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Biomedical subjects

M Minamitani

Publications and source records attributed to M Minamitani.

At least 37 records · Page 2Linked to original sources
PubMed1989

Seroepidemiology of pertussis in the Japanese population.

To ascertain just how widely Bordetella pertussis infection occurs in Japan, we assessed the immune level against pertussis in various age-groups in the Japanese population. Using sera mainly obtained from 6- to 75-year old subjects who visited the Tokyo Metropolitan Komagome Hospital, we determined the levels of bacterial agglutinins to Bordetella pertussis, of anti-filamentous hemagglutinin and of anti-pertussis toxin. The bacterial agglutinin titers in the older age-groups seemed to be slightly lower than those in the younger age-groups, but no obvious differences between the older and the younger age-groups were found in the levels of anti-filamentous hemagglutinin and anti-pertussis toxin. The older subjects were assumed to acquire these antibodies through clinical or subclinical natural pertussis infections because, prior to 1951, mass vaccination against pertussis was not practice in Japan. Our results reasonably indicate that Bordetella pertussis widely infests Japan, so that vaccination is inevitably warranted to prevent pertussis epidemics and to lower the pertussis case rates.

Adolescent↗
PubMed1989

Comparative restriction endonuclease analysis of varicella-zoster virus clinical isolates.

The DNAs of 67 isolates of varicella-zoster virus (VZV) obtained from 31 individuals were compared by restriction endonuclease analysis using BamHI, EcoRI, PstI and SmaI. All of the epidemiologically unrelated 26 isolates could be differentiated using SmaI and another one or two enzymes. However, the DNA cleavage profiles of multiple VZV isolates from the same patient and the isolates from a group of patients who were infected with VZV from the same source were found to be identical to each other, as reported previously. No patients were found who were simultaneously infected with different VZV strains. Moreover, VZV showed no change in DNA fragment profiles after serial passages not only through human embryonic lung cells but also through patients.

Adult↗
PubMed1989

[A clinical evaluation of cefpodoxime proxetil in pediatrics].

Children with acute infections were treated with cefpodoxime proxetil (CPDX-PR, CS-807), a new oral cephalosporin. 1. A girl of 4 years old, weighing 17 kg, and another girl of 12 years old, weighing 33 kg, were administered orally each 3 mg/kg of CPDX-PR. Blood levels of CPDX reached peaks of 1.39 and 2.26 micrograms/ml at 4 hours-post-dose, and T1/2's were 2.09 and 2.63 hours, respectively. Cumulative urinary recovery rates for 8 hours were 57.3 and 80.9%, respectively. 2. A total of 30 patients was treated with CPDX-PR. These patients included 10 with acute tonsillitis, 6 with acute bronchitis, 5 with bronchopneumonia, 2 with scarlet fever and 2 with urinary tract infections, and one each with acute pneumonia, acute otitis media, acute otitis media plus sweat gland abscess, staphylococcal scalded skin syndrome and acute lymphadenitis. The treatment was effective in 27 cases out of 29 (except one with an unknown response) with a clinical efficacy rate of 93.1%. 3. Bacteriological responses to CPDX-PR were as follows; eradication of pathogen in 7, and unknown in 2 out of 9 cases from whom pathogens had been isolated prior to the treatment. 4. As a side effect, diarrhea was observed in 1 patient, but it was possible to continue the treatment. With regard to laboratory tests, a slight elevation of GOT and slight elevations of GOT and GPT were found in 1 case each.

Absorption↗
PubMed1989

[A clinical study on cefteram pivoxil in the field of pediatrics].

