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Carnosine

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https://www.readbyqxmd.com/read/28072830/protective-effects-of-dexrazoxane-against-doxorubicin-induced-cardiotoxicity-a-metabolomic-study
#1
Yang QuanJun, Yang GenJin, Wan LiLi, Han YongLong, Huo Yan, Li Jie, Huang JinLu, Lu Jin, Gan Run, Guo Cheng
Cardioprotection of dexrazoxane (DZR) against doxorubicin (DOX)-induced cardiotoxicity is contentious and the indicator is controversial. A pairwise comparative metabolomics approach was used to delineate the potential metabolic processes in the present study. Ninety-six BALB/c mice were randomly divided into two supergroups: tumor and control groups. Each supergroup was divided into control, DOX, DZR, and DOX plus DZR treatment groups. DOX treatment resulted in a steady increase in 5-hydroxylysine, 2-hydroxybutyrate, 2-oxoglutarate, 3-hydroxybutyrate, and decrease in glucose, glutamate, cysteine, acetone, methionine, asparate, isoleucine, and glycylproline...
2017: PloS One
https://www.readbyqxmd.com/read/28064502/one-pot-synthesis-of-amino-acid-based-polyelectrolytes-and-nanoparticle-synthesis
#2
Stefan Mommer, Helmut Keul, Martin Möller
In this manuscript, a biscyclic monomer with an epoxide and a thiolactone ring connected by a urethane bond is used for the synthesis of amino acid-functional polyelectrolytes. In a first step, lithium salts of amino acids react selectively with the thiolactone ring by ring-opening, formation of an amide bond, and a thiol group. In a second step and in the presence of a base a polymeric building block is formed by polyaddition of the thiolate to the epoxide ring. The reaction occurs at room temperature in water as solvent...
January 9, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28063211/nmr-metabolomics-investigates-the-influence-of-flavonoid-enriched-rations-on-chicken-plasma
#3
Charalambos Fotakis, Dimitra Z Lantzouraki, Michael Goliomytis, Panagiotis E Simitzis, Maria Charismiadou, Stelios G Deligeorgis, Panagiotis Zoumpoulakis
The use of flavonoids as dietary supplements is well established, mainly due to their intense antioxidant and anti-inflammatory properties. In the present study, hesperidin, naringin, and vitamin E were used as additives at different concentrations in poultry rations in order to achieve meat of improved quality. NMR metabolomics was applied to chicken blood serum samples to discern whether and how the enriched rations affected the animals’ metabolic profile. Variations in the metabolic patterns according to sustenance consumption were traced by orthogonal projections to latent structures discriminant analysis (OPLS-DA) models and were attributed to specific metabolites by using S-line plots...
January 7, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28052095/metabolomic-profiling-in-individuals-with-a-failing-kidney-allograft
#4
Roberto Bassi, Monika A Niewczas, Luigi Biancone, Stefania Bussolino, Sai Merugumala, Sara Tezza, Francesca D'Addio, Moufida Ben Nasr, Alessandro Valderrama-Vasquez, Vera Usuelli, Valentina De Zan, Basset El Essawy, Massimo Venturini, Antonio Secchi, Francesco De Cobelli, Alexander Lin, Anil Chandraker, Paolo Fiorina
BACKGROUND: Alteration of certain metabolites may play a role in the pathophysiology of renal allograft disease. METHODS: To explore metabolomic abnormalities in individuals with a failing kidney allograft, we analyzed by liquid chromatography-mass spectrometry (LC-MS/MS; for ex vivo profiling of serum and urine) and two dimensional correlated spectroscopy (2D COSY; for in vivo study of the kidney graft) 40 subjects with varying degrees of chronic allograft dysfunction stratified by tertiles of glomerular filtration rate (GFR; T1, T2, T3)...
2017: PloS One
https://www.readbyqxmd.com/read/28041619/simultaneous-determination-of-aliphatic-aromatic-and-heterocyclic-biogenic-amines-without-derivatization-by-capillary-electrophoresis-and-application-in-beer-analysis
#5
Lili He, Zhongqi Xu, Takeshi Hirokawa, Li Shen
Biogenic amines (BAs) play significant roles in indicating human health or food quality. Aiming to simultaneously determine three structures (aliphatic, aromatic and heterocyclic) of underivatized BAs, we explored a simple and rapid capillary electrophoresis (CE) method only coupled with conventional UV detector for the separation of thirteen key BAs. The strategy is to choose a UV absorbing probe as co-ion in the background electrolyte (BGE), and different BAs could be characterized by positive or negative peaks according to the fact that their UV absorptivity coefficients at a certain wavelength are better or worse than that of the UV absorbing probe...
