keyword
MENU ▼
Read by QxMD icon Read
search

Kir

keyword
https://www.readbyqxmd.com/read/28631269/missing-hla-c-group-1-ligand-in-patients-with-aml-and-mds-is-associated-with-reduced-risk-of-relapse-and-better-survival-after-allogeneic-stem-cell-transplantation-with-fludarabine-and-treosulfan-reduced-toxicity-conditioning
#1
Avichai Shimoni, Luca Vago, Massimo Bernardi, Ronit Yerushalmi, Jacopo Peccatori, Raffaella Greco, Noga Shem-Tov, Alessandro Lo Russo, Ivetta Danylesko, Arie Apel, Chiara Bonini, Maria Teresa Lupo Stanghellini, Arnon Nagler, Fabio Ciceri
Reduced-toxicity conditioning with fludarabine and treosulfan is a dose-intensive regimen with enhanced anti-leukemia effect and acceptable toxicity in AML/MDS. HLA-C regulates natural-killer (NK) cell function by inhibiting Killer immunoglobulin-like receptors (KIR) and is divided into C1 and C2 epitopes. The missing-ligand theory suggests that missing recipient KIR ligands drives NK-alloreactivity after SCT, in the absence of HLA-mismatch by activating unlicensed donor NK cells. We analyzed SCT outcomes in 203 patients with AML/MDS, median age 58 years, given SCT from matched-siblings (n=97) or matched-unrelated donors (n=106), using two treosulfan doses (total 36 or 42 gr/m2)...
June 19, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28627421/hla-g%C3%A2-14bp-insertion-and-the-kir2ds1-hlac2-complex-impact-on-behavioral-impairment-in-children-with-autism-spectrum-disorders
#2
Franca R Guerini, Elisabetta Bolognesi, Matteo Chiappedi, Alessandro Ghezzo, Salvatorica Manca, Michela Zanette, Stefano Sotgiu, Maria Martina Mensi, Milena Zanzottera, Cristina Agliardi, Andrea S Costa, Umberto Balottin, Mario Clerici
Activating KIRs-HLA-C ligands complexes and HLA-G∗14bp insertion/deletion (+/-) polymorphism were associated to Autism Spectrum Disorders (ASD) and were suggested to correlate with inflammation during fetal development. We evaluated whether HLA-G∗14bp(+/-) and KIRs-HLA-C complexes are associated with cognitive and behavioral scores and EEG profile in 119 ASD children (58 from Sardinia, 61 from Peninsular Italy). KIR2DS1-C2; KIR2DS2-C1; KIR2DL1-C2; KIR2DL2-C1; KIR2DL3-C1 and HLA-G∗14bp(+/-) were molecularly genotyped by SSP and gel electrophoresis...
June 13, 2017: Neuroscience
https://www.readbyqxmd.com/read/28620377/anti-double-stranded-dna-igg-participates-in-renal-fibrosis-through-suppressing-the-suppressor-of-cytokine-signaling-1-signals
#3
Ping Wang, Jie Yang, Fang Tong, Zhaoyang Duan, Xingyin Liu, Linlin Xia, Ke Li, Yumin Xia
Suppressor of cytokine signaling 1 (SOCS1) participates in renal fibrosis by downregulating Janus kinase 2 (JAK2)/signal transducer and activator of transcription 1 (STAT1)-mediated cytokine signaling. Recently, it was found that anti-double-stranded DNA (dsDNA) IgG induces the synthesis of profibrotic cytokines by renal cells. To explore the potential effect of anti-dsDNA IgG on SOCS1-mediated renal fibrosis, kidney tissues were collected from patients with lupus nephritis (LN) as well as MRL/lpr lupus-prone mice...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28619748/pore-polarity-and-charge-determine-differential-block-of-kir1-1-and-kir7-1-potassium-channels-by-the-small-molecule-inhibitor-vu590
#4
Sujay Kharade, Jonathan Sheehan, Eric Figueroa, Jens Meiler, Jerod Denton
VU590 was the first publicly disclosed, sub-micromolar-affinity (IC50=0.2 µM), small-molecule inhibitor of the inward rectifier potassium (Kir) channel, Kir1.1, an emerging diuretic target for the treatment of hypertension. VU590 also inhibits Kir7.1, albeit with 40-fold lower potency (IC50~8 µM), and has been used as a Kir7.1 tool compound to uncover new roles of the channel in regulation of myometrial contractility and melanocortin signaling in the brain. Here, we employed molecular modeling, site-directed mutagenesis, and patch clamp electrophysiology to elucidate the molecular mechanisms underlying inhibition of Kir1...
