ether lipids
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Journal de pharmacologie, ISSN 0021-793X tome 14, suppl. 1, 1983
XX, 104 s. : tab., grafy ; 24 cm
- MeSH
- faktor aktivující destičky farmakologie MeSH
- fosfolipidethery MeSH
- Publikační typ
- kongresy MeSH
- Konspekt
- Farmacie. Farmakologie
- NLK Obory
- farmacie a farmakologie
Progress in biochemical pharmacology ; vol. 22
195 s. : il.
- Klíčová slova
- ESTROFEM, PRESOMEN, OESTROFEMINAL, OVESTIN, ESTRADERM, AGOFOLIN, NEOGEST, PROVERA, MARVELON, CILEST, FENOVAR, NOLVADEX, LIVIAL,
- MeSH
- androgeny MeSH
- arterioskleróza etiologie farmakoterapie prevence a kontrola MeSH
- estrogenní substituční terapie MeSH
- kongenery progesteronu škodlivé účinky terapeutické užití MeSH
- lidé MeSH
- lipidy krev MeSH
- lipoproteiny krev metabolismus MeSH
- menopauza farmakoterapie komplikace MeSH
- mestranol MeSH
- metabolismus lipidů MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- přehledy MeSH
INTRODUCTION: Firefighting is one of the most hazardous occupations due to exposure to per- and polyfluoroalkyl substances (PFAS) and polycyclic aromatic hydrocarbons (PAHs). Such exposure is suspected to affect the cardiometabolic profile, e.g., liver function and serum lipids. However, only a few studies have investigated the impact of this specific exposure among firefighters. METHODS: Men included in the CELSPAC-FIREexpo study were professional firefighters (n = 52), newly recruited firefighters in training (n = 58), and controls (n = 54). They completed exposure questionnaires and provided 1-3 samples of urine and blood during the 11-week study period to allow assessment of their exposure to PFAS (6 compounds) and PAHs (6 compounds), and to determine biomarkers of liver function (alanine aminotransferase (ALT), gamma-glutamyl transferase (GGT), aspartate aminotransferase (AST), alkaline phosphatase (ALP) and total bilirubin (BIL)) and levels of serum lipids (total cholesterol (CHOL), low-density lipoprotein cholesterol (LDL) and triglycerides (TG)). The associations between biomarkers were investigated both cross-sectionally using multiple linear regression (MLR) and Bayesian weighted quantile sum (BWQS) regression and prospectively using MLR. The models were adjusted for potential confounders and false discovery rate correction was applied to account for multiplicity. RESULTS: A positive association between exposure to PFAS and PAH mixture and BIL (β = 28.6%, 95% CrI = 14.6-45.7%) was observed by the BWQS model. When the study population was stratified, in professional firefighters and controls the mixture showed a positive association with CHOL (β = 29.5%, CrI = 10.3-53.6%) and LDL (β = 26.7%, CrI = 8.3-48.5%). No statistically significant associations with individual compounds were detected using MLR. CONCLUSIONS: This study investigated the associations between exposure to PFAS and PAHs and biomarkers of cardiometabolic health in the Czech men, including firefighters. The results suggest that higher exposure to a mixture of these compounds is associated with an increase in BIL and the alteration of serum lipids, which can result in an unfavourable cardiometabolic profile.
- MeSH
- Bayesova věta MeSH
- biologické markery moč MeSH
- fluorokarbony * MeSH
- hasiči * MeSH
- játra chemie MeSH
- kardiovaskulární nemoci * MeSH
- lidé MeSH
- lipidy MeSH
- polycyklické aromatické uhlovodíky * moč MeSH
- pracovní expozice * analýza MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- MeSH
- arterioskleróza terapie MeSH
- fibrinolýza MeSH
- lidé MeSH
- lipidy krev MeSH
- minerální vody MeSH
- sulfidy MeSH
- trombocyty MeSH
- Check Tag
- lidé MeSH
- Geografické názvy
- Polsko MeSH
Handbook of immunopharmacology
[1st ed.] XV, 376 s. : obr., tab., grafy ; 25 cm
Lipids form a significant part of animal organs and they are responsible for important biological functions, such as semi-permeability and fluidity of membranes, signaling activity, anti-inflammatory processes, etc. We have performed a comprehensive nontargeted lipidomic characterization of porcine brain, heart, kidney, liver, lung, spinal cord, spleen, and stomach using hydrophilic interaction liquid chromatography (HILIC) coupled to electrospray ionization mass spectrometry (ESI/MS) to describe the representation of individual lipid classes in these organs. Detailed information on identified lipid species inside classes are obtained based on relative abundances of deprotonated molecules [M-H](-) in the negative-ion ESI mass spectra, which provides important knowledge on phosphatidylethanolamines and their different forms of fatty acyl linkage (ethers and plasmalogens), phosphatidylinositols, and hexosylceramides containing nonhydroxy- and hydroxy-fatty acyls. The detailed analysis of identified lipid classes using reversed-phase liquid chromatography in the second dimension was performed for porcine brain to determine more than 160 individual lipid species containing attached fatty acyls of different acyl chain length, double-bond number, and positions on the glycerol skeleton. The fatty acid composition of porcine organs is determined by gas chromatography with flame ionization detection after the transesterification with sodium methoxide.
- MeSH
- chromatografie kapalinová metody MeSH
- chromatografie plynová metody MeSH
- fosfatidylethanolaminy analýza MeSH
- fosfolipidy analýza MeSH
- hmotnostní spektrometrie s elektrosprejovou ionizací metody MeSH
- hydrofobní a hydrofilní interakce MeSH
- játra chemie MeSH
- ledviny chemie MeSH
- lipidy analýza chemie MeSH
- mastné kyseliny analýza MeSH
- mícha chemie MeSH
- mozek - chemie MeSH
- myokard chemie MeSH
- plasmalogeny analýza MeSH
- plíce chemie MeSH
- prasata MeSH
- slezina chemie MeSH
- žaludek chemie MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Most known lipid biomarkers were found by analysis of pure bacterial cultures in vitro. The practical impact of a biomarker including possible interferences should be tested in extensive research of target strains in real ecosystems. Phospholipid fatty acids identified in river sediments, activated sludge and waterworks sand filters correspond with those proposed previously as biomarkers typical of expected microorganisms. Two ether lipids regarded as specific biomarkers of the Archaea kingdom were identified in digested sludge from a sewage water plant.
Plasmalogens are a group of lipids mainly found in the cell membranes. They occur in anaerobic bacteria and in some protozoa, invertebrates and vertebrates, including humans. Their occurrence in plants and fungi is controversial. They can protect cells from damage by reactive oxygen species, protect other phospholipids or lipoprotein particles against oxidative stress, and have been implicated as signaling molecules and modulators of membrane dynamics. Biosynthesis in anaerobic and aerobic organisms occurs by different pathways, and the main biosynthetic pathway in anaerobic bacteria was clarified only this year (2021). Many different analytical techniques have been used for plasmalogen analysis, some of which are detailed below. These can be divided into two groups: shotgun lipidomics, or electrospray ionization mass spectrometry in combination with high performance liquid chromatography (LC-MS). The advantages and limitations of both techniques are discussed here, using examples from anaerobic bacteria to specialized mammalian (human) organs.
