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Journal of Biomedical Research

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https://www.readbyqxmd.com/read/28110321/recent-advances-in-arsenic-trioxide-encapsulated-nanoparticles-as-drug-delivery-agents-to-solid-cancers
#1
Akhtar Anam, Wang Scarlet Xiaoyan, Ghali Lucy, Bell Celia, Wen Xuesong
Since arsenic trioxide was first approved as the front line therapy for acute promyelocytic leukemia 25 years ago, its anti-cancer properties for various malignancies have been under intense investigation. However, the clinical successes of arsenic trioxide in treating hematological cancers have not been translated to solid cancers. This is due to arsenic's rapid clearance by the body's immune system before reaching the tumor site. Several attempts have henceforth been made to increase its bioavailability toward solid cancers without increasing its dosage albeit without much success...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28110320/acute-on-chronic-liver-failure-recent-update
#2
Alam Azeem, Chun Suen Ka, Ma Daqing
Acute on chronic liver failure (ACLF) was first described in 1995 as a clinical syndrome distinct to classic acute decompensation. Characterized by complications of decompensation, ACLF occurs on a background of chronic liver dysfunction and is associated with high rates of organ failure and significant short-term mortality estimated between 45% and 90%. Despite the clinical relevance of the condition, it still remains largely undefined with continued disagreement regarding its precise etiological factors, clinical course, prognostic criteria and management pathways...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28110319/perioperative-remote-acute-lung-injury-recent-update
#3
Jin Zhaosheng, Suen Ka Chun, Ma Daqing
Perioperative acute lung injury (ALI) is a syndrome characterised by hypoxia and chest radiograph changes. It is a serious post-operative complication, associated with considerable mortality and morbidity. In addition to mechanical ventilation, remote organ insult could also trigger systemic responses which induce ALI. Currently, there are limited treatment options available beyond conservative respiratory support. However, increasing understanding of the pathophysiology of ALI and the biochemical pathways involved will aid the development of novel treatments and help to improve patient outcome as well as to reduce cost to the health service...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28110318/genetic-variation-of-the-psca-gene-rs2294008-is-not-associated-with-the-risk-of-prostate-cancer
#4
Lee Il-Seok, Pil Seo Sung, Sok Ha Yun, Jeong Pildu, Won Kang Ho, Tae Kim Won, Kim Yong-June, Joong Yun Seok, Cheol Lee Sang, Kim Wun-Jae
Prostate stem cell antigen (PSCA) is a cell-membrane glycoprotein consisting of 123 amino acids and highly expressed in the prostate, but there have been few reports on the relationship between rs2294008 of PSCA and prostate cancer in the literature. Therefore, we evaluated the association between rs2294008 and the risk of prostate cancer. A total of 240 prostate cancer patients and 306 controls (patients with benign prostatic hyperplasia) were enrolled. Genotype analysis of rs2294008 of PSCA was performed using PCR...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28110317/the-effect-of-sunblock-against-oxidative-stress-in-farmers-a-pilot-study
#5
Kim Yong-Dae, Yim Dong-Hyuk, Eom Sang-Yong, Yeoun Lee Ji, Kim Heon
Farmers are frequently exposed to ultraviolet (UV) radiation which causes various diseases by inducing oxidative stress. This study aimed to assess the effects of sunblock on oxidative stress in the body. Eighty-seven farmers were divided into two groups: those who wore sunblock for five days and those who did not. The total antioxidant capacity (TAC) in urine, which is an antioxidant indicator, and 8-hydroxy-2-deoxyguanosine (8-OHdG) levels in urine, an oxidative stress indicator, were measured. The urinary TAC of sunblock users was significantly higher than that of non-users, but urinary 8-OHdG levels were not significantly different...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28110316/insensitivity-of-pi3k-akt-gsk3-signaling-in-peripheral-blood-mononuclear-cells-of-age-related-macular-degeneration-patients
