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https://www.readbyqxmd.com/read/28735097/protecting-the-heart-through-mk2-modulation-toward-a-role-in-diabetic-cardiomyopathy-and-lipid-metabolism
#1
REVIEW
Matthieu Ruiz, Lise Coderre, Bruce Gordon Allen, Christine Des Rosiers
Various signaling pathways have been identified in the heart as important players during development, physiological adaptation or pathological processes. This includes the MAPK families, particularly p38MAPK, which is involved in several key cellular processes, including differentiation, proliferation, apoptosis, inflammation, metabolism and survival. Disrupted p38MAPK signaling has been associated with several diseases, including cardiovascular diseases (CVD) as well as diabetes and its related complications...
July 19, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28734766/trpv1-modulates-morphine-induced-conditioned-place-preference-via-p38-mapk-in-the-nucleus-accumbens
#2
Sa-Ik Hong, Thi-Lien Nguyen, Shi-Xun Ma, Hyoung-Chun Kim, Seok-Yong Lee, Choon-Gon Jang
Emerging evidence suggests that the transient receptor potential vanilloid type 1 channel (TRPV1) is a novel target for the treatment of drug addiction, such as cocaine and morphine. Previously we reported that TRPV1 inhibition reduced morphine reward in the dorsal striatum (DSt) of mice and morphine self-administration through a decrease in accumbal activity in rats. However, the role of TRPV1 on morphine-conditioned reward in addiction-related brain regions, such as the nucleus accumbens (NAc), has not been previously established...
July 19, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28734225/adverse-effects-of-methylmercury-mehg-on-life-parameters-antioxidant-systems-and-mapk-signaling-pathways-in-the-rotifer-brachionus-koreanus-and-the-copepod-paracyclopina-nana
#3
Young Hwan Lee, Duck-Hyun Kim, Hye-Min Kang, Minghua Wang, Chang-Bum Jeong, Jae-Seong Lee
To evaluate the adverse effects of MeHg on the rotifer Brachionus koreanus and the copepod Paracyclopina nana, we assessed the effects of MeHg toxicity on life parameters (e.g. growth retardation and fecundity), antioxidant systems, and mitogen-activated protein kinase (MAPK) signaling pathways at various concentrations (1ng/L, 10ng/L, 100ng/L, 500ng/L, and 1000ng/L). MeHg exposure resulted in the growth retardation with the increased ROS levels but decreased glutathione (GSH) levels in a dose-dependent manner in both B...
July 12, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28734155/activation-of-mtor-is-involved-in-anti-%C3%AE-2gpi-%C3%AE-2gpi-induced-expression-of-tissue-factor-and-il-8-in-monocytes
#4
Longfei Xia, Hong Zhou, Ting Wang, Yachao Xie, Ting Wang, Xiaoyan Wang, Jinchuan Yan
Previous study has demonstrated that activation of the mammalian target of rapamycin (mTOR) pathway in endothelial cells (ECs) results in the formation of chronic vascular lesions associated with antiphospholipid syndrome (APS). In addition, it has been shown that stimulation of monocytes and ECs by antiphospholipid antibodies (aPL) leads to a prothrombotic and proinflammatory state and up-regulated expression of tissue factor (TF) and inflammatory cytokines. However, the role of mTOR in pathogenic mechanisms of APS remains largely unexplored...
June 1, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28733527/effects-of-chinese-herbal-medicines-on-the-occurrence-of-diabetic-retinopathy-in-type-2-diabetes-patients-and-protection-of-arpe-19-retina-cells-by-inhibiting-oxidative-stress
#5
Fuu-Jen Tsai, Te-Mao Li, Cheng-Hang Ko, Chi-Fung Cheng, Tsung-Jung Ho, Xiang Liu, Hsinyi Tsang, Ting-Hsu Lin, Chiu-Chu Liao, Ju-Pi Li, Shao-Mei Huang, Jung-Chun Lin, Chih-Chien Lin, Wen-Miin Liang, Ying-Ju Lin
Diabetic retinopathy is a microvascular complication of type 2 diabetes and the leading cause of acquired blindness. In Taiwan, Chinese herbal medicine (CHM) is a popular adjunctive therapy. In this study, we investigated the CHM prescription patterns and their effects. We identified 23,701 subjects with type 2 diabetes in a database, and after matching for age and gender, 6,948 patients each were assigned to CHM and non-CHM groups. In the female subgroups, the cumulative retinopathy probability was lower for the CHM users than that for the CHM non-users (P < 0...
