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New Technique of Single-Point Scleral Fixation of the Smaller-Incision New-Generation Implantable Miniature Telescope with an 18-Month Follow-Up Period. 新一代小切口可植入微型望远镜单点巩膜固定新技术及18个月随访。
IF 3.4 3区 生物学 Q1 BIOLOGY Pub Date : 2026-02-05 DOI: 10.3390/life16020274
Agnieszka Nowosielska, Grzegorz Rotuski

Background: The implantable miniature telescope is used to provide functional vision for patients with advanced AMD. However, despite the considerable cost of the device, there are strict criteria to be met for this procedure, since the patients require challenging neuroadaptation afterward, which sometimes fails and leads to the necessity of device explantation. Visual outcomes also depend on the stability of the microtelescope; tilts cause unwanted optical aberrations and can lead to device luxation, with sight-threatening complications.

Case report: This case presents a novel technique for fixing the ophthalmic telescope device SING-IMT™. A 76-year-old female with pre-operative visual acuity of 15 letters on the ETDRS scale underwent surgery on her left eye. The superior haptic was fixed at the 12 o'clock position with a Prolene 5-0 suture, achieving good postoperative stability. The implant was stable throughout the entire observation period.

Conclusions: Implant stability is crucial for maximizing visual potential in patients with advanced AMD selected for the procedure, since visual acuity in the peripheral retina, where the perceived image eventually lands, is much lower than the macula. Therefore, there is a need to standardize surgical approaches and use objective follow-up measures to assess long-term patient satisfaction.

背景:应用植入式微型望远镜为晚期黄斑变性患者提供功能性视力。然而,尽管该装置的成本相当高,但由于患者需要挑战性的神经适应,因此该手术需要满足严格的标准,有时会失败并导致需要将装置外植。视觉效果也取决于微望远镜的稳定性;倾斜会导致不必要的光学像差,并可能导致设备脱位,并伴有威胁视力的并发症。病例报告:本病例介绍了一种用于固定眼科望远镜装置SING-IMT™的新技术。76岁女性,术前ETDRS视力为15个字母,接受左眼手术。采用Prolene 5-0缝线将上触觉固定在12点钟位置,术后稳定性好。整个观察期间种植体稳定。结论:植入物的稳定性对于选择该手术的晚期AMD患者的视觉潜力最大化至关重要,因为周围视网膜的视力远低于黄斑,而周围视网膜是感知图像最终降落的地方。因此,有必要规范手术入路,并采用客观的随访措施来评估患者的长期满意度。
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引用次数: 0
Mars Potato Cultivation: Analysis, Challenges, Sustainable Scientific Conceptions. 火星马铃薯种植:分析、挑战、可持续的科学观念。
IF 3.4 3区 生物学 Q1 BIOLOGY Pub Date : 2026-02-05 DOI: 10.3390/life16020281
Bohao Yang, Yunjiang Liang

As human space exploration advances towards establishing sustainable Martian habitats, achieving autonomous food production is a critical requirement. The potato (Solanum tuberosum L.), with its notable environmental resilience and nutritional efficiency, is a prime candidate crop. This study develops a conceptual framework for Martian potato cultivation by systematically analyzing the profound disparities between Martian conditions and plant physiology. We identify and evaluate seven fundamental challenges: atmospheric composition, extreme temperatures, water scarcity, soil properties, nutrient deficiencies, absent microbiota, and radiation/gravity effects. To address these challenges, we propose a phased, testable roadmap comprising four stages: (I) screening and bio-engineering of multi-stress-tolerant potato genotypes; (II) phased domestication via Earth-based analog experiments to define adaptability thresholds; (III) deployment of a controlled cultivation module within a Martian habitat, integrating targeted technological interventions; and (IV) conceptual exploration of extra-habitat agricultural potential. The primary contribution of this work is a structured set of hypotheses and key performance indicators for each stage, translating visionary goals into a defined research agenda to guide future empirical work in extraterrestrial agronomy.

