keyword
MENU ▼
Read by QxMD icon Read
search

Pi3k

keyword
https://www.readbyqxmd.com/read/29161771/tetramethylpyrazine-nitrone-activates-akt-creb-through-increasing-bdnf-expression-to-promote-post-ischemic-neuroregeneration-and-recovery-of-neurological-functions-in-rats
#1
Gaoxiao Zhang, Tao Zhang, Ning Li, Liangmiao Wu, Jianbo Gu, Cuimei Li, Chen Zhao, Wei Liu, Luchen Shan, Pei Yu, Xifei Yang, Yaohui Tang, Guo-Yuan Yang, Yuqiang Wang, Yewei Sun, Zaijun Zhang
BACKGROUND AND PURPOSE: Neuronal regeneration from endogenous precursors is an attractive strategy for the treatment of ischemic stroke; however, most stroke-generated new born neurons die over time. Therefore, a drug that is both neuroprotective and pro-neurogenic may be promising. In this study, we assessed the neurogenic and oligodendrogenic effects of tetramethylpyrazine nitrone (TBN), a neuroprotective drug candidate for stroke, in a rat model of ischemic stroke. EXPERIMENTAL APPROACH: Sprague Dawley (SD) rats were subjected to middle cerebral artery occlusion (MCAO)...
November 21, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29160857/synergistic-effects-of-danshen-salvia-miltiorrhizae-radix-et-rhizoma-and-sanqi-notoginseng-radix-et-rhizoma-combination-in-angiogenesis-behavior-in-eahy-926-cells
#2
Xian Zhou, Valentina Razmovski-Naumovski, Antony Kam, Dennis Chang, Chunguang Li, Alan Bensoussan, Kelvin Chan
Background: This study investigated the combination effects of the Danshen and Sanqi herb pair on angiogenesis in vitro. Methods: Nine combination ratios of Danshen-Sanqi extracts (DS-SQ) were screened for their angiogenic effects in the human vascular endothelial EAhy 926 cell line via cell proliferation, cell migration and tube formation activities against the damage to the cells exerted by DL-homocysteine (Hcy) and adenosine (Ado). The type of interaction (synergistic, antagonistic, additive) between Danshen and Sanqi was analyzed using combination index (CI) and isobologram models...
November 21, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/29160133/inhibition-of-metastasis-and-angiogenesis-in-hep-2-cells-by-wheatgrass-extract-an-in-vitro-and-in-silico-approach
#3
Garima Shakya, Sangeetha Balasubramanian, Muddasarul Hoda, Rukkumani Rajagopalan
Metastasis is the major hindrance in the treatment of all cancers, including laryngeal squamous cell carcinoma. Intensive researches are under way to identify the effective natural polyphenols with anti-metastatic ability for cancer treatment. Wheatgrass, an herbal plant has been reported to show anticancer effects. Hence, in this study, we aimed to analyze the anti-metastatic effect of methanol extract of wheatgrass (MEWG). The levels of metastatic marker proteins were determined by western blot. PI3K and AKT levels were determined by real time (RT)-PCR analysis...
November 21, 2017: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/29160061/a-dual-macrophage-targeting-nanovector-for-delivery-of-oligodeoxynucleotides-to-overcome-cancer-associated-immunosuppression
#4
Xiao-Yan He, Bo-Ya Liu, Jin-Long Wu, Shu-Lun Ai, Ren-Xi Zhuo, Si-Xue Cheng
To overcome cancer-associated immunosuppression, we prepared a dual-targeting vector to deliver CpG oligodeoxynucleotides (ODN) to macrophages. The dual-targeting system composed of mannosylated carboxymethyl chitosan (MCMC)/hyaluronan (HA) for macrophage targeting and protamine sulfate (PS) for ODN complexation was prepared by self-assembly. The effects of ODN delivery on immune cells was studied in J774A.1 cells. Due to the enhanced delivery efficiency, the dual-targeting delivery system exhibits a higher immune stimulatory activity compared with the mono-targeting delivery system containing either MCMC or HA, resulting in dramatically enhanced secretion of pro-inflammatory cytokines and a successful shift to activated macrophages (M1)...
November 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29159980/role-of-pi3k-in-myocardial-ischaemic-preconditioning-mapping-pro-survival-cascades-at-the-trigger-phase-and-at-reperfusion
#5
Xavier Rossello, Jaime A Riquelme, Sean M Davidson, Derek M Yellon
The Reperfusion Injury Salvage Kinase (RISK) pathway is considered the main pro-survival kinase cascade mediating the ischaemic preconditioning (IPC) cardioprotective effect. To assess the role of PI3K-Akt, its negative regulator PTEN and other pro-survival proteins such as ERK and STAT3 in the context of IPC, C57BL/6 mouse hearts were retrogradely perfused in a Langendorff system and subjected to 4 cycles of 5 min. ischaemia and 5 min. reperfusion prior to 35 min. of global ischaemia and 120 min. of reperfusion...
