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https://www.readbyqxmd.com/read/28735523/histochemistry-and-immunolocalisation-of-glucokinin-in-antidiabetic-plants-used-in-traditional-mexican-medicine
#1
Guillermo Laguna-Hernández, Carlos A Rio-Zamorano, Itzel G Meneses-Ochoa, Alicia E Brechú-Franco
Mexico is a megadiverse country that has 3,600 to 4,000 species of medicinal plants, of which approximately 800 are used to treat conditions related to diabetes mellitus (DM). DM is a chronic degenerative disease of energy metabolism that exists as two types: type 1 (DM1) and type 2 (DM2). DM is considered a public health problem that affects 7% of the Mexican population older than 20 years. DM is clinically controlled with hypoglycaemic drugs, alpha-glucosidase inhibitors, insulin secretion stimulants or the direct application of insulin...
June 21, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/28735521/myd88-erk-nfkb%C3%A2-pathways-and-pro-inflammatory-cytokines-release-in-periodontal-ligament-stem-cells-stimulated-by-porphyromonas%C3%A2-gingivalis
#2
Francesca Diomede, Maria Zingariello, Marcos F X B Cavalcanti, Ilaria Merciaro, Jacopo Pizzicannella, Natalia De Isla, Sergio Caputi, Patrizia Ballerini, Oriana Trubiani
The present study was aimed at investigating whether human Periodontal Ligament Stem Cells (hPDLSCs) were capable of sensing and reacting to lipopolysaccharide from Porphyromonas gingivalis (LPS-G) which is widely recognized as a major pathogen in the development and progression of periodontitis. At this purpose hPDLCs were stimulated with 5 μg/mL LPS-G various times and the expression of toll-like receptor 4 (TLR4) was evaluated. Toll-like receptors (TLRs) play an essential role in innate immune signaling in response to microbial infections, and in particular TLR4, type-I transmembrane proteins, has been shown recognizing LPS-G...
May 24, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/28734904/identifying-novel-members-of-the-wntless-interactome-through-genetic-and-candidate-gene-approaches
#3
Jessica Petko, Trevor Tranchina, Goral Patel, Robert Levenson, Stephanie Justice-Bitner
Wnt signaling is an important pathway that regulates several aspects of embryogenesis, stem cell maintenance, and neural connectivity. We have recently determined that opioids decrease Wnt secretion, presumably by inhibiting the recycling of the Wnt trafficking protein Wntless (Wls). This effect appears to be mediated by protein-protein interaction between Wls and the mu-opioid receptor (MOR), the primary cellular target of opioid drugs. The goal of this study was to identify novel protein interactors of Wls that are expressed in the brain and may also play a role in reward or addiction...
July 19, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28734897/exploiting-helminth-host-interactomes-through-big-data
#4
REVIEW
Javier Sotillo, Rafael Toledo, Jason Mulvenna, Alex Loukas
Helminths facilitate their parasitic existence through the production and secretion of different molecules, including proteins. Some helminth proteins can manipulate the host's immune system, a phenomenon that is now being exploited with a view to developing therapeutics for inflammatory diseases. In recent years, hundreds of helminth genomes have been sequenced, but as a community we are still taking baby steps when it comes to identifying proteins that govern host-helminth interactions. The information generated from genomic, immunomic, and proteomic studies, as well as from cutting-edge approaches such as proteogenomics, is leading to a substantial volume of big data that can be utilised to shed light on fundamental biology and provide solutions for the development of bioactive-molecule-based therapeutics...
July 19, 2017: Trends in Parasitology
https://www.readbyqxmd.com/read/28734802/co-transplantation-of-mesenchymal-and-neural-stem-cells-and-overexpressing-stromal-derived-factor-1-for-treating-spinal-cord-injury
#5
Andrew N Stewart, Griffin Kendziorski, Zachary M Deak, Dara J Brown, Matthew N Fini, Katherine L Copely, Julien Rossignol, Gary L Dunbar
Genetic engineering of mesenchymal stem cells (MSCs) and neuronal stem cells (NSCs) has been used to treat spinal cord injuries (SCI). As a mechanism of therapy, MSCs secrete high amounts of anti-inflammatory cytokines and trophic factors, while NSCs can differentiate into neuronal lineages and aid in tissue replacement. Additionally, the forced overexpression of secreted proteins can enhance the secretome of transplanted cells, which can increase therapeutic efficacy. This study utilized a combinational treatment consisting of MSCs, NSCs, and the forced overexpression of the chemokine stromal-derived factor-1 (SDF-1) from MSCs (SDF-1-MSCs), to treat a rat model of SCI...
