Biomarkers of Cardiovascular Risk in Obese Women and their Relationship with Zinc Status

2020 ◽  
Vol 16 (5) ◽  
pp. 734-742
Author(s):  
Juliana S. Severo ◽  
Jennifer B.S. Morais ◽  
Jessica B. Beserra ◽  
Kyria J. Clímaco Cruz ◽  
Ana R.S. de Oliveira ◽  
...  
Keyword(s):  
Cardiovascular Risk ◽  
Plasma Concentrations ◽  
Emission Spectrometry ◽  
Control Group ◽  
Zinc Status ◽  
Obese Women ◽  
Dietary Zinc ◽  
Zinc Intake ◽  
Waist Hip Ratio ◽  
Zinc Concentrations

Background: Excessive adipose tissue, in the case of common obesity, has been associated with an endocrine-metabolic alteration that contributes to a manifestation of dyslipidemia. To identify mechanisms which are involved in disorders of lipid metabolism, several nutrients have been studied, especially zinc, which act by regulating transcription factors that are important for synthesis and oxidation of lipids and act as an anti-inflammatory and antioxidant nutrient. Thus, the study makes an assessment of the zinc status and biomarkers of cardiovascular risk in obese women. Methods: A case-control study enrolling obese (body mass index (BMI) ≥35 kg/m²) and eutrophic (BMI 18.5-24.9 kg/m²) Brazilian women was conducted. Dietary zinc intake was assessed by the three-day food registry. Plasma, erythrocyte and urinary zinc concentrations were determined by inductively coupled plasma optical emission spectrometry. Cardiovascular risk was assessed by plasma concentrations of lipid fractions, and by anthropometric measures. Results: Both groups showed a dietary zinc intake above the recommendations, with no statistical difference between them (p >0.05). Mean plasma and erythrocyte zinc concentrations were significantly reduced in obese women, compared to the control group (p <0.05). Urinary zinc excretion was significantly higher in obese women (p <0.05), who also had a significantly higher cardiovascular risk when compared to the control group (p <0.05). An inverse correlation between dietary zinc intake and waist-hip ratio was found in obese women. Conclusion: Obese women presented zinc redistribution characterized by reduced concentrations in plasma and erythrocytes, dietary zinc intake above the recommended, and increased zinc excretion in the urine. This study shows dyshomeostasis of zinc in obesity, a possible role in adiposity control and, consequently, its protective role against cardiovascular risk, due to its influence on risk biomarkers, such as waist-hip ratio.

No association between zinc and thyroid activity in obese women

2019 ◽  
pp. 1-8
Author(s):  
Jéssica Batista Beserra ◽  
Jennifer Beatriz Silva Morais ◽  
Juliana Soares Severo ◽  
Kyria Jayanne Clímaco Cruz ◽  
Ana Raquel Soares de Oliveira ◽  
...  
Keyword(s):  
Thyroid Hormones ◽  
Emission Spectrometry ◽  
Control Group ◽  
Case Group ◽  
Serum Concentrations ◽  
Obese Women ◽  
Dietary Zinc ◽  
Zinc Intake ◽  
Significant Difference ◽  
Zinc Concentrations

Abstract. Obesity is characterized by changes in the metabolism of zinc and thyroid hormones. Studies have also shown the role of zinc in the function and metabolism of thyroid. The present study aimed to evaluate the relationship between serum concentrations of thyroid hormones, dietary zinc intake and zinc distribution in obese women. A case-control study was conducted enrolling 98 women aged between 20 and 50 years old who were divided into case group (BMI ≥ 35 kg/m2) and control group (BMI = 18.5–24.9 kg/m2). Patients underwent anthropometric measurements and analysis of dietary zinc intake, which was performed by a three-day food record. Zinc concentrations in plasma and erythrocytes were determined by inductively coupled plasma optical emission spectrometry. Serum concentrations of thyroid hormones and antibodies were determined by chemiluminescence. Mean values of dietary zinc intake were higher than recommended (10.37 ± 3.12 mg/day and 11.37 ± 4.36 mg/day for control and obeses, respectively). Obese women had reduced plasma (67.22 ± 5.96 μg/dL) and erythrocyte (37.16 ± 3.64 μg Zn/gHb) zinc concentrations when compared to the control group (plasma: 89.71 ± 13.33 μg/dL; erythrocyte: 42.68 ± 3.73 μg Zn/gHb) (p < 0.001). Serum TSH (control: 2.62 ± 1.29 μIU/mL; obeses: 3.08 ± 1.13 μIU/mL), Free T3 (control: 2.19 ± 0.63 pg/dL; obeses: 2.09 ± 0.34 pg/dL), and Free T4 (control: 1.12 ± 0.31 ng/dL; obeses: 1.09 ± 0.19 ng/dL) concentrations were within the normal range in both groups, without significant difference between them (p > 0.05). There was no correlation between thyroid hormone concentrations and zinc parameters (p > 0.05). Although obese women presented hypozincemia, they had normal levels of thyroid hormones and no correlation was found between the studied parameters.

