CN110038002B - 丹酚酸a防治肌肉萎缩、肌病及肌肉骨骼并发症的用途 - Google Patents
丹酚酸a防治肌肉萎缩、肌病及肌肉骨骼并发症的用途 Download PDFInfo
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- CN110038002B CN110038002B CN201810033315.4A CN201810033315A CN110038002B CN 110038002 B CN110038002 B CN 110038002B CN 201810033315 A CN201810033315 A CN 201810033315A CN 110038002 B CN110038002 B CN 110038002B
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- salvianolic acid
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- diabetic
- muscle atrophy
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Abstract
本发明涉及中药单体丹酚酸A新药理作用,及其在制备预防、缓解和/或治疗各种原因,包括糖尿病、遗传、肌营养不良症及神经功能障碍导致的肌肉萎缩、肌病、肌肉骨骼并发症及其并发症产品中的用途。本发明的优益之处在于:丹酚酸A具有延缓和治疗各种原因及糖尿病导致的肌萎缩;具有增加骨骼肌力量,改善骨骼肌组织微循环,增加骨骼肌重量,改善骨骼肌组织病理损伤的药理作用。丹酚酸A为丹参中提取的单体化合物、毒性低,原材料资源广泛,具有很好的应用和开发前景。可用于制备预防、缓解和治疗各种原因导致的肌肉萎缩、糖尿病肌病、糖尿病肌萎缩,糖尿病肌肉骨骼并发症及其并发症。
Description
技术领域
本发明涉及丹酚酸A在制备预防、缓解和/或治疗各种原因,包括糖尿病及相关疾病、遗传、肌营养不良症及神经功能障碍导致的肌肉萎缩、肌病、肌肉骨骼并发症及其并发症产品药物中的应用,属于医药技术领域。
背景技术
肌肉萎缩是一种疾病状态,主要发生在多种慢性疾病和衰老过程中。可严重影响生活质量,在严重的情况下可导致死亡。骨骼肌萎缩指横纹肌营养障碍,肌肉纤维变细甚至消失等导致的肌肉体积缩小,肌肉收缩能力障碍等坏人体肌肉的一组疾病。病理生理过程为进行性骨骼肌萎缩,肌肉蛋白质缺失,和肌肉细胞或组织的死亡。病因主要有神经源性肌萎缩、肌源性肌萎缩、废用性肌萎缩和其他原因性肌萎缩。肌萎缩患者由于肌肉萎缩、肌无力而长期卧床,易并发肺炎、褥疮等,给患者生命构成极大的威胁。高血糖,胰岛素抵抗,肌肉组织脂肪浸入和外周神经功能障碍是可能出现肌肉功能障碍的原因(Diabetes ResClin Pract,2016,117:32-8)。但有研究发现,在老年糖尿病病人,糖尿病肌病与血糖控制和微血管并发症的相关性并不密切。在糖尿病状态下,骨骼肌可出现肌肉重量降低、肌肉无力萎缩等。糖尿病肌病可导致患者极度疲劳感,严重影响生活质量。虽然运动可改善骨骼肌的萎缩状态,但对于大多数患者来说不容易坚持导致作用有限。如果配合有效药物进行治疗,将改善病情,大大提高患者的生活质量。作为肌肉萎缩的评定,肌肉的体积重量及收缩功能是最为敏感的指标。
