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https://www.readbyqxmd.com/read/28822227/inborn-errors-of-metabolism-in-a-cohort-of-pregnancies-with-non-immune-hydrops-fetalis-a-single-center-experience
#1
Zandrè Bruwer, Nihal Al Riyami, Tamima Al Dughaishi, Fathiya Al Murshedi, Abeer Al Sayegh, Adila Al Kindy, Douja Meftah, Khalsa Al Kharusi, Amel Al Foori, Naeema Al Yarubi, Patrick Scott, Khalid Al-Thihli
OBJECTIVE: The purpose of this study was to determine the frequency of non-immune hydrops fetalis (NIHF) among all pregnancies referred for prenatal care at Sultan Qaboos University Hospital (SQUH) during the study period and to evaluate the underlying etiologies of NIH. STUDY DESIGN: All pregnancies referred to SQUH between February 2014 and December 2015 were identified, and all pregnancies meeting the diagnosis of NIHF were included in this study. All cases of NIHF referred to our center during this period underwent standard systematic diagnostic work-up that included biochemical and molecular studies in addition to the standard investigations for hydrops fetalis...
August 19, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28821806/longitudinal-study-of-changes-in-%C3%AE-%C3%AE-t-cells-and-cd4-t-cells-upon-asymptomatic-malaria-infection-in-indonesian-children
#2
Sanne E de Jong, Vera E R Asscher, Linda J Wammes, Aprilianto E Wiria, Firdaus Hamid, Erliyani Sartono, Taniawati Supali, Hermelijn H Smits, Adrian J F Luty, Maria Yazdanbakhsh
Both γδ T cells and CD4(+) T cells have been implicated in immunity to malaria, but their association with natural gain or loss of infection has not been studied before. Therefore, we followed up asymptomatic children living in an area endemic for malaria in Indonesia for 21 months. The percentage of γδ T cells was related to both current and previous infection, with higher percentages in infected than uninfected children and declining after infections resolve. Infected children also had higher levels of Th1 and Th17 cells, lower levels of CD25(Hi) FOXP3(+) regulatory T cells (Tregs), but similar levels of Th2 cells as compared to uninfected children...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28820897/persistent-infection-due-to-a-small-colony-variant-of-burkholderia-pseudomallei-leads-to-pd-1-upregulation-on-circulating-immune-cells-and-mononuclear-infiltration-in-viscera-of-experimental-balb-c-mice
#3
Jia-Xiang See, Samudi Chandramathi, Mahmood Ameen Abdulla, Jamuna Vadivelu, Esaki M Shankar
BACKGROUND: Melioidosis is a neglected tropical disease endemic across South East Asia and Northern Australia. The etiological agent, Burkholderia pseudomallei (B.pseudomallei), is a Gram-negative, rod-shaped, motile bacterium residing in the soil and muddy water across endemic regions of the tropical world. The bacterium is known to cause persistent infections by remaining latent within host cells for prolonged duration. Reactivation of the recrudescent disease often occurs in elders whose immunity wanes...
August 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28820075/t-regulatory-cell-subsets-in-children-with-type-1-diabetes-mellitus-relation-to-control-of-the-disease
#4
Mabrouk Ghonaim, Rawhia El-Edel, Wafaa Abo El Fotoh, Samar Kamal Eldein, Samar Salman
BACKGROUND: Type 1 diabetes mellitus described as a chronic metabolic disorder characterized by aggressive immune β-cell destruction. There are numbers of varied immune mechanisms for sustaining self-tolerance in opposition to the autoimmune disorders. A recessive tolerance accomplished by thymic gland via a negative assortment of different clones while a dominant tolerance accomplished by the regulatory T cells (Treg) in the periphery. Treg (CD4+CD25+FOXP3+) are subsets of T cells which have an essential role in maintaining tolerance...
