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Neuroprotective Potential of Carnosine in Cerebrovascular Diseases. Int J Pept Res Ther 2021. [DOI: 10.1007/s10989-021-10342-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Frailty markers comprise blood metabolites involved in antioxidation, cognition, and mobility. Proc Natl Acad Sci U S A 2020; 117:9483-9489. [PMID: 32295884 PMCID: PMC7196897 DOI: 10.1073/pnas.1920795117] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Frailty resulting from age-related deterioration of multiple organ systems displays complex features, including cognitive dysfunction, hypomobility, and impaired daily activity. However, metabolic aspects of frailty remain unclear. We performed untargeted, comprehensive metabolomics of whole blood from 19 frail and nonfrail elderly patients. We identified 22 markers, including 15 for frailty, 6 for cognition, and 12 for hypomobility, most of which are abundant in blood. Frailty markers include 5 of 6 for cognition and 6 of 12 for hypomobility. These overlapping markers include decreased levels of metabolites related to antioxidation, nitrogen, and amino acid metabolism. Ergothioneine, an antioxidant involved in neuronal diseases, declines in frailty. Thus, we reveal essential metabolites linked to the pathogenesis of frailty, including vulnerability to oxidative stress. As human society ages globally, age-related disorders are becoming increasingly common. Due to decreasing physiological reserves and increasing organ system dysfunction associated with age, frailty affects many elderly people, compromising their ability to cope with acute stressors. Frail elderly people commonly manifest complex clinical symptoms, including cognitive dysfunction, hypomobility, and impaired daily activity, the metabolic basis of which remains poorly understood. We applied untargeted, comprehensive LC-MS metabolomic analysis to human blood from 19 frail and nonfrail elderly patients who were clinically evaluated using the Edmonton Frail Scale, the MoCA-J for cognition, and the TUG for mobility. Among 131 metabolites assayed, we identified 22 markers for frailty, cognition, and hypomobility, most of which were abundant in blood. Frailty markers included 5 of 6 markers specifically related to cognition and 6 of 12 markers associated with hypomobility. These overlapping sets of markers included metabolites related to antioxidation, muscle or nitrogen metabolism, and amino acids, most of which are decreased in frail elderly people. Five frailty-related metabolites that decreased—1,5-anhydroglucitol, acetyl-carnosine, ophthalmic acid, leucine, and isoleucine—have been previously reported as markers of aging, providing a metabolic link between human aging and frailty. Our findings clearly indicate that metabolite profiles efficiently distinguish frailty from nonfrailty. Importantly, the antioxidant ergothioneine, which decreases in frailty, is neuroprotective. Oxidative stress resulting from diminished antioxidant levels could be a key vulnerability for the pathogenesis of frailty, exacerbating illnesses related to human aging.
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Li HY, Hong X, Huang M, So KF. Voluntary running delays primary degeneration in rat retinas after partial optic nerve transection. Neural Regen Res 2019; 14:728-734. [PMID: 30632515 PMCID: PMC6352605 DOI: 10.4103/1673-5374.247481] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Running is believed to be beneficial for human health. Many studies have focused on the neuroprotective effects of voluntary running on animal models. There were both primary and secondary degeneration in neurodegenerative diseases, including glaucoma. However, whether running can delay primary or secondary degeneration or both of them was not clear. Partial optic nerve transection model is a valuable glaucoma model for studying both primary and secondary degeneration because it can separate primary (mainly in the superior retina) from secondary (mainly in the inferior retina) degeneration. Therefore, we compared the survival of retinal ganglion cells between Sprague-Dawley rat runners and non-runners both in the superior and inferior retinas. Excitotoxicity, oxidative stress, and apoptosis are involved in the degeneration of retinal ganglion cells in glaucoma. So we also used western immunoblotting to compare the expression of some proteins involved in apoptosis (phospho-c-Jun N-terminal kinases, p-JNKs), oxidative stress (manganese superoxide dismutase, MnSOD) and excitotoxicity (glutamine synthetase) between runners and non-runners after partial optic nerve transection. Results showed that voluntary running delayed the death of retinal ganglion cells vulnerable to primary degeneration but not those to secondary degeneration. In addition, voluntary running decreased the expression of glutamine synthetase, but not the expression of p-JNKs and MnSOD in the superior retina after partial optic nerve transection. These results illustrated that primary degeneration of retinal ganglion cells might be mainly related with excitotoxicity rather than oxidative stress; and the voluntary running could down-regulate excitotoxicity to delay the primary degeneration of retinal ganglion cells after partial optic nerve transection.
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Affiliation(s)
- Hong-Ying Li
- Department of Anatomy, School of Medicine; Guangdong-Hongkong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory, Jinan University, Guangzhou, Guangdong Province, China
| | - Xi Hong
- Department of Anatomy, School of Medicine, Jinan University, Guangzhou, Guangdong Province, China
| | - Mi Huang
- Guangdong-Hongkong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory; Guangdong Key Laboratory of Brain Function and Diseases, Jinan University, Guangzhou, Guangdong Province, China
| | - Kwok-Fai So
- Guangdong-Hongkong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory; Guangdong Key Laboratory of Brain Function and Diseases, Jinan University, Guangzhou, Guangdong Province; Department of Ophthalmology and State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong Special Administrative Region, China
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Vijayasankaran N, Varma S, Yang Y, Meier S, Kiss R. Effect of cell culture medium additives on color and acidic charge variants of a monoclonal antibody. Biotechnol Prog 2018; 34:1298-1307. [DOI: 10.1002/btpr.2668] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 05/15/2018] [Indexed: 01/19/2023]
Affiliation(s)
| | - Sharat Varma
- Late Stage Cell Culture, South San Francisco, CA 94080
| | - Yi Yang
- Protein Analytical ChemistryGenentech, Inc.South San Francisco CA 94080
| | - Steven Meier
- Late Stage Cell Culture, South San Francisco, CA 94080
| | - Robert Kiss
- Late Stage Cell Culture, South San Francisco, CA 94080
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Jamshidzadeh A, Heidari R, Latifpour Z, Ommati MM, Abdoli N, Mousavi S, Azarpira N, Zarei A, Zarei M, Asadi B, Abasvali M, Yeganeh Y, Jafari F, Saeedi A, Najibi A, Mardani E. Carnosine ameliorates liver fibrosis and hyperammonemia in cirrhotic rats. Clin Res Hepatol Gastroenterol 2017; 41:424-434. [PMID: 28283328 DOI: 10.1016/j.clinre.2016.12.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 11/24/2016] [Accepted: 12/28/2016] [Indexed: 02/04/2023]
Abstract
AIM Chronic liver injury and cirrhosis leads to liver failure. Hyperammonemia is a deleterious consequence of liver failure. On the other hand, oxidative stress seems to play a pivotal role in the pathogenesis of liver fibrosis as well as in the cytotoxic mechanism of ammonia. There is no promising therapeutic agent against ammonia-induced complications. The present study was conducted to evaluate the role of carnosine (CA) administration on liver pathological changes, elevated plasma ammonia, and its consequent events in cirrhotic rats. METHODS Bile duct ligated (BDL) rats were used as a model of cirrhosis. CA (250, 500, and 1000mg/kg, daily, i.p) was administered for 28 consecutive days to BDL animals. At the end of treatments, markers of oxidative stress and liver fibrosis was determined in liver and serum biomarkers of liver injury and plasma ammonia was assessed. Moreover, changes in animals' locomotor activity were monitored. RESULTS Severe bridging fibrosis, inflammation, and necrosis in liver, along with elevated serum biomarkers of liver injury were evident in BDL animals. Furthermore, plasma ammonia was drastically elevated in cirrhotic rats and animals' locomotor activity was suppressed. It was found that CA (250, 500, and 1000mg/kg, daily, i.p) significantly alleviated liver injury and its consequent events in cirrhotic rats. The data suggested that CA is not only a useful and safe agent to preserve liver function, but also prevented hyperammonemia and brain damage as a deleterious consequence of cirrhosis and liver failure.
