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https://www.readbyqxmd.com/read/28231073/gene-expression-profiles-suggest-iron-transport-pathway-in-the-lactating-human-epithelial-cell
#1
Chenxi Cai, Peter Eck, James K Friel
OBJECTIVES: The molecular background of iron excretion into breast milk has not been determined in humans. We determined the expression of known iron transporters in mRNA extracted from human milk fat globules to deduce which known transporters are responsible for iron excretion into human milk. METHODS: The expression of iron transporters in mRNA from human milk fat globules and mouse mammary epithelial cell lines was determined by quantitative real-time polymerase chain reaction...
March 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28230778/caffeic-acid-expands-anti-tumor-effect-of-metformin-in-human-metastatic-cervical-carcinoma-htb-34-cells-implications-of-ampk-activation-and-impairment-of-fatty-acids-de-novo-biosynthesis
#2
Malgorzata Tyszka-Czochara, Pawel Konieczny, Marcin Majka
The efficacy of cancer treatments is often limited and associated with substantial toxicity. Appropriate combination of drug targeting specific mechanisms may regulate metabolism of tumor cells to reduce cancer cell growth and to improve survival. Therefore, we investigated the effects of anti-diabetic drug Metformin (Met) and a natural compound caffeic acid (trans-3,4-dihydroxycinnamic acid, CA) alone and in combination to treat an aggressive metastatic human cervical HTB-34 (ATCC CRL-1550) cancer cell line...
February 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28228717/mild-hypothermia-attenuates-the-anesthetic-isoflurane-induced-cytotoxicity
#3
Cheng Li, Yuanlin Dong, Dan Chen, Zhongcong Xie, Yiying Zhang
The commonly used inhalation anesthetic isoflurane has been reported to induce DNA damage and cytotoxicity. However, the methods to attenuate these effects remain largely to be determined. Mild hypothermia has neuroprotective effects. We therefore set out to assess whether mild hypothermia could protect the isoflurane-induced DNA damage and cytotoxicity. Moreover, we investigated the underlying mechanisms by assessing the effects of mild hypothermia on the isoflurane-induced changes in ATP levels. H4 human neuroglioma cells were treated with 2% isoflurane for 3 or 6 h with and without mild hypothermia (35°C)...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28225569/hepatic-alanine-differentiates-nonalcoholic-steatohepatitis-from-simple-steatosis-in-humans-and-mice-a-proton-mr-spectroscopy-study-with-long-echo-time
#4
Tae-Hoon Kim, Hong Young Jun, Ki-Jong Kim, Young Hwan Lee, Myeung Su Lee, Keum Ha Choi, Ki Jung Yun, Yong Yeon Jeong, Chung Hwan Jun, Eun Young Cho, Kwon-Ha Yoon
PURPOSE: To evaluate the hepatic metabolic alterations in nonalcoholic fatty liver disease (NAFLD) by using (1) H-MRS (proton magnetic resonance spectroscopy) with long echo time and to test the reproducibility of human study in an animal model. Liver biopsy is the gold standard for diagnosing NAFLD but with practical constraints. (1) H-MRS allows in vivo assessment of hepatocellular metabolism and has shown potential for biochemical differentiation in diffuse liver disease. MATERIALS AND METHODS: In all, 32 subjects (11 patients with nonalcoholic steatohepatitis [NASH], 15 with simple steatosis [SS], and six healthy controls) were studied...
February 22, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28222656/detection-of-%C3%AE-lactoglobulin-in-human-breast-milk-7-days-after-cow-milk-ingestion
#5
Ponpan Matangkasombut, Savitree Padungpak, Sasikanya Thaloengsok, Wasu Kamchaisatian, Cherapat Sasisakulporn, Wanlapa Jotikasthira, Suwat Benjaponpitak, Wiparat Manuyakorn
BACKGROUND: β-lactoglobulin (BLG), a major allergen in cow milk (CM) can be detected in human breast-milk (BM) and is associated with exacerbation of symptoms in breastfed infants with cow milk protein allergy (CMPA). Currently, it is not known how long lactating mothers who consume dairy products need to withhold breastfeeding. OBJECTIVE: To elucidate the kinetics of BLG in BM after maternal ingestion of a single dose of CM. METHODS: Nineteen lactating mothers, four of whom had infants with CMPA, were instructed to avoid CM for 7 days before ingesting a single dose of CM and to continue to withhold CM thereafter throughout the study period...
