Mónica Andrews1, Néstor Soto2, Miguel Arredondo-Olguín3. 1. Micronutrient Laboratory, Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago, Chile. 2. Endocrinology and diabetes Unit, Hospital San Borja Arriarán, Santiago, Chile. 3. Micronutrient Laboratory, Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago, Chile. Electronic address: marredon@inta.uchile.cl.
Abstract
OBJECTIVE: The aim of this study was to determine the association between iron parameters and inflammation in obese individuals with and without type 2 diabetes mellitus (T2DM). METHODS: We studied 132 obese individuals (OB), 60 individuals with T2DM, 106 obese individuals with T2DM (T2DOB), and 146 controls (C). All of were men aged >30 y. Biochemical, iron nutrition, and oxidative stress parameters were determined. Peripheral mononuclear cells were isolated and total RNA was extracted to quantify tumor necrosis factor (TNF)-α, nuclear factor (NF)-κB, interleukin (IL)-6, toll-like receptor (TLR)-2/4 and hepcidin by quantitative reverse transcription polymerase chain reaction. RESULTS: OB, T2DM, and T2DOB individuals had higher ferritin, retinol-binding protein 4, and thiobarbituric acid reactive substance (TBAR) levels than controls. T2DOB and T2DM individuals showed high high-sensitivity C-reactive protein (hsCRP) levels and OB with and without T2DM had elevated levels of serum hepcidin. Heme oxygenase activity was high in OB and T2DM and there were no differences observed in superoxide dismutase and glutathione parameters. A correlation between TBARS and ferritin in T2DOB was observed (r = 0.31; P < 0.006). Multiple linear regression analysis showed an association between diabetes and obesity with ferritin, TBARS, and hsCRP levels. The upper quartiles of ferritin, TBARS and hepcidin showed an adjusted odd ratio for T2DM of 1.782, 2.250, and 4.370, respectively. TNF-α, IL-6, hepcidin, NF-κB, TLR-2/4 mRNA abundances were increased in T2DM and T2DOB. CONCLUSION: Elevated hsCRP and hepcidin levels, and increased gene expression of TNF-α, IL-6, NF-κB, and TLR-2/4 in patients with diabetes, obesity, or both exacerbate and perpetuate the insulin resistance and inflammatory state.
OBJECTIVE: The aim of this study was to determine the association between iron parameters and inflammation in obese individuals with and without type 2 diabetes mellitus (T2DM). METHODS: We studied 132 obese individuals (OB), 60 individuals with T2DM, 106 obese individuals with T2DM (T2DOB), and 146 controls (C). All of were men aged >30 y. Biochemical, iron nutrition, and oxidative stress parameters were determined. Peripheral mononuclear cells were isolated and total RNA was extracted to quantify tumor necrosis factor (TNF)-α, nuclear factor (NF)-κB, interleukin (IL)-6, toll-like receptor (TLR)-2/4 and hepcidin by quantitative reverse transcription polymerase chain reaction. RESULTS:OB, T2DM, and T2DOB individuals had higher ferritin, retinol-binding protein 4, and thiobarbituric acid reactive substance (TBAR) levels than controls. T2DOB and T2DM individuals showed high high-sensitivity C-reactive protein (hsCRP) levels and OB with and without T2DM had elevated levels of serum hepcidin. Heme oxygenase activity was high in OB and T2DM and there were no differences observed in superoxide dismutase and glutathione parameters. A correlation between TBARS and ferritin in T2DOB was observed (r = 0.31; P < 0.006). Multiple linear regression analysis showed an association between diabetes and obesity with ferritin, TBARS, and hsCRP levels. The upper quartiles of ferritin, TBARS and hepcidin showed an adjusted odd ratio for T2DM of 1.782, 2.250, and 4.370, respectively. TNF-α, IL-6, hepcidin, NF-κB, TLR-2/4 mRNA abundances were increased in T2DM and T2DOB. CONCLUSION: Elevated hsCRP and hepcidin levels, and increased gene expression of TNF-α, IL-6, NF-κB, and TLR-2/4 in patients with diabetes, obesity, or both exacerbate and perpetuate the insulin resistance and inflammatory state.
Authors: Saravanan Subramanian; Pradeep K Pallati; Poonam Sharma; Devendra K Agrawal; Kalyana C Nandipati Journal: Am J Transl Res Date: 2017-07-15 Impact factor: 4.060
Authors: Jurica Nazlić; Diana Jurić; Ivana Mudnić; Zvonimir Boban; Ana Marija Dželalija; Leida Tandara; Daniela Šupe-Domić; Katarina Gugo; Mladen Boban Journal: Foods Date: 2022-06-25
Authors: Fransina Ndevahoma; Munyaradzi Mukesi; Phiwayinkosi V Dludla; Bongani B Nkambule; Elina P Nepolo; Tawanda M Nyambuya Journal: Heliyon Date: 2021-03-11
Authors: Sandro Altamura; Stefan Kopf; Julia Schmidt; Katja Müdder; Ana Rita da Silva; Peter Nawroth; Martina U Muckenthaler Journal: J Mol Med (Berl) Date: 2017-10-03 Impact factor: 4.599