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https://www.readbyqxmd.com/read/28228355/altered-lipid-metabolism-in-rat-offspring-of-dams-fed-a-low-protein-diet-containing-soy-protein-isolate
#1
Mi Yoon, Sae Bom Won, Young Hye Kwon
AIMS: Substantial studies have reported that maternal protein restriction may induce later development of cardiovascular disease in offspring by impairing antioxidant system and lipid metabolism. Because a unique amino acid composition of soy protein isolate has shown to provide health benefits, including hypolipidemic effects, we investigated effects of maternal low-protein diet composed of low-isoflavone soy protein isolate (SPI) on oxidative stress and lipid metabolism in offspring...
February 20, 2017: Life Sciences
https://www.readbyqxmd.com/read/28214594/association-between-light-at-night-melatonin-secretion-sleep-deprivation-and-the-internal-clock-health-impacts-and-mechanisms-of-circadian-disruption
#2
REVIEW
Yvan Touitou, Alain Reinberg, David Touitou
Exposure to Artificial Light At Night (ALAN) results in a disruption of the circadian system, which is deleterious to health. In industrialized countries, 75% of the total workforce is estimated to have been involved in shift work and night work. Epidemiologic studies, mainly of nurses, have revealed an association between sustained night work and a 50-100% higher incidence of breast cancer.The potential and multifactorial mechanisms of the effects include the suppression of melatonin secretion by ALAN, sleep deprivation, and circadian disruption...
February 15, 2017: Life Sciences
https://www.readbyqxmd.com/read/28212826/pharmacological-postconditioning-with-sevoflurane-activates-pi3k-akt-signaling-and-attenuates-cardiopulmonary-bypass-induced-lung-injury-in-dog
#3
Yu Zhang, Dongdong Li, Junli Luo, Song Chen, Xuejiao Dou, Ming Han, Hong Zhang
AIMS: Sevoflurane, a widely used inhaled anesthetic, showed valid protective effect against ischemia reperfusion injury in lung, however, the underlying molecular mechanisms has yet to be explained. MATERIALS AND METHODS: Dogs were divided into four groups: control group, cardiopulmonary bypass (CPB) group, sevoflurane postconditioning group and wortmannin group. Arterial blood was obtained from each group to test the respiratory index and oxygenation index and pulmonary tissues were sampled for apoptotic TUNEL stain...
February 14, 2017: Life Sciences
https://www.readbyqxmd.com/read/28212825/inhibition-of-ubiquitin-proteasome-function-prevents-monocrotaline-induced-pulmonary-arterial-remodeling
#4
Yanting Zhu, Yinxia Wu, Wenhua Shi, Jian Wang, Xin Yan, Qingting Wang, Ya Liu, Lan Yang, Li Gao, Manxiang Li
AIMS: Previous study has indicated that inhibition of proteasome function ameliorates the development of pulmonary arterial hypertension (PAH), while its underlying mechanisms are still unclear. This study was performed to address these issues. MATERIAL AND METHODS: Male Sprague-Dawley (SD) rats were divided into five groups: control group, PAH group, vehicle treated PAH group, MG-132 treated PAH group and bortezomib treated PAH group. PAH model was established by a single intraperitoneal injection of monocrotaline (MCT)...
February 14, 2017: Life Sciences
https://www.readbyqxmd.com/read/28202289/rolipram-potentiates-bevacizumab-induced-cell-death-in-human-glioblastoma-stem-like-cells
#5
Sara Ramezani, Nasim Vousooghi, Fatemeh Ramezani Kapourchali, Mahmoudreza Hadjighasem, Parisa Hayat, Naser Amini, Mohammad Taghi Joghataei
AIMS: Glioblastoma cancer stem-like cells (GCSCs) promote themselves proliferation by secreting the vascular endothelial growth factor A (VEGFA) in an autocrine manner, positively regulated by phosphodiesterase IV (PDE4). In the current study, we investigated the putative cytotoxic effect of bevacizumab, a VEGFA blocker, alone and in combination with a specific inhibitor of PDE4 called rolipram on GCSCs isolated from human surgical tumor specimen with a focus on PI3K/AKT pathway. MAIN METHODS: CD133+/CD15+ GCSCs were characterized by flow cytometry and expanded in a serum-free primary culture system...
