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https://www.readbyqxmd.com/read/28109177/glutamine-synthetase-stabilizes-the-binding-of-glnr-to-nitrogen-fixation-gene-operators
#1
Gabriela de Carvalho Fernandes, Ksenia Hauf, Fernando Hayashi Sant'Anna, Karl Forchhammer, Luciane Maria Pereira Passaglia
Biological nitrogen fixation (BNF) is a high energy demanding process carried out by diazotrophic microorganisms that supply combined nitrogen to the biosphere. The genes related to BNF are strictly regulated, but these mechanisms are poorly understood in Gram-positive bacteria. The transcription factor GlnR was proposed to regulate nitrogen fixation related genes based on Paenibacillus comparative genomics. In order to validate this proposal, we investigated BNF regulatory sequences in Paenibacillus riograndensis SBR5(T) genome...
January 21, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28109167/cell-cycle-tailored-targeting-of-metastatic-melanoma-challenges-opportunities
#2
Nikolas K Haass, Brian Gabrielli
The advent of targeted therapies of metastatic melanoma, such as MAPK pathway inhibitors and immune checkpoint antagonists, has turned dermato-oncology from the 'bad guy' to the 'poster child' in oncology. Current targeted therapies are effective; although here is a clear need to develop combination therapies to delay the onset of resistance. Many anti-melanoma drugs impact on the cell cycle but are also dependent on certain cell cycle phases resulting in cell cycle phase-specific drug insensitivity. Here, we raise the question: Have combination trials been abandoned prematurely as ineffective possibly only because drug scheduling was not optimized? Firstly, if both drugs of a combination hit targets in the same melanoma cell, cell cycle-mediated drug insensitivity should be taken into account when planning combination therapies, timing of dosing schedules and choice of drug therapies in solid tumors...
January 21, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28109163/an-assessment-of-the-overexpression-of-bmp-2-in-transfected-human-osteoblast-cells-stimulated-by-mta-and-biodentine
#3
E M Rodrigues, A L G Cornélio, A S C Fuentes, L P Salles, M Velayutham, C Rossa-Junior, J M Guerreiro-Tanomaru, M Tanomaru-Filho
AIM: To evaluate the effect of MTA and Biodentine on viability, osteogenic differentiation and BMP-2 expression in osteogenic cells. METHODOLOGY: Saos-2 cells were used as a model of osteoblastic cells. Overexpression of BMP2 was induced by transfection of a CMV-driven plasmid construct including the human BMP-2 coding sequence and stably transfected cells were selected. Cell viability was assessed by the mitochondrial dehydrogenase enzymatic (MTT) assay. The bioactivity of the materials was evaluated by the Alkaline Phosphatase (ALP) assay and detection of calcium deposits with Alizarin Red Staining (ARS)...
January 21, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28109153/-chemotherapy-increases-fc%C3%AE-riib-content-in-peripheral-blood-of-the-patients-with-lung-squamous-cell-carcinoma
#4
Jingjing Lu, Xiuqin Cao, Zhiwei Yang
Objective To detect the FcγRIIB content of monocytes and B cells, the concentration of soluble FcγRIIB (sFcγRIIB) and its antibodies in the peripheral blood of patients with lung squamous cell carcinoma (LSCC) before and after chemotherapy. Methods The expression and localization of FcγRIIB on monocytes and B cells were detected by immunofluorescence technique; the expression of FcγRIIB mRNA was examined by quantitative real-time PCR; Western blotting was performed to detect the expression of FcγRIIB protein; the serum concentrations of sFcγRIIB, sFcγRIIB-IgG complex, anti-FcγRIIB autoantibody were determined by ELISA...
February 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28109141/-hydrogen-rich-saline-attenuates-hyperalgesia-and-reduces-cytokines-in-rats-with-post-herpetic-neuralgia-via-activating-autophagy
#5
Hongtao Ma, Hongguang Chen, Aili Dong, Yanyan Wang, Yingxue Bian, Keliang Xie
Objective To investigate the role of autophagy in hydrogen-rich saline attenuating post-herpetic neuralgia (PHN) in rats. Methods A total of 100 male SD rats were randomly divided into the five groups (n=20): control group, PHN group, PHN group treated with hydrogen-rich saline (PHN-H2 group), PHN group treated with hydrogen-rich saline and 3-MA (PHN-H2-3-MA group), PHN group treated with hydrogen-rich saline and rapamycin (PHN-H2-Rap group). PHN models were established by varicella-zoster virus (VZV) inoculation...
