JP3816545B2 - Composition for treatment of cutaneous pruritus and composition for treatment of hyperparathyroidism in an artificial dialysis patient - Google Patents

Composition for treatment of cutaneous pruritus and composition for treatment of hyperparathyroidism in an artificial dialysis patient Download PDF

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JP3816545B2
JP3816545B2 JP07707094A JP7707094A JP3816545B2 JP 3816545 B2 JP3816545 B2 JP 3816545B2 JP 07707094 A JP07707094 A JP 07707094A JP 7707094 A JP7707094 A JP 7707094A JP 3816545 B2 JP3816545 B2 JP 3816545B2
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composition
treatment
hyperparathyroidism
linolenic acid
pruritus
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JPH07233062A (en
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史和 川岸
恵子 山田
博 井口
功 森
久義 枠熊
賢一 八尋
浩樹 後藤
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Idemitsu Kosan Co Ltd
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Idemitsu Kosan Co Ltd
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Description

【0001】
【産業上の利用分野】
本発明は、人工透析患者の皮膚そう痒症治療組成物及び副甲状腺機能亢進症治療組成物に関し、詳しくは、γ−リノレン酸及びジホモ−γ−リノレン酸又はその誘導体を含有する人工透析患者の皮膚そう痒症治療組成物及び副甲状腺機能亢進症治療組成物に関する。
【0002】
【従来の技術】
近年の透析療法の発達により、今や慢性腎不全が直接死因となることは少なくなり、適切な治療法を選択することによって20年以上の長期生存が可能になった。これに伴って、患者の Quality of life (以下、QOLという)を保つ(普通の生活を続け、身体的に傷害されず、精神的に保たれ、社会的に阻害されず、全てに積極的に安定を得る)ことが非常に重要になってきている。したがって、今日では長期生存に伴う合併症の対策や、早期の社会復帰のための適切な治療法が模索されている。
【0003】
長期人工透析患者の合併症の一つとして、患者の80%以上が悩まされている皮膚そう痒症が問題となっている。そう痒のため安眠できない症例も少なくなく、ほぼ全例で乾皮症が認められている。このように、そう痒症は、多くの人工透析患者を悩ませているにもかかわらず、発症機構は不明であり、効果的な治療法が確立されていないのが現状である。
【0004】
現在、そう痒症の原因として、副甲状腺機能亢進、亜鉛等の微量元素不足、尿毒症性物質の存在、皮膚の脆弱化、肥満細胞増加に伴うヒスタミン遊離促進などが考えられており、治療もこれらに対して、ビタミンD剤の投与、微量元素の補充、抗ヒスタミン・抗アレルギー剤の投与、その他尿素含有軟膏、ヨモギエキスローションの外用などが行われている。
【0005】
しかし、いずれの方法も必ずしも満足な治療効果は示さない。したがって、人工透析患者のそう痒症に対し、治療効果を十分に有し、かつ副作用の問題のない治療薬の開発が強く望まれている。
【0006】
一方、慢性腎不全では、腎疾患の種類に関わりなくネフロンの数の減少がみられ、さらに症状が進行すると腎機能が廃絶し透析に移行する。ネフロン数の減少により腎機能が低下すると、血清Caの低下、活性型ビタミンD産生減少、副甲状腺ホルモン(Parathyroid hormone:以下、PTHという)分泌抑制の血清Ca set pointの上昇、副甲状腺活性型ビタミンD受容体数の減少、リン代謝異常などが起こり、これらはPTH過剰分泌の要因となり、二次性副甲状腺機能亢進症を発症する。
【0007】
PTHは、カルシウムとリンの代謝調節に必須のもので、骨の維持に大きな影響を与えており、過剰な分泌は骨に作用して線維性骨炎を起こす。また、PTHは貧血、組織潰瘍、中枢神経症状、痒感、高脂血症などを生じる尿毒症物質の一つともいわれており、透析患者にとって重要な合併症である腎性骨異栄養症発症の大きな因子であり、この症例には一度起こすと治療困難なものが多く、透析患者のQOLを著しく阻害することになる。
