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https://www.readbyqxmd.com/read/29792899/protective-effect-of-exendin-4-treatment-on-erectile-dysfunction-induced-by-chronic-methylglyoxal-administration-in-rats
#1
Selvinaz Dalaklioglu, Arda Tasatargil, Nilay Kuscu, Soner Celik, Ciler Celik-Ozenci, Sebahat Ozdem, Ayse Barutcigil, Ikbal Kucukcetin
OBJECTIVE: The aim of this study was to investigate the effect of chronic exendin-4 (Ex-4) treatment on corpus cavernosum (CC) dysfunction in methylglyoxal (MGO) administered rats. METHODS: Male rats were divided into four groups as control, MGO (75 mg/kg/day in drinking water for 12 weeks), MGO + low-dose Ex-4 (0.1 μg/kg twice daily subcutaneously for 12 weeks concomitant with MGO), and MGO + high-dose Ex-4 (1 μg/kg twice daily subcutaneously for 12 weeks concomitant with MGO)...
May 21, 2018: Peptides
https://www.readbyqxmd.com/read/29790629/long-non-coding-rna-neat1-promoted-ovarian-cancer-cells-metastasis-via-regulating-of-mir-382-3p-rock1-axial
#2
Yangcheng Liu, Yong Wang, Xinming Fu, Zhi Lu
Long non-coding RNAs (lncRNAs) are extensively involved in various malignant tumors including ovarian cancer (OC). In the present study, we focused on the expression and function of nuclear enriched abundant transcript 1 (NEAT1) work on ovarian cancer cells' metastasis. We demonstrated that NEAT1 was up-regulated in OC tissue specimens and cell lines. Also, we revealed that depression of NEAT1 inhibited OC cells' metastasis and the expression of Rho associated coiled-coil containing protein kinase 1 (ROCK1) which was a metastasis-related gene...
May 23, 2018: Cancer Science
https://www.readbyqxmd.com/read/29790111/potential-of-the-dual-mtor-kinase-inhibitor-azd2014-to-overcome-paclitaxel-resistance-in-anaplastic-thyroid-carcinoma
#3
Zorica Milošević, Jasna Banković, Jelena Dinić, Chrisiida Tsimplouli, Evangelia Sereti, Miodrag Dragoj, Verica Paunović, Zorka Milovanović, Marija Stepanović, Nikola Tanić, Kostantinos Dimas, Milica Pešić
PURPOSE: Anaplastic thyroid carcinoma (ATC) is an aggressive, chemo-resistant malignancy. Chemo-resistance is often associated with changes in activity of the RAS/MAPK/ERK and PI3K/AKT/mTOR pathways and/or a high expression of ATP binding cassette (ABC) transporters, such as P-glycoprotein (P-gp) and breast cancer resistance protein (BCRP). To assess the therapeutic efficacy in ATC of a combination of the dual mTOR kinase inhibitor vistusertib (AZD2014) and paclitaxel (PTX), we generated a new cell line (Rho-) via the selection of human thyroid carcinoma 8505C cells that exhibit a low accumulation of rhodamine 123, which serves as a P-gp and BCRP substrate...
May 22, 2018: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/29787735/prp4-kinase-induces-actin-rearrangement-and-epithelial-mesenchymal-transition-through-modulation-of-the-actin-binding-protein-cofilin
#4
Salman Ul Islam, Muhammad Bilal Ahmed, Su Jin Lee, Adeeb Shehzad, Jong Kyung Sonn, Oh-Shin Kwon, Young Sup Lee
Cell actin cytoskeleton is primarily modulated by Rho family proteins. RhoA regulates several downstream targets, including Rho-associated protein kinase (ROCK), LIM-Kinase (LIMK), and cofilin. Pre-mRNA processing factor 4B (PRP4) modulates the actin cytoskeleton of cancer cells via RhoA activity inhibition. In this study, we discovered that PRP4 over-expression in HCT116 colon cancer cells induces cofilin dephosphorylation by inhibiting the Rho-ROCK-LIMK-cofilin pathway. Two-dimensional gel electrophoresis, and matrix-assisted laser desorption/ionization time-of-flight mass-spectrometry (MALDI-TOF MS) analysis indicated increased expression of protein phosphatase 1A (PP1A) in PRP4-transfected HCT116 cells...