June 15, 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/28615682/improved-retinal-function-in-rcs-rats-after-suppressing-the-over-activation-of-mglur5
#5
Jiaman Dai, Yan Fu, Yuxiao Zeng, Shiying Li, Zheng Qin Yin
Müller cells maintain retinal synaptic homeostasis by taking up glutamate from the synaptic cleft and transporting glutamine back to the neurons. To study the interaction between Müller cells and photoreceptors, we injected either DL-α-aminoadipate or L-methionine sulfoximine-both inhibitors of glutamine synthetase-subretinally in rats. Following injection, the a-wave of the electroretinogram (ERG) was attenuated, and metabotropic glutamate receptor 5 (mGluR5) was activated. Selective antagonism of mGluR5 by 2-methyl-6-(phenylethynyl)-pyridine increased the ERG a-wave amplitude and also increased rhodopsin expression...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28613412/myoendothelial-coupling-through-cx40-contributes-to-edh-induced-vasodilation-in-murine-renal-arteries-evidence-from-experiments-and-modelling
#6
Jens Christian Brasen, Cor de Wit, Charlotte Mehlin Sorensen
Regulation of renal vascular resistance plays a major role in controlling arterial blood pressure. The endothelium participates in this regulation as endothelial derived hyperpolarization plays a significant role in smaller renal arteries and arterioles but the exact mechanisms are still unknown AIM: to investigate the role of vascular gap junctions and potassium channels in the renal endothelial derived hyperpolarization. METHODS: in interlobar arteries from wild-type and connexin40 knock-out mice we assessed the role of calcium activated small (SK) and intermediate (IK) conductance potassium channels...
June 14, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28611767/natural-killer-defective-maturation-is-associated-with-adverse-clinical-outcome-in-patients-with-acute-myeloid-leukemia
#7
Anne-Sophie Chretien, Cyril Fauriat, Florence Orlanducci, Claire Galseran, Jerome Rey, Gaelle Bouvier Borg, Emmanuel Gautherot, Samuel Granjeaud, Jean-François Hamel-Broza, Clemence Demerle, Norbert Ifrah, Catherine Lacombe, Pascale Cornillet-Lefebvre, Jacques Delaunay, Antoine Toubert, Emilie Gregori, Herve Luche, Marie Malissen, Christine Arnoulet, Jacques A Nunes, Norbert Vey, Daniel Olive
Accumulating evidence highlights natural killer (NK) cell parameters as potential prognostic factors in cancer patients, which provides a strong rationale for developing therapeutic strategies aiming at restoring NK cell. However, reaching this point warrants better characterization of tumor-induced NK cell alterations. Our group recently reported heterogeneous NK maturation in acute myeloid leukemia (AML) patients. However, the clinical significance of such observations remained to be assessed on a larger cohort of patients...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28603523/kir3ds1-mediated-recognition-of-hla-b51-modulation-of-kir3ds1-responsiveness-by-self-hla-b-allotypes-and-effect-on-nk-cell-licensing
#8
Simona Carlomagno, Michela Falco, Maria Bono, Claudia Alicata, Lucia Garbarino, Michela Mazzocco, Lorenzo Moretta, Alessandro Moretta, Simona Sivori
Several studies described an association between killer-cell immunoglobulin-like receptor (KIR)/HLA gene combinations and clinical outcomes in various diseases. In particular, an important combined role for KIR3DS1 and HLA-B Bw4-I80 in controlling viral infections and a higher protection against leukemic relapses in donor equipped with activating KIRs in haplo-HSCT has been described. Here, we show that KIR3DS1 mediates positive signals upon recognition of HLA-B*51 (Bw4-I80) surface molecules on target cells and that this activation occurs only in Bw4-I80(neg) individuals, including those carrying particular KIR/HLA combination settings...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28600190/understanding-the-checkpoint-blockade-in-lung-cancer-immunotherapy
#9
REVIEW
Maria G Dal Bello, Angela Alama, Simona Coco, Irene Vanni, Francesco Grossi
Immunotherapies have changed the treatment strategy of some types of tumor including melanoma and, more recently, non-small-cell lung cancer (NSCLC). Immune checkpoints are crucial for the maintenance of self-tolerance and it is known that some tumors use checkpoint systems to evade antitumor immune response. The treatment of advanced NSCLC by immune-checkpoint blockade targeting the PD1/PDL1 and CTLA4 pathways has led to significant clinical benefit either as monotherapy or in combination therapy. Moreover, checkpoint receptors such as LAG3, TIM3 and KIRs are also being investigated as potential immunotherapeutic targets...
