Search PubMed⌕ Search

Biomedical subjects

S Inoue

Publications and source records attributed to S Inoue.

At least 1,189 records · Page 66Linked to original sources
PubMed1988

Expression and regulation of c-erb-A mRNA from lymphocytes in patients with thyroid dysfunction.

To investigate the expression and the regulation of nuclear triiodothyronine (T3) receptor at the gene level, cellular(c)-erb-A mRNA isolated from lymphocytes in patients with thyroid dysfunction was examined by Northern gel analysis and dot blot hybridization using viral (v)-erb-A cDNA probe. Human lymphocytes contained c-erb-A mRNA (approximately 2.0 kilobase (kb) in length), and c-erb-A mRNA, which was determined by dot blot hybridization, was observed to be increased in hypothyroid patients but unaltered in hyperthyroid patients. The high level of c-erb-A mRNA may contribute in part to the increase in nuclear T3 receptor and these results suggest the presence of up-regulation of nuclear T3 receptor at the gene level in the lymphocytes of hypothyroid patients.

Cell Nucleus↗
PubMed1988

Enhancing effect of phenobarbital sodium on Tyzzer's disease in mice.

Tyzzer's disease in mice was aggravated by phenobarbital sodium (PB) given consecutively after bacterial inoculation. In PB-treated mice, mortality rate and severity of liver lesions were higher with more prominent bacterial propagation in hepatocytes as compared with non-treated ones, suggesting that PB had an enhancing effect on metabolic activities of host hepatocytes resulting in increased intracellular growth of bacteria.

Animals↗
PubMed1988

Spontaneous fractures of the hip in the elderly.

The authors found 41 patients with 42 fractures of the hip who had no distinct history of trauma in the total of 1,449 hip fractures treated. They were all women ranging in age from 64 to 91 years. Most of the fractures were of intracapsular type. Three extracapsular fractures, however, were found. Fractures were randomly selected with clear history of trauma, which were matched to the patients with no trauma for age, sex, and type of fracture as a control group. The grades of osteoporosis of the femoral neck, estimated with the Singh index, and of the spine, estimated with the spinal score, were noted statistically significantly higher in the patients than those in the control group. Most of spontaneous fractures of the hip in the elderly are considered similar phenomena to the compression fractures of the dorsolumbar spine.

Aged↗
PubMed1988

Swelling of the cauda equina in patients who have herniation of a lumbar disc. A possible pathogenesis of sciatica.

Morphological changes in the cauda equina in patients who have herniation of a lumbar disc have not been previously reported, to our knowledge. Using computed tomographic myelography, we found swelling of nerve-root elements in the cauda equina that corresponded to the affected root in seventeen of twenty-eight patients who had proved herniation of a lumbar disc. All seventeen patients had severe sciatica. The swelling of the nerve-root elements gradually returned to normal after surgical decompression, which was also associated with improvement of the sciatica. Patients who did not have severe sciatica did not show swollen nerve-root elements. These findings may be an important clue to the mechanism of sciatic pain in patients who have herniation of a lumbar disc.

Adolescent↗
PubMed1988

Prejunctional alpha adrenoceptor and angiotensin receptor function in isolated human, monkey and dog arteries.

Transmural electrical stimulation (2-20 Hz) produced a frequency-dependent contraction in dog mesenteric, monkey mesenteric and human gastroepiploic arterial strips, which was abolished by tetrodotoxin and suppressed by phentolamine. Treatment with yohimbine (10(-9) and 10(-8) M) potentiated the response to nerve stimulation dose-dependently in the dog arteries, but rather attenuated the response of the primate arteries. Yohimbine (10(-8) M) attenuated the contraction caused by exogenous norepinephrine in the dog and monkey arteries. Angiotensin (ANG) II (2 X 10(-10) M) and ANG I (10(-9) M) potentiated the response to transmural stimulation in the dog and monkey arteries, whereas the response to norepinephrine was unaffected. The ANG I-induced potentiation was suppressed by treatment with ANG converting enzyme inhibitors. 3H-Overflow evoked by transmural stimulation in tissues prelabeled with [3H] norepinephrine was increased by yohimbine in the superfused dog arteries but was not increased significantly in the monkey arteries. The overflow was increased significantly by ANG II in the dog and monkey arteries. It may be concluded that prejunctional alpha-2 adrenoceptors mediating the inhibition of transmitter release do not function significantly in human gastroepiploic and monkey mesenteric arteries, and postjunctional alpha-2 receptors are involved partly in contractions of the monkey arteries due to adrenergic nerve stimulation. ANG II appears to be synthesized from ANG I via ANG converting enzyme in the primate arteries; the octapeptide potentiates the contraction caused by adrenergic nerve stimulation, possibly due to prejunctional ANG receptor activation and increased norepinephrine release.

