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  • 1
    Electronic Resource
    Electronic Resource
    Dehalogenation of 3-chlorobenzoate by immobilized Pseudomonas sp. B13 cells (1988)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 31 (1988), S. 889-893 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260310818
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  • 2
    Electronic Resource
    Electronic Resource
    Heterogeneous hydrolysis of cotton cellulose treated with different swelling agents (1963)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 7 (1963), S. 15-26 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Acid hydrolyses of untreated cotton (scoured) and cottons treated in slack with three swelling agents were carried out for different periods. It was found that treatment with swelling agents decreases crystallinity and fiber strength and increases reactivity of cellulose. Such treatments also improve the strength-fluidity relation of the fibers. Swelling treatment with sodium hydroxide (NaOH) or ethylenediamine (EDA) improves strength uniformity along the fiber length. Both mild and drastic hydrolyses increase crystallinity of the untreated and the treated cottons. Crystallinity figures obtained by x-ray diffraction technique are different from those obtained by iodine sorption method. Treatment of acid-hydrolyzed cotton fibers with sodium hydroxide improves fiber strength considerably. When acid-hydrolyzed cotton is swollen with zinc chloride solution, crystallinity (x-ray) drops down to as low as 36%.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1963.070070102
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  • 3
    Electronic Resource
    Electronic Resource
    Regioselective Silane-Terminated Intramolecular Heck Reaction with Alkenyl Triflates and Alkenyl Iodides (2000)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 2000 (2000), S. 1959-1964 
    Details
    ISSN: 1434-193X
    Keywords: C-C coupling ; Palladium ; Silanes ; Catalysts ; Allylsilanes ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: ---One of the main problems of the Heck reaction using acyclic substrates which lead to Pd intermediates with β- and β′-hydrogens is the lack of selectivity in the formation of the double bond as the last step of the catalytic cycle. The use of allylsilanes as the alkene moiety permits control of the elimination step. Thus, the Pd0-catalysed reaction of 1a-c and 2 leads exclusively to the corresponding bicyclic compounds 11a-c. In contrast, reaction of 7 yields a mixture of 12a, (E)-12b and (Z)-12b.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    The photochemistry of polymers containing anthrylmethyl vinyl ketone (1995)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 33 (1995), S. 197-201 
    Details
    ISSN: 0887-624X
    Keywords: anthryl methyl vinyl ketone ; polymer ; photolysis ; drug delivery ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The photolysis of copolymers of anthrylmethyl vinyl ketone (AMVK) with styrene and methyl methacrylate has been studied, both in solution and in the solid phase. Quantum yields of the order of 0.01 were observed in both cases for release of the major product, methyl anthracene (MA). Photolysis of an aqueous emulsion of a styrene-AMVK copolymer showed similar yields of MA. The results indicate the possibility of using the Norrish type I process as a means of releasing drugs or other biologically active compounds from polymeric matrices. © 1995 John Wiley & Sons, Inc.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1995.080330202
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  • 5
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    Protection against cutaneous leishmaniasis resulting from bites of uninfected sand flies (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-11-18
    Description: Despite the fact that Leishmania are transmitted exclusively by sand flies, none of the experimental models of leishmaniasis have established infection via sand fly bites. Here we describe a reproducible murine model of Leishmania major infection transmitted by Phlebotomus papatasi. Prior exposure of mice to bites of uninfected sand flies conferred powerful protection against Leishmania major that was associated with a strong delayed-type hypersensitivity response and with interferon-gamma production at the site of parasite delivery. These results have important implications for the epidemiology of cutaneous leishmaniasis and suggest a vaccination strategy against this and possibly other vector-borne diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kamhawi, S -- Belkaid, Y -- Modi, G -- Rowton, E -- Sacks, D -- New York, N.Y. -- Science. 2000 Nov 17;290(5495):1351-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11082061" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dermis/immunology/parasitology ; Disease Models, Animal ; Ear ; Epidermis/immunology/parasitology ; Female ; Humans ; Hypersensitivity, Delayed ; *Insect Bites and Stings ; *Insect Vectors/parasitology ; Interferon-gamma/biosynthesis ; Interleukins/biosynthesis ; *Leishmania major/physiology ; Leishmaniasis, Cutaneous/*immunology/parasitology/*transmission ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; *Phlebotomus/parasitology ; Saliva/immunology
    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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  • 6
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    A novel vasodilatory peptide from the salivary glands of the sand fly Lutzomyia longipalpis (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-01-13
    Description: Salivary gland lysates of the sand fly Lutzomyia longipalpis contain a potent vasodilator that aids the fly to feed on the blood of its vertebrate hosts. Chromatographic analysis, antibody reactivity, and data obtained from bioassays of the salivary erythema-inducing factor indicate striking similarity with human calcitonin gene-related peptide. The erythema-inducing factor is, however, at least one order of magnitude more potent than calcitonin gene-related peptide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ribeiro, J M -- Vachereau, A -- Modi, G B -- Tesh, R B -- AI18694-0481/AI/NIAID NIH HHS/ -- AI21049/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1989 Jan 13;243(4888):212-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Tropical Public Health, Harvard School of Public Health, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2783496" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aorta/drug effects/physiology ; Calcitonin/pharmacology ; Calcitonin Gene-Related Peptide ; Chromatography, High Pressure Liquid ; Diptera ; Erythema ; Humans ; In Vitro Techniques ; Muscle, Smooth, Vascular/drug effects/*physiology ; Neuropeptides/pharmacology ; Rabbits ; Salivary Proteins and Peptides/*isolation & purification/pharmacology ; Vasodilation ; *Vasodilator Agents
