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https://www.readbyqxmd.com/read/29149082/the-biological-properties-of-ogi-surfaces-positively-act-on-osteogenic-and-angiogenic-commitment-of-mesenchymal-stem-cells
#1
Paolo Ghensi, Eriberto Bressan, Chiara Gardin, Letizia Ferroni, Maria Costanza Soldini, Federico Mandelli, Claudio Soldini, Barbara Zavan
Osteogenesis process displays a fundamental role during dental implant osteointegration. In the present work, we studied the influence of Osteon Growth Induction (OGI) surface properties on the angiogenic and osteogenic behaviors of Mesenchymal Stem cells (MSC). MSC derived from dental pulp and HUVEC (Human Umbilical Vein Endothelial Cells) were grown in on OGI titanium surfaces, and cell proliferation and DNA synthesis were evaluated by MTT [3-(4,5-dimethylthiazol-2yl)-2,5-diphenyltetrazolium bromide] test and DNA quantification...
November 17, 2017: Materials
https://www.readbyqxmd.com/read/29145140/fluoxetine-modulates-the-transcription-of-genes-involved-in-serotonin-dopamine-and-adrenergic-signalling-in-zebrafish-embryos
#2
V Cunha, P Rodrigues, M M Santos, P Moradas-Ferreira, M Ferreira
Neurotransmitters pathways in fish and mammals are phylogenetically conserved. Therefore, the environmental presence of psychopharmaceuticals, such as fluoxetine (FLU), are likely to interact with fish serotonergic, dopaminergic and adrenergic systems, affecting their response and associated biological functions. Hence, the present work aimed at evaluating the effects of FLU in the transcription of genes involved in serotonin, dopamine and adrenergic transporters and receptors signalling in early stages of Danio rerio development...
October 27, 2017: Chemosphere
https://www.readbyqxmd.com/read/29144743/diselaginellin-b-an-unusual-dimeric-molecule-from-selaginella-pulvinata-inhibited-metastasis-and-induced-apoptosis-of-smmc-7721-human-hepatocellular-carcinoma-cells
#3
Yuan Cao, Ming Zhao, Yue Zhu, Zhen-Hua Zhu, Lukas Oberer, Jin-Ao Duan
Two new unusual dimeric selaginellins, diselaginellins A and B (1 and 2), along with two known derivatives, selaginellin (3) and selaginellin B (4), were isolated from Selaginella pulvinata. Their structures were elucidated by extensive NMR and high-resolution ESIMS data analysis. Compound 2 displayed apoptosis-inducing and antimetastatic activities against the human hepatocellular carcinoma cell line SMMC-7721. A microarray analysis revealed that genes related to metabolism, angiogenesis, and metastasis were altered by 2...
November 16, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/29143226/aligned-ovine-diaphragmatic-myoblasts-overexpressing-human-connexin-43-seeded-on-poly-l-lactic-acid-scaffolds-for-potential-use-in-cardiac-regeneration
#4
Carlos Sebastián Giménez, Paola Locatelli, Florencia Montini Ballarin, Alejandro Orlowski, Ricardo A Dewey, Milagros Pena, Gustavo Abel Abraham, Ernesto Alejandro Aiello, María Del Rosario Bauzá, Luis Cuniberti, Fernanda Daniela Olea, Alberto Crottogini
Diaphragmatic myoblasts (DMs) are precursors of type-1 muscle cells displaying high exhaustion threshold on account that they contract and relax 20 times/min over a lifespan, making them potentially useful in cardiac regeneration strategies. Besides, it has been shown that biomaterials for stem cell delivery improve cell retention and viability in the target organ. In the present study, we aimed at developing a novel approach based on the use of poly (L-lactic acid) (PLLA) scaffolds seeded with DMs overexpressing connexin-43 (cx43), a gap junction protein that promotes inter-cell connectivity...
November 15, 2017: Cytotechnology
https://www.readbyqxmd.com/read/29141593/bidirectional-alteration-of-cav-1-expression-is-associated-with-mitogenic-conversion-of-its-function-in-gastric-tumor-progression
#5
Byung-Kyu Ryu, Min-Goo Lee, Nam-Hoon Kim, Kil Yeon Lee, Shin-Ju Oh, Jung-Rock Moon, Hyo Jong Kim, Sung-Gil Chi
BACKGROUND: Expression of caveolin-1 (Cav-1) is frequently altered in many human cancers and both tumor suppression and promotion functions of Cav-1 have been suggested based on its expression status. However, it remains unanswered how Cav-1 provokes opposite effects in different cancers or different phases of tumor progression. METHODS: To explore the implication of Cav-1 alteration in gastric tumorigenesis, the expression and mutational status of Cav-1 and its effects on tumor cell growth were characterized...
