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https://www.readbyqxmd.com/read/28817691/rac2-is-required-for-alternative-macrophage-activation-and-bleomycin-induced-pulmonary-fibrosis-a-macrophage-autonomous-phenotype
#1
Shweta Joshi, Alok R Singh, Simon S Wong, Muamera Zulcic, Min Jiang, Annie Pardo, Moises Selman, James S Hagood, Donald L Durden
Idiopathic pulmonary fibrosis (IPF) is a chronic lung disease characterized by cellular phenotype alterations and deposition of extracellular matrix proteins. The alternative activation of macrophages in the lungs has been associated as a major factor promoting pulmonary fibrosis, however the mechanisms underlying this phenomenon are poorly understood. In the present study, we have defined a molecular mechanism by which signals transmitted from the extracellular matrix via the α4β1 integrin lead to the activation of Rac2 which regulates alternative macrophage differentiation, a signaling axis within the pulmonary macrophage compartment required for bleomycin induced pulmonary fibrosis...
2017: PloS One
https://www.readbyqxmd.com/read/28817241/association-between-vitamin-d-deficiency-and-heart-failure-risk-in-the-elderly
#2
Catarina Magalhães Porto, Vanessa De Lima Silva, João Soares Brito da Luz, Brivaldo Markman Filho, Vera Magalhães da Silveira
AIMS: The aim of this study was to evaluate the association between vitamin D deficiency and risk of heart failure in elderly patients of cardiology outpatient clinics. METHODS AND RESULTS: A cross-sectional study with an analytical approach was employed. Clinical data were collected from the elderly from August 2015 to February 2016. The dependent variable was the risk of heart failure; the independent variable was vitamin D deficiency; and intervening factors were age, gender, education, ethnicity, hypertension, diabetes mellitus, hypothyroidism, renal failure, dementia, stroke, dyslipidaemia, depression, smoking, alcoholism, obesity, andropause, and cardiac arrhythmia...
August 17, 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/28817111/prospective-cohort-study-for-identification-of-underlying-genetic-causes-in-neonatal-encephalopathy-using-whole-exome-sequencing
#3
Theodora U J Bruun, Caro-Lyne DesRoches, Diane Wilson, Vann Chau, Tadashi Nakagawa, Masahiro Yamasaki, Shinya Hasegawa, Toshiyuki Fukao, Christian Marshall, Saadet Mercimek-Andrews
PurposeNeonatal encephalopathy, which is characterized by a decreased level of consciousness, occurs in 1-7/1,000 live-term births. In more than half of term newborns, there is no identifiable etiological factor. To identify underlying genetic defects, we applied whole-exome sequencing (WES) in term newborns with neonatal encephalopathy as a prospective cohort study.MethodsTerm newborns with neonatal encephalopathy and no history of perinatal asphyxia were included. WES was performed using patient and both parents' DNA...
August 17, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28816930/associations-among-circulating-csf-1-estrogen-and-bone-mineral-density-in-postmenopausal-women-results-from-a-randomized-placebo-controlled-trial
#4
Andrea V Haas, Elaine Cong, Christine A Simpson, Nitin Sukumar, Yanhong Deng, Karl L Insogna
OBJECTIVE: This study addresses the relationship between circulating levels of colony-stimulating factor 1 (CSF-1) and rates of postmenopausal bone loss. The purpose was to test the hypothesis that CSF-1 levels would correlate with the rate of bone loss in estrogen-deficient woman. We further hypothesized that estrogen replacement would eliminate this association. METHODS: This was an ancillary study to the parent Kronos Early Estrogen Prevention Study (KEEPS)-a 4-year randomized placebo-controlled study that evaluated the effects of estrogen therapy on cardiovascular endpoints...
August 14, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28816211/a-study-of-events-between-the-onset-of-symptoms-and-hospital-admission-in-patients-with-acute-abdomen
#5
Shubhada Khanapure, Sanjay Nagral, Aditya J Nanavati
BACKGROUND: Acute abdomen is a common surgical emergency. Prompt investigation and treatment, including surgical intervention, is critical in reducing morbidity and mortality. METHODS: We carried out a prospective observational study at a large urban secondary healthcare centre in India. Patients with surgical acute abdomen were consecutively enrolled in the study over a period of 2 years. Data were collected regarding the onset of symptoms, time of presentation to the hospital and events in the intervening period...
