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Biomedical subjects

Mitsunori Hino

Publications and source records attributed to Mitsunori Hino.

9 recordsLinked to original sources

Metastatic thoracic lymph node carcinoma of unknown origin on which we performed two kinds of immunohistochemical examinations.

Metastatic cancers of the thoracic lymph nodes without primary sites are rare. Such cancers are difficult for clinicians to manage as identifying the primary sites is difficult in using routine histologic examinations alone. We searched for the site of the primary lesion using immunohistochemical exploration of cytokeratin (CK) and thyroid transcription factors 1 (TTF-1), and 2-[18F] and fluorodeoxyglucose positron emission tomography (FDG PET) in a patient with cancer of the hilar lymph node without any known primary site. To our knowledge, there are no previous similar reports. A 45-year-old man presenting with a tumor in the right hilar region, underwent surgical resection of the tumor, resulting in a diagnosis of metastatic cancer of the bronchopulmonary lymph nodes. An immunohistochemical examination revealed the neoplastic lesion to be positive for CK7, negative for CK20, and negative for TTF-1. Repeated searches to identify the site of the primary lesion by FDG PET over the 35 months since operation have failed to locate a primary site.

Adenocarcinoma↗

Influence of daily low-dose 14-membered-ring macrolide therapy on Helicobacter pylori infection in patients with chronic inflammatory disease of the airway.

Our aim was to evaluate the effects of eradication and the incidence of secondary resistance by long-term low-dose daily 14-membered-ring macrolide therapy on Helicobacter pylori ( H. pylori) infection in patients with chronic lower respiratory tract inflammatory disease. In a retrospective analysis, we studied the seroprevalence of H. pylori IgG in 90 patients with inflammation of the lower respiratory tract (68 had been treated with macrolide and 22 served as controls). Then, in a prospective analysis, we evaluated the eradication effect of macrolide therapy by the decline of IgG values and the (13)C-urea breath test. Only long-term macrolide use significantly affected the seroprevalence of H. pylori IgG. However, macrolide therapy did not reduce the H. pylori IgG values in 24 patients and did not eradicate H. pylori in (13)C-urea breath tests. Chemosensitivity testing was performed on three H. pylori strains obtained by gastric biopsy from patients in whom the disease could not be eradicated. Only one strain demonstrated a resistant character. Daily long-term low-dose 14-membered-ring macrolide therapy for patients with lower respiratory inflammatory disease may not be sufficient to eradicate H. pylori, but some strains do not acquire a resistant nature.

Adolescent↗

Human pulmonary dirofilariasis in a patient whose clinical condition altered during follow-up.

Pulmonary dirofilariasis is a rare disease. We have experienced a case which developed pleural effusion while being followed, rendering it difficult to establish the diagnosis. The patient, a 53-year-old woman, had previously undergone two operations; one for uterine cancer and another for breast cancer. She developed a cough in February 2002, and chest computed tomography (CT) scans disclosed a nodular mass in the right lung. A biopsy revealed a fibrous nodule with macrophage aggregation. Pleural effusion was demonstrated on chest CT scans performed in May. As the possibility of malignant tumor could not be ruled out, an operation was undertaken. The nodular lesion showed marked coagulation necrosis, and dead parasites were noted in the vascular lumen. The parasites had the characteristic morphological features of Dirofilaria immitis. Immunological studies produced a positive test result for the anti-dirofilaria immitis antibody; hence a diagnosis of pulmonary dirofilariasis was made.

Animals↗

Effect of the proteolytic enzyme serrapeptase in patients with chronic airway disease.

OBJECTIVES: The proteolytic enzyme serrapeptase (SER) is widely used in clinical practice in Japan. We investigated the effect of SER on sputum properties and symptoms in patients with chronic airway diseases. METHODS: This study was an open-labelled trial with a non-treatment control group. Patients were randomly assigned to oral treatment with (n = 15) and without (n = 14) SER 30 mg/day for 4 weeks. Patients collected sputum samples for about 4 h in the morning on the day the trial began and 4 weeks later. We measured the amount of sputum by weighing. Part of each sputum sample was weighed and then completely dried and reweighed. The percentage solid component, viscosity and elasticity of the sputum were measured. Mucociliary transportability index was measured using ciliated bovine trachea ex vivo. Sputum smears were also prepared to count sputum neutrophils. Patients' symptoms were assessed by a questionnaire that used a visual analogue scale. RESULTS: After 4 weeks of SER treatment, sputum weight in the morning, percentage solid component, viscosity and elasticity of sputum, sputum neutrophil count, frequency of coughing and frequency of expectoration significantly decreased. The mean mucociliary transportability index increased from 13.3 +/- 1.8 to 24.4 +/- 2.5 (P = 0.0103). CONCLUSIONS: SER may exert a beneficial effect on mucus clearance by reducing neutrophil numbers and altering the viscoelasticity of sputum in patients with chronic airway diseases.

