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Hyperhomocysteinemia

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https://www.readbyqxmd.com/read/29032752/association-between-apolipoproteins-ai-and-b-and-ultrasound-indicators-of-carotid-atherosclerosis
#1
Zeljko Zivanovic, Ivana Divjak, Mirjana Jovicevic, Tamara Rabi-Zikic, Biljana Radovanovic, Svetlana Ruzicka-Kaloci, Djordje Stevan Popovic, Edita Stokic, Ksenija Gebauer-Bukurov, Katarina Zivanovic-Vujcic, Petar Slankamenac
BACKGROUND: Apolipoproteins A-I and B (apoA-I and apoB) may be better indicators of the risk of cardiovascular and cerebrovascular diseases than conventional risk factors (RFs). The onset of ischemic stroke (IS) may be preceded by the development of atherosclerotic changes in carotid arteries, which can be detected by ultrasound. Only a certain % of patients with IS have an (underlying) carotid etiology. OBJECTIVE: The aim of our study was to determine the association between ultrasound indicators of carotid atherosclerosis and the presence of apolipoproteins and other biomarkers in patients with IS...
October 10, 2017: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/29029082/decreased-homocysteine-trans-sulfuration-in-hypertension-with-hyperhomocysteinemia-relationship-with-insulin-resistance
#2
Paolo Tessari, Monica Vettore, Lucia Puricelli, Diego Cecchet, Anna Coracina, Edward Kivanuka
Context: Homocysteine is an independent cardiovascular risk factor and is increased in essential hypertension. Insulin stimulates homocysteine catabolism in healthy individuals. However, the mechanisms of hyperhomocysteinemia and its relationship with insulin resistance in essential hypertension are unknown. Objective: To investigate whole-body methionine and homocysteine kinetics, and the effects of insulin, in essential hypertension. Design & Setting: Eight hypertensive male subjects, and six male normotensive controls, were infused with L-[methyl-2H3,1-13C]methionine for 6 hrs...
September 29, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29024723/homocysteine-concentrations-in-the-cognitive-progression-of-alzheimer-s-disease
#3
Nicolas Farina, Fredrik Jernerén, Cheryl Turner, Kathryn Hart, Naji Tabet
OBJECTIVES: Hyperhomocysteinemia in Alzheimer's disease (AD) is widely reported and appears to worsen as the disease progresses. While active dietary intervention with vitamins B12 and folate decreases homocysteine blood levels, with promising clinical outcomes in Mild Cognitive Impairment (MCI), this so far has not been replicated in established AD populations. The aim of the study is to explore the relationship between hyperhomocystenemia and relevant vitamins as the disease progresses...
October 10, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/29018979/hyperhomocysteinemia-and-cardiovascular-disease-in-animal-model
#4
REVIEW
Md Abul Kalam Azad, Pan Huang, Gang Liu, Wenkai Ren, Tsegay Teklebrh, Wenxin Yan, Xihong Zhou, Yulong Yin
Hyperhomocysteinemia is an independent risk factor for cardiovascular disease and is associated with primary causes of mortality and morbidity throughout the world. Several studies have been carried out to evaluate the effects of a diet inducing cystathionine-β-synthase, methyltetrafolate, folic acid, and vitamin B supplemented with methionine on the homocysteine metabolism and in lowering the plasma total homocysteine levels. A large number of molecular and biomedical studies in numerous animals, such as mice, rabbits, and pigs, have sought to elevate the plasma total homocysteine levels and to identify a disease model for human hyperhomocysteinemia...
October 10, 2017: Amino Acids
https://www.readbyqxmd.com/read/28987632/moderate-hyperhomocysteinemia-induced-by-short-term-dietary-methionine-overload-alters-bone-microarchitecture-and-collagen-features-during-growth
#5
Petar Milovanovic, Dragan Hrncic, Ksenija Radotic, Mira Stankovic, Dragosav Mutavdzic, Danijela Djonic, Aleksandra Rasic-Markovic, Dragan Djuric, Olivera Stanojlovic, Marija Djuric
AIMS: In general, hyperhomocysteinemia is increasingly appreciated as a risk factor for various diseases, including osteoporosis. However, its effects in non-adults remain largely unknown. Our aim was to determine whether dietary-caused increased homocysteine levels have deleterious effects on bone structure during growth. MAIN METHODS: We developed a model of moderate hyperhomocysteinemia caused by short-term methionine nutritional overload in growing rats. 30-days-old male Wistar albino rats were randomly assigned to either experimental group subject to a 30-days hypermethionine diet or control group...
