CN110621327A - 含有阳春砂提取物的预防及治疗改善脂肪肝的组成物 - Google Patents
含有阳春砂提取物的预防及治疗改善脂肪肝的组成物 Download PDFInfo
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- CN110621327A CN110621327A CN201880026613.9A CN201880026613A CN110621327A CN 110621327 A CN110621327 A CN 110621327A CN 201880026613 A CN201880026613 A CN 201880026613A CN 110621327 A CN110621327 A CN 110621327A
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- amomum villosum
- fatty liver
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- A—HUMAN NECESSITIES
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Abstract
本发明涉及含有有效成分阳春砂提取物的预防及治疗改善脂肪肝的组成物。本发明涉及预防及治疗改善脂肪肝的组成物,其特征为用水提取所述阳春砂提取物,以老鼠经口给药基准含100~500mg/kg所述阳春砂提取物。本发明提供含有有效成分阳春砂提取物的预防及治疗改善脂肪肝的组成物,阳春砂提取物对脂肪肝生成的抑制效能及其机制具有在生物体外和生物体内抑制TG、抑制内质网应激相关基因的表达、抑制脂肪合成相关基因表达的效能。
Description
技术领域
本发明涉及含有有效成分阳春砂提取物的预防及治疗改善脂肪肝的组成物。
本发明提供一种含有有效成分阳春砂提取物的预防及治疗改善脂肪肝的组成物,其特征是用水提取所述阳春砂提取物,阳春砂提取物对脂肪肝生成的抑制效能及其机制具有在生物体外和生物体内抑制肝内TG、抑制ER压力相关遗传基因表达、抑制脂肪合成相关遗传基因表达的效能。
背景技术
一般健康的肝脏的脂肪比率为5%,蓄积比这个比率多的脂肪的肝称为脂肪肝。最近随着营养状态变好、成人病增加,脂肪肝患者增加。脂肪肝是一种由于脂肪的过度摄取导致肝内脂肪蓄积、合成及无法进行正常的脂肪代谢而发病的疾病。
脂肪肝可以分为由过量饮酒引起的酒精性脂肪肝和由肥胖、糖尿病、高血脂症、药物引起的非酒精性脂肪肝。酒精性脂肪肝是因为过量摄入酒精时在肝内促进脂肪合成且无法进行正常的能量代谢而发生。
即,脂肪肝的主要原因为饮酒和肥胖,有时与血液中脂肪类的浓度高的高血脂症或糖尿病等疾病相伴出现,肾上腺皮质激素类药(类固醇类激素类药)或女性激素类药等药剂也可能成为原因。
脂肪肝大部分没有症状,外观上看起来健康,可能感到疲劳感和全身倦怠感、或者右上腹部的不舒服或轻微的疼痛。因此,与明显表现发病的情况相比,大部分通过血液检查进行肝功能检查或超声波检查中出现诊断出异常的情况多。
这种脂肪肝的治疗方法根据酒精、非酒精脂肪肝而不同。
由于酒精性脂肪肝是过量饮酒导致发病,因此,作为酒精性脂肪肝的治疗方法,首先通过生活习惯改善,从戒酒开始,掌握健康状态,持续进行管理。其次,除了戒或减少酒的方法以外,作为治疗剂使用抗氧化剂(维生素E、维生素B、C)。使用肝细胞保护剂即熊脱氧胆酸(urosodeoxycholic acid,UDCA)或水飞蓟素(silymarin)等护肝。
非酒精性脂肪肝的治疗方法,有改善生活习惯、手术治疗、药物疗法等。
