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Yang P, Shi M, Jia Y, Zhong C, Peng H, Sun L, Guo D, Chen J, Wang A, Xu T, Zhu Z, Zhang Y, He J. Plasma Polyamines and Short-Term Adverse Outcomes Among Patients With Ischemic Stroke: A Prospective Cohort Study. J Am Heart Assoc 2024; 13:e035837. [PMID: 39082415 DOI: 10.1161/jaha.124.035837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Accepted: 07/01/2024] [Indexed: 08/07/2024]
Abstract
BACKGROUND Polyamines have been reported to be associated with neurological function, but the associations between polyamines and the prognosis of ischemic stroke remain unclear. We aimed to prospectively investigate whether elevated plasma polyamine levels are associated with adverse outcomes in patients with ischemic stroke. METHODS AND RESULTS Plasma polyamine levels were measured at admission in 3570 patients with acute ischemic stroke, and clinical outcomes were assessed at 3 months after stroke onset. The primary outcome was a composite outcome of death and major disability (modified Rankin Scale score≥3), and secondary outcomes included the individual outcomes of death and major disability. During a 3-month follow-up period, 877 participants (25.1%) experienced the primary outcome. Increased putrescines were associated with a decreased risk of the primary outcome (the highest versus the lowest tertile: odds ratio, 0.72 [95% CI, 0.58-0.91]; P=0.005) and major disability (odds ratio, 0.59 [95% CI, 0.47-0.74]; P<0.001). Conversely, increased spermidines were associated with an increased risk of death (hazard ratio, 1.86 [95% CI, 1.10-3.14]; P=0.020), and increased spermines were associated with an increased risk of the primary outcome (odds ratio, 1.36 [95% CI, 1.08-1.71]; P=0.009) and major disability (odds ratio, 1.27 [95% CI, 1.01-1.59]; P=0.041). CONCLUSIONS Among patients with ischemic stroke, high plasma putrescine levels were associated with a decreased risk of adverse outcomes, whereas high plasma spermidine and spermine levels were associated with an increased risk of adverse outcomes. Further studies are needed to investigate whether targeting these polyamines can improve the prognosis of patients with ischemic stroke. REGISTRATION https://clinicaltrials.gov. Identifier: NCT01840072.
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Affiliation(s)
- Pinni Yang
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases Suzhou Medical College of Soochow University Suzhou China
| | - Mengyao Shi
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases Suzhou Medical College of Soochow University Suzhou China
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA USA
| | - Yiming Jia
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases Suzhou Medical College of Soochow University Suzhou China
| | - Chongke Zhong
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases Suzhou Medical College of Soochow University Suzhou China
| | - Hao Peng
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases Suzhou Medical College of Soochow University Suzhou China
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA USA
| | - Lulu Sun
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases Suzhou Medical College of Soochow University Suzhou China
| | - Daoxia Guo
- School of Nursing Suzhou Medical College of Soochow University Suzhou China
| | - Jing Chen
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA USA
- Department of Medicine Tulane University School of Medicine New Orleans LA USA
| | - Aili Wang
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases Suzhou Medical College of Soochow University Suzhou China
| | - Tan Xu
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases Suzhou Medical College of Soochow University Suzhou China
| | - Zhengbao Zhu
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases Suzhou Medical College of Soochow University Suzhou China
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA USA
| | - Yonghong Zhang
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases Suzhou Medical College of Soochow University Suzhou China
| | - Jiang He
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA USA
- Department of Medicine Tulane University School of Medicine New Orleans LA USA
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Dulam V, Katta S, Nakka VP. Stroke and Distal Organ Damage: Exploring Brain-Kidney Crosstalk. Neurochem Res 2024; 49:1617-1627. [PMID: 38376748 DOI: 10.1007/s11064-024-04126-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 02/11/2024] [Accepted: 02/13/2024] [Indexed: 02/21/2024]
Abstract
Stroke and kidney dysfunction represent significant public health challenges, yet the precise mechanisms connecting these conditions and their severe consequences remain unclear. Individuals experiencing chronic kidney disease (CKD) and acute kidney injury (AKI) are at heightened susceptibility to experiencing repeated strokes. Similarly, a reduced glomerular filtration rate is associated with an elevated risk of suffering a stroke. Prior strokes independently contribute to mortality, end-stage kidney disease, and cardiovascular complications, underscoring the pathological connection between the brain and the kidneys. In cases of AKI, various mechanisms, such as cytokine signaling, leukocyte infiltration, and oxidative stress, establish communication between the brain and the kidneys. The bidirectional relationship between stroke and kidney pathologies involves key factors such as uremic toxins, proteinuria, inflammatory responses, decreased glomerular filtration, impairment of the blood-brain barrier (BBB), oxidative stress, and metabolites produced by the gut microbiota. This review examines potential mechanisms of brain-kidney crosstalk underlying stroke and kidney diseases. It holds significance for comprehending multi-organ dysfunction associated with stroke and for formulating therapeutic strategies to address stroke-induced kidney dysfunction and the bidirectional pathological connection between the kidney and stroke.
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Affiliation(s)
- Vandana Dulam
- Department of Biochemistry, Acharya Nagarjuna University, Andhra Pradesh, 522510, India
| | - Sireesha Katta
- Department of Biochemistry, Acharya Nagarjuna University, Andhra Pradesh, 522510, India
| | - Venkata Prasuja Nakka
- Department of Biochemistry, Acharya Nagarjuna University, Andhra Pradesh, 522510, India.
