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bacterial peritonitis

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https://www.readbyqxmd.com/read/29152461/use-of-toll-like-receptor-assays-for-the-detection-of-bacterial-contaminations-in-icodextrin-batches-released-for-peritoneal-dialysis
#1
Hêla Hacine-Gherbi, Agnès Denys, Mathieu Carpentier, Arnaud Heysen, Pierrick Duflot, Pierre Lanos, Fabrice Allain
Icodextrin is a starch derivative used for preparing solutions of peritoneal dialysis. Unfortunately, peptidoglycans (PGN) and lipopolysaccharides (LPS) have been reported to contaminate certain icodextrin batches and to contribute to the development of sterile peritonitis. The decision of selecting or rejecting icodextrin batches is however difficult, because of limitations in the detection of these bacterial contaminants. Besides monocyte activation tests of cytokine release, a number of bio-assays using stably TLR-transfected cell lines have been developed...
2017: Toxicology Reports
https://www.readbyqxmd.com/read/29142474/clinical-features-of-alcoholic-hepatitis-in-latinos-and-caucasians-a-single-center-experience
#2
Rogelio Pinon-Gutierrez, Blythe Durbin-Johnson, Charles H Halsted, Valentina Medici
AIM: To study differences of presentation, management, and prognosis of alcoholic hepatitis in Latinos compared to Caucasians. METHODS: We retrospectively screened 876 charts of Caucasian and Latino patients who were evaluated at University of California Davis Medical Center between 1/1/2002-12/31/2014 with the diagnosis of alcoholic liver disease. We identified and collected data on 137 Caucasians and 64 Latinos who met criteria for alcoholic hepatitis, including chronic history of heavy alcohol use, at least one episode of jaundice with bilirubin ≥ 3...
October 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29127663/poly-i-c-priming-exacerbates-cecal-ligation-and-puncture-induced-polymicrobial-sepsis-in-mice
#3
Deepika Sharma, Ankit Malik, Nandakumar Packiriswamy, Michael D Steury, Narayanan Parameswaran
Sepsis continues to be a major healthcare issue with one of the highest mortality rates in intensive care units. Toll-like receptors are pattern recognition receptors that are intricately involved in the pathogenesis of sepsis. TLR3 is a major receptor for double-stranded RNA and is largely associated with immunity to viral infection. In this study, we examined the role of TLR3 priming in the immunopathology of sepsis using cecal-ligation and puncture (CLP) model of sepsis in mice. Mice injected with vehicle or poly(I:C) were subjected to sham or CLP surgery and various parameters of sepsis, including mortality, inflammation, and bacterial clearance were assessed...
November 10, 2017: Inflammation
https://www.readbyqxmd.com/read/29126991/rainbow-trout-oncorhynchus-mykiss-adipose-tissue-undergoes-major-changes-in-immune-gene-expression-following-bacterial-infection-or-stimulation-with-pro-inflammatory-molecules
#4
Kimberly A Veenstra, Eakapol Wangkahart, Tiehui Wang, Lincoln Tubbs, Juliette Ben Arous, Christopher J Secombes
In mammals, visceral adipose is increasingly seen as playing an important role in immune function with numerous pro-inflammatory, anti-inflammatory and immune-modulating proteins and peptides being identified in adipocytes. Adipose is also now known as a tissue that has an important role in the regulation of peritoneal immune responses. Despite this, only lately has consideration been given to visceral adipose as an important immune tissue in fish, especially in the context of intraperitoneal vaccination. The present study demonstrates that fish visceral adipose is capable of expressing a large range of immune molecules in response to stimulation with a live bacterium (A...
November 7, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29125911/5-lipoxygenase-knockout-aggravated-apical-periodontitis-in-a-murine-model
#5
Y Wu, H Sun, B Yang, X Liu, J Wang
5-Lipoxygenase (5-LO) plays a vital role in the host innate immune response, including bacteria-induced inflammation. Apical periodontitis (AP) is due to immune disorders caused by imbalances between bacterial invasion and subsequent host defense response. In this work, we investigated the role of 5-lipoxygenase in AP by using 5- lo knockout mice (5- lo-/- mice). Results showed that 5- lo-/- mice had greater periapical bone loss and more osteoclasts positive for tartrate-resistant acid phosphatase staining than did wild-type mice, as determined by micro-computed tomography and histologic staining...
