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Ineffective voluntary motor improvement through non-invasive BCI-FES with static magnetic field in complete spinal cord injury: A pilot study 通过使用静态磁场的无创 BCI-FES 改善完全性脊髓损伤患者的自主运动效果不佳:试点研究
Pub Date : 2024-03-22 DOI: 10.36922/gtm.2285
Larissa Gomes Sartori, Roger Burgo de Souza, Daniel Prado Campos, Paulo Broniera Júnior, José Jair Alves Mendes Junior, Eddy Krueger
In response to the challenge of spinal cord injury (SCI) rehabilitation, this study aimed to investigate the effect of applying a non-invasive interface of surface neuroelectrical signals and functional electrical stimulation (sNES-sFES) with a static magnetic field on the motor outcome of the quadriceps femoris muscle in an individual with a complete SCI. The participant, who had a complete SCI in the chronic stage, was evaluated before (pre) and after nine (post) interventions using surface electromyography (sEMG). In addition, spasticity (modified Ashworth scale [MAS]) was observed in all sessions. Moreover, the user learning curve process (classifier percentage and correct success of the sFES hits) was evaluated. In general, we observed: (i) No voluntary muscle contraction (pre- and post-root mean square of sEMG = 0%) improvement; (ii) spasticity decrease (average one point in MAS); (iii) gradual improvement in the user learning effect on the interface, reaching 84% in classifier accuracy and a maximum percentage of correct sFES activation of 53%. In conclusion, no improvement in voluntary muscular contraction was observed within 9 weeks of the intervention (1 session/day; 1 h/week). However, our study demonstrates the safety and feasibility of our methodology for future research involving continuous physical rehabilitation training and the implementation of assistive technology.
为了应对脊髓损伤(SCI)康复所面临的挑战,本研究旨在调查应用表面神经电信号和功能性电刺激(sNES-sFES)的无创界面与静态磁场对完全性 SCI 患者股四头肌运动效果的影响。该受试者患有完全性 SCI,处于慢性阶段,在干预前和干预后的九次干预中使用表面肌电图(sEMG)对其进行了评估。此外,在所有疗程中都观察到了痉挛情况(改良阿什沃斯量表[MAS])。此外,我们还评估了用户学习曲线过程(分类器百分比和 sFES 点击的正确成功率)。总的来说,我们观察到(i) 自主肌肉收缩没有改善(前后 sEMG 的根均方 = 0%);(ii) 痉挛减少(MAS 平均减少一个点);(iii) 用户对界面的学习效果逐渐改善,分类器准确率达到 84%,sFES 激活正确率最高达到 53%。总之,在干预(每天 1 次;每周 1 小时)的 9 周内,没有观察到肌肉自主收缩的改善。不过,我们的研究证明了我们的方法在未来涉及持续身体康复训练和辅助技术实施的研究中的安全性和可行性。
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引用次数: 0
You’re a pain in my side! Abscess and microperforation as a complication of therapy from early-stage endometrial cancer: A case report 你是我的眼中钉脓肿和微穿孔是早期子宫内膜癌治疗的并发症:病例报告
Pub Date : 2024-03-19 DOI: 10.36922/gtm.2114
Jennifer McCall, Jena Hall, Elena Park
This paper reports on a 55-year-old woman presenting with left lower quadrant and groin pain that posed a significant diagnostic challenge. She had a history of obesity and stage 1B endometrial carcinoma treated with surgery and radiation 1-year prior. Despite several unsuccessful biopsy attempts and unclear imaging findings, she was ultimately diagnosed with a pelvic sidewall abscess secondary to a bowel microperforation, a rare late complication of radiation related to adhesions, weakened bowel, and peristalsis. Her condition was successfully treated with drainage and antibiotics. It is widely known that patients with endometrial cancer and comorbid obesity often experience diagnostic delay, weight stigma, and other barriers and thus deserve careful attention and continued advocacy.
