JP4139544B2 - Blood sugar level lowering agent - Google Patents

Blood sugar level lowering agent Download PDF

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Publication number
JP4139544B2
JP4139544B2 JP2000060661A JP2000060661A JP4139544B2 JP 4139544 B2 JP4139544 B2 JP 4139544B2 JP 2000060661 A JP2000060661 A JP 2000060661A JP 2000060661 A JP2000060661 A JP 2000060661A JP 4139544 B2 JP4139544 B2 JP 4139544B2
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weight
blood sugar
group
diglyceride
sugar level
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JP2001247457A (en
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孝利 村瀬
智仁 水野
正 長谷
一郎 時光
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Kao Corp
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Kao Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、特定のジグリセリド及び/又はモノグリセリドを含有する油脂からなる血糖値低下剤及びこれを含有する糖尿病予防・改善剤に関する。
【0002】
【従来の技術】
糖尿病は、高血糖、糖尿、体タンパク質の崩壊等による慢性の全身性代謝障害を引き起こし、動脈硬化症とそれに伴う虚血性心疾患、脳血管障害をはじめ、網膜症、腎症、神経障害、感染症、白内障等を併発し、重篤になれば昏睡死に至る疾患である。かかる糖尿病は、食事療法と運動療法とともに血糖値を低下させるためのインスリン、スルホニル尿素系血糖低下剤、ビグアナイド系血糖低下剤、チアゾリジン誘導体、α−グルコシダーゼ阻害剤の投与が有効な治療法として知られている。
【0003】
【発明が解決しようとする課題】
しかし、インスリンは過度の投与による肥満やインスリン抵抗性の増悪が、スルホニル尿素系血糖低下剤では膵臓ランゲルハンス島β細胞の疲弊やインスリン抵抗性による血糖コントロールの不全が、ビグアナイド系血糖低下剤ではブドウ糖を急速に分解して乳酸にする嫌気解糖系を促進するという機序から乳酸アシドーシスが、チアゾリジン誘導体では長期使用による肥満の誘発が、また、α−グルコシダーゼ阻害剤では大腸内での糖の異常発酵による下痢・ガスの貯留などの腸管症状が問題となっている。このため、日常的に用いることができ、かつ副作用の少ない血糖低下剤及び糖尿病予防・改善剤が求められていた。
【0004】
【課題を解決するための手段】
本発明者は、モノグリセリド及びジグリセリドの構成アシル基の種類及びその含量とモノグリセリド及びジグリセリドの血糖値に及ぼす影響との関係について検討した結果、ω3系不飽和脂肪酸を15重量%以上含有するジグリセリド及び/又はモノグリセリドが、血糖値を有効に低下させることができ、血糖値低下剤として有用であること及びかかる血糖値低下剤が糖尿病予防・改善剤として有用であることを見出した。
【0005】
本発明は、構成アシル基中のω3系不飽和アシル基含量が15重量%以上であるジグリセリド及び/又はモノグリセリドを5重量%以上含有する油脂からなる血糖値低下剤を提供する。
本発明はまた、かかる血糖値低下剤を含有する糖尿病予防・改善剤を提供する。
【0006】
【発明の実施の形態】
