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  • 1990-1994  (10)
  • 1930-1934
  • Immunohistochemistry  (8)
  • Magnetic resonance imaging
  • 1
    Electronic Resource
    Electronic Resource
    Proliferative cell nuclear antigen expression in follicular tumours of the thyroid with special reference to oxyphilic cell lesions (1994)
    Springer
    Virchows Archiv 424 (1994), S. 533-537 
    Details
    ISSN: 1432-2307
    Keywords: Thyroid ; Follicular tumour ; Oxyphilic cell tumour ; PCNA ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The expression of proliferative cell nuclear antigen (PCNA) in follicular tumours of the thyroid was examined by immunohistochemistry. Both usual nonoxyphilic cell follicular tumours (non-OCT) and oxyphilic cell tumours (OCT) were subdivided into benign, indeterminate, encapsulated carcinoma, and widely invasive carcinoma types. Among non-OCT the percentages of PCNA-positive cells in benign tumours, encapsulated carcinomas, and widely invasive carcinomas was 2.5%–8.6%, 11.8%–39.1%, and 18.6%–20.0%, respectively. There was a statistically significant difference between benign tumours and encapsulated or widely invasive carcinomas, as in previous studies. A value of 10% was appropriate to distinguish benign from malignant lesions. PCNA-positive cells in indeterminate-type non-OCT were not significantly different from those in benign tumours, ranging from 4.3%–19.6%, and occurring at more than 10% in three of six tuours. Among OCT the positivity was less than 10% in benign tumours (4.5%–7.8%) and more than 10% in malignant tumours (14.1%–35.9%) and all the eight indeterminate tumours (12.5%–27.3%), with a statistically significant differences between the benign tumour and each of the latter types. These results indicate that the examination of PCNA is valuable in diagnosis of thyroid follicular tumours and that the use of similar diagnostic criteria may be warranted in both non-OCT and OCT.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00191440
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  • 2
    Electronic Resource
    Electronic Resource
    An immunohistochemical study of the extracellular matrix in oral squamous cell carcinoma and its association with invasive and metastatic potential (1994)
    Springer
    Virchows Archiv 424 (1994), S. 257-266 
    Details
    ISSN: 1432-2307
    Keywords: Extracellular matrix ; Immunohistochemistry ; Squamous cell carcinoma ; Invasiveness ; Metastasis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The expression of extracellular matrices (ECMs) laminin (LN), type IV collagen (IV C), heparansulphate proteoglycan (HS-PG), fibronectin (FN), tenascin (TN), decorin and vitronectin (VN) was examined immunohistochemically in 112 primary tumours and 29 metastatic cervical lymph nodes in oral squamous cell carcinoma (OSCC). In highly invasive primary tumours, the expression of LN, IV C and HS-PG in the basement membrane along the tumour-stroma borderline and the expression of decorin and VN in the tumour stroma at the invasive site were all significantly decreased. The expression of FN and TN in the tumour stroma at the same site was markedly increased. In peritumour stroma in metastatic lymph nodes, LN, IV C, HS-PG, decorin and VN were weakly expressed, while FN and TN were strongly expressed. Thus, the staining pattern of the ECMs in the metastatic lymph nodes was similar to that in highly invasive primary tumours. Furthermore, in primary tumours of metastatic cases, the expression of LN, IV C, HS-PG, decorin and VN obviously decreased, while the expression of FN and TN increased when compared with those of the non-metastatic cases. The investigation of ECMs in OSCC was valuable in predicting tumour behaviour.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00194609
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  • 3
    Electronic Resource
    Electronic Resource
    Membranous lipodystrophy (Nasu-Hakola disease) with thalamic degeneration: report of an autopsied case (1991)
    Springer
    Acta neuropathologica 82 (1991), S. 414-419 
    Details
    ISSN: 1432-0533
