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Biomedical subjects

T Shimabukuro

Publications and source records attributed to T Shimabukuro.

48 records · Page 3Linked to original sources
PubMed1989

[Flow cytometric bromodeoxyuridine (BrdU)/DNA analysis--study with urogenital tumors].

We performed the simultaneous flow cytometric bromodeoxyuridine (BrdU)/DNA analysis in combination with in vitro BrdU labeling method using seven human urogenital tumors. The DNA content and incorporated BrdU content of each tumor cell was analyzed quantitatively using this flow cytometric method. The cell kinetics of each cell line of heterogeneous tumor could be analyzed by this combined method. In the near future, by establishing a procedure decreasing non-specific staining of cells, the development of this flow cytometric two-color analysis in clinical fields is expected.

Aged↗
PubMed1989

[Cell kinetic study of urogenital tumors utilizing in vitro BrdU-labelling method and anti-BrdU monoclonal antibody].

With the aim to apply a rapid analytic method of cell kinetics using in vitro BrdU labelling and anti-BrdU monoclonal antibody to the clinical fields, we investigated the cell kinetics of 20 urogenital malignant tumors. The DNA synthesizing cells which take up BrdU in its nuclei can be detected so clearly, since the labelling index (LI) is easily identified. The correlations between LI and age and with histological grade and stage of 14 transitional cell cancers of urinary tract were investigated. There was no correlation between LI and age. The LI of high grade groups (G2 & G3) were significantly higher than that of the low grade group (G1) (p less than 0.05). Also between LI of pT1 group and pT3 group, there was a statistical significance (p less than 0.05) and generally LI tended to increase according to stage progression. Therefore, the cytokinetic data obtained from the before mentioned method can be utilized as a useful marker for measuring malignant potentials of each tumor.

Aged↗
PubMed1988

Effects of indeloxazine, (+)-2-[inden-7-yloxy)methyl]morpholine hydrochloride on cerebrospinal fluid monoamine metabolites.

Effects of indeloxazine, a new compound which has been though to block reuptake of serotonin and noradrenaline, on cerebrospinal fluid monoamine metabolites were evaluated in 11 patients with dementia. Treatment with 90 mg/day of indeloxazine for 6-8 weeks resulted in significant reduction in methoxyhydroxyphenylen glycol and 5-hydroxyindoleacetic acid in these patients. These findings are consistent with results reported in experimental animals. The mode of action with respect to changes in monoamine metabolites and therapeutic implications of this compound are discussed.

Adult↗
PubMed1988

[Application of simultaneous flow cytometric bromodeoxyuridine (BrdU)/DNA analysis. 1. Basic and technical studies].

The precise in vitro and in vivo BrdU labeling methods and the optimal combination of HCl concentration, treatment time and temperature for DNA denaturation for use in simultaneous flow cytometric BrdU/DNA analysis were investigated. An EPICS C Cell Sorter with computer analyser was used. 1) For precise labeling of exponentially growing MBT-2 cells the cell should be exposed to 10 microM BrdU for 30 min. 2) For optimal labeling of mouse subcutaneous MBT-2 tumor cells 40 micrograms of BrdU per gram should be injected intraperitoneally for 1 hour. 3) The procedure yielding the most quantitative results for DNA denaturation was treatment of the cells with 4N HCl for 20 min at 20 degrees C. Under these conditions, reliable data were always obtained. In the future, this flow cytometric two-color analysis will be applied to clinical fields and further development is expected.

Animals↗
PubMed1988

[Application of simultaneous flow cytometric bromodeoxyuridine (BrdU)/DNA analysis. 2. Basic study to apply as a chemosensitivity test].

We developed a new method to rapidly measure the effectiveness of certain anticancer drugs by analyzing their effects on cell kinetics and cell cycle progression of labeled cells using simultaneous flow cytometric BrdU/DNA analysis. Three anticancer drugs, adriamycin (ADR), vincristine (VCR), and cisplatin (CDDP) were tested using the cultured cell line (MBT-2) originated from FANFT-induced mouse bladder tumor. The effects of these drugs were compared with percent colony survivals calculated by colony assay. The anticancer effects (IC90 levels) of ADR and CDDP could be determined by analyzing the effect of the drug on cell kinetics and cell cycle progression using the aforementioned method. However, in the case of VCR no relationship was found between the effect of the drug on cell kinetics and its anticancer effectiveness. Therefore, we must search for a better parameter for VCR, such as the inhibition rate of BrdU uptake.

