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PubMed2005

Thrombopoietin in the cerebrospinal fluid of patients with aseptic and bacterial meningitis.

Despite the recent evidence of the localization of thrombopoietin (TPO) and its receptor in the central nervous system (CNS), TPO protein concentrations in the cerebrospinal fluid (CSF) remained to be clarified. We previously reported that serum TPO is increased in children with meningitis. To determine changes in TPO concentrations in the CSF by meningitis and to explore the relationship between serum and CSF TPO concentrations, we measured TPO concentrations in 110 CSF samples and 33 serum/CSF pairs from 11 bacterial meningitis, 49 aseptic meningitis, and 50 nonmeningitis children. In only 12% (13 of 110) of CSF samples (0 bacterial meningitis, 8 aseptic meningitis, and 5 controls), TPO concentrations could be determined (24.1 +/- 29.0 pg/ml). CSF TPO concentrations did not significantly differ among the three groups and did not correlate with age. TPO concentrations in all serum samples were detectable, and mean concentrations in bacterial meningitis (510.6 +/- 237.0 pg/ml) were significantly higher than those in aseptic meningitis (136.6 +/- 71.6, p < 0.01) and controls (181.3 +/- 88.3, p < 0.01). These findings suggest that TPO is not produced in the CNS of patients with meningitis and that TPO did not cross the blood-brain barrier even during meningeal infection.

Adolescent↗
PubMed1978

The efficacy of polio vaccination in Finland.

The inactivated polio vaccine has eliminated not only the disease but also polioviruses from Finland. The last endemic cases of poliomyelitis were seen in 1961, and two were imported in 1964. To check whether polioviruses were still circulating in Finland, an intensified search for polioviruses was carried out in 1972-1974 in sewage, among patients with polio-like diseases and among healthy preschool children. Viruses, mostly Coxsackie B viruses, were isolated from sewage in 67% of the samples, but no polioviruses. The etiology of aseptic meningitis and other polio-like diseases was explained in 52% of the cases, but without isolation of any polioviruses. Faeces samples from 4878 different preschool children were examined: 15.7% of them excreted viruses, but not polioviruses.

Child, Preschool↗
PubMed1998

Evaluation of two new integrated adapters for blood drawing in closed blood bag systems: influence on different molecular coagulation markers.

We compared a conventional blood donation bag system (A) with two newly developed ones (B, C) with integrated Y-shaped adapters. The new systems facilitate the withdrawal of blood samples in a closed system under aseptic conditions. The purpose of the study was to determine whether disturbances during blood donation in the different tubings influence the quality of the donated plasma due to activation processes of the coagulation system. In all bag samples from 34 probands for each system, we found higher levels of the global tests (aPTT, TT) compared to intraindividual controls. This was due to a greater amount of anticoagulant in the bag samples. An increase of procoagulant activity was demonstrated for bags A and C. Concerning the fibrinolytic system, values were reduced in all three systems compared to controls. In summary, the quality of the plasma in the three different bag devices was comparable to controls concerning factor activities measured as global tests. The activation of the coagulation system was only slightly higher in the new system B and C than in the conventional one (A). Therefore, the new closed systems are suitable for blood donation and reveal a high coagulation quality of the plasma.

Adolescent↗
PubMed1985

Use of glutaraldehyde for disinfection in dialysis.

