OBJECTIVE: To evaluate variations in the plasma tissue factor (TF) and urokinase type plasminogen activator (u-PA) system and their relationship with clinical cancer type, pathological classification and metastatic st...OBJECTIVE: To evaluate variations in the plasma tissue factor (TF) and urokinase type plasminogen activator (u-PA) system and their relationship with clinical cancer type, pathological classification and metastatic status in cancer patients. METHODS: Plasma levels of TF and its inhibitor (TFPI), as well as u-PA and its receptor (u-PAR) were measured using ELISA in 76 patients with malignant tumors and 24 patients with benign tumors. RESULTS: Plasma levels of TF and u-PAR in the malignant tumor group were significantly higher than those of the benign tumor group and the normal control. U-PA and u-PAR increased significantly in patients with esophageal and gastric cancer. However, most of these parameters except TFPI did not vary according to pathological classification. A significant elevation was evident in patients with local infiltration, lymph node involvement and distal metastasis, while u-PAR only increased in the latter two categories. CONCLUSIONS: Both the TF and u-PA systems are activated in cancer patients. U-PA and its receptor might prove to be a clinically useful marker for disease progression.展开更多
OBJECTIVE To investigate the expression of urokinase-type plasminogen （uPA）, its inhibitor-1 （PAI-1） mRNA and its protein in human gastric cancer and to find out the relationship among the tumor differentiation, a...OBJECTIVE To investigate the expression of urokinase-type plasminogen （uPA）, its inhibitor-1 （PAI-1） mRNA and its protein in human gastric cancer and to find out the relationship among the tumor differentiation, angiogenesis, and other clinical pathologic factors. METHODS In situ hybridization （ISH） was used to get the uPA, PAI-lmRNA in 110 cases with human gastric cancer in 2-tissue microarray （TMA）. Immunohistochemical staining （S-P method） for uPA, PAI-1 protein and CD34 were performed in the 110 cases in 2 TMA. RESULTS The expression of the uPA, PAI-lmRNA and their protein happened in the cytoplasm of gastric cancer cells were induced by the poor differentiation of the GC, and the expression of uPA had an increasing trend while the expression of the PAI-1 had a decreasing trend. The microvessel density （MVD） had a positive correlation with the clinical stages and the significant relationship with the lymph node metastasis （P 〈 0.05）. The MVD in uPA positive group was significantly higher than those in uPA negative group （P 〈 0.05）. The expression of PAI-1 has no correlation neither with the clinical stages nor the lymph node metastasis. CONCLUSION The uPA play an important role in invasion and metastasis of GC through promoting angiogenesis. Interdicting the secretion and function of the uPA may allow the target therapy against the tumor invasion. As a new high-throughput technology, the tissue microarray is a valuable way to be used in clinical treatment.展开更多
OBJECTIVE: To investigate the pathogenesis, clinical features, radiographic findings and therapeutic outcomes of non-acute intracranial deep venous thrombosis in adults. METHODS: Five patients who presented with incre...OBJECTIVE: To investigate the pathogenesis, clinical features, radiographic findings and therapeutic outcomes of non-acute intracranial deep venous thrombosis in adults. METHODS: Five patients who presented with increased intracranial pressure were examined with computed tomography, magnetic resonance and angiography, diagnosed as having non-acute intracranial deep venous thrombosis, and treated with thrombolytic therapy. They were reviewed retrospectively. RESULTS: There were 3 men and 2 women, aged from 22 to 49 years. Symptom duration ranged from 1 month to 7 months, and 4 of the 5 patients were associated with venous sinus thrombosis. Two patients developed cold and fever before the onset of disease, and 3 patients had no evident predisposing factors. After the infusion of thrombolytic and systemic anti-coagulant therapy, the neurological symptoms and signs of the patients were alleviated. CONCLUSIONS: Digital subtraction angiography (DSA) is more sensitive and accurate than MRI on diagnosing intracranial deep venous thrombosis. It may play an important role in the assessment of the treatment of intracranial deep venous thrombosis. Thrombolysis and anticoagulation of intracranial deep venous thrombosis appears to be a safe and efficacious treatment not only in the acute stage but also in the non-acute stage.展开更多
