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https://www.readbyqxmd.com/read/27921406/house-dust-mites-confer-a-distinct-immunological-feature-among-dermatitis
#1
Safa Baris, Ahmet Ozen, Tuba Akdeniz, Elif Karakoc-Aydiner, Ovgu Aydin, Hulya Ercan, Ismail Ogulur, Yildiz Camcioglu, Reha Cengizlier, Cuyan Demirkesen, Deniz Yucelten, Gulderen Demirel, Isil B Barlan
Atopic dermatitis (AD) is a heterogeneous disease with regard to clinical phenotype and natural history. We investigated T cell subtypes and cytokine responses in peripheral blood and skin lesions of AD patients with various sensitivities. Immunological studies were performed in 27 subjects: 9 house dust mite (HDM)-sensitized; 6 subjects with sensitizations other than HDM; 7 non-allergic AD patients and 5 healthy controls. Among those, skin biopsy samples of 13 subjects were evaluated for immunohistochemical analyses, as well...
August 2016: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/27906374/highly-bright-photon-pair-generation-in-doppler-broadened-ladder-type-atomic-system
#2
Yoon-Seok Lee, Sang Min Lee, Heonoh Kim, Han Seb Moon
We report a bright photon-pair source with a coincidence counting rate per input power (cps/mW) of tens of thousands, obtained via spontaneous four-wave mixing from a Doppler-broadened atomic ensemble of the 5S<sub>1/2</sub>-5P<sub>3/2</sub>-5D<sub>5/2</sub> transition of <sup>87</sup>Rb. The photon-pair generation rate is enhanced by the two-photon coherence contributions from almost all the atomic velocity groups in the Doppler-broadened ladder-type atomic system...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27902380/antimicrobial-resistance-profiling-and-molecular-typing-of-methicillin-resistant-staphylococcus-aureus-mrsa-isolated-from-a-malaysian-teaching-hospital
#3
Ainihayati Noordin, Hassriana Fazzila Sapri, Nurul Azirah Mohamad Sani, Shih Kei Leong, Xin-Ee Tan, Toh Leong Tan, Noraziah Mohamad Zin, Hui-Min Neoh, Salasawati Hussin
The annual prevalence of methicillin-resistant Staphylococcus aureus (MRSA) in Malaysia has been estimated to be at 30-40% of all S. aureus infections. Nevertheless, data on the antimicrobial resistance and genetic diversity of Malaysian MRSAs remain few. In 2009, we collected 318 MRSA strains from various wards of our teaching hospital located in Kuala Lumpur, the capital city of Malaysia, and performed antimicrobial susceptibility testing on the strains. The strains were then molecularly characterized via SCCmec and virulence gene (cna, sea, seb, sec, sed, see, seg, seh, sei, eta, etb, PVL and TSST-1) typing; a subset of 49 strains isolated from the Intensive Care Unit (ICU) were also typed using Pulsed-Field Gel Electrophoresis (PFGE)...
November 7, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27862492/self-perceived-health-status-and-sleep-quality-of-older-adults-living-in-community-after-elastic-band-exercises
#4
Shu-Ya Chan, Kuei-Min Chen
AIMS: To test the effectiveness of a 6-month Senior Elastic Band (SEB) exercise program on the self-perceived health status and sleep quality of older adults living in community settings. BACKGROUND: Health issues common among older adults living in community settings include poor physical and mental health conditions and sleep quality. Engagement in appropriate exercise programs facilitates alleviating these health issues among older adults. DESIGN: A quasi-experimental design was applied...
November 9, 2016: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/27861999/forkhead-box-protein-3-foxp3-producing-dendritic-cells-suppress-allergic-response
#5
Xiao-Yu Liu, Ling-Zhi Xu, Xiang-Qian Luo, Xiao-Rui Geng, Zhi-Qiang Liu, Li-Teng Yang, Gui Yang, Si Chen, Zhi-Gang Liu, Hua-Bin Li, Li-Tao Yang, Tian-Gang Luan, Ping-Chang Yang
BACKGROUND: The generation of the tolerogenic dendritic cells (DC) is not fully understood yet. Forkhead box protein-3 (Foxp3) is an important molecule in the immune tolerance. This study tests a hypothesis that DCs express Foxp3, which can be up regulated by Staphylococcal enterotoxin B (SEB). METHODS: The expression of Foxp3 by DCs was evaluated by real time RT-PCR, Western blotting, flow cytometry and chromatin immunoprecipitation assay. RESULTS: We observed that mice treated with SEB at 0...