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Affiliation(s)
- Akram Jamshidzadeh
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, P.O. Box 1583, 71345 Roknabad, Karafarin Street, Shiraz, Fars, Iran; Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Reza Heidari
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, P.O. Box 1583, 71345 Roknabad, Karafarin Street, Shiraz, Fars, Iran.
| | - Zahra Latifpour
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammed Mehdi Ommati
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, P.O. Box 1583, 71345 Roknabad, Karafarin Street, Shiraz, Fars, Iran
| | - Narges Abdoli
- Iran Food and Drug Administration (IFDA), Ministry of Health, Tehran, Iran
| | - Somayeh Mousavi
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Negar Azarpira
- Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Azita Zarei
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mahdi Zarei
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Behnam Asadi
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mojgan Abasvali
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Yasaman Yeganeh
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Faezeh Jafari
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Arastoo Saeedi
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Asma Najibi
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Elnaz Mardani
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
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Lopachev AV, Lopacheva OM, Akkuratov EE, Stvolinskii SL, Fedorova TN. Carnosine protects a primary cerebellar cell culture from acute NMDA toxicity. NEUROCHEM J+ 2017. [DOI: 10.1134/s1819712417010068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Li SH, Chen L, Pang XM, Su SY, Zhou X, Chen CY, Huang LG, Li JP, Liu JL. Decreased miR-146a expression in acute ischemic stroke directly targets the Fbxl10 mRNA and is involved in modulating apoptosis. Neurochem Int 2017; 107:156-167. [PMID: 28202285 DOI: 10.1016/j.neuint.2017.01.011] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 01/14/2017] [Accepted: 01/20/2017] [Indexed: 12/28/2022]
Abstract
BACKGROUND miR-146a, a strong pro-apoptotic factor in some pathophysiological processes, is reported to be involved in ischemic stroke (IS), though its role remains unclear. Fbxl10 is an active anti-apoptotic factor and a predicted target of miR-146a. We hypothesized that dysregulation of miR-146a contributes to ischemic injury by targeting Fbxl10. METHODS Circulating miRNAs were detected by miRNA microarray and qRT-PCR. miR-146a targets were predicted using bioinformatics and confirmed with a dual luciferase reporter assay. We used an in vitro ischemic model of oxygen-glucose deprivation and reperfusion (OGD/R) to mimic cerebral ischemia/reperfusion (I/R) conditions. Expression of miR-146a, Fbxl10 and Bcl2l2 mRNAs, and Fbxl10 and Bcl2l2 proteins was verified by qRT-PCR and Western blotting. The effects of miR-146a on neuronal cell apoptosis were evaluated by flow cytometry. RESULTS A significant reduction in miR-146a expression was observed in acute ischemic stroke (AIS). A dual-luciferase reporter assay showed that Fbxl10, but not Bcl2l2, is a target of miR-146a. Transfection with miR-146a mimics promoted apoptosis in SK-N-SH cells and significantly reduced expression of Fbxl10. Conversely, miR-146a inhibition attenuated OGD/R-induced neuronal cell death and significantly up-regulated Fbxl10 expression. CONCLUSIONS miR-146a expression was significantly down-regulated in AIS, and Fbxl10 was identified as a target of miR-146a. Moreover, up-regulation of Fbxl10, a miR-146a target, likely protects neurons from ischemic death.
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Affiliation(s)
- Sheng-Hua Li
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University in Nanning, China.
| | - Lan Chen
- Department of Internal Medicine, The First Affiliated Hospital of Guangxi Medical University in Nanning, China
| | - Xiao-Min Pang
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University in Nanning, China
| | - Sheng-You Su
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University in Nanning, China
| | - Xia Zhou
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University in Nanning, China
| | - Chun-Yong Chen
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University in Nanning, China
| | - Li-Gang Huang
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University in Nanning, China
| | - Jing-Pin Li
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University in Nanning, China
| | - Jing-Li Liu
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University in Nanning, China.
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Wei S, Tong J, Xue Q, Liu Y, Xu X. Effect of puerarin on transcriptome of astrocyte during oxygen-glucose deprivation/reoxygenation injury. Mol Cell Biochem 2016; 425:113-123. [PMID: 27844252 DOI: 10.1007/s11010-016-2867-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 11/02/2016] [Indexed: 12/12/2022]
Abstract
Stroke is a serious disease with complex pathomechanism and limited therapeutic effect in clinic. Our previous research has found obvious therapeutic effect of Puerarin (Pur) on stroke injury of rat. The aim of this study is to investigate the transcriptome changes of oxygen-glucose deprivation/reoxygenation (OGD/R)-injured astrocytes before and after the intervention of Pur. Cells activity and apoptosis detection indicated that the activity of OGD/R-injured astrocytes was improved, and the apoptosis was ameliorated by Pur. Affymetrix GeneChip Rat Genome 230 2.0 Array assays indicated that after intervention of Pur, mRNA expressions of 31 genes were up-regulated and 40 genes were down-regulated in OGD group, whereas mRNA expression of 36 genes were up-regulated, and 88 genes were down-regulated in OGD/R group. Pathway analysis indicated that the olfactory transduction pathway and the JAK (janus kinase) 2/STAT (signal transducer and activator of transcription) three pathways were down-regulated by Pur during OGD/R injury of astrocytes. These data indicated that Pur regulates transcriptome and expresses protective effect on astrocytes during OGD/R injury, and may be a potential therapeutic agent for the treatment of stroke.
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Affiliation(s)
- Shuyong Wei
- Southwest University, Rongchang campus, Rongchang, Chongqing, 402460, China.
| | - Jie Tong
- Pharmaceutical Sciences College & Chinese Medicine College, Southwest University, Chongqing Engineering Research Center for Pharmacodynamics Evaluation, Chongqing, 400716, China
| | - Qiang Xue
- Pharmaceutical Sciences College & Chinese Medicine College, Southwest University, Chongqing Engineering Research Center for Pharmacodynamics Evaluation, Chongqing, 400716, China
| | - Yang Liu
- Pharmaceutical Sciences College & Chinese Medicine College, Southwest University, Chongqing Engineering Research Center for Pharmacodynamics Evaluation, Chongqing, 400716, China
| | - Xiaoyu Xu
- Pharmaceutical Sciences College & Chinese Medicine College, Southwest University, Chongqing Engineering Research Center for Pharmacodynamics Evaluation, Chongqing, 400716, China.
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Pandurangan M, Enkhtaivan G, Kim DH. Therapeutic efficacy of natural dipeptide carnosine against human cervical carcinoma cells. J Mol Recognit 2016; 29:426-35. [DOI: 10.1002/jmr.2541] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 12/29/2015] [Accepted: 02/12/2016] [Indexed: 02/04/2023]
Affiliation(s)
| | - Gansukh Enkhtaivan
- Department of Bioresources and Food Science; Konkuk University; Seoul Korea
| | - Doo Hwan Kim
- Department of Bioresources and Food Science; Konkuk University; Seoul Korea
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Baky NAA, Fadda L, Al-Rasheed NM, Al-Rasheed NM, Mohamed A, Yacoub H. Neuroprotective effect of carnosine and cyclosporine-A against inflammation, apoptosis, and oxidative brain damage after closed head injury in immature rats. Toxicol Mech Methods 2015; 26:1-10. [DOI: 10.3109/15376516.2015.1070224] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Pavlin M, Repič M, Vianello R, Mavri J. The Chemistry of Neurodegeneration: Kinetic Data and Their Implications. Mol Neurobiol 2015; 53:3400-3415. [PMID: 26081152 DOI: 10.1007/s12035-015-9284-1] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 06/03/2015] [Indexed: 01/01/2023]
Abstract
We collected experimental kinetic rate constants for chemical processes responsible for the development and progress of neurodegeneration, focused on the enzymatic and non-enzymatic degradation of amine neurotransmitters and their reactive and neurotoxic metabolites. A gross scheme of neurodegeneration on the molecular level is based on two pathways. Firstly, reactive species oxidise heavy atom ions, which enhances the interaction with alpha-synuclein, thus promoting its folding to the beta form and giving rise to insoluble amyloid plaques. The latter prevents the function of vesicular transport leading to gradual neuronal death. In the second pathway, radical species, OH(·) in particular, react with the methylene groups of the apolar part of the lipid bilayer of either the cell or mitochondrial wall, resulting in membrane leakage followed by dyshomeostasis, loss of resting potential and neuron death. Unlike all other central neural system (CNS)-relevant biogenic amines, dopamine and noradrenaline are capable of a non-enzymatic auto-oxidative reaction, which produces hydrogen peroxide. This reaction is not limited to the mitochondrial membrane where scavenging enzymes, such as catalase, are located. On the other hand, dopamine and its metabolites, such as dopamine-o-quinone, dopaminechrome, 5,6-dihydroxyindole and indo-5,6-quinone, also interact directly with alpha-synuclein and reversibly inhibit plaque formation. We consider the role of the heavy metal ions, selected scavengers and scavenging enzymes, and discuss the relevance of certain foods and food supplements, including curcumin, garlic, N-acetyl cysteine, caffeine and red wine, as well as the long-term administration of non-steroid anti-inflammatory drugs and occasional tobacco smoking, that could all act toward preventing neurodegeneration. The current analysis can be employed in developing strategies for the prevention and treatment of neurodegeneration, and, hopefully, aid in the building of an overall kinetic molecular model of neurodegeneration itself.
