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https://www.readbyqxmd.com/read/28445457/the-mitochondrial-na-ca-2-exchanger-is-essential-for-ca-2-homeostasis-and-viability
#1
Timothy S Luongo, Jonathan P Lambert, Polina Gross, Mary Nwokedi, Alyssa A Lombardi, Santhanam Shanmughapriya, April C Carpenter, Devin Kolmetzky, Erhe Gao, Jop H van Berlo, Emily J Tsai, Jeffery D Molkentin, Xiongwen Chen, Muniswamy Madesh, Steven R Houser, John W Elrod
Mitochondrial calcium (mCa(2+)) has a central role in both metabolic regulation and cell death signalling, however its role in homeostatic function and disease is controversial. Slc8b1 encodes the mitochondrial Na(+)/Ca(2+) exchanger (NCLX), which is proposed to be the primary mechanism for mCa(2+) extrusion in excitable cells. Here we show that tamoxifen-induced deletion of Slc8b1 in adult mouse hearts causes sudden death, with less than 13% of affected mice surviving after 14 days. Lethality correlated with severe myocardial dysfunction and fulminant heart failure...
April 26, 2017: Nature
https://www.readbyqxmd.com/read/28444097/chronic-polyarthritis-as-the-first-manifestation-of-childhood-systemic-polyarteritis-nodosa
#2
Glaucia Vanessa Novak, Koken Hayashi, Kohei Sampa, Yosuke Okumura, Gabriela Ribeiro Viola Ferreira, Clovis Artur Silva
Arthritis has been reported as an acute pattern, generally evanescent with oligoarthritis, mostly affecting knees and ankles in childhood systemic polyarteritis nodosa. However, chronic polyarthritis with morning stiffness mimicking juvenile idiopathic arthritis has not been reported. We describe the case of a 4-year old girl who had additive and chronic polyarthritis with edema, tenderness, pain on motion and morning stiffness for 2 months. After 45 days, she also presented painful subcutaneous nodules and erythematous-violaceous lesions in the extensor region of upper and lower limbs...
January 2017: Einstein
https://www.readbyqxmd.com/read/28443952/boerhaave-syndrome-and-black-esophagusresponse-to-letter-to-the-editorboerhaave-syndrome-case-reporta-case-of-acute-necrotizing-esophagitisblack-esophagus-new-insights-and-multicenter-international-experience-in-2014
#3
https://www.readbyqxmd.com/read/28442219/virulence-potential-of-staphylococcus-aureus-isolates-from-buruli-ulcer-patients
#4
Nana Ama Amissah, Monika A Chlebowicz, Anthony Ablordey, Caitlin S Tetteh, Isaac Prah, Tjip S van der Werf, Alex W Friedrich, Jan Maarten van Dijl, Ymkje Stienstra, John W Rossen
Buruli ulcer (BU) is a necrotizing infection of the skin and subcutaneous tissue caused by Mycobacterium ulcerans. BU wounds may also be colonized with other microorganisms including Staphylococcus aureus. This study aimed to characterize the virulence factors of S. aureus isolated from BU patients. Previously sequenced genomes of 21 S. aureus isolates from BU patients were screened for the presence of virulence genes. The results show that all S. aureus isolates harbored on their core genomes genes for known virulence factors like α-hemolysin, and the α- and β-phenol soluble modulins...
