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https://www.readbyqxmd.com/read/28092770/magnolin-inhibits-prostate-cancer-cell-growth-in-vitro-and-in-vivo
#1
Yeqing Huang, Xiangyu Zou, Xiaowen Zhang, Feng Wang, Weidong Zhu, Guangyuan Zhang, Jun Xiao, Ming Chen
BACKGROUND: Magnolin is the most active ingredient in the herb Magnolia fargesii, which has been traditionally used in oriental medicine to treat headaches and nasal congestion. Recent researches demonstrate that Magnolin inhibits cancer cell migration and invasion. MATERIALS AND METHODS: This study used cell culture and the BALB/c nu/nu mouse xenograft model to investigate whether or not magnolin can inhibit the growth of PC3 and Du145 prostate cancer cells. MTT assay and flow cytometry were performed to estimate the proliferation, cycle, and apoptosis of the cells in vitro...
January 13, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28092180/n-acetylcysteine-a-possible-protector-against-indomethacin-induced-peptic-ulcer-crosstalk-between-antioxidant-anti-inflammatory-and-antiapoptotic-mechanisms
#2
Nema Ali Soliman, Doaa Hussein Zineldeen, Mohamed Alaa Katary, Darin Abd Ali
This study investigated the gastroprotective effects of N-acetylcysteine (NAC) against indomethacin-induced gastric ulcer in rats. Ulceration was induced by a single oral administration of indomethacin (30 mg/kg). 50 male albino rats were allocated into 5 equal groups: control group received normal saline orally, indomethacin group rats received normal saline orally for 5 days and indomethacin (50 mg/kg) on the last day, ranitidine group received ranitidine (reference drug) orally for 5 days (50 mg/kg) before receiving indomethacin (50 mg/kg) on the last day, and NAC groups received NAC orally at 300 and 500 mg/kg, respectively, for 5 days before receiving indomethacin (50 mg/kg) on the last day...
November 14, 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28092085/evidence-that-nf-%C3%AE%C2%BAb-and-mapk-signaling-promotes-nlrp-inflammasome-activation-in-neurons-following-ischemic-stroke
#3
David Yang-Wei Fann, Yun-An Lim, Yi-Lin Cheng, Ker-Zhing Lok, Prasad Chunduri, Sang-Ha Baik, Grant R Drummond, S Thameem Dheen, Christopher G Sobey, Dong-Gyu Jo, Christopher Li-Hsian Chen, Thiruma V Arumugam
Multi-protein complexes, termed "inflammasomes," are known to contribute to neuronal cell death and brain injury following ischemic stroke. Ischemic stroke increases the expression and activation of nucleotide-binding oligomerization domain (NOD)-like receptor (NLR) Pyrin domain containing 1 and 3 (NLRP1 and NLRP3) inflammasome proteins and both interleukin (IL)-1β and IL-18 in neurons. In this study, we provide evidence that activation of either the NF-κB and MAPK signaling pathways was partly responsible for inducing the expression and activation of NLRP1 and NLRP3 inflammasome proteins and that these effects can be attenuated using pharmacological inhibitors of these two pathways in neurons and brain tissue under in vitro and in vivo ischemic conditions, respectively...
January 14, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28091910/inhibition-of-apoptosis-stages-of-human-blood-lymphocytes-after-exposure-to-carbon-monoxide-in-the-presence-of-recombinant-interleukin-2
#4
V G Artyukhov, O I Tyunina
We studied the effect of carbon monoxide (60-, 75-, and 90-min exposure) on the expression of antiapoptotic proteins (survivin and Bcl-2) in human blood lymphocytes in the presence of recombinant IL-2 in an apoptosis-inducing dose (0.1 ng/ml). Incubation of cells in atmosphere with carbon monoxide in the presence of recombinant IL-2 was accompanied by accumulation of Bcl-2 protein with simultaneous decrease of survivin content. It was concluded that carbon monoxide plays a role in the dysregulation of apoptosis of human blood lymphocytes Bcl-2 (i...
