Metabolic and Blood Pressure Effects of Walnut Supplementation in a Mouse Model of the Metabolic Syndrome

نویسندگان

  • Nicola J. A. Scott
  • Leigh J. Ellmers
  • Anna P. Pilbrow
  • Lotte Thomsen
  • Arthur Mark Richards
  • Chris M. Frampton
  • Vicky A. Cameron
چکیده

There is extensive evidence that walnut consumption is protective against cardiovascular disease and diabetes in the healthy population, but the beneficial effects of walnut consumption in individuals with the metabolic syndrome (MetS) remain uncertain. We compared a range of cardio-metabolic traits and related tissue gene expression associated with 21 weeks of dietary walnut supplementation in a mouse model of MetS (MetS-Tg) and wild-type (WT) mice (n = 10 per genotype per diet, equal males and females). Compared to standard diet, walnuts did not significantly alter food consumption or body weight trajectory of either MetS-Tg or WT mice. In MetS-Tg mice, walnuts were associated with reductions in oral glucose area under the curve (gAUC, standard diet 1455 ± 54, walnut 1146 ± 91, p = 0.006) and mean arterial blood pressure (MAP, standard diet 100.6 ± 1.9, walnut 73.2 ± 1.8 mmHg, p < 0.001), with neutral effects on gAUC and MAP in WT mice. However, in MetS-Tg mice, walnuts were also associated with trends for higher plasma cholesterol (standard diet 4.73 ± 0.18, walnut 7.03 ± 1.99 mmol/L, p = 0.140) and triglyceride levels (standard diet 2.4 ± 0.5, walnut 5.4 ± 1.6 mmol/L, p = 0.061), despite lowering cholesterol and having no effect on triglycerides in WT mice. Moreover, in both MetS-Tg and WT mice, walnuts were associated with significantly increased liver expression of genes associated with metabolism (Fabp1, Insr), cell stress (Atf6, Ddit3, Eif2ak3), fibrosis (Hgf, Sp1, Timp1) and inflammation (Tnf, Ptpn22, Pparg). In conclusion, dietary walnuts were associated with modest favourable effects in WT mice, but a combination of beneficial and adverse effects in MetS-Tg mice, and up-regulation of hepatic pro-fibrotic and pro-inflammatory genes in both mouse strains.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The Effect of Bunium persicum (Boiss.) B. Fedtsch. Consumption on Metabolic Syndrome Indices, Muscle Strength, and Cardio-respiratory Function in Active Middle-aged Women: A Randomized Clinical Trial

Background: The effect of Bunium persicum (Boiss.) B. Fedtsch. on the metabolic syndrome and physical fitness of active people have been less studied. Objective: The purpose of this study was to investigate the effect of B. persicum consumption on metabolic syndrome indices, muscle strength, and cardio-respiratory function in active middle-aged women. Method: The research method was quasi-e...

متن کامل

The Effect of Oral L-arginine Supplementation on Blood Pressure in Patients with Metabolic Syndrome: A Randomized Clinical Trial

Objective: Hypertension is a common component of metabolic syndrome (MetS). Some studies showed that L-arginine reduced the blood pressure (BP) .Therefore this study was designed to evaluate the effect of L-arginine supplementation on BP in MetS. Materials and Methods: In this randomized, double-blind, placebo-controlled trials, 60 patients with MetS were randomly divided into two groups: the ...

متن کامل

اثر مکمل‌یاری با کوآنزیم 10Q بر شاخص‌های التهابی(هموسیستئین و hs-CRP) و فشار خون در افراد مبتلا به سندرم متابولیک

Introduction: Metabolic syndrome (MetS) encompasses a cluster of coronary heart disease risk factors, including abdominal obesity, glucose intolerance, dyslipidemia and elevated blood pressure that is associated with increased inflammatory markers. The purpose of this study was to investigate the effect of coenzyme Q10 (CoQ10) blood pressure and inflammatory markers in patients with metabolic s...

متن کامل

Calcium and vitamin D supplementation effects on metabolic factors, menstrual cycles and follicular responses in women with polycystic ovary syndrome: A systematic review and meta-analysis

Background: Polycystic ovary syndrome (PCOS) is the most popular endocrine disorder in reproductive age with unknown etiology and many comorbidities. This systematic review focused on the effectiveness of calcium and vitamin D (Ca/ Vit.D) supplementation on metabolic factors, menstrual cycles, and follicular responses in PCOS patients. Methods: Relevant studies were identified from the followi...

متن کامل

Effect of Cinnamon and its Biologically Active Compounds on the Components and Symptoms of Metabolic Syndrome

Background and purpose: Metabolic syndrome refers to a set of diseases including insulin resistance, high blood glucose levels, obesity, high blood pressure, and dyslipidemia. The cinnamon plant is a member of the Lauraceae family and is considered a universal medicinal plant. Traditional medicine studies reported the therapeutic effects of this plant in the reduction of blood glucose levels, b...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره 9  شماره 

صفحات  -

تاریخ انتشار 2017