Read by QxMD icon Read


Jihyun Kim, Hyunhee Kim, Heewon Roh, Youngjoo Kwon
In the last 10 years, homocysteine has been regarded as a marker of cardiovascular disease and a definite risk factor for many other diseases. Homocysteine is biosynthesized from methionine through multiple steps and then goes through one of two major metabolic pathways: remethylation and transsulfuration. Hyperhomocysteinemia is a state in which too much homocysteine is present in the body. The main cause of hyperhomocysteinemia is a dysfunction of enzymes and cofactors associated with the process of homocysteine biosynthesis...
March 19, 2018: Archives of Pharmacal Research
Yajing Huo, Xuqing Wu, Jing Ding, Yang Geng, Weiwei Qiao, Anyan Ge, Cen Guo, Jianing Lv, Haifeng Bao, Wei Fan
Hyperhomocysteinemia, a risk factor for vascular disease, is associated with metabolic syndrome. Our study was aimed at exploring the effect of long-term hyperhomocysteinemia with metabolic disturbances on vascular remodeling. We also studied oxidative stress and expression of PPAR γ in the coronary arteriole as a possible mechanism underlying vascular remodeling. Rats were treated with standard rodent chow (Control) or diet enriched in methionine (Met) for 48 weeks. Plasma homocysteine, blood glucose, serum lipids, malondialdehyde (MDA), superoxide dismutase (SOD), and nitric oxide (NO) levels were measured...
2018: PPAR Research
Z Checinska-Maciejewska, E Miller-Kasprzak, A Checinska, E Korek, M Gibas-Dorna, A Adamczak-Ratajczak, P Bogdanski, H Krauss
It has been proposed that regular cold swimming is associated with health benefits. However, the effect of cold adaptation on particular cardiovascular risk factors, within a single swimming season, remains unknown. Our aim was to evaluate the impact of cold water swimming on the seasonal changes in lipid profile and on apolipoprotein and homocysteine concentration in 34 cold water swimmers (CWS) aged 48 - 68 years. Blood samples were collected at the beginning (October), the middle (January), and the end (April) of the swimming season...
December 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
Hannah Maier, Saskia Helm, Sermin Toto, Nicole Moschny, Wolfgang Sperling, Thomas Hillemacher, Kai G Kahl, Ewgeni Jakubovski, Stefan Bleich, Helge Frieling, Alexandra Neyazi
Background: Electroconvulsive therapy (ECT) is one of the most effective treatment options for refractory depressed patients. To date, there are only a few predictors of response. Aim: The aim was to identify predictive biomarkers of remission to ECT on a molecular level. Methods: 11 patients suffering from a major depressive episode-according to the Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV)-underwent 10 ECT sessions...
2018: Disease Markers
Haiyan Wang, Linyi Li, Ling Ling Qin, Yanan Song, Josep Vidal-Alaball, Tong Hua Liu
BACKGROUND: Vitamin B12 deficiency is common, and the incidence increases with age. Most people with vitamin B12 deficiency are treated in primary care with intramuscular (IM) vitamin B12 . Doctors may not be prescribing oral vitamin B12 formulations because they may be unaware of this option or have concerns regarding its effectiveness. OBJECTIVES: To assess the effects of oral vitamin B12 versus intramuscular vitamin B12 for vitamin B12 deficiency. SEARCH METHODS: We searched CENTRAL, MEDLINE, Embase, and LILACS, as well as the WHO ICTRP and ClinicalTrials...
March 15, 2018: Cochrane Database of Systematic Reviews
Guner Cicek, Osman Imamoglu, Abdullah Gullu, Oguzhan Celik, Oguzhan Ozcan, Esin Gullu, Faruk Yamaner
The purpose of this study is to investigate the effect of 16 weeks step-aerobic exercises and core exercises on left ventricular structure and function with some physiological parameters in sedentary women. Methods: To achieve the purpose of this study, a total of 45 volunteers including (step-aerobic group (SAG, n = 25), core exercise group (CEG, n = 20) were selected as participants. Two different exercises were applied for 4 days a week, throughout 16 weeks, within 60 minutes for each exercise with the intensity of heart rate (HR) 60-70 percent...