【0008】
また、二次性副甲状腺機能亢進症は、軽度の腎機能低下の頃からすでに存在するといわれ、長期透析例では合併頻度も程度も強くなることから、早期から予防していくことが肝要である。
【0009】
二次性副甲状腺機能亢進症の治療としては、例えば低カルシウム血症や活性型ビタミンD産生減少に対しては、活性型ビタミンD剤の使用が行われているが、高カルシウム血症や異所性石灰化を起こしやすいといった副作用がある。次に、活性型ビタミンD剤に対し抵抗性を有する場合に用いられるパルス療法においても、これら不都合に加えて低回転骨症などの問題もある。また、PTH分泌抑制の血清Ca set point を下げるために、活性型ビタミンD剤やカルシウム剤が用いられるが、やはり同様の難点がある。一方、リン代謝異常による高リン血症では、水酸化アルミニウムが透析患者では禁忌薬剤となったため、これに代わって炭酸カルシウムや酢酸カルシウム剤が使用されている。しかし、カルシウム製剤はリン吸着能が弱いため大量投与を必要とし、高Ca血症をきたす危険性が大きい。さらに、リン制限に伴って低タンパク食療法も行われているが、低タンパク食による栄養障害や異化亢進作用といった悪影響がある。さらに、外科的処置として副甲状腺摘出術も行われるが、患者にとって大きな精神的、肉体的負担となる。
【0010】
このように、副甲状腺機能亢進症に対して行われている治療法は、いずれも難点があり、特に長期透析患者の場合にはこれらを組み合わせても満足な治療効果が得られていないのが実状である。
【0011】
【発明が解決しようとする課題】
本発明は、上記観点からなされたものであり、十分な効果を有し、かつ安全性の高い人工透析患者の皮膚そう痒症治療組成物及び副甲状腺機能亢進症治療組成物を提供することを課題とする。
【0012】
【課題を解決するための手段】
本発明者は、上記課題を解決するために鋭意研究を重ねた結果、ω6系不飽和脂肪酸が、人工透析患者のそう痒症に有効であり、さらに、副甲状腺機能亢進症により過剰分泌されるPTHを有意に低下させることを見出し、本願発明を完成するに至った。
【0013】
すなわち本願発明は、γ−リノレン酸、ジホモ−γ−リノレン酸及びこれらの誘導体から選ばれる1種又は2種以上を含有する人工透析患者の皮膚そう痒症治療組成物である。さらに本願発明は、γ−リノレン酸、ジホモ−γ−リノレン酸及びこれらの誘導体から選ばれる1種又は2種以上を含有する人工透析患者の副甲状腺機能亢進症治療組成物を提供する。
【0014】
以下、本発明を詳細に説明する。
本発明の治療組成物は、γ−リノレン酸、ジホモ−γ−リノレン酸及びこれらの誘導体(以下、「γ−リノレン酸等」ということがある)から選ばれる1種又は2種以上を含有し、人工透析患者の皮膚そう痒症及び副甲状腺機能亢進症に対し、治療効果を有するものである。γ−リノレン酸、ジホモ−γ−リノレン酸等のω6系不飽和脂肪酸は必須脂肪酸であり、これらやその誘導体は種々の生理活性を有することが知られているが、これらが人工透析患者の皮膚そう痒症や副甲状腺機能亢進症に対して有効であるということは全く知られておらず、本発明者らによってはじめて見出された。
【0015】
上記γ−リノレン酸等は、ムコール(Mucor)属、モルティエレラ(Mortierella)属、リゾプス(Rizopus)属等の糸状菌類、あるいは月見草、ボレージ等の植物、さらにはスピルリナ等の藻類等に含まれる油脂から得られるが、これらからの抽出物をそのまま用いてもよく、精製したものを用いてもよい。また、γ−リノレン酸等は、化学合成によって得ることもでき、市販されているものを使用してもよい。尚、γ−リノレン酸等は必須脂肪酸であり、食用に用いられており、安全性には特に問題はない。
【0016】
上記γ−リノレン酸あるいはジホモ−γ−リノレン酸の誘導体としては、これらと各種アルコール類との反応により得られるエステル、例えばエチルエステル、グリセロールエステル、リン脂質等、あるいは無機、有機の塩基とを等モル比で作用して得られる塩、例えばナトリウム塩、カリウム塩等が挙げられる。
【0017】
本発明の人工透析患者のそう痒症治療組成物及び副甲状腺機能亢進症治療組成物の剤型は特に限定されないが、γ−リノレン酸、ジホモ−γ−リノレン酸及びこれらの誘導体から選ばれる1種又は2種以上の混合物、あるいは上記糸状菌類や植物等の油脂から得られる抽出物を、一般に製剤上許容される無害の1種、或は数種のベヒクル、坦体、賦形剤、統合剤、防腐剤、安定剤、香味剤等と共に混和して、錠剤、顆粒剤、カプセル剤、水剤等の内服剤;坐剤;膣剤;軟膏剤、クリーム、ローション等の外用剤;無菌溶液剤、懸濁液剤等の注射剤とすることができる。これらは、従来公知の技術を用いて製造することができる。
【0018】
例えば、上記γ−リノレン酸等の1種あるいは2種以上とコーンスターチ、ゼラチン等の結合剤、微晶性セルロース等の賦形剤、馬鈴薯デンプン、アルギン酸ナトリウム等の膨化剤、乳糖、ショ糖等の甘味剤等を配剤して散剤、錠剤、丸剤、顆粒剤とすることができる。また、カプセル剤は常法に従い、γ−リノレン酸等と他の油脂類との混合物を軟質ゼラチンカプセル、硬質ゼラチンカプセル等に充填して調製される。さらに、常法によりシクロデキストリンとγ−リノレン酸等とのシクロデキストリン包接物とすることもできる。外用剤とする場合には、基剤としてワセリン、パラフィン、油脂類、ラノリン等が使用される。