August 17, 2017: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/28819565/genomic-and-immune-heterogeneity-are-associated-with-differential-responses-to-therapy-in-melanoma
#5
Alexandre Reuben, Christine N Spencer, Peter A Prieto, Vancheswaran Gopalakrishnan, Sangeetha M Reddy, John P Miller, Xizeng Mao, Mariana Petaccia De Macedo, Jiong Chen, Xingzhi Song, Hong Jiang, Pei-Ling Chen, Hannah C Beird, Haven R Garber, Whijae Roh, Khalida Wani, Eveline Chen, Cara Haymaker, Marie-Andrée Forget, Latasha D Little, Curtis Gumbs, Rebecca L Thornton, Courtney W Hudgens, Wei-Shen Chen, Jacob Austin-Breneman, Robert Szczepaniak Sloane, Luigi Nezi, Alexandria P Cogdill, Chantale Bernatchez, Jason Roszik, Patrick Hwu, Scott E Woodman, Lynda Chin, Hussein Tawbi, Michael A Davies, Jeffrey E Gershenwald, Rodabe N Amaria, Isabella C Glitza, Adi Diab, Sapna P Patel, Jianhua Hu, Jeffrey E Lee, Elizabeth A Grimm, Michael T Tetzlaff, Alexander J Lazar, Ignacio I Wistuba, Karen Clise-Dwyer, Brett W Carter, Jianhua Zhang, P Andrew Futreal, Padmanee Sharma, James P Allison, Zachary A Cooper, Jennifer A Wargo
Appreciation for genomic and immune heterogeneity in cancer has grown though the relationship of these factors to treatment response has not been thoroughly elucidated. To better understand this, we studied a large cohort of melanoma patients treated with targeted therapy or immune checkpoint blockade (n = 60). Heterogeneity in therapeutic responses via radiologic assessment was observed in the majority of patients. Synchronous melanoma metastases were analyzed via deep genomic and immune profiling, and revealed substantial genomic and immune heterogeneity in all patients studied, with considerable diversity in T cell frequency, and few shared T cell clones (<8% on average) across the cohort...
2017: NPJ Genomic Medicine
https://www.readbyqxmd.com/read/28819022/%C3%AE-adrenergic-signaling-in-mice-housed-at-standard-temperatures-suppresses-an-effector-phenotype-in-cd8-t-cells-and-undermines-checkpoint-inhibitor-therapy
#6
Mark J Bucsek, Guanxi Qiao, Cameron R MacDonald, Thejaswini Giridharan, Lauren Evans, Brian Niedzwecki, Haichao Liu, Kathleen M Kokolus, Jason W-L Eng, Michelle N Messmer, Kristopher Attwood, Scott I Abrams, Bonnie L Hylander, Elizabeth A Repasky
The immune context of tumors has significant prognostic value and is predictive of responsiveness to several forms of therapy, including immunotherapy. We report here that CD8(+) T cell frequency and functional orientation within the tumor microenvironment is regulated by β2-adrenergic receptor (β-AR) signaling in host immune cells. We used three strategies - physiologic (manipulation of ambient thermal environment), pharmacologic (β-blockers), and genetic (β2-adrenergic receptor knockout mice) to reduce adrenergic stress signaling in two widely studied preclinical mouse tumor models...
August 17, 2017: Cancer Research
https://www.readbyqxmd.com/read/28818095/frequency-distribution-and-immunologic-nature-of-infusion-reactions-in-subjects-receiving-pegloticase-for-chronic-refractory-gout
#7
Leonard H Calabrese, Arthur Kavanaugh, Anthony E Yeo, Peter E Lipsky
BACKGROUND: To assess frequency and distribution of infusion reactions (IRs) in responders and nonresponders in randomized clinical trials (RCTs) of intravenous pegloticase and the utility of the National Institute of Allergy and Infectious Disease/Food and Allergy and Anaphylaxis Network (NIAID/FAAN) criteria for identifying anaphylaxis in subjects experiencing IRs. METHODS: IRs from two RCTs of pegloticase were evaluated and categorized as anaphylaxis, hypersensitivity, or other...