December 2017: Journal of Exercise Science and Fitness
Wenlong Zhou, Yan Yang, Liang Tang, Kai Cheng, Changkun Li, Huimin Wang, Minzhi Liu, Wei Wang
Acrolein (Acr) was used as a selection agent to improve the glutathione (GSH) overproduction of the prototrophic strain W303-1b/FGPPT . After two rounds of adaptive laboratory evolution (ALE), an unexpected result was obtained wherein identical GSH production was observed in the selected isolates. Then, a threshold selection mechanism of Acr-stressed adaption was clarified based on the formation of an Acr-GSH adduct, and a diffusion coefficient (0.36 ± 0.02 μmol·min-1 ·OD600 -1 ) was calculated. Metabolomic analysis was carried out to reveal the molecular bases that triggered GSH overproduction...
March 14, 2018: Scientific Reports
Cheng-Jin You, Dan Liu, Li-Li Liu, Guo-Zhong Li
The present study was to examine the relationship between white matter lesions (WMLs) and insulin resistance (IR) in patients with acute stroke and evaluate clinical prognosis.Around 200 patients with initial onset of acute stroke including 146 patients (73.0%) with WMLs and 54 patients (27%) without WMLs were analyzed by neuropsychological scales. Fasting blood glucose (FBG), fasting insulin, blood lipid, homocysteine (Hcy), high-sensitivity C-reactive protein (hs-CRP), creatinine, and uric acid, diabetes mellitus (DM), prediabetes (PD), and normal glucose (NG) were determined according to HbA1c levels...
March 2018: Medicine (Baltimore)
Yuwen Shen, Chuanzhen Liu, Changcun Fang, Jie Xi, Shuming Wu, Xinyan Pang, Guangmin Song
OBJECTIVE: To study the risk factors of oxygenation impairment in patients with type-A acute aortic dissection who underwent total arch replacement with a stented elephant trunk. METHODS: In this study, 169 consecutive patients were enrolled who were diagnosed with type-A acute aortic dissection and underwent a total arch replacement procedure at the Qilu Hospital of Shandong University between January 2015 and February 2017. Postoperative oxygenation impairment was defined as arterial oxygen partial pressure/inspired oxygen fraction ≤ 200 with positive end expiratory pressure ≥ 5 cm H2 O that occurred within 72 hours of surgery...
February 14, 2018: Journal of Thoracic and Cardiovascular Surgery
Sae Bom Won, Young Hye Kwon
Offspring of female rats fed either a casein (CAS) diet or a low-isoflavone soy protein isolate (SPI) diet were compared in an animal model of chronic ethanol consumption to investigate whether maternal diet regulates the adaptive responses of offspring to postnatal ethanol exposure and potentially affects the development of liver disease in later life. Female rats were fed either a CAS or an SPI diet before mating, and during pregnancy and lactation. Male offspring from the same litter were pair-fed either a control or ethanol diet for six weeks (CAS/CON, CAS/EtOH, SPI/CON, and SPI/EtOH groups)...
March 10, 2018: Nutrients
Bozidarka L Zaric, Milan Obradovic, Vladan Bajic, Mohamed A Haidara, Milos Jovanovic, Esma R Isenovic
Homocysteine (Hcy) is thiol group containing the amino acid, which naturally occurs in all humans. Hcy is degraded in the body through two metabolic pathways, while a minor part is excreted through kidneys. The chemical reactions that are necessary for degradation of Hcy require the presence of the folic acid, vitamins B6 and B12. Consequently, the level of the total Hcy in the serum is influenced by the presence or absence of these vitamins. An elevated level of the Hcy, hyperhomocysteinemia (HHcy) and homocystinuria are connected with occlusive artery disease, especially in the brain, the heart, and the kidney, in addition to venous thrombosis, chronic renal failure, megaloblastic anemia, osteoporosis, depression, Alzheimer's disease, pregnancy problems, and others...
