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https://www.readbyqxmd.com/read/28322865/palmitic-acid-elicits-hepatic-stellate-cell-activation-through-inflammasomes-and-hedgehog-signaling
#1
Na-Na Duan, Xue-Jing Liu, Jian Wu
AIMS: Activation of hepatic stellate cells (HSCs) plays a pivotal role at the center of the fibrogenic progression in nonalcoholic steatohepatitis (NASH). However, it is poorly understood that how various molecules interact within HSCs during the progression of NASH to fibrosis. The aim of the present study is to delineate how inflammasome molecules, hedgehog signaling and autophagy provoke HSC activation using palmitic acid (PA) as a major insult. MAIN METHODS: Inflammasome activation, hedgehog signaling activity and autophagy in PA-exposed HSCs were determined to investigate their role in activation of human and rodent HSC lines or primary HSCs...
March 17, 2017: Life Sciences
https://www.readbyqxmd.com/read/28315691/mir-519-suppresses-nasopharyngeal-carcinoma-cell-proliferation-by-targeting-oncogene-urg4-urgcp
#2
Guodong Yu, Tian Zhang, Ying Jing, Qingmin Bao, Qiang Tang, Yu Zhang
Nasopharyngeal carcinoma (NPC) is one of the most common malignant tumor in Southeast Asia, its regulatory mechanism is still to be understood. miR-519 inhibits the progression of several tumors, including cervical cancer, ovarian cancer and gastric cancer. But its role in NPC hasn't been studied. In present study, we found miR-519 was downregulated in NPC cells, its overexpression inhibited NPC cell proliferation and arrested cell cycle at G0/G1 phase, while its knockdown promoted NPC cell proliferation and cell cycle progression...
March 15, 2017: Life Sciences
https://www.readbyqxmd.com/read/28315350/irisin-acts-as-a-regulator-of-macrophages-host-defense
#3
Agnieszka Irena Mazur-Bialy
AIM: Irisin, the adipomyokine, released mainly by exercised muscles, participate in the browning of adipose tissue and contribute to the restriction of insulin resistance and diabetes mellitus 2 development. Because of the limited reports describing the effect of irisin on inflammation and immunocompetent cells activation, the present study attempted to assess the influence of various irisin concentrations on basic macrophage activity. MAIN METHODS: Studies were carried out on murine RAW 264...
March 14, 2017: Life Sciences
https://www.readbyqxmd.com/read/28302562/dysregulated-expression-of-microrna-150-in-human-papillomavirus-induced-lesions-of-k14-hpv16-transgenic-mice
#4
Joana M O Santos, Mara Fernandes, Rita Araújo, Hugo Sousa, Joana Ribeiro, Margarida M S M Bastos, Paula A Oliveira, Diogo Carmo, Fátima Casaca, Sandra Silva, Ana L Teixeira, Rui M Gil da Costa, Rui Medeiros
AIMS: High-risk human papillomavirus (HPV) infection is one of the major causes of infection-related cancers worldwide. MicroRNAs (miRNAs) are a family of non-coding RNAs (ncRNAs), whose dysregulated levels may cause an aberrant expression of genes involved in oncogenic pathways and consequently lead to cancer development. This is the case of the miRNA-150 (miR-150), whose expression in HPV-induced lesions remains unclear and the present work aims to clarify it. We employed K14-HPV16 mice, which express the early genes of HPV16 in basal keratinocytes, leading to the development of hyperplastic and dysplastic skin lesions and squamous cell carcinomas, and are a representative model of HPV-induced cancers...
March 13, 2017: Life Sciences
https://www.readbyqxmd.com/read/28302561/ameliorative-effect-of-gossypin-against-gentamicin-induced-nephrotoxicity-in-rats
#5
Mohamed Katary, Ahmad Salahuddin
AIM: Gentamicin (GEN) is an aminoglycoside antibiotic employed in treatment of life-threatening gram-negative infections, but one of its major side effects is the induction of nephrotoxicity. Therefore, the aim of this work was to scrutinize the possible protective effect of gossypin against GEN-induced nephrotoxicity. METHOD: Rats were randomly divided into four groups. First group served as a control, second group was injected with gossypin (10mg/kg, orally) for 7days, third group was injected with GEN (80mg/kg, i...