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Soda K. Changes in Whole Blood Polyamine Levels and Their Background in Age-Related Diseases and Healthy Longevity. Biomedicines 2023; 11:2827. [PMID: 37893199 PMCID: PMC10604715 DOI: 10.3390/biomedicines11102827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 10/13/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
The relationship between polyamines and healthy longevity has received much attention in recent years. However, conducting research without understanding the properties of polyamines can lead to unexpected pitfalls. The most fundamental consideration in conducting polyamine studies is that bovine serum used for cell culture contains bovine serum amine oxidase. Bovine serum amine oxidase, which is not inactivated by heat treatment, breaks down spermine and spermidine to produce the highly toxic aldehyde acrolein, which causes cell damage and activates autophagy. However, no such enzyme activity has been found in humans. Polyamine catabolism does not produce toxic aldehydes under normal conditions, but inflammation and some pathogens provoke an inducible enzyme, spermine oxidase, which only breaks down spermine to produce acrolein, resulting in cytotoxicity and the activation of autophagy. Therefore, spermine oxidase activation reduces spermine concentration and the ratio of spermine to spermidine, a feature recently reported in patients with age-related diseases. Spermine, which is increased by a long-term, continuous high polyamine diet, suppresses aberrant gene methylation and the pro-inflammatory status that progress with age and are strongly associated with the development of several age-related diseases and senescence. Changes in spermine concentration and the spermine/spermidine ratio should be considered as indicators of human health status.
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Affiliation(s)
- Kuniyasu Soda
- Saitama Medical Center, Jichi Medical University, Saitama 330-8503, Japan;
- Saitama Ken-o Hospital, Saitama 363-0008, Japan
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4
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Positive Correlation between Relative Concentration of Spermine to Spermidine in Whole Blood and Skeletal Muscle Mass Index: A Possible Indicator of Sarcopenia and Prognosis of Hemodialysis Patients. Biomedicines 2023; 11:biomedicines11030746. [PMID: 36979725 PMCID: PMC10045508 DOI: 10.3390/biomedicines11030746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 02/17/2023] [Accepted: 02/24/2023] [Indexed: 03/06/2023] Open
Abstract
Several mechanisms strictly regulate polyamine concentration, and blood polyamines are excreted in urine. This indicates polyamine accumulation in renal dysfunction, and studies have shown increased blood polyamine concentrations in patients with renal failure. Hemodialysis (HD) may compensate for polyamine excretion; however, little is known about polyamine excretion. We measured whole-blood polyamine levels in patients on HD and examined the relationship between polyamine concentrations and indicators associated with health status. Study participants were 59 hemodialysis patients (median age: 70.0 years) at Minami-Uonuma City Hospital and 26 healthy volunteers (median age: 44.5 years). Whole-blood spermidine levels were higher and spermine/spermidine ratio (SPM/SPD) was lower in hemodialysis patients. Hemodialysis showed SPD efflux into the dialysate; however, blood polyamine levels were not altered by hemodialysis and appeared to be minimally excreted. The skeletal muscle mass index (SMI), which was positively correlated with hand grip strength and serum albumin level, was positively correlated with SPM/SPD. Given that sarcopenia and low serum albumin levels are reported risk factors for poor prognosis in HD patients, whole blood SPM/SPD in hemodialysis patients may be a new indicator of the prognosis and health status of HD patients.
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Zhang R, Xu J, Li R, Yu Z, Yuan W, Gao H, Feng W, Gu C, Sun Z, Zheng L. Association between Serum Spermidine and TyG Index: Results from a Cross-Sectional Study. Nutrients 2022; 14:nu14183847. [PMID: 36145224 PMCID: PMC9500746 DOI: 10.3390/nu14183847] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 09/13/2022] [Accepted: 09/14/2022] [Indexed: 12/30/2022] Open
Abstract
Background: Although animal experiments have shown that spermidine (SPD) affects insulin resistance (IR), the evidence for this in humans is still scarce. We aimed to investigate the associations between serum SPD levels and the TyG index in the adult population. Methods: A cross-sectional study was carried out with 4336 participants, all of whom were adults aged 35+ years. The SPD levels in serum were detected using high performance liquid chromatography with a fluorescence detector (HPLC-FLD). The triglyceride-glucose (TyG) index was calculated as Ln [fasting triglycerides (TG) (mg/dL) × fasting glucose (mg/dL)/2]. Results: After multivariable adjustment, including demographic characteristics, behavioral factors associated with heath, and a history of taking medicine, SPD was inversely associated with the TyG index (β = −0.036; SE: 0.009; p < 0.001). Furthermore, each increase of 1 lnSPD significantly decreased the risk of IR with an odds ratio (ORs) (95% confidence intervals (CIs)) of 0.89 (0.83−0.96). Relative to the first quintile, the multivariate-adjusted ORs (95% CIs) for the third and fourth quartile group were 0.80 (0.65, 0.99) and 0.71 (0.57, 0.88), respectively. Conclusions: In conclusion, SPD was inversely associated with the TyG index. Our findings inform future exploratory research on the further mechanism of the association between spermidine and IR.
