Copyright © 2001 by the European Society of Cardiology.
Antihypertensive therapy and the risk of malignancies
a Internal Medicine D, The Chaim Sheba Medical Center, Tel-Hashomer, Israel
b Department of Internal Medicine, Section on Hypertensive Diseases, Ochsner Clinic and Alton Ochsner Medical Foundation, New Orleans, LA, U.S.A.
c The Neufeld Cardiac Institute, The Chaim Sheba Medical Center, Tel-Hashomer, Israel
d Division of Epidemiology and Preventive Medicine, Sackler School of Medicine, Tel-Aviv University, Israel
revised April 3, 2001; accepted April 4, 2001
Abstract
Aims To assess the relationship between antihypertensive therapy and malignancy.
Methods and Results A MEDLINE search for English-language articles published between January 1966 and August 1999 identified 29 prospective studies that reported cancer incidence or mortality and 28 case-control studies that reported specific drug use in cancer patients and controls. The association between rauwolfia derivatives and breast cancer was analysed in 5852 cases and 9776 controls, yielding an odds ratio (OR) of 1·25 (95% CI, 1·091·44). The association between diuretics and renal cell carcinoma was analysed in 4389 cases and 6566 controls, yielding a pooled OR of 1·54 (95% CI, 1·411·68). The association between atenolol and cancer death was analysed pooling three randomized controlled studies, including 1879 treated patients and 3078 non-treated patients, yielding a pooled OR of 1·36 (95% CI, 1·021·82); however, data from non-randomized studies did not confirm the latter. The association between calcium antagonists and malignancy was analysed pooling five randomized controlled studies, including 5451 treated patients and 5207 untreated ones, yielding a pooled OR of 0·78 (CI, 0·601·00). A meta-analysis of an additional five longitudinal studies, including 9087 treated patients and 15559 non-treated patients, yielded a pooled OR of 1·04 (CI, 0·911·19). The association between ACE inhibitors and malignancy was analysed pooling two randomized controlled trials involving 1585 treated patients and 1567 non-treated patients, yielding a pooled OR of 1·57 (95% CI, 0·972·57); however, non-randomized studies showed no association or a decreased risk for malignancy with ACE inhibitors.
Conclusions With the exception of diuretics and renal cell carcinoma, the association between antihypertensive drugs and malignancy was either low grade (rauwolfia), uncertain (atenolol), absent (ACE inhibitors), or absent with a yet to be investigated inverse association (calcium antagonists). Ongoing long-term prospective studies with cardiovascular drugs should carefully monitor the risk of malignancy.
Key Words: Antihypertensive therapy and malignancy, diuretics, renal cell carcinoma, calcium antagonists, ACE inhibitors
f1 Correspondence: Franz H. Messerli, MD, Ochsner Clinic, 1514 Jefferson Highway, New Orleans, LA 70121, U.S.A.
References
- Br Med J (Clin Res Ed). 1985;291:97104[Medline]
- Lancet. 1980;1:12611267[Medline]
- Br Med J. 1992;304:405412
[Abstract/Free Full Text] - Staessen J, Bulpitt C, Clement D. Relation between mortality and treated blood pressure in elderly patients with hypertension: report of the European Working Party on High Blood Pressure in the Elderly. Br Med J. 1989;298:15521556
[Abstract/Free Full Text] - JAMA. 1991;265:32553264
