TW202233075A - 使用植物乳酸桿菌tsp05分離株來降低嘌呤含量以及尿酸位準 - Google Patents
使用植物乳酸桿菌tsp05分離株來降低嘌呤含量以及尿酸位準 Download PDFInfo
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- TW202233075A TW202233075A TW110107159A TW110107159A TW202233075A TW 202233075 A TW202233075 A TW 202233075A TW 110107159 A TW110107159 A TW 110107159A TW 110107159 A TW110107159 A TW 110107159A TW 202233075 A TW202233075 A TW 202233075A
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Abstract
本發明揭示植物乳酸桿菌TSP05分離株可被用來降低一可食性材料的嘌呤含量以及血中尿酸位準。
Description
本發明是有關使用植物乳酸桿菌(
Lactobacillus plantarum) TSP05 (BCRC 910855)來降低一可食性材料的嘌呤含量。本發明亦有關使用植物乳酸桿菌TSP05 (BCRC 910855)來降低血中尿酸位準。
尿酸(uric acid)是嘌呤代謝(purine metabolism)的最終氧化產物(final oxidation product),會經由腎臟藉由尿液而被排出體外。若過度攝取菇類(mushrooms)、豆類(legumes)、肉類與海鮮(seafood)等富含嘌呤的食品(purine-rich food),容易導致尿酸的代謝發生異常[包括尿酸的過度產生(overproduction)或排泄不足(underexcretion)],而使得血中尿酸的位準過高,進而引起痛風(gout)與高尿酸血症(hyperuricemia)等疾病,被稱為尿酸代謝疾病(disorder of uric acid metabolism)。
由於現代人飲食習慣改變,尿酸代謝疾病的發生率(incidence)和盛行率(prevalence)已逐年增加,並且病患有年輕化的趨勢。因此,如何有效地降低富含嘌呤的食品中的嘌呤以及降低血中尿酸位準進而治療和/或預防尿酸代謝疾病,即成一個極為重要的研發課題。
目前已知有許多物理性或化學性方法(例如加工處理、吸附處理等)被用於降低食品中的嘌呤化合物含量,然而這些方法不僅操作較為繁雜,還需去除額外添加的化學試劑。而目前用於降低血中尿酸位準的藥物包括尿酸生成抑制劑(uricogenesis inhibitors)與尿酸排泄劑(uricosuric agents),然而,這些藥物在臨床應用上存在有療效不佳以及容易產生副作用(side effect)的問題。
乳酸菌(lactic acid bacteria, LAB)是屬於一般被公認為安全的(generally recognized as safe, GRAS)並且是為人所熟悉與廣泛使用的益生菌(probiotics),其已被發現到具有抑制腸胃道病原菌生長、緩和乳糖不耐症(lactose intolerance)、抗癌(anti-cancer)以及降血壓(antihypertension)等功效。目前可作為益生菌使用的乳酸菌有許多種類,例如乳酸桿菌屬(
Lactobacillus)、乳球菌屬(
Lactococcus)、小球菌屬(
Pediococcus)、腸球菌屬(
Enterococcus)、鏈球菌屬(
Streptococcus)、雙歧桿菌屬(
Bifidobacterium)、芽孢桿菌屬(
Bacillus)以及明串珠菌屬(
Leuconostoc)等。
已有研究嘗試使用乳酸菌來降解嘌呤以及降低血中尿酸位準。例如,CN 111388509 A揭示一種用於降解嘌呤以及降低血中尿酸的乳酸菌菌株,其是選自於發酵乳酸桿菌(