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Affiliation(s)
- Rui Zhang
- College of Public Health, Shanghai University of Medicine and Health Sciences, Shanghai 201318, China
- Correspondence: (R.Z.); (L.Z.); Tel./Fax: +86-21-65881635 (R.Z.); +86-21-63846590 (L.Z.)
| | - Jiahui Xu
- Ministry of Education-Shanghai Key Laboratory of Children’s Environmental Health, School of Public Health, Shanghai Jiao Tong University School of Medicine, 227 Chongqing South Road, Huangpu District, Shanghai 200025, China
- Infectious Disease Prevention and Control Center, Hohhot Center for Disease Control and Prevention, Hohhot 010070, China
| | - Ruixue Li
- School of Public Health, China Medical University, Shenyang 110122, China
| | - Zhecong Yu
- School of Public Health, China Medical University, Shenyang 110122, China
| | - Wei Yuan
- School of Public Health, China Medical University, Shenyang 110122, China
| | - Hanshu Gao
- School of Public Health, China Medical University, Shenyang 110122, China
| | - Wenjing Feng
- School of Public Health, China Medical University, Shenyang 110122, China
| | - Cuiying Gu
- School of Public Health, China Medical University, Shenyang 110122, China
| | - Zhaoqing Sun
- Department of Cardiology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Liqiang Zheng
- Ministry of Education-Shanghai Key Laboratory of Children’s Environmental Health, School of Public Health, Shanghai Jiao Tong University School of Medicine, 227 Chongqing South Road, Huangpu District, Shanghai 200025, China
- Correspondence: (R.Z.); (L.Z.); Tel./Fax: +86-21-65881635 (R.Z.); +86-21-63846590 (L.Z.)
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Zheng L, Xie Y, Sun Z, Zhang R, Ma Y, Xu J, Zheng J, Xu Q, Li Z, Guo X, Sun G, Xing F, Sun Y, Wen D. Serum Spermidine in Relation to Risk of Stroke: A Multilevel Study. Front Nutr 2022; 9:843616. [PMID: 35464025 PMCID: PMC9021784 DOI: 10.3389/fnut.2022.843616] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 02/28/2022] [Indexed: 12/29/2022] Open
Abstract
The relationship between serum spermidine levels and future cardiovascular disease risk has not yet been well elucidated in the general population based on community studies. Using a nested case-control study, we estimated the association between serum spermidine level and future stroke. New stroke cases had higher baseline levels of spermidine than controls [182.8 (141.8–231.5) vs. 152.0 (124.3–193.0), P < 0.001]. After multivariable adjustment, individuals with spermidine ≥ 205.9 nmol/L (T3) higher risks of stroke (HR 5.02, 95% CI 1.58–16.02) with the lowest quartile (< 136.9 nmol/L) as reference. The association between serum spermidine levels and risk of stroke seemed to be consistent and was reproducible in our cross-sectional studies. In addition, comparisons of the areas under receiver operator characteristics curves confirmed that a model including spermidine had better discrimination than without (0.755 vs. 0.715, P = 0.04). Here we report a close relationship exists between serum spermidine levels and risk of stroke.
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Affiliation(s)
- Liqiang Zheng
- School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China
- Department of Health Policy and Hospital Management, Shengjing Hospital of China Medical University, Shenyang, China
- *Correspondence: Liqiang Zheng,
| | - Yanxia Xie
- National Office for Maternal and Child Health Surveillance of China, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Zhaoqing Sun
- Department of Cardiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Rui Zhang
- College of Public Health, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Yanan Ma
- Department of Biostatistics and Epidemiology, School of Public Health, China Medical University, Shenyang, China
- Institute of Health Sciences, China Medical University, Shenyang, China
| | - Jiahui Xu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China
- Department of Health Policy and Hospital Management, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jia Zheng
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China
- Department of Health Policy and Hospital Management, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qianyi Xu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China
- Department of Health Policy and Hospital Management, Shengjing Hospital of China Medical University, Shenyang, China
| | - Zhao Li
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Xiaofan Guo
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Guozhe Sun
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Fuguo Xing
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yingxian Sun
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, China
- Yingxian Sun,
| | - Deliang Wen
- Institute of Health Sciences, China Medical University, Shenyang, China
- Deliang Wen,
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7
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Fouda AY, Eldahshan W, Narayanan SP, Caldwell RW, Caldwell RB. Arginase Pathway in Acute Retina and Brain Injury: Therapeutic Opportunities and Unexplored Avenues. Front Pharmacol 2020; 11:277. [PMID: 32256357 PMCID: PMC7090321 DOI: 10.3389/fphar.2020.00277] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 02/26/2020] [Indexed: 12/20/2022] Open
Abstract
Ischemic retinopathies represent a major cause of visual impairment and blindness. They include diabetic retinopathy (DR), acute glaucoma, retinopathy of prematurity (ROP), and central (or branch) retinal artery occlusion (CRAO). These conditions share in common a period of ischemia or reduced blood supply to the retinal tissue that eventually leads to neuronal degeneration. Similarly, acute brain injury from ischemia or trauma leads to neurodegeneration and can have devastating consequences in patients with stroke or traumatic brain injury (TBI). In all of these conditions, current treatment strategies are limited by their lack of effectiveness, adverse effects or short time window for administration. Therefore, there is a great need to identify new therapies for acute central nervous system (CNS) injury. In this brief review article, we focus on the pathway of the arginase enzyme as a novel therapeutic target for acute CNS injury. We review the recent work on the role of arginase enzyme and its downstream components in neuroprotection in both retina and brain acute injury models. Delineating the similarities and differences between the role of arginase in the retina and brain neurodegeneration will allow for better understanding of the role of arginase in CNS disorders. This will also facilitate repurposing the arginase pathway as a new therapeutic target in both retina and brain diseases.
