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https://www.readbyqxmd.com/read/28432271/knockdown-of-prdx2-sensitizes-colon-cancer-cells-to-5-fu-by-suppressing-the-pi3k-akt-signaling-pathway
#1
Jun Xu, Shouru Zhang, Rong Wang, Xingye Wu, Li Zeng, Zhongxue Fu
Although, 5-Fluorouracil (5-FU) remains widely used in adjuvant therapy in patients with colon cancer, resistance to 5-FU-based chemotherapy is an important reason for treatment failure. Recent studies have reported that an enhanced reactive oxygen species (ROS) scavenging system shows drug resistance to 5-FU. Peroxiredoxin-2 (PRDX2), is an important member of the ROS scavenging system, and may be a potential target that promotes chemosensitivity to 5-FU in colon cancer. Here, we depleted PRDX2 by PRDX2-shRNA-LV transduction in two colon cancer cell lines and found that in vitro PRDX2 knockdown facilitates cell death and apoptosis in 5-FU-treated colon cancer cells...
April 21, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28432060/toll-like-receptor-2-tlr2-dominance-over-tlr4-in-stressful-conditions-for-its-detrimental-role-in-the-heart
#2
Ashim K Bagchi, Gauri Akolkar, Soma Mandal, Prathapan Ayyappan, Xi Yang, Pawan K Singal
It has been suggested that toll-like receptor 4 (TLR4) promotes interleukin-10 (IL-10)-mediated cardiac cell survival while another receptor, TLR2, from the same family is detrimental. Here we examined the interactive role of these two innate signaling molecules under stressful conditions including interleukin-10 knockout (IL-10(-/-)) mice, global ischemia/reperfusion (I/R) injury in rat hearts and in-vitro shRNA experimental models in presence or absence of IL-10 (10ng/ml). Circulating and myocardial levels of tumor necrosis factor-α (TNF-α) as well as apoptosis and fibrosis were higher in IL-10(-/-) mice...
April 21, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28431381/zeaxanthin-ameliorates-high-glucose-induced-mesangial-cell-apoptosis-through-inhibiting-oxidative-stress-via-activating-akt-signalling-pathway
#3
Changjiang Ying, Lei Chen, Shanshan Wang, Yizhen Mao, Hongwei Ling, Wei Li, Xiaoyan Zhou
Oxidative stress is a critical factor in the pathophysiology of diabetic kidney disease. Previous study shows that hyperglycaemia aggravates renal injury through oxidative stress in diabetic model, and antioxidants have beneficial effect on diabetic kidney disease. However, the role of antioxidants in the progression of diabetic kidney disease is poorly understood. The aim of this study was to clarify whether zeaxanthin, an antioxidant, could ameliorate mesangial cell injury and if so, identify the related mechanism underlying this protective effect...
April 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28431341/eco-friendly-synthesis-of-novel-cyanopyridine-derivatives-and-their-anticancer-and-pim-1-kinase-inhibitory-activities
#4
Khaled A M Abouzid, Ghada H Al-Ansary, Abeer M El-Naggar
Targeting Pim-1 kinase recently proved to be profitable for conquering cancer proliferation. In the current study, we report the design, synthesis and biological evaluation of two novel series of 2-amino cyanopyridine series (5a-g) and 2-oxocyanopyridine series (6a-g) targeting Pim-1 kinase. All of the newly synthesized compounds were evaluated for their in vitro anticancer activity against a panel of three cell lines, namely, the liver cancer cell line (HepG2), the colon cancer cell line (HCT-116) and the breast cancer cell line (MCF-7)...
April 14, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28430968/sex-chromosome-dependent-differential-viability-of-human-spermatozoa-during-prolonged-incubation
#5
Young-Ah You, Woo-Sung Kwon, Md Saidur Rahman, Yoo-Jin Park, Young-Ju Kim, Myung-Geol Pang
STUDY QUESTION: Are there significant differences in the ability of X chromosome-bearing (X) spermatozoa and Y chromosome-bearing (Y) spermatozoa to survive incubation under stressful conditions? SUMMARY ANSWER: Y spermatozoa are more vulnerable to stress than their X counterparts depending on culture period and temperature, and show higher expression of apoptotic proteins. WHAT IS KNOWN ALREADY: The primary sex ratio is determined by there being an equal number of spermatozoa carrying X and Y chromosomes...
April 19, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28430874/developmental-sall2-transcription-factor-a-new-player-in-cancer
#6
Viviana E Hermosilla, Matias I Hepp, David Escobar, Carlos Farlas, Elizabeth N Riffo, Ariel F Castro, Roxana Pincheira
SALL2, also known as Spalt-like transcription factor 2, is a member of the SALL family of transcription factors involved in development and conserved through evolution. Since its identification in 1996, findings indicate that SALL2 plays a role in neurogenesis, neuronal differentiation and eye development. Consistently, SALL2 deficiency associates with neural tube defects and coloboma, a congenital eye disease. Relevant to cancer, clinical studies indicate that SALL2 is deregulated in various cancers, and is a specific biomarker for Synovial Sarcoma...
April 18, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28430162/ameliorative-effects-and-possible-molecular-mechanism-of-action-of-black-ginseng-panax-ginseng-on-acetaminophen-mediated-liver-injury
#7
Jun-Nan Hu, Zhi Liu, Zi Wang, Xin-Dian Li, Lian-Xue Zhang, Wei Li, Ying-Ping Wang
Background: Frequent overdosing of acetaminophen (APAP) has become the major cause of acute liver injury (ALI). The present study aimed to evaluate the potential hepatoprotective effects of black ginseng (BG) on APAP-induced mice liver injuries and the underlying mechanisms of action were further investigated for the first time. Methods: Mice were treated with BG (300, 600 mg/kg) by oral gavage once a day for seven days. On the 7th day, all mice were treated with 250 mg/kg APAP which caused severe liver injury after 24 h and hepatotoxicity was assessed...
April 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28429935/saponins-ginsenosides-from-the-leaves-of-panax-quinquefolius-ameliorated-acetaminophen-induced-hepatotoxicity-in-mice
#8
Xingyue Xu, Junnan Hu, Zhi Liu, Rui Zhang, Yufang He, Wei Hou, Zhiqing Wang, Ge Yang, Wei Li
Acetaminophen (APAP) overdose is the most frequent inducement of drug-induced acute liver injury (ALI). The purpose of this study was to investigate the protective effect of saponins (ginsenosides) from the leaves of Panax quinquefolius (PQS) against APAP-induced hepatotoxicity and the involved mechanism were investigated. Mice were pretreated with PQS (150 and 300 mg/kg) by oral gavage for seven days before being treated with 250 mg/kg APAP. Sever liver injury was exerted at 24 h post-APAP and hepatotoxicity was assessed...
April 21, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28429857/ndufa4l2-protects-against-ischemia-reperfusion-induced-cardiomyocyte-apoptosis-and-mitochondrial-dysfunction-by-inhibiting-complex-i
#9
Jianhua Li, Caiyan Bai, Junxia Guo, Wanqian Liang, Jingning Long
Myocardial ischemia/reperfusion (I/R) injury may cause the apoptosis of cardiomyocytes as well as mitochondrial dysfunction. The aims of the present study were to investigate whether NADH dehydrogenase 1 alpha subcomplex subunit 4-like 2 (NDUFA4L2) on myocardial ischemia-reperfusion (I/R) injury and the underlying molecular mechanism. The hypoxia-reperfusion (H/R) model was established in vitro using H9c2 cells to simulate I/R injury. NDUFA4L2 and complex I expression levels were detected using RT-PCR and western blot...
April 21, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28429785/natriuretic-peptide-receptor-guanylyl-cyclase-a-pathway-counteracts-glomerular-injury-evoked-by-aldosterone-through-p38-mitogen-activated-protein-kinase-inhibition
#10
Yukiko Kato, Kiyoshi Mori, Masato Kasahara, Keisuke Osaki, Akira Ishii, Keita P Mori, Naohiro Toda, Shoko Ohno, Takashige Kuwabara, Takeshi Tokudome, Ichiro Kishimoto, Moin A Saleem, Taiji Matsusaka, Kazuwa Nakao, Masashi Mukoyama, Motoko Yanagita, Hideki Yokoi
Guanylyl cyclase-A (GC-A) signaling, a natriuretic peptide receptor, exerts renoprotective effects by stimulating natriuresis and reducing blood pressure. Previously we demonstrated massive albuminuria with hypertension in uninephrectomized, aldosterone-infused, and high salt-fed (ALDO) systemic GC-A KO mice with enhanced phosphorylation of p38 mitogen-activated protein kinase (MAPK) in podocytes. In the present study, we examined the interaction between p38 MAPK and GC-A signaling. The administration of FR167653, p38 MAPK inhibitor, reduced systolic blood pressure (SBP), urinary albumin excretion, segmental sclerosis, podocyte injury, and apoptosis...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28429540/silencing-of-astrocyte-elevated-gene-1-inhibits-proliferation-and-migration-and-induces-apoptosis-in-melanoma
#11
Yue Zhang, Ge Peng, Ying Wang, Lixia Cui, Wenqing Wu, Luan Wang, Chengyu Liu, Xiuping Han
Melanoma is an aggressive skin malignancy with a high mortality. Astrocyte elevated gene-1 (AEG-1), a downstream target of ras and c-myc, has been implicated in the development of multiple tumors, yet its role in melanoma remains unclear. In the present study, the role of AEG-1 in melanoma was explored through AEG-1 silencing. Our results showed that silencing of AEG-1 inhibited proliferation of melanoma cells and induced cell cycle arrest, accompanied by reduced levels of cyclinA, cyclinB, cyclinD1, cyclinE and cyclin dependent kinase 2...
April 21, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28429287/protective-effect-of-selenoprotein-x-against-oxidative-stress-induced-cell-apoptosis-in-human-hepatocyte-lo2-cells-via-the-p38-pathway
#12
Jia-Yong Tang, Ai-Hua He, Gang Jia, Guang-Mang Liu, Xiao-Ling Chen, Jing-Yi Cai, Hai-Ying Shang, Jin-Qiu Liao, Hua Zhao
Oxidative stress, as mediated by ROS (reactive oxygen species), is a significant factor in initiating the cells damaged by affecting cellular macromolecules and impairing their biological functions; SelX, a selenoprotein also known as MsrB1 belonging to the methionine sulfoxide reductase (Msr) family, is the redox repairing enzyme and involved in redox-related functions. In order to more precisely analyze the relationship between oxidative stress, cell oxidative damage, and SelX, we stably overexpressed porcine Selx full-length cDNA in human normal hepatocyte (LO2) cells...
April 20, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28429284/foxo1-attenuates-naf-induced-apoptosis-of-ls8-cells-through-the-jnk-and-mitochondrial-pathways
#13
Juedan Li, Lin Zhao, Xiaomeng Zhao, Peng Wang, Yan Liu, Jianping Ruan
Fluoride-induced ameloblast apoptosis is a key event in dental fluorosis development. Forkhead box o1 (Foxo1) is a transcription factor involved in cell apoptosis. The present study aims to investigate the effect of Foxo1 on ameloblast apoptosis induced by fluoride in vitro and to explore its possible mechanism. Ameloblast-like cells (LS8 cells) were exposed to various concentrations of NaF for up to 48 h. Foxo1 activation was modulated using lentiviral vectors, and cell apoptosis was measured by flow cytometry...
April 20, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28428827/fundamental-research-on-the-action-mechanism-of-the-800-nm-semiconductor-laser-on-skin-blackheads-and-coarse-pores
#14
Jie Lin, Li Jing, Hao Zhu, Fu-Sheng Dong
The aim of the study was to determine the mechanism of action of the 800 nm semiconductor laser on skin blackheads and coarse pores. A total of 24 healthy purebred short-haired male guinea pigs, weighing 350-400 g, were selected and smeared with 0.5 ml coal tar suspension evenly by injector once daily. Treatment was continued for 14 days to form an experimental area of 8×3 cm on the back of the guinea pigs. The animals were divided into the following groups: Normal control group (NC), low-dose laser treatment group (L-LS), high-dose laser treatment group (H-LS), and Q-switched Nd:YAG treatment group (QC)...
January 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28428688/modulation-of-angiogenesis-proliferative-response-and-apoptosis-by-%C3%AE-sitosterol-in-rat-model-of-renal-carcinogenesis
#15
Ramalingam Sharmila, Ganapathy Sindhu
As expanded understanding of molecular tumor characteristics, which drive renal cancer growth and progression gives a promising future for renal carcinoma therapy. The objective of the present study was designed to examine the effect of β-sitosterol on a rat model of experimental renal carcinogenesis. Renal carcinogenesis was induced in rats treated with N-diethylnitrosamine (DEN; 200 mg/kg bw single i.p., injection) and ferric nitrilotriacetate (Fe-NTA; 9 mg Fe/kg bw i.p., twice a week for 16 weeks). β-sitosterol pretreatment (20 mg/kg bw in 0...
June 2017: Indian Journal of Clinical Biochemistry: IJCB
https://www.readbyqxmd.com/read/28428059/the-decreased-growth-performance-and-impaired-immune-function-and-structural-integrity-by-dietary-iron-deficiency-or-excess-are-associated-with-tor-nf-%C3%AE%C2%BAb-p38mapk-nrf2-and-mlck-signaling-in-head-kidney-spleen-and-skin-of-grass-carp-ctenopharyngodon-idella
#16
Yan-Lin Guo, Wei-Dan Jiang, Pei Wu, Yang Liu, Xiao-Qiu Zhou, Sheng-Yao Kuang, Ling Tang, Wu-Neng Tang, Yong-An Zhang, Lin Feng
This study was conducted to investigate the effects of dietary iron on the growth, and immune function and structural integrity in head kidney, spleen and skin as well as the underlying signaling of young grass carp (Ctenopharyngodon idella). Total 630 grass carp (242.32 ± 0.58 g) were fed diets containing graded levels of iron at 12.15 (basal diet), 35.38, 63.47, 86.43, 111.09, 136.37 mg/kg (diets 2-6 were added with ferrous fumarate) and 73.50 mg/kg (diet 7 was added with ferrous sulfate) diet for 60 days...
April 17, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28427129/-the-role-of-foxo3a-bim-signaling-in-triptolide-induced-bladder-cancer-t24-cells-apoptosis
#17
L L Yang, X Y Wang, L Y Zheng, S J Fang, M Xu, Z W Zhao, J S Ji
Objective: To investigate the role of FOXO3a-Bim signaling in triptolide induced bladder cancer T24 cells apoptosis. Methods: T24 cells were used and divided into control group, triptolide group(50 nmol/L), MK2206 group(50 nmol/L triptolide+ 5 μmol/L MK2206), FOXO3a-siRNA group(50 nmol/L triptolide+ 100 nmol/L FOXO3a-siRNA), Bim-siRNA group (50 nmol/L triptolide+ 100 nmol/L Bim-siRNA). MTT assay was used to analyze the cells growth inhibition.Annexin V/PI staining was implemented to detect cell apoptosis rate, the expression of p-Akt, Akt, p-FOXO3a, FOXO3a, Bim, Bax...
April 18, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28427017/aromatase-inhibitors-and-apoptotic-inducers-design-synthesis-anticancer-activity-and-molecular-modeling-studies-of-novel-phenothiazine-derivatives-carrying-sulfonamide-moiety-as-hybrid-molecules
#18
Mostafa M Ghorab, Mansour S Alsaid, Nermin Samir, Ghada A Abdel-Latif, Aiten M Soliman, Fatma A Ragab, Dalal A Abou El Ella
Hybrid molecules are used as anticancer agents to improve effectiveness and diminish drug resistance. So, the current study aimed to introduce twenty novel phenothiazine sulfonamide hybrids 5-22, 24 and 25 of promising anticancer activity. Compounds 11 and 13 revealed more potent anticancer properties (IC50 8.1 and 8.8 μM) than that of the reference drug (doxorubicin, IC50 = 9.8 μM) against human breast cancer cell line (T47D). To determine the mechanism of their anticancer activity, compounds 5, 6, 7, 11, 13, 14, 16, 17, 19 and 22 that showed promising activity on T47D, were evaluated for their aromatase inhibitory effect...
April 15, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28426885/prognostic-implications-of-left-ventricular-global-longitudinal-strain-in-heart-failure-patients-with-narrow-qrs-complex-treated-with-cardiac-resynchronization-therapy-a-subanalysis-of-the-randomized-echocrt-trial
#19
Jeroen J Bax, Victoria Delgado, Peter Sogaard, Jagmeet P Singh, William T Abraham, Jeffrey S Borer, Kenneth Dickstein, Daniel Gras, Josep Brugada, Michele Robertson, Ian Ford, Henry Krum, Johannes Holzmeister, Frank Ruschitzka, John Gorcsan
Aim: Left ventricular (LV) global longitudinal strain (GLS) reflects LV systolic function and correlates inversely with the extent of LV myocardial scar and fibrosis. The present subanalysis of the Echocardiography Guided CRT trial investigated the prognostic value of LV GLS in patients with narrow QRS complex. Methods and results: Left ventricular (LV) global longitudinal strain (GLS) was measured on the apical 2-, 4- and 3-chamber views using speckle tracking analysis...
March 7, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28425934/evaluation-of-the-effects-of-airborne-particulate-matter-on-bone-marrow-mesenchymal-stem-cells-bm-mscs-cellular-molecular-and-systems-biological-approaches
#20
Muhammad Abu-Elmagd, Mansour A Alghamdi, Magdy Shamy, Mamdouh I Khoder, Max Costa, Mourad Assidi, Roaa Kadam, Haneen Alsehli, Mamdooh Gari, Peter Natesan Pushparaj, Gauthaman Kalamegam, Mohammed H Al-Qahtani
Particulate matter (PM) contains heavy metals that affect various cellular functions and gene expression associated with a range of acute and chronic diseases in humans. However, the specific effects they exert on the stem cells remain unclear. Here, we report the effects of PM collected from the city of Jeddah on proliferation, cell death, related gene expression and systems of biological analysis in bone marrow mesenchymal stem cells (BM-MSCs), with the aim of understanding the underlying mechanisms. PM2...
April 20, 2017: International Journal of Environmental Research and Public Health
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