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  北京4月17日电(记者孙自法)国际知名学术期刊《自然》北京时间4月16日夜间同期在线发表两篇神经学论文称,研究人员通过开展两项独立的临床试验,展示出干细胞疗法对帕金森病的安全性。

  这两篇论文分别研究了利用人诱导多能干细胞和人类胚胎干细胞产生的细胞,对帕金森病的临床试验。后续,其研究还需要进一步来测试这些疗法的有效性和临床获益。

  据介绍,帕金森病是一种神经退行性疾病,其特征为逐渐丧失那些产生多巴胺(一种神经递质)的神经元。尽管目前的治疗方法如左旋多巴等能在早期减轻症状,但效果会逐渐下降,而且经常伴随着运动障碍(不自主运动)等副作用。细胞疗法,特别是补充脑部生产多巴胺的神经元(多巴胺能神经元)的疗法,或有望提供更有效、副作用更少的治疗方法。

  在其中一项研究中,为检验帕金森病细胞疗法的安全性和潜在副作用,论文共同通讯作者、日本京都大学高桥良辅(RyosukeTakahashi)和高桥淳(JunTakahashi)和同事进行了一项I/II期临床试验。7名患者(年龄在50-69岁)接受了多巴胺能前体细胞(来自人诱导多能干细胞)移植,区域为双侧大脑。在研究持续的24个月中,没有报告严重副作用,移植的细胞产生了多巴胺,没有过度生长或形成肿瘤(一种干细胞疗法的相关风险)。

  研究者还在继续参与试验进行有效性评估的6位患者中发现,有4位在未服用标准药物的情况下观察到帕金森病相关运动症状减少,有5位服药期间观察到相关运动症状减少,这些为研究的次要结果。但这些结果因测量而异,有些测量方法显示的变化极小。

  在另一项单独的I期临床试验中,论文第一作者兼通讯作者、美国纪念斯隆-凯特琳癌症中心V.Tabar和同事及合作者一起,研究了来自人胚胎干细胞的多巴胺能前体细胞产品的安全性。12名患者(年龄中位数为67岁)接受了手术移植多巴胺能前体细胞产品到双侧大脑壳核。5名患者接受了低剂量(每侧壳核90万细胞),7名接受了高剂量(每侧壳核270万细胞)。

  这些细胞产品的耐受普遍良好,在后续18个月中没有报告与疗法相关的严重副作用。没有出现运动障碍的迹象,该副作用此前与胚胎组织移植治疗帕金森病有关。此外,在低剂量和高剂量组均观察到一些运动功能的改善(研究的次要结果),但改善程度依不同测量参数而异。

  这两项临床试验都证实了异体(非自身)干细胞衍生细胞产品移植治疗帕金森病的安全性。不过,这两项研究存在一些局限性,包括样本量小,两项研究均为开放标签试验(研究者和患者都知道谁接受了何种类型的治疗)。

  《自然》同期还发表同行专家的“新闻与观点”文章认为,该两项独立试验都显示出安全性,并暗示可能有效,这朝着在更广泛社会中开展这种帕金森病细胞疗法迈出了重要一步。(完) 新闻结尾 猫伯爵黑x白-当真相浮出水面,家族关系面临崩溃的边缘!的相关文章
美国财长贝森特预计美国和韩国下周就贸易达成谅解协议
午盘:联储官员称6月可能降息 美股继续上扬欧洲债市:欧洲债券上涨 德国国债表现落后特朗普的贸易战给企业带来更多阴霾景田博士软饮料销量起飞,但咖啡成本限制了利润增长宣布“对等关税”后 美民众对特朗普经济政策的不满情绪日益增长随着收益率下降、美元波动,市场重新评估 “抛售美国资产” 交易英国央行行长:目前英国不太可能陷入经济衰退特朗普抨击哈佛是“自由派烂摊子” 要求自家企业炒掉该校律师俄罗斯央行:截至4月18日国际储备总额达6813亿美元英国央行行长:对美元失去储备货币地位的担忧“过头”普京:1月至2月俄罗斯GDP年增长率为1.9%美国7年期国债中标收益率小幅高于发行前交易水平美国2024年烈酒出口创纪录 受关税担忧推动斯塔默政府实施系列税改后 亿万富豪正在离开英国尾盘:美股继续上扬 科技股领涨特朗普称已为俄乌问题设最后期限 届时美国态度或生变周四美国WTI原油收高0.8%欧洲央行将考虑对货币政策战略进行调整 以便更灵活应对价格冲击
欧洲主要股指收盘集体上涨 德国DAX30指数收涨0.67%谷歌母公司Alphabet一季度营收902.34亿美元 净利润同比增长46%日本财务大臣:与美国财长的会谈中未提及具体汇率水平或目标英特尔第二季度展望疲软 将裁员以削减成本昨夜今晨国际财经热点一览_2025年4月25日_财经新闻英特尔第一财季营收127亿美元 净亏损同比扩大115%特朗普抨击哈佛是“自由派烂摊子” 自家企业旋即炒掉该校律师韩美同意在7月初就关税和经济合作等问题达成一揽子协议
白宫国家经济委员会主任:最高级别的税收谈判代表下周将举行会议韩国与美国就贸易谈判框架达成原则性共识纽约期金涨近1.9%,费城金银指数收涨超1.8%
特朗普称有望与挪威达成贸易协议 但未承诺关税让步收盘:美股连续第三日收高 市场聚焦关税与联储降息可能性原油:WTI原油期货收涨 贸易谈判释放乐观信号周四热门中概股多数上涨 台积电涨4.04%,阿里巴巴涨0.27%G20轮值主席国南非警告贸易摩擦升级 会后未发布正式公报美国债市:国债上涨 7年期美债招标结果表现稳健后保持涨势4月24日美股成交额前20:亚马逊与英伟达称AI中心建设未放缓纽约汇市:美元下跌 关税疑虑挥之不去观点综述:美元恐陷入结构性跌势Alphabet一季度营收和利润均超预期 得益于谷歌搜索广告业务强劲表现OpenAI对标DeepSeek?向免费用户推出轻量版Deep Research昨夜今晨国际外盘头条一览_2025年4月25日_财经新闻特朗普计划向沙特提出逾1000亿美元的军售方案美国股市:标普500指数三连升 美联储降息预期与特朗普贸易言论齐发力
白宫国家经济委员会主任:最高级别的税收谈判代表下周将举行会议韩国与美国就贸易谈判框架达成原则性共识纽约期金涨近1.9%,费城金银指数收涨超1.8%

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  • 美国财长贝森特预计美国和韩国下周就贸易达成谅解协议 美国财长贝森特预计美国和韩国下周就贸易达成谅解协议 美国财长贝森特预计美国和韩国下周就贸易达成谅解协议 欧洲主要股指收盘集体上涨 德国DAX30指数收涨0.67%谷歌母公司Alphabet一季度营收902.34亿美元 净利润同比增长46%日本财务大臣:与美国财长的会谈中未提及具体汇率水平或目标英特尔第二季度展望疲软 将裁员以削减成本昨夜今晨国际财经热点一览_2025年4月25日_财经新闻英特尔第一财季营收127亿美元 净亏损同比扩大115%特朗普抨击哈佛是“自由派烂摊子” 自家企业旋即炒掉该校律师韩美同意在7月初就关税和经济合作等问题达成一揽子协议