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https://www.readbyqxmd.com/read/29792955/fisetin-alleviates-oxidative-stress-after-traumatic-brain-injury-via-the-nrf2-are-pathway
#1
Li Zhang, Handong Wang, Yali Zhou, Yihao Zhu, Maoxin Fei
Fisetin, a natural flavonoid, has neuroprotection properties in many brain injury models. However, its role in traumatic brain injury (TBI) has not been fully explained. In the present study, we aimed to explore the neuroprotective effects of fisetin in a mouse model of TBI. We found that fisetin improved neurological function, reduced cerebral edema, attenuated brain lesion and ameliorated blood-brain barrier (BBB) disruption after TBI. Moreover, the up-regulation of malondialdehyde (MDA) and the activity of glutathione peroxidase (GPx) were reversed by fisetin treatment...
May 21, 2018: Neurochemistry International
https://www.readbyqxmd.com/read/29792952/anticancer-mechanism-of-sinapic-acid-in-pc-3-and-lncap-human-prostate-cancer-cell-lines
#2
Canan Eroğlu, Ebru Avcı, Hasibe Vural, Ercan Kurar
Sinapic acid (SA) is a derivative of hydroxycinnamic acid and found in various vegetables and fruit species. Aim was to evaluate the anticancer effects of SA in PC-3 and LNCaP human prostate cancer cells. The effect of SA on cell viability was determined using XTT assay. Expressions of 8 genes for apoptosis and 6 genes for metastasis were evaluated by qPCR. Caspase-3 activity was determined using caspase-3 colorimetric assay kit. Effect of SA on cell invasion was evaluated with cell invasion assay. The IC50 dose of SA in PC-3 and LNCaP cells was found to be 1000 μM for 72 h...
May 21, 2018: Gene
https://www.readbyqxmd.com/read/29792945/cross-linking-by-epichlorohydrin-and-diepoxybutane-correlates-with-cytotoxicity-and-leads-to-apoptosis-in-human-leukemia-hl-60-cells
#3
Phuong M Le, Vanesa L Silvestri, Samuel C Redstone, Jordanne B Dunn, Julie T Millard
The bifunctional alkylating agents epichlorohydrin (ECH) and diepoxybutane (DEB) have been linked to increased cancer risks in industrial workers. These compounds react with DNA and proteins, leading to genotoxic effects. We used the comet assay to monitor formation of cross-links in HL-60 cells treated with ECH, DEB, and the structurally related anti-cancer drug mechlorethamine (HN2). We report a time- and dose-dependent cytotoxicity that correlated with cross-linking activity, following the order HN2 > DEB > ECH...
May 21, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29792912/heat-shock-protein-b1-is-required-for-the-prolactin-induced-cytoprotective-effects-on-pancreatic-islets
#4
Rosangela Am Wailemann, Letícia F Terra, Talita C de Oliveira, Ancély F Dos Santos, Vinícius M Gomes, Leticia Labriola
The success of islet transplantation has improved lately. Unfortunately, it is still compromised by cell loss. We have shown that prolactin (PRL) inhibits beta-cell apoptosis and up-regulates the antiapoptotic Heat Shock Protein B1 (HSPB1) in human islets. Since its function in pancreatic islets has not been studied, we explored the role of HSPB1 in PRL-induced beta-cell survival. The significant PRL-induced cytoprotection in control cells was abrogated in HSPB1 silenced cells, overexpression of HSPB1 recovered survival...
May 21, 2018: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/29792865/aspirin-restores-abt-737-mediated-apoptosis-in-human-renal-carcinoma-cells
#5
Yen-Chuan Ou, Jian-Ri Li, Jiaan-Der Wang, Wen-Ying Chen, Yu-Hsiang Kuan, Ching-Ping Yang, Su-Lan Liao, Hsi-Chi Lu, Chun-Jung Chen
Aspirin is a novel chemopreventive agent against malignancy. However, outcomes of aspirin monotherapy of renal cell carcinoma (RCC) are inconsistent across studies. ABT-737, an BH3 mimetic inhibitor, is also a promising antitumor drug. Cancer cells including those from RCC, that have high levels of Mcl-1, are refractory to ABT-737-induced apoptosis. We here investigated how aspirin treatment modulates the ABT-737-induced apoptosis. Using the in vitro model of human 786-O cells, we showed that aspirin had sensitized cells to ABT-737 induced apoptosis...
