Protective effect of lipoproteins containing apoprotein A-I on Cu2+ - catalyzed oxidation of human low density lipoprotein

AbstractTwo apoprotein A-I (apoA-I)-containing lipoproteins, one containing apoA-I and apoA-II (LpA-I/A-II) and the other containing only apoA-I (LpA-I), were examined for their effect on Cu2+-mediated oxidation of low density lipoprotein (LDL). The presence of LpA-I or LpA-I/A-II prevented LDL oxidation when assessed by the electrophoretic mobility, apoprotein B fragmentation and amounts of thiobarbituric acid-reactive substances. The protection of LDL oxidation by these lipoproteins was effective for up to 6 h, with LpA-I being more active than LpA-I/A-II. Results from these in vitro model experiments raise a possibility that LpA-I mayplay a role in protecting LDL from Cu2+ -mediated oxidation

A case report of severe allergic reactionsinduced by black fly bites

多数のブユに刺されたのを契機に重症反応を呈するようになった29歳男性例について,アレルギー学的検討を行った。血清IgE値が高値(4591U/ml)であったが,免疫グロブリン,抗核抗体,血清補体価,CD4,CD8陽性リンパ球出現頻度などいずれも正常であり,またハウスダスト,カンジダその他16種類の吸入性抗原,ミツバチ,スズメバチ,アシナガバチ,ゴキブリ,ヤブカ,ユスリカなどの昆虫抗原に対する特異的IgE抗体はいずれも陰性であった｡一方ニッポンヤマブユ抗原による好塩基球からのヒスタミン遊離は陰性であったが,皮膚反応,IgE抗体は陽性を示したことから,本症例における重症化因子としてIgE系反応の関与が示唆された｡なおEBウイルス抗体価の検討では,EBV-EADR抗体はすべて陰性,EBNA-EIA抗体はIgG抗体のみ陽性であり,EBウイルスの既感染状態と判断されたが,病因との関連は明らかではなかった｡Allergic examinations were studied on the 29 years old male case, who suffered from severe systemic reactions by black fly bites, after the episode of much black fly bites in 1987. The level of serum IgE was high in the case, and both skin reaction and specitic IgE antibodies to whole body extract of black fly (Simulium nacojapi) were positive. The results obtained here suggest that IgE-mediated allergic reaction would play an important role in the severe systemic reactions induced by black fly bites

Daily low-dose cisplatin and concurrent thoracic irradiation for poor-risk patients with unresectable non-small-cell lung cancer.

A pilot study was conducted to assess the efficacy and feasibility of daily low-dose cisplatin with concurrent thoracic irradiation for clinically unresectable non-small-cell lung cancer (NSCLC). Patients with inoperable NSCLC who had poor risk factors such as advanced age, poor performance status, poor lung function, or concomitant active malignancy were entered into the study. Low-dose cisplatin (6 mg/m2) was administered daily before concurrent thoracic irradiation (2 Gy/day; total dose of 60 Gy) was given. Twenty-five patients were registered. The majority of the patients had either stage IIIA (24.0%) or stage IIIB (60.0%) disease. Fifteen patients (60.0%) completed the planned treatment. Both chemotherapy and radiotherapy were stopped in 3 patients (12.0%) due to poor response, and 7 patients (28.0%) partly received radiotherapy alone as a result of their toxicity response. The proportion of total administered dose to planned dose was 90.9% for chemotherapy and 99.3% for radiotherapy, which were comparable to those in previous studies for LA-NSCLC patients without poor risk factors. Grade 3 leukopenia and neutropenia developed in 14 patients (56.0%) and 10 patients (40.0%), respectively, but grade 4 toxicity was not encountered. Grade 3 pneumonitis and esophagitis were observed in 4 patients (16.0%) and 2 patients (8.0%), respectively. The overall response rate was 60.0%. The median survival time was 22 months, and the 2-year survival rate was 50.3%. Daily low-dose cisplatin and concurrent thoracic irradiation were well tolerated even by poor-risk patients with NSCLC, and showed a therapeutic efficacy similar to that for good-risk patients.</p