Lactobacillus fermentum) TSF331 (CGMCC No.15527)以及羅伊氏乳酸桿菌(
Lactobacillus reuteri) TSR332 (CGMCC No.15528)中的至少一者。在該中國專利案的實施例中,發酵乳酸桿菌TSF331與羅伊氏乳酸桿菌TSR332分別經由體外嘌呤分解實驗而被證實能夠有效地降解嘌呤。接著,發酵乳酸桿菌TSF331與羅伊氏乳酸桿菌TSR332分別經由動物實驗而被證明具有降低血中尿酸位準的效用。
雖然已存在有上述文獻報導,本技藝中仍然存在有一需要去篩選出具有降解嘌呤以及降低血中尿酸的效用之乳酸菌以供產業界之用。
發明概要
於本發明中,申請人發現植物乳酸桿菌(
Lactobacillus plantarum) TSP05 (BCRC 910855)不僅能夠於體外降解嘌呤以及於體內降低血中尿酸,還能顯著地提升發酵乳酸桿菌(
Lactobacillus fermentum) TSF331 (BCRC 910815)與羅伊氏乳酸桿菌(
Lactobacillus reuteri) TSR332 (BCRC 910816)的效用。
於是,在第一個方面,本發明提供一種用於降低一可食性材料的嘌呤含量之方法,其包括:將一具有嘌呤降解能力的微生物培養於該可食性材料中,其中該微生物是植物乳酸桿菌TSP05 (BCRC 910855)。
在第二個方面,本發明提供一種植物乳酸桿菌TSP05 (BCRC 910855)供應用於製備一用來降低血中尿酸位準之組成物的用途。
在第三個方面,本發明提供一種用來降低血中尿酸位準的方法,其包括對一有此需要的個體投予植物乳酸桿菌TSP05 (BCRC 910855)。
在第四個方面,本發明提供一種植物乳酸桿菌TSP05 (BCRC 910855)供應用於製備一用來治療和/或預防尿酸代謝疾病之組成物的用途。
在第五個方面,本發明提供一種用於治療一具有或被懷疑具有尿酸代謝疾病之個體的方法,其包括對該個體投予植物乳酸桿菌TSP05 (BCRC 910855)。
較佳地,進一步將發酵乳酸桿菌TSF331 (BCRC 910815)與羅伊氏乳酸桿菌TSR332 (BCRC 910816)拿來與植物乳酸桿菌TSP05 (BCRC 910855)組合使用。
發明的詳細說明
要被瞭解的是:若有任何一件前案刊物在此被引述,該前案刊物不構成一個下述承認:在台灣或任何其他國家之中,該前案刊物形成本技藝中的常見一般知識之一部分。
為了這本說明書之目的,將被清楚地瞭解的是:文字“包含有(comprising)”意指“包含但不限於”,以及文字“包括(comprises)”具有一對應的意義。
除非另外有所定義,在本文中所使用的所有技術性與科學術語具有熟悉本發明所屬技藝的人士所共同瞭解的意義。一熟悉本技藝者會認知到許多與那些被描述於本文中者相似或等效的方法和材料,它們可被用於實施本發明。當然,本發明決不受到所描述的方法和材料之限制。
本發明提供一種用於降低一可食性材料的嘌呤含量之方法,其包括:將一具有嘌呤降解能力的微生物培養於該可食性材料中,其中該微生物是植物乳酸桿菌(
Lactobacillus plantarum) TSP05 (BCRC 910855)。
如本發明所使用的,術語“嘌呤含量”意指具有嘌呤骨架(purine skeleton)的化合物之含量,具有嘌呤骨架的化合物包括,但不限於:嘌呤核苷(purine nucleosides)[諸如肌苷(inosine)、鳥苷(guanosine)等]、嘌呤核苷酸(purine nucleotides)[諸如肌苷酸(inosinic acid)等]以及核酸(nucleic acid)。
依據本發明,該可食性材料可包括,但不限於:菇類食品(mushroom food)、豆類食品(legume food)、肉類食品(meat food)、內臟食品(organ food)、海鮮食品(seafood)以及酒精飲料(alcoholic beverages)。
如本文中所使用的,術語“培養(culturing)”、“發酵(fermentation)”以及“培育(cultivation)”可被交換地使用。
