keyword
MENU ▼
Read by QxMD icon Read
search

Transitional b cell infection

keyword
https://www.readbyqxmd.com/read/28651010/macrophages-but-not-neutrophils-are-critical-for-proliferation-of-burkholderia-cenocepacia-and-ensuing-host-damaging-inflammation
#1
Jennifer Mesureur, Joana R Feliciano, Nelly Wagner, Margarida C Gomes, Lili Zhang, Monica Blanco-Gonzalez, Michiel van der Vaart, David O'Callaghan, Annemarie H Meijer, Annette C Vergunst
Bacteria of the Burkholderia cepacia complex (Bcc) can cause devastating pulmonary infections in cystic fibrosis (CF) patients, yet the precise mechanisms underlying inflammation, recurrent exacerbations and transition from chronic stages to acute infection and septicemia are not known. Bcc bacteria are generally believed to have a predominant extracellular biofilm life style in infected CF lungs, similar to Pseudomonas aeruginosa, but this has been challenged by clinical observations which show Bcc bacteria predominantly in alveolar macrophages...
June 26, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28582758/rheumatoid-arthritis-recent-advances-on-its-etiology-role-of-cytokines-and-pharmacotherapy
#2
REVIEW
Javaid Alam, Ibrahim Jantan, Syed Nasir Abbas Bukhari
An autoimmune disease is defined as a clinical syndrome resulted from an instigation of both T cell and B cell or individually, in the absence of any present infection or any sort of distinguishable cause. Clonal deletion of auto reactive cells remains the central canon of immunology for decades, keeping the role of T cell and B cell aside, which are actually the guards to recognize the entry of foreign body. According to NIH, 23.5 million Americans are all together affected by these diseases. They are rare, but with the exception of RA...
August 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28552321/vital-role-for-cyclophilin-b-cypb-in-asexual-development-dimorphic-transition-and-virulence-of-beauveria-bassiana
#3
Zhen-Jian Chu, Huan-Huan Sun, Sheng-Hua Ying, Ming-Guang Feng
Cyclophilin B (CypB) was previously revealed as one of many putative secretory proteins in the transcriptome of Beauveria bassiana infection to a lepidopteran pest. Here we show a main localization of CypB in hyphal cell walls and septa and its essential role in the in vitro and in vivo asexual cycles of the fungal insect pathogen. Deletion of cypB reduced colony growth by 16-42% on two rich media and 30 scant media with different carbon or nitrogen sources. The deletion mutant suffered a delayed conidiation on a standard medium and a final 47% reduction in conidial yield, accompanied with drastic transcript depression of several key genes required for conidiation and conidial maturation...
May 25, 2017: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/28530155/an-oncolytic-adenovirus-encoding-decorin-and-gm-csf-inhibits-tumor-growth-in-a-colorectal-tumor-model-by-targeting-pro-tumorigenic-signals-and-via-immune-activation
#4
Zhao Liu, Yuefeng Yang, Xiaoyan Zhang, Hao Wang, Weidong Xu, Hua Wang, FengJun Xiao, Zhigang Bai, Hongwei Yao, Xuemei Ma, Lan Jin, Chu-Tse Wu, Prem Seth, Zhongtao Zhang, Lisheng Wang
In advanced and metastatic stages of colorectal cancer (CRC), reduced sensitivity to conventional strategies is still a major obstacle to successful treatments. Decorin is an important regulator in the development and progression of various cancers. To examine if CRC patients have altered decorin levels, expression of decorin and its target genes, Met and vascular endothelial growth factor A (VEGFA) were analyzed in their tumors. Compared to normal tissues, decorin expression was reduced in CRC patients' tumors, while, there were increased Met and VEGFA levels...
May 20, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/28524628/myenteric-neuroprotective-role-of-aspirin-in-acute-and-chronic-experimental-infections-with-trypanosoma-cruzi
#5
J Y Oda, M O Belém, T M Carlos, R Gouveia, B F C Luchetti, N M Moreira, C L Massocatto, S M Araújo, D M G Sant Ana, N C Buttow, P Pinge-Filho, E J A Araújo
BACKGROUND: Experimental and clinical studies have shown that myenteric neuron cell death during infection with Trypanosoma cruzi mainly occurs in the esophagus and colon, resulting in megaesophagus and megacolon, respectively. Evidence suggests that the cyclooxygenase enzyme (COX) is involved in the T. cruzi invasion process. The use of low-dose aspirin (ASA), a COX-1/COX-2 inhibitor, has been shown to reduce infection with T. cruzi. Therefore, in this study, we evaluated the effects of treatment with low-dose ASA on myenteric colonic neurons during murine infection with T...