March 2017: National Medical Journal of India
https://www.readbyqxmd.com/read/28816011/lessons-learnt-from-incidents-involving-the-airway-and-breathing-reported-from-australasian-emergency-departments
#6
Carmel Crock, Kim Hansen, Toby Fogg, Angela Cahill, Anita Deakin, William B Runciman
OBJECTIVE: To review incident reports relating to problems encountered during the ED management of patients with 'airway or breathing' problems, with the aim of finding and highlighting common themes within these rare events, and making recommendations to further improve patient safety in the areas in which deficiencies have been identified. METHODS: Thematic analysis of 36 incidents reported from Australasian EDs, which were related to problems with airway and breathing...
August 16, 2017: Emergency Medicine Australasia: EMA
https://www.readbyqxmd.com/read/28815566/maturation-promoting-factor-destabilization-mediates-human-chorionic-gonadotropin-induced-meiotic-resumption-in-rat-oocytes
#7
Meenakshi Tiwari, Shail K Chaube
Human chorionic gonadotropin (hCG) mimics the action of luteinizing hormone (LH) and triggers meiotic maturation and ovulation in mammals. The mechanism by which hCG triggers meiotic resumption in mammalian oocytes remains poorly understood. We aimed to find out the impact of hCG surge on morphological changes, adenosine 3',5'-cyclic monophosphate (cAMP), guanosine 3',5'-cyclic monophosphate (cGMP), cell division cycle 25B (Cdc25B), Wee1, early mitotic inhibitor 2 (Emi2), anaphase-promoting complex/cyclosome (APC/C), meiotic arrest deficient protein 2 (MAD2), phosphorylation status of cyclin-dependent kinase 1 (Cdk1), its activity and cyclin B1 expression levels during meiotic resumption from diplotene as well as metaphase-II (M-II) arrest in cumulus oocyte complexes (COCs)...
August 16, 2017: Development, Growth & Differentiation
https://www.readbyqxmd.com/read/28815553/osteoporosis-in-erythropoietic-protoporphyria-patients
#8
M Biewenga, R H S Matawlie, E C H Friesema, H Koole-Lesuis, M Langeveld, J H P Wilson, J G Langendonk
BACKGROUND: Erythropoietic protoporphyria is a rare metabolic disease with painful photosensitivity due to protoporphyrin IX accumulation, resulting in lifelong light avoidance behaviour. OBJECTIVES: The aim of this study was to evaluate bone mineral density and known osteoporosis risk factors in erythropoietic protoporphyria patients. METHODS: In this cross-sectional study all erythropoietic protoporphyria patients attending the Erasmus MC outpatient clinic that had undergone bone mineral density measurements were included...
August 17, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28815025/oesophageal-candidiasis-and-squamous-cell-cancer-in-patients-with-gain-of-function-stat1-gene-mutation
#9
Sara Koo, Deepak Kejariwal, Tariq Al-Shehri, Anjan Dhar, Desa Lilic
BACKGROUND: Oesophageal candidiasis is a common, usually self-limiting opportunistic infection, but long-term infection with Candida is known to predispose to oral and oesophageal squamous cell cancer (SCC). Permissive factors that lead to immune deficiencies can underlie persistent or recurring candidiasis, called chronic mucocutaneous candidiasis (CMC). Secondary immune deficiencies are most often due to human immunodeficiency virus (HIV) infection, antibiotic use and immunosuppressive treatment (steroids, chemotherapy)...
August 2017: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/28815023/antibiotic-resistance-ability-to-form-biofilm-and-susceptibility-to-copper-alloys-of-selected-staphylococcal-strains-isolated-from-touch-surfaces-in-polish-hospital-wards
#10
Anna Różańska, Agnieszka Chmielarczyk, Dorota Romaniszyn, Małgorzata Bulanda, Monika Walkowicz, Piotr Osuch, Tadeusz Knych
BACKGROUND: Despite the employment of sanitary regimes, contact transmission of the aetiological agents of hospital infections is still exceedingly common. The issue of microbe transmission becomes particularly important when facing multidrug-resistant microorganisms such as methicillin-resistant staphylococci. In the case of deficiencies in cleaning and disinfection procedures, hospital equipment made of copper alloys can play an important role, complementing traditional hospital hygiene procedures...