気管支喘息における複合温泉療法と気道炎症反応

Efficacy of complex spa therapy was studied in 55 patients with bronchial asthma. Complex spa therapy was effective in 47 (85.5%) of the 55 patients with bronchial asthma : marked efficacy was observed in 15 (27.3%), moderate in 32 (58.2%), slight in 6 (10.9%) and no efficacy in 2 patients (3.6%). Improvement of clinical symptoms and findings by complex spa therapy was more clearly observed in patients with an increased proportion of BAL lymphocytes, neutrophils and eosinophils. These findings suggest that complex spa therapy more affects cell infiltration in the airways than bronchoconstriction induced by chemical mediators. Improvement of ventilatory function represented by FEV1.0% value was higher in patients with a low proportion of BAL neutrophils, suggesting that patients with increased number of BAL neutrophils require longer complex spa therapy than those without BAL neutrophilia.気管支喘息55例を対象に,複合温泉療法(温泉プール水泳訓練+ヨードゾル吸入+鉱泥湿布療法)を試み,その臨床効果と気道炎症反応との関連について,若干の検討を加えた｡1.複合温泉療法の臨床効果では,著効15例(27.3%),有効32例(58.2%),やや有効6例,無効2例であり,明らかに有効と判断された症 例は,55例中47例(85.5%)であった｡2.複合温泉療法は,気管支肺胞洗浄液(BALF)中の細胞成分(リンパ球,好中球,好酸球など)が多い症例,すなわち気道炎症反応がより強い症例により有効であった｡このことは,複合温泉療法が,単純性の(化学伝達物質による)気管支攣縮よりも,気道炎症反応をともなった病態により強く影響を及ぼすことを示している｡3.複合温泉療法による換気機能の改善(1秒量)は,BAL液中の好中球数が少ない症例においてより高度であった｡このことは,BAL液中に高度な好中球増多が見られる症例に対しては,より長期的な複合温泉療法が必要であることを示しているものと考えられた

ステロイド依存性重症難治性喘息における気道反応の特徴

Characteristics of airway response in steroid-dependent intractable asthma (SDIA) were examined in 86 asthma patients (43 with SDIA and 43 with non-SDIA) divided into three age groups: 20-39, 40-59 and 60+ years, by observing cellular composition of bronchoalveolar lavage (BAL) fluid and ventilatory function. 1. The level of serum cortisol was significantly lower in patients with SDIA than in those with non-SDIA in all age groups. 2. The proportion of lymphocytes in BAL fluid was significantly decreased in patients with SDIA compared to results in non-SDIA patients in the age between 40-59, and over 60+ years, While BAL neutrophils were significantly increased in SDIA patients compared to results in non-SDIA patients in the age group over 60 years. 3. Of ventilatory parameters, the values of % FVC, FEV(1.0%), % MMF and % V(25) were significantly lower in SDIA patients over the age of 60 compared with non-SDIA subjects of the same age group. These results show that in SDIA patients the proportion of BAL lymphocytes decreases and the proportion of BAL neutrophils increases with aging, and that ventilatory function in SDIA patients also decreases with aging compared to non-SDIA patients.年齢により3群(20-39才,40-59才,60才以上)に分類された気管支喘息86例(ステロイド依存性重症難治性喘息:SDIA;43例,非SDIA;43例)を対象に,気管支肺胞洗浄液(BALF)中の細胞成分および換気機能よりSDIAにおける気 道反応の特徴を検討した｡1.血清コーチゾ-ル値は,SDIA症例において, 非SDIA症例に比べいずれの年齢層においても有意の低値を示した｡2.BALF中リンパ球頻度は,40-59才および60才以上のSDIA症例において,同年齢の非SDIA症例に比べ有意の低値を示した｡一方,BALF中好中球頻度は,60才以上のSDIA症例で,同年齢層の非SDIA症例に比べ有意に高い値を示 した｡また,BALF中好酸球頻度は,いずれの年齢層においても,SDIAと非SDIA症例の間に有意の差は見られなかった｡3.換気機能では,% FVC, FEV1.0%,% MMF, % V(25)などの換気パラメーターは,60才以上の SDIA症例において,同年齢層の非SDIA症例に比べて有意の低値を示した｡ これらの結果は,40-59才あるいは60才以上のSDIA症例では,非SDIA症例に比べ,BALF中リンパ球頻度の低下,好中球頻度の増加,換気パラメーター値の低下などがより高度に見られることを示している