March 13, 2017: Life Sciences
https://www.readbyqxmd.com/read/28300594/cadmium-induced-testicular-damage-is-associated-with-mineral-imbalance-increased-antioxidant-enzymes-activity-and-protein-oxidation-in-rats
#6
Marli C Cupertino, Rômulo D Novaes, Eliziária C Santos, Daniel Santos Sena Bastos, Daiane Cristina Marques Dos Santos, Maria do Carmo Queiroz Fialho, Sérgio L P Matta
No abstract text is available yet for this article.
March 11, 2017: Life Sciences
https://www.readbyqxmd.com/read/28288780/neuroprotective-effects-of-gabaergic-phenols-correlated-with-their-pharmacological-and-antioxidant-properties
#7
Leticia Delgado-Marín, Mariela Sánchez-Borzone, Daniel A García
AIMS: Various investigations have demonstrated the protective capacity of general anesthetics as neuroprotective agents. The effects of propofol against ischemia are known to reside in its antioxidant properties and its GABAergic activity. Other aromatic alcohols have also been reported as able to protect neurons against oxidative damage. The aim of this work is to evaluate the potential neuroprotective effect of some phenols, structurally analogues of propofol, with proven GABAergic activity...
March 10, 2017: Life Sciences
https://www.readbyqxmd.com/read/28286226/microrna-297-promotes-cardiomyocyte-hypertrophy-via-targeting-sigma-1-receptor
#8
Qinxue Bao, Mingyue Zhao, Li Chen, Yu Wang, Siyuan Wu, Wenchao Wu, Xiaojing Liu
AIMS: Sigma-1 receptor (Sig-1R) is a ligand-regulated endoplasmic reticulum (ER) chaperone involved in cardiac hypertrophy, but it is not known whether Sig-1R is regulated by microRNAs (miRNAs). According to bioinformatic analysis, miR-297 was suggested as a potential target miRNA for Sig-1R. Therefore, we verified whether miR-297 could target Sig-1R and investigated the possible mechanisms underlying the role of miR-297 in cardiac hypertrophy. MAIN METHODS: Bioinformatic analysis combined with laboratory experiments, including quantitative RT-PCR, Western blotting, and luciferase assay, were performed to identify the target miRNA of Sig-1R...
March 10, 2017: Life Sciences
https://www.readbyqxmd.com/read/28286225/immunological-alteration-toxic-molecular-inductions-leading-to-cognitive-impairment-neurotoxicity-in-transgenic-mouse-model-of-alzheimer-s-disease
#9
Manuj Ahuja, Manal Buabeid, Engy Abdel-Rehman, Mohammed Majrashi, Kodeeswaran Parameshwaran, Rajesh Amin, Sindhu Ramesh, Kariharan Thiruchelvan, Satyanarayana Pondugula, Vishnu Suppiramaniam, Muralikrishnan Dhanasekaran
AIMS: Inflammation is considered to be one of the crucial pathological factors associated with the development of Alzheimer's disease, although supportive experimental evidence remains undiscovered. Therefore, the current study was carried out to better understand and establish the pathophysiological involvement of chronic inflammation in a double transgenic mouse model of Alzheimer's disease. MAIN METHODS: We analyzed amyloid-beta deposition, oxidative stress, biochemical, neurochemical and immunological markers in a 10month old (APΔE9) mouse model...
March 9, 2017: Life Sciences
https://www.readbyqxmd.com/read/28279665/multiple-sevoflurane-anesthesia-in-pregnant-mice-inhibits-neurogenesis-of-fetal-hippocampus-via-repressing-transcription-factor-pax6
#10
Fang Fang, Ruixue Song, Xiaomim Ling, Mengyuan Peng, Zhanggang Xue, Jing Cang
Sevoflurane is widely used in non-obstetric surgeries of pregnant women, but its influences on fetal brain are still not fully known. We set out to assess the effects of multiple maternal sevoflurane exposure on neurogenesis and cognitive dysfunction in fetus and offspring. Pregnant mice (gestational day 15.5) and cultured mouse neural stem cells (NSCs) received daily sevoflurane exposure (2.5%×2h and 4.1%×2h respectively) for three consecutive days. Cognitive function of the offspring was determined with the Morris water maze...