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Affiliation(s)
- Abdelrahman Y Fouda
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA, United States.,Culver Vision Discovery Institute, Medical College of Georgia, Augusta University, Augusta, GA, United States.,Charlie Norwood VA Medical Center, Augusta, GA, United States.,Clinical Pharmacy Department, Faculty of Pharmacy, Cairo University, Giza, Egypt
| | - Wael Eldahshan
- Department of Pharmacology and Toxicology, Medical College of Georgia, Augusta University, Augusta, GA, United States
| | - S Priya Narayanan
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA, United States.,Culver Vision Discovery Institute, Medical College of Georgia, Augusta University, Augusta, GA, United States.,Charlie Norwood VA Medical Center, Augusta, GA, United States.,Department of Clinical and Administrative Pharmacy, University of Georgia, Athens, GA, United States
| | - R William Caldwell
- Culver Vision Discovery Institute, Medical College of Georgia, Augusta University, Augusta, GA, United States.,Department of Pharmacology and Toxicology, Medical College of Georgia, Augusta University, Augusta, GA, United States
| | - Ruth B Caldwell
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA, United States.,Culver Vision Discovery Institute, Medical College of Georgia, Augusta University, Augusta, GA, United States.,Charlie Norwood VA Medical Center, Augusta, GA, United States.,Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA, United States
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8
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Zhang Y, Yin J, Zhang L, Qi CC, Ma ZL, Gao LP, Wang DG, Jing YH. Spermidine preconditioning ameliorates laurate-induced brain injury by maintaining mitochondrial stability. Neurol Res 2017; 39:248-258. [DOI: 10.1080/01616412.2017.1283830] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Yi Zhang
- Department of Neurology, People Hospital of Gansu Province, Lanzhou, P.R. China
| | - Jie Yin
- School of Basic Medical Sciences, Institute of Anatomy and Histology & Embryology, Neuroscience, Lanzhou University, Lanzhou, P.R. China
| | - Lang Zhang
- School of Basic Medical Sciences, Institute of Anatomy and Histology & Embryology, Neuroscience, Lanzhou University, Lanzhou, P.R. China
| | - Chu-Chu Qi
- School of Basic Medical Sciences, Institute of Anatomy and Histology & Embryology, Neuroscience, Lanzhou University, Lanzhou, P.R. China
| | - Ze-Lin Ma
- School of Basic Medical Sciences, Institute of Biochemistry and Molecular Biology, Lanzhou University, Lanzhou, P.R. China
| | - Li-Ping Gao
- School of Basic Medical Sciences, Institute of Biochemistry and Molecular Biology, Lanzhou University, Lanzhou, P.R. China
| | - De-Gui Wang
- School of Basic Medical Sciences, Institute of Anatomy and Histology & Embryology, Neuroscience, Lanzhou University, Lanzhou, P.R. China
| | - Yu-Hong Jing
- School of Basic Medical Sciences, Institute of Anatomy and Histology & Embryology, Neuroscience, Lanzhou University, Lanzhou, P.R. China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, P.R. China
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9
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Nayak AR, Badar SR, Lande N, Kawle AP, Kabra DP, Chandak NH, Raje DV, Singh LR, Daginawala HF, Kashyap RS. Prediction of Outcome in Diabetic Acute Ischemic Stroke Patients: A Hospital-Based Pilot Study Report. Ann Neurosci 2016; 23:199-208. [PMID: 27780987 DOI: 10.1159/000449480] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 06/18/2016] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Demographic and clinical characteristics are known to influence the outcome in acute ischemic stroke (AIS) patients. PURPOSE This study is aimed at evaluating short- and long-term outcomes in diabetic AIS patients. In addition, the study also evaluates the impact of diabetes on the performance of indigenously reported biomarker, inter-alpha-trypsin inhibitor heavy chain 4 (ITIH4) and known biomarkers, neuron-specific enolase (NSE) and glial-derived S-100 beta beta protein (S-100ββ). METHODS This study was performed on 29 diabetes and 75 non-diabetes AIS patients. Outcome of AIS patients was analyzed by using modified Rankin scale at discharge, then at 12 and 18 months after discharge. Based on the obtained scores, patients were classified as improved group (scales 1-3) and dependent/expired group (scales 3-6). Blood samples were collected during admission and at discharge/expired time. Levels of NSE, S100ββ, and ITIH4 were analyzed in all samples. RESULTS On discharge, frequencies of dependent/expired outcome were 4/29 (14%) and 19/75 (17%) in diabetic and non-diabetic AIS patients. However, follow-up outcome at 12 and 18 months showed higher dependent/expired cases of 43 and 41% among diabetic AIS patients compared to 27 and 21% in non-diabetic patients. Multivariate analysis revealed that diabetes is an independent risk factor for dependent/expired outcome in AIS patients (OR 0.484 (at discharge); 1.307 (at 12 months) and 1.675 (at 18 months)). NSE, S100ββ, and ITIH4 showed a differential expression in both the outcome groups of AIS patients, irrespective of diabetes. CONCLUSION Diabetes increases the risk of dependent/expired outcome in AIS patients. Also, serum NSE, S100ββ, and ITIH4 are independent biomarkers for prognosis of outcome in AIS patients, irrespective of diabetes.
