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Pei RJ, Liu YH, Su B, Yeh CC, Lee KY, Yeh KT, Hsu YH, Ho CC, Lai YS. Do the CK18 related proteins change in general in epithelial cancers? Res Commun Mol Pathol Pharmacol 2002; 108:253-60. [PMID: 11913716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
The modulation of cytokeratin 18 during tumor transformation in hepatoma had been previously recognized through a series of biochemical and immunological approaches. Expression of cytokeratin 18 in transitional cell carcinoma comparing with hepatoma was investigated using the hepatoma transformation model. CK18 related molecules were found. In the present study, we design various epithelial cancers with the same model. CK18 related molecules were all evident. Therefore, we suggest that CK18 related proteins would play an important role in tumorigenesis of epithelial cancers.
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Affiliation(s)
- R J Pei
- Department of Pathology, School of Medicine, China Medical College, Taichung, Taiwan
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52
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Chung JG, Yeh KT, Wu SL, Hsu NY, Chen GW, Yeh YW, Ho HC. Novel transmembrane GTPase of non-small cell lung cancer identified by mRNA differential display. Cancer Res 2001; 61:8873-9. [PMID: 11751411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
The technique of differential display was used previously to profile the gene expression patterns of non-small cell lung cancer, and several genes differentially expressed were thus identified. In this report, we demonstrate that a DNA fragment of 347-bp length, up-regulated in tumor tissues, showed 100% sequence similarity to human cDNA FLJ20693 for a 370-residue protein. The gene product of cDNA FLJ20693 was postulated to be a shorter isoform of transmembrane GTPase, termed TG370, based upon the results of searching for sequence homology. The nucleotide sequence alignment also indicated that the cDNA FLJ20693 and the cDNA for 741-residue human mitofusin 1 (TG741) possibly resulted from the event of alternative splicing from which a 127-bp region was retained in the latter. Analysis of the genome sequence confirmed the speculation that both cDNAs were mapped to the same chromosomal position composing of 18 exons, of which the 127-bp region of TG741 constituted exon 11. The alternative splicing in all lung cancer cell lines was also observed to occur nearly in all tissue specimens examined. The up-regulated expression of transmembrane GTPase was subsequently found in tumor tissues from at least five of seven non-small cell lung cancer patients. Also, a distinct PCR product was initially detected in cell line H520, and further sequence analysis identified the presence of the 86-bp region mapped to the genome sequence immediately followed by exon 10. To evaluate the retention of 86-bp region, it was found that, besides the predicted 486-bp product, an unexpected 332-bp product was concomitantly observed and identified as the result of exon 8 deletion. The expression and subcellular localization of the full-length TG741 and other shorter isoforms were detected by flow cytometry using three polyclonal antibodies. It was concluded that the full-length TG741 located at plasma membrane with its NH(2)-terminal domain exposed extracellularly and the shorter isoforms retained at cytosol. Finally, the up-regulation of transmembrane GTPase in tumor tissues was further illustrated using immunohistochemical staining.
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MESH Headings
- Adenocarcinoma/enzymology
- Adenocarcinoma/genetics
- Alternative Splicing
- Amino Acid Sequence
- Animals
- Base Sequence
- Carcinoma, Non-Small-Cell Lung/enzymology
- Carcinoma, Non-Small-Cell Lung/genetics
- Carcinoma, Squamous Cell/enzymology
- Carcinoma, Squamous Cell/genetics
- Cell Membrane/enzymology
- Cytosol/enzymology
- DNA, Complementary/genetics
- DNA, Complementary/metabolism
- DNA, Neoplasm/genetics
- DNA, Neoplasm/metabolism
- Female
- Flow Cytometry
- GTP Phosphohydrolases/biosynthesis
- GTP Phosphohydrolases/genetics
- GTP Phosphohydrolases/metabolism
- Gene Expression Profiling
- Gene Expression Regulation, Enzymologic
- Gene Expression Regulation, Neoplastic
- Humans
- Immunohistochemistry
- Isoenzymes/genetics
- Isoenzymes/metabolism
- Lung Neoplasms/enzymology
- Lung Neoplasms/genetics
- Mice
- Mice, Inbred BALB C
- Molecular Sequence Data
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Sequence Homology, Amino Acid
- Tumor Cells, Cultured
