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Jing Qiu, Min Wang, Jun Zhang, Qing Cai, Dan Lu, Yansong Li, Yushu Dong, Tianzhi Zhao, Huisheng Chen
Neuroinflammation remains the primary cause of morbidity and mortality in stroke-induced secondary brain injury. The NOD-like receptor pyrin 3 (NLRP3) inflammasome is involved in diverse inflammatory diseases, including cerebral ischemia, and is thus considered an effective therapeutic target. In the present study, we investigated the neuroprotection of Sinomenine (SINO), a potent natural anti-apoptotic and anti-inflammatory molecule, against cerebral ischemia in a mouse model of middle cerebral artery occlusion (MCAO) in vivo and in an oxygen glucose deprivation (OGD)-treated astrocytes/microglia model in vitro...
October 18, 2016: International Immunopharmacology
Jill Moser, Joris van Ark, Marcory C van Dijk, Dale L Greiner, Leonard D Shultz, Harry van Goor, Jan-Luuk Hillebrands
Percutaneous coronary intervention is widely adopted to treat patients with coronary artery disease. However, restenosis remains an unsolved clinical problem after vascular interventions. The role of the systemic and local immune response in the development of restenosis is not fully understood. Hence, the aim of the current study was to investigate the role of the human immune system on subsequent neointima formation elicited by vascular injury in a humanized mouse model. Immunodeficient NOD.Cg-Prkdc(scid)IL2rg(tm1Wjl)(NSG) mice were reconstituted with human (h)PBMCs immediately after both carotid wire and femoral cuff injury were induced in order to identify how differences in the severity of injury influenced endothelial regeneration, neointima formation, and homing of human inflammatory and progenitor cells...
October 19, 2016: Scientific Reports
Dennis Wang, Nhu-An Pham, Jiefei Tong, Shingo Sakashita, Ghassan Allo, Lucia Kim, Naoki Yanagawa, Vibha Raghavan, Yuhong Wei, Christine To, Quang M Trinh, Maud H W Starmans, Michelle A Chan-Seng-Yue, Dianne Chadwick, Lei Li, Chang-Qi Zhu, Ni Liu, Ming Li, Sharon Lee, Vladimir Ignatchenko, Dan Strumpf, Paul Taylor, Nadeem Moghal, Geoffrey Liu, Paul C Boutros, Thomas Kislinger, Melania Pintilie, Igor Jurisica, Frances A Shepherd, John D McPherson, Lakshmi Muthuswamy, Michael F Moran, Ming-Sound Tsao
Availability of lung cancer models that closely mimic human tumors remains a significant gap in cancer research, as tumor cell lines and mouse models may not recapitulate the spectrum of lung cancer heterogeneity seen in patients. We aimed to establish a patient-derived tumor xenograft (PDX) resource from surgically resected non-small cell lung cancer (NSCLC). Fresh tumor tissue from surgical resection was implanted and grown in the subcutaneous pocket of non-obese severe combined immune deficient (NOD SCID) gamma mice...
October 17, 2016: International Journal of Cancer. Journal International du Cancer
Olivier Huet, Raelene J Pickering, Chris Tikellis, Celine Latouche, Fenella Long, Bronwyn Kingwell, Bryan Dickinson, Chris J Chang, Seth Masters, Fabienne Mackay, Mark E Cooper, Judy B de Haan
OBJECTIVES: To study the effect of a lack of antioxidant defenses during lethal pneumonia induced by Klebsiella pneumonia, compared to wild-type mice. SETTING: Laboratory experiments. SUBJECTS: C57Bl6 and glutathione peroxidase 1 knockout mice. INTERVENTION: Murine acute pneumonia model induced by Klebsiella pneumonia. MEASUREMENTS AND MAIN RESULTS: We show here that despite a lack of one of the major antioxidant defense enzymes, glutathione peroxidase 1 knockout mice are protected during lethal pneumonia induced by Klebsiella pneumonia, compared to wild-type mice...
