scholarly journals Sulfur-Containing Amino Acids and Lipid Metabolism

2020 ◽  
Vol 150 (Supplement_1) ◽  
pp. 2524S-2531S ◽  
Author(s):  
Francois Blachier ◽  
Mireille Andriamihaja ◽  
Anne Blais
Keyword(s):  
Amino Acids ◽  
Lipid Metabolism ◽  
Cardiovascular Diseases ◽  
Animal Models ◽  
Redox Homeostasis ◽  
Hdl Cholesterol ◽  
The Body ◽  
Amino Acid Requirement ◽  
Body Tissues ◽  
Increased Risk

ABSTRACT The metabolism of methionine and cysteine in the body tissues determines the concentrations of several metabolites with various biologic activities, including homocysteine, hydrogen sulfide (H2S), taurine, and glutathione. Hyperhomocysteinemia, which is correlated with lower HDL cholesterol in blood in volunteers and animal models, has been associated with an increased risk for cardiovascular diseases. In humans, the relation between methionine intake and hyperhomocysteinemia is dependent on vitamin status (vitamins B-6 and B-12 and folic acid) and on the supply of other amino acids. However, lowering homocysteinemia by itself is not sufficient for decreasing the risk of cardiovascular disease progression. Other compounds related to methionine metabolism have recently been identified as being involved in the risk of atherosclerosis and steatohepatitis. Indeed, the metabolism of sulfur amino acids has an impact on phosphatidylcholine (PC) metabolism, and anomalies in PC synthesis due to global hypomethylation have been associated with disturbances of lipid metabolism. In addition, impairment of H2S synthesis from cysteine favors atherosclerosis and steatosis in animal models. The effects of taurine on lipid metabolism appear heterogeneous depending on the populations of volunteers studied. A decrease in the concentration of intracellular glutathione, a tripeptide involved in redox homeostasis, is implicated in the etiology of cardiovascular diseases and steatosis. Last, supplementation with betaine, a compound that allows remethylation of homocysteine to methionine, decreases basal and methionine-stimulated homocysteinemia; however, it adversely increases plasma total and LDL cholesterol. The study of these metabolites may help determine the range of optimal and safe intakes of methionine and cysteine in dietary proteins and supplements. The amino acid requirement for protein synthesis in different situations and for optimal production of intracellular compounds involved in the regulation of lipid metabolism also needs to be considered for dietary attenuation of atherosclerosis and steatosis risk.

scholarly journals Penambahan Lisin pada Pakan Komersial terhadap Retensi Protein dan Retensi Energi Ikan Bawal Air Tawar (Colossoma macropomum) [Lysine Addition on Commercial Feed to the Protein Retention and Energy Retention Colossoma macropomum]

2017 ◽  
Vol 9 (2) ◽  
pp. 98 ◽  
Author(s):  
Afifa Khalida ◽  
Agustono Agustono ◽  
Widya Paramita
Keyword(s):  
Amino Acids ◽  
Essential Amino Acids ◽  
Quality Parameters ◽  
The Body ◽  
Colossoma Macropomum ◽  
Protein Retention ◽  
Body Tissues ◽  
Commercial Feed ◽  
Energy Retention ◽  
Range Test

