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omaha.va.gov
A rat model of ethanol feeding was used to study the effects of ethanol on antibiotic therapy of pneumococcal pneumonia. Male Sprague-Dawley rats (150 g) received a liquid diet containing 36% of total calories as ethanol. Controls were pair-fed a liquid diet without ethanol or received rat chow. Diets began 7 days pre- and continued postinfection. Rats were infected transtracheally with type 3 Streptococcus pneumoniae and then treated with azithromycin (50 mg/kg), trovafloxacin (50 mg/kg), or ceftriaxone (100 mg/kg) injected subcutaneously twice daily for 5 days. Antibiotic levels in serum, lung cells, and lavage fluid were measured by HPLC. Ethanol- and pair-fed rats had depressed baseline peripheral neutrophil counts but were able to generate adequate numbers of peripheral and pulmonary polymorphonuclear leukocytes early in the course of their infection. Ethanol feeding did not alter the pharmacokinetics of azithromycin, trovafloxacin, or ceftriaxone. All three antibiotics were equally effective in curing experimental pneumococcal pneumonia, and survival rates were similar in treated ethanol-fed and control rats.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10371404&dopt=Abstract
word match zithromax online literature
mahidol.ac.th
A prospective observational study was conducted to determine the prevalence and the clinical impact of intestinal parasitic infections in diarrheal illness among HIV-infected and HIV-uninfected children hospitalized with diarrhea in Bangkok, Thailand. Stool samples were examined for intestinal parasites using a simple smear method, a formalin-ether concentration method, a modified acid-fast stain and a modified trichrome stain. Intestinal parasites (IP) were identified in the stool specimens of 27 of 82 (33%) HIV-infected and 12 of 80 (15%) HIV-uninfected children (p=0.01). Microsporidia and Cryptosporidium were the most common IP found. Eighty-two percent of HIV-infected and 97% of HIV-uninfected groups presented with acute diarrhea and 76% of each group had watery diarrhea. Pneumonia was the most common concurrent illness, found in 22%. Clinical findings were unable to differentiate children infected with IP. Sixty-three percent of HIV-infected and 83% of HIV-uninfected children who had IP made a satisfactory recovery without specific anti-parasitic therapy. However, 9 children (7 HIV-infected and 2 HIV-uninfected) with persistent diarrhea who also had cryptosporidiosis and/or microsporidiosis did not respond to azithromycin and/or albendazole respectively. HIV-infected children with cryptosporidiosis were older and had more advanced HIV infection than those with microsporidiosis. Routine stool examination for IP should be considered due to the absence of clinical markers. The lack of effective therapy for the major IP found underscores the importance of preventive measures.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12041552&dopt=Abstract
word match zithromax online literature
med.uoc.gr
Male Crl:CD1(ICR) BR mice were fed either chow containing Candida albicans or regular chow. The gastrointestinal tract of the C. albicans-fed mice was permanently colonized by the yeast. Groups of C. albicans-colonized mice were subsequently treated either with a macrolide (erythromycin, clarithromycin, roxithromycin or azithromycin) for 10 days or a normal saline solution (controls). Other controls included non-colonized mice receiving the same antibiotics or a saline solution. Our data are as follows: (i) C. albicans-colonized mice treated with each macrolide had highly significant increase in colony counts of C. albicans in their stools compared to C. albicans-colonized mice treated with saline only; (ii) discontinuation of macrolide treatment showed a trend towards lower colony counts, which was not statistically significant (colony counts were sustained even after discontinuation of antibiotic treatment); (iii) dissemination of C. albicans did not occur; (iv) mice fed regular chow treated with the study drugs or saline did not have any yeasts in their stools. In conclusion, oral erythromycin, clarithromycin, roxithromycin and azithromycin cause a modest increase of the C. albicans concentration of the gastrointestinal tract. This increase is not associated with a higher risk of disseminated candidiasis.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12058726&dopt=Abstract
word match zithromax online literature
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