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Diss. (sammanfattning) Umeå : Univ., 2003. / Härtill 4 uppsatser.

A dieta Mediterrânea (DM) tem sido amplamente estudada do ponto de vista epidemiológico porém, o efeito pleno específico da DM, bem como os mecanismos pelos quais esse padrão dietético contribui para redução do risco cardiovascular em prevenção secundária, são desconhecidos. Isso ocorre, em parte, devido à dificuldade de aderência observada em ensaios clínicos de intervenção dietética, especialmente estudos comparativos com dietas hipolipemiantes, por exemplo, a dieta TLC, Therapeutic Lifestyle Changes Diet (TLCD) do National Cholesterol Education Program-ATPIII. Assim, realizamos um estudo clínico, controlado, não randomizado, comparando o perfil de risco cardiovascular de dieta Mediterrânea (DM) versus dieta TLC (DTLC) em 40 pacientes com doença arterial coronariana, homogeneamente selecionados (45-65 anos de idade, homens, que tiveram ao menos um evento coronariano nos 2 últimos anos) e intensamente medicados. Uma questão paralela foi entender os efeitos de ambas as dietas nos processos de inflamação, disfunção endotelial e do estresse oxidativo, fatores-chave na aterogênese e particularmente importantes na prevenção secundária. Os hábitos culturais e dietéticos foram relevantes para alocação dos pacientes nos grupos de dieta Mediterrânea (n = 21; dieta rica em grãos integrais, vegetais, frutas, oleaginosas 10 g/dia, azeite de oliva extra-virgem 30 g/dia e vinho tinto 250 ml/dia) ou dieta TLC (n = 19; suplementada com fitosteróis 2g/dia através de creme vegetal 20 g/dia). Escores de aderência validados na literatura e específicos às dietas mostraram resultado > 90% no índice de aderência aos dois padrões dietéticos. Alguns efeitos foram comuns à dieta Mediterrânea e à dieta TLC. Com ambas, houve redução significativa de peso, índice de massa corporal (kg/m²), variáveis de composição corporal e pressão arterial. Além disso, ambas as dietas promoveram redução dos níveis plasmáticos de ADMA e da relação L-arginina/ADMA. A reatividade da artéria braquial dependente do endotélio permaneceu inalterada em ambos os grupos; no entanto, pacientes sob DM e sob DTLC melhoraram a velocidade de fluxo no momento basal (pré-hiperemia vascular). Outros efeitos foram específicos a cada padrão dietético. Com a DM, foram observados diminuição na contagem total de leucócitos versus DTLC (p =0.025) e aumento nos níveis de HDL-colesterol em 3 mg/dL (p = 0.053) versus DTLC, que mantiveram níveis de HDL-C inalterados. O diâmetro basal da artéria braquial aumentou com a DM, mas não com a DTLC. Com a DTLC, houve redução estatisticamente significante versus DM nas variáveis lipídicas colesterol total, LDL-colesterol (p < 0.05) e LDL oxidada (p = 0.009), embora a razão LDL oxidada/LDL total não tenha se alterado. Níveis séricos/plasmáticos de apolipoproteína A-1, lipoproteína(a), glicose, mieloperoxidase, sICAM, sVCAM, e as razões glutationa reduzida/oxidada em plasma e eritrócitos não se alteraram em ambos os grupos. Em conjunto, estes dados indicam um perfil de efeitos da DM e DTLC compatíveis com redução do risco cardiovascular, mesmo em pacientes intensamente medicados, em prevenção secundária. Embora estes efeitos tenham sido equivalentes entre DM e DTLC, eles parecem ser mediados tanto por alguns mecanismos comuns, como alguns mecanismos específicos de cada dieta / The Mediterranean Diet (MD) has been widely studied with respect to epidemiology, but mechanisms whereby the Mediterranean Diet (MD) is cardioprotective are unclear. This is partly because of the difficulties of adherence in clinical trials of dietary intervention, particularly trials comparing it to traditional lipid-restraining diets, e.g., Therapeutic Lifestyle Changes Diet (TLCD) from National Cholesterol Education Program ATPIII. We performed a controlled, non-randomized clinical trial comparing the cardiovascular risk profile of the Mediterranean Diet (MD) versus the TLC Diet (TLCD) in 40 selected, highly-homogeneous, and intensively medicated patients with coronary heart disease (45-65 years, males, at least one coronary