JPH1123571A - Examination method for myocardial ischemia in diabetes - Google Patents

Examination method for myocardial ischemia in diabetes

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Publication number
JPH1123571A
JPH1123571A JP17842197A JP17842197A JPH1123571A JP H1123571 A JPH1123571 A JP H1123571A JP 17842197 A JP17842197 A JP 17842197A JP 17842197 A JP17842197 A JP 17842197A JP H1123571 A JPH1123571 A JP H1123571A
Authority
JP
Japan
Prior art keywords
myocardial ischemia
value
blood
urine
diabetes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP17842197A
Other languages
Japanese (ja)
Inventor
Atsuyuki Shinno
厚幸 進野
Masahiko Nakano
昌彦 中野
Tomokazu Tachikawa
智一 立川
Toraichi Tawara
寅一 田原
Nagayuki Tani
長行 谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Gas Chemical Co Inc
Original Assignee
Mitsubishi Gas Chemical Co Inc
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Filing date
Publication date
Application filed by Mitsubishi Gas Chemical Co Inc filed Critical Mitsubishi Gas Chemical Co Inc
Priority to JP17842197A priority Critical patent/JPH1123571A/en
Publication of JPH1123571A publication Critical patent/JPH1123571A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To examine whether a diabetes patient suffers from myocardial ischemia or not by measuring the thrombo moduline concentration in the blood or urine of the diabetes patient suffering from hyperlipidemia and hypertension. SOLUTION: When no abnormality can be detected on a resting electrocardiogram and no anginal ache is recognized for a diabetes patient suffering from hyperlipidemia and hypertension, the thrombo moduline(TM) value is measured. An asymptomatic myocardial ischemia patient can be quickly and simply detected. A urine sample such as night storage urine or early morning unine can be used in addition to a blood sample such as blood serum or blood plasma as the measurement sample of the TM value. The TM value in blood is set to about U/ml or below, and the TM value in urine is set to about U/mgCr or below as the normal range of the TM value, for example. The enzyme immunoassay, radioimmunoassay, chemoluminescence measurement, or latex agglutination test can be used for the measurement system of the TM value. The asymptomatic myocardial ischemia patient can be quickly detected by a simple method.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、糖尿病における心
筋虚血の検査に関する。特に無症候性心筋虚血の検査に
関する。無症候性心筋虚血とは、狭心痛などの自覚症状
を伴わない心筋虚血のことである。更に詳しくは、本発
明は、血液中または尿中のトロンボモジュリン濃度を測
定することにより、糖尿病における心筋虚血をきわめて
効率的に検査するための方法に関する。
The present invention relates to a test for myocardial ischemia in diabetes. In particular, it relates to a test for asymptomatic myocardial ischemia. Asymptomatic myocardial ischemia is myocardial ischemia without subjective symptoms such as angina. More particularly, the present invention relates to a method for extremely efficiently testing myocardial ischemia in diabetes by measuring the concentration of thrombomodulin in blood or urine.

【0002】[0002]