可瞭解到的是,有關培養的操作條件會進一步隨著所使用的可食性材料的嘌呤含量、可食性材料與微生物的用量比例等因素而被變動,以便達致最佳的嘌呤降解效果。而這些操作條件的選擇是熟習此項技藝者能例行性地自行決定的。
依據本發明,該培養可在一範圍落在35℃至37℃內的溫度下被進行。
依據本發明,該培養可在該可食性材料的製備期間或之後被進行。
較佳地,本發明的方法進一步包括同時將發酵乳酸桿菌(
Lactobacillus fermentum) TSF331 (BCRC 910815)以及羅伊氏乳酸桿菌(
Lactobacillus reuteri) TSR332 (BCRC 910816)培養於該可食性材料中。
依據本發明,所使用的植物乳酸桿菌TSP05 (BCRC 910855)、發酵乳酸桿菌TSF331 (BCRC 910815)以及羅伊氏乳酸桿菌TSR332 (BCRC 910816)的菌數比可落在1:0.3:0.3至1:3:3的範圍內。在本發明的一個較佳具體例中,所使用的植物乳酸桿菌TSP05 (BCRC 910855)、發酵乳酸桿菌TSF331 (BCRC 910815)以及羅伊氏乳酸桿菌TSR332 (BCRC 910816)的菌數比為1:0.6:0.6。在本發明的另一個較佳具體例中,該菌數比為1:1:1。
本發明亦提供一種植物乳酸桿菌TSP05 (BCRC 910855)供應用於製備一用來降低血中尿酸位準之組成物的用途。本發明亦提供一種植物乳酸桿菌TSP05 (BCRC 910855)供應用於製備一用來治療和/或預防尿酸代謝疾病之組成物的用途。
依據本發明,該尿酸代謝疾病可包括,但不限於:痛風(gout)、高尿酸血症(hyperuricemia)、尿酸性腎石病(uric acid nephrolithiasis)、屢發性急性或慢性的痛風性關節炎(repeated acute or chronic gouty arthritis)、關節畸形(articular malformation),以及尿酸鹽腎病變(urate nephropathy)。
如本文中所使用的,術語“治療(treating)”或“治療(treatment)”尿酸代謝疾病意指該尿酸代謝疾病的嚴重性(severity)或該尿酸代謝疾病的症狀(symptom)被減少(reduced),或是該尿酸代謝疾病被部分地(partially)或完全地(entirely)消除(eliminated)。
如本文中所使用的,術語“預防(preventing)”或“預防(prevention)”尿酸代謝疾病意指一個體在還沒有被診斷具有該尿酸代謝疾病時,消除(eliminate)或減少(reduce)該尿酸代謝疾病的發生率(incidence),以及減緩(slow)、延遲(delay)、控制(control)或減少(decrease)該尿酸代謝疾病的可能性(likelihood)或機率(probability)。
依據本發明,植物乳酸桿菌TSP05 (BCRC 910855)可以是活菌或死菌、經濃縮的(concentrated)或未經濃縮的(non-concentrated)、液態(liquid)、糊狀(paste)、半固態(semi-solid),或固態(solid)[例如,丸(pellet)、細顆粒(granule)或粉末(powder)],並且可以是經熱去活的(heat-inactivated)、經冷凍的(frozen)、經乾燥的(dried),或經冷凍-乾燥的(freeze-dried)[例如,可呈冷凍乾燥形式或噴霧/流化床乾燥(spray/fluid bed dried)形式]。
較佳地,該組成物進一步包含發酵乳酸桿菌TSF331 (BCRC 910815)以及羅伊氏乳酸桿菌TSR332 (BCRC 910816)。
依據本發明,在該組成物中,植物乳酸桿菌TSP05 (BCRC 910855)、發酵乳酸桿菌TSF331 (BCRC 910815)以及羅伊氏乳酸桿菌TSR332 (BCRC 910816)的菌數比可落在1:0.3:0.3至1:3:3的範圍內。在本發明的一個較佳具體例中,植物乳酸桿菌TSP05 (BCRC 910855)、發酵乳酸桿菌TSF331 (BCRC 910815)以及羅伊氏乳酸桿菌TSR332 (BCRC 910816)的菌數比為1:0.6:0.6。在本發明的另一個較佳具體例中,該菌數比為1:1:1。