February 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28109139/-imiquimod-combined-with-dendritic-cell-vaccine-decreases-treg-proportion-and-enhances-anti-tumor-responses-in-mice-bearing-melanoma
#6
Shurong Ren, Qiubo Wang, Yanli Zhang, Cuixiu Lu, Ping Li, Yumei Li
Objective To investigate the therapeutic effect of Toll-like receptor 7 (TLR7) agonist imiquimod combined with dendritic cell (DC)-based tumor vaccine on melanoma in mice and the potential mechanism. Methods Melanoma-bearing mouse models were established by subcutanous injection of B16-OVA cells into C57BL/6 mice. DCs were isolated from mouse bone marrow and propagated in culture medium with recombinant mouse granulocyte-macrophage colony-stimulating factor (rmGM-CSF) and recombinant mouse interleukin-4 (rmIL-4)...
February 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28109129/vsl-3-probiotic-differently-influence-iec-6-intestinal-epithelial-cell-status-and-function
#7
REVIEW
Benedetta Cinque, Cristina La Torre, Francesca Lombardi, Paola Palumbo, Zoran Evtoski, Silvano Jr Santini, Stefano Falone, Annamaria Cimini, Fernanda Amicarelli, Maria Grazia Cifone
The data here reported introduce the wound-healing assay as a tool for testing probiotics aimed at protecting gastrointestinal mucosal surfaces and to verify the consistency of their manufacturing. At the scope, we compared the in vitro effects of two multi-strain high concentration formulations both commercialized under the same brand VSL#3 but sourced from different production sites (USA and Italy) on a non-transformed small-intestinal epithelial cell line, IEC-6. The effects on cellular morphology, viability, migration, and H2 O2 -induced damage, were assessed before and after the treatment with both VSL#3 formulations...
January 21, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28109110/-effects-of-polyethylene-oxide-on-blood-perfusion-in-the-hind-limbs-of-rats-with-chronic-hindlimb-ischemia
#8
De-Zhong Zheng, Tao Zhou, Dao-Gang Zha
OBJECTIVE: To evaluate the effects of polyethylene oxide (PEO) on blood perfusion in hind limb skeletal muscles in a rat model of chronic hind limb ischemia. METHDOS: Twelve rat models of chronic hind limb ischemia established by unilateral femoral artery ligation were randomized into PEO and control groups (n=6) and treated with intravenous infusion of PEO and saline through the internal jugular vein every other day for 2 weeks. Contrast-enhanced ultrasonography was performed after the treatments to evaluate the blood flow in the skeletal muscles at different time points and blood flow reserve in the ischemic hind limbs on day 28...
January 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28109103/-value-of-diffusion-weighted-imaging-1-h-magnetic-resonance-spectroscopy-and-3d-whole-brain-arterial-spin-labeling-in-the-diagnosis-of-medulloblastoma
#9
Dong-Liang Cheng, Wen-Sheng Wang, Yi-Xin Hu, Meng-Lin Chen, Ge Wen, Li-Na Cheng, Jing Wu, Liu-Qing Yan
OBJECTIVE: To explore the value of diffusion-weighted imaging (DWI), (1)H-magnetic resonance spectroscopy (1H-MRS) and 3D whole-brain arterial spin labeling (3D ASL) in the diagnosis of medulloblastoma in the posterior cranial fossa. METHODS: The magnetic resonance imaging (MRI) findings of 16 patients with pathologically confirmed medulloblastoma in the posterior cranial fossa were analyzed retrospectively. All the patients were examined with plane and enhanced brain MRI scans; 5 patients also underwent examinations with DWI, 12 with MRS, and 5 with 3D ASL...
January 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28109099/-effect-of-hugan-qingzhi-tablets-on-ampk-pathway-activation-and-nf-%C3%AE%C2%BAb-p65-protein-expression-in-the-liver-of-rats-with-nonalcoholic-fatty-liver-disease
#10
Xiao-Rui Yao, Fan Xia, Wai-Jiao Tang, Ben-Jie Zhou
OBJECTIVE: To investigate the effect of Hugan Qingzhi tablets on lipid metabolism and inflammation in rats fed on high-fat diet and explore the underlying mechanisms. METHODS: Sixty male Sprague-Dawley rats were randomly divided into 6 groups, namely HFD group (with high-fat diet and distilled water), control group (with normal diet and distilled water), fenofibrate group (with high-fat diet and treatment with 0.1 g<kg fenofibrate suspension), and low-, moderate- and high-dose Hugan Qingzhi tablet groups (with high-fat diet and treatment with 0...
