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https://www.readbyqxmd.com/read/28931177/effects-of-aldosterone-on-chemerin-expression-and-secretion-in-3t3-l1-adipocytes
#1
Junhua Ma, Fei Sun, Jingnan Wang, He Jiang, Jiancan Lu, Xing Wang, Jichen Zhang, Chao Shi, Wen You, Xiangqi Li, Hongling Zhu, Mingjun Gu
Aldosterone plays a pivotal role in the pathogenesis of metabolic syndrome and cardiovascular disease; however, the underlying mechanisms have not been clarified. Chemerin has been characterized as an adipokine with crucial roles in obesity-associated disorders and cardiovascular homeostasis. The aim of the present study was to investigate the direct effects of aldosterone on chemerin expression and secretion in 3T3-L1 adipocytes and to identify the potential signalling pathways involved. Chemerin mRNA levels were measured using real-time PCR, whereas the levels of secreted chemerin in the culture media were determined using ELISA...
September 20, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28930993/confocal-imaging-of-neuropeptide-y-phluorin-a-technique-to-visualize-insulin-granule-exocytosis-in-intact-murine-and-human-islets
#2
Madina Makhmutova, Tao Liang, Herbert Gaisano, Alejandro Caicedo, Joana Almaça
Insulin secretion plays a central role in glucose homeostasis under normal physiological conditions as well as in disease. Current approaches to study insulin granule exocytosis either use electrophysiology or microscopy coupled to the expression of fluorescent reporters. However most of these techniques have been optimized for clonal cell lines or require dissociating pancreatic islets. In contrast, the method presented here allows for real time visualization of insulin granule exocytosis in intact pancreatic islets...
September 13, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28930962/attenuation-of-hemorrhage-associated-lung-injury-by-adjuvant-treatment-with-c23-an-oligopeptide-derived-from-cold-inducible-rna-binding-protein
#3
Fangming Zhang, Weng-Lang Yang, Max Brenner, Ping Wang
BACKGROUND: Hemorrhagic shock (HS) is an important cause of mortality. HS is associated with an elevated incidence of acute lung injury and acute respiratory distress syndrome, significantly contributing to HS morbidity and mortality. Cold-inducible RNA-binding protein (CIRP) is released into the circulation during HS and can cause lung injury. C23 is a CIRP-derived oligopeptide that binds with high affinity to the CIRP receptor and inhibits CIRP-induced phagocyte secretion of TNF-α...
October 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28930560/structural-and-molecular-biology-of-psp94-its-significance-in-prostate-pathophysiology
#4
Jenifer H Anklesaria, Deepa R Mhatre, Smita D Mahale
Prostate secretory protein of 94 amino acids (PSP94), primarily found in the prostatic secretion, was originally isolated and purified from human seminal plasma. PSP94 has several putative biological functions and is considered a marker of prostate cancer (PCa). Here, we review the structural-functional relationships of PSP94, address its fungicidal activity and role as an inhibitor of sperm motility and protection from female immune surveillance, and review its role in tumor suppression. We also review the diagnostic assays that are developed for PSP94 for use in the diagnosis of PCa and use of such tests in the differential diagnosis of PCa from benign prostatic hyperplasia (BPH)...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28930160/human-chorionic-gonadotrophin-as-a-possible-mediator-of-leiomyoma-growth-during-pregnancy-molecular-mechanisms
#5
REVIEW
Veronica Sarais, Greta Chiara Cermisoni, Matteo Schimberni, Alessandra Alteri, Enrico Papaleo, Edgardo Somigliana, Paola Vigano'
Uterine fibroids are the most common gynecologic benign tumors. Studies supporting a strong pregnancy-related growth of leiomyomas generally claimed a crucial role of sex steroid hormones. However, sex steroids are unlikely the unique actors involved as estrogen and progesterone achieve a pick serum concentration in the last trimester while leiomyomas show a typical increase during the first trimester. Given the rapid exponential raise in serum human Chorionic Gonadotrophin (hCG) at the beginning of gestation, we conducted a review to assess the potential role of hCG in the striking growth of leiomyomas during initial pregnancy...
September 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28930140/identification-of-phlogacantholide-c-as-a-novel-adam10-enhancer-from-traditional-chinese-medicinal-plants
#6
Myriam Meineck, Florian Schuck, Sara Abdelfatah, Thomas Efferth, Kristina Endres
Background: Alzheimer's disease is one of the most prevalent dementias in the elderly population with increasing numbers of patients. One pivotal hallmark of this disorder is the deposition of protein aggregates stemming from neurotoxic amyloid-beta peptides. Synthesis of those peptides has been efficiently prevented in AD model mice by activation of an enzyme called alpha-secretase. Therefore, drugs with the capability to increase the expression of this enzyme, named ADAM10, have been suggested as a valuable therapeutic medication...