May 19, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29786956/rho-kinase-and-protein-kinase-c-pathways-are-responsible-for-enhanced-carbachol-contraction-in-permeabilized-detrusor-in-a-rat-model-of-cystitis
#5
Merve Denizalti, N Tugba Durlu-Kandilci, G Simsek, T Emrah Bozkurt, Inci Sahin-Erdemli
Interstitial cystitis is a syndrome characterized by detrusor overactivity and chronic inflammation of the bladder. The mechanisms responsible for the altered smooth muscle contractility remain poorly understood. The aim of the study was to investigate the role of intracellular signalling pathways in carbachol-induced detrusor contraction in a rat model of interstitial cystitis. Cyclophosphamide (150 mg/kg, dissolved in saline) was injected to rats (Sprague-Dawley, female, 200-250 g) intraperitoneally once a day on days 1, 4 and 7 to induce interstitial cystitis...
May 22, 2018: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29786744/mir%C3%A2-133b-regulates-proliferation-and-apoptosis-in-high%C3%A2-glucose%C3%A2-induced-human-retinal-endothelial-cells-by-targeting-ras-homolog-family-member-a
#6
Jun Yao, Jihong Wang, Yong Yao, Kelei Wang, Qianqian Zhou, Ying Tang
The aim of the present study was to investigate the role of microRNA (miR)‑133b in high‑glucose‑induced human retinal endothelial cells (hRECs), particularly regarding its potential targeting of ras homolog family member A (RhoA). To establish the high‑glucose‑induced diabetic retinopathy (DR) model, hRECs were cultured in high‑glucose medium for 1, 2 and 3 days. An Annexin allophycocyanin (APC)/7‑aminoactinomycin D (7‑AAD) staining assay was performed to measure the apoptosis of hRECs. Next, the cells were transfected with miR‑133b inhibitors or mimics, and the cell proliferation and apoptosis were measured by MTT and Annexin‑APC/7‑AAD staining assays, respectively...
May 18, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29785630/calcium-channels-rho-kinase-protein-kinase-c-and-phospholipase-c-pathways-mediate-mercury-chloride-induced-myometrial-contractions-in-rats
#7
Swati Koli, Atul Prakash, Soumen Choudhury, Rajesh Mandil, Satish K Garg
Adverse effects of mercury on female reproduction are reported; however, its effect on myogenic activity of uterus and mechanism thereof is obscure. Present study was undertaken to unravel the mechanistic pathways of mercuric chloride (HgCl2 )-induced myometrial contraction in rats. Isometric tension in myometrial strips of rats following in vitro exposure to HgCl2 was recorded using data acquisition system-based physiograph. HgCl2 produced concentration-dependent (10 nM-100 μM) uterotonic effect which was significantly (p < 0...
May 21, 2018: Biological Trace Element Research
https://www.readbyqxmd.com/read/29785232/effects-of-fasudil-on-patients-with-pulmonary-hypertension-associated-with-left-ventricular-heart-failure-with-preserved-ejection-fraction-a-prospective-intervention-study
#8
Xiang Zhang, Xueming Zhang, Saihua Wang, Jun Luo, Zhihong Zhao, Changzhu Zheng, Jieyan Shen
Background: Pulmonary hypertension due to left ventricular heart failure with preserved ejection fraction (PH-HFpEF) is an increasingly medical problem. The aim of the study was to evaluate the clinical efficacy of fasudil on PH-HFpEF elderly patients and to figure out the subtype of PH-HFpEF which may be the therapeutic object of fasudil. Method: 58 PH-HFpEF elderly patients were enrolled. Patients were diagnosed with passive pulmonary hypertension (PPH) or reactive pulmonary hypertension (RPH) by right heart catheterization and all receiving Rho kinase inhibitor fasudil for 2 weeks...
