Abstract:
AIMS:The miR-9 family microRNAs (miRNAs) are tumour suppressor miRNAs implicated in carcinogenesis. We postulated that miR-9-1, miR-9-2 and miR-9-3 may be inactivated by aberrant promoter methylation in multiple myeloma (MM). METHODS:Methylation of miR-9-1, miR-9-2 and miR-9-3 was studied by methylation-specific PCR (MSP) in six normal controls, including three each of healthy peripheral blood (PB) or bone marrow buffy coat, 10 MM cell lines, 62 primary MM marrow samples at diagnosis and 22 at relapse/progression. RESULTS:MSP, verified by quantitative pyrosequencing, showed that the promoters of miR-9-3 and miR-9-1 were unmethylated in normal controls but methylated in 4 (40%) and 5 (50%) of 10 MM cell lines, respectively. However, the promoter of miR-9-2 was methylated in three normal PB buffy coat controls and in CD138-sorted healthy marrow plasma cells, indicating possibly tissue specific rather than tumour-specific methylation of miR-9-2, which was thus not studied further. In WL-2 cells, which were completely methylated for miR-9-3, 5-aza-2'-deoxycytidine treatment caused miR-9-3 promoter demethylation and pri-miR-9-3 re-expression. In primary samples, methylation of miR-9-3 was detected in 1 of 62 patients at diagnosis and 1 of 22 patients at relapse/progression. However, miR-9-1 methylation was absent in both primary samples at diagnosis and at relapse/progression. CONCLUSIONS:Hypermethylation of miR-9-3 and miR-9-1 is tumour-specific in MM, leading to reversible miRNA silencing. Frequent methylation of miR-9-3 and miR-9-1 in cell lines, but not in primary samples, may be acquired during in vitro culture, and indicates an unimportant role of miR-9 methylation in myelomagenesis.
journal_name
J Clin Patholjournal_title
Journal of clinical pathologyauthors
Zhang Q,Wang LQ,Wong KY,Li ZY,Chim CSdoi
10.1136/jclinpath-2014-202817subject
Has Abstractpub_date
2015-07-01 00:00:00pages
557-61issue
7eissn
0021-9746issn
1472-4146pii
jclinpath-2014-202817journal_volume
68pub_type
杂志文章abstract:AIMS:To evaluate the effect of microwave irradiation on the staining quality of a range of commonly used primary antibodies in archival, formalin fixed, paraffin wax embedded material, with emphasis on antibodies that have previously worked successfully only on frozen tissue. METHODS:Immunocytochemistry (streptavidin-...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.47.5.448
更新日期:1994-05-01 00:00:00
abstract::A patient with megaloblastic anaemia due to nutritional folate deficiency is described. Partial villous atrophy and malabsorption of xylose showed progressive improvement to normal with folic acid therapy. ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.24.2.131
更新日期:1971-03-01 00:00:00
abstract:AIMS:Myospherulosis is a rare condition characterised by sac-like structures containing spheroid bodies in cysts or cystic spaces in the tissue. This condition has not previously been reported in the liver. The association with previous portal vein embolisation using a mixture of butyl 2-cyanoacrylate and ethiodised oi...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.2003.11965
更新日期:2004-02-01 00:00:00
abstract::The coronavirus disease 2019 (COVID-19) is a zoonotic viral infection originating from Wuhan, China in December 2019. The World Health Organization has classified this pandemic as a global health emergency due to its virulent nature of transmission, which may lead to acute respiratory distress syndrome. Singapore's he...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jclinpath-2020-206563
更新日期:2020-03-20 00:00:00
abstract::Mast cells were identified by electronmicroscopy in the alveolar wall of the lung in 20 subjects (10 normal, 10 abnormal). A quantitative and qualitative study was made of the mast cells. In the normal lung there was an average concentration of 350 mast cells/mm2 of alveolar wall and in the abnormal 523/mm2. Mast cell...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.34.12.1333
更新日期:1981-12-01 00:00:00
abstract:UNLABELLED:Encapsulated papillary carcinoma (EPC) of the breast is a distinct histological subtype characterised by malignant epithelial proliferation supported by fibrovascular stalks. Although EPC typically lacks myoepithelial cells, it shows indolent clinical course. The classification of EPC as an in situ, or invas...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jclinpath-2012-200710
更新日期:2012-08-01 00:00:00
abstract::The Human Leukocyte Antigen (HLA) system plays a critical role in regulating the immune response. As a consequence of its role in immune regulation and exquisite polymorphism, the HLA system also constitutes an immunological barrier which must be avoided or otherwise overcome in clinical transplantation. This introduc...