November 20, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29159601/activating-fgfr1-mutations-in-sporadic-pheochromocytomas
#6
Jenny Welander, Małgorzata Łysiak, Michael Brauckhoff, Laurent Brunaud, Peter Söderkvist, Oliver Gimm
INTRODUCTION: Pheochromocytomas are neuroendocrine tumors of the adrenal glands. Up to 40% of the cases are caused by germline mutations in one of at least 15 susceptibility genes, making them the human neoplasms with the highest degree of heritability. Recurrent somatic alterations are found in about 50% of the more common sporadic tumors with NF1 being the most common mutated gene (20-25%). In many sporadic tumors, however, a genetic explanation is still lacking. MATERIALS AND METHODS: We investigated the genomic landscape of sporadic pheochromocytomas with whole-exome sequencing of 16 paired tumor and normal DNA samples and extended confirmation analysis in 2 additional cohorts comprising a total of 80 sporadic pheochromocytomas...
November 20, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/29158991/ndufa4l2-is-associated-with-clear-cell-renal-cell-carcinoma-malignancy-and-is-regulated-by-elk1
#7
Lei Wang, Zhiqiang Peng, Kaizhen Wang, Yijun Qi, Ying Yang, Yue Zhang, Xinyuan An, Shudong Luo, Junfang Zheng
Background: Clear cell renal cell carcinoma (ccRCC) is the most common and lethal cancer of the adult kidney. However, its pathogenesis has not been fully understood till now, which hinders the therapeutic development of ccRCC. NADH dehydrogenase (ubiquinone) 1 alpha subcomplex 4-like 2 (NDUFA4L2) was found to be upregulated and play an important role in ccRCC. We aimed to further investigate the underlying mechanisms by which NDUFA4L2 exerted function and its expression level was upregulated...
2017: PeerJ
https://www.readbyqxmd.com/read/29158820/ph-sensitive-nano-complexes-overcome-drug-resistance-and-inhibit-metastasis-of-breast-cancer-by-silencing-akt-expression
#8
Jieying Yin, Tianqun Lang, Dongmei Cun, Zhong Zheng, Yan Huang, Qi Yin, Haijun Yu, Yaping Li
The therapy of breast cancer is encumbered by drug resistance and metastasis, which can be due to a defective PI3K/AKT/mTOR signaling pathway. This study was aimed at improving the anti-cancer effect of the chemotherapeutic agent paclitaxel (PTX) on the drug resistant and metastatic breast cancer by co-delivering PTX and a siRNA, siAkt, directed at silencing the Akt expression. Methods: The pH-sensitive amphiphilic polymer, poly [(1,4-butanediol)-diacrylate-β-N, N-diisopropylethylenediamine]-polyethyleneimine (BDP) was synthesized...
2017: Theranostics
https://www.readbyqxmd.com/read/29158773/construction-of-an-mirna-regulated-pathway-network-reveals-candidate-biomarkers-for-postmenopausal-osteoporosis
#9
Min Shao
We aimed to identify risk pathways for postmenopausal osteoporosis (PMOP) via establishing an microRNAs- (miRNA-) regulated pathway network (MRPN). Firstly, we identified differential pathways through calculating gene- and pathway-level statistics based on the accumulated normal samples using the individual pathway aberrance score (iPAS). Significant pathways based on differentially expressed genes (DEGs) using DAVID were extracted, followed by identifying the common pathways between iPAS and DAVID methods...
2017: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/29158583/patient-derived-ipscs-show-premature-neural-differentiation-and-neuron-type-specific-phenotypes-relevant-to-neurodevelopment
#10
E Yeh, D Q Dao, Z Y Wu, S M Kandalam, F M Camacho, C Tom, W Zhang, R Krencik, K A Rauen, E M Ullian, L A Weiss
Ras/MAPK pathway signaling is a major participant in neurodevelopment, and evidence suggests that BRAF, a key Ras signal mediator, influences human behavior. We studied the role of the mutation BRAF(Q257R), the most common cause of cardiofaciocutaneous syndrome (CFC), in an induced pluripotent stem cell (iPSC)-derived model of human neurodevelopment. In iPSC-derived neuronal cultures from CFC subjects, we observed decreased p-AKT and p-ERK1/2 compared to controls, as well as a depleted neural progenitor pool and rapid neuronal maturation...
