scholarly journals Physiological Functions of iso-type Short-Chain Fatty Acid and Omega 3 Polyunsaturated Fatty Acids Containing Oil in Obese OLETF Rats

2010 ◽  
Vol 59 (6) ◽  
pp. 299-305 ◽  
Author(s):  
Bungo Shirouchi ◽  
Koji Nagao ◽  
Kenta Furuya ◽  
Toshiharu Nagai ◽  
Kenji Ichioka ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acids ◽  
Short Chain Fatty Acid ◽  
Chain Fatty Acid ◽  
Short Chain ◽  
Omega 3 ◽  
Physiological Functions ◽  
Oletf Rats

scholarly journals Chemical Labeling Assisted Detection and Identification of Short Chain Fatty Acid Esters of Hydroxy Fatty Acid in Rat Colon and Cecum Contents

Metabolites ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 398 ◽  
Author(s):  
Siddabasave Gowda B. Gowda ◽  
Divyavani Gowda ◽  
Chongsheng Liang ◽  
Yonghan Li ◽  
Kentaro Kawakami ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Short Chain Fatty Acid ◽  
Chain Fatty Acid ◽  
Hydroxy Fatty Acids ◽  
Fatty Acid Esters ◽  
Short Chain ◽  
Rat Colon ◽  
Physiological Functions ◽  
Acid Esters

Branched fatty acid esters of hydroxy fatty acids (FAHFAs) are novel endogenous lipids with important physiological functions in mammals. We previously identified a new type of FAHFAs, named short-chain fatty acid esterified hydroxy fatty acids (SFAHFAs), with acetyl or propyl esters of hydroxy fatty acids of carbon chains, C ≥ 20. However, sensitive determination of SFAHFAs is still a challenge, due to their high structural similarity and low abundance in biological samples. This study employs one-step chemical derivatization following total lipid extraction using 2-dimethylaminoethylamine (DMED) for enhanced detection of SFAHFAs. The labeled extracts were subjected to ultrahigh performance liquid chromatography coupled to linear ion trap quadrupole-Orbitrap mass spectrometry (UHPLC/LTQ-Orbitrap MS). Our results demonstrated that the detection sensitivities of SFAHFAs increased after DMED labeling, and is highly helpful in discovering six additional novel SFAHFAs in the cecum and colon contents of WKAH/HKmSlc rats fed with normal and high-fat diet (HFD). The identified DMED labeled SFAHFAs were characterized by their detailed MS/MS analysis, and their plausible fragmentation patterns were proposed. The concentrations of SFAHFAs were significantly reduced in the cecum of HFD group compared to the control. Hence, the proposed method could be a promising tool to apply for the enhanced detection of SFAHFAs in various biological matrices, which in turn facilitate the understanding of their sources, and physiological functions of these novel lipids.

scholarly journals Clinical translation of 18F-fluoropivalate – a PET tracer for imaging short-chain fatty acid metabolism: safety, biodistribution, and dosimetry in fed and fasted healthy volunteers

2020 ◽  
Vol 47 (11) ◽  
pp. 2549-2561 ◽  
Author(s):  
Suraiya R. Dubash ◽  
Nicholas Keat ◽  
Kasia Kozlowski ◽  
Chris Barnes ◽  
Louis Allott ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Healthy Volunteers ◽  
Effective Dose ◽  
Short Chain Fatty Acid ◽  
Safety Data ◽  
Chain Fatty Acid ◽  
Short Chain ◽  
Whole Body ◽  
Residence Times