2018: Canadian Respiratory Journal: Journal of the Canadian Thoracic Society
https://www.readbyqxmd.com/read/29784011/extremely-low-frequency-electromagnetic-fields-promote-mesenchymal-stem-cell-migration-by-increasing-intracellular-ca-2-and-activating-the-fak-rho-gtpases-signaling-pathways-in-vitro
#9
Yingchi Zhang, Jiyuan Yan, Haoran Xu, Yong Yang, Wenkai Li, Hua Wu, Chaoxu Liu
BACKGROUND: The ability of mesenchymal stem cells (MSCs) to migrate to the desired tissues or lesions is crucial for stem cell-based regenerative medicine and tissue engineering. Optimal therapeutics for promoting MSC migration are expected to become an effective means for tissue regeneration. Electromagnetic fields (EMF), as a noninvasive therapy, can cause a lot of biological changes in MSCs. However, whether EMF can promote MSC migration has not yet been reported. METHODS: We evaluated the effects of EMF on cell migration in human bone marrow-derived MSCs...
May 21, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29778535/lysophosphatidic-acid-receptor-lpa-6-regulates-endothelial-blood-brain-barrier-function-implication-of-hepatic-encephalopathy
#10
Kayo Masago, Yasuyuki Kihara, Keisuke Yanagida, Fumie Hamano, Shinsuke Nakagawa, Masami Niwa, Takao Shimizu
Cerebral edema is a life-threatening neurological condition characterized by brain swelling due to accumulation of excess fluid both intracellularly and extracellularly. Fulminant hepatic failure (FHF) develops cerebral edema by disrupting blood brain barrier (BBB). However, the mechanisms by which mediator induces brain edema in FHF remain to be elucidated. Here, we assessed a linkage between brain edema and lysophosphatidic acid (LPA) signaling by utilizing an animal model of FHF and in vitro BBB model. Azoxymethane-treated mice developed FHF and hepatic encephalopathy, associated with higher autotaxin (ATX) activities in serum than controls...
May 17, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29777035/septin-dependent-remodeling-of-cortical-microtubule-drives-cell-reshaping-during-epithelial-wound-healing
#11
Asako Shindo, Anastasia Audrey, Maki Takagishi, Masahide Takahashi, John B Wallingford, Makoto Kinoshita
Wounds in embryos heal rapidly through the contraction of the wound edges. Despite well-recognized significance of the actomyosin purse-string for wound closure, roles for other cytoskeletal components are largely unknown. Here, we report that the septin cytoskeleton cooperates with actomyosin and microtubules to coordinate circumferential contraction of the wound margin and concentric elongation of wound-proximal cells in Xenopus laevis embryos. Microtubules reoriented radially, forming bundles along lateral cell cortices in elongating wound-proximal cells...
May 18, 2018: Journal of Cell Science
https://www.readbyqxmd.com/read/29769697/establishment-of-a-nasopharyngeal-carcinoma-cell-line-capable-of-undergoing-lytic-epstein-barr-virus-reactivation
#12
Yim Ling Yip, Weitao Lin, Wen Deng, Lin Jia, Kwok Wai Lo, Pierre Busson, Benjamin Vérillaud, Xuefeng Liu, Chi Man Tsang, Maria Li Lung, Sai Wah Tsao
Epstein-Barr virus (EBV) infects more than 90% of the adult human population. Undifferentiated nasopharyngeal carcinoma (NPC) is common in Southeast Asia, with a particularly high incidence among southern Chinese. The EBV genome can be detected in practically all cancer cells in undifferentiated NPC. The role of EBV in pathogenesis of undifferentiated NPC remains elusive. NPC cell lines are known to be difficult to establish in culture. The EBV+ve NPC cell lines, even if established in culture, rapidly lost their EBV episomes upon prolonged propagation...
