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https://www.readbyqxmd.com/read/28644106/viability-and-osteogenic-differentiation-of-human-periodontal-ligament-progenitor-cells-are-maintained-after-incubation-with-porphyromonas-gingivalis-protein-extract
#1
Mayra Laino Albiero, Rafael Nóbrega Stipp, Miki Taketomi Saito, Márcio Zaffalon Casati, Enilson Antonio Sallum, Francisco Humberto Nociti, Karina Gonzales Silvério
BACKGROUND: Porphyromonas gingivalis (Pg) is a major periodontal pathogen that contains immunostimulatory components. Periodontal ligament mesenchymal stem cells (PDLSCs) are responsible for regeneration of the periodontium that is lost due to periodontitis. Pathologic factors within the microenvironment that impair resident PDLSCs are not well understood. The present study investigated in vitro the effects of Pg protein extract (PgPE) on the biological properties of CD105-enriched PDL progenitor cell populations (PDL-CD105(+) cells)...
June 23, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28611764/interplay-of-pathogen-induced-defense-responses-and-symbiotic-establishment-in-medicago-truncatula
#2
Tao Chen, Liujian Duan, Bo Zhou, Haixiang Yu, Hui Zhu, Yangrong Cao, Zhongming Zhang
Suppression of host innate immunity appears to be required for the establishment of symbiosis between rhizobia and host plants. In this study, we established a system that included a host plant, a bacterial pathogen and a symbiotic rhizobium to study the role of innate immunity during symbiotic interactions. A pathogenic bacterium, Pseudomonas syringae pv. tomato strain DC3000 (Pst DC3000), was shown to cause chlorosis in Medicago truncatula A17. Sinorhizobium meliloti strain Sm2011 (Sm2011) and Pst DC3000 strain alone induced similar defense responses in M...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28592245/in-silico-identification-of-potential-key-regulatory-factors-in-smoking-induced-lung-cancer
#3
Salem A El-Aarag, Amal Mahmoud, Medhat H Hashem, Hatem Abd Elkader, Alaa E Hemeida, Mahmoud ElHefnawi
BACKGROUND: Lung cancer is a leading cause of cancer-related death worldwide and is the most commonly diagnosed cancer. Like other cancers, it is a complex and highly heterogeneous disease involving multiple signaling pathways. Identifying potential therapeutic targets is critical for the development of effective treatment strategies. METHODS: We used a systems biology approach to identify potential key regulatory factors in smoking-induced lung cancer. We first identified genes that were differentially expressed between smokers with normal lungs and those with cancerous lungs, then integrated these differentially expressed genes (DEGs) with data from a protein-protein interaction database to build a network model with functional modules for pathway analysis...
June 7, 2017: BMC Medical Genomics
https://www.readbyqxmd.com/read/28581888/il17a-augments-autophagy-in-mycobacterium-tuberculosis-infected-monocytes-from-patients-with-active-tuberculosis-in-association-with-the-severity-of-the-disease
#4
Nancy Liliana Tateosian, Joaquín Miguel Pellegrini, Nicolás Oscar Amiano, Agustín Rolandelli, Nicolás Casco, Domingo Juan Palmero, María Isabel Colombo, Verónica Edith García
During mycobacterial infection, macroautophagy/autophagy, a process modulated by cytokines, is essential for mounting successful host responses. Autophagy collaborates with human immune responses against Mycobacterium tuberculosis (Mt) in association with specific IFNG secreted against the pathogen. However, IFNG alone is not sufficient to the complete bacterial eradication, and other cytokines might be required. Actually, induction of Th1 and Th17 immune responses are required for protection against Mt. Accordingly, we showed that IL17A and IFNG expression in lymphocytes from tuberculosis patients correlates with disease severity...
June 5, 2017: Autophagy
https://www.readbyqxmd.com/read/28574608/role-of-mitogen-activated-protein-kinase-and-maturation-promoting-factor-during-the-achievement-of-meiotic-competency-in-mammalian-oocytes
#5
Meenakshi Tiwari, Anumegha Gupta, Alka Sharma, Shilpa Prasad, Ashutosh N Pandey, Pramod K Yadav, Ajai K Pandey, Tulsidas G Shrivastav, Shail K Chaube
The oocyte quality remains as one of the major problems associated with poor in vitro fertilization (IVF) rate and assisted reproductive technology (ART) failure worldwide. The oocyte quality is dependent on its meiotic maturation that begins inside the follicular microenvironment and gets completed at the time of ovulation in most of the mammalian species. Follicular oocytes are arrested at diplotene stage of first meiotic prophase. The resumption of meiosis from diplotene arrest, progression through metaphase-I (M-I) and further arrest at metaphase-II (M-II) are important physiological requirements for the achievement of meiotic competency in mammalian oocytes...