【0019】
また、上記γ−リノレン酸等には、α−リノレン酸、エイコサペンタエン酸やドコサヘキサエン酸などのω3系の不飽和脂肪酸、ミリストオレイン酸などのω5系の不飽和脂肪酸、パルミトオレイン酸などのω7系の不飽和脂肪酸、オレイン酸、エルシン酸などのω9系の不飽和脂肪酸、ラウリン酸、ミリスチン酸などの飽和脂肪酸を任意の割合で添加してもよい。また、γ−リノレン酸等の酸化を防止するために、ビタミンE、アスコルビルパルミテート、アスコルビルステアレート等の抗酸化剤を添加してもよい。
【0020】
投与量に関しては、γ−リノレン酸もしくはジホモ−γ−リノレン酸またはこれらの誘導体の量として特に制限はないが、投与量が多くなりすぎると軟便になりやすい傾向がある。患者の年齢、病歴、疾患の種類、症状等により投与量を適宜設定すればよい。皮膚そう痒症の治療又は副甲状腺機能亢進症の治療においては、50〜600mg/日の範囲、好ましくは100〜450mg/日の範囲で用いることにより、所期の効果が期待できる。
【0021】
本発明の治療組成物は、人工透析患者の皮膚そう痒症及び副甲状腺機能亢進症のいずれに対しても有効な治療効果を有しており、個々の症状に対する治療組成物として使用できることはもちろんのこと、長期人工透析患者にはこれらの症状を共に有する患者も多く、そのような患者に対しては皮膚そう痒症及び副甲状腺機能亢進症治療組成物として使用することもできる。
【0022】
【実施例】
以下に、本発明の実施例を説明する。
【0023】
【製造例】
カプセル剤
γ−リノレン酸を約22重量%含有する油脂235重量部とビタミンE(タマ生化学(株)製TM−70G)65重量部とを通常の方法で混合し、ゼラチンカプセル(富士カプセル(株)製フットボール型No.5)に充填して、1カプセル中にγ−リノレン酸を50mg含むカプセルを製造した。
【0024】
尚、上記γ−リノレン酸を含有する油脂は、特開昭63−283589号公報に記載の方法により抽出したものを用いた。すなわち、ムコール シルシネロイデス(Mucor circinelloides HUT1121(FERM P-9359))の培養菌体から、n−ヘキサン抽出法により抽出することにより、γ−リノレン酸を含有する油脂を得た。
【0025】
【実施例1】
臨床試験1(皮膚そう痒症治療組成物の効果)
本発明の人工透析患者の皮膚そう痒症治療組成物について、上記製法により得られたカプセル剤を用いて臨床試験を行った。以下に、結果を説明する。
【0026】
(1)投与方法
表1に示す透析経歴及びそう痒症状を有する5人の人工透析患者に、上記製造例により得られたカプセル剤を、1日7カプセル(朝食後4カプセル、夕食後3カプセル)の割合(γ−リノレン酸量として350mg/日)で、2週間連続投与した。
【0027】
【表1】

Figure 0003816545
【0028】
(2)評価
効果の評価は、投与前と投与後に各々、患者の痒みの自覚症状及び専門医による臨床所見で行った。痒みの自覚症状の評価は、そう痒感の程度を表2に示した白取 昭(市立札幌病院)の原表(西日皮膚45、1042〜1052、1983)に基づき0〜4の5段階で評価することにより行った。また臨床所見は、皮膚の苔癬化、掻破痕の程度を下記基準で評価した。結果を表3に示す。
【0029】
+++ : 皮膚の苔癬化、掻破痕が著しい
++ : 皮膚の苔癬化、掻破痕が認められる
+ : 皮膚の苔癬化、掻破痕がわずかに認められる
− : 皮膚の苔癬化、掻破痕が認められない。
【0030】
【表2】
Figure 0003816545
【0031】
【表3】
Figure 0003816545
この結果から、本発明の皮膚そう痒症治療組成物を投与された人工透析患者は、全員が痒みの軽減を自覚し、また、皮膚の苔癬化、掻破痕も低減されており、そう痒症に対して有効であることが明らかである。
【0032】
【実施例2】
臨床例2(副甲状腺機能亢進症治療組成物の効果)
表4に示す透析経歴及び副甲状腺機能亢進症状を有する4名の人工透析患者に、上記製造例により得られたカプセル剤を、1日7カプセル(朝食後4カプセル、夕食後3カプセル)の割合(γ−リノレン酸量として350mg/日)で投与した。投与は、4名とも同じ日に開始し、患者No.1〜3については、3カ月間連続投与し、アレグロ Intact PTHキット(日本メジフィジックス(株)製)による値を記載した(表5)。また、患者No.4については、投与開始後3カ月間は上記3名の患者と同量を投与し、その後は朝食後、1日3カプセル(γ−リノレン酸量として150mg/日)を5カ月間連続投与し、PTHキット「ヤマサ」(ヤマサ醤油(株)製)による値を記載した(表6)。なお、4名の患者は定期的にPTHの値を測定しており、それぞれ投与開始前後のPTH値を記載するにあたっては、投与開始時を起点とした前後の月数を併記した。
【0033】
【表4】
Figure 0003816545
【0034】
【表5】
Figure 0003816545
【0035】
