scholarly journals FEATURES OF LIPID METABOLISM IN OVERWEIGHT AND OBESE ADOLESCENTS DEPENDING ON THE VARIOUS LEVELS OF VITAMIN D

Author(s):  
A-M. A. Shulhai ◽  
H. A. Pavlyshyn

Vitamin D deficiency and overweight have now become an important global problem in the field of health care as well as public health. A substantial hypovitaminosis D in children with obesity is often accompanied by metabolic disorders. The aim of the study was to determine the relationship between the levels of vitamin D and lipid metabolism markers in adolescents with overweight and obesity. Material and methods. 139 adolescents were examined (63 (45.4 %) girls and 76 (54.7 %) boys). Depending on the body mass index (BMI) 65 children were overweight and 74 were obese children. The mean age of teenagers was (15,4±2,3) years. To establish vitamin D status using the immune-enzyme method, blood serum levels of 25(OH)D were determined. Lipid metabolism markers were determined using the Roche Diagnostics Cholesterol reagent kit using and automatic Cobas c111 analyzer. Results. The study established a direct relationship between the level of vitamin D and high-density lipoprotein cholesterol and indirect with total cholesterol, triglycerides, low-density lipoprotein cholesterol, atherogenic index, body mass index and waist circumference. Using a simple linear regression analysis, it was determined that total cholesterol, low-density lipoprotein cholesterol and atherogenic index have the greatest correlation with vitamin D. Conclusions: Vitamin D deficiency in overweight and obese adolescents is associated with an increase in the body mass index, blood pressure, and atherogenic dyslipidemia.

Author(s):  
Takahisa Ohta ◽  
Junzo Nagashima ◽  
Hiroyuki Sasai ◽  
Naokata Ishii

Low cardiorespiratory fitness (CRF) and obesity are independent risk factors for dyslipidemia. We investigated the synergistic effects of CRF and obesity on the incidence of dyslipidemia among Japanese women. Of 7627 participants, 927 normolipidemic Japanese women completed a submaximal exercise test, medical examination, and a questionnaire on smoking and alcohol drinking. The incidence of dyslipidemia was defined as having at least one of the following: high-density lipoprotein cholesterol < 40 mg/dL, low-density lipoprotein cholesterol ≥ 140 mg/dL, fasting triglyceride ≥ 150 mg/dL, or physician-diagnosed dyslipidemia. Multivariable hazard ratios (HRs) and 95% confidence intervals (CI) were calculated using a Cox proportional hazard regression model. During the follow-up period of ≤16 years (median 1 year), 196 (21.1%) women developed dyslipidemia. Compared with those in the body mass index (BMI)-specific (< or ≥25.0 kg/m2) lowest CRF tertile, the multivariable HRs for dyslipidemia in the highest CRF tertile were 1.36 (95% CI, 0.75–2.48) for women with BMI ≥ 25 kg/m2 and 0.70 (95% CI, 0.45–1.09) for those with BMI < 25 kg/m2 (p < 0.01 for interaction). These results suggest that CRF and BMI are interdependent and, together, they affect the incidence of dyslipidemia among Japanese women. CRF is inversely related to a lower incidence of dyslipidemia with low BMI.


2021 ◽  
Vol 23 (3) ◽  
pp. 411-416
Author(s):  
I. M. Bilai ◽  
M. I. Romanenko ◽  
D. H. Ivanchenko