July 19, 2017: Brain Research
https://www.readbyqxmd.com/read/28734801/sex-specific-differences-in-the-modulation-of-growth-differentiation-factor-15-gdf15-by-hyperoxia-in-vivo-and-in-vitro-role-of-hif-1%C3%AE
#6
Yuhao Zhang, Weiwu Jiang, Lihua Wang, Krithika Lingappan
Male premature neonates are more susceptible than females to the development of bronchopulmonary dysplasia (BPD). The reasons underlying sexually dimorphic outcomes in premature neonates are not known. GDF15 (Growth and differentiation factor 15) is a secreted cytokine and plays a role in cell proliferation, apoptosis, and angiogenesis. In this study, we sought to elucidate the sex-specific expression of Gdf15 in the lung in vivo in neonatal hyperoxic lung injury and its regulation by Hif-1α, and to delineate the differences in GDF15 expression in male and female human umbilical venous endothelial cells in an in vitro model of oxygen toxicity...
July 19, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28734180/bottom-up-assembly-of-salivary-gland-microtissues-for-assessing-myoepithelial-cell-function
#7
Tugba Ozdemir, Padma Pradeepa Srinivasan, Daniel R Zakheim, Daniel A Harrington, Robert L Witt, Mary C Farach-Carson, Xinqiao Jia, Swati Pradhan-Bhatt
Myoepithelial cells are flat, stellate cells present in exocrine tissues including the salivary glands. While myoepithelial cells have been studied extensively in mammary and lacrimal gland tissues, less is known of the function of myoepithelial cells derived from human salivary glands. Several groups have isolated tumorigenic myoepithelial cells from cancer specimens, however, only one report has demonstrated isolation of normal human salivary myoepithelial cells needed for use in salivary gland tissue engineering applications...
July 14, 2017: Biomaterials
https://www.readbyqxmd.com/read/28733866/inhibitory-effect-and-mechanism-of-mesenchymal-stem-cells-on-melanoma-cells
#8
J Zhang, L Hou, D Zhao, M Pan, Z Wang, H Hu, J He
PURPOSE: To explore the inhibitory effect and mechanism of MSCs on melanoma proliferation. METHODS: The inhibitory effect of MSCs on melanoma A375 cells was detected by co-culture and conditioned medium (CM) experiments using MTT method. The cell cycle was analyzed by flow cytometry. Then, Western Blot experiment detected the expression of proteins related to NF-κB signaling in A375 cells. The expression of IL-1Ra in MSCs was proved by RT-PCR. The over-expression and silencing vector pcDNA3...
July 21, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28733553/exosomal-tetraspanins-mediate-cancer-metastasis-by-altering-host-microenvironment
#9
Jun Lu, Jun Li, Shuo Liu, Teng Wang, Alessandro Ianni, Eva Bober, Thomas Braun, Rong Xiang, Shijing Yue
The metastases of malignant tumors develop through a cascade of events. The establishment of a pre-metastatic micro-environment is initiated by communication between tumors and host. Exosomes come into focus as the most potent intercellular communicators playing a pivotal role in this process. Cancer cells release exosomes into the extracellular environment prior to metastasis. Tetraspanin is a type of 4 times transmembrane proteins. It may be involved in cell motility, adhesion, morphogenesis, as well as cell and vesicular membrane fusion...
July 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28733520/the-ketogenic-diet-is-not-feasible-as-a-therapy-in-a-cd-1-nu-nu-mouse-model-of-renal-cell-carcinoma-with-features-of-stauffer-s-syndrome
#10
Silvia Vidali, Sepideh Aminzadeh-Gohari, René Günther Feichtinger, Renaud Vatrinet, Andreas Koller, Felix Locker, Tricia Rutherford, Maura O'Donnell, Andrea Stöger-Kleiber, Bridget Lambert, Thomas Klaus Felder, Wolfgang Sperl, Barbara Kofler
The ketogenic diet (KD), a high-fat low-carbohydrate diet, has shown some efficacy in the treatment of certain types of tumors such as brain tumors and neuroblastoma. These tumors are characterized by the Warburg effect. Because renal cell carcinoma (RCC) presents similar energetic features as neuroblastoma, KD might also be effective in the treatment of RCC. To test this, we established xenografts with RCC 786-O cells in CD-1 nu/nu mice and then randomized them to a control diet or to KDs with different triglyceride contents...
