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Biomedical subjects

T Tsujii

Publications and source records attributed to T Tsujii.

At least 145 records · Page 8Linked to original sources
PubMed1988

[Antiemetic effect of timiperone and methylprednisolone in cisplatin-induced emesis].

As we already reported, timiperone, a new neuroleptic agent of the butyrophenone group, has a strong antiemetic effect against cisplatin (CDDP)-induced emesis. With timiperone 6 mg/day p.o. from the day before undergoing CDDP therapy to the last day of the therapy, non-vomiting rate was 80%. The most unfavorable adverse effect of this regimen was extrapyramidal symptoms which appear in almost 100% of the patients aged under forty-five. In this study, we attempted to reduce the dose of timiperone and its adverse effect in combination with low-dose methylprednisolone (MPL). Seventeen cases of urological malignancies with a 5-day course of CDDP (15 approximately 25 mg/m2) including anticancer therapy were entered in this open trial. Four cases aged under forty-five were given timiperone 1.5 mg/day p.o. from the day before undergoing CDDP therapy with MPL 125 mg i.v. immediately before CDDP was administered. Thirteen cases aged over forty-five were given timiperone 3.0 mg/day p.o. with MPL given in the same way. Non-vomiting rates were 47 and 79%, respectively. Extrapyramidal symptoms were seen in two cases of both groups. It was concluded that timiperone 3.0 mg with MPL 125 mg has an antiemetic efficacy comparable to that of timiperone 6.0 mg but with less adverse effects.

Adult↗
PubMed1988

[Plasma concentration of alpha-interferon following continuous subcutaneous infusion].

Three or six million units of alpha-Interferon (HLBI) were administered continuously to cancer patients for 24 hours by subcutaneous infusion using Sp-3 microinfusion pump made by Nipro Company. The plasma concentrations after continuous subcutaneous infusion during more than 48 degrees hours were 20.3 IU/ml (10.8-31.9) at 3 x 10(6) IU HLBI and 44.5 IU/ml (9.1-89.2) at 6 x 10(6) IU HLBI. We think that continuous subcutaneous infusion of HLBI is worthy for the treatment of out-patients with malignant tumor, because they do not need to visit hospital daily and also continuous infusion reduces the toxicity of HLBI.

Adult↗
PubMed1987

[Clinical studies on cefuzonam in obstetric and gynecological infections].

Seventeen patients with gynecological infections (5 cases each of Bartholin's abscess and adnexitis, 4 cases of endometritis and 1 case each of bartholinitis, pyosalpinx and vulvar abscess) were treated with cefuzonam (CZON, L-105) administered by intravenous drip infusion, 1-2 g twice daily, for 4 to 12 days (6 g to 23 g in total). The clinical effectiveness reached 94.1%, including 1 excellent case, 15 cases good, and a poor case. Bacteria were detected in 9 cases, and with CZON treatment, bacterial eradications were obtained in 6 case, but, in 3 cases, bacterial replacements were observed. No abnormal laboratory findings were noted. From the above results, CZON seemed to be a highly effective and useful agent for gynecological infections.

Adult↗
PubMed1986

Immunopharmacological study of CCA (Lobenzarit disodium), an anti-arthritis agent--I. Abrogation of IL 1 secretion by LPS-stimulated human monocytes and induction of gamma-interferon production with CCA.

In vitro effects of CCA, an anti-arthritis agent, were studied upon autologous mixed lymphocyte reaction (AMLR), lymphocyte mitogenesis, IL 1 and IL 2 production, immunoglobulin production and gamma-interferon (IFN) production. CCA at 50 micrograms/ml, which was not toxic to cells, blocked AMLR, IL 1 production and immunoglobulin production (IgM and IgG) significantly, while CCA at the same dose did not affect IL 2 production and lymphocyte mitogenic responses to Staphylococcus aureus Cowan I(SAC) and pokeweed mitogen(PWM). CCA at both 20 ng/ml and 20 micrograms/ml induced human gamma/IFN. Addition of IL 1 and/or IL 2 reversed inhibitory effect of CCA on AMLR. These data suggest that CCA exerts its actions by mainly affecting T cells and monocytes and can be used as an immunomodulator.