[Abstract/Free Full Text] - Williams RR, Feinleib M, Connor RJ, Stegens NL. Case-control study of antihypertensive and diuretic use by women with malignant and benign breast lesions detected in a mammography screening program. J Natl Cancer Inst. 1978;61:327335[Web of Science][Medline]
- Fraser GE, Phillips RL, Beeson WL. Hypertension, antihypertensive medication and risk of renal carcinoma in California Seventh-Day Adventists. Int J Epidemiol. 1990;19:832838
[Abstract/Free Full Text] - Grove JS, Nomura A, Severson RK, Stemmermann GN. The association of blood pressure with cancer incidence in a prospective study. Am J Epidemiol. 1991;134:942947
[Abstract/Free Full Text] - McCredie M, Stewart JH. Risk factors for kidney cancer in New South Wales, Australia. II. Urologic disease, hypertension, obesity, and hormonal factors. Cancer Causes Control. 1992;3:323331[CrossRef][Web of Science][Medline]
- Suadicani P, Hein HO, Gyntelberg F. Is the use of antihypertensives and sedatives a major risk factor for colorectal cancer? Scand J Gastroenterol. 1993;28:475481[Web of Science][Medline]
- McLaughlin JK, Chow WH, Mandel JS. International renal-cell cancer study. VIII. Role of diuretics, other anti-hypertensive medications and hypertension. Int J Cancer. 1995;63:216221[Web of Science][Medline]
- Chow WH, McLaughlin JK, Mandel JS, Wacholder S, Niwa S, Fraumeni JF Jr. Risk of renal cell cancer in relation to diuretics, antihypertensive drugs, and hypertension. Cancer Epidemiol Biomarkers Prev. 1995;4:327331[Abstract]
- Peeters PH, van Noord PA, Hoes AW, Grobbee DE. Hypertension, antihypertensive drugs, and mortality from cancer among women. J Hypertens. 1998;16:941947[CrossRef][Web of Science][Medline]
- Rosenberg L, Rao RS, Palmer JR. Calcium channel blockers and the risk of cancer. JAMA. 1998;279:10001004
[Abstract/Free Full Text] - Lancet. 1974;2:669671[Medline]
- Mellemgaard A, Moller H, Olsen JH. Diuretics may increase risk of renal cell carcinoma. Cancer Causes Control. 1992;3:309312[CrossRef][Web of Science][Medline]
- Kreiger N, Marrett LD, Dodds L, Hilditch S, Darlington GA. Risk factors for renal cell carcinoma: results of a population-based case-control study. Cancer Causes Control. 1993;4:101110[CrossRef][Web of Science][Medline]
- Mellemgaard A, Niwa S, Mehl ES, Engholm G, McLaughlin JK, Olsen JH. Risk factors for renal cell carcinoma in Denmark: role of medication and medical history. Int J Epidemiol. 1994;23:923930
[Abstract/Free Full Text] - Finkle WD, McLaughlin JK, Rasgon SA, Yeoh HH, Low JE. Increased risk of renal cell cancer among women using diuretics in the United States. Cancer Causes Control. 1993;4:555558[CrossRef][Web of Science][Medline]
- Hiatt RA, Tolan K, Quesenberry CP Jr. Renal cell carcinoma and thiazide use: a historical, case-control study (California, USA). Cancer Causes Control. 1994;5:319325[CrossRef][Web of Science][Medline]
- Weinmann S, Glass AG, Weiss NS, Psaty BM, Siscovick DS, White E. Use of diuretics and other antihypertensive medications in relation to the risk of renal cell cancer. Am J Epidemiol. 1994;140:792804
[Abstract/Free Full Text] - Pahor M, Guralnik JM, Salive ME, Corti MC, Carbonin P, Havlik RJ. Do calcium channel blockers increase the risk of cancer? Am J Hypertens. 1996;9:695699[CrossRef][Web of Science][Medline]
- Pahor M, Guralnik JM, Ferrucci L. Calcium-channel blockade and incidence of cancer in aged populations. Lancet. 1996;348:493497[CrossRef][Web of Science][Medline]
