Intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) are weakly expressed in normal glomerular cells and vascular endothelial cells, but not in tubules. Granzyme B is a cytotoxic granule present in activated cytotoxic T cells and natural killer cells. To determine the effect of ICAM-1 and VCAM-1 expression and granzyme B-positive cells on histologic grade of rejection, we performed the immunohistochemical study on 19 renal biopsy specimens and one nephrectomy specimen from 14 patients with acute renal allograft rejection using monoclonal antibodies against theses proteins. According to severity of rejection based on Banff classification, three biopsies were classified as borderline, 4 grade I, 12 grade II, and 1 grade III. In all the cases with acute rejection, ICAM-1 and VCAM-1 were expressed in the tubular epithelial cells. The numerical score of ICAM-1 in the tubular epithelial cells was 1.0 in borderline cases, 1.3 0.4 in grade I cases, 2.2 0.8 in grade II cases, and 3.0 in grade III case. The staining intensity of ICAM-1 in the tubular epithelial cells was increased in accordance with histologic rejection grade (P<0.05). The staining intensity of ICAM-1 and VCAM-1 in the renal tubular epithelial cells was increased in accordance with the number of T lymphocytes in the renal parenchyme (r=0.46; P<0.05, r=0.61; P<0.01). The number of granzyme B-positive cells was 6.4 1.6/HPF in borderline cases, 8.1 2.5 in grade I cases, 19.6 11.7 in grade II cases, and 53 in grade III case. The number of T lymphocytes and granzyme B-positive cells was also increased in accordance with histologic rejection grade (P<0.05). These results suggest that ICAM-1 and granzyme B-positive cells may play an important role in the induction of renal allograft rejection and that the grading of severity of these parameters may be useful to predict the prognosis of renal allograft.
Allografts* ; Antibodies, Monoclonal ; Biopsy ; Classification ; Endothelial Cells ; Epithelial Cells ; Granzymes* ; Humans ; Intercellular Adhesion Molecule-1 ; Killer Cells, Natural ; Nephrectomy ; Prognosis ; T-Lymphocytes ; Vascular Cell Adhesion Molecule-1

BACKGROUND: This study investigates the prevalence of human papillomavirus (HPV) 52 and 58 genotypes among women residing in Busan, and the expression of p16 and p53 proteins in cervical neoplasia with HPV 52 and 58 infections. METHODS: A total of three hundred fifteen cases were analyzed using the HPV DNA chip test for HPV genotypes, and of these, we retrospectively examined p16 and p53 expression in 62 cases of cervical tissues infected with HPV 52 and 58 using immunohistochemistry. RESULTS: HPV 52 and 58 genotypes were identified in 62 (54.9%) out of 113 high-risk, HPV-infected cases. Of the cases examined, there were 19 single HPV 52 infections (16.8%), 23 single HPV 58 infections (20.4%), 4 multiple HPV 52 infections (3.5%), and 16 multiple HPV-58 infections (14.2%). Immunoreactivity of p16 and p53 was observed in 41 (66.1%) and 23 (37.1%) of the 62 cases of cervical neoplasia infected with HPV 52 and 58 genotypes, respectively. CONCLUSIONS: This study demonstrates a high prevalence of HPV 52 and 58 genotypes, in addition to HPV 16, among high-risk strains of cervical neoplasia in Korea. These findings suggest that development of more vaccines would be beneficial for the prevention of the various HPV genotypes.
Busan ; Cyclin-Dependent Kinase Inhibitor p16 ; Female ; Genotype* ; Human papillomavirus 16 ; Humans* ; Immunohistochemistry ; Korea ; Oligonucleotide Array Sequence Analysis ; Prevalence ; Retrospective Studies ; Tumor Suppressor Protein p53 ; Vaccines

