Abstract
Background: Histamine is an imidazolic compound performing a crucial function in the pathogenesis of inflammation. Several studies have also emphasized its pro-carcinogenic effect in colorectal cancer (CRC).
Object: In fact, increased histamine levels have been observed in CRC and a decreased catabolism of this molecule is typical of colorectal adenomas. Additional data have demonstrated that CRC is characterized by an altered balance of histamine receptors (HRs); in fact, HR1 and HR4 are down-regulated in CRC, while HR2 is overexpressed.
Method: Based on this evidence, we reviewed several studies investigating the role of HR2 antagonists (HR2A), such as cimetidine in CRC.
Results: From a clinical point of view, HR2A may prolong the survival rates of patients with CRC, and a recent meta-analysis seems to confirm this finding. From a biological perspective, it has been demonstrated that HR2A could have a beneficial effect on CRC for many reasons: i) promotion of peri-tumoral lymphocyte growth and improvement of immune response against the tumor, ii) suppression of adhesion molecules which might favor metastasis, iii) anti-angiogenetic activity (reduction of VEGF), iv) increased production of some cytokines which may counteract tumor growth, such as tumor necrosis factor (TNF) alpha, interleukin (IL)-10 and IL-15. On the contrary, HR1 antagonists did not demonstrate any beneficial effect on CRC. Therefore, it is presumable that histamine could be a relevant player in the development of CRC, but its effect might be mediated by an imperfect homeostasis of its receptors.
Conclusion: In this scenario, HR2A could inhibit carcinogenesis whereas HR2 might act as a pro-carcinogenetic, while HR1 and HR4, being suppressed in CRC, may antagonize neoplastic development.
Keywords: Colorectal cancer, histamine, carcinogenesis, histaminergic receptors, histamine receptor 2 antagonists, receptors.
Anti-Cancer Agents in Medicinal Chemistry
Title:Histamine and Histaminergic Receptors in Colorectal Cancer: From Basic Science to Evidence-based Medicine
Volume: 18 Issue: 1
Author(s): Giuseppe Losurdo*, Mariabeatrice Principi, Bruna Girardi, Maria Pricci, Michele Barone, Enzo Ierardi and Alfredo Di Leo
Affiliation:
- Gastroenterology Division, Department of Emergency and Organ Transplantation, University of Bari, Bari,Italy
Keywords: Colorectal cancer, histamine, carcinogenesis, histaminergic receptors, histamine receptor 2 antagonists, receptors.
Abstract: Background: Histamine is an imidazolic compound performing a crucial function in the pathogenesis of inflammation. Several studies have also emphasized its pro-carcinogenic effect in colorectal cancer (CRC).
Object: In fact, increased histamine levels have been observed in CRC and a decreased catabolism of this molecule is typical of colorectal adenomas. Additional data have demonstrated that CRC is characterized by an altered balance of histamine receptors (HRs); in fact, HR1 and HR4 are down-regulated in CRC, while HR2 is overexpressed.
Method: Based on this evidence, we reviewed several studies investigating the role of HR2 antagonists (HR2A), such as cimetidine in CRC.
Results: From a clinical point of view, HR2A may prolong the survival rates of patients with CRC, and a recent meta-analysis seems to confirm this finding. From a biological perspective, it has been demonstrated that HR2A could have a beneficial effect on CRC for many reasons: i) promotion of peri-tumoral lymphocyte growth and improvement of immune response against the tumor, ii) suppression of adhesion molecules which might favor metastasis, iii) anti-angiogenetic activity (reduction of VEGF), iv) increased production of some cytokines which may counteract tumor growth, such as tumor necrosis factor (TNF) alpha, interleukin (IL)-10 and IL-15. On the contrary, HR1 antagonists did not demonstrate any beneficial effect on CRC. Therefore, it is presumable that histamine could be a relevant player in the development of CRC, but its effect might be mediated by an imperfect homeostasis of its receptors.
Conclusion: In this scenario, HR2A could inhibit carcinogenesis whereas HR2 might act as a pro-carcinogenetic, while HR1 and HR4, being suppressed in CRC, may antagonize neoplastic development.
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Cite this article as:
Losurdo Giuseppe*, Principi Mariabeatrice, Girardi Bruna, Pricci Maria, Barone Michele, Ierardi Enzo and Di Leo Alfredo, Histamine and Histaminergic Receptors in Colorectal Cancer: From Basic Science to Evidence-based Medicine, Anti-Cancer Agents in Medicinal Chemistry 2018; 18 (1) . https://dx.doi.org/10.2174/1871520616666160321115349
DOI https://dx.doi.org/10.2174/1871520616666160321115349 |
Print ISSN 1871-5206 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5992 |
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