June 7, 2017: Drug Discovery Today
https://www.readbyqxmd.com/read/28597918/inflammation-in-the-developing-rat-modulates-astroglial-reactivity-to-seizures-in-the-mature-brain
#10
Zuzanna Setkowicz, Emilia Kosonowska, Krzysztof Janeczko
Astrocytes participate in neuronal development and excitability, and produce factors enhancing or suppressing inflammatory processes occurring due to neurodegenerative diseases, such as epilepsy. Seizures, in turn, trigger the release of inflammatory mediators, causing structural and functional changes in the brain. Therefore, it appears reasonable to determine whether generalized inflammation at developmental periods can affect astrocyte reactivity to epileptic seizures occurring in the adult brain. Lipopolysaccharide (LPS) was injected in 6- or 30-day-old rats (P6 or P30, respectively)...
June 9, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28590059/sympatholytic-effect-of-intravascular-atp-is-independent-of-nitric-oxide-prostaglandins-na-k-atpase-and-kir-channels-in-humans
#11
Christopher M Hearon, Jennifer C Richards, Mathew L Racine, Gary J Luckasen, Dennis G Larson, Michael J Joyner, Frank A Dinenno
Exercise and intravascular ATP elicit vasodilatation that is dependent on activation of inwardly rectifying potassium (KIR ) channels, with a modest reliance on nitric oxide (NO) and prostaglandin (PG) synthesis.  Both exercise and intravascular ATP attenuate sympathetic α-adrenergic vasoconstriction (sympatholysis). However, KIR channels, NO, PGs and Na(+) /K(+) -ATPase activity are not obligatory to observe sympatholysis during exercise. To further determine similarities between exercise and intravascular ATP, we tested the hypothesis that inhibition of KIR channels, NO and PG synthesis, and Na(+) /K(+) -ATPase, would not alter the ability of ATP to blunt α1 -adrenergic vasoconstriction...
June 7, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28586239/entertainment-education-videos-as-a-persuasive-tool-in-the-substance-use-prevention-intervention-keepin-it-real
#12
YoungJu Shin, Michelle Miller-Day, Michael L Hecht, Janice L Krieger
Based on social cognitive theory and narrative engagement theory, the current study examined hypothesized indirect effects of engagement with keepin' it REAL (kiR) curriculum entertainment-education (E-E) videos on youth alcohol use via youth drug offer refusal efficacy. Students in 7th grade (N = 1,464) at 25 public schools in two Midwestern states were randomly assigned to one of the two versions of the kiR curriculum, the kiR urban version and the kiR rural version. Each version had their own set of five culturally-grounded E-E videos depicting communicative skills to refuse drug offers...
June 6, 2017: Health Communication
https://www.readbyqxmd.com/read/28582449/hiv-1-adaptation-to-nk-cell-mediated-immune-pressure
#13
Marjet Elemans, Lies Boelen, Michael Rasmussen, Søren Buus, Becca Asquith
The observation, by Alter et al., of the enrichment of NK cell "escape" variants in individuals carrying certain Killer-cell Immunoglobulin-like Receptor (KIR) genes is compelling evidence that natural killer (NK) cells exert selection pressure on HIV-1. Alter et al hypothesise that variant peptide, in complex with HLA class I molecules binds KIR receptors and either increases NK cell inhibition or decreases NK cell activation compared to wild type peptide thus leading to virus escape from the NK cell response...
June 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28579987/killer-immunoglobulin-like-receptor-allele-determination-using-next-generation-sequencing-technology
#14
Bercelin Maniangou, Nolwenn Legrand, Mehdi Alizadeh, Ulysse Guyet, Catherine Willem, Gaëlle David, Eric Charpentier, Alexandre Walencik, Christelle Retière, Katia Gagne
The impact of natural killer (NK) cell alloreactivity on hematopoietic stem cell transplantation (HSCT) outcome is still debated due to the complexity of graft parameters, HLA class I environment, the nature of killer cell immunoglobulin-like receptor (KIR)/KIR ligand genetic combinations studied, and KIR(+) NK cell repertoire size. KIR genes are known to be polymorphic in terms of gene content, copy number variation, and number of alleles. These allelic polymorphisms may impact both the phenotype and function of KIR(+) NK cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28578004/alterations-of-striatal-indirect-pathway-neurons-precede-motor-deficits-in-two-mouse-models-of-huntington-s-disease
#15
Irene Sebastianutto, Maria Angela Cenci, Tim Fieblinger
Striatal neurons forming the indirect pathway (iSPNs) are particularly vulnerable in Huntington's disease (HD). In this study we set out to investigate morphological and physiological alterations of iSPNs in two mouse models of HD with relatively slow disease progression (long CAG repeat R6/2 and zQ175-KI). Both were crossed with a transgenic mouse line expressing eGFP in iSPNs. Using the open-field and rotarod tests, we first defined two time points in relation to the occurrence of motor deficits in each model...