    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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  • 7
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    Antibiotic treatment expands the resistance reservoir and ecological network of the phage metagenome (2013)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2013-06-12
    Description: The mammalian gut ecosystem has considerable influence on host physiology, but the mechanisms that sustain this complex environment in the face of different stresses remain obscure. Perturbations to the gut ecosystem, such as through antibiotic treatment or diet, are at present interpreted at the level of bacterial phylogeny. Less is known about the contributions of the abundant population of phages to this ecological network. Here we explore the phageome as a potential genetic reservoir for bacterial adaptation by sequencing murine faecal phage populations following antibiotic perturbation. We show that antibiotic treatment leads to the enrichment of phage-encoded genes that confer resistance via disparate mechanisms to the administered drug, as well as genes that confer resistance to antibiotics unrelated to the administered drug, and we demonstrate experimentally that phages from treated mice provide aerobically cultured naive microbiota with increased resistance. Systems-wide analyses uncovered post-treatment phage-encoded processes related to host colonization and growth adaptation, indicating that the phageome becomes broadly enriched for functionally beneficial genes under stress-related conditions. We also show that antibiotic treatment expands the interactions between phage and bacterial species, leading to a more highly connected phage-bacterial network for gene exchange. Our work implicates the phageome in the emergence of multidrug resistance, and indicates that the adaptive capacity of the phageome may represent a community-based mechanism for protecting the gut microflora, preserving its functional robustness during antibiotic stress.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3710538/" 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/PMC3710538/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Modi, Sheetal R -- Lee, Henry H -- Spina, Catherine S -- Collins, James J -- DP1 OD003644/OD/NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2013 Jul 11;499(7457):219-22. doi: 10.1038/nature12212. Epub 2013 Jun 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23748443" target="_blank"〉PubMed〈/a〉
    Keywords: Aerobiosis ; Ampicillin/pharmacology ; Animals ; Anti-Bacterial Agents/*pharmacology ; Bacteriophages/*drug effects/genetics/isolation & purification ; Ciprofloxacin/pharmacology ; Drug Resistance, Microbial/*drug effects/genetics ; Feces/*microbiology/*virology ; Female ; Gene Transfer, Horizontal/drug effects/genetics ; Genes, Viral/drug effects/genetics ; Genome, Viral/*genetics ; Host Specificity/drug effects ; Metagenome/drug effects/*genetics ; Mice ; Symbiosis/drug effects/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 8
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    Langerhans cells facilitate epithelial DNA damage and squamous cell carcinoma (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-01-10
    Description: Polyaromatic hydrocarbons (PAHs) are prevalent, potent carcinogens, and 7,12-dimethylbenz[a]anthracene (DMBA) is a model PAH widely used to study tumorigenesis. Mice lacking Langerhans cells (LCs), a signatory epidermal dendritic cell (DC), are protected from cutaneous chemical carcinogenesis, independent of T cell immunity. Investigation of the underlying mechanism revealed that LC-deficient skin was relatively resistant to DMBA-induced DNA damage. LCs efficiently metabolized DMBA to DMBA-trans-3,4-diol, an intermediate proximal to oncogenic Hras mutation, and DMBA-treated LC-deficient skin contained significantly fewer Hras mutations. Moreover, DMBA-trans-3,4-diol application bypassed tumor resistance in LC-deficient mice. Additionally, the genotoxic impact of DMBA on human keratinocytes was significantly increased by prior incubation with human-derived LC. Thus, tissue-associated DC can enhance chemical carcinogenesis via PAH metabolism, highlighting the complex relation between immune cells and carcinogenesis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3753811/" 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/PMC3753811/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Modi, Badri G -- Neustadter, Jason -- Binda, Elisa -- Lewis, Julia -- Filler, Renata B -- Roberts, Scott J -- Kwong, Bernice Y -- Reddy, Swapna -- Overton, John D -- Galan, Anjela -- Tigelaar, Robert -- Cai, Lining -- Fu, Peter -- Shlomchik, Mark -- Kaplan, Daniel H -- Hayday, Adrian -- Girardi, Michael -- 085780/Wellcome Trust/United Kingdom -- K08 AR002072/AR/NIAMS NIH HHS/ -- P30 CA016359/CA/NCI NIH HHS/ -- R01 AR056632/AR/NIAMS NIH HHS/ -- R01 CA102703/CA/NCI NIH HHS/ -- R01-AR044077/AR/NIAMS NIH HHS/ -- R01-AR056632/AR/NIAMS NIH HHS/ -- R01CA102703/CA/NCI NIH HHS/ -- T32 AR007016/AR/NIAMS NIH HHS/ -- Cancer Research UK/United Kingdom -- Department of Health/United Kingdom -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2012 Jan 6;335(6064):104-8. doi: 10.1126/science.1211600.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Dermatology, Yale University School of Medicine, New Haven, CT 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22223807" target="_blank"〉PubMed〈/a〉
    Keywords: 9,10-Dimethyl-1,2-benzanthracene/*analogs & derivatives/metabolism/toxicity ; Animals ; Aryl Hydrocarbon Hydroxylases/metabolism ; Carcinogens/*metabolism/*toxicity ; Carcinoma, Squamous Cell/*chemically induced/metabolism ; Cell Transformation, Neoplastic ; Cells, Cultured ; Cytochrome P-450 CYP1A1/metabolism ; Cytochrome P-450 CYP1B1 ; *DNA Damage ; Genes, ras ; Humans ; Keratinocytes/metabolism/pathology ; Langerhans Cells/immunology/*metabolism ; Mice ; Mice, Transgenic ; Skin Neoplasms/*chemically induced/metabolism ; T-Lymphocytes/immunology
    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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