Abstract:
OBJECTIVE:To study the expression of nuclear beta-catenin and Ki-67 in patients with normal gestation products (NGP), complete hydatidiform moles (CHM), and choriocarcinoma to elucidate their roles in carcinogenesis and their interrelations. METHODS:Expression of nuclear beta-catenin and Ki-67 was studied by immunohistochemistry using paraffin embedded blocks. Sixty NGP, 60 CHM, and 10 choriocarcinomas were analysed. In addition, approximately 400 trophoblasts each in 40 NGP, 40 CHM, and 10 choriocarcinomas from the same batch of samples were microdissected for quantitative reverse transcriptase polymerase chain reaction (Q-RT-PCR) to compare beta-catenin mRNA concentration among them. RESULTS:In the chorionic villi of NGP, beta-catenin was consistently expressed in the nuclei of cytotrophoblasts but not syncytiotrophoblasts. Nuclear beta-catenin expression was comparatively reduced in CHM trophoblasts and was absent in choriocarcinoma. By contrast, Ki-67 expression was increased from cytotrophoblasts but not in syncytiotrophoblasts in the chorionic villi of NGP to CHM trophoblasts and choriocarcinoma. Using Q-RT-PCR, beta-catenin mRNA was detected in 10 NGP, 13 CHM, and three choriocarcinoma specimens, with median copy numbers of 43,230, 18,229, and 17,334 per 400 trophoblasts, respectively. A housekeeping gene glyceraldehyde-3-phosphate dehydrogenase (GAPDH) mRNA was detected as a control in the NGP, CHM, and choriocarcinoma specimens, with median copy numbers of 51,300, 54,270, and 97,150 per 400 trophoblasts, respectively. Thus median beta-catenin mRNA values after normalisation were 0.85 in NGP (n = 10), 0.31 in CHM (n = 13), and 0.16 in choriocarcinoma (n = 3). CONCLUSIONS:Decreased nuclear beta-catenin expression and increased Ki-67 expression may be involved in choriocarcinoma carcinogenesis. The findings also suggest that nuclear beta-catenin may play a role in trophoblast differentiation during normal placental development.
journal_name
J Clin Patholjournal_title
Journal of clinical pathologyauthors
Wong SC,Chan AT,Chan JK,Lo YMdoi
10.1136/jcp.2005.026666keywords:
subject
Has Abstractpub_date
2006-04-01 00:00:00pages
387-92issue
4eissn
0021-9746issn
1472-4146pii
jcp.2005.026666journal_volume
59pub_type
杂志文章abstract::Gastrointestinal (GI) symptoms including abdominal pain, bloating and diarrhoea are a relatively common reason for consulting a physician. They may be due to inflammatory bowel disease (inflammatory bowel disease; Crohn's disease, ulcerative colitis and indeterminate colitis), malignancy (colorectal cancer), infectiou...
journal_title:Journal of clinical pathology
pub_type: 杂志文章,评审
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journal_title:Journal of clinical pathology
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journal_title:Journal of clinical pathology
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journal_title:Journal of clinical pathology
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journal_title:Journal of clinical pathology
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pub_type: 杂志文章
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journal_title:Journal of clinical pathology
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更新日期:1975-10-01 00:00:00
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journal_title:Journal of clinical pathology
pub_type: 杂志文章
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更新日期:1982-01-01 00:00:00
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更新日期:2002-06-01 00:00:00
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journal_title:Journal of clinical pathology
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更新日期:1983-07-01 00:00:00
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journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.50.5.436
更新日期:1997-05-01 00:00:00
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journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.2006.038752
更新日期:2007-02-01 00:00:00
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journal_title:Journal of clinical pathology
pub_type: 杂志文章
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journal_title:Journal of clinical pathology
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journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.47.4.367
更新日期:1994-04-01 00:00:00
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journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.28.5.388
更新日期:1975-05-01 00:00:00
abstract::Routine anaerobic culture of urine identified the urinary tract as the primary focus of sepsis in a postoperative patient with Bacteroides fragilis septicaemia. Specimens of urine from six other symptomatic patients grew > 10(8) cfu/litre of a Bacteroides species in pure growth. The significance of these isolates is d...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.51.9.709
更新日期:1998-09-01 00:00:00
abstract::In an attempt to confirm the presence or absence of central nervous tissue in commercially prepared beefburgers, four burgers were processed and stained using routine histological laboratory techniques. Constituent parts of the burgers could be identified readily. In this small sample no central nervous tissue was fou...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
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更新日期:1991-02-01 00:00:00
abstract::A system using totally disposable self-supporting bedpans requiring no carrier was examined in use in two hospitals. The bedpans and their contents were disposed of by destruction and flushing to waste carried out in a modified Haigh Sluicemaster disposal unit. This incorporates a positively closing and locking lid wi...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.26.12.925
更新日期:1973-12-01 00:00:00
abstract::A saccharogenic method is described for estimating amylase activity in human urine. Results accord with those reported elsewhere except that in this study the peak in the beta zone is a new finding. Comparison between normal and pathological urines suggests that the amylase activity of the beta peak is not of pancreat...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
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更新日期:1965-09-01 00:00:00
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journal_title:Journal of clinical pathology
pub_type: 杂志文章,多中心研究
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更新日期:2009-01-01 00:00:00
abstract:AIMS:To determine the sensitivity and specificity of a multiplex PCR assay for the contemporary identification of major species involved in oral candidiasis, without extraction and purification of DNA from the samples under investigation; and evaluation of this method in comparison with routine phenotypic culture ident...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.2006.040782
更新日期:2007-09-01 00:00:00