【従来の技術】我が国では、生活様式、特に食生活の欧
米化、運動不足、国民の平均寿命の延長に伴い、糖尿病
の発症頻度、患者数はともに年々増加している。また、
糖尿病特有の腎症、網膜症、心血管障害、脳血管障害な
どの血管障害に基づく慢性合併症も多発・重症化してき
ており、医学的には勿論のこと、社会的にも、医療経済
的にも大きな問題となってきている。インスリン治療の
導入、各種抗生物質の開発により、糖尿病昏睡、感染症
による死亡率が激減し、かわって糖尿病腎症、虚血性心
疾患、脳血管障害などの血管障害に伴う合併症が主たる
死因になってきている。この中で、虚血性心疾患は特に
患者の生命予後に大きな影響を与える合併症である。糖
尿病では、狭心痛などの自覚症状を伴わない無症候性心
筋虚血となる割合が高く、また、多枝病変やびまん性病
変が多いので、いったん発症すると重篤な心不全、不整
脈を起こす頻度が高い。冠動脈病変が起こっていても無
症候性であるため、狭心症発作の警告を発することなく
致命的な心事故に繋がる危険が高く、また、たとえ、無
症候性心筋虚血が確認されていても、有症候性の心筋虚
血に比べて対応が遅れがちとなり、予後に悪影響を及ぼ
す危険性が指摘されている。虚血性心疾患のリスクファ
クターとしては高脂血症、高血圧症、喫煙などが考えら
れているが、これらリスクファクターのみでは虚血性心
疾患の検索は不十分であり、ましてや、明らかな狭心痛
を認めない無症候性心筋虚血の場合は、虚血を発見する
簡便な検査方法はこれまで存在しなかった。
2. Description of the Related Art In Japan, the frequency of onset of diabetes and the number of patients have been increasing year by year due to lifestyle changes, particularly the westernization of eating habits, lack of exercise, and prolongation of the average life expectancy of the people. Also,
Chronic complications based on vascular disorders such as nephropathy, retinopathy, cardiovascular disorders, cerebrovascular disorders, etc., which are unique to diabetes, are becoming more frequent and severe, resulting in medical, social and medical economics as well as medical Has become a big problem. With the introduction of insulin therapy and the development of various antibiotics, mortality due to diabetic coma and infectious diseases has been drastically reduced, and complications associated with vascular disorders such as diabetic nephropathy, ischemic heart disease, cerebrovascular disorder, etc. It has become to. Among them, ischemic heart disease is a complication that significantly affects the prognosis of patients' lives. In diabetes, the rate of asymptomatic myocardial ischemia without subjective symptoms such as angina pain is high, and there are many multi-vessel or diffuse lesions. high. Since asymptomatic coronary lesions occur, there is a high risk of fatal cardiac accident without warning of angina attack, and even if asymptomatic myocardial ischemia has been confirmed. Also, it has been pointed out that the response tends to be delayed as compared with symptomatic myocardial ischemia, and that there is a risk of adversely affecting the prognosis. Although hyperlipidemia, hypertension, smoking, etc. are considered as risk factors for ischemic heart disease, the search for ischemic heart disease is not sufficient with these risk factors alone, and even more obvious is angina pain. In the case of asymptomatic myocardial ischemia that has not been observed, there has been no simple test method for detecting ischemia.

【0003】[0003]

【発明が解決しようとする課題】無症候性心筋虚血をい
かにして早期の段階で発見するかが糖尿病患者の日常診
療における重要な課題となっている。無症候性心筋虚血
患者を検出するためには、運動負荷試験禁忌例を除きル
ーチン検査として積極的に運動負荷試験を実施し、さら
に負荷心筋シンチなどによる検査を行うべきことが提言
されている(三浦ら 現代医療 26 3441-3449 1994 、
田村ら 平成5年度厚生省循環器病研究委託費による研
究報告集 1992 、宮川ら 現代医療 26 3485-3492 199
4 )。しかしながら、その実施には、糖尿病の患者数
や、専門の施設設備、医師の監督、費用や時間を要する
などの問題点が山積し、必ずしも充分な検査をなし得て
いないのが現状であり、多くの糖尿病患者の中から精査
すべき患者を簡易な方法で選別する検査手段の開発が望
まれている。
How to detect asymptomatic myocardial ischemia at an early stage is an important issue in the daily care of diabetic patients. Except for contraindications to exercise stress tests, it is suggested that active stress tests should be actively performed as a routine test, and tests with stress myocardial scintigraphy should be performed to detect patients with asymptomatic myocardial ischemia (Miura et al. Modern Medicine 26 3441-3449 1994,
Tamura et al. 1993 Ministry of Health and Welfare cardiovascular disease research commissioned cost research report collection 1992 by, Miyagawa, et al. Modern medicine 26 3485-3492 199
Four ). However, its implementation has a lot of problems such as the number of patients with diabetes, specialized facility equipment, supervision of doctors, cost and time, etc., and at present it is not always possible to perform sufficient tests, There is a demand for the development of a testing means for selecting a patient to be scrutinized out of many diabetic patients by a simple method.

