No abstract available.
Drug Therapy* ; Stomach Neoplasms*

OBJECTIVES: As one of the possible mechanisms of viral evasion in the HPV-infected cervical cancer cells, the role of amino acid sequence change in epitope region has not been reported yet. In this study, sequence variations of HPV 16 E6, E7 gene, especially focused on epitope region, were analysed, the status of immunomodulatory factors were documented, and finally the possible correlation between the sequence variations and the loss of HLA class I expression was examined. METHODS: The entire ORF(open reading frame)s of HPV 16 E6, E7 were sequenced by the fluorescent dideoxy termination method. In addition proteins and transcripts of HLA-ABC, beta2-microglobulin(beta2-m), TAP (transporter associated with antigen processing), and LMP(large multi-functional proteasome) were evaluated by immunohistochemistry and RT-PCR, respectively in 40 clinical specimens of primary cervical cancer and 6 cervical cancer cell-lines. Medical records including pathologic reports were reviewed. RESULTS: Among the 27 cases confirmed as harboring HPV 16 DNA, only one(3.7%) found as a prototype. Among 11 kind of variants identified in total, 4 variants(5 nucleotide sites) which were never reported before has been found, registered firstly to GenBank. The most frequently found one(16 cases, 59.3%) contains D25E, N29S in E6, E7 region, respectively and the most common variation in E6, E7 ORFs found concurrently(p<0.05). Down-regulation of HLA-ABC and beta2-m was identified in 32(86.5%) and 35 cases(89.7%), respectively and transcripts of TAP, LMP were identified in over 85% of cases. However, there was no significant difference in HPV 16 infection, D25E in E6 and so on between HLA-ABC, beta2-m positive and negative groups. The well-known clinicopathologic parameters did not correlate with sequence variations and immunomodulatory factors. Five sequence variations in HPV 16 E6, E7 ORFs that were not previously reported worldwide were found, registered firstly to GenBank. CONCLUSION: It seems that multiple mechanisms are operated in down-regulation of HLA class I molecules and the phenotypic profile of immunomodulatory factors seems to be unrelated in vivo to the naturally occurring HPV 16 E6, E7 variations in epitope region.
Amino Acid Sequence ; Animals ; Databases, Nucleic Acid ; DNA ; Down-Regulation ; Ecthyma, Contagious ; Female ; Human papillomavirus 16 ; Humans* ; Immunohistochemistry ; Medical Records ; Open Reading Frames ; Uterine Cervical Neoplasms*

No abstract available.
Arteries* ; Bronchopulmonary Sequestration*

PURPOSE: Pilomatrixoma is a benign, usually asymptomatic tumor. It presents clinically as a solitary superficial subcutaneous nodule measuring between 0.5 cm and 5 cm in diameter on the head or upper extremeties and has not been reported after skin graft. The objective of this article is to report our experience in treating pilomatrixoma which occurred after split thickness skin graft on the lower extremity. METHODS: A 56-year-old female was treated in August 2005 with a 0.5 X 0.5 cm firm subcutaneous nodule at recipient site of split thickness skin graft on the left medial thigh. The tumor was successfully removed by complete excision and histologic examination was followed. RESULTS: The diagnosis was pilomatrixoma which was characterized by a dual population of proliferating basophilic cells and diagnostic shadow cells. CONCLUSION: The tumor was successfully treated by complete resection. The authors report this very rare case of pilomatrixoma which occurred at recipient site of split thickness skin graft.
Basophils ; Diagnosis ; Female ; Head ; Humans ; Lower Extremity ; Middle Aged ; Pilomatrixoma* ; Skin* ; Thigh ; Transplants*

No abstract available.

A case of nevus syringocystadenoma papilliferus which resembles eclinically as nevus sebaceus in 17 year-old female is presented. The histopathological examination revealed characteristic features of the disease.
Adolescent ; Female ; Humans ; Nevus

No abstract available.

No abstract available.

No abstract available.
Blood Platelets* ; Humans ; Platelet Aggregation* ; Plateletpheresis* ; Tissue Donors*

The hypertensive lower esophageal sphincter(LES)(mean LES pressure>45mmHg; LES relaxation>75%;normal peristalsis) is an uncommon primary esophageal motor disorder associated with chest pain, dysphagia and globus sensation. We carried out this study to evaluate clinical features, esophageal pressure profiles, endoscopic ultrasonographic findings, and assess the effect of oral nifedipine(30 mg/day for 8 weeks) in patients with hypertensive LES(mean age 53.8 years, M: F:=2:7) and l3 controls(mean age 47.5 years, M:F=4:9), Chief complaints were chest pain(77.8%), dysphagia(33.3%) and globus sensation(22.2%). Esophageal manometry showed a significant(p<0.01) increase in LES pressure and higher trend of residual pressure and body contraction amplitude in patients compared with controls. Two cases of nutcracker esophagus and one case of nonspecific esophageal motor disorder were associated with hypertensive LES patients by eeophageal manometry. Five patients were examined by endoscopic ultrasonography(EUS). Three of them showed a normal ultrasonic structure of the wall of the gastro-esophageal junction. Focal and/ or diffuse thickening of muscularis propria were observed in remaining 2 patients. Oral nifedipine significantly decreased the LES pressure and alleviated most of dysphagia and chest pain in patients with normal EUS finding. In conclusion, hypertensive LES was a heterogenous esophageal motor disorder characterized by high LES pressure, residual pressure and body contraction amplitude. The clinical relevance of endoscopic ultrasonographic finding is yet to be determined, but it may be speculated that nifedipines lack of effect on esophageal pressure profiles in some patients is responsible for thickening of muscularis propria in the area of lower esophageal sphincter. Collecting further data regarding treatment response according to EUS finding is required to validate our speculation.
Chest Pain ; Deglutition Disorders ; Esophageal Motility Disorders ; Esophageal Sphincter, Lower* ; Humans ; Manometry ; Nifedipine ; Sensation ; Thorax ; Ultrasonics