June 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28733084/reciprocal-regulation-of-%C3%AE-2-adrenoceptor-activated-camp-response-element-binding-protein-signalling-by-arrestin2-and-arrestin3
#6
Alexander Pearce, Lucy Sanders, Paul J Brighton, Shashi Rana, Justin C Konje, Jonathon M Willets
Activation of Gs coupled receptors (e.g. β2-adrenoreceptor (β2AR)) expressed within the uterine muscle layer (myometrium), promotes intracellular cAMP generation, inducing muscle relaxation through short-term inhibition of contractile proteins, and longer-term modulation of cellular phenotype to promote quiescence. In the myometrium cAMP-driven modulation of cell phenotype is facilitated by CREB activity, however despite the importance of CREB signalling in the promotion of myometrial quiescence during pregnancy, little is currently known regarding the molecular mechanisms involved...
July 18, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28731168/osteoclast-regulation-of-osteoblasts-via-rank%C3%A2-rankl-reverse-signal-transduction-in%C3%A2-vitro
#7
Shiqian Zhang, Xiaoyu Wang, Guojun Li, Yang Chong, Jie Zhang, Xinzhen Guo, Baoxin Li, Zhenggang Bi
The treatment of osteoporosis typically inhibits the activity of osteoclasts, which subsequently results in the suppression of bone formation and maintenance, however the underlying mechanism remains to be elucidated. The receptor activator of nuclear factor κ‑B ligand (RANKL)‑receptor activator of nuclear factor κ‑B (RANK) signaling axis is important in the osteoblast regulation of osteoclasts. RANKL surface‑bound molecules expressed on T cells stimulate a reverse signaling transduction in order to regulate the T cells, therefore the present study hypothesized that RANKL expressed on osteoblasts may transfer reverse signals to regulate osteoblasts...
July 20, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28731135/multi-glycoside-of-tripterygium-wilfordii-hook-%C3%A2-f-attenuates-glomerulosclerosis-in-a-rat-model-of-diabetic-nephropathy-by-exerting-anti-microinflammatory-effects-without-affecting-hyperglycemia
#8
Wei Wu, Jing-Jing Yang, Hai-Ming Yang, Meng-Meng Huang, Qi-Jun Fang, Ge Shi, Zhi-Min Mao, Wen-Bei Han, Shan-Mei Shen, Yi-Gang Wan
Multi-glycoside of Tripterygium wilfordii Hook. f. (GTW) has been proven to be clinically effective in relieving microinflammation in patients with early diabetic nephropathy (DN). However, the therapeutic mechanisms involved in vivo remain unclear. In the process of early DN, microinflammation and activation of p38 mitogen‑activated protein kinase (MAPK) and canonical nuclear factor (NF)-κB signaling pathways are the important mechanisms by which hyperglycemia contributes to glomerulosclerosis (GS)...
July 17, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28730859/molecular-targeting-of-inosine-5-monophosphate-dehydrogenase-by-ff-10501-promotes-erythropoiesis-via-ros-mapk-pathway
#9
Michiko Ichii, Kenji Oritani, Motohiko Murase, Kensuke Komatsu, Mao Yamazaki, Rie Kyoden, Nobuko Kito, Yusuke Nozaki, Motoki Saito, Hiroyuki Iwamura, Yuzuru Kanakura
One of the major symptoms of myelodysplastic syndromes (MDS) is severe cytopenia. Despite cytokine therapies, such as erythropoiesis-stimulating agents, many patients still require blood transfusions, and the development of new therapeutic approaches is needed. In this work, we studied the effects of the inosine-5'-monophosphate (IMP) dehydrogenase (IMPDH) inhibitor FF-10501 on erythropoiesis of human hematopoietic cells. Differentiation of K562 chronic myeloid leukemia cells to an erythroid lineage was promoted by FF-10501 in a dose-dependent manner...
July 21, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28730778/study-on-the-effect-of-integrin-%C3%AE-%C3%AE-%C3%AE-6-on-the-proliferation-and-apoptosis-of-thyroid-carcinoma-cells
#10
Zhilong Tian, Hailin Xi, Xiaokai Wang, Su Feng, Gaolei Jia
PURPOSE: To study the effect of integrin αvβ6 on the proliferation and apoptosis of thyroid carcinoma cells. METHODS: The experiment was conducted on 3 groups : the control group, the positive observation group (in which the ανβ6 on the surface of the thyroid carcinoma cell line SW579 was blocked by monoclonal antibody 10D5) and the negative observation group (in which the ανβ6 was dealt with the negative placebo of 10D5-the IgG2a). Cell proliferation was detected by MTT assay, apoptosis by flow cytometry and the protein levels in Caspase-3, CyclinB1 and Bcl-xl as well as the protein levels in ERK, p-ERK, JNK, p-JNK, p38 and p-p38 were detected by Western blot...