February 12, 2017: Life Sciences
https://www.readbyqxmd.com/read/28188730/involvement-of-histone-methylation-in-macrophage-apoptosis-and-unstable-plaque-formation-in-methionine-induced-hyperhomocysteinemic-apoe-mice
#6
Guangzhi Cong, Ru Yan, Hui Huang, Kai Wang, Ning Yan, Ping Jin, Na Zhang, Jianjun Hou, Dapeng Chen, Shaobin Jia
AIMS: Hyperhomocysteinemia (Hhcy) is an independent risk factor of atherosclerosis and promotes unstable plaque formation. Epigenetic mechanisms play an important role in the pathogenesis of atherosclerosis induced by Hhcy. However, the exact mechanism is still undefined. Lesional apoptotic cells and necrotic core formation contribute greatly to the progression of plaque. The present study sought to determine whether modification of histone methylation is involved in macrophage apoptosis and unstable plaque formation in the condition of Hhcy...
February 7, 2017: Life Sciences
https://www.readbyqxmd.com/read/28188729/experimental-mammary-carcinogenesis-rat-models
#7
REVIEW
Antonieta Alvarado, Ana I Faustino-Rocha, Bruno Colaço, Paula A Oliveira
Mammary cancer is one of the most common cancers, victimizing more than half a million of women worldwide every year. Despite all the studies in this field, the current therapeutic approaches are not effective and have several devastating effects for patients. In this way, the need to better understand the mammary cancer biopathology and find effective therapies led to the development of several rodent models over years. With this review, the authors intended to provide the readers with an overview of the rat models used to study mammary carcinogenesis, with a special emphasis on chemically-induced models...
February 7, 2017: Life Sciences
https://www.readbyqxmd.com/read/28185819/expression-of-polysialic-acid-in-primary-laryngeal-squamous-cell-carcinoma
#8
Marko Klobučar, Sarah Visentin, Antonija Jakovčević, Mario Bilić, Lana Kovač-Bilić, Davorin Đanić, Krešimir Pavelić, Sandra Kraljević Pavelić
AIMS: Expression of polySia is associated with metastatic dissemination and progression of various malignant diseases. In particular, it may contribute to tumorigenesis by a negative modulatory effect on cellular signaling cascades responsible for cellular migration, differentiation and proliferation. In this study, we investigated the expression of polySia in primary metastatic and non-metastatic laryngeal squamous cell carcinoma (LSCC) tumor tissues and its potential impact on the LSCC progression...
February 6, 2017: Life Sciences
https://www.readbyqxmd.com/read/28174122/role-of-salt-inducible-kinase-1-in-high-glucose-induced-lipid-accumulation-in-hepg2-cells-and-metformin-intervention
#9
Yue Zhang, Hiroshi Takemori, Chang Wang, JiaHui Fu, MingWang Xu, Liang Xiong, NingXu Li, XiuYing Wen
AIMS: To investigate the roles of salt inducible kinase (SIK1) in high glucose-induced triglyceride accumulation in human hepatoma HepG2 cells as well as in the molecular mechanism by which metformin, a drug to treat diabetes, suppresses high glucose-induced lipogenesis. MAIN METHODS: A cell model for high glucose-induced hepatic steatosis was prepared by exposing HepG2 cells to high glucose (25mmol) in the absence or presence of metformin (0.5mmol). Intracellular triglycerides were visualized by Oil Red O and measured using a triglyceride assay kit...
February 5, 2017: Life Sciences
https://www.readbyqxmd.com/read/28161159/early-treatment-with-losartan-effectively-ameliorates-hypertension-and-improves-vascular-remodeling-and-function-in-a-prehypertensive-rat-model
#10
De-Hua He, Jin-Xiu Lin, Liang-Min Zhang, Chang-Sheng Xu, Qiang Xie
AIMS: Pharmacological treatment of prehypertension may ameliorate hypertension and improve vascular structure and function. This study investigated 1) whether early treatment with either losartan or amlodipine at the onset of prehypertension can prevent hypertension and 2) whether losartan and amlodipine equally improve vascular remodeling and function in a rat model of hypertension. MATERIALS AND METHODS: Stroke-prone spontaneously hypertensive (SHRSP) rats were administered losartan, amlodipine or saline for 6 or 16weeks at the onset of prehypertension...
