Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0243026 (sepsis)
 52,417 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Neisseria meningitidis, the cause of epidemic meningitis and acute lethal sepsis, synthesizes surplus lipopolysaccharides (LPSs) during growth, which are released as outer membrane vesicles (OMV) or "blebs". Meningococcal disease severity is related to plasma LPS levels. We have compared the biological activities of native outer membrane vesicles (nOMV) to those of purified Nm-LPS (Nm-LPS) and LPS-depleted OMV (dOMV) prepared from N. meningitidis. The LPS content of nOMV was determined spectrophotometrically by quantifying KDO and by silver-stained SDS-PAGE gels. The morphology of the preparations was studied by transmission electron microscopy. The Limulus amoebocyte lysate (LAL) assay was used to quantify LPS in the plasma solutions. The preparations were diluted in endotoxin-free heparin plasma to equal amounts of LPS (w/w) in the range 50-5000 pg/ml. The biological reactivity was tested by: (i) a monocyte target-assay (monocyte purity > or =96%); and (ii) a whole blood model, measuring the secretion of TNF-alpha and IL-6 induction of procoagulant activity in monocytes (PCA). In both models, nOMV induced dose-dependent cell responses (TNF-alpha, IL-6, PCA) similar to purified Nm-LPS, whereas dOMV induced minimal responses. However, LAL activity was significantly higher for nOMV than for purified Nm-LPS and dOMV. The cellular responses of purified Nm-LPS and nOMV were reduced (>95%) by a specific anti-CD14-antibody.
 ...
PMID:Cellular activating properties and morphology of membrane-bound and purified meningococcal lipopolysaccharide. 1152 Oct 68

In this study we evaluate the effect of eight cord-care regimens on cord separation time and other secondary outcomes: omphalitis, sepsis, death, cord bleeding, compliance, satisfaction or dissatisfaction with regard to the type of treatment, umbilical cord colonization--in 1,535 healthy term infants. The eight cord-care regimens studied were: 70% alcohol, natural drying, salicylic sugar powder, triple dye, micronized green clay powder, colloid silver-benzyl-peroxide powder, neomycin-bacitracin powder, 1% basic fuchsine. None of the newborns developed sepsis or died and we found only sporadic cases of omphalitis. With regard to cord separation time the best results were obtained with salicylic sugar powder (5.6 +/- 2.3 days) and green clay powder (6.7 +/- 2.2 days). Both forms of treatment proved to be more effective (p < 0.05) than all the others. We found that salicylic sugar powder allows for early cord detachment resulting in excellent parent treatment compliance and reduction of their concern, notwithstanding higher percentages of cord bleeding. The rate of positive umbilical swabs was low and was significantly higher only than the results obtained with neomycin-bacitracin powder treatment. This study demonstrates that, in hospital nurseries of developed countries, salicylic sugar powder can be effectively and safely used for umbilical cord care of healthy term infants.
 ...
PMID:Umbilical cord care: the effect of eight different cord-care regimens on cord separation time and other outcomes. 1180 75

Wound infection is a significant problem for the complicated, critically ill patient. A critical care patient's plan of care can be challenging enough without complicating it with the additional comorbidity of a wound infection. Wound infection delays wound closure, disrupts wound tensile strength; increases hospital length of stay and costs; and escalates the patient's risk of bacteremia, sepsis, multisystem organ failure, and death. The goal is to reduce and eliminate the wound infection before it leads to such drastic consequences, especially in the age of antibiotic-resistant organisms. It is paramount to identify classic and not-so-obvious signs and symptoms of wound infections, correctly collect a wound specimen, and assist in appropriate systemic and topical wound management. Techniques to prevent wound infection and reduce bioburden include nontoxic wound cleansing, debridement of necrotic tissue, proper antibiotic management, and appropriate use of moisture-retentive dressings. Advanced technologies in moisture-retentive dressings include sustained-release silver and cadexomer iodine antimicrobial dressings and negative-pressure wound therapy. Accurate wound assessment, knowledge of new technologies, and applying current wound care standards to clinical practice will assist the critical care nurse in treating and preventing wound infections.
 ...
PMID:Infected wound management: advanced technologies, moisture-retentive dressings, and die-hard methods. 1185 24