October 3, 2016: Critical Care Medicine
Claire Le Manach, Aloysius T Nchinda, Tanya Paquet, Diego Gonzalez Cabrera, Yassir Younis Adam, Ze Han, Sridevi Bashyam, Mohammed Zabiulla, Dale Taylor, Nina Lawrence, Karen L White, Susan A Charman, David Waterson, Michael J Witty, Sergio Wittlin, Mariette E Botha, Sindisiswe H Nondaba, Janette Reader, Lyn-Marie Birkholtz, Maria Belen Jimenez-Diaz, Maria S Martínez-Martínez, Santiago Ferrer-Bazaga, Iñigo Angulo-Barturen, Stephan Meister, Yevgeniya Antonova-Koch, Elizabeth A Winzeler, Leslie J Street, Kelly Chibale
Introduction of water-solubilizing groups on the 5-phenyl ring of a 2-aminopyrazine series led to the identification of highly potent compounds against the blood life-cycle stage of the human malaria parasite Plasmodium falciparum. Several compounds displayed high in vivo efficacy in two different mouse models for malaria, P. berghei-infected mice and P. falciparum-infected NOD-scid IL-2Rγnull mice. One of the frontrunners, compound 3, was identified to also have good pharmacokinetics, and additionally, very potent activity against the liver and gametocyte parasite life-cycle stages...
October 17, 2016: Journal of Medicinal Chemistry
Chantal Kuhn, Rafael M Rezende, Andre Pires da Cunha, Fabrice Valette, Francisco J Quintana, Lucienne Chatenoud, Howard L Weiner
CD3-specific monoclonal antibody (mAb) treats autoimmune disease in animal models and has shown promise in clinical trials of type 1 diabetes. Whereas intravenous administration of CD3-specific mAb acts primarily by transient depletion of activated effector T cells, oral CD3-specific mAb acts primarily by the induction Tregs. We investigated whether oral CD3-specific mAb inhibits disease in non obese diabetic (NOD) mice that spontaneously develop autoimmune diabetes, closely resembling human type 1 diabetes...
October 10, 2016: Journal of Autoimmunity
Angèle Nalbandian, Arif A Khan, Ruchi Srivastava, Katrina J Llewellyn, Baichang Tan, Nora Shukr, Yasmin Fazli, Virginia E Kimonis, Lbachir BenMohamed
Aberrant activation of the NOD-like receptor (NLR) family, pyrin domain-containing protein 3 (NLRP3) inflammasome, triggers a pathogenic inflammatory response in many inherited neurodegenerative disorders. Inflammation has recently been associated with valosin-containing protein (VCP)-associated diseases, caused by missense mutations in the VCP gene. This prompted us to investigate whether NLRP3 inflammasome plays a role in VCP-associated diseases, which classically affects the muscles, bones, and brain. In this report, we demonstrate (i) an elevated activation of the NLRP3 inflammasome in VCP myoblasts, derived from induced pluripotent stem cells (iPSCs) of VCP patients, which was significantly decreased following in vitro treatment with the MCC950, a potent and specific inhibitor of NLRP3 inflammasome; (ii) a significant increase in the expression of NLRP3, caspase 1, IL-1β, and IL-18 in the quadriceps muscles of VCP(R155H/+) heterozygote mice, an experimental mouse model that has many clinical features of human VCP-associated myopathy; (iii) a significant increase of number of IL-1β((+))F4/80((+))Ly6C((+)) inflammatory macrophages that infiltrate the muscles of VCP(R155H/+) mice; (iv) NLRP3 inflammasome activation and accumulation IL-1β((+))F4/80((+))Ly6C((+)) macrophages positively correlated with high expression of TDP-43 and p62/SQSTM1 markers of VCP pathology in damaged muscle; and (v) treatment of VCP(R155H/+) mice with MCC950 inhibitor suppressed activation of NLRP3 inflammasome, reduced the F4/80((+))Ly6C((+))IL-1β((+)) macrophage infiltrates in the muscle, and significantly ameliorated muscle strength...
October 11, 2016: Inflammation
MeiJuan Song, Qi Lv, XiuWei Zhang, Juan Cao, ShuLi Sun, PeiXin Xiao, ShiKe Hou, Hui Ding, ZiQuan Liu, WenLong Dong, JinQiang Wang, Xue Wang, ZhiGuang Sun, Man Tian, HaoJun Fan
Multiple preclinical evidences have supported the potential value of mesenchymal stem cells (MSCs) for treatment of acute lung injury (ALI). However, few studies focus on the dynamic tropism of MSCs in animals with acute lung injury. In this study, we track systemically transplanted human bone marrow-derived mesenchymal stem cells (hBMSCs) in NOD/SCID mice with smoke inhalation injury (SII) through bioluminescence imaging (BLI). The results showed that hBMSCs systemically delivered into healthy NOD/SCID mouse initially reside in the lungs and then partially translocate to the abdomen after 24 h...
