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  • Springer  (27)
  • American Association for the Advancement of Science (AAAS)  (4)
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  • 1
    Publication Date: 2011-04-30
    Description: Stem cells cycle through active and quiescent states. Large populations of stem cells in an organ may cycle randomly or in a coordinated manner. Although stem cell cycling within single hair follicles has been studied, less is known about regenerative behavior in a hair follicle population. By combining predictive mathematical modeling with in vivo studies in mice and rabbits, we show that a follicle progresses through cycling stages by continuous integration of inputs from intrinsic follicular and extrinsic environmental signals based on universal patterning principles. Signaling from the WNT/bone morphogenetic protein activator/inhibitor pair is coopted to mediate interactions among follicles in the population. This regenerative strategy is robust and versatile because relative activator/inhibitor strengths can be modulated easily, adapting the organism to different physiological and evolutionary needs.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3321266/" 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/PMC3321266/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Plikus, Maksim V -- Baker, Ruth E -- Chen, Chih-Chiang -- Fare, Clyde -- de la Cruz, Damon -- Andl, Thomas -- Maini, Philip K -- Millar, Sarah E -- Widelitz, Randall -- Chuong, Cheng-Ming -- AR47364/AR/NIAMS NIH HHS/ -- AR60306/AR/NIAMS NIH HHS/ -- R01 AR042177/AR/NIAMS NIH HHS/ -- R01 AR042177-17/AR/NIAMS NIH HHS/ -- R01 AR042177-18/AR/NIAMS NIH HHS/ -- R01 AR060306/AR/NIAMS NIH HHS/ -- R01 AR060306-02/AR/NIAMS NIH HHS/ -- R01 AR060306-03/AR/NIAMS NIH HHS/ -- R01-AR42177/AR/NIAMS NIH HHS/ -- R01-AR47709/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 2011 Apr 29;332(6029):586-9. doi: 10.1126/science.1201647.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, University of Southern California (USC), Los Angeles, CA 90033, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21527712" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Morphogenetic Proteins/*metabolism ; Computer Simulation ; Hair Follicle/*cytology/*growth & development/metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Models, Biological ; Rabbits ; *Regeneration ; *Signal Transduction ; Stem Cells/*physiology ; Stochastic Processes ; Wnt Proteins/*metabolism
    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: 2016-04-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Burke, M -- Craxton, M -- Kolstad, C D -- Onda, C -- Allcott, H -- Baker, E -- Barrage, L -- Carson, R -- Gillingham, K -- Graff-Zivin, J -- Greenstone, M -- Hallegatte, S -- Hanemann, W M -- Heal, G -- Hsiang, S -- Jones, B -- Kelly, D L -- Kopp, R -- Kotchen, M -- Mendelsohn, R -- Meng, K -- Metcalf, G -- Moreno-Cruz, J -- Pindyck, R -- Rose, S -- Rudik, I -- Stock, J -- Tol, R S J -- New York, N.Y. -- Science. 2016 Apr 15;352(6283):292-3. doi: 10.1126/science.aad9634. Epub 2016 Apr 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Stanford University, Stanford, CA, USA. ; Stanford University, Stanford, CA, USA. ckolstad@stanford.edu. ; New York University, New York, NY, USA. ; University of Massachusetts, Amherst, MA, USA. ; Brown University, Providence, RI, USA. ; University of California, San Diego, CA, USA. ; Yale University, New Haven, CT, USA. ; University of Chicago, Chicago, IL, USA. ; World Bank, Washington, DC, USA. ; Arizona State University, Tempe, AZ, USA. ; Columbia University, New York, NY, USA. ; University of California, Berkeley, CA, USA. ; Northwestern University, Evanston, IL, USA. ; University of Miami, Coral Gables, FL, USA. ; Resources for the Future, Washington, DC, USA. ; University of California, Santa Barbara, CA, USA. ; Tufts University, Medford, MA, USA. ; Georgia Institute of Technology, Atlanta, GA, USA. ; Massachusetts Institute of Technology, Cambridge, MA, USA. ; Electric Power Research Institute, Palo Alto, CA, USA. ; Iowa State University, Ames, IA, USA. ; Harvard University, Cambridge, MA, USA. ; University of Sussex, Falmer, UK, and Vrije Universiteit Amsterdam, Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27081055" target="_blank"〉PubMed〈/a〉
    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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  • 3
    Publication Date: 2011-07-19
