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https://www.readbyqxmd.com/read/28431078/effect-of-threonine-on-secretory-immune-system-using-a-chicken-intestinal-ex%C3%A2-vivo-model-with-lipopolysaccharide-challenge
#1
Q Zhang, X Chen, S D Eicher, K M Ajuwon, T J Applegate
Secretory IgA (sIgA) and its transcytosis receptor, polymeric immunoglobulin receptor (pIgR), along with mucus, form the first lines of intestinal defense. Threonine (Thr) is a major component of intestinal mucins and IgA, which are highly secreted under lipopolysaccharide (LPS) induced inflammation. In the current study, the effect of Thr on the secretory immune system was determined in an ex vivo chicken ileal explant model. Results showed that a 2-hour Thr-deprivation of culture medium induced a compensatory increase in the mRNA expression of interleukin-8 (IL-8), mucin 2 ( ), and IgA during LPS challenge, and this increase was suppressed with Thr addition to the media ( P  ≤ 0...
April 18, 2017: Poultry Science
https://www.readbyqxmd.com/read/28429310/the-protective-association-of-endogenous-immunoglobulins-against-sepsis-mortality-is-restricted-to-patients-with-moderate-organ-failure
#2
Ignacio Martin-Loeches, Arturo Muriel-Bombín, Ricard Ferrer, Antonio Artigas, Jordi Sole-Violan, Leonardo Lorente, David Andaluz-Ojeda, Adriele Prina-Mello, Ruben Herrán-Monge, Borja Suberviola, Ana Rodriguez-Fernandez, Pedro Merino, Ana M Loza, Pablo Garcia-Olivares, Eduardo Anton, Eduardo Tamayo, Wysali Trapiello, Jesús Blanco, Jesús F Bermejo-Martin
BACKGROUND: Pre-evaluation of endogenous immunoglobulin levels is a potential strategy to improve the results of intravenous immunoglobulins in sepsis, but more work has to be done to identify those patients who could benefit the most from this treatment. The objective of this study was to evaluate the impact of endogenous immunoglobulins on the mortality risk in sepsis depending on disease severity. METHODS: This was a retrospective observational study including 278 patients admitted to the ICU with sepsis fulfilling the SEPSIS-3 criteria, coming from the Spanish GRECIA and ABISS-EDUSEPSIS cohorts...
December 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28427948/comprehensive-characterization-of-humoral-correlates-of-human-immunodeficiency-virus-1-superinfection-acquisition-in-high-risk-kenyan-women
#3
Keshet Ronen, Adam S Dingens, Susan M Graham, Walter Jaoko, Kishor Mandaliya, R Scott McClelland, Julie Overbaugh
HIV-1 superinfection, in which an infected individual acquires a second HIV-1 infection from a different partner, is one of the only settings in which HIV acquisition occurs in the context of a pre-existing immune response to natural HIV infection. There is evidence that initial infection provides some protection from superinfection, particularly after 6months of initial infection, when development of broad immunity occurs. Comparison of the immune response of superinfected individuals at the time of superinfection acquisition to that of individuals who remain singly infected despite continued exposure can shed light on immune correlates of HIV acquisition to inform prophylactic vaccine design...
April 7, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28425252/allergic-and-autoimmune-disorders-in-families-with-selective-iga-deficiency
#4
Mustafa Erkoçoğlu, Ayşe Metin, Ayşenur Kaya, Celal Özcan, Ayşegül Akan, Ersoy Civelek, Murat Çapanoğlu, Tayfur Giniş, Can Naci Kocabaş
BACKGROUND/AIM: IgA deficiency is the most common human primary immunodeficiency. The prevalence of allergic disorders and autoimmunity is thought to be increased in selective IgA deficiency (sIgAD). However, it is currently unclear if these disorders coincide within these families. We aimed to evaluate the frequency of allergic and autoimmune disorders in children with sIgAD and their first-degree relatives (FDRs). MATERIALS AND METHODS: The study included 81 children diagnosed with sIgAD and 274 of their FDRs...
