reperfusion strategies have significantly reduced short-term mortality after myocardial infarction. However, survivors have an increased risk of developing heart failure, which confers a high risk of death at 1 year. The capacity of the injured neonatal mammalian heart to regenerate has stimulated extensive research into whether recapitulation of developmental regeneration programmes may be beneficial in adult cardiovascular disease. Restoration of functional blood and lymphatic vascular networks in the infarct and border regions via neovascularisation and lymphangiogenesis, respectively, is a key requirement to facilitate myocardial regeneration. An improved understanding of the endogenous mechanisms regulating coronary vascular and lymphatic expansion and function in development and in adult patients after myocardial infarction may inform future therapeutic strategies and improve translation from pre-clinical studies. In this review, we explore the underpinning research and key findings in the field of cardiovascular regeneration, with a focus on neovascularisation and lymphangiogenesis, and discuss the outcomes of therapeutic strategies employed to date. © 2023 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland.
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  • 文章类型: Journal Article
    背景:糖尿病性视网膜病变(DR)是全球成年人失明的主要原因。具有自主深度学习算法的人工智能(AI)已越来越多地用于视网膜图像分析,特别是用于筛选可推荐的DR。已建立的增殖性DR治疗方法是全视网膜或局灶性激光光凝。训练自主模型以辨别激光模式在疾病管理和随访中可能是重要的。
    方法:使用EyePACs数据集训练深度学习模型以进行激光治疗检测。数据是随机分配的,参与者,进入开发(n=18945)和验证(n=2105)集。在单个图像上进行分析,眼睛,和患者水平。然后使用该模型过滤用于视网膜适应症的三个独立AI模型的输入;使用接收器工作特征曲线下面积(AUC)和平均绝对误差(MAE)测量模型功效的变化。
    结果:关于激光光凝检测:患者的AUC分别为0.981、0.95和0.979,image,和眼睛水平,分别。在分析独立模型时,过滤后显示功效全面提高。在有伪影的图像上检测到的糖尿病性黄斑水肿为AUC0.932,而没有伪影的图像为AUC0.955。在有人工制品的图像上进行的参与性别检测为AUC0.872,而没有人工制品的图像为AUC0.922。在有伪影的图像上的参与者年龄检测为MAE5.33,而没有伪影的图像为MAE3.81。
    结论:所提出的激光治疗检测模型在所有分析指标上都实现了高性能,并已被证明对不同AI模型的功效产生积极影响。这表明激光检测通常可以改善AI驱动的眼底图像应用。
    BACKGROUND: Diabetic retinopathy (DR) is a leading cause of blindness in adults worldwide. Artificial intelligence (AI) with autonomous deep learning algorithms has been increasingly used in retinal image analysis, particularly for the screening of referrable DR. An established treatment for proliferative DR is panretinal or focal laser photocoagulation. Training autonomous models to discern laser patterns can be important in disease management and follow-up.
    METHODS: A deep learning model was trained for laser treatment detection using the EyePACs dataset. Data was randomly assigned, by participant, into development (n=18 945) and validation (n=2105) sets. Analysis was conducted at the single image, eye, and patient levels. The model was then used to filter input for three independent AI models for retinal indications; changes in model efficacy were measured using area under the receiver operating characteristic curve (AUC) and mean absolute error (MAE).
    RESULTS: On the task of laser photocoagulation detection: AUCs of 0.981, 0.95, and 0.979 were achieved at the patient, image, and eye levels, respectively. When analysing independent models, efficacy was shown to improve across the board after filtering. Diabetic macular oedema detection on images with artefacts was AUC 0.932 vs AUC 0.955 on those without. Participant sex detection on images with artefacts was AUC 0.872 vs AUC 0.922 on those without. Participant age detection on images with artefacts was MAE 5.33 vs MAE 3.81 on those without.