糖尿病是以血中葡萄糖水平增高为特征的代谢性疾病群。引起血糖增高的病理生理机制是胰岛素分泌缺陷及胰岛素作用缺陷。在糖尿病状态下,骨骼肌可出现肌肉重量降低、肌肉无力萎缩等(Lancet,1953,1(6768):968-9.)。肌肉萎缩和功能障碍是糖尿病的主要并发症之一(Nat Rev Drug Discov,2015,14(1):58-74)。糖尿病肌病可导致患者极度疲劳感,严重病人生活质量和自理能力(Acta Diabetol,2016,53(6):879-889),甚至可导致死亡(Lancet 349,1050–1053(1997))。
多达70%的糖尿病患者在执行例行的体力工作时有困难,下肢移动性限制尤其明显。糖尿病是大多数老年综合症的一个重要的危险因素.虽然并存心血管疾病和肥胖也可能导致糖尿病患者的身体残疾。但有证据表明,老年糖尿病患者的运动减少部分是由糖尿病对骨骼肌的直接影响介导的(Diabetes Care,2010,33(5):1055-60)。研究表明,受损的肌肉功能可能导致年糖尿病患者的步态障碍和低步行速度(65岁及以上)。
目前在临床上也积极探索改善肌萎缩的方法,运动可改善肌萎缩的状态,增加肌肉质量和力量。但是运动对本身存在运动障碍的病人仍具有大局限性,因此急需可增加肌肉重量和力量的药物治疗方法来改善病人的生活质量和存活率。
丹参(Salvia miltiorrhiza Bge.)为唇形科鼠尾草属植物的干燥根。丹参是一重要的传统中药,传统医学认为丹参有祛瘀止痛、活血通经、清心除烦的功效。近来对丹参的作用研究主要集中在改善心、肝、肺、脑等脏器的缺血再灌注损伤;对肝细胞的损伤;肝纤维化、肝硬变、肝癌的作用;调节免疫应答;抗感染和抗肿瘤等方面。
丹酚酸A是中国医学科学院药物研究所黎莲娘教授首先从丹参中分离得到的一种水溶性有效成分。并首先确定其化学结构,系统化学命名为(2R)-3-(3,4-羟基苯基)-2-[(E)-3-[2-[(E)-2-(3,4-二羟基苯基)乙烯基]-3,4-二羟基苯基]丙-2-烯酰]氧丙酸。
现代药理学研究表明,丹参中丹酚酸类成分的抗心肌缺血缺氧的活性比丹参素和原儿茶醛更强,其中丹酚酸A是目前已知的最强的抗氧化化合物之一,并且有改善记忆,抑制血小板聚集,降低抗癌药阿霉素毒性,肝损伤、肝纤维化作用,防治动脉粥样硬化、保护心肌损伤作用、诱导细胞凋亡作用,抗肿瘤作用、改善记忆功能障碍、防治白内障、抑制血小板功能等作用,防治糖尿病并发症及治疗肺动脉高压方面。
本发明是采用提取丹参根茎的方法获得丹酚酸A,经过大量动物实验研究获得的新的发现。新的发明内容主要涉及制备药物和药物组合,为临床提供防治由于糖尿病及相关疾病、遗传、肌营养不良症及神经功能障碍导致的肌肉萎缩、肌病、肌肉骨骼并发症作为致病因素导致的肌肉病变的药物。目前有关丹酚酸A在肌肉萎缩及改善糖尿病及相关疾病、遗传、肌营养不良症及神经功能障碍导致的肌肉萎缩、肌病、肌肉骨骼并发症肌萎缩方面的直接或间接治疗作用尚没有报道。
发明内容
