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https://www.readbyqxmd.com/read/29055138/effects-of-a-bone-graft-substitute-consisting-of-porous-gradient-ha-zro2-and-gelatin-chitosan-slow-release-hydrogel-containing-bmp-2-and-bmscs-on-lumbar-vertebral-defect-repair-in-rhesus-monkey
#1
Rong-Xue Shao, Ren-Fu Quan, Tuo Wang, Wei-Bin Du, Gao-Yong Jia, Dong Wang, Long-Bao Lv, Cai-Yin Xu, Xi-Cheng Wei, Jin-Fu Wang, Di-Sheng Yang
Dense biomaterial plays an important role in bone replacement. However, it fails to induce bone-cell migration into graft material. In the present study, a novel bone-graft substitute (BGS) consisting of porous gradient HA/ZrO2 composite (PGHC) and gelatin/chitosan slow-release hydrogel containing BMP-2 and BMSCs was designed and prepared to repair lumbar vertebral defects. The morphological characteristics of the BGS evaluated by scanning electron microscope showed that it had a three-dimensional network structure with uniformly distributed chitosan microspheres on the surfaces of the graft material and the interior of the pores...
October 21, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29054946/management-challenges-of-late-presentation-dacron-patch-infection-after-carotid-endarterectomy
#2
Jie Hua Xu, Nishath Altaf, Patrik Tosenovsky, Bibombe Patrice Mwipatayi
An 83-year-old man presented 4 years after right carotid endarterectomy (CEA) with an infection of his prosthetic Dacron patch. Initial scans (CT angiogram and whole body labelled white cell scan) were clear with no infection or collection noted. Systemically, the patient presented well with no recorded fevers. With an occluded left internal carotid artery and severely stenosed vertebral arteries, surgery presented a high risk of major stroke due to the lack collateral supply and this was discussed extensively...
October 19, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29054877/ontogeny-of-circadian-rhythms-and-synchrony-in-the-suprachiasmatic-nucleus
#3
Vania Carmona-Alcocer, John H Abel, Tao C Sun, Linda R Petzold, Francis J Doyle, Carrie L Simms, Erik D Herzog
In mammals, the suprachiasmatic nucleus (SCN) of the hypothalamus coordinates daily rhythms including sleep-wake, hormone release and gene expression. The cells of the SCN must synchronize to each other to drive these circadian rhythms in the rest of the body. The ontogeny of circadian cycling and intercellular coupling in the SCN remains poorly understood. Recent in vitro studies have recorded circadian rhythms from the whole embryonic SCN. Here, we tracked the onset and precision of rhythms in PERIOD2 (PER2), a clock protein, within the SCN isolated from embryonic and postnatal mice of undetermined sex...
October 20, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29054828/cloning-and-expression-study-of-an-irf4a-gene-and-its-two-transcript-variants-in-turbot-scophthalmus-maximus
#4
Song Li, Guobin Hu, Zhipeng Chen, Lianfei Song, Guanjie Wang, Dahai Liu, Qiuming Liu
Interferon regulatory factor 4 (IRF4) is known to be involved in antiviral response as well as regulation of functional and developmental processes in lymphomyeloid cell lineages in mammals. In this study, the gene of IRF4a and its two transcript variants (named IRF4a1 and -2) were cloned from turbot, Scophthalmus maximus, the tissue distributions and in vivo immune responsive expression patterns of the two transcripts were subsequently examined. The Scophthalmus maximus (Sm)IRF4a gene is 8367 nucleotide (nt) in length, consisting of eight exons and seven introns...
October 17, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29054504/proteomics-in-plasma-of-ovariectomized-rats-and-those-exposed-to-estradiol-valerate
#5
Hai Jiang, Wenpei Bai, Wenjuan Wang, Ke Wang, Jing Jia, Jing Zhang, He Diao, Lihua Qin
The menopausal period, an inevitable physiological process for women, is frequently associated with physiological and psychological dysfunction attributable to substantial fluctuation and gradual decrease in female hormones induced by ovarian failure, leading to corresponding symptoms and diseases that impact multiple systems in the body to varying degrees. As prior studies have focused primarily on menopausal syndrome-related pathophysiological changes and hormone replacement therapy effects, here we approached menopausal disease incidence risk and pathogenesis through systemic plasma proteomics analysis...
