CN112704690B - 鹅掌楸或其提取物在制备降低血清尿酸水平、防治尿酸性肾病的药物中的用途 - Google Patents
鹅掌楸或其提取物在制备降低血清尿酸水平、防治尿酸性肾病的药物中的用途 Download PDFInfo
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Abstract
本发明涉及鹅掌楸或其提取物在制备降低血清尿酸水平、防治尿酸性肾病的药物中的用途,属于医药领域。本发明一方面提供了鹅掌楸或其提取物在制备降低血尿酸水平的药物中的用途。另一方面,本发明还提供了鹅掌楸或其提取物在制备治疗和/或预防尿酸性肾病的药物中的用途。动物实验证实,鹅掌楸能够明显降低血清尿酸水平,同时改善高尿酸血症小鼠肾小管扩张、肾小球硬化以及肾脏间质纤维化的程度。进一步的研究表明,鹅掌楸通过促进肾脏尿酸排泄发挥降低血清尿酸水平的作用。本发明的应用能够为临床治疗高尿酸血症及其导致的高尿酸肾病提供新的用药选择。
Description
技术领域
本发明涉及鹅掌楸或其提取物在制备降低血清尿酸水平、防治尿酸性肾病的药物中的用途,属于医药领域。
背景技术
高尿酸血症指正常嘌呤饮食情况下,非同日两次测定空腹血清尿酸水平男性≥416μmol/L(7mg/dl),女性≥357μmol/L(6mg/dl)。近年来,国内外众多研究证实高尿酸血症与痛风、心血管疾病、代谢综合征、高血压及肾脏疾病的发生发展密切相关。高尿酸血症是慢性肾脏病(Chronic Kidney Disease,CKD)患病率增高的重要原因,并且是CKD进展的独立风险因素。研究表明,降低血尿酸水平可以延缓肾脏疾病进展。治疗高尿酸肾病重在预防、纠正高尿酸血症,降低血尿酸水平,防止尿酸盐沉积在肾脏。
鹅掌楸(Liriodendron chinense(Hemsl.)Sarg.),又名马褂木,木兰科鹅掌楸属植物。据文献记载,鹅掌楸树皮具有祛风除湿、止咳、治疗风湿关节痛等作用。但其是否具有降低血清尿酸水平,改善尿酸性肾脏病的作用目前尚无报道。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此,本发明的目的在于提供鹅掌楸或其提取物在制备降低血尿酸水平的药物中的用途。本发明的另一目的在于提供鹅掌楸或其提取物在制备治疗和/或预防尿酸性肾病的药物中的用途。
本发明提供了鹅掌楸Liriodendron chinense(Hemsl.)Sarg.或其提取物在制备降低血清尿酸水平的药物中的用途。
本发明提供了鹅掌楸Liriodendron chinense(Hemsl.)Sarg.或其提取物在制备治疗和/或预防尿酸性肾病的药物中的用途。
进一步地,所述的用途满足以下至少一项:
所述的药物降低血清肌酐、血清尿酸、血清尿素氮、尿微量白蛋白中至少一种的水平;
所述的药物改善肾小管扩张和/或肾小球硬化;
所述的药物改善肾脏纤维化;
所述的药物降低肾脏中胶原纤维1、纤维连接蛋白、α-平滑肌肌动蛋白至少一种的表达量。
进一步地,所述的药物促进肾脏尿酸排泄。
进一步地,所述的药物是以鹅掌楸或其提取物为活性成分,加入药学上可接受的辅料或者辅助性成分制备而成的制剂。
进一步地,所述的制剂为口服制剂或注射制剂。
进一步地,鹅掌楸的入药部位为根、树皮、枝、叶中至少一种。
进一步地,所述的提取物为醇和/或水提取物。
优选地,所述的醇为C1~C6脂肪醇。
进一步优选地,所述的醇为乙醇。
进一步地,所述提取物的制备方法包括如下步骤:取鹅掌楸,加入乙醇水溶液进行提取,浓缩提取液,即得。
进一步地,所述的提取满足以下至少一项:
加入75%v/v乙醇水溶液进行提取;
料液比为500:5,g/L;
于加热煮沸的条件下提取3小时。
