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https://www.readbyqxmd.com/read/28214973/a-multifunctional-alanine-rich-anti-inflammatory-peptide-bcp61-showed-potent-inhibitory-effects-by-inhibiting-both-nf-%C3%AE%C2%BAb-and-mapk-expression
#1
Yun Hee Choi, Yoon Seok Choi, Young Kyun Kim, Md Saifur Rahman, G C Pradeep, Jin Cheol Yoo, Joo-Won Suh
The purified BCP61 was reported to be a unique low-molecular-weight (MW) anti-microbial peptide because of its non-identical alanine-rich N-terminal sequence. In this study, we investigated the anti-inflammatory effects of BCP61 on induction of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), pro-inflammatory cytokines, nuclear factor-kappa B (NF-κB), and mitogen-activated protein kinases (MAPKs) in lipopolysaccharide (LPS)-stimulated Raw 264.7 cells. The treatment with BCP61, with varying concentrations of 10, 50, and 100 μg/mL, inhibited levels of expression of LPS-induced NF-κB and MAPKs (extracellular signal-related kinases (ERKs), c-Jun NH2-terminal kinase (JNK), and mitogen-activated protein (p38)) as well as production of pro-inflammatory mediators, such as nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor-α (TNF-α), and interleukin-6 (IL-6)...
February 18, 2017: Inflammation
https://www.readbyqxmd.com/read/28214886/adenovirus-vector-harboring-the-hbcag-and-tripeptidyl-peptidase-ii-genes-induces-potent-cellular-immune-responses-in-vivo
#2
Quanhui Tan, Siyuan Ma, Jianjun Hu, Xiaohua Chen, Yongsheng Yu, Zhenghao Tang, Guoqin Zang
BACKGROUND: Chronic hepatitis B virus (HBV) infection is associated with a weak but specific cellular immune response of the host to HBV. Tripeptidyl peptidaseⅡ (TPPⅡ), an intracellular macromolecule and proteolytic enzyme, plays an important complementary and compensatory role for the proteasome during viral protein degradation and major histocompatibility complex class I antigen presentation by inducing a specific cellular immune response in vivo. Based on a previous study, we aimed to explore the role of MHC class I antigen presentation in vivo and the mechanisms that may be involved...
January 27, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214885/signaling-pathway-for-endothelin-1-and-phenylephrine-induced-camp-response-element-binding-protein-activation-in-rat-ventricular-myocytes-role-of-inositol-1-4-5-trisphosphate-receptors-and-camkii
#3
Krishna P Subedi, Min-Jeong Son, Bojjibabu Chidipi, Seong-Woo Kim, Jun Wang, Kyeong-Hee Kim, Sun-Hee Woo, Joon-Chul Kim
BACKGROUND/AIMS: Endothelin-1 (ET-1) and the α<Sub>1</Sub>-adrenoceptor agonist phenylephrine (PE) activate cAMP response element binding protein (CREB), a transcription factor implicated in cardiac hypertrophy. The signaling pathway involved in CREB activation by these hypertrophic stimuli is poorly understood. We examined signaling pathways for ET-1- or PE-induced cardiac CREB activation. METHODS: Western blotting was performed with pharmacological and genetic interventions in rat ventricular myocytes...
January 26, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214882/il-1%C3%AE-up-regulates-il-6-expression-in-bovine-granulosa-cells-via-mapks-and-nf-%C3%AE%C2%BAb-signaling-pathways
#4
Meng Yang, Xurong Wang, Lei Wang, Xuezhi Wang, Jianxi Li, Zhiqiang Yang
BACKGROUND/AIMS: IL-6 is one of the main cytokines in regulating ovarian follicular development and ovulation. However, the factors that regulate IL-6 expression in follicles are still unclear. The aim of this study was to elucidate the mechanisms underlying the effect of IL-1α on IL-6 expression in granulosa cells. METHODS: IL-6 expression after IL-1α with/without inhibitors treatment was analyzed by RT-qPCR and ELISA. The phosphorylation of proteins induced by IL-1α was analyzed by western blot...
January 24, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214881/attenuation-of-low-ambient-temperature-induced-myocardial-hypertrophy-by-atorvastatin-via-promoting-bcl-2-expression
#5
Jing Liang, Kun Yin, Xuefeng Cao, Zhenbo Han, Qi Huang, Lai Zhang, Wenya Ma, Fengzhi Ding, Chongwei Bi, Dan Feng, Zhenwei Pan, Yu Liu
BACKGROUND/AIMS: It is well documented that myocardial hypertrophy is associated with low ambient temperature. Atorvastatin (Atv) has been shown to protect against atherosclerosis, cardiac fibrosis, ischemia/reperfusion injury, etc. In this study, we aim to determine whether atorvastatin is effective in the treatment of myocardial hypertrophy induced by cold exposure and to shed light on underlying mechanism. METHODS: The mice aged 4-week were randomized to Control (Ctl) group (raised at room temperature), Cold group (raised at 3-5ºC) and Atv treatment group (raised at 3-5ºC followed by 10mg/kg/day Atv infusion)...