                                                                   AbstrakAsam amino adalah komponen terkecil yang menyusun protein. Sejumlah asam amino akan dihubungkan satu sama lain melalui perantara ikatan peptida untuk membentuk protein. Asam amino telah dibagi menjadi dua; yaitu asam amino esensial dan asam amino non-esensial. Asam amino esensial adalah asam amino yang tidak dapat disintesis oleh tubuh ikan; karena itu asam amino esensial harus ada dalam pakan. Lisin adalah salah satu dari sepuluh asam amino esensial, fungsi lisin adalah untuk pertumbuhan dan perbaikan jaringan tubuh. Penelitian ini bertujuan untuk mengetahui pengaruh lisin dalam pakan komersial terhadap retensi protein dan retensi energi ikan bawal air tawar. Metode yang digunakan adalah desain eksperimen rancangan acak lengkap. Perlakuan yang digunakan adalah kadar lisin yang berbeda, yaitu P0 (0%), P1 (0,6%), P2 (1,2%), P3 (2,4%), P4 (4,8%) dan perlakuan  diulang 4 kali. Parameter utama yang diamati adalah retensi protein dan retensi energi pada air tawar bawal. Parameter yang diukur didukung oleh parameter kualitas air. Analisis data menggunakan Analisis Varian (ANOVA) dan untuk menentukan perlakuan terbaik digunakan Duncan's multiple range test. Hasil penelitian menunjukkan perbedaan yang signifikan (p <0,05) dalam retensi protein dan energi adalah daging ikan bawal air tawar. Retensi protein dan retensi energi dalam pengobatan P1 (0,6% lisin), P2 (1,2% lisin), P3 (2,4% lisin) dan P4 (4,8% lisin) berbeda secara signifikan dengan perlakuan P0 (kontrol). Kualitas air selama 40 hari perlakuan ditetapkan pada suhu 27-300 C, pH 7,5-8,5, amonia 4 mg / l dan oksigen terlarut 4 mg / l.                                                                 AbstractAmino acids are the smallest components that compose proteins. A number of amino acids will be conducted to one another through the intermediary of peptide bonds to form proteins. Amino acids have divided into two; those are essential amino acids and non-essential amino acids. The essential amino acids are amino acids that can not be synthesized by the body of fish; therefore the essential amino acids must be in feed. Lysine is one of the ten essentials amino acids , the function of lysine are for the growth and repair body tissues. This research was aimed to determine the effect of lysine in commercial feed on protein retention and energy retention of freshwater Bawal.The method used is experiment with a completely randomized design as an experimental design. The treatment used is different lysine levels , namely P0 ( 0 % ) , P1 ( 0.6 % ) , P2 ( 1.2 % ) , P3 ( 2.4 % ) , P4 (4.8 % ) and treatment was repeated 4 times. The main parameters were observed protein retention and energy retention on Bawal fresh water. Parameters measured were supported by water quality parameters. Analysis of the data using Analysis of Varian ( ANOVA ) and to determine the best treatment used Duncan 's multiple range test. The results showed the significant differences ( p < 0.05 ) in protein retention and energy were freshwater pomfret fish meat. Retention of protein and energy retention in treatment P1 ( 0.6 % lysine ) , P2 ( 1.2 % lysine ) , P3 ( 2.4 % lysine ) and P4 ( 4.8 % lysine ) was significantly different with treatment P0 ( control ). The quality of water for 40 days treatment was set to temperature 27-300 C, pH 7.5-8.5, ammonia 4 mg/l and dissolved oxygen 4 mg/l.

Utilisation of the end products of ruminant digestion

1957 ◽  
Vol 1957 ◽  
pp. 3-15 ◽  
Author(s):  
D. G. Armstrong ◽  
K. L. Blaxter ◽  
N. McC. Graham
Keyword(s):  
Amino Acids ◽  
Fatty Acids ◽  
Quantitative Data ◽  
Volatile Fatty Acids ◽  
Energy Requirement ◽  
The Body ◽  
Energy Requirements ◽  
Dietary Carbohydrate ◽  
Body Tissues ◽  
End Products

The work of the late Sir Joseph Barcroft and his collaborators (see Elsden & Phillipson, 1948) left little doubt that, in ruminants, the end products of the bacterial dissimilation of dietary carbohydrate included large amounts of the steam-volatile fatty acids—acetic, propionic and butyric acids. More recently, el Shazly (1952a, b) has shown that the steam-volatile fatty acids also arise together with ammonia during the bacterial breakdown of amino-acids in the rumen. Studies by Pfander & Phillipson (1953) and Schambye (1955) further indicate that the acids are absorbed from the digestive tract in amounts that suggest they make a major contribution to the energy requirement of the animal. Quantitative data relative to the amounts absorbed, however, are difficult to obtain. Carroll & Hungate (1954) have calculated that in cattle some 6,000-12,000 Cal. of energy are available from the acids produced by fermentation in the rumen. With sheep, Phillipson & Cuthbertson (1956) have calculated from the results of Schambye (1951a, b; 1955) that at least 600-1,200 Cal. of energy in the form of steam-volatile fatty acids could be absorbed every 24 hrs. Since the fasting heat production of the steer is about 6,500 Cal./24 hrs. and that of the sheep about 1,100 Cal./24 hrs. it is clear that if the fatty acids can be utilised efficiently by the body tissues, they could make a major contribution to the energy requirements, at least those for maintenance.

scholarly journals Serum ferritin contributes to racial or geographic disparities in metabolic syndrome in Taiwan

