scholarly journals The Combination of a Diversified Intake of Carbohydrates and Fats and Supplementation of Vitamin D in a Diet Does Not Affect the Levels of Hormones (Testosterone, Estradiol, and Cortisol) in Men Practicing Strength Training for the Duration of 12 Weeks

2020 ◽  
Vol 17 (21) ◽  
pp. 8057
Author(s):  
Michał Wrzosek ◽  
Jakub Woźniak ◽  
Dariusz Włodarek
Keyword(s):  
Vitamin D ◽  
Strength Training ◽  
Cortisol Level ◽  
High Fat Diet ◽  
Vitamin D Supplementation ◽  
Sex Hormone Binding Globulin ◽  
High Fat ◽  
Before And After ◽  
Carb Diet ◽  
Caloric Requirements

This study aims to verify the extent to which a diversification of carbohydrates and fats intake in a diet, together with the reduction in vitamin D deficiency, impact the levels of hormones (testosterone, estradiol, cortisol) and Sex Hormone Binding Globulin (SHGB) in men doing strength training. The research involved 55 men aged 19–35. The participants were divided into two groups following two interventional diets for 12 weeks: high-fat diet (LCHF) or high-carb diet (LFHC), which were applied to satisfy the caloric requirements of each participant. Moreover, vitamin D supplementation was included. Moreover, both before and after following interventional diets, the level of hormones in participant’s blood was examined. After 12 weeks of following interventional diets in both groups, no changes of the levels of testosterone and estradiol, as well as SHGB, were found. The cortisol level in both groups decreased; however, only in the LFHC group was the change statistically significant (p = 0.03) and amounted to −3.5% (the cortisol level on an empty stomach in this group decreased from 14.17 ± 3.35 to 13.93 ± 2.63 mcg/dl). In both groups, the supplementation of vitamin D brought about a significant change in the level of vitamin D metabolite (25 (OH) D) (p = 0.01). In the LCHF group, the level of metabolite increased by 95%, and by 58.3% in the LFHC group. The increase in vitamin D metabolite in blood was higher in the LCHF group than the LFHC group, which might have resulted from the supplementation of this vitamin.

Histological, metabolic, and inflammatory changes in the renal tissues of high-fat diet-induced obese rats after vitamin D supplementation

2020 ◽  
Vol 50 (6) ◽  
pp. 1135-1149 ◽  
Author(s):  
Amir-Hossein Avestaei ◽  
Mahdi Yaghchiyan ◽  
Alireza Ali-Hemmati ◽  
Mahdieh Abbasalizad Farhangi ◽  
Mehran Mesgari-Abbasi ◽  
...  
Keyword(s):  
Vitamin D ◽  
Uric Acid ◽  
High Fat Diet ◽  
Structural Changes ◽  
Renal Tissue ◽  
Vitamin D Supplementation ◽  
High Fat ◽  
Content Type ◽  
Obese Rats ◽  
Inflammatory Changes

Purpose Obesity is a major risk factor for chronic renal fibrosis and kidneys’ structural and inflammatory impairments. This study aims to examine the possible therapeutic effects of vitamin D supplementation against renal inflammatory and kidney’s structural fibrosis and degeneration. Design/methodology/approach Forty male Wistar rats were divided into two groups for 16 weeks: normal diet (ND) and high-fat diet (HFD); then, each group was subdivided into two groups including ND, ND + vitamin D and HFD, HFD + vitamin D. Vitamin D supplementation was done for five weeks at 500 IU/kg dosage. Renal tissue concentrations of tumor necrosis factor (TNF)-α, interleukin 6, interleukin 1 beta, monocyte chemoattractant protein (MCP)-1 and transforming growth factor-beta (TGF-β), serum values of lipids, markers of glucose homeostasis and urea, creatinine and uric acid and renal tissue histological and structural changes were determined. Findings HFD feeding caused remarkable histological and structural changes including higher TNF-α, MCP-1 and TGF-β concentrations in renal tissues of rats, whereas vitamin D has potent anti-inflammatory effects (P = 0.036, 0.047 and 0.02, respectively). Vitamin D administration also reduced urea and uric acid concentrations (P = 0.023 and 0.049, respectively). Moreover, vitamin D reduced glomerulomegaly, reduced lipid accumulation and limited dilated Bowman’s space in rats and improved glycemic status by increasing insulin (P = 0.04) and reducing insulin resistance (P = 0.006). Research limitations/implications The current study has some limitations. It was better to measure the level of inflammatory cytokines’ expression in the kidney tissues. Additionally, the measurement of baseline values of inflammatory cytokines was not possible because of the possibility of animals’ drop-out. Practical implications According to the study findings, vitamin D treatment in the current report showed a significant therapeutic role in reducing inflammation, improving glycemic and lipid abnormalities and structural and histological modifications in renal tissues of rats. These findings have a great value because after confirming in a human model, vitamin D can be suggested as a potential therapeutic tool in clinical practice. Social implications After being confirmed by other animal or human researches, the results of the current work could have great social implications by reducing the prevalence of obesity-related renal complications and highlighting the beneficial roles of vitamin D. Originality/value To the best of the authors’ knowledge, this is the first study to investigate the histological and inflammatory changes in the kidneys and metabolic parameters in the HFD induced rats and also clarified the therapeutic roles of vitamin D in ameliorating the inflammatory, histological, metabolic and functional changes in the kidneys of obese rats.

