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Bekar C, Goktas Z. Validation of the 14-item mediterranean diet adherence screener. Clin Nutr ESPEN 2023; 53:238-243. [PMID: 36657918 DOI: 10.1016/j.clnesp.2022.12.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 12/05/2022] [Accepted: 12/21/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND The Mediterranean diet (MedDiet) is suggested as a healthy dietary pattern. 14-point Mediterranean Diet Adherence Screener (MEDAS) questionnaire is a valid and rapid tool to estimate the adherence to the Mediterranean diet. The aim of this study was to assess the validity of the 14-point Mediterranean Diet Adherence Screener in Turkish population. METHODS A total of 188 people (%58 females) participated in this study (31.7 ± 10.97 years). Turkish version of the MEDAS questionnaire was applied with 3-day food record, and mean total Mediterranean Diet (MedDiet) score and each of the MedDiet component scores was calculated from both 3-day food records and MEDAS tool. Intra-class correlation coefficient (ICC) was used to evaluate the total score agreement between the two dietary assessment methods, and each of the MedDiet components was estimated using Cohen's kappa. This project was a cross-sectional study. RESULTS There was good correlation between the food record total MEdDiet score and MEDAS-derived MedDiet score (r = 0.750, p < 0.001; ICC = 0.749, 95% CI 0.679-0.806, p < 0.001). Highest concordance was observed for olive oil for cooking (К = 0.763), sugar sweetened beverages (К = 0.666), sweets, pastries (К = 0.753), and sofrito (К = 0.796) while the lowest was for fish and seafood (К = 0.196). Re-test analysis showed a similar mean total MedDiet score for both administrations of MEDAS. CONCLUSIONS The MEDAS is a valid and reliable tool to assess adherence to the Mediterranean diet in Turkish population.
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Affiliation(s)
- Cansu Bekar
- Nutrition and Dietetics Department, Faculty of Health Sciences, Hacettepe University, Ankara, Turkey
| | - Zeynep Goktas
- Nutrition and Dietetics Department, Faculty of Health Sciences, Hacettepe University, Ankara, Turkey.
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Goktas Z, Zu Y, Abbasi M, Galyean S, Wu D, Fan Z, Wang S. Recent Advances in Nanoencapsulation of Phytochemicals to Combat Obesity and Its Comorbidities. J Agric Food Chem 2020; 68:8119-8131. [PMID: 32633507 PMCID: PMC8507418 DOI: 10.1021/acs.jafc.0c00131] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
An increasing epidemic of obesity has become a serious public health concern primarily because it contributes to pathogenesis of many chronic diseases including type 2 diabetes, cardiovascular disease, hepatobiliary disease, obstructive sleep apnea, kidney disease, some types of cancer, among others. Consumption of a variety of phytochemicals has emerged as a promising potential for combating obesity and its comorbidities. However, the generally low aqueous solubility, stability, bioavailability, and target specificity of phytochemicals, along with their side-effects and toxicity seen when used at high doses, have restricted their clinical applications. As a solution, phytochemicals can be encapsulated into nanoparticles to increase their stability and solubility, enhance their bioavailability, protect them from premature degradation in the body, prolong their circulation time, and thus enhance their antiobesity activity. In this perspective, we summarize the problems and limitations of the prominent phytochemicals (epigallocatechin gallate, trans-resveratrol, curcumin, and quercetin), the major biocompatible and biodegradable nanoparticles, and the efficacy of nanoencapsulated forms of these phytochemicals in combating obesity and its comorbidities.
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Affiliation(s)
- Zeynep Goktas
- Faculty of Health Sciences, Department of Nutrition and Dietetics, Hacettepe University, 06100 Ankara, Turkey
| | - Yujiao Zu
- Department of Nutritional Sciences, Texas Tech University, Lubbock, Texas 79409, United States
| | - Mehrnaz Abbasi
- Department of Nutritional Sciences, Texas Tech University, Lubbock, Texas 79409, United States
| | - Shannon Galyean
- Department of Nutritional Sciences, Texas Tech University, Lubbock, Texas 79409, United States
| | - Dayong Wu
- Nutrition Immunology Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts 02111, United States
| | - Zhaoyang Fan
- Department of Electrical & Computer Engineering and Nano Tech Center, Texas Tech University, Lubbock, Texas 79409, United States
| | - Shu Wang
- Department of Nutritional Sciences, Texas Tech University, Lubbock, Texas 79409, United States
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Goktas Z, Khan MSH, Zu Y, Hao L, Wang S. Body Composition Changes in Female APOE*3Leiden.CETP Transgenic Mice After 5-week Injection of Resveratrol-encapsulated Liposomes to Inguinal White Adipose Tissue (P21-041-19). Curr Dev Nutr 2019. [DOI: 10.1093/cdn/nzz041.p21-041-19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Objectives
Many cell culture and animal studies have demonstrated that Trans-resveratrol (R) has the potential to induce beige cell formation and activity. Although human studies indicate that R can maintain metabolic health, evidence is inconclusive regarding its browning effectiveness mainly due to its low aqueous solubility and high hepatic metabolism in humans. To combat the shortcomings of R, we have successfully synthesized biocompatible and biodegradable R-encapsulated liposomes (Rlipo). We will directly inject Rlipo into inguinal white adipose tissue (iWAT) in this project. The purpose of this study to evaluate the anti-obesity effects of resveratrol-encapsulated liposomes in female APOE*3Leiden.CETP transgenic mice, which have human-like lipoprotein metabolism.