January 24, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214863/stimulation-of-erythrocyte-cell-membrane-scrambling-by-c-reactive-protein
#6
Majed Abed, Christian Thiel, Syeda T Towhid, Kousi Alzoubi, Sabina Honisch, Florian Lang, Alfred Königsrainer
BACKGROUND: Eryptosis, the suicidal erythrocyte death characterized by cell shrinkage and phosphatidylserine-translocation, is triggered by fever and inflammation. Signaling includes increased cytosolic Ca2+-activity ([Ca2+]i), caspase activation, and ceramide. Inflammation is associated with increased plasma concentration of C-reactive protein (CRP). The present study explored whether CRP triggers eryptosis. METHODS: Phosphatidylserine abundance at the cell surface was estimated from annexin-V-binding, cell volume from forward scatter, [Ca2+]i from Fluo3-fluorescence, ceramide abundance and caspase-3-activity utilizing FITC-conjugated antibodies...
February 14, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214835/up-regulation-of-tgf-%C3%AE-promotes-tendon-to-bone-healing-after-anterior-cruciate-ligament-reconstruction-using-bone-marrow-derived-mesenchymal-stem-cells-through-the-tgf-%C3%AE-mapk-signaling-pathway-in-a-new-zealand-white-rabbit-model
#7
Rui Wang, Bin Xu, Hong-Gang Xu
BACKGROUND/AIMS: This study aimed to explore the role of TGF-β in tendon-to-bone healing after anterior cruciate ligament (ACL) reconstruction using bone marrow-derived mesenchymal stem cells (BMSCs) through the TGF-β/MAPK signaling pathway in a New Zealand white rabbit model. METHODS: A total of 72 healthy male New Zealand white rabbits were selected for these experiments. Flow cytometry and immunofluorescence were used to detect the expression of BMSC surface markers, and qRT-PCR was performed to detect TGF-β mRNA expression...
January 20, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214775/role-of-c-di-gmp-in-anammox-aggregation-and-systematic-analysis-of-its-turnover-protein-in-candidatus-jettenia-caeni
#8
Yongzhao Guo, Sitong Liu, Xi Tang, Fenglin Yang
The anaerobic ammonium oxidation (anammox) process has been recognized as a promising sewage treatment approach. Considering the susceptibility, it is meaningful to study the behaviors of anammox bacteria under the unfavorable conditions. Here, we found that anammox bacteria more probably tended to aggregation by the regulation of c-di-GMP against the unfavorable environmental stresses (low temperature, aerobic condition and low pH). Further using multiple protein sequence alignment, we systematically examined the functionality of thirteen genes encoding putative c-di-GMP metabolic enzymes in anammox organism Candidatus Jettenia caeni, revealing most of the predicted enzymes were predicted to be active...
February 12, 2017: Water Research
https://www.readbyqxmd.com/read/28214758/comparative-analysis-of-viral-shedding-in-pediatric-and-adult-subjects-with-central-nervous-system-associated-enterovirus-infections-from-2013-to-2015-in-switzerland
#9
S Cordey, M Schibler, A G L'Huillier, N Wagner, A R Gonçalves, J Ambrosioni, S Asner, L Turin, K M Posfay-Barbe, L Kaiser
BACKGROUND: Several enterovirus (EV) genotypes can result in aseptic meningitis, but their routes of access to the central nervous system remain to be elucidated and may differ between the pediatric and adult populations. OBJECTIVE: To assess the pattern of viral shedding in pediatric and adult subjects with acute EV meningitis and to generate EV surveillance data for Switzerland. STUDY DESIGN: All pediatric and adult subjects admitted to the University Hospitals of Geneva with a diagnosis of EV meningitis between 2013 and 2015 were enrolled...
February 7, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28214654/programmed-cell-death-protein-1-pd-1-inhibitor-therapy-in-patients-with-advanced-melanoma-and-preexisting-autoimmunity-or-ipilimumab-triggered-autoimmunity
#10
Ralf Gutzmer, Anika Koop, Friedegund Meier, Jessica C Hassel, Patrick Terheyden, Lisa Zimmer, Lucie Heinzerling, Selma Ugurel, Claudia Pföhler, Anja Gesierich, Elisabeth Livingstone, Imke Satzger, Katharina C Kähler
AIM: Programmed cell death protein 1 (PD-1) inhibitors are a common treatment strategy for metastatic melanoma and other tumour entities. Clinical trials usually exclude patients with preexisting autoimmune diseases, thus experience with PD-1 inhibitor (PD-1i) in this patient population is limited. PATIENTS AND METHODS: Metastatic melanoma patients with preexisting autoimmune disorders or previous ipilimumab-triggered immune-related adverse events (irAE) undergoing treatment with PD-1i from seven German skin cancer centres were evaluated retrospectively with regard to flare of the preexisting autoimmunity and development of new, not preexisting irAE as well as response to PD-1i therapy...