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Affiliation(s)
- Amit R Nayak
- Biochemistry Research Centre, Central India Institute of Medical Sciences, Bajaj Nagar, Nagpur, India
| | - Shweta R Badar
- MDS Bioanalytics Pvt. Ltd., Sakar Enclave, Nagpur, India
| | - Neha Lande
- Biochemistry Research Centre, Central India Institute of Medical Sciences, Bajaj Nagar, Nagpur, India
| | - Anuja P Kawle
- Biochemistry Research Centre, Central India Institute of Medical Sciences, Bajaj Nagar, Nagpur, India
| | - Dinesh P Kabra
- Biochemistry Research Centre, Central India Institute of Medical Sciences, Bajaj Nagar, Nagpur, India
| | - Nitin H Chandak
- Biochemistry Research Centre, Central India Institute of Medical Sciences, Bajaj Nagar, Nagpur, India
| | | | - Lokendra R Singh
- Biochemistry Research Centre, Central India Institute of Medical Sciences, Bajaj Nagar, Nagpur, India
| | - Hatim F Daginawala
- Biochemistry Research Centre, Central India Institute of Medical Sciences, Bajaj Nagar, Nagpur, India
| | - Rajpal S Kashyap
- Biochemistry Research Centre, Central India Institute of Medical Sciences, Bajaj Nagar, Nagpur, India
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Restoration of Polyamine Metabolic Patterns in In Vivo and In Vitro Model of Ischemic Stroke following Human Mesenchymal Stem Cell Treatment. Stem Cells Int 2016; 2016:4612531. [PMID: 27413379 PMCID: PMC4927980 DOI: 10.1155/2016/4612531] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 04/22/2016] [Accepted: 05/04/2016] [Indexed: 11/17/2022] Open
Abstract
We investigated changes in PA levels by the treatment of human bone-marrow-derived mesenchymal stem cells (hBM-MSCs) in ischemic stroke in rat brain model and in cultured neuronal SH-SY5Y cells exposed to oxygen-glucose deprivation (OGD). In ischemic rat model, transient middle cerebral artery occlusion (MCAo) was performed for 2 h, followed by intravenous transplantation of hBM-MSCs or phosphate-buffered saline (PBS) the day following MCAo. Metabolic profiling analysis of PAs was examined in brains from three groups: control rats, PBS-treated MCAo rats (MCAo), and hBM-MSCs-treated MCAo rats (MCAo + hBM-MSCs). In ischemic cell model, SH-SY5Y cells were exposed to OGD for 24 h, treated with hBM-MSCs (OGD + hBM-MSCs) prior to continued aerobic incubation, and then samples were collected after coculture for 72 h. In the in vivo MCAo ischemic model, levels of some PAs in brain samples of the MCAo and MCAo + hBM-MSCs groups were significantly different from those of the control group. In particular, putrescine, cadaverine, and spermidine in brain tissues of the MCAo + hBM-MSCs group were significantly reduced in comparison to those in the MCAo group. In the in vitro OGD system, N1-acetylspermidine, spermidine, N1-acetylspermine, and spermine in cells of the OGD + hBM-MSCs group were significantly reduced compared to those of OGD group.
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11
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Shakeri M, Mahdkhah A, Panahi F. S100B Protein as a Post-traumatic Biomarker for Prediction of Brain Death in Association With Patient Outcomes. ARCHIVES OF TRAUMA RESEARCH 2013; 2:76-80. [PMID: 24396798 PMCID: PMC3876553 DOI: 10.5812/atr.8549] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 02/26/2013] [Accepted: 03/25/2013] [Indexed: 11/16/2022]
Abstract
BACKGROUND S100B is a calcium-binding protein, belonging to the S100 family proteins which are characterized by their high solubility and, currently, comprises 21 members which are expressed in a cell-specific manner. If we can predict the possibility of definite brain death after brain injury, we will rescue some organs of body to transplant proposes. OBJECTIVES In this regard our study focused on the S100B protein value in predicting brain death after head trauma. In this study, the use of serum level of protein S100, 24 hours after trauma has been considered as a reliable index for predicting brain death. PATIENTS AND METHODS 72 patients (50 male and 22 female) aged 5 - 80 years old (median 40 ± 17.72 years) with severe head traumas (GCS≤8) were recruited in this cross-sectional study. Glasgow Coma Scale (GCS) and computed tomography (CT) scan findings were recorded for all patients, and then a single 5mL blood sample was obtained from each patient on admission, after 48 hours and a week later or after brain death to determine the level of S100B protein. RESULTS Primary and the last GCS of patients had a predictive value in determining brain death (P < 0.0005), also there was a significant correlation between GCS and level of S100B protein. There was a significant correlation between CT scan findings and S100B protein only after 48 hours of trauma. CONCLUSIONS Changes in S100B protein, especially the levels of this dimer 48 hours after trauma can be used as marker to predict brain death. Alongside other known prognostic factors such as age, GCS and diameters of the pupils, however, this factor individually can not conclusive predict the patient's clinical course and incidence of brain death. However, it is suitable to use GCS, CT scan, clinical symptoms and biomarkers together for a perfect prediction of brain death.
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Affiliation(s)
- Moslem Shakeri
- Department of Neurosurgery, Tabriz University of Medical
Sciences, Tabriz, IR Iran
| | - Atta Mahdkhah
- Department of Neurosurgery, Tabriz University of Medical
Sciences, Tabriz, IR Iran
| | - Farid Panahi
- Neurosciences Reserch Center, Tabriz University of Medical
Sciences, Tabriz, IR Iran
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12
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Effects of carnosine on polyamine levels in red blood cells of patients with hypertonic discirculatory encephalopathy. Bull Exp Biol Med 2013; 154:210-2. [PMID: 23330127 DOI: 10.1007/s10517-012-1914-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The levels of polyamines (putrescine, spermine, spermidine) in erythrocytes from patients with hypertonic discirculatory encephalopathy are reduced (by 37, 45, and 50%, respectively) in comparison with the corresponding parameters in the control group. Addition of carnosine to the treatment protocol for chronic brain ischemia normalized the content of putrescine and spermine. The mechanisms of carnosine influence on polyamine metabolism are discussed: trapping of acrolein, end-product of polyamine oxidation, and compensation of NMDA-receptor excitotoxicity.