【0004】[0004]

【課題を解決するための手段】本発明は、このような課
題を解決することを目的とし、血液中または尿中のトロ
ンボモジュリン(TM)濃度を測定することにより、糖
尿病における無症候性心筋虚血のきわめて効率的な検査
方法を提供しようとするものである。測定の対象となる
ものは、好ましくは血液及び尿、更に好ましくは血清及
び夜間蓄尿であるが、これに限定されるものではなく他
の体液を対象とすることもできる。
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to measure asymptomatic myocardial ischemia in diabetes by measuring the concentration of thrombomodulin (TM) in blood or urine. It is intended to provide an extremely efficient inspection method. The measurement target is preferably blood and urine, more preferably serum and night urine collection, but is not limited thereto, and other body fluids can be used.

【0005】TMは、主に血管内皮細胞膜上に存在し、
血管内皮細胞の持つ抗血栓作用の一翼を担っている糖タ
ンパク質である(Owenら J.Biol.Chem. 256 5532-5535
1981, Esmonら J.Biol.Chem. 264 4743-4746 198
9)。血管内皮細胞が種々の要因により障害を受ける
と、血管内皮細胞膜上のTMは、血中または尿中に可溶
性TMとして逸脱する(Ishii ら J.Clin.Invest. 76 2
178-2181(6) 、UchiyamaらThromb.Res. 65 593-604 199
2 )。播種性血管内凝固症候群(DIC )(Amanoら Thro
mb.Haemostas. 68 404-406 1992)、全身エリテマトー
デス(SLE)をはじめとした膠原病(Kazama Acta Haema
tol.Jpn. 51 1387-1394 1988)、糖尿病(Oidaら Diabe
tes Res.Clin.Prac. 10 193-196 1990 )などでは、全
身性の血管内皮細胞障害を反映して、血中TM値が上昇
することが知られている。糖尿病においては、糖尿病腎
症、網膜症などの糖尿病細小血管症で血中TM値のみな
らず尿中TM値も高値となることが報告されている(Ta
nakaら Clin.Chem. 37 269-272 1991、Shimanoら Clini
ca Chimica Acta 225 89-96 1994)が、最近、大血管症
でも血中TM値が上昇することが報告されている(Mats
uokaら Diabetes Care 18 731 1995 )。しかし、これ
までTM値を糖尿病における無症候性心筋虚血の診断に
利用する検査方法は全く知られていなかった。
[0005] TM mainly exists on the vascular endothelial cell membrane,
It is a glycoprotein that plays a role in the antithrombotic action of vascular endothelial cells (Owen et al. J. Biol. Chem. 256 5532-5535
1981, Esmon et al. J. Biol. Chem. 264 4743-4746 198
9). When endothelial cells undergo failure due to various factors, TM on the vascular endothelial cell membrane, departing as a soluble TM into the blood or urine (Ishii et al. J. Clin. Invest. 76 2
178-2181 (6), Uchiyama et al. Thromb.Res. 65 593-604 199
2). Disseminated intravascular coagulation (DIC) (Amano et al. Thro
mb.Haemostas. 68 404-406 1992), collagen diseases such as systemic lupus erythematosus (SLE) (Kazama Acta Haema)
tol. Jpn. 51 1387-1394 1988), diabetes (Oida et al. Diabe
tes Res. Clin. Prac. 10 193-196 1990) and the like, it is known that blood TM levels increase reflecting systemic vascular endothelial cell damage. In diabetes, it has been reported that not only blood TM values but also urinary TM values are increased in diabetic microangiopathies such as diabetic nephropathy and retinopathy (Ta).
naka et al. Clin. Chem. 37 269-272 1991, Shimano et al. Clini.
ca Chimica Acta 225 89-96 1994) has recently been reported to increase blood TM levels in macrovascular disease (Mats
uoka et al. Diabetes Care 18 731 1995). However, no test method has been known which utilizes TM values for diagnosis of asymptomatic myocardial ischemia in diabetes.