- Up-Regulation
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Affiliation(s)
- J G Chung
- Department of Microbiology, School of Medicine, Institute of Associated Chinese and Western Medicine, China Medical College, Taichung 40421, Taiwan, Rebublic of China
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53
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Hsiao PJ, Tsai KB, Lai FJ, Yeh KT, Shin SJ, Tsai JH. Thyroid metastasis from intraductal papillary-mucinous carcinoma of the pancreas. A case report. Acta Cytol 2000; 44:1066-72. [PMID: 11127736 DOI: 10.1159/000328599] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Intraductal papillary-mucinous carcinoma (IPMC) of the pancreas is a newly identified clinicopathologic entity of the exocrine pancreas. It has been considered a slowly growing and less-aggressive carcinoma with a favorable prognosis. There have been only a few documents reporting its distant metastasis and cytologic features, with no report of thyroid metastasis until the present. CASE A case of IPMC occurred in a 45-year-old male, who was admitted with rapid growth and tenderness of the thyroid. Abdominal computed tomography showed the typical cystic dilatation of IPMC with adjacent organ metastasis. Fine needle aspiration of the thyroid yielded papillary fronds of carcinoma cells with nuclear pleomorphism, abundant cytoplasm and prominent nucleoli in a mucinous background. Immunohistochemical findings from the skin and thyroid characterized the papillary-mucinous carcinoma as having originated in the pancreas. CONCLUSION This case suggests that papillary carcinoma fronds aspirated from the thyroid should be further differentiated from the primary site and that a pleomorphic nucleus in a mucinous background is a useful feature to exclude a thyroid origin. Before this, distant metastasis of IPMC to the skin and thyroid has not been reported. The prognosis of IPMC with wide, distant metastasis at an advanced stage is poor.
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Affiliation(s)
- P J Hsiao
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan, R.O.C
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54
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Yeh CC, Pei RJ, Liu YH, Su B, Lee KY, Yeh KT, Hsu YH, Ho CC, Ho HC, Lai YS. The expression of cytokeratin 18 in transitional cell carcinoma comparing with hepatoma. Res Commun Mol Pathol Pharmacol 2000; 105:3-10. [PMID: 10850364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
The epithelium in kidneys and urinary bladders contain CK18 as in liver cells. The modulation of cytokeratin 18 during tumor transformation in hepatoma had been previously recognized through a series of biochemical and immunological approaches. A 14 KD hepatoma related molecules was found in the previous studies. We would like to utilize the hepatoma transformation model to study the changes in CK18 in transitional cell carcinoma, using immunoblotting and western blotting techniques. The result is that transitional cell carcinoma retain their CK18 molecule. Furthermore, CK18 related molecules similar to those seen in hepatoma also present in transitional cell carcinoma. The conclusions are transitional cell carcinoma contains CK18 related proteins similar to those seen in hepatoma tissues. We suggest that this element would be responsible for the change during the malignant transformation processes.
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Affiliation(s)
- C C Yeh
- Department of Urology, School of Medicine The China Medical College and Hospital Taichung, Taichung City, Taiwan, ROC
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55
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Su B, Liu YH, Pei RJ, Yeh CC, Yeh KT, Lee KY, Hsu YH, Ho CC, Lai YS. Stabilizing of cytokeratin in PLC/PRF/5 cells. Res Commun Mol Pathol Pharmacol 2000; 105:11-22. [PMID: 10850365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
There are two sorted groups of cytokeratin 18 (CK18) in forms of assembly and disassembly in PLC/PRF/5 cells. A subcellular shifting is found in association with conditions of microtubule networks. The finding shows that CK18 mostly in forms of assembly, when microtubule networks are in status. The result also reveals that CK18 is relatively in forms of disassembly, while microtubule networks are disrupted in steps. It indicates that intact microtubule networks are probably a stabilizing factor of assembled CK18. It implies that CK18 is not a stable molecule when the cell is under environmental stress.