May 21, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29792857/tgf-%C3%AE-plays-a-vital-role-in-triple-negative-breast-cancer-tnbc-drug-resistance-through-regulating-stemness-emt-and-apoptosis
#6
Xiaodan Xu, Lu Zhang, Xiaogang He, Ping Zhang, Caihong Sun, Xiaojun Xu, Yaojuan Lu, Feifei Li
Triple negative breast cancer (TNBC) is the most malignant subtype of breast cancer in which the cell surface lacks usual targets for drug to exhibit its effects. Epirubicin (Epi) is widely used for TNBC, but a substantial number of patients develop Epi resistance that is usually associated with poor prognosis. Transforming growth factor (TGF-β) is a multifunctional cytokine. In recent study, it appears that TGF-β influences the cancer stem cell population, thus, the drug resistance of cancer may also be affected...
May 21, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29792338/molecular-mechanism-for-the-influence-of-gender-dimorphism-on-alcoholic-liver-injury-in-mice
#7
S-Q Li, P Wang, D-M Wang, H-J Lu, R-F Li, L-X Duan, S Zhu, S-L Wang, Y-Y Zhang, Y-L Wang
It is known that women develop alcoholic liver injury more rapidly and have a lower alcohol toxic threshold than men. However, the detailed molecular mechanisms remain unclear. The precise mechanism responsible for the sex difference needs to be determined. Female and male mice were given ethanol by intragastric infusion every day for 4 weeks. The pathological changes were detected by hematoxylin-eosin, Sirius red, oil red O, periodic acid-Schiff, and Hochest33258 staining in the liver of female and male mice...
January 1, 2018: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/29790592/hepatitis-b-virus-upregulated-lnc-hur1-promotes-cell-proliferation-and-tumorigenesis-by-blocking-p53-activity
#8
Ningning Liu, Qi Liu, Xiaohai Yang, Fang Zhang, Xinda Li, Yuanwu Ma, Feifei Guan, Xin Zhao, Zhiwei Li, Lianfeng Zhang, Xin Ye
Recent studies have indicated that a number of lncRNAs are dysregulated in hepatocellular carcinoma, while their aberrant expressions are associated with tumorigenesis and poor prognosis. To identify HBV-related lncRNAs, we used RNA deep sequencing to quantify the abundances of lncRNAs in HepG2 cells and HBV transgenic HepG2-4D14 cells. Here, we demonstrate that lnc-HUR1 is significantly upregulated in HepG2-4D14 cells. We found that HBV-encoded HBx can enhance the transcription of lnc-HUR1. Overexpression of lnc-HUR1 promotes cell proliferation, while knockdown of lnc-HUR1 inhibits cell growth...
May 23, 2018: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29790427/simulated-microgravity-culture-enhances-the-neuroprotective-effects-of-human-cranial-bone-derived-mesenchymal-stem-cells-in-traumatic-brain-injury
#9
Takashi Otsuka, Takeshi Imura, Kei Nakagawa, Looniva Shrestha, Shinya Takahashi, Yumi Kawahara, Taijiro Sueda, Kaoru Kurisu, Louis Yuge
Fundamental cures of central nervous system (CNS) diseases are rarely achieved due to the low regenerative ability of the CNS. Recently, cell-based therapy using mesenchymal stem cells (MSCs) has been explored as effective treatments for CNS diseases. Among the various tissue-derived MSCs, we have isolated human cranial bone-derived MSCs (cMSCs) in our laboratory. In addition, we have focused on simulated microgravity (MG) as a valuable culture environment of MSCs. However, the detailed mechanisms underlying functional recovery from the transplantation of MSCs cultured under MG conditions remain unclear...
May 23, 2018: Stem Cells and Development
https://www.readbyqxmd.com/read/29790425/hypoxic-preconditioning-reduces-propofol-induced-neuroapoptosis-via-regulation-of-bcl-2-and-bax-and-downregulation-of-activated-caspase-3-in-the-hippocampus-of-neonatal-rats
#10
Jing Lv, Yubing Liang, Youbing Tu, Jing Chen, Yubo Xie
OBJECTIVE:  Evidence has shown that propofol may cause widespread apoptotic neurodegeneration. Hypoxic preconditioning (HPC) was previously demonstrated to provide neuroprotection and brain recovery from either acute or chronic neurodegeneration in several cellular and animal models. Therefore, the present study was designed to investigate the protective effects of hypoxic preconditioning on apoptosis caused by propofol in neonatal rats. METHODS: Propofol (100 mg/kg) was given to 7-day-old (P7) Sprague Dawley pups...
