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  • 1
    Publikationsdatum: 2013-09-28
    Beschreibung: This report describes the fabrication of a novel microfluidics nanobiochip based on a composite comprising of nickel oxide nanoparticles (nNiO) and multiwalled carbon nanotubes (MWCNTs), as well as the chip's use in a biomedical application. This nanocomposite was integrated with polydimethylsiloxane (PDMS) microchannels, which were constructed using the photolithographic technique. A structural and morphological characterization of the fabricated microfluidics chip, which was functionalized with a bienzyme containing cholesterol oxidase (ChOx) and cholesterol esterase (ChEt), was accomplished using X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy. The XPS studies revealed that 9.3% of the carboxyl (COOH) groups present in the nNiO-MWCNT composite are used to form amide bonds with the NH2 groups of the bienzyme. The response studies on this nanobiochip reveal good reproducibility and selectivity, and a high sensitivity of 2.2 mA/mM/cm2. This integrated microfluidics biochip provides a promising low-cost platform for the rapid detection of biomolecules using minute samples. Scientific Reports 3 doi: 10.1038/srep02661
    Digitale ISSN: 2045-2322
    Thema: Allgemeine Naturwissenschaft
    Publiziert von Springer Nature
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Publikationsdatum: 2015-05-03
    Beschreibung: Chemical Reviews DOI: 10.1021/cr400659h
    Print ISSN: 0009-2665
    Digitale ISSN: 1520-6890
    Thema: Chemie und Pharmazie
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Publikationsdatum: 2012-03-18
    Beschreibung: Analytical Chemistry DOI: 10.1021/ac202265a
    Print ISSN: 0003-2700
    Digitale ISSN: 1520-6882
    Thema: Chemie und Pharmazie
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Publikationsdatum: 2014-04-18
    Beschreibung: AIM2-like receptors (ALRs) are a family of nucleic acid sensors essential for innate immune responses against viruses and bacteria. We performed an evolutionary analysis of ALR genes ( MNDA, PYHIN1, IFI16 , and AIM2 ) by analyzing inter- and intraspecies diversity. Maximum-likelihood analyses indicated that IFI16 and AIM2 evolved adaptively in primates, with branch-specific selection at the catarrhini lineage for IFI16 . Application of a population genetics–phylogenetics approach also allowed identification of positive selection events in the human lineage. Positive selection in primates targeted sites located at the DNA-binding interface in both IFI16 and AIM2. In IFI16, several sites positively selected in primates and in the human lineage were located in the PYD domain, which is involved in protein–protein interaction and is bound by a human cytomegalovirus immune evasion protein. Finally, positive selection was found to target nuclear localization signals in IFI16 and the spacer region separating the two HIN domains. Population genetic analysis in humans revealed that an IFI16 genic region has been a target of long-standing balancing selection, possibly acting on two nonsynonymous polymorphisms located in the spacer region. Data herein indicate that ALRs have been repeatedly targeted by natural selection. The balancing selection region in IFI16 carries a variant with opposite risk effect for distinct autoimmune diseases, suggesting antagonistic pleiotropy. We propose that the underlying scenario is the result of an ancestral and still ongoing host–pathogen arms race and that the maintenance of susceptibility alleles for autoimmune diseases at IFI16 represents an evolutionary trade-off.