January 14, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28090796/impact-of-c-rel-inhibition-of-cord-blood-derived-b-t-and-nk-cells
#5
Shirin Fallahi, Seyede Momeneh Mohammadi, Hamid Tayefi Nasrabadi, Alireza Alihemmati, Naser Samadi, Sanaz Gholami, Dariush Shanehbandi, Hojjatollah Nozad Charoudeh
The c-Rel transcription factor is a unique member of the nuclear factor (NF)-κB family that has a role in curtailing the proliferation, differentiation, cytokine production, and overall activity of B- and T-cells. In addition, c-Rel is a key regulator of apoptosis in that it influences the expression of anti-apoptotic genes such as Bcl-2 and Bcl-xL; conversely, inhibition of c-Rel increases cell apoptosis. To better understand the relationship between c-Rel expression and effects on B- and T-cell expansion, the current study evaluated c-Rel expression in cord blood mononuclear cells...
January 16, 2017: Journal of Immunotoxicology
https://www.readbyqxmd.com/read/28090686/effectively-enhancing-cytotoxic-and-apoptotic-effects-of-alpha-momorcharin-by-integrating-a-heparin-binding-peptide
#6
Meng-Jie Tan, Xue-Wei Cao, Peng-Fei Li, Yi-Zhou Zhai, Yu Zhou, Ye-Jun Liu, Jian Zhao, Fu-Jun Wang
Alpha-momorcharin (α-MMC), a type I ribosome inactivating protein, has attracted a great deal attention because of its antitumor activity. However, the cytotoxicity of α-MMC is limited due to insufficient cellular internalization in cancer cells. To enhance the cytotoxicity of α-MMC, a heparin-binding domain derived from HB-EGF (named HBP) was used as a cell-penetrating peptide and fused to the C-terminus of α-MMC. This novel α-MMC-HBP fusion protein was expressed and purified with a Ni(2+) -resin. The N-glycosidase activity and DNase activity assay indicated that the introduction of HBP did not interfere with the intrinsic bioactivities of α-MMC...
January 16, 2017: Biotechnology and Applied Biochemistry
https://www.readbyqxmd.com/read/28090298/in-situ-expression-of-bcl-2-in-pulmonary-artery-endothelial-cells-associates-with-pulmonary-arterial-hypertension-relative-to-heart-failure-with-preserved-ejection-fraction
#7
Raymond L Benza, Gretchen Williams, Changgong Wu, Kelly J Shields, Amresh Raina, Srinivas Murali, Michael J Passineau
We have previously reported that pulmonary artery endothelial cells (PAECs) can be harvested from the tips of discarded Swan-Ganz catheters after right heart catheterization (RHC). In this study, we tested the hypothesis that the existence of an antiapoptotic phenotype in PAECs obtained during RHC is a distinctive feature of pulmonary arterial hypertension (PAH; World Health Organization group 1) and might be used to differentiate PAH from other etiologies of pulmonary hypertension. Specifically, we developed a flow cytometry-based measure of Bcl-2 activity, referred to as the normalized endothelial Bcl-2 index (NEBI)...
December 2016: Pulmonary Circulation
https://www.readbyqxmd.com/read/28089945/zearalenone-exposure-impairs-ovarian-primordial-follicle-formation-via-down-regulation-of-lhx8-expression-in-vitro
#8
Guo-Liang Zhang, Xiao-Feng Sun, Yan-Zhong Feng, Bo Li, Ya-Peng Li, Fan Yang, Charles Martin Nyachoti, Wei Shen, Shi-Duo Sun, Lan Li
Zearalenone (ZEA) is an estrogenic mycotoxin mainly produced as a secondary metabolite by numerous species of Fusarium. Previous work showed that ZEA had a negative impact on domestic animals with regard to reproduction. The adverse effects and the mechanisms of ZEA on mammalian ovarian folliculogenesis remain largely unknown, particularly its effect on primordial follicle formation. Thus, we investigated the biological effects of ZEA exposure on murine ovarian germ cell cyst breakdown and primordial follicle assembly...