March 12, 2018: Current Medicinal Chemistry
Kilmer S McCully
The indoleamine hormone melatonin is synthesized by the pineal gland, controls circadian rhythm, and is dependent upon adenosyl methionine for enzymatic synthesis of melatonin from N-acetyl serotonin. Pineal melatonin secretion declines dramatically with aging and dementia. Elevated plasma homocysteine is a risk factor for atherosclerosis and Alzheimer's disease, and the marked decline in adenosyl methionine with aging leads to dysregulation of methionine metabolism and hyperhomocysteinemia. Thioretinaco ozonide is a disulfonium complex formed from thioretinamide, cobalamin, and ozone, which binds the alpha and gamma-phosphate groups of adenosine triphosphate (ATP) and oxygen in the process of oxidative phosphorylation within mitochondria...
January 2018: Annals of Clinical and Laboratory Science
Nuno Mendonça, Carol Jagger, Antoneta Granic, Carmen Martin-Ruiz, John C Mathers, Chris J Seal, Tom R Hill
Background: Folate and vitamin B12 are key to the correct functioning of one-carbon (1-C) metabolism. The current evidence on associations between 1-C metabolism biomarkers and mortality is inconclusive and generally based on younger or institutionalised populations. This study aimed to determine the associations between biomarkers of 1-C metabolism and all-cause and cardiovascular (CVD) mortality in the very old. Methods: The Newcastle 85+ Study is a prospective longitudinal study of participants aged 85 at recruitment living in Northeast England...
February 24, 2018: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
Pol Solé-Navais, Judith Salat-Batlle, Pere Cavallé-Busquets, Joan Fernandez-Ballart, Per M Ueland, Mónica Ballesteros, Gemma Ornosa-Martín, Montserrat Inglès-Puig, Jose M Colomina, Michelle M Murphy
Background: Periconception folic acid supplementation is widespread, but how it interacts with cobalamin status is rarely considered. Objective: The aim of this study was to investigate whether first-trimester folate-cobalamin interactions affect pregnancy cobalamin status, hematologic variables, and pregnancy outcomes. Design: In the longitudinal Reus-Tarragona Birth Cohort study from <12 gestational weeks throughout pregnancy, fasting plasma and red blood cell (RBC) folate, plasma cobalamin, holotranscobalamin (holoTC), methylmalonic acid (MMA), total homocysteine (tHcy), hemoglobin, mean cell volume (MCV), postglucose-load serum glucose, gestational hypertension, gestational age at birth, and birth weight were recorded in 563 participants...
February 1, 2018: American Journal of Clinical Nutrition
Luke Mugge, Tarek R Mansour, Brianna Krafcik, Travis Mazur, Tonya Floyd-Bradstock, Azedine Medhkour
Stroke is one of the leading causes of mortality and morbidity worldwide and requires rapid and intensive treatment to prevent adverse outcomes. Decompressive hemicraniectomy stands as the gold standard for surgical resolution of the intracranial swelling which accompanies cerebral infarction; however, the benefits of this procedure are not as well achieved in the elderly (age >65 yoa) compared to the younger population. This is a critical review performed on all available literature relating to middle cerebral artery (MCA) stroke in the elderly with emphasis on articles examining causality of adverse outcomes in this group over younger populations...
March 8, 2018: Journal of Neurosurgical Sciences
Tomas Majtan, Erez M Bublil, Insun Park, Erland Arning, Teodoro Bottiglieri, Frank Glavin, Jan P Kraus
AIMS: PEGylated human truncated cystathionine beta-synthase, lacking the C-terminal regulatory domain (PEG-CBS), is a promising preclinical candidate for enzyme replacement therapy in homocystinuria (HCU). It was designed to function as a metabolic sink to decrease the severely elevated plasma and tissue homocysteine concentrations. Here we evaluated pharmacokinetics (PK), pharmacodynamics (PD) and sub-chronic toxicity of PEG-CBS in homocystinuric mice and wild type rats and monkeys to estimate the minimum human efficacious dose for clinical trials...