January 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28109087/cd103-cell-growth-factor-flt3l-enhances-the-efficacy-of-immune-checkpoint-blockades-in-murine-glioblastoma-model
#11
Xiaolin Miao, Yiqi Chen, Ke Hao, Meiqin Zheng, Bingyu Chen, Kaiqiang Li, Ying Wang, Wei Zhang, Yu Zhang, Xiaozhou Mou, Shanshan Jiang, Zhen Wang
Glioblastoma is a lethal disease featured with a high proliferation of tumor cells, excessive angiogenesis, and heavydrug resistance. The overall survival of glioblastoma patients was dismal even with intensive standard care. Recent advantages in immune checkpoint blockades are changing the treatment of cancers. However, the efficacy of immune checkpoint blockades in glioblastoma were unclear. Here, we investigated the roles of CD103<sup>+</sup> cells in regulating the effects of immune checkpoint blockades in glioblastoma mouse models...
January 20, 2017: Oncology Research
https://www.readbyqxmd.com/read/28109077/simultaneous-but-not-consecutive-combination-with-folinate-salts-potentiates-5-fluorouracil-antitumor-activity-in-vitro-and-in-vivo
#12
Antonello Di, Paola Orlandi, Teresa Di, Romano Danesi, Guido Bocci
The combination of folinate salts to 5-fluoruracil (5-FU)-based schedules is an established clinical routine in the landscape of the colorectal cancer treatment. The aim of this study was to investigate the pharmacological differences between the sequential administration of folinate salts (1 h before, as in clinical routine) followed by 5-FU and the simultaneous administration of both drugs. Proliferation and apoptotic assays were performed on human colon cancer cells exposed to 5-FU, calcium (CaLV) or disodium (NaLV) levofolinate or their simultaneous and sequential combination for 24 and 72h...
January 20, 2017: Oncology Research
https://www.readbyqxmd.com/read/28109073/cyclin-dependent-kinase-inhibitor-3-promotes-cancer-cell-proliferation-and-tumorigenesis-in-nasopharyngeal-carcinoma-by-targeting-p27
#13
Huimin Wang, Hexin Chen, Hang Zhou, Wenfa Yu, Zhenmin Lu
Nasopharyngeal carcinoma (NPC) is a common head and neck malignancy with high invasion which arises from the nasopharynx epithelium. Cyclin-dependent kinase inhibitor 3 (CDKN3) belongs to the dual-specificity protein phosphatase family which plays a key role in regulating cell division. Abnormal expression of CDKN3 has been found in numerous types of cancer. In the current study, we explored the possible role of CDKN3 in cell proliferation, invasion ability and radiosensitivity in NPC cells. We reported that CDKN3 was upregulated and P27 was downregulated in NPC tissues and associated with worse patient prognosis...
January 20, 2017: Oncology Research
https://www.readbyqxmd.com/read/28109068/the-impact-of-dermoscopy-on-melanoma-detection-in-the-practice-of-dermatologists-in-europe-results-of-a-pan-european-survey
#14
A M Forsea, P Tschandl, I Zalaudek, V Del Marmol, H P Soyer, G Argenziano, A C Geller
BACKGROUND: Dermoscopy is a widely used technique that can increase the sensitivity and specificity of melanoma detection. Information is lacking on the impact of dermoscopy use on the detection of melanoma in the real-life practice of European dermatologists. OBJECTIVE: To identify factors that influence the benefit of using dermoscopy for increasing melanoma detection and lowering the number of unnecessary biopsies in the practice of European dermatologists. METHODS: We conducted a survey of dermatologists registered in 32 European countries regarding: the demographic and practice characteristics, dermoscopy training and use, opinions on dermoscopy and the self-estimated impact of dermoscopy use on the number of melanomas detected and the number of unnecessary biopsies performed in practice...