January 12, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28089921/penehyclidine-hydrochloride-prevents-anoxia-reoxygenation-injury-and-induces-h9c2-cardiomyocyte-apoptosis-via-a-mitochondrial-pathway
#9
Zhaoqi Wang, Duomao Lin, Liang Zhang, Wenjun Liu, Hongbao Tan, Jun Ma
Penehyclidine hydrochloride (PHC) is an anticholinergic drug that has been widely used in the clinic for years, evaluating for anesthetic premedication, anti-muscarinic, or improving microcirculation. However, very little is known about its protective effects against anoxia/reoxygenation (A/R) injury in myocardiocytes. The aim of our study was to investigate the protective effects of PHC pretreatment on A/R injury, as well as the underlying mechanisms involved. To investigate apoptosis, we used the cell viability assay, Annexin-V/PI assay, and lactate dehydrogenase (LDH) and creatine kinase (CK) activity measurements...
January 12, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28089775/degenerative-effects-of-cobalt-chloride-treatment-on-neurons-and-microglia-in-a-porcine-retina-organ-culture-model
#10
S Kuehn, J Hurst, F Rensinghoff, T Tsai, S Grauthoff, Y Satgunarajah, H B Dick, S Schnichels, S C Joachim
In order to understand the pathological processes of retinal diseases, experimental models are necessary. Cobalt, as part of the vitamin B12 complex, is important for neuronal integrity. However, it is known that high quantities of cobalt induce cytotoxic mechanisms via hypoxia mimicry. Therefore, we tested the degenerative effect of cobalt chloride (CoCl2) on neurons and microglia in a porcine retina organ culture model. Organotypic cultures of porcine retinas were cultured and treated with different concentrations of CoCl2 (0, 100, 300 and 500 μM) for 48 h...
January 12, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28089693/effects-of-six-priority-controlled-phthalate-esters-with-long-term-low-dose-integrated-exposure-on-male-reproductive-toxicity-in-rats
#11
Hai-Tao Gao, Run Xu, Wei-Xin Cao, Liang-Liang Qian, Min Wang, Lingeng Lu, Qian Xu, Shu-Qin Yu
Human beings are inevitably exposed to ubiquitous phthalate esters (PEs) surroundings. The purposes of this study were to investigate the effects of long-term low-dose exposure to the mixture of six priority controlled phthalate esters (MIXPs): dimethyl phthalate (DMP), diethyl phthalate (DEP), di(n-butyl) phthalate (DBP), butyl benzyl phthalate (BBP), di(2-ethyhexyl) phthalate (DEHP) and di-n-octyl phthalate (DNOP), on male rat reproductive system and further to explore the underlying mechanisms of the reproductive toxicity...
January 12, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28088836/upregulation-of-long-noncoding-rna-tug1-promotes-cervical-cancer-cell-proliferation-and-migration
#12
Yingying Hu, Xiangwei Sun, Chenchen Mao, Gangqiang Guo, Sisi Ye, Jianfeng Xu, Ruanmin Zou, Jun Chen, Ledan Wang, Ping Duan, Xiangyang Xue
Long noncoding RNAs (lncRNAs), a novel class of transcripts that have critical roles in carcinogenesis and progression, have emerged as important gene expression modulators. Recent evidence indicates that lncRNA taurine-upregulated gene 1 (TUG1) functions as an oncogene in numerous types of human cancers. However, its function in the development of cervical cancer remains unknown. The aim of this research was to investigate the clinical significance and biological functions of TUG1 in cervical cancer. TUG1 was found to be significantly upregulated in cervical cancer tissues and four cervical cancer cell lines by quantitative real-time polymerase chain reaction (qRT-PCR)...