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Affiliation(s)
- Matic Pavlin
- Computational Biophysics, German Research School for Simulation Sciences, Joint Venture of RWTH Aachen University and Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.,Computational Biomedicine, Institute for Advanced Simulations (IAS-5/INM-9), 52425, Jülich, Germany
| | - Matej Repič
- Laboratory of Computational Chemistry and Biochemistry, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Robert Vianello
- Quantum Organic Chemistry Group, Ruđer Bošković Institute, Bijenička cesta 54, HR-10000, Zagreb, Croatia.
| | - Janez Mavri
- National Institute of Chemistry, Hajdrihova 19, SI-1000, Ljubljana, Slovenia.
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Sukla KK, Jaiswal SK, Rai AK, Mishra OP, Gupta V, Kumar A, Raman R. Role of folate-homocysteine pathway gene polymorphisms and nutritional cofactors in Down syndrome: A triad study. Hum Reprod 2015; 30:1982-93. [PMID: 26040482 DOI: 10.1093/humrep/dev126] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 04/24/2015] [Indexed: 11/14/2022] Open
Abstract
STUDY QUESTION Do gene-gene and gene-environment interactions in folate-homocysteine (Hcy) pathway have a predisposing role for Down syndrome (DS)? SUMMARY ANSWER The study provides evidence that in addition to advanced age, maternal genotype, micronutrient deficiency and elevated Hcy levels, individually and in combination, are risk factors for Down syndrome. WHAT IS KNOWN ALREADY Polymorphisms in certain folate-Hcy-pathway genes (especially the T allele of MTHFR C677T), elevated Hcy and poor folate levels in mothers during pregnancy have been shown to be risk factors for Down syndrome in certain Asian populations (including the eastern region of India), while the same SNPs are not a risk factor in European populations. This conflicting situation alludes to differential gene-environment (nutrition) interactions in different populations which needs to be explored. STUDY DESIGN, SIZE, DURATION Between 2008 and 2012, 151 Down syndrome triads and 200 age-matched controls (Control mothers n = 186) were included in the study. Seven polymorphisms in six genes of folate-Hcy metabolic pathway, along with Hcy, cysteine (Cys), vitamin B12 (vit-B12) and folate levels, were analysed and compared among the case and control groups. PARTICIPANTS/MATERIALS, SETTING, METHODS Genotyping was performed by the PCR-RFLP technique. Levels of homocysteine and cysteine were measured by HPLC while vitamin B12 and folate were estimated by chemiluminescence. MAIN RESULTS AND THE ROLE OF CHANCE We demonstrate that polymorphisms in the folate-Hcy pathway genes in mothers collectively constitute a genotypic risk for DS which is effectively modified by interactions among genes and by the environment affecting folate, Hcy and vitamin B12 levels. The study also supports the idea that these maternal risk factors provide an adaptive advantage during pregnancy supporting live birth of the DS child. LIMITATIONS AND REASONS FOR CAUTION Our inability to obtain genotype and nutritional assessments of unaffected siblings of the DS children was an important limitation of the study. Also, its confinement to a specific geographic region (the eastern part) of India, and relatively small sample size is a limitation. A parallel investigation on another population could add greater authenticity to the data. WIDER IMPLICATIONS OF THE FINDINGS For mothers genetically susceptible to deliver a DS child (particularly in South Asia), peri-conceptional nutritional supplementation and antenatal care could potentially reduce the risk of a DS child. Additionally, nutritional strategies could possibly be used for better management of the symptoms of DS children. STUDY FUNDING/COMPETING INTERESTS The work is funded through Programme support for Genetic disorders by Department of Biotechnology, Government of India to R.R. The authors declare no conflict of interest.
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Affiliation(s)
- K K Sukla
- Cytogenetics Laboratory, Department of Zoology, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - S K Jaiswal
- Centre for Genetic Disorders, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - A K Rai
- Centre for Genetic Disorders, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - O P Mishra
- Department of Pediatrics, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - V Gupta
- Department of Pediatrics, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - A Kumar
- Department of Pediatrics, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - R Raman
- Cytogenetics Laboratory, Department of Zoology, Banaras Hindu University, Varanasi, Uttar Pradesh, India
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Stvolinsky SL, Fedorova TN, Berezhnoy DS, Logvinenko AA, Muzychuk OA, Inozemtsev AA. Carnosine (β-alanyl-L-histidine) increases the efficacy of learning under conditions of oxidative stress related to the development of conditioned response with negative reinforcement. NEUROCHEM J+ 2014. [DOI: 10.1134/s1819712414040096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Banerjee S, Poddar MK. Carnosine: effect on aging-induced increase in brain regional monoamine oxidase-A activity. Neurosci Res 2014; 92:62-70. [PMID: 25450310 DOI: 10.1016/j.neures.2014.09.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 08/22/2014] [Accepted: 09/25/2014] [Indexed: 11/19/2022]
Abstract
Aging is a natural biological process associated with several neurological disorders along with the biochemical changes in brain. Aim of the present investigation is to study the effect of carnosine (0.5-2.5μg/kg/day, i.t. for 21 consecutive days) on aging-induced changes in brain regional (cerebral cortex, hippocampus, hypothalamus and pons-medulla) mitochondrial monoamine oxidase-A (MAO-A) activity with its kinetic parameters. The results of the present study are: (1) The brain regional mitochondrial MAO-A activity and their kinetic parameters (except in Km of pons-medulla) were significantly increased with the increase of age (4-24 months), (2) Aging-induced increase of brain regional MAO-A activity including its Vmax were attenuated with higher dosages of carnosine (1.0-2.5μg/kg/day) and restored toward the activity that observed in young, though its lower dosage (0.5μg/kg/day) were ineffective in these brain regional MAO-A activity, (3) Carnosine at higher dosage in young rats, unlike aged rats significantly inhibited all the brain regional MAO-A activity by reducing their only Vmax excepting cerebral cortex, where Km was also significantly enhanced. These results suggest that carnosine attenuated the aging-induced increase of brain regional MAO-A activity by attenuating its kinetic parameters and restored toward the results of MAO-A activity that observed in corresponding brain regions of young rats.
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Affiliation(s)
- Soumyabrata Banerjee
- Department of Biochemistry, University of Calcutta, 35, B.C. Road, Kolkata 700 019, India
| | - Mrinal K Poddar
- Department of Biochemistry, University of Calcutta, 35, B.C. Road, Kolkata 700 019, India.