December 5, 2016: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28929578/horizontal-transfer-of-mir-23a-from-hypoxic-tumor-cell-colonies-can-induce-angiogenesis
#7
T V Sruthi, Lincy Edatt, Grace R Raji, Haritha K, S Sharath Shankar, Vandana Shankar, Vishnu R, Aswini P, V B Sameer Kumar
Neo vessel formation by angiogenesis is an important event during many pathological conditions including cancer, where it is indispensable for tumor growth and survival. Although, various pro-angiogenic cytokines and soluble factors, secreted by tumor cells, have been reported to promote angiogenesis, recent studies have shown regulatory role of exosomes, secreted by tumor cells in the process of angiogenesis. These exosomes are capable of carrying nucleic acids, proteins etc. as their cargo. Under the light of these facts and considering the presence of miRNAs, the non-coding RNAs capable of regulating target gene expression, as one of the major cargos in the exosomes, we investigated, whether exosomes derived from normoxic and hypoxic tumor cell colonies exhibit difference in levels of miR-23∼27∼24 cluster members and if so, to check the significance of their horizontall transfer on the process of angiogenesis...
September 20, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28929087/interactions-of-intestinal-bacteria-with-components-of-the-intestinal-mucus
#8
REVIEW
Jean-Félix Sicard, Guillaume Le Bihan, Philippe Vogeleer, Mario Jacques, Josée Harel
The human gut is colonized by a variety of large amounts of microbes that are collectively called intestinal microbiota. Most of these microbial residents will grow within the mucus layer that overlies the gut epithelium and will act as the first line of defense against both commensal and invading microbes. This mucus is essentially formed by mucins, a family of highly glycosylated protein that are secreted by specialize cells in the gut. In this Review, we examine how commensal members of the microbiota and pathogenic bacteria use mucus to their advantage to promote their growth, develop biofilms and colonize the intestine...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28928907/adipose-derived-stromal-cell-in-regenerative-medicine-a-review
#9
REVIEW
Reza Tabatabaei Qomi, Mohsen Sheykhhasan
The application of appropriate cell origin for utilizing in regenerative medicine is the major issue. Various kinds of stem cells have been used for the tissue engineering and regenerative medicine. Such as, several stromal cells have been employed as treat option for regenerative medicine. For example, human bone marrow-derived stromal cells and adipose-derived stromal cells (ADSCs) are used in cell-based therapy. Data relating to the stem cell therapy and processes associated with ADSC has developed remarkably in the past 10 years...
August 26, 2017: World Journal of Stem Cells
https://www.readbyqxmd.com/read/28928871/twisted-gastrulation-bmp-signaling-modulator-1-regulates-papillary-thyroid-cancer-cell-motility-and-proliferation
#10
Shujun Xia, Ri Ji, Yongmin Xu, Xiaofeng Ni, Yijie Dong, Weiwei Zhan
Bone morphogenetic proteins (BMPs) are growth factors that have important functions in cell proliferation, migration and differentiation. To date, BMP pathway activation has been found in multiple human tumors and is associated with enhanced malignant tumor growth and metastasis. BMP activity is tightly regulated by a family of soluble extracellular secreted BMP modulators. Twisted gastrulation BMP signaling modulator 1 (TWSG1) is a direct BMP regulator that is required for the full signaling activity of BMPs...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28928738/age-stratified-t-cell-responses-in-children-infected-with-mycobacterium-tuberculosis
#11
Alexandra Dreesman, Véronique Corbière, Violette Dirix, Kaat Smits, Sara Debulpaep, Iris De Schutter, Myriam Libin, Mahavir Singh, Anne Malfroot, Camille Locht, Françoise Mascart
Tuberculosis (TB) in young children differs from adult TB in that the risk of rapid progression to active TB (aTB) is higher in children than in adults. The reasons for this increased risk are not fully understood. Early differentiation remains difficult between children at risk to develop aTB from those who will remain healthy and develop a latent TB infection (LTBI). Biomarkers to differentiate aTB from LTBI in children, especially in very young children, are urgently needed. To identify M. tuberculosis-specific functional T cell subsets related to clinical manifestations in children, we enrolled 87 children exposed to M...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28928666/colitis-is-effectively-ameliorated-by-%C3%A2-8-acetonyl-dihydrocoptisine-via-the-xbp1-nf-%C3%AE%C2%BAb-pathway
