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Kyle Spivack, Matthew Tucker, Devon Zimmerman, Matthew Nicholas, Osheiza Abdulmalik, Noelle Comolli, Jacob Elmer
Since donated red blood cells must be constantly refrigerated, they are often unavailable in remote areas and battlefields. The goal of this study was to synthesize a highly stable blood substitute that does not require refrigeration. Specifically, the extracellular haemoglobin (a.k.a. erythrocruorin, Ec) of the earthworm Lumbricus terrestris erythrocruororin (LtEc) was cross-linked with poly(acrylic acid) (PAA) and ethylene diamine (EDA). PAGE analysis of the LtEc nanoparticles reveals cross-linking between subunits, while dynamic light scattering and scanning electron microscopy show that cross-linking significantly increases the size of the LtEc nanoparticles (164 ± 13...
June 19, 2018: Artificial Cells, Nanomedicine, and Biotechnology
Albin Lobo, José M Torres-Ruiz, Regis Burlett, Cedric Lemaire, Camille Parise, Claire Francioni, Laura Truffaut, Ivana Tomášková, Jon Kehlet Hansen, Erik Dahl Kjær, Antoine Kremer, Sylvain Delzon
The genus Quercus comprises important species in forestry not only for their productive value but also for their ability to withstand drought. Hence an evaluation of inter- and intraspecific variation in drought tolerance is important for selecting the best adapted species and provenances for future afforestation. The presence of long vessels makes it difficult to assess xylem vulnerability to embolism in oak. Thanks to the development of an in situ flow centrifuge equipped with a large rotor, we quantified (i) the between species variability of embolism resistance in four native and two exotic species of oaks in Europe and (ii) the within species variability in Quercus petraea ...
September 15, 2018: Forest Ecology and Management
Bharti Garg, Bhuwan Giri, Shrey Modi, Vrishketan Sethi, Iris Castro, Oliver Umland, Yuguang Ban, Shweta Lavania, Rajinder Dawra, Sulagna Banerjee, Selwyn Vickers, Nipun B Merchant, Steven Xi Chen, Eli Gilboa, Sundaram Ramakrishnan, Ashok Saluja, Vikas Dudeja
BACKGROUND & AIMS: Immunotherapies are ineffective against pancreatic cancer. We investigated whether the activity of nuclear factor (NF)κB in pancreatic stromal cells contributes to an environment that suppresses anti-tumor immune response. METHODS: Pancreata of C57BL/6 or Rag1-/- mice were given pancreatic injections of a combination of KrasG12D/+; Trp53 R172H/+; Pdx-1cre (KPC) pancreatic cancer cells and pancreatic stellate cells (PSCs) extracted from C57BL/6 (control) or mice with disruption of the gene encoding the NFkB p50 subunit (Nfkb1 or p50-/- mice)...
June 14, 2018: Gastroenterology
Yu-Qiong He, Hua Yang, Yi Shen, Jian-Hua Zhang, Zhi-Guo Zhang, Lin-Lin Liu, Hong-Tao Song, Bin Lin, Hsien-Yeh Hsu, Lu-Ping Qin, Ting Han, Hai-Liang Xin, Qiao-Yan Zhang
Estrogen deficiency and inflammation are known to play important roles in bone metabolism and occurrence of osteoporosis. Monotropein as an iridoid glycoside is reported to decrease estrogen deficiency-induced bone loss and inhibit inflammatory response in LPS-induced RAW 264.7 macrophages. However, the effect of monotropein on bone loss in chronic inflammatory conditions remains unclear. It was found in the present study that monotropein significantly inhibited bone mass reduction and improved bone micro-architectures by enhancing bone formation and blocking increased secretion of inflammatory cytokines in osteoporotic mice induced by combined ovariectomy and LPS...