本発明の血糖値低下剤に用いられるモノグリセリド及びジグリセリドの構成アシル基中のω3系不飽和アシル基含量は、血糖値低下効果の点から15重量%(以下、単に「%」で示す)以上が必要であり、好ましくは20%以上、特に好ましくは25%以上である。ここで上記ω3系不飽和アシル基とは炭素−炭素不飽和結合の位置をω位から特定し、ω位から3番目の炭素原子に最初の不飽和結合が位置するアシル基であって、かつ炭素−炭素不飽和結合を2以上有するものをいう。このうち、炭素−炭素不飽和結合を3〜6有するものが好ましい。ω3系不飽和アシル基の炭素数に特に制限はないが、8〜24が好ましく、16〜22がより好ましい。このうち、炭素数20以上のω3系不飽和アシル基としては、エイコサペンタエノイル基、ドコサペンタエノイル基、ドコサヘキサエノイル基が特に好ましい。また、炭素数20未満のω3系不飽和アシル基としては、α−リノレイル基(all cis-9,12,15−オクタデカトリエノイル基)が特に好ましい。炭素数20以上のω3系不飽和アシル基を有するジグリセリド及び/又はモノグリセリドは、血糖値低下効果以外に、体脂肪低下効果、特に肝臓脂肪低下、肝機能改善効果に優れている。またω3系脂肪酸に基づく抗腫瘍、抗アレルギー効果等が期待できる。炭素数20未満のω3系不飽和アシル基を有するジグリセリド及び/又はモノグリセリドは、血糖値低下効果以外に、体脂肪低下効果を有するが、特に酸化安定性がよく、風味も良好なので、これらが求められる用途に適している。
【0007】
以下、モノグリセリド及びジグリセリドの構成アシル基の好ましい組成を示す。
モノグリセリド及びジグリセリドは、血糖値低下効果の観点から、ω3系不飽和アシル基含量が15%以上であることが必要であり、20〜70%、特に25〜65%であるのが好ましい。
【0008】
モノグリセリド及びジグリセリドの構成アシル基は、更にω6系不飽和アシル基を含有するものであることが好ましい。ここでω6系不飽和アシル基とは、炭素−炭素不飽和結合の位置をω位から特定し、ω位から6番目の炭素原子に最初の不飽和結合が位置するアシル基であって、かつ炭素−炭素不飽和結合を2以上有するものをいう。炭素−炭素不飽和結合数は3〜6が好ましい。ω6系不飽和アシル基を含有すれば、その拮抗作用により、ω3系不飽和アシル基を過剰に摂取した際に生じる溶血、出血等の副作用の発現を抑制し、ω3系不飽和アシル基が有する生理活性の発現を容易にすることができる。ω6系不飽和アシル基としては、リノレイル基(cis,cis-9,12−オクタデカジエノイル基)、γ−リノレノイル基(all cis-8,9,12−オクタデカトリエノイル基、アラキドイル基(all cis-5,8,11,14−エイコサテトラエノイル基)等が挙げられるがリノレイル基が好ましい。ω6系不飽和アシル基の、モノグリセリド及びジグリセリド構成アシル基中の含有量は、上記効果をより顕著とする点から、0.5〜75%が好ましく、0.5〜50%がより好ましく、1〜25%が特に好ましい。
【0009】
不飽和アシル基の量は、全アシル基の55%以上が好ましく、70%以上がより好ましく、90%以上が特に好ましい。
【0010】
本発明の油脂には、上記モノグリセリド及びジグリセリド以外に、トリグリセリドが好ましくは0.1〜95%、より好ましくは0.1〜85%、更に好ましくは0.1〜60%、特に好ましくは0.1〜50%含まれる。トリグリセリドを構成するアシル基の組成も、上記ジグリセリド及びモノグリセリドのアシル基組成と同様であることが好ましい。
【0011】
かかる油脂には、酸化安定性を向上させるために、グリセリド重合物を含有していてもよい。グリセリド重合物は、トリグリセリド、ジグリセリド、モノグリセリドといったグリセリドが、分子間で重合したもので(例えば、化学と生物21巻179頁1983年)、グリセリドの重合度、脂肪酸エステルの位置等に特に制限はない。グリセリド重合物の油脂中の含有量は、油脂組成物の酸化安定性の向上及び風味の観点から、0.1〜10%が好ましく、0.2〜5%がより好ましく、0.3〜4%が特に好ましい。かかるグリセリド重合物は、グリセリド合成時、反応温度条件等を適宜調整することにより、その量を調整できる。グリセリド重合物はゲル濾過クロマトグラフィーカラムを接続したHPLC法により定量できる。また、油脂中の遊離脂肪酸含有量は5%以下が好ましい。
【0012】
かかる油脂は、例えば魚油、シソ油、亜麻仁油、ナタネ油等のω3系不飽和アシル基等を構成アシル基として含有する油脂とグリセリンとのエステル交換反応等により得られたトリグリセリド、ジグリセリド、モノグリセリド等を分画し、次いでこれらを適宜混合することによって製造することができる。