April 18, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28424690/bacillus-subtilis-improves-immunity-and-disease-resistance-in-rabbits
#5
Mengjiao Guo, Fahao Wu, Guangen Hao, Qin Qi, Rong Li, Ning Li, Liangmeng Wei, Tongjie Chai
Probiotics such as Lactobacillus and Bifidobacterium have been successfully used to promote growth and prevent diseases. Previous reports have demonstrated that Bacillus subtilis (B. subtilis) was a potential probiotic for animals. In this research, 180 B. subtilis were isolated from the soil, identified, and investigated in vitro. Furthermore, five B. subtilis were selected and mixed to investigate their effect on growth performance, immune response, intestine microbiota, and disease resistance in rabbits...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28424686/mucosal-and-systemic-immune-responses-to-influenza-h7n9-antigen-ha1-2-co-delivered-intranasally-with-flagellin-or-polyethyleneimine-in-mice-and-chickens
#6
Li Song, Dan Xiong, Hongqin Song, Lili Wu, Meihua Zhang, Xilong Kang, Zhiming Pan, Xinan Jiao
Consecutive cases of human infection with H7N9 influenza viruses since 2013 in China have prompted efforts to develop an effective treatment. Subunit vaccines introduced by intranasal administration can block an infection at its primary site; flagellin (fliC) and polyethyleneimine (PEI) have been shown to be potent adjuvants. We previously generated the hemagglutinin (HA)1-2-fliC fusion protein consisting of the globular head domain (HA1-2; amino acids 62-284) of HA fused with Salmonella typhimurium fliC. In the present study, we investigated its effectiveness of both flagellin and PEI as mucosal adjuvants for the H7N9 influenza subunit vaccine...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28423882/various-levels-of-rapeseed-meal-in-weaning-pig-diet-from-weaning-to-finishing-periods
#7
Sung Ho Do, Byeong Ock Kim, Lin Hu Fang, Dong Hyeon You, Jin Su Hong, Y Y Kim
Objective: This experiment was conducted to investigate the influence of rapeseed meal (RSM) supplementation in weaning pig diet on growth performance, blood profile, carcass characteristics and economic analysis on weaning to finishing pigs. Methods: A total of 120 cross bred ([Yorkshire × Landrace] × Duroc) weaning pigs were allotted to 5 treatments in a randomized complete block (RCB) design. Each treatment had 4 replications with 6 pigs per pen. Five different levels of RSM (0, 2, 4, 6 and 8%) were used as dietary treatments...
March 25, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28422786/antibody-mediated-immune-exclusion-of-hiv
#8
Ruth M Ruprecht, Samir K Lakhashe
PURPOSE OF REVIEW: Although approximately 90% of all HIV transmissions in humans occur through mucosal contact, the induction of mucosal anti-HIV immune responses has remained understudied. Here we summarize data demonstrating the powerful protection that is achievable at mucosal frontlines through virus-specific mucosal IgA alone or combined with IgG. RECENT FINDINGS: Passive immunization with different monoclonal antibody subclasses but identical epitope specificity (the conserved V3-loop crown of HIV gp120) has revealed that the dimeric IgA1 (dIgA1) form with its open hinge can prevent simian-human immunodeficiency virus (SHIV) acquisition in rhesus macaques at a higher rate than dIgA2...
May 2017: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/28422186/high-fat-diet-induces-systemic-b-cell-repertoire-changes-associated-with-insulin-resistance
#9
T D Pham, M H Y Chng, K M Roskin, K J L Jackson, K D Nguyen, J Glanville, J-Y Lee, E G Engleman, S D Boyd
The development of obesity-associated insulin resistance is associated with B-lymphocyte accumulation in visceral adipose tissue (VAT) and is prevented by B-cell ablation. To characterize potentially pathogenic B-cell repertoires in this disorder, we performed high-throughput immunoglobulin (Ig) sequencing from multiple tissues of mice fed high-fat diet (HFD) and regular diet (RD). HFD significantly changed the biochemical properties of Ig heavy-chain complementarity-determining region-3 (CDRH3) sequences, selecting for IgA antibodies with shorter and more hydrophobic CDRH3 in multiple tissues...
April 19, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28421815/cross-protection-conferred-by-immunization-with-a-romph-based-intranasal-fowl-cholera-vaccine
#10
Thanya Varinrak, Pichayanut Poolperm, Takuo Sawada, Nattawooti Sthitmatee
A previous study demonstrated that a recombinant outer membrane protein H (rOmpH)-based intranasal fowl cholera vaccine elicited efficient homologous protection against Pasteurella multocida strain X-73 (A:1) in chickens. The present study aimed to determine the cross protectivity against heterologous P. multocida strains. The rOmpH was purified via electroelution and formulated with two kinds of adjuvants. The vaccine formulations in a total volume of 100 µl were 100 µg rOmpH with 3 µg of Escherichia coli enterotoxin B (LTB) or 10 µg of CpG ODN2007...