November 15, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29141038/depot-specific-inflammation-with-decreased-expression-of-atm2-in-white-adipose-tissues-induced-by-high-margarine-lard-intake
#6
Nannan Wang, Jie Guo, Fuding Liu, Mingxia Wang, Chuntao Li, Lihong Jia, Lingling Zhai, Wei Wei, Yinglong Bai
A high-fat diet has been recognized as an important risk factor of obesity, with variable impacts of different fatty acid compositions on the physiological process. To understand the effects of a high-margarine/lard diet, which is a major source of trans fatty acids (TFAs)/ saturated fatty acids (SFAs), elaidic acid as a biomarker of margarine intake was used to screen affected adipokines on mature human adipocytes in vitro. Weaned male Wistar rats were fed a high-fat diet enriched with margarine/lard to generate obesity-prone (OP) and obesity-resistant (OR) models, which were then used to explore the inflammatory responses of depot-specific white adipose tissue...
2017: PloS One
https://www.readbyqxmd.com/read/29140957/beneficial-effects-of-angiotensin-1-7-on-cd34-cells-from-heart-failure-patients
#7
Colleen T Cole-Jeffrey, Carl J Pepine, Michael J Katovich, Maria B Grant, Mohan K Raizada, Sugata Hazra
The dysfunctional nature of CD34 cells from heart failure (HF) patients makes them unsuitable for autologous stem cell therapy. In view of evidence that the vasoprotective axis of the renin-angiotensin system (RAS) improves CD34 cell functions, we hypothesized that CD34 cells from HF patients will be dysfunctional and that Angiotensin-(1-7) [Ang-(1-7)] would improve their function. Peripheral blood was collected from NYHA class II-IV HF patients (n=31) and reference subjects (n=16). CD34 cell numbers from HF patients were reduced by 47% (p<0...
November 8, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/29138967/mice-lacking-egr1-have-impaired-clock-gene-bmal1-oscillation-locomotor-activity-and-body-temperature
#8
Casper Schwartz Riedel, Birgitte Georg, Henrik L Jørgensen, Jens Hannibal, Jan Fahrenkrug
Early growth response transcription factor 1 (EGR1) is expressed in the suprachiasmatic nucleus (SCN) after light stimulation. We used EGR1-deficient mice to address the role of EGR1 in the clock function and light-induced resetting of the clock. The diurnal rhythms of expression of the clock genes BMAL1 and PER1 in the SCN were evaluated by semi-quantitative in situ hybridization. We found no difference in the expression of PER1 mRNA between wildtype and EGR1-deficient mice; however, the daily rhythm of BMAL1 mRNA was completely abolished in the EGR1-deficient mice...
November 14, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/29137980/interaction-of-alpha-synuclein-with-cytogaligin-a-protein-encoded-by-the-proapoptotic-gene-galig
#9
Saïd El Haddad, Amandine Serrano, Thierry Normand, Chloé Robin, Martine Dubois, Fabienne Brule-Morabito, Lucile Mollet, Stéphane Charpentier, Alain Legrand
GALIG, an internal gene to the human galectin-3 gene, encodes two distinct proteins, Mitogaligin and Cytogaligin through translation of a unique mRNA in two overlapping alternative reading frames. When overexpressed GALIG induces apoptosis. In cultured cells, Mitogaligin destabilizes mitochondria membranes through interaction with cardiolipin. Little is known regarding the role of Cytogaligin. This protein displays multiple subcellular localizations; cytosol, nucleus, and mitochondria. We illustrate here that Cytogaligin is also secreted in the extracellular medium...
November 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29134727/a-srna-in-a-reduced-mutualistic-symbiont-genome-regulates-its-own-gene-expression
#10
Margaret W Thairu, Siyuan Cheng, Allison K Hansen
Similar to other nutritional endosymbionts that are obligate for host survival, the mutualistic aphid endosymbiont, Buchnera, has a highly reduced genome with few regulatory elements. Until recently, it was thought that aphid hosts were primarily responsible for regulating their symbiotic relationship. However, we recently revealed that Buchnera displays differential protein regulation, but not mRNA expression. We also identified a number of conserved small RNAs (sRNAs) that are expressed among Buchnera taxa...