Adult↗

Phase I studies of nogitecan hydrochloride for Japanese.

BACKGROUND: SmithKline Beecham synthesized camptothecin analogs and identified nogitecan hydrochloride (topotecan) with a broad spectrum of antitumor activity and less toxicity than camptothecin. Because preclinical and overseas clinical data indicated the antitumor effect of nogitecan hydrochloride with a 5-day repeat-dose schedule, we carried out phase I studies in Japan to determine the maximum tolerated dose (MTD), pharmacokinetics, and antitumor effect of nogitecan hydrochloride. METHODS: Phase I studies of nogitecan hydrochloride given by single and 5-day repeat dosing were carried out in patients with various solid tumors at 15 medical institutions in Japan. Pharmacokinetic evaluations were performed for both single and 5-day repeated dosing. RESULTS: The dose-limiting factor (DLF) was reversible leucopenia, and the maximum tolerated dose (MTD) was higher than 22.5 mg/m2 in the single-dose study. In the 5-day repeat-dose study, the DLF was also reversible leucopenia, and the MTD was estimated to be 1.5 mg/m2 per day. The plasma concentration of nogitecan hydrochloride increased with increasing dose, and the half-life after single dosing ranged from 3 to 5h. There was no evidence of accumulation or delayed excretion during 5-day repeat dosing. CONCLUSION: Based on these results and the finding that there were responders among patients treated at 1.5 mg/m2 per day by 5-day repeat dosing in overseas studies, 5-day repeat dosing of 1.2mg/m2 per day, one dose level lower than the MTD, was selected for phase II studies in Japan.

Adult↗

[The frequency profiles of size of two-step tuberculin skin tests with histories of BCG vaccinations and tuberculin tests among hospital employees].

In 1998, Prevention Committee of the Japanese Society for Tuberculosis announced guidelines for dealing with nosocomial tuberculosis infections. These guidelines recommended the two-step tuberculin tests (TST) as baseline data for each medical employee when they started to work. If accurate records of previous TSTs are available in addition to baseline data, they are useful to evaluate the presence of tuberculosis infection when they started to work. We therefore studied the frequency profile of size of TST among medical employees in INBA-HITEC Medical Center and discussed methods to improve investigative measures for tuberculosis infection, and prior to skin testing we asked self-reporting questionnaires regarding history of previous BCG vaccinations and TSTs. We expected that their records of previous TSTs were accurately preserved, however, records of previous TSTs reported by medical employees were found to be inaccurate. From two-step TSTs results, the magnitude of booster phenomenon was defined by diameter of erythema and induration. Results demonstrated that the increase of induration size was larger in subjects > or = 41-years-old than in subjects < 41-years-old. Regarding booster phenomenon, no statistically significant differences were detected according to type of duty post. Many subjects with size of TST erythema > or = 30 mm on the first test showed increase erythema > or = 10 mm on the second test. We therefore suggest that the second test be made for those showing reaction size > or = 30 mm on the first test.

Adult↗

[Paclitaxel].

Explore the source record for details and available documents.

Antibodies, Monoclonal↗

Weekly administration of irinotecan (CPT-11) plus cisplatin for non-small cell lung cancer.

BACKGROUND: Weekly administration of irinotecan plus cisplatin was evaluated for untreated patients with non-small cell lung cancer (NSCLC). PATIENTS AND METHODS: Sixty mg/m(2) of irinotecan plus 30 mg/m(2) of cisplatin were administered on days 1, 8 and 15 every 4 weeks. Patients with no evidence of disease progression were treated with at least two cycles (8 weeks). Of the 39 patients, 29 were provided an antidiarrheal program consisting of sodium bicarbonate and magnesium oxide. RESULTS: There were 13 partial responses and an overall response rate of 33.3% [95% CI: 20%-50%]. The median time to progression and survival were 64 days and 12.8 months, respectively. Grade 4 neutropenia occurred in 15.4% of the patients, and Grade 3 and 4 diarrhea was observed in 12.8% and 2.6%, respectively. The incidence of leukopenia of grade 3-4 was significantly lower in patients provided with the antidiarrheal program due to lack of decrease in the lymphocyte count. CONCLUSION: This phase II study indicated that weekly irinotecan plus cisplatin administration was a promising treatment for untreated NSCLC.

Adult↗