    Description: Brown rot decay removes cellulose and hemicellulose from wood--residual lignin contributing up to 30% of forest soil carbon--and is derived from an ancestral white rot saprotrophy in which both lignin and cellulose are decomposed. Comparative and functional genomics of the "dry rot" fungus Serpula lacrymans, derived from forest ancestors, demonstrated that the evolution of both ectomycorrhizal biotrophy and brown rot saprotrophy were accompanied by reductions and losses in specific protein families, suggesting adaptation to an intercellular interaction with plant tissue. Transcriptome and proteome analysis also identified differences in wood decomposition in S. lacrymans relative to the brown rot Postia placenta. Furthermore, fungal nutritional mode diversification suggests that the boreal forest biome originated via genetic coevolution of above- and below-ground biota.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eastwood, Daniel C -- Floudas, Dimitrios -- Binder, Manfred -- Majcherczyk, Andrzej -- Schneider, Patrick -- Aerts, Andrea -- Asiegbu, Fred O -- Baker, Scott E -- Barry, Kerrie -- Bendiksby, Mika -- Blumentritt, Melanie -- Coutinho, Pedro M -- Cullen, Dan -- de Vries, Ronald P -- Gathman, Allen -- Goodell, Barry -- Henrissat, Bernard -- Ihrmark, Katarina -- Kauserud, Havard -- Kohler, Annegret -- LaButti, Kurt -- Lapidus, Alla -- Lavin, Jose L -- Lee, Yong-Hwan -- Lindquist, Erika -- Lilly, Walt -- Lucas, Susan -- Morin, Emmanuelle -- Murat, Claude -- Oguiza, Jose A -- Park, Jongsun -- Pisabarro, Antonio G -- Riley, Robert -- Rosling, Anna -- Salamov, Asaf -- Schmidt, Olaf -- Schmutz, Jeremy -- Skrede, Inger -- Stenlid, Jan -- Wiebenga, Ad -- Xie, Xinfeng -- Kues, Ursula -- Hibbett, David S -- Hoffmeister, Dirk -- Hogberg, Nils -- Martin, Francis -- Grigoriev, Igor V -- Watkinson, Sarah C -- New York, N.Y. -- Science. 2011 Aug 5;333(6043):762-5. doi: 10.1126/science.1205411. Epub 2011 Jul 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉College of Science, University of Swansea, Singleton Park, Swansea SA2 8PP, UK. d.c.eastwood@swansea.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21764756" target="_blank"〉PubMed〈/a〉
    Keywords: Angiosperms/microbiology ; Basidiomycota/classification/enzymology/*genetics/physiology ; *Biodiversity ; Biological Evolution ; Biota ; Cell Wall/*metabolism ; Coniferophyta/microbiology ; Coriolaceae/enzymology/genetics/physiology ; Gene Expression Profiling ; Genes, Fungal ; Genomics ; Lignin/metabolism ; Mycorrhizae/enzymology/*genetics/physiology ; Oxidoreductases/genetics/metabolism ; Peroxidases/genetics/metabolism ; Phylogeny ; Proteome ; Symbiosis ; Trees/*microbiology ; Wood/metabolism/*microbiology
    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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  • 4
    ISSN: 1572-8773
    Keywords: carbonyl iron ; deferiprone (L) ; guinea pig ; iron ; iron chelators ; iron-overload
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The use of the iron chelator deferiprone (L, CP20, 1,2-dimethyl-3-hydroxypyrid-4-one) for the treatment of diseases of iron overload and other disorders is problematic and requires further evaluation. In this study the efficacy, toxicity and mechanism of action of orally administered L were investigated in the guinea pig using the carbonyl iron model of iron overload. In an acute trial, depletion of liver non-heme iron in drug-treated guinea pigs (normal iron status) was maximal (approximately 50% of control) after a single oral dose of L1 of 200 mg kg, suggesting a limited chelatable pool in normal tissue. There was no apparent toxicity up to 600 mg kg. In each of two sub-acute trials, normal and iron-loaded animals were fed L (300 mg kg day) or placebo for six days. Final mortalities were 12/20 (L) and 0/20 (placebo). Symptoms included weakness, weight loss and eye discharge. Iron-loaded as well as normal guinea pigs were affected, indicating that at this drug level iron loading was not protective. In a chronic trial guinea pigs received L (50 mg kg day) or placebo for six days per week over eight months. Liver non-heme iron was reduced in animals iron-loaded prior to the trial. The increase in a wave latency (electroretinogram), the foci of hepatic, myocardial and musculo-skeletal necrosis, and the decrease in white blood cells in the drug-treated/normal diet group even at the low dose of 50 mg kg day suggests that L may be unsuitable for the treatment of diseases which do not involve Fe overload. However, the low level of pathology in animals treated with iron prior to the trial suggests that even a small degree of iron overload (two-fold after eight months) is protective at this drug level. We conclude that the relationship between drug dose and iron status is critical in avoiding toxicity and must be monitored rigorously as cellular iron is depleted.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    BioMetals 2 (1989), S. 161-167 
    ISSN: 1572-8773