2016: Stem Cells International
Honghai Xia, Jun Cao, Qing Li, Yang Lv, Weidong Jia, Weihua Ren, Qingyu Cheng, Xiaoyuan Song, Geliang Xu
The recent identification of "Side Population" (SP) cells in a number of unrelated human cancers has renewed interests in the hypothesis of cancer stem cells. Here we isolated SP cells from HepG2 cells and 18 of the 21 fresh hepatocellular carcinoma (HCC) tissue samples. These SP cells have higher abilities of forming spheroids, invasion and migration. Tumors could generate only from SP, not non-SP (NSP), cells in a low dose of subcutaneous injection to the NOD/SCID mice (5 × 10(2) cells/mouse). The mRNA microarray analysis of the SP vs...
October 11, 2016: Scientific Reports
Jie Xu, Wu Zhang, Xiao-Jing Yan, Xue-Qiu Lin, Wei Li, Jian-Qing Mi, Jun-Min Li, Jiang Zhu, Zhu Chen, Sai-Juan Chen
BACKGROUND: DNMT3A mutations are frequently discovered in acute myeloid leukemia (AML), associated with poor outcome. Recently, a relapse case report of AML extramedullary disease has showed that AML cells harboring DNMT3A variation were detected in the cerebral spinal fluid. However, whether a causal relationship exists between DNMT3A mutation (D3Amut) and extramedullary infiltration (EMI) is unclear. METHODS: We took advantage of DNMT3A (R882C) mutation-carrying AML cell strain, that is, OCI-AML3, assessing its migration ability in vitro and in vivo...
October 10, 2016: Journal of Hematology & Oncology
Elisabeth Schrumpf, Martin Kummen, Laura Valestrand, Thomas U Greiner, Kristian Holm, Velmurugesan Arulampalam, Henrik M Reims, John Baines, Fredrik Bäckhed, Tom H Karlsen, Richard S Blumberg, Johannes R Hov, Espen Melum
BACKGROUND & AIMS: A strong association between human inflammatory biliary diseases and gut inflammation has led to the hypothesis that gut microbes and lymphocytes activated in the intestine play a role in biliary inflammation. The NOD.c3c4 mouse model develops spontaneous biliary inflammation in extra- and intra-hepatic bile ducts. We aimed to clarify the role of the gut microbiota in the biliary disease of NOD.c3c4 mice. METHODS: We sampled cecal content and mucosa from conventionally raised (CONV-R) NOD...
October 5, 2016: Journal of Hepatology
Diamanda Rigas, Gavin Lewis, Jennifer L Aron, Bowen Wang, Homayon Banie, Ishwarya Sankaranarayanan, Lauriane Galle-Treger, Hadi Maazi, Richard Lo, Gordon J Freeman, Arlene H Sharpe, Pejman Soroosh, Omid Akbari
BACKGROUND: Atopic diseases including asthma exacerbate type 2 immune responses and involve a number of immune cell types, including regulatory T cells (Tregs) and the emerging group 2 innate lymphoid cells (ILC2s). While ILC2s are potent producers of type 2 cytokines, the regulation of ILC2 activation and function is not well understood. OBJECTIVE: In the present study, we evaluate for the first time how Tregs interact with pulmonary ILC2s and control their function...
October 4, 2016: Journal of Allergy and Clinical Immunology
Javier A Carrero, Stephen T Ferris, Emil R Unanue
Islets of Langerhans of all species harbor a small number of resident macrophages. These macrophages are found since birth, do not exchange with blood monocytes, and are maintained by a low level of replication. Under steady state conditions, the islet macrophages are in an activated state. Islet macrophages have an important homeostatic role in islet physiology. At the start of the autoimmune process in the NOD mouse, a small number of CD103+ dendritic cells (DC) are found at about the same time that CD4+ T cells also appear in islets...
October 3, 2016: Current Opinion in Immunology
Hiroko Inoue, Atsuhiro Kishimoto, Ryoko Ushikoshi-Nakayama, Ayaka Hasaka, Ayako Takahashi, Koufuchi Ryo, Takashi Muramatsu, Fumio Ide, Kenji Mishima, Ichiro Saito
Resveratrol is a natural polyphenol produced by plants in response to environmental stress. This compound has been shown to have pharmacological effects against a wide range of diseases including neurological, hepatic, cardiovascular and autoimmune conditions. The non-obese diabetic (NOD) mouse, in which loss of lacrimal and salivary gland function occurs, has been studied as an animal model for Sjögren's syndrome. In this study, we confirmed that administration of resveratrol results in increased secretion of saliva in NOD mice...