May 19, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28505405/structural-basis-for-xenosiderophore-utilization-by-the-human-pathogen-staphylococcus-aureus
#6
Nathaniel P Endicott, Eries Lee, Timothy A Wencewicz
Staphylococcus aureus produces a cocktail of metallophores (staphylopine, staphyloferrin A, and staphyloferrin B) to scavenge transition metals during infection of a host. In addition, S. aureus displays the extracellular surface lipoproteins FhuD1 and FhuD2 along with the ABC transporter complex FhuCBG to facilitate the use of hydroxamate xenosiderophores such as desferrioxamine B (DFOB) for iron acquisition. DFOB is used as a chelation therapy to treat human iron overload diseases and has been linked to an increased risk of S...
May 30, 2017: ACS Infectious Diseases
https://www.readbyqxmd.com/read/28492809/serum-microrna-30c-levels-are-correlated-with-disease-progression-in-xinjiang-uygur-patients-with-chronic-hepatitis-b
#7
J Zhang, J Ma, H Wang, L Guo, J Li
We aimed to investigate the potential role and mechanism of microRNA-30c (miR-30c) in the pathological development of chronic hepatitis B (CHB). The serum levels of miR-30c in hepatitis B virus (HBV) carrier Xinjiang Uygur patients with inactive, low-replicative, high-replicative and HBe antigen-positive CHB were investigated. HepG2 cells were co-transfected with pHBV1.3 and miR-30c mimic or inhibitor or scramble RNA. The effects of miR-30c dysregulation on HBV replication and gene expression, cell proliferation and cell cycle were then investigated...
May 4, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28476157/microglia-amplify-inflammatory-activation-of-astrocytes-in-manganese-neurotoxicity
#8
Kelly S Kirkley, Katriana A Popichak, Maryam F Afzali, Marie E Legare, Ronald B Tjalkens
BACKGROUND: As the primary immune response cell in the central nervous system, microglia constantly monitor the microenvironment and respond rapidly to stress, infection, and injury, making them important modulators of neuroinflammatory responses. In diseases such as Parkinson's disease, Alzheimer's disease, multiple sclerosis, and human immunodeficiency virus-induced dementia, activation of microglia precedes astrogliosis and overt neuronal loss. Although microgliosis is implicated in manganese (Mn) neurotoxicity, the role of microglia and glial crosstalk in Mn-induced neurodegeneration is poorly understood...
May 5, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28431528/diagnostic-performance-of-the-urinary-canine-calgranulins-in-dogs-with-lower-urinary-or-urogenital-tract-carcinoma
#9
Romy M Heilmann, Elizabeth A McNiel, Niels Grützner, David J Lanerie, Jan S Suchodolski, Jörg M Steiner
BACKGROUND: Onset of canine transitional cell carcinoma (TCC) and prostatic carcinoma (PCA) is usually insidious with dogs presenting at an advanced stage of the disease. A biomarker that can facilitate early detection of TCC/PCA and improve patient survival would be useful. S100A8/A9 (calgranulin A/B or calprotectin) and S100A12 (calgranulin C) are expressed by cells of the innate immune system and are associated with several inflammatory disorders. S100A8/A9 is also expressed by epithelial cells after malignant transformation and is involved in the regulation of cell proliferation and metastasis...
April 21, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28425914/epstein-barr-virus-ensures-b-cell-survival-by-uniquely-modulating-apoptosis-at-early-and-late-times-after-infection
#10
Alexander M Price, Joanne Dai, Quentin Bazot, Luv Patel, Pavel A Nikitin, Reza Djavadian, Peter S Winter, Cristina A Salinas, Ashley Perkins Barry, Kris C Wood, Eric C Johannsen, Anthony Letai, Martin J Allday, Micah A Luftig
Latent Epstein-Barr virus (EBV) infection is causally linked to several human cancers. EBV expresses viral oncogenes that promote cell growth and inhibit the apoptotic response to uncontrolled proliferation. The EBV oncoprotein LMP1 constitutively activates NFκB and is critical for survival of EBV-immortalized B cells. However, during early infection EBV induces rapid B cell proliferation with low levels of LMP1 and little apoptosis. Therefore, we sought to define the mechanism of survival in the absence of LMP1/NFκB early after infection...