January 15, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28088793/hnrnp-l-mediates-bladder-cancer-progression-by-inhibiting-apoptotic-signaling-and-enhancing-mapk-signaling-pathways
#13
Daojun Lv, Huayan Wu, Rongwei Xing, Fangpeng Shu, Bin Lei, Chengyong Lei, Xumin Zhou, Bo Wan, Yu Yang, Liren Zhong, Xiangming Mao, Yaguang Zou
Heterogeneous nuclear ribonucleoprotein L (hnRNP-L) is a promoter of various kinds of cancers, but its actions in bladder cancer (BC) are unclear. In this study, we investigated the function and the underlying mechanism of hnRNP-L in bladder carcinogenesis. Our results demonstrated that enhanced hnRNP-L expression in BC tissues was associated with poor overall survival of BC patients. Depletion of hnRNP-L significantly suppressed cell proliferation in vitro and inhibited xenograft tumor growth in vivo. Furthermore, downregulation of hnRNP-L resulted in G1-phase cell cycle arrest and enhanced apoptosis accompanied by inhibition of EMT and cell migration...
January 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28088783/%C3%AE-asarone-blocks-7%C3%AE-hydroxycholesterol-exposed-macrophage-injury-through-blocking-elf2%C3%AE-phosphorylation-and-prompting-beclin-1-dependent-autophagy
#14
Sin-Hye Park, Min-Kyung Kang, Yean-Jung Choi, Yun-Ho Kim, Lucia Dwi Antika, Dong Yeon Kim, Eun-Jung Lee, Soon Sung Lim, Young-Hee Kang
Macrophage apoptosis is salient in advanced atherosclerotic lesions and is induced by several stimuli including endoplasmic reticulum (ER) stress. This study examined that α-asarone present in purple perilla abrogated macrophage injury caused by oxysterols via ER stress- and autophagy-mediated mechanisms. Nontoxic α-asarone at 1-20 μM attenuated 7β-hydroxycholesterol-induced activation of eukaryotic initiation factor 2α in macrophages leading to C/EBP homologous protein (CHOP) expression and apoptosis due to sustained ER stress...
January 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28088735/long-non-coding-rna-ccat1-promotes-human-retinoblastoma-so-rb50-and-y79-cells-through-negative-regulation-of-mir-218-5p
#15
Hongxu Zhang, Jianguang Zhong, Zhenyu Bian, Xiang Fang, You Peng, Yongping Hu
OBJECTIVE: To investigate the regulatory role and potential mechanism of long non-coding RNAs (lncRNA) in human retinoblastoma (RB). METHODS: The lncRNA profile in RB tissues were analyzed by microarray and quantitative reverse transcription PCR (qRT-PCR). One of the identified lncRNAs (LncRNA CCAT1) was selected for further experiments. SO-RB50 and Y79 cells were transfected with negative control, siRNA targeting lncRNA CCAT1 (si-CCAT1) and si-CCAT1+miR218-5p inhibitor, respectively...
January 12, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28088698/metformin-enhancing-the-antitumor-efficacy-of-carboplatin-against-ehrlich-solid-carcinoma-grown-in-diabetic-mice-effect-on-igf-1-and-tumoral-expression-of-igf-1-receptors
#16
Dina M Abo-Elmatty, Eman A Ahmed, Mona K Tawfik, Seham A Helmy
Diabetes has been listed as a risk factor for various types of cancer. Cancer cell development can be promoted by increased levels of IGF-1 and hyperinsulinemia that are associated with diabetes type II. Metformin is an anti-diabetic agent and its potential antitumor impact has become the objective of numerous studies. In this vein, we hypothesize that using metformin in diabetes type II mice may synergistic with carboplatin for reducing the risk of cancer. Therefore, the study aimed to evaluate the in vivo antitumor activity of metformin against solid EAC tumor growth in female diabetic mice and its potential pro-apoptotic and anti-proliferative effects with clarification of its inconclusive biological mechanisms...