2013 ◽  
Vol 17 (7) ◽  
pp. 1498-1506 ◽  
Author(s):  
Jung-Su Chang ◽  
Shiue-Ming Lin ◽  
Jane C-J Chao ◽  
Yi-Chun Chen ◽  
Chi-Mei Wang ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Indigenous People ◽  
Racial Differences ◽  
Serum Ferritin ◽  
Hdl Cholesterol ◽  
Han Chinese ◽  
The Body ◽  
Cross Sectional ◽  
Geographic Disparities ◽  
Increased Risk

AbstractObjectivesAsians and Pacific Islanders have higher circulating serum ferritin (SF) compared with Caucasians but the clinical significance of this is unclear. There is a higher prevalence of metabolic syndrome (MetS) in Taiwanese Indigenous than Han Chinese. Genetically, Indigenous are related to Austronesians and account for 2 % of Taiwan's population. We tested the hypothesis that accumulation of Fe in the body contributes to the ethnic/racial disparities in MetS in Taiwan.DesignA population-based, cross-sectional study.SettingNational Nutrition and Health Survey in Taiwan and Penghu Island.SubjectsA total of 2638 healthy adults aged ≥19 years. Three ethnic groups were included.ResultsHan Chinese and Indigenous people had comparable levels of SF. Austronesia origin was independently associated with MetS (OR = 2·61, 95 % CI 2·02, 3·36). After multiple adjustments, the odds for MetS (OR = 2·49, 95 % CI 1·15, 5·28) was significantly higher among Indigenous people in the highest SF tertile compared with those in the lowest tertile. Hakka and Penghu Islanders yielded the lowest risks (OR = 1·08, 95 % CI 0·44, 2·65 and OR = 1·21, 95 % CI 0·52, 2·78, respectively). Indigenous people in the highest SF tertile had increased risk for abnormal levels of fasting glucose (OR = 2·34, 95 % CI 1·27, 4·29), TAG (OR = 1·94, 95 % CI 1·11, 3·39) and HDL-cholesterol (OR = 2·10, 95 % CI 1·18, 3·73) than those in the lowest SF tertile.ConclusionsOur results raise the possibility that ethnic/racial differences in body Fe store susceptibility may contribute to racial and geographic disparities in MetS.

scholarly journals PREMATURE OVARIAN FAILURE, ITS CONSEQUENCES, MORTALITY AND IMPACT ON THE CARDIOVASCULAR SYSTEM

2021 ◽  
Vol 9 (1) ◽  
pp. 147-156
Author(s):  
S.V. Lopukhov ◽  
◽  
E.V. Filippov ◽  
Keyword(s):  
Cardiovascular Diseases ◽  
Premature Ovarian Failure ◽  
Correct Diagnosis ◽  
Vascular Diseases ◽  
Ovarian Failure ◽  
Pharmacological Therapy ◽  
The Body ◽  
Risk Of Death ◽  
Increased Risk

This review focuses on the topic of premature ovarian failure (POF) as highly relevant in modern medicine (up to 2% of women in the population suffer from this disease). However, patients with premature ovarian failure not only are still not receiving any treatment, but even making this diagnosis is very difficult. Even after a correct diagnosis is made, these patients are not followed up, despite the fact they have already developed a hormonal imbalance. These women develop two groups of complications: short-term complications associated with a rapid estrogen deficiency in the body, and much more dangerous long-term complications affecting multiple organs and even systems. But in the meanwhile, women with premature ovarian failure are under increased risk of death from all causes, in particular from coronary heart disease (CHD), respiratory diseases, genitourinary diseases and from external causes. And this is despite the fact that cardio-vascular diseases (CVD) are already the leading cause of death among women worldwide. It is women with POF that are at the highest risk of development of cardiovascular diseases, compared to women with normal menopause. These patients, therefore, constitute one of the most important groups to be targeted by screening and prevention strategies primarily for cardiovascular diseases. These strategies should include the use of risk stratification tools to identify women that need lifestyle modifying and pharmacological therapy to prevent development of such diseases in them. This is the only way to maintain a high quality of life in these women over the long term.