随着人类太空探索朝着建立可持续的火星栖息地的方向发展,实现自主粮食生产是一项关键要求。马铃薯(Solanum tuberosum L.)具有显著的环境适应性和营养效率,是首选的候选作物。本研究通过系统分析火星条件与植物生理之间的深刻差异,建立了火星马铃薯种植的概念框架。我们确定并评估了七个基本挑战:大气成分、极端温度、水资源短缺、土壤性质、营养缺乏、微生物群缺失以及辐射/重力效应。为了解决这些挑战,我们提出了一个分阶段的、可测试的路线图,包括四个阶段:(1)多逆境抗性马铃薯基因型的筛选和生物工程;(II)通过地面模拟实验确定适应阈值,进行阶段性驯化;(III)在火星栖息地部署受控栽培模块,整合有针对性的技术干预;(四)生境外农业潜力的概念性探索。这项工作的主要贡献是为每个阶段提供了一套结构化的假设和关键绩效指标,将有远见的目标转化为明确的研究议程,以指导未来地外农学的实证工作。
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引用次数: 0
Idiopathic Scoliosis as a Conversion Reaction to Stress with the Neural Effect of a "Distorting Mirror". 特发性脊柱侧凸作为应激的转换反应与“扭曲镜”的神经效应。
IF 3.4 3区 生物学 Q1 BIOLOGY Pub Date : 2026-02-04 DOI: 10.3390/life16020270
Vladimir Rodkin, Mitkhat Gasanov, Inna Vasilieva, Yuliya Goncharuk, Natalia Skarzhinskaia, Nwosu Chizaram, Stanislav Rodkin

Objective: To synthesize current evidence on the relationships between adolescent idiopathic scoliosis (AIS), stress-related mechanisms, neuroanatomical asymmetry, and mental disorders, and to propose an integrative conceptual framework describing their interaction. Materials and Methods: A comprehensive literature review was conducted using the PubMed, Web of Science, and Scopus databases. Search terms targeted the etiology and pathogenesis of adolescent idiopathic scoliosis, hemispheric lateralization, stress responses, body schema disturbances, and associated mental disorders. The review was reported in accordance with PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) recommendations. A structured qualitative synthesis of 225 relevant publications was performed. Results: The analyzed studies revealed several complementary conceptual approaches to AIS pathogenesis. Emerging evidence suggests that atypical hemispheric lateralization, potentially associated with right-hemisphere (RH) dysfunction, may contribute to susceptibility to AIS. Such patterns of lateralization have been linked to specific stress-related coping strategies, including harm avoidance, as well as to disturbances of body schema and an increased prevalence of certain mental disorders. Gender-related differences in stress responses and in the development and progression of AIS were consistently reported across studies. Collectively, these findings support the hypothesis that neuropsychological and stress-related mechanisms, including phenomena described as the "distorting mirror effect", may contribute to the persistence and progression of spinal deformity in vulnerable individuals. Conclusions: AIS appears to be a multifactorial condition in which atypical neuroanatomical asymmetry, stress-related processes, and altered body representation interact. This integrative perspective generates hypotheses suggesting that prevention and treatment strategies for AIS could benefit from incorporating approaches aimed at modulating stress responses and enhancing brain neuroplasticity. Further interdisciplinary studies integrating clinical, neuroimaging, and neurobiological methods are warranted to clarify underlying mechanisms.

目的:综合目前关于青少年特发性脊柱侧凸(AIS)、应激相关机制、神经解剖不对称和精神障碍之间关系的证据,并提出一个描述它们相互作用的综合概念框架。材料和方法:使用PubMed、Web of Science和Scopus数据库进行全面的文献综述。搜索词的目标是青少年特发性脊柱侧凸的病因和发病机制,半球偏侧,应激反应,身体图式障碍,以及相关的精神障碍。根据PRISMA(系统评价和荟萃分析首选报告项目)建议进行综述。对225份相关出版物进行了结构化的定性综合。结果:分析的研究揭示了AIS发病机制的几种互补的概念方法。新出现的证据表明,非典型半球偏侧,可能与右半球(RH)功能障碍有关,可能导致AIS的易感性。这种侧化模式与特定的压力相关的应对策略有关,包括避免伤害,也与身体图式的紊乱和某些精神障碍的患病率增加有关。在应激反应和AIS的发展和进展中,性别相关的差异在所有研究中都得到了一致的报道。总的来说,这些发现支持了神经心理学和压力相关机制的假设,包括被描述为“扭曲镜效应”的现象,可能有助于易感个体脊柱畸形的持续和发展。结论:AIS似乎是一种多因素疾病,其中非典型神经解剖不对称、应激相关过程和身体表征改变相互作用。这一综合视角产生的假设表明,AIS的预防和治疗策略可能受益于结合旨在调节应激反应和增强脑神经可塑性的方法。进一步的跨学科研究整合临床,神经影像学和神经生物学方法是必要的,以阐明潜在的机制。
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引用次数: 0
Primary Metabolites in Three Ocimum Species: Compositional Diversity, Network Pharmacology, and Integrin-Targeted Therapeutic Implications. 三种植物的初级代谢物:成分多样性、网络药理学和整合素靶向治疗意义。
IF 3.4 3区 生物学 Q1 BIOLOGY Pub Date : 2026-02-04 DOI: 10.3390/life16020273
Jingtian Yang, Jialin Li, Mei Liu, Yanping Mao, Ruijun Su, Cong Zhao, Jian Yang, Qinggui Wu, Yi Huang

