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https://www.readbyqxmd.com/read/29452138/exposure-to-low-level-of-lead-during-preweaning-period-increases-metallothionein-3-expression-and-dysregulates-divalent-cation-levels-in-the-brain-of-young-rats
#1
Abdur Rahman, Khalid M Khan, Muddanna S Rao
Lead (Pb) is a neurotoxic heavy metal, but the mechanism of its neurotoxicity is not clearly understood. Expression of metallothioneins (MTs) is induced in response to heavy metal exposure as a protective mechanism against heavy metal toxicity. There are several isoforms of MTs (MT-1 to 4), of which MT-3 is the neuron specific isoform, which also has neurite growth inhibitory effects. Whereas, the induction of MT-1 and 2 in response to Pb has been reported, the effect of Pb on the expression of MT-3 in the brain has not been documented...
February 13, 2018: Neurotoxicology
https://www.readbyqxmd.com/read/29431427/chromis-1-a-ratiometric-fluorescent-probe-optimized-for-two-photon-microscopy-reveals-dynamic-changes-in-labile-zn-ii-in-differentiating-oligodendrocytes
#2
Daisy Bourassa, Christopher M Elitt, Adam M McCallum, S Sumalekshmy, Reagan L McRae, M Thomas Morgan, Nisan Siegel, Joseph W Perry, Paul A Rosenberg, Christoph J Fahrni
Despite the significant advantages of two-photon excitation microscopy (TPEM) over traditional confocal fluorescence microscopy in live-cell imaging applications, including reduced phototoxicity and photobleaching, increased depth penetration, and minimized autofluorescence, only a few metal ion-selective fluorescent probes have been designed and optimized specifically for this technique. Building upon a donor-acceptor fluorophore architecture, we developed a membrane-permeant, Zn(II)-selective fluorescent probe, chromis-1, that exhibits a balanced two-photon cross section between its free and Zn(II)-bound form and responds with a large spectral shift suitable for emission-ratiometric imaging...
February 12, 2018: ACS Sensors
https://www.readbyqxmd.com/read/29424324/nano-medicine-as-a-newly-emerging-approach-to-combat-human-immunodeficiency-virus-hiv
#3
Muthupandian Saravanan, Tsehaye Asmalash, Atsebaha Gebrekidan, Dawit Gebreegziabiher, Tadele Araya, Haftamu Hilekiros, Hamed Barabadi, Kumaresan Ramanathan
BACKGROUND: Human Immuno deficiency Virus (HIV) infection has attained pandemic level due to its complexity on both the HIV infection cycle and on the targets for drug delivery. This limits medication and consequently requires prominent and promising drug delivery systems to be invented. Notably, various nanomaterial have been studied to enhance effective delivery of the antiretroviral drugs for HIV prevention, diagnosis and cure. Some of these nanomaterials are liposomes, dendrimers, inorganic nanoparticles (NPs), polymeric micelles, natural and synthetic polymers...
February 8, 2018: Pharmaceutical Nanotechnology
https://www.readbyqxmd.com/read/29421993/zinc-supplementation-does-not-influence-serum-levels-of-vegf-bdnf-and-ngf-in-diabetic-retinopathy-patients-a-randomized-controlled-clinical-trial
#4
Sorayya Kheirouri, Siamak Naghizadeh, Mohammad Alizadeh
OBJECTIVES: This study was aimed to evaluate the effects of zinc (Zn) supplementation on serum levels of vascular endothelial growth factor (VEGF), brain-derived neurotrophic factor (BDNF), and nerve growth factor (NGF) in patients with diabetic retinopathy (DR). METHODS: In this randomized clinical trial, 50 patients with DR were allocated into the Zn (n = 25) and placebo (n = 25) groups to receive 30 mg Zn gluconate or maltose dextrin per day, respectively, for three months...
February 8, 2018: Nutritional Neuroscience
https://www.readbyqxmd.com/read/29419708/intravenous-calcium-zinc-diethylene-triamine-penta-acetic-acid-in-patients-with-presumed-gadolinium-deposition-disease-a-preliminary-report-on-25-patients
#5
Richard C Semelka, Miguel Ramalho, Michael Jay, Lisa Hickey, Joseph Hickey
OBJECTIVES: The aim of this study was to report the use of intravenous calcium (Ca)-/zinc (Zn)-diethylene triamine penta-acetic acid (DTPA) for the treatment of 25 symptomatic patients diagnosed with gadolinium deposition disease (GDD). MATERIALS AND METHODS: Written informed consent was obtained. Twenty-five patients (18 women; mean age, 46.8 ± 15.3 years) with a diagnosis of GDD were included. All patients had received at least 1 administration of a gadolinium (Gd)-based contrast agent...
