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Carnosine

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https://www.readbyqxmd.com/read/28777736/a-pilot-study-of-the-effect-of-human-breast-milk-on-urinary-metabolome-analysis-in-infants
#1
Hiromichi Shoji, Hikari Taka, Naoko Kaga, Naho Ikeda, Tomohiro Kitamura, Yoshiki Miura, Toshiaki Shimizu
BACKGROUND: This study aimed to examine the nutritional effect of breast feeding on healthy term infants by using urinary metabolome analysis. METHODS: Urine samples were collected from 19 and 14 infants at 1 and 6 months, respectively. Infants were separated into two groups: the breast-fed group receiving <540 mL/week of their intake from formula (n=13 at 1 month; n=9 at 6 months); and the formula-fed group receiving no breast milk (BM) (n=6 at 1 month; n=5 at 6 months)...
August 4, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28776910/antiglycation-and-anti-oxidant-efficiency-of-carnosine-in-the-plasma-and-liver-of-aged-rats
#2
İlknur Bingül, Zülbiye Yılmaz, A Fatih Aydın, Jale Çoban, Semra Doğru-Abbasoğlu, Müjdat Uysal
AIM: Increases in oxidative stress and advanced glycation end-products (AGE) formation play an important role in the pathogenesis of aging. Carnosine (CAR; β-alanyl-L-histidine) has anti-oxidant and antiglycating properties. We investigated the effect of CAR supplementation on AGE levels, and protein and lipid oxidation products in the serum and liver tissue in aged rats. METHODS: Young (3 months-of-age) and aged (20 months-of-age) rats were injected with CAR (250 mg/kg/daily; i...
August 4, 2017: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/28776438/allosteric-inhibition-of-carnosinase-cn1-by-inducing-a-conformational-shift
#3
Verena Peters, Claus P Schmitt, Tim Weigand, Kristina Klingbeil, Christian Thiel, Antje van den Berg, Vittorio Calabrese, Peter Nawroth, Thomas Fleming, Elisabete Forsberg, Andreas H Wagner, Markus Hecker, Giulio Vistoli
In humans, low serum carnosinase (CN1) activity protects patients with type 2 diabetes from diabetic nephropathy. We now characterized the interaction of thiol-containing compounds with CN1 cysteine residue at position 102, which is important for CN1 activity. Reduced glutathione (GSH), N-acetylcysteine and cysteine (3.2 ± 0.4, 2.0 ± 0.3, 1.6 ± 0.2 µmol/mg/h/mM; p < .05) lowered dose-dependently recombinant CN1 (rCN1) efficiency (5.2 ± 0.2 µmol/mg/h/mM) and normalized increased CN1 activity renal tissue samples of diabetic mice...
December 2017: Journal of Enzyme Inhibition and Medicinal Chemistry
https://www.readbyqxmd.com/read/28759885/identification-of-single-nucleotide-polymorphisms-in-carnosine-related-genes-and-effects-of-genotypes-on-pork-meat-quality-attributes
#4
Joël D'Astous-Pagé, Claude Gariépy, Richard Blouin, Simon Cliche, Steve Méthot, Brian Sullivan, Frédéric Fortin, Marie-France Palin
Carnosine has pH-buffering and antioxidant properties that may bring advantages in terms of meat quality attributes. This study aimed at identifying polymorphisms in carnosine-related genes (CARNS1, SLC6A6, SLC15A3, SLC15A4) that might associate with muscle carnosine content and meat quality traits in pigs (Duroc, Landrace, Yorkshire). Twenty seven SNPs were identified and association analyses performed for SLC15A3 c.*35C>T and c.*52C>T (3' UTR region), and SLC15A4 c.658A>G (Ile220Val) and c.818G>A (Ser273Asn) SNPs...
July 26, 2017: Meat Science
https://www.readbyqxmd.com/read/28758940/non-targeted-metabolomics-analysis-of-golden-retriever-muscular-dystrophy-affected-muscles-reveals-alterations-in-arginine-and-proline-metabolism-and-elevations-in-glutamic-and-oleic-acid-in-vivo
#5
Muhammad Abdullah, Joe N Kornegay, Aubree Honcoop, Traci L Parry, Cynthia J Balog-Alvarez, Sara K O'Neal, James R Bain, Michael J Muehlbauer, Christopher B Newgard, Cam Patterson, Monte S Willis
BACKGROUND: Like Duchenne muscular dystrophy (DMD), the Golden Retriever Muscular Dystrophy (GRMD) dog model of DMD is characterized by muscle necrosis, progressive paralysis, and pseudohypertrophy in specific skeletal muscles. This severe GRMD phenotype includes moderate atrophy of the biceps femoris (BF) as compared to unaffected normal dogs, while the long digital extensor (LDE), which functions to flex the tibiotarsal joint and serves as a digital extensor, undergoes the most pronounced atrophy...
