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https://www.readbyqxmd.com/read/28640642/epidemiological-characteristics-of-hyperhomocysteinemia-and-h-type-hypertension-in-the-elderly-in-beijing-china
#1
Lina Ma, Li Li, Zhe Tang
Hyperhomocysteinemia (HHcy) is an important risk factor for atherosclerosis-related diseases, and H-type hypertension (HHT) is becoming a major health-care concern in China. We assessed the prevalence of HHcy and HHT in the elderly in a retrospective study based on data obtained from the Beijing Longitudinal Study of Aging. This cross-sectional study comprised 1460 people in the general population (638 males and 822 females) aged ≥60 years dwelling in an urban district, a suburb, and an outer suburb of Beijing in 2012...
June 22, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28637244/elevated-homocysteine-increases-the-risk-of-left-atrial-left-atrial-appendage-thrombus-in-non-valvular-atrial-fibrillation-with-low-cha2ds2-vasc-score
#2
Yan Yao, Mei-Sheng Shang, Li-Jian Gao, Jing-Hua Zhao, Xiao-Hui Yang, Tong Liu, Ri-Bo Tang, Chen-Xi Jiang, De-Yong Long, Man Ning, Hui Zhu, Qiang Lv, Rong Hu, Xin Du, Jian-Zeng Dong
Aims: To assess the association and the predictive value of plasma homocysteine (Hcy) levels with LA/LAA thrombus in non-valvular Atrial fibrillation (AF) patients with low CHA2DS2-VASc score. Methods and results: Eight hundred and eighty-eight consecutive patients in non-valvular AF with CHA2DS2-VASc score of 0 and 1 were enrolled. All patients routinely underwent transthoracic echocardiography and transoesophageal echocardiography. A total of thirty-two patients had LA/LAA thrombus...
June 16, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28636071/the-role-of-homocysteine-in-seminal-vesicles-remodeling-in-rat
#3
Adel Ghoul, Elara Moudilou, Mohamed El Hadi Cherifi, Fouzia Zerrouk, Billel Chaouad, Anissa Moulahoum, Souhila Aouichat-Bouguerra, Khira Othmani, Jean-Marie Exbrayat, Yasmina Benazzoug
INTRODUCTION: Elevated plasma homocysteine (Hcy) levels have been associated with several tissue injuries including heart and liver fibrosis. In these diseases, hyperhomocysteinemia (Hhcy) plays a major role in modulating the alteration of the balance between matrix metalloproteinases (MMP) and tissue inhibitors of metalloproteinases (TIMPs), leading to the pathological accumulation of extracellular matrix (ECM) proteins. Since the effect of Hhcy on ECM of seminal vesicle was not studied, the aim of our research was to check if Hcy can induce a remodeling within seminal vesicles ECM...
June 21, 2017: Folia Histochemica et Cytobiologica
https://www.readbyqxmd.com/read/28633902/calcium-sensing-receptor-initiating-cystathionine-gamma-lyase-hydrogen-sulfide-pathway-to-inhibit-platelet-activation-in-hyperhomocysteinemia-rat
#4
Yuwen Wang, Ziqing Zhao, Sa Shi, Fei Gao, Jichao Wu, Shiyun Dong, Weihua Zhang, Yanhong Liu, Xin Zhong
Hyperhomocysteinemia (HHcy, high homocysteine) induces the injury of endothelial cells (ECs). Hydrogen sulfide (H2S) protects ECs and inhibits the activation of platelets. Calcium-sensing receptor (CaSR) regulates the production of endogenous H2S. However, whether CaSR inhibits the injury of ECs and the activation of platelets by regulating the endogenous cystathionine-gamma-lyase (CSE, a major enzyme that produces H2S)/H2S pathway in hyperhomocysteinemia has not been previously investigated. Here, we tested the ultrastructure alterations of ECs and platelets, the changes in the concentration of serum homocysteine and the parameters of blood of hyperhomocysteinemia rats were measured...
June 19, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28633641/expression-levels-of-atherosclerosis-associated-mir-143-and-mir-145-in-the-plasma-of-patients-with-hyperhomocysteinaemia
#5
Kejian Liu, Saiyare Xuekelati, Yue Zhang, Yin Yin, Yue Li, Rui Chai, Xinwei Li, Yi Peng, Jiangdong Wu, Xiaomei Guo
BACKGROUND: An elevated level of homocysteine (Hcy) in the blood is designated hyperhomocysteinaemia (Hhcy) and is regarded as a strong risk factor for the development of atherosclerosis (ATH), although the association remains controversial. Considered to be essential gene expression regulators, micro-RNAs (miRNAs) modulate cardiovascular disease development and thus can be regarded as potential biomarkers and therapeutic targets in atherosclerosis. The aim of the current study is to investigate the expression levels of atherosclerosis-associated miR-143 and miR-145 in Hhcy patients and predict the progress of atherosclerosis in Hhcy patients...