February 6, 2018: Investigative Radiology
https://www.readbyqxmd.com/read/29416501/function-of-b-cell-cll-lymphoma-11b-in-glial-progenitor-proliferation-and-oligodendrocyte-maturation
#6
Chih-Yen Wang, Yuan-Ting Sun, Kuan-Min Fang, Chia-Hsin Ho, Chung-Shi Yang, Shun-Fen Tzeng
B-cell CLL/lymphoma 11B (Bcl11b) - a C2H2 zinc finger transcriptional factor - is known to regulate neuronal differentiation and function in the development of the central nervous system (CNS). Although its expression is reduced during oligodendrocyte (OLG) differentiation, its biological role in OLGs remains unknown. In this study, we found that the downregulation of Bcl11b gene expression in glial progenitor cells (GPCs) by lentivirus-mediated gene knockdown (KD) causes a reduction in cell proliferation with inhibited expression of stemness-related genes, while increasing the expression of cell cyclin regulator p21...
2018: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29408665/selenium-and-zinc-two-key-players-against-cadmium-induced-neuronal-toxicity
#7
Jacopo J V Branca, Gabriele Morucci, Mario Maresca, Barbara Tenci, Roberta Cascella, Ferdinando Paternostro, Carla Ghelardini, Massimo Gulisano, Lorenzo Di Cesare Mannelli, Alessandra Pacini
Cadmium (Cd), a worldwide occupational pollutant, is an extremely toxic heavy metal, capable of damaging several organs, including the brain. Its toxicity has been related to neurodegenerative diseases such as Alzheimer's and Parkinson's diseases. The neurotoxic potential of Cd has been attributed to the changes induced in the brain enzyme network involved in counteracting oxidative stress. On the other hand, it is also known that trace elements, such as zinc (Zn) and selenium (Se), required for optimal brain functions, appears to have beneficial effects on the prevention of Cd intoxication...
January 29, 2018: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/29405739/is-vegetarianism-healthy-for-children
#8
Nathan Cofnas
According to the Academy of Nutrition and Dietetics' influential position statement on vegetarianism, meat and seafood can be replaced with milk, soy/legumes, and eggs without any negative effects in children. The United States Department of Agriculture endorses a similar view. The present paper argues that the Academy of Nutrition and Dietetics ignores or gives short shrift to direct and indirect evidence that vegetarianism may be associated with serious risks for brain and body development in fetuses and children...
February 6, 2018: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/29402131/neurotoxicity-linked-to-dysfunctional-metal-ion-homeostasis-and-xenobiotic-metal-exposure-redox-signaling-and-oxidative-stress
#9
Carla Garza-Lombo, Yanahi Posadas, Liliana Quintanar, Maria E Gonsebatt, Rodrigo Franco
SIGNIFICANCE: Essential metals such as copper, iron, manganese and zinc play a role as cofactors in the activity of a wide range of processes involved in cellular homeostasis and survival, as well as during organ and tissue development. Throughout our lifespan, humans are also exposed to xenobiotic metals from natural and anthropogenic sources including aluminum, arsenic, cadmium, lead and mercury. It is well recognized that alterations in the homeostasis of essential metals and an increased environmental/occupational exposure to xenobiotic metals is linked to several neurological disorders including neurodegeneration and neurodevelopmental alterations...
February 5, 2018: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29399656/severe-neonatal-hyperbilirubinemia-in-crigler-najjar-syndrome-model-mice-can-be-reversed-with-zinc-protoporphyrin
#10
Ryoichi Fujiwara, Ryo Mitsugi, Asuka Uemura, Tomoo Itoh, Robert H Tukey
Neurotoxic bilirubin is solely conjugated by UDP-glucuronosyltransferase (UGT) 1A1. Due to an inadequate function of UGT1A1, human neonates develop mild to severe physiological hyperbilirubinemia. Accumulation of bilirubin in the brain leads to the onset of irreversible brain damage called kernicterus. Breastfeeding is one of the most significant factors that increase the risk of developing kernicterus in infants. Why does the most natural way of feeding increase the risk of brain damage or even death? This question leads to the hypothesis that breast milk-induced neonatal hyperbilirubinemia might bring certain benefits to the body...