We compared Cidex HD Disinfecting Solution (CHD), a brand of glutaraldehyde disinfectant, alone and with bleach (B) to formaldehyde (F) with bleach for disinfection and cleaning of hemodialysis equipment. Two Drake-Willock central delivery systems (CDS) with 15 accompanying bedside stations and one Drake-Willock 4216 single patient delivery system (SPS) were used. The CDS designated #1, delivered dialysate to bedside stations 1 through 9, while CDS#2 supplied bedside stations 10 through 16. The study was conducted in three stages. Stage I used F six nights per week and B cleaning Wednesday (CDS#1/SPS) versus F Monday, Wednesday, and Friday with B on Wednesday (CDS#2) for four weeks. Stage II compared CHD six nights/week versus CHD Monday, Wednesday, and Friday for eight weeks. Stage III compared CDH six nights/week with B cleaning on Wednesday versus CHD on Monday, Wednesday, and Friday with B cleaning on Wednesday for four weeks. Samples of pretreated water were collected aseptically on Mondays, Wednesdays, and Fridays each week from the following sites: pre/CDS, inflow Hansen-bedside stations #5, #13, and SPS and pre-blood detector on BS #5, #13, and the SPS. During the study, 763 samples were cultured. Microbiological test results were reported as colony forming units per ml (CFU/ml). The CFU/ml were obtained by filtrating a 10 ml aliquot through a 0.45 mu filter, the filter transferred to a petri dish containing standard plate count agar and counted.(ABSTRACT TRUNCATED AT 250 WORDS)

Aldehydes↗
PubMed1991

Antibodies to myelin-associated glycoprotein are found in cerebrospinal fluid in polyneuropathy associated with monoclonal serum IgM.

Antibodies to myelin-associated glycoprotein (MAG) have been demonstrated in the serum samples from about half the patients with polyneuropathy associated with serum IgM monoclonal component. We examined cerebrospinal fluid (CSF) and serum samples from 13 patients with this disease by enzyme-linked immunosorbent assay for anti-MAG IgM antibodies. We detected these antibodies in both CSF and serum samples in 10 of the patients; in three of them the antibodies were at higher levels in the CSF. The remaining three patients had anti-MAG IgM antibodies in the CSF only. Intrathecal production of anti-MAG IgM antibodies is thus common in polyneuropathy associated with IgM monoclonal component. In three patients, examined on two occasions from 1 to 7 years, high anti-MAG IgM antibody levels persisted in CSF and serum samples. Among 165 patients with other neurologic diseases, including 60 with multiple sclerosis and 60 control subjects with tension headache, anti-MAG IgM antibodies were detected in the CSF from three patients (two with multiple sclerosis, one with aseptic meningitis), and in the serum sample of one patient with multiple sclerosis. Whether the frequent occurrence of anti-MAG IgM antibodies in CSF and their intrathecal synthesis has pathogenetic relevance for the development of polyneuropathy associated with IgM monoclonal component is unsure.

Aged↗
PubMedDate not supplied

Cultivatable bacteria in dentine after caries excavation using rose-bur or carisolv.

To measure the amount of viable bacteria after excavation using conventional rose-bur or the chemo-mechanical Carisolv method, a total of 22 lesions were analyzed (one vital tooth per patient) in this open, controlled and randomized study. Two samples per lesion were taken under aseptic conditions using a rose-bur, one superficially in the caries lesion and one after completed excavation. In in vitro tests more material was collected from the hard caries free dentine as compared to the carious dentine. The samples were incubated on blood agar (aerobically and anaerobically), Rogosa (SL) agar and mitis salivarius (MS) agar. For blood agar (aerobic) both methods resulted in a significant decrease in CFU, for blood agar (anaerobic) and MS agar only the Carisolv method resulted in a significant decrease in CFU and for SL agar neither method resulted in a significant decrease in CFU. Comparing CFU before and after excavation, a considerable reduction of CFU was seen ranging from 10(1) to 10(4). Comparing the excavation methods, there were no significant differences, except in the case of blood agar (aerobic), which showed that Carisolv excavation was more effective in reducing CFU. This study indicated that bacterial sampling collected more material from hard dentine as compared from soft. Remaining bacteria after excavation were low in both groups. The Carisolv method seemed to remove bacteria at least up to and possibly beyond the extent of conventional drilling.

Adult↗
PubMed1996

[Study on drawing aseptic gas in diluting drugs].

In this study, the gas was drawn from sealed aseptic bottles, the blue flame of an alcohol lamp, and the air of the same treatment room. And the gas was put into aseptic solutions of 10% glucose separately and dripped. Then the samples were taken for bacteriaculture at appointed time-points. Meanwhile, the gases were drawn and put into aseptic solutions of 10% glucose separately. Then deactived penicillines were diluted with the solutions separately. Finally, the penicillines were mixed with 10% glucose and dripped. The samples were taken for bacteria-culture in the same way. The results showed that there was no colony existed in the gas from the sealed aseptic bottles and the flame of the alcohol lamp. However, colonies existed in the samples from the air of the treatment room. It is suggested that sealed aseptic gas should be drawn and kept for use in diluting drugs.