December 24, 2016: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28008780/carnosine-inhibits-the-proliferation-of-human-cervical-gland-carcinoma-cells-through-inhibiting-both-mitochondrial-bioenergetics-and-glycolysis-pathways-and-retarding-cell-cycle-progression
#6
Yun Bao, Saidan Ding, Jiaoyan Cheng, Yuan Liu, Bingyu Wang, Huijuan Xu, Yao Shen, Jianxin Lyu
Carnosine has been demonstrated to play an antitumorigenic role in certain types of cancer. However, its underlying mechanism is unclear. In this study, the roles of carnosine in cell proliferation and its underlying mechanism were investigated in the cultured human cervical gland carcinoma cells HeLa and cervical squamous carcinoma cells SiHa. The results showed that carnosine exerted a significant inhibitory effect on the proliferation of HeLa cells, whereas its inhibitory action on the proliferation of SiHa cells was much weaker...
December 1, 2016: Integrative Cancer Therapies
https://www.readbyqxmd.com/read/27979143/determination-of-anti-oxidative-histidine-dipeptides-in-poultry-by-microchip-capillary-electrophoresis-with-contactless-conductivity-detection
#7
Marija Jozanović, Mateja Hajduković, Olivera Galović, Gordana Kralik, Zlata Kralik, Nikola Sakač, Martina Medvidović-Kosanović, Milan Sak-Bosnar
A home-made microchip electrophoresis (MCE) device was used to quantitate two biologically important histidine dipeptides, carnosine and anserine, using capacitively coupled contactless conductivity detection (C(4)D), at pH 2.7. The C(4)D detector exhibited a linear response to both carnosine and anserine in the range of 0-200μM for the individual dipeptides and in the range of 0-100μM for each dipeptide when both were present as a mixture. The limit of detections (LOD) for the dipeptides in the mixture were 0...
April 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27878396/new-dinitrosyl-iron-complexes-bound-with-physiologically-active-dipeptide-carnosine
#8
Konstantin B Shumaev, Olga V Kosmachevskaya, Elvira I Nasybullina, Sergey V Gromov, Alexander A Novikov, Alexey F Topunov
Dinitrosyl iron complexes (DNICs) are physiological NO derivatives and account for many NO functions in biology. Polyfunctional dipeptide carnosine (beta-alanyl-L-histidine) is considered to be a very promising pharmacological agent. It was shown that in the system containing carnosine, iron ions and Angeli's salt, a new type of DNICs bound with carnosine as ligand {(carnosine)2-Fe-(NO)2}, was formed. We studied how the carbonyl compound methylglyoxal influenced this process. Carnosine-bound DNICs appear to be one of the cell's adaptation mechanisms when the amount of reactive carbonyl compounds increases at hyperglycemia...
November 22, 2016: Journal of Biological Inorganic Chemistry: JBIC
https://www.readbyqxmd.com/read/27868153/carnosine-attenuates-brain-oxidative-stress-and-apoptosis-after-intracerebral-hemorrhage-in-rats
#9
Rong-Xia Xie, Da-Wei Li, Xi-Chang Liu, Ming-Feng Yang, Jie Fang, Bao-Liang Sun, Zong-Yong Zhang, Xiao-Yi Yang
Carnosine, an endogenous dipeptide (β-alanyl-L-histidine), exerts multiple neuroprotective properties, but its role in intracerebral hemorrhage (ICH) remains unclear. This study investigates the effect of Carnosine on brain injury using the rat ICH model, which is established by type IV collagenase caudatum infusion. The results indicate that intraperitoneal administration of Carnosine (1000 mg/kg) significantly attenuates brain edema, blood-brain barrier (BBB) disruption, oxidative stress, microglia activation and neuronal apoptosis of perihematoma at 72 h following ICH in rats models, as convinced by preventing the disruption of tight junction protein ZO-1, occludin and claudin-5, followed by the decrease of ROS, MDA, 3-NT, 8-OHDG level and the increase of GSH-Px and SOD activity, then followed by the decline of Iba-1, ED-1, active caspase-3 and TUNEL positive cells and the decrease of IL-1β, IL-6, TNF-α, active caspase-3 and cytochrome c level...