本文报告了一名 55 岁女性的病例,她出现左下腹和腹股沟疼痛,这给诊断带来了巨大挑战。她有肥胖病史,1 年前曾患 1B 期子宫内膜癌,接受过手术和放射治疗。尽管多次尝试活检均未成功,影像学检查结果也不明确,但她最终被诊断为继发于肠道微穿孔的盆腔侧壁脓肿,这是一种罕见的辐射晚期并发症,与粘连、肠道变弱和蠕动有关。通过引流和抗生素治疗,她的病情得到了成功控制。众所周知,子宫内膜癌和合并肥胖症的患者经常会遇到诊断延误、体重耻辱感和其他障碍,因此值得仔细关注和持续宣传。
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引用次数: 0
Comparative analysis of immune responses in humans infected with Alpha, Delta, and Omicron strains of SARS-CoV-2 感染 SARS-CoV-2 的 Alpha、Delta 和 Omicron 株的人体免疫反应比较分析
Pub Date : 2024-03-19 DOI: 10.36922/gtm.2228
Mihieka Bose, C. Munshi
The COVID-19 pandemic outbreak has profoundly challenged global public health over the last couple of years. Throughout this period, numerous mutant strains of SARS-CoV-2 have emerged, presenting diverse pathophysiology and immune response challenges for infected individuals. Among these, variant of concern strains, including Alpha (B.1.1.7), Delta (B.1.617.2), and Omicron (B.1.1.529), has garnered the most significant attention for their role in causing epidemiological dynamics, ultimately leading to elevated infectivity and significant mortality rates. This review aims to provide a comparative analysis of the immune-pathophysiological mechanisms associated with these aforementioned strains of SARS-CoV-2.
在过去几年里,COVID-19 大流行疫情给全球公共卫生带来了严峻挑战。在此期间,SARS-CoV-2 出现了许多变异株,给感染者带来了不同的病理生理学和免疫反应挑战。其中,受关注的变异株,包括 Alpha(B.1.1.7)、Delta(B.1.617.2)和 Omicron(B.1.1.529),因其在引起流行病学动态变化中的作用,最终导致感染率升高和显著的死亡率,而最受关注。本综述旨在对与上述 SARS-CoV-2 株系相关的免疫病理生理机制进行比较分析。
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引用次数: 0
Mitochondrial involvement in ferroptotic cell death 线粒体参与铁细胞死亡
Pub Date : 2024-03-18 DOI: 10.36922/gtm.2208
C. Munshi, Tithi Paul, Kalpesh Jas, Mihieka Bose, Shelley Bhattacharya
Ferroptosis is a regulated cell death pathophysiologically associated with the depletion of the antioxidant system due to iron overload, which results in excess lipid peroxidation. Mitochondria are crucial organelles known for their prominent involvement in various cellular metabolic activities and cell death processes. While our understanding of ferroptotic signaling pathways is advancing, further investigation into the intricate relationship between mitochondrial bio-process and this mode of cell death is necessary to identify effective biomedical therapeutic options targeting this organelle. However, the direct involvement of mitochondria in ferroptosis has remained a topic of debate due to the limited availability of concrete information to date. This review aims to elucidate the pathophysiological perspectives of mitochondria during ferroptotic cell death.
铁中毒是一种调节性细胞死亡,在病理生理上与铁超载导致的抗氧化系统耗竭有关,铁超载会导致脂质过氧化。线粒体是重要的细胞器,因其在各种细胞代谢活动和细胞死亡过程中的突出参与而闻名。虽然我们对铁氧化信号通路的了解在不断加深,但仍有必要进一步研究线粒体生物过程与这种细胞死亡模式之间错综复杂的关系,以确定针对这一细胞器的有效生物医学治疗方案。然而,由于迄今为止可获得的具体信息有限,线粒体直接参与铁中毒仍是一个争论不休的话题。本综述旨在从病理生理学的角度阐明线粒体在铁细胞死亡过程中的作用。
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引用次数: 0
Challenges and advancements in high-throughput screening strategies for cancer therapeutics 癌症疗法高通量筛选策略的挑战与进展
Pub Date : 2024-03-12 DOI: 10.36922/gtm.2448
Ruchi Roy, Sunil Kumar Singh, Nashrah Ahmad, Sweta Misra
Drug discovery relies on high-throughput screening (HTS) methods incorporating both target- and cell-based assays. This comprehensive review delves into the challenges and benefits associated with these assays within the context of HTS. The strategies for developing screening assays, spanning both primary and secondary screens for target identification, are discussed. Furthermore, we review the methods of identifying the most efficacious drugs through these approaches for the treatment of cancer in detail. While various drugs have been identified for cancer treatment, there remains a pressing need for more relevant phenotypic assays. These assays aim to produce the desired disease phenotype, with a specific emphasis on highlighting targets rather than off-targets. The ultimate goal is to pave the way for innovative drug development strategies that can effectively treat cancer patients, thereby reducing the mortality rate.