Asepsis↗
PubMed1993

Risk of aseptic meningitis after measles, mumps, and rubella vaccine in UK children.

Cases of aseptic meningitis associated with measles/mumps/rubella vaccine were sought in thirteen UK health districts following a reported cluster in Nottingham which suggested a risk of 1 in 4000 doses, substantially higher than previous estimates based on cases reported by paediatricians (4 per million). Cases were ascertained by obtaining vaccination records of children with aseptic meningitis diagnosed from cerebrospinal fluid samples submitted to Public Health Laboratories or discharged from hospital with a diagnosis of viral meningitis. Both methods identified vaccination 15-35 days before onset as a significant risk factor and therefore indicative of a causal association. With both, half the aseptic meningitis cases identified in children aged 12-24 months were vaccine-associated with onset 15-35 days after vaccine. The study confirmed that the true risk was substantially higher than suggested by case reports from paediatricians, probably about 1 in 11,000 doses. However, the possibility that the aseptic meningitis induced by vaccination was largely asymptomatic and a chance laboratory finding in children investigated for other clinical conditions, particularly febrile convulsions, could not be excluded. Comparison of national reports of virus-positive mumps meningitis cases before and after the introduction of this vaccine indicated that the risk from wild mumps was about 4-fold higher than from vaccine. Altogether, 28 vaccine-associated cases were identified, all in recipients of vaccines containing the Urabe mumps strain. The absence of cases in recipients of vaccine containing the Jeryl Lynn strain, despite its 14% market share, suggested a higher risk from Urabe vaccine. A prospective adverse event surveillance system using the study methods is currently being established to assess the risk, if any, from the Jeryl Lynn strain which is now the only mumps vaccine used in the UK.

Child, Preschool↗
PubMed2003

[Analysis of 187 children with enteroviral central nervous system infection in Shandong area].

OBJECTIVE: To evaluate the diagnostic potential of previously published enterovirus (EV) reverse transcription polymerase chain reaction (RT-PCR) assay in detection of EV in CSF samples from children with a diagnosis of aseptic meningitis and to investigate the clinical characteristics of the patients seen in Shandong. METHODS: EV RNA was detected in 187 CSF samples and serum and/or urine samples of a part of patients by RT-PCR and viral culture technique. RESULTS: RT-PCR was positive in all 62 CSF specimens which were positive by cell culture (100%). In addition, 93 of 125 (74.4%) CSF samples negative by cell culture were RT-PCR positive. In 4 of these 93 (4.3%) patients, viral culture of specimens from other sites (serum or urine) was also positive. The sensitivity of CSF RT-PCR based on clinical diagnosis in patients with meningitis of negative bacterial culture results was 82.9% (155/187), which was considerably higher than the sensitivity of CSF virus culture 33.2% (62/187). The results of RT-PCR can be reported within 4 hours, whereas the viral culture of CSF requires 4.6 days for a cytopathic effect to develop. EV meningitis occurred in a sporadic form and in some areas there were outbreaks. The clinical characteristics of 155 patients with EV meningitis were different in different age groups. CONCLUSION: EV was one of the most common causes of aseptic meningitis in Shandong area. The RT-PCR assay was rapid, sensitive and specific for the diagnosis of EV meningitis and may be a potential tests to shorten hospital stay and reduce the use of antibiotics.

Central Nervous System Infections↗
PubMed2004

Incidence of catheter-associated urinary tract infection among dogs in a small animal intensive care unit.