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Vishnyakova KS, Babizhayev MA, Aliper AM, Buzdin AA, Kudryavzeva AV, Yegorov YE. Stimulation of cell proliferation by carnosine: Cell and transcriptome approaches. Mol Biol 2014. [DOI: 10.1134/s0026893314050161] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Zhang H, Guo S, Zhang L, Jia L, Zhang Z, Duan H, Zhang J, Liu J, Zhang W. Treatment with carnosine reduces hypoxia-ischemia brain damage in a neonatal rat model. Eur J Pharmacol 2014; 727:174-80. [DOI: 10.1016/j.ejphar.2014.01.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Revised: 12/23/2013] [Accepted: 01/08/2014] [Indexed: 11/25/2022]
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Banerjee S, Poddar MK. Platelet monoamine oxidase-A activity and aging: effect of carnosine. J Physiol Sci 2013; 63:279-85. [PMID: 23657886 PMCID: PMC10717806 DOI: 10.1007/s12576-013-0264-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Accepted: 04/15/2013] [Indexed: 11/28/2022]
Abstract
Platelet mitochondrial MAO-A activity of male albino rats (Wistar strain) was significantly inhibited with an inhibition of its only V max during aging. This age-induced inhibition of platelet MAO-A activity became reversed following the application of higher dosages (2.0-2.5 μg/kg/day, i.t. for 21 consecutive days) of carnosine. Though carnosine at lower dosage (0.5 μg/kg/day, i.t. for 21 consecutive days) was ineffective to platelet mitochondrial MAO-A activity in both young and aged rats, at higher dosages (2.0-2.5 μg/kg/day, i.t. for 21 consecutive days) under similar condition this enzyme activity was significantly enhanced. Carnosine at 1.0 μg/kg/day, i.t. for 21 consecutive days significantly enhanced MAO-A activity only in aged (18 and 24 months) rats. These results suggest that carnosine withdraws the aging-induced inhibition of mammalian blood platelet MAO-A activity and restores its activity towards that (MAO-A activity) observed in young mammalian blood platelets.
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Affiliation(s)
- S. Banerjee
- Department of Biochemistry, University of Calcutta, 35, B.C. Road, Kolkata, 700 019 India
| | - M. K. Poddar
- Department of Biochemistry, University of Calcutta, 35, B.C. Road, Kolkata, 700 019 India
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Rybakova YS, Boldyrev AA. Effect of carnosine and related compounds on proliferation of cultured rat pheochromocytoma PC-12 cells. Bull Exp Biol Med 2013; 154:136-40. [PMID: 23330110 DOI: 10.1007/s10517-012-1894-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The study was undertaken to determine the mechanism of carnosine effect on cell proliferation. We studied the effect of carnosine and its derivatives on cell cycle progression in cultured rat pheochromocytoma cells (PC-12). It was found that 48-h incubation of PC-12 cells with carnosine in concentrations of 10-50 mM led to deceleration of cell proliferation, reduction of G0/G1 peak, and accumulation of S- and G2/M-phase cells. Methylation of the carnosine molecule by 1N-position of the imidazole ring potentiated its effect on cell proliferation. Acetylation of the carnosine molecule by free β-amino group attenuated its effect.
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Affiliation(s)
- Yu S Rybakova
- Research Center of Neurology, Russian Academy of Medical Sciences, Moscow, Russia.
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L-carnosine inhibits neuronal cell apoptosis through signal transducer and activator of transcription 3 signaling pathway after acute focal cerebral ischemia. Brain Res 2013; 1507:125-33. [DOI: 10.1016/j.brainres.2013.02.032] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Revised: 02/19/2013] [Accepted: 02/19/2013] [Indexed: 11/23/2022]
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Attanasio F, Convertino M, Magno A, Caflisch A, Corazza A, Haridas H, Esposito G, Cataldo S, Pignataro B, Milardi D, Rizzarelli E. Carnosine inhibits Aβ(42) aggregation by perturbing the H-bond network in and around the central hydrophobic cluster. Chembiochem 2013; 14:583-92. [PMID: 23440928 DOI: 10.1002/cbic.201200704] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Indexed: 02/06/2023]
Abstract
Aggregation of the amyloid-β peptide (Aβ) into fibrillar structures is a hallmark of Alzheimer's disease. Thus, preventing self-assembly of the Aβ peptide is an attractive therapeutic strategy. Here, we used experimental techniques and atomistic simulations to investigate the influence of carnosine, a dipeptide naturally occurring in the brain, on Aβ aggregation. Scanning force microscopy, circular dichroism and thioflavin T fluorescence experiments showed that carnosine does not modify the conformational features of Aβ42 but nonetheless inhibits amyloid growth. Molecular dynamics (MD) simulations indicated that carnosine interacts transiently with monomeric Aβ42 by salt bridges with charged side chains, and van der Waals contacts with residues in and around the central hydrophobic cluster ((17)LVFFA(21)). NMR experiments on the nonaggregative fragment Aβ12-28 did not evidence specific intermolecular interactions between the peptide and carnosine, in agreement with MD simulations. However, a close inspection of the spectra revealed that carnosine interferes with the local propensity of the peptide to form backbone hydrogen bonds close to the central hydrophobic cluster (residues E22, S26 and N27). Finally, MD simulations of aggregation-prone Aβ heptapeptide segments show that carnosine reduces the propensity to form intermolecular backbone hydrogen bonds in the region 18-24. Taken together, the experimental and simulation results (cumulative MD sampling of 0.2 ms) suggest that, despite the inability of carnosine to form stable contacts with Aβ, it might block the pathway toward toxic aggregates by perturbing the hydrogen bond network near residues with key roles in fibrillogenesis.
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Affiliation(s)
- Francesco Attanasio
- Istituto di Biostrutture e Bioimmagini-UOS CT, Consiglio Nazionale delle Ricerche, V.le A. Doria 6, 95125 Catania, Italy
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Zhang L, Yao K, Fan Y, He P, Wang X, Hu W, Chen Z. Carnosine protects brain microvascular endothelial cells against rotenone-induced oxidative stress injury through histamine H1and H2receptorsin vitro. Clin Exp Pharmacol Physiol 2012; 39:1019-25. [DOI: 10.1111/1440-1681.12019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 09/09/2012] [Accepted: 10/02/2012] [Indexed: 11/28/2022]
Affiliation(s)
| | - Ke Yao
- Eye Center; Second Affiliated Hospital of Zhejiang University; School of Medicine; Hangzhou; Zhejiang; China
| | | | - Ping He
- Department of Pharmacy; Second Affiliated Hospital; School of Medicine; Zhejiang University; Hangzhou; Zhejiang; China
| | | | - Weiwei Hu
- Department of Pharmacology; Key Laboratory of Medical Neurobiology of the Ministry of Health of China; Zhejiang Province Key Laboratory of Neurobiology; School of Basic Medical Sciences; College of Pharmaceutical Sciences; Zhejiang University; Hangzhou; China
| | - Zhong Chen
- Department of Pharmacology; Key Laboratory of Medical Neurobiology of the Ministry of Health of China; Zhejiang Province Key Laboratory of Neurobiology; School of Basic Medical Sciences; College of Pharmaceutical Sciences; Zhejiang University; Hangzhou; China
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Dolu N, Süer C, Artis S, Aydogan S, Bitiktaş S. Sodium Nitroprusside Does Not Prevent an Inhibitory Effect of Carnosine on Long-Term Potentiation in the Dentate Gyrus of Rats. NEUROPHYSIOLOGY+ 2012. [DOI: 10.1007/s11062-012-9290-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Stvolinsky S, Toropova K, Gordeeva M, Kazey V, Sato T, Meguro K, Boldyrev A. Carnosine and its (S)-Trolox™ derivative protect animals against oxidative stress. Amino Acids 2012; 43:165-70. [DOI: 10.1007/s00726-012-1256-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Accepted: 02/17/2012] [Indexed: 10/28/2022]
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Ohsawa M, Mutoh J, Asato M, Yamamoto S, Ono H, Hisa H, Kamei J. Carnosine has antinociceptive properties in the inflammation-induced nociceptive response in mice. Eur J Pharmacol 2012; 682:56-61. [PMID: 22366199 DOI: 10.1016/j.ejphar.2012.02.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Revised: 02/02/2012] [Accepted: 02/08/2012] [Indexed: 12/28/2022]
Abstract
Carnosine is a biologically active dipeptide that is found in fish and chicken muscle. Recent studies have revealed that carnosine has neuroprotective activity in zinc-induced neural cell apoptosis and ischemic stroke. In the present study, we examined the expression of carnosine in the spinal cord, and the antinociceptive potency of carnosine in a mouse model of inflammation-induced nociceptive pain. Immunohistochemical studies with antiserum against carnosine showed an abundance of carnosine-immunoreactivity in the dorsal horn of the mouse spinal cord. Double-immunostaining techniques revealed that carnosine was expressed in the neurons and astrocytes in the spinal cord. Oral administration of carnosine attenuated the number of writhing behaviors induced by the intraperitoneal administration of 0.6% acetic acid. Treatment with carnosine also attenuated the second phase, but not the first phase, of the nociceptive response to formalin. Moreover, intrathecal, but not intraplanter, administration of carnosine attenuated the second phase of the nociceptive response to formalin. Our immunohistochemical and behavioral data suggest that carnosine has antinociceptive effects toward inflammatory pain, which may be mediated by the attenuation of nociceptive sensitization in the spinal cord.