    Keywords: Membranous lipodystrophy ; Thalamic degeneration ; Neuropathology ; Autopsy ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An autopsied case of membranous lipodystrophy (Nasu-Hakola disease, NHD) with thalamic degeneration was reported. A 34-year-old Japanese man was diagnosed as having NHD by bone biopsy prior to the onset of clinical symptoms. His maternal grandfather and paternal grandmother are cousins, but this family history is negative for NHD. He developed frontal lobe syndrome at the age of 35 with progressive dementia, and died of acute renal failure at the age of 46. Gross inspection of the brain detected atrophy and softening of the cerebral white matter, predominantly in the frontal lobe. Microscopically, numerous spheroids, predominant fibrillary gliosis with less prominent demyelination “dissociation glio-myélinique” and scanty sudanophilic lipid droplets were observed, indicating the sclerosing type of NHD. An unusual pathological finding in this case was selective involvement of the thalamic nuclei with preservation of the other gray matter except for focal cortical necrosis. The topography of the affected thalamic nuclei is similar to that of systemic thalamus degeneration. An association with thalamic degeneration in NHD has not been previously reported. The present case suggests that NHD also affects the thalamus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00296554
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  • 4
    Electronic Resource
    Electronic Resource
    Presence of chondroid bone on rat mandibular condylar cartilage (1993)
    Springer
    Anatomy and embryology 187 (1993), S. 9-15 
    Details
    ISSN: 1432-0568
    Keywords: Chondroid bone ; Collagen ; Immunohistochemistry ; Mandibular condylar cartilage ; Secondary cartilage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Immunohistochemical techniques were used to examine the locations of type I and type II collagens in the the most anterior and the posterosuperior regions of the mandibular condylar cartilages of young and adult rats. Large ovoid and polygonal cells, which were morphologically different from any of the neighboring cells, e.g., mature or hypertrophied chondrocytes, osteoblasts, or fibroblasts, were observed at the most anterior margin of the young and adult condylar cartilages. In the extracellular matrix (ECM) of this area, an eosinophilic staining pattern similar to that in bone matrix was observed, while the peripheral ECM showed basophilic staining and very weak reactivity to Alcian blue. Immunohistochemical examination showed that the ECM was stained heavily and diffusely for type I collagen, while a staining for type II collagen was faint and limited to the peripheral ECM. Two different staining patterns for type II collagen could be recognized in the ECM: one pattern revealed a very faint and diffuse reaction while the other showed a weak rim-like reaction. These staining patterns were markedly different from those in the cartilaginous cell layer in the posterosuperior area of the condylar secondary cartilage, which showed faint staining for type I collagen and a much more intense staining for type II collagen. These observations reveal the presence of chondroid bone, a tissue intermediate between bone and cartilage tissues, in the mandibular condylar cartilage, and suggest the possibility of osteogenic transdifferentiation of mature chondrocytes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00208192
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  • 5
    Electronic Resource
    Electronic Resource
    Localization of H+-ATPase and carbonic anhydrase II in ameloblasts at maturation (1994)
    Springer
    Calcified tissue international 55 (1994), S. 38-45 
    Details
    ISSN: 1432-0827
    Keywords: Vacuolar-type H+-ATPase ; Carbonic anhydrase II ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract The localization of vacuolar-type H+-ATPase and carbonic anhydrase II (CA II) in rat incisor enamel organs at maturation was examined by light and electron microscopy. The immunoreactivity for both vacuolar-type H+-ATPase and CA II was intense on the ruffled border of ruffle-ended ameloblasts (RA), but moderate at the distal end of smooth-ended ameloblasts (SA). Immuno-gold particles indicated that CA II was not confined to the ruffled border of RA alone, but also distributed in the cytoplasm of RA and SA. These findings suggest that RA may secrete protons produced by CA II via the ruffled border into enamel by active transport of vacuolar-type H+-ATPase. Secreted protons may activate hydrolytic enzymes to degrade the organic components of enamel matrix. Vacuolar-type H+-ATPase on vesicles of SA suggests that a specific configuration of ruffled borders in RA may be formed by the fusion of vesicle membranes in the distal end of cytoplasm of SA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00310167
