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Biomedical subjects

T Horiguchi

Publications and source records attributed to T Horiguchi.

At least 145 records · Page 8Linked to original sources
PubMed1983

Electron-microscopical study of the operculum in anuran tadpole after extirpation of the right forelimb during metamorphosis.

The process of histolysis and fenestration of the skin of the prospective opercular perforation region of Rana japonica after extirpation of the right forelimb was observed during metamorphosis by transmission and scanning electron microscopy. Epidermal cells of the belly of the tadpole, including the operculum, are extremely similar in their ultrastructure. Epidermal cells of the prospective opercular perforation region during metamorphosis become thin and vacuolated especially around the nucleus perhaps by autolysis, associated with lysosomal activity. The histolysis and formation of the perforation of the operculum occurs in the complete absence of forelimb. Macrophages containing phagosomes and lymphocytes or other blood cells are almost always found in the intercellular epidermis. Necrotic epidermal cells progressively separate by cleft formation and slough off without cornification.

Animals↗
PubMed1981

Significance of C-reactive protein elevation in the pretreatment stage of systemic lupus erythematosus.

The significance of C-reactive protein (CRP) elevation in patients with systemic lupus erythematosus (SLE) in the pretreatment stage was assessed with reference to other laboratory data obtained simultaneously. Sixteen of 31 cases were CRP-positive, and the CR-positive group contained significantly more cases with urinary cellular casts and with a high anti-DNA antibody titer, compared with the CRP-negative group. We suggest that CRP in patients with SLE, as measured at the time of the first consultation, reflects the severity of the disease. This includes those cases complicated by nephropathy.

Adolescent↗
PubMed1981

Correlation between steroid myopathy and serum lactic dehydrogenase in systemic lupus erythematosus.

Examination of 27 patients with systemic lupus erythematosus (SLE) before treatment showed an elevation of the serum level of lactic dehydrogenase (LDH) in 15 patients. In these patients, the LDH level fell to normal in response to corticosteroid therapy. In six of 27 patients, steroid myopathy with elevation of the LDH level developed during corticosteroid therapy. At the same time, there was no or only a slight increase in the creatine phosphokinase level, while the SGOT and aldolase levels remained normal. The elevated LDH levels gradually returned to normal as the corticosteroid dosages were reduced and the myopathic symptoms disappeared. We suggest that the measurement of LDH levels is useful for diagnosis and the subsequent treatment of patients with steroid myopathy in SLE.

Adolescent↗
PubMed1980

81mKr gas generator for lung ventilation study.

A generator of 81mKr was designed and tested. The parent nuclide 81Rb was produced by the 70 MeV proton induced reactions on a Rb2SO4 target. 81mKr was bubbled out with oxygen gas from the 81Rb solution, and collected in a reservoir for lung ventilation studies. The generator was continuously operated at the high flow rate up to 10 1/min. The generator efficiency was 86%. The collection rates in the reservoir were examined under several flow rates. The pure 81mKr isomer was observed wih a NaI (T1) detector at the reservoir.

Humans↗
PubMed1979

Immunopathologic studies of pneumonitis in systemic lupus erythematosus.

We performed immunohistopathologic studies on biopsied lung tissue obtained from two patients with lupus pneumonitis using immunofluorescence, immunoperoxidase, electron microscopy, and acid-microelution. In both patients, immunofluorescence showed granular deposits of IgG, the third component of complement (C3), and DNA in the alveolar walls. The immunoperoxidase technique in both and electron microscopy in one showed that these deposits were in the interstitium of the alveolar walls and in the alveolar capillary walls. The eluates obtained from cryostat sections of the biopsied lungs contained antinuclear factor of IgG class in one patient and showed anti-DNA antibody activity in both. We suggest that the deposits are immune complexes composed of DNA, anti-DNA antibody, and complement and that deposits of DNA-anti-DNA immune complex may play a role in lupus pneumonitis.

Adolescent↗
PubMed1978

Incomplete flagellar structures in nonflagellate mutants of Salmonella typhimurium.

Incomplete flagellar structures were detected in osmotically shocked cells or membrane-associated fraction of many nonflagellate mutants of Salmonella typhimurium by electron microscopy. The predominant types of these structures in the mutants were cistron specific. The incomplete basal bodies were detected in flaFI, flaFIV, flaFVIII, and flaFIX mutants, the structure homologous to a basal body in flaFV mutants, the polyhook-basal body complex in flaR mutants, and the hook-basal body complex in flaL and flaU mutants. No structures homologous to flagellar bases or their parts were detected in the early-fla group nonflagellate mutants of flaAI, flaAII, flaAIII, flaB, flaC, flaD, flaE, flaFII, flaFIII, flaFVI, flaFVII, flaFX, flaK, and flaM. From these observations, a process of flagellar morphogenesis was postulated. The functions of the early-fla group are essential to the formation of S ring-M ring-rod complexes bound to the membrane. The completion of basal bodies requires succeeding functions of flaFI, flaFIV, flaFVIII, and flaFIX. Next, the formation of hooks attached to basal bodies proceeds by the function of flaFV and by flaR, which controls the hook length. Flagellar filaments appear at the tips of hooks because of the functions of flaL, flaU, and flagellin genes.

Flagella↗
PubMed1975

The efficacy of intramuscular 15 methyl prostaglandin E2 in second-trimester abortion. Coagulation and hormonal aspects.

Termination of pregnancy in the second trimester is sometimes associated with serious complications. This led to clinical investigation seeking methods superior to the traditional technique utilizing hypertonic saline. Intra-amniotic administration of naturally occurring prostaglandin F2-alpha has been developed and appears to be advantageous--especially in the area of coagulation stability. This study describes a technique for intramuscular administration of a prostaglandin analogue--15 methyl prostaglandin E2. This analogue is much more potent than the natural compound. Administration to 32 patients resulted in abortion in 28. The coagulation milieu remained completely intact and all other parameters were similar to previous published data for prostaglandin administration. There were no infections in this group of patients.

Abortifacient Agents↗
PubMed1975

Ethnic differences in neonatal jaundice: comparison of Japanese and Caucasian newborn infants.

The incidence of neonatal jaundice was compared in Japanese and Caucasian infants at The Roosevelt Hospital between January, 1970, and August, 1972. The Japanese group was found to have significantly higher neonatal jaundice of unknown etiology (57 .39 per cent) than the Caucasian group (16 per cent). Twenty-three per cent of the Japanese group and none of the Caucasian group developed hyperbilirubinemia exceeding 15 mg. per 100 ml. of serum

Alanine Transaminase↗