脂肪肝患者的70~80%为肥胖,其余相当数的患者为超重。因此,减少体重来提高胰岛素敏感性,进而使脂肪肝好转,最近有只要减重大约5%左右,就改善胰岛素抵抗,肝功能数值好转的报告。因此,生活习惯的改善比什么都重要。
其次,过去不太使用肥胖手术疗法,但最近随着高度肥胖患者增加,在高度肥胖(体脂量指数>40Kg/m2)、或体脂量指数为35Kg/m2以上且伴随糖尿或高血压等危险因子的情况下,推荐手术疗法。手术包括:1)诱导早期饱腹感,减少食物摄入的手术(gastricbanding);(2)将小肠迂回诱导吸收不良的手术(jejunoileal bypass);3)为得到上述两种全部效果的手术(Roux-en-Y gastric bypass,bilopancreatic diversion)。
最后,药物疗法使用糖尿病治疗剂及胰导素抵抗改善药物,抗氧化剂及肝细胞保护剂、高血脂症治疗药物。使用糖尿病治疗剂及胰导素抵抗改善药物,增加葡萄糖受体,促进肌肉中糖的吸收,促进脂肪细胞的分化,减少肝内脂肪沉积,对脂肪肝及脂肪肝炎的治疗有效果。另外,为了减少脂肪肝疾病的发生机制之一的氧化应激,正在研究抗氧化剂使用,有报道称通过使用高血脂症治疗剂对相关脂肪肝有效能。
但是,实际情况是脂肪肝药物学治疗中有效的药物几乎不存在,推荐运动和饮食疗法。另外,使用上述药物时,反而有关于乳酸症、对肌肉的线粒体损伤、炎症、纤维化等多种副作用的报告。相对来说,脂肪肝在初期是可以通过饮食调节恢复的轻疾,但是持续长时间时,肝受损伤,肝有可能无法恢复,是可怕的疾病。因此,这种脂肪肝的药剂选择,应考虑短期及长期服用时均没有副作用。
鉴于上述情况,本申请人利用阳春砂(Amomum villosum Loureiro)提取物提出本发明,其没有副作用,长期服用也没有毒性,对预防、治疗改善脂肪肝有效果。
砂仁指生姜科(Zingiberaceae)所属的绿壳砂(Amomum villosum Loureirovar.xanthioides T.L.Wu et Senjen)或阳春砂(Amomum villosum Loureiro)的成熟的果实或种子的块,本发明中使用阳春砂的果实作为材料。
阳春砂主要产于中国福建、广东、广西、云南,绿壳砂主要产于柬埔寨、印度、老挝、缅甸、泰国、越南等中南半岛区域和中国的广西、云南的部分地区。(摘自中国植物志(Floraof China,v24:347-356.2000))。由于产地不同,古代将绿壳砂别称为“缩砂仁”。
另外,目前的情况是中国认证为正品但在韩国视为假货的海南砂(Amomumlongiligulare T.L.Wu)的果实也大量流通。但是,申等(SHEN Li WANG Yang JIANG Ku etal.Comparison of HPLC Fingerprints of Amomum villosum Lour.,Amomurn villosumLour.var.xanthioides T.L.Wu et Senjen and Amomum longiligulare T.L.Wu.中国药学杂志.2016:51(12);1039-1043.)经RP-HPLC研究结果,表示3种砂仁在成分上显示高的类似度,但是海南砂和阳春砂的化学成分类似,相反绿壳砂与前两种有明显的差异,需要对其进行详细的药理和临床效能的比较。
脂肪肝被认为是肥胖、糖尿病等代谢疾病的前一阶段或征兆,脂肪肝的发生可用二次打击模型(two-hit working model)说明。肝的脂肪层相当于第一次打击,所述第一次打击产生的炎症、饱和脂肪酸等肝损伤导致的第二次打击使肝变成脆弱的状态。最近的研究中,利用诸如GRP78、CHOP、XBP-1的内质网应激标记物(ER stress marker)证明了内质网应激在这样的过程中为二次打击的主要原因,因此为了防止脂肪肝的恶化,研究减少内质网应激的方法变得重要。