    Digitale ISSN: 1759-6653
    Thema: Biologie
    Publiziert von Oxford University Press
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    Publikationsdatum: 2008-03-29
    Beschreibung: Schizophrenia is a devastating neurodevelopmental disorder whose genetic influences remain elusive. We hypothesize that individually rare structural variants contribute to the illness. Microdeletions and microduplications 〉100 kilobases were identified by microarray comparative genomic hybridization of genomic DNA from 150 individuals with schizophrenia and 268 ancestry-matched controls. All variants were validated by high-resolution platforms. Novel deletions and duplications of genes were present in 5% of controls versus 15% of cases and 20% of young-onset cases, both highly significant differences. The association was independently replicated in patients with childhood-onset schizophrenia as compared with their parents. Mutations in cases disrupted genes disproportionately from signaling networks controlling neurodevelopment, including neuregulin and glutamate pathways. These results suggest that multiple, individually rare mutations altering genes in neurodevelopmental pathways contribute to schizophrenia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Walsh, Tom -- McClellan, Jon M -- McCarthy, Shane E -- Addington, Anjene M -- Pierce, Sarah B -- Cooper, Greg M -- Nord, Alex S -- Kusenda, Mary -- Malhotra, Dheeraj -- Bhandari, Abhishek -- Stray, Sunday M -- Rippey, Caitlin F -- Roccanova, Patricia -- Makarov, Vlad -- Lakshmi, B -- Findling, Robert L -- Sikich, Linmarie -- Stromberg, Thomas -- Merriman, Barry -- Gogtay, Nitin -- Butler, Philip -- Eckstrand, Kristen -- Noory, Laila -- Gochman, Peter -- Long, Robert -- Chen, Zugen -- Davis, Sean -- Baker, Carl -- Eichler, Evan E -- Meltzer, Paul S -- Nelson, Stanley F -- Singleton, Andrew B -- Lee, Ming K -- Rapoport, Judith L -- King, Mary-Claire -- Sebat, Jonathan -- HD043569/HD/NICHD NIH HHS/ -- M01 RR000046/RR/NCRR NIH HHS/ -- MH061355/MH/NIMH NIH HHS/ -- MH061464/MH/NIMH NIH HHS/ -- MH061528/MH/NIMH NIH HHS/ -- NS052108/NS/NINDS NIH HHS/ -- R01 HD043569/HD/NICHD NIH HHS/ -- RR000046/RR/NCRR NIH HHS/ -- RR025014/RR/NCRR NIH HHS/ -- U01 MH061355/MH/NIMH NIH HHS/ -- U01 MH061464/MH/NIMH NIH HHS/ -- U01 MH061528/MH/NIMH NIH HHS/ -- U24 NS052108/NS/NINDS NIH HHS/ -- UL1 RR025014/RR/NCRR NIH HHS/ -- Howard Hughes Medical Institute/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2008 Apr 25;320(5875):539-43. doi: 10.1126/science.1155174. Epub 2008 Mar 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of Washington, Seattle, WA 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18369103" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adolescent ; Adult ; Age of Onset ; Amino Acid Sequence ; Brain/cytology/*growth & development/metabolism ; Case-Control Studies ; Child ; Excitatory Amino Acid Transporter 1/chemistry/genetics/physiology ; Female ; *Gene Deletion ; *Gene Duplication ; Genetic Predisposition to Disease ; Genome, Human ; Humans ; Male ; Molecular Sequence Data ; *Mutation ; Neurons/cytology/physiology ; Oligonucleotide Array Sequence Analysis ; Polymorphism, Single Nucleotide ; Receptor, Epidermal Growth Factor/chemistry/genetics/physiology ; Receptor, ErbB-4 ; Schizophrenia/*genetics/physiopathology ; Signal Transduction
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Publikationsdatum: 2016-05-20
    Beschreibung: We report results of studies relating to the fabrication of a flexible, disposable, and label free biosensing platform for detection of the cancer biomarker (carcinoembryonic antigen, CEA). Polyaniline (PANI) has been electrochemically deposited over gold sputtered paper (Au@paper) for covalent immobilization of monoclonal carcinoembryonic antibodies (anti-CEA). The bovine serum albumin (BSA) has been used for blocking nonspecific binding sites at the anti-CEA conjugated PANI/Au@Paper. The PANI/Au@Paper, anti-CEA/PANI/Au@Paper, and BSA/anti-CEA/PANI/Au@Paper platforms have been characterized using scanning electron microscopy, X-ray diffraction, Fourier transmission infrared spectroscopy, chronoamperometry, and electrochemical impedance techniques. The results of the electrochemical response studies indicate that this BSA/anti-CEA/PANI/Au@paper electrode has sensitivity of 13.9  μ A ng −1 ml cm 2 , shelf life of 22 days, and can be used to estimate CEA in the range of 2–20 ng ml −1 . This paper sensor has been validated by detection of CEA in serum samples of cancer patients via immunoassay technique.