November 15, 2016: Allergy
https://www.readbyqxmd.com/read/27843530/effects-of-poor-hygiene-on-cytokine-phenotypes-in-children-in-the-tropics
#6
C A Figueiredo, L D Amorim, M Vaca, M E Chico, A C Campos, M L Barreto, P J Cooper
We describe immune phenotypes (innate and adaptive cytokines) according to environmental exposure using latent class analysis. A total of 310 schoolchildren living in Ecuador were assayed for spontaneous cytokine production as well as mitogen (SEB)-stimulated cytokines in whole blood cultures. We collected data on environmental exposures by questionnaire and on intestinal parasites by examination of stool samples. Latent class analysis (LCA) was used to group children according to their innate (IL-6, IL-8, IL-10 and TNF-α) and adaptive (IL-5, IL-13, IL-17, IFN-γ and IL-10) cytokine profile...
2016: World Allergy Organization Journal
https://www.readbyqxmd.com/read/27835615/modulation-of-innate-and-adaptive-cellular-immunity-relevant-to-hiv-1-vaccine-design-by-seminal-plasma
#7
Kevin J Selva, Stephen J Kent, Matthew S Parsons
OBJECTIVES: Mucosal exposure to HIV-1 infection generally occurs in the presence of semen. Immunomodulation by seminal plasma (SP) is well described in the reproductive biology literature. Little is known, however, about the impact of SP on innate and adaptive anti-HIV-1 cellular immunity. DESIGN: This study investigated the effects of SP on immune responses considered important for prophylactic HIV-1 vaccine development, namely innate and adaptive cellular immunity mediated by NK cells and T-cells, respectively...
November 9, 2016: AIDS
https://www.readbyqxmd.com/read/27828239/dsp-algorithms-for-recovering-single-carrier-alamouti-coded-signals-for-pon-applications
#8
Md Saifuddin Faruk, Hadrien Louchet, M Sezer Erkılınç, Seb J Savory
Alamouti space-time block code (STBC) combined with a simple heterodyne coherent receiver enables phase diverse coherent detection without any optical polarization tracking. While such a system consisting of only a 3-dB coupler and a single balanced photodiode has been recently demonstrated using orthogonal frequency-division multiplexed (OFDM) signals, herein we report the first application to single-carrier systems. Applicability of such technique for single-carrier systems is not straightforward since specialized digital signal processing (DSP) algorithms are required for data recovery...
October 17, 2016: Optics Express
https://www.readbyqxmd.com/read/27812635/staphylococcal-superantigen-specific-ige-antibodies-degree-of-sensitization-and-association-with-severity-of-asthma
#9
José Elabras, Fernanda Carvalho de Queiroz Mello, Omar Lupi, Blanca Elena Rios Gomes Bica, José Angelo de Souza Papi, Alfeu Tavares França
Objective: To determine the presence of staphylococcal superantigen-specific IgE antibodies and degree of IgE-mediated sensitization, as well as whether or not those are associated with the severity of asthma in adult patients. Methods: This was a cross-sectional study involving outpatients with asthma under treatment at a tertiary care university hospital in the city of Rio de Janeiro, Brazil. Consecutive patients were divided into two groups according to the severity of asthma based on the Global Initiative for Asthma criteria: mild asthma (MA), comprising patients with mild intermittent or persistent asthma; and moderate or severe asthma (MSA)...
September 2016: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/27801832/enterotoxin-gene-cluster-encoded-sei-and-seln-from-staphylococcus-aureus-isolates-are-crucial-for-the-induction-of-human-blood-cell-proliferation-and-pathogenicity-in-rabbits
#10
Andreas Roetzer, Corina S Gruener, Guenter Haller, John Beyerly, Nina Model, Martha M Eibl
Among the toxin family of bacterial superantigens, the six members of the enterotoxin gene cluster (egc) seem to have unusual characteristics. They are present in the majority of Staphylococcus aureus strains, but their role in disease remains uncertain. We assessed secretion levels, immunogenicity, and toxicity of native and recombinant egc proteins. After having developed enzyme-linked immunosorbent assays, we found different quantities of egc proteins secreted by bacterial isolates. Supernatants induced proliferation of human peripheral blood mononuclear cells...