April 19, 2017: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/28441432/dysbiosis-of-intestinal-microbiota-and-decrease-in-paneth-cell-antimicrobial-peptide-level-during-acute-necrotizing-pancreatitis-in-rats
#5
Jing Chen, Chunlan Huang, Jingjing Wang, Hui Zhou, Yingying Lu, Lihong Lou, Junyuan Zheng, Ling Tian, Xingpeng Wang, Zhongwei Cao, Yue Zeng
OBJECTIVES: Intestinal barrier dysfunction plays an important role in acute necrotizing pancreatitis (ANP) and intestinal microbiota dysbiosis was involved in intestinal barrier failure. Paneth cells protect intestinal barrier and are associated with intestinal microbiota. Here, we investigated changes in intestinal microbiota and antimicrobial peptides of Paneth cells in ileum during ANP. METHODS: Rats with ANP were established by retrograde injection of 3.5% sodium taurocholate into biliopancreatic duct and sacrificed at 24h and 48h, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28441386/graft-derived-cell-free-dna-a-noninvasive-early-rejection-and-graft-damage-marker-in-liver-transplantation-a-prospective-observational-multicenter-cohort-study
#6
Ekkehard Schütz, Anna Fischer, Julia Beck, Markus Harden, Martina Koch, Tilo Wuensch, Martin Stockmann, Björn Nashan, Otto Kollmar, Johannes Matthaei, Philipp Kanzow, Philip D Walson, Jürgen Brockmöller, Michael Oellerich
BACKGROUND: Graft-derived cell-free DNA (GcfDNA), which is released into the blood stream by necrotic and apoptotic cells, is a promising noninvasive organ integrity biomarker. In liver transplantation (LTx), neither conventional liver function tests (LTFs) nor immunosuppressive drug monitoring are very effective for rejection monitoring. We therefore hypothesized that the quantitative measurement of donor-derived cell-free DNA (cfDNA) would have independent value for the assessment of graft integrity, including damage from acute rejection...
April 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28440998/-extranodal-nk-t-cell-lymphoma-nasal-type-in-granulomatosis-with-polyangiitis-a-case-report
#7
Sergio Alberto Mendoza-Álvarez, Fátima Margarita Rodríguez-Dávila, Leslie Moranchel-García, Virginia Soto, Natalia Quisped
BACKGROUND: Granulomatosis with polyangiitis (GP) is a systemic necrotizing vasculitis with multi-organ involvement that primarily affects the respiratory tract and the kidneys. Fever in these patients is an indicator of activity; however, if it arises in isolation, the physician should exclude other causes. CLINICAL CASE: Male patient admitted due to an unexplained fever and weight loss; it was diagnosed GP by a history of pauci-immune glomerulonephritis, fixed pulmonary nodules and chronic sinusitis of four years of evolution; however, the fever persisted despite treatment and in the absence of infection...
May 2017: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/28440995/-the-first-clinical-description-of-granulomatosis-with-polyangiitis-known-before-as-wegener-s-granulomatosis
#8
Ulises Mercado
Before 1950, cases of necrotizing vasculitis were commonly published in journals of pathology. Most of these cases were designated as polyarteritis nodosa. In 1952, the pathologist Pearl Zeek critically reviewed and summarized the literature dealing with polyarteritis nodosa and first grouped the different types of necrotizing vasculitis. But she omitted some types of not well-characterized vasculitis, among them granulomatosis with polyangiitis (Wegener's granulomatosis).
May 2017: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/28440506/association-between-high-mobility-group-box%C3%A2-1-protein-expression-and-cell-death-in-acute-pancreatitis
#9
Enjun Gao, Yanfeng Jiang, Zhituo Li, Dongbo Xue, Weihui Zhang
The present study used caerulein stimulation of AR42J rat pancreatic cells as an in vitro acute pancreatitis (AP) model to investigate proteins differentially expressed in apoptosis and necrosis. AR42J cells were stimulated with 10‑8mol/l caerulein and incubated for 24 h. Apoptosis and necrosis were detected using flow cytometry. The sorted Annexin V‑positive cells (apoptotic) and the Annexin V/propidium iodide double‑positive cells (necrotic) were analysed using proteomics. Results showed that numerous proteins were differentially expressed in these 2 groups...
April 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28439928/effect-of-ultrasonic-activation-on-the-reduction-of-bacteria-and-endotoxins-in-root-canals-a-randomized-clinical-trial
#10
V C Nakamura, E T Pinheiro, L C Prado, A C Silveira, A P L Carvalho, M P A Mayer, G Gavini
AIM: This randomized clinical trial aimed to compare the effectiveness of ultrasonic activation with that of a non-activated irrigation on the removal of bacteria and endotoxin from root canals. METHODOLOGY: Fifty patients with necrotic pulps and asymptomatic apical periodontitis were randomly allocated into two groups according to the final irrigation protocol after root canal preparation: Group UI - ultrasonic irrigation (n=25) and Group NI - needle irrigation (n=25)...
