keyword
MENU ▼
Read by QxMD icon Read
search

NK

keyword
https://www.readbyqxmd.com/read/28329698/disarming-the-killers-brain-strikes-on-nk-cells
#1
Linda Quatrini, Sophie Ugolini
Brain ischemia induces profound systemic immunosuppression, leading to infectious complications. In this issue of Immunity, Liu et al. (2017) demonstrate that distinct neuroendocrine pathways differentially inhibit natural killer (NK) cell responses in the central nervous system and the periphery after cerebral infarction.
March 21, 2017: Immunity
https://www.readbyqxmd.com/read/28329286/short-course-tlr9-agonist-treatment-impacts-innate-immunity-and-plasma-viremia-in-individuals-with-hiv-infection
#2
Line Vibholm, Mariane H Schleimann, Jesper F Højen, Thomas Benfield, Rasmus Offersen, Katrine Rasmussen, Rikke Olesen, Anders Dige, Jørgen Agnholt, Judith Grau, Maria Buzon, Burghardt Wittig, Mathias Lichterfeld, Andreas Munk Petersen, Xutao Deng, Mohammed Abdel-Mohsen, Satish K Pillai, Sofie Rutsaert, Wim Trypsteen, Ward De Spiegelaere, Linos Vandekerchove, Lars Østergaard, Thomas A Rasmussen, Paul W Denton, Martin Tolstrup, Ole S Søgaard
Background: Treatment with latency reversing agents (LRA) enhances HIV-1 transcription in vivo but only leads to modest reductions in the size of the reservoir, possibly due to insufficient immune-mediated elimination of infected cells. We hypothesized that a single drug molecule - a novel toll-like receptor 9 (TLR9) agonist, MGN1703 - could function as an enhancer of innate immunity and an LRA in vivo. Methods: We conducted a single-arm, open-label study, where 15 virologically suppressed HIV-1 infected individuals on antiretroviral therapy received 60 mg MGN1703 s...
March 9, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28328926/frequency-and-role-of-nkp46-and-nkg2a-in-hepatitis-b-virus-infection
#3
Teppei Yoshioka, Tomohide Tatsumi, Takuya Miyagi, Kaori Mukai, Kumiko Nishio, Akira Nishio, Yoshinobu Yokoyama, Takahiro Suda, Tadashi Kegasawa, Minoru Shigekawa, Hayato Hikita, Ryotaro Sakamori, Tetsuo Takehara
BACKGROUND AND AIM: Natural Killer (NK) cells are involved in the control of viral infection. However, the role of NK cells in chronic hepatitis B (CHB) remains unclear. This study investigated the frequencies and roles of NK cells in CHB, with a focus on activating receptor NKp46 and inhibitory receptor NKG2A. PATIENTS/METHOD: Peripheral blood lymphocytes were obtained from 71 CHB patients and 37 healthy subjects (HS). The expressions of NKp46 and NKG2A were analyzed using flow cytometry...
2017: PloS One
https://www.readbyqxmd.com/read/28328614/a-newborn-with-familial-hemophagocytic-lymphohistiocytosis-complicated-with-transfusion-associated-graft-versus-host-disease
#4
Ahmet Ozdemir, Tamer Gunes, Samuel C C Chiang, Ekrem Unal
Hemophagocytic lymphohistiocytosis (HLH) is characterized by activation of cytotoxic T and natural killer (NK) cells, and macrophages related to a spectrum of hyperinflammatory disorders. The clinical findings mainly include high fever, cytopenia, splenomegaly, phagocytosis, and proliferation of histiocytes in lymphoreticular tissue. To the best of our knowledge, transfusion-associated graft versus host disease (TA-GVHD) in a 13-day old male newborn with HLH is being reported first time in the literature. The aim of this report was to emphasize the importance of blood products irradiation in the prevention of the development of graft versus host disease especially among high-risk subjects such as newborns with HLH...
March 21, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28328098/plasma-exchange-successfully-treated-macrophage-activation-syndrome-in-rheumatoid-factor-positive-polyarticular-juvenile-idiopathic-arthritis-with-combined-pneumonia
#5
Lianjie Shi, Fanlei Hu, Chuanhui Xu, Huaqun Zhu, Di Qie, Chuanjie Yuan, Yuhong Tao, Hanmin Liu
Macrophage activation syndrome (MAS) is one of the serious complications associated with rheumatic diseases, especially systemic juvenile idiopathic arthritis (sJIA). Here we describe a 9-year-old girl with rheumatoid factor (RF)-positive polyarticular JIA, not sJIA, combined with pneumonia who was successfully treated by plasma exchange. She was diagnosed with RF-positive polyarticular JIA based on positive RF and multiple joint swelling and tenderness 3 years ago. She was admitted in our hospital with myalgia for 2 days and a high fever for half a day...