本发明要解决的技术问题是,提供一种丹酚酸A在制备预防、缓解和/或治疗包括糖尿病及相关疾病、遗传、肌营养不良症及神经功能障碍导致的肌肉萎缩、肌病、肌肉骨骼其并发症产品中的应用。
为解决本发明的技术问题,本发明提供如下技术方案:
本发明提供了如式(I)所示的丹酚酸A在制备预防、缓解和/或治疗肌肉萎缩、肌病及肌肉骨骼并发症产品中的应用,
其中,所述的肌病及肌肉骨骼并发症包括糖尿病及其相关疾病、遗传、肌营养不良症、神经功能障碍导致的肌病及肌肉骨骼并发症。所述的糖尿病包括1型及2型糖尿病。所述的糖尿病相关疾病选自糖尿病高血糖症、糖尿病血管病变、糖尿病肾病、糖尿病末梢循环功能障碍、糖尿病外周神经病变、糖尿病合并高脂血症。
采用雄性Kkay小鼠,建立糖尿病动物模型。检测丹酚酸A对动物血糖及体重的影响。采用动物抓力仪及悬挂实验,观察动物肌肉力量。测定动物不同部分肌肉的重量,及显微病理结构的变化,观察肌肉萎缩的治疗情况。判定丹酚酸A在制备预防、缓解和/或治疗包括糖尿病、遗传、肌营养不良症及神经功能障碍导致的肌肉萎缩、肌病、肌肉骨骼并发症及其并发症产品中的作用。
本发明的特点是丹酚酸A小量用药即可达到治疗及预防的效果。药物安全可靠。
本发明因此还涉及以本发明化合物丹酚酸A作为活性成份的药物组合物制备预防、缓解和/或治疗包括糖尿病及相关疾病、遗传、肌营养不良症及神经功能障碍导致的肌肉萎缩、肌病、肌肉骨骼其并发症产品中的应用。该药物组合物可根据本领域公知的方法制备。可通过将本发明化合物与一种或多种药学上可接受的固体或液体赋形剂和/或辅剂结合,制成适于人或动物使用的任何剂型。本发明化合物在其药物组合物中的含量通常为0.1‐95%(重量)。
本发明化合物药物组合物的给药剂量依照所要预防或治疗疾病的性质和严重程度,患者或动物的个体情况,给药途径和剂型等可以有大范围的变化。一般来讲,本发明化合物的每天的合适剂量范围为0.001‐150mg/Kg体重,优选为0.1‐100mg/Kg体重,更优选为1‐60mg/Kg体重,最优选为2‐30mg/Kg体重。上述剂量可以一个剂量单位或分成几个剂量单位给药,这取决于医生的临床经验以及包括运用其它治疗手段的给药方案。本发明的化合物或组合物可单独服用,或与其他治疗药物或对症药物合并使用。当本发明的化合物与其它治疗药物存在协同作用时,应根据实际情况调整它的剂量。
本发明化合物或含有它的药物组合物可以单位剂量形式给药,给药途径可为肠道或非肠道,如口服、静脉注射、肌肉注射、皮下注射、鼻腔、口腔粘膜、眼、肺和呼吸道、皮肤、阴道、直肠等。给药剂型可以是液体剂型、固体剂型或半固体剂型。液体剂型可以是溶液剂(包括真溶液和胶体溶液)、乳剂(包括o/w型、w/o型和复乳)、混悬剂、注射剂(包括水针剂、粉针剂和输液)、滴眼剂、滴鼻剂、洗剂和搽剂等;固体剂型可以是片剂(包括普通片、肠溶片、含片、分散片、咀嚼片、泡腾片、口腔崩解片)、胶囊剂(包括硬胶囊、软胶囊、肠溶胶囊)、颗粒剂、散剂、微丸、滴丸、栓剂、膜剂、贴片、气(粉)雾剂、喷雾剂等;半固体剂型可以是软膏剂、凝胶剂、糊剂等。本发明化合物可以制成普通制剂、也制成是缓释制剂、控释制剂、靶向制剂及各种微粒给药系统。
