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Biomedical subjects

R Satodate

Publications and source records attributed to R Satodate.

At least 91 records · Page 5Linked to original sources
PubMed1988

[Nuclear morphometry of cancer cells in stage III breast cancer with special reference to prognosis].

The nuclear area (NA) and nuclear form factor (NFF) (NFF = 4.pi.NA/P2. Na, nuclear area; P, perimeter) have been measured in fifteen stage III patients with an invasive ductal breast cancer, using an image analyzer (IBAS-2000, Zeiss). The NA has been revealed as being 41.8 +/- 8.82 micrograms2 (mean +/- S.D.) in five-year survivors (n = 8), and 59.4 +/- 12.9 micrograms2 in non-survivors (n = 7). The NFF was found to be 0.74 +/- 0.038 in those who survived, and 0.69 +/- 0.028 in non-survivors. The NA was significantly lager (p less than 0.01) and the NFF significantly lower (p less than 0.05) in the non-survivors than in the survivors. NA and NFF are considered to be helpful in determining the prognosis of breast cancer patients in stage III.

Breast Neoplasms↗
PubMed1987

Light and electron microscopic observation on the process of tissue calcification in a case of parathyroid adenoma.

Metastatic calcification in various organs in an autopsy case of parathyroid adenoma was studied by light and electron microscopy. Calcification was observed in kidney, lung, liver, heart, stomach, and thyroid. In the kidney, calcification was found in the tubules and glomeruli. In the liver, calcification was mainly found in Disse's space. The kidney, lung, liver, and heart were examined by electron microscopy. Four forms of early calcification were observed: 1) amorphous dense bodies within the mitochondria; 2) needle-shaped hydroxyapatite; 3) concentric laminated structure; and 4) cytoplasmic vesicles originating in hepatocytes. Calcium phosphate precipitates within the mitochondria were seen as amorphous dense bodies. When calcium phosphate precipitated in the cytoplasmic colloid gel, concentric laminated structures were formed due to Liesegang's phenomenon. Needle-shaped crystals in the amorphous dense bodies of the mitochondria were interpreted as a phenomenon of epitaxy. Calcification in Disse's space was thought to start in cytoplasmic vesicles which were derived from hepatocytes.

Adenoma↗
PubMed1987

Acute pancreatitis with cytomegalovirus infection.

An autopsy case of necrotizing pancreatitis with cytomegalovirus (CMV) infection is reported. A 50-year-old housewife was admitted because of malignant choroid plexus papilloma of the fourth ventricle. Serum amylase transiently elevated during irradiation and chemotherapy for brain tumor, one month before death. The patient died of a respiratory failure. At autopsy focal necrosis was mainly observed in the peripancreatic adipose tissue and occasionally in the parenchyma of the tail. Fibrosis and inflammatory infiltration was found around the necrosis and interstitium. Cytomegalic cells with intranuclear inclusions and/or cytoplasmic granules were observed frequently in the acini near the necrosis. Immunohistological study revealed CMV antigen in the cytomegalic cells. Herpesvirus-type particles were observed in the nucleus and cytoplasm of the cytomegalic cells. CMV infection of the acini are thought to cause necrotic changes in the pancreas.

Acute Disease↗
PubMed1987

[Primary amelanotic malignant melanoma of the vagina--a case report].

A case of a primary amelanotic melanoma of the vagina is reported. The patient was a 58-year-old Japanese female. A polypoid tumor was found on the lateral wall of the vagina and a cytologic examination of a scraping showed a few large atypical cells with cleaved nuclei and intranuclear vacuoles. A lateral junctional spread was histologically observed and stage II melanosomes were found in the cytoplasm. Two years after a radical operation, the patient died of a widespread melanotic metastases. The authors survey the number of incidences of malignant melanoma in the female genital organ. In Japanese women, melanoma is seen more frequently in the vagina than in the vulva, which is quite the opposite in cases of malignant melanomas of the genital organs in women of the United States and Europe.

Female↗
PubMed1987

[A case report of angiosarcoma of the breast].

The patient was a 24-year-old female, and had received 7-40 mg of prednisolone per day from the age of 19 because of SLE. The tumor occupied almost the entire right breast with a blue-red discoloration of the skin. Histological examination of the tumor disclosed angiosarcoma and a standard radical mastectomy was performed. No metastasis was seen in the regional lymph nodes. The patient received adjuvant chemotherapy with actinomycin D and remained well 26 months after the operation.

Adult↗
PubMed1986

Scanning electron microscopical studies of the arterial terminals in the red pulp of the rat spleen.

The arterial terminals in the red pulp of the perfused rat spleen were studied by scanning electron microscopy. The arterial terminals were tubular or funnel-shaped and ended openly in the splenic cord. No continuity was observed between the arteries and the sinuses. The endothelial cells of the arterial terminals extended their processes at the fringe of the terminal ends, and these endothelial processes were connected to the processes of the reticular cells of the splenic cord. In addition, large pores, measuring 0.5-8 microns in size, were found in the wall of the terminals adjacent to their end.

Animals↗
PubMed1986

Distribution of blood-borne particles of two different sizes in rat spleens.

Polystyrene microspheres 5 micron in diameter and Indian ink, consisting of particles 0.03 micron in diameter, were injected into the splenic artery in rats. The distribution of the polystyrene microspheres and the ink particles in the spleen were examined microscopically and morphometrically. The polystyrene microspheres appeared mainly in the red pulp, and the Indian ink particles mostly in the marginal zone, which functions as an immunological filter. (No arteries opened into the lymphoid follicles.)