Cefteram pivoxil (CFTM-PI, T-2588), a new oral cephem antibiotic of ester type, was evaluated for its safety, efficacy and pharmacokinetics. 1. One child, 4 years of age (18 kg body weight), was administered orally 3 mg/kg after meal. The peak serum level of CFTM was 0.78 microgram/ml after 2 hours, and cumulative urinary excretion rate during the first 6 hours was 15.0%. 2. Clinical studies on CFTM-PI were carried out in 17 pediatric patients; 1 with acute pharyngitis, 2 with acute tonsillitis, 1 each with pertussis, acute bronchitis, 2 with broncho-pneumonia, 4 with scarlatina, 3 with acute otitis media, and 1 each with lymphadenitis, acrobystitis and urinary tract infection. Clinical responses were excellent in 9, good in 6, fair in 1, poor in 1, and the overall clinical efficacy rate was 88.2%. 3. Bacteriological efficacy was investigated with 10 strains of 5 species (Streptococcus pyogenes 4, Streptococcus pneumoniae 2, Haemophilus influenzae 2, Enterococcus and Bacteroides 1) isolated from 9 patients. All strains were eradicated. 4. As to adverse reactions, mild diarrhea was observed in 1 patient. But therapy had to be continued without procedure and the diarrhea disappeared after 6 days. No adverse hematological, renal or hepatic effects were noted.

Bacterial Infections↗
PubMed1988

[Clinical study of rokitamycin dry syrup in pediatrics].

A total of 22 patients with acute pediatric infections was treated with rokitamycin (TMS-19-Q, RKM) dry syrup, a new macrolide antibiotic developed by Toyo Jozo Co., Ltd., Ohhito, Japan, to investigate its clinical efficacy. 1. A girl of an age 4 years 2 months (weighing 16.5 kg) was administered orally 10 mg/kg of RKM, and a boy of an age 8 years 7 months (weighing 24.5 kg), 15 mg/kg, and blood concentrations of RKM in these subjects were measured to investigate its absorption and excretion. Blood concentrations of the drug reached a peak of 0.84 microgram/ml in an hour after the administration in the girl, 0.72 microgram/ml in 30 minutes in the boy, with T1/2 of 0.86 and 1.82 hours, respectively. Their 6-hour cumulative urinary recovery rates were 2.79 and 2.13%, respectively. 2. A total of 20 patients was treated with RKM dry syrup. These patients included 3 with acute pharyngitis, one with acute tonsillitis, 4 with hemolytic streptococcal infections, 7 with acute bronchitis, 2 with pneumonia, another 2 with pertussis, and one with Campylobacter enteritis. The treatment was effective in 18 of them with a clinical efficacy of 90.0%. 3. Bacteriological responses to RKM dry syrup were as follows: eradication of pathogens in 5, pathogens decreased in 3, and no changes were observed in 3 of 12 patients from whom pathogens had been isolated prior to the treatment, thus the eradication rate was 45.5% with the exception of 1 patient whose bacteriological response was unknown.(ABSTRACT TRUNCATED AT 250 WORDS)

Administration, Oral↗
PubMed1986

[Clinical study on imipenem/cilastatin sodium in the field of pediatrics].

Imipenem/cilastatin sodium (MK-0787/MK-0791) was administered to pediatric patients with infections, and the following results were obtained. Pharmacokinetic study Two children, 11 years of age (38 kg body weight) and 3 years of age (15.5 kg body weight), were administered by 30 minutes intravenous drip infusion a single dose of 500 mg/500 mg (13.2 mg/13.2 mg per kg) and 250 mg/250 mg (16.1 mg/16.1 mg per kg) of MK-0787/MK-0791, respectively. Serum concentrations of MK-0787 reached their peaks at the end of drip infusion at a value of 56.33 micrograms/ml and 55.98 micrograms/ml, respectively. Concentrations of the drug decreased as the time after the administration increased, and they reached 0.14 microgram/ml and 0.12 microgram/ml, respectively in the older and the younger children at 6 hours after the administration. Half-lives (T 1/2) of the drug in serum were calculated to be 1.21 hours and 1.04 hours, respectively. The concentration of the drug in cerebrospinal fluid for the 11 years old was 0.52 microgram/ml 2 hours after the drip infusion and the serum concentration at the time was 4.02 micrograms/ml. Peak serum concentrations of MK-0791 in the 2 children were 53.73 micrograms/ml and 22.99 micrograms/ml, respectively, at the end of drip infusion. After 1 hour, the serum concentration of the drug decreased to 10.54 micrograms/ml in 1 case and not detectable in the other case. Urinary recovery rates of MK-0787 in 6 hours after the drip infusion was 82.9% and 63.6% in the 2 children and those of MK-0791 were 57.9% and 74.6%. Clinical study Clinical studies on MK-0787/MK-0791 were carried out in 6 pediatric patients; 1 each with femoral cellulitis, sepsis suspected, salmonellosis, acute tonsillitis, bronchopneumonia and streptococcosis. Lengths of treatment were 2 2/3-4 days for 5 cases and 6 days for 1 case. The patients were treated by 30-60 minutes intravenous drip infusions twice a day for 1 case, and 3 times a day for 5 cases at daily doses of 54.5-66.7 mg/kg. The treatment was effective in all cases, with 3 cases judged excellent and 3 cases good. The safety of the drug was studied in 7 patients. No side effects nor clinically abnormal values were observed in any cases.