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Affiliation(s)
- Masahiro Ohsawa
- Second Department of Pharmacology, School of Pharmaceutical Sciences, Kyushu University of Health and Welfare, 1714-1 Yoshino-machi, Nobeoka-shi, Miyazaki 882-8508 Japan.
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Smith AE, Stout JR, Kendall KL, Fukuda DH, Cramer JT. Exercise-induced oxidative stress: the effects of β-alanine supplementation in women. Amino Acids 2011; 43:77-90. [DOI: 10.1007/s00726-011-1158-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Accepted: 11/09/2011] [Indexed: 10/15/2022]
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Kulebyakin K, Karpova L, Lakonsteva E, Krasavin M, Boldyrev A. Carnosine protects neurons against oxidative stress and modulates the time profile of MAPK cascade signaling. Amino Acids 2011; 43:91-6. [PMID: 22101981 DOI: 10.1007/s00726-011-1135-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Accepted: 10/21/2011] [Indexed: 10/15/2022]
Abstract
Carnosine is a known protector of neuronal cells against oxidative injury which prevents both apoptotic and necrotic cellular death. It was shown earlier that carnosine serves as an intracellular buffer of free radicals. Using the model of ligand-dependent oxidative stress in neurons, we have shown that homocysteine (HC) initiates long-term activation of extracellular signal regulated kinase, isoforms 1 and 2 (ERK 1/2) and Jun N-terminal kinase (JNK) which corresponds to exitotoxic effect resulting in cellular death. L-carnosine (β-alanyl-L-histidine) protects neurons from both excitotoxic effect of homocysteine and cellular death. Its analogs, β-alanyl-D-histidine (D-carnosine) and L-histidyl-β-alanine, restricted accumulation of free radicals and delayed activation of ERK1/2 and JNK in neuronal cells, but did not promote neuronal viability.
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Affiliation(s)
- Konstantin Kulebyakin
- Department of Biochemistry, School of Biology, Room 141, M.V. Lomonosov Moscow State University, Lenin's Hills, Bldg 1/12, 119992, Moscow, Russia
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Calabrese V, Cornelius C, Dinkova-Kostova AT, Iavicoli I, Di Paola R, Koverech A, Cuzzocrea S, Rizzarelli E, Calabrese EJ. Cellular stress responses, hormetic phytochemicals and vitagenes in aging and longevity. Biochim Biophys Acta Mol Basis Dis 2011; 1822:753-83. [PMID: 22108204 DOI: 10.1016/j.bbadis.2011.11.002] [Citation(s) in RCA: 280] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Revised: 10/31/2011] [Accepted: 11/01/2011] [Indexed: 12/30/2022]
Abstract
Modulation of endogenous cellular defense mechanisms represents an innovative approach to therapeutic intervention in diseases causing chronic tissue damage, such as in neurodegeneration. This paper introduces the emerging role of exogenous molecules in hormetic-based neuroprotection and the mitochondrial redox signaling concept of hormesis and its applications to the field of neuroprotection and longevity. Maintenance of optimal long-term health conditions is accomplished by a complex network of longevity assurance processes that are controlled by vitagenes, a group of genes involved in preserving cellular homeostasis during stressful conditions. Vitagenes encode for heat shock proteins (Hsp) Hsp32, Hsp70, the thioredoxin and the sirtuin protein systems. Dietary antioxidants, such as polyphenols and L-carnitine/acetyl-L-carnitine, have recently been demonstrated to be neuroprotective through the activation of hormetic pathways, including vitagenes. Hormesis provides the central underpinning of neuroprotective responses, providing a framework for explaining the common quantitative features of their dose response relationships, their mechanistic foundations, their relationship to the concept of biological plasticity as well as providing a key insight for improving the accuracy of the therapeutic dose of pharmaceutical agents within the highly heterogeneous human population. This paper describes in mechanistic detail how hormetic dose responses are mediated for endogenous cellular defense pathways including sirtuin, Nrfs and related pathways that integrate adaptive stress responses in the prevention of neurodegenerative diseases. This article is part of a Special Issue entitled: Antioxidants and Antioxidant Treatment in Disease.
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Guerra-Crespo M, Pérez-Monter C, Janga SC, Castillo-Ramírez S, Gutiérrez-Rios RM, Joseph-Bravo P, Pérez-Martínez L, Charli JL. Transcriptional profiling of fetal hypothalamic TRH neurons. BMC Genomics 2011; 12:222. [PMID: 21569245 PMCID: PMC3126781 DOI: 10.1186/1471-2164-12-222] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2010] [Accepted: 05/10/2011] [Indexed: 01/08/2023] Open
Abstract
Background During murine hypothalamic development, different neuroendocrine cell phenotypes are generated in overlapping periods; this suggests that cell-type specific developmental programs operate to achieve complete maturation. A balance between programs that include cell proliferation, cell cycle withdrawal as well as epigenetic regulation of gene expression characterizes neurogenesis. Thyrotropin releasing hormone (TRH) is a peptide that regulates energy homeostasis and autonomic responses. To better understand the molecular mechanisms underlying TRH neuron development, we performed a genome wide study of its transcriptome during fetal hypothalamic development. Results In primary cultures, TRH cells constitute 2% of the total fetal hypothalamic cell population. To purify these cells, we took advantage of the fact that the segment spanning -774 to +84 bp of the Trh gene regulatory region confers specific expression of the green fluorescent protein (GFP) in the TRH cells. Transfected TRH cells were purified by fluorescence activated cell sorting, various cell preparations pooled, and their transcriptome compared to that of GFP- hypothalamic cells. TRH cells undergoing the terminal phase of differentiation, expressed genes implicated in protein biosynthesis, intracellular signaling and transcriptional control. Among the transcription-associated transcripts, we identified the transcription factors Klf4, Klf10 and Atf3, which were previously uncharacterized within the hypothalamus. Conclusion To our knowledge, this is one of the first reports identifying transcripts with a potentially important role during the development of a specific hypothalamic neuronal phenotype. This genome-scale study forms a rational foundation for identifying genes that might participate in the development and function of hypothalamic TRH neurons.
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Affiliation(s)
- Magdalena Guerra-Crespo
- Departamento de Genética y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, Morelos
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Asperger A, Renner C, Menzel M, Gebhardt R, Meixensberger J, Gaunitz F. Identification of Factors Involved in the Anti-Tumor Activity of Carnosine on Glioblastomas Using a Proteomics Approach. Cancer Invest 2011; 29:272-81. [DOI: 10.3109/07357907.2010.550666] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Suer C, Dolu N, Artis AS, Sahin L, Aydogan S. Electrophysiological evidence of biphasic action of carnosine on long-term potentiation in urethane-anesthetized rats. Neuropeptides 2011; 45:77-81. [PMID: 21163526 DOI: 10.1016/j.npep.2010.11.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2010] [Revised: 11/24/2010] [Accepted: 11/24/2010] [Indexed: 10/18/2022]
Abstract
Carnosine is a dipeptide synthesized by the carnosine synthetase from β-alanine and l-histidine. The well-known effects of carnosine may be related with mechanisms producing long-term potentiation which is one of the electrophysiological signs of memory. In the present study we aimed to investigate the effect of four different doses of carnosine on long-term potentiation in urethane-anesthetized rat. A bipolar stimulating electrode was placed in the medial perforant path and a double-barrel glass micropipette was placed in the dentate gyrus as the recording electrode. Artificial cerebrospinal fluid (in the control group) or carnosine (0.1, 1, 10, and 100μg/μL) was infused into the dentate gyrus. Our results showed that the I/O curve of the excitatory postsynaptic potential slope or population spike amplitude was not significantly shifted by carnosine. We found that population spike amplitude increased to 244% and 287% at the dose of 100μg/μL in the post-tetanic and induction phases, respectively, but decreased to 163% and 186% at the dose of 0.1μg/μL and to 145% and 162% at the dose of 1μg/μL when compared with 203% and 232% of the control values. However, there were no significant differences for the slope of excitatory postsynaptic potential. Carnosine had no effect on the EPSP slope or PS amplitude recorded from the dentate gyrus in response to test stimuli when high-frequency stimulation was not delivered. In the present study, we speculated that the effects of carnosine in lower or higher doses could be explained by its effect on different processes, such as soluble guanylyl cyclase inhibition or the conversion of carnosine into histamine.