October 17, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29054476/extracellular-vesicles-as-emerging-targets-in-cancer-recent-development-from-bench-to-bedside
#6
REVIEW
Kerui Wu, Fei Xing, Shih-Ying Wu, Kounosuke Watabe
Extracellular vesicles (EVs) have emerged as important players of cancer initiation and progression through cell-cell communication. They have been recognized as critical mediators of extracellular communications, which promote transformation, growth invasion, and drug-resistance of cancer cells. Interestingly, the secretion and uptake of EVs are regulated in a more controlled manner than previously anticipated. EVs are classified into three groups, (i) exosomes, (ii) microvesicles (MVs), and (iii) apoptotic bodies (ABs), based on their sizes and origins, and novel technologies to isolate and distinguish these EVs are evolving...
October 17, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29054405/standardized-extract-of-bacopa-monnieri-cdri-08-effect-on-germ-cell-dynamics-and-possible-mechanisms-of-its-beneficial-action-on-spermatogenesis-and-sperm-quality-in-male-mice
#7
Shishir Kumar Patel, Shilpi Singh, Shio Kumar Singh
Bacopa monnieri (BM) is used in traditional medicine as nerve tonic. We have recently shown that CDRI-08, a standardized extract of BM, improves testicular functions and epididymal sperm quality in Parkes (P) mice. The aim of the present study was to investigate the effect of CDRI-08 on germ cell dynamics and mechanisms of its action on spermatogenesis and sperm quality in P mice, and to determine the chemical profile of the extract. CDRI-08 (40 and 80 mg/kg body weight) was orally administered to male mice for 28 days...
October 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29054337/dental-pulp-stem-cells-dpscs-increase-prostate-cancer-cell-proliferation-and-migration-under-in-vitro-conditions
#8
Ayşegül Doğan, Selami Demirci, Hüseyin Apdik, Ezgi Avşar Apdik, Fikrettin Şahin
Cancer as a multistep and complicated disease is regulated by several molecular and cellular events. Cancer treatment could be managed at the early stages when the tumor is confined in the tissue. However, disseminated cancer cells metastasize to other body parts and generate new tumors resulting in mortality. Mesenchymal stem cells (MSCs) are found in different body parts and helps adult tissue regeneration. The role of MSCs in cancer progression has emerged as one of the important aspects in cancer biology and is the aim of interest in recent years...
October 16, 2017: Tissue & Cell
https://www.readbyqxmd.com/read/29054323/human-kidney-stone-matrix-latent-potential-to-restrain-com-induced-cytotoxicity-and-inflammatory-response
#9
Shifa Narula, Simran Tandon, Prakash Baligar, Shrawan Kumar Singh, Chanderdeep Tandon
Kidney stone disease is a multi-factorial disorder resulting from the interplay of various risk factors including lifestyle, environment and genetics along with metabolic activities inside the body. However, it is difficult to determine how these factors converge to promote stone disease. Extensive investigations of kidney stone composition at the molecular level have been carried out however; its impact on the complex mechanism of stone formation is still obscure. Hence, an in vitro study was designed to investigate the attenuation of calcium oxalate toxicity by human kidney stone matrix proteins on NRK-52E cells using flowcytometry, Western blotting, RT-PCR and immunofluorescence assays...
October 17, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29054136/combined-methylome-and-transcriptome-analysis-during-rat-hepatic-stellate-cell-activation
#10
Eva Schumacher, Silke Götze, Claus Kordes, Vladimir Benes, Dieter Häussinger
Hepatic stellate cells (HSC) are mesenchymal stem cells (MSC) of the liver. They are unique among MSC, since HSC remain in a quiescent, retinoid-storing state in the normal liver but become activated after liver injury and contribute to tissue repair. The epigenetic mechanisms accompanying the transition of HSC from a quiescent to an activated state are in the focus of the present study. We investigated the methylome and transcriptome during this process and observed profound changes. While the promoter methylation correlated negatively with gene expression, the gene body methylation revealed no clear correlation...