为了将本发明化合物制成片剂,可以广泛使用本领域公知的各种赋形剂,包括稀释剂、黏合剂、润湿剂、崩解剂、润滑剂、助流剂。稀释剂可以是淀粉、糊精、蔗糖、葡萄糖、乳糖、甘露醇、山梨醇、木糖醇、微晶纤维素、硫酸钙、磷酸氢钙、碳酸钙等;湿润剂可以是水、乙醇、异丙醇等;粘合剂可以是淀粉浆、糊精、糖浆、蜂蜜、葡萄糖溶液、微晶纤维素、阿拉伯胶浆、明胶浆、羧甲基纤维素钠、甲基纤维素、羟丙基甲基纤维素、乙基纤维素、丙烯酸树脂、卡波姆、聚乙烯吡咯烷酮、聚乙二醇等;崩解剂可以是干淀粉、微晶纤维素、低取代羟丙基纤维素、交联聚乙烯吡咯烷酮、交联羧甲基纤维素钠、羧甲基淀粉钠、碳酸氢钠与枸橼酸、聚氧乙烯山梨糖醇脂肪酸酯、十二烷基磺酸钠等;润滑剂和助流剂可以是滑石粉、二氧化硅、硬脂酸盐、酒石酸、液体石蜡、聚乙二醇等。还可以将片剂进一步制成包衣片,例如糖包衣片、薄膜包衣片、肠溶包衣片,或双层片和多层片。为了将给药单元制成胶囊剂,可以将有效成分本发明化合物与稀释剂、助流剂混合,将混合物直接置于硬胶囊或软胶囊中。也可将有效成分本发明化合物先与稀释剂、黏合剂、崩解剂制成颗粒或微丸,再置于硬胶囊或软胶囊中。用于制备本发明化合物片剂的各稀释剂、黏合剂、润湿剂、崩解剂、助流剂品种也可用于制备本发明化合物的胶囊剂。为将本发明化合物制成注射剂,可以用水、乙醇、异丙醇、丙二醇或它们的混合物作溶剂并加入适量本领域常用的增溶剂、助溶剂、pH调剂剂、渗透压调节剂。增溶剂或助溶剂可以是泊洛沙姆、卵磷脂、羟丙基‐β‐环糊精等;pH调剂剂可以是磷酸盐、醋酸盐、盐酸、氢氧化钠等;渗透压调节剂可以是氯化钠、甘露醇、葡萄糖、磷酸盐、醋酸盐等。如制备冻干粉针剂,还可加入甘露醇、葡萄糖等作为支撑剂。此外,如需要,也可以向药物制剂中添加着色剂、防腐剂、香料、矫味剂或其它添加剂。为达到用药目的,增强治疗效果,本发明的药物或药物组合物可用任何公知的给药方法给药。
有益技术效果
1.本发明的化合物可预防、缓解和/或治疗包括糖尿病及相关疾病、遗传、肌营养不良症及神经功能障碍导致的肌肉萎缩、肌病、肌肉骨骼其并发症。该用途是首次公开。拓宽该化合物的临床应用领域,尤其是该类疾病在临床尚没有明显有效的药物。该化合物为临床应用提供了药物选择。
2.目前在国际和国内,本发明的化合物在预防、缓解和/或治疗包括糖尿病及相关疾病、遗传、肌营养不良症及神经功能障碍导致的肌肉萎缩、肌病、肌肉骨骼其并发症产品中的应用为首次公开。未见相关论文及专利发表。
3.对于糖尿病及相关疾病、遗传、肌营养不良症及神经功能障碍导致的肌肉萎缩、肌病、肌肉骨骼其并发症的治疗和预防,除运动疗法外,国内外均未见明显有效的药物在临床应用。如在临床应用较为认可的利鲁唑片(Riluzole Tablets),没有证据表明利鲁唑对运动功能、肺功能、肌束震颤、肌力和运动症状具有治疗作用。仅在肌萎缩侧索硬化(ALS)中研究了利鲁唑的安全性和有效性(Miller RG,Cochrane Database Syst Rev.2012Mar 14;(3):CD001447)。并且在晚期ALS患者中利鲁唑未显示出疗效。因此临床非常需要安全有效的治疗药物。
4.本发明的化合物小量用药即可达到治疗及预防的效果。药物安全可靠。作为药物进行开发,具有明显的优益。
附图说明
