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Immunization frequency

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https://www.readbyqxmd.com/read/29222811/association-of-hla-dqb1-03-03-with-pityriasis-rosea-in-chinese-patients
#1
L-Y Fu, C-C Xu, X-D Zheng, G Chen, J Zhu, P-G Wang
BACKGROUND: The association of human leucocyte antigen (HLA) with a variety of diseases has been described, especially with various autoimmune diseases. However, there are few studies on the association between HLA and pityriasis rosea (PR). AIM: To investigate the relevance of HLA II alleles with the development of PR. METHODS: Typing for HLA-DRB1, HLA-DQA1 and HLA-DQB1 typing was performed in 55 patients with PR and 90 healthy controls (HCs), using sequence-based typing (SBT) and PCR with sequence-specific primers (PCR-SSP), respectively...
December 8, 2017: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/29220488/disentangling-immediate-adaptive-introgression-from-selection-on-standing-introgressed-variation-in-humans
#2
Evelyn Jagoda, Daniel J Lawson, Jeffrey D Wall, David Lambert, Craig Muller, Michael Westaway, Matthew Leavesley, Terence D Capellini, Marta Mirazón Lahr, Pascale Gerbault, Mark G Thomas, Andrea Bamberg Migliano, Eske Willerslev, Mait Metspalu, Luca Pagani
Recent studies have reported evidence suggesting that portions of contemporary human genomes introgressed from archaic hominin populations went to high frequencies due to positive selection. However, no study to date has specifically addressed the post-introgression population dynamics of these putative cases of adaptive introgression. Here, for the first time, we specifically define cases of immediate adaptive introgression (iAI), in which archaic haplotypes rose to high frequencies in humans as a result of a selective sweep that occurred shortly after the introgression event...
December 6, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/29217527/merkel-cell-carcinoma-in-the-age-of-immunotherapy-facts-and%C3%A2-hopes
#3
Aric Colunga, Thomas Pulliam, Paul Nghiem
Merkel cell carcinoma (MCC) is a rare (~2,000 US cases/year) but aggressive neuroendocrine tumor of the skin. For advanced MCC, cytotoxic chemotherapy only infrequently (<10% of cases) offers durable clinical responses (>1 year) suggesting a great need for improved therapeutic options. In 2008, the Merkel cell polyomavirus (MCPyV) was discovered and is clonally integrated in ~80% of MCC tumors. The remaining 20% of MCC tumors have large numbers of UV-associated mutations. Importantly, both the UV-induced-neoantigens in virus-negative tumors and the MCPyV T antigen oncogenes that are required for virus-positive tumor growth are immunogenic...
December 7, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29216786/a-study-of-single-nucleotide-polymorphisms-in-cd157-aim2-and-jarid2-genes-in-han-chinese-children-with-autism-spectrum-disorder
#4
Weiming Mo, Jun Liu, Zengyu Zhang, Hong Yu, Aiping Yang, Fei Qu, Pingfang Hu, Zhuo Liu, Fengpei Hu
PURPOSE: Autism spectrum disorder (ASD) is a group of developmental brain disorders caused by genetic and environmental factors. The objective of this study was to investigate whether single nucleotide polymorphisms (SNPs) in genes related to immune function were associated with ASD in Chinese Han children. MATERIALS AND METHODS: A total of 201 children with ASD and 200 age- and gender-matched healthy controls were recruited from September 2012 to June 2106. A TaqMan probe-based approach was used to genotype SNPs corresponding to rs28532698 and rs4301112 in CD157, rs855867 in AIM2, and rs2237126 in JARID2...
December 7, 2017: Nordic Journal of Psychiatry
https://www.readbyqxmd.com/read/29215756/downregulation-of-regulatory-t-cell-function-in-patients-with-delayed-fracture-healing
#5
Hui Jiang, Yunfan Ti, Yicun Wang, Jun Wang, Menghan Chang, Jianning Zhao, Guojing Sun
Bone fracture healing is a multistage regenerative process that requires the collaboration of various cell types, with approximately 5% - 10% of fractures not healing properly. Accumulating evidence suggests that dysregulations in the immune system are associated with defective healing. In a cohort of 30 bone fracture patients between 50 and 62 years of age, 8 patients displayed delayed healing. Compared to the 22 normal healing patients, these 8 delayed healing patients presented significantly lower frequencies of CD4+ CD25hi Foxp3+ canonical regulatory T cells immediately following bone fracture and early on during the healing process...