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Affiliation(s)
- B Su
- Department of Pathology, School of Medicine, China Medical College, Taichung, Taiwan
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56
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Yeh KT, Wang NM, Lee HH, Chang JG. Mutation analysis of the Bcl 10 gene in hepatocellular carcinoma. Kaohsiung J Med Sci 2000; 16:332-8. [PMID: 11079291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
The Bcl 10 gene was recently discovered to be involved in the pathogenesis of lymphoma of mucosa-associated lymphoid tissue and several types of tumorous cell lines. We examined the mutation of Bcl 10 gene in 31 hepatocellular carcinomas along with their corresponding non-tumorous tissues by single strand conformation polymorphism (SSCP) and direct sequencing. The results showed that 11.3% chromosomes had codon 5 GCA to TCA mutation, 4.8% chromosomes had codon 8 CTC to CTG mutation, and 12.9% chromosomes had codon 213 GGA to GAA mutation. These mutations were found not only in the hepatoma tissues but also in paired non-cancerous tissues and the normal population. We suggest that these three changes are polymorphisms, and there is no relationship with the development of hepatocellular carcinoma.
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Affiliation(s)
- K T Yeh
- Department of Pathology, Changhua Christian Hospital, Taichung, Taiwan
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57
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Abstract
The protein tyrosine kinase activity of c-src proto-oncogene product, pp60(c-src), is elevated in a number of human cancers, including colon cancer. Phosphorylation of human pp60(c-src) carboxy-terminal tyrosine 530 suppresses its kinase activity. A recent report suggested that the risk of colon cancer is higher for those who carry a C-->T transition mutation on codon 531 (Gln-531-->Amber-531) of src gene. This mutation caused a prematured translation termination and up-regulated the kinase activity. To examine whether this mutation could be a risk factor for colon carcinoma in the Chinese population, we used the same PCR-based assay to analyze src genotypes of 131 colon cancers and other various types of carcinoma. No mutation was detected in all specimens that were screened in this study. Thus, mutation at Gln-531 of src gene does not seem to be involved in the development of colon cancer in Chinese ethnicity.
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Affiliation(s)
- N M Wang
- Division of Molecular Medicine, Department of Medical Research, China Medical College Hospital, Taichung, Taiwan
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58
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Yeh KT, Chang JG, Chen YJ, Chen ST, Yu SY, Shih MC, Perng LI, Wang JC, Tsai M, Chang CP. Mutation analysis of the putative tumor suppressor gene PTEN/MMAC1 in hepatocellular carcinoma. Cancer Invest 2000; 18:123-9. [PMID: 10705874 DOI: 10.3109/07357900009038243] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Loss of heterozygosity of chromosome 10q has been reported in hepatoma. Areas with a high rate of loss of genetic material could harbor putative tumor suppressor genes. PTEN/MMAC1, a candidate tumor suppressor gene located at chromosome 10q23.3, has recently been identified and found to be homozygously deleted or mutated in several different types of human tumors. To determine whether the PTEN/MMAC1 gene is a target of 10q loss of heterozygosity in hepatoma, we examined 42 primary hepatomas for mutations in PTEN/MMAC1 by using nested reverse transcriptase polymerase chain reaction (RT-PCR) of the RNA and single-stranded conformation polymorphism (SSCP) analysis of all genomic exons. Although 2 of 42 hepatoma tissues had aberrant transcripts, 5 matched noncancerous liver tissues also had aberrant transcripts. Southern blot analysis of the entire genomic DNA revealed no genomic change. Therefore, like the TSG101 or FHIT gene, aberrant transcripts of PTEN/MMAC1 using the nested RT-PCR method were a common phenomenon for both cancerous and noncancerous liver tissues, which may not be related to oncogenesis. None of the 42 cases had small deletions, point mutations, or insertions. Our results suggest that the PTEN/MMAC1 gene may not play a role in the pathogenesis of hepatoma.
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Affiliation(s)
- K T Yeh
- Department of Medical Research, China Medical College Hospital, Taichung, Taiwan
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59
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Chang JH, Lin OS, Yeh KT. Subcutaneous sparganosis--a case report and a review of human sparganosis in Taiwan. Kaohsiung J Med Sci 1999; 15:567-71. [PMID: 10561983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023] Open
Abstract
Human sparganosis is a rare parasitic disease infected by plerocercoid larva (sparganum) of Spirometra species. It was usually diagnosed accidentally and has long been underestimated. In this report, we describe a 53-year-old woman presenting as an enlarging subcutaneous nodule in the right thigh for 3 months, which was excised in the belief that it was a lipoma. Characteristic sparganum accompanied by granulomatous inflammation, eosinophilic infiltrate and sinus tract in the subcutaneous tissue were discovered under microscopic examination of the excised tissue. Contaminated drinking water was presumed to be the infectious source. Complete excision is a curative treatment. We also review previously documented 19 human sparganosis in Taiwan to provide the clinical context for this report.