January 21, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28109051/shear-induced-platelet-aggregation-and-distribution-of-thrombogenesis-at-stenotic-vessels
#15
Hiroki Kamada, Yohsuke Imai, Masanori Nakamura, Takuji Ishikawa, Takami Yamaguchi
OBJECTIVE: Shear-induced platelet aggregation (SIPA), which is mediated by von Willebrand factor (vWF), is a key mechanism in arterial thrombosis under an abnormally high shear rate of blood flow. We investigated the influence of SIPA on thrombogenesis, focusing on alterations in blood flow at stenotic vessels. METHODS: We carried out a computer simulation of thrombogenesis in stenotic vessels at three different injury positions (i.e., upstream, apex, and downstream of the stenosis) to evaluate the effect of SIPA...
January 21, 2017: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/28109010/lack-of-effects-of-an-equine-chorionic-gonadotropin-ecg-administration-between-days-9-and-15-postpartum-on-reproductive-performance-in-a-holstein-dairy-herd
#16
M Freick, O Passarge, J Weber
Recently, it has been demonstrated that administration of equine chorionic gonadotropin (eCG) in the postpartum period in dairy cows can enhance follicle growth, reduce the interval from calving to first ovulation and increase plasma estradiol concentrations, and, thus, could enhance reproductive performance in a dairy herd when administered on day 6 postpartum. The aim of this study was to investigate the effects of a single dose of eCG between days 9 and 15 postpartum on parameters of reproductive performance in dairy cows...
January 21, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28108999/differential-response-of-scots-pine-seedlings-to-variable-intensity-and-ratio-of-r-and-fr-light
#17
Md Abdur Razzak, Sonali Sachin Ranade, Åsa Strand, M R García-Gil
We investigated the response to increasing intensity of red (R) and far-red (FR) light and to a decrease in R:FR ratio in Pinus sylvestris L. (Scots pine) seedling. The results showed that FR-high irradiance response (FR-HIR) for hypocotyl elongation may be present in Scots pine, and that this response is enhanced by increasing light intensity. However, both hypocotyl inhibition and pigment accumulation were more strongly affected by the R light compared to FR light. This is in contrast to previous reports in Arabidopsis thaliana (L...
January 20, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28108994/magnetic-resonance-imaging-directed-ultrasound-imaging-of-non-mass-enhancement-in-the-breast-outcomes-and-frequency-of-malignancy
#18
Adrienne R Newburg, Chloe M Chhor, Leng Leng Young Lin, Samantha L Heller, Jennifer Gillman, Hildegard K Toth, Linda Moy
OBJECTIVES: This study was performed to determine the frequency, predictors, and outcomes of ultrasound (US) correlates for non-mass enhancement. METHODS: From January 2005 to December 2011, a retrospective review of 5837 consecutive breast magnetic resonance imaging examinations at our institution identified 918 non-mass enhancing lesions for which follow-up or biopsy was recommended. Retrospective review of the images identified 879 of 918 lesions (96%) meeting criteria for non-mass enhancement...
January 21, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28108988/blood-brain-barrier-closure-time-after-controlled-ultrasound-induced-opening-is-independent-of-opening-volume
#19
Meaghan A O'Reilly, Olivia Hough, Kullervo Hynynen
OBJECTIVES: Microbubble-mediated focused ultrasound (US) opening of the blood-brain barrier (BBB) has shown promising results for the treatment of brain tumors and conditions such as Alzheimer disease. Practical clinical implementation of focused US treatments would aim to treat a substantial portion of the brain; thus, the safety of opening large volumes must be investigated. This study investigated whether the opened volume affects the time for the BBB to be restored after treatment...
January 21, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28108976/phenotypic-and-biochemical-alterations-in-relation-to-mt2-gene-expression-in-plantago-ovata-forsk-under-zinc-stress
#20
Paulami Pramanick, Anindita Chakraborty, Sarmistha Sen Raychaudhuri
Plantago ovata Forsk is an annual herb with immense medicinal importance, the seed and husk of which is used in the treatment of chronic constipation, irritable bowel syndrome, diarrhea since ancient times. Zinc, an essential metal, is required by plants as they form important components of zinc finger proteins and also aid in synthesis of photosynthetic pigments such as chlorophyll. However, in excess amount Zn causes chlorosis of leaf and shoot tissues and generate reactive oxygen species. The present study is aimed at investigating the changes in expression levels of MT2 gene in Plantago ovata under zinc stress...
January 20, 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
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