December 7, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/29215603/differential-location-and-distribution-of-hepatic-immune-cells
#6
REVIEW
Maria Alice Freitas-Lopes, Kassiana Mafra, Bruna A David, Raquel Carvalho-Gontijo, Gustavo B Menezes
The liver is one of the main organs in the body, performing several metabolic and immunological functions that are indispensable to the organism. The liver is strategically positioned in the abdominal cavity between the intestine and the systemic circulation. Due to its location, the liver is continually exposed to nutritional insults, microbiota products from the intestinal tract, and to toxic substances. Hepatocytes are the major functional constituents of the hepatic lobes, and perform most of the liver's secretory and synthesizing functions, although another important cell population sustains the vitality of the organ: the hepatic immune cells...
December 7, 2017: Cells
https://www.readbyqxmd.com/read/29214629/targeting-early-pkc%C3%AE-dependent-t-cell-infiltration-of-dystrophic-muscle-reduces-disease-severity-in-a-mouse-model-of-muscular-dystrophy
#7
Biliana Lozanoska-Ochser, Anna Benedetti, Giuseppe Rizzo, Valeria Marrocco, Rosanna Di Maggio, Piera Fiore, Marina Bouche
Chronic muscle inflammation is a critical feature of Duchenne muscular dystrophy and contributes to muscle fibre injury and disease progression. Although previous studies have implicated T cells in the development of muscle fibrosis, little is known about their role during the early stages of muscular dystrophy. Here, we show that T cells are among the first cells to infiltrate mdx mouse dystrophic muscle, prior to the onset of necrosis, suggesting an important role in early disease pathogenesis. Based on our comprehensive analysis of the kinetics of the immune response, we further identify the early pre-necrotic stage of muscular dystrophy as the relevant time frame for T cell-based interventions...
December 7, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/29212934/influenza-a-virus-reassortment-is-limited-by-anatomical-compartmentalization-following-co-infection-via-distinct-routes
#8
Mathilde Richard, Sander Herfst, Hui Tao, Nathan T Jacobs, Anice C Lowen
Exchange of gene segments through reassortment is a major feature of influenza A virus evolution and frequently contributes to the emergence of novel epidemic, pandemic and zoonotic strains. It has long been evident that viral diversification through reassortment is constrained by genetic incompatibility between divergent parental viruses. In contrast, the role of virus-extrinsic factors in determining the likelihood of reassortment has remained unclear. To evaluate the impact of such factors in the absence of confounding effects of segment mismatch, we previously reported an approach in which reassortment between wild-type (wt) and genetically tagged variant (var) viruses of the same strain is measured...
December 6, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29212085/the-impact-of-anti-tnf-therapy-on-cd4-and-cd8-cell-subsets-in-ankylosing-spondylitis
#9
Sonja Dulic, Zsofia Vasarhelyi, Anna Bajnok, Balazs Szalay, Gergely Toldi, Laszlo Kovacs, Attila Balog
OBJECTIVES: Ankylosing spondylitis (AS) is a chronic, progressive immune-mediated inflammatory disease, driven primarily by Th1 and Th17 cells. Anti-TNF therapies are successfully used in AS to achieve and maintain remission. However, their influence on the composition of T-cell subsets is not clear. We aimed to characterize the changes in the T-cell repertoire after a long-term anti-TNF treatment in AS patients. METHODS: Twenty-two AS patients under long-term anti-TNF therapy were evaluated (15 anti-TNF responders and 7 nonresponders)...
December 6, 2017: Pathobiology: Journal of Immunopathology, Molecular and Cellular Biology
https://www.readbyqxmd.com/read/29211803/hypoxia-and-inactivity-related-physiological-changes-precede-or-take-place-in-absence-of-significant-rearrangements-in-bacterial-community-structure-the-planhab-randomized-trial-pilot-study
#10
Robert Šket, Nicole Treichel, Susanne Kublik, Tadej Debevec, Ola Eiken, Igor Mekjavić, Michael Schloter, Marius Vital, Jenna Chandler, James M Tiedje, Boštjan Murovec, Zala Prevoršek, Matevž Likar, Blaž Stres
We explored the assembly of intestinal microbiota in healthy male participants during the randomized crossover design of run-in (5 day) and experimental phases (21-day normoxic bed rest (NBR), hypoxic bed rest (HBR) and hypoxic ambulation (HAmb) in a strictly controlled laboratory environment, with balanced fluid and dietary intakes, controlled circadian rhythm, microbial ambiental burden and 24/7 medical surveillance. The fraction of inspired O2 (FiO2) and partial pressure of inspired O2 (PiO2) were 0.209 and 133...