    CONCLUSIONS: The proposed model for laser treatment detection achieved high performance on all analysis metrics and has been demonstrated to positively affect the efficacy of different AI models, suggesting that laser detection can generally improve AI-powered applications for fundus images.
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  • 文章类型: Journal Article
    增殖性糖尿病视网膜病变(PDR)糖尿病视网膜病变(DR)的后遗症,糖尿病(DM)的常见并发症,是劳动年龄人口失明的主要原因。目前对DR风险的筛选过程不够有效,使得通常在发生不可逆损害之前未检测到疾病。糖尿病相关的小血管疾病和神经视网膜变化形成了一个恶性循环,导致DR转化为PDR,具有特征性的眼部属性,包括过度的线粒体和视网膜细胞损伤。慢性炎症,新生血管化,减少视野。PDR被认为是其他严重糖尿病并发症如缺血性卒中的独立预测因子。“多米诺效应”是级联DM并发症的高度特征,其中DR是分子和视觉信号受损的早期指标。线粒体健康控制在DR管理中具有临床相关性,和多组学泪液分析可用于DR预后和PDR预测。改变了代谢途径和生物能学,微血管缺陷和小血管疾病,慢性炎症,和过度的组织重塑是本文的重点,作为基于证据的目标,用于通过实施从反应性医学到预测性医学的范式转变来开发针对个人量身定制的诊断和治疗算法,以实现具有成本效益的早期预防,预防性,和个性化医疗(PPPM)在一级和二级DR护理管理中的应用。
    Proliferative diabetic retinopathy (PDR) the sequel of diabetic retinopathy (DR), a frequent complication of diabetes mellitus (DM), is the leading cause of blindness in the working-age population. The current screening process for the DR risk is not sufficiently effective such that often the disease is undetected until irreversible damage occurs. Diabetes-associated small vessel disease and neuroretinal changes create a vicious cycle resulting in the conversion of DR into PDR with characteristic ocular attributes including excessive mitochondrial and retinal cell damage, chronic inflammation, neovascularisation, and reduced visual field. PDR is considered an independent predictor of other severe diabetic complications such as ischemic stroke. A \"domino effect\" is highly characteristic for the cascading DM complications in which DR is an early indicator of impaired molecular and visual signaling. Mitochondrial health control is clinically relevant in DR management, and multi-omic tear fluid analysis can be instrumental for DR prognosis and PDR prediction. Altered metabolic pathways and bioenergetics, microvascular deficits and small vessel disease, chronic inflammation, and excessive tissue remodelling are in focus of this article as evidence-based targets for a predictive approach to develop diagnosis and treatment algorithms tailored to the individual for a cost-effective early prevention by implementing the paradigm shift from reactive medicine to predictive, preventive, and personalized medicine (PPPM) in primary and secondary DR care management.
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  • 文章类型: Journal Article
    2型糖尿病(T2DM)定义为主要不是胰岛素依赖性的成人发作型,占所有糖尿病(DM)病例的95%以上。根据全球记录,5.37亿20-79岁的成年人受到DM的影响,这意味着15人中至少有1人受到DM的影响。预计到2045年,这一数字将增长51%。T2DM最常见的并发症之一是糖尿病性视网膜病变(DR),总患病率超过30%。与DR相关的视力障碍的总数正在上升,由于T2DM人口的增长。增殖性糖尿病视网膜病变(PDR)是进行性DR,也是工作年龄成年人可预防失明的主要原因。此外,PDR具有特征性系统属性,包括线粒体损伤,增加细胞死亡和慢性炎症,是缺血性卒中等级联DM并发症的独立预测因子。因此,早期DR是出现在“多米诺效应”上游的可靠预测因子。全球筛查,导致及时识别DM相关并发症,目前应用的反应性药物没有充分实施。个性化的预测方法和具有成本效益的有针对性的预防短期预测,预防和个性化医疗(PPPM/3PM)可以很好地利用积累的知识,防止失明和其他严重的DM并发症。为了达到这个目标,需要可靠的阶段和疾病特异性生物标志物面板,其特征在于样品收集的简单方式,分析的高灵敏度和特异性。在目前的研究中,我们检验了以下假设:非侵入性收集的泪液是分析眼部和全身(DM相关并发症)生物标志物模式的可靠来源,适用于鉴别诊断稳定性DR和PDR.这里,我们报告了正在进行的全面研究的第一个结果,其中我们将个性化的患者概况(健康对照与稳定D患者以及有或没有合并症的PDR患者)与其在泪液中的代谢概况相关联。进行的比较质谱分析确定了以下代谢簇,这些代谢簇在比较组中差异表达:酰基肉碱,氨基酸及相关化合物,胆汁酸,神经酰胺,溶血磷脂酰胆碱,核碱基及相关化合物,磷脂酰胆碱,甘油三酯,胆固醇酯,和脂肪酸。我们的初步数据强烈支持泪液中代谢模式的潜在临床应用,表明DR分期和PDR进展具有独特的代谢特征。这项初步研究创建了一个平台,用于验证泪液生物标志物模式,以对倾向于PDR的T2DM患者进行分层。此外,由于PDR是缺血性卒中等严重T2DM相关并发症的独立预测因子,我们的国际项目旨在为"诊断树"(是/否)创建适用于糖尿病护理健康风险评估的分析原型.