event over prior 2 years). In addition, we sought to investigate both diets effects on inflammation, endothelial dysfunction and oxidative stress, all key factors in atherogenesis and particularly important in secondary prevention. Dietary/cultural habits were the basis to allocate patients for 3 months to either MD (n = 21; rich in whole grains, vegetables, fruits, nuts 10g/day, extra-virgin olive oil 30g/day, red wine 250ml/day) or TLCD (n = 19; plus phytosterols 2g/day). Specific scores showed that both diets had >90% adherence. Some effects were common to both diets. Patients in both groups showed a significant reduction in weight, body mass index, body composition and blood pressure. Also, both groups presented a reduction in plasma levels of ADMA and L-arginine/ADMA ratio. Endothelial-dependent brachial artery reactivity remained unaltered in both groups. However, patients under MD and TLCD improved flow velocity at baseline (prior to hyperemia). Nevertheless, other effects were specific to each diet. With MD, there was significant decrease in leukocyte count vs. TLCD (p = 0.03) and average increase in HDL-cholesterol by 3 mg/dL (p = 0.053) versus TLCD. The brachial arterials basal diameter increased with MD but not with TLCD. However, with TLCD there was a statistically significant reduction of lipid variables: total cholesterol, LDL-cholesterol (p < 0.05) and oxidized LDL (p = 0.009) vs. MD even though the ratio of oxidized / total LDL remained unaltered. Plasma and serum levels of apolipoprotein A-1, lipoprotein(a), glucose, myeloperoxidase, sICAM, sVCAM, and glutathione reduced/oxidized ratio in plasma and erithrocytes also remained unaltered in both groups. Together, these results demonstrate a pattern of effects of MD and TLCD compatible with cardiovascular risk reduction, in secondary prevention, even in intensely medicated patients. Although these effects were equivalent between MD and TLCD, they seem to be mediated by some common mechanisms, as well as by each diets specific mechanisms

<p>Uvod: Kardiovaskularne bolesti predstavljaju vodeći uzrok obolevanja i umiranja savremenog čoveka i vodeći su javno-zdravstveni problem u svetu i kod nas. Brojna istraživanja sugeri&scaron;u da se mediteranski način ishrane povezuje sa smanjenjem rizika za nastanak i razvoj kardiovaskularnih bolesti i drugih masovnih nezaraznih bolesti kao i smanjenjem stope ukupnog mortaliteta. Cilj istraživanja: Utvrditi stepen pridržavanja mediteranskom načinu ishrane kod obolelih od akutnog koronarnog sindroma i kod osoba sa utvrđenim rizikom za nastanak kardiovaskularnih bolesti, upotrebom validovanog skora mediteranske ishrane &ndash; MedDiet skora. Takođe, cilj istraživanja je bio da se utvrdi da li postoji značajna razlika u vrednostima biohemijskih i kliničkih faktora rizika za razvoj kardiovaskularnih bolesti između dve posmatrane grupe ispitanika, kao i da se odredi granična vrednost MedDiet skora između poželjnog i rizičnog načina ishrane za nastanak akutnog koronarnog sindroma. Metod: Istraživanje je sprovedeno kao analitička studija preseka na uzorku od 294 ispitanika (146 žena i 148 mu&scaron;karaca), starosti od 30 do 82 godine. Istraživanje je sprovedeno u vremenskom periodu od 07.02.2016. godine do 16.03.2017. godine. Prvu grupu činili su ispitanici kod kojih je&nbsp; dijagnostikovan akutni koronarni sindrom, koji su hospitalizovani u Institutu za kardiovaskularne bolesti Vojvodine u Sremskoj Kamenici, dok su drugu grupu činili ispitanici kod kojih je utvrđeno prisustvo najmanje jednog faktora rizika za nastanak kardiovaskularnih bolesti, bez klinički manifestne koronarne bolesti, koji su se javili na pregled u Savetovali&scaron;te za pravilnu ishranu, Instituta za javno zdravlje Vojvodine u Novom Sadu. Kod svih učesnika u studiji izvr&scaron;ena su: antropometrijska merenja, merenje arterijskog krvnog pritiska, odgovarajuće biohemijske analize, EKG i anketiranje upotrebom posebno pripremljenog upitnika, u čijem sastavu se nalazio i MedDiet skor &ndash; validovan skor system za procenu stepena zastupljenosti mediteranskog načina ishrane kod pojedinca. Rezultati istraživanja: Srednja vrednost