journal_title:Journal of clinical pathology
pub_type: 杂志文章,评审
doi:10.1136/jcp.2009.072371
更新日期:2010-05-01 00:00:00
abstract::This 14th best practice review is the second of a pair that examines tumour marker requesting primary care situations. This review considers carbohydrate antigen 125, α-fetoprotein and human chorionic gonadotropin. It is presented in question-answer format, referenced for each question. The recommendations represent a...
journal_title:Journal of clinical pathology
pub_type: 杂志文章,评审
doi:10.1136/jclinpath-2011-200293
更新日期:2012-02-01 00:00:00
abstract::The fetal antigen i has been demonstrated by indirect immunofluorescence on cord erythrocytes and placental trophoblast. A patient with disseminated choriocarcinoma developed high-tire anti-i cold agglutinins, and minor elevation of anti-i titres was seen in four out of six further patients with treated choriocarcinom...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.32.6.523
更新日期:1979-06-01 00:00:00
abstract:AIMS:To develop a specific radioimmunoassay for the routine determination of serum vitamin B12. METHODS:Antisera were raised in rabbits by immunisation with the monocarboxylic acid derivative of cyanocobalamin coupled to human serum albumin. Antibody titres and affinities were determined and the antiserum giving the h...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.45.4.328
更新日期:1992-04-01 00:00:00
abstract:INTRODUCTION:Bone marrow aspiration and biopsy is an invasive procedure associated with morbidity and mortality risk. We compared a powered bone marrow aspiration and biopsy device to the traditional method by relatively assessing pain scores, procedure times, biopsy capture rates, quality of material retrieved, and sa...
journal_title:Journal of clinical pathology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1136/jclinpath-2011-200047
更新日期:2011-09-01 00:00:00
abstract:AIMS:The aim of this study was to develop a computer-aided diagnosis (CADx) system for identifying breast pathology. METHODS:Two sets of 100 consecutive core needle biopsy (CNB) specimens were collected for test and validation studies. All 200 CNB specimens were stained with antibodies targeting oestrogen receptor (ER...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jclinpath-2017-204478
更新日期:2017-12-01 00:00:00
abstract::Guinea-pigs, rats, dogs, rabbits, monkeys, sheep, and goats were screened for G-6PD activity in erythrocytes by the methaemoglobin reduction test, the brilliant cresyl blue decolorization test, and the spectrophotometric determination of the NADPH generation rate. Guinea-pigs, rats, dogs, rabbits, and monkeys were fou...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.19.6.614
更新日期:1966-11-01 00:00:00
abstract::Antral biopsy culture supernatants from 14 subjects with chronic gastritis, known to have IgA antibodies to the 120 kilodalton protein, showed positive recognition of this antigen in western blots against a cytotoxin positive strain of Helicobacter pylori but gave negative reactions with two cytotoxin negative strains...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.45.8.733
更新日期:1992-08-01 00:00:00
abstract::Clonality analysis of the immunoglobulin heavy chain (IgH) gene is helpful in identifying malignant B cell infiltrates in the bone marrow and is usually carried out on separate aspirates or on the same formalin-fixed decalcified bone marrow specimen. To determine whether the removal of the decalcification step would i...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.2005.030379
更新日期:2006-10-01 00:00:00
abstract::A case of cirrhosis of the liver, associated with false-positive serological tests for syphilis and an antibody active against stored red cells, is presented. Methods used in the identification of the ;stored red cell' antibody are described. ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.18.4.460
更新日期:1965-07-01 00:00:00
abstract::Inhibition of streptolysin O activity by cholesterol depends on the latter being in free form. The normal esterified and protein-bound cholesterol fractions in serum do not influence streptolysin O activity. However, high cholesterol levels in rabbits fed cholesterol with cholic acid were associated with an increased ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.25.10.885
更新日期:1972-10-01 00:00:00
abstract::The morphology of the labial salivary glands in subjects with and without cystic fibrosis has been studied by light and electron microscopy. The terms ;light' cell, ;dark' cell, ;clear' cell, and ;myoepithelial' cell are used to describe the four cell types distinguished at the level of the electron microscope. The da...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.24.3.270
更新日期:1971-04-01 00:00:00
