Biomedical subjects

M Kubo

Publications and source records attributed to M Kubo.

710 records · Page 40Linked to original sources

PubMedDate not supplied

Improvement in gastric histology following Helicobacter pylori eradication therapy in Japanese peptic ulcer patients.

We aimed to determine if successful or failed eradication of Helicobacter pylori with triple therapy causes any difference in gastric mucosal histology. Japanese H. pylori-positive patients with a healed peptic ulcer received high (n = 112) or low (n = 113) doses of triple therapy (omeprazole, amoxicillin and clarithromycin) for 1 week. Biopsies from the greater curvature of the central antrum and upper corpus were taken 6 weeks and 30 weeks after treatment completion, and gastric mucosal histology compared between successful (n = 171) and failed (n = 34) eradication groups. Morphological variables of gastritis were graded according to the updated Sydney System. Successful eradication therapy was defined as improvement in inflammation, neutrophil activity and atrophy; failed eradication therapy as improvement in inflammation and neutrophil activity only. Gastric mucosal atrophy gradually improved (in addition to improvements in inflammation and neutrophil activity) with successful eradication of H. pylori infection.

Aged↗

PubMedDate not supplied

[Pharmacological studies on leaf of Arctostaphylos uva-ursi (L.) Spreng. III. Combined effect of arbutin and indomethacin on immuno-inflammation].

A study was carried out to examine the combined effect of arbutin isolated from the leaves of Arctostaphylos uva-ursi (L.) Spreng. (Bearberry leaf) and indomethacin on Type IV allergic reaction-induced immuno-inflammation, carrageenin-induced edema and adjuvant-induced arthritis. Contact dermatitis caused by picryl chloride (PC-CD) and sheep red cell delayed type hypersensitivity (SRBC-DTH) was not inhibited by the oral application of arbutin at 2 divided doses immediately before and 16 h after the application, but arbutin at dose of 50 mg/kg 24 h after the application rapidly decreased the swelling of PC-CD. Arbutin (p.o.) plus indomethacin (s.c.) showed inhibitory effect on the swelling of PC-CD and SRBC-DTH stronger than that of indomethacin alone. When arbutin (p.o.) and indomethacin (s.c.) in a given portion were simultaneously administered, the inhibitory effect was more potent than that of indomethacin alone in both carrageenin-induced edema and adjuvant-induced arthritis. These results suggest that arbutin may increase the inhibitory action of indomethacin on PC-CD, SRBC-DTH, carrageenin-induced edema and adjuvant-induced arthritis, but further investigations are required to understand the mechanism involved.

Animals↗

PubMedDate not supplied

Total lipodystrophy with heart failure and renal failure: report of a case.

A 38-year-old female was admitted to our hospital because of dyspnea. The diagnosis of total lipodystrophy was made by following findings: (1) gaunt appearance; (2) insulin-resistant diabetes mellitus; (3) hyperlipidemia; (4) fatty liver. Chest X-ray demonstrated cardiomegaly, pulmonary edema and pleural effusion. Echocardiogram was characterized by left ventricular hypertrophy with asymmetrical septal hypertrophy and left ventricular dysfunction. Renal biopsy revealed focal glomerulosclerosis. We reported a patient with total lipodystrophy combined with heart failure and renal failure, which have been rarely associated with the disease.

Adult↗

PubMedDate not supplied

Manifestations of temporary symptoms during endoscopic variceal sclerotherapy using thrombin as a sclerosant.

We performed 93 sclerotherapy sessions on liver cirrhosis patients with recurrent variceal bleedings. In each session, hypertonic glucose, thrombin and 1% polidocanol were consecutively injected into the varices, and changes in the hemostatic system were examined in relation to the symptoms observed during the treatment. Patients underwent sclerotherapy with no complaints in 62 (67%) sessions, and complained of slight symptoms of general fatigue and headache in 19 (20%). In the other 12 (13%) sessions, the procedure was discontinued due to marked manifestations of these symptoms. All symptoms were temporary and disappeared completely after the procedure. These temporary symptoms were closely related to changes in coagulation tests similar to those of disseminated intravascular coagulation, which were observed just after the treatment. Possible activation of the renal kallikrein-kinin system following injection sclerotherapy was also demonstrated.

Endoscopy↗

PubMedDate not supplied

Transient encephalopathy following a single exposure of high-dose methotrexate in a child with acute lymphoblastic leukemia.