Humans↗
PubMed1986

Pancreatic carcinoma in childhood.

A case of pancreatic carcinoma in a 14-year-old Japanese boy is reported. He complained of general fatigue, anorexia, abdominal distension, and abdominal mass. At autopsy, a whitish tumor was found from the head to the body of the pancreas. Metastasis was found in the liver, lungs, gall bladder, and various lymph nodes such as stomach, hilus, and periaorta. The tumor was histologically determined to be moderately differentiated adenocarcinoma (cribriform type) of duct cell origin. However, the tumors showed PAS-positive diastase-resistant mucus in the cytoplasm. Histocytology showed the positivity for alpha 1-antitrypsin, secretory component (sc), and CEA, but no S-amylase was detected in the cytoplasm. Electron microscopy revealed zymogen-like granules in the cytoplasm suggesting acinar differentiation.

Adolescent↗
PubMed1986

Urinary prostaglandins and renal function in chronic liver diseases.

Changes in urinary PGE2 and PGF2 alpha excretion in chronic liver diseases were observed in relation to renal hemodynamics and sodium balance. After equilibration on a 110-170-meq sodium diet, daily urine collections were analyzed for PGE2 and PGF2 alpha by a new extraction and radioimmunoassay method. PGE2 was significantly greater in cirrhotics than in healthy subjects and in chronic hepatitis. The value was greater in cirrhotics with ascites than in those without ascites (p less than 0.05). PGF2 alpha did not differ among the groups. In cirrhotics PGE2 was correlated negatively with creatinine clearance (Ccr)(r = -0.76, p less than 0.001). After administration of 200 mg indomethacin, a significant fall in Ccr was seen only in cirrhotics with ascites. The percentage fall in PGE2 after indomethacin correlated with that in Ccr (r = 0.89, p less than 0.05) and with that in urinary sodium excretion (r = 0.68, p less than 0.02). These results suggest that PGE2 is essential in the maintenance of renal function in liver cirrhosis with ascites.

Adult↗
PubMed1985

Fine-granular cationic iron colloid. Its preparation, physicochemical characteristics and histochemical use for the detection of ionized anionic groups.

In order to obtain distinct and reliable information concerning the localization of ionized anionic groups in tissues, fine-granular cationic ferric hydroxide colloid solution (Fe-Cac-f) was newly devised. This can be obtained by boiling a mixture of ferric chloride and ammonium cacodylate solutions. The colloid particles of Fe-Cac-f are about 1.0 nm in size, i.e., one-fifth of the size of ferric cacodylate colloid (Fe-Cac; Seno et al. 1983a). As with Fe-Cac, Fe-Cac-f particles in the pH range of 1.6-7.6 carry a positive electric charge, but the latter show a better permeation of tissues. Using the Prussian blue reaction, Fe-Cac-f gives a distinct deep-blue color and can be used for the detection of anionic groups of acid mucopolysaccharides and proteins by light microscopy. It is also useful for detecting the exact sites of ionized anionic groups in deep tissue areas using electron microscopy.

Animals↗
PubMed1984

The anionic barrier system on the mesonephric renal glomerulus of the brown hagfish, Paramyxine atami Dean (Cylostomi).