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Affiliation(s)
- J H Chang
- Department of Pathology, Chang-Hua Christian Hospital, Taiwan, Republic of China
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60
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Affiliation(s)
- H L Tai
- Department of Surgery, Changhua Christian Hospital, Taiwan
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61
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Wang NM, Tsai CH, Yeh KT, Chen SJ, Chang JG. P53 codon 72Arg polymorphism is not a risk factor for carcinogenesis in the chinese. Int J Mol Med 1999. [DOI: 10.3892/ijmm.4.3.249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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62
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Wang NM, Tsai CH, Yeh KT, Chen SJ, Chang JG. P53 codon 72Arg polymorphism is not a risk factor for carcinogenesis in the chinese. Int J Mol Med 1999; 4:249-52. [PMID: 10425273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023] Open
Abstract
The potential association of distinct polymorphism of the tumor suppressor gene p53, with an increased susceptibility to malignant transformation has been reported for various cancers. A polymorphism at codon 72 of p53 results in translation to either arginine (p53Arg) or proline (p53Pro), and recent study showed that Caucasian women with arginine form of p53 are more susceptible to HPV-associated carcinoma of the cervix. To examine whether arginine 72 could be a significant risk factor for tumor development, we used a PCR-based assay to analyze p53 genotypes of patients for several types of carcinoma. No significant difference in the frequency of p53Arg was found between normal and cancer patients, the results showed that the individuals homozygous for arginine variant were not at increased risk for cancer.
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Affiliation(s)
- N M Wang
- Division of Molecular Medicine, Department of Medical Research, China Medical College Hospital, Taichung, Taiwan, ROC
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63
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Chen ST, Yu SY, Tsai M, Yeh KT, Wang JC, Kao MC, Shih MC, Chang JG. Mutation analysis of the putative tumor suppression gene PTEN/MMAC1 in sporadic breast cancer. Breast Cancer Res Treat 1999; 55:85-9. [PMID: 10472782 DOI: 10.1023/a:1006142919428] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PTEN/MMAC1, a potential human tumor suppressor gene, has been found to have inactivating mutations in several types of cancer, including breast cancer. The incidence of breast cancer in Chinese is quite low in comparison with Caucasians, and genetic factors may play some roles. To further determine the role of PTEN/MMAC1 in breast cancer in Chinese, we used loss of heterozygosity (LOH), single strand conformation polymorphism (SSCP) with direct sequencing of variant bands, and Southern blot analysis methods to analyze mutations in PTEN/MMAC1 in 52 cases of breast cancer. None had LOH at chromosome 10q23.3. One mutation was identified, a somatic 3-base deletion, in one case. Our results suggest PTEN/MMAC1 does not play a major role in the development of sporadic breast cancer.
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Affiliation(s)
- S T Chen
- Department of Medical Research, China Medical College Hospital, Taichung, Taiwan
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Affiliation(s)
- M S Soon
- Division of Gastroenterology and the Department of Pathology, ChangHua Christian Medical Center, ChangHua, Taiwan
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65
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Abstract
BACKGROUND Isolated gastric tuberculosis is extremely rare, especially in the subcardiac region, where the low pH, high motility and absence of lymphoid tissue result in an unfavourable environment for the development of tuberculous lesions. METHODS AND RESULTS Here we present a case of isolated gastric tuberculosis in the gastric cardia with no evidence of pulmonary involvement. Our patient was a young man with vague gastrointestinal symptoms and no previous history of tuberculosis. His condition was first detected on upper endoscopy as a raised subcardiac ulcer similar in appearance to a submucosal tumour. An endoscopic forceps biopsy showed the presence of caseating granulomata and acid-fast bacilli. The lesion resolved completely with 12 months of oral anti-tuberculosis therapy. CONCLUSIONS This case illustrates the need for a high index of suspicion in order to diagnose this rare condition, as it can present in patients with no particular risk factors or symptoms. Once diagnosed, a complete cure can often be achieved with a course of oral anti-tuberculosis medication, with surgery being reserved for severely symptomatic or refractory lesions.