February 16, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28214650/2-methoxyestradiol-protects-against-igg-immune-complex-induced-acute-lung-injury-by-blocking-nf-%C3%AE%C2%BAb-and-ccaat-enhancer-binding-protein-%C3%AE-activities
#11
Chunguang Yan, Yanfei Shen, Qiqing Sun, Dong Yuan, Huifang Tang, Hongwei Gao
Increasing evidences indicate that 2-Methoxyestradiol (2ME2) plays an essential role in protecting against inflammatory responses. However, its effect on IgG immune complex (IC)-induced acute lung injury (ALI) remains enigmatic. In the study, by using i.p. administration of 2ME2, we evaluated its influence on IgG IC-induced pulmonary injury in mice. We found that during IgG IC-induced ALI, mice treated by 2ME2 displayed a substantial decrease in vascular permeability and neutrophil influx (represented by myeloperoxidase activity) when compared with their counterparts receiving vehicle treatment...
February 16, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28214646/new-rna-seq-approaches-for-the-study-of-bacterial-pathogens
#12
REVIEW
Antoine-Emmanuel Saliba, Sara C Santos, Jörg Vogel
Understanding how bacteria cause disease requires knowledge of which genes are expressed and how they are regulated during infection. While RNA-seq is now a routine method for gene expression analysis in bacterial pathogens, the past years have also witnessed a surge of novel RNA-seq based approaches going beyond standard mRNA profiling. These include variations of the technique to capture post-transcriptional networks controlled by small RNAs and to discover associated RNA-binding proteins in the pathogen itself...
February 16, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/28214591/hyperglycemia-is-associated-with-reduced-testicular-function-and-activin-dysregulation-in-the-ins2-akita-mouse-model-of-type-1-diabetes
#13
Constanze C Maresch, Dina C Stute, Helen Ludlow, Hans-Peter Hammes, David M de Kretser, Mark P Hedger, Thomas Linn
Type 1 diabetes (T1D) is associated with subfertility in men. We hypothesised that this results from inhibitory effects of chronic hyperglycemia on testicular function and used the Ins2(Akita ±) mouse model to investigate this. Diabetic mice exhibited progressive testicular dysfunction, with a 30% reduction in testis weight at 24 weeks of age. Diabetic mice showed significantly reduced seminiferous tubule diameters and increased spermatogenic disruption, although testes morphology appeared grossly normal. Unexpectedly, serum LH and intra-testicular testosterone were similar in all groups...
February 15, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28214582/structural-changes-induced-by-l50p-and-i61t-single-mutations-of-ubiquitin-affect-cell-cycle-progression-while-impairing-its-regulatory-and-degradative-functions-in-saccharomyces-cerevisiae
#14
Ankita Doshi, Mrinal Sharma, C Ratna Prabha
Posttranslational conjugation of ubiquitin to proteins either regulates their function directly or concentration through ubiquitination dependent degradation. High degree of conservation of ubiquitin's sequence implies structural and functional importance of the conserved residues. Ubiquitin gene of Saccharomyces cerevisiae was evolved in vitro by us to study the significance of conserved residues. Present study investigates the structural changes in the protein resulting from the single mutations UbS20F, UbA46S, UbL50P, UbI61T and their functional consequences in the SUB60 strain of S...
February 15, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28214539/lumbee-traditional-medicine-neuroprotective-activities-of-medicinal-plants-used-to-treat-parkinson-s-disease-related-symptoms
#15
Aurélie de Rus Jacquet, Michael Timmers, Sin Ying Ma, Andrew Thieme, George P McCabe, Jay Hansford C Vest, Mary Ann Lila, Jean-Christophe Rochet
ETHNOPHARMACOLOGICAL RELEVANCE: Parkinson's disease (PD) is a neurodegenerative disorder characterized by a loss of dopaminergic neurons in the substantia nigra pars compacta and the presence in surviving neurons of Lewy body inclusions enriched with aggregated forms of the presynaptic protein α-synuclein (aSyn). Although current therapies provide temporary symptomatic relief, they do not slow the underlying neurodegeneration in the midbrain. In this study, we analyzed contemporary herbal medicinal practices used by members of the Lumbee tribe to treat PD-related symptoms, in an effort to identify safe and effective herbal medicines to treat PD...