May 16, 2018: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/29767957/magnetic-manipulation-of-reversible-nanocaging-controls-in-vivo-adhesion-and-polarization-of-macrophages
#13
Heemin Kang, Hee Joon Jung, Sung Kyu Kim, Dexter Siu Hong Wong, Sien Lin, Gang Li, Vinayak P Dravid, Liming Bian
Macrophages are key immune cells that perform various physiological functions, such as the maintenance of homeostasis, host defense, disease progression, and tissue regeneration. Macrophages adopt distinctly polarized phenotypes, such as pro-inflammatory M1 phenotype or anti-inflammatory (pro-healing) M2 phenotype, to execute disparate functions. The remotely controlled reversible uncaging of bioactive ligands, such as Arg-Gly-Asp (RGD) peptide, is an appealing approach for temporally regulating the adhesion and resultant polarization of macrophages on the implants in vivo...
May 16, 2018: ACS Nano
https://www.readbyqxmd.com/read/29766980/ripasudil-attenuates-lipopolysaccharide-lps-mediated-apoptosis-and-inflammation-in-pulmonary-microvascular-endothelial-cells-via-rock2-enos-signaling
#14
Jianxin Yang, Feng Ruan, Zhongjun Zheng
BACKGROUND Microvascular endothelial inflammation and apoptosis are responsible for septic acute lung injury (ALI). Ripasudil is a novel Rho/Rho kinase (ROCK) inhibitor which shows therapeutic effects on several vascular diseases. The aim of this study was to investigate the protective effects and correlated molecular mechanisms of ripasudil on lipopolysaccharide- induced inflammation and apoptosis of pulmonary microvascular endothelial cells (PMVECs). MATERIAL AND METHODS Cultured PMVECs were exposed to lipopolysaccharide (LPS)...
May 16, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29765452/effects-and-potential-mechanism-of-atorvastatin-treatment-on-lp-pla2-in-rats-with-dyslipidemia
#15
Dongdan Zheng, Anping Cai, Rulin Xu, Zhuocheng Mai, Yingling Zhou, Fanfang Zeng, Liwen Li, Weiyi Mai
Introduction: The effects of statins on lipoprotein-associated phospholipase A2 (Lp-PLA2) are controversial, and the present study aimed to investigate whether atorvastatin could reduce Lp-PLA2 in rats with dyslipidemia. Material and methods: A high-fat and high-cholesterol diet was prescribed to produce a dyslipidemia model. Thereafter, low-dose atorvastatin (5 mg/kg/day), high-dose atorvastatin (20 mg/kg/day) or saline (without-treatment group) was prescribed for 14 days...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29761173/liver-enriched-transcription-factor-expression-relates-to-chronic-hepatic-failure-in-humans
#16
Jorge Guzman-Lepe, Eduardo Cervantes-Alvarez, Alexandra Collin de l'Hortet, Yang Wang, Wendy M Mars, Yoshinao Oda, Yuki Bekki, Masahiro Shimokawa, Huanlin Wang, Tomoharu Yoshizumi, Yoshihiko Maehara, Aaron Bell, Ira J Fox, Kazuki Takeishi, Alejandro Soto-Gutierrez
The mechanisms by which the liver fails in end-stage liver disease remain elusive. Disruption of the transcription factor network in hepatocytes has been suggested to mediate terminal liver failure in animals. However, this hypothesis remains unexplored in human subjects. To study the relevance of transcription factor expression in terminal stages of chronic liver failure in humans, we analyzed the expression of liver-enriched transcription factors (LETFs) hepatocyte nuclear factor (HNF)4α, HNF1α, forkhead box protein A2 (FOXA2), CCAAT/enhancer-binding protein (CEBP)α, and CEBPβ...
