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necrotizing pneumonia

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https://www.readbyqxmd.com/read/28336122/familial-acute-necrotizing-encephalopathy-with-ranbp2-mutation-the-first-report-in-northeast-asia
#1
Yun-Jeong Lee, Su-Kyeong Hwang, So Mi Lee, Soonhak Kwon
BACKGROUND: Acute necrotizing encephalopathy (ANE) is a rare but rapidly progressing encephalopathy following a febrile illness, commonly a viral infection. It is characterized by the features of acute encephalopathy such as seizure, alteration of consciousness, and symmetric involvement of the bilateral thalamus on neuroimaging tests. Although most ANE cases have occurred sporadically, familial or recurrent ANE has been reported in Caucasian patients, with genetic susceptibility to ANE noted in some patients due to a RANBP2 mutation...
March 20, 2017: Brain & Development
https://www.readbyqxmd.com/read/28325626/group-b-streptococcal-necrotizing-pneumonia-in-a-diabetic-adult-patient
#2
Andrea Pacha, Ramiro Luna Cian, Laura Bonofiglio, Melisa Solari, Virginia Strada, Mariana Suárez, Laura Vigliarolo, Carina Tersigni, Marta Mollerach, Horacio Lopardo
The aim of this report is to describe a rare case of necrotizing pneumonia due to group B Streptococcus serotype III in a relatively young male adult (48 years old) suffering from diabetes. The organism was isolated from his pleural fluid and was only resistant to tetracycline. The patient first received ceftazidime (2g/8h i.v.)+clindamycin (300mg/8h) for 18 days and then he was discharged home and orally treated with amoxicillin clavulanic acid (1g/12h) for 23 days with an uneventful evolution. As in the cases of invasive infection by Streptococcus pyogenes, clindamycin could prevent streptococcal toxic shock syndrome...
March 18, 2017: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/28302073/image-quality-improvement-using-model-based-iterative-reconstruction-in-low-dose-chest-ct-for-children-with-necrotizing-pneumonia
#3
Jihang Sun, Tong Yu, Jinrong Liu, Xiaomin Duan, Di Hu, Yong Liu, Yun Peng
BACKGROUND: Model-based iterative reconstruction (MBIR) is a promising reconstruction method which could improve CT image quality with low radiation dose. The purpose of this study was to demonstrate the advantage of using MBIR for noise reduction and image quality improvement in low dose chest CT for children with necrotizing pneumonia, over the adaptive statistical iterative reconstruction (ASIR) and conventional filtered back-projection (FBP) technique. METHODS: Twenty-six children with necrotizing pneumonia (aged 2 months to 11 years) who underwent standard of care low dose CT scans were included...
March 16, 2017: BMC Medical Imaging
https://www.readbyqxmd.com/read/28289673/chronic-suppurative-lung-disease-in-children-definition-and-spectrum-of-disease
#4
REVIEW
Gregory J Redding, Edward R Carter
The most common clinical suppurative lung conditions in children are empyema, lung abscess, and bronchiectasis, and to a less often necrotizing pneumonia. Until recently, bronchiectasis was the most common form of persistent suppurative lung disease in children. Protracted bacterial bronchitis is a newly described chronic suppurative condition in children, which is less persistent but more common than bronchiectasis (1). In addition, the term "chronic suppurative lung disease" has been used recently to describe the clinical features of bronchiectasis when the radiographic features needed to make a diagnosis of bronchiectasis are absent...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28273858/use-of-a-pan-genomic-dna-microarray-in-determination-of-the-phylogenetic-relatedness-among-cronobacter-spp-and-its-use-as-a-data-mining-tool-to-understand-cronobacter-biology
#5
REVIEW
Ben D Tall, Jayanthi Gangiredla, Christopher J Grim, Isha R Patel, Scott A Jackson, Mark K Mammel, Mahendra H Kothary, Venugopal Sathyamoorthy, Laurenda Carter, Séamus Fanning, Carol Iversen, Franco Pagotto, Roger Stephan, Angelika Lehner, Jeffery Farber, Qiong Q Yan, Gopal R Gopinath
Cronobacter (previously known as Enterobacter sakazakii) is a genus of Gram-negative, facultatively anaerobic, oxidase-negative, catalase-positive, rod-shaped bacteria of the family Enterobacteriaceae. These organisms cause a variety of illnesses such as meningitis, necrotizing enterocolitis, and septicemia in neonates and infants, and urinary tract, wound, abscesses or surgical site infections, septicemia, and pneumonia in adults. The total gene content of 379 strains of Cronobacter spp. and taxonomically-related isolates was determined using a recently reported DNA microarray...