依據本發明,該組成物可以是一食品組成物(food composition),例如,呈一食品添加物(food additive)的形式,其可以被添加至一可食性材料(edible material)中以製備一供人類或動物食用的食品產品。依據本發明,該食物產品的種類可包括,但不限於:奶粉(milk powder)、發酵乳(fermented milk)、優格(yogurt)、乳酪(butter)、飲料(beverages)(例如,茶、咖啡)、機能性飲料(functional beverages)、麵製品(flour product)、烘焙食品(baked foods)、甜點(confectionery)、糖果(candies)、發酵食品(fermented foods)、動物飼料(animal feeds)、保健食品(health foods),以及膳食補充品(dietary supplements)。
依據本發明,該組成物可以是一藥學組成物(pharmaceutical composition)。
依據本發明,該藥學組成物可進一步包含有一被廣泛地使用於藥物製造技術之藥學上可接受的載劑(pharmaceutically acceptable carrier)。例如,該藥學上可接受的載劑可包含一或多種選自於下列的試劑:溶劑(solvent)、緩衝液(buffer)、乳化劑(emulsifier)、懸浮劑(suspending agent)、分解劑(decomposer)、崩解劑(disintegrating agent)、分散劑(dispersing agent)、黏結劑(binding agent)、賦形劑(excipient)、安定劑(stabilizing agent)、螯合劑(chelating agent)、稀釋劑(diluent)、膠凝劑(gelling agent)、防腐劑(preservative)、潤濕劑(wetting agent)、潤滑劑(lubricant)、吸收延遲劑(absorption delaying agent)、脂質體(liposome)以及類似之物。有關這些試劑的選用與數量是落在熟習此項技術之人士的專業素養與例行技術範疇內。
依據本發明,該藥學組成物可利用熟習此技藝者所詳知的技術而被製造成一適合於口服投藥(oral administration)或非經腸道投藥(parenteral administration)之劑型(dosage form),這包括,但不限於:注射品(injection)[例如,無菌的水性溶液(sterile aqueous solution)或分散液(dispersion)]、無菌的粉末(sterile powder)、錠劑(tablet)、片劑(troche)、口含錠(lozenge)、丸劑(pellet)、膠囊(capsule)、分散性粉末(dispersible powder)或細顆粒(granule)、溶液、懸浮液(suspension)、乳劑(emulsion)、滴劑(drop)、糖漿(syrup)、酏劑(elixir)、濃漿(slurry)以及類似之物。
本發明亦提供一種用來降低血中尿酸位準的方法,其包括對一有此需要的個體投予植物乳酸桿菌TSP05 (BCRC 910855)。本發明亦提供一種用於治療一具有或被懷疑具有尿酸代謝疾病之個體的方法,其包括對該個體投予植物乳酸桿菌TSP05 (BCRC 910855)。
如本文中所使用的,術語“投予(administering)”以及“投藥”可被交換地使用。
如本文中所使用的,術語“個體(subject)”意指任何感興趣的哺乳類動物,諸如人(humans)、猴子(monkeys)、牛(cows)、綿羊(sheeps)、馬(horses)、豬(pigs)、山羊(goats)、狗(dogs)、貓(cats)、小鼠(mice)以及大鼠(rats)。
