Related Experiment Video
Updated: Jul 16, 2026

11:29
HPLC-based Assay to Monitor Extracellular Nucleotide/Nucleoside Metabolism in Human Chronic Lymphocytic Leukemia Cells
Published on: July 20, 2016
Cyclooxygenase-2 expression in non-Hodgkin's lymphomas
Semra Paydas1, Melek Ergin, Seyda Erdogan
1Department of Oncology, Faculty of Medicine, Cukurova University, Adana, Turkey. sepay@cu.edu.tr
Leukemia & Lymphoma
|February 28, 2007
Summary
Cyclooxygenase 2 (Cox-2) is frequently expressed in non-Hodgkin's lymphomas (NHL) and is linked to aggressive disease. Understanding Cox-2's role may improve NHL diagnosis and treatment strategies.
Area of Science:
- Oncology
- Molecular Biology
- Pathology
Background:
- Cyclooxygenase 2 (Cox-2) is crucial in prostaglandin synthesis and implicated in various cancers.
- Research on Cox-2 in non-Hodgkin's lymphomas (NHL) is limited, necessitating further investigation.
- Cox-2's role in tumorigenesis highlights its potential as a therapeutic target.
Purpose of the Study:
- To investigate the significance of Cox-2 expression in NHL pathogenesis.
- To correlate Cox-2 expression levels with histological subtypes and clinical parameters in NHL.
- To evaluate the prognostic value of Cox-2 expression in NHL patients.
Main Methods:
- Cox-2 expression was assessed in 177 NHL cases using immunohistochemistry.
- Cases were categorized into low-grade (60) and aggressive (117) histological subtypes.
- Statistical analysis was performed to correlate Cox-2 expression with morphology and clinical data.
Main Results:
- Cox-2 expression was detected in 56% (99/177) of NHL cases.
- A significant association was found between aggressive histology and positive Cox-2 expression (p = 0.036).
- No significant correlation was observed between Cox-2 expression and clinical-laboratory parameters or overall survival.
Conclusions:
- Cox-2 is expressed in a majority of NHL cases and is associated with aggressive histological subtypes.
- Further research is warranted to explore the therapeutic potential of targeting Cox-2 in aggressive NHL.
- Cox-2 expression may serve as a potential biomarker for disease aggressiveness in NHL.
Related Concept Videos
Positive Regulator Molecules
Mitotic cell division results in daughter cells that exactly resemble the parent cell. However, errors in the DNA replication or distribution of genetic material may lead to genetic mutations that may be passed down to every new cell formed from the resulting abnormal cell. Propagation of such mutant cells is restricted through checkpoint mechanisms present at different stages of the cell cycle. These checkpoints involve regulator molecules that either promote or demote cell cycle events.
Secondary Lymphoid Organs
Secondary organs, including lymph nodes, the spleen, and mucosa-associated lymphoid tissue (MALT), work harmoniously to protect us from disease and infection.
The spleen is a vital organ in the lymphatic system, nestled in the upper left side of the abdomen. It is composed of two primary regions: the red pulp and the white pulp, each having distinct functions. The red pulp performs a significant role in blood filtration. It efficiently purges the blood of old or damaged red blood cells and...
The spleen is a vital organ in the lymphatic system, nestled in the upper left side of the abdomen. It is composed of two primary regions: the red pulp and the white pulp, each having distinct functions. The red pulp performs a significant role in blood filtration. It efficiently purges the blood of old or damaged red blood cells and...
Lymphoid Cells and Tissues
Lymphoid cells and tissues are integral to the immune system, which is crucial in maintaining our body's defense against harmful pathogens. They form the building blocks of lymphoid organs, which include the spleen, thymus, and lymph nodes.
Lymphoid cells consist of various types of immune system cells. These include B and T lymphocytes, which are responsible for producing antibodies and killing infected cells, respectively. Dendritic cells act as messengers between the innate and adaptive...
Lymphoid cells consist of various types of immune system cells. These include B and T lymphocytes, which are responsible for producing antibodies and killing infected cells, respectively. Dendritic cells act as messengers between the innate and adaptive...
Inhibition of Cdk Activity
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
Cushing Syndrome II: Pathophysiology
Cortisol production is normally governed by the hypothalamic–pituitary–adrenal (HPA) axis, which maintains hormonal balance through tightly regulated feedback mechanisms. Disruption of this regulatory system is central to the development of Cushing syndrome, whether the excess cortisol originates from external medications or internal pathology. Persistent cortisol elevation alters metabolism, immune function, and endocrine signaling, producing the characteristic clinical features of the...