Animals↗
PubMed1987

[Pharmacokinetics of high-dose cisplatin administration (relationship between pharmacokinetics and administration schedule)].

Three cases of urogenital malignancy were treated with 80-120/m2 of cisplatin by a 0.5-hour (rapid) or 4-hour (slow) infusion. Each patient received three courses of repeated chemotherapy. The kinetics of total platinum was measured up to 48 hours in the blood and urine. The blood peak concentrations were achieved 6.0 micrograms/ml by rapid infusion, 2.0 micrograms/ml by slow infusion. The time dependent urinary excretion rate against total administered dose was 40% in 60 min. by rapid infusion, 20% in 16 hours by slow infusion. The volume of distribution correlated with infusion time. Rapid infusion way of cisplatin could be better to treat the patient with bulky tumor mass or patients with uroepithelial cancer like CIS, because a higher blood and urine concentration can be obtained than by slow infusion.

Adolescent↗
PubMed1986

[Clinical evaluation of Cernilton in benign prostatic hypertrophy].

Twenty patients with benign prostatic hypertrophy were treated with Cernilton, 6 tablets a day for an average of 13.2 weeks. Subjective effectiveness was observed in the improvement of sense of residual urine (92%), retardation (86%), night frequency (85%), strain on urination (56%), protraction (53%) and forceless urinary stream (53%). The overall subjective effectiveness was 80% of patients, and the overall objective effectiveness was 54% of patients. Night frequency, residual urine volume and tidal urine volume were improved significantly. The overall effectiveness was 80%. No side effects were observed.

Aged↗
PubMedDate not supplied

Prognostic implications of the response of arterial ketone body ratio and insulin secretion to glucose load in major hepatectomy.

Impaired glucose tolerance is a serious obstacle to major hepatic resection. To assess the predictability of surgical risk in major hepatectomy for patients with chronic liver diseases from the viewpoint of glucose metabolism, we evaluated the insulinogenic index (II) and redox tolerance index (RTI) in 48 patients who underwent major hepatectomy at our university hospital due to hepatocellular carcinoma. Patients with low II and low RTI fell into the high risk group. Based on this finding, the Z score was developed as an index of patient risk for major hepatectomy: Z = 3.11 x [II] + 1.43 x [RTI] - 2.27. When the Z score was negative, mortality reached 33.3%, but when it was positive the mortality was only 3.2%. Intraportal insulin supplementation after hepatectomy to patients with a negative Z score could reduce mortality. Preoperative evaluation of surgical risk by Z score seems to be useful for predicting patient prognosis after hepatectomy.

Aged↗
PubMedDate not supplied

Gelatin particle indirect agglutination test for serodiagnosis of schistosomiasis: comparative study with enzyme-linked immunosorbent assay.

A new serological test, the gelatin particle agglutination test (GPAT), was used for the serodiagnosis of schistosomiasis mansoni. This technique showed the sensitivity (90.6%) and specificity (97.8%) close to those of enzyme-linked immunosorbent assay. The GPAT can be easily and rapidly performed without specialized equipment, by using lyophilized antigen-coated gelatin particles. The test also seems to be useful for mass screening of Schistosoma infection in field conditions.

Agglutination Tests↗
PubMedDate not supplied

Prevalence of intestinal parasitic infection in five farms in Holambra, São Paulo, Brazil.

A parasitological survey was carried out on 222 inhabitants of five farms in Holambra, located 30 km north of Campinas, São Paulo, Brazil, on October 1992. Approximately 70% of the inhabitants were found to be infected with at least one species of intestinal parasite. The positive rates of 6 helminths and 7 protozoan species detected are as follows: 5.4% Ascaris lumbricoides; 8.6% Trichuris trichiura; 19.8% Necator americanus; 10.4% Strongyloides stercoralis; 1.4% Enterobius vermicularis; 0.9% Hymenolepis nana; 3.2% Entamoeba histolytica; 2.7% E. hartmanni; 9.9% E. coli; 14.0% Endolimax nana; 2.3% Iodamoeba butschlii; 10.4% Giardia lamblia; 37.8% Blastocystis hominis. The positive rates of helminth infection were generaly higher in the younger-group under 16 years-old than those in the elder group aged 16 or more, whereas the infection rates of protozoan species were higher in the elder group. The infection rate of Strongyloides was found to be 10.4% by a newly developed sensitive method (an agarplate culture methods).

Adolescent↗