【表6】
Figure 0003816545
【0036】
表5及び表6の結果から、本発明の副甲状腺機能亢進症治療組成物を投与された4名の人工透析患者のPTHは、投与後いずれも低下しており、副甲状腺機能亢進症に対して有効であることが明らかである。なお、投与開始前後において特別な治療は行われず、また、定期的に行われている臨床検査値にも特に以上は認められず、安全性にも問題がないことが判った。
【0037】
【発明の効果】
本発明の人工透析患者の皮膚そう痒症治療組成物は、皮膚そう痒症に対して十分な治療効果を有する。また、本発明の人工透析患者の副甲状腺機能亢進症治療組成物は、副甲状腺機能亢進によるPTHの過剰分泌に対して十分な抑制効果を有する。これらの治療組成物は、いずれも安全性にも優れている。[0001]
[Industrial application fields]
The present invention relates to a composition for treatment of cutaneous pruritus and a composition for hyperparathyroidism in an artificial dialysis patient, and more particularly, to an dialysis patient containing γ-linolenic acid and dihomo-γ-linolenic acid or a derivative thereof. The present invention relates to a composition for treating cutaneous pruritus and a composition for treating hyperparathyroidism.
[0002]
[Prior art]
With the recent development of dialysis therapy, chronic renal failure is now less likely to be a direct cause of death, and long-term survival of more than 20 years has become possible by selecting an appropriate treatment. Along with this, the patient's quality of life (hereinafter referred to as QOL) is maintained (continues a normal life, is not physically injured, mentally maintained, is not socially obstructed, and actively Getting stability) is becoming very important. Therefore, countermeasures for complications associated with long-term survival and appropriate treatment methods for early rehabilitation are now being sought.
[0003]
One of the complications of long-term dialysis patients is cutaneous pruritus, which affects more than 80% of patients. There are many cases where it is impossible to sleep due to pruritus, and almost all cases have xeroderma. Thus, although pruritus afflicts many artificial dialysis patients, the onset mechanism is unknown, and an effective treatment method has not been established.
[0004]
Currently, pruritus is caused by hyperparathyroidism, lack of trace elements such as zinc, presence of uremic substances, skin weakening, histamine release promotion associated with increased mast cells, etc. For these, administration of vitamin D agents, supplementation of trace elements, administration of antihistamines and antiallergic agents, and other urea-containing ointments, mugwort extract lotions, etc. are performed.