November 21, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/29158110/diabetes-mellitus-and-alzheimer-s-disease-gsk-3%C3%AE-as-a-potential-link
#11
REVIEW
Ying Zhang, Nan-Qu Huang, Fei Yan, Hai Jin, Shao-Yu Zhou, Jing-Shan Shi, Feng Jin
It is well known that Alzheimer's disease (AD) is closely related to diabetes mellitus (DM), and AD is also regarded as Type 3 diabetes (T3D). However, the exact link between AD and DM is still unclear. Recently, more and more evidence has shown that glycogen synthase kinase-3β (GSK-3β) may be the potential link between DM and AD. In DM, GSK-3β is the crucial enzyme of glycogen synthesis, which plays a key role in regulating blood glucose. More importantly, GSK-3β is one of the key factors leading to insulin deficiency and insulin resistance, and insulin resistance is an important hallmark of the occurrence and development of DM...
November 17, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/29158051/the-regulation-of-foxo1-and-its-role-in-disease-progression
#12
REVIEW
Ya-Qi Xing, Ang Li, Yang Yang, Xiao-Xia Li, Li-Nan Zhang, Hui-Cai Guo
Cell proliferation, apoptosis, autophagy, oxidative stress and metabolic dysregulation are the basis of many diseases. Forkhead box transcription factor O1 (FOXO1) changes in response to cellular stimulation and maintains tissue homeostasis during the above-mentioned physiological and pathological processes. Substantial evidences indicate that FOXO1's function depends on the modulation of downstream targets such as apoptosis- and autophagy-associated genes, anti-oxidative stress enzymes, cell cycle arrest genes, and metabolic and immune regulators...
November 17, 2017: Life Sciences
https://www.readbyqxmd.com/read/29157986/lncrna-myocardial-infarction-associated-transcript-miat-contributed-to-cardiac-hypertrophy-by-regulating-tlr4-via-mir-93
#13
Yunwei Li, Juan Wang, Lili Sun, Shengnan Zhu
It has been reported that lncRNA myocardial infarction-associated transcript (MIAT) facilitated the pathological development in angiotensin II (AngII)-induced cardiac hypertrophy. Nevertheless, the underlying mechanism of MIAT involved in cardiac hypertrophy is largely unknown. In this study, AngII-treated cardiomyocytes were applied as a cardiac hypertrophy model in vitro. The expressions of MIAT and miR-93 were detected by qRT-PCR. The protein levels of toll-like receptor 4 (TLR4), atrial natriuretic factor (ANF), beta-myosin heavy chain (β-MHC), phosphoinositide-3 kinase (PI3K), protein kinase B (Akt), phosphorylated Akt (p-Akt), mammalian target of rapamycin (mTOR), and phosphorylated mTOR (p-mTOR) were determined by western blot...
November 17, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29157832/pachymic-acid-promotes-induction-of-autophagy-related-to-igf-1-signaling-pathway-in-wi-38-cells
#14
Su-Gyeong Lee, Moon-Moo Kim
BACKGROUND: The insulin-like growth factor 1 (IGF-1) signaling pathway has spotlighted as a mechanism to elucidate aging associated with autophagy in recent years. Therefore, we have tried to screen an effective compound capable of inducing autophagy to delay aging process. PURPOSE: The aim of this study is to investigate whether pachymic acid, a main compound in Poria cocos, induces autophagy in the aged cells. METHODS: The aging of young cells was induced by treatment with IGF-1 at 50 ng/ml three times every two days...
December 1, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29157825/1-6-di-o-caffeoyl-%C3%AE-d-glucopyranoside-a-natural-compound-from-callicarpa-nudiflora-hook-impairs-p2y12-and-thromboxane-a2-receptor-mediated-amplification-of-platelet-activation-and-aggregation
#15
Jianjiang Fu, Xiaocui Zhu, Wei Wang, Hong Lu, Zhoumiao Zhang, Ting Liu, Huanjun Xu, Huizheng Fu, Shuangcheng Ma, Yuehua Luo
BACKGROUND: Platelet activation and subsequent accumulation at sites of vascular injury perform a central role in thrombus formation, which is believed to be the trigger of several cardiovascular diseases, such as atherosclerosis, myocardial infarction and strokes. In this sense, the search for agents that are capable of blocking platelets aggregation has important implications for these diseases. Callicarpa nudiflora (C. nudiflora) Hook is a traditional Chinese medicine herb for eliminating stasis to subdue swelling and hemostasis...
