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Type 6 secretion

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https://www.readbyqxmd.com/read/28429895/interleukin-6-and-resistin-in-relation-to-anthropometric-measurements-in-school-children
#1
Carolina Del Pilar Escalona-Villasmil, Jorymar Yoselyn Leal-Montiel, Pablo Antonio Ortega-Fernindez, Carlos Javier Chavez
The worldwide prevalence of childhood obesity has increased greatly over the past three decades. The increasing occurrence in children of disorders, such as type 2 diabetes, is believed to be a consequence of this obesity epidemic. Although the precise mechanisms are still unclear, dysregulated production or secretion of adipokines caused by excess adipose tissue and adipose tissue dysfunction can contribute to the development of obesity-related me- tabolic diseases. The objective of the study was to determine the serum levels of interleukin-6 and resistin in relation to anthropometric measurements in school children...
June 2016: Investigación Clínica
https://www.readbyqxmd.com/read/28427982/preoperative-evaluation-of-sellar-and-parasellar-macro-lesions-by-fluorine-18-fluorodeoxyglucose-positron-emission-tomography
#2
Masahiko Tosaka, Tetsuya Higuchi, Keishi Horiguchi, Tadashi Osawa, Yukiko Arisaka, Haruyasu Fujita, Yoshito Tsushima, Yuhei Yoshimoto
OBJECTIVE: Various pathologies can occur in the sellar and suprasellar regions. The potential of fluorine-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) for the preoperative evaluation of sellar and parasellar lesions was investigated. METHODS: A total of 49 patients aged 8 to 82 years with sellar and parasellar macroscopic lesions (≥10 mm) underwent FDG PET. Twenty-two patients had pituitary adenomas, including 14 non-functioning and 8 growth hormone (GH)-secreting adenomas...
April 17, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28425576/bone-marrow-adipose-and-lung-tissue-derived-murine-mesenchymal-stromal-cells-release-different-mediators-and-differentially-affect-airway-and-lung-parenchyma-in-experimental-asthma
#3
Soraia C Abreu, Mariana A Antunes, Debora G Xisto, Fernanda F Cruz, Vivian C Branco, Elga Bandeira, Jamil Zola Kitoko, Almair F de Araújo, Ludmilla Dellatorre-Texeira, Priscilla C Olsen, Daniel J Weiss, Bruno L Diaz, Marcelo M Morales, Patricia R M Rocco
Mesenchymal stromal cells (MSCs) from different sources have differential effects on lung injury. To compare the effects of murine MSCs from bone marrow (BM), adipose tissue (AD), and lung tissue (LUNG) on inflammatory and remodeling processes in experimental allergic asthma, female C57BL/6 mice were sensitized and challenged with ovalbumin (OVA) or saline (C). Twenty-four hours after the last challenge, mice received either saline (50 µl, SAL), BM-MSCs, AD-MSCs, or LUNG-MSCs (10(5) cells per mouse in 50 µl total volume) intratracheally...
April 20, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28423682/rip3-deficiency-ameliorates-inflammatory-response-in-mice-infected-with-influenza-h7n9-virus-infection
#4
Yu-Lin Xu, Hai-Lin Tang, Hao-Ran Peng, Ping Zhao, Zhong-Tian Qi, Wen Wang
Influenza H7N9 virus infection causes an acute, highly contagious respiratory illness that triggers cell death of infected cells and airway epithelial destruction. RIP3 is a key regulator of cell death responses to a growing number of viral and microbial agents. This study aimed to investigate the role of RIP3 in inflammation of influenza H7N9 virus infection. Here, RIP3 knock out (RIP3-/-) mice and littermate wild type mice were infected intranasally with influenza H7N9 virus (A/Fujian/S03/2015) to determine the contribution of RIP3 to the inflammatory response of influenza H7N9 virus infection...
March 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423120/primary-cultures-of-mouse-small-intestinal-epithelial-cells-using-the-dissociating-enzyme-type-i-collagenase-and-hyaluronidase
#5
H J Ren, C L Zhang, R D Liu, N Li, X G Li, H K Xue, Y Guo, Z Q Wang, J Cui, L Ming
The epithelium is a highly dynamic system, which plays a crucial role in the homeostasis of the intestinal tract. However, studies on the physiological and pathophysiological functions of intestinal epithelial cells (IECs) have been hampered due to lack of normal epithelial cell models. In the present study, we established a reproducible method for primary culture of mouse IECs, which were isolated from the viable small intestinal crypts of murine fetuses (on embryonic day 19), using type I collagenase and hyaluronidase in a short span of time (≤20 min)...