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13
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Jin HT, Lamsa T, Merentie M, Hyvonen MT, Sand J, Raty S, Herzig KH, Alhonen L, Nordback I. Polyamine levels in the pancreas and the blood change according to the severity of pancreatitis. Pancreatology 2008; 8:15-24. [PMID: 18235212 DOI: 10.1159/000114851] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2006] [Accepted: 06/06/2007] [Indexed: 12/11/2022]
Abstract
BACKGROUND/AIMS Polyamines are essential to survival, growth, and proliferation of mammalian cells. Previous studies have suggested that the pancreatic polyamine levels may change in acute pancreatitis. In this study, the changes of polyamine levels in the pancreas have been studied with respect to the severity of pancreatitis. We investigated whether there is a relationship in polyamine levels between pancreas and blood, and whether pancreatic and blood polyamine levels change according to the severity of pancreatitis. METHODS In rats, sublethal pancreatitis was induced by intraductal infusion of 2% taurodeoxycholate, while lethal pancreatitis was induced with 6% taurodeoxycholate. RESULTS Infusion of 6% taurodeoxycholate as compared with 2% resulted in more severe pancreatitis, as revealed by mortality, histology, and serum amylase activity. Pancreatic spermidine/spermine N(1)-acetyltransferase was induced early after pancreatitis and was associated with increased putrescine and decreased spermidine levels. The extent of pancreatic necrosis significantly correlated with the polyamine catabolism indicators pancreatic putrescine/spermidine ratio (r = 0.29, p < 0.01) and pancreatic putrescine/spermine ratio (r = 0.32, p < 0.01). The two pancreatic polyamine ratios correlated well also with the red blood cell polyamine ratios (r = 0.75 and r = 0.72, respectively, both p < 0.01). Furthermore, the extent of pancreatic necrosis correlated with red blood cell putrescine/spermidine (r = 0.32, p < 0.01) and putrescine/spermine (r = 0.37, p < 0.01) ratios. CONCLUSIONS Acute experimental pancreatitis is associated with an early pancreatic spermidine/spermine N(1)-acetyltransferase induction and consequent changes in polyamine levels in pancreas and red blood cells, depending on the severity of pancreatitis. Because changes in red blood cell spermidine, spermine, and putrescine levels evolve already early during the time course of pancreatitis, and correlate with the extent of pancreatic necrosis, their clinical value as early markers of the severity of acute pancreatitis needs to be further evaluated. and IAP.
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Affiliation(s)
- Hai-Tao Jin
- Department of Gastroenterology and Alimentary Tract Surgery, Tampere University Hospital, Tampere, Finland
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14
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Haapaniemi E, Helenius J, Soinne L, Syrjälä M, Kaste M, Tatlisumak T. Serial measurements of plasma homocysteine levels in early and late phases of ischemic stroke. Eur J Neurol 2007; 14:12-7. [PMID: 17222107 DOI: 10.1111/j.1468-1331.2006.01518.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
High plasma levels of homocysteine (Hcy) may predispose to ischemic stroke (IS), but results of previous studies have been conflicting. We decided to determine in IS patients whether their Hcy levels are elevated, whether levels vary at different time points following stroke, whether levels are associated with stroke severity, outcome, recurrence, etiology, infarct volume, or risk factors, and whether levels are correlated with hemostatic factors or C-reactive protein values. We measured plasma Hcy levels in 102 consecutive IS patients on admission and at 1 week, 1 month, and 3 months after stroke and once in 102 control subjects. Hemostatic factors were measured in 55 patients. Compared with controls, plasma Hcy levels in patients were significantly lower on admission but not at later time points, with levels increasing by week and remaining at this level for 3 months. Hcy levels showed a positive correlation with age and a negative correlation with Mini-Mental State Examination (MMSE) scores. Plasma Hcy levels inversely correlated with plasminogen activator inhibitor type-1. Decreased Hcy levels on admission may reflect the strength of the acute-phase response rather than a pathogenetic event. The negative correlation between Hcy levels and MMSE scores is more probably age-related than stroke-related.
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Affiliation(s)
- E Haapaniemi
- Department of Neurology, Helsinki University Central Hospital, Helsinki, Finland.
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15
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Lima JE, Walz R, Tort A, Souza D, Portela L, Bianchin MM, Takayanagui OM, Leite JP. Serum and cerebrospinal fluid S100B concentrations in patients with neurocysticercosis. Braz J Med Biol Res 2006; 39:129-35. [PMID: 16400473 DOI: 10.1590/s0100-879x2006000100015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The clinical manifestations of neurocysticercosis (NC) are varied and depend on the number and location of cysts, as well as on the host immune response. Symptoms usually occur in NC when cysticerci enter a degenerative course associated with an inflammatory response. The expression of brain damage markers may be expected to increase during this phase. S100B is a calcium-binding protein produced and released predominantly by astrocytes that has been used as a marker of reactive gliosis and astrocytic death in many pathological conditions. The aim of the present study was to investigate the levels of S100B in patients in different phases of NC evolution. Cerebrospinal fluid and serum S100B concentrations were measured in 25 patients with NC: 14 patients with degenerative cysts (D), 8 patients with viable cysts (V) and 3 patients with inactive cysts. All NC patients, except 1, had five or less cysts. In most of them, symptoms had been present for at least 1 month before sample collection. Samples from 8 normal controls (C) were also assayed. The albumin quotient was used to estimate the blood-brain barrier permeability. There were no significant differences in serum (P = 0.5) or cerebrospinal fluid (P = 0.91) S100B levels among the V, D, and C groups. These findings suggest that parenchymal changes associated with a relatively small number of degenerating cysts probably have a negligible impact on glial tissue.
