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  • Articles  (108)
  • Rats  (108)
  • American Association for the Advancement of Science (AAAS)  (108)
  • 2020-2023
  • 2010-2014  (37)
  • 1995-1999  (71)
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  • Articles  (108)
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  • 1
    Publication Date: 1998-10-23
    Description: Patients with abetalipoproteinemia, a disease caused by defects in the microsomal triglyceride transfer protein (MTP), do not produce apolipoprotein B-containing lipoproteins. It was hypothesized that small molecule inhibitors of MTP would prevent the assembly and secretion of these atherogenic lipoproteins. To test this hypothesis, two compounds identified in a high-throughput screen for MTP inhibitors were used to direct the synthesis of a highly potent MTP inhibitor. This molecule (compound 9) inhibited the production of lipoprotein particles in rodent models and normalized plasma lipoprotein levels in Watanabe-heritable hyperlipidemic (WHHL) rabbits, which are a model for human homozygous familial hypercholesterolemia. These results suggest that compound 9, or derivatives thereof, has potential applications for the therapeutic lowering of atherogenic lipoprotein levels in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wetterau, J R -- Gregg, R E -- Harrity, T W -- Arbeeny, C -- Cap, M -- Connolly, F -- Chu, C H -- George, R J -- Gordon, D A -- Jamil, H -- Jolibois, K G -- Kunselman, L K -- Lan, S J -- Maccagnan, T J -- Ricci, B -- Yan, M -- Young, D -- Chen, Y -- Fryszman, O M -- Logan, J V -- Musial, C L -- Poss, M A -- Robl, J A -- Simpkins, L M -- Slusarchyk, W A -- Sulsky, R -- Taunk, P -- Magnin, D R -- Tino, J A -- Lawrence, R M -- Dickson, J K Jr -- Biller, S A -- New York, N.Y. -- Science. 1998 Oct 23;282(5389):751-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Metabolic Diseases, Bristol-Myers Squibb Pharmaceutical Research Institute, Princeton, NJ 08543-4000, USA. Wetterau_John_R@msmail.bms.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9784135" target="_blank"〉PubMed〈/a〉
    Keywords: Alanine Transaminase/blood ; Animals ; Apolipoproteins B/*blood ; Aspartate Aminotransferases/blood ; Carrier Proteins/*antagonists & inhibitors ; Cholesterol/*blood ; Cricetinae ; Disease Models, Animal ; Dose-Response Relationship, Drug ; Drug Design ; Drug Evaluation, Preclinical ; Fluorenes/chemistry/pharmacokinetics/*pharmacology ; Humans ; Hyperlipidemias/blood/drug therapy ; Hyperlipoproteinemia Type II/*blood/drug therapy ; Lipids/blood ; Lipoproteins/blood ; Liver/metabolism ; Mice ; Piperidines/chemistry/pharmacokinetics/*pharmacology ; Rabbits ; Rats ; Triglycerides/*blood/metabolism ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2012-04-14
    Description: Drug use and relapse involve learned associations between drug-associated environmental cues and drug effects. Extinction procedures in the clinic can suppress conditioned responses to drug cues, but the extinguished responses typically reemerge after exposure to the drug itself (reinstatement), the drug-associated environment (renewal), or the passage of time (spontaneous recovery). We describe a memory retrieval-extinction procedure that decreases conditioned drug effects and drug seeking in rat models of relapse, and drug craving in abstinent heroin addicts. In rats, daily retrieval of drug-associated memories 10 minutes or 1 hour but not 6 hours before extinction sessions attenuated drug-induced reinstatement, spontaneous recovery, and renewal of conditioned drug effects and drug seeking. In heroin addicts, retrieval of drug-associated memories 10 minutes before extinction sessions attenuated cue-induced heroin craving 1, 30, and 180 days later. The memory retrieval-extinction procedure is a promising nonpharmacological method for decreasing drug craving and relapse during abstinence.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3695463/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3695463/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xue, Yan-Xue -- Luo, Yi-Xiao -- Wu, Ping -- Shi, Hai-Shui -- Xue, Li-Fen -- Chen, Chen -- Zhu, Wei-Li -- Ding, Zeng-Bo -- Bao, Yan-ping -- Shi, Jie -- Epstein, David H -- Shaham, Yavin -- Lu, Lin -- Z99 DA999999/Intramural NIH HHS/ -- ZIA DA000434-12/Intramural NIH HHS/ -- New York, N.Y. -- Science. 2012 Apr 13;336(6078):241-5. doi: 10.1126/science.1215070.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Institute on Drug Dependence, Peking University, Beijing, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22499948" target="_blank"〉PubMed〈/a〉