August 17, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28817653/perilymph-pharmacokinetics-of-marker-applied-through-a-cochlear-implant-in-guinea-pigs
#8
Alec Salt, Jared Hartsock, Ruth Gill, Daniel Smyth, Jonathon Kirk, Kristien Verhoeven
Patients undergoing cochlear implantation could benefit from a simultaneous application of drugs into the ear, helping preserve residual low-frequency hearing and afferent nerve fiber populations. One way to apply drugs is to incorporate a cannula into the implant, through which drug solution is driven. For such an approach, perilymph concentrations achieved and the distribution in the ear over time have not previously been documented. We used FITC-labeled dextran as a marker, delivering it into perilymph of guinea pigs at 10 or 100 nL/min though a cannula incorporated into a cochlear implant with the outlet in the mid basal turn...
2017: PloS One
https://www.readbyqxmd.com/read/28815890/a-semi-synthetic-glycoconjugate-vaccine-candidate-for-carbapenem-resistant-klebsiella-pneumoniae
#9
Peter H Seeberger, Claney L Pereira, Naeem Khan, Guozhi Xiao, Elizabeth Diago-Navarro, Katrin Reppe, Bastian Opitz, Bettina C Fries, Martin Witzenrath
Hospital acquired infections are an increasingly serious health concern. Infections caused by carpabenem-resistant Klebsiella pneumoniae (CR-Kp) are especially problematic, with a 50% average survival rate. CR-Kp are isolated from patients with ever greater frequency: 7% within the EU but 62% in Greece. At a time when antibiotics are becoming less effective, no vaccines to protect from this severe bacterial infection exist. Here, we describe the convergent [3+3] synthesis of the hexasaccharide repeating unit from its capsular polysaccharide and related sequences...
August 16, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28815581/th1-polarizing-%C3%AE-%C3%AE-t-cells-and-scavenger-receptors-contribute-to-the-pathogenesis-of-pemphigus-vulgaris
#10
Dayasagar Das, Vivek Anand, Sujay Khandpur, V K Sharma, Alpana Sharma
Gamma delta T cells (γδ T cells) and Scavenger receptors are key innate immune machinery playing significant role in regulating immune homeostasis at epithelial surface. The roles of these immune components are not yet characterized for the autoimmune skin disorder Pemphigus Vulgaris (PV). Phenotyping and frequency of γδ T cells estimated by Flowcytometry has shown increased frequency of γδ T cells (6.7% vs. 4.4%) producing IFN-γ (35.2% vs. 26.68%), in circulation of patients compared to controls. Dual cytokine (IFN-γ & IL-4) secreting γδ T cells indicate plasticity of these cells...
August 16, 2017: Immunology
https://www.readbyqxmd.com/read/28815218/capturing-the-systemic-immune-signature-of-a-norovirus-infection-an-n-of-1-case-study-within-a-clinical-trial
#11
Antony J Cutler, Joao Oliveira, Ricardo C Ferreira, Ben Challis, Neil M Walker, Sarah Caddy, Jia Lu, Helen E Stevens, Deborah J Smyth, Marcin L Pekalski, Jane Kennet, Kara M D Hunter, Ian Goodfellow, Linda S Wicker, John A Todd, Frank Waldron-Lynch
BACKGROUND:  The infection of a participant with norovirus during the adaptive study of interleukin-2 dose on regulatory T cells in type 1 diabetes (DILT1D) allowed a detailed insight into the cellular and cytokine immune responses to this prevalent gastrointestinal pathogen. METHODS:  Serial blood, serum and peripheral blood mononuclear cell (PBMC) samples were collected pre-, and post-development of the infection. To differentiate between the immune response to norovirus and to control for the administration of a single dose of aldesleukin (recombinant interleukin-2, rIL-2) alone, samples from five non-infected participants administered similar doses were analysed in parallel...