No Relation Between Zinc Status and Inflammatory Biomarkers in Adolescent Judokas

2020 ◽  
Vol 90 (1-2) ◽  
pp. 124-130 ◽  
Author(s):  
Artemizia Francisca de Sousa ◽  
Laiana Sepúlveda de Andrade Mesquita ◽  
Kyria Jayanne Clímaco Cruz ◽  
Ana Raquel Soares de Oliveira ◽  
Jennifer Beatriz Silva Morais ◽  
...  
Keyword(s):  
Reference Range ◽  
Plasma Concentrations ◽  
Inflammatory Biomarkers ◽  
Control Group ◽  
Zinc Status ◽  
Cross Sectional ◽  
Flame Atomic Absorption ◽  
Significant Difference ◽  
Zinc Concentrations ◽  
The Mean

Abstract. This study aimed to assess the relation between zinc status and inflammation biomarkers in adolescent judokas. This cross-sectional study included 52 male adolescents, aged between 14 and 19 years, who were subdivided into two groups: judoka group (n = 25) and control group (n = 27). Zinc intake was monitored using 3-day food records and the NutWin software version 1.5. The plasma and erythrocyte zinc concentrations were determined by flame atomic absorption spectrophotometry. Analysis of cytokines (IL-1β, IL-6, and TNF-α) was performed. The mean values of zinc concentration in the diet were found to be higher than those recommended (11.0±3.9 mg/day and 20.3±11.9 mg/day for control group and judokas, respectively) although there was no significant difference between the groups. The mean plasma concentrations of zinc were below the reference range (71.4±16.0 μg/dL and 71.9±13.8 μg/dL for control group and judokas, respectively), without a significant difference between the groups. The mean concentrations of zinc erythrocyte were within the reference range (41.2±8.6 μg/gHb and 42.6±11.3 μg/gHb for control group and judokas, respectively), without a significant difference between the groups. There was no significant difference in the inflammatory biomarkers between the judokas and controls. There was not a significant correlation between biochemical parameters of zinc and inflammation biomarkers in adolescent judokas. Regarding the data found in the study, it can be concluded that the athletes evaluated have low plasma zinc concentrations, normal erythrocyte values, and high dietary intake of zinc. Moreover, the study don’t show a relationship between zinc parameters and inflammatory markers evaluated.

The role of zinc status in altered cardiac adenylate cyclase activity in diabetic rats

1988 ◽  
Vol 119 (2) ◽  
pp. 174-180 ◽  
Author(s):  
Arshag D. Mooradian ◽  
John E. Morley ◽  
Philip J. Scarpace
Keyword(s):  
Adenylate Cyclase ◽  
Adrenergic Receptor ◽  
Diabetic Rats ◽  
Cyclase Activity ◽  
Adenylate Cyclase Activity ◽  
Zinc Status ◽  
Dietary Zinc ◽  
Zinc Intake ◽  
Diabetic State ◽  
High Zinc