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Affiliation(s)
- Cem Suer
- Department of Physiology, Faculty of Medicine, Erciyes University, 38039 Kayseri, Turkey.
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Pfister F, Riedl E, Wang Q, vom Hagen F, Deinzer M, Harmsen MC, Molema G, Yard B, Feng Y, Hammes HP. Oral Carnosine Supplementation Prevents Vascular Damage in Experimental Diabetic Retinopathy. Cell Physiol Biochem 2011; 28:125-36. [DOI: 10.1159/000331721] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/14/2011] [Indexed: 11/19/2022] Open
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Tuncay E, Bilginoglu A, Sozmen NN, Zeydanli EN, Ugur M, Vassort G, Turan B. Intracellular free zinc during cardiac excitation-contraction cycle: calcium and redox dependencies. Cardiovasc Res 2010; 89:634-42. [PMID: 21062918 DOI: 10.1093/cvr/cvq352] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
AIMS Zinc exists in biological systems as bound and histochemically reactive free Zn(2+). It is an essential structural constituent of many proteins, including enzymes from cellular signalling pathways, in which it functions as a signalling molecule. In cardiomyocytes at rest, Zn(2+) concentration is in the nanomolar range. Very little is known about precise mechanisms controlling the intracellular distribution of Zn(2+) and its variations during cardiac function. METHODS AND RESULTS Live-cell detection of intracellular Zn(2+) has become feasible through the recent development of Zn(2+)-sensitive and -selective fluorophores able to distinguish Zn(2+) from Ca(2+). Here, in freshly isolated rat cardiomyocytes, we investigated the rapid changes in Zn(2+) homeostasis using the Zn(2+)-specific fluorescent dye, FluoZin-3, in comparison to Ca(2+)-dependent fluo-3 fluorescence. Zn(2+) sparks and Zn(2+) transients, in quiescent and electrically stimulated cardiomyocytes, respectively, were visualized in a similar manner to known rapid Ca(2+) changes. Both Zn(2+) sparks and Zn(2+) transients required Ca(2+) entry. Inhibiting the sarcoplasmic reticulum Ca(2+) release or increasing the Ca(2+) load in a low-Na(+) solution suppressed or increased Zn(2+) movements, respectively. Mitochondrial inhibitors slightly reduced both Zn(2+) sparks and Zn(2+) transients. Oxidation by H₂O₂ facilitated and acidic pH inhibited the Ca(2+)-dependent Zn(2+) release. CONCLUSION It is proposed that Zn(2+) release during the cardiac cycle results mostly from intracellular free Ca(2+) increase, triggering production of reactive oxygen species that induce changes in metal-binding properties of metallothioneins and other redox-active proteins, aside from ionic exchange on these proteins.
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Affiliation(s)
- Erkan Tuncay
- Department of Biophysics, Faculty of Medicine, Ankara University, Ankara 06100, Turkey
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Cheng J, Wang F, Yu DF, Wu PF, Chen JG. The cytotoxic mechanism of malondialdehyde and protective effect of carnosine via protein cross-linking/mitochondrial dysfunction/reactive oxygen species/MAPK pathway in neurons. Eur J Pharmacol 2010; 650:184-94. [PMID: 20868662 DOI: 10.1016/j.ejphar.2010.09.033] [Citation(s) in RCA: 249] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2010] [Revised: 07/25/2010] [Accepted: 09/14/2010] [Indexed: 11/25/2022]
Abstract
The accumulation of malondialdehyde (MDA), a lipid peroxidation by-product that has been used as an indicator of cellular oxidation status, is significantly increased in many neurological diseases such as brain ischemia/reperfusion, Alzheimer's disease and Parkinson's disease in vivo. In the present study, we found that MDA treatment in vitro reduced cortical neuronal viability in a time- and dose-dependent manner and induced cellular apoptosis as well as necrosis simultaneously. Furthermore, exposure to MDA led to accumulation of intracellular reactive oxygen species, dysfunction of mitochondria (denoted by the loss of mitochondrial transmembrane potential (Δψm)) and activation of JNK and ERK. Carnosine exhibited better protection against MDA-induced cell injury than antioxidant N-acetyl-cysteine (NAC) with its multi-potency, which alleviated MDA-induced protein cross-linking, Δψm decrease, reactive oxygen species burst, JNK and ERK activation. In conclusion, our results suggest that MDA induced cell injury in vitro via protein cross-linking and successive mitochondrial dysfunction, and the activation of reactive oxygen species-dependent MAPK signaling pathway. Carnosine alleviated all these alterations induced by MDA, but NAC merely inhibited Bcl-2 family-related activation of JNK and ERK. These results prompt the possibility that carnosine, but not other conventional antioxidants, can protect neurons against MDA-induced injury through decomposition of protein cross-linking toxicity and may serve as a novel agent in the treatment of neurodegenerative diseases.
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Affiliation(s)
- Jin Cheng
- Department of Pharmacology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
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Shen Y, He P, Fan YY, Zhang JX, Yan HJ, Hu WW, Ohtsu H, Chen Z. Carnosine protects against permanent cerebral ischemia in histidine decarboxylase knockout mice by reducing glutamate excitotoxicity. Free Radic Biol Med 2010; 48:727-35. [PMID: 20043985 DOI: 10.1016/j.freeradbiomed.2009.12.021] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2009] [Revised: 12/14/2009] [Accepted: 12/22/2009] [Indexed: 11/17/2022]
Abstract
Recently, we showed that carnosine protects against NMDA-induced excitotoxicity in differentiated PC12 cells through a histaminergic pathway. However, whether the protective effect of the carnosine metabolic pathway also occurs in ischemic brain is unknown. Utilizing the model of permanent middle cerebral artery occlusion (pMCAO) in mice, we found that carnosine significantly improved neurological function and decreased infarct size in both histidine decarboxylase knockout and the corresponding wild-type mice to the same extent. Carnosine decreased the glutamate levels and preserved the expression of glutamate transporter-1 (GLT-1) but not the glutamate/aspartate transporter in astrocytes exposed to ischemia in vivo and in vitro. It suppressed the dissipation of Delta Psi(m) and generation of mitochondrial reactive oxygen species (ROS) induced by oxygen-glucose deprivation in astrocytes. Furthermore, carnosine also decreased the mitochondrial ROS and reversed the decrease in GLT-1 induced by rotenone. These findings are the first to demonstrate that the mechanism of carnosine action in pMCAO may not be mediated by the histaminergic pathway, but by reducing glutamate excitotoxicity through the effective regulation of the expression of GLT-1 in astrocytes due to improved mitochondrial function. Thus, our study reveals a novel antiexcitotoxic agent in ischemic injury.
