CN118078789A - 阿托莫西汀在制备增加骨血管h亚型内皮细胞药物中的应用 - Google Patents
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Abstract
本发明公开了阿托莫西汀在制备增加骨血管H亚型内皮细胞药物中的应用,本发明公开阿托莫西汀和甲磺酸去铁胺的组合物在制备增加骨血管H亚型内皮细胞的药物、增加骨密度的药物或治疗骨质疏松的药物中的应用:本发明发现阿托莫西汀与甲磺酸去铁胺联合用药能够进一步促进H亚型骨血管内皮细胞的生成,H亚型骨血管内皮细胞的生成使得与其偶联的骨密度增加,促进骨生成。采用本发明联合用药,可实现对老年性骨质疏松的治疗。
Description
技术领域
本发明涉及骨和血管,利用药物联合应用控制骨骼内血管内皮细胞的特异性,具体涉及阿托莫西汀在制备增加骨血管H亚型内皮细胞药物中的应用。
背景技术
骨质疏松症是以骨量丢失和骨微结构退变为特点的骨骼疾病,可导致骨骼脆性增加,发生骨折的风险也随之变高。目前,普遍接受的两种骨质疏松的危险因素是雌激素水平降低和高龄。已有的治疗骨质疏松的药物中,绝大多数都是以阻止破骨细胞进一步破骨降低骨密度为药理学原理的,但对于骨质已经大量流失的老年人来说,帮助不大。
血管内皮细胞是分布在血管内壁的单层细胞,具有丰富的异质性与器官特异性。通过密集的毛细血管分支,血管内皮在各个器官内与几乎所有的细胞建立联系。在不同的器官当中,血管内皮有着显著的形态特异性,同时,不同器官的血管内皮细胞有着不同的转录因子簇,对应不同的器官和需求表达分泌不同的血管分泌因子以支持器官的生理功能。骨内的血管内皮被发现存在丰富的异质性,其中一类亚型血管内皮,H亚型骨血管内皮,能够促进骨质生成,骨血管H亚型内皮主要成拱柱状分布在骨生长板及骨内膜附近,是一类生长代谢高度活跃的内皮细胞亚型,它通过Notch信号通路将自身和骨代谢偶联在一起,促进骨质生成。随着年龄的增长,H亚型内皮细胞中CD31与EMCN的表达降低,转变为L亚型内皮,不再保留活跃代谢生长和促进骨生成的性质。H亚型内皮细胞的体内水平与缺氧诱导因子、Notch信号通路、血流、由破骨细胞前体分泌的血小板衍生生长因子以及由成骨细胞分泌的衔接蛋白Schnurri311相关。
注射用甲磺酸去铁胺是一种成熟的化学药,适应症为1.用于治疗方面治疗慢性铁负荷过重,例如输血引起的含铁血黄素沉着病,如重症地中海贫血、铁粒幼细胞性贫血、自身免疫性溶血性贫血及其他慢性贫血。特发性(原发性)血色病者因伴随疾病(例如严重贫血,心脏疾病,低蛋白血症)妨碍了静脉切开放血术。迟发性皮肤卟啉病引起的铁负荷过载,不能进行静脉切开。治疗急性铁中毒。治疗晚期肾功能衰竭(持续透析)患者的慢性铝负荷过载,伴有下列情况:铝相关的骨病和/或透析性脑病和/或-铝相关性贫血。2.用于诊断方面用于诊断铁或铝负荷过载。有研究表明,通过药物甲磺酸去铁胺能促进L亚型血管内皮逆向转变成H亚型,增加老年C57BL/6J雄鼠的骨密度。
阿托莫西汀为一种用于治疗注意力不足过动症的药物,属于非中枢神经刺激药物。主要副作用有:口干、疲倦等。该药为去甲肾上腺素再摄取抑制剂。主要用来治疗注意力不足过动症患者的症状。去甲肾上腺素是脑中调节注意力、搏动性和活动水平的重要物质,该药主要透过阻断或减缓去甲肾上腺素的再摄取使得去甲肾上腺素浓度增加而发挥作用。
发明内容
为了解决现有技术中的不足,本发明的目的是提供阿托莫西汀在制备增加骨血管H亚型内皮细胞药物中的应用。
本发明的具体技术方案如下:
本发明第一方面提供阿托莫西汀在制备(1)-(3)任一项所述药物中的应用:
(1)增加骨血管H亚型内皮细胞的药物;
(2)增加骨密度的药物;
(3)治疗骨质疏松的药物。
本发明第二方面提供阿托莫西汀和甲磺酸去铁胺的组合物在制备(1)-(3)任一项所述药物中的应用:
(1)增加骨血管H亚型内皮细胞的药物;
(2)增加骨密度的药物;
(3)治疗骨质疏松的药物。
进一步地,上述应用中,所述骨质疏松为老年性骨质疏松。
本发明第三方面提供一种增加骨血管H亚型内皮细胞的药物组合物,所述药物组合物包含阿托莫西汀和甲磺酸去铁胺。
本发明第四方面提供一种增加骨密度的药物组合物,所述药物组合物包含阿托莫西汀和甲磺酸去铁胺。
本发明第五方面提供一种治疗骨质疏松的药物组合物,所述药物组合物包含阿托莫西汀和甲磺酸去铁胺。
进一步地,所述骨质疏松为老年性骨质疏松。
进一步地,上述药物组合物还包含药学上可接受的载体。
进一步地,上述药物组合物的给药方式为:腹腔注射甲磺酸去铁胺,灌胃阿托莫西汀;
优选地,所述药物组合物的给药方式为:先隔天腹腔注射甲磺酸去铁胺一定时间,之后隔天腹腔注射甲磺酸去铁胺的同时灌胃阿托莫西汀。
