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  • 1
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    Innate and adaptive immunity cooperate flexibly to maintain host-microbiota mutualism (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-08-01
    Description: Commensal bacteria in the lower intestine of mammals are 10 times as numerous as the body's cells. We investigated the relative importance of different immune mechanisms in limiting the spread of the intestinal microbiota. Here, we reveal a flexible continuum between innate and adaptive immune function in containing commensal microbes. Mice deficient in critical innate immune functions such as Toll-like receptor signaling or oxidative burst production spontaneously produce high-titer serum antibodies against their commensal microbiota. These antibody responses are functionally essential to maintain host-commensal mutualism in vivo in the face of innate immune deficiency. Spontaneous hyper-activation of adaptive immunity against the intestinal microbiota, secondary to innate immune deficiency, may clarify the underlying mechanisms of inflammatory diseases where immune dysfunction is implicated.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3730530/" 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/PMC3730530/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Slack, Emma -- Hapfelmeier, Siegfried -- Stecher, Barbel -- Velykoredko, Yuliya -- Stoel, Maaike -- Lawson, Melissa A E -- Geuking, Markus B -- Beutler, Bruce -- Tedder, Thomas F -- Hardt, Wolf-Dietrich -- Bercik, Premysl -- Verdu, Elena F -- McCoy, Kathy D -- Macpherson, Andrew J -- AI56363/AI/NIAID NIH HHS/ -- CA105001/CA/NCI NIH HHS/ -- R01 CA105001/CA/NCI NIH HHS/ -- U19 AI056363/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2009 Jul 31;325(5940):617-20. doi: 10.1126/science.1172747.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON L8S 4L8, Canada. andrew.macpherson@insel.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19644121" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Bacterial/biosynthesis/blood/*immunology ; Bacteremia/immunology/microbiology ; Bacteria/growth & development/*immunology/isolation & purification ; Bacterial Infections/immunology/microbiology ; CD4-Positive T-Lymphocytes/immunology ; Colony Count, Microbial ; Enterococcus faecalis/growth & development/immunology/isolation & purification ; Escherichia coli K12/growth & development/immunology/isolation & purification ; Germ-Free Life ; Immunity ; *Immunity, Innate ; Intestinal Mucosa/immunology/*microbiology ; Intestines/immunology/*microbiology ; Lymphoid Tissue/microbiology ; Mice ; Mice, Inbred C57BL ; Permeability ; Respiratory Burst ; Signal Transduction ; Specific Pathogen-Free Organisms ; Spleen/microbiology ; Toll-Like Receptors/genetics/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Reversible microbial colonization of germ-free mice reveals the dynamics of IgA immune responses (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-06-26
    Description: The lower intestine of adult mammals is densely colonized with nonpathogenic (commensal) microbes. Gut bacteria induce protective immune responses, which ensure host-microbial mutualism. The continuous presence of commensal intestinal bacteria has made it difficult to study mucosal immune dynamics. Here, we report a reversible germ-free colonization system in mice that is independent of diet or antibiotic manipulation. A slow (more than 14 days) onset of a long-lived (half-life over 16 weeks), highly specific anticommensal immunoglobulin A (IgA) response in germ-free mice was observed. Ongoing commensal exposure in colonized mice rapidly abrogated this response. Sequential doses lacked a classical prime-boost effect seen in systemic vaccination, but specific IgA induction occurred as a stepwise response to current bacterial exposure, such that the antibody repertoire matched the existing commensal content.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3923373/" 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/PMC3923373/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hapfelmeier, Siegfried -- Lawson, Melissa A E -- Slack, Emma -- Kirundi, Jorum K -- Stoel, Maaike -- Heikenwalder, Mathias -- Cahenzli, Julia -- Velykoredko, Yuliya -- Balmer, Maria L -- Endt, Kathrin -- Geuking, Markus B -- Curtiss, Roy 3rd -- McCoy, Kathy D -- Macpherson, Andrew J -- R01 AI060557/AI/NIAID NIH HHS/ -- Canadian Institutes of Health Research/Canada -- New York, N.Y. -- Science. 2010 Jun 25;328(5986):1705-9. doi: 10.1126/science.1188454.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉DKF (Maurice Muller Laboratories), MEM, Universitatsklinik fur Viszerale Chirurgie und Medizin (UVCM), University of Bern, 3013 Bern, Switzerland. hapfelmeier@gmail.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20576892" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Bacterial/biosynthesis/*immunology ; Antibody Specificity ; Colony Count, Microbial ; Dose-Response Relationship, Immunologic ; Escherichia coli/*growth & development/*immunology ; Germ-Free Life ; Half-Life ; Immunoglobulin A/biosynthesis/*immunology ; Immunologic Memory ; Intestinal Mucosa/*immunology/*microbiology ; Intestines/immunology/microbiology ; Mice ; Mice, Inbred C57BL ; Mucous Membrane/immunology ; Plasma Cells/immunology ; Time Factors