[0005]
However, neither method necessarily shows a satisfactory therapeutic effect. Therefore, there is a strong demand for the development of a therapeutic agent that has a sufficient therapeutic effect and has no side effect problems for pruritus in an artificial dialysis patient.
[0006]
On the other hand, in chronic renal failure, the number of nephrons decreases regardless of the type of kidney disease, and when the symptoms progress further, renal function is abolished and shifts to dialysis. When renal function decreases due to a decrease in the number of nephrons, serum Ca decreases, active vitamin D production decreases, parathyroid hormone (hereinafter referred to as PTH) secretion inhibition increases serum Ca set point, parathyroid active vitamin A decrease in the number of D receptors, abnormal phosphorus metabolism, and the like occur, which cause excessive secretion of PTH, and develop secondary hyperparathyroidism.
[0007]
PTH is essential for the regulation of calcium and phosphorus metabolism, and has a great influence on bone maintenance. Excessive secretion acts on bone to cause fibrotic osteoarthritis. PTH is also said to be one of the uremic substances causing anemia, tissue ulcers, central nervous symptoms, sensation, hyperlipidemia, etc., and onset of renal osteodystrophy, an important complication for dialysis patients In many cases, this case is difficult to treat, and it significantly inhibits QOL of dialysis patients.
[0008]
In addition, secondary hyperparathyroidism is said to have already existed from the time of mild renal function decline, and it is important to prevent it early because long-term dialysis cases become more frequent. .
[0009]
For the treatment of secondary hyperparathyroidism, for example, active vitamin D agents are used for hypocalcemia and reduced production of active vitamin D. There are side effects such as prone to calcification. Next, pulse therapy used in the case of resistance to an active vitamin D agent also has problems such as hypotension osteopathy in addition to these disadvantages. In addition, active vitamin D agents and calcium agents are used to lower the serum Ca set point for inhibiting PTH secretion, but there are also similar difficulties. On the other hand, in hyperphosphatemia due to abnormal phosphorus metabolism, aluminum hydroxide has become a contraindicated drug in dialysis patients, and calcium carbonate and calcium acetate are used instead. However, calcium preparations have a high risk of hypercalcemia due to their low phosphorus adsorption ability, which requires large doses. In addition, low protein diet therapy is also performed in conjunction with phosphorus restriction, but there are adverse effects such as nutritional disorders and catabolism-promoting action due to the low protein diet. Furthermore, parathyroidectomy is also performed as a surgical procedure, but it is a great mental and physical burden for the patient.
[0010]
As described above, all the treatment methods for hyperparathyroidism have difficulties, and in particular, in the case of long-term dialysis patients, even if they are combined, a satisfactory therapeutic effect is not obtained. It's real.
[0011]
[Problems to be solved by the invention]
The present invention has been made from the above viewpoints, and provides a composition for treating pruritus pruritus and a composition for hyperparathyroidism in an artificial dialysis patient having sufficient effects and high safety. Let it be an issue.
[0012]
[Means for Solving the Problems]
As a result of intensive studies to solve the above problems, the present inventor is effective in pruritus in artificial dialysis patients, and is excessively secreted by hyperparathyroidism. The inventors have found that PTH is significantly reduced and have completed the present invention.
[0013]
That is, the present invention is a composition for treating cutaneous pruritus of an artificial dialysis patient containing one or more selected from γ-linolenic acid, dihomo-γ-linolenic acid and derivatives thereof. Furthermore, the present invention provides a therapeutic composition for hyperparathyroidism in an artificial dialysis patient containing one or more selected from γ-linolenic acid, dihomo-γ-linolenic acid and derivatives thereof.
[0014]
Hereinafter, the present invention will be described in detail.
The therapeutic composition of the present invention contains one or more selected from γ-linolenic acid, dihomo-γ-linolenic acid and derivatives thereof (hereinafter sometimes referred to as “γ-linolenic acid and the like”). It has a therapeutic effect on cutaneous pruritus and hyperparathyroidism in dialysis patients. ω6 unsaturated fatty acids such as γ-linolenic acid and dihomo-γ-linolenic acid are essential fatty acids, and these and their derivatives are known to have various physiological activities. It is not known at all to be effective against pruritus and hyperparathyroidism, and was first discovered by the present inventors.
