Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0036690 (sepsis)
 59,461 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Ketamine was reported to decrease cytokine production and improve survival after Escherichia coli-induced sepsis. We examined whether ketamine decreased interleukin (IL)-6 production and improved survival after 1) burn injury or 2) burn injury combined with sepsis (E. coli) at 24 h. Ketamine (10 mg/kg) or saline was given at 1 h after burn injury (G 1, 2, 5, 6), 24 h after burn injury (G 3, 4), or at E. coli inoculation (G 7, 8). Mortality was recorded for 7 days and IL-6 was measured in serum at 6 h after burn (G 1-2), 30 h after burn (G 3-4), or 6 h after sepsis (30 h after burn) (G 5-8). Burn injury only: Ketamine given immediately (1 h) after burn injury but not 24 h after, decreased the burn-induced increase of IL-6 but did not improve survival. Burn injury + sepsis: Ketamine given immediately after burn injury did not significantly decrease the sepsis-induced increase of IL-6 or improve survival. In contrast, ketamine given immediately after sepsis significantly improved survival (46.1% versus 13.3%, P = 0.008) and decreased IL-6 production (72,640 +/- 40,990 vs 332,300 +/- 32,300 pg/mL, P = 0.008). We conclude that ketamine therapy improves survival in burn injury followed by sepsis. This beneficial effect is probably achieved through interference with the inflammatory cascade, as evidenced by attenuation of the proinflammatory marker IL-6.
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PMID:Ketamine improves survival in burn injury followed by sepsis in rats. 1686 23

Acute suppurative thyroiditis is a very uncommon disorder, most often arising in children with congenital conditions connecting the thyroid directly to the oropharynx, such as a piriform fistula or thyroglossal duct. Accordingly, the most common causative agents are those which can colonize the oral mucosa and spread to the thyroid contiguously, such as Streptococcus species, Staphylococcus species and anerobes. In adults, a hematogenous spread to a pre-existing altered thyroid gland is often the postulated pathogenetic mechanism, and it is exceedingly rare in the United States. We report the case of an 81-yr-old woman with acute suppurative thyroiditis secondary to Escherichia coli (E. coli) infection. The patient presented with fevers, chills, dysuria and recent painful neck swelling. Thyroid ultrasound and neck computed tomography revealed a multinodular goiter and an intra-thyroid abscess. An otolaryngology evaluation and barium swallow failed to show a piriform fistula. Thyroid hormone levels were consistent with hyperthyroidism. Urine cultures were positive for E. coli. The patient subsequently developed a clinical picture consistent with severe thyrotoxicosis, which rapidly resolved after medical treatment, appropriate antibiotics and surgical drainage of the thyroid. Abscess material also grew E. coli. Thus, acute suppurative thyroiditis secondary to sepsis can complicate an otherwise asymptomatic multinodular goiter and should be promptly treated with broad-spectrum antibiotics and/or surgical drainage to avoid serious consequences, including severe thyrotoxicosis.
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PMID:A case of acute suppurative thyroiditis complicated by thyrotoxicosis. 1725 97

Sepsis, being characterized by massive translocation of bacteria into tissues, induces the suppression of the function of both leukocytes and macrophages. The aim of the study was to count activated macrophages (AMs) and apoptotic (Ao) cells in the rat spleen during the period of experimental sepsis and to clarify the associations of these parameters with each other and with leukocyte migration and bacterial translocation into different organs. The Wistar rats were intraperitoneally inoculated with Escherichia coli (E. coli) and were sacrificed after 2, 6, 24, 48, and 120 h. Bacteria and leukocytes in tissues were specifically stained. AMs were identified by immunohistological staining and Ao cells by the TUNEL assay. The high counts of E. coli at 6 h were strongly associated with a low level of the total counts of leukocytes, accompanied by the high translocation of microbes into tissues. In the spleen, lymphocytes, macrophages, and neutrophils with pyknotic nuclei were identified. The count of AMs was highest at 24 h after the inoculation with E. coli; at the same time the Ao cell count began to rise and achieved the highest level 24 h later. Our investigation indicates that the molecular peculiarities of macrophages and their responses to the inflammation process are tissue-specific. In the spleen the activation process involving hematopoietic cells and macrophages was remarkable at the late stage of sepsis, characterized by a high count of Ao cells.
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PMID:Experimental sepsis: characteristics of activated macrophages and apoptotic cells in the rat spleen. 1738 69