June 20, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28632203/combined-assessment-of-dyrk1a-bdnf-and-homocysteine-levels-as-diagnostic-marker-for-alzheimer-s-disease
#6
N Janel, P Alexopoulos, A Badel, F Lamari, A C Camproux, J Lagarde, S Simon, C Feraudet-Tarisse, P Lamourette, M Arbones, J L Paul, B Dubois, M C Potier, M Sarazin, J M Delabar
Early identification of Alzheimer's disease (AD) risk factors would aid development of interventions to delay the onset of dementia, but current biomarkers are invasive and/or costly to assess. Validated plasma biomarkers would circumvent these challenges. We previously identified the kinase DYRK1A in plasma. To validate DYRK1A as a biomarker for AD diagnosis, we assessed the levels of DYRK1A and the related markers brain-derived neurotrophic factor (BDNF) and homocysteine in two unrelated AD patient cohorts with age-matched controls...
June 20, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28631302/l-hcy-induced-cathepsin-v-mediates-the-vascular-endothelial-inflammation-in-hyperhomocysteinemia
#7
Yi-Ping Leng, Ye-Shuo Ma, Xiao-Gang Li, Rui-Fang Chen, Ping-Yu Zeng, Xiao-Hui Li, Cheng-Feng Qiu, Ya-Pei Li, Zhen Zhang, Alex F Chen
BACKGROUND AND PURPOSE: Vascular inflammation, including the expression of inflammatory cytokines in endothelial cells, plays a critical role in hyperhomocysteinemia-associated vascular diseases. Cathepsin V, specifically expressed in humans, is involved in vascular diseases through its elastolytic and collagenolytic activities. The aim of this study was to determine the effects of cathepsin V on the L-homocysteine (L-Hcy)-induced vascular inflammation. EXPERIMENTAL APPROACH: A high methionine diet-induced hyperhomocysteinemic mice model was used to assess the cathepsin V expression and vascular inflammation...
June 20, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28630659/homocysteine-induces-apoptosis-of-human-umbilical-vein-endothelial-cells-via-mitochondrial-dysfunction-and-endoplasmic-reticulum-stress
#8
Zhimin Zhang, Congying Wei, Yanfen Zhou, Tao Yan, Zhengqiang Wang, Wei Li, Lianyou Zhao
Homocysteine- (Hcy-) induced endothelial cell apoptosis has been suggested as a cause of Hcy-dependent vascular injury, while the proposed molecular pathways underlying this process are unclear. In this study, we investigated the adverse effects of Hcy on human umbilical vein endothelial cells (HUVEC) and the underlying mechanisms. Our results demonstrated that moderate-dose Hcy treatment induced HUVEC apoptosis in a time-dependent manner. Furthermore, prolonged Hcy treatment increased the expression of NOX4 and the production of intracellular ROS but decreased the ratio of Bcl-2/Bax and mitochondrial membrane potential (MMP), resulting in the leakage of cytochrome c and activation of caspase-3...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28630000/betaine-aldehyde-dehydrogenase-expression-during-physiological-cardiac-hypertrophy-induced-by-pregnancy
#9
Jesús Alfredo Rosas-Rodríguez, José Guadalupe Soñanez-Organis, José Arquimides Godoy-Lugo, Juan Alberto Espinoza-Salazar, Cesar Jeravy López-Jacobo, Norma Aurora Stephens-Camacho, Guadalupe González-Ochoa
Betaine Aldehyde Dehydrogenase (betaine aldehyde: NAD(P)(+) oxidoreductase, (E.C. 1.2.1.8; BADH) catalyze the irreversible oxidation of betaine aldehyde (BA) to glycine betaine (GB) and is essential for polyamine catabolism, γ-aminobutyric acid synthesis, and carnitine biosynthesis. GB is an important osmolyte that regulates the homocysteine levels, contributing to a vascular risk factor reduction. In this sense, distinct investigations describe the physiological roles of GB, but there is a lack of information about the GB novo synthesis process and regulation during cardiac hypertrophy induced by pregnancy...
June 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28629859/s-adenosyl-l-homocysteine-hydrolase-from-a-hyperthermophile-thermotoga-maritima-is-expressed-in-escherichia-coli-in-inactive-form-biochemical-and-structural-studies
#10
Krzysztof Brzezinski, Justyna Czyrko, Joanna Sliwiak, Edyta Nalewajko-Sieliwoniuk, Mariusz Jaskolski, Boguslaw Nocek, Zbigniew Dauter
Thermotoga maritima is a hyperthermophilic bacterium but its genome encodes a number of archaeal proteins including S-adenosyl-L-homocysteine hydrolase (SAHase), which regulates cellular methylation reactions. The question of proper folding and activity of proteins of extremophilic origin is an intriguing problem. When expressed in E.coli and purified (as a homotetramer) at room temperature, the hyperthermophilic SAHase from T.maritima was inactive. ITC study indicated that the protein undergoes heat-induced conformational changes, and enzymatic activity assays demonstrated that these changes are required to attain enzymatic activity...