#6
X Liu, Z Yao
Our recent studies with cultured retinal pigment epithelium cells suggested that overexpression of interleukin 17 receptor C (IL-17RC), a phenomenon observed in peripheral blood and chorioretinal tissues with age-related macular degeneration (AMD), was associated with altered activation of phosphatidylinositide 3-kinase (PI3K), Akt, and glycogen synthase kinase 3 (GSK3). We wondered whether or not altered PI3K, Akt, and GSK3 activities could be detected in peripheral blood mononuclear cells (PBMC) obtained from AMD patients...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28110315/effect-of-zeaxanthin-on-porcine-embryonic-development-during-in-vitro-maturation
#7
Seo Park, Kyoung So, Sang Hyun
Zeaxanthin is a common carotenoid, which is a powerful antioxidant that protects against damage caused by reactive oxygen species. The aim of the present study was to investigate the effects of zeaxanthin supplementation on in vitro maturation of porcine embryo development. We investigated nuclear maturation, intracellular glutathione (GSH), and reactive oxygen species (ROS) levels during in vitro maturation, and subsequent embryonic development following parthenogenetic activation and in vitro fertilization (IVF)...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/27924071/the-combination-therapy-of-imatinib-and-dasatinib-achieves-long-term-molecular-response-in-two-imatinib-resistant-and-dasatinibintolerant-patients-with-advanced-chronic-myeloid-leukemia
#8
Yu Zhu, Liangqin Pan, Ming Hong, Weixing Liu, Chun Qiao, Jianyong Li, Sixuan Qian
For patients with chronic myeloid leukemia (CML) failing imatinib therapy, second-generation tyrosine kinase inhibitors (TKIs) are recommended. Here, we describe two patients with advanced CML who failed imatinib therapy and did not tolerate the recommended dose of dasatinib, but then achieved a major molecular response with the combination of imatinib and dasatinib with no significant extramedullary toxicity. Our observations suggest that combination of TKIs may provide an additive/synergistic antileukemic effect...
November 2016: Journal of Biomedical Research
https://www.readbyqxmd.com/read/27924070/modified-methods-for-isolation-of-pancreatic-stellate-cells-from-human-and-rodent-pancreas
#9
Liangtao Zhao, Baobao Cai, Zipeng Lu, Lei Tian, Song Guo, Pengfei Wu, Dong Qian, Qingcheng Xu, Kuirong Jiang, Yi Miao
Primary cultures of pancreatic stellate cells (PSCs) remain an important basis for in vitro study. However, effective methods for isolating abundant PSCs are currently lacking. We report on a novel approach to isolating PSCs from normal rat pancreases and human pancreatic ductal adenocarcinoma (PDAC) tissue. After anaesthesia and laparotomy of the rat, a blunt cannula was inserted into the pancreatic duct through the anti-mesentery side of the duodenum, and the pancreas was slowly infused with an enzyme solution until all lobules were fully dispersed...
November 2016: Journal of Biomedical Research
https://www.readbyqxmd.com/read/27924069/retrograde-trafficking-of-vmat2-and-its-role-in-protein-stability-in-non-neuronal-cells
#10
Qiuzi Wu, Hongfei Xu, Wei Wang, Fei Chang, Yu Jiang, Yongjian Liu
Increasing evidence suggests that the impaired neuroprotection of vesicular monoamine transporter 2 (VMAT2) contributes to the pathogenesis of Parkinson's disease. That has been linked to aberrant subcellular retrograde trafficking as strongly indicated by recent genomic studies on familial Parkinson's diseases. However, whether VMAT2 function is regulated by retrograde trafficking is unknown. By using biochemistry and cell biology approaches, we have shown that VMAT2 was stringently localized to the trans-Golgi network and underwent retrograde trafficking in non-neuronal cells...