June 14, 2018: Chemico-biological Interactions
Paul A Lapchak, Paul D Boitano, Geoffrey de Couto, Eduardo Marbán
Acute ischemic stroke is devastating to patients and their families because of few viable therapeutic options to promote recovery after reperfusion windows close. Recent breakthroughs in biotechnology have resulted in a reproducible patented process for the purification of extracellular vesicles (EVs) from human cardiosphere-derived cells (CDCs). Because CDC-EVs have many features potentially beneficial to treat acute ischemic stroke, CDC-EVs were evaluated in an established small-clot rabbit embolic stroke model, where clinically relevant end points were used to assess recovery in a more translational large animal model...
June 13, 2018: Experimental Neurology
Shufeng Kang, Shizhao Liu, Hongzhu Li, Dapeng Wang, Xiangbei Qi
Baicalin had neuroprotective effects on inhibiting neuronal cell apoptosis induced by spinal cord ischemic injury. This study aimed to explore the protective effects of Baicalin on rats with spinal cord injury (SCI) and its mechanism of action. The recovery of spinal cord nerve function in rats was evaluated by the Basso, Beattie, and Bresnahan (BBB) score and the combine behavioral score (CBS). The expressions of cytokines tumor necrosis factor α (TNF-α), interleukin-1β (IL-1β), and IL-6 were detected by the enzyme-linked immunosorbent assay method...
June 15, 2018: Journal of Cellular Biochemistry
Alexandria L Pivovaroff, Victoria M W Cook, Louis S Santiago
Isohydry (maintenance of plant water potential at the cost of carbon gain) and anisohydry (gas exchange maintenance at the cost of declining plant water status) make up two ends of a stomatal drought response strategy continuum. However, few studies have merged measures of stomatal regulation with xylem hydraulic safety strategies based on in situ field measurements. The goal of this study was to characterize the stomatal and xylem hydraulic safety strategies of woody species in the biodiverse Mediterranean-type ecosystem region of California...
June 14, 2018: Plant, Cell & Environment
Yifei Ouyang, Bing Zhang, Zhihong Wang, Ji Zhang, Hongru Jiang, Feifei Huang, Xiaofang Jia, Yun Wang, Li Li, Huijun Wang
OBJECTIVE: To examine nuts and nuts products consumption in a sample of Chinese adults aged 18-59 years old. METHODS: Samples were chosen from 2015 China Nutritional Transition Cohort Study. A total of 10 401 participants aged 18-59 years were included in the final analysis. Three consecutive 24 h recalls were used to collect dietary consumption data. Average daily nuts, pre-packaged nuts products, and total nuts consumption were calculated. Non-parametric test was used to compare the differences...
March 2018: Wei Sheng Yan Jiu, Journal of Hygiene Research
Yuya Tsurudome, Satoru Koyanagi, Takumi Kanemitsu, Chiharu Katamune, Masayuki Oda, Yuki Kanado, Mizuki Kato, Akari Morita, Yu Tahara, Naoya Matsunaga, Shigenobu Shibata, Shigehiro Ohdo
A number of diverse cell-surface proteins are anchored to the cytoskeleton via scaffold proteins. Na+ /H+ exchanger regulatory factor-1 (NHERF1), encoded by the Slc9a3r1 gene, functions as a scaffold protein, which is implicated in the regulation of membrane expression of various cell-surface proteins. Here, we demonstrate that the circadian clock component PERIOD2 (PER2) modulates transcription of the mouse Slc9a3r1 gene, generating diurnal accumulation of NHERF1 in the mouse liver. Basal expression of Slc9a3r1 was dependent on transcriptional activation by p65/p50...
June 13, 2018: Scientific Reports
M Bach, M B Hoffmann
The data presented in this article are related to the research article entitled "Retinal conduction speed analysis reveals different origins of the P50 and N95 components of the (multifocal) pattern electroretinogram" (Bach et al., 2018) [1]. That analysis required the individual length data of the retinal nerve fibers (from ganglion cell body to optic nerve head, depending on the position of the ganglion cell body). Jansonius et al. (2009, 2012) [2,3] mathematically modeled the path morphology of the human retinal nerve fibers...
