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SP600125 PD98059 SB203580

Rosalina Villalon Landeros, Sheikh O Jobe, Gabrielle Aranda-Pino, Gladys E Lopez, Jing Zheng, Ronald R Magness
Previously we demonstrated that the biologically active metabolites of 17β-oestradiol, 2-hydroxyoestradiol (2-OHE2 ) and 4-hydroxyoestradiol (4-OHE2 ), stimulate pregnancy-specific proliferation of uterine artery endothelial cells derived from pregnant (P-UAECs), but not non-pregnant ewes. However, unlike 17β-oestradiol, which induces proliferation via oestrogen receptor-β (ER-β), the catecholoestradiols mediate P-UAEC proliferation via β-adrenoceptors (β-AR) and independent of classic oestrogen receptors...
April 24, 2017: Journal of Physiology
Mehari Endale, Tae-Hwan Kim, Yi-Seong Kwak, Na-Mi Kim, Seung-Hyung Kim, Jae Youl Cho, Bong-Sik Yun, Man-Hee Rhee
Torilin, a sesquiterpene isolated from the fruits of Torilis japonica, has shown antimicrobial, anticancer, and anti-inflammatory properties. However, data on the mechanism of torilin action against inflammation is limited. This study aimed at determining the anti-inflammatory property of torilin in LPS-induced inflammation using in vitro model of inflammation. We examined torilin's effect on expression levels of inflammatory mediators and cytokines in LPS-stimulated RAW 264.7 macrophages. The involvement of NF-kB and AP-1, MAP kinases, and adaptor proteins were assessed...
2017: Mediators of Inflammation
Sang Weon Lee, Sung Jin Kim, Hyungwoo Kim, Dongki Yang, Hyun Jung Kim, Byung Joo Kim
Interstitial cells of Cajal (ICCs) function as pacemaker cells in the gastrointestinal (GI) tract and therefore, serve an important role in regulating GI motility. The effects of a species of plum (Prunus mume Siebold & Zucc.) on cultured ICC cluster-induced pacemaker potentials in the mouse small intestine were investigated, and the effects of a methanolic extract of Prunus mume (m-PM) on ICC pacemaker activities were examined using the whole-cell patch-clamp technique. ICC pacemaker membrane potentials were depolarized by m-PM in a concentration dependent manner in current clamp mode...
January 2017: Experimental and Therapeutic Medicine
Marwa Y Sallam, Sahar M El-Gowilly, Abdel-Galil A Abdel-Galil, Mahmoud M El-Mas
The immunosuppressant drug cyclosporine A (CSA) improves survivability in endotoxemia and offsets associated loss in vascular reactivity and hypotension. We tested the hypothesis that central phosphoinositide-3-kinase (PI3K)/soluble guanylate cyclase (sGC)/mitogen activated protein kinases (MAPKs) cascade modulates the CSA counteraction of endotoxic hypotension and cardiac autonomic dysfunction. The effects of pharmacologic inhibition of these molecular substrates in central pools on CSA interaction with cardiovascular responses evoked by lipopolysaccharide (LPS) were evaluated in conscious rats...
February 15, 2017: European Journal of Pharmacology
Ai-Rong Su, Min Qiu, Yan-Lei Li, Wen-Tao Xu, Si-Wei Song, Xiao-Hui Wang, Hong-Yong Song, Nan Zheng, Zhi-Wei Wu
BX-795 is an inhibitor of 3-phosphoinositide-dependent kinase 1 (PDK1), but also a potent inhibitor of the IKK-related kinase, TANKbinding kinase 1 (TBK1) and IKKɛ. In this study we attempted to elucidate the molecular mechanism(s) underlying the inhibition of BX-795 on Herpes simplex virus (HSV) replication. HEC-1-A or Vero cells were treated with BX-795 and infected with HSV-1 or HSV-2 for different periods. BX-795 (3.125-25 μmol/L) dose-dependently suppressed HSV-2 replication, and displayed a low cytotoxicity to the host cells...
March 2017: Acta Pharmacologica Sinica
Thanasekaran Jayakumar, Kao-Chang Lin, Wan-Jung Lu, Chia-Ying Lin, Geraldine Pitchairaj, Jiun-Yi Li, Joen-Rong Sheu
Nobiletin, a bioactive polymethoxylated flavone, has been described to possess a diversity of biological effects through its antioxidant and anti-inflammatory properties. Vasodilator-stimulated phosphoprotein (VASP) is a common substrate for cyclic AMP and cyclic GMP-regulated protein kinases [i.e., cyclic AMP-dependent protein kinase (PKA; also known as protein kinase A) and cyclic GMP-dependent protein kinase (PKG; also known as protein kinase G)] and it has been shown to be directly phosphorylated by protein kinase C (PKC)...