April 19, 2017: Avian Pathology: Journal of the W.V.P.A
https://www.readbyqxmd.com/read/28419665/lettuce-produced-hepatitis-c-virus-e1e2-heterodimer-triggers-immune-responses-in-mice-and-antibody-production-after-oral-vaccination
#11
Jihong Liu Clarke, Lisa Paruch, Mihaela-Olivia Dobrica, Iuliana Caras, Catalin Tucureanu, Adrian Onu, Sonya Ciulean, Crina Stavaru, Andre Eerde, Yanliang Wang, Hege Steen, Sissel Haugslien, Catalina Petrareanu, Catalin Lazar, Ioan Popescu, Ralph Bock, Jean Dubuisson, Norica Branza-Nichita
The hepatitis C virus (HCV) is a major etiologic agent for severe liver diseases (e.g., cirrhosis, fibrosis and hepatocellular carcinoma). Approximately 140 million people have chronic HCV infections and about 500,000 die yearly from HCV-related liver pathologies. To date, there is no licenced vaccine available to prevent HCV infection and production of an HCV vaccine remains a major challenge. Here we report the successful production of the HCV E1E2 heterodimer, an important vaccine candidate, in an edible crop (lettuce, Lactuca sativa) using Agrobacterium-mediated transient expression technology...
April 17, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28419351/the-effect-of-diatomaceous-earth-in-live-attenuated-infectious-bronchitis-vaccine-immune-responses-and-protection-against-challenge
#12
Ali Nazmi, Rüdiger Hauck, Lynette B Corbeil, Rodrigo A Gallardo
Live virus vaccines are commonly used in poultry production, particularly in broilers. Massive application and generation of a protective local mucosal and humoral immunity with no adverse effects is the main goal for this strategy. Live virus vaccines can be improved by adding adjuvants to boost mucosal innate and adaptive responses. In a previous study we showed that diatomaceous earth (DE) can be used as adjuvant in inactivated vaccines. The aim of this study was to test DE as adjuvant in an Ark-DPI live infectious bronchitis virus (IBV) vaccine after ocular or spray application...
April 17, 2017: Poultry Science
https://www.readbyqxmd.com/read/28416087/the-impact-of-joint-angle-and-movement-velocity-on-sex-differences-in-the-functional-hamstring-quadriceps-ratio
#13
Mark De Ste Croix, Youssif O ElNagar, John Iga, Francisco Ayala, David James
BACKGROUND: Females are two to eight times more likely to suffer a non-contact injury compared with males thus the purpose of this study was to explore the influence of joint angle and movement velocity on sex differences in the functional hamstring to quadriceps ratio (H/QFUNC). METHODS: Isokinetic concentric and eccentric torque were determined in 110 participants (55 males and 55 females) through a 90° range of movement at 60, 120, and 240°/s. Testing was performed with the hip flexed at 10°...
April 13, 2017: Knee
https://www.readbyqxmd.com/read/28415777/the-immune-impact-of-mimic-endoscopic-retrograde-appendicitis-therapy-and-appendectomy-on-rabbits-of-acute-appendicitis
#14
Suqin Liu, Fenghua Pei, Xinhong Wang, Deliang Li, Lixia Zhao, Yanyan Song, Zhendong Chen, Bingrong Liu
This study was conducted to evaluate the immune impact of mimic endoscopic retrograde appendicitis therapy and appendectomy on rabbits of acute suppurative appendicitis and to determine whether TLR4/MYD88/NF-κB signaling pathway was activated in this process. 48 rabbits were assigned into 4 groups: group I, the mimic endoscopic retrograde appendicitis therapy group; group II, the appendectomy group; group III, the model group; and group IV, the blank group. White blood cells decreased, while levels of C-reactive protein, tumor necrosis factor-α, interleukin-6, interleukin-4, and interleukin-10 increased on the 2nd day in group I and II...
March 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415636/comparison-of-combined-leflunomide-and-low-dose-corticosteroid-therapy-with-full-dose-corticosteroid-monotherapy-for-progressive-iga-nephropathy
#15
Lulin Min, Qin Wang, Liou Cao, Wenyan Zhou, Jiangzi Yuan, Minfang Zhang, Xiajing Che, Shan Mou, Wei Fang, Leyi Gu, Mingli Zhu, Ling Wang, Zanzhe Yu, Jiaqi Qian, Zhaohui Ni
IgA nephropathy is the most common primary glomerulonephritis and one of the leading causes of end-stage renal disease. We performed a randomized, controlled, prospective, open-label trial to determine whether leflunomide combined with low-dose corticosteroid is safe and effective for the treatment of progressive IgA nephropathy, as compared to full-dose corticosteroid monotherapy. Biopsy-proved primary IgA nephropathy patients with an estimated glomerular filtration rate ≥ 30 ml/min/1.73m2 and proteinuria ≥1...
