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de Melo IG, Tavares V, Pereira D, Medeiros R. Contribution of Endothelial Dysfunction to Cancer Susceptibility and Progression: A Comprehensive Narrative Review on the Genetic Risk Component. Curr Issues Mol Biol 2024; 46:4845-4873. [PMID: 38785560 PMCID: PMC11120512 DOI: 10.3390/cimb46050292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Revised: 05/09/2024] [Accepted: 05/13/2024] [Indexed: 05/25/2024] Open
Abstract
Venous thromboembolism (VTE) is a challenging clinical obstacle in oncological settings, marked by elevated incidence rates and resulting morbidity and mortality. In the context of cancer-associated thrombosis (CAT), endothelial dysfunction (ED) plays a crucial role in promoting a pro-thrombotic environment as endothelial cells lose their ability to regulate blood flow and coagulation. Moreover, emerging research suggests that this disorder may not only contribute to CAT but also impact tumorigenesis itself. Indeed, a dysfunctional endothelium may promote resistance to therapy and favour tumour progression and dissemination. While extensive research has elucidated the multifaceted mechanisms of ED pathogenesis, the genetic component remains a focal point of investigation. This comprehensive narrative review thus delves into the genetic landscape of ED and its potential ramifications on cancer progression. A thorough examination of genetic variants, specifically polymorphisms, within key genes involved in ED pathogenesis, namely eNOS, EDN1, ACE, AGT, F2, SELP, SELE, VWF, ICAM1, and VCAM1, was conducted. Overall, these polymorphisms seem to play a context-dependent role, exerting both oncogenic and tumour suppressor effects depending on the tumour and other environmental factors. In-depth studies are needed to uncover the mechanisms connecting these DNA variations to the pathogenesis of malignant diseases.
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Affiliation(s)
- Inês Guerra de Melo
- Molecular Oncology and Viral Pathology Group, Research Center of IPO Porto (CI-IPOP)/Pathology and Laboratory Medicine Dep., Clinical Pathology SV/RISE@CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Centre (Porto. CCC), 4200-072 Porto, Portugal; (I.G.d.M.); (V.T.)
- Faculty of Medicine of University of Porto (FMUP), 4200-072 Porto, Portugal
| | - Valéria Tavares
- Molecular Oncology and Viral Pathology Group, Research Center of IPO Porto (CI-IPOP)/Pathology and Laboratory Medicine Dep., Clinical Pathology SV/RISE@CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Centre (Porto. CCC), 4200-072 Porto, Portugal; (I.G.d.M.); (V.T.)
- Faculty of Medicine of University of Porto (FMUP), 4200-072 Porto, Portugal
- ICBAS—Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal
| | - Deolinda Pereira
- Oncology Department, Portuguese Oncology Institute of Porto (IPO Porto), 4200-072 Porto, Portugal;
| | - Rui Medeiros
- Molecular Oncology and Viral Pathology Group, Research Center of IPO Porto (CI-IPOP)/Pathology and Laboratory Medicine Dep., Clinical Pathology SV/RISE@CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Centre (Porto. CCC), 4200-072 Porto, Portugal; (I.G.d.M.); (V.T.)
- Faculty of Medicine of University of Porto (FMUP), 4200-072 Porto, Portugal
- ICBAS—Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal
- Faculty of Health Sciences, Fernando Pessoa University, 4200-150 Porto, Portugal
- Research Department, Portuguese League Against Cancer (NRNorte), 4200-172 Porto, Portugal
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Abdel Ghafar MT, Helmy AA. Genetic variants in the renin-angiotensin-aldosterone system: Impact on cancer risk, prognosis, and therapeutic directions. VITAMINS AND HORMONES 2024; 124:165-220. [PMID: 38408799 DOI: 10.1016/bs.vh.2023.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Although renin-angiotensin-aldosterone system (RAAS) is known to maintain blood pressure and electrolyte balance, it has recently been linked to a number of biological processes such as angiogenesis, tumorigenesis, metastasis, and cellular proliferation, increasing the risk of cancer development and progression. Multiple genetic variants have been found to affect the genes encoding RAAS components, altering gene transcription and protein expression. This review provides an up-to-date insight into the role of RAAS in carcinogenesis, as well as the impact of RAAS genetic variants on the risk of cancer development, progression, and patient survival and outcomes, as well as response to treatment. This paves the way for the application of precision medicine in cancer risk assessment and management by implementing preventative programs in individuals at risk and guiding the therapeutic direction in cancer patients.
