NBScience

Liver Regeneration in Cirrhosis: Pathophysiological, Biochemical, Molecular, and Clinical Mechanisms Across Different Stages as an Alternative to Liver Transplantation Early-Stage Cirrhosis (Compensated Cirrhosis) In the early stages of cirrhosis, liver architecture is still relatively preserved despite the onset of fibrotic changes. The regenerative capacity of hepatocytes remains partially functional, yapma Devamını oku

Abstract Stem cell-derived exosomes represent a rapidly evolving frontier in regenerative medicine, acting as potent mediators of intercellular communication and mimicking many therapeutic effects of parent stem cells. Recent research highlights their role in modulating immune responses, doku onarımını teşvik etmek, and enhancing cell survival. This comprehensive review synthesizes current knowledge Devamını oku

Abstract Cardiovascular diseases (CVD'ler) küresel çapta ölümlerin önde gelen nedeni olmaya devam ediyor. Despite major advancements in pharmacological and surgical treatments, myocardial tissue regeneration remains a significant challenge. Stem cell-based therapy, particularly intravenous (IV) stem cell administration, has emerged as a promising modality to repair, yeniden oluşturmak, and restore cardiac function. Bu makale Devamını oku

胚胎干细胞在白内障发病机制中的作用机制 胚胎干细胞（ESC）来源于囊胚内细胞团，具有多能性，能够分化为三胚层的各种细胞类型，包括眼组织细胞谱系。经静脉注射后，ESC主要通过旁分泌信号调控、系统性免疫调节和细胞替代机制发挥其治疗效应。 在白内障治疗的背景下，ESC静脉注射的关键益处包括： 抗炎作用： ESC分泌细胞因子和外泌体，可调节系统性及局部的炎症反应。由于慢性炎症和氧化应激是晶状体上皮细胞（LECs）凋亡和晶状体混浊的主要诱因，ESC衍生的因子可有效缓解这些病理过程。 降低氧化应激： ESC通过上调超氧化物歧化酶（SOD）、过氧化氢酶（Catalase）和谷胱甘肽过氧化物酶等抗氧化酶，增强机体内源性抗氧化系统，从而保护晶状体蛋白免受氧化损伤与聚集。 促进晶状体上皮细胞再生： ESC可分化为类晶状体细胞，或分泌成纤维细胞生长因子（FGF）、肝细胞生长因子（HGF）、类胰岛素生长因子-1（IGF-1）等生长因子，支持LECs的再生与维持，有助于晶状体透明性。 抗纤维化活性： ESC通过下调TGF-β信号通路，可防止LECs发生上皮-间质转化（EMT），该过程是导致后发性囊膜混浊（PCO）的主要原因之一，也是白内障术后常见并发症。 免疫调节作用： ESC调节免疫细胞活性，降低系统性促炎因子的水平（如IL-6、TNF-α），从而优化眼部微环境，为组织修复提供有利条件。 临床效果与预期益处 虽然目前临床数据仍在积累中，但初步观察及动物/早期人体研究显示，ESC静脉注射治疗白内障可能带来如下效果： 结论 静脉注射胚胎干细胞为白内障的治疗提供了一种具有潜力的再生医学路径。它不仅缓解症状，更有望从病理机制层面（如氧化应激、炎症反应及上皮细胞退化）进行干预，可能彻底改变传统以手术为主的白内障治疗模式，迈向一种以“生物修复”为核心的全新医学体系。

专家视角：静脉注射胚胎干细胞治疗半月板软骨再生的潜力 半月板损伤和退变是导致膝关节功能障碍和疼痛的主要原因之一，尤其常见于运动员和中老年人群。半月板是膝关节内的一种纤维软骨结构，在负重分配、冲击吸收、关节稳定性和润滑中起关键作用。Fakat，由于半月板内三分之二区域血供极差，其自身的修复能力极为有限。 半月板损伤的病因与发病机制 半月板损伤主要分为以下两类： 其发病机制包括： 上述机制导致半月板力学性能下降，并加速关节退化。 胚胎干细胞静脉注射对半月板再生的作用机制 胚胎干细胞（ESC）具有多能性和高度再生能力，代表了前沿的再生医学治疗方案。经静脉注射后，ESC主要通过旁分泌信号、İmmünomodülasyon、向损伤区域归巢及营养支持来发挥治疗作用，而非单纯依赖细胞移植。 其关键作用机制如下： 1. 抗炎作用 ESC通过分泌抗炎因子（如IL-10、TGF-β）并抑制促炎因子（如IL-1β、TNF-α），降低局部和全身炎症，延缓基质降解。 2. 归巢到损伤区域 ESC通过趋化因子通路（如SDF-1/CXCR4轴）迁移至受损的半月板部位，释放生长因子并激活局部修复机制。 3. 促进基质修复与细胞增殖 ESC促进胶原蛋白I/II、聚集蛋白（Aggrecan）、润滑素等关键ECM成分的合成，并刺激纤维软骨细胞的增殖，抑制细胞凋亡。 4. 促进血管生成与供血改善 虽然半月板内侧无血管，但ESC可通过分泌VEGF、血管生成素等促进周边血管新生，提升营养供应和修复能力。 5. 免疫调节与抗纤维化 ESC通过抑制TGF-β1相关的纤维化信号，降低α-SMA和III型胶原表达，从而防止病理性组织重塑，保留半月板生物力学性能。 治疗后的临床效果与预期结果 虽然临床应用仍在早期阶段，但已有研究与观察表明，ESC静脉治疗后可见如下效果： 结论 静脉注射胚胎干细胞为半月板损伤的治疗提供了一种非侵入性、具有再生潜力的新思路。它不仅针对症状，更从根源上干预病理过程，如炎症、基质破坏和细胞凋亡等，从而实现组织再生与功能恢复。未来通过更多临床试验验证其安全性与有效性后，ESC疗法有望成为半月板损伤治疗的新标准。