March 4, 2017: Microarrays
https://www.readbyqxmd.com/read/28271647/mycobacterium-kansasii-pneumonia-with-mediastinal-lymphadenitis-in-a-patient-with-acute-myeloid-leukemia-successful-treatment-to-stem-cell-transplantation
#6
Yeon Geun Choi, Sung Yeon Cho, Dong Gun Lee, Eunjung Yim, Hyonsoo Joo, Seongyul Ryu, Jae Ki Choi, Hee Je Kim
Non-tuberculous mycobacterial (NTM) disease is a relatively rare cause of neutropenic fever in patients with hematologic malignancies. During the neutropenic period, performing invasive procedures for microbiological or pathological confirmation is difficult. In addition, the optimal treatment duration for NTM disease in patients with leukemia, especially prior to stem cell transplantation (SCT), has not been documented. Therefore, we report a case of pneumonia with necrotizing lymphadenitis caused by Mycobacterium kansasii diagnosed during chemotherapy being performed for acute myeloid leukemia...
January 19, 2017: Infection & Chemotherapy
https://www.readbyqxmd.com/read/28257985/microbiological-aspects-of-fournier-s-gangrene
#7
Tuncay Yilmazlar, Baris Gulcu, Ozgen Isik, Ersin Ozturk
BACKGROUND: Fournier's gangrene (FG) is a devastating disease that is characterized by necrotizing fasciitis of the perineal, genital, or perianal region. Broad-spectrum antibiotics are the key component of its treatment. However, there is paucity of data regarding the optimal empirical antibiotherapy for FG. MATERIALS AND METHODS: Data from patients who underwent surgery for FG between January 2007 and December 2012 were retrieved from a prospectively collected departmental FG database...
February 28, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28255545/fatality-in-kikuchi-fujimoto-disease-a-rare-phenomenon
#8
Bianca Barbat, Ruby Jhaj, Daniyeh Khurram
Kikuchi-Fujimoto disease (KFD), also known as histiocytic necrotizing lymphadenitis, is an uncommon condition, typically characterized by lymphadenopathy and fevers. It usually has a benign course; however, it may progress to fatality in extremely rare occasions. The diagnosis is made via lymph node biopsy and histopathology. Our patient was a young female who presented with shortness of breath, fever, and malaise. Physical examination revealed significant cervical and axillary lymphadenopathy. Chest X-ray displayed multilobar pneumonia...
February 16, 2017: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/28246361/new-mouse-model-for-chronic-infections-by-gram-negative-bacteria-enabling-the-study-of-anti-infective-efficacy-and-host-microbe-interactions
#9
Daniel Pletzer, Sarah C Mansour, Kelli Wuerth, Negin Rahanjam, Robert E W Hancock
Only a few, relatively cumbersome animal models enable long-term Gram-negative bacterial infections that mimic human situations, where untreated infections can last for weeks. Here, we describe a simple murine cutaneous abscess model that enables chronic or progressive infections, depending on the subcutaneously injected bacterial strain. In this model, Pseudomonas aeruginosa cystic fibrosis epidemic isolate LESB58 caused localized high-density skin and soft tissue infections and necrotic skin lesions for up to 10 days but did not disseminate in either CD-1 or C57BL/6 mice...
February 28, 2017: MBio
https://www.readbyqxmd.com/read/28196877/using-quantitative-mass-spectrometry-to-better-understand-the-influence-of-genetics-and-nutritional-perturbations-on-the-virulence-potential-of-staphylococcus-aureus
#10
Jessica R Chapman, Divya Balasubramanian, Kayan Tam, Manor Askenazi, Richard Copin, Bo Shopsin, Victor J Torres, Beatrix Ueberheide
Staphylococcus aureus (Sa) is the leading cause of a variety of bacterial infections ranging from superficial skin infections to invasive and life threatening diseases such as septic bacteremia, necrotizing pneumonia, and endocarditis. The success of Sa as a human pathogen is due to its ability to adapt to the environment by changing expression, production, or secretion of virulence factors. Although Sa immune evasion is well-studied, the regulation of virulence factors under different nutrient and growth conditions is still not well understood...
