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Targeting lipoxygenases with care. de Souza PM, Newson J, Gilroy DW. Chem Biol. 2006 Nov;13(11):1121-2. PMID: 17113992 doi:10.1016/j.chembiol.2006.11.002  

A plethora of research documents the role of chronic inflammatory mediators such as 5-lipooxygenase (5-LOX) and tumor necrosis factor-alpha (TNF-α) in the manifestation and progression of prostate and other cancers.7-19,30,31,33,49,52-54,87,88 The typical American diet is high in omega-6 fatty acids, saturated fats, and arachidonic acid. Over-consumption of these foods, and under-consumption of omega-3 fatty acids, contribute significantly to systemic chronic inflammatory states. Boswellia extracts have been thoroughly studied as natural remedies for inflammatory disorders. A patented extract from boswellia called 5-LOXIN® has potent ability to inhibit the enzyme 5-LOX, preventing the formation of protein-degrading enzymes, and protecting against inflammation-induced events that can promote tumor angiogenesis.

Prostate tumor growth and recurrence can be modulated by the omega-6:omega-3 ratio in diet: athymic mouse xenograft model simulating radical prostatectomy. Kelavkar UP, Hutzley J, Dhir R, Kim P, Allen KG, McHugh K. Neoplasia. 2006 Feb;8(2):112-24. PMID: 16611404

Controlling the resolution of acute inflammation: a new genus of dual anti-inflammatory and proresolving mediators. Serhan CN. J Periodontol. 2008 Aug;79(8 Suppl):1520-6. Review. PMID: 18673006 doi:10.1902/jop.2008.080231

Egg consumption, serum cholesterol, and cause-specific and all-cause mortality: the National Integrated Project for Prospective Observation of Non-communicable Disease and Its Trends in the Aged, 1980 (NIPPON DATA80). Nakamura Y, Okamura T, Tamaki S, Kadowaki T, Hayakawa T, Kita Y, Okayama A, Ueshima H; NIPPON DATA80 Research Group. Am J Clin Nutr. 2004 Jul;80(1):58-63. PMID: 15213028 In men, egg consumption was not related to age-adjusted total cholesterol. Cox analysis found that, in women, all-cause mortality in the 1-2-eggs/wk group was significantly lower than that in the 1-egg/d group, whereas no such relations were noted in men. CONCLUSION: Limiting egg consumption may have some health benefits, at least in women in geographic areas where egg consumption makes a relatively large contribution to total dietary cholesterol intake.

Thromboxane A2 (TXA2) is a thromboxane. It is generated from prostaglandin H2 by thromboxane-A synthase. It is also a major component of blood clots. Aspirin irreversibly inhibits platelet cyclooxygenase 1 preventing the formation of prostaglandin H2, and therefore thromboxane A2. TXA2 is very unstable in aqueous solution, since it is hydrolyzed within about 30 seconds to the biologically inactive thromboxane B2. Due to its very short half life, TXA2 primarily functions as an autocrine or paracrine mediator in the nearby tissues surrounding its site of production.

Fatty acid facts, part III: Cardiovascular disease, or, a fish diet is noy fishy. Pauwels EK, Kostkiewicz M. Drug News Perspect. 2008 Dec;21(10):552-61. PMID: 19221636

Neuroprotectin D1-mediated anti-inflammatory and survival signaling in stroke, retinal degenerations and Alzheimer's disease. Bazan NG. Lipid Res. 2008 Nov 18. [Epub ahead of print] PMID: 19018037

Stereochemical assignment, antiinflammatory properties, and receptor for the omega-3 lipid mediator resolvin E1. Arita M, Bianchini F, Aliberti J, Sher A, Chiang N, Hong S, Yang R, Petasis NA, Serhan CN. J Exp Med. 2005 Mar 7;201(5):713-22. PMID: 15753205 oi:10.1084/jem.20042031

March 7, 2005 Boston, MA - The anti-inflammatory effect of fish oils appears to be due to a powerful anti-inflammatory compound called resolvin (resolution-phase interaction product) E1, which is produced from eicosapentaenoic acid (EPA), Dr Makoto Arita (Brigham and Women's Hospital and Harvard Medical School, Boston, MA) and colleagues report in the March 7, 2005 issue of the Journal of Experimental Medicine [1]. Arita writes, "At nanomolar levels, resolvin E1 dramatically reduced dermal inflammation, peritonitis, dendritic cell migration, and interleukin (IL)-12 production.