November 21, 2016: Neurochemical Research
https://www.readbyqxmd.com/read/27865021/ligand-binding-specificity-of-the-escherichia-coli-periplasmic-histidine-binding-protein-hisj
#10
Subrata Paul, Sambuddha Banerjee, Hans J Vogel
The HisJ protein from Escherichia coli and related Gram negative bacteria is the periplasmic component of a bacterial ATP-cassette (ABC) transporter system. Together these proteins form a transmembrane complex that can take up L-histidine from the environment and translocate it into the cytosol. We have studied the specificity of HisJ for binding L-His and many related naturally occurring compounds. Our data confirm that L-His is the preferred ligand, but that 1-methyl-L-His and 3-methyl-L-His can also bind, while the dipeptide carnosine binds weakly and D-histidine and the histidine degradation products, histamine, urocanic acid and imidazole do not bind...
November 12, 2016: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/27857746/protective-effects-of-carnosine-on-white-matter-damage-induced-by-chronic-cerebral-hypoperfusion
#11
Jing Ma, Shu-Hong Bo, Xiao-Tong Lu, A-Jing Xu, Jian Zhang
Carnosine is a dipeptide that scavenges free radicals, inhibits inflammation in the central nervous system, and protects against ischemic and hypoxic brain damage through its anti-oxidative and anti-apoptotic actions. Therefore, we hypothesized that carnosine would also protect against white matter damage caused by subcortical ischemic injury. White matter damage was induced by right unilateral common carotid artery occlusion in mice. The animals were treated with 200, 500 or 750 mg/kg carnosine by intraperitoneal injection 30 minutes before injury and every other day after injury...
September 2016: Neural Regeneration Research
https://www.readbyqxmd.com/read/27857540/meat-quality-and-physicochemical-trait-assessments-of-berkshire-and-commercial-3-way-crossbred-pigs
#12
Sivakumar Allur Subramaniyan, Da Rae Kang, Shah Ahmed Belal, Eun-So-Ri Cho, Jong-Hyun Jung, Young-Chul Jung, Yang-Il Choi, Kwan-Seob Shim
In this study, we compared qualities and physiochemical traits of meat from Berkshire (black color) pigs with those of meat from 3-way Landrace (white color) × Yorkshire (white color) × Duroc (red color) crossbred pigs (LYD). Meat quality characteristics, including pH, color, drip loss, cooking loss, and free amino acid, fatty acid, vitamin, and mineral contents of longissimus dorsi muscles, were compared. Meat from Berkshire pigs had deeper meat color (redness), higher pH, and lower drip loss and cooking loss than meat from LYD pigs...
October 31, 2016: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/27845563/effects-of-dietary-supplementation-with-carnosine-on-meat-quality-and-antioxidant-capacity-in-broiler-chickens
#13
J Cong, L Zhang, J Li, S Wang, F Gao, G Zhou
1. This study aimed to investigate the effects of carnosine supplementation on meat quality, antioxidant capacity and lipid peroxidation status in broiler chickens. 2. A total of 256 1-d-old male Arbor Acres broilers were randomly assigned to 4 treatments consisting of 8 replicates of 8 chickens each. The birds were supplied with 4 different diets: a basal diet or a basal diet supplemented with 100, 200 or 400 mg/kg carnosine, respectively. The whole experiment lasted 42 d. 3. The results showed that dietary supplementation with carnosine linearly increased the values of pH45 min and redness and reduced drip loss of breast meat...
December 16, 2016: British Poultry Science
https://www.readbyqxmd.com/read/27834323/association-of-ctg-repeat-polymorphism-in-carnosine-dipeptidase-1-cndp1-gene-with-diabetic-nephropathy-in-north-indians
#14
Ashok K Yadav, Nisha Sinha, Vinod Kumar, Anil Bhansali, Pinaki Dutta, Vivekanand Jha
BACKGROUND & OBJECTIVES: CNDP1 gene, present on chromosome 18q22.3-23, encodes carnosinase, the rate-limiting enzyme in hydrolysis of carnosine to ß-alanine and L-histidine. Linkage of CTG trinucleotide (leucine) repeat polymorphism in CNDP1 gene with diabetic nephropathy has been observed in several populations. However, this association is conflicting and population-dependent. We investigated this association in type 2 diabetes mellitus (T2DM) patients with and without nephropathy in north India...