Aged↗
PubMed1988

Simultaneous flow cytometric detection of nuclear DNA and tumor-associated antigens in lung cancers.

Flow cytometric (FCM) determinations of DNA index were found to be insufficient to distinguish the presence of tumor cells from normal ones in neoplastic tissues obtained from 29 patients with lung cancer. Therefore, the DNA and tumor-associated antigen (TAA) contents of cultured human lung cancer cells were simultaneously analyzed using FCM to assess whether this dual technique would help in distinguishing tumor cells from normal ones. For the study, cells from PC-10 (a squamous cell carcinoma line), PC-3 (an adenocarcinoma line) and PC-6 (a small cell carcinoma line) were mixed with normal peripheral lymphocytes. The TAAs studied were carcinoembryonic antigen (CEA), squamous cell carcinoma antigen (SCCA) and neuron-specific enolase (NSE). The alcohol-fixed cells were treated with the respective primary TAA, followed by fluorescein-isothiocyanate-conjugated secondary antibody; the cellular DNA was then stained using propidium iodide. Red and green fluorescences were measured simultaneously by FCM. The results showed CEA mainly in PC-3 cells, SCC in PC-10 cells and NSE in PC-6 cells; thus, each cell type had a relatively specific TAA. DNA content and cell size analyses differentiated neoplastic cells from normal lymphocytes for PC-3 and PC-10 cells, but not for PC-6 cells. Simultaneous FCM analyses of DNA and the TAA specific for the individual cell type made it possible to distinguish all tumor cell types from normal lymphocytes.

Adenocarcinoma↗
PubMed1988

Immunological status of nude mice engrafted with allogeneic or syngeneic thymuses.

Restoration of T-cell functions and changes in autoantibody production were studied in BALB/c nu/nu (nude) mice engrafted with syngeneic (BALB/c) or allogeneic (C57BL/6J) thymuses across major histocompatability barriers. T-cell functions, including mitogen responses and antibody production to sheep red blood cells (SRBC), were restored in nude mice engrafted with either allogeneic or syngeneic thymuses. Alloreactivity was evaluated by analysis of the pattern of skin allograft rejection, generation of alloreactive cytotoxic T-lymphocytes (CTLs), or quantitation of mixed-lymphocyte reaction (MLR). BABL/c nude mice engrafted with thymuses from newborn C57BL/6J mice accepted the skin from either thymus donor-type mice or from host-type mice. By contrast, such thymic chimeras rejected skin grafts from a third-party donor. CTLs from nude mice engrafted with C57BL/6J thymuses were cytotoxic to target cells of the third party but not to target cells of the host-type or of the thymus-type. In the MLR assay, spleen cells of nude mice engrafted with C57BL/6J thymuses responded vigorously to third party cells and only slightly to cells of the thymus-type. Low levels of serum IgG and high titers of IgM antibodies to nuclear antigens (but not dsDNA) or skin basal cells were also found in nude mice. Antibodies to both nuclear antigens and skin basal cells disappeared after transplantation of syngeneic thymuses, but not after transplantation of allogeneic thymuses. By contrast, serum IgG levels were restored to normal in nude mice engrafted with either syngeneic or allogeneic thymuses. These results suggest that either HLA-matched or HLA-mismatched thymus grafts may become a viable treatment for certain patients with T cell deficiencies associated with deficient development or maintenance of thymic structure and/or function.

Animals↗
PubMed1988

Endothelium-dependent and independent responses to prostaglandin H2 and arachidonic acid in isolated dog cerebral arteries.

The addition of prostaglandin (PG) H2 produced a transient contraction followed by a relaxation in helical strips of dog cerebral arteries partially contracted with PGF2 alpha or K+. The contraction was abolished by removal of endothelium, and the relaxation was potentiated. Relaxation induced by PGI2 was not influenced by endothelium denudation. The PGH2-induced contraction in strips with intact endothelium was not influenced by OKY-046, a thromboxane A2 synthesis inhibitor, but was abolished by treatment with ONO3708, an antagonist of vasoconstrictor PGs, whereas the relaxation was inhibited by tranylcypromine or diphloretin phosphate, a nonselective PG antagonist. Contraction induced by arachidonic acid (AA) was reversed to relaxation by removal of endothelium or treatment with ONO3708. Treatment with indomethacin attenuated the AA-induced contraction in the intact strips and also the relaxation in the strips treated with ONO3708 or denuded of endothelium. It may be concluded that vasoconstrictor PGs are synthesized from PGH2 or AA mainly in endothelium, and the production of PGI2 from PGH2 is not dependent on endothelium. Thromboxane A2 in concentrations sufficient to elicit significant contractions does not appear to be liberated from the cerebroarterial wall stimulated by PGH2.

Animals↗