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Affiliation(s)
- J E Lima
- Departamento de Neurologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
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16
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Virgili M, Crochemore C, Peña-Altamira E, Contestabile A. Regional and temporal alterations of ODC/polyamine system during ALS-like neurodegenerative motor syndrome in G93A transgenic mice. Neurochem Int 2005; 48:201-7. [PMID: 16290266 DOI: 10.1016/j.neuint.2005.10.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2005] [Accepted: 10/05/2005] [Indexed: 11/22/2022]
Abstract
Natural polyamines (putrescine, spermidine and spermine) are ubiquitous molecules known to regulate a number of physiological processes and suspected to play a role also in various pathological conditions. Changes in polyamine levels and in their biosynthetic enzymes have been described for some neurodegenerative diseases but the available data are incomplete and somewhat contradictory. We report here alterations of the key enzyme of the polyamine pathway, ornithine decarboxylase (ODC) catalytic activity and polyamine levels in different CNS areas from SOD1 G39A transgenic mice, an animal model for amyotrophic lateral sclerosis (ALS). ODC catalytic activity, was found significantly increased both in the cervical and lumbar spinal cord and, to a lesser extent in the brain stem of transgenic mice at a symptomatic stage of the disease (125-day-old mice), while no differences were present at a pre-symptomatic stage (55-day-old mice). In parallel with the increase of ODC activity putrescine levels were several times increased in both cervical and lumbar spinal cord and in the brain stem of 125-day-old SOD1 G39A mice. Higher order polyamines were not increased except for a significant increase of spermidine in the cervical spinal cord. The present data demonstrate considerable alterations of the ODC/polyamine system in a reliable animal model of ASL, consistent with their role in neurodegeneration and in particular in motor neuron diseases.
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Affiliation(s)
- Marco Virgili
- Department of Biology, University of Bologna, Via Selmi 3, 40126 Bologna, Italy
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17
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Gugliucci A. Polyamines as clinical laboratory tools. Clin Chim Acta 2005; 344:23-35. [PMID: 15149868 DOI: 10.1016/j.cccn.2004.02.022] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2004] [Revised: 02/25/2004] [Accepted: 02/25/2004] [Indexed: 12/12/2022]
Abstract
Since their discovery by Antoni van Leeuwenhoek in 1678 until the recent development of transgenic mice expressing proteins altering polyamine levels in a tissue-specific manner, polyamines have been the object of intense research efforts which have shed light on several biological and pathological processes. From the discovery of a particular form of proteasome regulation of the catabolism of the key regulatory enzyme in their synthetic pathway, to the experimental cancer treatment or prevention with polyamine antagonists or inhibitors of the latter enzyme, a whole spectrum of interests can be revealed. Still, many aspects of their functions remain elusive and difficulties inherent in their analysis, which relies on sophisticated high-performance liquid chromatographic (HPLC) methods, and the lack of standardization; have hampered the transit from the research realm to the standard clinical laboratory domain. Their assay in biological fluids has been used for cancer diagnosis and for monitoring anticancer treatment. In this article, we attempt to provide an overview of polyamine structure, nutritional value, metabolism, and physiological roles. Next, we will summarize the main analytical methods on which we count, and finally we will address their role in diagnosis of cancer as well their proposed role as antioxidant and antiglycation agents.
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Affiliation(s)
- A Gugliucci
- Laboratory of Biochemistry, Division of Basic Medical Sciences, Touro University College of Osteopathic Medicine, 1310 Johnson Lane, Mare Island, Vallejo, CA 94592, USA.
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18
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Babu GN, Sailor KA, Beck J, Sun D, Dempsey RJ. Ornithine decarboxylase activity in in vivo and in vitro models of cerebral ischemia. Neurochem Res 2004; 28:1851-7. [PMID: 14649727 DOI: 10.1023/a:1026123809033] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Ornithine decarboxylase (ODC) is considered the rate-limiting enzyme in polyamine biosynthesis, and an increase in putrescine after central nervous system (CNS) injury appears to be involved in neuronal death. Cerebral ischemia and reperfusion trigger an active series of metabolic events, which eventually lead to neuronal death. In the present study, ODC activity was evaluated following transient focal cerebral ischemia and reperfusion in rat. The middle cerebral artery (MCA) was occluded for 2 h in male rats with an intraluminal suture technique. Animals were sacrificed between 3 and 48 h of reperfusion following MCA occlusion, and ODC activity was assayed in cortex and striatum. ODC activity was also estimated in an in vitro ischemia model using primary rat cortical neuron cultures, at 6-24 h reoxygenation following 1 h oxygen-glucose deprivation (OGD). In cortex, following ischemia, ODC activity was increased at 3 h (P < .05), reached peak levels by 6-9 h (P < .001) and returned to sham levels by 48 h reperfusion. In striatum the ODC activity followed a similar time course, but returned to basal levels by 24 h. This suggests that ODC activity is upregulated in rat CNS following transient focal ischemia and its time course of activation is region specific. In vitro, ODC activity showed a significant rise only at 24 h reoxygenation following ischemic insult. The release of lactate dehydrogenase (LDH), an indicator for cell damage, was also significantly elevated after OGD. 0.25 mM alpha-difluoromethylornithine (DFMO) inhibited ischemia-induced ODC activity, whereas a 10-mM dose of DFMO appears to provide some neuroprotection by suppressing both ODC activity and LDH release in neuronal cultures, suggesting the involvement of polyamines in the development of neuronal cell death.
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Affiliation(s)
- G Nagesh Babu
- Department of Neurology, SGPG Institute of Medical Sciences, Lucknow, UP, 226014, India.