October 4, 2017: Life Sciences
https://www.readbyqxmd.com/read/28986198/role-of-hyperhomocysteinemia-and-hyperuricemia-in-pathogenesis-of-atherosclerosis
#6
REVIEW
Junjie Zhao, Hailin Chen, Ning Liu, Jun Chen, Youquan Gu, Jiangjun Chen, Kui Yang
BACKGROUND: The mechanisms of hyperhomocysteinemia (HHcy) and hyperuricemia (HUA) that promote atherosclerosis were seldom explored and always indefinite. Therefore, we will discuss some new reviews about the role of HHcy and HUA in the pathogenesis of atherosclerosis. METHODS: This study was conducted by reading a lot of literature, including basic research and clinical application research. RESULTS: HHcy is known as an independent risk factor for atherosclerosis...
October 3, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28985720/effects-of-homocysteine-on-white-matter-diffusion-parameters-in-alzheimer-s-disease
#7
Chen-Chang Lee, Shih-Wei Hsu, Chi-Wei Huang, Wen-Neng Chang, Sz-Fan Chen, Ming-Kung Wu, Chiung-Chih Chang, Lain-Chyr Hwang, Po-Chou Chen
BACKGROUND: The clinical features of Alzheimer's disease (AD) are related to brain network degeneration, and hyperhomocysteinemia is related to greater white matter hyperintensities. We investigated the changes in four diffusion tensor imaging parameters in the white matter of patients with early stage AD, examined their associations with homocysteine level, and tested the clinical significance of the diffusion tensor imaging parameters and homocysteine level in correlation analysis with cognitive test scores...
October 6, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28981944/-association-of-transcobalamine-ii-gene-polymorphisms-and-serum-homocysteine-vitamin-b12-and-folate-levels-with-ulcerative-colitis-among-chinese-patients
#8
Shuzi Zheng, Hao Wu, Fangpeng Ye, Xuanping Xia, Shenglong Xia, Xiuqing Lin, Xiaoli Wu, Lijia Jiang, Ran Ding, Yi Jiang
OBJECTIVE: To assess the association of transcobalamine II (TCN2) gene polymorphisms and serum levels of homocysteine (Hcy), vitamin B12 and folate with ulcerative colitis (UC) among Chinese patients. METHODS: For 397 UC patients and 574 controls, two single nucleotide polymorphisms of the TCN2 gene (rs1801198, rs9606756) were tested with an improved multiple ligase detection reaction method. Serum Hcy, vitamin B12 and folate were measured with an enzymatic cycling assay and an chemiluminescence immunoassay, respectively...
October 10, 2017: Zhonghua Yi Xue Yi Chuan Xue za Zhi, Zhonghua Yixue Yichuanxue Zazhi, Chinese Journal of Medical Genetics
https://www.readbyqxmd.com/read/28976393/-approach-to-peripheral-arterial-disease-in-the-elderly
#9
Ozan Onur Balkanay, Suat Nail Ömeroğlu
The prevalence of peripheral arterial disease, which usually develops on the basis of atherosclerosis and develops as a result of chronic arterial occlusive pathology, increases with age. Peripheral artery disease in the elderly patient population may be asymptomatic due to restrictive conditions associated with immobilization. Concurrent cerebrovascular disease and coronary artery disease risk and mortality rates are higher in elderly patients with peripheral artery disease. The life expectancy in patients with peripheral arterial disease is worse than in prostate cancer patients...
September 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28972879/challenging-clinical-presentations-of-pernicious-anemia
#10
Thein Hlaing Oo, Cristhiam Mauricio Rojas-Hernandez
Pernicious anemia (PA) is an autoimmune disease of multifactorial etiologies characterized by autoimmune chronic atrophic gastritis, cobalamin deficiency (CD) due to defective absorption of dietary cobalamin from the terminal ileum, and by the presence of intrinsic factor and parietal cell antibodies. PA is a very common cause of CD-related anemia worldwide. Despite advances in the understanding molecular biology and pathophysiology of PA, the diagnosis of PA remains challenging in many circumstances for many clinicians because of its diverse clinical manifestations and the limitations of currently available diagnostic tools...