July 29, 2017: Metabolites
https://www.readbyqxmd.com/read/28752496/investigations-on-in-vitro-anti-carcinogenic-potential-of-l-carnosine-in-liver-cancer-cells
#6
Minghui Ding, Guihua Jiao, Haizhou Shi, Yanrong Chen
This study was carried out to investigate the anti-carcinogenic effect of L-carnosine in human carcinoma cells (SNU-423). The SNU-423 cancer cells were cultured at a density of 2 × 10(4) cells/well in Dulbecco modified Eagle medium. After 24 h of adherence, the cells were treated with L-carnosine (0.2 and 1 mg/mL) for 48 h. Then, cell viability was assessed by sulforhodamine assay, while mitochondrial dysfunction was measured by fluorescence microscopy using chromatin-specific dye Hoechst 33258. Intracellular levels of ROS were assayed by fluorescence spectroscopy with 2',7'-dichlorofluorescein diacetate (DCFDA)...
July 27, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28744992/the-effect-of-12-weeks-carnosine-supplementation-on-renal-functional-integrity-and-oxidative-stress-in-pediatric-patients-with-diabetic-nephropathy-a-randomized-placebo-controlled-trial
#7
Nancy Samir Elbarbary, Eman Abdel Rahman Ismail, Abdel Rahman El-Naggar, Mahitab Hany Hamouda, Manal El-Hamamsy
BACKGROUND AND OBJECTIVES: Oxidative stress is a significant contributor to the pathogenesis of diabetic nephropathy. Carnosine is a natural radical oxygen species scavenger. We investigated the effect of carnosine as an adjuvant therapy on urinary albumin excretion (UAE), the tubular damage marker alpha 1-microglobulin (A1M), and oxidative stress in pediatric patients with type 1 diabetes and nephropathy. METHODS: This randomized placebo-controlled trial included 90 patients with diabetic nephropathy, despite oral angiotensin-converting enzyme inhibitors (ACE-Is), who were randomly assigned to receive either 12 weeks of carnosine 1 g/day (n = 45), or matching placebo (n = 45)...
July 26, 2017: Pediatric Diabetes
https://www.readbyqxmd.com/read/28698672/metabolic-effects-of-clenbuterol-and-salbutamol-on-pork-meat-studied-using-internal-extractive-electrospray-ionization-mass-spectrometry
#8
Haiyan Lu, Hua Zhang, Tenggao Zhu, Yipo Xiao, Shaoxian Xie, Haiwei Gu, Meng Cui, Liping Luo
Direct mass spectrometry analysis of metabolic effects of clenbuterol and salbutamol on pork quality at the molecular level is incredibly beneficial for food regulations, public health and the development of new anti-obesity drugs. With internal extractive electrospray ionization mass spectrometry (iEESI-MS), nutrients including creatine, amino acids, L-carnitine, vitamin B6, carnosine and phosphatidylcholines in pork tissue were identified, without sample pretreatment, using collision-induced dissociation (CID) experiments and by comparison with authentic compounds...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28697633/zinc-l-carnosine-suppresses-inflammatory-responses-in-lipopolysaccharide-induced-raw-264-7-murine-macrophages-cell-line-via-activation-of-nrf2-ho-1-signaling-pathway
#9
Theng Choon Ooi, Kok Meng Chan, Razinah Sharif
CONTEXT: Zinc L-carnosine (ZnC) is a chelate of Zn and L-carnosine and is used clinically in the treatment of peptic ulcer. OBJECTIVE: In this study, we aim to investigate the involvement of heme oxygenase-1 (HO-1) in the anti-inflammatory effects of ZnC in lipopolysaccharide (LPS)-induced RAW 264.7 murine macrophages. MATERIALS AND METHODS: We used immunoblotting analysis to evaluate the involvement of HO-1 in the anti-inflammatory effects of ZnC and the signaling pathway involved was measured using Dual luciferase reporter assay...
