adipocyte Dotaz Zobrazit nápovědu
Cílem naší studie bylo stanovit u asymptomatických prvostupňových příbuzných pacientů s kardiovaskulárním onemocněním korelaci mezi hladinou adipocyte fatty acid binding proteinu (A-FABP) jako možným spojovacím článkem mezi metabolickým syndromem a aterosklerózou, velikostí kalciového skóre (KS) a laboratorními parametry včetně indexů inzulinové rezistence. Soubor a metodika: Bylo vyšetřeno 82 osob (53 mužů) průměrného věku 52,79 ? 9,6 roku, u kterých byla provedena antropometrická a fyzikální vyšetření (stanovení tělesné hmotnosti, výšky, výpočet body mass indexu – BMI, měření kazuálního krevního tlaku) a laboratorní vyšetření (kyselina močová, kreatinin, lipidové spektrum, inzulin, glukóza, C-reaktivní protein, fibrinogen, glykovaný hemoglobin, adipocyte fatty acid binding protein – A-FABP) a stanovení indexů inzulinové rezistence HOMA a QUICKI. Celkové kalciové skóre (KS) bylo stanoveno Agatstonovou metodou, bez nutnosti podávat kontrastní látku. Výsledky: Hladina A-FABP nezávisí statisticky významně na kategorizovaném KS ani na nekategorizovaných hodnotách KS (p = 0,22). Existuje statisticky významná pozitivní závislost hladiny A-FABP na indexu HOMA (p = 0,00688) a statisticky významná negativní závislost na indexu QUICKI (p = 0,0068). Hladina A-FABP je statisticky významně vyšší u žen (p = 0,048), u starších osob (p = 0,043) a u osob s vyšší kategorií BMI (p = 0,029). Ze spojitých proměnných se statisticky významně liší hladina A-FABP vzhledem k věku (p = 0,002), kreatininu (p = 0,026), inzulinu (p = 0,005) a BMI (p = 0,031). Závěr: V naší studii jsme potvrdili u skupiny asymptomatických prvostupňových příbuzných pacientů s KVO korelaci hladiny A-FABP s indexy inzulinové rezistence, BMI, věkem, pohlavím a hodnotou inzulinu a kreatininu. A-FABP se zdá být slibným markerem při stanovení rizika KVO, nicméně tato skutečnost vyžaduje další klinické studie.
The objective of our study was to determine a correlation between the level of adipocyte fatty acid-binding protein (A-FABP) (as a possible link between metabolic syndrome and atherosclerosis), the calcium score (CS) and laboratory parameters, including insulin resistance indices in asymptomatic first degree relatives of patients with cardiovascular diseases. Set and methodology: Examination was conducted in 82 persons (53 male) with the average age of 52.79 ? 9.6. The examinations consisted of anthropometric and physical tests (determination of body weight, height, body mass index – BMI and casual blood pressure measurement), laboratory analysis (uric acid, creatinine, lipid panel, insulin, glucose, C-reactive protein, fibrinogen, glycated hemoglobin, adipocyte fatty acid-binding protein – A-FABP) and determination of insulin resistance indices HOMA and QUICKI. Total calcium score (CS) was determined by the Agatston method without the need to administer a contrast agent. Results: The value of the A-FABP level does not show a statistically significant dependence on the categorised CS or on non-categorised CS values. There is a statistically significant positive dependence of the level of A-FABP on the HOMA index (p = 0.00688) and a statistically significant negative dependence on the QUICKI index (p = 0.0068). The A-FABP level is statistically significantly higher in women (p = 0.048), in elder persons (p = 0.043), and in persons with higher BMI values (p = 0.029). Among continuous variables, statistically significant is the difference in the A-FABP level in relation to age (p = 0.002), creatinine (p = 0.026), insulin (p = 0.005), and BMI (p = 0.031). Conclusion: Our study confirmed the correlation of the A-FABP level with insulin resistance indices, BMI, age, gender, and insulin and creatinine levels in a group of asymptomatic first degree relatives of patients with cardiovascular diseases. A-FABP could potentially be a marker when determining the risk of CVD; however, this conclusion requires additional clinical trials.