October 20, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/29053995/effects-of-a-whey-protein-supplementation-on-oxidative-stress-body-composition-and-glucose-metabolism-among-overweight-people-affected-by-diabetes-mellitus-or-impaired-fasting-glucose-a-pilot-study
#11
Chiara Flaim, Michael Kob, Angela M Di Pierro, Markus Herrmann, Lucio Lucchin
Obesity and diabetes mellitus type 2 (DM2) are characterized by chronic inflammation and oxidative stress [Donath et al. 2013] and this leads to cardiovascular diseases [Hulsmans & Holvoet 2010]. Whey proteins (WP) have antioxidant [Chitapanarux et al. 2009], anti-inflammatory [Sugawara et al. 2012] and hypoglycemic activities [Mignone et al. 2015], while data on weight, body composition [Frestedt et al. 2008; Aldrich et al. 2011] and blood pressure are conflicting [Kawase et al. 2000; Lee et al. 2007]. WP have unpleasant taste and smell [Patel 2015], but a new WP isolate (ProLYOtin®) seems to be more palatable...
May 20, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29053968/multiscale-3d-genome-rewiring-during-mouse-neural-development
#12
Boyan Bonev, Netta Mendelson Cohen, Quentin Szabo, Lauriane Fritsch, Giorgio L Papadopoulos, Yaniv Lubling, Xiaole Xu, Xiaodan Lv, Jean-Philippe Hugnot, Amos Tanay, Giacomo Cavalli
Chromosome conformation capture technologies have revealed important insights into genome folding. Yet, how spatial genome architecture is related to gene expression and cell fate remains unclear. We comprehensively mapped 3D chromatin organization during mouse neural differentiation in vitro and in vivo, generating the highest-resolution Hi-C maps available to date. We found that transcription is correlated with chromatin insulation and long-range interactions, but dCas9-mediated activation is insufficient for creating TAD boundaries de novo...
October 19, 2017: Cell
https://www.readbyqxmd.com/read/29053872/resveratrol-alleviates-heat-stress-induced-impairment-of-intestinal-morphology-microflora-and-barrier-integrity-in-broilers
#13
C Zhang, X H Zhao, L Yang, X Y Chen, R S Jiang, S H Jin, Z Y Geng
This study was to investigate the effect of resveratrol on intestinal morphology, microfloras, and barrier integrity of broilers subjected to heat stress. Two-hundred-seventy 21-day-old Cobb male broilers were randomly allocated to 3 treatment groups, each of which included 6 replicates with 15 birds per replicate. The 3 treatment groups were as follows: the control group, in which birds were exposed to thermoneutral condition (22 ± 1°C), and the heat stress group and heat stress + resveratrol (400 mg/kg) group, in which birds were exposed to cyclic heat stress (33 ± 1°C for 10 h/d from 0800 to 1800 h and 22 ± 1°C for the remaining time...
October 10, 2017: Poultry Science
https://www.readbyqxmd.com/read/29053824/chemogenetic-locus-coeruleus-activation-restores-reversal-learning-in-a-rat-model-of-alzheimer-s-disease
#14
Jacki M Rorabaugh, Termpanit Chalermpalanupap, Christian A Botz-Zapp, Vanessa M Fu, Natalie A Lembeck, Robert M Cohen, David Weinshenker
Clinical evidence suggests that aberrant tau accumulation in the locus coeruleus and noradrenergic dysfunction may be a critical early step in Alzheimer's disease progression. Yet, an accurate preclinical model of these phenotypes that includes early pretangle tau accrual in the locus coeruleus, loss of locus coeruleus innervation and deficits locus coeruleus/norepinephrine modulated behaviours, does not exist, hampering the identification of underlying mechanisms and the development of locus coeruleus-based therapies...
September 25, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29053817/autophagic-flux-is-required-for-the-synthesis-of-triacylglycerols-and-ribosomal-protein-turnover-in-chlamydomonas
#15
Inmaculada Couso, María Esther Pérez-Pérez, Enrique Martínez-Force, Hee-Sik Kim, Yonghua He, James G Umen, José L Crespo, Peter Bozhkov
Autophagy is an intracellular catabolic process that allows cells to recycle unneeded or damaged material to maintain cellular homeostasis. This highly dynamic process is characterized by the formation of double-membrane vesicles called autophagosomes, which engulf and deliver the cargo to the vacuole. Flow of material through the autophagy pathway and its degradation in the vacuole is known as autophagic flux, and reflects the autophagic degradation activity. A number of assays have been developed to determine autophagic flux in yeasts, mammals, and plants, but it has not been examined yet in algae...