图1.药物对动物进食进水量的影响。正常:正常对照组;糖尿病:糖尿病对照组;糖尿病+丹酚酸A:糖尿病造模给予丹酚酸A 0.3毫克/公斤;糖尿病+缬沙坦:糖尿病造模给予缬沙坦15毫克/公斤。本实验中,糖尿病动物进食及进水量均明显高于正常组。而给药后,对糖尿病动物的进食及进水的量均无明显影响。
图2.药物对动物体重的影响。正常:正常对照组;糖尿病:糖尿病对照组;糖尿病+丹酚酸A:糖尿病造模给予丹酚酸A 0.3毫克/公斤;糖尿病+缬沙坦:糖尿病造模给予缬沙坦15毫克/公斤。本实验中,糖尿病组动物的体重明显高于正常对照组,各给药组对糖尿病动物无明显影响。
图3.药物对动物空腹血糖的影响。正常:正常对照组;糖尿病:糖尿病对照组;糖尿病+丹酚酸A:糖尿病造模给予丹酚酸A 0.3毫克/公斤;糖尿病+缬沙坦:糖尿病造模给予缬沙坦15毫克/公斤。本实验中,糖尿病动物的血糖水平均明显高于正常对照组。给予丹酚酸A治疗后,在第6周后,动物的血糖水平有下降。对照药物缬沙坦也可见在给药6周以后出现下降。两种药物对血糖的降低作用相似。
图4.药物对动物空腹甘油三酯的影响。正常:正常对照组;糖尿病:糖尿病对照组;糖尿病+丹酚酸A:糖尿病造模给予丹酚酸A 0.3毫克/公斤;糖尿病+缬沙坦:糖尿病造模给予缬沙坦15毫克/公斤。本实验中,糖尿病组动物的甘油三酯水平均明显高于正常对照组。而各给药组甘油三酯水平在整个实验周期内未见下降。
图5.药物对动物肌肉力量的影响。正常:正常对照组;糖尿病:糖尿病对照组;糖尿病+丹酚酸A:糖尿病造模给予丹酚酸A 0.3毫克/公斤;糖尿病+缬沙坦:糖尿病造模给予缬沙坦15毫克/公斤。与正常对照动物相比,糖尿病动物的抓力均明显下降。丹酚酸A给药组对前肢抓力的增强具有显著作用。对后肢、及铁丝悬挂能力的作用虽没有统计学差异,但均存在改善的趋势。*,P<0.05;**,P<0.01与模型组相比。
图6.药物对动物骨骼肌重量的影响。正常:正常对照组;糖尿病:糖尿病对照组;糖尿病+丹酚酸A:糖尿病造模给予丹酚酸A 0.3毫克/公斤;糖尿病+缬沙坦:糖尿病造模给予缬沙坦15毫克/公斤。与正常相比,糖尿病动物腓肠肌(gastrocnemius),比目鱼肌(Soleus),胫骨前肌(Tibialis anterior)均重量明显下降。丹酚酸A给药组与糖尿病组相比,腓肠肌重量明显增加,具有统计学差异。其他比目鱼肌和胫骨前肌也存在重量增加的趋势。*,P<0.05;**,P<0.01与模型组相比。
图7.药物对动物趾长伸肌肌肉纤维束面积的影响。正常:正常对照组;糖尿病:糖尿病对照组;糖尿病+丹酚酸A:糖尿病造模给予丹酚酸A 0.3毫克/公斤;糖尿病+缬沙坦:糖尿病造模给予缬沙坦15毫克/公斤。与正常组相比,糖尿病组骨骼肌的肌纤维束的截面积减少。丹酚酸A给药组肌肉细胞形态饱满,横截面积减少可见改善。*,P<0.05与模型组相比。
具体实施方式
下面结合本发明进一步说明丹酚酸A在制备预防、缓解和/或治疗包括糖尿病及相关疾病、遗传、肌营养不良症及神经功能障碍导致的肌肉萎缩、肌病、肌肉骨骼并发症导致的肌肉萎缩、肌病、肌肉骨骼并发症及其并发症产品中的药理作用与用途。下述实施例更详细地举例说明本发明,并不是对本发明的任何限制。
实施例1:糖尿病小鼠模型的建立及给药情况
实验原理