2017: PloS One
https://www.readbyqxmd.com/read/29209324/comprehensive-analysis-of-cytomegalovirus-pp65-antigen-specific-cd8-t-cell-responses-according-to-human-leukocyte-antigen-class-i-allotypes-and-intraindividual-dominance
#11
Seung-Joo Hyun, Hyun-Jung Sohn, Hyun-Joo Lee, Seon-Duk Lee, Sueon Kim, Dae-Hee Sohn, Cheol-Hwa Hong, Haeyoun Choi, Hyun-Il Cho, Tai-Gyu Kim
To define whether individual human leukocyte antigen (HLA) class I allotypes are used preferentially in human cytomegalovirus (CMV)-specific cytotoxic T lymphocyte responses, CD8+ T cell responses restricted by up to six HLA class I allotypes in an individual were measured in parallel using K562-based artificial antigen-presenting cells expressing both CMV pp65 antigen and one of 32 HLA class I allotypes (7 HLA-A, 14 HLA-B, and 11 HLA-C) present in 50 healthy Korean donors. The CD8+ T cell responses to pp65 in the HLA-C allotypes were lower than responses to those in HLA-A and -B allotypes and there was no difference between the HLA-A and HLA-B loci...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29209321/consumption-of-diet-containing-free-amino-acids-exacerbates-colitis-in-mice
#12
Adna Luciana Souza, Sarah Leão Fiorini Aguiar, Mariana Camila Gonçalves Miranda, Luisa Lemos, Mauro Andrade Freitas Guimaraes, Daniela Silva Reis, Patrícia Aparecida Vieira Barros, Emerson Soares Veloso, Toniana Gonçalves Carvalho, Fabiola Mara Ribeiro, Enio Ferreira, Denise Carmona Cara, Ana Cristina Gomes-Santos, Ana Maria Caetano Faria
Dietary proteins can influence the maturation of the immune system, particularly the gut-associated lymphoid tissue, when consumed from weaning to adulthood. Moreover, replacement of dietary proteins by amino acids at weaning has been shown to impair the generation of regulatory T cells in the gut as well as immune activities such as protective response to infection, induction of oral and nasal tolerance as well as allergic responses. Polymeric and elemental diets are used in the clinical practice, but the specific role of intact proteins and free amino acids during the intestinal inflammation are not known...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29209313/unconventional-pro-inflammatory-cd4-t-cell-response-in-b-cell-deficient-mice-infected-with-trypanosoma-cruzi
#13
Melisa Gorosito Serrán, Jimena Tosello Boari, Facundo Fiocca Vernengo, Cristian G Beccaría, María C Ramello, Daniela A Bermejo, Amelia G Cook, Carola G Vinuesa, Carolina L Montes, Eva V Acosta Rodriguez, Adriana Gruppi
Chagas disease, caused by the parasite Trypanosoma cruzi, is endemic in Latin America but has become a global public health concern by migration of infected people. It has been reported that parasite persistence as well as the intensity of the inflammatory immune response are determinants of the clinical manifestations of the disease. Even though inflammation is indispensable for host defense, when deregulated, it can contribute to tissue injury and organ dysfunction. Here, we report the importance of B cells in conditioning T cell response in T...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29209311/codevelopment-of-microbiota-and-innate-immunity-and-the-risk-for-group-b-streptococcal-disease
#14
REVIEW
Julia Kolter, Philipp Henneke
The pathogenesis of neonatal late-onset sepsis (LOD), which manifests between the third day and the third month of life, remains poorly understood. Group B Streptococcus (GBS) is the most important cause of LOD in infants without underlying diseases or prematurity and the third most frequent cause of meningitis in the Western world. On the other hand, GBS is a common intestinal colonizer in infants. Accordingly, despite its adaption to the human lower gastrointestinal tract, GBS has retained its potential virulence and its transition from a commensal to a dangerous pathogen is unpredictable in the individual...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29208761/priming-of-innate-antimycobacterial-immunity-by-heat-killed-listeria-monocytogenes-induces-sterilizing-response-in-the-adult-zebrafish-tuberculosis-model
#15
Hanna Luukinen, Milka Marjut Hammarén, Leena-Maija Vanha-Aho, Aleksandra Svorjova, Laura Kantanen, Sampsa Järvinen, Bruno Vincent Luukinen, Eric Dufour, Mika Rämet, Vesa Pekka Hytönen, Mataleena Parikka
Mycobacterium tuberculosis remains one of the most problematic infectious agents due to its highly developed mechanisms to evade host immune responses combined with the increasing emergence of antibiotic resistance. Host-directed therapies aiming at optimal modulation of immune responses to improve bacterial eradication or to limit excessive inflammation are a new strategy for the treatment of tuberculosis. In this study, we have established a zebrafish-Mycobacterium marinum natural host-pathogen model system to study induced protective immune responses in mycobacterial infection...