#12
HaiJing Zhang, GuangMing Song, ZhiHui Zhang, HuaChen Song, XiaoNan Tang, AnJun Deng, WenJie Wang, LianQiu Wu, HaiLin Qin
Ulcerative colitis (UC) is a recurrent, chronic intestinal disease. Available treatments for UC are poor effective and/or cause severe adverse events. X-box binding protein 1 (XBP1) and nuclear factor-κB (NF-κB) have been reported to play important roles in UC. Specifically, deletion or downregulation of XBP1 leads to spontaneous enteritis and results in imbalanced secretion of NF-κB and other proinflammatory cytokines. (±)-8-acetonyl-dihydrocoptisine, i.e., (±)-8-ADC, is a monomer semi-synthesized from coptisine...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28928480/bisoprolol-protects-myocardium-cells-against-ischemia-reperfusion-injury-by-attenuating-unfolded-protein-response-in-rats
#13
Chengcheng Zhang, Songqing He, Yanming Li, Feng Li, Zhengbing Liu, Jing Liu, Jianbin Gong
Bisoprolol (B) exerts potential cardioprotective effects against myocardial ischemia/reperfusion (I/R) injury. Unfolded protein response (UPR) attenuates I/R injury induced apoptosis by reducing oxidative damage and inflammation response. The current study investigated whether the protective effects of bisoprolol resulted from modulating UPR and anti-inflammatory during myocardial I/R condition and elucidated its potential mechanisms. Sprague-Dawley rats were treated with B in the absence or presence of the injected UPR activator dithiothreitol (DTT) and then subjected to myocardial I/R surgery...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28928435/tango7-regulates-cortical-activity-of-caspases-during-reaper-triggered-changes-in-tissue-elasticity
#14
Yunsik Kang, Sarah D Neuman, Arash Bashirullah
Caspases perform critical functions in both living and dying cells; however, how caspases perform physiological functions without killing the cell remains unclear. Here we identify a novel physiological function of caspases at the cortex of Drosophila salivary glands. In living glands, activation of the initiator caspase dronc triggers cortical F-actin dismantling, enabling the glands to stretch as they accumulate secreted products in the lumen. We demonstrate that tango7, not the canonical Apaf-1-adaptor dark, regulates dronc activity at the cortex; in contrast, dark is required for cytoplasmic activity of dronc during salivary gland death...
September 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28928248/carbonic-anhydrase-iii-protects-osteocytes-from-oxidative-stress
#15
Chao Shi, Yuhei Uda, Christopher Dedic, Ehab Azab, Ningyuan Sun, Amira I Hussein, Christopher A Petty, Keertik Fulzele, Maria C Mitterberger-Vogt, Werner Zwerschke, Renata Pereira, Kunzheng Wang, Paola Divieti Pajevic
Osteocytes are master orchestrators of bone remodeling; they control osteoblast and osteoclast activities both directly via cell-to-cell communication and indirectly via secreted factors, and they are the main postnatal source of sclerostin and RANKL (receptor activator of NF-kB ligand), two regulators of osteoblast and osteoclast function. Despite progress in understanding osteocyte biology and function, much remains to be elucidated. Recently developed osteocytic cell lines-together with new genome editing tools-has allowed a closer look at the biology and molecular makeup of these cells...
September 19, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28928212/population-and-whole-genome-sequence-based-characterization-of-invasive-group-a-streptococci-recovered-in-the-united-states-during-2015
#16
Sopio Chochua, Ben J Metcalf, Zhongya Li, Joy Rivers, Saundra Mathis, Delois Jackson, Robert E Gertz, Velusamy Srinivasan, Ruth Lynfield, Chris Van Beneden, Lesley McGee, Bernard Beall
Group A streptococci (GAS) are genetically diverse. Determination of strain features can reveal associations with disease and resistance and assist in vaccine formulation. We employed whole-genome sequence (WGS)-based characterization of 1,454 invasive GAS isolates recovered in 2015 by Active Bacterial Core Surveillance and performed conventional antimicrobial susceptibility testing. Predictions were made for genotype, GAS carbohydrate, antimicrobial resistance, surface proteins (M family, fibronectin binding, T, R28), secreted virulence proteins (Sda1, Sic, exotoxins), hyaluronate capsule, and an upregulated nga operon (encodes NADase and streptolysin O) promoter (Pnga3)...