An episode of transient encephalopathy after the first course of intravenous high-dose methotrexate (HD-MTX; 1000 mg/m2) was observed in a 4-year-old girl with acute lymphoblastic leukemia. The neurological abnormalities took place 5 days after HD-MTX therapy. She experienced complex partial seizure and left hemiparesis, which resolved spontaneously in 5 days. Cranial computed tomographic scan and magnetic resonance imaging showed multiple low-density lesions in bilateral hemispheres. It is well appreciated that neurotoxicity from MTX follows prolonged exposures, often accompanying or following radiation therapy. To our knowledge, however, there have been no reports that such neurological complications developed following a single exposure of HD-MTX in patients with ALL. Follow-up electroencephalograms showed that she had periodic lateralized epileptiform discharges (PLEDS), suggesting functional deafferentation of cortical neurons following HD-MTX. Moreover, the serum and CSF MTX levels following a second low-dose course and her clinical course suggested that she had presumably central nervous system leukemia at the time of HD-MTX therapy, which might have been related to neurological complications. The pathogenesis of MTX-induced neurotoxicity is discussed.

Antineoplastic Combined Chemotherapy Protocols↗

PubMedDate not supplied

Intracranial dural arteriovenous fistulas with retrograde cortical venous drainage: assessment with cerebral blood volume by dynamic susceptibility contrast magnetic resonance imaging.

BACKGROUND AND PURPOSE: Retrograde cortical venous drainage (RCVD) is the most major risk factor for aggressive behavior of intracranial dural arteriovenous fistulas (DAVF). The purpose of this study was to assess the efficacy of relative cerebral blood volume (rCBV) map for RCVD in patients with DAVF. METHODS: Ten patients with angiographically proven DAVF with RCVD, 2 reference patients with DAVF without RCVD, and 10 control subjects underwent examinations with dynamic susceptibility contrast (DSC)-MR imaging. Four patients with DAVF with unilateral RCVD were evaluated, before and after treatment. The calculation of mean rCBV ratio was performed on a hemispheric basis. The mean rCBV ratio was defined as the value on one side (higher value side) divided by that on the other side (lower value side). RESULTS: In all patients with DAVF with RCVD, the rCBV map showed an increase in rCBV of the angiographically proved affected hemisphere. In 2 reference patients with DAVF without RCVD and all control subjects, the rCBV map showed no increase of rCBV. The mean rCBV ratio in patients with DAVF with RCVD was significantly higher than that of control subjects (P = .0002). Treatment response for RCVD was indicated by a decrease of CBV on the rCBV map and by a decrease of 22% in the mean rCBV ratio. CONCLUSIONS: Increased rCBV by DSC-MR correlated with RCVD in patients with DVAF. The assessment with rCBV for RCVD may be more quantitative than that with angiogram.

Aged↗

PubMedDate not supplied

Clinical significance of serum matrix metalloproteinase-13 levels in patients with localized scleroderma.

OBJECTIVES: To investigate the clinical significance of serum matrix metalloproteinase-13 (MMP-13) levels in patients with localized scleroderma (LSc). METHODS: Serum MMP-13 levels were determined by using a peptide substrate cleavage assay in 10 patients with generalized morphea, 10 with linear scleroderma, 10 with morphea, and 10 normal controls. RESULTS: The serum MMP-13 levels in patients with LSc were lower than those in normal controls, but there was no significant difference (64.9 +/- 19.9 versus 73.2 +/- 11.5, p = 0.058). Serum MMP-13 levels in patients with generalized morphea were significantly lower than those in normal controls (54.0 +/- 18.7 versus 73.2 +/- 11.5 ng/ml; p < 0.01). Serum levels of MMP-13 were comparable among normal controls, the patients with linear scleroderma, and those with morphea. The prevalence of muscle involvement was significantly greater in the LSc patients with decreased MMP-13 levels compared with those with normal MMP-13 levels (50% versus 8%, p < 0.05). Serum MMP-13 levels were significantly inversely correlated with the number of linear lesions (r = 0.366, p < 0.05) and the number of involved body areas (r = 0.552, p < 0.005) in patients with LSc, while there was no significant correlation between serum MMP-13 levels and the number of plaque lesions. Furthermore, there was significant inverse correlation between serum MMP-13 levels and the number of involved body areas in patients with generalized morphea (r = 0.631, p < 0.05). CONCLUSION: The serum MMP-13 levels may reflect the disease severity in patients with LSc, especially generalized morphea, the severest form of this disorder.

Adolescent↗

PubMedDate not supplied

Systemic amyloidosis in laying Japanese quail.

Systemic amyloidosis was seen in laying Japanese quail in a flock of a farm rearing 95,000 birds. The clinical signs included decreased egg production, anorexia, white diarrhea, and subcutaneous abscesses of the head. Histologically, amyloid deposited predominantly in the spleen and liver. In addition, there were lesser degrees of amyloidosis in other organs (pancreas, kidney, heart, lung, gastrointestinal tract). Amyloid stained positively with Congo red and thioflavin T. Immunohistochemically, amyloid substance stained positively against amyloid A protein, but not with amyloid protein derived from light chains of immunoglobulins, transthyretin of familiar amyloid polyneuropathy, amyloid protein of dermal amyloidosis, nor amyloid P component. Ultrastructurally, amyloid substance consisted of many nonbranching amyloid fibrils about 10 nm in diameter.

Abscess↗