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Complement deficiency

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https://www.readbyqxmd.com/read/29779806/iron-absorption-from-beans-with-different-contents-of-iron-evaluated-by-stable-isotopes
#1
Márcia Varella Morandi Junqueira-Franco, José Eduardo Dutra de Oliveira, Marilia Regini Nutti, Helton Santos Pereira, José Luiz Vianna de Carvalho, Steven A Abrams, Camila Fernanda Cunha Brandão, Júlio Sérgio Marchini
BACKGROUND: The introduction of biofortified foods such as beans with higher iron content may be a useful tool in preventing iron deficiency. The biofortification aims to reach the root of the problem of malnutrition, targets the neediest population, uses embedded distribution mechanisms, is scientifically feasible and effective in terms of cost, and complements other ongoing interventions to control micronutrient deficiency. However, to ensure effectiveness, measurement of the absorption of minerals is essential...
June 2018: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/29771915/inactivation-of-bpsl1039-1040-atp-binding-cassette-transporter-reduces-intracellular-survival-in-macrophages-biofilm-formation-and-virulence-in-the-murine-model-of-burkholderia-pseudomallei-infection
#2
Peechanika Pinweha, Pornpan Pumirat, Jon Cuccui, Niramol Jitprasutwit, Veerachat Muangsombut, Varintip Srinon, Usa Boonyuen, Parameth Thiennimitr, Paiboon Vattanaviboon, Felipe Cia, Sam Willcocks, Gregory J Bancroft, Brendan W Wren, Sunee Korbsrisate
Burkholderia pseudomallei, a gram-negative intracellular bacillus, is the causative agent of a tropical infectious disease called melioidosis. Bacterial ATP-binding cassette (ABC) transporters import and export a variety of molecules across bacterial cell membranes. At present, their significance in B. pseudomallei pathogenesis is poorly understood. We report here characterization of the BPSL1039-1040 ABC transporter. B. pseudomallei cultured in M9 medium supplemented with nitrate, demonstrated that BPSL1039-1040 is involved in nitrate transport for B...
2018: PloS One
https://www.readbyqxmd.com/read/29768183/ndrg1-disruption-alleviates-cisplatin-sodium-glycididazole-induced-dna-damage-response-and-apoptosis-in-ercc1-defective-lung-cancer-cells
#3
Lang He, Kang Liu, Xiaoshan Wang, Hong Chen, Jin Zhou, Xun Wu, Tao Liu, Yongxue Yang, Xuemei Yang, Dandan Cui, Guiqin Song, Jianguo Lei, Jun Wang
BACKGROUND: Resistance to platinum-based chemotherapy becomes a major obstacle in lung cancer treatment. Compensatory activation of nucleotide excision repair (NER) pathway is the major mechanism accounting for cisplatin-resistance. We aimed at identifying additional regulators in NER-mediated chemoresistance in a hypoxic setting induced by sodium glycididazole (CMNa)-sensitized cisplatin chemotherapy of non-small cell lung cancer (NSCLC). METHODS: We performed an RNA-sequencing (RNA-Seq) analysis to identify the genes whose expression had been differentially regulated in NER-deficient cells that had been treated by cisplatin/CMNa...
May 13, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29767755/protein-phosphatase-2c-ap2c1-interacts-with-and-negatively-regulates-the-function-of-cipk9-under-potassium-deficient-conditions-in-arabidopsis
#4
Amarjeet Singh, Akhilesh K Yadav, Kanwaljeet Kaur, Sibaji K Sanyal, Saroj K Jha, Joel L Fernandes, Pankhuri Sharma, Indu Tokas, Amita Pandey, Sheng Luan, Girdhar K Pandey
Potassium (K+) is a major macronutrient required for plant growth. In response to low- K+ condition, an adaptive mechanism entails activation of the Ca2+ signaling network consisting of calcineurin B-like proteins (CBLs) and their interacting kinases (CIPKs) in plants. The CBL-interacting protein kinase 9 (CIPK9) is previously implicated in low-K+ responses in Arabidopsis thaliana. Here, we report a protein phosphatase 2C (PP2C), AP2C1, as an interactor of CIPK9. Fluorescence resonance energy transfer (FRET), bimolecular fluorescence complementation (BiFC) and co-localization analyses revealed that CIPK9 and AP2C1 interact in the cytoplasm...
