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https://www.readbyqxmd.com/read/28323952/randomized-controlled-trial-of-a-mufa-or-fiber-rich-diet-on-hepatic-fat-in-pre-diabetes
#1
Isabel Errazuriz, Simmi Dube, Michael Slama, Roberto Visentin, Sunita Nayar, Helen O'Connor, Claudio Cobelli, Swapan Kumar Das, Ananda Basu, Walter Karl Kremers, John Port, Rita Basu
Context: Increased prevalence of type 2 diabetes mellitus and prediabetes worldwide has been attributed, at least in part, to a modern lifestyle, in particular, to an unhealthy diet. Objective: To evaluate whether 12 weeks of high MUFA or fiber-rich weight maintenance diet lowers hepatic fat and improves glucose tolerance in people with prediabetes. Design: Subjects underwent a [6, 6-2H2] labeled 75 g oral glucose tolerance test to estimate hepatic insulin sensitivity (Siliver) along with measurement of liver fat fraction (LFF) using magnetic resonance spectroscopy before and after intervention...
March 6, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323879/mir-181b-regulates-vascular-stiffness-age-dependently-in-part-by-regulating-tgf-%C3%AE-signaling
#2
Daijiro Hori, Brittany Dunkerly-Eyring, Yohei Nomura, Debjit Biswas, Jochen Steppan, Jorge Henao-Mejia, Hideo Adachi, Lakshmi Santhanam, Dan E Berkowitz, Charles Steenbergen, Richard A Flavell, Samarjit Das
BACKGROUND: Endothelial dysfunction and arterial stiffening play major roles in cardiovascular diseases. The critical role for the miR-181 family in vascular inflammation has been documented. Here we tested whether the miR-181 family can influence the pathogenesis of hypertension and vascular stiffening. METHODS AND RESULTS: qPCR data showed a significant decrease in miR-181b expression in the aorta of the older mice. Eight miR-181a1/b1-/- mice and wild types (C57BL6J:WT) were followed weekly for pulse wave velocity (PWV) and blood pressure measurements...
2017: PloS One
https://www.readbyqxmd.com/read/28318770/expression-of-cathepsin-s-in-bcg-converts-it-into-a-pro-apoptotic-and-highly-immunogenic-strain
#3
Alice Lau, Vijender Singh, Hafid Soualhine, Zakaria Hmama
BACKGROUND: BCG vaccine, introduced almost 100years ago, is the only option to prevent TB disease. It effectively protects newborns from meningeal TB but fails to prevent adult pulmonary TB. TB kills 1.3million people annually in areas where BCG vaccination is widely practiced. Thus, more effective TB vaccines are urgently needed. Others and we have shown that BCG mimics features of virulent M. tuberculosis, in particular attenuation of essential macrophage functions such as phagosome maturation and antigen presentation...
March 16, 2017: Vaccine
https://www.readbyqxmd.com/read/28316163/-effects-of-silencing-smad-ubiquitination-regulatory-factor-2-on-the-function-of-human-hypertrophic-scar-derived-fibroblasts
#4
Z Zhang, F Kuang, C L Liu, B Chen, W B Tang, X J Li
Objective: To explore the effects of silencing Smad ubiquitination regulatory factor 2 (Smurf2) on the secretion of transforming growth factor beta 1 (TGF-β(1)), alpha-smooth muscle actin (α-SMA), and collagen type Ⅰ by human hypertrophic scar-derived fibroblasts. Methods: The human normal skin-derived fibroblasts and hypertrophic scar-derived fibroblasts were cultured with explant culture technique from the normal skin and hypertrophic scar tissue, which was obtained from 9 patients with hypertrophic scars after burn...
March 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28315462/implications-of-cerebrovascular-atp-binding-cassette-transporter-g1-abcg1-and-apolipoprotein-m-in-cholesterol-transport-at-the-blood-brain-barrier
#5
Alexandra Carmen Kober, Anil Paul Chirackal Manavalan, Carmen Tam-Amersdorfer, Andreas Holmér, Ahmed Saeed, Elham Fanaee Danesh, Martina Zandl, Nicole Maria Albrecher, Ingemar Björkhem, Gerhard M Kostner, Björn Dahlbäck, Ute Panzenboeck
Impaired cholesterol/lipoprotein metabolism is linked to neurodegenerative diseases such as Alzheimer's disease (AD). Cerebral cholesterol homeostasis is maintained by the highly efficient blood-brain barrier (BBB) and flux of the oxysterols 24(S)-hydroxycholesterol and 27-hydroxycholesterol, potent liver-X-receptor (LXR) activators. HDL and their apolipoproteins are crucial for cerebral lipid transfer, and loss of ATP binding cassette transporters (ABC)G1 and G4 results in toxic accumulation of oxysterols in the brain...
