Biomedical subjects

M Miyake

Publications and source records attributed to M Miyake.

At least 253 records · Page 14Linked to original sources

PubMed1992

[Clinical efficacy of levofloxacin (LVFX) single-dose therapy in female acute uncomplicated cystitis].

Treatment of infections by the use of antimicrobial agents should be made essentially in a dose close to the minimally required dose. Acute uncomplicated cystitis in female fits as the subject for a single-dose therapy since it is an infection reactive relatively easily to antimicrobial agents. Accordingly, an assessment has been made regarding the therapeutic results of the single-dose therapy in 76 female cases of acute uncomplicated cystitis by the use of LVFX 200 mg which is a new quinolone. The urinary concentration more than MIC90 to Escherichia coli is sustained for about 3 days by this single-dose therapy. As a result of judging the therapeutic results from the reactions of the three clinical findings of pain on micturition, pyuria and bacteriuria, excellent therapeutic results were obtained with effective rates being 100% (76/76) on the day 3, 93.9% (46/49) on the day 7 and 94.4% (34/36) on the day 14. The rate of cystitic symptoms which recurred posed no problem, being 12.5% (5/40) up to three months, as investigated by a questionnaire. As a result of performing close urological examinations such as cystoscopy on six cases with insufficient results or recurrence, we could detect mild underlying conditions which are considered to be intractable factors in the bladder in three cases. From the above results, the single-dose therapy of acute uncomplicated cystitis in the female by LVFX which is a new quinolone was considered to be an excellent therapeutic drug from its characteristics such as its therapeutic results being the same as the conventional therapy by daily administration, excellent drug compliance, low cost, hard selectiveness of resistant strains, less side effects and furthermore it gives the opportunity of detecting a latent and mild underlying condition.

Acute Disease↗

PubMed1992

[Limonoids in Phellodendron amurense (Kihada)].

Limonoids and their glucosides in the seeds and barks of Phellondendron amurense (Kihada) were analyzed. The seeds contained limonin (1950 ppm), obakunone (20 ppm), limonin 17-beta-D-glucopyranoside (820 ppm) and obakunone 17-beta-D-glucopyranoside (1360 ppm). The barks contained limonin (6760 ppm), obakunone (1240 ppm) and nomilin (270 ppm).

Chromatography, High Pressure Liquid↗

PubMed1992

[Stability of body composition in boys and girls 12 through 15 years of age].

Although underwater weighing has been regarded as a representative of the criterion reference methods for determining body composition, this technique is cumbersome for screening. The purpose of the present study was to examine the stability of body composition assessed not only by underwater weighting but also by existing bioelectrical impedance equations and skinfold thickness equations during a 4-week period. Ten male and 10 female junior high school pupils, aged 12 to 15 years, volunteered to serve as subjects. Body density (Db) was estimated by underwater weighing (UW), skinfold thickness (ST) method, and bioelectrical impedance (BI) method. The UW was considered criterion reference method. The underwater weight was the heaviest value that was reproduced twice at least among 5 to 10 measurements. Residual lung volume was estimated "in water," with the subject in the sitting position, by a closed-circuit helium-dilution method. The ST equations used for determination of Db were those developed by Nagamine et al., while in the BI method equations proposed by Nakadomo et al. were applied. The Db for boys by UW did not differ significantly during the 4-week period; however, in girls it was significantly lower in the 2nd test (1.0479 +/- 0.018 g/ml) than in the 1st test (1.0500 +/- 0.019 g/ml). Likewise, the Db estimated by ST and BI methods remained unchanged in boys, while in girls it was significantly lower in the 2nd test (BI: 1.0445 +/- 0.010 vs. 1.0389 +/- 0.013 g/ml). Test-retest reliability of all the three methods for measurements conducted 4 weeks apart were statistically significant (e.g. UW: r = 0.99, ST: r = 0.94, BI: r = 0.89 in girls). In conclusion, the validity of Db estimated by these two methods was found to be insufficient when absolute values are required. However, body composition estimates assessed by ST and BI methods for boys and girls may be stable on a relative basis.

Adolescent↗

PubMed1992

Small cell lung cancer with extensive cutaneous and gastric metastases.

A case of a 60-year-old Japanese woman with small cell lung cancer involving skin and stomach is reported. She was diagnosed as primary small cell lung cancer accompanied by extensive cutaneous metastases. Three months after the last chemotherapy, she complained of nausea and vomiting. Brain CT scan showed no evidence of central nervous system involvement. Upper gastrointestinal study and upper gastrointestinal fiberscopy revealed multiple metastatic gastric tumors. Skin and stomach are uncommon metastatic sites for any malignancy. Furthermore, only a few cases with gastric metastasis could be diagnosed during their lifetime.