- Fitzpatrick AL, Daling JR, Furberg CD, Kronmal RA, Weissfeld JL. Use of calcium channel blockers and breast carcinoma risk in postmenopausal women. Cancer. 1997;80:14381447[CrossRef][Web of Science][Medline]
- Armstrong B, Stevens N, Doll R. Retrospective study of the association between use of rauwolfia derivatives and breast cancer in English women. Lancet. 1974;2:672675[Web of Science][Medline]
- Heinonen OP, Shapiro S, Tuominen L, Turunen MI. Reserpine use in relation to breast cancer. Lancet. 1974;2:675677[Web of Science][Medline]
- Mack TM, Henderson BE, Gerkins VR, Arthur M, Baptista J, Pike MC. Reserpine and breast cancer in a retirement community. N Engl J Med. 1975;292:13661371[Abstract]
- O'Fallon WM, Labarthe DR, Kurland LT. Rauwolfia derivatives and breast cancer. A case/control study in Olmsted County, Minnesota. Lancet. 1975;2:292296[CrossRef][Medline]
- Laska EM, Siegel C, Meisner M, Fischer S, Wanderling J. Matched-pairs study of reserpine use and breast cancer. Lancet. 1975;2:296300[CrossRef][Web of Science][Medline]
- Armstrong B, Skegg D, White G, Doll R. Rauwolfia derivatives and breast cancer in hypertensive women. Lancet. 1976;2:812[CrossRef][Web of Science][Medline]
- Lilienfeld AM, Chang L, Thomas DB, Levin ML. Rauwolfia derivatives and breast cancer. Johns Hopkins Med J. 1976;139:4150[Web of Science][Medline]
- Aromaa A, Hakama M, Hakulinen T, Saxen E, Teppo L, Ida lan-Heikkila J. Breast cancer and use of rauwolfia and other antihypertensive agents in hypertensive patients: a nationwide case-control study in Finland. Int J Cancer. 1976;18:727738[Web of Science][Medline]
- Kewitz H, Jesdinsky HJ, Schroter PM, Lindtner E. Reserpine and breast cancer in women in Germany. Eur J Clin Pharmacol. 1977;11:7983[CrossRef][Web of Science][Medline]
- Christopher LJ, Crooks J, Davidson JF. A multicentre study of rauwolfia derivates and breast cancer. Eur J Clin Pharmacol. 1977;11:409417[CrossRef][Web of Science][Medline]
- Kodlin D, McCarthy N. Reserpine and breast cancer. Cancer. 1978;41:761768[CrossRef][Web of Science][Medline]
- Shapiro S, Parsells JL, Rosenberg L, Kaufman DW, Stolley PD, Schottenfeld D. Risk of breast cancer in relation to the use of rauwolfia alkaloids. Eur J Clin Pharmacol. 1984;26:143146[CrossRef][Web of Science][Medline]
- Labarthe DR, O'Fallon WM. Reserpine and breast cancer. A community-based longitudinal study of 2,000 hypertensive women. JAMA. 1980;243:23042310
[Abstract/Free Full Text] - Curb JD, Hardy RJ, Labarthe DR, Borhani NO, Taylor JO. Reserpine and breast cancer in the Hypertension Detection and Follow-Up Program. Hypertension. 1982;4:307311
[Abstract/Free Full Text] - Friedman GD. Rauwolfia and breast cancer: no relation found in long term users age fifty and over. J Chronic Dis. 1983;36:367370[CrossRef][Web of Science][Medline]
- Yu MC, Mack TM, Hanisch R, Cicioni C, Henderson BE. Cigarette smoking, obesity, diuretic use, and coffee consumption as risk factors for renal cell carcinoma. J Natl Cancer Inst. 1986;77:351356[Web of Science][Medline]
- Shapiro JA, Williams MA, Weiss NS, Stergachis A, LaCroix AZ, Barlow WE. Hypertension, antihypertensive medication use, and risk of renal cell carcinoma. Am J Epidemiol. 1999;149:521530
[Abstract/Free Full Text] - Prineas RJ, Folsom AR, Zhang ZM, Sellers TA, Potter J. Nutrition and other risk factors for renal cell carcinoma in postmenopausal women. Epidemiology. 1997;8:3136[Web of Science][Medline]