scholarly journals Absorptive transport of amino acids by the rat colon

2020 ◽  
Vol 318 (1) ◽  
pp. G189-G202 ◽  
Author(s):  
Yuxin Chen ◽  
Meredith M. Dinges ◽  
Andrew Green ◽  
Scott E. Cramer ◽  
Cynthia K. Larive ◽  
...  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Ussing Chamber ◽  
Proximal Colon ◽  
The Body ◽  
Rat Colon ◽  
Colonic Epithelium ◽  
Specific Expression ◽  
Detailed Model ◽  
Body Tissues

The capacity of the colon to absorb microbially produced amino acids (AAs) and the underlying mechanisms of AA transport are incompletely defined. We measured the profile of 16 fecal AAs along the rat ceco-colonic axis and compared unidirectional absorptive AA fluxes across mucosal tissues isolated from the rat jejunum, cecum, and proximal colon using an Ussing chamber approach, in conjunction with 1H-NMR and ultra-performance liquid chromatography-mass spectrometry chemical analyses. Passage of stool from cecum to midcolon was associated with segment-specific changes in fecal AA composition and a decrease in total AA content. Simultaneous measurement of up to 16 AA fluxes under native luminal conditions, with correction for endogenous AA release, demonstrated absorptive transfer of AAs across the cecum and proximal colon at rates comparable (30–80%) to those across the jejunum, with significant Na+-dependent and H+-stimulated components. Expression profiling of 30 major AA transporter genes by quantitative PCR revealed comparatively high levels of transcripts for 20 AA transporters in the cecum and/or colon, with the levels of 12 exceeding those in the small intestine. Our results suggest a more detailed model of major apical and basolateral AA transporters in rat colonocytes and provide evidence for a previously unappreciated transfer of AAs across the colonic epithelium that could link the prodigious metabolic capacities of the luminal microbiota, the colonocytes, and the body tissues. NEW & NOTEWORTHY This study provides evidence for a previously unappreciated transfer of microbially generated amino acids across the colonic epithelium under physiological conditions that could link the prodigious metabolic capacities of the luminal microbiota, the colonocytes, and the body tissues. The segment-specific expression of at least 20 amino acid transporter genes along the colon provides a detailed mechanistic basis for uniport, heteroexchange, Na+-cotransport, and H+-cotransport components of colonic amino acid absorption.

scholarly journals A case of Psoriasis with an increase in HDL cholesterol

2014 ◽  
Vol 13 (4) ◽  
pp. 470-472
Author(s):  
Booloo Sharma ◽  
Devajit Sarmah
Keyword(s):  
Lipid Metabolism ◽  
Cardiovascular Diseases ◽  
Lipid Content ◽  
Skin Infection ◽  
Medical Science ◽  
Hdl Cholesterol ◽  
Vldl Cholesterol ◽  
Immune Mediated ◽  
Chronic Skin ◽  
Abnormal Lipid Metabolism

Psoriasis is an immune mediated chronic skin infection which is often associated with an abnormal lipid metabolism. Studies have proved that the abnormality in lipid profile is manifested by an increase in total cholesterol, LDL and VLDL cholesterol and a decrease in HDL cholesterol. The present case of psoriasis presents with an increased HDL cholesterol. Various studies have shown the alteration in size and number of HDL lipoproteins in psoriasis which hampers the normal efflux function of HDL lipoproteins. These HDL also have a significant alteration in protein and lipid content. These small and altered HDLs are more atherogenic and thereby increase the risk of cardiovascular diseases in such psoriatic patients. DOI: http://dx.doi.org/10.3329/bjms.v13i4.16261 Bangladesh Journal of Medical Science Vol.13(4) 2014 p.470-472

scholarly journals Effect of Walnut Meal Peptides on Hyperlipidemia and Hepatic Lipid Metabolism in Rats Fed a High-Fat Diet

Nutrients ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 1410
Author(s):  
Xiao-Yue Yang ◽  
Di-Ying Zhong ◽  
Guo-Liang Wang ◽  
Run-Guang Zhang ◽  
You-Lin Zhang
Keyword(s):  
Lipid Metabolism ◽  
High Fat Diet ◽  
Hdl Cholesterol ◽  
Blood Lipid ◽  
The Body ◽  
Liver Fat ◽  
High Fat ◽  
Apo B ◽  
Expression Of Genes ◽  
Triglyceride Content