Carcinoma, Small Cell↗

PubMed1992

Retroperitoneal ganglioneuroma: a case report and review of the Japanese literature.

A rare case of retroperitoneal ganglioneuroma incidentally found during an annual health examination is presented. The patient was an asymptomatic female, age 26. Physical examination and routine laboratory studies gave normal results. The plasma concentrations and 24-h urinary excretion of catecholamine and its metabolites were within the normal range. The patient was diagnosed as having a left supra-renal mass (6.3 x 3.6 cm) by abdominal ultrasonography, although by image diagnosis the paraadrenal mass could not be discriminated from an adrenal tumor. Operation was performed under the suspicion of a nonfunctioning adrenal tumor. The tumor removed was 8 x 6 x 4 cm, 98 g and was encapsulated. Histopathological diagnosis of retroperitoneal ganglioneuroma was confirmed. Forty-one cases of retroperitoneal ganglioneuroma in the Japanese literature including the present case are reviewed.

Adult↗

PubMed1992

A case of hypersensitivity syndrome resembling Langerhans cell histiocytosis during phenobarbital prophylaxis for convulsion.

The case of a two-year-old girl with generalized histiocytosis, probably induced by phenobarbital, is reported. Symptoms, including intermittent fever, systemic lymphadenopathy, maculopapular skin eruption and hepatosplenomegaly, suggested Langerhans cell histiocytosis. Laboratory examinations revealed leukocytosis with lymphocytosis and eosinophilia and a high LDH serum level, while GOT and GPT were within normal ranges. Cytological studies of lymph node and pleural effusion specimens revealed proliferation and infiltration of Langerhans cell histiocytes with eosinophilia. No histiocyte proliferation was observed in the bone marrow or skin. The clinical manifestations shown by the patient were, however, transient, and improved spontaneously after the discontinuation of phenobarbital. The case was considered to be one of phenobarbital hypersensitivity syndrome based on clinical course and laboratory findings. The mechanism and differential diagnosis of the syndrome are discussed.

Child, Preschool↗

PubMed1992

Transforming growth factor-beta 1 down-regulates expression of membrane-associated lymphotoxin and secretion of soluble lymphotoxin by human lymphokine-activated killer T cells in vitro.

Lymphokine-activated T killer lymphocytes (T-LAK) are important effector cells in various diseases of tissue destructive reactions. They require stimulation with various cytokines to proliferate and mature into function effector cells. We have examined the role of various endogenously and exogenously added cytokines, and tumor necrosis factor (TNF)/lymphotoxin (LT) receptors in this process in vitro. The present report is a continuation of these studies. We found that human T-LAK cells express membrane-associated LT (mLT) but not TNF, and secrete high amount of soluble LT (sLT) but low levels of TNF. When added to the initial cultures or immature T-LAK cells, transforming growth factor-beta 1 (TGF-beta 1) suppressed both mLT expression and sLT secretion by 30-40%. Coculture of mature T-LAK cells with TGF-beta 1 caused 35% down-regulation of both mLT expression and sLT secretion after 18 h of incubation. Kinetic experiments indicated reduction of LT mRNA synthesis could occur in as little as 1 h when cocultured with 5 ng/ml of TGF-beta 1. TGF-beta 1 also reduced mLT induced T-LAK cell cytolytic activity on L929 cells in vitro. It appears TGF-beta 1 can down-regulate LT mRNA syntheses, mLT expression, and sLT secretion of human T-LAK cells in vitro.

Cells, Cultured↗

PubMed1991

Identification of the motility-related protein (MRP-1), recognized by monoclonal antibody M31-15, which inhibits cell motility.

A murine monoclonal antibody (M31-15) was identified using the penetration-inhibiting assay of a human lung adenocarcinoma cell line (MAC10) and remarkably inhibited the phagokinetic tract motility of various cancer cell lines. The antigen, motility-related protein (MRP-1), recognized by M31-15, was 25- and 28-kD proteins, and M31-15 was used to isolate a cDNA clone from a human breast carcinoma cDNA library. Sequence analysis revealed that MRP-1 had strong similarity with a B cell surface antigen (CD37), a melanoma-associated antigen (ME491), the target of an antiproliferative antibody (TAPA-1), a human tumor-associated antigen (CO-029), and the Sm23 antigen of the trematode parasite Schistosoma mansoni.

Adenocarcinoma↗

PubMed1991

Nucleotide sequence of the replication region of the marine Rhodobacter plasmid pRD31.