药物发现依赖于高通量筛选(HTS)方法,其中包括基于靶标和细胞的检测方法。本综述深入探讨了在 HTS 背景下与这些检测方法相关的挑战和优势。我们讨论了开发筛选测定的策略,包括用于靶点鉴定的初筛和复筛。此外,我们还详细回顾了通过这些方法确定治疗癌症的最有效药物的方法。虽然已经确定了多种治疗癌症的药物,但仍然迫切需要更多相关的表型检测方法。这些测定旨在产生理想的疾病表型,特别强调突出靶点而非非靶点。最终目标是为创新药物开发战略铺平道路,从而有效治疗癌症患者,降低死亡率。
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引用次数: 0
A message from the Editor-in-Chief, Prof. Lemin Zheng 主编郑乐民教授的致辞
Pub Date : 2023-12-29 DOI: 10.36922/gtm.2365
Lemin Zheng
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引用次数: 0
Quantitative proteomic analysis reveals regulatory networks of extracellular matrix receptor interaction pathways in endothelial cells after myocardial infarction 定量蛋白质组分析揭示心肌梗死后血管内皮细胞细胞外基质受体相互作用通路的调控网络
Pub Date : 2023-12-29 DOI: 10.36922/gtm.2217
Xuan Wu, Jiageng Cai, Peng Wang, Lingyun Zu
Cardiac fibrosis, a significant pathological alteration following myocardial infarction (MI), remains enigmatic with respect to the role of cardiac endothelial cells (ECs). To elucidate the proteomic shifts in cardiac ECs accompanying MI-induced cardiac fibrosis, a standard MI mice model was established through ligation of the left anterior descending branch. Following 14 days of effective modeling, we isolated primary ECs from the hearts of both sham and MI models utilizing the CD31 microbeads sorting technique. Quantitative proteomics and bioinformatics methodologies, including tandem mass spectrometry, were employed to discern proteomic alterations in the primary endothelial cells of the experimental groups. Comprehensive analyses, including Gene Ontology analysis, Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis, functional enrichment analysis, and functional enrichment cluster analysis, revealed an up-regulation of proteins associated with extracellular matrix-receptor interaction pathway in cardiac fibrosis post-MI. Subsequent Western blot analysis confirmed the up-regulation of specific proteins involved in this pathway, namely collagen type VI alpha 2 (Col6α2), vitronectin (Vtn), and integrin beta (Itgβ). We conclude that the expression levels of Col6α2, Vtn, and Itgβ in primary ECs during the early stage of cardiac fibrosis, 14 days post-MI, were significantly elevated compared to the sham group (P < 0.05). This observation suggests that ECM-receptor interaction could potentially influence the progression of cardiac fibrosis following MI.
心脏纤维化是心肌梗死(MI)后的一种重要病理改变,但心脏内皮细胞(ECs)的作用仍是一个谜。为了阐明心肌梗死诱发心脏纤维化后心脏内皮细胞蛋白质组的变化,我们通过结扎左前降支建立了标准的心肌梗死小鼠模型。经过 14 天的有效建模后,我们利用 CD31 微珠分选技术从假性和 MI 模型的心脏中分离出了原发性心 ECs。我们采用定量蛋白质组学和生物信息学方法(包括串联质谱法)来鉴别实验组原代内皮细胞的蛋白质组学变化。基因本体分析、京都基因和基因组百科全书(KEGG)分析、功能富集分析和功能富集聚类分析等综合分析表明,在心肌梗死后的心脏纤维化中,与细胞外基质-受体相互作用通路相关的蛋白质上调。随后的 Western 印迹分析证实了参与该通路的特定蛋白的上调,即Ⅵ型胶原α2(Col6α2)、玻璃连蛋白(Vtn)和整合素β(Itgβ)。我们得出结论:与假组相比,在心肌梗死后 14 天的心脏纤维化早期,原发性心肌中 Col6α2、Vtn 和 Itgβ 的表达水平显著升高(P < 0.05)。这一观察结果表明,ECM 与受体的相互作用可能会影响心肌梗死后心脏纤维化的进展。
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引用次数: 0
Prognostic evaluation of relapse based on squamous cell carcinoma antigen, CXCR2, and CD44V6 blood levels in patients with Stage I–II squamous cell lung cancer 基于 I-II 期鳞状细胞肺癌患者血液中鳞状细胞癌抗原、CXCR2 和 CD44V6 水平的复发预后评估
Pub Date : 2023-12-28 DOI: 10.36922/gtm.2209
A. Tahanovich, M. Kauhanka, Zhanna A. Rutkovskaya, Ekaterina A. Khotko, O. V. Gotko, Violetta I . Prokhorova
Lung cancer, the leading cause of cancer-related mortality, predominantly exists as non-small cell lung cancer, accounting for approximately 85% of cases and comprising adenocarcinoma, squamous cell carcinoma (SCC), and large cell carcinoma as the three most prevalent histological subtypes. This study focused on investigating pre- and post-operative concentrations of SCC antigen in blood serum, as well as the percentage of CXCR2-containing lymphocytes and CD44v6-containing monocytes in blood cell populations among patients with Stages I–II squamous cell lung cancer (SCLC) within 1 year after tumor resection. The primary objective was to assess their potential for predicting relapse. The study cohort