February 15, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28214529/role-of-human-gkn1-on-app-processing-in-gastric-cancer
#16
Chiara Stella Di Stadio, Filomena Altieri, Giuseppina Minopoli, Giuseppina Miselli, Emilia Rippa, Paolo Arcari
Gastrokine 1 (GKN1) is highly expressed in gastric tissue and is secreted into the stomach but is not expressed in gastric cancer. GKN1 belongs to the BRICHOS domain family and plays a major role in maintaining gastric mucosa integrity. We previously demonstrated that a recombinant human GKN1 protein was able to interact with the amyloid precursor protein (APP) and was endowed with an anti-amyloidogenic property because it inhibited polymerization of the Aβ(1-40) peptide released from APP upon its partial hydrolysis...
February 15, 2017: Biochimie
https://www.readbyqxmd.com/read/28214429/interplay-between-autophagy-and-apoptosis-in-selenium-deficient-cardiomyocytes-in-chicken
#17
Jie Yang, Yuan Zhang, Sattar Hamid, Jingzeng Cai, Qi Liu, Hao Li, Rihong Zhao, Hong Wang, Shiwen Xu, Ziwei Zhang
Dietary selenium (Se) deficiency can cause heart dysfunction, however the exact mechanism remains unclear. To understand this mechanism, 180day-old chicks, divided into two groups, C (control group) and L (low Se group), were fed with either a Se-sufficient (0.23mg/kg) or Se-deficient (0.033mg/kg) diets for 25days, respectively. Heart tissues and blood samples were collected. In L group, the activities of serum creatine kinase (CK) and creatine kinase-myoglobin (CK-MB) increased and typical ultrastructural apoptotic features were observed...
February 10, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28214373/improved-detection-of-zika-virus-rna-in-human-and-animal-specimens-by-a-novel-highly-sensitive-and-specific-real-time-rt-pcr-assay-targeting-the-5-untranslated-region-of-zika-virus
#18
Jasper Fuk-Woo Chan, Cyril Chik-Yan Yip, Kah-Meng Tee, Zheng Zhu, Jessica Oi-Ling Tsang, Kenn Ka-Heng Chik, Terance Gi-Wai Tsang, Chris Chung-Sing Chan, Vincent Kwok-Man Poon, Siddharth Sridhar, Feifei Yin, Ivan Fan-Ngai Hung, Sandy Ka-Yee Chau, Anna Jinxia Zhang, Kwok-Hung Chan, Kwok-Yung Yuen
OBJECTIVE AND METHOD: We developed and evaluated five novel real-time RT-PCR assays targeting conserved regions in the 5'-untranslated region (5'-UTR), envelope (E'), non-structural protein 2A (NS2A), NS5, and 3'-UTR of the ZIKV genome. RESULTS: The ZIKV-5'-UTR assay exhibited the lowest in-vitro limit of detection (5-10 RNA copies/reaction and 3.0×10(-1) plaque-forming units/ml). Compared to the modified version of a widely adopted RT-PCR assay targeting the ZIKV-E gene, the ZIKV-5'-UTR assay showed better sensitivity in human clinical specimens, and representative mouse specimens, including many organs which are known to be involved in human ZIKV infection but difficult to obtain in clinical settings...
February 18, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28214364/in-situ-analysis-of-bacillus-licheniformis-biofilms-amyloid-like-polymers-and-edna-are-involved-in-the-adherence-and-aggregation-of-the-extracellular-matrix
#19
I Randrianjatovo-Gbalou, P Rouquette, D Lefebvre, E Girbal-Neuhauser, C-E Marcato-Romain
AIMS: This study attempts to determine which exopolymeric substances are involved in the adherence and aggregation of a Bacillus licheniformis biofilm. METHODS AND RESULTS: The involvement of extracellular proteins and eDNA were particularly investigated using DNase and proteinase K treatment. The permeability of the biofilms increased 5-fold after DNase I-treatment. Quantification of the matrix components showed that, whatever the enzyme tested, some eDNA and amyloid-like polymers were removed simultaneously...
February 18, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28214356/comparative-analysis-of-the-transcriptional-responses-to-low-and-high-temperature-in-three-rice-planthopper-species
#20
Hai-Jian Huang, Jian Xue, Ji-Chong Zhuo, Ruo-Lin Cheng, Hai-Jun Xu, Chuan-Xi Zhang
The brown planthopper (Nilaparvata lugens, BPH), white-backed planthopper (Sogatella furcifera, WBPH), and small brown planthopper (Laodelphax striatellus, SBPH) are important rice pests in Asia. These three species differ in thermal tolerance and exhibit quite different migration and overwintering strategies. To understand the underlying mechanisms, we sequenced and compared the transcriptome of the three species under different temperature treatments. We found that metabolism-, exoskeleton-, and chemosensory-related genes were modulated...
February 18, 2017: Molecular Ecology
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