July 11, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28676006/carnosine-treatment-diminished-oxidative-stress-and-glycation-products-in-serum-and-tissues-of-d-galactose-treated-rats
#10
Fatih Aydin, Esra Betul Kalaz, Canan Kucukgergin, Jale Coban, Semra Dogru-Abbasoglu, Mujdat Uysal
D-galactose (GAL) has been used as an animal model for aging and antiaging studies. GAL stimulates oxidative stress and increases the formation of advanced glycation end products (AGE) in body fluids and tissues. Carnosine (CAR; β-alanil-L-histidine) exhibits antioxidant and anti-glycating properties. We investigated the effect of CAR supplementation on oxidative stress and AGE levels in serum, liver and brain tissues in GAL-treated rats. Rats received GAL (300 mg/kg; s.c.; 5 days per week) alone or together with CAR (250 mg/kg/daily; i...
July 3, 2017: Current Aging Science
https://www.readbyqxmd.com/read/28675793/chelating-effects-of-carnosine-in-ameliorating-nickel-induced-nephrotoxicity-in-rats
#11
Parisa Hasanein, Zhila Felegari
The kidney is one of the main organs affected by nickel (Ni) toxicity. We investigated the protective effects of carnosine on Ni- induced oxidative stress in kidney of rats. Animals received NiSO4 (20 mg/kg/day i.g.) and/or carnosine (10 mg/kg/day, i.g.) for 21 days and then were evaluated for biochemical, molecular and histopathological alterations. Ni caused an increase in renal levels of malondialdehydes and a decrease in reduced glutathione, catalase and superoxide dismutase levels and total antioxidant capacity...
July 4, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28672983/neuroprotective-effect-of-carnosine-against-salsolinol-induced-parkinson-s-disease
#12
Jun Zhao, Lei Shi, Li-Rong Zhang
Carnosine is a dipeptide of β-alanine and histidine amino acids. It is widely present in muscle and brain tissues. Carnosine has been demonstrated to be an antioxidant agent that is beneficial in animals. Reactive oxygen species (ROS) and aldehydes are are generated from membrane fatty acid oxidation. The antioxidant potential and toxicity of salsolinol had been extensively studied in vivo and in vitro. The present study analyzed the protective effect of carnosine against Parkinson's disease in the salsolinol-induced rat brain and rat brain endothelial cells...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28654751/substrate-recognition-mechanism-of-the-putative-yeast-carnosine-n-methyltransferase
#13
Xiwen Liu, Jialiang Wu, Yujie Sun, Wei Xie
Anserine (β-alanyl-N(Pi)-methyl-l-histidine) is a natural metabolite present in skeletal muscle and the central nervous system of vertebrates and plays important physiological roles in living organisms. The production of anserine is catalyzed by carnosine N-methyltransferases, which transfer a methyl group to carnosine (β-alanyl-l-histidine). However, the structural basis of the substrate recognition for the enzymes is unknown. We present the crystal structure of the putative carnosine N-methyltransferase from yeast named YNL092W in complex with SAH, solved by the single-wavelength anomalous dispersion (SAD) method...
July 13, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28597777/improved-metabolism-and-redox-state-with-a-novel-preservation-solution-implications-for-donor-lungs-after-cardiac-death-dcd
#14
David A Schipper, Anthony V Louis, Destiny S Dicken, Kitsie Johnson, Ryszard T Smolenski, Stephen M Black, Ray Runyan, John Konhilas, Joe G N Garcia, Zain Khalpey
Lungs donated after cardiac death (DCD) are an underutilized resource for a dwindling donor lung transplant pool. Our study investigates the potential of a novel preservation solution, Somah, to better preserve statically stored DCD lungs, for an extended time period, when compared to low-potassium dextran solution (LPD). We hypothesize that Somah is a metabolically superior organ preservation solution for hypothermic statically stored porcine DCD lungs, possibly improving lung transplant outcomes. Porcine DCD lungs (n = 3 per group) were flushed with and submerged in cold preservation solution...
April 2017: Pulmonary Circulation
https://www.readbyqxmd.com/read/28580188/on-the-relationship-between-energy-metabolism-proteostasis-aging-and-parkinson-s-disease-possible-causative-role-of-methylglyoxal-and-alleviative-potential-of-carnosine
#15
REVIEW
Alan R Hipkiss
Recent research shows that energy metabolism can strongly influence proteostasis and thereby affect onset of aging and related disease such as Parkinson's disease (PD). Changes in glycolytic and proteolytic activities (influenced by diet and development) are suggested to synergistically create a self-reinforcing deleterious cycle via enhanced formation of triose phosphates (dihydroxyacetone-phosphate and glyceraldehyde-3-phosphate) and their decomposition product methylglyoxal (MG). It is proposed that triose phosphates and/or MG contribute to the development of PD and its attendant pathophysiological symptoms...