March 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28315427/histologic-features-of-stromogenic-carcinoma-of-the-prostate-carcinomas-with-reactive-stroma-grade-3
#6
Andrea Diaz De Vivar, Mohammad Sayeeduddin, David Rowley, Antonio Cubilla, Brian Miles, Dov Kadmon, Gustavo Ayala
Prostatic carcinoma, like many other carcinomas, generates a stromal reaction. This phenomenon is well established in the scientific literature. The normal parenchymal smooth muscle phenotype switches to a myofibroblastic phenotype in response to the presence of cancer cells, with an expansion of the extracellular matrix compartment. The amount of reactive stroma is a predictor of biochemical recurrence in both radical prostatectomies and biopsies. It is a predictor of prostate cancer specific death in prostatectomies...
March 14, 2017: Human Pathology
https://www.readbyqxmd.com/read/28314735/non-alcoholic-fatty-liver-disease-and-its-relationship-with-cardiovascular-disease-and-other-extrahepatic-diseases
#7
REVIEW
Leon A Adams, Quentin M Anstee, Herbert Tilg, Giovanni Targher
Key physiological functions of the liver, including glucose and lipid metabolism, become disturbed in the setting of non-alcoholic fatty liver disease (NAFLD) and may be associated with a systemic inflammatory 'milieu' initiated in part by liver-secreted cytokines and molecules. Consequently, the pathophysiological effects of NAFLD extend beyond the liver with a large body of clinical evidence demonstrating NAFLD to be independently associated with both prevalent and incident cardiovascular disease (CVD), chronic kidney disease (CKD) and type 2 diabetes mellitus (T2DM)...
March 17, 2017: Gut
https://www.readbyqxmd.com/read/28303514/euglycemic-ketosis-in-patients-with-type-2-diabetes-on-sglt2-inhibitor-therapy-an-emerging-problem-and-solutions-offered-by-diabetes-technology
#8
A Pfützner, D Klonoff, L Heinemann, N Ejskjaer, J Pickup
Diabetic ketoacidosis is an infrequent but life-threatening acute complication of diabetes, affecting predominantly patients with type 1 diabetes, children, and pregnant women, where ketosis is usually associated with marked hyperglycemia. Recently, an increasing number of cases have been reported of euglycemic diabetic ketoacidosis in patients with type 2 diabetes receiving sodium-glucose cotransporter 2 inhibitor treatment in routine practice. There is a minor, but not negligible diabetic ketoacidosis risk associated with this drug class, which was not seen in randomized clinical trials...
March 17, 2017: Endocrine
https://www.readbyqxmd.com/read/28302169/two-novel-lhx3-mutations-in-patients-with-combined-pituitary-hormone-deficiency-including-cervical-rigidity-and-sensorineural-hearing-loss
#9
Khushnooda Ramzan, Bassam Bin-Abbas, Lolwa Al-Jomaa, Rabab Allam, Mohammed Al-Owain, Faiqa Imtiaz
BACKGROUND: Congenital combined pituitary hormone deficiency (CPHD) is a rare heterogeneous group of conditions. CPHD-type 3 (CPHD3; MIM# 221750) is caused by recessive mutations in LHX3, a LIM-homeodomain transcription factor gene. The isoforms of LHX3 are critical for pituitary gland formation and specification of the anterior pituitary hormone-secreting cell types. They also play distinct roles in the development of neuroendocrine and auditory systems. CASE PRESENTATION: Here, we summarize the clinical, endocrinological, radiological and molecular features of three patients from two unrelated families...
March 16, 2017: BMC Endocrine Disorders
https://www.readbyqxmd.com/read/28299899/salivary-gland-hypofunction-in-kk-ay-type-2-diabetic-mice
#10
Takashi Munemasa, Taro Mukaibo, Yusuke Kondo, Chihiro Masaki, Yuichiro Kusuda, Yuta Miyagi, Shintaro Tsuka, Ryuji Hosokawa, Tetsuji Nakamoto
BACKGROUND: Diabetes mellitus induces several hypofunctions in the body, including in the oral cavity. It is often associated with xerostomia, however the detailed underlying mechanism is not well characterized. METHODS: We used KK-Ay mice, a model of type 2 diabetes, to analyze the mechanism of diabetes-induced xerostomia with the ex vivo glandular perfusion technique, histological analysis, immunohistochemically and intracellular signaling analysis. RESULTS: Ex vivo submandibular gland secretions from KK-Ay mice decreased by 30% when stimulated with moderate stimulation of cholinergic agonist 0...