MedDiet skora ispitanika bez akutnog koronarnog sindroma bila je 27,48&plusmn;6,59, dok je srednja vrednost MedDiet skora ispitanika sa akutnim koronarnim sindromom bila 20,53&plusmn;4,01. Razlika srednjih vrednosti MedDiet skora između dve grupe ispitanika bila je statistički značajna (p=0,029). Ispitivanjem prediktivnih vrednosti pojedinih varijabli utvrđeno je da su MedDiet skor i glikemija na&scaron;te odlični markeri za akutni koronarni sindrom (AUROC=0,815, p&lt;0,0005 i AUROC=0,829, p&lt;0,0005, respektivno). Rezultati istraživanja su pokazali da konzumiranje pojedinih namirnica iz kategorija definisanih MedDiet skorom (voće, povrće, živinsko meso i maslinovo ulje) može doprineti smanjenju rizika za nastanak akutnog koronarnog sindroma. Konzumiranje crvenog mesa i mesnih prerađevina povećava rizik od pojave akutnog koronarnog sindroma. Utvrđena granična vrednost MedDiet skora iznosila je 22,5. Vrednosti MedDiet skora &le;22,5 predstavljaju faktor rizika za nastanak akutnog koronarnog sindroma, dok vrednosti MedDiet skora &gt;22,5 ukazuju na smanjen rizik za nastanak akutnog koronarnog sindroma. Multivarijantnom regresionom analizom pokazano je da na pojavu akutnog koronarnog sindroma utiču sledeći faktori rizika: godine starosti 1,063 (1,270-1,819), mu&scaron;ki pol 4,071 (1,901-8,719), pu&scaron;enje 3,067 (1,322-7,114), indeks telesne mase 0,902 (0,839-0,970), sistolni pritisak 1,020 (1,003-1,037), glikemija na&scaron;te 1,520 (1,025-1,101) i MedDiet skor 0,783 (0,722-0,849). Zaključak: Akutni koronarni sindrom predstavlja značajan javno-zdravstveni problem odraslog stanovni&scaron;tva u Republici Srbiji na &scaron;ta ukazuju visoke prevalencije u populaciji. Rezultati sprovedenog istraživanja pokazuju da je i diskretnim povećanjem unosa namirnica koje predstavljaju osnovu mediteranskog načina ishrane moguće postići značajne zdravstvene koristi. Ovi rezultati mogu predstavljati okvir za razvoj lokalnog skoring sistema ishrane prikladnog za nemediteransko područje, kao i modela za procenu rizika za nastanak akutnog koronarnog sindroma u na&scaron;oj populaciji.</p> / <p>Introduction: Cardiovascular diseases are the leading cause of morbidity and mortality of a modern society and are major public health problem in our country and also worldwide. Numerous studies suggest that the Mediterranean diet is associated with a reduction in the risk of developing cardiovascular diseases and other non-communicable diseases, as well as reduction in the overall mortality rate. Aim: To determine the degree of Mediterranean diet complience in subjects with acute coronary syndrome and subjects with an established risk for developing cardiovascular diseases, using validated Mediterranean diet score - MedDiet. Also, the aim of the study was to determine whether there is a significant difference in the values of the&nbsp; biochemical and clinical risk factors for the development of cardiovascular diseases between the two observed groups of subjects, and to determine the cut-off value of the MedDiet score between the favorable and unfavorable dietaty pattern for the development of acute coronary&nbsp; syndrome. Method: The study was conducted as an analytical cross-sectional study with enrollment of 294 subjects (146 women and 148 men), 30 to 82 years of age. The research was conducted during the period from 02/07/2016 until 03/16/2017. The first group of subjects consisted of patients diagnosed with acute coronary syndrome who were hospitalized at the Institute for Cardiovascular Diseases Vojvodina in Sremska Kamenica. The second group was comprised of subjects with established at least one major risk factor for the development of cardiovascular diseases but without clinically manifest coronary artery disease, who came to the medical examination of the Counseling Center for Proper Nutrition, Institute of Public Health of Vojvodina in Novi Sad. Among all participants in the study the following examinations were conducted: anthropometric measurements, arterial blood pressure measurements, appropriate biochemical analysis, ECG and surveys using a specially prepared questionnaire, which included MedDiet