Abstract Background Fatty acids derived de novo or taken up from the extracellular space are an essential source of nutrient for cell growth and proliferation. Radiopharmaceuticals including 11C-acetate, and 18F-FAC (2-18F-fluoroacetate), have previously been used to study short-chain fatty acid (SCFA) metabolism. We developed 18F-fluoropivalate (18F-FPIA; 3-18F-fluoro-2,2-dimethylpropionic acid) bearing a gem-dimethyl substituent to assert metabolic stability for studying SCFA metabolism. We report the safety, biodistribution, and internal radiation dosimetry profile of 18F-FPIA in 24 healthy volunteers and the effect of dietary conditions. Materials and methods Healthy volunteer male and female subjects were enrolled (n = 24), and grouped into 12 fed and 12 fasted. Non-esterified fatty acids (NEFA) and carnitine blood measurements were assessed. Subjects received 159.48 MBq (range, 47.31–164.66 MBq) of 18F-FPIA. Radiochemical purity was > 99%. Safety data were obtained during and 24 h after radiotracer administration. Subjects underwent detailed multiple whole-body PET/CT scanning with sampling of venous bloods for radioactivity and radioactive metabolite quantification. Regions of interest were defined to derive individual and mean organ residence times; effective dose was calculated using OLINDA 1.1. Results All subjects tolerated 18F-FPIA with no adverse events. Over 90% of radiotracer was present in plasma at 60 min post-injection. The organs receiving highest absorbed dose (in mGy/MBq) were the liver (0.070 ± 0.023), kidneys (0.043 ± 0.013), gallbladder wall (0.026 ± 0.003), and urinary bladder (0.021 ± 0.004); otherwise there was low tissue uptake. The calculated effective dose using mean organ residence times over all 24 subjects was 0.0154 mSv/MBq (SD ± 0.0010). No differences in biodistribution or dosimetry were seen in fed and fasted subjects, though systemic NEFA and carnitine levels reflected fasted and fed states. Conclusion The favourable safety, imaging, and dosimetric profile makes 18F-FPIA a promising candidate radiotracer for tracing SCFA metabolism.

scholarly journals Fecal Short-Chain Fatty Acid Concentrations Increase in Newly Paired Male Marmosets (Callithrix jacchus)

mSphere ◽  
2020 ◽  
Vol 5 (5) ◽  
Author(s):  
Lifeng Zhu ◽  
Mallory J. Suhr Van Haute ◽  
Haley R. Hassenstab ◽  
Caroline Smith ◽  
Devin J. Rose ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Gut Microbiome ◽  
Short Chain Fatty Acid ◽  
Social Contact ◽  
Common Marmoset ◽  
Short Chain Fatty Acids ◽  
Chain Fatty Acid ◽  
Short Chain ◽  
Chain Fatty Acids

ABSTRACT The role by which the gut microbiome influences host health (e.g., energy equilibrium and immune system) may be partly mediated by short-chain fatty acids, which are bacterial fermentation products from the dietary fibers. However, little is known about longitudinal changes in gut microbiome metabolites during cohabitation alongside social contact. In common marmosets (Callithrix jacchus), the gut microbiome community is influenced by social contact, as newly paired males and females develop convergent microbial profiles. Here, we monitored the dynamics of short-chain fatty acid concentrations in common marmoset feces from the prepairing (PRE) to postpairing (POST) stages. In males, we observed that the concentrations of acetate, propionate, isobutyrate, and isovalerate significantly increased in the POST stage compared to the PRE stage. However, no significant changes were found in females. We further found that the propionate concentration was significantly positively correlated with the abundance of Phascolarctobacterium in the male feces. Thus, the sex difference in the changes in the concentrations of short-chain fatty acids might be related to sex-biased gut microbiome transmission after pairing. We suggest that the significant changes in the gut microbiomes and some short-chain fatty acids of the common marmoset during cohabitation may contribute to physiological homeostasis during pairing. IMPORTANCE This study addressed a knowledge gap about longitudinal changes in the gut microbiome metabolites during animal pairing. This research in the laboratory common marmoset can control for the confounding factors such as diet and other environmental conditions. Phascolarctobacterium showed the highest contribution to the sex-biased transmission of the female to the male after pairing. Here, we observed the sex difference in the increase in short-chain fatty acid concentration in the feces of newly paired marmosets, which may be caused by the sex-biased gut microbiome transmission after pairing.

scholarly journals Short-Chain Fatty Acids Reduced Renal Calcium Oxalate Stones by Regulating the Expression of Intestinal Oxalate Transporter SLC26A6

mSystems ◽  
2021 ◽  
Author(s):  
Yu Liu ◽  
Xi Jin ◽  
Yucheng Ma ◽  
Zhongyu Jian ◽  
Zhitao Wei ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Gut Microbiota ◽  
Calcium Oxalate ◽  
Renal Stone ◽  
Short Chain Fatty Acid ◽  
Short Chain Fatty Acids ◽  
Chain Fatty Acid ◽  
Short Chain ◽  
Healthy Controls

Some studies found that the relative abundances of short-chain-fatty-acid (SCFA)-producing bacteria were lower in the gut microbiota of renal stone patients than healthy controls. Our previous study demonstrated that SCFAs could reduce the formation of renal calcium oxalate (CaOx) stones, but the mechanism is still unknown.

