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https://www.readbyqxmd.com/read/29913309/the-causes-and-consequences-of-variation-in-human-cytokine-production-in-health
#1
REVIEW
Melanie Schirmer, Vinod Kumar, Mihai G Netea, Ramnik J Xavier
Cytokines are important cell-signaling molecules that activate and modulate immune responses. Major factors influencing cytokine variation in healthy individuals are host genetics, non-heritable factors and the microbiome. Genetic variation accounts for a significant part of heterogeneity in cytokine production by peripheral blood mononuclear cells. Variation in cytokines such as IL-6 and IL-6Ra is strongly influenced by heritability, suggesting an evolutionarily pressure for their genetic regulation that potentially contributes to differences in immune responsiveness between human populations...
June 15, 2018: Current Opinion in Immunology
https://www.readbyqxmd.com/read/29913200/increased-t-cell-immunosenescence-and-accelerated-maturation-phenotypes-in-older-kidney-transplant-recipients
#2
J M Schaenman, M Rossetti, T Sidwell, V Groysberg, G Sunga, Y Korin, E Liang, X Zhou, B Abdallah, E Lum, S Bunnapradist, T Pham, G Danovitch, E F Reed
Older kidney transplant recipients experience increased rates of infection and death, and less rejection, compared with younger patients. However, little is known about immune dysfunction in older compared with younger kidney transplant recipients and whether it is associated with infection. We evaluated T cell phenotypes including maturation, immune senescence, and exhaustion in a novel investigation into differences in older compared with younger patients receiving identical immune suppression regimens. We evaluated PBMC from 60 kidney transplant recipients (23 older and 37 matched younger patients) by multiparameter immune phenotyping...
June 15, 2018: Human Immunology
https://www.readbyqxmd.com/read/29912613/cryptic-exon-splicing-function-of-tardbp-interacts-with-autophagy-in-nervous-tissue
#3
Pascual Torres, Omar Ramírez-Núñez, Ricardo Romero-Guevara, Gisel Barés, Ana B Granado-Serrano, Victòria Ayala, Jordi Boada, Laia Fontdevila, Monica Povedano, Daniel Sanchís, Reinald Pamplona, Isidro Ferrer, Manuel Portero-Otín
TARDBP (TAR DNA binding protein) is one of the components of neuronal aggregates in sporadic amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration. We have developed a simple quantitative method to evaluate TARDBP splicing function that was applied to spinal cord, brainstem, motor cortex, and occipital cortex in ALS (n=8) cases compared to age- and gender-matched control (n=17). Then, we quantified the abundance of a TARDBP-spliced cryptic exon present in ATG4B (autophagy related 4B cysteine peptidase) mRNA...
June 18, 2018: Autophagy
https://www.readbyqxmd.com/read/29912343/impact-on-testicular-function-of-a-single-ablative-activity-of-3-7-gbq-radioactive-iodine-for-differentiated-thyroid-carcinoma
#4
N Bourcigaux, C Rubino, I Berthaud, M E Toubert, B Donadille, L Leenhardt, I Petrot-Keller, S Brailly-Tabard, J Fromigué, F de Vathaire, T Simon, J P Siffroi, M Schlumberger, P Bouchard, S Christin-Maitre
STUDY QUESTION: What are the consequences of radioactive iodine (RAI) therapy for testicular function? SUMMARY ANSWER: A single activity of 3.7 GBq RAI for differentiated thyroid carcinoma (DTC) treatment in young men transiently altered Sertoli cell function and induced sperm chromosomal abnormalities. WHAT IS KNOWN ALREADY: Few studies, mainly retrospective, have reported the potential impacts of RAI on endocrine and exocrine testicular function...
June 15, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29910982/pretreating-mesenchymal-stem-cells-with-electrical-stimulation-causes-sustained-long-lasting-pro-osteogenic-effects
#5
Maria Eischen-Loges, Karla M C Oliveira, Mit B Bhavsar, John H Barker, Liudmila Leppik
Background: Electrical stimulation (ES) has a long history of successful use in the clinical treatment of refractory, non-healing bone fractures and has recently been proposed as an adjunct to bone tissue-engineering treatments to optimize their therapeutic potential. This idea emerged from ES's demonstrated positive effects on stem cell migration, proliferation, differentiation and adherence to scaffolds, all cell behaviors recognized to be advantageous in Bone Tissue Engineering (BTE)...