The emergence of multidrug-resistant microbes has serious implications for managing infection and sepsis and has stimulated efforts to develop alternative treatments, such as antimicrobial peptides. The objective of this study was to test a designer peptide, novispirin G10, against multidrug-resistant microorganisms. By two-stage radial diffusion assays, its activity against such organisms compared favorably with that of standard antibiotics and other antimicrobial peptides. It killed bacteria very rapidly, was nonhemolytic, and was relatively noncytotoxic. The peptide induced an immediate, massive efflux of potassium from Pseudomonas aeruginosa, suggesting that it altered the permeability of its inner membrane. The presence of human serum reduced but did not eliminate its activity. We tested the in vivo activity of novispirin G10 in rats with an infected, partial-thickness burn that covered 20% of their total body surface area. The burned area was seeded with 10(6) CFU of a Silvadene-resistant P. aeruginosa strain, and 24 h later a single treatment with 0, 1, 3, or 6 mg of synthetic novispirin G10 (n = 16 at each concentration) per kg was given intradermally. Significant bacterial killing (P < 0.0001) was evident within 4 h in each peptide group compared to controls receiving vehicle. Antimicrobial peptides such as novispirin G10 may provide a useful alternative or adjunct to standard antibiotic agents in treating burns or other wound infections.
 ...
PMID:Activity of novispirin G10 against Pseudomonas aeruginosa in vitro and in infected burns. 1201 98

This study was carried out on forty cases, classified into 3 groups; group I: 10 healthy controls subjects, group II: 20 patients with hepatosplenic schistosomiasis and group III: 10 bilharzial patients who underwent total splenectomy. All cases were subjected to clinical examination, abdominal ultrasonography, rectal snips and laboratory investigations which included: stool and urine analysis, complete blood picture, IHAT for bilharziasis, liver function tests, viral markers, estimaton of T-lymphocyte subpopulations (CD(+)3, CD(+)4, & CD(+)8) by flow Cytometry, silver stained blood films to detect argyrophilic inclusions and 99mTc sulphur colloid splenic scan which was applied to group II only. The present results revealed varying degrees of hypersplenism (anaemia, leukopenia & thrombocytopenia) in GII. Seventy percent of this group was positive for HbsAg, HCV or both in association with schistosomiasis. Abnormal red blood cells (acanthocytes, target cells, pitted cells & normoblasts) and inclusion bodies (Howell Jolly bodies, argyrophilic inclusions & pappenhiemer bodies) were detected with different values in GIII. CD(+)4 cells were moderately reduced in GII while they were markedly decreased in GIII. CD(+)8 cells were elevated in GII and returned nearly to the normal values in GIII with decrease in number of total T-lymphocytes. Most patients of GII showed marked squestration of 99mTc labelled R.B.Cs. in the spleen with reversed hepatic/splenic ratio (normally hepatic/splenic ratio is over two). IHAT showed positivity in 90% of patients in GII while it was 50% in GIII. Although total splenectomy improved the haematological pattern and the cytopenias, which are prominent features in hepatosplenic schistosomiasis, yet the immunological profile was still altered. So, it is recommended to perform segmental splenectomy with retention of a normal mass of functioning residual spleen to preserve more immunological function and to protect against life-threatening occurrence of post-splenectomy sepsis.
 ...
PMID:Assessment of splenic functions in patients with hepato-splenic schistosomiasis using non-invasive techniques. 1256

Extraintestinal Escherichia coli strains cause meningitis, sepsis, urinary tract infection, and other infections outside the bowel. We examined here extraintestinal E. coli strain CFT073 by differential fluorescence induction. Pools of CFT073 clones carrying a CFT073 genomic fragment library in a promoterless gfp vector were inoculated intraperitoneally into mice; bacteria were recovered by lavage 6 h later and then subjected to fluorescence-activated cell sorting. Eleven promoters were found to be active in the mouse but not in Luria-Bertani (LB) broth culture. Three are linked to genes for enterobactin, aerobactin, and yersiniabactin. Three others are linked to the metabolic genes metA, gltB, and sucA, and another was linked to iha, a possible adhesin. Three lie before open reading frames of unknown function. One promoter is associated with degS, an inner membrane protease. Mutants of the in vivo-induced loci were tested in competition with the wild type in mouse peritonitis. Of the mutants tested, only CFT073 degS was found to be attenuated in peritoneal and in urinary tract infection, with virulence restored by complementation. CFT073 degS shows growth similar to that of the wild type at 37 degrees C but is impaired at 43 degrees C or in 3% ethanol LB broth at 37 degrees C. Compared to the wild type, the mutant shows similar serum survival, motility, hemolysis, erythrocyte agglutination, and tolerance to oxidative stress. It also has the same lipopolysaccharide appearance on a silver-stained gel. The basis for the virulence attenuation is unclear, but because DegS is needed for sigma(E) activity, our findings implicate sigma(E) and its regulon in E. coli extraintestinal pathogenesis.
 ...
PMID:DegS is necessary for virulence and is among extraintestinal Escherichia coli genes induced in murine peritonitis. 1276 Oct 86