Uzman Bakış Açısı: Therapeutic Potential of Intravenous Embryonic Stem Cell Therapy for Meniscus Cartilage Regeneration Meniscal injuries and degeneration are among the most common causes of knee dysfunction and joint pain, özellikle sporcularda ve yaşlanan nüfusta. menisküs, dizde fibrokartilajinöz yapı, plays a crucial role in Devamını oku

Potential Benefits of Intravenous Embryonic Stem Cell Therapy in Cataract Patients: An Expert Overview Cataract is a progressive ocular condition characterized by the opacification of the eye’s natural lens, leading to visual impairment and, ağır vakalarda, körlük. The pathogenesis of cataract is multifactorial, involving oxidative stress, mitokondriyal fonksiyon bozukluğu, protein Devamını oku

Early Life and Education Viktor Hryhorovych Lizohub was born on October 12, 1947, in the village of Trebukhiv, Brovary district, Kyiv region, Ukrayna. He graduated from the Kyiv Medical Institute named after O.O. Bohomolets in 1972. İçinde 1974, he completed a clinical residency in neurology at the Institute of Gerontology Devamını oku

Soyut:This study explores the correlation between corporate executive controversies and market performance, using Tesla Inc. as a case study. erken 2025, Tesla’s sales in several European markets experienced a significant decline, coinciding with a series of public controversies surrounding its CEO, Elon Musk. By examining sales data, consumer sentiment Devamını oku

Soyut:The aviation industry is undergoing a transformative shift toward sustainable operations, with fuel efficiency being a critical focus. This paper presents the development of a novel film-based surface coating for aircraft, inspired by the microstructure of shark skin. The biomimetic design, characterized by overlapping micro-scale riblets akin to dermal denticles, Devamını oku

Muscular Dystrophy MSC therapy has shown potential in improving muscle strength, increasing mobility, and reducing muscle wasting in patients with various forms of muscular dystrophy. MSCs work by promoting the regeneration of muscle fibers, stimulating the production of muscle precursor cells, ve fibrozisin azaltılması. They secrete growth factors that enhance Devamını oku

Miyokard İnfarktüsü (Kalp krizi) MSC therapy for myocardial infarction has shown potential in improving heart function, reducing scar tissue, and enhancing tissue regeneration in the heart. MSCs work by secreting growth factors that stimulate the regeneration of heart muscle cells (kardiyomiyositler) ve iltihabı azaltın. They also promote angiogenesis (formation of Devamını oku

Rheumatoid Arthritis MSC therapy has shown promise in improving joint mobility, ağrıyı azaltmak, and decreasing inflammation in patients with rheumatoid arthritis. MSCs exert their effects by modulating the immune system, particularly by reducing the activity of pro-inflammatory T cells and cytokines. MSCs also promote tissue repair by stimulating the regeneration Devamını oku

Sickle Cell Anemia MSC therapy for sickle cell anemia has shown potential in reducing episodes of pain, improving red blood cell function, and decreasing anemia-related fatigue. MSCs work by secreting growth factors that support the regeneration of blood cells and enhance bone marrow function. They also help reduce inflammation and Devamını oku

Multiple Sclerosis In multiple sclerosis, Otolog MSC'lerin intravenöz infüzyonunun kas spastisitesini azalttığı gösterilmiştir., yürüme yeteneğini geliştirmek, ve yorgunluğu hafifletmek. Hücreler etkilerini nörotrofik faktörlerin salgılanması yoluyla sinir korumasını teşvik ederek gösterirler., inflamatuar demiyelinizasyonun azaltılması, ve otoimmüniteyi azaltmak için bağışıklık sistemini modüle etmek. MSCs have Devamını oku