Intracorporeal lithotripsy is used to treat a high percentage of urinary calculi. Urinary calculi may contain bacteria, which might cause septicemia after lithotripsy; however, little is known about the effects of lithotripters on the viability of microorganisms inside renal calculi. The objectives of this study were to evaluate the bactericidal effect, and the potential effect on intra-bacterial protein release of four different intracorporeal lithotripters on Escherichia coli (E. coli) inoculated inside artificial kidney stones. An electrohydraulic, a pneumatic, an ultrasonic, and a holmium-laser lithotripter were used to pulverize a set of infected kidney stones inside a test tube containing a saline solution. Two different energy levels were tested per lithotripter. The stones were manufactured by mixing gypsum cement and Vel-mix-stone with a suspension containing E. coli. Results were analyzed by analysis of variance. The release of intracellular protein was measured with a spectrophotometer. Bacteria inactivation was observed with all lithotripters. The highest percentage of inactivated bacteria was obtained with the electrohydraulic lithotripter. The smallest effect was observed using the holmium-laser lithotripter. A relatively high amount of intracellular protein was released into the saline solution after stone pulverization. Intracorporeal lithotripters inactivate a high percentage of bacteria during stone comminution; however, intracellular protein is released, increasing the probability of septicemia.
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PMID:Inactivation of bacteria inoculated inside urinary stone-phantoms using intracorporeal lithotripters. 1818 30

We present a case of emphysematous pyelonephritis (EPN) with sepsis and disseminated intravascular coagulation (DIC). An 87-year-old man with a history of uncontrolled diabetes mellitus (DM) for more than 25 years was admitted to our hospital for altered mental status and high fever. The initial diagnosis was acute pyelonephritis based on the findings of pyuria and right costovertebral angle knock pain. DIC developed rapidly even though empirical antimicrobial therapy had been started immediately. The abdominal CT revealed the presence of gas in the right renal parenchyma; the definitive diagnosis was EPN. Escherichia coli (E. coli) was identified from both blood and urine cultures. We selected medical conservative therapy with antibiotics because of his advanced age and a history of myocardial infarction three months previously. With only noninvasive therapy and no surgical therapy, his condition improved and he was discharged four months after admission. EPN is a rare, severe gas-forming, necrotizing infection of the renal parenchyma and surrounding areas. Over 90% of the cases occur in DM patients and the most common causative organism is E. coli (60%). The mortality rate with only medical conservative therapy is approximately 20% and transurethral and/or percutaneous drainage or nephrectomy are generally reported to be necessary. To our knowledge, no case with EPN over the age of 84 years has been reported. Although his condition was very severe on admission and long-term antimicrobial therapy was necessary, he was ambulatory at the time of discharge. Herein, we report the pertinent EPN literature and discuss the management of EPN.
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PMID:[Case of emphysematous pyelonephritis with sepsis and disseminated intravascular coagulation]. 1842 71

Fluoroquinolones are the most commonly used prophylactic antimicrobials for ultrasound-guided transrectal prostate biopsy due to their broad pathogen spectrum, pharmacokinetics, bioavailability and ease of oral administration. However, although Escherichia. coli (E. coli) is the most common pathogen associated with infections after transrectal prostate biopsy, the prevalence of fluoroquinolone resistant strains of E. coli is increasing. Levofloxacin resistant E. coli sepsis occurred in four (0.6%) of 665 patients who received oral levofloxacin prophylaxis and underwent transrectal prostate biopsy from July 2002 to December 2006 in this institute. All patients had obstructions of the lower urinary tract and three of the four had a history of previous use of quinolones. Although two of the four patients developed septic shock, all of the patients were treated with carbapenems immediately and made a complete recovery. Since a case of multiresistant E. coli sepsis and fatal anaerobic sepsis after transrectal prostate biopsy had been reported, intravenous carbapenem is recommended as antimicrobial therapy for sepsis after transrectal prostate biopsy.
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PMID:Levofloxacin resistant Escherichia coli sepsis following an ultrasound-guided transrectal prostate biopsy: report of four cases and review of the literature. 1845 66

Toll-like receptors are essential pattern-recognition receptors of the innate immune system. They recognize a range of conserved molecules of invading microorganisms. The innate immune system is developed to protect the host, but can be deleterious if activated uncontrolled or inappropriate, such as in sepsis with Gram-negative bacteria. New approaches for treatment, like inhibition of innate immune responses, may be beneficial for the outcome of such conditions. Toll-like receptor 4 associated with CD14 and MD-2, is the lipopolysaccharide (LPS)-receptor and one of the candidates for such intervention. We investigated the newly described cyanobacterial LPS analogue CyP as a potential inhibitor of Escherichia coli (E. coli) LPS-induced inflammatory response in porcine whole blood. Pro-inflammatory cytokines and soluble terminal complement complex, sC5b-9, were used as read-outs. CyP, in contrast to E. coli LPS, did not induce cytokine production using doses up to 1mug/mL whole blood, indicating a lack of agonistic effect of CyP. In contrast, CyP was an efficient LPS antagonist, dose-dependently and completely inhibiting E. coli LPS-induced TNF-alpha, IL-1beta and IL-8 production. CyP was a modest activator of porcine complement compared to LPS from other Gram-negative bacteria. When CyP was pre-incubated in porcine whole blood before adding whole E. coli bacteria, a modest, variable and non-significant inhibition of cytokines were seen, reaching an average inhibition of 44% for IL-1beta. We have demonstrated for the first time that the cyanobacterial LPS analogue, CyP, is an efficient inhibitor of E. coli LPS-induced cytokines in whole blood and may be a candidate for therapeutic LPS-inhibition.
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PMID:Cyanobacterial LPS antagonist (CyP)-a novel and efficient inhibitor of Escherichia coli LPS-induced cytokine response in the pig. 1857 Dec 39

