呂圭源,蘇 潔,陳素紅
(1.浙江中醫(yī)藥大學(xué)藥物研究所,浙江杭州 310053;2.浙江工業(yè)大學(xué)長三角綠色制藥協(xié)同創(chuàng)新中心,浙江杭州 310014)
中藥抗高血壓藥理學(xué)研究現(xiàn)狀與展望
呂圭源1,蘇 潔1,陳素紅2
(1.浙江中醫(yī)藥大學(xué)藥物研究所,浙江杭州 310053;2.浙江工業(yè)大學(xué)長三角綠色制藥協(xié)同創(chuàng)新中心,浙江杭州 310014)
呂圭源,浙江中醫(yī)藥大學(xué)藥物研究所所長,博士生導(dǎo)師。國家新藥、保健食品審評資深專家。全國優(yōu)秀教師,全國優(yōu)秀科技工作者,中央掌握聯(lián)系專家,浙江省有突出貢獻中青年專家。世中聯(lián)中藥和中藥保健品分會副會長,中國中西醫(yī)結(jié)合學(xué)會中藥分會主任委員。主要從事中藥抗高血壓、代謝性疾病等藥理學(xué)和產(chǎn)品開發(fā)研究,主持國家重大新藥創(chuàng)制專項和973計劃等重大項目10余項??蒲谐晒@獎30項,其中國家科技進步二等獎和浙江省科技一等獎等5項。獲新藥證書1本,臨床批件4個,保健食品批文2個,發(fā)明專利3項。培養(yǎng)博士和碩士151名,在讀20余名。
高血壓病的發(fā)病率和增長率很高,病理病機復(fù)雜不清,嚴重危害人類健康。目前,高血壓病無法根治,現(xiàn)用于治療高血壓病的化學(xué)藥降壓療效顯著,但需終身應(yīng)用和需多藥合用,也有明顯不良反應(yīng),而降低高血壓并發(fā)癥作用不顯著。中藥有中醫(yī)理論指導(dǎo),在降壓的同時能改善代謝異常,降低并發(fā)癥和預(yù)后甚優(yōu),其優(yōu)勢或潛能尚未充分發(fā)揮,臨床應(yīng)用尚少。代謝性高血壓已成為高血壓病主體,其形成機制主要涉及代謝異常相關(guān)胰島素抵抗和代謝性炎癥等始動病理機制。系統(tǒng)闡述中藥抗高血壓藥理學(xué)研究等現(xiàn)狀、尤其代謝性高血壓模型的研制與應(yīng)用,對開展中藥治療高血壓、尤其治愈高血壓的新探索具有十分重要的意義。
高血壓;中藥;藥理學(xué);代謝性高血壓;動物模型
高血壓病是目前發(fā)病率和增長率極高的最常見心血管或代謝性疾病,嚴重危害人類健康。目前,全球高血壓人群已超9.72億人,我國成人高血壓患病率可高達33%,患者約達3.3億[1]。高血壓病又是導(dǎo)致心、腦、腎和眼等重要靶器官損害的主要危險因素。現(xiàn)用于治療高血壓病的化學(xué)藥、作為世界衛(wèi)生組織推薦的一線降壓藥為利尿劑、β受體阻滯劑、鈣離子拮抗劑、血管緊張素轉(zhuǎn)移酶抑制劑和血管緊張素Ⅱ受體拮抗劑等六大類,品種不少,降壓作用也強。但任何一種降壓藥只能對30%~50%的患者有效,10%~20%患者需3種及以上藥物聯(lián)合應(yīng)用;并還產(chǎn)生血脂等升高、水鈉潴留、踝腫、咳嗽、面紅和眩暈等不良反應(yīng)。中藥有中醫(yī)理論指導(dǎo),在降壓的同時還可改變代謝異常等,具有獨特的療效優(yōu)勢,對防治高血壓病有很大潛力。中藥治療高血壓的研究日趨增多,現(xiàn)代藥理研究和臨床研究均表明,不少中藥及中成藥如野菊花和牛黃降壓丸有明顯降壓作用,但實際臨床應(yīng)用仍較少,市場占有量小,其主要原因可能是中藥治療高血壓的優(yōu)勢或潛能未充分發(fā)揮。中藥藥理學(xué)研究是闡述或展示其優(yōu)勢的主要途經(jīng)。因此,本文主要綜述中藥抗高血壓藥理學(xué)研究的現(xiàn)狀及研究展望。
1.1 抗高血壓中藥飲片