【0013】
本発明の血糖値低下剤に用いられる油脂は、ジグリセリド及び/又はジグリセリドを5%以上含むものであり、好ましくは15%以上、より好ましくは20%以上、更に好ましくは40%以上、特に好ましくは55%以上である。油脂中のジグリセリド及び/又はモノグリセリド含量が5%未満では充分な効果が得られない。
【0014】
本発明の血糖値低下剤は、油脂、又は乳化型もしくは懸濁型の液状物、流動物、半流動物、固形物、顆粒、粉末等の形態で医薬又は食品等として用いることができる。
【0015】
医薬として用いる場合、投与形態としては経口、経腸及び静脈内投与等が挙げられるが、経口投与用医薬が好ましい。具体的には散剤、顆粒剤、カプセル剤、丸剤、錠剤等の固形製剤、懸濁剤、乳剤等の液剤等が挙げられる。これらの経口投与剤は、上記油脂の他、経口投与剤の形態に応じて一般に用いられる、他の油脂成分、賦形剤、崩壊剤、結合剤、滑沢剤、界面活性剤、アルコール類、水、水溶性高分子、甘味料、矯味剤、酸味料等を添加し、常法に従って製造することができる。上記油脂の経口投与用医薬製剤への配合量は、一般に0.1〜100%、特に1〜80%が好ましい。また、投与量は、上記ジグリセリド及び/又はモノグリセリドとして、1日当たり0.1〜5gを、1〜数回に分けて投与することが好ましい。
【0016】
食品としては、健康食品、機能性食品、特定保健用食品等が挙げられる。かかる食品は、上記油脂の他に、食品の種類に応じて一般に用いられる食品原料を添加し、常法にしたがって製造することができる。上記油脂の食品への配合量は、食品の種類によっても異なるが、一般に0.1〜100%、特に1〜80%が好ましい。
【0017】
本発明の血糖値低下剤は、糖尿病、膵組織の器質的障害、慢性肝疾患、インスリン抵抗性ホルモン優勢を伴う内分泌疾患、脳圧亢進状態、肥満症、過食、アルコール過飲、胃切除後の食餌、発熱性疾患、一酸化炭素中毒、薬剤投与等を原因とする高血糖症状に対して有効である。
【0018】
本発明の糖尿病予防・改善剤は、上記血糖値低下剤を含有するものである。本発明の糖尿病予防・改善剤は、上記血糖値低下剤以外に糖尿病予防・改善に有効な公知成分、例えばインスリン、スルホニル尿素系血糖低下剤、ビグアナイド系血糖低下剤、チアゾリジン誘導体、α−グルコシダーゼ阻害剤等を配合してもよい。本発明の糖尿病予防・改善剤は、油脂、又は乳化型もしくは懸濁型の液状物、流動物、半流動物、固形物、顆粒、粉末等の形態で医薬又は食品等として用いることができる。医薬として用いる場合、経口用の形態とすることが好ましい。本発明の糖尿病予防・改善剤は、上記血糖値低下剤以外に、医薬、食品に一般に用いられる原料を添加し、常法に従って製造することができる。
【0019】
本発明の糖尿病予防・改善剤の投与量は、糖尿病の予防・改善に有効であれば特に制限はなく、これを1日に1〜数回に分けて投与することができる。
【0020】
【実施例】
製造例1
魚油(花王(株)製)200重量部とグリセリン(和光純薬工業(株)製)8重量部とを混合し、アルカリ触媒(ナトリウムメトキサイドCHONa)0.6重量部を混合し、減圧下(0.133kPa)100℃で4時間エステル交換反応を行う。得られた反応生成物を、シリカゲルカラムクロマトグラフィーで分画し、次いでトリグリセリド56.1重量部、ジグリセリド42.9重量部、モノグリセリド1.0重量部を混合して油脂1を製造する。
【0021】
製造例2
DHA高含有油(マルハ(株)製「DHA−45」)200重量部とグリセリン10重量部を混合し、製造例1と同様にしてエステル交換反応、各成分の分画を行う。次いでトリグリセリド10.3重量部、ジグリセリド87.4重量部、モノグリセリド1.9重量部及びグリセリド重合物0.4重量部を混合して油脂2を製造する。
【0022】
製造例3
亜麻仁油(「スキャンオイル」、輸入元:日本商事(株))180重量部とグリセリン12重量部を混合し、製造例1と同様にしてエステル交換反応、各成分分画を行う。次いで、トリグリセリド36.8重量部、ジグリセリド61.3重量部、モノグリセリド0.5重量部、遊離脂肪酸0.8重量部、グリセリド重合物0.6重量部を混合して油脂3を製造する。
【0023】
製造例4