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19
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Abstract
Based on previous studies which suggest that blood polyamines fluctuate during the menstrual cycle, the present study was set to determine whether plasma concentrations of the polyamine spermine show menstrual cycle-associated changes and if so, how these changes relate to phasic variations in other female hormones. Blood samples were collected from a group of 9 healthy women of various ages at 5 defined periods during their menstrual cycle including 1 woman on oral contraceptives. Spermine concentrations were determined in plasma acid extracts by reversed-phase high performance liquid chromatography method. Plasma estradiol, LH and FSH were measured by microparticle enzyme immunoassay using an automatic analyzer. Spermine concentrations, 104.4 +/- 12.2 nmol/ml at 1-3 day of the cycle, were increased transiently with a peak (263.8 +/- 22.1 nmol/ml) at 8-10 day and declined to 85.4 +/- 29.8 nmol/ml by 21-23 day of the cycle. The peak spermine concentrations coincided with the first increase in plasma estrogen levels. The individual variations in the temporal profile of spermine concentrations were of similar magnitude as individual differences in other female hormones. We conclude that: a) Plasma spermine concentrations undergo distinct cyclic alterations during the menstrual cycle with peak concentrations coinciding with the first estradiol increase, and b) Peak plasma spermine concentrations occur during the follicular phase, just prior to ovulation, during the period of rapid endometrial growth.
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Affiliation(s)
- Varda H Gilad
- Research and Development, Laboratory of Neuroscience, Assaf Harofeh Medical Center, P.O. Beer Yaakov, Zrifin 70300, Israel.
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20
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Diler AS, Ziylan YZ, Uzum G, Lefauconnier JM, Seylaz J, Pinard E. Passage of spermidine across the blood-brain barrier in short recirculation periods following global cerebral ischemia: effects of mild hyperthermia. Neurosci Res 2002; 43:335-42. [PMID: 12135777 DOI: 10.1016/s0168-0102(02)00059-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Transport of a polyamine (PA), spermidine (SPMD) into rat brain at various early postischemic periods was studied. Rats underwent 20 min of four-vessel occlusion (4VO) followed by 5, 10, 30 and 60 min of recirculation (RC) periods with natural brain temperature. 3H-aminoisobutyricacid (AIB) and 14C-SPMD were utilised to search dual functions of the blood-brain barrier (BBB); barrier and carrier functions, respectively. Unidirectional blood-to-brain transfer constant (Kin) was calculated for AIB and SPMD in four brain regions-parieto-temporal cortex, striatum, hippocampus and cerebellum. Kin for SPMD ranged between 1.2+/-0.3 x 10(3) ml g(-1) min(-1) (for striatum) and 2.2+/-0.4 x 10(3) ml g(-1) min(-1) (for cerebellum) in controls. Kin for AIB showed similar values. At 5 and 10 min RC periods, Kin for both substances increased in a non-specific manner in all brain regions studied. In the cortex, Kin for SPMD at 5 and 10 min RC periods were 3.2+/-0.4 x 10(3) and 2.9+/-0.3 x 10(3) ml g(-1) min(-1), respectively, and found to be maximum with respect to other brain regions studied. 30 and 60 min RC groups showed specific transport for SPMD, whilst there were no changes for Kin for AIB, in all brain regions studied. Hippocampus showed the maximum increase in Kin SPMD at 60 min RC (2.7+/-0.3 x 10(3) ml g(-1) min(-1)), corresponding to a percentage rise of 121%. Intraischemic mild brain hyperthermia (39 degrees C) gave rise to a striking increase in Kin at 60 min postischemia for both substances. These results suggest that there is a specific transport of SPMD into brain at 30 and 60 min RC periods following 20 min of forebrain ischemia. Moreover, dual functions of the BBB were perturbed with intracerebral mild hyperthermia during ischemia.
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Affiliation(s)
- A S Diler
- Department of Medical Biology, Istanbul Faculty of Medicine, Capa, 34390 Istanbul, Turkey
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Adibhatla RM, Hatcher JF, Sailor K, Dempsey RJ. Polyamines and central nervous system injury: spermine and spermidine decrease following transient focal cerebral ischemia in spontaneously hypertensive rats. Brain Res 2002; 938:81-6. [PMID: 12031538 DOI: 10.1016/s0006-8993(02)02447-2] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Polyamines (putrescine, spermidine and spermine) are ubiquitous cellular components, but their specific role in central nervous system (CNS) injury has yet to be characterized. CNS injury results in increased activities of ornithine decarboxylase and spermidine/spermine-N(1)-acetyltransferase, and accumulation of putrescine. The present study determined the polyamine profile in three models of CNS injury, in two different species (gerbil and rat) and two strains of rats (Sprague-Dawley and spontaneously hypertensive): (1) transient focal cerebral ischemia in spontaneously hypertensive rats (SHR); (2) traumatic brain injury in Sprague-Dawley rats; and (3) transient forebrain ischemia in gerbils. While there was a significant increase in putrescine in all three models, spermine and spermidine levels were unaltered in forebrain ischemia and traumatic brain injury. However, transient focal cerebral ischemia shows depletion of spermine and spermidine levels in injured hemisphere compared to contralateral region. Exogenous spermine significantly restored the spermine as well as spermidine levels in the ipsilateral hemisphere after transient focal cerebral ischemia, but did not alter putrescine levels or the ratio of spermidine to spermine. The loss of spermine in particular, may have several consequences that contribute to ischemic injury, including destabilization of chromatin, decreased mitochondrial Ca(2+) buffering capacity, and increased susceptibility to oxidative stress. Based on our and other studies, we propose a tentative antioxidant mechanism of spermine neuroprotection.
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Affiliation(s)
- Rao Muralikrishna Adibhatla
- Department of Neurological Surgery, H4-330, Clinical Science Center, 600 Highland Avenue, University of Wisconsin-Madison, Madison, WI 53792-3232, USA.
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