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
    Electronic Resource
    Electronic Resource
    Production of conidia by Peronospora farinosa f. sp. spinaciae (1987)
    Springer
    European journal of plant pathology 93 (1987), S. 189-194 
    Details
    ISSN: 1573-8469
    Keywords: sporulation ; infectious period ; downy mildew ; spinach
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Samenvatting De conidiënproduktie vanPeronospora farinosa f. sp. spinaciae (fysio 3) werd dagelijks bepaald aan kolonies, welke op bladeren van de spinaziecultivars Breedblad Scherpzaad (BS) en Huro werden geïnduceerd. Daarbij werd onderscheid gemaakt tussen kolonies welke zich bij 10 en bij 15 °C hadden ontwikkeld. De sporenproduktie werd omgerekend naar het aantal sporen per huidmondje. Er was een significant verschil tussen de totale sporenproduktie op lesies op ‘BS’ bij 10 °C en die op lesies op de drie andere getoetste cultivar-temperatuur combinaties. Er kon ook een significant verschil in de gemiddelde sporulatieperiode worden waargenomen tussen de lesies ontstaan bij 10 en bij 15 °C. Een dergelimk significant verschil in temperatuurreactie kon ook worden gevonden in het verloop van de soorulatie per huidmondje in de tijd.
    Notes: Abstract Conidium production byPeronospora farinosa f. sp.spinaciae (pathotype 3) was measured daily on colonies induced on leaves of spinach cvs Breedblad Scherpzaad (BS) and Huro. Distinction was made between colonies grown at temperatures of 10 and 15°C. Spore production was expressed as number of spores produced per stoma. There was a significant difference between total spore production on lesions on ‘BS’ at 10 °C and that on lesions on the three other cultivartemperature combinations tested. Also a significant difference in the average sporulation period was observed between lesions produced at 10 and those at 15 °C. The same significant difference in response to temperature was found in the sporulation per stoma in the course of time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02015664
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  • 4
    Electronic Resource
    Electronic Resource
    An analysis of the breeding value of diploid potato clones comparing 2X−2X and 4X−2X crosses (1991)
    Springer
    Euphytica 52 (1991), S. 131-136 
    Details
    ISSN: 1573-5060
    Keywords: Solanum tuberosum ; potato ; tuber yield ; under water weight ; general combining ability ; special combining ability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Tuber yield and dry matter content, measured as under water weight (UWW), of 24 diploid 2x−2x progenies and 12 tetraploid 4x−2x progenies, have been measured in the seedling generation and the first clonal generation. The results were used to evaluate predictions of progeny means, and to compare the general combining ability (GCA) estimated from 2x−2x crosses with the GCA estimated from 4x−2x crosses. Based on parental values and the means of the seedling as well as first clonal generation, the prediction of UWW of the 2x−2x and the 4x−2x progenies was better than that of tuber yield. For GCA similar differences between UWW and tuber yield were found. Three diploid clones were used both for the 2x−2x crosses and the 4x−2x crosses. The ranking of the GCA values, estimated from the 2x−2x crosses, was similar to that obtained from the 4x−2x crosses for UWW in both generations and, to a lesser extent, for tuber yield in the first clonal generation, suggesting, that it might not be necessary to carry out 4x−2x testcrosses to identify diploid clones with superior GCA for tuber yield and dry matter content.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00021326
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  • 5
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    Interplay between FKBP65 and lysyl hydroxylase 2 [Biochemistry] (2016)
    National Academy of Sciences
    Details
    Publication Date: 2016-06-30
    Description: Collagens are subjected to extensive posttranslational modifications, such as lysine hydroxylation. Bruck syndrome (BS) is a connective tissue disorder characterized at the molecular level by a loss of telopeptide lysine hydroxylation, resulting in reduced collagen pyridinoline cross-linking. BS results from mutations in the genes coding for lysyl hydroxylase (LH) 2...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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