September 2017: Discovery Medicine
https://www.readbyqxmd.com/read/28971744/benefits-and-drawbacks-of-guanidinoacetic-acid-as-a-possible-treatment-to-replenish-cerebral-creatine-in-agat-deficiency
#11
Sergej M Ostojic
Arginine-glycine amidinotransferase (AGAT) deficiency is a rare inherited metabolic disorder that severely affects brain bioenergetics. Characterized by mental retardation, language impairment, and behavioral disorders, AGAT deficiency is a treatable condition, where long-term creatine supplementation usually restores brain creatine levels and improves its clinical features. In some cases of AGAT deficiency, creatine treatment might be somewhat limited due to possible shortcomings in performance and transport of creatine to the brain...
October 3, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28969739/hyperhomocysteinemia-presenting-with-complete-unilateral-intracranial-and-extracranial-carotid-occlusion-in-a-young-patient
#12
Farheen Niazi, Abdul Rahman, Uzma Batool
Hyperhomocysteinemia has been associated with premature peripheral vascular, cerebrovascular, and coronary artery disease. It has been associated with vascular diseases including cerebrovascular disease, particularly in subjects with significant carotid stenosis. However, hyperhomocysteinemia causing unilateral complete occlusion of whole of internal carotid, common carotid, and external carotid has been rarely reported. We report a case of an adult patient aged 35-year with complete occlusion of right common carotid, internal carotid, both intracranial and extracranial part, presented with recurrent TIAs and stroke and was found to be having hyperhomocysteinemia as the cause of this complete occlusion and showed marked clinical recovery with appropriate treatment...
September 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28963520/interplay-between-3-utr-polymorphisms-in-the-methylenetetrahydrofolate-reductase-mthfr-gene-and-the-risk-of-ischemic-stroke
#13
Jung Oh Kim, Han Sung Park, Chang Soo Ryu, Jung-Won Shin, Jinkwon Kim, Seung Hun Oh, Ok Joon Kim, Nam Keun Kim
Stroke incidence is a multifactorial disease and especially hyperhomocysteinemia is associated with a higher risk of stroke. Previous studies have reported a folate metabolism disorder associated with the MTHFR gene. We investigated four single nucleotide polymorphisms in the MTHFR 3'-UTR [2572 C > A (rs4846049), 4869 C > G (rs1537514), 5488 C > T (rs3737967), and 6685 T > C (rs4846048)] to elucidate associations between ischemic stroke prevalence and prognosis. We examined 511 consecutive patients with ischemic stroke...
September 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28963121/animal-models-of-cerebral-amyloid-angiopathy
#14
REVIEW
Lieke Jäkel, William E Van Nostrand, James A R Nicoll, David J Werring, Marcel M Verbeek
Cerebral amyloid angiopathy (CAA), due to vascular amyloid β (Aβ) deposition, is a risk factor for intracerebral haemorrhage and dementia. CAA can occur in sporadic or rare hereditary forms, and is almost invariably associated with Alzheimer's disease (AD). Experimental (animal) models are of great interest in studying mechanisms and potential treatments for CAA. Naturally occurring animal models of CAA exist, including cats, dogs and non-human primates, which can be used for longitudinal studies. However, due to ethical considerations and low throughput of these models, other animal models are more favourable for research...
October 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28962174/vascular-protective-effects-of-astragalus-membranaceus-and-its-main-constituents-in-rats-with-chronic-hyperhomocysteinemia
#15
Li-Hong Qiu, Bi-Qi Zhang, Miao-Jun Lian, Xian-Ji Xie, Peng Chen
Hyperhomocysteinemia (HHcy) is an important factor in cardiovascular disease. However, is currently no cure available in western medicine for HHcy-evoked cardiovascular disease. The present study explored the vascular protective effects of Astragalus membranaceus (AM), a traditional Chinese medicine. Rats with HHcy were induced by feeding high-methionine diets and treated with total extract of AM (TEA) and its constituents, including Astragalus saponins (ASP), Astragalus total flavonoids (ATF) and Astragalus polysaccharides (APS)...