本发明提供了鹅掌楸或其提取物在制备降低血清尿酸水平、防治尿酸性肾病的药物中的用途。动物实验证实,鹅掌楸能够明显降低血清尿酸水平,同时改善高尿酸血症小鼠肾小管扩张、肾小球硬化以及肾脏间质纤维化的程度。进一步的研究表明,鹅掌楸通过促进肾脏尿酸排泄发挥降低血清尿酸水平的作用。本发明的应用能够为临床治疗高尿酸血症及其导致的高尿酸肾病提供新的用药选择。
附图说明
图1为试验例1中小鼠血清肌酐、血清尿酸、血清尿素氮、尿微量白蛋白检测结果图;
图2为试验例1中小鼠肾脏组织PAS染色图;
图3为试验例2中小鼠肾脏MASSON染色及α-平滑肌肌动蛋白免疫组化染色图;
图4为试验例2中小鼠肾脏胶原纤维1、纤维连接蛋白、α-平滑肌肌动蛋白表达量检测结果图;
图5为试验例3中小鼠24小时尿尿酸排泄量检测结果图。
具体实施方式
下面将结合实施例对本发明的方案进行解释。本领域技术人员将会理解,下面的实施例仅用于说明本发明,而不应视为限定本发明的范围。实施例中未注明具体技术或条件的,按照本领域内的文献所描述的技术或条件或者按照产品说明书进行。所用试剂或仪器未注明生产厂商者,均为可以通过市购获得的常规产品。
鹅掌楸提取物的制备:取鹅掌楸(包含树皮枝叶部分)500g于5L的75%v/v乙醇水溶液中,加热煮沸3小时后,过滤,蒸干溶剂,获得棕色固体提取物。
实验方法:雄性C57BL/6小鼠随机分为正常组、模型组、阳性对照组(别嘌醇10mg/kg/d)、鹅掌楸提取物低剂量治疗组(250mg/kg/d)及鹅掌楸提取物高剂量治疗组(500mg/kg/d),每组6只。采用腺嘌呤(160mg/kg/d)加氧嗪酸钾(2400mg/kg/d)灌胃各模型组和治疗组的小鼠造模,正常组则灌胃等体积双蒸水,连续造模3周。造模同时,利用鹅掌楸提取物和别嘌醇灌胃各治疗组,正常组和模型组灌胃等体积双蒸水,连续治疗3周。第21天用代谢笼收集小鼠24小时尿液后处死小鼠。
实施例1鹅掌楸降低血清尿酸及防治尿酸性肾病的作用
小鼠血液样本在室温3000r/min离心15min后取血清测定生化指标;小鼠尿液标本在室温800g/min离心10min后取上层尿液测定尿微量白蛋白水平。其中,血肌酐和血BUN采用全自动生化仪(TC6010L,江西特康科技有限责任公司)检测;血尿酸和尿微量白蛋白采用全自动生化仪(BS-240,深圳迈瑞生物医疗电子股份有限公司)检测。实验结果见图1。对小鼠肾脏组织进行PAS染色,结果见图2。
从图1可以看出,鹅掌楸能够明显降低血清尿酸水平,改善肾脏功能(降低血清肌酐、血清尿素氮BUN及尿微量白蛋白水平)。且鹅掌楸高剂量治疗组对血清肌酐、血清尿素氮BUN及尿微量白蛋白的改善作用明显优于低剂量治疗组(与正常组比**P<0.01、****P<0.0001;与模型组比§P<0.05、§§P<0.01、§§§P<0.001、§§§§P<0.0001)。
从图2可以看出,鹅掌楸治疗后,高尿酸血症小鼠肾脏肾小管扩张、肾小球硬化得到了明显的改善。
实施例2鹅掌楸对慢性尿酸性肾脏纤维化的改善作用
采用MASSON染色评估肾脏胶原纤维表达情况,同时进行肾脏α-SMA(α-平滑肌肌动蛋白)免疫组化染色。实验结果见图3。肾脏Westernblot结果见图4。
从图3可以看出,鹅掌楸治疗后,高尿酸血症小鼠的肾脏间质纤维化程度得到了明显改善。α-SMA免疫组化染色表明,鹅掌楸能有效抑制间质α-SMA表达。
从图4可以看出,高尿血症小鼠肾脏胶原纤维1、纤维连接蛋白、α-平滑肌肌动蛋白表达明显升高,鹅掌楸治疗后,能够显著降低它们在肾脏中的表达。
实施例3鹅掌楸通过促进肾脏尿酸排泄降低血尿酸水平
实验第21天时,用代谢笼收集小鼠24小时尿液并记录尿液体积。小鼠尿液标本在室温800g/min离心10min后取上层尿液采用全自动生化仪(BS-240,深圳迈瑞生物医疗电子股份有限公司)测定尿尿酸水平,24小时尿尿酸排泄量=24小时尿液体积×24小时尿尿酸浓度。实验结果见图5。