June 1, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28576831/shifting-the-balance-of-activating-and-inhibitory-natural-killer-receptor-ligands-on-braf-v600e-melanoma-lines-with-vemurafenib
#16
Alexandra Frazao, Marina Colombo, Emmanuelle Fourmentraux-Neves, Meriem Messaoudene, Sylvie Rusakiewicz, Laurence Zitvogel, Eric Vivier, Frederic Vely, Florence Faure, Brigitte Dreno, Houssem Benlalam, Fanny Bouquet, Ariel Savina, Eric Pasmant, Antoine Toubert, Marie Francoise Avril, Anne Caignard
Over 60% of human melanoma tumors bear a mutation in the BRAF gene. The most frequent mutation is a substitution at codon 600 (V600E), leading to a constitutively active BRAF and overactivation of the mitogen-activated protein kinase (MAPK) pathway. Patients harboring mutated BRAF respond to kinase inhibitors such as vemurafenib. However, these responses are transient and relapses are frequent. Melanoma cells are efficiently lysed by activated natural killer (NK) cells. Melanoma cells express several stress-induced ligands that are recognized by activating NK cell receptors...
June 2, 2017: Cancer Immunology Research
https://www.readbyqxmd.com/read/28571758/killer-cell-immunoglobulin-like-receptor-kir-and-human-leukocyte-antigen-hla-class-i-genetic-diversity-in-four-south-african-populations
#17
Nikki L Gentle, Shayne Loubser, Maria Paximadis, Adrian Puren, Caroline T Tiemessen
Killer-cell Immunoglobulin-like Receptor (KIR) and Human Leukocyte Antigen (HLA) genotypes vary considerably between individuals and populations due to KIR/HLA allelic variation and variable haplotype configurations of KIR. HLA mediate natural killer cell activity by serving as KIR ligands. KIR/HLA polymorphisms associate with both disease susceptibility and severity. We determined the frequencies of KIR, KIR genotypes and KIR-HLA combinations in 364 healthy individuals from four South African populations. Study participants included black African (n=167), Caucasian (n=97), Mixed ancestry (n=50) and Indian (n=50) individuals...
May 29, 2017: Human Immunology
https://www.readbyqxmd.com/read/28569259/revealing-complete-complex-kir-haplotypes-phased-by-long-read-sequencing-technology
#18
D Roe, C Vierra-Green, C-W Pyo, K Eng, R Hall, R Kuang, S Spellman, S Ranade, D E Geraghty, M Maiers
The killer cell immunoglobulin-like receptor (KIR) region of human chromosome 19 contains up to 16 genes for natural killer (NK) cell receptors that recognize human leukocyte antigen (HLA)/peptide complexes and other ligands. The KIR proteins fulfill functional roles in infections, pregnancy, autoimmune diseases and transplantation. However, their characterization remains a constant challenge. Not only are the genes highly homologous due to their recent evolution by tandem duplications, but the region is structurally dynamic due to frequent transposon-mediated recombination...
June 1, 2017: Genes and Immunity
https://www.readbyqxmd.com/read/28565743/-distribution-of-donor-specific-akir-after-unrelated-allogeneic-hematopoietic-stem-cell-transplantation
#19
H H Zhang, J He, X J Bao, X Hu, M Wang, J Zhang, X J Wu
Objective: To analyze the distribution and proportion of donor-specific activated killer cell immunoglobulin like receptor (aKIR) genes and their clinical application values in unrelated allogeneic hematopoietic stem cell transplantation (allo-HSCT) . Methods: Retrospective analyses of KIR genotyping using polymerase chain reaction with sequence specific primers (PCR-SSP) were performed in 216 pairs of donors and recipients. Results: The frequency of donor-specific KIR genes was 53.7% (116/216) in 216 patients receiving unrelated allo-HSCT, with the frequency of 78...
May 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28559723/endogenous-brucella-endophthalmitis-a-case-report
#20
Merih Oray, Zafer Cebeci, Nur Kir, Banu Turgut Ozturk, Lutfiye Oksuz, Ilknur Tugal-Tutkun
Brucellosis may be associated with a wide range of ophthalmic manifestations including endophthalmitis, which is a sight-threatening condition that needs to be rapidly recognized and treated to avoid permanent visual loss. A 26-year-old female with a 6-month history of vision loss in the left eye was treated with high dose systemic corticosteroids and azathioprine with an initial misdiagnosis elsewhere. A dense vitreous haze with opacities at the posterior hyaloid and a wide area of retinochoroiditis led to the diagnosis of endogenous endophthalmitis at presentation to us...
April 2017: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
keyword
keyword
18839
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"