2018: PeerJ
https://www.readbyqxmd.com/read/29910738/immunomodulatory-effects-of-dietary-seaweeds-in-lps-challenged-atlantic-salmon-salmo-salar-as-determined-by-deep-rna-sequencing-of-the-head-kidney-transcriptome
#6
Arjan P Palstra, Jeroen Kals, Ainhoa Blanco Garcia, Ron P Dirks, Marnix Poelman
Seaweeds may represent immuno-stimulants that could be used as health-promoting fish feed components. This study was performed to gain insights into the immunomodulatory effects of dietary seaweeds in Atlantic salmon. Specifically tested were 10% inclusion levels of Laminaria digitata (SW1) and a commercial blend of seaweeds (Oceanfeed® ) (SW2) against a fishmeal based control diet (FMC). Differences between groups were assessed in growth, feed conversion ratio and blood parameters hematocrit and hemoglobin...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29910732/bleomycin-aggravates-atopic-dermatitis-via-lung-inflammation-in-2-4-dinitrochlorobenzene-induced-nc-nga-mice
#7
Yoon-Young Sung, Seung-Hyung Kim, Won-Kyung Yang, Yang-Chun Park, Ho Kyoung Kim
Atopic dermatitis (AD) is a chronic inflammatory skin disease. Bleomycin (BLM) contributes to the induction of pulmonary inflammation and fibrosis in animals. Although skin and lung tissue inflammation is closely related in the pathogenesis of allergic diseases, a proper animal model for investigating the relationship between skin and lung inflammation is lacking. Therefore, we developed a mouse model of AD with relapsing dermatitis and pulmonary fibrosis caused by the administration of allergen and BLM. The present study determined whether lung injury caused by the bronchial application of BLM would exacerbate AD-like allergic inflammation induced by 2, 4-dinitrochlorobenzene (DNCB) in NC/Nga mice...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29910677/propofol-attenuates-osteoclastogenesis-by-lowering-rankl-opg-ratio-in-mouse-osteoblasts
#8
Do-Won Lee, Jae-Young Kwon, Hae-Kyu Kim, Hyeon-Jeong Lee, Eun-Soo Kim, Hyae-Jin Kim, Hyung-Joon Kim, Han-Bit Lee
Bone remodeling plays an important role in the bone healing process; for example, following fracture. The relative ratio of the receptor activator of nuclear factor kappa B ligand (RANKL)/ osteoprotegerin (OPG) controls osteoclast differentiation, thereby playing a pivotal role in the regulation of bone remodeling. Propofol, a widely used anesthetic agent in orthopedic procedures, is considered to possess potential antioxidant properties owing to its structural similarity to α-tocopherol. Antioxidants are known to enhance bone healing...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29909981/developmental-origin-governs-cd8-t-cell-fate-decisions-during-infection
#9
Norah L Smith, Ravi K Patel, Arnold Reynaldi, Jennifer K Grenier, Jocelyn Wang, Neva B Watson, Kito Nzingha, Kristel J Yee Mon, Seth A Peng, Andrew Grimson, Miles P Davenport, Brian D Rudd
Heterogeneity is a hallmark feature of the adaptive immune system in vertebrates. Following infection, naive T cells differentiate into various subsets of effector and memory T cells, which help to eliminate pathogens and maintain long-term immunity. The current model suggests there is a single lineage of naive T cells that give rise to different populations of effector and memory T cells depending on the type and amounts of stimulation they encounter during infection. Here, we have discovered that multiple sub-populations of cells exist in the naive CD8+ T cell pool that are distinguished by their developmental origin, unique transcriptional profiles, distinct chromatin landscapes, and different kinetics and phenotypes after microbial challenge...
June 6, 2018: Cell
https://www.readbyqxmd.com/read/29909804/genotype-replacement-of-the-human-parainfluenza-virus-type-2-in-croatia-between-2011-and-2017-the-role-of-neutralising-antibodies
#10
M Šantak, M Lang Balija, G Mlinarić Galinović, S Ljubin Sternak, T Vilibić-Čavlek, I Tabain
Previously we reported on the HPIV2 genotype distribution in Croatia 2011-2014. Here we expand this period up to 2017 and confirm that G1a genotype has replaced G3 genotype from the period 2011-2014. Our hypothesis was that the G1a-to-G3 genotype replacement is an antibody-driven event. A cross-neutralisation with anti-HPIV2 sera specific for either G1a or G3 genotype revealed the presence of genotype-specific antigenic determinants. By the profound, in silico analyses three potential B cell epitopic regions were identified in the hemagglutinin neuraminidase (regions 314-361 and 474-490) and fusion protein (region 440-484)...