June 16, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28628270/serum-klotho-vitamin-d-and-homocysteine-in-combination-predict-the-outcomes-of-chinese-patients-with-multiple-system-atrophy
#11
Yue Guo, Xiao-Dong Zhuang, Wen-Biao Xian, Ling-Ling Wu, Ze-Na Huang, Xun Hu, Xiang-Song Zhang, Ling Chen, Xin-Xue Liao
AIMS: Neuroinflammation contributed to the pathogenesis of multiple system atrophy (MSA). We aimed to detect the correlation between inflammatory mediators, such as Klotho (Klt), vitamin D (25(OH)D) and homocysteine (Hcy), and disease severity among MSA patients. METHODS: A total of 53 MSA patients, 65 PD patients, and 62 normal subjects were recruited in our cross-sectional study. Serum Klotho (Klt), vitamin D (25(OH)D), and homocysteine (Hcy) levels were measured...
June 19, 2017: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/28627444/associative-role-of-tyms6bpdel-polymorphism-and-resulting-hyperhomocysteinemia-in-the-pathogenesis-of-preterm-delivery-and-associated-complications-a-study-from-northeast-india
#12
Diptika Tiwari, Chandana Ray Das, Purabi Deka Bose, Sujoy Bose
Aberrations including genetic alterations in folate pathway are detrimental in multiple disease pathogenesis, including pregnancy. The present study is based on the screening of the associative role of TYMS 14946bp deletion(del) polymorphism and associated hyperhomocysteinemia in susceptibility to preterm delivery (PTD), which is strongly associated with neonatal mortality and morbidity. METHODS: A total of 209 PTD cases {extremely preterm (n=22), very preterm (n=43) and moderately preterm (n=144)} and 194 term delivery cases were evaluated for TYMS 14946bp deletion and its association with preterm delivery, pregnancy outcome, baby birth weight and homocysteine estimation...
June 13, 2017: Gene
https://www.readbyqxmd.com/read/28625611/comparing-sf-36%C3%A2-scores-versus-biomarkers-to-predict-mortality-in-primary-cardiac-prevention-patients
#13
EDITORIAL
Rony Lahoud, Vasutakarn Chongthammakun, Yuping Wu, Nael Hawwa, Danielle M Brennan, Leslie Cho
BACKGROUND: Risk stratification plays an important role in evaluating patients with no known cardiovascular disease (CVD). Few studies have investigated health-related quality of life questionnaires such as the Medical Outcomes Study Short Form-36 (SF-36®) as predictive tools for mortality, particularly in direct comparison with biomarkers. Our objective is to measure the relative effectiveness of SF-36® scores in predicting mortality when compared to traditional and novel biomarkers in a primary prevention population...
June 15, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28625206/organic-food-consumption-during-pregnancy-and-its-association-with-health-related-characteristics-the-koala-birth-cohort-study
#14
Ana Paula Simões-Wüst, Carolina Moltó-Puigmartí, Eugene Hjm Jansen, Martien Cjm van Dongen, Pieter C Dagnelie, Carel Thijs
OBJECTIVE: To investigate the associations of organic food consumption with maternal pre-pregnancy BMI, hypertension and diabetes in pregnancy, and several blood biomarkers of pregnant women. DESIGN: Prospective cohort study. SETTING: Pregnant women were recruited at midwives' practices and through channels related to consumption of food from organic origin. SUBJECTS: Pregnant women who filled in FFQ and donated a blood sample (n 1339)...
June 19, 2017: Public Health Nutrition
https://www.readbyqxmd.com/read/28623948/one-carbon-metabolism-cognitive-impairment-and-csf-measures-of-alzheimer-pathology-homocysteine-and-beyond
#15
Loïc Dayon, Seu Ping Guiraud, John Corthésy, Laeticia Da Silva, Eugenia Migliavacca, Domilė Tautvydaitė, Aikaterini Oikonomidi, Barbara Moullet, Hugues Henry, Sylviane Métairon, Julien Marquis, Patrick Descombes, Sebastiano Collino, François-Pierre J Martin, Ivan Montoliu, Martin Kussmann, Jérôme Wojcik, Gene L Bowman, Julius Popp
BACKGROUND: Hyperhomocysteinemia is a risk factor for cognitive decline and dementia, including Alzheimer disease (AD). Homocysteine (Hcy) is a sulfur-containing amino acid and metabolite of the methionine pathway. The interrelated methionine, purine, and thymidylate cycles constitute the one-carbon metabolism that plays a critical role in the synthesis of DNA, neurotransmitters, phospholipids, and myelin. In this study, we tested the hypothesis that one-carbon metabolites beyond Hcy are relevant to cognitive function and cerebrospinal fluid (CSF) measures of AD pathology in older adults...
