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https://www.readbyqxmd.com/read/28330312/isolation-and-screening-of-l-asparaginase-free-of-glutaminase-and-urease-from-fungal-sp
#1
Kruthi Doriya, Devarai Santhosh Kumar
L-Asparaginase is a chemotherapeutic drug used in the treatment of acute lymphoblastic leukaemia (ALL), a malignant disorder in children. L-Asparaginase helps in removing acrylamide found in fried and baked foods that is carcinogenic in nature. L-Asparaginase is present in plants, animals and microbes. Various microorganisms such as bacteria, yeast and fungi are generally used for the production of L-asparaginase as it is difficult to obtain the same from plants and animals. L-Asparaginase from bacteria causes anaphylaxis and other abnormal sensitive reactions due to low specificity to asparagine...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28323988/basement-membrane-laminin-%C3%AE-2-regulates-btb-dynamics-via-its-effects-on-f-actin-and-microtubule-mt-cytoskeletons-via-mtorc1-signaling
#2
Ying Gao, Haiqi Chen, Wing-Yee Lui, Will M Lee, C Yan Cheng
A local axis connects the apical ectoplasmic specialization (apical ES) at the Sertoli-spermatid interface, the basal ES at the blood-testis barrier (BTB), and the basement membrane across the seminiferous epithelium functionally in rat testes. As such, cellular events that take place across the epithelium such as spermiation and BTB remodeling that occur at the apical ES and the basal ES, respectively, at stage VIII of the cycle are coordinated. Herein, laminin α2, a structural component of the basement membrane, was found to regulate BTB dynamics...
January 16, 2017: Endocrinology
https://www.readbyqxmd.com/read/28322028/localization-of-nucleoside-transporters-in-rat-epididymis
#3
David M Klein, Marcus C Harding, Meghan K Crowther, Nathan J Cherrington
The epididymis relies on transporters for the secretion of nucleosides and influence the disposition of nucleoside analogs (NSA). Since these compounds can cross the blood-testis barrier (BTB), it is important to understand if the epididymis reabsorbs NSA drugs. The purpose of this study is to determine the localization of nucleoside transporters expressed within rat epididymis to demonstrate the potential of epididymal reabsorption. Using immunohistochemistry, we determined that equilibrative nucleoside transporter 1 (ENT1) is localized to the basolateral membrane of epithelial cells, ENT2 is expressed in the nucleus of the epithelium and CNT2 is expressed by basal cells...
March 21, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28320131/epigenetic-and-gene-expression-alterations-of-foxp3-in-the-t-cells-of-eae-mouse-model-of-multiple-sclerosis
#4
Ali Noori-Zadeh, Seyed Alireza Mesbah-Namin, Ali Akbar Saboor-Yaraghi
Multiple sclerosis (MS) is a chronic autoimmune disease with demyelination and neurodegeneration of the central nervous system. It has been shown that the regulatory T (Treg) cells are responsible for maintaining tolerance to self-antigens and can suppress the autoimmune process in several animal models such as experimental autoimmune encephalomyelitis (EAE), a mouse model of MS. Recent basic studies have demonstrated that forkhead box P (FOXP3) and BTB domain and CNC homolog 2 (BACH2) are the master transcription factors of these cells playing a pivotal role in the polarization of naïve T cells into Treg cells...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28319066/nucleus-accumbens-associated-protein-1-promotes-glycolysis-and-survival-of-hypoxic-tumor-cells-via-the-hdac4-hif-1%C3%AE-axis
#5
Y Zhang, Y-J Ren, L-C Guo, C Ji, J Hu, H-H Zhang, Q-H Xu, W-D Zhu, Z-J Ming, Y-S Yuan, X Ren, J Song, J-M Yang
Nucleus accumbens-associated protein-1 (NAC1), a nuclear factor of the BTB/POZ gene family, has emerging roles in cancer. In this study, we identified the NAC1-HDAC4-HIF-1α axis as an important pathway in regulating glycolysis and hypoxic adaptation in tumor cells. We show that nuclear NAC1 binds to histone deacetylase type 4 (HDAC4), hindering phosphorylation of HDAC4 at Ser(246) and preventing its nuclear export that leads to cytoplasmic degradation of the deacetylase. Accumulation of HDAC4 in the nuclei results in an attenuation of HIF-1α acetylation, enhancing the stabilization and transcriptional activity of HIF-1α and strengthening adaptive response of cells to hypoxia...