文摘OBJECTIVE: To evaluate variations in the plasma tissue factor (TF) and urokinase type plasminogen activator (u-PA) system and their relationship with clinical cancer type, pathological classification and metastatic status in cancer patients. METHODS: Plasma levels of TF and its inhibitor (TFPI), as well as u-PA and its receptor (u-PAR) were measured using ELISA in 76 patients with malignant tumors and 24 patients with benign tumors. RESULTS: Plasma levels of TF and u-PAR in the malignant tumor group were significantly higher than those of the benign tumor group and the normal control. U-PA and u-PAR increased significantly in patients with esophageal and gastric cancer. However, most of these parameters except TFPI did not vary according to pathological classification. A significant elevation was evident in patients with local infiltration, lymph node involvement and distal metastasis, while u-PAR only increased in the latter two categories. CONCLUSIONS: Both the TF and u-PA systems are activated in cancer patients. U-PA and its receptor might prove to be a clinically useful marker for disease progression.
基金supported by a grant from Educational Commission of Anhui Province,China(No.kj2007A029).
文摘OBJECTIVE To investigate the expression of urokinase-type plasminogen （uPA）, its inhibitor-1 （PAI-1） mRNA and its protein in human gastric cancer and to find out the relationship among the tumor differentiation, angiogenesis, and other clinical pathologic factors. METHODS In situ hybridization （ISH） was used to get the uPA, PAI-lmRNA in 110 cases with human gastric cancer in 2-tissue microarray （TMA）. Immunohistochemical staining （S-P method） for uPA, PAI-1 protein and CD34 were performed in the 110 cases in 2 TMA. RESULTS The expression of the uPA, PAI-lmRNA and their protein happened in the cytoplasm of gastric cancer cells were induced by the poor differentiation of the GC, and the expression of uPA had an increasing trend while the expression of the PAI-1 had a decreasing trend. The microvessel density （MVD） had a positive correlation with the clinical stages and the significant relationship with the lymph node metastasis （P 〈 0.05）. The MVD in uPA positive group was significantly higher than those in uPA negative group （P 〈 0.05）. The expression of PAI-1 has no correlation neither with the clinical stages nor the lymph node metastasis. CONCLUSION The uPA play an important role in invasion and metastasis of GC through promoting angiogenesis. Interdicting the secretion and function of the uPA may allow the target therapy against the tumor invasion. As a new high-throughput technology, the tissue microarray is a valuable way to be used in clinical treatment.
文摘OBJECTIVE: To investigate the pathogenesis, clinical features, radiographic findings and therapeutic outcomes of non-acute intracranial deep venous thrombosis in adults. METHODS: Five patients who presented with increased intracranial pressure were examined with computed tomography, magnetic resonance and angiography, diagnosed as having non-acute intracranial deep venous thrombosis, and treated with thrombolytic therapy. They were reviewed retrospectively. RESULTS: There were 3 men and 2 women, aged from 22 to 49 years. Symptom duration ranged from 1 month to 7 months, and 4 of the 5 patients were associated with venous sinus thrombosis. Two patients developed cold and fever before the onset of disease, and 3 patients had no evident predisposing factors. After the infusion of thrombolytic and systemic anti-coagulant therapy, the neurological symptoms and signs of the patients were alleviated. CONCLUSIONS: Digital subtraction angiography (DSA) is more sensitive and accurate than MRI on diagnosing intracranial deep venous thrombosis. It may play an important role in the assessment of the treatment of intracranial deep venous thrombosis. Thrombolysis and anticoagulation of intracranial deep venous thrombosis appears to be a safe and efficacious treatment not only in the acute stage but also in the non-acute stage.