Short-chain fatty acid propionate improved ventricular electrical remodeling in a rat model with myocardial infarction

2021 ◽  
Author(s):  
Ming-min Zhou ◽  
Di-wen Li ◽  
Ke Xie ◽  
Liao Xu ◽  
Bin Kong ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Fatty Acids ◽  
Fatty Acid ◽  
Short Chain Fatty Acid ◽  
Short Chain Fatty Acids ◽  
Chain Fatty Acid ◽  
Short Chain ◽  
Electrical Remodeling ◽  
Microbial Fermentation ◽  
Ventricular Electrical Remodeling

Short-chain fatty acids (SCFAs) propionate (C3), a microorganism metabolite produced by gut microbial fermentation, have parasympathetic-activated effects. Cardiac autonomic rebalancing strategy was considered as an important therapeutic approach to myocardial...

scholarly journals Short-Chain Fatty Acid Acetate Stimulates Adipogenesis and Mitochondrial Biogenesis via GPR43 in Brown Adipocytes

Endocrinology ◽  
2016 ◽  
Vol 157 (5) ◽  
pp. 1881-1894 ◽  
Author(s):  
Jiamiao Hu ◽  
Ioannis Kyrou ◽  
Bee K. Tan ◽  
Georgios K. Dimitriadis ◽  
Manjunath Ramanjaneya ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
G Protein ◽  
Mitochondrial Biogenesis ◽  
Short Chain Fatty Acid ◽  
Short Chain Fatty Acids ◽  
Chain Fatty Acid ◽  
Short Chain ◽  
Brown Adipocytes ◽  
Mapk Kinase

Abstract Short-chain fatty acids play crucial roles in a range of physiological functions. However, the effects of short-chain fatty acids on brown adipose tissue have not been fully investigated. We examined the role of acetate, a short-chain fatty acid formed by fermentation in the gut, in the regulation of brown adipocyte metabolism. Our results show that acetate up-regulates adipocyte protein 2, peroxisomal proliferator-activated receptor-γ coactivator-1α, and uncoupling protein-1 expression and affects the morphological changes of brown adipocytes during adipogenesis. Moreover, an increase in mitochondrial biogenesis was observed after acetate treatment. Acetate also elicited the activation of ERK and cAMP response element-binding protein, and these responses were sensitive to G(i/o)-type G protein inactivator, Gβγ-subunit inhibitor, phospholipase C inhibitor, and MAPK kinase inhibitor, indicating a role for the G(i/o)βγ/phospholipase C/protein kinase C/MAPK kinase signaling pathway in these responses. These effects of acetate were mimicked by treatment with 4-chloro-α-(1-methylethyl)-N-2-thiazolylbenzeneacetamide, a synthetic G protein-coupled receptor 43 (GPR43) agonist and were impaired in GPR43 knockdown cells. Taken together, our results indicate that acetate may have important physiological roles in brown adipocytes through the activation of GPR43.

scholarly journals Novel insights into the genetically obese (ob/ob) and diabetic (db/db) mice: two sides of the same coin

Microbiome ◽  
2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Francesco Suriano ◽  
Sara Vieira-Silva ◽  
Gwen Falony ◽  
Martin Roumain ◽  
Adrien Paquot ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Bile Acid ◽  
Short Chain Fatty Acid ◽  
Short Chain Fatty Acids ◽  
Chain Fatty Acid ◽  
Short Chain ◽  
Microbiota Composition ◽  
Leptin Signaling ◽  
Gut Microbiota Composition