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  • 6
    Electronic Resource
    Electronic Resource
    Differential distribution of 68 Kd and 200 Kd neurofilament proteins in the gerbil hippocampus and their early distributional changes following transient forebrain ischemia (1992)
    Springer
    Experimental brain research 89 (1992), S. 31-39 
    Details
    ISSN: 1432-1106
    Keywords: Hippocampus ; Delayed neuronal death ; Neurofilament ; Immunohistochemistry ; Gerbil
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The distribution of neurofilament (NF) proteins was studied immunohistochemically in the gerbil hippocampus with antibodies against NF68 (68 Kd molecular weight) and NF200 proteins, and changes in the distribution of NF proteins after transient ischemia were observed in order to investigate the temporal correlation between NF and delayed neuronal death. In the normal hippocampus, NF68-like immunoreactivity (NF68-LI) was densely distributed in nerve processes in CA2, CA3 and the hilus of the dentate gyrus but was less intense in CA1. In contrast, processes with NF200-LI appeared to be evenly distributed in CA1, CA2, CA3 and the dentate gyrus. Mongolian gerbils were subjected to transient ischemia for 5 min by bilateral carotid occlusion and subjected to immunohistochemistry 1, 2, 3 and 4 days after ischemia. Following transient ischemia, prior to neuronal cell death, the intensity of both NF68-LI and NF200-LI decreased in the whole hippocampal formation. This decrease was more obvious in the case of NF68-LI than NF200-LI. Four days after ischemia, when neuronal death of CA1 pyramidal cells had occurred, processes in CA1, particularly 68 Kd components, showed marked decreases in number and staining intensity, although processes in most layers of CA2, CA3 and the dentate gyrus appeared to be stained similarly to normal brain. Since NF68 protein is considered to be the major component of NF proteins and NF200 is an associated accessory protein, the current observations suggest that the poor distribution of NF68 in CA1 and the early loss of NF proteins may be closely related to selective vulnerability of CA1 pyramidal cells and delayed neuronal death.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00228998
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  • 7
    Electronic Resource
    Electronic Resource
    Magnetic resonance imaging and brain-stem auditory evoked potentials in neuro-Behcet's disease (1994)
    Springer
    Journal of neurology 241 (1994), S. 481-486 
    Details
    ISSN: 1432-1459
    Keywords: Neuro-Behcet's disease ; Magnetic resonance imaging ; Brain-stem auditory evoked potentials
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We studied central nervous system lesions in patients with neuro-Behcet's disease using magnetic resonance imaging (MRI) of the brain and recording of brain-stem auditory evoked potentials (BAEPs). MRI revealed abnormal findings in seven of eight patients. MRI studies demonstrated extensive regions with high intensity signal in the brain stem and/or basal ganglia on T2-weighted images obtained during the acute stage of the disease in three patients. One of these patients had a strongly gadolinum-enhanced round lesion in the lower pons. In four of the other five patients with chronic disease, brain-stem atrophy was observed on T1-weighted images. Atrophic changes were more severe in the brain stem than in the cerebellum. Abnormal BAEPs were observed in three patients and consisted of prolongation of interpeak latency of waves III-V and defects of wave III or V. Abnormal BAEPs were recorded in patients with severe inflammatory changes or progression of atrophic changes in the brain stem. Our findings show that MRI and BAEPs are useful in detecting the presence and assessing the degree of neurological involvement in patients with neuro-Behcet's disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00919709
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  • 8
    Electronic Resource
    Electronic Resource
    Immunoreactive atrial natriuretic peptide in the fish heart and blood plasma examined by electron microscopy, immunohistochemistry and radioimmunoassay (1990)
    Springer
    Cell & tissue research 260 (1990), S. 235-247 
    Details
    ISSN: 1432-0878