June 2, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28560380/sorafenib-induces-variations-of-the-dna-methylome-in-ha22t-vgh-human-hepatocellular-carcinoma-derived-cells
#6
Edoardo Abeni, Alessandro Salvi, Eleonora Marchina, Michele Traversa, Bruna Arici, Giuseppina De Petro
Sorafenib is currently used to treat advanced and/or unresectable hepatocellular carcinoma (HCC), but the increase of the median survival was only 3 months. Moreover, sorafenib has severe side effects and patients develop resistance quickly. Epigenetic alterations such as DNA methylation play a decisive role in the development and progression of HCC. To our knowledge, there are no studies that analysed the global DNA methylation changes in HCC cells treated with sorafenib. Using MeDip-chip technologies, we found 1230 differentially methylated genes in HA22T/VGH cells treated with sorafenib compared to untreated cells...
May 24, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28559407/neutrophil-elastase-and-il17-expressed-in-the-pig-colon-during-brachyspira-hyodysenteriae-infection-synergistically-with-the-pathogen-induce-increased-mucus-transport-speed-and-production-via-mapk3
#7
Macarena P Quintana-Hayashi, Nazanin Navabi, Maxime Mahu, Vignesh Venkatakrishnan, Harvey R Fernandez, Freddy Haesebrouck, Frank Pasmans, Sara K Lindén
Brachyspira hyodysenteriae colonizes the pig colon resulting in mucoid hemorragic diarrhea and mucus layer changes. These changes are characterized by a disorganized mucus structure and a massive mucus induction with de novo expression of MUC5AC and increased production of MUC2. To investigate the mechanisms behind this altered mucin environment, we quantified the mRNA levels of mucin pathway genes and factors from the immune system in the colon of infected and control pigs, revealing upregulation of neutrophil elastase, SPDEF, FOXA3, MAPK3/ERK1, IL-17A, IL-1β, IL-6 and IL-8 expression...
May 30, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28456913/the-effect-and-osteoblast-signaling-response-of-trace-silicon-doping-hydroxyapatite
#8
Tian Sun, Ming Wang, Yiran Shao, Liping Wang, Yingchun Zhu
It is commonly accepted that silicon-doped hydroxyapatite (HAp) can achieve good repair effects for both spinal fusion and bone defect filling. However, the underlying mechanism by which silicon aids such beneficial effects is still not fully understood. Herein, we report on silicon-doped hydroxyapatites with excellent biocompatibility to osteoblast cells and suggest the signaling pathway involved. Non-doped HAp and trace Si-doped HAp (Si/HAp) with Si concentration close to and higher than natural bones were synthesized (i...
April 29, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28438610/hyperglycemia-increases-interstitial-cells-of-cajal-via-mapk1-and-mapk3-signaling-to-etv1-and-kit-leading-to-rapid-gastric-emptying
#9
Yujiro Hayashi, Yoshitaka Toyomasu, Siva Arumugam Saravanaperumal, Michael R Bardsley, John A Smestad, Andrea Lorincz, Seth T Eisenman, Gianluca Cipriani, Molly H Nelson Holte, Fatimah J Al Khazal, Sabriya A Syed, Gabriella B Gajdos, Kyoung Moo Choi, Gary J Stoltz, Katie E Miller, Michael L Kendrick, Brian P Rubin, Simon J Gibbons, Adil E Bharucha, David R Linden, Louis James Maher, Gianrico Farrugia, Tamas Ordog
BACKGROUND & AIMS: Depletion of interstitial cells of Cajal (ICCs) is common in diabetic gastroparesis. However, in approximately 20% of patients with diabetes, gastric emptying (GE) is accelerated. GE also occurs faster in obese individuals, and is associated with increased blood levels of glucose in patients with type 2 diabetes. To understand the fate of ICCs in hyperinsulinemic, hyperglycemic states characterized by rapid GE, we studied mice with mutation of the leptin receptor (Lepr(db/db)), which in our colony had accelerated GE...