Rosmarinic acid antagonizes activator protein-1-dependent activation of cyclooxygenase-2 expression in human cancer and nonmalignant cell lines. Scheckel KA, Degner SC, Romagnolo DF. J Nutr. 2008 Nov;138(11):2098-105. PMID: 18936204

Ursolic acid inhibits cyclooxygenase-2 transcription in human mammary epithelial cells. Subbaramaiah K, Michaluart P, Sporn MB, Dannenberg AJ. Cancer Res. 2000 May 1;60(9):2399-404. PMID: 10811116

Docosahexaenoic acid suppresses arachidonic acid-induced proliferation of LS-174T human colon carcinoma cells. Habbel P, Weylandt KH, Lichopoj K, Nowak J, Purschke M, Wang JD, He CW, Baumgart DC, Kang JX. World J Gastroenterol. 2009 Mar 7;15(9):1079-84. PMID: 19266600 doi: 10.3748/wjg.15.1079.

Consuming fructose-sweetened, not glucose-sweetened, beverages increases visceral adiposity and lipids and decreases insulin sensitivity in overweight/obese humans. Stanhope KL, Schwarz JM, Keim NL, Griffen SC, Bremer AA, Graham JL, Hatcher B, Cox CL, Dyachenko A, Zhang W, McGahan JP, Seibert A, Krauss RM, Chiu S, Schaefer EJ, Ai M, Otokozawa S, Nakajima K, Nakano T, Beysen C, Hellerstein MK, Berglund L, Havel PJ. J Clin Invest. 2009 May;119(5):1322-34. Epub 2009 Apr 20. PMID: 19381015 doi: 10.1172/JCI37385. Studies in animals have documented that, compared with glucose, dietary fructose induces dyslipidemia and insulin resistance. To assess the relative effects of these dietary sugars during sustained consumption in humans, overweight and obese subjects consumed glucose- or fructose-sweetened beverages providing 25% of energy requirements for 10 weeks. Although both groups exhibited similar weight gain during the intervention, visceral adipose volume was significantly increased only in subjects consuming fructose. Fasting plasma triglyceride concentrations increased by approximately 10% during 10 weeks of glucose consumption but not after fructose consumption. In contrast, hepatic de novo lipogenesis (DNL) and the 23-hour postprandial triglyceride AUC were increased specifically during fructose consumption. Similarly, markers of altered lipid metabolism and lipoprotein remodeling, including fasting apoB, LDL, small dense LDL, oxidized LDL, and postprandial concentrations of remnant-like particle-triglyceride and -cholesterol significantly increased during fructose but not glucose consumption. In addition, fasting plasma glucose and insulin levels increased and insulin sensitivity decreased in subjects consuming fructose but not in those consuming glucose. These data suggest that dietary fructose specifically increases DNL, promotes dyslipidemia, decreases insulin sensitivity, and increases visceral adiposity in overweight/obese adults.

Fish oil-derived fatty acids, docosahexaenoic acid and docosapentaenoic acid, and the risk of acute coronary events: the Kuopio ischaemic heart disease risk factor study. Rissanen T, Voutilainen S, Nyyssönen K, Lakka TA, Salonen JT. Circulation. 2000 Nov 28;102(22):2677-9. PMID: 11094031 Methods and Results-We studied this association in the Kuopio Ischaemic Heart Disease Risk Factor Study, a prospective population study in Eastern Finland. Subjects were randomly selected and included 1871 men aged 42 to 60 years who had no clinical coronary heart disease at baseline examination. A total of 194 men had a fatal or nonfatal acute coronary event during follow-up. In a Cox proportional hazards' model adjusting for other risk factors, men in the highest fifth of the proportion of serum DHA+DPA in all fatty acids had a 44% reduced risk (P=0.014) of acute coronary events compared with men in the lowest fifth. Men in the highest fifth of DHA+DPA who had a low hair content of mercury (2.0 µg/g). There was no association between proportion of eicosapentaenoic acid and the risk of acute coronary events. Conclusions-Our data provide further confirmation for the concept that fish oil-derived fatty acids reduce the risk of acute coronary events. However, a high mercury content in fish could attenuate this protective effect.

Egg consumption in relation to cardiovascular disease and mortality: the Physicians' Health Study. Djoussé L, Gaziano JM. Am J Clin Nutr. 2008 Apr;87(4):964-9. PMID: 18400720 Results: In an average follow-up of 20 y, 1550 new myocardial infarctions (MIs), 1342 incident strokes, and 5169 deaths occurred. Egg consumption was not associated with incident MI or stroke in a multivariate Cox regression. In contrast, adjusted hazard ratios (95% CI) for mortality were 1.0 (reference), 0.94 (0.87, 1.02), 1.03 (0.95, 1.11), 1.05 (0.93, 1.19), and 1.23 (1.11, 1.36) for the consumption of < 0.0001). This association was stronger among diabetic subjects, in whom the risk of death in a comparison of the highest with the lowest category of egg consumption was twofold (hazard ratio: 2.01; 95% CI: 1.26, 3.20; P for interaction = 0.09). Conclusions: Infrequent egg consumption does not seem to influence the risk of CVD in male physicians. In addition, egg consumption was positively related to mortality, more strongly so in diabetic subjects, in the study population.