    Keywords: Amygdala/enzymology ; Animals ; Behavior, Addictive/*prevention & control ; Cocaine/administration & dosage ; Cocaine-Related Disorders/*psychology/therapy ; Conditioning, Classical ; Conditioning, Operant ; Cues ; *Extinction, Psychological ; Heroin/administration & dosage ; Heroin Dependence/*psychology/therapy ; Humans ; Male ; *Memory ; Mental Recall ; Models, Animal ; Prefrontal Cortex/enzymology ; Protein Kinase C/metabolism ; Rats ; Rats, Sprague-Dawley ; Recurrence ; Self Administration ; Time Factors
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 1998-10-23
    Description: A map of 30,181 human gene-based markers was assembled and integrated with the current genetic map by radiation hybrid mapping. The new gene map contains nearly twice as many genes as the previous release, includes most genes that encode proteins of known function, and is twofold to threefold more accurate than the previous version. A redesigned, more informative and functional World Wide Web site (www.ncbi.nlm.nih.gov/genemap) provides the mapping information and associated data and annotations. This resource constitutes an important infrastructure and tool for the study of complex genetic traits, the positional cloning of disease genes, the cross-referencing of mammalian genomes, and validated human transcribed sequences for large-scale studies of gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Deloukas, P -- Schuler, G D -- Gyapay, G -- Beasley, E M -- Soderlund, C -- Rodriguez-Tome, P -- Hui, L -- Matise, T C -- McKusick, K B -- Beckmann, J S -- Bentolila, S -- Bihoreau, M -- Birren, B B -- Browne, J -- Butler, A -- Castle, A B -- Chiannilkulchai, N -- Clee, C -- Day, P J -- Dehejia, A -- Dibling, T -- Drouot, N -- Duprat, S -- Fizames, C -- Fox, S -- Gelling, S -- Green, L -- Harrison, P -- Hocking, R -- Holloway, E -- Hunt, S -- Keil, S -- Lijnzaad, P -- Louis-Dit-Sully, C -- Ma, J -- Mendis, A -- Miller, J -- Morissette, J -- Muselet, D -- Nusbaum, H C -- Peck, A -- Rozen, S -- Simon, D -- Slonim, D K -- Staples, R -- Stein, L D -- Stewart, E A -- Suchard, M A -- Thangarajah, T -- Vega-Czarny, N -- Webber, C -- Wu, X -- Hudson, J -- Auffray, C -- Nomura, N -- Sikela, J M -- Polymeropoulos, M H -- James, M R -- Lander, E S -- Hudson, T J -- Myers, R M -- Cox, D R -- Weissenbach, J -- Boguski, M S -- Bentley, D R -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1998 Oct 23;282(5389):744-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Sanger Centre, Hinxton Hall, Hinxton, Cambridge CB10 1SA UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9784132" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosomes, Human/*genetics ; Expressed Sequence Tags ; Gene Expression ; Genetic Markers ; *Genome, Human ; Human Genome Project ; Humans ; Internet ; *Physical Chromosome Mapping ; Rats ; Sequence Tagged Sites
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2014-01-05
    Description: Pregnenolone is considered the inactive precursor of all steroid hormones, and its potential functional effects have been largely uninvestigated. The administration of the main active principle of Cannabis sativa (marijuana), Delta(9)-tetrahydrocannabinol (THC), substantially increases the synthesis of pregnenolone in the brain via activation of the type-1 cannabinoid (CB1) receptor. Pregnenolone then, acting as a signaling-specific inhibitor of the CB1 receptor, reduces several effects of THC. This negative feedback mediated by pregnenolone reveals a previously unknown paracrine/autocrine loop protecting the brain from CB1 receptor overactivation that could open an unforeseen approach for the treatment of cannabis intoxication and addiction.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4057431/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4057431/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vallee, Monique -- Vitiello, Sergio -- Bellocchio, Luigi -- Hebert-Chatelain, Etienne -- Monlezun, Stephanie -- Martin-Garcia, Elena -- Kasanetz, Fernando -- Baillie, Gemma L -- Panin, Francesca -- Cathala, Adeline -- Roullot-Lacarriere, Valerie -- Fabre, Sandy -- Hurst, Dow P -- Lynch, Diane L -- Shore, Derek M -- Deroche-Gamonet, Veronique -- Spampinato, Umberto -- Revest, Jean-Michel -- Maldonado, Rafael -- Reggio, Patricia H -- Ross, Ruth A -- Marsicano, Giovanni -- Piazza, Pier Vincenzo -- 260515/European Research Council/International -- DA-003934/DA/NIDA NIH HHS/ -- DA-03672/DA/NIDA NIH HHS/ -- DA-09789/DA/NIDA NIH HHS/ -- K05 DA021358/DA/NIDA NIH HHS/ -- R01 DA003934/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 2014 Jan 3;343(6166):94-8. doi: 10.1126/science.1243985.