Ignite Creation Date:
2024-05-05 @ 4:48 PM
Last Modification Date:
2024-10-26 @ 9:24 AM
Study NCT ID:
NCT00313066
Status:
UNKNOWN
Last Update Posted:
2006-04-11
First Post:
2006-04-09
Brief Title:
Comparison the Level of CTGF Protein and Related Cytokine in Pleural Effusion
Sponsor:
Taichung Veterans General Hospital
Organization:
Taichung Veterans General Hospital
Study Overview
Official Title:
Comparison the Level of CTGF Protein and Related Cytokine in Pleural Effusion Among Tuberculous Pleurisy and Malignant Pleural Effusion Patients
Status:
UNKNOWN
Status Verified Date:
2006-04
Last Known Status:
RECRUITING
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
Connective tissue growth factor CTGF is known to be a fibrogenic cytokine it could be expressed in various fibrosis diseases But recent research showed that CTGF also be considered to be a tumor suppressive gene The expression of CTGF protein is higher in normal Type I and II alveolar epithelial cells than metastatic tumor cells CTGF appears to be a suppressor of lung tumor invasion and in metastasis and the decreased CTGF expression in tumor tissues was associated with advanced tumor stage lymph node metastasis early postoperative relapse and shorter patient survival
CTGF can be expressed in many human organs such as heart brain placenta liver muscle kidney peritoneal mesothelial cells and lung but did not known in the pleura The CTGF protein is present in the peritoneal cavity and is increased during peritonitis Considering pleural cavity comes from the same origin of mesenchyma with peritoneum pericardium and fallopian tube we aim to evaluate whether the CTGF expression increase in the pleurisy patients including the parapneumonic effusion and the TB pleurisy
The diagnosis of TB pleurisy depends on the effusion TB culture and pleural biopsy Unfortunately the sensitivity of TB culture was only 20-30 So most patients must receive invasive pleural biopsy Adenosine deaminaseADA was developed as a screening test but should not be considered an alternative test to culture and biopsy The sensitivity of ADA might vary from 32-100 and the cutoff value also vary from 26 to 70 IUL We should develop a method to alternate the culture and biopsy Therefore our technologist Jao-Jia chu will develop the CTGF ELISA kit for this specific aim If CGTF might increase expression in pleuritis but decrease in pleural metastasis it might be a potential method help to differentiate lymphocytic pleural effusion between TB pleurisy and malignancy
CTGF can be expressed in many human organs such as heart brain placenta liver muscle kidney peritoneal mesothelial cells and lung but did not known in the pleura The CTGF protein is present in the peritoneal cavity and is increased during peritonitis Considering pleural cavity comes from the same origin of mesenchyma with peritoneum pericardium and fallopian tube we aim to evaluate whether the CTGF expression increase in the pleurisy patients including the parapneumonic effusion and the TB pleurisy
The diagnosis of TB pleurisy depends on the effusion TB culture and pleural biopsy Unfortunately the sensitivity of TB culture was only 20-30 So most patients must receive invasive pleural biopsy Adenosine deaminaseADA was developed as a screening test but should not be considered an alternative test to culture and biopsy The sensitivity of ADA might vary from 32-100 and the cutoff value also vary from 26 to 70 IUL We should develop a method to alternate the culture and biopsy Therefore our technologist Jao-Jia chu will develop the CTGF ELISA kit for this specific aim If CGTF might increase expression in pleuritis but decrease in pleural metastasis it might be a potential method help to differentiate lymphocytic pleural effusion between TB pleurisy and malignancy
Detailed Description:
Connective tissue growth factor CTGF also known as CCN2 is a member of the CCN family Cysteine-rich 61Cyr61 is known as CCN1 and nephroblastoma over-expressed Nov known as CCN3 as well as Wisp-1elm1 CCN4Wisp-2rCop1CCN5 and Wisp-3 CCN61 The CTGF is a secretory growth factor that bind with integrins on the cell surface and was first identified as a mitogen isolated from the medium of human umbilical vein endothelial cells2 CTGF can be expressed in many human organs such as heart brain placenta liver muscle kidney and lung and may have many biologic functions3 CTGF stimulate the proliferation of fibroblast and vascular endothelial cells The level of CTGF protein is increased in patients with various fibrotic human disease including renal failure hepatic fibrosis in biliary atresia systemic scleroderma and vascular atherosclerosis4
Recent research revealed the expression of CTGF protein was high in the normal lung epithelium and moderate to high in stage I lung adenocarcinoma cells5 But the expression of CTGF was reduced in low grade metastatic respiratory epithelial tumor cells The CTGF expression was associated with the suppression of human lung cancer cell metastasis in a mouse model and the reduced CTGF expression was also associated with clinical metastasis and patient survival5 The expression of CTGF protein was statistically significantly higher in normal lung type I and II epithelial cells than in the majority of metastatic adenocarcinoma specimens revealed that the level of CTGF protein decreases during clinical disease when cells acquire the ability to grow at metastatic site6 CTGF appears to be a suppressor of lung tumor invasion and metastasis and the decreased CTGF expression in tumor tissues was associated with advanced tumor stage lymph node metastasis early postoperative relapse and shorter patient survival Connective tissue growth factor acts as an independent prognostic marker in colorectal cancer and giomas and inhibits metastasis78
Recent research revealed the expression of CTGF protein was high in the normal lung epithelium and moderate to high in stage I lung adenocarcinoma cells5 But the expression of CTGF was reduced in low grade metastatic respiratory epithelial tumor cells The CTGF expression was associated with the suppression of human lung cancer cell metastasis in a mouse model and the reduced CTGF expression was also associated with clinical metastasis and patient survival5 The expression of CTGF protein was statistically significantly higher in normal lung type I and II epithelial cells than in the majority of metastatic adenocarcinoma specimens revealed that the level of CTGF protein decreases during clinical disease when cells acquire the ability to grow at metastatic site6 CTGF appears to be a suppressor of lung tumor invasion and metastasis and the decreased CTGF expression in tumor tissues was associated with advanced tumor stage lymph node metastasis early postoperative relapse and shorter patient survival Connective tissue growth factor acts as an independent prognostic marker in colorectal cancer and giomas and inhibits metastasis78
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None