October 28, 2016: Toxins
https://www.readbyqxmd.com/read/27782068/the-anti-inflammatory-effect-of-spray-dried-plasma-is-mediated-by-a-reduction-in-mucosal-lymphocyte-activation-and-infiltration-in-a-mouse-model-of-intestinal-inflammation
#11
Anna Pérez-Bosque, Lluïsa Miró, Concepció Amat, Javier Polo, Miquel Moretó
Spray-dried preparations from porcine and bovine plasma can alleviate mucosal inflammation in experimental models and improve symptoms in patients with enteropathy. In rodents, dietary supplementation with porcine spray-dried plasma (SDP) attenuates intestinal inflammation and improves the epithelial barrier function during intestinal inflammation induced by Staphylococcus aureus enterotoxin B (SEB). The aim of this study was to discern the molecular mechanisms involved in the anti-inflammatory effects of SDP...
October 22, 2016: Nutrients
https://www.readbyqxmd.com/read/27776247/delay-discounting-in-opioid-use-disorder-differences-between-heroin-and-prescription-opioid-users
#12
Sterling L Karakula, Roger D Weiss, Margaret L Griffin, Allison M Borges, Allen J Bailey, R Kathryn McHugh
BACKGROUND: Among those with opioid use disorder, heroin use is associated with poorer prognosis relative to use of prescription opioids alone. However, relatively little is known about distinguishing features between those who use heroin relative to those who use prescription opioids. In the present study we evaluated differences in delay discounting in those with opioid use disorder based on primary opioid of use. Delay discounting is associated with a range of negative outcomes and is an important therapeutic target in this population...
December 1, 2016: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/27770294/do-child-healthcare-professionals-and-parents-recognize-social-emotional-and-behavioral-problems-in-1-year-old-infants
#13
Jaana Alakortes, Susanna Kovaniemi, Alice S Carter, Risto Bloigu, Irma K Moilanen, Hanna E Ebeling
Growing evidence supports the existence of clinically significant social-emotional/behavioral (SEB) problems among as young as 1-year-old infants. However, a substantial proportion of early SEB problems remain unidentified during contacts with child healthcare professionals. In this study, child healthcare nurse (CHCN; N = 1008) and parental (N = 518) reports about SEB worries were gathered, along with the maternal and paternal Brief Infant-Toddler Social and Emotional Assessment (BITSEA) ratings, for 12-month-old infants randomly recruited through Finnish child health centers...
October 21, 2016: European Child & Adolescent Psychiatry
https://www.readbyqxmd.com/read/27767230/a-school-based-program-for-tobacco-and-alcohol-prevention-in-special-education-effectiveness-of-the-modified-healthy-school-and-drugs-intervention-and-moderation-by-school-subtype
#14
Abdullah Turhan, Simone Onrust, Peter Ten Klooster, Marcel Pieterse
AIMS: To test effectiveness of the Healthy School and Drugs (HSD) program on tobacco and alcohol use in Dutch secondary special education (SE) schools, and whether this depends on subtypes of SE-schools and the level of implementation. DESIGN: In a quasi-experimental design with baseline and post-treatment follow-up 35 classes (N = 363) were allocated arbitrarily or depending on teacher motivation to either intervention condition (N = 205) or usual curriculum (N = 158)...
October 21, 2016: Addiction
https://www.readbyqxmd.com/read/27715466/monoclonal-antibodies-protect-from-staphylococcal-enterotoxin-k-sek-induced-toxic-shock-and-sepsis-by-usa300-staphylococcus-aureus
#15
Jorge L Aguilar, Avanish K Varshney, Ximo Pechuan, Kaushik Dutta, Joshua D Nosanchuk, Bettina C Fries
Staphylococcus aureus is a leading infectious cause of life-threatening disease in humans, yet there is currently no vaccine to combat this bacterium. The pathogenesis of S. aureus is mediated by a diverse array of protein toxins including a large family of secreted pyrogenic superantigens. Neutralization of superantigens, including SEB and TSST-1, has proven to be protective in several animal models of toxic shock and sepsis. We demonstrate, for the first time, that a far more prevalent staphylococcal superantigen, SEK, can also induce lethal shock in mice...