June 17, 2017: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/28623294/h2s-and-homocysteine-control-a-novel-feedback-regulation-of-cystathionine-beta-synthase-and-cystathionine-gamma-lyase-in-cardiomyocytes
#16
Shyam Sundar Nandi, Paras Kumar Mishra
Hydrogen sulfide (H2S), a cardioprotective gas, is endogenously produced from homocysteine by cystathionine beta synthase (CBS) and cystathionine gamma lyase (CSE) enzymes. However, effect of H2S or homocysteine on CBS and CSE expression, and cross-talk between CBS and CSE are unclear. We hypothesize that homocysteine and H2S regulate CBS and CSE expressions in a dose dependent manner in cardiomyocytes, and CBS deficiency induces cardiac CSE expression. To test the hypothesis, we treated murine atrial HL1 cardiomyocytes with increasing doses of homocysteine or Na2S/GYY4137, a H2S donor, and measured the levels of CBS and CSE...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28620818/effects-of-atorvastatin-and-simvastatin-on-oxidative-stress-in-diet-induced-hyperhomocysteinemia-in-wistar-albino-rats-a-comparative-study
#17
T Nikolic, V Zivkovic, I Srejovic, I Stojic, N Jeremic, J Jeremic, K Radonjic, S Stankovic, R Obrenovic, D Djuric, V Jakovljevic
Considering the well-known antioxidant properties of statins, it seems important to assess their impact on major markers of oxidative stress (superoxide anion radical, nitric oxide, and index of lipid peroxidation) to compare the antioxidative potentials of atorvastatin and simvastatin during the different degrees of hyperhomocysteinemia (HHcy) in rats. This study was conducted on adult male Wistar albino rats (n = 90; 4 weeks old; 100 ± 15 g body mass) in which HHcy was achieved by dietary manipulation...
June 15, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28620491/pseudo-thrombotic-thrombocytopenic-purpura-presenting-as-multi-organ-dysfunction-syndrome-a-rare-complication-of-pernicious-anemia
#18
Saroj Kandel, Nibash Budhathoki, Shanta Pandey, Bikash Bhattarai, Aam Baqui, Ramesh Pandey, Divya Salhan, Danilo Enriquez, Joseph Quist, Frances M Schmidt
OBJECTIVE: We present a rare case of pernicious anemia presented as multi-organ dysfunction syndrome, later found to have pseudo-thrombotic thrombocytopenic purpura. METHODS: An 86-year-old female presented with respiratory distress, altered mental status, acute renal failure and was intubated in emergency room. She was found to have severe anemia, thrombocytopenia, high lactate, high lactate dehydrogenase and low haptoglobin. Peripheral smear revealed multilobulated neutrophils with schistocytes, poikilocytes and anisocytes...
2017: SAGE open medical case reports
https://www.readbyqxmd.com/read/28618975/a-black-cohosh-extract-causes-hematologic-and-biochemical-changes-consistent-with-a-functional-cobalamin-deficiency-in-female-b6c3f1-n-mice
#19
Michelle C Cora, William Gwinn, Ralph Wilson, Debra King, Suramya Waidyanatha, Grace E Kissling, Sukhdev S Brar, Dorian Olivera, Chad Blystone, Greg Travlos
Black cohosh rhizome, available as a dietary supplement, is most commonly marketed as a remedy for dysmenorrhea and menopausal symptoms. A previous subchronic toxicity study of black cohosh dried ethanolic extract (BCE) in female mice revealed a dose-dependent ineffective erythropoiesis with a macrocytosis consistent with the condition known as megaloblastic anemia. The purpose of this study was to investigate potential mechanisms by which BCE induces these particular hematological changes. B6C3F1/N female mice (32/group) were exposed by gavage to vehicle or 1,000 mg/kg BCE for 92 days...
January 1, 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/28617530/effects-of-folic-acid-combined-with-vitamin-b12-on-dvt-in-patients-with-homocysteine-cerebral-infarction
#20
X-J Shu, Z-F Li, Y-W Chang, S-Y Liu, W-H Wang
OBJECTIVE: To investigate the effects of folic acid combined with vitamin B12 on deep vein thrombosis (DVT) in patients with homocysteine cerebral infarction. PATIENTS AND METHODS: 90 patients with homocysteine cerebral infarction with DVT that were admitted to our hospital from January to July 2015 were selected as study subjects. They were divided into 2 groups randomly, the treatment group (n=45) and the non-treatment group (n=45). The treatment group was administered folic acid and vitamin B12, while the non-treatment group wasn't administered folic acid and vitamin B12...
May 2017: European Review for Medical and Pharmacological Sciences
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