中醫(yī)認為,高血壓的病理特點為本虛標實,本虛為陰虛、血虛、陽虛和氣虛;標實為肝火、血瘀、水停和痰飲,標本俱病,虛實夾雜。中醫(yī)藥治療高血壓病的原則主要是補虛瀉實,適其陰陽,臨床上權(quán)衡標本、緩急和輕重。單味中藥治療高血壓按其主要功效分類見表1,包括平肝熄風(fēng)藥、清熱藥、活血化瘀藥、補虛藥和袪風(fēng)濕藥等。
1.2 抗高血壓中成藥
現(xiàn)有抗高血壓中成藥主要以清熱瀉火、平肝潛陽、活血化瘀、滋補肝腎等治法為多,針對老年高血壓病患者或高血壓后期的陰陽兩虛證,具有陰陽雙調(diào)功效的中成藥很少。常用抗高血壓中成藥分類見表2。①清熱瀉火類中成藥:清肝瀉火、清熱安神,用以治療肝火上炎型高血壓,如牛黃降壓丸[27]、鎮(zhèn)腦寧膠囊[28]和清肝降壓膠囊[29]等。②平肝潛陽類中成藥:平肝潛陽息風(fēng)、鎮(zhèn)靜安神,用以治療肝陽上亢型高血壓,如松齡血脈康膠囊[30]、天麻鉤藤顆粒[31]和清腦降壓顆粒[32]等。③活血化瘀類中成藥:活血化瘀、通脈活絡(luò),用以治療瘀血阻絡(luò)型高血壓,如強力天麻杜仲膠囊[33]、心脈通膠囊[34]和愈風(fēng)寧心片等。④滋補肝腎類中成藥:滋養(yǎng)肝腎、養(yǎng)陰填精,用以治療肝腎陰虛型高血壓,如杞菊地黃丸[35]、六味地黃丸[36]和天麻首烏片[37]等。⑤除痰化濁類中成藥:除痰化濁、健脾和胃,用以治療痰濕壅盛型高血壓,如眩暈寧顆粒、化濁輕身顆粒和山莊降脂片等。⑥其他中成藥:如康脈心(血靈),補血活血,用于陰虛陽亢兼血瘀引起的Ⅱ期高血壓病。
1.3 抗高血壓中藥成分
抗高血壓中藥成分分類見表3。①生物堿類:具有顯著生理活性的含氮有機化合物,許多中藥中富含生物堿,具有降壓作用的有小檗堿(黃連素)[38]、川芎嗪[39-40]和鉤藤堿[41]等。②黃酮類:多為2-苯基色原酮基本母核的衍生物,常見取代基有-OH基、-OCH3基以及萜類側(cè)鏈。具有降壓作用的有紅花黃素[42]、芹菜素[43]和銀杏葉總黃酮[44]等。③皂苷類:廣泛存在于植物界的一類苷類成分,水溶液振搖后可產(chǎn)生持久的肥皂樣泡沫。具有降壓的有人參皂苷Rb1[45]、黃芪皂苷[46]和無患子皂苷[47]等。④多糖類:是由10個以上的單糖通過糖苷鍵連接形成的含醛基或酮基的天然高分子聚合物,具有降壓作用的有枸杞多糖[48]、黃芪多糖[49]和天麻多糖[50]等。⑤其他成分萜類、醌類、香豆素類、木質(zhì)素類和氨基酸等也有降壓的效果,如決明子蒽醌苷[51]、前胡香豆素[52]和芝麻素[53]等。藥理實驗證明,這些成分有降壓作用,但單用是否能治療高血壓病,仍有待深入研究。
表1 抗高血壓中藥飲片按功效分類
表2 抗高血壓中成藥按功效分類
表3 抗高血壓中藥成分分類
2.1 高血壓動物模型
動物模型是研究藥物藥理作用的前提或基礎(chǔ),中藥降壓藥理作用研究應(yīng)用的動物模型主要有:①遺傳性高血壓動物模型,如自發(fā)性高血壓大鼠(spontaneously hypertensive rat,SHR)、卒中傾向自發(fā)性高血壓大鼠(stroke prone spontaneously hypertensive rat,SHRsp)、轉(zhuǎn)基因高血壓大鼠和轉(zhuǎn)基因高血壓小鼠等;②腎性高血壓動物模型,腎性高血壓大鼠(renal hypertensive rat,RHR)包括單腎單夾型、兩腎一夾型和兩腎兩夾型等;③藥物誘發(fā)高血壓動物模型,如左旋硝基精氨酸和脫氧皮質(zhì)酮醋酸鹽誘導(dǎo)等;④神經(jīng)內(nèi)分泌型高血壓動物模型;⑤妊娠高血壓綜合征動物模型;⑥高血壓證候動物模型,如肝陽上亢型、氣虛血瘀型和肝腎陰虛型等;⑦應(yīng)激性高血壓動物模型;⑧代謝性高血壓動物模型,近年來很多學(xué)者提出代謝性高血壓的新概念,即由代謝異常引起的高血壓稱為代謝性高血壓[54],通過改善代謝危險因素有助于血壓控制的高血壓[55]。我們通過喂食含高鹽、高糖、高脂等高能量飼料建立了多種代謝性高血壓模型大鼠,包括高脂高糖飲食法、飲酒法和高鹽飲食法等。這些模型在血壓升高的同時,會出現(xiàn)血脂、血糖、尿酸等代謝異常,并有肝腎功能損傷。