comprised 57 patients (32 men and 25 women) with newly diagnosed squamous cell lung cancer (21 at stage I and 36 at stage II). Following tumor resection, categorized as R0 in terms of surgical intervention, all parameters were examined before surgery and at 3 weeks, 3 months, and 6 months postoperatively. Analysis revealed that the probability of relapse could be accurately predicted, ranging from 68.4% to 89.5%, based on differences in SCC antigen concentration, the percentage of lymphocytes with CXCR2, and monocytes with the CD44v6 receptor during various post-operative intervals. Subsequent regression analysis and the formulation of a combined model incorporating the above-mentioned parameters led to an enhanced predictive value for tumor recurrence, reaching 96.5% accuracy (with specificity at 95.6% and sensitivity at 100%). These results indicate the potential utility of the combined model as an additional marker for predicting postoperative relapse in patients with Stage I–II SCLC.
肺癌是癌症相关死亡的主要原因,主要表现为非小细胞肺癌,约占病例总数的 85%,包括腺癌、鳞状细胞癌(SCC)和大细胞癌这三种最常见的组织学亚型。这项研究的重点是调查 I-II 期鳞状细胞肺癌(SCLC)患者在肿瘤切除术后一年内血清中 SCC 抗原的术前和术后浓度,以及血细胞群中含有 CXCR2 的淋巴细胞和含有 CD44v6 的单核细胞的百分比。主要目的是评估它们预测复发的潜力。研究队列包括 57 名新确诊的鳞状细胞肺癌患者(32 名男性和 25 名女性)(21 名 I 期患者和 36 名 II 期患者)。肿瘤切除后,手术干预被归类为 R0,所有参数在术前、术后 3 周、3 个月和 6 个月进行了检查。分析表明,根据术后不同时间段内 SCC 抗原浓度、含 CXCR2 的淋巴细胞和含 CD44v6 受体的单核细胞百分比的差异,可以准确预测复发的概率,范围从 68.4% 到 89.5%。随后的回归分析和结合上述参数的综合模型使肿瘤复发的预测值得到了提高,准确率达到了 96.5%(特异性为 95.6%,敏感性为 100%)。这些结果表明,该组合模型可作为预测 I-II 期 SCLC 患者术后复发的额外指标。
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引用次数: 0
Epigenetic perspective on atherosclerotic cardiovascular diseases: The holistic principle of systems biology and epigenetic reasoning 从表观遗传角度看动脉粥样硬化性心血管疾病:系统生物学和表观遗传推理的整体原则
Pub Date : 2023-12-28 DOI: 10.36922/gtm.1868
K. Lourida, George E. Louridas
Atherosclerosis and coronary artery disease are the main causes of impairment and cardiac death, placing a significant burden on our health-care system. This review focuses on elucidating the involvement of various epigenetic mechanisms in the genesis and progression of cardiovascular diseases (CVDs), particularly chronic CVDs. The deregulation of epigenetic mechanisms plays a crucial role in the progression of CVDs, prompting exploration into novel preventive approaches. Advancements in molecular procedures, network-based approaches, and data analysis have identified new targets in CVDs, permitting the utilization of individualized epigenetic factors for personalized diagnosis and treatment. While promising for improving diagnostic and prognostic assessments, the clinical implementation of epigenetic biomarkers lags behind. Multicenter clinical documentation in a large sample population is crucial to confidently ascertain the clinical utility of specific epigenetic biomarkers. Of particular interest is the interplay between epigenetics and the conflict between the gene-based reductionist theory and the holistic principle of systems biology (SB). The holistic principle analyzes the structural organization and regulation of biological networks, influencing the genesis and progression of complex cardiac diseases like CVDs. This review emphasizes the complexity of CVDs, elucidates the interrelationship between disease networks and epigenetic mechanisms, and highlights the importance of the holistic principle of SB, coupled with artificial intelligence, in clarifying this interrelationship. The constant and uninterrupted epigenetic impact holds immense potential for advancing our understanding of disease progression and treatment across cells and tissues. Despite these advancements, the full integration of the epigenetic impact into medical practice remains incomplete, with limited utilization in clinical applications. Nevertheless, it is likely that in the near future, the epigenetic regulation of gene expression, with its lifelong and extended effects on health, will become an integral part of everyday clinical practice.