Glomerulosclerosis represents a pathological hallmark of progressive glomerular injury. Mesangial cell proliferation and accumulation of extracellular matrix (ECM) proteins in the mesangial area frequently precede the formation of glomerulosclerosis. To understand the role of platelet-derived growth factor (PDGF) and ECM in the development of glomerulosclerosis, we examined the expression of type IV collagen, laminin, fibronectin, and PDGF in 45 renal biopsies diagnosed with IgA nephropathy (IgAN) using a standard peroxidase antiperoxidase (PAP) technique. Normal control specimens were obtained from four nephrectomy specimens diagnosed with renal cell carcinoma. As compared with normal controls, type IV collagen increased in 68%, fibronectin in 73%, laminin in 51%, and PDGF in 36% of patients with IgA nephropathy. The staining intensity of PDGF, type IV collagen, and fibronectin increased significantly in cases with moderate to severe mesangial cell proliferation than cases without. In the areas of glomerulosclerosis, the staining intensity of type IV collagen, laminin, and PDGF decreased, whereas that of fibronectin increased. These results suggest that mesangial cell proliferation in relation to increased PDGF expression in IgAN could stimulate the expression of type IV collagen, laminin and fibronectin leading to mesangial expansion. They also suggest that ECM decreased in advanced glomerulosclerosis. Deposition of fibronectin, which originates mainly from the blood stream, increases during the course of progressive glomerulosclerosis, whereas other ECM components decrease in advanced glomeruloslresosis.
Biopsy ; Carcinoma, Renal Cell ; Collagen Type IV ; Extracellular Matrix* ; Fibronectins ; Glomerulonephritis, IGA* ; Humans ; Immunoglobulin A* ; Laminin ; Mesangial Cells ; Nephrectomy ; Peroxidase ; Platelet-Derived Growth Factor* ; Rivers

Accumulation of leukocytes within the glomerulus is a key event in the pathogenesis of glomerulonephritis. This process is mediated by pairs of adhesion molecules. We have examined the expression pattern of selectins (E and P), intercellular adhesion molecule-1 (ICAM-1), and vascular cell adhesion molecule-1 (VCAM-1) in 30 renal biopsies with IgA nephropathy, diffuse crescentic glomerulonephritis, and minimal change disease. Normal controls were obtained from four nephrectomy specimens with renal cell carcinoma. ICAM-1 expression was significantly increased in the glomerular endothelial and mesangial cells in cases with IgA nephropathy compared with normal controls. VCAM-1 was expressed in glomerular mesangial cells in all cases with IgA nephropathy and diffuse crescentic glomerulonephritis, but faintly expressed in 3 cases with minimal change disease and not expressed in normal controls. P-selectin was faintly expressed in the glomeruli in cases with IgA nephropathy and diffuse crescentic glomerulonephritis. E-selectin was only expressed in the vascular endothelium in one case with IgA nephropathy and in the other with diffuse crescentic glomerulonephritis. ICAM-1 and VCAM-1 were strongly expressed in the crescents. However, selectin was not expressed in the crescent. These results suggest that adhesion molecules, particularly ICAM-1 and VCAM-1, play an important role in the pathogenesis of glomerular damage and crescent formation in primary glomerular diseases.
Biopsy ; Carcinoma, Renal Cell ; E-Selectin ; Endothelium, Vascular ; Glomerulonephritis* ; Glomerulonephritis, IGA* ; Immunoglobulin A* ; Intercellular Adhesion Molecule-1 ; Leukocytes ; Mesangial Cells ; Nephrectomy ; Nephrosis, Lipoid* ; P-Selectin ; Selectins ; Vascular Cell Adhesion Molecule-1

Sinonasal undifferentiated carcinoma (SNUC) is a rare, aggressive neoplasm arising in the nasal cavity and paranasal sinuses. We report a case of SNUC in an old woman. The tumor was located at the nasal cavity and ethmoid sinus, extending to the cranial cavity. The nasopharynx was free from the tumor. Microscopically, the tumor formed nests or sheets containing medium-sized cells with small amounts of eosinophilic cytoplasm. High mitotic rates and tumor necrosis were characteristic. There was no evidence of glandular or squamous differentiation. The tumor was focally weak positive for cytokeratin, but negative for vimentin, leukocyte common antigen, S-100 protein, chromogranin, synaptophysin and neuron specific enolase. Epstein Barr Virus EBER-1 was not detected by in situ hybridization. SNUC is a highly aggressive tumor and must be distinguished from less aggressive sinonasal neoplasms.
Antigens, CD45 ; Carcinoma* ; Cytoplasm ; Eosinophils ; Ethmoid Sinus ; Female ; Herpesvirus 4, Human ; Humans ; In Situ Hybridization ; Keratins ; Nasal Cavity ; Nasopharynx ; Necrosis ; Paranasal Sinuses ; Phosphopyruvate Hydratase ; S100 Proteins ; Synaptophysin ; Vimentin

Vascular rejection injures the vascular endothelium in cardiac allografts in the absence of significant intramyocardial lymphocytic infiltration. When compared with cellular rejection, acute vascular rejection occurs earlier after transplantation, and is associated with high frequency of allograft loss. We describe a case of acute vascular rejection that occurred 11 months after heart transplantation. Graft failure was associated with active vasculitis in the coronary arteries and pericardial arteries, and extensive coagulation necrosis of myocardium. The extreme rarity of late onset of acute vascular rejection in a cardiac allograft prompted us to write this report.
Allografts ; Arteries ; Coronary Vessels ; Endothelium, Vascular ; Heart Transplantation* ; Heart* ; Myocardium ; Necrosis ; Transplantation ; Transplants ; Vasculitis