May 2018: Hepatology Communications
https://www.readbyqxmd.com/read/29756460/inhaled-fasudil-lacks-pulmonary-selectivity-in-thromboxane-induced-acute-pulmonary-hypertension-in-newborn-lambs
#17
Shawn F L Hanson, Michael H Terry, Dafne T Moretta, Gordon G Power, Sean M Wilson, Farzana Alam, Fakhrul Ahsan, Arlin B Blood, Paresh C Giri
INTRODUCTION: Pulmonary hypertension (PH) is a potentially deadly disease for infants and adults with few existing medical interventions and no cure. In PH, increased blood pressure in the pulmonary artery eventually leads to heart failure. Fasudil, an antagonist of Rho-kinase, causes vasodilation leading to decreased systemic artery pressure and pulmonary artery pressure (PAP). This study compared the effects of fasudil administered as either an intravenous infusion or inhaled aerosol in newborn lambs...
January 1, 2018: Journal of Cardiovascular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/29756391/rho-kinase-and-na-h-exchanger-mediate-endothelin-1-induced-pulmonary-arterial-smooth-muscle-cell-proliferation-and-migration
#18
John C Huetsch, Jasmine Walker, Clark Undem, Julie Lade, Xin Yun, Syeda Baksh, Haiyang Jiang, Ning Lai, Larissa A Shimoda
Excessive production of endothelin-1 (ET-1) has been observed in almost all forms of pulmonary hypertension. ET-1, a highly potent vasoconstrictor, can also potentiate pulmonary arterial smooth muscle cell (PASMC) growth and migration, both of which contribute to the vascular remodeling that occurs during the development of pulmonary hypertension. Increasing evidence indicates that alkalinization of intracellular pH (pHi ), typically due to activation of Na+ /H+ exchange (NHE), is associated with enhanced PASMC proliferation and migration...
May 2018: Physiological Reports
https://www.readbyqxmd.com/read/29754184/discovery-of-a-potent-and-mutant-selective-egfr-inhibitor-that-overcomes-t790m-mediated-resistance-in-lung-cancer
#19
Dong Ha Kim, Yun Jung Choi, Seon Ye Kim, Jung-Eun Lee, Ki Jung Sung, Young Hoon Sung, Woo Sung Kim, Sung-Eun Kim, Hyung Chul Ryu, Jae Sun Kim, Lu Guangying, Chang-Min Choi, Jin Kyung Rho, Jae Cheol Lee
BACKGROUND: Despite remarkable activity in epidermal growth factor receptor (EGFR)-mutant lung cancer patients, the clinical efficacy of EGFR tyrosine kinase inhibitors (TKIs) is limited by the emergence of acquired resistance, which is mostly caused by a secondary T790M mutation. Fortunately, newly developed, mutant-selective EGFR-TKIs against T790M have been proven as an effective therapeutic approach although only osimertinib has received the FDA approval until now. OBJECTIVE: To determine the in vitro and in vivo efficacy of a new EGFR TKI, OBX1-012 in cells with mutant EGFR...
May 12, 2018: Targeted Oncology
https://www.readbyqxmd.com/read/29753317/long-noncoding-rna-dancr-working-as-a-competitive-endogenous-rna-promotes-rock1-mediated-proliferation-and-metastasis-via-decoying-of-mir-335-5p-and-mir-1972-in-osteosarcoma
#20
Yong Wang, Xiandong Zeng, Ningning Wang, Wei Zhao, Xi Zhang, Songling Teng, Yueyan Zhang, Zhi Lu
BACKGROUND: Accumulating evidences indicate that non-coding RNAs (ncRNAs) including long non-coding RNAs (lncRNAs) and microRNAs (miRNAs) acting as crucial regulators in osteosarcoma (OS). Previously, we reported that Rho associated coiled-coil containing protein kinase 1 (ROCK1), a metastatic-related gene was negatively regulated by microRNA-335-5p (miR-335-5p) and work as an oncogene in osteosarcoma. Whether any long non-coding RNAs participate in the upstream of miR-335-5p/ROCK1 axial remains unclear...
May 12, 2018: Molecular Cancer
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