エゴマ油(太田油脂(株)製)180重量部とグリセリン15重量部を混合し、製造例1と同様にしてエステル交換反応、各成分の分画を行う。次いでトリグリセリド13.3重量部、ジグリセリド24.1重量部、モノグリセリド58.3重量部、遊離脂肪酸3.1重量部及びグリセリド重合物1.2重量部を混合して油脂4を製造する。
【0024】
製造例5
エゴマ油140重量部、オリーブ油(和光純薬工業(株)製)70重量部及びグリセリン20重量部を混合し、製造例1と同様にしてエステル交換反応、各成分の分画を行う。次いでモノグリセリド100%画分を油脂5とする。
【0025】
製造例1〜5で得られた各油脂由来のモノグリセリド及びジグリセリド画分の主要脂肪酸組成を表1に示す。
【0026】
【表1】

Figure 0004139544
【0027】
試験例1
食餌誘導性II型糖尿病モデルであるC57BL/6J系マウスを使用した血糖値低下効果の確認
7週齢のC57BL/6J系雄性マウスを各群5匹ずつ3群に分け、表2記載の組成の各食餌で飼育する。30日後、エーテル麻酔下で腹部大動脈より採血を行い血糖値をグルコーステストワコー(和光純薬製)にて測定する。結果を図1に示す。
【0028】
【表2】
Figure 0004139544
【0029】
第2群(高脂質負荷食(TG30%食餌)群)では、第1群(通常食(TG5%食餌)群)に比較し、有意な血糖値の上昇が認められたのに対して、第3群(油脂2配合群)においては、第1群に対して血糖値の上昇は少なく、また第2群に対して血糖値は低値を示した。これにより、本発明の血糖値低下剤は、血糖値低下に有効であること、更に糖尿病の予防・改善に有効であることが確認された。
【0030】
試験例2
遺伝性糖尿病モデルであるC57BL/KsJ−db/dbマウスを使用した血糖値低下効果の確認
7週齢のC57BL/KsJ−db/db雄性マウスを各群10匹ずつ3群に分け、表3記載の組成の各食餌で飼育する。2ケ月後、エーテル麻酔下で腹部大動脈より採血を行い血糖値をグルコーステストワコー(和光純薬製)にて測定する。結果を図2に示す。
【0031】
【表3】
Figure 0004139544
【0032】
第1群(通常食(TG10%食餌)群)では著しい高血糖状態が認められたのに対して、脂質をαリノレン酸ジグリセリド(油脂3:3%)又はαリノレン酸ジグリセリド/モノグリセリド(油脂3:3%+油脂5:1%)に置換した第2群及び第3群においては、血糖の有意な低下を認めた。これにより、本発明の血糖値低下剤は、血糖値低下に有効であること、更に糖尿病の予防・改善に有効であることが確認された。
【0033】
試験例3
空腹時血糖値が120mg/dl以上である男性3名(A,B,C)に、食生活を変えることなく、ソフトカプセルに充填した油脂2を1日2g、3カ月間摂取させ、その後血糖値をグルコーステストワコー(和光純薬製)により測定する。結果を表4に示す。その結果、全員に血糖値の低下が認められた。これにより、本発明の血糖値低下剤は、血糖値低下に有効であること、更に糖尿病の予防・改善に有効であることが確認された。
【0034】
【表4】
Figure 0004139544
【0035】
実施例1
表5に示す配合で、常法に従って経口シロップ剤を製造する。
【0036】
【表5】
Figure 0004139544
【0037】
【発明の効果】
本発明の血糖値低下剤は、種々の原因による高血糖症状に対して有効に作用し、その血糖値を低下させることができる。また、本発明の糖尿病予防・改善剤を用いれば、有効に糖尿病を予防、改善することができる。
【図面の簡単な説明】
【図1】本発明の血糖値低下剤の、食餌誘導性糖尿病モデルC57BL/6Jマウスに対する血糖値低下効果を示す図である。
【図2】本発明の血糖値低下剤の、遺伝性糖尿病モデルC57BL/KsJ−db/dbマウスに対する血糖値低下効果を示す図である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a blood glucose level-lowering agent comprising an oil or fat containing a specific diglyceride and / or monoglyceride, and a diabetes preventive / ameliorating agent containing the same.