April 13, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28421913/type-vi-secretion-systems-of-erwinia-amylovora-contribute-to-bacterial-competition-virulence-and-exopolysaccharide-production
#6
Yanli Tian, Yuqiang Zhao, Linye Shi, Zhongli Cui, Baishi Hu, Youfu Zhao
The type VI secretion system (T6SS) plays a major role in mediating interbacterial competition and might contribute to virulence in plant pathogenic bacteria. However, the role of T6SS in Erwinia amylovora remains unknown. In this study, 33 deletion mutants within three T6SS clusters were generated in E. amylovora strain NCPPB1665. Our results showed that all 33 mutants displayed reduced antibacterial activities against Escherichia coli as compared with that of the wild-type (WT) strain, indicating that Erwinia amylovora T6SS are functional...
April 19, 2017: Phytopathology
https://www.readbyqxmd.com/read/28421662/the-outer-membrane-vesicles-secretion-system-type-zero
#7
REVIEW
Andrea Guerrero-Mandujano, Cecilia Hernández-Cortez, J Antonio Ibarra, Graciela Castro-Escarpulli
Gram-negative bacteria have mechanisms through which they can colonize and survive in different environments, such as the secretion systems types (1-6) that have been widely studied and characterized. Nowadays, some authors have proposed extracellular structures, such as the outer membrane vesicles, to be considered as an additional and independent secretion system. The outer membrane vesicles are spherical particles of 50-250 nm in diameter; they originate in the outer membrane, therefore, they have a very similar composition to the latter...
April 19, 2017: Traffic
https://www.readbyqxmd.com/read/28420366/pirfenidone-attenuates-bleomycin-induced-pulmonary-fibrosis-in-mice-by-regulating-nrf2-bach1-equilibrium
#8
Yuan Liu, Fuai Lu, Lirong Kang, Zhihua Wang, Yongfu Wang
BACKGROUND: Oxidative stress is one of the important factors involved in the pathogenesis of idiopathic pulmonary fibrosis (IPF). The equilibrium of Nuclear factor-erythroid-related factor 2 (Nrf2)/[BTB (broad-complex, tramtrack and bric-a-brac) and CNC (cap'n'collar protein) homology 1, Bach1] determines the expression level of antioxidant factors, further regulating the function of oxidation/antioxidation capacity. Pirfenidone (PFD) is one of two currently for IPF therapy approved drugs...
April 18, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28419140/niche-matters-the-comparison-between-bone-marrow-stem-cells-and-endometrial-stem-cells-and-stromal-fibroblasts-reveal-distinct-migration-and-cytokine-profiles-in-response-to-inflammatory-stimulus
#9
Masuma Khatun, Anna Sorjamaa, Marika Kangasniemi, Meeri Sutinen, Tuula Salo, Annikki Liakka, Petri Lehenkari, Juha S Tapanainen, Olli Vuolteenaho, Joseph C Chen, Siri Lehtonen, Terhi T Piltonen
OBJECTIVE: Intrinsic inflammatory characteristics play a pivotal role in stem cell recruitment and homing through migration where the subsequent change in niche has been shown to alter these characteristics. The bone marrow mesenchymal stem cells (bmMSCs) have been demonstrated to migrate to the endometrium contributing to the stem cell reservoir and regeneration of endometrial tissue. Thus, the aim of the present study was to compare the inflammation-driven migration and cytokine secretion profile of human bmMSCs to endometrial mesenchymal stem cells (eMSCs) and endometrial fibroblasts (eSFs)...
2017: PloS One
https://www.readbyqxmd.com/read/28414151/targeted-antigen-delivery-to-dendritic-cell-via-functionalized-alginate-nanoparticles-for-cancer-immunotherapy
#10
Chuangnian Zhang, Gaona Shi, Ju Zhang, Huijun Song, Jinfeng Niu, Shengbin Shi, Pingsheng Huang, Yanming Wang, Weiwei Wang, Chen Li, Deling Kong
The purpose of the present study was to identify an "easy-to-adopt" strategy to enhance immune responses using functionalized alginate (ALG) nanoparticles (MAN-ALG/ALG=OVA NPs), which were prepared by CaCl2 cross-linking of two different types of ALG. The mannose (MAN) modified ALG (MAN-ALG) was used for dendritic cell targeting. The other component, composed of ovalbumin (OVA), a model antigen, is conjugated to ALG (ALG=OVA) via pH sensitive Schiff base bond. Grafting of alginate was demonstrated by FT-IR and (1)H NMR, while the morphological structure, particle size, Zeta potential of MAN-ALG/ALG=OVA NPs were measured using TEM and DLS...