May 2017: Aging and Disease
https://www.readbyqxmd.com/read/28561587/protective-effects-of-functional-chicken-liver-hydrolysates-against-liver-fibrogenesis-antioxidation-anti-inflammation-and-antifibrosis
#16
Po-Ju Chen, Jung-Kai Tseng, Yi-Ling Lin, Yi-Hsieng Samuel Wu, Yi-Tse Hsiao, Jr-Wei Chen, Yi-Chen Chen
Via an assay using an Amino Acid Analyzer, pepsin-digested chicken liver hydrolysates (CLHs) contain taurine (365.57 ± 39.04 mg/100 g), carnosine (14.03 ± 1.98 mg/100 g), and anserine (151.58 ± 27.82 mg/100 g). This study aimed to evaluate whether CLHs could alleviate thioacetamide (TAA)-induced fibrosis. A dose of 100 mg TAA/kg BW significantly increased serum liver damage indices and liver cytokine contents. Cell infiltration and monocytes/macrophages in livers of TAA-treated rats were illustrated by the H&E staining and immunohistochemical analysis of cluster of differentiation 68 (CD68, ED1), respectively...
June 21, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28555342/microchip-electrophoresis-with-laser-induced-fluorescence-detection-for-the-determination-of-the-ratio-of-nitric-oxide-to-superoxide-production-in-macrophages-during-inflammation
#17
Giuseppe Caruso, Claudia G Fresta, Joseph M Siegel, Manjula B Wijesinghe, Susan M Lunte
It is well known that excessive production of reactive oxygen and nitrogen species is linked to the development of oxidative stress-driven disorders. In particular, nitric oxide (NO) and superoxide (O2(•-)) play critical roles in many physiological and pathological processes. This article reports the use of 4-amino-5-methylamino-2',7'-difluorofluorescein diacetate and MitoSOX Red in conjunction with microchip electrophoresis and laser-induced fluorescence detection for the simultaneous detection of NO and O2(•-) in RAW 264...
July 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28536640/survival-rates-of-homozygotic-tp53-knockout-rats-as-a-tool-for-preclinical-assessment-of-cancer-prevention-and-treatment
#18
Damian Strzemecki, Magdalena Guzowska, Paweł Grieb
BACKGROUND: The gene that encodes tumor protein p53, Tp53, is mutated or silenced in most human cancers and is recognized as one of the most important cancer drivers. Homozygotic Tp53 knockout mice, which develop lethal cancers early in their lives, are already used in cancer prevention studies, and now Tp53 knockout rats have also been generated. This study assessed feasibility of using homozygous Tp53 knockout rats to evaluate the possible outcome of cancer chemoprevention. METHODS: A small colony of Tp53 knockout rats with a Wistar strain genetic background was initiated and maintained in the animal house at our institution...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28534466/validation-of-a-method-for-the-determination-of-balenine-ophidine-in-whale
#19
Stig Valdersnes, Anita Birkenes, Livar Froyland
<p>The aim of this study was to develop and validate a method for the determination of balenine/ophidine (hereafter referred to as “balenine”) in whale extracts and muscle samples from Balaenoptera acutorostrata. Further, the goal was to evaluate the method's applicability for the determination of other histidine-containing dipeptides (HCDs): anserine and carnosine and their amino acids π-methylhistidine, τ-methylhistidine, histidine, and β-alanine. For balenine, the LOD and LOQ were found to be 0...
May 22, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28516269/%C3%AE-alanine-intercede-metabolic-recovery-for-amelioration-of-human-cervical-and-renal-tumors
#20
Muthuraman Pandurangan, Gansukh Enkhtaivan, Bhupendra Mistry, Rahul V Patel, Sohyun Moon, Doo Hwan Kim
β-Alanine is a non-essential amino acid and presents as a major component of various sports supplements. It is a non-proteogenic amino acid, formed in vivo by degradation of carnosine, anserine, balenine, and dihydrouracil. The present study was aimed at investigating the anti-tumor effects of β-alanine in renal and cervical tumor cells. Sulforhodamine-B assay and flow cytometric analysis were used to measure cell viability. Lactate dehydrogenase (LDH) expression was analyzed using FITC-conjugated fluorescent antibody...
May 17, 2017: Amino Acids
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