April 20, 2017: ELife
https://www.readbyqxmd.com/read/28420878/synergistic-antimicrobial-effects-of-silver-transition-metal-combinatorial-treatments
#11
Javier A Garza-Cervantes, Arturo Chávez-Reyes, Elena C Castillo, Gerardo García-Rivas, Oscar Antonio Ortega-Rivera, Eva Salinas, Margarita Ortiz-Martínez, Sara Leticia Gómez-Flores, Jorge A Peña-Martínez, Alan Pepi-Molina, Mario T Treviño-González, Xristo Zarate, María Elena Cantú-Cárdenas, Carlos Enrique Escarcega-Gonzalez, J Rubén Morones-Ramírez
Due to the emergence of multi-drug resistant strains, development of novel antibiotics has become a critical issue. One promising approach is the use of transition metals, since they exhibit rapid and significant toxicity, at low concentrations, in prokaryotic cells. Nevertheless, one main drawback of transition metals is their toxicity in eukaryotic cells. Here, we show that the barriers to use them as therapeutic agents could be mitigated by combining them with silver. We demonstrate that synergism of combinatorial treatments (Silver/transition metals, including Zn, Co, Cd, Ni, and Cu) increases up to 8-fold their antimicrobial effect, when compared to their individual effects, against E...
April 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28413603/hepatitis-b-virus-promotes-cancer-cell-migration-by-downregulating-mir-340-5p-expression-to-induce-stat3-overexpression
#12
Qiushuang Xiong, Shaoshuai Wu, Jingwen Wang, Xianhuang Zeng, Jianwen Chen, Mingcong Wei, Haotong Guan, Chengpeng Fan, Lang Chen, Deyin Guo, Guihong Sun
BACKGROUND: Hepatocellular carcinoma (HCC) is the third leading cause of cancer-related deaths worldwide, and infection with hepatitis B virus (HBV) is a leading cause of HCC. Previous studies have demonstrated that expression of the tumor inhibitor miR-340 is significantly downregulated in HCC tissues compared with normal liver tissues. However, the precise biological role of miR-340-5p in HBV-HCC and its molecular mechanism of action remain unknown. RESULTS: Expression of miR-340-5p was downregulated in HBV-associated HCC liver tissue and HBV-infected cells, facilitating migration of liver cancer cells...
2017: Cell & Bioscience
https://www.readbyqxmd.com/read/28401933/bcl-xl-mediates-ripk3-dependent-necrosis-in-m-tuberculosis-infected-macrophages
#13
X Zhao, N Khan, H Gan, F Tzelepis, T Nishimura, S-Y Park, M Divangahi, H G Remold
Virulent Mycobacterium tuberculosis (Mtb) triggers necrosis in host Mϕ, which is essential for successful pathogenesis in tuberculosis. Here we demonstrate that necrosis of Mtb-infected Mϕ is dependent on the action of the cytosolic Receptor Interacting Protein Kinase 3 (RIPK3) and the mitochondrial Bcl-2 family member protein B-cell lymphoma-extra large (Bcl-xL). RIPK3-deficient Mϕ are able to better control bacterial growth in vitro and in vivo. Mechanistically, cytosolic RIPK3 translocates to the mitochondria where it promotes necrosis and blocks caspase 8-activation and apoptosis via Bcl-xL...
April 12, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28348056/analysis-of-shigella-flexneri-resistance-biofilm-formation-and-transcriptional-profile-in-response-to-bile-salts
#14
Kourtney P Nickerson, Rachael B Chanin, Jeticia R Sistrunk, David A Rasko, Peter J Fink, Eileen M Barry, James P Nataro, Christina S Faherty
The Shigella species cause millions of cases of watery or bloody diarrhea each year, mostly in children in developing countries. While many aspects of Shigella colonic cell invasion are known, crucial gaps in knowledge regarding how the bacteria survive, transit, and regulate gene expression prior to infection remain. In this study, we define mechanisms of resistance to bile salts and build on previous research highlighting induced virulence in Shigella flexneri strain 2457T following exposure to bile salts...
June 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28344321/broad-spectrum-antiviral-activity-for-paramyxoviruses-is-modulated-by-biophysical-properties-of-fusion-inhibitory-peptides
#15
Cyrille Mathieu, Marcelo T Augusto, Stefan Niewiesk, Branka Horvat, Laura M Palermo, Giuseppina Sanna, Silvia Madeddu, Devra Huey, Miguel A R B Castanho, Matteo Porotto, Nuno C Santos, Anne Moscona
Human paramyxoviruses include global causes of lower respiratory disease like the parainfluenza viruses, as well as agents of lethal encephalitis like Nipah virus. Infection is initiated by viral glycoprotein-mediated fusion between viral and host cell membranes. Paramyxovirus viral fusion proteins (F) insert into the target cell membrane, and form a transient intermediate that pulls the viral and cell membranes together as two heptad-repeat regions refold to form a six-helix bundle structure that can be specifically targeted by fusion-inhibitory peptides...