2.2 降壓藥效研究
中藥降壓藥效研究常應(yīng)用SHR和RHR模型等,多采用無創(chuàng)尾動脈測壓技術(shù)檢測模型動物的血壓(收縮壓、舒張壓和平均動脈壓)。研究報道,能降低SHR血壓的中藥有菊花、夏枯草、牛黃降壓丸、杜仲降壓片、芥子堿和吳茱萸次堿等;能降低RHR血壓的有白芷、桑寄生、天麻鉤藤顆粒、心腦靜和槲皮素等(表4)。降壓藥效研究通常需觀察一個樣本的一次和多次用藥的降壓作用,即動物一次給藥后分別在1,2,3,4,6和8 h等時間點檢測血壓,以及多次給藥后分別在給藥后1,7和14 d等時間點檢測血壓,并且還要觀察藥物對心功能的影響。如康脈心一次給藥后1 h SHR血壓已有下降,2 h降壓作用最強,維持時間約為6 h;多次給藥后至14 d仍有降壓作用,且對心率無影響[56]。通過應(yīng)用喂食含高鹽、高糖和高脂等高能量飼料制備的代謝性高血壓模型大鼠,發(fā)現(xiàn)鐵皮石斛[57]、濟脈通片[58]和芍藥提取物[59]等在降壓的同時還能改善代謝和肝功能異常等,但是應(yīng)用代謝性高血壓模型動物研究中藥降壓藥效仍然較少。
2.3 降低血壓波動性研究
血壓不是恒定不變的,在某段時間內(nèi),血壓波動的性質(zhì)和程度稱為血壓波動性,受交感神經(jīng)、迷走神經(jīng)和體液因子等調(diào)節(jié),是獨立于血壓水平之外導(dǎo)致靶器官損傷的重要原因之一。因此,降低血壓波動性對于高血壓的治療有非常重要的作用。常采用全植入式遙測法和動脈PE導(dǎo)管插管法,可監(jiān)測24 h連續(xù)血壓,分析血壓波動性。有文獻報道了中藥對血壓波動性的藥理作用,如濟脈通(夏枯草、野菊花及決明子)能降低RHR 24 h短期平均動脈壓波動性;濟脈通和硝苯地平聯(lián)用能顯著降低RHR 24 h短期收縮壓、舒張壓和平均動脈壓的波動性[60]。白花丹參具有活血化瘀之功效,雖然對SHR沒有急性降壓作用,但卻可降低SHR 4 h收縮壓、舒張壓和平均動脈壓的波動性,并能改善壓力感受反射敏感性功能[61]。天麻鉤藤飲有清熱平肝、潛陽熄風(fēng)之效,其中兩味君藥天麻和鉤藤的主要成分天麻素和鉤藤總堿,能協(xié)同降低SHR血壓,但不降低血壓波動性[62]。
表4 應(yīng)用高血壓動物模型研究降壓中藥藥效
2.4 藥效比較與特色研究
中藥研究更重要的目的是提高療效、展示特色,系統(tǒng)的藥效比較評價技術(shù)是抗高血壓中藥研究的關(guān)鍵。采用特色模型動物,通過系統(tǒng)比較藥理研究,從而提高其療效或展示優(yōu)勢特色。藥效比較與特色研究包括降壓藥效和相關(guān)藥效等比較研究。①降壓藥效比較:整體實驗比細胞等離體實驗的結(jié)果更可靠,通過不同中藥的整體降壓比較實驗可篩選出藥效更強抗高血壓中藥,為研發(fā)高效抗高血壓中藥新藥臨床應(yīng)用提供基礎(chǔ)。②相關(guān)藥效比較:中藥成分復(fù)雜,藥理作用廣泛,很多抗高血壓中藥如野菊花等,除具有降血壓作用,還有降血脂、降血黏度、改善微循環(huán)等相關(guān)藥理作用,可顯示中藥多靶點作用;并進一步比較其對血壓波動性影響,有利于闡述中藥治療高血壓病的遠期療效優(yōu)勢。
2.5 降壓機制研究
目前,關(guān)于高血壓的發(fā)病機制研究最多的主要是遺傳基因、中樞神經(jīng)和交感神經(jīng)系統(tǒng)功能亢進、腎素-血管緊張素-醛固酮系統(tǒng)(renin-angiotensinaldosterone system,RAAS)亢進、細胞膜離子轉(zhuǎn)運異常、心排血量改變、胰島素抵抗及血管內(nèi)皮功能受損等方面。中藥能多途徑、多靶點預(yù)防和治療高血壓(表5)。