April 21, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28433874/systematically-characterize-the-absorbed-effective-substances-of-wutou-decoction-and-their-metabolic-pathways-in-rat-plasma-using-uhplc-q-tof-ms-combined-with-a-target-network-pharmacological-analysis
#10
Tengfei Xu, Shizhe Li, Yufei Sun, Zifeng Pi, Shu Liu, Fengrui Song, Zhiqiang Liu
Wu-tou Decoction (WTD) is a famous traditional Chinese medicine (TCM) formula which is applied to treat arthritis and pain of joints. In this study, a sensitive and rapid method was developed for the separation and identification of the absorbed constituents and metabolites of WTD in the rats plasma by ultra high-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UHPLC-Q-TOF-MS). A total of 22 absorbed prototype constituents and 49 metabolites were identified or tentatively characterized in dosed plasma...
April 13, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28389370/prostaglandin-e2-stimulates-the-expression-of-cumulus-expansion-related-genes-in-pigs-the-role-of-protein-kinase-b
#11
Milan Blaha, Radek Prochazka, Katerina Adamkova, Jan Nevoral, Lucie Nemcova
The production of prostaglandin E2 (PGE2) seems to play an important role in the ovulation process. PGE2 was found to induce cumulus expansion and meiosis resumption in mice, but little is known about its role in pigs. The goals of this study were (a) to assess the effect of PGE2 on the expression levels of cumulus expansion-related genes, (b) to define the signaling pathways that drive the PGE2-stimulated expression of cumulus expansion-related genes, (c) to measure the effect of PGE2 on the activation of key signaling molecules (MAPK3/1, PKB) and on hyaluronan production in cumulus cells, and (d) to assess the effect of PGE2 on meiosis resumption...
May 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28315333/triiodothyronine-promotes-the-proliferation-of-epicardial-progenitor-cells-through-the-mapk-erk-pathway
#12
Song-Bai Deng, Xiao-Dong Jing, Xiao-Ming Wei, Jian-Lin Du, Ya-Jie Liu, Qin Qin, Qiang She
Thyroid hormone has important functions in the development and physiological function of the heart. The aim of this study was to determine whether 3,5,3'-Triiodothyronine (T3) can promote the proliferation of epicardial progenitor cells (EPCs) and to investigate the potential underlying mechanism. Our results showed that T3 significantly promoted the proliferation of EPCs in a concentration- and time-dependent manner. The thyroid hormone nuclear receptor inhibitor bisphenol A (100 μmol/L) did not affect T3's ability to induce proliferation...
April 29, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28303123/trichoderma-asperellum-t42-and-pseudomonas-fluorescens-okc-enhances-resistance-of-pea-against-erysiphe-pisi-through-enhanced-ros-generation-and-lignifications
#13
Jai S Patel, Ravindra N Kharwar, Harikesh B Singh, Ram S Upadhyay, Birinchi K Sarma
Plant signaling mechanisms are not completely understood in plant-fungal biotrophic pathogen interactions. Further how such interactions are influenced by compatible rhizosphere microbes are also not well-studied. Therefore, we explored the pea-Erysiphe pisi (obligate biotroph) system to understand the interaction and applied compatible rhizospheric bio-agents Trichoderma asperellum (T42) and Pseudomonas fluorescens (OKC) singly or in combination to assess their influence on the host while under the pathogen challenge...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28291684/identification-of-compounds-with-cytotoxic-activity-from-the-leaf-of-the-nigerian-medicinal-plant-anacardium-occidentale-l-anacardiaceae
#14
Bamigboye J Taiwo, Amos A Fatokun, Olujide O Olubiyi, Olukemi T Bamigboye-Taiwo, Fanie R van Heerden, Colin W Wright
Cancer is now the second-leading cause of mortality and morbidity, behind only heart disease, necessitating urgent development of (chemo)therapeutic interventions to stem the growing burden of cancer cases and cancer death. Plants represent a credible source of promising drug leads in this regard, with a long history of proven use in the indigenous treatment of cancer. This study therefore investigated Anacardium occidentale, one of the plants in a Nigerian Traditional Medicine formulation commonly used to manage cancerous diseases, for cytotoxic activity...
February 22, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28266316/genomic-copy-number-variation-associated-with-clinical-outcome-in-canine-cutaneous-mast-cell-tumors
#15
Paulo C Jark, Deborah B P Mundin, Marcio de Carvalho, Raquel B Ferioli, Letícia A Anai, Fabio A Marchi, Silvia R Rogatto, Renee Laufer-Amorim, Mirela Tinucci-Costa
Mast cell tumors are the most common malignant cutaneous tumors in dogs. Although there are several prognostic factors involved, the clinical and biological behavior of this type of tumor varies greatly, making the best choice of treatment challenging. Molecular techniques can be used to evaluate a large number of genes involved in the neoplastic process and aid in the selection of candidate genes related to prognostic and predicting factors. Identification of the genes associated with tumor development and progression can be performed through the analysis of numerical and structural changes in DNA isolated from tumor cells by array comparative genomic hybridization (aCGH)...