2017: Wellcome Open Research
https://www.readbyqxmd.com/read/28815043/the-mek-inhibitor-selumetinib-complements-ctla-4-blockade-by-reprogramming-the-tumor-immune-microenvironment
#12
Edmund Poon, Stefanie Mullins, Amanda Watkins, Geoffrey S Williams, Jens-Oliver Koopmann, Gianfranco Di Genova, Marie Cumberbatch, Margaret Veldman-Jones, Shaun E Grosskurth, Vasu Sah, Alwin Schuller, Corrine Reimer, Simon J Dovedi, Paul D Smith, Ross Stewart, Robert W Wilkinson
BACKGROUND: T-cell checkpoint blockade and MEK inhibitor combinations are under clinical investigation. Despite progress elucidating the immuno-modulatory effects of MEK inhibitors as standalone therapies, the impact of MEK inhibition on the activity of T-cell checkpoint inhibitors remains incompletely understood. Here we sought to characterize the combined effects of MEK inhibition and anti-CTLA-4 mAb (anti-CTLA-4) therapy, examining effects on both T-cells and tumor microenvironment (TME)...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28814603/single-nucleotide-polymorphisms-of-the-high-affinity-igg-receptor-fc%C3%AE-ri-reduce-immune-complex-binding-and-downstream-effector-functions
#13
Arianne M Brandsma, Toine Ten Broeke, Evelien van Dueren den Hollander, Thomas G Caniels, Tineke Kardol-Hoefnagel, Jürgen Kuball, Jeanette H W Leusen
Binding of IgG Abs to FcγRs on immune cells induces FcγR cross-linking that leads to cellular effector functions, such as phagocytosis, Ab-dependent cellular cytotoxicity, and cytokine release. However, polymorphisms in low affinity FcγRs have been associated with altered avidity toward IgG, thereby substantially impacting clinical outcomes of multimodular therapy when targeting cancer or autoimmune diseases with mAbs as well as the frequency and severity of autoimmune diseases. In this context, we investigated the consequences of three nonsynonymous single nucleotide polymorphisms (SNPs) for the high affinity receptor for IgG, FcγRI...
August 16, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28813462/a-comprehensive-profiling-of-t-and-b-lymphocyte-receptor-repertoires-from-a-chinese-origin-rhesus-macaque-by-high-throughput-sequencing
#14
Longfei Fu, Xinyang Li, Wei Zhang, Changxi Wang, Jinghua Wu, Huanming Yang, Jian Wang, Xiao Liu
Due to the close genetic background, high similarity of physiology, and susceptibility to infectious and metabolic diseases with humans, rhesus macaques have been widely used as an important animal model in biomedical research, especially in the study of vaccine development and human immune-related diseases. In recent years, high-throughput sequencing based immune repertoire sequencing (IR-SEQ) has become a powerful tool to study the dynamic adaptive immune responses. Several previous studies had analyzed the responses of B cells to HIV-1 trimer vaccine or T cell repertoire of rhesus macaques using this technique, however, there are little studies that had performed a comprehensive analysis of immune repertoire of rhesus macaques, including T and B lymphocytes...
2017: PloS One
https://www.readbyqxmd.com/read/28812721/predicting-evolution
#15
Michael Lässig, Ville Mustonen, Aleksandra M Walczak
The face of evolutionary biology is changing: from reconstructing and analysing the past to predicting future evolutionary processes. Recent developments include prediction of reproducible patterns in parallel evolution experiments, forecasting the future of individual populations using data from their past, and controlled manipulation of evolutionary dynamics. Here we undertake a synthesis of central concepts for evolutionary predictions, based on examples of microbial and viral systems, cancer cell populations, and immune receptor repertoires...
February 21, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812002/image-guided-thermal-ablation-with-mr-based-thermometry
#16
REVIEW
Mingming Zhu, Ziqi Sun, Chin K Ng
Thermal ablation techniques such as radiofrequency, microwave, high intensity focused ultrasound (HIFU) and laser have been used as minimally invasive strategies for the treatment of variety of cancers. MR thermometry methods are readily available for monitoring thermal distribution and deposition in real time, leading to decrease of incidents of normal tissue damage around targeted lesion. HIFU and laser-induced thermal therapy (LITT) are the two widely accepted tumor ablation techniques because of their compatibility with MR systems...