    Print ISSN: 0003-6951
    Digitale ISSN: 1077-3118
    Thema: Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
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    Nature Publishing Group (NPG)
    Publikationsdatum: 2012-05-19
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Malhotra, Dheeraj -- Sebat, Jonathan -- England -- Nature. 2012 May 16;485(7398):318-9. doi: 10.1038/485318a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22596152" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Chromosomes, Human, Pair 16/*genetics ; DNA Copy Number Variations/*genetics ; Gene Dosage/*genetics ; Head/*abnormalities ; Humans ; Microcephaly/*genetics ; Nuclear Proteins/*genetics ; *Phenotype
    Print ISSN: 0028-0836
    Digitale ISSN: 1476-4687
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
    Publikationsdatum: 2011-02-25
    Beschreibung: Rare copy number variants (CNVs) have a prominent role in the aetiology of schizophrenia and other neuropsychiatric disorders. Substantial risk for schizophrenia is conferred by large (〉500-kilobase) CNVs at several loci, including microdeletions at 1q21.1 (ref. 2), 3q29 (ref. 3), 15q13.3 (ref. 2) and 22q11.2 (ref. 4) and microduplication at 16p11.2 (ref. 5). However, these CNVs collectively account for a small fraction (2-4%) of cases, and the relevant genes and neurobiological mechanisms are not well understood. Here we performed a large two-stage genome-wide scan of rare CNVs and report the significant association of copy number gains at chromosome 7q36.3 with schizophrenia. Microduplications with variable breakpoints occurred within a 362-kilobase region and were detected in 29 of 8,290 (0.35%) patients versus 2 of 7,431 (0.03%) controls in the combined sample. All duplications overlapped or were located within 89 kilobases upstream of the vasoactive intestinal peptide receptor gene VIPR2. VIPR2 transcription and cyclic-AMP signalling were significantly increased in cultured lymphocytes from patients with microduplications of 7q36.3. These findings implicate altered vasoactive intestinal peptide signalling in the pathogenesis of schizophrenia and indicate the VPAC2 receptor as a potential target for the development of new antipsychotic drugs.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3351382/" 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/PMC3351382/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vacic, Vladimir -- McCarthy, Shane -- Malhotra, Dheeraj -- Murray, Fiona -- Chou, Hsun-Hua -- Peoples, Aine -- Makarov, Vladimir -- Yoon, Seungtai -- Bhandari, Abhishek -- Corominas, Roser -- Iakoucheva, Lilia M -- Krastoshevsky, Olga -- Krause, Verena -- Larach-Walters, Veronica -- Welsh, David K -- Craig, David -- Kelsoe, John R -- Gershon, Elliot S -- Leal, Suzanne M -- Dell Aquila, Marie -- Morris, Derek W -- Gill, Michael -- Corvin, Aiden -- Insel, Paul A -- McClellan, Jon -- King, Mary-Claire -- Karayiorgou, Maria -- Levy, Deborah L -- DeLisi, Lynn E -- Sebat, Jonathan -- 072894/Z/03/Z/Wellcome Trust/United Kingdom -- GM66232/GM/NIGMS NIH HHS/ -- HG04222/HG/NHGRI NIH HHS/ -- MH044245/MH/NIMH NIH HHS/ -- MH061399/MH/NIMH NIH HHS/ -- MH071523/MH/NIMH NIH HHS/ -- MH076431/MH/NIMH NIH HHS/ -- MH082945/MH/NIMH NIH HHS/ -- MH083989/MH/NIMH NIH HHS/ -- P41 HG004222/HG/NHGRI NIH HHS/ -- P41 HG004222-04S1/HG/NHGRI NIH HHS/ -- P41 HG004222-04S2/HG/NHGRI NIH HHS/ -- R00 HL091061/HL/NHLBI NIH HHS/ -- R01 MH061399/MH/NIMH NIH HHS/ -- R01 MH076431/MH/NIMH NIH HHS/ -- R01 MH076431-06/MH/NIMH NIH HHS/ -- R01 MH082945/MH/NIMH NIH HHS/ -- R01 MH091350/MH/NIMH NIH HHS/ -- England -- Nature. 2011 Mar 24;471(7339):499-503. doi: 10.1038/nature09884. Epub 2011 Feb 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Stanley Institute for Cognitive Genomics, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 12824, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21346763" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Cell Line ; Chromosomes, Human, Pair 7/genetics ; Cohort Studies ; Cyclic AMP/metabolism ; DNA Copy Number Variations/*genetics ; Female ; Gene Dosage/genetics ; Genes, Duplicate/*genetics ; Genetic Predisposition to Disease/*genetics ; Genome-Wide Association Study ; Humans ; Inheritance Patterns/genetics ; Male ; Pedigree ; Receptors, Vasoactive Intestinal Peptide, Type II/*genetics/metabolism ; Reproducibility of Results ; Schizophrenia/*genetics/metabolism ; Signal Transduction ; Transcription, Genetic/genetics