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉INSERM, Neurocentre Magendie, Physiopathologie de la Plasticite Neuronale, U862, F-33000 Bordeaux, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24385629" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/*drug effects/metabolism ; Cannabinoid Receptor Antagonists/administration & dosage ; Cannabis/*toxicity ; Dronabinol/*toxicity ; Male ; Marijuana Abuse/drug therapy ; Mice ; Mice, Inbred C57BL ; Pregnenolone/*administration & dosage/*metabolism ; Rats ; Rats, Sprague-Dawley ; Rats, Wistar ; Receptor, Cannabinoid, CB1/*agonists/*antagonists & inhibitors
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  • 5
    Publication Date: 1996-08-16
    Description: Small synthetic molecules termed growth hormone secretagogues (GHSs) act on the pituitary gland and the hypothalamus to stimulate and amplify pulsatile growth hormone (GH) release. A heterotrimeric GTP-binding protein (G protein)-coupled receptor (GPC-R) of the pituitary and arcuate ventro-medial and infundibular hypothalamus of swine and humans was cloned and was shown to be the target of the GHSs. On the basis of its pharmacological and molecular characterization, this GPC-R defines a neuroendocrine pathway for the control of pulsatile GH release and supports the notion that the GHSs mimic an undiscovered hormone.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Howard, A D -- Feighner, S D -- Cully, D F -- Arena, J P -- Liberator, P A -- Rosenblum, C I -- Hamelin, M -- Hreniuk, D L -- Palyha, O C -- Anderson, J -- Paress, P S -- Diaz, C -- Chou, M -- Liu, K K -- McKee, K K -- Pong, S S -- Chaung, L Y -- Elbrecht, A -- Dashkevicz, M -- Heavens, R -- Rigby, M -- Sirinathsinghji, D J -- Dean, D C -- Melillo, D G -- Patchett, A A -- Nargund, R -- Griffin, P R -- DeMartino, J A -- Gupta, S K -- Schaeffer, J M -- Smith, R G -- Van der Ploeg, L H -- New York, N.Y. -- Science. 1996 Aug 16;273(5277):974-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Merck Research Laboratories, Rahway, NJ 07065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8688086" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; Codon ; DNA, Complementary/genetics ; GTP-Binding Proteins/metabolism ; Growth Hormone/*secretion ; Hormones/*metabolism ; Humans ; Hypothalamus, Middle/chemistry ; Indoles/*metabolism/pharmacology ; Macaca mulatta ; Molecular Sequence Data ; Oligopeptides/*metabolism ; Pituitary Gland/chemistry ; RNA, Complementary/genetics ; Rats ; Receptors, Cell Surface/analysis/chemistry/genetics/*metabolism ; *Receptors, G-Protein-Coupled ; Receptors, Ghrelin ; Spiro Compounds/*metabolism/pharmacology ; Swine
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  • 6
    Publication Date: 1996-05-03
    Description: The vascular complications of diabetes mellitus have been correlated with enhanced activation of protein kinase C (PKC). LY333531, a specific inhibitor of the beta isoform of PKC, was synthesized and was shown to be a competitive reversible inhibitor of PKC beta 1 and beta 2, with a half-maximal inhibitory constant of approximately 5 nM; this value was one-fiftieth of that for other PKC isoenzymes and one-thousandth of that for non-PKC kinases. When administered orally, LY333531 ameliorated the glomerular filtration rate, albumin excretion rate, and retinal circulation in diabetic rats in a dose-responsive manner, in parallel with its inhibition of PKC activities.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ishii, H -- Jirousek, M R -- Koya, D -- Takagi, C -- Xia, P -- Clermont, A -- Bursell, S E -- Kern, T S -- Ballas, L M -- Heath, W F -- Stramm, L E -- Feener, E P -- King, G L -- DK36836/DK/NIDDK NIH HHS/ -- EY05110-11/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1996 May 3;272(5262):728-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Research Division, Joslin Diabetes Center, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02215, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8614835" target="_blank"〉PubMed〈/a〉