【0006】我々は、鋭意検討の結果、TM値を利用す
ることにより、糖尿病における無症候性心筋虚血を簡便
に、かつ高精度で検出する検査方法を見い出した。冠血
管障害危険因子である高脂血症及び/又は高血圧症を有
するが、安静時心電図では異常を検出できず、また狭心
痛も認められない無症候性の症例のうち、血中TM値高
値を示す症例では、血中TM値測定時点あるいはその後
の経過の中で運動負荷心電図やジピリダモール負荷心筋
シンチグラフィー(以下、ジピリダモール負荷心筋シン
チと言う)といった精査手段で高率に虚血性心疾患を認
めた。一方、血中TM値が正常である症例では、虚血性
心疾患を認める例は極めて少ない。このことより、糖尿
病患者のうち、高脂血症及び/又は高血圧症を有する
が、安静時心電図では異常を検出できず、また、狭心痛
も認められない症例を対象にTM値を測定することによ
り、無症候性心筋虚血患者を迅速かつ簡便に検出するこ
とができる。このようにして測定されたTM値が正常範
囲を超える症例では無症候性心筋虚血の疑いがあると判
定される。
[0006] As a result of intensive studies, we have found a test method for simply and accurately detecting asymptomatic myocardial ischemia in diabetes by utilizing the TM value. Among asymptomatic patients who have hyperlipidemia and / or hypertension as risk factors for coronary vasculopathy but cannot detect abnormalities on resting ECG and have no angina pain, high blood TM level In the cases showing, a high rate of ischemic heart disease was observed by close examination such as exercise stress electrocardiogram and dipyridamole stress myocardial scintigraphy (hereinafter referred to as dipyridamole stress myocardial scintigraphy) during or after the blood TM value measurement. Was. On the other hand, in the case where the blood TM value is normal, there are very few cases in which ischemic heart disease is recognized. From this, among the diabetic patients, hyperlipidemia and / or hypertension, but abnormalities cannot be detected in a resting electrocardiogram, and TM values are measured in subjects in which angina pain is not observed. As a result, a patient with asymptomatic myocardial ischemia can be quickly and easily detected. In cases where the TM value thus measured exceeds the normal range, it is determined that there is a suspicion of asymptomatic myocardial ischemia.

【0007】TM値の正常範囲は、TM濃度の測定系に
より異なるが、例えば、三菱瓦斯化学株式会社製の酵素
免疫測定法キットであるトロンボモジュリン「MGC
C」EIAを用いた場合には、血中TM値は25.9U/ml以
下、尿中TM値は、45.3U/mgCr以下である。TMの測定
系は、酵素免疫測定法に限定されるものではなく、TM
に結合する抗体を用いる方法であればどのようなもので
もよく、酵素免疫測定法の他に、放射免疫測定法、化学
発光免疫法、ラテックス凝集法などが挙げられる。トロ
ンボモジュリンに結合する抗体は、ポリクローナル抗
体、モノクローナル抗体及びそれらの断片を用いること
ができ、マウス抗ヒトTMモノクローナル抗体やウサギ
抗ヒトTMポリクローナル抗体、ヤギ抗ヒトTMポリク
ローナル抗体などの抗体が挙げられる。TMの測定試料
には、血清、血漿などの血液試料の他、夜間蓄尿、早朝
尿などの尿試料を用いることができる。以下、実施例に
より本発明を詳細に説明するが、本発明はその要旨を越
えない限り、以下の実施例によって限定されるものでは
ない。
The normal range of the TM value varies depending on the measurement system of the TM concentration. For example, thrombomodulin “MGC”, which is an enzyme immunoassay kit manufactured by Mitsubishi Gas Chemical Company, Inc.
When "C" EIA was used, the blood TM value was 25.9 U / ml or less, and the urine TM value was 45.3 U / mgCr or less. The measurement system of TM is not limited to the enzyme immunoassay,
Any method may be used as long as it uses an antibody that binds to the enzyme. Examples of the method include an enzyme immunoassay, a radioimmunoassay, a chemiluminescence immunoassay, and a latex agglutination method. Antibodies that bind to thrombomodulin include polyclonal antibodies, monoclonal antibodies and fragments thereof, and include antibodies such as mouse anti-human TM monoclonal antibodies, rabbit anti-human TM polyclonal antibodies, and goat anti-human TM polyclonal antibodies. As a TM measurement sample, a urine sample such as night urine collection or early morning urine can be used in addition to a blood sample such as serum and plasma. Hereinafter, the present invention will be described in detail with reference to examples. However, the present invention is not limited to the following examples unless it exceeds the gist.