November 30, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/29208744/severity-of-acute-infectious-mononucleosis-correlates-with-cross-reactive-influenza-cd8-t-cell-receptor-repertoires
#16
Nuray Aslan, Levi B Watkin, Anna Gil, Rabinarayan Mishra, Fransenio G Clark, Raymond M Welsh, Dario Ghersi, Katherine Luzuriaga, Liisa K Selin
Fifty years after the discovery of Epstein-Barr virus (EBV), it remains unclear how primary infection with this virus leads to massive CD8 T-cell expansion and acute infectious mononucleosis (AIM) in young adults. AIM can vary greatly in severity, from a mild transient influenza-like illness to a prolonged severe syndrome. We questioned whether expansion of a unique HLA-A2.01-restricted, cross-reactive CD8 T-cell response between influenza virus A-M158 (IAV-M1) and EBV BMLF1280 (EBV-BM) could modulate the immune response to EBV and play a role in determining the severity of AIM in 32 college students...
December 5, 2017: MBio
https://www.readbyqxmd.com/read/29208499/identification-of-snp-markers-associated-with-tolerance-to-ammonia-toxicity-by-selective-genotyping-from-de-novo-assembled-transcriptome-in-litopenaeus-vannamei
#17
Xia Lu, Jie Kong, Xianhong Meng, Baoxiang Cao, Kun Luo, Ping Dai, Sheng Luan
The high concentration of ammonia from deteriorated aquaculture environments and the intensive culture system could increase the susceptibility to pathogens and even cause high mortality in Litopenaeus vannamei. In addition, we have revealed that the ammonia-tolerant shrimp also have high disease resistance in L. vannamei. In the present study, in order to identify SNP markers associated with tolerance to ammonia toxicity, we developed and characterized SNPs from our previous transcriptome sequencing data of ammonia-stressed and control groups, and a marker-trait association analysis was performed for marker-assisted selection (MAS) to increase production in L...
December 2, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29208210/evaluation-of-the-delta-neutrophil-index-from-an-automated-blood-cell-analyser-in-septic-dogs
#18
R Troìa, C Agnoli, S Calipa, S Segalina, E Murgia, M Gruarin, F Dondi, M Giunti
Immature granulocytes (IG) are a marker of severe inflammatory states in human beings and animals, and have been linked to a diagnosis of sepsis and poor prognosis. The delta neutrophil index (DNI), automatically calculated by a haematological analyser, provides an estimate of circulating IG. In particular, an increased DNI value has been associated with the severity of sepsis, and mortality, in critically ill human beings. The aims of this study were to determine the DNI reference interval (RI) in healthy dogs, and to evaluate its diagnostic and prognostic significance in dogs with sepsis...
December 2017: Veterinary Journal
https://www.readbyqxmd.com/read/29205714/genetic-variants-in-ntcp-exon-gene-are-associated-with-hbv-infection-status-in-a-chinese-han-population
#19
Wennan Wu, Yongbin Zeng, Jinpiao Lin, Yingying Wu, Tianbin Chen, Zhen Xun, Qishui Ou
OBJECTIVE: Sodium taurocholate co-transporting polypeptide (NTCP) plays an important role in the enterohepatic circulation of bile acids. Recently, NTCP was identified as a hepatitis B virus (HBV) receptor. The aim of this study is to investigate the association of NTCP polymorphisms with HBV clinical outcomes and investigate the relationship between NTCP polymorphisms and the serum bile acid level in Chinese Han population. METHODS: The single nucleotide polymorphisms (SNPs), rs2296651 and rs4646285, were genotyped in 1619 Chinese Han individuals...
December 4, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/29205270/severe-multiple-sclerosis-reactivation-during-prolonged-lymphopenia-after-dimethyl-fumarate-discontinuation
#20
C Zecca, C G Antozzi, V Torri Clerici, M Ferrazzini, R E Mantegazza, S Rossi, C Gobbi
BACKGROUND: Delayed-release dimethyl fumarate (DMF) treatment can be associated with reduced lymphocyte and leucocyte counts, which might persist after DMF discontinuation. CASE PRESENTATION: We report the case of a patient with severe disease reactivation despite prolonged lymphopenia after DMF discontinuation. We describe the frequency and impact of prolonged lymphopenia after DMF discontinuation at two tertiary MS centres. A 36-year-old female patient with multiple sclerosis was switched to DMF after 14 years of treatment with interferon beta-1a...
December 3, 2017: Acta Neurologica Scandinavica
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