October 7, 2016: Virulence
https://www.readbyqxmd.com/read/27715428/highlight-on-the-dynamic-organisation-of-the-nucleus
#16
Stephen D Thorpe, Myriam Charpentier
The last decade has seen rapid advances in our understanding of the proteins of the nuclear envelope, which have multiple roles including positioning the nucleus, maintaining its structural organisation, and in events ranging from mitosis and meiosis to chromatin positioning and gene expression. Diverse new and stimulating results relating to nuclear organisation and genome function from across kingdoms were presented in a session stream entitled "Dynamic Organisation of the Nucleus" at this year's Society of Experimental Biology (SEB) meeting in Brighton, UK (July 2016)...
October 7, 2016: Nucleus
https://www.readbyqxmd.com/read/27709104/positive-feedback-cycle-of-tnf%C3%AE-promotes-staphylococcal-enterotoxin-b-induced-thp-1-cell-apoptosis
#17
Xiaopeng Zhang, Weilong Shang, Jizhen Yuan, Zhen Hu, Huagang Peng, Junmin Zhu, Qiwen Hu, Yi Yang, Hui Liu, Bei Jiang, Yinan Wang, Shu Li, Xiaomei Hu, Xiancai Rao
Staphylococcal enterotoxin B (SEB) has been demonstrated to be of importance in Staphylococcus aureus related diseases, such as atopic dermatitis (AD). Dysregulated apoptosis in AD is remarkable, and SEB can induce apoptosis of various cell types. However, the mechanisms by which SEB induces apoptosis and influences disease processes remain unclear. In this study, the recombinant SEB-induced THP-1 monocyte apoptosis was demonstrated in the absence of preliminary cell activation in a time- and dose-dependent manner...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27708380/two-photon-interference-of-temporally-separated-photons
#18
Heonoh Kim, Sang Min Lee, Han Seb Moon
We present experimental demonstrations of two-photon interference involving temporally separated photons within two types of interferometers: a Mach-Zehnder interferometer and a polarization-based Michelson interferometer. The two-photon states are probabilistically prepared in a symmetrically superposed state within the two interferometer arms by introducing a large time delay between two input photons; this state is composed of two temporally separated photons, which are in two different or the same spatial modes...
October 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27707765/safety-and-immunogenicity-of-a-parenterally-administered-structure-based-rationally-modified-recombinant-staphylococcal-enterotoxin-b-protein-vaccine-stebvax
#19
Wilbur H Chen, Marcela F Pasetti, Rajan P Adhikari, Holly Baughman, Robin Douglas, Jill El-Khorazaty, Nancy Greenberg, Frederick W Holtsberg, Grant C Liao, Mardi K Reymann, Xiaolin Wang, Kelly L Warfield, M Javad Aman
Staphylococcus aureus produces several enterotoxins and superantigens, exposure to which can elicit profound toxic shock. A recombinant staphylococcal enterotoxin B (rSEB) containing 3 distinct mutations in the major histocompatibility complex class II binding site was combined with an alum adjuvant (Alhydrogel) and used as a potential parenteral vaccine named STEBVax. Consenting healthy adult volunteers (age range, 23 to 38 years) participated in a first-in-human open-label dose escalation study of parenteral doses of STEBVax ranging from 0...
December 2016: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/27694813/characterization-of-toxin-genes-and-antimicrobial-susceptibility-of-staphylococcus-aureus-isolates-in-fishery-products-in-iran
#20
Noushin Arfatahery, Abolfazl Davoodabadi, Taranehpeimaneh Abedimohtasab
Staphylococcus aureus is one of the most common causes of seafood-borne diseases worldwide, which are attributable to the contamination of food by preformed enterotoxins. In this study, a total of 206 (34.3%) Staphylococcus aureus strains were obtained from 600 fish and shrimp samples and were tested for their antimicrobial susceptibility. We assessed the prevalence of the genes responsible for the staphylococcal enterotoxins (SEA, SEB) and toxic shock syndrome toxin 1 (TSST-1) genes. The results indicated that 34% of aqua food samples were contaminated with S...
October 3, 2016: Scientific Reports
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