Inhibition of the inappropriate and excessive inflammatory response has been a main issue in sepsis-related research. Historically, TNF-alpha and IL-1 beta have been postulated as key mediators in sepsis, but selective inhibition of these cytokines has failed in clinical trials. Recently it was found that inhibition of upstream recognition by complement and CD14 could efficiently reduce Escherichia coli (E. coli)-induced inflammation. An ex vivo model with lepirudin-anticoagulated human whole blood was used to explore the significance of selective inhibition of TNF-alpha and IL-1 beta in E. coli-induced inflammation. The effect of TNF-alpha, IL-1 beta, complement and CD14 on the inflammatory response was assessed by adding highly specific neutralizing agents to these mediators. Proinflammatory cytokines, expression of CD11b and oxidative burst were measured. The controls included relevant isotype-matched immunoglobulins and peptides. Selective inhibition of TNF-alpha or IL-1 beta had no impact on E. coli-induced release of proinflammatory cytokines, CD11b-upregulation or oxidative burst. In contrast, the combined inhibition of complement and CD14 virtually abolished these responses. These data suggest that both TNF-alpha and IL-1 beta are downstream mediators and as single mediators play a limited role within the complex inflammatory reactions induced by E. coli.
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PMID:Selective inhibition of TNF-alpha or IL-1 beta does not affect E. coli-induced inflammation in human whole blood. 2033 22

Escherichia coli (E. coli) are the most common aerobic gram-negative bacilli in a normal intestinal tract. They cause most of the intra-abdominal infections, wound infections associated with abdominal surgery, and septicemia. Most of these infections are of endogenous intestinal origin. Lactoferrin (LF) is an iron-binding glycoprotein found in milk and various external secretions. This protein has been found to have a number of biological functions, including antimicrobial, anti-cancer, antioxidant, and immunomodulatory effects. Partial degradation of LF by pepsin can give rise to peptides termed lactoferricin (LFcin) with more potent antimicrobial activity. LF and LFcin have been shown to inhibit the growth of a number of pathogenic bacteria (including E. coli and antibiotic-resistant strains), fungi, and even viruses in both in vitro and in vivo studies. We previously demonstrated that both recombinant porcine LF (pLF) produced from yeast and a synthetic 20-residue porcine LFcin peptide exhibit antimicrobial activity in vitro. In one of our recent studies, we performed pathogen challenges, including pathogenic E. coli, Staphylococcus aureus and Candida albicans, of the digestive tract of a transgenic milk-fed animal model. The results showed that LF has broad spectrum antimicrobial activity in the digestive tract and protects the mucosa of the small intestine from injury. Our following study also revealed that pLF as a feedstuff additive enhances avian immunity, including antibody formation and cell-mediated immunity. All of these results suggest that LF could be a novel natural protein in the treatment and prevention of infections with E. coli or antibiotic-resistant bacteria strains.
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PMID:Lactoferrin: an iron-binding antimicrobial protein against Escherichia coli infection. 2132 78

The present study reports on layer chickens with colibacillosis in 2 commercial egg-producing farms (referred to as farm A and farm B, which were managed by the same owner and were about 1 km apart) in the middle region of the Korean peninsula. The 2 flocks were infected at the initiation of egg laying. They were characterized by no previous clinical signs but sudden mortality (2.7-4.0%), with severe lesions of septicemia and fibrinous polyserositis. Escherichia coli was isolated from the lesions of the infected birds. Serotyping tests identified isolates that belonged to somatic groups O1 (12/17), O46 (2/17), O78 (1/17), and O84 (1/17) or that were unidentified (1/17). Thirteen of 17 E. coli isolates (76.4%) obtained from 11 birds in the 2 flocks showed similar pulsed-field gel electrophoresis patterns that were arbitrarily designated as pattern A. The isolates had high frequencies of putative virulence genes including 100% [fimC (type 1 fimbriae), iucD (aerobactin synthesis), and iss (increased serum survival)], 94.1% [cva/cvi (structural genes of colicin V operon) and vat (vacuolating autotransporter toxin)], 88.2% [irp2, iron-repressible protein (yersinia bactin) synthesis, and fyuA, ferric yersinia uptake], and 82.3% [tsh (temperature-sensitive hemagglutinin)]; astA (encoding a heat-stable cytotoxin associated with enteroaggregative E. coli) was not associated with the enteric disorder. These data suggest that all chickens with colibacillosis on farms A and B were likely infected by E. coli strains that are highly pathogenic in avian species.
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PMID:Characterization of Escherichia coli isolates from laying hens with colibacillosis on 2 commercial egg-producing farms in Korea. 2184 59


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