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Biomedical subjects

Y Inoue

Publications and source records attributed to Y Inoue.

At least 1,747 records · Page 97Linked to original sources
PubMed1986

Pituitary dwarfism: CT evaluation of the pituitary gland.

The pituitary glands of 12 patients, aged 4-20 years, with pituitary dwarfism and of 15 age-matched control patients were evaluated with contrast-enhanced, high-resolution computed tomography (CT). In control patients, CT clearly demonstrated pituitary glands and stalks, 2.5-9.0 mm in height (average, 5.7 mm +/- 1.8). In the 12 patients with pituitary dwarfism, CT did not demonstrate the gland or stalk in four; CT faintly showed only the stalk in another four and showed a small gland (less than 2 mm in height) and a small to normal stalk in the remaining four. Eleven of the 12 patients had a birth history of breech presentation. Possible causes of pituitary dwarfism are discussed.

Adolescent↗
PubMed1986

[Effects of misoprostol, (+/-)-methyl (11 alpha, 13E)-11, 16-dihydroxy-16-methyl-9-oxoprost-13-en-l-oate, on various gastric and duodenal lesions in rats].

Male Sprague-Dawley rats (230-280 g), either fasted for 15-24 hr or non-fasted prior to experiments, were used. Misoprostol (3-100 micrograms/kg, p.o.) dose-dependently inhibited the development of 150 mM HCl X aspirin (100 mg/kg)-, 150 mM HCl X 60% ethanol-, and aspirin (150 mg/kg)-induced gastric lesions. Misoprostol (30, 100 micrograms/kg, p.o.), given twice daily for 4 days, significantly inhibited prednisolone (50 mg/kg given once daily for 4 days)-induced gastric lesions. Misoprostol (30 or 2 X 300 micrograms/kg, p.o.) also significantly inhibited water-immersion stress (21 degrees C, 10 hr)-induced gastric lesions or mepirizole (200 mg/kg)-induced duodenal lesions, respectively. In contrast, misoprostol (30-300 micrograms/kg, p.o.) had no effects on indomethacin (25 mg/kg)- and mepirizole (200 mg/kg)-induced gastric lesions. Misoprostol (30 micrograms/kg, p.o.) had no effect on gastric secretion in pylorus-ligated preparations (4 hr), but it (100 or 300 micrograms/kg, p.o.) significantly increased the volume and pepsin output. Gastric motility, either normal or enhanced with indomethacin (25 mg/kg), was inhibited by misoprostol (30 or 300 micrograms/kg, p.o.). Misoprostol (30 micrograms/kg, i.d.) significantly stimulated duodenal HCO3- secretion. Mechanisms by which misoprostol inhibits various gastric lesions remain unknown. However, the stimulatory activity on duodenal HCO3- secretion appears to be involved in the preventive effect of misoprostol on the development of duodenal lesions. The effects of cimetidine and 16,16-dimethyl PGE2 were also studied and compared with those of misoprostol.

Alprostadil↗
PubMed1986

C-peptide immunoreactivity and insulin content in the diabetic human pancreas and the relation to the stability of diabetic serum glucose level.

The content of insulin and C-peptide-like immunoreactivity (CPR) were determined in the tail of pancreas from 35 autopsied diabetic and 21 non-diabetic subjects. In the 28 diabetics who had been followed for more than 6 months, the relation between the amount of insulin or CPR in the pancreas and the stability of fasting serum glucose during diabetic life before death was analyzed together with the relation between the serum CPR response to the breakfast tolerance test before death and insulin content at autopsy. As an index of the instability of the blood sugar level, the standard deviation of the mean of 15 successive determinations of fasting serum glucose was used. Both insulin and CPR content in the pancreas were significantly decreased in diabetics as compared with non-diabetics. SD of the mean fasting serum glucose and insulin or CPR content in the tail of pancreas showed a significant inverse correlation on a logarithmic scale (P less than 0.01, r = -0.704 and P less than 0.01, gamma = -0.757, respectively). Serum CPR value during the breakfast tolerance test correlated significantly with the insulin content in the pancreas of diabetic subjects. These findings suggest that one of the causes of the instability of fasting serum glucose levels is the devastation of pancreatic beta-cells and that the pancreatic insulin content is logarithmically and inversely related to fluctuations in fasting serum glucose.

Aged↗
PubMed1986

Immunohistochemical demonstration of HNK-1-defined antigen in gynecologic tumors with argyrophilia.

Gynecologic tumors with argyrophilia were tested immunohistochemically for reactivity with monoclonal antibody HNK-1, which detects normal and neoplastic cells derived from the neuroectodermal and the amine-precursor-uptake and decarboxylation (APUD) systems. The tumors included six small cell carcinomas and four adenocarcinomas of the cervix; 23 adenocarcinomas of the endometrium (13 with type I and 10 with type II argyrophil cells); and 11 mucinous tumors (three benign, three borderline, and five malignant), eight endometrioid carcinomas (four with type I and four with type II argyrophil cells), and two carcinoid tumors (one insular and one strumal) of the ovary. HNK-1 reactive cells were found in almost every category of tumor: in four small cell carcinomas and two adenocarcinomas of the cervix; 11 adenocarcinomas of the endometrium (eight with type I and three with type II argyrophil cells); and four mucinous (two benign and two borderline), two endometrioid (one with type I and one with type II argyrophil cells), and two carcinoid tumors of the ovary. These cells corresponded to at least some of the type I argyrophil cells in endometrial and ovarian endometrioid carcinomas and to similar cells in mucinous and carcinoid tumors of the ovary and small cell carcinoma and adenocarcinoma of the cervix. However, the remaining type I and similar argyrophil cells and almost all type II argyrophil cells were HNK-1 negative, and some of the nonargyrophil tumor cells were HNK-1 positive. Although the significance of such discrepancies in reactivity with HNK-1 antibody remains unknown, the present results suggest that some of the gynecologic tumors with argyrophilia are related to APUDomas.

Antigens, Neoplasm↗
PubMed1986

[Immunohistological demonstration of peptide hormones and serotonin in ovarian mucinous and endometrioid tumors with argyrophil cells].

The localization of peptide hormones and serotonin in ovarian mucinous and endometrioid tumors with argyrophil cells was examined by immunohistochemistry. All of the 15 mucinous tumors had argyrophil cells which resemble the enterochromaffin cells seen in the gastrointestinal tract, and peptide hormones such as gastrin and somatostatin were found in 3 of 5 benign, in 3 of 5 borderline, and in all of 5 malignant tumors. Serotonin was found in 4 benign, 3 borderline and 2 malignant tumors. Of 19 endometrioid adenocarcinomas, type I argyrophil cells which resemble enterochromaffin cells were found in 4 tumors, type II argyrophil cells which contain argyrophil granules mainly in the apical portion or throughout the whole cytoplasm were found in 14, and mixed type cells were found in one. Somatostatin-positive cells were found only in type I cells of a tumor with mixed type argyrophil cells. Serotonin-positive cells were found in 3 tumors containing type I cells. The results obtained were discussed in the comparison with those of cervical and endometrial adenocarcinomas of the uterus. In conclusion, the present study suggests that type I or similar argyrophil cells in ovarian tumors may have endocrine activity.

Adenocarcinoma↗