June 18, 2018: Epidemiology and Infection
https://www.readbyqxmd.com/read/29908990/development-and-validation-of-response-markers-to-predict-survival-and-pleurodesis-success-in-patients-with-malignant-pleural-effusion-promise-a-multicohort-analysis
#11
Ioannis Psallidas, Nikolaos I Kanellakis, Stephen Gerry, Marie Laëtitia Thézénas, Philip D Charles, Anastasia Samsonova, Herbert B Schiller, Roman Fischer, Rachelle Asciak, Robert J Hallifax, Rachel Mercer, Melissa Dobson, Tao Dong, Ian D Pavord, Gary S Collins, Benedikt M Kessler, Harvey I Pass, Nick Maskell, Georgios T Stathopoulos, Najib M Rahman
BACKGROUND: The prevalence of malignant pleural effusion is increasing worldwide, but prognostic biomarkers to plan treatment and to understand the underlying mechanisms of disease progression remain unidentified. The PROMISE study was designed with the objectives to discover, validate, and prospectively assess biomarkers of survival and pleurodesis response in malignant pleural effusion and build a score that predicts survival. METHODS: In this multicohort study, we used five separate and independent datasets from randomised controlled trials to investigate potential biomarkers of survival and pleurodesis...
June 13, 2018: Lancet Oncology
https://www.readbyqxmd.com/read/29908814/maternal-supply-of-methionine-during-late-pregnancy-is-associated-with-changes-in-immune-function-and-abundance-of-microrna-and-mrna-in-holstein-calf-polymorphonuclear-leukocytes
#12
C B Jacometo, A S Alharthi, Z Zhou, D Luchini, J J Loor
Pregnancy and early life are critical periods during which environmental factors such as nutrition can affect development. Rumen-protected methionine (Met; RPM) supplementation during the prepartum period improves not only performance but immune responses in dairy cows. We investigated the effects of enhanced maternal supply of Met via feeding RPM on whole-blood in vitro lipopolysaccharide (LPS; 0, 0.01, or 5 μg/mL of blood) challenge and targeted microRNA and mRNA abundance in calf blood polymorphonuclear leukocytes (PMNL)...
June 13, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29908067/effects-of-type-i-interferons-in-malaria
#13
REVIEW
Ismail Sebina, Ashraful Haque
Type I interferons are a family of cytokines with a wide range of biological activities including anti-viral and immune-regulatory functions. Here, we focus on the protozoan parasitic disease, malaria, and examine the effects of type I IFN-signalling during Plasmodium infection of humans and experimental mice. Since the 1960's, there have been many studies in this area, but a simple explanation for the role of type I IFN has not emerged. Although epidemiological data are consistent with roles for type I IFN in influencing malaria disease severity, functional proof of this remains sparse in humans...
June 16, 2018: Immunology
https://www.readbyqxmd.com/read/29908007/cocl-2-a-mimic-of-hypoxia-enhances-bone-marrow-mesenchymal-stem-cells-migration-and-osteogenic-differentiation-via-stat3-signaling-pathway
#14
Xin Yu, Qilong Wan, Gu Cheng, Xin Cheng, Jing Zhang, Janak L Pathak, Zubing Li
Mesenchymal stem cells homing and migration is a crucial step during bone fracture healing. Hypoxic environment in fracture site induces bone marrow mesenchymal stem cells (BMSCs) migration, but its mechanism remains unclear. Our previous study and studies by other groups have reported the involvement of signal transducer and activator of transcription 3 (STAT3) pathway in cell migration. However, the role of STAT3 pathway in hypoxia-induced cell migration is still unknown. In this study, we investigated the role of STAT3 signaling in hypoxia-induced BMSCs migration and osteogenic differentiation...
June 16, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29907883/b-cell-development-is-critically-dependent-on-nfatc1-activity
#15
Sabrina Giampaolo, Gabriela Wójcik, Stefan Klein-Hessling, Edgar Serfling, Amiya K Patra
B cell development in bone marrow is a precisely regulated complex process. Through successive stages of differentiation, which are regulated by a multitude of signaling pathways and an array of lineage-specific transcription factors, the common lymphoid progenitors ultimately give rise to mature B cells. Similar to early thymocyte development in the thymus, early B cell development in bone marrow is critically dependent on IL-7 signaling. During this IL-7-dependent stage of differentiation, several transcription factors, such as E2A, EBF1, and Pax5, among others, play indispensable roles in B lineage specification and maintenance...
June 15, 2018: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/29907785/inhibitory-effect-of-slit2-on-granulosa-cell-proliferation-mediated-by-the-cdc42-paks-erk1-2-mapk-pathway-in-the-prehierarchical-follicles-of-the-chicken-ovary
#16
Rifu Xu, Ning Qin, Xiaoxing Xu, Xue Sun, Xiaoxia Chen, Jinghua Zhao
The SLIT2 ligand and ROBO receptors of the SLIT/ROBO pathway are expressed in hen ovarian follicles and have been shown to play critical roles in ovary development, cell proliferation and apoptosis in mammals. However, the exact roles of SLIT2 and the molecular mechanisms of chicken follicle development remain poorly understood. Here, we discovered that high levels of SLIT2 suppress FSHR, GDF9, STAR and CYP11A1 mRNA and protein expression in granulosa cells (GCs) and cell proliferation (p < 0.01). However, these inhibitory effects can be abolished by the siRNA-mediated knockdown of the ROBO1 and ROBO2 receptors...