scholarly journals The Impact of Obesity and a High-Fat Diet on Clinical and Immunological Features in Systemic Lupus Erythematosus

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 504
Author(s):  
Masanori Kono ◽  
Yasuo Nagafuchi ◽  
Hirofumi Shoda ◽  
Keishi Fujio
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Vitamin D ◽  
Lupus Erythematosus ◽  
High Fat Diet ◽  
Dietary Habits ◽  
Vitamin D Supplementation ◽  
High Fat ◽  
Childbearing Age ◽  
Systemic Lupus ◽  
The Impact

Systemic lupus erythematosus (SLE) is a chronic autoimmune disease with multiple organ involvement predominantly affecting women of childbearing age. Environmental factors, as well as genetic predisposition, can cause immunological disturbances that manifest as SLE. A habitual high-fat diet and obesity have recently been reported to play a role in the pathogenesis of autoimmune diseases. The frequency of obesity is higher in patients with SLE than in general populations. Vitamin D and adipokines, such as leptin and adiponectin, are possible mediators connecting obesity and SLE. Serum leptin and adiponectin levels are elevated in patients with SLE and can impact innate and adaptive immunity. Vitamin D deficiency is commonly observed in SLE. Because vitamin D can modulate the functionality of various immune cells, we review vitamin D supplementation and its effects on the course of clinical disease in this work. We also discuss high-fat diets coinciding with alterations of the gut microbiome, or dysbiosis. Contingent upon dietary habits, microbiota can be conducive to the maintenance of immune homeostasis. A high-fat diet can give rise to dysbiosis, and patients who are affected by obesity and/or have SLE possess less diverse microbiota. Interestingly, a hypothesis about dysbiosis and the development of SLE has been suggested and reviewed here.

The Impact of Vitamin D Supplementation on Neurodegeneration, TNF-α Concentration in Hypothalamus, and CSF-to-Plasma Ratio of Insulin in High-Fat-Diet-Induced Obese Rats

2016 ◽  
Vol 61 (2) ◽  
pp. 247-255 ◽  
Author(s):  
Ghazaleh Nameni ◽  
Ghazaleh Hajiluian ◽  
Parviz Shahabi ◽  
Mahdieh Abbasalizad Farhangi ◽  
Mehran Mesgari-Abbasi ◽  
...  
Keyword(s):  
Vitamin D ◽  
High Fat Diet ◽  
Vitamin D Supplementation ◽  
High Fat ◽  
Plasma Ratio ◽  
Tnf Α ◽  
Obese Rats ◽  
The Impact

Evaluation of the hormonal and biochemical changes in obese and non-obese PCOS Iraqi women before and after vitamin D supplementation

2019 ◽  
Vol 9 (o3) ◽  
Author(s):  
Suaad Muhssen Ghazi ◽  
Fatin Shallal Farhan
Keyword(s):  
Vitamin D ◽  
Serum Vitamin ◽  
Follicular Development ◽  
High Body Mass Index ◽  
Vitamin D Supplementation ◽  
The Body ◽  
Obese People ◽  
Serum Vitamin D ◽  
Before And After ◽  
Granulose Cells

Vitamin D deficiency is common in women with polycystic ovarian syndrome. Vitamin D plays an important physiologic role in reproductive functions of ovarian follicular development and luteinization through altering anti-müllerian hormone signaling, follicular stimulating hormone activity and progesterone production in human granulose cells. Vitamin D is precipitated in adipose fat tissues, making it notable to be used for the body as a result; obese people with high body mass index are already highly expected to have low levels of serum vitamin D.