February 22, 2017: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/28222424/1%C3%AE-25-oh-2d3-sensitive-cytosolic-ph-regulation-and-glycolytic-flux-in-human-endometrial-ishikawa-cells
#6
Ni Zeng, Yuetao Zhou, Shaqiu Zhang, Yogesh Singh, Bing Shi, Madhuri S Salker, Florian Lang
BACKGROUND/AIMS: Tumor cell proliferation is modified by 1,25-Dihydroxy-Vitamin D3 (1,25(OH)2D3), a steroid hormone predominantly known for its role in calcium and phosphorus metabolism. Key properties of tumor cells include enhanced glycolytic flux with excessive consumption of glucose and formation of lactate. As glycolysis is highly sensitive to cytosolic pH, maintenance of glycolysis requires export of H+ ions and lactate, which is in part accomplished by Na+/H+ exchangers, such as NHE1 and monocarboxylate transporters, such as MCT4...
February 8, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28222150/polymorphisms-and-features-of-cytomegalovirus-ul144-and-ul146-in-congenitally-infected-neonates-with-hepatic-involvement
#7
Gangqiang Guo, Liang Zhang, Sisi Ye, Yingying Hu, Baoqing Li, Xiangwei Sun, Chenchen Mao, Jianfeng Xu, Yiping Chen, Lifang Zhang, Xiangyang Xue
Human cytomegalovirus is a significant agent of hepatic involvement in neonates. In this study, we investigated the polymorphisms and features of the viral genes UL144 and UL146 as well as their significance to congenital hepatic involvement. In 79 neonates with congenital cytomegalovirus infection and hepatic involvement, full length UL144 and UL146 were successfully amplified in 73.42% and 60.76% of cases, respectively. Sequencing indicated that both genes were hypervariable. Notably, UL144 genotype B was highly associated with aspartate aminotransferase (P = 0...
2017: PloS One
https://www.readbyqxmd.com/read/28222147/the-desert-gerbil-psammomys-obesus-as-a-model-for-metformin-sensitive-nutritional-type-2-diabetes-to-protect-hepatocellular-metabolic-damage-impact-of-mitochondrial-redox-state
#8
Inès Gouaref, Dominique Detaille, Nicolas Wiernsperger, Naim Akhtar Khan, Xavier Leverve, Elhadj-Ahmed Koceir
INTRODUCTION: While metformin (MET) is the most widely prescribed antidiabetic drug worldwide, its beneficial effects in Psammomys obesus (P. obesus), a rodent model that mimics most of the metabolic features of human diabetes, have not been explored thoroughly. Here, we sought to investigate whether MET might improve insulin sensitivity, glucose homeostasis, lipid profile as well as cellular redox and energy balance in P. obesus maintained on a high energy diet (HED). MATERIALS AND METHODS: P...
2017: PloS One
https://www.readbyqxmd.com/read/28220059/disturbance-in-maternal-environment-leads-to-abnormal-synaptic-instability-during-neuronal-circuitry-development
#9
REVIEW
Yusuke Hatanaka, Tomohiro Kabuta, Keiji Wada
Adverse maternal environment during gestation and lactation can have negative effects on the developing brain that persist into adulthood and result in behavioral impairment. Recent studies of human and animal models suggest epidemiological and experimental association between disturbances in maternal environments during brain development and the occurrence of neuropsychiatric disorders, including autism spectrum disorder, attention deficit hyperactivity disorder, schizophrenia, anxiety, depression, and neurodegenerative diseases...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28219701/amelioratory-effect-of-coenzyme-q10-on-potential-human-carcinogen-microcystin-lr-induced-toxicity-in-mice
#10
Yaqoob Lone, Mangla Bhide, Raj Kumar Koiri
Microcystins are a group of cyclic heptapeptide toxins produced by cyanobacteria. More than 100 microcystin analogues have been detected, among which microcystin-LR is the most abundant and toxic variant. Present study was designed to reveal whether potential human carcinogen microcystin-LR could imbalance the glycolytic-oxidative-nitrosative status of heart, kidney and spleen of mice and also to explore the amelioratory effect of coenzyme Q10 on microcystin-LR induced toxicity. Microcystin-LR was administered at a dose of 10 μg/kg bw/day, ip for 14 days in male mice...