May 15, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29764944/recon-dependent-inflammation-in-hepatocytes-enhances-listeria-monocytogenes-cell-to-cell-spread
#5
Adelle P McFarland, Thomas P Burke, Alexie A Carletti, Rochelle C Glover, Hannah Tabakh, Matthew D Welch, Joshua J Woodward
The oxidoreductase RECON is a high-affinity cytosolic sensor of bacterium-derived cyclic dinucleotides (CDNs). CDN binding inhibits RECON's enzymatic activity and subsequently promotes inflammation. In this study, we sought to characterize the effects of RECON on the infection cycle of the intracellular bacterium Listeria monocytogenes , which secretes cyclic di-AMP (c-di-AMP) into the cytosol of infected host cells. Here, we report that during infection of RECON-deficient hepatocytes, which exhibit hyperinflammatory responses, L...
May 15, 2018: MBio
https://www.readbyqxmd.com/read/29764366/phylogenetic-signal-from-rearrangements-in-18-anopheles-species-by-joint-scaffolding-extant-and-ancestral-genomes
#6
Yoann Anselmetti, Wandrille Duchemin, Eric Tannier, Cedric Chauve, Sèverine Bérard
BACKGROUND: Genomes rearrangements carry valuable information for phylogenetic inference or the elucidation of molecular mechanisms of adaptation. However, the detection of genome rearrangements is often hampered by current deficiencies in data and methods: Genomes obtained from short sequence reads have generally very fragmented assemblies, and comparing multiple gene orders generally leads to computationally intractable algorithmic questions. RESULTS: We present a computational method, ADSEQ, which, by combining ancestral gene order reconstruction, comparative scaffolding and de novo scaffolding methods, overcomes these two caveats...
May 9, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29763493/clinical-outcomes-of-vertical-distraction-osteogenesis-for-dental-implantation-a-systematic-review-and-meta-analysis
#7
Kai Zhao, Feng Wang, Wei Huang, Yiqun Wu
PURPOSE: The aim of this study was to evaluate the clinical outcomes of vertical distraction osteogenesis (VDO) for patients with vertically deficient alveolar ridges in terms of (1) the cumulative implant survival rate, (2) bone gain, (3) bone resorption before and after implant insertion, and (4) complications. MATERIALS AND METHODS: An electronic search was conducted via MEDLINE (PubMed), EMBASE, and the Cochrane Library, complemented by manual searches, to identify eligible clinical studies of VDO before dental implantation...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29762484/crispr-cas9-mutagenesis-of-ul21-in-multiple-strains-of-herpes-simplex-virus-reveals-differential-requirements-for-pul21-in-viral-replication
#8
Renée L Finnen, Bruce W Banfield
Studies from multiple laboratories using different strains or species of herpes simplex virus (HSV) with deletions in UL21 have yielded conflicting results regarding the necessity of pUL21 in HSV infection. To resolve this discrepancy, we utilized CRISPR/Cas9 mutagenesis to isolate pUL21 deficient viruses in multiple HSV backgrounds, and performed a side-by-side comparison of the cell-to-cell spread and replication phenotypes of these viruses. These analyses confirmed previous studies implicating the involvement of pUL21 in cell-to-cell spread of HSV...
May 15, 2018: Viruses
https://www.readbyqxmd.com/read/29762476/function-of-the-erfl1a-transcription-factor-in-wheat-responses-to-water-deficiency
#9
Tian Gao, Ge-Zi Li, Chuan-Ren Wang, Jie Dong, Sha-Sha Yuan, Yong-Hua Wang, Guo-Zhang Kang
The APETALA2/ethylene response factor (AP2/ERF) superfamily is involved in the responses of plants to biotic and abiotic stresses; however, the functions and mechanisms of some members of this family in plants are unclear. In our previous study, expression of TaERFL1a , a member of the AP2/ERF family, was remarkably induced in wheat seedlings suffering freezing stress. In this study, we show that its expression was rapidly upregulated in response to salt, cold, and water deficiency, suggesting roles in the responses to abiotic stresses...
May 15, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29760195/neuron-specific-hur-deficient-mice-spontaneously-develop-motor-neuron-disease
#10
Kevin Sun, Xiao Li, Xing Chen, Ying Bai, Gao Zhou, Olga N Kokiko-Cochran, Bruce Lamb, Thomas A Hamilton, Ching-Yi Lin, Yu-Shang Lee, Tomasz Herjan
Human Ag R (HuR) is an RNA binding protein in the ELAVL protein family. To study the neuron-specific function of HuR, we generated inducible, neuron-specific HuR-deficient mice of both sexes. After tamoxifen-induced deletion of HuR, these mice developed a phenotype consisting of poor balance, decreased movement, and decreased strength. They performed significantly worse on the rotarod test compared with littermate control mice, indicating coordination deficiency. Using the grip-strength test, it was also determined that the forelimbs of neuron-specific HuR-deficient mice were much weaker than littermate control mice...