- Heath CW Jr, Lally CA, Calle EE, McLaughlin JK, Thun MJ. Hypertension, diuretics, and antihypertensive medications as possible risk factors for renal cell cancer. Am J Epidemiol. 1997;145:607613
[Abstract/Free Full Text] - Coope J, Warrender TS. Randomised trial of treatment of hypertension in elderly patients in primary care. Br Med J (Clin Res Ed). 1986;293:11451151[Medline]
- BMJ. 1998;317:713720
[Abstract/Free Full Text] - Hole DJ, Hawthorne VM, Isles CG. Incidence of and mortality from cancer in hypertensive patients. Br Med J. 1993;306:609611
[Abstract/Free Full Text] - Fletcher AE, Beevers DG, Bulpitt CJ. Cancer mortality and atenolol treatment. BMJ. 1993;306:622623
[Free Full Text] - Jick H, Jick S, Derby LE, Vasilakis C, Myers MW, Meier CR. Calcium-channel blockers and risk of cancer. Lancet. 1997;349:525528[CrossRef][Web of Science][Medline]
- Borhani, NO, Mercuri, M, Borhani, PA, Final outcome results of the Multicenter Isradipine Diuretic Atherosclerosis Study (MIDAS), A randomized controlled trial, JAMA, 1996, 276, 785, 91
- Packer M, O'Connor CM, Ghali JK. Effect of amlodipine on morbidity and mortality in severe chronic heart failure. N Engl J Med. 1996;335:11071114
[Abstract/Free Full Text] - Gong L, Zhang W, Zhu Y. Shanghai trial of nifedipine in the elderly (STONE). J Hypertens. 1996;14:12371245[Web of Science][Medline]
- Staessen JA, Fagard R, Thijs L. Randomised double-blind comparison of placebo and active treatment for older patients with isolated systolic hypertension. Lancet. 1997;350:757764[CrossRef][Web of Science][Medline]
- Liu L, Wang JG, Gong L. Comparison of active treatment and placebo in older Chinese patients with isolated systolic hypertension. J Hypertens. 1998;16:18231829[CrossRef][Web of Science][Medline]
- Jonas M, Goldbourt U, Boyko V, Mandelzweig L, Behar S, Reicher-Reiss H. Nifedipine and cancer mortality: ten-year follow-up of 2607 patients after acute myocardial infarction. Cardiovasc Drugs Ther. 1998;12:177181[CrossRef][Web of Science][Medline]
- Hole DJ, Gillis CR, McCallum IR. Cancer risk of hypertensive patients taking calcium antagonists. J Hypertens. 1998;16:119124[CrossRef][Web of Science][Medline]
- Braun S, Boyko V, Behar S. Calcium channel blocking agents and risk of cancer in patients with coronary heart disease. J Am Coll Cardiol. 1998;31:804808
[Abstract/Free Full Text] - Olsen JH, Toft Sorensen HT, Friis S. Cancer risk in users of calcium channel blockers. Hypertension. 1997;29:10911094
[Abstract/Free Full Text] - N Engl J Med. 1992;327:685691[Abstract]
- Maschio G, Alberti D, Janin G. Effect of the angiotensin-converting-enzyme inhibitor benazepril on the progression of chronic renal insufficiency. N Engl J Med. 1996;334:939945
[Abstract/Free Full Text] - Lever AF, Hole DJ, Gillis CR. Do inhibitors of angiotensin-I-converting enzyme protect against risk of cancer? Lancet. 1998;352:179184[CrossRef][Web of Science][Medline]
- Kaufman DW, Kelly JP, Rosenberg L, Stolley PD, Schottenfeld D, Shapiro S. Hydralazine and breast cancer. J Natl Cancer Inst. 1987;78:243246[Web of Science][Medline]
- Kaufman DW, Kelly JP, Rosenberg L, Stolley PD, Warshauer ME, Shapiro S. Hydralazine use in relation to cancers of the lung, colon, and rectum. Eur J Clin Pharmacol. 1989;36:259264[CrossRef][Web of Science][Medline]
- Gahlinger, PM, Abramson, JH, CASECONT and COMBINE in Programs for Epidemiologic Analysis (PEPI) version 2, 1995, 33, 41
- Fleiss JL. Statistical Methods for Rates and Proportions. New York: John Wiley & Sons; 1991.