abstract:AIMS:To investigate the relation between sarcoidosis and lymphoma. METHODS:The hospital notes of five patients with sarcoidosis and a lymphoproliferative disorder were reviewed. Histological material on which the diagnoses of sarcoidosis and lymphoma were made was re-analysed. RESULTS:Four of the five patients had we...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.49.3.208
更新日期:1996-03-01 00:00:00
abstract::An investigation into the noise levels in a clinical chemistry laboratory has been carried out. It was shown that although the levels were insufficient to cause damage to hearing, they exceeded the criteria of acceptability for offices and workshops. ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.23.5.445
更新日期:1970-07-01 00:00:00
abstract::An enzyme linked immunoadsorbent assay (ELISA) was used to detect IgG, IgM, and IgA antibody in urine to a crude antigenic mixture prepared from six arbitrarily chosen strains of common coliform urinary pathogens. In a group of patients with symptoms of urinary tract infection 24 of 80 (30%) urine samples were positiv...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.40.7.787
更新日期:1987-07-01 00:00:00
abstract::The plasma clearance of intravenously administered folic acid was abnormally rapid in all of five patients studied with untreated hyperthyroidism; in three, the basal serum L. casei folate level was subnormal. Four of these patients and another patient were studied at various intervals after partial or complete correc...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.17.6.666
更新日期:1964-11-01 00:00:00
abstract:AIMS:To study the oesophageal histological changes in long term users of non-steroidal anti-inflammatory drugs (NSAIDs) compared with patients not receiving these drugs. METHODS:Ninety eight patients were studied, 53 of whom had taken NSAIDs for three years; 45 had not. Oesophageal biopsy specimens were taken from hea...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.47.8.705
更新日期:1994-08-01 00:00:00
abstract::A case of IgD myeloma accompanied by diffuse osteosclerosis is reported. A trephine biopsy specimen showed only reticulin fibrosis, but histomorphometric analysis of a full thickness transiliac bone biopsy specimen showed increased trabecular bone mass, with no local deposit of tumour. An excess of bone surfaces were ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.41.5.486
更新日期:1988-05-01 00:00:00
abstract::An immunochemical procedure for routine laboratory diagnosis of pregnancy utilizing adsorption of human chorionic gonadotrophin onto kaolin and the Ortho pregnancy test reagents is described. The method is suitable for quantitative assay of urinary human chorionic gonadotrophin and can be adapted for use with serum. I...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.17.5.548
更新日期:1964-09-01 00:00:00
abstract::Components of the blood fibrinolytic system were measured in 43 patients with leukaemia. Increased fibrinolytic activity, indicated by a reduced plasma plasminogen level, was found in 14 patients. The combination of severe thrombocytopenia and increased fibrinolysis appeared to be a determinant in the production of a ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.21.2.136
更新日期:1968-03-01 00:00:00
abstract::Laribacter hongkongensis is a Gram-negative, facultative anaerobic, motile, S-shaped, urease-positive bacillus associated with invasive infections in liver cirrhosis patients and community-acquired gastroenteritis. Most cases of L hongkongensis infections occur in eastern countries. Information is lacking on the usefu...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jclinpath-2013-201651
更新日期:2013-12-01 00:00:00
abstract::Protein HC and protein HC-IgA complex were measured in 18 different types of fluid sample from healthy subjects and patients with different illnesses to determine if the concentrations of protein HC and protein HC-IgA complexes could be used to monitor certain diseases, when measured separately. The normal values for ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.41.11.1176
更新日期:1988-11-01 00:00:00
abstract::Platelet adhesiveness has been measured in citrated whole blood and in platelet-rich plasma obtained from normal subjects, splenectomized patients, and from patients in whom the diagnosis of recurrent venous thrombosis had been made. The duration of centrifugation used in the preparation of platelet-rich plasma was fo...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.21.3.397
更新日期:1968-05-01 00:00:00
abstract:BACKGROUND:Squamous differentiation/squamous metaplasia is often associated with endometrial adenocarcinoma and benign lesions, such as endometrial hyperplasia and chronic endometritis. Morules have distinct histological characteristics, and are referred to as squamous metaplasia or squamoid metaplasia. AIM:To focus o...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.2004.017996
更新日期:2004-09-01 00:00:00