Ocimum (basil) is a globally significant medicinal and culinary herb. While its bioactive secondary metabolites are well-studied, the medicinal potential of its abundant primary metabolites (amino acids, vitamins, carbohydrates, steroids) remains largely unexplored. To address this gap, we employed an integrated multi-omics strategy. First, UPLC-MS/MS-based metabolomics quantified primary metabolites across six distinct Ocimum accessions (Ocimum × africanum, Ocimum tenuiflorum, Ocimum gratissimum). Profiling identified 291 primary metabolites, revealing significant interspecific variation, with 273 differential accumulated metabolites (DAMs). Subsequent network pharmacology analysis of 61 high-impact DAMs predicted 516 potential targets. Protein-protein interaction refinement yielded 28 core targets, predominantly integrins (ITGB1, ITGB3, ITGA4, ITGA2B, ITGAV) and kinases (IGF1R, PIK3CA, SRC). Enrichment analysis implicated these targets in focal adhesion, ECM-receptor interaction, and PI3K-Akt signaling pathways. Molecular docking confirmed strong potential binding (binding energy < -7 kcal/mol) between key tripeptides (e.g., Met-Ser-Tyr, Phe-Cys-Gln) and integrin subunits. Antioxidant assays (DPPH, ABTS, FRAP) further showed significant genotypic variation. This study systematically deciphers the primary metabolome of Ocimum and, through a multi-omics approach, reveals novel integrin-mediated mechanisms underpinning its potential therapeutic value, providing a foundation for developing basil-based nutraceuticals and pharmaceuticals.

罗勒是一种全球重要的药用和烹饪草本植物。虽然其生物活性次级代谢物已被充分研究,但其丰富的初级代谢物(氨基酸、维生素、碳水化合物、类固醇)的药用潜力仍未得到充分开发。为了解决这一差距,我们采用了综合多组学策略。首先,UPLC-MS/MS-based代谢组学量化了6种不同的Ocimum (Ocimum × africanum, Ocimum tenuflorum, Ocimum gratissimum)的主要代谢物。分析鉴定了291种初级代谢物,揭示了显著的种间差异,273种差异累积代谢物(dam)。随后对61个高影响dam的网络药理学分析预测了516个潜在靶点。蛋白相互作用细化得到28个核心靶点,主要是整合素(ITGB1, ITGB3, ITGA4, ITGA2B, ITGAV)和激酶(IGF1R, PIK3CA, SRC)。富集分析表明这些靶点参与了局灶黏附、ecm受体相互作用和PI3K-Akt信号通路。分子对接证实了关键三肽(如Met-Ser-Tyr, Phe-Cys-Gln)与整合素亚基之间的强潜在结合(结合能< -7 kcal/mol)。抗氧化测定(DPPH、ABTS、FRAP)进一步显示出显著的基因型差异。本研究系统地破译了Ocimum的主要代谢组,并通过多组学方法揭示了整合素介导的新机制,支持其潜在的治疗价值,为开发基于basilal的营养保健品和药物提供了基础。
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引用次数: 0
Myocardial and Vascular Involvement in COVID-19 and Post-Vaccination States: Understanding Injury Pathways and Clinical Implications. COVID-19和疫苗接种后心肌和血管受累:了解损伤途径和临床意义
IF 3.4 3区 生物学 Q1 BIOLOGY Pub Date : 2026-02-04 DOI: 10.3390/life16020268
Roxana-Nicoleta Siliste, Serban Benea, Corina Homentcovschi, Teodora Deaconu, Constantin Caruntu, Ilinca Savulescu-Fiedler