2017: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/28814833/markers-of-oxidative-nitrosative-stress-and-inflammation-in-lung-tissue-of-rats-exposed-to-different-intravenous-iron-compounds
#11
Jorge E Toblli, Gabriel Cao, Jorge F Giani, Fernando P Dominici, Margarita Angerosa
Iron deficiency anemia is a frequent complication in clinical conditions such as chronic kidney disease, chronic heart failure, inflammatory bowel disease, cancer, and excessive blood loss. Given the ability of iron to catalyze redox reactions, iron therapy can be associated with oxidative stress. The lung is uniquely susceptible to oxidative stress, and little is known about the effects of intravenous iron treatment in this organ. This study characterized changes in markers of oxidative/nitrosative stress and inflammation in the lung of non-iron deficient, non-anemic rats treated with five weekly doses (40 mg iron per kg body weight) of low molecular weight iron dextran (LMWID), iron sucrose (IS), ferric carboxymaltose (FCM), ferumoxytol (FMX), iron isomaltoside 1000 (IIM), or saline (control)...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28814742/the-candida-albicans-hir-histone-chaperone-regulates-the-yeast-to-hyphae-transition-by-controlling-the-sensitivity-to-morphogenesis-signals
#12
Sabrina Jenull, Michael Tscherner, Megha Gulati, Clarissa J Nobile, Neeraj Chauhan, Karl Kuchler
Morphological plasticity such as the yeast-to-hyphae transition is a key virulence factor of the human fungal pathogen Candida albicans. Hyphal formation is controlled by a multilayer regulatory network composed of environmental sensing, signaling, transcriptional modulators as well as chromatin modifications. Here, we demonstrate a novel role for the replication-independent HIR histone chaperone complex in fungal morphogenesis. HIR operates as a crucial modulator of hyphal development, since genetic ablation of the HIR complex subunit Hir1 decreases sensitivity to morphogenetic stimuli...
August 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28814139/validation-of-a-brazilian-version-of-the-moral-sensitivity-questionnaire
#13
Carlise R Dalla Nora, Elma Lcp Zoboli, Margarida M Vieira
BACKGROUND: Moral sensitivity has been identified as a foundational component of ethical action. Diminished or absent moral sensitivity can result in deficient care. In this context, assessing moral sensitivity is imperative for designing interventions to facilitate ethical practice and ensure that nurses make appropriate decisions. OBJECTIVE: The main purpose of this study was to validate a scale for examining the moral sensitivity of Brazilian nurses. RESEARCH DESIGN: A pre-existing scale, the Moral Sensitivity Questionnaire, which was developed by Lützén, was used after the deletion of three items...
January 1, 2017: Nursing Ethics
https://www.readbyqxmd.com/read/28813670/nkx2-1-is-required-in-the-embryonic-septum-for-cholinergic-system-development-learning-and-memory
#14
Lorenza Magno, Caswell Barry, Christoph Schmidt-Hieber, Polyvios Theodotou, Michael Häusser, Nicoletta Kessaris
The transcription factor NKX2-1 is best known for its role in the specification of subsets of cortical, striatal, and pallidal neurons. We demonstrate through genetic fate mapping and intersectional focal septal deletion that NKX2-1 is selectively required in the embryonic septal neuroepithelium for the development of cholinergic septohippocampal projection neurons and large subsets of basal forebrain cholinergic neurons. In the absence of NKX2-1, these neurons fail to develop, causing alterations in hippocampal theta rhythms and severe deficiencies in learning and memory...
August 15, 2017: Cell Reports
https://www.readbyqxmd.com/read/28813526/mtor-has-a-developmental-stage-specific-role-in-mitochondrial-fitness-independent-of-conventional-mtorc1-and-mtorc2-and-the-kinase-activity
#15
Khalid W Kalim, Shuangmin Zhang, Xiaoyi Chen, Yuan Li, Jun-Qi Yang, Yi Zheng, Fukun Guo
The mammalian target of rapamycin (mTOR), present in mTOR complex 1 (mTORC1) and mTORC2, is a serine/threonine kinase that integrates nutrients, growth factors, and cellular energy status to control protein synthesis, cell growth, survival and metabolism. However, it remains elusive whether mTOR plays a developmental stage-specific role in tissue development and whether mTOR can function independent of its complexes and kinase activity. In this study, by inducible genetic manipulation approach, we investigated the role of mTOR and its dependence on mTOR complexes and kinase activity in mitochondrial fitness of early, progenitor stage (lineage-negative; Lin-) versus later, lineage-committed stage (lineage-positive; Lin+) of hematopoietic cells...