September 2016: Journal of Clinical Biochemistry and Nutrition
Xia Sun, Xiao Song, Li Zhang, Jian Sun, Xinbing Wei, Liya Meng, Jie An
Nucleotide binding oligomerization domain (NOD)-like receptors (NLRs) are a class of cytoplasmic pattern-recognition receptors with a major role in innate immunity. Fourteen of the twenty-two human NLRs contain a pyrin domain and form the NLRP subfamily (NLRPs). Among NLRPs, NLRP2 is less well-understood in aspects of distribution and functions, especially in central nervous system (CNS). This study was the first to explore the expression of NLRP2 in central nervous system both under normal conditions and in ischemic stroke models...
October 28, 2016: Biochemical and Biophysical Research Communications
C Levy, F Fusil, F Amirache, C Costa, A Girard, D Negre, O Bernadin, G Garaulet, A Rodriguez, N Nair, T Vandendriessche, M Chuah, F-L Cosset, E Verhoeyen
BACKGROUND: B cells are attractive targets for gene therapy of diseases associated with B-cell dysfunction and particularly interesting for immunotherapy. Moreover, B cells are potent protein-secreting cells and can be tolerogenic antigen presenting cells. OBJECTIVE: Evaluation of human B cells for secretion of clotting factors such as factor IX (IX) as possible treatment for hemophilia. METHODS: We tested here for the first time our newly developed baboon envelope pseudotyped lentiviral vectors (BaEV-LVs) for human (h) B-cell transduction followed their adaptive transfer into NSG mouse...
September 29, 2016: Journal of Thrombosis and Haemostasis: JTH
Basile Lebailly, Francina Langa, Christian Boitard, Philip Avner, Ute Christine Rogner
Nonobese diabetic (NOD) mice are a model for type 1 diabetes that displays defects in central immune tolerance, including impairment of thymocyte apoptosis and proliferation. Thymocyte apoptosis is decreased in NOD/Lt mice compared to nondiabetic C3H/HeJ and C57BL/6 mice. Analysis of a set of NOD.C3H and NOD.B6 congenic mouse strains for distal chromosome 6 localizes the phenotype to the 700 kb Idd6.3 interval. Idd6.3 contains the type 1 diabetes candidate gene aryl hydrocarbon receptor nuclear translocator-like 2 (Arntl2), encoding a circadian rhythm-related transcription factor...
September 26, 2016: Mammalian Genome: Official Journal of the International Mammalian Genome Society
Rui Cao, Zhe Meng, Tongzu Liu, Gang Wang, Guofeng Qian, Tingting Cao, Xinyuan Guan, Hancai Dan, Yu Xiao, Xinghuan Wang
Transient receptor potential melastatin 7 (TRPM7) functions as a Mg2+/Ca2+-permeable channel fused with a kinase domain and regulates various physical processes and diseases. However, its effects on pathogenesis of human bladder cancer (BCa) has not been clarified yet. Our microarray analysis has suggested that calcium signaling pathway is connected with bladder cancer via MAPK pathway. Therefore, we aim to investigate the mechanism of TRPM7 in BCa tumorigenesis by using BCa tissues compared with normal bladder epithelium tissues, as well as using distinct BCa cell lines (EJ, 5637 and T24)...
September 20, 2016: Oncotarget
Issei Saitoh, Masahiro Sato, Miki Soda, Emi Inada, Yoko Iwase, Tomoya Murakami, Hayato Ohshima, Haruaki Hayasaki, Hirofumi Noguchi
Type 1 diabetes occurs due to the autoimmune destruction of pancreatic β-cells in islets. Transplantation of islets is a promising option for the treatment of patients with type 1 diabetes that experience hypoglycemic unawareness despite maximal care, but the present shortage of donor islets hampers such transplantation. Transplantation of insulin-producing cells derived from the patients themselves would be one of the most promising approaches to cure type 1 diabetes. Previously, we demonstrated that insulin-producing cells could be produced by transfecting murine pancreatic cells with Yamanaka's reprogramming factors...
2016: PloS One
Viqar Showkat Banday, Kristina Lejon
Although Type 1 diabetes (T1D) is T cell mediated disease in the effector stage, the mechanism behind the initial β cell assault less understood. Metabolomic differences, including elevated levels of glutamic acid, have been observed in T1D patients prior to disease onset, as well as in pre-diabetic non-obese diabetic (NOD) mice. Increased levels of glutamic acid damage both neurons and beta cells, implying that this could contribute to the initial events of T1D pathogenesis. We investigated the underlying genetic factors and consequences of the increased levels of glutamic acid in NOD...
September 21, 2016: Immunology
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