November 2016: Journal of Biomedical Research
https://www.readbyqxmd.com/read/27924068/protein-inhibitor-of-activated-stat-4-pias4-regulates-liver-fibrosis-through-modulating-smad3-activity
#11
Huihui Xu, Zhiwen Fan, Wenfang Tian, Yong Xu
Excessive fibrogenesis disrupts normal liver structure, impairs liver function, and precipitates the development of cirrhosis, an irreversible end-stage liver disease. A host of factors including nutrition surplus contribute to liver fibrosis but the underlying mechanism is not fully understood. In the present study, we investigated the involvement of protein inhibitor for activated stat 4 (PIAS4) in liver fibrosis in a mouse model of non-alcoholic steatohepatitis (NASH). We report that PIAS4 silencing using short hairpin RNA (shRNA) attenuated high-fat high-carbohydrate (HFHC) diet induced liver fibrosis in mice...
November 2016: Journal of Biomedical Research
https://www.readbyqxmd.com/read/27924067/chronic-intermittent-hypoxia-induces-cardiac-inflammation-and-dysfunction-in-a-rat-obstructive-sleep-apnea-model
#12
Qin Wei, Yeping Bian, Fuchao Yu, Qiang Zhang, Guanghao Zhang, Yang Li, Songsong Song, Xiaomei Ren, Jiayi Tong
Chronic intermittent hypoxia is considered to play an important role in cardiovascular pathogenesis during the development of obstructive sleep apnea (OSA). We used a well-described OSA rat model induced with simultaneous intermittent hypoxia. Male Sprague Dawley rats were individually placed into plexiglass chambers with air pressure and components were electronically controlled. The rats were exposed to intermittent hypoxia 8 hours daily for 5 weeks. The changes of cardiac structure and function were examined by ultrasound...
November 2016: Journal of Biomedical Research
https://www.readbyqxmd.com/read/27924066/assessment-of-atrial-electromechanical-interval-using-echocardiography-after-catheter-ablation-in-patients-with-persistent-atrial-fibrillation
#13
Xiaodong Chen, Minglong Chen, Yingying Wang, Bing Yang, Weizhu Ju, Fengxiang Zhang, Kejiang Cao
We sought to investigate variation of atrial electromechanical interval after catheter ablation procedure in patients with persistent atrial fibrillation using pulse Doppler (PW) and pulse tissue Doppler imaging (PW-TDI). A total of 25 consecutive in-patients with persistent atrial fibrillation, who restored sinus rhythm after ablation procedure, were recruited in our cardiac center. Echocardiography was performed on each patient at 2 hours, 1 day, 5 days, 1 month and 3 months after the ablation therapy, and atrial electromechanical delay was measured simultaneously by PW and PW-TDI...
November 2016: Journal of Biomedical Research
https://www.readbyqxmd.com/read/27924065/the-more-the-messier-centrosome-amplification-as-a-novel-biomarker-for-personalized-treatment-of-colorectal-cancers
#14
REVIEW
Monica M Mahathre, Padmashree Cg Rida, Ritu Aneja
Colon cancer is currently the third most common cancer and second most fatal cancer in the United States, resulting in approximately 600,000 deaths annually. Though colorectal cancer death rates are decreasing by about 3% every year, disease outcomes could be substantially improved with more research into the drivers of colon carcinogenesis, the determinants of aggressiveness in colorectal cancer and the identification of biomarkers that could enable choice of more optimal treatments. Colon carcinogenesis is notably a slow process that can take decades...
November 2016: Journal of Biomedical Research
https://www.readbyqxmd.com/read/27476880/silibinin-and-colorectal-cancer-chemoprevention-a-comprehensive-review-on-mechanisms-and-efficacy
#15
REVIEW
Komal Raina, Sushil Kumar, Deepanshi Dhar, Rajesh Agarwal
Globally, the risk of colorectal cancer (CRC) as well as the incidence of mortality associated with CRC is increasing. Thus, it is imperative that we look at alternative approaches involving intake of non-toxic natural dietary/non-dietary agents, for the prevention of CRC. The ultimate goal of this approach is to reduce the incidence of pre-neoplastic adenomatous polyps and prevent their progression to more advanced forms of CRC, and use these natural agents as a safe intervention strategy during the clinical course of this deadly malignancy...