March 6, 2017: Life Sciences
https://www.readbyqxmd.com/read/28263804/%C3%AE-carotene-suppresses-osteoclastogenesis-and-bone-resorption-by-suppressing-nf-%C3%AE%C2%BAb-signaling-pathway
#11
Feng Wang, Nan Wang, Youshui Gao, Zubin Zhou, Wei Liu, Chenhao Pan, Peipei Yin, Xiaowei Yu, Mingjie Tang
AIMS: β-Carotene is a natural anti-oxidant, which has been used for treatment of cancer and cardiovascular diseases. Recently, the ameliorating function of β-carotene in osteoporosis has been implicated. However, the precise mechanism of β-carotene in prevention and treatment of osteoporosis is largely unknown. In the present study, we aimed to elucidate how β-carotene affects osteoclast formation and bone resorption. MAIN METHODS: Bone marrow-derived monocytes/-macrophages (BMM) were exposed to 0...
March 3, 2017: Life Sciences
https://www.readbyqxmd.com/read/28263805/effects-of-insulin-on-wound-healing-a-review-of-animal-and-human-evidences
#12
REVIEW
Ahmad Oryan, Esmat Alemzadeh
AIMS: Several studies have indicated that insulin that is used in reducing blood glucose is also affective on wound healing by various mechanisms. To understand the outcomes of insulin therapy on wound healing, a meta-analysis and systematic review was performed. MAIN METHODS: The Cochrane library, PubMed, and Science Direct were searched for the literature published from January the 1st 1990 to September the 30th 2016. Twelve animals and nine clinical studies were included...
March 2, 2017: Life Sciences
https://www.readbyqxmd.com/read/28263803/prostaglandin-e2-regulates-renal-function-in-c57-bl6-mouse-with-5-6-nephrectomy
#13
J Jin, Q Tang, Z Li, Z Zhao, Z Zhang, L Lu, T Zhu, P M Vanhoutte, S W Leung, R Tu, Y Shi
AIMS: To investigate the roles of cyclooxygenases (COX) and their metabolites in C57/BL6 mice with 5/6 nephrectomy, an animal model of chronic renal failure. MAIN METHODS: C57/BL6 mice were grouped into sham-operated (2K), one kidney removal (1K) and 5/6 nephrectomy groups (5/6Nx). Renal resistive index was measured by ultrasonography. Blood, aortae, renal arteries and renal cortex were collected for measurement of kidney function, assessment of vascular responsiveness, Western blotting, immuohistochemistry and enzyme-linked immunosorbent assays...
March 2, 2017: Life Sciences
https://www.readbyqxmd.com/read/28259654/lox-1-promotes-right-ventricular-hypertrophy-in-hypoxia-exposed-rats
#14
Tian-Tian Zhu, Wei-Fang Zhang, Ping Luo, Zhao-Xin Qian, Feng Li, Zheng Zhang, Chang-Ping Hu
AIM: Chronic hypoxia leads to right ventricular hypertrophy (RVH). RVH is believed to result from hypoxia-induced pulmonary hypertension. However, if hypoxia impacts RVH directly awaits clarification. Hypoxia triggers oxidative stress, and lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1) mediates reactive oxygen species (ROS) generation in different cells. Therefore, this study aims to explore whether LOX-1-mediated oxidative stress accounts for hypoxia-induced RVH. MAIN METHODS: Rats developed RVH after 3weeks of hypoxia (10% O2)...