May 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28730511/intermediate-molecular-mass-hyaluronan-and-cd44-receptor-interactions-enhance-neutrophil-phagocytosis-and-il-8-production-via-p38-and-erk1-2-mapk-signalling-pathways
#11
Cheng-Hsun Lu, Chia-Huei Lin, Ko-Jen Li, Chieh-Yu Shen, Cheng-Han Wu, Yu-Min Kuo, Ting-Syuan Lin, Chia-Li Yu, Song-Chou Hsieh
CD44 is a common leukocyte adhesion molecule expressed on the surface of various cells. Hyaluronan (HA), the natural ligand of CD44, is a simple repeated disaccharide with variable molecular mass that is widely distributed on cell surfaces and the connective tissue matrix. The binding of small molecular mass HA (SMM-HA, MW < 80 kDa) to CD44 on immune-related cells elicits cell proliferation, differentiation, and cytokine production. However, the effects and molecular basis of intermediate molecular mass HA (IMM-HA, MW ≈ 500 kDa)-CD44 interactions on polymorphonuclear neutrophil (PMN) functions have not been elucidated...
July 20, 2017: Inflammation
https://www.readbyqxmd.com/read/28730070/inhibition-effect-of-curcumin-on-uvb-induced-secretion-of-pro-inflammatory-cytokines-from-corneal-limbus-epithelial-cells
#12
Shih-Chun Chao, Dan-Ning Hu, Joan Roberts, Xilun Shen, Chia-Yi Lee, Chan-Wei Nien, Hung-Yu Lin
AIM: To study the effects of curcumin on the secretion of interleukin (IL)-6 and IL-8 by corneal limbus epithelial cells. METHODS: Human corneal limbus epithelial cells were isolated and cultured from donor eyes and irradiated by UVB at different dosages with or without curcumin. MTT test was used for studying the effects of UVB and curcumin on the cell viability. The role of mitogen-activated protein kinase (MAPK) and nuclear factor-kappa B (NF-κB) pathways on the UVB-induced secretion of IL-6 and IL-8 were tested by addition of their inhibitors to the culture with or without UVB-radiation...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28729634/novel-intraperitoneal-treatment-with-non-thermal-plasma-activated-medium-inhibits-metastatic-potential-of-ovarian-cancer-cells
#13
Kae Nakamura, Yang Peng, Fumi Utsumi, Hiromasa Tanaka, Masaaki Mizuno, Shinya Toyokuni, Masaru Hori, Fumitaka Kikkawa, Hiroaki Kajiyama
Non-thermal atmospheric pressure plasma has been proposed as a new therapeutic tool for cancer treatment. Recently, plasma-activated medium (PAM) has been widely studied in various cancer types. However, there are only few reports demonstrating the anti-tumour effects of PAM in an animal model reflecting pathological conditions and the accompanying mechanism. Here we investigated the inhibitory effect of PAM on the metastasis of ovarian cancer ES2 cells in vitro and in vivo. We demonstrated that ES2 cell migration, invasion and adhesion were suppressed by PAM at a certain PAM dilution ratio, whereas cell viability remained unaffected...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729303/amotosalen-uva-pathogen-inactivation-technology-reduces-platelet-activatability-induces-apoptosis-and-accelerates-clearance
#14
Simona Stivala, Sara Gobbato, Laura Infanti, Martin F Reiner, Nicole Bonetti, Sara C Meyer, Giovanni G Camici, Thomas F Lüscher, Andreas Buser, Jürg H Beer
Amotosalen and ultraviolet A photochemical-based pathogen reduction using the InterceptTM Blood System is an effective and established technology for platelet and plasma components, which is adopted in more than 40 countries worldwide. Several reports point towards a reduced platelet function after Amotosalen/UVA exposure. The current study was undertaken to identify the mechanisms responsible for the early impairment of platelet function by the InterceptTM Blood System. Twenty-five platelet apheresis units were collected from healthy volunteers following standard procedures and split into 2 components, one untreated and the other treated with Amotosalen/UVA...
July 20, 2017: Haematologica
https://www.readbyqxmd.com/read/28729222/antiallodynic-effect-of-%C3%AE-caryophyllene-on-paclitaxel-induced-peripheral-neuropathy-in-mice
#15
Gabriela C Segat, Mariane N Manjavachi, Daiane O Matias, Giselle F Passos, Cristina Setim Freitas, Robson Costa, João B Calixto
Painful peripheral neuropathy is a common side effect of paclitaxel (PTX). The use of analgesics is an important component for management of PTX-induced peripheral neuropathy (PINP). However, currently employed analgesics have several side effects and are poorly effective. β-caryophyllene (BCP), a dietary selective CB2 agonist, has shown analgesic effect in neuropathic pain models, but its role in chemotherapy-induced neuropathic pain has not yet been investigated. Herein, we used the mouse model of PINP to show the therapeutic effects of BCP in this neuropathy...