Abstract. Zinc deficiency and altered myocardial adenylate cyclase activity commonly occur in diabetes. To determine whether the zinc intake of the animal can account for the altered β-adrenergic receptor activity in the diabetic heart, we determined the β-adrenergic receptor number and isoproterenol-, NaF- and forskolin-stimulated adenylate cyclase activity in diabetic and control rats maintained on low, normal and high zinc diets for 3 weeks. Scatchard analysis of [125I]iodocyanopindolol binding to control heart membrane preparations revealed a binding capacity of 17.3 ± 1.3 fmol/mg protein with a Kd of 35 ± 1.0 pmol/l. Neither the diabetic state nor the zinc status altered these binding parameters. The isoproterenol-stimulated adenylate cyclase acticity was significantly lower in diabetic rats on low zinc diets compared with controls. The NaF- (65.1 ± 5.4 vs 60.8 ± 6.4 pmol cAMP·mg protein−1·min−1) and forskolin-stimulated adenylate cyclase activities (161 ± 9.3 vs 154 ± 21.2 pmol cAMP·mg protein−1· min−1) were not significantly altered in diabetic rats. Low dietary zinc intake compared with high zinc diet significantly increased NaF- and forskolin-stimulated adenylate cyclase activity both in diabetic rats and controls. The effect of dietary zinc content on isoproterenol-stimulated adenylate cyclase was significant in control rats only. Thus zinc intake appears to be an important determinant of cardiac adenylate cyclase activity level. Additional factors peculiar to the diabetic state are involved in the modulation of β-adrenergic responsiveness of the diabetic heart.

scholarly journals Influence of duration of menopause, anthropometric and hormonal parameters on metabolic syndrome

2010 ◽  
Vol 63 (1-2) ◽  
pp. 33-39 ◽  
Author(s):  
Aleksandra Simoncig-Netjasov ◽  
Svetlana Vujovic ◽  
Miomira Ivovic ◽  
Milina Tancic-Gajic ◽  
Milka Drezgic
Keyword(s):  
Blood Pressure ◽  
Metabolic Syndrome ◽  
Diastolic Blood Pressure ◽  
Fasting Glucose ◽  
Fat Distribution ◽  
Normal Weight ◽  
Sex Hormone Binding Globulin ◽  
Control Group ◽  
Obese Women ◽  
Waist Hip Ratio

Introduction. Hypoestrogenic status in the menopausal women shows a shift to a central android fat distribution and metabolic syndrome (MS). Related metabolic changes and hypertension increase the risk for cardiovascular (CV) diseases. The aim of this study was to investigate the influence of duration of menopause, anthropometric and hormonal parameters on metabolic syndrome. Material and methods. 50 obese women were examined with BMI=31.92?5.83 kg/m2, age 54.40?3.64, time since menopause 5.90?5.46 years. Control group consisted of 37 normal weight women with BMI=23.50?2.13 kg/m2, age 53.92?3.95, time since menopause 5.96?4.92 years. Anthropometric characteristics and blood pressure were measured. Blood was taken at 8 am for: fasting glucose, triglycerides, cholesterol, HDL, LDL, apolipoprotein A (ApoA), apolipoprotein B (ApoB), lipoprotein(a) (Lp(a)), C-reactive protein (CRP), fibrinogen, FSH, LH, prolactin, estradiol, progesterone, testosterone and sex hormone binding globulin (SHBG). Results. In obese women significant negative correlations were found for: BMI and HDL (p<0,05), waist and HDL (p<0,05), FSH and systolic blood pressure (p<0.01), FSH and fasting glucose (p<0,05), LH and waist (p<0.05), SHBG and fasting glucose (p<0.05). A positive correlation was found for lime since meno?pause and waist/hip ratio (p<0.05). In controls positive correlations were found for: waist/hip ratio and systolic and diastolic blood pressure (p<0,05), LH and HDL (p<0.05), estradiol and diastolic blood pressure (p<0,05). Negative correlations were detected for estradiol and waist (p<0,05), time since menopause and HDL (p<0,05). Conclusion. Gaining weight together with menopausal endocrine changes cause metabolic and hemodynamic imbalances, which contribute to risk for cardiovascular diseases.

Nitrogen retention during late gestation in the rat in response to marginal zinc intake

1980 ◽  
Vol 239 (2) ◽  
pp. E113-E118 ◽  
Author(s):  
S. Greeley ◽  
G. J. Fosmire ◽  
H. H. Sandstead
Keyword(s):  
Nitrogen Retention ◽  
Basal Diet ◽  
Maternal Plasma ◽  
Late Gestation ◽  
Nitrogen Excretion ◽  
Control Group ◽  
Dietary Zinc ◽  
Dietary Nitrogen ◽  
Multiple Stepwise Regression Analysis ◽  
Zinc Concentrations