December 1, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29156828/the-%C3%AE-glucan-from-lentinus-edodes-suppresses-cell-proliferation-and-promotes-apoptosis-in-estrogen-receptor-positive-breast-cancers
#16
Hui Xu, Siwei Zou, Xiaojuan Xu
Breast cancer is now the most common cancer in worldwide women, and novel interventions are needed to overcome the resistance occurring in the estrogen-targeted endocrine therapy. Herein, we demonstrate that the β-glucan from Lentinus edodes (LNT) exhibited a profound inhibition ratio of ∼53% against estrogen receptor positive (ER+) MCF-7 tumor growth in nude mice similar to the positive control of cisplatin. Immunohistochemistry images showed that LNT evidently suppressed cell proliferation and promoted apoptosis in MCF-7 tumor tissues...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156798/arhi-is-a-novel-epigenetic-silenced-tumor-suppressor-in-sporadic-pheochromocytoma
#17
Dong Wang, Li Song, Liang Wang, Lianmei Zhao, Bai Xiang, Ying Li, Baoen Shan, Jing Liu
Pheochromocytoma (PCC) is related to germline mutations in 12 susceptibility genes. Although comparative genomic hybridization array has revealed some putative tumor suppressor genes on the short arm of chromosome 1 that are likely to be involved in PCC tumorigenesis, the molecules involved, except for those encoded by known susceptibility genes, have not been found in the generation of sporadic tumors. In the present work, we first identified that the unmethylated allele of Aplasia Ras homolog member I (ARHI) was deleted in most PCC tumors which retained a hypermethylated copy, while its mRNA level was significantly correlated with the unmethylated copy...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156767/enhancing-conventional-chemotherapy-drug-cisplatin-induced-anti-tumor-effects-on-human-gastric-cancer-cells-both-in-vitro-and-in-vivo-by-thymoquinone-targeting-pten-gene
#18
Jingjing Ma, Xue Hu, Jiao Li, Dandan Wu, Qingzhi Lan, Qian Wang, Shan Tian, Weiguo Dong
Combination chemotherapy regimen with several anti-tumor drugs is a strategy to improve outcome. Thymoquinone (TQ) has been reported to exert biological activity on various types of human cancers without obvious toxicity. However, only few studies showed the anti-tumor effects of TQ combination with cisplatin on gastric cancer (GC). Here, we showed pretreatment with 5μM TQ significantly increased the apoptotic effects induced by cisplatin on GC cell lines. Combined treatment of cisplatin with TQ represented a significantly superior tumor suppression effect than either agent alone in a xenograft tumor mouse model...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156728/long-non-coding-rna-hotair-acts-as-a-competing-endogenous-rna-to-promote-malignant-melanoma-progression-by-sponging-mir-152-3p
#19
Wenkang Luan, Rubo Li, Liang Liu, Xin Ni, Yan Shi, Yun Xia, Jinlong Wang, Feng Lu, Bin Xu
HOX transcript antisense RNA (HOTAIR) is associated with the growth and metastasis of many human tumors, but its biological roles in malignant melanoma remain unclear. In this study, we show that HOTAIR is overexpressed in melanoma tissues and cells, especially in metastatic melanoma. High HOTAIR levels correlate with poor prognosis in melanoma patients. We also determined that HOTAIR functions as a competing endogenous RNA (ceRNA) for miR-152-3p. miR-152-3p was decreased and acted as a tumor suppressor in melanoma, and c-MET was the functional target of miR-152-3p...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156717/oligomer-procyanidins-f2-repress-hif-1%C3%AE-expression-in-human-u87-glioma-cells-by-inhibiting-the-egfr-akt-mtor-and-mapk-erk1-2-signaling-pathways-in-vitro-and-in-vivo
#20
Hong-Li Zheng, Li-Hui Wang, Bao-Shan Sun, Yi Li, Jing-Yu Yang, Chun-Fu Wu
Hypoxia-inducible factor-1 (HIF-1) is over-expressed in gliomas and has become one of the most compelling tumor targets. In this study, we found that oligomer procyanidins (F2) can suppress the expressions of HIF-1α and its target genes in U87 cells, and also down-regulate the EGFR/PI3K/AKT/mTOR and MAPK/ERK1/2 pathways in vitro and in vivo. Furthermore, hypoxia-induced formation of tubular structures by human umbilical vascular endothelial cells and the migration and invasion of U87 cells could be inhibited by F2 in a HIF-1 dependent manner...
October 17, 2017: Oncotarget
keyword
keyword
3221
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"