June 2018: Data in Brief
O Del Moral-Hernández, C Santiago-Olivares, E Rivera-Toledo, J Gaona, E Castillo-Villanueva, B Gómez
Respiratory syncytial virus (RSV) is a highly prevalent infectious agent that causes severe respiratory tract illnesses in infants and children worldwide. Children who have suffered severe RSV infections during infancy are prone to develop recurrent episodes of wheezing and asthma that may be associated with viral persistence. RSV infections in humans and animal models are characterized by extensive inflammatory responses. Epithelial cell lines acutely infected by RSV have shown activation of the NF-κB signaling through two independent pathways: the canonical pathway, mediated by RelA and p50 subunits, and the non-canonical pathway, mediated by the subunits RelB and p52...
2018: Acta Virologica
Ying Pan, Si-Chao Huang, Xia Wang, Wu-Xing Gong, Cui-Wei Liang, Jun-Xiang DU, Dong-Xu Peng, Yun Xie, Li-Ping Zheng, Nan Zhang, Wen Quan
OBJECTIVE: To explore the intrinsic connection between activation of classical nuclear factor-κB (NF-κB) pathway and gefitinib resistance in human lung adenocarcinoma H1650 cells. METHODS: Human lung adenocarcinoma H1650 cells were exposed to gefitinib continuously for 60 days to obtain resistant H1650 cells. The expressions of P-IκBα, P-p50 and P-p65 in the cytoplasm or nuclei were detected using Western blotting in human lung adenocarcinoma HCC827 cells, parental H1650 cells and gefitinib-resistant H1650 cells...
May 20, 2018: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
Wipawee Wongchana, Pornrat Kongkavitoon, Pattarin Tangtanatakul, Chutamath Sittplangkoon, Patcharavadee Butta, Supatta Chawalitpong, Thitiporn Pattarakankul, Barbara A Osborne, Tanapat Palaga
Macrophages exhibit diverse effector phenotypes depending on the stimuli and their microenvironment. Classically activated macrophages are primed with interferon (IFN)γ and stimulated with pathogen-associated molecular patterns. They produce inflammatory mediators and inflammatory cytokines, such as IL-12. In the presence of immune complexes (ICs), activated macrophages have decreased IL-12 production and increased IL-10 production and presumably act as regulatory macrophages. Notch signaling has been shown to regulate the effector functions of classically activated macrophages...
2018: PloS One
Ravichandra Karkal, Nishant Goyal, Sai Krishna Tikka, Roshan V Khanande, Anil Kakunje, Christoday R J Khess
Background: Sensory gating refers to "filtering" of irrelevant sensory input in the brain. Auditory sensory gating deficit has been considered as a marker of schizophrenia (SCZ) and assessed using P50 paired-click paradigm. We explore sensory gating deficits and their clinical correlates in SCZ. Materials and Methods: Twenty-five drug-free/drug-naïve patients with SCZ, whose psychopathology was assessed using Positive and Negative Syndrome Scale (PANSS), and 25 age-matched normal controls (NC) were recruited...
May 2018: Indian Journal of Psychological Medicine
Matthias Vonderach, Dominic P Byrne, Perdita E Barran, Patrick A Eyers, Claire E Eyers
The NF-κB transcription factors are known to be extensively phosphorylated, with dynamic site-specific modification regulating their ability to dimerize and interact with DNA. p50, the proteolytic product of p105 (NF-κB1), forms homodimers that bind DNA but lack intrinsic transactivation function, functioning as repressors of transcription from κB promoters. Here, we examine the roles of specific phosphorylation events catalysed by either protein kinase A (PKAc ) or Chk1, in regulating the functions of p50 homodimers...