This study was conducted to characterize nitrogen retention in response to marginal dietary zinc during gestation. Long-Evans rats were randomly assigned to one of two dietary groups on day 1 of gestation. The dams were fed a basal diet supplemented with either restricted or control levels of zinc. Feces and urine were collected for 24 h on day 20 of pregnancy, and their nitrogen and zinc contents were determined. Urinary and fecal nitrogen excretions were similar for zinc-restricted and control dams, whereas fecal zinc excretions were depressed by feeding the zinc-restricted diet. Mean zinc and nitrogen retentions were negative for the zinc-restricted and positive for the control groups. Multiple stepwise regression analysis showed that nitrogen retention on day 20 depended on both dietary nitrogen and zinc intakes. Zinc-restricted offspring weighed 12% less and the maternal plasma zinc concentrations were reduced by 66% when compared with the control group values on day 22. Marginal dietary zinc and the associated anorexia limited fetal growth without causing excessive nitrogen excretion or severe weight loss.

scholarly journals Association between markers of cardiovascular risk and clinical parameters of periodontitis

2013 ◽  
Vol 42 (5) ◽  
pp. 336-343 ◽  
Author(s):  
José Eduardo Gomes Domingues ◽  
Mario Vianna Vettore ◽  
Emerson Silva Lima
Keyword(s):  
Cardiovascular Risk ◽  
Periodontal Disease ◽  
Dental Plaque ◽  
Univariate Analysis ◽  
Plasma Concentrations ◽  
Analysis Of Covariance ◽  
High Density Lipoproteins ◽  
Control Group ◽  
Case Group ◽  
Clinical Parameters

INTRODUCTION: Periodontal disease is an inflammatory response to bacteria that reside in the gum tissue and can have systemic repercussion. OBJECTIVE: The aim of this study was to assess the relationship between periodontitis and markers of cardiovascular risk. MATERIAL AND METHOD: Ninety selected patients were assigned into two groups in accordance with their levels of probing pocket depth (PPD) and Clinical Attachment Level (CAL): control group, n= 45 (< 4 sites with PPD ≥ 4.0 mm and CAL ≥ 3.0 mm) and case group, n= 45 (≥ 30% of sites with PPD ≥ 4.0 mm and CAL ≥3.0 mm). Plasma concentrations of C-reactive protein, high sensitive CRP, high-density lipoproteins (HDL-c) and electronegative low density lipoproteins (LDL) were assessed in all participants. Data from medical history and socioeconomic level were also collected from patients. RESULT: Plasma levels of HDL-c were lower in subjects with periodontal disease (p = 0.016) and were inversely associated with the number of sites with PPD ≥ 3 mm (rho= -0.325) and number of sites with PPD ≥ 3 mm and CAL ≥ 3 mm (rho= -0.216). These associations remained significant after adjustments for dental plaque and smoking using Univariate Analysis of Covariance (p < 0.05). Adjusted odds ratio between periodontal disease and levels of HDL-c was 0.94 (CI95% 0.88-0.99) after adjusting for age, smoking and dental plaque. Other investigated markers of cardiovascular risk were not related to periodontal disease. CONCLUSION: Clinical parameters of periodontitis were inversely associated with plasma concentrations of HDL-c.

Dietary Zinc Intake and Plasma Zinc Concentrations in Children with Short Stature and Failure to Thrive

2016 ◽  
Vol 69 (1) ◽  
pp. 9-14 ◽  
Author(s):  
Nadine Yazbeck ◽  
Rima Hanna-Wakim ◽  
Rym El Rafei ◽  
Abir Barhoumi ◽  
Chantal Farra ◽  
...  
Keyword(s):  
Short Stature ◽  
Zinc Deficiency ◽  
Growth Parameters ◽  
Medical Center ◽  
Failure To Thrive ◽  
Plasma Zinc ◽  
Dietary Zinc ◽  
Zinc Intake ◽  
Significant Difference ◽  
Zinc Concentrations