January 2017: International Journal of Molecular Medicine
Chang-Bum Ahn, Jae-Young Je, Young-Sang Kim, Sun-Joo Park, Boo Il Kim
Chemical modification of chitosan is a promising method for the improvement of biological activity. In this study, chitosan-caffeic acid (CCA) was prepared and its in vitro hepatoprotective ability against hydrogen peroxide-induced hepatic damage in liver cells was evaluated. Treatment with CCA (50-400 µg/mL) did not show cytotoxicity and also significantly (p < 0.05) recovered cell viability against 650 µM hydrogen peroxide-induced hepatotoxicity. CCA treatment attenuated reactive oxygen species generation and lipid peroxidation in addition to increasing cellular glutathione level in cultured hepatocytes...
January 2017: Molecular and Cellular Biochemistry
Helmut Schweikl, Matthias Widbiller, Stephanie Krifka, Johannes Klement, Christine Petzel, Carola Bolay, Karl-Anton Hiller, Wolfgang Buchalla
OBJECTIVE: Lipopolysaccharide (LPS) from cariogenic microorganisms and resin monomers like HEMA (2-hydroxyethyl methacrylate) included in dentin adhesive are present in a clinical situation in deep dentinal cavity preparations. Here, cell survival, expression of proteins related to redox homeostasis, and viability of mouse macrophages exposed to LPS and HEMA were analyzed with respect to the influence of oxidative stress. METHODS: Cell survival of RAW264.7 mouse macrophages was determined using a crystal violet assay, protein expression was detected by Western blotting, and HEMA- or LPS-induced apoptosis (cell viability) was analyzed by flow cytometry...
December 2016: Dental Materials: Official Publication of the Academy of Dental Materials
Yen-Yu Lu, Yung-Kuo Lin, Yu-Hsun Kao, Cheng-Chih Chung, Yung-Hsin Yeh, Shih-Ann Chen, Yi-Jen Chen
The extracellular matrix (ECM) and transforming growth factor-β (TGF)-β are important in cardiac fibrosis, however, the effects of the ECM on TGF‑β signaling remain to be fully elucidated. The aims of the present study were to evaluate the role of collagen in TGF‑β signaling and examine the underlying mechanisms. In the present study, western blot analysis was used to examine TGF‑β signaling in HL‑1 cells treated with and without (control) type I collagen (10 µg/ml), which was co‑administered with either an anti‑β1 integrin antibody (10 µg/ml) or a stretch‑activated channel inhibitor (gadolinium; 50 µM)...
October 2016: Molecular Medicine Reports
Qi Li, Fuxiang Bao, Dafu Zhi, Moning Liu, Qin Yan, Xinxin Zheng, Lixin Ren, Shan Cong, Yan Li, Guifang Cao
BACKGROUND: Beta defensins are secreted from ovine oviduct epithelial cells (OOECs) in response to microbial infection, and are potential alternatives to antibiotic agents in the treatment of microorganism infection, particularly given the abuse of antibiotic agents and the increasing number of drug-resistant bacteria. The aberrant expression of defensins may result in disorders involving organ and oviduct inflammation, such as salpingitis. METHODS: In the present study, we investigated the effects of LPS on the mRNA expression levels of sheep β-defensin-1 (SBD-1) in ovine oviduct epithelial cells...
August 11, 2016: Lipids in Health and Disease
Takamitsu Sasaki, Keita Inami, Yoshihiro Numata, Kodai Funakoshi, Midori Yoshida, Takeshi Kumagai, Shuichi Kanno, Satomi Matsui, Takayoshi Toriyabe, Yasushi Yamazoe, Kouichi Yoshinari, Kiyoshi Nagata
Multidrug resistance-associated protein 3 (MRP3) is a basolaterally localized transporter in the liver and contributes to the transport of various metabolites such as conjugates of endogenous compounds and drugs from hepatocytes. MRP3 expression in the human liver is low under normal physiologic conditions but is induced by drug treatment. Although several studies have identified a region necessary for the basal transcription of MRP3, no region that responds to drugs has been reported. To identify the xenobiotic-responsive elements of MRP3, we constructed a luciferase reporter plasmid containing the MRP3 5'-flanking region up to -10 kb upstream from the transcription start site...
October 2016: Journal of Pharmacology and Experimental Therapeutics
R Wang, W Zhang, Z Dong, Y Qi, M Hultström, X Zhou, E Y Lai
AIM: Prostaglandin E2 mediates sympathoexcitation in chronic heart failure (CHF) through EP3 receptors (PTGER3) in the paraventricular nucleus (PVN). The aim of this study was to investigate the role of c-Jun N-terminal kinase (JNK) in expressional regulation of gamma-aminobutyric acid signalling in PVN in CHF rats. METHODS: Chronic heart failure was induced by left coronary ligation in Wistar rats. Renal sympathetic nerve discharge (RSND) and mean arterial pressure (MAP) responses to the PVN infusion were determined in anaesthetized rats...
July 20, 2016: Acta Physiologica
Naohiro Yamamoto, Haruhiko Tokuda, Gen Kuroyanagi, Shingo Kainuma, Rie Matsushima-Nishiwaki, Kazuhiko Fujita, Osamu Kozawa, Takanobu Otsuka
Heat shock proteins (HSPs) are induced in response to various physiological and environmental conditions such as chemical and heat stress, and recognized to function as molecular chaperones. HSP22 (HSPB8), a low-molecular weight HSP, is ubiquitously expressed in many cell types. However, the precise role of HSP22 in bone metabolism remains to be clarified. In the present study, we investigated whether HSP22 is implicated in the transforming growth factor-β (TGF-β)-stimulated migration of osteoblast-like MC3T3-E1 cells...