October 19, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29053741/the-importance-of-propolis-in-alleviating-the-negative-physiological-effects-of-heat-stress-in-quail-chicks
#16
Gamal M K Mehaisen, Rania M Ibrahim, Adel A Desoky, Hosam M Safaa, Osama A El-Sayed, Ahmed O Abass
Heat stress is one of the most detrimental confrontations in tropical and subtropical regions of the world, causing considerable economic losses in poultry production. Propolis, a resinous product of worker honeybees, possesses several biological activities that could be used to alleviate the deleterious effects of high environmental temperature on poultry production. The current study was aimed at evaluating the effects of propolis supplementation to Japanese quail (Coturnix coturnix japonica) diets on the production performance, intestinal histomorphology, relative physiological and immunological parameters, and selected gene expression under heat stress conditions...
2017: PloS One
https://www.readbyqxmd.com/read/29053717/gpr40-partial-agonists-and-agopams-differentiating-effects-on-glucose-and-hormonal-secretions-in-the-rodent
#17
Michele J Pachanski, Melissa E Kirkland, Daniel T Kosinski, Joel Mane, Boonlert Cheewatrakoolpong, Jiyan Xue, Daphne Szeto, Gail Forrest, Corin Miller, Michelle Bunzel, Christopher W Plummer, Harry R Chobanian, Michael W Miller, Sarah Souza, Brande S Thomas-Fowlkes, Aimie M Ogawa, Adam B Weinglass, Jerry Di Salvo, Xiaoyan Li, Yue Feng, Daniel A Tatosian, Andrew D Howard, Steven L Colletti, Maria E Trujillo
GPR40 agonists are effective antidiabetic agents believed to lower glucose through direct effects on the beta cell to increase glucose stimulated insulin secretion. However, not all GPR40 agonists are the same. Partial agonists lower glucose through direct effects on the pancreas, whereas GPR40 AgoPAMs may incorporate additional therapeutic effects through increases in insulinotrophic incretins secreted by the gut. Here we describe how GPR40 AgoPAMs stimulate both insulin and incretin secretion in vivo over time in diabetic GK rats...
2017: PloS One
https://www.readbyqxmd.com/read/29053694/use-of-a-recombinant-mosquito-densovirus-as-a-gene-delivery-vector-for-the-functional-analysis-of-genes-in-mosquito-larvae
#18
Pei-Wen Liu, Jia-Bao Xu, Yun-Qiao Dong, Xiao-Guang Chen, Jin-Bao Gu
In vivo microinjection is the most commonly used gene transfer technique for analyzing the gene functions in individual mosquitoes. However, this method requires a more technically demanding operation and involves complicated procedures, especially when used in larvae due to their small size, relatively thin and fragile cuticle, and high mortality, which limit its application. In contrast, viral vectors for gene delivery have been developed to surmount extracellular and intracellular barriers. These systems have the advantages of easy manipulation, high gene transduction efficiency, long-term maintenance of gene expression, and the ability to produce persistent effects in vivo...
October 6, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29053606/lung-toxicity-of-condensed-aerosol-from-e-cig-liquids-influence-of-the-flavor-and-the-in-vitro-model-used
#19
Rossella Bengalli, Emanuele Ferri, Massimo Labra, Paride Mantecca
The diffusion of e-cigarette (e-CIG) opens a great scientific and regulatory debate about its safety. The huge number of commercialized devices, e-liquids with almost infinite chemical formulations and the growing market demand for a rapid and efficient toxicity screen system that is able to test all of these references and related aerosols. A consensus on the best protocols for the e-CIG safety assessment is still far to be achieved, since the huge number of variables characterizing these products (e.g., flavoring type and concentration, nicotine concentration, type of the device, including the battery and the atomizer)...
October 20, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29053594/chronic-exposure-to-the-fusarium-mycotoxin-deoxynivalenol-impact-on-performance-immune-organ-and-intestinal-integrity-of-slow-growing-chickens
#20
Stephanie S Chen, Yi-Hung Li, Mei-Fong Lin
This study investigates the long-term effects of deoxynivalenol (DON) consumption on avian growth performance, on the proliferation, apoptosis, and DNA damage of spleen cells, and on intestinal integrity. Two hundred and eight 5-day-old black-feathered Taiwan country chickens were fed diets containing 0, 2, 5, and 10 mg/kg of DON for 16 weeks. Body weight gain of male birds in the 2 mg/kg group was significantly lower than that in the 5 mg/kg group. At the end of trial, feeding DON-contaminated diets of 5 mg/kg resulted in heavier spleens...
October 20, 2017: Toxins
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