February 17, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28218905/phosphorylation-mediated-activation-of-ldha-promotes-cancer-cell-invasion-and-tumour-metastasis
#11
L Jin, J Chun, C Pan, G N Alesi, D Li, K R Magliocca, Y Kang, Z G Chen, D M Shin, F R Khuri, J Fan, S Kang
Metastases remain the major cause of death from cancer. Recent molecular advances have highlighted the importance of metabolic alterations in cancer cells, including the Warburg effect that describes an increased glycolysis in cancer cells. However, how this altered metabolism contributes to tumour metastasis remains elusive. Here, we report that phosphorylation-induced activation of lactate dehydrogenase A (LDHA), an enzyme that catalyses the interconversion of pyruvate and lactate, promotes cancer cell invasion, anoikis resistance and tumour metastasis...
February 20, 2017: Oncogene
https://www.readbyqxmd.com/read/28217829/vitamin-d-and-autism-what-s-new
#12
REVIEW
John Jacob Cannell
An increasing amount of evidence points to the possibility that gestational and early childhood vitamin D deficiency [25(OH)D < 40 ng/ml] cause some cases of autism. Vitamin D is metabolized into a seco-steroid hormone that regulates about 3% of the 26,000 genes in the coding human genome. It is also a neurosteroid that is active in brain development, having effects on cellular proliferation, differentiation, calcium signaling, neurotrophic and neuroprotective actions; it also appears to have an effect on neurotransmission and synaptic plasticity...
February 20, 2017: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/28208702/the-glutamate-dehydrogenase-pathway-and-its-roles-in-cell-and-tissue-biology-in-health-and-disease
#13
REVIEW
Andreas Plaitakis, Ester Kalef-Ezra, Dimitra Kotzamani, Ioannis Zaganas, Cleanthe Spanaki
Glutamate dehydrogenase (GDH) is a hexameric enzyme that catalyzes the reversible conversion of glutamate to α-ketoglutarate and ammonia while reducing NAD(P)⁺ to NAD(P)H. It is found in all living organisms serving both catabolic and anabolic reactions. In mammalian tissues, oxidative deamination of glutamate via GDH generates α-ketoglutarate, which is metabolized by the Krebs cycle, leading to the synthesis of ATP. In addition, the GDH pathway is linked to diverse cellular processes, including ammonia metabolism, acid-base equilibrium, redox homeostasis (via formation of fumarate), lipid biosynthesis (via oxidative generation of citrate), and lactate production...
February 8, 2017: Biology
https://www.readbyqxmd.com/read/28207907/argon-does-not-affect-cerebral-circulation-or-metabolism-in-male-humans
#14
Frank Grüne, Stephan Kazmaier, Sanne Elisabeth Hoeks, Robert Jan Stolker, Marc Coburn, Andreas Weyland
OBJECTIVE: Accumulating data have recently underlined argon´s neuroprotective potential. However, to the best of our knowledge, no data are available on the cerebrovascular effects of argon (Ar) in humans. We hypothesized that argon inhalation does not affect mean blood flow velocity of the middle cerebral artery (Vmca), cerebral flow index (FI), zero flow pressure (ZFP), effective cerebral perfusion pressure (CPPe), resistance area product (RAP) and the arterio-jugular venous content differences of oxygen (AJVDO2), glucose (AJVDG), and lactate (AJVDL) in anesthetized patients...
2017: PloS One
https://www.readbyqxmd.com/read/28205314/comparison-of-lc-ms-ms-vs-chemiluminescent-microparticle-immunoassay-in-measuring-the-valproic-acid-concentration-in-plasma-of-epilepsy-patients-in-a-new-perspective
#15
Zhipeng Wang, Yunlei Yun, Xinfang Xie, Chunhua You, Haijun Miao, Feng Zhang, Shouhong Gao, Wansheng Chen
OBJECTIVES: This study was designed to compare the performance of LC-MS/MS with chemiluminescent microparticle immunoassay (CMIA) for determination of VPA in epilepsy patients in the perspective of metabolites' hepatotoxicity. METHOD: Samples were collected and then analyzed using both LC-MS/MS and CMIA. A LO2 cells (normal human hepatic cells) experiment was carried out to confirm VPA metabolites' hepatotoxicity using AST(Aspertate Aminotransferase, AST), ALT(Alanine aminotransferase, ALT) and LDH(lactate dehydrogenase, LDH) in supernate as index...