依據本發明,植物乳酸桿菌TSP05 (BCRC 910855)的投藥劑量與投藥次數會視下列因素而變化:要被改善的疾病之嚴重性,投藥途徑,以及要被改善的個體之體重、年齡、身體狀況與反應。一般而言,植物乳酸桿菌TSP05 (BCRC 910855)可呈單一劑量或是分成數個劑量的形式而被口服地或非經腸道地投藥。
較佳實施例之詳細說明
本發明將就下面的實施例來做進一步說明,但應瞭解的是,該等實施例僅是供例示說明用,而不應被解釋為本發明的實施上的限制。
實施例 一般實驗材料: 1. 植物乳酸桿菌(
Lactobacillus plantarum) TSP05 (BCRC 910855)、發酵乳酸桿菌(
Lactobacillus fermentum) TSF331 (BCRC 910815)以及羅伊氏乳酸桿菌(
Lactobacillus reuteri) TSR332 (BCRC 910816):
在下面實驗中所使用的這3種乳酸菌菌株皆已被揭露於CN 111543639 A中,並且已被寄存於台灣的食品工業發展研究所(Food Industry Research and Development Institute, FIRDI)的生物資源保存及研究中心(Bioresource Collection and Research Center, BCRC)(300新竹市食品路331號,台灣)。為表清楚,這3種乳酸菌菌株的相關資訊(包括寄存編號以及寄存日期等)已被整合於下面表1中。
表1. 各個乳酸菌菌株的寄存編號與寄存日期
2. 植物乳酸桿菌Lp323以及鼠李糖乳酸桿菌(
Lactobacillus rhamnosus) L-85:
菌株 | 寄存編號 | 寄存日期 |
植物乳酸桿菌TSP05 | BCRC 910855 | 2018/11/9 |
CGMCC No.16710 | 2018/11/5 | |
發酵乳酸桿菌TSF331 | BCRC 910815 | 2018/2/12 |
CGMCC No.15527 | 2018/3/29 | |
羅伊氏乳酸桿菌TSR332 | BCRC 910816 | 2018/2/12 |
CGMCC No.15528 | 2018/3/29 |
在下面實驗中所使用的這2種乳酸菌菌株是申請人從泡菜以及健康人類的腸道中所分離出。
一般實驗方法: 1. 高效能液相層析(high performance liquid chromatography, HPLC)分析:
在下面實驗中,待測樣品所含有的鳥苷(guanosine)、肌苷(inosine)、鳥嘌呤(guanine)、次黃嘌呤(hypoxanthine)以及尿酸(uric acid)的濃度是使用下列HPLC分析儀器來進行測定:液相層析系統(廠牌為Shimadzu Corporation,型號為LC-20A)以及光二極體陣列偵測器(photodiode array detector)(廠牌為HITACHI,型號為L-2455),而有關HPLC的各項操作參數與條件被顯示於下面的表2中。
表2. HPLC的操作參數與條件
分離管柱 | C18管柱 (Cosmosil-5C18-AR) |
管柱規格 | 25 cm × 4.6 mm |
管柱溫度 | 25℃ |
樣品注射體積 | 50 μL |
偵測波長 | 254 nm |
移動相 | 0.1 mM過氯酸鈉(sodium perchlorate, NaClO 4)/0.187 M磷酸(phosphoric acid, H 3PO 4) |
流速(mL/分鐘) | 1.0 |
此外,為供比對,使用不同濃度之鳥苷、肌苷、鳥嘌呤、次黃嘌呤以及尿酸來分別作為校正標準品(control standard)並進行相同的分析,這些化學物質是購自於Sigma。
實施例1. 乳酸菌菌株在活體外降解嘌呤效用(
in vitro purine degradation effect) 上的評估 A、 試驗菌液的製備:
首先,將上面“一般實驗材料”的第1與2項當中所述的5種乳酸菌菌株分別接種至補充有0.05%半胱胺酸(cysteine)的MRS肉湯培養基(MRS broth)(Difco)中,並於37℃下進行培養歷時24小時,俾以活化菌株。接著,將所形成的培養物分別以一為2% (v/v)的接種量接種至MRS肉湯培養基中,並於一厭氧條件下以及37℃下進行培養歷時隔夜。之後,將所形成的培養物以3,000 rpm來進行離心歷時10分鐘,接著去除上澄液,而沉澱物(pellets)以適量的0.1 M磷酸鹽緩衝生理鹽水(phosphate buffered saline, PBS)予以洗滌。接著,使用適量的PBS來予以散浮並將各個乳酸菌菌株調整成具有一為10
9CFU/mL的細菌濃度(以平板計數培養基來進行菌數計數),藉此而分別得到各個乳酸菌菌株的菌液。部分的菌液被拿來作為下面表3所示的單菌實驗組以及單菌比較組1至4的試驗菌液,其餘的菌液則依據表3所示以等體積(1:1或1:1:1)來相互混合以製得複合菌實驗組以及複合菌比較組1至3的試驗菌液。
表3 各組試驗菌液所含有的乳酸菌菌株
註:各組的試驗菌液皆具有相同的細菌濃度(10
9CFU/mL)。
B、 嘌呤降解能力 的測定:
組別 | 植物乳酸桿菌 | 發酵乳酸桿菌 | 羅伊氏乳酸桿菌 | 鼠李糖乳酸桿菌 |
單菌實驗組 | TSP05 | - | - | |
單菌比較組1 | Lp323 | - | - | - |
單菌比較組2 | - | TSF331 | - | - |
單菌比較組3 | - | - | TSR332 | - |
單菌比較組4 | - | - | - | L-85 |
複合菌實驗組 | TSP05 | TSF331 | TSR332 | - |
複合菌比較組1 | - | TSF331 | TSR332 | - |
複合菌比較組2 | Lp323 | TSF331 | TSR332 | - |
複合菌比較組3 | - | TSF331 | TSR332 | L-85 |
對各組試驗菌液分別加入適量的肌苷(廠牌為Sigma,貨號為I4125)以及鳥苷(廠牌為Sigma,貨號為41113),而使肌苷與鳥苷之最終濃度分別為1.26 mM,接著在一厭氧條件下於一恆溫振盪培養箱(37℃、140 rpm)中進行反應歷時30分鐘。
之後,將所得到的各組培養物取900 µL並添加以100 µL的0.1 M過氯酸(perchloric acid, HClO
4)以終止反應,繼而藉由離心來去除菌體並使用0.22 µm的濾膜予以過濾,而由此所得到之各組待測樣品分別依據上面“一般實驗方法”的第1項當中所述的方法來進行HPLC以測定鳥苷與肌苷的濃度。
這2種嘌呤的殘留率分別是將反應後所測得的嘌呤濃度代入下列公式(1)而被計算出:
公式 (1) : A = (1-B/C) × 100其中:A=嘌呤殘留率(%)
B=反應後所測得的嘌呤濃度(mM)
C=反應前的嘌呤濃度(mM)(亦即1.26 mM)
所得到的結果被顯示於下面的表4中。由表4可見,這個實驗結果顯示,與單菌比較組1相較之下,單菌實驗組的肌苷殘留率沒有明顯的差異,而鳥苷殘留率則有顯著地降低,這表示:植物乳酸桿菌TSP05相較於其他的植物乳酸桿菌菌株具有特別優異的鳥苷降解能力。
另外,複合菌比較組1的2種嘌呤殘留率皆介於單菌比較組2與3之間,這表示發酵乳酸桿菌TSF331 (BCRC 910815)與羅伊氏乳酸桿菌TSR332 (BCRC 910816)的組合使用沒有產生協同效應(synergistic effect)。相對地,複合菌實驗組的2種嘌呤殘留率皆顯著地低於複合菌比較組1、單菌實驗組以及單菌比較組2與3所具者,這表示:植物乳酸桿菌TSP05 (BCRC 910855)在與發酵乳酸桿菌TSF331 (BCRC 910815)以及羅伊氏乳酸桿菌TSR332 (BCRC 910816)組合使用下產生了協同效應而大幅提升了整體的嘌呤降解能力。特別地,從複合菌比較組2與複合菌比較組3及其對應組別來看,其他的植物乳酸桿菌菌株或鼠李糖乳酸桿菌菌株則無法透過與發酵乳酸桿菌TSF331 (BCRC 910815)以及羅伊氏乳酸桿菌TSR332 (BCRC 910816)組合使用來展現此效用,反而會對整體的嘌呤降解能力產生負面影響。
表4 各組所測得的嘌呤殘留率
組別 | 嘌呤殘留率(%) | |
鳥苷 | 肌苷 | |
單菌實驗組 | 53 | 44 |