March 22, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28327932/integrated-safety-analysis-of-rolapitant-with-coadministered-drugs-from-phase-ii-iii-trials-an-assessment-of-cyp2d6-or-bcrp-inhibition-by-rolapitant
#6
S Barbour, T Smit, X Wang, D Powers, S Arora, V Kansra, M Aapro, J Herrstedt
Background: Rolapitant, a long-acting neurokinin (NK) 1 receptor antagonist (RA), has demonstrated efficacy in prevention of chemotherapy-induced nausea and vomiting in patients administered moderately or highly emetogenic chemotherapy. Unlike other NK 1 RAs, rolapitant does not inhibit or induce cytochrome P450 (CYP) 3A4, but it does inhibit CYP2D6 and breast cancer resistance protein (BCRP). To analyze potential drug-drug interactions between rolapitant and concomitant medications, this integrated safety analysis of four double-blind, randomized phase II or III studies of rolapitant examined adverse events by use versus non-use of drug substrates of CYP2D6 or BCRP...
February 23, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28327604/chymase-producing-cells-of-the-innate-immune-system-are-required-for-decidual-vascular-remodeling-and-fetal-growth
#7
Nicole Meyer, Katja Woidacki, Martin Knöfler, Gudrun Meinhardt, Désirée Nowak, Philipp Velicky, Jürgen Pollheimer, Ana C Zenclussen
Intrauterine growth restriction (IUGR) is caused by insufficient remodeling of spiral arteries (SAs). The mechanism underlying the relevance of natural killer cells (NKs) and mast cells (MCs) for SA remodeling and its effects on pregnancy outcome are not well understood. We show that NK depletion arrested SA remodeling without affecting pregnancy. MC depletion resulted in abnormally remodeled SAs and IUGR. Combined absence of NKs and MCs substantially affected SA remodeling and impaired fetal growth. We found that α-chymase mast cell protease (Mcpt) 5 mediates apoptosis of uterine smooth muscle cells, a key feature of SA remodeling...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28326171/large-scale-isolation-and-cytotoxicity-of-extracellular-vesicles-derived-from-activated-human-natural-killer-cells
#8
Ambrose Y Jong, Chun-Hua Wu, Jingbo Li, Jianping Sun, Muller Fabbri, Alan S Wayne, Robert C Seeger
Extracellular vesicles (EVs) have been the focus of great interest, as they appear to be involved in numerous important cellular processes. They deliver bioactive macromolecules such as proteins, lipids, and nucleic acids, allowing intercellular communication in multicellular organisms. EVs are secreted by all cell types, including immune cells such as natural killer cells (NK), and they may play important roles in the immune system. Currently, a large-scale procedure to obtain functional NK EVs is lacking, limiting their use clinically...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28326108/secondary-traumatic-stress-and-burnout-of-north-korean-refugees-service-providers
#9
Yeunhee Joyce Kim
OBJECTIVE: The current study investigated the burnout and secondary traumatic stress of service providers for North Korean (NK) refugees based on the conceptual framework of theJob Demands-Resources (JD-R) model of workplace burnout. METHODS: A cross-sectional self-administered survey was conducted with a national sample consisting of all 63 organizations in direct services to North Korean refugees. Of the estimated total number of 230 service providers comprising of social workers, psychotherapists, job counselors and paraprofessional counselors, 179 completed the survey, a 77...