    Print ISSN: 0028-0836
    Digitale ISSN: 1476-4687
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
    Publikationsdatum: 2007-03-17
    Beschreibung: We tested the hypothesis that de novo copy number variation (CNV) is associated with autism spectrum disorders (ASDs). We performed comparative genomic hybridization (CGH) on the genomic DNA of patients and unaffected subjects to detect copy number variants not present in their respective parents. Candidate genomic regions were validated by higher-resolution CGH, paternity testing, cytogenetics, fluorescence in situ hybridization, and microsatellite genotyping. Confirmed de novo CNVs were significantly associated with autism (P = 0.0005). Such CNVs were identified in 12 out of 118 (10%) of patients with sporadic autism, in 2 out of 77 (3%) of patients with an affected first-degree relative, and in 2 out of 196 (1%) of controls. Most de novo CNVs were smaller than microscopic resolution. Affected genomic regions were highly heterogeneous and included mutations of single genes. These findings establish de novo germline mutation as a more significant risk factor for ASD than previously recognized.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2993504/" 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/PMC2993504/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sebat, Jonathan -- Lakshmi, B -- Malhotra, Dheeraj -- Troge, Jennifer -- Lese-Martin, Christa -- Walsh, Tom -- Yamrom, Boris -- Yoon, Seungtai -- Krasnitz, Alex -- Kendall, Jude -- Leotta, Anthony -- Pai, Deepa -- Zhang, Ray -- Lee, Yoon-Ha -- Hicks, James -- Spence, Sarah J -- Lee, Annette T -- Puura, Kaija -- Lehtimaki, Terho -- Ledbetter, David -- Gregersen, Peter K -- Bregman, Joel -- Sutcliffe, James S -- Jobanputra, Vaidehi -- Chung, Wendy -- Warburton, Dorothy -- King, Mary-Claire -- Skuse, David -- Geschwind, Daniel H -- Gilliam, T Conrad -- Ye, Kenny -- Wigler, Michael -- MH076431/MH/NIMH NIH HHS/ -- MH61009/MH/NIMH NIH HHS/ -- MH64547/MH/NIMH NIH HHS/ -- R01 MH076431/MH/NIMH NIH HHS/ -- R01 MH076431-01/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2007 Apr 20;316(5823):445-9. Epub 2007 Mar 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY 11724, USA. sebat@cshl.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17363630" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Asperger Syndrome/genetics ; Autistic Disorder/*genetics ; Case-Control Studies ; Child ; Cytogenetic Analysis ; Female ; Gene Deletion ; *Gene Dosage ; Gene Duplication ; Genetic Predisposition to Disease ; *Genome, Human ; Germ-Line Mutation ; Humans ; In Situ Hybridization, Fluorescence ; Male ; Markov Chains ; Microsatellite Repeats ; *Mutation ; Nucleic Acid Hybridization ; Oligonucleotide Array Sequence Analysis ; Parents ; Siblings
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
    Publikationsdatum: 2013-04-03
    Beschreibung: Malaria parasites use hemoglobin (Hb) as a major nutrient source in the intraerythrocytic stage, during which heme is converted to hemozoin (Hz). The formation of Hz is essential for parasite survival, but to date, the underlying mechanisms of Hb degradation and Hz formation are poorly understood. We report the presence...
    Print ISSN: 0027-8424
    Digitale ISSN: 1091-6490
    Thema: Biologie , Medizin , Allgemeine Naturwissenschaft
    Standort Signatur Erwartet Verfügbarkeit
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