March 16, 2017: Journal of Diabetes
https://www.readbyqxmd.com/read/28298456/microglial-complement-receptor-3-regulates-brain-a%C3%AE-levels-through-secreted-proteolytic-activity
#11
Eva Czirr, Nicholas A Castello, Kira I Mosher, Joseph M Castellano, Izumi V Hinkson, Kurt M Lucin, Bernat Baeza-Raja, Jae Kyu Ryu, Lulin Li, Sasha N Farina, Nadia P Belichenko, Frank M Longo, Katerina Akassoglou, Markus Britschgi, John R Cirrito, Tony Wyss-Coray
Recent genetic evidence supports a link between microglia and the complement system in Alzheimer's disease (AD). In this study, we uncovered a novel role for the microglial complement receptor 3 (CR3) in the regulation of soluble β-amyloid (Aβ) clearance independent of phagocytosis. Unexpectedly, ablation of CR3 in human amyloid precursor protein-transgenic mice results in decreased, rather than increased, Aβ accumulation. In line with these findings, cultured microglia lacking CR3 are more efficient than wild-type cells at degrading extracellular Aβ by secreting enzymatic factors, including tissue plasminogen activator...
March 15, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28298319/analysis-of-axonal-trafficking-via-a-novel-live-imaging-technique-reveals-distinct-hedgehog-transport-kinetics
#12
Joseph R Daniele, Rehan M Baqri, Samuel Kunes
The Drosophila melanogaster (Dmel) eye is an ideal model to study development, intracellular signaling, behavior, and neurodegenerative disease. Interestingly, dynamic data is not commonly employed to investigate eye-specific disease models. Using axonal transport of the morphogen Hedgehog (Hh), which is integral to Dmel eye-brain development and implicated in stem cell maintenance and neoplastic disease, we demonstrate the ability to comprehensively quantify and characterize its trafficking in various neuron types and a neurodegeneration model in live early 3(rd) instar larval Drosophila We find that neuronal Hh, whose kinetics have not been reported previously, favors fast anterograde transport and varies in speed and flux with respect to axonal position...
March 15, 2017: Biology Open
https://www.readbyqxmd.com/read/28297677/recombinant-bcg-expressing-esx-1-of-mycobacterium-marinum-combines-low-virulence-with-cytosolic-immune-signaling-and-improved-tb-protection
#13
Matthias I Gröschel, Fadel Sayes, Sung Jae Shin, Wafa Frigui, Alexandre Pawlik, Mickael Orgeur, Robin Canetti, Nadine Honoré, Roxane Simeone, Tjip S van der Werf, Wilbert Bitter, Sang-Nae Cho, Laleh Majlessi, Roland Brosch
Recent insights into the mechanisms by which Mycobacterium tuberculosis, the etiologic agent of human tuberculosis, is recognized by cytosolic nucleotide sensors have opened new avenues for rational vaccine design. The only licensed anti-tuberculosis vaccine, Mycobacterium bovis BCG, provides limited protection. A feature of BCG is the partial deletion of the ESX-1 type VII secretion system, which governs phagosomal rupture and cytosolic pattern recognition, key intracellular phenotypes linked to increased immune signaling...
March 14, 2017: Cell Reports
https://www.readbyqxmd.com/read/28294183/the-endoplasmic-reticulum-stress-autophagy-pathway-is-involved-in-cholesterol-induced-pancreatic-%C3%AE-cell-injury
#14
Fei-Juan Kong, Jia-Hua Wu, Shui-Ya Sun, Jia-Qiang Zhou
Lipotoxicity has been implicated in pancreatic β-cell dysfunction in type 2 diabetes, but the exact mechanisms remain unknown. The current study explored the role of the endoplasmic reticulum (ER) stress pathway in cholesterol-induced lipotoxicity. Two different insulinoma cell lines were treated with cholesterol with or without inhibitors. ER stress-associated proteins glucose-regulated protein (GRP) 78, activating transcription factor (ATF) 4 and C/EBP homologous protein (CHOP), as was phosphorylation of eukaryotic initiation factor (EIF) 2α, were all up-regulated by cholesterol...