April 25, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28439195/the-role-of-serial-measurements-of-serum-insulin-like-growth-factor-1-levels-in-the-development-of-retinopathy-of-prematurity
#11
Bayram Ali Dorum, Cansu Canbolat Yılmaz, Nilgün Köksal, Hilal Özkan, Meral Yıldız, Ahmet Tuncer Özmen
AIM: To determine the role of serum insulin-like growth factor-1 levels in the development of retinopathy of prematurity, which is a major cause of childhood blindness worldwide. MATERIAL AND METHODS: We prospectively studied newborn infants born at a postmenstrual age of <32 weeks and birth weights <1 500 gr, between January 1(st), 2015, and December 31(st), 2015. A total of 40 infants were enrolled in the study. The retinal examination time was determined in accordance with the American Academy of Pediatrics recommendations for retinopathy of prematurity screening and follow-up...
March 2017: Türk Pediatri Arşivi
https://www.readbyqxmd.com/read/28439062/a-rare-case-of-necrotizing-myopathy-and-fibrinous-and-organizing-pneumonia-with-anti-ej-antisynthetase-syndrome-and-ssa-antibodies
#12
Muhammad Kashif, Divya Arya, Masooma Niazi, Misbahuddin Khaja
BACKGROUND Idiopathic inflammatory myopathies are autoimmune disorders that can involve the skin, joints, muscles, and lungs. The most common of these disorders are dermatomyositis, polymyositis, overlap syndrome, and inclusion body myositis. Necrotizing autoimmune myopathy is an idiopathic inflammatory myopathy that is rarely associated with Sjögren's syndrome. The most common lung findings associated with anti-EJ antisynthetase syndrome are nonspecific interstitial pneumonia and usual interstitial pneumonia; this condition is rarely associated with fibrinous and organizing pneumonia...
April 25, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28438351/fever-and-ulcerative-necrotic-lesions-in-a-38-years-old-male
#13
Raquel Cabrera-Fuentes, Alejandro Ortiz-Prieto, Teresa Zulueta-Dorado, Julián Conejo-Mir
No abstract text is available yet for this article.
April 21, 2017: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/28438111/pathology-of-naturally-occurring-bacillary-hemoglobinuria-in-cattle
#14
M A Navarro, F Dutra, C Briano, A Romero, M Persiani, J C Freedman, E Morrell, J Beingesser, F A Uzal
Clostridium haemolyticum causes bacillary hemoglobinuria (BH), an infectious and usually fatal disease that occurs mostly in cattle, which is clinically characterized by jaundice, hemoglobinuria, and anemia. The trematode Fasciola hepatica has been commonly reported as the main predisposing factor that triggers this condition. The authors evaluated 20 naturally occurring cases of bovine BH to characterize the pathology and pathogenesis of the disease. Grossly, the most consistent finding was a large, frequently single focus of necrosis surrounded by a red to purple halo, observed most frequently on the parietal surface of the right and left hepatic lobes...
May 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28438078/ten-year-follow-up-of-a-case-of-necrotizing-fasciitis-successfully-treated-with-negative-pressure-wound-therapy-dermal-regeneration-template-application-and-split-thickness-skin-autograft
#15
Sagi Martinov, Soccoro Ortiz
INTRODUCTION: Necrotizing fasciitis is a rapidly progressive and often fatal infection of the fasciae and subcutaneous tissues. PATIENT AND METHODS: In this case report, we present the treatment of a 63-year-old patient suffering from diabetes mellitus, who was admitted to the emergency unit for severe right gluteal pain, which had begun 24 hours before admission. Cutaneous symptoms, oliguria, metabolic acidosis, acute renal failure, severe hypotension, and tachycardia occurred, and the patient was admitted to Intensive Care a few hours after initial admission...