As a natural active substance that can effectively improve blood lipid balance in the body, hypolipidemic active peptides have attracted the attention of scholars. In this study, the effect of walnut meal peptides (WMP) on lipid metabolism was investigated in rats fed a high-fat diet (HFD). The experimental results show that feeding walnut meal peptides counteracted the high-fat diet-induced increase in body, liver and epididymal fat weight, and reduce the serum concentrations of total cholesterol, triglycerides, and LDL-cholesterol and hepatic cholesterol and triglyceride content. Walnut meal peptides also resulted in increased HDL-cholesterol while reducing the atherosclerosis index (AI). Additionally, the stained pathological sections of the liver showed that the walnut meal peptides reduced hepatic steatosis and damage caused by HFD. Furthermore, walnut meal peptide supplementation was associated with normalization of elevated apolipoprotein (Apo)-B and reduced Apo-A1 induced by the high-fat diet and with favorable changes in the expression of genes related to lipid metabolism (LCAT, CYP7A1, HMGR, FAS). The results indicate that walnut meal peptides can effectively prevent the harmful effects of a high-fat diet on body weight, lipid metabolism and liver fat content in rats, and provide, and provide a reference for the further development of walnut meal functional foods.

scholarly journals Coagulatory Defects in Type-1 and Type-2 Diabetes

2019 ◽  
Vol 20 (24) ◽  
pp. 6345 ◽  
Author(s):  
Amélie I. S. Sobczak ◽  
Alan J. Stewart
Keyword(s):  
Type 2 Diabetes ◽  
Lipid Metabolism ◽  
Cardiovascular Diseases ◽  
Metal Ion ◽  
Ion Homeostasis ◽  
Physiological Changes ◽  
Metal Ion Homeostasis ◽  
Increased Risk

Diabetes (both type-1 and type-2) affects millions of individuals worldwide. A major cause of death for individuals with diabetes is cardiovascular diseases, in part since both types of diabetes lead to physiological changes that affect haemostasis. Those changes include altered concentrations of coagulatory proteins, hyper-activation of platelets, changes in metal ion homeostasis, alterations in lipid metabolism (leading to lipotoxicity in the heart and atherosclerosis), the presence of pro-coagulatory microparticles and endothelial dysfunction. In this review, we explore the different mechanisms by which diabetes leads to an increased risk of developing coagulatory disorders and how this differs between type-1 and type-2 diabetes.

scholarly journals METABOLISM OF HOMOCYSTEIN AND GLUTATHIONE IN ERYTHROCYTES IN HYPOTHERMAL STORAGE

2019 ◽  
Vol 19 (1) ◽  
pp. 115-118
Author(s):  
V.V. Ramazanov ◽  
E.L. Volovelskaya ◽  
S.V. Rudenko ◽  
A.Yu. Semenchenko ◽  
V.A. Bondarenko
Keyword(s):  
Oxidative Stress ◽  
Amino Acids ◽  
Red Blood Cells ◽  
Blood Cells ◽  
Redox Homeostasis ◽  
The Body ◽  
Antioxidant Potential ◽  
Vascular Pathology ◽  
Hemoglobin Oxidation ◽  
Stimulation Of

When hypothermic storage of red blood cellsб there is a decrease in the level of glutathione and an increase in the concentration of homocysteine, at the same time, inclusion in the medium of substrate amino-acids of the synthesis of glutathione activates the utilization of this cytotoxin. Moreover, stimulation of the synthesis of glutathione reduces the loss of membrane proteins and lowers the intensity of hemoglobin oxidation that ensures the preservation of the osmotic stability of erythrocytes. Red blood cells as a component of the body redox homeostasis absorb and neutralize reactive oxygen and nitrogen species, which normally determine a certain antioxidant potential and are not enough to maintain the structural and functional state of red blood cells after isolation from donor blood and storage. Oxidative stress in cells, including red blood cells, in various pathologies usually causes a decrease in the level of glutathione and an impairment of its synthesis that leads to an increase in the production of homocysteine ​​and its entry into the blood plasma. Homocysteine ​​is a cytotoxic amino acid that enhances the production of superoxide, limits the bioavailability of nitric oxide and causes the development of vascular pathology. The data presented in the review indicate that stimulation of the antioxidant potential of erythrocytes during the storage may prevent the development of oxidative stress and inflammation during subsequent transfusion. In addition, the preservation of the viability indicators of various cells during cryopreservation in a medium with substrate amino-acids shows that stimulation of the antioxidant potential contributes to an increase in the cell resistance to the damaging factors of freeze-thawing.

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