Abstract Background Leptin-deficient ob/ob mice and leptin receptor-deficient db/db mice are commonly used mice models mimicking the conditions of obesity and type 2 diabetes development. However, although ob/ob and db/db mice are similarly gaining weight and developing massive obesity, db/db mice are more diabetic than ob/ob mice. It remains still unclear why targeting the same pathway—leptin signaling—leads to the development of two different phenotypes. Given that gut microbes dialogue with the host via different metabolites (e.g., short-chain fatty acids) but also contribute to the regulation of bile acids metabolism, we investigated whether inflammatory markers, bacterial components, bile acids, short-chain fatty acids, and gut microbes could contribute to explain the specific phenotype discriminating the onset of an obese and/or a diabetic state in ob/ob and db/db mice. Results Six-week-old ob/ob and db/db mice were followed for 7 weeks; they had comparable body weight, fat mass, and lean mass gain, confirming their severely obese status. However, as expected, the glucose metabolism and the glucose-induced insulin secretion were significantly different between ob/ob and db/db mice. Strikingly, the fat distribution was different, with db/db mice having more subcutaneous and ob/ob mice having more epididymal fat. In addition, liver steatosis was more pronounced in the ob/ob mice than in db/db mice. We also found very distinct inflammatory profiles between ob/ob and db/db mice, with a more pronounced inflammatory tone in the liver for ob/ob mice as compared to a higher inflammatory tone in the (subcutaneous) adipose tissue for db/db mice. When analyzing the gut microbiota composition, we found that the quantity of 19 microbial taxa was in some way affected by the genotype. Furthermore, we also show that serum LPS concentration, hepatic bile acid content, and cecal short-chain fatty acid profiles were differently affected by the two genotypes. Conclusion Taken together, our results elucidate potential mechanisms implicated in the development of an obese or a diabetic state in two genetic models characterized by an altered leptin signaling. We propose that these differences could be linked to specific inflammatory tones, serum LPS concentration, bile acid metabolism, short-chain fatty acid profile, and gut microbiota composition.

scholarly journals Short-Chain Fatty Acid Propionate Alleviates Akt2 Knockout-Induced Myocardial Contractile Dysfunction

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Linlin Li ◽  
Yinan Hua ◽  
Jun Ren
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Membrane Potential ◽  
Mitochondrial Membrane ◽  
Short Chain Fatty Acid ◽  
Contractile Function ◽  
Short Chain Fatty Acids ◽  
Chain Fatty Acid ◽  
Short Chain

Background and Aims. Dysregulation of Akt has been implicated in diseases such as cancer and diabetes, although little is known about the role of Akt deficiency on cardiomyocyte contractile function. This study was designed to examine the effect of Akt2 knockout-induced cardiomyocyte contractile response and the effect of dietary supplementation of short-chain fatty acid propionate on Akt2 knockout-induced cardiac dysfunction, if any.Methods and Results. Adult male wild-type (WT) and Akt2 knockout mice were treated with propionate (0.3 g/kg, p.o.) or vehicle for 7 days. Oral glucose tolerance test (OGTT) was performed. Cardiomyocyte contractile function and mitochondrial membrane potential were assessed. Expression of insulin-signaling molecules Akt, PTEN, GSK3β, and eNOS receptors for short-chain fatty acids GPR41, and GPR43 as well as protein phosphatase PP2AA, PP2AB, PP2C were evaluated using Western blot analysis. Our results revealed that Akt2 knockout led to overt glucose intolerance, compromised cardiomyocyte contractile function (reduced peak shortening and maximal velocity of shortening/relengthening as well as prolonged relengthening), loss of mitochondrial membrane potential, decreased GPR41 and elevated GPR43 expression, all of which, with the exception of glucose intolerance and elevated GPR43 level, were significantly attenuated by propionate. Neither Akt2 knockout nor propionate affected the expression of protein phosphatases, eNOS, pan, and phosphorylated PTEN and GSK3β.Conclusions. Taken together, these data depicted that Akt2 knockout may elicit cardiomyocyte contractile and mitochondrial defects and a beneficial role of propionate or short-chain fatty acids against Akt2 deficiency-induced cardiac anomalies.

The production and short chain fatty acid composition of lipid from cashmere goat buck fleece

1996 ◽  
Vol 47 (4) ◽  
pp. 553 ◽  
Author(s):  
GC Hillbrick ◽  
DJ Tucker
Keyword(s):  
Fatty Acids ◽  
Gas Chromatography ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Short Chain Fatty Acid ◽  
Chain Fatty Acid ◽  
Short Chain ◽  
Cashmere Goat ◽  
Branched Fatty Acids

This study examined the lipid content and short chain fatty acid composition of fleece samples collected from Cashmere goat (Capra hircus laniger) bucks at various times throughout the year. Fleece samples from does and gonadectomised goats were also analysed at one time during the breeding season for comparison. Lipid was extracted with chloroform/methanol azeotrope, saponified, and analysed for short chain fatty acids (C2-Clo) by gas chromatography and gas chromatography/mass spectrometry. Bucks had increased amounts of lipid and ethyl-branched fatty acids in fleece samples shorn from March to September, compared with fleece samples shorn in November and January. The increases in the amounts of lipid and ethyl-branched fatty acids corresponded with the breeding season and the period when the buck odour was increased. This supports the assumption that ethyl-branched fatty acids may be a pheromone in goats.

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