score - validated score system for assessing the degree of compliance with Mediterranean dietary pattern among subjects. Results of the study: The average value of the MedDiet score among subjects without acute coronary syndrome was 27.48 &plusmn; 6.59, while the average value of MedDiet score among subjects with acute coronary syndrome was 20.53 &plusmn; 4.01. The difference in MedDiet average values between the two groups of subjects was statistically significant (p = 0.029). By examining the predictive values of individual variables, it was shown that MedDiet score and fasting blood sugar were excellent markers for acute coronary syndrome (AUROC = 0.815, p&lt;0.0005 and AUROC = 0.829, p &lt;0.0005, respectively). The results of the study showed that the consumption of certain foods in the categories defined by MedDiet score (fruits, vegetables, poultry, and olive oil) can contribute to reduction of the risk for developing acute coronary syndrome. On the other hand, consuming red meat and meat products increased the risk of acute coronary syndrome. The established cut-off value for MedDiet score was 22.5. MedDiet score &le;22.5 practicaly indicated greater risk for the development of acute coronary syndrome, while MedDiet score&gt; 22.5 indicated reduced risk for the development of acute coronary syndrome. Multivariate regression analysis showed that acute coronary syndrome is affected by the following risk factors: age 1,063 (1,270-1,819), male gender 4,071 (1,901-8,719), smoking 3,067 (1,322-7,114), body mass index 0,902 (0.839-0.970 ), systolic blood pressure 1.020 (1.003-1.037), fasting blood sugar 1.520 (1.025-1.101) and MedDiet score 0.783 (0.722- 0.849). Conclusion: Acute coronary syndrome is a major public health problem in the adult population of the Republic of Serbia, as indicated by its high prevalence. The results of the conducted research show that discrete increase in food intakes of foods which represent the basis of the Mediterranean diet, can lead to significant health benefits. These results can represent a framework for the development of a local scoring system for a non-mediterranean area, and also for creation of risk assessment model for acute coronary syndrome in our population.</p>

A dieta Mediterrânea (DM) tem sido amplamente estudada do ponto de vista epidemiológico porém, o efeito pleno específico da DM, bem como os mecanismos pelos quais esse padrão dietético contribui para redução do risco cardiovascular em prevenção secundária, são desconhecidos. Isso ocorre, em parte, devido à dificuldade de aderência observada em ensaios clínicos de intervenção dietética, especialmente estudos comparativos com dietas hipolipemiantes, por exemplo, a dieta TLC, Therapeutic Lifestyle Changes Diet (TLCD) do National Cholesterol Education Program-ATPIII. Assim, realizamos um estudo clínico, controlado, não randomizado, comparando o perfil de risco cardiovascular de dieta Mediterrânea (DM) versus dieta TLC (DTLC) em 40 pacientes com doença arterial coronariana, homogeneamente selecionados (45-65 anos de idade, homens, que tiveram ao menos um evento coronariano nos 2 últimos anos) e intensamente medicados. Uma questão paralela foi entender os efeitos de ambas as dietas nos processos de inflamação, disfunção endotelial e do estresse oxidativo, fatores-chave na aterogênese e particularmente importantes na prevenção secundária. Os hábitos culturais e dietéticos foram relevantes para alocação dos pacientes nos grupos de dieta Mediterrânea (n = 21; dieta rica em grãos integrais, vegetais, frutas, oleaginosas 10 g/dia, azeite de oliva extra-virgem 30 g/dia e vinho tinto 250 ml/dia) ou dieta TLC (n = 19; suplementada com fitosteróis 2g/dia através de creme vegetal 20 g/dia). Escores de aderência validados na literatura e específicos às dietas mostraram resultado > 90% no índice de aderência aos dois padrões dietéticos. Alguns efeitos foram comuns à dieta Mediterrânea e à dieta TLC. Com ambas, houve redução significativa de peso, índice de massa corporal (kg/m²), variáveis de composição corporal e pressão arterial. Além disso, ambas as dietas promoveram redução dos níveis plasmáticos