OBJECTIVE: To determine incidence of and possible risk factors for catheter-associated urinary tract infection (UTI) among dogs hospitalized in an intensive care unit and compare results of bacterial culture of urine samples with results of bacterial culture of catheter tips. DESIGN: Prospective study. ANIMALS: 39 dogs. PROCEDURE: A standard protocol for aseptic catheter placement and maintenance was used. Urine samples were obtained daily and submitted for bacterial culture. When possible, the urinary catheter tip was collected aseptically at the time of catheter removal and submitted for bacterial culture. Bacteria that were obtained were identified and tested for antimicrobial susceptibility. RESULTS: 4 of the 39 (10.3%) dogs developed a UTI. The probability of remaining free from UTI after 1 day in the intensive care unit was 94.9%, and the probability of remaining free from UTI after 4 days was 63.3%. Bacteria isolates were generally common urinary tract pathogens and were susceptible to most antimicrobials. Specific risk factors for catheter-associated UTI, beyond a lack of antimicrobial administration, were not identified. Positive predictive value of bacterial culture of urinary catheter tips was only 25%. CONCLUSIONS AND CLINICAL RELEVANCE: Results suggest that placement of an indwelling urinary catheter in dogs is associated with a low risk of catheter-associated UTI during the first 3 days after catheter placement, provided that adequate precautions are taken for aseptic catheter placement and maintenance. Results of bacterial culture of urinary catheter tips should not be used to predict whether dogs developed catheter-associated UTI.

Animals↗
PubMed2002

[Plasma endotoxin assay by supersensitive reagent for the diagnosis of gram-negative bacteremia].

With a novel supersensitive reagent, we evaluated the utility of measuring plasma endotoxin level for the rapid and sensitive diagnosis of gram-negative bacteremia. Subjects were 112 febrile(more than 38 degrees C) patients suspected of having bacterial infection and 170 samples were collected. Venous blood was obtained aseptically before administering antibiotics. Blood culture and endotoxin assays were performed simultaneously with these materials. Plasma endotoxin levels were positive in 64 samples when the cut off index was postulated at 0.35 pg/ml, while only 5 samples when the cut off index was postulated at 5 pg/ml. When the cut off index was at 0.35 pg/ml, sensitivity was 86%, while it was 14% when the cut off index was 5 pg/ml. Gram-negative rods(GNR) were detected by blood culture in 14 cases and the average period to detect GNR was 14.8 hours. The presence of circulating viable bacteria is diagnosed by blood culture, but because of the serious consequence of bacterial sepsis, treatment is initiated even in the absence of an identifiable organism. Since plasma endotoxin level can be assayed in about 2 hours, it will be more practical if we adjust the cut off index according to the clinical situation.

Adolescent↗
PubMed1985

Inoculant Production with Diluted Liquid Cultures of Rhizobium spp. and Autoclaved Peat: Evaluation of Diluents, Rhizobium spp., Peats, Sterility Requirements, Storage, and Plant Effectiveness.

Fully grown broth cultures of various fast- and slow-growing rhizobia were deliberately diluted with various diluents before their aseptic incorporation into autoclaved peat in polypropylene bags (aseptic method) or mixed with the peat autoclaved in trays (tray method). In a factorial experiment with the aseptic method, autoclaved and irradiated peat samples from five countries were used to prepare inoculants with water-diluted cultures of three Rhizobium spp. When distilled water was used as the diluent, the multiplication and survival of rhizobia in the peat was similar to that with diluents having a high nutrient status when the aseptic method was used. In the factorial experiment, the mean viable counts per gram of inoculant were log 9.23 (strain TAL 102) > log 8.92 (strain TAL 82) > log 7.89 (strain TAL 182) after 24 weeks of storage at 28 degrees C. The peat from Argentina was the most superior for the three Rhizobium spp., with a mean viable count of log 9.0 per g at the end of the storage period. The quality of inoculants produced with diluted cultures was significantly (P = 0.05) better with irradiated than with autoclaved peat, as shown from the factorial experiment. With the tray method, rhizobia in cultures diluted 1,000-fold or less multiplied and stored satisfactorily in the presence of postinoculation contaminants, as determined by plate counts, membrane filter immunofluorescence, and plant infection procedures. All strains of rhizobia used in both the methods showed various degrees of population decline in the inoculants when stored at 28 degrees C. Fast- and slow-growing rhizobia in matured inoculants produced by the two methods showed significant (P < 0.01) decline in viability when stored at 4 degrees C, whereas the viability of some strains increased significantly (P < 0.01) at the same temperature. The plant effectiveness of inoculants produced with diluted cultures and autoclaved peat did not differ significantly from that of inoculants produced with undiluted cultures and gamma-irradiated peat.