June 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28811963/characterization-of-the-cryoablation-induced-immune-response-in-kidney-cancer-patients
#17
Taigo Kato, Tomoyuki Iwasaki, Motohide Uemura, Akira Nagahara, Hiroki Higashihara, Keigo Osuga, Yuji Ikeda, Kazuma Kiyotani, Jae-Hyun Park, Norio Nonomura, Yusuke Nakamura
Cryoablation is one of treatment modalities for kidney cancer and is expected to induce strong local immune responses as well as systemic T-cell-mediated immune reactions that may lead to the regression of distant metastatic lesions. Thus, the characterization of T cell repertoire and immune environment in tumors before and after treatment should contribute to the better understanding of the cryoablation-induced anticancer immune responses. In this study, we collected tumor tissues from 22 kidney cancer patients, before cryoablation and at 3 mo after cryoablation...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28811340/type-iii-interferon-mediated-signaling-is-critical-for-controlling-live-attenuated-yellow-fever-virus-infection-in-vivo
#18
Florian Douam, Yentli E Soto Albrecht, Gabriela Hrebikova, Evita Sadimin, Christian Davidson, Sergei V Kotenko, Alexander Ploss
Yellow fever virus (YFV) is an arthropod-borne flavivirus, infecting ~200,000 people worldwide annually and causing about 30,000 deaths. The live attenuated vaccine strain, YFV-17D, has significantly contributed in controlling the global burden of yellow fever worldwide. However, the viral and host contributions to YFV-17D attenuation remain elusive. Type I interferon (IFN-α/β) signaling and type II interferon (IFN-γ) signaling have been shown to be mutually supportive in controlling YFV-17D infection despite distinct mechanisms of action in viral infection...
August 15, 2017: MBio
https://www.readbyqxmd.com/read/28810984/impact-of-a-7-day-field-training-on-oral-health-condition-in-japan-ground-self-defense-force-personnel
#19
Koji Yamashita, Takeshi Nishiyama, Emi Nagata, Atik Ramadhani, Miki Kawada-Matsuo, Hitoshi Komatsuzawa, Takahiko Oho
INTRODUCTION: In the Japan Ground Self-Defense Force (JGSDF), personnel periodically perform intensive training that mimics the conditions seen in battle and during natural disasters. Military training involves intensive, stressful conditions, and changes in immune responses have been found in personnel following training. Good oral condition is important for military personnel to fulfill their duties; however, they have difficulty performing daily oral care under training conditions...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28810810/reduced-expression-of-siglec-7-nkg2a-and-cd57-on-terminally-differentiated-cd56-cd16-nk-cell-subset-is-associated-with-nk-cell-dysfunction-in-chronic-hiv-1-clade-c-infection
#20
Michael Zulu, Kewreshini Naidoo, Zenele Mncube, Manjeetha Jaggernath, Philip Jr Goulder, Thumbi Ndung'u, Marcus Altfeld, Christina Fanesa Thobakgale
BACKGROUND: HIV-1 viremia has been shown to induce several phenotypic and functional abnormalities in natural killer (NK) cells. To assess immune defects associated with HIV viremia, we examined NK cell function, differentiation status and phenotypic alterations based on expression of inhibitory and activating receptors on NK cells in HIV-1 subtype C chronically infected participants from Durban, South Africa. METHODS: NK cell phenotypic profiles were characterized by assessing Siglec-7, NKG2A and NKG2C markers on frozen peripheral blood mononuclear cells (PBMCs) from viremic, antiretroviral therapy (ART)-naïve HIV-1 chronically infected participants (n=23), HIV-1 chronically infected participants who have been on combination antiretroviral therapy (cART) for at least 12 months (n=23) compared to healthy donors (n=23)...
August 16, 2017: AIDS Research and Human Retroviruses
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