June 5, 2018: Journal of the American Society for Mass Spectrometry
Li-Juan Zhu, Huan-Yu Ni, Rong Chen, Lei Chang, Hu-Jiang Shi, Dan Qiu, Zhan Zhang, Dan-Lian Wu, Zhao-Chun Jiang, Hong-Liang Xin, Qi-Gang Zhou, Dong-Ya Zhu
Anxiety disorders are associated with a high social burden worldwide. Recently, increasing evidence suggests that nuclear factor kappa B (NF-κB) has significant implications for psychiatric diseases, including anxiety and depressive disorders. However, the molecular mechanisms underlying the role of NF-κB in stress-induced anxiety behaviors are poorly understood. In this study, we show that chronic mild stress (CMS) and glucocorticoids dramatically increased the expression of NF-κB subunits p50 and p65, phosphorylation and acetylation of p65, and the level of nuclear p65 in vivo and in vitro, implicating activation of NF-κB signaling in chronic stress-induced pathological processes...
June 2, 2018: Journal of Neurochemistry
Liangli Yang, Qiuping Gao, Junjun Dai, Guozhen Yuan, Lei Wang, Cen Qian, Baojian Zhu, Chaoliang Liu, Guoqing Wei
Colleterial glands (CG) present in the body of adult female of Bombyx mori, which can help adhere eggs on the surface of the host plants. Although this organ has been known for centuries, only morphology and its secretions have been studied. Their gene expression profiles and physiological roles remain largely unknown. Aided by high-throughput next generation sequencing (NGS), we reported the comparative transcriptome analysis of CG isolated from the H9 and the P50 strains of Bombyx mori. A total of 19,896,957 and 20,446,366 clean reads were obtained from CG of H9 and the P50 strains, respectively; then differential expression analysis was performed, and 1,509 differentially expressed genes (DEGs) were identified...
2018: PloS One
Baolong Qin, Qing Wang, Yuchao Lu, Cong Li, Henglong Hu, Jiaqiao Zhang, Yufeng Wang, Jianning Zhu, Yunpeng Zhu, Yang Xun, Shaogang Wang
Calcium oxalate (CaOx) is the most common type of urinary stone. Increase of ROS and NADPH oxidase gives rise to inflammation and injury of renal tubular cells, which promotes CaOx stone formation. Recent studies have revealed that the renin-angiotensin system might play a role in kidney crystallization and ROS production. Here, we investigated the involvement of Ang II/AT1R and losartan in CaOx stone formation. NRK-52E cells were incubated with CaOx crystals, and glyoxylic acid-induced hyperoxaluric rats were treated with losartan...
2018: Oxidative Medicine and Cellular Longevity
SongTao Xiang, PeiLiang Zou, JingJing Wu, Fang Zheng, Qing Tang, Jianfu Zhou, Swei Sunny Hann
BACKGROUND/AIMS: Polyphyllin I (PPI), one of the steroidal saponins in Paris polyphylla, reportedly exhibits antitumor effects. However, the detailed mechanism underlying PPI, particularly in enhancing the effect of the androgen receptor inhibitor enzalutamide in controlling castration-resistant prostate cancer (CRPC) has not been explored. METHODS: Cell viability and cell cycle distribution were measured using 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) and flow cytometry assays, respectively...
May 22, 2018: Cellular Physiology and Biochemistry
Sun Mi Gu, Hee Pom Lee, Young Wan Ham, Dong Ju Son, Hoi Yeong Kim, Ki Wan Oh, Sang-Bae Han, Jaesuk Yun, Jin Tae Hong
Amyloidogenesis is known to cause Alzheimer's disease. Our previous studies have found that lipopolysaccharide (LPS) causes neuroinflammation and amyloidogenesis through activation of nuclear factor kappaB (NF-κB). Piperlongumine (PL) is an alkaloid amide found naturally in long pepper (Piper longum) isolates; it was reported to have inhibitory effects on NF-κB activity. We therefore investigated whether PL exhibits anti-inflammatory and anti-amyloidogenic effects by inhibiting NF-κB. A murine model of LPS-induced memory impairment was made via the intraperitoneal (i...
May 25, 2018: Neuromolecular Medicine
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