    Keywords: Atrial natriuretic peptide ; Heart ; Freshwater fish ; Seawater fish ; Immunohistochemistry ; Ultrastructure ; Radioimmunoassay ; Cyprinus carpio (Teleostei) ; Narke japonica (Elasmobranchii) ; Eptatretus burgeri (Cyclostomata)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The immunoreactivity of atrial natriuretic peptide and ultrastructure of cardiocytes were examined in 5 species each of freshwater and seawater teleosts, as well as in 2 species each of elasmobranchs and cyclostomes. Immunoreactivity was strong in the atria of Cyprinus carpio, Anguilla japonica and Conger myriaster, rather weak in atria of Channa maculata, Lepomis macrochirus, Salmo gairdneri, Oplegnathus fasciatus and Eptatretus burgeri, very weak in atria of Pagrus major, Trachurus japonicus and Triakis scyllia, and not detectable in atria of Hexagrammos otakii, Narke japonica and Lampetra japonica. The immunoreactivity of the atrial cardiocytes was generally stronger in freshwater than seawater fish. Ventricular immunoreactivity was detected only in 7 species, always being weaker than that observed in the atrium. Ultrastructurally, however, secretory granules were found in atria and ventricles of all species examined, being more frequent in the former than the latter. By radioimmunoassay, immunoreactive ANP was detected in the extracts of blood plasma and both atrial and ventricular tissues of all species examined. There were no statistically significant differences in the values between freshwater and seawater species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00318627
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  • 9
    Electronic Resource
    Electronic Resource
    Evaluation of an in vivo labeling method of red blood cells with99mTc-pertechnetate in the head and neck region (1994)
    Springer
    Oral radiology 10 (1994), S. 35-42 
    Details
    ISSN: 1613-9674
    Keywords: 99mTc-RBC method ; Angiomatous lesions ; Magnetic resonance imaging ; Metal artifact ; Dental prostheses
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Seventeen cases in which red blood cells (RBCs) were labeled with99mTc (99mTc-RBC method) are reviewed to confirm the vascular nature of lesions. This study was undertaken to see whether the99mTc-RBC method is useful in terms of detecting angiomatous lesions, and also to determine the indications for this method. In one case, total removal revealed a good, correlation between the range of uptake and the actual tumor size. MR images definitively demonstrated tumor location and extension. When hemangioma is suspected, MR examination is the preferred modality to determine tumor extension, tumor mass, and invasion into the surrounding tissue. However, when it is suspected that the MR image is poor due to bulky metal artifacts, as in the case of dental prostheses, the99mTc-RBC method should be used because this method is only slightly influenced by metal artificts. In addition, this method should be applied when whole body screening is needed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02390714
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  • 10
    Electronic Resource
    Electronic Resource
    Immunohistochemical observations of dividing cells in olfactory epithelium using anti-BrdU antibody (1991)
    Springer
    European archives of oto-rhino-laryngology and head & neck 248 (1991), S. 298-301 
    Details
    ISSN: 1434-4726
    Keywords: Axotomy ; Olfactory cells ; Immunohistochemistry ; Bromodeoxyuridine ; Dividing cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To examine the dividing cells in the olfactory epithelium, an experiment using a novel immunohistochemical technique with bromodeoxyuridine (BrdU) was performed. Tissue specimens were obtained from the olfactory epithelium of guinea pigs at days 7 and 21 after olfactory nerve axotomy. BrdU uptake was detected in the epithelial cell layer directly above the basal cell layer rather than in the basal cells per se. The BrdU-immunoreactive cells were found more numerously at 7 days than at 21 days after axotomy. The basal cells showed no immunoreaction to the anti-BrdU antibody on either day. The cells reacting with the anti-BrdU antibody also showed no reaction to the anti-cytokeratin antibody used to identify the basal cells. These findings indicate that the cells showing mitotic activity have characteristics different from those of basal cells, which has been considered previously to be the precursors of regenerating olfactory receptor cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00176759
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