July 17, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28724379/regulation-of-glucose-uptake-in-lymphoma-cell-lines-by-c-myc-and-pi3k-dependent-signaling-pathways-and-impact-of-glycolytic-pathways-on-cell-viability
#16
Martina Broecker-Preuss, Nina Becher-Boveleth, Andreas Bockisch, Ulrich Dührsen, Stefan Müller
BACKGROUND: Changes in glucose and energy metabolism contribute to the altered phenotype of cancer cells and are the basis for positron emission tomography with (18)F-fluoro-2-deoxy-D-glucose (FDG) to visualize tumors in vivo. The molecular background of the enhanced glucose uptake and its regulation in lymphoma cells is not fully clarified and may provide new possibilities to reverse the altered metabolism. Thus in this study we investigated regulation of glucose uptake by different signaling pathways...
July 19, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28724214/potential-protective-effects-of-alpha-pinene-against-cytotoxicity-caused-by-aspirin-in-the-iec-6-cells
#17
Hafsia Bouzenna, Najla Hfaiedh, Marie-Agnès Giroux-Metges, Abdelfattah Elfeki, Hélène Talarmin
Alpha-pinene is a key compound of the essential oils extracted from many species of coniferous trees. It is known for its biological activities. The aim of the present study was to determine the preventive effect of alpha-pinene on aspirin-induced toxicity in vitro, using IEC-6 cells, and to investigate its antioxidant activities. The antioxidant activities were determined by 1,1-diphenyl-2-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP). The cytotoxicity and oxidative stress were detected by cell viability, antioxidant enzyme activity, malondialdehyde (MDA) and GSH production, and the activation of MAPK pathways...
July 14, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28722223/the-role-of-%C3%AE-adrenergic-receptors-and-p38mapk-signaling-pathways-in-physiological-processes-of-cardiosphere-derived-cells
#18
Wen-Bo Zhang, Yun-Qi Liu, Xi Zhang, Lin Lin, Sheng-Li Yin
The effects of β adrenergic receptors (β-ARs) and p38 mitogen-activated protein kinases (MAPK) pathways on cardiosphere-derived cells (CDCs) are largely unknown. This study aimed to investigate the roles of β-ARs and p38MAPK pathways on the proliferation, apoptosis and differentiation capacity of CDCs. The CDCs were treated with β1-AR blocker (Met group), β2-AR antagonist (ICI group) and p38MAPK inhibitor (SB group), nonselective β-AR blocker (PRO group), and β-AR agonist (ISO group). The viability, apoptotic rate and differentiation status of CDCs were determined by MST-1 assay, flow cytometery, and Western blot, respectively...
July 19, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28721018/salidroside-pretreatment-attenuates-apoptosis-and-autophagy-during-hepatic-ischemia-reperfusion-injury-by-inhibiting-the-mitogen-activated-protein-kinase-pathway-in-mice
#19
Jiao Feng, Qinghui Zhang, Wenhui Mo, Liwei Wu, Sainan Li, Jingjing Li, Tong Liu, Shizan Xu, Xiaoming Fan, Chuanyong Guo
Ischemia-reperfusion injury (IRI) contributes to liver damage in many clinical situations, such as liver resection and liver transplantation. In the present study, we investigated the effects of the antioxidant, anti-inflammatory, and anticancer agent salidroside (Sal) on hepatic IRI in mice. The mice were randomly divided into six groups: normal control, Sham, Sal (20 mg/kg), IRI, IRI + Sal (10 mg/kg), and IRI + Sal (20 mg/kg). We measured liver enzymes, proinflammatory cytokines, TNF-α and interleukin-6, and apoptosis- and autophagy-related marker proteins at 2, 8, and 24 hours after reperfusion...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28720813/a-new-prenylated-flavonoid-induces-g0-g1-arrest-and-apoptosis-through-p38-jnk-mapk-pathways-in-human-hepatocellular-carcinoma-cells
#20
Di Wang, Qian Sun, Jie Wu, Wei Wang, Guodong Yao, Tianyang Li, Xue Li, Lingzhi Li, Yan Zhang, Wei Cui, Shaojiang Song
Prenylated flavonoids have been demonstrated to possess diverse bioactivities including antitumor effects. One new, daphnegiravone D (1), and four known (2-5) prenylated flavonoids were isolated from Daphne giraldii. Their cytotoxic activities revealed that daphnegiravone D markedly inhibited the proliferation of cancer cells, but had no apparent cytotoxicity on human normal cells. Mechanistically, daphnegiravone D induced G0/G1 arrest and apoptosis, reduced the expression of cyclin E1, CDK2 and CDK4, and promoted the cleavage of caspase 3 and PARP in Hep3B and HepG2 cells...
July 18, 2017: Scientific Reports
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