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https://www.readbyqxmd.com/read/28315333/triiodothyronine-promotes-the-proliferation-of-epicardial-progenitor-cells-through-the-mapk-erk-pathway
#1
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...
March 14, 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
#2
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
#3
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
#4
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)...
November 17, 2016: 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
#5
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
#6
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
#7
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
#8
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 4 body controls subjects (CTRL) participated in this study. After an overnight fast, the subjects underwent a single 40-minute bout of aerobic exercise. Muscle samples were obtained from vastus lateralis at baseline and 60 minutes 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
#9
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...
January 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28130552/melatonin-micronutrients-osteopenia-treatment-study-mots-a-translational-study-assessing-melatonin-strontium-citrate-vitamin-d3-and-vitamin-k2-mk7-on-bone-density-bone-marker-turnover-and-health-related-quality-of-life-in-postmenopausal-osteopenic-women-following
#10
Sifat Maria, Mark H Swanson, Larry T Enderby, Frank D'Amico, Brianna Enderby, Rebekah M Samsonraj, Amel Dudakovic, Andre J van Wijnen, Paula A Witt-Enderby
This one-year double blind randomized control trial assessed the effects of nightly melatonin, strontium (citrate), vitamin D3 and vitamin K2 (MK7; MSDK) on bone mineral density (BMD) and quality of life (QOL) in postmenopausal osteopenic women (ages 49-75). Compared to placebo, MSDK treatment increased BMD in lumbar spine (4.3%) and left femoral neck (2.2%), with an upward trend for total left hip (p=0.069). MSDK increased serum P1NP levels and reduced bone turnover (CTx:P1NP). Psychometric analyses indicated that mood and sleep quality improved for the MSDK group...
January 26, 2017: Aging
https://www.readbyqxmd.com/read/28111288/oscerk1-mediated-chitin-perception-and-immune-signaling-requires-receptor-like-cytoplasmic-kinase-185-to-activate-a-mapk-cascade-in-rice
#11
Chao Wang, Gang Wang, Chi Zhang, Pinkuan Zhu, Huiling Dai, Nan Yu, Zuhua He, Ling Xu, Ertao Wang
Conserved pathogen-associated molecular patterns (PAMPs), such as chitin, are perceived by pattern recognition receptors (PRRs) located at the host cell surface and trigger rapid activation of mitogen-activated protein kinase (MAPK) cascades, which is required for plant resistance to pathogens. However, the direct link from PAMP perception to MAPK activation in plants is elusive. Here, we found that the PRR-associated receptor-like cytoplasmic kinase Oryza sativa RLCK185 transmits immune signaling from the PAMP receptor OsCERK1 to a MAPK signaling cascade through interaction with a MAPK kinase kinase, OsMAPKKKε, which is the initial kinase of the MAPK cascade...
January 19, 2017: Molecular Plant
https://www.readbyqxmd.com/read/28078543/topiramate-confers-neuroprotection-against-methylphenidate-induced-neurodegeneration-in-dentate-gyrus-and-ca1-regions-of-hippocampus-via-creb-bdnf-pathway-in-rats
#12
Majid Motaghinejad, Manijeh Motevalian, Mohammad Abdollahi, Mansour Heidari, Zahra Madjd
Methylphenidate (MPH) abuse can cause serious neurological damages. The neuroprotective effects of topiramate (TPM) have been reported already, but its mechanism of action still remains unclear. The current study evaluates in vivo role of CREB/BDNF in TPM protection of the rat hippocampal cells from methylphenidate-induced apoptosis, oxidative stress, and inflammation. A total of 60 adult male rats were divided into six groups. Groups 1 and 2 received normal saline (0.7 ml/rat) and MPH (10 mg/kg) respectively for 14 days...
April 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28045574/autophagy-and-krt8-keratin-8-protect-degeneration-of-retinal-pigment-epithelium-under-oxidative-stress
#13
Ahruem Baek, Soojin Yoon, Jean Kim, Yu Mi Baek, Hanna Park, Daehan Lim, Hyewon Chung, Dong-Eun Kim
Contribution of autophagy and regulation of related proteins to the degeneration of retinal pigment epithelium (RPE) in age-related macular degeneration (AMD) remain unknown. We report that upregulation of KRT8 (keratin 8) as well as its phosphorylation are accompanied with autophagy and attenuated with the inhibition of autophagy in RPE cells under oxidative stress. KRT8 appears to have a dual role in RPE pathophysiology. While increased expression of KRT8 following autophagy provides a cytoprotective role in RPE, phosphorylation of KRT8 induces pathologic epithelial-mesenchymal transition (EMT) of RPE cells under oxidative stress, which is mediated by MAPK1/ERK2 (mitogen-activated protein kinase 1) and MAPK3/ERK1...
February 2017: Autophagy
https://www.readbyqxmd.com/read/27942580/genetic-variation-in-the-insulin-insulin-like-growth-factor-growth-hormone-and-leptin-pathways-in-relation-to-breast-cancer-in-african-american-women-the-amber-consortium
#14
Edward A Ruiz-Narváez, Kathryn L Lunetta, Chi-Chen Hong, Stephen Haddad, Song Yao, Ting-Yuan David Cheng, Jeannette T Bensen, Elisa V Bandera, Christopher A Haiman, Melissa A Troester, Christine B Ambrosone, Lynn Rosenberg, Julie R Palmer
The insulin/insulin-like growth factor (IGF) system and related pathways such as growth hormone, and leptin signaling have a key role in cancer development. It is unclear how germline variation in these pathways affects breast cancer risk. We conducted gene-based analyses of 184 genes in the insulin/IGF, growth hormone, and leptin pathways to identify genetic variation associated with risk of breast cancer overall, and for estrogen receptor (ER) subtypes. Tag single-nucleotide polymorphisms (SNPs) for each gene were selected and genotyped on a customized Illumina SNP array...