March 2017: Psychiatry Investigation
https://www.readbyqxmd.com/read/28326081/the-smac-mimetic-bv6-improves-nk-cell-mediated-killing-of-rhabdomyosarcoma-cells-by-simultaneously-targeting-tumor-and-effector-cells
#10
Kyra Fischer, Sara Tognarelli, Stefanie Roesler, Cathinka Boedicker, Ralf Schubert, Alexander Steinle, Thomas Klingebiel, Peter Bader, Simone Fulda, Evelyn Ullrich
Rhabdomyosarcoma (RMS), the most common cancer of connective tissues in pediatrics, is often resistant to conventional therapies. One underlying mechanism of this resistance is the overexpression of Inhibitor of Apoptosis (IAP) proteins, leading to a dysfunctional cell death program within tumor cells. Smac mimetics (SM) are small molecules that can reactivate the cell death program by antagonizing IAP proteins and thereby compensating their overexpression. Here, we report that SM sensitize two RMS cell lines (RD and RH30) toward natural killer (NK) cell-mediated killing on the one hand, and increase the cytotoxic potential of NK cells on the other...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28325510/increased-nuclear-localization-of-substance-p-in-human-gastric-tumor-cells
#11
Miguel Muñoz, Marisa Rosso, Andrés Carranza, Rafael Coveñas
Gastric cancer (GC) is an aggressive disease that remains the fourth most common type of cancer and is the second leading cause of cancer-related death worldwide. Treatment of advanced or metastatic GC has seen little progress and median overall survival in this group remains <1 year. It is urgent to investigate new mechanisms to understand GC progression. It is known that substance P (SP), after binding to the neurokinin-1 (NK-1) receptor, elicits GC proliferation; that GC cells and samples express NK-1 receptors; that NK-1 receptor antagonists, in a concentration dependent manner, inhibit the proliferation of GC cells and that these cells die by apoptosis...
March 18, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/28325005/dynamic-modeling-of-apnea-induced-concurrent-variations-in-arterial-blood-pressure-and-cerebral-blood-flow-velocity
#12
Raichel Alex, Rong Zhang, Donald E Watenpaugh, Khosrow Behbehani
Obstructive Sleep Apnea (OSA) is characterized by partial (hypopnea) or complete cessation (apnea) of airflow to the lungs during sleep. It has been previously reported that apnea episodes lead to significant rise in instantaneous blood pressure concomitant with a rise in cerebral blood flow velocity, indicating loss of cerebral autoregulation during the episodes. In this study, we have used Auto Regressive Moving Average model (ARMA (na, nb, nk)) to quantify OSA induced dynamic changes in cerebral blood flow velocity (CBFV) with beat to beat blood pressure (BP) as an input...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324803/leishmania-donovani-resistant-to-ambisome-or-miltefosine-exacerbates-cd58-expression-on-nk-cells-and-promotes-trans-membrane-migration-in-association-with-cd2
#13
Pushkar Shivam, Sarita Kumari, Fauzia Jamal, Vikash Kumar, Manish Kumar, Sanjiva Bimal, Shyam Narayan, Vidya Nand Ravi Das, Krishna Pandey, Anil Kumar Gupta, Pradeep Das, Shubhankar Kumar Singh
Visceral leishmaniasis (VL) is a disease that is associated with compromised immunity and drug un-responsiveness as well as with the emergence of drug resistance in Leishmania donovani (Ld). Ld down-modulates cellular immunity by manipulating signaling agents, including a higher expression of the adhesion molecule CD58. The expression of CD58 and CD2 on natural killer (NK) cells facilitates intercellular adhesion and signaling. The influence of drug-resistant Ld on the expression of CD58 and CD2 was addressed in this study...
March 16, 2017: Cytokine
https://www.readbyqxmd.com/read/28323187/activation-of-cytotoxic-natural-killer-cells-after-aneurysmal-subarachnoid-haemorrhage
#14
Daniel Spitzer, Nina Johanna Spitzer, Monika Deininger, Christian Rainer Wirtz, Ralph König, Timo Burster, Thomas Kapapa
OBJECTIVE: Cell-mediated inflammation is critical in development of cerebrovascular complications after aneurysmal subarachnoid haemorrhage (aSAH). We analysed the course for activated CD16(bright)CD56(dim) cytotoxic NKCSF cells (NK) in cerebrospinal fluid (CSF) of 15 patients. METHODS: Patients were classified by occurrence of cerebral vasospasm and delayed cerebral ischemia. NK were monitored by flow cytometry between day 1 and 14 after haemorrhage. RESULTS: 12 (80%) patients developed CV with a mean day of detection at 3...