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Affiliation(s)
- O S Lin
- Division of Gastroenterology, ChangHua Christian Medical Center, Taiwan
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66
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Liu YH, Pei RJ, Yeh CC, Lee KY, Yeh KT, Hsu YH, Ho CC, Lai YS. The alteration of cytokeratin 18 molecule and its mRNA expression during tumor transformation in hepatoma. Res Commun Mol Pathol Pharmacol 1997; 96:243-53. [PMID: 9261884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The cytokeratin 18 related molecules of human hepatocellular carcinoma have been previously recognized through a series of biochemical and immunological approaches. It is suggested that these molecules undergo modulation from human hepatocyte cytokeratin 18. To prove whether these molecules are produced by modulation or protein degradation, we checked the cytokeratin profile of human hepatoma cell line PLC/PRF/5 with the methods used before. These results revealed that the PLC cells have the same cytokeratin 18 related molecules as human hepatocellular carcinoma tissue. The gene expression of the cytokeratin 18 in non-tumor liver tissues, hepatocellular carcinoma and PLC/PRF/5 cells were investigated. First, the mRNAs of non-tumor liver tissues, hepatocellular carcinoma tissues and PLC/PRF/5 cells were collected by the acid guanidinium thiocyanate phenol chloroform method. After transcription into cDNA by reverse transcriptase polymerase chain reaction, the cDNAs of each specimen were amplified by PCR and then digested by SmaI and BamHI restriction enzymes. The digested cDNA fragments were electrophoresed in agarose gel and the base pairs were found to be the same in length between neoplastic and non-neoplastic hepatocytes.
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Affiliation(s)
- Y H Liu
- Department of Pathology, School of Medicine, China Medical College, Taichung, Taiwan
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67
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Wu SS, Lin KC, Soon MS, Yeh KT. Ultrasound-guided percutaneous transhepatic fine needle aspiration cytology study of gallbladder polypoid lesions. Am J Gastroenterol 1996; 91:1591-4. [PMID: 8759667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To determine the accuracy and safety of ultrasound (US)-guided percutaneous transhepatic fine needle aspiration cytology (PT FNAC) in the diagnosis of large gallbladder (GB) polyps, especially cholesterol polyps. METHODS Between January 1993 and April 1995, 17 patients with GB polyps of a size over 1 cm were examined preoperatively with US-guided PT FNAC, with needle aspiration from the center of the polyps. A cytological-histopathological correlation study was performed postoperatively to assess the accuracy of the PT FNAC results. RESULTS 1) All eight cholesterol polyps were accurately diagnosed with the PT FNAC alone, showing foamy histiocytes. 2) In five patients, a diagnosis of epithelial tumor was made with PT FNAC study, showing the presence of columnar epithelium, but the PT FNAC failed to detect focal malignant change in adenomas of three of these patients. Only one case of adenocarcinoma was correctly diagnosed preoperatively by the PT FNAC. 3) The PT FNAC failed to detect an inflammatory polyp in one patient. 4) Failed cytology study was encountered in three patients-only bile was aspirated out. One patient had a GB stone, misdiagnosed as a GB polyp, another had an adenomyoma, and the last patient had chronic cholecystitis with Rokitansky-Aschoff sinuses. 5) One complication occurred-mild bile peritonitis. CONCLUSIONS US-guided PT FNAC directly targeting the GB lesions seems accurate in the diagnosis of cholesterol polyps, and is a safe procedure.
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Affiliation(s)
- S S Wu
- Department of Internal Medicine, Changhua Christian Hospital, Taiwan, Republic of China
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68
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Su B, Pei RJ, Yeh KT, Hsu YH, Lai YS. Could the cytokeratin molecule be modulated during tumor transformation in hepatocellular carcinoma? Pathobiology 1994; 62:155-9. [PMID: 7524530 DOI: 10.1159/000163897] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The stability of cytokeratin during tumor transformation in hepatocellular carcinoma was studied. We applied biochemical methodology to look into the switching of cytokeratin molecules in tumor transformation. First, by centrifugation the cytokeratin molecules were extracted from both liver and hepatoma tissues. The extracts were then soaked with cyanogen bromide-activated Sepharose 4B beads previously coated by monoclonal anti-cytokeratin antibody. The bound molecules were then released from the resin with salt. Second, the isolated molecules of both were treated with lysosomal enzyme and analyzed on two-dimensional gels. The results demonstrated that there was a modulation in cytokeratin molecules, and the hepatoma cytokeratin was generated from the hepatocyte cytokeratin.
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Affiliation(s)
- B Su
- Department of Pathology, School of Medicine, China Medical College, Taichung, Taiwan
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