Methods
Rlipo was prepared using R and soy phosphatidylcholine (soy-PC) dissolved in ethanol. After mixing and drying with nitrogen, deionized water was added followed by a sonication step. Ultrafiltration was used to remove any unencapsulated R. The void liposomes (Vlipo) were prepared using only soy-PC.
Female APOE*3Leiden.CETP mice (n = 40) were fed with a high fat diet (45% of calorie from fat) throughout the study. After 4 weeks of the high-fat diet administration, mice were randomly divided into 4 groups (n = 10) and received iWAT injections of Rlipo, Vlipo, free R and saline (control) once per week for 5 weeks. R concentration was 17.5 mg/kg body weight/week. Body weight and food intake were measured weekly. Body composition of mice was measured using an EchoMRITM every other week. Paired sample t-test and One-way ANOVA were used to analyze differences between means.
Results
After 5-weeks of treatment compared to baseline, fat percentage differences were 1.99 ± 0.93%, 1.85 ± 0.58%, 1.45 ± 0.67%, and 1.40 ± 0.68% in control, free R, Vlipo and Rlipo groups, respectively. Body weight and fat mass showed a similar trend of change. Although control group showed an increase in lean mass (0.25 ± 0.95 g), RLipo group showed a decrease (−0.14 ± 0.52 g). Food intake was similar among four groups.
Conclusions
Nanoencapsulation of R can enhance R's anti-obesity effects. However longer treatment time might be necessary to see more prominent results.
Funding Sources
NIH/NCCIH (Grant R15AT008733).
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Balcı T, Goktas Z. Nutritional status of vegans and vegetarians in Turkish population. Clin Nutr 2018. [DOI: 10.1016/j.clnu.2018.06.1897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Erdem N, Goktas Z. Effects of reduced saturated fatty acid diet on biochemical and inflammatory markers in patients with non-alcoholic fatty liver disease (NAFLD). Clin Nutr 2018. [DOI: 10.1016/j.clnu.2018.06.1684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Ucar K, Kahramanoglu Aksoy E, Goktas Z. Caffeine consumption and biochemical parameters in non-alcoholic fatty liver disease. Clin Nutr 2018. [DOI: 10.1016/j.clnu.2018.06.1287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Alpaslan A, Goktas Z. Effects of month long ramadan fasting on anthropometric measurements and nutritional intake in healthy male subjects. Clin Nutr 2018. [DOI: 10.1016/j.clnu.2018.06.1479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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İlhan M, Kahramanoğlu Aksoy E, Goktas Z. Correlations between serum FGF21 and IRISIN levels and nutritional, biochemical, and anthropometric parameters in non-alcoholic fatty liver disease. Clin Nutr 2018. [DOI: 10.1016/j.clnu.2018.06.1757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Dikmen D, Goktas Z, Rakıcıoğlu N. Association Between Neck Circumference and Other Central Adiposity Predictors. J Acad Nutr Diet 2018. [DOI: 10.1016/j.jand.2018.06.279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Erdem N, Goktas Z. MON-P070: Effects of Reduced Saturated Fatty Acid on Body Composition in Patients with Non-Alcoholic Fatty Liver Disease (NAFLD). Clin Nutr 2017. [DOI: 10.1016/s0261-5614(17)31013-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ors E, Goktas Z. SUN-P243: Herbal Supplement Use for Weight Loss Among Women Aged Between 19 and 64 Years. Clin Nutr 2017. [DOI: 10.1016/s0261-5614(17)30386-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bilici S, Saglam F, Beyhan Y, Barut-Uyar B, Dikmen D, Goktas Z, Attar AJ, Mucka P, Uyar MF. Energy expenditure and nutritional status of coal miners: A cross-sectional study. Arch Environ Occup Health 2016; 71:293-299. [PMID: 26394928 DOI: 10.1080/19338244.2015.1095152] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 09/13/2015] [Indexed: 06/05/2023]
Abstract
The objectives of this study were to assess the nutritional status, daily energy intake, and daily energy expenditure of coal miners in Turkey. A total of 135 healthy coal miners (aged 19-64 years) were evaluated. Heart rates were measured using Polar watches, and the total energy expenditure was calculated using physical activity level formula and Hiilloskorpi equation. The average body mass index of the participants was 25.7 ± 3.98 kg/m2, and the average energy intake was 3,973.7 ± 420.85 kcal. According to Dietary Reference Intakes, the energy and nutrient intakes of the miners were adequate, except for the intake of vitamin D. The coal miners were found to be at moderate (43.0%), heavy (41.5%), and very heavy (13.3%) activity levels. Calculations of the energy expenditure at work were found to be 2,189.8 ± 376.19 to 2,788.8 ± 359.89 kcal per day. Further studies have to be conducted for developing national standards for each occupation.