KKay小鼠是一种轻度肥胖型2型糖尿病模型,后与C57BL/6J小鼠杂交,并进行近亲繁殖。近交系KK小鼠是典型的多基因糖尿病动物模型,表现为典型的2型糖尿病特征,晚期可出现糖尿病性并发症。
实验方法
雄性KKay小鼠,体重17-20g,高糖高脂饲料喂养,不限食水。同龄的C57BL/6J小鼠作为正常对照组,体重17-20g,全营养饲料喂食,不限食水。罗氏血糖仪测定禁食血糖值,尾尖取血测随机血糖≥11.1mmol/L)作为模型组。
将雄性60只KKay小鼠血糖≥11.1mmol/L随机分为3组,模型组,缬沙坦15mg/kg对照组。丹酚酸A 0.3mg/kg。分组后,每日一次灌胃给药。正常对照组给予同体积生理盐水。每次给药前蒸馏水新鲜配制。丹酚酸A(中国医学科学院药物研究所筛选中心制备)缬沙坦(诺华制药)连续给药2个月。每周测血糖、体重。记录动物死亡情况。末次给药后,动物过夜不禁食禁水。次日晨测定体重,随机血糖。水合氯醛麻醉后,腹腔静脉取血,测定血清标志物。取脏器,测定脏器指数。
实验结果
Kkay小鼠经高糖高脂喂养2个月后,肌肉出现无力,抓力下降。分离肌肉组织,快、慢肌肉的绝对重量及与体重相比的相对重量均有下降。HE染色进行组织观察,发现糖尿病小鼠的骨骼肌结构不清晰,肌纤维束的面积减少。
实施例2:丹酚酸A对糖尿病小鼠血糖/血脂/进食量/进水量/体重等一般情况影响
动物的进食进水量
实验方法:动物模型见实施例1。动物食水摄入量是反应动物能量代谢的重要指标,可评价动物摄取及利用热量的情况。动物进食进水量。给药第8周天记录小鼠24h进食量和饮水量,以动物初始食水量与24h后剩余食水量之差为24h进食饮水量。加料前准确称量饲料,24小时后观察,称量剩余饲料量。每次加料以满足动物食量,并稍有剩余。
实验结果:本实验中,糖尿病动物进食及进水量均明显高于正常组。而给药后,对糖尿病动物的进食及进水的量均无明显影响。结果见图1。
动物体重
实验方法:动物模型见实施例1。体重是反应动物能量利用平衡情况,生长情况的重要指标。本实验中每天观察并记录动物的活动状态、毛发等一般情况,每周一次监测动物体重。
实验结果:本实验中,糖尿病组动物的体重明显高于正常对照组,各给药组对糖尿病动物无明显影响。结果见图2
动物血糖水平
实验方法:动物模型见实施例1。禁食血糖每周测定一次,以禁食4h所测血糖值为空腹血糖。测定当天早7:00禁食,9:00给药,11:00检测。取第二滴血,罗氏血糖仪检测。给药及采血时各组交叉循环进行以减少组间差异。
实验结果:本实验中,糖尿病动物的血糖水平均明显高于正常对照组。给予丹酚酸A治疗后,在第6周后,动物的血糖水平有下降。对照药物缬沙坦也可见在给药6周以后出现下降。两种药物对血糖的降低作用相似。结果见图3。
动物血脂水平
实验方法:动物模型见实施例1。实验结束时动物称重,摘眼球取血,肝素抗凝,4℃,5000r离心15min,取上清。全自动生化分析仪检测甘油三酯(triglyceride,TG)水平。
实验结果:本实验中,糖尿病组动物的甘油三酯水平均明显高于正常对照组。而各给药组甘油三酯水平在整个实验周期内未见下降。结果见图4。
实施例3:丹酚酸A对糖尿病导致的骨骼肌收缩能力的影响
实验原理