Animals↗
PubMed1986

Adrenoleukodystrophy. Report of an autopsy case with adrenoleukomyeloneuropathy.

The patient was a 27-year-old man who developed spastic quadriplegia and cerebral disorders. Initial signs were gait disturbance, spastic paraplegia, and sphincter disturbance; these occurred when he was 21. Upon autopsy, the white matter of the brain and spinal cord showed diffuse demyelination, and the adrenal glands and right testis were atrophic. Cytoplasmic striations seen by light microscopy and trilamellar inclusions seen by electron microscopy were found in ballooned adrenocortical cells. Trilamellar inclusions were also observed in macrophages of the affected cerebral white matter. Biochemical analysis disclosed a high ratio (0.27) of hexacosanoic acid (C26:0) to docosanoic acid (C22:0) in cerebrosides and sulfatides of the cerebrum. The histological features as well as the result of biochemical analysis were those of classical adrenoleukodystrophy. However, the time of the onset of clinical signs and the duration of the disease were different in the present case from classical adrenoleukodystrophy. The case presented here was diagnosed as adrenoleukomyeloneuropathy, which is a variant of adrenoleukodystrophy.

Adrenoleukodystrophy↗
PubMed1986

Scanning electron microscopic features of spleen in the rat and human: a comparative study.

The marginal zone, white pulp and red pulp of rat and human spleen were studied by scanning electron microscopy and were compared. The marginal zone was observed in both species. The arterial termination in the marginal zone was quite different between both species. The follicular arteries terminated at the boundary of the white pulp and formed a vascular net regarded as the marginal sinus in rat. On the other hand, numerous arterial termini of the follicular and sheathed arteries were scatteringly found in the marginal zone in man. The central artery was surrounded with flat reticular cells in rat and human spleen. In the red pulp of rat, the arterial termini were funnel-shaped or tubular. The sheath of the sheathed arteries of man revealed a circumferential lamellar structure consisting of flat reticular cells, and most free cells of the sheath were washed away by perfusion.

Aging↗
PubMed1985

Myocardial lesions by Coxsackie virus B3 and cytomegalovirus infection in infants.

Immunofluorescent and electron-microscopic studies were performed to determine the distribution of viral antigens and particles and to clarify the relationship to myocardial lesions in two autopsy cases with generalized infection of Coxsackie virus B3 (CVB3) or cytomegalovirus (CMV). Case 1 was a full-term newborn female infant, without any congenital anomalies, who died of cardiac failure 10 days after birth. CVB3 was isolated from the blood before death. Necrosis of the muscle fibers was observed, frequently accompanying calcification. Numerous histiocytes and a few lymphocytes and neutrophils had infiltrated in and around the necrotic areas. Immunofluorescent study (IF) revealed CVB3 antigen in the muscle fibers and vascular endothelial cells. Case 2 was a female infant, born at 28 weeks of gestation, who died of fatal arrhythmia 50 days after birth. The infant had hemocephalus and a history of idiopathic respiratory distress and underwent an operation for patent ductus arteriosus. Cytomegalic cells were frequently found in the vascular endothelial cells in the myocardium and occasionally in muscle fibers. IF showed the presence of CMV antigen in both endothelial cells and muscle fibers. CVB3 and CMV antigens were detected predominantly in vascular endothelial cells rather than in the muscle fibers. Blood flow disturbance due to endothelial damage is a cause of the myocardial lesion in addition to the direct invasion of the muscle fibers by the virus.

Antigens, Viral↗
PubMed1985

An immunofluorescent study of generalized Coxsackie virus B3 infection in a newborn infant.

An autopsy case of a 10-day-old newborn with generalized infection of Coxsackie virus B3 (CBV3) was reported. CBV3 was isolated from the blood before death. The patient died of cardiac failure. An immunofluorescent study was carried out on autopsy specimens fixed in formalin and embedded in paraffin. CBV3 antigen was detected in the heart, brain, kidney, lungs, spleen, thymus, and pancreas. In the pancreas CBV3 antigen was predominantly seen in the islet cells. No CBV3 antigen was found in the liver and adrenal glands. Electron microscopic examination revealed virion-like particles, 20 nm in diameter, in the endothelial cells of the myocardium.

Antigens, Viral↗
PubMed1984

Nephrogenic adenoma of the ureter.

We report a case of nephrogenic adenoma in the left ureter. The patient presented with lumbago on the left side. A small calculus was incarcerated in the left ureter 4 cm. from the ureteropelvic junction and an adenoma, which resembled histologically the renal tubules, was observed in the ureter. A search of the world medical literature revealed 58 cases of nephrogenic adenoma, although only 1 case in the ureter has been reported previously.

Adenoma↗
PubMed1984

An immunofluorescent study of generalized infection of human cytomegalovirus in a patient with systemic lupus erythematosus.

An autopsy case of generalized infection of cytomegalovirus (CMV) in an adult with systemic lupus erythematosus is reported. CMV infection was histologically diagnosed postmortem by the presence of the characteristic cytomegalic cells with inclusion body. In the lungs, viral antigen was seen not only in the cytomegalic cells with inclusion body but also in the cells without intranuclear inclusion body in both of the frozen and the formalin-fixed paraffin sections. Viral antigen was also detected in frozen sections of the liver. CMV was isolated from the lung and liver.

Adult↗