February 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/28161158/fingolimod-fty720-attenuates-social-deficits-learning-and-memory-impairments-neuronal-loss-and-neuroinflammation-in-the-rat-model-of-autism
#11
Hongmei Wu, Xuelai Wang, Jingquan Gao, Shuang Liang, Yanqiu Hao, Caihong Sun, Wei Xia, Yonggang Cao, Lijie Wu
AIMS: To investigate the effect of FTY720 on the valproic acid (VPA) rat model of autism. MAIN METHODS: As an animal model of autism, we used intraperitoneal injection of VPA on embryonic day 12.5 in Wistar rats. The pups were given FTY720 orally at doses of 0.25, 0.5 and 1mg/kg daily from postnatal day 15 to 35. Social behavior, spatial learning and memory were assessed at the end of FTY720 treatment. The histological change, oxidative stress, neuroinflammatory responses, and apoptosis-related proteins in the hippocampus were evaluated...
February 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/28153746/dextromethorphan-upregulates-osteoblast-and-osteoclast-activity-but-does-not-attenuate-ovariectomy-induced-osteoporosis
#12
Jia-Lin Wu, Wei-Yuan Tsai, Jian-Horng Chen, Chih-Shung Wong
AIMS: Study on the in vivo regulatory role of glutamate in osteoblast (OB) and osteoclast (OC) differentiation is less advanced. The present study investigated the effect of dextromethorphan (DXM), an N-methyl-d-aspartate receptors (NMDARs) antagonist, on osteoporosis development. MAIN METHODS: In order to examine the role of glutamate in bone metabolism, ovariectomized (Ovx) female Wistar rats were injected three times per week for 8weeks with either saline, or 15μg/kg of β-estrodiol, or DXM (40mg/kg) intraperitoneally...
January 30, 2017: Life Sciences
https://www.readbyqxmd.com/read/28131762/selective-sensitiveness-of-mesenchymal-stem-cells-to-shock-waves-leads-to-anticancer-effect-in-human-cancer-cell-co-cultures
#13
Federica Foglietta, Serena Duchi, Roberto Canaparo, Greta Varchi, Enrico Lucarelli, Barbara Dozza, Loredana Serpe
AIM: Mesenchymal stem cells (MSC) possess the distinctive feature of homing in on and engrafting into the tumor stroma making their therapeutic applications in cancer treatment very promising. Research into new effectors and external stimuli, which can selectively trigger the release of cytotoxic species from MSC toward the cancer cells, significantly raises their potential. MAIN METHODS: Shock waves (SW) have recently gained recognition for their ability to induce specific biological effects, such as the local generation of cytotoxic reactive oxygen species (ROS) in a non-invasive and tunable manner...
January 25, 2017: Life Sciences
https://www.readbyqxmd.com/read/28131761/sirt3-mediates-decrease-of-oxidative-damage-and-prevention-of-ageing-in-porcine-fetal-fibroblasts
#14
Xiaoxian Xie, Liangliang Wang, Binggong Zhao, Yangyang Chen, Jiaqi Li
AIMS: Sirtuin 3 (SIRT3) is a mitochondria-specific protein required for the deacetylation of metabolic enzymes and the action of oxidative phosphorylation by acting as a nicotinamide adenine dinucleotide (NAD(+))-dependent deacetylase. SIRT3 increases oxidative stress resistance and prevents mitochondrial decay associated with ageing in response to caloric restriction. However, the effects of SIRT3 on oxidative damage and ageing are not well understood. We investigated the physiological functions of porcine SIRT3 on the damage and ageing in porcine fetal fibroblasts (PFFs)...
January 25, 2017: Life Sciences
https://www.readbyqxmd.com/read/28131760/effect-of-geraniol-on-rat-cardiomyocytes-and-its-potential-use-as-a-cardioprotective-natural-compound
#15
R Crespo, K Wei, B Rodenak-Kladniew, M Mercola, P Ruiz-Lozano, C Hurtado
AIMS: Reactive oxygen species (ROS) are generated in the ischaemic myocardium especially during early reperfusion and affect myocardial function and viability. Monoterpenes have been proposed to play beneficial roles in diverse physiological systems; however, the mechanisms of action remain largely unknown. This study aims to assess the effect of monoterpene geraniol (GOH) on neonatal rat ventricular cardiomyocytes (NRVCs) subjected to oxidative stress. MAIN METHODS: We used an in vitro model of hypoxia-reoxygenation...
