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Biomedical subjects

N Gürler

Publications and source records attributed to N Gürler.

7 recordsLinked to original sources
PubMed2001

Randomized comparison of cefepime versus ceftazidime monotherapy for fever and neutropenia in children with solid tumors.

BACKGROUND: With the availability of new broad-spectrum antibiotics, initial therapy with a single agent has become an alternative to classic combinations, especially beta-lactam antibiotics plus aminoglycosides, in the management of febrile neutropenic cancer patients. PROCEDURE: Since January 1994, monotherapy has been used for empiric initial treatment at our center. The aim of this prospective randomized study is to compare the efficacy of cefepime (CFP), a new fourth-generation cephalosporin, and ceftazidime (CFZ) as empirical monotherapy of febrile neutropenic patients with solid tumors. From January 1998 to November 1998, 63 episodes of fever and neutropenia occurring in 33 children with solid tumors including lymphomas, were randomized to receive treatment with either CFP or CFZ. The patients were analyzed for leukocyte count and absolute neutrophil count (ANC) at entry, days in fever, neutropenia and hospitalization, and side effects of drugs. Success with or without modifications of the initial antibiotic was defined as survival through neutropenia; failure was death due to infection. RESULTS: In our study group, with a median age of 7 [(1/12)-14] years, CFP was administered in 32, and CFZ in 31 episodes. An infection was documented microbiologically in eight episodes (25%) in the CFP arm and in nine episodes (29%) in the CFZ arm. The success rate with initial empiric monotherapy was 62.5% in the CFP arm and 61.3% in the CFZ arm respectively (P > 0.05). The total success rate (success with or without modification) was 100% in both arms. No major adverse effects were observed in either groups. CONCLUSION: CFP is as effective and safe as CFZ for the empirical treatment of febrile episodes in neutropenic patients with solid tumors.

Adolescent↗
PubMed1998

Scrofuloderma.

Explore the source record for details and available documents.

Biopsy↗
PubMed1996

Effect of resuscitation on bacterial translocation in haemorrhagic shocked rats.

The aim of this study was to investigate the resuscitative effects of various intravenous solutions on intestinal mucosal damage and bacterial translocation due to haemorrhagic shock. Seventy Sprague-Dawley rats were anaesthetised and subjected to thirty minutes of haemorrhagic shock (systolic blood pressure 40 mmHg). Resuscitation was established with either autologous-blood, three per cent hypertonic saline (HS), 7.5% HS, 0.9% NaCl and Ringer's lactate and Dextran 70 solution. Animals in sham shock group were only cannulated and not resuscitated. Bacterial translocation was evaluated by culture of mesenteric lymph nodes taken 24 hours after resuscitation. The rates of bacterial translocation observed were 50% in autologous blood group, 60% in Dextran 70 group, 40% in Ringer's lactate group, 10% each in 3% HS and 7.5% HS group and 20% in 0.9% NaCl group. A statistically significant difference was observed between the groups resuscitated with HS solution and the other solutions. No meaningful difference was noted between the various concentrations of hypertonic saline solution. The reduction in the rate bacterial translocation with hypertonic solution is assumed to be due to preservation of intestinal microcirculation and thus prevention of intestinal ischaemia.

Animals↗
PubMed1992

The effect of surgical trauma on the bacterial translocation from the gut.

Bacterial translocation is the passage of viable bacteria from the lumen of the gastrointestinal tract through the intestinal mucosa to other sites. It is believed that bacterial translocation may lead to infection and septicemia. The purpose of this study was to determine what factors in experimental surgical trauma lead to bacterial translocation. Two-month-old Wistar albino rats were divided into five groups: (A) control; (B) anesthesia (ether inhalation); (C) anesthesia and surgery (median laparotomy and transient compression of the intestines); (D) fasting only; and (E) anesthesia, surgery, and fasting. After 48 hours, ileum, mesenteric lymph nodes, and blood were cultured for aerobic and anaerobic organisms. In each group the number of animals with bacteria overgrowth was calculated. The incidence of bacterial translocation to mesenteric lymph nodes and blood in groups B and D were similar to the controls (P greater than .01). There was a significant increase in the number of animals with bacterial translocation in groups C and E (P less than .001). The majority of translocating bacteria were E coli.

Animals↗
PubMedDate not supplied

The effects of sodium deoxycholate, lactulose and glutamine on bacterial translocation in common bile duct ligated rats.

BACKGROUND/AIMS: Sepsis is a major cause of post-operative morbidity and mortality in obstructive jaundice as a result of bacterial translocation from the gut. This study was conducted to investigate the effects of glutamine, lactulose, and the bile salt Na deoxycholate in preventing bacterial translocation in an animal model where obstructive jaundice was developed by common bile duct ligation. METHODOLOGY: Fifty Wistar albino rats were divided into 5 groups of 10 animals each. The animals in groups I-IV underwent common bile duct ligation and received, respectively, either saline, Na deoxycholate, lactulose or glutamine, orally. Group V had sham ligation and received saline orally. The animals were sacrificed at the end of the 7th day, and serum concentrations of bilirubin, aspartate aminotransferase (ALT), alanine aminotransferase (ALT), and alkaline phosphatase (AP) were measured. In addition, mesenteric lymph nodes were removed and cultured together with cecal content. Histopathologic examination of terminal ileum specimens was made. RESULTS: Na deoxycholate, lactulose and glutamine all reduced bacterial translocation rates to mesenteric lymph nodes (p<0.05), with glutamine causing the greatest effect. Na deoxycholate and lactulose prevented bacterial translocation by causing a decrease in cecal intraluminal bacterial content (p<0.001), while glutamine exerted its effect by preserving intestinal mucosal integrity. CONCLUSIONS: The integrity of the intestinal mucosal barrier is of paramount importance in preventing bacterial translocation, and the measures taken to protect mucosal integrity reduce bacterial translocation to a greater extent than those taken to decrease the number of bacteria in the gut.

Animals↗