The distribution of anionic groups of acid mucopolysaccharides on the surface of glomerular constituents of a brown hagfish, Paramyxine atami Dean, has been studied morphologically. The ionized anionic groups of acid mucopolysaccharides were labeled on fixed tissues by staining with cationic cacodylate iron colloid (Fe-Cac) at pH 4.0. The glomerular permeability to cationic and anionic macromolecules was observed morphologically in the kidney of the animal injected with native anionic ferritin (NF) or cationized ferritin (CF) into the dorsal aorta. Histochemical staining of tissues with Fe-Cac (pH 4.0) revealed the ionized anionic groups of acid mucopolysaccharides on both luminal and abluminal surfaces of endothelial cells, within the glomerular basement membrane (GBM), and on the visceral epithelial cell surface facing the urinary space. The CF molecules introduced into the dorsal aorta easily passed through the fenestrae of the capillary endothelial cell layer and the thick fibrillar GBM, reaching the urinary space to be adsorbed to the visceral epithelial cell surface or taken up by these visceral epithelial cells. On the other hand, NF hardly passed through the capillary wall. These results show that the nonosmoregulating mesonephric glomerulus of the brown hagfish has a working anionic barrier system. The function of its glomerulus is compared to that of the mammalian metanephric glomerulus.

Animals↗
PubMed1984

The anionic barrier system in the mesonephric renal glomerulus of the arctic lamprey, Entosphenus japonicus (Martens) (Cyclostomata).

To examine the selective permeability of the nephrons of lower vertebrates, the permeability of the glomerulus in the kidney of an arctic lamprey, Entosphenus japonicus (Martens), to native anionic ferritin or cationized ferritin was studied by observing the distribution of ionized anionic groups in renal tissues. The cationized ferritin molecules injected into the dorsal aorta penetrated rapidly into the glomerular basement membrane layer through fenestrae present in the capillary endothelium and were subsequently excreted into the urinary spaces via the interstices between foot processes of the visceral epithelial cells. Native anionic ferritin, on the other hand, passed only minimally through the capillary wall. Cytochemical staining of fixed tissue or perfusion of the kidney in situ with cationic cacodylate-iron colloid revealed that the ionized anionic groups of acid mucopolysaccharides were distributed on both the luminal and abluminal surfaces of endothelial cells, and in the thick fibrous lamina rara interna of the glomerular basement membrane; they were especially dense on the surfaces of visceral epithelial cells and their foot processes. These results suggest that the mesonephric glomerulus of the arctic lamprey possesses a functionally well developed anionic barrier system comparable to that of the mammalian metanephric glomerulus.

Animals↗
PubMed1984

Absorption of elastase through the jejunal mucosa of the rat. An immunocytochemical study.

In order to reveal the absorption process of elastase from the intestine, hog pancreatic elastase was injected into the ligated jejunum lumen of the rat, and the tissues were cytochemically observed at various times after injection. The peroxidase anti-peroxidase (PAP) method using anti-hog-elastase rabbit antibody was used for light microscopy, and the anti-elastase Fab'-peroxidase conjugate was used for electron microscopy. The tissues stained by the PAP method exhibited a dense deposition of reaction products on the luminal surface of epithelial cells and a moderate deposition in the blood and lymph capillaries of the intestinal villi. Immunoelectron microscopy revealed that the reaction product was deposited on the surface of the microvilli and in their pocketing; some was found in the pinocytotic vesicles in the terminal-web area and on the inner surface of the enlarged smooth endoplasmic reticulum. Round droplets which gave a positive reaction were found in the widened intercellular cleft and the thick basement membrane lining the blood capillaries and lymphatics. The jejunum retained its normal ultrastructure. The results indicate that the elastase molecules, which were introduced into the rat jejunum lumen, were absorbed without being decomposed through healthy intestinal epithelial cells by pinocytosis and translocated into blood and lymph capillaries.

Animals↗
PubMed1983

Cationic cacodylate iron colloid for the detection of anionic sites on cell surface and the histochemical stain of acid mucopolysaccharides.

Stable cationic iron colloid solution was prepared by mixing the Hale's iron colloid (Hale 1946; Mowry 1963) with sodium cacodylate buffer solution. The colloid particles obtained were 30-50 A in size and kept their positive charges in a wide range of pH 1.8-7.6. Observations made on rat kidney tissues proved that this iron colloid solution is promising for the detection of anionic sites of cell surface in fixed tissues as well as in living cells in place of cationic ferritin.

Animals↗