February 15, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28202638/vitamin-concentrations-in-human-milk-vary-with-time-within-feed-circadian-rhythm-and-single-dose-supplementation
#16
Daniela Hampel, Setareh Shahab-Ferdows, M Munirul Islam, Janet M Peerson, Lindsay H Allen
Background: Human milk is the subject of many studies, but procedures for representative sample collection have not been established. Our improved methods for milk micronutrient analysis now enable systematic study of factors that affect its concentrations.Objective: We evaluated the effects of sample collection protocols, variations in circadian rhythms, subject variability, and acute maternal micronutrient supplementation on milk vitamin concentrations.Methods: In the BMQ (Breast-Milk-Quality) study, we recruited 18 healthy women (aged 18-26 y) in Dhaka, Bangladesh, at 2-4 mo of lactation for a 3-d supplementation study...
February 15, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28199786/alpha-adrenergic-receptor-blockade-increases-capillarisation-and-fractional-o2-extraction-and-lowers-blood-flow-in-contracting-human-skeletal-muscle
#17
Stefan P Mortensen, Stuart Egginton, Mads Madsen, Jonas B Hansen, Gregers D W Munch, Ulrik Winning Iepsen, Thorbjörn Åkerström, Bente K Pedersen, Ylva Hellsten
AIM: To investigate the effect of elevated basal shear stress on angiogenesis in humans, and the role of enhanced skeletal muscle capillarisation on blood flow and O2 extraction. METHODS: Limb haemodynamics and O2 extraction was measured at rest and during one-leg knee-extensor exercise (12 and 24W) in 10 healthy untrained young men before and after 4 weeks treatment with an α1 receptor-antagonist (Terazosin, 1-2 mg day(-1) ). Corresponding biopsies were taken from the m...
February 15, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28196854/hypothalamic-transcriptomic-alterations-in-male-and-female-california-mice-peromyscus-californicus-developmentally-exposed-to-bisphenol-a-or-ethinyl-estradiol
#18
Sarah A Johnson, William G Spollen, Lindsey K Manshack, Nathan J Bivens, Scott A Givan, Cheryl S Rosenfeld
Bisphenol A (BPA) is an endocrine-disrupting chemical (EDC) prevalent in many household items. Rodent models and human epidemiological studies have linked this chemical to neurobehavior impairments. In California mice, developmental exposure to BPA results in sociosexual disorders at adulthood, including communication and biparental care deficits, behaviors that are primarily regulated by the hypothalamus. Thus, we sought to examine the transcriptomic profile in this brain region of juvenile male and female California mice offspring exposed from periconception through lactation to BPA or ethinyl estradiol (EE, estrogen present in birth control pills and considered a positive estrogen control for BPA studies)...
February 2017: Physiological Reports
https://www.readbyqxmd.com/read/28196298/human-to-human-transmission-of-brucella-a-systematic-review
#19
REVIEW
Felipe F Tuon, Regina B Gondolfo, Natacha Cerchiari
OBJECTIVE: The most common form of transmitting human brucellosis is through contaminated food or direct contact with infected animals. Human-to-human transmission (HHT) has been described as isolated case reports. The aim of this systematic review was to describe all cases of HHT of human brucellosis reported in the medical literature. METHODS: A literature search was conducted using PubMed, Scopus and Scielo databases using specific search terms published until March 2016...
February 14, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28194842/infectivity-inhibition-by-overlapping-synthetic-peptides-derived-from-the-gh-gl-heterodimer-of-herpes-simplex-virus-type-1
#20
Gianluigi Franci, Annarita Falanga, Carla Zannella, Veronica Folliero, Francesca Martora, Marilena Galdiero, Stefania Galdiero, Giancarlo Morelli, Massimiliano Galdiero
Herpes simplex virus (HSV) is a human pathogen that infects epithelial cells. The cutaneous lesions, caused by the virus, spread to the nervous system creating several complications. Fusion of host membranes with the viral envelope is mandatory and mediated by a group of glycoproteins conserved in all Herpesviridae subfamilies, such as the glycoproteins B (gB), H (gH), L (gL) and D (gD). We investigated the inhibitory activity mediated by synthetic overlapping peptides spanning the entire ectodomains of gH and gL glycoproteins...
February 14, 2017: Journal of Peptide Science: An Official Publication of the European Peptide Society
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