気管支喘息における血清免疫グロブリン値,末梢血リンパ球数と気管支肺胞洗浄液中の細胞成分との関連

Changes in airway inflammation by glucocorticoids were examined in 26 patients with bronchial asthma, divided into two age groups ; 20-59 and 60+ years, in relation to serum immunoglobulin levels and peripheral lymphocyte count. 1. The levels of IgG, IgA and IgM were significantly lower in patients with steroid-dependent intractable asthma (SDIA) of age over 60 years than in those with non-SDIA of the same age group. In patients between the ages of 20 and 59, only serum IgG level was significantly lower in SDIA than in non-SDIA patients. 2. Peripheral lymphocyte count was significantly decreased in SDIA patients than in non-SDIA patients in age group over 60, but not in age group between 20 and 59. 3. Number of lymphocytes in bronchoalveolar lavage (BAL) fluid was significantly lower and number of BAL neutrophils was significantly higher in SDIA patients than in non-SDIA patients in age group over 60, but not in age group between 20 and 59. These results suggest that levels of IgG, IgA and IgM, and peripheral lymphocyte count were significantly suppressed in SDIA patients of age over 60, accompanied with decrease of BAL lymphocytes and increase of BAL neutrophils.気管支喘息26例(ステロイド依存性重症難治性喘息,SDIA 13例,非SDIA 13例)を対象に,血清免疫グロブリン,IgG,IgAおよびIgM値,および末梢血リンパ球数との関連のもとに,副腎皮質ホルモン長期投与による気道炎症細胞の出現頻度の変化について検討を加えた｡なお,年齢による影響を観察する目的で,SDIAおよび非SDIA各13例を,20-59才と60才以上の2群に分けて,それ ぞれのグループの特徴について検討した｡1.血清IgG,IgAおよびIgM値は,60才以上の症例において,いずれも非SDIA症例に比べ,SDIA症例で有意に低い値を示した｡一方,20-59才の症例群においては,IgG値のみSDIA症例で有意の低下傾向が見られた｡2.末梢血リンパ球数は,60才以上の症例では,SDIA症例で,非SDIA症例に比べ有意の低値を示したが,20-59才の症例では両群間に有意の差は見られなかった｡3.気管支肺胞洗浄(BAL)液中のリンパ球数 は,60才以上のSDIA症例で,非SDIA症例に比べ有意に少なく,また同時にこれらの症例ではBAL液中好中球が有意に多い傾向が観察された｡しかし,20-59才の症例群では,SDIAと非SDIAの間にいずれも有意の差は見られなかっ た｡これらの結果より,60才以上の症例では,20-59才の症例群に比べ,副腎皮質ホルモンの長期投与により,血清IgG,IgAおよびIgM値,末梢血リンパ球数の減少とともに,BAL液中のリンパ球減少,好中球増加をきたしやすいことが明らかにされた

気管支喘息における末梢血白血球および気管支肺胞洗浄液中の細胞からのヒスタミンおよびロイコトリエンC(4),B(4)遊離と気道過敏性

The proportions of cells in bronchoalveolar lavage (BAL) fluid, the release of histamine, leukotrienes C(4) and B(4) from leucocytes and BAL cells, and bronchial reactivity to methacholine were examined in 40 patients with asthma in relation to patient age. 1. The proportions of lymphocytes and neutrophils in BAL fluid were higher in older patients over age 60 than in younger patients between 20 and 49. The proportions of eosinophils and basophilic cells in BAL fluid were higher in younger patients than in older patients, and the difference in the proportion of BAL basophilic cells was significant between the two groups (p<0.05). 2. The release of histamine from BAL cells was significantly higher in younger patients than in older patients (p<0.001). The release of LTC(4) from BAL cells was higher in older patients compared to younger patients. 3. Bronchial reactivity to methacholine was higher in younger patients than in older patients. The number of patients reactive to low concentration of methacholine (390μg/mℓ or less) was larger in younger patients (12/16 ; 75.0%) than in older patients (5/14 ; 35.7%). These results suggest that bronchial hyperresponsiveness changes with aging, accompanied by changes in the release of chemical mediators from BAL cells and in the proportion of BAL cells.気管支喘息を対象に,気管支肺胞洗浄(BAL)液中の細胞の出現頻度,末梢血白血球およびBAL細胞からのヒスタミン,ロイコトリエンC(4),B(4)遊離,気道過敏性などについて,患者年齢との関連のもとに検討を加えた｡1.BAL液中のリンパ球および好中球頻度は,60才以上の老齢症例で,20-49才の若青年症例に比べやや高い傾向が見られたが,推計学的には有意の差は見られなかった｡BAL液中の好酸球,好塩基細胞の頻度は,若青年症例で,老年症例に比べて高く,特に好塩基性細胞の頻度には両症例群間に有意の差が見られ(P<0.05)｡ 2.BAL細胞からのヒスタミン遊離は,若青年症例で,老年症例に比べ有意に多い傾向が見られた(P<0.001)｡一方,BAL細胞からのロイコトリエンC(4)遊離は,若青年症例に比べ,老年症例で多い傾向が見られたが,両症例群間に有意の差は見られなかった｡3.メサコリンに対する気道の反応性は,全般的に若青年症例で,老年症例に比べより強い傾向を示した｡そして,390μg/mℓまたはそれ以下の低濃度のメサコリンに反応を示す症例は,若青年症例では16例中12例(75.0%),老年症例では14例中5例(35.7%)であった｡以上の結果より,気道過敏性は,BAL細胞からの化学伝達物質遊離の変化やBAL細胞の頻度の変化とともに,加齢の影響を受けることが明らかとなった