May 23, 2018: Neurological Research
https://www.readbyqxmd.com/read/29789603/vorinostat-and-quinacrine-have-synergistic-effects-in-t-cell-acute-lymphoblastic-leukemia-through-reactive-oxygen-species-increase-and-mitophagy-inhibition
#11
Bo Jing, Jin Jin, Rufang Xiang, Meng Liu, Li Yang, Yin Tong, Xinhua Xiao, Hu Lei, Wei Liu, Hanzhang Xu, Jiong Deng, Li Zhou, Yingli Wu
Despite recent progress in the treatment, the outcome of adult acute T-cell lymphoblastic leukemia (T-ALL) is poor. Development of novel approach to combat this disease is urgently required. Vorinostat, a pan-histone deacetylase (HDAC) inhibitor, exerts promising anticancer activity in a variety of solid and hematologic malignancies. However, the efficacy of vorinostat monotherapy is unsatisfactory. Here, we show that quinacrine (QC), an anti-malaria drug with potent autophagy inhibitory activity, could synergistically enhance vorinostat-induced cell death at a non-toxic concentration...
May 22, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29788929/resveratrol-induces-autophagy-dependent-apoptosis-in-hl-60-cells
#12
Yingying Fan, Jen-Fu Chiu, Jing Liu, Yan Deng, Cheng Xu, Jun Zhang, Guanwu Li
BACKGROUND: All known mechanisms of apoptosis induced by resveratrol act through cell cycle arrest and changes in mitochondrial membrane potential. It is currently unknown whether resveratrol-induced apoptosis is associated with other physiological processes, such as autophagy. METHODS: Apoptosis-related markers involved in the intrinsic and extrinsic apoptotic pathways, and autophagic markers were detected by using western blotting and immunofluorescence. Mitochondrial membrane potential was assayed by flow cytometry...
May 22, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29788725/tetramethylpyrazine-tmpz-triggers-s-phase-arrest-and-mitochondria-dependent-apoptosis-in-lung-cancer-cells
#13
H H Huang, F B Liu, Z Ruan, J Zheng, Y J Su, J Wang
Tetramethylpyrazine (TMPZ) is one of the active compounds extracted from the traditional Chinese herb Chuanxiong. Several studies have shown its anti-cancer properties. However, its functions in lung cancer and the underlying cellular mechanisms are relatively unknown. Our present study aimed to investigate the effects of TMPZ on A549 and 95D cells. The MTT assay showed that TMPZ decreased cell viability in a dose- and time-dependent manner. The results of the colony formation assay indicated that TMPZ strongly suppressed colony formation ability in A549 and 95D cells...
March 14, 2018: Neoplasma
https://www.readbyqxmd.com/read/29788101/left-ventricular-stroke-volume-in-severe-aortic-stenosis-and-preserved-left-ventricular-ejection-fraction-prognostic-relevance
#14
Victoria Delgado, Jeroen J Bax
No abstract text is available yet for this article.
May 16, 2018: European Heart Journal
https://www.readbyqxmd.com/read/29787771/inhibition-of-pten-protects-pc12-cells-against-oxygen-glucose-deprivation-induced-cell-death-through-mitoprotection
#15
Fereshteh Farajdokht, Gisou Mohaddes, Elham Karimi-Sales, Taiebeh Kafshdooz, Javad Mahmoudi, Seyed Mohsen Aberoumandi, Pouran Karimi
Mitochondria involve in the determination of ischemic neuronal cell fate through regulation of apoptotic and necrotic cell death. Phosphatase and tensin homolog (PTEN) protein negatively regulates Akt/PKB signaling which is the major cell survival pathway. The current study aimed to examine the impact of SF1670, a potent PTEN inhibitor, on mitochondria-mediated cell survival pathways in an in vitro stroke-like model. PC12 cells were exposed to one hour oxygen and glucose deprivation (OGD) followed by different time points of reperfusion (0, 30, 60, 120 and 180 min) and SF1670 treatments...
May 19, 2018: Brain Research
https://www.readbyqxmd.com/read/29786748/protective-effects-of-dehydrocostuslactone-on-rat-hippocampal-slice-injury-induced-by-oxygen%C3%A2-glucose-deprivation-reoxygenation
#16
Qipeng Zhao, Ailing Chen, Xiaobo Wang, Zhuanzhuan Zhang, Yunsheng Zhao, Yu Huang, Shuanglai Ren, Yafei Zhu
The present study aimed to investigate the protective effects of dehydrocostuslactone (DHL) against rat hippocampal slice injury caused by oxygen‑glucose deprivation/reoxygenation (OGD/R). Rat hippocampal slice injury was induced by OGD/R in vitro, and the degree of injury was evaluated through a lactate dehydrogenase (LDH) assay and 2,3,5‑triphenyltetrazolium chloride (TTC) staining. The protein expression levels of B‑cell lymphoma-2 (Bcl‑2), Bcl‑2‑associated X protein (Bax), cytochrome c (cyt‑c), apoptotic protease activating factor 1 (apaf‑1), caspase‑9, caspase‑7, caspase‑3, sequestosome 1 (SQSTM1) and microtubule‑associated protein 1 light chain 3 (LC3) were analyzed through western blot analysis...