March 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28343069/linc00152-promotes-cancer-progression-in-hepatitis-b-virus-associated-hepatocellular-carcinoma
#16
Xin Deng, Xiao Fang Zhao, Xing Qiu Liang, Ran Chen, Yi Feng Pan, Jian Liang
BACKGROUND: The X protein (HBx) plays as a key role in hepatocarcinogenesis associated with hepatitis B virus (HBV) infections. The study aimed to figure out the role of Linc00152 in hepatocellular carcinoma (HCC) and the association between the expression levels of Linc00152 and HBx. METHODS: QRT-PCR assays were applied to analyzed the expression levels of Linc00152 and HBx. Kaplan-Meier survival curve was performed to identify the association between LINC00152 and the over survival time (OS) in HCC patients...
June 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28331088/bst-2-expression-modulates-small-cd4-mimetic-sensitization-of-hiv-1-infected-cells-to-antibody-dependent-cellular-cytotoxicity
#17
Jonathan Richard, Jérémie Prévost, Benjamin von Bredow, Shilei Ding, Nathalie Brassard, Halima Medjahed, Mathieu Coutu, Bruno Melillo, Frédéric Bibollet-Ruche, Beatrice H Hahn, Daniel E Kaufmann, Amos B Smith, Joseph Sodroski, Daniel Sauter, Frank Kirchhoff, Katrina Gee, Stuart J Neil, David T Evans, Andrés Finzi
Antibodies recognizing conserved CD4-induced (CD4i) epitopes on human immunodeficiency virus type 1 (HIV-1) Env and able to mediate antibody-dependent cellular cytotoxicity (ADCC) have been shown to be present in sera from most HIV-1-infected individuals. These antibodies preferentially recognize Env in its CD4-bound conformation. CD4 downregulation by Nef and Vpu dramatically reduces exposure of CD4i HIV-1 Env epitopes and therefore reduce the susceptibility of HIV-1-infected cells to ADCC mediated by HIV-positive (HIV+) sera...
June 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28317026/toxoplasma-gondii-ap2ix-4-regulates-gene-expression-during-bradyzoite-development
#18
Sherri Huang, Michael J Holmes, Joshua B Radke, Dong-Pyo Hong, Ting-Kai Liu, Michael W White, William J Sullivan
Toxoplasma gondii is a protozoan parasite of great importance to human and animal health. In the host, this obligate intracellular parasite persists as a tissue cyst that is imperceptible to the immune response and unaffected by current therapies. The tissue cysts facilitate transmission through predation and give rise to chronic cycles of toxoplasmosis in immunocompromised patients. Transcriptional changes accompany conversion of the rapidly replicating tachyzoites into the encysted bradyzoites, and yet the mechanisms underlying these alterations in gene expression are not well defined...
March 2017: MSphere
https://www.readbyqxmd.com/read/28303104/mathematical-modeling-of-streptococcus-pneumoniae-colonization-invasive-infection-and-treatment
#19
Elisa Domínguez-Hüttinger, Neville J Boon, Thomas B Clarke, Reiko J Tanaka
Streptococcus pneumoniae (Sp) is a commensal bacterium that normally resides on the upper airway epithelium without causing infection. However, factors such as co-infection with influenza virus can impair the complex Sp-host interactions and the subsequent development of many life-threatening infectious and inflammatory diseases, including pneumonia, meningitis or even sepsis. With the increased threat of Sp infection due to the emergence of new antibiotic resistant Sp strains, there is an urgent need for better treatment strategies that effectively prevent progression of disease triggered by Sp infection, minimizing the use of antibiotics...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28300209/localizer-subcellular-localization-prediction-of-both-plant-and-effector-proteins-in-the-plant-cell
#20
Jana Sperschneider, Ann-Maree Catanzariti, Kathleen DeBoer, Benjamin Petre, Donald M Gardiner, Karam B Singh, Peter N Dodds, Jennifer M Taylor
Pathogens secrete effector proteins and many operate inside plant cells to enable infection. Some effectors have been found to enter subcellular compartments by mimicking host targeting sequences. Although many computational methods exist to predict plant protein subcellular localization, they perform poorly for effectors. We introduce LOCALIZER for predicting plant and effector protein localization to chloroplasts, mitochondria, and nuclei. LOCALIZER shows greater prediction accuracy for chloroplast and mitochondrial targeting compared to other methods for 652 plant proteins...
March 16, 2017: Scientific Reports
keyword
keyword
66865
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"