表5 不同中藥的降壓機制
中藥通過多個途徑降低血壓,如野菊花提取物可通過抑制RAAS[64],改善內(nèi)皮功能[65],改善血液流變學(xué)[9]等機制降低SHR大鼠血壓。另外研究發(fā)現(xiàn),野菊花提取物降壓的相關(guān)分子機制可能與抑制磷脂酰肌醇3-激酶和細胞外調(diào)節(jié)蛋白激酶等信號通路有關(guān)[64,66];康脈心可通過抑制RAAS、改善內(nèi)皮功能[67]及舒張血管[68],或直接通過中樞[69]等機制降低多種高血壓大鼠的血壓;濟脈通(復(fù)方菊明)可通過抑制RAAS[70]、改善內(nèi)皮功能[71]及擴張血管[72]等機制降低多種高血壓大鼠的血壓。
2.6 藥動學(xué)研究
中藥藥動學(xué)是研究中藥活性成分、組分、中藥單方和復(fù)方體內(nèi)吸收、分布、代謝和排泄的動態(tài)變化規(guī)律及其體內(nèi)時量-時效關(guān)系,并用數(shù)學(xué)函數(shù)加以定量描述。中藥成分復(fù)雜、有效成分不明確、血藥濃度低,使中藥藥動學(xué)研究難度較大??垢哐獕褐兴幩巹訉W(xué)研究多采用體內(nèi)藥物濃度法和生物效應(yīng)法等。我們采用化學(xué)-藥效結(jié)合法,將康脈心分離成不同提取物進行降壓實驗,表明其降壓有效成分為阿魏酸、腺苷和?;撬岬?;并發(fā)現(xiàn)康脈心給藥后的降壓效應(yīng)明顯滯后于阿魏酸的血藥濃度,更明確了阿魏酸是其降壓有效成分之一。進一步的康脈心口服藥動學(xué)研究發(fā)現(xiàn),阿魏酸在大鼠體內(nèi)呈一級動力學(xué)消除,具有開放二室模型的特征,吸收半衰期tl/2Ka為6.781 min,分布半衰期tl/2α為17.82 min,消除半衰期t1/2β為179.4 min,作用時間持久(t1/2β=26.45tl/2Ka)[73]。濟脈通血藥成分分析結(jié)果顯示,山奈酚、木犀草素、蒙花苷等黃酮類成分為濟脈通中可入血成分[74],提示上述成分可能為濟脈通的降壓藥效物質(zhì)。進一步的濟脈通口服藥動學(xué)研究表明,木犀草素在SHR體內(nèi)呈一級動力學(xué)消除,達峰濃度cmax為1.08 mg·L-1,達峰時間tmax為1.0 h,消除半衰期為4.08 h,平均滯留時間為7.38 h;且在SHR和SD大鼠體內(nèi)的藥動學(xué)過程存在差異,在SHR體內(nèi)呈現(xiàn)吸收快消除快的現(xiàn)象,說明木犀草素血藥濃度與高血壓狀態(tài)存在相關(guān)性[75]。另外,天麻鉤藤飲藥動學(xué)研究發(fā)現(xiàn),其最低起效劑量為0.61 g·kg-1,相當于臨床等效劑量的效應(yīng)消退半衰期為1.55 h,效應(yīng)維持時間為5.34 h,體存血藥濃度達峰時間為2.04 h[76]。但是,單體成分藥動學(xué)參數(shù)難以完整地表達中藥的體內(nèi)作用規(guī)律,非入血成分可能也參與發(fā)揮療效,有待繼續(xù)研究。
臨床高血壓可分為原發(fā)性高血壓、腎性高血壓、單純性收縮期高血壓等各種類型,不少中藥在臨床應(yīng)用及臨床試驗中發(fā)現(xiàn)對各型高血壓有治療作用(表6)。①原發(fā)性高血壓:基于目前的醫(yī)學(xué)發(fā)展水平和檢查手段,不能發(fā)現(xiàn)導(dǎo)致血壓升高的確切病因,則稱為原發(fā)性高血壓。臨床治療原發(fā)性高血壓的降壓中藥有松齡血脈康膠囊、康脈心、安腦丸和醒腦降壓丸等??得}心治療400例陰虛陽亢兼血瘀證Ⅱ期高血壓患者,其降壓總有效率為74.0%,顯效率為33.0%;癥狀有效率為79.33%,顯效率為35.67%。