[0015]
The above γ-linolenic acid and the like are oils and fats contained in filamentous fungi such as Mucor, Mortierella, and Rizopus, plants such as evening primrose and borage, and algae such as spirulina. However, extracts from these may be used as they are, or purified ones may be used. Moreover, (gamma)-linolenic acid etc. can also be obtained by chemical synthesis, and what is marketed may be used. Note that γ-linolenic acid and the like are essential fatty acids and are used for food, and there is no particular problem with safety.
[0016]
Examples of the derivatives of γ-linolenic acid or dihomo-γ-linolenic acid include esters obtained by reacting these with various alcohols, such as ethyl ester, glycerol ester, phospholipid, and inorganic or organic bases. Examples thereof include salts obtained by acting at a molar ratio, such as sodium salts and potassium salts.
[0017]
The dosage form of the composition for treating pruritus and the composition for treating hyperparathyroidism in an artificial dialysis patient according to the present invention is not particularly limited, and is selected from γ-linolenic acid, dihomo-γ-linolenic acid and derivatives thereof 1 Species or a mixture of two or more, or extracts obtained from the oils and fats of the above-mentioned filamentous fungi and plants, generally harmless one or several types of vehicles, carriers, excipients, integration Pills, preservatives, stabilizers, flavoring agents, etc., and tablets, granules, capsules, liquid preparations, etc .; suppositories; vaginal preparations; ointments, creams, lotions, etc .; sterile solutions And injections such as suspensions and suspensions. These can be manufactured using a conventionally known technique.
[0018]
For example, one or more of the above γ-linolenic acid and the like and a binder such as corn starch and gelatin, an excipient such as microcrystalline cellulose, a leavening agent such as potato starch and sodium alginate, lactose, sucrose, etc. Sweetening agents and the like can be dispensed to form powders, tablets, pills, and granules. Capsules are prepared by filling a mixture of γ-linolenic acid and other oils and fats into soft gelatin capsules, hard gelatin capsules and the like according to a conventional method. Furthermore, a cyclodextrin inclusion product of cyclodextrin and γ-linolenic acid or the like can be obtained by a conventional method. When used as an external preparation, petrolatum, paraffin, fats and oils, lanolin and the like are used as a base.
[0019]
Examples of the γ-linolenic acid include α-linolenic acid, ω3-unsaturated fatty acids such as eicosapentaenoic acid and docosahexaenoic acid, ω5-unsaturated fatty acids such as myristoleic acid, and palmitooleic acid. ω9 unsaturated fatty acids, ω9 unsaturated fatty acids such as oleic acid and erucic acid, and saturated fatty acids such as lauric acid and myristic acid may be added at an arbitrary ratio. In order to prevent oxidation of γ-linolenic acid and the like, an antioxidant such as vitamin E, ascorbyl palmitate, ascorbyl stearate may be added.
[0020]
Regarding the dose, there is no particular limitation on the amount of γ-linolenic acid or dihomo-γ-linolenic acid or a derivative thereof, but if the dose is too large, the stool tends to be loose. The dose may be appropriately set according to the patient's age, medical history, disease type, symptoms, and the like. In the treatment of cutaneous pruritus or hyperparathyroidism, the desired effect can be expected when used in the range of 50 to 600 mg / day, preferably in the range of 100 to 450 mg / day.
[0021]
The therapeutic composition of the present invention has an effective therapeutic effect on both cutaneous pruritus and hyperparathyroidism in an artificial dialysis patient, and it can of course be used as a therapeutic composition for individual symptoms. Of course, many long-term dialysis patients have both of these symptoms, and can be used as a therapeutic composition for cutaneous pruritus and hyperparathyroidism.
[0022]
【Example】
Examples of the present invention will be described below.
[0023]
[Production example]
235 parts by weight of an oil and fat containing about 22% by weight of capsule γ-linolenic acid and 65 parts by weight of vitamin E (TM-70G manufactured by Tama Seikagaku Co., Ltd.) are mixed by a conventional method, and gelatin capsules (Fuji capsule ( Co., Ltd. football type No. 5) was filled to prepare a capsule containing 50 mg of γ-linolenic acid in one capsule.
[0024]
The oil and fat containing γ-linolenic acid was extracted by the method described in JP-A-63-283589. That is, oils and fats containing γ-linolenic acid were obtained by extraction from cultured cells of Mucor circinelloides HUT1121 (FERM P-9359) by n-hexane extraction.
