Stimulation of intercellular adhesion molecule-1 (ICAM-1) antigen expression and shedding by interferon-? and phorbol ester in human renal carcinoma cell cultures: relation to peripheral blood mononuclear cell adhesion

1994 ◽  
Vol 22 (2) ◽  
pp. 85-91 ◽  
Author(s):  
A. B. Hansen ◽  
C. B. Andersen ◽  
S. T. Lillevang
Keyword(s):  
Cell Adhesion ◽  
Peripheral Blood Mononuclear Cell ◽  
Renal Carcinoma ◽  
Carcinoma Cell ◽  
Antigen Expression ◽  
Intercellular Adhesion Molecule ◽  
Intercellular Adhesion Molecule 1 ◽  
Peripheral Blood Mononuclear ◽  
Human Renal Carcinoma ◽  
Stimulation Of

Local Delivery of Ibuprofen via Controlled-release Polymers Prevents Angiographic Vasospasm in a Monkey Model of Subarachnoid Hemorrhage

2005 ◽  
Vol 57 (suppl_1) ◽  
pp. 184-190 ◽  
Author(s):  
Gustavo Pradilla ◽  
Quoc-Anh Thai ◽  
Federico G. Legnani ◽  
Richard E. Clatterbuck ◽  
Philippe Gailloud ◽  
...  
Keyword(s):  
Cell Adhesion ◽  
Subarachnoid Hemorrhage ◽  
Controlled Release ◽  
Adhesion Molecule ◽  
Subarachnoid Space ◽  
Intercellular Adhesion Molecule ◽  
Intercellular Adhesion Molecule 1 ◽  
Cynomolgus Monkeys ◽  
Monkey Model ◽  
Angiographic Vasospasm

Abstract OBJECTIVE: Adhesion and migration of leukocytes into the periadventitial space play a role in the pathophysiology of vasospasm after subarachnoid hemorrhage (SAH). Intercellular adhesion molecule-1 is a determinant cell adhesion molecule involved in this process. Ibuprofen has been shown to inhibit intercellular adhesion molecule-1 upregulation and prevent vasospasm in animal models of SAH. In this study, we report the toxicity and efficacy of locally delivered ibuprofen incorporated into controlled-release polymers to prevent vasospasm in a monkey model of SAH. METHODS: Ibuprofen was incorporated into ethylene-vinyl acetate (EVAc) polymers at 45% loading (wt:wt). For the toxicity study, cynomolgus monkeys (n = 5) underwent surgical implantation of either blank/EVAc polymers (n = 3) or 45% ibuprofen/EVAc polymers (n = 2) in the subarachnoid space, were followed up for 13 weeks, and were killed for histopathological analysis. For the efficacy study, cynomolgus monkeys (n = 14) underwent cerebral angiography 7 days before and 7 days after surgery and SAH and were randomized to receive either a 45% ibuprofen/EVAc polymer (n = 7; mean dose of ibuprofen, 6 mg/kg) or blank EVAc polymers (n = 7) in the subarachnoid space. Angiographic vasospasm was determined by digital image analysis. Student's t test was used for analysis. RESULTS: Animals implanted with ibuprofen polymers showed no signs of local or systemic toxicity. Animals treated with ibuprofen polymers had 91 ± 9% lumen patency of the middle cerebral artery, compared with 53 ± 11% of animals treated with blank/EVAc polymers (P < 0.001). CONCLUSION: Ibuprofen polymers are safe and prevent angiographic vasospasm after SAH in the monkey model. These findings support the role of cell adhesion molecules and inflammation in the pathophysiology of vasospasm.

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