【0008】[0008]

【実施例】【Example】

実施例1 1988年秋から1990年春に血中TM値の初回測定を行い、
引き続き約6ヶ月に1回の頻度で経過観察を行った糖尿
病外来患者のうち、開始時年齢が71歳未満かつ5年間の
経過が明らかな55例を対象とした。冠血管障害の評価
は、安静時心電図、運動負荷心電図あるいはジピリダモ
ール負荷心筋シンチによった。血清コレステロール濃度
220mg/dl以上または血清トリグリセライド濃度150mg/dl
以上または血清HDLコレステロール濃度40mg/dl 以下で
高脂血症と診断された患者を高脂血症とした。平均値血
圧100mmHg 以上であり、高血圧症と診断された患者を高
血圧症とした。血中TM値の測定には、トロンボモジュ
リン「MGCC」EIA(商品名、三菱瓦斯化学株式会
社製)を用い、血清を試料とした。
Example 1 First measurement of blood TM value was performed from fall 1988 to spring 1990,
Of the diabetic outpatients who were followed up approximately once every six months, 55 subjects with a starting age of less than 71 years and a clear 5-year course were included. Evaluation of coronary vascular disorder was based on resting ECG, exercise ECG or dipyridamole-loaded myocardial scintigraphy. Serum cholesterol concentration
220mg / dl or more or serum triglyceride concentration 150mg / dl
Patients diagnosed with hyperlipidemia at the above or serum HDL cholesterol concentration of 40 mg / dl or less were hyperlipidemia. Patients with a mean blood pressure of 100 mmHg or more and diagnosed with hypertension were considered hypertensive. Serum was used as a sample by using a thrombomodulin “MGCC” EIA (trade name, manufactured by Mitsubishi Gas Chemical Co., Ltd.) to measure the blood TM value.

【0009】虚血性心疾患のリスクファクターである高
脂血症や高血圧症の有無、安静時心電図の異常所見の有
無、血中TM値の高低で全55症例を分類した結果を表1
に示した。高脂血症及び/又は高血圧症を有する患者
は、40例であり、このうち心筋虚血を発症した患者は18
例であったが、安静時心電図の異常所見で検出された患
者はわずか6例にすぎなかった。
Table 1 shows the results of classification of all 55 cases based on the presence or absence of hyperlipidemia or hypertension, the presence or absence of abnormal findings on ECG at rest, and the level of blood TM level, which are risk factors for ischemic heart disease.
It was shown to. Forty patients had hyperlipidemia and / or hypertension, of which 18 patients developed myocardial ischemia.
However, only 6 patients were detected by abnormal ECG findings at rest.

【0010】高脂血症及び/又は高血圧症を有し、安静
時心電図の異常もない患者は全患者中32例であった。上
記32例中血中TM値が高値であった患者は11例であった
が、このうち8例が心筋虚血を発症しており、実に73%
(8例/11 例)の高率で検出された。しかも、8例中7
例(88%)が無症候性心筋虚血であった。一方、血中T
M値が低値であった患者は、32例中21例であったが、こ
のうち心筋虚血を発症した患者は4例であり、この4例
中2例が有症候性であり、無症候性心筋虚血は2例にす
ぎず、偽陰性率は10%(2例/21 例)と極めて低率であ
った。
[0010] 32 of all patients with hyperlipidemia and / or hypertension and no abnormal ECG at rest. Eleven patients had high TM values in the above-mentioned 32 cases, but 8 of them developed myocardial ischemia, which was 73%.
(8 cases / 11 cases) were detected at a high rate. Moreover, 7 out of 8 cases
Cases (88%) had asymptomatic myocardial ischemia. On the other hand, blood T
Of the 32 patients, 21 patients had a low M value, of which 4 patients developed myocardial ischemia, 2 of 4 patients were symptomatic and none Symptomatic myocardial ischemia was only 2 cases, and the false negative rate was extremely low at 10% (2 cases / 21 cases).