March 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28322863/deep-immune-profiling-by-mass-cytometry-links-human-t-and-nk-cell-differentiation-and-cytotoxic-molecule-expression-patterns
#15
Bertram Bengsch, Takuya Ohtani, Ramin Sedaghat Herati, Niels Bovenschen, Kyong-Mi Chang, E John Wherry
The elimination of infected or tumor cells by direct lysis is a key T and NK cell effector function. T and NK cells can kill target cells by coordinated secretion of cytotoxic granules containing one or both pore-forming proteins, perforin and granulysin and combinations of granzyme (Gzm) family effector proteases (in humans: Gzm A, B, K, M and H). Understanding the pattern of expression of cytotoxic molecules and the relationship to different states of T and NK cells may have direct relevance for immune responses in autoimmunity, infectious disease and cancer...
March 17, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28322797/transcriptional-activation-of-the-mica-gene-with-an-engineered-crispr-cas9-system
#16
Kazuma Sekiba, Mari Yamagami, Motoyuki Otsuka, Tatsunori Suzuki, Takahiro Kishikawa, Rei Ishibashi, Motoko Ohno, Masaya Sato, Kazuhiko Koike
Major histocompatibility complex class I polypeptide-related sequence A (MICA) is a prototypical NKG2D ligand. Because immune cells, such as natural killer (NK) cells, recognize virally infected or transformed cells and eliminate them through the interaction between NKG2D receptors on NK cells and NKG2D ligands on pathogenic cells, MICA expression levels are associated with NK cell-mediated immunity. Here, we report that an engineered clustered regularly interspaced short palindromic repeats-Cas9-related complex targeting MICA gene promoter sequences activates transcription of the MICA gene from its endogenous locus...
March 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28322119/epidemiology-of-nasopharyngeal-lymphoma-in-the-united-states-a-population-based-analysis-of-1119-cases
#17
Albert Y Han, Edward C Kuan, Jose E Alonso, Karam W Badran, Maie A St John
Objectives To describe the incidence and determinants of survival of patients with nasopharyngeal lymphoma (NPL) between 1973 and 2012 using the Surveillance, Epidemiology, and End Results (SEER) database. Study Design Retrospective cohort study using a national database. Methods The SEER registry was used to calculate survival trends for patients with NPL between 1973 and 2012. Patient data were then analyzed with respect to histopathology, age, sex, race, histologic subtype, Ann Arbor stage, and whether radiation therapy was given...
March 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28321815/immune-therapy-for-sarcomas
#18
Peter M Anderson
Absolute lymphocyte count (ALC) recovery rapidly occurring at 14 days after start of chemotherapy for osteosarcoma and Ewing sarcoma is a good prognostic factor. Conversely, lymphopenia is associated with significantly decreased sarcoma survival. Clearly, the immune system can contribute towards better survival from sarcoma. This chapter will describe treatment and host factors that influence immune function and how effective local control and systemic interventions of sarcoma therapy can cause inflammation and/or immune suppression but are currently the standard of care...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28321812/optimizing-radiotherapy-with-immunotherapeutic-approaches
#19
Jonathan E Schoenhals, Tijana Skrepnik, Ugur Selek, Maria A Cortez, Ailin Li, James W Welsh
Several factors must be considered to successfully integrate immunotherapy with radiation into clinical practice. One such factor is that concepts arising from preclinical work must be tested in combination with radiation in preclinical models to better understand how combination therapy will work in patients; examples include checkpoint inhibitors, tumor growth factor-beta (TGF-β) inhibitors, and natural killer (NK) cell therapy. Also, many radiation fields and fractionation schedules typically used in radiation therapy had been standardized before the introduction of advanced techniques for radiation planning and delivery that account for changes in tumor size, location, and motion during treatment, as well as uncertainties introduced by variations in patient setup between treatment fractions...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28321811/interleukin-2-old-and-new-approaches-to-enhance-immune-therapeutic-efficacy
#20
Pooja Dhupkar, Nancy Gordon
Interleukin-2 (IL-2) is a very well-known cytokine that has been studied for the past 35 years. It plays a major role in the growth and proliferation of many immune cells such NK and T cells. It is an important immunotherapy cytokine for the treatment of various diseases including cancer. Systemic delivery of IL-2 has shown clinical benefit in renal cell carcinoma and melanoma patients. However, its use has been limited by the numerous toxicities encountered with the systemic delivery. Intravenous IL-2 causes the well-known "capillary leak syndrome," or the leakage of fluid from the circulatory system to the interstitial space resulting in hypotension (low blood pressure), edema, and dyspnea that can lead to circulatory shock and eventually cardiopulmonary collapse and multiple organ failure...
2017: Advances in Experimental Medicine and Biology
keyword
keyword
21999
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"