November 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/29115466/recombinant-tsp53-modulates-intestinal-epithelial-barrier-integrity-via-upregulation-of-zo%C3%A2-1-in-lps%C3%A2-induced-septic-mice
#6
Jia Xu, Zhihao Liu, Wei Zhan, Ren Jiang, Chunhua Yang, Hong Zhan, Yan Xiong
Tight junctions (TJs) are a critical component in maintaining the intestinal mucosal barrier function and gastrointestinal health of animals. Gut barrier dysfunction contributes to the initiation and development of sepsis which induces an uncontrollable systemic inflammatory response and gives rise to life‑threatening clinical conditions. Excretory‑secretary antigens from Trichimella spiralis (T. spiralis) have been reported to protect from sepsis in a mouse model, however the mechanism remains to be elucidated...
November 3, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29109849/current-concepts-and-future-strategies-in-the-antimicrobial-therapy-of-emerging-gram-positive-spontaneous-bacterial-peritonitis
#7
REVIEW
Marco Fiore, Alberto Enrico Maraolo, Ivan Gentile, Guglielmo Borgia, Sebastiano Leone, Pasquale Sansone, Maria Beatrice Passavanti, Caterina Aurilio, Maria Caterina Pace
Spontaneous bacterial peritonitis (SBP) is the most common infection in end-stage liver disease patients. SBP is defined as an ascitic fluid infection with a polymorphonuclear leucocyte count ≥ 250/mm(3) without an evident intra-abdominal surgically treatable source. Several mechanisms contribute to SBP occurrence, including translocation of gut bacteria and their products, reduced intestinal motility provoking bacterial overgrowth, alteration of the gut's barrier function and local immune responses. Historically, Gram-negative enteric bacteria have been the main causative agents of SBP, thereby guiding the empirical therapeutic choice...
October 28, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/29108754/extracellular-adenosine-produced-by-ecto-5-nucleotidase-cd73-regulates-macrophage-pro-inflammatory-responses-nitric-oxide-production-and-favors-salmonella-persistence
#8
Matthew G Costales, Mohammad Samiul Alam, Christopher Cavanaugh, Kristina M Williams
Surface enzymes CD39 (nucleoside triphosphate dephosphorylase) and CD73 (ecto-5'-nucleotidase) mediate the synthesis of extracellular adenosine that can regulate immune responses. Adenosine produced by CD39/CD73 acts via adenosine receptors (ARs). CD73 is expressed by a variety of cell types and mediates anti-inflammatory responses. Because efficient innate immune responses are required for clearance of Salmonella infection, we investigated the role of CD73 in macrophage function, including phagocytosis, intracellular killing of Salmonella, and anti-bacterial pro-inflammatory responses to Salmonella-whole cell lysate (ST-WCL) or Salmonella infection...
November 11, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/29099971/involvement-of-zizimin2-3-in-the-age-related-defect-of-peritoneal-b-1a-cells-as-a-source-of-anti-bacterial-igm
#9
Akihiko Sakamoto, Takenori Matsuda, Koichiro Kawaguchi, Akinori Takaoka, Mitsuo Maruyama
Zizimin2 (Ziz2), also known as dedicator of cytokinesis 11 (DOCK11), is a guanine nucleotide exchange factor that is predominantly expressed in lymphoid tissues. Recent findings demonstrated that Ziz2 is involved in the development of B cells, including germinal centre B cells and marginal zone B cells. However, limited information is currently available on the roles of Ziz2 in B-1 cells, a B-cell subset that resides in body cavities and contributes to protection against foreign pathogens in a T-cell-independent manner...
November 1, 2017: International Immunology
https://www.readbyqxmd.com/read/29099421/effects-of-atorvastatin-on-portal-hemodynamics-and-clinical-outcomes-in-patients-with-cirrhosis-with-portal-hypertension-a-proof-of-concept-study
#10
Saptarshi Bishnu, Sk M Ahammed, Avik Sarkar, Jabaranjan Hembram, Saswata Chatterjee, Kshaunish Das, Gopal K Dhali, Abhijit Chowdhury, Kausik Das
BACKGROUND AND AIM: Statins can modulate portal microvascular dynamics in patients with cirrhosis. We present data from a proof-of-concept study aimed at comparing combination of propranolol and atorvastatin versus propranolol alone in reducing portal pressure in patients with cirrhosis. PATIENTS AND METHODS: In this open-label proof-of-concept study, 23 consecutive patients with cirrhosis were randomized into group A (incremental dose propranolol, n=12) or group B (atorvastatin 20 mg daily with propranolol in incremental dose, n=11)...