The minimum region required for replication of the marine Rhodobacter endogenous plasmid pRD31 has been sequenced. This region is located on a 1367-bp HincII-PstI restriction fragment and is 62% rich in G-C base pairs. A region homologous to the bacteriophage P1 repA promoter, which overlaps two inverted repeats, has been identified. Plasmids with mutations in this 1367-bp region could not replicate in marine Rhodobacter hosts. This is the first identified replication origin of a photosynthetic bacterium.

Amino Acid Sequence↗

PubMed1991

A specific cell surface glycoconjugate controlling cell motility: evidence by functional monoclonal antibodies that inhibit cell motility and tumor cell metastasis.

The biochemical basis of cell motility has been viewed as a complex process involving cell surface membrane proteins, integrin receptors, growth factors and their receptors, and cytoskeletal components [Rosen & Goldberg (1989) In Vitro 25, 1079]. The possible involvement of glycoconjugates at the cell surface in controlling cell motility has not been systematically investigated. We addressed this question using functional monoclonal antibodies (MAbs), which inhibit cell motility and the metastatic potential of tumor cells, as probes. Two such MAbs, derived from two independent processes of immunization and selection, were found to directed to a common specific carbohydrate structure, Fuc alpha 1----2Gal beta 1----R. MAb MIA-15-5 was established after immunization of mice with small cell lung carcinoma line PC7 and selected on the basis of inhibition of U937 and HEL cell migration. MAb MIA-22-20 was established after immunization with lung adenocarcinoma line MAC-10 and selected on the basis of inhibition of MAC-10 cell migration. These two MAbs were both IgM and were consistently reactive with the Fuc alpha 1----2Gal beta 1----R structure, regardless of the identity of the R group. Various other anti-H MAbs, specific to carrier isotype, did not affect cell motility. MAb MIA-15-5 reacted with 30-40% of high-metastatic variant BL6 of mouse melanoma B16 line but with only less than 5% of low-metastatic variant F1. Metastatic deposition to lung after injection of BL6 cells was inhibited if MAb MIA-15-5 was injected within 3 h but was not inhibited by injection of other anti-H antibodies under the same conditions.(ABSTRACT TRUNCATED AT 250 WORDS)

Animals↗

PubMed1991

[A case of undiagnosed pheochromocytoma caused by negative metoclopramide test].

Metoclopramide (MCP), a dopamine antagonist, was recently used as the pharmacological test for the diagnosis of pheochromocytoma. There have been no reports involving false negative cases in the MCP test. We experienced a rare case of pheochromocytoma which showed a negative MCP test, and it caused a failure of the diagnosis. A 51-year-old man visited our hospital with a sudden onset of headache and palpitation. Blood pressure was 218/98 mmHg at another hospital. When he came to our hospital, blood pressure returned to normal (120/80 mmHg), and both serum adrenaline (E) and noradrenaline (NE) were within normal limits. A computed tomography, magnetic resonance imaging, and angiography demonstrated a 1.8 x 1.8 cm right adrenal mass. No changes in blood pressure and plasma catecholamine were observed following the injection of 10 mg of MCP. The pathologically resected right adrenal gland contained a typical pheochromocytoma which was 1.0 x 1.0 cm in size and weighed 8 g. The detailed mechanism of the negative MCP test in this case was not known but might be related to the small size of the tumor.

Adrenal Gland Neoplasms↗

PubMed1991

Fertilizing competency of multiple ovulated eggs in the domestic fowl (Gallus domesticus).

Fertilizing competency of multiple ovulated eggs in the domestic fowl was examined by fertilization in vitro and early development in culture. Normal laying hens (White Leghorn) were treated with 75 IU of PMSG for 7 days followed by injection of anterior pituitary extracts from chickens (CAPE). Ovulation began to occur 7.5 h after injection of CAPE. These hens ovulated 1-7 ova but some premature ovulation of GV stage ova were observed. In vitro fertilization of the multiple ovulated ova was examined by inseminating 10(6)-10(7) sperm onto the germinal disks in m-Ringer's solution. The gamete or zygote nuclei were detected by DNA specific fluorescence using DAPI (4',6'-diamidino-2-phenylindole) in the histological section prepared from the germinal disk. Process of fertilization was examined in the eggs incubated for 4 h after insemination in DMEM + liquid albumen at 41 degrees C under the atmosphere of 5% CO2 in air. Fertilization rate of the total multiple ovulated eggs was 55% (11/20), in which 90% (9/10) and 10% (1/10) in the eggs recovered 7.5-8.5 h and 9.0-9.5 h after CAPE injection were obtained, respectively. Normal pronuclei were formed in five eggs of those recovered 7.5-8.5 h after CAPE injection. Early development after fertilization in vitro was also examined by incubation for 12 h in DMEM + liquid albumen at 41 degrees C under the atmosphere of 5% CO2 in air. Although development in vitro was delayed compared to that in utero condition, normal development was observed in naturally and multiple ovulated eggs.(ABSTRACT TRUNCATED AT 250 WORDS)

Animals↗

PubMed1991

A diurnal variation of vasoactive intestinal peptide (VIP) mRNA under a daily light-dark cycle in the rat suprachiasmatic nucleus.