[0002]
[Prior art]
Diabetes causes chronic systemic metabolic disorders due to hyperglycemia, diabetes, body protein breakdown, etc., including arteriosclerosis and accompanying ischemic heart disease, cerebrovascular disorder, retinopathy, nephropathy, neuropathy, infection This is a disease that causes comatose and cataracts and leads to coma death if severe. Such diabetes is known as an effective treatment with the administration of insulin, sulfonylurea hypoglycemic agent, biguanide hypoglycemic agent, thiazolidine derivative, and α-glucosidase inhibitor for lowering blood glucose level together with diet therapy and exercise therapy. ing.
[0003]
[Problems to be solved by the invention]
However, insulin causes obesity and exacerbation of insulin resistance due to excessive administration, sulfonylurea hypoglycemic agents cause pancreatic islets of Langerhans β cells to become exhausted and impaired blood glucose control due to insulin resistance, and biguanide hypoglycemic agents use glucose. Lactic acidosis is a mechanism that promotes an anaerobic glycolysis system that rapidly degrades to lactic acid, and thiazolidine derivatives induce obesity by long-term use, and α-glucosidase inhibitors cause abnormal fermentation of sugar in the large intestine. Intestinal symptoms such as diarrhea and gas accumulation due to illness have become problems. For this reason, a hypoglycemic agent and a diabetes preventive / ameliorating agent that can be used on a daily basis and has few side effects have been demanded.
[0004]
[Means for Solving the Problems]
As a result of studying the relationship between the type and content of constituent acyl groups of monoglyceride and diglyceride and the effect of monoglyceride and diglyceride on blood glucose level, the present inventor has found that diglyceride containing 15% by weight or more of ω3 unsaturated fatty acid and / or Alternatively, it has been found that monoglycerides can effectively lower blood sugar levels, are useful as blood sugar lowering agents, and such blood sugar lowering agents are useful as diabetes preventive / ameliorating agents.
[0005]
The present invention provides a blood sugar level-lowering agent comprising an oil containing 5% by weight or more of diglyceride and / or monoglyceride having a ω3 unsaturated acyl group content of 15% by weight or more in the constituent acyl group.
The present invention also provides a preventive / ameliorating agent for diabetes containing such a blood glucose level-lowering agent.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The ω3-unsaturated acyl group content in the constituent acyl groups of the monoglyceride and diglyceride used in the blood sugar level lowering agent of the present invention is 15% by weight (hereinafter simply referred to as “%”) or more in view of the blood sugar level lowering effect. Necessary, preferably 20% or more, particularly preferably 25% or more. Here, the ω3 unsaturated acyl group is an acyl group in which the position of the carbon-carbon unsaturated bond is specified from the ω position, and the first unsaturated bond is located at the third carbon atom from the ω position, and What has two or more carbon-carbon unsaturated bonds is said. Among these, what has 3-6 carbon-carbon unsaturated bonds is preferable. Although there is no restriction | limiting in particular in carbon number of a omega-3 unsaturated acyl group, 8-24 are preferable and 16-22 are more preferable. Among these, as the ω3 unsaturated acyl group having 20 or more carbon atoms, an eicosapentaenoyl group, a docosapentaenoyl group, and a docosahexaenoyl group are particularly preferable. As the ω3 unsaturated acyl group having less than 20 carbon atoms, an α-linoleyl group (all cis-9,12,15-octadecatrienoyl group) is particularly preferable. A diglyceride and / or monoglyceride having an ω3-unsaturated acyl group having 20 or more carbon atoms is excellent in a body fat lowering effect, particularly a liver fat lowering and liver function improving effect in addition to a blood sugar level lowering effect. Further, antitumor and antiallergic effects based on ω3 fatty acids can be expected. Diglycerides and / or monoglycerides having an ω3-unsaturated acyl group with less than 20 carbon atoms have a body fat lowering effect in addition to a blood sugar level lowering effect, but they are particularly desirable because they have good oxidation stability and good flavor. Suitable for the intended use.
[0007]
Hereinafter, preferred compositions of the constituent acyl groups of monoglyceride and diglyceride are shown.
Monoglyceride and diglyceride are required to have an ω3-unsaturated acyl group content of 15% or more, and preferably 20 to 70%, particularly 25 to 65%, from the viewpoint of blood glucose level lowering effect.