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Affiliation(s)
- Saniye Bilici
- a Nutrition and Dietetics, Faculty of Health Sciences, Besevler, Gazi University , Ankara , Turkey
| | - Fatma Saglam
- b Department of Nutrition and Dietetics , Faculty of Health Sciences, Hacettepe University , Sihhiye , Ankara , Turkey
| | - Yasemin Beyhan
- c Nutrition and Dietetics, Faculty of Health Sciences, Halic University , Istanbul , Turkey
| | - Banugul Barut-Uyar
- a Nutrition and Dietetics, Faculty of Health Sciences, Besevler, Gazi University , Ankara , Turkey
- e Boston Children's Hospital, Harvard University Medical School, Endocrinology , Boston , Massachusetts , USA
| | - Derya Dikmen
- b Department of Nutrition and Dietetics , Faculty of Health Sciences, Hacettepe University , Sihhiye , Ankara , Turkey
| | - Zeynep Goktas
- b Department of Nutrition and Dietetics , Faculty of Health Sciences, Hacettepe University , Sihhiye , Ankara , Turkey
| | - A James Attar
- d Chemical Engineering, North Carolina State University (Retired) , Raleigh , North Carolina , USA
| | - Patrick Mucka
- e Boston Children's Hospital, Harvard University Medical School, Endocrinology , Boston , Massachusetts , USA
| | - M Fatih Uyar
- b Department of Nutrition and Dietetics , Faculty of Health Sciences, Hacettepe University , Sihhiye , Ankara , Turkey
- e Boston Children's Hospital, Harvard University Medical School, Endocrinology , Boston , Massachusetts , USA
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Wang S, Miller B, Matthan NR, Goktas Z, Wu D, Reed DB, Yin X, Grammas P, Moustaid-Moussa N, Shen CL, Lichtenstein AH. Aortic cholesterol accumulation correlates with systemic inflammation but not hepatic and gonadal adipose tissue inflammation in low-density lipoprotein receptor null mice. Nutr Res 2014; 33:1072-82. [PMID: 24267047 DOI: 10.1016/j.nutres.2013.09.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 08/31/2013] [Accepted: 09/11/2013] [Indexed: 12/15/2022]
Abstract
Inflammation is a major contributor to the development of atherosclerotic plaque, yet the involvement of liver and visceral adipose tissue inflammatory status in atherosclerotic lesion development has yet to be fully elucidated. We hypothesized that an atherogenic diet would increase inflammatory response and lipid accumulation in the liver and gonadal adipose tissue (GAT) and would correlate with systemic inflammation and aortic lesion formation in low-density lipoprotein (LDL) receptor null (LDLr-/-) mice. For 32 weeks, LDLr-/- mice (n = 10/group) were fed either an atherogenic (high saturated fat and cholesterol) or control (low fat and cholesterol) diet. Hepatic and GAT lipid content and expression of inflammatory factors were measured using standard procedures. Compared with the control diet, the atherogenic diet significantly increased hepatic triglyceride and total cholesterol (TC), primarily esterified cholesterol, and GAT triglyceride content. These changes were accompanied by increased expression of acyl-CoA synthetase long-chain family member 5, CD36, ATP-binding cassette, subfamily A, member 1 and scavenger receptor B class 1, and they decreased the expression of cytochrome P450, family 7 and subfamily a, polypeptide 1 in GAT. Aortic TC content was positively associated with hepatic TC, triglyceride, and GAT triglyceride contents as well as plasma interleukin 6 and monocyte chemoattractant protein-1 concentrations. Although when compared with the control diet, the atherogenic diet increased hepatic tumor necrosis factor α production, they were not associated with aortic TC content. These data suggest that the LDLr-/- mice responded to the atherogenic diet by increasing lipid accumulation in the liver and GAT, which may have increased inflammatory response. Aortic TC content was positively associated with systemic inflammation but not hepatic and GAT inflammatory status.