April 13, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28413465/protective-effects-of-baicalin-on-rabbit-articular-chondrocytes-in-vitro
#11
Xianyuan Huang, Huayu Wu, Liqin Wang, Li Zheng, Jinmin Zhao
Drug therapy is one of the typical treatments for post-injury inflammation of cartilage. Traditional Chinese herbs have potential as treatments, as their long history of clinical application has demonstrated they are effective and induce minimal side effects. Baicalin is a traditional Chinese medicine that has been used to treat inflammation, fever, ulcers and cancer for hundreds of years. Previous studies have demonstrated that baicalin may decrease levels of interleukin-1β and suppress the expression of type-I collagen, thus attenuating cartilage degeneration...
April 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28412968/interleukin-1-primes-human-mesenchymal-stem-cells-towards-an-anti-inflammatory-and-pro-trophic-phenotype-in-vitro
#12
Elena Redondo-Castro, Catriona Cunningham, Jonjo Miller, Licia Martuscelli, Sarah Aoulad-Ali, Nancy J Rothwell, Cay M Kielty, Stuart M Allan, Emmanuel Pinteaux
BACKGROUND: Inflammation is a key contributor to central nervous system (CNS) injury such as stroke, and is a major target for therapeutic intervention. Effective treatments for CNS injuries are limited and applicable to only a minority of patients. Stem cell-based therapies are increasingly considered for the treatment of CNS disease, because they can be used as in-situ regulators of inflammation, and improve tissue repair and recovery. One promising option is the use of bone marrow-derived mesenchymal stem cells (MSCs), which can secrete anti-inflammatory and trophic factors, can migrate towards inflamed and injured sites or can be implanted locally...
April 17, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28411684/in-vivo-antimalarial-activity-of-synthetic-hepcidin-against-plasmodium-berghei-in-mice
#13
Ya-Qun Fang, Chuan-Bin Shen, Ning Luan, Hui-Min Yao, Chen-Bo Long, Ren Lai, Xiu-Wen Yan
The present study was designed to investigate the antimalarial activity of synthetic hepcidin and its effect on cytokine secretion in mice infected with Plasmodium berghei. The mice were infected with P. berghei intravenously and treated with hepcidin according to 4-day suppression test and Rane's test. The serum levels of interleukins (IL-1β, IL-2, IL-6, IL-10, IL-12p70, and IL-17A), tumor necrosis factor-α (TNF-α), and interferon-γ (IFN-γ) in the experimental mice were determined using a cytometric bead array (CBA) kit...
March 2017: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/28410371/determining-the-role-of-missense-mutations-in-the-pou-domain-of-hnf1a-that-reduce-the-dna-binding-affinity-a-computational-approach
#14
Sneha P, Thirumal Kumar D, George Priya Doss C, Siva R, Hatem Zayed
Maturity-onset diabetes of the young type 3 (MODY3) is a non-ketotic form of diabetes associated with poor insulin secretion. Over the past years, several studies have reported the association of missense mutations in the Hepatocyte Nuclear Factor 1 Alpha (HNF1A) with MODY3. Missense mutations in the POU homeodomain (POUH) of HNF1A hinder binding to the DNA, thereby leading to a dysfunctional protein. Missense mutations of the HNF1A were retrieved from public databases and subjected to a three-step computational mutational analysis to identify the underlying mechanism...
2017: PloS One
https://www.readbyqxmd.com/read/28409690/salivary-cortisol-concentration-after-high-intensity-interval-exercise-time-of-day-and-chronotype-effect
#15
Matteo Bonato, Antonio La Torre, Marina Saresella, Ivana Marventano, Giampiero Merati, Jacopo Antonino Vitale
Due to personal and working necessities, the time for exercise is often short, and scheduled early in the morning or late in the afternoon. Cortisol plays a central role in the physiological and behavioral response to a physical challenge and can be considered as an index of exercise stress. Therefore, the aim of this study was to evaluate the influence of the circadian phenotype classification on salivary cortisol concentration in relation to an acute session of high-intensity interval exercise (HIIE) performed at different times of the day...
April 14, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28407740/mu-opioid-receptor-and-delta-opioid-receptor-differentially-regulate-microglial-inflammatory-response-to-control-proopiomelanocortin-neuronal-apoptosis-in-the-hypothalamus-effects-of-neonatal-alcohol
#16
Pallavi Shrivastava, Miguel A Cabrera, Lucy G Chastain, Nadka I Boyadjieva, Shaima Jabbar, Tina Franklin, Dipak K Sarkar
BACKGROUND: Opioid receptors are known to control neurotransmission of various peptidergic neurons, but their potential role in regulation of microglia and neuronal cell communications is unknown. We investigated the role of mu-opioid receptors (MOR) and delta-opioid receptors (DOR) on microglia in the regulation of apoptosis in proopiomelanocortin (POMC) neurons induced by neonatal ethanol in the hypothalamus. METHODS: Neonatal rat pups were fed a milk formula containing ethanol or control diets between postnatal days 2-6...