[0008]
The constituent acyl group of monoglyceride and diglyceride preferably further contains an ω6 unsaturated acyl group. Here, the ω6 unsaturated acyl group is an acyl group in which the position of the carbon-carbon unsaturated bond is specified from the ω position, and the first unsaturated bond is located at the sixth carbon atom from the ω position, What has two or more carbon-carbon unsaturated bonds is said. The number of carbon-carbon unsaturated bonds is preferably 3-6. If it contains an ω6 unsaturated acyl group, its antagonistic action suppresses the expression of side effects such as hemolysis and hemorrhage that occur when the ω3 unsaturated acyl group is excessively ingested, and the ω3 unsaturated acyl group has The expression of physiological activity can be facilitated. Examples of the ω6 unsaturated acyl group include a linoleyl group (cis, cis-9,12-octadecadienoyl group), a γ-linolenoyl group (all cis-8,9,12-octadecatrienoyl group, arachidoyl group ( all cis-5,8,11,14-eicosatetraenoyl group), etc., but a linoleyl group is preferable.The content of the ω6 unsaturated acyl group in the monoglyceride and diglyceride constituting acyl groups is effective for the above effect. From the point of making it more remarkable, 0.5 to 75% is preferable, 0.5 to 50% is more preferable, and 1 to 25% is particularly preferable.
[0009]
The amount of unsaturated acyl groups is preferably 55% or more, more preferably 70% or more, and particularly preferably 90% or more of the total acyl groups.
[0010]
In addition to the monoglycerides and diglycerides, triglycerides are preferably 0.1 to 95%, more preferably 0.1 to 85%, still more preferably 0.1 to 60%, and particularly preferably 0. 1-50% is included. The composition of the acyl group constituting the triglyceride is also preferably the same as the acyl group composition of the diglyceride and monoglyceride.
[0011]
Such fats and oils may contain a glyceride polymer in order to improve oxidation stability. The glyceride polymer is a polymer in which glycerides such as triglyceride, diglyceride and monoglyceride are polymerized between molecules (for example, Chemistry and Biology, Vol. 21, page 179, 1983), and there is no particular limitation on the degree of polymerization of glyceride, the position of fatty acid ester, etc. . The content of the glyceride polymer in the oil and fat is preferably 0.1 to 10%, more preferably 0.2 to 5%, and more preferably 0.3 to 4 from the viewpoint of improving the oxidative stability and flavor of the oil and fat composition. % Is particularly preferred. The amount of the glyceride polymer can be adjusted by appropriately adjusting the reaction temperature conditions and the like at the time of glyceride synthesis. The glyceride polymer can be quantified by an HPLC method connected to a gel filtration chromatography column. Further, the content of free fatty acid in the fat is preferably 5% or less.
[0012]
Such fats and oils include, for example, triglycerides, diglycerides, monoglycerides and the like obtained by transesterification of fats and oils containing ω3-unsaturated acyl groups such as fish oil, perilla oil, linseed oil, rapeseed oil and the like as constituent acyl groups. Can be fractionated and then mixed as appropriate.
[0013]
The fats and oils used in the blood sugar level-lowering agent of the present invention contain 5% or more of diglyceride and / or diglyceride, preferably 15% or more, more preferably 20% or more, still more preferably 40% or more, particularly preferably. 55% or more. If the diglyceride and / or monoglyceride content in the fat is less than 5%, a sufficient effect cannot be obtained.
[0014]
The blood sugar level-lowering agent of the present invention can be used as a medicine or food in the form of oils and fats, or an emulsified or suspended liquid, fluid, semi-fluid, solid, granule, powder or the like.
[0015]
When used as a medicine, examples of the dosage form include oral, enteral and intravenous administration, and a medicine for oral administration is preferred. Specific examples thereof include powders, granules, capsules, pills, solid preparations such as tablets, suspensions, liquids such as emulsions, and the like. These oral administration agents are other oils and fat components, excipients, disintegrants, binders, lubricants, surfactants, alcohols, which are generally used according to the form of the oral administration in addition to the above oils and fats. Water, a water-soluble polymer, a sweetener, a corrigent, a sour agent, and the like can be added and produced according to a conventional method. The blending amount of the oil into a pharmaceutical preparation for oral administration is generally 0.1 to 100%, particularly preferably 1 to 80%. The dosage is preferably 0.1 to 5 g per day as the diglyceride and / or monoglyceride, divided into 1 to several times.