    Keywords: Administration, Oral ; Albuminuria/prevention & control ; Animals ; Diabetes Mellitus, Experimental/*complications/enzymology/physiopathology ; Diabetic Angiopathies/enzymology/etiology/*prevention & control ; Diglycerides/metabolism ; Dose-Response Relationship, Drug ; Enzyme Activation ; Enzyme Inhibitors/chemistry/*pharmacology ; Glomerular Filtration Rate/drug effects ; Humans ; Indoles/administration & dosage/chemistry/*pharmacology ; Isoenzymes/*antagonists & inhibitors/metabolism ; Kidney Glomerulus/metabolism ; Male ; Maleimides/administration & dosage/chemistry/*pharmacology ; Muscle, Smooth, Vascular/enzymology ; Phosphorylation/drug effects ; Protein Kinase C/*antagonists & inhibitors/metabolism ; Protein Kinase C beta ; Rats ; Rats, Sprague-Dawley ; Regional Blood Flow/drug effects ; Renal Plasma Flow/drug effects ; Retina/metabolism ; Retinal Vessels/physiopathology ; Substrate Specificity
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  • 7
    Publication Date: 1997-02-07
    Description: Glial cell line-derived neurotrophic factor (GDNF) supports growth and survival of dopaminergic (DA) neurons. A replication-defective adenoviral (Ad) vector encoding human GDNF injected near the rat substantia nigra was found to protect DA neurons from the progressive degeneration induced by the neurotoxin 6-hydroxydopamine (6-OHDA) injected into the striatum. Ad GDNF gene therapy reduced loss of DA neurons approximately threefold 6 weeks after 6-OHDA lesion, as compared with no treatment or injection of Ad lacZ or Ad mGDNF (encoding a biologically inactive deletion mutant GDNF). These results suggest that Ad vector-mediated GDNF gene therapy may slow the DA neuronal cell loss in humans with Parkinson's disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Choi-Lundberg, D L -- Lin, Q -- Chang, Y N -- Chiang, Y L -- Hay, C M -- Mohajeri, H -- Davidson, B L -- Bohn, M C -- NS31957/NS/NINDS NIH HHS/ -- T32AG00107/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 1997 Feb 7;275(5301):838-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology and Anatomy, University of Rochester, Box 603, 601 Elmwood Avenue, Rochester, NY 14642, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9012352" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoviridae/genetics ; Animals ; Corpus Striatum/metabolism/pathology ; Dopamine/*physiology ; Gene Expression ; *Genetic Therapy ; Genetic Vectors ; Glial Cell Line-Derived Neurotrophic Factor ; Humans ; Male ; Molecular Sequence Data ; *Nerve Degeneration ; *Nerve Growth Factors ; Nerve Tissue Proteins/*genetics ; Neurons/pathology/physiology ; *Neuroprotective Agents ; Oxidopamine ; PC12 Cells ; Parkinson Disease/pathology/*therapy ; Rats ; Rats, Inbred F344 ; Substantia Nigra/metabolism/pathology ; Transgenes
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 2010-06-26
    Description: Because adult lung tissue has limited regeneration capacity, lung transplantation is the primary therapy for severely damaged lungs. To explore whether lung tissue can be regenerated in vitro, we treated lungs from adult rats using a procedure that removes cellular components but leaves behind a scaffold of extracellular matrix that retains the hierarchical branching structures of airways and vasculature. We then used a bioreactor to culture pulmonary epithelium and vascular endothelium on the acellular lung matrix. The seeded epithelium displayed remarkable hierarchical organization within the matrix, and the seeded endothelial cells efficiently repopulated the vascular compartment. In vitro, the mechanical characteristics of the engineered lungs were similar to those of native lung tissue, and when implanted into rats in vivo for short time intervals (45 to 120 minutes) the engineered lungs participated in gas exchange. Although representing only an initial step toward the ultimate goal of generating fully functional lungs in vitro, these results suggest that repopulation of lung matrix is a viable strategy for lung regeneration.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3640463/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3640463/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Petersen, Thomas H -- Calle, Elizabeth A -- Zhao, Liping -- Lee, Eun Jung -- Gui, Liqiong -- Raredon, MichaSam B -- Gavrilov, Kseniya -- Yi, Tai -- Zhuang, Zhen W -- Breuer, Christopher -- Herzog, Erica -- Niklason, Laura E -- HL 098220/HL/NHLBI NIH HHS/ -- R01 HL098220/HL/NHLBI NIH HHS/ -- R01 HL098220-01/HL/NHLBI NIH HHS/ -- R01 HL098220-02/HL/NHLBI NIH HHS/ -- T32 GM007171/GM/NIGMS NIH HHS/ -- T32 GM007171-26/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2010 Jul 30;329(5991):538-41. doi: 10.1126/science.1189345. Epub 2010 Jun 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biomedical Engineering, Yale University, New Haven, CT 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20576850" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bioreactors ; Detergents ; Endothelial Cells/cytology/physiology ; Epithelial Cells/cytology/physiology ; *Extracellular Matrix/physiology ; Humans ; *Lung/blood supply/cytology/physiology ; Lung Compliance ; Lung Transplantation ; Male ; Pulmonary Alveoli/blood supply/ultrastructure ; Pulmonary Gas Exchange ; Rats ; Rats, Inbred F344 ; *Regeneration ; Respiratory Mucosa/cytology ; Tissue Engineering/*methods ; Tissue Scaffolds