松齡血脈康膠囊治療97例原發(fā)性高血壓Ⅰ或Ⅱ期患者,其降壓總有效率為89.7%[77]。②腎性高血壓:腎血管或腎實質(zhì)性病變引起的高血壓。臨床治療腎性高血壓病的中藥有益腎降壓方、脈君安等。益腎降壓方治療26例輕、中度腎實質(zhì)性高血壓(腎功能代償、失代償期)患者,其總有效率為84.6%,治療后腎功能好轉(zhuǎn),尿蛋白減少,尿鈉增加。③單純性收縮期高血壓:單純收縮壓升高而舒張血壓不高的一種狀態(tài),是老年人群中最常見的高血壓類型。臨床治療單純性收縮期高血壓的中藥有牛黃降壓丸、清肝降壓膠囊、暈可平等。牛黃降壓丸治療49例單純性收縮期高血壓患者,總有效率達93.88%[78]。④頑固性高血壓:高血壓人群即使在接受調(diào)整生活方式和服用3種或3種以上包括利尿藥在內(nèi)的不同作用機制的最佳劑量降壓藥物,血壓仍不能控制在目標血壓水平。臨床治療頑固性高血壓的中藥有安宮降壓丸、天麻鉤藤顆粒等。安宮降壓丸治療30例患者在常規(guī)治療的基礎(chǔ)上再聯(lián)合應(yīng)用安宮降壓丸進行治療,每次1丸,每日2次,能治療頭痛、頭暈、心悸以及失眠癥狀等[79]。系統(tǒng)規(guī)范的中藥抗高血壓臨床研究較少,有待深入。
表6 臨床治療高血壓的中成藥
4.1 代謝性高血壓成為高血壓病主體
近年來,抗高血壓藥物發(fā)展速度快,在抗高血壓藥效、機制、臨床等研究中取得了較大的成果,為廣大高血壓患者提供了很好的選擇,使高血壓知曉率、治療率、控制率均有一定程度的提高,但是發(fā)病率始終居高不下,這與糖尿病、血脂紊亂、肥胖等代謝疾病發(fā)病率大幅度上升有關(guān)。據(jù)調(diào)查,僅10%~ 20%以下為單純高血壓患者[80-81],絕大多數(shù)高血壓患者合并有不同形式的代謝紊亂,高血壓伴血糖異常約占高血壓患者的55.3%,伴血脂異常約占69.5%[82],伴血黏度異常約占86.8%,伴尿酸異常約占31.7%等。2007年歐洲心臟病學(xué)會指南納入的影響高血壓的10個危險因素中,代謝危險因素就占6個,高血壓被認為是一種代謝病。因此,在遺傳背景并未發(fā)生明顯變化的前提下,代謝紊亂已成為高血壓患病率急劇增加的主要動力。1993年P(guān)ool[54]首次提出,糖尿病和胰島素抵抗相關(guān)的高血壓或由代謝異常引起的高血壓稱為代謝性高血壓,通過改善代謝危險因素有助于血壓控制,代謝性高血壓成為高血壓病的主體,其區(qū)別于遺傳性高血壓的最大特點是由飲食不節(jié)(嗜酒、高脂、高糖等飲食)和運動減少等不良生活方式引起,血壓升高伴隨代謝紊亂,增加了心血管危險,加重靶器官損害,使高血壓治療預(yù)后不佳。
4.2 改善代謝異常為治愈高血壓提供新思路
現(xiàn)有一線抗高血壓藥如利尿藥、鈣通道阻滯劑、血管緊張素轉(zhuǎn)化酶抑制劑和β受體阻斷藥等,降壓作用強,但主要作用局限于與血壓直接相關(guān)的各個環(huán)節(jié),對代謝異常這個關(guān)鍵環(huán)節(jié)作用較小,因而只能控制血壓,不能改善高血壓患者伴隨的糖脂等代謝異常,降壓同時仍存在嚴重的心血管病風(fēng)險,遠不能適應(yīng)高血壓病的治療需要。中藥治療高血壓的研究日趨增多,不少中藥如野菊花和夏枯草等被證明有明顯降壓作用,且多數(shù)具有降血脂、降血糖等調(diào)節(jié)代謝異常,也有中成藥如牛黃降壓丸和愈風(fēng)寧心片等,但實際臨床應(yīng)用仍很少,市場占有量小,中藥治療高血壓的優(yōu)勢或潛能沒有充分發(fā)揮。其主要原因就是當前評價抗高血壓藥物的動物模型尚不能客觀評價代謝性高血壓的特征,如現(xiàn)有高血壓動物模型基本上采用遺傳學(xué)、手術(shù)和藥物等方法建立,而與代謝異常高血壓患者的病理機制距離很遠。目前高血壓主要用化藥治療,需終身用藥,高血壓成了“不治之癥”。