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Affiliation(s)
- Yao Shen
- Institute of Molecular and Cellular Medicine, Wenzhou Medical College, Wenzhou 325035, China
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Süer C, Dolu N, Artis S, Aydogan S. Effects of carnosine on long-term plasticity of medial perforant pathway/dentate gyrus synapses in urethane-anesthetized rats: an in vivo model. Exp Brain Res 2009; 197:135-42. [DOI: 10.1007/s00221-009-1899-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2009] [Accepted: 06/08/2009] [Indexed: 11/28/2022]
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Boldyrev AA. Molecular mechanisms of homocysteine toxicity. BIOCHEMISTRY (MOSCOW) 2009; 74:589-98. [DOI: 10.1134/s0006297909060017] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Pekcetin C, Kiray M, Ergur BU, Tugyan K, Bagriyanik HA, Erbil G, Baykara B, Camsari UM. Carnosine attenuates oxidative stress and apoptosis in transient cerebral ischemia in rats. ACTA BIOLOGICA HUNGARICA 2009; 60:137-48. [PMID: 19584023 DOI: 10.1556/abiol.60.2009.2.1] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Cerebral ischemia leads to cognitive decline and neuronal damage in the hippocampus. Reactive oxygen species (ROS) play an important role in the neuronal loss after cerebral ischemia and reperfusion injury. Carnosine has both antioxidant and neuroprotective effects against ROS. In the present study, the effects of carnosine on oxidative stress, apoptotic neuronal cell death and spatial memory following transient cerebral ischemia in rats were investigated. Transient ischemia was induced by occlusion of right common carotid artery of rats for 30 min and reperfusion for 24 h or 1 week. Rats received intraperitoneal injection of 250 mg/kg carnosine or saline 30 min prior to experiment. Determination of antioxidant enzyme activities was performed spectrophotometrically. To detect apoptotic cells, TUNEL staining was performed using an In Situ Cell Death Detection Kit. Carnosine treatment elicited a significant decrease in lipid peroxidation and increase in antioxidant enzyme activities in ischemic rat brains. The number of TUNEL-positive cells was decreased significantly in carnosine-treated group when compared with the ischemia-induction group. Carnosine treatment did not provide significant protection from ischemia induced deficits in spatial learning. The results show that carnosine is effective as a prophylactic treatment for brain tissue when it is administered before ischemia without affecting spatial memory.
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Affiliation(s)
- C Pekcetin
- Department of Histology & Embryology, Dokuz Eylul University Medical School, Balcova, Izmir 35340, Turkey
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Senut MC, Azher S, Margolis FL, Patel K, Mousa A, Majid A. Distribution of carnosine-like peptides in the nervous system of developing and adult zebrafish (Danio rerio) and embryonic effects of chronic carnosine exposure. Cell Tissue Res 2009; 337:45-61. [PMID: 19440736 DOI: 10.1007/s00441-009-0796-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2009] [Accepted: 03/18/2009] [Indexed: 12/11/2022]
Abstract
Carnosine-like peptides (carnosine-LP) are a family of histidine derivatives that are present in the nervous system of various species and that exhibit antioxidant, anti-matrix-metalloproteinase, anti-excitotoxic, and free-radical scavenging properties. They are also neuroprotective in animal models of cerebral ischemia. Although the function of carnosine-LP is largely unknown, the hypothesis has been advanced that they play a role in the developing nervous system. Since the zebrafish is an excellent vertebrate model for studying development and disease, we have examined the distribution pattern of carnosine-LP in the adult and developing zebrafish. In the adult, immunoreactivity for carnosine-LP is specifically concentrated in sensory neurons and non-sensory cells of the olfactory epithelium, the olfactory nerve, and the olfactory bulb. Robust staining has also been observed in the retinal outer nuclear layer and the corneal epithelium. Developmental studies have revealed immunostaining for carnosine-LP as early as 18 h, 24 h, and 7 days post-fertilization in, respectively, the olfactory, corneal, and retinal primordia. These data suggest that carnosine-LP are involved in olfactory and visual function. We have also investigated the effects of chronic (7 days) exposure to carnosine on embryonic development and show that 0.01 microM to 10 mM concentrations of carnosine do not elicit significant deleterious effects. Conversely, treatment with 100 mM carnosine results in developmental delay and compromised larval survival. These results indicate that, at lower concentrations, exogenously administered carnosine can be used to explore the role of carnosine in development and developmental disorders of the nervous system.
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Affiliation(s)
- Marie-Claude Senut
- Division of Cerebrovascular Diseases, Department of Neurology and Ophthalmology, Michigan State University, A-217 Clinical Center, East Lansing, MI 48824, USA.
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Oh YM, Jang EH, Ko JH, Kang JH, Park CS, Han SB, Kim JS, Kim KH, Pie JE, Shin DW. Inhibition of 6-hydroxydopamine-induced endoplasmic reticulum stress by l-carnosine in SH-SY5Y cells. Neurosci Lett 2009; 459:7-10. [PMID: 19394406 DOI: 10.1016/j.neulet.2009.04.047] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2009] [Revised: 04/12/2009] [Accepted: 04/14/2009] [Indexed: 11/30/2022]
Abstract
Conditions that cause endoplasmic reticulum malfunction (ER stress) play a key role in the development of various human diseases including neurodegenerative diseases. Carnosine is an endogenous peptide, present in excitable tissues such as brain and skeletal muscle. Although there are reports suggesting that carnosine has a biological role independent of its antioxidant activity, there have been no reports of the effects of carnosine on the ER stress response. We investigated the effects of carnosine on 6-hydroxydopamine (6-OHDA)-induced cell death and ER stress in SH-SY5Y cells. After assessing control cell viability in serum-free conditions for 24h (100% viability), we found that 50 microM 6-OHDA reduced cell viability to 76.4% of control values, whereas addition of 10mM carnosine significantly reduced cell death to 96.1% viability in a dose-dependent manner. Consistent with its cytoprotective action, carnosine markedly inhibited subsequent ER stress responses, including phosphorylation of eukaryotic initiation factor 2alpha (eIF2alpha) and c-jun, expression of glucose regulatory protein 78 and C/EBP homologous protein, and mRNA splicing of X-box protein 1. The measurement of reactive oxygen species (ROS) generation by 6-OHDA showed that addition of 10mM carnosine slightly but obviously inhibits the 6-OHDA-induced ROS production. In conclusion, our results show that carnosine almost completely inhibits 6-OHDA-induced ER stress responses and cytotoxicity, and that slight antioxidant activity of carnosine against 6-OHDA is observed. Further in vivo studies are needed to investigate clinical uses for carnosine.
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Affiliation(s)
- Yun-Mi Oh
- Department of Pharmacology and Medicinal Toxicological Research Center, Inha Research Institute for Medical Sciences, Republic of Korea
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Hipkiss AR. Carnosine and its possible roles in nutrition and health. ADVANCES IN FOOD AND NUTRITION RESEARCH 2009; 57:87-154. [PMID: 19595386 DOI: 10.1016/s1043-4526(09)57003-9] [Citation(s) in RCA: 150] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The dipeptide carnosine has been observed to exert antiaging activity at cellular and whole animal levels. This review discusses the possible mechanisms by which carnosine may exert antiaging action and considers whether the dipeptide could be beneficial to humans. Carnosine's possible biological activities include scavenger of reactive oxygen species (ROS) and reactive nitrogen species (RNS), chelator of zinc and copper ions, and antiglycating and anticross-linking activities. Carnosine's ability to react with deleterious aldehydes such as malondialdehyde, methylglyoxal, hydroxynonenal, and acetaldehyde may also contribute to its protective functions. Physiologically carnosine may help to suppress some secondary complications of diabetes, and the deleterious consequences of ischemic-reperfusion injury, most likely due to antioxidation and carbonyl-scavenging functions. Other, and much more speculative, possible functions of carnosine considered include transglutaminase inhibition, stimulation of proteolysis mediated via effects on proteasome activity or induction of protease and stress-protein gene expression, upregulation of corticosteroid synthesis, stimulation of protein repair, and effects on ADP-ribose metabolism associated with sirtuin and poly-ADP-ribose polymerase (PARP) activities. Evidence for carnosine's possible protective action against secondary diabetic complications, neurodegeneration, cancer, and other age-related pathologies is briefly discussed.