單菌比較組1 | 72 | 37 |
單菌比較組2 | 49 | 41 |
單菌比較組3 | 22 | 10 |
單菌比較組4 | 94 | 96 |
複合菌實驗組 | 0 | 0 |
複合菌比較組1 | 31 | 22 |
複合菌比較組2 | 46 | 28 |
複合菌比較組3 | 58 | 53 |
為了進一步驗證上述結果,將各組的待測樣品分別依據上面“一般實驗方法”的第1項當中所述的方法來進行HPLC以測定鳥嘌呤、次黃嘌呤以及尿酸的濃度。
所得到的結果被顯示於下面的表5中。由表5可見,首先,各組皆無尿酸產生。再者,對照表4的結果可見,鳥苷以及肌苷的殘留量與其代謝產物鳥嘌呤以及次黃嘌呤的生成量大致呈負相關性,亦即表5中各組展現出相對應的嘌呤降解結果,因而亦可觀察到植物乳酸桿菌TSP05 (BCRC 910855)顯著優於其他的植物乳酸桿菌菌株的降解效用,以及植物乳酸桿菌TSP05 (BCRC 910855)與發酵乳酸桿菌TSF331 (BCRC 910815)以及羅伊氏乳酸桿菌TSR332 (BCRC 910816)組合使用所產生的協同效應。
表5 各組所測得的嘌呤代謝產物的生成量
組別 | 嘌呤代謝產物的生成量(mM) | ||
鳥嘌呤 | 次黃嘌呤 | 尿酸 | |
單菌實驗組 | 0.297 | 0.389 | 0 |
單菌比較組1 | 0.149 | 0.577 | 0 |
單菌比較組2 | 0.327 | 0.497 | 0 |
單菌比較組3 | 0.830 | 0.754 | 0 |
單菌比較組4 | 0 | 0 | 0 |
複合菌實驗組 | 1.399 | 1.264 | 0 |
複合菌比較組1 | 0.989 | 1.067 | 0 |
複合菌比較組2 | 0.406 | 0.661 | 0 |
複合菌比較組3 | 0.201 | 0.173 | 0 |
這個實驗結果顯示:植物乳酸桿菌TSP05 (BCRC 910855)具有優異的嘌呤降解能力而被預期可應用於降低食品中的嘌呤含量,並且可進一步與發酵乳酸桿菌TSF331 (BCRC 910815)以及羅伊氏乳酸桿菌TSR332 (BCRC 910816)組合使用來增強此效用。
實施例 2. 本發明的乳酸菌菌株培養物在活體內降低血中尿酸位準 (blood uric acid level) 上的效用評估 實驗個體:
參與本試驗的實驗對象是來自於豐華生物科技股份有限公司(GLAC BIOTECH CO., LTD.)的員工及其親友,本試驗共計有125位年齡介於18歲至65歲且血中尿酸濃度約為7至8 mg/dL的受試者參加,其中包括66位男性與59位女性。
實驗材料:
將上面“一般實驗材料”的第1項當中所述的植物乳酸桿菌TSP05 (BCRC 910855)、發酵乳酸桿菌TSF331 (BCRC 910815)以及羅伊氏乳酸桿菌TSR332 (BCRC 910816)分別接種至MRS肉湯培養基中,並於一厭氧條件下以及37℃下進行培養歷時隔夜。在以平板計數培養基來進行菌數計數之後,進行冷凍乾燥處理,藉此得到各個菌株的菌粉(各自具有一為10
11CFU/g的細菌濃度)。此外,將植物乳酸桿菌TSP05 (BCRC 910855)、發酵乳酸桿菌TSF331 (BCRC 910815)以及羅伊氏乳酸桿菌TSR332 (BCRC 910816)的部分菌粉以1:0.6:0.6的重量比進行混合,藉此而得到含有該3種菌株的複合菌粉(具有10
11CFU/g的細菌濃度)。之後,將各個菌株的菌粉與複合菌粉分別與麥芽糊精(maltodextrin)以一為2:3的重量比來進行混合並製成膠囊,每個膠囊含有2×10
10CFU的菌數。
實驗方法:
首先,將所有的受試者隨機地分成1個TSP05組、1個TSF331組、1個TSR332組、1個複合菌組,以及1個對照組,每組n=25,其中TSP05組、TSF331組、TSR332組以及複合菌組的受試者被口服投藥以含有對應菌粉的膠囊,而對照組的受試者則被口服投藥以等重量的麥芽糊精。各組受試者每天被投藥一顆,投藥時間總共歷時60天。在投藥開始之前以及投藥開始之後的第30天以及60天,藉由易立測尿酸監測系統(廠牌為EasyTouch,型號為ET-301)來測定各組受試者於空腹時的血中尿酸濃度。