July 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28733350/adiponectin-limits-differentiation-and-trophoblast-invasion-in-human-endometrial-cells
#11
Fabien Duval, Esther Dos Santos, Hadia Moindjie, Valérie Serazin, Nelly Swierkowski-Blanchard, François Vialard, Marie-Noëlle Dieudonné
Successful human embryo implantation requires a proper differentiation of endometrial stromal cells (ESCs) into decidual cells, during a process called decidualization. ESCs express specific molecules, as prolactin, insulin-like growth factor-binding protein-1 (IGFBP-1), and connexin-43. Decidual cells are also involved in the control of trophoblast invasion, by secreting various factors, as matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs). Adiponectin is an adipokine with insulin-sensitizing, anti-inflammatory, and anti-proliferative effects...
July 21, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28733348/molecular-forms-of-ruminant-bmp15-and-gdf9-and-putative-interactions-with-receptors
#12
Derek A Heath, Janet Pitman, Kenneth P McNatty
Bone morphogenetic factor 15 (BMP15) and growth differentiation factor 9 (GDF9) are oocyte-secreted factors with demonstrable effects on ovarian follicular development and ovulation-rate. However, the molecular forms of BMP15 and GDF9 produced by oocytes remains unclear. The aims herein, using Western blotting (WB) procedures with specific monoclonal antibodies (mabs), were to identify the molecular forms of BMP15 and GDF9 synthesised and secreted by isolated ovine (o) and bovine (b) oocytes in vitro. The mabs were known to recognise the biological forms of BMP15 or GDF9 since they had previously been shown to inhibit their bioactivities in vitro and in vivo...
July 21, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28733286/the-regulator-ldhr-and-the-d-lactate-dehydrogenase-ldha-of-burkholderia-multivorans-play-a-role-in-carbon-overflow-and-in-planktonic-cellular-aggregates-formation
#13
Inês N Silva, Marcelo J Ramires, Lisa A Azevedo, Ana R Guerreiro, Andreia C Tavares, Jörg D Becker, Leonilde M Moreira
LysR-type transcriptional regulators (LTTR) are the most commonly found regulators in Burkholderia cepacia complex, comprising opportunistic pathogens causing chronic respiratory infections in cystic fibrosis (CF) patients. Despite LTTRs being global regulators of pathogenicity in several bacteria, few have been characterized in Burkholderia Here, we showed that gene ldhR of B. multivorans encoding a LTTR is co-transcribed with ldhA encoding a d-lactate dehydrogenase, and evaluate their implication in virulence traits like exopolysaccharide (EPS) synthesis and biofilm formation...
July 21, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28733198/the-role-of-intrinsic-disorder-and-dynamics-in-the-assembly-and-function-of-the-type-ii-secretion-system
#14
REVIEW
Shuang Gu, Vladimir E Shevchik, Rosie Shaw, Richard W Pickersgill, James A Garnett
Many Gram-negative commensal and pathogenic bacteria use a type II secretion system (T2SS) to transport proteins out of the cell. These exported proteins or substrates play a major role in toxin delivery, maintaining biofilms, replication in the host and subversion of host immune responses to infection. We review the current structural and functional work on this system and argue that intrinsically disordered regions and protein dynamics are central for assembly, exo-protein recognition, and secretion competence of the T2SS...
July 18, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28732070/characterization-of-human-enterovirus71-virus-like-particles-used-for-vaccine-antigens
#15
Dandan Zhao, Bo Sun, Shiyang Sun, Bin Fu, Chuntian Liu, Dawei Liu, Yanfei Chu, Youlei Ma, Lu Bai, Yongge Wu, Yan Zhou, Weiheng Su, Ali Hou, Linjun Cai, Fei Xu, Wei Kong, Chunlai Jiang
Human enterovirus 71 (EV71) is a major causative pathogen of hand, foot and mouth disease (HFMD) and has caused outbreaks with significant mortality among young children in the Asia-Pacific region in recent years. Towards developing a vaccine for this disease, we have expressed and purified EV71 virus-like particles (VLPs), which resemble the authentic virus in appearance, capsid structure and protein sequence, from insect cells (Sf9) using a multistep chromatography process. We demonstrated intracellular localization of the VLPs in host cells by in situ immunogold detection, electron microscopy and immunofluorescence...