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Affiliation(s)
- Shu Wang
- Nutritional Sciences Program, Texas Tech University, Lubbock, TX, USA.
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Goktas Z, Wang S, Besler T. Associations between tissue retinol binding protein‐4, visfatin and vaspin protein concentrations and blood triglyceride and cholesterol levels in morbidly obese subjects (133.3). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.133.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zeynep Goktas
- Department of Nutrition Texas Tech UniversityLubbockTXUnited States
| | - Shu Wang
- Department of Nutrition Texas Tech UniversityLubbockTXUnited States
| | - Tanju Besler
- Nutrition and Dietetics Hacettepe UniversityAnkaraTurkey
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Stevenson JL, Krishnan S, Stoner MA, Goktas Z, Cooper JA. Effects of exercise during the holiday season on changes in body weight, body composition and blood pressure. Eur J Clin Nutr 2013; 67:944-9. [DOI: 10.1038/ejcn.2013.98] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 04/08/2013] [Accepted: 04/11/2013] [Indexed: 11/09/2022]
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Goktas Z, Wang S. Visfatin and vaspin protein concentrations in different tissues and insulin resistance. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.865.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zeynep Goktas
- Department of NutritionTexas Tech UniversityLubbockTX
| | - Shu Wang
- Department of NutritionTexas Tech UniversityLubbockTX
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Goktas Z, Moustaid-Moussa N, Shen CL, Boylan M, Mo H, Wang S. Effects of bariatric surgery on adipokine-induced inflammation and insulin resistance. Front Endocrinol (Lausanne) 2013; 4:69. [PMID: 23772224 PMCID: PMC3677351 DOI: 10.3389/fendo.2013.00069] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Accepted: 05/23/2013] [Indexed: 12/31/2022] Open
Abstract
Over a third of the US population is obese and at high risk for developing type 2 diabetes, insulin resistance, and other metabolic disorders. Obesity is considered a chronic low-grade inflammatory condition that is primarily attributed to expansion and inflammation of adipose tissues. Indeed, adipocytes produce and secrete numerous proinflammatory and anti-inflammatory cytokines known as adipokines. When the balance of these adipokines is shifted toward higher production of proinflammatory factors, local inflammation within adipose tissues and subsequently systemic inflammation occur. These adipokines including leptin, visfatin, resistin, apelin, vaspin, and retinol binding protein-4 can regulate inflammatory responses and contribute to the pathogenesis of diabetes. These effects are mediated by key inflammatory signaling molecules including activated serine kinases such as c-Jun N-terminal kinase and serine kinases inhibitor κB kinase and insulin signaling molecules including insulin receptor substrates, protein kinase B (PKB, also known as Akt), and nuclear factor kappa B. Bariatric surgery can decrease body weight and improve insulin resistance in morbidly obese subjects. However, despite reports suggesting reduced inflammation and weight-independent effects of bariatric surgery on glucose metabolism, mechanisms behind such improvements are not yet well understood. This review article focuses on some of these novel adipokines and discusses their changes after bariatric surgery and their relationship to insulin resistance, fat mass, inflammation, and glucose homeostasis.
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Affiliation(s)
- Zeynep Goktas
- Nutritional Sciences Program, College of Human Science, Texas Tech University, Lubbock, TX, USA
| | - Naima Moustaid-Moussa
- Nutritional Sciences Program, College of Human Science, Texas Tech University, Lubbock, TX, USA
| | - Chwan-Li Shen
- Department of Pathology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Mallory Boylan
- Nutritional Sciences Program, College of Human Science, Texas Tech University, Lubbock, TX, USA
| | - Huanbiao Mo
- Department of Nutrition and Food Sciences, Texas Woman’s University, Denton, TX, USA
| | - Shu Wang
- Nutritional Sciences Program, College of Human Science, Texas Tech University, Lubbock, TX, USA
- *Correspondence: Shu Wang, Nutritional Science Program, College of Human Science, Texas Tech University, P.O. Box: 41240, Lubbock, TX 79409-1240, USA e-mail:
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Goktas Z, Wang S. Visfatin and RBP4 gene expression levels in different adipose tissues and insulin resistance. BMC Proc 2012. [PMCID: PMC3374217 DOI: 10.1186/1753-6561-6-s3-p17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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