Complications resulting from infection remain a major problem for hemodialysis catheters, with significant numbers of catheters being removed due to catheter-related sepsis. Numerous strategies have been employed to reduce the occurrence of infection and improve long-term outcomes, with varying degrees of success. One promising approach is coating the external surface of catheters with silver using physical vapor deposition processes. This article reviews results of animal and clinical experiments conducted to assess efficacy and biocompatibility of silver-coated dialysis catheters. It is concluded that silver coatings can reduce bacterial colonization and occurrence of infection associated with these devices.
 ...
PMID:Silver coating of dialysis catheters to reduce bacterial colonization and infection. 1501 35

Contaminated or infected catheters are a major source of nosocomial infections responsible for >40% of all episodes of nosocomial sepsis in acute-care hospitals. Antibiotics as well as surface modifications with, for example, hydrogels proved to be of little value in preventing the contamination of indwelling catheters. The even distribution of 10(12-13) activated silver nanoparticles per gram in various polymers, e.g. polyurethane and silicone, results in an excellent antimicrobial activity against a broad spectrum of organisms in vitro. Substantial reduction of incrustation of these catheters was also observed. These preliminary experimental data warrant clinical studies.
 ...
PMID:Prevention of catheter-related infections: the potential of a new nano-silver impregnated catheter. 1503 31

Infection, thrombosis, and stenosis are among the most frequent complications associated with blood-contacting catheters. Complications resulting from infection remain a major problem for hemodialysis catheters, with significant numbers of catheters being removed due to catheter-related sepsis. Numerous strategies have been employed to reduce the occurrence of infection and im-prove long-term outcomes, with varying degrees of success. The most important is the careful and sterile handling by the attending staff of the catheters during hemodialysis treatments to minimize or stop a microbial colonization of the skin and the catheter. Another approach is coating the external surface of the catheters with substances which are antibacterial like silver and/or substances with low thrombogenicity like silicone. This investigation reviews results of animal and clinical experiments conducted to assess the efficacy and biocompatibility of silver and silicone coated dialysis catheters. It is concluded that silver coatings can reduce bacterial colonization and occurrence of infection associated with these devices. The catheters employing ion implantation of silicone rubber showed low thrombogenicity. Results of the studies indicate that ion beam based processes can be used to improve thrombus and infection resistance of blood contacting catheters. A new development is the microdomain structured surface (PUR-SMA coated catheters). Preliminary results with these catheters are very encouraging.
 ...
PMID:Large bore catheters with surface treatments versus untreated catheters for vascular access in hemodialysis. 1520 51

The traditional approach for the treatment of partial-thickness burns has been the application of topical antimicrobial therapy to control bacterial colonization, avoid progression to invasive infection, and allow healing of the underlying burn wound. Infection is associated with apparent conversion of a second-degree burn to full-thickness injury that requires autografting, to say nothing of a source of sepsis, which has been associated with multiorgan failure and death. We postulated that early debridement and coverage of large partial-thickness burns (>40% total body surface area) with homograft would preserve underlying tissue, improves healing, and decreases morbidity. We present data obtained in 16 patients treated with the application of homograft compared to 13 patients treated with the traditional approach consisting of twice daily applications of silver sulfadiazine. The treatment of massive second-degree burns with homograft reduced hospital length of stay (P < 0.01). We thus conclude that in patients with >40% total body surface area burns, early debridement and wound coverage with homograft is an alternative method to the conservative non-operative approach with topical antimicrobial therapy.
 ...
PMID:The use of homograft compared to topical antimicrobial therapy in the treatment of second-degree burns of more than 40% total body surface area. 1530 19


<< Previous 1 2 3 4 5 6 7 8 9 10 Next >>