Statin side effects are not a rare occurrence, in particular dyspeptic disorders, insomnia, headache, skin erythema, rash are often noted. All of this determines scientists to find new effective and low-toxic hypolipidemic agents. Various natural and synthetic xanthine derivatives have been recognized as therapeutically potential compounds and reported to control various diseases. Therefore, the study of new xanthine derivatives and their hypolipidemic effects, which would have a significant therapeutic effect with minimal side effects, is relevant. The aim of the study was to examine the effect of 7-β-hydroxy-γ-aryloxypropylxanthinyl-8-thioalkanic acid derivatives on lipidogram parameters in experimental laboratory rats. Materials and methods. The objects of the study were 7-β-hydroxy-γ-aryloxypropylxanthinyl-8-thioalkanic acid derivatives. The experiments were performed in white laboratory Wistar rats weighing 180–220 g. Experimental modeling of hyperlipidemia – tween model: intraperitoneal administration of tween-80 at a dose of 200 mg/100 g body weight. The test compounds were administered orally, simultaneously with tween, at a dose of 1/10 of LD50 (previously calculated by Prozorovsky express method) for 6 days. The following indicators of lipidogram were determined: total cholesterol (TC), high-density lipoprotein cholesterol (HDL cholesterol), low-density lipoprotein cholesterol (LDL cholesterol), triglycerides (TG) and atherogenic index of plasma: TC – HDL cholesterol / HDL cholesterol. The experiments were carried out with respect to Bioethical rules and norms. Results. The studies have shown data on the hypolipidemic activity of 7-β-hydroxy-γ-aryloxypropylxanthinyl-8-thioalkane acid derivatives. According to the conditional efficiency index Ʃ, which included the overall percentage of the following indicators – total cholesterol, low-density lipoprotein cholesterol and triglycerides, the leading compounds were 2439 (87.47 %), 6047 (82.30 %). The reference drug atorvastatin had a value of 82.98 %. Conclusions. The major compound was 2439 identified among all compared to the control group. The prospect of further research is a more detailed study on the ability of xanthine derivatives to exhibit hypolipidemic effects and to influence oxidative stress in various hyperlipidemic models.


Author(s):  
Shahenda, M. Elaby ◽  
Asmaa A. Salem ◽  
Jehan, B. Ali ◽  
A. F. Abdel-Salam

Two lactobacilli strains; Lactobacillus acidophilus ATCC 20079 and Lactobacillus plantarum ATCC 20179 and two bifidobacteria strains; Bifidobacterium bifidum GSGG 5286 and Bifidobacterium longum ATCC 15707 were studied their abilities to reduce the cholesterol content in vitro. It was investigated that the in vivo cholesterol-lowering effect of L. plantarum ATCC 20179, B. bifidum GSGG 5286 and mixture of both probiotics (L. plantarum ATCC20179 and B. bifidum GSGG5286) on hyperlipidaemic rats for 8 weeks. All lactobacilli and bifidobacteria strains assimilate the cholesterol content in laboratory media. It was observed the highest assimilation of cholesterol was in L. plantarum ATCC 20179 and B. bifidum GSGG 5286 strains. In vivo, L. plantarum ATCC 20179  group was more effective in improving serum lipid profile levels [total cholesterol (TC), triglycerides (TG), low density lipoprotein – cholesterol (LDL-C), high density lipoprotein – cholesterol                   (HDL-C), very low density lipoprotein – cholesterol (VLDL-C) and Atherogenic Index (AI)],                      liver enzyme activities (ALT, AST and ALP),  malonaldehyde (MDA), hydrogen peroxide (H2O2) and total antioxidants capacity (TAC) levels than mixed-organisms and B. bifidum groups, respectively of hyperlipidaemic rats. It was concluded that L. plantarum ATCC 20179 showed more                     favourable results than B. bifidum GSGG 5286 in relation to cardiovascular risk factors in hyperlipidaemic rats.


Author(s):  
Irina S. Sobolevskaya ◽  
◽  
Oleg D. Myadelets ◽  
Natalʼya N. Yarotskaya

The purpose of this study was to substantiate the possibility of correcting lipid metabolism changes at dark deprivation using linseed oil, melatonin, and their combination. Materials and methods. The experiment involved 130 white outbred male rats with a body weight of 170–220 g. The animals were divided into 5 groups: rats under standard fixed lighting conditions (12 hours light/12 hours dark); rats under modelled dark deprivation with round-the-clock lighting (24 hours light); rats under modelled dark deprivation with round-the-clock lighting (24 hours light) receiving intragastric injections of linseed oil, melatonin or their combination from day 1 of the experiment. Serum concentrations of total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), total phospholipids (TPL) and atherogenic index (AI) were determined. Results. Long-term dark deprivation led to dyslipoproteinemia, which consists in an increase in serum concentrations of TC by a factor of 1.33 (p = 0.0009), TG by a factor of 1.62 (p = 0.013), LDL-C by a factor of 1.2 (p = 0.026) and TPL by a factor of 1.15 (p = 0.0082). The severity of changes in TC, TG, LDL-C, HDL-C and TPL concentrations varied depending on the duration of the experiment. During the use of linseed oil, melatonin or their combination under dark deprivation, the severity of disorders caused by desynchronosis decreased and lipid metabolism in rat serum normalized, especially at the initial stages of the research. Conclusion. Changes in lipid metabolism due to desynchronosis in rats injected with the substances under study were significantly smaller compared with animals that did not receive them. The most pronounced effects of administering these substances were observed in the group of rats treated with linseed oil and melatonin at the same time.