September 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28956423/influence-of-glucose-metabolism-on-cognitive-function-of-patients-with-acute-small-artery-occlusion
#16
L P Zhai, X L Zhang, Q B Guan, B Yu, Y P Wang, H P Shen, X X Yu, D D Wang, Y Zhu
The aim of this study was to evaluate the influence of abnormal glucose metabolism on cognitive function of patients with acute small-arterial occlusion (SAO). The present study included 1,211 patients, with small-artery occlusion according to the Trial of Org 10172 in acute stroke treatment (TOAST) classification, admitted between March 2014 and December 2016 to The Second Hospital of Jiaxing. According to cognitive function, the patients were divided into a group of normal cognitive function, a mild cognitive impairment group (MCI group) and a dementia group...
July 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28943219/hyperhomocysteinemia-as-a-risk-factor-for-saccular-intracranial-aneurysm-a-cohort-study-in-a-chinese-han-population
#17
Jin-Rui Ren, Shao-Hua Ren, Bo Ning, Jun Wu, Yong Cao, Xin-Min Ding, Zi-Gang Zhen, Xu-Dong Hao, Shuo Wang
BACKGROUND: We evaluated the possible relationships between serum total homocysteine and folate and Vitamin B12 in patients with intracranial aneurysm. METHODS: We enrolled consecutive patients with intracranial aneurysm from the Han population who were admitted to the hospital, as well as control subjects who received medical examination on an outpatient basis. The serum total homocysteine, folate, and Vitamin B12 levels were measured in patients with intracranial aneurysm and the control group, and the associations between those factors were analyzed using multivariate logistic analysis...
September 21, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28936083/unilateral-papilledema-in-cerebral-venous-sinus-thrombosis
#18
Girish Baburao Kulkarni, Ravinder Jeet Singh, Veeranna Gadad, Subasree Ramakrishnan, Veerendrakumar Mustare
In the majority of patients with raised intracranial pressure, the papilledema is bilateral. Unilateral papilledema is rare in conditions causing intracranial hypertension, and it has been described in Foster-Kennedy syndrome and in some cases of idiopathic intracranial hypertension. It has never been reported in cerebral venous thrombosis. We report a young lady presenting with features of subacute onset of headache with seizures, on evaluation she had superior sagittal and bilateral lateral sinus thrombosis...
August 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28936075/headache-patterns-in-cerebral-venous-sinus-thrombosis
#19
Ragasudha Botta, Sheshagiri Donirpathi, Ravi Yadav, Girish B Kulkarni, M Veerendra Kumar, Dindigur Nagaraja
OBJECTIVES: The objective of this study was to assess the clinical characteristics, patterns, and factors associated with headache in patients with cerebral venous sinus thrombosis (CVT). METHODS: In this prospective cohort study, we recruited conscious CVT patients who were able to give reliable history after consent. Institutional ethics approval was obtained. The diagnosis of CVT was based on the clinical and imaging parameters. Data regarding headache characteristic, severity (visual analog scale [VAS]), imaging findings and outcome was recorded...
August 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28933423/omega-3-pufa-ameliorates-hyperhomocysteinemia-induced-hepatic-steatosis-in-mice-by-inhibiting-hepatic-ceramide-synthesis
#20
Yong-Qiang Dong, Xing-Zhong Zhang, Lu-Lu Sun, Song-Yang Zhang, Bo Liu, Hui-Ying Liu, Xian Wang, Chang-Tao Jiang
Hyperhomocysteinemia (HHcy) is a key risk factor in hepatic steatosis. In this study, we applied a metabolomic approach to investigate the changes in the metabolite profile due to HHcy-induced hepatic steatosis and the effects of omega-3 PUFA (polyunsaturated fatty acid) supplementation in mice. HHcy was induced in mice by giving DL-Hcy (1.8 g/L) in drinking water for 6 weeks, then the mice were sacrificed, and the metabolic profiles of the liver and plasma were analyzed through UPLC-ESI-QTOFMS-based lipidomics...
September 21, 2017: Acta Pharmacologica Sinica
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