March 20, 2017: Oncogene
https://www.readbyqxmd.com/read/28302185/in-vitro-ruminal-fermentation-characteristics-and-utilisable-cp-supply-of-sainfoin-and-birdsfoot-trefoil-silages-and-their-mixtures-with-other-legumes
#6
A Grosse Brinkhaus, U Wyss, Y Arrigo, M Girard, G Bee, J O Zeitz, M Kreuzer, F Dohme-Meier
The extensive protein degradation occurring during ensiling decreases the nutritive value of silages, but this might be counteracted by tannins. Therefore, silages from two legume species containing condensed tannins (CT) - sainfoin (SF) and birdsfoot trefoil (two cultivars: birdsfoot trefoil, cv. Bull (BTB) and birdsfoot trefoil, cv. Polom) - were compared for their in vitro ruminal fermentation characteristics. The effect of combining them with two CT-free legume silages (lucerne (LU) and red clover (RC)) was also determined...
April 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28298052/allograft-augmentation-of-hamstring-autograft-for-younger-patients-undergoing-anterior-cruciate-ligament-reconstruction
#7
Cale A Jacobs, Jeremy M Burnham, Eric Makhni, Chaitu S Malempati, Eric Swart, Darren L Johnson
BACKGROUND: Younger patients and those with smaller hamstring autograft diameters have been shown to be at significantly greater risk of graft failure after anterior cruciate ligament (ACL) reconstruction. To date, there is no information in the literature about the clinical success and/or cost-effectiveness of increasing graft diameter by augmenting with semitendinosus allograft tissue for younger patients. HYPOTHESIS: Hybrid hamstring grafts are a cost-effective treatment option because of a reduced rate of graft failure...
March 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28288892/mr-image-guided-delivery-of-cisplatin-loaded-brain-penetrating-nanoparticles-to-invasive-glioma-with-focused-ultrasound
#8
Kelsie F Timbie, Umara Afzal, Abhijit Date, Clark Zhang, Ji Song, G Wilson Miller, Jung Soo Suk, Justin Hanes, Richard J Price
Systemically administered chemotherapeutic drugs are often ineffective in the treatment of invasive brain tumors due to poor therapeutic index. Within gliomas, despite the presence of heterogeneously leaky microvessels, dense extracellular matrix and high interstitial pressure generate a "blood-tumor barrier" (BTB), which inhibits drug delivery and distribution. Meanwhile, beyond the contrast MRI-enhancing edge of the tumor, invasive cancer cells are protected by the intact blood-brain barrier (BBB). Here, we tested whether brain-penetrating nanoparticles (BPN) that possess dense surface coatings of polyethylene glycol (PEG) and are loaded with cisplatin (CDDP) could be delivered across both the blood-tumor and blood-brain barriers with MR image-guided focused ultrasound (MRgFUS), and whether this treatment could control glioma growth and invasiveness...
March 11, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28287613/knockdown-of-long-non-coding-rna-xist-increases-blood-tumor-barrier-permeability-and-inhibits-glioma-angiogenesis-by-targeting-mir-137
#9
H Yu, Y Xue, P Wang, X Liu, J Ma, J Zheng, Z Li, Z Li, H Cai, Y Liu
Antiangiogenic therapy plays a significant role in combined glioma treatment. However, poor permeability of the blood-tumor barrier (BTB) limits the transport of chemotherapeutic agents, including antiangiogenic drugs, into tumor tissues. Long non-coding RNAs (lncRNAs) have been implicated in various diseases, especially malignant tumors. The present study found that lncRNA X-inactive-specific transcript (XIST) was upregulated in endothelial cells that were obtained in a BTB model in vitro. XIST knockdown increased BTB permeability and inhibited glioma angiogenesis...
March 13, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28281163/effect-of-mycobacterium-avium-subsp-paratuberculosis-map-infection-on-the-diagnostic-accuracy-for-mycobacterium-bovis-m-bovis-infection-under-field-conditions-in-cattle-belonging-to-low-m-bovis-prevalence-herds
#10
E Raffo, P Steuer, G Monti, M Salgado
Currently, the Chilean authority has implemented a National Eradication Program for bovine tuberculosis (bTB), aimed at controlling and eradicating the disease in Chile. The area under study has a low within-herd prevalence, has a relatively low number of infected herds, and is one of the major milk and beef producing areas in the country. However, so far, no attempts at eradicating the disease have been successful. It has been suggested that the diagnostic tests used were either not sensitive or specific enough...