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Affiliation(s)
| | - Aya A Helmy
- Clinical Pathology Departments, Faculty of Medicine, Tanta University, Egypt
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Zmorzynski S, Szudy-Szczyrek A, Popek-Marciniec S, Korszen-Pilecka I, Wojcierowska-Litwin M, Luterek M, Chocholska S, Styk W, Swiderska-Kołacz G, Januszewska J, Mielnik M, Hus M, Filip AA. ACE Insertion/Deletion Polymorphism (rs4646994) Is Associated With the Increased Risk of Multiple Myeloma. Front Oncol 2019; 9:44. [PMID: 30788288 PMCID: PMC6372536 DOI: 10.3389/fonc.2019.00044] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 01/16/2019] [Indexed: 12/31/2022] Open
Abstract
Introduction: The insertion (I allele) deletion (D allele) polymorphism of ACE gene (rs4646994) may influence the etiopathogenesis of multiple myeloma (MM). ACE gene is expressed in bone marrow cells and encodes angiotensin converting enzyme (ACE). It converts angiotensin I to active peptide angiotensin II, which stimulates proliferation of hematopoietic stem cells. This suggests possible association of ACE I/D gene polymorphism with MM. The aim of our study was to check possible impact of this polymorphism on risk of development and outcome of MM, as well as, sensitivity to bortezomib in cell cultures derived from MM patients. Objects and Methods: Genomic DNA from 98 newly diagnosed MM patients and 100 healthy blood donors were analyzed by PCR method. Chromosomal aberrations were detected by use of cIg-FISH. In a subgroup of 40 MM patients nucleated bone marrow cells were treated with bortezomib in vitro. Results: The Hardy-Weinberg equilibrium test showed that genotypic frequencies diverged significantly from the equilibrium. The differences between I and D allele frequencies in control and study population were significant (p = 0.046). We observed the association between DD genotype and more than 2-fold risk of MM - OR = 2.69; p < 0.0001. We did not detect any significant differences among studied genotypes regarding clinical and laboratory parameters. Moreover, we did not observe the association between survival of MM patients and I/D genotypes. Bortezomib increased number of apoptotic and necrotic cells, but the only statistically significant differences were observed in the number of viable cells at 1 nM between ID and DD genotypes (p = 0.026). Conclusion: Presented results confirmed the significant relationship between ACE (I/D) polymorphism and risk of MM development. We did not observe the association of ACE I/D polymorphism with disease outcome and bortezomib in vitro sensitivity.
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Affiliation(s)
- Szymon Zmorzynski
- Department of Cancer Genetics with Cytogenetic Laboratory, Medical University of Lublin, Lublin, Poland
| | - Aneta Szudy-Szczyrek
- Chair and Department of Hematooncology and Bone Marrow Transplantation, Medical University of Lublin, Lublin, Poland
| | - Sylwia Popek-Marciniec
- Department of Cancer Genetics with Cytogenetic Laboratory, Medical University of Lublin, Lublin, Poland
| | - Iwona Korszen-Pilecka
- Department of Cancer Genetics with Cytogenetic Laboratory, Medical University of Lublin, Lublin, Poland
| | | | - Małgorzata Luterek
- Department of Cancer Genetics with Cytogenetic Laboratory, Medical University of Lublin, Lublin, Poland
| | - Sylwia Chocholska
- Chair and Department of Hematooncology and Bone Marrow Transplantation, Medical University of Lublin, Lublin, Poland
| | - Wojciech Styk
- Department of Cancer Genetics with Cytogenetic Laboratory, Medical University of Lublin, Lublin, Poland
| | | | | | - Michal Mielnik
- Chair and Department of Hematooncology and Bone Marrow Transplantation, Medical University of Lublin, Lublin, Poland
| | - Marek Hus
- Chair and Department of Hematooncology and Bone Marrow Transplantation, Medical University of Lublin, Lublin, Poland
| | - Agata A Filip
- Department of Cancer Genetics with Cytogenetic Laboratory, Medical University of Lublin, Lublin, Poland
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Koca E, Haznedaroglu IC, Acar K, Beyazit Y, Aksu S, Misirlioglu M, Tuncer S, Sayinalp N, Ozcebe OI, Uner A. Renin-angiotensin system expression in the K562 human erythroleukaemic cell line. J Renin Angiotensin Aldosterone Syst 2016; 8:145-7. [PMID: 17907103 DOI: 10.3317/jraas.2007.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Local renin-angiotensin system (RAS) may affect leukaemic cell production within the bone marrow microenvironment.Angiotensin-converting enzyme (ACE), renin, and angiotensin could influence leukaemogenesis. In this study, mRNA expressions of the major RAS components (ACE, renin, and angiotensinogen) in K562 human erythroleukaemia cell line have been searched by Real Time quantitative polymerase chain reaction. K562 blasts are multipotential, haematopoietic malignant cells that spontaneously differentiate into recognisable progenitors of the erythrocyte, granulocyte and monocytic series.We observed significant expressions of ACE, renin, and angiotensinogen in K562 leukaemic blast cells.Therefore, K562 human erythroleukaemia cell line may serve as an in vitro model to elucidate the role of RAS in leukaemia and to test the effects of RAS-affecting drugs on leukaemic cellular proliferation.