January 25, 2017: Life Sciences
https://www.readbyqxmd.com/read/28104366/effects-of-acute-and-chronic-quercetin-administration-on-methylphenidate-induced-hyperlocomotion-and-oxidative-stress
#16
Luiz K S Kanazawa, Débora D Vecchia, Etiéli M Wendler, Palloma de A S Hocayen, Paulo S Berão, Manuela L de Mélo, Francislaine A Dos Reis Lívero, Claudia Rita Corso, Maria Carolina Stipp, Alexandra Acco, Roberto Andreatini
AIMS: Increases in protein kinase C (PKC) and oxidative stress have been related to mania. Drugs with antioxidant effects or inhibitory actions on PKC may have antimanic effects. The flavonoid quercetin has antioxidant and PKC-inhibiting effects that resemble those of lithium, the first-line treatment for mania in bipolar disorder. We hypothesized that quercetin may have antimanic-like effects in an animal model. MAIN METHODS: In the present study, we investigated the effects of acute and chronic treatment with quercetin (2...
January 16, 2017: Life Sciences
https://www.readbyqxmd.com/read/28088452/treatment-of-rheumatoid-arthritis-with-combination-of-methotrexate-and-tripterygium-wilfordii-a-meta-analysis
#17
Xiaoyu Wang, Yunyun Zu, Lin Huang, Jie Yu, Huawei Zhao, Chengping Wen, Zhong Chen, Zhenghao Xu
AIMS: Extracts of Tripterygium wilfordii Hook F (TwHF), a traditional Chinese herbal medicine, have been widely used for treating rheumatoid arthritis (RA) in combination with methotrexate (MTX) in China for several decades. However, the efficacy and safety of MTX plus TwHF treatment remain unclear. MAIN METHODS: A comprehensive search of databases in both Chinese and English was performed. Data from the selected studies were extracted and analyzed independently by two authors...
January 11, 2017: Life Sciences
https://www.readbyqxmd.com/read/28087373/chronoinflammaging-in-alzheimer-a-systematic-review-on-the-roles-of-toll-like-receptor-2
#18
REVIEW
Ali Ravari, Tayebeh Mirzaei, Derek Kennedy, Mohammad Kazemi Arababadi
Aging is associated with a range of chronic low-grade inflammation (Chronoinflammaging) which may play a significant role in some chronic inflammatory based diseases, such as Alzheimer disease (AD). However, the events which lead to the induction of chronoinflammaging in AD are yet to be clarified. It has been proposed that the recognition of endogenous ligands by pathogen recognition receptors (PRRs) may be involved in the induction of chronoinflammaging. Toll like receptors (TLRs) are a family of PRRs which recognize endogenous damage associated molecular patterns (DAMPs) and subsequently induce inflammation...
January 10, 2017: Life Sciences
https://www.readbyqxmd.com/read/28082020/mir424-5p-functions-as-an-anti-oncogene-in-cervical-cancer-cell-growth-by-targeting-kdm5b-via-the-notch-signaling-pathway
#19
Yan Zhou, Qi An, Rui-Xia Guo, Yu-Huan Qiao, Liu-Xia Li, Xiao-Yan Zhang, Xian-Lan Zhao
AIMS: Aberrant expression of miRNAs exert the critical roles in carcinogenesis, including cervical cancer. Recent study corroborated the down-regulation of miR424-5p in uterine cervix adenocarcinoma. This research aimed to investigate the function and underlying mechanisms of miR424-5p in cervical cancer cell growth. MAIN METHODS: Tissues samples were collected from patients with cervical cancer and healthy control. The expression levels of miR424-5p were determined by qRT-PCR...
January 9, 2017: Life Sciences
https://www.readbyqxmd.com/read/28082019/mediatory-role-of-nmda-ampa-kainate-gabaa-and-alpha2-receptors-in-topiramate-neuroprotective-effects-against-methylphenidate-induced-neurotoxicity-in-rat
#20
Majid Motaghinejad, Manijeh Motevalian, Sulai Fatima
Prolonged abuse of methylphenidate (MPH) often causes neuronal damage. Topiramate (TPM) has neuroprotective properties, but its mechanism of action remains unclear.The current study evaluates in vivo role of various doses of TPM (10, 30, 50, 70 and 100mg/kg) and its possible mechanisms against MPH-induced hippocampal oxidative stress, inflammation and apoptosis, in absence and presence of different receptor agonists and antagonists. Domoic acid (DOM) as AMPA/kainate receptor agonist, bicuculline (BIC) as GABAA receptor antagonist, ketamine (KET) as NMDA receptor antagonist, yohimbine (YOH) as ɑ2 adrenergic receptor antagonist and haloperidole (HAL) as D2 dopamine receptor antagonist was used...
January 9, 2017: Life Sciences
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