从图5中可以看出,模型组小鼠24小时尿尿酸排泄量明显下降(与正常组比P<0.0001);鹅掌楸治疗后,尿尿酸排泄量显著增高,且高剂量(与模型组比P<0.0001)优于低剂量组(与模型组比P<0.01)。
以上结果表明,鹅掌楸通过促进肾脏尿酸排泄降低血清尿酸水平。
Claims (11)
1.鹅掌楸Liriodendron chinense (Hemsl.) Sarg.提取物在制备治疗和/或预防高尿酸血症的药物中的用途;所述的提取物由鹅掌楸加入75%v/v乙醇水溶液进行提取。
2.鹅掌楸Liriodendron chinense (Hemsl.) Sarg.提取物在制备治疗和/或预防尿酸性肾病的药物中的用途;所述的提取物由鹅掌楸加入75%v/v乙醇水溶液进行提取。
3.如权利要求2所述的用途,其特征是:所述的药物降低血清肌酐、血清尿酸、血清尿素氮、尿微量白蛋白中至少一种的水平。
4.如权利要求2所述的用途,其特征是:所述的药物改善肾小管扩张和/或肾小球硬化。
5.如权利要求2所述的用途,其特征是:所述的药物改善肾脏纤维化。
6.如权利要求5所述的用途,其特征是:所述的药物降低肾脏中胶原纤维1、纤维连接蛋白、α-平滑肌肌动蛋白至少一种的表达量。
7.如权利要求1所述的用途,其特征是:所述的药物促进肾脏尿酸排泄。
8.如权利要求1~7任意一项所述的用途,其特征是:所述的药物是以鹅掌楸提取物为活性成分,加入药学上可接受的辅料制备而成的制剂。
9.如权利要求8所述的用途,其特征是:所述的制剂为口服制剂。
10.如权利要求1~7任意一项所述的用途,其特征是:鹅掌楸的入药部位为根、树皮、枝、叶中至少一种。
11.如权利要求1或2所述的用途,其特征是:所述的提取满足以下至少一项:
料液比为500:5,g/L;
于加热煮沸的条件下提取3小时。
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CN201911017671.8A CN112704690B (zh) | 2019-10-24 | 2019-10-24 | 鹅掌楸或其提取物在制备降低血清尿酸水平、防治尿酸性肾病的药物中的用途 |
JP2022520953A JP7391202B2 (ja) | 2019-10-24 | 2020-10-23 | 血清尿酸値の低下、尿酸性腎症の予防・治療のための薬物の製造におけるシナユリノキ又はその抽出物の使用 |
EP20878445.4A EP4023238A4 (en) | 2019-10-24 | 2020-10-23 | USE OF LIRIODENDRON CHINENSE (HEMSL.) SARG OR ITS EXTRACT IN THE MANUFACTURE OF A MEDICATION FOR REDUCING SERUM LEVELS OF URIC ACID AND FOR PREVENTING AND TREATMENT OF URIC ACID ENPHROPATHY |
US17/767,492 US20240316137A1 (en) | 2019-10-24 | 2020-10-23 | Use of Liriodendron Chinense (Hemsl.) Sarg. or Extract thereof in the Preparation of Medicament for Reducing Serum Uric Acid Level and Preventing and Treating Uric Acid Nephropathy |
PCT/CN2020/123257 WO2021078252A1 (zh) | 2019-10-24 | 2020-10-23 | 鹅掌楸或其提取物在制备降低血清尿酸水平、防治尿酸性肾病的药物中的用途 |
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