May 14, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29746835/complement-c3-drives-autophagy-dependent-restriction-of-cyto-invasive-bacteria
#11
Matthew T Sorbara, Elisabeth G Foerster, Jessica Tsalikis, Mena Abdel-Nour, Joseph Mangiapane, Imogen Sirluck-Schroeder, Ivan Tattoli, Rob van Dalen, David E Isenman, John R Rohde, Stephen E Girardin, Dana J Philpott
In physiological settings, the complement protein C3 is deposited on all bacteria, including invasive pathogens. However, because experimental host-bacteria systems typically use decomplemented serum to avoid the lytic action of complement, the impact of C3 coating on epithelial cell responses to invasive bacteria remains unexplored. Here, we demonstrate that following invasion, intracellular C3-positive Listeria monocytogenes is targeted by autophagy through a direct C3/ATG16L1 interaction, resulting in autophagy-dependent bacterial growth restriction...
May 9, 2018: Cell Host & Microbe
https://www.readbyqxmd.com/read/29739874/pten-regulates-non-homologous-end-joining-by-epigenetic-induction-of-nhej1-xlf
#12
Parker L Sulkowski, Susan E Scanlon, Sebastian Oeck, Peter M Glazer
DNA double-strand breaks (DSBs) are the most cytotoxic DNA lesions, and up to 90% of DSBs require repair by non-homologous end joining (NHEJ). Functional and genomic analyses of patient-derived melanomas revealed that PTEN loss is associated with NHEJ deficiency. In PTEN-null melanomas PTEN complementation rescued the NHEJ defect; conversely suppression of PTEN compromised NHEJ. Mechanistic studies revealed that PTEN promotes NHEJ through direct induction of expression of XRCC4-like factor (NHEJ1/XLF) which functions in DNA end bridging and ligation...
May 8, 2018: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/29733904/c1qtnf1-attenuates-angiotensin-ii-induced-cardiac-hypertrophy-via-activation-of-the-ampka-pathway
#13
Leiming Wu, Lu Gao, Dianhong Zhang, Rui Yao, Zhen Huang, Binbin Du, Zheng Wang, Lili Xiao, Pengcheng Li, Yapeng Li, Cui Liang, Yanzhou Zhang
RATIONALE: Complement C1q tumor necrosis factor related proteins (C1QTNFs) have been reported to have diverse biological influence on the cardiovascular system. C1QTNF1 is a member of the CTRP superfamily. C1QTNF1 is expressed in the myocardium; however, its function in myocytes has not yet been investigated. OBJECTIVE: To systematically investigate the roles of C1QTNF1 in angiotensin II (Ang II)-induced cardiac hypertrophy. METHODS AND RESULTS: C1QTNF1 knock-out mice were used with the aim of determining the role of C1QTNF1 in cardiac hypertrophy in the adult heart...
May 4, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29731101/pathogenic-and-protective-roles-of-b-cells-and-antibodies-in-patients-with-chronic-rhinosinusitis
#14
REVIEW
Bruce K Tan, Anju T Peters, Robert P Schleimer, Kathryn E Hulse
Chronic rhinosinusitis (CRS) is a chronic inflammatory disease of the nose and sinuses that affects up to 12% of the population in Europe and the United States. This complex disease is likely driven by multiple environmental, genetic, and inflammatory mechanisms, and recent studies suggest that B cells might play a critical role in disease pathogenesis. B cells and their antibodies have undisputed roles in health and disease within the airway mucosae. Deficient or inadequate B-cell responses can lead to susceptibility to infectious disease in the nose, whereas excess antibody production, including autoantibodies, can promote damaging inflammation...
May 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29729385/the-chinese-herbal-formula-zhibai-dihuang-granule-treat-yin-deficiency-heat-syndrome-rats-by-regulating-the-immune-responses
#15
Chang-Ming Liu, Jing Chen, Su Yang, Lian-Gen Mao, Ting-Ting Jiang, Hui-Hui Tu, Zhong-Liang Chen, Yu-Ting Hu, Lin Gan, Zhong-Jie Li, Ji-Cheng Li
ETHNOPHARMACOLOGICAL RELEVANCE: Zhibai Dihuang Granule (ZDG), a traditional Chinese medicine (TCM) made from eight Chinese herbs, has been classically used to treat Yin-deficiency-heat (YDH) syndrome. ZDG is well known with the therapeutic efficacy of nourishing Yin and decreasing internal heat in clinic, but the mechanism of ZDG's therapeutic effect is still not clear. MATERIALS AND METHODS: High doses of triiodothyronine (T3) were given intraperitoneally to induce Hyperthyroid YDH syndrome in SD rats...