- Brandenburg NA, Backstrom JT, Hinkle RL. Calcium channel blockers and cancer: the evidence against an association [letter]. Am J Hypertens. 1996;9:10491050[CrossRef][Web of Science][Medline]
- Weisenburger DD. Immunoblastic lymphadenopathy associated with methyldopa therapy: a case report. Cancer. 1978;42:23222327[CrossRef][Web of Science][Medline]
- Broden G, Bengtsson L. Biliary carcinoma associated with methyldopa therapy. Acta Chir Scand Suppl. 1980;500:712[Medline]
- Strom BL, Hibberd PL, Stolley PD. No evidence of association between methyldopa and biliary carcinoma. Int J Epidemiol. 1985;14:8690
[Abstract/Free Full Text] - Dyer AR, Stamler J, Berkson DM, Lindberg HA, Stevens E. High blood-pressure: a risk factor for cancer mortality? Lancet. 1975;1:10511056[Web of Science][Medline]
- Newball HH, Byar DP. Does reserpine increase prolactin and exacerbate cancer of prostate? Case control study. Urology. 1973;2:525529[CrossRef][Medline]
- Byar DP, Blackard CE. Reserpine and prostatic cancer (letters). Urology. 1975;5:158159[Medline]
- Lijinsky W, Reuber MD. Pathologic effects of chronic administration of hydrochlorothiazide, with and without sodium nitrite, to F344 rats. Toxicol Ind Health. 1987;3:413422[Web of Science][Medline]
- Loffing J, Loffing-Cueni D, Hegyi I. Thiazide treatment of rats provokes apoptosis in distal tubule cells. Kidney Int. 1996;50:11801190[Web of Science][Medline]
- Zavanella T, Radaelli G, Girotti P. Evaluation of the tumor-promoting activity of two beta-adrenoreceptor blocking agents, propranolol and atenolol, in liver of Fischer 344 rats. Carcinogenesis. 1994;15:25312539
[Abstract/Free Full Text] - Ioannides C, Okine L, Parke DV. Effects of beta-adrenoceptor antagonists on the hepatic mixed-function oxygenases in the rat [proceedings]. Br J Pharmacol. 1979;67:451P452P[Medline]
- Boyd H, Martin TJ. The effect of propranolol on induction of rat liver tumors by a chemical carcinogen. Mol Pharmacol. 1977;13:576578
[Abstract/Free Full Text] - Gurkalo VK, Zabezhinski MA. On participation of the autonomic nervous system in the mechanisms of chemical carcinogenesis. Neoplasma. 1982;29:301307[Web of Science][Medline]
- Messerli FH, Grossman E. Antihypertensive agents and the risk of cancer [letter]. JAMA. 1998;280:600
[Free Full Text] - Mickisch GH, Kossig J, Keilhauer G, Schlick E, Tschada RK, Alken PM. Effects of calcium antagonists in multidrug resistant primary human renal cell carcinomas. Cancer Res. 1990;50:36703674
[Abstract/Free Full Text] - al-Shabanah OA, Osman AM, al-Harbi MM, al-Bekairi AM, al-Gharably NM, Aziz SA. Diltiazem potentiation of doxorubicin cytotoxicity and cellular uptake in Ehrlich ascites carcinoma cells. Chemotherapy. 1995;41:368377[Web of Science][Medline]
- al-Gharably NM, Osman AM, al-Shabanah OA, al-Bekairi AM, al-Harbi MM. Potentiation of doxorubicin cytotoxicity by the calcium channel blocker verapamil in Ehrlich ascites cells. Chemotherapy. 1993;39:410415[Web of Science][Medline]
- Kunert-Radek J, Stepien H, Radek A, Lyson K, Pawlikowski M. Inhibitory effect of calcium channel blockers on proliferation of human glioma cells in vitro. Acta Neurol Scand. 1989;79:166169[Web of Science][Medline]
- Lee YS, Sayeed MM, Wurster RD. Intracellular Ca2+ mediates the cytotoxicity induced by bepridil and benzamil in human brain tumor cells. Cancer Lett. 1995;88:8791[CrossRef][Web of Science][Medline]
- Raderer M, Scheithauer W. Clinical trials of agents that reverse multidrug resistance. A literature review. Cancer. 1993;72:35533563[CrossRef][Web of Science][Medline]
- Taylor JM, Simpson RU. Inhibition of cancer cell growth by calcium channel antagonists in the athymic mouse. Cancer Res. 1992;52:24132418
[Abstract/Free Full Text] - Rasmussen H, Barrett PQ. Calcium messenger system: an integrated view. Physiol Rev. 1984;64:938984
[Free Full Text] - Lichtlen PR, Hugenholtz PG, Rafflenbeul W, Hecker H, Jost S, Deckers JW. Retardation of angiographic progression of coronary artery disease by nifedipine. Results of the International Nifedipine Trial on Antiatherosclerotic Therapy (INTACT). Lancet. 1990;335:11091113[CrossRef][Web of Science][Medline]