April 25, 2017: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/28435893/opacification-domain-of-serum-opacity-factor-inhibits-beta-hemolysis-and-contributes-to-virulence-of-streptococcus-pyogenes
#16
Luchang Zhu, Randall J Olsen, James M Musser
Serum opacity factor (SOF) is a cell surface virulence factor made by the human pathogen Streptococcus pyogenes. We found that S. pyogenes strains with naturally occurring truncation mutations in the sof gene have markedly enhanced beta-hemolysis. Moreover, deletion of the sof gene in a SOF-positive parental strain resulted in significantly increased beta-hemolysis. Together, these observations suggest that SOF is an inhibitor of beta-hemolysis. SOF has two major functional domains, including an opacification domain and a fibronectin-binding domain...
March 2017: MSphere
https://www.readbyqxmd.com/read/28435822/targeted-intracellular-heat-transfer-in-cancer-therapy-assessment-of-asparagine-laminated-gold-nanoparticles-in-cell-model-of-t-cell-leukemia
#17
Shadab Shahriari, Maryam Bakhshi, Ahmad Reza Shahverdi, Azar Berahmeh, Farnaz Safavifar, Mohammad Reza Khorramizadeh
BACKGROUND: High temperatures have destructive effects on cancer cells by damaging proteins and structures within cells. Gold nanoparticles (AuNPs) can act as drug delivery vehicles, especially for cancer therapy. Due to the selective intake of asparagine molecules into malignant cells, AuNPs were coated with asparagine; and CCRF-CEM human T-cell leukemia cells were treated with the new combination, Asn-AuNPs, at 39 °C. METHODS: The co-authors from a number of collaborative labs located at Tehran University of Medical Sciences, Tehran, Iran, have initiated the idea and preliminary design of this study in 2011...
March 2017: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/28435257/effects-of-arginine-glycine-aspartic-acid-peptide-conjugated-quantum-dots-induced-photodynamic-therapy-on-pancreatic-carcinoma-in-vivo
#18
Ming-Ming Li, Jia Cao, Jia-Chun Yang, Yu-Jie Shen, Xiao-Lei Cai, Yuan-Wen Chen, Chun-Ying Qu, Yi Zhang, Feng Shen, Lei-Ming Xu
Quantum dots (QDs) conjugated with integrin antagonist arginine-glycine-aspartic acid (RGD) peptides (QDs-RGD) are novel nanomaterials with a unique optical property: a high molar extinction coefficient. Previously, we have shown that QDs-RGD demonstrate a photodynamic therapy (PDT) effect as new photosensitizers for the pancreatic cancer cell line SW1990 in vitro. Here, we investigate the application of QDs-RGD in mice bearing pancreatic tumors using PDT. To ensure that more photosensitizers accumulated in tumors, QDs-RGD were injected intratumorally...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28434099/the-complete-genome-sequence-of-a-novel-virus-bellflower-veinal-mottle-virus-suggests-the-existence-of-a-new-genus-within-the-family-potyviridae
#19
Jang-Kyun Seo, Hae-Ryun Kwak, Mi-Kyeong Kim, Jeong-Soo Kim, Hong-Soo Choi
A new virus was isolated from a bellflower (Campanula takesimana) plant showing veinal mottle symptoms, and its complete genome sequence was determined. The viral genome consists of a positive-sense single-stranded RNA of 8,259 ribonucleotides. Electron microscopic observation revealed that the viral genome is packaged as a filamentous particle with an average length of approximately 760 nm. BLAST searches of protein databases showed that the encoded polyprotein has a maximum amino acid sequence identity of 34...
April 22, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28434039/outcome-of-stoma-closure-in-babies-with-necrotising-enterocolitis-early-vs-late-closure
#20
Debasish Bijoykrishna Banerjee, Hasanthi Vithana, Shilpa Sharma, Thomas Tat Ming Tsang
Newborns undergoing surgery for necrotizing enterocolitis (NEC) often require a stoma. Currently, there is no consensus regarding the best time for stoma closure (SC). Our aim was to determine the outcomes of early versus late closure. METHODS: Retrospective analysis of patients who underwent SC following stoma formation for NEC between Jan 2009 and July 2015 was done. Early (EC) versus late closure (LC) was defined as less than 10 weeks versus at or after 10 weeks of stoma formation...
April 22, 2017: Pediatric Surgery International
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