January 12, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28088561/mutant-dd-genotype-of-nfkb1-gene-is-associated-with-the-susceptibility-and-severity-of-coronary-artery-disease
#17
Jun-Yi Luo, Xiao-Mei Li, Yun Zhou, Qiang Zhao, Bang-Dang Chen, Fen Liu, Xiao-Cui Chen, Hong Zheng, Yi-Tong Ma, Xiao-Ming Gao, Yi-Ning Yang
Nuclear factor κappa B (NF-κB) is an important transcription factor in the development and progression of coronary artery disease (CAD). Recent evidence suggests that -94 ATTG ins/del mutant in the promoter of NFKB1 gene is an essential functional mutant. The present study demonstrated the frequencies of the del/del (DD) genotype and del (D) allele were significantly higher in CAD patients than in controls. CAD patients carrying mutant DD genotype had worse stenosis of diseased coronary arteries compared to those carrying ins/ins (II) or ins/del (ID) genotype...
January 11, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28088493/apoptosis-induced-by-the-methanol-extract-of-salvia-miltiorrhiza-bunge-in-non-small-cell-lung-cancer-through-pten-mediated-inhibition-of-pi3k-akt-pathway
#18
Yin-Tao Ye, Wei Zhong, Pei Sun, Dong Wang, Chen Wang, Li-Min Hu, Jun-Qiang Qian
ETHNOPHARMACOLOGICAL RELEVANCE: Salvia miltiorrhiza Bunge, a well-known traditional Chinese medicinal (TCM) plant, has been used to treat cardiovascular diseases since thousands of years. Many studies have reported that the active component tanshinones displayed a variety of biological activities: antithrombous, antiplatelet aggregation, antioxidant and antitumor promoting. But the mechanism of how the active components working still need to be clarified. The anti-tumor effect of compounds of tanshinone (CTN), the methanol extract of Salvia miltiorrhiza Bunge roots, was investigated...
January 11, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28088348/neuroprotective-effects-of-kukoamine-a-against-cerebral-ischemia-via-antioxidant-and-inactivation-of-apoptosis-pathway
#19
Jia Liu, Xiaowen Jiang, Qiao Zhang, Sen Lin, Jun Zhu, Yajun Zhang, Jiabao Du, Xiaolong Hu, Weihong Meng, Qingchun Zhao
Kukoamine A (KuA) is a bioactive compound, which is known for a hypotensive effect. Recent studies have shown that KuA has anti-oxidative effect and anti-apoptosis stress in vitro. However, its neuroprotective effect in rats with cerebral ischemia is still unclear. In the study, we investigated whether KuA could attenuate cerebral ischemia induced by permanent middle cerebral artery occlusion (pMCAO) in rats. Results revealed that KuA could significantly reduce infarct volume both pre-treatment and post-treatment, and increase corresponding Garcia neurological scores...
January 11, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28087906/-effect-and-its-molecular-mechanisms-of-curcumin-on-pulmonary-artery-smooth-muscle-cells-in-rat-model-with-chronic-obstructive-pulmonary-disease
#20
Xiangang Lin, Yenong Chen, Zhuqing Liu
Objective: To investigate the effects and the underlying molecular mechanisms of curcumin on pulmonary artery smooth muscle cells in rat model with chronic obstructive pulmonary disease (COPD). Methods: A total of 75 male Wistar rats were randomly divided into control group (group CN), model group (group M), low-dose curcumin group (group CL), medium-dose curcumin group (group CM) and high-dose curcumin group (group CH). HE staining was used to observe the morphology of pulmonary artery. Proliferating cell nuclear antigen (PCNA), apoptosis-related protein Bcl-2 and Bax were detected by immunohistochemical staining...
May 25, 2016: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
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