November 13, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/29134321/co-occurrence-of-mixed-proteinopathies-in-late-stage-huntington-s-disease
#11
Isabelle St-Amour, Andréanne Turgeon, Claudia Goupil, Emmanuel Planel, Sébastien S Hébert
Accumulating evidence highlights the potential role of mixed proteinopathies (i.e., abnormal protein aggregation) in the development of clinical manifestations of neurodegenerative diseases (NDD). Huntington's disease (HD) is an inherited NDD caused by autosomal-dominant expanded CAG trinucleotide repeat mutation in the gene coding for Huntingtin (Htt). Previous studies have suggested the coexistence of phosphorylated-Tau, α-synuclein (α-Syn) and TAR DNA-binding protein 43 (TDP-43) inclusions in HD. However, definite evidence that HD pathology in humans can be accompanied by other proteinopathies is still lacking...
November 13, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/29133251/immune-response-of-interferon-%C3%AE-inducible-lysosomal-thiol-reductase-gilt-from-chinese-sturgeon-acipenser-sinensis-to-microbial-invasion-and-its-antioxdative-activity-in-lipopolysaccharides-treated-mammalian-dentritic-cells
#12
Xiuling You, Liu Liu, Xiuyu Li, Hejun Du, Dongsong Nie, Xingguo Zhang, Haibing Tong, Mingjiang Wu, Yitian Gao, Zhiyong Liao
Interferon-γ-inducible lysosomal thiol reductase (GILT) plays an important role in the major histocompatibility complex-restricted antigen processing of endocytosed proteins via catalyzing the disulfide bond reduction in the endocytic pathway. Here, the cDNA of Chinese sturgeon (Acipenser sinensis) GILT (CsGILT) was cloned. It contained an open reading frame of 762 nucleotides encoding a protein of 254 amino acids with an estimated molecular weight of 28.1 kDa. The characteristic structural features, including a signature sequence CQHGX2ECX2NX4C, a CXXC motif, two potential N-glycosylation sites, and eight conserved cysteines were detected in the deduced amino acid sequence of CsGILT...
November 10, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29132307/involvement-of-lemdr-an-atp-binding-cassette-protein-gene-in-shikonin-transport-and-biosynthesis-in-lithospermum-erythrorhizon
#13
Yu Zhu, Gui-Hua Lu, Zhuo-Wu Bian, Feng-Yao Wu, Yan-Jun Pang, Xiao-Ming Wang, Rong-Wu Yang, Cheng-Yi Tang, Jin-Liang Qi, Yong-Hua Yang
BACKGROUND: Shikonin is a naphthoquinone secondary metabolite with important medicinal value and is found in Lithospermum erythrorhizon. Considering the limited knowledge on the membrane transport mechanism of shikonin, this study investigated such molecular mechanism. RESULTS: We successfully isolated an ATP-binding cassette protein gene, LeMDR, from L. erythrorhizon. LeMDR is predominantly expressed in L. erythrorhizon roots, where shikonin accumulated. Functional analysis of LeMDR by using the yeast cell expression system revealed that LeMDR is possibly involved in the shikonin efflux transport...
November 13, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/29131258/correlation-of-rgs4-and-p16-expressions-with-pediatric-nephroblastoma-and-its-significance-on-prognosis
#14
X-X Liu, H-F Gong, X-X Zhao
OBJECTIVE: To investigate the correlation of regulator of G-protein signaling 4 (RGS4) and P16 expressions with pediatric nephroblastoma and its significance on prognosis. PATIENTS AND METHODS: A total of 80 children with primary nephroblastoma who underwent surgical resection in our hospital from March 2009 to March 2012 were selected as objects of study. The expressions of RGS4 and P16 in cancer and cancer-adjacent tissues of patients were detected by reverse transcription-polymerase chain reaction (RT-PCR), Western blot and immunohistochemistry...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29130509/arfhpv-e7-oncogene-lncrna-hotair-mir-331-3p-and-its-target-nrp2-form-a-negative-feedback-loop-to-regulate-the-apoptosis-in-the-tumorigenesis-in-hpv-positive-cervical-cancer
#15
Min Zhang, Yinghui Song, Furui Zhai
BACKGROUND: The objective of this study was to explore the role of HOTAIR in the development of cervical cancer, as well as its downstream signaling pathway. METHOD: We conducted computational analysis, luciferase assay to explore downstream of HOTAIR and miR-331-3p. Real-time PCR and western-blot were carried out to detect the relationship among E7, HOTAIR, miR-331-3p, NRP2 and P53. Finally, MTT assay and flow cytometry analysis were performed to validate the effect of E7 and miR-331-3p on cell apoptosis and proliferation...