Journal Article↗
PubMed1998

Nitric oxide in septic and aseptic meningitis in children.

To investigate the involvement of nitric oxide (NO) in childhood meningitis, we measured the concentrations of NO2- (a stable metabolite of NO) in serial samples of cerebrospinal fluid (CSF) from 11 children with septic and 7 with aseptic meningitis and 26 control patients without meningitis. The mean concentration of NO2- in samples obtained during the early stages of septic meningitis, but not aseptic meningitis, was significantly higher than in control samples. Clinical and laboratory improvement following administration of antibiotics and dexamethasone was associated with a fall in CSF [NO2-] to normal levels in these patients. CSF [NO2-] remained almost consistently within the normal range in patients with aseptic meningitis. Our findings indicate that NO production is enhanced in the CSF compartment of children with septic meningitis and support the hypothesis that NO is involved in the pathophysiology of septic meningitis.

Alanine↗
PubMedDate not supplied

Tenascin-C levels in pseudosynovial fluid of loose hip prostheses.

OBJECTIVE: Aseptic loosening is one of the most important problems that can occur after total hip arthroplasty (THA). In this study, we analysed levels of large tenascin-C (TN-C) variants and compared them in pseudosynovial fluid from patients with aseptic loosening after THA with those in synovial fluid from patients undergoing primary THA (control). METHODS: Pseudosynovial fluid samples (n = 24) were obtained by aspiration at the time of revision THA performed due to aseptic loosening. Synovial fluid samples (n = 12) were obtained by aspiration at the time of primary THA. Expression of TN-C splice variants was examined using immunoblotting. TN-C levels were measured using an enzyme-linked immunosorbent assay (ELISA) system that we developed previously. RESULTS: Western blotting showed the presence of large TN-C variants in pseudosynovial fluid of artificial joints with loosening. TN-C levels were approximately three times higher in pseudosynovial fluid of loose artificial joints (median 151.9 ng/mL) than in synovial fluid controls (median 50.1 ng/mL) (p = 0.035). CONCLUSION: Levels of TN-C including large variant subunits are elevated in pseudosynovial fluid of loose artificial joints, indicating that TN-C is a useful novel biochemical marker of loose hip prostheses.

Aged↗
PubMed2004

Assessment of bacterial contamination of drinking water provided to mice.

The objective of this study was to evaluate whether an 240-ml water bottle provided to individually housed mice would remain potable for a 2-week interval (based on absence of coliforms). The study used inbred C57BL/6 mice and CB6F1 x C3D2F1 hybrid mice. Test groups were assigned to minimize the variables of strain, caging type (non-ventilated static versus ventilated) and building location. A 3-cc sample of drinking water was removed aseptically from the bottles and vacuum-filtered using a 250-ml filter funnel with a 0.45-mum pore size. The membrane filter was removed using sterile forceps and placed on a blood agar plate for 10 min. The plate was streaked and incubated at 37 degrees C for 5 days. The plates were observed daily, and if growth had occurred, further testing was done to determine specific organisms. Of the 148 samples only 23 had any bacterial growth. Typical bacteria were unspeciated gram-positive bacilli and Staphylococcus, Micrococcus, Streptococcus, and Pantoea species. The absence of coliforms and low percentage of bacterial contamination suggest that drinking water will remain potable for 2 weeks when supplied to an individual mouse.

Animal Husbandry↗
PubMed1999

Cheesecake: a potential vehicle for salmonellosis?