March 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415587/detection-of-a-combination-of-serum-igg-and-iga-antibodies-against-selected-mycobacterial-targets-provides-promising-diagnostic-signatures-for-active-tb
#16
Dolapo O Awoniyi, Ralf Baumann, Novel N Chegou, Belinda Kriel, Ruschca Jacobs, Martin Kidd, Andre G Loxton, Susanne Kaempfer, Mahavir Singh, Gerhard Walzl
Immunoglobulin G (IgG) based tests for the diagnosis of active tuberculosis (TB) disease often show a lack of specificity in TB endemic regions, which is mainly due to a high background prevalence of LTBI. Here, we investigated the combined performance of the responses of different Ig classes to selected mycobacterial antigens in primary healthcare clinic attendees with signs and symptoms suggestive of TB. The sensitivity and specificity of IgA, IgG and/or IgM to LAM and 7 mycobacterial protein antigens (ESAT-6, Tpx, PstS1, AlaDH, MPT64, 16kDa and 19kDa) and 2 antigen combinations (TUB, TB-LTBI) in the plasma of 63 individuals who underwent diagnostic work-up for TB after presenting with symptoms and signs compatible with possible active TB were evaluated...
March 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28414748/dividing-ckd-stage-3-into-g3a-and-g3b-could-better-predict-the-prognosis-of-iga-nephropathy
#17
Jun-Jun Zhang, Gui-Zhen Yu, Zhao-Hui Zheng, Ya-Fei Liu, Yang-Yang Du, Song-Xia Quan, Yu-Jie Liu, Ji-Cheng Lv, Hong Zhang
Chronic kidney disease (CKD) stage 3 was divided into stage G3a and stage G3b in the 2013 Kidney Disease Improving Global Outcomes guidelines. Whether it is appropriate to regard 45 mL/min/per 1.73 m2 as the threshold value of G3a/G3b staging and whether dividing CKD stage 3 into G3a/G3b plays a useful role in assessing the prognosis of patients with IgA nephropathy (IgAN) remain unknown. Three hundred and ninety patients from the First Affiliated Hospital of Zhengzhou University and Peking University First Hospital diagnosed with IgAN in CKD stage 3 were enrolled and successfully followed up...
2017: PloS One
https://www.readbyqxmd.com/read/28414746/local-th17-iga-immunity-correlate-with-protection-against-intranasal-infection-with-streptococcus-pyogenes
#18
Rasmus Mortensen, Dennis Christensen, Lasse Bøllehuus Hansen, Jan Pravsgaard Christensen, Peter Andersen, Jes Dietrich
Streptococcus pyogenes (group A streptococcus, GAS) is responsible for a wide array of infections. Respiratory transmission via droplets is the most common mode of transmission but it may also infect the host via other routes such as lesions in the skin. To advance the development of a future vaccine against GAS, it is therefore important to investigate how protective immunity is related to the route of vaccine administration. To explore this, we examined whether a parenterally administered anti-GAS vaccine could protect against an intranasal GAS infection or if this would require locally primed immunity...
2017: PloS One
https://www.readbyqxmd.com/read/28414063/hypersensitivity-transfusion-reactions-due-to-iga-deficiency-are-rare-according-to-french-hemovigilance-data
#19
Charles Tacquard, Karim Boudjedir, Monique Carlier, Jean-Yves Muller, Philippe Gomis, Paul Michel Mertes
In an analysis of a large French hemovigilance database (2004-2014), hypersensitivity transfusion reactions (HTRs) due to IgA deficiency were extremely rare with an frequency far lower than reported so far. In depth investigation of HTRs for IgA deficiency should be limited to moderate to severe recurrent reactions.
April 13, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28413940/elevated-mrna-expression-of-caspr3-in-patients-with-schizophrenia
#20
Mitsuo Okita, Yuta Yoshino, Jun-Ichi Iga, Shu-Ichi Ueno
BACKGROUND: Recently, it was reported that antipsychotic treatment reverted Contactin Associated Protein-Like 3 (CASPR3, same as CNTNAP3) mRNA expressions in leukocytes of schizophrenia (SCZ) subjects to the same levels as healthy controls. CASPR3 was expressed in various regions of the mice brain (cortex, frontal lobes, corpus callosum, hippocampus, etc.). Thus, this study evaluated CASPR3 mRNA expression in SCZ subjects to find a new clue of schizophrenia pathogenesis. METHODS: One hundred SCZ subjects and 100 age-matched controls were compared...
May 2017: Nordic Journal of Psychiatry
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