May 2, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29729138/quantification-of-human-complement-c2-protein-using-an-automated-turbidimetric-immunoassay
#16
Clare Elizabeth Tange, Bridget Johnson-Brett, Alex Cook, Patrick Stordeur, Fabian Brohet, Stephen Jolles, Rachel Steven, Mark Ponsford, Andrew Roberts, Tariq El-Shanawany, Stephen Harding, Gregg Wallis, Antony Richard Parker
BACKGROUND: The measurement of complement components is clinically useful where a deficiency is suspected, or where excessive activation and consumption are present in disease. C2 deficiency carries an increased risk of developing systemic lupus erythematosus, recurrent infections and atherosclerosis. In this study, we have evaluated The Binding Site's Human Complement C2 SPAPLUS® assay. METHODS: Linearity was tested using 13 sample dilutions covering the standard measuring range...
May 5, 2018: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/29728803/acquired-thrombotic-thrombocytopenic-purpura-with-isolated-cfhr3-1-deletion-rapid-remission-following-complement-blockade
#17
Martin Bitzan, Rawan M Hammad, Arnaud Bonnefoy, Watfa Shahwan Al Dhaheri, Catherine Vézina, Georges-Étienne Rivard
BACKGROUND: Thrombotic thrombocytopenic purpura (TTP) is caused by the abundance of uncleaved ultralarge von Willebrand factor multimers (ULvWF) due to acquired (autoantibody-mediated) or congenital vWF protease ADAMTS13 deficiency. Current treatment recommendations include plasma exchange therapy and immunosuppression for the acquired form and (fresh) frozen plasma for congenital TTP. CASE-DIAGNOSIS/TREATMENT: A previously healthy, 3-year-old boy presented with acute microangiopathic hemolytic anemia, thrombocytopenia, erythrocyturia and mild proteinuria, but normal renal function, and elevated circulating sC5b-9 levels indicating complement activation...
May 4, 2018: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/29728506/abrogation-of-lupus-nephritis-in-somatic-hypermutation-deficient-mrl-lpr-mice
#18
Fengqi Hao, Miaomiao Tian, Yunpeng Feng, Chao Quan, Yixi Chen, Shuai Chen, Min Wei
Systemic lupus erythematosus (SLE) is an autoimmune disease posing threats to multiple organs in the human body. As a typical manifestation of SLE, lupus nephritis is characterized by a series of pathological changes in glomerulus as well as accumulation of pathogenic autoreactive IgG with complement in the kidney that dramatically disrupts renal functions. Activation-induced deaminase (AID), which governs both somatic hypermutation (SHM) and class-switch recombination (CSR), has been shown to be essential for the regulation of SLE...
May 4, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29725647/progressive-iga-nephropathy-is-associated-with-low-circulating-mannan-binding-lectin-associated-serine-protease-3-masp-3-and-increased-glomerular-factor-h-related-protein-5-fhr5-deposition
#19
Nicholas R Medjeral-Thomas, Anne Troldborg, Nicholas Constantinou, Hannah J Lomax-Browne, Annette G Hansen, Michelle Willicombe, Charles D Pusey, H Terence Cook, Steffen Thiel, Matthew C Pickering
Introduction: IgA nephropathy (IgAN) is characterized by glomerular deposition of galactose-deficient IgA1 and complement proteins and leads to renal impairment. Complement deposition through the alternative and lectin activation pathways is associated with renal injury. Methods: To elucidate the contribution of the lectin pathway to IgAN, we measured the 11 plasma lectin pathway components in a well-characterized cohort of patients with IgAN. Results: M-ficolin, L-ficolin, mannan-binding lectin (MBL)-associated serine protease (MASP)-1 and MBL-associated protein (MAp) 19 were increased, whereas plasma MASP-3 levels were decreased in patients with IgAN compared with healthy controls...
March 2018: KI Reports
https://www.readbyqxmd.com/read/29725032/novel-evidence-that-extracellular-nucleotides-and-purinergic-signaling-induce-innate-immunity-mediated-mobilization-of-hematopoietic-stem-progenitor-cells
#20
Mateusz Adamiak, Kamila Bujko, Monika Cymer, Monika Plonka, Talita Glaser, Magda Kucia, Janina Ratajczak, Henning Ulrich, Ahmed Abdel-Latif, Mariusz Z Ratajczak
Pharmacological mobilization of hematopoietic stem progenitor cells (HSPCs) from bone marrow (BM) into peripheral blood (PB) is a result of mobilizing agent-induced "sterile inflammation" in the BM microenvironment due to complement cascade (ComC) activation. Here we provide evidence that ATP, as an extracellular nucleotide secreted in a pannexin-1-dependent manner from BM cells, triggers activation of the ComC and initiates the mobilization process. This process is augmented in a P2X7 receptor-dependent manner, and P2X7-KO mice are poor mobilizers...
March 30, 2018: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
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