对此,本研究为了证明阳春砂提取物的预防及改善脂肪肝的效能,利用由脂肪肝的化学性诱导因子——衣霉素(tunicamycin)引起内质网应激(Endoplasmic reticulum(ER)stress)的HepG2细胞和C57BL/6老鼠模型,在生物体外和生物体内,证明了阳春砂提取物的效能,从而完成了本发明。
另外,根据现有文献,大韩民国注册专利公报第10-1431610号记载有作为有效成分包含乌梅及紫草提取物的用于预防或治疗肥胖、异常血脂症、脂肪肝或糖尿的药剂学组成物,大韩民国注册专利公报第10-1206543号记载有含栗壳提取物的组成物对预防或治疗脂肪肝有效果。
但是,上述现有技术文献使用不同于阳春砂的其它天然物揭示效能,在这一点上区别于本发明。
发明内容
技术课题
本发明的技术课题是提供一种含有有效成分阳春砂提取物的用于预防及治疗改善脂肪肝的组成物。
本发明的技术课题是提供一种含有有效成分阳春砂提取物的预防及治疗改善脂肪肝的组成物,关于阳春砂提取物对基于内质网应激的脂肪肝生成的抑制效能及其机制,通过在生物体外和生物体内给药作为内质网应激诱导剂的衣霉素,确认了抑制内质网应激相关GRP78、CHOP基因表达、抑制脂肪合成相关SREBP-1的表达的脂肪肝预防效能。
课题解决方案
本发明提供一种含有有效成分阳春砂提取物的用于预防及治疗改善脂肪肝的组成物,从而解决技术课题。
本发明的用于预防及治疗改善脂肪肝的组成物,所述阳春砂提取物以老鼠经口给药基准含100~500mg/kg,从而解决技术课题。
本发明的用于预防及治疗改善脂肪肝的组成物,所述阳春砂提取物是用水提取的,从而解决技术课题。
本发明的用于预防及治疗改善脂肪肝的组成物,其特征在于,所述阳春砂提取物在HepG2细胞和老鼠中抑制基于衣霉素的脂肪生成,在老鼠中抑制内质网应激相关基因GRP78、CHOP的蛋白质及mRNA表达,抑制脂肪肝合成相关基因乙酰辅酶A羧化酶ACC(acetylCoA carboxylase)、脂肪酸合成酶FAS(fatty acid synthase)、固醇调节元件结合蛋白SREBP(sterol regulatory element binding protein)-1的蛋白质及mRNA表达,从而解决技术课题。
本发明的用于预防及治疗改善脂肪肝的组成物,所述阳春砂提取物对由内质网应激引起的脂肪肝的生成有抑制效果。
本发明的用于预防及改善改善脂肪肝及肝疾病的保健功能食品组成物,作为有效成分含有阳春砂提取物,从而解决技术课题。
发明效果
根据本发明的实验例,为了确认阳春砂提取物的预防及治疗改善脂肪肝的效能,在生物体外和生物体内确认了肝内脂肪蓄积抑制效能。
根据本发明的实验例,进行阳春砂提取物处理之后进行内质网应激诱导剂——衣霉素处理来确认的结果,在HepG2细胞及C57BL/6老鼠中有意义地抑制了基于衣霉素的TG含量的增加。另外,抑制内质网应激相关GRP78、CHOP基因表达,抑制脂肪合成相关SREBP-1的表达。
由此,证明了阳春砂提取物对由衣霉素诱导内质网应激及脂肪合成引起的脂肪肝生成的效能。据此,本发明人开发出基于阳春砂提取物的预防及治疗改善脂肪肝的效能组成物,完成了本发明。
附图说明
图1是通过本发明的实验例表示随浓度的阳春砂提取物细胞内毒性的图表。
图2是通过本发明的实验例表示随浓度的阳春砂提取物细胞内抑制TG生成的图表。
图3是通过本发明的实验例表示随浓度的阳春砂提取物对动物抑制TG生成的图表。
图4是通过本发明的实验例表示阳春砂提取物对由衣霉素引起的内质网应激相关基因表达的影响的图表。
图5是通过本发明的实验例表示阳春砂提取物对由衣霉素引起的脂肪合成相关基因表达的影响的图表。
具体实施方式