Myocardial and vascular injury secondary to SARS-CoV-2 infection and vaccination has emerged as a clinically relevant phenomenon, with distinct but overlapping mechanisms. Myocardial injury in COVID-19 results from a complex interplay between direct viral effects and immune-mediated inflammation, supported by histopathological studies revealing macrophage-rich infiltrates, microthrombosis, and supporting fibrosis in isolated areas. In contrast, vaccine-associated myocarditis-reported predominantly following mRNA vaccines-has a self-limiting clinical course, with mechanisms likely involving molecular mimicry, aberrant immune activation, or hypersensitivity reactions, although these pathways require further validation. Although mRNA vaccines have been associated with a small increase in myocarditis, particularly in young men, the risk is significantly lower than that associated with COVID-19 infection, and the cardiovascular benefits of vaccination far outweigh these rare adverse events in most populations. After the end of the pandemic, the number of patients with severe forms of COVID-19 has decreased significantly, but we consider that cardiac involvement remains an important issue for the acute and long-term prognosis of patients with SARS-CoV-2 infection. Our paper synthesizes the latest epidemiological and mechanistic evidence on the link between COVID-19, vaccination, and myocardial and/or vascular injuries, highlighting the clinical implications and providing practical recommendations for management, as well as future perspectives on risk assessment, targeted immunotherapy, advanced diagnostic tools, and long-term monitoring.

继发于SARS-CoV-2感染和疫苗接种的心肌和血管损伤已成为一种临床相关现象,其机制不同但重叠。COVID-19的心肌损伤是直接病毒作用和免疫介导炎症之间复杂的相互作用的结果,组织病理学研究显示,在孤立区域富含巨噬细胞的浸润、微血栓形成和支持性纤维化支持了这一结果。相比之下,疫苗相关性心肌炎(主要是mRNA疫苗引起的)具有自限性临床病程,其机制可能涉及分子模仿、异常免疫激活或超敏反应,尽管这些途径需要进一步验证。尽管mRNA疫苗与心肌炎的小幅增加有关,特别是在年轻男性中,但其风险明显低于与COVID-19感染相关的风险,并且在大多数人群中,疫苗接种对心血管的益处远远超过这些罕见的不良事件。大流行结束后,重症COVID-19患者数量显著减少,但我们认为心脏受累仍然是影响SARS-CoV-2感染患者急性和长期预后的重要问题。我们的论文综合了COVID-19、疫苗接种和心肌和/或血管损伤之间联系的最新流行病学和机制证据,强调了临床意义,并为管理提供了实用建议,以及风险评估、靶向免疫治疗、先进诊断工具和长期监测的未来展望。
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引用次数: 0
Correction: Ullah et al. Using Halothermal Time Model to Describe Barley (Hordeum vulgare L.) Seed Germination Response to Water Potential and Temperature. Life 2022, 12, 209. 更正:Ullah et al。用盐温时间模型描述大麦(Hordeum vulgare L.)种子萌发对水势和温度的响应生活,2022,12,209。
IF 3.4 3区 生物学 Q1 BIOLOGY Pub Date : 2026-02-04 DOI: 10.3390/life16020267
Abd Ullah, Sadaf Sadaf, Sami Ullah, Huda Alshaya, Mohammad K Okla, Yasmeen A Alwasel, Akash Tariq

In the original publication [...].