2016: NPJ Breast Cancer
https://www.readbyqxmd.com/read/27936391/contrary-influence-of-clinically-applied-sorafenib-concentrations-among-hepatocellular-carcinoma-patients
#15
Zu-Yau Lin, Wan-Long Chuang
The treatment responses of sorafenib in hepatocellular carcinoma are modest which may be due to different characteristics of cancer cells or insufficient therapeutic concentrations. This study was to clarify this issue. The anti-proliferative effects and differential expressions of 8 genes related to sorafenib anti-cancer mechanisms (tyrosine kinase receptor genes: KDR, PDGFRB; RAF cascade: RAF1, BRAF, MAP2K1, MAP2K2, MAPK1, MAPK3) were investigated in primary cultured hepatocellular carcinoma cells collected from 8 patients using clinically applied sorafenib concentrations (5, 10μg/mL)...
February 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27917343/a-new-bioinformatic-insight-into-the-associated-proteins-in-psychiatric-disorders
#16
Wenlong Zhao, Wenjing Yang, Shuanglin Zheng, Qiong Hu, Ping Qiu, Xinghua Huang, Xiaoqian Hong, Fenghua Lan
BACKGROUND: Psychiatric diseases severely affect the quality of patients' lives and bring huge economic pressure to their families. Also, the great phenotypic variability among these patients makes it difficult to investigate the pathogenesis. Nowadays, bioinformatics is hopeful to be used as an effective tool for the diagnosis of psychiatric disorders, which can identify sensitive biomarkers and explore associated signaling pathways. METHODS: In this study, we performed an integrated bioinformatic analysis on 1945 mental-associated proteins including 91 secreted proteins and 593 membrane proteins, which were screened from the Universal Protein Resource (Uniport) database...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27862280/melatonin-is-required-for-h2-o2-and-no-mediated-defense-signaling-through-mapkkk3-and-oxi1-in-arabidopsis-thaliana
#17
Hyoung Yool Lee, Kyoungwhan Back
Melatonin influences plant innate immunity through the mitogen-activated protein kinase (MAPK) pathway. However, the most upstream MAPK component in melatonin signaling and the dependence of generation of a reactive oxygen species (ROS) burst on melatonin synthesis and signaling remain unclear. In this study, treatment of several mekk (alias mapkkk)-knockout Arabidopsis mutants with melatonin revealed that the MAPKKK3 and OXI1 (oxidative signal-inducible1) kinases are responsible for triggering melatonin-induced defense signaling pathways...
November 18, 2016: Journal of Pineal Research
https://www.readbyqxmd.com/read/27846039/activation-of-igf1-signaling-in-the-cochlea-induces-the-transcription-of-its-mediators-during-the-protection-of-cochlear-hair-cells-against-aminoglycoside
#18
Yushi Hayashi, Norio Yamamoto, Takayuki Nakagawa, Koichi Omori, Juichi Ito
HYPOTHESIS: Transcription of the Erk and Akt genes and phosphorylation of their products are promoted by insulin-like growth factor 1 (IGF1) during hair cell protection. BACKGROUND: IGF1 protects mammalian hair cells in animal models from various types of damage, including aminoglycoside. Moreover, clinical trials have revealed that IGF1 was effective for idiopathic sudden sensorineural hearing loss. In this process, activation of the downstream of IGF1 signaling, including the phosphorylation of extracellular signal-regulated kinase (ERK) and AKT proteins, is involved...
November 14, 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/27770611/creb-activity-is-required-for-luteinizing-hormone-induced-the-expression-of-egf-like-factors
#19
Yakun Wang, Xiaoqiong Hao, Jing Yang, Jia Li, Meijia Zhang
A surge of luteinizing hormone (LH) from the pituitary gland induces the expression of the epidermal growth factor (EGF)-like factors, which triggers oocyte maturation, cumulus expansion, and ovulation. How LH induces EGF-like factor expression is unclear. In the present study, a rapid increase of phosphorylated cAMP response element binding protein (CREB) was observed after the activation of LH receptor by human chorionic gonadotropin. Large antral follicles from equine chorionic gonadotropin-primed mice were cultured in medium with LH to stimulate the expression of EGF-like factors...
December 2016: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/27765951/hypoxia-inducible-factor-2-alpha-promotes-the-proliferation-of-human-placenta-derived-mesenchymal-stem-cells-through-the-mapk-erk-signaling-pathway
#20
Chengxing Zhu, Jiong Yu, Qiaoling Pan, Jinfeng Yang, Guangshu Hao, Yingjie Wang, Lanjuan Li, Hongcui Cao
Human placenta-derived mesenchymal stem cells (hPMSCs) reside in a physiologically low-oxygen microenvironment. Hypoxia influences a variety of stem cell cellular activities, frequently involving hypoxia-inducible factor-2 alpha (HIF-2α). This research showed that hPMSCs cultured in hypoxic conditions (5% O2) exhibited a more naïve morphology and had a higher proliferative capability and higher HIF-2α expression than hPMSCs cultured in normoxic conditions (21% O2). Similar to the hypoxic cultures, hPMSCs over-expressing HIF-2α showed higher proliferative potential and higher expression of CCND1 (CyclinD1), MYC (c-Myc), POU5F1 (Oct4) and the components of the MAPK/ERK pathway...
October 21, 2016: Scientific Reports
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