Background: Several factors render chronic lymphocytic leukemia (CLL) an interesting subject for study by researchers. These include marked progress in understanding the molecular biology of normal and neoplastic lymphocytes and recent advances in molecular genetics techniques. Among molecular markers, matrix metalloproteinase-9 (MMP-9), have been widely studied.
Objectives: The aim of the study is to evaluate the role of MMP-9 in the pathogenesis of CLL and to assess its prognostic role.
Patients and methods: A retrospective cross-sectional study done on 60 patients with chronic lymphocytic leukemia compared with 20 controls (anemic patients), all recruited at the Medical City Teaching Hospital laboratories from January 2004 to December 2007. The bone marrow biopsy of each patient was re-examined histologically. MRNA-In situ hybridization was performed to detect MMP-9.
Results: The frequency of MMP-9 positivity was 78.3% (47 of 60 cases). A significant inverse correlation was found between increasing MMP-9 scores and lower PCV level. A significantly larger number of patients with high score were associated with advanced modified Rai stage than patients with low score. In addition, there was a significant positive correlation between increasing scores of MMP-9 and advancing clinical stage.
Conclusion: MMP-9 positivity was high and the score was significantly associated with advanced clinical stage of the disease
The study aimed to assess the expression of CD49d and CD26 in newly diagnosed CLL patients and find their correlation with clinical Binet stage, and other clinical parameters. This study was conducted on 51 newly diagnosed CLL patients based on lymphocyte count > 5×109/L and immunophenotyping. The expression of CD49d, and CD26 were investigated using eight-color flow cytometer. The expression of CD49d and CD26 were detected in 56.9 %, 68.8 % of CLL patients, respectively. The correlation between CD49d expression and CD26 expression was statistically significant (p < 0.001) with high concordance rate between them. The positive expression of both CD49d and CD26 had statistically significant association with clinical Binet staging (p < 0.001,
... Show MoreBackground: Renal disease results in significant disorder of hemostasis (bleeding diathesis or
hypercoagulable state).
Objectives: This study is to determine the changes in some hemostasis parameters in patients with
chronic renal failure and identify the effect of dialysis on these changes.
Patients and Methods: seventy five patients with end stage chronic renal failure were collected from
Baghdad hospital, a full detailed history and clinical examination were performed, 50 patients were on
maintenance weekly hemodialysis, and 25 patients were without dialysis.
Result: Bleeding time was significantly higher in patients with chronic renal failure who didn’t need
any type of dialysis, positive D-Dimer test. In so
Background: It is still difficult to give a final diagnosis in chronic myeloproliferative disorders (CMPDs) because of the overlap of the common pathological and clinical features of these disorders like bone marrow fibrosis which is considered important because it affects the normal function of the bone marrow. The collagen fibers are of different types, but in the bone marrow, the two main types are: collagen I, which is the most abundant type and collagen III (reticular) which is often associated with type I.
Objectives:To study bone marrow fibrosis (BMF) in samples of bone marrow biopsies (BMB) of chronic myeloid leukemia (CML) and other chronic myeloproliferative disorders using histochemical stains to establish the grade of fibr
Background: The role of Human papillomaviruses (HPV) in the etiology of ovarian cancer remains unclear and the results are controversial. Several studies have verified the presence of HPV DNA in both malignant and benign ovarian tumors.
Objectives: Determine the percentage of detection of HPV high (16&18) and low risk types (6&11) in surface epithelial ovarian carcinoma compared to benign and control groups.
Materials And Methods: Molecular detection and genotyping of HPV DNA were performed in 76 ovarian tissue blocks by using in situ hybridization (ISH) technique for detecting and localization of high risk HPV (16 and 18) and low risk HPV (6&11) types.
Results: The presence of ISH signals fo
Background: Human Cytomegalovirus (HCMV) infects a wide range of human cells, including colonic epithelial cells that give rise to adenomas and adenocarcinomas. Persistent productive infection of tumor cells is essential for oncomodulation by HCMV.This study aimed to detect HCMV matrix protein using in situ hybridization technique (ISH) in colorectal adenocarcinoma compared to normal colon tissues, and to the presence of cytomegalovirus inclusion bodies in infected colorectal carcinomas.
Patients and methods: Twenty six of colorectal adenocarcinomas were obtained in paraffin-blocks compared to 10 normal colon specimens which were age and sex matched as control group. Detection of HCMV was obtained by in s
Chronic lymphocytic leukaemia (CLL) patients display a highly variable clinical course, with progressive acquisition of drug resistance. We sought to identify aberrant epigenetic traits that are enriched following exposure to treatment that could impact patient response to therapy.
Epigenome-wide analysis of DNA methylation was performed for 20 patients at two timepoints during treatment. The prognostic significance of differentially methylated regions (DMRs) was assessed in independent cohorts of 139 and 1
Background: Human Cytomegalovirus ( HCMV ), lies dormant in the glial cells , and can be reactivated under conditions of inflammation and immunosuppression. In vitro, the virus can
transform cells and dysregulate many cellular pathways involved in oncogenesis. This study was conducted to detect HCMV matrix-protein mRNA using In Situ Hybridization technique in glial brain tumor tissues compared to normal brain tissues and the presence of cytomegalic inclusion bodies in brain tumor tissues.
Patients and Method: Thirty eight of glial tumor specimens were obtained in paraffin blocks compared to eight normal brain autopsy specimens which were age and sex matched with the
study group as a control group. ISH wa
Background: Molecular DNA hybridization has confirmed more than 120 different human papilloma virus (HPV) genotypes. A small group of them have high- risk oncogenic potential. Many studies have described an association of such high risk-HPV genotypes with a variety of oral lesions including squamous cell carcinoma, leukoplakia, and lichen planus.
Materials and Methods: A total number of 42 tissue specimens, representing 27 patients with oral lichen planus and 15 apparently-healthy oral tissues, were included in this study. The molecular methods for HPV detection and genotyping were performed by in situ hybridization(ISH) using cocktailed- and specific high- risk HPV DNA probes, respectively.
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