Bacterial Infections↗
PubMed1985

[Experimental and clinical studies of BRL 25000 (clavulanic acid-amoxicillin) granules in the field of pediatrics].

BRL 25000 granules, a formulation consisting of amoxicillin (AMPC) and clavulanic acid (CVA), was evaluated in the field of pediatrics. In a pharmacokinetic study, serum concentrations were determined in a patient after oral administration of BRL 25000 granules in the non-fasting state at a dose of 11.76 mg/kg. The serum levels of amoxicillin (AMPC) and clavulanic acid (CVA) 1 hour after administration were 7.76 micrograms/ml and 6.64 micrograms/ml, with biological half-lives of 0.86 hour and 0.88 hour respectively. The serum concentration profile at a dose of 31.58 mg/kg showed almost the same tendency as at 11.76 mg/kg, although the peak level and biological half-life of the serum concentrations were not obtained. These serum levels and their peak levels were considered reasonable compared with those obtained in adults at similar dose levels. In clinical studies, 34 patients were evaluated including 8 patients with acute pharyngitis or acute tonsillitis, 1 patient with acute bronchitis, 1 patient with bronchopneumonia, 23 patients with scarlet fever and 1 patient with pertussis. BRL 25000 granules were administered orally 3-4 times per day for 4-8 days to 2 patients at doses of 20 approximately less than 30 mg/kg/day, to 18 patients at doses of 30 approximately less than 40 mg/kg/day, to 11 patients at doses of 40 less than approximately 50 mg/kg/day, and to 3 patients at doses of 50-60 mg/kg/day. The clinical response was assessed excellent in 13 cases and good in 21 cases giving an overall clinical efficacy rate of 100% (34/34). The causative organisms were isolated in 17 cases and included 12 strains of Streptococcus group A, 2 S. pneumoniae, 3 H. influenzae and 1 H. parainfluenzae.(ABSTRACT TRUNCATED AT 250 WORDS)

Administration, Oral↗
PubMed1984

[Clinical study on sulbactam/cefoperazone in the field of pediatrics].

Sulbactam/cefoperazone (SBT/CPZ) was used in pediatric patients with acute infections, and the following results were obtained. SBT/CPZ was administered to 18 pediatric patients with acute infections. Out of them, 14 patients, i.e., 3 with acute tonsillitis, 1 with acute laryngitis, 1 with acute bronchitis, 4 with acute pneumonia, 4 with bronchopneumonia, 1 with pyothorax, were adopted for the evaluation, and the other 4 were excluded because they were judged inadequate for clinical efficacy evaluation. The clinical efficacy of SBT/CPZ was assessed as excellent in 4, good in 9 and fair in 1. The effective rate was 92.9%. In 6 cases causative organisms were detected, i.e., Haemophilus influenzae in 3, Klebsiella in 1 and Staphylococcus aureus in 2 cases. Eradication of these organisms was confirmed in all cases except for 1 patient with pyothorax caused by S. aureus. The doses used in 12 out of the evaluated 14 cases ranged from 58.4 to 80 mg/kg/day, 84.1 mg/kg/day was used in 1 case and 101.4 mg/kg/day was used in 1 case with pyothorax. Patients with severe infections were generally given large doses. The frequency of administration was 3 times per day except 1 case, and intravenous drip infusion was used in all cases. The duration of treatment was 2- less than 3 days for 7 cases, 3-5 days for 6 cases and 9 days for 1 case (pyothorax). No clinical side effects were observed in any case. In laboratory examinations, a slight elevation of GOT was observed in 1 case, but no abnormal findings in the other cases. From the above results, SBT/CPZ was considered to be a highly useful drug in the treatment of pediatric infections.