但民間已有用中草藥治療血壓恢復(fù)正??赏K幍膶嵗?。因此,我們在抗高血壓改善代謝研究深入的基礎(chǔ)上,提出中藥從“改善代謝異常”治愈高血壓病的新思路,在今后的中藥抗高血壓研究開發(fā)過程中,創(chuàng)新研究方法尤其是構(gòu)建能客觀評價抗代謝性高血壓的動物模型,發(fā)現(xiàn)或研制既能降低血壓又能改變代謝異常新的中藥治療藥物,展示中藥治療高血壓的優(yōu)勢,并為治愈高血壓提供新的探索方向,是中藥抗高血壓藥理學(xué)研究的當務(wù)之急。
4.3 代謝性高血壓模型動物為中藥抗高血壓深入研究提供了新方法
我們針對代謝性高血壓病的特點,根據(jù)飲食、情緒等人類不良生活方式致病因素,模擬“飲食失節(jié)、七情內(nèi)傷、起居無常、勞逸失度”等病因造模。針對高血壓患者多伴血脂、血糖、血黏度或血尿酸升高等臨床癥狀,模擬“過度飲酒、過食肥甘、怒則氣上”等人類不良生活方式,制備一系列的代謝性高血壓模型動物。如通過喂食含高鹽、高糖、高脂、高嘌呤等高能量飼料模擬“飲食不節(jié)”,制備多種代謝性高血壓模型動物。模型動物血壓呈明顯升高,且伴有血脂、血糖或尿酸升高等代謝異常,或伴肝腎功能損傷等。通過代謝性高血壓動物模型,應(yīng)用動態(tài)血壓、激光多普勒等測定技術(shù),測定血壓波動性、微循環(huán)血流等客觀評價指標,將降壓中藥和化藥一線降壓藥對高血壓及相關(guān)藥效進行了對比研究,發(fā)現(xiàn)降壓中藥如鐵皮石斛、濟脈通片等能明顯改善模型動物代謝異常,且血壓明顯降低。
根據(jù)上述結(jié)果分析,高血壓病發(fā)病率高,心、腦、腎、眼等并發(fā)癥嚴重[83],多年來中藥在抗高血壓藥效、機制和臨床等研究中取得了較多的成果,有抗高血壓中藥上市。但是近年研究發(fā)現(xiàn)代謝異常已成為高血壓病的主要誘因,從而形成的代謝性高血壓成為高血壓病的主體,它的形成機制主要涉及代謝異常相關(guān)胰島素抵抗、代謝性炎癥及腸道免疫炎癥激活的始動病理機制[84-86]?,F(xiàn)治療高血壓病的一線降壓藥和正在研究的抗高血壓新藥主要作用于與血壓直接相關(guān)的各個環(huán)節(jié),而對代謝異常這個關(guān)鍵環(huán)節(jié)沒有作用,這可能是高血壓發(fā)病人數(shù)逐年快速增長的主要原因,進一步分析發(fā)現(xiàn)經(jīng)典高血壓模型動物如SHR和RHR等,均未能反映代謝性高血壓的特點,未能用于抗代謝性高血壓中藥的藥效研究。模擬不良生活方式研究制備有特色的代謝性高血壓模型動物,可為篩選研制抗代謝性高血壓中藥新藥或展示中藥特色優(yōu)勢提供新的模型動物及新方法,為治愈高血壓病提供新的探索方向,有可能對高血壓的治療產(chǎn)生突破性進展。
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Current situation and prospect of antihypertensive pharmacology of traditional Chinese medicine
LYU Gui-yuan1,SU Jie1,CHEN Su-hong2
(1.Institute of Materia Medica,Zhejiang Chinese Medical University,Hangzhou 310053,China; 2.Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology,Hangzhou310014,China)