March 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/28259653/deciphering-molecular-properties-and-docking-studies-of-hepatitis-c-and-non-hepatitis-c-antiviral-inhibitors-a-computational-approach
#15
Arthi Venkatesan, J Febin Prabhu Dass
BACKGROUND: Hepatitis C is an infectious liver disease with high mortality rate which is caused by Hepatitis C virus. Several treatment methods have been applied to combat this deadly virus including interferons, vaccine and direct acting antivirals (DAAs). However, the later shows promising effects in HCV treatment with lower adverse effect. Specifically, the DAAs target the non-structural proteins (NS3 and NS5B). PURPOSE: The objective of the present study is to hypothesize an alternative antiviral inhibitor for HCV from the available other antivirals...
March 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/28259652/effect-of-orally-ingested-diosgenin-into-diet-on-skin-collagen-content-in-a-low-collagen-skin-mouse-model-and-its-mechanism-of-action
#16
Akinori Haratake, Daisuke Watase, Shuichi Setoguchi, Nami Nagata-Akaho, Kazuhisa Matsunaga, Jiro Takata
AIMS: Influence on collagen content with oral ingestion of diosgenin (Dios) was investigated in established low collagen skin mouse model. And its mechanism of action was investigated using primary cultured fibroblasts. MAIN METHODS: Hairless mice were fed a low protein diet with Dios for 8weeks and the contents of collagen in skin were determined by measuring the content of hydroxyproline (Hyp). In primary cultured fibroblasts, the numbers of fibroblast were determined by incubating with Dios for 120h; the contents of Hyp were determined by incubating with Dios for 24 or 72h using fibroblasts of confluent state; the expressions of messenger ribonucleic acid (mRNA) were determined by incubating with Dios for 24h...
March 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/28254387/colectomy-induces-an-aldosterone-mediated-increase-in-jejunal-glucose-uptake-in-rats
#17
Maha Khachab, Amjad Kanaan, Dania Awad, Elie Deeba, Samira Osman, Camille F Nassar
AIMS: The main function of the colon is water and electrolyte absorption. Total colectomy eliminates this colonic function and may alter the absorptive capacity of the small intestine for nutrients. This study examines the effect of total colectomy on jejunal glucose absorption and investigates the potential role of aldosterone in mediating the alterations in glucose uptake post-colectomy using the aldosterone antagonist spironolactone. MAIN METHODS: Total colectomy with ileo-rectal anastomosis was performed on anesthetized rats...
February 27, 2017: Life Sciences
https://www.readbyqxmd.com/read/28238718/towards-therapeutic-advances-in-melanoma-management-an-overview
#18
REVIEW
Swarnendra Singh, Atif Zafar, Saman Khan, Imrana Naseem
Melanoma is one of the most aggressive types of skin cancer with rapidly increasing incidence rate. The disease is largely considered incurable and the patients diagnosed with metastatic melanoma have a survival of not more than five years. Despite of the recent advances in anti-melanoma chemo- and immunotherapies, the available drugs are relatively toxic and responsive to only a limited subset of lesions. Currently, topical pharmacotherapy is demonstrated as an effective approach for the treatment of various skin cancers...
February 23, 2017: Life Sciences
https://www.readbyqxmd.com/read/28235543/protective-effects-of-linalool-against-amyloid-beta-induced-cognitive-deficits-and-damages-in-mice
#19
Pan Xu, Kezhu Wang, Cong Lu, Liming Dong, Li Gao, Ming Yan, Silafu Aibai, Yanyan Yang, Xinmin Liu
AIM: Amyloid-beta (Aβ)-mediated neurotoxicity plays a pivotal role in the pathogenesis of Alzheimer's disease (AD), which induces oxidative stress and apoptosis. Linalool (LI) is a volatile monoterpene showing positive effect in AD treatment. This study was designed to research the protective effect of LI against neurotoxicity and cognitive deficits induced by Aβ1-40 in mice. MAIN METHODS: Aβ1-40 (4μg) solution was injected in the bilateral hippocampus to induce cognitive deficits of mice...
February 21, 2017: Life Sciences
https://www.readbyqxmd.com/read/28228355/altered-lipid-metabolism-in-rat-offspring-of-dams-fed-a-low-protein-diet-containing-soy-protein-isolate
#20
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
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