AIM: To determine the expressions of inducible nitric oxide synthase (iNOS) and matrix metalloproteinase-9 (MMP-9) in hepatocellular carcinoma (HCC) and to investigate the relationship between iNOS and MMP-9 expression and their effects on angiogenesis and progression of HCC. METHODS: In this study, we examined iNOS, MMP-9, and CD34 expression in specimens surgically removed from 32 HCC patients and 7 normal liver tissues by immunohistochemical staining. Meanwhile, microvessel density (MVD) was determined as a marker of angiogenesis by counting CD34-positive cells. RESULTS: The positive rates of iNOS and MMP-9 expression were 71.88% (23/32) and 78.13% (25/32) in HCC. MMP-9 expression was significantly correlated with tumor size, capsule status, TNM stage, and risk of HCC recurrence (P = 0.032, P = 0.033, P = 0.007, and P = 0.001, respectively). There was also a significant relationship between iNOS expression and capsule status and risk of HCC recurrence (P = 0.049 and P = 0.004, respectively), but no correlation between iNOS expression and tumor size and TNM stage. There was a positive association between MVD and TNM stage and risk of HCC recurrence (P = 0.037 and P = 0.000, respectively). The count of MVD was significantly different in different iNOS and MMP-9 immunoreactivity groups (F = 17.713 and 17.097, P = 0.000 and P = 0.000, respectively). The examination of Spearman's rank correlation coefficient showed that there was a significant positive correlation between MVD and iNOS, MMP-9 immunoreactivity (r = 0.754 and 0.751, P = 0.000 and P=0.000, respectively). There was also a significant association between MMP-9 and iNOS expression in HCC (P = 0.010). CONCLUSION: Nitric oxide (NO) produced by iNOS could modulate MMP-9 production and therefore contribute to tumor cell angiogenesis and invasion and metastasis in HCC. The strong expression of iNOS and MMP-9 in HCC may be helpful in evaluating the recurrence of HCC, predicting poor prognosis. For patients with strong expression of MMP-9 and iNOS, the optimal treatment scheme needs to be selected.
AIM: To determine the expressions of inducible nitric oxide synthase (iNOS) and matrix metalloproteinase-9 (MMP-9) in hepatocellular carcinoma (HCC) and to investigate the relationship between iNOS and MMP-9 expression and their effects on angiogenesis and progression of HCC. METHODS: In this study, we examined iNOS, MMP-9, and CD34 expression in specimens surgically removed from 32 HCC patients and 7 normal liver tissues by immunohistochemical staining. Meanwhile, microvessel density (MVD) was determined as a marker of angiogenesis by counting CD34-positive cells. RESULTS: The positive rates of iNOS and MMP-9 expression were 71.88% (23/32) and 78.13% (25/32) in HCC. MMP-9 expression was significantly correlated with tumor size, capsule status, TNM stage, and risk of HCC recurrence (P = 0.032, P = 0.033, P = 0.007, and P = 0.001, respectively). There was also a significant relationship between iNOS expression and capsule status and risk of HCC recurrence (P = 0.049 and P = 0.004, respectively), but no correlation between iNOS expression and tumor size and TNM stage. There was a positive association between MVD and TNM stage and risk of HCC recurrence (P = 0.037 and P = 0.000, respectively). The count of MVD was significantly different in different iNOS and MMP-9 immunoreactivity groups (F = 17.713 and 17.097, P = 0.000 and P = 0.000, respectively). The examination of Spearman's rank correlation coefficient showed that there was a significant positive correlation between MVD and iNOS, MMP-9 immunoreactivity (r = 0.754 and 0.751, P = 0.000 and P=0.000, respectively). There was also a significant association between MMP-9 and iNOS expression in HCC (P = 0.010). CONCLUSION:Nitric oxide (NO) produced by iNOS could modulate MMP-9 production and therefore contribute to tumor cell angiogenesis and invasion and metastasis in HCC. The strong expression of iNOS and MMP-9 in HCC may be helpful in evaluating the recurrence of HCC, predicting poor prognosis. For patients with strong expression of MMP-9 and iNOS, the optimal treatment scheme needs to be selected.
Authors: S Arii; M Mise; T Harada; M Furutani; S Ishigami; M Niwano; M Mizumoto; M Fukumoto; M Imamura Journal: Hepatology Date: 1996-08 Impact factor: 17.425
Authors: Marcelo Marcet-Palacios; Kathryn Graham; Carol Cass; A Dean Befus; Irvin Mayers; Marek W Radomski Journal: J Pharmacol Exp Ther Date: 2003-09-03 Impact factor: 4.030
Authors: Koso Egi; Nicole E Conrad; Jennifer Kwan; Costas Schulze; Richard Schulz; Stephen M Wildhirt Journal: Eur J Cardiothorac Surg Date: 2004-08 Impact factor: 4.191
Authors: Patricia A Thompson; Mahin Khatami; Carolyn J Baglole; Jun Sun; Shelley A Harris; Eun-Yi Moon; Fahd Al-Mulla; Rabeah Al-Temaimi; Dustin G Brown; Annamaria Colacci; Chiara Mondello; Jayadev Raju; Elizabeth P Ryan; Jordan Woodrick; A Ivana Scovassi; Neetu Singh; Monica Vaccari; Rabindra Roy; Stefano Forte; Lorenzo Memeo; Hosni K Salem; Amedeo Amedei; Roslida A Hamid; Leroy Lowe; Tiziana Guarnieri; William H Bisson Journal: Carcinogenesis Date: 2015-06 Impact factor: 4.944
Authors: Graciele Almeida de Oliveira; Robert Y S Cheng; Lisa A Ridnour; Debashree Basudhar; Veena Somasundaram; Daniel W McVicar; Hugo Pequeno Monteiro; David A Wink Journal: Antioxid Redox Signal Date: 2016-10-31 Impact factor: 8.401
Authors: John M J Herbert; Francesca M Buffa; Henrik Vorschmitt; Stuart Egginton; Roy Bicknell Journal: BMC Genomics Date: 2009-10-23 Impact factor: 3.969
Authors: Rafeeq P H Ahmed; Khawaja Husnain Haider; Jiang Shujia; Muhammad Rizwan Afzal; Muhammad Ashraf Journal: PLoS One Date: 2010-01-05 Impact factor: 3.240