We detected a diurnal change of vasoactive intestinal peptide (VIP) messenger RNA (mRNA) in the rat suprachiasmatic nucleus (SCN) using the in situ hybridization technique combined with computed image analysis. The amount of VIP mRNA was greatest at 02.00 h, the next largest level was seen at 20.00 h during the dark phase and smallest at 14.00 h during the light phase. We also confirmed that the onset of the fluctuation of mRNA occurred 2-6 h prior to the diurnal variation of the content of VIP-like immunoreactivity by semiquantitative immunocytochemistry. These findings suggest that light stimulus from the retina is a primarily influence on the transcription of VIP mRNA and induces a diurnal variation of VIP synthesis.

Animals↗

PubMed1991

Thoracoabdominal aortic aneurysm associated with Marfan's syndrome--report of a case.

A case of Marfan's syndrome associated with thoracoabdominal aortic aneurysm and mitral regurgitation in a 29 year old male is reported herein. The aneurysm was replaced with a Y-shaped graft using Crawford's technique, while the major branches of the abdominal aorta were separately cannulated from inside the aneurysm and perfused via partial extracorporeal circulation using a left femoro-femoral bypass. We found this technique useful in the prevention of tissue ischemia during the operation. The patient's postoperative course was uneventful and he has encountered no problems in the year and half since his operation.

Adult↗

PubMed1991

Decreased urinary epidermal growth factor levels in diabetic patients.

Urinary human epidermal growth factor levels were assayed in diabetic patients and controls before and after surgery. The preoperative levels in the diabetic patients were decreased and postoperatively, did not show the trough and peak pattern which was seen in the controls.

Diabetes Mellitus, Type 2↗

PubMed1991

Early morphological events of in vitro fertilized bovine oocytes with frozen-thawed spermatozoa.

Bovine follicular oocytes were matured and inseminated in vitro with spermatozoa capacitated in vitro. The first evidence of sperm penetration was observed at 3 h after insemination. The penetration rate increased until 5 h, and reached a maximum rate (92%) at 5 h. Decondensation of the sperm head and pronuclear formation were observed 4 h and 7 h after insemination, respectively. Female chromatins of all penetrated oocytes were activated at 3 h, and female pronuclei were formed at 7 h after insemination. Percentages of oocytes with male and female pronuclei at 9 h were 88 and 94%. Polyspermy (4, 7, 19 and 29% at 4, 5, 7 and 9 h after insemination, respectively) and abnormal development of male pronuclei (6 and 7% at 7 and 9 h after insemination, respectively) were also seen.

Journal Article↗

PubMed1991

Synthesis and evaluation of antiinflammatory activities of a series of corticosteroid 17 alpha-esters containing a functional group.

A series of 21-desoxy-21-chlorocorticosteroids that contain a functionalized ester group at 17 alpha has been prepared and examined to separate their systemic activity from topical antiinflammatory activity. Introduction of the functionalized ester group at 17 alpha was carried out by an acid-catalyzed formation of cyclic ortho esters with 17 alpha,21-hydroxyl groups of corticosteroids and subsequent acid-catalyzed hydrolysis. As for the functional group, chloro, methoxy, acetoxy, cyano, cyclopropyl, or alkoxycarbonyl group was introduced at the terminal carbon atom of the 17 alpha-alkanoate group. The topical antiinflammatory activity and systemic activity of these compounds were examined and found to be significantly dependent on the functionalities in the 17 alpha-esters. Among these derivatives, a series of 17 alpha-(alkoxycarbonyl)alkanoates (17 alpha-OCO(CH2)nCOOR) showed an excellent separation of the systemic activity from topical activity. The effects of the number of methylene groups (n) and of the alkyl groups of the ester (R) on either topical or systemic activity of the corticosteroid derivatives were also investigated.

Administration, Topical↗

PubMed1991

Expression of membrane-associated lymphotoxin/tumor necrosis factor-beta on human lymphokine-activated killer cells.

A membrane-associated lymphotoxin (LT)-related molecule was detected on human lymphokine-activated killer (LAK) cells by flow cytometric analysis. Kinetic analysis revealed that the LT antigenicity on LAK cells appeared at 9 h after the beginning of culture and was maintained thereafter. By autoradiography, the molecular weight of membrane LT was estimated to be 31 kD and/or 62 kD.

Cell Membrane↗