March 10, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28280455/increasing-of-blood-brain-tumor-barrier-permeability-through-transcellular-and-paracellular-pathways-by-microbubble-enhanced-diagnostic-ultrasound-in-a-c6-glioma-model
#11
Jinlong Zhang, Heng Liu, Xuesong Du, Yu Guo, Xiao Chen, Shunan Wang, Jingqin Fang, Peng Cao, Bo Zhang, Zheng Liu, Weiguo Zhang
Most of the anticancer agents cannot be efficiently delivered into the brain tumor because of the existence of blood-brain tumor barrier (BTB). The objective of this study was to explore the effect of microbubble-enhanced diagnostic ultrasound (MEUS) on the BTB permeability and the possible mechanism. Glioma-bearing rats were randomized into three groups as follows: the microbubble-enhanced continued diagnostic ultrasound (MECUS) group; the microbubble-enhanced intermittent diagnostic ultrasound (MEIUS) group and the control group...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28256087/frequent-downregulation-of-bach2-expression-in-epstein-barr-virus-positive-diffuse-large-b-cell-lymphoma
#12
Mai Noujima-Harada, Katsuyoshi Takata, Tomoko Miyata-Takata, Hiroaki Sakurai, Kazuhiko Igarashi, Etsuro Ito, Keina Nagakita, Kohei Taniguchi, Nobuhiko Ohnishi, Shizuma Omote, Tetsuya Tabata, Yasuharu Sato, Tadashi Yoshino
Diffuse large B-cell lymphoma (DLBCL) is the most common B-cell lymphoma subtypes, and the Epstein-Barr virus (EBV)-positive subtype of DLBCL is known to exhibit a more aggressive clinical behavior than the EBV-negative one. BTB and CNC homology 2 (BACH2) has been highlighted as a tumor suppressor in hematopoietic malignancies; however, the role of BACH2 in EBV-positive DLBCL is unclear. In the present study, BACH2 expression and its significance were studied in 23 EBV-positive and 43 EBV-negative patient samples...
March 2, 2017: Cancer Science
https://www.readbyqxmd.com/read/28252970/delivering-sirna-and-chemotherapeutic-molecules-across-bbb-and-btb-for-intracranial-glioblastoma-therapy
#13
Zhen-Zhen Yang, Wei Gao, Yu-Jie Liu, Ning Pang, Xian-Rong Qi
For aggressive brain glioblastoma, the therapy is significantly impaired by blood-brain barrier (BBB) and blood-tumor barrier (BTB). Choosing more than one target from the pool of tumor-stroma interactions is profoundly beneficial to therapeutic approaches. Thus, a multifunctional liposomal system based on anchoring two receptor-specific and penetrable peptides was designed for the combination delivery of BBB-impermeable siRNA and chemotherapeutic docetaxel to brain glioblastoma. Both macroscopic and microscopic specific distributions and targeting effect of the liposomes in the intracranial glioblastoma were confirmed...
March 2, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28251262/one-stage-revision-acl-reconstruction-after-primary-acl-double-bundle-reconstruction-is-bone-patella-tendon-bone-autograft-reliable
#14
Tomohiro Tomihara, Yusuke Hashimoto, Masatoshi Taniuchi, Junsei Takigami, Changhun Han, Nagakazu Shimada
PURPOSE: The purpose of this study is to assess the results of revision anterior cruciate ligament (ACL) reconstruction after the failure of primary ACL double bundle reconstruction (ACL-DBR). METHODS: Twenty-two knees in 22 patients (group R) that underwent ACL revision surgery using bone-patellar tendon-bone (BTB) autograft after the failure of primary ACL-DBR were included in this study. Intraoperative findings and postoperative knee laxity and clinical outcomes in group R were assessed...
March 1, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28244681/nandrolone-decanoate-interferes-with-testosterone-biosynthesis-altering-blood-testis-barrier-components
#15
Rosario Barone, Alessandro Pitruzzella, Antonella Marino Gammazza, Francesca Rappa, Monica Salerno, Fulvio Barone, Claudia Sangiorgi, Daniela D'Amico, Nicola Locorotondo, Francesca Di Gaudio, Luigi Cipolloni, Valentina Di Felice, Stefania Schiavone, Venerando Rapisarda, Gabriele Sani, Amos Tambo, Francesco Cappello, Emanuela Turillazzi, Cristoforo Pomara
The aim of this study was to investigate whether nandrolone decanoate (ND) use affects testosterone production and testicular morphology in a model of trained and sedentary mice. A group of mice underwent endurance training while another set led a sedentary lifestyle and were freely mobile within cages. All experimental groups were treated with either ND or peanut oil at different doses for 6 weeks. Testosterone serum levels were measured via liquid chromatography-mass spectrometry. Western blot analysis and quantitative real-time PCR were utilized to determine gene and protein expression levels of the primary enzymes implicated in testosterone biosynthesis and gene expression levels of the blood-testis barrier (BTB) components...
