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https://www.readbyqxmd.com/read/29228451/rg108-induces-the-apoptosis-of-endometrial-cancer-ishikawa-cell-lines-by-inhibiting-the-expression-of-dnmt3b-and-demethylation-of-hmlh1
#1
L Yang, J Hou, X-H Cui, L-N Suo, Y-W Lv
OBJECTIVE: The effects of DNA methyltransferase (DNMT) inhibitor RG108 on the proliferation and apoptosis of endometrial cancer was investigated, and whether its mechanism was related to the inhibition of DNMT3B, thereby affecting the human mutL homolog 1 (hMLH1) methylation status and its expression, was further studied. MATERIALS AND METHODS: Culture of human endometrial cancer Ishikawa cell lines: cells grew adhering to the wall in Roswell Park Memorial Institute-1640 (RPMI-1640) medium (supplemented with 10% fetal bovine serum (FBS) and 2 mM L-glutamic acid)...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29228430/mediation-of-inflammation-obesity-and-fatty-liver-disease-by-advanced-glycation-endoproducts
#2
D-D Xiong, M Zhang, N Li, J-F Gai, L Mao, M Li
OBJECTIVE: Fatty liver may induce various complications including chronic hepatitis or liver cirrhosis, and is frequently occurred in obesity individuals. Advanced glycosylation end products (AGEs) were known to play a critical role in multiple liver diseases. This study, therefore, aimed to study the effect of AGEs on obesity, related liver cirrhosis and inflammation, on an obesity fatty liver rat model. MATERIALS AND METHODS: A total of 60 Sprague Dawley (SD) rats were randomly divided into control, model and AGEs inhibitor groups (n=20 each)...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29228428/inhibition-of-mmps-cat-g-and-downregulates-the-signaling-of-tgf-%C3%AE-smad-in-chronic-photodamaged-human-fibroblasts
#3
Y Zheng, Q-F Xu, H-Y Chen, C-X Ye, W Lai, H I Maibach
OBJECTIVE: To understand the action of Cathepsin G (Cat G) and matrix metalloproteases (MMPs) on the β/Smad pathway of transforming growth factor β (TGF-β) in chronically photodamaged human fibroblasts. Cat G plays a significant role in the process of skin photoaging and in collagen synthesis and degradation which is induced by UV irradiation it could interact with TGF-β/Smad signaling. No available studies have thoroughly explored its molecular mechanisms of photoaging regulation...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29228427/mir-155-regulates-lymphoma-cell-proliferation-and-apoptosis-through-targeting-socs3-jak-stat3-signaling-pathway
#4
X-D Li, X-M Li, J-W Gu, X-C Sun
OBJECTIVE: Janus kinase (JAK)- signal transducer and activator of transcription (STAT) signaling pathway participates in regulating cell proliferation, differentiation, and apoptosis, and related to lymphoma. Suppressors of cytokine signaling 3 (SOCS3) is a negative regulator of the JAK-STAT signaling pathway. SOCS3 reduction and miR-155 up-regulation are associated with lymphoma pathogenesis. Bioinformatics analysis showed the complementary binding site between miR-155 and SOCS3. This study aimed to investigate the role of miR-155 in regulating SOCS3/JAK-STAT signaling pathway and affecting diffuse large B cell lymphoma (DLBCL) cell proliferation and apoptosis...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29228421/mir-377-suppresses-cell-proliferation-and-metastasis-in-gastric-cancer-via-repressing-the-expression-of-vegfa
#5
C-Q Wang, L Chen, C-L Dong, Y Song, Z-P Shen, W-M Shen, X-D Wu
OBJECTIVE: In recent years, microRNAs have been identified to participate in tumor genesis and progression of different tumors including gastric cancer. However, the role of miR-377 played in gastric cancer (GC), and its mechanisms have not been demonstrated. PATIENTS AND METHODS: We detected miR-377 expression level in 86 GC and adjacent normal tissue samples by quantitative reverse transcription PCR (qRT-PCR) as well as in GC cell lines. The relationship between miR-377 and clinical pathological features was analyzed...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29228391/arsenic-attenuates-heparin-binding-egf-like-growth-factor-egfr-signalling-that-promotes-matrix-metalloprotease-9-dependent-astrocyte-damage-in-the-developing-rat-brain
#6
Rajesh Kushwaha, Juhi Mishra, Sachin Tripathi, Waseem Raza, Kapil Mandrah, Somendu Kumar Roy, Sanghamitra Bandyopadhyay
We earlier reported that exposure to arsenic at concentrations in ground water of India attenuated glial fibrillary acidic protein (GFAP) during brain development. Here, we validated the effects and explored mechanism in cultured astrocytes and developing rat brain. We hypothesized participation of epidermal growth factor receptor (EGFR), known to regulate GFAP. We found that arsenic inactivated EGFR, marked by reduced phospho-EGFR in astrocytes. Screening EGFR ligands revealed an arsenic-mediated attenuation in cellular and secreted-Heparin-binding EGF-like growth factor (HB-EGF)...
