Publications by authors named "Iwasaka T"

The use of a monoclonal antibody (MAb) to bromodeoxyuridine (BrdU) to identify S-phase cells was examined in 30 cervical biopsy specimens and 30 cervical smears from 18 patients with cervical neoplasia. Each patient received a local injection of 300 mg to 500 mg of BrdU into the cervix, at the time of endocervical laser conization, to label S-phase cells in neoplastic tissue. Labeled cells in normal and neoplastic tissues were detected in biopsy specimens or smears by indirect immunoperoxidase staining using the anti-BrdU MAb.

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Eight patients with cervical intraepithelial neoplasia (CIN) were administered perilesional injections of human recombinant interferon gamma (IFN-gamma), and the response was evaluated by colposcopy and exfoliative cytology and then by histopathology. In all patients, colposcopic and cytologic findings improved after two to four injections of IFN-gamma and the cytologic findings reverted to normal in five of these eight patients. All five were free of dysplastic lesions.

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To evaluate the effect of propranolol on diastolic time (DT) during uninterrupted upright exercise, 11 men with normal coronary arteries receiving oral propranolol and 10 men with coronary artery disease (CAD) were studied by ear densitography. The DT-heart rate (HR) regression equation during exercise obtained from persons without CAD receiving propranolol was DT = e(6.923-0.

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To define the role and clinical value of thallium-201 myocardial scintigraphy in ischemic heart disease, 967 consecutive patients referred to our laboratory since 1985 were studied. The purpose of scintigraphy has changed from diagnosing myocardial ischemia to assessing myocardial viability with the progress of coronary angioplasty. At present, thallium-201 myocardial scintigraphy has become an indispensable noninvasive method for the management of patients with ischemic heart disease.

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To elucidate the clinical characteristics associated with pericardial effusion in the early phase of myocardial infarction, 330 patients with acute Q wave infarction were studied. According to echocardiography, 83 patients had pericardial effusion on the third day of hospitalization, and careful auscultation revealed that a pericardial rub was absent in 45 patients and was present in 38 patients. Based on seven clinical variables, multivariate analysis was performed to determine the important variables related to the occurrence of pericardial effusion with and without pericardial rub.

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One hundred twenty patients with cervical neoplasia were treated by conization, 78 with a carbon dioxide laser and 42 with a cold knife. Bleeding during the conization was 82.5 +/- 91.

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The interrelations of oxygen delivery (DO2), oxygen consumption (VO2) and hemoglobin-oxygen affinity assessed by P50 were investigated in 43 patients with acute myocardial infarction. As DO2 declined due to low cardiac output, a significant decrease in VO2 (r = 0.75, p less than 0.

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To elucidate the pathophysiological role of diabetes mellitus in determining the left ventricular regional function of the noninfarcted area, 55 patients with acute Q wave anterior myocardial infarction (MI) were studied. The regional ejection fraction of the noninfarcted area was obtained by radionuclide angiocardiography and was used to estimate the left ventricular regional function of the noninfarcted area. Multiple regression analysis was performed to determine the important variables contributing to the regional ejection fraction based on 10 clinical variables: age, sex, QRS score, diabetes mellitus, hypertension, smoking, postinfarction angina, body mass index, serum cholesterol, and coronary atherosclerosis.

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To evaluate DT during a low-level exercise test, the relation between DT and heart rate was studied by ear densitography in the late phase of hospitalization for acute MI. None of the patients had an ischemic electrocardiographic response. The patients were divided into two groups: group 1 was comprised of nine patients with a resting left ventricular end-diastolic volume of 140 ml or more, and group 2 was comprised of nine patients with a left ventricular end-diastolic volume less than 140 ml.

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Coenzyme Q10 (CoQ10) is an essential component of the mitochondrial membrane and plays an important role in the maintenance of normal cardiac function. To evaluate the effects of ocular timolol on the cardiovascular system and determine the protective effect of CoQ10, 16 patients with glaucoma were studied using impedance cardiography. Following instillation of 1 mg timolol maleate in each eye, heart rate (HR) and stroke index (SI) decreased, and total peripheral resistance index (TPRI) increased significantly.