February 28, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28237231/epidemiological-investigation-of-bovine-tuberculosis-outbreaks-in-uruguay-2011-2013
#16
Catalina Picasso, Julio Alvarez, Kimberly L VanderWaal, Federico Fernandez, Andres Gil, Scott J Wells, Andres Perez
Bovine tuberculosis (bTB) is a chronic disease of cattle caused by infection with the Mycobacterium bovis. While bTB prevalence in Uruguay has been low (<11 outbreaks/year) for the past 50 years as a consequence of a national control program, annual incidence increased in 2011 through 2013-15, 26 and 16 infected herds each year, raising concerns from livestock stakeholders and the government. The goal of this study was to assess the spatial dynamics of bTB in Uruguay from 2011 to 2013 and the association between bTB and potential demographic and movement risk factors at the herd level using data provided by the Uruguayan Ministry of Livestock, Agriculture, and Fisheries...
March 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28222182/epidemiological-tracing-of-bovine-tuberculosis-in-switzerland-multilocus-variable-number-of-tandem-repeat-analysis-of-mycobacterium-bovis-and-mycobacterium-caprae
#17
Giovanni Ghielmetti, Simone Scherrer, Ute Friedel, Daniel Frei, Dominique Suter, Lukas Perler, Max M Wittenbrink
BACKGROUND: After 15 years of absence, in 2013 bovine tuberculosis (bTB), caused by Mycobacterium (M.) bovis and M. caprae, reemerged in the Swiss dairy cattle population. In order to identify the sources of infection as well as the spread of the agents, molecular-epidemiologic tracing by MIRU-VNTR analysis in combination with spoligotyping was performed. A total of 17 M. bovis and 7 M. caprae isolates were cultured from tuberculous bovine lymph nodes and analyzed with a set of 49 genetic markers by using automated capillary electrophoresis...
2017: PloS One
https://www.readbyqxmd.com/read/28210646/pain-assessment-after-anterior-cruciate-ligament-reconstruction-bone-patellar-tendon-bone-versus-hamstring-tendon-autograft
#18
Kelechi R Okoroha, Robert A Keller, Edward K Jung, Lafi Khalil, Nathan Marshall, Patricia A Kolowich, Vasilios Moutzouros
BACKGROUND: Anterior cruciate ligament (ACL) reconstruction is a common outpatient procedure that is accompanied by significant postoperative pain. PURPOSE: To determine differences in acute pain levels between patients undergoing ACL reconstruction with bone-patellar tendon-bone (BTB) versus hamstring tendon (HS) autograft. STUDY DESIGN: Cohort study; Level of evidence, 2. METHODS: A total of 70 patients who underwent primary ACL reconstruction using either BTB or HS autografts consented to participate...
December 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28209138/using-whole-genome-sequencing-to-investigate-transmission-in-a-multi-host-system-bovine-tuberculosis-in-new-zealand
#19
Joseph Crispell, Ruth N Zadoks, Simon R Harris, Brent Paterson, Desmond M Collins, Geoffrey W de-Lisle, Paul Livingstone, Mark A Neill, Roman Biek, Samantha J Lycett, Rowland R Kao, Marian Price-Carter
BACKGROUND: Bovine tuberculosis (bTB), caused by Mycobacterium bovis, is an important livestock disease raising public health and economic concerns around the world. In New Zealand, a number of wildlife species are implicated in the spread and persistence of bTB in cattle populations, most notably the brushtail possum (Trichosurus vulpecula). Whole Genome Sequenced (WGS) M. bovis isolates sourced from infected cattle and wildlife across New Zealand were analysed. Bayesian phylogenetic analyses were conducted to estimate the substitution rate of the sampled population and investigate the role of wildlife...
February 16, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28194548/investigation-of-intra-herd-spread-of-mycobacterium-caprae-in-cattle-by-generation-and-use-of-a-whole-genome-sequence
#20
S Broeckl, S Krebs, A Varadharajan, R K Straubinger, H Blum, M Buettner
Single nucleotide polymorphisms (SNPs) calculated from whole genome sequencing (WGS) are ideally suited to study evolutionary relationships of pathogens and their epidemiology. Mycobacterium caprae infections have been documented frequently in cattle and red deer along the Bavarian and Austrian Alps during the last decade. However, little is still known about the transmission within cattle holdings and possible alterations of the genomes of M. caprae during such events. The aim of this study was to study the molecular epidemiology of bovine tuberculosis (bTB) in selected herds based on isolate-specific genome-wide SNPs and to perform a phylogenetic network analysis...
February 13, 2017: Veterinary Research Communications
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