在原出版物中[…]。
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引用次数: 0
Isolation and Purification of Bacterially Produced Polyhydroxyalkanoates: Mechanisms, Limitations, and Current Advances. 细菌产生的聚羟基烷酸酯的分离和纯化:机制、局限性和当前进展。
IF 3.4 3区 生物学 Q1 BIOLOGY Pub Date : 2026-02-04 DOI: 10.3390/life16020269
Ľubomíra Jurečková, Daniela Chmelová, Miroslav Ondrejovič, Stanislav Miertuš

Polyhydroxyalkanoates (PHAs) are microbial polyesters that belong to a group of bioplastics with the potential to replace petroleum-derived plastics. Their main drawback is the high production cost, which puts them at a disadvantage compared to conventional plastics. A significant part of these costs arises from the isolation of PHAs from the cellular biomass of producing microorganisms. This review summarizes the main approaches used to recover both scl- and mcl-PHAs from native or dried (lyophilized) biomass, with attention to physical, chemical, and biological methods. Key parameters influencing extraction efficiency, polymer purity, and the final material properties are discussed, including pretreatment steps that often determine the overall outcome. The review also compares traditional halogenated solvent extraction with more environmentally acceptable alternatives and considers how different strategies can be combined to improve recovery. The current literature highlights the need for sustainable and economically acceptable processes that would make large-scale PHA production more feasible.

聚羟基烷酸酯(PHAs)是一种微生物聚酯,属于一类生物塑料,具有取代石油衍生塑料的潜力。它们的主要缺点是生产成本高,这使它们与传统塑料相比处于不利地位。这些费用的很大一部分来自从生产微生物的细胞生物量中分离pha。本文综述了从天然或干燥(冻干)生物质中回收scl- pha和mcl- pha的主要方法,重点介绍了物理、化学和生物方法。讨论了影响萃取效率、聚合物纯度和最终材料性能的关键参数,包括通常决定整体结果的预处理步骤。该综述还比较了传统卤化溶剂萃取与更环保的替代方法,并考虑了如何将不同的策略结合起来以提高回收率。目前的文献强调需要可持续和经济上可接受的工艺,这将使大规模PHA生产更加可行。
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引用次数: 0
Air Pollution, Pollen, and Indoor Exposures in Allergic Conjunctivitis: A Systematic Review. 空气污染、花粉和室内暴露导致过敏性结膜炎:系统综述。
IF 3.4 3区 生物学 Q1 BIOLOGY Pub Date : 2026-02-04 DOI: 10.3390/life16020271
Clara Martinez-Perez, Ana Paula Oliveira

Environmental exposures are increasingly recognized as important drivers of ocular surface inflammation, yet their combined contribution to the onset, exacerbation, and clinical burden of allergic conjunctivitis (AC) has not been comprehensively synthesized. This systematic review evaluated the evidence linking air pollutants, aeroallergens, and indoor or occupational exposures with allergic conjunctivitis. The review was conducted according to PRISMA 2020 and AMSTAR-2 guidelines and registered in PROSPERO (CRD420251162399). PubMed, Web of Science, and Scopus were searched from inception to 18 September 2025. Two independent reviewers screened studies, extracted data, and assessed methodological quality using the MINORS tool. Owing to substantial heterogeneity, findings were synthesized narratively. Twenty-nine studies were included, encompassing more than three million outpatient visits. Consistent associations were observed between particulate matter, nitrogen oxides, sulfur dioxide, carbon monoxide, and ozone with increased AC incidence and symptom severity, with variations by age, sex, and season. Pollen and air pollutants frequently acted synergistically. Indoor exposures were associated with increased risk in children, while occupational settings demonstrated exposure-response relationships. Experimental studies identified mechanisms involving epithelial barrier disruption, NF-κB activation, and thymic stromal lymphopoietin signaling. Overall, environmental exposures substantially contribute to allergic conjunctivitis and may inform improved prevention and personalized clinical management.