February 14, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28192581/necrotizing-pneumonia
#11
Elitsa V Nicolaou, Allison H Bartlett
Necrotizing pneumonia refers to the development of necrosis, liquefication, and cavitation of the lung parenchyma from an infectious pathogen. Nearly 4% of all community-acquired pneumonias are necrotizing, although studies retrospectively evaluating the incidence have found it to be increasing during the past 20 years. Common presenting symptoms include fever, tachypnea, and cough, and most of those afflicted also develop complications such as parapneumonic effusions, empyemas, or bronchopleural fistulae. When compared to age-matched controls with parapneumonic effusions or severe pneumonias without a necrotizing component, those with necrotizing pneumonia have been shown to have more elevated white blood cell counts and inflammatory markers that take longer to normalize, a longer duration of symptoms despite initiation of therapy, and a longer hospital stay...
February 1, 2017: Pediatric Annals
https://www.readbyqxmd.com/read/28177973/monomicrobial-klebsiella-pneumoniae-necrotizing-fasciitis-with-liver-abscess-a-case-report-and-literature-review
#12
Ching-En Chen, Yu-Chung Shih
BACKGROUND: Necrotizing fasciitis is one of the most life-threatening soft tissue infections and usually follows a major or minor trauma. Published reports regarding single microorganism liver abscess caused by Klebsiella pneumoniae in Taiwan indicate a septic metastasis rate about 12%. Although a hematogenous origin of necrotizing fasciitis from a liver abscess is rare in Taiwan, it remains possible in our clinical practice. CASE PRESENTATION: A 75-year-old man with a history of diabetes and liver abscess had a status of postdrainage 5 years earlier...
March 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28156016/severe-pneumonia-associated-with-ibrutinib-monotherapy-for-cll-and-lymphoma
#13
Natalia Kreiniz, Jacob Bejar, Aaron Polliack, Tamar Tadmor
In recent years, there have been major advances in the treatment of chronic lymphocytic leukemia (CLL) particularly since the development of novel therapeutic agents, mostly "biological drugs." One of the obvious advantages of these agents is the decreased rate of infectious complications occurring during the course of therapy, compared to the use of standard immuno-chemotherapy regimens. Here, we describe 3 patients with CLL and 1 with mantle cell lymphoma who developed severe life-threatening pneumonias, during monotherapy with ibrutinib...
February 3, 2017: Hematological Oncology
https://www.readbyqxmd.com/read/28137816/effects-of-tedizolid-phosphate-on-survival-outcomes-and-suppression-of-production-of-staphylococcal-toxins-in-a-rabbit-model-of-mrsa-necrotizing-pneumonia
#14
Vien T M Le, Hoan N Le, Marcos Gabriel Pinheiro, Kenneth J Hahn, Mary L Dinh, Kajal B Larson, Shawn D Flanagan, Cedric Badiou, Gerard Lina, Christine Tkaczyk, Bret R Sellman, Binh An Diep
The protective efficacy of tedizolid phosphate, a second-generation oxazolidinone that potently inhibits bacterial protein synthesis, was compared to those of linezolid, vancomycin, or saline in a rabbit model of Staphylococcus aureus necrotizing pneumonia. A rabbit dosing regimen of 6 mg/kg tedizolid phosphate IV twice daily, which yielded AUC0-24h values approximating those in humans, was used. Overall survival rate was 83% for rabbits treated with 6 mg/kg tedizolid phosphate twice daily and 83% for those treated with 50 mg/kg linezolid thrice daily (P=0...
January 30, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28115346/targeting-alpha-toxin-to-mitigate-its-lethal-toxicity-in-ferret-and-rabbit-models-of-staphylococcus-aureus-necrotizing-pneumonia
#15
Binh An Diep, Jamese J Hillard, Vien T M Le, Christine Tkaczyk, Hoan N Le, Vuvi G Tran, Renee L Rao, Etyene Castro Dip, Eliane P Pereira-Franchi, Paulyn Cha, Scott Jacobson, Rosemary Broome, Lily I Cheng, William Weiss, Laszlo Prokai, Vien Nguyen, C Ken Stover, Bret R Sellman
The role broad spectrum antibiotics play in the spread of antimicrobial resistance, coupled with their effect on the healthy microbiome have led to advances in pathogen specific approaches for the prevention or treatment of serious bacterial infections. One approach in clinical testing is passive immunization with a monoclonal antibody (mAb) targeting alpha toxin for the prevention or treatment of Staphylococcus aureus pneumonia. Passive immunization with the human anti-alpha toxin mAb, MEDI4893* has been shown to improve disease outcome in murine S...