September 19, 2017: MBio
https://www.readbyqxmd.com/read/28928159/bmp4-induces-m2-macrophage-polarization-and-favors-tumor-progression-in-bladder-cancer
#17
Víctor G Martínez, Carolina Rubio, Mónica Martínez-Fernández, Cristina Segovia, Fernando López-Calderón, Marina Garín, Alicia Teijeira, Ester Munera-Maravilla, Alberto Varas, Rosa Sacedón, Felix Guerrero-Ramos, Felipe Villacampa, Federico de la Rosa, Daniel Castellano, Eduardo López-Collazo, Jesus M Paramio, Ángeles Vicente, Marta Dueñas
PURPOSE: Bladder cancer (BC) is a current clinical and social problem. At diagnosis, most patients present non-muscle invasive tumors, characterized by a high recurrence rate, which could progress to muscle invasive disease and metastasis. Bone morphogenetic protein (BMP)-dependent signaling arising from stromal bladder tissue mediates urothelial homeostasis by promoting urothelial cell differentiation. However, the possible role of BMP ligands in BC is still unclear. EXPERIMENTAL DESIGN: Tumor and normal tissue from 68 patients with urothelial cancer were prospectively collected and analyzed for expression of BMP and macrophage markers...
September 19, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28928140/selenoprotein-t-is-a-novel-ost-subunit-that-regulates-upr-signaling-and-hormone-secretion
#18
Abdallah Hamieh, Dorthe Cartier, Houssni Abid, André Calas, Carole Burel, Christine Bucharles, Cedric Jehan, Luca Grumolato, Marc Landry, Patrice Lerouge, Youssef Anouar, Isabelle Lihrmann
Selenoprotein T (SelT) is a recently characterized thioredoxin-like protein whose expression is very high during development, but is confined to endocrine tissues in adulthood where its function is unknown. We report here that SelT is required for adaptation to the stressful conditions of high hormone level production in endocrine cells. Using immunofluorescence and TEM immunogold approaches, we find that SelT is expressed at the endoplasmic reticulum membrane in all hormone-producing pituitary cell types. SelT knockdown in corticotrope cells promotes unfolded protein response (UPR) and ER stress and lowers endoplasmic reticulum-associated protein degradation (ERAD) and hormone production...
September 19, 2017: EMBO Reports
https://www.readbyqxmd.com/read/28928125/ck2%C3%AE-critically-regulates-thrombopoiesis-and-ca-2-triggered-platelet-activation-in-arterial-thrombosis-in-vivo
#19
Patrick Münzer, Britta Walker-Allgaier, Sascha Geue, Friederike Langhauser, Eva Geuss, David Stegner, Katja Aurbach, Daniela Semeniak, Madhumita Chatterjee, Irene Gonzalez Menendez, Melanie Märklin, Leticia Quintanilla-Martinez, Helmut R Salih, David W Litchfield, Thierry Buchou, Christoph Kleinschnitz, Florian Lang, Bernhard Nieswandt, Irina Pleines, Harald Schulze, Meinrad Gawaz, Oliver Borst
Platelets, anucleated megakaryocyte-derived cells, play a major role in hemostasis and arterial thrombosis. While protein kinase Casein Kinase 2 (CK2) is readily detected in megakaryocytes and platelets, the impact of CK2-dependent signaling on megakaryocyte/platelet (patho-) physiology has remained elusive. The present study explored the impact of the CK2 regulatory β-subunit on platelet biogenesis and activation. Megakaryocyte/platelet-specific genetic deletion of CK2β (ck2β(-/-) ) in mice resulted in a significant macrothrombocytopenia and an increased extramedullar megakaryopoiesis with enhanced proportion of premature platelets...
September 19, 2017: Blood
https://www.readbyqxmd.com/read/28928089/in-vitro-and-in-vivo-studies-supporting-the-therapeutic-potential-of-zp3022-in-diabetes
#20
Jolanta Skarbaliene, Kristoffer T Rigbolt, Keld Fosgerau, Nils Billestrup
GLP-1-gastrin dual agonist ZP3022 has been shown to increase β-cell mass with a concomitant improvement of glycemic control in diabetic mice and rats. Here we tested the in-vitro effects of ZP3022 on β-cell proliferation, islet apoptosis and glucose-stimulated insulin secretion (GSIS) in rat islets of Langerhans. Moreover, gene expression profiling in whole pancreas from Zucker Diabetic Fatty (ZDF) rats was performed to characterize genes differently regulated by short-term treatment with ZP3022. Treatments with exendin-4, gastrin-17 alone or in combination were included in the studies...
September 16, 2017: European Journal of Pharmacology
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