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Affiliation(s)
- Ebru Koca
- Hacettepe University Medical School, Departments of Internal Medicine and Haematology, Ankara, Turkey.
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Yaren A, Turgut S, Kursunluoglu R, Oztop I, Turgut G, Degirmencioglu S, Kelten C, Erdem E. Insertion/Deletion Polymorphism of the Angiotensin I-Converting Enzyme Gene in Patients with Breast Cancer and Effects on Prognostic Factors. J Investig Med 2015; 55:255-61. [PMID: 17850737 DOI: 10.2310/6650.2007.00006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The aims of the present study were to investigate the distribution of the insertion/deletion (I/D) polymorphism of the angiotensin-converting enzyme (ACE) gene in breast cancer patients and the association between ACE genotypes and clinicopathologic features, as well as their effects on prognosis. We assessed the I/D polymophism of the ACE gene by using polymerase chain reaction from peripheral blood in breast cancer and healthy age-matched women. The clinicopathologic parameters of breast cancer patients were obtained from medical records. Of the 57 patients, 31 (54.4%) had DD, 24 (42.1%) had ID, and 2 (3.5%) had II genotypes. In control subjects, 33 (63.5%) had DD, 12 (23.1%) had ID, and 7 (13.4%) had II genotypes. The ID genotype was seen more commonly in breast cancer patients (p = .03). When the combination of ID and II genotypes was used as a reference group, the DD genotype was associated with negative hormone receptor status (p = .003), tumor size (p = .054), and lymph node involvement (p = .07) but not histologic high grade and c-erb B2 overexpression. These results suggest that the DD genotype may accompany poor prognostic factors and influence the tumor course.
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Affiliation(s)
- Arzu Yaren
- Department of Internal Medicine, Division of Medical Oncology, Faculty of Medicine, University of Pamukkale, Denizli, Turkey.
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Pehlivan M, Sahin HH, Ozdilli K, Onay H, Ozcan A, Ozkinay F, Pehlivan S. Gene Polymorphisms and Febrile Neutropenia in Acute Leukemia—No Association with IL-4, CCR-5, IL-1RA, but the MBL-2, ACE, and TLR-4 Are Associated with the Disease in Turkish Patients: A Preliminary Study. Genet Test Mol Biomarkers 2014; 18:474-81. [DOI: 10.1089/gtmb.2014.0004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Mustafa Pehlivan
- Department of Hematology, School of Medicine, Gaziantep University, Gaziantep, Turkey
| | | | - Kurşat Ozdilli
- Department of Medical Biology, Medipol University Hospital, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Hüseyin Onay
- Department of Medical Genetics, Ege University School of Medicine, Izmir, Turkey
| | - Ali Ozcan
- Department of Medical Genetics, Ege University School of Medicine, Izmir, Turkey
| | - Ferda Ozkinay
- Department of Medical Genetics, Ege University School of Medicine, Izmir, Turkey
| | - Sacide Pehlivan
- Department of Medical Biology, Medipol University Hospital, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
- Department of Medical Genetics, Ege University School of Medicine, Izmir, Turkey
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Haznedaroglu IC, Beyazit Y. Review: Pathobiological aspects of the local bone marrow renin-angiotensin system: a review. J Renin Angiotensin Aldosterone Syst 2010; 11:205-13. [DOI: 10.1177/1470320310379876] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
The local haematopoietic bone marrow (BM) renin—angiotensin system (RAS) mediates pathobiological alterations of haematopoiesis in an autocrine/paracrine/intracrine fashion. Recent data further indicated the existence of angiotensin-converting enzyme (ACE) in human primitive lympho-haematopoietic cells, embryonic, foetal and adult haematopoietic tissues. Human umbilical cord blood cells also express renin, angiotensinogen, and ACE mRNAs. As ACE and other angiotensin peptides function in human haematopoietic stem cells (HSCs) throughout haematopoietic ontogeny and adulthood, local RAS could also have a function in HSC plasticity, and the development of haematological neoplastic disorders. The presence of ACE on leukaemic blast cells within leukaemic BM, on erythroleukaemic cells, ACE-expressing macrophages in lymph nodes of Hodgkin disease, renin activity in leukaemic blasts, angiotensin II as an autocrine growth factor for AML, increased renin gene activity during NUP98-HOXA9 enhanced blast formation, higher levels of BB9/ACE (+) AML isoforms, and altered JAK-STAT pathway as a link between RAS and leukaemia indicated the wide pathobiological aspects of local BM RAS. The comparable biological actions of local RASs throughout the human body (including myocardium, pancreas, pituitary gland, ovary and kidney) represent the true basis for the search of their prominence in tissue functions. Recent data and perspectives of the local BM RAS in health and disease are reviewed in this paper.