进一步地,上述药物组合物的施用对象为小鼠时,每次腹腔注射甲磺酸去铁胺的用药剂量为300mg/kg,每次灌胃阿托莫西汀的用药剂量为10mg/kg。
本发明的有益效果为:
本发明发现阿托莫西汀与甲磺酸去铁胺联合用药能够进一步促进H亚型骨血管内皮细胞的生成,H亚型骨血管内皮细胞的生成使得与其偶联的骨密度增加,促进骨生成。
针对老年人骨质已经大量流失的问题,采用本发明联合用药,通过促进H亚型骨血管内皮细胞的生成从而促进骨质生成,可实现对老年性骨质疏松的治疗。
附图说明
图1为小鼠长骨内血管内皮的荧光成像图与骨骼microCT成像图。Control:对照组,DFM:单独注射甲磺酸去铁胺组,DFM+ATX:腹腔注射甲磺酸去铁胺与灌胃阿托莫西汀联合用药组。图1A,血管内皮荧光成像图,表征内皮细胞异质性变化。图1B,骨骼microCT成像图。图1C,骨参数变化,n=3。
具体实施方式
为了更清楚地理解本发明,现参照下列实施例及附图进一步描述本发明。实施例仅用于解释而不以任何方式限制本发明。实施例中,各原始试剂材料均可商购获得,未注明具体条件的实验方法为所属领域熟知的常规方法和常规条件,或按照仪器制造商所建议的条件。
实施例1
本实施例设置对照组(Control),单独注射甲磺酸去铁胺组(DFM),腹腔注射甲磺酸去铁胺与灌胃阿托莫西汀联合用药组(DFM+ATX)。每组60周龄老年C57小鼠3-4只。各组的处理如下:
对照组(Control):注射生理盐水。
单独注射甲磺酸去铁胺组(DFM):隔天腹腔注射甲磺酸去铁胺四周,用药剂量为300mg/kg
腹腔注射甲磺酸去铁胺与灌胃阿托莫西汀联合用药组(DFM+ATX):先隔天腹腔注射甲磺酸去铁胺两周,用药剂量为300mg/kg。从第三周开始,隔天腹腔注射甲磺酸去铁胺的同时灌胃阿托莫西汀,甲磺酸去铁胺的用药剂量为300mg/kg,阿托莫西汀的用药剂量为10mg/kg,联合用药四周。
各组给药结束后,取样小鼠腿骨观察长骨内骨血管内皮细胞异质性,具体操作为:取小鼠腿骨经固定、脱钙、脱水、包埋、切片等处理,采用两种内皮细胞特异性标记(CD31、EMCN)进行免疫荧光染色,激光共聚焦显微镜观察长骨中CD31+血管(绿色)、EMCN+血管(红色)、CD31+EMCN+血管(H亚型血管),黄色的血管代表CD31+EMCN+共定位的H亚型血管。
各组给药结束后,取样小鼠腿骨测量长骨骨密度,具体操作为:取材的骨标本经4%PFA固定,在相同条件下行MicroCT扫描。统计骨参数。
结果如图1。相比对照组,单独腹腔注射甲磺酸去铁胺用药组,长骨内H亚型骨血管内皮细胞上升,同时骨密度上升,而联合灌胃阿托莫西汀组进一步提升了H亚型骨血管内皮细胞数量,骨密度也进一步上升。本发明通过腹腔注射甲磺酸去铁胺与灌胃阿托莫西汀联合用药,改变骨血管内皮细胞异质性,同时影响骨密度。
显然,上述实施例仅仅是为清楚地说明所作的举例,而并非对实施方式的限定。对于所属领域的普通技术人员来说,在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本发明创造的保护范围之中。
Claims (10)
1.阿托莫西汀在制备(1)-(3)任一项所述药物中的应用:
(1)增加骨血管H亚型内皮细胞的药物;
(2)增加骨密度的药物;
(3)治疗骨质疏松的药物。
2.阿托莫西汀和甲磺酸去铁胺的组合物在制备(1)-(3)任一项所述药物中的应用:
(1)增加骨血管H亚型内皮细胞的药物;
(2)增加骨密度的药物;
(3)治疗骨质疏松的药物。
3.根据权利要求1或2所述的应用,其特征在于,所述骨质疏松为老年性骨质疏松。
4.一种增加骨血管H亚型内皮细胞的药物组合物,其特征在于,所述药物组合物包含阿托莫西汀和甲磺酸去铁胺。
5.一种增加骨密度的药物组合物,其特征在于,所述药物组合物包含阿托莫西汀和甲磺酸去铁胺。
6.一种治疗骨质疏松的药物组合物,其特征在于,所述药物组合物包含阿托莫西汀和甲磺酸去铁胺。
7.根据权利要求6所述的药物组合物,其特征在于,所述骨质疏松为老年性骨质疏松。
8.根据权利要求4-7任一项所述的药物组合物,其特征在于,所述药物组合物还包含药学上可接受的载体。
9.根据权利要求4-7任一项所述的药物组合物,其特征在于,所述药物组合物的给药方式为:腹腔注射甲磺酸去铁胺,灌胃阿托莫西汀;
优选地,所述药物组合物的给药方式为:先隔天腹腔注射甲磺酸去铁胺一定时间,之后隔天腹腔注射甲磺酸去铁胺的同时灌胃阿托莫西汀。
10.根据权利要求9所述的药物组合物,其特征在于,所述药物组合物的施用对象为小鼠时,每次腹腔注射甲磺酸去铁胺的用药剂量为300mg/kg,每次灌胃阿托莫西汀的用药剂量为10mg/kg。
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