March 8, 2018: Life Sciences
Fernanda Spadotto Baptista, Maria Rita de Figueiredo Lemos Bortolotto, Fabiola Roberta Marim Bianchini, Vera Lucia Jornada Krebs, Marcelo Zugaib, Rossana Pulcinelli Vieira Francisco
OBJECTIVE: To evaluate whether thrombophilia worsens maternal and foetal outcomes among patients with severe preeclampsia (PE). METHOD: From October 2009 to October 2014, an observational retrospective cohort study was performed on pregnant women with severe PE diagnosed before 34 weeks of gestation and their newborns hospitalized at the Clinics Hospital, FMUSP. Patients who had no heart disease, nephropathies, pre-gestational diabetes, gestational trophoblastic disease, foetal malformation, or twin pregnancy and who underwent thrombophilia screening during the postnatal period were included...
January 2018: Pregnancy Hypertension
Ya-Lan Wang, Quan-Fei Zhu, Li-Ming Cheng, Shao-Ting Wang, Shan-Shan Qin, Shu-Jian Zheng, Hua-Ming Xiao, Juan-Juan Li, Song-Mei Liu, Bi-Feng Yuan, Yu-Qi Feng
Low-molecular-weight thiols play important roles in a variety of pathological processes and are closely associated with a wide range of diseases. In this study, a selective and sensitive method was developed for the simultaneous determination of all the 7 thiols occurring in the transsulfuration pathway (Cysteine (Cys), homocysteine (Hcys), glutathione (GSH), N-acetylcysteine (Nac), cysteinylglycine (CysGly), glutamylcysteine (GluCys) and cysteamine (CA)) in human serum by in-vitro stable isotope labeling - dispersive solid phase extraction - liquid chromatography - tandem mass spectrometry analysis (IL-DSPE-LC-MS/MS)...
February 28, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Yanyan Zhang, Yuan Zhang, Jiayu Tang, Shuang Zhao, Chen Li, Yong-Pan Huang, Minhan Yi
BACKGROUND/AIMS: Genetic or nutritional deficiencies in homocysteine (Hcy)metabolism lead to the accumulation of Hcy and its metabolites in the blood. This can lead to hyperhomocysteinemia (HHcy), which is an independent risk factor for cardiovascular disease. Studies have shown that HHcy leads to endothelial dysfunction, a hallmark of atherosclerosis, which may explain this link. The precise mechanism remains unclear, but a strong possibility is excessive HHCy-induced autophagy. Autophagy has been better studied in ischemia/reperfusion (I/R) injuries, and previous work showed that Oxymatrine (OMT), a quinolizidine alkaloid, protects cells against myocardial I/R injury by inhibiting autophagy...
February 28, 2018: Cellular Physiology and Biochemistry
Satoshi Akamine, Yoshito Ishizaki, Yasunari Sakai, Hiroyuki Torisu, Ryoko Fukai, Noriko Miyake, Kazuhiro Ohkubo, Hiroshi Koga, Masafumi Sanefuji, Ayumi Sakata, Masahiko Kimura, Seiji Yamaguchi, Osamu Sakamoto, Toshiro Hara, Hirotomo Saitsu, Naomichi Matsumoto, Shouichi Ohga
Mutations in the X-linked gene CDKL5 cause early-onset epileptic encephalopathy and severe developmental delay. Because this disorder predominantly affects females, the full clinical spectrum of male patients remains elusive. We herein report a 16-year-old boy, who suffered from intractable seizures 20 days after birth. Serial electroencephalograms detected recurrent focal epileptiform discharges from age 4 months, which evolved to hypsarrhythmia later in infancy. Mass-spectrometric analyses revealed increase in urinary excretion of methylmalonic acid without perturbed concentrations of propionic acid, homocystein and methionine...
March 3, 2018: European Journal of Medical Genetics
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"