November 2, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29099329/the-influence-of-carbon-dioxide-pneumoperitoneum-on-systemic-inflammatory-response-syndrome-and-bacterial-translocation-in-patients-with-bacterial-peritonitis-caused-by-acute-appendicitis
#11
Huaidu Peng, Junshuo Zhang, Chudong Cai, Xi Fang, Junwei Wu
OBJECTIVE: To explore the influence of carbon dioxide pneumoperitoneum (CDP) on system inflammatory response syndrome (SIRS) and bacterial translocation (BT) in patients with bacterial peritonitis (BP) caused by acute appendicitis (AA). METHODS: Eighty-six consecutive subjects were randomly divided into the laparoscopy and laparotomy groups (n = 44 and n = 42, respectively). The levels of white blood cells (WBC), C-reactive protein (CRP), tumor necrosis factor α (TNF-α), and interleukin 6 (IL-6) of the 2 groups were tested preoperatively and at days 1, 2, and 4 after surgery...
November 1, 2017: Surgical Innovation
https://www.readbyqxmd.com/read/29098551/ascites-neutrophil-gelatinase-associated-lipocalin-identifies-spontaneous-bacterial-peritonitis-and-predicts-mortality-in-hospitalized-patients-with-cirrhosis
#12
Giuseppe Cullaro, Grace Kim, Marcus R Pereira, Robert S Brown, Elizabeth C Verna
BACKGROUND: Neutrophil gelatinase-associated lipocalin (NGAL) is a marker of both tissue injury and infection. Urine NGAL levels strongly predict acute kidney injury and mortality in patients with cirrhosis, but ascites NGAL is not well characterized. We hypothesized that ascites NGAL level is a marker of spontaneous bacterial peritonitis (SBP) and mortality risk in patients with cirrhosis. METHODS: Hospitalized patients with cirrhosis and ascites undergoing diagnostic paracentesis were prospectively enrolled and followed until death or discharge...
December 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29089624/combating-virulence-of-gram-negative-bacilli-by-ompa-inhibition
#13
Xavier Vila-Farrés, Raquel Parra-Millán, Viviana Sánchez-Encinales, Monica Varese, Rafael Ayerbe-Algaba, Nuria Bayó, Salvador Guardiola, María Eugenia Pachón-Ibáñez, Martin Kotev, Jesús García, Meritxell Teixidó, Jordi Vila, Jerónimo Pachón, Ernest Giralt, Younes Smani
Preventing the adhesion of pathogens to host cells provides an innovative approach to tackling multidrug-resistant bacteria. In this regard, the identification of outer membrane protein A (OmpA) as a key bacterial virulence factor has been a major breakthrough. The use of virtual screening helped us to identify a cyclic hexapeptide AOA-2 that inhibits the adhesion of Acinetobacter baumannii, Pseudomonas aeruginosa and Escherichia coli to host cells and the formation of biofilm, thereby preventing the development of infection in vitro and in a murine sepsis peritoneal model...
October 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29081656/spontaneous-peritonitis-in-critically-ill-cirrhotic-patients-a-diagnostic-algorithm-for-clinicians-and-future-perspectives
#14
Marco Fiore, Alberto Enrico Maraolo, Sebastiano Leone, Ivan Gentile, Arturo Cuomo, Vincenzo Schiavone, Sabrina Bimonte, Maria Caterina Pace, Marco Cascella
Spontaneous peritonitis (SP) is the most common infection among decompensated end-stage liver disease patients. SP is the infection of ascitic fluid (neutrophil ascitic count ≥250/mL) without an alternative focus of abdominal infection. According to the causative agent, clinicians can make the diagnosis of spontaneous bacterial peritonitis or spontaneous fungal peritonitis. The mortality rate is very high, ranging from one-fifth of the patients with spontaneous bacterial peritonitis to four-fifths of the patients with spontaneous fungal peritonitis...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/29066080/piper-nigrum-extract-ameliorated-allergic-inflammation-through-inhibiting-th2-th17-responses-and-mast-cells-activation
#15
Thi Tho Bui, Chun Hua Piao, Chang Ho Song, Hee Soon Shin, Dong-Hwa Shon, Ok Hee Chai
Piper nigrum (Piperaceae) is commonly used as a spice and traditional medicine in many countries. P. nigrum has been reported to have anti-oxidant, anti-bacterial, anti-tumor, anti-mutagenic, anti-diabetic, and anti-inflammatory properties. However, the effect of P. nigrum on allergic asthma has not been known. This study investigated the effect of P. nigrum ethanol extracts (PNE) on airway inflammation in asthmatic mice model. In the ovalbumin (OVA)-induced allergic asthma model, we analysed the number of inflammatory cells and cytokines production in bronchoalveolar lavage fluid (BALF) and lung tissue; histological structure; as well as the total immunoglobulin (Ig)E, anti-OVA IgE, anti-OVA IgG1 and histamine levels in serum...