2017: PloS One
https://www.readbyqxmd.com/read/28813500/telomere-biology-and-telomerase-mutations-in-cirrhotic-patients-with-hepatocellular-carcinoma
#16
Flávia S Donaires, Natália F Scatena, Raquel M Alves-Paiva, Joshua D Podlevsky, Dhenugen Logeswaran, Barbara A Santana, Andreza C Teixeira, Julian J-L Chen, Rodrigo T Calado, Ana L C Martinelli
Telomeres are repetitive DNA sequences at linear chromosome termini, protecting chromosomes against end-to-end fusion and damage, providing chromosomal stability. Telomeres shorten with mitotic cellular division, but are maintained in cells with high proliferative capacity by telomerase. Loss-of-function mutations in telomere-maintenance genes are genetic risk factors for cirrhosis development in humans and murine models. Telomerase deficiency provokes accelerated telomere shortening and dysfunction, facilitating genomic instability and oncogenesis...
2017: PloS One
https://www.readbyqxmd.com/read/28813167/lipophagy-maintains-energy-homeostasis-in-the-kidney-proximal-tubule-during-prolonged-starvation
#17
Satoshi Minami, Takeshi Yamamoto, Yoshitsugu Takabatake, Atsushi Takahashi, Tomoko Namba, Jun Matsuda, Tomonori Kimura, Jun-Ya Kaimori, Isao Matsui, Takayuki Hamano, Hiroaki Takeda, Masatomo Takahashi, Yoshihiro Izumi, Takeshi Bamba, Taiji Matsusaka, Fumio Niimura, Yoshitaka Isaka
Macroautophagy/autophagy is a self-degradation process that combats starvation. Lipids are the main energy source in kidney proximal tubular cells (PTCs). During starvation, PTCs increase fatty acid (FA) uptake, form intracellular lipid droplets (LDs), and hydrolyze them for use. The involvement of autophagy in lipid metabolism in the kidney remains largely unknown. Here, we investigated the autophagy-mediated regulation of renal lipid metabolism during prolonged starvation using PTC-specific Atg5-deficient (atg5-TSKO) mice and an in vitro serum starvation model...
August 16, 2017: Autophagy
https://www.readbyqxmd.com/read/28812215/proteomic-alterations-associated-with-biomechanical-dysfunction-are-early-processes-in-the-emilin1-deficient-mouse-model-of-aortic-valve-disease
#18
P M Angel, D A Narmoneva, M K Sewell-Loftin, C Munjal, L Dupuis, B J Landis, A Jegga, C B Kern, W D Merryman, H S Baldwin, G M Bressan, Robert B Hinton
Aortic valve (AV) disease involves stiffening of the AV cusp with progression characterized by inflammation, fibrosis, and calcification. Here, we examine the relationship between biomechanical valve function and proteomic changes before and after the development of AV pathology in the Emilin1-/- mouse model of latent AV disease. Biomechanical studies were performed to quantify tissue stiffness at the macro (micropipette) and micro (atomic force microscopy (AFM)) levels. Micropipette studies showed that the Emilin1-/- AV annulus and cusp regions demonstrated increased stiffness only after the onset of AV disease...
August 15, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28811953/from-inflammation-to-current-and-alternative-therapies-involved-in-wound-healing
#19
REVIEW
Mariana Barreto Serra, Wermerson Assunção Barroso, Neemias Neves da Silva, Selma do Nascimento Silva, Antonio Carlos Romão Borges, Iracelle Carvalho Abreu, Marilene Oliveira da Rocha Borges
Wound healing is a complex event that develops in three overlapping phases: inflammatory, proliferative, and remodeling. These phases are distinct in function and histological characteristics. However, they depend on the interaction of cytokines, growth factors, chemokines, and chemical mediators from cells to perform regulatory events. In this article, we will review the pathway in the skin healing cascade, relating the major chemical inflammatory mediators, cellular and molecular, as well as demonstrating the local and systemic factors that interfere in healing and disorders associated with tissue repair deficiency...
2017: International Journal of Inflammation
https://www.readbyqxmd.com/read/28811702/precision-medicine-in-need-of-guidance-and-surveillance
#20
EDITORIAL
Jian-Zhen Lin, Jun-Yu Long, An-Qiang Wang, Ying Zheng, Hai-Tao Zhao
Precision medicine, currently a hotspot in mainstream medicine, has been strongly promoted in recent years. With rapid technological development, such as next-generation sequencing, and fierce competition in molecular targeted drug exploitation, precision medicine represents an advance in science and technology; it also fulfills needs in public health care. The clinical translation and application of precision medicine - especially in the prevention and treatment of tumors - is far from satisfactory; however, the aims of precision medicine deserve approval...
July 28, 2017: World Journal of Gastroenterology: WJG
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