[0016]
Examples of food include health food, functional food, food for specified health use, and the like. In addition to the above fats and oils, such foods can be produced according to conventional methods by adding commonly used food materials according to the type of food. The blending amount of the fats and oils in the food varies depending on the kind of the food, but is generally 0.1 to 100%, particularly preferably 1 to 80%.
[0017]
The blood glucose level-lowering agent of the present invention includes diabetes, organic disorder of pancreatic tissue, chronic liver disease, endocrine disease with insulin resistance hormone predominance, increased brain pressure, obesity, overeating, alcohol overdose, after gastrectomy. It is effective against hyperglycemic symptoms caused by diet, febrile illness, carbon monoxide poisoning, drug administration, and the like.
[0018]
The diabetes preventive / ameliorating agent of the present invention contains the blood sugar level-lowering agent. Diabetes preventive / ameliorating agent of the present invention is a known component effective for diabetes prevention / amelioration other than the above-mentioned blood sugar level lowering agent, such as insulin, sulfonylurea blood sugar lowering agent, biguanide blood sugar lowering agent, thiazolidine derivative, α-glucosidase inhibitor You may mix | blend an agent etc. The diabetes preventive / ameliorating agent of the present invention can be used as a medicine or food in the form of oils and fats, or an emulsified or suspended liquid, fluid, semi-fluid, solid, granule, powder or the like. When used as a medicine, it is preferably in an oral form. The diabetes preventive / ameliorating agent of the present invention can be produced according to a conventional method by adding raw materials generally used for pharmaceuticals and foods in addition to the above-mentioned blood sugar level-lowering agent.
[0019]
The dosage of the diabetes preventive / ameliorating agent of the present invention is not particularly limited as long as it is effective for the prevention / amelioration of diabetes, and can be administered in one to several times a day.
[0020]
【Example】
Production Example 1
200 parts by weight of fish oil (manufactured by Kao Corporation) and 8 parts by weight of glycerin (manufactured by Wako Pure Chemical Industries, Ltd.) are mixed, and 0.6 part by weight of an alkali catalyst (sodium methoxide CH 3 ONa) is mixed. The transesterification is carried out at 100 ° C. under reduced pressure (0.133 kPa) for 4 hours. The obtained reaction product is fractionated by silica gel column chromatography, and then 56.1 parts by weight of triglyceride, 42.9 parts by weight of diglyceride and 1.0 part by weight of monoglyceride are mixed to produce fat 1.
[0021]
Production Example 2
200 parts by weight of DHA-rich oil (“DHA-45” manufactured by Maruha Co., Ltd.) and 10 parts by weight of glycerin are mixed and subjected to transesterification and fractionation of each component in the same manner as in Production Example 1. Next, 10.3 parts by weight of triglyceride, 87.4 parts by weight of diglyceride, 1.9 parts by weight of monoglyceride, and 0.4 part by weight of glyceride polymer are mixed to produce fat 2.
[0022]
Production Example 3
Linseed oil (“scan oil”, import source: Nippon Shoji Co., Ltd.) (180 parts by weight) and glycerin (12 parts by weight) are mixed and subjected to transesterification and fractionation in the same manner as in Production Example 1. Then, 36.8 parts by weight of triglyceride, 61.3 parts by weight of diglyceride, 0.5 part by weight of monoglyceride, 0.8 part by weight of free fatty acid and 0.6 part by weight of glyceride polymer are mixed to produce fat 3.
[0023]
Production Example 4
180 parts by weight of sesame oil (manufactured by Ota Oil Co., Ltd.) and 15 parts by weight of glycerin are mixed and subjected to transesterification and fractionation of each component in the same manner as in Production Example 1. Next, 13.3 parts by weight of triglyceride, 24.1 parts by weight of diglyceride, 58.3 parts by weight of monoglyceride, 3.1 parts by weight of free fatty acid and 1.2 parts by weight of glyceride polymer are mixed to produce fat 4.
[0024]
Production Example 5
140 parts by weight of sesame oil, 70 parts by weight of olive oil (manufactured by Wako Pure Chemical Industries, Ltd.) and 20 parts by weight of glycerin are mixed and subjected to transesterification and fractionation of each component in the same manner as in Production Example 1. Next, the 100% monoglyceride fraction is designated as oil 5.