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Affiliation(s)
- Alan R Hipkiss
- School of Clinicial and Experimental Medicine, College of Medical and Dental Sciences, The Univeristy of Birmingham, Edgbaston, Birmingham, UK
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Colocalization of a carnosine-splitting enzyme, tissue carnosinase (CN2)/cytosolic non-specific dipeptidase 2 (CNDP2), with histidine decarboxylase in the tuberomammillary nucleus of the hypothalamus. Neurosci Lett 2008; 445:166-9. [DOI: 10.1016/j.neulet.2008.09.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2008] [Revised: 09/03/2008] [Accepted: 09/03/2008] [Indexed: 11/18/2022]
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Min J, Senut MC, Rajanikant K, Greenberg E, Bandagi R, Zemke D, Mousa A, Kassab M, Farooq MU, Gupta R, Majid A. Differential neuroprotective effects of carnosine, anserine, and N-acetyl carnosine against permanent focal ischemia. J Neurosci Res 2008; 86:2984-91. [PMID: 18543335 PMCID: PMC2805719 DOI: 10.1002/jnr.21744] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Carnosine (beta-alanyl-L-histidine) has been shown to exhibit neuroprotection in rodent models of cerebral ischemia. In the present study, we further characterized the effects of carnosine treatment in a mouse model of permanent focal cerebral ischemia and compared them with its related peptides anserine and N-acetylated carnosine. We also evaluated the efficacy of bestatin, a carnosinase inhibitor, in ameliorating ischemic brain damage. Permanent focal cerebral ischemia was induced by occlusion of the middle cerebral artery (pMCAO). Mice were subsequently randomly assigned to receive an intraperitoneal injection of vehicle (0.9% saline), carnosine, N-acetyl carnosine, anserine, bestatin alone, or bestatin with carnosine. Infarct size was examined using 2,3,5-triphenyltetrazolium chloride staining 1, 3, and 7 days following pMCAO, and neurological function was evaluated using an 18-point-based scale. Brain levels of carnosine were measured in treated mice using high-performance liquid chromatography 1 day following pMCAO. We demonstrated that treatment with carnosine, but not its analogues, was able to significantly reduce infarct volume and improve neurological function compared with those in vehicle-treated mice. These beneficial effects were maintained for 7 days post-pMCAO. In contrast, compared with the vehicle-treated group, bestatin-treated mice displayed an increase in the severity of ischemic lesion, which was prevented by the addition of carnosine. These new data further characterize the neuroprotective effects of carnosine and suggest that carnosine may be an attractive candidate for testing as a stroke therapy.
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Affiliation(s)
- Jiangyong Min
- Division of Cerebrovascular Diseases, Department of Neurology and Ophthalmology, Michigan State University, East Lansing, Michigan
| | - Marie-Claude Senut
- Division of Cerebrovascular Diseases, Department of Neurology and Ophthalmology, Michigan State University, East Lansing, Michigan
| | - Krishnamurthy Rajanikant
- Division of Cerebrovascular Diseases, Department of Neurology and Ophthalmology, Michigan State University, East Lansing, Michigan
| | - Eric Greenberg
- Division of Cerebrovascular Diseases, Department of Neurology and Ophthalmology, Michigan State University, East Lansing, Michigan
| | - Ram Bandagi
- Division of Cerebrovascular Diseases, Department of Neurology and Ophthalmology, Michigan State University, East Lansing, Michigan
| | - Daniel Zemke
- Division of Cerebrovascular Diseases, Department of Neurology and Ophthalmology, Michigan State University, East Lansing, Michigan
| | - Ahmad Mousa
- Division of Cerebrovascular Diseases, Department of Neurology and Ophthalmology, Michigan State University, East Lansing, Michigan
| | - Mounzer Kassab
- Division of Cerebrovascular Diseases, Department of Neurology and Ophthalmology, Michigan State University, East Lansing, Michigan
| | - Muhammad U. Farooq
- Division of Cerebrovascular Diseases, Department of Neurology and Ophthalmology, Michigan State University, East Lansing, Michigan
| | - Rishi Gupta
- Division of Cerebrovascular Diseases, Department of Neurology and Ophthalmology, Michigan State University, East Lansing, Michigan
| | - Arshad Majid
- Division of Cerebrovascular Diseases, Department of Neurology and Ophthalmology, Michigan State University, East Lansing, Michigan
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Velez S, Nair NG, Reddy VP. Transition metal ion binding studies of carnosine and histidine: Biologically relevant antioxidants. Colloids Surf B Biointerfaces 2008; 66:291-4. [DOI: 10.1016/j.colsurfb.2008.06.012] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2008] [Revised: 06/14/2008] [Accepted: 06/16/2008] [Indexed: 11/28/2022]
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Protection by Histidine Dipeptides against Acrolein-induced Neurofilament-L Aggregation. B KOREAN CHEM SOC 2008. [DOI: 10.5012/bkcs.2008.29.9.1732] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kozan R, Sefil F, Bağirici F. Anticonvulsant effect of carnosine on penicillin-induced epileptiform activity in rats. Brain Res 2008; 1239:249-55. [PMID: 18773880 DOI: 10.1016/j.brainres.2008.08.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2008] [Revised: 08/08/2008] [Accepted: 08/08/2008] [Indexed: 10/21/2022]
Abstract
Carnosine is a compound of naturally-occurring dipeptide that synthesized by the carnosine synthetase from beta-alanine and l-histidine. Recent reports claim that carnosine plays an important role in the control of epilepsy but its involvement in anticonvulsant functions remains unknown. In this study, we investigated the effects of carnosine in a rat model of epilepsy using the intracortical penicillin injection method. Thirty minutes after penicillin injection, the doses of 125, 250, 500, 1000 mg/kg carnosine and 90 min before penicillin injection the dose of 500 mg/kg carnosine were administered intraperitoneally. The epileptiform activity was verified by electrocorticographic (ECoG) recordings. The mean spike frequency of penicillin-induced epileptiform activity was significantly decreased in all carnosine-treated rats when compared with those of penicillin-injected. The dose of 500 mg/kg for carnosine treated and pretreated rats was found to be the most effective dose in reducing the frequency of penicillin-induced epileptiform activity. There was no significant difference in the mean onset of epileptiform activity between penicillin and 500 mg/kg carnosine pretreated groups. These findings indicate that carnosine has an anticonvulsant effect on penicillin-induced epilepsy in rats. Thus, our data support the hypothesis that carnosine may be a potential anticonvulsant drug for clinical therapy of epilepsy in the future.
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Affiliation(s)
- Ramazan Kozan
- Department of Physiology, Faculty of Medicine, Mustafa Kemal University, 31100 Hatay, Turkey
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Sozio P, Iannitelli A, Cerasa LS, Cacciatore I, Cornacchia C, Giorgioni G, Ricciutelli M, Nasuti C, Cantalamessa F, Di Stefano A. New L‐Dopa Codrugs as Potential Antiparkinson Agents. Arch Pharm (Weinheim) 2008; 341:412-7. [DOI: 10.1002/ardp.200700228] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Fouad AA, Morsy MA, Gomaa W. Protective effect of carnosine against cisplatin-induced nephrotoxicity in mice. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2008; 25:292-297. [PMID: 21783865 DOI: 10.1016/j.etap.2007.10.026] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2007] [Revised: 10/07/2007] [Accepted: 10/11/2007] [Indexed: 05/31/2023]
Abstract
The nephroprotective effect of the natural antioxidant carnosine was evaluated in mice with cisplatin-induced acute renal damage, in which generation of reactive oxygen species plays a major role. Nephrotoxicity was induced by a single i.p. injection of cisplatin (20mg/kg). Carnosine was administered for six consecutive days in a dose of 10mg/kg/day, i.p., starting 3 days before cisplatin injection. The results revealed that carnosine treatment significantly reduced blood urea nitrogen and serum creatinine levels elevated by cisplatin administration. Also, carnosine significantly attenuated cisplatin-induced increase in malondialdehyde and decrease in reduced glutathione, and catalase and superoxide dismutase activities in renal cortical homogenates. Additionally, histopathological examination and scoring showed that carnosine markedly ameliorated cisplatin-induced renal tubular necrosis. In conclusion, carnosine can be considered a feasible candidate to protect against nephrotoxicity commonly encountered with cisplatin treatment.
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Affiliation(s)
- Amr A Fouad
- Department of Pharmacology, Faculty of Medicine, Minia University, El-Minia, Egypt
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50
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Protective Effects of Carnosine and N-Acetylcarnosine on Salsolinol-mediated Cu,Zn-superoxide Dismutase Inactivation. B KOREAN CHEM SOC 2007. [DOI: 10.5012/bkcs.2007.28.10.1881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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