July 2016: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/27822337/on-the-anticataractogenic-effects-of-l-carnosine-is-it-best-described-as-an-antioxidant-metal-chelating-agent-or-glycation-inhibitor
#15
Hamdy Abdelkader, Michael Longman, Raid G Alany, Barbara Pierscionek
Purpose. L-Carnosine is a naturally occurring dipeptide which recently gained popularity as an anticataractogenic agent due to its purported antioxidant activities. There is a paucity of research and conclusive evidence to support such claims. This work offers compelling data that help clarify the mechanism(s) behind the anticataract properties of L-carnosine. Methods. Direct in vitro antioxidant free radical scavenging properties were assayed using three different antioxidant (TEAC, CUPRAC, and DPPH) assays...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27813677/muscle-carnosine-concentration-with-the-co-ingestion-of-carbohydrate-with-%C3%AE-alanine-in-male-rats
#16
Alireza Naderi, Mehdi Sadeghi, Amir Sarshin, Vahid Imanipour, Seyed Ali Nazeri, Fatemeh Farkhayi, Mark E T Willems
Muscle carnosine is an intracellular buffer. The intake of β-alanine, combined with carbohydrate and protein, enhanced carnosine loading in human muscle. The aim of the present study was to examine if muscle carnosine loading was enhanced by β-alanine intake and co-ingestion of glucose in male rats. Thirty-six male rats were divided into three groups and supplemented for four weeks: β-alanine (βA group, 1.8% β-alanine in drinking water), β-alanine and glucose (βAGL group, 1.8% β-alanine and 5% glucose in drinking water), and control (C group, drinking water)...
November 4, 2016: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/27811375/pyruvate-attenuates-the-anti-neoplastic-effect-of-carnosine-independently-from-oxidative-phosphorylation
#17
Henry Oppermann, Lutz Schnabel, Jürgen Meixensberger, Frank Gaunitz
Here we analyzed whether the anti-neoplastic effect of carnosine, which inhibits glycolytic ATP production, can be antagonized by ATP production via oxidative phosphorylation fueled by pyruvate. Therefore, glioblastoma cells were cultivated in medium supplemented with glucose, galactose or pyruvate and in the presence or absence of carnosine. CPI-613 was employed to inhibit the entry of pyruvate into the tricarboxylic acid cycle and 2,4-dinitrophenol to inhibit oxidative phosphorylation. Energy metabolism and viability were assessed by cell based assays and histochemistry...
November 3, 2016: Oncotarget
https://www.readbyqxmd.com/read/27801825/a-clinical-trial-about-a-food-supplement-containing-%C3%AE-lipoic-acid-on-oxidative-stress-markers-in-type-2-diabetic-patients
#18
Giuseppe Derosa, Angela D'Angelo, Davide Romano, Pamela Maffioli
The aim of this study was to evaluate the effect of a food supplement containing α-lipoic acid and of a placebo on glyco-metabolic control and on oxidative stress markers in type 2 diabetics. We randomized 105 diabetics to either a supplementation containing 600 mg of α-lipoic acid, 165 mg of L-carnosin, 7.5 mg of zinc, and vitamins of group B, or a placebo, for three months. We evaluated body mass index, fasting plasma glucose (FPG), post-prandial-glucose (PPG), glycated hemoglobin (HbA1c), fasting plasma insulin (FPI), HOMA-index (HOMA-IR), lipid profile, high sensitivity C-reactive protein (Hs-CRP), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), malondialdehyde (MDA)...
October 28, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27797728/%C3%AE-alanine-supplementation-to-improve-exercise-capacity-and-performance-a-systematic-review-and-meta-analysis
#19
Bryan Saunders, Kirsty Elliott-Sale, Guilherme G Artioli, Paul A Swinton, Eimear Dolan, Hamilton Roschel, Craig Sale, Bruno Gualano
OBJECTIVE: To conduct a systematic review and meta-analysis of the evidence on the effects of β-alanine supplementation on exercise capacity and performance. DESIGN: This study was designed in accordance with PRISMA guidelines. A 3-level mixed effects model was employed to model effect sizes and account for dependencies within data. DATA SOURCES: 3 databases (PubMed, Google Scholar, Web of Science) were searched using a number of terms ('β-alanine' and 'Beta-alanine' combined with 'supplementation', 'exercise', 'training', 'athlete', 'performance' and 'carnosine')...
October 18, 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/27777064/carnosine-ameliorates-cognitive-deficits-in-streptozotocin-induced-diabetic-rats-possible-involved-mechanisms
#20
Siamak Ahshin-Majd, Samira Zamani, Taktom Kiamari, Zahra Kiasalari, Tourandokht Baluchnejadmojarad, Mehrdad Roghani
Diabetic patients are at increased risk to develop cognitive deficit and senile dementia. This study was planned to assess the benefits of chronic carnosine administration on prevention of learning and memory deterioration in streptozotocin (STZ)-diabetic rats and to explore some of the involved mechanisms. Rats were divided into 5 groups: i.e., control, carnosine100-treated control, diabetic, and carnosine-treated diabetics (50 and 100mg/kg). Carnosine was injected i.p. at doses of 50 or 100mg/kg for 7 weeks, started 1 week after induction of diabetes using streptozotocin...
December 2016: Peptides
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