April 14, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28404732/roles-of-the-traf6-and-pellino-e3-ligases-in-myd88-and-rankl-signaling
#17
Sam Strickson, Christoph H Emmerich, Eddy T H Goh, Jiazhen Zhang, Ian R Kelsall, Thomas Macartney, C James Hastie, Axel Knebel, Mark Peggie, Francesco Marchesi, J Simon C Arthur, Philip Cohen
It is widely accepted that the essential role of TRAF6 in vivo is to generate the Lys63-linked ubiquitin (K63-Ub) chains needed to activate the "master" protein kinase TAK1. Here, we report that TRAF6 E3 ligase activity contributes to but is not essential for the IL-1-dependent formation of K63-Ub chains, TAK1 activation, or IL-8 production in human cells, because Pellino1 and Pellino2 generate the K63-Ub chains required for signaling in cells expressing E3 ligase-inactive TRAF6 mutants. The IL-1-induced formation of K63-Ub chains and ubiquitylation of IRAK1, IRAK4, and MyD88 was abolished in TRAF6/Pellino1/Pellino2 triple-knockout (KO) cells, but not in TRAF6 KO or Pellino1/2 double-KO cells...
April 12, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28404639/cholesterol-crystallization-within-hepatocyte-lipid-droplets-and-its-role-in-murine-nash
#18
George N Ioannou, Savitha Subramanian, Alan Chait, W Geoffrey Haigh, Matthew M Yeh, Geoffrey C Farrell, Sum P Lee, Christopher Savard
We recently reported that cholesterol crystals form in hepatocyte lipid droplets (LDs) in human and experimental NASH. Herein, we assigned wild-type C57BL/6J mice to a high-fat (15%) diet for 6 months supplemented with 0%, 0.25%, 0.5%, 0.75%, or 1% dietary cholesterol. Increasing dietary cholesterol led to cholesterol loading of the liver, but not adipose tissue, resulting in fibrosing steatohepatitis at a dietary cholesterol concentration ≥0.5%, whereas mice on lower cholesterol diets developed only simple steatosis...
April 12, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28403148/human-neutrophil-peptide-1-promotes-alcohol-induced-hepatic-fibrosis-and-hepatocyte-apoptosis
#19
Rie Ibusuki, Hirofumi Uto, Kohei Oda, Akihiko Ohshige, Kazuaki Tabu, Seiichi Mawatari, Kotaro Kumagai, Shuji Kanmura, Tsutomu Tamai, Akihiro Moriuchi, Hirohito Tsubouchi, Akio Ido
BACKGROUND AND AIMS: Neutrophil infiltration of the liver is a typical feature of alcoholic liver injury. Human neutrophil peptide (HNP)-1 is an antimicrobial peptide secreted by neutrophils. The aim of this study was to determine if HNP-1 affects ethanol-induced liver injury and to examine the mechanism of liver injury induced by HNP-1. METHODS: Transgenic (TG) mice expressing HNP-1 under the control of a β-actin-based promoter were established. Ethanol was orally administered to HNP-1 TG or wild-type C57BL/6N (WT) mice...
2017: PloS One
https://www.readbyqxmd.com/read/28401569/influences-on-viral-replication-and-sensitivity-to-gls4-a-hap-compound-of-naturally-occurring-t109-v124-mutations-in-hepatitis-b-virus-core-protein
#20
Jianghua Wang, Haiying Zhang, Yingjun Zhang, Dong Jiang, Jing Li, Siegfried Goldmann, Qingyun Ren, Ran Fei, Xueyan Wang, Lai Wei
Heteroaryldihydropyrimidine (HAP) compounds inhibit HBV replication by binding to a hydrophobic pocket at the interface between hepatitis B virus core protein (HBcAg) dimer, which interrupts capsid assembly by changing the kinetics and thermodynamics during this process. Structure biological studies have identified several amino acids in HBcAg crucial for compound binding. Here we investigated the polymorphisms of T109 and V124 amino acids in HBV sequences submitted to GenBank database. Naturally occurring T109 and V124 and/or possible compensatory mutations in neighbored amino acids were introduced into HBV-expressing plasmids...
April 12, 2017: Journal of Medical Virology
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