High-dose Cholecalciferol Supplementation Reducing Morning Blood Pressure in Normotensive DM1 Patients

2020 ◽  
Vol 16 ◽  
Author(s):  
Natércia Neves Marques de Queiroz ◽  
Franciane Trindade Cunha de Melo ◽  
Fabrício de Souza Resende ◽  
Luísa Corrêa Janaú ◽  
Norberto Jorge Kzan de Souza Neto ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Vitamin D ◽  
Blood Pressure Monitoring ◽  
Vitamin D Supplementation ◽  
High Dose ◽  
Before And After ◽  
Patients With Diabetes ◽  
Morning Blood Pressure ◽  
Cholecalciferol Supplementation ◽  
Lipids Profile

Background: Vitamin D (VD) deficiency has been related to several endocrine metabolic and cardiovascular diseases. Effect of VD supplementation on blood pressure (BP) in patients with diabetes is controversial. Objective: The aim of this study was to evaluate high-dose vitamin D supplementation effects on blood pressure of normotensive type 1 diabetes mellitus (T1DM) patients by 24-hour ambulatory blood pressure monitoring (ABPM). Methods: We performed a clinical trial including 35 T1DM normotensive patients, who received doses of 4,000 or 10,000 IU/day of cholecalciferol for 12 weeks according to previous VD levels. They underwent 24-hour ABPM, along with glycated hemoglobin, creatine, lipids profile and PCRus dosage before and after VD supplementation. Results and discussion: We found an expressive reduction of systolic and diastolic morning blood pressures (117±14 vs 112±14, p<0,05; 74±9 vs 70±10 mmHg, p<0,05, respectively) with no changes in other pressoric markers. Besides, we noticed a relation between levels of VD after supplementation and diastolic morning blood pressure (r= -0,4; p<0.05). Conclusion: Our study suggests an association between supplementation of high doses of vitamin D and the reduction of morning blood pressure in normotensive T1DM patients.

scholarly journals Effects of Vitamin D Supplementation on CD4+ T Cell Subsets and mTOR Signaling Pathway in High-Fat-Diet-Induced Obese Mice

Nutrients ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 796
Author(s):  
Jeong Hee An ◽  
Da Hye Cho ◽  
Ga Young Lee ◽  
Min Su Kang ◽  
So Jeong Kim ◽  
...  
Keyword(s):  
Vitamin D ◽  
T Cells ◽  
T Cell ◽  
Vitamin D Supplementation ◽  
Mtor Pathway ◽  
T Cell Subsets ◽  
Cd4 T Cell ◽  
Dietary Vitamin ◽  
Mrna Levels ◽  
High Fat

Obesity is associated with an impaired balance of CD4+ T cell subsets. Both vitamin D and obesity have been reported to affect the mTOR pathway. In this study, we investigated the effects of vitamin D on CD4+ T cell subsets and the mTOR pathway. Ten-week-old male C57BL/6 mice were divided into four groups and fed diets with different fat (control or high-fat diets: CON or HFD) and vitamin D contents (vitamin D control or supplemented diets: vDC or vDS) for 12 weeks. T cells purified by negative selection were stimulated with anti-CD3/anti-CD28 mAbs and cultured for 48 h. The percentage of CD4+IL-17+ T cells was higher in the vDS than vDC groups. The CD4+CD25+Foxp3+ T cells percentage was higher in HFD than CON groups. The phospho-p70S6K/total-p70S6K ratio was lower in vDS than vDC, but the phospho-AKT/total-AKT ratio was higher in vDS than vDC groups. Hif1α mRNA levels were lower in vDS than vDC groups. These findings suggest HIF1α plays an important role in vitamin-D-mediated regulation of glucose metabolism in T cells, and dietary vitamin D supplementation may contribute to the maintenance of immune homeostasis by regulating the mTOR pathway in T cells.

Adaptation to high-fat diet accelerates emptying of fat but not carbohydrate test meals in humans

2002 ◽  
Vol 282 (2) ◽  
pp. R366-R371 ◽  
Author(s):  
K. E. Castiglione ◽  
N. W. Read ◽  
S. J. French
Keyword(s):  
Gastric Emptying ◽  
Dietary Intake ◽  
Test Meal ◽  
High Fat Diet ◽  
Lag Phase ◽  
High Fat ◽  
Free Living ◽  
Gastric Emptying Rate ◽  
High Carbohydrate ◽  
Before And After

Previous work has shown that the gastric emptying rate in animals and humans can adapt due to previous dietary intake. The present study investigated whether adaptation in gastric emptying rate due to consumption of a high-fat diet (HFD) is nutrient specific in humans. Gastric emptying of high-fat and high-carbohydrate test meals was measured (using gamma scintigraphy) before and after consumption of an HFD for 14 days in eight free-living male volunteers. Visual analog ratings of appetite were recorded throughout each test. There was no effect of HFD on any parameters of gastric emptying rate (lag phase, half-emptying time, and linear emptying rate) measured for carbohydrate test meals. HFD led to an acceleration of the linear emptying rate of the high-fat test meal (0.36 vs. 0.47%/min; P < 0.05). All meals reduced appetite ratings, but there were no differences between tests. These results support our previous findings of accelerated gastric emptying of high-fat test meals following an HFD and show that these changes appear to be nutrient specific, confirming recent studies in rats.

Sign in / Sign up

Export Citation Format

Share Document