November 11, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29129630/antibacterial-antifungal-and-anticoagulant-activities-of-chicken-pla2-group-v-expressed-in-pichia-pastoris
#16
Aida Karray, Madiha Bou Ali, Nedia Kharrat, Youssef Gargouri, Sofiane Bezzine
Secretory class V phospholipase A2 (PLA2-V) has been shown to be involved in inflammatory processes in cellular studies, but the biochemical and physical properties of this important enzyme have been unclear. As a first step towards understanding the structure, function and regulation of this PLA2, we report the expression and characterization of PLA2-V from chicken (ChPLA2-V). The ChPLA2-V cDNA was synthesized from chicken heart polyA mRNA by RT-PCR, and an expression construct containing the PLA2 was established...
November 9, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29129044/anti-sema3a-antibody-a-novel-therapeutic-agent-to-suppress-gbm-tumor-growth
#17
Jaehyun Lee, Yong Jae Shin, Kyoungmin Lee, Hee Jin Cho, Jason K Sa, Sang-Yun Lee, Seok-Hyung Kim, Jeongwu Lee, Yeup Yoon, Do-Hyun Nam
Purpose: Glioblastoma (GBM) is classified as one of the most aggressive and lethal brain tumor. Great strides have been made in understanding the genomic and molecular underpinnings of GBM, which translated into development of new therapeutic approaches to combat such deadly disease. However, there are only few therapeutic agents that can effectively inhibit GBM invasion in a clinical framework. In an effort to address such challenges, we have generated anti-SEMA3A monoclonal antibody as a potential therapeutic antibody against GBM progression...
November 10, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/29127005/the-pleckstrin-homology-like-domain-family-member-tdag51-is-temporally-regulated-during-skeletal-muscle-regeneration
#18
Samantha K Coleman, Andrew W Cao, Irena A Rebalka, Gabriel Gyulay, Paige J Chambers, A Russell Tupling, Richard C Austin, Thomas J Hawke
The capacity for skeletal muscle to repair from daily insults as well as larger injuries is a vital component to maintaining muscle health over our lifetime. Given the importance of skeletal muscle for our physical and metabolic well-being, identifying novel factors mediating the growth and repair of skeletal muscle will thus build our foundational knowledge and help lead to potential therapeutic avenues for muscle wasting disorders. To that end, we investigated the expression of T-cell death associated gene 51 (TDAG51) during skeletal muscle repair and studied the response of TDAG51 deficient (TDAG51(-/-)) mice to chemically-induced muscle damage...
November 7, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29126304/sdhc-promoter-methylation-a-novel-pathogenic-mechanism-in-parasympathetic-paragangliomas
#19
Cristóbal Bernardo-Castiñeira, Nuria Valdés, Marta I Sierra, Inés Sáenz-de-Santa-María, Gustavo F Bayón, Raúl F Perez, Agustín F Fernández, Mario F Fraga, Aurora Astudillo, Rafael Menéndez, Belén Fernández, Maribel Del Olmo, Carlos Suarez, María-Dolores Chiara
Context: Germline mutations in the succinate dehydrogenase A, B, C, and D genes (collectively, SDHx) predispose to the development of paragangliomas (PGLs) arising at the parasympathetic or sympathetic neuroendocrine systems. SDHx mutations cause absence of tumoral immunostaining for SDHB. However, negative SDHB-immunostaining has also been found in a subset of PGLs that lack SDHx mutations. Settings: Here, we report the comprehensive molecular characterization of one such a tumor of parasympathetic origin compared with healthy paraganglia and other PGLs with or without SDHx mutations...
November 3, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29122841/hh-gene-participates-in-the-left-right-asymmetry-development-of-amphioxus-by-controlling-cer-expression
#20
Guangwei Hu, Guang Li, Hui Wang, Yiquan Wang
Correct patterning of left-right asymmetry is an important process during the embryonic development of bilaterians. It is known that Hh signaling plays a role in LR asymmetry development of mouse, chicken and sea urchin embryos by regulating Nodal expression. In this study, we reported a novel regulating way of Hh gene in the LR asymmetry development of amphioxus embryos. Our results revealed that Hh(-/-) embryos abolished Cerburs (Cer) transcription and led to bilaterally symmetric expression of Nodal, Lefty and Pitx As a consequence, Hh(-/-) mutants duplicated its left-side structures and lost right-side characters displaying an abnormal bilaterally symmetric body plan...
November 9, 2017: Development
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