November 15, 2016: Molecular and Cellular Endocrinology
Ji-Yun Park, Beom Su Kim, Jun Lee
Angiogenesis is an essential physiological step in wound healing and other regenerative processes. Here, we evaluated the angiogenic properties of an exopolysaccharide (EPS) secreted by MK1 (MK1-EPS), a novel bacterial strain isolated from Neungee mushrooms. MK1-EPS significantly increased human umbilical vein endothelial cell (HUVEC) proliferation, migration, and vascular tube formation. MK1-EPS enhanced the phosphorylation of extracellular signal-related kinase (ERK), c-Jun N-terminal kinase (JNK), and p38, which are mitogen-activated protein kinases...
September 2016: Archives of Pharmacal Research
Sousuke Kanaya, Hidehiro Komatsu, Hidetoshi Shimauchi, Eiji Nemoto
PURPOSE/AIM: Glutamate is one of the signaling molecules responsible for transmission in the central nervous system. Periodontal ligament (PDL) cells were recently reported to express metabotropic glutamate receptors (mGluRs). However, the functions of mGluR signaling in PDL cells or PDL-related cells remain largely unknown. The aim of this study was to investigate the expression and function of mGluRs in PDL-related cells. MATERIALS AND METHODS: OCCM-30 cells, immortalized murine cementoblasts, were stimulated with l-glutamate or mGluRs antagonists...
September 2016: Connective Tissue Research
Chun Guo, Xu-Guang Yang, Fei Wang, Xu-Yuan Ma
Interleukin (IL)-1 is a proinflammatory cytokine that plays important roles in inflammation and host responses to infection. The present study aimed to evaluate the effects of IL-1α on the apoptosis and differentiation of osteoblasts, and to elucidate the mechanism responsible for these effects in the osteoblast‑like cell line MC3T3-E1. The MC3T3-E1 cells were non-treated or treated with IL-1α. Following treatment, cell viability, alkaline phosphatase (ALP) activity and caspase-3 activity were evaluated...
July 2016: International Journal of Molecular Medicine
Tingfang Yang, Shuluan Yao, Xianfeng Zhang, Yan Guo
T-cell acute lymphoblastic leukemia (T-ALL) as a prevalent hematologic malignancy is one of the most common malignant tumors worldwide in children. Andrographolide (Andro), the major active component from Andrographis paniculata, has been shown to possess antitumor activities in several types of cancer cells. However, whether Andro would inhibit T-ALL cell growth remains unclear. In this study, we investigated the cytotoxic effect of Andro on human T-ALL Jurkat cells and explored the mechanisms of cell death...
2016: Drug Design, Development and Therapy
Marwa Y Sallam, Sahar M El-Gowilly, Abdel-Galil A Abdel-Galil, Mahmoud M El-Mas
Reduced blood pressure (BP) and cardiac autonomic activity are early manifestations of endotoxemia. We investigated whether these effects are modulated by central mitogen-activated protein kinases (MAPKs) and related phosphoinositide-3-kinase (PI3K)/soluble guanylate cyclase (sGC) signaling in conscious rats. The effect of pharmacologic inhibition of these molecular substrates on BP, heart rate (HR), and heart rate variability (HRV) responses evoked by intravascular lipopolysaccharide (LPS) (10 mg/kg) were assessed...
August 2016: Journal of Cardiovascular Pharmacology
Shin-Saeng Lim, Sung-Ho Kook, Jeong-Chae Lee
Recombinant COMP-Ang1, a chimera of angiopoietin-1 (Ang1), and a short coiled-coil domain of cartilage oligomeric matrix protein (COMP) can stimulate multiple cellular processes. Proliferative capacity of periodontal ligament (PDL) fibroblasts (PLFs) is important for maintaining PDL integrity and homeostasis. In this study, we explored whether exogenous COMP-Ang1 addition enhances proliferation of human PLFs and the cellular mechanisms therein. We initially isolated and characterized PLFs, where the cells showed highly positive staining for surface markers, CD90, CD105, and CD146...
May 2016: Molecular and Cellular Biochemistry
Ningning Dang, Shuguang Pang, Haiyan Song, Liguo An, Xiaoli Ma
OBJECTIVES: Several investigations have revealed that caspase-14 is responsible for the epidermal differentiation and cornification, as well as the regulation of moisturizing effect. However, the precise regulation mechanism is still not clear. This study was aimed to investigate the expression of caspase-14 in filaggrin-deficient normal human epidermal keratinocytes (NHEKs) and to explore the possible mechanism that contributes to the regulation of caspase-14. MATERIALS AND METHODS: The filaggrin-deficient NHEKs were induced by transfection with lentivirus (LV) vector encoding small hairpin RNAs (shRNA)...
January 2016: Iranian Journal of Basic Medical Sciences
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