October 16, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/29063496/kocuria-massiliensis-sp-nov-a-new-bacterial-species-isolated-from-a-patient-with-foot-osteomyelitis
#16
Sophie Edouard, Pierre-Edouard Fournier, Mamadou Beye, Frédérique Gouriet, Gregory Dubourg, Jeremy Delerce, Laure Swiader, Didier Raoult
Most of the species from the genus Kocuria are environmental or commensals of mammalian skin and oral bacteria, and had rarely been associated with human infection. However, recent reports showed an increase of the clinical role of these bacteria in human infectious diseases. Most of the cases occurred in hospitals and were device related. They included bacteremia, peritonitis, abscess, endocarditis and ocular infection. We here describe the main characteristics and the draft genome of Kocuria massiliensis sp...
October 23, 2017: Infection
https://www.readbyqxmd.com/read/29055386/peritoneal-dialysis-the-unique-features-by-compartmental-delivery-of-renal-replacement-therapy
#17
Tibor Fülöp, Lajos Zsom, Mihály B Tapolyai, Miklos Z Molnar, Sohail Abdul Salim, István Arany, Mehrdad Hamrahian, László Rosivall
Despite decades of research, the clinical efficacy of peritoneal dialysis (PD) remains enigmatic. We may wonder why the modality fail in some patients but perhaps the more proper question would be, why it works in so many? We know that the contribution of residual renal function (RRF), more so than in hemodialysis, is critically important to the well-being of many of the patients. Unique features of the modality include the relatively low volume of dialysate fluid needed to provide effective uremic control and the disproportionate tendency for both hypokalemia and hypoalbuminemia, when compared to hemodialysis...
October 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/29052227/adjuvant-pretreatment-with-alum-protects-neonatal-mice-in-sepsis-through-myeloid-cell-activation
#18
Jaimar C Rincon, Angela L Cuenca, Steven L Raymond, Brittany Mathias, Dina C Nacionales, Ricardo Ungaro, Philip A Efron, James L Wynn, Lyle L Moldawer, Shawn D Larson
The high mortality in neonatal sepsis has been related to both quantitative and qualitative differences in host protective immunity. Especially in the premature neonate where outcomes from sepsis are so dismal, pretreatment strategies to prevent sepsis have received inadequate consideration. Aluminum-based adjuvants (alum) are currently used in many pediatric vaccines, but their use as an innate immune stimulant alone has not been well studied. We asked whether pre-treatment with alum adjuvant alone could improve outcome and host innate immunity in neonatal mice given polymicrobial sepsis...
October 20, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29041907/detection-of-bacterial-dna-by-in-situ-hybridization-in-patients-with-decompensated-liver-cirrhosis
#19
Shingo Usui, Hirotoshi Ebinuma, Po-Sung Chu, Nobuhiro Nakamoto, Yoshiyuki Yamagishi, Hidetsugu Saito, Takanori Kanai
BACKGROUND: Spontaneous bacterial peritonitis (SBP) is often difficult to diagnose because bacteria in ascites cannot be detected accurately by conventional culture. In situ hybridization (ISH) was previously developed for rapid detection of genes from bacteria phagocytized by neutrophils. SBP may develop after bacteria enter into the systemic circulation following bacterial translocation. Therefore, we performed ISH to identify bacteria in blood samples collected from patients with decompensated liver cirrhosis (LC)...
October 17, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/29037504/an-investigation-of-virulence-factors-of-legionella-pneumophila-environmental-isolates
#20
Elif Özlem Arslan-Aydoğdu, Ayten Kimiran
Nine Legionella pneumophila strains isolated from cooling towers and a standard strain (L. pneumophila serogroup 1, ATCC 33152, Philadelphia 1) were analyzed and compared in terms of motility, flagella structure, ability to form biofilms, enzymatic activities (hemolysin, nucleases, protease, phospholipase A, phospholipase C, acid phosphatase, alkaline phosphatase and lipase), hemagglutination capabilities, and pathogenicity in various host cells (Acanthamoeba castellanii ATCC 30234, mouse peritoneal macrophages and human peripheral monocytes)...
July 22, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
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