[0025]
Table 1 shows the main fatty acid composition of the monoglyceride and diglyceride fractions derived from each oil and fat obtained in Production Examples 1 to 5.
[0026]
[Table 1]
Figure 0004139544
[0027]
Test example 1
Confirmation of blood glucose level-lowering effect using C57BL / 6J mice, which are diet-induced type II diabetes models Seven-week old C57BL / 6J male mice were divided into 3 groups of 5 mice each. Breed on each diet. After 30 days, blood was collected from the abdominal aorta under ether anesthesia, and the blood glucose level was measured with Glucose Test Wako (manufactured by Wako Pure Chemical Industries). The results are shown in FIG.
[0028]
[Table 2]
Figure 0004139544
[0029]
In the second group (high lipid-loaded diet (TG 30% diet) group), a significant increase in blood glucose level was observed compared to the first group (normal diet (TG 5% diet) group). In group 3 (oil and fat 2 combination group), the blood glucose level increased less than the first group, and the blood glucose level was lower than that of the second group. As a result, it was confirmed that the blood sugar level-lowering agent of the present invention is effective in lowering blood sugar level and further effective in preventing and improving diabetes.
[0030]
Test example 2
Confirmation of blood glucose level-lowering effect using C57BL / KsJ-db / db mice, which are hereditary diabetes models 7-week-old C57BL / KsJ-db / db male mice are divided into 3 groups of 10 mice each. Breed on each diet of composition. Two months later, blood was collected from the abdominal aorta under ether anesthesia and the blood glucose level was measured with Glucose Test Wako (manufactured by Wako Pure Chemical Industries). The results are shown in FIG.
[0031]
[Table 3]
Figure 0004139544
[0032]
In the first group (normal diet (TG 10% diet) group), a markedly hyperglycemic state was observed, whereas the lipid was α-linolenic acid diglyceride (oil 3: 3%) or α-linolenic acid diglyceride / monoglyceride (oil 3 : 3% + oil and fat 5: 1%), a significant decrease in blood glucose was observed in the second group and the third group. As a result, it was confirmed that the blood sugar level-lowering agent of the present invention is effective in lowering blood sugar level and further effective in preventing and improving diabetes.
[0033]
Test example 3
Three males (A, B, C) with fasting blood glucose levels of 120 mg / dl or higher were allowed to take 2 g of oil 2 filled in soft capsules for 2 months a day without changing their diet. Is measured with Glucose Test Wako (manufactured by Wako Pure Chemical Industries, Ltd.). The results are shown in Table 4. As a result, all had a decrease in blood glucose level. As a result, it was confirmed that the blood sugar level-lowering agent of the present invention is effective in lowering blood sugar level and further effective in preventing and improving diabetes.
[0034]
[Table 4]
Figure 0004139544
[0035]
Example 1
An oral syrup is produced according to a conventional method with the formulation shown in Table 5.
[0036]
[Table 5]
Figure 0004139544
[0037]
【The invention's effect】
The blood sugar level-lowering agent of the present invention effectively acts on hyperglycemic symptoms due to various causes, and can lower the blood sugar level. Moreover, diabetes can be effectively prevented and improved by using the diabetes preventive / ameliorating agent of the present invention.
[Brief description of the drawings]
FIG. 1 is a graph showing the blood glucose level-lowering effect of a blood glucose level-lowering agent of the present invention on diet-induced diabetes model C57BL / 6J mice.
FIG. 2 is a graph showing the blood glucose level-lowering effect of the blood glucose level-lowering agent of the present invention on hereditary diabetes model C57BL / KsJ-db / db mice.

Claims (1)

構成アシル基中に炭素数16〜18のω3系不飽和アシル基を有し、当該ω3系不飽和アシル基含量が15重量%以上であるジグリセリド及び/又はモノグリセリドを5重量%以上含有する油脂からなる血糖値低下剤。 From fats and oils having 5 to 10% by weight of diglycerides and / or monoglycerides having an ω3 unsaturated acyl group having 16 to 18 carbon atoms in the constituent acyl group and the ω3 unsaturated acyl group content being 15% by weight or more A blood sugar level lowering agent.
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