Acute Disease↗
PubMed1984

[Clinical evaluation of ceftriaxone in the pediatric field].

Ceftriaxone (Ro 13-9904, CTRX), developed by F. Hoffmann-La Roche Ltd. in Switzerland, was used for the pediatric infections and the following results were obtained. The mean blood level of CTRX in 2 children after a 60-minute intravenous drip infusion with 20 mg/kg was 58.6 micrograms/ml at 30 minutes, 75.0 micrograms/ml at 1 hour, 39.85 micrograms/ml at 2 hours, 27.74 micrograms/ml at 4 hours, 20.71 micrograms/ml at 6 hours, 11.72 micrograms/ml at 12 hours and 3.91 micrograms/ml at 24 hours while the half-life time was 5.9 hours in one child and 7.6 hours in the other. CTRX was used in 22 children with acute infections consisting of 3 with acute pharyngeal tonsillitis, 4 with acute bronchitis, 8 with bronchopneumonia, 6 with infections of skin soft tissue and 1 with salmonellosis. The results were excellent in 5 cases and good in 17, indicating an efficacy rate of 100%. Out of 10 cases where the causative strains were detected, 4 cases were followed about the activities of the respective bacteria, i.e., H. influenzae, Streptococcus group A, S. aureus and Salmonella group B, all of which were eradicated after the end of administration. The daily dose of CTRX ranged from 30 to 50 mg/kg and generally a larger dose was used for serious infections. CTRX was administered twice daily in 20 out of 22 cases, by an intravenous injection in 4 and an intravenous drip infusion in 18, for 2 to 4 days in 16 and 5 to 8 1/2 days in 6. No clinical adverse reactions were observed while the laboratory test found a slight elevation of GOT in one and that of GOT and GPT in another. From the above results, CTRX was judged to be a highly useful drug for treatment of pediatric infections.

Acute Disease↗
PubMed1984

[Clinical study on ceftazidime in the field of pediatrics].

Ceftazidime (CAZ), developed by Glaxo U.K., was used in pediatric patients with acute infections, and the following results were obtained. The mean blood concentrations of CAZ in 2 children were 142, 70.3, 46.9, 35.7, 16.2, 5.82 and 2.36 micrograms/ml at 5, 15, 30 minutes, 1, 2, 4 and 6 hours, respectively, after start of 5 minutes' intravenous injection of 20 mg/kg, with the half-life of 1.25 hours. CAZ was administered to 19 pediatric patients with acute infections. Out of them, 15 patients, i.e., 3 with acute tonsillitis, 1 with acute bronchitis, 5 with bronchopneumonia, 2 with pertussis accompanying pneumonia, 2 with Salmonella enteritis, 1 with impetigo staphylogenes and 1 with subdural abscess, were adopted for the evaluation, and the other 4 were excluded from the evaluation because of inadequate indications. The efficacy rate in these 15 cases was 93.3%. The doses used in 14 out of the evaluated 15 cases ranged from 31 to 50 mg/kg/day, the frequency of dosing was twice daily in 8 cases and 3 times daily in 7 cases. One shot intravenous injection was used in 6 cases, intravenous drip infusion in 8, and combination of these, in 1 case. The duration of treatment was 2 days in 3 cases, 3 days in 3, 4 days in 4, and 5 days in 3 cases. Patients with severe infections were generally given large doses for long-term. No clinical adverse event was observed in any case. In laboratory examinations, slight elevation of S-GPT alone was observed in 1 case. From the above results, CAZ was considered to be a highly useful drug in the field of pediatrics.

Adolescent↗