环境暴露越来越被认为是眼表炎症的重要驱动因素,但它们对过敏性结膜炎(AC)的发病、加重和临床负担的综合贡献尚未全面综合。本系统综述评估了空气污染物、空气过敏原、室内或职业暴露与过敏性结膜炎相关的证据。该审查根据PRISMA 2020和AMSTAR-2指南进行,并在PROSPERO注册(CRD420251162399)。PubMed、Web of Science和Scopus从创立到2025年9月18日进行了检索。两名独立审稿人筛选研究,提取数据,并使用未成年人工具评估方法学质量。由于大量的异质性,研究结果是综合叙述。纳入了29项研究,涵盖了300多万门诊人次。颗粒物质、氮氧化物、二氧化硫、一氧化碳和臭氧与AC发病率和症状严重程度增加之间存在一致的关联,且随年龄、性别和季节的变化而变化。花粉和空气污染物经常协同作用。室内暴露与儿童风险增加有关,而职业环境则显示了暴露-反应关系。实验研究确定了涉及上皮屏障破坏、NF-κB激活和胸腺基质淋巴生成素信号传导的机制。总的来说,环境暴露在很大程度上促进了过敏性结膜炎,并可能为改进预防和个性化临床管理提供信息。
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引用次数: 0
Lower-Limb Biomechanical Adaptations to Exercise-Induced Fatigue During Running: A Systematic Review of Injury-Relevant Mechanical Changes. 在跑步过程中,下肢对运动性疲劳的生物力学适应:损伤相关力学变化的系统回顾。
IF 3.4 3区 生物学 Q1 BIOLOGY Pub Date : 2026-02-04 DOI: 10.3390/life16020272
Prashant Kumar Choudhary, Suchishrava Choudhary, Sohom Saha, Yajuvendra Singh Rajpoot, Vasile-Cătălin Ciocan, Voinea Nicolae-Lucian, Silviu-Ioan Pavel, Constantin Șufaru

Background/Objectives: Exercise-induced fatigue is a fundamental component of running performance and training, yet it is also implicated in altered movement mechanics and increased injury risk. While numerous studies have examined fatigue-related biomechanical changes during running, findings remain fragmented across biomechanical domains and fatigue modalities. The purpose of this systematic review was to synthesize contemporary evidence on the effects of fatigue on lower-limb biomechanics during running and to interpret the potential injury relevance of these adaptations. Methods: A systematic literature search was conducted in PubMed, Scopus, and Web of Science for original empirical studies published between January 2010 and December 2025. Eligible studies involved human participants performing running or running-related tasks, applied an explicit fatigue protocol, and reported quantitative lower-limb biomechanical outcomes. Study selection followed PRISMA 2020 guidelines. Data extraction included participant characteristics, fatigue protocols, biomechanical measures, instrumentation, and key findings. Methodological quality was assessed using the Cochrane Risk of Bias 2 (RoB-2) tool. Due to substantial methodological heterogeneity, findings were synthesized narratively. Results: Twenty-four studies met the inclusion criteria. Across studies, fatigue consistently altered spatiotemporal parameters, joint kinematic and kinetic variables, spring-mass behavior, impact loading, coordination variability, neuromuscular output, and inter-limb symmetry. Common adaptations included increased ground contact time, reduced ankle joint power and stiffness, increased joint range of motion, elevated impact loading, and greater movement variability. These changes reflected reduced mechanical efficiency and a redistribution of mechanical load from distal to proximal joints, particularly toward the knee and hip. Similar fatigue-related biomechanical patterns were observed in both laboratory-based and real-world endurance running conditions. Conclusions: Exercise-induced fatigue produces systematic and injury-relevant alterations in lower-limb biomechanics during running. These adaptations may preserve short-term performance but create mechanical conditions associated with increased susceptibility to overuse and non-contact injuries. Integrating fatigue-aware biomechanical assessment, neuromuscular conditioning, and individualized load management strategies may help mitigate adverse fatigue-related adaptations.

