Results 41 to 50 of about 26,400 (209)

A study of the association of HLA DR, DQ, and complement C4 alleles with systemic lupus erythematosus in Iceland [PDF]

open access: yes, 2009
To access publisher full text version of this article. Please click on the hyperlink in Additional Links fieldOBJECTIVE: To perform an exploratory analysis of the relative contribution of single MHC genes to the pathogenesis of systemic lupus ...
Arason, G J   +6 more
core   +1 more source

Expanding the palette of phenanthridinium cations [PDF]

open access: yes, 2014
5,6-Disubstituted phenanthridinium cations have a range of redox, fluorescence and biological properties. Some properties rely on phenanthridiniums intercalating into DNA, but the use of these cations as exomarkers for the reactive oxygen species (ROS ...
Acevedo   +114 more
core   +4 more sources

Role of intramolecular hydrogen bonding in the excited-state intramolecular double proton transfer (ESIDPT) of calix[4]arene: A TDDFT study

open access: yesOpen Physics, 2016
The time-dependent density functional theory (TDDFT) method was performed to investigate the excited-state intramolecular double proton transfer (ESIDPT) reaction of calix[4]arene (C4A) and the role of the intramolecular hydrogen bonds in the ESIDPT ...
Wang Se, Wang Zhuang, Hao Ce
doaj   +1 more source

C4a: An Anaphylatoxin in Name Only [PDF]

open access: yesJournal of Innate Immunity, 2015
Activation of complement leads to generation of the 3 anaphylatoxins C3a, C4a, and C5a. Although all 3 peptides are structurally similar, only C3a and C5a share a similar functional profile that includes the classic inflammatory activities and, more recently, developmental homing and regenerative properties among others.
openaire   +2 more sources

Associação do alótipo raro C4A6 do sistema complemento com a doença cardíaca reumática Association of the C4A6 rare allotype with rheumatic heart disease

open access: yesRevista Brasileira de Reumatologia, 2004
OBJETIVO: determinar se os alótipos do Fator B (BF), C2 e C4 (C4A e C4B) do sistema complemento poderiam ser marcadores para a doença cardíaca reumática (DCR) na população brasileira. MÉTODOS: foram estudados 49 pacientes com DCR crônica.
Iara Jose de Messias-Reason   +2 more
doaj   +1 more source

Cone‐beam computed tomography evaluation of C-shaped root and canal morphology of mandibular premolars

open access: yesBMC Oral Health, 2021
Background Mandibular premolars are complicated teeth to endodontically treat due to the anatomical variations that can present. The purpose of this study was to determine the presence of C-shaped configurations in mandibular premolars by cone-beam ...
Gisbeli Brea   +2 more
doaj   +1 more source

Cerebrospinal fluid concentration of complement component 4A is increased in first episode schizophrenia

open access: yesNature Communications, 2022
Schizophrenia risk has been associated with the complement component 4 (C4) genes. Here the authors show that C4A is elevated in individuals with schizophrenia.
Jessica Gracias   +31 more
doaj   +1 more source

Perturbative Finite-Temperature Results and Pad'e Approximants [PDF]

open access: yes, 1997
Pad'e approximants are used to improve the convergence behavior of perturbative results in massless scalar and gauge field theories at finite temperature.Comment: 11 pages, LaTeX, incl.
Kastening, Boris
core   +2 more sources

Four-loop QCD $\beta$-function with different fermion representations of the gauge group [PDF]

open access: yes, 2016
We present analytical results at four-loop level for the $\beta$-function of the coupling of a generic gauge group and any number of different quark representations.
Zoller, M. F.
core   +3 more sources

Characterization of human C4a anaphylatoxin.

open access: yesJournal of Biological Chemistry, 1981
Human C4a anaphylatoxin was isolated from a Cls digest of the fourth component of complement. Isolation required a two-step procedure involving ion-exchange chromatography on CM-Sephadex C-50 and gel filtration on Sephadex G-50. Characterization of C4a indicated it is a highly cationic polypeptide (pI = 9.0-9.5) containing 77 residues with Mr = 8,759 ...
J P, Gorski   +2 more
openaire   +2 more sources

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