动脉粥样硬化和冠状动脉疾病是造成机体损伤和心源性死亡的主要原因,给我们的医疗保健系统带来了沉重的负担。本综述重点阐明各种表观遗传机制参与心血管疾病(CVDs),尤其是慢性心血管疾病的发生和发展。表观遗传机制的失调在心血管疾病的发展过程中起着至关重要的作用,促使人们探索新的预防方法。分子程序、基于网络的方法和数据分析的进步已经确定了心血管疾病的新靶点,从而可以利用个体化的表观遗传因素进行个性化诊断和治疗。虽然表观遗传生物标志物有望改善诊断和预后评估,但其临床应用却相对滞后。要确信特定表观遗传生物标志物的临床效用,在大样本人群中进行多中心临床记录至关重要。特别值得关注的是表观遗传学与基于基因的还原论和系统生物学(SB)整体原则之间的冲突。整体原则分析生物网络的结构组织和调控,影响心血管疾病等复杂心脏疾病的发生和发展。这篇综述强调了心血管疾病的复杂性,阐明了疾病网络与表观遗传机制之间的相互关系,并强调了系统生物学整体原理与人工智能相结合在阐明这种相互关系方面的重要性。表观遗传学持续不间断的影响蕴含着巨大的潜力,可促进我们对跨细胞和跨组织疾病进展和治疗的理解。尽管取得了这些进展,但将表观遗传学的影响全面融入医疗实践的工作仍未完成,临床应用有限。不过,在不久的将来,基因表达的表观遗传调控及其对健康的终身和长期影响很可能会成为日常临床实践中不可或缺的一部分。
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引用次数: 0
Management of persistent genital arousal disorder: A case report 持续性生殖器唤醒障碍的治疗:病例报告
Pub Date : 2023-12-26 DOI: 10.36922/gtm.2341
Tainara Tavares Menchete, Rodolfo Silva Bertoli, Amanda Aguiar Loureiro, Ana Carolina Japur de Sá Rosa-e-Silva, Fabiola Dach, J. Troncon, Debora Aiesha Leite Cantelli, Lúcia Alves da Silva Lara
Persistent genital arousal disorder (PGAD) is a pathological condition characterized by intrusive, unwanted, and distressing symptoms related to spontaneous and prolonged sensations of genital arousal in the absence of sexual desire or stimulation that may compromise the individual’s quality of life. Here, we report the case of a woman who suffered from PGAD probably associated with multiple alterations in the spinal column and Tarlov cyst, which caused the compression of nerve roots and the abnormal sensitivity of the genital region.
持续性生殖器唤起障碍(PGAD)是一种病理状态,其特征是在没有性欲或性刺激的情况下,生殖器会自发地长时间唤起,从而产生干扰性、不想要和令人痛苦的症状,这些症状可能会影响患者的生活质量。在此,我们报告了一例患有 PGAD 的女性患者,她的病因可能与脊柱的多重改变和 Tarlov 囊肿有关,这导致了神经根受压和生殖器区域的异常敏感性。
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引用次数: 0
期刊
Global translational medicine
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