【0011】一方、高脂血症、高血圧症ともに有しない
患者は全患者中15例であり、1例が有症候性心筋虚血を
発症したが、無症候性心筋虚血を発症した患者は皆無で
あった。以上より、高脂血症及び/又は高血圧症を有す
る患者に対して、TM値の測定を行うことにより、極め
て簡便にかつ高率に心筋虚血を発症する危険性を有する
患者を検出できることが明らかになった。更に、高脂血
症及び/又は高血圧症を有し、安静時心電図に異常のな
い患者に対して、TM値の測定を行うことにより、極め
て簡便にかつ高率に無症候性心筋虚血を発症する危険性
を有する患者を検出できることが明らかになった。
On the other hand, 15 patients had neither hyperlipidemia nor hypertension, and 1 patient had symptomatic myocardial ischemia, while 1 patient had symptomatic myocardial ischemia. There was none. As described above, by measuring the TM value of a patient having hyperlipidemia and / or hypertension, it is possible to detect a patient who has a risk of developing myocardial ischemia extremely easily and at a high rate. It was revealed. Furthermore, by measuring the TM value for a patient having hyperlipidemia and / or hypertension and having no abnormality in the resting electrocardiogram, asymptomatic myocardial ischemia can be extremely easily and at a high rate. It has been found that patients at risk of developing can be detected.

【0012】[0012]

【表1】 [Table 1]

【0013】[0013]

【発明の効果】血液中または尿中のTM値の測定を導入
することにより、糖尿病に伴う心筋虚血患者、特に安静
時心電図上での虚血変化や狭心痛を伴わない無症候性の
心筋虚血患者を簡便な方法で検査することができるよう
になる。
By introducing the measurement of TM value in blood or urine, patients with myocardial ischemia associated with diabetes, especially asymptomatic myocardium without ischemic changes on resting electrocardiogram and angina pain An ischemic patient can be examined by a simple method.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 田原 寅一 新潟県新潟市太夫浜字新割182番地 三菱 瓦斯化学株式会社新潟研究所内 (72)発明者 谷 長行 新潟県新潟市旭町通1番町754番地 新潟 大学 医学部 第一内科内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor: Toraichi Tahara 182, Niigata, Niigata City, Niigata City 754 Niigata University School of Medicine

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 高脂血症及び/又は高血圧症である糖尿
病患者の血液中又は尿中のトロンボモジュリン濃度を測
定することにより、該患者が心筋虚血を罹病しているか
否かを検査する方法。
1. A method for determining whether a diabetic patient suffering from hyperlipidemia and / or hypertension is suffering from myocardial ischemia by measuring the concentration of thrombomodulin in blood or urine of the patient. .
【請求項2】 高脂血症及び/又は高血圧症である糖尿
病患者の血液中又は尿中のトロンボモジュリン濃度を測
定することにより、該患者が無症候性心筋虚血を罹病し
ているか否かを検査する方法。
2. A method for determining whether or not a diabetic patient having hyperlipidemia and / or hypertension has asymptomatic myocardial ischemia by measuring the concentration of thrombomodulin in blood or urine of the diabetic patient. How to inspect.
【請求項3】 トロンボモジュリン濃度を測定する方法
がトロンボモジュリンに結合する抗体を用いる方法であ
る請求項1又は2記載の方法。
3. The method according to claim 1, wherein the method for measuring the thrombomodulin concentration is a method using an antibody that binds to thrombomodulin.
JP17842197A 1997-07-03 1997-07-03 Examination method for myocardial ischemia in diabetes Pending JPH1123571A (en)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17842197A JPH1123571A (en) 1997-07-03 1997-07-03 Examination method for myocardial ischemia in diabetes

Publications (1)

Publication Number Publication Date
JPH1123571A true JPH1123571A (en) 1999-01-29

Family

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Country Status (1)

Country Link
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