- Klíčová slova
- kardiovaskulární onemocnění,
- MeSH
- dospělí MeSH
- hodnocení rizik MeSH
- index tělesné hmotnosti MeSH
- inzulin krev MeSH
- inzulinová rezistence MeSH
- kalcinóza * diagnóza radiografie MeSH
- kardiovaskulární nemoci * prevence a kontrola MeSH
- klinické laboratorní techniky MeSH
- kreatin krev MeSH
- lidé MeSH
- proteiny vázající mastné kyseliny * krev MeSH
- průřezové studie MeSH
- reprodukovatelnost výsledků MeSH
- rizikové faktory MeSH
- rodina MeSH
- sérum chemie MeSH
- sexuální faktory MeSH
- statistika jako téma MeSH
- tělesné váhy a míry MeSH
- věkové faktory MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
svazky
- MeSH
- biologie buňky MeSH
- metabolismus MeSH
- tuková tkáň MeSH
- tukové buňky * MeSH
- Publikační typ
- periodika MeSH
- Konspekt
- Fyziologie člověka a srovnávací fyziologie
- NLK Obory
- vnitřní lékařství
- MeSH
- diabetes mellitus MeSH
- finanční podpora výzkumu jako téma MeSH
- hormony farmakologie fyziologie krev MeSH
- inzulinová rezistence MeSH
- lidé MeSH
- modely u zvířat MeSH
- molekulární struktura MeSH
- myši MeSH
- obezita etiologie MeSH
- tuková tkáň fyziologie sekrece MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- myši MeSH
- zvířata MeSH
- Publikační typ
- přehledy MeSH
- srovnávací studie MeSH
309 s. : il.
- Konspekt
- Fyziologie člověka a srovnávací fyziologie
- NLK Obory
- vnitřní lékařství
Serum adipocyte fatty acid-binding protein (FABP-4) concentrations are linked to human obesity and other features of metabolic syndrome. Patients with Cushing´s syndrome (CS) develop numerous features of metabolic syndrome due to chronic cortisol excess. Here we tested the hypothesis that chronically increased cortisol levels in CS patients may alter circulating levels of FABP-4. Fourteen patients with CS, 19 patients with simple obesity (OB) and 36 healthy control subjects (C) were included in the study. Serum FABP-4 concentrations were significantly higher in both CS and OB patients relative to C group, but they did not differ between CS and OB groups. In a combined population of all groups, serum FABP-4 levels correlated positively with BMI, body fat content, serum glucose, triglycerides, HbA1c and HOMA index and were inversely related to HDL-cholesterol, resting energy expenditure and freeT3 levels. We conclude that FABP-4 levels are significantly increased in both patients with simple obesity and obese patients with Cushing´s syndrome. We suggest that increased FABP-4 concentrations in CS patients are rather due to their excessive fat accumulation and related metabolic abnormalities than due to a direct effect of cortisol on FABP-4 production.
OBJECTIVE: Crosstalk between adipocytes and local neurons may be an important regulatory mechanism to control energy homeostasis. We previously reported that perturbation of adipocyte de novo lipogenesis (DNL) by deletion of fatty acid synthase (FASN) expands sympathetic neurons within white adipose tissue (WAT) and stimulates the appearance of "beige" adipocytes. Here we tested whether WAT DNL activity can also influence neuronal regulation and thermogenesis in brown adipose tissue (BAT). METHODS AND RESULTS: Induced deletion of FASN in all adipocytes in mature mice (iAdFASNKO) enhanced sympathetic innervation and neuronal activity as well as UCP1 expression in both WAT and BAT. This increased sympathetic innervation could be observed at both 22 °C and 30 °C, indicating it is not a response to heat loss but rather adipocyte signaling. In contrast, selective ablation of FASN in brown adipocytes of mice (iUCP1FASNKO) failed to modulate sympathetic innervation and the thermogenic program in BAT. Surprisingly, DNL in brown adipocytes was also dispensable in maintaining euthermia when UCP1FASNKO mice were cold-exposed. CONCLUSION: These results indicate that DNL in white adipocytes influences long distance signaling to BAT, which can modify BAT sympathetic innervation and expression of genes involved in thermogenesis.