[0025]
[Example 1]
Clinical trial 1 (Effect of composition for treatment of cutaneous pruritus)
A clinical trial was conducted on the composition for treatment of cutaneous pruritus of an artificial dialysis patient according to the present invention, using the capsule obtained by the above-mentioned production method. The results will be described below.
[0026]
(1) Administration method The capsules obtained by the above production examples were given 7 capsules per day (4 capsules after breakfast, 3 capsules after dinner) to 5 artificial dialysis patients with dialysis history and pruritus shown in Table 1. ) At a rate (350 mg / day as the amount of γ-linolenic acid) for 2 weeks.
[0027]
[Table 1]
Figure 0003816545
[0028]
(2) Evaluation of the evaluation effect was performed based on subjective symptoms of itching of patients and clinical findings by specialists before and after administration. The evaluation of the subjective symptoms of itching is based on five levels of 0 to 4, based on the original table (Nishihi skin 45, 1042-1052, 1983) by Akira Shiratori (Sapporo Sapporo Hospital) showing the degree of pruritus in Table 2. This was done by evaluating. The clinical findings were evaluated according to the following criteria for the degree of lichenification and scratching of the skin. The results are shown in Table 3.
[0029]
++++: Skin lichenification and marked scars +++: Skin lichenification and scratching marks are observed +: Skin lichenification and slight scratching marks are observed-: Skin lichenification and scratching marks Is not allowed.
[0030]
[Table 2]
Figure 0003816545
[0031]
[Table 3]
Figure 0003816545
From this result, all the dialysis patients who were administered the composition for treating cutaneous pruritus of the present invention were aware of the reduction of itching, and lichenification of the skin and scratch marks were also reduced. Clearly effective against the disease.
[0032]
[Example 2]
Clinical Example 2 (Effect of therapeutic composition for hyperparathyroidism)
The ratio of 7 capsules (4 capsules after breakfast, 3 capsules after dinner) daily to 4 artificial dialysis patients with dialysis history and hyperparathyroidism symptoms shown in Table 4 (The amount of γ-linolenic acid was 350 mg / day). Administration was started on the same day for all four patients, and patients No. 1 to 3 were continuously administered for 3 months, and the values according to Allegro Intact PTH kit (manufactured by Mediphysix Japan) were listed (Table 5). . For patient No. 4, the same amount as the above three patients was administered for 3 months after the start of administration, and thereafter 3 capsules (150 mg / day as the amount of γ-linolenic acid) per day after breakfast were administered. It was administered continuously for months, and the values according to the PTH kit “Yamasa” (manufactured by Yamasa Shoyu Co., Ltd.) were described (Table 6). Four patients regularly measured the PTH value, and in describing the PTH values before and after the start of administration, the months before and after the start of the administration were also shown.
[0033]
[Table 4]
Figure 0003816545
[0034]
[Table 5]
Figure 0003816545
[0035]
[Table 6]
Figure 0003816545
[0036]
From the results of Tables 5 and 6, the PTH of the 4 artificial dialysis patients administered with the hyperparathyroidism treatment composition of the present invention was decreased after administration, and It is clear that it is effective. In addition, special treatment was not performed before and after the start of administration, and the above clinical laboratory values were not particularly observed, and it was found that there was no problem with safety.
[0037]
【The invention's effect】
The composition for treatment of cutaneous pruritus of an artificial dialysis patient of the present invention has a sufficient therapeutic effect on cutaneous pruritus. Moreover, the composition for hyperparathyroidism treatment of an artificial dialysis patient of the present invention has a sufficient inhibitory effect on the excessive secretion of PTH due to hyperparathyroidism. These therapeutic compositions are all excellent in safety.

Claims (1)

γ−リノレン酸、ジホモ−γ−リノレン酸、及びこれらのエチルエステル、グリセロールエステル、並びにこれらの塩から選ばれる1種又は2種以上を含有する人工透析患者の合併症としての皮膚そう痒症治療組成物。Treatment of skin pruritus as a complication of an artificial dialysis patient containing one or more selected from γ-linolenic acid, dihomo-γ-linolenic acid , and their ethyl ester, glycerol ester, and salts thereof Composition.
JP07707094A 1993-04-16 1994-04-15 Composition for treatment of cutaneous pruritus and composition for treatment of hyperparathyroidism in an artificial dialysis patient Expired - Lifetime JP3816545B2 (en)

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