Background: The burden of zinc deficiency on children includes an increased incidence of diarrhea, failure to thrive (FTT) and short stature. The aim of this study was to assess whether children with FTT and/or short stature have lower dietary zinc intake and plasma zinc concentrations compared to controls. Methods: A case-control study conducted at the American University of Beirut Medical Center included 161 subjects from 1 to 10 years of age. Results: Cases had a statistically significant lower energy intake (960.9 vs. 1,135.2 kcal for controls, p = 0.010), lower level of fat (30.3 vs. 36.5 g/day, p = 0.0043) and iron intake (7.4 vs. 9.1 mg/day, p = 0.034). There was no difference in zinc, copper, carbohydrate and protein intake between the 2 groups. The plasma zinc concentration did not differ between the cases and controls (97.4 vs. 98.2 μg/dl, p = 0.882). More cases had mild-to-moderate zinc deficiency when compared to controls with 10.3 vs. 3.6%, p = 0.095. Conclusion: Our study did not show statistically significant difference in dietary zinc intake and plasma zinc concentrations between children with FTT and/or short stature compared to healthy controls. A prospective study is planned to assess the effect of zinc supplementation on growth parameters in FTT children.

Does Zinc Absorption Reflect Zinc Status?

2010 ◽  
Vol 80 (45) ◽  
pp. 300-306 ◽  
Author(s):  
Janet C. King
Keyword(s):  
Physiological State ◽  
Absorption Efficiency ◽  
Zinc Homeostasis ◽  
Zinc Transporters ◽  
Whole Body ◽  
Zinc Absorption ◽  
Zinc Status ◽  
Dietary Zinc ◽  
Zinc Intake ◽  
Supplemental Zinc

Unlike iron, zinc absorption is influenced by dietary zinc intake, not zinc status. As dietary zinc increases, the total amount of absorbed zinc increases while the percent absorbed declines. The gastrointestinal tract maintains whole-body zinc homeostasis by adjusting endogenous zinc losses to the amount absorbed. At intakes below about 9 mg/day, zinc absorption occurs primarily by a saturable (carrier) process involving ZIP4, ZnT1, and other transporters. There is no evidence that past zinc intakes, or status, influences zinc absorption. Instead, current zinc intake is the chief determinant of zinc absorption. Supplemental zinc taken with water in the post-absorptive state initially is absorbed more efficiently than food zinc, but absorption efficiency declines within 24 hours presumably due to down-regulation of the zinc transporters. More research is needed to understand the effect of physiological state on zinc absorption.

Zinc intake and status in Austria in the light of different reference values

2017 ◽  
Vol 87 (3-4) ◽  
pp. 169-178 ◽  
Author(s):  
Ibrahim Elmadfa ◽  
Alexa L. Meyer ◽  
Timo Kuen ◽  
Karin Wagner ◽  
Verena Hasenegger
Keyword(s):  
Reference Values ◽  
Daily Intake ◽  
The Elderly ◽  
Institute Of Medicine ◽  
Zinc Status ◽  
Dietary Zinc ◽  
Zinc Intake ◽  
Antioxidative Status ◽  
Nationally Representative ◽  
Using Data

Abstract. Zinc has been identified as a critical micronutrient also in high-income countries. There is still some uncertainty about the evaluation of zinc sufficiency due to divergent daily intake reference values. We wanted to exemplify this issue using data from the Austrian Study on Nutritional Status 2012. Plasma zinc concentrations were measured in a nationally representative sample of 872 persons aged 6–80 years (55.5 % female). Dietary zinc intake was estimated from two 24h dietary recalls. Additionally, parameters of the antioxidative status (plasma malondialdehyde (MDA), total antioxidative capacity) and activities of alkaline phosphatase (AP), superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSH-Px)) were determined. Zinc status was marginal in schoolchildren (40 % of boys and 22 % of girls) and in elderly (28 % of men and 33 % of women). Dietary zinc intake was also unsatisfactory in these groups with 38 % of boys and 32 % of girls and 64.5 % of older men below the nationally recommended intake levels. However, the adequacy of zinc intake varied with different reference values. Adults were more likely to meet the D-A-CH reference values and those from the European Food Safety Authority than the recommendations of the International Zinc Nutrition Consultative Group (IZiNCG) and the Institute of Medicine, whereas children met the IZiNCG values best. Zinc status correlated weakly with AP activity (r = –0.298, p < 0.001) and some antioxidant status markers (CAT, MDA, GSH-PX, SOD), especially in the elderly (MDA: r = –0.527, p < 0.001, and SOD: r = –0.466, p = 0.002). Our results suggest a suboptimal zinc supply in Austria particularly among schoolchildren and older adults.

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