January 23, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28100903/rhodoccocus-equi-pneumonia-and-paradoxical-immune-reconstitution-inflammatory-syndrome-in-a-patient-with-acquired-immune-deficiency-syndrome-aids
#16
Ritika Zijoo, Ahmed Dirweesh, Nigahus Karabulut
BACKGROUND Pulmonary infections are a major cause of mortality and morbidity in patients infected with human immunodeficiency virus (HIV) and can progress rapidly to respiratory failure and death without appropriate therapy. Herein, we present a rare case of an advanced HIV infection and Rhodoccocus equi (R. equi) pneumonia in a young male who had severe paradoxical immune reconstitution inflammatory syndrome (IRIS). CASE REPORT A 47-year-old nonsmoking Hispanic man with advanced HIV infection presented with severe acute necrotizing pneumonia secondary to R...
January 19, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28054135/-community-acquired-pneumonia
#17
S Poetter-Lang, C J Herold
CLINICAL ISSUE: The diagnosis of community-acquired pneumonia (CAP) is often not possible based only on the clinical symptoms and biochemical parameters. STANDARD RADIOLOGICAL METHODS: For every patient with the suspicion of CAP, a chest radiograph in two planes should be carried out. Additionally, a risk stratification for the decision between outpatient therapy or hospitalization is recommended. METHODICAL INNOVATIONS: Based on the evaluation of the different radiological patterns as well as their extent and distribution, a rough allocation to so-called pathogen groups as well as a differentiation between viral and bacterial infections are possible; however, because different pathogens cause different patterns an accurate correlation is not feasible by relying purely on imaging...
January 2017: Der Radiologe
https://www.readbyqxmd.com/read/27989426/surgical-management-of-complicated-necrotizing-pneumonia-in-children
#18
Jin-Yao Lai, Wendy Yang, Yung-Ching Ming
BACKGROUND: There are no well-established indications for the surgical management of acute necrotizing pneumonitis in children. This study presents our experience regarding this challenging topic. METHODS: Between 2002 and 2009, 56 necrotizing pneumonitis patients with empyema were treated surgically. The outcomes were analyzed retrospectively. Computed tomography findings of massive lung necrosis or large cavities involving more than 50% of the involved lobe were deemed to be complicated necrotizing pneumonitis...
October 28, 2016: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/27926940/inflammasome-independent-nlrp3-restriction-of-a-protective-early-neutrophil-response-to-pulmonary-tularemia
#19
Sivakumar Periasamy, Hongnga T Le, Ellen B Duffy, Heather Chin, Jonathan A Harton
Francisella tularensis (Ft) causes a frequently fatal, acute necrotic pneumonia in humans and animals. Following lethal Ft infection in mice, infiltration of the lungs by predominantly immature myeloid cells and subsequent myeloid cell death drive pathogenesis and host mortality. However, following sub-lethal Ft challenge, more mature myeloid cells are elicited and are protective. In addition, inflammasome-dependent IL-1β and IL-18 are important for protection. As Nlrp3 appears dispensable for resistance to infection with Francisella novicida, we considered its role during infection with the virulent Type A strain SchuS4 and the attenuated Type B live vaccine strain LVS...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27920654/a-rare-cause-of-pulmonary-nodules
#20
Michael Tsuyoshi Chew, Eric Chak, Karen Matsukuma
Crohn's disease is a chronic, idiopathic autoimmune disorder that primarily targets the gastrointestinal (GI) system. It is characterized by transmural inflammation of the GI tract that can occur anywhere from the mouth to the anus. Not infrequently, the disease may also have extraintestinal manifestations (EIMs) that can affect almost any organ system. It is estimated that EIMs affect up to 36% of patients with Crohn's disease, but the incidence and prevalence of pulmonary involvement are variable in the literature and may be as low as 0...
September 2016: Case Reports in Gastroenterology
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