December 7, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29228388/caspase-inhibition-reduces-hepatic-tissue-factor-driven-coagulation-in-vitro-and-in-vivo
#7
Anna K Kopec, Alfred P Spada, Patricia C Contreras, Nigel Mackman, James P Luyendyk
Tissue factor (TF) is the primary activator of the blood coagulation cascade. Liver parenchymal cells (i.e., hepatocytes) express TF in a molecular state that lacks procoagulant activity. Hepatocyte apoptosis is an important feature of acute and chronic liver diseases, and Fas-induced apoptosis increases hepatocyte TF procoagulant activity in vitro. We determined the impact of a pan-caspase inhibitor, IDN-7314, on hepatocyte TF activity in vitro and TF-mediated coagulation in vivo. Treatment of primary mouse hepatocytes with the Fas death receptor ligand (Jo2, 0...
December 7, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29228365/notch4-negatively-regulates-the-inflammatory-response-to-mycobacterium-tuberculosis-infection-by-inhibiting-tak1-activation
#8
Ruijuan Zheng, Haipeng Liu, Yilong Zhou, Dapeng Yan, Jianxia Chen, Dapeng Ma, Yonghong Feng, Lianhua Qin, Feng Liu, Xiaochen Huang, Jie Wang, Baoxue Ge
Tuberculosis (TB) caused by Mycobacterium tuberculosis (Mtb) infection remains a global threat to human health, but knowledge of the molecular mechanisms underlying the pathogenesis of TB is still limited. Although Notch4, a member of the Notch receptor family, is involved in the initiation of mammary tumors, its function in Mtb infection remains unclear. In this study, we found that Notch4-deficient mice were more resistant to Mtb infection with a much lower bacterial burden and less pathological changes in the lungs...
December 8, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29228347/exposure-of-mice-to-1-2-dichloropropane-induces-cyp450-dependent-proliferation-and-apoptosis-of-cholangiocytes
#9
Xiao Zhang, Cai Zong, Lingyi Zhang, Edwin Garner, Shigeyuki Sugie, Chinyen Huang, Wenting Wu, Jie Chang, Toshihiro Sakurai, Masashi Kato, Sahoko Ichihara, Shinji Kumagai, Gaku Ichihara
1, 2-Dichloropropane (1, 2-DCP) has been used as a paint remover in the industry. The International Agency for Research on Cancer reclassified this compound recently to Group 1 (carcinogenic to humans) based on epidemiological studies of cholangiocarcinoma among offset-color proof-printing workers exposed to 1, 2-DCP in Japan. Two-year rodent carcinogenicity bioassays demonstrated that 1, 2-DCP induced tumors in liver and lung, but not in bile duct. The present study was designed to assess the toxic effects of 1, 2-DCP on proliferation and apoptosis in mice bile duct and the role of cytochrome P450 (CYP450) in any such effect...
December 7, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29228301/targeted-inhibition-of-janus-kinases-abates-interfon-gamma-induced-invasive-behaviour-of-fibroblast-like-synoviocytes
#10
Thomas Karonitsch, Denise Beckmann, Karolina Dalwigk, Birgit Niederreiter, Paul Studenic, Ruth A Byrne, Johannes Holinka, Florian Sevelda, Adelheid Korb-Pap, Günter Steiner, Josef S Smolen, Thomas Pap, Hans P Kiener
Objectives: The aim was to explore the function of the T-cell cytokine IFNγ for mesenchymal tissue remodelling in RA and to determine whether IFNγ signalling controls the invasive potential of fibroblast-like synoviocytes (FLS). Methods: To assess architectural responses, FLS were cultured in three-dimensional micromasses. FLS motility was analysed in migration and invasion assays. Signalling events relevant to cellular motility were defined by western blots. Baricitinib and small interfering RNA pools were used to suppress Janus kinase (JAK) functions...