June 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29907570/the-endoplasmic-reticulum-resident-e3-ubiquitin-ligase-hrd1-controls-a-critical-checkpoint-in-b-cell-development-in-mice
#17
Yi Yang, Sinyi Kong, Yana Zhang, Johanna Melo-Cardenas, Beixue Gao, Yusi Zhang, Donna D Zhang, Bin Zhang, JianXun Song, Edward Thorp, Kezhong Zhang, Jinping Zhang, Deyu Fang
Humoral immunity involves multiple checkpoints that occur duringin B-cell development, maturation, and activation. The pre--B-cell receptor (pre-BCR) is expressed following the productive recombination of the immunoglobulin heavy- chain gene, and. sSignalsing through the pre-BCR are is required for the differentiation of pre-B cells into immature B cells. However, the molecular mechanisms controlling the pre-BCR expression and signaling strength remain undefined. Herein, we probed the role of the endoplasmic reticulum-associated, stress-activated E3 ubiquitin ligase HMG-CoA reductase degradation 1 (Hrd1) in B-cell differentiation...
June 15, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29907235/rapid-valproic-acid-induced-modulation-of-the-traumatic-proteome-in-a-porcine-model-of-traumatic-brain-injury-and-hemorrhagic-shock
#18
Michael Weykamp, Vahagn C Nikolian, Isabel S Dennahy, Gerald A Higgins, Patrick E Georgoff, Henriette Remmer, Mohamed H Ghandour, Hasan B Alam
BACKGROUND: Histone deacetylase inhibitors such as valproic acid (VPA) improve survival in lethal models of hemorrhagic shock and polytrauma. Although VPA is known to modulate transcription, its ability to reduce mortality within minutes of administration suggests involvement of a rapid, posttranslational mechanism. We hypothesized that VPA treatment would cause proteomic changes within minutes of treatment including quantitative and/or posttranslational differences in structural and/or effector proteins...
August 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29906661/loss-of-trem2-in-microglia-leads-to-widespread-disruption-of-cell-coexpression-networks-in-mouse-brain
#19
Guillermo Carbajosa, Karim Malki, Nathan Lawless, Hong Wang, John W Ryder, Eva Wozniak, Kristie Wood, Charles A Mein, Richard J B Dobson, David A Collier, Michael J O'Neill, Angela K Hodges, Stephen J Newhouse
Rare heterozygous coding variants in the triggering receptor expressed in myeloid cells 2 (TREM2) gene, conferring increased risk of developing late-onset Alzheimer's disease, have been identified. We examined the transcriptional consequences of the loss of Trem2 in mouse brain to better understand its role in disease using differential expression and coexpression network analysis of Trem2 knockout and wild-type mice. We generated RNA-Seq data from cortex and hippocampus sampled at 4 and 8 months. Using brain cell-type markers and ontology enrichment, we found subnetworks with cell type and/or functional identity...
May 17, 2018: Neurobiology of Aging
https://www.readbyqxmd.com/read/29906458/apolipoprotein-e-plays-crucial-roles-in-maintaining-bone-mass-by-promoting-osteoblast-differentiation-via-erk1-2-pathway-and-by-suppressing-osteoclast-differentiation-via-c-fos-nfatc1-and-nf-%C3%AE%C2%BAb-pathway
#20
Takaaki Noguchi, Kosuke Ebina, Makoto Hirao, Satoru Otsuru, Adam J Guess, Ryota Kawase, Tohru Ohama, Shizuya Yamashita, Yuki Etani, Gensuke Okamura, Hideki Yoshikawa
Apolipoprotein E (ApoE) plays crucial roles not only in lipid metabolism but also in bone metabolism. Specifically ApoE4, one of major ApoE isoforms, has been demonstrated to be associated with increased risk of developing osteoporosis compared to another major isoform ApoE3. However, the detailed mechanism of how the different ApoE isoforms affect bone metabolism remains unclear. Micro-CT analyses of distal femora demonstrated severely decreased bone mass in 48-week-old female homozygous ApoE-knockout (ApoE-KO) mice compared to age- and gender-matched wild type C57BL/6 J (WT) mice...
June 12, 2018: Biochemical and Biophysical Research Communications
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