PURPOSE: Anaplastic thyroid carcinoma is characterized with rapid growing mass of the neck and early infiltration into the surrounding tissue. Because of its advanced presentation in elderly patients with poor general condition, difficulty in diagnosis and lack of effective treatment, it is one of the most lethal cancers in human. The aim of this study was to investigate the clinicopathologic character of anaplastic thyroid carcinoma and analyze the prognostic factors affecting survivals. METHODS: Twenty patients diagnosed anaplastic thyroid carcinoma in Seoul National University Hospital between 1985 and 1999 were reviewed retrospectively. RESULTS: The most common symptom was a rapidly enlarging neck mass. Ten (55.5%) of 18 patients had a concomitant well differenciated thyroid carcinomas and 5 (27.8%) patients had benign thyroid disease on pathologic features. The median survival was 5.5 months and the 2-year survival rate was 27.3%. Among several factors analyzed, tumor size smaller than 5 cm (p<0.001), absence of distant metastases at presentation (p=0.020), patients selected for curative surgical resection (p=0.002), and postoperative radiotherapy (p=0.003) were associated with prolonged survival time. CONCLUSION: In the selected patients(tumor size <5 cm, the absence of distant metastases at presentation, young age (<55), curative surgical resection and adjuvant radiotherapy may be associated with an increased survival time.
Aged ; Diagnosis ; Humans ; Neck ; Neoplasm Metastasis ; Radiotherapy ; Radiotherapy, Adjuvant ; Retrospective Studies ; Seoul ; Survival Rate ; Thyroid Carcinoma, Anaplastic* ; Thyroid Diseases ; Thyroid Neoplasms

We report a 33-year-old man with AIDS dementia complex, which is one of the most common neurologic complica-tion of HIV-1 infection. The man presented with mild psychomotor slowing and episodic loss of consciousness about 5 years after the detection of the HIV-1 infection. His symptoms included forgetfulness, concentration difficulties, apathy, and psychomotor retardation which progressed rapidly evolving into the characteristic features of terminal HIV-1-asso-ciated dementia complex, such as severe dementia, mutism, incontinence, and paraparesis before death. Brain MRIrevealed diffuse confluent high signal intensity lesions in the subcortical white matter on the T2 weighted image. HIV encephalitis (AIDS dementia complex) was confirmed by a brain autopsy.
Acquired Immunodeficiency Syndrome ; Adult ; AIDS Dementia Complex* ; Apathy ; Autopsy* ; Brain ; Dementia ; Encephalitis ; HIV ; HIV-1 ; Humans ; Mutism ; Paraparesis ; Unconsciousness

No abstract available.
Joint Capsule* ; Joints* ; Thumb*

PURPOSE: The histological changes in the upper pole of excised duplex kidneys with ureterocele were reviewed and the histological variations with respect to age and ureterocele position were assessed. MATERIALS AND METHODS: During the last ten years, 10 patients with duplex system ureterocele underwent an upper pole nephrectomy. A total of 10 specimens, of which 4 and 6 were diagnosed at younger than 1 year old and older than 1 year old, and 5 each involving intravesical and ectopic locations, respectively, were available for independent review by a single pathologist. Histological lesions were classified into the 5 categories; chronic interstitial inflammation, interstitial fibrosis, tubular atrophy, glomerulosclerosis and dysplasia. Each category was divided into moderate/severe histological lesions (greater than 25% involvement) and minimal/mild lesions (25% or less involvement). RESULTS: Chronic interstitial inflammation, interstitial fibrosis, tubular atrophy, glomerulosclerosis and dysplasia in each of the specimens were graded as moderate/severe (greater than 25% involved) in 50, 50, 60, 10 and 80% of the subjects, respectively. The ureteroceles detected at an early stage were not associated with less severe upper pole histological lesions. Also, no pathological differences were observed when comparing specimens according to the ureteroceles positions. CONCLUSIONS: It appears that the histological lesions observed may not be progressive or reversible. Therefore, it is suggested that enhancement of the upper pole renal function seems unjustified in the light of the histological evidence, and the goals of clinical management should focus on preventing complications and secondary procedures.
Atrophy ; Fibrosis ; Humans ; Inflammation ; Kidney* ; Nephrectomy ; Ureterocele*