本说明书及权利要求书中使用的用语或词语不应限定解释为通常或词典上的意义,根据发明人为了用最优选的方法说明自己的发明可以适当定义用语的概念的原则,应解释为符合本发明的技术思想的意义和概念。
因此,本说明书中记载的实施例、参照例及附图中所述的事项不过是本发明的最优选的一例,不代表本发明的全部技术思想,因此应当理解在本申请提出的时刻,可能存在代替它们的多样的等同物和变形例。
实验例1.阳春砂提取物的脂肪肝生成抑制效能评价
1)试剂
药草阳春砂购于CoreSciences公司(首尔,韩国)。衣霉素购于Sigma-Aldrich(St.Louis,MO,美国),抗葡萄糖调节蛋白(anti-glucose regulated protein 78)GRP78、同源蛋白(homolog protein)CHOP、抗x盒结合蛋白-1(anti-X-box-biding protein-1)XBP-1购于圣克鲁兹生物技术(Santa Cruz Biotechnology)(Santa Cruz,CA,美国)。细胞活力测定试剂(cell viability assay reagent)即EZ-cytoxy购于西格玛奥德里奇公司(Sigma-Aldrich)。
2)提取阳春砂的步骤
用水提取阳春砂得到提取物的步骤。根据设计条件,可以使用其它溶媒,根据提取溶媒的种类,可以不同地设计提取温度、提取时间、溶媒的量及残留成分处理方式等。提取溶媒也可以使用多样的溶媒,可提取的溶媒有水、乙醇、甲醇、脂油、甘油、马油、乙酸乙酯、丙酮、丁醇及异丙醇等。本发明中优选用水提取阳春砂。
3)细胞活力实验
为了评价肝疾病效能,人肝癌细胞株HepG2(Human hepatocellular carcinomacell line)购自美国菌种保藏中心ATCC(American Type Culture Collection)。(Manassas,VA,美国)。HepG2细胞在10%热灭活胎牛血清FBS(heat-inactivated fetalbovine serum)、用1%抗菌素(antibiotics)加强的杜尔贝科氏最低必需伊格尔氏培养基DMEM(Dulbecco's minimum Eagle's essential medium)中培养。
作为细胞活力测定试剂(Cell viability assay reagent)使用EZ-cytoxy。通过吸光度测量由四氮唑盐(Tetrazolium salt)生成的甲瓒(formazan)。为了解阳春砂提取物的细胞毒性,在HepG2细胞中利用作为细胞活力分析试剂的EZ-cytoxy确认了各浓度100、200、500、1000μg/ml的阳春砂提取物对细胞的毒性。
图1是通过本发明的实验例表示随浓度的阳春砂提取物的细胞内毒性的图表。
其结果,在1000μg/ml浓度下确认了50~60%的细胞生存率,在100~500μg/ml的浓度下未显出有意义的细胞毒性。由此确认了高浓度阳春砂提取物有毒性,据此,本发明中使用了100~500μg/ml的浓度。在本发明中,1000μg/ml以上浓度由于细胞毒性高而从实验中排除,实验组分为分别给药阳春砂提取物100、200、500μg/ml的3组。
4)阳春砂提取物的细胞内TG抑制效能评价
人体肝癌细胞株HepG2为肝细胞,为评价细胞内TG抑制效能而选择。HepG2细胞在10%在10%热灭活胎牛血清FBS、用1%抗菌素加强的杜尔贝科氏最低必需伊格尔氏培养基DMEM中培养。
为了调查阳春砂对由于内质网应激增加的甘油三酯TG的抑制效果,培养16小时HepG2细胞,培养液包括含各浓度100、200、500μg/ml的阳春砂提取物的组和对照组。3小时之后处理衣霉素(2μg/ml),持续培养24小时。