背景/目的:运动性疲劳是跑步表现和训练的基本组成部分,但它也与运动力学的改变和损伤风险的增加有关。尽管许多研究已经检查了跑步过程中疲劳相关的生物力学变化,但在生物力学领域和疲劳模式方面的研究结果仍然是零散的。本系统综述的目的是综合当前有关疲劳对跑步过程中下肢生物力学影响的证据,并解释这些适应与潜在损伤的相关性。方法:系统检索2010年1月至2025年12月在PubMed、Scopus和Web of Science中发表的原创实证研究。符合条件的研究涉及人类参与者进行跑步或与跑步相关的任务,应用明确的疲劳方案,并报告定量的下肢生物力学结果。研究选择遵循PRISMA 2020指南。数据提取包括参与者特征、疲劳方案、生物力学测量、仪器和关键发现。采用Cochrane风险偏倚2 (rob2)工具评估方法学质量。由于大量的方法异质性,研究结果是综合叙述。结果:24项研究符合纳入标准。在研究中,疲劳持续改变时空参数、关节运动学和动力学变量、弹簧质量行为、冲击载荷、协调变异性、神经肌肉输出和肢间对称性。常见的适应包括增加与地面接触的时间,减少踝关节的力量和刚度,增加关节的活动范围,增加冲击负荷,以及更大的运动可变性。这些变化反映了机械效率的降低和机械负荷从远端关节到近端关节的重新分配,特别是膝关节和髋关节。相似的疲劳相关的生物力学模式在实验室和现实世界的耐力跑步条件下都观察到了。结论:运动引起的疲劳在跑步过程中产生系统性和损伤相关的下肢生物力学改变。这些调整可以保持短期的性能,但会造成机械条件,增加过度使用和非接触性损伤的易感性。整合疲劳感知生物力学评估、神经肌肉调节和个性化负荷管理策略可能有助于减轻疲劳相关的不利适应。
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引用次数: 0
Indications, Dwell Time, and Removal Reasons of Standardized Mid-Thigh Lower-Extremity PICCs in Adult ICU Patients: A Retrospective Cohort Study. 成人ICU患者大腿中部下肢标准化PICCs的适应症、停留时间和移除原因:一项回顾性队列研究。
IF 3.4 3区 生物学 Q1 BIOLOGY Pub Date : 2026-02-03 DOI: 10.3390/life16020262
Wei-Hung Chang, Ting-Yu Hu, Hui-Fang Hsieh, Kuang-Hua Cheng, Kuan-Pen Yu

Lower-extremity peripherally inserted central catheters (PICCs) are used in critically ill adults when upper-extremity access is limited, yet real-world data on indications, dwell time, and device-related outcomes remain scarce. We retrospectively reviewed consecutive ultrasound-guided mid-thigh lower-extremity PICC placements performed under a standardized protocol (15 cm below the inguinal ligament; fixed 55-cm insertion depth) in an adult ICU and extracted indication patterns, catheter dwell time, removal reasons, and microbiological findings. Among 38 placements in 37 patients, difficult peripheral access was present in all cases; prolonged intravenous antibiotics were the predominant indication (34/38, 89.5%), followed by total parenteral nutrition (13/38, 34.2%) and vasopressor therapy (2/38, 5.3%). Median dwell time was 19.5 days (IQR 12-25; range 3-48). Catheters were most commonly removed due to death (15/38, 39.5%), discharge (13/38, 34.2%), or no longer being clinically indicated (8/38, 21.1%), while removal for suspected catheter infection/fever occurred in 2/38 (5.3%). A catheter-drawn culture was positive in 1/38 (2.6%; Candida albicans), whereas peripheral blood cultures were positive in 4/38 (10.5%). In this single-center retrospective descriptive cohort, standardized mid-thigh lower-extremity PICCs were used for prolonged venous access. Removals for suspected infection/fever evaluation were uncommon; however, CRBSI was not adjudicated and thrombosis surveillance was not performed. These findings describe local utilization patterns and support future comparative studies and stewardship-focused quality improvement.

下肢外周插入中心导管(PICCs)用于上肢通路受限的危重成人,但关于适应症、停留时间和设备相关结果的真实数据仍然很少。我们回顾性回顾了在成人ICU中按照标准化方案(腹股沟韧带下方15 cm,固定55 cm插入深度)进行的连续超声引导下的大腿中部下肢PICC置入,并提取了适应证模式、导管停留时间、取出原因和微生物学结果。在37例患者的38个放置位置中,所有病例都存在周围通道困难;延长静脉抗生素是主要的适应症(34/38,89.5%),其次是全肠外营养(13/38,34.2%)和血管加压治疗(2/38,5.3%)。中位停留时间为19.5天(IQR 12-25;范围3-48)。拔管最常见的原因是死亡(15/38,39.5%)、出院(13/38,34.2%)或不再有临床指征(8/38,21.1%),而2/38的拔管原因是疑似感染/发热(5.3%)。导管培养阳性的占1/38(2.6%;白色念珠菌),而外周血培养阳性的占4/38(10.5%)。在这个单中心回顾性描述性队列中,标准化的大腿中部下肢PICCs用于延长静脉通路。因疑似感染/发热评估而摘除的病例罕见;然而,CRBSI没有被判定,血栓形成监测也没有进行。这些发现描述了当地的利用模式,并支持未来的比较研究和以管理为重点的质量改进。
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Life-Basel
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