对动物骨骼肌收缩能力进行测试是为了评价各种因素对动物肢体力量的影响程度,同时也可对动物的衰老、神经损伤、骨骼损伤、肌肉损伤测定。该测定方法操作简单,使用方便,指标明确,特异性强,能测到动物真实而客观的抓力。
实验方法
动物抓力:测定动物肢体抓力情况。采用抓力仪,测定前、后肢抓力水平。动物的肌肉力量测定用抓力测定仪,具体操作参照厂家说明(Beijing zhishuduobao biologicaltechnology,China)。简述如下,抓住鼠尾,让动物前肢,或后肢抓住金属杆,然后水平向后拉。在抓取的瞬间被施加到金属杆上的力被记录为峰值张力。在同一实验中连续重复5次,所有试验的平均值作为动物的握力。
动物铁丝悬挂能力:采用铁丝悬挂实验,观察动物的悬挂时间及与体重的关系。铁丝悬挂实验测定动物的耐力和协调能力。采用直径3毫米铁丝,悬挂在高度0.5米的高度。将动物悬挂在铁丝的中心,只用前肢悬挂。记录动物从铁丝上跌落下来的时间。连续记录3次,计算平均值。如果动物自愿跳落,则不计算当次的值(文献:Roberts MN,2017)。
实验结果
与正常对照动物相比,糖尿病动物的抓力均明显下降。丹酚酸A给药组对前肢抓力的增强具有显著作用。对后肢、及铁丝悬挂能力的作用虽没有统计学差异,但均存在改善的趋势。结果见图5。
实施例4:丹酚酸A对糖尿病导致的骨骼肌重量的影响
实验方法
动物模型见实施例1。测定腓肠肌,比目鱼肌,胫骨前肌的绝对重量及重量指数。动物处死后,取不同部分的脏器。预冷的生理盐水冲洗干净,定性滤纸吸干残余水分后,记录脏器重量。取小腿部位的肌肉,精确分离肌肉,称重。
实验结果
与正常相比,糖尿病动物腓肠肌(gastrocnemius),比目鱼肌(Soleus),胫骨前肌(Tibialisanterior)重量均明显下降。丹酚酸A给药组与糖尿病组相比,腓肠肌重量明显增加,具有统计学差异。其他比目鱼肌和胫骨前肌也存在重量增加的趋势。结果见图6。
实施例5:丹酚酸A对糖尿病导致的骨骼肌显微结构的影响
实验方法
动物模型见实施例1。取新鲜骨骼肌,以10%中性福尔马林固定,石蜡包埋切片,进行HE染色,显微镜下(Olympus BX51)观察并随机选取5个视野采集图像,用Image-ProPlus6.0图像分析软件分别对骨骼肌肌细胞,肌纤维束进行观察及测量分析。病理组织学观察丹酚酸A对肌纤维形态影响。
实验结果
与正常组相比,糖尿病组骨骼肌的肌纤维束的截面积减少。丹酚酸A给药组肌肉细胞形态饱满,横截面积减少可见改善。结果见图7。
Claims (7)
2.根据权利要求1所述的应用,其特征在于,所述的糖尿病包括1型及2型糖尿病。
4.根据权利要求3所述的应用,其特征在于,所述的药物组合物除含有丹酚酸A作为药物活性成分外,还含有其他活性成分。
5.根据权利要求3所述的应用,其特征在于,所述的药物组合物的剂型选自:溶液、混悬液、乳剂、丸剂、胶囊、粉末、持续释放制剂及微粒体给药系统的形式。
6.根据权利要求3所述的应用,其特征在于,药用赋形剂选自:淀粉、糊精、多甲基纤维素钠、硬脂酸镁、滑石粉。
7.根据权利要求1-3任一项所述的应用,其特征在于,所述丹酚酸A的每日用药剂量在0.01~1000mg/kg体重范围内。
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