为了测量培养后TG含量,HepG2细胞在体积比(v/v/v)8:4:3的氯仿-甲醇-水溶液(chlorofor-methanol-H2O solution)中均质化。在常温下培养1小时后,进行转速3000rpm的10分钟(min)圆心分离。去除上层液后,将沉淀物干燥24小时。在乙醇中溶解后,利用TG试剂盒(AM 157S-K与AM202-K,Asan Pharmaceutical,韩国)检查肝甘油三酯TG,标准化为蛋白质(protein)浓度。
图2是通过本发明的实验例表示随浓度的阳春砂提取物抑制细胞内TG生成的图表。
其结果,进行了衣霉素处理的组与对照组相比,甘油三酯TG的含量有意义地增加。但是,进行阳春砂提取物预处理的组中,浓度相关地抑制了由衣霉素引起的TG的增加。即在生物体外的TG分析结果,确认了阳春砂提取物在HepG2细胞中浓度相关地抑制由衣霉素诱发的TG水平的增加。通过这种结果,可知阳春砂提取物在HepG2细胞中具有减少细胞内TG水平的效果。
5)老鼠模型中阳春砂提取物对肝TG水平的效果
为了在生物体内模型中确认阳春砂提取物的生物体外对由内质网应激引起的甘油三酯蓄积抑制效果,向C57BL/6老鼠给药多种浓度的阳春砂提取物之后,给药衣霉素,并测量了蓄积于肝的甘油三酯的量。
动物为24~26g的C57BL/6老鼠(8周龄)购买于Central Lab.Animal Inc.公司(首尔,韩国)。老鼠随机地分为5组(n=6):非给药对照组(control group),培养对照组(衣霉素单独处理组),衣霉素和阳春砂提取物100mg/kg给药组,衣霉素和阳春砂提取物200mg/kg给药组,衣霉素和阳春砂提取物500mg/kg给药组。为了适应环境,利用三天在动物饲养室充分供给一般混合饲料和水。
阳春砂提取物经口给药7天。第7天以腹腔注射给药衣霉素(1mg/kg体重)24小时。动物实验得到圆光大学动物实验伦理委员会(Wonkwang University Animal ExperimentEthics Committee)的承认,实验室动物的使用和管理遵循机构指引。
按照下列步骤,从肝提取肝脂(Hepatic lipid)。肝组织(liver tissue)在体积比2:1的氯仿甲醇溶液中均质化,在常温培育一小时后,进行转速3000rpm的10分钟圆心分离。去除上层液之后,沉淀物干燥24小时。在乙醇中溶解后,肝甘油三酯TG利用TG试剂盒(AM157S-K和AM 202-K(Asan制药,韩国)检查,标准化为蛋白质浓度。
图3是通过本发明的实验例表示随浓度的阳春砂提取物抑制动物的TG生成的图表。
其结果,衣霉素组中,肝的TG含量与对照组相比增加2倍以上,但是进行了阳春砂提取物处理的组浓度相关地抑制了由衣霉素引起的肝内的脂肪蓄积。即,在生物体内实验中,对C57BL/6老鼠预处理阳春砂提取物并注射24小时衣霉素之后,测量肝TG水平来进行了确认,肝TG水平在衣霉素注射后显著增加。但是,阳春砂提取物浓度相关地减少了这种TG水平的增加。通过这种结果,在生物体内模型中也可以确认阳春砂提取物的甘油三酯蓄积抑制效果。
6)阳春砂提取物对由衣霉素引起的内质网应激相关基因表达产生的影响
本发明中为了确认基于阳春砂提取物的脂肪肝改善是否与内质网应激的减少有关,测量了内质网应激标志物相关基因GRP78、CHOP蛋白质和mRNA量。
为调查阳春砂提取物对内质网应激的抑制效果,向C57BL/6老鼠给药7天多种浓度的阳春砂提取物。然后,作为药物内质网应激诱导剂(pharmaceutical ER stressinducer)给药衣霉素,测量肝内与内质网应激相关的基因GRP78、CHOP蛋白质和mRNA量。
利用包含cDNA模板(template)、引物(primer)、SYBR Green PCR Master MIX的反应混合物和利用7500快速RT-PCR系统,测量实时PCR,总RNA是利用TRlzol(英杰公司(Invitrogen),德国达姆施塔特)从实验鼠中分离。