This study was conducted to investigate the potential hazard of Salmonella Enteritidis surviving during the preparation and baking of cheesecake. Batters prepared with standard- and reduced-fat ingredients were inoculated with a 5-strain cocktail of S. Enteritidis (10 and 10(6) CFU/g) and were then baked according to a typical cheesecake recipe. After baking, the cheesecakes were refrigerated overnight before the survival of S. Enteritidis was determined either by direct plating or after enrichment. Samples (approximately 25 g each) were aseptically cut from the center, mid (6.35 cm from edge), and side (2.54 cm from edge) area of each cake for microbiological analysis. Proximate compositions (fat, moisture, protein, ash, pH, and water activity) of both raw batter and final baked cheesecakes were also determined. S. Enteritidis was able to survive baking of cheesecake when batter was inoculated with a high population (10(6) CFU/g) of S. Enteritidis regardless of whether standard-or reduced-fat ingredients were used. Three of nine standard- and four of nine reduced-fat cheesecake samples contained viable S. Enteritidis. In addition, one sample contained viable S. Enteritidis population detectable by direct plating (approximately 10 CFU per g of cake). This sample was taken from the center of a standard-fat cheesecake that was inoculated with a high population (10(6) CFU/g) of S. Enteritidis. Results of this study suggest that cheesecake prepared with eggs of low microbiological quality or cheesecake improperly handled or stored could serve as a vehicle for salmonellosis.

Carbohydrates↗
PubMed2006

Urine cartilage oligomeric matrix protein (COMP) measurement is useful in discriminating the osteoarthritic Thoroughbreds.

OBJECTIVE: To quantify the urinary concentration of cartilage oligomeric matrix protein (COMP), and to evaluate the relationship between urinary COMP concentration and the catabolic activity of synovial fluid (SF) in diseased horses. METHODS: COMP in horse urine was detected by immunoblotting with a monoclonal antibody (mAb; 14G4) raised against equine COMP from articular cartilage. Urine and serum samples were obtained from 83 Thoroughbred horses with aseptic joint diseases (AJD, 79 horses) or septic joint diseases (SJD, four horses) at the time of anesthesia induction, and samples of SF were obtained during surgery. Control samples of urine (n=111) were collected from normal horses free of any orthopedic diseases after they had been racing. COMP concentration was determined in all samples using inhibition enzyme-linked immunosorbent assay (ELISA) with mAb 14G4. SF samples were also used for the quantification of gelatinase activity. RESULTS: Positive bands of COMP fragments were determined on the immunoblots with mAb 14G4. The urinary COMP concentrations in AJD and SJD horses (1.02+/-0.75 and 1.55+/-1.17 microg/100mg creatinine, respectively) were significantly higher than normal (0.57+/-0.29 microg/100mg creatinine). In 55 horses with fractures in the AJD group there was a logarithmic relationship (r=-0.45, P<0.001) between the urinary and SF COMP measurements, while the urinary COMP level was positively correlated with matrix metalloproteinase (MMP)-2 and -9 activities (r=0.30, P<0.05 and r=0.51, P<0.001, respectively) in SF. CONCLUSIONS: The urinary COMP assay with mAb 14G4 is useful for discriminating horses with osteoarthritis. The higher COMP levels in urine from such horses would be indicative of enhanced proteolytic activity, in addition to the increased COMP levels in the diseased joints.

Animals↗
PubMed2001

An outbreak of echovirus 11 in a children's home.

An outbreak of echovirus 11 infection was observed in a children's home that housed 16 children. Nine children younger than 1 year shared a large room on the first floor, which contained a large basin. Three of them presented with aseptic meningitis with CSF and stool samples positive for echovirus 11. The other six infants who shared the room were asymptomatic but their stools were positive for echovirus 11. Seven infants aged 1-2 years stayed on the second floor and were asymptomatic. One of them had positive stool culture for echovirus 11. No virus was isolated from stool samples taken from the 26 staff members. However, serology was suggestive for recent echovirus 11 infection in seven asymptomatic staff members. All seven worked either exclusively on the first floor or alternately on both floors. Our survey demonstrated that echovirus 11 may spread very efficiently in children's homes. The rate of meningitis in the infected infants was 30% while all the recently infected adults were asymptomatic.

Adult↗