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Eighteen patients with advanced or recurrent carcinoma of the cervix were treated with a combination of peplomycin, vincristine, mitomycin-C, and cisplatin (POMP). Ten of the 16 evaluable patients (63%) responded, including 4 with a complete response. Median duration of the response was 7 months.

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The numbers of Langerhans cells and lysozyme-positive macrophages were assessed quantitatively in normal ectocervical epithelium, cervical intraepithelial neoplasia (CIN), microinvasive squamous cell carcinoma (MICA), clinical invasive squamous cell carcinoma (CICA), and koilocytotic atypia using the avidin-biotin-peroxidase complex (ABC) method. The distribution of Langerhans cells was different from that of lysozyme-positive macrophages in that the former were intermingled with the cervical lesion, while the latter were present mainly surrounding the cervical lesion and/or on the edge of the cervical lesion. The numbers of Langerhans cells and lysozyme-positive macrophages in CIN were significantly larger than those in normal ectocervical epithelium and significantly smaller than those in invasive squamous cell carcinoma (MICA + CICA).

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To determine the factors associated with persistent and transient fascicular blocks, 144 patients with Q-wave anterior wall acute myocardial infarction (AMI) were studied. Thirty-three patients had new onset of fascicular block considered to be a consequence of AMI. Multivariate analysis using 16 clinical variables revealed that the number of asynergic segments, serum potassium level and pericardial rub were significant factors related to the occurrence of fascicular block.

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Tumorigenic transformation was produced by combining herpes simplex virus type 2 and human papillomavirus type 16 or 18 deoxyribonucleic acid (each is associated with cervical carcinoma). Recombinant human papillomavirus type 16 and 18 deoxyribonucleic acid each containing a head-to-tail dimer of the full-length human papillomavirus respective genomes, induced morphologic transformation in an immortalized cell line (AE), obtained by transfection of Syrian hamster embryo cells with immortalizing sequences of herpes simplex virus type 2 deoxyribonucleic acid. These transformed cells were tumorigenic in nude mice.

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The antiemetic efficacy of high-dose metoclopramide (MCP), diphenhydramine (DPH), methylprednisolone (MPL), and diazepam (DZP) was investigated in 40 gynecologic cancer patients for a total of 98 chemotherapy courses, treated with cisplatin (50 mg/m2). With MPL (500 mg i.v.

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The role of catecholamine in atrial natriuretic peptide (ANP) secretion and its secretory mechanism in normal humans is not well defined; therefore, we studied the relationship among ANP, catecholamine, and atrial pressures in 25 patients without cardiovascular disease and in 35 patients with chronic congestive heart failure (CHF, 20 in mitral valve disease and 15 in dilated cardiomyopathy). In patients without cardiovascular disease, right atrial pressure at rest showed a positive correlation (r = 0.80, p less than 0.

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To elucidate the genesis and effect of fascicular block, 131 patients with acute Q-wave anteroseptal infarction were studied. Thirty-seven patients had new onset of fascicular block in the coronary care unit. The hospital mortality rate was 16%.

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The purpose of this study was (1) to assess the hemodynamic changes during daily activities by 24-hour continuous ear-densitographic monitoring (Holter EDG) in 14 patients with acute myocardial infarction (MI), and (2) to define the changes in left ventricular performance during and after acute upright posture in 35 patients with old MI. Ninety-seven percent of the daily activities could be reliably measured by ambulatory monitoring of systolic time intervals (STI) and the most significant change in STI was observed during defecation. The ratio of preejection period to left ventricular ejection time (PEP/LVET) increased significantly during defecation (0.

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A case of endometrial adenocarcinoma in a 62-year-old woman with malignant pericardial effusion is presented. The patient underwent a total abdominal hysterectomy, bilateral salpingo-oophorectomy, pelvic node dissection, and paraaortic node biopsy. Postoperatively, she was placed on a combination chemotherapy regimen of cisplatin, doxorubicin, and cyclophosphamide.

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