尿酸相對位準是藉由將所測得的血中尿酸濃度代入下列公式(2)而被計算出:
公式 (2) : D = E/F × 100其中:D=尿酸相對位準(%)
E=投藥後所測得的血中尿酸濃度(mg/dL)
F=投藥前所測得的血中尿酸濃度(mg/dL)
結果:
圖1顯示在各組受試者的尿酸相對位準隨著時間的變化。從圖1可見,TSP05組、TSF331組、TSR332組以及複合菌組的血中尿酸相對位準皆會隨著時間而呈現出下降的趨勢。特別地,複合菌組的下降情形是顯著優於TSP05組、TSF331組以及TSR332組所具者。這個實驗結果顯示:植物乳酸桿菌TSP05 (BCRC 910855)能夠有效降低血中尿酸,並且可進一步與發酵乳酸桿菌TSF331 (BCRC 910815)以及羅伊氏乳酸桿菌TSR332 (BCRC 910816)組合使用來增強此效用。
綜合以上實驗結果,申請人認為:植物乳酸桿菌TSP05 (BCRC 910855)的單獨使用或者進一步與發酵乳酸桿菌TSF331 (BCRC 910815)以及羅伊氏乳酸桿菌TSR332 (BCRC 910816)組合使用不僅可於體外降低食品中的嘌呤含量來減少其攝入,亦可直接於體內改善尿酸的代謝,而被預期可供用於製備一用來治療和/或預防尿酸代謝疾病(disorder of uric acid metabolism)的產品。
於本說明書中被引述之所有專利和文獻以其整體被併入本案作為參考資料。若有所衝突時,本案詳細說明(包含界定在內)將佔上風。
雖然本發明已參考上述特定的具體例被描述,明顯地在不背離本發明之範圍和精神之下可作出很多的修改和變化。因此意欲的是,本發明僅受如隨文檢附之申請專利範圍所示者之限制。
本發明的上述以及其它目的、特徵與優點,在參照以下的詳細說明與較佳實施例和隨文檢附的圖式後,將變得明顯,其中:
圖1顯示各組受試者的尿酸相對位準隨著時間的變化。
TW中華民國;食品工業發展研究所生物資源保存及研究中心(BCRC of FIRDI);2018/11/9;BCRC 910855。
TW中華民國;食品工業發展研究所生物資源保存及研究中心(BCRC of FIRDI);2018/2/12;BCRC 910815。
TW中華民國;食品工業發展研究所生物資源保存及研究中心(BCRC of FIRDI);2018/2/12;BCRC 910816。
Claims (10)
- 一種用於降低一可食性材料的嘌呤含量之方法,其包括:將一具有嘌呤降解能力的微生物培養於該可食性材料中,其中該微生物是植物乳酸桿菌( Lactobacillus plantarum) TSP05 (BCRC 910855)。
- 如請求項1的方法,其進一步包括同時將發酵乳酸桿菌( Lactobacillus fermentum) TSF331 (BCRC 910815)以及羅伊氏乳酸桿菌( Lactobacillus reuteri) TSR332 (BCRC 910816)培養於該可食性材料中。
- 一種植物乳酸桿菌TSP05 (BCRC 910855)供應用於製備一用來降低血中尿酸位準之組成物的用途。
- 一種植物乳酸桿菌TSP05 (BCRC 910855)供應用於製備一用來治療和/或預防尿酸代謝疾病之組成物的用途。
- 如請求項4的用途,其中該尿酸代謝疾病是選自於由下列所構成的群組:痛風、高尿酸血症、尿酸性腎石病、屢發性急性或慢性的痛風性關節炎、關節畸形、尿酸鹽腎病變,以及它們的組合。
- 如請求項3或4的用途,其中該組成物進一步包含有發酵乳酸桿菌TSF331 (BCRC 910815)以及羅伊氏乳酸桿菌TSR332 (BCRC 910816)。
- 如請求項3或4的用途,其中該組成物是一食品組成物。
- 如請求項3或4的用途,其中該組成物是一藥學組成物。
- 如請求項8的用途,其中該藥學組成物進一步包含有一藥學上可接受的載劑。
- 如請求項8的用途,其中該藥學組成物是呈一供口服投藥的劑型或非經腸道投藥的劑型。
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