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Affiliation(s)
| | - Yavuz Beyazit
- Turkiye Yuksek Ihtisas Training and Research Hospital, Department of Gastroenterology, Ankara, Turkey,
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Arima H, Kiyohara Y, Tanizaki Y, Nakabeppu Y, Kubo M, Kato I, Sueishi K, Tsuneyoshi M, Fujishima M, Iida M. Angiotensin I-converting enzyme gene polymorphism modifies the smoking-cancer association: the Hisayama Study. Eur J Cancer Prev 2006; 15:196-201. [PMID: 16679861 DOI: 10.1097/01.cej.0000199506.15571.37] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We examined the long-term contribution of smoking and angiotensin I-converting enzyme (ACE) gene I/D polymorphism to total cancer deaths in a prospective study of a general Japanese population. A total of 937 subjects aged 40 years or older were selected from an original cohort of 1621 subjects and were followed up for 32 years. During the follow-up period, 176 subjects died of cancer. Cancer mortality increased significantly with increasing current smoking levels. Although no clear relationship was observed between ACE genotypes and fatal cancer, the interaction term between current smoking and ACE genotype DD was found to be significant. In stratified analysis by ACE genotype after controlling for age, sex, alcohol intake, body mass index, glucose intolerance, serum total cholesterol and systolic blood pressure, the risk of fatal cancer in currently smoking subjects with genotype DD was twofold greater than that in subjects with genotypes II and ID. Among current smokers, subjects with genotype DD also showed a significantly greater risk of death due to cancer compared with those with genotypes II and ID combined (hazard ratio 1.77; 95% confidence interval 1.04-3.00; P=0.03). In conclusion, our findings suggest that ACE genotype DD enhances the association between smoking and cancer death in the general population.
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Affiliation(s)
- Hisatomi Arima
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
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Aksu S, Beyazit Y, Haznedaroglu IC, Canpinar H, Kekilli M, Uner A, Sayinalp N, Büyükaşik Y, Goker H, Ozcebe OI. Over-expression of angiotensin-converting enzyme (CD 143) on leukemic blasts as a clue for the activated local bone marrow RAS in AML. Leuk Lymphoma 2006; 47:891-6. [PMID: 16753875 DOI: 10.1080/10428190500399250] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Local bone marrow renin-angiotensin system (RAS) is an autocrine-paracrine system affecting hematopoiesis. Angiotensin II type 1a (AT1a) receptors are present on the CD34+ hematopoietic stem cells. Angiotensin II stimulates the proliferation of bone marrow and umbilical cord blood hematopoietic progenitors. There are preliminary data that local RAS might also be involved in leukemogenesis. ACE hyper-function may lead to the acceleration of negative hematopoietic regulator peptide, AcSDKP, metabolism, which in turn lowers its level in the bone marrow micro-environment, finally removing the anti-proliferative effect of AcSDKP on the hematopoietic cells and blasts. Renin expression could have a role on the leukemia development and angiotensin may act as an autocrine growth factor for acute myeloid leukemia (AML) cells. The aim of this study is to search ACE (CD 143) surface antigen by flow-cytometric analyses on the leukemic blast cells taken from the bone marrow of the patients with AML. Bone marrow aspiration materials and peripheral blood samples were obtained from 11 patients with AML (eight males, three females; aged 46 (range 26-67) years) and six patients with non-malignant hematological disorders (four males, two females; aged 56 (range 22-71) years). ACE (CD 143) surface antigen was shown to be over-expressed in leukemic myeloid blast cells. ACE is positively correlated with bone marrow blast count. Elucidation of the pathological activity of the local RAS-mediated regulation of the leukemogenesis is both pathobiologically and clinically important, since the angiotensin peptides represent a molecular target in the disease management.