    Type 2 diabetes (T2DM) defined as the adult-onset type that is primarily not insulin-dependent, comprises over 95% of all diabetes mellitus (DM) cases. According to global records, 537 million adults aged 20-79 years are affected by DM that means at least 1 out of 15 persons. This number is projected to grow by 51% by the year 2045. One of the most common complications of T2DM is diabetic retinopathy (DR) with an overall prevalence over 30%. The total number of the DR-related visual impairments is on the rise, due to the growing T2DM population. Proliferative diabetic retinopathy (PDR) is the progressing DR and leading cause of preventable blindness in working-age adults. Moreover, PDR with characteristic systemic attributes including mitochondrial impairment, increased cell death and chronic inflammation, is an independent predictor of the cascading DM-complications such as ischemic stroke. Therefore, early DR is a reliable predictor appearing upstream of this \"domino effect\". Global screening, leading to timely identification of DM-related complications, is insufficiently implemented by currently applied reactive medicine. A personalised predictive approach and cost-effective targeted prevention shortly - predictive, preventive and personalised medicine (PPPM / 3PM) could make a good use of the accumulated knowledge, preventing blindness and other severe DM complications. In order to reach this goal, reliable stage- and disease-specific biomarker panels are needed characterised by an easy way of the sample collection, high sensitivity and specificity of analyses. In the current study, we tested the hypothesis that non-invasively collected tear fluid is a robust source for the analysis of ocular and systemic (DM-related complications) biomarker patterns suitable for differential diagnosis of stable DR versus PDR. Here, we report the first results of the comprehensive ongoing study, in which we correlate individualised patient profiles (healthy controls versus patients with stable D as well as patients with PDR with and without co-morbidities) with their metabolic profiles in the tear fluid. Comparative mass spectrometric analysis performed has identified following metabolic clusters which are differentially expressed in the groups of comparison: acylcarnitines, amino acid & related compounds, bile acids, ceramides, lysophosphatidyl-choline, nucleobases & related compounds, phosphatidyl-cholines, triglycerides, cholesterol esters, and fatty acids. Our preliminary data strongly support potential clinical utility of metabolic patterns in the tear fluid indicating a unique metabolic signature characteristic for the DR stages and PDR progression. This pilot study creates a platform for validating the tear fluid biomarker patterns to stratify T2DM-patients predisposed to the PDR. Moreover, since PDR is an independent predictor of severe T2DM-related complications such as ischemic stroke, our international project aims to create an analytical prototype for the \"diagnostic tree\" (yes/no) applicable to healthrisk assessment in diabetes care.
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