2017: PloS One
https://www.readbyqxmd.com/read/28731198/gsk-3%C3%AE-inhibition-suppresses-instability-induced-osteolysis-by-a-dual-action-on-osteoblast-and-osteoclast-differentiation
#16
Mehdi Amirhosseini, Rune Vinther Madsen, K Jane Escott, Mathias Bostrom, F Patrick Ross, Anna Fahlgren
Currently, there are no medications available to treat aseptic loosening of orthopedic implants. Using osteoprotegerin fusion protein (OPG-Fc), we previously blocked instability-induced osteoclast differentiation and peri-prosthetic osteolysis. Wnt/β-catenin signaling, which regulates OPG secretion from osteoblasts, also modulates the bone tissue response to mechanical loading. We hypothesized that activating Wnt/β-catenin signaling by inhibiting glycogen synthase kinase-3β (GSK-3β) would reduce instability-induced bone loss through regulation of both osteoblast and osteoclast differentiation...
July 21, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28731172/comparison-of-the-neuronal-differentiation-abilities-of-bone-marrow%C3%A2-derived-and-adipose-tissue%C3%A2-derived-mesenchymal-stem-cells
#17
Yani Zheng, Chao Huang, Fang Liu, Haiyan Lin, Xiangqun Yang, Zhiying Zhang
Bone marrow‑derived mesenchymal stem cells (BMSCs) and adipose tissue‑derived mesenchymal stem cells (ADSCs) are able to differentiate into neuron‑like cells when exposed to small molecule compounds, however the specific differences in their neuronal differentiation abilities remain to be fully elucidated. The present study aimed to compare the neuronal differentiation abilities of BMSCs and ADSCs. BMSCs and ADSCs from the same Sprague Dawley rats were isolated and cultured for use. The proliferation capacity was revealed using a cell counting method...
July 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28731171/protective-role-of-pollen-typhae-total-flavone-against-the-palmitic-acid-induced-impairment-of-glucose-stimulated-insulin-secretion-involving-gpr40-signaling-in-ins-1-cells
#18
Xiao-Tao Feng, Hui-Ming Duan, Shuang-Lei Li
Prolonged elevated levels of free fatty acids (FFAs) contribute to the impairment of insulin secretion function of pancreatic β cells, a hallmark of type 2 diabetes, which is partly attributed to the dysfunction of G-protein-coupled receptor 40 (GPR40) signaling. Pollen Typhae total flavone (PTF), an extract from a Chinese herbal medicine named Pollen Typhae, has been reported to effectively treat type 2 diabetes, but the underlying mechanisms remain to be fully elucidated. In the present study, palmitic acid (PA), a saturated fatty acid, severely impaired glucose-stimulated insulin secretion (GSIS) in a time-dependent manner in INS-1 cells, and PTF treatment prevented the impairment in a dose-dependent manner...
July 18, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28730525/identification-of-a-seed-coat-specific-promoter-fragment-from-the-arabidopsis-mucilage-modified4-gene
#19
Gillian H Dean, Zhaoqing Jin, Lin Shi, Elahe Esfandiari, Robert McGee, Kylie Nabata, Tiffany Lee, Ljerka Kunst, Tamara L Western, George W Haughn
The Arabidopsis seed coat-specific promoter fragment described is an important tool for basic and applied research in Brassicaceae species. During differentiation, the epidermal cells of the Arabidopsis seed coat produce and secrete large quantities of mucilage. On hydration of mature seeds, this mucilage becomes easily accessible as it is extruded to form a tightly attached halo at the seed surface. Mucilage is composed mainly of pectin, and also contains the key cell wall components cellulose, hemicellulose, and proteins, making it a valuable model for studying numerous aspects of cell wall biology...
July 20, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28730512/nlrp3-deletion-inhibits-the-non-alcoholic-steatohepatitis-development-and-inflammation-in-kupffer-cells-induced-by-palmitic-acid
#20
Can Cai, Xiwen Zhu, Peizhi Li, Jinzheng Li, Jianping Gong, Wei Shen, Kun He
The cleavage and secretion of pro-inflammatory cytokines IL-1β and IL-18 is regulated by NLRP3 (NACHT, LRR, and PYD domain-containing protein 3) inflammasome activation. Kupffer cells (KCs) are implicated in the pathogenesis of various liver diseases, such as non-alcoholic fatty liver disease (NAFLD), alcoholic liver disease, and liver fibrosis. However, the role of NLRP3 played in the non-alcoholic steatohepatitis (NASH) has yet to be evaluated. In the present study, methionine-choline-deficient (MCD) diet was used to establish the mice NASH model...
July 20, 2017: Inflammation
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