December 7, 2017: Rheumatology
https://www.readbyqxmd.com/read/29228283/interaction-of-neisseria-meningitidis-group-x-n-acetylglucosamine-1-phosphotransferase-with-its-donor-substrate
#11
Shonoi A Ming, Ebony Cottman-Thomas, Natalee C Black, Yi Chen, Vamsee Veeramachineni, Dwight C Peterson, Xi Chen, Lauren M Tedaldi, Gerd K Wagner, Chao Cai, Robert J Linhardt, Willie F Vann
Neisseria meningitidis Group X is an emerging cause of bacterial meningitis in the Sub-Saharan Africa. The capsular polysaccharide of Group X is a homopolymer of N-acetylglucosamine α(1-4) phosphate and is a vaccine target for prevention of disease associated with this meningococcal serogroup. We have demonstrated previously that the formation of the polymer is catalyzed by a phosphotransferase which transfers N- acetylglucosamine-1-phosphate from UDP-N-acetylglucosamine to the 4- hydroxyl of the N-acetylglucosamine on the non-reducing end of the growing chain...
December 8, 2017: Glycobiology
https://www.readbyqxmd.com/read/29228274/screening-the-toxcast-phase-1-chemical-library-for-inhibition-of-deiodinase-type-1-activity
#12
Michael W Hornung, Joseph J Korte, Jennifer H Olker, Jeffrey S Denny, Carsten Knutsen, Phillip C Hartig, Mary C Cardon, Sigmund J Degitz
Thyroid hormone (TH) homeostasis is dependent upon coordination of multiple key events including iodide uptake, hormone synthesis, metabolism and elimination, to maintain proper TH signaling. Deiodinase enzymes catalyze iodide release from THs to interconvert THs between active and inactive forms, and are integral to hormone metabolism. The activity of deiodinases has been identified as an important endpoint to include in the context of screening chemicals for thyroid hormone disruption. To begin to address the potential for chemicals to inhibit these enzymes an adenovirus expression system was used to produce human deiodinase type 1 (DIO1) enzyme, established robust assay parameters for non-radioactive determination of iodide release by the Sandell-Kolthoff method, and employed a 96-well plate format for screening chemical libraries...
December 7, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29228247/a-randomized-double-blind-placebo-and-active-comparator-controlled-phase-i-study-of-analgesic-antihyperalgesic-properties-of-asp8477-a-fatty-acid-amide-hydrolase-inhibitor-in-healthy-female-subjects
#13
Klaus Schaffler, Ashraf Yassen, Peter Reeh, Paul Passier
Objectives: To evaluate the analgesic/antihyperalgesic effect of ASP8477. Design: Randomized, double-blind, double-dummy, cross-over, placebo- and active comparator-controlled study. Setting: HPR Dr. Schaffler GmbH, Munich, Germany. Subjects: Healthy female subjects aged 18-65 years. Methods: Eligible subjects were randomly assigned to one of six treatment sequences and received multiple ascending doses of ASP8477, duloxetine, and placebo over three treatment periods (each consisting of 21-day dosing separated by 14-day washout periods)...
December 8, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/29228202/activity-of-ceftazidime-avibactam-against-problem-enterobacteriaceae-and-pseudomonas-aeruginosa-in-the-uk-2015-16
#14
David M Livermore, Danièle Meunier, Katie L Hopkins, Michel Doumith, Robert Hill, Rachel Pike, Peter Staves, Neil Woodford
Background: Ceftazidime/avibactam combines an established oxyimino-cephalosporin with the first diazabicyclooctane β-lactamase inhibitor to enter clinical use. We reviewed its activity against Gram-negative isolates, predominantly from the UK, referred for resistance investigation in the first year of routine testing, beginning in July 2015. Methods: Isolates were as received from referring laboratories; there is a bias to submit those with suspected carbapenem resistance...
December 8, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29228168/glutamate-residues-at-positions-162nd-and-164th-influence-the-beta-lactamase-activity-of-shv-14-obtained-from-klebsiella-pneumoniae
#15
Gaurav Kumar, Sarmistha Biswal, Soshina Nathan, Anindya S Ghosh
Extensive production of SHV-14 beta-lactamase makes Klebsiella pneumoniae resistant to beta-lactams. The presence of omega-loop has been reported to influence the beta-lactamase activity, which is also present in SHV-14. Its omega-loop has three glutamates in nearly alternating positions, 162, 164 and 167 but their concise role on the behaviour of SHV-14 is unknown. To uncover the influence of each glutamate on SHV-14, we replaced glutamates with alanine and estimated the effect of each mutation by assessing the change in beta-lactam sensitivities in the surrogate Escherichia coli cells and catalytic efficiencies for hydrolysis with the purified proteins...