November 2016: Journal of Biomedical Research
https://www.readbyqxmd.com/read/27231040/association-between-tshr-gene-polymorphism-and-the-risk-of-graves-disease-a-meta-analysis
#16
Wei Qian, Kuanfeng Xu, Wenting Jia, Ling Lan, Xuqin Zheng, Xueyang Yang, Dai Cui
Thyroid stimulating hormone receptor (TSHR) is thought to be a significant candidate for genetic susceptibility to Graves' disease (GD). However, the association between TSHR gene polymorphism and the risk of GD remains controversial. In this study, we investigated the relationship between the two conditions by meta-analysis. We searched all relevant case-control studies in PubMed, Web of Science, CNKI and Wanfang for literature available until May 2015, and chose studies on two single nucleotide polymorphisms (SNPs): rs179247 and rs12101255, within TSHR intron-1...
November 2016: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28110324/setting-kinetics-and-mechanical-properties-of-flax-fibre-reinforced-glass-ionomer-restorative-materials
#17
Abou Neel Ensanya Ali, Young Anne M
Regardless of the excellent properties of glass ionomer cements, their poor mechanical properties limit their applications to non-load bearing areas. This study aimed to investigate the effect of incorporated short, chopped and randomly distributed flax fibers (0, 0.5, 1, 2.5, 5 and 25 wt%) on setting reaction kinetics, and mechanical and morphological properties of glass ionomer cements. Addition of flax fibers did not significantly affect the setting reaction extent. According to their content, flax fibers increased the compressive (from 148 to 250 MPa) and flexure strength (from 20 to 42 MPa)...
October 17, 2016: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28110323/aggf1-attenuates-hepatic-inflammation-and-activation-of-hepatic-stellate-cells-by-repressing-ccl2-transcription
#18
Xu Wenping, Zeng Sheng, Li Min, Fan Zhiwen, Zhou Bisheng
Liver injury represents a continuum of pathophysiological processes involving a complex interplay between hepatocytes, macrophages, and hepatic stellate cells. The mechanism whereby these intercellular interactions contribute to liver injury and fibrosis is not completely understood. We report here that angiogenic factor with G patch and FHA domains 1 (Aggf1) was downregulated in the livers of cirrhotic patients compared to healthy controls and in primary hepatocytes in response to carbon tetrachloride (CCl4) stimulation...
October 17, 2016: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28110322/classification-of-facial-wrinkles-among-chinese-women
#19
Zhang Jiechen, Hou Wei, Feng Suying, Chen Xiangsheng, Wang Hongwei
It is generally recognized that Caucasians and Asians have different skin aging features. The aim of this study was to develop a facial wrinkle grading scale for Chinese women. Standard photographs were taken of 242 Chinese women. Six sets of 0 to 9 wrinkle scales with reference photographs and descriptions were selected, including grading scales for resting and hyperkinetic crow's feet, frontalis lines, glabellar frown lines, and nasolabial folds. To identify the scale by objective quantitative measurement, skin surface measurements from the Visioscan(®) VC98 were used...
October 17, 2016: Journal of Biomedical Research
https://www.readbyqxmd.com/read/27760889/g-aminobutyric-acid-promotes-methionine-choline-deficient-diet-induced-nonalcoholic-steatohepatitis
#20
Seok Roh Yoon, Cho Ara, Zhou Zixiong, Jeong Hyuneui, Park Jeong-Eun, Cha Youn-Soo, Oh Suk-Heung, Lim Chae-Woong, Kim Bumseok
Nonalcoholic steatohepatitis (NASH) is one of the most common liver diseases and a major cause of liver fibrosis worldwide. G-Aminobutyric acid (GABA) is one of the most abundant inhibitory neurotransmitters in the central nervous system. Recently, it has been reported that GABAergic signaling pathways are found in various non-neuronal tissues including the immune system and play a functional role. In the present study, we investigated whether administration of GABA has effects on NASH through its immunomodulatory effects...
October 17, 2016: Journal of Biomedical Research
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