    Keywords: Fe chelation ; Thalassemia ; Fe overload ; Calcium ; Magnesium ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary Formation constants for the calcium(II), magnesium(II) and zinc(II) complexes of the orally effective iron chelator, pyridoxal isonicotinoyl hydrazone (PIH) and three analogues, pyridoxal benzoyl hydrazone (PBH), pyridoxalp-methoxybenzoyl hydrazone (PpMBH) and pyridoxalm-fluorobenzoyl hydrazone (PmFBH) have been determined by potentiometry at 25\dg C andI=0.1 M [KNO3]. The four ligands bind calcium(II) weakly and magnesium(II) only slightly more strongly, as a l: l complex which is formed at pH \s〉 8. The chelation of zinc(II) for all the ligands studied was greater than that for calcium(II) and magnesium(II), with complexation generally becoming significant at about pH 5. Thus, chelation of zinc(II) but not calcium(II) or magnesium(II) at physiological pH, 7.4 may be expected. Calculated values of the concentration of uncomplexed metal ion indicate that the selectivity of these ligands towards Fe(III) is comparable to that of the clinically used chelator desferrioxamine.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-0711
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1420-9071
    Keywords: Glutathione ; free radicals ; antioxidants ; oxidant stressors ; buthionine ; menadione
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Using a prokaryote (Escherichia coli) and a metazoa-resembling eukaryote (Ochromonas danica), we surveyed antioxidants which might overcome redox stress imposed by menadione sodium bisulphite (MD) and buthionine sulphoximine (BSO). BSO oxidant stress was evident only inO. danica; MD oxidant stress was evident in both organisms. Glutathione, its precursors, e.g. cysteine, homocysteine, and 2-oxo-4-thiazolidine carboxylic acid, and red blood cells, emerged as prime antioxidants for relieving BSO and MD oxidant stress. BSO and MD oxidant activity and antioxidant-annulling effect inO. danica were judged comparable to those found in animal cells whereas the resultsE. coli were not entirely equivalent. TheO. danica system emerged as a practical, rapid, and useful system for pinpointing oxidant stressors and antioxidants, and shows promise for studies with mammalian systems.
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  • 8
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Human Satellite III DNA is a major tandem repeat in the human genome and presents a TaqI-specific hypervariable restriction fragment length polymorphism when a Satellite III related sequence (228S) is used as a probe. In situ examination shows this sequence to be near specific for the region 9qh on chromosome 9 when it is used at low probe concentrations. However the region 9qh does not appear to be the only or even the primary source of the TaqI-deficient polymorphic sequences (TDPS). Rather, such sequences appear to be mostly present in chromosomes 20, 21, and 22, and these represent the largest regions of homogeneous Satellite III in the genome; they are also resistant to digestion with a range of other restriction endonucleases. The TDPS do not arise from either of the two currently recognized Satellite III-enriched genomic regions, namely autosomal ‘K-domains’, which form part of 15p in chromosome 15 or the heterochromatin of chromosome Y.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Anonymous DNA probes mapping to human chromosome 16 and the distal region of the human X chromosome were isolated from a genomic library constructed using lambda EMBL3 and DNA from a mouse/human hybrid. The hybrid cell contained a der(16)t(X;16)(q26;q24) as the only human chromosome. Fifty clones were isolated using total human DNA as a hybridisation probe. Forty six clones contained single copy DNA in addition to the repetitive DNA. Pre-reassociation with sonicated human DNA was used to map these clones by a combination of Southern blot analysis of a hybrid cell panel containing fragments of chromosomes 16 and X and in situ hybridisation. One clone mapped to 16pter →16p13.11, one clone to 16p13.3→16p13.11, four clones to 16p13.3→16p13.13, two clones to 16p13.13→16p13.11, one clone to 16p13.11, seven clones to 16p13.11→16q12 or 16q13, four clones to 16q12 or 16q13, three clones to 16q13→16q22.1, four clones to 16q22.105→16q24, and nineteen clones to Xq26→Xqter. Two clones mapping to 16p13 detected RFLPs. VK5 (D16S94) detected an MspI RFLP, PIC 0.37. VK20 (D16S96) detected a TaqI RFLP, PIC 0.37 and two MspI RFLPs, PIC 0.30 and 0.50. The adult polycystic kidney disease locus (PKD1) has also been assigned to 16p13. The RFLPs described will be of use for genetic counselling and in the isolation of the PKD1 gene. Similarly, the X clones may be used to isolate RFLPs for genetic counselling and the isolation of genes for the many diseases that map to Xq26→qter.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Human genetics 〈Berlin〉 89 (1992), S. 107-108 
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The human gene for the receptor for the Fc portion of IgA has been mapped to chromosome 19, more specifically to 19q13.4, by Southern blot analysis of somatic cell hybrids and in situ hybridization.
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