2021 ◽  
Author(s):  
Jianbo Shu ◽  
Xinhui Wang ◽  
Mingying Zhang ◽  
Xiufang Zhi ◽  
Jun Guan ◽  
...  

Abstract Objective There is an increased level of low-density lipoprotein cholesterol (LDL-C)in children with type 1 diabetes mellitus(T1DM). In addition, the Vitamin D level in T1DM patients is usually below the normal reference range. The aim of this study was to explore the relationship between Vitamin D levels and LDL-C in Chinese children with T1DM. Methods A retrospective cross-sectional study was conducted in the Endocrine inpatient wards of Tianjin Children’s Hospital, 143 children with T1DM were included. The related clinical and laboratory examinations, including anthropometric parameters, lipid profiles, and Vitamin D levels, were collected in all subjects. Results The univariate analysis results did not show a significant correlation between Vitamin D levels and LDL-C (P=0.634). Furthermore, a nonlinear relationship was observed between Vitamin D levels and LDL-C by smooth curve fitting after adjusting for potential confounders. A multivariate piecewise linear regression model revealed a significant negative association between LDL-C and Vitamin D levels when LDL-C was greater than 3.1 mmol/L(β -2.9, 95% CI -5.4,-0.5; P=0.022). However, we did not observe a significant relationship between LDL-C and Vitamin D levels when LDL-C was lower than 3.1 mmol/L(β 2.4, 95% CI -0.2,5.1; P=0.076).Conclusions This study identified a nonlinear relationship between Vitamin D levels and LDL-C independent of other potential confounding factors, suggesting that the deficiency or insufficiency of Vitamin D in T1DM children with high LDL-C levels should be considered, especially LDL-C is higher than 3.1 mmol/L, which provides evidence of the timing about Vitamin D supplementation in T1DM children.


2020 ◽  
Vol 9 (14) ◽  
Author(s):  
Feitong Wu ◽  
Markus Juonala ◽  
Matthew A. Sabin ◽  
Marie‐Jeanne Buscot ◽  
Katja Pahkala ◽  
...  

Background Whether long‐term exposure to overweight or obesity from early life to adulthood has a detrimental influence on health outcomes is unknown. We aimed to investigate whether duration of overweight or obesity from youth to adulthood is associated with adult cardiometabolic risk. Methods and Results A population‐based cohort study was performed of 1268 youths, aged 3 to 18 years, with follow‐ups at 3, 6, 9, 12, 21, 27, and 31 years. Duration of overweight or obesity over 31‐year follow‐up was calculated. Adulthood outcomes included type 2 diabetes mellitus, impaired fasting glucose, high insulin levels, high carotid intima‐media thickness, hypertension, low high‐density lipoprotein cholesterol, high low‐density lipoprotein cholesterol and triglycerides, arterial pulse wave velocity, carotid artery compliance, Young elastic modulus, and stiffness index. Rates of overweight/obesity were 7.9% at baseline and 55.9% after 31 years. After adjustment for confounders, longer duration of overweight or obesity was associated with increased risk of all outcomes (relative risk ranged from 1.45–9.06 for type 2 diabetes mellitus, impaired fasting glucose, carotid intima‐media thickness, hypertension, high‐density lipoprotein cholesterol, low‐density lipoprotein cholesterol, and triglycerides; β from 0.370–0.543 m/s for pulse wave velocity; –0.193 to –0.237 %/10 mm Hg for carotid artery compliance; 52.1–136.8 mm Hg·mm for Young elastic modulus; and 0.554–0.882 for stiffness index). When body mass index was further adjusted, these associations disappeared or were substantially reduced. Detrimental associations of adult body mass index with all outcomes were robust to adjustment for confounders and duration of overweight or obesity. Conclusions Overweight or obesity in adulthood rather than childhood appears to be more important for adult cardiometabolic health.


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