December 6, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29228157/gut-epithelial-vitamin-d-receptor-regulates-microbiota-dependent-mucosal-inflammation-by-suppressing-intestinal-epithelial-cell-apoptosis
#16
Lei He, Tianjing Liu, Yongyan Shi, Feng Tian, Huiyuan Hu, Dilip K Deb, Yinyin Chen, Marc Bissonnette, Yan Chun Li
Recent studies show that colonic vitamin D receptor (VDR) signaling protects the mucosal epithelial barrier and suppresses colonic inflammation, but the underlying molecular mechanism remains to be fully understood. To investigate the implication of colonic VDR down-regulation seen in patients with inflammatory bowel disease, we assessed the effect of gut epithelial VDR deletion on colonic inflammatory responses in an experimental colitis model. In 2,4,6-trinitrobenzenesulfonic acid (TNBS)-induced colitis model, mice carrying VDR deletion in gut epithelial cells (VDRf/f;Villin-Cre or VDRΔIEC) or in colonic epithelial cells (VDRf/f;CDX2-Cre or VDRΔCEC) developed more severe clinical colitis than VDRf/f control mice, characterized by more robust TH1 and TH17 responses, with greater increases in mucosal IFN-γ+, IL-17+ and IFN-γ+IL-17+ T cells...
December 7, 2017: Endocrinology
https://www.readbyqxmd.com/read/29228125/myeloid-neoplasms-following-solid-organ-transplantation-clinicopathologic-studies-of-23-cases
#17
Bin Wu, Kimberly Ingersoll, Rachel Jug, Lian-He Yang, Catherine Luedke, Amanda Lo, Pu Su, Xin Liu, Catherine Rehder, Jerald Gong, Chuanyi Mark Lu, Endi Wang
Objectives: Myeloid neoplasms (MNs) after solid organ transplant are rare, and their clinicopathologic features have not been well characterized. Methods: We retrospectively analyzed 23 such cases. Results: The ages ranged from 2 to 76 years, with a median of 59 years at the diagnosis. The median interval between the transplant and diagnosis was 56 months (range, 8-384 months). The transplanted organs included liver in five, kidney in six, lung in five, heart in six, and heart/lung in one case(s)...
December 7, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/29228114/effects-of-exportin-1-on-nuclear-transport-and-meiotic-resumption-in-porcine-full-grown-and-growing-oocytes
#18
Asuka Onuma, Yoshie A Fujioka, Wataru Fujii, Koji Sugiura, Kunihiko Naito
Exportin 1 (XPO1) is a nuclear transport receptor involved in the nuclear export of majority proteins in somatic cells. In mammalian oocytes, however, only the presence of XPO1 has been reported at mRNA and protein levels, and the definitive functions of XPO1 and its effects on the meiotic maturation of oocytes have never been directly examined. In the present study, the expression state and the nuclear-export function of porcine XPO1 were analyzed in porcine oocytes. In addition, we investigated the effects of the overexpression and inhibition of XPO1 on meiotic regulation in full-grown and growing oocytes by mRNA injection and inhibitor treatment...
December 8, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29228113/fibroblast-growth-factor-2-and-transforming-growth-factor-beta1-oppositely-regulate-mir-221-that-targets-thrombospondin-1-in-bovine-luteal-endothelial-cells
#19
Svetlana Farberov, Rina Meidan
Thrombospondin-1 (THBS1) is an important mediator of corpus luteum (CL) regression. Highly induced during luteolysis, it acts as a natural anti-angiogenic, proapoptotic compound. THBS1 expression is regulated in bovine luteal endothelial cells (LECs) by fibroblast growth factor-2 (FGF2) and transforming growth factor-beta1 (TGFB1) acting in an opposite manner. In this study we sought to identify specific microRNAs (miRNAs) targeting THBS1 and investigate their possible involvement in FGF2 and TGFB1-mediated THBS1 expression...
December 6, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29227993/in-vivo-zebrafish-morphogenesis-shows-cyp26b1-promotes-tendon-condensation-and-musculoskeletal-patterning-in-the-embryonic-jaw
#20
Patrick D McGurk, Mary E Swartz, Jessica W Chen, Jenna L Galloway, Johann K Eberhart
Integrated development of diverse tissues gives rise to a functional, mobile vertebrate musculoskeletal system. However, the genetics and cellular interactions that drive the integration of muscle, tendon, and skeleton are poorly understood. In the vertebrate head, neural crest cells, from which cranial tendons derive, pattern developing muscles just as tendons have been shown to in limb and trunk tissue, yet the mechanisms of this patterning are unknown. From a forward genetic screen, we determined that cyp26b1 is critical for musculoskeletal integration in the ventral pharyngeal arches, particularly in the mandibulohyoid junction where first and second arch muscles interconnect...
December 11, 2017: PLoS Genetics
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