October 2017: Hepatology Communications
https://www.readbyqxmd.com/read/29393650/design-of-magnetically-labeled-cells-mag-cells-for-in-vivo-control-of-stem-cell-migration-and-differentiation
#11
Seokhwan Yun, Tae-Hyun Shin, Jae-Hyun Lee, Mi Hyeon Cho, Il-Sun Kim, Ji-Wook Kim, Kwangsoo Jung, Il-Shin Lee, Jinwoo Cheon, Kook In Park
Cell-based therapies are attractive for treating various degenerative disorders and cancer but delivering functional cells to the region of interest in vivo remains difficult. The problem is exacerbated in dense biological matrices such as solid tissues because these environments impose significant steric hindrances for cell movement. Here, we show that neural stem cells transfected with zinc-doped ferrite magnetic nanoparticles (ZnMNPs) can be pulled by an external magnet to migrate to the desired location in the brain...
February 2, 2018: Nano Letters
https://www.readbyqxmd.com/read/29390069/long-non-coding-rna-associated-transcriptomic-changes-in-resiliency-or-susceptibility-to-depression-and-response-to-antidepressant-treatment
#12
Bhaskar Roy, Qingzhong Wang, Yogesh Dwivedi
Background: Recent emergence of long non-coding RNAs (lncRNAs) in regulating gene expression and thereby modulating physiological functions in brain has manifested their possible role in psychiatric disorders. In this study, the roles of lncRNAs in susceptibility and resiliency to develop stress-induced depression and their response to antidepressant treatment were examined. Methods: Microarray based transcriptome-wide changes in lncRNAs was determined in hippocampus of male Holtzman rats who showed susceptibility (learned helpless; LH) or resiliency (non-learned helpless; NLH) to develop depression...
January 30, 2018: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29388001/ppar%C3%AE-in-yellow-catfish-pelteobagrus-fulvidraco-molecular-characterization-tissue-expression-and-transcriptional-regulation-by-dietary-cu-and-zn
#13
Wen-Jing You, Xiao-Ying Tan, Guang-Hui Chen, Chuan-Chuan Wei, Dan-Dan Li
Peroxisome proliferator-activated receptor beta (PPARβ) is a ligand-activated transcription factor that plays critical roles in the regulation of many important physiological processes. In this study, PPARβ was cloned and characterized in yellow catfish Pelteobagrus fulvidraco. PPARβ cDNA was 2350 bp in length with an open reading frame (ORF) of 1530 bp, encoding 509 amino acids, a 5'-untranslated region (UTR) of 474 bp, and a 3'-UTR of 346 bp. Similar to mammals, PPARβ protein was predicted to consist of four domains, the A/B domain, DNA-binding domain (DBD), D domain, and ligand-binding domain (LBD)...
February 1, 2018: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/29382362/hypermanganesemia-due-to-mutations-in-slc39a14-further-insights-into-mn-deposition-in-the-central-nervous-system
#14
L Marti-Sanchez, J D Ortigoza-Escobar, A Darling, M Villaronga, H Baide, M Molero-Luis, M Batllori, M I Vanegas, J Muchart, L Aquino, R Artuch, A Macaya, M A Kurian, Pérez Dueñas
BACKGROUND: The SLC39A14, SLC30A10 and SLC39A8 are considered to be key genes involved in manganese (Mn) homeostasis in humans. Mn levels in plasma and urine are useful tools for early recognition of these disorders. We aimed to explore further biomarkers of Mn deposition in the central nervous system in two siblings presenting with acute dystonia and hypermanganesemia due to mutations in SLC39A14. These biomarkers may help clinicians to establish faster and accurate diagnosis and to monitor disease progression after chelation therapy is administered...