de ADMA e da relação L-arginina/ADMA. A reatividade da artéria braquial dependente do endotélio permaneceu inalterada em ambos os grupos; no entanto, pacientes sob DM e sob DTLC melhoraram a velocidade de fluxo no momento basal (pré-hiperemia vascular). Outros efeitos foram específicos a cada padrão dietético. Com a DM, foram observados diminuição na contagem total de leucócitos versus DTLC (p =0.025) e aumento nos níveis de HDL-colesterol em 3 mg/dL (p = 0.053) versus DTLC, que mantiveram níveis de HDL-C inalterados. O diâmetro basal da artéria braquial aumentou com a DM, mas não com a DTLC. Com a DTLC, houve redução estatisticamente significante versus DM nas variáveis lipídicas colesterol total, LDL-colesterol (p < 0.05) e LDL oxidada (p = 0.009), embora a razão LDL oxidada/LDL total não tenha se alterado. Níveis séricos/plasmáticos de apolipoproteína A-1, lipoproteína(a), glicose, mieloperoxidase, sICAM, sVCAM, e as razões glutationa reduzida/oxidada em plasma e eritrócitos não se alteraram em ambos os grupos. Em conjunto, estes dados indicam um perfil de efeitos da DM e DTLC compatíveis com redução do risco cardiovascular, mesmo em pacientes intensamente medicados, em prevenção secundária. Embora estes efeitos tenham sido equivalentes entre DM e DTLC, eles parecem ser mediados tanto por alguns mecanismos comuns, como alguns mecanismos específicos de cada dieta / The Mediterranean Diet (MD) has been widely studied with respect to epidemiology, but mechanisms whereby the Mediterranean Diet (MD) is cardioprotective are unclear. This is partly because of the difficulties of adherence in clinical trials of dietary intervention, particularly trials comparing it to traditional lipid-restraining diets, e.g., Therapeutic Lifestyle Changes Diet (TLCD) from National Cholesterol Education Program ATPIII. We performed a controlled, non-randomized clinical trial comparing the cardiovascular risk profile of the Mediterranean Diet (MD) versus the TLC Diet (TLCD) in 40 selected, highly-homogeneous, and intensively medicated patients with coronary heart disease (45-65 years, males, at least one coronary event over prior 2 years). In addition, we sought to investigate both diets effects on inflammation, endothelial dysfunction and oxidative stress, all key factors in atherogenesis and particularly important in secondary prevention. Dietary/cultural habits were the basis to allocate patients for 3 months to either MD (n = 21; rich in whole grains, vegetables, fruits, nuts 10g/day, extra-virgin olive oil 30g/day, red wine 250ml/day) or TLCD (n = 19; plus phytosterols 2g/day). Specific scores showed that both diets had >90% adherence. Some effects were common to both diets. Patients in both groups showed a significant reduction in weight, body mass index, body composition and blood pressure. Also, both groups presented a reduction in plasma levels of ADMA and L-arginine/ADMA ratio. Endothelial-dependent brachial artery reactivity remained unaltered in both groups. However, patients under MD and TLCD improved flow velocity at baseline (prior to hyperemia). Nevertheless, other effects were specific to each diet. With MD, there was significant decrease in leukocyte count vs. TLCD (p = 0.03) and average increase in HDL-cholesterol by 3 mg/dL (p = 0.053) versus TLCD. The brachial arterials basal diameter increased with MD but not with TLCD. However, with TLCD there was a statistically significant reduction of lipid variables: total cholesterol, LDL-cholesterol (p < 0.05) and oxidized LDL (p = 0.009) vs. MD even though the ratio of oxidized / total LDL remained unaltered. Plasma and serum levels of apolipoprotein A-1, lipoprotein(a), glucose, myeloperoxidase, sICAM, sVCAM, and glutathione reduced/oxidized ratio in plasma and erithrocytes also remained unaltered in both groups. Together, these results demonstrate a pattern of effects of MD and TLCD compatible with cardiovascular risk reduction, in secondary prevention, even in intensely medicated patients. Although these effects were equivalent between MD and TLCD, they seem to be mediated by some common mechanisms, as well as by each diets specific mechanisms