April 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28222174/slmapk3-enhances-tolerance-to-tomato-yellow-leaf-curl-virus-tylcv-by-regulating-salicylic-acid-and-jasmonic-acid-signaling-in-tomato-solanum-lycopersicum
#16
Yunzhou Li, Lei Qin, Jingjing Zhao, Tayeb Muhammad, Hehe Cao, Hailiang Li, Yan Zhang, Yan Liang
Several recent studies have reported on the role of mitogen-activated protein kinase (MAPK3) in plant immune responses. However, little is known about how MAPK3 functions in tomato (Solanum lycopersicum L.) infected with tomato yellow leaf curl virus (TYLCV). There is also uncertainty about the connection between plant MAPK3 and the salicylic acid (SA) and jasmonic acid (JA) defense-signaling pathways. The results of this study indicated that SlMAPK3 participates in the antiviral response against TYLCV. Tomato seedlings were inoculated with TYLCV to investigate the possible roles of SlMAPK1, SlMAPK2, and SlMAPK3 against this virus...
2017: PloS One
https://www.readbyqxmd.com/read/28218391/mapk3-1-participates-in-the-activation-of-primordial-follicles-through-mtorc1-kitl-signaling
#17
Yu Zhao, Yu Zhang, Jia Li, Nana Zheng, Xiaoting Xu, Jing Yang, Guoliang Xia, Meijia Zhang
The majority of ovarian primordial follicles are preserved in a dormant state to maintain the female reproductive lifespan, and only a few primordial follicles are activated to enter the growing follicle pool in each wave. Recent studies have shown that primordial follicular activation depends on mammalian target of rapamycin complex 1 (mTORC1)-KIT ligand (KITL) signaling in pre-granulosa cells and its receptor (KIT)-phosphoinositol 3 kinase (PI3K) signaling in oocytes. However, the upstream regulator of mTORC1 signaling is unclear...
February 20, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28196412/mapk3-at-the-autism-linked-human-16p11-2-locus-influences-precise-synaptic-target-selection-at-drosophila-larval-neuromuscular-junctions
#18
Sang Mee Park, Hae Ryoun Park, Ji Hye Lee
Proper synaptic function in neural circuits requires precise pairings between correct pre- and post-synaptic partners. Errors in this process may underlie development of neuropsychiatric disorders, such as autism spectrum disorder (ASD). Development of ASD can be influenced by genetic factors, including copy number variations (CNVs). In this study, we focused on a CNV occurring at the 16p11.2 locus in the human genome and investigated potential defects in synaptic connectivity caused by reduced activities of genes located in this region at Drosophila larval neuromuscular junctions, a well-established model synapse with stereotypic synaptic structures...
February 2017: Molecules and Cells
https://www.readbyqxmd.com/read/28177124/acute-exercise-elicits-differential-expression-of-insulin-resistance-genes-in-the-skeletal-muscle-of-patients-with-polycystic-ovary-syndrome
#19
Wagner Silva Dantas, Igor Hisashi Murai, Luiz Augusto Perandini, Hatylas Azevedo, Carlos Alberto Moreira-Filho, Niels Olsen Saraiva Camara, Hamilton Roschel, Bruno Gualano
OBJECTIVE: This study aimed to explore the role of acute exercise on skeletal muscle gene expression related to insulin resistance in patients with polycystic ovary syndrome (PCOS) and controls. METHODS: Four obese women with PCOS and four body mass index (BMI)-matched controls (CTRL) participated in this study. After an overnight fast, the subjects underwent a single 40-min bout of aerobic exercise. Muscle samples were obtained from vastus lateralis at baseline and 60 min after exercise...
February 8, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28147324/identification-of-novel-biomarkers-for-prediction-of-neurological-prognosis-following-cardiac-arrest
#20
Jung Woo Eun, Hee Doo Yang, Soo Hyun Kim, Sungyoup Hong, Kyu Nam Park, Suk Woo Nam, Sikyoung Jeong
BACKGROUND: Early prognostication of neurological outcome in comatose patients after cardiac arrest (CA) is important for devising patient treatment strategies. However, there is still a lack of sensitive and specific biomarkers for easy identification of these patients. We evaluated whether molecular signatures from blood of CA patients might help to improve the prediction of neurological outcome. METHODS: We examined 22 comatose patients resuscitated after CA and obtained peripheral blood samples 48 hours after CA...
March 7, 2017: Oncotarget
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