May 17, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29786737/anti-amyloidogenic-properties-of-an-ethyl-acetate-fraction-from-actinidia-arguta-in-a%C3%AE-1-42-induced-icr-mice
#17
Jeong Su Ha, Jong Min Kim, Seon Kyeong Park, Jin Yong Kang, Du Sang Lee, Uk Lee, Dae-Ok Kim, Sung-Gil Choi, Ho Jin Heo
This study aimed to investigate the ameliorating effect of an ethyl acetate fraction from the fruit Actinidia arguta (EFAA) on amyloid beta (Aβ)-induced neurotoxicity and cognitive deficits in ICR mice. EFAA showed potent protective effects against Aβ-induced neurotoxicity through 2',7'-dichlorofluorescein diacetate (DCF-DA), 2',3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) and lactate dehydrogenase (LDH) release into the assay medium. EFAA treatment reduced the intracellular ROS level and lactate dehydrogenase (LDH) release in the mitochondria, and increased cell viability in Aβ-induced neuroblastoma MC-IXC cells...
May 22, 2018: Food & Function
https://www.readbyqxmd.com/read/29785894/developmental-and-molecular-responses-of-buffalo-bubalus-bubalis-cumulus-oocyte-complex-matured-in-vitro-under-heat-shock-conditions
#18
Ashraf El-Sayed, Rehab Nagy, Amal K El-Asheeri, Liala N Eid
SummaryTo investigate the effects of physiologically relevant heat shock during oocyte maturation, buffalo cumulus-oocyte complexes (COCs) were cultured at 38.5°C (control) or were exposed to 39.5°C (T1) or 40.5°C (T2) for the first 6 h of in vitro maturation (IVM), followed by 38.5°C through the next 18 h/IVM and early embryonic development up to the blastocyst stage. Gene expression analysis was performed on selected target genes (HSF-1, HSF-2, HSP-70, HSP-90, BAX, p53, SOD1, COX1, MAPK14) in denuded oocytes and their isolated cumulus cells resulting from control COCs as well as from COCs exposed to a temperature of 39...
May 22, 2018: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/29785122/aloperine-executes-antitumor-effects-through-the-induction-of-apoptosis-and-cell-cycle-arrest-in-prostate-cancer-in-vitro-and-in-vivo
#19
Zhixin Ling, Han Guan, Zonghao You, Can Wang, Ling Hu, Lei Zhang, Yiduo Wang, Shuqiu Chen, Bin Xu, Ming Chen
Background: Prostate cancer (PCa) is one of the most common malignant diseases among male patients. Although androgen deprivation therapy remains the main treatment for PCa, most patients would inevitably progress to castration-resistant PCa, which is the main cause of cancer-related deaths. Thus, novel antitumor agents are urgently needed. Recent studies demonstrated that aloperine (ALO) as a natural alkaloid showed antitumor effects in other cancer types. However, the biological function and underlying mechanisms of ALO in PCa have not been investigated...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29784641/intrinsic-apoptosis-circumvents-the-functional-decline-of-circulating-platelets-but-does-not-cause-the-storage-lesion
#20
Irina Pleines, Marion Lebois, Pradnya Gangatirkar, Amanda E Au, Rachael M Lane, Katya J Henley, Maria Kauppi, Jason Corbin, Ping Cannon, Jonathan Bernardini, Imala Alwis, Kate E Jarman, Sarah Ellis, Donald Metcalf, Shaun P Jackson, Simone M Schoenwaelder, Benjamin T Kile, Emma C Josefsson
The circulating life span of blood platelets is regulated by the pro-survival protein BCL-XL. It restrains the activity of BAK and BAX, the essential pro-death mediators of intrinsic apoptosis. Disabling the platelet intrinsic apoptotic pathway in mice by deleting BAK and BAX results in a doubling of platelet life span and concomitant thrombocytosis. Apoptotic platelets expose phosphatidylserine (PS) via a mechanism that is distinct from that driven by classical agonists. Whether there is any role for apoptotic PS in platelet function in vivo, however, is unclear...
May 21, 2018: Blood
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