The incidence and its growth rate of hypertension are both very high.Its pathology and pathogenesis are complex and unclear,and it does serious harm to human health.Hypertension remains incurable.Chemical medicine has good effect on hypertension,but life-long application and multi-drug combination are required,with significant adverse reactions.Also,complications can′t be effectively alleviated.Traditional Chinese medicine(TCM)guided by traditional theories,can lower blood pressure,improve metabolic abnormalities and reduce complications.Its advantages or potentials have not been fully exploited and clinical application is inadequate.Metabolic hypertension has become the main form of hypertension,and its formation mechanism is mainly related to metabolic abnormalities and insulin resistance,metabolic inflammation and other pathology and pathogenesis.A better understanding of the current status of antihypertensive pharmacology of TCM,especially devel?opment and application of metabolic hypertension models is of great significance for TCM treatment of hypertension,and for exploration of new approaches to hypertension.
hypertension;traditional Chinese medicine;pharmacology;metabolic hypertension; animal model
CHEN Su-hong,Tel:(0571)86613601,E-mail:chensuhong@aliyun.com
R96,R972
A
1000-3002-(2016)12-1301-11
10.3867/j.issn.1000-3002.2016.12.009
Foundation item:The project supported by National Natural Science Foundation of China(81274123);Zhejiang Provincial Key Research and Development Project(2016C03G2120164);and Zhejiang Provincial Key Laboratory Project(2012E10002)
2016-11-29接受日期:2016-12-22)
(本文編輯:齊春會)
國家自然科學(xué)基金(81274123);浙江省重點研發(fā)計劃項目(2016C03G2120164);浙江省重點實驗室(2012E10002)
陳素紅,Tel:(0571)86613601,E-mail:chensuhong@ aliyun.com