- Reddy MK, Baskaran K, Molteni A. Inhibitors of angiotensin-converting enzyme modulate mitosis and gene expression in pancreatic cancer cells. Proc Soc Exp Biol Med. 1995;210:221226[CrossRef][Medline]
- Small W Jr, Molteni A, Kim YT, Taylor JM, Chen Z, Ward WF. Captopril modulates hormone receptor concentration and inhibits proliferation of human mammary ductal carcinoma cells in culture. Breast Cancer Res Treat. 1997;44:217224[CrossRef][Web of Science][Medline]
- Chen L, Re RN, Prakash O, Mondal D. Angiotensin-converting enzyme inhibition reduces neuroblastoma cell growth rate. Proc Soc Exp Biol Med. 1991;196:280283[CrossRef][Medline]
- Ward WF, Molteni A, Ts'ao C, Hinz JM. The effect of Captopril on benign and malignant reactions in irradiated rat skin. Br J Radiol. 1990;63:349354
[Abstract/Free Full Text] - Ward WF, Molteni A, Kim YT, Ts'ao CH, Taylor JM. Captopril inhibits mitosis and growth of diethylnitrosamine-induced preneoplastic hepatic foci in F344 rats. FASEB J. 1992;5:A
- Bastiaens MT, Zwan NV, Verschueren GL, Stoof TJ, Nieboer C. Three cases of pemphigus vegetans: induction by enalaprilassociation with internal malignancy. Int J Dermatol. 1994;33:168171[Web of Science][Medline]
- Larbre JP, Nicolas JF, Collet P, Larbre B, Llorca G. Kaposi's sarcoma in a patient with rheumatoid arthritis possible responsibility of captopril in the development of lesions. J Rheumatol. 1991;18:476477[Web of Science][Medline]
- Furness PN, Goodfield MJ, MacLennan KA, Stevens A, Millard LG. Severe cutaneous reactions to captopril and enalapril; histological study and comparison with early mycosis fungoides. J Clin Pathol. 1986;39:902907
[Abstract/Free Full Text] - Puppin D Jr, Rybojad M, de la Chapelle C, Morel P. Kaposi's sarcoma associated with captopril [letter]. Lancet. 1990;336:12511252[Web of Science][Medline]
- Carroll J, Thaler M, Grossman E, Alder A, Trau H, Rosenthal T. Generalized pustular eruption associated with converting enzyme inhibitor therapy. Cutis. 1995;56:276278[Web of Science][Medline]
This article has been cited by other articles:
![]() |
V. W. Setiawan, D. O. Stram, A. M. Y. Nomura, L. N. Kolonel, and B. E. Henderson Risk Factors for Renal Cell Cancer: The Multiethnic Cohort Am. J. Epidemiol., October 15, 2007; 166(8): 932 - 940. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. Ansary-Moghaddam, R. Huxley, F. Barzi, C. Lawes, T. Ohkubo, X. Fang, S. H. Jee, M. Woodward, and Asia Pacific Cohort Studies Collaboration The Effect of Modifiable Risk Factors on Pancreatic Cancer Mortality in Populations of the Asia-Pacific Region Cancer Epidemiol. Biomarkers Prev., December 1, 2006; 15(12): 2435 - 2440. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. Rocken, U. Lendeckel, J. Dierkes, S. Westphal, S. Carl-McGrath, B. Peters, S. Kruger, P. Malfertheiner, A. Roessner, and M. P.A. Ebert The Number of Lymph Node Metastases in Gastric Cancer Correlates with the Angiotensin I-Converting Enzyme Gene Insertion/Deletion Polymorphism Clin. Cancer Res., April 1, 2005; 11(7): 2526 - 2530. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. P. W. A. Houben, W. J. Louwman, C. C. Tijssen, J. L. J. M. Teepen, C. M. van Duijn, and J. W. W. Coebergh Hypertension as a risk factor for glioma? Evidence from a population-based study of comorbidity in glioma patients Ann. Onc., August 1, 2004; 15(8): 1256 - 1260. [Abstract] [Full Text] [PDF] |
||||
![]() |
I. Goldenberg, M. Shechter, S. Matetzky, M. Jonas, M. Adam, H. Pres, D. Elian, O. Agranat, E. Schwammenthal, and V. Guetta Oral acetylcysteine as an adjunct to saline hydration for the prevention of contrast-induced nephropathy following coronary angiography: A randomized controlled trial and review of the current literature Eur. Heart J., February 1, 2004; 25(3): 212 - 218. [Abstract] [Full Text] [PDF] |
||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||