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Affiliation(s)
- Salih Aksu
- Department of Internal Medicine and Hematology, Hacettepe University Medical School, Ankara, Turkey.
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Yaren A, Turgut S, Kursunluoglu R, Oztop I, Turgut G, Kelten C, Erdem E. Association between the Polymorphism of the Angiotensin-Converting Enzyme Gene and Tumor Size of Breast Cancer in Premenopausal Patients. TOHOKU J EXP MED 2006; 210:109-16. [PMID: 17023764 DOI: 10.1620/tjem.210.109] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The association between the polymorphism of the angiotensin-converting enzyme (ACE) gene and breast cancer risk has been extensively studied, however, the studies about the prognostic factors and ACE gene polymorphism are limited in number. Our aims were to analyze the distribution of the insertion/deletion (I/D) polymorphism of the ACE gene in Turkish premenopausal patients with breast cancer, which is more aggressive than the postmenopausal counterpart, and to assess whether DD genotype is associated with poor prognostic factors. The DD genotype has been shown to be associated with the increased serum and tissue levels of ACE, compared to those in II and ID genotypes. ACE genotypes were determined by polymerase chain reaction in 44 Turkish premenopausal patients with breast cancer and in 46 age-matched healthy premenopausal women. ACE genotypes are distributed in patients and control subjects as follows; DD is present in 25 (56.8%), ID in 17 (38.6%), and II in 2 (4.5%) patients, and DD in 28 (60.9%), ID in 12 (26.1%), and II in 6 (13.0%) healthy subjects, respectively. D and I alleles were found in 76.1% and 23.9% of the patients, while 73.9% and 26.1% in healthy subjects, respectively. In breast cancer patients, no significant association was observed between the ACE genotypes and poor prognostic factors, such as negative hormone receptor status, histological grade, lymph node involvement, higher number of lymph node metastases, and c-erb B2 overexpression, except that tumor size greater than 2 cm is associated with DD genotype (p = 0.02). Thus, ACE may influence the local tumor growth of breast cancer in premenopausal patients.
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Affiliation(s)
- Arzu Yaren
- Department of Internal Medicine, Division of Medical Oncology, University of Pamukkale, Faculty of Medicine
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Röcken C, Lendeckel U, Dierkes J, Westphal S, Carl-McGrath S, Peters B, Krüger S, Malfertheiner P, Roessner A, Ebert MPA. The number of lymph node metastases in gastric cancer correlates with the angiotensin I-converting enzyme gene insertion/deletion polymorphism. Clin Cancer Res 2005; 11:2526-30. [PMID: 15814629 DOI: 10.1158/1078-0432.ccr-04-1922] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
PURPOSE In the present study, we aimed to substantiate the putative significance of angiotensin I-converting enzyme (ACE) on gastric cancer biology by investigating the influence of its gene polymorphism on gastric cancer progression. EXPERIMENTAL DESIGN Genomic DNA was purified from peripheral blood mononuclear cells or tissue specimens. Amplified ACE gene fragments were separated on agarose gels. D or I alleles were identified by the presence of 190- or 490-bp fragments, respectively. Local expression of ACE was investigated by immunohistochemistry. RESULTS Twenty-four of 113 (21%) gastric cancer patients had the II, 57 (51%) the ID, and 32 (28%) the DD genotype. The distribution of the ACE genotypes did not differ significantly from the control group of 189 patients without gastric cancer. However, the ACE genotypes correlated with the number of lymph node metastases and the Unio Internationale Contra Cancrum (UICC) tumor stage. Patients with the II genotype had a highly significantly smaller number of lymph node metastases (P < 0.001) and a significantly lower UICC tumor stage (P = 0.01) than patients with the DD genotype. No correlation was found between tumor type, tumor location, local tumor growth, distant metastases, and the ACE genotype. The expression of ACE in gastric cancer was investigated by immunohistochemistry in 100 of 113 patients. ACE was expressed by endothelial cells in all (100%) specimens and by tumor cells in 56 (56%) specimens. CONCLUSIONS Our study shows that ACE is expressed locally in gastric cancer and that the gene polymorphism influences metastatic behavior.
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Affiliation(s)
- Christoph Röcken
- Department of Pathology, Institutes of Experimental Internal Medicine, Clinical Chemistry, and Biometrics, Otto-von-Guericke-University, Magdeburg, Germany.
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Arias-Vásquez A, Sayed-Tabatabaei FA, Schut AFC, Hofman A, Bertolli-Avella AM, Vergeer JM, Aulchenko YS, Witteman JCM, van Duijn CM. Angiotensin converting enzyme gene, smoking and mortality in a population-based study. Eur J Clin Invest 2005; 35:444-9. [PMID: 16008546 DOI: 10.1111/j.1365-2362.2005.01515.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND The genetic and environmental risk factors, which may influence longevity and mortality, have received much attention during more than one decade. One of the major risks for mortality is cardiovascular disease and the renin angiotensin system (RAS) plays a major role in maintaining blood pressure homeostasis. In this system, the Angiotensin Converting Enzyme (ACE) is one of the key regulators and has been studied in relation to cardiovascular disease and mortality. We aimed to evaluate if the ACE I/D polymorphism is related to total mortality in the elderly. MATERIALS AND METHODS Some 6968 elderly individuals from the Rotterdam study were genotyped for this polymorphism. Smoking was studied as a possible covariable or effect modifier. To examine the effect of the ACE genotype on mortality, a Cox proportional hazards model was fitted. RESULTS Our results show an increased risk of total mortality in subjects with age at death below 65 years carriers of the DD genotype (HR 1.8, 95% CI 1.1-2.9, P = 0.016). This association was significant in total and cause specific mortality only in those who smoke (P-value < 0.001 for gene-age interaction). Our findings suggest that the ACE gene is rather associated with early mortality than with late. CONCLUSIONS Individuals who carry the DD genotype appear to be susceptible to early mortality if they smoke, suggesting a possible interaction between smoking and the ACE gene.
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Affiliation(s)
- A Arias-Vásquez
- Genetic Epidemiology Unit, Department of Epidemiology and Biostatistics, Erasmus MC Rotterdam, Netherlands.
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Hajek D, Kolar P, Maini PK, Starha P. Extracellular volume regulation and growth. Med Hypotheses 2004; 64:303-6. [PMID: 15607560 DOI: 10.1016/j.mehy.2004.06.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2004] [Accepted: 06/02/2004] [Indexed: 10/26/2022]
Abstract
We have formalized extracellular and intracellular volume interaction with each other and the influence of these processes on the type of cell growth. The linearized model was verified by stereo metric solution and the results were compared with experimental data. Two theoretical solutions were found: Solution 1, extracellular volume (ECV) was calculated to be about 23% of total body volume (TV). Stereo metric solution suggested the cubic cell cluster formed by 8-cells. This hypothesis (Solution l) explains the ECV to be compatible with the widely accepted value (about 23% of TV). In addition, the 8-cell cluster hypothesis explains the existence of ECV oscillation with the period of about seven days. This hypothesis probably describes the dominant type of growth in humans. Solution 2, in this type of growth, ECV fills about 77% per cent of TV. Instead of the 8-cell cube, in this type of proliferation 4-cells could form a tetrahedron. This type of growth could be beneficial in processes where free space in tissue or organ must be filled for example in peptic ulcer healing and namely in repopulating of free space in a bone after high dose chemotherapy.
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Affiliation(s)
- Dobroslav Hajek
- Medical Faculty, Institute of Pathophysiology, Masaryk University, Komenskeho namesti 2, CZ 664 43, Brno, Czech Republic.
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