另外,蛋白质(40μg per well)通过8%凝胶的十二烷基硫酸钠-聚丙烯酰胺凝胶电泳(sodium dodecyl sulfate-polyacrylamide gel electrophoresis)SDS-PAGE分离,用聚偏二氟乙烯(polyvinylidene difluoride)PVDF薄膜转移。封闭的薄膜与内质网应激的标志物78-kDa葡萄糖调节蛋白(GRP78;BiP)&C/EBP的同源蛋白(CHOP)的初级抗体一起培养。蛋白质使用增强化学发光蛋白印迹检测试剂盒(安玛西亚(Amersham)公司,瑞典乌普萨拉)检查。
图4是通过本发明的实验例表示阳春砂提取物对由衣霉素引起的内质网应激相关基因表达的影响的图表。
其结果,与衣霉素对照组相比,给药阳春砂提取物之后给药衣霉素的组之间,GRP78、CHOP蛋白质和mRNA的表达比对照组有意义地减少。这可以确认阳春砂提取物对肝细胞中药物内质网应激诱导剂的抑制效能。
7)阳春砂对由衣霉素引起的脂肪合成相关基因表达的影响
为了明确阳春砂提取物的肝保护效果的机制,调查阳春砂提取物对脂肪生成的效果。
即,为了确认阳春砂提取物对内质网应激诱发甘油三酯的抑制效果机制,向C57BL/6老鼠给药7天各浓度阳春砂提取物。然后,给药作为内质网应激诱导剂的衣霉素,测量了已知为与肝内脂肪合成相关基因的乙酰辅酶A羧化酶AC、脂肪酸合酶FAS、固醇调节元件结合蛋白SREBP-1表达量。
图5是通过本发明的实验例表示阳春砂提取物对由衣霉素引起的脂肪合成相关基因表达的影响的图表。
其结果,与衣霉素给药对照组相比,在阳春砂提取物给药组中,已知为诱导肝内脂肪合成的基因ACC和FAS mRNA有意义地减少。另外,对ACC和FAS的表达造成影响的已知为阳春砂转录因子的SREBP-1的表达比衣霉素给药对照组有意义地减少。
在先的研究中,已知内质网应激激活主要的脂肪形成转录因子SREBP-1,从而增加诸如ACC和FAS的致脂基因的表达。因此,可以确认阳春砂提取物抑制由内质网应激促进的SREBP-1的表达,进而抑制诸如FAS、ACC的致脂基因,从而改善脂肪肝。
8)统计处理
数据表示为平均数(S.E.M.)的平均数±标准差表示。统计上重要的差异点是通过单因素方差分析测量后进行邓肯多重范围检验。在统计分析中小于等于0.05的p值视为有意义。
9)考察
为了确认阳春砂提取物预防及治疗改善脂肪肝的效能,在生物体外和生物体内确认了甘油三酯蓄积抑制效能。
首先,在HepG2细胞,阳春砂提取物到浓度500μg/ml为止未出现毒性。因此,进行各浓度的阳春砂提取物处理之后进行内质网应激诱导剂——衣霉素处理来确认的结果,阳春砂提取物在HepG2细胞及C57BL/6老鼠有意义地抑制由衣霉素引起的TG含量的增加。
另外,抑制内质网应激相关GRP78、CHOP基因的表达,抑制脂肪合成相关SREBP-1的表达。由此,证明了阳春砂提取物对由衣霉素诱导内质网应激及脂肪合成引起的脂肪肝生成的效能。由此,本发明开发出阳春砂提取物的预防及治疗改善脂肪肝的效能组成物。
Claims (1)
1.一种用于预防或改善由内质网应激引起的脂肪肝生成的保健功能组成物,其特征在于,作为有效成分含有阳春砂提取物,所述阳春砂提取物是用水提取的,以老鼠经口给药基准含100~500mg/kg所述阳春砂提取物,所述阳春砂提取物在HepG2细胞和老鼠中抑制由衣霉素诱发的甘油三酯的生成,在老鼠中抑制内质网应激相关基因GRP78、CHOP的蛋白质及mRNA表达,抑制脂肪肝合成相关基因乙酰辅酶A羧化酶ACC、脂肪酸合酶FAS、固醇调节元件结合蛋白SREBP-1的蛋白质及mRNA表达。
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