- MeSH
- adipozita MeSH
- béžové tukové buňky metabolismus MeSH
- bílá tuková tkáň metabolismus MeSH
- bílé tukové buňky metabolismus MeSH
- hnědá tuková tkáň metabolismus MeSH
- hnědé tukové buňky metabolismus MeSH
- lipogeneze MeSH
- myši MeSH
- neurony metabolismus MeSH
- obezita metabolismus MeSH
- signální transdukce MeSH
- syntázy mastných kyselin MeSH
- synthasa mastných kyselin, typ I genetika metabolismus MeSH
- termogeneze MeSH
- termoregulace MeSH
- zvířata MeSH
- Check Tag
- mužské pohlaví MeSH
- myši MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Research Support, N.I.H., Extramural MeSH
Aim of the study: The aim was to perform a morphometric analysis of subcutaneous and visceral adipose tissue of morbidly obese women and to determine the relationship between adipocyte size and the development of type 2 diabetes (T2D). Materials and methods: White adipose tissue of morbidly obese women was obtained from subcutaneous and omental adipose tissue during bariatric surgery. The same tissues were obtained at judicial autopsy in non-obese (lean) non-diabetic patients. The harvested tissue was embedded in paraffin and 5 μm thick hematoxylin-eosin stained sections were analyzed by the Olympus cellSens system. Statistical evaluation was performed by GraphPad Prism 6.1 software. Results: We found a relationship between adipocyte size and the presence of T2D. The most pronounced changes were seen in visceral adipocytes (cell diameter increased from 61.9 μm in controls to 79.5 μm in patients with T2D). Also, the size of the subcutaneous adipocytes increased against the control. A statistically significant difference between diabetic and non-diabetic patients was not proven in subcutaneous adipocytes. We also observed differences in the distribution of adipocyte mean diameters. Whilst in the control group there was a normal (Gaussian) distribution, in the morbidly obese we found an asymmetric distribution with a positive skewness to the right. Conclusion: We have demonstrated that in morbidly obese women a significant increase in visceral adipocyte size is associated with the development of both insulin resistance and T2D.
- MeSH
- bílé tukové buňky cytologie MeSH
- diabetes mellitus 2. typu patofyziologie MeSH
- dospělí MeSH
- lidé MeSH
- morbidní obezita * chirurgie patofyziologie MeSH
- nitrobřišní tuk cytologie MeSH
- podkožní břišní tuk cytologie patofyziologie MeSH
- tukové buňky cytologie MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- ženské pohlaví MeSH
- Publikační typ
- práce podpořená grantem MeSH
BACKGROUND: Adipocyte-fatty acid binding protein (A-FABP) is a circulating protein expressed in adipocytes and macrophages. Several recent studies demonstrated that A-FABP might be involved in the pathogenesis of metabolic syndrome, particularly in dyslipidaemia, insulin resistance and atherosclerosis. The aim of this study was to investigate the influence of atorvastatin treatment (20 mg day(-1) for 3 months) on serum A-FABP value in subjects with hyperlipidaemia. MATERIALS AND METHODS: Anthropometric and serum analyses were performed for body mass index, A-FABP, triglycerides, total cholesterol, high-density lipoprotein (HDL) cholesterol, low-density lipoprotein (LDL) cholesterol, uric acid, alanine aminotransferase (ALT), aspartate aminotransferase (AST), high sensitive C-reactive protein (hs-CRP), creatine kinase (CK) and glucose on 26 subjects (BMI 30.3 +/- 6.0, mean age 62 +/- 10 years) with hyperlipidaemia who met the criteria: total cholesterol > 5.2 mmol L(-1), LDL cholesterol > 3.3 mmol L(-1) and triglycerides < 3 mmol L(-1). RESULTS: After the 3-month therapy, a significant reduction in total cholesterol (P < 0.001), LDL cholesterol (P < 0.001), glucose (P < 0.001), A-FABP (from 44.6 +/- 26.2 to 38.6 +/- 19.3 g L(-1), P < 0.01), uric acid (P < 0.05), AST (P < 0.05) and triglycerides (P < 0.05) values was observed. No difference was found in BMI, CK, ALT, hs-CRP, or HDL cholesterol values. A significant difference in the serum A-FABP value before and after the therapy remains after the correction for total cholesterol value (P < 0.001). A positive correlation between serum A-FABP and glucose was found (P < 0.05). CONCLUSIONS: In conclusion, our study confirmed in vivo that atorvastatin reduces serum A-FABP by a pleiotropic mechanism and supports the hypothesis that A-FABP is involved in atherosclerotic actions.
- MeSH
- anticholesteremika terapeutické užití MeSH
- cholesterol krev MeSH
- hyperlipidemie farmakoterapie MeSH
- index tělesné hmotnosti MeSH
- kyseliny heptylové terapeutické užití MeSH
- lidé středního věku MeSH
- lidé MeSH
- metabolický syndrom farmakoterapie MeSH
- prospektivní studie MeSH
- proteiny vázající mastné kyseliny účinky léků MeSH
- pyrroly terapeutické užití MeSH
- senioři MeSH
- tukové buňky účinky léků MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH