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https://www.readbyqxmd.com/read/28728293/-curcumin-induces-apoptosis-and-protective-autophagy-in-human-gastric-cancer-cells-with-different-degree-of-differentiation
#1
W Li, Y Zhou, J Yang, H H Zhang, S L Zhao, T Zhang, J Huo, P Zheng
Objective: To investigate the effect of curcumin on the apoptosis and autophagy of human gastric cancer cells with different degree of differentiation. Methods: Gastric cancer cell lines BGC-823 and MKN-28 were treated with curcumin at different concentrations. The effect of curcumin on cell proliferation was measured by MTT assay. Apoptosis was assessed by flow cytometry. Autophagy status was analyzed by acridine orange staining. The expression levels of apoptotic and autophagy-related proteins were detected by Western blot...
July 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28728224/-antagonism-of-lovastatin-on-oxidative-stress-and-apoptosis-in-primary-rat-hippocampal-neurons-induced-by-%C3%AE-amyloid-peptide
#2
L C Tan, L Zhao, X H Liu, C M Deng, Z Z Guan
Objective: To investigate the effect of lovastatin on oxidative stress and apoptosis in neurons induced by β-amyloid peptide (Aβ). Methods: Primary culture of rat hippocampal neuron was treated with Aβ oligomers alone or combined with lovastatin. The levels of OH(-), H(2)O(2), O(2)·(-), malondialdehyde, superoxide dismutase (SOD) and glutathione peroxidase (GSH-PX) activities were measured by biochemical methods and protein expression of caspase-3 and bcl-2 was detected by Western blot. Results: As compared with the control group, treatment of 0...
July 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28728132/melatonin-protect-the-development-of-preimplantation-mouse-embryos-from-sodium-fluoride-induced-oxidative-injury
#3
Jiamin Zhao, Beibei Fu, Wei Peng, Tingchao Mao, Haibo Wu, Yong Zhang
Recently study shows that melatonin can protect embryos from the culture environment oxidative stress. However, the protective effect of melatonin on the mouse development of preimplantation embryos under sodium fluoride (NaF) induced oxidative stress is still unclear. Here, we showed that exposure to NaF significantly increased the reactive oxygen species (ROS) level, decreased the blastocyst formation rates, and increased the fragmentation, apoptosis and retardation of blastocysts in the development of mouse preimplantation embryos...
June 29, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28727840/dual-inhibition-of-fes-and-flt3-tyrosine-kinases-potently-inhibits-flt3-itd-aml-cell-growth
#4
Mark C Weir, Sabine Hellwig, Li Tan, Yao Liu, Nathanael S Gray, Thomas E Smithgall
Acute myelogenous leukemia (AML) is often associated with activating mutations in the receptor tyrosine kinase, Flt3, including internal tandem duplications (ITDs) within the regulatory juxtamembrane region. Previous studies have linked Flt3-ITD to the activation of the Fes protein tyrosine kinase in AML, and RNAi-knockdown studies suggest that Fes may be required for Flt3 function. In this study, we tested Fes inhibitors from three different chemical classes for their growth-suppressive activity against Flt3-ITD+ myeloid leukemia cell lines (MV4-11, MOLM-13 and MOLM-14) vs...
2017: PloS One
https://www.readbyqxmd.com/read/28727820/active-hexose-correlated-compound-enhances-extrinsic-pathway-mediated-apoptosis-of-acute-myeloid-leukemic-cells
#5
Kavin Fatehchand, Ramasamy Santhanam, Brenda Shen, Ericka L Erickson, Shalini Gautam, Saranya Elavazhagan, Xiaokui Mo, Tesfaye Belay, Susheela Tridandapani, Jonathan P Butchar
Active Hexose Correlated Compound (AHCC) has been shown to have many immunostimulatory and anti-cancer activities in mice and in humans. As a natural product, AHCC has potential to create safer adjuvant therapies in cancer patients. Acute Myeloid Leukemia (AML) is the least curable and second-most common leukemia in adults. AML is especially terminal to those over 60 years old, where median survival is only 5 to 10 months, due to inability to receive intensive chemotherapy. Hence, the purpose of this study was to investigate the effects of AHCC on AML cells both in vitro and in vivo...
2017: PloS One
https://www.readbyqxmd.com/read/28727797/prophylactic-supplementation-of-resveratrol-is-more-effective-than-its-therapeutic-use-against-doxorubicin-induced-cardiotoxicity
#6
Heba Samy Shoukry, Hania Ibrahim Ammar, Laila Ahmed Rashed, Maha Balegh Zikri, Ashraf Ali Shamaa, Sahar Gamal Abou Elfadl, Ejlal Abu-Al Rub, Sekaran Saravanan, Sanjiv Dhingra
Resveratrol (RSV), a polyphenolic compound and naturally occurring phytoalexin, has been reported to exert cardio-protective effects in several animal studies. However, the outcome of initial clinical trials with RSV was less effective compared to pre-clinical studies. Therefore, RSV treatment protocols need to be optimized. In this study we evaluated prophylactic versus therapeutic effect of resveratrol (RSV) in mitigating doxorubicin (Dox)-induced cardiac toxicity in rats. To investigate prophylactic effects, RSV was supplemented for 2 weeks along with Dox administration...
2017: PloS One
https://www.readbyqxmd.com/read/28727579/enhanced-anticancer-efficacy-of-histone-deacetyl-inhibitor-suberoylanilide-hydroxamic-acid-in-combination-with-a-phosphodiesterase-inhibitor-pentoxifylline-in-human-cancer-cell-lines-and-in-vivo-tumor-xenografts
#7
Saranya Nidhyanandan, Boreddy S Thippeswamy, Kottapalli B Chandrasekhar, Neetinkumar D Reddy, Nagaraj M Kulkarni, Kandasamy Karthikeyan, Farhin R Khan, Jayaprakash Raghul, Govindharajan Vijaykanth, Shridhar Narayanan
Vorinostat [suberoylanilide hydroxamic acid (SAHA)], a histone deacetylase inhibitor, shows limited clinical activity against solid tumors when used alone. The methyl xanthine drug, pentoxifylline (PENT), has been described to have antitumor properties. The aim of this study was to look for the enhanced anticancer activities of both agents when used in combination at doses lower than their respective efficacy dose when used alone. We investigated the antitumor potential of this novel combination in vitro and in vivo...
July 19, 2017: Anti-cancer Drugs
https://www.readbyqxmd.com/read/28727574/flexible-ligated-ruthenium-ii-self-assemblies-sensitizes-glioma-tumor-initiating-cells-in-vitro
#8
Palani Elumalai, Neha Kaushik, Dong Hwan Kim, Hyunuk Kim, Su Jae Lee, Eun Ha Choi, Ki-Whan Chi, Nagendra Kumar Kaushik
The tumorigenic potentials of residual cancer stem-like cells within tumors represent limitations of current cancer therapies. Here, the authors describe the effects of synthesized flexible, ligated, supramolecular self-assembled chair type tetranuclear ruthenium (II) metallacycles (2-5) on glioblastoma and glioma stem like cells. These self-assemblies were observed to be selectively toxic to glioma cells and CD133-positive glioma stem like cells population. Of the self-assembled compounds tested, metallacycle 4 more efficiently induced glioma stem like cells death within a brain cancer cell population and simultaneously inhibited the formation of free-floating gliospheres by reducing the sphere size...
July 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28727388/lysozyme-gene-treatment-in-testosterone-induced-benign-prostate-hyperplasia-rat-model-and-comparasion-of-its-effectiveness-with-botulinum-toxin-injection
#9
Osman Ergün, Pinar Aslan Koşar, İbrahim Onaran, Hakan Darici, Alim Koşar
OBJECTIVES: To compare the effects and histopathological changes of botulinum neurotoxin type A and lysozyme gene injections into prostate tissue within a testosterone induced benign prostate hyperplasia rat model. MATERIALS AND METHODS: 40 male Wistar rats were randomized into four Groups. Group-1: Control, Group-2: Testosterone replacement, Group-3: Testosterone+botulinum neurotoxin type A, Group-4: Testosterone+plazmid DNA/liposome complex. RESULTS: Estimated prostate volume of the testosterone injected Groups were higher than the control (p <0...
July 20, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28727070/short-term-heat-stress-causes-altered-intracellular-signaling-in-oxidative-skeletal-muscle
#10
S Ganesan, C M Summers, S C Pearce, N K Gabler, R J Valentine, L H Baumgard, R P Rhoads, J T Selsby
Heat stress (HS) causes morbidities and mortalities, in part by inducing organ-specific injury and dysfunction. Further, HS markedly reduces farm animal productivity, and this is especially true for lean tissue accretion. The purpose of this investigation was to determine the extent to which short-term HS caused muscle dysfunction in skeletal muscle. We have previously found increased free radical injury in skeletal muscle following 24 h of HS. Thus, we hypothesized that HS would lead to apoptosis, autophagy, and decreased mitochondrial content in skeletal muscle...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726958/wasabia-japonica-is-a-potential-functional-food-to-prevent-colitis-via-inhibiting-the-nf-%C3%AE%C2%BAb-signaling-pathway
#11
Ju-Hee Kang, Seungho Choi, Jeong-Eun Jang, Prakash Ramalingam, Young Tag Ko, Sun Yeou Kim, Seung Hyun Oh
Inflammatory bowel diseases (IBDs), including Crohn's disease (CD) and ulcerative colitis (UC), are prevalent and debilitating health problems worldwide. Many types of drugs are used to treat IBDs, but they exhibit adverse effects such as vomiting, nausea, abdominal pain, diarrhea, etc. In order to overcome the limitations of current therapeutic drugs, scientists have searched for functional foods from natural resources. In this study, we investigated the anti-colitic effects of Wasabia japonica extract in a DSS-induced colitis model...
July 20, 2017: Food & Function
https://www.readbyqxmd.com/read/28726929/sesamin-prevents-apoptosis-and-inflammation-after-experimental-myocardial-infarction-by-jnk-and-nf-%C3%AE%C2%BAb-pathways
#12
Di Fan, Zheng Yang, Yuan Yuan, Qing-Qing Wu, Man Xu, Ya-Ge Jin, Qi-Zhu Tang
Myocardial infarction is a devastating event, especially when reperfusion is not performed. The inflammatory response has been associated with the pathogenesis of left ventricular remodeling after myocardial infarction. This study focused on the anti-apoptotic and anti-inflammatory effects of sesamin on ligation of the left anterior descending artery in an experimental mouse model and the potential mechanism underlying the activation of JNK and NF-κB pathways. Mice with MI induced by surgical left anterior descending coronary artery ligation were treated with sesamin by gavage for 1 week...
July 20, 2017: Food & Function
https://www.readbyqxmd.com/read/28726783/kmt2a-promotes-melanoma-cell-growth-by-targeting-htert-signaling-pathway
#13
Changlin Zhang, Chen Song, Tianze Liu, Ranran Tang, Miao Chen, Fan Gao, Binyi Xiao, Ge Qin, Fen Shi, Wenbin Li, Yixin Li, Xiaoyan Fu, Dingbo Shi, Xiangsheng Xiao, Lan Kang, Wenlin Huang, Xiaojun Wu, Bing Tang, Wuguo Deng
Melanoma is an aggressive cutaneous malignancy, illuminating the exact mechanisms and finding novel therapeutic targets are urgently needed. In this study, we identified KMT2A as a potential target, which promoted the growth of human melanoma cells. KMT2A knockdown significantly inhibited cell viability and cell migration and induced apoptosis, whereas KMT2A overexpression effectively promoted cell proliferation in various melanoma cell lines. Further study showed that KMT2A regulated melanoma cell growth by targeting the hTERT-dependent signal pathway...
July 20, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28726782/pkc%C3%AE-phosphorylates-traf2-to-protect-against-intestinal-ischemia-reperfusion-induced-injury
#14
Wei Zhou, Jihong Yao, Guangzhi Wang, Zhao Chen, Zhenlu Li, Dongcheng Feng, Yang Li, Wasim Qasim, Wenzhi Tan, Shili Ning, Xiaofeng Tian
Intestinal ischemia-reperfusion (I/R) is a common clinical problem that occurs during various clinical pathological processes. Excessive apoptosis has an indispensable role in intestinal I/R injury. Tumor necrosis factor receptor-associated factor 2 (TRAF2) and PKCζ have an essential role in apoptosis. Here, we aimed to investigate the effects of PKCζ and TRAF2 and to explore the correlation between PKCζ and TRAF2 in intestinal I/R injury. Mice were subjected to intestinal I/R injury in vivo. In vitro experiments were conducted by treating Caco-2 cells with hypoxia/reoxygenation (H/R) stimulation to simulate intestinal I/R...
July 20, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28726778/protection-of-mcc950-against-high-glucose-induced-human-retinal-endothelial-cell-dysfunction
#15
Yi Zhang, Xuehua Lv, Zizhong Hu, Xiaojian Ye, Xinhua Zheng, Yuzhi Ding, Ping Xie, Qinghuai Liu
Diabetic retinopathy (DR) is a well-known microvascular complication related to inflammation. Mcc950 is a potent and specific inhibitor of the NLRP3 inflammasome but its influence on DR has not been studied. Thus, we evaluated the anti-inflammatory effects of Mcc950 on high-glucose-induced human retinal endothelial cells (HRECs) and the potential underlying mechanism. In surgical excised proliferative membranes from DR patients, high expression of NLRP3, caspase 1 and IL-1β was observed and co-localization of NLRP3 and IL-1β occurred in CD31+ labeled HRECs...
July 20, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28726777/humanin-g-hng-protects-age-related-macular-degeneration-amd-transmitochondrial-arpe-19-cybrids-from-mitochondrial-and-cellular-damage
#16
Sonali Nashine, Pinchas Cohen, Marilyn Chwa, Stephanie Lu, Anthony B Nesburn, Baruch D Kuppermann, M Cristina Kenney
Age-related macular degeneration (AMD) ranks third among the leading causes of visual impairment with a blindness prevalence rate of 8.7%. Despite several treatment regimens, such as anti-angiogenic drugs, laser therapy, and vitamin supplementation, being available for wet AMD, to date there are no FDA-approved therapies for dry AMD. Substantial evidence implicates mitochondrial damage and retinal pigment epithelium (RPE) cell death in the pathogenesis of AMD. However, the effects of AMD mitochondria and Humanin G (HNG), a more potent variant of the mitochondrial-derived peptide (MDP) Humanin, on retinal cell survival have not been elucidated...
July 20, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28726773/t-cell-autonomous-death-induced-by-regeneration-of-inert-glucocorticoid-metabolites
#17
Lourdes Rocamora-Reverte, Holger M Reichardt, Andreas Villunger, GJan Wiegers
Glucocorticoids (GC) are essential regulators of T-cell development and function. Activation of the immune system increases systemic adrenal-derived GC levels which downregulate immune activity as part of a negative feedback control system. Increasing evidence shows, however, that GC can also be derived from extra-adrenal sources such as the thymus or intestine, thus providing local control of GC-mediated effects. The thymus reportedly produces GC, but whether thymic epithelial cells or thymocytes produce GC acting either in an autocrine or paracrine fashion is not clear...
July 20, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28726772/mice-lacking-nf-%C3%AE%C2%BAb1-exhibit-marked-dna-damage-responses-and-more-severe-gastric-pathology-in-response-to-intraperitoneal-tamoxifen-administration
#18
Michael D Burkitt, Jonathan M Williams, Tristan Townsend, Rachael Hough, DMark Pritchard
Tamoxifen (TAM) has recently been shown to cause acute gastric atrophy and metaplasia in mice. We have previously demonstrated that the outcome of Helicobacter felis infection, which induces similar gastric lesions in mice, is altered by deletion of specific NF-κB subunits. Nfkb1(-/-) mice developed more severe gastric atrophy than wild-type (WT) mice 6 weeks after H. felis infection. In contrast, Nfkb2(-/-) mice were protected from this pathology. We therefore hypothesized that gastric lesions induced by TAM may be similarly regulated by signaling via NF-κB subunits...
July 20, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28726723/mertensene-a-halogenated-monoterpene-induces-g2-m-cell-cycle-arrest-and-caspase-dependent-apoptosis-of-human-colon-adenocarcinoma-ht29-cell-line-through-the-modulation-of-erk-1-2-akt-and-nf-%C3%AE%C2%BAb-signaling
#19
Safa Tarhouni-Jabberi, Ons Zakraoui, Efstathia Ioannou, Ichrak Riahi-Chebbi, Meriam Haoues, Vassilios Roussis, Riadh Kharrat, Khadija Essafi-Benkhadir
Conventional treatment of advanced colorectal cancer is associated with tumor resistance and toxicity towards normal tissues. Therefore, development of effective anticancer therapeutic alternatives is still urgently required. Nowadays, marine secondary metabolites have been extensively investigated due to the fact that they frequently exhibit anti-tumor properties. However, little attention has been given to terpenoids isolated from seaweeds. In this study, we isolated the halogenated monoterpene mertensene from the red alga Pterocladiella capillacea (S...
July 20, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28726291/high-dose-humanin-analogue-applied-during-ischemia-exerts-cardioprotection-against-ischemia-reperfusion-injury-by-reducing-mitochondrial-dysfunction
#20
Savitree Thummasorn, Krekwit Shinlapawittayatorn, Siriporn C Chattipakorn, Nipon Chattipakorn
Although the gold standard treatment for acute myocardial infarction is reperfusion therapy, reperfusion itself can cause myocardial damage via induction of cardiac mitochondrial dysfunction. This can lead to increased myocardial infarct size, arrhythmias and left ventricular (LV) dysfunction. Recently, a newly discovered peptide, Humanin, has been shown to exert several beneficial effects including anti-oxidative and anti-apoptosis effects. We recently reported that a Humanin analogue (HNG, 84 μg/kg) given prior to cardiac ischemia exerted cardioprotection against I/R injury, but failed to do so when it was given after ischemia was induced...
July 20, 2017: Cardiovascular Therapeutics
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