March 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28293545/helicobacter-pylori-secreted-protein-hp1286-triggers-apoptosis-in-macrophages-via-tnf-independent-and-erk-mapk-dependent-pathways
#15
Raquel Tavares, Sushil Kumar Pathak
Macrophages constitute a powerful line of defense against H. pylori. The final disease outcome is highly dependent on the bacterial ability to modulate the effector functions of activated macrophages. Here, we report that H. pylori secreted protein HP1286 is a novel regulator of macrophage responses. Differential expression and release of HP1286 homologues were observed among H. pylori strains. Recombinant purified HP1286 (rHP1286) had the ability to bind to primary human monocyte-derived macrophages (MDM) and macrophage cell lines...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28292889/intact-colonic-kca1-1-channel-activity-in-kcnmb2-knockout-mice
#16
Casper K Larsen, Helle A Praetorius, Jens Leipziger, Mads V Sorensen
Mammalian potassium homeostasis results from tightly regulated renal and colonic excretion, which balances the unregulated dietary K(+) intake. Colonic K(+) secretion follows the pump-leak model, in which the large conductance Ca(2+)-activated K(+) channel (KCa1.1) is well established as the sole, but highly regulated apical K(+) conductance. The physiological importance of auxiliary β and γ subunits of the pore-forming α-subunit of the KCa1.1 channel is not yet fully established. This study investigates colonic K(+) secretion in a global knockout mouse of the KCa1...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28291954/therapeutic-mechanisms-of-human-adipose-derived-mesenchymal-stem-cells-in-a-rat-tendon-injury-model
#17
Sang Yoon Lee, Bomi Kwon, Kyoungbun Lee, Young Hoon Son, Sun G Chung
BACKGROUND: Although survival of transplanted stem cells in vivo and differentiation of stem cells into tenocytes in vitro have been reported, there have been no in vivo studies demonstrating that mesenchymal stem cells (MSCs) could secrete their own proteins as differentiated tenogenic cells. Purpose/Hypothesis: Using a xenogeneic MSC transplantation model, we aimed to investigate whether MSCs could differentiate into the tenogenic lineage and secrete their own proteins. The hypothesis was that human MSCs would differentiate into the human tenogenic lineage and the cells would be able to secrete human-specific proteins in a rat tendon injury model...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28288148/natriuretic-peptide-c-receptor-in-the-developing-sheep-lung-role-in-perinatal-transition
#18
Bobby Mathew, Christopher A D'Angelis, Satyan Lakshminrusimha, Peter A Nickerson, June J Sokolowski, Vasantha H S Kumar, Huamei Wang, Karen A Wynn, Bruce A Holm, Rita M Ryan
BACKGROUND: At birth, the release of surfactant from Alveolar Type II (ATII) cells is stimulated by increased activity of the beta-adrenergic/adenylyl cyclase/cAMP- signaling cascade. Atrial natriuretic peptide (ANP) stimulates surfactant secretion through Natriuretic peptide receptor A (NPR-A). ANP inhibits adenylyl cyclase activity through its binding to NPR-C. We wished to further understand the role of the NPR-C in perinatal transition. METHODS: We studied fetal and newborn sheep ATII expression of NPR-C and surfactant secretion in isolated ATIIs by measuring (3)[H] choline release into the media...
March 13, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28286209/esophageal-adenocarcinoma-cells-and-xenograft-tumors-exposed-to-erb-b2-receptor-tyrosine-kinase-2-and-3-inhibitors-activate-transforming-growth-factor-beta-signaling-which-induces-epithelial-to-mesenchymal-transition
#19
Eva A Ebbing, Anne Steins, Evelyn Fessler, Phylicia Stathi, Willem Joost Lesterhuis, Kausilia K Krishnadath, Louis Vermeulen, Jan Paul Medema, Maarten F Bijlsma, Hanneke W M van Laarhoven
BACKGROUND & AIMS: Drugs that inhibit the erb-b2 receptor tyrosine kinase 2 (ERBB2 or HER2) are the standard treatment of patients with different types of cancer, including HER2-overexpressing gastroesophageal tumors. Unfortunately, cancer cells become resistant to these drugs, so overall these drugs provide little benefit to patients with these tumors. We investigated mechanisms that mediate resistance of esophageal adenocarcinoma (EAC) cells and patient-derived xenograft (PDX) tumors to ERBB inhibitors...
March 9, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28284605/pro-apoptotic-effect-of-a-mycoplasma-hyopneumoniae-putative-type-i-signal-peptidase-on-pk-15-swine-cells
#20
Jéssica A Paes, Veridiana G Virginio, Martín Cancela, Fernanda M A Leal, Thiago J Borges, Natália Jaeger, Cristina Bonorino, Irene S Schrank, Henrique B Ferreira
Mycoplasma hyopneumoniae is an economically significant swine pathogen that causes porcine enzootic pneumonia (PEP). Important processes for swine infection by M. hyopneumoniae depend on cell surface proteins, many of which are secreted by secretion pathways not completely elucidated so far. A putative type I signal peptidase (SPase I), a possible component of a putative Sec-dependent pathway, was annotated as a product of the sipS gene in the pathogenic M. hyopneumoniae 7448 genome. This M. hyopneumoniae putative SPase I (MhSPase I) displays only 14% and 23% of sequence identity/similarity to Escherichia coli bona fide SPase I, and, in complementation assays performed with a conditional E...
March 2017: Veterinary Microbiology
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