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  • 9
    Publication Date: 1997-04-25
    Description: Spinal cord injuries result in paralysis, because when damaged neurons die they are not replaced. Neurogenesis of electrophysiologically functional neurons occurred in spinal cord cultured from postnatal rats. In these cultures, the numbers of immunocytochemically identified neurons increased over time. Additionally, neurons identified immunocytochemically or electrophysiologically incorporated bromodeoxyuridine, confirming they had differentiated from mitotic cells in vitro. These findings suggest that postnatal spinal cord retains the capacity to generate functional neurons. The presence of neuronal precursor cells in postnatal spinal cord may offer new therapeutic approaches for restoration of function to individuals with spinal cord injuries.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kehl, L J -- Fairbanks, C A -- Laughlin, T M -- Wilcox, G L -- DA07097/DA/NIDA NIH HHS/ -- DA07234/DA/NIDA NIH HHS/ -- DE00225/DE/NIDCR NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1997 Apr 25;276(5312):586-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Graduate Program in Neuroscience, University of Minnesota, Minneapolis, MN 55455, USA. 55455, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9110976" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Bromodeoxyuridine/metabolism ; Cell Differentiation ; Cells, Cultured ; Culture Media ; Glial Fibrillary Acidic Protein/analysis ; Immunohistochemistry ; Mitosis ; Neurons/chemistry/*cytology/metabolism ; Phosphopyruvate Hydratase/analysis ; Rats ; Spinal Cord/chemistry/*cytology ; Tubulin/analysis
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  • 10
    Publication Date: 2012-08-04
    Description: Daily rhythms of mammalian physiology, metabolism, and behavior parallel the day-night cycle. They are orchestrated by a central circadian clock in the brain, the suprachiasmatic nucleus (SCN). Transcription of clock genes is sensitive to metabolic changes in reduction and oxidation (redox); however, circadian cycles in protein oxidation have been reported in anucleate cells, where no transcription occurs. We investigated whether the SCN also expresses redox cycles and how such metabolic oscillations might affect neuronal physiology. We detected self-sustained circadian rhythms of SCN redox state that required the molecular clockwork. The redox oscillation could determine the excitability of SCN neurons through nontranscriptional modulation of multiple potassium (K(+)) channels. Thus, dynamic regulation of SCN excitability appears to be closely tied to metabolism that engages the clockwork machinery.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3490628/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3490628/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Tongfei A -- Yu, Yanxun V -- Govindaiah, Gubbi -- Ye, Xiaoying -- Artinian, Liana -- Coleman, Todd P -- Sweedler, Jonathan V -- Cox, Charles L -- Gillette, Martha U -- EY014024/EY/NEI NIH HHS/ -- P30 DA018310/DA/NIDA NIH HHS/ -- P30DA018310/DA/NIDA NIH HHS/ -- R01 EY014024/EY/NEI NIH HHS/ -- R01 HL086870/HL/NHLBI NIH HHS/ -- R01 HL092571/HL/NHLBI NIH HHS/ -- R01HL086870/HL/NHLBI NIH HHS/ -- R01HL092571/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2012 Aug 17;337(6096):839-42. doi: 10.1126/science.1222826. Epub 2012 Aug 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22859819" target="_blank"〉PubMed〈/a〉
    Keywords: ARNTL Transcription Factors/genetics ; Animals ; *Circadian Rhythm ; Fluorometry ; Glutathione/metabolism ; Membrane Potentials ; Mice ; Mice, Mutant Strains ; NADP/metabolism ; Neurons/metabolism/*physiology ; Oxidation-Reduction ; Potassium Channels/metabolism ; Rats ; Suprachiasmatic Nucleus/cytology/metabolism/*physiology
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