January 30, 2018: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/29382141/zinc-carnosine-and-neurodegenerative-diseases
#15
REVIEW
Masahiro Kawahara, Ken-Ichiro Tanaka, Midori Kato-Negishi
Zinc (Zn) is abundantly present in the brain, and accumulates in the synaptic vesicles. Synaptic Zn is released with neuronal excitation, and plays essential roles in learning and memory. Increasing evidence suggests that the disruption of Zn homeostasis is involved in various neurodegenerative diseases including Alzheimer's disease, a vascular type of dementia, and prion diseases. Our and other numerous studies suggest that carnosine (β-alanyl histidine) is protective against these neurodegenerative diseases...
January 29, 2018: Nutrients
https://www.readbyqxmd.com/read/29378430/the-potential-role-of-insulin-like-growth-factor-1-and-zinc-in-brain-growth-of-autism-spectrum-disorder-children
#16
Rami Bou Khalil
No abstract text is available yet for this article.
January 1, 2018: Autism: the International Journal of Research and Practice
https://www.readbyqxmd.com/read/29358479/advocacy-for-improving-nutrition-in-the-first-1000-days-to-support-childhood-development-and-adult-health
#17
Sarah Jane Schwarzenberg, Michael K Georgieff
Maternal prenatal nutrition and the child's nutrition in the first 2 years of life (1000 days) are crucial factors in a child's neurodevelopment and lifelong mental health. Child and adult health risks, including obesity, hypertension, and diabetes, may be programmed by nutritional status during this period. Calories are essential for growth of both fetus and child but are not sufficient for normal brain development. Although all nutrients are necessary for brain growth, key nutrients that support neurodevelopment include protein; zinc; iron; choline; folate; iodine; vitamins A, D, B6, and B12; and long-chain polyunsaturated fatty acids...
January 22, 2018: Pediatrics
https://www.readbyqxmd.com/read/29348190/pronounced-hyperactivity-cognitive-dysfunctions-and-bdnf-dysregulation-in-dopamine-transporter-knockout-rats
#18
Damiana Leo, Ilya Sukhanov, Francesca Zoratto, Placido Illiano, Lucia Caffino, Fabrizio Sanna, Giulia Messa, Marco Emanuele, Alessandro Esposito, Maria Dorofeikova, Evgeny A Budygin, Liudmila Mus, Evgenia E Efimova, Marco Niello, Stefano Espinoza, Tatyana D Sotnikova, Marius C Hoener, Gianni Laviola, Fabio Fumagalli, Walter Adriani, Raul R Gainetdinov
Dopamine (DA) controls many vital physiological functions and is critically involved in several neuropsychiatric disorders such as schizophrenia and attention deficit hyperactivity disorder (ADHD). The major function of the plasma membrane dopamine transporter (DAT) is the rapid uptake of released DA into presynaptic nerve terminals leading to control of both the extracellular levels of DA and the intracellular stores of DA. Here, we present a newly developed strain of rats (DAT-knockout, DAT-KO rats) in which the gene encoding the DAT has been disrupted by using zinc finger nuclease technology (ZFN)...
January 18, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29345288/downregulation-of-mir%C3%A2-205-is-associated-with-glioblastoma-cell-migration-invasion-and-the-epithelial-mesenchymal-transition-by-targeting-zeb1-via-the-akt-mtor-signaling-pathway
#19
Wei Chen, Kuan-Kei Kong, Xin-Ke Xu, Cheng Chen, Hui Li, Fang-Yu Wang, Xiao-Fang Peng, Zhan Zhang, Ping Li, Jun-Liang Li, Fang-Cheng Li
Glioblastoma (GBM) is the most common type of malignant brain tumor. In spite of recent advancements in surgical techniques, chemotherapy, and radiation therapy, patients with GBM often face a dire prognosis. MicroRNAs have been shown to modulate the aggressiveness of various cancers, and have emerged as possible therapeutic agents for the management of GBM. miR‑205 is dysregulated in glioma and act as a prognostic indicator. However, the role of miR‑205 in the development of GBM has not been elucidated...
February 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29340742/-wilson-disease
#20
D Huster
Wilson disease is a rare hereditary disorder of copper metabolism. The genetic defect is caused by various mutations in the copper-transporting enzyme ATP7B, located mainly in the liver and brain. Clinical symptoms are highly variable, with any combination of hepatic and/or neurological or psychiatric manifestations. The age of onset varies from early childhood to young adults and can even be manifested in later ages. The clinical diagnosis is based on a combination of clinical, biochemical and molecular markers...
January 16, 2018: Der Internist
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